eckel power tong dies factory

A two-speed Hydra-Shift® motor coupled with a two-speed gear train provides (4) torque levels and (4) RPM speeds. Easily shift the hydraulic motor in low speed to high speed without stopping the tong or tublar rotation, saving rig time.

Used on corrosion resistant alloys (CRA) and fiberglass tubulars where reduced markings on the tubular is desired. Eckel"s Coated True Grit® Dies utilize Tungsten Carbide grit which provides many more points of contact on the surface of the tubular than our Pyramid Fine Tooth dies.

A patented door locking system (US Patent 6,279,426) for Eckel tongs that allows for latchless locking of the tong door. The tong door swings easily open and closed and locks when torque

is applied to the tong. When safety is important this locking mechanism combined with our safety door interlock provides unparalleled safety while speeding up the turn around time between connections. The Radial Door Lock is patented protected in the following countries: Canada, Germany, Norway, United Kingdom, and the United States.

The WD Tri-Grip® Backup is a high performance no compromise backup that is suitable for make-up and break-out of the most demanding connections. The WD Tri-Grip®Backup features a three head design that encompasses the tubular that applies an evenly distributed gripping force. The WD Tri-Grip®is a high performance backup with no compromises that is available for specific applications that provdies exceptional gripping capabilities with either Eckel True Grit® dies or Pyramid Fine Tooth dies.

The field proven Tri-Grip® Backup features a three head design that encompasses the tubular that applies an evenly distributed gripping force. The Tri-Grip®Backup provides exceptional gripping capabilities with either Eckel True Grit® dies or Pyramid Fine Tooth dies. The hydraulic backup is suspended at an adjustable level below the power tong by means of three hanger legs and allowing the backup to remain stationary while the power tong moves vertically to compensate for thread travel of the connection.

Eckel offers several models of torque control systems that are used to monitor the torque turn values when making up tubular connections (Tubing, Casing, & Drill Pipe). Any flaws in the make-up process will be readily shown in a graph.

We offer a full range of high quality casing and tubing, drill pipe tongs for use in all types of oil and gas drilling, well completion and well servicing activities. Our tongs have been engineered for the high operational torques today"s that premium connections require. Eckel tongs continue to advance the technology of tool service and setting industry standards.

Sliding heads with wrap-around dies are considered the best choice for thinner wall tubulars where point loading is a concern. The wrap-around dies are symmetrically spaced at all times insuring an equally distributed load on the tubular. A larger gripping surface allows more teeth to come in contact with the tubular.

Our proprietary True Grit® have set NEW industry standards in handling Corrosion Resistant Allows (CRA) tubular goods. True Grit® are used on chrome tubulars where reduced die penetration and die marking is desired. TRUE GRIT® dies are long lasting 3 times longer than competing technologies and perform better than any steel tooth die when running (SUPER or HYPER) Chrome. Tubular penetration of the True Grit® is less than half of API allowable surface defect area.

Our renowned free floating Tri-Grip®hydraulic backup provides unparalleled backup performance and is one of the industry"s closest tong mounting backups that minimize pipe bending. The backup utilizes three biting surfaces to insure a secure grip on the tubular to prevent tubular rotation.

Our remotely operated tongs provides a mean to control the tong for make-up and break-out operations. The tong is based upon the standard tong and backup configuration with the exception of hydraulic cylinders on the unit for remote control of the operations of the tong and backup. The functions include the tong door, backing pin, mechanical gear shift, power tong rotation, motor speed and backup gripping. Totally hydraulic with no electrical or electronic devices.

Eckel"s standard diesel or electric power packages at 65 GPM and 2,500 psi (246 LPM / 172 bar) are widely recognized for dependability and long, trouble-free service. Eckel will customize hydraulic power systems in the shortest possible time to meet "nonstandard" requirements for space, fluid flow, auxiliary power, and portability. Diesel driven units are optionally supplied with automatic shutdown systems to prevent engine run away when explosive gases are present. Additional shut downs include engine oil temperature, oil pressure, and fan belt breakage. All controls are either air, mechanical or electrical.

Eckel Manufacturing is committed to maintaining its position as an industry leader of the manufacturing of precision engineered specialty oil field equipment. It is our policy to provide our products at the highest quality that meets our customer"s requirements and demands.

Manufacturer of oil field and gas well equipment. Tubing, casing, drill pipe and riser hydraulic power tongs are available. Standard or custom diesel and electric driven hydraulic power units are also offered. Tong options include torque control system, door interlock, wrap-around dies, integrated hydraulic backups, case handles, tong straps, motor port relief valve and finger guard protection are provided. Suitable for oil or gas drilling, well completion and servicing applications. Secondary services include assembly, engineering, welding, cutting, heat treating, machining, testing and inspection. Serves oil and gas industries. CE certified. Made in the USA.

Established in 1958, Eckel is globally recognized as the leading manufacturer of hydraulic power tongs and hydraulic power units for the world’s oil and gas industries. We offer a full line of hydraulically operated drill pipe tongs, casing tongs, tubing tongs, hydraulic backups, hydraulic power units, and tong positioning equipment. Eckel delivers a comprehensive range of tongs from 2-1/16 through 36 in. for the most demanding onshore and offshore environments. Eckel Tri-Grip® backup is an industry standard for reliable make-up and break-out of tubular connections. Eckel’s cutting-edge designs, quality, and rugged durability have won us a world-wide reputation of a first-class product that insures years of trouble free service.

Eckel high-performance tongs operate in some of the toughest operating environments around the world performing drill pipe, casing and work-over activities on onshore and offshore locations. Eckel is highly involved in drilling, well servicing, and work-over operations.

We offer a full range of high quality casing and tubing, drill pipe tongs for use in all types of oil and gas drilling, well completion and well servicing activities. Our tongs have been engineered for the high operational torques today’s that premium connections require. Eckel tongs continue to advance the technology of tool service and setting industry standards.

Sliding heads with wrap-around dies are considered the best choice for thinner wall tubulars where point loading is a concern. The wrap-around dies are symmetrically spaced at all times insuring an equally distributed load on the tubular. A larger gripping surface allows more teeth to come in contact with the tubular.

Our proprietary TRUE GRIT™ dies have set NEW industry standards in handling Corrosion Resistant Allows (CRA) tubular goods. TRUE GRIT™ dies are used on chrome tubulars where reduced die penetration and die marking is desired. TRUE GRIT ™ dies are long lasting 3 times longer than competing technologies and perform better than any steel tooth die when running (SUPER or HYPER) Chrome. Tubular penetration of the TRUE GRIT™ dies is less than half of API allowable surface defect area.

Our renowned free floating Tri-Grip® hydraulic backup provides unparalleled backup performance and is one of the industry’s closest tong mounting backups that minimize pipe bending. The backup utilizes three biting surfaces to insure a secure grip on the tubular to prevent tubular rotation.

Our remotely operated tongs provides a mean to control the tong for make-up and break-out operations. The tong is based upon the standard tong and backup configuration with the exception of hydraulic cylinders on the unit for remote control of the operations of the tong and backup. The functions include the tong door, backing pin, mechanical gear shift, power tong rotation, motor speed and backup gripping. Totally hydraulic with no electrical or electronic devices.

Eckel’s standard diesel or electric power packages at 65 GPM and 2,500 psi (246 LPM / 172 bar) are widely recognized for dependability and long, trouble-free service. Eckel will customize hydraulic power systems in the shortest possible time to meet “nonstandard” requirements for space, fluid flow, auxiliary power, and portability. Diesel driven units are optionally supplied with automatic shutdown systems to prevent engine run away when explosive gases are present. Additional shut downs include engine oil temperature, oil pressure, and fan belt breakage. All controls are either air, mechanical or electrical.

Eckel Manufacturing is committed to maintaining its position as an industry leader of the manufacturing of precision engineered specialty oil field equipment. It is our policy to provide our products at the highest quality that meets our customer’s requirements and demands.

Eckel 7 5/8 HDS-30 Tong When application demand a wide range of sizes, this tong handles pipe sizes 2 3/8 inches all the way to 7 5/8. Built around the 7 5/8 Standard, the 7 5/8 HD provides a thicker rotary gear for more added strength, an additional idler gear, a larger pinion gear, and stronger bearings for load bearing capacity and durability. 7 5/8 HDS CHROMEBOSS: the 7 5/8 HD comes standard with pivot style heads; however, upon ordering can be supplied with slide-heads which is designated as 7 5/8 HDS. the 7 5/8 HDS is part of our CHROMEBOSS series of tongs that is suitable for running corrosion-resistant alloy (CRA) tubulars. Two slide heads in the tong provide a consistent radial load on the tubular, reduced tubular deformation, and when combined with our pyramid fine tooth or True-GritTM wrap-around dies provides excellent gripping capabilities on corrosion-resistant alloy (CRA).

Eclel Established in 1958, Eckel is globally recognized as the leading manufacturer of hydraulic power tongs and hydraulic power units for the world"s oil and gas industries. We offer a full line of hydraulically operated drill pipe tongs, casing tongs, tubing tongs, hydraulic backups, hydraulic power units, and tong positioning equipment. Eckel delivers a comprehensive range of tongs from 2-1/16 through 36 in. for the most demanding onshore and offshore environments, offer a full range of high quality casing and tubing, drill pipe tongs for use in all types of oil and gas drilling, well completion and well servicing activities.

Opration Manuals. Careers. Hydraulic Power Tongs. is the industry standard for reliable make-up and break-out of tubular connections that are optionally supplied with Eckel tongs. Utilizing two hydraulic cylinders and a three head arrangement ensures a slip-free operation. The backup is suspended at an adjustable level below the power tong Capacity: ½ in ( mm). Tubing Tongs / Parts Rod Tong and Frame Assembly Cat. # Ref. # OEM # Description Qty. Req. Box Sucker Rod Tong Assembly - Mark IV Rod Tong Less Inner Ring Back up 1 A/R Max Torque 1, ft./lbs. Max. Speed rpm: Hydraulic Requirement: 1, to 2, psi 13 gpm Frame Assembly 2 Outer Ring Wear Ring 1 A/R. 20 Hydra-SHift ® UHT Tong. When applications demand the combination of size and high torque output up to , ft-lb, the Eckel Model 20 Hydra-Shift® UHT handles pipe from 7 inches to 20 inches. By utilizing a two speed mechanical shift transmission in conjunction with the two speed Hydra-Shift® motor, the operator has a more flexible Capacity: in. ( mm).

MANUAL TONG DIES Pyramid, Coarse, Plain, Blue Diamond Tooth Web Wilson, B+V BV, BV, BV, Short Die for BJ Type B Manual Tong, BJ Drill Pipe Power Tong, Eckel Power Casing Tong, Farr Power Tongs, BJ Powermatic tong, Farr Power Tong, Weatherford 5 ½" 7 /8". Emery Eckel and Eckel Manufacturing have been awarded numerous State, National and International Awards and is known World-wide as the innovator of the Hydraulic Power Tong. Emery"s greatest accomplishment in life was the impact he had on the people that worked with him, worked for him, loved him and were inspired by him. Eckel Manufacturing Co., Inc. is a leading world-wide manufacturer of hydraulic power tongs. Founded in when Emery L. Eckel revolutionized hydraulic power tongs by chalking out his hydraulic power tong design on the floor. Since then Eckel now manufacturers 40 models of hydraulic power tongs for the oil gas industry. We of-.

BJ drill pipe power tong Eckel 5½ in. to 30 in. power tongs Farr power tongs CDI 12/box 1¼ slot 1/2 x 11/4 x 5 BJ types SDD, C, F and LF tong BJ power casing tong (4½ to 13⅜) WOOLLEY type super C, SLF and SDD tong CDI 12/box 1¼ slot * 1/2 x 11/4 x 5. We can supply those tong dies for BJ Type B, DB, B Extend/HT50, HT55, HT65 Manual Tong, Web Wilson AAX, H, Woolley Type Super A, B, B+V BV, BV, BV, BV, BJ Type SDD, C, F LF Manual Tong, BJ Power Casing Tong(4 ½ " 3/8"), Woolley Type Super C, Eckel model , Web Wilson, B+V BV, BV, BV, Short Die for BJ Type B Manual. Like all of our newly developed tongs, the 5½ incorporates the Hydra-Shift® technology, allowing the operator to shift from high speed to low speed without having to shift the tong manually. You will see many years of trouble-free operation, not to mention the smoother hydraulic shifting. With two models to choose from, Eckel has the right.

The present invention relates to a back-up power tong of the type commonly used in oil fields for use with an additional power tong in the making up and breaking out of threaded connections between drill pipes, casing, tubing, and the like.

The use of power tongs in making up or breaking out a drill string or casing section is well known and is now commonplace. Typically, when using such power tongs the conventional rig tongs are utilized to hold the lowermost section of the pipe joint being operated upon. However, only recently extremely high-torque power tongs have become available and, when applying such extremely high torques to a pipe joint or the like, the conventional rig tongs which are not powered are generally very large and cumbersome in order to be strong enough to withstand the high torques involved. Additionally, where a power back-up tong is to be utilized in a high-torque situation, it is desirable that the tongs be constructed in such a way that the power tongs may be placed on the pipe joint as close to the back-up tong as possible. This is especially true when operating with drill pipe, since only the pin and box are of special quality materials and it is at these surfaces that the heads of the two units must operate.

In utilizing a back-up tong with a power tong, it is also advantageous to ascertain the relative torque between the two units during the making up process, hence it is beneficial to provide the units with some degree of mutual freedom, so that a relative torque measurement may be made therebetween. Occasionally the situation arises in the drilling of a well that, during the makeup or breakout operation, the drill string is not held firmly by the collars or slips in the rotary table of the drilling platform and the drill string will therefore begin to slip down into the hole. If this occurs when using conventional back-up tongs, the tongs may be damaged severely since they will be pulled loose from the rig and smashed down against the drill platform floor.

The present invention provides back-up tongs employing sliding heads which are operated by specialized camming surfaces to provide a high-torque capability A motor, either electric, pneumatic, or hydraulic is provided to cause the back-up tongs to firmly grip the lowermost of the pipes at the joint. A removable cage plate is provided to carry the sliding heads, and the cage plate is constructed so as to provide a back-up tong wherein the sliding heads are as close to the top surface as possible, thereby permitting the power tongs and the back-up tongs to be positioned in close proximity to each other.

Hydraulically operated lever arms are employed at the bottom surface of the back-up tong to hold the cage plate in position in the main back-up tong body. The hydraulically operated hold-up arms have a preselected holding force such that if this force is exceeded, e.g., by the drill string slipping back down into the hole and tending to drag along the back-up tong and the power tongs with it, the preselected holding force will be exceeded and the hydraulic cylinders of the hold-up arms will then be released. In this manner the cage plate and sliding head assembly is permitted to separate from the body of the back-up tongs. This provides not only protection for the equipment but is also a safety feature for the personnel operating the back-up tongs. A motor or hydraulic cylinder is used to rotate the cage plate bearing the sliding heads relative to the specialized camming surface, thereby bringing the heads into contact with the pipe being held.

A crank operated backing pin assembly is provided which serves to locate a stop on the appropriate side of a backing lug so that after the sliding heads are rotated loose of the pipe, the cage plate assembly will rotate until it lines up with the opening in the tong and the tong may be taken off the pipe.

Accordingly, it is an object of the present invention to provide a back-up tong having sliding heads whereby a high torque may be provided to grasp a drill pipe or the like.

It is a further object of this invention to provide a back-up tong having a load cell so that the relative torque between the power tong and the back-up tong may be measured.

It is a further object of this invention to provide an improved method for measuring the torque being applied by a power tong to a drill pipe or the like.

It is another object of the present invention to provide a back-up tong having a releasable sliding head assembly such that the head assembly may be separated from the body of the back-up tong upon exceeding a predetermined force.

An additional object of the present invention is to provide a method for measuring torque being applied by a power tong to a rotatable portion of a tubular member or the like, comprising securing a back-up tong to a stationary portion of said tubular member preventing further arcuate rotation of said back-up tong, and inserting a force measuring device between a portion of said power tong and a portion of said back-up tong, and allowing said power tong to rotate in an arcuate path while turning said rotatable portion of said tubular member until said portion of said power tong comes into contact with said portion of said back-up tong.

Referring now to FIG. 1, the inventive back-up tongs 10 are shown in a typical combination with power tongs 12. The throat of the tongs 12 is made accessible to a tubing, casing, or pipe 13 by opening doors 14. Likewise, the throat of the back-up tongs 10 is made accessible to a similar tubing, casing, or pipe 15 by opening doors 16. The back-up tongs and power tongs are coupled by means of four large posts, which are threaded into the body of the power tongs. Two of the posts are seen at 18 and 20 and the back-up tongs are retained on the posts by large springs 22 and nuts 24. The function and detailed construction of this coupling means will be shown in more detail hereinafter.

FIG. 2 is a top plan view of the inventive back-up tongs 10 of FIG. 1. The door assembly 16 is the means for securing the throat or opening 30, which receives the pipe to be rotated. The two sliding heads 32 are suitably retained in a releasable cage plate assembly 36. The details of the cage plate assembly will be discussed in relation to a following drawing. The holes through which the four large posts (two of which were seen in FIG. 1 at 18 and 20) pass are shown typically at 38. These holes may be bored to a size which is larger in diameter than the outer diameter of the large posts 18 and 20, so as to permit a slight amount of movement between the back-up tongs and the main power tongs. The difference between the diameter of the posts and the holes should be such that when torque is applied to the power tong, the posts and the walls of the bored holes do not make sufficient contact so that torque is not applied to the back-up tong through the posts. Thus, an accurate torque measurement can be made between the power tong and the back-up tong by means of a load cell. In this regard, a stinger assembly 40 is mounted at the rear of the back-up tongs 10 which has a load cell 41 mounted thereon which cooperates with a box-like frame mounted on the main power tongs. The manner in which the back-up tongs stinger assembly 40 cooperates with the load cell 41 and the main power tongs to produce a torque measurement during a pipe joint make-up will be set forth in detail hereinbelow.

FIG. 3 is a side elevation of the inventive back-up tongs. Four legs, attached to the cage plate assembly 36, are provided to support the back-up tongs on the rig floor during the head changing operation and also during the waiting period in between operations. Two of the four legs are shown at 60 and 62. Located between these two legs 60, 62 is one of the two hold-up assemblies 64 which hold the cage plate assembly 36 onto the body of the back-up tongs 10. Also shown in this view is the backing pin assembly 66 which provides a crank stop for cooperating with a backing lug mounted on the cage plate 36 which allows the cage plate assembly to be aligned with the opening 30 after the jaws are retracted from the pipe. FIG. 3 shows a locating pin 68 and a tab 70 having a suitable hole therein, which cooperate during the assembly of the cage plate assembly 36 with the main body of the back-up tong 10 after these units have been separated. The hydraulic motor 72 which drives the pinion gear 44 of FIG. 2 is attached to extension 46 at the rear of the back-up tongs 10.

The motor 72 drives the pinion gear 44 and it may be seen that pinion gear 44 interacts with the gear segment 42. A specialized mounting bracket 100 is provided to mount the motor 72. As described above, the motor mount assembly 46 includes the bracket 100 and the pinion gear 44 affixed thereto. Cap screw 102 is typical of the bolts used to attach the gear segment 42 to the top plate 104 of the back-up tongs. Rollers 103 are secured to the specialized bracket 100 and follow recesses in the groove segment 104 in order that the motor mount assembly 46 may rotate relative to the gear segment 42. The tab 70 and locating pin 68 may also be seen in FIG. 4. Cap screw 105, which is shown with a cam follower 98A at the head thereof similar to cam follower 98, is used to secure plate 107 to the specialized cam ring 90.

Also shown in FIG. 5, is the backing lug 130 which is affixed by means of a fastener 132 onto the bottom of cage plate 96. As explained above, this backing lug 130 cooperates with the backing pin assembly 66 of FIG. 3 and serves to properly align the cage plate assembly with the opening 30 so that the tong may be taken off the pipe. Also seen in FIG. 5 is the tab 70 which interacts with the locating pin 68 so as to align the cage plate assembly 36 with the motor mount assembly 46 after the cage plate assembly has been separated from the back-up tongs.

Referring now to FIGS. 6 and 7, the inventive hold-up system 64 for releasably retaining the cage plate assembly 36 in the back-up tongs 10 is shown in more detail. The hold-up assembly 64 comprises L-shaped hold-up brackets 140 and 142 which are mounted on the bottom plate 143 of the back-up tongs by means of two pillow blocks 144 and 146 and a pillow block shaft 148. The pillow blocks 144 and 146 are suitably affixed to the bottom plate 143 and the bottommost portion of the cage plate hold-up brackets 140 and 142 is a hydraulic cylinder mounting shaft 150 which is attached by means of a block 152 to a cylinder stop collar 154, which is affixed to the shaft 156 of a hydraulic cylinder 158. The other end of the hydraulic cylinder 158 is affixed to the top plate 159 of the back-up tongs by means of two trunnion blocks 160 and 162. The cage plate hold-up brackets 140 and 142 are somewhat L-shaped and one arm thereof is affixed to the bottom plate of the inventive back-up tongs, and the other ends of the hold-up brackets 140 and 142 are provided with a support bracket 166 which has bolted thereto cam followers or the like, two of which may be seen at 168 and 170. It is these cam followers 168 and 170 which bear against the bottom surface of the bottom cage plate 96 and support its weight in cooperation with the hydraulic cylinder 158. Although two hold-up brackets 140 and 142 are shown in FIG. 6, it is apparent that any number of hold-up brackets may be used, although a single bracket may not be desirable for adequately supporting the cage plate assembly 36. The operation of this inventive hold-up system will be explained in detail hereinafter.

The operation of the inventive back-up tongs will be described based on the preceding figures, as well as additional FIGS. 8-10. When it is desired to make up or break out a pipe joint or casing joint employing the inventive back-up tongs in combination with a power tong unit, the units are typically suspended from the top of the drill rig by a chain or line so that the units may then be swung into place. The back-up tongs must then be clamped onto the lower of the two pipes, after the pipe has been placed into the throat 30 and the door assembly 16 has been securely fastened. Thereafter, the motor 72 is actuated causing the pinion gear 44 to walk around the gear segment 42, thereby driving the cage plate assembly in a rotary motion relative to the pipe segment and to the cam ring 90, such that the heads 32 and the head rollers 114 are driven out of a neutral cam position 180 and into engagement with the camming surfaces 182 or 184. It is understood that similar second camming surfaces, which may be seen in FIGS. 9 and 10, located on the opposite side of the cam ring 90 for driving in one of the heads 32. These camming surfaces 182 and 184 may be designed based on the "cam angle" technique, as described in U.S. Pat. No. 4,084,453. The camming surfaces enable the heads 32 and 32A to sufficiently bite the casing so that the casing will not slip relative to the back-up tong when a high torque is applied by the power tong.

As shown in FIG. 9, the rollers 114 and 114A are in their respective neutral cam positions 180 and 180A. The sliding heads 32 and 32A are therefore not in contact with the pipe casing and the back-up tong may be stated to be in the neutral position.

In FIG. 10, the motor 72 has been activated causing the pinion gear 44 to walk around the gear segment 42. This, in turn, causes the heads 32 and 32A to rotate in the counterclockwise direction and the rollers 114 and 114A ride up the cam surfaces 182 and 184A respectively. As shown in FIG. 10, the rollers are shown at the extreme end of the cam surfaces, which is most likely to occur if the casing is undersized. Since the rollers have moved up the cam surfaces, the heads 32 and 32A are pushed radially into the casing and the back-up tong is securely attached to the casing. As shown in FIG. 10, the position of the dies are such that the back-up tong is in a position for disconnecting joints of pipe. If pipe is to be secured together, the rollers 114 and 114A would be rotated to engage the cam surfaces 182A and 184, respectively.

Because the motor 72 is provided with a pressure release, upon firmly gripping the pipe the pressure in the motor builds up and the motor will then deactivate itself. At such time the power tongs being used in conjunction with the back-up tongs then grip and rotate the topmost pipe in the desired manner. If it is a make up operation, the stinger assembly 40 bearing the pressure cell 41 may then interact with the box-like portion on the power tongs and the torque gauge mounted on the power tongs will indicate the pressure at which the make up operation is completed. A reading of this make up torque indicates to the operator that sufficient torque has been applied to insure that the threaded connection has properly been made, and that an excessive torque has not been applied which may damage the connection. Further, the torque reading as described herein is more accurate than a pressure gauge attached to a snub line on the power tong, since the torque reading from the pressure gauge on the snub line will vary depending on the particular point where the snub line is secured.

In other words, as shown in FIG. 1, the power tong in the instant invention has an arm 41A which acts against the load cell 41 to produce a torque measurement. Since the location of the load cell is fixed relative to the back-up tong and the arm 41A is fixed relative to the power tong, a force measurement on the load cell 41A will result in an accurate torque measurement. If the torque developed by the power tong is measured by a pressure gauge secured to a snub line, the angle formed by the snub line relative to the power tong will affect the reading on the pressure gauge in the snub line. In the break out operation, it is to be understood that the torque reading may not be necessary. In the embodiment shown in FIG. 1, the arm 41A would move away from the load cell 41 during the break out operation. Movement between the power tong and the back-up tong is limited, however, since the posts 60, 62 soon come into contact with the walls of the boreholes 38.

At the conclusion of the make up or break out operation, the heads must be removed from the lowermost pipe. In order to accomplish this, the motor 74 is then driven in the reverse direction and the heads 32 disengage the pipe. The motor continues to rotate in the reverse direction until the backing lug 130 contacts the backing pin assembly 66. At the conclusion of this operation, with the heads 32 being retracted by action of the springs 118, the motor will once again stop since it has reached the preselected maximum fluid pressure, due to the interaction between the backing lug 130 and the backing pin assembly 66. At this time, of course, the cage plate assembly 36 and the cam ring 90 have their openings aligned at the throat 30, thereby permitting disengagement of the back-up tong from the pipe.

The manner in which the sliding heads 32 may be changed in the inventive back-up tongs will now be described. It is understood of course, that changes of the sliding heads may be necessitated first by routine maintenance or secondly in the case that the back-up tongs are to be used with a pipe or casing of a different size thereby necessitating the use of a different set of heads which correspond to the outer diameter of the pipe to be grasped. It is understood that when gripping smaller diameter pipe, the heads are larger and vice versa. In performing such operation the back-up tongs may be set on the rig floor so that they are resting upon the four legs 60, 62 which are attached to the cage plate assembly 36. While the back-up tongs are now resting on these legs 60, 62 the hydraulic circuit may be operated to release the hydraulic cylinder 158 in the hold-up assembly 64, thereby permitting the hold-up brackets 140, 142 to move in a downward direction, thereby releasing the cage plate assembly 36. At that time, the body of the back-up tongs may be lifted upwards leaving the cage plate assembly 36 remaining on the rig floor supported by the four legs 60, 62. Springs 118 may then be released thereby freeing pins 120 and permitting them to be removed from bores 122. The inventive heads are slid back out of the cage plate and the new heads inserted. The back-up tong body is lowered back down over the cage plate assembly 36, which is resting on the rig floor on the four legs 60, 62. During this reassembly operation care must be taken to make sure that the lug 70 having the hole therein is correctly positioned such that the pin 68 be aligned therein. The hydraulic circuit is now actuated to drive the hydraulic cylinders 158, so that the hold-up assembly 64 is driven upwardly, thereby causing the cam followers 168 and 170 to abut the lower surface 96 of the cage plate assembly 36. At that time, the back-up tongs are then once again ready for use.

Abstract: A power tong includes a frame and a pipe-gripping mechanism associated with a throat at one end of the frame. Power is transmitted to the pipe-gripping mechanism from a power unit through a drive train. The pipe-gripping mechanism cooperates with the throat to receive a pipe section to be rotated and includes a partial ring rotatably mounted within the frame and having an opening which may be aligned with the throat. The ring may be rotated in either direction by the power unit. Mounted on the tong is a die carrier which is rotatable relative to the ring. Die members are mounted on the die carrier and include dies positioned to grip the external surface of the pipe section. The die members are arranged to cooperate with cam surfaces on the ring so that, when the ring is rotated relative to the die carrier, the dies are moved rectilinearly into engagement with the pipe section.

We have wholesale hydraulic tong dies for all sorts of products on Alibaba.com, one of the biggest online marketplaces for B2B shopping. We have mold fabrication services for injection molds available for small, functional complex items and also large designs like for bolection molds that serve as decorative plating on doors.

Finding the right hydraulic tong dies is easy here. Starting with your design and material, you can decide if injection molding is right for you and what material of mold you would like. Iron molds and molds made out of other materials are available. These experts will also work on your mold until you are satisfied with the products coming from it which means creating several test samples to make sure the a mould is working exactly as intended.

When buying a hydraulic tong dies, you can also minimize your production costs in the future by standardizing some elements of the mold. This means that if you have multiple molded products, you can ask for standard lift bars, connection sizes and clamp slots across all your molds to make them easy to use.

© Copyright 1989, Eckel Manufacturing Co., Inc. All rights reserved. No part of this manual may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the written permission of Eckel Manufacturing Co., Inc.

Eckel is a registered trademark of Eckel Manufacturing Co., Inc. Loctite is a registered trademark of Loctite Corporation 13-3/8 Standard Hydraulic Power Tubing Tong is covered by U.S. and Foreign Patents and Pending Patent Applications

Section 5 - Troubleshooting, Repair and Overhaul   .................................. .29 Troubleshooting ..................................................................................................30 Repair ..................................................................................................................31 Tong Overhaul ....................................................................................................31 M4D Motor Overhaul .........................................................................................32 A35 Valve Overhaul ...........................................................................................35

Section 6 - Parts List  ....................................................................................................... .37 Parts List, Eckel 13-3/8 Standard Tong .............................................................. 38 Parts List, Clutch Assembly ................................................................................ 42 Parts List, Pinion Idler Assembly .......................................................................43 Parts List, Pinion Assembly ................................................................................ 44 Parts List, Rotary Idler Assembly ....................................................................... 45 Parts List, M4D Motor Assembly .......................................................................46 Parts List, A35 Valve Assembly .........................................................................48 Parts List, Hydraulic Cam Backup ...................................................................... 59 Parts List, Tong Suspension ................................................................................ 56 Parts List, Door Interlock Assembly ................................................................... 57 Microswitch Assembly .......................................................................................60

INTRODUCTION This manual describes the function, operation and maintenance of the Eckel 13-3/8 Standard Hydraulic Power Casing Tong. This section provides a functional description, system specifications, and a description of options and accessories available. Section 2 through 5 present the operating and maintenance aspects of the tong and Section 6 provides a fully illustrated parts list. The 13-3/8 Standard Tong, Figure 1-1, handles casing sizes as small as 4 inch and as large as 13-3/8 inches diameter. The open-throat design, combined with high-speed operation, assures both ease and speed in tubular handling. A safety door on the open throat helps insure against accidents. The following paragraphs describes the functions of the tong during tubular make-up or break-out operations.

Figure 1-1 Functional Elements of the 13-3/8 Standard Tong 13-3/8 Standard Tong is covered by U.S. and Foreign Patents and Pending Patent Applications

FUNCTIONAL DESCRIPTION Operating from a hydraulic power unit, the power tong provides torque of 22,000 ft-lbs. The heart of the unit is a head-closing system which forces the heads together and rotates them by means of a cam-type rotary gear. The rotary gear is driven by a two-speed gear train powered from a vane-type hydraulic motor. In operation, the tong is suspended over the well bore on a chain bridle. Snub lines restrain the tong from moving around the pipe as torque is applied. HYDRAULIC DRIVE SYSTEM. Figure 1-2 is a hydraulic schematic of the drive system. Hydraulic pressure from a separate power unit is applied through screw-type hose connectors having built-in check valves. To prevent cross-connection of the hoses, the pressure hose from the power unit is designed to mate with a 1-inch connector and the return hose mates with a 1-1/4 inch connector. Connection of the hoses opens the check  valves to provide hydraulic pressure to the tong. The tong control levers acts as a throttle valve for the unit. Pushing the lever applies pressure to drive the motor in a forward direction (for make-up operation) and pulling the lever applies pressure in a reverse direction (for break-out operation). While the lever is in a neutral position, fluid circulates freely through the valve and back to the return line. Refer to Section 3 for tong control lever positions.

An adjustable relief valve permits adjustment of the operating pressure at the tong if  desired, and a built-in pressure gauge indicates the operating pressure at all times. The maximum pressure available, of course, depends upon the power unit. A power unit capable of delivering 2,500 PSI and 30 GPM and 1000 PSI at 65 GPM is necessary in order to obtain the maximum rated output of the power tong. A hydraulic motor is mounted on the top tong plate through a motor adaptor, and the

other hydraulic plumbing components are also mounted on the top tong plate. GEAR TRAIN AND CLUTCH FUNCTION. Closure and rotation of the pipe-gripping heads are accomplished by means of a large rotary gear having its inner diameter formed into a double cam surface. This topic explains how mechanical power is transmitted from the hydraulic motor to turn the rotary gear in either direction. Gear Train Elements.  The gear train, Figure 1-3, comprises a motor gear, the clutch assembly, pinion assembly, pinion idler, two rotary idlers and the rotary gear. The rotary gear rides within a circle of dumbbell rollers that support the gear. The selected high- or low-speed clutch gear engages the corresponding high or low-speed pinion gear, and the

pinion output gear drives the two pinion idlers gears whin in turn drives the two rotary idlers. In driving the rotary gear, two rotary idler gears are necessary to bridge throat cut out gap. Clutch.  The clutch assembly (Figure 1-3) provides high- or low-speed operation, allowing faster operation when high torque is not required. When higher torque is needed, the low-speed gear permits the operator to slow the speed down and increase the torque. The operator shifts the speed by raising or lowering a shifter lever on top of the tong. As shown in the illustration, lifting the shift lever lifts the shifting yoke, which lifts the shifting collar. In this position, the shifting collar mechanically couples the clutch shaft with the high-speed clutch gear. Lowering the shifting lever lowers the shifting yoke which lowers the shifting collar, thereby mechanically coupling the clutch shaft with the low-speed clutch gear. Then the selected clutch gear drives the corresponding pinion gear as previously described. An adjustable spring detent on the shifting shaft holds the yoke and shifting lever in the selected position until again moved by the operator. HEAD OPERATIONS. The sliding heads are enclosed within the rotary gear by the top and bottom cage plates. The heads are closed, rotated and opened by the combined actions of the rotary gear, brake bands and backing pin. Rotary Gear/Head Functions.  During make-up operations, the pipe to be turned is first enclosed in the tong, and the throat safety door is closed. Then with the backing pin in the make-up position (described later) the operator pushes the tong control lever forward to cause the heads to bite and rotate the pipe. To release the heads and back off  from the pipe, the operator pulls the tong control lever outward. During break-out operations, the backing pin is placed in the break out position so that the heads bite in the reverse direction (see Backing Pin Function). Then the operator pulls the tong control lever to cause the heads to bite and break out the pipe. Finally, he pushes the lever forward to release the heads and back them off the pipe. As illustrated in Figure 1-4, the head-biting action is a function of the rotary gear inner surface cam design. When the rotary gear begins to rotate, the head rollers roll up on the cam surface and force the sliding heads inward until the heads bite the pipe. Further rotation then turns the pipe to make-up (or break-out) the joint.

BACK CAGE PLATE BOLT CAM FOLLOWER TOP TONG PLATE TOP CAGE PLATE

Brake Bands and Safety Door cage plates have unrestrained freedom to rotate, the heads will simply move with the rotary gear and will not cam up on the rotary cams to force the biting action. Figure 1-6 illustrates how brake bands are placed around the cage top and bottom plates to exert continuous friction on these plates and to restrict their freedom to move. Thus it is evident that the brake bands do not permit the cage plates (and heads) to turn freely when the rotary gear turns. Rather, the cage plates are held stationary as the head rollers roll up onto the cam surfaces to force the heads in against the pipe. As the heads bite the pipe, the friction of the brake bands is overcome. Then the cage plates begin to rotate with the rotary gear, thus turning the pipe that is now gripped firmly by the heads. Backing Pin Function. The backing pin shown in Figure 1-5 permits the heads to bite in the forward direction for make-up and in the reverse direction for break-out. When the pin is placed in the left-hand hole, forward operation causes the heads to bite and rotate to make up the joint. However, reverse operation causes the backing lug to strike the backing pin and force the cage plates around with the rotary gear. Thus, in the reverse direction, the head rollers cannot cam up on the rotary cam and the heads do not bite. If the backing pin is placed in the right-hand hole, the opposite action occurs and reverse operation causes the heads to bite, while forward operation causes the backing lug to strike the backing pin and force the head cage around with the rotary gear, thus inhibiting the heads from biting in the forward direction. In summary then: for make-up, the backing pin is placed in the left-hand hole and the heads bite in forward direction; and for break-out, the backing pin is placed in the right- hand hole and the heads bite in the reverse direction. Open Throat and Safety Door.   The open throat design permits ease of operation by permitting entry of vertical pipe that projects above the level of the tong. For safety purposes it is necessary that the throat opening be closed during operation to prevent personnel injuries or damage to the equipment. A safety door (Figure 1-6) serves both to close off the front during operation and to provide an extra margin of support for the housing during high-torque operation. An optional Door Interlock (Figure 6-9) device adds additional margin of safety, preventing the tong from operating while the tongs door is open.

SPECIFICATIONS The specifications for an operating tong must consider the hydraulic power unit as well as the tong itself. HYDRAULIC POWER UNIT SPECIFICATIONS. The power tong is designed to be powered by a hydraulic power unit capable of delivering at least 2500 pounds per square inch (PSI) for maximum rated operating torque. At least 65 gallons of hydraulic oil per minute, depending upon the power unit used, are required to operate the tong at maximum RPM. TONG SPECIFICATIONS.  Table 1-1 list the specifications for the Eckel 13-3/8 Standard Casing Tong.

OPTIONS AND ACCESSORIES Options for the 13-3/8 Standard Tubing Tong include lift cylinder with lift cylinder control, spring hanger, torque gauge, manual backup and door interlock. The optional items are described in the following paragraphs. LIFT CYLINDER AND CONTROLS.  A lift cylinder as illustrated in Figure 2-3 is optionally supplied with the 13-3/8" tong. This cylinder provides a means for raising and lowering the tong during operations. Lift Cylinder.  While the lift cylinder may be connected directly to the tong bridle, it is suggested that the optional spring hanger be inserted between the lift cylinder and theTable 1-1Specifications Eckel 13-3/8 Standard Tong

Torque: Dimensions: High Gear (Range) ...................... 4,400 ft/lbs Length ........................ 61 inches (1549 mm)  (5,966 nm) Overall Width ..................34 Inches (864mm) Low Gear (Maximum) ............... 22,000 ft/lbs Pipe Space Required ... 7.5 inches (191 mm) (29,828 nm) Max. Elevator Diameter ............... (Unlimited- Tong comes off Pipe) Torque Handle Lengths: Pipe C.L. to Anchor C.L. 36 Inches (914 mm) Standard .................................. 36" (914 mm) Weight: RPM: Approximately ......... 1,260 Pounds (571 kg.) High ..................... 85 at 65 GPM (250 L/min) Low ...................... 16 at 65 GPM (250 L/min) Heads Available: For Tubing Size O.D.: .... 4", 4-1/2", 5", 5-1/2" Hydraulic Requirements:*  6-5/8", 7", 7-5/8", 8-5/8" 65 G.P.M. (250 L/min) at 1,000 P.S.I. (68 bar) 9-5/8", 10-3/4",11-3/4",13-3/8" 30 G.P.M. (113 L/min) at 2,500 P.S.I. (172 bar) NOTE: Any size head between 4" and 13-3/8" may Hyd. Oil Operating Temperature: be specified as needed. Normal .................................. 130° F. (54° C) Maximum .............................. 180° F. (82° C) * These are average requirements for a new tong.   There may be some variations from tong to tong.

bridle to permit tong movement during make-up or break-out operations without exerting undue stress on the bridle and dies. Lift Cylinder Controls. When a lift cylinder is ordered with a tong, the tong contains an additional control lever for controlling the lift cylinder movement. The control lever- operated valve is identical to the tong operating control lever. This lever is illustrated in Figure 3-1 and its operation is shown in Figure 3-2 and Table 3-1. Pulling the control lever outward provides hydraulic pressure from the hydraulic power unit to operate the lift cylinder upward, and thus raise the tong. While pushing the control lever forward operates the cylinder downward to lower the tong. The center lever position is the neutral position and does not operate the cylinder in either direction. The maximum travel of the lift cylinder is 6 feet. SPRING HANGER. The optional spring hanger (Figure 2-3) is designed to permit the tong to move up or down to allow for thread length in make-up and break-out operations. When used, the spring hanger should be attached directly to the tong bridle ring and used as a hanger for the tong. TORQUE GAUGE ASSEMBLY. The optional torque gauge assembly (Figure 2-2) is used to measure the torque exerted in make-up or breakout operations. Consisting of a hydraulic cylinder and torque gauge connected together by a pressure hose, the torque gauge assembly senses and indicates the torque developed during an operation. For operation, the hydraulic cylinder is connected by a shackle to the rear of the tong; and a snub line is connected to the cylinder. The snub line is tied off to a solid part of the rig structure to form an angle of 90° in order to indicate accurate torque readings. HYDRAULIC CAM BACKUP AND CONTROLS. A hydraulic backup tool as illustrated in Figure 1-8 is optionally supplied with the 5-1/2 Standard Tong. In opera- tion this tool provides a backup when in break-out or make-up situations. The specifica- tions for the hydraulic backup are supplied in Table 1-2.

These figures are estimated average torque with mechanical and hydraulic losses taken into account. Actual performance will depend upon the condition of the tong.

Dimensions (Tong and Backup): Length ......................... 61 inches (1550 mm) Height ..................... 58.5 inches (1486 mm) Overall Width .............. 43 inches (1092 mm)

Weight: Approximately  (Tong and Backup) .... 2,950 lbs (1,338 kgs)

HYDRAULIC CAM BACKUP.  The hydraulically operated backup tool, in utilizing the same biting principal as the power tong, uses a cam and pivot head arrangement to insure slip-free operation. The stinger part of the backup, extending from the rear of the unit is inserted into the torque bracket mounted on the underside of the tong. This method of hook up prevents movement of the tong about the pipe during torquing operation. Between the stinger and bracket is located the torque gauge compression load cell. During make-up or break-out operations, the tong unit rotates slightly causing the stinger to compress the load cell, torque readings are available in make-up or break-out, depending on position of load cell in bracket. The load cell should be on the operator side of the backup stinger for make-up and for break-out the load cell would be inserted on the opposite side of the backup stinger to register the torque. The compression force is translated to torque which is indicated on the torque gauge connected to the load cell. The hydraulic cam type backup requires a 36-inch torque gauge handle which offers direct reading of torque between the backup and the tong. The hydraulic backup is suspended at an adjustable level below the power tong by means of three hanger legs and springs. This set up allows the backup to remain stationary while the power tong moves vertically to compensate for thread travel of the connection. Hydraulic Backup Controls.  When a hydraulic backup is ordered with a tong, the tong contains an additional control lever for controlling the backup and a directional valve for controlling the rotation of the backup. These levers are illustrated in Figure 3-1 and its operation is shown in Figure 3-2 and Table 3-1. Pushing the control lever inward provides hydraulic pressure from the hydraulic power unit to rotate the backup cage plates clockwise for make-up or counter-clockwise for break-out and engages the heads on the pipe. Pulling the control lever disengages the backup heads from the pipe. The

Non Upset & External Upset Integral Joint Connections Tong and Cam-Type Backup Cam-Type Tong and Cam-Type Backup Biting Locations Backup Dies Biting Locations

Figure 1-9 Make-up and Break-out Biting Locations backup cage plates are always rotated in the direction that the tong will turn and by using the directional control lever the operator controls which direction the backup rotates. Adjusting Backup Spacing.  The vertical spacing between the backup and tong is adjustable in steps using different sets of holes in the hanger legs for the bolts which hold the backup hanger springs in position. There are four sets of holes located at various distances below the tong. The distance of these holes from the midpoint of the tong dies to midpoint of backup dies is described in Table 1-4. Close spacing between the backup and tong is desirable from the standpoint of insuring the closest possible length of contact between the dies and pipe. This is particular important