tang drive hydraulic pump made in china

148 hydraulic pump tang shaft products are offered for sale by suppliers on Alibaba.comAbout 48% % of these are hydraulic pumps, 33%% are pumps, and 1%% are other hydraulic parts.

A wide variety of hydraulic pump tang shaft options are available to you, You can also choose from gear pump, hydraulic pump tang shaft,as well as from 1 year, 3 months, and 3 years hydraulic pump tang shaft,And whether hydraulic pump tang shaft is hydraulic power units, {2}, or {3}.

If you are replacing an existing pump, provide us with the manufacturer’s name and any visible part numbers and a photo if possible. If the pump is on an electric motor, details or a photo of the motor ID plate will also be very helpful in ensuring we can provide you with the right pump.

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Mini hydraulic gear pumps flat tang shaft for sale. Durable pumps 3900 PSI, 1-year warranty, free shipping within Continental US. Made in Europe with US standards.

Among the earliest inventions were the abacus, the sundial, and the Kongming lantern.compass, gunpowder, papermaking, and printing – were among the most important technological advances, only known to Europe by the end of the Middle Ages 1000 years later. The Tang dynasty (AD 618–906) in particular was a time of great innovation.Chinese discoveries up to the Qing dynasty.

The mechanical engineer Ma Jun (c. 200–265 AD) was another impressive figure from ancient China. Ma Jun improved the design of the silk loom,chain pumps to irrigate palatial gardens,puppet theatre for Emperor Ming of Wei, which was operated by a large hidden waterwheel.south-pointing chariot, a complex mechanical device that acted as a mechanical compass vehicle. While the exact mechanism is unclear, scholars think it incorporated the use of a differential gear in order to apply equal amount of torque to wheels rotating at different speeds, a device that is found in all modern automobiles.

The "Four Great Inventions" (simplified Chinese: 四大发明; traditional Chinese: 四大發明; pinyin: sì dà fāmíng) are the compass, gunpowder, papermaking and printing. Paper and printing were developed first. Printing was recorded in China in the Tang dynasty, although the earliest surviving examples of printed cloth patterns date to before 220.Louen-heng, composed between AD 20 and 100,Chinese literature appear in 1086.

Among the engineering accomplishments of early China were matches, dry docks, the double-action piston pump, cast iron, the iron plough, the horse collar, the multi-tube seed drill, the wheelbarrow, the suspension bridge, the parachute, natural gas as fuel, the raised-relief map, the propeller, the sluice gate, and the pound lock. The Tang dynasty (AD 618–907) and Song dynasty (AD 960–1279) in particular were periods of great innovation.

The equally talented statesman Su Song was best known for his engineering project of the Astronomical Clock Tower of Kaifeng, by 1088 AD. The clock tower was driven by a rotating waterwheel and escapement mechanism. Crowning the top of the clock tower was the large bronze, mechanically driven, rotating armillary sphere. In 1070, Su Song also compiled the Ben Cao Tu Jing (Illustrated Pharmacopoeia, original source material from 1058 to 1061 AD) with a team of scholars. This pharmaceutical treatise covered a wide range of other related subjects, including botany, zoology, mineralogy, and metallurgy.

There were noted advances in traditional Chinese medicine during the Middle Ages. Emperor Gaozong (reigned 649–683) of the Tang dynasty (618–907) commissioned the scholarly compilation of a Bencao Tujing ("Illustrated Pharmacopoeia"), the scholar-official Su Song (1020–1101) not only systematically categorized herbs and minerals according to their pharmaceutical uses, but he also took an interest in zoology.crab Eriocher sinensis found in the Huai River running through Anhui, in waterways near the capital city, as well as reservoirs and marshes of Hebei.

Although the Bencao Tujing was an important pharmaceutical work of the age, Su Song is perhaps better known for his work in horology. His book Xinyi Xiangfayao (新儀象法要; lit. "Essentials of a New Method for Mechanizing the Rotation of an Armillary Sphere and a Celestial Globe") documented the intricate mechanics of his astronomical clock tower in Kaifeng. This included the use of an escapement mechanism and world"s first known chain drive to power the rotating armillary sphere crowning the top as well as the 133 clock jack figurines positioned on a rotating wheel that sounded the hours by banging drums, clashing gongs, striking bells, and holding plaques with special announcements appearing from open-and-close shutter windows.motive power to the armillary sphere via hydraulics in 125 CE,Yi Xing (683–727) in 725 CE who first applied an escapement mechanism to a water-powered celestial globe and striking clock.Zhang Sixun (fl. late 10th century) employed liquid mercury in his astronomical clock because there were complaints that water would freeze too easily in the clepsydra tanks during winter.

The Jesuit China missions of the 16th and 17th centuries introduced Western science and astronomy, then undergoing its own revolution, to China. One modern historian writes that in late Ming courts, the Jesuits were "regarded as impressive especially for their knowledge of astronomy, calendar-making, mathematics, hydraulics, and geography."Society of Jesus introduced, according to Thomas Woods, "a substantial body of scientific knowledge and a vast array of mental tools for understanding the physical universe, including the Euclidean geometry that made planetary motion comprehensible."

After entering the 21st century, in order to achieve environmental sustainability, environmental protection technology and information technology of construction machinery are put forward, which makes construction machinery enter a new stage of development. European and American markets have put forward stricter requirements for noise control of construction machinery products. Gear pumps are the units that perform the energy conversion from the mechanical energy to the pressure energy of oil. They are extensively used in construction machineries due to their advantages such as small size, light weight, insensitivity to oil pollution, reliable operation, good performance, and low production costs [1,2]. However, their significant disadvantage is relatively high noise emission [3]. Construction noise can cause a series of detrimental health effects on human beings, such as noise-induced hearing loss [4], arrhythmia, dyslipidemia, cancer, thyroid gland disorders and psychic disorders, and so on [5]. Therefore, the construction noise level must be reduced in order to develop environmental sustainability and improve the market competitiveness of construction machinery.

In addition to sustainable development needs, reducing noise levels can also increase the life and reliability of equipment. At present, many scholars are studying the noise generation mechanism and noise reduction strategy of gear pump. Many studies have shown that pressure and flow pulsations are the main causes of noise generation, not the noise radiation of the pump itself. The intrinsic noise of gear pumps mainly depends on the vibrations and dynamic load on the gears. These dynamic loads are transmitted through the bearings in pump housing and generate noise [7]. Mucchi [8] thought that the noise levels are the consequence of the dynamic forces within the gear pump system, related with the flow and pressure ripple as well as the variable meshing stiffness and gear errors. Zhao [9] believed that in the design of the involute tooth profile of the traditional external gear pump, the inherent cause of significant flow inhomogeneity leads to undesired noise emissions and mechanical vibrations for involute teeth design of the traditional external gear pump. Therefore, continuous-contact helical gear pumps were proposed and successfully commercialized to replace the traditional gear pumps in the recent past. However, the high manufacturing cost of helical gear restricts its popularization and application in construction machinery. Some scholars have also carried out research work on noise reduction of piston pumps [10,11].

Independent component analysis (ICA) is a technique recently used in data analysis and signal processing. It is used in many fields: Blind source separation [12], image restoration of blurred images [13], brain magnetic resonance image analysis [14], telecommunications [15], financial data analysis [16], facial identification [17], and so on. In this paper, ICA methods were used in the signal processing of gear pumps. The purpose of using ICA signal separation is to verify the effectiveness of gear pumps before and after optimization.

In order to avoid the deviation of gear pump noise caused by other components in the whole machine noise test, the following two effective measures were adopted in this paper: The noise test rig of the gear pump was set up to avoid the influence of other noise sources, and the noise signals of gear pumps were separated by using the ICA model. The noise generation mechanism of the gear pump was analyzed by combining theoretical analysis with the finite element analysis (FEA) method. A noise reduction strategy of gear pumps was put forward based on the above analysis. Finally, noise tests were carried out to verify the effectiveness of noise reduction.

l Protect drive shaft seal during pump painting. Check if contact area between seal ring and shaft is clean: dust could provoke quicker wear and leakage.

Use specific mineral oil based hydraulic fluids having good anti-wear, anti-foaming, antioxidant, anti-corrosion and lubricating properties. Fluids should also comply with DIN51525 and VDMA 24317 standards and get through 11th stage of FZG test.

[0015] with reference to the accompanying drawings, in all figure, wherein identical reference character shows the sectional view of dual input clutch transmission or DCT speed changer 10 corresponding to same or analogous parts among Fig. 1 a.For the sake of simplicity, only be shown with respect to an axial part of the DCT speed changer 10 of its main center line or spin axis 12.DCT speed changer 10 has hydraulic pressure torque converter device or torque-converters 18, and it is arranged in the shell 14.Shell 14 is cast, is welded or forms by other mode, operatively is connected with the main-gear box 20 of similar casting.DCT speed changer 10 further comprises hydraulic transformer pump or coaxial pump 24, and it surrounds at least in part or around axis 12, term " coaxial (on-axis) " has indicated the correlative positional relation of coaxial pump 24 and axis 12.

[0016] be installed in contiguous or coaxial pump 24 back be dual input clutch device 26, described device is placed in the independent clutch housing 80.The back hub prolongation 50 of clutch housing 80 by fully hard structural support or coaxial pump 24 is operably connected and supports, and is used for reducing the demand to the extra structural support members of clutch housing 80.Dual input clutch device 26 comprises first, second input clutch 30A, 30B, and they preferably all are respectively wet type template friction clutch groups, directly is communicated with coaxial pump 24 by one or more internal fluid channels 54.When the transmission of fluid (not shown) or be transported to dual input clutch device 26 with lubricated and when cooling off the first and second clutch 30A, 30B, internal fluid channels 54 annular preferably in section is so that make fluid friction minimization of loss in the fluid passage.

[0017] still with reference to figure 1, torque-converters 18 comprises torque-converters pump 58, turbine 46, stator 72, with the lid 42 and the converter clutch device 48 of protruding tang 40.10 li of DCT speed changers, turbine 46 is operatively connected to transmission gear case (not shown), preferably only is driven when DCT speed changer 10 runs well.Rotatable torque-converters hub 22 is given prominence to or extension to the direction of axle from torque converter pump 58, and has groove disposed thereon 32.Hub 22 is operatively connected to torque-converters pump 58 and is connected to lid 42, and the both is connected with the motor (not shown) in the mode that drives.Therefore, when motor moved, torque converter pump 58 and lid 42 received moment of torsion from motor continuously, and were driven or rotate with engine speed.

[0018] above describes in front, coaxial pump 24 preferably to small part surround or around and be the center with rotatable hub 22, therefore the axial packing space requirement amount between torque-converters 18 and the dual input clutch device 26 is minimized, also provide simultaneously a torque-converters 18 and dual input clutch device 26 can be attached to top rigid construction, as shown in fig. 1 to support.Coaxial pump 24 comprises the pump housing 25, and it comprises the rotor set 70 with actuator 75 and driven member 71; Various valve (not shown)s, its configuration and installation are to control the operation of coaxial pump 24; With pump cover 27, be used for covering and protecting multiple internal pump member.The pump housing 25 and pump cover 27 can be made by any suitable iron and/or nonferrous material compound, and this depends on the design needs, for example except coaxial pump 24 inner load or the power that produce, support various outside plus load or power.

[0019] coaxial pump 24 and/or pump cover 27 preferably comprise one or more internal fluid channels 31,37 respectively, so that transmission or guide oil or fluid to dual input clutch device 26, also make the demand of extra external fluid connector minimize simultaneously by coaxial pump 24 effectively.In addition, settle coaxial pump 24 and/or pump cover 27 may promote gear shift process faster by this way, because the distance that fluid passes through from torque-converters 18 to dual input clutch device 26 is shorter more direct.Internal fluid channels 31,37 may be taked various forms, for example, forms various die castings or sand casting passage or path for 27 li in cast iron pump body 25 and/or main body pump cover, perhaps can be holed and/or polish/machined into therein.Internal fluid channels 31,37 optionally comprises or connects the hydrovalve (not shown) and is used for regulating or restrictive pump pressure and/or fluid flow, and/or be used for regulating and flow to dual input clutch device 26, torque-converters 18 and/or converter clutch device 48, and/or the required fluid flow of other speed changer member.

[0020] pump cover 27 is abundant hard fixing-assemblys, have the back hub and prolong parts 50, for dual input clutch device 26 provides further support structure, and operatively be connected with stator axis 60 with easier arrangement stator 72, described connection preferably uses dentation press fit and/or one or more lug/bolt (not shown) to realize.Stator axis 60 is the hollow concentric shafts preferably, is fixed in the inner radial of hub 22.According to mentioned above, hub 22 has one or more grooves 32, is used for operatively connecting or is fixed to supporting tang or tang 35, and described tang is connected to or is formed on the driven unit 75 of rotor set 70.Be used for replacing tang/groove drive unit, " plate " alternately is used on hub 22 and the actuator 75.Those skilled in the art recognize that also multiple within the scope of the present invention other drive unit can be used to replace groove/tang or plate, with hub 22 and the rotor set 70 of being operably connected, and for example associated gear tooth or other suitable drive mechanism.

[0021] in order further to reduce DCT speed changer 10 axial space demands, coaxial pump 24 preferably has the fixed displacement pump of gerotor gear train, although can use other various pump patterns and rotor set 70 within the scope of the invention.For example, involute gear or other gear forms or shape, perhaps wing pump, that determine or variable fixed displacement pump or other common pump pattern or design are all within the scope of the invention.The described rotary pump housing 25 and its inner rotator group 70 preferably are made of same or similar material, iron or non-iron, so be provided at similar thermal expansion coefficient between the pump housing 25 and the rotor set 70, therefore allow nearlyer inside spacing of gathering, leak thereby reduce internal flow.

[0022] turn to Fig. 2 A, shown second embodiment of packing structure who uses a kind of replacement, therein, the coaxial pump 24 among Fig. 1 be installed in away from or leave replacing of axis 12 from axle pump 124.Preferably being connected to or being rotated torque-converters hub 22 by first gear or sprocket wheel wheel 92 in drivable mode from axle pump 124 drives, described gear 92 has a plurality of radially outstanding wheel teeth 90, and described wheel tooth 90 can cooperate with the chain link 78 of chain 88 or mesh.As describing among Fig. 2 A, from axle pump 124 be placed or at interval above axis 12 or side direction away from it, although one of ordinary skill in the art would recognize that the location that can use various alternate manners or position are as axial restraint design and packing demand regulation.

[0023] turn to Fig. 2 B, this is a schematic side elevation, the AA that takes from Fig. 2 A to, such as hereinbefore description, rotating torque-converters hub 22 rotates synchronously with the engine crankshaft (not shown).First sprocket wheel 92 that it is operably connected is rotated or drives in the motion of the hub of being represented by arrow 91A 22, its motion or rotate represented by arrow 91B.Chain 88, also can be rotating band or other suitable drive mechanism, be connected with second sprocket wheel 96 in drivable mode, second sprocket wheel 96 then is connected to pump rotor group 170 from axle pump 124 in drivable mode, preferably is connected to a pair of be connected to or on the driving tang 173 that actuator 175 and driven member 170 form.The form that one of ordinary skill in the art would recognize that the actuator 175 of pump rotor group 170 and driven member 171 can be according to the type of institute"s use pump and/or model and different, and actuator 175 and driven member 171 preferably include gerotor gear train shown among Fig. 2 B.Therefore, when torque-converters hub 22 rotates with engine speed, and drive or when rotating first sprocket wheel 92, second sprocket wheel 96 (arrow 91C) is driven or is rotated by the action of chain drive-belt 88 by first sprocket wheel 92, arrow 91D has described This move.The rotational action of second sprocket wheel 96 drives or gives power in the actuator 175 from axle pump 124 rotor set 170, therefore supply with driven member 171 power continuously, thereby can be transmitted through the speed changer that is used as required with hydraulic fluid (not shown) source reliably from axle pump 124.

[0024] in described interchangeable embodiment, can be arranged in distance (part Fig. 1) from axle pump 124 from the axially compact of torque-converters 18 and dual input clutch device 26, but also may therefore need other external fluid connector and/or passage (not shown), be used for conveyor belt hydraulic fluid (not shown) with the operation of control from the axle pump.Equally, in the axially compact structure, may need a structure that supports separately to support dual input clutch device 26 (see figure 1)s.As indicated above, chain and chain sprocket driving device are preferred devices, one of ordinary skill in the art would recognize that other drive unit may be also suitable from axle pump 124 within the scope of the invention.For example, independent pump shaft is configurable reduces shaft space in the outside torque-converters turbine shaft of hollow.

After online video display, online PPT defense, and expert review of the competition for special prizes, the work of Professor Jun Zou and Academician Huayong Yang of the School of Mechanical Engineering, Wei Tang and other students’ work "customized self-healing flexible electro-hydraulic pump "Standing out among many participating teams and winning the special prize of the National Finals, this is also the first time that Zhejiang University has won this award in the competition.

In addition, the work "Zero Turning Radius Robot for Complex Underwater Environment" by Rui He and others won the national first prize, and the work of Huilai Li and others" work "Highly Efficient Driving Exoskeleton Robot" won the second national prize. The works of Difei Qian and others students’ "Research on the design, control and energy saving of redundant hybrid hydraulic heavy-duty manipulators", the works of Sun Haonan and other students "Magnetic crawling software robot design based on magnetic field-assisted photo-curing manufacturing process", and the works of Wang Yunjiang and other students "Modular drive serpentine arm for spinal cord minimally invasive surgery" won the national third prize.