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A sliding shoe pair preloaded by electromagnetic force for an axial piston pump or motor

An axial plunger pump, electromagnetic force technology, applied in the direction of the plunger, the components of the pumping device for elastic fluid, the piston, etc., can solve the problems of mutual interference, complex design of the return plate, etc., to avoid failure and avoid The effect of mutual influence and convenient adjustment

Active Publication Date: 2017-08-08
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The balanced multi-row axial piston pump is a new type of axial piston pump. Its swash plate has multiple slopes, which makes the design of the return plate more complicated and easily interferes with other parts.

Method used

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  • A sliding shoe pair preloaded by electromagnetic force for an axial piston pump or motor
  • A sliding shoe pair preloaded by electromagnetic force for an axial piston pump or motor
  • A sliding shoe pair preloaded by electromagnetic force for an axial piston pump or motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] combine figure 1 : A sliding shoe pair for an axial plunger pump or motor preloaded by electromagnetic force, including a plunger 1 and a swash plate 2, one end of the plunger 1 is in contact with the surface of the swash plate 2 through a sliding shoe 3; the swash plate 2 A boss 4 is arranged on the back, and a coil 5 is wound on the boss 4, and the coil 5 is electrically connected to an external AC power supply.

[0026] The magnitude of the electromagnetic force can be changed by changing the magnitude of the current and voltage in the coil 5, so as to realize the control of the thickness of the oil film on the auxiliary shoe.

[0027] When the axial piston pump / motor is working, the coil 5 is first supplied with alternating current, so that the coil 5 generates electromagnetic force by magnetic induction, and the pair of sliding shoes is tightly adsorbed on the annular slope of the swash plate 2. At this time, the adsorption The magnitude of the force can be determ...

Embodiment 2

[0034] combine Figure 4 : A sliding shoe pair for an axial plunger pump or motor preloaded by electromagnetic force, including a plunger 1 and a swash plate 2, one end of the plunger 1 is in contact with the surface of the swash plate 2 through a sliding shoe 3; the swash plate 2 Bosses 4 are arranged on the back, coils 5 are wound on the bosses 4, and the coils 5 are electrically connected to an external AC power supply; the number of bosses 4 and coils 5 are two, distributed along the inclination direction of the swash plate 2.

[0035] Considering the different effects of high and low pressure in the plunger chamber of the plunger pump or motor on the static pressure support effect of the slipper pair, a boss 4 can be distributed on the swash plate 2 according to the high and low pressure regions of the axial plunger pump / motor 1. Coil 5, and different currents are passed into the two coils 5, thereby generating different electromagnetic forces, matching the working condit...

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PUM

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Abstract

The invention discloses a pair of sliding shoes for axial plunger pump or motor pre-tightened by electromagnetic force, comprising a plunger and a swash plate, one end of the plunger is in contact with the surface of the swash plate through the sliding shoe; the swash plate The back side is provided with a boss, and a coil is wound on the boss, and the coil is electrically connected with an external AC power supply. The invention changes the way that the traditional axial piston pump / motor uses spring force to press the return plate and the sliding shoe. When the pump / motor is not working, the electromagnetic force is used to firmly absorb the sliding shoe on the inclined surface of the swash plate. When the axial piston pump / motor is working, the interaction between the electromagnetic force, the hydraulic pressure and the hydraulic pressure depressurized through the orifice is used to realize the static pressure support.

Description

technical field [0001] The invention relates to the technical field of axial plunger pumps and motors, and in particular relates to a pair of sliding shoes pre-tightened by electromagnetic force for axial plunger pumps or motors. Background technique [0002] Axial piston pumps / motors are indispensable power / executive components in hydraulic systems. Their common characteristics are high technical content, high processing quality requirements for parts, and they all bear large flow and pressure. Their structures are complex. The degree and manufacturing cost are also at the top of all kinds of hydraulic pumps / motors. [0003] The sliding shoe pair is one of the three key friction pairs of the axial piston pump / motor. The sliding shoe pair is the intermediate link connecting the swash plate and the plunger. In addition to bearing the axial force from the high-pressure oil in the plunger chamber , It also bears the centrifugal moment caused by the circumferential movement of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/00F04B53/14F03C1/06F03C1/28
Inventor 邓海顺黄坤王传礼骆支宝黄然郑露
Owner ANHUI UNIV OF SCI & TECH