Four-port port plate for torque balance and shock mitigation

A valve plate and window technology, applied in the field of hydraulic pumps, can solve the problems of increasing the size of the axial piston pump, complex structure of the pump body, poor oil suction and discharge, etc., and achieve the effect of improving variable performance

Inactive Publication Date: 2020-02-11
山西施沃浦电器设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above distribution plate structures are specially designed for asymmetric axial piston pumps, but because the transition area between the two independent oil suction and discharge distribution windows in series is located in the area where the plunger descends faster, it will produce a relatively fast flow rate. Large pressure shock, and will cause the resultant force point of the plunger shoe assembly on the swash plate of the axial piston pump to always be on one side of the swash plate shaft (such as figure 2 shown), and the resultant moment of the plunger shoe assembly on the swash plate of the axial piston pump is a one-way moment (such as image 3 As shown), the swash plate is in a static state; while for the parallel oil suction and discharge distribution window structure, since the area of ​​the oil suction and discharge port of the axial piston pump distribution plate is greatly reduced, there are problems such as poor oil suction and discharge; The type valve plate requires the plunger cylinder to be provided with two parallel plunger holes. This design makes the structure of the pump body more complicated and increases the size of the axial plunger pump.

Method used

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  • Four-port port plate for torque balance and shock mitigation
  • Four-port port plate for torque balance and shock mitigation
  • Four-port port plate for torque balance and shock mitigation

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as Figure 6 As shown, the four-distribution window distribution plate that can balance the torque and relieve the impact is a disc 7, and an oil suction window 1 and 3 oil discharge windows are set on the disc, among which, the 3 oil discharge windows include: row Ⅰ The oil window 2, the second oil discharge window 3 and the third oil discharge window 4; the oil suction window, the first oil discharge window, the second oil discharge window and the third oil discharge window are all waist-shaped through holes with circular arcs at both ends , and are sequentially distributed on the same circle with the disc center as the center, the index circle diameter and width of the oil suction window and oil discharge window are the same as the index circle diameter and width of the waist-shaped hole at the lower end of the plunger hole in the cylinder body, The spread angles of the oil suction window, the first oil discharge window, the second oil discharge window and the t...

Embodiment 2

[0038] Such as Figure 7 As shown, the four-distribution window distribution plate that can balance the torque and relieve the impact is a disc 7, and an oil suction window 1 and 3 oil discharge windows are set on the disc, among which, the 3 oil discharge windows include: row Ⅰ The oil window 2, the second oil discharge window 3 and the third oil discharge window 4; the oil suction window, the first oil discharge window, the second oil discharge window and the third oil discharge window are all waist-shaped through holes with circular arcs at both ends , and are sequentially distributed on the same circle with the disc center as the center, the index circle diameter and width of the oil suction window and oil discharge window are the same as the index circle diameter and width of the waist-shaped hole at the lower end of the plunger hole in the cylinder body, The spread angles of the oil suction window, the first oil discharge window, the second oil discharge window and the t...

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Abstract

The invention discloses a valve plate with four flow allocation windows and capable of balancing torque and easing impact. The valve plate is applicable to asymmetric axial plunger piston pumps. One oil absorbing window and three oil discharging windows are formed in a round plate, and under the circumstance of not changing a pump body structure, the generated instantaneous pressure impact can beeased when a plunger piston cavity is communicated with damping grooves formed in the front ends of the oil discharging windows; it is avoided that an imbalanced one-way torque effect is generated ona variable oblique plate by a plunger piston slipping boot assembly, and therefore the variable performance of an asymmetric axial plunger piston pump is improved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic pumps, and in particular relates to a four-distribution window distribution plate capable of balancing torque and alleviating impact. Background technique [0002] The hydraulic system (pump control system for short) in which the hydraulic pump directly controls the hydraulic actuator has the advantages of simple structure, small size and high efficiency, and has been popularized and applied in the fields of industrial equipment, walking machinery, and aerospace. The asymmetric axial piston pump is a new type of axial piston pump specially proposed to solve the unbalanced flow between the two chambers of the single piston rod hydraulic cylinder in the pump control system. [0003] The invention patent "Closed Electro-hydraulic Control System" (Patent No.: 200610012476.2) discloses a 3-port axial plunger pump, on which three oil suction and discharge distribution windows arranged in series or in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/2042F04B1/2014F04B53/00
CPCF04B1/2042F04B53/001
Inventor 黄家海贺伟郝惠敏李灵程
Owner 山西施沃浦电器设备有限公司
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