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Straight shaft plunger pump with limiting arc-shaped slide rail balance

A plunger pump and slide rail technology, which is applied in the field of limit arc slide rail swing plate straight axis plunger pump, can solve the problem of reducing the noise of the whole pump and the service life of the whole pump, increasing the overturning moment of the rotor and the swing plate, and affecting the operation of the rotor Stability and other issues to achieve the effect of reducing vibration and noise, overcoming lateral movement, unique structural features and functions

Active Publication Date: 2011-09-21
BEIJING HUADE HYDRAULIC INDAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing straight-axis plunger pump, the slideway of the variable swing plate is a plane arc slideway. When the pump is variable, the slide block 21 placed in the variable piston is subjected to the lateral force, so that the swing plate moves away from the The displacement of the direction of the variable piston causes the lateral movement of the wobble plate, which is easy to generate mechanical vibration and causes abnormal wear of the wobble plate slideway
At the same time, it also changes the motion state of the plunger shoe on the contact surface of the wobble plate, increases the overturning moment of the rotor and wobble plate, affects the stability of the rotor operation, and has an adverse effect on reducing the noise of the whole pump and the service life of the whole pump

Method used

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  • Straight shaft plunger pump with limiting arc-shaped slide rail balance
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  • Straight shaft plunger pump with limiting arc-shaped slide rail balance

Examples

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Effect test

Embodiment 1

[0031] Figure 4Shown is the best embodiment of the present invention. In this embodiment, the upper surface of the lateral limit arc slide rail 170 is provided with an arc groove 171 along the arc direction, and the lateral limit slide rail 140 The upper surface is provided with a circular arc convex rib 141 that is slidingly matched with it; or the upper surface of the horizontal limiting arc slide rail is provided with an arc convex rib along the arc direction, and the horizontal limiting slideway is provided with a corresponding Slip fit arc groove.

[0032] The arc convex edge along the arc direction contains three meanings, one is a convex edge; second, the arc along the arc line refers to the arc line along the length direction of the arc slide rail, that is, the convex edge The length direction of the arc-shaped slide rail is consistent with the length direction of the arc-shaped slide rail, and the two do not intersect, and the angle is zero; thirdly, the top of the ...

Embodiment 2

[0037] Figure 5 Shown is a structural schematic view of another preferred embodiment of the limiting arc-shaped slide rail and the slideway on the wobble plate of the present invention. In this embodiment, the upper surface of the transverse limiting arc slide rail 170' is provided with a V-shaped groove 171' along the arc direction, and the transverse limiting slideway 140' is provided with a The V-shaped rib 141'; or the upper surface of the transverse limit arc slide rail is provided with a V-shaped rib along the arc direction, and the transverse limit slide is provided with a V-shaped concave groove.

[0038] This embodiment also has the various functional characteristics of Embodiment 1, and has better machining performance compared with Embodiment 1, because the circular arc groove or circular arc convex edge needs to be processed with a numerical control machine tool, and the circular V Grooves or V-shaped ribs can be completed with ordinary machine tools. It has an...

Embodiment 3

[0040] Figure 6 Shown is another embodiment of the limiting arc-shaped sliding rail and limiting arc-shaped chute of the present invention. In this embodiment, the upper surface of the transverse limiting arc-shaped sliding rail 170" is provided with The T-shaped groove 171" in the linear direction, and the T-shaped rib 141" that slides with it is provided on the lateral limit slideway 140"; or the upper surface of the transverse limit arc slide rail is provided with a T-shaped ribs in the arc direction, and T-shaped grooves slidingly matched with the transverse limiting slideway.

[0041] The advantage of this embodiment is that the lateral limit is strict, but there is no automatic centering feature, and the difficulty of processing is between the first and second embodiments.

[0042] In each of the above embodiments, the slide rail is a copper alloy slide rail, or a powder metallurgy oil-impregnated slide rail.

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Abstract

The invention relates to a straight shaft plunger pump, in particular to a straight shaft plunger pump with a limiting arc-shaped slide rail balance. The straight shaft plunger pump comprises a pump body, a cylinder body, a plunger, a balance, two planar arc-shaped slide rails and a balance angle adjusting device, wherein the bottom of the balance is provided with two slide tracks; the two planerarc-shaped slide rails are arranged at the bottom of the pump body in a sliding mode with the slide tracks of the balance, and are used for supporting the balance; and the slide rails on at least oneside are transverse limiting arc-shaped slide rails and the slide tracks on the balance are transverse limiting arc-shaped slide tracks. The transverse limiting arc-shaped slide rails and slide tracks increase the side force of a contact surface, reduce the transverse play of the balance, improve the stress state of the balance, improve the smoothness of a rotor, lighten vibration and fulfill theaim of reducing noises of the whole pump. Besides, the assembly of the whole pump is more simplified, and the assembly accuracy is also improved.

Description

technical field [0001] The invention relates to a straight-shaft plunger pump, in particular to a straight-shaft plunger pump with a limit-arc slide rail swing plate. Background technique [0002] The structure of the existing direct shaft plunger pump is as follows: figure 1 As shown, it mainly includes a pump body 1, a drive spindle 2, a cylinder body 3, a flow plate 4, a plunger 5, a swing plate 6, a slide rail 7, an upper cover 8, a swing plate angle adjustment device 9 and a sliding shoe 10. Wherein the cylinder body 3 is fixed with the drive spindle 2, and the cylinder body 3 is provided with a plurality of cylinder holes 11 uniformly distributed on a circle with a certain radius centered on the axis of the drive spindle 2, and the plunger 5 is slidingly arranged in the cylinder hole 11, and slides along the upper surface of the swing plate 6 through the sliding shoe 10. The cylinder hole 11 communicates with the two semi-arc oil distribution holes 13 and 14 on the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/22
Inventor 杨广文
Owner BEIJING HUADE HYDRAULIC INDAL GROUP
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