Unidirectional hydraulic axial variable displacement plunger pump

An axial plunger pump and plunger pump technology, which is applied to liquid variable capacity machinery, pumps, multi-cylinder pumps, etc., can solve the problems of low utilization rate of motive power, unsatisfactory energy saving effect, and poor system reliability. To achieve the effect of simple structure design, fast action response and good reliability

Inactive Publication Date: 2008-12-10
宁波恒力液压股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme has the disadvantages of low power utilization rate of the prime mover, cumbersome control, poor system reliability, and unsatisfactory energy-saving effect.

Method used

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  • Unidirectional hydraulic axial variable displacement plunger pump
  • Unidirectional hydraulic axial variable displacement plunger pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Embodiment: Referring to Fig. 1 and Fig. 2, the one-way hydraulic variable axial piston pump in this embodiment includes a plunger pump body and a variable displacement mechanism arranged on one side of the plunger pump body.

[0028] The main body of the plunger pump includes a pump body 3, a pump cover 18, a variable plate 6, a return plate 13, a transmission shaft 10, a cylinder assembly 15, a plunger shoe mechanism 14, a slide plate 7, an oil distribution plate 16, and a ball bearing 12 .

[0029] The pump cover 18 is assembled on the pump body 3 to form an airtight space with the pump body 3. The variable plate 6 is arranged in the pump body 3 at an inclined angle with the drive shaft 10. The return disk 13 is arranged on the slide plate 7, and the slide plate 7 is fixed on the variable disk 6,

[0030] The transmission shaft 10 is rotatably installed in the pump body 3 through bearings, specifically through the full-rail end cylindrical roller bearing 17 without ...

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PUM

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Abstract

The invention relates to a one-way hydraulic variable axial piston pump which comprises a piston pump and a variable mechanism arranged on one side of the piston pump; the piston pump is characterized in that the variable mechanism comprises a first flange (21), a second flange (23), a variable piston (5), a reset spring (22), a transitional plate (2) and an electromagnetic directional valve (1). Both ends of the variable piston (5) are sealed and connected with the first flange (21) and the second flange (23), to respectively form a first oil reservoir (A) and a second oil reservoir (B), and the bottom of the variable piston (5) is connected with a variable disk (6) in the piston pump; the transitional plate (2) is arranged on the outer side of the pump (3) of the piston pump. Compared with the prior art, the piston pump has the advantages that the electromagnetic directional valve is used to adjust and control the flowing direction of the oil so as to adjust the displacement of the piston pump; control is simple, the motion is relatively quick, the reliability is good, and the motion requirements of a glass steel hydraulic press are met.

Description

technical field [0001] The invention relates to a one-way hydraulic variable axial plunger pump. Background technique [0002] Since the 1970s, in order to save energy, the foreign hydraulic transmission control system has changed from the traditional valve-controlled hydraulic system to the hydraulic system controlled by the pump displacement. In the hydraulic system in the future, the new variable axial piston pump will be widely used. , played an important role in the development of the national economy. For details, please refer to the Chinese utility model patent: ZL200320123474.2, which discloses an "internal control type electro-hydraulic proportional variable axial piston pump" (authorized announcement number: CN2667194Y). The variable part of the patent adopts the current change control pilot of the proportional electromagnet The movement of the valve makes the oil in the pressure reducing valve enter the upper and lower chambers of the variable piston, so that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/12F04B1/26F04B1/32
Inventor 吴平
Owner 宁波恒力液压股份有限公司
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