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Axial plunger variable pump

An axial column, variable pump technology, applied in piston pumps, pumps, multi-cylinder pumps, etc., can solve the problems of limited output adjustment range, friction pair wear, and high manufacturing requirements, and achieve the effect of large flow adjustment range

Inactive Publication Date: 2017-08-11
LUZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the swash plate axial piston variable pump widely used in the hydraulic system, because the maximum inclination angle of the swash plate is restricted by many factors, so the adjustment range of its output is greatly limited
At the same time, its "swash plate-slider" structure not only requires high manufacturing requirements, but also the corresponding friction pairs are prone to abnormal wear during use

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0014] From figure 1 , figure 2 , image 3 and Figure 4 It can be seen that the axial piston variable displacement pump of the embodiment of the present invention includes a cylinder liner (1), an oil inlet check valve (2), an oil outlet check valve (3), a sliding sleeve (4), and a plunger pin ( 5) Lead screw column (6), connecting rod (7), crankshaft (8), pump body (9), drain joint (10), eccentric wheel frame (11), eccentric wheel (12), plunger ( 13), motor (14), motor coupling (15), connecting rod bearing (16), rolling bearing (17), eccentric shaft (18), stepper motor coupling (19), stepper motor ( 20) Sliding bearing (21). The cylinder liner (1) is fixedly installed on the pump body (9), and the oil inlet check valve (2) and the oil outlet check valve (3) are installed on the top of the cylinder liner (1). The sliding sleeve (4) is installed in the cylinder liner (1). The sliding sleeve (4) and the cylinder liner (1) are in clearance fit. The sides of the sliding sleeve ...

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Abstract

The invention discloses an axial plunger variable pump. The axial plunger variable pump is characterized in that a sliding sleeve is mounted in a cylinder sleeve; a plunger is mounted in the sliding sleeve; holes are formed in the side surfaces of the sliding sleeve and the cylinder sleeve; the holes in the side surface of the sliding sleeve are accommodated in the holes in the side surface of the cylinder sleeve; a flange at the lower part of the sliding sleeve and an eccentric wheel frame are welded; an eccentric wheel is mounted in the eccentric wheel frame; a stepping motor is mounted on a pump body and is connected with an eccentric wheel shaft through a stepping motor coupling; a motor is mounted on the pump body and is connected with a crank shaft through a motor coupling; the crank shaft is supported on the pump body through a rolling bearing; the lower end of a connecting rod is assembled in a rod journal of the crank shaft through a connecting rod bearing shell; and the upper end of the connecting rod is in interference connection with a plunger pin. The axial plunger variable pump avoids the swash plate-sliding shoe structure and has a relatively large flow regulation range.

Description

Technical field [0001] The invention relates to an axial piston variable displacement pump. Background technique [0002] At present, the swash plate type axial plunger variable pump widely used in hydraulic systems, because the maximum inclination angle of the swash plate is restricted by many factors, the adjustment range of its output is greatly restricted. At the same time, its "swash plate-sliding shoe" structure not only requires high manufacturing requirements, but also the corresponding friction pair is prone to abnormal wear during use. Summary of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an axial plunger variable pump, which avoids the "swash plate-slip shoe" structure and has a larger flow adjustment range. [0004] The technical solution adopted by the present invention to solve its technical problems is: the designed axial piston variable pump includes a cylinder liner, an oil inlet che...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/14F04B7/02F04B13/00F04B17/03
CPCF04B1/14F04B7/0208F04B13/00F04B17/03
Inventor 唐学鑫王艳戎李刚
Owner LUZHOU VOCATIONAL & TECHN COLLEGE
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