Swash plate type axial plunger pump with oil supplement pump

A technology of axial plunger pump and charge pump, which is applied to components, pumps, and multi-cylinder pumps of elastic fluid pumping devices, and can solve the problems of difficult integration, light weight, and increased use of components in hydraulic systems. Number and other issues, to achieve the effect of hydraulic system integration and reduce the number of used

Inactive Publication Date: 2018-08-21
徐秀芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing closed hydraulic system, in order to avoid the pressure of the oil suction port of the main hydraulic pump (main pump) being too low, it is necessary to set up a separate charge pump to properly increase the pressure of the low-pressure pipeline to improve the working performance of the main pump, thus increasing the The number of components used in the hydraulic system is reduced, and it is difficult to achieve system integration and light weight

Method used

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  • Swash plate type axial plunger pump with oil supplement pump
  • Swash plate type axial plunger pump with oil supplement pump
  • Swash plate type axial plunger pump with oil supplement pump

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Embodiment

[0016] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a swash plate axial piston pump with its own charge pump includes swash plate 1, transmission shaft 2, sliding shoe 3, large plunger 4, small plunger 5, cylinder body 6, key 7, flow distribution Disc 8 (bearings, casings, return mechanisms and other parts that do not affect the expression of the present invention are omitted in the figure), is characterized in that: one end of the transmission shaft 2 is connected to the motor, and the other end passes through the swash plate 1 and the cylinder body 6 is connected by the key 7, and the cylinder body 6 is driven to rotate through the key 7. The cylinder body 6 is provided with a plunger hole, and the large plunger 4 is slidably fitted in the plunger hole of the cylinder body 6. Under the constraints of the swash plate 1 and the cylinder body 6, compound motions of circular and back and forth are performed, the rear part of the sliding shoe 3 is hingedly mou...

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Abstract

The invention discloses a swash plate type axial plunger pump with an oil supplement pump. In order to solve the problem that the oil supplement pump needs to be independently arranged in a closed type hydraulic system, a hollow small plunger is added into each plunger hole of the cylinder body of the original swash plate type axial plunger pump, meanwhile, the structure of a flow distribution plate is changed, and two independent branches of pressure oil can be output at the same time in one cylinder body, namely from the main pump and the oil supplement pump. Therefore, the oil supplement pump is prevented from being independently arranged in the closed type hydraulic system, the number of the used elements is reduced, and the hydraulic system is more integrated.

Description

technical field [0001] The invention relates to the technical field of hydraulic pumps, in particular to a swash plate axial piston pump for a hydraulic closed circuit. Background technique [0002] Due to its small energy loss and high degree of integration, the closed hydraulic system has been widely used in many industries. As the power component of the hydraulic system, the technology of the hydraulic pump has been constantly developing and becoming more and more mature. In the existing closed hydraulic system, in order to avoid the pressure of the oil suction port of the main hydraulic pump (main pump) being too low, it is necessary to set up a separate charge pump to properly increase the pressure of the low-pressure pipeline to improve the working performance of the main pump, thus increasing the The number of components used in the hydraulic system is limited, and it is difficult to realize the integration and light weight of the system. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): F04B1/22F04B53/00F04B53/10
CPCF04B1/22F04B1/2042F04B53/00
Inventor 徐秀芳
Owner 徐秀芳
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