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An Unloading Independent Variable Radial Piston Pump

A plunger pump and radial column technology, which is applied in the field of unloading independent variable radial plunger pumps, can solve the problems of increasing the calorific value of the pump body and reducing the energy conversion efficiency of the hydraulic pump, so as to reduce the volume and improve the energy conversion Efficiency and reliability, the effect of manufacturing process requirements

Active Publication Date: 2019-01-15
LIUZHOU VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the plunger type independent variable hydraulic pump can output the highest pressure, it is widely used in engineering, construction machinery and other equipment, but in the existing plunger type independent variable pump, whether it is axial or radial, the structural There are sliding friction pairs with large forces and large areas such as oil distribution plates and sliding shoes. These sliding friction pairs not only reduce the energy conversion efficiency of the hydraulic pump and increase the heat generated by the pump body, but also limit the dynamic gap seal of the flow distribution mechanism. The further increase in the working pressure of the hydraulic pump also limits the development of the entire hydraulic system in the direction of small and light weight

Method used

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  • An Unloading Independent Variable Radial Piston Pump

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Embodiment Construction

[0018] An unloading independent variable radial plunger pump, comprising a plunger pump, an eccentric wheel 5, a reversing valve cam 8, a reversing valve, a helical swing oil cylinder 10 and an oil storage tank 11, and the plunger pump includes a plunger pump I13 and plunger pump II3, the reversing valve includes reversing valve I12 and reversing valve II9, and the eccentric wheel 5 and the swing cylinder body 101 of the helical swing cylinder 10 are respectively fixed on the same On the pump shaft 6, the reversing valve cam 8 is connected to the swing cylinder shaft 103 of the helical swing cylinder 10, and the eccentric wheel 5 is coaxial with the reversing valve cam 8 and can rotate relatively; the plunger pump I13 and plunger pump II3 Both are driven and connected with the eccentric wheel 5, the reversing valve I12 and the reversing valve II9 are both driven and connected with the reversing valve cam 8, the plunger pump I13 is connected with the oil circuit of the reversing...

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Abstract

The invention relates to an unloading type independent variable radial plunger pump. The unloading type independent variable radial plunger pump comprises plunger pumps, an eccentric wheel, a reversing valve cam, reversing valves, a spiral swing cylinder and an oil storage tank, wherein both the eccentric wheel and the reversing valve cam are arranged on the same pump shaft which is connected to a motor, both a first plunger pump and a second plunger pump are connected to the eccentric wheel in a driven mode, both a first reversing valve and a second reversing valve are connected to the reversing valve cam in a driven mode, the first plunger pump is connected to the first reversing valve in an oil-way mode, the second plunger pump is connected to the second reversing valve in an oil-way mode, the first plunger pump is connected to a hydraulic system and the spiral swing cylinder in an oil-way mode through a one-way valve, the second plunger pump is connected to the hydraulic system and the spiral swing cylinder in an oil-way mode through the one-way valve, and a swing cylinder rotating shaft in the spiral swing cylinder is connected to the reversing valve cam. According to the unloading type independent variable radial plunger pump, a cam is adopted to control the reversing valve to unload part of displacement of the working operation of the plunger pumps, and effective oil extraction working operation of the plunger pumps and change of displacement of an oil pump are achieved.

Description

technical field [0001] The invention relates to the hydraulic technical field of mechanical engineering, in particular to an unloading independent variable radial piston pump. Background technique [0002] In the field of hydraulics in mechanical engineering, self-variable hydraulic pumps are required to power hydraulic systems with changing flow requirements. Because the plunger type independent variable hydraulic pump can output the highest pressure, it is widely used in engineering, construction machinery and other equipment, but in the existing plunger type independent variable pump, whether it is axial or radial, the structural There are sliding friction pairs with large forces and large areas such as oil distribution plates and sliding shoes. These sliding friction pairs not only reduce the energy conversion efficiency of the hydraulic pump and increase the heat generated by the pump body, but also limit the dynamic gap seal of the flow distribution mechanism. The fur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B9/04F04B49/22
CPCF04B9/042F04B9/045F04B49/22
Inventor 覃日强刘光浩覃轶毅杨南林若森高茂涛
Owner LIUZHOU VOCATIONAL & TECHN COLLEGE
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