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Electric proportional variable axial plunger pump

A technology of axial plunger pump and plunger pump, which is applied in the direction of pumps, multi-cylinder pumps, liquid variable displacement machines, etc., can solve the problem that the output displacement cannot be changed, achieve good reliability, reduce impact, and simple control Effect

Active Publication Date: 2013-09-11
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

As a result, the one-way hydraulic variable axial piston pump cannot change its output displacement during the working process

Method used

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  • Electric proportional variable axial plunger pump
  • Electric proportional variable axial plunger pump
  • Electric proportional variable axial plunger pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Embodiment: As shown in the figure, an electronically controlled proportional variable axial plunger pump includes a plunger pump body and a variable mechanism arranged on one side of the plunger pump body. The plunger pump body includes a pump body 1 and a pump body 1 The variable plate 2 in the body 1, the variable mechanism includes the variable piston 3 connected with the variable plate 2 and the first oil chamber 31 and the second oil chamber 32 formed at both ends of the variable piston 3, the variable piston 3 acts through the variable slider 33 On the variable plate 2, a hydraulic control system is also provided outside the pump body 1. The hydraulic control system includes a controller 4, a proportional directional valve 5 connected to the controller 4 and used to control the flow of oil, a transition plate 6 and a valve for monitoring the variable. The detection mechanism for the position of the piston 3, the transition plate 6 is installed outside the pump bod...

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Abstract

The invention discloses an electric proportional variable axial plunger pump comprising a plunger pump body and a variable mechanism arranged on one side of the plunger pump body. The plunger pump body comprises a pump body and a variable tray arranged inside the pump body. The variable mechanism comprises a variable piston connected with the variable tray and a first oil chamber and a second chamber which are formed at two ends of the variable plunger. A hydraulic control system is further arranged on the outer side of the pump body, and comprises a controller, a proportional direction value, a transition plate and a detection mechanism, wherein the proportional direction value is connected with the controller and used for controlling flow of oil, the detection mechanism is used for detecting the position of the variable piston, the transition plate provided with two oil outlets is mounted on the outer side of the pump body. The two oil outlets are communicated with the first and second oil chambers respectively, the proportional direction valve is mounted on the transition plate, and the detection mechanism is connected with the controller. The electric proportional variable axial plunger pump has the advantages of simplicity in control, high reliability and repeat accuracy, and emission can be regulated in real time during operation.

Description

technical field [0001] The invention relates to an axial plunger pump, in particular to an electronically controlled proportional variable axial plunger pump. Background technique [0002] In order to meet the higher requirements of the engineering system on transmission and control characteristics, electro-hydraulic proportional control technology has become the most vigorous branch in the field of fluid transmission and control that has gradually developed since the 1960s and 1970s. At present, the use of electro-hydraulic proportional hydraulic technology to design modern hydraulic equipment has become an indispensable and important means, and has received special attention from relevant industries and technical circles. The hydraulic pump is a power component that provides a certain flow and pressure medium for the hydraulic system, and it is the heart of the entire hydraulic system. Its performance directly affects the performance of the entire hydraulic system. The e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/26F04B1/12
Inventor 吴平施怀均王振宇孙泓源马崇南
Owner 宁波恒力液压股份有限公司
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