Digital type hydraulic transformer

A hydraulic transformer, a digital technology, applied in the field of hydraulic devices, can solve problems such as structural limitations and limited range of transformation ratio, and achieve the effects of small energy loss, large transformation ratio range, and flexible configuration

Active Publication Date: 2017-07-18
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of transformer has a compact structure and high efficiency, but due to structural limitations, the ran

Method used

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  • Digital type hydraulic transformer
  • Digital type hydraulic transformer
  • Digital type hydraulic transformer

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Embodiment

[0021] Such as Figure 4 Shown is a preferred embodiment of the present invention, a digital hydraulic transformer, the main body of which includes a flow diversion / collection system composed of four gear pump / motor units 105 and four two-position three-way electromagnetic switch valves The inlet control valve group and the outlet control valve group composed of four two-position three-way electromagnetic switch valves; the quadruple gear pump / motor 105 includes the first gear pump / motor unit M 1 , second gear pump / motor unit M 2 , the third gear pump / motor unit M 3 and fourth gear pump / motor unit M 4 , the driving gear shafts of adjacent gear pump / motor units in the quadruple gear pump / motor 105 are connected to each other with a spline bushing, so that the four gear pump / motor units 105 rotate synchronously; the first gear pump / motor Unit M 1 , the second gear pump / motor unit M 2 , the third gear pump / motor unit M 3 and fourth gear pump / motor unit M 4 The displacement...

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PUM

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Abstract

The invention discloses a digital type hydraulic transformer. A main body of the transformer comprises a flow shunting/collecting system comprising n gear pump/motor units and two control valve groups; each control valve group comprises n two-position three-way electromagnetic switch valves; the n gear pump/motor units are fixed side by side through manifold screws and fastening nuts, the displacements of the n gear pump/motor units are sequentially configured as per the law of indexes of 2, and n is an integer larger than 2; the state of the n two-position three-way electromagnetic switch valves of the inlet control valve group corresponds to an n-bit binary number Ni; the state of the n two-position three-way electromagnetic switch valves of the outlet control valve group corresponds to an n-bit binary number No; and pressure and flow conversion between an external load oil port and an external oil source port is realized through binary digital control on the working state of the inlet control valve group and the working state of the outlet control valve group. The transformer is compact in structure, the transformer ratio is convenient and labor-saving to adjust and is large in range, external leakage is avoided, and the energy loss is low.

Description

technical field [0001] The invention relates to a hydraulic device, in particular to a digital hydraulic transformer, which is used in a hydraulic system to control the pressure and flow without throttling loss for variable load actuators. Background technique [0002] A hydraulic transformer is a hydraulic component that can realize pressure conversion in hydraulic transmission. Energy can be obtained from the hydraulic constant pressure network system without throttling loss, and the motion control of the actuator can be performed. Existing hydraulic transformers can be divided into three types: hydraulic cylinder hydraulic transformers with constant transformation ratio, hydraulic motor+pump hydraulic transformers with adjustable transformation ratio, and plunger pump / motor composite structure hydraulic transformers. The first type uses two single-rod hydraulic cylinders and their piston rods are rigidly connected together. Since the effective area of ​​the pistons on bo...

Claims

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Application Information

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IPC IPC(8): F15B3/00
CPCF15B3/00
Inventor 刘涛李伟建张鑫宇
Owner YANSHAN UNIV
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