Hydraulic variable control system and vehicle

A variable control and hydraulic technology, applied in the direction of fluid pressure actuators, servo motors, servo motor components, etc., can solve the problems of hydraulic system resource waste, idle pumps, increased costs, etc., to achieve the effect of saving quantity and reducing costs

Inactive Publication Date: 2015-11-25
TAIYUAN HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This requires multiple variable pumps with various control forms in the system, which puts forward greater requirements on the space of the system, and also increases the cost of procurement
Moreover, in such a system, the mechanisms of different control forms rarely work at the same time. When one of the mechanisms of the control form does not work, the corresponding pump will also be idle, which is a kind of hydraulic system. waste of resources

Method used

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  • Hydraulic variable control system and vehicle
  • Hydraulic variable control system and vehicle
  • Hydraulic variable control system and vehicle

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Embodiment Construction

[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0025] see figure 1 , the embodiment of the present invention discloses a hydraulic variable control system, including a variable pump 1 , a variable cylinder 2 , a pressure cut-off valve 3 , a load sensing valve 4 , a first valve 93 and a second valve 94 . By changing the switching states of the first valve 93 and the second valve 94, the hydraulic variable control system can be in different functional states.

[0026] The ...

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Abstract

The invention discloses a hydraulic variable control system. The hydraulic variable control system comprises a variable pump, a variable oil cylinder, a pressure shut-off valve and a load sensitive valve, wherein the variable pump is provided with an oil inlet and an oil outlet, a first valve and a second valve are connected to the load sensitive valve in parallel, and the second valve is connected with the oil outlet of the variable pump. According to the hydraulic variable control system, by changing the state of the first valve and the second valve, the hydraulic variable control system can be shifted among different control modes, the different control modes can be achieved through the same variable pump, the number of hydraulic elements is decreased, and the cost is reduced.

Description

technical field [0001] The invention relates to a hydraulic system, in particular to a hydraulic variable control system, and also relates to a vehicle with the hydraulic variable control system. Background technique [0002] In the current hydraulic variable control system, commonly used electric proportional variable control (EP control), constant power control (LR control), constant pressure control (DR control), remote pressure control (DRG, multi-stage pressure control), load Sensitive control (LS control), etc. [0003] In a complex hydraulic system, multiple variable control forms are often required. Most of the methods currently used are to realize multiple control forms through multiple pumps, that is, most of them use single-pump single-control systems. This requires multiple variable pumps with various control forms in the system, which puts forward greater requirements on the space of the system, and also increases the cost of procurement. Moreover, in such a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/00F15B13/02
CPCF15B11/00F15B13/02
Inventor 刘永平闫俊慧陈晓敏米勇丁兆义赵新泊刘政
Owner TAIYUAN HEAVY IND
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