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Hydraulic system

A technology of hydraulic system and hydraulic pump, applied in the field of hydraulic system, can solve the problems of rapid change in force and jitter of components, and achieve the effects of easy operation, simple structure and convenient maintenance.

Inactive Publication Date: 2016-03-09
王海博
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, linear or rotary actuators can be used to lift, telescopic, and rotate parts, but usually in order to lock the linear actuator and maintain its stable operation, a balance valve is provided to achieve stability and safety. However, when the parts acted by the piston rod of the hydraulic cylinder are in a static and critical state, due to the difference between the dynamic friction force and the maximum static friction force, the force of the acted parts changes sharply, which will lead to its shaking phenomenon

Method used

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Embodiment Construction

[0025]In view of the fact that the invention is susceptible to various modifications and alternative constructions, some relative embodiments illustrated are shown in the drawings and described in detail below.

[0026] It will be understood, however, that the invention is not limited to the particular embodiments illustrated, but on the contrary is intended to cover all modifications, alternative constructions and equivalent elements, which fall within the scope of the invention as defined by the claims.

[0027] The use of "such as", "etc", or "or" indicates non-exclusive alternatives, without limitation, unless otherwise stated. The use of "including" means "including but not limited to", unless otherwise stated.

[0028] figure 1 A schematic diagram of the hydraulic system of the present invention is shown. The hydraulic system of the present invention includes a hydraulic pump 100, an oil tank 200, a first linear actuator 300, a second linear actuator 400, a rotary actua...

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Abstract

The invention relates to a hydraulic system. The hydraulic system comprises two straight line executing mechanisms (300, 400) and a rotary executing mechanism (500); pressure compensation valves (317, 327) of the two straight line executing mechanisms respectively receive the compensation of a cylinder-to-cylinder load comparative mechanism (601), and a hydraulic pump adjusting mechanism (700) receives the compensation of a pump load comparative mechanism (602) so as to adjust the hydraulic pump (1001), wherein the pump load comparative mechanism is used for comparing the loads of the two straight line executing mechanisms with that of the rotary executing mechanism, and two straight line executing mechanisms are adjusted through hydraulic control locking valves (318, 428); and thereby, the pressure compensation of the straight line executing mechanisms is realized while the chattering phenomenon of straight line executing elements (319, 429) are retarded. The hydraulic system is simple in structure, convenient to maintain, and easy to operate; the hydraulic system can perform the pressure compensation at work while also slow down the chattering phenomenon of the executing elements under the critical state.

Description

technical field [0001] The present invention relates to a hydraulic system, more particularly, to a hydraulic system for mobile engineering machinery. Background technique [0002] In existing mobile construction machinery, such as hydraulic excavators and cranes, the power converted by the initial energy converter (such as a diesel engine or a diesel engine) is usually transmitted to each linear actuator of the working equipment through a hydraulic drive and control unit (hydraulic cylinder) or rotary type actuator (hydraulic motor), the pump driven by the primary energy converter delivers hydraulic oil to the valve block, and the valve block distributes it to the actuator to operate the load. [0003] In these mobile engineering machines, a single hydraulic pump is often required to drive multiple linear actuators or rotary actuators to operate, and to drive the rotary actuators to move. [0004] In addition, linear or rotary actuators can be used to lift, extend, rotate,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/08
CPCF15B11/08
Inventor 麦云飞王海博刘磊然
Owner 王海博