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Hydraulic system, hydraulic equipment and flow control method of hydraulic system

A technology of hydraulic system and hydraulic pump, applied in the direction of fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc., can solve the problems of large loss and slow response, reduce operating costs, reduce power The effect of improving the efficiency of the hydraulic system

Pending Publication Date: 2022-04-12
HUAQIAO UNIVERSITY
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Problems solved by technology

[0006] The invention discloses a hydraulic system, equipment and flow control method thereof, aiming to solve the problems of slow response and large loss in the existing flow control system

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  • Hydraulic system, hydraulic equipment and flow control method of hydraulic system
  • Hydraulic system, hydraulic equipment and flow control method of hydraulic system

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implement...

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Abstract

The invention provides a hydraulic system, equipment and a flow control method thereof. The hydraulic system comprises a controller, a pressure detection unit, an execution oil cylinder, a reversing valve, a first oil way, a second oil way, a driving unit and a hydraulic pump. Wherein the input end of the hydraulic pump is used for being connected with a hydraulic oil tank, the hydraulic pump is connected with the input end of the reversing valve through the first oil way, the output end of the reversing valve is connected with the input end of the second oil way, the first output end of the second oil way is connected with the executing oil cylinder, and the second output end of the second oil way is connected with the executing oil cylinder. The second output end of the second oil way is connected to the hydraulic oil tank, the driving unit is connected with the hydraulic pump shaft, and the pressure detection unit is arranged at the second output end of the second oil way. The pressure detection unit is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the driving unit. The problems that an existing flow control system is slow in response and large in loss are solved.

Description

technical field [0001] The invention relates to the field of hydraulic systems, in particular to a hydraulic system, equipment and a flow control method thereof. Background technique [0002] For traditional construction machinery, the power system used is the internal combustion engine drive system. From the analysis of the universal characteristic curve of the internal combustion engine, it can be known that in order to make the internal combustion engine work in a high-efficiency range, there are obvious requirements for its torque and speed. Taking common hydraulic excavators as an example, in order to achieve high-efficiency operation of diesel engines, diesel-powered excavators usually adopt a control method based on working conditions. The working conditions are divided into light load, medium load and heavy load, corresponding to three conditions. The speed of the diesel engine limits the speed of the hydraulic pump to this speed. When the hydraulic system complete...

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Application Information

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IPC IPC(8): F15B11/08F15B13/04F15B21/02
Inventor 林添良武凯缪骋林元正陈其怀付胜杰任好玲李钟慎郭桐方燕飞
Owner HUAQIAO UNIVERSITY
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