Electromagnetic switch hydraulic multitandem valve control device

A control device and electromagnetic switch technology, applied in valve devices, valve operation/release devices, multi-way valves, etc., can solve the problem that the driving current of the switch electromagnet is easily disturbed, the electromagnetic performance of the electromagnet cannot be reasonably utilized, and the electromagnetic performance of the switch can be affected. Iron service life and other issues, to achieve the effect of reducing temperature, improving work reliability, and improving service life
CN101290073AActive Publication Date: 2008-10-22JINGSU YUEDA SPECIAL VEHICLE CO LTD +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
JINGSU YUEDA SPECIAL VEHICLE CO LTD
Publication Date
2008-10-22

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Abstract

The invention relates an electromagnetic switch hydraulic multi-way valve control device based on the segmented current negative feedback principle, belonging to the hydraulic pressure control electric circuit field. The device mainly comprises a segmented electric current generating circuit, an electric current regulating circuit, a pulse-width modulation electric circuit, a power driving circuit and an electric current negative feedback electric circuit. Compared with the prior art, the invention adopts segmented current control which eliminates easy jam and lock phenomenon when an electromagnetic valve is just opened and guarantees the opening reliability; the invention makes power amplification electric circuit work in on-off state all the time by pulse-width modulating, which decreases heat productivity of electric circuit, is favorable for saving energy and enhances working stability; and the invention, by means of current negative feedback, eliminates oscillation of a valve core which effectively decreases the temperature of system oil, realizes energy conservation and increases operational stability of multi-way valves.
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Description

technical field

[0001] The invention relates to a control device for an electromagnetic switch hydraulic valve, in particular to an electromagnetic switch hydraulic multi-way valve control device based on the principle of segmental current negative feedback, and belongs to the technical field of hydraulic control circuits. Background technique

[0002] The electromagnetic switch hydraulic multi-way valve is the basic component of hydraulic transmission and control, and is widely used in various walking hydraulic control systems (such as various construction machinery, engineering vehicles, etc.). In the traditional electromagnetic switch hydraulic multi-way valve, each electromagnetic switch valve, especially the single electromagnetic switch valve, has the following problems for a long time due to the use of the switch circuit as the control device

[0003] 1. Poor working reliability and stability;

[0004] Due to the influence of manufacturing and processing precision an...

Claims

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