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Electro-hydraulic reversing valve

A hydraulic reversing valve, electric technology, applied in the field of hydraulic reversing valve, can solve the problems of inability to effectively realize the rising and falling speed, difficult to control cleanliness, valve function failure, etc., to achieve compact structure, easy maintenance, opening and closing. quick effect

Active Publication Date: 2014-09-17
WUHAN DONGJIANG FEITE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the hydraulic control (reversing) valves commonly used in the market in our country are pure air control, manual control or electromagnetic control. Complicated, high cost, complex piping during installation
Since the cleanliness of the hydraulic system in the domestic market is difficult to control, the function of the valve often fails due to the stuck valve core. Therefore, it is necessary to make improvements on the basis of the existing technology

Method used

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Examples

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Embodiment Construction

[0015] figure 1 Shown is one of the embodiments of the present invention, which mainly includes a valve body 4, a valve core 3, a relief valve assembly 2 and a motor 7, the motor 7 adopts a servo motor, and the valve core 3 is installed in the shaft hole of the valve body 4 Inside, the two ends of the valve body 4 are installed with the housing 8 and the end cover 1 respectively, and the motor 7 is fixed on the housing 8 . The connection between the motor 7 and the valve core 3 adopts a floating screw sleeve structure, that is, one end of the valve core 3 is provided with a screw sleeve 12, and the outside of the screw sleeve 12 is a fixed sleeve 13, and the screw sleeve 12 is floatingly arranged in the fixed sleeve 13. The structure enables automatic centering between the spool 3 and the motor shaft, avoiding the stuck phenomenon caused by the spool 3 not concentric with the motor shaft. The motor shaft and the coupling shaft 6 are fixedly connected with the positioning pin ...

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Abstract

The invention relates to an electro-hydraulic reversing valve, which comprises a valve body, a spool, a relief valve assembly and a motor. The electro-hydraulic reversing valve is characterized in that the motor is connected with a screw barrel at one end of the spool through a coupling shaft in a threaded manner, the spool axially moves in the valve body, a micro-switch arranged in a casing of the valve is used for acquiring signals to correct the initial position of the spool automatically and control displacement of the spool, and the motor drives the spool to move to control on and off of an oil circuit so as to ascend and descend an actuating element on the lifting mechanism. The electro-hydraulic reversing valve has the advantages of quick switch-on and switch-off, high reliability, convenience in maintenance, simplicity in pipeline arrangement, continuity and adjustability of lifting speed and capability of being controlled remotely.

Description

technical field [0001] The invention relates to a valve, in particular to a hydraulic reversing valve suitable for controlling the lifting and lowering of actuators on lifting mechanisms of various dump trucks and elevators. Background technique [0002] At present, most of the hydraulic control (reversing) valves commonly used in the market in our country are pure air control, manual control or electromagnetic control. It is complicated, the cost is high, and the pipeline is complicated during installation. Because the cleanliness of the hydraulic system in the domestic market is difficult to be controlled, and the valve core is often stuck, causing the function of the valve to fail. Therefore, it is necessary to make improvements on the basis of the existing technology. Contents of the invention [0003] The purpose of the present invention is to solve the defects in the prior art, aiming at the needs of controlling the lifting and lowering of the actuators on the lifti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 张在波肖喜枝张明荣张俊朱雪松
Owner WUHAN DONGJIANG FEITE SCI & TECH CO LTD