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Working valve plate and multi-way valve

A technology of working valve and valve body, which is applied in the direction of lifting device, fluid pressure actuating device, servo motor assembly, etc. It can solve the problems of fork and shelf tilting forward, achieve hydraulic stability, improve fault tolerance rate, and avoid forward tilting Effect

Pending Publication Date: 2022-04-08
ZHEJIANG HAIHONG HYDRAULIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a working valve plate and a multi-way valve to solve the problem that the forklift rack is tilted forward due to the sudden flameout of the forklift

Method used

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  • Working valve plate and multi-way valve
  • Working valve plate and multi-way valve
  • Working valve plate and multi-way valve

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Embodiment Construction

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the structure or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limiting the application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the ...

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Abstract

The working valve plate comprises a valve body, a valve rod, a locking structure and a push rod structure, the locking structure is used for controlling connection and disconnection of a first oil distribution channel, the valve body is provided with a push rod moving cavity, and the push rod structure is movably arranged in the push rod moving cavity. The locking structure comprises a first one-way valve and a second one-way valve, when the first oil distribution channel communicates with the main oil inlet channel, on-off of the first oil distribution channel is controlled by the first one-way valve, and when the first oil distribution channel communicates with the main oil return channel, on-off of the second oil distribution channel is controlled by the second one-way valve. According to the working valve plate and the multi-way valve, when no pressure oil exists in the second oil distribution channel, the push rod structure cannot push the locking structure to open the first oil distribution channel, and the pressure oil cannot flow back to the main oil return channel through the first oil distribution channel, so that the hydraulic pressure borne by the fork goods shelf is kept stable, and the fork goods shelf is prevented from inclining forwards.

Description

technical field [0001] The present application relates to the technical field of engineering machinery hydraulic components, in particular to a working valve plate and a multi-way valve. Background technique [0002] As an industrial handling vehicle, forklifts are indispensable for the development of modern industry. Industrial handling vehicles are widely used in ports, stations, airports, freight yards, factory workshops, warehouses, distribution centers and distribution centers, etc., and forklifts can enter cabins, carriages and containers for loading, unloading and handling of palletized goods. , The essential equipment in container transportation. [0003] Usually, a forklift uses a multi-way valve as a power element to control the forward or backward tilt of the forklift in front of the forklift. Moreover, the multi-way valve usually includes an oil inlet valve section, an oil return valve section and a plurality of working valve sections. Usually, the working val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02B66F9/22
Inventor 张辉王奔李林德陈莉钟麒何贤剑
Owner ZHEJIANG HAIHONG HYDRAULIC TECH
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