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Working valve plate and multi-way valve

A technology for working valves and valve bodies, which is applied in lifting devices, fluid pressure actuating devices, servo motor components, etc. It can solve problems such as fork racks tilting forward, achieve hydraulic stability, avoid forward tilting, and improve fault tolerance. 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, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device 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 ...

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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 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, the pressure oil cannot flow back to the main oil return channel through the first oil distribution channel, then the hydraulic pressure borne by the fork goods shelf is kept stable, and the fork goods shelf is prevented from inclining forwards. The valve body is provided with an assembly cavity, the assembly cavity communicates with the first oil distribution channel, and the locking structure is arranged in the assembly cavity through an opening of the assembly cavity. By means of the arrangement, the assembling difficulty of the locking structure is greatly reduced, and then the manufacturing cost of the working valve plate and the multi-way valve is reduced.

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 骆坚翔王军阮榆峰文小凤何贤剑王奔
Owner ZHEJIANG HAIHONG HYDRAULIC TECH
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