Lifting joint descending function structure

By designing the lifting functional structure in the agricultural machinery vehicle control system, using the sliding cavity and the main valve core integrated with the conduction mechanism, multiple load movement control is achieved, which solves the problems of complexity and prone to failure of the existing system, and improves the simplicity of the system and the service life of the parts.

CN222633536UActive Publication Date: 2025-03-18WEICHAI POWER CO LTD +1
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Patent Information

Application Number
CN202421453496.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-24
Publication Date
2025-03-18
Estimated Expiration
2034-06-24

AI Technical Summary

Technical Problem

The existing agricultural machinery vehicle control system is complex, prone to failures and impact, reducing the life of parts, and cannot meet the needs of simplified and lightweight structure.

Method used

A lifting and lowering functional structure is designed, by providing a sliding cavity and a main valve core in the valve body, and integrating a first conduction mechanism, a second conduction mechanism and a third conduction mechanism on the main valve core, the strong pressure lowering, natural lowering and lifting of the load are realized.

Benefits of technology

The system structure and number of oil channels are simplified, the number of valve core components is reduced, the overall structure weight and assembly difficulty is reduced, the service life of parts is improved, and the maintenance and maintenance costs are reduced.

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Abstract

The utility model discloses a lifting and descending functional structure, and belongs to the field of control valves. According to the technical scheme, the lifting and descending function structure comprises a valve body, the valve body is provided with a first oil way communicated with an oil pump, a second oil way communicated with an oil tank, a third oil way communicated with a rodless cavity of an oil cylinder and a fourth oil way communicated with a rod cavity of the oil cylinder, and the lifting and descending function structure further comprises a sliding cavity formed in the valve body. A main valve element is connected into the sliding cavity in a sliding mode, and a first conduction mechanism is arranged on the main valve element. According to the utility model, the strong pressure of the load is lowered and integrated on the main valve core, so that the impact caused by disordered control logic during opening and closing is avoided, the system structure is simplified, the number of oil ducts is reduced, the number of valve core components used in the whole hydraulic system is reduced, the weight of the whole structure is reduced, and the assembly difficulty is reduced; and the service life of parts is prolonged, so that the maintenance cost and the maintenance cost are reduced.
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