A hydraulic wet clutch with overload protection device

By installing a speed sensor and control system in the wet clutch, the speed difference is monitored and the hydraulic oil temperature and pressure are adjusted, which solves the problem of high temperature caused by slippage of the wet clutch on the tractor, and realizes the protection and stable operation of the hydraulic system.

CN224283277UActive Publication Date: 2026-05-26JIAMUSI JICHI TRACTOR MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIAMUSI JICHI TRACTOR MFG
Filing Date
2025-05-30
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

When existing wet clutches are used on tractors, the excessive heat generated by the slippage of the drive plate and driven plate causes the transmission box temperature to rise, which may lead to oil seal failure and sintering of transmission box gears and bearings.

Method used

The system uses a drive disc speed sensor and a driven disc speed sensor to monitor the speed difference. The control system adjusts the actuator to reduce the temperature and pressure of the hydraulic oil. The hydraulic oil cooling fan and the electronically controlled proportional valve control the pressure of the hydraulic oil chamber to reduce the engine speed in time and prevent the temperature from getting too high.

Benefits of technology

It effectively prevents the transmission box from overheating, avoids oil seal leakage and damage to transmission box components, ensures stable operation of the hydraulic system, and extends equipment life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224283277U_ABST
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Abstract

This utility model discloses a hydraulic wet clutch with an overload protection device, relating to the technical field of hydraulic clutch systems. It solves the problem of excessive transmission temperature damaging the internal structure of the hydraulic system during the application of wet clutches on tractors. The clutch includes: a hydraulic wet clutch, a driven gear ring, a driving gear ring, a driving disc speed sensor, and a driven disc speed sensor. The driven gear ring is mounted on the driven hub, and the driving gear ring is mounted on the clutch housing. The driving disc speed sensor and the driven disc speed sensor are used to monitor the speeds of the driving and driven gear rings, respectively. This utility model compares the speed difference between the clutch housing and the driven hub, and adjusts the corresponding actuators through a control system to achieve a rapid decrease in engine speed when the load is overloaded. This is achieved by activating the hydraulic oil cooling fan at high speed and using an electronically controlled proportional valve to gradually reduce the hydraulic oil pressure entering the hydraulic oil chamber until the driver restarts the system.
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