System and method for measuring temperature of friction pair of wet clutch

Abstract

The invention relates to a system and a method for measuring the temperature of a friction pair of a wet clutch. A motor output shaft of a power transmission system is connected with an input end of a first transmission shaft of a wet clutch box, a first transmission gear is arranged at the input end of the first transmission shaft, a steel friction plate and a friction plate are sequentially arranged at the input end of the first transmission shaft, and a speed measuring gear is arranged at an output end of the first transmission shaft; the first transmission gear is meshed with a second transmission gear arranged on a second transmission shaft, power is transmitted to the second transmission shaft through the second transmission gear, and an output end of the second transmission shaft is sequentially connected with an adjustable inertia group and a hydraulic brake; a pump station is located between the wet clutch box and the hydraulic brake; a motor is used as a power source to output the rotating speed and the torque, and the wet clutch box controls output and cutting off of the power of the second transmission shaft in the wet clutch box. The system and the method effectively solve the problem about measurement of the temperature of the friction pair of the wet clutch in a high-speed rotating state and realize prevention of failures of the wet clutch and real-time accurate detection of the combination state.

Description

technical field [0001] The invention relates to the field of wet clutch dynamic characteristic measurement, in particular to a wet clutch friction pair temperature measurement system and measurement method. Background technique [0002] The wet clutch is a clutch with oil cooling and lubrication on the surface of the friction pair. The oil can take away the heat generated during the coupling process of the clutch at any time. Compared with the dry clutch, it has less wear, longer working life, simple control, smooth engagement, and torque capacity. Large, stable performance, low noise and many other advantages. With its good control performance and heat dissipation, wet clutches are widely used in many tracked vehicles and construction machinery. As a key component in the comprehensive transmission device, the wet clutch realizes power transmission and cut-off through the combination and separation of friction plates and steel plates. In the process of clutch engagement, d...

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Problems solved by technology

In the patent document with the publication number CN103967963A, a method for measuring the temperature of the DCT wet clutch based on neural network prediction is introduced, but this method only obtains the predicted value of the actual temperature of the wet dual clutch, and the predicted value cannot fully represent the actual temperature. value, and the predicted value does not have absolute confidence for the study of wet clutches

In the document "Experimental Device for Transient Temperature Measurement of Dry Clutch Friction Plate Surface", infrared temperature sensors and collector rings are used to measure the transient temperature of the friction surface of dry clutches. Although the device has a fast response speed and can measure any working condition However, because the interference of oil on the surface of the wet clutch will cause the instability of the infrared temperature sensor, this device is not suitable for measuring the temperature of the wet clutch

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