Performance detection test bed for hydraulic mechanical continuously variable transmission

Abstract

The invention discloses a performance detection test bed for a hydraulic mechanical continuously variable transmission. The performance detection test bed mainly comprises a mechanical system, a hydraulic system, a measurement and control system and a loading system. The mechanical system comprises a base platform, and a diesel engine on the base platform provides power for a transmission assemblythrough a coupler. The hydraulic system comprises a hydraulic section-changing hydraulic system, a lubricating and cooling hydraulic system and a transmission speed-regulating hydraulic system; the measurement and control system comprises an industrial personal computer, a data signal acquisition module, an actuator control module, a fault alarm module and the like; and the loading system mainlyrealizes load simulation of the gearbox to be tested under different working conditions through operation of an upper computer. Through comprehensive application of four systems of machinery, hydraulic pressure, measurement and control and loading, performance detection of the to-be-tested transmission can be realized, the performance detection mainly comprises operations of load simulation of thetested transmission, monitoring of each performance state, control of an actuator, processing and analysis of test data and the like, and certain reliability is achieved.

Description

technical field [0001] The invention belongs to the field of performance detection and control of tractor gearboxes, and in particular relates to a hydraulic mechanical stepless gearbox performance detection test bench. Background technique [0002] The hydraulic mechanical continuously variable transmission is composed of a hydraulic speed regulating mechanism and a diverting and converging mechanism. It is a new transmission form in which hydraulic power flow and mechanical power flow are connected in parallel. High transmission efficiency is achieved through mechanical transmission, and hydraulic transmission and mechanical transmission are combined. Realize stepless speed change. It has a wide range of speed changes and large transmission power, which is conducive to improving vehicle power, fuel economy and work efficiency, reducing vehicle impact and noise, realizing automatic shifting and reducing driver fatigue. It is widely used in tractors and construction machiner...

AI Technical Summary

Problems solved by technology

However, the domestic technology development of hydraulic-mechanical continuously variable transmissions is relatively slow at present. Secondly, the research on transmission test ben

Images