A Gear Selection and Shift Auxiliary Mechanism Applied to the Heavy Truck Gearbox Test Bench

Abstract

The invention discloses a gear selection and shifting auxiliary mechanism applied to a gearbox test bench of a heavy truck, comprising a gear selection mechanism and a gear shift mechanism both fixed on the framework of the gearbox test bench by bolts, and the gear selection mechanism Including a gear selection support frame and the like; the gear shifting mechanism includes a gear shifting support and the like. The gear selection and shifting of the present invention both drive the pull rod to perform linear motion through the pull wire, and the pull rod drives the sector gear and then drives the positioning pin through the connecting rod; the gear selection and the gear shifting positioning and selection are completed through the movement of the cylinder and the rotation of the positioning pin. The gear selection mechanism and the two ends of the pull rod of the gear shifting mechanism are respectively connected with a force sensor and a displacement sensor, which can realize the data collection function of the force and displacement of the gear selection and gear shifting at the same time as the gear selection and shifting.

Description

technical field [0001] The invention relates to a gear selection and shifting auxiliary mechanism, in particular to a gear selection and shifting auxiliary mechanism for a heavy truck gearbox test bench. Background technique [0002] The heavy truck transmission test bench is mainly used for the performance test, temperature rise test, reliability and durability test and R&D test of the transmission and drive axle. The existing high-speed gearbox test can only be tested on the traditional gearbox test bench according to the maximum working speed test of the traditional gearbox. For electric heavy trucks, the high-speed test can only be carried out on the whole vehicle. Due to the limitation of actual road conditions, the verification and assessment cannot be completed according to the conditions required by the design. At present, there is no such auxiliary mechanism for gear selection and shifting in the society. SUMMARY OF THE INVENTION [0003] The purpose of the pres...

AI Technical Summary

Problems solved by technology

The existing high-speed gearbox test can only be tested on the traditional gearbox test bench according to the maximum operating speed test of the traditional gearbox. The high-speed test unique to the electric heavy truck can only be carried out on the whole vehicle, but due to the constraints of the vehicle space and Due to the limitation of actual road conditions, it is impossible to complete the verification and assessment according to the conditions required by the design

At present, there is no such auxiliary mechanism for gear selection and shifting in the society. This auxiliary mechanism is a mechanism applied to the test bench of heavy truck gearboxes.

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