Gear shift fork foot deformation testing device

Abstract

The invention discloses a device for testing the deformation amount of the fork foot of a shift fork, which comprises: a base, one end of the top surface of which is provided with a box body, and a first fixture is formed on the outer side wall of the box body; the seat body is installed on On the top surface of the seat body, the first fixture faces the seat body, and the side of the seat body is provided with a second fixture opposite to the first fixture; the power actuator is arranged on the box Inside the body, it has two rods that can be extended and retracted in the horizontal direction. Fork foot fixing devices are installed on the two rods, and force sensors are installed in the fork foot fixing devices; displacement measuring devices have two, fixed on the On the above-mentioned base, it is used to measure the displacement of the two fork-foot fixing devices. The invention can realize simple, rapid and accurate measurement of the deformation amount of the fork leg of the shift fork.

Description

technical field [0001] The invention relates to a test device, in particular to a test device for the deformation amount of a shift fork foot of a transmission. Background technique [0002] The transmission shift fork is an actuator for shifting gears in the transmission, and the stiffness of the fork leg structure is one of the important indicators for the design of the shift fork structure. The stiffness of the fork leg directly reflects the deformation of the fork leg under a certain concentrated force, and the rapid and accurate measurement of the deformation of the fork leg needs to be carried out through a testing device. [0003] The testing device in the prior art includes a clamping mechanism, a tensile machine connecting rod structure, a disc structure and a base, the clamping mechanism and the tensile machine connecting rod structure are connected to the base, and the shift fork is installed in the clamping mechanism and fixedly clamped. , the disc structure is ...

AI Technical Summary

Problems solved by technology

[0004] The method of using the connecting rod of the tension machine to drag the disc structure to apply load to the fork legs of the shift fork will inevitably have a large error in measuring the deformation of the two fork legs of the shift fork.

[0005] First of all, a single tensile machine connecting rod applies a load through the disc structure, which cannot guarantee that the load distributed to the two fork legs is balanced, and there is an error in examining the difference in the deformation of the two fork legs;

[0006] Secondly, the displacement difference between the two prongs is affected by the radial movement of the disk, which may cause the measured deformation of the left and right prongs to not be the real value, resulting in serious random errors or even errors.

Images