Device for testing static torsional strength and vibration strength of transmission assembly

Abstract

The invention discloses a device for testing the static torsional strength and vibration strength of a transmission assembly. The device comprises a test bed and a slide block, wherein a loading mechanism on the slide block comprises a loading motor, and a half shaft which is connected to the output end of the loading motor through a transmission mechanism; the test bed is provided with a supporting mechanism consisting of a suspension fixing device and a controllable upward and downward stretching device; a transmission and an engine are fixed through a suspension point, so that the static torsional strength of a transmission shell can be inspected; and moreover, an entire power assembly is lifted to a specified height and returned quickly by using the upward and downward stretching device, so that instantaneous impact caused by gravity is generated for simulating the bumpy road condition of an entire vehicle, the suspension position strength of the transmission is tested, and the test result is closer to the practical road condition of the entire vehicle. The device has a simple and compact structure, is easy to install, and is suitable to be taken as a testing device for performing static torsional vibration test on the transmission shell of an automobile engine; and the installation space is saved, and the testing accuracy of the transmission is increased.

Description

technical field [0001] The invention relates to a vehicle performance testing device, in particular to a testing device for static torsional strength and anti-vibration strength of a transmission assembly. Background technique [0002] At this stage, domestic automobile transmission static torsion test equipment such as image 3 As shown, the test process is as follows: the transmission 33 is fixed on a panel 34 connected to the ground; the output end of the transmission 33 is fixed on the panel 37 connected to the ground through a transmission shaft 36 (half shaft), and the torque is measured by the torque sensor 32 to control; when doing the static torsion test, the transmission 33 needs to be shifted to a low-speed gear (generally the first gear); the torque is output to the reducer 33 through the loading motor 31, and the torque is increased by the reducer 33 and then transmitted to the input shaft; Since the output end is fixed at this time, the power cannot be transmit...

AI Technical Summary

Problems solved by technology

[0004] (1) A purely rigid connection is used between the tested part and the test device; under the same working condition, the requirements for the strength of the shaft and gear are increased, there is a problem of excess design, and the cost of materials is increased

[0005] (2) Due to the structural limitations of the existing static torsion test bench, it is impossible to detect the suspension point where the transmission case is connected to the vehicle, so that it can only be put in the later vehicle road test, increasing the number of products The development cycle and the number of trials of the transmission

[0006] The Chinese utility model patent No. 022767169 relates to a "hydraulic automobile transmission static torsion test bench", which uses double-leaf swing hydraulic cylinders for hydraulic multi-loading, although it can overcome the uncontrollable loading force existing in motor loading. Unsmooth and other deficiencies, but it is still impossible to simulate the actual working conditions of the whole vehicle

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