Heavy-duty car dual-drive tandem testbed

Abstract

The present invention discloses a heavy-duty car dual-drive tandem testbed. The heavy-duty car dual-drive tandem testbed comprises an integration drive head and four integration loading heads, the integration drive head comprises a driving head pedestal, a variable frequency drive motor, a speed reduction and twisting increasing transmission box and a system power input test mechanism. Each integration loading head comprise one loading head pedestal, one variable frequency loading motor, one speed raising and twist decreasing transmission box and one bridge single-way output power test mechanism, the two integration loading heads are symmetrically arranged at left and right sides of a tested medium bridge, the other two integration loading heads are symmetrically arranged at left and rightsides of a tested rear bridge, the tested medium bridge is connected with the tested rear bridge through a rear bridge input test mechanism, and the integration drive head is connected with a power input end of the tested medium bridge; and all the test mechanism comprise couplers, sensors and couplers which are connected in series in order. The heavy-duty car dual-drive tandem testbed can perform test verification of the medium bridge and the rear bridge at the same time, and is specially suitable for the heavy-duty car drive system test with an inter-axle differential between the medium bridge and the rear bridge; and moreover, the heavy-duty car dual-drive tandem testbed is a rack building block combination structure to facilitate rapid assembling and lapping and extend the applicationrange of the testbed.

Description

technical field [0001] The invention belongs to the technical field of automobile testing systems, and in particular relates to a test bench for measuring double drive axles of heavy-duty automobiles, which can simultaneously test the middle axle and the rear axle of heavy-duty automobiles. Background technique [0002] In the actual use of heavy-duty vehicles, the damage ratio of drive axle is relatively high, which is not only related to the harsh environment of use, but also related to the test verification method in the design stage of drive axle. Heavy-duty off-road vehicles are driven by the middle and rear axles. Due to the high power and large output torque, independent test benches have been used in China to test and verify the middle and rear axles. [0003] This method of separately testing the middle axle and rear axle is seriously inconsistent with the actual working conditions of the vehicle. During the vehicle development stage, it is impossible to conduct rea...

AI Technical Summary

Problems solved by technology

[0003] This method of separately testing the middle axle and rear axle is seriously inconsistent with the actual working conditions of the vehicle. During the vehicle development stage, it is impossible to conduct real tests on the performance of the inter-axle differential, middle axle, and rear axle of the heavy-duty vehicle drive system. Evaluation

In order to reduce damage, axle manufacturers continue to strengthen drive axles in terms of design, technology, materials, etc., resulting in the continuous increase of vehicle spring force and quality, which poses a threat to the safe and stable operation of vehicles

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