Closed driving axle test device using hydraulic coupler for loading

Abstract

The invention discloses a closed driving axle test device using a hydraulic coupler for loading. The closed driving axle test device comprises a prime mover, a right transmission box, a power synthesis box, the hydraulic coupler, a left transmission box and a tested driving axle, wherein the first input shaft end of the right transmission box is connected with the prime mover through the shaft coupler, the second input shaft end is connected with a right output shaft of the tested driving axle, the output shaft end of the right transmission box is connected with the right input shaft end of the power synthesis box through a shaft coupler, the left input shaft end of the power synthesis box is connected with the output shaft end of the left transmission box through a shaft coupler, the output shaft end of the power synthesis box is connected with a pump wheel shaft of the hydraulic coupler through a shaft coupler, the input shaft end of the left transmission box is connected with a left output shaft of the tested driving axle, and an input shaft of the tested driving axle is connected with a worm wheel shaft of the hydraulic coupler. The closed driving axle test device has the advantages that mechanical energy at the two output ends of the tested driving axle can be returned to the input end of the tested driving axle, so that the output energy of the driving bride becomes the test power.

Description

【Technical field】 [0001] The invention belongs to the technical field of vehicle structural performance testing, in particular to a driving axle testing device. 【Background technique】 [0002] At present, there are generally two types of benches for testing the dynamic performance of drive axles. One is an open drive axle test bench in which the power flow of the test bench is not closed. The open test bench has a simple structure and is easy to install, but the output power of the drive axle can no longer be used for feedback, the test bench consumes a lot of energy, and the test cost is high. Usually, this kind of test bench is suitable for drive axle tests with small test power or short test periods. . The other is a closed test bench with a power flow cycle of the test bench. This kind of test bench can recover the energy consumed by the test, and the test energy loss is small. It is suitable for the drive axle test with high power and long test period. Common forms of...

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Problems solved by technology

Among them, the most significant advantage of the closed test bench with mechanical transmission is energy saving, which can reduce the operating cost. However, compared with the open test bench, it increases the transmission device and the servo loading device, the composition is relatively complicated, and the price is relatively expensive. ;The mechanical structure of the electric transmission closed test bench is simple and compact, the power loss is small, the efficiency is high, and the heat generation is reduced. However, the power recovery method is to convert the mechanical energy output by the drive axle into electrical energy, and then recover it through the power grid. The structure and technology of the power system complicated and costly

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