Testing system of hydraulic motor

Abstract

The invention relates to the technical field of motor tests and discloses a testing system of a hydraulic motor. The testing system of the hydraulic motor comprises a motor, a speed changing box, a tested motor, a loading motor, a first oil way, a second oil way, a feedback oil way and a compensation oil way. The speed changing box is provided with an acceleration gear and a deceleration gear, the input end of the speed changing box is in driving connection with the output end of the motor, the loading motor is butted with the tested motor through a power shaft, the output end of the speed changing box is in driving connection with the power shaft, the first oil way serves as an oil inlet channel of the tested motor, the second oil way serves as an oil return channel of the tested motor, the oil outlet end of the feedback oil way is communicated with the first oil way, and the oil outlet end of the feedback oil way selectively supplies oil for the oil inlet end of the feedback oil way or supplies oil for the oil inlet end of the feedback oil way through the loading motor. By means of the testing system, mechanical and hydraulic compensation power recovery modes or the hydraulic compensation power recovery mode can be selected according to needs, and testing requirements for power tests, service life tests, batch tests and the like on most majority of hydraulic motors can be met.

Description

technical field [0001] The invention relates to the technical field of motor testing, in particular to a hydraulic motor testing system. Background technique [0002] The hydraulic motor is the executive element in the hydraulic transmission system and the core component of the hydraulic transmission. It is widely used in various fields such as machinery, machine tools, ships, military, aerospace, petroleum, etc. Its performance directly affects and determines the performance of the hydraulic system and the whole machine. Therefore, it is very important to test the performance characteristics of hydraulic motors. [0003] At present, the test of hydraulic motor can be divided into two kinds of loading test systems: direct loading and power recovery from the energy recovery or not. The direct loading system has simple structure, convenient and accurate loading, and less interference, but it consumes a lot of energy and is not suitable for high-power tests. , Long-term life t...

AI Technical Summary

Problems solved by technology

The electric power recovery method needs to add electrical components such as rectification or inverter systems, which is complex in technology, expensive, and the recovery efficiency is not high; the mechanical compensation power recovery method has a small speed adjustment range and limits the displacement relationship between the test motor and the loading pump. The system has disadvantages such as low pressure adjustment accuracy; the hydraulic compensation power recovery method has shortcomings such as unstable test speed and incomplete test functions, which cannot meet the test needs of construction machinery hydraulic motors

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