Performance detection and analysis test stand of engineering machinery transmission assembly and test method thereof

Abstract

The present invention discloses a performance detection and analysis test stand of an engineering machinery transmission assembly. The performance detection and analysis test stand of the engineering machinery transmission assembly comprises a pedestal, a transmission to be detected, a torque converter to be detected, a driving motor, a first torque and rotational speed sensor, a second torque and rotational speed sensor, a third torque and rotational speed sensor, an accompanying gear case, a loading motor, a vibration sensor, a noise sensor, a data acquisition card, a controller and an upper computer. The driving motor, the first torque and rotational speed sensor, the transmission to be detected, the second torque and rotational speed sensor, the torque converter to be detected, the third torque and rotational speed sensor, the accompanying gear case and the loading motor are connected in turn, and the loading motor is in power supply connection with the driving motor; the first torque and rotational speed sensor, the second torque and rotational speed sensor and the third torque and rotational speed sensor are in data transmission connection with the upper computer; and the upper computer is in control connection with the driving motor and the loading motor. The performance detection and analysis test stand of an engineering machinery transmission assembly is characterized in that: a transmission and a torque converter are able to perform a performance test in the same working condition and perform a NVH detection to improve the quality of the transmission. The present invention further discloses a performance detection and analysis test method of an engineering machinery transmission assembly.

Description

technical field [0001] The invention relates to a detection and analysis test bench and a test method for detecting gearboxes before they leave the factory, in particular to a test bench and a test method for detecting and analyzing various performances of an engineering machinery gearbox assembly. Background technique [0002] The gearbox is an important transmission part of modern construction machinery. In order to accurately evaluate the transmission quality and performance of the gearbox before the whole machine is assembled, the gearbox will be placed on the test bench for testing before leaving the factory. Eddy current dynamometers and hydraulic dynamometers are often used in gearbox test benches, that is, in the test bench, the energy generated by the drive motor passes through the gearbox to be tested to the loading device of the terminal, so that the energy of the drive motor passes through the transmission to be tested. The tank is consumed in the loading equipme...

AI Technical Summary

Problems solved by technology

Eddy current dynamometers and hydraulic dynamometers are often used in gearbox test benches, that is, in the test bench, the energy generated by the drive motor passes through the gearbox to be tested to the loading device of the terminal, so that the energy of the drive motor passes through the transmission to be tested. The box is consumed in the loading equipment of the terminal, resulting in large energy consumption, so it is not suitable for long-term tests

[0003] In addition, the output of the gearbox of construction machinery is connected with the hydraulic torque converter. The current design of the gearbox test bench is mainly for the factory inspection and performance inspection (that is, the detection of transmission efficiency) of the gearbox. For the hydraulic torque converter The factory inspection of the converter can only be tested on different test benches, that is, the gearbox and the hydraulic torque converter are carried out on different test benches, and the gearbox and the hydraulic torque converter are used together, which makes the two incompatible. Accurately simulate the performance test under the same working condition, and the reliability of the test is low; at the same time, the existing test bench cannot perform NVH detection on the gearbox, so that the quality and performance of the gearbox cannot be further improved

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