Steering test bench of electrical-closed tracked vehicle transmission device

Abstract

The invention relates to a steering test bench of an electrical-closed tracked vehicle transmission device, which consists of three alternating current variable-frequency motors, three variable-frequency devices, three rotational speed and torque sensors, two multi-gear transmission boxes and a measurement and control system. The steering test bench is characterized in that: the three alternatingcurrent variable-frequency motors can realize four-quadrant work and realize the performance requirements on change of power flow direction of an inner track during the steering process of a tracked vehicle; the test bench is fully electrical-closed, and power absorbed by a loading motor can be used for a driving motor, thereby greatly reducing energy loss; the steering test bench can eliminate the impacts of self-inertia torque of a loading device and improving the loading precision; and the driving motor can simulate the working rotational speed property of an engine, and the loading motor can simulate the loading property of a road surface, so that the test bench can simulate the actual working condition of the tracked vehicle transmission device.

Description

Technical field: [0001] This patent belongs to the technical field of tracked vehicle test equipment, and more specifically refers to an electrically closed tracked vehicle transmission steering test bench. Background technique: [0002] Conventional tracked vehicle transmission test bench, because the loading device on both sides cannot realize the uninterrupted change from the loading function to the driving function, so this type of test bench cannot meet the requirements of the tracked vehicle turning. The output power becomes the performance requirement of absorbing power. For this reason, this type of transmission test bench cannot complete the steering test of the tracked vehicle transmission. Moreover, since the traditional transmission test bench is usually an open system, the power absorbed by the loading device cannot be directly used by the driving device, and needs to be dissipated by an additional cooling device, and the power loss of the test bench is relative...

AI Technical Summary

Problems solved by technology

[0002] Conventional tracked vehicle transmission test bench, because the loading device on both sides cannot realize the uninterrupted change from the loading function to the driving function, so this type of test bench cannot meet the requirements of the tracked vehicle turning. The performance requirement that the output power becomes the absorbed power, for this reason, this type of transmission test bench cannot complete the steering test of the tracked vehicle transmission

Moreover, since the traditional transmission test bench is usually an open system, the power absorbed by the loading device cannot be directly used by the drive device, and needs to be dissipated by an additional cooling device, and the power loss of the test bench is relatively large

In addition, due to the large inertia of the loading device, the additional inertia moment is also large during the acceleration and deceleration process, so that the actual loading moment often deviates from the target value, which affects the test accuracy

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