Comprehensive road condition simulation system for automobile transmission test

Abstract

The invention relates to a comprehensive road condition simulation system for an automobile transmission test. The comprehensive road condition simulation system comprises: a simulation bracket; a vehicle body simulation unit installed on the simulation bracket and comprising a main board seat, wherein the main board seat is driven by a swing mechanism to swing, so that single-side swing or double-side simultaneous swing of an axle is achieved; and a road condition simulation unit arranged in the simulation bracket and comprising a pair of rotary drums, wherein a plurality of moving blocks are further arranged on the circumferential outer walls of the rotary drums, and the moving blocks are driven by a first servo oil cylinder to protrude out of the circumferential outer walls of the rotary drums or sink towards the center directions of the rotary drums. The system has the advantages that through mutual cooperation between the vehicle body simulation unit and the road condition simulation unit, not only can various different road surface working conditions such as road surface fluctuation, climbing, downhill and the like be simulated, but also the conditions of the vehicle under various different working conditions such as impact, braking, sliding and the like when the vehicle runs on the road surface can be simulated, so that the real driving condition of the vehicle is simulated and the accuracy of the test result is ensured.

Description

technical field [0001] The invention relates to the field of automobile testing, in particular to a comprehensive road condition simulation system for automobile transmission testing. Background technique [0002] Automobile chassis dynamometer is an indoor bench test equipment used to test the performance of automobile dynamics, multi-condition emission indicators, fuel indicators, etc. It is mainly composed of road simulation system, signal acquisition and control system, safety guarantee system and guidance system. And so on. The chassis dynamometer uses a drum to simulate the road surface. The rotation of the drum is equivalent to a continuously moving road surface, on which the wheels of the car under test roll. Automobile chassis dynamometers can be divided into single-drum and double-drum. The single-drum chassis dynamometer supports one drum for driving wheels on each side. There are few bearings, and the mechanical loss of the stand is small. The larger the diame...

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Problems solved by technology

[0004] The above-mentioned simulation device, in the process of simulating different road conditions, needs to involve the actions of multiple different mechanisms such as left and right tilt adjustment mechanisms, front and rear tilt adjustment mechanisms, and concave-convex working condition adjustment mechanisms. The structure is complex and the process is comparative. In addition, in the process of simulation, it only considers the simulation of different road conditions, and does not take into account the process of driving the vehicle, for example, the ups and downs of the car during driving, and the inclination of the car body during the turning process and so on, therefore, it cannot truly simulate the driving situation of the vehicle on the road, and the accuracy of the test results is not high

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