Three-dimensional wind resistance test device for mobile vehicle model on bridge
A vehicle model and test device technology, which is applied to the field of three-dimensional wind resistance test devices for mobile vehicle models on bridges, can solve the problems of limited force measurement accuracy of mobile vehicle models and difficulty in eliminating test data, so as to improve dynamic stability and reduce The effect of manufacturing installation errors
Active Publication Date: 2017-07-07
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
In the existing mobile vehicle model wind tunnel test devices, the sliding track and traction system of the vehicle are mostly processed by themselves, and the dynamic stability of the mobile vehicle model is obviously affected by the processing and installation accuracy, and its influence is difficult to eliminate in the test data ( Such as the inertial force caused by the irregularity of the track, etc.), the force measurement accuracy of the moving vehicle model is limited
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[0016] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0017] The three-dimensional wind resistance test device of the mobile vehicle model on the bridge of the present invention is mainly composed of a vehicle model 1, a bridge model 5, a linear module 11, a servo motor 10 and the like set in the wind tunnel.
[0018] The specific structure is as follows: a bridge model 5 is fixed on the bracket 7, the bridge model 5 has an equal section along the length direction, the bracket 7 is a ІІ bracket, a cavity is formed between the upper end of the bracket 7 and the bridge model 5, and the cavity is A support 6 is provided inside, and the support 6 is fixed on the bracket 7, and the linear module 11 is fixed on the support 6. The linear module 11 is an off-the-shelf product in the field of automation, and is a square column structure of equal cross-section. Two sets of linear modules 11 are inst...
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The invention discloses a three-dimensional wind resistance test device for a mobile vehicle model on a bridge. A bridge model is fixed on a support, a cavity is formed between the upper end of the support and the bridge model, and a support is arranged in the cavity, and the support is fixed on the support. On the top, a linear module is fixed on the support; the bridge model is provided with bridge deck slots along the moving direction of the vehicle model, and elastic rubber is installed in the bridge deck slots; the force measuring bracket passes through the bridge deck slots, and one end is fixed The sliding table on the group, the other end is fixed on the force-measuring balance on the bridge deck, and the force-measuring balance is connected to the vehicle model; the transmission connection shaft of the linear module is connected to the servo motor to drive the sliding table to move to realize the movement of the vehicle model. The invention reduces the manufacturing and installation error of the device in the processing process, and improves the dynamic stability of the vehicle in the moving process.
Description
technical field [0001] The invention relates to the field of wind resistance simulation of vehicles on a bridge, in particular to a three-dimensional wind resistance test device of a moving vehicle model on a bridge. Background technique [0002] The lateral wind has a great influence on the operation of the vehicle, especially when the vehicle is running at high speed. In order to ensure the safe operation of moving trains or vehicles, it is necessary to test the aerodynamic characteristics of trains or vehicles under the action of transverse wind, so as to study the wind resistance performance of vehicles. In the existing mobile vehicle model wind tunnel test device, the sliding track and traction system of the vehicle are mostly processed by themselves, and the dynamic stability of the mobile vehicle model is significantly affected by the processing and installation accuracy, and its influence is difficult to eliminate in the test data ( Such as the inertial force caused...
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IPC IPC(8): G01M9/04
Inventor 向活跃李永乐廖海黎张明金
Owner SOUTHWEST JIAOTONG UNIV