On-bridge moving vehicle model three-dimensional wind-resistance testing device
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 problems such as difficulty in eliminating test data, limited force measurement accuracy of mobile vehicle models, etc., to improve dynamic stability, reduce The effect of manufacturing installation errors
Active Publication Date: 2015-07-08
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 further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0017] The three-dimensional wind resistance test device for a mobile vehicle model on a bridge of the present invention is mainly composed of a vehicle model 1, a bridge model 5, a linear module 11, and a servo motor 10 arranged in a wind tunnel.
[0018] The specific structure is: a bridge model 5 is fixed on the bracket 7, and the bridge model 5 has a constant section along the length direction. The bracket 7 is a ? A support 6 is provided in the cavity, and the support 6 is fixed on the support 7. A linear module 11 is fixed on the support 6. The linear module 11 is a ready-made product in the field of automation, and is a square column structure of equal cross-section. , two groups of linear modules 11 are installed in the cavity formed by the bridge model 5 and the support 7, and are connected to the support 7 through the suppor...
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The invention discloses an on-bridge moving vehicle model three-dimensional wind-resistance testing device. A bridge model is fixed to a support, a cavity is formed between the upper end of the support and the bridge model, a bearing is arranged in the cavity and is fixed to the support, and a linear module is fixed to the bearing. A bridge floor slot is formed in the bridge model in the vehicle module moving direction, and elastic rubber is installed in the bridge floor slot; a force measuring support passes through the bridge floor slot, one end of the force measuring support is fixed to a sliding table on the linear module, and a force measuring scale located on a bridge floor is fixed to the other end of the force measuring support, and is connected with a vehicle model. A transmission connecting shaft of the linear module is connected to a servo motor so as to drive the sliding platform to move, and movement of the vehicle model is accordingly achieved. By means of the on-bridge moving vehicle model three-dimensional wind-resistance testing device, the manufacturing and installing errors of the device in the machining process are reduced, and the dynamic stability of a vehicle in the moving process is improved.
Description
technical field [0001] The invention relates to the field of wind resistance simulation of vehicles running on a bridge, in particular to a three-dimensional wind resistance test device for a moving vehicle model on a bridge. Background technique [0002] Side 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 the train or vehicle under the action of lateral wind, so as to study the wind resistance performance of the vehicle. 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 cause...
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Inventor 向活跃李永乐廖海黎张明金
Owner SOUTHWEST JIAOTONG UNIV