Wagon tarpaulin aerodynamic performance test analysis method
A technology for aerodynamic performance and railway wagons, applied in the direction of aerodynamic tests, machine/structural components testing, measuring devices, etc., can solve the research and comprehensive tests of wagon tarpaulins, tarpaulin ropes and tarpaulin rope net systems, etc. problem, to achieve the effect of strong practicability and reasonable design
Inactive Publication Date: 2013-08-14
CHINA RAILWAYS CORPORATION +1
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Problems solved by technology
So far, relevant scholars at home and abroad have never conducted systematic research and comprehensive tests on the forces of truck tarpaulins, tarpaulin ropes and tarpaulin rope nets under complex working conditions.
Method used
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[0030] The method for testing and analyzing the aerodynamic performance of the railway wagon tarpaulin is to set up data acquisition equipment on the railway wagon and the tarpaulin, and collect data including tarpaulin stress, tarpaulin surface pressure distribution, tarpaulin rope or rope net tension, freight car speed and environmental wind speed. The aerodynamic performance of the tarpaulin, tarpaulin rope and tarpaulin rope net under different working conditions is obtained through data aggregation and processing. Data collection equipment specifically includes:
[0031] Set strain gauges on the key parts of the tarpaulin to obtain the dynamic stress change data of the tarpaulin under different working conditions;
[0032] Install pressure sensors on the inner and outer surfaces of the tarpaulin of the truck to obtain the dynamic pressure change data of the tarpaulin under different working conditions;
[0033] Tension sensors are installed on the tarpaulin rope and the ...
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A wagon tarpaulin aerodynamic performance test analysis method is characterized by comprising the steps: data collection equipment is arranged on a wagon and tarpaulin so as to collect and obtain data of tarpaulin stress, surface pressure distribution of the tarpaulin, pulling force of a tarpaulin rope or a tarpaulin rope net, speed of the wagon and ambient wind speed; and through data summarization and treatment, the aerodynamic performance of the tarpaulin, the tarpaulin rope and the tarpaulin rope net under different working conditions is obtained. The method provided by the invention is reasonable in design and high in practicability, and can be used for wagon tarpaulin aerodynamic performance measurement and treatment. By obtaining the collected data of the wagon and the tarpaulin under different working conditions in real time, the aerodynamic performance of the tarpaulin, the tarpaulin rope and the tarpaulin rope net under different working conditions is obtained, and the aerodynamic performance is used for scientifically evaluating safety performance of the wagon tarpaulin and the safety of the tarpaulin, the tarpaulin rope and the tarpaulin rope net.
Description
technical field [0001] The invention belongs to the testing technology of the tarpaulin of railway freight cars, and in particular relates to an actual vehicle test and aerodynamic force analysis method for the tarpaulin of railway freight cars. Background technique [0002] Wagon tarpaulin is an auxiliary equipment for railway wagons. It is used to cover wet, flammable goods and other goods that need to be covered in open wagons. It plays an important role in railway freight. For a long time, due to the low level of containerization of railway freight in my country and the relatively limited number of boxcars, most of the goods (such as grain, fertilizer, etc.) are transported by open-top cars covered with tarpaulins. [0003] The force of the tarpaulin, tarpaulin rope and rope net directly depends on the aerodynamic effect during the operation of the truck. my country’s railway transportation has undergone six major speed increases. The speed of ordinary passenger cars is ...
Claims
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Inventor田红旗梁习锋熊小慧刘堂红姚松刘国伟许平张健杨志刚
OwnerCHINA RAILWAYS CORPORATION