Static calibration method for hitch force of railway vehicle
A static calibration technology for railway vehicles, applied in railway vehicle testing, calibration/testing of force/torque/power measuring instruments, measuring devices, etc., can solve problems such as inability to measure coupler force, and achieve accurate coupler force
Inactive Publication Date: 2019-11-05
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0003] Due to the particularity of the installation position of the coupler and the complexity of the operating environment, it is not possible to directly install a force measuring instrument to measure the coupler force. Usually, the strain generated by the coupler under force is converted into an electrical signal by pasting a strain gauge on the surface of the coupler. Measure the size of the electrical signal to characterize the size of the coupler force, but in different environments, the correspondence between the electrical signal and the coupler force is often different, so the above method usually cannot measure the more accurate coupler force
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Embodiment
[0046] An embodiment of the present invention provides a static calibration method for coupler force of a railway vehicle, which can be performed on a static calibration test bench for coupler force of a railway vehicle. see Figure 1-Figure 7 . The railway vehicle coupler force static calibration test bench includes a base body 11, a force applying member 12, a transmission assembly, a coupler seat 14 and a force measuring assembly.
[0047] see figure 1 , figure 2 and Figure 4 , an accommodating space 111 and an installation platform 112 are formed on the base 11 . The accommodating space 111 and the installation platform 112 are arranged in a first direction Y. In this embodiment, the first direction Y refers to the height direction of the substrate 11 when it is in operation.
[0048] A first support plate 113 and a second support plate 114 are fixed in the accommodating space 111 , and the first support plate 113 and the second support plate 114 are arranged opposi...
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The invention relates to a static calibration method for a hitch force of a railway vehicle, and relates to hitch force measurement. The method comprises the following steps that 1) the position of ameasurement point on a hitch is determined; 2) a measuring member is arranged at the measurement point and connected to a measurement circuit; and 3) a hitch pulling / pressing force is acted on the hitch, a voltage value output by the measurement circuit under effect of the hitch pulling / pressing force is read, the corresponding relation namely a calibration coefficient, between the magnitude of the hitch pulling / pressing force and that of the voltage value is obtained. The static calibration method is used to calibrate the hitch force once statically before hitch force measurement of the selected hitch in the same environment, and the correspondence between the hitch pulling / pressing force acted on the hitch and the output voltage in the environment is obtained. Thus, in the subsequent actual measurement process of the hitch force, the hitch pulling / pressing force born by the hitch is calculated based on the calibration coefficient and the voltage value read in actual measurement.
Description
technical field [0001] The invention relates to a test device, in particular to a static calibration method for coupler force of railway vehicles. Background technique [0002] With the rapid development of my country's railway transportation and the continuous improvement of the capacity of heavy-duty freight trains, the longitudinal force of heavy-duty freight trains also increases. Therefore, in order to evaluate the longitudinal dynamic performance of heavy-duty freight trains during operation, To ensure the safe operation of the train, it is necessary to analyze the force of the connecting device at the end of the car through experiments, especially the force of the coupler. [0003] Due to the particularity of the installation position of the coupler and the complexity of the operating environment, it is not possible to directly install a force measuring instrument to measure the coupler force. Usually, the strain generated by the coupler under force is converted into a...
Claims
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Login to View More IPC IPC(8): G01L25/00G01M17/08
CPCG01L25/00G01M17/08
Inventor 陈再刚刘禹清周子伟王开云凌亮张杰閤鑫
Owner SOUTHWEST JIAOTONG UNIV