Braking force system testing structure of disk-shaped breaking force measurement framework and manufacturing method of braking force system testing structure
A technology for testing structure and manufacturing method, which is applied in measuring devices, force/torque/work measuring instruments, instruments, etc., can solve the problems such as the lack of a bogie disc brake power system test method, achieve a good quasi-static relationship, and ensure the test Accuracy, the effect of ensuring decoupling accuracy
Pending Publication Date: 2019-12-24
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0002] For the disc-braked bogies widely used in rail vehicles, there is no prior art test method for the disc-braked powertrain of this type of bogie
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[0030] Combined with the accompanying drawings, the manufacturing method of the bogie force-measuring frame is introduced as follows:
[0031] (1) Using the finite element method to establish a finite element model of the disc-shaped brake force-measuring frame, apply simulated loads to the frame structure, design a strain bridge method on the frame for the braking force system, and determine the high-separation load identification of the force-measuring frame point area.
[0032] In this step (1), the specific process and steps of finding the high-separation load identification point area on the frame do not belong to the scope of protection claimed by the present invention, nor will it affect the public's use of the present invention for load testing, so , the present invention will not go into details.
[0033] The present invention can determine that: if figure 1 The typical disc-brake dynamometer frame shown has two beams 72 and two side beams 73 and 74 , and one or mor...
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The invention provides a braking force system testing structure of a disk-shaped breaking force measurement framework and a manufacturing method of the braking force system testing structure. According to the manufacturing method, firstly, high-resolution load identification point areas are defined on each brake lifting arm of a disk-shaped breaking framework; multiple strain gauges are pasted oneach high-resolution load identification point area to form multiple groups of full bridge circuit structures; static calibration is carried out on a framework structure pasted with the strain gaugeson a calibration test bed for a multi-channel loading force measurement framework and then decoupling calculation is carried out on each full bridge circuit structure one by one to search out one or more groups of bridge forming structures with the highest mutual decoupling precision or to search out one or more groups of bridge forming structures which can meet the decoupling precision requirements; and finally, manufacturing of the force measurement framework is completed according to the finally determined bridge forming structures. By adopting the structure and the method provided by the invention, one or more full bridge circuits are formed on one or more brake lifting arms of the force measurement framework, so that the target of testing the braking force of a bogie is achieved through testing feedback signals of the full bridge circuits.
Description
technical field [0001] The invention relates to a structure for testing the braking power train of a disc-braking force-measuring frame of a rail vehicle. Background technique [0002] For the disc brake bogies widely used in rail vehicles, in the prior art, there is no test method for this type of bogie disc brake powertrain. Contents of the invention [0003] The object of the present invention is to provide a brake force system test structure of a disc-shaped brake force measuring frame and its manufacturing method, by arranging at least one group of full-bridge circuit structures , the strain gauges on each brake arm form a full-bridge circuit for testing the braking powertrain. [0004] In order to achieve the above object, the technical scheme adopted in the present invention is: [0005] A brake force system test structure of a disc-shaped braking force-measuring frame, the disc-shaped braking force-measuring frame has two side beams and two cross beams, and one o...
Claims
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Login to View More IPC IPC(8): G01L5/00
CPCG01L5/00
Inventor 王曦陈羽杨广雪
Owner BEIJING JIAOTONG UNIV