A Measuring Method of Cab Turning Angle
A technology of flip angle and measurement method, which can be used in measurement devices, vehicle testing, and machine/structural component testing. Effect
Active Publication Date: 2021-08-03
CHINA FIRST AUTOMOBILE
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Problems solved by technology
However, it is difficult to determine the tilt angle of the cab with the naked eye, and there is no tooling equipment for measuring the tilt angle of the cab
Method used
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[0037] To make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the present invention Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0038] There are potential safety hazards if the turning angle of the cab 100 is too large or too small. Therefore, in the automobile development process, the critical angle at which the center of gravity of the cab 100 crosses the turning center 200 and the maximum turning angle of the cab 100 are important design parameters and index. It is difficult to determine the turning...
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The invention relates to the technical field of automobile safety testing, in particular to a method for measuring the turning angle of a cab. The method for measuring the turning angle of the cab firstly obtains the relationship between the axial load of the lifting piston rod and its strain by performing a load-strain calibration test on the lifting piston rod; then assembles the lifting piston rod after the calibration test to the cab On the cab, an acceleration sensor is set on the cab to simulate the overturning process of the cab, and the relationship between the strain of the lifting piston rod, the overturning angle of the cab and the time is obtained; finally, the axial load of the lifting piston rod is obtained according to the data obtained before. The relationship with the rollover angle of the cab. The cab rollover angle measurement method establishes the relationship between the axial load of the lifting piston rod and the cab rollover angle, and can accurately measure the cab rollover angle, so as to quickly and reasonably obtain the maximum cab rollover angle in the process of automobile research and development. Flip the angle, shorten the test cycle and reduce the cost.
Description
technical field [0001] The invention relates to the technical field of automobile safety testing, in particular to a method for measuring the turning angle of a cab. Background technique [0002] The reversible cab greatly simplifies the work of car maintenance. At present, most commercial vehicle models are equipped with a cab hydraulic reversing device. When the engine, clutch and transmission are overhauled, the cab can be turned over by lifting the piston rod for maintenance. maintenance. The turning angle of the cab is one of the important test variables in the safety performance of the cab, and it is also one of the most important evaluation items of the cab. [0003] When overturning, if the center of gravity of the cab does not cross the overturning center, under the action of the cab’s own gravity, there will be a force to reset the cab, which poses a huge safety hazard to the maintenance staff under the cab. If the turning angle of the cab is too large, so that t...
Claims
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IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 李响刘占国董立甲叶福恒赵晋张元勤张立博
Owner CHINA FIRST AUTOMOBILE