Special equipment for measuring size of hard point of chassis of accident vehicle and measuring method

Abstract

The invention discloses special equipment for measuring the size of a hard point of a chassis of an accident vehicle and a measuring method. The special equipment comprises two laser level gauges, andan auxiliary level gauge; a main laser transmitting tube and a laser receiving tube are horizontally arranged on the side surfaces of the level gauges and the auxiliary level gauge; a control line ofthe main laser transmitting tube is connected with a signal output end of the single-chip microcomputer. When special equipment is used for measuring hard points of a chassis of a vehicle body, a traditional direct measurement mode is changed into classified measurement, and when no shielding object exists below a measured point, the center position of the measured point is determined through thetwo level gauges, the distance of the measured point is measured through the laser transmitter, the laser receiver and the single-chip microcomputer, the measurement precision is not affected by theheight of the measured point, the measurement speed is high, and the measurement precision is high. When the lower part of one measured point is shielded, equivalent measurement is realized by addingan auxiliary level gauge and utilizing a rectangular principle, and other parts on the vehicle body do not need to be dismounted, so that the measurement speed and precision are effectively improved.

Description

technical field [0001] The invention relates to the technical appraisal field of road traffic accidents, in particular to special equipment and a measuring method for measuring the hard point size of the chassis of an accident vehicle. Background technique [0002] At present, when the traffic police department of the Ministry of Public Security of my country conducts statistical analysis of road traffic accidents, the types of road traffic accidents are classified into frontal collision, rear-end collision, side collision, opposite scraping, same-directional scraping, rolling, overturning, falling, Fire, hitting fixed objects, etc. According to the statistics of the Ministry of Public Security in one year, in all kinds of traffic accidents in our country, the proportion of collision accidents is up to 1%, and the casualties caused by collision accidents account for 1%. Vehicle collision traffic accidents account for more than the corresponding total number of accidents, cas...

AI Technical Summary

Problems solved by technology

[0003] After a vehicle collision, if the collision is serious but the actual collision loss is relatively small, the functions of driving, steering, and safety protection can be restored by repairing and replacing vulnerable parts, so as to resume driving, but the body generally does not need to be replaced. If the deformation of the car body is too serious, it will be scrapped directly. If the deformation is moderate, only partial repairs will be carried out. The common method of repairing the car body is sheet metal repair. The steel beams or steel plates in the deformed area are corrected, and the area with large deformation is partially cut. method, re-welding new parts, but the quality of the sheet metal or welding process will cause the size of the repaired body to be inconsistent with the original car size, which will reduce the performance of the car. Therefore, the measurement of the repaired body size is a part of the body repair. In addition, whether the car body needs to be repaired after a collision often needs to be judged according to the measured size;

[0004] However, during the measurement process, the size of the hard point hole that needs to be measured on the body (usually the installation hole of an important part on the body or a special measurement hole) is usually installed with other equipment, or there is other equipment below the hard point hole. If these dimensions are accurately measured, it is necessary to remove the relevant parts on the body first, and then measure the body. For example, the common measurement holes include the engine mounting bolt holes, but there are engine connecting bolts in the holes, and the connecting bolts are surrounded by There are other parts (transmission, drive axle, etc.) that cannot be directly measured. Usually, when measuring the horizontal or vertical dimensions of the vehicle body, the direct measurement point can be found. Many and difficult to dismantle; at present, manufacturers measure the body in white without equipment installed, so the body measurement device on the existing body production equipment cannot be used directly; if the engine and surrounding components are removed, the cost will be high and longer time;

[0005] On the other hand, the height of each measurement point on the body is inconsistent, use a gauge (attached figure 1 When measuring, the gauge is prone to inclination, resulting in large errors in the measurement data; when there are other blocking parts under the measurement point, the gauge cannot be used

[0006] To sum up, it can be seen that since there are other parts installed on the body, and under normal circumstances, dismantling is not considered, so the body size measurement of the accident vehicle after the collision cannot use the special measuring device for the body-in-white provided by the manufacturer, and the error of the existing measuring gauge is relatively large. Large, and it is impossible to measure some covered holes, so the measurement of the hard spot size in the current body repair process is often not accurate enough, and the performance of the repaired vehicle is degraded, making the body repair accidents very easy to cause conflicts between car owners, maintenance personnel and insurance companies. dispute

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