Calibrating apparatus of integral type vehicle mounted digital display type vehicle fourth wheel orientator

Abstract

The invention discloses a verification device for an integral vehicle-mounted digital-display four-wheel aligner. It is designed to overcome the problems of long data reading time; split structure, increasing the difficulty and time of leveling. It consists of a frame, a wheelbase adjustment part, a rear wheel inspection part, a front wheel inspection part and a zero point inspection part. The wheelbase adjustment part is installed on one side of the working surface of the frame by the guide rail and the guide rail slider; the two sets of rear wheel inspection parts are symmetrically fixed on the working surface of the movable table, and the two sensor jackets are connected to the axis of the shaft Collinear; the two sets of front wheel inspection parts are symmetrically fixed on the working surface of the frame and the opposite side of the two sets of rear wheel inspection parts. The collinear axes of the connecting shafts are parallel and in the same horizontal plane; the four sets of zero-point inspection parts are fixed on the columns on the two sides of the front and rear sides of the frame which are symmetrical with the transverse symmetrical plane. Verify the accuracy of each parameter of the four-wheel aligner to detect the wheels.

Description

technical field [0001] The invention relates to an inspection device of automobile inspection equipment in the field of automobile industry, more specifically, it relates to an inspection device of an integral vehicle-mounted digital-display four-wheel aligner for automobiles. Background technique [0002] The car's handling stability and straight-line driving performance are guaranteed by the reasonable matching of the car's wheel alignment parameters. Any misalignment of the parameters will cause the car to lose its handling stability and straight-line driving ability, accelerate tire wear, increase fuel consumption, and reduce safety And other issues. [0003] The four-wheel aligner is the most important testing equipment for checking whether the wheel alignment is accurate. At present, there are more than 30,000 four-wheel aligners in the country, and they are increasing at a rate of 30% per year. However, no matter whether it is the production process or its use, the p...

AI Technical Summary

Problems solved by technology

The detection of the above parameters by the four-wheel aligner can be realized by different detection methods and sensors, because the caster angle and the inclination angle of the wheel cannot be directly measured by the sensor of the four-wheel aligner, but indirectly through the corresponding mathematical model Therefore, it is extremely difficult to test the detection accuracy of different four-wheel aligners

[0010] (1) The structure is complex, the processing precision is high, and the cost is increased;

[0011] (2) The transmission chain is long and the cumulative error is large;

[0012] (3) The measurement method of kingpin inclination and kingpin camber is vernier measurement, which is complicated to manufacture;

[0013] (4) The thrust angle and steering angle cannot be tested

[0016] (1) The structure is complex, the processing precision is high, and the cost is increased;

[0017] (2) The transmission chain is long and the cumulative error is large;

[0018] (3) Caster angle and steering angle cannot be tested;

[0019] (4) The left and right wheels cannot move independently, and the front and rear axles cannot move independently;

[0020] (5) Calibration accuracy, principle, and parameters do not meet the requirements of the Ministry of Communications standard JT / T505-2004

[0023] (2) Angle measurement is carried out with a dividing head. On the one hand, the data reading time is longer, and on the other hand, the weight and cost of the equipment are increased;

[0026] (5) Although the self-centering chuck can be used for precise positioning, it increases the overall weight of the equipment

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