CN203069386U - Double wishbone suspension wheel location parameter measuring apparatus - Google Patents

Abstract

The utility model relates to a wheel positioning parameter measuring device for a double-wishbone suspension, comprising a horizontal test bench, a vertical displacement lifting mechanism, a reversing square steel component, a fixed angle steel, a slide rail component and a displacement sensor. The vertical displacement lifting mechanism Set on the horizontal test bench, one end of the reversing square steel assembly is fixed on the vertical displacement lifting mechanism, and the vertical movement is realized through the vertical displacement lifting mechanism, and a fixed surface of the fixed angle steel is connected to the reversing At the other end of the square steel assembly, the displacement sensor is movably connected to another fixed surface of the fixed angle steel. Compared with the prior art, the utility model only measures the wheel camber and toe-in of the quarter suspension, and has the advantage of high measurement efficiency.

Description

A device for measuring wheel alignment parameters of double-wishbone suspension

technical field

The utility model relates to a wheel positioning parameter measuring device, in particular to a device capable of measuring the positioning parameter of a single wheel of a double-wishbone suspension.

Background technique

With the rapid development of the automobile industry in China, more and more automobile factories have begun to pay attention to the local research and development of automobiles, and the wheel alignment parameters are undoubtedly the core of automobile stability in the development of complete vehicles. The so-called wheel alignment means that each wheel, steering knuckle and axle of the car should be installed in a certain relative position with the vehicle frame. The wheel alignment parameters generally include caster, kingpin inclination, wheel camber, and toe-in. parameters. Reasonable wheel positioning parameters maintain the stability of the car in a straight line, ensure that the car turns lightly when turning, and makes the steering wheel automatically return to the center, reducing tire wear and so on.

The existing wheel alignment parameter measurement system can only measure the overall alignment parameters of the four wheels, and in the development and research of automobiles, it is often only necessary to study a quarter of the suspension. The measurement of the wheel alignment parameters for the quarter suspension is still blank.

Utility model content

The purpose of this utility model is to provide a double-wishbone suspension wheel positioning parameter measuring device in order to overcome the above-mentioned defects in the prior art, which can only measure the wheel camber and toe-in of a quarter suspension. There is no need to measure the overall positioning parameters of the whole vehicle, so that the measurement efficiency is improved.

The purpose of this utility model can be achieved through the following technical solutions:

A device for measuring wheel positioning parameters of a double-wishbone suspension, comprising a horizontal test bench, a vertical displacement lifting mechanism, a reversing square steel component, a fixed angle steel, a slide rail component and a displacement sensor, and the vertical displacement lifting mechanism is set on the horizontal test On the stage, one end of the reversing square steel assembly is fixed on the vertical displacement elevating mechanism, and the vertical movement is realized by the vertical displacement elevating mechanism, and a fixed surface of the fixed angle steel is connected to the reversing square steel assembly At the other end, the displacement sensor is movably connected to another fixed surface of the fixed angle steel.

Leveling bolts are provided on the edge of the horizontal test bench, and the horizontal test bench is guaranteed to be in a horizontal position by adjusting the height of the leveling bolts.

The vertical displacement lifting mechanism includes a lifting column vertically fixed on the horizontal test platform and a lifting member that can move vertically along the lifting column.

The reversing square steel assembly includes two square steels hinged by square steel fixing bolts.

The displacement sensor is movably connected to the other fixed surface of the fixed angle steel through the slide rail assembly.

The slide rail assembly is composed of a slide rail fixed on a fixed angle steel and a slide block arranged on the slide rail, the displacement sensor is fixed on the slide block, and a positioning device is provided between the slide rail and the slide block. Bolt, when the slider reaches the predetermined position, the position between the slide rail and the slider is fixed by the positioning bolt.

The straightness of the slide rail is higher than 0.01mm/m.

The displacement sensor is a displacement sensor with a measurement accuracy higher than 0.01 mm.

Compared with the prior art, the utility model can be used in combination to realize the measurement of the overall positioning parameters of the whole vehicle, and can also be used alone to realize the measurement of the positioning parameters of a single wheel (quarter suspension), thereby improving the detection efficiency .

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of two measurement points for measuring the toe-in of the wheel in the front view of the wheel;

Fig. 3 is a schematic diagram of two measurement points for measuring wheel camber in a top view of the wheel.

Reference numerals: 1. Vertical displacement lifting mechanism, 2. An angle steel of the reversing square steel assembly, 3. Another angle steel of the reversing square steel assembly, 4. Displacement sensor, 5. Square steel fixing bolts, 6. Fixed angle steel, 7. Horizontal test bench, 8. Leveling bolts, 9. Slide rail assembly, A～D are the measurement points of wheel toe-in and wheel camber respectively.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in FIG. 1 , a device for measuring wheel alignment parameters of a double wishbone suspension includes a horizontal test bench 7 , a vertical displacement lifting mechanism 1 , a reversing square steel assembly, a fixed angle steel 7 , a slide rail assembly 9 and a displacement sensor 4 . The edge of the horizontal test bench 7 is provided with leveling bolts 8, and by adjusting the height of each leveling bolt 8, the horizontal test bench can be guaranteed to be in a horizontal position to improve the accuracy of measurement. The vertical displacement lifting mechanism 1 is composed of a lifting column vertically fixed on the horizontal test platform and a lifting member that can move vertically along the lifting column. The reversing square steel assembly is composed of two square steel 2 and square steel 3 hinged by the square steel fixing bolts 5. The square steel 2 is connected to the lifting member of the vertical displacement lifting mechanism 1, and its height can be adjusted by the lifting member. To adapt to vehicles with different chassis heights, the square steel 3 is connected to a fixed surface of the fixed angle steel 6 . The other fixed surface of fixed angle steel 6 is provided with slide rail assembly 9, and this slide rail assembly is made up of the slide rail that is fixed on the fixed angle steel 6 and the slide block that is arranged on the slide rail, and displacement sensor 4 is fixed on the slide block, with Realize sliding in the direction of the slide rail of the displacement sensor. A positioning bolt is arranged between the sliding rail and the sliding block, and when the sliding block reaches a predetermined position, the position between the sliding rail and the sliding block is fixed by the positioning bolt.

Since the two pieces of square steel can be adjusted to different angle positions by the square steel fixing bolt 5, the transformation of the displacement sensor 4 from the horizontal direction measurement to the vertical direction measurement can be realized, and multiple purposes can be realized by one displacement sensor. In addition, in order to ensure the measurement accuracy, the straightness of the slide rail is higher than 0.01mm/m, and the measurement accuracy of the displacement sensor is higher than 0.01mm.

The test principle of the utility model is: by adjusting the vertical displacement lifting mechanism, the height of the displacement sensor is reached to a suitable position (the position of the wheel center of the measured wheel), and the displacement values of the measuring point C and the measuring point D shown in Figure 3 are measured , assuming that X1 and X2 are the displacement values of measuring point C and measuring point D respectively, R is the measured wheel radius, then the toe angle is (X1-X2)/2R, and then adjust the position of the square steel, the displacement sensor can be in the vertical Move on the slide rail and measure the displacement values of measurement point A and measurement point B as shown in Figure 2. Assuming that the displacement values are X11 and X22 respectively, the camber angle is (X11-X22)/2R.

Claims (8)

1. double wishbone suspension wheel positioning parameter measuring device, it is characterized in that, comprise horizontal bed, the perpendicular displacement elevating mechanism, commutation square steel assembly, fixing angle steel, slide track component and displacement transducer, described perpendicular displacement elevating mechanism is arranged on the horizontal bed, one end of described commutation square steel assembly is fixed on the perpendicular displacement elevating mechanism, by the movement on the perpendicular displacement elevating mechanism realization vertical direction, a stationary plane of described fixedly angle steel is connected the other end of commutation square steel assembly, and described displacement transducer is movably connected on another stationary plane of fixing angle steel.

2. a kind of double wishbone suspension wheel positioning parameter measuring device according to claim 1 is characterized in that described hydraulic test edge of table is provided with the leveling bolt, by regulating the height of leveling bolt, guarantees that horizontal bed is horizontal.

3. a kind of double wishbone suspension wheel positioning parameter measuring device according to claim 1, it is characterized in that, described perpendicular displacement elevating mechanism comprise one be vertically fixed on lifting column on the horizontal bed and one can be along the vertical mobile lifters of this lifting column.

4. a kind of double wishbone suspension wheel positioning parameter measuring device according to claim 1 is characterized in that, described commutation square steel assembly comprises two by the hinged square steel of square steel set bolt.

5. a kind of double wishbone suspension wheel positioning parameter measuring device according to claim 1 is characterized in that, described displacement transducer is movably connected on another stationary plane of fixing angle steel by slide track component.

6. a kind of double wishbone suspension wheel positioning parameter measuring device according to claim 5, it is characterized in that, described slide track component is made up of the slide block that is fixed on the slide rail on the fixing angle steel and be arranged on the slide rail, described displacement transducer is fixed on the slide block, be provided with bolt between described slide rail and the slide block, when slide block reaches the precalculated position, by the position between bolt fixed rack and the slide block.

7. a kind of double wishbone suspension wheel positioning parameter measuring device according to claim 6 is characterized in that the linearity of described slide rail is higher than 0.01mm/m.

8. a kind of double wishbone suspension wheel positioning parameter measuring device according to claim 1 is characterized in that described displacement transducer is the displacement transducer that measuring accuracy is higher than 0.01mm.

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