CN101246088A - Verification device for the corner disc of portable four-wheel aligner - Google Patents

Abstract

The invention discloses a verification device for a corner disc of a portable four-wheel aligner. The purpose is to provide a special device for comprehensive verification of the corner disc of the automobile four-wheel aligner, and to fill the gap in this equipment. The verification device is composed of a base supporting part (1), a column rotating shaft part (2), a four-bar mechanism part (3) and a pressing and measuring part (4). The column shaft part (2) is vertically rotatable relative to the base support part (1) and installed on the base (5) in the base support part (1), and the four-bar mechanism part (3) can be up and down relative to the column shaft part (2) The rotating one is installed on the upper end of the column (8) in the shaft part (2) of the column, and the pressing metering part (4) is fixed on the plane of the longitudinal swing arm (19) of the four-bar mechanism part (3), and the metering part is pressed after installation The axis of revolution of (4) is parallel to the axis of revolution of the column shaft part (2). The verification device has the advantages of low cost, high precision, strong adaptability and convenient use.

Description

Verification device for the corner disc of portable four-wheel aligner

technical field

The present invention relates to a test device for automobile testing equipment applied in the field of automobile industry, more specifically, it relates to a test device for a portable four-wheel aligner corner disc

Background technique

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.

The four-wheel aligner is the most important testing equipment for checking wheel alignment. 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 performance of the four-wheel aligner cannot be effectively tested at present. The detection accuracy of the wheel aligner itself cannot be guaranteed.

The four-wheel aligner has multiple functions, such as detecting wheel camber, toe-in, kingpin caster, kingpin inclination, and the maximum steering angle and containment angle of the wheel. 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 kingpin cannot be directly measured by the sensor of the four-wheel aligner, but indirectly measured by the corresponding mathematical model Therefore, it is extremely difficult to test the detection accuracy of different four-wheel aligners.

The corner plate of the four-wheel aligner is the main accessory of the four-wheel aligner.

The measurement of the caster angle and the inclination angle of the kingpin by the four-wheel aligner is indirectly measured through a mathematical model. In the model, the caster angle and the inclination angle of the kingpin are functions of the horizontal rotation angle of the wheel. The four-wheel aligner is placed horizontally The corner disc under the two front wheels completes the measurement of the horizontal rotation angle of the wheel to obtain the caster angle and the kingpin inclination angle. At the same time, the four-wheel aligner also needs to measure the maximum steering angle of the wheel through the corner disc. Therefore, in order to ensure the accuracy of the measurement results of the four-wheel aligner, it is necessary to verify the corner plate of the four-wheel aligner.

At present, there is no special device for comprehensive verification of the corner disc of the automobile four-wheel aligner.

Contents of the invention

The technical problem to be solved by the invention is to provide a verification device for the corner disc of a portable four-wheel aligner for automobiles in response to the needs of production practice.

Referring to Fig. 1 to Fig. 9, in order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions to realize. The verification device for the corner disc of the portable four-wheel aligner of a vehicle is composed of a base supporting part, a column rotating shaft part, a four-bar mechanism part and a pressing and measuring part.

The shaft part of the column is vertical and can rotate relative to the support part of the base and is installed on the base in the support part of the base. The part of the four-bar mechanism can be rotated up and down relative to the shaft part of the column and is installed on the upper end of the column in the shaft part of the column. The pressing and measuring part is fixed on On the plane of the longitudinal swing arm of the four-bar mechanism part, after installation, the axis of rotation of the compression metering part is parallel to the axis of rotation of the shaft part of the column.

The base supporting part described in the technical solution is composed of the base, the magnetic watch base and the locking knob of the magnetic watch base. The base is a flat cuboid box-type structural member, and its upper surface is fixed with flat steel bars along the transverse direction. A circular boss is fixed on the upper surface of one end of the longitudinal symmetrical axis of the base and a vertical through hole is processed on it. Two square bosses are symmetrically fixed on the two sides of the circular boss with the longitudinal axis of symmetry, and a vertical threaded through hole is processed on each of them. The rotation axis of the through hole is in the same vertical plane, which is perpendicular to the longitudinal axis of symmetry of the base, and two square pits for installing the magnetic meter seat are processed on the inner side of the three bosses symmetrically with the axis of longitudinal symmetry, which are symmetrical in the longitudinal direction of the base The upper surface of the other end of the axis is processed with a square pit for installing the magnetic table base. The magnetic table base is put into the pit. A through hole is drilled on the side wall of the base adjacent to the three square pits. The magnetic table base is locked by the locking knob. Pass through the through hole and screw into the pre-processed threaded hole on the side of the magnetic meter base; the column shaft part is mainly composed of a column, a spring, a rotating shaft, an adjustment shaft, an adjustment piece and a column locking knob. The rotating shaft passes through the longitudinal through hole of the column to form a rotating connection or a fixed connection. The lower end of the rotating shaft is vertically inserted into the through hole at the end of the base to form a fixed or rotating connection. The adjustment piece is fixed on both sides of the outer middle of the column. The direction of the arc-shaped groove faces outward, and the adjusting shaft is in contact with the arc-shaped groove of the adjusting plate. The slender screw at one end of the spring passes through the through holes at both ends of the adjusting shaft and is fixed with nuts. The other end of the spring is hooked to the spring in the four-bar mechanism. In the hole of the connection seat, the screw rod of the upright locking knob passes through two through holes fixed on the rectangular steel sheet on the bottom surface of the upright to connect with the threaded holes of the two square bosses on the upper surface of the base; the upright is a cuboid A box-shaped structural member, two co-linear through-holes that are rotationally connected or fixedly connected with the rotating shaft are processed on the longitudinal symmetrical axis of the column. Circular boss, two rectangular steel sheets protruding from both sides of the column and processed with through holes are symmetrically fixed on both sides of the circular boss. The axes of the two through holes are in line with the two The axes of the threaded holes are collinear, and two colinear through-holes with collinear axes and the connection shaft of the four-bar mechanism are processed on the upper and lower sides of the column; the four-bar mechanism part is mainly composed of handles, upper swing arm, a spring connecting seat, a four-bar mechanism connecting shaft, a lower swing arm and a longitudinal swing arm. The handle is fixed in the two through holes at one end of the upper swing arm, and the two through holes at the other end of the upper swing arm are rotationally connected or fixedly connected with the two ends of the connecting shaft of the four-bar mechanism installed in the two through holes on both sides of the column. Two identical right-angle spring connection seats are symmetrically fixed on the upper swing arm near the column. The other right-angle side of the spring connection seat is processed with a through hole for hanging with the spring, and the middle part of the upper swing arm is processed with a through hole. The connecting shaft of the four-bar mechanism is rotationally connected with one end of the longitudinal swing arm processed with a through hole, and the other end of the longitudinal swing arm processed with a through hole is rotationally connected with one end of the lower swing arm processed with a through hole by means of the connecting shaft of the four-bar mechanism. The two through holes at one end are rotationally connected or fixedly connected with the two ends of the connecting shaft of the four-bar mechanism installed in the two through holes at the lower ends of the two sides of the column; It is composed of plate, pressure plate, elastic rubber pad, jack-type indexing head moving plate, encoder and encoder bracket. The base of the fixed plate of the jack-type dividing head in the compression measurement part is fixedly connected with the plane part of the longitudinal swing arm, and the hollow shaft end of the moving plate of the jack-type dividing head is inserted into the oblong hole of the fixed plate of the jack-type dividing head to form a moving Fitting connection, and fixed connection with the rotary shaft of the encoder, the encoder housing is fixedly connected with one end of the encoder bracket, and the other end of the encoder bracket is fixedly connected with the side of the base of the jack-type dividing head fixed plate, and there are three fixed The long axis of one side of the pressure plate with the triangular shape of the disc and the three elastic rubber pads is inserted into the hole of the moving plate of the socket-type dividing head to form a fixed connection.

The beneficial effects of the present invention are:

(1) The four-bar mechanism is used as the motion transmission mechanism to realize fast clamping. The use of this structure makes the device light in weight, low in processing cost, improves work efficiency, and avoids the high machining accuracy of the screw nut and other motion transmission mechanisms. The downside of being slow.

(2) Use high-precision angle measuring devices (such as mechanical indexing heads, optical indexing heads, rotary tables for machine tools, jack-type rotary indexing devices, etc., the following uses jack-type indexing heads as examples) to measure wheels Horizontal corner. First of all, the dividing head is a commonly used instrument without additional processing and can meet the requirements of mass production; secondly, the dividing head has the characteristics of convenient angle adjustment, which can be adjusted to the range specified in the metrological verification regulations according to the requirements for the horizontal rotation angle of the wheel during verification. any angle within. Thirdly, the dividing head has the function of precise angle measurement, and the dividing plate can be used for arbitrary indexing, which can fully meet the requirements of the measurement verification regulations for verification accuracy.

(3) Two bidirectional quick return springs are used to simultaneously implement the function of exerting downward positive pressure on the corner plate and returning the dividing head upward after the verification is completed. In the design, the springs have different effects on both sides of the dead point. , the component force of the spring below the dead point makes the dividing head metering device move downward and generates a downward positive pressure to ensure that the pressure plate and the corner plate are in close contact. After the handle is lifted up and passes through the dead point, the spring generates The upward component force makes the dividing head move upward against the gravity and return to the initial position, reducing the operator's operating force.

(4) The pressing and measuring device on the upper part of the base can rotate with the column in the horizontal plane. After adjusting the direction of the pressing and measuring device, this design can meet the verification of the corner plate fixed on the lifting frame.

(5) The device is installed with a magnetic base, which is a general-purpose instrument with light weight, high precision, no need for additional processing, and low cost. At the same time, the use of a magnetic base also meets the requirements for rapid installation of equipment.

(6) A three-point pressure plate is adopted, and an elastic rubber pad is used at the bottom to ensure that the pressure plate and the corner plate are closely fitted to prevent slipping during rotation.

(7) The base is made by sheet metal technology, which reduces the weight. After welding the steel bar on the upper surface of the base, only the upper surface of the steel bar is processed, which reduces the processing area and reduces the processing cost.

(8) In addition to directly reading the angle from the dividing head, the device also uses a high-precision rotary encoder to measure the angle, which makes the reading more convenient.

Description of drawings

Below in conjunction with accompanying drawing, the present invention will be described in further detail:

Fig. 1 is the axonometric projection view of the verification device of the corner disc of the portable automobile four-wheel aligner viewed from the XOZ plane along the negative direction of the Y axis;

Fig. 2 is an axonometric projection view of the supporting part of the base of the verification device of the portable four-wheel aligner for a portable automobile viewed from the negative direction of the Y axis from the XOZ plane;

Fig. 3 is an axonometric projection view of the shaft part of the vertical column of the verification device of the portable four-wheel aligner for a portable car, viewed from the negative direction of the Y axis along the XOZ plane;

Fig. 4 is an axonometric projection view of the rotating shaft part of the vertical column of the verification device of the portable four-wheel aligner for a portable automobile, viewed from the positive direction of the Y axis from the XOZ plane;

Fig. 5 is an axonometric projection view of the four-bar mechanism part of the verification device of the portable four-wheel aligner corner disc from facing the XOZ plane along the negative direction of the Y axis;

Fig. 6 is an axonometric projection view of the four-bar mechanism part of the verification device of the portable four-wheel aligner corner disc from facing the XOZ plane along the positive direction of the Y axis;

Fig. 7 is an axonometric projection view of the compression measurement part of the verification device of the portable four-wheel aligner corner plate from facing the XOZ plane along the negative direction of the Y axis;

Fig. 8 is an axonometric projection view of the compression measurement part of the verification device of the portable four-wheel aligner corner plate from facing the YOZ plane along the negative direction of the X axis;

Fig. 9 is an axonometric projection view of the vertical column of the verification device of the portable four-wheel aligner for a portable automobile viewed from the positive direction of the Z axis from the XOY plane;

In the figure: 1. Base support part, 2. Column shaft part, 3. Four-bar mechanism part, 4. Compression measurement part, 5. Base, 6. Magnetic meter seat, 7. Magnetic meter seat locking knob, 8. Column, 9. Spring, 10. Rotating shaft, 11. Adjusting shaft, 12. Adjusting plate, 13. Column locking knob, 14. Handle, 15. Upper swing arm, 16. Spring connecting seat, 17. Four-bar mechanism connecting shaft , 18. Lower swing arm, 19. Trailing arm, 20. Jack-type indexing head fixed plate, 21. Pressure plate, 22. Elastic rubber pad, 23. Jack-type indexing head moving plate, 24. Encoder, 25. Encoder bracket.

Detailed ways

Below in conjunction with accompanying drawing, the present invention will be described in further detail:

At present, there is no special device for comprehensive verification of the corner disc of the automobile four-wheel aligner. The verification device for the corner disc of the portable four-wheel aligner of the present invention is composed of a base supporting part 1 , a column shaft part 2 , a four-bar mechanism part 3 and a pressing and measuring part 4 .

The column rotating shaft part 2 is installed vertically on the upper surface of the base 5 in the base support part 1 by means of the rotating shaft 10, and can be rotated relative to the base support part 1 as required, and the four-bar mechanism part 3 is installed on the column by means of the four-bar mechanism connecting shaft 17. The upper end of the column 8 in the rotating shaft part 2 can rotate up and down relative to the rotating shaft part 2 of the column, and the pressing metering part 4 is fixed on the plane of the longitudinal swing arm 19 of the four-bar mechanism part 3 with screws, and the measuring part 4 is pressed after installation. The axis of rotation is parallel to the axis of rotation of the column shaft part 2 . Because the rotation axis of the column shaft part 2 is perpendicular to the base support part 1 , the rotation axis of the pressing metering part 4 is also perpendicular to the base support part 1 .

The base support part 1 is composed of a base 5, a magnetic watch base 6 and a magnetic watch base locking knob 7. Base 5 is a flat cuboid box body structure, which is processed by section steel and steel plate (also can be a casting), and its upper surface is horizontally fixed with flat steel bars, and then processed, which can reduce the processing surface and be used for Place the corner plate of the four-wheel aligner to be verified. On the upper surface of one end of the longitudinal symmetry axis of the base 5, a horizontal circular boss is fixed by welding (or with screws) and a vertical through hole is processed thereon. Symmetrical welding (or screws) is used to fix a horizontal square boss and process a vertical threaded through hole on it, the vertical through hole on the circular boss and the vertical threaded through hole on the two square bosses The connection line between the hole centers should be perpendicular to the longitudinal axis of symmetry of the base 5, or in other words, the axis of rotation of the vertical through hole on the circular boss and the axis of rotation of the vertical threaded through hole on the two square bosses are in the same vertical plane, and the vertical plane and The longitudinal axis of symmetry of the base (5) is vertical, and two square pits for installing the magnetic meter seat 6 are processed symmetrically with the axis of longitudinal symmetry on the inner side of the three bosses, and a magnetic force is installed on the upper surface of the other end of the axis of symmetry of the base 5. The square pit of the table base 6, three square pits are close to the side wall of the base 5, so that it is fixed by the magnetic table seat locking knob 7, the magnetic table base 6 is loaded into the pit, and the base 5 adjacent to the three square pits The side wall is drilled with a through hole, and the locking knob 7 of the magnetic base is screwed into the pre-processed threaded hole on the side of the magnetic base 6 through the through hole. When the locking knob 7 of the magnetic base is turned, it can be locked or locked. Release the action of the magnetic watch base 6.

The column rotating shaft part 2 is mainly composed of a column 8, a spring 9, a rotating shaft 10, an adjusting shaft 11, an adjusting piece 12 and a column locking knob 13. The rotating shaft 10 passes through the longitudinal through hole of the column 8 and is connected with a dynamic fit by means of a bearing (it can also be fixedly connected by means of a thread pair or welding), and the lower end of the rotating shaft 10 is vertically inserted into the through hole at the end of the base 5 and fixed by means of a thread pair Connected on the base 5, when the rotating shaft 10 is fixedly connected with the longitudinal through hole of the column 8 by means of thread pair or welding, the lower end of the rotating shaft 10 can also be installed vertically in the through hole at the end of the base 5 by means of a bearing to form a dynamic Cooperate with the connection, the adjustment piece 12 is fixed on both sides of the middle part of the outer side of the column 8 by welding (or with screws). In the arc groove of the adjustment shaft 11 and the arc groove of the adjustment piece 12 are in contact connection, the slender screw rod at one end of the spring 9 passes through the through holes at both ends of the adjustment shaft 11 and is fixedly connected with nuts, and the other end of the spring 9 is hooked on four In the hole of the spring connection seat 16 in the rod mechanism part 3, the screw part of the column locking knob 13 passes through two through holes fixed on the rectangular steel sheet on the bottom surface of the column 8 and is connected with the threaded hole on the upper surface of the base 5 .

The column 8 is a box-shaped structural part of a cuboid. On the longitudinal axis of symmetry of the column 8, two co-linear through holes connected to the rotating shaft 10 are processed. The center of the bottom surface of the column 8 is fixed by welding (or with screws). The circular boss that contacts the upper surface of the circular boss of the base 5 is connected, and the through hole that is processed on the lower end surface of the column 8 to be connected with the rotating shaft 10 is processed on the center of the circular boss. Both sides are symmetrically fixed two rectangular steel sheets protruding from both sides of the column 8 and processed with through holes. The axes of these two through holes are collinear with the axes of the two threaded holes on the upper surface of the base 5. The two side surfaces of 8 respectively process the through holes that are collinear with the four-bar mechanism connecting shaft 17 by means of bearings and are connected (also can be fixedly connected by means of screw thread pair or welding etc.) up and down.

The four-bar mechanism part 3 is mainly composed of a handle 14 , an upper swing arm 15 , a spring connecting seat 16 , a four-bar mechanism connecting shaft 17 , a lower swing arm 18 and a longitudinal swing arm 19 . The handle 14 is fixed in the two through holes at one end of the upper swing arm 15 through a thread pair (or by welding), and the two through holes at the other end of the upper swing arm 15 are installed on both sides of the column 8 by means of the thread pair and the bearings. The two ends of the connecting shaft 17 of the four-bar mechanism in the two through holes at the upper end are fixedly connected. When the connecting shaft 17 of the four-bar mechanism is fixedly connected in the two through holes on the two sides of the column 8 by means of thread pair or welding, the upper pendulum The two through holes at the other end of the arm 15 can also be installed on the two ends of the four-bar mechanism connecting shaft 17 by means of bearings, and the two sides of the upper swing arm 15 near the column 8 are fixed symmetrically with screws or by welding. Two identical spring connecting seats 16, the spring connecting seats 16 are right-angled, the right-angled side of the spring connecting seat 16 is fixed on the upper swing arm 15, and the other right-angled side of the spring connecting seat 16 is drilled with a spring 9 hanging The through hole connected to the upper swing arm 15 is processed in the middle of the through hole by means of a four-bar mechanism to connect the shaft 17 and the bearing to one end of the longitudinal swing arm 19 processed with a through hole. The other end of the longitudinal swing arm 19 is processed with a through hole. Connect shaft 17 and bearing with the rotation connection of one end of the lower swing arm 18 that is processed with through hole by means of a four-bar mechanism, and the two through holes at the other end of lower swing arm 18 are mounted on the two sides of the lower end of column 8 both sides by means of a threaded pair and bearings. The two ends of the four-bar mechanism connecting shaft 17 in the through hole are fixedly connected. When the four-bar mechanism connecting shaft 17 is fixedly connected in the two through holes at the lower ends of the two sides of the column 8 by means of threaded pairs or welding, the other end of the lower swing arm 18 The two through holes can also be installed on the two ends of the four-bar mechanism connecting shaft 17 by means of bearing moving fit. In fact, the upper swing arm 15, the lower swing arm 18, the longitudinal swing arm 19 and the column 8 constitute a parallelogram four-bar mechanism. The upper swing arm 15, the lower swing arm 18 and the longitudinal swing arm 19 are all sheet metal members. A steel plate with a certain rigidity and strength is turned upward from both sides to form a right angle. After processing, its cross-section is U-shaped. The upper swing arm 15 After upward flanging processing, respectively remove a piece of steel plate at its two ends, upper swing arm 15 looks like Japanese font from profile. Of course, the upper swing arm 15, the lower swing arm 18 and the longitudinal swing arm 19 can also be processed into a flat cuboid box structure by adopting section steel and steel plate.

The pressing and measuring part 4 is mainly composed of a jack-type indexing head fixed plate 20 , a pressure plate 21 , an elastic rubber pad 22 , a jack-type indexing head moving plate 23 , an encoder 24 and an encoder bracket 25 .

The base of the socket-type indexing head fixed plate 20 in the compacting measurement part 4 is fixedly connected with the plane part of the longitudinal swing arm 19, and the socket-type indexing head moving plate 23 is a hollow shaft, and one end of the hollow shaft is welded with a The holed disc, the hollow shaft end of the socket-type indexing head moving plate 23 is inserted into the oblong hole of the jack-type indexing head fixed plate 20 and is connected with the dynamic fit by means of bearings, the jack-type indexing head moving plate 23 After being inserted, the hollow shaft end of the encoder 24 is fixedly connected with the rotary shaft end of the encoder 24 by means of a key, and one end of the encoder 24 housing and the encoder bracket 25 is fixedly connected with a screw, and the other end of the encoder bracket 25 is connected to the jack-type indexing The side of the base of the head fixed plate 20 is fixed and connected by screws, and three discs are fixed and an elastic rubber pad 22 is fixed on the lower side of each disc. The shape of the pressure plate 21 is triangular in shape. And adopt key, screw to be fixedly connected in the hole of head moving plate 23. That is, the pressure plate 21 rotates synchronously with the jack-type indexing head moving plate 23, and also rotates synchronously with the encoder 24, and the indication value that the jack-type indexing head moving plate 23 rotates is also the indication value that the encoder 24 rotates.

The working principle and operation method of the verification device of the corner disc of the portable four-wheel aligner for automobiles

First, place the verification device of the four-wheel aligner corner disc on the steel lifting frame, adjust the magnetic knobs of the three magnetic gauge bases 6, and fix the base 5. If the corner plate can be moved, place the corner plate on the upper surface of the base 5, hold the handle 14 and apply force downwards. At the initial position, the pulling force of the spring 9 generates an upward component force, so that the four-bar mechanism part 3 is compressed for measurement. Part 4 is kept at the highest position. When the spring 9 is under the downward force of the handle 14, the component force direction of the spring tension becomes downward after crossing the dead point position, driving the four-bar mechanism part 3 and pressing the measuring part 4 Move downward to make the pressure plate 21 and the elastic rubber pad 22 press on the angle plate to be verified, turn the jack-type indexing head moving plate 23, and drive the angle plate to rotate a certain angle, which is the horizontal plane angle of the wheel, and turn the indexing head Comparing the standard angle value with the indication of the corner disc, the verification of the corner disc can be completed.

If the corner plate is fixed on the lifting frame, that is, the corner plate cannot be moved, then first unscrew the locking knobs 13 on both sides of the column 8, so that the column shaft part 2, the four-bar mechanism part 3, and the compression metering part 4 Rotate 180° around the rotating shaft 10 (or rotate 180° from the initial position relative to the base 5), and then screw in two locking knobs 13 to fix the column 8. At this time, the four-bar mechanism part 3 and the compression metering part 4 are rotated to On the side opposite to the base 5, align the pressure plate 21 and the elastic rubber pad 22 with the corner plate to be verified, adjust the magnetic knobs of the three magnetic gauge bases 6 to fix the base 5, hold the handle 14 and apply force downwards, initially position, the spring tension produces an upward component force, so that the four-bar mechanism part 3 and the pressing measurement part 4 are kept at the highest position. When the spring is under the downward force of the handle 14, the spring tension increases The direction of the component force becomes downward, driving the four-bar mechanism part 3, and pressing the measuring part 4 to move downward, so that the pressure plate 21 and the elastic rubber pad 22 are pressed on the corner plate to be verified, and the jack-type indexing head is rotated to move The disc 23 drives the corner disc to rotate a certain angle, which is the horizontal plane angle of the wheel, and the standard angle value of the dividing head is compared with the indication of the corner disc to complete the verification of the corner disc.

If the force of the spring 9 is too large or too small, the spring force of the spring 9 can be adjusted by moving the adjusting shaft 11 at different positions of the arc grooves on the adjusting piece 12 .

Claims (6)

1. A verification device for a portable four-wheel aligner corner disc, characterized in that the verification device for a portable four-wheel aligner corner disc consists of a base support part (1), a column shaft part (2), Composed of a four-bar mechanism part (3) and a compacting metering part (4); The column shaft part (2) is vertically rotatable relative to the base support part (1) and installed on the base (5) in the base support part (1), and the four-bar mechanism part (3) can be up and down relative to the column shaft part (2) The rotating one is installed on the upper end of the column (8) in the shaft part (2) of the column, and the pressing metering part (4) is fixed on the plane of the longitudinal swing arm (19) of the four-bar mechanism part (3), and the pressing metering part is pressed after installation. The rotation axis of the part (4) is parallel to the rotation axis of the column shaft part (2). 2. according to the verification device of the described portable four-wheel aligner corner plate of claim 1, it is characterized in that described base supporting part (1) is made of base (5), magnetic force table base (6) and magnetic force table base The locking knob (7) is composed; The base (5) is a flat cuboid box-type structural member, and its upper surface is fixed with a flat steel bar along the transverse direction, and a circular boss is fixed on the upper surface of one end of the longitudinal symmetrical axis of the base (5) and processed on it. A vertical through hole, two square bosses are fixed symmetrically with the longitudinal symmetry axis on both sides of the circular boss and a vertical threaded through hole is processed on each of them, the rotation axis of the vertical through hole on the circular boss is in line with the two The axes of rotation of the vertical threaded through-holes on the four square bosses are in the same vertical plane, which is perpendicular to the longitudinal axis of symmetry of the base (5), and two mounting magnets are processed symmetrically on the inner side of the three bosses with the axis of longitudinal symmetry. The square pit of table base (6), on the upper surface of the other end of the longitudinal axis of symmetry of base (5), process a square pit where magnetic table base (6) is installed, and magnetic table base (6) is packed in the pit, with three squares A through hole is respectively drilled on the side wall of the adjacent base (5) of the pit, and the magnetic table base locking knob (7) passes through the through hole and is screwed in the pre-processed threaded hole of the magnetic table base (6) side. 3. according to the verification device of the described portable four-wheel aligner corner plate of claim 1, it is characterized in that described column rotating shaft part (2) is mainly composed of column (8), spring (9), rotating shaft (10) , the adjustment shaft (11), the adjustment piece (12) and the column locking knob (13); The rotating shaft (10) passes through the vertical through hole of the column (8) to form a rotational connection or a fixed connection, and the lower end of the rotating shaft (10) is vertically inserted into the through hole at the end of the base (5) to form a fixed connection or a rotational connection, and the adjustment piece (12) It is fixed on both sides of the outer middle part of the column (8). When fixing, the direction of the processed arc groove on the adjustment piece (12) faces outward. The adjustment shaft (11) is in contact with the arc groove of the adjustment piece (12). The spring (9 ) the slender screw at one end passes through the through holes at both ends of the adjustment shaft (11) and is fixed with nuts, the other end of the spring (9) is hooked in the hole of the spring connecting seat (16) in the four-bar mechanism part (3), the column The threaded rod of locking knob (13) passes two through holes fixed on the rectangular steel sheets on the bottom surface of column (8) to be connected with the threaded holes of two square bosses on the upper surface of base (5). 4. according to the verification device of the described portable four-wheel aligner turntable of claim 3, it is characterized in that described column (8) is a box body structural member of a cuboid shape, on column (8) longitudinal symmetry axis Machining two co-linear through-holes that are rotationally connected or fixedly connected with the rotating shaft (10), the center of the bottom surface of the column (8) is fixed with a circular boss that is in contact with the upper surface of the circular boss of the base (5). platform, two rectangular steel sheets protruding from both sides of the column (8) and processed with through holes are symmetrically fixed on both sides of the circular boss. The axes of the two through holes are on the upper surface of the base (5). The axes of the two threaded holes are collinear, and the up and down of the two sides of the column (8) are respectively processed into two through holes collinear with the four-bar mechanism connecting shaft (17) that are rotationally connected or fixedly connected. 5. according to the verification device of the described portable four-wheel aligner corner disc of claim 1, it is characterized in that described four-bar mechanism part (3) is mainly composed of handle (14), upper swing arm (15), spring Connecting seat (16), four-bar mechanism connecting shaft (17), lower swing arm (18) and longitudinal swing arm (19); The handle (14) is fixed in the two through holes at one end of the upper swing arm (15), the two through holes at the other end of the upper swing arm (15) and the four rods installed in the two through holes at the upper end on both sides of the column (8). The two ends of the mechanism connection shaft (17) become rotationally connected or fixedly connected, and two completely identical right-angled spring connecting seats (16) are symmetrically fixed on both sides of the upper swing arm (15) near the column (8), and the spring connecting seats (16 ) on the other right-angled side is processed with a through hole hooked with the spring (9), and the middle part of the upper swing arm (15) with the through hole is processed by connecting the shaft (17) and the longitudinal swing arm (19) One end with a through hole is rotationally connected, and the other end of the longitudinal swing arm (19) processed with a through hole is connected with an end of the lower swing arm (18) processed with a through hole by means of a four-bar mechanism connecting shaft (17), and the lower swing arm (18 ) two through holes at the other end become rotationally connected or fixedly connected with the four-bar mechanism connecting shaft (17) two ends installed in the two through holes at the lower end of the column (8) both sides. 6. According to the verification device of the portable four-wheel aligner corner plate of claim 1, it is characterized in that the described compacting metering part (4) is mainly composed of jack-type dividing head fixed plate (20), pressing Disc (21), elastic rubber pad (22), jack-type indexing head moving plate (23), encoder (24) and encoder bracket (25); The base of the jack-type dividing head fixed plate (20) in the pressing metering part (4) is fixedly connected with the plane part of the longitudinal swing arm (19), and the hollow shaft end of the jack-type dividing head moving plate (23) is inserted into The oblong hole of the socket-type dividing head fixed plate (20) is dynamically fitted and connected, and is fixedly connected with the rotary shaft of the encoder (24), and the encoder (24) housing is fixedly connected with one end of the encoder bracket (25). The other end of encoder support (25) is fixedly connected with the base side of jack-type dividing head set plate (20), and the shape that is fixed with three discs and three elastic pads (22) is the pressure plate of triangular structure ( 21) The long axis on one side is inserted into the hole of the socket-type dividing head moving plate (23) to become fixedly connected.

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