CN201060107Y - Verification device for four-wheel aligner with uncorrelated angle adjustment in vertical and horizontal planes of automobiles - Google Patents

Abstract

The utility model discloses a verification device for a vehicle vertical and horizontal plane non-correlated angle-adjusting type four-wheel aligner used in the field of the automobile industry. The aim is to solve the existing problems in the prior art, such as complex structure, high machining accuracy requirements, large cumulative error, incomplete functions, and low calibration accuracy. The device is composed of a front axle inspection part and a rear axle inspection part. The front axle inspection part is mainly composed of the front wheel inspection part, the front panel and the frame. The front panel is installed on the frame, and the two front wheel inspection parts are symmetrically installed at both ends of the front panel. The rotation axes of the two chucks in the two front wheel inspection parts are collinear; the rear axle inspection part is mainly composed of the thrust angle inspection part. , frame, upper plate, rear wheel inspection part, thrust angle shaft, and lower plate. The lower table is installed on the frame, and the upper table is installed on the lower table through the thrust angle rotating shaft. The two rear wheel inspection parts are symmetrically installed at both ends of the upper table. The two chucks in the two rear wheel inspection parts The axes of rotation are collinear.

Description

Verification device for four-wheel aligner with uncorrelated angle adjustment in vertical and horizontal planes of automobiles

technical field

The utility model relates to an inspection device of automobile inspection equipment in the field of automobile industry, more specifically, it relates to an inspection device of a four-wheel aligner of an unrelated angle-adjusting type of automobile vertical and horizontal planes.

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 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 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 many functions, such as detecting wheel camber angle, toe angle, kingpin caster angle, kingpin inclination angle, maximum wheel steering angle and thrust angle, etc. 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.

At present, there are mainly three types of inspection devices used by wheel aligner manufacturers:

1. Inclination fixed calibration device

The device can only check the detection accuracy of the four-wheel aligner for measuring wheel camber and toe angle, but cannot test the accuracy of the four-wheel aligner for measuring caster and kingpin inclination.

2. Inspection device for four-wheel aligner researched and developed by Jilin University

Invention patent number: ZL 03 110944.6, inventor: Su Jian, application date: January 23, 2003, authorization date: December 22, 2004, legal status: valid, application country: China. Utility model patent number: ZL 032 11159.9, inventor: Su Jian, application date: January 23, 2003, authorization date: November 3, 2004, legal status: valid, application country: China. The device completes the simulation of the wheel alignment angle through a series of rods. The device has the following problems in use:

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

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

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

(4) The thrust angle and steering angle cannot be tested.

3. Four-wheel aligner calibration device researched and developed by Liaoning Provincial Institute of Metrology

The device has the following problems in use:

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

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

(3) Kingpin caster angle and steering angle cannot be inspected;

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

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

Contents of the invention

The technical problem to be solved by the utility model is to overcome the technical problems existing in the prior art, and to provide a vehicle with the function of simulating various positioning angles of the wheels. The detection accuracy of the locator itself can meet the requirements of the manufacturer and the national quality supervision department for the quality inspection of the four-wheel aligner. It is a verification device for the vertical and horizontal planes of the car without correlation angle adjustment.

Referring to Fig. 1 to Fig. 12, in order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions to realize it. The verification device is designed to be composed of a front axle inspection part and a rear axle inspection part placed horizontally on the ground, and the parallel distance between the front axle inspection part and the rear axle inspection part is the wheelbase of the tested vehicle.

The front axle inspection part is mainly composed of a front wheel inspection part, a front panel and a frame. The frame is placed horizontally on the ground, the front panel is installed on the top of the frame, and the two front wheel inspection parts are symmetrically installed on the processing plane at both ends of the front panel. The rotation axis of the two chucks in the two front wheel inspection parts To be collinear, both chucks point outward.

The rear axle test part is mainly composed of a frame, an upper plate, a rear wheel test part, a thrust angle rotating shaft, a lower plate and a thrust angle test part. The lower table is installed on the top of the rack placed horizontally on the ground, the upper table is installed on the working plane of the lower table through the thrust angle rotating shaft, the thrust angle inspection part is installed at the end of the upper table, and the rear wheel inspection part On the outside, the two rear wheel inspection parts are symmetrically installed on the processing plane at both ends of the upper plate. The rotation axes of the two chucks in the two rear wheel inspection parts should be collinear, and the two chucks should point to the outside.

The front wheel inspection part described in the technical proposal is composed of an unequal angular displacement transmission mechanism, a positioning parameter adjustment mechanism, a mechanical interface and a level adjustment mechanism.

The unequal angular displacement transmission mechanism is mainly composed of a horizontal turntable, a lower steering fork, a cross shaft, an upper steering fork, a simulated kingpin and an adjusting pad.

The horizontal turntable is fixed on the processing plane at both ends of the front panel, so that the axis of the worm is perpendicular to the long side of the front panel, the adjustment pad is fixed on the rotating table of the horizontal turntable, and the lower steering fork is fixed on the adjustment pad. The cross shaft connects the lower steering fork and the upper steering fork in rotation, the bottom plane of the hemisphere at the lower end of the simulated kingpin is fixedly connected with the upper steering fork, and the rotation axis of the horizontal turntable and the rotation axis of the simulated kingpin should pass through the center of the cross shaft;

The positioning parameter adjustment mechanism is mainly composed of a kingpin inclination guide rail, a kingpin inclination indexing head, a kingpin caster angle guide rail, a kingpin caster angle indexing head, a lower guide block and an upper guide block.

The kingpin inclination indexing head and the kingpin caster angle indexing head are fixed on the processing plane at both ends of the front panel, and the three rotary axes of the horizontal rotary table, the kingpin inclination indexing head and the kingpin caster angle indexing head are spatially vertical intersect at the center of the cross axis), the kingpin inclination angle guide rail is fixed on the rotating table of the kingpin inclination angle indexing head, the kingpin caster angle guide rail is fixed on the rotating table of the kingpin caster angle indexing head, and the kingpin inside The arc-shaped side of the inclined guide rail is in motion-fit contact connection with the side wall of the groove at the other end of the lower guide block. The center of curvature of the arc surface of the inclination guide rail and the center of curvature of the arc surface of the kingpin caster angle guide rail are respectively on the rotation axes of the kingpin caster angle indexing head and the kingpin caster angle indexing head.

The mechanical interface and level adjustment mechanism are mainly composed of a V-shaped block, a chuck, a chuck shaft, a spherical guide rail, a V-shaped block guide rail, a spherical clamping handle, a spherical pressure plate, a clamping seat, a lower guide block, and an upper guide block. Composed with chuck backrest.

Through the round hole on the spherical guide rail, the spherical guide rail is set on the spherical body at the lower end of the simulated kingpin, the inner spherical surface of the spherical guide rail is in dynamic fit and contact with the spherical surface at the lower end of the simulated kingpin, and then the spherical pressure plate and the spherical surface clamping handle are sequentially set on the On the simulated main pin, there is a surface contact sliding connection between the outer spherical surface of the spherical guide rail) and the inner wall of the spherical pressure plate, and between the outer wall of the spherical pressure plate and the spherical clamping handle. through hole at one end of the block. The V-shaped block is slidably installed on the slideway of the V-shaped block guide rail. The V-shaped block guide rail is fixed on the processing plane at both ends of the front panel near the end side. The chuck is fixedly connected to the chuck backrest, and the chuck backrest is dynamically matched. Set on one end of the chuck shaft, the other end of the chuck shaft is fixedly inserted into the hole of the connecting arm on the outer spherical side of the spherical guide rail, and the clamping seat controlling whether the chuck can rotate is fixed on the connecting arm on the outer spherical side of the spherical guide rail. The rotary axis of the chuck should pass through the spherical center of the spherical guideway, and the spherical center of the spherical guideway should coincide with the center of the cross shaft.

The rear wheel inspection part described in the technical solution is mainly composed of a horizontal turntable, chuck, fixed bracket, rotating bracket, wheel camber calibration, wheel camber vernier, clamping seat, chuck backrest, wheel camber shaft and wheel Camber adjustment screw composition.

The horizontal rotary table is fixed on the processing plane at both ends of the upper table so that the axis of the worm is perpendicular to the long side of the upper table, the bottom of the fixed bracket is fixed on the rotating table of the horizontal rotary table, and the wheel camber calibration is fixed On the arc surface at the top of the bracket, the rotating bracket is movably connected to the fixed bracket through the camber shaft of the wheel, and the camber cursor is fixed on the arc surface at the top of the rotating bracket. The chuck is fixed on the back of the chuck, the back of the chuck is movably fitted on one end of the chuck shaft, the other end of the chuck shaft is fixedly inserted into the hole of the swing arm of the rotating bracket, and the clamping seat is fixed on the swing arm of the rotating bracket , A round sleeve is set on the screw of the wheel camber locking knob, the end of the screw is threadedly connected with the swing arm of the rotating bracket, and the round sleeve is placed in the long arc-shaped transparent chute processed on the arm of the fixed bracket , the upper end of the circular sleeve and the lower end of the camber adjusting screw screw screwed into the long arc-shaped transparent chute are connected in a dynamic fit.

The thrust angle inspection part is mainly composed of a thrust angle calibration, a thrust angle vernier, a thrust angle locking handle, a thrust angle handwheel, a lead screw, a lead screw nut and a lead screw support.

The thrust angle locking handle for locking the upper and lower table passes through the long arc-shaped transparent chute processed on the upper table and is threadedly connected with the lower table. The tight handle is arranged in a diagonal line, one end of the lead screw is installed in the lead screw nut, the other end of the lead screw is equipped with a bracket and a thrust angle handwheel, the through hole on one end of the bracket is dynamically matched with the lead screw, and the bracket The other end of the upper plate is fixed on the lower platen, the thrust angle calibration is installed on the end face of the lower platen, and the thrust angle vernier is installed on the end face of the upper platen above the thrust angle calibration.

The beneficial effects of the utility model are:

(1) The utility model adopts two high-precision angle measuring devices (such as mechanical indexing head, optical indexing head, rotary table for machine tools, jack-type rotary indexing device, etc., the following is an example of indexing head) Measure kingpin inclination and kingpin caster. First of all, because the dividing head is a commonly used instrument, no additional processing is required, and it can meet the requirements of mass production; secondly, because the dividing head has the characteristics of convenient angle adjustment, it can be adjusted according to the caster angle and inclination angle of the kingpin during the verification. It is required to adjust to any angle within the range specified by the Ministry of Communications standards. Third, because the dividing head has the function of precise angle measurement, the scale ring and vernier on the main shaft can be used for arbitrary indexing, and the minimum indication value of the vernier can reach 10", which can fully meet the "Ministry of Communications Industry Standard JT/T505-- 2004" on the calibration accuracy requirements.

(2) The curved guide rail of the utility model no longer has the function of a scale scale, but only retains the function of driving the simulated kingpin to move. On the one hand, it reduces the precision requirements for processing the arc-shaped guide rail, and on the other hand, it effectively prevents the wear and tear on the scale of the instrument after a long period of use.

(3) This utility model aims at the problem that the transmission chain of the existing calibration device is long, the motion state is complicated, the cumulative error is large, and the accuracy is affected. The utility model adopts a unequal angular displacement transmission mechanism to transmit The power between them simplifies the structure of the calibration device.

(4) According to the actual situation of the four-wheel aligner sensor, the utility model adopts the self-centering chuck instead of the wheel simulation disc to directly clamp the sensor, which eliminates the error of the clamping fixture and improves the measurement accuracy.

(5) The utility model uses the dividing head to complete the measurement of the wheel camber and kingpin inclination, cancels the separate wheel camber measurement mechanism, and simplifies the structure.

(6) The utility model has increased the function of checking thrust angle and steering angle.

(7) The utility model adopts a spherical hinge to determine the angle adjustment center of the kingpin, and uses two arc-shaped guide rails that are perpendicular to each other and concentric with the angle adjustment center to realize the independent and unrelated adjustment of the four-wheel aligner on the longitudinal plane and the horizontal plane of the vehicle Angle, to carry out detection and calibration work, to eliminate the theoretical error of the original device, improve the accuracy of the test. It has excellent application prospect.

(8) The utility model realizes the function of simulating various positioning angles of the wheels, and the size of the simulating wheel positioning angles can be directly read out, and the accuracy of the inspection device is higher than that of the four-wheel aligner itself, which can meet the requirements of manufacturers and the country. The quality inspection of the four-wheel aligner by the quality supervision department.

Description of drawings

Figure 1-a is a top view of the structural assembly diagram of the front axle inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner in the vertical and horizontal planes of the automobile;

Figure 1-b is a top view of the structural assembly diagram of the rear axle inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner on the vertical and horizontal planes of the automobile;

Figure 2-a is a top view of the structural assembly diagram of the front axle inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner in the vertical and horizontal planes of the automobile;

Figure 2-b is a left view of the structural assembly diagram of the front axle inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner on the vertical and horizontal planes of the automobile;

Figure 3-a is a top view of the structural assembly diagram of the rear axle inspection part in the verification device of the car vertical and horizontal plane unrelated angle-adjusting four-wheel aligner;

Fig. 3-b is a left view of the structural assembly diagram of the rear axle inspection part in the verification device of the car vertical and horizontal plane unrelated angle-adjusting four-wheel aligner;

Fig. 4 is a schematic diagram of the structure of the front wheel inspection part of the verification device of the four-wheel aligner of the vertical and horizontal planes without correlation angle adjustment;

Fig. 5 is a structural principle diagram of the rear wheel inspection part of the verification device of the four-wheel aligner with no correlation in the vertical and horizontal planes;

Figure 6-a is an axonometric projection view of the front axle inspection part of the verification device of the unrelated angle-adjusting four-wheel aligner in the vertical and horizontal planes of the vehicle viewed from the front;

Figure 6-b is an axonometric projection view of the rear axle inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner in the vertical and horizontal planes of the vehicle viewed from the front;

Fig. 7 is an axonometric projection view of the structural assembly of the thrust angle inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner in the vertical and horizontal planes of the automobile viewed from the front;

Fig. 8 is an axonometric projection view of the structural assembly of the front wheel inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner in the vertical and horizontal planes of the automobile;

Fig. 9 is an axonometric projection view of the structural assembly of the front wheel inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner on the vertical and horizontal planes of the automobile viewed from the chuck;

Fig. 10 is an axonometric projection view of the structural assembly viewed from the front after removing the spherical guide rail, the upper guide block, and the lower guide block from the front wheel inspection part of the verification device of the vehicle vertical and horizontal plane unrelated angle-adjusting four-wheel aligner;

Fig. 11 is an axonometric projection view of the structural assembly of the rear wheel inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner in the vertical and horizontal planes of the automobile;

Fig. 12 is an axonometric projection view of the structural assembly of the rear wheel inspection part in the verification device of the unrelated angle-adjusting four-wheel aligner on the vertical and horizontal planes of the automobile viewed from the rear;

In the figure: 1. Front axle inspection part, 2. Rear axle inspection part, 3. Front wheel inspection part, 4. Front panel, 5. Rack, 6. Upper table, 7. Rear wheel inspection part, 8. Thrust angle Rotary shaft, 9. Lower platen, 10. Thrust angle calibration, 11. Thrust angle vernier, 12. Horizontal turntable, 13. Lower steering fork, 14. Cross shaft, 15. Upper steering fork, 16. V-shaped block, 17 .chuck, 18. chuck shaft, 19. spherical guideway, 20. analog kingpin, 21. kingpin inclination angle guideway, 22. kingpin inclination angle dividing head, 23. kingpin caster angle guideway, 24. main Pin caster indexing head, 25. Fixed bracket, 26. Rotating bracket, 27. Camber calibration, 28. Camber vernier, 29. Wheel camber adjustment knob, 30. Thrust angle inspection part, 31. Thrust angle lock Tight handle, 32. Thrust angle handwheel, 33. V-shaped block guide rail, 34. Spherical clamping handle, 35. Spherical pressure plate, 36. Long blister, 37. Kingpin inclination guide rail locking knob, 38. Round blister , 39. Clamping seat, 40. Kingpin caster angle guide rail locking knob, 41. Clamping seat knob, 42. Lower guide block, 43. Upper guide block, 44. Chuck backrest, 45. Adjusting pad, 46. Camber locking knob, 47. camber rotating shaft, 48. camber adjustment screw, 49. leading screw, 50. leading screw nut, 51. leading screw support.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Referring to Fig. 1 to Fig. 12, the inspection device of the four-wheel aligner of the car vertical and horizontal planes without correlation angle adjustment is composed of a front axle inspection part 1 and a rear axle inspection part 2. The front axle inspection part 1 completes the inspection of the front wheel alignment parameters, and the rear axle inspection part 2 completes the inspection of the rear wheel alignment parameters and thrust angle. The device has four mutually independent wheel alignment angle inspection parts; it has two completely independent kingpin inclination index adjustment mechanisms with coordinates. The simulated kingpin 20 of the kingpin inclination adjustment mechanism moves with the kingpin inclination guide rail 21, and the kingpin inclination guide rail 21 is fixedly connected to the kingpin inclination angle indexing head 22, and the kingpin inclination angle indexing head 22 can make the simulated main pin inclination angle indexing head 22 move. The projection of the pin in the xoz plane rotates around the y-axis, and the angle of rotation is read from the scale of the kingpin inclination indexing head. The simulated kingpin 20 of the kingpin caster angle adjustment mechanism moves with the kingpin caster angle guide rail 23, and the kingpin caster angle guide rail 23 is fixedly connected to the kingpin caster angle indexing head 24, and the kingpin caster angle indexing head 24 can make the simulated main pin caster angle indexing head 24 move. The pin can rotate around the x-axis in the yoz plane, and the rotation angle can be read from the scale of the master pin caster angle indexing head.

The front axle inspection part 1 is mainly composed of a front wheel inspection part 3 , a front panel 4 and a frame 5 . The frame 5 is a frame structure, which can be welded with section steel and steel plate, or can be welded after casting or connected with connectors after casting. The front panel 4 is a flat cuboid, which can be welded with section steel and steel plate, or cast. The two ends of the front wheel inspection part 3 should be installed, so the two ends of the front panel 4 should be processed with a mounting plane and a T-shaped groove. The processed frame 5 is placed horizontally on the ground, the front panel 4 is installed on the frame 5, and the two processed and assembled front wheel inspection parts 3 are symmetrically installed on the processing plane at both ends of the front panel 4. The two front wheels The axes of rotation of the two chucks 17 in the inspection part 3 are to be collinear, and the two chucks 17 are to point outward.

The front wheel inspection part 3 is composed of an unequal angular displacement transmission mechanism, a positioning parameter adjustment mechanism, a mechanical interface and a level adjustment mechanism.

The unequal angular displacement transmission mechanism is mainly composed of a horizontal turntable 12 , a lower steering fork 13 , a cross shaft 14 , an upper steering fork 15 , a simulated kingpin 20 and an adjustment pad 45 .

First, two horizontal turntables 12 are fixed on the processing plane at both ends of the front panel 4 with screws. When installing, the axis of the worm shaft is perpendicular to the long side of the front panel 4, and the adjustment pad 45 is fixed on the horizontal rotary table with screws. On the rotating platform of platform 12, fix the lower steering fork 13 on the top of the adjustment pad 45 with screws, install the cross shaft 14 in the two holes on the lower steering fork 13 through two bearings, and then use the two bearings to fix the cross shaft 14 The two ends of another shaft are installed in the two holes on the upper steering fork 15, the bottom plane of the hemisphere at the lower end of the simulated kingpin 20 is fixedly connected with the upper steering fork 15, and the upper end of the simulated kingpin 20 is installed on the lower guide block through a bearing 42. For the inner hole of the upper guide block 43, the entire installation process should ensure that the rotation axis of the horizontal turntable 12 and the rotation axis of the simulated kingpin 20 should pass through (or intersect) the center of the cross shaft 14.

Described positioning parameter adjustment mechanism is mainly by kingpin inclination angle guide rail 21, kingpin inclination angle indexing head 22, kingpin caster angle guide rail 23, kingpin caster angle indexing head 24, kingpin inclination angle guide rail locking knob 37 , caster angle guide rail locking knob 40, lower guide block 42 and upper guide block 43 and other parts.

The kingpin inclination indexing head 22 and the kingpin caster angle indexing head 24 are fixed on the processing plane at both ends of the front panel 4 with screws. The space of the three rotary axes of the caster angle indexing head 24 intersects vertically on the center of the cross shaft 14, and the straight shank end of the kingpin caster angle guide rail 23 is fixed on the rotary table of the kingpin caster angle indexing head 24 with screws, and the king pin The straight shank end of the inclination angle guide rail 21 is fixed on the rotary table of kingpin inclination angle indexing head 22 with screw, the other end (arc guide rail end) of kingpin inclination angle guide rail 21 is placed on the concave of the other end of lower guide block 42. In the groove (the lower guide block 42 has the same structure as the upper guide block 43, both of which are composed of a cuboid processed with a through hole and a fork-shaped groove that is slidably connected to the kingpin inclination guide rail 21 and the kingpin caster angle guide rail 23) , and then install the kingpin inclination angle guide rail locking knob 37 with a pressure plate and screws, the arc side of the kingpin inclination angle guide rail 21 and the side wall of the groove at the other end of the lower guide block 42 are moving fit contact connection, rotate the kingpin The inclination guide rail locking knob 37 can realize the purpose of tightening or loosening the kingpin inclination guide rail 21 . Also place the other end (arc guide rail end) of the kingpin caster angle guide rail 23 in the groove at the other end of the upper guide block 43, then install the kingpin caster angle guide rail locking knob 40 with a pressure plate and screws, and the kingpin The arc-shaped side of caster guide rail 23 is connected with the side wall of the other end groove of upper guide block 43 in moving fit contact, and rotation caster guide rail locking knob 40 plays the purpose of tightening or unclamping kingpin caster guide rail 23 equally. In the installation process, it is necessary to ensure that the center of curvature of the arc surface of the kingpin caster guide rail 21 and the center of curvature of the arc surface of the kingpin caster angle guide rail 23 are located between the kingpin caster angle indexing head 24 and the kingpin caster angle indexing head respectively. 22 on the axis of rotation.

The mechanical interface and level adjustment mechanism are mainly composed of V-shaped block 16, chuck 17, chuck shaft 18, spherical guide rail 19, V-shaped block guide rail 33, spherical surface clamping handle 34, spherical surface pressure plate 35, long blister 36, Round blister 38, clamping seat 39, clamping seat knob 41 and chuck backrest 44 form.

Through the round hole on the spherical guide rail 19, the spherical guide rail 19 is set on the spherical body at the lower end of the simulated kingpin 20, so that the inner spherical surface of the spherical guide rail 19 is dynamically fitted and connected with the spherical surface of the spherical body at the lower end of the simulated kingpin 20, and then the spherical surface pressure plate 35. The spherical surface clamping handle 34 is sequentially set on the middle end of the simulated main pin 20, between the outer spherical surface of the spherical surface guide rail 19 and the inner wall of the spherical surface pressure plate 35, and between the outer wall of the spherical surface pressure plate 35 and the spherical surface clamping handle 34 are surface contact sliding connections . Above the spherical clamping handle 34, the upper end of the simulated kingpin 20 passes through the upper and lower guide blocks 42 and the upper guide block 43 in sequence, that is, the simulated kingpin 20 rotates in the through hole at one end of the lower guide block 42 and the upper guide block 43 connect. Two mutually perpendicular long blisters 36 are installed on the top of the upper guide block 43, and its effect is to adjust the device to be in a horizontal normal working condition before installing or using the device. The V-shaped block 16 is slidably installed on the slideway of the V-shaped block guide rail 33, and the V-shaped block guide rail 33 is fixed on the processing plane at both ends of the front panel 4 with screws, and is close to the end side, directly below the chuck 17 . The chuck 17 is fixedly connected to the chuck backrest 44 with screws, the chuck backrest 44 is sleeved on one end of the chuck shaft 18 through a pair of bearings, and the other end of the chuck shaft 18 is fixedly inserted into the connecting arm on one side of the outer spherical surface of the spherical guide rail 19. In the hole, that is, the hole of the chuck shaft 18 is fixedly connected with the spherical guide rail 19 outer spherical surface one side coupling arm. Can the clamping seat 39 of control chuck 17 rotate be fixed on the coupling arm of spherical guide rail 19 outer spherical surfaces, clamping seat knob 41 is installed on the clamping seat 39, can control whether chuck 17 rotates by rotating it. A circle blister 38 is installed directly above the coupling arm on one side of the spherical guide rail 19 outer spherical surfaces, and its purpose is to adjust the chuck 17 axis of rotation to be in a horizontal state. In the installation process, ensure that the center of rotation of the chuck 17 should pass through the center of the spherical guide rail 19, and the center of the spherical guide rail 19 should coincide with the center of the cross shaft 14.

After the installation of the front wheel inspection part 3 is completed, it is necessary to reach the center line of rotation of the kingpin caster angle indexing head 24, the center line of rotation of the kingpin inclination angle indexing head 22, the center line of rotation of the horizontal turntable 12, and the self-centering card. The centerline of revolution of disc 17 and the centerline of revolution (five centerlines of revolution) of analog kingpin 20 will intersect at the center of cross shaft 14 (the spherical center of spherical guideway 19 is concentric with cross shaft 14).

The rear axle inspection part 2 is mainly composed of a frame 5, an upper deck 6, a rear wheel inspection part 7, a thrust angle rotating shaft 8, a lower deck 9 and a thrust angle inspection part 30. Frame 5 is structurally the same as the frame used in front axle inspection part 1, and will not be repeated here. The upper deck 6 and the lower deck 9 are both flat cuboids, which can be cast or welded with section steel and steel plates. The difference between the upper deck 6 and the lower deck 9 is that a piece should be recessed at the end of the upper deck 6 , that is processed into a stepped shape (the thickness of the end is thinner than other parts), and a long strip arc-shaped transparent chute is machined transversely at the thin plate place, in order to install the thrust angle inspection part 30 here. The lower platen 9 is installed on the frame 5 placed horizontally on the ground, and the upper platen 6 is installed on the working plane of the lower platen 9 through the bearing and the thrust angle rotating shaft 8. The thrust angle rotating shaft 8 and the lower platen 9 are fixedly connected, and the upper platen 6. Under the action of external force, it can rotate a required angle around the thrust angle rotating shaft 8 relative to the bottom plate 9. The thrust angle inspection part 30 is installed at the thin plate at the end of the upper table 6, on the outside of one rear wheel inspection part 7, and the two rear wheel inspection parts 7 are symmetrically installed on the processing plane at both ends of the upper table 6, and the two rear wheel inspection The axes of rotation of the two chucks 17 in part 7 are to be collinear and the two chucks 17 are to point outwards.

The rear wheel inspection part 7 is mainly composed of a horizontal turntable 12, a chuck 17, a fixed bracket 25, a rotating bracket 26, a camber calibration 27, a camber cursor 28, a camber adjustment knob 29, a long blister 36, a clamping Seat 39, clamping seat knob 41, chuck backrest 44, wheel camber locking knob 46, wheel camber rotating shaft 47 and wheel camber adjustment screw rod 48 form.

First two horizontal turntables 12 are fixed on the processing plane at the two ends of the top plate 6 with screws, and the worm axis is perpendicular to the long side of the top plate 6 during installation. The bottom end of the fixed bracket 25 is fixed on the rotary platform of the horizontal turntable 12 with screws, and the wheel camber calibration 27 is fixed on the arc surface of the fixed bracket 25 tops. Fix the chuck 17 on the chuck backrest 44 with screws, the chuck backrest 44 is sleeved on one end of the chuck shaft 18 through a pair of bearings, and the other end of the chuck shaft 18 is fixedly inserted into the hole of the swing arm of the rotating bracket 26, That is, the other end of the chuck shaft 18 is fixedly connected with the hole of the swivel bracket 26 swing arms. The rotating bracket 26 is movably connected in the through hole of the fixed bracket 25 through the camber rotating shaft 47 , and the camber cursor 28 is fixed on the arc surface at the top of the rotating bracket 26 . Whether the clamping seat 39 of control chuck 17 rotations is fixed on the swing arm of rotating bracket 26, clamping seat knob 41 is installed on the clamping seat 39, can control whether chuck 17 rotates by rotating it. A round sleeve is set on the screw rod of the wheel camber locking knob 46, and the end of the screw rod is threadedly connected with the swing arm of the rotating bracket 26. In the groove, the upper end of the circular sleeve is rotatably connected with the lower end of the wheel camber adjusting screw 48 that is vertically packed into the elongated arc transparent chute, and the camber adjusting screw 48 is connected with the elongated arc of the fixed bracket 25 arms. Transparent chute is threaded connection, when rotating wheel camber adjusting screw rod 48 (that is, rotating wheel camber adjusting knob 29), wheel camber adjusting screw rod 48 can move up and down along strip arc transparent chute, when rotating During the camber adjustment knob 29, the camber adjustment screw rod 48 drives the screw rod of the circular sleeve and the camber locking knob 46 to move up and down, so that the rotating bracket 26 rotates around the camber rotating shaft 47 relative to the fixed bracket 25, that is, realizes the angle adjustment. A long blister 36 is installed directly above the swing arm of the rotating bracket 26, so that the axis of rotation of the chuck 17 is adjusted in a horizontal normal working condition before using the device.

The thrust angle inspection part 30 is mainly composed of a thrust angle calibration 10 , a thrust angle vernier 11 , a thrust angle locking handle 31 , a thrust angle handwheel 32 , a lead screw 49 , a lead screw nut 50 and a lead screw support 51 .

The thrust angle locking handle 31 that locks the upper and lower decks passes through the long arc-shaped transparent chute processed on the upper deck 6 and is threadedly connected with the lower deck 9, and the upper deck 6 and the lower deck can be realized by rotating the thrust angle locking handle 31. 9 between locking and loosening. Lead screw nut 50 is mounted on the end of upper platen 6 in moving fit, and it is arranged obliquely with thrust angle locking handle 31. The through hole on the following briquetting block is clearance fit (leading screw 49 also can not pass through the through hole on the briquetting block below the thrust angle locking handle 31, promptly does not adopt the structure that briquetting block is arranged below the thrust angle locking handle 31, And adopt one end of leading screw 49 to pack among the leading screw nut 50, the other end of leading screw 49 is equipped with a support 51 and a thrust angle handwheel 32, the through hole on the support 51 one end and leading screw 49 move fit connection, The other end of the bracket 51 is fixed on the structure of the lower deck 9, and the thrust angle hand wheel 32 can be turned to realize that the upper deck 6 rotates around the thrust angle rotating shaft 8 on the working plane of the lower deck 9), and the thrust angle locking handle 31 is connected with the pressing The other through hole of the block is also a clearance fit, all of which are non-threaded connections. The lead screw 49 and the lead screw nut 50 constitute a transmission pair for transmitting motion. The other end of the lead screw 49 is equipped with a bracket 51 and a thrust angle handwheel 32 , The through hole on one end of the support is connected with the leading screw 49 in a dynamic fit, and the other end of the support 51 is fixed on the lower platen 9 . Turning the thrust angle hand wheel 32 can realize that the upper platen 6 rotates on the working plane of the lower platen 9 around the thrust angle rotating shaft 8 . The thrust angle calibration 10 is installed on the end face of the lower deck 9 , and the thrust angle vernier 11 is installed on the end face of the upper deck 6 above the thrust angle calibration 10 . The angle value of the rotation of the upper platen 6 can be read by the relative position between the thrust angle calibration 10 and the thrust angle vernier 11 .

The working principle and operation method of the verification device of the vertical and horizontal plane unrelated angle-adjusting four-wheel aligner:

The inspection device of the four-wheel aligner of the car vertical and horizontal plane unrelated angle adjustment is composed of a front axle inspection part 1 and a rear axle inspection part 2. Before use, adjust the parallel distance between the front axle inspection part 1 and the rear axle inspection part 2 to be the wheelbase of the detected car; adjust the front axle inspection part 1 and the rear axle inspection part 2 to be in a horizontal and normal working state.

1. Working principle and operation method of front wheel camber inspection

First, place the V-shaped block 16 directly under the chuck 17, loosen the spherical clamping handle 34, place the chuck 17 on the V-shaped block 16, and clamp the sensor measuring head on the four-wheel aligner to the chuck 17, make the chuck 17 in a horizontal state (the zeroing step before the inspection device is used). Then lock the spherical surface clamping handle 34, so that relative motion can not be produced between the spherical surface guide rail 19 and the upper steering fork 15, and the V-shaped block 16 is removed.

Then, loosen the caster angle guide locking knob 40 . Turn the handle of the kingpin inclination indexing head 22, turn the kingpin inclination angle guide rail 21 fixedly connected to the kingpin inclination indexing head 22 clockwise or counterclockwise by a certain angle, and record the kingpin inclination angle indexing The number of angles that the kingpin inclination angle guide rail 21 on the head 22 has turned from the original vertical position to the position after turning a certain angle (readable from the dial on the kingpin inclination angle indexing head 22), this angle The number is the camber angle of the wheel. By comparing the wheel camber with the camber measured by the existing four-wheel aligner, the wheel camber measured by the existing four-wheel aligner can be calibrated.

2. The working principle and operation method of front wheel toe angle and wheel angle inspection

First, place the V-shaped block 16 directly under the chuck 17, loosen the spherical clamping handle 34, place the chuck 17 on the V-shaped block 16, and clamp the sensor measuring head on the four-wheel aligner to the chuck 17, make the chuck 17 in a horizontal state (the zeroing step before the inspection device is used). Then lock the spherical surface clamping handle 34, so that relative motion can not be produced between the spherical surface guide rail 19 and the upper steering fork 15, and the V-shaped block 16 is removed.

Then, by rotating the horizontal turntable 12, the chuck 17 is rotated clockwise or counterclockwise by a certain angle in the horizontal plane, and the angle rotated by the rotary table surface of the horizontal turntable 12 from the initial zero position to the position rotated by a certain angle is recorded. Number (can read from the dial on the horizontal turntable 12), this angle number is the front wheel toe angle. By comparing the front wheel toe angle with the front wheel toe angle measured by the existing four-wheel aligner, the front wheel toe angle of the existing four-wheel aligner can be calibrated.

Third, by rotating the horizontal turntable 12, the chuck 17 is rotated clockwise or counterclockwise by a certain angle in the horizontal plane, and the rotation of the rotary table of the horizontal turntable 12 is recorded from the initial zero position to the position after the rotation by a certain angle. Angle number (readable from the dial on the horizontal turntable 12), this angle number is the front wheel wheel angle. By comparing the front wheel rotation angle with the front wheel rotation angle measured by the existing four-wheel aligner, the front wheel rotation angle of the existing four-wheel aligner can be calibrated.

3. The working principle and operation method of the kingpin inclination and caster angle inspection of the front wheel

First, place the V-shaped block 16 directly under the chuck 17, loosen the spherical clamping handle 34, place the chuck 17 on the V-shaped block 16, and clamp the sensor measuring head on the four-wheel aligner to the chuck 17, make the chuck 17 in a horizontal state (the zeroing step before the inspection device is used).

Then, unclamp the kingpin inclination angle guide rail locking knob 37, the kingpin caster angle guide rail locking knob 40, rotate the kingpin inclination angle indexing head 22 to make the kingpin inclination angle guide rail fixedly connected on the indexing head 22 rotary tables 21 rotate a certain angle, read the number of angles that the kingpin inclination guide rail 21 has turned on the kingpin inclination angle indexing head 22, which is the front wheel kingpin inclination angle; then rotate the kingpin caster angle indexing head 24 to make The kingpin caster angle guide rail 23 that is fixedly connected on the indexing head 24 rotary tables rotates a certain angle, read the number of angles that the kingpin caster angle guide rail 23 has turned on the kingpin caster angle indexing head 24, that is, the front wheel kingpin caster angle.

Third, lock the kingpin inclination guideway locking knob 37, the kingpin caster guideway locking knob 40, and the spherical surface clamping handle 34 so that no relative movement can occur between the spherical surface guideway 19 and the upper steering fork 15, and the V Block 16.

Fourth, by rotating the horizontal turntable 12, the chuck 17 is rotated clockwise or counterclockwise by a certain angle around the simulated main pin 20, and the rotating table surface of the horizontal turntable 12 is rotated from the initial zero position (from the horizontal turntable 12 It can be read on the dial on the wheel) It is determined according to the requirements of the four-wheel alignment manual. Comparing the caster angle and inclination angle of the front wheel with the caster angle and inclination angle measured by the existing four-wheel aligner, the caster angle and the inclination angle of the existing four-wheel aligner can be compared. The inclination angle of the pin is calibrated.

4. The working principle and operation method of rear wheel camber inspection

Clamp the sensor measuring head on the four-wheel aligner to the chuck 17, loosen the camber locking knob 46, and rotate the camber adjustment knob 29, so that the camber cursor 28 is relative to the outside of the wheel around the camber rotation axis 47. Tilt calibration mark 27 rotates certain angle, locking wheel camber locking knob 46, the angle read from wheel camber vernier 28 and wheel camber calibration mark 27 is rear wheel camber. By comparing the rear wheel camber with the rear wheel camber measured by the existing four-wheel aligner, the rear wheel camber of the existing four-wheel aligner can be calibrated.

5. The working principle and operation method of rear wheel toe angle inspection

Clamp the sensor measuring head on the four-wheel aligner on the chuck 17, and then rotate the horizontal turntable 12 to make the chuck 17 rotate clockwise or counterclockwise at a certain angle in the horizontal plane, and record the rotation table of the horizontal turntable 12 From the initial zero position to the number of angles (readable from the dial on the horizontal turntable 12) turned to the position after a certain angle of rotation, this number of angles is the rear wheel toe angle. By comparing the rear wheel toe angle with the rear wheel toe angle measured by the existing four-wheel aligner, the rear wheel toe angle of the existing four-wheel aligner can be calibrated.

6. The working principle and operation method of rear axle thrust angle inspection

Clamp the sensor measuring head on the four-wheel aligner on the chuck 17, loosen the thrust angle locking handle 31, turn the thrust angle handwheel 32, and push the screw 49 fixedly connected to the thrust angle handwheel 32 to push the upper platen 6 to face The lower platen 9 rotates a certain angle around the thrust angle rotating shaft 8, which can be read from the relative position between the thrust angle calibration 10 and the thrust angle vernier 11, and the angle of rotation is exactly the thrust angle of the rear axle. By comparing it with the indicated value of the existing four-wheel aligner, the thrust angle of the existing four-wheel aligner can be calibrated.

The verification device of the unrelated angle-adjusting four-wheel aligner on the vertical and horizontal planes of automobiles is used to verify the results of the toe-in and camber angles of the wheels detected by the existing four-wheel aligner:

The toe angle and camber angle of the three four-wheel aligners A, B, and C are verified respectively. The verification results of the toe angle are shown in Tables 1-3, and the verification results of the camber angle are shown in Tables 4-6. It can be seen from the data that the linearity of the toe angle and camber angle measured by the three four-wheel aligners is good, but the zero points are all biased. Since it is stipulated in the standard that the indication error range of the toe angle is ±2' when it is ±2°, the indication error range of the camber angle is ±2' when it is ±4°. Obviously, only the toe angle results of the four-wheel aligner B meet the standard requirements.

Table 1 Test data of the toe angle of the front left wheel of the four-wheel aligner A

Table 2 Test data of the toe angle of the front left wheel of the four-wheel aligner B

Table 3 Test data of the toe angle of the front left wheel of the four-wheel aligner C

Table 4 Test data of front left wheel camber angle of four-wheel aligner A

Table 5 Test data of front left wheel camber angle of four-wheel aligner B

Table 6 Test data of front left wheel camber angle of four-wheel aligner C

Kingpin caster angle and kingpin inclination test results

See Tables 7-9 for the verification results of the caster angle of the kingpin. See Tables 10-12 for the verification results of the kingpin inclination angle. It can be seen from the data that one of the inclination angle errors of Type A, Type B, and Type C among the three four-wheel aligners increases with the increase of the other kingpin inclination angle, but since Type B adopts a simplified linear model, The error is larger than Type A and Type C. Since the indication error range of the kingpin caster angle verification specified in the standard should be ±6′ within ±12°, and ±10′ within the rest range, the accuracy within the range of 0～+18 is ±6′, and the accuracy of the rest range is ±6′. ±10′. Obviously, only Type A and Type C can meet the standard requirements for the verification results of the kingpin inclination angle. At the same time, there is also a zero-point error in the measurement of the kingpin inclination.

Table 7 Four-wheel aligner A front left wheel kingpin caster test data

Table 8 Caster test data of front left wheel kingpin of four-wheel aligner B

Table 9 Four-wheel aligner C front left wheel kingpin caster test data

Table 10 Four-wheel aligner A front left wheel kingpin inclination test data

Table 11 Test data of front left kingpin inclination of four-wheel aligner B

Table 12 Four-wheel aligner C front left wheel kingpin inclination test data

Claims (3)

1. A verification device of an independent angle-adjusting type four-wheel aligner in the vertical and horizontal planes of automobiles, characterized in that, the verification device of the non-associated angle-adjustment type four-wheel aligner in the vertical and horizontal planes of automobiles is placed horizontally on the ground The front axle inspection part (1) and the rear axle inspection part (2) are composed, and the parallel distance between the front axle inspection part (1) and the rear axle inspection part (2) is the wheelbase of the car to be tested; The front axle inspection part (1) is mainly composed of the front wheel inspection part (3), the front panel (4) and the frame (5), the frame (5) is placed horizontally on the ground, and the front panel (4) is installed On the frame (5), two front wheel inspection parts (3) are symmetrically installed on the processing plane at both ends of the front panel (4), and the two chucks (17) in the two front wheel inspection parts (3) ) will be collinear, and the two chucks (17) will point to the outside; Described rear axle inspection part (2) is mainly made of frame (5), upper deck (6), rear wheel inspection part (7), thrust angle rotating shaft (8), lower deck (9) and thrust angle inspection part ( 30), the lower deck (9) is installed on the top of the frame (5) placed horizontally on the ground, and the upper deck (6) is installed on the working plane of the lower deck (9) through the dynamic fit of the thrust angle rotating shaft (8) , the thrust angle test part (30) is installed on the end of the upper plate (6), the outer side of a rear wheel test part (7), and the two rear wheel test parts (7) are symmetrically installed on the two ends of the upper plate (6) On the machining plane, the axes of revolution of the two chucks (17) in the two rear wheel inspection parts (7) will be collinear, and the two chucks (17) will point to the outside. 2. according to the verification device of the automobile vertical and horizontal plane non-associated angle-adjusting type four-wheel aligner according to claim 1, it is characterized in that, the described front wheel inspection part (3) is by unequal angular displacement transmission mechanism, positioning parameters The adjustment mechanism is composed of mechanical interface and horizontal adjustment mechanism; The unequal angular displacement transmission mechanism is mainly composed of a horizontal turntable (12), a lower steering fork (13), a cross shaft (14), an upper steering fork (15), a simulated kingpin (20) and an adjustment pad (45) composition; The horizontal turntable (12) is fixed on the processing plane at both ends of the front panel (4), so that the axis of the worm is perpendicular to the long side of the front panel (4), and the adjustment pad (45) is fixed on the horizontal turntable (12). On the rotary table, the lower steering fork (13) is fixed on the adjustment pad (45), and the cross shaft (14) connects the lower steering fork (13) and the upper steering fork (15) in rotation, simulating the hemisphere at the lower end of the kingpin (20) The bottom plane of the body is fixedly connected with the upper steering fork (15), and the axis of rotation of the horizontal turntable (12) and the axis of rotation of the analog kingpin (20) should pass through the center of the cross shaft (14); Described positioning parameter adjustment mechanism is mainly by kingpin inclination angle guide rail (21), kingpin inclination angle indexing head (22), kingpin caster angle guide rail (23), kingpin caster angle indexing head (24), lower Guide block (42) is formed with upper guide block (43); The kingpin inclination indexing head (22) and the kingpin caster angle indexing head (24) are fixed on the processing plane at both ends of the front panel (4), and the horizontal rotary table (12), kingpin inclination indexing head (22 ) and the three rotation axes of the kingpin caster angle indexing head (24) are vertically intersected at the center of the cross axis (14), and the kingpin inclination angle guide rail (21) is fixed on the center of the kingpin inclination angle indexing head (22). On the rotary table, the kingpin caster guide rail (23) is fixed on the rotary table of the kingpin caster angle indexing head (24), and the arc side of the kingpin caster angle guide rail (21) is connected with the other end of the lower guide block (42). The side wall of the groove is a moving fit contact connection, the arc side of the kingpin caster angle guide rail (23) and the side wall of the other end groove of the upper guide block (43) are moving fit contact connection, the kingpin inclination angle guide rail (21) The center of curvature of the arc surface and the center of curvature of the arc surface of the kingpin caster angle guide rail (23) are respectively on the axis of rotation of the kingpin caster angle indexing head (24) and the kingpin inclination angle indexing head (22); Described mechanical interface and level adjustment mechanism are mainly composed of V-shaped block (16), chuck (17), chuck shaft (18), spherical guide rail (19), V-shaped block guide rail (33), spherical surface clamping handle ( 34), spherical pressure plate (35), clamping seat (39), lower guide block (42), upper guide block (43) and chuck backrest (44); Through the round hole on the spherical guide rail (19), the spherical guide rail (19) is set on the spherical body at the lower end of the simulated kingpin (20), and the inner spherical surface of the spherical guide rail (19) is in dynamic fit contact with the spherical surface at the lower end of the simulated kingpin (20). Then the spherical pressure plate (35) and the spherical clamping handle (34) are sequentially set on the simulated kingpin (20), between the outer spherical surface of the spherical guide rail (19) and the inner wall of the spherical pressure plate (35), the spherical pressure The outer wall of the disk (35) and the spherical surface clamping handle (34) are connected by surface contact and sliding, and the upper end of the simulated kingpin (20) is sequentially loaded into the through hole at one end of the lower guide block (42) and the upper guide block (43). The V-shaped block (16) is slidably installed on the slideway of the V-shaped block guide rail (33), and the V-shaped block guide rail (33) is fixed on the processing plane at the two ends of the front panel (4) near the end side, and the chuck (17 ) is fixedly connected on the chuck backrest (44), and the chuck backrest (44) is movably fitted on one end of the chuck shaft (18), and the other end of the chuck shaft (18) is fixedly inserted into the outer spherical surface of the spherical guide rail (19). In the hole of the side connecting arm, the clamping seat (39) that controls whether the chuck (17) can rotate is fixed on the connecting arm on the outer spherical side of the spherical guide rail (19), and the rotation axis of the chuck (17) should pass through the spherical surface. The center of sphere of guide rail (19), the center of sphere of spherical guide rail (19) should coincide with the center of cross shaft (14). 3. according to the verification device of the automobile vertical and horizontal plane non-associated angle-adjusting type four-wheel aligner according to claim 1 or 2, it is characterized in that, the described rear wheel inspection part (7) is mainly composed of a horizontal turntable (12), Chuck (17), fixed bracket (25), rotating bracket (26), wheel camber calibration (27), wheel camber vernier (28), clamping seat (39), chuck backrest (44), wheel The camber rotating shaft (47) is composed of the wheel camber adjusting screw rod (48); The horizontal turntable (12) is fixed on the processing plane at the two ends of the top plate (6), so that the worm axis of the belt is perpendicular to the long side of the top plate (6), and the bottom end of the fixed support (25) is fixed on the horizontal turntable ( 12) on the rotating platform, the wheel camber calibration (27) is fixed on the top arc surface of the fixed bracket (25), and the rotating bracket (26) is dynamically connected to the fixed bracket (25) through the wheel camber shaft (47). , the camber vernier (28) of the wheel is fixed on the arc surface at the top of the rotating bracket (26), the chuck (17) is fixed on the chuck backrest (44), and the chuck backrest (44) is dynamically fitted on the chuck shaft ( 18), the other end of the chuck shaft (18) is fixedly inserted into the hole of the swing arm of the swivel bracket (26), the clamping seat (39) is fixed on the swing arm of the swivel bracket (26), and the wheel camber lock A round sleeve is set on the screw rod of the tight knob (46), and the end of the screw rod is threadedly connected with the swing arm of the rotating bracket (26), and the round sleeve is in the elongated arc-shaped channel processed on the support arm of the fixed bracket (25). In the see-through chute, the upper end of the circular sleeve is connected with the lower end of the wheel camber adjusting screw (48) screwed into the elongated arc-shaped see-through chute for dynamic fit; Described thrust angle inspection part (30) is mainly by thrust angle calibration (10), thrust angle vernier (11), thrust angle locking handle (31), thrust angle handwheel (32), leading screw (49), Leading screw nut (50) and leading screw support (51) are formed; The thrust angle locking handle (31) that locks the upper and lower decks passes through the long arc-shaped transparent chute processed on the upper deck (6) and is threadedly connected with the lower deck (9), and the lead screw nut (50) is installed in a dynamic fit At the end of the upper plate (6), it is arranged obliquely and straightly with the thrust angle locking handle (31), and one end of the lead screw (49) is put into the lead screw nut (50), and the other end of the lead screw (49) One end is equipped with a bracket (51) and a thrust angle handwheel (32), the through hole on one end of the bracket is connected with the lead screw (49) with a moving fit, and the other end of the bracket (51) is fixed on the bottom plate (9) , the thrust angle calibration (10) is installed on the end face of the lower deck (9), and the thrust angle vernier (11) is installed on the end face of the upper deck (6) above the thrust angle calibration (10).

Images