Wheel track measuring tool

Abstract

The utility model discloses a wheel track measurement frock relates to measuring technical field. It includes measurement subassembly and auxiliary assembly, wherein, measurement subassembly includes first pedestal, first support, mounting seat and laser range finder, and first pedestal has seted up first sliding rail along first direction, and first support is connected with first sliding rail slidingly, and mounting seat is installed in the one end of first support away from first pedestal, and laser range finder is installed in mounting seat, and auxiliary assembly includes second pedestal, second support and reflector plate, and second pedestal has seted up second sliding rail along first direction, and second support is connected with second sliding rail slidingly, and reflector plate is connected with second support, and reflector plate is used for reflecting the laser beam that laser range finder emits, and first pedestal is equipped with the first scale rule of extending along first direction, and second pedestal is equipped with the second scale rule of extending along first direction. This wheel track measurement frock can measure wheel track without enlarging tire, improves precision and efficiency, simplifies operation step, and saves manual cost.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, and in particular to a wheel track measuring fixture. Background Technology

[0002] Before a vehicle rolls off the production line, its outer contour needs to be measured. When measuring the wheelbase, the tires are typically imprinted on a thin film, the tire tread is used to draw the tire's centerline, and then a ruler is used to measure the wheelbase. This measurement method is susceptible to errors due to the quality of the imprint and the accuracy of the tire centerline drawing. Furthermore, it requires at least two people working together, resulting in low efficiency and high labor costs. Utility Model Content

[0003] The main purpose of this utility model is to propose a wheel track measurement fixture, which aims to solve the technical problems of large measurement errors and high labor costs in the current vehicle wheel track measurement process.

[0004] To achieve the above objectives, this utility model proposes a wheel track measuring fixture, comprising: The measuring component includes a first base, a first bracket, a mounting base, and a laser rangefinder. The first base has a first slide rail along a first direction. The first bracket is slidably connected to the first slide rail. The mounting base is installed at the end of the first bracket away from the first base. The laser rangefinder is installed on the mounting base. The auxiliary component includes a second base, a second bracket, and a reflector. The second base is provided with a second slide rail along the first direction. The second bracket is slidably connected to the second slide rail. The reflector is connected to the second bracket and is used to reflect the laser beam emitted by the laser rangefinder. The first base is provided with a first scale extending along the first direction, and the second base is provided with a second scale extending along the first direction.

[0005] In one embodiment, the wheel track measuring fixture is used to detect the wheel track between two tires on the front or rear side of a vehicle. The first base has a first limiting arc surface, and the second base has a second limiting arc surface. Both the first limiting arc surface and the second limiting arc surface are used to fit against the surface of the tire.

[0006] In one embodiment, the first bracket includes a first slider that is slidably connected to the first slide rail, and the mounting base is horizontally mounted on the top of the first slider; The second bracket includes a second slider that is slidably connected to the second slide rail, and the reflector is vertically mounted on the second slider.

[0007] In one embodiment, the first bracket includes a first slider, a mother rod, a son rod, and a first fixing knob. The first slider is slidably connected to the first slide rail. The mother rod is vertically mounted on the top of the first slider. The mother rod has a sliding cavity extending in the vertical direction. The son rod extends into the sliding cavity and is slidably connected to the mother rod. The mounting base is mounted on the top of the son rod. The first fixing knob passes through the mother rod and is threadedly connected to the son rod. The first fixing knob is used to restrict the sliding of the son rod. The reflector has at least two reflective zones along the vertical direction on the side facing the first base.

[0008] In one embodiment, the second bracket includes a second slider, a vertical rod, a sub-slider, and a second fixing knob. The second slider is slidably connected to the second slide rail. The vertical rod is vertically installed at the top of the second slider. The vertical rod has a guide groove extending along the vertical direction. The sub-slider is slidably connected to the guide groove. The reflector is installed on the side of the sub-slider facing the first base. The second fixing knob is threadedly connected to the sub-slider and is used to restrict the sliding of the sub-slider.

[0009] In one embodiment, the mounting base includes a base plate, a baffle, and two clamps. The base plate is mounted on the top of the first bracket. The baffle and the two clamps are both mounted on the side of the base plate away from the first base and enclose a clamping space. The laser rangefinder is at least partially housed in the clamping space. The laser rangefinder includes a detection end and a tail end, the tail end abutting against the baffle. The detection end is used to emit the laser beam. The two clamps are spaced apart and are respectively used to abut against the two sides of the laser rangefinder.

[0010] In one embodiment, the clamp has at least one oblong hole, the length direction of which is parallel to any horizontal plane and perpendicular to the first direction, and the base plate has a fixing hole corresponding to the oblong hole, the oblong hole being bolted to the fixing hole.

[0011] In one embodiment, the first base and the second base are integrally formed, and the first slide rail and the second slide rail overlap.

[0012] In one embodiment, the wheel track measuring fixture further includes a processor, which is communicatively connected to the laser rangefinder and is used to receive distance information detected by the laser rangefinder.

[0013] In one embodiment, the bottom of the first base is equipped with at least three leveling feet, and the top surface of the mounting base is equipped with a spirit level.

[0014] According to the technical solution of this utility model, the wheel track measuring fixture includes a measuring component and an auxiliary component. The measuring component includes a first base, a first bracket, a mounting base, and a laser rangefinder. The first base has a first slide rail along a first direction, the first bracket is slidably connected to the first slide rail, the mounting base is installed at the end of the first bracket away from the first base, and the laser rangefinder is installed on the mounting base. The auxiliary component includes a second base, a second bracket, and a reflector. The second base has a second slide rail along the first direction, the second bracket is slidably connected to the second slide rail, and the reflector is connected to the second bracket. The reflector is used to reflect the laser beam emitted by the laser rangefinder. The first base has a first scale extending along the first direction, and the second base has a second scale extending along the first direction. With this setup, when measuring the wheelbase of a vehicle, the first and second mounting plates are positioned to contact one tire respectively. The tire width is read using the first and second scales, and the position of the tire's centerline is calculated. Then, the laser rangefinder is moved along the first slide rail to the position corresponding to one tire's centerline, and the reflector is moved along the second slide rail to the position corresponding to the other tire's centerline. Activating the laser rangefinder then acquires the vehicle's wheelbase information. This eliminates the need to trace the tire tread pattern, thus avoiding tracing errors and errors in drawing the tire centerline, and eliminating reading errors from ruler measurements, thereby improving the accuracy of wheelbase detection. Furthermore, by eliminating tracing steps, the wheelbase measurement process is simple and efficient, requiring only one person to operate, which improves measurement efficiency and reduces labor costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of an embodiment of the wheel track measuring fixture provided by this utility model; Figure 2 for Figure 1 Schematic diagram of the structure of the measurement component; Figure 3 for Figure 1 A schematic diagram of the structure of the auxiliary components; Figure 4 This is a schematic diagram of another embodiment of the wheel track measuring fixture provided by this utility model.

[0017] Explanation of icon numbers: 1. Measuring assembly; 11. First base; 111. First slide rail; 112. First scale; 113. First limiting arc surface; 12. First bracket; 121. First slider; 122. Mother rod; 123. Daughter rod; 124. First fixing knob; 13. Mounting base; 131. Base plate; 132. Baffle; 133. Clamp; 1331. Oblong hole; 14. Laser rangefinder; 141. Detection end; 142. Tail end; 2. Auxiliary components; 21. Second base; 211. Second slide rail; 212. Second scale; 213. Second limiting arc surface; 22. Second bracket; 221. Second slider; 222. Upright rod; 2221. Guide groove; 223. Second fixing knob; 23. Reflector; X, the first direction; Y, the vertical direction.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] In the automotive manufacturing process, after a vehicle completes final assembly but before it is officially delivered, it undergoes rigorous external dimensional inspection to ensure product compliance. Among these, the wheel track parameter is a key indicator, directly affecting vehicle stability and steering performance. The current standard inspection method involves driving the vehicle to an inspection area covered with a special film, allowing the tire tread pattern to be completely imprinted on the film. The tire centerline is then manually drawn according to the tread pattern, and finally, the horizontal distance between the centerlines of both tires is measured using a steel ruler as the wheel track value. This inspection method requires that the imprinted film be flat and wrinkle-free, and that the tire tread imprint be complete and clear; otherwise, the accuracy of subsequent measurement benchmarks will be affected.

[0023] However, the applicant's observations and research revealed significant shortcomings in traditional measurement methods during practical application. Firstly, the quality of the rubbing is affected by multiple factors, including film material, pressure uniformity, and ambient temperature, easily leading to missing or deformed tread patterns, resulting in deviations between the drawn centerline and the actual axis. Secondly, manually drawing the centerline relies on the operator's experience; differences in line width and position between different personnel further accumulate measurement errors. Furthermore, this inspection process requires at least two operators working together and multiple checks to ensure data accuracy. This operational mode not only extends the inspection cycle of a single vehicle and reduces the overall production cycle time but also significantly increases the unit inspection cost due to increased manpower, making it difficult to meet the dual requirements of efficiency and accuracy in modern automotive production lines.

[0024] In view of this, the present invention proposes a wheel track measuring fixture to solve or at least alleviate the above problems.

[0025] Please see Figures 1 to 3 In one embodiment of this utility model, the wheel track measuring fixture includes a measuring component 1 and an auxiliary component 2. The measuring component 1 includes a first base 11, a first bracket 12, a mounting base 13, and a laser rangefinder 14. The first base 11 is positioned along a first direction X (see reference). Figure 1 A first slide rail 111 is provided in the direction indicated by the middle arrow X. A first bracket 12 is slidably connected to the first slide rail 111. A mounting base 13 is installed at the end of the first bracket 12 away from the first base 11. A laser rangefinder 14 is installed on the mounting base 13. The auxiliary component 2 includes a second base 21, a second bracket 22, and a reflector 23. The second base 21 is provided with a second slide rail 211 along the first direction X. The second bracket 22 is slidably connected to the second slide rail 211. The reflector 23 is connected to the second bracket 22 and is used to reflect the laser beam emitted by the laser rangefinder 14. The first base 11 is provided with a first scale 112 extending along the first direction X. The second base 21 is provided with a second scale 212 extending along the first direction X.

[0026] With this setup, when measuring the wheelbase of a vehicle, taking the measurement of the front wheelbase as an example, the inspector places both the first mounting plate 11 and the second mounting plate 21 in the inspection area, with the ground in the inspection area being level. The vehicle is then driven into the inspection area, so that the first mounting plate 11 and the second mounting plate 21 contact the corresponding front wheels. At this point, the inspector can obtain the tire width and calculate the position of the tire centerline by reading the values ​​on the first scale 112 and the second scale 212. After determining the scale corresponding to each tire centerline, the laser rangefinder 14 is moved along the first slide rail 111 to the position corresponding to one tire centerline, and the reflector 23 is moved along the second slide rail 211 to the position corresponding to the other tire centerline. Activating the laser rangefinder 14 then obtains the vehicle's wheelbase information. It should be noted that, in order to avoid interference between the laser rangefinder 14 and the reflector 23 and the front overhang of the vehicle, after the vehicle comes into contact with the first mount 11 and the second mount 21, the distance between the wheel and the laser rangefinder 14 and the reflector 23 should be greater than the front overhang length.

[0027] Thus, the technical solution provided in this embodiment can measure the wheel track without imprinting the tire tread, thereby eliminating imprinting errors and errors in drawing the tire center line, and eliminating reading errors from ruler measurement, which is beneficial to improving the accuracy of wheel track detection. At the same time, since the imprinting and other steps are eliminated, the wheel track measurement process is simple and efficient, requiring only one person to operate, which is beneficial to improving measurement efficiency and reducing labor costs.

[0028] Furthermore, in one embodiment of this utility model, please refer to... Figure 2 and Figure 3 The wheel track measuring fixture is used to detect the wheel track between the two tires on the front or rear sides of a vehicle. The first base 11 has a first limiting arc surface 113, and the second base 21 has a second limiting arc surface 213. Both the first and second limiting arc surfaces 113 and 213 are designed to fit against the tire surface. The curvature of the first and second limiting arc surfaces 113 and 213 can be designed according to the tire type of the vehicle being tested. After the vehicle enters the testing area, the first and second limiting arc surfaces 113 and 213 can fit tightly against the tire. This setup naturally and accurately guides the tire position, allowing operators to quickly position the vehicle tire against the arc surface without repeated adjustments, thus improving testing efficiency and eliminating the instability of the measurement reference caused by the tire tread curvature or pattern.

[0029] In one embodiment of this utility model, please refer to Figure 2 and Figure 3The first bracket 12 includes a first slider 121 slidably connected to the first slide rail 111, and a mounting base 13 is horizontally mounted on the top of the first slider 121; the second bracket 22 includes a second slider 221 slidably connected to the second slide rail 211, and a reflector 23 is vertically mounted on the second slider 221. This structure allows the wheel track measuring fixture to quickly and accurately adapt to vehicles with different wheelbases or track widths. By moving the position of the slider, the laser rangefinder 14 and the reflector 23 can be accurately aligned with the center line of the tire, thereby improving measurement efficiency and ensuring the smoothness of the adjustment process.

[0030] In another embodiment of this utility model, please refer to Figure 4 The first bracket 12 includes a first slider 121, a mother rod 122, a daughter rod 123, and a first fixing knob 124. The first slider 121 is slidably connected to the first slide rail 111. The mother rod 122 is vertically mounted on the top of the first slider 121. The mother rod 122 has an opening along the vertical direction Y (see reference). Figure 1 The sliding cavity extends in the direction indicated by the arrow Y. The sub-rod 123 extends into the sliding cavity and is slidably connected to the mother rod 122. The mounting base 13 is installed on the top of the sub-rod 123. The first fixing knob 124 passes through the mother rod 122 and is threadedly connected to the sub-rod 123. The first fixing knob 124 is used to limit the sliding of the sub-rod 123. The reflector 23 has at least two reflective zones along the vertical direction Y on the side facing the first base 11. By setting up a support structure for the height-adjustable sub-rod 123 and mother rod 122, the mounting base 13 can be height-adjusted to accommodate the height and testing habits of different testing personnel, avoiding the need for testing personnel to perform measurement work in a squatting position for a long time. When the first fixing knob 124 is rotated clockwise, it can fix the relative position of the sub-rod 123 and mother rod 122. When it is rotated counterclockwise, it can release the sub-rod 123, allowing it to slide freely along the sliding cavity to adjust the height of the mounting base 13. This structure is simple to operate and easy to maintain, which helps to reduce the cost of using wheel track measurement fixtures. Meanwhile, by setting at least two reflective areas on the reflector 23, the inspector can measure the wheel track value corresponding to different reflective areas by adjusting the height of the mounting base 13 during inspection, and obtain the final wheel track value by averaging. In this way, the measurement error caused by the uneven roughness of the reflector 23 surface can be significantly reduced, which is conducive to improving the accuracy of wheel track measurement.

[0031] Furthermore, the second support 22 includes a second slider 221, a vertical rod 222, a sub-slider, and a second fixing knob 223. The second slider 221 is slidably connected to the second slide rail 211. The vertical rod 222 is vertically mounted on the top of the second slider 221. The vertical rod 222 has a guide groove 2221 extending in the vertical direction Y. The sub-slider is slidably connected to the guide groove 2221. The reflector 23 is mounted on the side of the sub-slider facing the first base 11. The second fixing knob 223 is threadedly connected to the sub-slider and is used to limit the sliding of the sub-slider. With this arrangement, the reflector 23 can be precisely adjusted to a specific height that matches the laser emission point, ensuring that the laser beam is perpendicularly incident on its reflection area, thereby ensuring the collimation of the optical path and the accuracy of the measurement reference.

[0032] In one embodiment of this utility model, please refer to Figure 2 The mounting base 13 includes a base plate 131, a baffle 132, and two clamps 133. The base plate 131 is mounted on the top of the first bracket 12. The baffle 132 and the two clamps 133 are mounted on the side of the base plate 131 away from the first base 11 and enclose a clamping space. The laser rangefinder 14 is at least partially housed in the clamping space. The laser rangefinder 14 includes a detection end 141 and a tail end 142. The tail end 142 abuts against the baffle 132. The detection end 141 is used to emit a laser beam. The two clamps 133 are spaced apart and abut against the two sides of the laser rangefinder 14, respectively. The abutment between the baffle 132 and the tail end 142 of the rangefinder determines its axial reference position, ensuring that the emission direction of the detection end 141 is accurately oriented towards the reflector 23. The two spaced clamps 133 provide uniform clamping force from both sides, which can limit the lateral displacement and rotation of the laser rangefinder 14 and suppress errors caused by instrument shaking or displacement during the measurement process. At the same time, this design facilitates the assembly and disassembly of the laser rangefinder 14, which helps improve the maintenance efficiency of the laser rangefinder 14.

[0033] In one embodiment of this utility model, the clamp 133 has at least one oblong hole 1331. The length direction of the oblong hole 1331 is parallel to any horizontal plane and perpendicular to the first direction X. The base plate 131 has a fixing hole corresponding to the oblong hole 1331, and the oblong hole 1331 is bolted to the fixing hole. The matching design of the oblong hole 1331 and the fixing hole allows the clamp 133 to be finely adjusted within a certain range in the direction parallel to the base plate 131. This allows the actual clamping width between the two clamps 133 to be adaptively adjusted, thereby adapting to the slight differences in width dimensions of different brands or models of laser rangefinders 14. By loosening the bolts, sliding the clamp 133 laterally, and then tightening it again, the instrument side can be quickly and accurately matched, ensuring stable clamping and good alignment. This significantly improves the versatility and debugging efficiency of the wheel track measurement fixture.

[0034] In one embodiment of this utility model, the first base 11 and the second base 21 are integrally formed, and the first slide rail 111 and the second slide rail 211 overlap. Integral forming eliminates the cumulative errors caused by assembling multiple independent components, ensuring that the relative positions (such as parallelism and spacing) between the two bases remain consistent, providing a unified reference surface for tire positioning, which is beneficial for further improving the accuracy of wheel track measurement. Furthermore, the overlapping slide rails allow the first bracket 12 and the second bracket 22 to share the same linear guide rail, which helps simplify the structure and reduce manufacturing and maintenance costs.

[0035] In one embodiment of this utility model, the wheel track measuring fixture further includes a processor, which is communicatively connected to a laser rangefinder 14. The processor is used to receive distance information detected by the laser rangefinder 14. The processor can be either a computer or a mobile device (such as a mobile phone), and the communication connection between the processor and the laser rangefinder 14 can be via Bluetooth, Wi-Fi, or a cable connection. This setup eliminates the need for inspectors to frequently bend over to read data from the laser rangefinder 14, thus improving the efficiency of the measurement operation.

[0036] In one embodiment of this utility model, at least three leveling feet are installed on the bottom of the first base 11, and a spirit level is installed on the top surface of the mounting base 13. The at least three leveling feet on the bottom of the first base 11 enable the first base 11 to adapt to uneven ground, and mechanical adjustment ensures that the first base 11 itself is in a level state; while the spirit level installed on the top surface of the mounting base 13 provides the inspector with intuitive and real-time visual feedback on the levelness, enabling them to quickly adjust the support structure of the laser rangefinder 14 to a level state. This solution can eliminate measurement errors caused by the tilt of the base or the non-levelness of the laser beam, ensuring that the emission and reflection paths of the laser beam are within the preset ideal geometric relationship, thereby improving the accuracy of wheel track measurement data and adaptability to different working environments.

[0037] Understandably, the second base is also equipped with at least three leveling feet, and a spirit level is also installed on the top surface of the reflector 23. This design can work in conjunction with the leveling calibration of the first base 11 and the mounting base 13 to establish a spatial reference for the entire process from emission, path to reflection. This helps to eliminate systematic errors caused by unilateral or local tilting, making the measurement results unrestricted by site conditions, and further enhancing the accuracy, reliability, and adaptability to complex field environments.

[0038] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A tooling for measuring wheel track, characterized in that, include: The measuring component includes a first base, a first bracket, a mounting base, and a laser rangefinder. The first base has a first slide rail along a first direction. The first bracket is slidably connected to the first slide rail. The mounting base is installed at the end of the first bracket away from the first base. The laser rangefinder is installed on the mounting base. The auxiliary component includes a second base, a second bracket, and a reflector. The second base is provided with a second slide rail along the first direction. The second bracket is slidably connected to the second slide rail. The reflector is connected to the second bracket and is used to reflect the laser beam emitted by the laser rangefinder. The first base is provided with a first scale extending along the first direction, and the second base is provided with a second scale extending along the first direction.

2. The wheel track measuring fixture as described in claim 1, used to detect the wheel track between two tires on the front or rear side of a vehicle, characterized in that, The first platform has a first limiting arc surface, and the second platform has a second limiting arc surface. Both the first limiting arc surface and the second limiting arc surface are used to fit against the surface of the tire.

3. The wheel track measuring fixture as described in claim 1, characterized in that, The first bracket includes a first slider that is slidably connected to the first slide rail, and the mounting base is horizontally mounted on the top of the first slider; The second bracket includes a second slider that is slidably connected to the second slide rail, and the reflector is vertically mounted on the second slider.

4. The wheel track measuring fixture as described in claim 1, characterized in that, The first bracket includes a first slider, a mother rod, a son rod, and a first fixing knob. The first slider is slidably connected to the first slide rail. The mother rod is vertically mounted on the top of the first slider. The mother rod has a sliding cavity extending in the vertical direction. The son rod extends into the sliding cavity and is slidably connected to the mother rod. The mounting base is mounted on the top of the son rod. The first fixing knob passes through the mother rod and is threadedly connected to the son rod. The first fixing knob is used to restrict the sliding of the son rod. The reflector has at least two reflective zones along the vertical direction on the side facing the first base.

5. The wheel track measuring fixture as described in claim 4, characterized in that, The second bracket includes a second slider, a vertical rod, a sub-slider, and a second fixing knob. The second slider is slidably connected to the second slide rail. The vertical rod is vertically installed on the top of the second slider. The vertical rod has a guide groove extending along the vertical direction. The sub-slider is slidably connected to the guide groove. The reflector is installed on the side of the sub-slider facing the first base. The second fixing knob is threadedly connected to the sub-slider and is used to restrict the sliding of the sub-slider.

6. The wheel track measuring fixture as described in any one of claims 1 to 5, characterized in that, The mounting base includes a base plate, a baffle, and two clamps. The base plate is mounted on the top of the first bracket. The baffle and the two clamps are mounted on the side of the base plate away from the first base and enclose a clamping space. The laser rangefinder is at least partially housed in the clamping space. The laser rangefinder includes a detection end and a tail end, the tail end abutting against the baffle. The detection end is used to emit the laser beam. The two clamps are spaced apart and are respectively used to abut against the two sides of the laser rangefinder.

7. The wheel track measuring fixture as described in claim 6, characterized in that, The clamp has at least one waist-shaped hole, the length direction of which is parallel to any horizontal plane and perpendicular to the first direction. The base plate has a fixing hole corresponding to the waist-shaped hole, and the waist-shaped hole is bolted to the fixing hole.

8. The wheel track measuring fixture as described in any one of claims 1 to 5, characterized in that, The first platform and the second platform are integrally formed, and the first slide rail and the second slide rail overlap.

9. The wheel track measuring fixture as described in any one of claims 1 to 5, characterized in that, The wheel track measuring fixture also includes a processor, which is communicatively connected to the laser rangefinder and is used to receive distance information detected by the laser rangefinder.

10. The wheel track measuring fixture as described in any one of claims 1 to 5, characterized in that, The bottom of the first base is equipped with at least three leveling feet, and the top surface of the mounting base is equipped with a spirit level.

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