Non-contact wheel positioning parameter measuring device

Abstract

The utility model discloses a non-contact wheel positioning parameter measuring device, which relates to the technical field of four-wheel positioning, and comprises a movable frame with a T-shaped structure, the end part of the vertical end of the movable frame is rotatably connected with a bracket rod, and the side surface of the bracket rod is fixedly provided with a measuring instrument. A positioning device for extruding wheels is arranged at the transverse end of the moving frame, the positioning device comprises clamping assemblies arranged at the two ends of the transverse end of the moving frame, each clamping assembly comprises an L-shaped rod for extruding the peripheral side of a tire, an extruding assembly is arranged at the transverse end of the moving frame, and a lifting device is arranged on the side face of the moving frame. The lifting device is used for raising the height of the automobile so that wheels can be suspended. According to the non-contact wheel positioning parameter measuring device, the lifting device is arranged beside the moving frame, and the lifting device can drive one corner of an automobile to rise, so that the suspension of a wheel to be detected is realized, and the influence of hub deformation caused by gravity extrusion on the detection precision is avoided.

Description

Technical Field

[0001] This utility model relates to the field of four-wheel alignment technology, specifically a non-contact wheel alignment parameter measuring device. Background Technology

[0002] Publication No.: CN207365928U, Title: A Wheel Imaging and Measurement Device for a Non-Contact Four-Wheel Alignment System, which discloses: the device includes: a computer, a calibration target plate, and a side imaging device. The side imaging device includes a measuring camera, an auxiliary camera, a processing unit, a data transmission unit, and an LED auxiliary light. The measuring cameras are placed in parallel with their relative positions fixed, and the auxiliary camera is also fixed in relative position to the measuring camera. This patent also provides a non-contact four-wheel alignment system wheel measurement method. Using computer vision, the wheel hub edge is first located through image processing. Then, the extracted wheel hub edge is stereo-corrected so that the wheel hub edges extracted from the left and right view images are aligned to the same plane and aligned in rows. Thus, the matching points of the wheel hub edge points extracted from the corrected left (right) image and the wheel hub edge points extracted from the corrected right (left) image are on the same row, achieving non-contact positioning measurement of the wheel.

[0003] The aforementioned disclosure describes a method to locate the wheel hub edge through image processing, enabling non-contact positioning and measurement of the wheel. However, when the wheel is mounted on a car for four-wheel alignment testing, the wheel hub will undergo slight deformation under the pressure of the car's gravity, thus affecting the final result of the four-wheel alignment test. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a non-contact wheel alignment parameter measuring device, which solves the problem that when wheels are mounted on a car for four-wheel alignment testing, the wheel hub will undergo slight deformation under the pressure of the car's gravity, thus affecting the final result of the four-wheel alignment test.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a non-contact wheel alignment parameter measuring device, comprising a T-shaped movable frame, a support rod rotatably connected to the vertical end of the movable frame, a measuring instrument fixedly mounted on the side of the support rod, a positioning device for pressing the wheel provided at the horizontal end of the movable frame, the positioning device comprising clamping assemblies at both ends of the horizontal end of the movable frame, the clamping assemblies comprising L-shaped rods for pressing the tire circumference, a pressing assembly slidably disposed at the horizontal end of the movable frame between the two L-shaped rods, and a lifting device provided on the side of the movable frame for raising the vehicle height so that the wheel is suspended in the air.

[0006] Preferably, an angle adjustment device is provided between the side of the support rod and the movable frame. The angle adjustment device includes a support rod, and a T-shaped block is slidably connected to the upper surface of the movable frame. The two ends of the support rod are rotatably connected to the support rod and the T-shaped block, respectively.

[0007] Preferably, the upper surface of the movable frame is provided with a T-shaped groove that matches the T-shaped block, and a screw is rotatably connected to the vertical end of the movable frame. The end of the screw extends into the T-shaped groove and passes through the T-shaped block, and the end of the screw is threadedly connected to the T-shaped block.

[0008] Preferably, the inner side of the L-shaped rod is fixedly connected to an insert rod, the extrusion assembly includes an extrusion rod, the two ends of the transverse end of the movable frame are provided with second slots that match the insert rods, and the middle part of the transverse end of the movable frame is provided with a first slot that matches the extrusion rod.

[0009] Preferably, a strip-shaped groove is formed on the upper surface of one end of the extrusion rod located in the first slot, a rack is fixedly connected to the inner wall of the side of the strip-shaped groove, a gear that meshes with the rack is rotatably connected in the strip-shaped groove, and a knob is rotatably connected to the upper surface of the movable frame, the end of the knob extends into the strip-shaped groove and is fixedly connected to the gear.

[0010] Preferably, the lifting device includes a movable seat, a lifting pad is provided above the movable seat, a hydraulic rod is fixedly installed between the lifting pad and the movable seat, and a connecting device is provided between the movable seat and the movable frame. The connecting device includes two connecting rods that are rotatably connected to each other, and the ends of the two connecting rods that are far apart from each other are rotatably connected to the movable seat and the movable frame, respectively.

[0011] Beneficial effects

[0012] This invention provides a non-contact wheel alignment parameter measuring device. Compared with the prior art, it has the following advantages:

[0013] (1) The non-contact wheel alignment parameter measuring device is equipped with a movable frame, the top of which is rotatably connected to a support rod, and a measuring instrument is fixedly installed on the support rod. The rotation setting of the support rod allows the measuring angle of the measuring instrument to be adjusted so that the angle of the measuring instrument can be kept parallel to the tire after adjustment, thus avoiding the measurement angle from being skewed and affecting the measurement accuracy.

[0014] (2) The non-contact wheel positioning parameter measuring device, by setting a lifting device next to the moving frame, can lift one corner of the car, thereby suspending the wheel to be tested, avoiding the deformation of the wheel hub caused by gravity compression, which affects the detection accuracy. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a front view of the overall structure of this utility model;

[0017] Figure 3 This is an exploded view of the overall structure of this utility model;

[0018] Figure 4 This is an exploded view of the lifting device structure of this utility model.

[0019] In the diagram: 1. Movable frame; 11. First slot; 12. Second slot; 2. Positioning device; 21. Extrusion assembly; 211. Strip groove; 212. Rack; 22. Clamping assembly; 221. Insert rod; 23. Knob; 24. Gear; 3. Support rod; 31. Handheld part; 32. Measuring instrument; 4. Display; 5. Angle adjustment device; 51. Support rod; 52. T-block; 53. Screw; 6. Lifting device; 61. Movable seat; 62. Hydraulic rod; 63. Lifting pad; 7. Connecting device; 71. Connecting rod. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a non-contact wheel alignment parameter measuring device, including a T-shaped movable frame 1, a support rod 3 rotatably connected to the vertical end of the movable frame 1, a measuring instrument 32 fixedly installed on the side of the support rod 3, a positioning device 2 for squeezing the wheel provided at the horizontal end of the movable frame 1, the positioning device 2 including clamping components 22 provided at both ends of the horizontal end of the movable frame 1, the clamping components 22 including L-shaped rods for squeezing the circumference of the tire, a squeezing component 21 slidably provided at the horizontal end of the movable frame 1 and between the two L-shaped rods, and a lifting device 6 provided on the side of the movable frame 1, the lifting device 6 being used to raise the height of the car so that the wheel is suspended in the air.

[0022] Specifically, a movable frame 1 is provided, with a support rod 3 rotatably connected to the top of the movable frame 1. A measuring instrument 32 is fixedly installed on the support rod 3. The rotation of the support rod 3 allows the measuring angle of the measuring instrument 32 to be adjusted so that the angle of the measuring instrument 32 remains parallel to the tire after adjustment, avoiding skewed measuring angles that would affect the accuracy of the measurement. The measuring instrument 32 is existing technology and will not be described in detail. The measuring instrument 32 scans the tire hub and performs four-wheel alignment detection.

[0023] With the positioning device 2 in place, before testing, simply move the moving frame 1 to the side of the tire and align its center with the center of the tire. Then, clamp the tire's circumference with the clamping assembly 22 and slide the squeezing assembly 21 to squeeze the tire's side. During the squeezing process, the moving frame 1 will move automatically, thus achieving the perpendicularity between the moving frame 1 and the tire. Finally, rotate the support rod 3 to adjust the height of the measuring instrument 32 and rotate the scanning angle of the scanner in the measuring instrument 32 so that the height of the measuring instrument 32 is consistent with the height of the tire's center and the scanning angle of the scanner in the measuring instrument 32 remains perpendicular to the tire.

[0024] By setting up a lifting device 6 next to the mobile frame 1, the lifting device 6 can lift one corner of the car, thereby suspending the wheel to be tested and avoiding the deformation of the wheel hub caused by gravity compression, which would affect the testing accuracy.

[0025] A display 4 is also fixedly installed on the side of the support rod 3. The display 4 is electrically connected to the measuring instrument 32. The detection results of the measuring instrument 32 are displayed on the display 4. A handheld part 31 is fixedly installed at the top of the support rod 3. The moving frame 1 is moved by the handheld part 31.

[0026] An angle adjustment device 5 is provided between the side of the support rod 3 and the movable frame 1. The angle adjustment device 5 includes a support rod 51. A T-shaped block 52 is slidably connected to the upper surface of the movable frame 1. The two ends of the support rod 51 are rotatably connected to the support rod 3 and the T-shaped block 52, respectively.

[0027] Specifically, the angle adjustment device 5 adjusts and drives the support rod 3 to rotate, thereby adjusting the height of the measuring instrument 32. In use, the sliding T-block 52, under the pull of the support rod 51, drives the support rod 3 to rotate.

[0028] The upper surface of the movable frame 1 is provided with a T-shaped groove that matches the T-shaped block 52. The vertical end of the movable frame 1 is rotatably connected to a screw 53. The end of the screw 53 extends into the T-shaped groove and passes through the T-shaped block 52. The end of the screw 53 is threadedly connected to the T-shaped block 52.

[0029] Specifically, the mutual cooperation of the T-block 52 and the T-slot enables the T-block 52 to slide stably on the movable frame 1. The screw 53, when rotated, pulls and drives the T-block 52 to slide under the action of the thread.

[0030] The inner side of the L-shaped rod is fixedly connected to the insertion rod 221. The extrusion assembly 21 includes an extrusion rod. The two ends of the horizontal end of the moving frame 1 are provided with second slots 12 that match the insertion rod 221. The middle part of the horizontal end of the moving frame 1 is provided with a first slot 11 that matches the extrusion rod.

[0031] Specifically, the insert rod 221 is inserted into the second slide groove to achieve the sliding of the L-shaped rod, so as to adapt to the compression and clamping of tires of different widths. The compression rod slides on the moving frame 1 with the cooperation of the first slot 11.

[0032] A strip groove 211 is formed on the upper surface of one end of the extrusion rod located in the first slot 11. A rack 212 is fixedly connected to the inner wall of the side of the strip groove 211. A gear 24 that meshes with the rack 212 is rotatably connected in the strip groove 211. A knob 23 is rotatably connected to the upper surface of the moving frame 1. The end of the knob 23 extends into the strip groove 211 and is fixedly connected to the gear 24.

[0033] Specifically, rotating the knob 23 causes the gear 24 to rotate. With the cooperation of the rack 212, the gear 24 drives the extrusion rod to slide, extruding and clamping the side of the tire, thus fixing the movable frame 1.

[0034] The lifting device 6 includes a movable seat 61, a lifting pad 63 is provided above the movable seat 61, a hydraulic rod 62 is fixedly installed between the lifting pad 63 and the movable seat 61, and a connecting device 7 is provided between the movable seat 61 and the movable frame 1. The connecting device 7 includes two connecting rods 71 ​​that are rotatably connected to each other, and the ends of the two connecting rods 71 ​​that are far apart from each other are rotatably connected to the movable seat 61 and the movable frame 1 respectively.

[0035] Specifically, the lifting pad 63 is a rubber pad that comes into contact with the car. Under the action of the hydraulic rod 62, the lifting pad 63 is moved upward to lift the car.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-contact wheel alignment parameter measuring device, characterized in that: Including a T-shaped mobile frame (1); The vertical end of the mobile frame (1) is rotatably connected to a support rod (3), and a measuring instrument (32) is fixedly installed on the side of the support rod (3). The transverse end of the mobile frame (1) is provided with a positioning device (2) for squeezing the wheels. The positioning device (2) includes clamping components (22) disposed at both ends of the transverse end of the movable frame (1), and the clamping components (22) include an L-shaped rod that presses against the circumference of the tire. The compression assembly (21) is slidably disposed at the lateral end of the movable frame (1) and between the two L-shaped rods. The side of the mobile frame (1) is provided with a lifting device (6), which is used to raise the height of the car so that the wheels are suspended in the air.

2. The non-contact wheel alignment parameter measuring device according to claim 1, characterized in that: An angle adjustment device (5) is provided between the side of the support rod (3) and the movable frame (1). The angle adjustment device (5) includes a support rod (51). A T-shaped block (52) is slidably connected to the upper surface of the movable frame (1). The two ends of the support rod (51) are rotatably connected to the support rod (3) and the T-shaped block (52) respectively.

3. The non-contact wheel alignment parameter measuring device according to claim 2, characterized in that: The upper surface of the movable frame (1) is provided with a T-shaped groove that matches the T-shaped block (52). The vertical end of the movable frame (1) is rotatably connected to a screw (53). The end of the screw (53) extends into the T-shaped groove and passes through the T-shaped block (52). The end of the screw (53) is threadedly connected to the T-shaped block (52).

4. The non-contact wheel alignment parameter measuring device according to claim 1, characterized in that: The inner side of the L-shaped rod is fixedly connected to the insert rod (221), the extrusion assembly (21) includes an extrusion rod, the two ends of the horizontal end of the moving frame (1) are provided with second slots (12) that match the insert rod (221), and the middle part of the horizontal end of the moving frame (1) is provided with a first slot (11) that matches the extrusion rod.

5. The non-contact wheel alignment parameter measuring device according to claim 4, characterized in that: The upper surface of the extrusion rod located in the first slot (11) has a strip groove (211). A rack (212) is fixedly connected to the inner wall of the side of the strip groove (211). A gear (24) that meshes with the rack (212) is rotatably connected in the strip groove (211). A knob (23) is rotatably connected to the upper surface of the moving frame (1). The end of the knob (23) extends into the strip groove (211) and is fixedly connected to the gear (24).

6. The non-contact wheel alignment parameter measuring device according to claim 1, characterized in that: The lifting device (6) includes a movable seat (61), a lifting pad (63) is provided above the movable seat (61), a hydraulic rod (62) is fixedly installed between the lifting pad (63) and the movable seat (61), and a connecting device (7) is provided between the movable seat (61) and the movable frame (1). The connecting device (7) includes two connecting rods (71) that are rotatably connected to each other, and the ends of the two connecting rods (71) that are far apart from each other are rotatably connected to the movable seat (61) and the movable frame (1) respectively.

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