Four-wheel alignment detection equipment

Abstract

The embodiment of the present invention relates to the field of automobile detection technology, and specifically to a four-wheel alignment detection device, comprising: a base; a stand, one end of which is fixedly connected to the base and vertically arranged relative to the base; a crossbeam, which is arranged perpendicular to the stand and connected to the stand; a left movable arm and a right movable arm, which are respectively arranged at the two ends of the crossbeam and can slide along the length direction of the crossbeam; a control component, which is used to control the left movable arm and the right movable arm to slide synchronously toward or away from each other; a left camera group and a right camera group, which are respectively installed at the ends of the left movable arm and the right movable arm away from the crossbeam. In the above manner, the four-wheel alignment detection device of the embodiment of the present invention can quickly position the target within the field of view of the left camera group and the right camera group, effectively improving the efficiency of vehicle wheel alignment detection.

Description

Technical Field

[0001] The embodiment of the present invention relates to the technical field of automobile detection, and in particular to a four-wheel alignment detection device. Background Art

[0002] The four-wheel alignment detection equipment photographs the targets installed on the vehicle wheels and creates an image on the display device. The system calculates the position and inclination of the corresponding wheel based on the imaged pattern and the position of the pattern in the image, thereby determining whether the wheel needs to be adjusted and how it needs to be adjusted.

[0003] With the rapid development of the automobile industry, the size differences between vehicles are gradually increasing. The existing four-wheel alignment detection equipment designs the beam part as a sliding structure to adapt to more sizes of vehicles. However, its sliding structure is difficult to control, so it is impossible to quickly and accurately position the wheel target completely within the camera's field of view. Summary of the invention

[0004] In view of the above problems, an embodiment of the present invention provides a four-wheel alignment detection device, so as to quickly and accurately position the wheels, increase the wheel positioning rate, and further improve the vehicle assembly efficiency.

[0005] An embodiment of the present invention provides a four-wheel alignment detection device, comprising: a base; a frame, one end of the frame is fixedly connected to the base and is vertically arranged relative to the base; a crossbeam, the crossbeam is arranged perpendicular to the frame and connected to the frame; a left movable arm and a right movable arm, the left movable arm and the right movable arm are respectively arranged at two ends of the crossbeam and can slide along the length direction of the crossbeam; a control component, the control component is used to control the left movable arm and the right movable arm to slide synchronously toward or away from each other; a left camera group and a right camera group, the left camera group and the right camera group are respectively installed at the ends of the left movable arm and the right movable arm away from the crossbeam.

[0006] In an optional manner, a left rack is provided on the left movable arm along the length direction, and a right rack is provided on the right movable arm along the length direction; the control component includes a left gear structure, a right gear structure and a transmission belt, and the left gear structure and the right gear structure are both arranged on the cross beam, the left gear structure includes a first gear and a second gear coaxially arranged, and the second gear is meshed with the left rack; the right gear structure includes a third gear and a fourth gear coaxially arranged, and a fifth gear and a sixth gear coaxially arranged, the fourth gear is meshed with the fifth gear, and the sixth gear is meshed with the right rack; the transmission belt is meshed with the first gear and the third gear respectively.

[0007] In an optional manner, the number of teeth of the first gear is smaller than the number of teeth of the second gear, and the control assembly further includes an adjusting knob, and the adjusting knob is mounted on the shaft of the left gear structure and / or the right gear structure.

[0008] In an optional manner, the number of teeth of the first gear is greater than the number of teeth of the second gear, and the control component also includes a drive motor, and the output shaft of the drive motor is connected to the shaft of the left gear structure and / or the right gear structure.

[0009] In an optional embodiment, the left movable arm and the right movable arm are symmetrically arranged relative to the cross beam, the first gear and the third gear have the same number of teeth, and the tooth ratio of the fifth gear to the fourth gear is equal to the tooth ratio of the sixth gear to the second gear, so that the linear speed of the second gear and the sixth gear is the same.

[0010] In an optional embodiment, the crossbeam includes a connecting seat slidably connected to the vertical frame and a sleeve plate fixed on the connecting seat, the sleeve plate is arranged perpendicular to the vertical frame, both ends of the sleeve plate are open and a receiving cavity is provided therein, and at least one of the facing ends of the left movable arm and the right movable arm can be slidably accommodated in the receiving cavity.

[0011] In an optional manner, at least one slide groove extending along the length direction is respectively provided on the left movable arm and the right movable arm, and a guide pulley is connected to the inner wall of the sleeve plate, and the guide pulley is rotatably engaged in the slide groove.

[0012] In an optional manner, the four-wheel alignment detection equipment also includes a fastening knob rotatably connected to the sleeve, the fastening knob includes a rotating part and a fastening part, the fastening part is arranged through the sleeve, one end is fixedly connected to the rotating part, and the other end extends into the accommodating cavity, so that the fastening part can apply pressure to fix the left movable arm and / or the right movable arm.

[0013] In an optional manner, the stand is provided with at least one slide rail arranged along the height direction of the stand, the connecting seat is provided with a sliding part that cooperates with the slide rail, the base is vertically provided with a screw rod, the screw rod passes through the connecting seat and is threadedly connected to the connecting seat, and the base is also provided with a control module and a motor, the control module is electrically connected to the motor, and the output shaft of the motor is connected to the screw rod for driving the screw rod to rotate, and the screw rod drives the connecting seat to move along the slide rail.

[0014] In an optional manner, at least one of the left movable arm and the right movable arm is provided with a scale mark for identifying the sliding distance of the left movable arm or the right movable arm.

[0015] The four-wheel alignment detection equipment of the embodiment of the present invention realizes the synchronous sliding of the left movable arm and the right movable arm toward or away from each other by setting a control component, thereby quickly positioning the wheel target within the field of view of the left camera group and the right camera group, effectively improving the efficiency of vehicle wheel alignment detection.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 A structural schematic diagram of a four-wheel alignment detection device from one perspective provided by an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the exploded structure of a crossbeam portion of a four-wheel alignment detection device provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at A;

[0021] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure at B;

[0022] Figure 5 A schematic diagram of the use status of the four-wheel alignment detection device provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a crossbeam, a left movable arm and a right movable arm in a four-wheel alignment detection device provided by an embodiment of the present invention;

[0024] Figure 7 A schematic structural diagram of a crossbeam, a left movable arm and a right movable arm after the explosion of a cover plate in a four-wheel alignment detection device provided by an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of the side structure of a sleeve plate and a left movable arm in a four-wheel alignment detection device provided in an embodiment of the present invention;

[0026] Fig. 9A schematic structural diagram of another perspective of a four-wheel alignment detection device provided by an embodiment of the present invention;

[0027] Fig.10 A structural schematic diagram of a four-wheel alignment detection device from another perspective provided by an embodiment of the present invention.

[0028] The reference numerals in the specific implementation manner are as follows:

[0029] Four-wheel alignment detection device 100, base 110, stand 120, slide rail 121, crossbeam 130, connecting seat 131, sleeve plate 132, sliding member 133, left movable arm 140, left rack 141, right movable arm 150, right rack 151, left gear structure 160, first gear 161, second gear 162, right gear structure 170, third gear 171, fourth gear 172, fifth gear 173 , sixth gear 174, transmission belt 180, left camera group 190, right camera group 200, adjusting knob 210, slide groove 220, guide pulley 230, fastening knob 240, rotating part 241, fastening part 242, screw 250, motor 260, controller 270, circuit board 280, switch 290, moving wheel 300, positioning knob 310, pressurizing part 311, connecting shaft 312, screwing part 313. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0031] The embodiment of the present invention provides a four-wheel alignment detection device 100, see Figure 1 , the figure shows the overall structure of a four-wheel alignment detection device 100 according to an embodiment of the present invention. The four-wheel alignment detection device 100 comprises: a base 110, a stand 120, a crossbeam 130, a left movable arm 140, a right movable arm 150, a control component, a left camera group 190 and a right camera group 200. One end of the stand 120 is fixedly connected to the base 110 and is vertically arranged relative to the base 110; the crossbeam 130 is arranged perpendicular to the stand 120 and is connected to the stand 120; the left movable arm 140 and the right movable arm 150 are respectively arranged at both ends of the crossbeam 130 and can slide along the length direction of the crossbeam 130; the control component is used to control the left movable arm 140 and the right movable arm 150 to slide synchronously toward or away from each other; the left camera group 190 and the right camera group 200 are respectively installed at the ends of the left movable arm 140 and the right movable arm 150 away from the crossbeam 130.

[0032] The four-wheel alignment detection device 100 of the embodiment of the present invention realizes the synchronous sliding of the left movable arm 140 and the right movable arm 150 toward or away from each other by setting a control component, thereby quickly positioning the wheel target within the field of view of the left camera group 190 and the right camera group 200, effectively improving the efficiency of vehicle wheel alignment detection.

[0033] See also Figures 2 to 4 , the figure shows the connection structure between the control component, the crossbeam 130, the left movable arm 140 and the right movable arm 150 in the four-wheel alignment detection device 100 according to an embodiment of the present invention. In some embodiments, a left rack 141 may be provided on the left movable arm 140 along the length direction, and a right rack 151 may be provided on the right movable arm 150 along the length direction. The control component may include a left gear structure 160, a right gear structure 170 and a transmission belt 180. The left gear structure 160 and the right gear structure 170 are both arranged on the beam 130. The left gear structure 160 includes a coaxially arranged first gear 161 and a second gear 162, and the second gear 162 is meshed with the left rack 141; the right gear structure 170 includes a coaxially arranged third gear 171 and a fourth gear 172, and a coaxially arranged fifth gear 173 and a sixth gear 174, the fourth gear 172 is meshed with the fifth gear 173, and the sixth gear 174 is meshed with the right rack 151; the transmission belt 180 is meshed with the first gear 161 and the third gear 171 respectively.

[0034] It should be noted that the second gear 162 and the left rack 141 can be directly meshed or indirectly meshed through one or more intermediate gears, the fourth gear 172 and the fifth gear 173 can be directly meshed or indirectly meshed through one or more intermediate gears, and the sixth gear 174 and the right rack 151 can be directly meshed or indirectly meshed through multiple intermediate gears, as long as the left moving arm 140 and the right moving arm 150 can slide toward or away from each other synchronously.

[0035] By respectively arranging a left rack 141 and a right rack 151 on the left movable arm 140 and the right movable arm 150, and arranging a left gear structure 160 and a right gear structure 170 on the cross beam 130 which are respectively meshed with the left rack 141 and the right rack 151, and then connecting a transmission belt 180 between the left gear structure 160 and the right gear structure 170, the synchronous sliding of the left movable arm 140 and the right movable arm 150 toward or away from each other can be achieved, and the sliding distance of the left movable arm 140 and the right movable arm 150 can be accurately controlled at the same time, so that the targets of the wheels on both sides of the vehicle can be quickly and accurately positioned in the fields of view of the left camera group 190 and the right camera group 200 respectively, thereby improving the positioning rate of the wheels and further improving the vehicle assembly efficiency.

[0036] exist Figure 2In the specific embodiment shown, a fixed shell can be provided on the outside of the left gear structure 160 and the right gear structure 170, and the fixed shell is arranged on the beam 130. The gears in the left gear structure 160 and the right gear structure 170 are rotatably connected to the fixed shell through a rotating shaft. An opening is provided on the fixed shell for the transmission belt 180 to pass through. The transmission belt 180 can be a belt with a rack on the inner ring.

[0037] It can be understood that what is shown in the figure is only an example. In other embodiments, the left gear structure 160 and the right gear structure 170 can also be provided with bearings at both ends of the rotating shaft. The bearings are fixed to the beam 130 to fix the gears in the left gear structure 160 and the right gear structure 170. The transmission belt 180 can also use a chain.

[0038] Please refer again Figures 2 to 4 In some embodiments, the number of teeth of the first gear 161 may be smaller than the number of teeth of the second gear 162 , and the control component may further include an adjusting knob 210 , which may be mounted on any one or more of the rotating shafts of the first gear 161 , the third gear 171 , or the fifth gear 173 .

[0039] The number of teeth of the first gear 161 is set to be smaller than the number of teeth of the second gear 162, so that the linear speed of the second gear 162 is greater than the linear speed of the first gear 161, so as to achieve fast adjustment. The adjustment knob 210 is set on any one or more of the first gear 161, the third gear 171 or the fifth gear 173. The user can adjust the synchronous sliding of the left moving arm 140 and the right moving arm 150 by slightly rotating the adjustment knob 210 by hand. The adjusting knob 210 can be separately arranged on the left movable arm 140 and the right movable arm 150, and a synchronous transmission mechanism can be arranged between the adjusting knobs 210 separately arranged on the left movable arm and the right movable arm, so that the user can drive the other adjusting knob 210 to rotate synchronously after rotating one of the adjusting knobs 210, thereby realizing the synchronous sliding of the left movable arm 140 and the right movable arm 150, or the adjusting knob 210 can be arranged on the crossbeam, which is coupled and connected to the left movable arm 140 and the right movable arm 150 respectively, and the user can realize the synchronous sliding of the left movable arm 140 and the right movable arm 150 by rotating the adjusting knob 210 on the crossbeam.

[0040] exist Figure 2 In the specific embodiment shown, the adjusting knob 210 is disposed through the fixed housings of the left gear structure 160 and the right gear structure 170, and one end is connected to the rotating shaft of the internal gear, and the other end is used for manual tightening.

[0041] In some embodiments, the number of teeth of the first gear 161 may also be greater than the number of teeth of the second gear 162, so that the linear speed of the second gear 162 is smaller than the linear speed of the first gear 161, and the adjustment knob 210 is set on any one or more of the first gear 161, the third gear 171 or the fifth gear 173 to achieve fine-tuning of the left moving arm 140 and the right moving arm 150.

[0042] In some embodiments, the number of teeth of the first gear 161 may be greater than the number of teeth of the second gear 162, and the control component may further include a drive motor, the output shaft of the drive motor may be connected to at least one of the rotating shaft where the first gear 161 is located or the rotating shaft where the third gear 171 is located, and the drive motor drives at least one of the first gear 161 or the third gear 171 to rotate through its output shaft, thereby driving the left movable arm 140 and the right movable arm 150 to slide synchronously, and the four-wheel alignment detection device 100 is also provided with a controller electrically connected to the drive motor, and the controller is used to control the operation of the drive motor. It can be understood that in other embodiments, the output shaft of the drive motor may also be directly connected to at least one of the first gear 161 or the third gear 171.

[0043] By setting the number of teeth of the first gear 161 to be greater than the number of teeth of the second gear 162, deceleration can be achieved when the output shaft of the driving motor drives the left movable arm 140 or the right movable arm 150, thereby avoiding the situation where the driving motor drives the left movable arm 140 or the right movable arm 150 to slide at too fast a speed, causing inconvenience in adjustment.

[0044] In a specific embodiment, the controller can directly control the drive motor. The controller may include a circuit board and a control module, a display module and a switch module electrically connected to the circuit board. The switch module is used to control the opening and closing of the drive motor. The control module is used to control the rotation speed, rotation time, forward rotation and reverse rotation of the output shaft of the drive motor, thereby controlling the sliding speed, sliding time, sliding distance and sliding towards or away from each other of the left moving arm 140 and the right moving arm 150. The display module is used to display feedback information such as the sliding direction, sliding distance, sliding time, sliding speed, etc. of the left moving arm 140 and the right moving arm 150.

[0045] It can be understood that in other specific embodiments, the controller can also be used as an adapter to indirectly control the drive motor. The controller may include a circuit board and a transceiver module electrically connected to the circuit board (for example, it can be a wireless transceiver module or a limited transceiver module), and a signal conversion module. The transceiver module is used to connect to the external input device or output device signal to receive or send the signal. The signal conversion module is used to convert the signal received by the transceiver module (for example, it can be an image signal, an audio signal, a video signal, etc.) into a signal recognizable by the controller (for example, it can be an electrical signal) to control the motor, or to convert the controller's signal (for example, it can be an electrical signal) into a signal recognizable by the external output device (for example, it can be an image signal, an audio signal, a video signal, etc.), thereby feeding back information such as the sliding direction, sliding distance, sliding time, and sliding speed of the left movable arm 140 and the right movable arm 150 to the external output device, so that the user can control and adjust the drive motor in a timely and accurate manner.

[0046] In some embodiments, the left movable arm 140 and the right movable arm 150 can be symmetrically arranged relative to the beam 130, the number of teeth of the first gear 161 and the third gear 171 can be the same, and the tooth ratio of the fifth gear 173 and the fourth gear 172 is equal to the tooth ratio of the sixth gear 174 and the second gear 162, so that the linear speeds of the second gear 162 and the sixth gear 174 are the same.

[0047] By setting the number of teeth of the first gear 161 and the third gear 171 to be the same, and the gear ratio of the fifth gear 173 to the fourth gear 172 to be equal to the gear ratio of the sixth gear 174 to the second gear 162, the synchronous sliding distances of the left movable arm 140 and the right movable arm 150 are made equal, so that the left camera group 190 and the right camera group 200 at both ends of the left movable arm 140 and the right movable arm 150 are still at the same distance relative to the cross beam 130 after the left movable arm 140 and the right movable arm 150 slide synchronously, thereby ensuring that the wheels on both sides of the vehicle are calibrated and positioned at the same time.

[0048] See also Figure 5 The figure shows the use status of the four-wheel alignment detection device 100 according to an embodiment of the present invention. In the specific use process, the center line of the beam 130 can be aligned with the center line of the vehicle first, and then only the wheel on one side needs to be calibrated and positioned, and the moving arm on the other side will slide accordingly, and naturally the wheel on the other side will be positioned within the field of view of the camera group.

[0049] See also Figure 6, the figure shows the connection structure between the cross beam 130 and the moving arm in the four-wheel alignment detection device 100 according to an embodiment of the present invention. In some embodiments, the cross beam 130 includes a connection seat 131 slidably connected to the stand 120 and a sleeve 132 fixed on the connection seat 131, the sleeve 132 is arranged perpendicular to the stand 120, the sleeve 132 has openings at both ends and a receiving cavity therein, and at least one of the opposite ends of the left moving arm 140 and the right moving arm 150 can be slidably received in the receiving cavity.

[0050] By slidably accommodating at least one of the facing ends of the left movable arm 140 and the right movable arm 150 in the accommodating cavity, the left movable arm 140 and the right movable arm 150 can slide relative to the sleeve plate 132, while the sleeve plate 132 supports and protects the left movable arm 140 and the right movable arm 150, thereby improving the stability of the sliding structure.

[0051] See also Figure 7 , the figure shows the specific structure of the slide groove 220 and the guide pulley 230 in the four-wheel alignment detection device 100 of an embodiment of the present invention. In some embodiments, the left movable arm 140 and the right movable arm 150 can be respectively provided with at least one slide groove 220 extending along the length direction, and the inner wall of the sleeve plate 132 is connected with the guide pulley 230, and the guide pulley 230 is rotatably engaged in the slide groove 220.

[0052] Through the cooperative connection between the guide pulley 230 and the slide groove 220, on the one hand, the sliding friction between the left movable arm 140, the right movable arm 150 and the sleeve plate 132 is reduced, thereby facilitating the smooth sliding of the left movable arm 140 and the right movable arm 150; on the other hand, a guiding function is provided for the sliding of the left movable arm 140 and the right movable arm 150.

[0053] See also Figure 8 , the figure shows a side view structure of the connection between the left movable arm 140 and the sleeve 132 in the four-wheel alignment detection device 100 of an embodiment of the present invention. In the specific embodiment shown in the figure, the guide pulley 230 is rotatably connected to the inner wall of the sleeve 132 through the rotating shaft at its end face, and an annular groove is provided on the side of the guide pulley 230. The cross-section of the slide groove 220 is T-shaped with an opening smaller than the internal space. The annular groove on the side of the guide pulley 230 is clamped on the walls on both sides of the opening of the slide groove 220 to achieve the coordinated sliding between the guide pulley 230 and the slide groove 220.

[0054] It is understandable that in other embodiments, the guide pulley 230 may also be completely engaged in the slide groove 220 .

[0055] Please refer again Figure 1 and Figure 2In some embodiments, the four-wheel alignment detection device 100 may further include a fastening knob 240 rotatably connected to the sleeve 132. The fastening knob 240 may include a rotating portion 241 and a fastening portion 242. The fastening portion 242 is arranged through the sleeve 132, one end of which is fixedly connected to the rotating portion 241, and the other end extends into the accommodating cavity, so that the fastening portion 242 can apply pressure and fix at least one of the left movable arm 140 and the right movable arm 150.

[0056] During specific use, when the wheel targets on both sides completely enter the field of view of the camera, rotate the tightening knob 240 to apply pressure to fix the left movable arm 140 and the right movable arm 150 to prevent the left movable arm 140 and the right movable arm 150 from accidentally slipping and causing positioning failure or inaccurate positioning.

[0057] In a specific embodiment, one end of the fastening portion 242 used for applying pressure and fixing can be sleeved or bonded with a soft rubber layer to prevent the fastening portion 242 from scratching the surface of the left moving arm 140 or the right moving arm 150 .

[0058] See also Fig. 9 and Fig.10 , the figure shows the connection and driving structure of the stand 120 and the crossbeam 130 in the four-wheel alignment detection device 100 of an embodiment of the present invention. In some embodiments, the stand 120 may be provided with at least one slide rail 121 arranged along the height direction of the stand 120, and the connecting seat 131 may be provided with a sliding member 133 that cooperates with the slide rail 121, so that the crossbeam 130 can slide along the slide rail 121 relative to the stand 120, and the base 110 may be vertically provided with a screw 250, the screw 250 passes through the connecting seat 131 and is threadedly connected to the connecting seat 131, and the base 110 is also provided with a control module and a motor 260, the control module is electrically connected to the motor 260, and the output shaft of the motor 260 is connected with the screw 250 for driving the screw 250 to rotate, and the screw 250 drives the connecting seat 131 to move along the slide rail 121.

[0059] The motor 260 drives the screw 250, which drives the connecting seat 131 to slide relative to the stand 120, so as to realize the automatic lifting and lowering of the beam 130, save manpower, adjust the height of the camera group to adapt to more sizes of vehicles, and further improve the efficiency of positioning.

[0060] It should be noted that the output shaft of the motor 260 can be directly connected to the bottom end of the screw 250 for driving, or can indirectly drive the screw 250 to rotate through gears to achieve the purpose of acceleration or deceleration.

[0061] exist Fig.10In the specific embodiment shown, the control module may include a controller 270, a circuit board 280 and a switch 290. The controller 270, the motor 260 and the switch 290 are all electrically connected to the circuit board 280. The motor 260 is directly or indirectly connected to the screw 250, so that when the motor 260 is working, it drives the screw 250 to rotate, and the screw 250 drives the connecting seat 131 to move along the slide rail 121.

[0062] In some embodiments, at least one of the left movable arm 140 and the right movable arm 150 is provided with a scale mark for identifying the sliding distance of the left movable arm 140 or the right movable arm 150 .

[0063] By setting scale marks, the user can quickly identify the sliding distance of the left movable arm 140 or the right movable arm 150, which is convenient for recording, thereby providing data reference for subsequent wheel alignment detection to save subsequent operation time.

[0064] Please refer again Figure 1 In some embodiments, a moving wheel 300 may be provided at the end corner of the base 110. This arrangement facilitates the overall movement of the four-wheel alignment detection device 100, improves the stability of the support of the moving wheel to the base, and is conducive to rapid positioning detection.

[0065] Please refer again Figure 1 In some embodiments, a positioning knob 310 may also be provided on the base 110. The positioning knob 310 includes a pressurizing portion 311, a connecting shaft 312 and a screwing portion 313. The connecting shaft 312 vertically passes through the base 110. The pressurizing portion 311 is connected to one end of the connecting shaft 312 away from the stand 120, and the screwing portion 313 is connected to the other end of the connecting shaft 312.

[0066] In specific use, the base 110 can be placed on the ground. When the terrain is uneven, the presence of the moving wheel 300 will cause the four-wheel alignment detection device 100 to slide. If the device accidentally slips, it may also cause the risk of damage. The setting of the positioning knob 310 makes the four-wheel alignment detection device 100 fixed. Specifically, after the four-wheel alignment detection device 100 is moved to the target area, the screwing part 313 is rotated by hand to press the pressurizing part 311 down to elastically contact with the ground or other plane where the base is placed, so that static friction is generated between the pressurizing part 311 and the ground or other planes to fix the four-wheel alignment detection device 100.

[0067] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present invention should have the common meanings understood by technicians in the field to which the embodiments of the present invention belong.

[0068] In the description of the embodiments of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention.

[0069] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0070] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0071] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A four-wheel alignment detection device, characterized in that: include: Base; A stand, one end of which is fixedly connected to the base and is vertically arranged relative to the base; A crossbeam, the crossbeam is arranged perpendicular to the stand and connected to the stand; A left movable arm and a right movable arm, wherein the left movable arm and the right movable arm are respectively arranged at two ends of the cross beam and can slide along the length direction of the cross beam; A control component, the control component is used to control the left movable arm and the right movable arm to slide synchronously toward or away from each other; A left camera group and a right camera group, wherein the left camera group and the right camera group are respectively mounted on ends of the left movable arm and the right movable arm away from the crossbeam; The left movable arm is provided with a left rack along the length direction, and the right movable arm is provided with a right rack along the length direction; The control assembly includes a left gear structure, a right gear structure and a transmission belt. The left gear structure and the right gear structure are both arranged on the crossbeam. The left gear structure includes a first gear and a second gear arranged coaxially, and the second gear is meshed with the left rack. The right gear structure includes a third gear and a fourth gear arranged coaxially, and a fifth gear and a sixth gear arranged coaxially, the fourth gear is meshed with the fifth gear, and the sixth gear is meshed with the right rack. The transmission belt is meshed with the first gear and the third gear respectively. The outside of the left gear structure and the right gear structure are both provided with a fixed shell, and the fixed shell is arranged on the crossbeam. Each gear in the left gear structure and the right gear structure is rotatably connected to the fixed shell through a rotating shaft, and the fixed shell is provided with an opening for the transmission belt to pass through.

2. The four-wheel alignment detection device according to claim 1, characterized in that: The number of teeth of the first gear is smaller than the number of teeth of the second gear. The control assembly further comprises an adjusting knob, and the adjusting knob is mounted on the shaft of the left gear structure and / or the right gear structure.

3. The four-wheel alignment detection device according to claim 1, characterized in that: The number of teeth of the first gear is greater than the number of teeth of the second gear. The control component also includes a drive motor, and the output shaft of the drive motor is connected to the shaft of the left gear structure and / or the right gear structure.

4. The four-wheel alignment detection device according to claim 1, characterized in that: The left movable arm and the right movable arm are symmetrically arranged relative to the cross beam, the first gear and the third gear have the same number of teeth, the tooth ratio of the fifth gear to the fourth gear is equal to the tooth ratio of the sixth gear to the second gear, so that the linear speed of the second gear and the sixth gear is the same.

5. The four-wheel alignment detection device according to claim 1, characterized in that: The crossbeam includes a connecting seat slidably connected to the vertical frame and a sleeve fixed on the connecting seat. The sleeve is arranged perpendicular to the vertical frame. Both ends of the sleeve are open and a receiving cavity is provided therein. At least one of the facing ends of the left movable arm and the right movable arm can be slidably accommodated in the receiving cavity.

6. The four-wheel alignment detection device according to claim 5, characterized in that: The left movable arm and the right movable arm are respectively provided with at least one slide groove extending along the length direction, and the inner wall of the sleeve plate is connected with a guide pulley, and the guide pulley is rotatably engaged in the slide groove.

7. The four-wheel alignment detection device according to claim 5, characterized in that: The four-wheel alignment detection equipment also includes a fastening knob rotatably connected to the sleeve, the fastening knob includes a rotating portion and a fastening portion, the fastening portion is arranged through the sleeve, one end of the fastening portion is fixedly connected to the rotating portion, and the other end extends into the accommodating cavity, so that the fastening portion can apply pressure to fix the left movable arm and / or the right movable arm.

8. The four-wheel alignment detection device according to claim 5, characterized in that: The stand is provided with at least one slide rail arranged along the height direction of the stand, the connecting seat is provided with a sliding part matching the slide rail, the base is vertically provided with a screw rod, the screw rod passes through the connecting seat and is threadedly connected to the connecting seat, the base is also provided with a control module and a motor, the control module is electrically connected to the motor, the output shaft of the motor is connected to the screw rod for driving the screw rod to rotate, and the screw rod drives the connecting seat to move along the slide rail.

9. The four-wheel alignment detection device according to any one of claims 1 to 8, characterized in that: At least one of the left movable arm and the right movable arm is provided with a scale mark for identifying the sliding distance of the left movable arm or the right movable arm.

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