Automobile four-wheel alignment detection device and method

Abstract

The application provides a kind of automobile four-wheel alignment detection device and method, device includes: rack, two groups of front wheel fixing frame, two groups of front wheel fixing frame symmetrically set in the left and right sides of the front part of the rack;Two groups of rear wheel fixing frame, symmetrically set in the left and right sides of the rear part of the rack;Front wheel fixing frame is connected with front wheel detection device, the rear wheel fixing frame is connected with rear wheel detection device, and adjustable positioning device is connected in front wheel fixing frame and rear wheel fixing frame respectively;Controller, display, controller is electrically connected with front wheel detection device, rear wheel detection device, display respectively.In the application, the distance between the components for wheel alignment can be adjusted, so that different sizes of wheels can be detected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wheel detection, in particular to a four-wheel alignment detection device and method. BACKGROUND

[0002] At present, the detection of automobile wheels needs to detect the position information of automobile wheels on the automobile to determine the automobile wheel alignment parameters (or the relative position information between the wheels according to the position information of each wheel), so as to guide the automobile repairman to adjust the wheel alignment parameters to meet the design requirements of the automobile, realize the smoothness and safety of the automobile driving, and reduce the oil consumption and wheel wear of the automobile.

[0003] In the prior art, the four-wheel alignment detection device and / or detection method is used to detect the four wheels of the automobile. The distance between the components for wheel alignment (such as the rotating drum in CN110749454A) in the existing four-wheel alignment device (such as CN110749454A) cannot be adjusted, and different sizes of wheels cannot be detected. SUMMARY

[0004] The present application provides a four-wheel alignment detection device and method to solve the technical problems in the background art.

[0005] To solve the above technical problems, the present application discloses a four-wheel alignment detection device for an automobile, comprising:

[0006] a rack, two groups of front wheel fixing frames, which are symmetrically arranged on the left and right sides of the front part of the rack;

[0007] two groups of rear wheel fixing frames, which are symmetrically arranged on the left and right sides of the rear part of the rack;

[0008] The front wheel fixing frame is connected with a front wheel detection device, the rear wheel fixing frame is connected with a rear wheel detection device, and the front wheel fixing frame and the rear wheel fixing frame are respectively connected with an adjustable positioning device;

[0009] a controller and a display, wherein the controller is electrically connected with the front wheel detection device, the rear wheel detection device and the display.

[0010] Preferably, the front wheel fixing frame is fixedly connected with the left side or the right side of the front part of the rack through a first connecting rod.

[0011] The rear part of the rack is provided with a sliding groove, a sliding block is connected in the sliding groove, the rear wheel fixing frame is fixedly connected with the sliding block through a second connecting rod, and the rear part of the rack is connected with an electric telescopic rod, which is used to drive the sliding block to slide along the sliding groove.

[0012] Preferably, the front wheel fixing frame and the rear wheel fixing frame each comprise:

[0013] The first box body and the second box body are connected at one side of the first box body close to the rack, the side where the first box body and the second box body are connected is through, and the upper end of the first box body is detachably connected with a first box cover.

[0014] The adjustable positioning device comprises two front and rear symmetrical positioning groups, the positioning group comprises a screw rod extending in the front and rear direction, the screw rod is rotationally connected with the inner wall of the front side of the front cavity or the inner wall of the rear side of the rear cavity, a matching sliding block is threadedly sleeved on the screw rod, and a positioning column is connected on the side where the matching sliding blocks are close to each other.

[0015] Preferably, the driving mechanism comprises:

[0016] A driving shell is installed in the first box body.

[0017] A matching shaft one is rotationally connected with the inner walls of the front and rear sides of the first box body at both ends.

[0018] A driving motor is installed in the driving shell.

[0019] A matching shaft two is fixedly connected to the output end of the driving motor.

[0020] A matching bevel gear one is fixedly sleeved on the end of the matching shaft two away from the driving motor.

[0021] A matching bevel gear two is fixedly sleeved on the matching shaft one, and the matching bevel gear one and the matching bevel gear two are in meshing transmission.

[0022] Two first pulleys are fixedly sleeved on the front and rear parts of the matching shaft one, and the screw rods of the two positioning groups are respectively fixedly sleeved with second pulleys, and the two first pulleys are in transmission with the two second pulleys through two belts.

[0023] Preferably, the front wheel detection device comprises a support connecting rod one connected with the driving shell on the front side, a detection plate one fixedly connected on the side of the support connecting rod one close to the positioning column, and an offset detection device one arranged on the detection plate one.

[0024] The rear wheel detection device comprises a support connecting rod two connected with the driving shell on the rear side, a detection plate two fixedly connected on the side of the support connecting rod two close to the positioning column, and an offset detection device two arranged on the detection plate.

[0025] Preferably, the driving mechanism further comprises:

[0026] A matching cylinder, wherein an annular sliding groove is arranged on the circumferential side of the matching cylinder.

[0027] The matching sliding rod is in sliding connection with the annular sliding groove.

[0028] The connecting plate is fixedly connected with the matching sliding rod, and the connecting plate is fixedly connected with one end of the support connecting rod I or the support connecting rod II away from the rack.

[0029] The matching spring has two ends fixedly connected with the connecting plate and the inner wall of the driving shell respectively.

[0030] Preferably, the support connecting rod I and the support connecting rod II are further provided with a camera.

[0031] Preferably, the adjustable positioning device further comprises:

[0032] The positioning box is provided with positioning column inlets on the upper front and rear sides;

[0033] The support structure is arranged in the positioning box and between the positioning columns on the front and rear sides, and comprises: a support sleeve fixedly connected to the inner wall of the lower end of the positioning box; a support column in sliding connection with the support sleeve, the support column integrally extending an extension section on the outer side of the lower part; a support spring having two ends fixedly connected with the extension section and the inner side wall of the support sleeve; and a plurality of spring rods having upper ends fixedly connected with the middle part of the lower end of the support column and lower ends fixedly connected with the inner wall of the positioning box.

[0034] The two groups of left-right symmetrical detection mechanisms comprise: support blocks fixedly connected with the left or right inner wall of the positioning box, the side of the support blocks close to each other being a slope; a limiting groove vertically arranged on the slope; two first fixed pulleys installed on the front or rear side wall of the support sleeve in an up-down interval; a mounting block in sliding connection with the limiting groove along a direction perpendicular to the slope, the mounting block being provided with a detector mounted thereon; a matching rack I fixedly connected with the lower end of the mounting block; a matching rack II in sliding connection with the limiting groove; a matching gear in rotational connection with the limiting groove, the matching gear being in meshing connection with the matching rack I and the matching rack II respectively; a pulling block fixedly connected with the left or right part of the lower end of the support column; a connecting pull rope having one end fixedly connected with the lower end of the pulling block and the other end fixedly connected with the lower end of the matching rack II, the connecting pull rope being wound around the first fixed pulley.

[0035] Preferably, the ground at the rear end of the rack is further provided with a platform, and the car drives into the platform and then drives towards the rack; and the adjustable positioning device further comprises:

[0036] A distance detection device is arranged on the platform and used for detecting the distance between the center of the wheel of the car and the top end of the platform.

[0037] A temperature detection device is arranged on the platform and used for detecting the temperature of the wheel.

[0038] The controller is in communication connection with the automobile controller on the automobile, and when the automobile moves on the platform, the controller acquires automobile wheel information transmitted by the automobile controller, and the automobile wheel information includes: the used time length of the automobile wheel and the rated total use time length of the automobile wheel;

[0039] An alarm, the controller is in electrical connection with the distance detection device, the temperature detection device and the alarm, the controller controls the alarm to alarm based on the automobile controller, the distance detection device and the temperature detection device, and the controller controls the alarm to alarm when the alarm evaluation coefficient P is not in the preset range.

[0040] The alarm evaluation coefficient P is calculated based on the automobile controller, the distance detection device, the temperature detection device and the following formula, and the controller controls the alarm to alarm when the P is not in the preset range.

[0041]

[0042] D is the outer diameter of the wheel; H is the detection value of the distance detection device, P is the air pressure of the wheel, A is the vertical load borne by the wheel, π is a value., R is the curvature radius of the wheel of the automobile, K1 is the first coefficient; T2 is the rated total use time length of the wheel, T1 is the used time length of the wheel; t is the unit time; C is the second coefficient, B1 is the surface temperature of the wheel, B0 is the reference temperature of the preset wheel, e is the natural constant, and L is the unit length.

[0043] A detection method of an automobile four-wheel positioning detection device, after the front wheel fixing frame and the rear wheel fixing frame are installed, the third box cover of the front wheel fixing frame and the rear wheel fixing frame is in a closed state, and the first box cover of the front wheel fixing frame and the rear wheel fixing frame and the second box cover of the front wheel fixing frame are in an open state; the second box cover is an automatic opening and closing door, and the method comprises the following steps:

[0044] Step: move the front wheel fixing frame and the rear wheel fixing frame to match the interval of the front wheel and the rear wheel of the automobile to be detected by driving the adjusting sliding block through the electric telescopic rod;

[0045] Step: move the automobile to be detected to the automobile four-wheel positioning detection device, and open the second box cover of the rear wheel fixing frame when the front wheel of the automobile completely passes through the rear wheel fixing frame;

[0046] Step: place the front wheel of the automobile to be detected between the front and rear two positioning columns in the front wheel fixing frame, and place the rear wheel of the automobile to be detected between the front and rear two positioning columns in the rear wheel fixing frame;

[0047] Step: detect the offset value of the front wheel and the rear wheel of the automobile through the offset detector I and the offset detector II, and display the offset value through the display.

[0048] The technical scheme of the present application is further described in detail below through the drawings and the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0049] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of the specification, illustrate embodiments of the application and are included to provide a further understanding of the application, and are made a part of the specification. In the drawings:

[0050] Figure 1 A schematic structural view of a four-wheel alignment device of an automobile according to the present application;

[0051] Figure 2 A schematic structural view of a four-wheel alignment device of an automobile according to the present application; Figure 1 A schematic structural view of a four-wheel alignment device of an automobile according to the present application;

[0052] Figure 3 A schematic structural view of a four-wheel alignment device of an automobile according to the present application; Figure 2 A schematic structural view of a four-wheel alignment device of an automobile according to the present application;

[0053] Figure 4 A schematic structural view of a four-wheel alignment device of an automobile according to the present application;

[0054] Figure 5 A schematic structural view of a four-wheel alignment device of an automobile according to the present application; Figure 4 A schematic structural view of a four-wheel alignment device of an automobile according to the present application.

[0055] In the drawings: 1, frame; 2, front wheel fixing frame; 21, first box body; 22, second box body; 23, front cavity; 24, middle cavity; 25, rear cavity; 3, rear wheel fixing frame; 4, first connecting rod; 5, sliding groove; 6, sliding block; 7, second connecting rod; 8, adjustable alignment device; 81, alignment column; 82, screw rod; 83, matching sliding block; 84, alignment box; 85, alignment column inlet; 86, support sleeve; 87, support column; 88, extension section; 89, support spring; 810, spring rod; 811, support block; 812, limiting groove; 813, first pulley; 814, matching rack one; 815, matching rack two; 816, matching gear; 817, pulling block; 818, connecting pulling rope; 819, mounting block; 9, driving mechanism; 91, driving shell; 92, matching shaft one; 93, driving motor; 94, matching shaft two; 95, matching bevel gear one; 96, matching bevel gear two; 97, matching cylinder; 98, matching sliding rod; 99, connecting plate; 910, matching spring; 911, annular sliding groove; 912, first pulley; 913, second pulley; 914, belt; 10, front wheel detection device; 101, support connecting rod one; 102, detection plate one; 11, rear wheel detection device; 111, support connecting rod two; 112, detection plate two; 12, electric telescopic rod; 13, platform. DETAILED DESCRIPTION

[0056] The preferred embodiments of the present application will be described herein below with reference to the drawings; it should be understood that the preferred embodiments described herein are merely intended to describe and explain the present application, and are not intended to limit the present application.

[0057] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and does not mean to indicate or imply the order or sequence, nor to limit the present application, which is merely to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0058] Embodiment 1, the present application embodiment 1 discloses a kind of automobile four-wheel alignment detection device, as shown in Fig. Figures 1-3 It includes:

[0059] frame 1, two groups of front wheel fixing frame 2, two groups of front wheel fixing frame 2 are symmetrically arranged in the left and right sides of the front part of the frame 1;

[0060] Two groups of rear wheel fixing frame 3 are symmetrically arranged in the left and right sides of the rear part of the frame 1;

[0061] The front wheel detection device is connected to the front wheel fixing frame 2, the rear wheel detection device is connected to the rear wheel fixing frame 3, and the adjustable positioning device is connected in the front wheel fixing frame 2 and the rear wheel fixing frame 3 respectively;

[0062] Controller, display, the controller is electrically connected with front wheel detection device, rear wheel detection device and display respectively.

[0063] Optionally, the front wheel fixing frame 2 is fixedly connected with the left side or the right side of the front part of the frame 1 through the first connecting rod 4;

[0064] The rear part of the frame 1 is provided with a sliding groove 5, the sliding block 6 is connected in the sliding groove 5, the rear wheel fixing frame 3 is fixedly connected with the sliding block 6 through the second connecting rod 7, and the rear part of the frame 1 is connected with the electric telescopic rod 12, and the electric telescopic rod 12 is used to drive the sliding block 6 to slide along the sliding groove 5.

[0065] Optionally, the front wheel fixing frame 2 and the rear wheel fixing frame 3 all include:

[0066] The first box body 21 and the second box body 22 are connected on the side of the first box body 21 close to the rack 1, the side of the mutual connection of the first box body 21 and the second box body 22 is through, and the upper end of the first box body 21 is detachably connected with a first box cover (detachable connection or openable and closable box body); the second box body 22 is internally provided with a front cavity 23, a middle cavity 24 and a rear cavity 25, the upper end of the middle cavity 24 is connected with a second box cover (which can be detachable connection, and the upper end of the middle cavity 24 can be manually opened and closed or automatically opened and closed), and the upper ends of the front cavity 23 and the rear cavity 25 are connected with a third box cover (fixed connection or detachable connection);

[0067] The adjustable positioning device 8 comprises two front and rear symmetrical positioning groups, the positioning group comprises a lead screw 82 extending in the front and rear direction, the lead screw 82 is rotationally connected with the front inner wall of the front cavity 23 or the rear inner wall of the rear cavity 25, a matching sliding block 83 is threadedly sleeved on the lead screw 82, and a positioning column 81 is connected on the side of the matching sliding block 83 close to each other and located in the middle cavity 24; and the lead screw 82 is driven to rotate by the driving mechanism 9. Wherein, the positioning column 81 can be a fixed column or can comprise a rotating drum in CN110749454A, when comprising the rotating drum, the positioning column comprises two connecting blocks fixedly connected with the matching sliding block through a connecting support, and a rotating drum is rotationally connected between the two connecting blocks;

[0068] Optionally, the driving mechanism 9 comprises:

[0069] A driving shell 91 is installed in the first box body 21;

[0070] A matching shaft one 92 is rotationally connected with the front and rear inner walls of the first box body 21 at both ends;

[0071] A driving motor 93 is installed in the driving shell 91;

[0072] A matching shaft two 94 is fixedly connected to the output end of the driving motor 93;

[0073] A matching bevel gear one 95 is fixedly sleeved on the end of the matching shaft two 94 away from the driving motor 93;

[0074] A matching bevel gear two 96 is fixedly sleeved on the matching shaft one 92, and the matching bevel gear one 95 is in meshing transmission with the matching bevel gear two 96;

[0075] Two first pulleys 912 are fixedly sleeved on the front and rear parts of the matching shaft one 92, and the lead screws 82 of the two positioning groups are respectively fixedly sleeved with second pulleys 913, and the two first pulleys 912 are in transmission with the two second pulleys 913 through two belts 914.

[0076] Optionally, the front wheel detection device 10 comprises: a support link 101 connected with the front drive shell 91; a detection plate 102 fixedly connected to one side of the support link 101 close to the positioning column 81, and the detection plate 102 is provided with an offset detection device one;

[0077] The rear wheel detection device 11 comprises: a support link 111 connected with the rear drive shell 91; a detection plate 112 fixedly connected to one side of the support link 111 close to the positioning column 81, and the detection plate is provided with an offset detection device two.

[0078] Optionally, the support link 101 and the support link 111 are further provided with a camera device for detecting the surface quality of the wheels.

[0079] Optionally, after the front wheel fixing frame 2 and the rear wheel fixing frame 3 are installed, the third box cover of the front wheel fixing frame 2 and the rear wheel fixing frame 3 is in a closed state, and the first box cover of the front wheel fixing frame 2 and the rear wheel fixing frame 3, the second box cover of the front wheel fixing frame 2 is in an open state; the second box cover is an automatic opening and closing door (specifically, the automatic opening and closing door comprises a first door body and a second door body, the upper ends of the first door body and the second door body are respectively slidably connected to the upper end or the lower end of the third box cover (at the same time, the upper ends or the lower ends are simultaneously connected), and the first door body and the second door body are driven by the telescopic rod to move close to or away from each other to open the second box cover), and the method comprises the following steps:

[0080] Step 1: move the adjusting sliding block 6 by the electric telescopic rod 12 to match the distance between the front wheel fixing frame 3 and the rear wheel fixing frame 3 with the distance between the front wheels and the rear wheels of the automobile to be detected;

[0081] Step 2: move the automobile to be detected to the automobile four-wheel positioning detection device, and open the second box cover of the rear wheel fixing frame 3 when the front wheel of the automobile completely passes through the rear wheel fixing frame 3 (the second box cover is in a closed state before each detection starts until the front wheel of the automobile completely passes through the rear wheel fixing frame 3, which is convenient for the front wheel to pass through, wherein a jacking mechanism can be arranged between the two positioning columns 81 in the rear wheel fixing frame 3 to jack up the rear wheel to a certain height, which is convenient for the rear wheel to pass through the rear wheel fixing frame);

[0082] Step 3: place the front wheel of the automobile to be detected between the front and rear positioning columns 81 in the front wheel fixing frame 2, and place the rear wheel of the automobile to be detected between the front and rear positioning columns 81 in the rear wheel fixing frame 3;

[0083] Step 4: detect the offset values of the front wheels and the rear wheels of the automobile by the offset detection device one and the offset detection device two, and display the offset values on the display.

[0084] The rack can be directly fixed to the ground in this embodiment; or a lifting device is arranged on the ground, and the rack is fixedly connected to the lifting end of the lifting device to adjust the height of the rack.

[0085] The offset detector one and the offset detector two can be arranged as distance measuring sensors for measuring the distance between the position of the distance measuring sensor and the corresponding point of the wheel to determine the position information / offset information of the wheel on the automobile (the relative position information between the wheels can also be determined according to the position information of each wheel), thereby guiding the automobile repair technician to adjust the wheel positioning parameters;

[0086] The working principle and beneficial effects of the above technical solution are:

[0087] The automobile is moved, so that the front wheels of the automobile to be detected are placed between the front and rear positioning columns 81 in the front wheel fixing frame 2, and the rear wheels of the automobile to be detected are placed between the front and rear positioning columns 81 in the rear wheel fixing frame 3, and the front and rear directions of the wheels are limited by the front and rear direction positioning columns 81; the offset values of the front and rear wheels of the automobile are detected by the offset detector, and the offset values are displayed by the display. Specifically, during positioning, the driving motor 93 is controlled to rotate to drive the cooperating shaft two 94 to rotate, the cooperating shaft one 92 is driven to rotate through the meshing of the cooperating bevel gear one 95 and the cooperating bevel gear two 96, and the cooperating shaft one 92 is driven to rotate through the transmission of the two first pulleys 912, the second pulley 913, and the belt 914, so as to drive the two cooperating sliding blocks 836 on the two front and rear relative screw rods 82 to move away from each other or move close to each other, so as to move the two positioning columns 81 away from each other or close to each other, thereby adjusting the limiting position of the front and rear sides of the wheels to meet the limiting requirements of wheels of different sizes; and the distance between the components (such as the rotating drum in CN110749454A) for positioning the wheels in the existing automobile four-wheel positioning device (such as CN110749454A) cannot be adjusted, and different sizes of wheels cannot be detected.

[0088] In embodiment 2, on the basis of embodiment 1, as shown in Figures 1-3 The driving mechanism 9 further includes:

[0089] The cooperating cylindrical body 97 is arranged on the circumferential side of the annular sliding groove 911.

[0090] The cooperating sliding rod 98 is slidably connected with the annular sliding groove 911.

[0091] The connecting plate 99 is fixedly connected with the cooperating sliding rod 98, and the connecting plate 99 is fixedly connected with one end of the support connecting rod one 101 or the support connecting rod two 111 away from the rack 1.

[0092] The cooperating spring 910 has two ends fixedly connected with the connecting plate 99 and the inner wall of the driving shell 91.

[0093] In this embodiment, the offset detector one or the offset detector two can be set as a pressure sensing column, and a force sensor is arranged on one side of the pressure sensing column for contacting the hub of the wheel. When the pressure sensing column contacts the hub of the wheel, the contact force between the pressure sensing column and the hub of the wheel can be detected by the force sensor, and compared with the reference force. According to the comparison result, it is determined whether the corresponding position of the hub is offset or not.

[0094] The working principle and beneficial effects of the above technical solution are as follows: when the driving motor 93 rotates, the matching cylindrical body 97 on the matching shaft two 94 is driven to rotate, so that the matching sliding rod 98 moves in the annular sliding groove 911, so that the matching sliding rod 98 drives the support connecting rod one 101 or the support connecting rod two 111 to approach the wheel, so that the offset detector one or the offset detector two on the detection plate one 102 or the detection plate two 112 approaches the wheel, and the above contact force detection on the wheel is realized; the above technical solution can realize the positioning of the wheel and the detection of the offset detector one or the offset detector two to the detection position at the same time through the control of the driving motor 93, and the control is convenient.

[0095] In embodiment 3, on the basis of embodiment 1 or 2, as shown in Figures 4-5 The adjustable positioning device 8 further comprises:

[0096] A positioning box 84 is arranged on the upper part of the positioning box 84, and positioning columns 81 are arranged on the front and rear sides of the positioning box 84.

[0097] A support structure is arranged in the positioning box 84 and between the positioning columns 81 on the front and rear sides. The support structure comprises: a support sleeve 86 fixedly connected to the inner wall of the lower end of the positioning box 84; a support column 87 slidably connected in the support sleeve 86, wherein the support column 87 integrally extends an extension segment 88 on the outer side of the lower part; a support spring 89 fixedly connected at both ends to the extension segment 88 and the inner side wall of the support sleeve 86; and a plurality of spring rods 810 fixedly connected at the upper end to the middle part of the lower end of the support column 87 and fixedly connected at the lower end to the inner wall of the positioning box 84.

[0098] The two groups of left-right symmetrical detection mechanisms comprise: a support block 811 fixedly connected with the left or right inner wall of the positioning box 84, the side of the support block 811 close to each other being a slope; a limiting groove 812 vertically arranged on the slope; two first fixed pulleys 813 installed on the front or rear sidewall of the support sleeve 86 in an up-down interval; a mounting block 819 slidingly connected in the limiting groove 812 along a direction perpendicular to the slope, the mounting block 819 being used for mounting a detection device; a matched rack one 814 fixedly connected with the lower end of the mounting block 819; a matched rack two 815 slidingly connected in the limiting groove 812; a matched gear 816 rotatably connected in the limiting groove 812, the matched gear 816 being engaged with the matched rack one 814 and the matched rack two 815 respectively; a pulling block 817 fixedly connected with the lower left or right part of the support column 87; and a connecting pull rope 818 having one end fixedly connected with the lower end of the pulling block 817 and the other end fixedly connected with the lower end of the matched rack two 815, the connecting pull rope 818 being wound around the first fixed pulley 813.

[0099] Optionally, the support column 87 in the embodiment can also be provided as an automatic lifting device (such as a structure in which a support plate is connected to the upper end of a hydraulic cylinder or an air cylinder).

[0100] The detection device can be provided as a camera or a distance measuring sensor, and is used for detecting the wheel (the camera can be used for detecting the surface quality of the wheel, and the distance measuring sensor can be used for further detecting the position information of the wheel); when being the camera, the image between the offset detector one or the offset detector two and the wheel can be conveniently obtained, and analysis is facilitated.

[0101] The working principle and beneficial effects of the above technical solution are as follows:

[0102] 1. In the initial state, the detection device is accommodated in the limiting groove 812, so that the detection device is protected, and the detection device is prevented from being damaged by accident when the wheel enters the positioning box 84;

[0103] 2. When the wheel is located between the positioning columns 81 in the front-rear direction, the wheel is supported on the support column 87, and the spring rod 810 and the support spring 89 can buffer the support column 87 when the wheel falls into the support column 87.

[0104] 3. and under the gravity of the wheel, the support column 87 moves downward, driving the pulling block 817 to move downward, thereby driving the connecting pulling rope 818 to move, so that the two matching toothed bars two 815 move downward, driving the matching gear 816 to rotate, so that the two matching toothed bars one 814 move upward, driving the two detection devices to extend the limiting groove 812, reaching the position between the offset detector one, the offset detector two and the wheel (when the support column 87 moves downward to a certain position, the detection device reaches the target detection position), so as to detect the wheel in the position between the offset detector one, the offset detector two and the wheel.

[0105] In the embodiment 4, on the basis of the embodiment 1 or 2 or 3, the ground at the rear end of the rack 1 is further provided with a platform 13, and the automobile drives into the platform 13 and then drives towards the rack 1; further comprising:

[0106] A distance detection device is arranged on the platform 13 and is used to detect the distance between the center of the wheel of the automobile and the top end of the platform 13;

[0107] A temperature detection device is arranged on the platform 13 and is used to detect the temperature of the wheel;

[0108] A controller is in communication connection with the automobile controller on the automobile, and when the automobile moves on the platform 13, the controller acquires the automobile wheel information transmitted by the automobile controller, and the automobile wheel information includes: the used time length of the automobile wheel and the rated total use time length of the automobile wheel;

[0109] An alarm is electrically connected with the distance detection device, the temperature detection device and the controller, and the controller controls the alarm based on the automobile controller, the distance detection device and the temperature detection device, and the controller controls the alarm to alarm when the alarm evaluation coefficient P is not in the preset range;

[0110] The alarm evaluation coefficient P is calculated based on the automobile controller, the distance detection device, the temperature detection device and the following formula, and the controller controls the alarm to alarm when the alarm evaluation coefficient P is not in the preset range;

[0111]

[0112] D is the outer diameter of the wheel; H is the detection value of the distance detection device, P is the air pressure of the wheel, A is the vertical load borne by the wheel (which is a preset value and is related to the design of the automobile), π is 3.14, R is the radius of curvature of the wheel of the automobile (preferably, it can be the transverse radius of curvature), K1 is the first coefficient (the value is 2-4×10 -8 m2 / N); T2 is the rated total use time length of the wheel, T1 is the used time length of the wheel; t is the unit time; C is the second coefficient (greater than 0 and less than 0.1), B1 is the surface temperature of the wheel, B0 is the reference temperature of the preset wheel, e is the natural constant, and L is the unit length.

[0113] The working principle and beneficial effects of the above technical solution are that before the wheels pass through the front wheel fixing frame and the rear wheel fixing frame, they first pass through the platform 13 for detection, The reference value corresponding to 0.5D-H is based on the influence of temperature on the wheel material and the influence of the service time of the wheel, determines the wheel state related to the distance between the center of the wheel and the top end of the platform 13, so that the calculation is more reliable. When the wheel is abnormal, the distance between the center of the wheel and the top end of the platform 13 will be abnormal, which will affect the driving of the automobile. When the distance between the center of the wheel and the top end of the platform 13 is abnormal, even if an alarm is given to remind detection, the safety of the automobile can be ensured.

[0114] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A vehicle four-wheel alignment detection device, characterized in that, include: The frame (1) and two sets of front wheel fixing brackets (2) are symmetrically arranged on the left and right sides of the front part of the frame (1). Two sets of rear wheel fixing brackets (3) are symmetrically arranged on the left and right sides of the rear of the frame (1); The front wheel mounting bracket (2) is connected to a front wheel detection device, the rear wheel mounting bracket (3) is connected to a rear wheel detection device, and adjustable positioning devices are respectively connected inside the front wheel mounting bracket (2) and the rear wheel mounting bracket (3); A controller and a display, wherein the controller is electrically connected to the front wheel detection device, the rear wheel detection device, and the display, respectively. Both the front wheel retainer (2) and the rear wheel retainer (3) include: The first housing (21) and the second housing (22) are connected to the side of the first housing (21) near the frame (1). The first housing (21) and the second housing (22) are connected to each other on one side. The upper end of the first housing (21) is detachably connected to a first cover. The second housing (22) is provided with a front cavity (23), a middle cavity (24) and a rear cavity (25). The upper end of the middle cavity (24) is connected to a second cover. The upper ends of the front cavity (23) and the rear cavity (25) are connected to a third cover. The adjustable positioning device (8) includes two symmetrical positioning groups, each group comprising: a lead screw (82) extending along the front-rear direction, the lead screw (82) being rotatably connected to the inner wall of the front cavity (23) or the inner wall of the rear cavity (25); a sliding block (83) threaded onto the lead screw (82); and a positioning post (81) connected to the side of the sliding block (83) that is close to each other, the positioning post (81) being located inside the middle cavity (24); the lead screw (82) is driven to rotate by a driving mechanism (9). The drive mechanism (9) includes: The drive housing (91) is installed inside the first housing (21); The first shaft (92) is rotatably connected at both ends to the inner walls of the front and rear sides of the first housing (21); The drive motor (93) is installed inside the drive housing (91); It is fixedly connected to the output end of the drive motor (93) in conjunction with shaft two (94); The first bevel gear (95) is fixedly sleeved on the end of the second shaft (94) away from the drive motor (93); The second bevel gear (96) is fixedly sleeved on the first bevel shaft (92), and the first bevel gear (95) meshes with the second bevel gear (96) for transmission. Two first pulleys (912) are fixedly sleeved on the front and rear of the mating shaft (92), and two second pulleys (913) are fixedly sleeved on the lead screws (82) of the two positioning groups respectively. The two first pulleys (912) are driven by the two second pulleys (913) through two belts (914); The adjustable positioning device (8) further includes: Positioning box (84), with positioning column (81) inlets provided on the front and rear sides of the upper part of the positioning box (84); A support structure is set inside the positioning box (84) and between the positioning columns (81) on the front and rear sides. The support structure includes: a support sleeve (86) fixedly connected to the inner wall of the lower end of the positioning box (84); a support column (87) slidably connected inside the support sleeve (86), with an extension section (88) integrally extended on the lower outer side of the support column (87); a support spring (89) with both ends fixedly connected to the extension section (88) and the inner wall of the support sleeve (86) respectively; and a plurality of spring rods (810) with the upper end fixedly connected to the middle of the lower end of the support column (87) and the lower end of the spring rods (810) fixedly connected to the inner wall of the positioning box (84). Two sets of symmetrical detection mechanisms, each comprising: a support block (811) fixedly connected to the inner wall of the left or right side of the positioning box (84), the side of the support block (811) that is close to each other being an inclined surface; a limiting groove (812) vertically disposed on the inclined surface; two first fixed pulleys (813) installed at intervals on the front or rear side wall of the support sleeve (86); a mounting block (819) slidably connected to the limiting groove (812) along a direction perpendicular to the inclined surface, the mounting block (819) being used to mount detection devices; and a gear rack (814) fixedly connected to the mounting block (812). 19) Lower end; meshing rack two (815), slidably connected in the limiting groove (812); meshing gear (816), rotatably connected in the limiting groove (812), meshing gear (816) with meshing rack one (814) and meshing rack two (815) respectively; pulling block (817), fixedly connected to the lower left or right part of the support column (87); connecting pull rope (818), one end fixedly connected to the lower end of the pulling block (817), the other end of the connecting pull rope (818) fixedly connected to the lower end of meshing rack two (815), the connecting pull rope (818) is wrapped around the first fixed pulley (813).

2. The vehicle four-wheel alignment detection device according to claim 1, characterized in that, The front wheel fixing bracket (2) is fixedly connected to the left or right side of the front part of the frame (1) via the first connecting rod (4); The frame (1) is provided with a slide groove (5) at the rear, and a slider (6) is connected in the slide groove (5). The rear wheel fixing frame (3) is fixedly connected to the slider (6) through the second connecting rod (7). The frame (1) is connected with an electric telescopic rod (12) at the rear, and the electric telescopic rod (12) is used to drive the slider (6) to slide along the slide groove (5).

3. The vehicle four-wheel alignment detection device according to claim 1, characterized in that, The front wheel detection device (10) includes: a support link (101) connected to the front drive housing (91); a detection plate (102) fixedly connected to the side of the support link (101) near the positioning post (81), and an offset detection device is provided on the detection plate (102). The rear wheel detection device (11) includes: a second support link (111) connected to the rear drive housing (91); and a second detection plate (112) fixedly connected to the side of the second support link (111) near the positioning post (81), wherein the second offset detection device is provided on the detection plate.

4. The vehicle four-wheel alignment detection device according to claim 1, characterized in that, The drive mechanism (9) also includes: The cylinder (97) is fitted with an annular groove (911) on its circumferential side; The sliding rod (98) is slidably connected to the annular groove (911); The connecting plate (99) is fixedly connected to the sliding rod (98), and the connecting plate (99) is fixedly connected to the end of the support rod one (101) or support rod two (111) away from the frame (1); The spring (910) is fixedly connected at both ends to the inner walls of the connecting plate (99) and the drive housing (91), respectively.

5. The vehicle four-wheel alignment detection device according to claim 3, characterized in that, Camera devices are also installed on the first support rod (101) and the second support rod (111).

6. The vehicle four-wheel alignment detection device according to claim 1, characterized in that, A platform (13) is also provided on the ground at the rear end of the frame (1). The car drives onto the platform (13) and then drives towards the frame (1); it also includes: A distance detection device is installed on the platform (13) to detect the distance between the center of the car wheel and the top of the platform (13); A temperature detection device is installed on the platform (13) to detect the temperature of the wheels; The controller communicates with the vehicle controller on the vehicle. When the vehicle moves on the platform (13), the controller obtains the vehicle wheel information transmitted by the vehicle controller. The vehicle wheel information includes: the usage time of the vehicle wheel and the rated total usage time of the vehicle wheel. The alarm, wherein the controller is electrically connected to the distance detection device, the temperature detection device, and the alarm, and the controller controls the alarm to sound based on the vehicle controller, the distance detection device, and the temperature detection device, including: Based on the vehicle controller, distance detection device, temperature detection device and the following formula, the alarm evaluation coefficient P is calculated. When P is not within the preset range, the controller controls the alarm to sound an alarm. D is the outer diameter of the wheel; H is the value detected by the distance detection device; P is the air pressure of the wheel; A is the vertical load on the wheel; π is 3.14; R is the radius of curvature of the car wheel; K1 is the first coefficient; T2 is the rated total service time of the wheel; T1 is the service time of the wheel; t is the unit time; C is the second coefficient; B1 is the surface temperature of the wheel; B0 is the preset reference temperature of the wheel; e is the natural constant; L is the unit length.

7. A testing method for an automobile four-wheel alignment testing device as described in any one of claims 1 to 6, characterized in that, After the front wheel mounting bracket (2) and the rear wheel mounting bracket (3) are installed, the third cover of the front wheel mounting bracket (2) and the rear wheel mounting bracket (3) is in a closed state, and the first cover of the front wheel mounting bracket (2) and the rear wheel mounting bracket (3) and the second cover of the front wheel mounting bracket (2) are in an open state; the second cover is an automatic opening and closing door, and the method includes the following steps: Step 1: Move the adjusting slider (6) by using the electric telescopic rod (12) to make the distance between the front wheel fixing bracket (7) and the rear wheel fixing bracket (3) match the distance between the front and rear wheels of the car to be tested; Step 2: Move the car to be tested onto the car four-wheel alignment testing device. After the front wheels of the car have completely passed the rear wheel fixing bracket (3), open the second cover of the rear wheel fixing bracket (3). Step 3: Place the front wheels of the car to be tested between the front and rear positioning posts (81) in the front wheel mounting bracket (2), and place the rear wheels of the car to be tested between the front and rear positioning posts (81) in the rear wheel mounting bracket (3). Step 4: Detect the offset values ​​of the front and rear wheels of the car using offset detector one and offset detector two, and display the offset values ​​on the display.

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