Vehicle measurement system

Abstract

A vehicle measurement system (100), comprising a base (1), a column (3), a lifting drive assembly (9) and a crossbeam (7). The base (1) comprises a base body (11) and a first adjustment assembly (12) disposed thereon, the base body (11) being configured to be disposed on a fixed surface and to serve as a support for the entire vehicle measurement system (100); the column (3) comprises a column body (31) and a second adjustment assembly (33) disposed thereon, the column body (31) being connected to the first adjustment assembly (12), and the first adjustment assembly (12) being configured to drive the column body (31) to rotate about a first axis P which is parallel to a third direction Z; the lifting drive assembly (9) is disposed on the column body (31), and is connected to the second adjustment assembly (33) and is configured to drive the second adjustment assembly (33) to translate along the third direction Z; and the second adjustment assembly (33) is configured to connect the crossbeam (7) and is configured to drive the crossbeam (7) to rotate about a second axis Q and a third axis M, the second axis Q being parallel to a first direction X, the third axis M being perpendicular to the first direction X, and the first direction X and the third direction Z being perpendicular to each other.

Description

A vehicle measurement system

[0001] This application claims priority to Chinese Patent Application No. 202411564708.X, filed on November 1, 2024, entitled "A Vehicle Measurement System", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of vehicle inspection technology, and in particular to a vehicle measurement system. Background Technology

[0003] Four-wheel alignment involves adjusting the alignment parameters of the four wheels (two front wheels and two rear wheels) to optimize the geometry between the vehicle's suspension system and the wheels. ADAS (Advanced Driver Assistant Systems) calibration refers to using external measuring equipment to calibrate the position, function, and parameters of the vehicle's sensors (such as cameras, radar, and ultrasonic sensors) to ensure they can accurately perceive information about the vehicle's surroundings.

[0004] Before performing four-wheel alignment and ADAS calibration on a vehicle, it is necessary to ensure the relative position between the calibration structure and the vehicle under test. This requires that the calibration structure be able to make fine translation adjustments in multiple different directions and fine swing adjustments in multiple different planes.

[0005] Therefore, the current problem with vehicle measurement systems is that the integration of multiple adjustment structures results in a complex overall structure, making assembly and maintenance difficult. Furthermore, the different adjustment structures are often interconnected in terms of structure and adjustment results. Multiple adjustment structures need to be operated sequentially and individually, often requiring repeated adjustments, which leads to inconvenience and low efficiency. Technical issues

[0006] The purpose of this application is to provide a vehicle measurement system that aims to solve the technical problem that existing adjustment devices are complex in structure and highly interconnected, resulting in inconvenient adjustment. Technical solutions

[0007] This application embodiment is implemented as follows: a vehicle measurement system includes:

[0008] A base, the base including a base body and a first adjustment component disposed on the base body;

[0009] The column includes a column body and a second adjustment component disposed on the column body. The column body is connected to the first adjustment component. The first adjustment component is used to drive the column body to rotate about a first axis, which is parallel to a third direction.

[0010] A lifting drive assembly, disposed on the column body, is used to drive the second adjusting assembly to translate along the third direction; and

[0011] A crossbeam, the second adjusting assembly is connected to the crossbeam and is used to drive the crossbeam to rotate about a second axis and about a third axis; the second axis is parallel to a first direction, and the third axis is perpendicular to the first direction; the first direction is perpendicular to the third direction.

[0012] In one embodiment, the first adjusting component includes a first rotating member, which includes a meshing first worm and a first worm wheel; the central axis of the first worm wheel is the first axis, and the first worm wheel is rotatably mounted on the base body; the column body is coaxially connected to the first worm wheel.

[0013] In one embodiment, the first adjustment component further includes a first translation member and a second translation member. The first translation member includes a first lead screw and a first nut engaged with each other, and a first support plate fixedly connected to the first nut. The second translation member includes a second lead screw and a second nut engaged with each other, and a second support plate fixedly connected to the second nut.

[0014] The first lead screw has an axial direction parallel to the first direction and is rotatably mounted on the base body; the second lead screw has an axial direction parallel to the second direction and is rotatably mounted on the first support plate; the first worm gear is rotatably mounted on the second support plate; the second direction is perpendicular to the first direction and the third direction.

[0015] In one embodiment, the first translation member further includes a first driving member, which is disposed on the base body and connected to the first lead screw; the second translation member further includes a second driving member, which is disposed on the first support plate and connected to the second lead screw; the first rotation member further includes a third driving member, which is disposed on the second support plate and connected to the first worm gear.

[0016] In one embodiment, the system further includes a main control module connected to the lifting drive assembly, the first drive component, the second drive component, and the third drive component, for controlling the lifting drive assembly, the first drive component, the second drive component, and the third drive component.

[0017] In one embodiment, the column body includes a fixed column and a lifting column. The fixed column is connected to the first adjusting component, and the lifting column is slidably connected to the fixed column along the third direction. The lifting drive component includes a lifting member and a drive chain. The lifting member is fixedly connected to the fixed column and includes a push rod capable of moving up and down in the third direction. One end of the drive chain is connected to the fixed column, the drive chain slides around the top of the lifting member, and the other end of the drive chain is fixedly connected to the second adjusting component.

[0018] In one embodiment, the column body further includes a bracket, the bracket being fixedly connected to the second adjustment component and the other end of the drive chain, guide rollers being provided on opposite sides of the bracket, the lifting column being sleeved on the fixed column, and guide grooves being provided on opposite sides of the lifting column along a third direction, the guide rollers being rotatably disposed within the guide grooves.

[0019] In one embodiment, the second adjustment component includes: a fixed plate, a movable plate, a first fine-tuning module, and a second fine-tuning module; the fixed plate is fixedly connected to the lifting drive component, and the movable plate is rotatably connected to the fixed plate about the second axis; the first fine-tuning module is connected between the fixed plate and the movable plate and is used to drive the movable plate to rotate about the second axis; the second fine-tuning module is disposed on the movable plate and is used to connect to the crossbeam, and the second fine-tuning module is used to drive the crossbeam to rotate about the third axis.

[0020] In one embodiment, the first fine-tuning module includes a third lead screw, a third nut, and a connecting rod. The third lead screw is rotatably mounted on the fixed plate, and the central axis of the third lead screw is perpendicular to the second direction. The third nut is mounted on the third lead screw. The first end of the connecting rod is rotatably connected to the fixed plate about a fourth axis, and the second end of the connecting rod is rotatably connected to the third nut about a fifth axis. Both the fourth and fifth axes are parallel to the second axis. The second direction is perpendicular to the first direction and the third direction.

[0021] In one embodiment, the first fine-tuning module further includes a third guide rail and a third slider. The third guide rail is fixedly installed on the movable plate and parallel to the third lead screw, and the third slider is disposed on the third guide rail. The second end of the connecting rod is rotatably connected to the third slider around the fifth axis.

[0022] In one embodiment, the second fine-tuning module includes a meshing second worm and a second worm wheel. The second worm is rotatably mounted on the movable plate, and the central axis of the second worm is perpendicular to the first direction. The second worm wheel is rotatably mounted on the movable plate, and the central axis of the second worm wheel is perpendicular to the second direction. The crossbeam is fixedly connected to the second worm wheel. The second direction is perpendicular to the first direction and the third direction.

[0023] In one embodiment, the crossbeam includes a crossbeam body and an inclination detection element disposed on the crossbeam body. The inclination detection element is used to measure the tilt angle of the crossbeam body relative to at least one of a first direction, a second direction, and a third direction, wherein the second direction is perpendicular to the first direction and the third direction. Beneficial effects

[0024] The vehicle measurement system provided in this application has the following advantages:

[0025] The vehicle measurement system provided in this application includes a base, a column, a lifting drive assembly, and a crossbeam. The base includes a base body and a first adjustment assembly disposed on the base body. The column includes a column body and a second adjustment assembly disposed on the column body. The column body is connected to the first adjustment assembly, which drives the column body to rotate around a first axis. The lifting drive assembly is disposed on the column body and connected to the second adjustment assembly, driving the second adjustment assembly to translate along a third axis. The second adjustment assembly is connected to the crossbeam and drives the crossbeam to rotate around the first axis and around a third axis. Multiple adjustment structures are distributed, simplifying the structures of the first adjustment assembly, the lifting drive assembly, and the second adjustment assembly. This reduces the structural correlation between the adjustment structures and the correlation between adjustment results, avoiding the need for repeated adjustments due to structural correlation, thus improving adjustment efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a schematic diagram of the overall structure of the vehicle measurement system provided in an embodiment of this application;

[0028] Figure 2 is an exploded view of the structure of the base in the vehicle measurement system provided in the embodiment of this application;

[0029] Figure 3 is a schematic diagram of the structure of the first adjustment component in the vehicle measurement system provided in an embodiment of this application;

[0030] Figure 4 is a schematic diagram of the structure of the column in the vehicle measurement system provided in this embodiment of the application;

[0031] Figure 5 is an exploded structural diagram of the column in the vehicle measurement system provided in the embodiment of this application;

[0032] Figure 6 is a schematic diagram of the structure of the second adjustment component in the vehicle measurement system provided in an embodiment of this application;

[0033] Figure 7 is an exploded structural diagram of a portion of the structure of the second adjustment component in the vehicle measurement system provided in an embodiment of this application.

[0034] Figure 8 is a partial front view of the structure of the second adjustment component in the vehicle measurement system provided in an embodiment of this application;

[0035] Figure 9 is a simplified structural diagram of the first fine-tuning module of the second adjustment component in the vehicle measurement system provided in the embodiment of this application.

[0036] The markings in the diagram mean:

[0037] 100-Vehicle Measurement System;

[0038] 1-Base, 11-Base body, 111-Upper shell, 112-Lower shell;

[0039] 12-First adjusting component, 121-First translation component, 1211-First driving component, 1212-First lead screw, 1213-First nut, 1214-First support plate, 1215-First guide rail;

[0040] 123-Second translation component, 1231-Second driving component, 1232-Second lead screw, 1233-Second nut, 1234-Second support plate, 1235-Second guide rail;

[0041] 125-First rotating component, 1251-Third driving component, 1252-First worm gear, 1253-First worm wheel;

[0042] 3-Column, 31-Column body, 311-Fixed column, 312-Lifting column, 3120-Guide groove, 313-Bracket, 314-Guide roller;

[0043] 33-Second adjustment component;

[0044] 331-Fixing plate, 3311-First fixing block;

[0045] 332-Modible plate, 3321-Second fixed block;

[0046] 333-First fine-tuning module, 3331-First handwheel, 3332-First bevel gear, 3333-Third lead screw, 3334-Third nut, 3335-Second bevel gear, 3336-Third guide rail, 3337-Third slider, 3338-Connecting rod, 3340-Connecting rod, 3341-First rotating rod;

[0047] 335-Second fine-tuning module, 3351-Second handwheel, 3352-Second worm gear, 3353-Second worm wheel, 3354-Third bevel gear, 3355-Fourth bevel gear, 3356-Third support plate, 3357-Second rotating rod;

[0048] 7-Crossbeam, 71-Crossbeam body, 72-Image acquisition module, 73-Calibration component;

[0049] 81-Range measuring instrument;

[0050] 82 - Electrical control box; 83 - Main control module;

[0051] 9-Lifting drive assembly, 91-Lifting component, 92-Drive chain;

[0052] X - First direction, Y - Second direction, Z - Third direction, P - First axis, Q - Second axis, M - Third axis, N - Fourth axis, L - Fifth axis. Embodiments of the present invention

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0054] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly fixed to or set on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the purpose of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent. The terms "first" and "second" are used only for the purpose of description and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly specified.

[0055] To illustrate the technical solutions described in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0056] Please refer to Figure 1. This application embodiment provides a vehicle measurement system 100, which includes a base 1, a column 3, a lifting drive assembly 9, and a crossbeam 7. As shown in Figure 2, the base 1 includes a base body 11 and a first adjustment component 12 disposed on the base body 11. The base body 11 is used to be placed on a fixed surface such as the ground to support the entire vehicle measurement system 100. As shown in Figures 4 to 6, the column 3 includes a column body 31 and a second adjustment component 33 disposed on the column body 31. The column body 31 is connected to the first adjustment component 12. The first adjustment component 12 is used to drive the column body 31 to rotate around a first axis P (see Figure 3). The first axis P is parallel to the third direction Z. As shown in Figures 4 and 5, the lifting drive component 9 is disposed on the column body 31 and connected to the second adjustment component 33. It is used to drive the second adjustment component 33 to translate along the third direction Z. The second adjustment component 33 is used to connect the crossbeam 7 and to drive the crossbeam 7 to rotate around a second axis Q and around a third axis M (see Figure 7). The second axis Q is parallel to the first direction X, and the third axis M is perpendicular to the first direction X. The first direction X and the third direction Z are perpendicular to each other.

[0057] Thus, through the cooperation of the first adjustment component 12, the lifting drive component 9, and the second adjustment component 33, the crossbeam 7 can translate along the third direction Z, rotate around the first axis P, rotate around the second axis Q, and rotate around the third axis M, realizing the adjustment of the crossbeam 7 in multiple dimensions, enabling the crossbeam 7 to be adjusted to the required position and posture to meet the needs of vehicle measurement.

[0058] In the multiple adjustment structures used to adjust the position and posture of the crossbeam 7, assuming that one dimension of adjustment corresponds to one set of adjustment structures, in this embodiment, the first adjustment component 12 (corresponding to at least one set of adjustment structures) is set on the base body 11, the lifting drive component 9 (corresponding to at least one set of adjustment structures) is set on the column 3, and the second adjustment component 33 (corresponding to at least two sets of adjustment structures) is set on the lifting drive component 9. This allows the multiple adjustment structures to be distributed, and the structures of the first adjustment component 12, the lifting drive component 9, and the second adjustment component 33 can be simplified. At the same time, this reduces the structural correlation between the adjustment structures, thereby reducing the correlation between the adjustment results and avoiding the problem of repeated and multiple adjustments due to the correlation of the adjustment structures, which is beneficial to improving the adjustment efficiency.

[0059] In addition, the first adjustment component 12, the lifting drive component 9, and the second adjustment component 33 are arranged separately, which can reduce the difficulty of assembling and maintaining the first adjustment component 12, the lifting drive component 9, and the second adjustment component 33.

[0060] Referring to Figures 1 and 2, in this vehicle measurement system 100, the crossbeam 7 further includes multiple image acquisition modules 72 and calibration components 73. The image acquisition modules 72 are respectively disposed at opposite ends of the crossbeam body 71 along the first direction X, and the calibration components 73 are arranged on the crossbeam body 71. During the vehicle measurement process, the image acquisition modules 72 are used to acquire image information of vehicle components (such as the four wheels), and the calibration components 73 are used as reference points for the vehicle's sensing system to detect and provide feedback on the accuracy of the vehicle's sensing system.

[0061] In one embodiment, the first adjustment component 12 is also used to drive the column body 31 to move along a first direction X and a second direction Y. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0062] In this embodiment, the first direction X, the second direction Y, and the third direction Z are arranged perpendicularly to each other, and their specific directions are not limited. For example, as shown in Figures 1 and 2, for ease of description and understanding, the second direction Y is defined as the direction from the column 3 to the vehicle, with the driver's seat as a reference. The second direction Y is the front-to-back direction, the first direction X is the left-to-right direction, and the third direction Z is the vertical direction.

[0063] In one embodiment, at each end of the crossbeam body 71 along the first direction X, the image acquisition module 72 includes two cameras. The two cameras of the image acquisition module 72 correspond to two wheels on one side of the vehicle to be inspected. For example, the two cameras located at the left end of the crossbeam 7 are used to acquire image information of the left front wheel and the left rear wheel.

[0064] One or more calibration elements 73 may be provided on the crossbeam body 71. Multiple calibration elements 73 are arranged at intervals along the first direction X on the crossbeam body 71, as shown in Figure 1. Furthermore, at least one calibration element 73 may be able to slide along the first direction X on the crossbeam body 71 to meet the measurement requirements of different components of the vehicle under inspection.

[0065] Please refer to Figures 2 and 3. In one embodiment, the first adjustment component 12 includes a first translation component 121, a second translation component 123, and a first rotation component 125. The first translation component 121 is disposed on the base body 11, the second translation component 123 is disposed on the first translation component 121, and the first rotation component 125 is disposed on the second translation component 123. The first translation component 121 can drive the second translation component 123 and the first rotation component 125 to reciprocate in the left-right direction. The second translation component 123 can drive the first rotation component 125 to move in the front-back direction. The first rotation component 125 can drive the column 3 to rotate around the first axis P.

[0066] Specifically, as shown in Figure 3, the first translation member 121 includes a first lead screw 1212 and a first nut 1213 engaged, and a first support plate 1214 fixedly connected to the first nut 1213; the second translation member 123 includes a second lead screw 1232 and a second nut 1233 engaged, and a second support plate 1234 fixedly connected to the second nut 1233; the first rotating member 125 includes a first worm gear 1252 and a first worm wheel 1253 engaged. The central axis of the first lead screw 1212 is parallel to the first direction X. The first lead screw 1212 is rotatably mounted on the base body 11 around its own central axis. The first nut 1213 is slidably mounted on the base body 11 along the first direction X. The central axis of the second lead screw 1232 is parallel to the second direction Y. The second lead screw 1232 is rotatably mounted on the first support plate 1214 around its own central axis. The second nut 1233 is slidably mounted on the first support plate 1214 along the second direction Y. The lower end of the column body 31 is coaxially connected to the first worm gear 1253. The central axis of the first worm gear 1253 is the first axis P. The first worm gear 1253 is rotatably mounted on the second support plate 1234 around the first axis P. The central axis of the first worm 1252 is perpendicular to the first axis P. The first worm 1252 is rotatably mounted on the second support plate 1234 around its own central axis.

[0067] The rotation of the first lead screw 1212 can be converted into the translation of the first nut 1213 along the first direction X, thereby driving the first support plate 1214 to reciprocate along the first direction X; the rotation of the second lead screw 1232 can be converted into the translation of the second nut 1233 along the second direction Y, thereby driving the second support plate 1234 to reciprocate along the second direction Y; the rotation of the first worm 1252 can be converted into the rotation of the first worm wheel 1253 perpendicular to it, thereby driving the column 3 to rotate around the first axis P.

[0068] Referring to Figure 3, in one embodiment, the first translation member 121 further includes a first driving member 1211, the second translation member 123 further includes a second driving member 1231, and the first rotating member 125 further includes a third driving member 1251. The first driving member 1211 is fixedly mounted on the base body 11, and its output end is connected to the first lead screw 1212 for driving the first lead screw 1212 to rotate; the second driving member 1231 is fixedly mounted on the first support plate 1214, and its output end is connected to the second lead screw 1232 for driving the second lead screw 1232 to rotate; the third driving member 1251 is fixedly mounted on the second support plate 1234, and its output end is connected to the first worm gear 1252 for driving the first worm gear 1252 to rotate.

[0069] The rotation of the first lead screw 1212, the second lead screw 1232, and the first worm gear 1252 is controlled by the first drive member 1211, the second drive member 1231, and the third drive member 1251, eliminating the need for manual adjustment and reducing labor intensity. Furthermore, since the base 1 is typically low in height, the first lead screw 1212, the second lead screw 1232, and the first worm gear 1252 are positioned low, and controlling their rotation via the first drive member 1211, the second drive member 1231, and the third drive member 1251 avoids the inconvenience of operators having to bend over repeatedly.

[0070] The first driving component 1211, the second driving component 1231, and the third driving component 1251 can all be motors.

[0071] In one embodiment, as shown in FIG1, the vehicle measurement system 100 may include a main control module 83, which is fixedly mounted on the column body 31 and maintained at a certain height, optionally at a fixed height, for operation by an operator. The main control module 83 is connected to the first drive component 1211, the second drive component 1231, and the third drive component 1251, and the operator can operate the start and stop of the first drive component 1211, the second drive component 1231, and the third drive component 1251 through the main control module 83.

[0072] In addition, the main control module 83 can be connected to the lifting drive assembly 9 to control the start and stop of the lifting drive assembly 9. Specifically, the main control module 83 is connected to the lifting member 91 of the lifting drive assembly 9 and controls the raising and lowering of the push rod of the lifting member 91.

[0073] Furthermore, in one embodiment, the vehicle measurement system 100 may also include a control terminal (not shown), which is connected to the main control module 83 via wired or wireless communication. An operator can remotely control the main control module 83 from the control terminal, thereby controlling the aforementioned first translation member 121, second translation member 123, and first rotation member 125.

[0074] Referring to Figure 3, the first translation member 121 further includes one or more first guide rails 1215 and a first slider (not shown) arranged along the first direction X. The first guide rails 1215 are disposed on the base body 11, for example, on the surface of the lower shell 112 of the base body 11. The first slider is slidably disposed on the first guide rails 1215, and the first support plate 1214 is also fixedly disposed on the first slider. The second translation member 123 further includes multiple second guide rails 1235 and a second slider (not shown) arranged along the second direction Y. The second guide rails 1235 are fixedly disposed on the first support plate 1214, and the second slider is slidably disposed on the second guide rails 1235. The second support plate 1234 is also fixedly disposed on the second slider.

[0075] As shown in Figure 2, a generally enclosed accommodating space is defined between the lower shell 112 and the upper shell 111 in the base body 11. The first translation member 121, the second translation member 123, and the first rotating member 125 are disposed within this accommodating space. The first adjusting assembly 12 may also include a connecting member (not shown), which is fixedly connected between the first worm gear 1253 and the column body 31, and passes through the upper shell 111. A rotating bearing (not shown) may be provided between the outer periphery of the connecting member and the upper shell 111 to provide support for the rotation of the connecting member and reduce the friction between the connecting member and the base body 11.

[0076] The base body 11 needs to maintain the vertical stability of the entire vehicle measurement system 100, therefore, it needs to have a certain area and weight. In this embodiment, the first adjustment component 12 is placed within the accommodating space of the base body 11, which makes good use of the area and volume of the base body 11. The first adjustment component 12 does not need to occupy space outside the base body 11; it also provides for the overall weight of the base 1, and the center of gravity of the base 1 can be kept at a low position.

[0077] In addition, the first adjustment component 12 does not need to rise or fall with the column body 31, which further reduces the energy consumption of the entire vehicle measurement system 100.

[0078] Next, referring to Figures 4 and 5, the column body 31 includes a fixed column 311 and a lifting column 312. The lower end of the fixed column 311 is fixedly connected to the connector of the first adjusting component 12 and remains fixed in the third direction Z. The lifting column 312 is slidably connected to the fixed column 311 in the third direction Z. The lifting drive component 9 is disposed on the fixed column 311 and is used to drive the lifting column 312 to rise and fall. The second adjusting component 33 is disposed on the lifting column 312 to rise and fall with the lifting column 312, thereby realizing the lifting and adjusting of the crossbeam 7.

[0079] In this embodiment, the lifting and lowering of the column body 31 is achieved by the relative sliding of the lifting column 312 and the fixed column 311. On the one hand, the column body 31 has a variable height. For example, when transporting the vehicle measurement system 100, the lifting column 312 can be lowered to the lowest point to facilitate storage and transportation.

[0080] Please refer to Figures 4 and 5 for details. In one embodiment, the lifting drive assembly 9 includes a lifting member 91 and a drive chain 92. The lifting member 91 is fixedly connected to the fixed column 311 and has a push rod that can lift and lower away from the base 1 in a third direction Z. One end of the drive chain 92 is connected to the fixed column 311 and slides around the top of the lifting member 91 (for example, the top of the lifting member 91 is provided with a pulley). The other end of the drive chain 92 is fixedly connected to the second adjustment assembly 33.

[0081] Thus, when the push rod of the lifting member 91 rises a certain distance, the portions of the drive chain 92 located on both sides of the lifting member 91 rise and fall by the same distance, and the second adjusting component 33 moves twice that distance. The purpose of this arrangement is to achieve a large-distance movement of the second adjusting component 33 through a small movement of the lifting member 91, which is beneficial to further reduce the height of the fixed column 311 in the third direction Z, and thus, to reduce the overall height and volume of the vehicle measuring system 100.

[0082] The form of the drive chain 92 is not limited; it can be a chain, a wire rope, or a rope of other materials, as long as it can bear the tension that causes the second adjusting component 33 to rise.

[0083] One end of the drive chain 92 connected to the fixed column 311 is located at the rear of the fixed column 311, and the other end of the drive chain 92 is located at the front of the fixed column 311. The second adjustment component 33 is located at the front of the fixed column 311.

[0084] Please refer to Figure 5. The column 3 also includes a bracket 313 and a guide roller 314. The bracket 313 is located on the front side of the fixed column 311 and is fixedly connected to the rear side of the second adjusting component 33 and the other end of the drive chain 92. The bracket 313 is connected to the guide roller 314. The lifting column 312 is provided with a guide groove 3120 opened in the third direction Z, and the guide roller 314 is located in the guide groove 3120. In this way, the other end of the drive chain 92 drives the bracket 313 and the second adjusting component 33 to rise together. The cooperation between the guide roller 314 and the guide groove 3120 realizes the guidance of the movement of the bracket 313 in the third direction Z.

[0085] Furthermore, by setting the shape of the guide roller 314, such as an I-shape, and having it pass through the lifting column 312, the relative position between the bracket 313 and the lifting column 312 can be restricted, preventing the guide roller 314 from coming out of the guide groove 3120.

[0086] In one alternative embodiment, as shown in Figures 4 and 5, the lifting column 312 can be configured to slide and fit the fixed column 311.

[0087] In one optional embodiment, as shown in Figure 5, guide rollers 314 are disposed on opposite sides of the bracket 313 along the first direction X, and guide grooves 3120 are formed on opposite sides of the lifting column 312 along the first direction X. In other embodiments, guide rollers 314 and guide grooves 3120 may be disposed in other locations, such as opposite sides in other directions, or multiple sides.

[0088] Please refer to Figures 4 and 5. The fixed column 311 has a hollow structure with an opening at its upper end. The lifting member 91 is disposed inside the fixed column 311, and the top of the lifting member 91 can pass through the upper opening of the fixed column 311. The purpose of this arrangement is to utilize the internal space of the fixed column 311, while the fixed column 311 can provide some protection for the lifting member 91. In other embodiments, the lifting column 312 can be arranged side by side with the fixed column 311 on one side.

[0089] Next, please refer to Figures 6 to 8. In one embodiment, the second adjustment component 33 includes: a fixed plate 331, a movable plate 332, a first fine-tuning module 333, and a second fine-tuning module 335. The fixed plate 331 is fixedly connected to the drive chain 92 of the lifting drive component 9 via a bracket 313. The movable plate 332 is rotatably connected to the fixed plate 331 around the second axis Q. The first fine-tuning module 333 is connected between the fixed plate 331 and the movable plate 332 and is used to drive the movable plate 332 to rotate around the second axis Q. The second fine-tuning module 335 is disposed on the movable plate 332 and is used to be fixedly connected to the crossbeam 7. The second fine-tuning module 335 is used to drive the crossbeam 7 to rotate around the third axis M.

[0090] The rotation of the crossbeam 7 around the second axis Q is manifested as the crossbeam 7 pitching back and forth, and the rotation of the crossbeam 7 around the third axis M is manifested as the crossbeam 7 swinging up and down on both sides.

[0091] In this embodiment, the second adjustment component 33 is used to drive the crossbeam 7 to rotate around the second axis Q and around the third axis M. These two rotations are separate from the translation of the crossbeam 7 in the first direction X and the second direction Y. The crossbeam 7 does not need to perform translational movements in the first direction X and the second direction Y on the second adjustment component 33. Therefore, it will not affect the rotation of the crossbeam 7, nor will it affect the operation of the first fine-tuning module 333 and the second fine-tuning module 335 in the second adjustment component 33.

[0092] In contrast, assuming the second adjustment component 33 can also drive the crossbeam 7 to translate in the first direction X, if the midpoint of the crossbeam 7 in the first direction X is not aligned with the second adjustment component 33, then when the crossbeam 7 is adjusted for pitch, the distances between the image acquisition modules 72 at both ends of the crossbeam body 71 and the vehicle under inspection will be different, resulting in different images and affecting the detection results. Therefore, pitch adjustment can only be performed after ensuring that the crossbeam 7 is properly adjusted along the first direction X.

[0093] Similarly, assuming that the second adjustment component 33 can also drive the crossbeam 7 to translate in the first direction X, if the midpoint of the crossbeam 7 in the first direction X is not aligned with the second adjustment component 33, then when the crossbeam 7 swings up and down, the distance between the image acquisition modules 72 at both ends of the crossbeam body 71 and the vehicle to be inspected will be different, affecting the detection results.

[0094] In this embodiment, the second fine-tuning module 335 is disposed on the movable plate 332 and fixedly connected to the crossbeam 7 to drive the crossbeam 7 to rotate around the third axis M. Therefore, the second fine-tuning module 335 can be fixedly connected to the midpoint of the crossbeam 7 along the first direction X to ensure that the left and right sides of the crossbeam 7 remain symmetrical during pitch adjustment and vertical swing. This arrangement can improve adjustment efficiency. During the translation of the crossbeam along the first direction X, the translation along the second direction Y, the translation along the third direction Z, and the rotation around the first axis P, the left and right sides of the crossbeam 7 also remain symmetrical.

[0095] Furthermore, the structure of the second adjustment component 33 can be simplified and its size can be reduced.

[0096] Please refer to Figures 6 to 8 for details. The first fine-tuning module 333 includes a third lead screw 3333, a third nut 3334, and a connecting rod 3338. The third lead screw 3333 is rotatably mounted on the movable plate 332. The central axis of the third lead screw 3333 is perpendicular to the first direction X. The third nut 3334 is engaged with the third lead screw 3333. Please refer to Figure 9 for further details. The first end of the connecting rod 3338 is rotatably mounted on the fixed plate 331 around the fourth axis N. The other end of the connecting rod 3338 is rotatably connected to the third nut 3334 around the fifth axis L. Both the fifth axis L and the fourth axis N are parallel to the second axis Q.

[0097] When the third lead screw 3333 rotates, the third nut 3334 moves along the third lead screw 3333. Referring to Figure 9, since the third nut 3334 is rotatably connected to the other end of the connecting rod 3338, it pushes the movable plate 332 to rotate around the second axis Q to accommodate the length of the connecting rod 3338. As shown in Figure 9, when the third nut 3334 slides upward along the third lead screw 3333, the angle between the movable plate 332 and the fixed plate 331 decreases.

[0098] Referring to Figures 7 and 8, in one embodiment, the first fine-tuning module 333 further includes a third guide rail 3336 and a third slider 3337. The third guide rail 3336 is fixedly mounted on the movable plate 332 and parallel to the central axis of the third lead screw 3333. The third slider 3337 is mounted on the third guide rail 3336 and is fixedly connected to the third nut 3334. When the third nut 3334 moves along the third lead screw 3333, it drives the third slider 3337 to move synchronously along the third guide rail 3336. The other end of the connecting rod 3338 is rotatably connected to the third slider 3337 about the fifth axis L.

[0099] The sliding configuration of the third guide rail 3336 and the third slider 3337 allows the third slider 3337 to restrict the rotation of the third nut 3334 around the third lead screw 3333. This eliminates the need for an additional circumferential limiting structure for the third nut 3334 and prevents the torque of the third lead screw 3333 from being transmitted to the connecting rod 3338 through the third nut 3334. This also avoids the problem of the connecting rod 3338 deflecting or easily getting stuck, ensuring smooth pitch adjustment of the movable plate 332.

[0100] Furthermore, through the configuration of the third guide rail 3336 and the third slider 3337, the connecting rod 3338 can be positioned away from the third nut 3334 in the first direction X. This facilitates the arrangement of the internal structure of the first fine-tuning module 333 and also allows the second adjustment component 33 to have a certain volume, facilitating a sufficiently large connection area with the bracket 313, the crossbeam body 71, etc., to ensure the connection stability between the second adjustment component 33 and the bracket 313 and the crossbeam body 71.

[0101] As shown in Figures 7 and 8, in one embodiment, two third guide rails 3336 and three third sliders 3337 are configured, located on both sides of the third lead screw 3333 in the first direction X. The connecting rods 3338 can be configured as a set, hinged to one of the third sliders 3337, or as two sets, each hinged to one of the third sliders 3337, as shown in Figure 8.

[0102] Thus, the two third sliders 3337 slide on both sides of the third lead screw 3333 respectively, which makes the force on the two third sliders 3337 more balanced, which is beneficial to the sliding of the third sliders 3337.

[0103] As shown in Figures 7 and 8, the two third sliders 3337 are fixedly connected by a connecting rod 3340. Of course, in the second direction Y, the connecting rod 3340 is positioned to avoid the third lead screw 3333.

[0104] Please refer to Figures 7 and 8. The first fine-tuning module 333 also includes a meshing first bevel gear 3332 and a second bevel gear 3335. The first bevel gear 3332 is coaxially connected to one end of the third lead screw 3333, for example, it is fixedly coaxially connected to the upper end of the third lead screw 3333. The second bevel gear 3335 is rotatably mounted on the movable plate 332, and the central axis of the second bevel gear 3335 is perpendicular to the central axis of the first bevel gear 3332. By rotating the second bevel gear 3335, the rotation of the first bevel gear 3332 and the third lead screw 3333 can be achieved.

[0105] One end of the second bevel gear 3335 is connected to the first handwheel 3331 via the first rotating rod 3341, allowing the operator to rotate the second bevel gear 3335. This arrangement allows the operator to rotate the third lead screw 3333 from either the left or right side of the second adjusting assembly 33. This is because, as shown in Figure 1, an electrical control box 82 is typically located above the second adjusting assembly 33; therefore, the rotation of the third lead screw 3333 can be bypassed by avoiding the electrical control box 82.

[0106] In other alternative embodiments, if space permits above or below the second adjusting component 33, the first bevel gear 3332 and the second bevel gear 3335 can be omitted, and the first handwheel 3331 can be directly set at the upper or lower end of the third lead screw 3333.

[0107] Please refer to Figures 7 and 8. A first fixing block 3311 is provided on the side surface of the fixed plate 331 facing the movable plate 332, and a second fixing block 3321 is provided on the side surface of the movable plate 332 facing the fixed plate 331 (the second fixing block 3321 is shown separately from the movable plate 332 for viewing reasons). The first fixing block 3311 and the second fixing block 3321 are hinged about the second axis Q.

[0108] To improve the hinge stability of the fixed plate 331 and the movable plate 332, as shown in Figures 7 and 8, two first fixed blocks 3311 and two second fixed blocks 3321 are each provided, and they are arranged at intervals along the first direction X, for example, at positions roughly corresponding to the two third sliders 3337.

[0109] Please refer to Figures 7 and 8. The second fine-tuning module 335 includes a meshing second worm 3352 and a second worm wheel 3353. The second worm 3352 is rotatably mounted on the movable plate 332, and its central axis is perpendicular to the first direction X. The second worm wheel 3353 is rotatably mounted on the movable plate 332, and its central axis is the third axis M. The second worm wheel 3353 is fixedly connected to the center point of the crossbeam body 71 along the first direction X.

[0110] The rotation of the second worm 3352 can be converted into the rotation of the second worm wheel 3353, thereby realizing the rotation of the crossbeam 7 around the third axis M, which can adjust the height of the left and right sides of the crossbeam 7.

[0111] Referring to Figures 7 and 8, the second fine-tuning module 335 includes a third support plate 3356, which is fixedly disposed on the side surface of the movable plate 332 facing the fixed plate 331 (again, the third support plate 3356 is shown separated from the movable plate 332). The second worm gear 3352 passes through the third support plate 3356 and rotates within the third support plate 3356. In an optional embodiment, a bearing (not shown) may be provided within the third support plate 3356 to support the second worm gear 3352.

[0112] Alternatively, the third support plate 3356 can be configured to simultaneously support the third lead screw 3333, for example, by supporting the lower end of the third lead screw 3333.

[0113] In one embodiment, as shown in Figures 7 and 8, the second worm gear 3352 is located between the third nut 3334 and a third slider 3337, and the second worm wheel 3353 is located on one axial side of the third lead screw 3333, as shown at the lower end. The first fine-tuning module 333 and the second fine-tuning module 335 are arranged intersectingly and do not affect each other, utilizing each other's space, which makes the structural arrangement of the second adjustment component 33 more balanced.

[0114] In addition, to facilitate the rotation of the third lead screw 3333, in one embodiment, as shown in Figures 7 and 8, the second fine-tuning module 335 further includes a meshing third bevel gear 3354 and a fourth bevel gear 3355. The third bevel gear 3354 is coaxially disposed at one axial end of the second worm gear 3352, such as the upper axial end. The fourth bevel gear 3355 is rotatably mounted on the movable plate 332, and the central axis of the fourth bevel gear 3355 is perpendicular to the central axis of the third bevel gear 3354.

[0115] As shown in Figures 7 and 8, the fourth bevel gear 3355 is connected to the second handwheel 3351 via the second rotating rod 3357, so as to facilitate the operation of the fourth bevel gear 3355 by the operator.

[0116] Similarly, the second handwheel 3351 is configured to allow rotation of the second worm gear 3352 to bypass the control box 82. In other alternative embodiments, where permissible, the second handwheel 3351 may be directly connected to the upper or lower axial end of the second worm gear 3352.

[0117] In one specific embodiment, the second handwheel 3351 and the first handwheel 3331 are arranged opposite to each other along the first direction X, located on the left and right sides of the second adjustment component 33, respectively, which is adapted to the operator's operating habits.

[0118] Referring to Figure 6, in one embodiment, the vehicle measurement system 100 further includes multiple rangefinders 81 (two are shown in Figure 6). The rangefinders 81 are mounted on the crossbeam 7 and / or the second fine-tuning module 335, and move synchronously with the crossbeam 7. The rangefinders 81 are used to measure the distance between the crossbeam 7 and the ground, as well as the distance to a reference position in front. In a specific embodiment, if the height of the base 1 is constant, the rangefinders 81 can be used to measure the distance between the crossbeam 7 and the upper surface of the base 1.

[0119] In addition, in one embodiment, the vehicle measurement system 100 further includes a plurality of tilt detection elements (not shown), which are disposed on the crossbeam 7 to reflect whether the left and right sides of the crossbeam 7 are level, including the tilt angle of the crossbeam body 71 relative to at least one of the first direction X, the second direction Y, and the third direction X, thereby providing a reference for the adjustment of the crossbeam 7. For example, the tilt detection element may include a gyroscope, and the tilt detection element may be disposed on the rear side of the crossbeam body 71; furthermore, the plurality of tilt detection elements may be arranged opposite each other on the crossbeam body 71.

[0120] In addition, in one embodiment, the base 1 of the vehicle measurement system 100 also includes a wheel assembly (not shown) disposed at the lower end of the base body 11, so that the base body 11 and its first adjustment assembly 12 can move on the ground, allowing the vehicle measurement system 100 to be quickly moved to the desired location. The first translation member 121 and the second translation member 123 can have smaller adjustment precision, which is beneficial to improving adjustment efficiency.

[0121] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle measurement system, characterized in that, include: A base, the base including a base body and a first adjustment component disposed on the base body; The column includes a column body and a second adjustment component disposed on the column body. The column body is connected to the first adjustment component. The first adjustment component is used to drive the column body to rotate about a first axis, which is parallel to a third direction. A lifting drive assembly is mounted on the column body and is used to drive the second adjustment assembly to translate along the third direction; as well as A crossbeam, the second adjusting assembly is connected to the crossbeam and is used to drive the crossbeam to rotate about a second axis and about a third axis; the second axis is parallel to a first direction, and the third axis is perpendicular to the first direction; the first direction is perpendicular to the third direction.

2. The vehicle measurement system as described in claim 1, characterized in that, The first adjusting component includes a first rotating member, which includes a meshing first worm and a first worm wheel; the central axis of the first worm wheel is the first axis, and the first worm wheel is rotatably mounted on the base body; the column body is coaxially connected to the first worm wheel.

3. The vehicle measurement system as described in claim 2, characterized in that, The first adjustment component further includes a first translation component and a second translation component. The first translation component includes a first lead screw and a first nut that engage, and a first support plate that is fixedly connected to the first nut. The second translation component includes a second lead screw and a second nut that engage, and a second support plate that is fixedly connected to the second nut. The first lead screw has an axial direction parallel to the first direction and is rotatably mounted on the base body; the second lead screw has an axial direction parallel to the second direction and is rotatably mounted on the first support plate; the first worm gear is rotatably mounted on the second support plate; the second direction is perpendicular to the first direction and the third direction.

4. The vehicle measurement system as described in claim 3, characterized in that, The first translation component further includes a first driving component, which is disposed on the base body and connected to the first lead screw; the second translation component further includes a second driving component, which is disposed on the first support plate and connected to the second lead screw; the first rotation component further includes a third driving component, which is disposed on the second support plate and connected to the first worm gear.

5. The vehicle measurement system as described in claim 4, characterized in that, It also includes a main control module, which is connected to the lifting drive assembly, the first drive component, the second drive component, and the third drive component, and is used to control the lifting drive assembly, the first drive component, the second drive component, and the third drive component.

6. The vehicle measurement system as described in claim 1, characterized in that, The column body includes a fixed column and a lifting column. The fixed column is connected to the first adjusting component, and the lifting column is slidably connected to the fixed column along the third direction. The lifting drive component includes a lifting member and a drive chain. The lifting member is fixedly connected to the fixed column and includes a push rod that can move up and down in the third direction. One end of the drive chain is connected to the fixed column, the drive chain slides around the top of the lifting member, and the other end of the drive chain is fixedly connected to the second adjusting component.

7. The vehicle measurement system as described in claim 6, characterized in that, The column body also includes a bracket, which is fixedly connected to the second adjustment component and the other end of the drive chain. Guide rollers are provided on opposite sides of the bracket. The lifting column is fitted with the fixed column. Guide grooves are provided on opposite sides of the lifting column along a third direction, and the guide rollers are rotatably disposed in the guide grooves.

8. The vehicle measurement system as described in any one of claims 1 to 7, characterized in that, The second adjustment component includes: a fixed plate, a movable plate, a first fine-tuning module, and a second fine-tuning module; the fixed plate is fixedly connected to the lifting drive component, and the movable plate is rotatably connected to the fixed plate around the second axis; the first fine-tuning module is connected between the fixed plate and the movable plate and is used to drive the movable plate to rotate around the second axis; the second fine-tuning module is disposed on the movable plate and is used to connect with the crossbeam, and the second fine-tuning module is used to drive the crossbeam to rotate around the third axis.

9. The vehicle measurement system as described in claim 8, characterized in that, The first fine-tuning module includes a third lead screw, a third nut, and a connecting rod. The third lead screw is rotatably mounted on the fixed plate, and the central axis of the third lead screw is perpendicular to the second direction. The third nut is mounted on the third lead screw. The first end of the connecting rod is rotatably connected to the fixed plate about a fourth axis, and the second end of the connecting rod is rotatably connected to the third nut about a fifth axis. Both the fourth and fifth axes are parallel to the second axis. The second direction is perpendicular to the first direction and the third direction.

10. The vehicle measurement system as described in claim 9, characterized in that, The first fine-tuning module further includes a third guide rail and a third slider. The third guide rail is fixedly installed on the movable plate and parallel to the third lead screw. The third slider is disposed on the third guide rail. The second end of the connecting rod is rotatably connected to the third slider around the fifth axis.

11. The vehicle measurement system as claimed in claim 8, characterized in that, The second fine-tuning module includes a meshing second worm and a second worm wheel. The second worm is rotatably mounted on the movable plate, and the central axis of the second worm is perpendicular to the first direction. The second worm wheel is rotatably mounted on the movable plate, and the central axis of the second worm wheel is perpendicular to the second direction. The crossbeam is fixedly connected to the second worm wheel. The second direction is perpendicular to the first direction and the third direction.

12. The vehicle measurement system as claimed in any one of claims 1 to 7, characterized in that, The crossbeam includes a crossbeam body and an inclination detection element disposed on the crossbeam body. The inclination detection element is used to measure the tilt angle of the crossbeam body relative to at least one of the first direction, the second direction, and the third direction, wherein the second direction is perpendicular to the first direction and the third direction.

Images