Calibration equipment for vehicle test and centering device thereof
By designing a centering device for vehicle testing, the automatic centering of the front of the vehicle is achieved by using the cooperation of the hinge rod and the connecting rod, the problem of high equipment costs in the prior art is solved and the equipment costs during the test process is reduced.
Patent Information
- Application Number
- CN202421659140.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-15
AI Technical Summary
When conducting driving direction testing of existing vehicle testing devices, high thrust power systems are required to adjust the front and rear wheel positions of the vehicle, resulting in higher equipment costs.
A centering device is designed, including a reference shaft, a hinge rod, a sliding table and a sliding rail. Through the cooperation of the hinge rod and a connecting rod, an automatic centering of the front of the vehicle is achieved without high thrust.
It realizes automatic centering of the front of the vehicle, reduces equipment costs, and simplifies the calibration process of vehicle testing.
Smart Images
Figure CN222979071U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle testing devices, in particular to a calibration device for vehicle testing and its centering device. Background Art
[0002] Before leaving the factory, a vehicle needs to undergo multiple tests; such as: steering angle test, four-wheel alignment test, driving direction test, lighting test, etc. Among them, for some tests, such as: driving direction test, before the test, it is necessary to calibrate the longitudinal center line of the vehicle.
[0003] The prior art generally sets two groups of aligners, front and rear; first, start the vehicle to make the front and rear wheels of the vehicle move to the corresponding aligners respectively; then adjust the positions of the front and rear wheels of the vehicle through each aligner to center the front and rear of the vehicle respectively, so as to align the longitudinal center line of the vehicle and complete the calibration.
[0004] The existing aligners generally push the wheels and the vehicle to move through an expansion frame to achieve centering, which requires a power system with large thrust and has a high equipment cost. Summary of the Invention
[0005] The purpose of the utility model is to provide a centering device, which can realize the automatic centering of the front of the vehicle and does not require a power system with large thrust, which is beneficial to reducing the equipment cost. Based on the same inventive concept, another purpose of the utility model is to provide a calibration device for vehicle testing, which has the aforementioned centering device.
[0006] To achieve the above purpose, the technical solution adopted by the utility model is:
[0007] The centering device includes: a reference axis extending in the vertical direction, a hinge rod hinged to the reference axis, sliding tables distributed on the left and right sides of the reference axis, and a slide rail that limits the sliding tables and extends in the left-right direction; wherein, connecting rods for connecting the sliding tables are respectively arranged at both ends of the hinge rod, so that when the hinge rod rotates forward or backward around the reference axis, the two sliding tables are driven to move towards or away from each other at the same speed; a detection disk is installed on the top of the sliding table, and a guiding channel for guiding the wheel into the detection disk; the width of the guiding channel gradually decreases from back to front; the two detection disks are symmetric about the reference axis left and right.
[0008] Optionally, two limit members are installed on the rear side of the sliding table, and there is a gap forming the guiding channel between the two limit members, and the gap gradually decreases from back to front.
[0009] Optionally, a concave arc surface is provided on the top of the detection disk to match the circumferential surface of the wheel.
[0010] Optionally, it further includes a base; the slide rail and the reference axis are installed on the base.
[0011] Optionally, the detection disk is mounted on the sliding table through a floating disk; the floating disk includes: a panel for mounting the detection disk, a plurality of universal balls supporting the panel, a mounting seat for mounting the universal balls, and a zero return device for driving the detection disk to return to zero.
[0012] Optionally, the zero return device includes: a first gear and a second gear rotatably connected to the mounting seat, a first locking arm fixedly connected to the first gear, a second locking arm fixedly connected to the second gear, a core shaft located between the first locking arm and the second locking arm, and a power source for driving the first locking arm and the first gear to rotate around the axis of the first gear; the first gear and the second gear mesh with each other; the first locking arm has a first zero return groove on the side facing the second locking arm, and a first guiding edge for guiding the core shaft to slide into the first zero return groove; the second locking arm has a second zero return groove on the side facing the first locking arm, and a second guiding edge for guiding the core shaft to slide into the second zero return groove; when the first zero return groove cooperates with the second zero return groove to lock the core shaft at the same time, the core shaft is located at the zero return position; the core shaft is connected to the detection disk.
[0013] Optionally, the mounting seat has a limiting hole for the core shaft to pass through, and the aperture of the limiting hole is larger than the diameter of the core shaft; the edge of the limiting hole forms the boundary of the moving range of the core shaft.
[0014] Optionally, an encoder is further included; the input shaft of the encoder is connected to the core shaft through a coupling, the housing of the encoder is mounted on a bracket, the bracket is limited to a first guide rail, and the first guide rail is limited to a second guide rail, and the first guide rail and the second guide rail are perpendicular to each other.
[0015] The present application further provides a calibration device for vehicle testing, which has the aforementioned centering device.
[0016] The working principle of the present utility model is as follows: Drive the vehicle to make the two front wheels of the vehicle drive into a guiding channel respectively. When there is a difference between the center distance of the two detection disks and the center distance of the two front wheels of the vehicle; since the width of the guiding channel gradually decreases from the back to the front, one side channel wall of one of the guiding channels will contact the corresponding front wheel of the vehicle, and this front wheel will drive the guiding channel to drive the sliding table to move in the left-right direction; and the two sliding tables are respectively connected to the hinge rod through a connecting rod. When one of the sliding tables moves, it will drive the hinge rod to rotate around the reference axis, thereby driving the other sliding table to move in the opposite direction at the same speed; in this way, the center distance of the two detection disks can be automatically adjusted to be the same as the center distance of the two front wheels of the vehicle. When the center distance of the two detection disks is the same as the center distance of the two front wheels of the vehicle, make the two front wheels of the vehicle drive into the corresponding detection disks along the guiding channels respectively, and the centering of the vehicle head can be automatically realized; there is no need to push the front wheels to move to adjust the position of the vehicle head to achieve centering.
[0017] It can be seen from this that the beneficial effects of the present utility model are as follows: It can achieve automatic centering of the vehicle head, and there is no need to set a power system with large thrust, which is beneficial to reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0019] Figure 1 Top view of the centering device;
[0020] Figure 2 Schematic diagram of the detection disk installed on the floating disk;
[0021] Figure 3 Connection schematic diagram of the encoder, the first guide rail, and the second guide rail;
[0022] Figure 4 Schematic diagram of the mounting seat provided with the first locking arm and the second locking arm
[0023] Figure 5 For Figure 4 top view.
[0024] Reference numerals: 1, reference axis; 2, hinge rod; 3, slide table; 4, connecting rod; 5, detection disk; 6, guiding channel; 7, limiting member; 8, base; 9, panel; 10, universal ball; 11, mounting seat; 12, first gear; 13, second gear; 14, first locking arm; 15, second locking arm; 16, core shaft; 17, power source; 18, first zero return groove; 19, first guiding edge; 20, second zero return groove; 21, second guiding edge; 22, limiting hole; 23, encoder; 24, first guide rail; 25, second guide rail. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.
[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.
[0028] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model.
[0030] The following will Figure 1 ~ Figure 5 describe the embodiments of the present utility model in detail with reference to the
[0031] An embodiment of the present utility model provides a centering device. The centering device includes: a reference shaft 1 extending in the up-down direction, a hinge rod 2 hinged to the reference shaft 1, sliding tables 3 distributed on the left and right sides of the reference shaft 1, and a slide rail that limits the sliding tables 3 and extends in the left-right direction. Connecting rods 4 for connecting the sliding tables 3 are respectively arranged at both ends of the hinge rod 2, so that when the hinge rod 2 rotates forward or backward around the reference shaft 1, the two sliding tables 3 are driven to move towards or away from each other at the same rate. It should be understood that a connecting rod 4 is respectively hinged to both ends of the hinge rod 2; one end of the connecting rod 4 is hinged to the corresponding sliding table 3, and the other end is hinged to the end of the hinge rod 2. A detection disk 5 is installed on the top of the sliding table 3, and a guiding channel 6 for guiding the wheels into the detection disk 5; the width of the guiding channel 6 gradually decreases from back to front. The two detection disks 5 are symmetric about the reference shaft 1 left and right. It should be understood that when one of the sliding tables 3 moves along the slide rail, it will drive the other sliding table 3 to move along the slide rail in the opposite direction at the same rate. In this way, the two detection disks 5 can always be symmetric about the reference shaft 1 left and right; when the left and right wheels of the vehicle respectively drive onto the two detection disks 5, centering can be automatically achieved.
[0032] The following describes the specific implementation manner of the centering device: Drive the vehicle to make the two front wheels of the vehicle respectively drive into a guiding channel 6. When there is a difference between the center distance of the two detection disks 5 and the center distance of the two front wheels of the vehicle; since the width of the guiding channel 6 gradually decreases from back to front, one side channel wall of one of the guiding channels 6 will contact the corresponding front wheel of the vehicle, and this front wheel will drive the guiding channel 6 to drive the sliding table 3 to move in the left-right direction; and the two sliding tables 3 are respectively connected to the hinge rod 2 through the connecting rods 4. When one of the sliding tables 3 moves, it will drive the hinge rod 2 to rotate around the reference shaft 1, thereby driving the other sliding table 3 to move in the opposite direction at the same rate; in this way, the center distance of the two detection disks 5 can be automatically adjusted to be the same as the center distance of the two front wheels of the vehicle. When the center distance of the two detection disks 5 is the same as the center distance of the two front wheels of the vehicle, make the two front wheels of the vehicle respectively drive into the corresponding detection disks 5 along the guiding channels 6, and the centering of the vehicle head can be automatically achieved; there is no need to push the front wheels to move to adjust the position of the vehicle head to achieve centering. The centering device can achieve automatic centering of the vehicle head and does not require a large-thrust power system, which is beneficial to reducing the equipment cost. In addition, when the driving skill of the tester is good, the centering device can also be used for centering the vehicle tail.
[0033] Further, two limiting members 7 are installed on the rear side of the sliding table 3, and there is a gap forming the guiding channel 6 between the two limiting members 7, and the gap gradually decreases from back to front.
[0034] Further, a concave arc surface is provided on the top of the detection disk 5 to match the circumferential surface of the wheel. It should be understood that by providing a concave arc surface on the top of the detection disk 5, the wheel can drive into the detection disk 5 more conveniently and accurately.
[0035] Further, it further includes a base 8; the slide rail and the reference shaft 1 are installed on the base 8.
[0036] Further, the detection disk 5 is installed on the slide table 3 through a floating disk; the floating disk includes: a panel 9 for installing the detection disk 5, a plurality of universal balls 10 that support the panel 9, a mounting seat 11 for installing the universal balls 10, and a zero-return device for driving the detection disk 5 to return to zero. It should be understood that before centering, it is necessary to first drive the detection disk 5 to return to zero through the zero-return device; after centering, various actions are made by the wheel or the vehicle, and corresponding tests can be carried out. The panel 9 for installing the detection disk 5 is supported by the universal balls 10, and the resistance is very small, which is more convenient for the wheel or the vehicle to make actions.
[0037] Further, the zero return device includes: a first gear 12 and a second gear 13 rotatably connected to the mounting base 11, a first locking arm 14 fixedly connected to the first gear 12, a second locking arm 15 fixedly connected to the second gear 13, a mandrel 16 located between the first locking arm 14 and the second locking arm 15, and a power source 17 for driving the first locking arm 14 and the first gear 12 to rotate around the axis of the first gear 12. It should be understood that the power source 17 is usually a linear cylinder, with one end hinged to the mounting base 11 and the other end hinged to the first locking arm 14. The first gear 12 meshes with the second gear 13; on the side of the first locking arm 14 facing the second locking arm 15, there is a first zero return groove 18 and a first guiding edge 19 for guiding the mandrel 16 to slide into the first zero return groove 18; on the side of the second locking arm 15 facing the first locking arm 14, there is a second zero return groove 20 and a second guiding edge 21 for guiding the mandrel 16 to slide into the second zero return groove 20; when the first zero return groove 18 cooperates with the second zero return groove 20 to lock the mandrel 16 at the same time, the mandrel 16 is located at the zero return position; the mandrel 16 is connected to the detection disk 5. It should be understood that the mandrel 16 can be connected to the panel 9 so that the mandrel 16 is indirectly connected to the detection disk 5; or the panel 9 can be set as a ring for the upper end of the mandrel 16 to pass through to be directly connected to the detection disk 5. Before centering, by driving the first gear 12 to rotate clockwise through the power source 17, the second gear 13 can be driven to rotate counterclockwise, thereby driving the first locking arm 14 and the second locking arm 15 to approach each other. During the process of the first locking arm 14 and the second locking arm 15 approaching each other, based on the position of the mandrel 16; if the first locking arm 14 contacts the mandrel 16 first, the first guiding edge 19 of the first locking arm 14 will guide the mandrel 16 to slide into the first zero return groove 18; if the second locking arm 15 contacts the mandrel 16 first, the second guiding edge 21 of the second locking arm 15 will guide the mandrel 16 to slide into the second zero return groove 20; finally, the first zero return groove 18 of the first locking arm 14 will cooperate with the second zero return groove 20 of the second locking arm 15 to lock the mandrel 16 at the zero return position, so that the detection disk 5 connected to the mandrel 16 realizes zero return. After centering is completed, by driving the first gear 12 to rotate counterclockwise through the power source 17, the second gear 13 can be driven to rotate clockwise, thereby driving the first locking arm 14 and the second locking arm 15 to move away from each other, and then releasing the mandrel 16, so that the detection disk 5 can move freely to test the vehicle.
[0038] Further, the mounting base 11 has a limiting hole 22 for the mandrel 16 to pass through, and the aperture of the limiting hole 22 is larger than the diameter of the mandrel 16; the edge of the limiting hole 22 forms the boundary of the moving range of the mandrel 16. It should be understood that by restricting the moving range of the mandrel 16 through the limiting hole 22, it can be avoided that the panel 9 slips out of the supporting range of the universal ball 10 when moving with the detection disk 5.
[0039] Further, it further includes an encoder 23; an input shaft of the encoder 23 is connected to a core shaft 16 through a coupling, a housing of the encoder 23 is mounted on a bracket, the bracket is limited to a first guide rail 24, the first guide rail 24 is limited to a second guide rail 25, and the first guide rail 24 and the second guide rail 25 are perpendicular to each other. It should be understood that when the detection disc 5 translates, the encoder 23 will slide along the first guide rail 24, or the encoder 23 and the first guide rail 24 will slide along the second guide rail 25, so that the encoder 23 translates synchronously with the detection disc 5; when the detection disc 5 drives the core shaft 16 to rotate synchronously, the encoder 23 will convert the angular displacement into an electrical signal and store or transmit it.
[0040] The present application further provides a calibration device for vehicle testing, which has the aforementioned centering device. It should be understood that the calibration device can be provided with two centering devices, one for centering the front of the vehicle and the other for centering the rear of the vehicle. In addition, the calibration device can also be used in combination with an existing aligner. After the front of the vehicle automatically aligns with the detection disc 5 of the centering device when the front of the vehicle travels to it, the rear of the vehicle can be centered through the aligner, so that the longitudinal center line of the vehicle is aligned and the calibration is completed.
[0041] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that various changes or modifications can be made to these embodiments without departing from the principles and essence of the present invention, and these changes and modifications all fall within the protection scope of the present invention.
Claims
1. A centering device, characterized in that: include: A reference axis (1) extending in the up-down direction; and A hinge rod (2) hinged to the reference axis (1); and Slide tables (3) distributed on the left and right sides of the reference axis (1); and A slide rail which limits the slide table (3) and extends in the left-right direction; in, Connecting rods (4) for connecting the slides (3) are respectively arranged at both ends of the hinge rod (2), so that when the hinge rod (2) rotates forward or reversely around the reference axis (1), the two slides (3) are driven to move towards or away from each other at the same speed; A detection plate (5) and a guide channel (6) for guiding the wheel to enter the detection plate (5) are installed on the top of the slide (3); The width of the guide channel (6) gradually decreases from back to front; The two detection disks (5) are symmetrical with respect to the reference axis (1).
2. The centering device according to claim 1, characterized in that: Two left and right limiting members (7) are installed on the rear side of the slide (3), and a gap forming a guide channel (6) is provided between the two limiting members (7), and the gap gradually decreases from the back to the front.
3. The centering device according to claim 1, characterized in that: The top of the detection disc (5) is provided with a concave arc surface to match the circumferential surface of the wheel.
4. The centering device according to claim 1, characterized in that: It also includes a base (8); the slide rail and the reference axis (1) are mounted on the base (8).
5. The centering device according to any one of claims 1 to 4, characterized in that: The detection plate (5) is mounted on the slide table (3) via a floating plate; The floating plate comprises: a panel (9) for mounting the detection plate (5), a plurality of universal balls (10) for supporting the panel (9), a mounting seat (11) for mounting the universal balls (10), and a zero return device for driving the detection plate (5) to return to zero.
6. The centering device according to claim 5, characterized in that: The zero return device comprises: a first gear (12) and a second gear (13) rotatably connected to the mounting seat (11), a first locking arm (14) fixedly connected to the first gear (12), a second locking arm (15) fixedly connected to the second gear (13), a spindle (16) located between the first locking arm (14) and the second locking arm (15), and a power source (17) for driving the first locking arm (14) and the first gear (12) to rotate around the axis of the first gear (12); The first gear (12) and the second gear (13) mesh with each other; The first locking arm (14) has a first return-to-zero groove (18) on a side facing the second locking arm (15), and a first guide edge (19) for guiding the spindle (16) to slide toward the first return-to-zero groove (18); The second locking arm (15) has a second return-to-zero groove (20) on a side facing the first locking arm (14), and a second guide edge (21) for guiding the spindle (16) to slide toward the second return-to-zero groove (20); When the first return-to-zero groove (18) cooperates with the second return-to-zero groove (20) to simultaneously lock the spindle (16), the spindle (16) is located at the return-to-zero position; The core shaft (16) is connected to the detection disk (5).
7. The centering device according to claim 6, characterized in that: The mounting seat (11) has a limiting hole (22) for the core shaft (16) to pass through, and the diameter of the limiting hole (22) is larger than the diameter of the core shaft (16); The hole edge of the limiting hole (22) forms the boundary of the moving range of the core shaft (16).
8. The centering device according to claim 7, characterized in that: Also included is an encoder (23); The input shaft of the encoder (23) is connected to the core shaft (16) via a coupling, and the housing of the encoder (23) is mounted on a bracket; The bracket is limited to the first guide rail (24), the first guide rail (24) is limited to the second guide rail (25), and the first guide rail (24) and the second guide rail (25) are perpendicular to each other.
9. Calibration equipment for vehicle testing, characterized in that: A centering device according to any one of claims 1 to 8.