Lower car body positioning device

Abstract

This invention provides a vehicle body positioning device, belonging to the field of vehicle body manufacturing technology. The device includes a positioning plate, a first positioning component, a second positioning component, and a first driving component. The first driving component includes a first driving assembly and a second driving assembly. The first positioning component is slidably connected to one side of the positioning plate to position the front of the vehicle body; the second positioning component is fixed to the other side of the positioning plate to position the rear of the vehicle body. The first driving assembly drives the first positioning component to move along the X, Y, and Z directions; the second driving assembly drives the second positioning component to move along the Y and Z directions. The first and second driving assemblies can adjust the distance between the first and second positioning components in the X and Y directions, thereby adapting to the positioning of different vehicle models. This invention can achieve high-precision positioning in two-dimensional or three-dimensional space, adapting to different vehicle models and improving the positioning accuracy and efficiency of the vehicle body.

Description

Technical Field

[0001] This invention relates to the field of vehicle body processing technology, and in particular to a lower body positioning device. Background Technology

[0002] In the automotive body-in-white welding production line, the lower body (typically including key components such as the floor assembly, front / rear longitudinal beams, sill beams, and crossbeams) is the cornerstone of the entire vehicle structure. Its assembly precision directly determines the matching quality of subsequent sub-assemblies such as side panels and roof, and ultimately affects the vehicle's safety, NVH performance, and appearance quality. Therefore, the precise positioning and reliable clamping of the lower body are crucial aspects of the welding process.

[0003] Currently, the industry commonly uses specialized positioning fixtures to fix the underbody of a vehicle. These fixtures are typically made of a large number of high-strength castings or precision machined parts, achieving rigid positioning of the underbody for a specific vehicle model through a series of positioning pins (two pins on one side) and clamps. However, as the automotive market develops towards personalization, small batches, and multiple varieties, traditional specialized fixtures not only occupy a large area and have a rigid layout, but also have extremely low flexibility, making them unable to adapt to the co-production of multiple vehicle models. This severely restricts production efficiency and the flexibility of production organization, failing to meet the core requirement of "flexibility" in modern automotive manufacturing. To accommodate different vehicle models, it is usually necessary to reserve independent fixture stations for each model or store a large number of spare fixtures, occupying valuable workshop space and making it difficult to optimize the production line layout. Therefore, developing an underbody positioning technology that can adapt to changes in size has become an urgent problem to be solved in the automotive manufacturing field. Summary of the Invention

[0004] This invention provides a vehicle body positioning device. The device positions the front and rear sides of the vehicle body using a first positioning component and a second positioning component, respectively. By cooperating with the first and second driving components, the distance between the first and second positioning components in the X and Y directions can be adjusted, thereby achieving high-precision positioning of the first and second positioning components in two-dimensional or three-dimensional space. This allows the device to adapt to different vehicle models and improve the positioning accuracy and efficiency of the vehicle body.

[0005] To achieve the objectives of this invention, the following technical solution is adopted: The present invention provides a vehicle undercarriage positioning device. The vehicle undercarriage positioning device includes: Positioning plate; The first positioning component is slidably connected to one side of the positioning plate to position the front side of the lower body; The second positioning component is fixed to the other side of the positioning plate to position the rear side of the lower vehicle body; The first driving component includes a first driving assembly and a second driving assembly. The first driving assembly is connected to the first positioning component and is used to drive the first positioning component to move along the X, Y, and Z directions. The second driving assembly is connected to the second positioning component and is used to drive the second positioning component to move along the Y and Z directions. The first drive component and the second drive component can adjust the distance between the first positioning component and the second positioning component in the X and Y directions, thereby adapting to the positioning of different vehicle models.

[0006] According to one embodiment of the present invention, the first positioning component includes a first mounting base and a first positioning pin connected to the first mounting base, and the first driving assembly includes: An X-axis drive mechanism is slidably connected to the positioning plate and is used to drive the first positioning pin to move along the X-axis. The first Y-axis drive mechanism is connected to the X-axis drive mechanism and is used to drive the first positioning pin to move along the Y-axis. The first Z-axis drive mechanism is connected between the first Y-axis drive mechanism and the first mounting base, and is used to drive the first positioning pin to move along the Z-axis.

[0007] According to one embodiment of the present invention, the second driving component includes: The second mounting base is connected to the other side of the positioning plate; The second Z-axis drive mechanism is connected to the second mounting base and is used to drive the second positioning component to perform lifting and lowering movements. The second Y-axis drive mechanism is connected to the X-axis drive mechanism and is used to drive the second positioning component to move along the Y-axis.

[0008] According to one embodiment of the present invention, the second positioning component includes: The mounting plate is fixedly connected to the movable end of the second Y-axis drive mechanism; A swing arm cylinder, the housing of which is connected to the mounting plate; The third mounting base is rotatably connected at its bottom end to the movable end of the swing arm cylinder and rotatably connected at its top to the mounting plate. The second positioning pin is connected to the third mounting base and is used to position and support the rear of the lower body. The telescopic movement of the swing arm cylinder causes the third mounting base and the second positioning pin on it to rotate between the working position and the non-working position.

[0009] According to one embodiment of the present invention, the mounting plate is provided with mounting blocks, and the third mounting base includes: The first L-shaped plate has its vertical portion connected to the second positioning pin and its horizontal portion rotatably connected to the mounting block; The connector includes a connecting plate and a connecting rod. The upper part of the connecting plate is connected to the first L-shaped plate, the bottom of the connecting plate is connected to the top of the connecting rod, and the bottom end of the connecting rod is rotatably connected to the movable end of the swing arm cylinder. The swing arm cylinder drives the second positioning pin to rotate to the working position through the connecting piece and the first L-shaped plate.

[0010] According to one embodiment of the present invention, the top of the connecting plate is provided with a first L-shaped groove for cooperating with the first L-shaped plate, the first L-shaped plate is inserted into the first L-shaped groove, and the horizontal portion of the first L-shaped plate is connected to the first L-shaped groove.

[0011] According to one embodiment of the present invention, the second positioning component further includes a first limiting component for limiting the rotation of the third mounting base, the first limiting component comprising: A limiting bracket is connected to the top of the mounting plate near the lower vehicle body. The limiting component includes a first limiting block and a first limiting groove corresponding to the first limiting block. The first limiting block is connected to the side of the limiting bracket near the connecting plate, and the first limiting groove is connected to the side of the connecting plate near the first limiting block. The connecting plate is provided with a first groove facing the first limiting block. The bottom of the first limiting groove is inserted into and connected to the first groove. When the second positioning pin moves to the working position, the first limiting block is inserted into the first limiting groove.

[0012] According to one embodiment of the present invention, the second positioning component further includes a locking assembly for locking the second positioning pin located in the working position, the locking assembly comprising: A locking rod is connected to the side of the connecting plate away from the lower body, and a locking hole is provided on the side away from the connecting rod. A locking cylinder, connected to the mounting plate, is provided so that when the second locating pin moves to the working position, the piston rod of the locking cylinder extends and inserts into the locking hole to lock the locking rod and the third mounting base connected thereto.

[0013] According to one embodiment of the present invention, the lower body positioning device further includes a locking device for locking and fixing the intelligent trolley performing the workpiece conveying task, the locking device comprising: The support frame includes a base plate and two opposing first side plates and second side plates. The base plate is fixed to the positioning plate. The first side plates are connected to the side of the base plate near the lower body, and the second side plates are connected to the side of the base plate away from the lower body. The support cover is slidably connected to the top of the first side plate at the bottom and extends towards the second side plate at the top; A locking component for locking the intelligent vehicle when it moves to a preset position includes first locking units located on the front and rear sides of the second side plate, one of the first locking units being fixedly connected to the second side plate, and the side of the other first locking unit being slidably connected to the second side plate, with its bottom fixedly connected to the top of the support cover. The second driving component has its housing connected to the base plate and its movable end connected to the support cover; The second driving component drives the support cover to move, thereby adjusting the distance between the two first locking units and adapting it to different types of smart cars.

[0014] According to one embodiment of the present invention, there are two positioning plates (1), and the undercarriage positioning device further includes a guiding unit for guiding the intelligent vehicle, the guiding unit comprising: The first guiding mechanism, located outside the positioning part, is used to correct the entry direction of the intelligent vehicle; The second guiding mechanism, located inside the two positioning plates, is used to guide the intelligent vehicle to run along a preset route.

[0015] According to one embodiment of the present invention, the first guide mechanism includes a first bracket and a first roller connected to its top; The second guiding mechanism includes two guide roller assemblies arranged in a row, each guide roller assembly including a second bracket and a second roller; The first roller and the second roller respectively cooperate with the intelligent vehicle in rolling motion.

[0016] One embodiment of the present invention has the following advantages or beneficial effects: In this invention, the first positioning component and the second positioning component are used to position the front and rear sides of the vehicle body, respectively. By cooperating with the first driving component and the second driving component, the distance between the first positioning component and the second positioning component in the X and Y directions can be adjusted, thereby achieving high-precision positioning of the first positioning component and the second positioning component in two-dimensional or three-dimensional space. This allows for adaptation to different vehicle models and improves the positioning accuracy and efficiency of the vehicle body. Attached Figure Description

[0017] The above and other features and advantages of the present invention will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0018] Figure 1This is a schematic diagram of a vehicle body positioning device and a smart car according to an exemplary embodiment.

[0019] Figure 2 This is a schematic diagram of the connection of the vehicle body positioning device according to an exemplary embodiment.

[0020] Figure 3 This is a schematic diagram of the first state of the second positioning component and the second driving component according to an exemplary embodiment.

[0021] Figure 4 This is a schematic diagram of the second state of the second positioning component and the second driving component according to an exemplary embodiment.

[0022] Figure 5 This is a first schematic diagram showing the second positioning component in a non-operating state according to an exemplary embodiment.

[0023] Figure 6 This is a second schematic diagram showing the second positioning component in a non-operating state according to an exemplary embodiment.

[0024] Figure 7 This is a schematic diagram of the first state of the locking device according to an exemplary embodiment.

[0025] Figure 8 This is a schematic diagram of the second state of the locking device according to an exemplary embodiment.

[0026] The reference numerals in the attached figures are explained as follows: 1. Positioning plate; 2. First positioning component; 21. First mounting base; 22. First positioning pin; 3. Second positioning component; 31. Mounting plate; 311. Mounting block; 32. Swing arm cylinder; 33. Third mounting base; 331. First L-shaped plate; 332. Connecting piece; 3321. Connecting plate; 332. Connecting rod; 3323. First L-shaped groove; 34. Second positioning pin; 35. First limiting component; 351. Limiting bracket; 352. Limiting piece; 3521. First limiting block; 3522. First limiting groove; 36. Locking component; 361. Locking rod; 3611. Locking hole; 362. Locking cylinder; 4. First driving component; 41. First driving assembly; 411. X-axis driving mechanism; 412. First Y-axis driving mechanism; 413. First Z-axis driving mechanism; 42. Second driving assembly; 421. Second mounting base; 422. Second Z-axis driving mechanism; 423. Second Y-axis driving mechanism; 5. Locking device; 51. Support frame; 511. Base plate; 512. First side plate; 513. Second side plate; 52. Support cover; 53. Locking component; 531. First locking unit; 54. Second driving component; 6. Guide unit; 61. First guide mechanism; 611. First bracket; 612. First roller; 62. Second guide mechanism; 621. Second bracket; 622. Second roller; 7. Position detection mechanism; 71. First limit switch; 72. First contact block; 100. Intelligent vehicle; 101. Main body of intelligent vehicle; 102. Bracket device. Detailed Implementation

[0027] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0028] The terms “one,” “a,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and that other elements / components / etc. may exist in addition to those listed. “Multiple” refers to two or more.

[0029] An embodiment of the present invention provides a vehicle body positioning device, such as... Figure 1-7The vehicle body positioning device shown includes a positioning plate 1, a first positioning component 2, a second positioning component 3, and a first driving component 4, and there are two of each: the first driving component 4 includes a first driving assembly 41 and a second driving assembly 42. The first positioning component 2 is slidably connected to one side of the positioning plate 1 to position the front side of the vehicle body; the second positioning component 3 is fixed to the other side of the positioning plate 1 to position the rear side of the vehicle body; the first driving assembly 41 is connected to the first positioning component 2 and is used to drive the first positioning component 2 to move along the X, Y, and Z directions; the second driving assembly 42 is connected to the second positioning component 3 and is used to drive the second positioning component 3 to move along the Y and Z directions; through the cooperation of the first driving assembly 41 and the second driving assembly 42, the distance between the first positioning component 2 and the second positioning component 3 in the X and Y directions can be adjusted, thereby adapting to the positioning of different vehicle models. The first positioning component 2 and the second positioning component 3 respectively position the front and rear sides of the lower vehicle body. Through the cooperation of the first drive component 41 and the second drive component 42, high-precision positioning of the first positioning component 2 and the second positioning component 3 in two-dimensional or three-dimensional space can be achieved, thereby adapting to different vehicle models, improving the flexibility of the assembly station, and enhancing the accuracy and efficiency of positioning and assembly.

[0030] In a preferred embodiment of the present invention, such as Figure 1-7 As shown, the first positioning component 2 includes a first mounting base 21 and a first positioning pin 22 connected to the first mounting base 21. The first driving component 41 includes an X-axis driving mechanism 411, a first Y-axis driving mechanism 412, and a first Z-axis driving mechanism 413. The X-axis driving mechanism 411 is slidably connected to the positioning plate 1 and is used to drive the first positioning pin 22 to move along the X-axis. The first Y-axis driving mechanism 412 is connected to the X-axis driving mechanism 411 and is used to drive the first positioning pin 22 to move along the Y-axis. The first Z-axis driving mechanism 413 is connected between the first Y-axis driving mechanism 412 and the first mounting base 21 and is used to drive the first positioning pin 22 to move along the Z-axis. The X-axis drive mechanism 411, the first Y-axis drive mechanism 412, and the first Z-axis drive mechanism 413 each include a third drive unit and a third transmission unit. The third drive unit can be a motor or a cylinder, and the third transmission unit can be a ball screw pair, a gear rack, or a synchronous belt / sprocket. Preferably, the third drive unit is a motor, and the third transmission unit can be a synchronous belt / sprocket. It can move quickly between different vehicle body positions. Through the transmission unit, it drives the first mounting seat 21 and the first positioning pin 22 to move in at least one of the X, Y, and Z directions to ensure the positioning accuracy of the lower vehicle body.

[0031] In a preferred embodiment of the present invention, such as Figure 1-7As shown, the second drive assembly 42 includes a second mounting base 421, a second Z-axis drive mechanism 422, and a second Y-axis drive mechanism 423. The second mounting base 421 is connected to the other side of the positioning plate 1. The second Z-axis drive mechanism 422 is connected to the second mounting base 421 and is used to drive the second positioning component 3 to move up and down. The second Y-axis drive mechanism 423 is connected to the X-axis drive mechanism 411 and is used to drive the second positioning component 3 to move along the Y-axis. The distance between the first positioning component 2 and the second positioning component 3 can be increased or decreased by the second Z-axis drive mechanism 422 and the second Y-axis drive mechanism to adapt to vehicle models with different wheelbases. By adjusting the distance between the two second positioning components 3, vehicle models with different lower body widths can be adapted, thereby improving the flexibility of the assembly station.

[0032] In a preferred embodiment of the present invention, such as Figure 1-7 As shown, the second positioning component 3 includes a mounting plate 31, a swing arm cylinder 32, a third mounting base 33, and a second positioning pin 34. The mounting plate 31 is fixed to the movable end of the second Y-axis drive mechanism 423. The housing of the swing arm cylinder 32 is connected to the mounting plate 31. The bottom end of the third mounting base 33 is rotatably connected to the movable end of the swing arm cylinder 32, and the upper part of the third mounting base 33 is rotatably connected to the mounting plate 31. The second positioning pin 34 is connected to the third mounting base 33 and is used to position and support the rear of the lower body. The extension and retraction movement of the swing arm cylinder 32 drives the third mounting base 33 and its second positioning pin 34 to rotate between the working position and the non-working position. This application uses the swing arm cylinder 32 to drive the second positioning pin 34 to rotate and position the lower body, avoiding the large amount of space required for straight-line advancement from the front. In the non-working state, the swing arm can rotate to a non-working position completely away from the working area, which provides an open and interference-free space for workpiece loading and unloading and robot entry and exit, ensuring the smoothness of the automated process and reducing the risk of collision.

[0033] In a preferred embodiment of the present invention, such as Figure 1-7As shown, the mounting plate 31 is provided with mounting block 31311, and the third mounting base 33 includes a first L-shaped plate 331 and a connector 332. The connector 332 includes a connecting plate 3321 and a connecting rod 3322. The vertical part of the first L-shaped plate 331 is connected to the second positioning pin 34, and the horizontal part of the first L-shaped plate 331 is rotatably connected to the mounting block 31311. The upper part of the connecting plate 3321 is connected to the first L-shaped plate 331, and the bottom of the connecting plate 3321 is connected to the top of the connecting rod 3322. The bottom end of the connecting rod 3322 is rotatably connected to the movable end of the swing arm cylinder 32. The swing arm cylinder 32 drives the second positioning pin 34 to rotate to the working position through the connector 332 and the first L-shaped plate 331. When the swing arm cylinder 32 drives the connecting piece to the working position, the second positioning pin 34 is in a vertical state. At this time, the swing arm cylinder 32, the connecting piece 332 and the first L-shaped plate 331 will form a rigid structure with a large bending cross section, which can effectively resist external forces from the workpiece, such as welding deformation force and slight collisions from robot operation, and ensure that the positioning does not loosen during the processing.

[0034] In a preferred embodiment of the present invention, such as Figure 1-7 As shown, the top of the connecting plate 3321 is provided with a first L-shaped groove 3323 for cooperating with the first L-shaped plate 331. The first L-shaped plate 331 is inserted into the first L-shaped groove 3323, and the horizontal part of the first L-shaped plate 331 is connected to the first L-shaped groove 3323.

[0035] In a preferred embodiment of the present invention, such as Figure 1-7 As shown, the second positioning component 3 further includes a first limiting component 35 for limiting the rotation of the third mounting base 33. The first limiting component 35 includes a limiting bracket 351 and a limiting member 352. The limiting member 352 includes a first limiting block 3521 and a first limiting groove 3522 corresponding to the first limiting block 3521. The limiting bracket 351 is connected to the top of the mounting plate 31 near the lower body. The first limiting block 3521 is connected to the side of the limiting bracket 351 near the connecting plate 3321. The first limiting groove 3522 is connected to the connecting plate 3321. The connecting plate 3321 is located on the side near the first limiting block 3521. The connecting plate 3321 has a first groove with its opening facing the first limiting block 3521. The bottom of the first limiting groove 3522 is inserted into and connected to the first groove. When the second positioning pin 34 moves to the working position, the first limiting block 3521 is inserted into the first limiting groove 3522 to ensure that the second positioning pin 34 rotates to the preset positioning position. This eliminates the uncertainty of the endpoint position caused by air pressure fluctuations, load changes or system flexibility, and ensures the consistency of the workpiece processing.

[0036] In a preferred embodiment of the present invention, such as Figure 1-7As shown, the second positioning component 3 also includes a locking assembly 3636 for locking the second positioning pin 34 located in the working position. The locking assembly 3636 includes a locking rod 36361 and a locking cylinder 36362. The locking rod 36361 is connected to the side of the connecting plate 3321 away from the lower body, and a locking hole 363611 is provided on the side away from the connecting rod 3322. The locking cylinder 36362 is connected to the mounting plate 31 so that when the second positioning pin 34 moves to the working position, the piston rod of the locking cylinder 36362 extends and inserts into the locking hole 363611 to lock the locking rod 36361 and the third mounting seat 33 connected thereto. In this way, the second positioning pin 34 can always be kept in the preset working position, avoiding displacement caused by external forces such as welding deformation force and vibration, improving positioning accuracy, and also preventing the piston rod of the swing arm cylinder 32 from bearing continuous impact force or lateral force at the end of the stroke, which can protect the safety of the swing arm cylinder 32 and improve its service life.

[0037] In a preferred embodiment of the present invention, such as Figure 1-7As shown, the lower body positioning device also includes a locking device 5 for locking and fixing the intelligent vehicle 100 to the preset position. The locking device 5 includes a support frame 51, a support cover 52, a locking element 53, and a second drive component 54. The support frame 51 includes a base plate 511 and two opposing first side plates 512 and second side plates 513. The base plate 511 is fixed to the positioning plate 1. The first side plate 512 is connected to the side of the base plate 511 near the lower body, and the second side plate 513 is connected to the side of the base plate 511 away from the lower body. The bottom of the support cover 52 is slidably connected to the top of the first side plate 512, and the top extends toward the second side plate 513. The locking element 53... The smart car 100 used for locking movement to a preset position includes first locking units 531 located on the front and rear sides of the second side plate 513, respectively. One first locking unit 531 is fixed to the second side plate 513, and the side of the other first locking unit 531 is slidably connected to the second side plate 513, with its bottom fixed to the top of the support cover 52. The housing of the second driving component 54 is connected to the base plate 511, and the movable end of the second driving component 54 is connected to the support cover 52. The second driving component 54 drives the support cover 52 to move, thereby adjusting the distance between the two first locking units 531, thus adapting to different types of smart cars 100. The locking component 53 can be a clamp, which is equipped with a first clamp. The first clamp can clamp the side of the intelligent vehicle 100 to lock the intelligent vehicle 100. That is, the locking device 5 locks and fixes the intelligent vehicle 100 after it has moved to the preset position. Then, the lower body is lifted and positioned by two first positioning components (2) and two second positioning components 3 to achieve a seamless switch from "flexible conveying" to "rigid processing". The whole process requires stable and high-precision positioning of the intelligent vehicle 100 to ensure the absolute accuracy of all processing and guarantee the quality of the process. In addition, the second drive component 54 can adjust the distance between the two locking components 53 through the support cover 52 so that it can be used for different intelligent vehicles 100 and improve the adaptability of the overall assembly system.

[0038] In a preferred embodiment of the present invention, such as Figure 1-7 As shown, there are two positioning plates 1. The lower body positioning device also includes a guide unit 6 for guiding the intelligent vehicle 100. The guide unit 6 includes a first guide mechanism 61 and a second guide mechanism 62. The first guide mechanism 61 is located on the outside of the positioning plates 1 and is used to correct the entry direction of the intelligent vehicle 100. The second guide mechanism 62 is located on the inside of the two positioning plates 1 and is used to guide the intelligent vehicle 100 to run along a preset route, ensuring that the intelligent vehicle 100 moves to the preset position according to the set trajectory, preventing the intelligent vehicle 100 from lateral displacement, which may lead to lower body positioning failure and physical collision, affecting the stability of the entire production process and product quality.

[0039] In a preferred embodiment of the present invention, such as Figure 1-7 As shown, the first guiding mechanism 61 includes a first bracket 611 and a first roller 612 connected to its top; the second guiding mechanism 62 includes two guide roller assemblies arranged in a row, each guide roller assembly including a second bracket 621 and a second roller 622; wherein the first roller 612 and the second roller 622 respectively roll in cooperation with the intelligent vehicle 100. The intelligent vehicle 100 includes an intelligent vehicle body 101 and a bracket device 102. The first roller 612 and the second roller 622 can make low-friction rolling contact with the bracket device 102, providing necessary constraints for the intelligent vehicle 100 while minimizing resistance. The two guide roller assemblies arranged in a row can provide continuous lateral correction force, enabling smooth, precise, and low-wear guidance, providing high-precision guidance for the intelligent vehicle 100.

[0040] In a preferred embodiment of the present invention, such as Figure 1-7 As shown, the vehicle positioning device also includes a positioning detection mechanism 7 for detecting whether the intelligent vehicle 100 has moved to a preset position. The positioning detection mechanism 72 includes a first limit switch 71 and a first contact block 72. The first limit switch 71 can be connected to the support frame 51 or the support cover 52; the first contact block 72 is connected to the bracket device 102. After the vehicle body moves to the preset position, the first contact block 72 contacts the first limit switch 71 and triggers the positioning signal. The positioning signal is provided through the mechanical contact between the first contact block 72 and the first limit switch 71. The entire structure is simple, reliable, and safe.

[0041] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "installation," "connection," and "fixing," etc., should be interpreted broadly. For example, "connection" can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances. In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0042] In the description of this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, various modifications and variations can be made to the embodiments of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of the present invention should be included within the protection scope of the embodiments of the present invention.

Claims

1. A vehicle body positioning device, characterized in that, include: Positioning plate (1); The first positioning component (2) is slidably connected to one side of the positioning plate (1) to position the front side of the lower body; The second positioning component (3) is fixed to the other side of the positioning plate (1) to position the rear side of the lower vehicle body; The first driving component (4) includes a first driving assembly (41) and a second driving assembly (42). The first driving assembly (41) is connected to the first positioning component (2) and is used to drive the first positioning component (2) to move along the X, Y and Z directions. The second driving assembly (42) is connected to the second positioning component (3) and is used to drive the second positioning component (3) to move along the Y and Z directions. The first drive component (41) and the second drive component (42) can adjust the distance between the first positioning component (2) and the second positioning component (3) in the X and Y directions to adapt to the positioning of different vehicle models.

2. The undercarriage positioning device according to claim 1, characterized in that, The first positioning component (2) includes a first mounting base (21) and a first positioning pin (22) connected to the first mounting base (21), and the first drive assembly (41) includes: The X-axis drive mechanism (411) is slidably connected to the positioning plate (1) and is used to drive the first positioning pin (22) to move along the X-axis. The first Y-axis drive mechanism (412) is connected to the X-axis drive mechanism (411) and is used to drive the first positioning pin (22) to move along the Y-axis; The first Z-axis drive mechanism (413) is connected between the first Y-axis drive mechanism (412) and the first mounting base (21) and is used to drive the first positioning pin (22) to move along the Z-axis.

3. The undercarriage positioning device according to claim 1, characterized in that, The second driving component (42) includes: The second mounting base (421) is connected to the other side of the positioning plate (1); The second Z-axis drive mechanism (422) is connected to the second mounting base (421) and is used to drive the second positioning component (3) to perform lifting and lowering movements; The second Y-axis drive mechanism (423) is connected to the X-axis drive mechanism (411) and is used to drive the second positioning component (3) to move along the Y-axis.

4. The undercarriage positioning device according to claim 3, characterized in that, The second positioning component (3) includes: Mounting plate (31) is fixed to the movable end of the second Y-axis drive mechanism (423); A swing arm cylinder (32) has its housing connected to the mounting plate (31); The third mounting base (33) is rotatably connected at its bottom end to the movable end of the swing arm cylinder (32) and rotatably connected at its top to the mounting plate (31). The second positioning pin (34) is connected to the third mounting base (33) and is used to position and support the rear of the lower body. The telescopic movement of the swing arm cylinder (32) drives the third mounting base (33) and the second positioning pin (34) on it to rotate between the working position and the non-working position.

5. The undercarriage positioning device according to claim 4, characterized in that, The mounting plate (31) is provided with mounting blocks (31311), and the third mounting base (33) includes: The first L-shaped plate (331) has its vertical part connected to the second positioning pin (34) and its horizontal part rotatably connected to the mounting block (31311). The connector (332) includes a connecting plate (3321) and a connecting rod (3322). The upper part of the connecting plate (3321) is connected to the first L-shaped plate (331), the bottom of the connecting plate (3321) is connected to the top of the connecting rod (3322), and the bottom end of the connecting rod (3322) is rotatably connected to the movable end of the swing arm cylinder (32). The swing arm cylinder (32) drives the second positioning pin (34) to rotate to the working position through the connector (332) and the first L-shaped plate (331).

6. The undercarriage positioning device according to claim 5, characterized in that, The top of the connecting plate (3321) is provided with a first L-shaped groove (3323) for cooperating with the first L-shaped plate (331). The first L-shaped plate (331) is inserted into the first L-shaped groove (3323), and the horizontal part of the first L-shaped plate (331) is connected to the first L-shaped groove (3323).

7. The undercarriage positioning device according to claim 5, characterized in that, The second positioning component (3) further includes a first limiting component (35) for limiting the rotation of the third mounting base (33), the first limiting component (35) comprising: The limiting bracket (351) is connected to the top of the mounting plate (31) near the lower body. The limiting member (352) includes a first limiting block (3521) and a first limiting groove (3522) corresponding to the first limiting block (3521). The first limiting block (3521) is connected to the side of the limiting bracket (351) near the connecting plate (3321), and the first limiting groove (3522) is connected to the side of the connecting plate (3321) near the first limiting block (3521). The connecting plate (3321) is provided with a first groove facing the first limiting block (3521). The bottom of the first limiting groove (3522) is inserted into and connected to the first groove. When the second positioning pin (34) moves to the working position, the first limiting block (3521) is inserted into the first limiting groove (3522).

8. The undercarriage positioning device according to claim 5, characterized in that, The second positioning component (3) further includes a locking assembly (36) for locking the second positioning pin (34) in the working position, the locking assembly (36) comprising: A locking rod (361) is connected to the side of the connecting plate (3321) away from the lower body, and a locking hole (3611) is provided on the side away from the connecting rod (3322). A locking cylinder (362) is connected to the mounting plate (31) so that when the second positioning pin (34) moves to the working position, the piston rod of the locking cylinder (362) extends and inserts into the locking hole (3611) to lock the locking rod (361) and the third mounting seat (33) connected thereto.

9. The undercarriage positioning device according to claim 1, characterized in that, It also includes a locking device (5) for locking and fixing the intelligent trolley (100) that performs the workpiece conveying task, the locking device (5) comprising: The support frame (51) includes a base plate (511) and two opposing first side plates (512) and second side plates (513). The base plate (511) is fixed to the positioning plate (1). The first side plates (512) are connected to the side of the base plate (511) close to the lower body, and the second side plates (513) are connected to the side of the base plate (511) away from the lower body. The support cover (52) is slidably connected at the bottom to the top of the first side plate (512) and extends at the top toward the second side plate (513); The locking component (53) is used to lock the intelligent vehicle (100) that has moved to a preset position. It includes a first locking unit (531) located on the front and rear sides of the second side plate (513), one of which is fixed to the second side plate (513), and the other of which is slidably connected to the side of the second side plate (513) and its bottom is fixed to the top of the support cover (52). The second drive component (54) has its housing connected to the base plate (511) and its movable end connected to the support cover (52). The second driving component (54) drives the support cover (52) to move, thereby adjusting the distance between the two first locking units (531) to adapt to different types of smart cars (100).

10. The undercarriage positioning device according to claim 9, characterized in that, There are two positioning plates (1), and the lower body positioning device further includes a guide unit (6) for guiding the intelligent vehicle (100), the guide unit (6) including: The first guiding mechanism (61) is located on the outside of the positioning plate (1) and is used to correct the entry direction of the intelligent vehicle (100); The second guiding mechanism (62) is located inside the two positioning plates (1) and is used to guide the intelligent vehicle (100) to run along a preset route.

11. The undercarriage positioning device according to claim 10, characterized in that, The first guide mechanism (61) includes a first bracket (611) and a first roller (612) connected to its top. The second guide mechanism (62) includes two guide roller assemblies arranged in a row, each guide roller assembly including a second bracket (621) and a second roller (622). The first roller (612) and the second roller (622) respectively roll in cooperation with the intelligent vehicle (100).

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