Vehicle body splicing platform positioning system

Abstract

The invention provides a vehicle body splicing table positioning system, and belongs to the technical field of vehicle body manufacturing, the vehicle body splicing table positioning system comprises a roller platform, a splicing table tool, a positioning sliding table and a control system, the roller platform is provided with a plurality of rollers; the splicing table tool is connected to the tops of the rollers and comprises a splicing table base and a first positioning device used for positioning the front vehicle body and the rear vehicle body, and the positioning sliding table comprises two second positioning devices located on the two sides of the roller platform. The second positioning device comprises a positioning part used for supporting the front floor and a driving mechanism used for driving the positioning part to move horizontally and vertically. The control system is connected to the first positioning device and the positioning sliding table; the control system can control the first positioning device and the positioning sliding table to move to a preset working position. Accurate positioning can be provided for the front floor of the three-section type vehicle body, welding interference is avoided, middle supporting can be provided for the two-section type vehicle body, and the lap joint strength of the front vehicle body and the rear vehicle body is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of vehicle body manufacturing technology, and in particular to a vehicle body assembly platform positioning system. Background Technology

[0002] In the field of vehicle body manufacturing, flexible production lines have become the mainstream trend for adapting to the co-production of multiple vehicle models. Among them, the assembly station for the three major components is a key link in the vehicle body welding process, undertaking the task of positioning and assembling core components such as the front body, rear body, and front floor. To achieve rapid switching and compatibility between different vehicle models, existing technologies often use Numerical Control (NC) servo flexible positioning tooling assembly tables. Multiple sets of NC servo sliding units adjust the position of the positioning mechanism to adapt to the geometric dimensions and structural features of different vehicle models.

[0003] However, in actual production, the assembly station faces significant technical bottlenecks in its compatibility with three-section car bodies.

[0004] 1. Due to limitations in the initial design layout, the existing NC servo sliding unit arrangement is already very compact. Although it is recognized that dedicated positioning points such as front floor positioning pins are needed for the three-section body, physical space constraints prevent the addition without affecting the existing unit's range of motion and safety. As a result, the system cannot achieve full compatibility with the three-section body in essence, and the goal of flexible design has not been achieved.

[0005] 2. Because the existing front floor gripper only has basic handling functions, its positioning accuracy cannot meet the high-precision positioning requirements of the welding process for the front floor. In addition, the welding path of some models interferes with the structure of the front floor gripper, requiring the gripper to be completely detached before welding can be carried out. This makes it impossible for the gripper to provide stable and accurate auxiliary positioning and support during the welding process.

[0006] Therefore, there is an urgent need for a technical solution that can achieve precise positioning of the front floor and avoid welding interference without changing the main layout of the existing assembly platform base, so as to improve the vehicle compatibility and process reliability of the flexible production line. Summary of the Invention

[0007] This invention provides a vehicle body assembly platform positioning system. This system, with positioning slides positioned on the left and right sides of the roller platform, achieves effective, stable, and high-precision positioning of the front floor of a three-section vehicle body without altering existing assembly tooling. It eliminates the need for avoidance during welding, solving the problem of the front floor gripper having to detach due to interference and failing to provide continuous support. Furthermore, it provides central support for two-section vehicle bodies, ensuring the overlap strength between the front and rear body sections, ultimately achieving compatibility with both two-section and three-section vehicle models.

[0008] To achieve the objectives of this invention, the following technical solution is adopted: This invention provides a vehicle body assembly platform positioning system. The vehicle body assembly platform positioning system includes: A roller platform, connected to the ground, with multiple rollers mounted on it; The assembly platform fixture, connected to the top of the plurality of rollers, includes an assembly platform base and a first positioning device. The first positioning device is connected to the top of the assembly platform base to position the front and rear vehicle bodies. The positioning slide includes two second positioning devices located on both sides of the roller platform. The second positioning device includes a positioning component for supporting the front floor and a drive mechanism for driving the positioning component to move horizontally and vertically. A control system is connected to the first positioning device and the positioning slide. The control system is configured to control the first positioning device and the positioning slide to move to a preset working position according to the input vehicle model information, so as to achieve positioning and support of the front body, the rear body and the front floor.

[0009] According to one embodiment of the present invention, the driving mechanism includes: A horizontal motion component, located on the outside of the roller platform, is used to drive the positioning component to perform horizontal movement; A vertical motion component, connected to the horizontal motion component, drives the positioning component to move linearly in the vertical direction.

[0010] According to one embodiment of the present invention, the positioning component includes: Mounting base, connected to the vertical motion component; A switching component is connected to the end of the mounting base away from the vertical motion component; A positioning component, connected to the switching component; The switching component is connected to the control system, which can drive the switching component to clamp or release the positioning component, so as to switch the corresponding positioning component according to different vehicle models.

[0011] According to one embodiment of the present invention, the positioning component includes a fixing block, a fixing rod, and a positioning pin, wherein the fixing rod is connected between the fixing block and the positioning pin so that the positioning pin matches the front floor. The switching component includes: An electrical connector includes a female connector unit connected to the mounting base and a male connector unit connected to the positioning assembly, wherein the female connector unit and the male connector unit are disposed opposite to each other. Clamps, used to clamp the fixing block; A pneumatic mechanism, connected to the pneumatic-electric connector, is used to drive the female connector unit and the male connector unit to lock or disengage.

[0012] According to one embodiment of the present invention, the front floor includes a vehicle body beam, and the assembly tooling further includes a support device connected to the top of the assembly base, the support device being able to abut against the vehicle body beam to provide limiting support.

[0013] According to one embodiment of the present invention, the support device includes: Support components are used to support the vehicle body beams; Fixed support, connected to the assembly platform base; A lifting assembly, connected to the fixed support, is used to drive the support assembly to perform lifting movements; A sliding assembly, connected to the lifting assembly and the support assembly, is used to drive the support assembly to slide horizontally so that the support assembly extends into or out of the vehicle body.

[0014] According to one embodiment of the present invention, the lifting assembly includes: A lifting cylinder is connected to one side of the fixed support; The lifting frame includes a first connecting plate and a lifting plate. One end of the first connecting plate is connected to the drive end of the lifting cylinder, and the other end extends to the side of the fixed support away from the lifting cylinder and is connected to the bottom of the lifting plate. The sliding assembly is connected to the top of the lifting plate. The lifting cylinder drives the sliding assembly and the support assembly to move up and down via the lifting frame.

[0015] According to one embodiment of the present invention, the sliding assembly includes: The L-shaped frame includes a horizontal section and a vertical section, wherein the vertical section is connected to the lifting plate; A sliding cylinder is connected below the horizontal section; A sliding frame includes a second connecting plate and a sliding plate, the bottom of the second connecting plate being connected to the drive end of the sliding cylinder, and the sliding plate being located above the horizontal part and connected to the top of the second connecting plate; The support assembly is connected to the side of the sliding plate closest to the vehicle body, and the sliding cylinder can drive the sliding frame and the support assembly thereon to extend into or out of the area under the vehicle body.

[0016] According to one embodiment of the present invention, the support component includes: A support base is connected to the side of the sliding plate closest to the vehicle body; Support arm, connected to the upper part of the support base; A support block is attached to the end of the support arm.

[0017] According to one embodiment of the present invention, the support device further includes a reinforcing component, the reinforcing component comprising: A first reinforcing plate is connected to the upper surface of the sliding plate; Two second reinforcing plates are symmetrically connected to the lower surface of the sliding plate located below the support base; Wherein, the ratio of the length of the first reinforcing plate to the length of the sliding plate is greater than or equal to 0.5.

[0018] According to one embodiment of the present invention, the support device further includes a guide member, the guide member comprising: The first guide assembly includes a first guide rail and a first guide block. The first guide rail is connected to the side of the fixed support away from the lifting cylinder, and the first guide block is connected between the first guide rail and the lifting plate to provide vertical guidance for the movement of the lifting plate. The second guide assembly includes a second guide rail and a second guide block. The second guide rail is connected to the top of the horizontal part, and the first guide block is connected between the second guide rail and the sliding plate to guide the sliding plate horizontally.

[0019] According to one embodiment of the present invention, a protective cover is connected to the side of the second connecting plate away from the support assembly, and the horizontal portion and the side of the second guide rail away from the support assembly both pass through the second connecting plate and are inserted into the interior of the protective cover.

[0020] According to one embodiment of the present invention, the supporting device further includes a limiting member, the limiting member comprising: The first limiting component includes an upper limit block and a lower limit block respectively connected to the upper and lower parts of the fixed support to limit the lifting range of the lifting frame; The second limiting component includes a left limiting block and a right limiting block connected to the left and right sides of the horizontal portion, respectively. A first limiting block is provided below the sliding plate to cooperate with the left limiting block and the right limiting block, so as to limit the horizontal movement range of the sliding plate.

[0021] One embodiment of the present invention has the following advantages or beneficial effects: The vehicle body assembly platform positioning system described in this invention, with positioning slides set on the left and right sides of the roller platform, can achieve effective, stable, and high-precision positioning of the front floor of a three-section vehicle body without changing the existing assembly platform tooling. It eliminates the need for avoidance during welding, solving the problem that the front floor gripper must disengage due to interference and cannot provide continuous support. It can also provide central support for two-section vehicle bodies, ensuring the overlap strength between the front and rear body sections, ultimately achieving compatibility with both two-section and three-section vehicle models. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of a vehicle body assembly positioning system according to an exemplary embodiment.

[0024] Figure 2 This is a first schematic diagram of a positioning slide according to an exemplary embodiment.

[0025] Figure 3 This is a second schematic diagram of a positioning slide according to an exemplary embodiment.

[0026] Figure 4 This is a third schematic diagram of a positioning slide according to an exemplary embodiment.

[0027] Figure 5 This is a first schematic diagram of a support device according to an exemplary embodiment.

[0028] Figure 6 This is a second schematic diagram of a support device according to an exemplary embodiment.

[0029] Figure 7 This is a side view of a support device shown according to an exemplary embodiment.

[0030] Figure 8 This is an exploded view of a support device according to an exemplary embodiment.

[0031] The reference numerals in the attached figures are explained as follows: 1. Roller platform; 11. Rollers; 2. Assembly platform fixture; 21. Assembly platform base; 22. Vertical part of the first positioning device; 23. Support device; 231. Support assembly; 2311. Support base; 2312. Support arm; 2313. Support block; 232. Fixed support; 233. Lifting assembly; 2331. Lifting cylinder; 2332. Lifting frame; 23321. First connecting plate; 23322. Lifting plate; 234. Sliding assembly; 2341. L-shaped frame; 2342. Sliding cylinder; 2343. Sliding frame; 23431. Second connecting plate; 23432. Sliding plate; 2344. Protective cover 235. Reinforcing component; 2351. First reinforcing plate; 2352. Second reinforcing plate; 236. Guide component; 2361. First guide component; 23611. First guide rail; 23612. First guide block; 2362. Second guide component; 23621. Second guide rail; 23622. Second guide block; 237. Limiting component; 2371. First limiting component; 23711. Upper limiting block; 23712. Lower limiting block; 23713. Reinforcing plate; 2372. Second limiting component; 23721. Left limiting block; 23722. Right limiting block; 3. Positioning slide; 31. Second positioning device; 311. Positioning component; 3111. Mounting base; 3112. Switching assembly; 31121. Pneumatic connector; 31122. Clamp; 31123. Pneumatic mechanism; 3113. Positioning assembly; 3113. Positioning piece; 31131. Fixing block; 31132. Fixing rod; 31133. Positioning pin; 32. Drive mechanism; 321. Horizontal movement assembly; 322. Vertical movement assembly. Detailed Implementation

[0032] 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.

[0033] 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 meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc. “Multiple” refers to two or more.

[0034] An embodiment of the present invention provides a vehicle body assembly platform positioning system, such as... Figure 1-8The vehicle body assembly positioning system shown includes a roller platform 1, an assembly fixture 2, a positioning slide 3, and a control system. The roller platform 1 is connected to the ground and has multiple rollers 11 on it. The assembly fixture 2 is connected to the top of the multiple rollers 11 and includes an assembly base 21 and a first positioning device 22. The positioning slide 3 includes two second positioning devices 31 located on both sides of the roller platform 1. The first positioning device 22 is connected to the top of the assembly base 21 to position the front and rear vehicle bodies. The second positioning device 31 includes a positioning component 311 for supporting the front floor and a drive mechanism 32 for driving the positioning component 311 to move horizontally and vertically. The control system is connected to the first positioning device 22 and the positioning slide 3. The control system is configured to control the first positioning device 22 and the positioning slide 3 to move to a preset working position according to the input vehicle model information to achieve positioning and support of the front and rear vehicle bodies and the front floor.

[0035] The assembly tooling 2 in this application retains the existing CNC servo flexible positioning tooling assembly structure. The first positioning device 22 includes multiple positioning mechanisms, each of which includes an NC servo sliding unit for adjustment and positioning end, to achieve positioning support for the front and rear vehicle bodies. The roller platform 1 not only provides support for the assembly tooling 2, but also enables the assembly tooling 2 to move and position quickly and accurately between different workstations—including the loading preparation area, the main assembly workstation, the unloading and transfer area, and even the offline debugging area—under the traction of an automated guided vehicle (AGV) or intelligent transfer vehicle. Flexible scheduling is possible throughout the entire production line, improving the overall flexibility and operational efficiency of the production system. The positioning slide 3 can add a movable second positioning device 31 to perform high-precision positioning of the front floor without changing the existing assembly fixture 2. Specifically, the front floor gripper can grab the corresponding workpiece from the previous station and place it above the assembly fixture 2. The control system moves the first positioning device 22 to the corresponding preset position according to different vehicle model information and positions and supports the front and rear vehicle bodies. At the same time, the drive mechanism 32 drives the positioning component 311 to the corresponding support position of the front floor to position and support the front floor. Since the overlap position of the front floor and the middle floor assembly is the welding position, the support positions of the front floor are all located in the non-welding areas at the left and right ends of the front floor. The two second positioning devices 31 of this application can move from the left and right sides of the front floor to the corresponding positioning positions of the front floor, which can effectively avoid the welding device, facilitate subsequent welding, and solve the positioning problem of the front floor. Therefore, the positioning slide 3 of this application does not need to avoid obstacles during the welding process, which can completely solve the problem that the front floor gripper must disengage due to interference and cannot provide continuous support. It can achieve effective, stable and high-precision positioning of the front floor of the three-section body without sacrificing the rigid support required for the welding of the lower body. It can also achieve the middle support of the two-section body by switching the positioning component 311 used for positioning at the end (such as switching to a positioning support block), ensuring the overlap strength of the front and rear body of the two-section body, and finally achieving compatibility with two-section and three-section models.

[0036] In a preferred embodiment of the present invention, such as Figure 1-4The drive mechanism 32 shown includes a horizontal motion component 321 and a vertical motion component 322. The horizontal motion component 321 is located outside the roller platform 1 and is used to drive the positioning component 311 to move horizontally. The vertical motion component 322 is connected to the horizontal motion component 321 to drive the positioning component 311 to move linearly in the vertical direction. On the one hand, the horizontal motion component 321 and the vertical motion component 322 can adjust the position of the second positioning device 31 according to different vehicle models, so that the second positioning device 31 can be adapted to the front floor of different vehicle models, providing effective, stable, and high-precision positioning. On the other hand, the horizontal motion component 321 and the vertical motion component 322 can drive the second positioning device 31 to move horizontally synchronously with the assembly fixture 2, ensuring stability during vehicle body transfer. When the front floor positioning function is not required, the horizontal motion component 321 and the vertical motion component 322 can be moved out of the working area to achieve work avoidance and full utilization of space.

[0037] In a preferred embodiment of the present invention, such as Figure 1-4 The positioning component 311 shown includes a mounting base 3111, a switching component 3112, and a positioning component 3113. The mounting base 3111 is connected to the vertical motion component 322. The switching component 3112 is connected to the end of the mounting base 3111 away from the vertical motion component 322. The positioning component 3113 is connected to the switching component 3112. The switching component 3112 is connected to the control system, which can drive the switching component 3112 to clamp or release the positioning component 3113, so as to switch the corresponding positioning component 3113 according to different vehicle models. Figure 2-4 The diagram illustrates positioning components 3113 for different vehicle models. These different positioning components 3113 can position long and short vehicles, as well as the front floor of a three-section vehicle body. They can also provide positioning support for the rear lower body of a two-section vehicle body or the overlapping beam of the front and rear bodies of a two-section vehicle body. Users can select the appropriate positioning component 3113 according to different vehicle models. When changing vehicle models, the switching component 3112 can quickly release the positioning component 3113 and lock the new positioning component 3113, achieving rapid switching of the positioning component 3113. This not only positions the front body of a three-section vehicle body and avoids interference of the front floor gripper with the welding, but also supports the middle part of a two-section vehicle body by switching the positioning component 3113 at the end, ensuring the overlapping strength of the rear lower body of the front and rear bodies of the two-section vehicle body.

[0038] In a preferred embodiment of the present invention, such as Figure 1-4The positioning assembly 3113 shown includes a fixing block 31131, a fixing rod 31132, and a positioning pin 31133. The fixing rod 31132 is connected between the fixing block 31131 and the positioning pin 31133 so that the positioning pin 31133 matches the front floor. The switching assembly 3112 includes a pneumatic connector 31121, a clamp 31122, and a pneumatic mechanism 31123. The pneumatic connector 31121 includes a female head unit connected to the mounting base 3111 and a male head unit connected to the positioning assembly 3113. The female head unit and the male head unit are arranged opposite to each other. The clamp 31122 is used to clamp the fixing block 31131. The pneumatic mechanism 31123 is connected to the pneumatic connector 31121 and is used to drive the female head unit and the male head unit to lock or disengage. Switching between different positioning components 3113 is achieved by locking or disengaging the female and male head units. The clamp 31122 assists in locking to ensure the stability of the connection of the positioning components 3113.

[0039] In a preferred embodiment of the present invention, such as Figure 1 , 5 The front floor shown in Figure -8 includes the vehicle body beam. The assembly tool 2 also includes a support device 23 connected to the top of the assembly base 21. The support device 23 can abut against the vehicle body beam to provide limiting support. Since the overall rigidity of the lower chassis is poor before the three main components are joined and the sill plates are welded, the vehicle body beam needs to be supported to prevent the middle of the chassis from sinking. Furthermore, if the sliding stroke of the support device 23 is insufficient, the two second positioning devices 31 move to the key structural positions of the vehicle body beam or the rear lower chassis for positioning and rigid support, improving assembly quality. This also fundamentally solves the problem that traditional assembly platforms cannot adapt to ultra-long wheelbase or special structure vehicles due to their fixed stroke. Through the support device 23 and the dual positioning strategy, the positioning requirements of different vehicle models can be matched, enhancing system flexibility.

[0040] In a preferred embodiment of the present invention, such as Figure 1 , 5The support device 23 shown in Figure -8 includes a support assembly 231, a fixed support 232, a lifting assembly 233, and a sliding assembly 234. The support assembly 231 is used to support the vehicle body beam. The fixed support 232 is connected to the assembly platform base 21. The lifting assembly 233 is connected to the fixed support 232 and is used to drive the support assembly 231 to move up and down. The sliding assembly 234 is connected to the lifting assembly 233 and the support assembly 231 and is used to drive the support assembly 231 to slide horizontally so that the support assembly 231 extends into or out of the vehicle body. Because some vehicle models use swing arms to support the middle of the vehicle body, welding can only be performed after the swing arm cylinder-type middle support is raised to the support position. This application can replace the original swing arm cylinder with a sliding cylinder, and change the support action from swing arm lifting to Y-axis sliding entry. The action trajectory can better avoid the position of the vehicle body transport skid support base. At the same time, the support action trajectory is optimized to avoid interference and thus be compatible with more vehicle models, with stronger compatibility. The support device 23 can act synchronously with the first positioning device 22 and the second positioning device 31, which can reduce waiting time and improve production efficiency.

[0041] In a preferred embodiment of the present invention, such as Figure 1 , 5 The lifting assembly 233 shown in Figure -8 includes a lifting cylinder 2331 and a lifting frame 2332. The lifting frame 2332 includes a first connecting plate 23321 and a lifting plate 23322. The lifting cylinder 2331 is connected to one side of the fixed support 232. One end of the first connecting plate 23321 is connected to the drive end of the lifting cylinder 2331, and the other end extends to the side of the fixed support 232 away from the lifting cylinder 2331 and is connected to the bottom of the lifting plate 23322. The sliding assembly 234 is connected to the top of the lifting plate 23322. The lifting cylinder 2331 drives the sliding assembly 234 and the support assembly 231 to move up and down through the lifting frame 2332. The lifting frame 2332 in this application uses a 20mm thick steel plate to avoid insufficient support strength and to firmly support the middle of the vehicle chassis. This application utilizes the existing air passages of the fixed support 232 and the lifting cylinder 2331, and connects the lifting cylinder 2331 and the sliding component 234 into one unit through the lifting frame 2332, thereby optimizing the movement path of the support component 231, making it adaptable to different vehicle models and with stronger compatibility.

[0042] In a preferred embodiment of the present invention, such as Figure 5-8The sliding assembly 234 shown includes an L-shaped frame 2341, a sliding cylinder 2342, and a sliding frame 2343. The L-shaped frame 2341 includes a horizontal part and a vertical part. The sliding frame 2343 includes a second connecting plate 23431 and a sliding plate 23432. The vertical part is connected to the lifting plate 23322. The sliding cylinder 2342 is connected to the lower part of the horizontal part. The bottom of the second connecting plate 23431 is connected to the driving end of the sliding cylinder 2342. The sliding plate 23432 is located above the horizontal part and is connected to the top of the second connecting plate 23431. The support assembly 231 is connected to the side of the sliding plate 23432 near the vehicle body. The sliding cylinder 2342 can drive the sliding frame 2343 and the support assembly 231 on it to extend into or out of the vehicle body. This application enables the support component 231 to slide along the Y-axis under the vehicle body beam, and its movement trajectory can better avoid the position of the vehicle transport skid support base, thus having stronger compatibility. Compared with the swing arm support, the optimized support movement trajectory avoids interference and is compatible with more vehicle models.

[0043] In a preferred embodiment of the present invention, such as Figure 5-8 The support assembly 231 shown includes a support base 2311, a support arm 2312, and a support block 2313. The support base 2311 is connected to the side of the sliding plate 23432 closest to the vehicle body; the support arm 2312 is connected above the support base 2311; and the support block 2313 is connected to the end of the support arm 2312. The support base 2311, support arm 2312, and support block 2313 are all made of 20mm thick steel plate to ensure the overall strength of the support assembly 231, so as to firmly support the middle of the vehicle chassis. The support base 2311 and the sliding plate 23432 are fixed with adjusting bolts, allowing for quick switching of the end to match different vehicle models.

[0044] In a preferred embodiment of the present invention, such as Figure 5-8The support device 23 shown also includes a reinforcing component 235, which includes a first reinforcing plate 2351 and two second reinforcing plates 2352. The first reinforcing plate 2351 is connected to the upper surface of the sliding plate 23432. The two second reinforcing plates 2352 are symmetrically connected to the lower surface of the sliding plate 23432 located below the support base 2311. The ratio of the length of the first reinforcing plate 2351 to the length of the sliding plate 23432 is greater than or equal to 0.5. In this application, the first reinforcing plate 2351 and the two second reinforcing plates 2352 are all made of 20mm thick steel plates. Since the sliding plate 23432 is connected to the support assembly 231 on the side closer to the vehicle body, the first reinforcing plate 2351 and the two second reinforcing plates 2352 can effectively improve the bending stiffness of the sliding plate 23432 and optimize the load transmission path: the concentrated load or distributed load from the support seat 2311 can be transmitted more evenly to the two second reinforcing plates 2352 below, reducing the local deformation of the sliding plate 23432 itself, improving the support force of the sliding plate 23432 and the support assembly 231 on it, and providing stable support force for the vehicle body beam.

[0045] In a preferred embodiment of the present invention, such as Figure 5-8 The support device 23 shown also includes a guide component 236, which includes a first guide assembly 2361 and a second guide assembly 2362. The first guide assembly 2361 includes a first guide rail 23611 and a first guide block 23612. The first guide rail 23611 is connected to the side of the fixed support 232 away from the lifting cylinder 2331. The first guide block 23612 is connected between the first guide rail 23611 and the lifting plate 23322, which can vertically guide the movement of the lifting plate 23322. The second guide assembly 2362 includes a second guide rail 23621 and a second guide block 23622. The second guide rail 23621 is connected to the top of the horizontal part. The first guide block 23612 is connected between the second guide rail 23621 and the sliding plate 23432, which can horizontally guide the sliding plate 23432. The first guide component 2361 and the second guide component 2362 enable the support component 231 to operate smoothly, ensuring the accuracy and stability of the motion trajectory, enhancing the overall rigidity of the system, preventing deformation and vibration, and achieving smooth, low-resistance, and efficient motion.

[0046] In a preferred embodiment of the present invention, such as Figure 5-8The second connecting plate 23431 shown is connected to a protective cover 2344 on the side away from the support assembly 231. The horizontal part and the second guide rail 23621, on the side away from the support assembly 231, both pass through the second connecting plate 23431 and are inserted into the lower interior of the protective cover 2344. The sliding plate 23432 can also be inserted into the protective cover 2344 when moving outward. The protective cover 2344 has a notch on the upper part of the side away from the vehicle body to provide sufficient sliding space for the sliding plate 23432.

[0047] In a preferred embodiment of the present invention, such as Figure 5-8 The support device 23 shown also includes a limiting component 237, which includes a first limiting assembly 2371 and a second limiting assembly 2372. The first limiting assembly 2371 includes an upper limiting block 23711 and a lower limiting block 23712 connected above and below the fixed support 232, respectively, to limit the lifting range of the lifting frame 2332. The second limiting assembly 2372 includes a left limiting block 23721 and a right limiting block 23722 connected to the left and right sides of the horizontal part, respectively. A first limiting block is provided below the sliding plate 23432 to cooperate with the left and right limiting blocks, thereby limiting the horizontal movement range of the sliding plate 23432. By establishing the vertical and horizontal movement boundaries for the support assembly 231 through the first limiting assembly 2371 and the second limiting assembly 2372, the repeatability and trajectory consistency of the lifting or translational movements are ensured. When the movement reaches the preset limit position, the power can be cut off or the brake can be triggered to prevent collisions, structural damage or even load falls caused by mechanical overshoot, thus fundamentally ensuring the safety of equipment and personnel and improving equipment safety.

[0048] Preferably, a reinforcing plate 23713 is connected between the upper limit block 23711 and the lower limit block 23712 to enhance the overall structural strength of the first limiting component 2371.

[0049] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly; for example, "connect" can mean 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 based on the specific circumstances.

[0050] 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.

[0051] 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.

[0052] 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, the embodiments of the present invention can have various modifications and variations. 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 assembly platform positioning system, characterized in that, include: A roller platform (1) is connected to the ground and has multiple rollers (11) on it. The assembly tool (2) is connected to the top of the plurality of rollers (11) and includes an assembly base (21) and a first positioning device (22). The first positioning device (22) is connected to the top of the assembly base (21) to position the front and rear vehicle bodies. The positioning slide (3) includes two second positioning devices (31) located on both sides of the roller platform (1). The second positioning device (31) includes a positioning component (311) for supporting the front floor and a drive mechanism (32) for driving the positioning component (311) to move horizontally and vertically. The control system is connected to the first positioning device (22) and the positioning slide (3). The control system is configured to control the first positioning device (22) and the positioning slide (3) to move to a preset working position according to the input vehicle model information, so as to realize the positioning and support of the front body, the rear body and the front floor.

2. The vehicle assembly platform positioning system according to claim 1, characterized in that, The drive mechanism (32) includes: A horizontal motion component (321) is located on the outside of the roller platform (1) and is used to drive the positioning component (311) to perform horizontal movement; A vertical motion component (322) is connected to the horizontal motion component (321) to drive the positioning component (311) to move linearly in the vertical direction.

3. The vehicle assembly platform positioning system according to claim 2, characterized in that, The positioning component (311) includes: Mounting base (3111) is connected to the vertical motion component (322); A switching component (3112) is connected to the end of the mounting base (3111) away from the vertical motion component (322); The positioning component (3113) is connected to the switching component (3112). The switching component (3112) is connected to the control system, which can drive the switching component (3112) to clamp or release the positioning component (3113) so as to switch the corresponding positioning component (3113) according to different vehicle models.

4. The vehicle body assembly platform positioning system according to claim 3, characterized in that, The positioning component (3113) includes a fixing block (31131), a fixing rod (31132), and a positioning pin (31133). The fixing rod (31132) is connected between the fixing block (31131) and the positioning pin (31133) so that the positioning pin (31133) matches the front floor. The switching component (3112) includes: The pneumatic connector (31121) includes a female connector unit connected to the mounting base (3111) and a male connector unit connected to the positioning assembly (3113), the female connector unit and the male connector unit being disposed opposite to each other; Clamping (31122) for clamping the fixing block (31131). A pneumatic mechanism (31123) is connected to the pneumatic-electric connector (31121) and is used to drive the female connector unit and the male connector unit to lock or disengage.

5. The vehicle body assembly positioning system according to claim 1, characterized in that, The front floor includes a vehicle body beam, and the assembly tool (2) also includes a support device (23) connected to the top of the assembly base (21). The support device (23) can abut against the vehicle body beam to limit and support it.

6. The vehicle body assembly positioning system according to claim 5, characterized in that, The support device (23) includes: Support assembly (231) for supporting the vehicle body beam; A fixed support (232) is connected to the assembly base (21); The lifting assembly (233) is connected to the fixed support (232) and is used to drive the support assembly (231) to perform lifting movements; A sliding assembly (234), connected to the lifting assembly (233) and the support assembly (231), is used to drive the support assembly (231) to slide horizontally so that the support assembly (231) extends into or out of the vehicle body.

7. The vehicle body assembly positioning system according to claim 6, characterized in that, The lifting assembly (233) includes: A lifting cylinder (2331) is connected to one side of the fixed support (232); The lifting frame (2332) includes a first connecting plate (23321) and a lifting plate (23322). One end of the first connecting plate (23321) is connected to the driving end of the lifting cylinder (2331), and the other end extends to the side of the fixed support (232) away from the lifting cylinder (2331) and is connected to the bottom of the lifting plate (23322). The sliding assembly (234) is connected to the top of the lifting plate (23322). The lifting cylinder (2331) drives the sliding component (234) and the support component (231) to move up and down through the lifting frame (2332).

8. The vehicle assembly platform positioning system according to claim 7, characterized in that, The sliding assembly (234) includes: The L-shaped frame (2341) includes a horizontal part and a vertical part, wherein the vertical part is connected to the lifting plate (23322). A sliding cylinder (2342) is connected below the horizontal section; The sliding frame (2343) includes a second connecting plate (23431) and a sliding plate (23432). The bottom of the second connecting plate (23431) is connected to the drive end of the sliding cylinder (2342), and the sliding plate (23432) is located above the horizontal part and connected to the top of the second connecting plate (23431). The support assembly (231) is connected to the side of the sliding plate (23432) near the vehicle body, and the sliding cylinder (2342) can drive the sliding frame (2343) and the support assembly (231) on it to extend into or out of the vehicle body.

9. The vehicle body assembly positioning system according to claim 8, characterized in that, The support component (231) includes: A support base (2311) is connected to the sliding plate (23432) on the side near the vehicle body; The support arm (2312) is connected above the support base (2311); The support block (2313) is connected to the end of the support arm (2312).

10. The vehicle body assembly positioning system according to claim 9, characterized in that, The support device (23) further includes a reinforcing component (235), which includes: The first reinforcing plate (2351) is connected to the upper surface of the sliding plate (23432). Two second reinforcing plates (2352) are symmetrically connected to the lower surface of the sliding plate (23432) located below the support base (2311); The length ratio of the first reinforcing plate (2351) to the length of the sliding plate (23432) is greater than or equal to 0.

5.

11. The vehicle assembly platform positioning system according to claim 8, characterized in that, The support device (23) further includes a guide component (236), the guide component (236) comprising: The first guide assembly (2361) includes a first guide rail (23611) and a first guide block (23612). The first guide rail (23611) is connected to the side of the fixed support (232) away from the lifting cylinder (2331). The first guide block (23612) is connected between the first guide rail (23611) and the lifting plate (23322) to vertically guide the movement of the lifting plate (23322). The second guide assembly (2362) includes a second guide rail (23621) and a second guide block (23622). The second guide rail (23621) is connected to the top of the horizontal part, and the first guide block (23612) is connected between the second guide rail (23621) and the sliding plate (23432) to guide the sliding plate (23432) horizontally.

12. The vehicle body assembly positioning system according to claim 11, characterized in that, The second connecting plate (23431) is connected to a protective cover (2344) on the side away from the support assembly (231). The horizontal part and the second guide rail (23621) on the side away from the support assembly (231) both pass through the second connecting plate (23431) and are inserted into the interior of the protective cover (2344).

13. The vehicle body assembly positioning system according to claim 8, characterized in that, The support device (23) further includes a limiting component (237), the limiting component (237) comprising: The first limiting component (2371) includes an upper limit block (23711) and a lower limit block (23712) respectively connected above and below the fixed support (232) to limit the lifting range of the lifting frame (2332); The second limiting component (2372) includes a left limiting block (23721) and a right limiting block (23722) respectively connected to the left and right sides of the horizontal portion. A first limiting block is provided below the sliding plate (23432) to cooperate with the left limiting block and the right limiting block to limit the horizontal movement range of the sliding plate (23432).

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