Body assembly platform device

Abstract

The invention provides a body assembly platform device, which comprises an assembly platform body, a bracket and an anti-explosion electric cabinet, and is characterized in that the anti-explosion electric cabinet is mounted in the assembly platform body and is used for accommodating a control system of the body assembly platform; the bracket is connected with a linear guide rail on the assembling platform body through a sliding block and provided with a mechanical connector connected with a rack on the assembling platform body. And the bracket can realize three-degree-of-freedom adjustment of translation along the axis of the product on the linear guide rail, lifting perpendicular to the horizontal plane and rolling around the axis of the product. The control system is adopted for production line scheduling, no person participates in the whole transfer process, information can be integrated to the production line management and control system, digitization and informatization of transfer assembly can be achieved, the working intensity of workers can be greatly relieved, and the assembly speed can be effectively increased.

Description

Technical Field

[0001] This invention relates to the field of automated manufacturing technology, and more specifically to a body assembly platform device. Background Technology

[0002] Currently, the transfer, mounting, docking, weighing, rolling, and center of gravity calculation of certain product components during final assembly and testing are mainly carried out by workers and hoisting. This process is complex, makes product transfer across regions difficult, involves a large amount of manual labor, requires significant personnel, and is highly dependent on operators. Furthermore, weighing is primarily done using floor scales, which increases the workload related to hoisting and turnover. The varying dimensions of aerospace product components necessitate the use of different hoisting fixtures, further complicating operations and wasting considerable production, waiting, management time, and on-site storage space. Moreover, current final assembly and testing is product-based, leading to frequent product handovers, difficulties in product changeovers, and an inability to achieve flexible product manufacturing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and design a body assembly platform device that can automatically transfer, dock, weigh, and calculate the center of mass of the product segments. It is equipped with linear rails and traditional steel rails. The production line operation process is centrally controlled and the end data information is digitally collected. It is also equipped with quick-change interfaces to realize flexible processing of products and has strong compatibility.

[0004] The objective of this invention is achieved through the following technical solutions:

[0005] This invention provides a body assembly platform device, including an assembly platform body, a bracket, and an explosion-proof electrical cabinet. The assembly platform body includes a body frame, a checkered steel plate, linear guide rails, a chain support, a steel rail, a rack, and a static discharge box. The body frame includes a support frame composed of crossbeams, longitudinal beams, and legs, and a top frame welded to the top of the support frame. The top frame has, in the width direction, a linear guide rail groove, a rack groove, a chain support groove, and a steel rail groove that run through the entire length direction. The linear guide rail groove, rack mounting groove, chain support groove, and steel rail groove are each aligned with the axis along the length direction of the top frame. According to the design, the linear guide rail, rack, chain carrier, and rail are respectively laid in the linear guide rail groove, rack mounting groove, chain carrier groove, and rail groove; the patterned steel plate is laid on the upper surface of the outer wall of the linear guide rail groove, and the patterned steel plate has an opening for the static electricity box installation. The static electricity box is embedded in the outer wall of the linear guide rail groove and its upper end is flush with the patterned steel plate; the explosion-proof electrical cabinet is located between the two rail grooves and is used to install the body assembly platform control system; the bracket is connected to the linear guide rail through a slider and has a mechanical interface for connecting to the rack.

[0006] According to the body assembly platform device of the present invention, one of the linear guides is provided with a limit in the width direction of the linear guide groove and is designated as the reference side, while the other linear guide is designated as the driven side.

[0007] According to the body assembly platform device of the present invention, the static electricity conductive box contains copper conductive pillars for grounding and conduction.

[0008] According to the body assembly platform device of the present invention, the cable connected to the bracket is arranged in the cable chain and enters the explosion-proof electrical box through the cable chain, and the fixed end of the cable chain is located at the middle position in the length direction of the cable chain groove.

[0009] According to the body assembly platform device of the present invention, heavy-duty foot cups are installed at the bottom of the support legs for adjusting the height of the body assembly platform.

[0010] According to the body assembly platform device of the present invention, a lifting ring is provided on the upper plane of the outer edge of the top frame along the length direction.

[0011] According to the body assembly platform device of the present invention, two sets of QR codes are installed at the bottom of the body frame for positioning and arranging the body assembly platform.

[0012] According to the body assembly platform device of the present invention, the bracket includes a rotary bracket and a roller ring, the roller ring being connected to the rotary bracket.

[0013] According to the body assembly platform device of the present invention, the rotation of the rotary bracket adopts a roller type, which, together with the roller ring, achieves N×360° rotation.

[0014] According to the body assembly platform device of the present invention, the rotary bracket includes a bottom support assembly and a lifting support assembly, wherein the lifting support assembly is connected to the bottom support assembly.

[0015] According to the body assembly platform device of the present invention, the bottom support assembly includes a base plate, a guide support assembly, a weighing assembly, a lateral movement drive assembly, a lifting drive assembly, an emergency stop button, a touch screen, and a manual control box. The guide support assemblies are symmetrically installed on the short side of the base plate, the weighing assembly is installed between the guide support assemblies, and the lateral movement drive assembly is installed between the guide support assemblies and the base plate. The lifting drive assembly is installed between two sets of guide support assemblies. The emergency stop button, touch screen, and manual control box are installed on the guide support assemblies. A connecting slider is provided on the inner wall of the guide assembly, and the slider for connecting with the linear guide rail is provided under the base plate.

[0016] According to the body assembly platform device of the present invention, the weighing component includes a support plate, a limiting rod, a weighing sensor, a connecting plate, and a weighing top plate; the limiting rod is symmetrically installed on the support plate, the weighing sensor is correspondingly installed behind the limiting rod and connected to the limiting rod through the connecting plate, and the weighing top plate is installed above the weighing sensor.

[0017] According to the body assembly platform device of the present invention, the transverse drive assembly includes a servo motor, a planetary reducer and a worm gear assembly. The servo motor and planetary reducer drive a transmission shaft through a pair of gears. The transmission shaft drives the worm gear assembly to rotate. The worm gear drives the transverse gear to rotate. The transverse gear meshes with the rack to cause the bracket to move laterally.

[0018] According to the body assembly platform device of the present invention, the lifting drive assembly includes a servo motor, a planetary reducer and a screw jack. The servo motor and planetary reducer drive the transmission shaft through a pair of gears. The transmission shaft simultaneously drives two screw jacks to move synchronously, thereby driving the bracket to lift.

[0019] According to the body assembly platform device of the present invention, the lifting support assembly includes an arc-shaped lifting frame, a rolling ring support wheel, a limiting wheel, and a rolling transmission assembly. The rolling ring support wheel is perpendicular to the arc-shaped surface of the arc-shaped lifting frame and passes through it for fixing. It is designed as an even number of wheels and is evenly distributed within 90°. The limiting wheel is symmetrically arranged inside the arc-shaped lifting frame. The rolling transmission assembly is connected to the rolling ring support wheel to provide rolling power for the rolling ring. The outer side of the side elevation of the arc-shaped lifting frame is provided with a guide rail for connecting and assembling with the connecting slider. A rolling ring locking mechanism is provided on the arc-shaped lifting frame.

[0020] According to the body assembly platform device of the present invention, the rolling transmission assembly includes a servo motor, a planetary reducer and a worm gear assembly. The servo motor, planetary reducer and worm gear assembly drive a set of rolling ring support wheels. The rolling ring support wheels are in close contact with the rolling ring, and the rolling ring is rolled by friction transmission.

[0021] According to the body assembly platform device of the present invention, a rotary encoder is installed inside the bow-shaped lifting frame, and a rubber-coated roller is installed at the shaft end of the rotary encoder. The rubber-coated roller is in close contact with the rolling ring to measure the rolling angle of the rolling ring.

[0022] According to the body assembly platform device of the present invention, the rolling ring has a three-part structure, namely an upper left half ring, an upper right half ring, and a lower ring. The upper left half ring and the upper right half ring are connected by a swivel bolt, and the upper left half ring and the upper right half ring are connected to the lower ring by a hinge. A nitrogen spring is used to balance the weight of the upper left half ring and the upper right half ring.

[0023] According to the body assembly platform device of the present invention, the inner surface of the roller ring is covered with an antistatic felt.

[0024] According to the body assembly platform device of the present invention, a power supply socket mounting port and a communication socket mounting port are provided on the outer side of the body frame.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] (1) This invention can realize the transfer, docking and automatic calculation and generation of the quality centroid of products in the factory. During the transportation process, it can greatly reduce the workload of workers and effectively improve the transfer speed.

[0027] (2) The present invention uses a production line control system for scheduling. The control system executes specific operations. The entire transfer process is unmanned. The information can be integrated into the production line management system, which can realize the digitalization and informatization of transfer assembly.

[0028] (2) By setting up a quick-change interface, the present invention can realize flexible processing of products, enhance applicability, realize unified management and control, break the island of processing and business management processes between products of different specifications, and realize multi-variety processing of products. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the body assembly platform device of the present invention;

[0030] Figure 2 This is a schematic diagram of the assembly platform body structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the body frame structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the bracket structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the bottom support component structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the weighing component structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the transverse drive component structure of the present invention;

[0036] Figure 8 This is a schematic diagram of the lifting drive component structure of the present invention;

[0037] Figure 9 This is a schematic diagram of the lifting support assembly structure of the present invention;

[0038] Figure 10This is a schematic diagram of the roll drive component structure of the present invention;

[0039] Figure 11 This is a schematic diagram of the rolling ring structure of the present invention;

[0040] Figure 12 This is a schematic diagram of another embodiment of the present invention that uses a car frame to replace the bracket;

[0041] Among them, 1-assembly platform body, 2-bracket, 3-explosion-proof electrical cabinet, 4-body frame, 5-patterned steel plate, 6-linear guide rail, 7-chain support, 8-steel rail, 9-rack, 10-static discharge box, 11-heavy-duty feet, 12-lifting ring, 13-crossbeam, 14-longitudinal beam, 15-outrigger, 16-top frame, 17-QR code, 18-power socket mounting port, 19-communication socket mounting port, 20-slewing bracket, 21-roll ring, 22-bottom support assembly, 23-lifting support assembly, 24-slider, 25-base plate, 26-guide support assembly, 27-weighing assembly, 28-lateral movement drive assembly, 29-lifting drive assembly, 30-emergency stop button, 31-touch screen, 32- Hand-operated box, 33-connecting slider, 34-support plate, 35-limit rod, 36-weighing sensor, 37-connecting plate, 38-weighing top plate, 39-servo motor, 40-planetary reducer, 41-worm gear assembly, 42-transverse gear, 43-servo motor, 44-planetary reducer, 45-screw jack, 46-arch lifting frame, 47-rolling ring support wheel, 48-limiting wheel, 49-rolling transmission assembly, 50-guide rail, 51-rotary encoder, 52-servo motor, 53-planetary reducer, 54-worm gear assembly, 55-upper ring left half ring, 56-upper ring right half ring, 57-lower ring, 58-swivel bolt connection, 59-nitrogen spring, 60-carriage frame. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0043] This invention provides a body assembly platform device, such as... Figure 1 As shown, it includes the assembly platform body 1, the bracket 2, and the explosion-proof electrical cabinet 3.

[0044] like Figure 2 As shown, the assembly platform body 1 includes a body frame 4, a patterned steel plate 5, a linear guide rail 6, a carrier chain 7, a steel rail 8, a rack 9, and a static discharge box 10.

[0045] like Figure 3As shown, the body frame includes a support frame composed of crossbeams 13, longitudinal beams 14, and legs 15, and a top frame 16 welded to the top of the support frame. Two sets of QR codes 17 are installed at the bottom of the body frame 4 for positioning the body assembly platform. A power socket mounting port 18 and a communication socket mounting port 19 are provided on the outer side of the body frame 4.

[0046] like Figure 2 As shown, the top frame 16 is provided with linear guide rail groove, rack groove, chain support groove and rail groove in the width direction from the outside to the inside, which run through the entire length direction. The linear guide rail groove, rack mounting groove, chain support groove and rail groove are symmetrically designed along the length axis of the top frame 16. The linear guide rail 6, rack 9, chain support 7 and rail 8 are respectively laid in the linear guide rail, rack groove, chain support groove and rail groove. The patterned steel plate 5 is laid on the upper surface of the outer wall of the linear guide rail groove to play a role in anti-slip. The patterned steel plate 5 is installed on the platform frame by means of stainless steel countersunk screws and mounting brackets, and the burrs and sharp corners are rounded off. The patterned steel plate 5 has an installation port for a static discharge box 10, which is embedded in the outer wall of the linear guide rail groove and flush with the upper end of the patterned steel plate 5. The explosion-proof electrical cabinet 3 is located between the two rail grooves and is used to house the control system of the body assembly platform. The bracket 2 is connected to the linear guide rail 6 via a slider 24 and has a mechanical interface for connecting to the rack 9. Heavy-duty feet 11 are installed at the bottom of the support legs 15 to adjust the height of the body assembly platform. Lifting rings 12 are installed along the length of the upper surface of the outer edge of the top frame 16.

[0047] According to a specific embodiment of the present invention, one of the linear guides 6 is provided with a limit in the width direction of the linear guide groove and is designated as the reference side, while the other linear guide is designated as the driven side.

[0048] According to a specific embodiment of the present invention, the static discharge box 10 contains copper conductive pillars for grounding and conduction.

[0049] According to a specific embodiment of the present invention, the cable connected to the bracket 2 is arranged in the cable chain 7 and enters the explosion-proof electrical cabinet 3 through the cable chain 7. The upper surface of the cable chain 7 is flush with the upper surface of the assembly platform to avoid personnel tripping and causing danger. The fixed end of the cable chain 7 is set at the middle position in the length direction of the cable chain groove to ensure that the running stroke of the bracket 2 fully covers the length direction of the assembly platform.

[0050] like Figure 4 As shown, the bracket 2 includes a slewing bracket 20 and a roller ring 21, with the roller ring 21 connected to the slewing bracket 20. The slewing bracket includes a bottom support assembly 22 and a lifting support assembly 23, with the lifting support assembly 23 connected to the bottom support assembly 22.

[0051] According to a specific embodiment of the present invention, the slewing bracket (20) is rolled in a roller manner, and in conjunction with the rolling ring (20), it achieves N×360° rolling.

[0052] like Figure 5 As shown, the bottom support assembly 22 includes a base plate 25, a guide support assembly 26, a weighing assembly 27, a lateral movement drive assembly 28, a lifting drive assembly 29, an emergency stop button 30, a touch screen 31, and a manual control box 32. The guide support assemblies 26 are symmetrically installed on the short side of the base plate 25. The weighing assembly 27 is installed between the guide support assemblies 26. The lateral movement drive assembly 28 is installed between the guide support assemblies 26 and the base plate 25. The lifting drive assembly 29 is installed between the two sets of guide support assemblies 26. The emergency stop button 30, the touch screen 31, and the manual control box 32 are installed on the guide support assemblies. A connecting slider 33 is provided on the inner wall of the guide support assembly 26. A slider 24 for connecting with the linear guide rail 6 is provided under the base plate 25.

[0053] like Figure 6 As shown, the weighing assembly 27 includes a support plate 34, a limiting rod 35, a weighing sensor 36, a connecting plate 37, and a weighing top plate 38. The limiting rod 35 is symmetrically installed on the support plate 34, the weighing sensor 36 is correspondingly installed behind the limiting rod 35 and connected to the limiting rod 35 through the connecting plate 37, and the weighing top plate 38 is installed above the weighing sensor 36.

[0054] like Figure 7 As shown, the transverse drive assembly 28 includes a servo motor 39, a planetary reducer 40, and a worm gear assembly 41. The servo motor 39 and the planetary reducer 40 drive the transmission shaft through a pair of gears. The transmission shaft drives the worm gear assembly 41 to rotate. The worm gear drives the transverse gear 42 to rotate. The transverse gear 42 meshes with the rack 9, causing the bracket 2 to move laterally.

[0055] like Figure 8 As shown, the lifting drive assembly 29 includes a servo motor 43, a planetary reducer 44, and a screw jack 45. The servo motor 43 and the planetary reducer 44 drive the transmission shaft through a pair of gears. The transmission shaft simultaneously drives the two screw jacks 45 to move synchronously, thereby driving the bracket 2 to lift.

[0056] like Figure 9As shown, the lifting support assembly 23 includes an arc-shaped lifting frame 46, a rolling ring support wheel 47, a limiting wheel 48, and a rolling transmission assembly 49. The rolling ring support wheel 47 passes vertically through the arc-shaped surface of the arc-shaped lifting frame 46 and is designed as an even number, evenly distributed within 90°. The limiting wheel 48 is symmetrically arranged inside the arc-shaped lifting frame 46. The rolling transmission assembly 49 is connected to the rolling ring support wheel 47, providing rolling power for the rolling ring. A guide rail 50 is provided on the outer side of the side facade of the arc-shaped lifting frame 46 for connection and assembly with the connecting slider 33. A locking mechanism for the rolling ring 21 is provided on the arc-shaped lifting frame 46. A rotary encoder 51 is installed inside the arc-shaped lifting frame 46. A rubber-coated roller is installed on the shaft end of the rotary encoder 51. The rubber-coated roller is in close contact with the rolling ring 21 to measure the rolling angle of the rolling ring 21.

[0057] like Figure 10 As shown, the rolling transmission assembly 49 includes a servo motor 52, a planetary reducer 53, and a worm gear assembly (54). The servo motor 52 + planetary reducer 53 + worm gear assembly 54 drive a set of rolling ring support wheels 47. The rolling ring support wheels 47 are in close contact with the rolling ring 21, and the rolling ring 21 is made to roll through friction transmission.

[0058] like Figure 11 As shown, the rolling ring 21 has a 3-part structure, namely the upper left half ring 55, the upper right half ring 56, and the lower ring 57. The upper left half ring 55 and the upper right half ring 56 are connected by a slip bolt 58, and the upper left half ring 55 and the upper right half ring 56 are connected to the lower ring 57 by a hinge. A nitrogen spring 59 is used to balance the weight of the upper left half ring 55 and the upper right half ring 56.

[0059] According to a specific embodiment of the present invention, an antistatic felt is laid on the inner side of the rolling ring 21.

[0060] According to another embodiment of the present invention, the bracket can be replaced by a trolley 60, and the movement of the assembled product along the length of the assembly platform is realized through the cooperation between the trolley wheels and the rails 8. Figure 12 As shown.

[0061] The contents not described in detail in this specification are common knowledge to those skilled in the art.

[0062] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A body assembly platform device, comprising an assembly platform body (1), a bracket (2), and an explosion-proof electrical cabinet (3), wherein the assembly platform body (1) comprises a body frame (4), a patterned steel plate (5), a linear guide rail (6), a chain (7), a steel rail (8), a rack (9), and a static discharge box (10); the body frame comprises a support frame composed of a crossbeam (13), a longitudinal beam (14), and a support leg (15) and a top frame (16) welded to the top of the support frame, wherein the top frame (16) is provided with a linear guide rail groove, a rack groove, a chain groove, and a steel rail groove running through the entire length direction from the outside to the inside in the width direction, wherein the linear guide rail groove, the rack mounting groove, the chain groove, and the steel rail groove are symmetrically designed along the length axis of the top frame (16), and the linear guide rail (6), the rack (9), the chain (7), and the steel rail (8) are respectively laid on the linear guide rail. The guide rail, rack groove, chain track groove and rail groove are located inside the guide rail, rack groove, chain track and rail groove; the patterned steel plate (5) is laid on the upper surface of the outer wall of the linear guide rail groove, and the patterned steel plate (5) has an installation port for the static electricity box (10); the static electricity box (10) is embedded in the outer wall of the linear guide rail groove and its upper end is flush with the patterned steel plate (5), and the static electricity box (10) contains copper conductive columns for grounding and conduction; the upper surface of the outer edge of the top frame (16) is provided with a lifting ring (12) along the length direction; the outer side of the body frame (4) is provided with a power socket installation port (18) and a communication socket installation port (19); the explosion-proof electrical cabinet (3) is located between the two rail grooves and is used to accommodate the control system of the body assembly platform; the bracket (2) is connected to the linear guide rail (6) through a slider (24) and is provided with a mechanical interface for connecting to the rack (9).

2. The body fitment platform apparatus of claim 1, wherein: One of the linear guides (6) is limited in the width direction of the linear guide groove and is designated as the reference side, while the other linear guide is designated as the driven side.

3. The body assembly platform device according to claim 1, characterized in that: The cable connected to the bracket (2) is arranged in the cable chain (7) and enters the explosion-proof electrical cabinet (3) through the cable chain (7). The fixed end of the cable chain (7) is located at the middle position in the length direction of the cable chain groove.

4. The body assembly platform device according to claim 1, characterized in that: The bottom of the outrigger (15) is equipped with a heavy-duty foot cup (11) for adjusting the height of the body assembly platform.

5. The body assembly platform device according to claim 1, characterized in that: Two sets of QR codes (17) are installed at the bottom of the body frame (4) for positioning the body assembly platform.

6. The body assembly platform device according to claim 1, characterized in that: The bracket (2) includes a rotary bracket (20) and a roller ring (21). The roller ring (21) is connected to the rotary bracket (20), and the inner side of the roller ring (21) is covered with an antistatic felt.

7. The body assembly platform device according to claim 6, characterized in that: The slewing bracket (20) rolls using a roller type, which, together with the rolling ring (20), achieves N×360° rolling.

8. The body assembly platform device according to claim 6, characterized in that: The slewing bracket (20) includes a bottom support assembly (22) and a lifting support assembly (23), the lifting support assembly (23) being connected to the bottom support assembly (22).

9. The body assembly platform device according to claim 8, characterized in that: The bottom support assembly (22) includes a base plate (25), a guide support assembly (26), a weighing assembly (27), a lateral drive assembly (28), a lifting drive assembly (29), an emergency stop button (30), a touch screen (31), and a manual control box (32). The guide support assembly (26) is symmetrically installed on the short side of the base plate (25). The weighing assembly (27) is installed between the guide support assemblies (26). The lateral drive assembly (28) is installed between the guide support assembly (26) and the base plate (25). The lifting drive assembly (29) is installed between the two sets of guide support assemblies (26). The emergency stop button (30), the touch screen (31), and the manual control box (32) are installed on the guide support assembly. A connecting slider (33) is provided on the inner wall of the guide support assembly (26). The slider (24) for connecting with the linear guide rail (6) is provided under the base plate (25).

10. The body assembly platform device according to claim 9, characterized in that: The weighing assembly (27) includes a support plate (34), a limiting rod (35), a weighing sensor (36), a connecting plate (37), and a weighing top plate (38). The limiting rod (35) is symmetrically installed on the support plate (34), the weighing sensor (36) is correspondingly installed behind the limiting rod (35) and connected to the limiting rod (35) through the connecting plate (37), and the weighing top plate (38) is installed above the weighing sensor (36).

11. The body assembly platform device according to claim 9, characterized in that: The transverse drive assembly (28) includes a servo motor (39), a planetary reducer (40), and a worm gear assembly (41). The servo motor (39) and the planetary reducer (40) drive the transmission shaft through a pair of gears. The transmission shaft drives the worm gear assembly (41) to rotate. The worm gear drives the transverse gear (42) to rotate. The transverse gear (42) meshes with the rack (9) to make the bracket (2) move laterally.

12. The body assembly platform device according to claim 9, characterized in that: The lifting drive assembly (29) includes a servo motor (43), a planetary reducer (44), and a screw jack (45). The servo motor (43) and the planetary reducer (44) drive the transmission shaft through a pair of gears. The transmission shaft simultaneously drives the two screw jacks (45) to move synchronously, thereby driving the bracket (2) to lift.

13. The body assembly platform device according to claim 8, characterized in that: The lifting support assembly (23) includes an arc-shaped lifting frame (46), a rolling ring support wheel (47), a limiting wheel (48), and a rolling transmission assembly (49). The rolling ring support wheel (47) passes vertically through the arc-shaped surface of the arc-shaped lifting frame (46) and is designed as an even number of wheels, evenly distributed within 90°. The limiting wheel (48) is symmetrically arranged inside the arc-shaped lifting frame (46). The rolling transmission assembly (49) is connected to the rolling ring support wheel (47) to provide rolling power for the rolling ring. The outer side of the side facade of the arc-shaped lifting frame (46) is provided with a guide rail (50) for connecting and assembling with the connecting slider (33). A locking mechanism for the rolling ring (21) is provided on the arc-shaped lifting frame (46).

14. The body assembly platform device according to claim 13, characterized in that: The rolling transmission assembly (49) includes a servo motor (52), a planetary reducer (53), and a worm gear assembly (54). The servo motor (52) + planetary reducer (53) + worm gear assembly (54) drives a set of rolling ring support wheels (47). The rolling ring support wheels (47) are in close contact with the rolling ring (21), and the rolling ring (21) is rolled by friction transmission.

15. The body assembly platform device according to claim 13, characterized in that: A rotary encoder (51) is installed inside the bow-shaped lifting frame (46). A rubber-coated roller is installed at the shaft end of the rotary encoder (51). The rubber-coated roller is in close contact with the rolling ring (21) to measure the rolling angle of the rolling ring (21).

16. The body assembly platform device according to claim 6, characterized in that: The rolling ring (21) has a 3-part structure, namely the upper left half ring (55), the upper right half ring (56) and the lower ring (57). The upper left half ring (55) and the upper right half ring (56) are connected by a slip bolt (58), and the upper left half ring (55) and the upper right half ring (56) are connected to the lower ring (57) by a hinge. A nitrogen spring (59) is used to balance the weight of the upper left half ring (55) and the upper right half ring (56).

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