White body structure clamping and overturning mechanism and loading vehicle for welding operation

Abstract

The present application relates to the technical field of automobile body-in-white welding production auxiliary equipment, and discloses a body-in-white structural part clamping and overturning mechanism and a loading vehicle for welding operation, wherein the overturning support mechanism is arranged on the ground; the overturning driving positioning mechanism is fixed to the upper part of the vertical wall on the one side end of the overturning support mechanism; the product part bearing support is pivotally connected to the upper ends of the left and right vertical walls of the overturning support mechanism, and the one side end of the product part bearing support is drivingly connected to the rotating output end of the overturning driving positioning mechanism through a pivot, the overturning driving positioning mechanism can drive the product part bearing support to rotate by 360 degrees along the pivot and be fixed at a set angle in the rotating circumferential direction; the product part connecting rod clamping mechanism is arranged on the product part bearing support, and the product part connecting rod clamping mechanism and the product part bearing support can limit and fix the product part between them in the XYZ three directions; the present application can meet the requirements of clamping and overturning of various structural parts in one vehicle and significantly reduce the production cost.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for automotive body-in-white welding production, and particularly to a body-in-white structural component clamping and flipping mechanism and loading vehicle that can be used for welding operations. Background Technology

[0002] In automotive welding workshops, as the body-in-white and various structural components (such as side panels, hoods, and floors) move along the production line, they need to be precisely placed onto designated positioning fixtures at specific workstations for loading and unloading, manual inspection, manual checks, stud welding, and other operations. Currently, most welding lines use fixed racks or simple turnover carts to carry and transfer product parts. As multi-model mixed-line production becomes mainstream, higher requirements are placed on the flexibility and adjustability of the carrying carts.

[0003] The welding workshop currently uses a fixed product part transfer trolley, whose structure includes: a frame body with casters at the bottom, and several rigid support blocks and positioning pins fixed to the body. During operation, operators or lifting equipment hoist the product parts onto the trolley, use the support blocks and positioning pins to roughly position the product parts, and then manually push the trolley to the next workstation. However, the existing technology has the following insurmountable problems in practical applications in the welding workshop: 1. The product part posture is limited and cannot adapt to the needs of multiple processes: the posture of the product parts on the fixed trolley cannot be adjusted arbitrarily; in processes requiring multi-angle observation, such as manual breaking and inspection, operators need to frequently bend over and lean forward, resulting in high labor intensity and blind spots in inspection; in the stud welding process, the fixed product part posture may prevent the welding torch from achieving the ideal weld. 1. Location; 2. Difficulty in compatibility with multi-model mixed production: A welding line typically needs to produce 2-6 different models; the product parts size, positioning hole position, and support surface height are different for each model; fixed trolleys cannot adapt to this change, resulting in each model needing a dedicated trolley, leading to a large variety of trolleys in the workshop, chaotic management, and high production costs; 3. Cumbersome product clamping operation: Existing trolleys mostly use independent clamps to fix product parts, requiring operators to operate multiple clamps separately, which is not only inefficient, but also prone to product part displacement due to inconsistent clamping force on the left and right sides, affecting welding accuracy; 4. Inconvenient operation at loading and unloading ports: At loading and unloading stations, the lifting device often needs to vertically place or remove product parts, and the fixed-position trolley is prone to interference with the lifting device, increasing the difficulty and time of lifting device operation. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a clamping and flipping mechanism for body-in-white structural components and a loading vehicle suitable for welding operations. This mechanism enables multi-angle adjustment of product components to meet the needs of multi-process operations. It allows for the use of a single vehicle to clamp and flip various structural components for multi-process operations, significantly reducing production costs and lowering production line tooling investment costs by approximately 30%-40%. Furthermore, it achieves simultaneous clamping on both sides with a single handle, completely solving the problems of cumbersome traditional multi-point clamping operations and difficulty in centering. The auxiliary handle mechanism features a dead-point self-locking function, greatly improving safety.

[0005] This invention provides a body-in-white structural component clamping and flipping mechanism that can be used for welding operations, including a flipping support mechanism, a flipping drive positioning mechanism, a product component bearing bracket, and a product component linkage clamping mechanism; The flip support mechanism is mounted on the ground. It provides fixed support for the flip drive positioning mechanism and provides flip accommodating space and support for the product component bearing bracket and the product component linkage clamping mechanism. The flipping drive positioning mechanism is fixed to the upper part of the vertical wall on one side of the flipping support mechanism. The function of the flipping drive positioning mechanism is to provide 360-degree flipping force and limit the setting of the flipping angle. The product component support bracket is pivotally connected to the upper ends of the left and right vertical walls of the flipping support mechanism, and one end of the product component support bracket is connected to the rotation output end of the flipping drive positioning mechanism through the pivot. The flipping drive positioning mechanism can drive the product component support bracket to rotate 360 ​​degrees along the pivot and limit and fix it at a set angle in the rotation circumference. The flipping drive positioning mechanism can provide a 360-degree flipping force to the product component support bracket and limit and fix the product component support bracket at a set flipping angle in the flipping circumference. The product component linkage clamping mechanism is mounted on the product component support bracket. The product component linkage clamping mechanism, in conjunction with the product component support bracket, can fix the product component in three XYZ directions. Operating the product component linkage clamping mechanism, through the linkage structure, drives the clamp to flip downwards, engaging with the positioning pin of the product component support bracket to fix the product component in three XYZ directions (X-axis is the length direction of the flipping support mechanism, Y-axis is the width direction of the flipping support mechanism, and Z-axis is the height direction of the flipping support mechanism). Manually driving the flipping and positioning mechanism to rotate causes the product component support bracket and the product component linkage clamping mechanism to flip together to the optimal viewing angle of the product component, or to the angle most easily accessible to the welding torch, or to an inclined posture that provides clearance for the lifting device. The positioning pin of the flipping and positioning mechanism then limits and fixes the product component, maintaining this flipping angle or posture. This facilitates manual inspection, manual testing, stud welding, or lifting operations on the product component.

[0006] The flipping support mechanism includes a rectangular main frame; each corner of the upper surface of the main frame is provided with an upper surface support steel plate, and a trapezoidal vertical support frame is fixedly connected to the upper surface support steel plates on the left and right sides of the upper surface of the main frame. The function of the upper surface support steel plates is to increase the connection strength between the two lower ends of each vertical support frame and the two corners of the upper surface of the corresponding main frame; a bearing seat is fixedly connected to the upper surface of each vertical support frame, and the two bearing seats on the left and right are coaxially arranged. The bearing seats are designed to provide rotational support for the product component's load-bearing bracket; each vertical support... The inner sidewalls of the two waists of the trapezoidal support structure are provided with support crossbars to enhance the bending strength of the middle of each vertical support frame. The support crossbars can also be used as handles for easy lifting and transportation. A flip-drive positioning mechanism fixed support base is fixedly connected to the upper outer sidewall of one side of the vertical support frame. The flip-drive positioning mechanism is fixed on the flip-drive positioning mechanism fixed support base. A positioning pin is provided vertically at the front right side of the upper end face of the flip-drive positioning mechanism fixed support base to connect with the support piece, so that the positioning pin of the flip-drive positioning mechanism can slide and engage with it, which can facilitate limiting the rotation of the product component support bracket.

[0007] The tilting drive positioning mechanism includes a right-angle gear reducer, an operating handwheel, a steering positioning disc, and a positioning pin. The right-angle gear reducer is mounted and fixed on the upper surface of the fixed support base of the tilting drive positioning mechanism. The input shaft and output shaft of the right-angle gear reducer intersect at a 90° angle, forming a gear transmission device that simultaneously achieves speed reduction, torque increase, and power reversal. The input shaft of the right-angle gear reducer is rotatably connected to the operating handwheel, and the output shaft of the right-angle gear reducer is rotatably sleeved on the corresponding bearing seat. The free end of the output shaft of the right-angle gear reducer passes through the corresponding bearing seat and is fixedly connected to the center of the steering positioning disc. A positioning pin is provided above the input shaft of the right-angle gear reducer. The positioning pin is slidably connected to the upper surface of the fixed support base of the tilting drive positioning mechanism, and the front end of the positioning pin can slide through the positioning pin to sleeve the support plate and insert and fix it on the steering positioning disc.

[0008] The steering positioning plate is a circular steel plate with several weight-reducing holes evenly distributed around its outer edge. Several pin holes are also evenly distributed around the outer edge of the circular steel plate. The front end of the positioning pin can be inserted and fixed in the pin hole. The corresponding side end of the product component support bracket is fixed to one end face of the circular steel plate. By turning the operating handwheel, the right-angle gear reducer drives the steering positioning plate to rotate. The product component support bracket rotates synchronously with the steering positioning plate. When the product component support bracket rotates to the required tilt angle, the positioning pin is inserted into the corresponding pin hole of the steering positioning plate, keeping the tilt angle of the product component support bracket in a fixed state.

[0009] The product component support bracket includes a rectangular frame. The outer wall of the left end of the rectangular frame is aligned and fixed to the middle of the right side of a circular steel plate. Three supporting longitudinal beams are welded along the length of the rectangular frame. Three first bearing steel plates are evenly arranged along the length of the upper end face of each supporting longitudinal beam. Guide blocks are detachably fixed to the first bearing steel plates at both ends of each supporting longitudinal beam. Positioning pins are also detachably fixed to the first bearing steel plates at both ends of the left side. The guide blocks and positioning pins are designed to be detachable to accommodate the positioning requirements of two different product components, allowing the same working surface to be compatible with two different models of product components. The fixed position on the first bearing steel plate can be adjusted according to the length and width of different product parts to accurately position and place different product parts. A vertical connecting piece and a horizontal rotating shaft are provided on the outer wall of the right end frame wall of the rectangular frame, which is aligned with the bearing seat on the upper end face of the right vertical support frame. The vertical connecting piece is welded and fixed to the middle of the outer wall of the right end frame wall of the rectangular frame. The left end of the horizontal rotating shaft is welded and fixed to the right side face of the vertical connecting piece, and the horizontal rotating shaft is rotatably connected to the bearing seat on the upper end face of the right vertical support frame. The vertical connecting piece and the horizontal rotating shaft serve as the driven end of the product part bearing bracket, and together with the output shaft of the right angle gear reducer at the drive end, they provide rotational support for the product part bearing bracket.

[0010] Each of the supporting longitudinal beams of the product component support bracket has a second supporting steel plate at the lower end corresponding to the position of the first supporting steel plate. All the second supporting steel plates are located on the same horizontal plane. The reverse side (non-working surface) of the product component support bracket is welded with coplanar steel plates, which can be used for simple placement of product components (such as temporary storage or processes that do not require precise positioning), so that the product component support bracket can serve two purposes.

[0011] The product component linkage clamping mechanism includes a wrench hinge seat, a wrench, a first adapter hinge, a hinge seat transmission link, a second adapter hinge, a central synchronous diverter link, a first push-pull rod, a second push-pull rod, a second rotating shaft hinge arm, a first clamp rotating shaft, a second clamp rotating shaft, four first clamps, four second clamps, a first rotating shaft, and a second rotating shaft. The central synchronous diverter link is pivotally connected to the lower end of the left side frame wall of the rectangular frame. One end of the first push-pull rod is hinged to the upper part of the central synchronous diverter link, and the other end of the first push-pull rod is hinged to the first clamp rotating shaft. The first clamp rotating shaft is sleeved and fixed to the left side of the first rotating shaft. The four first clamps are arranged in pairs adjacent to each other. The first load-bearing steel plates at the lower ends of the two sets of supporting longitudinal beams on the left and right sides are fixed to the first rotating shaft. The upper end of the central synchronous diverting connecting rod is hinged to one end of the second transition hinge, and the other end of the second transition hinge is hinged to one end of the hinge seat transmission connecting rod. The hinge seat transmission connecting rod is slidably sleeved on the left side of the wrench hinge seat. One end of the first transition hinge is rotatably connected to the other end of the hinge seat transmission connecting rod. The wrench is rotatably connected to the wrench hinge seat via a vertical shaft. The other end of the first transition hinge is hinged to the wrench near the vertical shaft. The wrench hinge seat is fixed to the upper end face of the left side frame wall of the rectangular frame. The lower end of the central synchronous diverting connecting rod is hinged to one end of the second push-pull rod. The other end of the rod is hinged to the second clamp shaft. The second clamp shaft is sleeved and fixed to the left side of the second shaft. The four second clamps are arranged in pairs, forming two groups, respectively corresponding to the positions of the first bearing steel plates on the upper ends of the support longitudinal beams on the left and right sides, and are fixed on the second shaft. The two ends of the first shaft and the two ends of the second shaft are rotatably connected to the upper and lower ends of the left and right side frame walls of the rectangular frame, respectively. Opening condition: The operator rotates the wrench horizontally to the outside of the wrench hinge seat. The wrench rotates around the vertical axis of the wrench hinge seat to the outside of the wrench hinge seat, and the wrench and the wrench hinge seat are in the same plane. The first transition hinge connected to the wrench drives the hinge seat transmission link to translate to the right side of the wrench hinge seat. The second transition hinge The chain drives the upper end of the central synchronous diverting link to rotate to the right around the pivot in the middle of the central synchronous diverting link. The first push-pull rod, which is hinged to the upper part of the central synchronous diverting link, moves to the right and drives the hinged first clamp shaft to rotate clockwise. At the same time, the second push-pull rod, which is hinged to the lower end of the central synchronous diverting link, moves to the left and drives the hinged second clamp shaft to rotate counterclockwise. At this time, the first shaft synchronously drives the two sets of four first clamps fixed on it to rotate clockwise and open. The second shaft synchronously drives the two sets of four second clamps fixed on it to rotate clockwise and open, thus simultaneously releasing the limiting fixation of the product part in the Y direction.Downward clamping self-locking mode: The operator rotates the wrench located outside the wrench hinge seat around the vertical axis of the wrench hinge seat until the inside of the wrench hinge seat is parallel to the wrench hinge seat. The first transition hinge connected to the wrench drives the hinge seat transmission link to translate to the left side of the wrench hinge seat. The second transition hinge drives the upper end of the central synchronous flow divider link to rotate to the left about the pivot in the middle of the central synchronous flow divider link. The first push-pull rod hinged to the upper part of the central synchronous flow divider link moves to the left, causing the hinged first clamp shaft to rotate counterclockwise. The second push-pull rod hinged to the lower end of the central synchronous flow divider link moves to the right, causing the hinged... The second clamp shaft rotates clockwise, and the first shaft simultaneously drives the two sets of four first clamps fixed to it to rotate counterclockwise and clamp. The second shaft simultaneously drives the two sets of four second clamps fixed to it to rotate clockwise and clamp, thus limiting and fixing the product in the Y direction. When the wrench is pressed close to the wrench hinge seat, the line connecting the hinge seat transmission rod, the first transition hinge, and the wrench crosses the dead point of the mechanism, forming a mechanical self-lock. At this time, the workpiece's rebound force cannot push the connecting rod back open. Even if the clamping and flipping mechanism vibrates during transport, the clamps will not loosen, greatly improving safety.

[0012] The wrench hinge base includes two L-shaped support arms and a vertical base. The vertical arms of the two L-shaped support arms are symmetrically fixed to the outer wall of the vertical base. The horizontal arms of the two L-shaped support arms are fixed to the upper end face of the left frame wall of the rectangular frame. A horizontal sleeve is provided on the left side of the inner wall of the vertical base. The middle part of the hinge base transmission link is slidably sleeved in the horizontal sleeve. The horizontal sleeve can constrain the movement direction of the hinge base transmission link. A hinge base protrudes from the right side of the inner wall of the vertical base. The wrench as a whole has an inverted Z-shaped structure. The right end of one horizontal arm of the wrench is rotatably connected to the hinge base through a vertical shaft. The other end of the first transition hinge is hinged to the left end of one horizontal arm of the wrench. The other horizontal arm of the wrench is the free end for wrench operation.

[0013] A Y-axis length transmission link adjusting rod is provided between the hinge seat transmission link and the second transition hinge. The left end of the Y-axis length transmission link adjusting rod is hinged to the other end of the second transition hinge, and the right end of the Y-axis length transmission link adjusting rod has a blind hole with internal threads. One end of the hinge seat transmission link is threaded into the blind hole with internal threads of the Y-axis length transmission link adjusting rod. A Y-axis length first push-pull rod adjusting rod is provided between the first push-pull rod and the first clamp shaft. The right end of the first push-pull rod adjusting rod is hinged to the first clamp shaft, and the left end face of the first push-pull rod adjusting rod has a groove with internal threads. The other end of the first push-pull rod is threaded into the groove with internal threads of the first push-pull rod adjusting rod. A Y-axis length second push-pull rod adjusting rod is provided between the second push-pull rod and the second clamp shaft. The left end of the second push-pull rod adjusting rod is hinged to the second clamp shaft. The Y-axis length second push-pull rod adjusting rod is adjusted... The right end face of the rod is provided with a groove with internal threads. The other end of the second push-pull rod is threaded into the groove with internal threads of the Y-axis length second push-pull rod adjusting rod. The function of the Y-axis length transmission linkage adjusting rod, the Y-axis length first push-pull rod adjusting rod, and the Y-axis length second push-pull rod adjusting rod is to adjust the translation distance of the push-pull rod by adjusting the depth of the threaded connection, thereby changing the opening and closing stroke of the clamp. One set of mechanisms can adapt to a variety of product parts with different thicknesses and sizes, compensating for the manufacturing tolerances of sheet metal parts. Each first clamp and the first rotating shaft are fitted with a shrinking sleeve, and each second clamp and the second rotating shaft are fitted with a shrinking sleeve. The inner hole at the lower end of the clamp is held tightly on the rotating shaft by the shrinking sleeve. The shrinking sleeve has an interference fit, zero clearance, uniform tightness around the circumference, impact resistance, no slippage, automatic centering, good centering, and can be operated with an ordinary Allen wrench. It is a keyless connection. After locking, the clamp can only rotate around the rotating shaft as the center, does not slip under force, and is easy to disassemble and assemble.

[0014] A loading vehicle includes a body-in-white structural component clamping and tilting mechanism for welding operations, a loading vehicle handle and two pairs of casters. The loading vehicle handle is fixed to the outer side wall of a vertical support frame on one side, and the loading vehicle handle facilitates pushing the loading vehicle for transportation. The two pairs of casters are respectively fixed at the four corners of the lower end face of the rectangular main frame, forming the loading vehicle. One pair of casters on one side of the main frame is a swivel caster, and the other pair of casters on the other side of the main frame is a fixed caster.

[0015] Beneficial effects The beneficial effects of this invention are: 1. Enables multi-angle adjustment of product parts to meet the needs of multiple operation processes. For manual inspection / breaking: Product parts can be flipped to the optimal viewing angle (e.g., tilted at 45°), allowing operators to conduct a comprehensive inspection without bending over, increasing inspection efficiency by approximately 40% and eliminating blind spots. For stud welding: Product parts can be flipped to the angle most easily accessible to the welding gun, improving welding pass rate and making operation more convenient. For loading and unloading: Product parts can be flipped to an inclined position, making room for the lifting equipment, avoiding interference with the lifting equipment's stroke, and reducing loading and unloading time by approximately 50%. 2. Achieve multi-purpose functionality and significantly reduce production costs: By setting multiple positioning modules on the front, one cart can be compatible with two different models of product parts (without changing any parts); the coplanar steel plate on the back can be used as a simple support surface, further expanding the cart's application scenarios; production line tooling investment costs are reduced by approximately 30%-40%. 3. Achieve synchronous clamping on both sides with a single handle: Through the linkage mechanism, the operator only needs to operate one handle to achieve synchronous centering and clamping of the left and right clamps. The workpiece is automatically centered and positioned, and the clamping force is uniform and consistent, which completely solves the problems of cumbersome operation and difficult centering in traditional multi-point clamping. 4. The auxiliary handle mechanism has a dead-point self-locking function: Through the hinge four-bar transmission + dead-point self-locking design, when the handle is pressed down to the clamping position, the linkage mechanism automatically locks over the dead point. Even if the trolley vibrates during transportation, it will not loosen, which greatly improves safety. 5. The tension sleeve connection structure offers significant advantages: Easy assembly and disassembly: No keys or heating required; ordinary tools can be used to install and remove the clamps, resulting in high maintenance efficiency; Impact-resistant and non-slip: The interference fit connection prevents relative slippage even under clamping impact loads, ensuring clamping accuracy and stability; Excellent centering: The keyless connection avoids the eccentricity problem caused by keyways, ensuring the clamp's rotation center is highly aligned with the vertical shaft axis; Zero-backlash transmission: Eliminating the fit clearance present in traditional keyed connections results in faster and more precise clamping response. 6. Adjustable clamping force and good compatibility: The clamp opening and closing stroke can be quickly adjusted by adjusting the thread of the pull rod length. One set of mechanisms can be compatible with multiple products of similar specifications and compensate for the dimensional and thickness tolerances of sheet metal parts. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the overall structure of the invention. Figure 2 .

[0018] Figure 3 This is a top view schematic diagram of the overall structure of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the flipping support mechanism and the flipping drive positioning mechanism of the present invention.

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the flip-drive positioning mechanism of the present invention. Figure 1 .

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the flip-drive positioning mechanism of the present invention. Figure 2 .

[0022] Figure 7 This is a three-dimensional structural diagram of the product component support bracket and the product component connecting rod clamping mechanism of the present invention.

[0023] Figure 8 This is a schematic diagram of the partial clamping and self-locking working condition of the connecting rod clamping mechanism of the present invention.

[0024] Figure 9 This is a schematic diagram of the partially opened working condition of the connecting rod clamping mechanism of the product component of the present invention.

[0025] Figure 10 This is a three-dimensional structural diagram of the connecting rod clamping mechanism of the product component of this invention.

[0026] In the picture: 1. Tilting support mechanism; 1.1. Main frame; 1.2. Upper end support steel plate; 1.3. Vertical support frame; 1.4. Bearing seat; 1.5. Support crossbar; 1.6. Tilting drive positioning mechanism fixed support seat; 1.7. Positioning pin sleeve support plate; 2. Tilting drive positioning mechanism; 2.1. Right angle gear reducer; 2.2. Operating handwheel; 2.3. Steering positioning disc; 2.3.1. Circular steel plate; 2.3.2. Weight reduction hole; 2.3.3. Pin hole; 2.4. Positioning pin; 3. Product component support bracket; 3.1 Rectangular frame; 3.2 Supporting longitudinal beam; 3.3 First load-bearing steel plate; 3.4 Guide block; 3.5 Positioning pin; 3.6 Vertical connecting piece; 3.7 Horizontal rotating shaft; 3.8 Second load-bearing steel plate; 4. Product component linkage clamping mechanism; 4.1 Wrench hinge seat; 4.1.1 L-shaped support arm; 4.1.2 Vertical base; 4.1.3 Horizontal sleeve; 4.1.4 Hinge seat; 4.2 Wrench; 4.3 First transition hinge; 4.4 Hinge seat transmission link; 4.5 Second transition hinge; 4.6 Central synchronous splitter link; 4.6.1 Pivot; 4.7 First push-pull mechanism 4.8. Second push-pull rod; 4.11. First clamp pivot; 4.12. Second clamp pivot; 4.13. First clamp; 4.14. Second clamp; 4.15. First pivot; 4.16. Second pivot; 4.17. Y-axis length transmission linkage adjusting rod; 4.18. Y-axis length first push-pull rod adjusting rod; 4.19. Y-axis length second push-pull rod adjusting rod; 4.20. Expansion sleeve; 5. Loading vehicle handle; 6. Casters. Detailed Implementation

[0027] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0028] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0030] Example 1 See Figures 1-10As shown, the body-in-white structural component clamping and flipping mechanism that can be used for welding operations includes a flipping support mechanism 1, a flipping drive positioning mechanism 2, a product component bearing bracket 3, and a product component linkage clamping mechanism 4. The flipping support mechanism 1 is mounted on the ground; The flipping drive positioning mechanism 2 is fixed to one side of the flipping support mechanism 1, which is perpendicular to the upper part of the wall. The product component support bracket 3 is pivotally connected to the upper end of the left and right vertical walls of the flipping support mechanism 1, and one side end of the product component support bracket 3 is connected to the rotation output end of the flipping drive positioning mechanism 2 through the pivot. The flipping drive positioning mechanism 2 can drive the product component support bracket 3 to rotate 360 ​​degrees along the pivot and be fixed at a set angle in the rotation circumference. The product component linkage clamping mechanism 4 is mounted on the product component support bracket 3. The product component linkage clamping mechanism 4 and the product component support bracket 3 cooperate to fix the product component in the XYZ three-way limit and fixation between the product component linkage clamping mechanism 4 and the product component support bracket 3.

[0031] The flipping support mechanism 1 includes a rectangular main frame 1.1, which is welded from 60×60×3mm square steel pipes. Each corner of the upper surface of the main frame 1.1 is provided with an upper surface support steel plate 1.2. A trapezoidal vertical support frame 1.3 is fixedly connected to the upper surface support steel plates 1.2 on both the left and right sides of the upper surface of the main frame 1.1. A bearing seat 1.4 is fixedly connected to the upper surface of each vertical support frame 1.3, and the two bearing seats 1.4 are coaxially arranged. A support crossbar 1.5 is provided in the middle of the inner sidewalls of the two sides of the trapezoidal structure of each vertical support frame 1.3. A flipping drive positioning mechanism fixing support seat 1.6 is fixedly connected to the upper outer sidewall of one side of the vertical support frame 1.3. The flipping drive positioning mechanism 2 is fixed to the flipping drive positioning mechanism fixing support seat 1.6. A positioning pin is vertically provided at the front right side of the upper surface of the flipping drive positioning mechanism fixing support seat 1.6 to connect to a support piece 1.7.

[0032] The flip-drive positioning mechanism 2 includes a right-angle gear reducer 2.1, an operating handwheel 2.2, a steering positioning disc 2.3, and a positioning pin 2.4. The right-angle gear reducer 2.1 is mounted and fixed on the upper surface of the fixed support base 1.6 of the flip-drive positioning mechanism. The input shaft of the right-angle gear reducer 2.1 is rotatably connected to the operating handwheel 2.2, and the output shaft of the right-angle gear reducer 2.1 is rotatably sleeved on the corresponding bearing seat 1.4. The free end of the output shaft of the right-angle gear reducer 2.1 passes through the corresponding bearing seat 1.4 and is fixedly connected to the center of the steering positioning disc 2.3. A positioning pin 2.4 is provided above the input shaft of the right-angle gear reducer 2.1. The positioning pin 2.4 is slidably connected to the upper surface of the fixed support base 1.6 of the flip-drive positioning mechanism, and the front end of the positioning pin 2.4 can slide through the positioning pin sleeve and be inserted and fixed on the steering positioning disc 2.3.

[0033] The steering positioning plate 2.3 is a circular steel plate 2.3.1 with four weight-reducing holes 2.3.2 evenly distributed around its outer edge. Sixteen pin holes 2.3.3 are evenly distributed around the outer edge of the circular steel plate 2.3.1, with an included angle of 22.5° between adjacent pin holes 2.3.3. The diameter of each pin hole 2.3.3 is 31mm. The front end of the positioning pin 2.4 can be inserted and fixed into the pin hole 2.3.3. The corresponding side end of the product component support bracket 3 is fixed to one end face of the circular steel plate 2.3.1. By cranking the operating handwheel 2.2, the right-angle gear reducer 2.1 drives the steering positioning plate 2.3 to rotate. The product component support bracket 3 rotates synchronously with the steering positioning plate 2.3. When the product component support bracket 3 rotates to the required tilt angle, the positioning pin 2.4 is inserted into the corresponding pin hole 2.3.3 of the steering positioning plate 2.3, maintaining the tilt angle of the product component support bracket 3 in a fixed state.

[0034] The product component support bracket 3 includes a rectangular frame 3.1, welded from 80×40mm square steel pipes. The outer wall of the left end of the rectangular frame 3.1 is aligned and fixed to the middle of the right side of the circular steel plate 2.3.1. Three supporting longitudinal beams 3.2 are welded along the length of the rectangular frame 3.1. Three first bearing steel plates 3.3 are evenly arranged along the length of the upper end face of each supporting longitudinal beam 3.2. Guide blocks 3.4 are detachably fixed to the first bearing steel plates 3.3 at both the upper and lower ends of each supporting longitudinal beam 3.2. The upper and lower ends of the left side... A positioning pin 3.5 can also be detachably fixed on the first bearing steel plate 3.3. A vertical connecting piece 3.6 and a horizontal rotating shaft 3.7 are provided at the bearing seat 1.4 position on the upper end face of the right vertical support frame 1.3, on the outer wall of the right end frame wall of the rectangular frame 3.1. The vertical connecting piece 3.6 is welded and fixed to the middle of the outer wall of the right end frame wall of the rectangular frame 3.1. The left end of the horizontal rotating shaft 3.7 is welded and fixed to the right side face of the vertical connecting piece 3.6, and the horizontal rotating shaft 3.7 is rotatably connected to the bearing seat 1.4 on the upper end face of the right vertical support frame 1.3.

[0035] Each of the supporting longitudinal beams 3.2 of the product component bearing bracket 3 has a second bearing steel plate 3.8 on its lower end face corresponding to the position of the first bearing steel plate 3.3, and all the second bearing steel plates 3.8 are located on the same horizontal plane.

[0036] The product component linkage clamping mechanism 4 includes a wrench hinge seat 4.1, a wrench 4.2, a first transition hinge 4.3, a hinge seat transmission link 4.4, a second transition hinge 4.5, a central synchronous diverting link 4.6, a first push-pull rod 4.7, a second push-pull rod 4.8, a first clamp pivot 4.11, a second clamp pivot 4.12, four first clamps 4.13, four second clamps 4.14, a first pivot 4.15, and a second pivot 4.16. The pivot 4.6.1 in the middle of the central synchronous diverting link 4.6 is rotatably connected to the lower end face of the left frame wall of the rectangular frame 3.1. One end of the first push-pull rod 4.7 is hinged to the upper part of the central synchronous diverting link 4.6, and the other end of the first push-pull rod 4.7 is hinged to the first clamp pivot 4.11. A clamp shaft 4.11 is fixed to the left side of the first shaft 4.15. Four first clamps 4.13 are arranged in pairs, corresponding to the first bearing steel plate 3.3 at the lower end of the support longitudinal beam 3.2 on the left and right sides, respectively, and are fixed to the first shaft 4.15. The upper end of the central synchronous flow-dividing connecting rod 4.6 is hinged to one end of the second transition hinge 4.5, and the other end of the second transition hinge 4.5 is hinged to one end of the hinge seat transmission connecting rod 4.4. The hinge seat transmission connecting rod 4.4 is slidably sleeved on the left side of the wrench hinge seat 4.1. One end of the first transition hinge 4.3 is rotatably connected to the other end of the hinge seat transmission connecting rod 4.4. The wrench 4.2 is rotatably connected to the wrench hinge seat 4.1 via a vertical shaft, and the other end of the first transition hinge 4.3 is hinged to the wrench 4.2 near the vertical shaft. At the shaft position, the wrench hinge seat 4.1 is fixed to the upper end of the left frame wall of the rectangular frame 3.1; the lower end of the central synchronous diverting connecting rod 4.6 is hinged to one end of the second push-pull rod 4.8, and the other end of the second push-pull rod 4.8 is hinged to the second clamp rotating shaft 4.12. The second clamp rotating shaft 4.12 is sleeved and fixed to the left side of the second rotating shaft 4.16. The four second clamps 4.14 are arranged in pairs, corresponding to the first bearing steel plate 3.3 at the upper end of the support longitudinal beam 3.2 on the left and right sides, respectively, and are fixed to the second rotating shaft 4.16. The two ends of the first rotating shaft 4.15 and the two ends of the second rotating shaft 4.16 are respectively rotatably connected to the upper and lower ends of the left and right side frame walls of the rectangular frame 3.1; in the open working condition: the operator rotates the wrench 4.2 horizontally to the outside of the wrench hinge seat 4.1. 2. Rotate the lever 4.2 around the vertical axis of the wrench hinge seat 4.1 to outside the wrench hinge seat 4.1, with the wrench 4.2 and the wrench hinge seat 4.1 in the same plane. The first transition hinge 4.3, which is hinged to the wrench 4.2, drives the hinge seat transmission link 4.4 to translate to the right side of the wrench hinge seat 4.1. The second transition hinge 4.5 drives the upper end of the central synchronous flow divider link 4.6 to rotate to the right about the pivot 4.6.1 in the middle of the central synchronous flow divider link 4.6. The first push-pull rod 4.7, which is hinged to the upper part of the central synchronous flow divider link 4.6, translates to the right, driving the hinged first clamp shaft 4.11 to rotate clockwise. At the same time, the second push-pull rod 4.8, which is hinged to the lower end of the central synchronous flow divider link 4.6, translates to the left, driving the hinged second clamp shaft 4.11.12. Rotate counterclockwise. At this time, the first rotating shaft 4.15 synchronously drives the two sets of four first clamps 4.13 fixed on it to rotate clockwise and open. The second rotating shaft 4.16 synchronously drives the two sets of four second clamps 4.14 fixed on it to rotate clockwise and open, forming a single-input double-output swing arm, which simultaneously releases the Y-axis limit fixation of the product part; Down-clamping self-locking condition: The operator rotates the wrench 4.2, located outside the wrench hinge seat 4.1, around the vertical axis of the wrench hinge seat 4.1 until the inside of the wrench hinge seat 4.1 is parallel to the wrench hinge seat 4.1. The first rotating shaft 4.15, which is hinged to the wrench 4.2, rotates clockwise and opens. The hinge 4.3 drives the hinge seat transmission link 4.4 to translate to the left side of the wrench hinge seat 4.1. The second transition hinge 4.5 drives the upper end of the central synchronous flow divider link 4.6 to rotate to the left about the pivot 4.6.1 in the middle of the central synchronous flow divider link 4.6. The first push-pull rod 4.7, hinged to the upper part of the central synchronous flow divider link 4.6, moves to the left, causing the first clamp shaft 4.11 of the hinge to rotate counterclockwise. The second push-pull rod 4.8, hinged to the lower end of the central synchronous flow divider link 4.6, moves to the right, causing the second clamp shaft 4.12 of the hinge to rotate clockwise. The first shaft 4.15 simultaneously drives the sleeve fixed to it. The two sets of four first clamps 4.13 on the upper part rotate counterclockwise to clamp, and the second rotating shaft 4.16 synchronously drives the two sets of four second clamps 4.14 fixed on it to rotate clockwise to clamp, limiting and fixing the product part in the Y direction; when the wrench 4.2 is pressed close to the wrench hinge seat 4.1, the line connecting the hinge points of the hinge seat transmission link 4.4, the first transition hinge 4.3, and the wrench 4.2 crosses the dead point of the mechanism, forming a mechanical self-lock. At this time, the rebound force of the workpiece cannot push the link open in the opposite direction. Even if the clamping and flipping mechanism vibrates during the transfer, the clamps will not loosen, greatly improving safety; wrench hinge seat 4 4.1. Wrench; 4.2. First adapter hinge; 4.3. Hinge seat transmission link; 4.4. Second adapter hinge; 4.5. Central synchronous diverter link; 4.6. First push-pull rod; 4.7. and second push-pull rod are the power input units connecting the operator and the clamping linkage mechanism. 4.11. First clamp shaft; 4.12. Second clamp shaft; 4.13. Four first clamps; 4.14. Four second clamps; 4.15. First shaft; and 4.16. Their core function is to convert the horizontal arc swing of the operator's hand into a horizontal linear push-pull motion, and to ensure the stability of the clamping state by utilizing the dead-point self-locking characteristic.

[0037] The wrench hinge base 4.1 includes two L-shaped support arms 4.1.1 and a vertical base 4.1.2. The vertical arms of the two L-shaped support arms 4.1.1 are symmetrically fixed to the outer side wall of the vertical base 4.1.2. The horizontal arms of the two L-shaped support arms 4.1.1 are fixed to the upper end face of the left side frame wall of the rectangular frame 3.1. A horizontal sleeve 4.1.3 is provided on the left side of the inner side wall of the vertical base 4.1.2. The middle part of the hinge base transmission connecting rod 4.4 is slidably sleeved in the horizontal sleeve 4.1.3. A hinge base 4.1.4 protrudes from the right side of the inner side wall of the vertical base 4.1.2. The wrench 4.2 has an overall inverted Z-shaped structure. The right end of one horizontal arm of the wrench 4.2 is rotatably connected to the hinge base 4.1.4 through a vertical shaft. The other end of the first transition hinge 4.3 is hinged to the left end of one horizontal arm of the wrench 4.2. The other horizontal arm of the wrench 4.2 is the free end for wrenching.

[0038] A Y-axis length transmission link adjusting rod 4.17 is provided between the hinge seat transmission link 4.4 and the second transition hinge 4.5. The left end of the Y-axis length transmission link adjusting rod 4.17 is hinged to the other end of the second transition hinge 4.5, and the right end of the Y-axis length transmission link adjusting rod 4.17 is provided with a blind hole with internal threads. One end of the hinge seat transmission link 4.4 is threaded into the blind hole with internal threads of the Y-axis length transmission link adjusting rod 4.17. A Y-axis length first push-pull rod adjusting rod 4.18 is provided between the first push-pull rod 4.7 and the first clamp shaft 4.11. The right end of the Y-axis length first push-pull rod adjusting rod 4.18 is hinged to the first clamp shaft 4.11, and the left end face of the Y-axis length first push-pull rod adjusting rod 4.18 is provided with a groove with internal threads. The other end of the first push-pull rod 4.7 is threaded into the groove with internal threads of the Y-direction length first push-pull rod adjusting rod 4.18; a Y-direction length second push-pull rod adjusting rod 4.19 is provided between the second push-pull rod 4.8 and the second clamp shaft 4.12. The left end of the Y-direction length second push-pull rod adjusting rod 4.19 is hinged to the second clamp shaft 4.12, and the right end face of the Y-direction length second push-pull rod adjusting rod 4.19 is provided with a groove with internal threads. The other end of the second push-pull rod 4.8 is threaded into the groove with internal threads of the Y-direction length second push-pull rod adjusting rod 4.19; a tightening sleeve 4.20 is sleeved between each first clamp 4.13 and the first shaft 4.15, and between each second clamp 4.14 and the second shaft 4.16.

[0039] Example 2 See Figures 1-4As shown, a loading vehicle includes a body-in-white structural component clamping and tilting mechanism for welding operations, a loading vehicle handle 5, and two pairs of casters 6. The loading vehicle handle 5 is fixed to the outer wall of a vertical support frame 1.3 on one side. The loading vehicle handle 5 is made of a steel pipe with a diameter of 33mm. The two pairs of casters 6 are respectively fixed at the four corners of the lower end face of the rectangular main frame 1.1, forming the loading vehicle. One pair of casters 6 on one side of the main frame 1.1 are swivel casters, and the other pair of casters 6 on the other side of the main frame 1.1 are fixed casters. The diameter of each caster 6 is 200mm at the end. The large diameter of the 200mm casters ensures passability on the weld slag ground.

[0040] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art will understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A clamping and flipping mechanism for body-in-white structural components that can be used in welding operations, characterized in that: It includes a flipping support mechanism (1), a flipping drive positioning mechanism (2), a product component bearing bracket (3), and a product component linkage clamping mechanism (4). The flipping support mechanism (1) is mounted on the ground; The flipping drive positioning mechanism (2) is fixed to one side of the flipping support mechanism (1) and hangs vertically on the upper part of the wall. The product component support bracket (3) is pivotally connected to the upper end of the left and right vertical walls of the flip support mechanism (1), and one side end of the product component support bracket (3) is connected to the rotation output end of the flip drive positioning mechanism (2) through the pivot. The flip drive positioning mechanism (2) can drive the product component support bracket (3) to rotate 360 ​​degrees along the pivot and be fixed at a set angle in the rotation circumference. The product component linkage clamping mechanism (4) is set on the product component bearing bracket (3). The product component linkage clamping mechanism (4) and the product component bearing bracket (3) cooperate to fix the product component between the product component linkage clamping mechanism (4) and the product component bearing bracket (3) in the XYZ three-way limit.

2. The body-in-white structural component clamping and flipping mechanism for welding operations according to claim 1, characterized in that: The flipping support mechanism (1) includes a rectangular main frame (1.1); each corner of the upper end face of the main frame (1.1) is provided with an upper end face support steel plate (1.2), and a trapezoidal vertical support frame (1.3) is fixedly connected to the upper end face support steel plates (1.2) on the left and right sides of the upper end face of the main frame (1.1); a bearing seat (1.4) is fixedly connected to the upper end face of each vertical support frame (1.3), and the two bearing seats (1.4) on the left and right are coaxially arranged; a support crossbar (1.5) is provided in the middle of the inner side wall of the trapezoidal structure of each vertical support frame (1.3); a flipping drive positioning mechanism fixed support seat (1.6) is fixedly connected to the upper outer side wall of one side of the vertical support frame (1.3), and the flipping drive positioning mechanism (2) is fixed on the flipping drive positioning mechanism fixed support seat (1.6), and a positioning pin sleeve support plate (1.7) is provided vertically at the front end of the right side of the upper end face of the flipping drive positioning mechanism fixed support seat (1.6).

3. The body-in-white structural component clamping and flipping mechanism for welding operations according to claim 2, characterized in that: The flip-drive positioning mechanism (2) includes a right-angle gear reducer (2.1), an operating handwheel (2.2), a steering positioning disc (2.3), and a positioning pin (2.4). The right-angle gear reducer (2.1) is mounted on the upper end face of the fixed support base (1.6) of the flip-drive positioning mechanism. The input shaft of the right-angle gear reducer (2.1) is rotatably connected to the operating handwheel (2.2), and the output shaft of the right-angle gear reducer (2.1) is rotatably sleeved on the corresponding bearing seat (1.4). The free end of the output shaft of the right angle gear reducer (2.1) passes through the corresponding bearing seat (1.4) and is fixedly connected to the center of the steering positioning disk (2.3). A positioning pin (2.4) is provided above the input shaft of the right angle gear reducer (2.1). The positioning pin (2.4) is slidably connected to the upper end face of the fixed support seat (1.6) of the flip drive positioning mechanism. The front end of the positioning pin (2.4) can slide through the positioning pin sleeve support plate (1.7) and be inserted and fixed on the steering positioning disk (2.3).

4. The body-in-white structural component clamping and flipping mechanism for welding operations according to claim 3, characterized in that: The steering positioning plate (2.3) is a circular steel plate (2.3.1) with several weight-reducing holes (2.3.2) evenly distributed around its outer edge. Several pin holes (2.3.3) are evenly distributed around the outer edge of the circular steel plate (2.3.1). The front end of the positioning pin (2.4) can be inserted and fixed in the pin hole (2.3.3). The corresponding side end of the product component bearing bracket (3) is fixed to one side end face of the circular steel plate (2.3.1).

5. The body-in-white structural component clamping and flipping mechanism for welding operations according to claim 4, characterized in that: The product component support bracket (3) includes a rectangular frame (3.1). The outer wall of the left end of the rectangular frame (3.1) is aligned and fixed to the middle of the right side of the circular steel plate (2.3.1). Three supporting longitudinal beams (3.2) are welded along the length of the rectangular frame (3.1). Three first bearing steel plates (3.3) are evenly arranged along the length of the upper end of each supporting longitudinal beam (3.2). Guide blocks (3.4) are detachably fixed on the first bearing steel plates (3.3) at both the upper and lower ends of each supporting longitudinal beam (3.2). The first bearing steel plates (3.3) at the upper and lower ends of the left side are also fixed. The upper part is also detachably fixed with a positioning pin (3.5). The outer wall of the right end frame of the rectangular frame (3.1) is aligned with the bearing seat (1.4) on the upper end of the right vertical support frame (1.3) with a vertical connecting piece (3.6) and a horizontal rotating shaft (3.7). The vertical connecting piece (3.6) is welded and fixed to the middle of the outer wall of the right end frame of the rectangular frame (3.1). The left end of the horizontal rotating shaft (3.7) is welded and fixed to the right side of the vertical connecting piece (3.6), and the horizontal rotating shaft (3.7) is rotatably connected to the bearing seat (1.4) on the upper end of the right vertical support frame (1.3).

6. The body-in-white structural component clamping and flipping mechanism for welding operations according to claim 5, characterized in that: Each of the supporting longitudinal beams (3.2) of the product component bearing bracket (3) has a second bearing steel plate (3.8) on its lower end face corresponding to the position of the first bearing steel plate (3.3), and all the second bearing steel plates (3.8) are located on the same horizontal plane.

7. The body-in-white structural component clamping and flipping mechanism for welding operations according to claim 6, characterized in that: The product component linkage clamping mechanism (4) includes a wrench hinge seat (4.1), a wrench (4.2), a first transition hinge (4.3), a hinge seat transmission link (4.4), a second transition hinge (4.5), a central synchronous diverting link (4.6), a first push-pull rod (4.7), a second push-pull rod (4.8), a first clamp pivot (4.11), a second clamp pivot (4.12), four first clamps (4.13), four second clamps (4.14), a first pivot (4.15), and a second pivot (4.16); and a pivot (4.16) in the middle of the central synchronous diverting link (4.6). 6.1) Rotatably connected to the lower end of the left frame wall of the rectangular frame (3.1), the upper part of the central synchronous diversion connecting rod (4.6) is hinged to one end of the first push-pull rod (4.7), and the other end of the first push-pull rod (4.7) is hinged to the first clamp rotating shaft (4.11). The first clamp rotating shaft (4.11) is sleeved and fixed to the left side of the first rotating shaft (4.15). The four first clamps (4.13) are arranged in two pairs, corresponding to the first bearing steel plate (3.3) at the lower end of the support longitudinal beam (3.2) on the left and right sides respectively, and are fixed on the first rotating shaft (4.15). The upper end of the central synchronous diversion connecting rod (4.6) is connected to the second rotating shaft. One end of hinge (4.5) is hinged, and the other end of the second transition hinge (4.5) is hinged to one end of the hinge seat transmission link (4.4). The hinge seat transmission link (4.4) is slidably sleeved on the left side of the wrench hinge seat (4.1). One end of the first transition hinge (4.3) is rotatably connected to the other end of the hinge seat transmission link (4.4). The wrench (4.2) is rotatably connected to the wrench hinge seat (4.1) via a vertical axis. The other end of the first transition hinge (4.3) is hinged to the wrench (4.2) near the vertical axis. The wrench hinge seat (4.1) is fixed to the upper end face of the left frame wall of the rectangular frame (3.1); the center is the same as The lower end of the step diversion connecting rod (4.6) is hinged to one end of the second push-pull rod (4.8), and the other end of the second push-pull rod (4.8) is hinged to the second clamp shaft (4.12). The second clamp shaft (4.12) is sleeved and fixed on the left side of the second shaft (4.16). The four second clamps (4.14) are arranged in two pairs, corresponding to the first bearing steel plate (3.3) on the upper end of the support longitudinal beam (3.2) on the left and right sides, respectively, and are fixed on the second shaft (4.16). The two ends of the first shaft (4.15) and the two ends of the second shaft (4.16) are rotatably connected to the upper and lower ends of the left and right side frame walls of the rectangular frame (3.1).

8. The body-in-white structural component clamping and flipping mechanism for welding operations according to claim 7, characterized in that: The wrench hinge seat (4.1) includes two L-shaped support arms (4.1.1) and a vertical base (4.1.2). The vertical arms of the two L-shaped support arms (4.1.1) are symmetrically fixed to the outer side wall of the vertical base (4.1.2). The horizontal arms of the two L-shaped support arms (4.1.1) are fixed to the upper end face of the left side frame wall of the rectangular frame (3.1). A horizontal sleeve (4.1.3) is provided on the left side of the inner side wall of the vertical base (4.1.2). The middle part of the hinge seat transmission connecting rod (4.4) is slidably sleeved in the horizontal sleeve (4.1.3). A hinge seat protrudes from the right side of the inner side wall of the vertical base (4.1.2). 4.1.4), the wrench (4.2) has an overall inverted Z-shaped structure. The right end of one horizontal arm of the wrench (4.2) is rotatably connected to the hinge seat (4.1.4) via a vertical shaft. The other end of the first transition hinge (4.3) is hinged to the left end of one horizontal arm of the wrench (4.2). The other horizontal arm of the wrench (4.2) is the free end for wrenching.

9. The body-in-white structural component clamping and flipping mechanism for welding operations according to claim 8, characterized in that: A Y-axis length transmission link adjusting rod (4.17) is provided between the hinge seat transmission link (4.4) and the second transition hinge (4.5). The left end of the Y-axis length transmission link adjusting rod (4.17) is hinged to the other end of the second transition hinge (4.5). The right end of the Y-axis length transmission link adjusting rod (4.17) is provided with a blind hole with internal threads. One end of the hinge seat transmission link (4.4) is threaded into the blind hole with internal threads of the Y-axis length transmission link adjusting rod (4.17). A Y-axis length first push-pull rod adjusting rod (4.18) is provided between the first push-pull rod (4.7) and the first clamp shaft (4.11). The right end of the Y-axis length first push-pull rod adjusting rod (4.18) is hinged to the first clamp shaft (4.11). The left end face of the Y-axis length first push-pull rod adjusting rod (4.18) is provided with a groove with internal threads. The other end of the first push-pull rod (4.7) is threaded into the groove with internal thread of the Y-direction length first push-pull rod adjusting rod (4.18); a Y-direction length second push-pull rod adjusting rod (4.19) is provided between the second push-pull rod (4.8) and the second clamp shaft (4.12). The left end of the Y-direction length second push-pull rod adjusting rod (4.19) is hinged to the second clamp shaft (4.12), and the right end face of the Y-direction length second push-pull rod adjusting rod (4.19) is provided with a groove with internal thread. The other end of the second push-pull rod (4.8) is threaded into the groove with internal thread of the Y-direction length second push-pull rod adjusting rod (4.19); a tightening sleeve (4.20) is sleeved between each first clamp (4.13) and the first shaft (4.15) and between each second clamp (4.14) and the second shaft (4.16).

10. A loading vehicle, characterized in that: The white body structural component clamping and flipping mechanism, which can be used for welding operations as described in any one of claims 1-9, also includes a loading vehicle handle (5) and two pairs of casters (6). The loading vehicle handle (5) is fixed to the outer wall of the vertical support frame (1.3) on one side, and the two pairs of casters (6) are respectively fixed at the four corners of the lower end face of the rectangular main frame (1.1) to form a loading vehicle. One pair of casters on one side of the main frame (1.1) is a universal wheel, and the other pair of casters on the other side of the main frame (1.1) is a fixed wheel.

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