A lift platform for a lift chair and a processing device thereof

Abstract

The application discloses a lift platform of a lift car and a processing equipment thereof and belongs to the field of lift car production. The lift platform comprises a frame, a supporting rod and a lift platform, the frame is hinged with the supporting rod and a first telescopic device, the supporting rod is hinged with one end of the platform, the other end of the platform is hinged with a second telescopic device, and the frame, the supporting rod and the lift platform are distributed in a Z shape, the horizontal lifting or tilting of the platform is realized by controlling the telescopic devices; the processing equipment comprises a welding platform and a robot, the welding platform is provided with a reversible clamping platform used for clamping the longitudinal beams and the cross beams of the lift platform. The application realizes the tilting and the flat lifting by the lift platform, effectively improves the flexibility of the adjustment of the lift platform, the clamping platform is driven to turn over by the turning over assembly, the turning over angle of the clamping platform can be adjusted flexibly according to the welding positions of the connecting parts of the longitudinal beams and the cross beams, the all-round welding of the welding positions is realized, and the flexibility and the adaptability of the welding are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of car carrier manufacturing, and in particular to a car carrier lifting platform and its processing equipment. Background Technology

[0002] A car carrier is a specialized logistics vehicle used to transport cars. It typically features a lifting platform for loading, allowing for multi-level loading by adjusting the platform's height and orientation to maximize the use of transport space. Most existing car carrier lifting platforms employ either hydraulic cylinders for direct lifting or wire rope lifting, enabling overall horizontal lifting of the platform.

[0003] However, the existing car carrier lifting platforms still have the following drawbacks: the platform's movement mode is relatively simple, and it can usually only maintain a horizontal posture for overall lifting. In actual loading and unloading operations, especially when it is necessary to guide vehicles from the ground to the upper platform, a platform with only horizontal lifting function cannot form a transition slope for vehicles to climb smoothly. It is necessary to configure an additional movable ladder, which is cumbersome to operate and has low loading and unloading efficiency.

[0004] Meanwhile, some existing structures that can tilt often require multiple independent hydraulic or linkage systems to achieve translational and tilting movements, resulting in complex structures and difficulty in synchronizing control.

[0005] Furthermore, existing lifting platforms are typically frame structures with numerous welding points located on multiple planes. Once components are clamped, the existing welding platforms cannot be flexibly adjusted and remain in a single clamping position. This means that the lifting platform cannot complete welding of all welding points in a single clamping operation, such as those located on the back and sides of the lifting platform, resulting in welding dead zones. Multiple clamping operations severely impact overall processing efficiency, leading to poor flexibility and adaptability of existing welding equipment. Summary of the Invention

[0006] This invention provides a car carrier lifting platform and its processing equipment. By controlling the telescopic device, the lifting platform can be raised or lowered horizontally or tilted and flipped. By clamping the platform and flipping it, all-round welding of the welding position can be achieved. This can solve the problems of complex structure and difficulty in synchronous control of existing lifting platforms, as well as the welding dead angles in welding processing equipment, which result in poor overall flexibility and adaptability of existing welding processing equipment.

[0007] The technical problem to be solved by this invention can be achieved through the following technical solution: A car carrier lifting platform includes: a frame and a lifting platform. Support rods and a first telescopic device are hinged to both sides of the frame. The other end of each support rod is hinged to one end of the lifting platform, and the frame, support rods, and lifting platform are arranged in a Z-shape. The other end of the first telescopic device is hinged to the support rod. A second telescopic device is hinged to the other end of the lifting platform, and the other end of the second telescopic device is hinged to the support rod. This device is used to tilt the lifting platform to an inclined state when the first or second telescopic device extends or retracts, and to simultaneously raise and lower both ends of the lifting platform when the first or second telescopic device extends or retracts synchronously.

[0008] As a preferred embodiment of the present invention, the lifting platform has a frame structure, including a number of longitudinal beams and a number of transverse beams arranged longitudinally and transversely.

[0009] A processing device for a car carrier lifting platform, applied to the welding processing of the aforementioned car carrier lifting platform, includes: a welding platform and a welding robot; the welding platform includes a mounting frame and a clamping platform for clamping the longitudinal beams and transverse beams of the lifting platform; the mounting frame is connected to a flipping component, which drives the clamping platform to flip, and adjusts the flipping angle of the clamping platform according to the welding position of the connection part of the longitudinal beams and transverse beams, so as to realize the welding of the connection part of the longitudinal beams and transverse beams.

[0010] As a preferred embodiment of the present invention, the clamping platform includes a rectangular frame, the rectangular frame being provided with a longitudinal beam clamping assembly for clamping longitudinal beams and a transverse beam clamping assembly for clamping transverse beams; wherein, the longitudinal beam clamping assembly is used to clamp the longitudinal beams to the ends of the transverse beams and make the two fit tightly together; after the transverse beam clamping assembly clamps the transverse beams, a plurality of transverse beams are evenly distributed.

[0011] As a preferred embodiment of the present invention, the beam clamping assembly includes two clamping guide rods arranged side by side and a driving assembly. Both clamping guide rods are slidably connected to the rectangular frame and are fixedly connected to clamping plates. The clamping plates connected to the two clamping guide rods are arranged in pairs for driving the two clamping guide rods to move in opposite directions through the driving assembly. The pairs of clamping plates move towards each other and clamp the beam on both sides, thereby clamping and fixing the beam.

[0012] As a preferred embodiment of the present invention, the driving assembly includes two lead screws and a transmission rod rotatably connected to the rectangular frame; the two clamping guide rods are respectively fixedly connected to lead nuts that correspond to the two lead screws; one end of the transmission rod is fixedly connected to a crank handle, which synchronously drives the two lead screws to rotate through the transmission rod, and the two lead screws respectively drive the two clamping guide rods to move in opposite directions.

[0013] As a preferred embodiment of the present invention, the longitudinal beam clamping assembly includes a drive shaft rotatably connected to a rectangular frame and several rotating bushings. The drive shaft is connected to each of the rotating bushings in a transmission manner to drive the rotating bushings to rotate synchronously. The inner walls of the rotating bushings are provided with internal threads and are threadedly connected to screws. One end of each screw is fixedly connected to a pressing plate, which is used to drive the screws to move axially by rotating the rotating bushings. The pressing plate pushes the longitudinal beam toward the end of the crossbeam and presses the longitudinal beam against the end of the crossbeam.

[0014] As a preferred embodiment of the present invention, the flipping assembly includes a rotating shaft fixed to both ends of a rectangular frame. The rotating shaft is rotatably connected to a lifting beam and connected to a mounting frame through the lifting beam. By driving the rotating shaft to rotate, the rectangular frame can be flipped.

[0015] As a preferred embodiment of the present invention, the mounting frame is connected to a lifting assembly, which is connected to a lifting beam to drive the rectangular frame to move up and down; wherein, the lifting beam and the mounting frame are slidably connected, both of the rotating shafts are connected to one-way gears, and the mounting frame is fixedly connected to racks that mesh with the one-way gears one by one, and the two racks are symmetrically arranged relative to the rotation center of the rotating shafts, so that the rectangular frame can be flipped by the one-way gears rolling along the racks through the lifting and lowering of the rectangular frame, and the rectangular frame can only rotate in one direction.

[0016] As a preferred embodiment of the present invention, the rotating shaft has a flat shaft section, and the mounting bracket is fixedly connected with two limiting plates. The two limiting plates are symmetrically arranged relative to the flat shaft section. When the rectangular frame is in a low position, the one-way gear separates from the rack, and at this time the flat shaft section is inserted between the two limiting plates. The limiting plates limit the rotation of the rotating shaft, so that the rectangular frame maintains a horizontal posture.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, by hinged support rods between the vehicle frame and the lifting platform, with the three arranged in a Z-shape, allows the lifting platform to be flipped into an inclined state when extended and retracted individually by the first or second telescopic device, or when extended and retracted synchronously by the first or second telescopic device. This enables the lifting platform to be raised and lowered synchronously at both ends, thus achieving level lifting and level lowering, effectively improving the flexibility of the lifting platform adjustment.

[0018] 2. This invention drives the clamping platform to rotate via a rotating component on the mounting frame, thereby causing the lifting platform to be welded to rotate as well. The rotation angle of the clamping platform can be flexibly adjusted according to the welding position of the connection between the longitudinal beam and the transverse beam, making it easier for the welding robot to perform all-round welding on the connection between the longitudinal beam and the transverse beam, effectively improving the flexibility and adaptability of welding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a car carrier lifting platform provided by the present invention; Figure 2 for Figure 1 The front view; Figure 3 A schematic diagram of a lifting platform in an inclined position; Figure 4 for Figure 3 The front view; Figure 5 This is a schematic diagram of the lifting platform when it is lowered to its lowest position. Figure 6 for Figure 5 The front view; Figure 7 A structural schematic diagram of the processing equipment for a car carrier lifting platform; Figure 8 for Figure 7 The front view; Figure 9 for Figure 8 The left view; Figure 10 A structural schematic diagram of the rectangular frame and the lifting platform; Figure 11 An exploded view of the rectangular frame and the lifting platform; Figure 12 for Figure 10 Top view; Figure 13 This is a schematic diagram of the structure for clamping the guide rod; Figure 14 for Figure 11 Enlarged view of the structure of section A in the middle; Figure 15 This is a structural diagram of the mounting bracket; Figure 16 This is a schematic diagram of the structure when the clamping platform moves horizontally upwards; Figure 17 for Figure 16 The front view; Figure 18 A schematic diagram of the structure when the clamping platform is tilted vertically by water. Figure 19 for Figure 18 The front view; Figure 20 This is a schematic diagram of the structure during the descent and rotation of the clamping platform; Figure 21 for Figure 20 The front view; Figure 22 A schematic diagram of the structure when the clamping platform is lowered and flipped to a horizontal position; Figure 23 for Figure 22 The front view; Figure 24 This is a schematic diagram of the structure of the flat shaft section and the limiting plate. Explanation of reference numerals in the attached figures: 1-Frame, 2-Lifting platform, 3-Mounting frame, 4-Clamping platform, 5-Clamping guide rod, 6-Welding robot, 101-Support rod, 102-First telescopic device, 201-Second telescopic device, 301-Lifting beam, 302-Rack, 303-Limiting plate, 401-Rectangular frame, 402-Drive shaft, 403-Rotating bushing, 404-Screw, 405-Extrusion plate, 406-Rotating shaft, 407-One-way gear, 408-Flat shaft section, 501-Clamping plate, 502-Lead screw, 503-Transmission rod, 504-Handle. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] Example 1 In car carrier loading and unloading operations, the lifting platform needs to have two movement modes: one is synchronous horizontal lifting (translation) at both ends to adjust the height of the loading layer; the other is that one end of the platform is raised while the other end remains low, forming an inclined transition slope for vehicles to climb and load / unload.

[0022] However, most existing technology platforms can only achieve a single translation function. The few platforms that can tilt often require multiple independent hydraulic or linkage systems to achieve translation and tilting movements, resulting in complex structures, difficulty in synchronizing control, and high costs and failure rates.

[0023] like Figures 1 to 2 As shown, in order to solve the above problems, the present invention provides a car carrier lifting platform, including a frame 1 and a lifting platform 2. A support rod 101 and a first telescopic device 102 are hinged to both sides of the frame 1. The other end of the support rod 101 is hinged to one end of the lifting platform 2, and the frame 1, the support rod 101 and the lifting platform 2 are arranged in a Z-shape.

[0024] The other end of the first telescopic device 102 is hinged to the support rod 101. The other end of the lifting platform 2 is hinged to a second telescopic device 201, and the other end of the second telescopic device 201 is hinged to the support rod 101. It is used to tilt the lifting platform 2 to a tilted state when the first telescopic device 102 or the second telescopic device 201 extends or retracts. When the first telescopic device 102 or the second telescopic device 201 extends or retracts synchronously, the two ends of the lifting platform 2 rise and fall synchronously.

[0025] Its working principle is as follows: Translational motion mode (horizontal rise and fall): such as Figure 1 , Figure 2 and Figure 5 , Figure 6 As shown, when the platform needs to be raised or lowered horizontally, the control system instructs the first telescopic device 102 and the second telescopic device 201 on both sides to extend or retract synchronously.

[0026] At this time, the lifting platform 2 swings around the hinge point where it is hinged to the support rod 101, while the support rod 101 swings around the hinge point where it is hinged to the frame 1. The swing of the lifting platform 2 compensates for the tilt change caused by the swing of the support rod 101, so that the swing of the support rod 101 will drive the lifting platform 2 to move horizontally up and down, completing the translational lifting.

[0027] Tilt mode: such as Figure 3 and Figure 4 As shown, there are two operating methods when the platform needs to form an incline. Method 1: Only the second telescopic device 201 is retracted, while the first telescopic device 102 remains stationary. In this case, the end of the lifting platform 2 that is hinged to the second telescopic device 201 will descend, while the other end will remain at a constant height due to the locking of the first telescopic device 102, thereby causing the lifting platform 2 to tilt.

[0028] Method 2: By retracting only the first telescopic device 102 while keeping the second telescopic device 201 stationary, the tilting and flipping of the lifting platform 2 can also be achieved. By differentially controlling the two telescopic devices, the tilting posture of the lifting platform 2 can be flexibly switched.

[0029] It should be emphasized that the core improvement of this embodiment lies in the adoption of a Z-shaped linkage mechanism, coupled with two telescopic devices that can be controlled differentially or synchronously. This allows the lifting platform to flexibly switch between two functional modes, "horizontal translation" and "tilting," using a very simple linkage system, solving the problems of complex structure and single function in existing technologies, and greatly improving the efficiency and convenience of loading and unloading car carriers.

[0030] It should be noted that the lifting platform 2 is preferably a frame structure, which is welded together from several longitudinal beams and transverse beams arranged in a longitudinal and transverse manner, so as to reduce its own weight while ensuring load-bearing capacity. Specifically, it includes at least two longitudinal beams located on the outer side.

[0031] Example 2 The lifting platform 2 described in Example 1 is a frame structure welded together from two longitudinal beams and multiple transverse beams. In the welding production of this frame, the connection points of the longitudinal and transverse beams are located at multiple positions throughout the frame. If the welding platform is fixed, its overall flexibility and adaptability are poor, requiring the welding robot to perform complex multi-axis displacement movements to weld to the back and sides of the weld, and even encountering inaccessible blind spots. This not only places extremely high demands on the welding robot's degrees of freedom but also makes it difficult to guarantee welding efficiency and consistency.

[0032] To address the issue that the aforementioned welding platform cannot flexibly adapt to welding the lifting platform 2, this embodiment provides a processing device for a car carrier lifting platform, which is used for welding processing of the car carrier lifting platform in Embodiment 1.

[0033] like Figures 7 to 9 As shown, the specific components include a welding platform and a welding robot 6. The welding robot 6 can be a ground-rail welding robot, which is existing technology and will not be described in detail in this embodiment. The welding platform includes a mounting frame 3 and a clamping platform 4 for clamping the longitudinal beams and transverse beams of the lifting platform 2. The mounting frame 3 is connected to a flipping component, which drives the clamping platform 4 to flip. The flipping angle of the clamping platform 4 is adjusted according to the welding position of the connection between the longitudinal beams and transverse beams to achieve welding of the connection between the longitudinal beams and transverse beams.

[0034] Its working principle is as follows: The longitudinal and transverse beams that make up the lifting platform 2 are placed on the clamping platform 4 according to the design requirements, and are precisely positioned and fixed by the clamping components on the clamping platform 4. When the welding robot 6 needs to weld seams on different surfaces of a component, there is no need to move the welding robot 6 itself. It is only necessary to activate the flipping component to drive the entire clamping platform 4 and the workpiece fixed on it to flip together around the horizontal axis. In this way, the seams that were originally on the side and back can be flipped to the top, so that the welding robot 6 can always operate in the optimal vertical downward or flat welding posture.

[0035] It should be emphasized that the core improvement of this embodiment lies in the design of a flexible welding fixture with a flipping function specifically for welding frame-type lifting platforms. By flipping the workpiece rather than moving the robot, it ensures that all weld seams on the workpiece are presented to the welding robot at the optimal angle, perfectly solving the accessibility and posture optimization problems of multi-faceted welding of complex frame structures, and significantly improving welding quality and automation efficiency.

[0036] Example 3 Understandably, in the welding fixture of Example 2, the welding accuracy of the workpiece primarily depends on the clamping accuracy. The longitudinal and transverse beams must be precisely positioned and reliably clamped on the clamping platform 4, especially the ends of the transverse beams must be tightly against the sides of the longitudinal beams to ensure uniform weld gaps. Manual support and clamping are not only labor-intensive but also make it difficult to guarantee the consistency and tightness of the positional relationships between multiple longitudinal and transverse beams, such as the consistency of spacing between multiple transverse beams and the perpendicularity between the longitudinal and transverse beams.

[0037] like Figures 10 to 13 As shown, in order to solve the above-mentioned clamping and positioning problem, the clamping platform 4 in this embodiment includes a rectangular frame 401, which can be welded from square tubes and plates, and is provided with longitudinal beam clamping components and crossbeam clamping components.

[0038] like Figure 11 and Figure 13 As shown, the crossbeam clamping assembly is used to fix the crossbeams. To ensure the consistency of the spacing between multiple crossbeams, it includes two parallel and slidable clamping guide rods 5 and a drive assembly. Each clamping guide rod 5 has multiple clamping plates 501 fixed on it, and the clamping plates 501 on the two clamping guide rods 5 are arranged in pairs. The drive assembly can drive the two clamping guide rods 5 to move synchronously in opposite directions, causing the paired clamping plates 501 to move towards each other, clamping the crossbeams from both sides, thereby positioning all crossbeams at equal intervals, forming a uniformly distributed arrangement.

[0039] When the two clamping guide rods 5 move synchronously in opposite directions, the common method is to directly drive the clamping guide rods 5 to move using a cylinder. However, since the rectangular frame 401 needs to continue to rotate, using a cylinder will inevitably cause the air pipes and cables to become entangled. Moreover, long-term rotation will also cause fatigue in the air pipes and cables, affecting the reliability of use.

[0040] Therefore, such as Figure 11 and Figure 14 As shown, the drive assembly includes two lead screws 502 rotatably connected to the rectangular frame 401 and a transmission rod 503; two clamping guide rods 5 are respectively fixedly connected with lead nuts that correspond one-to-one with the two lead screws 502.

[0041] One end of the transmission rod 503 is fixedly connected to a crank 504, which synchronously drives the two lead screws 502 to rotate. For example, a worm gear is fixed to the end of the lead screw 502, and the transmission rod 503 is fixedly connected to a worm that meshes with the worm gear at the end of the two lead screws 502.

[0042] Furthermore, the two lead screws 502 have opposite helical directions. By rotating the transmission rod 503 through the crank 504, the two lead screws 502 are driven to rotate synchronously, and then the two lead screws 502 are used to drive the two clamping guide rods 5 to move in opposite directions respectively.

[0043] When welding the connection point between the longitudinal beam and the transverse beam, it is necessary to ensure that the longitudinal beam and the transverse beam are in close contact and in a perpendicular state. This can be achieved by pushing the longitudinal beam in a direction perpendicular to the longitudinal beam so that the longitudinal beam is in close contact with the end face of the transverse beam.

[0044] Therefore, such as Figure 11 , Figure 12 and Figure 14 As shown, the longitudinal beam clamping assembly is used to press the longitudinal beam against the end of the crossbeam. It includes a drive shaft 402, several rotating bushings 403, a screw 404, and a pressing plate 405. The drive shaft 402 and the several rotating bushings 403 are rotatably connected to the rectangular frame 401. The number of rotating bushings 403 is four, as shown in the figure.

[0045] The inner walls of the four rotating bushings 403 are provided with internal threads and are threadedly connected to screws 404. One end of each screw 404 is fixedly connected to a pressing plate 405. The pressing plate 405 is arranged parallel to the longitudinal beam and is used to drive the screws 404 to move axially by rotating the rotating bushings 403. The pressing plate 405 pushes the longitudinal beam toward the end of the crossbeam and presses the longitudinal beam against the end of the crossbeam.

[0046] When the longitudinal beam is clamped by the extrusion plate 405, each screw 404 needs to move synchronously, that is, the four rotating bushings 403 need to rotate synchronously. For this purpose, the drive shaft 402 is connected to the four rotating bushings 403 one by one to drive the four rotating bushings 403 to rotate synchronously.

[0047] Specifically, a worm gear is fixedly connected to the outer wall of the rotating bushing 403, and the drive shaft 402 is also fixedly connected to a worm that meshes with the worm gear on the rotating bushing 403. A handwheel can be installed at the end of the drive shaft 402, so that all rotating bushings 403 can be driven to rotate by rotating the drive shaft 402.

[0048] It should be noted that the rectangular frame 401 is provided with two longitudinal beam clamping assemblies, which clamp two longitudinal beams respectively. The drive shafts 402 of the two longitudinal beam clamping assemblies can be connected by synchronous belt drive or chain drive. By making the drive shafts 402 of the two longitudinal beam clamping assemblies rotate synchronously, the two longitudinal beams can be clamped synchronously.

[0049] The operation sequence of the clamping process is as follows: First, place all the crossbeams in the designated position of the crossbeam clamping assembly, shake the handle 504, and drive the two clamping guide rods 5 in sync, so that all the pairs of clamping plates 501 clamp the crossbeams from both sides, and complete the positioning and fixing of the crossbeams. At this time, the clamping plates 501 do not clamp the crossbeams.

[0050] Next, the longitudinal beam is placed at the corresponding position at the end of the crossbeam, and the drive shaft 402 of the longitudinal beam clamping assembly is activated, causing the two pressing plates 405 to advance synchronously, pressing the end face of the longitudinal beam tightly against the side of the crossbeam, thus completing the high-precision assembly and clamping of the workpiece. Finally, the transmission rod 503 is rotated so that the clamping plate 501 clamps the crossbeam, completing the clamping process.

[0051] It should be emphasized that the core improvement of this embodiment is that by moving the two clamping guide rods 5 in opposite directions in sync, a fixed-spacing clamping mechanism for the crossbeam is achieved, and the longitudinal beam is pushed from the side by the clamping plate 501, which realizes the efficient and precise pre-assembly and fixing of all skeleton components of the lifting platform, solves the problems of poor consistency in the assembly of multiple parts and difficulty in manual operation, and lays a solid foundation for subsequent automated high-precision welding.

[0052] Example 4 In Embodiments 2 and 3, since the clamping platform 4 needs to be flipped, it needs to have a certain installation height in order to avoid interference with the ground. However, increasing the installation height of the clamping platform 4 makes it difficult to place the longitudinal beams and transverse beams on the clamping platform 4 during the clamping process, affecting the overall clamping convenience. On the other hand, the installation height of the welding robot 6 also needs to be increased, which makes the installation process of the welding robot 6 more complicated and also makes it difficult to inspect and maintain the welding robot 6 in the future.

[0053] Therefore, when designing the flipping scheme for the clamping platform 4, it should be able to be in a low position when clamping the longitudinal beams and cross beams, as well as during welding. When flipping, in order to avoid interference with the ground, the clamping platform 4 can be raised before flipping, so that the clamping platform 4 can be flipped while also being in a low position during welding and clamping.

[0054] Specifically, such as Figure 7 , Figure 8 , Figures 10 to 12 As shown, the flipping assembly includes a rotating shaft 406 fixed at both ends of a rectangular frame 401. The rotating shaft 406 is rotatably connected to a lifting beam 301 and is connected to the mounting bracket 3 through the lifting beam 301. By driving the rotating shaft 406 to rotate, the rectangular frame 401 can be flipped.

[0055] Meanwhile, the mounting frame 3 is connected to two lifting components, which are respectively connected to two lifting beams 301 to drive the rectangular frame 401 to rise and fall. The lifting components can use cylinders or hydraulic cylinders to drive the rectangular frame 401 to rise and fall, or they can use the screw lifting mechanism shown in the attached diagram. When it is necessary to flip the rectangular frame 401, it can be lifted to a higher position, thereby avoiding interference with the ground.

[0056] However, the above solution requires a dedicated drive device to rotate the clamping platform 4. If the rotating shaft 406 is driven directly by a motor, although it can achieve rotation at any angle, it requires a high-power motor, a reducer, and a complex angle control system, which increases the manufacturing cost and control difficulty of the equipment.

[0057] To this end, the lifting beam 301 is slidably connected to the mounting frame 3, and both rotating shafts 406 are connected to one-way gears 407. The mounting frame 3 is fixedly connected to racks 302 that mesh with the one-way gears 407 one by one. The two racks 302 are symmetrically arranged relative to the rotation center of the rotating shafts 406. This is used to achieve the rotation of the rectangular frame 401 by the rolling of the one-way gears 407 along the racks 302 through the lifting and lowering of the rectangular frame 401. The rectangular frame 401 rotates only in one direction.

[0058] Its working process is as follows: Rising reversal: such as Figure 8 , Figure 16 and Figure 17 As shown, the lifting assembly drives the lifting beam 301 and the clamping platform 4 to rise as a whole. After rising a certain distance, during the continuous rising process, the one-way gear 407 on the rotating shaft 406 at one end of the rectangular frame 401 rolls along the rack 302. Due to its one-way characteristic, the one-way gear 407 is locked at this time and cannot rotate freely relative to the rotating shaft 406. Therefore, the rolling of the one-way gear 407 will force the rotating shaft 406 and the rectangular frame 401 to rotate. During this process, the one-way gear 407 on the rotating shaft 406 at the other end of the rectangular frame 401 is in a free state when it rolls along the rack 302 that meshes with it. Therefore, it can rotate freely relative to the rotating shaft 406 and will not interfere with the rotation of the rectangular frame 401.

[0059] like Figure 18 and 19 As shown, when the lifting assembly drives the lifting beam 301 to the highest point, the clamping platform 4 flips to a vertical position, and the welding robot 6 can then perform further welding on the longitudinal and transverse beams.

[0060] Falling overturn: such as Figure 20 and Figure 21 As shown, the lifting assembly drives the platform to descend. During the descent, the one-way gear 407 rolls in the opposite direction along the rack 302. The locking states of the one-way gears 407 on the two rotating shafts 406 are switched. Since the two racks 302 are symmetrically arranged relative to the rotation center of the rotating shaft 406, during the descent, the other one-way gear 407 drives the rotating shaft 406 to rotate in the same direction as during the ascent, thereby enabling the clamping platform 4 to continue to flip in the same direction.

[0061] like Figure 22 and 23As shown, when the lifting component drives the rectangular frame 401 to continue to descend, as the rectangular frame 401 continues to rotate until the clamping platform 4 rotates to a horizontal state, the welding robot 6 can then weld the back of the clamped longitudinal beam and cross beam.

[0062] It should be noted that during the process of the clamping platform 4 rising from the lowest position to the highest position, it completes a 90° directional flip. Conversely, during the process of descending from the highest position to the lowest position, the clamping platform 4 continues to rotate 90°. This constitutes one reciprocating lifting and lowering process, during which the clamping platform 4 flips 180°. This allows the back and sides of the longitudinal and transverse beams that need to be welded to be presented sequentially.

[0063] It should be emphasized that the core improvement of this embodiment is that by utilizing the lifting motion of the clamping platform 4 itself, and switching the locking state of the two one-way gears during the lifting process, the linear motion is converted into the directional flipping motion of the clamping platform 4. There is no need to configure an additional independent flipping drive motor and control system, which greatly simplifies the equipment structure, reduces manufacturing costs, and achieves reliable linkage between flipping and lifting actions.

[0064] Furthermore, when the clamping platform 4 is rotated 180° and in a low position, after the welding robot 6 has completed welding the back of the longitudinal beams and transverse beams, a lifting receiving platform or conveying device can be directly set up below the clamping platform 4. This allows the welded lifting platform 2 to be directly lowered from the clamping platform 4 to the lifting receiving platform or conveying device by releasing the clamping state of the longitudinal beam clamping components and transverse beam clamping components. This reduces the need for hoisting equipment and greatly improves the convenience of unloading and transferring materials from the lifting platform 2, which is conducive to further improving the overall processing efficiency.

[0065] In the above scheme, when welding is completed and the clamping platform 4 needs to be lowered back to the initial unloading position, the platform must be restored to a horizontal position so that workers can safely and conveniently unload the welded workpiece and install new parts to be welded. If the clamping platform 4 is still tilted or wobbling when it is at its lowest position, it will cause great inconvenience and safety hazards to the loading and unloading operations.

[0066] To solve the problem of attitude locking of the lowest position clamping platform 4 mentioned above, such as Figure 8 , Figure 15 , Figure 17 and Figure 23 As shown, a flat shaft section 408 is machined on the rotating shaft 406. At the bottom of the mounting bracket 3, two opposing limiting plates 303 are fixedly connected.

[0067] Its working process is as follows: Figure 24 As shown, when the lifting component drives the clamping platform 4 to approach its lowest position, as... Figure 22 and Figure 23As shown, the one-way gear 407 gradually disengages from the rack 302 until it is completely disengaged. At this point, the rotation drive of the shaft 406 is released. Simultaneously, the flat shaft section 408 on the shaft 406 precisely engages in the slot between the two limiting plates 303. The plane of the flat shaft section 408 and the inner plane of the limiting plate 303 cooperate with each other to form a form-locked rotational limit. Even if the platform is subjected to an eccentric torque, the shaft 406 can no longer rotate, thus reliably locking the rectangular frame 401 in a horizontal position. When the platform rises again, the flat shaft section 408 first disengages from the limiting plate 303, and then the one-way gear 407 engages with the rack 302, entering the flipping process.

[0068] It should be emphasized that the core improvement of this embodiment lies in the addition of a locking mechanism that combines a flat shaft section with a limiting plate when the clamping platform 4 is in the low position. This mechanism automatically releases the flipping drive and simultaneously locks the horizontal posture when the platform descends to its final position, and automatically unlocks when it rises. It does not rely on any electrical sensors or control programs, safely and reliably solving the problem of posture reset and maintenance after frequent movements of the tooling, ensuring absolute safety and efficiency in loading and unloading operations.

[0069] Meanwhile, the rotating shaft 406 can also be locked manually by installing a locking assembly on the lifting beam 301, for example by using locking screws arranged radially relative to the rotating shaft 406 to lock and fix the rotating shaft 406, thereby ensuring that the position of the clamping platform 4 is fixed.

[0070] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed application.

Claims

1. A car carrier lifting platform, comprising a car frame (1) and a lifting platform (2), characterized in that, The frame (1) is hinged to both sides with a support rod (101) and a first telescopic device (102). The other end of the support rod (101) is hinged to one end of the lifting platform (2), and the frame (1), support rod (101) and lifting platform (2) are arranged in a Z-shape. The other end of the first telescopic device (102) is hinged to the support rod (101); the other end of the lifting platform (2) is hinged to the second telescopic device (201), and the other end of the second telescopic device (201) is hinged to the support rod (101). When the first telescopic device (102) or the second telescopic device (201) extends or retracts, the lifting platform (2) is flipped into an inclined state. When the first telescopic device (102) or the second telescopic device (201) extends or retracts synchronously, the two ends of the lifting platform (2) are raised or lowered synchronously.

2. The car carrier lifting platform as described in claim 1, characterized in that, The lifting platform (2) has a frame structure, including several longitudinal beams and several transverse beams arranged longitudinally and transversely.

3. A processing equipment for a car carrier lifting platform, characterized in that, The welding process applied to the car carrier lifting platform as described in claim 2 includes: a welding platform and a welding robot; the welding platform includes a mounting frame (3) and a clamping platform (4) for clamping the longitudinal beams and transverse beams of the lifting platform (2). The mounting frame (3) is connected to a flipping component, which is used to drive the clamping platform (4) to flip through the flipping component. The flipping angle of the clamping platform (4) is adjusted according to the welding position of the connection between the longitudinal beam and the transverse beam, so as to realize the welding of the connection between the longitudinal beam and the transverse beam.

4. The processing equipment for the car carrier lifting platform as described in claim 3, characterized in that, The clamping platform (4) includes a rectangular frame (401), which is provided with a longitudinal beam clamping assembly for clamping the longitudinal beam and a transverse beam clamping assembly for clamping the transverse beam. The longitudinal beam clamping assembly is used to clamp the longitudinal beam to the end of the transverse beam and make the two fit tightly together; after the transverse beam clamping assembly clamps the transverse beam, several transverse beams are evenly distributed.

5. The processing equipment for the car carrier lifting platform as described in claim 4, characterized in that, The beam clamping assembly includes two clamping guide rods (5) arranged side by side and a drive assembly. Both clamping guide rods (5) are slidably connected to the rectangular frame (401) and are fixedly connected to clamping plates (501). The clamping plates (501) connected to the two clamping guide rods (5) are arranged in pairs. The drive assembly drives the two clamping guide rods (5) to move in opposite directions. The pairs of clamping plates (501) move towards each other and clamp the beam on both sides to achieve clamping and fixing of the beam.

6. The processing equipment for the car carrier lifting platform as described in claim 5, characterized in that, The drive assembly includes two lead screws (502) and a transmission rod (503) rotatably connected to the rectangular frame (401); the two clamping guide rods (5) are respectively fixedly connected with lead nuts that correspond to the two lead screws (502); One end of the transmission rod (503) is fixedly connected to a rocker arm (504), which is used to synchronously drive the two lead screws (502) to rotate through the transmission rod (503), and the two lead screws (502) respectively drive the two clamping guide rods (5) to move in opposite directions.

7. The processing equipment for the car carrier lifting platform as described in claim 4 or 6, characterized in that, The longitudinal beam clamping assembly includes a drive shaft (402) rotatably connected to the rectangular frame (401) and several rotating bushings (403). The drive shaft (402) and several rotating bushings (403) are connected in a transmission manner to drive the several rotating bushings (403) to rotate synchronously. The inner walls of several rotating bushings (403) are provided with internal threads and are threadedly connected to screws (404). One end of several screws (404) is fixedly connected to a pressing plate (405), which is used to drive the screws (404) to move axially by rotating the rotating bushings (403), and push the longitudinal beam toward the end of the crossbeam by the pressing plate (405), so that the longitudinal beam is pressed against the end of the crossbeam.

8. The processing equipment for the car carrier lifting platform as described in claim 4, characterized in that, The flipping assembly includes a rotating shaft (406) fixed at both ends of a rectangular frame (401). The rotating shaft (406) is rotatably connected to a lifting beam (301) and is connected to the mounting frame (3) through the lifting beam (301). By driving the rotating shaft (406) to rotate, the rectangular frame (401) can be flipped.

9. The processing equipment for the car carrier lifting platform as described in claim 8, characterized in that, The mounting frame (3) is connected to a lifting assembly, which is connected to a lifting beam (301) and is used to drive the rectangular frame (401) to move up and down. The lifting beam (301) is slidably connected to the mounting frame (3), and both rotating shafts (406) are connected to one-way gears (407). The mounting frame (3) is fixedly connected to racks (302) that mesh with the one-way gears (407). The two racks (302) are symmetrically arranged relative to the rotation center of the rotating shafts (406). They are used to achieve the rotation of the rectangular frame (401) by the lifting and lowering of the rectangular frame (401) and the one-way gears (407) rolling along the racks (302). The rectangular frame (401) rotates only in one direction.

10. The processing equipment for the car carrier lifting platform as described in claim 9, characterized in that, The rotating shaft (406) has a flat shaft section (408), and the mounting bracket (3) is fixedly connected with two limiting plates (303). The two limiting plates (303) are symmetrically arranged relative to the flat shaft section (408) for separating the one-way gear (407) from the rack (302) when the rectangular frame (401) is in a low position. At this time, the flat shaft section (408) is inserted between the two limiting plates (303), and the rotation of the rotating shaft (406) is limited by the limiting plates (303), so that the rectangular frame (401) maintains a horizontal posture.

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