General assembly line lifting appliance for three or four wheel micro car industry

Abstract

The utility model relates to three four wheel micro -car industry general assembly workshop general assembly line lifting appliance, including hanging block and lifting point connecting plate, the crossbeam, the longitudinal beam pass through the combination of welding and become scissor fork upper frame and scissor fork lower frame, the I -beam is centrally welded and is connected into an organic whole in the upper frame and lower frame, the I -beam middle section welds the lifting gourd hanging block, scissor fork upper frame and scissor fork lower frame install the same side frame four corners welding scissor fork connecting plate and sliding block connecting plate of lifting gourd hanging block, scissor fork connecting pipe and another connecting plate are welded together and are bolted and screwed to scissor fork connecting plate through bolt and nut, the sliding block mechanism is provided with sliding block connecting pipe, and the sliding block mechanism is bolted and screwed to the sliding block connecting plate, the utility model can be used for full -size bottom support hoisting, satisfy safe and reliable, avoid hoisting deformation, satisfy lifting point wide -range adjustable, can satisfy the lifting appliance of micro -car general many vehicle models collinear characteristics.

Description

Technical Field

[0001] This utility model relates to a lifting tool, specifically a general assembly line lifting tool for the final assembly workshop of the three- and four-wheeled micro-vehicle industry. Background Technology

[0002] The existing lifting equipment uses a strap-on method, passing through the side door opening and then through the cab. This method results in swaying during installation, posing a safety risk, and the A-pillars and front and rear door openings are prone to deformation under stress, leading to paint cracking, compromised sealing, and other quality defects. This is inconsistent with increasingly sophisticated consumer demands and the industry's trend towards higher-end products. The micro-vehicle industry produces a wide variety of products with significant size variations. Using the same lifting equipment as the automotive industry would mean a single production line cannot accommodate multiple products, and building multiple production lines would be too costly, while the utilization rate of a single production line would be low.

[0003] Currently, a utility model patent with publication number CN201971544U discloses a universal car body lifting device, including a lifting column, a crossbeam, and a longitudinal beam. Both ends of the longitudinal beam are connected to a cylinder connecting mechanism. The crossbeam is hinged to the lifting columns on both sides. A movable rod is connected to the cylinder connecting mechanism; one end of the movable rod is hinged to the cylinder connecting mechanism, and the other end is hinged to the lifting column. A cylinder push rod is connected between the front and rear lifting columns. A lifting plate is connected to the lower end of the front and rear lifting columns. A cylinder is installed between the longitudinal beam and the cylinder push rod; one end of the cylinder is hinged to the cylinder connecting mechanism, and the other end is hinged to the cylinder push rod. The lifting device has a centrally symmetrical structure. This utility model has the advantages of being suitable for various car bodies, having a large contact area between the car body and the lifting device, minimal deformation at the contact point, and the ability to automatically clamp, lift, and unload the car body. It is particularly suitable for use in final assembly workshops.

[0004] As can be seen from the above-disclosed technical content, as prior art, the utility model with announcement number CN201971544U achieves the advantages of a large contact area between the car body and the lifting device, minimal deformation at the contact point of the car body, and automatic clamping, lifting and unloading of the car body through the lifting plate. However, the length of the lifting plate is fixed, which cannot adapt to the actual production environment of the micro-vehicle industry with many product types and large size differences. Therefore, it is not suitable for the final assembly of three- and four-wheeled micro-vehicles. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a universal assembly line lifting tool for the three- and four-wheeled micro-vehicle industry. It can be used for full-size bottom lifting, which not only meets the requirements of safety and reliability and avoids lifting deformation, but also allows for a wide range of adjustable lifting points. It can meet the lifting tool requirements of the common multi-model co-production characteristics of micro-vehicles.

[0006] To achieve the above objectives, this utility model provides a universal assembly line lifting tool for the final assembly workshop of three- and four-wheeled micro-vehicles, including a lifting block and a lifting point connecting plate. The crossbeam and longitudinal beam are welded together to form a scissor fork upper frame and a scissor fork lower frame. The I-beam is welded and connected as a whole in the upper and lower frames, and a hoist lifting block is welded to the middle section of the I-beam.

[0007] The upper and lower frames of the scissor fork are equipped with welding hoist hanging blocks. Scissor fork connecting plates and slider connecting plates are welded to the four corners of the same side frame. The scissor fork connecting pipe is welded to another connecting plate and then bolted to the scissor fork connecting plate with bolts and nuts. A slider connecting pipe is installed on the slider mechanism, which is bolted to the slider connecting plate. The upper and lower frames of the scissor fork are placed face-to-face, with multiple sets of scissor fork beams and scissor fork shafts installed sequentially in the middle via pins, slotted nuts, and cotter pins. A mounting plate is welded to the center of the lower frame crossbeam, and a hanging block is welded to the center of the two longitudinal beams of the upper frame, forming a complete scissor fork mechanism.

[0008] The oblique square tube, vertical square tube and horizontal square tube are welded together from top to bottom. The mounting plate is welded to the other end of the oblique square tube. The whole assembly is aligned with the mounting plate hole positions on the lower frame of the scissor fork and screwed onto the lower frame of the scissor fork.

[0009] One end of the telescopic arm 2 is welded with the telescopic arm anti-detachment limit 1. The telescopic arm 2 is inserted into the telescopic arm 1. The end is sealed with the telescopic arm anti-detachment limit 2. The other end is sealed with a plug plate. The whole is welded to the U-shaped plate. The U-shaped plate and the upper surface of the telescopic arm 1 are reinforced with a telescopic arm reinforcing plate.

[0010] Insert the U-shaped plate into the horizontal square tube, align the pivot hole, and insert the rotating pin / circlip.

[0011] The telescopic arm is equipped with lifting block assemblies at both ends; the telescopic arm rotation locking mechanism is installed in the mounting hole at the root of the horizontal tube, and the other half of the locking tooth of the telescopic arm rotation locking mechanism is welded to the rotating arm to play a locking role; the lifting frame and the adjustment rotation, extension and lifting mechanism are completed.

[0012] The upper and lower hooks of the electric hoist are respectively attached to the hoist hanging blocks on the upper and lower frames of the scissor fork, which serve as lifting and lowering mechanisms.

[0013] In addition, the universal assembly line lifting tool for the three- and four-wheeled micro-vehicle industry proposed in the above embodiments of this utility model may also have the following additional technical features:

[0014] As a further improvement of this utility model, the upper and lower frames of the scissor fork, which are composed of the crossbeam and the longitudinal beam, are equipped with fall arresters by means of a hoist hanging block.

[0015] As a further improvement of this utility model, a reinforcing plate is welded at the junction of the rhomboid tube and the vertical tube.

[0016] As a further improvement of this utility model, adjusting nuts are welded into the mounting holes at both ends of the telescopic arm, and the screw of the lifting block assembly is screwed into the adjusting nuts.

[0017] By means of the above solution, this utility model has at least the following advantages: compared with conventional lifting tools, the scissor fork mechanism enhances the lifting stability; the telescopic and rotatable telescopic arm and the telescopic arm rotation locking mechanism enhance the adjustment range, so that it can meet the lifting needs of most common three- and four-wheeled vehicle chassis; and the independent vertically adjustable polyurethane lifting block assembly better adapts to different chassis. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of a general assembly line lifting tool in the final assembly workshop of the three- and four-wheeled micro-vehicle industry;

[0019] Figure 2 This is a side view of a general-purpose assembly line lifting tool in the final assembly workshop of the three- and four-wheeled micro-vehicle industry;

[0020] In the diagram: 1. Hanging block, 2. Lifting point connecting plate, 3. Crossbeam, 4. Longitudinal beam, 5. I-beam, 6. Scissor fork connecting plate, 7. Bolt, 8. Nut, 9. Scissor fork connecting pipe, 10. Slider connecting plate, 11. Slider mechanism, 12. Slider connecting pipe, 13. Hoist hanging block, 14. Electric hoist, 15. Fall arrestor, 16. Scissor fork beam, 17. Scissor fork shaft, 18. Slotted nut, 19. Cotter pin, 20. Mounting plate, 21. Rhomboid tube, 22. Cubic tube, 23. Reinforcing plate, 24. Horizontal tube, 25. U-shaped plate, 26. Telescopic arm one, 27. Telescopic arm two, 28. Telescopic arm reinforcing plate, 29. Telescopic arm anti-detachment limit one, 30. Telescopic arm anti-detachment limit two, 31. Lifting block assembly, 32. Adjusting nut, 33. Telescopic arm rotation locking mechanism, 34. Rotating pin / circlip. Detailed Implementation

[0021] The following description, in conjunction with the accompanying drawings, describes the universal assembly line lifting tool for the three- and four-wheeled micro-vehicle industry assembly workshop of this utility model.

[0022] In Embodiment 1 of this application, as Figure 1 and Figure 2 As shown, the general assembly line lifting tool for the three- and four-wheeled micro-vehicle industry (hereinafter referred to as "the present invention") includes a lifting block 1 and a lifting point connecting plate 2. The crossbeam 3 and the longitudinal beam 4 are welded together to form a scissor fork upper frame and a scissor fork lower frame. The I-beam 5 is welded together in the middle of the upper frame and the lower frame. The hoist lifting block 13 is welded to the middle section of the I-beam 5.

[0023] The upper and lower frames of the scissor fork are equipped with welding hoist hanging block 13. Scissor fork connecting plates 6 and slider connecting plates 10 are welded to the four corners of the same side frame. Scissor fork connecting pipe 9 is welded to another connecting plate and then screwed onto scissor fork connecting plate 6 using bolts 7 and nuts 8. Slider connecting pipe 12 is installed on slider mechanism 11, and slider mechanism 11 is screwed onto slider connecting plate 10. The upper and lower frames of the scissor fork are placed face-to-face, with multiple sets of scissor fork beams 16 and scissor fork shafts 17 installed sequentially in the middle via pins, slotted nuts 18, and cotter pins 19. A mounting plate 20 is welded to the center of the lower frame crossbeam 3, and a hanging block 1 is welded to the center of the two longitudinal beams 4 of the upper frame, forming a complete scissor fork mechanism.

[0024] The oblique square tube 21, vertical square tube 22, and horizontal square tube 24 are welded together from top to bottom. The other end of the oblique square tube 21 is welded with a mounting plate 20. The entire assembly is aligned with the mounting plate holes on the lower frame of the scissor fork and screwed onto the lower frame. One end of the telescopic arm 27 is welded with a telescopic arm anti-detachment limiter 29. The telescopic arm 27 is inserted into the telescopic arm 26, and the end is sealed with a telescopic arm anti-detachment limiter 30. The other end is sealed with a plug plate. The entire assembly is welded to the U-shaped plate 25. A telescopic arm reinforcing plate 28 is welded to the upper surface of the U-shaped plate 25 and the telescopic arm 26. The U-shaped plate 25 is fitted into the horizontal square tube 24, aligned with the pivot hole, and a rotating pin / circlip 34 is inserted; the head end of the telescopic arm 27 is equipped with a lifting block assembly 31; the telescopic arm rotation locking mechanism 33 is installed to the mounting hole at the root of the horizontal square tube 24, and the other half of the locking teeth of the telescopic arm rotation locking mechanism 33 is separately welded to the rotating arm to play a locking role; the lifting frame and the adjustment of the rotation, extension, and lifting mechanisms are completed; the upper and lower hooks of the electric hoist 14 respectively hang the electric hoist hanging blocks 13 on the upper and lower frames of the scissor fork to play a lifting role. The hanging block 1 and the lifting point connecting plate 2 are fixedly installed on the upper part of the upper frame of the scissor fork.

[0025] A universal car body lifting device (hereinafter referred to as "the patent") with utility model announcement number CN201971544U achieves the advantages of a large contact area between the car body and the lifting device, minimal deformation at the contact point of the car body, and automatic clamping, lifting, and unloading of the car body through the lifting plate. However, the lifting plate has a fixed length and cannot adapt to the actual production environment of the micro-vehicle industry, which has a wide variety of products and large size differences. Therefore, it is not suitable for the final assembly of three- and four-wheeled micro-vehicles. The present invention adopts a scissor fork mechanism to enhance the lifting stability; adopts a telescopic and rotatable telescopic arm 27 and a telescopic arm rotation locking mechanism 33 to enhance the adjustment range, so that it can meet the lifting needs of most common-sized three- and four-wheeled vehicle chassis; and adopts an independent vertically adjustable polyurethane lifting block assembly 31 to better adapt to different chassis.

[0026] This second embodiment is basically the same in structure as the first embodiment, the difference being that, as Figure 1 and Figure 2As shown, the hooks on the upper and lower parts of the fall arrestor 8 are connected to the upper frame 4 and the lower frame 11 respectively, which effectively prevents the scissor fork beam 10 from opening too much and eliminates the possibility of equipment damage.

[0027] To further optimize the working efficiency and improve safety, the upper and lower frames of the scissor fork, composed of the crossbeam 3 and the longitudinal beam 4, are equipped with fall arresters 15 via hoist hanging blocks 13. To enhance the strength of the joint between the oblique square tube 21 and the vertical square tube 22, a reinforcing plate 23 is welded to the joint. To accommodate more vehicle models, an adjusting nut 32 is welded into the mounting hole at the head end of the telescopic arm 27, and the screw of the lifting block assembly 31 is screwed into the adjusting nut 32.

[0028] When in use, simply install the general assembly line lifting tool for the three- and four-wheeled micro-vehicle industry's final assembly workshop, and the equipment can be put into operation.

[0029] When this utility model is used, its specific operation is as follows:

[0030] Connect the upper hanging block 1 of the spreader and the pin shaft of the heavy-duty trolley of the production line together to form part of the production line.

[0031] When the frame / body is online, open the four bottom rotating telescopic arms, use the transfer trolley to push the frame / body to the middle of the lifting device, and use the remote control button to control the lifting of the lower frame of the scissor fork through the electric hoist 14 to lower the four bottom rotating telescopic arms to a height lower than the frame / body. The U-shaped plate 25, telescopic arm one 26 and telescopic arm two 27 cooperate with each other to align the lifting block assembly 31 with the four lifting points of the frame / body. The rotating lifting block assembly 31 is adjusted to the height, and the telescopic arm rotation locking mechanism 33 locks to prevent the U-shaped plate 25, telescopic arm one 26 and telescopic arm two 27 from rotating, ensuring safety.

[0032] The remote control button controls the lifting. The lifting device carries the frame / body to the required assembly height and stops. The transfer trolley is then removed, and the assembly line is completed. Subsequent workstations can be adjusted according to the assembly requirements. The whole process is driven by the assembly line chain.

[0033] After assembly is completed, the remote control button controls the descent, placing the vehicle directly onto the flat chain. The spreader detaches from the vehicle, and the rotating arm consisting of the rotating U-shaped plate 25, the first telescopic arm 26, and the second telescopic arm 27 is pulled up. The second telescopic arm 27 is then retracted, and the spreader enters the next cycle with the assembly line. The vehicle also completes the chassis assembly and enters the next section.

[0034] In summary, the universal assembly line lifting tool for three- and four-wheeled micro-vehicles in the present invention adopts a scissor fork mechanism to enhance lifting stability; it adopts a telescopic and rotatable telescopic arm 27 and a telescopic arm rotation locking mechanism 33 to enhance the range of adjustment and applicability, so that it can meet the lifting needs of most common-sized three- and four-wheeled vehicle chassis; and it adopts an independent vertically adjustable polyurethane lifting block assembly 31 to better adapt to different chassis.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A general-purpose assembly line lifting device for the final assembly workshop of three- and four-wheeled micro-vehicles, comprising a lifting block (1), a lifting point connecting plate (2), a crossbeam (3), and a longitudinal beam (4), characterized in that, The aforementioned crossbeams (3) and longitudinal beams (4) are welded together to form a scissor fork upper frame and a scissor fork lower frame. The I-beam (5) is welded together in the middle of the upper and lower frames to form a whole. The hoist hanging block (13) is welded in the middle section of the I-beam (5). The upper and lower frames of the scissor fork are equipped with welding hoist hanging blocks (13). The four corners of the same side frame are welded with scissor fork connecting plates (6) and slider connecting plates (10). The scissor fork connecting pipe (9) is welded to another connecting plate and then screwed onto the scissor fork connecting plate (6) with bolts (7) and nuts (8). The slider mechanism (11) is equipped with slider connecting pipe (12) and screwed onto slider connecting plate (10). The upper and lower frames of the scissor fork are placed face to face. Multiple sets of scissor fork beams (16) and scissor fork shafts (17) are installed in the middle through pins, slotted nuts (18) and cotter pins (19) and connected by pins. The lower frame crossbeam (3) of the scissor fork is welded with mounting plate (20). The two longitudinal beams (4) of the upper frame of the scissor fork are welded with lifting point connecting plate (2) and hanging block (1) in the middle. A complete scissor fork mechanism is formed. The rhomboid tube (21), the vertical tube (22), and the horizontal tube (24) are welded together from top to bottom, and the mounting plate (20) is welded to the other end of the rhomboid tube (21). Telescopic arm 2 (27) is welded to one end with telescopic arm anti-detachment limit 1 (29), telescopic arm 2 (27) is inserted into telescopic arm 1 (26), and telescopic arm anti-detachment limit 2 (30) is welded to the end. The other end is sealed with a blocking plate and welded. The whole is welded to the U-shaped plate (25), and the U-shaped plate (25) and the upper surface of telescopic arm 1 (26) are reinforced with a telescopic arm reinforcing plate (28). The U-shaped plate (25) is fitted into the horizontal square tube (24), the pivot hole is aligned, and the rotating pin / circlip (34) is inserted. The telescopic arm (27) has a lifting block assembly (31) at its head end; the telescopic arm rotation locking mechanism (33) is installed in the mounting hole at the root of the horizontal square tube (24), and the other half of the locking tooth of the telescopic arm rotation locking mechanism (33) is welded to the rotating arm. The upper and lower hooks of the electric hoist (14) are respectively attached to the electric hoist hanging blocks (13) on the upper and lower frames of the scissor fork.

2. The universal assembly line lifting tool for the three- and four-wheeled micro-vehicle industry's final assembly workshop as described in claim 1, characterized in that, The upper and lower frames of the scissor fork, which are composed of the crossbeam (3) and the longitudinal beam (4), are equipped with fall arresters (15) by means of a hoist hanging block (13).

3. The universal assembly line lifting tool for the three- and four-wheeled micro-vehicle industry's final assembly workshop as described in claim 2, characterized in that, A reinforcing plate (23) is welded to the junction of the rhomboid tube (21) and the vertical tube (22).

4. The universal assembly line lifting tool for the three- and four-wheeled micro-vehicle industry's final assembly workshop as described in claim 1, characterized in that, The adjusting nut (32) is welded into the mounting hole at the head end of the telescopic arm (27), and the screw of the lifting block assembly (31) is screwed into the adjusting nut (32).

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