A device for realizing the lifting and flipping of large workpieces

Abstract

The present invention relates to the technical field of large workpiece processing, and in particular to a device for realizing the lifting and turning of large workpieces. It includes a base, a support column is fixedly connected to the outside of the base, a threaded rod is arranged inside the support column, a threaded sleeve is sleeved on the outside of the threaded rod, one end of a support rod and a fixing plate are fixedly connected to the outside of the threaded sleeve, a first motor is fixedly connected to the left end face of the fixing plate, a first worm is fixedly connected to the end of the main shaft of the first motor, a first worm gear is meshed on the outside of the first worm, a gear is fixedly connected to the outside of the first worm gear, a lower tooth ring is meshed on the outside of the gear, an upper tooth ring is hinge-connected to the outside of the lower tooth ring, and sliding grooves are provided on the inner sides of the lower tooth ring and the upper tooth ring. In this way, the self-locking and deceleration functions between the first worm and the first worm gear can be utilized to enable the workpiece in the upper tooth ring and the lower tooth ring to be adjusted to any angle as required, so as to solve the problem that the existing turning device can generally only turn at an angle of 90 degrees or 180 degrees.

Description

Technical Field

[0001] The present invention relates to the technical field of large workpiece processing, and specifically to a device for realizing the lifting and flipping of large workpieces. Background Art

[0002] In the prior art, when welding large workpieces, it is often necessary to flip the workpieces. However, during the flipping process of large workpieces, general factories use multiple cranes or multiple hooks to cooperate. If the cooperation is improper or the lifting method is inappropriate, accidents such as the workpiece falling often occur. Due to the large size and heavy weight of the workpiece, after falling, the workpiece is often damaged, the surrounding equipment is damaged, and even personal injury accidents may occur. The hook operation is usually connected by a flexible steel wire rope, and the shaking during the lifting and flipping process exacerbates the danger of the flipping process. With the development of society, industries such as wind power generation, the automotive industry, agricultural machinery, and aerospace have developed vigorously. During the manufacturing of large workpieces in these industries, safety problems caused by workpiece flipping are often faced. Therefore, an anti-falling device needs to be additionally installed during the processing. Existing common processing devices are often composed of two parts: a lifting drive and a flipping drive, and generally, the flipping angle can only be 90 degrees or 180 degrees. Therefore, a device for realizing the lifting and flipping of large workpieces is proposed to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for realizing the lifting and flipping of large workpieces to solve the problem that the flipping angle of the existing flipping device can generally only be 90 degrees or 180 degrees, and it has good popularization value.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] It includes a base. Both ends of the outer side of the base are fixedly connected with support columns. A threaded rod is arranged inside the support columns. Both ends of the threaded rod are fixedly connected with rotating blocks. The outer sides of the rotating blocks are rotationally connected with the support columns. A threaded sleeve is sleeved on the outer side of the threaded rod. One end of a support rod and a fixing plate are fixedly connected to the outer side of the threaded sleeve. The left end face of the fixing plate is fixedly connected with a first motor. The connection part of the first motor and the fixing plate can move up and down along the support column. The end of the main shaft of the first motor is fixedly connected with a first worm. A first worm gear is meshed on the outer side of the first worm. A gear is fixedly connected to the outer side of the first worm gear. A toothed ring is meshed on the outer side of the gear. The toothed ring is composed of a lower toothed ring and an upper toothed ring. One end of the lower toothed ring is hinged to one end of the upper toothed ring. The other end of the lower toothed ring is detachably connected to the other end of the upper toothed ring. Sliding grooves are formed inside both the lower toothed ring and the upper toothed ring. The other end of the support rod extends out of the support column and is slidably connected with the sliding groove, and the support rod can move up and down along the support column.

[0006] Preferably, limiting blocks are fixedly connected to the inner sides of the lower tooth ring and the upper tooth ring. A limiting groove is formed at one end of each limiting block facing the centers of the upper tooth ring and the lower tooth ring. One end of a first spring is fixedly connected to the inner side of the limiting groove, and the other end of the first spring is fixedly connected to one end of a telescopic block. Part of the telescopic block is located in the limiting groove, and the other end of the telescopic block is fixedly connected to an anti-slip block.

[0007] Preferably, through holes are formed in the side walls of the limiting blocks, and the through holes penetrate into the limiting grooves. Set screws are screwed into the through holes. One end of each set screw contacts the telescopic block, and the other end of each set screw is fixedly connected to a turning handle. The number of the limiting blocks, the first springs, and the telescopic blocks is 4 to 8, and the limiting blocks, the first springs, and the telescopic blocks are evenly arranged on the inner sides of the lower tooth ring and the upper tooth ring.

[0008] Preferably, a second motor is fixedly connected to the lower side of the right end face of the right support column. The end of the main shaft of the second motor is fixedly connected to a second worm. The second worm extends into the support column. A second worm gear is meshed with the outer side of the second worm within the support column. The inner side of the second worm gear is fixedly connected to the outer side of the lower part of the threaded rod.

[0009] Preferably, a buffer plate is slidably connected between the two support columns. The buffer plate slides up and down along the support columns. A fixed block is fixedly connected to the lower end face of the buffer plate. A support block is fixedly connected to the upper end face of the base. A sliding rod is fixedly connected between the support blocks. Two sliders are slidably connected to the outer side of the sliding rod. A third spring is arranged between the two sliders. The third spring is sleeved on the outer side of the sliding rod and is fixedly connected to the two sliders at both ends respectively. One end of a connecting rod is rotatably connected to the inner sides of the sliders through a rotating shaft, and the other end of the connecting rod is rotatably connected to the fixed block through a rotating shaft.

[0010] Preferably, a buffer pad is fixedly connected to the upper end face of the buffer plate. A groove is formed in the upper part of the buffer pad, and the shape of the groove is hemispherical.

[0011] Preferably, a first clamping rod is rotatably connected to the inner side of the right part of the upper tooth ring through a rotating shaft. One end of a second spring is fixedly connected to the inner side of the right part of the upper tooth ring, and the other end of the second spring is fixedly connected to the first clamping rod. A second clamping rod is fixedly connected to the inner side of the right part of the lower tooth ring, and the second clamping rod is engaged with the first clamping rod.

[0012] Preferably, a handle is fixedly connected to the outer side of the first clamping rod, and a handle sleeve is fixedly connected to the outer side of the handle.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the present invention, by providing the first motor, the first worm, the first worm gear, the gear, the lower toothed ring and the upper toothed ring, the workpieces within the upper toothed ring and the lower toothed ring can be adjusted to any angle as needed by utilizing the self-locking and speed reduction functions between the first worm and the first worm gear, so as to solve the problem that the flipping angle of the existing flipping device can generally only be 90 degrees or 180 degrees, and it has good popularization value.

[0015] 2. In the present invention, by providing the second worm gear, the second worm, the threaded rod and the threaded sleeve, the self-locking of the second worm and the second worm gear can be utilized to enable the workpiece to achieve self-locking during the process of height lifting, so as to solve the problem of needing to additionally install an anti-falling device during the processing, and reduce the production expenditure of the enterprise.

[0016] 3. In the present invention, by providing the first clamping rod, the second clamping rod, the second spring, the handle and the handle sleeve, the installation and disassembly of the overall device can be made more convenient by the convenient clamping and disengagement of the first clamping rod and the second clamping rod, and the practical performance of the overall device is improved.

[0017] 4. In the present invention, by providing the buffer plate, the buffer pad, the support block, the slide rod, the slider and the third spring, the elastic potential energy of the buffer pad and the third spring can be utilized to effectively buffer the impact force of the workpiece falling, so as to solve the problem of personal injury accidents occurring during the falling process of the workpiece, and improve the safety performance of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention;

[0019] Figure 2 is of the present invention Figure 1 the installation structural schematic diagram at A;

[0020] Figure 3 is of the present invention Figure 1 the installation structural schematic diagram at B of the present invention;

[0021] Figure 4 is of the present invention Figure 1 the installation structural schematic diagram at C of the present invention;

[0022] Figure 5 is of the present invention Figure 1 the installation structural schematic diagram at D of the present invention;

[0023] Figure 6 is of the present invention Figure 1 the installation structural schematic diagram at E of the present invention.

[0024] In the figure: 1 - base, 2 - support column, 3 - threaded rod, 4 - rotating block, 5 - threaded sleeve, 6 - support rod, 7 - fixing plate, 8 - first motor, 9 - first worm, 10 - first worm gear, 11 - gear, 12 - lower toothed ring, 13 - upper toothed ring, 14 - chute, 15 - limit block, 16 - limit groove, 17 - first spring, 18 - telescopic block, 19 - anti-slip block, 20 - second motor, 21 - second worm, 22 - second worm gear, 23 - buffer plate, 24 - fixing block, 25 - buffer pad, 26 - groove, 27 - support block, 28 - slide bar, 29 - slider, 30 - connecting rod, 31 - first clamping rod, 32 - second spring, 33 - second clamping rod, 34 - handle, 35 - handle sleeve, 36 - set bolt, 37 - turning hand, 38 - third spring, 39 - through hole. Detailed implementation manner

[0025] Embodiment 1:

[0026] Please refer to Figures 1-6 , the present invention provides a technical solution:

[0027] A device for realizing the lifting and flipping of large workpieces, comprising a base 1. At both ends of the outer side of the base 1, support columns 2 are fixedly connected. Inside the support columns 2, threaded rods 3 are arranged. At both ends of the threaded rod 3, rotating blocks 4 are fixedly connected. The outer sides of the rotating blocks 4 are rotatably connected to the support columns 2. Specifically, grooves are opened at the top and bottom ends inside the support columns 2, and the rotating blocks 4 are located inside the grooves; or the top and bottom ends inside the support columns 2 are respectively connected to the rotating blocks 4 at both ends of the threaded rod 3 through rotating connectors such as bearings. A threaded sleeve 5 is sleeved on the outer side of the threaded rod 3. One end of a support rod 6 and a fixing plate 7 are fixedly connected to the outer side of the threaded sleeve 5. A first motor 8 is fixedly connected to the left end face of the fixing plate 7. The connection part of the first motor 8 and the fixing plate 7 can move up and down along the support column 2. The end of the main shaft of the first motor 8 is fixedly connected to a first worm 9. A first worm gear 10 is engaged with the outer side of the first worm 9. A gear 11 is fixedly connected to the outer side of the first worm gear 10. A toothed ring is engaged with the outer side of the gear 11. The toothed ring is composed of a lower toothed ring 12 and an upper toothed ring 13. One end of the lower toothed ring 12 is hinged to one end of the upper toothed ring 13, and the other end of the lower toothed ring 12 is detachably connected to the other end of the upper toothed ring 13. Sliding grooves 14 are opened on the inner sides of the lower toothed ring 12 and the upper toothed ring 13. The other end of the support rod 6 extends out of the support column 2 and is slidably connected to the sliding groove 14, and the support rod 6 can move up and down along the support column 2. Through grooves for supporting the up and down sliding of the support rod 6 and the fixed rod 7 are opened on the support column 2. In this way, the self-locking and deceleration functions between the first worm 9 and the first worm gear 10 can be used to adjust the workpiece inside the upper toothed ring 13 and the lower toothed ring 12 to any angle as needed, so as to solve the problem that the existing flipping devices can generally only flip at 90 degrees or 180 degrees, and has good popularization value. Limit blocks 15 are fixedly connected to the inner sides of the lower toothed ring 12 and the upper toothed ring 13. A limit groove 16 is opened at one end of the limit block 15 facing the centers of the upper toothed ring 12 and the lower toothed ring 13. One end of a first spring 17 is fixedly connected to the inner side of the limit groove 16. The other end of the first spring 17 is fixedly connected to one end of a telescopic block 18. Part of the telescopic block 18 is located inside the limit groove 16. An anti-slip block 19 is fixedly connected to the other end of the telescopic block 18. In this way, the fixation of circular workpieces can be facilitated. A through hole 39 is opened on the side wall of the limit block 15, and the through hole 39 penetrates through to the limit groove 16. A set screw 36 is screwed in the through hole 39. One end of the set screw 36 is in contact with the telescopic block 18, and a turning handle 37 is fixedly connected to the other end of the set screw 36. The number of the limit blocks 15, the first springs 17 and the telescopic blocks 18 is 6. The limit blocks 15, the first springs 17 and the telescopic blocks 18 are evenly arranged on the inner sides of the lower toothed ring 12 and the upper toothed ring 13. In this way, the force on the workpiece can be more balanced. A second motor 20 is fixedly connected to the lower side of the right end face of the right support column 2. The end of the main shaft of the second motor 20 is fixedly connected to a second worm 21. The second worm 21 extends into the support column 2. A second worm gear 22 is engaged with the outer side of the second worm 21 located inside the support column 2.The inner side of the second worm gear 22 is fixedly connected to the outer side of the lower part of the threaded rod 3. In this way, the self-locking of the second worm 21 and the second worm gear 22 can be utilized to enable the workpiece to achieve self-locking during the height lifting process, so as to solve the problem of needing to additionally install an anti-falling device during the processing, reducing the production expenditure of the enterprise. A buffer plate 23 is slidably connected between the two support columns 2. The buffer plate 23 slides up and down along the support column 2. A fixed block 24 is fixedly connected to the lower end surface of the buffer plate 23. A support block 27 is fixedly connected to the upper end surface of the base 1. A slide rod 28 is fixedly connected between the support blocks 27. Two sliders 29 are slidably connected to the outer side of the slide rod 28. A third spring 38 is arranged between the two sliders 29. The third spring 38 is sleeved on the outer side of the slide rod 28 and is fixedly connected to the two sliders 29 at both ends. One end of a connecting rod 30 is rotatably connected to the inner side of the slider 29 through a rotating shaft, and the other end of the connecting rod 30 is rotatably connected to the fixed block 24 through a rotating shaft. A buffer pad 25 is fixedly connected to the upper end surface of the buffer plate 23. A groove 26 is formed in the upper part of the buffer pad 25. The shape of the groove 26 is hemispherical. The buffer plate 23 and the support column 2 are connected through a sliding device, such as a ball structure. In this way, the elastic potential energy of the buffer pad 25 and the third spring 38 can be utilized to effectively buffer the impact force of the workpiece falling, so as to solve the problem of personal injury accidents occurring during the falling process of the workpiece and improve the safety performance of the overall device. The right inner side of the upper tooth ring 13 is rotatably connected to a first clamping rod 31 through a rotating shaft. One end of a second spring 32 is fixedly connected to the right inner side of the upper tooth ring 13, and the other end of the second spring 32 is fixedly connected to the first clamping rod 31. A second clamping rod 33 is fixedly connected to the right inner side of the lower tooth ring 12. The second clamping rod 33 is engaged with the first clamping rod 31. In this way, the convenient engagement and disengagement of the first clamping rod 31 and the second clamping rod 33 can be utilized to make the installation and disassembly of the overall device more convenient and improve the practical performance of the overall device. A handle 34 is fixedly connected to the outer side of the first clamping rod 31, and a handle sleeve 35 is fixedly connected to the outer side of the handle 34, making the overall device more reasonable.

[0028] Workflow: When each component needs to use electricity, it is connected to an external power supply. When a large circular workpiece needs to be processed, first hold the handle sleeve 35 and pull the handle 34. At this time, the first latch rod 31 disengages from the second latch rod 33. Then place the circular workpiece on the 6 anti-sliding blocks 19 provided on the lower tooth ring 12. Subsequently, lower the upper tooth ring 13. The first latch rod 31 will engage with the second latch rod 33 under the action of the gravitational potential energy of the upper tooth ring 13 and the elastic potential energy of the second spring 32. Then tighten the set bolt 36. If it is necessary to adjust the height of the workpiece, start the second motor 20. The second motor 20 drives the second worm 21 to rotate, thereby engaging the second worm gear 22 to rotate, and then driving the threaded rod 3 to rotate, enabling the support rod 6 to move up and down. When it is necessary to adjust the processing angle of the workpiece, turn on the first motor 8. The first motor 8 drives the first worm 9 to rotate, thereby driving the first worm gear 10 to rotate, and then driving the lower tooth ring 12 and the upper tooth ring 13 to rotate through the gear 11. If the workpiece falls during the processing, when the workpiece falls on the buffer pad 25, the buffer plate 23 will slide up and down between the support columns 2. At the same time, the fixed block 24 drives the slider 29 to slide left and right on the slide rod 28 under the elastic potential energy of the third spring 38 to buffer the workpiece.

[0029] Embodiment 2:

[0030] Please refer to Figures 1-6 , the present invention provides a technical solution:

[0031] A device for realizing the lifting and turning of large workpieces, including a base 1. At both ends of the outer side of the base 1, support columns 2 are fixedly connected. Inside the support columns 2, threaded rods 3 are arranged. At both ends of the threaded rod 3, rotating blocks 4 are fixedly connected. The outer sides of the rotating blocks 4 are rotationally connected to the support columns 2. Specifically, grooves are opened at the top and bottom ends inside the support columns 2, and the rotating blocks 4 are located inside the grooves; or the top and bottom ends inside the support columns 2 are respectively connected to the rotating blocks 4 at both ends of the threaded rod 3 through rotating connectors such as bearings. A threaded sleeve 5 is sleeved on the outer side of the threaded rod 3. One end of a support rod 6 and a fixing plate 7 are fixedly connected to the outer side of the threaded sleeve 5. A first motor 8 is fixedly connected to the left end face of the fixing plate 7. The connecting part of the first motor 8 and the fixing plate 7 can move up and down along the support column 2. The end of the main shaft of the first motor 8 is fixedly connected to a first worm 9. A first worm gear 10 is meshed on the outer side of the first worm 9. A gear 11 is fixedly connected to the outer side of the first worm gear 10. A toothed ring is meshed on the outer side of the gear 11. The toothed ring is composed of a lower toothed ring 12 and an upper toothed ring 13. One end of the lower toothed ring 12 is hinged to one end of the upper toothed ring 13, and the other end of the lower toothed ring 12 is detachably connected to the other end of the upper toothed ring 13. Sliding grooves 14 are opened on the inner sides of the lower toothed ring 12 and the upper toothed ring 13. The other end of the support rod 6 extends out of the support column 2 and is slidably connected to the sliding groove 14, and the support rod 6 can move up and down along the support column 2. A through groove for supporting the up and down sliding of the support rod 6 and the fixed rod 7 is opened on the support column 2. In this way, the self-locking and deceleration functions between the first worm 9 and the first worm gear 10 can be used to adjust the workpiece inside the upper toothed ring 13 and the lower toothed ring 12 to any angle as needed, so as to solve the problem that the existing turning devices can generally only turn at 90 degrees or 180 degrees, and has good popularization value. Limiting blocks 15 are fixedly connected to the inner sides of the lower toothed ring 12 and the upper toothed ring 13. A limiting groove 16 is opened at one end of the limiting block 15 facing the centers of the upper toothed ring 12 and the lower toothed ring 13. One end of a first spring 17 is fixedly connected to the inner side of the limiting groove 16. The other end of the first spring 17 is fixedly connected to one end of a telescopic block 18. Part of the telescopic block 18 is located inside the limiting groove 16. The other end of the telescopic block 18 is fixedly connected to an anti-slip block 19. In this way, it is convenient to fix the square workpiece. A through hole 39 is opened on the side wall of the limiting block 15, and the through hole 39 penetrates into the limiting groove 16. A set screw 36 is screwed in the through hole 39. One end of the set screw 36 is in contact with the telescopic block 18, and the other end of the set screw 36 is fixedly connected to a turning handle 37. The number of the limiting blocks 15, the first springs 17 and the telescopic blocks 18 is 4 each. The limiting blocks 15, the first springs 17 and the telescopic blocks 18 are evenly arranged on the inner sides of the lower toothed ring 12 and the upper toothed ring 13. In this way, the force on the workpiece can be more balanced. A second motor 20 is fixedly connected to the lower side of the right end face of the right support column 2. The end of the main shaft of the second motor 20 is fixedly connected to a second worm 21. The second worm 21 extends into the support column 2. A second worm gear 22 is meshed on the outer side of the second worm 21 inside the support column 2.The inner side of the second worm gear 22 is fixedly connected to the outer side of the lower part of the threaded rod 3. In this way, the self-locking of the second worm 21 and the second worm gear 22 can be utilized to enable the workpiece to achieve self-locking during the process of height lifting, so as to solve the problem of needing to additionally install an anti-falling device during the processing, reducing the production expenditure of the enterprise. A buffer plate 23 is slidably connected between the two support columns 2. The buffer plate 23 slides up and down along the support column 2. A fixed block 24 is fixedly connected to the lower end surface of the buffer plate 23. A support block 27 is fixedly connected to the upper end surface of the base 1. A slide rod 28 is fixedly connected between the support blocks 27. Two sliders 29 are slidably connected to the outer side of the slide rod 28. A third spring 38 is arranged between the two sliders 29. The third spring 38 is sleeved on the outer side of the slide rod 28 and is fixedly connected to the two sliders 29 at both ends respectively. One end of a connecting rod 30 is rotatably connected to the inner side of the slider 29 through a rotating shaft, and the other end of the connecting rod 30 is rotatably connected to the fixed block 24 through a rotating shaft. A buffer pad 25 is fixedly connected to the upper end surface of the buffer plate 23. A groove 26 is formed in the upper part of the buffer pad 25. The shape of the groove 26 is hemispherical. The buffer plate 23 and the support column 2 are connected through a sliding device, such as a ball structure. In this way, the elastic potential energy of the buffer pad 25 and the third spring 38 can be utilized to effectively buffer the impact force of the falling workpiece, so as to solve the problem of personal injury accidents occurring during the falling process of the workpiece and improve the safety performance of the overall device. The right inner side of the upper tooth ring 13 is rotatably connected to a first clamping rod 31 through a rotating shaft. One end of a second spring 32 is fixedly connected to the right inner side of the upper tooth ring 13, and the other end of the second spring 32 is fixedly connected to the first clamping rod 31. A second clamping rod 33 is fixedly connected to the right inner side of the lower tooth ring 12. The second clamping rod 33 is engaged with the first clamping rod 31. In this way, the convenient engagement and disengagement of the first clamping rod 31 and the second clamping rod 33 can be utilized to make the installation and disassembly of the overall device more convenient and improve the practical performance of the overall device. A handle 34 is fixedly connected to the outer side of the first clamping rod 31, and a handle sleeve 35 is fixedly connected to the outer side of the handle 34, making the overall device more reasonable.

[0032] Workflow: Each component is connected to an external power supply when electricity is needed. When a large square workpiece needs to be processed, first hold the handle sleeve 35 and pull the handle 34. At this time, the first latch 31 disengages from the second latch 33. Then place the square workpiece on the 4 anti-slip blocks 19 provided on the lower tooth ring 12. Subsequently, lower the upper tooth ring 13. The first latch 31 will engage with the second latch 33 under the action of the gravitational potential energy of the upper tooth ring 13 and the elastic potential energy of the second spring 32. Then tighten the set bolt 36. If the height of the workpiece needs to be adjusted, start the second motor 20. The second motor 20 drives the second worm 21 to rotate, thereby meshing the second worm gear 22 to rotate, and then driving the threaded rod 3 to rotate, so that the support rod 6 can move up and down. When the processing angle of the workpiece needs to be adjusted, turn on the first motor 8. The first motor 8 drives the first worm 9 to rotate, thereby driving the first worm gear 10 to rotate, and then driving the lower tooth ring 12 and the upper tooth ring 13 to rotate through the gear 11. If the workpiece drops during the processing, when the workpiece drops on the buffer pad 25, the buffer plate 23 will slide up and down between the support columns 2. At the same time, the fixed block 24 drives the slider 29 to slide left and right on the slide rod 28 under the elastic potential energy of the third spring 38 to buffer the workpiece.

[0033] In this article, specific examples are used to elaborate on the principles and implementation methods of the present invention. The description of the above examples is only used to help understand the method of the present invention and its core idea. The above is only the preferred implementation method of the present invention. It should be noted that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.

Claims

1. An apparatus for realizing the lifting and flipping of large workpieces, comprising a base (1), characterized in that: Both outer ends of the base (1) are fixedly connected with support columns (2). A threaded rod (3) is arranged inside the support columns (2). Both ends of the threaded rod (3) are fixedly connected with rotating blocks (4). The outer sides of the rotating blocks (4) are rotatably connected with the support columns (2). A threaded sleeve (5) is sleeved on the outer side of the threaded rod (3). One end of a support rod (6) and a fixing plate (7) are fixedly connected to the outer side of the threaded sleeve (5). The left end face of the fixing plate (7) is fixedly connected with a first motor (8). The connecting part of the first motor (8) and the fixing plate (7) can move up and down along the support column (2). The end of the main shaft of the first motor (8) is fixedly connected with a first worm (9). A first worm gear (10) is meshed with the outer side of the first worm (9). A gear (11) is fixedly connected to the outer side of the first worm gear (10). A toothed ring is meshed with the outer side of the gear (11). The toothed ring is composed of a lower toothed ring (12) and an upper toothed ring (13). One end of the lower toothed ring (12) is hinged to one end of the upper toothed ring (13). The other end of the lower toothed ring (12) is detachably connected to the other end of the upper toothed ring (13). Sliding grooves (14) are formed inside both the lower toothed ring (12) and the upper toothed ring (13). The other end of the support rod (6) extends out of the support column (2) and is slidably connected with the sliding groove (14), and the support rod (6) can move up and down along the support column (2); Limit blocks (15) are fixedly connected to the inner sides of both the lower toothed ring (12) and the upper toothed ring (13). A limit groove (16) is formed at one end of the limit block (15) facing the centers of the upper toothed ring (13) and the lower toothed ring (12). One end of a first spring (17) is fixedly connected to the inner side of the limit groove (16). The other end of the first spring (17) is fixedly connected to one end of a telescopic block (18). Part of the telescopic block (18) is located inside the limit groove (16). The other end of the telescopic block (18) is fixedly connected with an anti-slip block (19); A through hole (39) is formed in the side wall of the limit block (15). The through hole (39) penetrates into the limit groove (16). A set screw (36) is screwed in the through hole (39). One end of the set screw (36) is in contact with the telescopic block (18). The other end of the set screw (36) is fixedly connected with a turning handle (37). The number of the limit blocks (15), the first springs (17) and the telescopic blocks (18) is 4 to 8. The limit blocks (15), the first springs (17) and the telescopic blocks (18) are evenly arranged on the inner sides of the lower toothed ring (12) and the upper toothed ring (13); A buffer plate (23) is slidably connected between the two support columns (2). The buffer plate (23) slides up and down along the support column (2). A fixed block (24) is fixedly connected to the lower end surface of the buffer plate (23). A support block (27) is fixedly connected to the upper end surface of the base (1). A slide bar (28) is fixedly connected between the support blocks (27). Two sliders (29) are slidably connected to the outer side of the slide bar (28). A third spring (38) is arranged between the two sliders (29). The third spring (38) is sleeved on the outer side of the slide bar (28) and is fixedly connected to the two sliders (29) at both ends. One end of a connecting rod (30) is rotatably connected to the inner side of the slider (29) through a rotating shaft. The other end of the connecting rod (30) is rotatably connected to the fixed block (24) through a rotating shaft.

2. The device for realizing the lifting and turning of large workpieces according to claim 1, wherein: A second motor (20) is fixedly connected to the lower side of the right end surface of the right support column (2). A second worm (21) is fixedly connected to the end of the main shaft of the second motor (20). The second worm (21) extends into the support column (2). A second worm gear (22) is meshed with the outer side of the second worm (21) inside the support column (2). The inner side of the second worm gear (22) is fixedly connected to the outer side of the lower part of the threaded rod (3).

3. The device for realizing the lifting and turning of large workpieces according to claim 1, characterized in that: A buffer pad (25) is fixedly connected to the upper end surface of the buffer plate (23). A groove (26) is formed in the upper part of the buffer pad (25). The shape of the groove (26) is hemispherical.

4. The device for realizing the lifting and turning of large workpieces according to claim 1, characterized in that: One end of a first clamping rod (31) is rotatably connected to the inner side of the right part of the upper tooth ring (13) through a rotating shaft. One end of a second spring (32) is fixedly connected to the inner side of the right part of the upper tooth ring (13). The other end of the second spring (32) is fixedly connected to the first clamping rod (31). A second clamping rod (33) is fixedly connected to the inner side of the right part of the lower tooth ring (12). The second clamping rod (33) is clamped with the first clamping rod (31).

5. The device for realizing the lifting and turning of large workpieces according to claim 4, characterized in that: A handle (34) is fixedly connected to the outer side of the first clamping rod (31). A handle sleeve (35) is fixedly connected to the outer side of the handle (34).

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