A lifting device for special equipment manufacturing

Abstract

The present invention relates to the field of lifting technology, and specifically to a lifting device for special equipment manufacturing, comprising: a center column, a lifting ring is fixed on the top of the center column; an extension rod, a lifting rope is fixed on the bottom of the extension rod, a second lifting head is arranged at the bottom of the lifting rope, a twisting rod is screwed on the bottom of the center column, a supporting block is arranged at the bottom of the twisting rod, a rotating rod is arranged on the surface of the supporting block, a lifting ring is arranged on the surface of the twisting rod, and the end of the lifting ring is connected to the surface of the extension rod; a first lifting head is arranged at the top of the lifting ring; the beneficial effect is: a lifting ring is hung at the bottom of the first lifting head, a center column is arranged at the bottom of the lifting ring, an extension rod is hinged to the bottom of the center column through a rotating shaft, four groups of extension rods are arranged, the equipment is fixed on the surface of the second lifting head at the bottom of the lifting rope, the equipment is fixed by four points, when the equipment is lifted, the equipment will not shake greatly, ensuring that the equipment will not be damaged.

Description

Technical Field

[0001] The invention relates to the technical field of lifting, in particular to a lifting device used for manufacturing special equipment. Background Art

[0002] Special equipment refers to boilers, pressure vessels (including gas cylinders, the same below), pressure pipelines, elevators, lifting machinery, passenger ropeways, large amusement facilities and special motor vehicles within the site (factory) that involve life safety and are relatively dangerous. During the assembly of the boiler, a lifting device is required to lift its parts to reduce labor consumption;

[0003] In the prior art, patent CN116986451A provides a lifting device for special equipment manufacturing, which relates to the technical field of lifting devices, including: a sling seat, a lubrication part, and a blocking part; the sling seat is fixedly connected to a rotating seat by four bolts, and a roller is rotatably connected to the rotating seat. When the hook rotates and resets to contact the stopper, the stopper is in a downward state under the extrusion force of the hook, and the bottom end surface of the baffle is in contact with the top end surface of the fixing bolt on the rotating seat. If the fixing bolt on the rotating seat is loosened during this process, the hook will not be able to continue to rotate, which solves the problem that the bolts used for tightening on the lifting device are prone to loosening after being used for a period of time, and the staff cannot find it in the first time, which is easy to cause safety accidents; the rotating shaft of the roller on the lifting device used to connect with the wire rope needs to be oiled regularly, and the staff is prone to negligence during actual use, which leads to premature aging of the rotating shaft and causes safety accidents;

[0004] However, when lifting the equipment, the existing lifting device needs to tie the equipment with ropes and then connect the ends of the ropes to the lifting device. The lifting device cannot ensure the stability of the equipment when lifting the equipment. The force points of the ropes are concentrated in one position, which causes the equipment to shake easily during the lifting process and may cause damage to the equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a lifting device for special equipment manufacturing to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a lifting device for special equipment manufacturing, comprising:

[0007] A center column, the top of which is fixed with a lifting ring;

[0008] An extension rod, a lifting rope is fixed at the bottom of the extension rod, a second lifting head is arranged at the bottom of the lifting rope, a screw rod is screwed at the bottom of the central column, a supporting block is arranged at the bottom of the screw rod, a rotating rod is arranged on the surface of the supporting block, a lifting ring is arranged on the surface of the screw rod, and the end of the lifting ring is connected to the surface of the extension rod;

[0009] The first lifting head is located at the top of the lifting ring.

[0010] Preferably, the extension rods are provided with four groups, the ends of the extension rods are hinged on the surface of the central column through a rotating shaft, and the extension rods can swing through the rotating shaft, two groups of supporting blocks are fixed on the surface of the screwing rod, and the surfaces of the supporting blocks are hinged with rotating rods through the rotating shaft, and the rotating rods can swing along the rotating shaft. After the rotating rods swing, they are vertical to the screwing rods, and a sleeve ring is sleeved on the surface of the screwing rod, and the sleeve ring can move on the surface of the screwing rod.

[0011] Preferably, a force-bearing rod is fixed to the surface of the sleeve ring, and the force-bearing rod moves with the sleeve ring. A holding plate is fixed to the end of the force-bearing rod, and a limit strip is arranged on the surface of the holding plate. A first spring is connected to the surface of the sleeve ring, and the first spring has a pulling force on the sleeve ring. The rotating rod pulls the sleeve ring toward the direction of the center column, and a force-bearing plate is fixed to the surface of the extension rod, and the holding plate is held on the surface of the force-bearing plate after the sleeve ring moves.

[0012] Preferably, a vertical rod is fixed to the surface of the force-bearing rod, a clamping ring is fixed to the bottom of the vertical rod, a swing rod is hinged to the bottom of the clamping ring through a rotating shaft, the swing rod can swing along the rotating shaft, a rubber pad is provided on the inner wall of the clamping ring, an extension block is fixed to the surface of the swing rod, a groove is provided on the surface of the extension block, a supporting block is inserted in the groove, the supporting block can move in the groove, and a second spring is provided in the groove, one end of the second spring is connected to the surface of the supporting block, and the other end is connected to the inner wall of the groove.

[0013] Preferably, a telescopic rod is inserted into the end of the swing rod, a clamping plate is fixed to the end of the telescopic rod, the surface of the telescopic rod is connected to the top holding block, the top holding block moves with the telescopic rod, a lifting ring is sleeved on the surface of the screwing rod, two groups of limit rings are fixed on the surface of the screwing rod, the limit rings are located at both ends of the lifting ring, the lifting ring is lifted and lowered with the screwing rod, and the surface of the lifting ring is hinged with a support rod through a rotating shaft, the other end of the support rod is hinged to the surface of the extension rod through the rotating shaft, and a limiting groove is provided on the surface of the support rod.

[0014] Preferably, the clamping plate is held in the limiting groove on the surface of the support rod as the swing rod swings, an extension ring is provided at the bottom of the sleeve ring, a thread is provided on the surface of the extension ring, a screw connection ring is screwed on the surface of the extension ring, a rotating ring is inserted at the bottom of the screw connection ring, the rotating ring can rotate on the surface of the screw connection ring, and the cross-section of the rotating ring is T-shaped.

[0015] Preferably, an L-shaped rod is fixed on the surface of the rotating ring. The L-shaped rod moves up and down with the rotating ring. A sleeve tube is fixed at the end of the L-shaped rod. A transverse moving rod is inserted into the sleeve tube. The transverse moving rod can move inside the sleeve tube. A holding ring and a U-shaped plate are fixed at both ends of the transverse moving rod. The holding ring moves with the transverse moving rod and then holds against the surface of the screwing rod.

[0016] Preferably, the U-shaped plate is located on the surface of the extension block, and the U-shaped plate can move up and down on the surface of the extension block. A holding block is fixed inside the U-shaped plate. When the holding block moves with the U-shaped plate, the holding block holds against the surface of the block to be held. After being held by the block to be held, the holding block moves, causing the U-shaped plate to move. The U-shaped plate drives the transverse moving rod to move, and the transverse moving rod drives the holding ring to move, so that the holding ring holds against the surface of the screwing rod.

[0017] Preferably, during the downward movement of the sleeve ring, the clamping ring moves downward with the sleeve ring. After the swing rod inside the clamping ring swings along the rotating shaft, the clamping ring is clamped on the surface of the support rod.

[0018] Preferably, when the swing rod and the vertical rod are in a vertical state, the clamping plate holds in the limiting groove on the surface of the support rod, and the second spring holds against the surface of the block to be held. The clamping plate moves with the block to be held, so that the clamping plate holds against the surface of the limiting groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] A lifting ring is suspended at the bottom of the first lifting head in the present invention. A central column is arranged at the bottom of the lifting ring. The bottom of the central column is hinged with an extension rod through a rotating shaft. Four groups of extension rods are provided. The equipment is fixed on the surface of the second lifting head at the bottom of the lifting rope. The equipment is fixed through four points. When the equipment is lifted, the equipment will not swing significantly, ensuring that the equipment will not be damaged. Moreover, the extension rod can swing along the rotating shaft. When adapting to lifting different equipment, it ensures that the second lifting head is directly above the lifting point of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 It is a structural schematic diagram of another perspective of the present invention.

[0023] Figure 3 It is a partial enlarged structural schematic diagram of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the sleeve ring and the screwing ring of the present invention.

[0025] Figure 5 For Figure 3A schematic diagram of the enlarged structure in the middle.

[0026] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0027] Figure 7 It is a schematic diagram of the sleeve ring structure of the present invention.

[0028] Figure 8 It is a schematic diagram of the screw-connected ring structure of the present invention.

[0029] Fig. 9 for Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0030] In the figure: a first lifting head 1, a lifting ring 2, a central column 3, an extension rod 4, a lifting rope 5, a second lifting head 6, a screw rod 7, a supporting block 8, a rotating rod 9, a top holding plate 10, a sleeve ring 11, a force rod 12, a limit strip 13, a vertical rod 14, a clamping ring 15, a swing rod 16, a screw ring 17, a force plate 18, a first spring 19, a lifting ring 20, a support rod 21, a limit groove 22, a limit ring 23, a rotating ring 24, a top holding ring 25, an L-shaped rod 26, a sleeve tube 27, a transverse rod 28, a top holding block 29, an L-shaped plate 30, an extension block 31, a telescopic rod 32, a clamping plate 33, a slot 34, a second spring 35, and a top holding block 36. DETAILED DESCRIPTION

[0031] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 9 , the present invention provides a technical solution:

[0033] Embodiment 1: A lifting device for special equipment manufacturing, comprising: a central column 3, a lifting ring 2 is fixed on the top of the central column 3; an extension rod 4, a lifting rope 5 is fixed on the bottom of the extension rod 4, a second lifting head 6 is arranged at the bottom of the lifting rope 5, a screw rod 7 is screwed on the bottom of the central column 3, a supporting block 8 is arranged at the bottom of the screw rod 7, a rotating rod 9 is arranged on the surface of the supporting block 8, a lifting ring 20 is arranged on the surface of the screw rod 7, and the end of the lifting ring 20 is connected to the surface of the extension rod 4; a first lifting head 1 is arranged at the top of the lifting ring 2, the bottom of the central column 3 is hinged with the extension rod 4 through a rotating shaft, the extension rod 4 is arranged in four groups, the equipment is fixed on the surface of the second lifting head 6 at the bottom of the lifting rope 5, and the equipment is fixed by four points. When the equipment is lifted, the equipment will not shake significantly.

[0034] Embodiment 2: Four groups of extension rods 4 are provided, and the ends of the extension rods 4 are hinged on the surface of the central column 3 through a rotating shaft, and the extension rods 4 can swing through the rotating shaft. Two groups of supporting blocks 8 are fixed on the surface of the screw rod 7, and the surface of the supporting block 8 is hinged with a rotating rod 9 through a rotating shaft. The rotating rod 9 can swing along the rotating shaft. After the rotating rod 9 swings, it is vertical to the screw rod 7. A sleeve ring 11 is sleeved on the surface of the screw rod 7, and the sleeve ring 11 can move on the surface of the screw rod 7 to clamp the clamping ring 15 on the surface of the support rod 21. After the adjustment is completed, the sleeve ring 11 is pushed up, and under the pull of the screw rod 7, the top holding plate 10 is supported on the surface of the force plate 18. When the extension rod 4 is lifted and subjected to force, the force plate 18 is supported on the surface of the top holding plate 10, and the force rod 12 shares the force of the support rod 21.

[0035] A force-bearing rod 12 is fixed to the surface of the sleeve ring 11, and the force-bearing rod 12 moves with the sleeve ring 11. A top holding plate 10 is fixed to the end of the force-bearing rod 12, and a limit strip 13 is arranged on the surface of the top holding plate 10. A first spring 19 is connected to the surface of the sleeve ring 11, and the first spring 19 has a pulling force on the sleeve ring 11. The rotating rod 9 pulls the sleeve ring 11 toward the direction of the center column 3. A force-bearing plate 18 is fixed to the surface of the extension rod 4, and the top holding plate 10 is held on the surface of the force-bearing plate 18 after moving with the sleeve ring 11, and the sleeve ring 11 is pushed up. Under the pulling of the screwing rod 7, the top holding plate 10 is held on the surface of the force-bearing plate 18. When the extension rod 4 is lifted and subjected to force, the force plate 18 is held on the surface of the top holding plate 10, and the force-bearing rod 12 shares the force of the support rod 21.

[0036] A vertical rod 14 is fixed to the surface of the force-bearing rod 12, and a clamping ring 15 is fixed to the bottom of the vertical rod 14. A swing rod 16 is hinged at the bottom of the clamping ring 15 through a rotating shaft, and the swing rod 16 can swing along the rotating shaft. A rubber pad is provided on the inner wall of the clamping ring 15, and an extension block 31 is fixed to the surface of the swing rod 16. A groove 34 is provided on the surface of the extension block 31, and a supporting block 36 is inserted in the groove 34. The supporting block 36 can move in the groove 34, and a second spring 35 is provided in the groove 34. One end of the second spring 35 is connected to the surface of the supporting block 36, and the other end is connected to the inner wall of the groove 34. The supporting block 29 is supported on the surface of the supporting block 36, so that the transverse rod 28 moves in the sleeve tube 27, so that the supporting ring 25 is supported on the surface of the screw rod 7, and the supporting block 36 is supported. The supporting block 36 is connected to the telescopic rod 32, so that the position of the telescopic rod 32 is stable.

[0037] Embodiment 3: A telescopic rod 32 is inserted into the end of the swing rod 16, and a clamping plate 33 is fixed to the end of the telescopic rod 32. The surface of the telescopic rod 32 is connected to the supporting block 36, and the supporting block 36 moves with the telescopic rod 32. A lifting ring 20 is sleeved on the surface of the screw rod 7, and two groups of limit rings 23 are fixed on the surface of the screw rod 7. The limit rings 23 are located at both ends of the lifting ring 20. The lifting ring 20 is lifted and lowered with the screw rod 7, and the surface of the lifting ring 20 is hinged with a support rod 21 through a rotating shaft. The other end of the support rod 21 is hinged to the surface of the extension rod 4 through a rotating shaft. A limiting groove 22 is provided on the surface of the support rod 21, and the clamping plate 33 is supported in the limiting groove 22 on the surface of the support rod 21, so that the position of the vertical rod 14 is stable, so that the supporting plate 10 is stably supported on the surface of the force-bearing plate 18, to prevent the first spring 19 from shaking and causing the supporting plate 10 to slide.

[0038] After the swing rod 16 swings, the clamping plate 33 is held in the limiting groove 22 on the surface of the support rod 21. An extension ring is provided at the bottom of the sleeve ring 11. The surface of the extension ring is provided with a thread. A screw ring 17 is screwed on the surface of the extension ring. A rotating ring 24 is inserted at the bottom of the screw ring 17. The rotating ring 24 can rotate on the surface of the screw ring 17, and the cross-section of the rotating ring 24 is T-shaped. The screw ring 17 is screwed, and the screw ring 17 drives the rotating ring 24 to descend. The rotating ring 24 drives the sleeve tube 27 to descend through the L-shaped rod 26. After the sleeve tube 27 descends, the top holding ring 25 is held on the surface of the screwing rod 7, and the L-shaped plate 30 is located on the surface of the extension block 31.

[0039] An L-shaped rod 26 is fixed to the surface of the rotating ring 24, and the L-shaped rod 26 rises and falls with the rotating ring 24. A sleeve tube 27 is fixed to the end of the L-shaped rod 26, and a transverse rod 28 is inserted into the sleeve tube 27. The transverse rod 28 can move inside the sleeve tube 27. A top holding ring 25 and a L-shaped plate 30 are fixed to both ends of the transverse rod 28. The top holding ring 25 is supported on the surface of the screw rod 7 after the transverse rod 28 moves. The transverse rod 28 moves in the sleeve tube 27, so that the top holding ring 25 is supported on the surface of the screw rod 7, and the support block 36 is supported. The support block 36 is connected to the telescopic rod 32, so that the position of the telescopic rod 32 is stable.

[0040] Embodiment 4: The molded plate 30 is located on the surface of the extension block 31, and the molded plate 30 can be raised and lowered on the surface of the extension block 31. A supporting block 29 is fixed inside the molded plate 30. When the supporting block 29 moves with the molded plate 30, the supporting block 29 is supported on the surface of the supported block 36. After being supported by the supported block 36, the supporting block 29 moves, so that the molded plate 30 moves. The molded plate 30 drives the transverse rod 28 to move, and the transverse rod 28 drives the supporting ring 25 to move, so that the supporting ring 25 is supported on the surface of the screw rod 7. After the sleeve tube 27 is lowered, the supporting ring 25 is supported on the surface of the screw rod 7. The molded plate 30 is located on the surface of the extension block 31.

[0041] As the sleeve ring 11 descends, the clamping ring 15 descends along with the sleeve ring 11. The swing rod 16 inside the clamping ring 15 swings along the rotating shaft, so that the clamping ring 15 is clamped on the surface of the support rod 21. The sleeve ring 11 is pulled down, and the swing rod 16 can swing out of the inside of the clamping ring 15 along the rotating shaft, so that the clamping ring 15 is clamped on the surface of the support rod 21.

[0042] When the swing arm 16 and the vertical rod 14 are in a vertical state, the clamping plate 33 is held in the limiting groove 22 on the surface of the support rod 21, and the second spring 35 is held on the surface of the supported block 36. The clamping plate 33 moves with the supported block 36, so that the clamping plate 33 is held on the surface of the limiting groove 22. The supported block 36 is connected to the telescopic rod 32, so that the position of the telescopic rod 32 is stable, thereby achieving the stability of the position of the clamping plate 33. The clamping plate 33 is held in the limiting groove 22 on the surface of the support rod 21, so that the position of the vertical rod 14 is stable.

[0043] A lifting ring 2 is suspended at the bottom of the first lifting head 1. A central column 3 is provided at the bottom of the lifting ring 2. The bottom of the central column 3 is hinged with an extension rod 4 through a rotating shaft. There are four groups of extension rods 4, which are fixed on the surface of the second lifting head 6 at the bottom of the lifting rope 5. The equipment is fixed through four points. When the equipment is lifted, the equipment will not shake significantly, ensuring that the equipment will not be damaged. And the extension rod 4 can swing along the rotating shaft. When adapting to different lifted equipment, ensure that the second lifting head 6 is directly above the lifting point of the equipment. Swing the rotating rod 9 along the rotating shaft, and the supporting block 8 supports the bottom of the rotating rod 9, making the rotating rod 9 perpendicular to the screwing rod 7. Rotate the screwing rod 7 through the rotating rod 9, so that the screwing rod 7 drives the lifting ring 20 to rise and fall through the limiting ring 23. The lifting ring 20 supports the extension rod 4 through the supporting rod 21, realizing the adjustment of the extension rod 4. When adjusting the extension rod 4, pull down the sleeved ring 11, and the swinging rod 16 can swing out of the inside of the clamping ring 15 along the rotating shaft. Clamp the clamping ring 15 on the surface of the supporting rod 21. After adjustment, push up the sleeved ring 11. Under the pull of the screwing rod 7, the holding plate 10 holds against the surface of the stress plate 18. When the extension rod 4 is stressed during lifting, the stress plate 18 holds against the surface of the holding plate 10, and the stress rod 12 shares the stress of the supporting rod 21. Rotate the screwed ring 17, and the screwed ring 17 drives the rotating ring 24 to descend. The rotating ring 24 drives the sleeved tube 27 to descend through the L-shaped rod 26. After the sleeved tube 27 descends, the holding ring 25 holds against the surface of the screwing rod 7. The C-shaped plate 30 is located on the surface of the extension block 31. When the C-shaped plate 30 descends on the surface of the extension block 31, the holding block 29 holds against the surface of the held block 36, making the transverse rod 28 move in the sleeved tube 27, so that the holding ring 25 holds against the surface of the screwing rod 7, and the held block 36 is held. The held block 36 is connected to the telescopic rod 32, making the position of the telescopic rod 32 stable, realizing the stable position of the clamping plate 33. The clamping plate 33 holds against the limiting groove 22 on the surface of the supporting rod 21, making the vertical rod 14 stable, so that the holding plate 10 stably holds against the surface of the stress plate 18, preventing the first spring 19 from shaking and causing the holding plate 10 to slide, ensuring the stable holding and stress on the stress plate 18. And the holding ring 25 holds against the surface of the screwing rod 7, which can prevent the screwing rod 7 from loosening.

[0044] Although the above describes the illustrative specific embodiments of the present application for the convenience of those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all application creations using the concept of the present application are within the scope of protection.

Claims

1. A lifting device for special equipment manufacturing, characterized in that: include: A central column (3), a lifting ring (2) being fixed on the top of the central column (3); An extension rod (4), a lifting rope (5) is fixed to the bottom of the extension rod (4), a second lifting head (6) is arranged at the bottom of the lifting rope (5), a screw rod (7) is screwed to the bottom of the central column (3), a supporting block (8) is arranged at the bottom of the screw rod (7), a rotating rod (9) is arranged on the surface of the supporting block (8), a lifting ring (20) is arranged on the surface of the screw rod (7), and the end of the lifting ring (20) is connected to the surface of the extension rod (4); The first lifting head (1) is arranged at the top of the lifting ring (2), and four groups of extension rods (4) are arranged. The ends of the extension rods (4) are hinged to the surface of the central column (3) through a rotating shaft, and the extension rods (4) can swing through the rotating shaft. Two groups of supporting blocks (8) are fixed on the surface of the screw rod (7). The surface of the supporting block (8) is hinged to a rotating rod (9) through a rotating shaft. The rotating rod (9) can swing along the rotating shaft. After the rotating rod (9) swings, it is in a vertical state with respect to the screw rod (7). The surface of the screw rod (7) is sleeved with a sleeve ring (11). The sleeve ring (11) can move on the surface of the screw rod (7). The surface of the sleeve ring (11) is fixed with a force rod (12). The force rod (12) moves with the sleeve ring (11), a top holding plate (10) is fixed to the end of the force rod (12), a limit strip (13) is arranged on the surface of the top holding plate (10), a first spring (19) is connected to the surface of the sleeve ring (11), the first spring (19) exerts a pulling force on the sleeve ring (11), the rotating rod (9) pulls the sleeve ring (11) in the direction of the central column (3), a force plate (18) is fixed to the surface of the extension rod (4), the top holding plate (10) moves with the sleeve ring (11) and is supported on the surface of the force plate (18), a vertical rod (14) is fixed to the surface of the force rod (12), and a clamping ring (15) is fixed to the bottom of the vertical rod (14). ), the bottom of the clamping ring (15) is hinged with a swing rod (16) through a rotating shaft, the swing rod (16) can swing along the rotating shaft, the inner wall of the clamping ring (15) is provided with a rubber pad, the surface of the swing rod (16) is fixed with an extension block (31), the surface of the extension block (31) is provided with a slot (34), a top holding block (36) is inserted in the slot (34), the top holding block (36) can move in the slot (34), and a second spring (35) is provided in the slot (34), one end of the second spring (35) is connected to the surface of the top holding block (36), and the other end is connected to the inner wall of the slot (34), and the end of the swing rod (16) is inserted with a telescopic rod (32 ), a clamping plate (33) is fixed at the end of the telescopic rod (32), the surface of the telescopic rod (32) is connected to the top holding block (36), the top holding block (36) moves with the telescopic rod (32), a lifting ring (20) is sleeved on the surface of the screw rod (7), two groups of limit rings (23) are fixed on the surface of the screw rod (7), the limit rings (23) are located at both ends of the lifting ring (20), the lifting ring (20) moves up and down with the screw rod (7), and the surface of the lifting ring (20) is hinged with a support rod (21) through a rotating shaft, the other end of the support rod (21) is hinged to the surface of the extension rod (4) through a rotating shaft, and a limit groove (22) is provided on the surface of the support rod (21).

2. A lifting device for special equipment manufacturing according to claim 1, characterized in that: The clamping plate (33) is supported in the limiting groove (22) on the surface of the support rod (21) as the swinging rod (16) swings. An extension ring is provided at the bottom of the sleeve ring (11). The surface of the extension ring is provided with a thread. A screw connection ring (17) is screwed on the surface of the extension ring. A rotating ring (24) is inserted at the bottom of the screw connection ring (17). The rotating ring (24) can rotate on the surface of the screw connection ring (17). The cross section of the rotating ring (24) is T-shaped.

3. A lifting device for special equipment manufacturing according to claim 2, characterized in that: An L-shaped rod (26) is fixed to the surface of the rotating ring (24). The L-shaped rod (26) is lifted and lowered along with the rotating ring (24). A sleeve tube (27) is fixed to the end of the L-shaped rod (26). A transverse rod (28) is inserted into the interior of the sleeve tube (27). The transverse rod (28) can move inside the sleeve tube (27). A top holding ring (25) and a shaped plate (30) are fixed to both ends of the transverse rod (28). The top holding ring (25) is held on the surface of the screw rod (7) after the transverse rod (28) moves.

4. A lifting device for special equipment manufacturing according to claim 3, characterized in that: The shaped plate (30) is located on the surface of the extension block (31), and the shaped plate (30) can be raised and lowered on the surface of the extension block (31). A supporting block (29) is fixed inside the shaped plate (30). When the supporting block (29) moves with the shaped plate (30), the supporting block (29) is supported on the surface of the supported block (36). After being supported by the supported block (36), the supporting block (29) moves, so that the shaped plate (30) moves, the shaped plate (30) drives the transverse rod (28) to move, and the transverse rod (28) drives the supporting ring (25) to move, so that the supporting ring (25) is supported on the surface of the screw rod (7).

5. A lifting device for special equipment manufacturing according to claim 4, characterized in that: During the descent of the sleeve ring (11), the clamping ring (15) descends along with the sleeve ring (11), and the swinging rod (16) inside the clamping ring (15) swings along the rotating shaft, so that the clamping ring (15) is clamped on the surface of the support rod (21).

6. A lifting device for special equipment manufacturing according to claim 5, characterized in that: When the swing rod (16) and the vertical rod (14) are in a vertical state, the clamping plate (33) is held in the limiting groove (22) on the surface of the support rod (21), and the second spring (35) is held on the surface of the supported block (36). The clamping plate (33) moves with the supported block (36), so that the clamping plate (33) is held on the surface of the limiting groove (22).

Images