Sliding sleeve self-locking type three-jaw lifting appliance for lifting flange

Abstract

The sliding sleeve self-locking type three-jaw lifting appliance comprises a suspension mechanism and a clamping mechanism, the suspension mechanism comprises an outer pipe and a flange plate, a lifting ring is arranged on the outer pipe, connecting plates are arranged on the periphery of the outer pipe, an inner shaft is arranged in the outer pipe in a penetrating mode, the inner shaft is arranged in a through hole of the flange plate in a penetrating mode, and a taper sleeve, a sliding sleeve and a shaft sleeve are arranged on the periphery of the inner shaft. The taper sleeve is arranged below the flange plate, the sliding sleeve comprises a taper head, an inverted-cone-shaped boss and a cylindrical bottom, a hook is arranged on the connecting plate, the top of the hook is connected with the connecting plate through a bolt, a hook body of the hook is clamped outside the sliding sleeve, and a fixing mechanism is arranged at the bottom end of the inner shaft. The clamping mechanism comprises three supporting arms and a supporting claw, the supporting arms are arranged on the periphery of the shaft sleeve, pin holes are formed in the supporting arms, the supporting claw is of an L-shaped structure, a connecting hole matched with the pin holes is formed in the middle of the supporting claw, a chain is arranged between the supporting claw and the connecting plate, and sawteeth are arranged at the other end of the supporting claw. When the high-temperature flange is transported by the hoisting device, the deformation of the flange in the manufacturing process can be reduced to the minimum, so that the overall quality of a wind power tower drum is effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power flange hanger tooling, and in particular relates to a sliding sleeve self-locking three-claw hanger for hanging flanges. Background Art

[0002] Wind turbine flanges are large annular parts with a diameter of Φ1000-Φ8000. They are important and indispensable connectors for wind turbine towers. They need to go through multiple processes during the production process, so internal transportation, loading and unloading are inevitable. Conventional transportation and loading and unloading are all carried out manually by hanging wire ropes, slings or forklifts, which have the following disadvantages: (1) The use of wire ropes for lifting is likely to cause scratches on the flange surface, and manual hanging of ropes in high-temperature areas poses a greater safety risk and heat radiation damage; (2) The use of slings for transportation is prone to slipping, easy to burn out under high temperature conditions, and cannot be effectively fixed; (3) The use of forklifts for transportation requires a large amount of labor and equipment costs. If there are problems such as small workshop space, it will bring certain difficulties to the transportation work. Since large flange blanks and finished products are heavy and large in size, ordinary hoists cannot guarantee personal safety, product safety and quality during transportation, and the transportation efficiency is low. Utility Model Content

[0003] The utility model aims to provide a sliding sleeve self-locking three-claw lifting device for lifting flanges, so as to solve the problems of low operating efficiency, great safety risks and high labor intensity of workers in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A sliding sleeve self-locking three-claw lifting device for lifting flanges, comprising a hanging mechanism and a clamping mechanism, wherein the hanging mechanism comprises an outer tube and a flange plate arranged at the bottom end of the outer tube, a hanging ring is arranged on the upper part of the outer tube, three connecting plates are evenly arranged radially on the outer circumference of the outer tube, an inner shaft is passed through the inner tube, the inner shaft is passed through the through hole of the flange plate, a cone sleeve, a sliding sleeve and a shaft sleeve are arranged on the outer circumference of the inner shaft from top to bottom, the cone sleeve is arranged below the flange plate, and the sliding sleeve comprises a conical head, an inverted conical boss and a cylindrical bottom in sequence from top to bottom , hooks are respectively arranged on the connecting plates, bolts are arranged between the top of the hook and the connecting plate, the hook body of the hook is clamped on the outside of the sliding sleeve, and a fixing mechanism is arranged at the bottom end of the inner shaft; the clamping mechanism includes a support arm and a support claw, the support arm includes three, which are radially and evenly arranged on the outer periphery of the sleeve, and a number of pin holes are evenly arranged on the support arm. The support claw is an L-shaped structure, and a connecting hole matching the pin hole is arranged in the middle of the support claw. A chain connection is arranged between one end of the support claw and the connecting plate, and a sawtooth is arranged on the working side of the other end of the support claw.

[0006] In order to further realize the utility model, a fixed disc is arranged on the bottom surface of the support arm, the inner shaft is passed through the center of the fixed disc, and the fixing mechanism is closely fitted with the bottom surface of the fixed disc. Welding the fixed disc at the bottom of the three support arms can increase the strength of the support arms.

[0007] In order to further realize the utility model, three flanges are evenly arranged radially on the outer periphery of the flange, a U-shaped groove is arranged in the center of the flange, and the hook is inserted into the U-shaped groove. The axes of the connecting plate, the U-shaped groove, the support arm, the chain and the support claw in the same direction are on the same plane. The U-shaped groove is designed to facilitate the hook to pass through it.

[0008] In order to further realize the utility model, the outer diameter of the top surface of the inverted conical boss is larger than the bottom surface diameter of the conical head, and the outer diameter of the cylindrical bottom is smaller than the bottom surface diameter of the conical head.

[0009] In order to further realize the utility model, a conical groove matching with the conical head is arranged at the bottom of the conical sleeve, and the top end of the conical head is inserted into the conical groove.

[0010] In order to further realize the utility model, a T-shaped reinforcement plate is arranged between two adjacent bracing arms, the T-shaped reinforcement plate comprises a horizontal plate and a vertical plate arranged vertically in the center of the horizontal plate, the two ends of the horizontal plate are respectively fixedly connected to the side walls of the bracing arm, and the bottom surface of the vertical plate is fixedly connected to the top surface of the fixed disc. The T-shaped reinforcement plate can further improve the strength and stability of the bracing arm.

[0011] In order to further realize the utility model, the fixing mechanism includes a thin nut and a nut in sequence from top to bottom.

[0012] In order to further realize the utility model, a slot is arranged at the top end of the hook, and the connecting plate is arranged in the slot.

[0013] In order to further realize the utility model, a bolt connection is arranged between the chain and the connecting plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The inner shaft in the utility model is passed through the outer tube to play a guiding role; the hook is used in conjunction with the cone sleeve and the sliding sleeve, that is, it slides on the cone sleeve and the sliding sleeve to play the role of automatic hooking and disengagement of the hook head; the pin hole on the support arm is convenient for adjusting the support claw distance according to the flange diameter, so as to realize the function of adjustable flange clamping diameter range; the working side of the support claw is designed with serrations to increase the friction between the support claw and the inner wall of the flange.

[0016] The utility model combines the principles of internal support type sling and self-unloading type sling to realize the functions of automatic clamping and automatic loosening of slinging. The slinging flange is safe and stable with strong clamping force.

[0017] The clamping diameter range of the utility model is adjustable, and the flange within the diameter range of 2m-5m can be clamped. It is not only smart in structure, simple and labor-saving in operation, and convenient to use, but also has high hoisting efficiency, safety and reliability, and is easy to repair and replace, and has obvious practicality.

[0018] By using the utility model to transport the high-temperature flange, the deformation of the flange during the manufacturing process can be reduced to a minimum, thereby effectively ensuring the overall quality of the wind power tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 for Figure 1 A top view of (not showing the claws);

[0021] Figure 3 This is a schematic diagram of the structure of the lifting ring, outer tube, connecting plate and flange in the utility model;

[0022] Figure 4 for Figure 3 AA map in;

[0023] Figure 5 It is a structural schematic diagram of the outer tube, inner shaft, connecting plate, hook, flange and sleeve in the utility model, as well as a cross-sectional view of the cone sleeve and the sliding sleeve;

[0024] Figure 6 This is a schematic diagram of the structure of the middle support claw of the utility model;

[0025] The meanings of the accompanying numbers are as follows: 1. Outer tube; 2. Flange; 3. Lifting ring; 4. Connecting plate; 5. Inner shaft; 6. Taper sleeve; 6-1. Taper groove; 7. Sliding sleeve; 7-1. Taper head; 7-2. Inverted tapered boss; 7-3. Cylindrical bottom; 8. Bushing; 9. Hook; 10. Bolt; 11. Fixing mechanism; 12. Support arm; 13. Support claw; 14. Pin hole; 15. Connecting hole; 16. Chain; 17. Sawtooth; 18. Fixed disc; 19. Flange; 20. U-shaped groove; 21. T-shaped reinforcement plate; 21-1. Horizontal plate; 21-2. Vertical plate. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figure 1-6As shown, a sliding sleeve self-locking three-claw lifting device for lifting flanges includes a hanging mechanism and a clamping mechanism, wherein the hanging mechanism includes an outer tube 1 and a flange 2 arranged at the bottom end of the outer tube 1, a hanging ring 3 is arranged on the upper part of the outer tube 1, and three connecting plates 4 are evenly arranged radially on the outer periphery of the outer tube 1, an inner shaft 5 is passed through the inner tube 1, and the inner shaft 5 is passed through the through hole of the flange 2, and a cone sleeve 6, a sliding sleeve 7 and a shaft sleeve 8 are arranged on the outer periphery of the inner shaft 5 from top to bottom, the cone sleeve 6 is arranged below the flange 2, and the sliding sleeve 7 includes a conical head 7-1, an inverted conical boss 7-2 and a cylindrical bottom 7-3 in sequence from top to bottom, and the inverted conical boss 7- The outer diameter of the top surface of the conical head 7-1 is larger than the bottom diameter of the conical head 7-1, and the outer diameter of the cylindrical bottom 7-3 is smaller than the bottom diameter of the conical head 7-1. The bottom of the conical sleeve 6 is provided with a conical groove 6-1 matched with the conical head 7-1, and the top of the conical head 7-1 is penetrated in the conical groove 6-1. Hooks 9 are respectively provided on the connecting plates 4, and a slot is provided at the top of the hook 9. The connecting plate 4 is clamped in the slot. Bolts 10 are provided between the top of the hook 9 and the connecting plate 4. The hook body of the hook 9 is clamped on the outside of the sliding sleeve 7. The outer periphery of the flange 2 is radially and evenly provided with three flanges 19. The center of the flange 19 is provided with a U-shaped groove 20. The hook 9 is passed through the U-shaped groove 20, and a fixing mechanism 11 is set at the bottom end of the inner shaft 5; the clamping mechanism includes a support arm 12 and a support claw 13, the support arm 12 includes three, which are radially and evenly arranged on the outer periphery of the sleeve 8, and a fixed disc 18 is set on the bottom surface of the support arm 12. The inner shaft 5 is passed through the center of the fixed disc 18. The fixing mechanism 11 is tightly fitted with the bottom surface of the fixed disc 18. The fixing mechanism 11 includes a thin nut and a nut in sequence from top to bottom. A T-shaped reinforcement plate 21 is set between two adjacent support arms 12, and the T-shaped reinforcement plate 21 includes a horizontal plate 21-1 and a vertical plate 21-1 vertically arranged in the center of the horizontal plate 21-1. 2, the two ends of the horizontal plate 21-1 are fixedly connected to the side walls of the support arm 12, the bottom surface of the vertical plate 21-2 is fixedly connected to the top surface of the fixed disc 18, a plurality of pin holes 14 are evenly arranged on the support arm 12, the support claw 13 is an L-shaped structure, and a connecting hole 15 matching the pin hole 14 is arranged in the middle of the support claw 13, a chain 16 is arranged between one end of the support claw 13 and the connecting plate 4, a bolt 10 is arranged between the chain 16 and the connecting plate 4, a sawtooth 17 is arranged on the working side of the other end of the support claw 13, and the axes of the connecting plate 4, the U-shaped groove 20, the support arm 12, the chain 16 and the support claw 13 in the same direction are on the same plane.

[0028] Before the operation, hang the U-shaped lifting ring 3 of the lifting device on the hook of the lifting equipment, move it with the lifting equipment to the top of the flange to be lifted, adjust the distance between the three claws 13 according to the size of the flange, and the lifting device will fall into the inner wall of the flange to lift the utility model. The claws 13 will expand from the inside to fix the flange, and the hook 9 will slide up and down on the cone sleeve 6 and the sliding sleeve 7 to drive the claws 13 to be tightened or loosened, so as to achieve the purpose of automatically lifting the flange.

Claims

1. A sliding sleeve self-locking three-claw lifting device for lifting flange, characterized in that: The invention comprises a suspension mechanism and a clamping mechanism, wherein the suspension mechanism comprises an outer tube (1) and a flange (2) arranged at the bottom end of the outer tube (1), a suspension ring (3) is arranged on the upper part of the outer tube (1), three connecting plates (4) are evenly arranged on the outer circumference of the outer tube (1) in a radial shape, an inner shaft (5) is passed through the inner part of the outer tube (1), the inner shaft (5) is passed through the through hole of the flange (2), a cone sleeve (6), a sliding sleeve (7) and a shaft sleeve (8) are arranged on the outer circumference of the inner shaft (5) from top to bottom, the cone sleeve (6) is arranged below the flange (2), the sliding sleeve (7) comprises a cone head (7-1), an inverted cone boss (7-2) and a cylindrical bottom (7-3) in sequence from top to bottom, hooks (9) are respectively arranged on the connecting plates (4), A bolt (10) is arranged between the top of the hook (9) and the connecting plate (4), the hook body of the hook (9) is clamped on the outside of the sliding sleeve (7), and a fixing mechanism (11) is arranged at the bottom end of the inner shaft (5); the clamping mechanism comprises a support arm (12) and a support claw (13), the support arm (12) comprises three, which are radially and evenly arranged on the outer periphery of the shaft sleeve (8), a plurality of pin holes (14) are evenly arranged on the support arm (12), the support claw (13) is an L-shaped structure, a connecting hole (15) matching with the pin hole (14) is arranged in the middle of the support claw (13), a chain (16) is arranged between one end of the support claw (13) and the connecting plate (4) for connection, and a sawtooth (17) is arranged on the working side of the other end of the support claw (13).

2. The sliding sleeve self-locking three-claw lifting device for lifting flange according to claim 1, characterized in that: A fixed disc (18) is arranged on the bottom surface of the support arm (12), the inner shaft (5) is passed through the center of the fixed disc (18), and the fixing mechanism (11) is tightly fitted to the bottom surface of the fixed disc (18).

3. The sliding sleeve self-locking three-claw lifting device for lifting flange according to claim 1 or 2, characterized in that: The outer periphery of the flange (2) is evenly and radially provided with three flanges (19), the center of the flange (19) is provided with a U-shaped groove (20), the hook (9) is inserted into the U-shaped groove (20), and the axes of the connecting plate (4), the U-shaped groove (20), the support arm (12), the chain (16) and the support claw (13) in the same direction are on the same plane.

4. The sliding sleeve self-locking three-claw lifting device for lifting flange according to claim 3, characterized in that: The outer diameter of the top surface of the inverted conical boss (7-2) is greater than the bottom surface diameter of the conical head (7-1), and the outer diameter of the cylindrical bottom (7-3) is smaller than the bottom surface diameter of the conical head (7-1).

5. The sliding sleeve self-locking three-claw lifting device for lifting flange according to claim 4, characterized in that: A conical groove (6-1) matching with the conical head (7-1) is arranged at the bottom of the conical sleeve (6), and the top end of the conical head (7-1) is inserted into the conical groove (6-1).

6. The sliding sleeve self-locking three-claw lifting device for lifting flange according to claim 1, characterized in that: A T-shaped reinforcing plate (21) is arranged between two adjacent support arms (12), the T-shaped reinforcing plate (21) comprising a transverse plate (21-1) and a vertical plate (21-2) arranged vertically in the center of the transverse plate (21-1), the two ends of the transverse plate (21-1) are respectively fixedly connected to the side walls of the support arms (12), and the bottom surface of the vertical plate (21-2) is fixedly connected to the top surface of the fixed disc (18).

7. The sliding sleeve self-locking three-claw lifting device for lifting flange according to claim 6, characterized in that: The fixing mechanism (11) comprises a thin nut and a nut in sequence from top to bottom.

8. The sliding sleeve self-locking three-claw lifting device for lifting flange according to claim 7, characterized in that: A slot is provided at the top end of the hook (9), and the connecting plate (4) is locked in the slot.

9. The sliding sleeve self-locking three-claw lifting device for lifting flange according to claim 8, characterized in that: Bolts (10) are provided between the chain (16) and the connecting plate (4) for connection.

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