A hoisting device special for assembling a steel pipe tower

Abstract

This utility model discloses a special hoisting device for assembling steel pipe towers, specifically relating to the field of steel pipe tower hoisting technology. The device includes a steel pipe tower with a hoisting section on its top surface. The hoisting section includes a hoisting frame and a lifting tool, which are detachably connected to both the steel pipe tower and the hoisting frame. The lifting tool includes a C-shaped main body and a first lifting ring, which is integrally connected to the upper end of the main body. The open end of the main body has fixed through holes, and two fixing screws are fitted into these holes. The fixing screws are threadedly connected to the fixing through holes. Reinforcing edges are integrally provided on both sides of the main body. This utility model uses the C-shaped lifting tool to cover the flange of the steel pipe tower, replacing the direct contact with the steel wire rope sleeve. This avoids the risk of steel wire rope breakage due to friction, eliminates the risk of contact wear, and ensures that the hoisting force is transmitted axially along the bolts, thus standardizing the force direction. The adjustable clamping components can be symmetrically distributed at the two lifting points of the flange on the steel pipe tower, eliminating the risk of overturning caused by single-point instability.

Description

Technical Field

[0001] This utility model belongs to the field of steel pipe tower hoisting technology, specifically relating to a special hoisting device for assembling steel pipe towers. Background Technology

[0002] Steel pipe towers are supporting structures for overhead power transmission lines, supporting conductors and lightning protection wires. The main components are made of steel pipes, while other components are lattice-type towers composed of steel pipes or structural steel. They ensure that the conductors meet distance requirements from the ground and ground features, and can withstand the loads of the conductors, lightning protection wires, and the tower itself, as well as external loads. Steel pipe towers consist of several steel pipe sections, with flanges typically installed at the ends of adjacent sections for secure connection. Construction is usually carried out using a sectional hoisting method.

[0003] When hoisting sections of steel pipe towers, ropes are typically used to wrap and secure the upper part of the sections. This method is inconvenient and lacks stability. When connecting adjacent sections, high-altitude operations are difficult, positioning is challenging, and construction efficiency is low. In the hoisting of transmission line steel pipe towers, the use of wire rope slings and shackles presents risks of breakage due to contact wear between the wire rope sling and the flange. Furthermore, the shackles, when connected to the flange, experience stress along the bolt direction, which does not conform to shackle usage specifications and poses a safety hazard of breaking from the bolt, easily leading to hoisting accidents. Specialized hoisting devices for steel pipe tower assembly can solve these hoisting hazards, ensure hoisting safety, and improve work efficiency.

[0004] Existing technologies disclose several patents for hoisting tools for steel pipe towers. Among them, utility model patent CN221084087U discloses a hoisting tool for steel pipe towers, including tower material, clamps, and lifting rings. The tower material is provided with connecting parts for hoisting, and the top of the connecting parts is symmetrically provided with fixing ears. The clamps are used to clamp the fixing ears, and the lifting rings are connected to the fixing ears. The clamps include booms and wire rings. There are two booms, which are hinged together at the middle to form a scissor-like structure. One end of the two booms is used to clamp the fixing ears, and the other end of the two booms is connected by wire rings. The lifting ring includes two parallel straight segments and an arc segment connecting the ends of the two straight segments on the same side. The length of the straight segments is greater than the chord length of the arc segment. One of the straight segments of the lifting ring has a notch, and the straight segment with the notch has threads, on which a nut is fitted. Although tightening the fixing lugs with lifting equipment solves the problem of easy stripping at the connection between the bottom nut and the external thread of the connecting rod, this solution still relies on shackle connections, which poses a high safety risk of breakage during lateral stress during hoisting. Utility Model Content

[0005] To overcome the problems of shackle breakage and accidents caused by existing technologies, and the high safety risks during hoisting, this utility model provides a special hoisting device for assembling steel pipe towers, as detailed below: A special hoisting device for assembling steel pipe towers includes a steel pipe tower, and a hoisting part is provided on the top surface of the steel pipe tower. The hoisting part includes a hoisting frame and a hoisting tool, and the hoisting tool is detachably connected to the steel pipe tower and the hoisting frame respectively. The lifting device includes a C-shaped main body and a first lifting ring. The main body covers the flange of the steel pipe tower. The first lifting ring is integrally connected to the upper end of the main body. The open end of the main body is fixedly provided with a fixing through hole. A fixing screw is fitted in the two fixing through holes. The fixing screw is threaded to the fixing through hole. The two edges of the main body are integrally provided with a reinforcing edge.

[0006] The above technical solution uses a C-shaped main body to directly cover the flange on the steel pipe tower, avoiding direct friction between the wire rope and the flange and eliminating the risk of wire rope wear and breakage in traditional hoisting. The fixing screw is fixed through the threaded connection to the through hole, so that the lifting tool fits tightly against the flange, the force is evenly distributed, and the shackle is prevented from breaking under lateral force. In addition, the one-piece molded lifting ring is directly connected to the lifting frame, eliminating the shackle assembly step and shortening the hoisting preparation time. The reinforced edge design enhances the deformation resistance of the main body and meets the requirements of high-load hoisting.

[0007] Furthermore, the lifting frame includes a horizontal bar hanger, a second lifting ring, and a vertical bar hanger fixedly connected to both ends of the horizontal bar hanger. The horizontal bar hanger is perpendicular to the vertical bar hanger. The second lifting ring is fixed to the upper end of the horizontal bar hanger. A sliding plate is provided close to the bottom of the horizontal bar hanger. Both ends of the sliding plate are fixedly connected to the inner side of the vertical bar hanger, and the sliding plate is parallel to the horizontal bar hanger. A clamping assembly is slidably sleeved on the sliding plate, and the clamping assembly is detachably connected to the first lifting ring.

[0008] The above technical solution forms a rigid frame with horizontal and vertical bars, and the sliding plate provides horizontal guidance to ensure symmetrical distribution of lifting points and improve lifting stability. The clamping components and lifting rings are detachably connected, supporting single or multiple lifting tool combinations to adapt to steel pipe towers of different tonnages. The sliding plate and clamping components allow for fine adjustment of the lateral position of the lifting tools to adapt to the size of flanges on different steel pipe towers, thus improving versatility.

[0009] Furthermore, a connecting block is provided in the middle of the crossbar hanger and the sliding plate, and the two ends of the connecting block are fixedly connected to the crossbar hanger and the sliding plate respectively.

[0010] Furthermore, the clamping assembly includes a first sliding frame and a second sliding frame slidably sleeved on both sides of the sliding plate. A bidirectional screw is provided below the sliding plate for adjusting the distance between the first sliding frame and the second sliding frame. The two ends of the bidirectional screw pass through the first sliding frame and the second sliding frame respectively and are rotatably connected to the inner side of the two vertical rod hangers. The bidirectional screw is rotatably connected to the first sliding frame and the second sliding frame and is arranged parallel to the sliding plate.

[0011] Furthermore, an adjustment section is provided in the middle of the bidirectional screw, and both ends of the bidirectional screw are rotatably connected to the vertical rod hanger through bearing seats, and the bearing seats are fixedly connected to the vertical rod hanger.

[0012] Furthermore, an installation groove is provided at one end of the first sliding frame and the second sliding frame near the steel pipe tower, and a connecting through hole is fixedly provided at the free end of both the first sliding frame and the second sliding frame. A connecting screw is provided in the connecting through hole and threaded with the connecting through hole. The connecting screw passes through the connecting through hole and the first lifting ring to connect the lifting device to the end of the installation groove.

[0013] Furthermore, each of the first and second sliding frames has a telescopic rod connected to the vertical rod hanger at the free end edge on the side furthest from each other.

[0014] Furthermore, one end of the telescopic rod is fixedly connected to the vertical rod hanger, and the other end is fixedly connected to the first sliding frame or the second sliding frame.

[0015] Furthermore, reinforcing ribs are provided on both sides of the first and second sliding frames near the connecting through hole.

[0016] In the above technical solution, reinforcing ribs are added at the key points of force transmission in the connecting through holes to prevent cracking after long-term use. This can prevent stress concentration failure, strengthen the stress concentration area, and prevent cracking around the through holes during hoisting. Especially for large-tonnage hoisting, this can extend the life of key load-bearing components and reduce maintenance costs.

[0017] The beneficial effects of adopting the technical solution of this utility model are as follows: (1) This utility model uses a C-type lifting device to cover the flange on the steel pipe tower, replacing the direct contact of the wire rope sleeve, avoiding the wire rope breakage accident caused by friction and eliminating the risk of contact wear; the fixing screw penetrates the bolt hole of the flange vertically, so that the lifting force is transmitted along the bolt axis, completely solving the safety hazard of the shackle being pulled apart by the lateral force, and standardizing the direction of force; the adjustable clamping assembly realizes a set of symmetrical lifting devices symmetrically distributed on the two lifting points of the flange, eliminating the risk of overturning caused by single-point instability.

[0018] (2) The bidirectional screw adjustment mechanism can be operated with one hand to adjust the distance between the two sliding frames simultaneously, which can quickly match different flange hole distances, reduce the time of traditional manual measurement and adjustment, and quickly adapt to different specifications; the installation slot guide and connecting screw through design realize the alignment and locking of the lifting device, solve the problem of repeated positioning in narrow spaces at high altitudes, and shorten the time of single installation; the lifting frame and the lifting device can be detached and connected, supporting a single set of lifting frame with multiple sets of lifting devices for flexible switching, without the need to repeatedly disassemble and assemble the main structure.

[0019] (3) The device has no steel wire rope wear and consumable parts, which can reduce maintenance costs. By changing the specifications of the lifting tools, it can cover most transmission steel pipe tower models. In addition, after installation, there is no need for operators to go to the top of the steel support to unhook. They only need to direct the lifting equipment to slowly lower the hook. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Fig. 1 This is a front view of a special hoisting device for assembling steel pipe towers according to this utility model; Fig. 2 This is a structural schematic diagram of a special hoisting device for assembling steel pipe towers according to this utility model; Fig. 3 This is a structural schematic diagram of a lifting device for steel pipe tower assembly according to this utility model; The components include: 1. Lifting frame; 2. Lifting device; 3. Main body; 4. First lifting ring; 5. Fixing screw; 6. Reinforcing edge; 7. Horizontal rod hanger; 8. Second lifting ring; 9. Vertical rod hanger; 10. Sliding plate; 11. Connecting block; 12. First sliding frame; 13. Second sliding frame; 14. Bidirectional screw; 15. Adjustment part; 16. Bearing seat; 17. Mounting groove; 18. Connecting screw; 19. Telescopic rod; 20. Reinforcing rib. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] This implementation method replaces the direct contact of the wire rope with a flange on the steel pipe tower by covering the main body of the C-type lifting tool, thus avoiding wire rope breakage accidents caused by friction and eliminating the risk of contact wear. The fixing bolts penetrate vertically through the bolt holes of the flange, ensuring that the lifting force is transmitted axially along the bolts, regulating the direction of force. The adjustable clamping components are symmetrically distributed at the two lifting points of the flange, eliminating the risk of overturning caused by single-point instability. The specific implementation method is as follows: Reference Figs. 1-3 As shown, a special hoisting device for assembling steel pipe towers includes a steel pipe tower. A hoisting section is provided on the top surface of the steel pipe tower. The hoisting section includes a hoisting frame 1 and a hoisting tool 2. The hoisting tool 2 is detachably connected to the steel pipe tower and the hoisting frame 1 respectively. The lifting device 2 includes a C-shaped main body 3 and a first lifting ring 4. The main body 3 covers the flange of the steel pipe tower. The first lifting ring 4 is integrally connected to the upper end of the main body 3. The open end of the main body 3 is fixedly provided with a fixed through hole. A fixed screw 5 is fitted in the two fixed through holes. The fixed screw 5 is connected to the fixed through hole by a thread. Both sides of the main body 3 are integrally provided with a reinforcing edge 6.

[0024] Here, the C-shaped main body 3 directly covers the flange of the steel pipe tower, avoiding direct friction between the wire rope and the flange and eliminating the risk of wire rope wear and breakage in traditional hoisting. The fixing bolt 5 is fixed through the threaded connection to the through hole, ensuring that the lifting device 2 fits tightly against the flange, distributing the force evenly and preventing the shackle from breaking under lateral force. In addition, the one-piece molded lifting ring is directly connected to the lifting frame 1, eliminating the shackle assembly step and shortening the hoisting preparation time; the reinforced edge 6 design enhances the deformation resistance of the main body 3, meeting the requirements of high-load hoisting.

[0025] In a preferred embodiment, the lifting frame 1 includes a horizontal bar hanger 7, a second lifting ring 8, and a vertical bar hanger 9 fixedly connected to both ends of the horizontal bar hanger 7. The horizontal bar hanger 7 and the vertical bar hanger 9 are arranged perpendicularly. The second lifting ring 8 is fixed to the upper end of the horizontal bar hanger 7. A sliding plate 10 is provided close to the bottom of the horizontal bar hanger 7. The two ends of the sliding plate 10 are fixedly connected to the inner side of the vertical bar hanger 9, and the sliding plate 10 is arranged parallel to the horizontal bar hanger 7. A clamping assembly is slidably sleeved on the sliding plate 10, and the clamping assembly is detachably connected to the first lifting ring 4.

[0026] Here, the horizontal and vertical bars form a rigid frame, the sliding plate 10 provides horizontal guidance, ensures symmetrical distribution of lifting points and improves lifting stability, the clamping assembly and lifting ring are detachably connected, support single or multiple lifting device 2 combinations, adapt to steel pipe towers of different tonnages, the sliding plate 10 and the clamping assembly allow for fine adjustment of the lateral position of the lifting device 2 to adapt to the size of flanges on different steel pipe towers.

[0027] In a preferred embodiment, a connecting block 11 is provided in the middle of the crossbar hanger 7 and the sliding plate 10, and the two ends of the connecting block 11 are fixedly connected to the crossbar hanger 7 and the sliding plate 10 respectively.

[0028] Here, the crossbar and the sliding plate 10 are fixed together as a whole by the connecting block 11 to prevent the sliding plate 10 from shifting during hoisting, ensure synchronous movement of the clamping components, and enhance torsional resistance. The connecting block 11 fixes the crossbar and the sliding plate 10 together, enhances the torsional stiffness of the frame, prevents the sliding plate 10 from deforming or shifting during hoisting, ensures that the lifting point is always subjected to vertical force, indirectly improves safety, and avoids accidental load shift due to structural deformation.

[0029] In a preferred embodiment, the clamping assembly includes a first sliding frame 12 and a second sliding frame 13 slidably sleeved on both sides of the sliding plate 10. A bidirectional screw 14 for adjusting the distance between the first sliding frame 12 and the second sliding frame 13 is provided below the sliding plate 10. The two ends of the bidirectional screw 14 pass through the first sliding frame 12 and the second sliding frame 13 respectively and are rotatably connected to the inner side of the two vertical rod hangers 9. The bidirectional screw 14 is rotatably connected to the first sliding frame 12 and the second sliding frame 13 and is arranged parallel to the sliding plate 10.

[0030] Here, the distance between the two sliding frames is synchronously controlled by the bidirectional screw 14 through the single adjustment part 15, which can quickly match the hole spacing of the flange on the steel pipe tower and efficiently adapt to the size of the flange on different steel pipe towers.

[0031] In a preferred embodiment, an adjustment part 15 is provided in the middle of the bidirectional screw 14, and both ends of the bidirectional screw 14 are rotatably connected to the vertical rod hanger 9 through bearing seats 16, and the bearing seats 16 are fixedly connected to the vertical rod hanger 9.

[0032] Here, the bidirectional screw 14, in conjunction with the adjusting unit 15, enables single-handed, synchronous adjustment of the distance between the two sliding frames, quickly matching the width of the flange on the steel pipe tower. The bearing housing 16 secures both ends of the screw 5, preventing bending during adjustment, eliminating shaking of the adjusting mechanism, and ensuring the mechanism locks in place during hoisting. The parallel layout to the sliding plate 10 reduces eccentric loads. This significantly improves work efficiency and ensures simple and safe operation. In a preferred embodiment, the first sliding frame 12 and the second sliding frame 13 are provided with an installation groove 17 at the middle end near the steel pipe tower, and the free ends of the first sliding frame 12 and the second sliding frame 13 are both fixedly provided with a connecting through hole. A connecting screw 18 that is threaded with the connecting through hole is provided in the connecting through hole. The connecting screw 18 passes through the connecting through hole and the first lifting ring 4 to connect the lifting device 2 to the end of the installation groove 17.

[0033] Here, the mounting slot 17 guides the positioning of the lifting device 2, and the connecting screw 18 passes through the lifting ring and the through hole. The lifting device 2 only needs to be roughly placed in the slot and the connecting screw 18 is tightened to complete the connection, realizing "blind installation". This can further solve the problem of cumbersome operation and improve efficiency.

[0034] In a preferred embodiment, a telescopic rod 19 connected to the vertical rod hanger 9 is provided at the free end edge of the first sliding frame 12 and the second sliding frame 13 on the side away from each other.

[0035] In a preferred embodiment, one end of the telescopic rod 19 is fixedly connected to the vertical rod hanger 9, and the other end is fixedly connected to the first sliding frame 12 or the second sliding frame 13, with its end being accommodated and fixed in the mounting groove 17.

[0036] Here, the telescopic rod 19 connects the vertical rod and the sliding frame, limiting the sway amplitude, especially in response to wind or hoisting sway, and does not interfere with the spacing adjustment, thus ensuring dynamic stability.

[0037] In a preferred embodiment, both the first sliding frame 12 and the second sliding frame 13 are provided with reinforcing ribs 20 on both sides near the connecting through hole.

[0038] Here, a reinforcing rib 20 is added at the key point of force transmission in the connecting through hole to prevent cracking after long-term use. This can prevent stress concentration failure, strengthen the stress concentration area, and prevent cracking around the through hole during hoisting. Especially for heavy-duty hoisting, this can extend the life of key load-bearing components and reduce maintenance costs.

[0039] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A special hoisting device for assembling steel pipe towers, comprising a steel pipe tower, wherein a hoisting section is provided on the top surface of the steel pipe tower, characterized in that, The hoisting unit includes a hoisting frame (1) and a lifting device (2), wherein the lifting device (2) is detachably connected to the steel pipe tower and the hoisting frame (1); The lifting device (2) includes a C-shaped main body (3) and a first lifting ring (4). The main body (3) covers the flange of the steel pipe tower. The first lifting ring (4) is integrally connected to the upper end of the main body (3). The open end of the main body (3) is fixedly provided with a through hole. A fixing screw (5) is fitted in the two through holes. The fixing screw (5) is connected to the through hole by a thread. The two edges of the main body (3) are integrally provided with a reinforcing edge (6).

2. The special hoisting device for assembling steel pipe towers according to claim 1, characterized in that, The hoisting frame (1) includes a horizontal rod hanger (7), a second lifting ring (8), and a vertical rod hanger (9) fixedly connected to both ends of the horizontal rod hanger (7). The horizontal rod hanger (7) is perpendicular to the vertical rod hanger (9). The second lifting ring (8) is fixed to the upper end of the horizontal rod hanger (7). A sliding plate (10) is provided close to the bottom of the horizontal rod hanger (7). The two ends of the sliding plate (10) are fixedly connected to the inner side of the vertical rod hanger (9). The sliding plate (10) is parallel to the horizontal rod hanger (7). A clamping assembly is slidably sleeved on the sliding plate (10). The clamping assembly is detachably connected to the first lifting ring (4).

3. The special hoisting device for assembling steel pipe towers according to claim 2, characterized in that, A connecting block (11) is provided in the middle of the crossbar hanger (7) and the sliding plate (10), and the two ends of the connecting block (11) are fixedly connected to the crossbar hanger (7) and the sliding plate (10) respectively.

4. The special hoisting device for assembling steel pipe towers according to claim 2, characterized in that, The clamping assembly includes a first sliding frame (12) and a second sliding frame (13) slidably sleeved on both sides of the sliding plate (10). A bidirectional screw (14) for adjusting the distance between the first sliding frame (12) and the second sliding frame (13) is provided below the sliding plate (10). The two ends of the bidirectional screw (14) pass through the first sliding frame (12) and the second sliding frame (13) respectively and are rotatably connected to the inner side of the two vertical rod hangers (9). The bidirectional screw (14) is rotatably connected to the first sliding frame (12) and the second sliding frame (13). The bidirectional screw (14) is arranged parallel to the sliding plate (10).

5. The special hoisting device for assembling steel pipe towers according to claim 4, characterized in that, The bidirectional screw (14) is provided with an adjustment part (15) in the middle. Both ends of the bidirectional screw (14) are rotatably connected to the vertical rod hanger (9) through bearing seats (16). The bearing seats (16) are fixedly connected to the vertical rod hanger (9).

6. The special hoisting device for assembling steel pipe towers according to claim 4, characterized in that, The first sliding frame (12) and the second sliding frame (13) are provided with an installation groove (17) at one end near the steel pipe tower. The free ends of the first sliding frame (12) and the second sliding frame (13) are both fixedly provided with a connecting through hole. A connecting screw (18) that is threaded with the connecting through hole is provided in the connecting through hole. The connecting screw (18) passes through the connecting through hole and the first lifting ring (4) to connect the lifting device (2) to the end of the installation groove (17).

7. The special hoisting device for assembling steel pipe towers according to claim 4, characterized in that, The first sliding frame (12) and the second sliding frame (13) are each provided with a telescopic rod (19) connected to the vertical rod hanger (9) at the free end edge on the side away from each other.

8. The special hoisting device for assembling steel pipe towers according to claim 7, characterized in that, One end of the telescopic rod (19) is fixedly connected to the vertical rod hanger (9), and the other end is fixedly connected to the first sliding frame (12) or the second sliding frame (13).

9. A special hoisting device for assembling steel pipe towers according to claim 4, characterized in that, The first sliding frame (12) and the second sliding frame (13) are both provided with reinforcing ribs (20) on both sides near the connecting through hole.

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