Hoisting tackle for power transmission line construction

Abstract

The utility model relates to the technical field of power transmission line construction, and discloses a hoisting tackle for power transmission line construction, which comprises two top plates, two-way threaded rods penetrate through and are rotatably connected with the middle parts of the inner walls of the top plates, one end of the two-way threaded rod on one side is fixedly connected with a fixed rod, and one end of the two-way threaded rod on the other side is fixedly connected with a limiting rod; the outer wall of the limiting rod penetrates through and is slidably connected with the fixing rod, the outer ring of the limiting rod penetrates through and is fixedly connected with a first worm wheel, and the top of the inner wall of the top plate on the other side penetrates through and is rotationally connected with a first worm. According to the utility model, through the cooperation among the frame, the fixing plate, the sliding plate, the upper half pulley, the lower half pulley, the spring, the connecting rod, the bidirectional threaded rod, the fixing rod, the limiting rod, the first worm gear, the first worm and the first fixing ring, the position of the pulley after depth adjustment is ensured to be locked, and the potential safety hazard of pulley loosening in the hoisting process of the power transmission line is avoided; the hoisting requirements of power transmission cables with different diameters are met.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line construction technology, specifically a lifting pulley for power transmission line construction. Background Technology

[0002] Power transmission line construction is a complex and systematic project, primarily involving the transmission of electricity generated by power plants to various electricity-consuming areas via power lines. It encompasses multiple stages, including preliminary route planning and surveying to confirm the path, terrain, and geological conditions; mid-stage construction of tower foundations, tower erection, and line stringing, involving technologies such as bored piles, tower hoisting, and conductor / ground wire laying; and final completion of accessory installation, line commissioning, and acceptance, ensuring that the line's insulation, grounding, and other performance characteristics meet standards. The construction process requires the comprehensive use of mechanical equipment and specialized technologies, while strictly adhering to safety regulations to ensure the efficient, stable, and safe operation of the transmission lines and meet societal electricity demands.

[0003] In existing technologies, the simplest way to adjust the pulley depth is usually through bolt positioning: several sets of horizontally arranged positioning holes are made on the pulley bracket or frame, and the pulley is mounted on the bracket via an axle. The two ends of the axle pass through the positioning holes and are fixed with bolts and nuts. When the depth needs to be adjusted, the bolts are loosened, and the axle and pulley are moved laterally along the positioning holes to the appropriate position. Then the bolts are tightened to fix it. By changing the lateral position of the pulley on the bracket, the contact depth between the pulley and the cable is adjusted. This method is suitable for basic scenarios where high adjustment precision is not required.

[0004] Bolts and nuts are prone to loosening under long-term vibration, causing pulley depth deviation or even detachment. Especially in high-voltage transmission lines, such loosening may cause cable wear, discharge and other faults, and in severe cases, affect the safe operation of the line. Frequent inspection and maintenance are required, increasing labor costs. It is also impossible to efficiently adjust the depth of the pulley. In order to address the above problems, a lifting pulley for transmission line construction is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a lifting pulley for power transmission line construction, which solves the problem in the prior art that the depth of the pulley cannot be efficiently adjusted.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lifting pulley for power transmission line construction, comprising two top plates. A bidirectional threaded rod is rotatably connected through the middle of the inner wall of each top plate. A fixed rod is fixedly connected to one end of the bidirectional threaded rod on one side, and a limiting rod is fixedly connected to one end of the bidirectional threaded rod on the other side. The outer wall of the limiting rod is slidably connected to the fixed rod. A first worm gear is rotatably connected through the outer ring of the limiting rod. A first worm is rotatably connected through the top of the inner wall of the other top plate, and the first worm is meshed with the first worm gear. A first fixing ring is fixedly connected to the bottom of the first worm. Frames are threadedly connected to both sides of the outer ring of the bidirectional threaded rod. A fixed plate is fixedly connected to the bottom of the frame. A lower half pulley is fixedly connected to one side of the fixed plate. A sliding plate is slidably connected through the inner wall of the fixed plate. An upper half pulley is fixedly connected to one side of the sliding plate. Springs are fixedly connected to the inner walls of the upper and lower half pulleys. A connecting rod is fixedly connected to one end of the spring. An adjustment assembly is provided at the bottom of one top plate.

[0007] By adopting the above technical solution, the limiting rod can slide inside the fixed rod. Through the cooperation between the limiting rod and the fixed rod, the rotation of the limiting rod drives the fixed rod to rotate synchronously.

[0008] As a further description of the above technical solution: the adjustment component includes a second fixed ring, which is rotatably connected to the bottom of a top plate on one side, a first bevel gear set is fixedly connected to the top of the second fixed ring, a rotating rod is fixedly connected to the rear end of the first bevel gear set, and a second worm gear is fixedly connected to the rear end of the rotating rod.

[0009] By adopting the above technical solution, the first bevel gear set contains two bevel gears, and the two bevel gears are meshed and connected to each other.

[0010] As a further description of the above technical solution: a first lead screw is rotatably connected through one side of the inner wall of the top plate on one side, and the outer ring of the first lead screw is threadedly connected to the top plate on the other side.

[0011] By adopting the above technical solution, the rotation of the first lead screw causes the top plate on the right side to slide against the inner wall of the top plate on the left side.

[0012] As a further description of the above technical solution: a second bevel gear set is fixedly connected to one end of the first lead screw.

[0013] By adopting the above technical solution, the driven bevel gear drives the first lead screw to rotate.

[0014] As a further description of the above technical solution: a second worm gear is fixedly connected to the bottom of the second bevel gear set, and the second worm gear is meshed with the second worm.

[0015] By adopting the above technical solution, the second worm gear drives the drive bevel gear in the second bevel gear set to rotate.

[0016] As a further description of the above technical solution: a lead screw motor is provided on the top of the inner wall of the fixed plate on both sides, and the output end of the lead screw motor is threadedly connected to the slide plate.

[0017] By adopting the above technical solution, the screw motor can drive the slide plate to move up and down.

[0018] As a further description of the above technical solution: both ends of the top plate are fixedly connected to fixing blocks, one end of the fixing block is provided with a steel rope, and one end of the steel rope is fixedly connected to a hook.

[0019] By adopting the above technical solution, the hook can be lifted by an external crane.

[0020] As a further description of the above technical solution: a tool is provided on the inner wall of the first fixing ring.

[0021] By adopting the above technical solution, the fixed ring can be easily rotated using tools.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. This utility model provides a lifting pulley for power transmission line construction. Firstly, through the cooperation of the frame, fixing plate, sliding plate, upper half pulley, lower half pulley, spring, connecting rod, double threaded rod, fixing rod, limiting rod, first worm gear, first worm, and first fixing ring, construction personnel can quickly adjust according to the on-site cable laying angle, lifting weight, and other requirements to ensure that the position of the pulley is locked after the depth adjustment, avoiding the safety hazard of pulley loosening during power transmission line hoisting. No parts need to be replaced, improving work efficiency and suitable for the hoisting needs of power transmission cables of different diameters.

[0024] 2. The lifting pulley for power transmission line construction provided by this utility model, through the cooperation between the rotating rod, the first bevel gear set, the second fixed ring, the second worm gear, the second bevel gear set, and the first lead screw, can form a moderate pressure between the top plate and the cable through fine adjustment, which can ensure the fixing strength and avoid excessive compression. It is especially suitable for the insulation protection of high-voltage cables. The self-locking structure and symmetrical transmission design ensure that the position of the top plate does not shift in harsh environments such as strong winds and vibrations, reducing the risk of high-altitude operations. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present utility model;

[0026] Figure 2 This is a schematic diagram of the spring of this utility model;

[0027] Figure 3 This is a perspective sectional view of the top plate of this utility model;

[0028] Figure 4 This is a schematic diagram of the first worm gear of this utility model;

[0029] Figure 5 This is a schematic diagram of the first bevel gear set of this utility model;

[0030] Figure 6 This is a schematic diagram of the second worm gear of this utility model.

[0031] Legend:

[0032] 1. Top plate; 2. Frame; 3. Fixing plate; 4. Slide plate; 5. Upper half pulley; 6. Lower half pulley; 7. Spring; 8. Connecting rod; 9. Double-ended threaded rod; 10. Fixing rod; 11. Limiting rod; 12. First worm gear; 13. First worm; 14. First fixing ring; 15. Rotating rod; 16. First bevel gear set; 17. Second fixing ring; 18. Second worm; 19. Second bevel gear set; 20. First lead screw; 21. Lead screw motor; 22. Fixing block; 23. Steel rope; 24. Hook; 25. Tool; 26. Second worm gear. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0035] Reference Figure 1 This utility model discloses a lifting pulley for power transmission line construction, comprising two top plates 1. A screw motor 21 is installed on the top of the inner wall of the two side fixed plates 3, and the output end of the screw motor 21 is threadedly connected to a sliding plate 4. The drive of the screw motor 21 causes the sliding plate 4 to move downwards, and the movement of the sliding plate 4 drives the upper half pulley 5 to move downwards. Fixed blocks 22 are fixedly connected to both ends of the top of the top plates 1. A steel rope 23 is installed at one end of each fixed block 22, allowing the fixed blocks 22 to be connected together. A hook 24 is fixedly connected to one end of each steel rope 23, facilitating the lifting of the device. A tool 25 is installed on the inner wall of the first fixed ring 14, and the tool 25 is an external mechanism.

[0036] Reference Figures 2-4 A bidirectional threaded rod 9 is rotatably connected through the middle of the inner wall of the top plate 1. One end of the bidirectional threaded rod 9 on one side is fixedly connected to a fixing rod 10. Rotation of the fixing rod 10 causes the left-side bidirectional threaded rod 9 to rotate. One end of the other bidirectional threaded rod 9 on the other side is fixedly connected to a limiting rod 11. Rotation of the limiting rod 11 causes the right-side bidirectional threaded rod 9 to rotate. The outer wall of the limiting rod 11 is slidably connected to the fixing rod 10, allowing the limiting rod 11 to slide only inside the fixing rod 10. A first worm gear 12 is rotatably connected through the outer ring of the limiting rod 11. Rotation of the first worm gear 12 causes the limiting rod 11 to rotate. A first worm 13 is rotatably connected through the top of the inner wall of the top plate 1 on the other side. The first worm 13 meshes with the first worm gear 12, and the meshing between the worm gear and the worm has a self-locking property. A first fixed ring 14 is fixedly connected to the bottom of a worm gear 13. The rotation of the first fixed ring 14 drives the first worm gear 13 to rotate synchronously. Frames 2 are threadedly connected to both sides of the outer ring of the bidirectional threaded rod 9. A fixed plate 3 is fixedly connected to the bottom of the frame 2. The movement of the frame 2 drives the fixed plate 3 to move synchronously. A lower half pulley 6 is fixedly connected to one side of the fixed plate 3. A slide plate 4 is slidably connected through the inner wall of the fixed plate 3. The slide plate 4 slides inside the fixed plate 3. An upper half pulley 5 is fixedly connected to one side of the slide plate 4. Springs 7 are fixedly connected to the inner walls of the upper half pulley 5 and the lower half pulley 6. A connecting rod 8 is fixedly connected to one end of the spring 7. The connecting rod 8 is in the middle position due to the characteristics of the spring 7. A limit block is provided on the outer ring of the connecting rod 8 to prevent the connecting rod 8 from falling off. An adjustment component is provided at the bottom of the top plate 1 on one side.

[0037] Reference Figure 5 and Figure 6 The adjusting assembly includes a second fixed ring 17, which is rotatably connected to the bottom of one side of the top plate 1. A first bevel gear set 16 is fixedly connected to the top of the second fixed ring 17. The rotation of the second fixed ring 17 drives the bevel gear to rotate. A rotating rod 15 is fixedly connected to the rear end of the first bevel gear set 16. The driven bevel gear drives the rotating rod 15 to rotate. A second worm gear 18 is fixedly connected to the rear end of the rotating rod 15. The rotation of the rotating rod 15 drives the second worm gear 18 to rotate. A first lead screw 20 is rotatably connected to one side of the inner wall of one side of the top plate 1. The outer ring of the first lead screw 20 is threadedly connected to the other side of the top plate 1. The rotation of the first lead screw 20 causes the other side of the top plate 1 to move. A second bevel gear set 19 is fixedly connected to one end of the first lead screw 20. A second worm wheel 26 is fixedly connected to the bottom of the second bevel gear set 19. The second worm wheel 26 is meshed with the second worm gear 18. The worm wheel cannot drive the worm gear to rotate.

[0038] Working principle: The tool 25 rotates the first fixed ring 14, which in turn drives the first worm 13, which is fixedly connected to it, to rotate. The first worm 13 meshes with the first worm wheel 12, converting the rotational motion of the worm into the rotational motion of the worm wheel. The rotation of the worm wheel drives the limiting rod 11 to rotate synchronously. The rotation of the limiting rod 11 drives the fixed rod 10 to rotate, which in turn drives the bidirectional threaded rod 9 to rotate synchronously. The rotation of the bidirectional threaded rod 9 causes the frames 2 on both sides to move linearly along the axis of the threaded rod, thus adjusting the distance between the frames 2. The movement of the frames 2 drives the fixed plate 3 to move synchronously. The movement of the sliding plate 4 compresses or stretches the spring 7. The elastic force of the spring 7 acts on the connecting rod 8, thereby adjusting the distance between the upper half pulley 5 and the lower half pulley 6, thus achieving... The pulley depth is adjusted by rotating the second fixed ring 17 using tool 25. The rotation of the second fixed ring 17 drives the first bevel gear set 16 connected to it to rotate. The rotation of the first bevel gear set 16 is transmitted to the rotating rod 15, causing it to rotate synchronously. The rotation of the rotating rod 15 drives the second worm gear 18 fixedly connected to it to rotate. The second worm gear 18 meshes with the second worm wheel 26, converting the rotational motion of the worm gear into the rotational motion of the worm wheel. The rotation of the second worm wheel 26 drives the second bevel gear set 19 connected to it to rotate. The rotation of the second bevel gear set 19 is transmitted to the first lead screw 20, causing it to rotate. Since one side of the top plate 1 is threadedly connected to the first lead screw 20, the rotation of the first lead screw 20 will cause the two top plates 1 to move linearly along the axis of the lead screw, thereby adjusting the distance between the two top plates 1.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting pulley for power transmission line construction, comprising two top plates (1), characterized in that: A bidirectional threaded rod (9) is rotatably connected through the middle of the inner wall of the top plate (1). One end of the bidirectional threaded rod (9) is fixedly connected to a fixing rod (10), and one end of the bidirectional threaded rod (9) is fixedly connected to a limiting rod (11). The outer wall of the limiting rod (11) is slidably connected through the fixing rod (10). A first worm gear (12) is rotatably connected through the outer ring of the limiting rod (11). A first worm (13) is rotatably connected through the top of the inner wall of the top plate (1) on the other side. The first worm (13) is meshed with the first worm gear (12). The bottom is fixedly connected to a first fixing ring (14). The outer ring of the bidirectional threaded rod (9) is threadedly connected to a frame (2) on both sides. The bottom of the frame (2) is fixedly connected to a fixing plate (3). The lower half pulley (6) is fixedly connected to one side of the fixing plate (3). The inner wall of the fixing plate (3) is slidably connected to a sliding plate (4). The upper half pulley (5) is fixedly connected to one side of the sliding plate (4). The inner walls of the upper half pulley (5) and the lower half pulley (6) are fixedly connected to a spring (7). One end of the spring (7) is fixedly connected to a connecting rod (8). An adjustment component is provided at the bottom of the top plate (1) on one side.

2. The lifting pulley for power transmission line construction according to claim 1, characterized in that: The adjustment assembly includes a second fixed ring (17), which is connected to the bottom of a top plate (1) on one side through and rotatably. A first bevel gear set (16) is fixedly connected to the top of the second fixed ring (17), and a rotating rod (15) is fixedly connected to the rear end of the first bevel gear set (16). A second worm gear (18) is fixedly connected to the rear end of the rotating rod (15).

3. The lifting pulley for power transmission line construction according to claim 1, characterized in that: One of the top plates (1) on one side has a first lead screw (20) that is rotatably connected through and rotatably connected to the inner wall of the top plate (1) on the other side, and the outer ring of the first lead screw (20) is threadedly connected to the top plate (1) on the other side.

4. A lifting pulley for power transmission line construction according to claim 3, characterized in that: The first lead screw (20) is fixedly connected to a second bevel gear set (19) at one end.

5. A lifting pulley for power transmission line construction according to claim 4, characterized in that: The bottom of the second bevel gear set (19) is fixedly connected to a second worm gear (26), and the second worm gear (26) is meshed with the second worm (18).

6. A lifting pulley for power transmission line construction according to claim 1, characterized in that: A lead screw motor (21) is provided on the top of the inner wall of the fixed plate (3) on both sides, and the output end of the lead screw motor (21) is threadedly connected to the slide plate (4).

7. A lifting pulley for power transmission line construction according to claim 1, characterized in that: The top plate (1) has fixed blocks (22) at both ends. A steel rope (23) is provided at one end of the fixed block (22), and a hook (24) is fixedly connected at one end of the steel rope (23).

8. A lifting pulley for power transmission line construction according to claim 1, characterized in that: A tool (25) is provided on the inner wall of the first fixing ring (14).

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