A large-span power transmission tower

Abstract

This utility model relates to the field of power transmission tower technology, specifically a long-span power transmission tower, including a support, a frame, and a climbing device. The frame is fixed to the upper surface of the support, and the climbing device is installed in the inner wall of the support. The climbing device includes an upper ladder, which is fixedly connected to the frame. Slide grooves are provided at both ends of the upper ladder, and sliders are slidably connected to the inner walls of the slide grooves at both ends of the upper ladder. A lower ladder is fixedly connected to the surface of the sliders. A motor is fixedly connected to the upper surface of the frame, and a round rod is fixedly connected to the drive end of the motor. The end of the round rod away from the motor is rotatably connected to the frame. A coil is fixedly connected to the surface of the round rod, and a pull rope is wound around the surface of the coil. This utility model aims to enable maintenance personnel to conveniently and safely climb the tower, while also preventing unauthorized personnel from climbing. The motor-driven retractable pull rope mechanism allows the lower ladder to be raised and lowered flexibly. It can be lowered for personnel to climb during maintenance and retracted after maintenance to prevent unauthorized personnel from touching it, thus balancing practicality and safety.

Description

Technical Field

[0001] This utility model relates to the field of power transmission tower technology, and in particular to a long-span power transmission tower. Background Technology

[0002] Long-span transmission towers refer to towering structures used to cross complex geographical areas such as rivers, straits, and valleys to ensure stable long-distance power transmission. They are incredibly tall with large base openings to provide robust support. In terms of materials, they use steel-concrete composite main materials and low-alloy tempered and heat-treated cast steel nodes. Long-span transmission towers can meet the needs of long-distance, high-capacity power transmission and are of great significance for regional power allocation and energy optimization.

[0003] However, while installing ladders on long-span transmission towers facilitates maintenance, it is difficult to detect unauthorized climbing activities in a timely manner. Once unauthorized personnel climb the ladders, they may cause serious accidents such as falls from heights due to physical exhaustion or improper operation, or even damage the structural components of the transmission tower, affecting the safety of power transmission and causing significant economic losses and social impact. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that while ladders installed on long-span transmission towers are convenient for maintenance, it is difficult to detect unauthorized climbing behavior in a timely manner. Once unauthorized personnel climb the ladders, they may cause serious accidents such as falls from heights due to physical exhaustion or improper operation, or even damage the structural components of the transmission tower, affecting the safety of power transmission and causing significant economic losses and social impact. Therefore, this utility model proposes a long-span transmission tower.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a long-span transmission tower, comprising a support, a frame, and a climbing device. The frame is fixed to the upper surface of the support, and the climbing device is disposed in the inner wall of the support. The climbing device includes an upper ladder, which is fixedly connected to the frame. Slide grooves are provided at both ends of the upper ladder, and sliders are slidably connected to the inner walls of the slide grooves at both ends of the upper ladder. A lower ladder is fixedly connected to the surface of the sliders. A motor is fixedly connected to the upper surface of the frame, and a round rod is fixedly connected to the drive end of the motor. The end of the round rod away from the motor is rotatably connected to the frame. A coiled rod is fixedly connected to the surface of the round rod, and a pull rope is wound around the surface of the coiled rod. By setting up the climbing device, maintenance personnel can conveniently and safely climb the tower, while also preventing unauthorized personnel from climbing. The motor-driven retractable pull rope mechanism allows the lower ladder to be flexibly raised and lowered. It can be lowered for personnel to climb during maintenance and retracted after maintenance to prevent unauthorized personnel from touching it, thus balancing practicality and safety.

[0006] Preferably, the upper surface of the upper ladder has a rectangular hole, and the end of the pull rope away from the reel passes through the rectangular hole on the surface of the upper ladder and is fixedly connected to the upper surface of the lower ladder. By setting the pull rope, when the motor drives the round rod to rotate the reel, the pull rope is released downwards, releasing the restraint on the lower ladder, so that the lower ladder slowly descends to the ground under its own gravity for maintenance personnel to climb.

[0007] Preferably, the bottom of the upper ladder is provided with a sliding hole, and a baffle is slidably connected to the inner wall of the circular hole at the bottom of the upper ladder.

[0008] Preferably, the baffle is in contact with the sliding hole, and a spring is fixedly connected to the lower surface of the baffle. The end of the spring away from the baffle is fixedly connected to the upper ladder. By setting the spring, when the pull rope is lowered to make the lower ladder descend, the slider and the baffle come into contact, and the spring is compressed and deformed. The spring is buffered by its own elastic deformation to reduce the impact force generated during the descent of the ladder, thereby reducing the vibration during the descent of the ladder, ensuring the smoothness of the descent, and providing safer and more stable conditions for maintenance personnel to climb.

[0009] Preferably, the lower surface of the ladder is provided with a grounding component, which includes a column. The column is fixedly connected to the lower surface of the ladder, and a tapered rod is fixedly connected to the lower surface of the column. By setting up the grounding component, the stability of the ladder after landing is enhanced. When maintenance personnel step on the footboard, the column and the tapered rod are inserted into the ground, providing stable support for climbing, preventing the ladder from swaying or shifting during climbing, reducing the climbing risk for maintenance personnel, and ensuring work safety.

[0010] Preferably, there are two columns, which are respectively located at both ends of the lower ladder.

[0011] Preferably, the surface of the column is fixedly connected with two pedals, which are respectively fixed to the columns on both sides. By setting the pedals, when maintenance personnel lower the ladder to contact the ground, they step on the pedals. The pedals are subjected to force, which drives the column to move downward. The column applies pressure to insert the conical rod into the ground, thereby increasing the stability of the connection between the ladder and the ground, assisting maintenance personnel in safely climbing to the power tower, and ensuring that the ladder will not shake or shift due to force during use.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] In this invention, a climbing device is installed. When maintenance personnel reach the base of the power tower and need to ascend for repairs, the motor is activated. The motor drives a round rod, which in turn rotates a reel and lowers the rope. As the rope descends, the lower ladder loses its restraint and slowly descends until the slider contacts the baffle. The spring is then compressed, causing deformation and cushioning the impact of the descending ladder. At this point, personnel can climb to the top of the power tower using both the lower and upper ladders. After maintenance is completed, the motor drives the round rod to reel in the rope, and the lower ladder, pulled by the rope, slowly moves upward and detaches from the ground. At this point, it becomes difficult for unauthorized personnel to climb. This climbing device enables maintenance personnel to conveniently and safely ascend the tower while preventing unauthorized climbing. The motor-driven rope retraction mechanism allows the lower ladder to be raised and lowered flexibly. It is lowered for personnel to climb during maintenance and retracted after maintenance to prevent unauthorized access, thus balancing practicality and safety.

[0014] In this invention, by setting up a grounding component, when the ladder descends and contacts the ground, stepping on the pedal causes the pedal to exert force, which in turn drives the upright column. The upright column, in conjunction with the tapered rod, inserts into the ground, thereby increasing the stability of the ladder and assisting maintenance personnel in climbing. By setting up the grounding component, the stability of the ladder after landing is enhanced. When maintenance personnel step on the pedal, the upright column and tapered rod are inserted into the ground, providing stable support for climbing, preventing the ladder from swaying or shifting during the climb, reducing the climbing risk for maintenance personnel, and ensuring work safety. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a long-span transmission tower is provided for this utility model;

[0016] Figure 2 A schematic diagram of a climbing device for a long-span transmission tower is provided for this utility model.

[0017] Figure 3 This utility model proposes a long-span transmission tower. Figure 2 A magnified structural diagram at point A;

[0018] Figure 4 This utility model provides a schematic diagram of the motor structure of a long-span transmission tower;

[0019] Figure 5 This utility model presents a schematic diagram of the grounding component structure for a long-span transmission tower.

[0020] Legend: 1. Support; 2. Frame; 3. Climbing device; 31. Round pole; 32. Roller pole; 33. Motor; 34. Grounding component; 341. Column; 342. Step; 343. Tapered pole; 35. Upper ladder; 36. Lower ladder; 37. Slider; 38. Baffle; 39. Spring; 310. Pull rope. Detailed Implementation

[0021] Please see Figures 1-5 This utility model provides a technical solution: a long-span transmission tower, including a support 1, a frame 2 and a climbing device 3, the frame 2 is fixed on the upper surface of the support 1, and the climbing device 3 is set in the inner wall of the support 1.

[0022] In this implementation scheme: the climbing device 3 includes an upper ladder 35, which is fixedly connected to the frame 2. The upper ladder 35 has grooves at both ends, and sliders 37 are slidably connected to the inner walls of the grooves at both ends of the upper ladder 35. A lower ladder 36 is fixedly connected to the surface of the sliders 37. A motor 33 is fixedly connected to the upper surface of the frame 2. A round rod 31 is fixedly connected to the drive end of the motor 33. The end of the round rod 31 away from the motor 33 is rotatably connected to the frame 2. A coiled rod 32 is fixedly connected to the surface of the round rod 31, and a pull rope 310 is wound around the surface of the coiled rod 32. By setting up the climbing device 3, maintenance personnel can conveniently and safely climb the tower, while also preventing unauthorized personnel from climbing. The pull rope 310 mechanism driven by the motor 33 allows the lower ladder 36 to be raised and lowered flexibly. It can be lowered for personnel to climb during maintenance and retracted after maintenance to prevent unauthorized personnel from touching it, thus balancing practicality and safety.

[0023] Specifically, a rectangular hole is provided on the upper surface of the upper ladder 35. The end of the pull rope 310 away from the winding rod 32 passes through the rectangular hole on the surface of the upper ladder 35 and is fixedly connected to the upper surface of the lower ladder 36. By setting the pull rope 310, when the motor 33 drives the round rod 31 to rotate the winding rod 32, the pull rope 310 is lowered to release the restraint on the lower ladder 36, so that the lower ladder 36 slowly descends to the ground under its own gravity for maintenance personnel to climb.

[0024] Specifically, a sliding hole is provided at the bottom of the upper ladder 35, and a baffle 38 is slidably connected to the inner wall of the circular hole at the bottom of the upper ladder 35.

[0025] Specifically, the baffle 38 contacts the sliding hole, and a spring 39 is fixedly connected to the lower surface of the baffle 38. The end of the spring 39 away from the baffle 38 is fixedly connected to the upper ladder 35. By setting the spring 39, when the pull rope 310 is lowered to make the lower ladder 36 descend, the slider 37 abuts against the baffle 38, and the spring 39 is compressed and deformed. Through its own elastic deformation, the impact force generated during the descent of the lower ladder 36 is buffered, thereby reducing the vibration of the lower ladder 36 during descent, ensuring the stability of the descent of the lower ladder 36, and providing safer and more stable conditions for maintenance personnel to climb.

[0026] Specifically, a grounding component 34 is provided on the lower surface of the lower ladder 36. The grounding component 34 includes a column 341, which is fixedly connected to the lower surface of the lower ladder 36. A tapered rod 343 is fixedly connected to the lower surface of the column 341.

[0027] In this embodiment: by setting a grounding component 34, the stability of the ladder 36 after landing is enhanced. When maintenance personnel step on the pedal 342, the column 341 and the tapered rod 343 are inserted into the ground, providing stable support for climbing, preventing the ladder 36 from shaking or shifting during the climbing process, reducing the climbing risk for maintenance personnel, and ensuring work safety.

[0028] Specifically, there are two columns 341, which are respectively set at both ends of the lower ladder 36.

[0029] Specifically, a foot pedal 342 is fixedly connected to the surface of the column 341. There are two foot pedals 342, which are fixed to the columns 341 on both sides respectively.

[0030] In this embodiment: by setting up a footboard 342, when maintenance personnel lower the ladder 36 to contact the ground, they step on the footboard 342. After the footboard 342 is subjected to force, it drives the column 341 to move downward. The column 341 applies pressure to insert the tapered rod 343 into the ground, thereby increasing the stability of the connection between the ladder 36 and the ground, assisting maintenance personnel to climb the power tower safely, and ensuring that the ladder 36 will not shake or shift due to force during use.

[0031] Working principle: By setting up the climbing device 3, when maintenance personnel reach the bottom of the power tower and need to access the top for repairs, the motor 33 is started. The motor 33 drives the round rod 31, which in turn drives the coiled rod 32 to rotate and lower the pull rope 310. As the pull rope 310 moves downward, the lower ladder 36 is unrestrained and slowly descends until the slider 37 abuts against the baffle 38. At this point, the spring 39 is compressed and deformed, cushioning the impact of the lower ladder 36's descent. Then, the lower ladder 36 and the upper ladder 35 can be used to climb to the top of the power tower. After maintenance is completed, the motor 33 drives the round rod 31 to drive the coil rod 32 to rewind the pull rope 310. Under the traction of the pull rope 310, the lower ladder 36 slowly moves upward and leaves the ground. At this time, it is difficult for unauthorized personnel to climb. By setting up the climbing device 3, maintenance personnel can easily and safely climb the tower, while also preventing unauthorized personnel from climbing. The pull rope 310 rewinding mechanism driven by the motor 33 allows the lower ladder 36 to be raised and lowered flexibly. It can be lowered for personnel to climb during maintenance and retracted after maintenance to prevent unauthorized personnel from touching it, thus taking into account both practicality and safety.

[0032] By setting up a grounding component 34, when the lower ladder 36 falls and contacts the ground, stepping on the pedal 342 causes the pedal 342 to exert force, which in turn drives the upright 341. The upright 341 applies pressure to the tapered rod 343, which then inserts into the ground, thereby increasing the stability of the lower ladder 36 and assisting maintenance personnel in climbing. By setting up the grounding component 34, the stability of the lower ladder 36 after landing is enhanced. When maintenance personnel step on the pedal 342, the upright 341 and the tapered rod 343 are inserted into the ground, providing stable support for climbing, preventing the lower ladder 36 from swaying or shifting during the climbing process, reducing the climbing risk for maintenance personnel, and ensuring work safety.

Claims

1. A long-span transmission tower, comprising a support (1), a frame (2), and a climbing device (3), characterized in that: The frame (2) is fixed on the upper surface of the support (1). The climbing device (3) is set in the inner wall of the support (1). The climbing device (3) includes an upper ladder (35). The upper ladder (35) is fixedly connected to the frame (2). The upper ladder (35) has grooves at both ends. The inner walls of the grooves at both ends of the upper ladder (35) are slidably connected to sliders (37). The surface of the sliders (37) is fixedly connected to a lower ladder (36). The upper surface of the frame (2) is fixedly connected to a motor (33). The driving end of the motor (33) is fixedly connected to a round rod (31). The end of the round rod (31) away from the motor (33) is rotatably connected to the frame (2). The surface of the round rod (31) is fixedly connected to a coil rod (32). The surface of the coil rod (32) is wound with a pull rope (310).

2. A long-span transmission tower according to claim 1, characterized in that: The upper surface of the upper ladder (35) has a rectangular hole, and the end of the pull rope (310) away from the winding rod (32) passes through the rectangular hole on the surface of the upper ladder (35) and is fixedly connected to the upper surface of the lower ladder (36).

3. A long-span transmission tower according to claim 2, characterized in that: The bottom of the upper ladder (35) is provided with a sliding hole, and a baffle (38) is slidably connected to the inner wall of the circular hole at the bottom of the upper ladder (35).

4. A long-span transmission tower according to claim 3, characterized in that: The baffle (38) is in contact with the sliding hole, and a spring (39) is fixedly connected to the lower surface of the baffle (38). The end of the spring (39) away from the baffle (38) is fixedly connected to the upper ladder (35).

5. A long-span transmission tower according to claim 1, characterized in that: The lower surface of the lower ladder (36) is provided with a grounding component (34), the grounding component (34) includes a column (341), the column (341) is fixedly connected to the lower surface of the lower ladder (36), and a tapered rod (343) is fixedly connected to the lower surface of the column (341).

6. A long-span transmission tower according to claim 5, characterized in that: There are two columns (341), which are respectively set at both ends of the lower ladder (36).

7. A long-span transmission tower according to claim 6, characterized in that: The surface of the column (341) is fixedly connected with a pedal (342), and there are two pedals (342), which are respectively fixed on the columns (341) on both sides.

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