Power transmission line angle steel tower backup protection rope hanging device and method

Abstract

The invention provides a power transmission line angle steel tower backup protection rope hanging method, and belongs to the technical field of power transmission line overhauling. A traction rope, a backup protection rope and a magnetic attraction trolley are included, the tail end of the traction rope is connected with the head end of the backup protection rope, a pulley is rotationally connected to the front end of the magnetic attraction trolley, and the head end of the traction rope is wound around the pulley; a fixing mechanism is further arranged on the magnetic attraction trolley, and the magnetic attraction trolley is connected with the angle steel tower through the fixing mechanism to form a backup protection rope hanging point. An unmanned aerial vehicle is not needed for hanging, the hanging point of the hook does not need to be repeatedly adjusted, the operation difficulty is low, and the hanging efficiency of the backup protection rope can be effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power transmission line maintenance, and in particular relates to a device and method for hanging a backup protection rope for an angle steel tower of a power transmission line. Background Art

[0002] In the construction of overhead transmission lines, angle steel towers are often used as supporting structures for overhead transmission lines. Angle steel towers are lattice-type iron towers composed of angle steel components. They have the advantages of high strength and easy manufacturing and are widely used. Overhead transmission lines often need to be inspected and maintained. Before the inspection, workers first climb up the angle steel tower using climbing spikes and then conduct inspections of the transmission lines. During the climbing process, workers need to be protected to avoid safety accidents.

[0003] Currently, the most commonly used climbing protection device is a large hook, which uses a closed hook to maintain a connection with the tower material. Two hooks are used alternately to ensure that the climber is always connected to the tower and protected. However, this method requires the operator to repeatedly adjust the hook attachment point during the climb, doubling the climbing distance, increasing the difficulty of operation, and seriously draining the operator's physical strength.

[0004] A method using an insulated drone-mounted rope to hang a backup safety rope from the ground conductor, combined with a buffered self-locking device, provides backup protection for climbers. This method eliminates the need for repeated adjustment of the hook's hook point. However, this method has the following issues: operating a drone near power lines is difficult, requires high operator requirements, and can easily cause property damage; hanging the rope directly from the ground conductor can easily cause rope wear. Summary of the Invention

[0005] In response to the defects or shortcomings in the existing technology, the present invention provides a device and method for hanging a backup protection rope for a transmission line angle steel tower. It does not require a drone for hanging, nor does it require repeated adjustment of the hanging point of the hook. It has low operation difficulty and can effectively improve the efficiency of hanging the backup protection rope.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In the first aspect, an embodiment of the present invention provides a backup protection rope hanging device for an angle steel tower of a transmission line, comprising a traction rope, a backup protection rope and a magnetic trolley, wherein the tail end of the traction rope is connected to the head end of the backup protection rope, the front end of the magnetic trolley is rotatably connected to a pulley, the head end of the traction rope is wound around the pulley, and a fixing mechanism is also provided on the magnetic trolley, which is connected to the angle steel tower through the fixing mechanism to form a backup protection rope hanging point.

[0007] Furthermore, the fixing mechanism includes a metal shaft, two of which are symmetrically arranged on the mounting block, a first gear is fixed to one end of the metal shaft close to the mounting block, the first gear is rotatably connected to the mounting block, a rack is provided between the two first gears, and the rack is respectively engaged with the two first gears.

[0008] Furthermore, a fixed shaft is slidably connected to the metal shaft, and both the metal shaft and the fixed shaft are arc-shaped. A driving motor is provided at the end of the metal shaft away from the first gear, and a second gear is fixedly connected to the output shaft of the driving motor. External teeth are provided on the side wall of the fixed shaft close to the second gear, and the external teeth are engaged with the second gear.

[0009] In a second aspect, an embodiment of the present invention provides a method for hanging a backup protection rope for an angle steel tower of a transmission line, using the above-mentioned device for hanging a backup protection rope for an angle steel tower of a transmission line, comprising the following steps: Connect the tail end of the traction rope to the head end of the backup protection rope, and pass the head end of the traction rope around the top pulley of the magnetic trolley; Use the magnetic trolley to drive the traction rope to the set position of the tower, and release the fixing mechanism to fix the magnetic trolley to the tower; Pull the traction rope downward until the backup safety rope passes over the pulley, connect the metal buckle to the backup safety rope on the ground, and pass the first end of the traction rope through the metal buckle; Continue to pull the traction rope until the metal buckle and the backup safety rope form a hanging point at the magnetic trolley, completing the installation of the backup safety rope.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention connects the traction rope with the backup protection rope, and uses a magnetic trolley to transport the traction rope to the set position of the angle steel tower. The magnetic trolley, the angle steel tower and the metal buckle are used to form a stable hanging point for the backup protection rope, which can effectively protect workers performing high-altitude operations. The use of the magnetic trolley to hang the backup protection rope is less difficult, thereby improving the efficiency of hanging the backup protection rope. The backup protection rope is not connected to the ground wire, thereby avoiding rope wear.

[0011] 2. The present invention uses a magnetic trolley to hang the backup safety rope, which does not require a drone to hang it, nor does it need to repeatedly adjust the hanging point of the hook. The operation difficulty is low, and the efficiency of hanging the backup safety rope can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a connection diagram of the backup protection rope hanging device in Example 1 of the present invention; Figure 2 This is a structural diagram of the magnetic trolley in Example 1 of the present invention; Figure 3This is a schematic diagram of the fixing mechanism structure in Example 1 of the present invention; Figure 4 This is a diagram showing the connection between the magnetic trolley and the tower in the first embodiment of the present invention; Figure 5 This is a flow chart of a method for installing a backup protection rope in Embodiment 2 of the present invention; Figure 6 This is a diagram showing the fixed state of the backup protection rope in the second embodiment of the present invention; Among them, 1. Angle steel tower; 101. Main material; 102. Diagonal material; 2. Traction rope; 3. Backup protection rope; 4. Magnetic trolley; 401. Metal shaft; 402. Mounting block; 403. First gear; 404. Rack; 405. Fixed shaft; 406. Drive motor; 407. Second gear; 5. Pulley; 6. Metal buckle; 7. Climbing self-locking device; 8. Hanging ring. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Example 1 A typical embodiment of the present invention is as follows Figure 1 As shown, a backup protection rope hanging device for a transmission line angle steel tower includes a traction rope 2, a backup protection rope 3, and a magnetic trolley 4. The traction rope 2 and backup protection rope 3 are twice as long as the tower, and the tail end of the traction rope 2 is connected to the head end of the backup protection rope 3. The magnetic trolley 4 is a common magnetic trolley on the market. Its built-in magnet attracts the trolley 4 to the main material 101 of the angle steel tower 1 and can move along the main material 101 toward the top of the angle steel tower 1.

[0015] like Figure 2 As shown, the front end of the magnetic trolley 4 is rotatably connected to the pulley 5, and a rope channel is provided inside the magnetic trolley 4. The two ends of the rope channel respectively pass through the top and bottom ends of the magnetic trolley 4. The head end of the traction rope 2 enters the rope channel from the bottom end of the magnetic trolley 4, and passes through the top end of the magnetic trolley 4 to bypass the pulley 5.

[0016] By connecting the tail end of the traction rope 2 with the head end of the backup protection rope 3 and passing the head end of the traction rope 2 around the magnetic trolley 4, the load on the magnetic trolley 4 during its upward movement along the tower can be reduced, thereby improving the stability of the trolley during its movement.

[0017] The magnetic trolley 4 is also provided with a fixing mechanism, which realizes the fixed connection between the magnetic trolley 4 and the angle steel tower 1. Specifically, Figure 3As shown, the fixing mechanism includes a metal shaft 401, and there are two metal shafts 401. The two metal shafts 401 are symmetrically arranged on the mounting block 402. The metal shaft 401 is arc-shaped. A first gear 403 is fixed to one end of the metal shaft 401 close to the mounting block 402. The first gear 403 is rotatably connected to the mounting block 402. A rack 404 is provided between the two first gears 403. The rack 404 is respectively engaged with the two first gears 403. The end of the rack 404 is connected to a linear motor. The linear motor is installed on the mounting block 402. The output shaft of the linear motor is connected to the rack 404. The rack 404 is driven to move by the linear motor. Since the rack 404 is respectively engaged with the two first gears 403, the two metal shafts 401 can rotate around the axis of the first gear 403.

[0018] The metal shaft 401 is hollow, and one end away from the first gear 403 is open. The metal shaft 401 is slidingly connected to the fixed shaft 405. Specifically, the top and bottom surfaces of the metal shaft 401 are provided with protrusions, and the protrusions are arranged along the length of the metal shaft 401. The top and bottom surfaces of the fixed shaft 405 are provided with grooves, and the grooves are arranged along the length of the fixed shaft 405. The grooves are adapted to the protrusions, thereby realizing a sliding connection between the fixed shaft 405 and the metal shaft 401.

[0019] A driving motor 406 is provided at one end of the metal shaft 401 away from the first gear 403. A second gear 407 is fixedly connected to the output shaft of the driving motor 406. External teeth are provided on the side wall of the fixed shaft 405 close to the second gear 407. The second gear 407 extends into the interior of the metal shaft 401 and meshes with the external teeth. The second gear 407 is driven to rotate by the driving motor 406, and the second gear 407 meshes with the external teeth, thereby achieving relative sliding between the metal shaft 401 and the fixed shaft 405. Figure 4 As shown, after the metal shaft 401 and the fixed shaft 405 form a semicircular ring, the linear motor drives the rack 404 to rotate, so that the two semicircular rings are enclosed to form a closed ring, which is then put on the main material 101 of the angle steel tower 1. The closed ring is connected to the closed structure formed by the main material 101 of the pole tower and the oblique material 102 to form a stable hanging point. The traction rope 2 is pulled to make the backup protection rope 3 pass around the hanging point, completing the hanging of the backup protection rope 3.

[0020] The present invention utilizes the magnetic trolley 4 to hang the backup protection rope 3, does not require a drone for hanging, and does not require repeated adjustment of the hanging point of the hook. The operation difficulty is low and the hanging efficiency of the backup protection rope 3 can be effectively improved.

[0021] Example 2 This embodiment provides a method for hanging a backup protection rope for an angle steel tower of a transmission line, using a device for hanging a backup protection rope for an angle steel tower of a transmission line as described in Example 1. Figure 5 As shown, the following steps are included: Step 1: Connect the tail end of the traction rope to the head end of the backup protection rope, and pass the head end of the traction rope around the top pulley of the magnetic trolley.

[0022] Place an insulating moisture-proof canvas on the ground on one side of the angle steel tower 1 with the foot nails, and place the traction rope 2 and the backup protection rope 3 on the canvas. The lengths of the traction rope 2 and the backup protection rope 3 are both twice the height of the tower. Connect the tail end of the traction rope 2 with the head end of the backup protection rope 3, pass the head end of the traction rope 2 around the top pulley 5 of the magnetic trolley 4, and hold the head end of the traction rope 2 in the hands of the ground staff.

[0023] In this embodiment, the magnetic trolley 4 adopts the common magnetic trolley on the market. The trolley can be adsorbed on the main material 101 of the angle steel tower 1 by magnetic force, and the magnetic trolley 4 can be controlled to move along the main material 101 of the angle steel tower 1 by a remote control device. A pulley 5 is provided at the top of the magnetic trolley 4, and a rope channel is provided inside the magnetic trolley 4. The two ends of the rope channel are respectively located at the top and bottom of the magnetic trolley 4. The head end of the traction rope 2 enters the rope channel from the bottom end of the magnetic trolley 4 and passes around the pulley 5 from the top end of the magnetic trolley 4. The rope channel can ensure that the position of the traction rope 2 is fixed to prevent the traction rope 2 from shaking and thus detaching from the pulley 5.

[0024] Step 2: Use the magnetic trolley to drive the traction rope to the set position of the tower, and release the fixing mechanism to fix the magnetic trolley to the tower; A magnetic trolley 4 is placed on the main material 101 of the angle steel tower 1 on the side with the foot nails. The magnetic trolley 4 is controlled by a remote control device to move along the main material 101 of the angle steel tower 1 to a set position. A fixing mechanism is provided on the magnetic trolley 4, which fixes the magnetic trolley 4 at the connection between the main material 101 of the angle steel tower 1 and the oblique material 102 to form a stable hanging point.

[0025] Specifically, the fixing mechanism is connected to the control device located inside the body of the magnetic trolley 4. When it reaches the set position, the fixing mechanism is controlled by the wireless remote control device to form a closed ring. The closed ring is sleeved on the outside of the pole tower main material 101. The closed ring is supported and limited by the pole tower oblique material 102 to prevent the magnetic trolley 4 from slipping, thereby realizing the fixed connection between the angle steel tower 1 main material 101 and the magnetic trolley 4.

[0026] By hanging the backup protection rope 3 through the magnetic trolley 4, the accuracy of the hanging point position can be guaranteed, and the closed ring formed by the fixing mechanism is connected to the main material 101 of the angle steel tower 1, which can ensure the firmness of the hanging point. Compared with setting the hanging point on a drone, the operation is simple.

[0027] Step 3: Pull the traction rope downward until the backup safety rope passes around the pulley, connect the metal buckle to the backup safety rope on the ground, and pass the first end of the traction rope through the metal buckle.

[0028] Pull the traction rope 2 downward to drive the backup protection rope 3 to bypass the pulley 5. When the head end of the backup protection rope 3 reaches the pulley 5 position, tie a knot on the backup protection rope 3 on the ground to fix the backup protection rope 3 to the metal buckle 6, and pass the head end of the traction rope 2 through the metal buckle 6 from top to bottom.

[0029] Step 4: Continue to pull the traction rope until the metal buckle and the backup safety rope form a hanging point at the magnetic trolley, completing the installation of the backup safety rope.

[0030] Continue to pull the traction rope 2 downward, and the metal buckle 6 moves upward under the drive of the backup protection rope 3 until it reaches the position of the magnetic trolley 4, and the metal buckle 6 and the rope form a stable hanging point at the magnetic trolley 4.

[0031] After the backup safety rope 3 is hung, the ground staff performs an impact test on the backup safety rope 3 to ensure the safety of the hanging point.

[0032] After the impact test is completed, Figure 6 As shown, the climbing self-locking device 7 is installed on one side of the head end of the backup safety rope 3, and the hanging ring 8 on the chest of the climbing worker's safety belt is connected to the climbing self-locking device 7. During the operation, the climber climbs up with both hands holding the foot nails of the angle steel tower 1. The climbing self-locking device 7 is used to connect the climbing worker and the backup safety rope 3 to provide backup protection during the worker's climbing process.

[0033] The present invention connects the traction rope with the backup protection rope, and uses a magnetic trolley to transport the traction rope to the set position of the angle steel tower, and uses the magnetic trolley, the angle steel tower and the metal buckle to form a stable hanging point for the backup protection rope, which can effectively protect workers performing high-altitude operations. The use of the magnetic trolley to hang the backup protection rope has low operating difficulty, thereby improving the efficiency of hanging the backup protection rope. The backup protection rope is not connected to the ground wire, thereby avoiding rope wear.

[0034] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A device for hanging backup protection ropes for angle steel towers of power transmission lines, characterized in that: It includes a traction rope, a backup protection rope and a magnetic trolley. The tail end of the traction rope is connected to the head end of the backup protection rope. The front end of the magnetic trolley is rotatably connected to a pulley. The head end of the traction rope is wound around the pulley. The magnetic trolley is also provided with a fixing mechanism, which is connected to the angle steel tower through the fixing mechanism to form a hanging point for the backup protection rope.

2. A backup protection rope hanging device for an angle steel tower of a power transmission line according to claim 1, characterized in that: The fixing mechanism includes a metal shaft, two of which are symmetrically arranged on the mounting block. A first gear is fixed to one end of the metal shaft close to the mounting block. The first gear is rotatably connected to the mounting block. A rack is provided between the two first gears, and the rack is respectively engaged with the two first gears.

3. A backup protection rope hanging device for an angle steel tower of a power transmission line according to claim 2, characterized in that: A fixed shaft is slidably connected to the metal shaft, and both the metal shaft and the fixed shaft are arc-shaped. A driving motor is provided at the end of the metal shaft away from the first gear, and a second gear is fixedly connected to the output shaft of the driving motor. External teeth are provided on the side wall of the fixed shaft close to the second gear, and the external teeth are engaged with the second gear.

4. A method for hanging a backup protection rope for an angle steel tower of a power transmission line, using a device for hanging a backup protection rope for an angle steel tower of a power transmission line according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: Connect the tail end of the traction rope to the head end of the backup protection rope, and pass the head end of the traction rope around the top pulley of the magnetic trolley; Step 2: Use the magnetic trolley to drive the traction rope to the set position of the tower, and release the fixing mechanism to fix the magnetic trolley to the tower; Step 3: Pull the traction rope downward until the backup safety rope passes over the pulley, connect the metal buckle to the backup safety rope on the ground, and pass the first end of the traction rope through the metal buckle; Step 4: Continue to pull the traction rope until the metal buckle and the backup safety rope form a hanging point on the magnetic trolley, completing the installation of the backup safety rope.

5. A method for hanging backup protection ropes for angle steel towers of power transmission lines according to claim 4, characterized in that: In step 1, connect the tail end of the traction rope to the head end of the backup protection rope, and pass the head end of the traction rope around the top pulley of the magnetic trolley. Specifically: Place an insulating moisture-proof canvas on the ground on one side of the angle steel tower with foot nails, and place a traction rope and a backup protection rope on the canvas. The length of the traction rope and the backup protection rope are both twice the height of the tower. Connect the tail end of the traction rope with the head end of the backup protection rope, pass the head end of the traction rope around the top pulley of the magnetic trolley, and hold the head end of the traction rope in the hands of the ground staff.

6. A method for hanging backup protection ropes for angle steel towers of power transmission lines according to claim 4, characterized in that: In step 2, the magnetic trolley is used to drive the traction rope to the set position of the tower, and the fixing mechanism is released to fix the magnetic trolley to the tower. Specifically: A magnetic trolley is placed on the main material of the tower on the side of the angle steel tower with foot nails. The magnetic trolley is controlled by a remote control device to move along the main material of the tower to the set position. A fixing mechanism is provided on the magnetic trolley, which fixes the magnetic trolley at the connection between the main material of the steel tower and the diagonal material to form a stable hanging point.

7. A method for hanging backup protection ropes for angle steel towers of power transmission lines according to claim 4, characterized in that: In step 3, pull the traction rope downward until the backup protection rope passes over the pulley, connect the metal buckle to the backup protection rope on the ground, and pass the first end of the traction rope through the metal buckle. Specifically: Pull the traction rope downward to drive the backup protection rope to pass around the pulley. When the head end of the backup protection rope reaches the pulley position, tie a knot on the backup protection rope on the ground to fix the backup protection rope to the metal buckle, and pass the head end of the traction rope through the metal rope from top to bottom.

8. A method for hanging backup protection ropes for angle steel towers of power transmission lines according to claim 4, characterized in that: In step 4, continue to pull the traction rope until the metal buckle and the backup safety rope form a hanging point on the magnetic trolley, completing the hanging of the backup safety rope. Specifically: Continue to pull the traction rope downwards, and the metal buckle will move upwards driven by the backup safety rope until it reaches the position of the magnetic trolley. The metal buckle and the rope will form a stable hanging point at the magnetic trolley, completing the installation of the backup safety rope.

9. A method for hanging backup protection ropes for angle steel towers of power transmission lines according to claim 8, characterized in that: After the backup safety rope is installed, the ground staff will conduct an impact test on the backup safety rope.

10. A method for hanging backup protection ropes for angle steel towers of power transmission lines according to claim 9, characterized in that: After the impact test is completed, the climbing self-locking device is placed on one side of the head end of the backup protection rope, and the hanging ring on the chest of the climbing worker's safety belt is connected to the climbing self-locking device.

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