Falling protector for electric power iron tower

Abstract

The falling protector comprises a shell, a rotating column is rotationally connected into the shell, a connecting bent rod is fixedly connected to one side of the rotating column, an opening for the connecting bent rod to move is formed in the side wall of the shell, the end of the connecting bent rod penetrates through the opening and is located on the outer side of the shell, and a fixing ring is fixedly connected to the end, located on the outer side of the shell, of the connecting bent rod. An anti-falling assembly is arranged on the bottom side of the rotating column and located in the shell, through grooves allowing the rope to penetrate through are formed in the top and the bottom of the shell and the rotating column, and the rope penetrates through the anti-falling assembly. The falling protector is simple in structure, rapid in response, convenient to use and capable of better protecting the safety of workers.

Description

Technical Field

[0001] The invention relates to the technical field of fall arresters, in particular to a fall arrester for an electric power tower. Background Art

[0002] When performing power work such as power transmission, substation, and power distribution, it is often necessary to perform aerial work. In order to ensure the personal safety of the workers and protect the power facilities at the same time, a fall arrester is often needed. When a worker slips and falls, the locking mechanism in the fall arrester is locked to stop the worker from falling. However, the existing fall arrester has a simple structure and low sensitivity. The workers working at high altitudes will have a large displacement when falling, and the locking structure needs to be disassembled and reset after being triggered, which makes it complicated and cumbersome to use. Therefore, there is an urgent need for a fall arrester for power towers that has stable locking, is easy to reset, and is convenient to use. Summary of the invention

[0003] The purpose of the present invention is to provide a fall arrester for an electric power tower to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a fall arrester for an electric power tower, comprising a shell, a rotating column rotatably connected inside the shell, a connecting bent rod fixedly connected to one side of the rotating column, an opening for the connecting bent rod to move is formed on the side wall of the shell, the end of the connecting bent rod passes through the opening and is located outside the shell, a fixing ring is fixedly connected to one end of the connecting bent rod located outside the shell, an anti-fall assembly is arranged on the bottom side of the rotating column, the anti-fall assembly is located in the shell, and through grooves for ropes to pass through are formed on the top and bottom of the shell and the rotating column, and the rope passes through the anti-fall assembly.

[0005] Preferably, the anti-fall assembly includes two first rotating shafts rotatably connected to the shell, an eccentric wheel is fixedly connected to the first rotating shaft, the two eccentric wheels are symmetrically arranged, a gap is left between the eccentric wheel and the rope, and a transmission assembly is installed between the rotating column and the eccentric wheel.

[0006] Preferably, the transmission assembly includes a transmission housing located outside the housing and fixedly connected to the housing, two second rotating shafts are rotatably connected in the transmission housing, a second gear is fixedly connected to the second rotating shaft, the two second gears are meshed with each other, the first rotating shaft passes through the housing and is located in the transmission housing, one end of the first rotating shaft located in the transmission housing is fixedly connected to the first gear, the two first gears are meshed with each other, any second gear is meshed with any first gear, the second rotating shaft where the other second gear is located passes through the housing and is located in the housing, one end of the second rotating shaft located in the housing is fixedly connected to the third gear, a fan-shaped block is fixedly connected to the side of the rotating column away from the connecting bent rod, and a tooth groove meshing with the third gear is opened on the side of the fan-shaped block.

[0007] Preferably, a limiting block is fixedly connected inside the shell, the limiting block is located above the connecting bent rod and is arranged in contact with the connecting bent rod, and a tension spring is fixedly connected between the top wall of the shell and the connecting bent rod.

[0008] Preferably, a plurality of rotating wheels are rotatably connected in the housing, the plurality of rotating wheels are symmetrically arranged on both sides of the rope and are arranged in contact with the rope, and stripes are provided on the circumference of the rotating wheels to increase friction between the rotating wheels and the rope.

[0009] Preferably, a plurality of vertical grooves are provided on the peripheral side of the eccentric wheel along its axial direction.

[0010] The present invention discloses the following technical effects: the present invention connects the protective belt on the worker with the fixed ring, and when the worker falls, the fixed ring is pulled downward, and the connecting bent rod drives the rotating column to rotate, thereby driving the anti-falling component to move, so that the anti-falling component clamps the rope and does not continue to fall; after the worker stabilizes and climbs upward, the connecting bent rod and the anti-falling component can be automatically reset, and there is no need to disassemble and reset, which is convenient to use. The anti-falling device of the present invention has a simple structure, rapid response, and is convenient to use, and can better protect the safety of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of the structure of the fall arrester of the present invention;

[0013] Figure 2 It is a schematic diagram of the transmission housing structure;

[0014] Figure 3 It is a schematic diagram of the structure of the rotating wheel in the second embodiment;

[0015] Among them: 1. Shell; 2. Rotating column; 3. Connecting bent rod; 4. Opening; 5. Fixed ring; 6. Through slot; 7. First rotating shaft; 8. Eccentric wheel; 9. Transmission housing; 10. Second rotating shaft; 11. Second gear; 12. First gear; 13. Third gear; 14. Fan-shaped block; 15. Limit block; 16. Tension spring; 17. Rotating wheel; 18. Support column; 19. Check slot; 20. Accommodating slot; 21. Card strip; 22. Compression spring; 23. Magnetic block; 24. Electromagnet; 25. Battery; 26. Switch; 27. Limit rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Embodiment 1:

[0019] Reference Figure 1-2 The present embodiment provides a fall arrester for an electric power tower, comprising a housing 1, a rotating column 2 is rotatably connected in the housing 1, a connecting bent rod 3 is fixedly connected to one side of the rotating column 2, an opening 4 for the connecting bent rod 3 to move is provided on the side wall of the housing 1, the end of the connecting bent rod 3 passes through the opening 4 and is located outside the housing 1, a fixing ring 5 is fixedly connected to one end of the connecting bent rod 3 located outside the housing 1, an anti-fall assembly is provided on the bottom side of the rotating column 2, the anti-fall assembly is located in the housing 1, and a through groove 6 for a rope to pass through is provided on the top and bottom of the housing 1 and the rotating column 2, and the rope passes through the anti-fall assembly. By connecting the protective belt on the worker with the fixing ring 5, when the worker falls, the fixing ring 5 is pulled downward, the connecting bent rod 3 drives the rotating column 2 to rotate, thereby driving the anti-fall assembly to move, so that the anti-fall assembly clamps the rope and does not continue to fall; after the worker stabilizes himself and climbs upward, the connecting bent rod 3 and the anti-fall assembly can be automatically reset, and there is no need to disassemble and reset, which is convenient to use.

[0020] Further optimization scheme, the anti-fall assembly includes two first rotating shafts 7 rotatably connected to the housing 1, and an eccentric wheel 8 is fixedly connected to the first rotating shaft 7. The two eccentric wheels 8 are symmetrically arranged, and a gap is left between the eccentric wheel 8 and the rope. A transmission assembly is installed between the rotating column 2 and the eccentric wheel 8. When a worker falls, he will pull down the connecting curved rod 3, and the connecting curved rod 3 drives the rotating column 2 to rotate, and the eccentric wheel 8 is driven to rotate through the transmission assembly. The two eccentric wheels 8 will squeeze the rope during the rotation process, thereby achieving locking to prevent the worker from falling further.

[0021] A further optimized solution is that the transmission assembly includes a transmission shell 9 located outside the shell 1 and fixedly connected to the shell 1, two second rotating shafts 10 are rotatably connected in the transmission shell 9, and a second gear 11 is fixedly connected to the second rotating shaft 10, and the two second gears 11 are meshed with each other. The first rotating shaft 7 passes through the shell 1 and is located in the transmission shell 9, and one end of the first rotating shaft 7 located in the transmission shell 9 is fixedly connected to the first gear 12, and the two first gears 12 are meshed with each other, and any second gear 11 is meshed with any first gear 12, and the second rotating shaft 10 where the other second gear 11 is located passes through the shell 1 and is located in the shell 1, and one end of the second rotating shaft 10 located in the shell 1 is fixedly connected to the third gear 13, and a fan-shaped block 14 is fixedly connected to the side of the rotating column 2 away from the connecting bent rod 3, and a tooth groove meshing with the third gear 13 is opened on the side of the fan-shaped block 14. The rotating column 2 is driven to rotate by connecting the bent rod 3, and then the sector block 14 is driven to rotate. The sector block 14 drives the third gear 13 to rotate, and then the second gear 11 is driven to rotate. The transmission of the second gear 11 and the first gear 12 drives the two first gears 12 to rotate, thereby driving the two first rotating shafts 7 to rotate, thereby controlling the rotation of the eccentric wheel 8.

[0022] In a further optimized solution, a limit block 15 is fixedly connected inside the housing 1, the limit block 15 is located above the connecting bent rod 3 and is arranged in contact with the connecting bent rod 3, and a tension spring 16 is fixedly connected between the top wall of the housing 1 and the connecting bent rod 3. The limit block 15 can prevent the movement of the connecting bent rod 3 during the upward climbing process, and the tension spring 16 can assist the connecting bent rod 3 to fit with the limit block 15 to ensure its stability.

[0023] According to a further optimization scheme, a plurality of rotating wheels 17 are rotatably connected in the housing 1, and the plurality of rotating wheels 17 are symmetrically arranged on both sides of the rope and in contact with the rope. The peripheral sides of the rotating wheels 17 are provided with stripes for increasing friction with the rope.

[0024] To further optimize the solution, a plurality of vertical grooves are provided on the circumference of the eccentric wheel 8 along the axial direction thereof to increase the friction between the eccentric wheel 8 and the rope to ensure locking.

[0025] The working process of this embodiment is as follows: when in use, the worker installs the fall arrester on the rope, then installs the strap of the worker's safety clothing on the fixing ring 5, and then climbs up. During the climbing process, the strap pulls the fixing ring 5 upward, and the connecting curved rod 3 does not move under the action of the limit block 15, and the two eccentric wheels 8 are kept separated from the rope, thereby ensuring normal climbing. When the worker slips and falls, the strap pulls the fixing ring 5 downward, and the connecting curved rod 3 rotates downward to drive the rotating column 2 to rotate. During the rotation of the rotating column 2, the rope will be twisted to increase the friction between the rope and the rotating column 2, and the fan-shaped block 14 will be driven to move. When the fan-shaped block 14 moves, it drives the third gear 13 to rotate, and then drives the two first rotating shafts 7 to rotate through the transmission of the first gear 12 and the second gear 11, thereby driving the two eccentric wheels 8 to rotate, and the two eccentric wheels 8 are used to squeeze the rope to prevent the worker from continuing to fall, and because the greater the pulling force on the connecting curved rod 3, the greater the pressure of the eccentric wheel 8 on the rope, thereby ensuring stable locking. When the worker continues to climb upward after stabilizing himself, the connecting bent rod 3 rotates upward under the action of the upward pulling force and the tension spring 16, so that the rope is no longer limited.

[0026] Embodiment 2:

[0027] Reference Figure 3The difference between this embodiment and the first embodiment is that a through slot 6 is provided in any group of two opposite rotating wheels 17, a support column 18 is fixedly connected in the housing 1, the support column 18 is located in the through slot 6, a plurality of non-return grooves 19 are provided on the inner wall of the through slot 6, a plurality of receiving grooves 20 are provided on the peripheral side of the support column 18, the receiving grooves 20 are arranged corresponding to the non-return grooves 19, a clip strip 21 adapted to the non-return groove 19 is rotatably connected in the receiving groove 20, and a compression spring 2 is fixedly connected between one end of the clip strip 21 and the bottom wall of the receiving groove 20 2, the other end of the clamping strip 21 is fixedly connected with a magnetic block 23, an electromagnet 24 is fixedly connected with the magnetic block 23 in the receiving groove 20, and the magnetic pole of the electromagnet 24 is the same as that of the magnetic block 23, a battery 25 is fixedly connected with the shell 1, and the battery 25 is electrically connected with the electromagnet 24, and a switch 26 for controlling the electromagnet 24 is installed on the shell 1, and the switch 26 is electrically connected with the battery 25; a limit rod 27 is fixedly connected with the receiving groove 20, and the limit rod 27 is arranged corresponding to one end of the clamping strip 21 connected with the compression spring 22. When the worker climbs up, the magnetic block 23, under the action of the electromagnet 24, drives one end of the clip 21 to tilt up and cooperate with the non-return slot 19. During the upward climbing process, the rotating wheel 17 rotates along the rope, and the non-return slot 19 continuously squeezes the clip 21 and does not lock. When the worker falls, the rotation direction of the rotating wheel 17 is opposite to the climbing process. The clip 21 presses against the non-return slot 19 so that the rotating wheel 17 no longer rotates, thereby causing friction between the rotating wheel 17 and the rope, which can further increase the anti-fall performance of the fall arrester. By controlling the electromagnet 24 through the switch 26, the magnetism can be turned off when the worker crawls down, so that the clip 21 is separated from the non-return slot 19. The limit rod 27 can limit the clip 21 to ensure that the clip 21 is located in the receiving groove 20 and does not contact the non-return slot 19.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A fall arrester for an electric power tower, characterized in that: The invention comprises a shell (1), wherein a rotating column (2) is rotatably connected inside the shell (1), a connecting bent rod (3) is fixedly connected to one side of the rotating column (2), an opening (4) for the connecting bent rod (3) to move is provided on the side wall of the shell (1), an end of the connecting bent rod (3) passes through the opening (4) and is located outside the shell (1), one end of the connecting bent rod (3) located outside the shell (1) is fixedly connected to a fixing ring (5), an anti-falling component is provided on the bottom side of the rotating column (2), the anti-falling component is located inside the shell (1), and a through groove (6) for a rope to pass through is provided on the top and bottom of the shell (1) and the rotating column (2), and the rope passes through the anti-falling component.

2. The anti-fall device for electric power tower according to claim 1, characterized in that: The anti-fall component comprises two first rotating shafts (7) rotatably connected to the housing (1), an eccentric wheel (8) being fixedly connected to the first rotating shaft (7), the two eccentric wheels (8) being symmetrically arranged, a gap being left between the eccentric wheels (8) and the rope, and a transmission component being installed between the rotating column (2) and the eccentric wheels (8).

3. The anti-fall device for electric power tower according to claim 2, characterized in that: The transmission assembly comprises a transmission housing (9) located outside the housing (1) and fixedly connected to the housing (1); two second rotating shafts (10) are rotatably connected inside the transmission housing (9); a second gear (11) is fixedly connected to the second rotating shaft (10); the two second gears (11) are meshed with each other; the first rotating shaft (7) passes through the housing (1) and is located inside the transmission housing (9); one end of the first rotating shaft (7) located inside the transmission housing (9) is fixedly connected to a first gear (12); the two first gears ( 12) are meshed with each other, any of the second gears (11) is meshed with any of the first gears (12), the second rotating shaft (10) where the other second gear (11) is located passes through the housing (1) and is located inside the housing (1), one end of the second rotating shaft (10) located inside the housing (1) is fixedly connected with a third gear (13), and a fan-shaped block (14) is fixedly connected to a side of the rotating column (2) away from the connecting bent rod (3), and a tooth groove meshing with the third gear (13) is provided on the side of the fan-shaped block (14).

4. The anti-fall device for electric power tower according to claim 1, characterized in that: A limit block (15) is fixedly connected inside the shell (1); the limit block (15) is located above the connecting bent rod (3) and is arranged in contact with the connecting bent rod (3); and a tension spring (16) is fixedly connected between the top wall of the shell (1) and the connecting bent rod (3).

5. The anti-fall device for electric power tower according to claim 1, characterized in that: A plurality of rotating wheels (17) are rotatably connected in the housing (1), and the plurality of rotating wheels (17) are symmetrically arranged on both sides of the rope and in contact with the rope. The circumference of the rotating wheel (17) is provided with stripes for increasing friction between the rotating wheel (17) and the rope.

6. The anti-fall device for electric power tower according to claim 2, characterized in that: A plurality of vertical grooves are provided on the peripheral side of the eccentric wheel (8) along the axial direction thereof.

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