Anti-falling device
By designing an anti-fall device for overhead transmission lines, the problem of lack of protection for staff during climbing is solved, and the effect of improving safety is achieved. The device includes a guide rail, a fixing assembly and a self-locker that secures the guide rail by a fastener and reduces the fall speed by using the frictional resistance of the self-locker.
Patent Information
- Application Number
- CN202421381458.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-17
AI Technical Summary
During the maintenance of overhead transmission lines, staff lack anti-fall protection measures when climbing the pole tower, resulting in insufficient safety.
A fall-proof device is designed, including guide rails, fixing components and self-locking devices. The guide rail is installed on the angle steel of the transmission line tower, the fixing assembly is fixed to the guide rail through the fastener, and the self-locker generates frictional resistance through the cam structure and the rotating arm, which is used to slow down the fall of the worker.
The device improves the safety of staff when climbing, reduces the falling speed through the friction resistance of the self-locking device, protects the safety of staff, and makes the guide rails conveniently installed on the angle steel.
Smart Images
Figure CN222804629U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of power transmission line maintenance, and more specifically, relates to an anti-falling device. Background Art
[0002] At present, in the process of overhead transmission line maintenance, climbing the pole tower is the first task that must be faced. However, the current operating line towers do not have safety protection measures for workers. Due to the high height of the towers, the workers will consume a lot of physical strength during the climbing process, and the lack of anti-fall protection measures will cause great psychological pressure on the workers. Therefore, it is particularly important to provide a safe, reliable, easy-to-carry and easy-to-install anti-fall device to protect the safety of workers. Utility Model Content
[0003] The utility model aims to provide a fall prevention device to solve the technical problems in the prior art that the safety of workers is insufficient during pole climbing and the fall prevention device is difficult to install.
[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an anti-falling device, comprising:
[0005] A guide rail is used to be installed on a transmission line tower and extends along the angle steel on the transmission line tower; the guide rail has a sliding portion and a fixing portion arranged along the length direction, and the fixing portion is provided with a plurality of connection holes arranged along the length direction;
[0006] A plurality of fixing components, corresponding one to one with the plurality of connecting holes; the fixing components include a first connecting rod, a second connecting rod and two fasteners, the first connecting rod and the second connecting rod are respectively arranged along two right-angled surfaces of the angle steel, and the upper ends are located on one side of the guide rail, the upper ends of the first connecting rod and the second connecting rod are both provided with a first mounting hole corresponding to the connecting hole; the lower ends of the first connecting rod are arranged around the angle steel and extend toward the second connecting rod, and the lower ends of the first connecting rod and the second connecting rod are both provided with a second mounting hole; the two fasteners are respectively fixedly installed on the upper and lower ends of the first connecting rod and the second connecting rod, and are used to fix the first connecting rod, the second connecting rod and the guide rail on the angle steel;
[0007] A self-locking device is slidably connected to the guide rail; the self-locking device is provided with a rotatably connected cam structure and a rotating arm fixedly connected to the cam structure; the rotating arm drives the cam structure to rotate so that the cam structure is squeezed on the guide rail to form friction resistance.
[0008] In a possible implementation, the upper ends of the first connecting rod and the second connecting rod are each provided with a vertically arranged first docking portion, the first docking portion is arranged parallel to the fixing portion; and the first mounting hole is opened on the first docking portion.
[0009] In a possible implementation manner, the two first docking portions are located on the same side of the fixing portion.
[0010] In a possible implementation, the lower end of the first connecting rod is horizontally bent to form a horizontal connecting rod, and the horizontal connecting rod is located below the angle steel and surrounds the angle steel; a second docking portion is provided at one end of the horizontal connecting rod away from the first connecting rod and at the lower end of the second connecting rod; and the second mounting hole is opened on the second docking portion.
[0011] In a possible implementation manner, the fastener includes a bolt and a nut.
[0012] In a possible implementation manner, a plurality of spare holes are provided on one side of the plurality of connection holes.
[0013] In a possible implementation, the plurality of connection holes are evenly spaced apart along the length direction of the guide rail.
[0014] In a possible implementation, the self-locking device further includes:
[0015] The mounting frame has a mounting groove at the lower end thereof for mounting in cooperation with the guide rail, and the mounting groove penetrates the mounting frame; the upper end surface of the mounting frame is provided with a long groove connected to the mounting groove;
[0016] There are two guide wheel groups, which are rotatably connected to the two opposite side walls of the mounting groove, and the axial direction of the guide wheel is perpendicular to the length direction of the guide rail; an accommodation spacing for accommodating the sliding part of the guide rail is provided between the guide wheel group and the top surface of the mounting groove, and the guide wheel is in contact with the lower end surface of the sliding part;
[0017] The cam structure is installed in the mounting groove and is rotatably connected to the mounting frame; the axial direction of the cam structure is perpendicular to the length direction of the guide rail and is located above the sliding part; the cam structure is provided with a friction surface that contacts the upper end surface of the sliding part; the rotating arm is passed through the long groove, and one end is fixedly connected to the cam structure, and the other end is located outside the mounting frame; the other end of the rotating arm is used to be connected to a safety rope.
[0018] In a possible implementation, the self-locking device also includes two support wheel groups that are rotatably connected to the two side walls opposite to the mounting groove, the support wheel is located above the guide wheel, and the axial direction is parallel to the axial direction of the guide wheel; the support wheel and the guide wheel are arranged to accommodate the accommodating spacing of the sliding part, and the support wheel is in contact with both sides of the upper end surface of the sliding part; grooves are provided on both side walls of the mounting groove, and the grooves are located between the guide wheel and the support wheel, and the guide wheel rotatably connected in the grooves, the axial direction of the guide wheel is perpendicular to the axial direction of the guide wheel and the length direction of the guide rail; the outer side surface of the guide wheel is in contact with the side surface of the sliding part.
[0019] In a possible implementation, the cam structure is provided with a rotating shaft rotatably connected to the mounting frame, and the self-locking device also includes a locking mechanism fixedly mounted on one side of the mounting frame, one end of the rotating shaft passes through the mounting frame and is connected to the locking mechanism, and the locking mechanism is used to limit and lock the rotating shaft and open the rotation; the locking mechanism includes a mounting box, a limit block slidably connected to the mounting box, and a push-pull rod connected to the limit block; a connecting port is provided on one side of the mounting box close to the mounting frame, and a sliding hole is provided on one end face, one end of the rotating shaft passes through the connecting port and is located in the mounting box, a limit groove is provided at one end of the rotating shaft, a limit protrusion is provided on the limit block and is installed in cooperation with the limit groove, and the limit protrusion is slidably connected to the limit groove; the push-pull rod is slidably connected to the sliding hole.
[0020] The beneficial effects of the anti-fall device provided by the utility model are as follows: compared with the prior art, the anti-fall device of the utility model, when used, installs the guide rail on the angle steel of the transmission line tower, and arranges it along the length direction of the angle steel; then fixes the guide rail with multiple fixing components, specifically, the first connecting rod and the second connecting rod are respectively arranged on the two right-angle surfaces of the angle steel, and the first connecting rod and the second connecting rod are symmetrically arranged, wherein the upper ends of the first connecting rod and the second connecting rod correspond to the fixing part of the guide rail, and are fixed by fasteners through the connecting hole and the two first mounting holes; and the lower ends of the first connecting rod and the second connecting rod are butted against each other, and are fixed by fasteners passing through the two second mounting holes, thereby With the help of multiple fixing assemblies composed of a first connecting rod, a second connecting rod and fasteners, the guide rail is stably and conveniently installed on the angle steel; finally, the self-locking device is slidably connected to the sliding part of the guide rail. When the staff climbs the pole, they use a safety rope to connect with the rotating arm. In the event of an accidental fall, the safety rope drives the rotating arm to rotate downward, thereby driving the cam structure to rotate. The cam structure and the sliding part of the guide rail are strongly supported to generate a large friction force, thereby causing the falling staff to form a deceleration effect, thereby protecting the staff; in this way, the safety of the staff climbing the pole is improved with the help of the self-locking device and the guide rail, and at the same time, the guide rail is conveniently and quickly fixed on the angle steel with the help of the fixing assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art 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.
[0022] Figure 1 The structure diagram of the anti-fall device provided by the embodiment of the utility model Figure 1 ;
[0023] Figure 2 The structure diagram of the anti-fall device provided by the embodiment of the utility model Figure 2 ;
[0024] Figure 3 The structure diagram of the anti-fall device provided by the embodiment of the utility model Figure 3 ;
[0025] Figure 4 A schematic diagram of the structure of the self-locking device provided in the embodiment of the utility model Figure 1 ;
[0026] Figure 5 A schematic diagram of the structure of the self-locking device provided in the embodiment of the utility model Figure 2 ;
[0027] Figure 6 A schematic diagram of the internal structure of a self-locking device provided by an embodiment of the utility model;
[0028] Figure 7 A schematic structural diagram of a cam structure and a rotating arm provided in an embodiment of the utility model.
[0029] Among them, the reference numerals in the figure are:
[0030] 1. Guide rail; 11. Sliding part; 12. Fixed part; 13. Connecting hole; 14. Spare hole; 2. Fixed assembly; 21. First connecting rod; 22. Second connecting rod; 23. Fastener; 24. First mounting hole; 25. Second mounting hole; 26. First docking part; 27. Horizontal connecting rod; 28. Second docking part; 3. Self-locking device; 31. Mounting frame; 32. Mounting groove; 33. Long groove; 34. Groove; 35. Guide wheel; 36. Guide wheel; 37. Accommodating spacing; 4. Cam structure; 41. Friction surface; 42. Rotating shaft; 43. Limiting groove; 44. Rotating arm; 5. Support wheel; 6. Locking mechanism; 61. Mounting box; 62. Limiting block; 63. Push-pull rod; 64. Limiting protrusion; 65. Sliding hole; 7. Angle steel. DETAILED DESCRIPTION
[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0033] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 cannot be understood as a limitation on the present invention.
[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0035] See also Figures 1 to 7 , the anti-fall device provided by the utility model is now described. An anti-fall device includes a guide rail 1, a fixing assembly 2 and a self-locking device 3. The guide rail 1 is used to be installed on a transmission line tower and extends along the angle steel 7 on the transmission line tower; the guide rail 1 has a sliding portion 11 and a fixing portion 12 arranged along the length direction, and the fixing portion 12 is provided with a plurality of connecting holes 13 arranged along the length direction; the number of the fixing assemblies 2 is multiple, and they correspond one to one to the plurality of connecting holes 13; the fixing assembly 2 includes a first connecting rod 21, a second connecting rod 22 and two fasteners 23, the first connecting rod 21 and the second connecting rod 22 are respectively arranged along two right-angled surfaces of the angle steel 7, and the upper ends are located on one side of the guide rail 1, and the upper ends of the first connecting rod 21 and the second connecting rod 22 are both provided with A first mounting hole 24 corresponding to the connecting hole 13; the lower end of the first connecting rod 21 is arranged around the angle steel 7 and extends toward the second connecting rod 22, and the lower ends of the first connecting rod 21 and the second connecting rod 22 are each provided with a second mounting hole 25; two fasteners 23 are respectively fixedly installed on the upper and lower ends of the first connecting rod 21 and the second connecting rod 22, and are used to fix the first connecting rod 21, the second connecting rod 22, and the guide rail 1 on the angle steel 7; the self-locking device 3 is slidably connected to the guide rail 1; the self-locking device 3 is provided with a rotatably connected cam structure 4 and a rotating arm 44 fixedly connected to the cam structure 4; the rotating arm 44 drives the cam structure 4 to rotate so that the cam structure 4 squeezes the guide rail 1 to form a friction resistance.
[0036] Compared with the prior art, the anti-fall device provided by the utility model is as follows: when in use, the guide rail 1 is installed on the angle steel 7 of the transmission line tower, and is arranged along the length direction of the angle steel 7; then a plurality of fixing components 2 are used to fix the guide rail 1, specifically, the first connecting rod 21 and the second connecting rod 22 are respectively arranged on the two right-angled surfaces of the angle steel 7, and the first connecting rod 21 and the second connecting rod 22 are symmetrically arranged, wherein the upper ends of the first connecting rod 21 and the second connecting rod 22 correspond to the fixing portion 12 of the guide rail 1, and are fixed by a fastener 23 through the connecting hole 13 and the two first mounting holes 24; and the lower ends of the first connecting rod 21 and the second connecting rod 22 are connected to each other, and are fixed by a fastener 23 passing through the two second mounting holes 25, thereby The fixing assembly 2 composed of a connecting rod 21, a second connecting rod 22 and a fastener 23 enables the guide rail 1 to be stably and conveniently installed on the angle steel 7; finally, the self-locking device 3 is slidably connected to the sliding part 11 of the guide rail 1, and the staff uses a safety rope to connect with the rotating arm 44 when climbing the pole. In the event of an accidental fall, the safety rope drives the rotating arm 44 to rotate downward, thereby driving the cam structure 4 to rotate. The cam structure 4 and the sliding part 11 of the guide rail 1 are strongly supported to generate a large friction force, thereby causing the falling staff to form a deceleration effect, thereby achieving the purpose of protecting the staff; in this way, the safety of the staff climbing the pole is improved with the help of the self-locking device 3 and the guide rail 1, and at the same time, the guide rail 1 is conveniently and quickly fixed on the angle steel 7 with the help of the fixing assembly 2.
[0037] The guide rail 1 is set as a T-shaped structure, the sliding part 11 and the fixing part 12 are both long strips, and the sliding part 11 and the fixing part 12 are vertically arranged. The triangular structure formed by the first connecting rod 21 and the second connecting rod 22 can be installed to accommodate angle steels 7 of different specifications.
[0038] See also Figures 1 to 3 As a specific embodiment of the anti-fall device provided by the utility model, the upper ends of the first connecting rod 21 and the second connecting rod 22 are both provided with a first docking portion 26 arranged vertically, and the first docking portion 26 is arranged in parallel with the fixing portion 12; the first mounting hole 24 is opened on the first docking portion 26; the upper ends of the first connecting rod 21 and the second connecting rod 22 need to be aligned with the fixing portion 12 of the guide rail 1, and then firmly installed together. Therefore, the first docking portion 26 is set at the upper ends of the first connecting rod 21 and the second connecting rod 22, and the two first docking portions 26 are parallel to or connected to one side of the fixing portion 12, and the first mounting hole 24 is opened on the first docking portion 26, and then the fastener 23 is used to pass through the connecting hole 13 and the two first mounting holes 24 to fix the fixing portion 12 and the two first docking portions 26 together; with the help of the two first docking portions 26, the first connecting rod 21, the second connecting rod 22 and the fixing portion 12 of the guide rail 1 are installed more firmly and reliably.
[0039] See also Figures 1 to 3 As a specific embodiment of the anti-fall device provided by the utility model, the two first docking portions 26 are located on the same side of the fixing portion 12, so that the first connecting rod 21 and the second connecting rod 22 can have a larger contact area and be more firmly installed when they are installed on the two right-angled surfaces of the angle steel 7. The two first docking portions 26 extend vertically upward, which makes it easier to dock and install them together accurately.
[0040] See also Figures 1 to 3 As a specific embodiment of the anti-fall device provided by the utility model, the lower end of the first connecting rod 21 is horizontally bent to form a horizontal connecting rod 27, and the horizontal connecting rod 27 is located below the angle steel 7 and is arranged around the angle steel 7; the horizontal connecting rod 27 is away from the end of the first connecting rod 21 and the lower end of the second connecting rod 22. A second docking portion 28 is provided; the second mounting hole 25 is opened on the second docking portion 28; the lower end of the first connecting rod 21 extends horizontally toward the second connecting rod 22 to form a horizontal connecting rod 27, and the angle steel 7 is surrounded by the horizontal connecting rod 27. At the same time, a second docking portion 28 is provided at the end of the horizontal connecting rod 27, and a second docking portion 28 is provided at the end of the second connecting rod. The two second docking portions 28 are docked and installed together, and then the fastener 23 is used to pass through the two second mounting holes 25 to fix the first connecting rod 21 and the second connecting rod 22 around the angle steel 7, so that the first connecting rod 21 and the second connecting rod 22 are fixedly connected to the angle steel 7. The first connecting rod 21, the horizontal connecting rod 27, the first docking portion 26 and the second docking portion 28 are an integrated structure, and the second connecting rod 22, the first docking portion 26 and the second docking portion 28 are an integrated structure.
[0041] See also Figures 1 to 3 As a specific embodiment of the anti-fall device provided by the utility model, the fastener 23 includes a bolt and a nut. During installation, the bolt is passed through the two first mounting holes 24, the connecting hole 13 or through the two second mounting holes 25, and then the nut is used to fix the bolt, so that the first connecting rod 21 and the second connecting rod 22 are fixedly connected to the fixing portion 12 of the guide rail 1, or the first connecting rod 21 and the second connecting rod 22 are fixedly connected to the angle steel 7. When there is an installation spacing between the first connecting rod 21 and the second connecting rod 22, a pad can be set between the installation spacing of the first connecting rod 21 and the second connecting rod 22, and the pad is provided with a through hole coaxially aligned with the connecting hole 13.
[0042] See also Figures 1 to 3 As a specific implementation of the anti-fall device provided by the utility model, a plurality of spare holes 14 are provided on one side of the plurality of connecting holes 13. By providing the spare holes 14, a plurality of fixing components 2 can be installed to improve the fixing installation effect of the guide rail 1 and the angle steel 7; when the connecting hole 13 fails, the spare hole 14 can also be used to replace the connecting hole 13.
[0043] See also Figures 1 to 3 As a specific embodiment of the anti-fall device provided by the utility model, multiple connection holes 13 are evenly arranged along the length direction of the guide rail 1; therefore, with the help of multiple fixing components 2, the connection force between the guide rail 1 and the angle steel 7 is more evenly distributed, thereby improving the connection stability between the guide rail 1 and the angle steel 7.
[0044] See also Figures 1 to 7 As a specific embodiment of the anti-fall device provided by the utility model, the self-locking device 3 also includes a mounting frame 31 and a guide wheel 36 group. The lower end of the mounting frame 31 has a mounting groove 32 that is mounted in cooperation with the guide rail 1, and the mounting groove 32 runs through the mounting frame 31; the upper end surface of the mounting frame 31 is provided with a long groove 33 connected to the mounting groove 32; the number of the guide wheel 36 group is two, which are rotatably connected to the opposite side walls of the mounting groove 32, and the axial direction of the guide wheel 36 is perpendicular to the length direction of the guide rail 1; the guide wheel 36 group and the mounting groove An accommodation spacing 37 for accommodating the sliding portion 11 of the guide rail 1 is provided between the top surfaces of the guide rails 32, and the guide wheel 36 contacts the lower end surface of the sliding portion 11; the cam structure 4 is installed in the installation groove 32 and is rotatably connected to the mounting frame 31; the axial direction of the cam structure 4 is perpendicular to the length direction of the guide rail 1 and is located above the sliding portion 11; the cam structure 4 is provided with a friction surface 41 in contact with the upper end surface of the sliding portion 11; the rotating arm 44 is inserted into the long groove 33, and one end is fixedly connected to the cam structure 4, and the other end is located outside the mounting frame 31; The other end of the rotating arm 44 is used to connect with the safety rope. When in use, the mounting frame 31 is mounted on the guide rail 1, and the sliding portion 11 on the guide rail 1 is located in the accommodation spacing 37 in the mounting groove 32, wherein the guide wheel 36 is located below the sliding portion 11 and contacts the lower end surface of the sliding portion 11, and the cam structure 4 arranged in the mounting groove 32 is located above the sliding portion 11, and the rotating arm 44 passes through the long groove 33 and is located outside the mounting frame 31; in the event of an accidental fall, the safety rope pulls the rotating arm 44 to rotate downward. , and the rotating arm 44 drives the cam structure 4 to rotate in the mounting groove 32, and the friction surface 41 on the cam structure 4 contacts the upper end surface of the sliding part 11, thereby forming a large friction force, which reduces the downward movement speed of the mounting frame 31, thereby achieving the purpose of protecting the staff; in this way, the sliding part 11 of the guide rail 1 is clamped between the cam structure 4 and the guide wheel 36, and the sliding part 11 is located inside the mounting frame 31, so that a double limit is formed between the self-locking device 3 and the guide rail 1, effectively preventing the self-locking device 3 from detaching from the guide rail 1.
[0045] See also Figures 4 to 7As a specific embodiment of the anti-fall device provided by the utility model, the self-locking device 3 also includes two support wheels 5 groups respectively rotatably connected to the opposite side walls of the mounting groove 32, the support wheel 5 is located above the guide wheel 36, and the axial direction is parallel to the axial direction of the guide wheel 36; the support wheel 5 and the guide wheel 36 are arranged at an accommodation spacing 37 for accommodating the sliding portion 11, and the support wheel 5 is in contact with both sides of the upper end surface of the sliding portion 11; grooves 34 are provided on the two side walls of the mounting groove 32, the grooves 34 are located between the guide wheel 36 and the support wheel 5, and the guide wheel 35 rotatably connected in the grooves 34, and the axial direction of the guide wheel 35 is parallel to the axial direction of the guide wheel 3 6 axis direction and the length direction of the guide rail 1 are perpendicular; the outer side surface of the guide wheel 35 contacts the side surface of the sliding part 11; the two support wheel 5 groups correspond to the two guide wheel 36 groups one by one, and are arranged at intervals up and down; a receiving spacing 37 is formed between the support wheel 5 group and the guide wheel 36 group, so that when in use, the sliding part 11 is located between the multiple guide wheels 36 and the multiple support wheels 5, the guide wheels 36 contact the lower end surface of the sliding part 11, and the support wheels 5 contact the upper end surface of the sliding part 11, so that the self-locking device 3 moves on the guide rail 1 more smoothly, and under the clamping action of the support wheels 5 and the guide wheels 36, the self-locking device 3 is less likely to disengage. Each support wheel 5 group includes three support wheels 5, and each guide wheel 36 group includes three guide wheels 36. At the same time, grooves 34 are provided on both side walls of the mounting groove 32, and the grooves 34 correspond to the side surfaces of the sliding portion 11; guide wheels 35 are rotatably connected in the grooves 34, and the guide wheels 35 on both sides of the mounting groove 32 are respectively in contact with both sides of the sliding portion 11; when the self-locking device 3 slides on the guide rail 1, the guide wheels 35 on both sides of the mounting groove 32 form a limit between the self-locking device 3 and the guide rail 1 to ensure that the self-locking device 3 moves accurately without getting stuck.
[0046] See also Figures 4 to 7As a specific embodiment of the anti-falling device provided by the utility model, a rotating shaft 42 is provided on the cam structure 4 and is rotatably connected to the mounting frame 31. The self-locking device 3 also includes a locking mechanism 6 fixedly installed on one side of the mounting frame 31. One end of the rotating shaft 42 passes through the mounting frame 31 and is connected to the locking mechanism 6. The locking mechanism 6 is used to limit and lock the rotating shaft 42 and open the rotation; the locking mechanism 6 includes a mounting box 61, a limit block 62 slidably connected to the mounting box 61, and a push-pull rod 63 connected to the limit block 62; the mounting box 61 is provided with a connecting port on one side close to the mounting frame 31, and a sliding hole 65 is provided on one end surface. One end of the rotating shaft 42 passes through the connecting port and is located in the mounting box 61. A limiting groove 43 is provided at one end of the rotating shaft 42, and a limiting protrusion 64 which is installed in cooperation with the limiting groove 43 is provided on the limiting block 62, and the limiting protrusion 64 is slidably connected with the limiting groove 43; the push-pull rod 63 is slidably connected with the sliding hole 65; a through hole is provided on the cam structure 4, the rotating shaft 42 is installed in the through hole and is fixedly connected with the cam structure 4; the two ends of the rotating shaft 42 are rotatably connected with the mounting frame 31, and one end of the rotating shaft 42 is passed outside the mounting frame 31; at the same time, a locking mechanism 6 is arranged on the mounting frame 31, and one end of the rotating shaft 42 is connected to the locking mechanism 6, and the rotating shaft 42 is limited or released by the locking mechanism 6, so that the staff can operate according to the working conditions. The mounting box 61 is fixedly mounted on one side of the mounting frame 31, and the connection port on the mounting box 61 corresponds to the through hole on the mounting frame 31, so that the rotating arm 44 passes through the through hole and the connection port and enters the mounting box 61; a limiting groove 43 is provided at one end of the rotating arm 44 located inside the mounting box 61, and a limiting block 62 is located on one side of the rotating arm 44 and corresponds to the limiting groove 43; the push-pull rod 63 is slidably penetrated in the sliding hole 65 and one end is connected to the limiting block 62. When in use, the push-pull rod 63 is manipulated to move along the sliding hole 65, and then the limiting block 62 is manipulated to move toward the rotating shaft 42, so that the limiting protrusion 64 on the limiting block 62 is stuck in the limiting groove 43, so that the rotating arm 44 cannot rotate. When it is necessary to release the limit of the rotating arm 44, the push-pull rod 63 is manipulated to move in the opposite direction so that the limiting protrusion 64 on the limiting block 62 is separated from the limiting groove 43, and the rotating arm 44 is no longer limited, so it can rotate smoothly. The limiting groove 43 is a plane groove formed on the outer side of the rotating arm 44 , and the limiting protrusion 64 is a boss extending downward from the lower end surface of the limiting block 62 , and the boss is installed in cooperation with the plane groove.
[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A fall prevention device, characterized in that: include: A guide rail is used to be installed on a transmission line tower and extends along the angle steel on the transmission line tower; the guide rail has a sliding portion and a fixing portion arranged along the length direction, and the fixing portion is provided with a plurality of connection holes arranged along the length direction; A plurality of fixing components, corresponding one to one with the plurality of connecting holes; the fixing components include a first connecting rod, a second connecting rod and two fasteners, the first connecting rod and the second connecting rod are respectively arranged along two right-angled surfaces of the angle steel, and the upper ends are located on one side of the guide rail, the upper ends of the first connecting rod and the second connecting rod are both provided with a first mounting hole corresponding to the connecting hole; the lower ends of the first connecting rod are arranged around the angle steel and extend toward the second connecting rod, and the lower ends of the first connecting rod and the second connecting rod are both provided with a second mounting hole; the two fasteners are respectively fixedly installed on the upper and lower ends of the first connecting rod and the second connecting rod, and are used to fix the first connecting rod, the second connecting rod and the guide rail on the angle steel; A self-locking device is slidably connected to the guide rail; the self-locking device is provided with a rotatably connected cam structure and a rotating arm fixedly connected to the cam structure; the rotating arm drives the cam structure to rotate so that the cam structure is squeezed on the guide rail to form friction resistance.
2. The anti-fall device according to claim 1, characterized in that: The upper ends of the first connecting rod and the second connecting rod are each provided with a first docking portion which is arranged vertically, and the first docking portion is arranged parallel to the fixing portion; and the first mounting hole is opened on the first docking portion.
3. The anti-fall device according to claim 2, characterized in that: The two first docking portions are located on the same side of the fixing portion.
4. The anti-fall device according to claim 2, characterized in that: The lower end of the first connecting rod is horizontally bent to form a horizontal connecting rod, and the horizontal connecting rod is located below the angle steel and surrounds the angle steel; a second docking portion is provided at one end of the horizontal connecting rod away from the first connecting rod and at the lower end of the second connecting rod; the second mounting hole is opened on the second docking portion.
5. The anti-fall device according to claim 1, characterized in that: The fasteners include bolts and nuts.
6. The anti-fall device according to claim 1, characterized in that: A plurality of spare holes are arranged on one side of the plurality of connecting holes.
7. The fall prevention device according to claim 1, characterized in that: The plurality of connection holes are evenly spaced and arranged along the length direction of the guide rail.
8. The anti-fall device according to claim 1, characterized in that: The self-locking device also includes: The mounting frame has a mounting groove at the lower end thereof for mounting in cooperation with the guide rail, and the mounting groove penetrates the mounting frame; the upper end surface of the mounting frame is provided with a long groove connected to the mounting groove; There are two guide wheel groups, which are rotatably connected to the two opposite side walls of the mounting groove, and the axial direction of the guide wheel is perpendicular to the length direction of the guide rail; an accommodation spacing for accommodating the sliding part of the guide rail is provided between the guide wheel group and the top surface of the mounting groove, and the guide wheel is in contact with the lower end surface of the sliding part; The cam structure is installed in the mounting groove and is rotatably connected to the mounting frame; the axial direction of the cam structure is perpendicular to the length direction of the guide rail and is located above the sliding part; the cam structure is provided with a friction surface that contacts the upper end surface of the sliding part; the rotating arm is passed through the long groove, and one end is fixedly connected to the cam structure, and the other end is located outside the mounting frame; the other end of the rotating arm is used to be connected to a safety rope.
9. The anti-fall device according to claim 8, characterized in that: The self-locking device also includes two support wheel groups that are rotatably connected to the two side walls opposite to the mounting groove, the support wheel is located above the guide wheel, and the axial direction is parallel to the axial direction of the guide wheel; the support wheel and the guide wheel are arranged to accommodate the accommodating spacing of the sliding part, and the support wheel is in contact with both sides of the upper end surface of the sliding part; grooves are provided on the two side walls of the mounting groove, and the grooves are located between the guide wheel and the support wheel. The guide wheel is rotatably connected in the grooves, and the axial direction of the guide wheel is perpendicular to the axial direction of the guide wheel and the length direction of the guide rail; the outer side surface of the guide wheel is in contact with the side surface of the sliding part.
10. The fall prevention device according to claim 8, characterized in that: The cam structure is provided with a rotating shaft rotatably connected to the mounting frame, and the self-locking device also includes a locking mechanism fixedly mounted on one side of the mounting frame, one end of the rotating shaft passes through the mounting frame and is connected to the locking mechanism, and the locking mechanism is used to limit and lock the rotating shaft and open the rotation; the locking mechanism includes a mounting box, a limit block slidably connected to the mounting box, and a push-pull rod connected to the limit block; a connecting port is provided on one side of the mounting box close to the mounting frame, and a sliding hole is provided on one end surface, one end of the rotating shaft passes through the connecting port and is located in the mounting box, a limit groove is provided at one end of the rotating shaft, a limit protrusion is provided on the limit block to cooperate with the limit groove, and the limit protrusion is slidably connected to the limit groove; the push-pull rod is slidably connected to the sliding hole.