Anti-falling device for climbing power transmission tower

Abstract

The embodiment of the present application discloses a kind of for power transmission tower climbing anti-falling device, it includes anti-falling device, the anti-falling device includes anti-falling trolley, anti-falling rope and anti-falling collar, anti-falling trolley is used to movably installed in the matching groove of power transmission tower, one end of anti-falling rope is connected with anti-falling trolley, the other end of anti-falling rope is connected with anti-falling collar, and anti-falling collar is used to set on the body of electric power maintenance personnel;And anti-falling foot pedal, anti-falling foot pedal includes anti-falling cuff and pedal assembly, anti-falling cuff is used to set on the outside of the main rod of power transmission tower and can be moved relative to power transmission tower, anti-falling cuff is connected with pedal assembly, and pedal assembly is used to install to the foot of electric power maintenance personnel.One aspect, anti-falling device and anti-falling foot pedal form two protective measures, effectively improve the protection performance of anti-falling device, on the other hand, even if there is water, snow even icing on the stepping of power transmission tower, resulting in the risk of foot from stepping slipping when climbing due to insufficient friction.

Description

Technical Field

[0001] This invention relates to the technical field of power protection equipment, and more particularly to a fall arrest device for climbing power transmission towers. Background Technology

[0002] Transmission towers are a common type of power transmission facility in the power industry. They are typically built in open outdoor areas to support transmission cables, enabling the transmission of electrical energy. Numerous various electrical appliances are installed on both the transmission cables and towers to ensure their safe and reliable operation. However, outdoor weather is complex and unpredictable, and the harsh environment, coupled with prolonged high and low temperature variations and erosion from rain and snow, can easily damage electrical appliances. Therefore, replacing and repairing damaged electrical appliances is an important and frequent part of the daily work of power maintenance personnel.

[0003] When carrying out maintenance and repair work, power maintenance personnel need to climb to high positions on transmission towers. Since the installation positions of electrical equipment are usually very high (generally tens of meters above the ground), power maintenance personnel are prone to physical exhaustion after climbing for a long time, which makes it difficult to concentrate effectively. In addition, when there is rain or snow on the transmission tower, or even ice on the handrails or footholds, it is very easy to lose grip and slip. Although power maintenance personnel are currently equipped with simple fall protection devices, these devices have poor reliability and still pose a risk of falling from heights and threatening the lives of power maintenance personnel. Summary of the Invention

[0004] In view of this, the present invention provides a fall protection device for climbing power transmission towers, which solves the problems of poor protection performance and potential fall hazards in the prior art.

[0005] This invention proposes a fall protection device for climbing power transmission towers, comprising:

[0006] A fall arrestor, comprising a fall arrestor trolley, a fall arrestor rope, and a fall arrestor sling, wherein the fall arrestor trolley is movably mounted within a mating groove on a transmission tower; one end of the fall arrestor rope is connected to the fall arrestor trolley, and the other end of the fall arrestor rope is connected to the fall arrestor sling, which is used to secure the fall arrestor to the body of power maintenance personnel; and

[0007] The fall protection foot pedal includes a fall protection sleeve and a pedal assembly. The fall protection sleeve is used to be fitted on the outside of the main pole of the transmission tower and can move relative to the transmission tower. The fall protection sleeve is connected to the pedal assembly, which is used to be installed on the feet of power maintenance personnel.

[0008] In one embodiment, the pedal assembly includes a pedal body, a first anti-disengagement strap and a second anti-disengagement strap, wherein the first anti-disengagement strap is disposed at the front of the pedal body and the second anti-disengagement strap is disposed at the rear of the pedal body;

[0009] The fall arrestor includes a sleeve body, which is located at the front end of the footplate body and is used to movably connect with the main pole of the power transmission tower.

[0010] In one embodiment, the sleeve body includes a first open end and a second open end. The first open end is provided with a first latch, and the second open end is provided with a second latch. In the initial state, the first latch and the second latch are separated, and the first open end and the second open end are in an open state. In the installation state, the first latch and the second latch are locked together, and the first open end and the second open end are in a closed state.

[0011] In one embodiment, the fall arrestor also includes an inflatable pedal, which is disposed on the pedal body. The clamp body is configured as an airbag structure. The clamp body includes an annular airbag body and a plurality of airbag sub-bodies distributed circumferentially on the inner annular wall of the airbag body. The airbag sub-bodies communicate with the inflatable pedal through the airbag cavity of the airbag body.

[0012] In the non-inflated state, the bladder assembly is in a contracted state; in the inflated state, the bladder assembly is in an expanded state.

[0013] In one embodiment, the fall arrestor sleeve further includes multiple sets of moving units, which are distributed circumferentially on the inner annular wall of the bladder body. Each moving unit includes an insert and a roller. The insert is fitted onto the bladder body, and the roller is rotatably mounted on the insert via an axle.

[0014] When the bladder assembly is in a contracted state, its height is less than the height of the roller; when the bladder assembly is in an inflated state, its height is greater than the height of the roller.

[0015] In one embodiment, the fall arrestor vehicle includes a vehicle body, a movable wheel, and a wedging mechanism. The movable wheel is rotatably mounted on the vehicle body and is used to roll into contact with the groove wall of the mating groove. The wedging mechanism is connected to the end of the fall arrestor rope away from the fall arrestor collar.

[0016] In a non-stressed state, the wedge clamping mechanism is in a retracted state and is not in contact with the groove wall of the mating groove; in a tensile state, the wedge clamping mechanism switches from the retracted state to the extended state and wedges tightly with the groove wall of the mating groove.

[0017] In one embodiment, the wedging mechanism includes an actuating rod, a first actuating wheel, a second actuating wheel, a first wedging assembly, and a second wedging assembly. The actuating rod is movably mounted on the vehicle body and connected to the fall arresting rope. One end of the actuating rod away from the fall arresting rope is connected to the vehicle body via an elastic element. Both the first and second actuating wheels are rotatably mounted on the vehicle body and are driven by the actuating rod. The first actuating wheel has a first actuating protrusion that abuts against the first wedging assembly. The first wedging assembly is movably mounted on the vehicle body and can extend or retract from the vehicle body. The second actuating wheel has a second actuating protrusion that abuts against the second wedging assembly. The second wedging assembly is movably mounted on the vehicle body and can extend or retract from the vehicle body. In the extended position, the first and second wedging assemblies can be wedged and limited against the groove wall of the mating groove.

[0018] In one embodiment, the actuating rod has a first tooth and a second tooth that are spaced apart and opposite to each other. The first actuating wheel is also provided with a first mating tooth, and the second actuating wheel is also provided with a second mating tooth. The first mating tooth meshes with the first tooth and the second mating tooth meshes with the second tooth.

[0019] In one embodiment, both the first wedge clamping assembly and the second wedge clamping assembly include a carrier rod and a plurality of wedge clamping blocks, wherein the plurality of wedge clamping blocks are spaced apart on the carrier rod along the length direction of the carrier rod.

[0020] In one embodiment, the wedge clamping mechanism further includes a guide rail unit that guides and engages with the carrier rod.

[0021] Implementing the embodiments of the present invention will have the following beneficial effects:

[0022] When power maintenance personnel use the fall arrest device for climbing transmission towers according to this solution, they first install the fall arrest vehicle into the mating groove of the transmission tower. Next, they place the fall arrest ring onto the power maintenance personnel's body, ensuring a secure connection. Then, they place the fall arrest clamp onto the outside of the main pole of the transmission tower. Finally, they put the footplate assembly on their feet. Based on this, the power maintenance personnel can begin climbing the transmission tower. On one hand, the fall arrest device and the fall arrest footplate form two layers of protection, effectively improving the protective performance of the fall arrest device. On the other hand, even if there is water, snow, or ice on the footplate of the transmission tower, causing a risk of slipping due to insufficient friction during climbing, the power maintenance personnel's feet are connected to the transmission tower through the footplate assembly and the fall arrest clamp, preventing their feet from completely slipping off. This improves the reliability and safety of climbing by footplate, further eliminating the potential safety hazard of falls from height. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] in:

[0025] Figure 1 This is a schematic diagram of an electrical maintenance worker wearing a fall arrestor for climbing a transmission tower, as described in one embodiment.

[0026] Figure 2 This is a schematic diagram of the anti-fall foot pedal structure in one embodiment where the bladder is in a contracted state.

[0027] Figure 3 This is a schematic diagram of the anti-fall foot pedal in one embodiment, with the bladder component in an inflated state.

[0028] Figure 4 This is a schematic diagram of the structure of the anti-fall accompanying vehicle in one embodiment.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Fall arrestor for climbing power transmission towers; 10. Fall arrestor; 11. Fall arrestor vehicle; 111. Vehicle body; 112. Wedging mechanism; 112a. Actuating rod; 112b. First actuating wheel; 1121b. First actuating protrusion; 112c. Second actuating wheel; 1121c. Second actuating protrusion; 112d. First wedging assembly; 112e. Second wedging assembly; 112f. Elastic element; 12. Fall arrestor rope; 13. Fall arrestor collar; 14. Support pole; 15. Wedging block; 16. Guide rail unit; 20. 21. Fall protection foot pedal; 21. Fall protection hoop; 211. Hoop body; 211a. First open end; 211b. Second open end; 211c. First latch; 211d. Second latch; 211e. Bag body; 2111f. Bag sub-body; 212. Inflatable pedal; 213. Moving unit; 213a. Insert; 213b. Roller; 22. Pedal assembly; 221. Pedal body; 222. First anti-disengagement strap; 223. Second anti-disengagement strap; 200. Transmission tower; 210. Main pole; 211. Mating groove. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] like Figure 1 The diagram illustrates an embodiment of a power maintenance worker wearing a fall arrest device for climbing a transmission tower 200. The fall arrest device (hereinafter referred to as the fall arrest device for climbing the transmission tower 200) includes a fall arrestor 10 and fall arrestor footrests 20. The fall arrestor 10 includes a fall arrestor trolley 11, a fall arrestor rope 12, and a fall arrestor collar 13. The fall arrestor trolley 11 is movably installed within a mating groove 211 on the transmission tower 200. One end of the fall arrest rope 12 is connected to the fall arrest vehicle 11, and the other end of the fall arrest rope 12 is connected to the fall arrest ring 13. The fall arrest ring 13 is used to be put on the body of the power maintenance personnel. The fall arrest foot pedal 20 includes a fall arrest sleeve 21 and a pedal assembly 22. The fall arrest sleeve 21 is used to be put on the outside of the main pole 210 of the transmission tower 200 and can move relative to the transmission tower 200. The fall arrest sleeve 21 is connected to the pedal assembly 22, and the pedal assembly 22 is used to be installed on the feet of the power maintenance personnel.

[0036] Implementing this embodiment of the invention will have the following beneficial effects: When power maintenance personnel use the fall arrest device for climbing transmission tower 200 according to this solution, firstly, the fall arrest vehicle 11 is installed into the mating groove 211 of the transmission tower 200, then the fall arrest collar 13 is put on the power maintenance personnel's body and ensures a good connection; then, the fall arrest sleeve 21 is put on the outside of the main pole 210 of the transmission tower 200, and then the footboard assembly 22 is put on their feet. On this basis, the power maintenance personnel can begin to climb up the transmission tower 200. On the one hand, the fall arrest device 1 The 0 and the anti-fall foot pedal 20 form two protective measures, effectively improving the protective performance of the fall protection device. On the other hand, even if there is water, snow or ice on the foot pedal of the transmission tower 200, which may cause the risk of the foot slipping off the foot pedal due to insufficient friction during climbing, the foot pedal 20 prevents the power maintenance personnel's feet from completely slipping off the foot pedal because the foot pedal assembly 22 and the anti-fall clamp 21 are connected to the transmission tower 200. This improves the reliability and safety of climbing upwards by stepping on the foot pedal and further eliminates the potential safety hazard of falling from a height.

[0037] like Figure 2and Figure 3 As shown, in one embodiment, the pedal assembly 22 includes a pedal body 221, a first anti-disengagement strap 222, and a second anti-disengagement strap 223. The first anti-disengagement strap 222 is located at the front of the pedal body 221, and the second anti-disengagement strap 223 is located at the rear of the pedal body 221. The first anti-disengagement strap 222 is used to secure the instep of the power maintenance personnel's foot, and the second anti-disengagement strap 223 is used to secure the heel of the power maintenance personnel's foot, so as to form a front-to-back securing effect and improve the wearing reliability of the pedal assembly 22.

[0038] The fall arrestor 21 includes a ferrule body 211, which is located at the front end of the footrest body 221 and is used to movably engage with the main pole 210 of the transmission tower 200. The ferrule body 211 engages with the main pole 210, thereby connecting the power maintenance personnel's feet to the main pole 210 as one unit. The main pole 210 restricts the foot's movement, preventing the foot from completely slipping off the transmission tower 200.

[0039] To facilitate the fitting of the clamp body 211 onto the main rod 210 and its removal from the main rod 210, in one embodiment, the clamp body 211 includes a first open end 211a and a second open end 211b. The first open end 211a is provided with a first latch 211c, and the second open end 211b is provided with a second latch 211d. In the initial state, the first latch 211c and the second latch 211d are separated, and the first open end 211a and the second open end 211b are in an open state. In the installation state, the first latch 211c and the second latch 211d are locked together, and the first open end 211a and the second open end 211b are in a closed state. The use of assembleable or detachable first latch 211c and second latch 211d effectively reduces the difficulty and time required for installing or removing the clamp body 211 from the main rod 210, improving the user experience.

[0040] Optionally, the first latch 211c and the second latch 211d can be one of the following: magnetic latch, snap fastener, etc.

[0041] like Figure 2 and Figure 3As shown, it should be noted that the main function of the fall arrestor 21 is only to restrain the movement of the power maintenance personnel's feet, preventing their feet from completely slipping off the stepping stones of the transmission tower 200. However, it should not interfere with the alternating movement of the feet on the stepping stones to achieve the upward climbing action. Therefore, the inner diameter of the fall arrestor 21 should be larger than the cross-sectional dimension of the main pole 210 to avoid frictional resistance between the inner wall of the fall arrestor 21 and the outer wall of the main pole 210, which would affect the movement of the feet. In one embodiment, the fall arrestor 21 also includes an inflatable pedal 212, which is disposed on the pedal body 221. The clamp body 211 is configured as an airbag structure, and the clamp body 211 includes an annular airbag body 211e and a plurality of airbag sub-bodies 2111f distributed along the circumferential direction on the inner annular wall of the airbag body 211e. The airbag sub-bodies 2111f communicate with the inflatable pedal 212 through the airbag cavity of the airbag body 211e.

[0042] In the non-inflated state, the sac accessory 2111f is in a contracted state, and in the inflated state, the sac accessory 2111f is in an expanded state.

[0043] When the foot moves upward along the transmission tower 200 and leaves the pedal, the foot is in a free state with respect to the pedal body 221. The foot does not exert pressure on the inflatable pedal 212, so the inflatable pedal 212 does not inflate the bladder body 211e. The bladder sub-body 2111f will remain in a contracted state. At this time, the inner diameter of the bladder body 211e is larger than the cross-sectional size of the main pole 210, so that the clearance between the fall arrestor sleeve 21 and the main pole 210 is appropriately large, ensuring that the fall arrestor sleeve 21 does not generate contact friction resistance with the main pole 210 when it moves upward relative to the main pole 210.

[0044] When a foot steps on the power transmission tower 200, the foot simultaneously presses down on the inflatable pedal 212, which inflates the bladder cavity of the main body 211e. The inflated gas then flows into the bladder sub-body 2111f, increasing the internal pressure and causing it to rapidly deform from a contracted state to an expanded state. At this point, the bladder sub-body 2111f tightly presses against the outer wall of the main pole 210. In other words, multiple bladder sub-body bodies 2111f in different directions simultaneously press against the main pole 210 from multiple directions, thus restricting the movement freedom of the fall arrestor sleeve 21 from multiple directions. This ensures that the fall arrestor sleeve 21 is not easily moved when the foot is on the pedal, thereby restricting the freedom of the pedal assembly 22 and the foot, preventing the pedal assembly 22 and the foot from slipping off the pedal, and improving the stability and reliability of the foot pedal.

[0045] It should be noted that the inflatable pedal 212 adopts an existing mature inflatable pedal structure. When the inflatable pedal 212 is stepped on, it can be inflated. When the inflatable pedal 212 loses its stepping force, it can automatically return to its initial state so that it can be inflated again when stepped on. Its specific structural composition and working principle will not be described in detail here.

[0046] like Figure 2 and Figure 3 As shown, in one embodiment, the fall arrestor 21 further includes multiple sets of moving units 213, which are distributed circumferentially on the inner annular wall of the bladder body 211e. Each moving unit 213 includes an insert 213a and a roller 213b. The insert 213a is fitted into the bladder body 211e, and the roller 213b is rotatably mounted on the insert 213a via an axle.

[0047] When the sac accessory 2111f is in a contracted state, the height of the sac accessory 2111f is less than the height of the roller 213b. When the sac accessory 2111f is in an inflated state, the height of the sac accessory 2111f is greater than the height of the roller 213b.

[0048] As the power maintenance personnel move their feet from one floor to the next, the rollers 213b, installed on the main body 211e via inserts 213a, roll against the side wall of the main body. This allows the fall arrestor 21 to move more smoothly relative to the main pole 210, even when it comes into contact with it. This prevents the main pole 210 from generating excessive frictional resistance against the fall arrestor 21, thus interfering with foot movement. It also helps reduce the force required to lift the feet upward, saving the power maintenance personnel's energy and preventing fatigue.

[0049] When a foot steps onto the upper step, the bladder 2111f inflates and deforms, pressing against the outer wall of the main rod 210 to position the anti-fall sleeve 21. In the inflated state, the height of the bladder 2111f is greater than the height of the roller 213b to ensure that the bladder 2111f can effectively contact the main rod 210.

[0050] In addition, in one embodiment, the fall arrestor vehicle 11 includes a vehicle body 111, a movable wheel and a wedge clamping mechanism 112. The movable wheel is rotatably mounted on the vehicle body 111 and is used to roll into contact with the groove wall of the mating groove 211. The wedge clamping mechanism 112 is connected to the end of the fall arrestor rope 12 away from the fall arrestor collar 13.

[0051] In a non-stressed state, the wedge clamping mechanism 112 is in a retracted state and is not in contact with the groove wall of the mating groove 211; in a tensile state, the wedge clamping mechanism 112 switches from the retracted state to the extended state and wedges tightly with the groove wall of the mating groove 211.

[0052] When power maintenance personnel are climbing the transmission tower 200 normally, their posture is normal, and no additional tension is generated on the fall arrest rope 12. The fall arrest rope 12 is in a slack state, so no tension is generated on the wedging mechanism 112. The wedging mechanism 112 remains in a retracted state inside the vehicle body 111 and does not contact the groove wall of the mating groove 211. At this time, the moving wheel only makes rolling contact with the groove wall of the mating groove 211, ensuring that the fall arrest vehicle 11 can move synchronously upward along the transmission tower 200 with the power maintenance personnel climbing upward.

[0053] However, in the event of an accident, such as when a power maintenance worker's hand slips off the transmission tower 200 or their foot slips off the footrest, causing them to lose their balance or even fall from the transmission tower 200, the fall arrest rope 12 will exert a pulling force on the fall arrest rope 12. The fall arrest rope 12 will then exert a pulling force on the wedging mechanism 112, forcing the wedging mechanism 112 to quickly switch from the retracted state to the extended state. At this time, at least part of the wedging mechanism 112 extends outside the vehicle body 111 and can wed tightly with the groove wall of the mating groove 211. The friction generated by the wedging can suppress the fall arrest vehicle 11 from sliding downward relative to the transmission tower 200, thereby pulling the power maintenance worker to prevent further falls and avoiding a life-threatening safety accident caused by a fall from a height.

[0054] It should be noted that the fall arrestor sleeve 21 is always fitted onto the outside of the main pole 210, which also provides fall arrest and traction for power maintenance personnel. Thus, together with the wedge tightening mechanism 112, it can provide emergency fall arrest and safety for power maintenance personnel.

[0055] like Figure 4As shown, specifically, in one embodiment, the wedging mechanism 112 includes an actuating rod 112a, a first actuating wheel 112b, a second actuating wheel 112c, a first wedging assembly 112d, and a second wedging assembly 112e. The actuating rod 112a is movably mounted on the vehicle body 111 and connected to the fall arresting rope 12. One end of the actuating rod 112a away from the fall arresting rope 12 is connected to the vehicle body 111 via an elastic element 112f. The first actuating wheel 112b and the second actuating wheel 112c are rotatably mounted on the vehicle body 111 and are both in transmission cooperation with the actuating rod 112a. The first actuating wheel 112b is... The first actuating protrusion 1121b abuts against the first wedge clamping assembly 112d. The first wedge clamping assembly 112d is movably disposed on the vehicle body 111 and can extend or retract from the vehicle body 111. The second actuating wheel 112c is provided with a second actuating protrusion 1121c. The second actuating protrusion 1121c abuts against the second wedge clamping assembly 112e. The second wedge clamping assembly 112e is movably disposed on the vehicle body 111 and can extend or retract from the vehicle body 111. In the extended position, the first wedge clamping assembly 112d and the second wedge clamping assembly 112e can be wedge-tightly limited with the groove wall of the mating groove 211.

[0056] In the event of an emergency, power maintenance personnel apply a pulling force to the actuating rod 112a using the fall arrestor rope 12. Simultaneously, the actuating rod 112a is pulled, driving the first actuating wheel 112b and the second actuating wheel 112c to rotate. This causes the first actuating protrusion 1121b and the second actuating protrusion 1121c to simultaneously squeeze and push the first wedge assembly 112d and the second wedge assembly 112e towards the outside of the vehicle body 111, until they extend to the outside of the vehicle body 111. The first wedge assembly 112d and the second wedge assembly 112e wedge the groove wall of the mating groove 211 to generate a frictional wedge force, thus preventing the fall arrestor 10 from sliding downwards relative to the transmission tower 200, thereby achieving the fall protection function for power maintenance personnel.

[0057] Once the power maintenance personnel have performed self-rescue and returned to a normal climbing posture, the tension on the fall arrest rope 12 immediately disappears. Under the pull of the reset elastic force of the elastic element 112f, the actuating rod 112a moves and resets on its own, thereby causing the first wedge assembly 112d and the second wedge assembly 112e to automatically retract into the vehicle body 111.

[0058] Furthermore, the actuating rod 112a has a first tooth and a second tooth that are spaced apart and opposite to each other. The first actuating wheel 112b is also provided with a first mating tooth, and the second actuating wheel 112c is also provided with a second mating tooth. The first mating tooth meshes with the first tooth, and the second mating tooth meshes with the second tooth. By means of the meshing of the first mating tooth with the first tooth and the meshing of the second mating tooth with the second tooth, the actuating rod 112a can achieve a self-locking effect on the first actuating wheel 112b and the second actuating wheel 112c. This prevents the first actuating wheel 112b and the second actuating wheel 112c from slipping and rotating relative to the actuating rod 112a when subjected to the reaction force of the groove wall of the mating groove 211. This would cause the first wedge assembly 112d and the second wedge assembly 112e to retract into the vehicle body 111, resulting in insufficient wedge force and preventing the fall arrestor 10 from stopping on the transmission tower 200, thus causing a safety accident of power maintenance personnel falling from a height.

[0059] Furthermore, in an optional embodiment, both the first wedge assembly 112d and the second wedge assembly 112e include a carrier rod 14 and a plurality of wedge blocks 15, which are spaced apart along the length of the carrier rod 14. By simultaneously wedging the plurality of wedge blocks 15 against the groove wall of the mating groove 211, a greater wedge friction force can be provided to ensure that the fall arrester 10 can reliably stop on the transmission tower 200, providing reliable limiting protection for power maintenance personnel.

[0060] For example, the wedge block 15 is made of a material with a high coefficient of friction, such as rubber or epoxy resin. The wedge block 15 can be assembled and fixed to the carrier rod 14 by one of the following methods: threaded connection, snap-fit ​​connection, or riveting.

[0061] Preferably, the side of the wedge block 15 that contacts the groove wall of the mating groove 211 is also provided with a protective textured structure to improve the wedge clamping friction between the wedge block 15 and the groove wall of the mating groove 211.

[0062] To ensure that the carrier rod 14 extends horizontally from the vehicle body 111 so that all the wedge blocks 15 can simultaneously wedge into the groove wall of the mating groove 211, in one embodiment, the wedge clamping mechanism 112 further includes a guide rail unit 16, which guides and engages with the carrier rod 14. For example, the guide rail unit 16 includes a first guide rail and a second guide rail. The first guide rail is arranged at one end of the carrier rod 14 along its length to provide sliding guidance to that end; the second guide rail is arranged at the other end of the carrier rod 14 along its length to provide sliding guidance to that end.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A fall arrest device for climbing power transmission towers, characterized in that, include: A fall arrestor, comprising a fall arrestor vehicle, a fall arrestor rope, and a fall arrestor collar, wherein the fall arrestor vehicle is movably installed in a mating groove of a transmission tower, one end of the fall arrestor rope is connected to the fall arrestor vehicle, and the other end of the fall arrestor rope is connected to the fall arrestor collar, which is used to be fitted onto the body of power maintenance personnel. as well as The fall protection foot pedal includes a fall protection sleeve and a pedal assembly. The fall protection sleeve is used to be fitted on the outside of the main pole of the transmission tower and can move relative to the transmission tower. The fall protection sleeve is connected to the pedal assembly, and the pedal assembly is used to be installed on the feet of power maintenance personnel. The pedal assembly includes a pedal body; The fall arrestor includes a sleeve body, which is disposed at the front end of the footplate body and is used to movably engage with the main pole of the transmission tower. The fall arrestor also includes an inflatable pedal, which is disposed on the pedal body. The clamp body is configured as an airbag structure. The clamp body includes an annular main body and a plurality of secondary bodies distributed along the circumferential direction on the inner annular wall of the main body. The secondary bodies communicate with the inflatable pedal through the cavity of the main body. In the non-inflated state, the bladder assembly is in a contracted state; in the inflated state, the bladder assembly is in an expanded state.

2. The fall arrest device for climbing transmission towers as described in claim 1, characterized in that, The pedal assembly further includes a first anti-disengagement strap and a second anti-disengagement strap, the first anti-disengagement strap being disposed at the front of the pedal body and the second anti-disengagement strap being disposed at the rear of the pedal body.

3. The fall arrest device for climbing transmission towers as described in claim 2, characterized in that, The clamp body includes a first open end and a second open end. The first open end is provided with a first latch, and the second open end is provided with a second latch. In the initial state, the first latch and the second latch are separated, and the first open end and the second open end are in an open state. In the installation state, the first latch and the second latch are locked together, and the first open end and the second open end are in a closed state.

4. The fall arrest device for climbing transmission towers as described in claim 1, characterized in that, The fall arrestor also includes multiple sets of moving units, which are distributed circumferentially on the inner annular wall of the main body of the apron. Each moving unit includes an insert and a roller. The insert is fitted into the main body of the apron, and the roller is rotatably mounted on the insert via an axle. When the bladder assembly is in a contracted state, its height is less than the height of the roller; when the bladder assembly is in an inflated state, its height is greater than the height of the roller.

5. The fall arrest device for climbing transmission towers as described in claim 1, characterized in that, The fall arrestor vehicle includes a vehicle body, movable wheels, and a wedging mechanism. The movable wheels are rotatably mounted on the vehicle body and are used to roll into contact with the groove wall of the mating groove. The wedging mechanism is connected to the end of the fall arrestor rope away from the fall arrestor collar. In a non-stressed state, the wedge clamping mechanism is in a retracted state and is not in contact with the groove wall of the mating groove; in a tensile state, the wedge clamping mechanism switches from the retracted state to the extended state and wedges tightly with the groove wall of the mating groove.

6. The fall arrest device for climbing transmission towers as described in claim 5, characterized in that, The wedging mechanism includes an actuating rod, a first actuating wheel, a second actuating wheel, a first wedging assembly, and a second wedging assembly. The actuating rod is movably mounted on the vehicle body and connected to the fall arresting rope. The end of the actuating rod away from the fall arresting rope is connected to the vehicle body via an elastic element. Both the first and second actuating wheels are rotatably mounted on the vehicle body and are driven by the actuating rod. The first actuating wheel has a first actuating protrusion that abuts against the first wedging assembly. The first wedging assembly is movably mounted on the vehicle body and can extend or retract from the vehicle body. The second actuating wheel has a second actuating protrusion that abuts against the second wedging assembly. The second wedging assembly is movably mounted on the vehicle body and can extend or retract from the vehicle body. In the extended position, the first and second wedging assemblies can be wedged and limited against the groove wall of the mating groove.

7. The fall arrest device for climbing transmission towers as described in claim 6, characterized in that, The actuating rod has a first tooth and a second tooth that are spaced apart and opposite to each other. The first actuating wheel is also provided with a first mating tooth, and the second actuating wheel is also provided with a second mating tooth. The first mating tooth meshes with the first tooth and the second mating tooth meshes with the second tooth.

8. The fall arrest device for climbing transmission towers as described in claim 6, characterized in that, Both the first wedge clamping assembly and the second wedge clamping assembly include a carrier rod and a plurality of wedge clamping blocks, which are spaced apart on the carrier rod along its length.

9. The fall arrest device for climbing transmission towers as described in claim 8, characterized in that, The wedge clamping mechanism also includes a guide rail unit, which is guided and engaged with the carrier rod.

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