A fixed steel strand anti-falling device

Abstract

This utility model provides a fixed steel strand fall arrest device, including a fall arrest body, a first rocker arm, a second rocker arm, an operating lever, a first lock, and a second lock. The first and second rocker arms are rotatably mounted at both ends of the fall arrest body, with a first elongated slot and a second elongated slot at their near ends, respectively. The operating lever passes through these two elongated slots and has operating pull rings at both ends. The far ends of the first and second rocker arms are respectively provided with a first abutment and a second abutment. The fall arrest body has a first lock and a second lock corresponding to each end. Under normal conditions, the abutment and lock are separated, and the device can slide along the high-voltage line. When a worker falls, the safety rope pulls down the operating lever, driving the first and second rocker arms to rotate, causing the two abutment arms to move upwards and engage with the corresponding locks, clamping the high-voltage line from below. Friction braking is generated under the action of the anti-slip structure, achieving automatic and rapid braking and ensuring safety during high-altitude operations.

Description

Technical Field

[0001] This utility model relates to the field of power engineering technology, and in particular to a fixed steel strand anti-fall device. Background Technology

[0002] Power transmission towers, also known as electric towers or power line towers, are an indispensable component of power transmission systems. They effectively suspend and protect power lines while providing stable support. The structure of a power transmission tower encompasses several key parts, including the roof frame, lightning protection wires, conductors, tower body, and tower legs.

[0003] During high-voltage power transmission, adjacent power towers are connected by power lines, which are equipped with insulators, spacers, and other structures. When maintaining or repairing power equipment, power workers typically walk on high-voltage power lines tens or even hundreds of meters above the ground. During this process, they usually use a safety rope connected to one side of their body, passing around the high-voltage power line, and then connecting it to the other side of their body, thus providing protection.

[0004] In the event of a fall, the safety rope becomes caught on the high-voltage power lines. Due to gravity, the high-voltage power lines located between the two power towers are at their lowest point, while those closer to the towers are at a higher point, forming a V-shape. This causes the safety rope to slide along the power lines towards the center during a fall, increasing the rescue distance and time when attempting a rescue from either end of the towers, and potentially causing secondary injuries to power workers. Utility Model Content

[0005] This utility model provides a fixed steel strand fall prevention device, which aims to solve the problem in the prior art that when power workers fall during high-altitude maintenance, they will slide along the high-voltage transmission line, which increases the rescue distance, prolongs the rescue time, and easily causes secondary injuries to the power workers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This utility model embodiment provides a fixed steel strand fall prevention device, including: The fall arrestor body has a first rocker arm and a second rocker arm rotatably mounted at both ends along its length. The first rocker arm has a first elongated slot through it at the end near the second rocker arm, and the second rocker arm has a second elongated slot through it at the end near the first rocker arm. The control lever passes through the first and second elongated slots along the width direction of the fall arrestor body; both ends of the control lever are provided with operating rings. The end of the first rocker arm away from the second rocker arm is provided with a first abutment, and the end of the second rocker arm away from the first rocker arm is provided with a second abutment; One end of the fall arrestor body is provided with a first latch corresponding to the position of the first abutment joint, and the other end of the fall arrestor body is provided with a second latch corresponding to the position of the second abutment joint.

[0007] In one embodiment, both the first and second latches are U-shaped latches, and lock holes are provided at both ends of the fall arrestor body along its length. The two lock holes are arranged along the width direction of the fall arrestor body; The two ends of the U-shaped buckle pass through the lock hole and are connected to the locking nut.

[0008] In one embodiment, a first reset member is provided at one end of the first rocker arm near the first elongated slot; A second reset element is provided at the end of the second rocker arm near the second elongated slot.

[0009] In one embodiment, the first reset member is a first spring, which abuts against the first rocker arm and the fall arrestor body; The second reset element is a second spring, which abuts against the second rocker arm and the fall arrestor body.

[0010] In one embodiment, the fall arrestor body is provided with a first circular groove and a second circular groove corresponding to the first spring and the second spring, respectively.

[0011] In one embodiment, the fall arrestor body is provided with two first support columns and two second support columns along its length; Two first support columns are arranged along the width direction of the fall arrestor body, and the ends of the two first support columns are provided with first support holes. A first rotating shaft is provided in the two first support holes, and the middle part of the first rocker arm is rotatably arranged in the first rotating shaft. Two second support columns are arranged along the width direction of the fall arrestor body, and the ends of the two second support columns are provided with second support holes. A second rotating shaft is provided in the two second support holes, and the middle part of the second rocker arm is rotatably arranged in the second rotating shaft.

[0012] In one embodiment, the U-shaped latch is further provided with a limiting protrusion.

[0013] In one embodiment, both the first abutment and the second abutment are provided with a plurality of anti-slip strips.

[0014] The advantages of this invention compared to existing technologies are as follows: This application uses a first and second locking buckle to pass through the high-voltage transmission line, and then uses the first and second locking buckles to install the fall arrestor onto the high-voltage transmission line. Two protective ropes are then used, each with a quick-release buckle at both ends. One end of each rope is connected to an operating ring via a quick-release buckle. The other ends of the ropes are connected to the sides of the power worker's waist via padlocks. When the power worker is walking normally on the high-voltage transmission line, the first and second locking buckles can slide normally along the transmission line without affecting the worker's movement. In the event of a fall, the power worker pulls the operating lever using a safety rope, causing it to move downwards. Simultaneously, the operating lever pulls the first and second rockers downwards. At this point, the first and second abutment joints at the other ends of the first and second rockers move upwards. The first abutment joint engages with the first locking buckle, abutting against the lower part of the high-voltage power line. The second rocker arm engages with the second locking buckle, with the second abutment joint also abutting against the lower part of the high-voltage power line, thus clamping the power line and preventing the fall arrestor from sliding along the inclined high-voltage power line. This prevents the power worker from sliding towards the lower point in the middle of the power line, reducing rescue time and effectively preventing secondary injuries to the power worker.

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and understandable, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a fixed steel strand anti-fall device provided for an embodiment of this utility model; Figure 2 An exploded view of a fixed steel strand fall arrestor provided in an embodiment of this utility model; Figure 3 A three-dimensional structural view of a fixed steel strand anti-fall device provided in an embodiment of this utility model; Figure 4 This is an exploded view from another angle of a fixed steel strand anti-fall device provided in an embodiment of this utility model.

[0017] Figure label: 1. First rocker arm; 11. First long slot; 12. First abutment joint; 13. Anti-slip strip; 2. Second rocker arm; 21. Second long slot; 22. Second abutment joint; 3. Fall arrestor body, 31. First circular groove, 32. Second circular groove, 33. Locking hole, 34. First support column, 341. First support hole, 342. First pivot, 35. Second support column, 351. Second support hole, 352. Second pivot; 4. Operate the lever; 41. Operate the pull ring; 5. First latch; 51. Limiting protrusion; 6. Second latch; 7. Lock the nut; 8. First reset component; 9. Second reset component. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0020] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0022] Please see Figure 1-4 This utility model provides a fixed steel strand anti-fall device, comprising: The fall arrestor body 3 has a first rocker arm 1 and a second rocker arm 2 rotatably mounted at both ends along its length. The first rocker arm 1 has a first elongated slot 11 through it at the end near the second rocker arm 2, and the second rocker arm 2 has a second elongated slot 21 through it at the end near the first rocker arm 1. The operating lever 4 passes through the first elongated slot 11 and the second elongated slot 21 along the width direction of the fall arrestor body 3; both ends of the operating lever 4 are provided with operating pull rings 41. The end of the first rocker arm 1 away from the second rocker arm 2 is provided with a first abutment 12, and the end of the second rocker arm 2 away from the first rocker arm 1 is provided with a second abutment 22; One end of the fall arrestor body 3 is provided with a first latch 5 corresponding to the position of the first abutment 12, and the other end of the fall arrestor body 3 is provided with a second latch 6 corresponding to the position of the second abutment 22.

[0023] In use, this application first passes through the high-voltage transmission line via the first locking buckle 5 and the second locking buckle 6, and then installs the fall arrestor body 3 onto the high-voltage transmission line using the first locking buckle 5 and the second locking buckle 6. Next, two protective ropes are used, each with a quick-release buckle at both ends. One end of each rope is connected to an operating ring 41 via a quick-release buckle. The other ends of the ropes are connected to the sides of the power worker's waist via padlocks. When the power worker is walking normally on the high-voltage transmission line, the first locking buckle 5 and the second locking buckle 6 can slide normally along the high-voltage transmission line without affecting the power worker's movement. In the event of a fall, the power worker pulls the operating lever 4 using a safety rope, causing it to move downwards. Simultaneously, the operating lever 4 pulls the first rocker arm 1 and the second rocker arm 2 downwards. At this time, the first abutment joint 12 and the second abutment joint 22 at the other ends of the first rocker arm 1 and the second rocker arm 2 move upwards. The first abutment joint 12 engages with the first locking buckle 5, abutting against the lower part of the high-voltage transmission line. Meanwhile, the second rocker arm 2 engages with the second locking buckle 6, with the second abutment joint 22 also abutting against the lower part of the high-voltage transmission line, thus clamping the high-voltage transmission line. This prevents the fall arrestor 3 from sliding along the inclined high-voltage transmission line, and further prevents the power worker from sliding towards the lower point in the middle of the high-voltage transmission line, reducing rescue time and effectively preventing secondary injuries to the power worker.

[0024] In a further embodiment, both the first latch 5 and the second latch 6 are U-shaped latches, and both ends of the anti-fall body 3 in the length direction are provided with lock holes 33; The two lock holes 33 are arranged along the width direction of the fall arrestor body 3; The two ends of the U-shaped buckle pass through the lock hole 33 and are connected to the locking nut 7.

[0025] In this application, the first latch 5 and the second latch 6 are configured as U-shaped latches, which facilitates installation.

[0026] In addition, the U-shaped latch described in this application is provided with limit protrusions 51 at both ends.

[0027] The limiting protrusion 51 can limit the fall arrestor body 3, preventing the gap between the first lock 5 and the second lock 6 and the fall arrestor body 3 from being too small when the U-shaped lock is installed.

[0028] In a further embodiment, a first reset member 8 is provided at one end of the first rocker arm 1 near the first elongated slot 11; The second rocker arm 2 is provided with a second reset member 9 at the end near the second elongated slot 21.

[0029] When no fall occurs, the first reset member 8 and the second reset member 9, under the push of the first reset member 8 and the second reset member 9, can keep the first abutment 12 and the second abutment 22 in a separated posture from the first latch 5 and the second latch 6, thereby reducing the frictional force of the fall arrestor 3 sliding along the high-voltage steel wire rope after it is installed, and reducing the burden on power workers moving along the high-voltage transmission line.

[0030] In this application, the first reset member 8 is a first spring, and the first spring abuts between the first rocker 1 and the anti-fall body 3; The second reset element 9 is a second spring, which abuts against the second rocker arm 2 and the fall arrestor body 3.

[0031] In this embodiment, the fall arrestor body 3 is provided with a first circular groove 31 and a second circular groove 32 corresponding to the first spring and the second spring, respectively.

[0032] The first circular groove 31 and the second circular groove 32 can position the first spring and the second spring to prevent them from deviating.

[0033] In a further embodiment, the fall arrestor body 3 is provided with two first support columns 34 and two second support columns 35 along its length direction; Two first support columns 34 are arranged along the width direction of the fall arrestor body 3. The ends of the two first support columns 34 are provided with first support holes 341. A first rotating shaft 342 is provided in the two first support holes 341. The middle part of the first rocker arm 1 is rotatably arranged in the first rotating shaft 342. Two second support columns 35 are arranged along the width direction of the fall arrestor body 3. The ends of the two second support columns 35 are provided with second support holes 351. A second rotating shaft 352 is provided in the two second support holes 351. The middle part of the second rocker 2 is rotatably arranged in the second rotating shaft 352.

[0034] In this embodiment, the first support column 34 and the second support column 35 are used to support the first rocker arm 1 and the second rocker arm 2, so that the first rocker arm 1 and the second rocker arm 2 can rotate freely.

[0035] In a further embodiment, both the first abutment joint 12 and the second abutment joint 22 are provided with a plurality of anti-slip strips 13.

[0036] In the event of a fall, the anti-slip strip 13 can increase the friction between the first abutment 12 and the second abutment 22 and the high-voltage transmission line, effectively preventing the fall arrestor 3 from sliding along the high-voltage transmission line.

[0037] The working principle of this application is as follows: (1) Normal walking state: The device is hung on the high voltage transmission line through the first latch 5 and the second latch 6.

[0038] Under the action of the reset components (first spring and second spring), the first abutment 12 and the second abutment 22 of the first rocker arm 1 and the second rocker arm 2 remain separated from the latch and do not come into contact with the high-voltage line.

[0039] At this time, the device can slide along the high-voltage line without affecting the normal movement of workers on the cable.

[0040] (2) Fall protection braking trigger state: When a worker falls, his waist safety rope pulls down the control lever 4.

[0041] The lever 4 drives the first rocker 1 and the second rocker 2 to rotate around the first rotating shaft 342 and the second rotating shaft 352 respectively through the first long slot 11 and the second long slot 21 on the first rocker 1 and the second rocker 2.

[0042] After the first rocker arm 1 and the second rocker arm 2 rotate, the first abutment 12 and the second abutment 22 at their other ends move upward and cooperate with the corresponding first latch 5 and the second latch 6 to press against the high-voltage transmission line from below.

[0043] Under the action of the anti-slip strips 13 of the first abutment joint 12 and the second abutment joint 22, a huge frictional force is generated between the first abutment joint 12 and the second abutment joint 22 and the high-voltage line, which quickly brakes and prevents the fall arrestor body 3 from sliding along the inclined cable, preventing the worker from sliding down to a lower place and buying time for rescue.

[0044] Compared with the prior art, this application has the following advantages: (1) Automatic and rapid braking: When falling, the worker's own weight automatically triggers the brake through the safety rope. The response is rapid and no manual operation is required, ensuring timely braking.

[0045] (2) Reliable braking and good anti-slip effect: It adopts a double rocker linkage symmetrical clamping structure, which simultaneously abuts the high voltage line from both sides, and the force is balanced. The abutment joint is equipped with anti-slip strips 13, which significantly increases the friction and effectively prevents slippage.

[0046] (3) The reset mechanism is effective: the first reset component 8 and the second reset component 9 can automatically restore the device to the non-braking state, and are provided with positioning grooves to prevent the first spring and the second spring from deviating, and the operation is reliable.

[0047] (4) It can effectively prevent secondary slippage injuries after workers fall, create conditions for rescue, and improve the safety factor of high-altitude operations.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A fixed steel strand fall arrestor, characterized in that, include: The fall arrestor body has a first rocker arm and a second rocker arm rotatably mounted at both ends along its length. The first rocker arm has a first elongated slot through it at the end near the second rocker arm, and the second rocker arm has a second elongated slot through it at the end near the first rocker arm. The control lever passes through the first and second elongated slots along the width direction of the fall arrestor body; both ends of the control lever are provided with operating rings. The end of the first rocker arm away from the second rocker arm is provided with a first abutment, and the end of the second rocker arm away from the first rocker arm is provided with a second abutment; One end of the fall arrestor body is provided with a first latch corresponding to the position of the first abutment joint, and the other end of the fall arrestor body is provided with a second latch corresponding to the position of the second abutment joint.

2. The fixed steel strand fall arrestor according to claim 1, characterized in that, Both the first and second latches are U-shaped latches, and lock holes are provided at both ends of the fall arrestor body along its length. The two lock holes are arranged along the width direction of the fall arrestor body; The two ends of the U-shaped buckle pass through the lock hole and are connected to the locking nut.

3. The fixed steel strand fall arrestor according to claim 2, characterized in that, A first reset element is provided at one end of the first rocker arm near the first elongated slot. A second reset element is provided at the end of the second rocker arm near the second elongated slot.

4. The fixed steel strand fall arrestor according to claim 3, characterized in that, The first reset element is a first spring, which abuts against the first rocker arm and the fall arrestor body; The second reset element is a second spring, which abuts against the second rocker arm and the fall arrestor body.

5. The fixed steel strand fall arrestor according to claim 4, characterized in that, The fall arrestor body is provided with a first circular groove and a second circular groove corresponding to the first spring and the second spring, respectively.

6. The fixed steel strand fall arrestor according to any one of claims 1 to 5, characterized in that, The fall arrestor body is provided with two first support columns and two second support columns along its length; Two first support columns are arranged along the width direction of the fall arrestor body, and the ends of the two first support columns are provided with first support holes. A first rotating shaft is provided in the two first support holes, and the middle part of the first rocker arm is rotatably arranged in the first rotating shaft. Two second support columns are arranged along the width direction of the fall arrestor body, and the ends of the two second support columns are provided with second support holes. A second rotating shaft is provided in the two second support holes, and the middle part of the second rocker arm is rotatably arranged in the second rotating shaft.

7. The fixed steel strand fall arrestor according to claim 2, characterized in that, The U-shaped latch is also provided with a limiting protrusion.

8. The fixed steel strand fall arrestor according to claim 1, characterized in that, Both the first and second abutment joints are provided with several anti-slip strips.

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