Aerial work anti-falling device

Abstract

The utility model discloses a kind of aerial work anti-falling devices, including hook, the opening of hook is rotatably provided with baffle arm, the lower side of hook is equipped with the fixed ring connected with aerial work personnel safety rope, still be equipped with pull belt and rebound structure on the hook, rebound structure drives baffle arm to close the opening, pull belt can drive the baffle arm rotation and make the opening open;Still including stand, the upper end of stand is equipped with T-hook, and the hook is equipped with the hanging ring matched with T-hook;When using, stand hoists hook to the height needed, then pull belt is pulled to make opening open and hang hook on the pole tower outside, then release pull belt, and rebound structure drives baffle arm to close the opening.The device is hoisted and hung in the pole tower outside by stand, so that the hook connected with safety rope, to avoid the problem that aerial work personnel frequently adjusts hook position in the process of moving up and down multiple times.

Description

Technical Field

[0001] This utility model relates to the technical field of fall prevention for high-altitude operations, and in particular to a fall prevention device for high-altitude operations. Background Technology

[0002] In power transmission systems, overhead transmission lines via towering poles are a crucial component, responsible for efficiently transmitting electricity generated by power plants to users over long distances. However, this process relies heavily on the diligent maintenance and repair work of personnel working at height. When performing high-altitude work, maintenance personnel must climb towering poles and towers to maintain lines and inspect equipment. Their working environment is complex and unpredictable, often accompanied by extreme weather conditions. Combined with the inherent inherent dangers of high-altitude work, workers constantly face severe safety challenges, especially the risk of falls. Currently, traditional high-altitude work safety measures primarily involve securing safety ropes to the poles. During the climb, workers must gradually adjust the anchor points of the safety ropes as they ascend to ensure they remain protected. This means that whenever workers move from one anchor point to a higher one, they must first release the safety anchor from the previous one, climb a certain distance, and then re-anchor the rope. This repeated unfastening and fastening of safety harnesses during ascent is not only time-consuming and laborious but also increases the risk of falls. Utility Model Content

[0003] The purpose of this invention is to provide a fall protection device for high-altitude operations. This device uses a column to support and attach the hook for connecting the safety rope to an external pole, thereby avoiding the problem of high-altitude workers having to frequently adjust the position of the hook during their up-and-down movements.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fall protection device for high-altitude operations includes a hook, a stop arm rotatably mounted at the opening of the hook, and a fixing ring on the lower side of the hook for connection to the safety rope of the high-altitude worker. The hook is characterized by a pull strap and a spring-loaded structure; the spring-loaded structure drives the stop arm to close the opening, and the pull strap can rotate the stop arm to open the opening. It also includes a column with a hook at its upper end and a hanging ring on the hook that cooperates with the hook. In use, the column lifts the hook to the required height, then the pull strap is pulled to open the opening and hang the hook on an external pole or tower. Afterwards, the pull strap is released, and the spring-loaded structure drives the stop arm to close the opening.

[0006] Preferably, the hook is provided with a first arc groove, the stop arm is provided with a first pivot, the first pivot passes through the first arc groove and both ends of the first pivot are fixed on the stop arm, one end of the pull strap is fixed on the first pivot, and the pull strap drives the first pivot to move within the first arc groove.

[0007] Preferably, the spring-loaded structure includes a spring and a second pivot; a second arc groove is also provided on the hook, and the spring is disposed in the second arc groove; the second pivot passes through the second arc groove and both ends of the second pivot are fixed on the stop arm, and the spring keeps the second pivot at the upper end of the second arc groove.

[0008] Preferably, the hook has a shaft hole, and the stop arm is rotatably mounted in the shaft hole via a shaft pin.

[0009] Preferably, the column comprises a plurality of hollow tubes, which are sequentially nested together to form a telescopic column. Adjacent hollow tubes are provided with a snap-fit ​​structure, which includes an elastic snap protrusion provided on the lower side of the inner hollow tube and a snap hole provided on the upper side of the outer hollow tube.

[0010] Preferably, the hanging ring is triangular; the length of the upright is not less than the working height of the worker at height.

[0011] Preferably, the hook is U-shaped with the opening facing upwards, and the open end of the hook extends laterally to both sides to form a connecting rod and a directional rod. A vertical rod is provided at the upper end of the column, and the connecting rod is fixedly connected to the vertical rod and its end extends beyond the vertical rod.

[0012] Preferably, it also includes a reinforcing rod, one end of which is connected to the U-shaped hook and the other end of which is connected to the vertical rod.

[0013] Preferably, a locking hole is provided on the open side of the hook, and a locking hook is provided at the end of the stop arm. When the stop arm closes the opening of the hook, the locking hook is engaged in the locking hole.

[0014] Preferably, it also includes a strap with a hanging hole for attaching to the connecting rod, and a loop for attaching to the column at the other end of the strap. The strap is a rubber strap.

[0015] Compared with existing technologies, the above technical solution has the following advantages:

[0016] This invention utilizes a combination of a hook and a hanging ring on the pole to directly attach the hook to the required working height, avoiding the need to repeatedly fasten and unfasten safety belts during climbing and reducing the risk of falls. Simultaneously, a pull strap is connected to the hook, which controls the opening of the stop arm. The structure is simple and easy to use, ensuring the hook remains closed during operation to prevent detachment. Furthermore, when the hook detaches from the pole, pulling the pull strap opens the stop arm, making operation convenient and quick. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the hook (open state) of this utility model;

[0019] Figure 3 This is an exploded structural diagram of the hook of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the column of this utility model.

[0021] In the diagram, 1 is a hook; 11 is an opening; 12 is a fixing ring; 13 is a hanging ring; 14 is a pivot pin; 15 is a locking hole; 2 is a stop arm; 21 is a locking hook; 3 is a pull strap; 4 is a column; 41 is a hollow tube; 42 is an elastic locking protrusion; 43 is a locking hole; 44 is a vertical rod; 45 is a reinforcing rod; 5 is a support hook; 51 is a connecting rod; 52 is a directional rod; 6 is a first arc groove; 7 is a first pivot; 8 is a second arc groove; 9 is a second pivot; 10 is a spring; 20 is a binding strap; 201 is a hanging hole; and 202 is a collar. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figures 1 to 4As shown, a fall protection device for working at height includes a hook 1, a stop arm 2 rotatably mounted on one side of the opening 11 of the hook, and a shaft hole on the hook 1. The stop arm 2 is rotatably mounted in the shaft hole via a pin 14. Rotation of the stop arm 2 opens or closes the opening 11. A fixing ring 12 for connecting to the safety rope of the worker is provided on the lower side of the hook 1. The hook 1 is also provided with a pull strap 3 and a rebound structure. The rebound structure drives the stop arm 2 to rotate and close the opening 11. The pull strap 3 can drive the stop arm 2 to rotate and open the opening 11. It also includes a column 4. A hook 5 is provided at the upper end of the column 4. A hanging ring 13 that cooperates with the hook 5 is provided on the hook 1. In use, the safety rope of the worker is fixedly connected in the fixing ring 12. Then the hook 5 at the end of the column 4 supports the hanging ring 13, lifting the hook 1 to the required height. Then the pull strap is pulled to open the opening 11 and hang the hook 1 on the external tower. Then the pull strap 3 is released, and the rebound structure drives the stop arm 2 to close the opening 11. At this time, the hook 1 and the stop arm 2 form a closed ring and are fixed on the external tower. The worker can then climb to the tower to work. During the climbing process, there is no need to repeatedly move the position of the hook 1. After the worker finishes their work and descends from the tower, they use the hook 5 to support the hanging ring 13, pull the strap 3 to open the opening 11, then detach the hook 1 from the tower, release the strap 3, and the column 4 will lower the hook 1 for retrieval. Furthermore, the length of the column 4 should not be less than the worker's working height; when the hook 1 is fixed to the tower, it should be long enough for a person on the ground to hold onto the strap 3.

[0024] A first arc groove 6 is provided on the hook 1, and a first pivot 7 is provided on the stop arm 2. The middle part of the first pivot 7 passes through the first arc groove 6 and both ends of the first pivot 7 are fixed on the stop arm 2. The end of the pull strap 3 is fixed on the first pivot 7, and the pull strap 3 drives the first pivot 7 to move within the first arc groove 6. The rebound structure includes a spring 10 and a second pivot 9. A second arc groove 8 is also provided between the pin 14 on the hook 1 and the first arc groove 6. The spring 10 is disposed within the second arc groove 8. The middle part of the second pivot 9 passes through the second arc groove 8 and both ends of the second pivot 9 are fixed on the stop arm 2. The lower end of the spring 10 is fixed to the bottom of the second arc groove 8, and the upper end of the spring 10 is disposed on the lower side of the second pivot 9. At the same time, the spring 10 keeps the second pivot 9 at the upper end of the second arc groove 8. When in use, pulling the strap 3 causes the first pivot 7 to move downwards. At this time, the stop arm 2 rotates upwards around the pivot pin 14 to open the opening 11. Simultaneously, the second pivot 9 moves downwards to compress the spring 10. When the strap 3 is released, the spring 10 returns to its original shape and pushes the second pivot 9 upwards. The first pivot 7 moves upwards, and at this time, the stop arm 2 rotates downwards around the pivot pin 14 to close the opening 11.

[0025] In one embodiment, the column 4 comprises a plurality of hollow tubes 41, which are sequentially nested together to form a telescopic column, facilitating storage and transportation of the column 4. Adjacent hollow tubes 41 are provided with a snap-fit ​​structure, which includes an elastic snap protrusion 42 located on the lower side of the inner hollow tube and a snap hole 43 located on the upper side of the outer hollow tube. The elastic snap protrusion has a geometric shape, and the snap hole conforms to the shape of the elastic snap protrusion. Preferably, the elastic snap protrusion 42 is rectangular, square, or rounded square. The elastic snap protrusion 42 is elastically positioned on the sidewall of the hollow tube 41 and protrudes beyond the sidewall of the hollow tube 41. A hook 5 is located at the upper end of the innermost hollow tube. In use, place the column 4 upright on the ground, then pull the hollow tubes 41 upwards from the inside out. When the elastic protrusion 42 on the inner hollow tube pops out and engages with the locking hole 43 on the outer hollow tube, continue to pull out the next hollow tube 41 upwards until the elastic protrusion 42 on the hollow tube adjacent to the outermost hollow tube engages and is fixed in the locking hole 43 on the outermost hollow tube, thus completing the extension of the column 4. When retracting the column 4, press the elastic protrusion 42 to disengage it from the locking hole 43, and retract the hollow tubes 41 downwards from the outside in.

[0026] In this embodiment, a mounting hole is provided on the side wall of the hollow tube 41, and an elastic locking protrusion 42 is disposed in the mounting hole. A spring or elastic clip is provided between the elastic locking protrusion and the inner side wall of the hollow tube to drive the elastic locking protrusion 42 to maintain its protrusion from the outer side wall of the hollow tube. The edge of the elastic locking protrusion is engaged with the inner side wall of the mounting hole edge. Furthermore, a limiting structure is provided inside the hollow tube. The limiting structure is disposed on the upper part of the elastic locking protrusion and / or the spring to prevent the elastic locking protrusion or the spring from being squeezed or damaged when adjacent hollow tubes retract.

[0027] In one embodiment, the hook 5 is U-shaped with its opening facing upwards, and a connecting rod 51 extends laterally from one side of the open end of the hook 5. A vertical rod 44 is provided at the upper end of the column 4. The connecting rod 51 is fixedly connected to the vertical rod 44 and its end extends beyond the vertical rod 44. The hook 5 is connected to the column 4 via the connecting rod 51 and the vertical rod 44. The connection between the connecting rod 51 and the vertical rod 44 is by welding. A strap 20 is also included, preferably a rubber strap. The strap 20 has a hanging hole 201 that can be fitted onto the connecting rod 51. At the other end of the strap 20 is a collar 202 that fits onto the column 4. The collar 202 fits onto the outside of the column, so that when the column 4 is retracted and folded, the hanging hole 201 fits onto the connecting rod 51 to prevent the hollow tube 41 from automatically detaching and extending. A directional rod 52 extends laterally from the other side of the open end of the hook 5, which facilitates the positioning and guidance of the hook 5 inside the hanging ring 13. Furthermore, the hanging ring 13 is triangular to prevent the hook 1 from swaying when it is attached to the pole, which would make the attachment difficult.

[0028] In a preferred embodiment, a reinforcing rod 45 is also included, with one end of the reinforcing rod 45 connected to the U-shaped hook 5 and the other end connected to the vertical rod 44, making the connection between the hook 5 and the vertical rod more secure.

[0029] In one embodiment, a locking hole 15 is provided on one side of the opening 11 of the hook, and a locking hook 21 is provided at the end of the stop arm 2. When the stop arm 2 closes the opening 11 of the hook, the locking hook 21 is engaged in the locking hole 15. This can prevent the hook 1 from falling off due to the stop arm being opened from the inside. At the same time, the locking hole 15 will not interfere with the rotation of the stop arm 2.

[0030] In use, the safety rope of the worker is fixed inside the fixing ring 12, and the hanging ring 13 is hung on the hook 5. Then, the column 4 is made upright on the ground. The hollow tube is pulled out from the inside to the outside, so that the hook 1 is gradually raised. When the hook 1 is raised to the required working height, the ground personnel pull the strap 3, which drives the stop arm 2 to rotate upward to open the opening 11, so that the hook 1 is hooked on the external tower. Then, the strap 3 is released, and the spring structure drives the stop arm to rotate and close the opening 11. The locking hook 21 is engaged in the locking hole 15, thus completing the suspension of the hook 1. The column 1 is retracted and folded. The worker is tied to the safety rope and can then climb the tower to carry out high-altitude work. During the climbing process, the safety rope can be gradually tightened, or an automatically retractable safety rope can be used. After the workers finish their inspection and descend to the ground, they raise the column 4 and allow the hook 5 to support the hanging ring 13. They then pull the strap 3 to open the opening 11, detaching the hook 1 from the tower. Finally, they retract the column 4, completing the retrieval of the fall arrest device. The overall structure is easy to use.

[0031] This embodiment is merely an illustration of the concept and implementation of this utility model, and is not intended to limit it. Under the concept of this utility model, the technical solution without substantial changes is still within the protection scope.

Claims

1. A fall protection device for working at height, comprising a hook, a stop arm rotatably mounted at the opening of the hook, and a fixing ring on the lower side of the hook for connection to the safety rope of the worker working at height, characterized in that, The hook is also equipped with a pull strap and a spring-loaded structure. The spring-loaded structure drives the stop arm to close the opening, and the pull strap can drive the stop arm to rotate and open the opening. It also includes a column with a hook at the upper end and a hanging ring that cooperates with the hook. In use, the column lifts the hook to the required height, then the pull strap is pulled to open the opening and hang the hook on the external pole. Then the pull strap is released, and the spring-loaded structure drives the stop arm to close the opening.

2. The high-altitude operation fall protection device as described in claim 1, characterized in that, The hook is provided with a first arc groove, and the stop arm is provided with a first pivot. The first pivot passes through the first arc groove and both ends of the first pivot are fixed to the stop arm. One end of the pull strap is fixed to the first pivot, and the pull strap drives the first pivot to move within the first arc groove.

3. The high-altitude operation fall protection device as described in claim 2, characterized in that, The rebound structure includes a spring and a second pivot; a second arc groove is also provided on the hook, and the spring is disposed in the second arc groove; the second pivot passes through the second arc groove and both ends of the second pivot are fixed on the stop arm, and the spring keeps the second pivot at the upper end of the second arc groove.

4. The high-altitude operation fall protection device as described in any one of claims 1 to 3, characterized in that, The hook has a shaft hole, and the stop arm is rotatably mounted in the shaft hole via a shaft pin.

5. The high-altitude operation fall protection device as described in any one of claims 1 to 3, characterized in that, The column comprises several hollow tubes, which are sequentially nested together to form a telescopic column. Adjacent hollow tubes are provided with a snap-fit ​​structure, which includes an elastic snap protrusion on the lower side of the inner hollow tube and a snap hole on the upper side of the outer hollow tube.

6. The high-altitude operation fall protection device as described in claim 5, characterized in that, The hanging ring is triangular; the length of the upright is not less than the working height of the worker at height.

7. The high-altitude operation fall protection device as described in claim 6, characterized in that, The hook is U-shaped with the opening facing upwards, and the open end of the hook extends laterally to both sides to form a connecting rod and a directional rod. A vertical rod is provided at the upper end of the column, and the connecting rod is fixedly connected to the vertical rod and its end extends beyond the vertical rod.

8. The high-altitude operation fall protection device as described in claim 7, characterized in that, It also includes a reinforcing rod, one end of which is connected to the U-shaped hook and the other end of which is connected to the vertical rod.

9. The high-altitude operation fall protection device as described in claim 1, characterized in that, A locking hole is provided on the open side of the hook, and a locking hook is provided at the end of the stop arm. When the stop arm closes the opening of the hook, the locking hook is engaged in the locking hole.

10. The fall protection device for high-altitude operations as described in claim 1, characterized in that, It also includes a strap with a hanging hole that can be fitted onto the connecting rod, and a collar that can be fitted onto the column at the other end of the strap. The strap is a rubber strap.

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