Safety rope for elevator maintenance

Abstract

The utility model relates to the technical field of elevator maintenance, and discloses a safety rope for elevator maintenance, which comprises a buckle, one end of the buckle is detachably connected with one end of the safety rope, the outer wall of the safety rope is slidably sleeved with a sleeve, and an extrusion block for extruding the outer wall of the safety rope is slidably mounted in an inner cavity of the sleeve. And a driving piece for controlling the extrusion block to move is arranged on the outer wall of the sleeve and used for controlling the distance between the extrusion block and the outer wall of the safety rope, and the safety rope is fixed by increasing the friction force between the extrusion block and the safety rope. According to the safety rope fixing device, the distance between every two adjacent positioning blocks and extrusion blocks is rapidly adjusted through the driving piece, so that the safety rope with the adjusted length is limited, and when a maintainer connects the safety rope with an anchor point on the inner wall of an elevator shaft, the maintainer only needs to directly connect a locking ring on the outer wall of a sleeve with the anchor point; and the safety rope and the anchor point do not need to be fixed after being mutually wound, so that the risk and the required time and energy when one end of the safety rope is connected with the anchor point are reduced.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance technology, and in particular to a safety rope for elevator maintenance. Background Technology

[0002] Elevator maintenance safety ropes are crucial fall protection tools for workers at heights, used to prevent falls during elevator maintenance and inspection. The correct selection and use of safety ropes are directly related to the safety of maintenance personnel.

[0003] Currently, before inspecting and repairing an elevator car, elevator maintenance personnel need to enter the elevator shaft from the floor above the damaged elevator. Before entering the elevator shaft, they first put on a safety harness (five-point or double-shoulder), and then connect one end of the safety rope to the harness using a buckle. Next, the maintenance personnel need to hold the safety rope and enter the elevator shaft. Then, they need to connect one end of the safety rope to an anchor point (such as a lifting ring or steel structure) inside the elevator shaft using a buckle. However, the length of the safety rope used by the maintenance personnel is generally greater than the floor height (to ensure that the safety rope is long enough for the maintenance personnel to smoothly climb to the top of the car via the internal ladder of the elevator shaft from the floor above the damaged elevator). When the maintenance personnel stand on the top of the car, the excess safety rope will accumulate on the top of the car, which increases the possibility of the safety rope getting tangled with internal components (guide rails or cables) of the elevator shaft.

[0004] In existing technologies, to address this issue, maintenance personnel typically wrap part of the safety rope around the outside of the anchor point (the length of the wrapped safety rope is sufficient to ensure that maintenance personnel can reach the top of the car without hindering their movement). After the safety rope is wrapped around the anchor point, one end of the safety rope is then connected to the anchor point using a buckle. Although this can change the length of the safety rope and reduce redundant rope length, thus lowering the risk of entanglement, maintenance personnel need to operate with one hand when wrapping the safety rope around the anchor point (the other hand must firmly grip the climbing frame to prevent falling), thereby increasing the risk and the time and effort required when connecting the safety rope to the anchor point. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a safety rope for elevator maintenance, aiming to improve the problems in the existing technology.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a safety rope for elevator maintenance, comprising:

[0007] Safety rope;

[0008] The buckle is detachably connected to one end of the safety rope. A sleeve is slidably fitted onto the outer wall of the safety rope. A compression block for squeezing the outer wall of the safety rope is slidably installed in the inner cavity of the sleeve. A drive component for controlling the movement of the compression block is provided on the outer wall of the sleeve. The drive component is used to control the distance between the compression block and the outer wall of the safety rope. The safety rope is fixed by increasing the friction between the compression block and the safety rope.

[0009] As a further description of the above technical solution:

[0010] The driving component includes a connecting pipe and a positioning block. One end of the positioning block is fixedly connected to the inner wall of the sleeve, and one end of the connecting pipe is fixedly connected to the inner wall of the sleeve. A sliding rod is slidably installed in the inner cavity of the connecting pipe. One end of the sliding rod is fixedly connected to the end of the extrusion block away from the safety rope, and the other end of the sliding rod is provided with a threaded hole. A driving rod is installed in the inner cavity of the threaded hole through threaded engagement. The outer wall of the driving rod is provided with a threaded groove that matches the threaded hole.

[0011] As a further description of the above technical solution:

[0012] Both the compression block and the positioning block are bent at the ends near the safety rope, and the middle of the ends of the compression block and the positioning block near the safety rope are at the same horizontal line.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the drive rod is fixedly fitted with a drive bearing that is connected to the inner wall of the connecting pipe, and one end of the drive rod extends to the outside of the connecting pipe. The end of the drive rod extending to the outside of the connecting pipe is fixedly mounted with a drive disc for its own rotation.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the slide bar is fixedly equipped with a guide bar, and the inner wall of the connecting pipe is provided with a guide groove that matches the guide bar.

[0017] As a further description of the above technical solution:

[0018] Multiple guide wheels are rotatably installed on both sides of the inner cavity of the connecting tube to reduce the friction of the safety rope, and the outer walls of the multiple guide wheels are in contact with the outer wall of the safety rope.

[0019] This utility model has the following beneficial effects:

[0020] In this invention, the distance between two adjacent positioning blocks and the squeezing blocks is quickly adjusted by the driving component. This squeezing of the outer wall of the safety rope by the squeezing blocks and the positioning blocks limits the length of the safety rope after adjustment. This precisely controls the distance between the connection end of the safety rope and the buckle and one end of the sleeve. When maintenance personnel connect the safety rope to the anchor point on the inner wall of the elevator shaft, they can directly connect the locking ring on the outer wall of the sleeve to the anchor point without having to twist the safety rope and the anchor point together for fixation. This reduces the risk and the time and effort required when connecting one end of the safety rope to the anchor point. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is an assembly drawing of the guide wheel and sleeve of this utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0024] Figure 4 This utility model Figure 2 Enlarged view of the structure at point B.

[0025] Legend:

[0026] 1. Sleeve; 2. Connecting pipe; 3. Drive disc; 4. Guide wheel; 5. Slide rod; 6. Positioning block; 7. Extrusion block; 8. Drive rod; 9. Drive bearing; 10. Guide bar. Detailed Implementation

[0027] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1-4 One embodiment of this utility model provides: a safety rope for elevator maintenance, comprising:

[0029] The safety rope has a speed-differential fall arrester slidably installed on its outer wall. When maintenance personnel descend along the elevator shaft, one end of the safety rope descends with them. If a rapid fall occurs during the climb, the phase velocity between the safety rope and the speed-differential fall arrester increases. At this point, the speed-differential fall arrester can lock the falling safety rope, thereby controlling the fall distance within a safe range and protecting the maintenance personnel (this is existing technology and will not be elaborated further here).

[0030] The buckle is detachably connected to one end of the safety rope. Before entering the elevator shaft, first put on the safety belt (five-point or double-shoulder type), and then connect one end of the safety rope to the safety belt through the buckle. This allows the safety rope to be connected to the maintenance personnel, thus protecting the maintenance personnel inside the elevator shaft.

[0031] The safety rope has a sleeve 1 that slides onto its outer wall. A locking ring is rotatably installed on the outer wall of the sleeve 1. After the maintenance personnel enter the elevator shaft, they hold the sleeve 1 and move towards the anchor point inside the elevator shaft using a climbing frame. When the maintenance personnel reach the vicinity of the anchor point, they connect the locking ring on the outside of the sleeve 1 to the anchor point, thus completing the connection between one end of the safety rope and the anchor point.

[0032] A compression block 7 for squeezing the outer wall of the safety rope is slidably installed in the inner cavity of the sleeve 1. A positioning block 6 is fixedly installed on the inner wall of the sleeve 1. One end of the sleeve 1 is fixedly connected to one end of the connecting pipe 2. A slide rod 5 is slidably installed in the inner cavity of the connecting pipe 2. One end of the slide rod 5 is fixedly connected to the end of the compression block 7 away from the safety rope. Before the maintenance personnel enter the elevator shaft, they first visually measure the distance between the anchor point and the top of the car. When the distance between the buckle at one end of the safety rope and one end of the sleeve 1 is much greater than the distance from the anchor point to the top of the car, the end of the safety rope away from the buckle is pulled. At this time, the safety rope slides along the inner cavity of the sleeve 1, allowing the end of the safety rope connected to the buckle to continuously move closer to the sleeve 1 until the distance between the connection end of the safety rope and the buckle to one end of the sleeve 1 is reduced to close to the distance from the anchor point to the top of the car. After the distance between the connection end of the safety rope and the buckle and one end of the sleeve 1 is adjusted, the compression block 7 and the positioning block 6 are used to fix the safety rope.

[0033] The distance between the connection end of the safety rope and the buckle and the end of the sleeve 1 is reduced to 1-1.5 meters longer than the distance from the anchor point to the top of the car. When maintenance personnel climb to the top of the car using the climbing frame, it does not hinder their activities (such as bending over and squatting), which facilitates maintenance of the elevator. At the same time, it prevents excess safety rope from accumulating on the top of the car and getting tangled with internal components (guide rails or cables) in the elevator shaft, thus improving the convenience for maintenance personnel to move up using the climbing frame.

[0034] When the safety rope is fixed by the compression block 7 and the positioning block 6, the slide bar 5 is pushed to move it closer to the safety rope until the end of the compression block 7 away from the slide bar 5 contacts the outer wall of the safety rope and continues to push the safety rope closer to the positioning block 6 until the side of the safety rope away from the compression block 7 and the end of the compression block 7 are in contact. As the slide bar 5 continues to move, the compression block 7 and the positioning block 6 continuously apply pressure to the outer wall of the safety rope, increasing the friction between the compression block 7 and the positioning block 6 and the outer wall of the safety rope. Thus, the safety rope is fixed by the compression block 7 and the positioning block 6, preventing the safety rope from moving along the inner cavity of the sleeve 1 again. This precisely controls the distance between the connection end of the safety rope and the buckle and one end of the sleeve 1. When maintenance personnel connect the safety rope to the anchor point on the inner wall of the elevator shaft, they can directly connect the locking ring on the outer wall of the sleeve 1 to the anchor point without having to twist the safety rope and the anchor point together for fixing. This reduces the risk and the time and effort required when connecting one end of the safety rope to the anchor point.

[0035] The other end of the slide rod 5 has a threaded hole. The drive rod 8 is installed in the inner cavity of the threaded hole through threaded engagement. The outer wall of the drive rod 8 has a threaded groove that matches the threaded hole. When it is necessary to adjust the distance between one end of the compression block 7 and the outer wall of the safety rope, the drive rod 8 is rotated. With the cooperation of the threaded hole and the threaded groove, the slide rod 5 can move along its own axis and be positioned after movement. This allows the positioning block 6 to press and release the pressure on the outer wall of the safety rope, enabling the safety rope to move and be positioned repeatedly in the inner cavity of the sleeve 1. This is beneficial for accurately controlling the distance between the connection end of the safety rope and the buckle and one end of the sleeve 1.

[0036] The slide bar 5 and the drive bar 8 constitute the driving component for adjusting the compression block 7. The distance between two adjacent positioning blocks 6 and compression blocks 7 can be quickly adjusted through the adjustment component. Thus, the compression block 7 and the positioning block 6 compress the outer wall of the safety rope, thereby limiting the length of the safety rope after adjustment.

[0037] A guide bar 10 is fixedly installed on the outer wall of the slide bar 5. A guide groove that matches the guide bar 10 is opened on the inner wall of the connecting pipe 2. When the slide bar 5 moves along its own axis, the guide bar 10 slides along the inner wall of the guide groove, thereby limiting the movement trajectory of the slide bar 5 and preventing the slide bar 5 from rotating together with the drive rod 8, which would cause one end of the squeezing block 7 to fail to contact the outer wall of the fixed rope.

[0038] The compression block 7 and the positioning block 6 are both bent at the ends near the safety rope, which increases the contact area between the ends of the positioning block 6 and the compression block 7 and the outer wall of the safety rope, thereby increasing the friction on the outer wall of the safety rope and improving the stability of the safety rope after it is fixed by the compression block 7 and the positioning block 6.

[0039] The compression block 7 and the positioning block 6 are aligned at the same horizontal level at the middle of the end closest to the safety rope. This ensures that the central axes of the compression block 7 and the positioning block 6 are aligned at the same horizontal level, thereby increasing the compression force of the positioning block 6 and the compression block 7 on the outer wall of the safety rope and improving the fixation force of the safety rope.

[0040] The outer wall of the drive rod 8 is fixedly sleeved with a drive bearing 9 that is connected to the inner wall of the connecting pipe 2. The drive bearing 9 can support the drive rod 8, prevent the drive rod 8 from shaking when rotating, and improve the stability and smoothness of the drive rod 8.

[0041] One end of the drive rod 8 extends outside the connecting pipe 2. A drive disc 3 for its own rotation is fixedly installed at the end of the drive rod 8 that extends outside the connecting pipe 2. The sleeve 1 is set with a U-shaped structure. The connecting pipes 2 are symmetrically installed on both sides of the inner cavity of the sleeve 1. The drive disc 3 is located between the two connecting pipes 2. A slide rod 5 and a drive rod 8 are installed in the inner cavity of each of the two connecting pipes 2. When the drive disc 3 is rotated, the two drive rods 8 can rotate synchronously, thereby increasing the number of fixing points on the outside of the safety rope and further improving the stability of the safety rope after it is fixed.

[0042] The U-shaped structure of the sleeve 1 reduces its own area and the space required for carrying the sleeve 1.

[0043] Multiple guide wheels 4 are rotatably installed on both sides of the inner cavity of the connecting pipe 2 to reduce the friction of the safety rope. The outer walls of the multiple guide wheels 4 are in contact with the outer wall of the safety rope. When the safety rope moves in the inner cavity of the sleeve 1, the multiple guide wheels 4 rotate along the tangent direction to the safety rope, avoiding contact between the safety rope and the inner wall of the sleeve 1 when the safety rope moves, reducing the friction between the safety rope and the inner wall of the sleeve 1 when the safety rope moves, and improving the smoothness of the safety rope movement.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety rope for elevator maintenance, characterized by: The utility model provides a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device.

2. A safety rope for elevator maintenance according to claim 1, characterized in that: The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device.

3. A safety rope for elevator maintenance according to claim 2, characterized in that: The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device.

4. A safety rope for elevator maintenance according to claim 2, characterized in that: The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device.

5. A safety rope for elevator maintenance according to claim 2, characterized in that: The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device.

6. A safety rope for elevator maintenance according to claim 5, characterized in that: The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. The utility model discloses a safety rope fixing device of a safety rope, and belongs to the field of safety rope fixing device. 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