Rope distance measuring device for emergency descent control device

Abstract

The utility model discloses an emergency descent control device rope distance measuring device which comprises a descent control device body, a rope is arranged in the descent control device body, a box is arranged at one end of the rope, the inner wall of the box is rotationally connected with a rotating shaft, the outer side of the rotating shaft is fixedly connected with a wind-up roller, a Hall encoder is fixedly installed on the outer side of the wind-up roller, and the outer side of the rotating shaft is fixedly connected with a gear. A toothed plate is arranged below the gear, the bottom face of the toothed plate is fixedly connected with a magnetic block, one end of a rope is fixedly connected with a check block, a connector is arranged on the outer side of the check block, and a pressure sensor is fixedly installed on the connector. According to the rope distance measuring device, the rope drives the winding roller to rotate, the Hall encoder detects the number of rotation turns of the rotating shaft, the length of the rope can be judged, the rope distance can be measured, and when the stress of the pressure sensor is suddenly reduced, the electrified magnet is electrified to generate repulsive force to push the toothed plate and the gear to be meshed and clamped to limit rotation of the winding roller; the box body and the descent control device are matched to form a double-layer lock, so that the operation safety of workers is improved.

Description

Technical Field

[0001] This utility model relates to the field of descent device technology, specifically to an emergency descent device for measuring rope distance. Background Technology

[0002] Emergency descent devices are commonly used in high-altitude operations or rescues to prevent people from falling, and are a widely used safety device. A descent device consists of a hook, harness, rope, and speed control, and is a safety rescue device that allows a person to descend slowly along a rope. It can be installed using specialized installation tools at building windows, balconies, or rooftops, and can also be mounted on aerial ladder trucks.

[0003] The core function of an emergency descent device is to trigger braking during a fall to prevent people from falling. The length of the rope affects the braking reaction speed. In addition, when using descent devices in high-rise buildings, the buffer resistance coefficient needs to be dynamically adjusted according to the rope distance (such as 30 meters, 100 meters, etc.) to ensure the protection of construction workers and avoid the instantaneous impact force exceeding the human body's tolerance limit. Therefore, it is necessary to test the rope distance. Utility Model Content

[0004] The purpose of this invention is to provide an emergency descent device for measuring rope distance, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an emergency descent device for measuring rope distance, comprising a descent device body, a rope disposed inside the descent device body, a box disposed at one end of the rope, the inner wall of the box being rotatably connected to a rotating shaft, the outer side of the rotating shaft being fixedly connected to a winding roller, a Hall encoder being fixedly mounted on the outer side of the winding roller, a gear being fixedly connected to the outer side of the rotating shaft, a toothed plate disposed below the gear, a magnetic block being fixedly connected to the bottom surface of the toothed plate, one end of the rope being fixedly connected to a stop block, a connector disposed on the outer side of the stop block, and a pressure sensor being fixedly mounted on the connector.

[0006] Preferably, the descent device body is rotatably connected to the take-up roller via a rotating shaft, and one end of the rope extends into the box and is wound around the surface of the take-up roller.

[0007] Preferably, the Hall encoder and the gear are located on both sides of the take-up roller, and the outer side of the gear meshes with the toothed plate.

[0008] Preferably, a rectangular groove is formed inside the housing, and the rectangular groove slides in conjunction with the toothed plate.

[0009] Preferably, the bottom of the rectangular groove cavity is fixedly connected to a magnet, and the magnet is located below the magnetic block.

[0010] Preferably, the other end of the rope extends into the joint and is fixedly connected to the stop block. A circular through hole is opened on the top surface of the joint for the rope to pass through. The joint is adapted to the pressure sensor through the circular through hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention connects to the construction worker via a connector and fixes the decelerator body. When the construction worker moves, the rope drives the winding roller to rotate. The length of the rope can be determined by detecting the number of rotations of the rotating shaft using a Hall encoder, thus measuring the rope pitch. When the construction worker experiences weightlessness, the force on the pressure sensor suddenly decreases, which causes the electromagnet to be energized, generating a repulsive force that pushes the toothed plate and gear to mesh and engage, thereby limiting the rotation of the winding roller. The pressure sensor allows for faster feedback protection against worker weightlessness. The combination of the housing and the decelerator forms a double lock to improve worker safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the rope and connector connection structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the internal structure of the box of this utility model;

[0016] Figure 4 This is a perspective view of the box structure of this utility model.

[0017] In the diagram: 1. Descending device body; 2. Rope; 3. Housing; 4. Rotating shaft; 5. Rewinding roller; 6. Hall encoder; 7. Gear; 8. Rectangular groove; 9. Tooth plate; 10. Magnetic block; 11. Electromagnet; 12. Stop; 13. Connector; 14. Pressure sensor. 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, 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.

[0019] Please see Figure 1-4This utility model provides a technical solution: an emergency descent device for measuring rope distance, including a descent body 1. A hanging lug is provided on the top of the descent body 1, allowing it to be connected and fixed to any target. During high-altitude operations, workers can use the hanging lug to connect and fix the descent body 1 to an anchor. A rope 2 is installed inside the descent body 1, with a stop block 12 at one end and a connector 13 on the outside of the stop block 12. Workers connect and fix the hanging lug on their safety belt to the connector 13, thus achieving a fall-stopping effect in conjunction with the descent body 1. The operation is convenient. Simultaneously, the other end of the rope 2 extends into the housing 3 and is wound around the surface of the winding roller 5. Therefore, the rope 2 is locked in the first stage by the descent body 1, and a second stage is achieved by fixing the winding roller 5 to prevent rope 2 movement, thereby effectively enhancing the protective strength of the descent device.

[0020] A housing 3 is attached to one end of the rope 2. The inner wall of the housing 3 is rotatably connected to a rotating shaft 4. The outer side of the rotating shaft 4 is welded and fixed to a take-up roller 5. Circular baffles are installed on both sides of the take-up roller 5 to limit the movement of the rope 2 and prevent the rope 2 from disengaging from the take-up roller 5. During construction work, the weight of the construction worker drives the rope 2 to move outside the take-up roller 5, thus preventing the rope 2 from getting tangled. Damping is installed at the connection between the rotating shaft 4 and the housing 3 to ensure that the rope 2 extends with the movement of the construction worker. A rotating handle is installed on one side of the housing 3. By rotating the handle, the rotating shaft 4 and the take-up roller 5 can be rotated, and the rope 2 can be stored on the surface of the take-up roller 5 for the next use.

[0021] The take-up roller 5 is fixedly mounted to the outside of a Hall encoder 6. The Hall encoder 6 can detect the number of rotations of the take-up roller 5 and directly feed back the number of rotations as the rope distance, and detect the rope pitch. The rotating shaft 4 is welded and fixed to the outside of a gear 7. A controller is installed on the top of the housing 3. The Hall encoder 6 is electrically connected to the guide and the controller. The Hall encoder 6 and the gear 7 are located on opposite sides of the take-up roller 5, thus avoiding mutual interference between the Hall encoder 6 and the gear 7.

[0022] A toothed plate 9 is installed below the gear 7. The bottom surface of the toothed plate 9 is welded and fixed to the magnetic block 10. The other end of the rope 2 extends into the connector 13 and is welded and fixed to the stop block 12. A circular through hole is opened on the top surface of the connector 13 for the rope 2 to pass through. The connector 13 is adapted to the pressure sensor 14 through the circular through hole. The connector 13 prevents the rope 2 from falling off the connector 13. At the same time, the stop block 12 can effectively pull the worker's weight and squeeze it against the pressure sensor 14. The pressure sensor 14 can detect the worker's weight. When the worker loses weight, the pressure of the stop block 12 on the pressure sensor 14 will drop sharply, so the pressure sensor 14 can provide timely feedback for protection, improving the timeliness of the descent device's protection.

[0023] The decelerator body 1 is rotatably connected to the take-up roller 5 via a rotating shaft 4. The outer side of the gear 7 meshes with the toothed plate 9. A rectangular groove 8 is formed inside the housing 3, and the toothed plate 9 slides inside the rectangular groove 8. The bottom of the inner cavity of the rectangular groove 8 is welded and fixed to the electromagnet 11, which is located below the magnetic block 10. Under natural conditions, the toothed plate 9 moves downward under the influence of the gravity of the magnetic block 10. Therefore, the toothed plate 9 will not affect the normal rotation of the rotating shaft 4. The locking effect on the take-up roller 5 is achieved by controlling the upward movement distance of the toothed plate 9 by the magnitude of the current of the electromagnet 11. Similarly, the gear 7 and toothed plate 9 can be replaced with a damping block and damping plate for locking and limiting.

[0024] Working principle: In use, the lugs on the top of the descent device 1 are connected and fixed to the target location, and the connector 13 is connected and fixed to the lugs on the worker's body. When the worker moves, the rope 2 slides on the descent device 1, and at the same time, the take-up roller 5 rotates. The Hall encoder 6 detects the number of rotations of the take-up roller 5, and feeds back the number of rotations as the rope distance, so as to realize the detection of the rope distance. This allows for the selection of an appropriate resistance coefficient based on the length of the rope 2 for the worker. Progressive braking enhances the protection of the worker. When the worker loses weight, the first line of protection is achieved through the weight-stopping effect of the descent device 1 itself. When the worker loses weight, the pressure between the stop block 12 and the pressure sensor 14 will drop sharply. The pressure sensor 14 can detect the pressure change to determine whether weightlessness has occurred. Subsequently, the electromagnet 11 is energized and generates a repulsive force, which pushes the magnetic block 10 to slide inside the rectangular groove 8 until the toothed plate 9 and the outer side of the gear 7 mesh and engage, thereby limiting the take-up roller 5 and realizing the second line of protection.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An emergency descent device for measuring rope distance, comprising a descent device body (1), characterized in that: The descent device body (1) is equipped with a rope (2) inside. One end of the rope (2) is equipped with a box (3). The inner wall of the box (3) is rotatably connected to the rotating shaft (4). The outer side of the rotating shaft (4) is fixedly connected to the winding roller (5). A Hall encoder (6) is fixedly installed on the outer side of the winding roller (5). The outer side of the rotating shaft (4) is fixedly connected to the gear (7). A toothed plate (9) is provided below the gear (7). The bottom surface of the toothed plate (9) is fixedly connected to the magnetic block (10). One end of the rope (2) is fixedly connected to the stop block (12). A connector (13) is provided on the outer side of the stop block (12). A pressure sensor (14) is fixedly installed on the connector (13).

2. The rope distance measuring device for an emergency descent device according to claim 1, characterized in that: The body (1) of the descent device is rotatably connected to the take-up roller (5) via a rotating shaft (4), and one end of the rope (2) extends into the box (3) and is wrapped around the surface of the take-up roller (5).

3. The rope distance measuring device for an emergency descent device according to claim 2, characterized in that: The Hall encoder (6) and the gear (7) are located on both sides of the take-up roller (5), and the outer side of the gear (7) meshes with the toothed plate (9).

4. The rope distance measuring device for an emergency descent device according to claim 3, characterized in that: The box body (3) has a rectangular groove (8) inside, and the rectangular groove (8) slides in conjunction with the toothed plate (9).

5. The rope distance measuring device for an emergency descent device according to claim 4, characterized in that: The bottom of the inner cavity of the rectangular groove (8) is fixedly connected to the magnet (11), which is located below the magnetic block (10).

6. The rope distance measuring device for an emergency descent device according to claim 2, characterized in that: The other end of the rope (2) extends into the connector (13) and is fixedly connected to the stop (12). The top surface of the connector (13) has a circular through hole for the rope (2) to pass through. The connector (13) is adapted to the pressure sensor (14) through the circular through hole.

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