Escape rope structure

Abstract

The utility model discloses an escape rope structure belongs to fire control technical field. Including fixed box, the fixed box is equipped with the baffle in the inside, is connected and is installed with the axle no.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection technology, specifically an escape rope structure. Background Technology

[0002] With the acceleration of urban construction, high-rise buildings are becoming more and more common. High-rise buildings have many advantages, such as effectively increasing land utilization and showcasing the urban landscape. However, they also bring some problems, such as making it difficult for people to escape in the event of a fire or other disaster.

[0003] Fire has become a frequent disaster that threatens public safety and endangers people's lives and property. According to statistics, about 10,000 fires occur every day worldwide, killing more than 2,000 people, injuring 3,000 to 4,000 people, and causing direct property losses of more than 1 billion yuan annually. The most fundamental lesson learned from past major fires that caused mass casualties and significant economic losses is to improve people's ability to evacuate and escape from fire scenes, which often requires the use of fire escape ropes.

[0004] Existing fire escape ropes are usually a type of slow descent device. After the user wears a safety harness, they can maintain a certain speed as they fall downwards. However, the speed of descent cannot be controlled, and it cannot be stopped midway down the fall. They can only land on the ground. This may cause injury to the escapee if the speed is too fast or if there is a danger on the ground. Another type of fire escape rope uses an adjustable slow descent device held in the hand. By rotating the slow descent device, the user can descend. However, this device has certain requirements for the user. The user needs to throw the rope out of the window. During the descent, the user's hands may be chafed and injured, making it more difficult to use. Utility Model Content

[0005] To address the problems of uncontrollable descent speed, high difficulty in use, and potential harm to users associated with existing escape ropes, this invention provides an escape rope structure.

[0006] This utility model is achieved through the following technical solution: An escape rope structure includes a fixed box with a partition inside. A shaft is mounted on the inner wall of the fixed box, and a rope-winding drum is rotatably connected to the shaft via a damping bearing. A nut is coaxially connected to one side of the rope-winding drum. A threaded rod threaded to the nut is rotatably connected to the fixed box, and a gear is mounted on the threaded rod. A pair of pressure-locked friction plates are connected between the gear and the partition. A shaft is rotatably connected to the side wall of the fixed box, and a gear meshing with the gear is mounted on the shaft. A rope-winding drum is also mounted on the shaft. The ratio of the diameter of the rope-winding drum to the number of teeth of the gear is greater than the ratio of the diameter of the rope-winding drum to the number of teeth of the gear. A rope is wound on the rope-winding drum in the same direction as the nut's loosening, and a rope is wound on the rope-winding drum in the opposite direction.

[0007] A further improvement of this invention is that the friction plate has several protrusions on one side, and the gear and the partition plate have corresponding grooves for fitting into the protrusions. Since the friction plate is a consumable part, by providing protrusions that fit into the grooves, the friction plate cannot slide relative to the gear and the partition plate in the circumferential direction. Only a new friction plate needs to be replaced after each use, thus reducing the overall cost of replacement in case of failure while ensuring safety.

[0008] A further improvement of this invention includes a fall arrest mechanism. This mechanism comprises an inner ratchet coaxial with shaft two, connected and mounted on the side wall of the fixed box. A mounting bracket corresponding to the inner side of the inner ratchet is connected and mounted on shaft two. A pawl is rotatably mounted on the mounting bracket, and one side of the pawl is connected to the mounting bracket via a tension spring. If friction fails and the user's falling speed reaches a certain value, the rotating pawl will pull the spring, causing centrifugal motion and engaging the pawl in the inner ratchet. This locks the rope-winding drum two, stopping its rotation, and the user is thus pulled in, providing an additional layer of safety.

[0009] A further improvement of this invention is that the free ends of rope one and rope two are connected. This prevents the user from forgetting to take rope two, becoming unable to descend, and needing to climb back into the window, causing unnecessary trouble.

[0010] A further improvement of this invention is that the bottom of the fixing box is provided with holes one and two for rope one and rope two to pass through. This prevents rope one and rope two from interfering with each other during descent, thus affecting the use of the device.

[0011] A further improvement of this invention is that the inner edges of holes one and two are respectively provided with polytetrafluoroethylene pads to protect and lubricate ropes one and two. This reduces friction between ropes one and two and the fixing box, improves rope safety, and makes the descent process smoother.

[0012] A further improvement of this invention is that the side of the fixing box is connected and installed with several lifting lugs for securing the fixing box. This makes fixing the device more convenient; it can be fixed to a load-bearing wall using expansion bolts.

[0013] A further improvement of this invention is that the friction plate is an elastic friction plate. Elastic friction plates are adaptable to periodic impacts, more suitable for frequent starts and stops, and can also reduce vibration, resulting in a more stable coefficient of friction.

[0014] As can be seen from the above technical solutions, the beneficial effects of this utility model are: In an emergency, the user puts on a safety harness, securely fastens Rope Two to the harness, and then, holding Rope One, climbs down from the windowsill. Due to the user's weight, Rope Two is under tension, which is then transmitted to Shaft Two, Gear Two, Gear One, and the threaded rod. The engagement of the threaded rod with the nut causes Gear One to press against the friction plate, locking the threaded rod. Rope Two then holds the user, preventing a fall. When the user pulls Rope One, causing the rope drum to rotate, the nut and threaded rod loosen slightly, releasing the friction plate. The threaded rod, under tension, begins to rotate. Since the downward force is greater than the pulling force, the threaded rod re-tightens with the nut, pressing against the friction plate and locking the threaded rod. The user will fall a short distance and be pulled back up. Continuing to pull Rope One will keep the user falling. This device allows the user to control their descent speed, and they can fall simply by pulling Rope One, without throwing the rope out the window. It is simple to operate and easy to use. There is no relative slippage between Rope Two and the user, preventing hand friction and injury, making it safer. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0018] Figure 3 for Figure 1 A partial structural diagram of the fall arrest mechanism.

[0019] Figure 4 This is a schematic diagram of the installation structure of the friction plate.

[0020] In the attached diagram: 1. Fixed box; 101. Partition plate; 2. Shaft 1; 21. Damping bearing; 3. Friction plate; 31. Protrusion; 32. Groove; 4. Rope winding drum 1; 5. Nut; 6. Threaded rod; 7. Gear 1; 8. Shaft 2; 9. Gear 2; 10. Rope winding drum 2; 12. Rope 1; 121. Hole 1; 13. Rope 2; 131. Hole 2; 14. Fall protection mechanism; 141. Inner ratchet; 142. Mounting bracket; 143. Pad; 144. Tension spring; 15. PTFE pad; 16. Lifting lug. Detailed Implementation

[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0022] like Figure 1-4 As shown, an escape rope structure includes a fixed box 1, with a partition 101 inside the fixed box 1. A shaft 2 is connected and installed on the inner side wall of the fixed box 1 on the right side of the partition 101. Two damping bearings 21 are connected and installed on the shaft 2. A rope winding drum 4 is rotatably connected to the outer side of the damping bearings 21. A nut 5 is coaxially connected to one side of the rope winding drum 4. A threaded rod 6, threaded to the nut 5, is rotatably connected and installed on the fixed box 1. The threaded rod 6 is capable of axial movement and is threaded only at its end. A gear 7 is connected and installed on the threaded rod 6 on the left side of the partition 101. A pair of friction plates 3, which are slidably mounted on the threaded rod 6 and can be locked under pressure, are connected and installed between the partition plate 101 and the partition plate 101. A shaft 2 8, parallel to shaft 2, is rotatably connected and installed on the side wall of the fixed box 1. A gear 2 9, which meshes with gear 7, is connected and installed on shaft 2 8 away from gear 2 9. A rope winding drum 2 10 is connected and installed on shaft 2 8 away from gear 2 9. The ratio of the diameter of rope winding drum 1 4 to the number of teeth of gear 7 is greater than the ratio of the diameter of rope winding drum 2 10 to the number of teeth of gear 2 9. Rope 1 12, which is wound in the same direction as the loosening of nut 5, is connected and wound on rope winding drum 2 10 in the opposite direction. Rope 2 13, which is wound on rope winding drum 2 10 in the opposite direction, is connected and wound on rope winding drum 2 10.

[0023] In an emergency, the user puts on the safety belt, securely fastens rope 2 13 to the safety belt, and then, holding rope 1 12, climbs down from the window ledge. Due to the user's weight, rope 2 13 is under tension, which is then transmitted to shaft 2 8, gear 2 9, gear 1 7, and threaded rod 6. Because the threaded rod 6 engages with nut 5, the side wall of gear 1 7 presses against friction plate 3. Since friction plate 3, mounted on partition 101, remains fixed, gear 1 7 is fixed, which in turn fixes the threaded rod 6. Therefore, rope 2 13 can hold the user and prevent them from falling. When the user pulls rope 1 12 to rotate the rope drum 1 4, it slightly rotates nut 5 and threaded rod 6. Slightly loosening the friction plate 3 releases the lock, and the threaded rod 6 begins to rotate. Because the threaded rod 6 rotates under the influence of gravity, while the nut 5 is pulled by the user, the rotational tendency of the threaded rod 6 is greater than that of the nut 5. Combined with the damping bearing 21, which hinders the rotation of the nut 5, the threaded rod 6 rotates faster than the nut 5. In other words, the speed at which the nut 5 loosens is less than the speed at which the threaded rod 6 tightens. Therefore, the threaded rod 6 will re-tighten with the nut 5, pressing against the friction plate 3 and locking the threaded rod 6. This causes the user to fall a short distance and be pulled back up. Continuously pulling rope 12 will continue the descent. The entire process of loosening and tightening the threaded rod 6 and nut 5 is extremely rapid, making the descent very smooth. This device allows the user to control their own descent speed, and simply pulling rope 1 is enough to fall without throwing the rope out the window. It is simple to operate and easy to use. Rope 2 13 does not slip relative to the user, preventing hand friction and injury, making it safer.

[0024] It should be noted that because the ratio of the diameter of the first rope drum 4 to the number of teeth of the first gear 7 is greater than the ratio of the diameter of the second rope drum 10 to the number of teeth of the second gear 9, the descent length of the first rope 12 is greater than that of the second rope 13. For example, if the first rope 12 descends 1 meter, the second rope 13 only descends half a meter. This ensures that the second rope 13 will not drag the first rope 12 down during the descent, thus ensuring the user's safety. Since the meshing rotation directions between the gears are opposite, the winding direction of the second rope 13 on the second rope drum 10 is opposite to the winding direction of the first rope 12 on the first rope drum 4. Furthermore, the winding direction of the first rope 12 is the same as the unwinding direction of the nut 5, causing the nut 5 to unscrew from the threaded rod 6 during the pulling process of the first rope 12. Because the bolt and nut apply a small circumferential torque, they can generate a large tensile force in the axial direction. Therefore, when the threaded rod 6 rotates due to the pull of the person's falling weight, it will bring a large axial pressure to the friction plate 3, causing it to clamp. When the clamping force between the friction plates 3 is sufficient, the friction between the friction plates 3 is sufficient to resist the person's weight, so the friction plate 3 stops rotating. Then the threaded rod 6 stops rotating, preventing the threaded rod 6 from further locking with the nut 5, thus preventing the nut 5 from locking up. This prevents the situation where the person cannot pull the rope 12 and cannot descend.

[0025] The friction plate 3 has several protrusions 31 on one side, and the gear 7 and the partition plate 101 have grooves 32 that can be fitted into the corresponding protrusions 31.

[0026] The friction plate 3 is a wear part. By setting the protrusion 31 to be embedded in the groove 32, the friction plate 3 can be prevented from sliding relative to the gear 7 and the partition 101 in the circumferential direction. After each use, only a new friction plate 3 needs to be replaced. This reduces the cost of overall failure replacement while ensuring safety.

[0027] The system also includes a fall arrest mechanism 14, which comprises an inner ratchet 141 coaxial with shaft 8 and mounted on the side wall of the fixed box 1. A mounting bracket 142 corresponding to the inner side of the inner ratchet 141 is mounted on shaft 8. A pawl 143 is rotatably mounted on the mounting bracket 142, and one side of the pawl 143 is connected to the mounting bracket 142 via a tension spring 144. If friction fails and the user's falling speed reaches a certain value, the rotating pawl 143 will pull the spring 144 to generate centrifugal motion, locking the pawl 143 into the inner ratchet 141. This locks the rope drum 10 to stop rotating, thus securing the user and providing an extra layer of safety.

[0028] The free ends of rope 12 and rope 2 13 are connected. This prevents the user from forgetting to take rope 2 13 and being unable to descend, thus requiring them to climb back into the window and causing unnecessary trouble. The bottom of the fixed box 1 is provided with holes 121 and 131 for rope 12 and rope 13 to pass through. This prevents rope 12 and rope 13 from interfering with each other during descent, thus affecting the use of the device.

[0029] The inner edges of holes 121 and 131 are respectively provided with polytetrafluoroethylene pads 15 to protect and lubricate ropes 12 and 13. This reduces the friction between ropes 12 and 13 and holes 121 and 131, respectively, increases the service life of the ropes, and makes the descent process smoother.

[0030] The fixed box 1 is equipped with several lifting lugs 16 on its side for securing it. This makes fixing the device more convenient; simply drill holes in the load-bearing wall and use expansion bolts to fix the device.

[0031] The friction plate 3 is an elastic friction plate. Elastic friction plates are better able to adapt to periodic impacts, are more suitable for frequent start-stop cycles, and can also reduce vibration, with a more stable coefficient of friction.

[0032] In an emergency, the user puts on the safety belt, securely fastens rope 13 to the safety belt, and then, holding rope 1, climbs down from the window sill. Due to the user's weight, rope 13 is under stress, which is then transmitted to shaft 8, gear 9, gear 7, and threaded rod 6. Because threaded rod 6 engages with nut 5, gear 7 presses against friction plate 3, locking threaded rod 6. Thus, rope 131 can hold the user and prevent them from falling. When the user pulls rope 12 to rotate rope drum 4, nut 5 and threaded rod 6 loosen slightly, releasing friction plate 3. The threaded rod 6, under stress, begins to rotate. Since the downward trend is greater than the pulling trend, threaded rod 6 will re-tighten with nut 5, pressing against friction plate 3 and locking threaded rod 6. In this way, the user will fall a certain distance and be pulled back. By continuously pulling rope 12, the user will continue to fall. This device allows users to control their own falling speed, and they can fall simply by pulling rope 12 without having to throw the rope out of the window. It is simple to operate and easy to use. Rope 2 13 does not slip relative to the user, so there is no friction injury to the hand when holding it, making it safer.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An escape rope structure, comprising a fixed box (1), wherein the fixed box (1) is provided with a partition (101), characterized in that, A shaft (2) is connected and installed on the inner wall of the fixed box (1). A rope winding drum (4) is rotatably connected to the shaft (2) via a damping bearing (21). A nut (5) is coaxially connected to one side of the rope winding drum (4). A threaded rod (6) is rotatably connected to the fixed box (1) and threadedly connected to the nut (5). A gear (7) is connected and installed on the threaded rod (6). A pair of pressure-locked friction plates (3) are connected and installed between the gear (7) and the partition plate (101). A shaft 2 (8) is rotatably connected to the side wall. A gear 2 (9) that meshes with gear 1 (7) is connected to the shaft 2 (8). A rope winding drum 2 (10) is connected to the shaft 2 (8). The ratio of the diameter of the rope winding drum 1 (4) to the number of teeth of gear 1 (7) is greater than the ratio of the diameter of the rope winding drum 2 (10) to the number of teeth of gear 2 (9). Rope 1 (12) is wound on the rope winding drum 1 (4) in the same direction as the loosening of nut (5). Rope 2 (13) is wound on the rope winding drum 2 (10) in the opposite direction.

2. The escape rope structure according to claim 1, characterized in that, The friction plate (3) has several protrusions (31) on one side, and the gear (7) and the partition plate (101) have grooves (32) that can be fitted into the corresponding protrusions (31).

3. The escape rope structure according to claim 2, characterized in that, It also includes a fall protection mechanism (14), which includes an inner ratchet (141) coaxial with shaft two (8) and connected to the side wall of the fixed box (1). A mounting bracket (142) corresponding to the inner side of the inner ratchet (141) is connected and installed on shaft two (8). A pawl (143) is rotatably connected and installed on the mounting bracket (142). One side of the pawl (143) is connected and installed to the mounting bracket (142) through a tension spring (144).

4. The escape rope structure according to claim 3, characterized in that, The free ends of rope one (12) and rope two (13) are connected.

5. The escape rope structure according to claim 4, characterized in that, The bottom of the fixed box (1) is provided with holes 1 (121) and 2 (131) for rope 1 (12) and rope 2 (13) to pass through.

6. The escape rope structure according to claim 5, characterized in that, The inner edges of the first hole (121) and the second hole (131) are respectively provided with polytetrafluoroethylene pads (15) that can protect the first lubricating rope (12) and the second rope (13).

7. The escape rope structure according to claim 1, characterized in that, The side of the fixed box (1) is connected to several lifting lugs (16) for fixing the fixed box (1).

8. The escape rope structure according to claim 1, characterized in that, The friction plate (3) is an elastic friction plate.

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