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KR-102963096-B1 - A DESCENDING DIVICE THAT MAINTAINS THE ROPE'S DESCENDING SPEED EVEN WHEN USED REPEATEDLY

KR102963096B1KR 102963096 B1KR102963096 B1KR 102963096B1KR-102963096-B1

Abstract

The present invention relates to a rescue device used in emergencies such as building fires, etc., wherein A base plate (10) is provided to axially connect a rope wheel (20) and a pad wheel (30) to the upper part of the rope wheel (20), respectively, such that a rope gear (20a) formed integrally with the rope wheel (20) and a pad gear (30a) formed integrally with the pad wheel (30) mesh with each other, and a deceleration pad (32) is accommodated in the partition space (30c) of the pad receiving plate (30b) of the pad wheel (30), and a pad cover (34) is attached so that the deceleration pad (32) is restrained within the partition space (30c). A guide roller (40) is formed at the lower part of the rope wheel (20) to ensure smooth alternating downward movement between one end and the other end of the rope (R) that is caught on the pulley (20b) of the rope wheel (20). On the lower side of the rope wheel (20), support gears (50) that mesh with the rope gear (20a) are configured on the left and right sides, respectively, thereby reducing the bias applied to the pulley (20b) of the rope wheel (20) when the rope (R) descends, so that the gear meshing between the rope gear (20a) and the pad gear (30a) located above it is preserved, so that the descending speed of the rope (R) is maintained even during repeated descending operations.

Inventors

  • 정수현

Assignees

  • (주)한국소방기구제작소

Dates

Publication Date
20260511
Application Date
20240820

Claims (3)

  1. In the case of a rescue device used in emergencies such as a building fire, A base plate (10) is provided to axially connect a rope wheel (20) and a pad wheel (30) to the upper part of the rope wheel (20), respectively, such that a rope gear (20a) formed integrally with the rope wheel (20) and a pad gear (30a) formed integrally with the pad wheel (30) mesh with each other, and a deceleration pad (32) is accommodated in the partition space (30c) of the pad receiving plate (30b) of the pad wheel (30), and a pad cover (34) is attached so that the deceleration pad (32) is restrained within the partition space (30c). A guide roller (40) is formed at the lower part of the rope wheel (20) to ensure smooth alternating downward movement between one end and the other end of the rope (R) that is caught on the pulley (20b) of the rope wheel (20). Support gears (50) are configured on the left and right sides of the lower side of the rope gear (20a) of the rope wheel (20), which mesh with the rope gear (20a) and apply a supporting force to the rope gear (20a), thereby reducing the bias applied to the pulley (20b) of the rope wheel (20) when the rope (R) descends, so that the gear meshing between the rope gear (20a) and the pad gear (30a) located above it is preserved, thereby maintaining the descending speed of the rope even with repeated use. The shaft pin (51) connecting the left and right support gears (50) and the shaft pin (21) connecting the rope wheel (20) are fixedly connected by a single shaft support plate (60), thereby preventing the shafts of the rope wheel (20) and the two left and right support gears (50) from spreading apart, so that the meshed state between the rope gear (20a) and the support gear (50) is fully maintained and at the same time, the phenomenon of twisting between them is prevented. The outer edge (32a) of the deceleration pad (32) and the inner wall (34a) of the pad cover (34), which are confined within the partition space (30c) of the pad receiving plate (30b), are formed parallel to the rotation axis of the pad wheel (30), that is, the rotation axis of the shaft pin (31), when viewed from the side, so that when the rope (R) descends, the pad wheel (30) engaged with the rope wheel (20) also rotates, the deceleration pad (32) is pushed outward by centrifugal force, and when the outer edge (32a) comes into contact with the inner wall (34a) of the pad cover (34) and frictional force is applied, the contact surface between the outer edge (32a) of the deceleration pad (32) and the inner wall (34a) of the pad cover (34) makes equal contact in a direction perpendicular to the rotation axis, thereby preventing eccentric wear and maintaining the descending speed of the rope even with repeated use.
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Description

A descending divice that maintains the rope's descending speed even when used repeatedly The present invention relates to a descent device, and more specifically, to a descent device that prevents the phenomenon of rope descent speed deceleration due to repeated use, thereby enabling the rope's descent speed to be maintained even during repeated use. A descent device is an evacuation apparatus installed near external access points, such as windows or balconies, in high-rise buildings like office buildings or apartments during fires or emergencies when it is difficult to use evacuation facilities like stairs or elevators. It allows evacuees to evacuate via a descending rope using their own weight. According to Korean Registered Patent No. 10-1855487 “Descent Device” as a prior art for a descent device, as shown in FIG. 1, it is composed of an inner ring portion (6) rotatably disposed on a first branch shaft (4) on a base member (2), a driving gear (7) integrally formed with the inner ring portion (6), a driven gear (8) that meshes with the driving gear (7) and rotates according to the lifting and lowering of a rope attached to the inner ring portion (6), a reduction wheel (not shown) integrally formed with the driven gear (8), a plurality of reduction members (not shown) disposed on the reduction wheel, and a reduction cover (9) covering the upper part of the reduction wheel. Additionally, rollers (10, 11, 12) are installed at the lower end of the driving gear (7) to prevent twisting of the rope (R) and to safely lift it. As described above, the rescue device used so far operates by fixing a person requiring rescue to one end of the rope and lowering the other end of the rope. When the one end of the rope is lowered, the load of the person requiring rescue is transmitted to the rope wheel in an irregular direction. This is because the drive gear (7), reduction wheel (not shown), and rollers (10, 11, 12) are axially coupled to one side of the base member (2), and since there is no separate member facing the one side of the base member (2), when a load is applied to the rope, the force is transmitted entirely to the drive gear (7), and accordingly, the rotation axis of the drive gear (7) cannot maintain its original state relative to the base member (2) and sags downward. In this case, twisting occurs between the drive gear (7) and the driven gear (8), causing the drive gear (7) to rotate eccentrically in a direction away from the driven gear (8). As a result, the drive gear (7) and the driven gear (8) suffer physical damage, making it impossible to maintain durability for a long time. Furthermore, due to excessive frictional contact between the drive gear (7) and the driven gear (8), the rope's descent speed gradually slows down or, in severe cases, stops due to repeated descent, causing difficulties in rescue operations. FIG. 1 is a configuration diagram of a descent device according to the prior art, FIG. 2 (Fig. 2a and Fig. 2b) is a perspective view of the descent device of the present invention. FIG. 3 is a front view of the main parts of the descent device of the present invention. FIG. 4 is a side view of the main part of the descent device of the present invention. Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Referring to FIGS. 2 to 4 together, the descent device (2) according to an embodiment of the present invention is equipped with a base plate (10). A rope wheel (20) is axially connected to the base plate (10) via an axle pin (21), and a pad wheel (30) is axially connected to the upper part of the rope wheel (20) via an axle pin (31). At this time, the rope gear (20a) formed integrally with the rope wheel (20) and the pad gear (30a) formed integrally with the pad wheel (30) mesh with each other. A rope gear (20a) is integrally formed on one side of the rope wheel (20), and a pulley (20b) is integrally formed on the opposite side. A rope (R) is attached to the pulley (20b). With this configuration, when a load is applied to one of the two ends of the rope (R) and it descends, the rope wheel (20) and the rope gear (20a) rotate simultaneously, and the pad wheel (30) engaged with the rope gear (20a) also rotates. A pad gear (30a) is integrally formed on one side of the pad wheel (30), and a pad receiving plate (30b) is integrally formed on the opposite side. A partitioned space (30c) is provided in the pad receiving plate (30b), and a deceleration pad (32) is received in each partitioned space (30c). When the deceleration pad (32) is received, a pad cover (34) is attached to restrain the received deceleration pad (32) so that it does not detach from the partitioned space (30c). A guide roller (40) is formed at the bottom of the rope wheel (20) to ensure smooth alternating downward movement between the two ends of the rope (R) that are caught on the pulley (20b) of the rope wheel (20). In particular, in the present inventio