Climbing device attached to unpowered escape fire-fighting chain ladder in fire-fighting engineering

Abstract

A climbing device attached to an unpowered escape fire-fighting chain ladder in fire-fighting engineering comprises a plurality of climbing chain pairs and an adjusting mechanism, and the climbing chain pairs are fixedly arranged on the two sides of a side convex pin shaft of the fire-fighting chain ladder respectively; the climbing chain pair comprises a grabbing and treading chain body formed by a plurality of climbing sections which are connected end to end, one end of the grabbing and treading chain body is pivotally connected with a handle section, the other end of the handle section is connected with a section retaining ring through a flexible chain belt, and the adjusting mechanism is arranged on the handle section and used for adjusting the length of the attaching mechanism so as to change the posture of a human body supported on the handle section; the adjusting mechanism comprises a winding shell and a winding shaft fixedly arranged in the winding shell, a winding roller is rotationally arranged outside the winding shaft, and a ratchet wheel structure is arranged between the winding roller and the winding shaft. Therefore, the device is simple and practical.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting equipment technology, specifically to a climbing device for fire-fighting engineering attached to a non-powered escape fire ladder. Background Technology

[0002] Existing fire escape ladders have four main drawbacks: 1) They are soft chain ladders, without any climbing chains, making it difficult to move from windows or balconies; 2) Climbing onto a fire escape ladder requires strength, so it is uncertain for women or children; 3) Fire escape ladders are swaying and curved.

[0003] Dongguan Wanfang Fire Equipment Co., Ltd. disclosed a chain-type high-rise fire escape device (Publication No.: CN104043207A, Publication Date: 2014.09.17). The load-bearing chain 1 is suspended in front of the building. Multiple constant speed devices 26 are meshed and fixed on the load-bearing chain 1. A safety belt 8 is installed below the constant speed device 26. A three-stage transmission gear is installed between the bottom plate (13) and the top cover plate (24) of the constant speed device. The first stage combined gear 25 meshes with the load-bearing chain 1. The upper end of the shaft of the second stage combined gear 19 is fitted with a clamp swing body assembly 18. The third stage gear 14 is fastened to the first stage. Below the secondary gear 19, the escape wheel 12 is fastened above the third-stage gear 14. When the human body fixed on the safety belt (8) descends, it drives the first-stage combination gear (25) to roll on the load-bearing chain, causing the gear train to rotate at a faster speed. The third-stage gear (14) rotates at high speed, and the wheel cam of the escape wheel (12) impacts and rubs against the two rollers (17) on the slip swing body assembly (18) in turn. The slip swing body assembly (18) swings to control the speed of the escape wheel, thereby controlling the speed of the third-stage gear (14) and achieving the purpose of controlling the speed of the descending human body. The third-stage gear 14 and the slip swing body assembly 18 constitute the speed control component. The speed control component does not jam, is not easy to wear, and generates little heat. The above describes the deceleration of the constant speed device 26 when the chain is stationary. The speed control component with three sets of meshing gears solves the problem of the constant speed device 26 slowly descending due to the load when the load-bearing chain is stationary. This problem can be easily solved by the circulating chain causing the load-bearing chain to descend slowly.

[0004] Therefore, there is an urgent need in this field for a climbing device that can be attached to a non-powered escape fire ladder in fire engineering, to assist people in transferring from windows and balconies. This device should not require force to climb and should be easy to operate. The ladder should also be designed to minimize swaying and bending to avoid affecting the climbing process. This has become a key problem that urgently needs to be solved in the field of high-rise building escape. Summary of the Invention

[0005] To address the shortcomings of the existing technology, the present invention aims to provide a climbing device attached to a non-powered escape fire ladder in fire engineering. This application solves at least one of the following technical problems: ① assisting escapees in transferring from windows and balconies; ② requiring no effort to climb, making operation simple; ③ the swinging and bending of the ladder does not affect climbing. This makes rapid escape easier in emergency situations.

[0006] The objective of this invention is achieved by providing a climbing device for fire-fighting engineering, attached to a non-powered escape fire ladder, comprising:

[0007] Climbing chain pairs, multiple climbing chain pairs are respectively fixed on both sides of the side protruding pin shaft of the fire ladder, used to support the hands and feet of the human body to support the weight of the human body at least two points; the climbing chain pair includes multiple climbing sections connected end to end to form a gripping chain body, one end of the gripping chain body is pivotally connected to the handle section, and the other end of the handle section is connected to the link buckle through a flexible chain belt.

[0008] An adjustment mechanism, located on the handle segment, is used to adjust the length of the attachment mechanism to change the posture of the human body supported on it. The adjustment mechanism includes a winding housing and a winding shaft fixed therein. A winding roller is rotatably provided outside the winding shaft, and a ratchet structure is provided between the winding roller and the winding shaft.

[0009] One end of the gripping chain is fixed to and wound around the winding roller, and the other end is fixed to the chain hook.

[0010] Furthermore, the handle segment includes two chain plates and a chain shaft disposed between the chain plates. The chain shaft is equipped with an adjustment mechanism, and the adjustment mechanism is rotatably equipped with a gripping handle.

[0011] Furthermore, the climbing joint includes a foot ring and a flexible chain, with the upper part of the foot ring pivotally connected to the flexible chain via a flexible buckle.

[0012] Furthermore, it also includes: a secondary chain mechanism, which includes a secondary chain body, the secondary chain body being slidably inserted into the upper part of the climbing chain pair and connected end-to-end to the locking section, the locking section being locked and connected to the binding mechanism.

[0013] The binding mechanism is attached to the waist and hips of the body and can be optionally connected to a secondary chain mechanism to provide a third point of support for the body. The binding mechanism includes a first leg ring, a second leg ring, and a waist ring, with the waist ring connected between the first and second leg rings via a belly triangle.

[0014] Furthermore, it also includes a posture adjustment mechanism, one end of which is fixed to the belly triangle, and the other end is fixed to a chain clip, used to adjust the distance of the third point of support.

[0015] Furthermore, the attitude adjustment mechanism includes a winding roller, on which a storage long strip is wound. One end of the storage long strip is connected to a belly triangle, and the other end is connected to a locking section. One end of the winding roller is connected to a winding motor.

[0016] A climbing device attached to a non-powered escape fire chain ladder is provided. The climbing chain pair 10, together with the adjustment mechanism 20, enables two-point climbing; and with the binding mechanism 30 and the auxiliary chain mechanism 40, three-point climbing can be achieved. This device assists escapees in transferring from windows and balconies. Neither the two-point nor the three-point support requires any force to climb. The symmetrical arrangement of the climbing chain pair 10 ensures that climbing is not affected even if the chain ladder swings or bends, making it highly practical. Attached Figure Description

[0017] Figure 1 This is a side view of Embodiment 1 of the climbing device attached to a non-powered escape fire ladder according to the present invention;

[0018] Figure 2 This is a front view of an embodiment 1 of the present invention, which is a climbing device attached to a non-powered escape fire ladder in a fire protection engineering project.

[0019] Figure 3 This is a front sectional view of the handle segment of an embodiment 1 of the climbing device attached to a non-powered escape fire ladder according to the present invention.

[0020] Figure 4 This is Embodiment 1 of the present invention, which describes a climbing device attached to a non-powered escape fire ladder in a fire protection engineering project. Figure 3 Side sectional view;

[0021] Figure 5 This is a front view of embodiment 2 of the present invention, which describes a climbing device attached to a non-powered escape fire ladder in a fire protection engineering project.

[0022] Figure 6 This is a schematic diagram of the binding mechanism of Embodiment 2 of the climbing device attached to a non-powered escape fire ladder in fire protection engineering according to the present invention.

[0023] The reference numerals in the above figure:

[0024] 10. Climbing chain pair, 11. Climbing section, 12. Grip chain body, 13. Handle segment, 14. Link ring, 15. Foot ring, 16. Flexible chain, 17. Locking hook

[0025] 20 Adjustment mechanism, 21 Winding housing, 22 Winding shaft, 23 Winding roller, 24 Ratchet structure, 25 Grip handle

[0026] 30. Body binding mechanism; 31. First leg ring; 32. Second leg ring; 33. Waist ring; 34. Belly triangle.

[0027] 40. Secondary chain mechanism; 41. Secondary chain body; 42. Locking section

[0028] 60 Damping mechanism, 61 Sun gear, 62 Planetary gear, 63 Internal gear ring, 64 Planetary carrier, 65 Lever plate, 66 Ring, 67 First roller, 68 Damping chain, 69 Pivot Detailed Implementation

[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but are not intended to limit the scope of the present invention.

[0030] Example 1

[0031] A climbing device for fire protection engineering attached to a non-powered escape fire ladder, comprising:

[0032] Climbing chain pairs 10, multiple climbing chain pairs 10 are respectively fixed on both sides of the side protruding pin shaft of the fire ladder, used to support the hands and feet of the human body to support the weight of the human body at least two points.

[0033] Adjustment mechanism 20, located on the climbing chain pair 10, is used to adjust the length of the climbing chain pair 10 to change the posture of the human body supported on it.

[0034] The climbing chain pair 10 includes a gripping chain body 12. One end of the gripping chain body 12 is pivotally connected to a handle segment 13. The other end of the handle segment 13 is pivotally connected to a link ring 14 via a flexible chain belt 16. The link ring 14 is rotatably sleeved on both sides of the side protruding pin shaft of the fire ladder, thereby making the climbing chain pair 10 closer to the fire ladder and reducing its swing amplitude.

[0035] The grab chain 12 includes multiple climbing sections 11 connected end-to-end. Each climbing section 11 includes foot rings 15 and flexible chain belts 16 that are pivotally connected end-to-end. The handle section 13 includes an adjustment mechanism 20, which has a unidirectional rotatable grip handle 25 to support the weight of the user. Rotating the grip handle 25 upwards adjusts the length of the grab chain ladder 12. The ends of the climbing chain pairs 10 are respectively hung taut on the side protruding pins of adjacent climbing chain pairs below, facilitating the sprocket drive of the fire ladder. The grip handle 25 is equipped with a switch for stopping and moving the fire ladder.

[0036] The adjustment mechanism 20 includes a winding housing 21 and a winding shaft 22 fixed therein. A winding roller 23 is rotatably provided on the outside of the winding shaft 22. A ratchet structure 24 is provided between the winding roller 23 and the winding shaft 22. The gripping handle 25 drives the winding roller 23 to rotate around the winding shaft in only one direction to wind the gripping chain 12, so as to shorten the distance between the link 14 of the climbing chain pair 10 and the adjustment mechanism 20. The ratchet mechanism 24 restricts the winding roller 23 to rotate in only one direction. The ratchet mechanism 24 locks the position between the winding roller 23 and the winding shaft 22.

[0037] The gripping handle 25 applies a winding torque M to the winding roller 23 via a damping mechanism 60. The damping mechanism 60 includes a sun gear 61, a planetary gear 62, and an internal gear ring 63. The sun gear 61 is fixedly connected to the winding shaft 22, and the gripping handle 25 is fixedly connected to both ends of the winding shaft 22. The internal gear ring 63 is fixedly disposed in the inner hole of the winding roller 23. The planetary gear 62 is fixedly connected to the winding housing 21 via a planetary carrier 64. With the winding housing 21 stationary, the gripping handle 25 applies a rotational torque M to the winding shaft 22, causing the winding shaft 22 to rotate. The sun gear 61, through the planetary gear 62, drives the internal gear ring 63 and the winding roller 23 to rotate in the opposite direction, thereby winding the flexible chain belt 16 onto the winding roller 23. One end of the flexible chain belt 16 is connected to the chain ladder via a snap ring 14, and the other end is fixedly connected to the winding roller and wound onto the winding roller 23. Guide wheels 26 are provided on both sides of the vertical diameter of the outer shell 21. The guide wheels 26 guide the flexible chain belt 16 into the adjustment mechanism 20 along the vertical diameter direction.

[0038] The damping mechanism 60 also includes a damping chain 68, one end of which is hinged to a lever 65, and the other end of which is hinged to a hanging ring 66. One end of the gripping chain 12 is fixedly connected to the hanging ring 66, and the other end is fixed to a chain hook 17. The center of the hanging ring 66 is also on the vertical diameter, so that the direction of the load-bearing weight is along the vertical diameter. The first roller 67 of the damping chain 68 is fixed on the winding housing 21 on the vertical diameter, enters the winding housing 21 from the guide wheel 26, and is guided by the first roller 67 to wind onto the winding roller 23. To enhance the damping effect, the lever 65 rotates around a pivot 69, which is fixed to the winding housing 21. The first distance L1 between the hinge axis of the lever 65 and the damping chain and the pivot 69 is less than the second distance L2 between the axis of the hanging ring 66 and the pivot 69. The damping chain 68 provides a damping effect during winding, while preventing the flexible chain 16 from loosening or unwinding in the opposite direction on the winding roller 23.

[0039] like Figure 3 As shown, when adjusting the length, since the climbing chains 10 are a pair, both hands grip the upper grip handles 25, and both feet step on the foot rings 15 of the corresponding climbing chain body. The center of gravity is placed on the climbing chain body that is not being adjusted. The grip handle 25 of the climbing chain body to be adjusted is rotated counterclockwise (pushing the handle upwards). The grip handle 25 applies a rotational torque M to the winding shaft 22. Through the conversion of the damping mechanism 60, the winding roller 23 rotates clockwise, thereby winding the flexible chain onto the winding roller 23 and shortening the length of the handle segment 13. Due to the action of the ratchet mechanism, the grip handle 25 can rotate back to the original angle after rotating a certain angle, and then continue another cycle of rotation adjustment. Because the center of gravity is shifted to the other climbing chain body, there is no suspicion that it cannot raise its own height.

[0040] Firefighting chain ladders use roller chains. Single roller chains are preferred, but double roller chains with alternating intervals and fixed connections can also be selected.

[0041] Action Description: The escapee sits on the escape window, reaching out to grasp the two climbing chains 10 on either side of the fire escape ladder. The ladder stops descending due to the pulling force. The ends of the two climbing chains 10 are connected, and both hands grasp the handles 25 on one side of the climbing chain. Both feet are placed inside the foot rings 15 of the climbing chain 10. The escapee pushes their buttocks against the escape window, securing themselves to the fire escape ladder with two points of support. Because the two climbing chains 10 are connected at their ends, they act as a barrier between the escape chain and the ladder, preventing the escapee from swinging back and forth and allowing for a relatively stable hold. Pressing the switch resumes the ladder's descent, lowering the escapee to the ground. Once the escapee releases their feet from the foot rings 15 and releases their hands, the two climbing chains 10 begin to ascend in a continuous loop. Once you are firmly on your feet, rotate either hand upwards to grip the handle 25 to adjust the length of the climbing chain 10, so that the body is as straight as possible and suspended upright in front of the fire ladder.

[0042] Example 2

[0043] The addition of a secondary chain mechanism and a binding mechanism only describes the different features; other features are the same as in Example 1.

[0044] A climbing device for fire protection engineering attached to a non-powered escape fire ladder, also includes

[0045] Sub-chain mechanism 40 includes sub-chain body 41, which is slidably inserted on the upper part of any climbing chain pair 10 and is connected to the locking section 42 at both ends. The locking section 42 is locked to the binding mechanism 30.

[0046] The binding mechanism 30 is fastened to the waist and hips of the body and can be optionally connected to the secondary chain mechanism 40 to provide a third point of support for the body. The binding mechanism 30 includes a first leg ring 31, a second leg ring 32, and a waist ring 33. The waist ring 33 is connected between the first leg ring 31 and the second leg ring 32 via a belly triangle 34. The secondary chain mechanism 40 adjusts its length through the adjustment mechanism 20, thereby actively controlling the distance of the third point of support.

[0047] Alternatively, the secondary chain mechanism 40 can adjust its extra-height length through an attitude adjustment mechanism to actively control the distance of the third support point. It also includes an attitude adjustment mechanism, one end of which is fixed to the triangle 34, and the other end to the latch segment 42, used to adjust the distance of the third support point. The latch segment 42 of the secondary chain mechanism 40 is equipped with a ranging receiver, and the triangle 34 is fixed with a ranging transmitter. The ranging transmitter sends a signal to the ranging receiver to measure the distance L of the third support point from the latch segment 42 to the triangle 34. The attitude adjustment mechanism senses this distance L and automatically adjusts its stored length. The attitude adjustment mechanism includes a winding roller with a flexible chain wound on it. One end of the flexible chain is connected to the triangle 34, and the other end is connected to the latch segment 42. The winding roller is connected to a winding motor, which drives the winding roller to wind the flexible chain to adjust its length. The hip adjustment slider is located on the grip handle 25. Sliding the hip adjustment slider to the left shortens the output length of the storage belt; sliding it to the right lengthens the storage belt, making it easier to actively control the distance of the third point support.

[0048] Action Description: The escapee sits on the escape window, first connecting the secondary chain mechanism 40 to the binding mechanism 30, and then, as in Example 1, clings to the fire ladder. Pressing the hip adjustment button causes the posture adjustment mechanism to measure the third support distance L and automatically adjust its storage length based on this distance.

[0049] A climbing device for fire protection engineering, attached to a non-powered escape fire chain ladder, is disclosed. The climbing chain pair 10, together with the adjustment mechanism 20, enables two-point climbing; and with the binding mechanism 30 and the auxiliary chain mechanism 40, three-point climbing can be achieved, which can assist people in transferring from windows and balconies. Both two-point and three-point support do not require force to climb. The symmetrical arrangement of the climbing chain pair 10 means that even if the chain ladder swings or bends, it will not affect the climbing, which has great practical value.

Claims

1. A fire engineering attachment for a powered escape fire chain ladder, characterised in that, Comprising The climbing chain pair (10) is respectively fixed on both sides of the side protruding pin shaft of the fire escape ladder, used to support the hands and feet of the human body to support the body weight at least two points; the climbing chain pair (10) comprises a plurality of climbing links (11) connected in series to form a stepping chain body (12), one end of the stepping chain body (12) is pivotally connected to a handle segment (13), the other end of the handle segment (13) is connected to a link buckle ring (14) through a flexible chain belt (16); The adjusting mechanism (20) is arranged on the handle segment (13) and used to adjust the length of the climbing chain pair (10) to change the posture of the human body supported thereon; the adjusting mechanism (20) comprises a winding shell (21) and a winding shaft (22) fixedly arranged in the winding shell (21), the winding shaft (22) is rotatably arranged outside the winding shell (21) and provided with a winding roller (23), and a ratchet structure (24) is arranged between the winding roller (23) and the winding shaft (22); One end of the stepping chain body (12) is fixedly connected to the adjusting mechanism (20), and the other end is fixedly connected to a carabiner (17).

2. The fire protection engineering attachment for a climbing device for a passive escape fire hoist of claim 1, wherein, The handle segment (13) comprises two chain belt plates and a chain belt shaft arranged between the chain belt plates, the chain belt shaft is provided with the adjusting mechanism (20), and the adjusting mechanism (20) is unidirectionally rotatably provided with a gripping handle (25).

3. The fire protection engineering attachment for a climbing device for a passive escape fire evacuation stairway of claim 2, wherein, The climbing link (11) comprises a stepping ring (15) and a flexible chain belt (16), and the upper ring of the stepping ring (15) is pivotally connected to the flexible chain belt (16) through a flexible ring buckle.

4. A climbing device for attachment to a passive escape fire ladder according to any one of claims 1 to 3, wherein, Further comprising: The auxiliary chain mechanism (40) comprises an auxiliary chain body (41) which is slidably arranged on the upper part of the climbing chain pair (10) and integrally connected to a lock buckle segment (42) at the tail end, and the lock buckle segment (42) is lockingly connected to the body binding mechanism (30); The body binding mechanism (30) is bound to the waist and hip parts of the human body and can be selectively connected to the auxiliary chain mechanism (40), and is used to provide a third point support for the human body; the body binding mechanism (30) comprises a first leg ring (31), a second leg ring (32) and a waist ring (33), and the waist ring (33) is connected between the first leg ring (31) and the second leg ring (32) through a belly triangle (34).

5. The fire protection engineering attachment for a non-powered escape fire ladder of claim 2, wherein, Further comprising The gripping handle (25) applies a winding torque (M) to the winding roller (23) through the damping mechanism (60), and the top of the winding shell (21) is provided with a guide wheel (26) on both sides of the vertical diameter, which guides the flexible chain belt (16) to be wound on the winding roller (23).

6. The climbing device attached to the unpowered escape fire escape ladder of the fire engineering according to claim 5, wherein The damping mechanism (60) comprises a sun gear (61), a planetary gear (62) and an inner ring gear (63), the sun gear (61) The winding shaft (22) is fixedly connected to the winding shell (21), and the inner ring gear (63) is fixedly arranged in the inner hole of the winding roller (23), and the planetary gear (62) is fixedly connected to the winding shell (21) through a planet carrier (64).

7. The fire protection engineering attachment for a climbing device for a passive escape fire hoist of claim 5, wherein, The damping mechanism (60) further comprises a damping chain (68), the first roller (67) of the damping chain (68) is fixed on the upper part of the winding shell (21) directly below the guide wheel (26) in the vertical diameter, the last roller is hinged to the first angle of the lever piece (65), the third angle of the lever piece (65) is hinged to the hanging ring (66), the second angle of the lever piece (65) is hinged to the pivot (69), and one end of the grabbing chain body (12) is fixedly connected to the hanging ring (66) to realize the fixed connection of the adjusting mechanism (20).

8. The fire protection engineering attachment for a climbing device for a passive escape fire hoist of claim 7, wherein, The pivot (69) is fixed on the lower part of the winding shell (21) on the left side of the vertical diameter, and the first distance L1 between the hinged shaft of the first angle of the lever piece (65) and the pivot (69) is less than the second distance L2 between the shaft of the hanging ring (66) and the pivot (69).

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