Anti-falling and slow-descending device in suspended state

Abstract

The invention relates to an anti-falling and slow-descending device in a suspended state, which comprises an anti-falling device shell, a ratchet wheel is rotatably arranged in the anti-falling device shell through a rotating shaft, a movable block is mounted at the other end of the rotating shaft, and the movable block is movably mounted on the anti-falling device shell. A first spring is arranged between the bottom of the movable block and the falling protector shell, a steel wire traction rope is wound around the outer portion of the ratchet wheel, one end of the steel wire traction rope penetrates through the bottom of the falling protector shell and is fixedly provided with a fixing piece, and the fixing piece is used for being hung to a safety rope. A double-stop key is installed in the falling protector shell, the ratchet wheel is locked with the ratchet wheel in a clamped mode through the double-stop key after falling, and therefore the falling protector can be stopped in time in emergency situations such as high-altitude falling, and the life safety of high-altitude operation personnel is guaranteed.

Description

Technical Field

[0001] The invention relates to a falling prevention and slow-descent device in a suspended state, belonging to the technical field of falling arresters. Background Art

[0002] The main function of the fall prevention device is to prevent workers from accidentally falling when working at height. It usually includes multiple components such as safety belts, connecting ropes, anchor points, retainers and rescue systems.

[0003] Chinese patent CN117509497A discloses a method for preventing a high-altitude worker from falling on a lifting platform, using a lifting platform anti-fall device, the lifting platform anti-fall device comprises an anti-fall device shell, an anti-fall device limiting mechanism is arranged on the outside of the anti-fall device shell, a steel belt is arranged on the inside of the anti-fall device shell, a ratchet is arranged on the outer surface of the steel belt, a ratchet is arranged on the outer side of the ratchet, a steel wire traction rope is connected to the inside of the steel belt, a limiting spring is arranged on the steel wire traction rope, an auxiliary connecting mechanism is arranged on the upper end outer surface of the anti-fall device shell, a No. 1 connecting ring is arranged in the middle of the upper end of the anti-fall device shell, an upper traction rope is connected to the No. 1 connecting ring, a buffer pad is arranged on the lower end outer surface of the anti-fall device shell, and the ends of the steel wire traction rope and the upper traction rope are connected with anti-drop hanging rings. The present invention can facilitate high-altitude workers to limit and fix the position of the anti-fall device, and can limit and fix the position of the safety buckle, and can also assist in fixing the anti-fall device, thereby improving the safety of the use of the anti-fall device.

[0004] However, although the above device can lock the safety buckle and improve the safety of the fall arrester, the device cannot stop in time when encountering an emergency such as falling from a height, and cannot ensure the life safety of the height workers, which is inconvenient for users to use. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a fall prevention and descent control device in a suspended state, which can stop the fall in time when encountering emergencies such as falling from a height, thereby ensuring the life safety of high-altitude workers.

[0006] The technical solution of the present invention is as follows:

[0007] A fall prevention and slow-descent device in a suspended state comprises a fall arrester shell, a ratchet is arranged inside the fall arrester shell through rotation of a rotating shaft, a movable block is installed at the other end of the rotating shaft, the movable block is movably installed on the fall arrester shell, and a first spring is arranged between the bottom of the movable block and the fall arrester shell, a steel wire traction rope is wound around the outside of the ratchet, one end of the steel wire traction rope passes through the bottom of the fall arrester shell and is fixed with a fixing piece, and the fixing piece is used to hang on a safety rope; a double stop key is installed inside the fall arrester shell, and the ratchet is locked with the ratchet by the double stop key after falling.

[0008] Among them, a mounting tube is fixedly arranged inside the fall arrester shell, a threaded rod is movably arranged inside the mounting tube, one end of the threaded rod movably passes through the bottom of the fall arrester shell and extends to the outside of the fall arrester shell, one end of the threaded rod outside the fall arrester shell is connected to a motor, and the threaded rod inside the fall arrester shell is threadedly connected to a threaded sleeve on the outside, a pawl is fixedly arranged on the top of the threaded sleeve, and the pawl is locked with the ratchet.

[0009] Wherein, the fixing part comprises a hanging ring, and a safety buckle is movably provided at the end of the hanging ring, and the safety buckle is opened and closed with the hanging ring through a connecting component.

[0010] Wherein, the connecting component includes a rotating plate movably arranged on the surface of the safety buckle, an empty slot is arranged inside the rotating plate, a pull rod is movably arranged in the empty slot, one end of the pull rod passes through the empty slot and is provided with an insertion block, a slot block is arranged on the surface of the hanging ring, a slot is arranged on the side of the slot block facing the empty slot, a second spring is sleeved on the outside of the pull rod, one end of the second spring is fixed to the surface of the pull rod, and the other end of the second spring is fixed to the side of the empty slot away from the slot block; the insertion block matches the slot of the slot block.

[0011] Wherein, auxiliary connecting blocks are fixedly arranged on both sides of the fall arrester housing, and a connecting frame is fixedly arranged on the side of the auxiliary connecting block away from the fall arrester housing.

[0012] Wherein, a connecting ring is fixedly provided on the top of the fall arrester shell, a traction block is fixedly provided on the top of the connecting ring, and an upper traction rope is fixedly provided on the top of the traction block.

[0013] Among them, side connecting rings are fixedly arranged on the top of the fall arrester shell and on both sides of the connecting ring, and an auxiliary ring is also arranged on the top of the traction block, and the upper traction rope is passed through the auxiliary ring; the side connecting ring is fixedly connected to the auxiliary ring through a connecting wire rope, and an auxiliary connecting rope is fixedly arranged on the top of the auxiliary ring.

[0014] Wherein, the rotating plate is L-shaped.

[0015] Wherein, the other end of the pull rod passes through an empty slot and is provided with a pull ring.

[0016] The present invention has the following beneficial effects:

[0017] The device is provided with double stop keys, threaded rods, threaded sleeves and pawls. When a high-altitude operator falls accidentally, the pulling speed of the wire traction rope is significantly accelerated, and the ratchet is offset and locked with the double stop keys to stop the ratchet from rotating, thereby achieving the first level of safety protection. After that, the motor is started to make its output shaft drive the threaded rod to rotate, and then the threaded sleeve drives the pawl to perform vertical lifting movement along the outside of the threaded rod, so that the pawl clamps the ratchet, thereby achieving the second level of safety protection. The device thus achieves multiple protections in terms of anti-falling, achieves better anti-falling effect, is safe and reliable, reduces the safety hazards of high-altitude operators working at high altitudes, provides safety guarantees for high-altitude operations, and effectively protects the lives of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a front view structural schematic diagram of the present invention;

[0020] Figure 3 It is a schematic diagram of the hanging ring structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the enlarged structure of the A part of the present invention;

[0022] Figure 5 It is a cross-sectional view of the housing of the fall arrester of the present invention.

[0023] The reference numerals in the figure are as follows:

[0024] 1. Fall arrester housing; 101. Auxiliary connecting block; 102. Connecting frame; 103. Movable block; 104. First spring; 2. Ratchet; 201. Wire traction rope; 3. Fixing piece; 301. Hanging ring; 302. Safety buckle; 4. Turn plate; 401. Pull rod; 402. Second spring; 403. Pull ring; 404. Insert block; 405. Slot block; 5. Double stop key; 6. Mounting cylinder; 601. Threaded rod; 602. Motor; 603. Threaded sleeve; 604. Ratchet; 7. Connecting ring; 701. Towing block; 702. Upper traction rope; 8. Side connecting ring; 801. Connecting wire rope; 802. Auxiliary ring; 803. Auxiliary connecting rope. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] See also Figures 1 to 5 , the invention provides a technical solution:

[0027] A fall prevention and slow-descent device in a suspended state comprises a fall arrester housing 1, wherein a ratchet 2 is arranged inside the fall arrester housing 1 through a rotating shaft, a movable block 103 is installed at the other end of the rotating shaft, the movable block 103 is slidably installed on the fall arrester housing 1, and a first spring 104 is arranged between the bottom of the movable block 103 and the fall arrester housing 1, specifically, a telescopic rod is arranged at the bottom of the movable block 103, the bottom of the telescopic rod is fixed on the fall arrester housing 1, and the first spring 104 is sleeved on the outside of the telescopic rod, and the bottom of the first spring 104 is fixedly connected to the fall arrester housing 1, and the top of the first spring 104 is fixedly connected to the bottom of the movable block 103, a steel wire traction rope 201 is wound around the outside of the ratchet 2, one end of the steel wire traction rope 201 passes through the bottom of the fall arrester housing 1 and is fixedly arranged with a fixing member 3, the fixing member 3 is used to be hung on a safety rope, a double stop key 5 is installed inside the fall arrester housing 1, and the ratchet 2 is locked with the ratchet 2 through the double stop key 5 after falling.

[0028] Specifically, after the fixing member 3 is used to hang the safety rope of the personnel, the personnel move and other operations slowly pull the wire traction rope 201. Since the wire traction rope 201 is pulled slowly, the downward pressure of the wire traction rope 201 around the ratchet 2 is also small. At this time, the ratchet 2 will not contact the ratchet 2 under the support force of the first spring 104. When the high-altitude operator falls accidentally, the pulling speed of the wire traction rope 201 is significantly accelerated, and the ratchet 2 deviates and locks with the double stop key 5 to stop the ratchet 2 from rotating, so that the first level of safety protection can be achieved.

[0029] A mounting tube 6 is fixedly arranged inside the fall arrester housing 1, and a threaded rod 601 is movably arranged inside the mounting tube 6. One end of the threaded rod 601 passes through the bottom of the fall arrester housing 1 and extends to the outside of the fall arrester housing 1. The threaded rod 601 is rotatably connected to the bottom of the fall arrester housing 1. One end of the threaded rod 601 located outside the fall arrester housing 1 is connected to a motor 602. The threaded rod 601 located inside the fall arrester housing 1 is externally threadedly connected to a threaded sleeve 603. The threaded sleeve 603 is slidably installed in the mounting tube 6. A pawl 604 is fixedly arranged on the top of the threaded sleeve 603, and the pawl 604 is locked with the ratchet 2.

[0030] In this embodiment, by setting a threaded rod 601 and a threaded sleeve 603, the motor 602 is started to make its output shaft drive the threaded rod 601 to rotate, and then the threaded sleeve 603 drives the pawl 604 to perform vertical lifting movement along the outside of the threaded rod 601, so that the pawl 604 clamps the ratchet 2 to achieve the second level of safety protection, so that the device can achieve multiple protections in anti-falling, achieve better anti-falling effect, be safe and reliable, reduce the safety hazards of high-altitude workers working at high altitudes, provide safety guarantees for high-altitude operations, and effectively protect the lives of workers.

[0031] By setting the threaded rod 601 and the threaded sleeve 603, the motor 602 is started so that its output shaft drives the threaded rod 601 to rotate, and then the threaded sleeve 603 drives the pawl 604 to perform vertical lifting movement along the outside of the threaded rod 601, so that the pawl 604 clamps the ratchet 2 to achieve the second level of safety protection, so that the device can achieve multiple protections in anti-falling and achieve better anti-falling effect.

[0032] The fixing member 3 includes a hanging ring 301, and a safety buckle 302 is movably provided at the end of the hanging ring 301, and the safety buckle 302 is opened and closed with the hanging ring 301 through a connecting component; the connecting component includes a rotating plate 4 movably arranged on the surface of the safety buckle 302, the rotating plate 4 is L-shaped, and an empty slot is arranged inside the rotating plate 4, and a pull rod 401 is movably arranged in the empty slot, one end of the pull rod 401 passes through the empty slot and is provided with an insertion block 404, and the other end of the pull rod 401 passes through the empty slot and is provided with a pull ring 403, a slot block 405 is arranged on the surface of the hanging ring 301, and a slot is arranged on the side of the slot block 405 facing the empty slot, and a second spring 402 is sleeved on the outside of the pull rod 401, one end of the second spring 402 is fixed to the surface of the pull rod 401, and the other end of the second spring 402 is fixed to the side of the empty slot away from the slot block 405; the insertion block 404 matches the slot of the slot block 405.

[0033] Specifically, first pull the pull ring 403 to retract the plug block 404 toward one side of the pull ring 403, rotate the L-shaped rotating plate 4 to make the plug block 404 correspond to the slot, and then release the pull ring 403 to insert the plug block 404 into the slot of the slot block 405, so that the safety buckle 302 and the hanging ring 301 can be locked, thereby improving the safety of high-altitude operations.

[0034] Auxiliary connecting blocks 101 are fixedly provided on both sides of the fall arrester housing 1, and a connecting frame 102 is fixedly provided on the side of the auxiliary connecting block 101 away from the fall arrester housing 1; by setting the auxiliary connecting block 101 and the connecting frame 102, the staff can install the fall arrester on the guardrail of the lifting platform through the auxiliary connecting block 101 and the connecting frame 102, which is convenient for high-altitude operations.

[0035] A connecting ring 7 is fixedly provided on the top of the fall arrester housing 1, a traction block 701 is fixedly provided on the top of the connecting ring 7, an upper traction rope 702 is fixedly provided on the top of the traction block 701, side connecting rings 8 are fixedly provided on the top of the fall arrester housing 1 and on both sides of the connecting ring 7, an auxiliary ring 802 is also provided on the top of the traction block 701, and the upper traction rope 702 passes through the auxiliary ring 802; the side connecting ring 8 is fixedly connected to the auxiliary ring 802 by connecting the steel wire rope 801, and an auxiliary connecting rope 803 is fixedly provided on the top of the auxiliary ring 802.

[0036] In this embodiment, by setting a connecting ring 7, a traction block 701, an upper traction rope 702, a side connecting ring 8, a connecting wire rope 801, an auxiliary ring 802 and an auxiliary connecting rope 803, the upper traction rope 702 is used to connect the anti-fall device to the fixed ring of the lifting platform, and the auxiliary connecting rope 803 can assist in fixing the anti-fall device to prevent the upper traction rope 702 from accidentally breaking and causing the high-altitude workers to fall.

[0037] The working principle of the above is as follows:

[0038] When in use, firstly, the anti-fall device can be installed on the guardrail of the lifting platform through the auxiliary connecting block 101 and the connecting frame 102, the upper traction rope 702 is used to connect the anti-fall device to the lifting platform fixing ring, and the auxiliary connecting rope 803 can assist in fixing the anti-fall device to prevent the upper traction rope 702 from accidentally breaking and causing the high-altitude workers to fall. Then, by pressing the safety buckle 302, the hanging ring 301 is hung on its own safety rope, and then by rotating the rotating plate 4, the pull ring 403 is released, so that the second spring 402 is stretched, and then the plug block 404 is inserted into the slot of the slot block 405, the safety buckle 302 and the hanging ring 301 can be locked. When the high-altitude workers fall accidentally When falling, the pulling speed of the wire traction rope 201 is significantly accelerated, and the ratchet 2 is offset downward and locked with the double stop key 5 to stop the ratchet 2 from rotating, thereby realizing the first level of safety protection. After that, the motor 602 is started to make its output shaft drive the threaded rod 601 to rotate, and then the threaded sleeve 603 drives the pawl 604 to perform vertical lifting movement along the outside of the threaded rod 601, so that the pawl 604 clamps the ratchet 2, realizing the second level of safety protection, so that the device can achieve multiple protections in anti-falling, achieve better anti-falling effect, be safe and reliable, reduce the safety hazards of high-altitude workers in high-altitude operations, provide safety guarantees for high-altitude operations, and effectively protect the lives of workers.

[0039] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fall prevention and descent control device in a suspended state, comprising a fall prevention device housing (1), characterized in that: A ratchet (2) is rotatably arranged inside the fall arrester housing (1) via a rotating shaft, a movable block (103) is installed at the other end of the rotating shaft, the movable block (103) is slidably installed on the fall arrester housing (1), and a first spring (104) is arranged between the bottom of the movable block (103) and the fall arrester housing (1), a steel wire traction rope (201) is wound around the outside of the ratchet (2), one end of the steel wire traction rope (201) passes through the bottom of the fall arrester housing (1) and is fixedly arranged with a fixing member (3), the fixing member (3) is used to be hung on a safety rope; a double stop key (5) is installed inside the fall arrester housing (1), and the ratchet (2) is locked with the ratchet (2) through the double stop key (5) after falling.

2. The anti-falling and slow-descent device in a suspended state as claimed in claim 1, characterized in that: A mounting tube (6) is fixedly arranged inside the fall arrester housing (1), a threaded rod (601) is movably arranged inside the mounting tube (6), one end of the threaded rod (601) movably passes through the bottom of the fall arrester housing (1) and extends to the outside of the fall arrester housing (1), one end of the threaded rod (601) located outside the fall arrester housing (1) is connected to a motor (602), the threaded rod (601) located inside the fall arrester housing (1) is externally threadedly connected to a threaded sleeve (603), a ratchet (604) is fixedly arranged on the top of the threaded sleeve (603), and the ratchet (604) is locked with the ratchet wheel (2).

3. The anti-falling and slow-descent device in a suspended state as claimed in claim 2, characterized in that: The fixing member (3) comprises a hanging ring (301), the end of the hanging ring (301) is movably provided with a safety buckle (302), and the safety buckle (302) is opened and closed with the hanging ring (301) through a connecting assembly.

4. The anti-falling and slow-descent device in a suspended state as claimed in claim 3, characterized in that: The connecting component comprises a rotating plate (4) movably arranged on the surface of the safety buckle (302), an empty slot being arranged inside the rotating plate (4), a pull rod (401) being movably arranged in the empty slot, one end of the pull rod (401) passing through the empty slot and being provided with an insert block (404), a slot block (405) being arranged on the surface of the hanging ring (301), a slot being arranged on the side of the slot block (405) facing the empty slot, a second spring (402) being sleeved on the outside of the pull rod (401), one end of the second spring (402) being fixed to the surface of the pull rod (401), and the other end of the second spring (402) being fixed to a side of the empty slot away from the slot block (405); the insert block (404) matches the slot of the slot block (405).

5. The anti-falling and slow-descent device in a suspended state as claimed in claim 1, characterized in that: Auxiliary connection blocks (101) are fixedly provided on both sides of the fall arrester housing (1), and a connection frame (102) is fixedly provided on the side of the auxiliary connection block (101) away from the fall arrester housing (1).

6. The anti-falling and slow-descent device in a suspended state according to claim 1, characterized in that: A connecting ring (7) is fixedly provided on the top of the fall arrester housing (1), a traction block (701) is fixedly provided on the top of the connecting ring (7), and an upper traction rope (702) is fixedly provided on the top of the traction block (701).

7. The anti-falling and slow-descent device in a suspended state as claimed in claim 6, characterized in that: Side connecting rings (8) are fixedly arranged on the top of the fall arrester housing (1) and on both sides of the connecting ring (7); an auxiliary ring (802) is also arranged on the top of the traction block (701); the upper traction rope (702) passes through the auxiliary ring (802); the side connecting ring (8) is fixedly connected to the auxiliary ring (802) by connecting the steel wire rope (801); and an auxiliary connecting rope (803) is fixedly arranged on the top of the auxiliary ring (802).

8. The anti-falling and slow-descent device in a suspended state as claimed in claim 4, characterized in that: The rotating plate (4) is L-shaped.

9. The anti-falling and slow-descent device in a suspended state as claimed in claim 4, characterized in that: The other end of the pull rod (401) passes through a hollow slot and is provided with a pull ring (403).

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