CN-224229135-U - Personnel safety hanging belt self-control winding and unwinding anti-falling device

Abstract

The utility model discloses a self-control retraction anti-falling device for a personnel safety hanging belt, which comprises a shell, wherein the upper end of the shell is connected with a hanging hook through a shaft, a hanging belt wheel carrier disc is connected in the shell through a rotating shaft, a hanging belt is arranged in the middle of the hanging belt wheel carrier disc, a spiral spring component is arranged on one side of the hanging belt, a check mechanism is arranged on the other side of the hanging belt wheel carrier disc, the check mechanism comprises a drop stopping component, a check component is arranged on the shell on one side of the drop stopping component, and self-control unidirectional release, self-control retraction and safety anti-falling functions of the hanging belt are realized through the drop stopping component and the check component. The utility model adopts a pure mechanical design, does not need to operate a device body, can freely switch between two states of unidirectional release anti-falling and bidirectional retraction anti-falling, meets the use requirements in different scenes, improves the reliability of operation, is suitable for occasions needing to carry out safety anti-falling protection on personnel, such as a working boat for ships, high-altitude operation and the like, and ensures the personnel safety.

Inventors

• CHEN XI

Assignees

• 靖江市宇田海洋装备科技有限公司

Dates

Publication Date

20260512

Application Date

20250126

Claims (6)

1. 1. The self-control retraction anti-falling device for the personnel safety hanging belt comprises a shell (7) and is characterized in that the upper end of the shell (7) is connected with a hanging hook (6) through a shaft, the inside of the shell (7) is connected with a hanging belt wheel frame disc (4) through a rotating shaft (5), a hanging belt (1) is arranged in the middle of the hanging belt wheel frame disc (4), a volute spring component (2) is arranged on one side of the hanging belt wheel frame disc, a check mechanism (3) is arranged on the other side of the hanging belt wheel frame disc, the check mechanism (3) comprises a descent stopping component, a check component is arranged on the shell (7) on one side of the descent stopping component, the self-control unidirectional release, the self-control retraction and the safety anti-falling function of the hanging belt (1) are realized through the descent stopping component and the check component, the check component comprises a check ratchet wheel (38), a check pawl (37) arranged on one side of the check ratchet wheel (38), the front end of the check pawl (37) is in contact with a check ratchet wheel disc (31), the check ratchet wheel (38) comprises a ratchet wheel body (381), a plurality of top balls (383) are circumferentially arranged on one side of the ratchet wheel body (381), and a small ratchet wheel (382) is uniformly arranged on one side of the ratchet body.
2. 2. The self-controlled retraction and release anti-falling device of the personnel safety sling according to claim 1, wherein the anti-falling component comprises an anti-falling ratchet disc (32) and an anti-falling ratchet disc (31), a plurality of anti-falling shaft pins (33) penetrate through a fixing plate (35) and a shell (7) to be connected with the anti-falling ratchet disc (32), anti-falling pawls (36) are connected to the anti-falling ratchet disc (31) through pawl shafts, and pawl tension springs (39) are arranged between the two opposite anti-falling pawls (36).
3. 3. The personal safety harness self-control retraction anti-falling device according to claim 2, wherein the hole connected with the anti-falling shaft pin (33) on the anti-falling ratchet plate (32) is a waist-shaped hole, a long waist hole is formed in the inner side of the waist-shaped hole, and a return spring (34) is arranged in the long waist hole.
4. 4. The self-controlled retraction and release anti-falling device for the personnel safety hanging belt according to claim 1, wherein the check pawl (37) comprises a rocker (372) and a stop rod (371) arranged at the front end of the rocker (372), an arc-shaped bulge is arranged in the middle of the rocker (372), and a groove (71) corresponding to the check pawl (37) is formed in the shell (7).
5. 5. The self-controlled retraction and release anti-falling device of the personnel safety sling according to claim 2, wherein the anti-falling ratchet disc (32) is provided with tooth grooves (321) corresponding to the ratchet teeth of the small ratchet wheel (382).
6. 6. The personal safety harness self-controlled retraction anti-falling device according to claim 1 wherein the scroll spring assembly (2) comprises a scroll spring plate (21) connected with a harness wheel carrier plate (4), and scroll springs (22) are arranged in the scroll spring plate (21).

Description

Personnel safety hanging belt self-control winding and unwinding anti-falling device Technical Field The utility model relates to the technical field of safety protection, in particular to a personal safety sling self-control retraction anti-falling device. Background When the crane is retracted to the sea surface from the ship, the ship working boat often faces the interference of wind waves under high sea conditions, so that the mother ship and the working boat are in a relative swinging state, personnel in the boat are in potential safety hazards, and mechanical parts of the crane are damaged to cause injury accidents. At present, the measures adopted for personnel safety are to tie civil safety belts on the small boats, and the passive safety measures are adopted, so that the safety performance requirements of personnel cannot be completely ensured, and in more cases, no safety anti-falling protection measures exist, so that the sea condition requirements of the working boats can be reduced. Chinese publication No. CN110548236a discloses a buffer type speed difference anti-falling device, in which a locking structure including a pawl and a ratchet wheel is disposed in a space between a frame and a drum wheel disc, a ratchet wheel guiding device is fixed on the frame, and an inner buffer damping device for applying resistance to a rotating ratchet wheel is disposed between the frame and the ratchet wheel so as to gradually stop the rotation. The device adopts centrifugal double inner locking mechanism, reduces the impact force received by human body in the moment of falling locking through the inner buffering damping device and the outer buffering tension spring, ensures that the anti-falling device can effectively reduce the damage of impact to human body under the premise of reliable locking. However, for the working boat for ships, when the working boat is lowered to the sea surface to leave, the hanging belt on the conventional speed difference anti-falling device can be automatically retracted to the high position, and when the working boat returns, the safety belt of personnel on the boat can not be connected with the anti-falling device, so that the personnel on the boat have no safety hidden trouble of safety anti-falling protection when the boat is hoisted. Disclosure of Invention The utility model aims to solve the technical problems and provide the self-control retraction anti-falling device for the personnel safety hanging belt, which can meet the functions of self-control unidirectional release, self-control retraction and safety anti-falling of the hanging belt under any operation environment conditions. The technical scheme includes that the self-control retraction and prevention device for the personnel safety hanging belt comprises a shell, wherein the upper end of the shell is connected with a hanging hook through a shaft, a hanging belt wheel frame disc is connected in the shell through a rotating shaft, a hanging belt is arranged in the middle of the hanging belt wheel frame disc, a volute spring component is arranged on one side of the hanging belt frame disc, a check mechanism is arranged on the other side of the hanging belt frame disc, the check mechanism comprises a descent prevention component, a check component is arranged on the shell on one side of the descent prevention component, self-control unidirectional release, self-control retraction and safety anti-falling functions of the hanging belt are achieved through the descent prevention component and the check component, the check component comprises a check ratchet wheel and a check pawl arranged on one side of the check ratchet wheel, the front end of the check pawl is in contact with the check ratchet wheel disc, the check ratchet wheel comprises a ratchet wheel body, a plurality of top balls are uniformly distributed on the periphery of the ratchet wheel body, and a small ratchet wheel is arranged on one side of the ratchet wheel body. The anti-falling assembly comprises an anti-falling ratchet plate and a check ratchet plate, a plurality of anti-falling shaft pins penetrate through a fixing plate and a shell to be connected with the anti-falling ratchet plate, anti-falling pawls are connected to the check ratchet plate through pawl shafts, pawl tension springs are arranged between two opposite anti-falling pawls, and safety anti-falling and single-double reversing function switching are achieved through the anti-falling pawls. Preferably, the hole connected with the anti-drop shaft pin on the anti-drop ratchet plate is a waist-shaped hole, a long waist hole is formed in the inner side of the waist-shaped hole, and a reset spring is arranged in the long waist hole. Preferably, the check pawl comprises a rocker and a stop rod arranged at the front end of the rocker, an arc-shaped bulge is arranged in the middle of the rocker, a groove corresponding to the check pawl is arranged on the shell, and the check pawl swings in t