Safety belt anti-falling device

Abstract

The invention relates to the field of safety belts, and discloses a safety belt anti-falling device which comprises a frame arranged on a safety rope in a sleeving mode and further comprises a supporting piece arranged on the frame, connected with the safety rope in an abutting mode and used for supporting the safety rope. The adjusting part is arranged on the supporting part and moves along with the supporting part; the fixing part is arranged on the frame and is used for fixing the safety rope when the falling condition occurs; the control component is arranged on the frame, connected with the adjusting component and used for controlling the fixing component to be started when the adjusting component moves, the safety rope can be fixed in time at the initial falling stage, personnel are effectively prevented from continuing falling, key guarantee is provided for life safety of personnel in dangerous scenes such as high-altitude operation, and the safety of the personnel is improved. And the injury degree caused by falling accidents is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of seat belt technology, specifically to a seat belt fall prevention device. Background Technology

[0002] In scenarios involving the risk of falls, such as working at heights and mountaineering expeditions, safety harnesses are crucial equipment for ensuring personnel safety. Suspended platforms are construction tools used for high-altitude operations in building engineering, such as curtain wall installation and exterior wall cleaning. When using a suspended platform, a rope is extended from it, and workers on the platform thread the self-locking device from their safety harness through the rope.

[0003] Existing equipment has the following drawbacks: when a fall occurs, the traditional safety belt's fixing mechanism is not fast enough and has limited fixing effect. It cannot quickly and effectively fix the safety rope securely, cannot stop people from falling in time, and cannot provide reliable safety protection for people, increasing the severity and harm of fall accidents.

[0004] Therefore, this application proposes a safety belt fall protection device to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a safety belt fall protection device to solve the problem that the above-mentioned failure to provide reliable safety protection for personnel increases the severity and harm of fall accidents.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a safety belt fall arrestor, comprising a frame fitted onto a safety rope, and further comprising: A support member, mounted on the frame and abutting against the safety rope, is used to support the safety rope; An adjustment component is mounted on the support member and moves with the support member; A fixing component, mounted on the frame, is used to secure the safety rope in the event of a fall. A control component, disposed on the frame and connected to the adjustment component, is used to control the activation of the fixed component when the adjustment component moves.

[0007] The framework includes: The restraint plate has an arc-shaped structure at the position where it connects to the safety rope. A limiting plate is inclinedly disposed on one side of the constraint plate to abut against the safety rope inside the constraint plate; A connecting plate is disposed on the side of the constraint plate away from the limiting plate, and is used to install a fall protection device; A support plate, disposed on the connecting plate, is used to mount the support member; A top plate, located on top of the connecting plate, is used to mount the fixing component.

[0008] The support member includes: The first friction wheel is mounted on the support plate and abuts against the safety rope; The second friction wheel is mounted on the support plate and abuts against the safety rope, and works with the first friction wheel to restrain the safety rope between the first friction wheel and the second friction wheel; A rotating shaft is sleeved on the support plate, and the second friction wheel is fixed on the rotating shaft.

[0009] The adjusting component includes: A fixing block is fixed on the rotating shaft; The positioning shaft is fixed on the rotating shaft; The swing block is sleeved on the positioning shaft and connected to the fixed block by a first elastic element.

[0010] The control component includes: Mounting plate, fixed to the connecting plate; A sliding plate is mounted on the mounting plate. A pressure plate is disposed on the side of the sliding plate near the throwing block; An air switch is mounted on the connecting plate and located on the side of the slide away from the pressure plate.

[0011] The control component also includes; A second elastic element is disposed between the pressure plate and the mounting plate.

[0012] The fixing component includes: The power component is located inside the top plate and is electrically connected to the air switch; A clamp is provided at the power output end of the power component; An abutment plate, located inside the top plate, is used in conjunction with the clamping plate to clamp and secure the safety rope in the event of a fall. A central block is provided in the middle of the top plate, and the power output end of the power component passes through the central block.

[0013] The abutment plate has a semi-circular structure design, and the clamping plate has a semi-circular groove on the side near the clamping plate.

[0014] The top plate has a through hole at its upper end for the clamping plate to move, and the two sides of the clamping plate abut against the through hole.

[0015] Both the clamping plate and the abutment plate are provided with anti-slip pads on the sides that are close to each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention, by incorporating a fall arrest device, allows the adjusting component to move rapidly due to the acceleration generated by the fall when a person falls. This motion signal is captured by the control component, which then quickly activates the fixing component. Once activated, the fixing component applies a stable fixing force to the safety rope, preventing it from slipping or loosening. The entire process has an extremely short response time, enabling the safety rope to be secured in the early stages of a fall, effectively preventing the person from falling further. This provides crucial protection for the lives of personnel in dangerous scenarios such as high-altitude operations, and significantly reduces the severity of injuries caused by fall accidents. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection between the fall protection device and the safety rope in one embodiment of the present invention; Figure 2 This is a schematic diagram of the main structure in one embodiment of the present invention; Figure 3 This is a schematic diagram of the frame structure in one embodiment of the present invention; Figure 4 This is a schematic diagram of the connecting plate in one embodiment of the present invention; Figure 5 This is a structural schematic diagram showing the installation positions of the fixing component and the support component in one embodiment of the present invention; Figure 6 for Figure 3 Enlarged structural diagram of section A in the middle; Figure 7 for Figure 4 Enlarged structural diagram of section B.

[0018] In the diagram: 1. Frame; 11. Constraint plate; 12. Limiting plate; 13. Connecting plate; 14. Support plate; 15. Top plate; 1501. Perforation; 151. Center block; 2. Safety rope; 3. Support component; 31. First friction wheel; 32. Second friction wheel; 33. Rotating shaft; 4. Adjusting component; 41. Fixing block; 42. First elastic component; 43. Thrusting block; 44. Positioning shaft; 5. Control component; 51. Air switch; 52. Pressure plate; 53. Slide plate; 54. Mounting plate; 55. Second elastic component; 6. Fixing component; 61. Power component; 62. Clamping plate; 63. Abutment plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-7 The present invention provides a technical solution: a safety belt fall prevention device, including a frame 1 sleeved on a safety rope 2, and further including: a support member 3, disposed on the frame 1 and abutting against the safety rope 2, for supporting the safety rope 2; an adjusting member 4, disposed on the support member 3 and moving with the support member 3; a fixing member 6, disposed on the frame 1, for fixing the safety rope 2 in the event of a fall; and a control member 5, disposed on the frame 1 and connected to the adjusting member 4, for controlling the fixing member 6 to start when the adjusting member 4 moves.

[0021] It should be noted that during operation, when installing the fall arrestor, the safety rope 2 is threaded through the fixed component 6, then through the support component 3, and finally out from the bottom of the frame 1. When a worker falls, the support component 3 rotates under the action of friction. During the rotation of the support component 3, it drives the adjusting component 4 to move. The adjusting component 4 opens the control component 5, which in turn activates the fixed component 6, causing the fixed component 6 to clamp and secure the safety rope 2. By setting up this fall arrestor, when a person falls, the adjusting component 4 will move rapidly due to the acceleration generated by the fall. This motion signal is captured by the control component 5, which then quickly activates the fixed component 6. After activation, the fixed component 6 can apply a stable fixing force to the safety rope 2, preventing the safety rope 2 from slipping or loosening. The entire process has an extremely short response time, which can secure the safety rope 2 in the early stages of a fall, effectively preventing the person from falling further. This provides a key guarantee for the life safety of personnel in dangerous scenarios such as high-altitude operations, and greatly reduces the degree of injury caused by fall accidents.

[0022] In one embodiment, the frame 1 includes: a constraint plate 11, which has an arc-shaped structure at the position where it connects to the safety rope 2; a limiting plate 12, which is inclinedly disposed on one side of the constraint plate 11 and is used to abut the safety rope 2 inside the constraint plate 11; a connecting plate 13, which is disposed on the side of the constraint plate 11 away from the limiting plate 12 and is used to install a fall arrestor; a support plate 14, which is disposed on the connecting plate 13 and is used to install a support member 3; and a top plate 15, which is disposed on the top of the connecting plate 13 and is used to install a fixing component 6.

[0023] This design is for reference. Figure 1-5When installing the fall arrest device, the safety rope 2 is passed through the fixing component 6 in the top plate 15, then through the support component 3 on the support plate 14, and then into the constraint plate 11. The limiting plate 12 on one side of the constraint plate 11 abuts against the safety rope 2. The limiting plate 12 is inclined on one side of the constraint plate 11, which can effectively abut against the safety rope 2 inside the constraint plate 11. This can prevent the safety rope 2 from shaking or shifting during the operation of the device, so that the safety rope 2 is always kept in a stable position, and the entire fall arrest device can be stably installed on the safety rope 2.

[0024] In one embodiment, the support member 3 includes: a first friction wheel 31, which is disposed on the support plate 14 and abuts against the safety rope 2; a second friction wheel 32, which is disposed on the support plate 14 and abuts against the safety rope 2, and cooperates with the first friction wheel 31 to restrict the safety rope 2 between the first friction wheel 31 and the second friction wheel 32; and a rotating shaft 33, which is sleeved on the support plate 14, and the second friction wheel 32 is fixed on the rotating shaft 33.

[0025] This design is for reference. Figure 1-5 The first friction wheel 31 and the second friction wheel 32 work together to restrain the safety rope 2 between them. This double-wheel clamping structure can apply a uniform and stable friction force to the safety rope 2 from two directions, which enhances the fixing effect of the safety rope 2 in the device. When the personnel move normally, the safety rope 2 can slide smoothly between the friction wheels. However, in case of an emergency such as a fall, the second friction wheel 32 will drive the rotating shaft 33 to rotate rapidly. The rotation of the rotating shaft 33 will drive the adjusting component 4 to move, so that the adjusting component 4 transmits a signal to the control component 5, which controls the fixing component 6 to fix the safety rope 2, thereby better ensuring the safety of personnel.

[0026] In one embodiment, the adjusting component 4 includes: a fixing block 41 fixed on the rotating shaft 33; a positioning shaft 44 fixed on the rotating shaft 33; and a swing block 43 sleeved on the positioning shaft 44 and connected to the fixing block 41 via a first elastic element 42, the first elastic element 42 being made of a damped spring or an elastic pad.

[0027] This design is for reference. Figure 7The fixed block 41 and the positioning shaft 44 are directly fixed on the rotating shaft 33. The swing block 43 is positioned by the positioning shaft 44 and connected to the fixed block 41 by means of the first elastic element 42. During installation, the components are simply assembled onto the rotating shaft 33 in sequence. The swing block 43 is sleeved on the positioning shaft 44. When the personnel move normally, the centrifugal force on the swing block 43 is small due to the relatively slow and stable speed. Under the tension of the first elastic element 42, it remains in a relatively stable position. However, when the personnel fall, the instantaneous acceleration generated by the fall will cause the rotating shaft 33 to drive the swing block 43 to generate a large centrifugal force, thereby overcoming the tension of the first elastic element 42 and quickly swinging it outward around the positioning shaft 44. This response mechanism can detect abnormalities in the early stage of the fall in time, and buy valuable time for subsequent fall protection actions.

[0028] In one embodiment, the control component 5 includes: a mounting plate 54 fixed on the connecting plate 13; a sliding plate 53 passing through the mounting plate 54; a pressure plate 52 disposed on the side of the sliding plate 53 near the throwing block 43; and an air switch 51 disposed on the connecting plate 13 and located on the side of the sliding plate 53 away from the pressure plate 52.

[0029] This design is for reference. Figure 3-6 The mounting plate 54 is fixed on the connecting plate 13, providing a stable and reliable mounting platform for the entire control component 5. When the swing block 43 rotates along the positioning shaft 44 under the action of centrifugal force, it will squeeze the pressure plate 52, causing the sliding plate 53 to slide on the mounting plate 54. The sliding plate 53 presses the air switch 51. As the final control execution element, the air switch 51 can quickly cut off or connect the circuit according to the movement of the sliding plate 53, and control the fixing component 6 to fix the safety rope 2. This precise sensing capability ensures that the control component 5 can react in time at the moment of the fall, activate the fixing component 6 to fix the safety rope 2, thereby quickly preventing the person from falling further and ensuring the safety of the person's life.

[0030] In one embodiment, the control component 5 further includes a second elastic element 55 disposed between the pressure plate 52 and the mounting plate 54.

[0031] This design is for reference. Figure 6 The second elastic element 55 is made of a damped spring or elastic pad. When the pressure plate 52 moves under the action of the swing block 43, it will squeeze the second elastic element 55, and the second elastic element 55 will undergo elastic deformation. When the swing block 43 stops acting on the pressure plate 52, the second elastic element 55 can drive the pressure plate 52 to perform a reset movement, preparing for the next signal sensing.

[0032] In one embodiment, the fixing component 6 includes: a power component 61, which is disposed inside the top plate 15 and electrically connected to the air switch 51; a clamping plate 62, which is disposed at the power output end of the power component 61; an abutment plate 63, which is disposed inside the top plate 15 and is used in conjunction with the clamping plate 62 to clamp and fix the safety rope 2 in the event of a fall; a center block 151 is provided in the middle of the top plate 15, and the power output end of the power component 61 passes through the center block 151.

[0033] This design is for reference. Figure 2 ,as well as Figure 5 The power component 61 includes, but is not limited to, hydraulic cylinders, linear guides, electric push rods, and pneumatic cylinders. A central block 151 is provided in the middle of the top plate 15, and the power output end of the power component 61 passes through the central block 151. The central block 151 plays a guiding and supporting role, ensuring that the power output end of the power component 61 remains stable when transmitting power, reducing energy loss and component wear caused by offset or shaking during power transmission. The power component 61 is electrically connected to the air switch 51. When the control component 5 detects a personnel fall signal and... When the air switch 51 is triggered, it can quickly connect the circuit, causing the power component 61 to start immediately. The abutment plate 63 is located inside the top plate 15 and works in conjunction with the clamping plate 62. When the power component 61 is started, it will drive the clamping plate 62 to move towards the abutment plate 63, thereby clamping the safety rope 2 tightly between the clamping plate 62 and the abutment plate 63. This method of cooperation can generate a large clamping force, ensuring that the safety rope 2 will not slip or loosen during the fall, effectively preventing the person from continuing to fall, and improving the fixation effect and safety of the device.

[0034] In one embodiment, the abutment plate 63 is designed with a semi-circular structure, and the clamping plate 62 has a semi-circular groove on the side near the clamping plate 62.

[0035] This design is for reference. Figure 2-3 ,as well as Figure 5 The safety rope 2 is typically cylindrical. The semi-circular structure of the abutment plate 63 and the semi-circular groove on the clamping plate 62 can perfectly fit the shape of the safety rope 2. When the clamping plate 62 moves towards the abutment plate 63 and clamps the safety rope 2 under the drive of the power component 61, this fitting design allows the clamping plate 62 and the abutment plate 63 to apply pressure evenly on the entire circumference of the safety rope 2, providing a more stable and reliable fixing effect and ensuring that the safety rope 2 will not slip or loosen during a fall.

[0036] In one embodiment, the upper end of the top plate 15 has a through hole 1501 for the clamping plate 62 to move, and the two sides of the clamping plate 62 abut against the through hole 1501.

[0037] This design is for reference. Figure 2-3 ,as well as Figure 5The perforation 1501 provides a clear guide track for the movement of the clamping plate 62. When the power component 61 drives the clamping plate 62 to move, the clamping plate 62 can only move in a straight line along the path specified by the perforation 1501 without any deviation or swaying. This precise movement ensures that when the clamping plate 62 reaches the designated position, it accurately cooperates with the abutment plate 63 to firmly clamp the safety rope 2.

[0038] In one embodiment, anti-slip pads are provided on the sides of the clamping plate 62 and the abutment plate 63 that are close to each other.

[0039] This design is for reference. Figure 5 Anti-slip mats are typically made of materials with a high coefficient of friction, such as rubber or silicone. When the clamping plate 62 and the abutment plate 63 approach each other and clamp the safety rope 2 under the drive of the power component 61, a large frictional force is generated between the anti-slip mat and the surface of the safety rope 2. This frictional force can effectively prevent the safety rope 2 from sliding in the clamped state, ensuring that the safety rope 2 can be firmly fixed when a person falls, and will not continue to move due to the falling force of the person, thereby timely preventing the person from falling further and providing reliable safety protection for the person.

[0040] Furthermore, if the embodiments involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relation to the specification. The significance or implied number of the indicated technical features is not specified. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

Claims

1. A fall arrest device for a safety harness comprising a frame (1) which is fitted over a safety line (2), characterised in that, Also include: Support (3) is arranged on the frame (1) and is in contact with the safety rope (2), for supporting the safety rope (2); Adjusting component (4) is arranged on the support (3) and moves with the support (3); Fixed component (6) is arranged on the frame (1), for fixing the safety rope (2) when falling occurs; Control component (5) is arranged on the frame (1) and connected with the adjusting component (4), for controlling the fixed component (6) to start when the adjusting component (4) moves.

2. A safety belt fall arrest device according to claim 1, characterised in that: The frame (1) comprises: Restraining plate (11) is designed as a circular arc structure at the position connected with the safety rope (2); Limiting plate (12) is arranged on one side of the restraining plate (11) and is used for abutting against the safety rope (2) inside the restraining plate (11); Connecting plate (13) is arranged on the side of the restraining plate (11) away from the limiting plate (12) and is used for installing the anti-falling device; Supporting plate (14) is arranged on the connecting plate (13) and is used for installing the support (3); Top plate (15) is arranged on the top of the connecting plate (13) and is used for installing the fixed component (6).

3. A safety belt fall arrest device according to claim 2, wherein: The support (3) comprises: First friction wheel (31) is arranged on the supporting plate (14) and is in contact with the safety rope (2); Second friction wheel (32) is arranged on the supporting plate (14) and is in contact with the safety rope (2), and cooperates with the first friction wheel (31) to limit the safety rope (2) between the first friction wheel (31) and the second friction wheel (32); Rotating shaft (33) is sleeved on the supporting plate (14), and the second friction wheel (32) is fixed on the rotating shaft (33).

4. A safety belt fall arrest device according to claim 3, wherein: The adjusting component (4) comprises: Fixed block (41) is fixed on the rotating shaft (33); Positioning shaft (44) is fixed on the rotating shaft (33); Swing block (43) is sleeved on the positioning shaft (44) and connected with the fixed block (41) through the first elastic member (42).

5. A safety harness fall arrest device according to claim 4, wherein: The control component (5) comprises: Mounting plate (54) is fixed on the connecting plate (13); Slide plate (53) is arranged on the mounting plate (54); Pressing plate (52) is arranged on the side of the slide plate (53) close to the swing block (43); Air switch (51) is arranged on the connecting plate (13) and located on the side of the slide plate (53) away from the pressing plate (52).

6. A safety harness fall arrest device according to claim 5, wherein: The control component (5) further comprises: Second elastic member (55) is arranged between the pressing plate (52) and the mounting plate (54).

7. A safety harness fall arrest device according to claim 6, wherein: The fixed component (6) comprises: Power member (61) is arranged inside the top plate (15) and is electrically connected with the air switch (51); Clamp plate (62) is arranged on the power output end of the power member (61); Abutting plate (63) is arranged inside the top plate (15) and cooperates with the clamp plate (62) to clamp and fix the safety rope (2) when falling occurs; The middle part of the top plate (15) is provided with a center block (151), and the power output end of the power element (61) penetrates the center block (151).

8. A safety harness fall arrest device according to claim 7, wherein: The abutting plate (63) is designed in a semicircular structure, and a semicircular groove is formed on the side of the clamping plate (62) close to the clamping plate (62).

9. The safety belt fall arrest device of claim 7, wherein: The upper end of the top plate (15) is provided with a through hole (1501) for the movement of the clamping plate (62), and the two sides of the clamping plate (62) abut against the through hole (1501).

10. The safety belt fall arrest device of claim 7, wherein: The side close to each other of the clamping plate (62) and the abutting plate (63) is provided with a non-slip pad.

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