Self-locking anti-falling device for construction

Abstract

The utility model relates to a kind of self-locking anti-falling device for building, including scaffold attachment assembly, including slidable clamping on the sliding holder of scaffold, the anti-falling rope of being passed in the sliding holder, and the first rope section drive wheel rotatably connected in the sliding holder;User connection component, including safety belt, fixedly connected on the connection shell of the safety belt, and the second rope section drive wheel rotatably connected in the connection shell, the rotation of the first rope section drive wheel and the second rope section drive wheel to drive the anti-falling rope telescopic;By setting the anti-falling rope structure of double-end telescopic, the synchronous rope release / rope winding of sliding holder and user connection component is realized, significantly increase the transverse moving range of operating personnel on cross bar, the telescopic control of sliding holder to anti-falling rope first rope section, can adapt to the change of scaffold height, avoid the adjustment of single point in connection shell to the influence of anti-falling rope on transverse working moving range.

Description

Technical Field

[0001] This utility model belongs to the field of architecture, specifically designing a self-locking fall arrestor for construction. Background Technology

[0002] In high-rise building construction, fall arrestors are core equipment for ensuring worker safety. Traditional fall arrestors mostly use a single-point locking structure, with one end of the fall arrest rope fixed to a horizontal bar of the scaffolding and the other end connected to the user's safety belt. This type of device has significant drawbacks:

[0003] Due to limited travel, the fall arrest rope can only extend and retract at the user connection end, and the range of movement of the operator along the crossbar is limited by the initial length of the rope.

[0004] It has poor adaptability. When the height of the horizontal bars of the upper and lower layers of scaffolding changes, the rope fixing points need to be adjusted manually and repeatedly. Otherwise, the ropes are prone to becoming taut or dragging on the ground.

[0005] The existing locking mechanism relies on a single speed sensor, which cannot distinguish between normal descent and sudden fall, and is prone to accidental locking, affecting work efficiency. Utility Model Content

[0006] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a self-locking fall arrest device for construction.

[0007] The building uses a self-locking fall arrestor, including:

[0008] The scaffolding attachment assembly includes a sliding clamp that can be slidably clamped onto the scaffolding, a fall arresting rope passing through the sliding clamp, and a first rope segment drive wheel rotatably connected to the sliding clamp;

[0009] The user connection assembly includes a safety belt, a connection housing fixedly connected to the safety belt, and a second rope segment drive wheel rotatably connected within the connection housing. The rotation of the first rope segment drive wheel and the second rope segment drive wheel drives the extension and retraction of the fall arrest rope.

[0010] The locking assembly includes a monitoring module and a locking module. The monitoring module includes an acceleration sensor located in the sliding gripper and a height sensor located on the connecting housing. The locking module includes locking mechanisms located in the sliding gripper and the connecting housing, respectively, for limiting the rotation of the corresponding rope segment drive wheel.

[0011] Furthermore, the sliding clamp includes a first clamping block and a second clamping block that can be locked together, forming a sliding channel between the first clamping block and the second clamping block for the scaffolding to pass through.

[0012] Furthermore, the second rope segment drive wheel includes a first pulley and a second pulley rotatably connected within the connecting housing, and the fall arresting rope is sequentially wound around the first rope segment drive wheel, the first pulley, and the second pulley.

[0013] Furthermore, the groove surfaces of the first rope segment drive wheel, the first pulley, and the second pulley are all provided with a high-friction material layer.

[0014] Furthermore, the acceleration sensor is configured to monitor the acceleration of the first rope segment drive wheel to determine the fall protection status, and the height sensor is configured to monitor the height change of the user connection component in real time to determine the fall protection status.

[0015] Furthermore, it also includes a control unit, which determines the fall state based on the data from the speed sensor and the acceleration sensor and triggers the locking module, and the control unit is used to trigger the release after locking.

[0016] Furthermore, the locking mechanism includes limiting teeth located at the ends of the first rope segment drive wheel and the first pulley, and limiting blocks that engage with the limiting teeth.

[0017] Furthermore, the limiting block is connected to an electromagnetic drive unit, which responds to the command of the control unit to push the limiting block to engage with the limiting teeth.

[0018] Furthermore, the anti-fall rope has a wrap angle of 360° on the first rope segment drive wheel and the first pulley, and a wrap angle of 90° on the second pulley.

[0019] Furthermore, when the acceleration sensor detects an abnormal stretching momentarily, and / or when the height sensor detects an abnormal falling speed, the rotation of the first rope segment drive wheel and the first pulley is simultaneously locked.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model, as a self-locking fall arrestor for construction, features a double-end telescopic fall arrestor rope structure. This allows for synchronized rope release / retraction between the sliding gripper and the user connection component, significantly increasing the lateral movement range of workers on the crossbar. The telescopic control of the first rope segment by the sliding gripper adapts to changes in scaffold height, preventing single-point adjustments within the connecting housing from affecting the lateral working range. A dual-sensor collaborative monitoring mechanism provides dual assessment of the fall status, greatly reducing the risk of misjudgment or missed judgment and ensuring accurate emergency braking. An independent high-friction material layer drive wheel assembly, combined with a 360° wrap-around rope design, ensures no slippage between the fall arrestor rope and the drive wheel, effectively transmitting braking force. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the user connection component of this utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the user connection component of this utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the scaffolding attachment component of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the sliding clamp of this utility model;

[0028] Figure 6 This is a schematic diagram of the circuit connection structure of the locking component and the control unit of this utility model.

[0029] In the figure: 1 scaffold attachment assembly, 11 sliding clamp, 111 first clamping block, 112 second clamping block, 113 sliding channel, 12 fall arresting rope, 13 first rope segment drive wheel;

[0030] 2 User connection assembly, 21 Safety belt, 22 Connection housing, 23 Second rope segment drive wheel, 231 First pulley, 232 Second pulley;

[0031] 3 Locking assembly, 31 Monitoring module, 311 Acceleration sensor, 312 Height sensor, 32 Locking module, 321 Locking mechanism, 3211 Limiting tooth, 3212 Limiting block, 4 Control unit, 5 Scaffolding. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] The following is combined Figure 1-6 This invention describes a specific embodiment of a self-locking fall arrestor for construction, comprising:

[0035] The scaffold attachment assembly 1 includes a sliding clamp 11 that can be slidably clamped onto the scaffold 5, a fall arrest rope 12 that passes through the sliding clamp 11, and a first rope segment drive wheel 13 that is rotatably connected to the sliding clamp 11. The sliding clamp 11 is slidably clamped onto the crossbar of the scaffold 5. The high-strength fall arrest rope 12 passes through the sliding clamp 11 and cooperates with the built-in first rope segment drive wheel 13. The first rope segment drive wheel 13 can rotate freely and drives the fall arrest rope 12 to extend and retract through friction.

[0036] User connection component 2 includes a safety belt 21, a connection housing 22 fixedly connected to the safety belt 21, and a second rope segment drive wheel 23 rotatably connected within the connection housing 22. The rotation of the first rope segment drive wheel 23 and the first pulley drives the extension and retraction of the fall arrest rope 12. The safety belt 21 is preferably a safety vest. The connection body is connected to the safety belt 21, which is worn over the worker's body. An independent second rope segment drive wheel 23 is located inside the connection housing 22. The synchronous extension and retraction of the fall arrest rope 12 is achieved through the rotation of the second rope segment drive wheel 23. The rope 12 forms telescopic sections at both ends through the sliding clamp 11 and the user connection assembly 2, which can increase the pull-out length of the fall arrest rope 12 and improve the lateral travel of the worker on the crossbar. In addition, since the sliding clamp 11 can be used for the extension and retraction of the first rope section 121 of the fall arrest rope 12, that is, the length of the fall arrest rope 12 between the sliding clamp 11 and the safety belt 21 can be extended, the telescopicity of the fall arrest rope 12 in the sliding clamp 11 can be adjusted according to the change of the height of the upper and lower crossbars, avoiding the need to adapt to the change of the height of the upper and lower crossbars only by stretching the fall arrest rope 12 in the connecting housing 22.

[0037] The locking assembly 3 includes a monitoring module 31 and a locking module 32. The monitoring module 31 includes an acceleration sensor 311 located in the sliding clamp 11 and a height sensor 312 located on the connecting housing 22. The locking module 32 includes a locking mechanism 321 located in the sliding clamp 11 and the connecting housing 22 respectively, used to limit the rotation of the corresponding rope segment drive wheel. The acceleration sensor 311 is located in the sliding clamp 11. The acceleration sensor 311 monitors the acceleration of the first rope segment drive wheel 13 to monitor the instantaneous large-amplitude extension and contraction of the fall arrest rope 12 in the clamp. By monitoring the acceleration value in real time, it determines whether there is a fall hazard. The height sensor 312 is connected to the connecting housing 22. By monitoring the change in height above the ground or the plane in real time, it determines that there is a fall hazard when the height detected is higher than a set threshold, where the set threshold includes the vertical movement distance of the operator.

[0038] Please refer to Figures 1-3 As shown, the sliding clamp 11 includes a first clamping block 111 and a second clamping block 112 that can be locked together. A sliding channel 113 is formed between the first clamping block 111 and the second clamping block 112 for the scaffold 5 to pass through. The clamp adopts a clamping block design that can be locked together. The sliding clamp 11 is a conventional technology. The connection between the first clamping block 111 and the second clamping block 112 can be locked by bolts, snap-fit ​​locking or other methods, which are not specifically limited here. A through sliding channel 113 is formed between the two clamping blocks, which can be firmly clamped on the crossbar of the scaffold 5 and allows the position to be adjusted by sliding along the crossbar. The user can carry out construction work at any position along the length of the crossbar.

[0039] Please refer to Figures 1-3 As shown, the second rope segment drive wheel 23 includes a first pulley 231 and a second pulley 232 rotatably connected within the connecting housing 22. The fall arrest rope 12 is sequentially wound around the first rope segment drive wheel 13, the first pulley 231, and the second pulley 232. After the fall arrest rope 12 is led out from the drive wheel of the scaffold attachment assembly 1, it sequentially winds around the first pulley 231 and the second pulley 232 to form a continuous path. The connecting housing 22 is equipped with two sets of first pulleys 231 and second pulleys 232 that form a gap, which can create a gap between the fall arrest ropes 12 connected to the first pulleys 231 and the second pulleys 232 to reduce the entanglement between the drooping fall arrest ropes 12.

[0040] Please refer to Figure 5 As shown, the groove surfaces of the first rope segment drive wheel 13, the first pulley 231, and the second pulley 232 are all provided with a high-friction material layer. The friction material layer can be any suitable friction-enhancing material, such as rubber or other friction-enhancing materials, which are all existing technologies and will not be described in detail here.

[0041] Please refer to Figure 1 , Figure 2 and Figure 6 As shown, the acceleration sensor 311 is configured to monitor the acceleration of the first rope segment drive wheel 13 to determine the fall protection status. The acceleration sensor 311 monitors the speed change of the first rope segment drive wheel 13 in real time, and then analyzes the fall protection status of the fall protection rope 12 at the first rope segment drive wheel 13. When the acceleration value exceeds a preset threshold, it is detected as a falling state. At the same time, the height sensor 312 is configured to monitor the height change of the user connection component 2 in real time to determine the fall protection status, dynamically monitor the height displacement of the user connection component 2, and determine the abnormal falling speed.

[0042] Please refer to Figure 6 As shown, it also includes a control unit 4. The control unit 4 determines the fall status based on the data from the speed sensor and the acceleration sensor 311 and triggers the locking module 32. The control unit 4 is used to analyze the fall protection data and to perform emergency locking on the rotation of the first rope segment 121 pulley and the first pulley 231 in the fall protection, so as to provide double protection for the worker's fall protection. The control unit 4 is also used to trigger the release after locking, and can be manually released in case of misjudgment.

[0043] Please refer to Figures 4-6 As shown, the locking mechanism 321 includes a limiting tooth 3211 located at the ends of the first rope segment drive wheel 13 and the first pulley 231, and a limiting block 3212 that engages with the limiting tooth 3211. By providing the limiting tooth 3211 at the ends of the first rope segment drive wheel 13 and the first pulley 231, and engaging the limiting block 3212 on the limiting tooth 3211, the first rope segment drive wheel 13 and the first pulley 231 stop driving the synchronous extension and retraction of the fall arrest rope 12, thereby providing fall protection for high-altitude operations.

[0044] Please refer to Figure 6 As shown, the limiting block 3212 is connected to an electromagnetic drive unit. The electromagnetic drive unit responds to the command of the control unit 4 to push the limiting block 3212 to engage with the limiting tooth 3211. When the height sensor 312 detects that the descent speed exceeds the safety threshold, and / or the acceleration sensor 311 detects a continuous weightlessness state, the control unit 4 determines it to be a fall accident. The control unit 4 immediately sends a command to the electromagnetic drive unit of the two locking mechanisms 321 to push the limiting block 3212 to engage with the driving wheel limiting tooth 3211, and simultaneously locks the rotation of the driving wheel in the sliding gripper 11 and the first pulley 231 in the connecting housing 22. The fall arresting rope 12 is instantly tensioned to prevent the user from continuing to fall.

[0045] Please refer to Figure 3As shown, the wrap angle of the fall arresting rope 12 on the first rope segment drive wheel 13 and the first pulley 231 is 360°, and the wrap angle on the second pulley 232 is 90°. The fall arresting rope 12 wraps around the first rope segment drive wheel 13 and the first pulley 231 at least once, so that the wheel body and the fall arresting rope 12 are prevented from slipping under the action of the friction material layer.

[0046] Please refer to Figures 3-6 As shown, when the value monitored by the acceleration sensor 311 exceeds the threshold and / or the height sensor 312 detects a deviation in the height displacement value, the rotation of the first rope segment drive wheel 13 and the first pulley 231 is simultaneously locked.

[0047] In another embodiment of locking the fall arrestor rope 12, in order to reduce the complexity of raising the first rope segment 121 and the second rope segment 122 of the fall arrestor rope 12 and the complexity of dual-element monitoring of fall arrest, since the first rope segment drive wheel 13 is controlled by an independent electromagnetic drive to operate the locking assembly 3, the extension and retraction of the fall arrestor rope 12 in the sliding clamp 11 can be locked, so that the end of the fall arrestor rope 12 connected to the scaffold 5 is a fixed end, and only the height sensor needs to monitor the fall arrest.

[0048] Working principle of this utility model:

[0049] The scaffold attachment assembly 1 is slidably clamped onto the crossbar of the scaffold 5. The fall arrest rope 12, which is installed inside the scaffold attachment assembly 1, passes through the first rope segment drive wheel 13, the first pulley 231 and the second pulley 232 in sequence. The first rope segment drive wheel 13 can drive the fall arrest rope 12 to extend and retract within the sliding clamp 11. The first pulley 231 can drive the fall arrest rope 12 to extend and retract within the connecting housing 22. The first rope segment drive wheel 13 and the first pulley 231 rely on friction to achieve the extension and retraction of the fall arrest rope 12.

[0050] User connection component 2 is secured to the worker's body via safety belt 21. Its internal second rope segment drive wheel 23 is linked to the fall arrest rope 12, creating a double-end extendable section between the sliding gripper 11 and the connecting housing 22. When the worker moves laterally, both ends of the fall arrest rope 12 are simultaneously released or retracted, extending the working stroke. When the height of the upper and lower horizontal bars of the scaffold 5 changes, the rope segment inside the sliding gripper 11 automatically adjusts its length to prevent the fall arrest rope 12 from becoming excessively tight or loose. This also prevents the second rope segment 122 from shortening its working stroke on the horizontal bar due to solely relying on its extension and retraction to adapt to changes in bar height.

[0051] The locking assembly 3 triggers emergency braking through a dual monitoring mechanism. The acceleration sensor 311 inside the sliding clamp 11 monitors the acceleration of the drive wheel in real time and identifies the instantaneous abnormal stretching of the fall arrest rope 12 (such as rapid rope release caused by a fall). The height sensor 312 on the connecting housing 22 dynamically monitors the change in the height of the worker off the ground and judges the abnormal falling speed. When the data of any sensor exceeds the safety threshold, the control unit 4 immediately activates the locking mechanism 321 to forcibly lock the drive wheel rotation, so that the fall arrest rope 12 is instantly tensioned and braked.

[0052] In addition, when the length of the second rope segment 122 is sufficient for the working stroke, the fall arrest rope 12 that can automatically pull the rope in the sliding clamp 11 can be set to a locked state to reduce the monitoring intensity of the dual monitoring mechanism, while avoiding the push of the fall arrest rope 12 due to the synchronous pulling of the first rope segment 121 and the second rope segment 122, which makes it easy to get knotted or tangled.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A self-locking fall arrestor for construction, characterized in that, include: The scaffold attachment assembly (1) includes a sliding clamp (11) that can be slidably clamped on the scaffold (5), a fall arrest rope (12) that passes through the sliding clamp (11), and a first rope segment drive wheel (13) that is rotatably connected to the sliding clamp (11). The user connection assembly (2) includes a safety belt (21), a connection housing (22) fixedly connected to the safety belt (21), and a second rope segment drive wheel (23) rotatably connected within the connection housing (22). The rotation of the first rope segment drive wheel (13) and the second rope segment drive wheel (23) drives the fall arrest rope (12) to extend or retract. The locking assembly (3) includes a monitoring module (31) and a locking module (32). The monitoring module (31) includes an acceleration sensor (311) located in the sliding clamp (11) and a height sensor (312) located on the connecting housing (22). The locking module (32) includes a locking mechanism (321) located in the sliding clamp (11) and the connecting housing (22) respectively and used to limit the rotation of the corresponding rope segment drive wheel.

2. The self-locking fall arrestor for construction according to claim 1, characterized in that: The sliding clamp (11) includes a first clamp (111) and a second clamp (112) that can be locked together, and a sliding channel (113) is formed between the first clamp (111) and the second clamp (112) for the scaffold (5) to pass through.

3. The self-locking fall arrestor for construction according to claim 1, characterized in that: The second rope segment drive wheel (23) includes a first pulley (231) and a second pulley (232) rotatably connected in the connecting housing (22), and the fall arrest rope (12) is sequentially wound around the first rope segment drive wheel (13), the first pulley (231) and the second pulley (232).

4. The self-locking fall arrestor for construction according to claim 3, characterized in that: The groove surfaces of the first rope segment drive wheel (13), the first pulley (231), and the second pulley (232) are all provided with a high-friction material layer.

5. The self-locking fall arrestor for construction according to claim 1, characterized in that: The acceleration sensor (311) is configured to monitor the acceleration of the first rope segment drive wheel (13) to determine the fall protection status, and the height sensor (312) is configured to monitor the height change of the user connection component (2) in real time to determine the fall protection status.

6. The self-locking fall arrestor for construction according to claim 3, characterized in that: It also includes a control unit (4), which determines the falling state based on the data from the speed sensor and the acceleration sensor (311) and triggers the locking module (32), and the control unit (4) is used to trigger the release after locking.

7. The self-locking fall arrestor for construction according to claim 6, characterized in that: The locking mechanism (321) includes a limiting tooth (3211) located at the ends of the first rope segment drive wheel (13) and the first pulley (231), and a limiting block (3212) that engages with the limiting tooth (3211).

8. The self-locking fall arrestor for construction according to claim 7, characterized in that: The limiting block (3212) is connected to an electromagnetic drive unit, which responds to the command of the control unit (4) to push the limiting block (3212) to engage with the limiting tooth (3211).

9. The self-locking fall arrestor for construction according to claim 3, characterized in that: The fall arrestor rope (12) has a wrap angle of 360° on the first rope segment drive wheel (13) and the first pulley (231), and a wrap angle of 90° on the second pulley (232).

10. The self-locking fall arrestor for construction according to claim 6, characterized in that: When the acceleration sensor (311) detects an abnormal stretching momentarily, and / or when the height sensor (312) detects and determines an abnormal falling speed, the rotation of the first rope segment drive wheel (13) and the first pulley (231) is simultaneously locked.

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