Flexible fall arrest device

Abstract

The utility model discloses a kind of flexible anti-falling devices, including main frame, lock frame, adjusting frame and guide wheel, main frame is provided with sliding rope cavity, in use process, rope is set from sliding rope cavity, lock frame is rotatably connected to main frame, one end of lock frame extends to sliding rope cavity, the rope of contactable sliding rope cavity, the other end of lock frame can be connected human body by connecting rope, when human body falls, lock frame can be driven to rotate momentarily, rope is compressed, so as to be locked by the friction between rope and lock frame and anti-falling device, so as to block human body further falling, realize anti-falling function, adjusting frame is rotatably connected to main frame, adjusting frame is rotatably connected to main frame, can provide orientation for rope, by the rotatable connection of adjusting frame and main frame, when the direction of rope changes, adjusting frame can be driven to rotate, so that guide wheel can be adaptively adjusted according to the direction of rope, so as to avoid anti-falling device jam in sliding process.

Description

Technical Field

[0001] This utility model relates to the field of fall arrestor technology, specifically to a flexible fall arrestor device. Background Technology

[0002] A fall arrestor (also known as a speed differential) is a safety device equipped with a rope (belt, wire rope) of extendable length, connected in series between the harness and the anchor point. In the event of a fall, it can brake due to the change in speed, quickly locking the safety rope and preventing the person from falling further.

[0003] The fall arrestor mainly consists of a main frame and a locking frame. The main frame has a sliding cavity for the rope to pass through, and a guide wheel is also provided on one side of the sliding cavity. The rope passes through the sliding cavity and is guided by the guide wheel. The locking frame is rotatably connected to the main frame, with one end extending to one side of the sliding cavity and the other end connected to the human body via a connecting rope. When the rope breaks accidentally, the locking frame rotates, squeezing the rope and locking the fall arrestor through friction with the rope, thereby preventing the human body from falling.

[0004] Since the guide wheels of fall arresters are usually in a fixed position, the fall arrester is prone to jamming during sliding, which can cause the fall arrester to lock unexpectedly. In such cases, manual unlocking is required, which causes inconvenience to the use of the fall arrester. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a flexible fall arrest device to solve the technical problem that fall arrest devices in the prior art are prone to accidental locking, which causes inconvenience to the use of fall arrest devices.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a flexible fall arrest device, comprising:

[0008] The main frame is provided with a rope sliding cavity for ropes to pass through;

[0009] A locking frame is rotatably connected to the main frame, with one end of the locking frame extending into the sliding rope cavity and the other end of the locking frame being used to connect to a human body;

[0010] An adjusting frame, rotatably connected to the main frame and located on one side of the sliding rope cavity; and

[0011] The guide wheel is rotatably connected to the adjustment frame and close to the sliding rope cavity.

[0012] In some embodiments, the main frame is provided with a first power supply column, the locking frame is sleeved on the first power supply column and rotatably connected to the first power supply column, and the flexible fall arrestor further includes a first torsion spring, the first torsion spring is sleeved on the first power supply column, and the two ends of the first torsion spring are respectively connected to the main frame and the locking frame, for preventing the locking frame from rotating.

[0013] In some embodiments, the lock frame is provided with a receiving groove at one end near the sliding rope cavity, the receiving groove being used to receive a rope.

[0014] In some embodiments, a through hole is provided at one end of the lock frame away from the sliding rope cavity, the through hole being used for threading a connecting rope.

[0015] In some embodiments, the main frame is further provided with a first rotation limiting port, and the lock frame passes through the rotation limiting port to limit the rotation range of the lock frame.

[0016] In some embodiments, the flexible fall arrestor further includes an elastic element, the two ends of which are respectively connected to the adjusting frame and the main frame, for preventing the adjusting frame from sliding away from the sliding rope cavity.

[0017] In some embodiments, the main frame is further provided with a second transfer column, the adjusting frame is rotatably connected to the second transfer column, the elastic element includes a second torsion spring, the second torsion spring is sleeved on the second transfer column, and the two ends of the second torsion spring are respectively connected to the adjusting frame and the main frame.

[0018] In some embodiments, the main frame is further provided with a limiting post, which is located on the side of the adjusting frame near the sliding rope cavity, and is used to prevent the adjusting frame from sliding toward the sliding rope cavity.

[0019] In some embodiments, the adjusting frame has a receiving opening on the side near the sliding rope cavity, and the limiting post is located in the receiving opening.

[0020] In some embodiments, the main frame is further provided with a second rotation limiting port, and the adjusting frame passes through the second rotation limiting port to limit the rotation range of the adjusting frame.

[0021] Compared with existing technologies, the flexible fall arrest device provided by this utility model consists of a main frame, a locking frame, an adjusting frame, and guide wheels. The main frame has a sliding rope cavity. During use, the rope passes through the sliding rope cavity. The locking frame is rotatably connected to the main frame, with one end extending into the sliding rope cavity and contacting the rope there. The other end of the locking frame can be connected to the human body via a connecting rope. When the human body falls, the locking frame rotates instantaneously, compressing the rope. This friction between the rope and the locking frame locks the fall arrest device, preventing further descent and achieving the fall arrest function. The adjusting frame is rotatably connected to the main frame and provides guidance for the rope. Through the rotatable connection between the adjusting frame and the main frame, when the direction of the rope changes, the adjusting frame rotates, allowing the guide wheels to adaptively adjust according to the direction of the rope. This prevents the fall arrest device from jamming during sliding and avoids accidental locking, making the use of the fall arrest device convenient. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the flexible fall arrestor provided in this embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the hidden cover of the flexible fall arrestor provided in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the locking frame of the flexible fall arrestor provided in this embodiment of the utility model.

[0025] Labels for each item in the figure:

[0026] 10—Main frame; 11—Sliding rope cavity; 12—Shell

[0027] 13—Cover body; 14—First feed column; 15—First rotation limit port

[0028] 16—Second supply and transfer column; 17—Limit column; 18—Second rotation limit port

[0029] 20—Locking bracket 21—Mounting slot 22—Receiving slot

[0030] 23—Perforation; 30—Adjustment bracket; 31—Reception opening

[0031] 40—Guide wheel; 50—Elastic element; 60—First torsion spring. 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To address the technical problem that existing fall arresters are prone to accidental locking, causing inconvenience in their use, this invention provides a flexible fall arrest device. By allowing the position of the guide wheel to adaptively adjust according to the direction of the rope, the fall arrester is prevented from jamming during its sliding along the rope, thus facilitating its use.

[0034] For the flexible fall arrest device provided in this embodiment of the utility model, please refer to [link / reference needed]. Figure 1-2 It includes a main frame 10, a locking frame 20, an adjusting frame 30, and a guide wheel 40. The main frame 10 is provided with a sliding rope cavity 11 for ropes to pass through. The locking frame 20 is rotatably connected to the main frame 10, with one end of the locking frame 20 extending into the sliding rope cavity 11 and the other end of the locking frame 20 for connecting a human body. The adjusting frame 30 is rotatably connected to the main frame 10 and located on one side of the sliding rope cavity 11. The guide wheel 40 is rotatably connected to the adjusting frame 30 and close to the sliding rope cavity 11.

[0035] Specifically, the flexible fall arrestor consists of a main frame 10, a locking frame 20, an adjusting frame 30, and a guide wheel 40. The main frame 10 has a sliding rope cavity 11. During use, the rope passes through the sliding rope cavity 11. The locking frame 20 is rotatably connected to the main frame 10. One end of the locking frame 20 extends into the sliding rope cavity 11 and can contact the rope in the sliding rope cavity 11. The other end of the locking frame 20 can be connected to the human body via a connecting rope. When the human body falls, it can cause the locking frame 20 to rotate instantaneously, compressing the rope, thereby locking the rope through friction between the rope and the locking frame 20. The anti-fall device is tightened to prevent the human body from falling further, thus achieving the anti-fall function. The adjusting frame 30 is rotatably connected to the main frame 10 and can provide guidance for the rope. Through the rotatable connection between the adjusting frame 30 and the main frame 10, when the direction of the rope changes, the adjusting frame 30 can be driven to rotate, so that the guide wheel 40 can be adaptively adjusted according to the direction of the rope. This can avoid jamming during the sliding of the anti-fall device, prevent the anti-fall device from locking unexpectedly, and facilitate the use of the anti-fall device.

[0036] In this embodiment, the adjustment frame 30 can rotate around the main frame 10, thereby making the fall arrest device more flexible.

[0037] In this embodiment, please refer to Figure 1-2 The main frame 10 includes a shell 12 and a cover 13. The cover 13 covers the shell 12 and forms a protective cavity with the shell 12.

[0038] In one embodiment, please refer to Figure 1-2The main frame 10 is equipped with a first feed-rotor post 14, and the locking frame 20 is sleeved on and rotatably connected to the first feed-rotor post 14. The flexible fall arrestor also includes a first torsion spring 60, which is sleeved on the first feed-rotor post 14. The two ends of the first torsion spring 60 are respectively connected to the main frame 10 and the locking frame 20 to prevent the locking frame 20 from rotating. Specifically, the locking frame 20 can be rotatably connected to the main frame 10 through the first feed-rotor post 14. The first torsion spring 60 can generate a certain elastic force, so that the end of the locking frame 20 near the sliding rope cavity 11 can always maintain contact with the rope without vibration or deviation, thereby ensuring that the locking frame 20 remains stable.

[0039] In this embodiment, please refer to Figure 2-3 The lock frame 20 is provided with a mounting groove 21. The first torsion spring 60 is installed in the mounting groove 21, with one end abutting against the side wall of the mounting groove 21 and the other end radially passing through the first power supply column 14.

[0040] In one embodiment, please refer to Figure 1-3 The locking frame 20 has a receiving groove 22 at one end near the sliding rope cavity 11, which is used to receive the rope. Specifically, the rope can be limited by the receiving groove 22, thereby improving the stability of the rope and increasing the contact area between the locking frame 20 and the rope, ensuring that the locking frame 20 can "lock" the rope by rotating.

[0041] In one embodiment, please refer to Figure 1-3 The end of the locking frame 20 away from the sliding rope cavity 11 is provided with a through hole 23 for the connecting rope to pass through. Specifically, the connecting rope can be passed through the through hole 23 and then connected to the human body, thus realizing the connection between the human body and the locking frame 20, providing convenience for the connection between the locking frame 20 and the human body.

[0042] In one embodiment, please refer to Figure 1-2 The main frame 10 is also provided with a first rotation limiting port 15, through which the lock frame 20 passes to limit the rotation range of the lock frame 20. Specifically, the first rotation limiting port 15 can limit the rotation range of the lock frame 20, thereby improving the stability of the lock frame 20.

[0043] In one embodiment, please refer to Figure 1-2 The flexible fall arrestor also includes an elastic element 50, with its two ends connected to the adjusting frame 30 and the main frame 10, respectively, to prevent the adjusting frame 30 from sliding away from the sliding rope cavity 11. Specifically, by preventing the adjusting frame 30 from sliding away from the sliding rope cavity 11, the elastic element 50 ensures that the guide wheel 40 remains in contact with the rope under the elastic force exerted by the elastic element 50 on the adjusting frame 30, and allows the adjusting frame 30 to rotate under the drive of the rope.

[0044] Understandably, the elastic element 50 can be a spring with its two ends abutting against the adjusting frame 30 and the main frame 10 respectively. Through the elastic force of the spring, the adjusting frame 30 is prevented from rotating away from the sliding rope cavity 11.

[0045] In one embodiment, please refer to Figure 1-2 The main frame 10 is also equipped with a second feed column 16. The adjusting frame 30 is rotatably connected to the second feed column 16. The elastic element 50 includes a second torsion spring, which is sleeved on the second feed column 16, and its two ends are respectively connected to the adjusting frame 30 and the main frame 10. Specifically, the second feed column 16 allows the adjusting frame 30 to rotate, realizing the rotatable connection between the adjusting frame 30 and the main frame 10. The second torsion spring generates an elastic force acting on the adjusting frame 30, ensuring that the guide wheel 40 always maintains contact with the rope, thus providing guidance for the rope.

[0046] In this embodiment, the adjustment frame 30 is provided with a rotating sleeve, one end of the second torsion spring abuts against the side wall of the mounting cavity, and the other end is connected to the rotating sleeve of the adjustment frame 30.

[0047] In one embodiment, please refer to Figure 1-2 The main frame 10 is also equipped with a limit post 17, which is located on the side of the adjusting frame 30 near the sliding rope cavity 11, and is used to prevent the adjusting frame 30 from sliding toward the sliding rope cavity 11. Specifically, by preventing the adjusting frame 30 from sliding toward the sliding rope cavity 11, the limit post 17 can prevent the guide wheel 40 from exerting excessive pressure on the rope, thereby hindering the fall arrest device from sliding along the rope.

[0048] In one embodiment, please refer to Figure 1-2 The adjusting frame 30 has a receiving port 31 on the side near the sliding rope cavity 11, and the limiting post 17 is located in the receiving port 31. Specifically, the receiving port 31 improves the stability of the adjusting frame 30 by accommodating the limiting post 17.

[0049] In one embodiment, please refer to Figure 1-2 The main frame 10 is also provided with a second rotation limit port 18, through which the adjusting frame 30 passes to limit the rotation range of the adjusting frame 30. Specifically, the second rotation limit port 18 ensures the stability of the fall arrestor structure by limiting the rotation range of the adjusting frame 30.

[0050] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A flexible fall arrest device, characterized in that, include: The main frame is provided with a rope sliding cavity for ropes to pass through; A locking frame is rotatably connected to the main frame, with one end of the locking frame extending into the sliding rope cavity and the other end of the locking frame being used to connect to a human body; An adjustment frame is rotatably connected to the main frame and located on one side of the sliding rope cavity; as well as The guide wheel is rotatably connected to the adjustment frame and close to the sliding rope cavity.

2. The flexible fall arrestor according to claim 1, characterized in that, The main frame is provided with a first rotating column, and the locking frame is sleeved on the first rotating column and rotatably connected to the first rotating column. The flexible fall arrestor also includes a first torsion spring, which is sleeved on the first rotating column. The two ends of the first torsion spring are respectively connected to the main frame and the locking frame to prevent the locking frame from rotating.

3. The flexible arrestment device of claim 1, wherein, The locking frame has a receiving groove at one end near the sliding rope cavity, which is used to receive the rope.

4. The flexible arrestment device of claim 1, wherein, The lock frame has a through hole at the end away from the sliding rope cavity, and the through hole is used for the connection rope to pass through.

5. The flexible arrestment device of claim 1, wherein, The main frame is also provided with a first rotation limiting port, through which the lock frame passes to limit the rotation range of the lock frame.

6. The flexible arrestment device of claim 1, wherein, It also includes an elastic element, the two ends of which are connected to the adjusting frame and the main frame, respectively, to prevent the adjusting frame from sliding away from the sliding rope cavity.

7. The flexible arrestment device of claim 6, wherein, The main frame is also provided with a second feed column, the adjusting frame is rotatably connected to the second feed column, the elastic element includes a second torsion spring, the second torsion spring is sleeved on the second feed column, and the two ends of the second torsion spring are respectively connected to the adjusting frame and the main frame.

8. The flexible arrestment device of claim 1, wherein, The main frame is also provided with a limiting post, which is located on the side of the adjusting frame near the sliding rope cavity, and is used to prevent the adjusting frame from sliding toward the sliding rope cavity.

9. The flexible arrestment device of claim 8, wherein, The adjusting frame has a receiving opening on the side near the sliding rope cavity, and the limiting post is located in the receiving opening.

10. The flexible arrestment device of claim 1, wherein, The main frame is also provided with a second rotation limit port, through which the adjustment frame passes to limit the rotation range of the adjustment frame.

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