C-shaped hook falling protection device
By designing a C-hook fall protection device, which uses drive components and limit components to support the C-hook, the problem of C-hook swaying and falling during wire production is solved, ensuring the safety of operators.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU SHAGANG STEEL CO LTD
- Filing Date
- 2026-03-23
- Publication Date
- 2026-05-08
AI Technical Summary
During wire production, C-hooks are prone to swaying during ascent and descent, which can cause them to tilt or fall, posing a safety hazard and making it difficult for operators to react and handle the situation quickly.
A C-hook fall protection device was designed, including a C-hook, a mounting component, a driving component, and a limiting component. The driving component drives the limiting component to move into the moving space to support the C-hook, thereby supporting and limiting the C-hook and preventing it from falling.
This effectively prevents the C-hook from falling, ensures the safety of operators, and improves the support and limiting stability and reliability of the C-hook.
Smart Images
Figure CN122000133A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wire manufacturing technology, and in particular to a C-hook fall protection device. Background Technology
[0002] During wire production, the wire transported by C-hooks needs to be bagged in the bagging area. When the conveyor belt moves the C-hooks to the bagging area, the wire hanging on the C-hooks is lifted by a bracket at the bottom of the hook, ensuring the inner coil of the wire is higher than the hook. This facilitates bagging by the operator. After bagging, the bracket lowers, placing the wire back onto the C-hooks. This process of raising and lowering the wire causes the C-hooks to sway, potentially causing them to tilt or even fall off the conveyor belt. Operators positioned below the C-hooks may find it difficult to react quickly and take appropriate action, creating a significant safety hazard.
[0003] Therefore, there is an urgent need for a C-hook fall protection device to solve the above problems. Summary of the Invention
[0004] The purpose of this invention is to provide a C-hook fall protection device to support a detached C-hook, thereby limiting and preventing it from falling and ensuring the safety of the operator.
[0005] To achieve this objective, the present invention adopts the following technical solution: A C-hook fall protection device, comprising: C-shaped hook, the C-shaped hook being used for transmitting wires; The mounting assembly includes a first mounting member and a second mounting member arranged at relative intervals, with a moving space formed between the first mounting member and the second mounting member, the moving space being located on the moving path of the C-shaped hook; A driving component is disposed on the first mounting component; A limiting component is provided, which is connected to the output end of the driving component. The driving component is configured to drive the limiting component to move so that the limiting component moves into the moving space to support the C-shaped hook.
[0006] As an optional solution, the limiting component includes: The connecting frame is connected to the output end of the drive assembly for transmission. Two limiting rods are arranged at intervals, and both limiting rods are connected to the connecting frame. The two limiting rods are configured to jointly support the C-shaped hook.
[0007] As an optional solution, the driving component includes: A rotary drive component is disposed on the first mounting component; A lead screw extends along the moving direction of the limiting assembly. One end of the lead screw is rotatably connected to the first mounting member, and the other end of the lead screw is drively connected to the output end of the rotary drive member. The rotary drive member is configured to drive the lead screw to rotate relative to the first mounting member, and the lead screw is threadedly connected to the connecting bracket.
[0008] As an optional solution, the first mounting component includes a first mounting frame and two first rotating blocks, the two first rotating blocks are arranged at intervals, and each first rotating block is rotatably connected to the first mounting frame, and each first rotating block is provided with a first elliptical perforation. The limiting rod is an elliptical rod. The first end of the elliptical rod is rotatably connected to the connecting frame, and the second end of the elliptical rod can pass through the corresponding first elliptical perforation and move into the moving space. The elliptical rod has a receiving position and a limiting position relative to the connecting frame. When both elliptical rods are in the receiving position, the major diameters of the two elliptical rods are arranged in a figure-eight shape. When both elliptical rods are in the limiting position, the minor diameters of the two elliptical rods extend vertically and are parallel to each other. When the C-shaped hook falls, it presses against the two elliptical rods, causing them to rotate from the receiving position to the limiting position.
[0009] As an optional solution, the C-hook is provided with a insertion hole, and the C-hook fall protection device further includes: The transmission assembly includes a first transmission gear and a first transmission rack. The first transmission gear is fixedly disposed on the outer periphery of the elliptical rod, and the first transmission rack is slidably connected to the first mounting bracket. When the elliptical rod moves into the moving space, the first transmission gear meshes with the first transmission rack. A locking assembly includes a locking member and a driving member. The locking member is threadedly connected to the first transmission rack. The first transmission rack can drive the locking member to move relative to the first mounting bracket to a position directly opposite the socket. The driving member is configured to drive the locking member to rotate relative to the first transmission rack so that the locking member moves toward the socket and is inserted into the socket.
[0010] As an optional solution, the first transmission rack and the first mounting bracket are slidably connected along the vertical direction, and there is a sliding damping force between the first transmission rack and the first mounting bracket, and the sliding damping force is greater than the weight of the first transmission rack.
[0011] As an optional solution, the C-hook fall protection device further includes a fixing component, which is fixedly connected to the first mounting bracket. The fixing component has an open slot, and the locking element includes a connected screw and an oval head. The screw is threadedly connected to the first transmission rack, and the screw can be inserted into the insertion hole. The minor diameter of the elliptical head is matched with the width of the open slot, and the major diameter of the elliptical head is greater than the width of the open slot. When the elliptical rod is in the receiving position, the elliptical head is engaged in the open slot. When the elliptical rod is in the limiting position, the first transmission rack drives the elliptical head to disengage from the open slot. The drive element includes an elastic element configured to always have a tendency to drive the locking element to rotate relative to the first drive rack.
[0012] As an optional solution, the elastic element is a first torsion spring, which is sleeved on the screw. One torsion arm of the first torsion spring is connected to the first transmission rack, and the other torsion arm of the first torsion spring is connected to the elliptical head.
[0013] As an optional solution, the first mounting component further includes a second torsion spring, one torsion arm of which is connected to the first mounting bracket, and the other torsion arm of which is connected to the corresponding first rotating block. The second torsion spring is configured to always drive the corresponding first rotating block to rotate to the initial position. When the first rotating block is in the initial position, the elliptical rod passing through the first rotating block is in the receiving position.
[0014] As an optional solution, the C-hook includes: The connecting block, wherein the limiting component can abut against the bottom end of the connecting block; The C-shaped hook body is fixedly connected to the connecting block, and the C-shaped hook body is used to hang the wire.
[0015] The beneficial effects of this invention are: The C-hook fall protection device provided by this invention includes a C-hook, a mounting assembly, a driving assembly, and a limiting assembly. The C-hook is used to transport wire. The mounting assembly includes a first mounting member and a second mounting member arranged at relative intervals, forming a moving space located on the moving path of the C-hook. The driving assembly is disposed on the first mounting member. The limiting assembly is tractively connected to the output end of the driving assembly. The driving assembly can drive the limiting assembly to move, so that the limiting assembly moves into the moving space to support the C-hook. When the wire transported by the C-hook is being bagged, the C-hook is positioned within the moving space between the first and second mounting members. If the C-hook detaches from the wire during the bagging operation, the driving assembly can drive the limiting assembly to move, so that the limiting assembly moves into the moving space to support the C-hook, thereby supporting and limiting the C-hook, preventing it from falling, and ensuring the safety of the operator. Attached Figure Description
[0016] Figure 1 This is a first structural schematic diagram of the C-type hook fall protection device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the second structure of the C-type hook fall protection device provided in an embodiment of the present invention; Figure 3 yes Figure 1 Enlarged view of the structure at point A in the middle; Figure 4 yes Figure 2 Enlarged view of the structure at point B.
[0017] In the picture: 1. C-hook; 11. Connecting block; 12. C-hook body; 121. Insertion hole; 2. Mounting components; 21. First mounting component; 211. First mounting bracket; 212. First rotating block; 2121. First elliptical perforation; 22. Second mounting component; 221. Second mounting bracket; 222. Second rotating block; 2221. Second elliptical perforation; 23. Movement space; 3. Drive assembly; 31. Rotary drive component; 32. Lead screw; 4. Limiting component; 41. Connecting bracket; 42. Limiting rod; 51. First transmission gear; 52. First transmission rack; 53. Second transmission gear; 54. Second transmission rack; 6. Locking assembly; 61. Locking element; 611. Screw; 612. Elliptical head; 62. Elastic element; 7. Fixing components; 71. Open slot. Detailed Implementation
[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0020] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0022] During wire production, the wire transported by C-hooks needs to be bagged in the bagging area. When the conveyor belt moves the C-hooks to the bagging area, the wire hanging on the C-hooks is lifted by a bracket at the bottom of the hook, ensuring the inner coil of the wire is higher than the hook. This facilitates bagging by the operator. After bagging, the bracket lowers, placing the wire back onto the C-hooks. This process of raising and lowering the wire causes the C-hooks to sway, potentially causing them to tilt or even fall off the conveyor belt. Operators positioned below the C-hooks may find it difficult to react quickly and take appropriate action, creating a significant safety hazard.
[0023] To solve the above problems, such as Figure 1 and Figure 2As shown, this embodiment provides a C-hook fall protection device, which includes a C-hook 1, a mounting assembly 2, a driving assembly 3, and a limiting assembly 4. The C-hook 1 is used to transmit wires. The mounting assembly 2 includes a first mounting member 21 and a second mounting member 22 arranged at relatively intervals, forming a moving space 23 between the first mounting member 21 and the second mounting member 22. The moving space 23 is located on the moving path of the C-hook 1. The driving assembly 3 is disposed on the first mounting member 21. The limiting assembly 4 is connected to the output end of the driving assembly 3. The driving assembly 3 is configured to drive the limiting assembly 4 to move so that the limiting assembly 4 moves into the moving space 23 to support the C-hook 1. The C-hook fall protection device provided in this embodiment, when bagging the wire transported by the C-hook 1, is positioned within the moving space 23 between the first mounting component 21 and the second mounting component 22. If the C-hook 1 detaches from the operating line during the bagging operation, the drive component 3 can drive the limiting component 4 to move, placing it within the moving space 23 to support the C-hook 1. This supports and limits the C-hook 1, preventing it from falling and ensuring the safety of the operator. It should be noted that in this embodiment, both the first mounting component 21 and the second mounting component 22 are fixed to a wall or other stable base via a fixing bracket.
[0024] In this embodiment, as Figure 1 and Figure 2 As shown, the C-hook 1 includes a connecting block 11 and a C-hook body 12. The connecting block 11 is used to connect with the running line. The limiting component 4 can abut against the bottom end of the connecting block 11 to support the entire C-hook 1. The C-hook body 12 is C-shaped and is fixedly connected to the connecting block 11. The C-hook body 12 is used to hang the wire.
[0025] Optionally, such as Figure 1 and Figure 2 As shown, the limiting component 4 includes a connecting frame 41 and two limiting rods 42. The connecting frame 41 is connected to the output end of the driving component 3. The two limiting rods 42 are arranged at intervals and are both connected to the connecting frame 41. The two limiting rods 42 are configured to jointly support the C-hook 1. The driving component 3 drives the connecting frame 41 to move, thereby synchronously driving the two limiting rods 42 to move, so that the two limiting rods 42 move synchronously into the moving space 23 to support the C-hook 1, effectively improving the stability and reliability of supporting and limiting the C-hook 1. Optionally, in this embodiment, the limiting rods 42 are solid rigid rods to ensure the structural strength of the limiting rods 42. In this embodiment, both limiting rods 42 can abut against the bottom end of the connecting block 11.
[0026] In this embodiment, as Figure 1As shown, the drive assembly 3 includes a rotary drive component 31 and a lead screw 32. The rotary drive component 31 is disposed on the first mounting component 21, and the lead screw 32 extends along the moving direction of the limiting component 4. One end of the lead screw 32 is rotatably connected to the first mounting component 21, and the other end of the lead screw 32 is drively connected to the output end of the rotary drive component 31. The rotary drive component 31 is configured to drive the lead screw 32 to rotate relative to the first mounting component 21, and the lead screw 32 is threadedly connected to the connecting frame 41. The rotary drive component 31 drives the lead screw 32 to rotate, thereby causing the connecting frame 41 to move along the lead screw 32. Optionally, the rotary drive component 31 is a motor. In other embodiments, the drive assembly 3 is a drive cylinder, which is mounted on the first mounting component 21. Each limiting rod 42 is correspondingly provided with a drive cylinder, and the two drive cylinders extend and retract synchronously, thereby synchronously driving the two limiting rods 42 to move.
[0027] In this embodiment, as Figure 2 As shown, the first mounting component 21 includes a first mounting frame 211 and two first rotating blocks 212. The two first rotating blocks 212 are arranged at intervals, and each first rotating block 212 is rotatably connected to the first mounting frame 211. Each first rotating block 212 has a first elliptical through hole 2121. The limiting rod 42 is an elliptical rod. The first end of the elliptical rod is rotatably connected to the connecting frame 41. The second end of the elliptical rod can pass through the corresponding first elliptical through hole 2121 and move into the moving space 23. The elliptical rod has a receiving position and a limiting position relative to the connecting frame 41. When both elliptical rods are in the receiving position, the major diameters of the two elliptical rods are arranged in a figure-eight shape. When both elliptical rods are in the limiting position, the minor diameters of the two elliptical rods extend vertically and are parallel to each other. When the C-shaped hook 1 falls, it presses against the two elliptical rods and rotates them from the receiving position to the limiting position. By allowing the elliptical rod to pass through the first elliptical perforation 2121, the support effect of the elliptical rod is improved, ensuring the stability of the elliptical rod in supporting the C-hook 1. Furthermore, by having the elliptical rod initially receive the C-hook 1 in a receiving position, and then rotate to a limiting position under the pressure of the C-hook 1, the elliptical rod stably supports the C-hook 1 at the limiting position, providing a certain degree of buffering during load-bearing and preventing excessive impact force from the C-hook 1 from directly acting on the elliptical rod. It should be noted that because the outer contour of the elliptical rod matches the shape of the first elliptical perforation 2121, the elliptical rod passing through the first elliptical perforation 2121 can drive the first rotating block 212 to rotate relative to the first mounting frame 211 when rotating between the receiving and limiting positions. In this embodiment, a lead screw 32 is rotatably connected to the first mounting frame 211, and a rotation drive 31 is disposed on the first mounting frame 211.
[0028] In this embodiment, the first mounting component 21 also includes a second torsion spring (not shown in the figure). Each first rotating block 212 is correspondingly provided with a second torsion spring. One torsion arm of the second torsion spring is connected to the first mounting bracket 211, and the other torsion arm is connected to the corresponding first rotating block 212. The second torsion spring always has the capability to drive the corresponding first rotating block 212 to rotate to its initial position. When the first rotating block 212 is in its initial position, the elliptical rod passing through it is in a receiving position. By providing the second torsion spring, the first rotating block 212 is always in its initial position when not subjected to the rotational force of the elliptical rod, ensuring that the elliptical rod is accurately inserted into the first elliptical through-hole 2121 in the first rotating block 212 in the receiving position. It should be noted that when the elliptical rod rotates to the limit position under the pressure of the C-shaped hook 1, the two elliptical rods cannot continue to rotate under the action of the second torsion spring, thus ensuring the stability of the elliptical rod supporting the C-shaped hook 1.
[0029] In this embodiment, as Figure 1 and Figure 3 As shown, the C-hook body 12 is provided with an insertion hole 121. The C-hook fall protection device also includes a transmission assembly and a locking assembly 6. The transmission assembly includes a first transmission gear 51 and a first transmission rack 52. The first transmission gear 51 is fixedly disposed on the outer periphery of the elliptical rod, and the first transmission rack 52 is slidably connected to the first mounting bracket 211. When the elliptical rod moves into the moving space 23, the first transmission gear 51 meshes with the first transmission rack 52. The locking assembly 6 includes a locking member 61 and a driving member. The locking member 61 is threadedly connected to the first transmission rack 52. The first transmission rack 52 can drive the locking member 61 to move relative to the first mounting bracket 211 to a position directly opposite the insertion hole 121. The driving member is configured to drive the locking member 61 to rotate relative to the first transmission rack 52, so that the locking member 61 moves toward the insertion hole 121 and is inserted into the insertion hole 121. When the C-hook 1 falls, it presses against the two elliptical rods as they rotate from the receiving position to the limiting position. During this process, the elliptical rods can drive the corresponding first transmission gear 51 to rotate. At this time, the first transmission gear 51 meshes with the first transmission rack 52, causing the first transmission rack 52 to drive the locking member 61 to move to the position directly opposite the insertion hole 121. At this time, the driving member drives the locking member 61 to rotate relative to the first transmission rack 52, causing the locking member 61 to move toward the insertion hole 121 and insert into the insertion hole 121, so that the locking member 61 locks the C-hook body 12, further improving the reliability of limiting the C-hook 1 and preventing the C-hook 1 from falling.
[0030] In this embodiment, the first transmission rack 52 and the first mounting bracket 211 are slidably connected in the vertical direction. There is a sliding damping force between the first transmission rack 52 and the first mounting bracket 211, and this sliding damping force is greater than the weight of the first transmission rack 52. This ensures that the first transmission rack 52 will not move relative to the first mounting bracket 211 under its own weight when it is not subjected to the meshing transmission force of the first transmission gear 51. The sliding damping force between the first transmission rack 52 and the first mounting bracket 211 can be formed by an elastic element or a damping component. Since the specific structure for forming the sliding damping force is prior art, it will not be described in detail here.
[0031] In this embodiment, as Figure 1 and Figure 3 As shown, the C-hook fall protection device also includes a fixing component 7, which is fixedly connected to the first mounting bracket 211. The fixing component 7 has an open slot 71. The locking member 61 includes a connected screw 611 and an elliptical head 612. The screw 611 is threadedly connected to the first transmission rack 52. The screw 611 can be inserted into the insertion hole 121. The minor diameter of the elliptical head 612 is adapted to the width of the open slot 71, and the major diameter of the elliptical head 612 is greater than the width of the open slot 71. When the elliptical rod is in the receiving position, the elliptical head 612 is engaged in the open slot 71. When the elliptical rod is in the limiting position, the first transmission rack 52 drives the elliptical head 612 to disengage from the open slot 71. The driving member includes an elastic member 62, which is configured to always have a tendency to drive the locking member 61 to rotate relative to the first transmission rack 52. When the elliptical rod is in the receiving position, the elliptical head 612 is engaged in the open slot 71, and the locking member 61 cannot rotate relative to the first transmission rack 52. When the elliptical rod rotates from the receiving position to the limiting position under the pressure of the C-hook 1, the first transmission rack 52 drives the locking member 61 to move relative to the open slot 71, causing the elliptical head 612 to disengage from the open slot 71. At this time, the locking member 61 rotates relative to the first transmission rack 52 under the elastic force of the elastic member 62, causing the screw 611 to move toward the insertion hole 121 and be inserted into the insertion hole 121. With the above configuration, there is no need for an additional power source to drive the locking member 61 to rotate; the rotation is achieved by the elastic force of the elastic member 62, resulting in an ingenious structural design. Optionally, in this embodiment, the fixing component 7 is a fixing plate. In other embodiments, the driving component is a motor.
[0032] Optionally, in this embodiment, the elastic element 62 is a first torsion spring, which is sleeved on the screw 611. One torsion arm of the first torsion spring is connected to the first transmission rack 52, and the other torsion arm of the first torsion spring is connected to the elliptical head 612.
[0033] In this embodiment, as Figure 1As shown, the second mounting component 22 includes a second mounting frame 221 and two second rotating blocks 222. The two second rotating blocks 222 are arranged at intervals, and each second rotating block 222 is rotatably connected to the second mounting frame 221. Each second rotating block 222 has a second elliptical through hole 2221. The second end of the elliptical rod can pass through the corresponding first elliptical through hole 2121 and the moving space 23 in sequence and extend into the second elliptical through hole 2221, which further improves the support effect on the elliptical rod.
[0034] In this embodiment, the second mounting component 22 further includes a third torsion spring (not shown in the figure). Each second rotating block 222 is correspondingly provided with a third torsion spring. One torsion arm of the third torsion spring is connected to the second mounting bracket 221, and the other torsion arm is connected to the corresponding second rotating block 222. The third torsion spring always has the capability to drive the corresponding second rotating block 222 to rotate to its initial position. When the second rotating block 222 is in its initial position, the elliptical rod passing through it is in a receiving position. By providing the third torsion spring, the second rotating block 222 is always in its initial position when not subjected to the rotational force of the elliptical rod, ensuring that the elliptical rod is accurately inserted into the second elliptical through-hole 2221 in the second rotating block 222 in the receiving position.
[0035] In this embodiment, as Figure 2 and Figure 4 As shown, the transmission assembly also includes a second transmission gear 53 and a second transmission rack 54. The second transmission gear 53 is coaxially fixed with the second rotating block 222, and the second transmission rack 54 is slidably connected to the second mounting bracket 221. The second transmission gear 53 and the second transmission rack 54 mesh with each other. A fixing component 7 is also fixedly installed on the second mounting bracket 221, and a locking component 6 is also provided at the second transmission rack 54. When the elliptical rod passing through the second elliptical hole 2221 rotates from the receiving position to the limiting position, the elliptical rod can synchronously drive the second rotating block 222 and the second transmission gear 53 to rotate, so that the second transmission rack 54 drives the locking member 61 on the second transmission rack 54 to move relative to the open slot 71, so that the elliptical head 612 disengages from the open slot 71. At this time, the locking member 61 on the second transmission rack 54 rotates relative to the second transmission rack 54 under the action of the elastic force of the elastic member 62, so that the screw 611 moves toward the insertion hole 121 and is inserted into the insertion hole 121. The above configuration further ensures the stability of the support for the C-hook 1. It should be noted that the connection method between the second transmission rack 54 and the second mounting bracket 221 is basically the same as the connection method between the first transmission rack 52 and the first mounting bracket 211, and will not be described again here.
[0036] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A C-hook fall protection device, characterized in that, include: C-hook (1), the C-hook (1) is used for transmitting wire; The mounting assembly (2) includes a first mounting member (21) and a second mounting member (22) arranged at relative intervals, with a moving space (23) formed between the first mounting member (21) and the second mounting member (22), and the moving space (23) is located on the moving path of the C-hook (1); Drive component (3), the drive component (3) is disposed on the first mounting component (21); The limiting component (4) is connected to the output end of the driving component (3). The driving component (3) is configured to drive the limiting component (4) to move so that the limiting component (4) moves into the moving space (23) to support the C-hook (1).
2. The C-hook fall protection device according to claim 1, characterized in that, The limiting component (4) includes: The connecting frame (41) is connected to the output end of the drive assembly (3) in a transmission manner; Two limiting rods (42) are arranged at intervals and both limiting rods (42) are connected to the connecting frame (41). The two limiting rods (42) are configured to jointly support the C-shaped hook (1).
3. The C-hook fall protection device according to claim 2, characterized in that, The driving component (3) includes: A rotary drive (31) is disposed on the first mounting member (21); A lead screw (32) extends along the moving direction of the limiting component (4). One end of the lead screw (32) is rotatably connected to the first mounting member (21), and the other end of the lead screw (32) is connected to the output end of the rotary drive member (31). The rotary drive member (31) is configured to drive the lead screw (32) to rotate relative to the first mounting member (21). The lead screw (32) is threadedly connected to the connecting frame (41).
4. The C-hook fall protection device according to claim 2, characterized in that, The first mounting component (21) includes a first mounting bracket (211) and two first rotating blocks (212). The two first rotating blocks (212) are arranged at intervals, and each first rotating block (212) is rotatably connected to the first mounting bracket (211). Each first rotating block (212) has a first elliptical through hole (2121). The limiting rod (42) is an elliptical rod. The first end of the elliptical rod is rotatably connected to the connecting frame (41). The second end of the elliptical rod can pass through the corresponding first elliptical perforation (2121) and move into the moving space (23). The elliptical rod has a receiving position and a limiting position relative to the connecting frame (41). When both elliptical rods are in the receiving position, the major diameters of the two elliptical rods are arranged in a figure-eight shape. When both elliptical rods are in the limiting position, the minor diameters of the two elliptical rods extend vertically and are parallel to each other. When the C-shaped hook (1) falls, it presses against the two elliptical rods and rotates from the receiving position to the limiting position.
5. The C-hook fall protection device according to claim 4, characterized in that, The C-hook (1) is provided with a socket (121), and the C-hook fall protection device further includes: The transmission assembly includes a first transmission gear (51) and a first transmission rack (52). The first transmission gear (51) is fixedly disposed on the outer periphery of the elliptical rod, and the first transmission rack (52) is slidably connected to the first mounting bracket (211). When the elliptical rod moves into the moving space (23), the first transmission gear (51) meshes with the first transmission rack (52). The locking assembly (6) includes a locking member (61) and a driving member. The locking member (61) is threadedly connected to the first transmission rack (52). The first transmission rack (52) can drive the locking member (61) to move relative to the first mounting bracket (211) to a position directly opposite the socket (121). The driving member is configured to drive the locking member (61) to rotate relative to the first transmission rack (52) so that the locking member (61) moves toward the socket (121) and is inserted into the socket (121).
6. The C-hook fall protection device according to claim 5, characterized in that, The first transmission rack (52) is slidably connected to the first mounting bracket (211) in the vertical direction. There is a sliding damping force between the first transmission rack (52) and the first mounting bracket (211), and the sliding damping force is greater than the weight of the first transmission rack (52).
7. The C-hook fall protection device according to claim 5, characterized in that, The C-hook fall protection device also includes a fixing component (7), which is fixedly connected to the first mounting bracket (211). The fixing component (7) has an open slot (71). The locking component (61) includes a connected screw (611) and an elliptical head (612). The screw (611) is threadedly connected to the first transmission rack (52). The screw (611) can be inserted into the insertion hole (121). The minor diameter of the elliptical head (612) is matched with the width of the open slot (71), and the major diameter of the elliptical head (612) is greater than the width of the open slot (71). When the elliptical rod is in the receiving position, the elliptical head (612) is engaged in the open slot (71). When the elliptical rod is in the limiting position, the first transmission rack (52) drives the elliptical head (612) to disengage from the open slot (71). The drive element includes an elastic element (62) configured to always have a tendency to drive the locking element (61) to rotate relative to the first transmission rack (52).
8. The C-hook fall protection device according to claim 7, characterized in that, The elastic element (62) is a first torsion spring, which is sleeved on the screw (611). One torsion arm of the first torsion spring is connected to the first transmission rack (52), and the other torsion arm of the first torsion spring is connected to the elliptical head (612).
9. The C-hook fall protection device according to any one of claims 4 to 8, characterized in that, The first mounting component (21) further includes a second torsion spring, one of the torsion arms of the second torsion spring being connected to the first mounting bracket (211), and the other torsion arm of the second torsion spring being connected to the corresponding first rotating block (212). The second torsion spring is configured to always have a state of driving the corresponding first rotating block (212) to rotate to an initial position. When the first rotating block (212) is in the initial position, the elliptical rod passing through the first rotating block (212) is in the receiving position.
10. The C-hook fall protection device according to any one of claims 1 to 8, characterized in that, The C-type hook (1) includes: The connecting block (11) is such that the limiting component (4) can abut against the bottom end of the connecting block (11); The C-shaped hook body (12) is fixedly connected to the connecting block (11), and the C-shaped hook body (12) is used to hang the wire.