Novel safety net tensioning device

Abstract

The utility model relates to a novel safety net tensioning device. The pipe clamp is connected with the reel mounting frame and provided with the reel, the traction rod is pulled by winding the traction rope through the reel, the traction rod is connected with the safety net hook, so that the safety net can be pulled and tensioned, the reel is more convenient to wind through the ratchet wheel and pawl one-way rotation locking mechanism matched with the reel, and the safety net is more convenient to use. Reverse rotation and loosening in the winding process of the reel are avoided, one-way rotating winding of the reel on the traction rope is effectively guaranteed, the traction rod can be hooked on the safety net after penetrating through the mesh holes of the safety net, stable hooking connection with the safety net is guaranteed, and installation is fast and convenient. The safety net tensioning device is small and exquisite in structure, convenient to operate and stable and reliable in tensioning, and can be conveniently installed on a scaffold steel pipe to tension a safety net.

Description

Technical Field

[0001] This utility model relates to the field of safety net installation technology, specifically a novel safety net tensioning device. Background Technology

[0002] Construction safety nets are used on various construction sites, especially high-rise buildings. They allow for fully enclosed construction, effectively preventing injuries from falling objects and people, preventing fires caused by welding sparks, reducing noise and dust pollution, and achieving civilized construction, environmental protection, and urban beautification. Currently, when safety nets are installed on the outside of construction scaffolding, they are usually tied to the steel pipes of the scaffolding by passing wire or steel wire through the metal sleeve on the surface of the safety net. However, the unfolded safety net has a large area, making it difficult to tighten and fix it during the tying process. After the installation is completed, many places are relatively loose and difficult to tighten, affecting the protective effect of the safety net and making it less aesthetically pleasing. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model discloses a novel safety net tensioning device. The technical solution adopted is that a roller mounting frame is fixedly connected to the side of the pipe clamp used for fixing and connecting to the steel pipe of the scaffold. A roller is rotatably mounted on the roller mounting frame. A ratchet is fixedly connected to the middle of the roller near the inner side of the side plate of the roller mounting frame. A square shaft head is fixedly connected to one end of the roller. A brake pawl is installed on the roller mounting frame at the position corresponding to the ratchet. An arc-shaped groove is opened on the side of the roller mounting frame at the position corresponding to the brake pawl. The brake pawl and the ratchet are engaged. The brake pawl locks the roller by rotating it in the opposite direction, so that the roller can rotate in one direction to facilitate the winding of the pull rope. The pull rope is wound on the roller. A pull rod is fixedly connected to the free end of the pull rope. The pull rod passes through the mesh of the safety net and is connected to the safety net hook, so as to realize the pulling of the safety net by the pull rope and the pull rod.

[0004] In a preferred embodiment of this utility model, the braking pawl includes a rotating mounting seat fixedly connected to the reel mounting frame. A pawl plate is rotatably mounted on the rotating mounting seat via a torsion spring shaft. Under the elastic force of the torsion spring shaft, the pawl plate elastically presses against a limiting plate on the top of the rotating mounting seat. The pawl plate is engaged with the ratchet, thereby blocking the reverse rotation of the ratchet. The forward rotation of the ratchet will cause the pawl plate to rotate on the torsion spring shaft, thus not obstructing the rotation of the ratchet. A connecting rod is fixedly connected to the side of the pawl plate. The connecting rod slides through the arc-shaped groove and is fixedly connected to a deflector plate at its end. The deflector plate is located on the outer side of the end of the reel mounting frame. The center of the arc-shaped groove coincides with the axis of the torsion spring shaft. The deflector plate can rotate the pawl plate by a certain angle, thereby disengaging it from the ratchet and allowing the reel to rotate in the opposite direction, facilitating the release of the wound-up pulling rope.

[0005] As a preferred embodiment of this utility model, the pulling rope is made of steel wire rope to ensure pulling strength and prevent it from being broken or damaged by oxidation.

[0006] As a preferred embodiment of this utility model, a slot is provided on the circumferential surface of the pulling rod on the same side as the pulling rope. The slot allows the rod to be hooked onto the safety net, preventing it from sliding on the safety net and ensuring a stable connection.

[0007] The beneficial effects of this utility model are as follows: This utility model connects a reel mounting bracket to a pipe clamp and installs a reel. The reel winds up a pulling rope to pull a tensioning rod, which is then connected to a hook on the safety net. This allows for tensioning of the safety net. The ratchet and pawl locking mechanism, designed to work in conjunction with the reel, makes rewinding the reel more convenient and prevents reverse unwinding during the rewinding process. This effectively ensures unidirectional rotation of the reel towards the pulling rope. The tensioning rod can be hooked onto the safety net after passing through the mesh, ensuring a stable connection and quick installation. This device has a compact structure, making it easy to install on scaffolding steel pipes for tensioning the safety net. It is convenient to operate and provides stable and reliable tensioning. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0009] Figure 2 This is an enlarged view of the brake pawl part of this utility model;

[0010] Figure 3 This is a partial enlarged side view of the scroll mounting bracket of this utility model;

[0011] Figure 4 This is a schematic diagram of the ratchet plate structure of this utility model;

[0012] Figure 5 This is a schematic diagram of the tension rod structure of this utility model.

[0013] In the diagram: 1. Pipe clamp, 2. Reel mounting bracket, 201. Arc-shaped groove, 3. Reel, 301. Ratchet, 302. Square shaft head, 4. Brake pawl, 401. Rotary mounting base, 402. Torsion spring shaft, 403. Limiting plate, 404. Pawl plate, 4041. Connecting rod, 4042. Actuating plate, 5. Pulling rope, 6. Pulling bar, 601. Slot. Detailed Implementation

[0014] Example 1

[0015] like Figures 1 to 5 As shown, this utility model discloses a novel safety net tensioning device. A roller mounting frame 2 is fixedly connected to the side of a pipe clamp 1 used for fixing and connecting to a steel pipe of scaffolding. A roller 3 is rotatably mounted on the roller mounting frame 2. A pulling rope 5 is wound on the roller 3. A ratchet 301 is fixedly connected to the middle of the roller 3 near the inner side of the side plate of the roller mounting frame 2. A square shaft head 302 is fixedly connected to one end of the roller 3. A brake pawl 4 is installed on the roller mounting frame 2 at a position corresponding to the ratchet 301. An arc-shaped groove 201 is opened on the side of the roller mounting frame 2 at a position corresponding to the brake pawl 4. The braking pawl 4 includes a rotating mounting base 401 fixedly connected to the reel mounting bracket 2. A pawl plate 404 is rotatably mounted on the rotating mounting base 401 via a torsion spring shaft 402. Under the elastic force of the torsion spring shaft 402, the pawl plate 404 elastically presses against the limiting plate 403 at the top of the rotating mounting base 401. The pawl plate 404 is engaged with the ratchet 301, thereby preventing the ratchet 301 from rotating in the opposite direction. The forward rotation of the ratchet 301 will cause the pawl plate 404 to rotate on the torsion spring shaft 402, thus preventing the ratchet 301 from rotating. The rotation creates obstruction, facilitating the winding of the pull rope 5 via the reel 3. A connecting rod 4041 is fixedly connected to the side of the pawl plate 404. The connecting rod 4041 slides through the arc-shaped slot 201 and is fixedly connected to an actuating plate 4042 at its end. The actuating plate 4042 is located on the outer side of the end of the reel mounting bracket 2. The center of the arc-shaped slot 201 coincides with the axis of the torsion spring shaft 402. The actuating plate 4042 can rotate the pawl plate 404 by a certain angle, thereby disengaging it from the ratchet 301 and allowing the reel 3 to rotate in the opposite direction, facilitating the release of the wound pull rope 5.

[0016] The free end of the pull rope 5 is fixedly connected to a pull rod 6. The pull rope 5 is made of steel wire rope to ensure tensile strength and prevent breakage or oxidation damage. After passing through the mesh of the safety net, the pull rod 6 is connected to a hook on the safety net, thus enabling the pull of the safety net through the pull rope 5 and the pull rod 6. A groove 601 is formed on the circumferential surface of the pull rod 6 on the same side as the pull rope 5. The pull rod 6 can be hooked onto the safety net through the groove 601 to prevent the pull rod 6 from sliding on the safety net and to ensure the stability of the connection.

[0017] The working principle of this utility model is as follows: The pipe clamp 1 is clamped and fixed onto the scaffold steel pipe at the corresponding position of the safety net that needs tensioning. The pulling rod 6 passes through the safety net's mesh openings and hooks onto the net parallel to its surface. A wrench is used to engage the square shaft head 302, causing the reel 3 to rotate forward. Meanwhile, the brake pawl 4 locks the reel 3 in the opposite direction, ensuring that the reel 3 can only rotate in one direction, facilitating the winding of the pulling rope 5 and preventing it from loosening in the opposite direction. This pulls the pulling rod 6 to tension the safety net. When it is necessary to loosen the tension of the safety net, the ratchet plate 404 is rotated at a certain angle by the actuating plate 4042, disengaging it from the ratchet 301 and allowing the reel 3 to rotate in the opposite direction. This releases the wound pulling rope 5 and loosens the safety net.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" 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; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0020] Components not described in detail in this article are existing technologies.

[0021] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A new safety net tensioning device comprising a tube clamp (1), characterized in that, The pipe clamp (1) is fixedly connected with a reel mounting rack (2), the reel mounting rack (2) is rotatably connected with a reel (3), the reel (3) is fixedly connected with a ratchet wheel (301) near the inner side of the side plate of the reel mounting rack (2), one end of the reel (3) is fixedly connected with a square shaft head (302), the reel mounting rack (2) is provided with a brake pawl (4) corresponding to the ratchet wheel (301), the brake pawl (4) is buckled with the ratchet wheel (301), the reel (3) is wound with a pulling rope (5), and the free end of the pulling rope (5) is fixedly connected with a pulling rod (6).

2. A novel safety net tensioner as claimed in claim 1, wherein: The reel mounting rack (2) is provided with an arc-shaped notch (201) corresponding to the brake pawl (4) on the side.

3. A novel safety net tensioner as claimed in claim 2, wherein: The brake pawl (4) comprises a rotating mounting seat (401) fixedly connected with the reel mounting rack (2), a pawl plate (404) rotatably mounted on the rotating mounting seat (401) through a torsion spring shaft (402), the pawl plate (404) is elastically pressed on the limiting plate (403) on the top of the rotating mounting seat (401) under the elastic force of the torsion spring shaft (402), the pawl plate (404) is buckled with the ratchet wheel (301), and the center of the arc-shaped notch (201) coincides with the axis of the torsion spring shaft (402).

4. A novel safety net tensioner as claimed in claim 3, wherein: The side of the pawl plate (404) is fixedly connected with a connecting rod (4041), the connecting rod (4041) slides through the arc-shaped notch (201) and is fixedly connected with a pushing plate (4042) at the end, and the pushing plate (4042) is located outside the end of the reel mounting rack (2).

5. A new safety net tensioner as claimed in claim 1, wherein: The pulling rope (5) is a steel wire rope.

6. A new safety net tensioner as claimed in claim 1, wherein: The pulling rod (6) is provided with a clamping groove (601) on the circumferential surface on the same side of the pulling rope (5).

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