Safety protection device for vertical ladder

Abstract

The vertical ladder safety protection device comprises a ladder main body and a protection cage, a lower protection plate and an upper protection plate are arranged at the two ends of the ladder main body respectively, one side of the upper protection plate is connected with a hinge through a bolt, a self-locking assembly is arranged on the other side of the upper protection plate, and the self-locking assembly is connected with the lower protection plate through a bolt. A torsion spring is connected to a shaft rod in the middle of the hinge in a sleeving manner; the integrated lower protection plate, the supporting framework and the steel pipe are additionally arranged at the ladder stand body and the entrance of the protection cage, synchronous closing or opening of the entrance is achieved, simultaneous locking is achieved through the mechanical lock, the phenomenon of aloft work without examination and approval is eradicated, the steel pipe can cover the opening in the bottom of the protection cage, and staged protection is achieved; meanwhile, an upper protection plate with an automatic closing function is mounted at an outlet, so that a falling accident is prevented when a worker works near the edge, the tightness and stability of connection between the upper protection plate and the crawling ladder main body are ensured in cooperation with a self-locking assembly, and the upper protection plate is prevented from being affected by wind power at high altitude.

Description

Technical Field

[0001] This utility model relates to the field of high-altitude operation protection technology, specifically to a safety protection device for a straight ladder. Background Technology

[0002] Gypsum board production lines typically include large mechanical equipment such as mixers, molding machines, and dryers. These machines may be installed at high positions, and straight ladders are usually needed to assist in checking their operation. Straight ladders provide workers with a safe and convenient passage. Currently, when designing straight ladders, user safety must be the top priority. In addition to ensuring the stability of the ladder, appropriate protective devices must be added to further protect the safety of climbers. Existing protective devices usually involve installing protective cages on straight ladders to prevent them from falling outwards in the event of an accident.

[0003] In practical applications, the entrances to straight ladders and safety cages often adopt an open design. This design allows anyone to climb the ladder freely without approval, leading to frequent unauthorized high-altitude work. Especially in some taller straight ladders, the safety cages are often assembled in stages, and the open entrances make it difficult to provide effective safety guarantees for workers climbing. Furthermore, the connection between the ladder exit and the platform also adopts an open design. When workers are working on the edge of the platform, this open design exposes them to the risk of falling from a height, which could potentially cause serious personal injury in the event of an accident. Utility Model Content

[0004] Therefore, this utility model provides a safety protection device for a straight ladder to solve the problems of insufficient protection at the entrance and exit of the straight ladder in the prior art, the existence of unapproved high-altitude operations, and the risk of accidental falls when workers are working near the edge.

[0005] To achieve the above objectives, the embodiments of this utility model provide the following technical solutions:

[0006] A safety protection device for a straight ladder includes a ladder body and a protective cage. The ladder body has a lower protective plate and an upper protective plate at both ends. A hinge is bolted to one side of the upper protective plate, and a self-locking component is provided on the other side of the upper protective plate. A torsion spring is sleeved at the middle shaft of the hinge.

[0007] A support frame is welded to the front of the lower protective plate. The support frame is ring-shaped, and three vertical steel pipes are welded between the inner wall of the support frame and the lower protective plate. A mechanical lock that penetrates the main body of the ladder is provided in the middle of one side of the lower protective plate.

[0008] In a preferred embodiment of this utility model, the lower protective plate is rotatably connected to the main body of the climbing ladder, and when the lower protective plate rotates to cover the surface of the main body of the climbing ladder, the supporting frame and steel pipe are directly opposite the bottom opening of the protective cage.

[0009] As a preferred embodiment of the present invention, the self-locking assembly includes a locking rod and a locking block. The surface of the locking block is provided with a U-shaped groove, and the locking rod is inserted into the locking block through the U-shaped groove. The inner surface of the locking block is provided with a folding rod and a helical spring, and the folding rod, the helical spring and the inner wall of the locking block form a triangle.

[0010] As a preferred embodiment of this utility model, a slide is provided on the side of the bottom of the ladder body near the lower protective plate. A limit strip is slidably connected to the inner wall of the slide. When the limit strip slides to the bottom, the limit strip is in contact with the surface of the lower protective plate. A foot pedal ring is rotatably connected to the top of the limit strip.

[0011] The embodiments of this utility model have the following advantages:

[0012] This invention adds an integrated lower protective plate, support frame, and steel pipe to the ladder body and the entrance of the protective cage, enabling the simultaneous closing and opening of the entrance, and locking them simultaneously with a mechanical lock to prevent unauthorized high-altitude operations. For high straight ladders, when the support frame is closed, the steel pipe can effectively cover the opening at the bottom of the protective cage, achieving phased protection and ensuring safety during the climbing process. At the same time, an upper protective plate with an automatic closing function is installed at the exit to prevent workers from falling when working near the edge. In addition, a self-locking component is used to ensure the tightness and stability of the connection between the upper protective plate and the ladder body, preventing the upper protective plate from being affected by wind at high altitudes. Attached Figure Description

[0013] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0014] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0015] Figure 1 This is a schematic diagram of the overall structure in the embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure after the lower protective plate is opened in this embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure after the upper protective plate is opened in the embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the self-locking component structure in an embodiment of this utility model;

[0019] Figure 5 In the embodiments of this utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the picture:

[0021] 1-Climbing ladder body; 2-Safety cage; 3-Lower safety plate; 4-Upper safety plate; 5-Hinge; 6-Self-locking assembly; 7-Torsion spring; 8-Limit strip; 9-Foot ring;

[0022] 301 - Support frame; 302 - Steel pipe; 303 - Mechanical lock;

[0023] 601-Locking rod; 602-Locking block; 603-Folding rod; 604-Helical spring. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Please see Figures 1 to 5 This utility model provides a safety protection device for a straight climbing ladder, including a climbing ladder body 1 and a protective cage 2. The two ends of the climbing ladder body 1 are respectively provided with a lower protective plate 3 and an upper protective plate 4. A hinge 5 is connected to one side of the upper protective plate 4 by bolts, and a self-locking component 6 is provided on the other side of the upper protective plate 4. A torsion spring 7 is sleeved at the middle shaft of the hinge 5.

[0026] A support frame 301 is welded to the front of the lower protective plate 3. The support frame 301 is ring-shaped, and three vertical steel pipes 302 are welded between the inner wall of the support frame 301 and the lower protective plate 3. A mechanical lock 303 that penetrates the ladder body 1 is provided in the middle of one side of the lower protective plate 3.

[0027] In practical use:

[0028] Open and remove the mechanical lock 303, rotate clockwise to open the lower protective plate 3, causing the support frame to detach from the protective cage 2, opening the opening at the bottom of the protective cage 2, and allowing the worker to pass through the entrance and enter the protective cage 2 to begin climbing. Then close the lower protective plate 3, and the support frame 301 and steel pipe 302 together cover the bottom of the protective cage 2 again. Climb to the top exit, push open the upper protective plate 4, causing the upper protective plate 4 to rotate 90° counterclockwise along the ladder body 1. As the upper protective plate 4 rotates, the torsion spring 7 on the hinge 5 surface is compressed. After the worker passes through the exit, the upper protective plate 4 is automatically closed by the elastic force of the torsion spring 7, covering the exit again.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the lower protective plate 3 is rotatably connected to the ladder body 1. When the lower protective plate 3 rotates and covers the surface of the ladder body 1, the support frame 301 and steel pipe 302 are directly opposite the bottom opening of the protective cage 2. The lower protective plate 3, support frame 301 and steel pipe 302 are designed as an integrated unit. The upper protective plate 4 covers the entrance of the ladder body 1, and the support frame 301 and steel pipe 302 simultaneously cover and block the bottom entrance of the protective cage 2. This design enables the simultaneous opening or closing of the entrance of the ladder body 1 and the bottom entrance of the protective cage 2, providing staged protection for workers during the climbing process. The mechanical lock 303 penetrates the ladder body 1 and can lock the two bottom entrances at the same time to prevent workers from working without authorization.

[0030] like Figure 1 and Figure 4As shown, the self-locking assembly 6 includes a locking rod 601 and a locking block 602. The surface of the locking block 602 is provided with a U-shaped groove, through which the locking rod 601 is inserted into the locking block 602. The inner surface of the locking block 602 is provided with a folding rod 603 and a coil spring 604, which together form a triangle with the folding rod 603, the coil spring 604, and the inner wall of the locking block 602. The locking block 602 is welded to the upper protective plate 4. When the upper protective plate 4 automatically resets under the elastic force of the torsion spring 7, the folding rod 603 and the coil spring 604 on the inner surface of the locking block 602 simultaneously move towards the locking rod 601. The locking rod 601 is rotatably connected to the ladder body 1 via a shaft. When the surface of the folding rod 603 contacts the locking rod 601, the locking rod 601 is rotated clockwise, and the other end of the locking rod 601 is inserted into the U-shaped groove of the locking block 602, locking and fixing the upper protective plate 4 and the side 1 of the ladder body to prevent the upper protective plate 4 from being blown by the wind. When it needs to be opened, simply press the folding rod 603, the spiral spring 604 is stretched, the folding angle of the folding rod 603 is slightly reduced, making room for the locking rod 601 to rotate counterclockwise, and the other end of the locking rod 601 can then disengage from the locking block 602.

[0031] like Figure 1 and Figure 2 As shown, a slide is provided on the side of the bottom of the ladder body 1 near the lower protective plate 3. A limit strip 8 is slidably connected to the inner wall of the slide. When the limit strip 8 slides to the bottom, the limit strip 8 is in contact with the surface of the lower protective plate 3. A foot ring 9 is rotatably connected to the top of the limit strip 8. When the limit strip 8 slides down the lower protective plate 3, it makes one side of the lower protective plate 3 and the ladder body 1 fit together, so that the upper protective plate 4 can be firmly locked and fixed to the ladder body 1. The foot ring 9 makes it convenient for workers to step on it when climbing, without having to bend over.

[0032] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A safety protection device for a straight ladder, characterized in that, The system includes a ladder body (1) and a protective cage (2). The ladder body (1) has a lower protective plate (3) and an upper protective plate (4) at both ends. A hinge (5) is bolted to one side of the upper protective plate (4). A self-locking component (6) is provided on the other side of the upper protective plate (4). A torsion spring (7) is sleeved at the middle shaft of the hinge (5). The lower protective plate (3) has a support frame (301) welded to its front side. The support frame (301) is ring-shaped, and three vertical steel pipes (302) are welded between the inner wall of the support frame (301) and the lower protective plate (3). A mechanical lock (303) penetrating the ladder body (1) is provided in the middle of one side of the lower protective plate (3).

2. The safety protection device for a straight ladder according to claim 1, characterized in that, The lower protective plate (3) is rotatably connected to the ladder body (1). When the lower protective plate (3) rotates and covers the surface of the ladder body (1), the support frame (301) and steel pipe (302) are directly opposite the bottom opening of the protective cage (2).

3. The safety protection device for a straight ladder according to claim 1, characterized in that, The self-locking assembly (6) includes a locking rod (601) and a locking block (602). The surface of the locking block (602) is provided with a U-shaped groove. The locking rod (601) is inserted into the locking block (602) through the U-shaped groove. The inner surface of the locking block (602) is provided with a folding rod (603) and a coil spring (604). The folding rod (603), the coil spring (604) and the inner wall of the locking block (602) form a triangle.

4. The safety protection device for a straight ladder according to claim 1, characterized in that, The bottom of the ladder body (1) is provided with a slide on the side near the lower protective plate (3). A limit strip (8) is slidably connected to the inner wall of the slide. When the limit strip (8) slides to the bottom, the limit strip (8) is in contact with the surface of the lower protective plate (3). A foot ring (9) is rotatably connected to the top of the limit strip (8).

Images