Safety structure of ladder stand of crane
By designing a safety structure for the crane ladder, and utilizing components such as slide rails, rubber pads, slide channels, moving rods, and baffles, the problem of materials occupying hands during climbing is solved, thereby improving climbing safety and stability and reducing the risk of falls from heights.
Patent Information
- Application Number
- CN202520379293.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-06
AI Technical Summary
When climbing existing crane ladders, operators need to hold materials with one or both hands, which makes it impossible for their hands to effectively grip the fall arrest railings, reducing emergency response capabilities and climbing safety. In addition, the swaying of materials affects climbing stability.
A safety structure for a crane ladder has been designed, including components such as slide rails, rubber pads, slide grooves, moving rods, baffles, hooks, arc rods, and springs. Through the coordinated use of these components, materials can be stably hung and supported, preventing materials from occupying the hands during climbing and enhancing climbing safety.
It effectively avoids the risk of materials falling during climbing, reduces the physical exertion of climbers, improves climbing stability and emergency response capabilities, and reduces the occurrence of falls from heights.
Smart Images
Figure CN223839036U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of construction machinery technology, specifically, it relates to a safety structure for a crane ladder. Background Technology
[0002] Cranes, as indispensable vertical transportation equipment in modern construction projects, typically consist of towers tens or even hundreds of meters high. Operators must periodically climb vertically installed metal ladders to reach the high-altitude operating platform to perform equipment inspections, maintenance, and daily operations.
[0003] However, when performing high-altitude shift work, operators need to carry drinking water, sealed food, and small tool kits to maintain their physical strength. Conventional ladders have neither fixed storage devices nor auxiliary transportation mechanisms. During the climb, operators are forced to hold the items with one or both hands, resulting in at least one hand being unable to effectively grip the fall protection railing. Actual test data shows that under load, the grip strength of a person's single hand decreases by about 40%, and the stress response ability in an emergency decreases by 65%. This may lead to high-altitude fall accidents. At the same time, the impact of the fall causes deformation of the lower structure, resulting in secondary hazards such as damage to the precision transmission system worth millions.
[0004] To address the aforementioned issues, this application proposes a safety structure for a crane ladder. Utility Model Content
[0005] In view of the problems in the related technologies, this utility model proposes a safety structure for crane ladders to overcome the above-mentioned technical problems existing in the existing related technologies.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A safety structure for a crane ladder includes a tower crane body. A ladder is fixedly connected inside the tower crane body. A slide rail is fixedly connected to the outer wall of the ladder. A rubber pad is fixedly connected to the outer wall of the slide rail. A groove is formed on the outer wall of the slide rail. A moving rod is slidably connected to the slide rail through the groove. A baffle is fixedly connected to the outer wall of the moving rod. A hook is fixedly connected to the outer wall of the baffle. A mounting base is fixedly connected to the outer wall of the baffle. An arc-shaped rod is rotatably connected to the end of the mounting base away from the baffle. A spring is fixedly connected to the outer wall of the baffle. The end of the spring away from the baffle is fixedly connected to the outer wall of the arc-shaped rod. The end of the arc-shaped rod away from the mounting base is in contact with the rubber pad.
[0008] Preferably, an extension plate is slidably connected to the inner side wall of the baffle, and a limit rod is fixedly connected to the inner side wall of the baffle. The outer side wall of the limit rod is in contact with the inner side wall of the extension plate.
[0009] Preferably, a return spring is fixedly connected to the top of the extension plate, and the end of the return spring away from the extension plate is fixedly connected to the inner top of the baffle.
[0010] Preferably, the connecting ring is located on the outer side wall of the arc-shaped rod at the end away from the mounting base, and the connecting ring is annular.
[0011] Preferably, the bottom of the extension plate is fixedly connected to a protective plate for supporting the water source or food.
[0012] Preferably, a guardrail is fixedly connected to the outer wall of the ladder. The guardrail is located between the tower crane body and the ladder, and the cross-section of the guardrail is arc-shaped.
[0013] In summary, the technical effects and advantages of this utility model are as follows: This crane ladder safety structure, through the combined use of slide rails, rubber pads, slide grooves, moving rods, baffles, hooks, mounting bases, arc rods, and springs, facilitates the mounting and carrying of water sources and food carried by tower crane operators, preventing operators from being unable to hold on due to their hands being occupied by water sources or other materials during the climbing process, thereby reducing the risk of falling during the climbing process.
[0014] The use of extension plates, limit rods, return springs, and guard plates makes it easy to adapt to materials of different sizes, facilitates the support of materials, and prevents materials from swaying during climbing, thus avoiding any impact on climbers. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the slide rail and related parts of this utility model;
[0017] Figure 3 This is a schematic diagram of the baffle and related parts of this utility model;
[0018] Figure 4 This is a schematic diagram of the arc-shaped rod and related parts of this utility model.
[0019] In the picture:
[0020] 1. Tower crane body; 2. Ladder; 3. Slide rail; 4. Rubber pad; 5. Slide groove; 6. Moving rod; 7. Baffle; 8. Hook; 9. Mounting base; 10. Arc rod; 11. Spring; 12. Connecting ring; 13. Extension plate; 14. Limiting rod; 15. Return spring; 16. Guard plate; 17. Guardrail. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figure 1-4 A safety structure for a crane ladder includes a tower crane body 1. A ladder 2 is fixedly connected inside the tower crane body 1. Two slide rails 3 are fixedly connected to the outer walls of the ladder 2, located on opposite sides of the ladder 2. Rubber pads 4 are fixedly connected to the outer walls of both slide rails 3. Arc-shaped protrusions are provided on the side of each rubber pad 4 away from the slide rail 3 to increase friction. Slide grooves 5 are formed on the outer walls of the two slide rails 3. Moving rods 6 are slidably connected to the slide rails 3 via the slide grooves 5. Wheels are provided at both ends of the moving rods 6, located inside the two slide grooves 5 to reduce friction between the moving rods 6 and the slide grooves 5, thereby saving operator time. To reduce the physical exertion of the operators, a baffle 7 is fixedly connected to the outer wall of the moving rod 6, and a hook 8 is fixedly connected to the outer wall of the baffle 7. The operators can connect water sources and other materials to the baffle 7 through the hook 8 to prevent materials from falling during the climbing process. A mounting seat 9 is fixedly connected to the outer wall of the baffle 7. There are two mounting seats 9, which are symmetrically distributed with respect to the baffle 7. Taking one of the mounting seats 9 as an example, an arc rod 10 is rotatably connected to the end of the mounting seat 9 away from the baffle 7. A spring 11 is fixedly connected to the outer wall of the baffle 7. The end of the spring 11 away from the baffle 7 is fixedly connected to the outer wall of the arc rod 10. The end of the arc rod 10 away from the mounting seat 9 is in contact with the rubber pad 4.
[0023] In use, the operator can connect the curved rod 10 to themselves using ropes. As the operator climbs the ladder 2 towards the top of the tower crane, they pull the curved rod 10 to rotate via the ropes. At this time, the end of the curved rod 10 near the spring 11 gradually detaches from the rubber pad 4, and the resistance of the rubber pad 4 to the curved rod 10 disappears. As the operator climbs, the rope drives the baffle 7 to move along the direction of the slide 5 via the curved rod 10. When the operator reaches the top, as the tension of the rope disappears, the curved rod 10 returns to its original position relative to the spring. Under the action of spring 11, the baffle 7 re-adheres to the rubber pad 4. Since the rubber pad 4 is made of rubber and has an arc-shaped protrusion on its outer side wall, when the tension of the rope disappears, the baffle 7 falls towards the bottom of the ladder 2 under the influence of the weight of the material. At this time, under the action of spring 11, the arc-shaped rod 10 adheres to the outer side wall of the rubber pad 4. Under the influence of its own weight, the maximum static friction between the arc-shaped rod 10 and the rubber pad 4 can prevent the baffle 7 from sliding towards the bottom of the ladder 2, so that the operator can pick up the material.
[0024] Reference Figure 4An extension plate 13 is slidably connected to the inner wall of the baffle 7. A limit rod 14 is fixedly connected to the inner wall of the baffle 7. Multiple limit rods 14 are provided and are distributed in an array inside the baffle 7. The outer wall of the limit rod 14 is in contact with the inner wall of the extension plate 13 to limit the sliding direction of the extension plate 13, prevent the extension plate 13 from bending during the sliding process, and thus improve the stability of the materials.
[0025] Reference Figure 4 The top of the extension plate 13 is fixedly connected with a return spring 15. The number of return springs 15 corresponds to the number of limit rods 14, and multiple return springs 15 are located on the outer side wall of multiple limit rods 14 respectively. The end of the return spring 15 away from the extension plate 13 is fixedly connected to the inner top of the baffle 7. When the material is large, the extension plate 13 extends towards the bottom of the baffle 7. At this time, multiple return springs 15 pull the material under their own elastic force, thereby improving the placement stability of the material.
[0026] Reference Figure 3 and Figure 4 The connecting ring 12 is located on the outer wall of the end of the arc rod 10 away from the mounting base 9. There are two connecting rings 12, which are located on the outer walls of the two arc rods 10 respectively. The connecting rings 12 are in the shape of a ring. The operator can connect the rope to the connecting ring 12 to improve the connection stability between the rope and the connecting ring 12.
[0027] Reference Figure 4 The bottom of the extension plate 13 is fixedly connected to a protective plate 16. The cross-section of the protective plate 16 is L-shaped. The side of the protective plate 16 away from the extension plate 13 has a protrusion to protect the materials and facilitate the materials to fit into the extension plate 13 during transportation, and to support water sources or food.
[0028] Reference Figure 2 A guardrail 17 is fixedly connected to the outer wall of the ladder 2. The guardrail 17 is located between the tower crane body 1 and the ladder 2. The cross-section of the guardrail 17 is arc-shaped. The guardrail 17 is convenient for protecting the operators and preventing the operators from falling away from the ladder 2 during the climbing process.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A safety structure for a crane ladder, comprising a tower crane body (1), characterized in that, The tower crane body (1) is internally connected to a ladder (2). The outer wall of the ladder (2) is fixedly connected to a slide rail (3). The outer wall of the slide rail (3) is fixedly connected to a rubber pad (4). The outer wall of the slide rail (3) is provided with a groove (5). The slide rail (3) is slidably connected to a moving rod (6) through the groove (5). The outer wall of the moving rod (6) is fixedly connected to a baffle (7). The outer wall of the baffle (7) is fixedly connected to a hook (8). The outer wall of the baffle (7) is fixedly connected to a mounting base (9). The end of the mounting base (9) away from the baffle (7) is rotatably connected to an arc rod (10). The outer wall of the baffle (7) is fixedly connected to a spring (11). The end of the spring (11) away from the baffle (7) is fixedly connected to the outer wall of the arc rod (10). The end of the arc rod (10) away from the mounting base (9) is in contact with the rubber pad (4).
2. The safety structure for a crane ladder according to claim 1, characterized in that, An extension plate (13) is slidably connected to the inner wall of the baffle (7), and a limit rod (14) is fixedly connected to the inner wall of the baffle (7). The outer wall of the limit rod (14) is in contact with the inner wall of the extension plate (13).
3. The safety structure for a crane ladder according to claim 2, characterized in that, A reset spring (15) is fixedly connected to the top of the extension plate (13), and the end of the reset spring (15) away from the extension plate (13) is fixedly connected to the inner top of the baffle (7).
4. The safety structure for a crane ladder according to claim 1, characterized in that, A connecting ring (12) is fixedly connected to the outer wall of the arc-shaped rod (10). The connecting ring (12) is located on the outer wall of the arc-shaped rod (10) away from the mounting base (9). The connecting ring (12) is annular.
5. A safety structure for a crane ladder according to claim 2, characterized in that, The bottom of the extension plate (13) is fixedly connected to a guard plate (16) for supporting water or food.
6. The safety structure for a crane ladder according to claim 1, characterized in that, The outer wall of the ladder (2) is fixedly connected to a guardrail (17), which is located between the tower crane body (1) and the ladder (2). The cross-section of the guardrail (17) is arc-shaped.