A folding cage ladder

Abstract

The utility model relates to a folding protective cage ladder stand, including straight ladder body, the straight ladder body upper end fixedly connected with connecting frame, the length direction is hinged with a plurality of U shape's protective cage between the two side columns of straight ladder body through the hinge axle interval, the hinge axle below the uppermost protective cage of the column of straight ladder body is provided with the limit baffle of the rotation limit of the uppermost protective cage, and the integral is connected through at least one sling belt between each protective cage, and the vertical interval of two protective cages is slightly larger than the degree of two protective cages between the adjacent two protective cages sling belt. The utility model replaces the sling belt for the protective cage reinforcing rod, not only reduces the overall quality, but also can realize the quick folding of protective cage, reduces the space occupation, and convenient transportation reduces the risk of protective cage deformation.

Description

Technical Field

[0001] This utility model relates to the field of steel structure installation technology, specifically to a foldable cage ladder. Background Technology

[0002] Safety cage ladders are safety devices used for high-altitude climbing in steel structure construction. Traditional ladders often use rigid materials for the cage, which is made of bent flat steel and fixed to the ladder's longitudinal columns. This type of ladder has disadvantages such as large footprint and susceptibility to deformation from impacts. During hoisting or loading, the cage is easily crushed, and once deformed, it is difficult to repair, rendering the ladder unusable. This increases costs, wastes resources, and negatively impacts transportation and personnel safety. Furthermore, as the height of the safety cage ladder increases, its weight also increases, making storage inconvenient, space-consuming, and difficult to transport. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a foldable cage ladder, which replaces the cage reinforcing rods with lifting straps. This not only reduces the overall weight but also enables the cage to be folded quickly, reducing space occupation, facilitating transportation, and lowering the risk of cage deformation.

[0004] This utility model is achieved through the following technical solution: A foldable cage ladder is provided, including a straight ladder body. A connecting frame is fixedly connected to the upper end of the straight ladder body. Multiple U-shaped cages are hinged at intervals along the length direction between the two uprights of the straight ladder body via hinge shafts. The uprights of the straight ladder body are provided with a limiting baffle below the hinge shaft of the uppermost cage to limit the rotation of the uppermost cage. Each cage is connected as a whole by at least one hoisting strap. The hoisting strap between two adjacent cages is slightly larger than the vertical distance between the two cages.

[0005] This solution uses hinged connections between the two sides of the cage and the uprights, along with hoisting straps to connect adjacent cages into a single unit. This ensures the safety of the cage ladder while effectively reducing its overall weight. Furthermore, each cage can rotate and fold to fit snugly against the main body of the straight ladder. Limiting baffles prevent the cage from rotating downwards during use, ensuring it remains in its usable state. When not in use, the cage can be pushed to the other side for storage, effectively reducing space occupation, facilitating transportation, and lowering the risk of cage deformation.

[0006] Furthermore, three lifting straps are provided, including a central lifting strap connected to the top of each cage U-shape and side lifting straps connected to both sides of each cage U-shape and symmetrical about the central lifting strap.

[0007] Three lifting straps are provided, one in the middle and one on each side of the U-shaped cage, which can increase the protective function of the cage and improve the safety of using the cage ladder.

[0008] Furthermore, the main body of the straight ladder includes at least two straight ladder units. The upper ends of the two columns of each straight ladder unit are respectively formed with female connectors, and the lower ends of the two columns of each straight ladder unit are respectively formed with male connectors. Positioning through holes are opened at the same position on the female connectors and male connectors. The two straight ladder units are connected by the female connectors and male connectors and positioning pins are inserted into the positioning through holes.

[0009] The straight ladder is formed by splicing together multiple straight ladder units, which can be easily expanded to accommodate climbing needs of different heights. Adjacent straight ladder units are fixed by plugging in male and female connectors and locking them with positioning pins to ensure the safety and stability of the connection, while also facilitating disassembly and installation.

[0010] Furthermore, each plug-in end of the straight ladder unit has two sets of positioning through holes at the top and bottom. A positioning pin is inserted into each set of positioning through holes. The end of the positioning pin that passes through the positioning through hole has a locking pin hole, and a B-shaped locking pin is provided in the locking pin hole.

[0011] The straight ladder unit has two sets of positioning through holes at the top and bottom of each plug end, and positioning pins are inserted into them respectively, which can improve the stability of the connection. The end of the positioning pin has a locking pin hole and is equipped with a B-shaped locking pin, which facilitates the removal of the positioning pin and the installation and removal of the straight ladder units.

[0012] Furthermore, each straight ladder unit has hooks at both ends of the bottommost crossbeam that are rotatably mounted between the two uprights to hook onto the upper crossbeam of the lower straight ladder unit.

[0013] The bottom crossbeam of each straight ladder unit has rotating hooks at both ends. After the two straight ladder units are plugged in and fixed, the hooks can be rotated to hook onto the crossbeam of the lower straight ladder unit, which serves as a safety measure to prevent the positioning pin in the positioning through hole from coming off and causing unstable connection between the two straight ladder units.

[0014] The beneficial effects of this utility model are: This invention features a hinged connection between the cage and the two side columns, with lifting straps connecting each cage into a single unit. When not in use, the cage can be rotated and stored against the main body of the straight ladder, facilitating transportation and effectively reducing the risk of cage deformation. In use, gravity allows each cage to rotate downwards and open, with limiting baffles preventing it from opening completely and forming a 90° perpendicular relationship with the side columns, ensuring the safety of climbers. The lifting straps replace existing rigid reinforcing bars, significantly reducing the weight and cost of the cage ladder while maintaining safety. Attached Figure Description

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

[0016] Figure 2 for Figure 1 Side view.

[0017] Figure 3 This is a schematic diagram of the straight ladder unit in this utility model.

[0018] Figure 4 This is a schematic diagram of the main structure of the straight ladder in this utility model.

[0019] Figure 5 This is a folding diagram of the folding cage ladder of this utility model.

[0020] Figure 6 This is a schematic diagram of the installation of the positioning pin and the B-shaped locking pin in this utility model.

[0021] As shown in the figure: 1. Straight ladder body; 2. Connecting frame; 3. Guard cage; 4. Limiting baffle; 5. Side lifting strap; 6. Middle lifting strap; 7. Crossbeam; 8. Positioning through hole; 9. Plug-in male connector; 10. Hook; 11. Plug-in female connector; 12. Positioning pin; 13. B-type locking pin. Detailed Implementation

[0022] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0023] A folding cage ladder includes a straight ladder body 1, with a connecting frame 2 fixedly connected to the upper end of the straight ladder body 1. Multiple U-shaped cages 3 are hinged at intervals along the length direction between the two side columns of the straight ladder body 1 via hinge shafts. The columns of the straight ladder body 1 are provided with a limiting baffle 4 below the hinge shaft of the uppermost cage 3 to limit the rotation of the uppermost cage 3. Each cage 3 is connected as a whole by at least one hoisting strap, and the hoisting strap between two adjacent cages 3 is slightly larger than the vertical distance between the two cages 3.

[0024] In this embodiment, three lifting straps are provided, including a central lifting strap 6 connected to the top of the U-shape of each cage 3 and side lifting straps 5 connected to both sides of the U-shape of each cage 3 and symmetrical about the central lifting strap 6.

[0025] The main body 1 of the straight ladder includes at least two straight ladder units. A suitable number of straight ladder units can be selected and combined for use according to the climbing height, offering wide applicability and convenient operation. Each straight ladder unit has two vertical columns at the top with female connectors 11 and two vertical columns at the bottom with male connectors 9. Positioning through holes 8 are formed at the same positions on both the female connectors 11 and male connectors 9. The two straight ladder units are connected by inserting the female connectors 11 and male connectors 9, and positioning pins 12 are inserted into the positioning through holes 8. In this invention, the vertical columns of the straight ladder unit are square tube structures. The female connector 11 can be the upper end of the square tube, and the male connector 9 is a square tube welded to the lower end of the square tube with an inner diameter smaller than the inner diameter of the lower end. After insertion, they can be connected to each other.

[0026] Each plug end of the straight ladder unit has two sets of positioning through holes 8 at the top and bottom. Each set of positioning through holes 8 has a positioning pin 12 inserted into it. The end of the positioning pin 12 that passes through the positioning through hole 8 has a locking pin hole, and a B-shaped locking pin 13 is provided in the locking pin hole.

[0027] At the bottom of each straight ladder unit, the two ends of the crossbeam 7 are rotatably mounted between the two columns with hooks 10 that can hook onto the upper crossbeam of the lower straight ladder unit.

[0028] The working process of this utility model: When using the safety cage ladder, select an appropriate number of straight ladder units for vertical insertion and assembly according to the required climbing height. Adjacent straight ladder units are connected via male connector 9 and female connector 11. Positioning pins 12 are inserted into the two sets of positioning through holes 8, and B-shaped locking pins 13 are installed in the locking pin holes of the positioning pins 12 to limit their movement and prevent them from dislodging from the positioning through holes 8. After insertion, rotate the hook 10 to hook the hook 10 of the upper straight ladder unit onto the upper crossbeam 7 of the lower straight ladder unit. To serve as a safety measure, preventing the positioning pin 12 from accidentally coming off or being damaged, thus ensuring an unstable connection at the insertion point, the hook 10 can be used to ensure that the lower and upper straight ladder units remain connected. After the safety cage ladder is erected, it is connected and fixed to the steel structure using the top connecting frame 2. The safety cages 3 between the columns can rotate downwards from one side of the straight ladder body under the action of gravity. Under the limiting action of the limiting baffle 4, each safety cage 3 forms a 90° angle with the straight ladder body, which can play a safety protection role for climbers.

[0029] After use, the protective cage ladder can be laid down, and the main body of the straight ladder can be disassembled into multiple straight ladder units to reduce the length of the main body 1. The protective cages 3 on each straight ladder unit can be pushed forward to be close to the uprights of the straight ladder unit. Since the lifting straps connect each protective cage 3 into a whole, each protective cage 3 can be rotated and laid down in the same direction, thus quickly completing the folding of the protective cage 3. The stacking of each straight ladder unit can facilitate transportation and transfer. At the same time, since the protective cage 3 can be folded and stored, it also reduces the space occupied and facilitates transportation and storage.

[0030] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A foldable safety cage ladder, comprising a straight ladder body, wherein a connecting frame is fixedly connected to the upper end of the straight ladder body, characterized in that: Multiple U-shaped guard cages are hinged at intervals along the length of the two side columns of the main body of the straight ladder via hinge shafts. The columns of the main body of the straight ladder are equipped with limit plates below the hinge shaft of the uppermost guard cage to limit the rotation of the uppermost guard cage. Each guard cage is connected as a whole by at least one hoisting strap, and the hoisting strap between two adjacent guard cages is slightly larger than the vertical distance between the two guard cages.

2. The folding cage ladder according to claim 1, characterized in that: There are three lifting slings: a central lifting sling connected to the top of each cage U-shape and side lifting slings connected to both sides of each cage U-shape and symmetrical about the central lifting sling.

3. The folding cage ladder according to claim 1, characterized in that: The main body of the straight ladder includes at least two straight ladder units. The upper two columns of each straight ladder unit are respectively formed with female plugs, and the lower two columns of each straight ladder unit are respectively formed with male plugs. Positioning through holes are opened at the same position on the female plugs and male plugs. The two straight ladder units are connected by the female plugs and male plugs and positioning pins are inserted in the positioning through holes.

4. The folding cage ladder according to claim 3, characterized in that: Each plug-in end of the straight ladder unit has two sets of positioning through holes at the top and bottom. A positioning pin is inserted into each set of positioning through holes. The end of the positioning pin that passes through the positioning through hole has a locking pin hole, and a B-shaped locking pin is installed in the locking pin hole.

5. The folding cage ladder according to claim 1, characterized in that: At the bottom of each straight ladder unit, hooks are installed at both ends of the crossbeam at the bottom, rotating between the two uprights, to hook onto the upper crossbeam of the lower straight ladder unit.

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