Adjustable ladder cage

Abstract

The utility model discloses an adjustable ladder cage which comprises a bottom frame, side frames are fixedly connected to the two ends of the upper surface of the bottom frame, universal wheels are fixedly installed at the four corners of the bottom face of the bottom frame, the upper ends of the two side frames are fixedly connected with the same frame shaped like a Chinese character'fang ', and the bottom frame, the two side frames and the frame shaped like the Chinese character'fang' are matched to form an outer frame. Translation is carried out through the universal wheels, then the adjusting inner frame is driven by the adjusting structure to move above the bottom frame, stable movement in the vertical direction is carried out through limiting of the sliding connecting pieces, stopping is carried out after the adjusting inner frame moves to a proper position, then the two side supporting rods are rotated to be perpendicular to the side edges of the bottom frame, and stable supporting is carried out through the supporting structures. After use, the pi-shaped frame is taken down through the inserting structure, the adjusting inner frame can be disassembled, transferred and transported at the moment, construction operation is carried out through the adjusting inner frame with the height capable of being adjusted, the equipment use cost is reduced, meanwhile, moving, disassembling and transferring are convenient, and practicability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to an adjustable ladder cage. Background Art

[0002] In the construction of steel structure workshops, the construction of the upper structure requires high-altitude operations, and the working positions are variable, which makes the installation and construction difficult and has a high risk factor, and requires a large amount of manpower and equipment to carry out the operation.

[0003] For this type of aerial work, construction sites often use mobile aerial platforms, detachable simple scaffolding and other equipment for aerial work. Although the former is quick and convenient, the cost of use is relatively high, while the latter has a single structure and is inconvenient to move. It is also impossible to adjust the height of the operating platform for construction at different heights, and its practicality is poor. Utility Model Content

[0004] The purpose of the present invention is to provide an adjustable ladder cage in order to solve the above problems, as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The top of the two wheels is fixedly provided with a wheeled chassis, and the wheelbase is shortened and the shifting mechanism is adapted to rotate the two wheels simultaneously.

[0007] The above-mentioned adjustable ladder cage is adopted to translate through the universal wheels, and then the adjusting inner frame is driven to move above the bottom frame through the adjusting structure, and stably moves in the vertical direction through the limit of the sliding connection. After moving to the appropriate position, it stops, and then the two side support rods are rotated respectively to make them perpendicular to the sides of the bottom frame, and stably supported by the supporting structure. Then, the work platform is climbed up by the ladder. The guardrail can protect the workers on the working platform. After use, the π-shaped frame is removed through the plug-in structure, and the adjusting inner frame can be removed at this time for transfer and transportation.

[0008] Preferably, a self-locking structure is provided on the universal wheel.

[0009] Preferably, the sliding connecting member includes four guiding rail plates, the cross-section of the guiding rail plate is L-shaped, the two front guiding rail plates are respectively fixedly connected to the two side frames through the first support plates, and the two rear guiding rail plates are respectively fixedly connected to the upper ends of the two ends of the π-shaped frame through the second support plates, and the inner side walls of the four guiding rail plates are respectively abutted against the four corner columns of the adjusting inner frame.

[0010] Preferably, the adjusting structure includes two hanging rings and a chain block. The two hanging rings are respectively fixedly connected to the top of the side frame and the bottom of the adjusting inner frame. The fixed end of the chain block is hung on the hanging ring at the upper end of the side frame through the first hook, and the movable end of the chain block is hung on the hanging ring at the lower end of the adjusting inner frame through the second hook.

[0011] Preferably, two connecting ear plates are fixedly connected to the middle of the side wall of the bottom frame, and the end of the side support rod is rotatably connected between the two connecting ear plates, and friction pads in contact with the connecting ear plates are fixedly connected to both sides of the end of the side support rod.

[0012] Preferably, the supporting structure includes a threaded hole opened at the end of the side support rod, and a threaded rod is threadedly connected in the threaded hole, and a supporting plate is connected to the lower end of the threaded rod.

[0013] Preferably, the plugging structure includes two plug rods fixedly connected to the lower end of the π-shaped frame. Two through holes for plugging the plug rods are formed in the bottom frame. T-shaped plugs are fixedly connected to both upper ends of the π-shaped frame. T-shaped slots for plugging the T-shaped plugs are formed at both open ends of the C-shaped frame, and bolt connecting members for fixing the T-shaped plugs are provided in the T-shaped slots.

[0014] Preferably, the bolt connecting member includes a jack formed through the T-shaped plug, a bolt is plugged in the jack, and a bolt hole threadedly connected to the bolt is formed at the inner bottom of the T-shaped slot.

[0015] The beneficial effects are as follows:

[0016] It is translated by the universal wheel, then the adjusting inner frame is driven to move above the bottom frame through the adjusting structure, and the stable movement in the vertical direction is limited by the sliding connecting member. After moving to the appropriate position, stop, then rotate the two side support rods respectively to make them perpendicular to the side of the bottom frame, and stably support through the supporting structure. After use, remove the π-shaped frame through the plugging structure. At this time, the adjusting inner frame can be removed and transported. By using the adjustable adjusting inner frame for construction operations, the equipment use cost is reduced, and at the same time, it is convenient for moving, disassembling and transporting, improving the practicability. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is the three-dimensional view of the present invention;

[0019] Figure 2 is the disassembled three-dimensional view of the present invention;

[0020] Figure 3 is the three-dimensional view of the side strut of the present invention;

[0021] Figure 4 is the present invention Figure 2 the enlarged view at position A in;

[0022] The description of the reference numerals is as follows:

[0023] 1, bottom frame; 2, universal wheel; 3, side frame; 4, C-shaped frame; 5, adjustable inner frame; 6, ladder; 7, working platform; 8, guardrail; 9, π-shaped frame; 10, connecting ear plate; 11, side strut; 12, threaded hole; 13, threaded rod; 14, support plate; 15, friction pad; 16, perforation; 17, plug rod; 18, T-shaped slot; 19, T-shaped plug; 20, bolt; 21, jack; 22, bolt hole; 23, chain block; 24, hanging ring; 25, guide track plate. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will describe the technical solutions of the present invention in detail. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present invention.

[0025] See Figure 1-Figure 4As shown in the figure, the utility model provides an adjustable ladder cage, which includes a bottom frame 1. Both ends of the upper surface of the bottom frame 1 are fixedly connected with side frames 3. Four corners of the bottom surface of the bottom frame 1 are fixedly installed with universal wheels 2. The upper ends of the two side frames 3 are fixedly connected with the same U-shaped frame 4. The bottom frame 1, the two side frames 3 and the U-shaped frame 4 cooperate to form an outer frame. An adjustable inner frame 5 is arranged above the bottom frame 1. The upper end of the adjustable inner frame 5 is fixedly connected with a working platform 7. A guardrail 8 is fixedly connected to the upper surface of the working platform 7. Ladders 6 are arranged on the front sides of the outer frame and the adjustable inner frame 5. Four corners inside the two side frames 3 are respectively provided with sliding connectors for stably moving the adjustable inner frame 5 up and down, and the upper ends of the two side frames 3 are respectively provided with adjusting structures for driving the adjustable inner frame 5 to move up and down. Both sides of the bottom surface of the bottom frame 1 are rotatably connected with side support rods 11, and support structures are arranged at the ends of the two side support rods 11. An inverted pi-shaped frame 9 is arranged at the rear opening of the U-shaped frame 4, and the inverted pi-shaped frame 9 is detachably connected to the U-shaped frame 4 and the bottom frame 1 through a plug-in structure.

[0026] As an optional implementation manner, a self-locking structure is arranged on the universal wheel 2 to prevent accidental movement during operation.

[0027] As an optional implementation manner, the sliding connector includes four guide track plates 25. The cross-section of the guide track plate 25 is L-shaped. The two front guide track plates 25 are respectively fixedly connected with the two side frames 3 through the first support plates. The two rear guide track plates 25 are respectively fixedly connected with the upper ends of both sides of the inverted pi-shaped frame 9 through the second support plates. And the inner side walls of the four guide track plates 25 are respectively abutted against the corner columns of the adjustable inner frame 5. After the inverted pi-shaped frame 9 is installed, the inner angles of the four guide track plates 25 are respectively abutted against the corner columns of the adjustable inner frame 5 to limit the movement of the adjustable inner frame 5. On the one hand, the shaking of the working platform is reduced. On the other hand, the adjustable inner frame 5 reduces the shaking through the chain block 23. The outer frame is always in a stable state during operation, greatly improving the safety and stability of the platform operation.

[0028] Refer to Figure 2As shown in the figure, the adjustment structure includes two hanging rings 24 and a chain hoist 23. The two hanging rings 24 are respectively fixedly connected to the top of the side frame 3 and the bottom of the adjustment inner frame 5. The fixed end of the chain hoist 23 is hooked to the hanging ring 24 at the upper end of the side frame 3 through a first hook, and the movable end of the chain hoist 23 is hooked to the hanging ring 24 at the lower end of the adjustment inner frame 5 through a second hook. The installation is completed by hanging the hook at the fixed end of the chain hoist 23 on the upper hanging ring 24 and then hanging the hook at the movable end on the lower hanging ring 24. By rotating the hand chain on one side of the chain hoist 23, the movable end hook drives the adjustment inner frame 5 to move (the chain hoist is a prior art. When lifting a heavy object upward, the manual chain is pulled clockwise, the chain wheel rotates. When descending, the manual chain is pulled counterclockwise, the brake seat separates from the brake pad, the ratchet is stationary under the action of the pawl, and the five-tooth long shaft drives the hoisting sprocket to run in the opposite direction, so as to smoothly lower the heavy object, which will not be elaborated here).

[0029] Refer to Figure 3 As shown in the figure, two connecting ear plates 10 are fixedly connected to the middle of the side wall of the bottom frame 1, and the end of the side support rod 11 is rotatably connected between the two connecting ear plates 10. Friction pads 15 in contact with the connecting ear plates 10 are fixedly connected to both sides of the end of the side support rod 11, which can make the side support rod 11 abut against the connecting ear plate 10 during rotation, and the side support rod 11 can achieve the effect of stopping immediately when rotating through the friction force between the two.

[0030] As an optional implementation manner, the support structure includes a threaded hole 12 opened at the end of the side support rod 11. A threaded rod 13 is threadedly connected in the threaded hole 12. The lower end of the threaded rod 13 is connected with a support plate 14. When the side support rod 11 rotates to the outside, the threaded rod 13 is rotated. Through its threaded connection with the threaded hole 12, the support plate 14 is driven to move downward and abut against the ground, achieving the effect of stable support and preventing tipping.

[0031] Refer to Figure 4 As shown in the figure, the insertion structure includes two insertion rods 17 fixedly connected to the lower end of the π-shaped frame 9. Two through holes 16 for inserting the insertion rods 17 are opened on the bottom frame 1. T-shaped insertion blocks 19 are fixedly connected to both upper ends of the π-shaped frame 9. T-shaped slots 18 for inserting the T-shaped insertion blocks 19 are opened at both open ends of the C-shaped frame 4. And a bolt connecting piece for fixing the T-shaped insertion block 19 is provided in the T-shaped slot 18. The bolt connecting piece includes a jack 21 penetratingly opened on the T-shaped insertion block 19. A bolt 20 is inserted into the jack 21. A bolt hole 22 threadedly connected to the bolt 20 is opened at the inner bottom of the T-shaped slot 18. When the π-shaped frame 9 is installed, it is placed at the upper rear side of the bottom frame 1 and installed by inserting from top to bottom, so that the insertion rods 17 are inserted into the through holes 16. At the same time, the T-shaped insertion blocks 19 are inserted into the T-shaped slots 18, and then the bolts 20 are inserted into the jacks 21 and the bolt holes 22 and rotated to complete the installation and fixation of the π-shaped frame 9. At this time, the open side of the C-shaped frame 4 is blocked.

[0032] With the above structure, the universal wheel 2 is used for translation, and then the adjusting inner frame 5 is driven to move above the bottom frame 1 through the adjusting structure, and is stably moved in the vertical direction through the limit of the sliding connection. After moving to the appropriate position, it stops, and then the two side support rods 11 are rotated respectively to make them perpendicular to the side of the bottom frame 1, and are stably supported by the supporting structure. Then, the working platform 7 is climbed up by the ladder 6. The guardrail 8 can protect the workers on the working platform 7. After use, the π-shaped frame 9 is removed through the plug-in structure. At this time, the adjusting inner frame 5 can be removed and transferred for transportation.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. Adjustable ladder cage, characterized by: It includes a bottom frame (1). Both ends of the upper surface of the bottom frame (1) are fixedly connected with side frames (3). Universal wheels (2) are fixedly installed at the four corners of the bottom surface of the bottom frame (1). The upper ends of the two side frames (3) are fixedly connected with the same U-shaped frame (4). The bottom frame (1), the two side frames (3) and the U-shaped frame (4) cooperate to form an outer frame. An adjustable inner frame (5) is arranged above the bottom frame (1). The upper end of the adjustable inner frame (5) is fixedly connected with a working platform (7). A guardrail (8) is fixedly connected to the upper surface of the working platform (7). Ladders (6) are arranged on the front sides of the outer frame and the adjustable inner frame (5). Four sliding connectors for stably moving the adjustable inner frame (5) up and down are arranged at the four corners inside the two side frames (3). And adjusting structures for driving the adjustable inner frame (5) to move up and down are arranged at the upper ends of the two side frames (3). Side support rods (11) are rotatably connected to both sides of the bottom surface of the bottom frame (1). And support structures are arranged at the ends of the two side support rods (11). A π-shaped frame (9) is arranged at the rear opening of the U-shaped frame (4). The π-shaped frame (9) is detachably connected to the U-shaped frame (4) and the bottom frame (1) through a plug-in structure.

2. The adjustable ladder cage according to claim 1, characterized in that: A self-locking structure is arranged on the universal wheel (2).

3. The adjustable ladder cage according to claim 1, characterized in that: The sliding connector includes four guide track plates (25). The cross-section of the guide track plate (25) is L-shaped. The two front guide track plates (25) are respectively fixedly connected to the two side frames (3) through the first support plates. The two rear guide track plates (25) are respectively fixedly connected to the upper ends of both sides of the π-shaped frame (9) through the second support plates. And the inner side walls of the four guide track plates (25) are respectively abutted against the four corner columns of the adjustable inner frame (5).

4. The adjustable ladder cage according to claim 1, characterized in that: The adjusting structure includes two hanging rings (24) and a chain block (23). The two hanging rings (24) are respectively fixedly connected to the top of the side frame (3) and the bottom of the adjustable inner frame (5). The fixed end of the chain block (23) is hooked to the hanging ring (24) at the upper end of the side frame (3) through the first hook. And the movable end of the chain block (23) is hooked to the hanging ring (24) at the lower end of the adjustable inner frame (5) through the second hook.

5. The adjustable ladder cage according to claim 1, characterized in that: Two connecting ear plates (10) are fixedly connected to the middle of the side wall of the bottom frame (1). And the end of the side support rod (11) is rotatably connected between the two connecting ear plates (10). And friction pads (15) in contact with the connecting ear plates (10) are fixedly connected to both sides of the end of the side support rod (11).

6. The adjustable ladder cage according to claim 1, characterized in that: The support structure includes a threaded hole (12) opened at the end of the side support rod (11). A threaded rod (13) is threadedly connected in the threaded hole (12). The lower end of the threaded rod (13) is connected with a support plate (14).

7. The adjustable ladder cage according to claim 1, characterized in that: The plugging structure includes two plug rods (17) fixedly connected to the lower end of the π-shaped frame (9). Two through holes (16) for plugging the plug rods (17) are formed through the bottom frame (1). T-shaped plug blocks (19) are fixedly connected to both upper ends of the π-shaped frame (9). T-shaped slots (18) for plugging the T-shaped plug blocks (19) are formed at both open ends of the U-shaped frame (4). And bolt connecting pieces for fixing the T-shaped plug blocks (19) are arranged in the T-shaped slots (18).

8. The adjustable ladder cage according to claim 7, characterized in that: The bolt connecting pieces include insertion holes (21) formed through the T-shaped plug blocks (19). Bolts (20) are inserted into the insertion holes (21). Bolt holes (22) threadedly connected to the bolts (20) are formed at the inner bottom of the T-shaped slots (18).

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