Foldable scaffold

Abstract

The utility model discloses a foldable scaffold relates to scaffold technical field, this foldable scaffold, including roof board spare, still include outer frame and inner support frame, and outer frame is located inner support frame outside, and outer frame is located between the ground between roof board spare bottom four corners, is used for supporting the whole roof board spare, and inner support frame is located between the ground between roof board spare middle part, is used for supporting roof board spare middle part, the outer frame includes two side -by -side and interval setting's connecting frame, two groups of shearing type telescopic frame, brake wheel and fixed frame, and is provided with the limiting structure on fixed frame, the inner support frame includes sleeve rod, movable rod, hand twist screw no.

Description

Technical Field

[0001] This utility model relates to the field of scaffolding technology, specifically to a foldable scaffolding. Background Technology

[0002] The origins of scaffolding can be traced back to ancient building construction. To meet the needs of working at heights, people began using simple materials such as wood and bamboo to build temporary support structures for tasks like wall construction and roof repairs. With the continuous development of construction technology and the increasing scale and height of buildings, the limitations of traditional simple support structures in terms of stability, safety, and applicability have become increasingly apparent. To adapt to the diverse construction needs of modern building projects, scaffolding materials have gradually shifted towards steel, aluminum alloys, and other materials. Structural designs have also become more standardized and systematic, resulting in various types of scaffolding systems, including ground-mounted, cantilevered, and mobile systems, making them an indispensable temporary facility in building construction.

[0003] Existing scaffolding relies solely on the four corners for support, resulting in uneven stress on the top plate, making it prone to deformation and damage. This affects the stability of the scaffolding and poses safety risks. Therefore, improving the support stability of scaffolding is an urgent problem to be solved. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the background art by providing a foldable scaffold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A foldable scaffold includes a top plate, an outer frame, and an inner support frame. The outer frame is located outside the inner support frame and between the four bottom corners of the top plate and the ground, providing overall support for the top plate. The inner support frame is located between the middle portion of the top plate and the ground, providing support for the middle portion of the top plate. The outer frame includes two parallel and spaced connecting frames, two sets of scissor-type telescopic frames, brake wheels, and a fixed frame. The connecting frames are located on the underside of the top plate, and brake wheels are rotatably mounted on the lower end of the connecting frames. The two sets of scissor-type telescopic frames are rotatably mounted between the two connecting frames. The movable ends of the scissor-type telescopic frames are movably connected to the fixed frame, and the fixed frame is equipped with a limit joint. The structure includes a fixed frame located on the side of the connecting frame closer to the scissor-type telescopic frame; the inner support frame includes a sleeve rod, a movable rod, two hand-tightening screws, two auxiliary support members arranged side by side and spaced apart, and two support seats. The sleeve rod is movably sleeved on the outside of the upper end of the movable rod. The two hand-tightening screws are located at the connection between the sleeve rod and the movable rod and limit the movement of the movable rod. The two auxiliary support members are movably installed on the sleeve rod, and the fixed ends of the auxiliary support members are rotatably installed on the connecting frame. They are rotatably connected to the connecting frame through the auxiliary support members, which drives the two connecting frames to move horizontally and adjust the distance between the two connecting frames. The two support seats are respectively fixed at the upper end of the sleeve rod and the lower end of the movable rod and support the top plate.

[0006] Furthermore, the top plate component includes a top plate and two suspension blocks arranged side by side with a gap between them. The suspension blocks are located below one end of the top plate and are fixed to the top plate.

[0007] Furthermore, each of the connecting frames includes two hollow columns and multiple crossbars. The two hollow columns are arranged side by side and spaced apart. The multiple crossbars are arranged in a linear array from top to bottom and are fixed between the two hollow columns. Each hollow column has a brake wheel that can be rotatably installed at its lower end. Each hollow column has a fixed frame fixed on the side near the scissor telescopic frame.

[0008] Furthermore, the two sets of scissor-type telescopic frames are rotatably arranged between two hollow columns on the same horizontal line in the two connecting frames; each scissor-type telescopic frame includes two rotatable cross-connecting connecting rods, the fixed ends of the two connecting rods are rotatably connected to the hollow column on the corresponding side, the movable ends of the two connecting rods are slidably connected to the fixed frame on the hollow column on the opposite side, and the movable ends of the connecting rods are rotatably connected to connecting blocks.

[0009] Furthermore, each of the aforementioned limiting structures includes a locking plate and a hand-tightening screw. The locking plate is in the shape of an inverted L and is located outside the connecting block located in the lower part of the fixed frame. The upper end of the locking plate is inserted into the two plates in the fixed frame. The hand-tightening screw passes through the side end of the locking plate and is threadedly connected to the two plates. The upper and lower parts of the two plates are provided with locking grooves that are compatible with the locking plate.

[0010] Furthermore, the fixing frame includes two plates arranged side by side and spaced apart. Each plate has a sliding groove adapted to the connecting block. Each connecting block is respectively set on the sliding groove on the corresponding side and can slide along the sliding groove.

[0011] Furthermore, each of the auxiliary support components includes a slider, a limiting block, and two auxiliary frames. The limiting block is rotatably disposed on one end of the slider near the second hand screw and is threadedly connected to the sleeve rod. The sleeve rod has four external threads arranged side by side and spaced apart on its outer circumference. The limiting block has an internal thread groove on its inner side. The two auxiliary frames are symmetrically disposed on both sides of the slider. The fixed ends of the two auxiliary frames are rotatably connected to the connecting frame on the corresponding side, and the movable ends of the two auxiliary frames are rotatably connected to both sides of the slider.

[0012] Compared with the prior art, this utility model provides a foldable scaffolding, which has the following advantages: This foldable scaffolding, through its dual support structure of outer frame and inner support frame, can provide stable support for the top plate, avoiding structural deformation or instability caused by excessive local stress, thus improving the overall stability of the scaffolding. Furthermore, the scaffolding can be folded and unfolded as a whole, reducing transportation space during transport, making it easy to move, store, and use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the outer frame and inner support frame of this utility model; Figure 3 This is a schematic diagram of the structure of the card plate after disassembly. Figure 4 This is a schematic diagram of the internal structure of the sleeve rod and the movable rod of this utility model; Figure 5 This is a schematic diagram of the scaffolding structure in its folded state according to this utility model.

[0014] In the diagram: 1. Connecting frame; 2. Connecting rod; 3. Connecting block; 4. Fixing frame; 5. Slide groove; 6. Slot; 7. Card plate; 8. Hand screw one; 9. Brake wheel; 10. Sleeve rod; 11. Movable rod; 12. Hand screw two; 13. Support base; 14. Slider; 15. Limiting block; 16. Auxiliary frame; 17. Top plate; 18. Suspension block. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0016] Figures 1-5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-5 The present invention will be further described below.

[0017] See attached document Figures 1-5 This utility model discloses a foldable scaffold, including a top plate, an outer frame, and an inner support frame. The outer frame is located outside the inner support frame and between the four bottom corners of the top plate and the ground, and is used to support the top plate as a whole. The inner support frame is located between the middle part of the top plate and the ground, and is used to support the middle part of the top plate.

[0018] When the inner support frame and the outer frame work synchronously, they are used to support the top plate. When it is necessary to fold up or unfold, the inner support frame drives the outer frame to fold up or unfold, adjusting the distance between the two connecting frames 1.

[0019] The outer frame includes two parallel and spaced connecting frames 1, two sets of scissor telescopic frames, brake wheels 9, and a fixed frame 4. The connecting frames 1 are located on the lower side of the top plate. The brake wheels 9 are rotatably mounted on the lower end of the connecting frames 1. The two sets of scissor telescopic frames are rotatably mounted between the two connecting frames 1. The movable ends of the scissor telescopic frames are movably connected to the fixed frame 4. The fixed frame 4 is provided with a limit structure. The fixed frame 4 is located on the side of the connecting frames 1 close to the scissor telescopic frames.

[0020] Specifically, each connecting frame 1 includes two hollow columns and multiple crossbars. The two hollow columns are arranged side by side and spaced apart. The multiple crossbars are arranged in a linear array from top to bottom and are fixed between the two hollow columns. Each hollow column is equipped with a brake wheel 9 that can be rotated at its lower end. Each hollow column is also fixed with a fixing frame 4 on the side near the scissor telescopic frame.

[0021] Two sets of scissor-type telescopic frames are rotatably set between two hollow columns on the same horizontal line in two connecting frames 1; each scissor-type telescopic frame includes two rotatable cross-connecting connecting rods 2, the fixed ends of the two connecting rods 2 are rotatably connected to the hollow column on the corresponding side, the movable ends of the two connecting rods 2 are slidably connected to the fixed frame 4 on the hollow column on the opposite side, and the movable ends of the connecting rods 2 are rotatably connected to the connecting block 3.

[0022] Each limiting structure includes a locking plate 7 and a hand-tightening screw 8. The locking plate 7 is an inverted L-shape and is located outside the connecting block 3 located in the lower part of the fixing frame 4. The upper end of the locking plate 7 is inserted into the two plates in the fixing frame 4. The hand-tightening screw 8 passes through the side end of the locking plate 7 and is threadedly connected to the two plates. The upper and lower parts of the two plates are provided with locking grooves 6 that are adapted to the locking plate 7.

[0023] The fixing frame 4 includes two plates arranged side by side and spaced apart. Each plate has a sliding groove 5 that is adapted to the connecting block 3. Each connecting block 3 is respectively set on the sliding groove 5 on the corresponding side and can slide along the sliding groove 5.

[0024] In this embodiment, the sliding groove 5 and the slot 6 on the same plate are connected in a conductive manner, and the movable end of the connecting rod 2 slides between the two plates in the same fixed frame 4, driving the two connecting frames 1 to move horizontally.

[0025] In order to limit the connection block 3 after the outer frame is unfolded and prevent it from moving upward and affecting the stability of the scaffold, a limiting structure is set up so that the connection block 3 cannot move up or down after the outer frame is unfolded, thereby ensuring the stability of the scaffold.

[0026] The locking plate 7 in the limiting structure includes an upper horizontal plate and a side plate. The upper horizontal plate is fixed to the upper end of the side plate and passes through the locking groove 6 on the two plates in the same fixed frame 4. The upper horizontal plate is positioned above the connecting block 3 at the bottom of the sliding groove 5 to limit the upward movement of the connecting block 3 and ensure that the connecting block 3 cannot move. The side plate is positioned outside the end of the connecting block 3 away from the inner support frame. A hand screw 8 is positioned below the connecting block 3 and passes through the side plate and is threadedly connected to the two plates to limit the locking plate 7.

[0027] When the scaffolding is retracted, the suspension block 18 can be fitted onto the two hollow columns and the fixing frame 4 in the connecting frame 1 on one side. The suspension block 18 is designed to hang the top plate 17 on the connecting frame 1 on one side when the scaffolding is retracted and not in use, so as to avoid careless handling and loss.

[0028] The inner support frame includes a sleeve rod 10, a movable rod 11, a second hand screw 12, two auxiliary support members arranged side by side and spaced apart, and two support seats 13. The sleeve rod 10 is movably sleeved on the outside of the upper end of the movable rod 11. The second hand screw 12 is located at the connection between the sleeve rod 10 and the movable rod 11 and limits the movement of the movable rod 11.

[0029] Two auxiliary support members are movably mounted on the sleeve rod 10. The fixed end of the auxiliary support member is rotatably mounted on the connecting frame 1 and is rotatably connected to the connecting frame 1 through the auxiliary support member, thereby driving the two connecting frames 1 to move horizontally and adjusting the distance between the two connecting frames 1. Two support seats 13 are respectively fixed at the upper end of the sleeve rod 10 and the lower end of the movable rod 11, and support the top plate.

[0030] Specifically, each auxiliary support component includes a slider 14, a limiting block 15, and two auxiliary frames 16. The limiting block 15 is rotatably disposed at one end of the slider 14 near the second hand screw 12 and is threadedly connected to the sleeve rod 10. The sleeve rod 10 has four external threads arranged side by side and spaced apart on its outer circumference. The limiting block 15 has an internal thread groove on its inner side. Two auxiliary frames 16 are symmetrically arranged on both sides of the slider 14. The fixed ends of the two auxiliary frames 16 are rotatably connected to the connecting frame 1 on the corresponding side, and the movable ends of the two auxiliary frames 16 are rotatably connected to both sides of the slider 14.

[0031] In this embodiment, the second hand screw 12 is located in the middle of the sleeve rod 10 and is threadedly connected to the sleeve rod 10. The second hand screw 12 passes through the movable rod 11, and the movable rod 11 has two connecting holes that are adapted to the second hand screw 12, which are used to limit the position of the movable rod 11.

[0032] To ensure effective support for the top plate 17, a sleeve rod 10 and a movable rod 11 are installed. When the scaffolding moves, it moves via a brake wheel 9. When no further movement is needed, the brake wheel 9 brakes, and simultaneously, the second hand screw 12 is tightened, causing the movable rod 11 to move its lower support seat 13 downwards until it contacts the ground. The second hand screw 12 is then tightened again to limit the movable rod 11, ensuring that the upper and lower support seats 13 support the top plate 17 and guarantee the stability of the support.

[0033] In order to limit the position of the auxiliary frame 16 so that the outer frame can be unfolded or retracted, a limiting block 15 is provided on the slider 14. The limiting block 15 is threadedly connected to the sleeve rod 10 to limit the position of the slider 14 and the auxiliary frame 16 thereon.

[0034] The upper and lower parts of the sleeve rod 10 are each provided with two external threads. The upper external thread in the upper part is the external thread at the end point of the upper limit block 15, and the lower external thread in the upper part is the external thread at the start point of the upper limit block 15. The lower external thread in the lower part is the external thread at the end point of the lower limit block 15, and the upper external thread in the lower part is the external thread at the start point of the lower limit block 15.

[0035] In use, the scaffolding is moved to the desired position using the brake wheel 9. Tighten the second hand screw 12 outwards to release the restriction on the movable rod 11, causing it to move downwards and the lower support 13 to contact the ground. Then, tighten the second hand screw 12 to restrict the movable rod 11. Tighten the first hand screw 8 outwards to release the restriction on the clamping plate 7 and remove it. Simultaneously, tighten the upper and lower limit blocks 15, causing them to move the two sliders 14 in a relatively distant direction. The lower slider 14 moves downwards, and the upper slider 14 moves upwards. After the limit block 15 is disconnected from its corresponding starting point external thread, push the two sliders 14 until the limit block 15 moves to its corresponding ending point external thread. Rotate the limit block 15 again to reconnect it with its corresponding ending point external thread.

[0036] During this process, the upper auxiliary frame 16 tilts and rotates upward from its movable end to a horizontal position, and the lower auxiliary frame 16 tilts and rotates downward from its movable end to a horizontal position. The rotation of the auxiliary frame 16 pushes the connecting frame 1 to move horizontally outward, and the two scissor telescopic frames unfold, causing the connecting block 3 to move downward in the slide groove 5 until the connecting block 3 can no longer move downward. At this time, the auxiliary frame 16 is just parallel to the ground. The rotation limit block 15 is stopped, and the card plate 7 is inserted into the card slot 6. The hand screw 8 is reset to limit the card plate 7, and the brake wheel 9 is braked. The unfolding of the outer frame and the inner support frame is completed. Then, the top plate 17 is removed from the connecting frame 1 on one side and placed on the two connecting frames 1. The scaffold can then be used. The reverse operation can be used to fold and retract the scaffold.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A foldable scaffolding, comprising a top plate, characterized in that, It also includes an outer frame and an inner support frame. The outer frame is located outside the inner support frame and is situated between the four bottom corners of the top plate and the ground. It is used to support the entire top plate. The inner support frame is situated between the middle part of the top plate and the ground. It is used to support the middle part of the top plate. The outer frame includes two parallel and spaced connecting frames (1), two sets of scissor telescopic frames, brake wheels (9), and a fixed frame (4). The connecting frames (1) are located on the underside of the top plate. The lower end of the connecting frames (1) is rotatably equipped with brake wheels (9). The two sets of scissor telescopic frames are rotatably installed between the two connecting frames (1). The movable end of the scissor telescopic frame is movably connected to the fixed frame (4). The fixed frame (4) is provided with a limit structure. The fixed frame (4) is located on the side of the connecting frame (1) close to the scissor telescopic frame. The inner support frame includes a sleeve rod (10), a movable rod (11), a second hand screw (12), two auxiliary support members arranged side by side and spaced apart, and two support seats (13). The sleeve rod (10) is movably sleeved on the outside of the upper end of the movable rod (11). The second hand screw (12) is located at the connection between the sleeve rod (10) and the movable rod (11) and limits the movable rod (11). Two auxiliary support members are movably mounted on the sleeve rod (10). The fixed end of the auxiliary support member is rotatably mounted on the connecting frame (1) and is rotatably connected to the connecting frame (1) through the auxiliary support member, thereby driving the two connecting frames (1) to move horizontally and adjusting the distance between the two connecting frames (1). Two support seats (13) are respectively fixed at the upper end of the sleeve rod (10) and the lower end of the movable rod (11) and support the top plate.

2. The foldable scaffolding according to claim 1, characterized in that: The top plate component includes a top plate (17) and a suspension block (18). There are two suspension blocks (18) arranged side by side with a gap between them. The suspension block (18) is located below one end of the top plate (17) and is fixed on the top plate (17).

3. A foldable scaffolding according to claim 1, characterized in that: Each of the connecting frames (1) includes two hollow columns and multiple crossbars. The two hollow columns are arranged side by side and spaced apart. The multiple crossbars are arranged in a linear array from top to bottom and are fixed between the two hollow columns. Each hollow column is equipped with a rotatable brake wheel (9) at its lower end, and each hollow column is fixed with a bracket (4) on the side near the scissor telescopic frame.

4. A foldable scaffolding according to claim 3, characterized in that: Two sets of scissor-type telescopic frames are rotatably set between two hollow columns on the same horizontal line in two connecting frames (1); Each scissor telescopic frame includes two rotatable cross-connecting connecting rods (2). The fixed ends of the two connecting rods (2) are rotatably connected to the hollow column on the corresponding side, and the movable ends of the two connecting rods (2) are slidably connected to the fixed frame (4) on the hollow column on the opposite side. The movable ends of the connecting rods (2) are rotatably connected to a connecting block (3).

5. A foldable scaffolding according to claim 4, characterized in that: Each of the aforementioned limiting structures includes a locking plate (7) and a hand screw (8). The locking plate (7) is an inverted L-shape and is located outside the connecting block (3) located in the lower part of the fixing frame (4). The upper end of the locking plate (7) is inserted into the two plates in the fixing frame (4). The hand screw (8) passes through the side end of the locking plate (7) and is threadedly connected to the two plates. The upper and lower parts of the two plates are provided with locking grooves (6) that are compatible with the locking plate (7).

6. A foldable scaffold according to claim 5, characterized in that: The fixing frame (4) includes two plates arranged side by side and spaced apart. Each plate has a groove (5) that is compatible with the connecting block (3). Each connecting block (3) is set on the groove (5) on the corresponding side and can slide along the groove (5).

7. A foldable scaffolding according to claim 1, characterized in that: Each of the auxiliary support components includes a slider (14), a limiting block (15), and two auxiliary frames (16). The limiting block (15) is rotatably disposed on one end of the slider (14) near the second hand screw (12) and is threadedly connected to the sleeve rod (10). The sleeve rod (10) has four external threads arranged side by side and spaced apart on its outer circumference. The limiting block (15) has an internal thread groove on its inner side. Two auxiliary frames (16) are symmetrically arranged on both sides of the slider (14). The fixed ends of the two auxiliary frames (16) are rotatably connected to the connecting frame (1) on the corresponding side, and the movable ends of the two auxiliary frames (16) are rotatably connected to both sides of the slider (14).

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