A detachable ladder

Abstract

This utility model discloses a detachable ladder, relating to the field of construction equipment technology. The detachable ladder includes a top plate and fixed frames. Two sets of fixed frames are arranged side-by-side at intervals and are rotatably mounted at the bottom of the top plate. It also includes two support columns, movable plates, snap-fit ​​structures, and crossbars. Four support columns are provided and movably inserted into the fixed frames. Multiple movable plates are arranged in a linear array from top to bottom, with snap-fit ​​structures at both ends. The movable plates are connected to the fixed frames and support columns via these snap-fit ​​structures. The crossbars are located at the top of the top plate. A support structure is provided between the two sets of fixed frames, with two sets arranged side-by-side at intervals, used to support and limit the movement of the two sets of fixed frames after they are unfolded. This utility model can adapt to working scenarios at different heights, has strong applicability, and is easy to disassemble and install without complex tools. It can be operated by a single person, is multi-functional, flexible, and versatile.

Description

Technical Field

[0001] This utility model relates to the field of building equipment technology, specifically a detachable ladder. Background Technology

[0002] A climbing ladder is a tool for ascending heights, consisting of multiple steps and supporting structures on both sides (uprights). The steps and uprights are fixedly or movably connected to form a passageway for people to climb up and down. It typically has a certain load-bearing capacity and stability, and is often made of metal (such as steel or aluminum alloy), wood, or composite materials. Depending on the usage scenario, it can be designed as a fixed, detachable, or foldable structure.

[0003] Ladders have a wide range of applications. In the construction industry, they can meet the temporary access needs of construction workers during building, decoration, and maintenance. In industrial production, they facilitate the inspection, maintenance, and debugging of large machinery, boilers, and other equipment. In warehousing and logistics, they can assist workers in climbing to higher shelves in small and medium-sized warehouses to access goods. In municipal engineering, they are suitable for the construction and maintenance of infrastructure such as roads, bridges, and tunnels, such as street light repair and bridge inspection. In daily household life, they can be used for changing light bulbs and cleaning high places, and the small and lightweight models are easy to store. In emergency rescue, they can also serve as temporary access routes to help rescuers work or for trapped people to escape.

[0004] Existing ladders have a fixed height and cannot be adjusted to meet different work height requirements. Furthermore, traditional ladders often have a fixed structure or require special tools and a lot of manpower for disassembly and installation, making them inconvenient to install and disassemble. Therefore, improving the functionality and ease of disassembly and installation of ladders is an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the background art by providing a detachable ladder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A detachable ladder includes a top plate and fixed frames. Two sets of fixed frames are arranged side-by-side and spaced apart, and are rotatably mounted at the bottom of the top plate. The ladder also includes two support columns, movable plates, snap-fit ​​structures, and crossbars. Four support columns are provided and movably inserted into the fixed frames. Multiple movable plates are arranged in a linear array from top to bottom. Each end of a movable plate has a snap-fit ​​structure, which connects the movable plate to the fixed frames and the two support columns. The crossbars are located at the top of the top plate and are used to connect the multiple support columns. A support structure is provided between the two sets of fixed frames. Two sets of support structures are arranged side-by-side and spaced apart, and are used to support and limit the movement of the two sets of fixed frames after they are unfolded. The snap-fit ​​structure includes a snap-fit ​​component, a rotating block, a protruding ring, a fixed block, and an insert rod. The rotating block is rotatably mounted in the fixed block, and the fixed block is fixed in the two support columns. One end of the snap-fit ​​component is detachably inserted into the rotating block and the fixed block. The protruding ring and the insert rod are both fixed in the fixed block and limit the snap-fit ​​component.

[0007] Furthermore, the two sets of fixing frames have different widths. Each fixing frame includes two parallel and spaced-apart support columns. Between the two support columns, there are multiple fixing plates arranged linearly from top to bottom. The two ends of each fixing plate are fixed to the two support columns.

[0008] Furthermore, the two sets of support structures are respectively set between the relatively close support columns of the two sets of fixed frames. The support structure includes a movable rod, a slide rail, a slider, and a limiting screw. One end of the movable rod is rotatably mounted on the support column of one set of fixed frames, and the other end of the movable rod is fixedly provided with a slider. The slide rail is fixedly mounted on the corresponding support column of the other set of fixed frames, and the slider is slidably connected to the slide rail. The limiting screw is rotatably passed through the slider, and its thread extends to the slide rail. The slide rail has two threaded holes, one above the other, that are adapted to the limiting screw.

[0009] Furthermore, a storage box is fixedly provided at the bottom of the top plate, and both ends of the crossbar are respectively provided with external threads and connected with connecting nuts, so that the crossbar can be moved and stored in the storage box.

[0010] Furthermore, the snap-fit ​​component includes a connecting rod and a snap-fit ​​block. The connecting rod is movably disposed at the end of the movable plate, with one end extending into the movable plate. The snap-fit ​​block is fixed at the other end of the connecting rod and inserted into the rotating block in the fixed block. The inner sides of the first and second support columns are respectively provided with snap-fit ​​grooves that are compatible with the snap-fit ​​block. The other end of the snap-fit ​​block is provided with an insertion hole that is compatible with the insertion rod.

[0011] Furthermore, the snap-fit ​​component also includes a threaded post and a limiting nut. The threaded post is fixed below the middle position of the connecting rod and extends from inside the movable plate to below the movable plate. The limiting nut is threaded on the threaded post and is located below the movable plate.

[0012] Furthermore, the convex ring and the insert rod are respectively fixed inside the fixed block at the end away from the movable plate. The convex ring has a connecting hole that matches the locking block, and the insert rod is located in the connecting hole on the convex ring.

[0013] Compared with the prior art, the present invention provides a detachable ladder, which has the following advantages: This detachable ladder is height-adjustable through the plug-in connection between support column one and support column two, making it adaptable to different work scenarios and highly versatile. The movable plate is connected to the fixed frame and support column two via a snap-fit ​​structure. The plug-in design of support column two makes the overall disassembly and installation convenient, requiring no complicated tools and can be operated by a single person. It can also be disassembled into two shorter ladders, achieving multiple uses with one ladder, making it flexible and versatile. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the first support column, the second support column, and the fixing block of this utility model; Figure 3 This is a schematic diagram of the connection between the connecting rod and the movable plate, and the connection between the connecting rod and the fixed block of this utility model; Figure 4 This is an exploded view of the locking block, rotating block, convex ring, and fixing block of this utility model; Figure 5 This is a schematic diagram of the supporting structure of this utility model; Figure 6 This is a schematic diagram of the ladder structure formed by the disassembled fixing frame and the top plate of this utility model; Figure 7 This is a schematic diagram of the ladder structure formed by the second support column after disassembly of this utility model; Figure 8 This utility model Figure 3 A schematic diagram of the structure at point A in the middle.

[0015] In the diagram: 1. Top plate; 2. Support column one; 3. Support column two; 4. Fixed plate; 5. Movable plate; 6. Connecting rod; 7. Locking block; 8. Rotating block; 9. Protruding ring; 10. Fixed block; 11. Insert rod; 12. Threaded column; 13. Limit nut; 14. Movable rod; 15. Slide rail; 16. Slider; 17. Limit screw; 18. Storage box; 19. Crossbar. Detailed Implementation

[0016] 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.

[0017] Figures 1-8 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-8 The present invention will be further described below.

[0018] See attached document Figures 1-8 This utility model discloses a detachable ladder, including a top plate 1, a fixed frame, two support columns 3, movable plates 5, a snap-fit ​​structure, and a crossbar 19. The fixed frame is arranged in two sets side by side with intervals and is rotatably set at the bottom of the top plate 1. There are four support columns 3, which are movably inserted into the fixed frame. Multiple movable plates 5 are arranged in a linear array from top to bottom. Each end of the movable plate 5 is provided with a snap-fit ​​structure. The movable plate 5 is connected to the fixed frame and the support columns 3 through the snap-fit ​​structure. The crossbar 19 is located at the top of the top plate 1 and is used to connect multiple support columns 3.

[0019] Among them, the two sets of fixing frames have different widths. The fixing frame includes two parallel and spaced pillars 2. Between the two pillars 2, there are multiple fixing plates 4 arranged linearly from top to bottom. The two ends of the fixing plates 4 are respectively fixed on the two pillars 2.

[0020] A storage box 18 is fixedly installed at the bottom of the top plate 1. Both ends of the crossbar 19 are provided with external threads and connected with connecting nuts. The crossbar 19 can be moved and stored in the storage box 18.

[0021] Support column 2 (3) is plugged into support column 1 (2). Support column 2 (3) is inserted into support column 1 (2) from the lower end. The position of support column 2 (3) can be adjusted according to the user's needs, thereby adjusting the overall height of the ladder and improving the applicability of the device. Because the widths of the two sets of fixing frames are different, the width between support columns 2 (3) connected to the two sets of fixing frames is also different. Therefore, the widths of the movable plate 5 and the fixed plate 4 installed on the two sets of fixing frames are also different. The main difference is that the widths of the movable plate 5 and the fixed plate 4 installed on one set of fixing frames are longer than those installed on the other set of fixing frames.

[0022] Because of the plug-in connection between support column 2 (3) and support column 1 (2), support column 2 (3) can be removed. The four support columns 2 (3) can be placed back in their original positions, and the crossbar 19 can be removed and inserted into the upper part of the four support columns 2 (3). A connecting nut can be installed on the threaded end of the crossbar 19 to limit the position of support column 2 (3). A strap can be used to connect one movable plate 5 on one side to another movable plate 5 on the same horizontal line on the other side. Support column 2 (3) can then be removed to form a shorter ladder. The remaining top plate 1 and the two sets of fixing frames can be lowered to form a shorter ladder for continued use. A taller ladder can be split into two shorter ladders as needed, offering flexibility.

[0023] A support structure is provided between the two sets of fixed frames. The support structure is arranged side by side with two sets spaced apart, and is used to support and limit the two sets of fixed frames after they are unfolded.

[0024] Specifically, two sets of support structures are respectively set between the relatively close pillars 2 of the two sets of fixed frames. The support structure includes a movable rod 14, a slide rail 15, a slider 16 and a limiting screw 17. One end of the movable rod 14 is rotatably mounted on the pillar 2 in one set of fixed frames, and the other end of the movable rod 14 is fixedly provided with a slider 16. The slide rail 15 is fixedly mounted on the corresponding pillar 2 in the other set of fixed frames, and the slider 16 is slidably connected to the slide rail 15.

[0025] The limiting screw 17 is rotatably inserted through the slider 16 and its threads extend to the slide rail 15. The slide rail 15 has two threaded holes that are adapted to the limiting screw 17.

[0026] In this embodiment, the slide rail 15 has a groove adapted to the slider 16. When the ladder is not in use, the movable rod 14 tilts from bottom to top from the fixed end to the movable end. At this time, the slider 16 is located at the upper threaded hole, and the limiting screw 17 passes through the slider 16 and is screwed into the upper threaded hole to limit the slider 16. When the ladder is in use, the movable rod 14 moves to a horizontal position. At this time, the slider 16 is located at the lower threaded hole, and the limiting screw 17 passes through the slider 16 and is screwed into the lower threaded hole to limit the slider 16, ensuring the stability of the ladder after it is deployed.

[0027] The snap-fit ​​structure includes a snap-fit ​​component, a rotating block 8, a protruding ring 9, a fixing block 10, and an insert rod 11. The rotating block 8 is rotatably disposed in the fixing block 10, and the fixing block 10 is fixed in the support column 2 3. One end of the snap-fit ​​component is detachably inserted into the rotating block 8 and the fixing block 10. The protruding ring 9 and the insert rod 11 are both fixed in the fixing block 10 and limit the snap-fit ​​component.

[0028] Specifically, the snap-fit ​​component includes a connecting rod 6 and a snap-fit ​​block 7. The connecting rod 6 is movably disposed at the end of the movable plate 5, with one end extending into the movable plate 5. The snap-fit ​​block 7 is fixed at the other end of the connecting rod 6 and is inserted into the rotating block 8 in the fixed block 10. The inner side of the first support column 2 and the inner side of the second support column 3 are respectively provided with snap-fit ​​grooves that are compatible with the snap-fit ​​block 7. The other end of the snap-fit ​​block 7 is provided with an insertion hole that is compatible with the insertion rod 11.

[0029] The snap-fit ​​component also includes a threaded post 12 and a limiting nut 13. The threaded post 12 is fixed below the middle position of the connecting rod 6 and extends from the inside of the movable plate 5 to the bottom of the movable plate 5. The limiting nut 13 is threaded on the threaded post 12 and is located below the movable plate 5.

[0030] The protruding ring 9 and the insert rod 11 are respectively fixed inside the fixed block 10 at the end away from the movable plate 5. The protruding ring 9 has a connection hole that matches the card block 7, and the insert rod 11 is located in the connection hole on the protruding ring 9.

[0031] In this embodiment, the rotating block 8 and one end of the fixed block 10 are respectively provided with a slot that matches the locking block 7. The bottom of the movable plate 5 is provided with an adjustment groove that matches the threaded column 12. The limiting nut 13 is attached to the bottom of the movable plate 5 and is used to limit the connecting rod 6 and the locking block 7.

[0032] When installing the movable plate 5, align the locking blocks 7 at both ends of the movable plate 5 with the slots on the first support column 2 and the second support column 3. At this time, the locking blocks 7 are vertical, and the connecting holes on the convex ring 9 are horizontal. Push the threaded column 12 to move the locking blocks 7 into the first support column 2 and the second support column 3, passing through the slots on the first support column 2 and the second support column 3. The locking blocks 7 are then inserted into the slot on the rotating block 8. At this time, the connecting holes on the convex ring 9 and the slots on the rotating block 8 are misaligned, blocking the movement of the locking blocks 7. When the locking blocks 7 can no longer move, the locking blocks 7 are... Rotate the movable plate 5 90 degrees, causing the locking block 7 to drive the rotating block 8 to rotate 90 degrees. The locking block 7 rotates to a horizontal position, at which point the connecting hole on the convex ring 9 aligns with the slot on the rotating block 8. However, the slots on the locking block 7 and rotating block 8 are misaligned with the slot on the fixed block 10. Continue moving the locking block 7 via the threaded post 12 until its front end inserts into the connecting hole on the convex ring 9 and locks against the outside of the insertion rod 11. This completes the limiting installation of the locking block 7. Then tighten the limiting nut 13 to press the bottom of the movable plate 5, limiting the connection rod 6. Repeat the operation on the other end to complete the installation of the movable plate 5. This allows for easy disassembly and installation of the movable plate 5 as needed, facilitating its use.

[0033] During use, if disassembly is not required, adjust the position of support column 2 3 according to the user's needs and the desired height. During adjustment, the slots on support column 1 2 and support column 2 3 should always be aligned. After adjustment, place the movable plate 5 at the lowest slot of the aligned slots on support column 1 2 and support column 2 3, align the locking block 7 with the slot, and push the threaded column 12 to move the locking block 7 into support column 1 2 and support column 2 3, passing through the slots on support column 1 2 and support column 2 3. The locking block 7 is then inserted into the slot on the rotating block 8. Then, rotate the locking block 7 and the movable plate 5 ninety degrees, so that the locking block 7 drives the rotating block 8 to rotate ninety degrees. The locking block 7 rotates to a horizontal position. Move the locking block 7 through the threaded column 12 so that the front end of the locking block 7 is inserted into the connecting hole on the convex ring 9 and locked to the outside of the insertion rod 11. This completes the limiting installation of the locking block 7. Then tighten the limiting nut 13 to limit the connecting rod 6. Repeat the operation on the other end to complete the installation of the movable plate 5. Repeat the operation to complete the installation of the movable plate 5 between the two support columns 2 3 below.

[0034] After the movable plate 5 is installed, unscrew the limit screw 17 outwards, unfold the two support pillars 12 to the sides, rotate the movable rod 14 to a horizontal position, and move the slider 16 down to the threaded hole below. The limit screw 17 passes through the slider 16 and is screwed into the threaded hole below to limit the slider 16. The ladder adjustment is completed and it can be used.

[0035] If it is necessary to split it into two shorter ladders, take out the crossbar 19 from the storage box 18, take out the second support column 3, place the four second support columns 3 in their original positions, and put the two second support columns 3 on both sides onto the crossbar 19 from the corresponding ends of the crossbar 19. Install the connecting nut on the threaded end of the crossbar 19 to limit the second support columns 3 on both sides. Take a strap and connect one movable plate 5 on one side to one movable plate 5 on the same horizontal line on the other side. This will allow the second support column 3 and the two sets of fixing frames to be split into two shorter ladders.

[0036] 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 detachable ladder, comprising a top plate (1) and a fixing frame, wherein two sets of fixing frames are arranged side by side and spaced apart, and are rotatably disposed at the bottom of the top plate (1), characterized in that, It also includes support column 2 (3), movable plate (5), snap-fit ​​structure and crossbar (19). There are four support column 2 (3) and they can be movably inserted into the fixed frame. There are multiple movable plates (5) in a linear array from top to bottom. Both ends of the movable plate (5) are provided with snap-fit ​​structure. The movable plate (5) is connected to the fixed frame and support column 2 (3) through the snap-fit ​​structure. The crossbar (19) is located at the top of the top plate (1) and is used to connect multiple support column 2 (3). A support structure is provided between the two sets of fixed frames. The support structure is arranged side by side with two sets spaced apart, and is used to support and limit the two sets of fixed frames after they are unfolded. The snap-fit ​​structure includes a snap-fit ​​component, a rotating block (8), a protruding ring (9), a fixing block (10), and a plug rod (11). The rotating block (8) is rotatably disposed in the fixing block (10), and the fixing block (10) is fixed in the second support column (3). One end of the snap-fit ​​component is detachably inserted into the rotating block (8) and the fixing block (10). The protruding ring (9) and the plug rod (11) are both fixed in the fixing block (10) and limit the snap-fit ​​component.

2. The detachable ladder according to claim 1, characterized in that: The two sets of fixing frames have different widths. The fixing frame includes two parallel and spaced support columns (2). There are multiple fixing plates (4) arranged linearly from top to bottom between the two support columns (2). The two ends of the fixing plates (4) are respectively fixed on the two support columns (2).

3. A detachable ladder according to claim 2, characterized in that: The two sets of support structures are respectively set between the two sets of fixed frames and the relatively close support column (2). The support structure includes a movable rod (14), a slide rail (15), a slider (16) and a limiting screw (17). One end of the movable rod (14) is rotatably installed on the support column (2) in one set of fixed frames, and the other end of the movable rod (14) is fixedly provided with a slider (16). The slide rail (15) is fixedly installed on the corresponding support column (2) in another set of fixed frames, and the slider (16) is slidably connected to the slide rail (15). The limiting screw (17) is rotatably inserted through the slider (16) and its threads extend to the slide rail (15). The slide rail (15) has two threaded holes that are adapted to the limiting screw (17).

4. A detachable ladder according to claim 1, characterized in that: The top plate (1) is fixedly provided with a storage box (18) at the bottom. Both ends of the crossbar (19) are respectively provided with external threads and connected with connecting nuts. The crossbar (19) can be moved and stored in the storage box (18).

5. A detachable ladder according to claim 2, characterized in that: The snap-fit ​​component includes a connecting rod (6) and a snap-fit ​​block (7). The connecting rod (6) is movably disposed at the end of the movable plate (5) and one end extends into the movable plate (5). The snap-fit ​​block (7) is fixed at the other end of the connecting rod (6) and inserted into the rotating block (8) in the fixed block (10). The inner side of the first support column (2) and the inner side of the second support column (3) are respectively provided with a snap-fit ​​groove adapted to the snap-fit ​​block (7). The other end of the snap-fit ​​block (7) is provided with an insertion hole adapted to the insertion rod (11).

6. A detachable ladder according to claim 5, characterized in that: The snap-fit ​​component also includes a threaded post (12) and a limiting nut (13). The threaded post (12) is fixed below the middle position of the connecting rod (6) and extends from the inside of the movable plate (5) to the bottom of the movable plate (5). The limiting nut (13) is threaded on the threaded post (12) and is located below the movable plate (5).

7. A detachable ladder according to claim 6, characterized in that: The convex ring (9) and the insert rod (11) are respectively fixed inside the fixed block (10) at the end away from the movable plate (5). The convex ring (9) has a connection hole that matches the card block (7), and the insert rod (11) is located in the connection hole on the convex ring (9).

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