Modular assembled ladder

Abstract

The utility model discloses a modularization assembly formula cat ladder, including four frame pole body and a plurality of treads, every the tread four corners position all rotatoryly established have connected fastener, every the connected fastener all with corresponding frame pole body detachable connection, every frame pole body bottom all detachable connection has adjustable support foot, every the tread bottom surface four corners position all fixedly connected with connecting bolt, every the connecting bolt all extends to the tread outside, every the connected fastener includes two arc clamps, two arc clamps one end interlink, two arc clamps other end on set up the locking mechanism of mutual cooperation, the arc clamp outer wall of one side close to the tread is passed through and is set up and is connected the hole, the hole in the movable insertion has corresponding connecting bolt, through connected fastener connects a plurality of treads with four frame pole body, realizes the flexible adjustment of tread angle and position, guarantees the connection stability and modularization assembly convenient.

Description

Technical Field

[0001] This utility model relates to the field of construction tools, and more specifically, to a modular assembly ladder. Background Technology

[0002] In many industrial and construction fields, ladders are often needed for vertical personnel access. Traditional ladders are mostly fixed, with fixed angles and steps after installation, making them unable to flexibly adapt to different work environments and their required inclination angles. When faced with scenarios such as construction sites with complex terrain or irregular building structures, fixed ladders cannot be easily adjusted, leading to limited use or even malfunction.

[0003] How to invent a modular, assembled ladder to improve these problems has become an urgent issue for those skilled in the art. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a modular assembly ladder, which aims to improve the problem that traditional fixed structure ladders cannot flexibly adapt to the spatial layout and tilt angle requirements of different working environments, cannot be easily adjusted, resulting in limited use or even inability to be used normally.

[0005] This utility model is implemented as follows: A modular, assembled ladder includes four frame rods and several steps. Each step has a connecting fastener rotatably installed at each of its four corners. Each connecting fastener is detachably connected to the corresponding frame rod. Each frame rod has an adjustable support foot detachably connected to its bottom end. Each step has a connecting bolt fixedly connected at each of its four corners on its bottom surface. Each connecting bolt extends outward from the step. Each connecting fastener includes two arc-shaped clamps. One end of the two arc-shaped clamps is hinged to each other. The other end of the two arc-shaped clamps is provided with a locking mechanism that can cooperate with each other. A connecting hole is provided through the outer wall of the arc-shaped clamp near the step, and a corresponding connecting bolt is movably inserted into the connecting hole.

[0006] In a preferred embodiment of this utility model, a recessed groove with a diameter larger than that of the connecting hole is coaxially formed on the inner wall of the arc-shaped clamp on one side where the connecting hole is provided, corresponding to the opening position inside the connecting hole. An angle limiting nut is provided in the recessed groove, and the angle limiting nut is threadedly connected to the corresponding connecting bolt.

[0007] In a preferred embodiment of this utility model, the locking mechanism includes a T-shaped rod and a locking groove. The two ends of the T-shaped rod located on the same axis are rotatably connected to the ends of the corresponding arc-shaped clamps. The outer wall of the other end of the T-shaped rod is provided with threads. The locking groove is opened at the end of another arc-shaped clamp. A fastening threaded sleeve is provided in the locking groove. The fastening threaded sleeve is threadedly connected to the threaded end of the T-shaped rod.

[0008] In a preferred embodiment of this utility model, the gap at the opening of the locking groove is smaller than the outer diameter of the fastening threaded sleeve and larger than the outer diameter of the threaded end of the T-shaped rod.

[0009] In a preferred embodiment of this utility model, each adjustable support leg includes a connecting sleeve that is sleeved with the bottom end of the frame rod. The bottom end of the connecting sleeve is rotatably connected to an anti-slip base. The top opening of the connecting sleeve is symmetrically provided with deformation grooves extending to its bottom end on both sides. Each deformation groove is provided with a clamping mechanism on both sides.

[0010] In a preferred embodiment of this utility model, each clamping mechanism includes two connecting lugs. The two connecting lugs are integrally formed and distributed in parallel on the outer wall of the corresponding side of the connecting sleeve. One end of each connecting lug corresponds to the outer edges of the corresponding deformation groove. A through hole is provided on one side surface of each connecting lug. A clamping bolt is inserted into the two through holes, and a fastening nut is threaded to one end of the clamping bolt.

[0011] In a preferred embodiment of this utility model, support rods are symmetrically arranged on both sides of the upper surface of the anti-slip base. A rotating hole is opened on one side of the end of each support rod. A connecting shaft is provided in each rotating hole. One end of the two connecting shafts is fixedly connected to the outer walls on both sides of the bottom end of the connecting sleeve. The outer wall of the other end of each connecting shaft is threaded and connected to an abutment nut through the thread.

[0012] The beneficial effects of this utility model are as follows: The modular assembly ladder obtained by the above design can be used to flexibly adjust the angle of the steps by rotating the connecting bolts at the four corners of the steps and the connecting fasteners and locking the angle. The arc-shaped clamping plate is used to clamp the frame rod to ensure a stable connection. At the same time, the adjustable feet at the bottom of the frame rod make the ladder adjustable in angle, adaptable to different ground, stable in connection and convenient in modular assembly. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic perspective view of the overall structure provided by the embodiment of this utility model; Figure 2 A perspective view of the overall structure of the pedal provided for an embodiment of this utility model; Figure 3 A perspective view of the overall structure of the connecting fastener provided for an embodiment of this utility model; Figure 4 A perspective view of the adjustable support leg detachable structure provided for the embodiment of this utility model.

[0015] In the diagram: 1-Frame rod; 2-Pedal; 3-Connecting fastener; 4-Adjustable support leg; 201-Connecting bolt; 301-Arc-shaped clamp; 302-Connecting hole; 303-Angle limiting nut; 304-T-shaped rod; 305-Locking groove; 306-Fastening threaded sleeve; 401-Connecting sleeve; 402-Anti-slip base; 403-Deformation groove; 404-Connecting ear plate; 405-Clamping bolt; 406-Fastening nut; 407-Connecting shaft; 408-Support rod; 409-Abutment nut. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Please see Figures 1 to 4This utility model provides a technical solution: a modular assembly ladder, including four frame rods 1 and several steps 2. Each step 2 has a connecting fastener 3 rotatably installed at each of its four corners. Each connecting fastener 3 is detachably connected to the corresponding frame rod 1. Each frame rod 1 has an adjustable support foot 4 detachably connected to its bottom end. Each step 2 has a connecting bolt 201 fixedly connected at each of its four corners on its bottom surface. Each connecting bolt 201 extends outward from the step 2. Each connecting fastener 3 includes two arc-shaped clamps 301. One end of the two arc-shaped clamps 301 is hinged to each other. The other end of the two arc-shaped clamps 301 is provided with a locking mechanism that can cooperate with each other. A connecting hole 302 is provided through the outer wall of the arc-shaped clamp 301 near the step 2. A corresponding connecting bolt 201 is movably inserted into the connecting hole 302.

[0018] Please see Figure 2 and Figure 3 On the inner wall of the arc-shaped clamping plate 301 with the connection hole 302, a recessed groove with a diameter larger than the connection hole 302 is coaxially opened at the position of the internal opening of the connection hole 302. An angle limiting nut 303 is provided in the recessed groove, and the angle limiting nut 303 is threadedly connected to the corresponding connecting bolt 201.

[0019] After adjusting the angle of the connecting fastener 3, tighten the angle limiting nut 303 to make it press against the arc-shaped clamping plate 301, clamping the connecting fastener 3 onto the outer wall of the pedal 2. The mechanical limiting of the angle limiting nut 303 prevents the connecting fastener 3 from shifting its angle due to load during use, ensuring the stability and safety of the ladder structure. At the same time, the recessed groove design prevents the end of the connecting bolt 201 from protruding from the inner wall of the arc-shaped clamping plate 301, avoiding affecting its clamping effect on the frame rod 1.

[0020] Furthermore, the locking mechanism includes a T-shaped rod 304 and a locking groove 305. The two ends of the T-shaped rod 304 are rotatably connected to the ends of the corresponding arc-shaped clamping plates 301 on the same axis. The outer wall of the other end of the T-shaped rod 304 is provided with threads. The locking groove 305 is opened at the end of another arc-shaped clamping plate 301. A fastening threaded sleeve 306 is provided in the locking groove 305. The fastening threaded sleeve 306 is threadedly connected to the threaded end of the T-shaped rod 304.

[0021] After placing the frame rod 1 between the two arc-shaped clamping plates 301, rotate the T-shaped rod 304 so that its threaded end enters the locking groove 305, and then tighten the fastening threaded sleeve 306 so that the flange at its end abuts against the outer wall of the arc-shaped clamping plate 301, clamping the frame rod 1. The reliable clamping of the frame rod 1 is achieved through the threaded engagement between the T-shaped rod 304 and the fastening threaded sleeve 306. Disassembly is simple; just loosen the fastening threaded sleeve 306. The operation is convenient, and the hinged arc-shaped clamping plate 301 can accommodate frame rods 1 of different diameters, improving versatility.

[0022] Furthermore, the gap at the opening of the locking groove 305 is smaller than the outer diameter of the fastening threaded sleeve 306 and larger than the outer diameter of the threaded end of the T-shaped rod 304.

[0023] The gap at the opening of the locking groove 305 is smaller than the outer diameter of the fastening threaded sleeve 306 but larger than the outer diameter of the threaded end of the T-shaped rod 304. This ensures that after the fastening threaded sleeve 306 is inserted into the locking groove 305, it cannot be dislodged from the opening and can only be threadedly connected to the T-shaped rod 304 within the locking groove 305. This ensures that the fastening threaded sleeve 306 will not accidentally fall off during the locking process, preventing connection failure between the connecting fastener 3 and the frame rod 1, and improving the safety and stability of the ladder.

[0024] Please see Figure 4 Each adjustable support leg 4 includes a connecting sleeve 401 that is sleeved at the bottom end of the frame rod 1. The bottom end of the connecting sleeve 401 is rotatably connected to an anti-slip base 402. The top opening of the connecting sleeve 401 is symmetrically provided with deformation grooves 403 extending to its bottom end on both sides. Each deformation groove 403 is provided with a clamping mechanism on both sides.

[0025] The adjustable support leg 4 includes a connecting sleeve 401 that fits onto the bottom end of the frame rod 1. The bottom end of the connecting sleeve 401 is rotatably connected to an anti-slip base 402. Deformation grooves 403 extending towards the bottom are provided on both sides of the opening at the top of the connecting sleeve 401. Clamping mechanisms are provided on both sides of the deformation grooves 403. By adjusting the position of the connecting sleeve 401 on the frame rod 1, the anti-slip base 402 adapts to different ground heights, and the clamping mechanisms then fix the connecting sleeve 401 in place. The adjustable support leg 4 can adjust its height according to ground conditions, keeping the ladder level and improving stability on uneven ground. Simultaneously, the rotatably connected anti-slip base 402 can adapt to different ground angles, enhancing the ladder's environmental adaptability.

[0026] Furthermore, each clamping mechanism includes two connecting ear plates 404. The two connecting ear plates 404 are integrally formed and distributed in parallel on the outer wall of the corresponding side of the connecting sleeve 401. One end of the two connecting ear plates 404 corresponds to the outer edges of the corresponding deformation groove 403. Each connecting ear plate 404 has a through hole on one side surface. A clamping bolt 405 is inserted into the two holes. One end of the clamping bolt 405 is threaded with a fastening nut 406.

[0027] When the fastening nut 406 is loosened, the gap in the connecting ear plate 404 increases, allowing the connecting sleeve 401 to slide on the frame rod 1. When tightened, the gap in the connecting ear plate 404 decreases, and the connecting sleeve 401 clamps the frame rod 1 through the deformation groove 403. This allows for convenient and quick adjustment of the position of the connecting sleeve 401, enabling rapid adjustment of the ladder height according to ground conditions, ensuring stable support. Furthermore, the structure is simple and easy to manufacture and install.

[0028] Furthermore, support rods 408 are symmetrically arranged on both sides of the upper surface of the anti-slip base 402. Each support rod 408 has a rotating hole on one side of its end. Each rotating hole has a connecting shaft 407. One end of the two connecting shafts 407 is fixedly connected to the outer walls of the bottom two sides of the connecting sleeve 401. The outer wall of the other end of each connecting shaft 407 is threaded and connected to an abutment nut 409 through the thread.

[0029] The anti-slip base 402 can rotate around the connecting shaft 407. After adjusting to a suitable angle, tighten the abutment nut 409 to press it against the support rod 408, so that the end surfaces of the support rods 408 on both sides clamp the outer walls of the bottom ends of the connecting sleeve 401, limiting the angle of the anti-slip base 402. The anti-slip base 402 can rotate to adapt to different angles of ground such as slopes and steps, ensuring full contact with the ground and providing reliable support. The angle limiting structure can prevent the anti-slip base 402 from rotating under load during use, ensuring the overall stability of the ladder and improving safety.

[0030] Working principle: The ladder skeleton is formed by four frame rods 1. The connecting bolts 201 at the four corners of several pedals 2 are inserted into the connecting holes 302 of the connecting fasteners 3, so that the pedals 2 are rotatably connected to the connecting fasteners 3. After adjusting the angle, the angle limiting nut 303 is locked in the recessed groove. Then, the frame rod 1 is placed between two arc-shaped clamping plates 301 and clamped by the locking mechanism composed of T-shaped rod 304 and fastening threaded sleeve 306, realizing the detachable connection and angle adjustment of the pedals 2 and the frame rod 1. The bottom end of the frame rod 1 is fitted with the connecting sleeve 401. The clamping bolt 405 and the fastening nut 406 cooperate with the clamping mechanism to fix the connecting sleeve 401 on the frame rod 1. The bottom end of the connecting sleeve 401 is rotatably connected to the anti-slip base 402 through the connecting shaft 407. After adjusting the angle, the abutment nut 409 is used to limit the angle, so as to adjust the height and angle of the adjustable support 4 according to the ground conditions, so that the ladder remains horizontal and stable, realizing the functions of modular assembly, angle adjustment and adaptation to different ground conditions.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular, assembled ladder, characterized in that, The device includes four frame rods and several pedals. Each pedal has a connecting fastener rotatably mounted at each of its four corners. Each connecting fastener is detachably connected to the corresponding frame rod. Each frame rod has an adjustable support foot detachably connected to its bottom end. Each pedal has a connecting bolt fixedly mounted at each of its four corners on its bottom surface. Each connecting bolt extends outward from the pedal. Each connecting fastener includes two arc-shaped clamps. One end of the two arc-shaped clamps is hinged to each other. The other end of the two arc-shaped clamps is provided with a locking mechanism that can cooperate with each other. A connecting hole is provided through the outer wall of the arc-shaped clamp near the pedal, and a corresponding connecting bolt is movably inserted into the connecting hole.

2. The modular assembly ladder as described in claim 1, characterized in that: On the inner wall of the arc-shaped clamp plate with the connection hole, a recessed groove with a diameter larger than the connection hole is coaxially formed at the position corresponding to the opening of the connection hole. An angle limiting nut is provided in the recessed groove, and the angle limiting nut is threadedly connected to the corresponding connecting bolt.

3. The modular assembly ladder as described in claim 1, characterized in that: The locking mechanism includes a T-shaped rod and a locking groove. The two ends of the T-shaped rod located on the same axis are rotatably connected to the ends of the corresponding arc-shaped clamps. The outer wall of the other end of the T-shaped rod is provided with threads. The locking groove is opened at the end of another arc-shaped clamp. A fastening threaded sleeve is provided in the locking groove. The fastening threaded sleeve is threadedly connected to the threaded end of the T-shaped rod.

4. The modular assembly ladder as described in claim 3, characterized in that: The gap at the opening of the lock groove is smaller than the outer diameter of the fastening threaded sleeve and larger than the outer diameter of the threaded end of the T-shaped rod.

5. The modular assembly ladder as described in claim 1, characterized in that: Each of the adjustable legs includes a connecting sleeve that fits onto the bottom end of the frame rod. The bottom end of the connecting sleeve is rotatably connected to an anti-slip base. The top opening of the connecting sleeve has symmetrical deformation grooves extending to its bottom end on both sides. Each deformation groove has a clamping mechanism on both sides.

6. The modular assembly ladder as described in claim 5, characterized in that: Each clamping mechanism includes two connecting lugs, which are integrally formed and distributed in parallel on the outer wall of the corresponding side of the connecting sleeve. One end of each connecting lug corresponds to the outer edges of the corresponding deformation groove. Each connecting lug has a through hole on one side surface, and a clamping bolt is inserted into the two holes. One end of the clamping bolt is threaded with a fastening nut.

7. The modular assembly ladder as described in claim 5, characterized in that: The anti-slip base has symmetrical support rods on both sides of its upper surface. Each support rod has a rotating hole on one side of its end. Each rotating hole has a connecting shaft. One end of each connecting shaft is fixedly connected to the outer wall of the bottom end of the connecting sleeve. The other end of each connecting shaft has a thread and is connected to a stop nut.

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