Hinge type modular detachable articulated ladder
By combining modular design with limiting components, the problem of inconvenient replacement of damaged hinge joints in hinged articulated ladders has been solved, enabling quick replacement and adaptive adjustment, thus improving the stability and flexibility of the ladder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LEADER IND &TRADE CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-24
AI Technical Summary
Existing hinged articulated ladders are inconvenient to replace when the hinge joints are damaged, and their installation is not compatible with different sizes of ladders, affecting stability and flexibility.
The modular design allows for a detachable connection between ladder one and ladder two through connecting and limiting components. Combined with a spring-loaded telescopic rod and a limiting ratchet, the tightness and stability of the hinged joint are ensured.
It enables quick replacement and adaptive adjustment of the hinged parts, improving the ladder's versatility and stability, and enhancing its flexibility and safety in use.
Smart Images

Figure CN224550006U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of articulated ladder technology, specifically to a hinged modular detachable articulated ladder. Background Technology
[0002] Hinged modular articulated ladders are designed for easy carrying and storage, and are particularly suitable for work environments where the length or shape needs to be flexibly adjusted for different scenarios. These ladders typically consist of multiple hinged sections that can rotate relative to each other, allowing users to configure them into different shapes as needed, such as a straight ladder, an A-frame ladder, or a work platform.
[0003] However, it is inconvenient to replace the hinge parts of articulated ladders when they are damaged. Also, they cannot be installed according to different sizes of ladders, resulting in the hinge parts of the articulated ladder being too large or too small, which can easily affect the stability of the ladder hinge parts.
[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content
[0005] In view of the problems in the related technologies, this utility model proposes a hinged modular detachable articulated ladder to overcome the above-mentioned technical problems existing in the existing related technologies.
[0006] Therefore, the specific technical solution adopted by this utility model is as follows:
[0007] A hinged modular detachable articulated ladder includes a ladder 1 and a ladder 2. One end of each ladder 1 and ladder 2 is provided with a connecting component. The connecting component includes an installation groove opened at one end of each ladder 1 and ladder 2. The inner wall of the installation groove and the surface of one end of each ladder 1 and ladder 2 are respectively provided with a connecting seat 1 and a connecting seat 2. A connecting groove is opened on one side of the connecting seat 1. A connecting rod passes through the inner wall of the connecting groove. The surface of the connecting rod is hinged to one end of the connecting seat 2. Multiple spring-loaded telescopic rods are provided on the inner walls of the connecting seat 1 and connecting seat 2. A clamping plate is fixed to one end of each spring-loaded telescopic rod. One side of the clamping plate is in contact with the installation groove and the surface of one end of each ladder 1 and ladder 2.
[0008] Furthermore, in order to better restrict the adjustment of the articulated ladder, a limiting component is provided on the surface of the connecting rod, the inner wall of the first connecting seat, and both sides of the second connecting seat. The limiting component includes a limiting ratchet provided on the surface of the connecting rod and both sides of the second connecting seat. A limiting block is engaged with the teeth of the limiting ratchet. A limiting post is in contact with one side of the limiting block. One end of the limiting post is connected to one side of the first connecting seat. A spring is connected to the other side of the limiting block. A connecting block is provided at one end of the spring. A rotating rod passes through the connecting block and the limiting block. One end of the rotating rod is connected to the first connecting seat.
[0009] Furthermore, in order to better pull the limiting block, an adjusting handle is fixed to the side of the limiting block, with the surface of the adjusting handle close to the side of the connecting seat two.
[0010] Furthermore, in order to better assist in fixing the articulated ladder, both sides of ladder one and ladder two are equipped with fixing seats. The inner wall of the fixing seat of ladder one is equipped with a fixing plate, and one end of the fixing plate is in contact with the inner wall of the fixing seat of ladder two.
[0011] Furthermore, to better improve the firmness between the mounting base and the mounting plate, a fixing screw is threaded onto the mounting base, and one end of the fixing screw is threaded onto the mounting plate.
[0012] Furthermore, in order to better install connecting seat one and connecting seat two, multiple connecting holes are provided on both sides of ladder one and ladder two and connecting seat one and connecting seat two, and connecting screws are threaded into the inner walls of the multiple connecting holes.
[0013] Furthermore, in order to better improve the anti-slip properties of ladder one and ladder two during use, multiple anti-slip sleeves are provided at one end of ladder one and ladder two, and the anti-slip sleeves are adapted to one end of ladder one and ladder two.
[0014] The beneficial effects of this utility model are as follows:
[0015] (1) By setting the connecting components between ladder one and ladder two, the modularization of the hinge part of the articulated ladder can be realized. When the hinge part is damaged, there is no need to replace the entire ladder. Just loosen the connecting screws to disassemble the damaged connecting components and replace the new parts, which reduces maintenance costs and improves the convenience of maintenance. It also reduces maintenance time and workload. Furthermore, it can be adaptively adjusted according to the actual size of ladder one and ladder two, thereby ensuring the tightness and stability of the connection. This allows the articulated ladder to adapt to ladders of various sizes, improves the versatility and flexibility of the ladder, and meets the usage needs in different scenarios.
[0016] (2) By setting the limiting component in the connecting component, the range of motion of the connecting seat 2 can be effectively limited to prevent excessive rotation or shaking, thereby improving the stability and safety of the ladder and further enhancing the flexibility and controllability of the articulated ladder. At the same time, the fixed seat and fixed plate set in ladder 1 and ladder 2 can further enhance the stability of the articulated ladder, so that when the articulated ladder is used as a work platform, it can provide more reliable support and improve the user's work safety and efficiency. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the working structure of a hinged modular detachable articulated ladder according to an embodiment of the present utility model. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the working structure of a hinged modular detachable articulated ladder according to an embodiment of the present utility model. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the connecting and limiting components of a hinged modular detachable articulated ladder according to an embodiment of the present invention. Figure 1 ;
[0021] Figure 4 This is a schematic diagram of the connecting and limiting components of a hinged modular detachable articulated ladder according to an embodiment of the present invention. Figure 2 ;
[0022] Figure 5 This is a schematic diagram of the connection component structure of a hinged modular detachable articulated ladder according to an embodiment of the present utility model;
[0023] Figure 6 This is a schematic diagram of a hinged modular detachable articulated ladder according to an embodiment of the present utility model.
[0024] In the picture:
[0025] 1. Ladder One; 2. Ladder Two; 3. Connecting Assembly; 301. Connecting Seat One; 302. Connecting Seat Two; 303. Connecting Rod; 304. Spring-loaded Telescopic Rod; 305. Clamping Plate; 4. Limiting Assembly; 401. Limiting Ratchet; 402. Limiting Block; 403. Limiting Post; 404. Spring; 405. Connecting Block; 406. Rotating Rod; 5. Adjusting Handle; 6. Fixing Seat; 7. Fixing Plate; 8. Fixing Screw; 9. Connecting Screw; 10. Anti-slip Sleeve. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Example 1:
[0028] like Figures 1-6 As shown, a hinged modular detachable articulated ladder according to an embodiment of the present invention includes a ladder 1 and a ladder 2, which are structures for users to climb. A connecting component 3 is provided at one end of each ladder 1 and ladder 2. The connecting component 3 includes an installation groove at one end of each ladder 1 and ladder 2 for mounting a connecting seat 301 and a connecting seat 302. Connecting seats 301 and 302 are respectively provided on the inner wall of the installation groove and on one end surface of each ladder 1 and ladder 2 for connecting ladder 1 and ladder 2, thus hingedly connecting them. A connecting groove is provided on one side of connecting seat 301 for mounting connecting seat 302. A connecting rod 303 penetrates the inner wall of the connecting groove for connecting connecting seat 301 and connecting seat 302. The surface of 3 is hinged to one end of the connecting seat 2 302. Sixteen spring-loaded telescopic rods 304 are provided on the inner walls of the connecting seat 1 301 and the connecting seat 2 302, in groups of four. The spring-loaded telescopic rod 304 consists of telescopic rod 1 (small diameter), telescopic rod 2 (large diameter) and its spring. One end of telescopic rod 1 is nested and connected to the inner wall of telescopic rod 2 through a sealing block or sealing gasket. The spring is fitted on the outside of telescopic rod 1 and telescopic rod 2. The data of the spring-loaded telescopic rod 304 can be adjusted according to the actual situation. It is used to make adaptive adjustments according to different sizes of ladder 1 and ladder 2. One end of the spring-loaded telescopic rod 304 is fixed with a clamping plate 305 for fixing ladder 1 and ladder 2. One side of the clamping plate 305 is in contact with the mounting groove and one end surface of ladder 1 and ladder 2.
[0029] Two connecting holes are provided on both sides of ladder 1 and ladder 2 and connecting seat 1 301 and connecting seat 2 302. Connecting screws 9 are threaded into the inner walls of the two connecting holes to make the connection between ladder 1 and ladder 2 and connecting seat 1 301 and connecting seat 2 302 tighter. Two anti-slip sleeves 10 are provided at one end of ladder 1 and ladder 2 to improve the anti-slip performance when the ladder is supported. The anti-slip sleeves 10 are adapted to one end of ladder 1 and ladder 2.
[0030] Example 2:
[0031] like Figures 1-6As shown, according to an embodiment of the present invention, a hinged modular detachable articulated ladder has a limiting component 4 provided on the surface of the connecting rod 303, the inner wall of the first connecting seat 301, and both sides of the second connecting seat 302. The limiting component 4 includes a limiting ratchet 401 provided on the surface of the connecting rod 303 and both sides of the second connecting seat 302, which is used to assist in limiting with the limiting block 402. The limiting ratchet 401 is engaged with the limiting block 402 at its teeth to assist in limiting the range of the second connecting seat 302. One side of the limiting block 402 is in contact with a limiting post 403, which is used to limit the range of motion of the limiting block 402. One end of the limiting post 403 is connected to one side of the connecting seat 301. The other side of the limiting block 402 is connected to a spring 404. One end of the spring 404 is provided with a connecting block 405, which is used to limit the range of motion of the spring. A rotating rod 406 passes through the connecting block 405 and the limiting block 402, which is used to assist the movement of the connecting block 405 and the limiting block 402. One end of the rotating rod 406 is connected to the connecting seat 301.
[0032] An adjusting handle 5 is fixed to the side of the limiting block 402 for adjusting the position of the limiting block 402. The surface of the adjusting handle 5 is close to the side of the connecting seat 302. Both sides of the ladder 1 and the ladder 2 are provided with fixing seats 6 for storing the fixing plate 7. The inner wall of the fixing seat 6 of the ladder 1 is provided with the fixing plate 7 to improve the stability of the articulated ladder during use. One end of the fixing plate 7 contacts the inner wall of the fixing seat 6 of the ladder 2. The fixing seat 6 is threaded with a fixing screw 8 to improve the stability between the fixing plate 7 and the fixing seat 6. One end of the fixing screw 8 is threaded with the fixing plate 7.
[0033] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.
[0034] In summary, with the help of the above-mentioned technical solution of this utility model, when it is necessary to replace the hinge part of the articulated ladder, the hinge part of the articulated ladder can be quickly disassembled and the damaged part replaced by loosening the connecting screws 9 that connect the connecting seat 1 301 and connecting seat 2 302 and the ladder 1 1 and ladder 2 2. There is no need to replace the entire ladder. During installation, the inner walls of connecting seat 1 301 and connecting seat 2 302 are connected to one end of ladder 1 1 and ladder 2 2. At the same time, the spring-loaded telescopic rod 304 set on the inner wall of connecting seat 1 301 and connecting seat 2 302 adaptively adjusts the position of clamping plate 305 through telescopic extension and spring tension, so that clamping plate 305 is tightly attached to the surface of the ladder, ensuring the tightness and stability of the connection. After installation, the connecting screws 9 can be used to improve the tightness between connecting seat 1 301 and connecting seat 2 302 and ladder 1 1 and ladder 2 2.
[0035] When the ladder is unfolded, the limiting block 402 is pressed by the spring 404 and engages with the teeth of the limiting ratchet 401, preventing the connecting seat 302 from rotating in the opposite direction and preventing the ladder from being over-folded or shaking. The engagement of the limiting block 402 can be released by pulling the adjusting handle 5 to adjust the ladder angle.
[0036] When the ladder is unfolded into a working platform, the fixing plate 7 extends from the fixing seat 6 and contacts the inner wall of the fixing seat 6 of the other ladder. Then, by tightening the fixing screw 8, the fixing plate 7 and the fixing seat 6 form a rigid connection, which further reduces the sway at the hinge of the ladder and improves the overall stability. The anti-slip sleeves 10 are installed at the ends of the ladder 1 and the ladder 2. When the ladder is supported on the ground or wall, the anti-slip sleeves 10 increase the friction of the contact surface to prevent the ladder from sliding and ensure safe use.
[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A hinged, modular, detachable articulated ladder, characterized in that, The system includes a ladder (1) and a ladder (2). One end of the ladder (1) and the ladder (2) is provided with a connecting component (3). The connecting component (3) includes an installation groove opened at one end of the ladder (1) and the ladder (2). The inner wall of the installation groove and the surface of one end of the ladder (1) and the ladder (2) are respectively provided with a connecting seat (301) and a connecting seat (302). A connecting groove is opened on one side of the connecting seat (301). A connecting rod (303) passes through the inner wall of the connecting groove. The surface of the connecting rod (303) is hinged to one end of the connecting seat (302). Multiple spring-loaded telescopic rods (304) are provided on the inner walls of the connecting seat (301) and the connecting seat (302). A clamping plate (305) is fixed at one end of the spring-loaded telescopic rod (304). One side of the clamping plate (305) is in contact with the installation groove, the surface of one end of the ladder (1), and the ladder (2).
2. The hinged modular detachable articulated ladder according to claim 1, characterized in that, A limiting component (4) is provided on the surface of the connecting rod (303), the inner wall of the first connecting seat (301), and both sides of the second connecting seat (302). The limiting component (4) includes a limiting ratchet (401) provided on the surface of the connecting rod (303) and both sides of the second connecting seat (302). A limiting block (402) is engaged with the teeth of the limiting ratchet (401). A limiting post (403) is in contact with one side of the limiting block (402). One end of the limiting post (403) is connected to one side of the first connecting seat (301). A spring (404) is connected to the other side of the limiting block (402). A connecting block (405) is provided at one end of the spring (404). A rotating rod (406) passes through the connecting block (405) and the limiting block (402). One end of the rotating rod (406) is connected to the first connecting seat (301).
3. A hinged, modular, detachable articulated ladder according to claim 2, characterized in that, An adjusting handle (5) is fixed to the side of the limiting block (402), and the surface of the adjusting handle (5) is close to the side of the connecting seat (302).
4. A hinged, modular, detachable articulated ladder according to claim 3, characterized in that, Both sides of ladder one (1) and ladder two (2) are provided with fixed seats (6). The inner wall of the fixed seat (6) of ladder one (1) is provided with a fixed plate (7). One end of the fixed plate (7) is in contact with the inner wall of the fixed seat (6) of ladder two (2).
5. A hinged, modular, detachable articulated ladder according to claim 4, characterized in that, The mounting base (6) is threaded with a fixing screw (8), and one end of the fixing screw (8) is threadedly connected to the mounting plate (7).
6. A hinged, modular, detachable articulated ladder according to claim 5, characterized in that, Multiple connecting holes are provided on both sides of ladder one (1), ladder two (2) and connecting seat one (301) and connecting seat two (302), and connecting screws (9) are threaded on the inner wall of the multiple connecting holes.
7. A hinged, modular, detachable articulated ladder according to claim 6, characterized in that, Multiple anti-slip sleeves (10) are provided at one end of ladder one (1) and ladder two (2), and the anti-slip sleeves (10) are adapted to one end of ladder one (1) and ladder two (2).