Fabricated aluminum alloy ladder reinforcing device
By using a prefabricated aluminum alloy ladder reinforcement device, which utilizes a telescopic design and limiting grooves to transfer the force on the joints, the problem of insufficient load-bearing capacity of ultra-long ladders is solved, thus improving construction safety and efficiency.
Patent Information
- Application Number
- CN202520095529.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-16
AI Technical Summary
When conventional ladders are used for ultra-high construction projects, the increased length reduces their load-bearing capacity, leading to bending, deformation, or breakage at the joints, which affects construction efficiency and safety.
The assembled aluminum alloy ladder reinforcement device includes an aluminum alloy ladder body, a cross sleeve rod, and a reinforcement rod. Through the telescopic design of the lateral connecting arm and the limiting groove, the force at the joint is transferred to the middle of the square tube, thereby improving the load-bearing capacity and stability.
This enhances the ladder's applicability and compatibility, prevents joints from bending or breaking, and ensures safety and efficiency during construction.
Smart Images
Figure CN223839027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ladder technology, and more specifically, to an assembled aluminum alloy ladder reinforcement device. Background Technology
[0002] In construction engineering, ladders play a vital role as an essential tool for climbing and overcoming obstacles. They are usually supported by two long poles with several rungs or steps in the middle, forming a stable and easy-to-use climbing structure that helps workers safely reach high places to complete various tasks such as high-altitude cleaning, electrical repair, and decoration.
[0003] However, when faced with extremely demanding construction requirements, the length of conventional ladders is often insufficient, necessitating additional assembly. But while increasing the ladder's length, its load-bearing capacity decreases accordingly. This is especially true when construction workers are heavy or need to carry heavy construction materials such as tools and accessories. These additional loads, along with the ladder's own weight, put enormous pressure on the ladder's joints. Prolonged or high-intensity use can easily lead to bending and deformation at the ladder's joints, and in severe cases, even breakage. This phenomenon not only seriously hinders construction efficiency but also poses a significant threat to the safety of workers. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides an assembled aluminum alloy ladder reinforcement device to solve the aforementioned problems.
[0005] This utility model is implemented as follows:
[0006] An assembled aluminum alloy ladder reinforcement device includes an aluminum alloy ladder body, a cross sleeve rod, and reinforcement rods. The aluminum alloy ladder body has two square tubes. The cross sleeve rod includes a ladder connecting rod. Two first connecting rods are symmetrically arranged in the middle of the ladder connecting rod. A partition is provided at the center of the inner side of the ladder connecting rod. The square tubes on any two aluminum alloy ladder bodies are respectively arranged on the inner side of both ends of the ladder connecting rod. The reinforcement rod includes a second connecting rod. Two transverse connecting arms are symmetrically arranged along the center of the outer side of the second connecting rod near one of its sections. A connecting rod is provided at the bottom of the other end of the transverse connecting arm. A clamping plate is provided at the bottom of the connecting rod. The second connecting rod is movably mounted on the first connecting rod. Each cross sleeve rod has two reinforcement rods. After the adjacent clamping plates on the two reinforcement rods contact the square tubes, the two clamping plates are bolted together to clamp and fix the square tubes.
[0007] In an embodiment of this utility model, each square tube has a first through hole on its outer side near both ends, and the ladder connecting rod has a first through hole of the same size on its outer side away from both ends. The square tube is inserted into the end of the ladder connecting rod until it abuts against the partition, and a pin or bolt is provided at the first through hole of both for fixation.
[0008] In an embodiment of this utility model, a plurality of limiting grooves are provided on the outer side of the first connecting rod near the two sides of the ladder connecting rod, and a limiting protrusion that engages with the limiting groove is provided on the inner side of the second connecting rod.
[0009] In an embodiment of this utility model, the transverse connecting arm is a telescopic structure, including an outer rod and an inner rod. One end of the outer rod is welded to the outside of the second connecting rod, and the inner rod is slidably disposed on the inside of the outer rod. The outer rod and the inner rod are provided with a plurality of second through holes of the same size as those on the square tube. The inner rod and the inner rod are fixed to any set of second through holes by pins or bolts.
[0010] In an embodiment of this utility model, the bottom of the clamping plate has a clamping groove, and side plates are provided on both sides of the clamping plate near the clamping groove. Several third through holes are provided on the side plates.
[0011] In an embodiment of this utility model, after the two clamping plates are clamped on both sides of the square tube, the two side plates do not contact each other.
[0012] In an embodiment of this utility model, the bottom wall of the clamping groove is provided with an anti-slip layer.
[0013] In an embodiment of this utility model, a reinforcing rib is provided between the clamping plate and the connecting rod.
[0014] The beneficial effects of this utility model are as follows: the horizontal connecting arm on the reinforcing rod adopts a telescopic design, which can flexibly adapt to aluminum alloy ladder bodies of different lengths, improving the applicability and compatibility of the device, allowing the device to be adjusted according to different construction needs and meet diverse construction scenarios; the cross sleeve and the reinforcing rod achieve the integration of the reinforcing device through the limiting groove and limiting protrusion, preventing them from falling off during use and affecting installation efficiency, while also facilitating transportation; through the design of the reinforcing rod, the force at the joint of the aluminum alloy ladder is transferred to the side of the square tube near the middle, reducing the stress on the joint, thereby improving the overall load-bearing capacity of the ladder, so that the ladder can remain stable when bearing a large load, avoiding problems such as bending deformation or breakage. Attached Figure Description
[0015] 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.
[0016] Figure 1 A schematic diagram of the structure of an assembled aluminum alloy ladder reinforcement device provided for an embodiment of this utility model;
[0017] Figure 2 A schematic diagram of the cross-shaped sleeve provided for an embodiment of this utility model;
[0018] Figure 3 A schematic diagram of the structure of the reinforcing rod provided for an embodiment of this utility model;
[0019] Figure 4 A cross-sectional view of the cross sleeve rod and the reinforcing rod provided for an embodiment of this utility model;
[0020] Figure 5 A schematic diagram of the structure of the cross sleeve rod and the reinforcing rod provided for the embodiment of this utility model.
[0021] In the diagram: 10. Aluminum alloy ladder body; 11. Square tube; 20. Cross sleeve rod; 21. Ladder connecting rod; 2101. Partition plate; 22. First connecting rod; 2201. Limiting groove; 30. Reinforcing rod; 31. Second connecting rod; 3101. Limiting protrusion; 32. Horizontal connecting arm; 3201. Outer rod; 3202. Inner rod; 33. Connecting rod; 34. Clamping plate; 3401. Clamping groove; 3402. Side plate; 35. Reinforcing rib. Detailed Implementation
[0022] 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.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] like Figure 1-3 and Figure 5 As shown, this utility model provides an assembled aluminum alloy ladder reinforcement device, including an aluminum alloy ladder body 10, a cross sleeve rod 20, and a reinforcement rod 30. The aluminum alloy ladder body 10 has two square tubes 11. The cross sleeve rod 20 includes a ladder connecting rod 21. Two first connecting rods 22 are symmetrically arranged in the middle of the ladder connecting rod 21. A partition 2101 is provided at the center of the inner side of the ladder connecting rod 21. The square tubes 11 on any two aluminum alloy ladder bodies 10 are respectively arranged on the inner side of both ends of the ladder connecting rod 21. The reinforcement rod 30 includes a second connecting rod 31. The outer side of the second connecting rod 31 is symmetrically arranged along the center near one of its sections. Two horizontal connecting arms 32 are provided, and a connecting rod 33 is provided at the bottom of the other end of the horizontal connecting arm 32. A clamping plate 34 is provided at the bottom of the connecting rod 33. The second connecting rod 31 is movably mounted on the first connecting rod 22, and two reinforcing rods 30 are provided on each cross sleeve rod 20. After the adjacent clamping plates 34 on the two reinforcing rods 30 come into contact with the square tube 11, the two clamping plates 34 are connected by bolts to clamp and fix the square tube 11. The reinforcing rods 30 improve the load-bearing capacity and stability between the two aluminum alloy ladder bodies 10, ensuring safety and efficiency in the construction process and providing solid and reliable support for workers in ultra-high construction scenarios.
[0025] like Figure 2 As shown, each square tube 11 has a first through hole on its outer side near both ends, and the ladder connecting rod 21 has a first through hole of the same size on its outer side away from both ends. The square tube 11 is inserted into the end of the ladder connecting rod 21 until it abuts against the partition plate 2101, and a pin or bolt is provided at the first through hole of both for fixing.
[0026] like Figure 2 and Figure 4 As shown, the outer side of the first connecting rod 22 is provided with several limiting grooves 2201 on both sides near the ladder connecting rod 21, and the inner side of the second connecting rod 31 is provided with limiting protrusions 3101 that mesh with the limiting grooves 2201. This design makes the cross sleeve rod 20 and the two reinforcing rods 30 form a complete reinforcing device, which is convenient for assembly and transportation.
[0027] like Figure 3As shown, the transverse connecting arm 32 is a telescopic structure, including an outer rod 3201 and an inner rod 3202. One end of the outer rod 3201 is welded to the outside of the second connecting rod 31. The inner rod 3202 is slidably disposed on the inside of the outer rod 3201. Several second through holes of the same size as those on the square tube 11 are opened on the outside of the outer rod 3201 and the inner rod 3202. The inner rod 3202 is fixed to any set of second through holes by pins or bolts. The solution of this reinforcement device is to transfer part of the force at the joint of the assembled ladder to the side of the square tube 11 near the middle through the reinforcement rod 30, thereby reducing the force on the joint. The longer the length of a single aluminum alloy ladder body 10, the farther the position to be transferred. The telescopic and adjustable structure can cope with the force transfer at the joint of aluminum alloy ladder bodies 10 of different lengths, increasing applicability.
[0028] In this embodiment, the bottom of the clamping plate 34 has a clamping groove 3401, and the two sides of the clamping plate 34 are provided with side plates 3402 on the side of the clamping groove 3401. Several third through holes are opened on the side plates 3402. When the two clamping plates 34 are clamped on both sides of the square tube 11, they are fixed to the third through holes by bolts.
[0029] In this embodiment, after the two clamping plates 34 are clamped on both sides of the square tube 11, the two side plates 3402 do not contact each other. This lack of contact ensures that the clamping plates 34 and the square tube 11 remain rigidly fixed.
[0030] As a preferred embodiment, the bottom wall of the clamping groove 3401 is provided with an anti-slip layer, which is preferably provided with a rubber layer. This can increase the clamping stability of the clamping plate 34 on the square tube 11 and prevent wear or indentation on the surface of the square tube 11 during the clamping process.
[0031] As a preferred embodiment, a reinforcing rib 35 is provided between the clamping plate 34 and the connecting rod 33, which can increase the radial stability of the clamping plate 34 along the direction of the square tube 11 during the stress process and avoid deformation caused by excessive radial force.
[0032] Specifically, the working principle of this prefabricated aluminum alloy ladder reinforcement device is as follows: Each cross sleeve rod 20 and its reinforcement rod 30 constitute a reinforcement device. In use, two reinforcement devices are set between every two aluminum alloy ladder bodies 10. Specifically, the square tube 11 is fixed to the end of the ladder connecting rod 21 by means of a pin. At the same time, the length of the transverse connecting arm 32 is adjusted to a suitable position (i.e., close to the center of the square tube 11). Meanwhile, the clamping plate 34 needs to avoid the position of the step on the aluminum alloy ladder body 10. Then, the two opposing clamping plates 34 clamp the square tube 11 and are rigidly fixed with bolts. After assembly, it can become a long ladder for high-altitude operations. When the joint is subjected to force, the reinforcement rod 30 transfers part of the force to the square tube 11 where the clamping plate 34 is located. Through the above structure, the problem of low load-bearing capacity of ultra-long ladders and easy bending deformation or even breakage at the ladder joints after high load use is solved, which is prone to safety accidents.
[0033] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.
Claims
1. A prefabricated aluminum alloy ladder reinforcement device, characterized in that, The ladder includes an aluminum alloy ladder body (10), a cross-shaped sleeve rod (20), and a reinforcing rod (30). The aluminum alloy ladder body (10) has two square tubes (11). The cross-shaped sleeve rod (20) includes a ladder connecting rod (21). Two first connecting rods (22) are symmetrically arranged in the middle of the ladder connecting rod (21). A partition (2101) is provided at the center of the inner side of the ladder connecting rod (21). The square tubes (11) on any two aluminum alloy ladder bodies (10) are respectively arranged on the inner side of both ends of the ladder connecting rod (21). The reinforcing rod (30) includes a second connecting rod (31). Two transverse connecting arms (32) are symmetrically arranged along the center near one of the outer sides of the connecting rod (31). A connecting rod (33) is provided at the bottom of the other end of the transverse connecting arm (32). A clamping plate (34) is provided at the bottom of the connecting rod (33). The second connecting rod (31) is movably arranged on the first connecting rod (22). Two reinforcing rods (30) are provided on each cross sleeve rod (20). After the adjacent clamping plates (34) on the two reinforcing rods (30) come into contact with the square tube (11), the two clamping plates (34) are connected by bolts to clamp and fix the square tube (11).
2. The assembled aluminum alloy ladder reinforcement device according to claim 1, characterized in that, Each square tube (11) has a first through hole on its outer side near both ends. The ladder connecting rod (21) has a first through hole of the same size on its outer side away from both ends. The square tube (11) is inserted into the end of the ladder connecting rod (21) until it abuts against the partition (2101). Pins or bolts are provided at the first through holes of both for fixing.
3. The assembled aluminum alloy ladder reinforcement device according to claim 1, characterized in that, The first connecting rod (22) has several limiting grooves (2201) on its outer side near the two sides of the ladder connecting rod (21), and the second connecting rod (31) has a limiting protrusion (3101) on its inner side that engages with the limiting groove (2201).
4. The prefabricated aluminum alloy ladder reinforcement device according to claim 1, characterized in that, The transverse connecting arm (32) is a telescopic structure, including an outer rod (3201) and an inner rod (3202). One end of the outer rod (3201) is welded to the outside of the second connecting rod (31). The inner rod (3202) is slidably disposed on the inside of the outer rod (3201). The outer rod (3201) and the inner rod (3202) are provided with a plurality of second through holes of the same size as those on the square tube (11). The inner rod (3202) is fixed to any set of second through holes by means of pins or bolts.
5. The assembled aluminum alloy ladder reinforcement device according to claim 1, characterized in that, The bottom of the clamping plate (34) has a clamping groove (3401), and side plates (3402) are provided on both sides of the clamping plate (34) near the clamping groove (3401). Several third through holes are provided on the side plates (3402).
6. The prefabricated aluminum alloy ladder reinforcement device according to claim 5, characterized in that, After the two clamping plates (34) are clamped on both sides of the square tube (11), the two side plates (3402) do not contact each other.
7. The assembled aluminum alloy ladder reinforcement device according to claim 6, characterized in that, The bottom wall of the groove (3401) is provided with an anti-slip layer.
8. The prefabricated aluminum alloy ladder reinforcement device according to claim 1, characterized in that, A reinforcing rib (35) is provided between the clamping plate (34) and the connecting rod (33).