Composite square tube ladder coated with release agent
By designing a composite square tube ladder, using aluminum alloy square tubes and safety protection measures, the instability and safety hazards during ladder release agent application were solved, achieving efficient and safe coating results.
Patent Information
- Application Number
- CN202520064290.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-13
AI Technical Summary
The existing ladders lack protective measures when applying release agent, which leads to unstable operation by construction workers, low application efficiency, and safety hazards.
A composite square tube ladder was designed, using aluminum alloy square tubes as the main body and equipped with safety protection measures such as hooks, safety locks and safety ropes to ensure that construction workers can operate the ladder with both hands to apply release agent.
It improves the efficiency and safety of applying release agent, prevents ladders from tipping over and construction workers from falling, and ensures construction quality.
Smart Images

Figure CN223839033U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ladder technology, and more specifically, to a composite square tube ladder coated with a release agent. Background Technology
[0002] In existing engineering projects, conventional square tube ladders are a common construction equipment, mainly assembled from square tube materials. They are characterized by simple structure, lightweight and durable features, and are widely used in various construction scenarios, such as bridge construction and high-rise building exterior wall work. They provide construction workers with convenient vertical access. However, in formwork construction, construction workers often need to apply release agent to the surface of the formwork to reduce the adhesion between the formwork and the concrete, making it easier to dismantle the formwork later. However, in actual operation, since conventional ladders do not have special safety measures, construction workers often have to hold the ladder with one hand to maintain balance and apply the release agent with the other hand. This operation method is not only inefficient, but also puts the construction workers in an unstable state, which can easily lead to safety hazards. At the same time, applying the release agent with one hand makes it difficult to ensure the uniformity and integrity of the application, thus affecting the dismantling effect of the formwork and the construction quality. Utility Model Content
[0003] To overcome the above deficiencies, this utility model provides a composite square tube ladder coated with a release agent to solve the aforementioned problems.
[0004] This utility model is implemented as follows:
[0005] A composite square tube ladder coated with a release agent includes a ladder body comprising two aluminum alloy square tubes. An assembly block is provided on the outer side of each square tube near the top. A long rod is provided on the bottom side of the assembly block away from the aluminum alloy square tubes. A plurality of steps are linearly and equally spaced between the two aluminum alloy square tubes. The two ends of each step are connected to the two long rods. A hook is provided on the top of each aluminum alloy square tube. A limit rod is provided on the upper outer side of one of the long rods. The limit rod has a plurality of bends and a safety lock is movably provided on the limit rod. The safety lock is connected to a safety rope.
[0006] In an embodiment of this utility model, a first mounting hole is provided linearly and equally spaced on one side of the aluminum alloy square tube, and a second mounting hole is provided linearly and equally spaced on one side of the long rod. A first assembly rod is provided in the first mounting hole opposite to the two square tube ladder bodies, and a first assembly rod is provided in the second mounting hole opposite to the two long rods. A first fixing hole and a second fixing hole are respectively opened on one side of the tread. The first assembly rod is disposed in the first fixing hole, and the second assembly rod is disposed in the second fixing hole.
[0007] In an embodiment of this utility model, the limiting rod and the long rod are connected by several welded connecting plates, each of which is located below the bent portion.
[0008] In an embodiment of this utility model, the bending direction of the bent portion is obliquely downward.
[0009] In an embodiment of this utility model, one end of the safety lock is a safety rope connection part for connecting with a safety rope, and the other end has a movable opening on one side.
[0010] In an embodiment of this utility model, the spacing between the movable openings is greater than the width of the connecting plate, and the spacing between the movable openings is less than the diameter of the limiting rod.
[0011] In an embodiment of this utility model, a threaded hole is provided at the top of the aluminum alloy square tube, and the hook is detachably disposed at the top of the aluminum alloy square tube.
[0012] In an embodiment of this utility model, the bottom of the aluminum alloy square tube is provided with an anti-slip pad.
[0013] The beneficial effects of this utility model are as follows: This composite square tube ladder uses two aluminum alloy square tubes as the main structure, and forms a stable ladder structure through components such as assembly blocks, long rods, and steps. This makes the ladder more stable during use, and its overall structure is not prone to shaking. The composite square tube ladder is equipped with safety protection measures such as hooks, safety locks, and safety ropes. The hooks can be hung on the top of the formwork for fixation to prevent the ladder from tipping over. The safety locks and safety ropes can ensure the safety of construction workers on the ladder and prevent falls. At the same time, the connection and movement method between the safety lock and the limit rod eliminates the risk of the safety lock falling off due to misoperation, further increasing safety. Attached Figure Description
[0014] 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.
[0015] Figure 1 A schematic diagram of a composite square tube ladder coated with a release agent is provided for an embodiment of this utility model;
[0016] Figure 2 A schematic diagram of the structure of the square tube ladder body provided for an embodiment of this utility model;
[0017] Figure 3A schematic diagram of the pedal provided for an embodiment of this utility model;
[0018] Figure 4 A partial structural diagram of the safety lock and limiting rod provided for an embodiment of this utility model.
[0019] In the diagram: 10. Square tube ladder body; 11. Aluminum alloy square tube; 1101. First mounting hole; 12. Long rod; 1201. Second mounting hole; 13. First assembly rod; 14. Second assembly rod; 15. Step; 1501. First fixing hole; 1502. Second fixing hole; 16. Assembly block; 17. Anti-slip foot pad; 18. Hook; 20. Limiting rod; 21. Connecting plate; 22. Bending part; 30. Safety lock; 31. Safety rope connection part; 32. Moving port. Detailed Implementation
[0020] 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.
[0021] 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.
[0022] like Figure 1As shown, this utility model provides a composite square tube ladder for applying a release agent, including a square tube ladder body 10. The square tube ladder body 10 includes two aluminum alloy square tubes 11. An assembly block 16 is provided on the outer side of the square tubes near the top. A long rod 12 is provided on the bottom side of the assembly block 16 away from the aluminum alloy square tubes 11. A plurality of steps 15 are linearly and equally spaced between the two aluminum alloy square tubes 11. At the same time, the two ends of the steps 15 are connected to the two long rods 12. A hook 18 is provided on the top of the aluminum alloy square tubes 11. The hook 18 can be hung on the top of the template for fixation. A limited... The positioning rod 20 has several bends 22 and a safety lock 30 that is movably mounted on it. The safety lock 30 is connected to a safety rope. When in use, one end of the safety rope is fixed to the worker's waist. Based on the worker's position on the square tube ladder body 10, the safety lock 30 on the positioning rod 20 is moved to the bend 22 at a suitable height. When applying the release agent, both hands can be used simultaneously. The safety rope ensures the worker's safety on the square tube ladder body 10. At the same time, the hook 18 at the top prevents the square tube ladder body 10 from tipping over and causing a safety accident.
[0023] like Figure 2-3 As shown, the aluminum alloy square tube 11 has a first mounting hole 1101 linearly and equally spaced on one side, and the long rod 12 has a second mounting hole 1201 linearly and equally spaced on one side. The two square tube ladder bodies 10 are provided with a first assembly rod 13 in the corresponding first mounting hole 1101, and the two long rods 12 are provided with a first assembly rod 13 in the corresponding second mounting hole 1201. The tread 15 has a first fixing hole 1501 and a second fixing hole 1502 respectively on one side. The first assembly rod 13 is located in the first fixing hole 1501, and the second assembly rod 14 is located in the second fixing hole 1502.
[0024] like Figure 4 As shown, the limiting rod 20 and the long rod 12 are connected by several welded connecting plates 21. Each connecting plate 21 is located below the bend 22. Since the safety lock 30 is used to move it to one of the bends 22, each bend 22 is a major stress point. Therefore, welding the connecting plate 21 near the bend can ensure that the bend will not bend or deform due to excessive stress.
[0025] In this embodiment, the bending direction of the bent portion 22 is obliquely downward. The downward bending helps to fix the safety lock 30 and prevents it from moving when subjected to force.
[0026] In this embodiment, one end of the safety lock 30 is a safety rope connection part 31, which is used to connect with the safety rope, and the other end has a moving port 32 on one side.
[0027] It should be noted that the spacing of the movable openings 32 is greater than the width of the connecting plate 21, and the spacing of the movable openings 32 is less than the diameter of the limiting rod 20. When the movable safety lock 30 passes through the connecting plate 21, the position of the movable openings 32 is adjusted so that it passes through the connecting plate 21.
[0028] In this embodiment, a threaded hole is provided at the top of the aluminum alloy square tube 11, and the hook 18 is detachably installed at the top of the aluminum alloy square tube 11.
[0029] As a preferred embodiment, the bottom of the aluminum alloy square tube 11 is provided with an anti-slip pad 17. The anti-slip pad 17 helps to increase the friction between the square tube ladder body 10 and the ground, thereby improving the overall stability.
[0030] Specifically, the working principle of this composite square tube ladder for applying release agent is as follows: During use, the ladder body 10 is hung on one side of the template using hook 18, with its ground in contact with the ground. The safety rope is fixed to the construction worker. During the upward climb, the position of the safety lock 30 is moved and adjusted so that it passes through the connecting plate 21 and is finally moved to the bend 22 at a suitable height. At this point, the release agent can be applied with both hands. Through the above structure, the problem of existing ladders lacking protective measures and requiring only one-handed operation when applying release agent is solved, which not only results in low application efficiency but also easily leads to safety hazards.
[0031] 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 composite square tube ladder coated with a release agent, characterized in that, The system includes a square tube ladder body (10), which includes two aluminum alloy square tubes (11). An assembly block (16) is provided on the outer side of the square tube near the top. A long rod (12) is provided on the bottom side of the assembly block (16) away from the aluminum alloy square tube (11). Several steps (15) are linearly and equally arranged between the two aluminum alloy square tubes (11). At the same time, the two ends of the steps (15) are connected to the two long rods (12). A hook (18) is provided on the top of the aluminum alloy square tube (11). A limit rod (20) is provided on the upper outer side of one of the long rods (12). Several bends (22) are provided on the limit rod (20). A safety lock (30) is movably arranged on the limit rod (20). The safety lock (30) is connected to a safety rope.
2. The composite square tube ladder with a release agent applied according to claim 1, characterized in that, The aluminum alloy square tube (11) has a first mounting hole (1101) that is linearly and equally spaced on one side, and the long rod (12) has a second mounting hole (1201) that is linearly and equally spaced on one side. A first assembly rod (13) is provided in the first mounting hole (1101) opposite to each other on the two square tube ladder bodies (10), and a first assembly rod (13) is provided in the second mounting hole (1201) opposite to each other on the two long rods (12). A first fixing hole (1501) and a second fixing hole (1502) are respectively opened on one side of the tread (15). The first assembly rod (13) is located in the first fixing hole (1501), and the second assembly rod (14) is located in the second fixing hole (1502).
3. The composite square tube ladder with a release agent applied according to claim 1, characterized in that, The limiting rod (20) and the long rod (12) are connected by several welded connecting plates (21), each of the connecting plates (21) being located below the bent portion (22).
4. A composite square tube ladder coated with a release agent according to claim 3, characterized in that, The bending direction of the bent portion (22) is obliquely downward.
5. A composite square tube ladder coated with a release agent according to claim 4, characterized in that, One end of the safety buckle (30) is a safety rope connection part (31) for connecting with the safety rope, and the other end has a movable opening (32) on one side.
6. A composite square tube ladder coated with a release agent according to claim 5, characterized in that, The spacing of the movable openings (32) is greater than the width of the connecting plate (21), and the spacing of the movable openings (32) is less than the diameter of the limiting rod (20).
7. A composite square tube ladder coated with a release agent according to claim 1, characterized in that, The top of the aluminum alloy square tube (11) is provided with a threaded hole, and the hook (18) is detachably installed on the top of the aluminum alloy square tube (11).
8. A composite square tube ladder coated with a release agent according to claim 1, characterized in that, The bottom of the aluminum alloy square tube (11) is provided with anti-slip pads (17).