A folding step for a trailer

Abstract

The utility model discloses a folding stair for trailer belongs to trailer technical field, including first stair, second stair and hook, first stair and second stair all are composed of angle steel, square tube and net board, and the frame is formed by angle steel and several square tubes, and the net board is laid on the frame, one end of first stair is hinged with second stair, and the other end of first stair is provided with the hook. It can solve the problem of inconvenient storage caused by large space occupation of traditional trailer stair, and can be effectively fixed when not in use, avoiding the collision between the stair and other parts. It can also ensure the structural strength while achieving lightweight, and is easy to install and disassemble.

Description

Technical Field

[0001] This utility model belongs to the field of trailer technology, specifically relating to a folding ladder for trailers. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In the daily use of trailers and cargo transportation operations, whether it's the driver needing to climb onto the top of the trailer to check the cargo's securement and repair vehicle facilities, or loading and unloading personnel moving goods between the ground and the trailer, the convenient support provided by the ladder is indispensable. Especially when transporting large and heavy cargo, the ladder is an important aid in ensuring operational safety.

[0004] Currently, commercially available trailer ladders have certain limitations in their structural design. Their overall shape is relatively fixed, and when not in use, they often occupy a significant area at the rear of the trailer or in storage space. This undoubtedly exacerbates the pressure on space utilization in already space-constrained transportation scenarios, causing considerable inconvenience to the overall layout planning of the trailer and its storage when not in use. When not in use and stored, the ladders lack an effective fixing structure, making them prone to swaying due to bumps during vehicle movement. This can not only lead to collisions and damage to other parts of the trailer but also pose certain safety hazards. Furthermore, traditional ladders are often made of heavy materials to ensure structural strength, resulting in a large weight. This not only increases the overall load on the trailer, affecting fuel economy and driving performance, but also requires more manpower and time for transporting, installing, and maintaining the ladders, reducing operational efficiency. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a folding ladder for trailers, which solves the problem of inconvenient storage caused by the large space occupied by traditional trailer ladders. It can also be effectively fixed when not in use to prevent the ladder from shaking and colliding with other components. Furthermore, it can achieve lightweight while ensuring structural strength, and is easy to install and disassemble.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A folding ladder for a trailer includes a first step ladder, a second step ladder, and a hook. Both the first step ladder and the second step ladder are composed of angle steel, square tubes, and mesh panels. A frame is formed by the angle steel and several square tubes, and the mesh panels are laid on the frame. One end of the first step ladder is hinged to the second step ladder, and the other end of the first step ladder is provided with a hook.

[0008] As a further technical solution, a hinge is also included, wherein one end of the first step ladder is connected to one end of the hinge, and the other end of the hinge is connected to one end of the second step ladder.

[0009] As a further technical solution, the first step ladder includes a first square tube, a second square tube, a fifth square tube, and a first mesh plate. The two ends of the first square tube are provided with second square tubes, and the first square tube and the second square tube are welded together.

[0010] As a further technical solution, a fifth square tube is provided on one side of the first square tube, the fifth square tube is located in the middle of the second square tube, and the fifth square tube and the second square tube are welded together.

[0011] As a further technical solution, a first angle steel is provided at one end of the fifth square tube, and the first angle steel and the second square tube are welded together; one end of the hinge is connected to the first angle steel.

[0012] As a further technical solution, a hook is provided on the other side of the first square tube. The hooks are symmetrically arranged on the first square tube, and a fixing seat is symmetrically arranged on the inner side of the hook. Both the fixing seat and the hook are welded to the first square tube.

[0013] As a further technical solution, a first mesh plate is provided at the upper end of the second square tube, and the lower end of the first mesh plate is welded to the upper surface of the first square tube, the second square tube, the fifth square tube and the first angle steel.

[0014] As a further technical solution, the second step includes a third square tube, a fourth square tube, and a second angle steel, with fourth square tubes provided at both ends of the third square tube, and the third square tube and the fourth square tube are welded together.

[0015] As a further technical solution, a second angle steel is provided on one side of the third-party tube, and the second angle steel is welded to the fourth square tube; the other side of the third-party tube is connected to the other end of the hinge.

[0016] As a further technical solution, a second mesh plate is provided at the upper end of the fourth square tube, and the lower end of the second mesh plate is welded to the upper surface of the third square tube, the fourth square tube, and the second angle steel; a spring pin is provided at one end of the second angle steel, and the spring pin is connected to the second angle steel.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are:

[0018] The first and second steps of this utility model adopt a hinged structure, allowing the two ladder sections to rotate flexibly and easily achieve folding and unfolding operations. When the ladder is not in use, the two ladder sections can be folded in half through this hinged structure, reducing the space occupied on the trailer storage space. Whether placed in the empty area at the rear of the trailer or stored separately, it can effectively save space and greatly improve the convenience of transportation and storage. When needed, simply rotate the two ladder sections to their maximum flattened position. At this time, the second ladder section will be precisely limited by the angle steel at the rear of the first ladder section, quickly forming a complete and stable ladder structure. The operation is simple and efficient.

[0019] This invention uses a spring pin to quickly lock the ladder in its folded storage state, and uses a fixing seat to secure the folded ladder to the trailer, effectively preventing shaking during transportation and ensuring stability and safety during storage.

[0020] This utility model uses a steel square tube as the main frame, with angle steel for horizontal and vertical support and welding fixation. The ladder surface adopts a mesh structure, which reduces the amount of material used to achieve lightweighting. At the same time, the load is evenly distributed through structural optimization to enhance the overall rigidity. The hooks are made of alloy steel and are treated with special processes. Local reinforcement ensures the overall load-bearing capacity and impact resistance, meeting the strength requirements for use. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0022] Figure 1 This is a three-dimensional structural diagram of the unfolded state of the folding ladder for trailer of this utility model;

[0023] Figure 2 This is a front view of the unfolded state of the folding ladder for trailers according to this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the folded state of the folding ladder for trailers according to this utility model;

[0025] Figure 4 This is a front view of the folded state of the folding ladder for trailers of this utility model;

[0026] Figure 5 This is a partial enlarged view of the folding ladder for trailers according to this utility model;

[0027] Figure 6 This is an installation location diagram of the folding ladder for trailers according to this utility model.

[0028] In the diagram: 1. First step ladder; 11. First square tube; 12. Second square tube; 13. Fifth square tube; 14. First angle steel; 2. Second step ladder; 21. Third square tube; 22. Fourth square tube; 23. Second angle steel; 3. Hook; 4. Fixing seat; 5. Hinge; 6. Spring pin; 7. Trailer rear; 8. First mesh panel; 9. Second mesh panel. Detailed Implementation

[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a folding ladder for a trailer, such as... Figure 1 As shown, the system includes a first step ladder 1, a second step ladder 2, and a hook 3. Both the first step ladder 1 and the second step ladder 2 are composed of angle steel, square tubing, and wire mesh. A frame is formed by the angle steel and several square tubing, and the wire mesh is laid on the frame. One end of the first step ladder 1 is hinged to the second step ladder 2, and the other end of the first step ladder 1 is equipped with a hook 3. The system also includes a hinge 5, with one end of the first step ladder 1 connected to one end of the hinge 5, and the other end of the hinge 5 connected to one end of the second step ladder 2, thus hinged the first step ladder 1 and the second step ladder 2.

[0031] Specifically, the folding ladder can be used individually or in pairs. The first step (1) and the second step (2) of the folding ladder adopt a hinge structure of type 5, which allows the two ladder sections to rotate flexibly and easily achieve folding and unfolding operations. When the ladder is not in use, the two ladder sections can be folded in half through this hinge structure, reducing the space occupied on the trailer storage space. Whether placed in the empty area at the rear of the trailer or stored separately, it can effectively save space and greatly improve the convenience of transportation and storage. When needed, simply rotate the two ladder sections to the ultimate flattened position. At this time, the second ladder section will be precisely limited by the angle steel at the rear of the first ladder section, quickly forming a complete and stable ladder structure. The operation is simple and efficient.

[0032] The first step of the ladder (step 1) is constructed of steel square tubing on both sides, providing a stable support frame. The square tubing is supported by angle steel; the unique right-angle structure of the angle steel significantly enhances the overall rigidity of the ladder in both the horizontal and vertical directions, effectively preventing twisting or deformation during use. The square tubing and angle steel are welded together, ensuring a secure bond that can withstand various loads generated during personnel movement and goods handling. Simultaneously, a mesh panel is welded to the ladder surface. The mesh structure evenly distributes the load, preventing excessive localized stress, and its surface roughness increases friction between the feet and the ladder surface, further enhancing safety.

[0033] The second step is shorter in length than the first step (step 1). It also uses steel square tubing as the left and right support frames, supported by angle steel and welded together. The step surface is also welded with wire mesh to ensure load-bearing strength. This symmetrical design makes the steps more evenly stressed, reducing the risk of tilting or deformation due to uneven stress. It also facilitates processing and manufacturing, reducing production costs.

[0034] like Figure 3 As shown, the first step of the ladder 1 includes a first square tube 11, a second square tube 12, a fifth square tube 13, and a first mesh plate 8. The second square tube 12 is installed at both ends of the first square tube 11, and the first and second square tubes 11 are welded together. The fifth square tube 13 is installed on one side of the first square tube 11, positioned in the middle of the second square tube 12, and is welded together with the second square tube 12. A first angle steel 14 is installed at one end of the fifth square tube 13, and the first angle steel 14 is welded together with the second square tube 12; one end of the hinge 5 is connected to the first angle steel 14.

[0035] Specifically, hinge 5 has a rotating shaft, which uses a high-strength shaft as the rotating shaft. It has good wear resistance and fatigue resistance, and can withstand the large torque and impact force generated during the folding and unfolding of the ladder. This allows the ladder to be easily folded when not in use, reducing space occupation and facilitating trailer transportation and storage. When rotated to the extreme flat position, the second step 2 is limited by the angle steel at the tail of the first step 1, and can be unfolded to form a complete ladder structure. The operation is simple.

[0036] like Figure 6 As shown, a hook 3 is provided on the other side of the first square tube 11. The hook 3 is symmetrically arranged on the first square tube 11. A fixing seat 4 is symmetrically arranged on the inner side of the hook 3. Both the fixing seat 4 and the hook 3 are welded to the first square tube 11.

[0037] Specifically, the folding ladder is installed by hooking the rear of the trailer 7 with hook 3. The hook 3 is designed with an opening and curvature that are compatible with the structure of the rear of the trailer 7. The mounting base 4 is provided with screw holes, which can be used to fix the folding ladder with the mounting holes on the trailer to prevent the folding ladder from shaking when not in use.

[0038] like Figure 2 and Figure 4 As shown, a first mesh plate 8 is provided at the upper end of the second square tube 12, and the lower end of the first mesh plate 8 is welded to the upper surfaces of the first square tube 11, the second square tube 12, the fifth square tube 13, and the first angle steel 14. A second mesh plate 9 is provided at the upper end of the fourth square tube 22, and the lower end of the second mesh plate 9 is welded to the upper surfaces of the third square tube 21, the fourth square tube 22, and the second angle steel 23.

[0039] Specifically, the mesh on both the first mesh panel 8 and the second mesh panel 9 is angled, effectively preventing wheel jamming when the cargo transport trolley moves. The mesh structure increases the friction between the feet and the stair surface, effectively preventing slippage when people go up and down, especially in damp or dusty environments, maintaining good anti-slip performance and ensuring safety. The mesh structure evenly distributes the load of people or goods across the entire stair surface, avoiding excessive local stress that could lead to deformation. Combined with the welded fixing method, it can stably withstand various loads during use, enhancing the overall load-bearing strength. Compared to solid panels, the mesh panels reduce material usage through their perforated design, reducing the overall weight of the staircase while maintaining structural strength, meeting lightweight design requirements, and facilitating handling and installation.

[0040] The second step 2 includes a third square tube 21, a fourth square tube 22, and a second angle steel 23. The fourth square tube 22 is installed at both ends of the third square tube 21, and the third square tube 21 and the fourth square tube 22 are welded together. The second angle steel 23 is installed on one side of the third square tube 21, and the second angle steel 23 is welded to the fourth square tube 22; the other side of the third square tube 21 is connected to the other end of the hinge 5.

[0041] Specifically, both the first step 1 and the second step 2 use steel square tubes as the main frame, with angle steel for horizontal and vertical support and welding fixation. The ladder surface adopts a mesh structure, which reduces the amount of material used to achieve lightweighting. At the same time, the load is evenly distributed through structural optimization to enhance the overall rigidity. In addition, the hook 3 is made of alloy steel and is treated with special process. Local reinforcement ensures the overall load-bearing capacity and impact resistance, meeting the strength requirements for use.

[0042] like Figure 5 As shown, a spring pin 6 is provided at one end of the second angle steel 23, and the spring pin 6 is connected to the second angle steel 23.

[0043] Specifically, the spring pin 6 is a prior art mechanical part that relies on spring force to achieve positioning, connection, or locking functions. The spring pin 6 allows the ladder to be quickly locked in the folded storage state and fixed to the trailer by the fixing seat 4, effectively preventing shaking due to bumps during transportation and ensuring stability and safety during storage.

[0044] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A folding ladder for a trailer, characterized in that, It includes a first step ladder, a second step ladder, and a hook. The first step ladder and the second step ladder are both composed of angle steel, square tubes, and wire mesh. The frame is formed by the angle steel and several square tubes, and the wire mesh is laid on the frame. One end of the first step ladder is hinged to the second step ladder, and the other end of the first step ladder is equipped with a hook.

2. A folding ladder for a trailer as described in claim 1, characterized in that, It also includes a hinge, one end of the first step ladder is connected to one end of the hinge, and the other end of the hinge is connected to one end of the second step ladder.

3. A folding ladder for a trailer as described in claim 2, characterized in that, The first step ladder includes a first square tube, a second square tube, a fifth square tube, and a first mesh plate. The two ends of the first square tube are provided with second square tubes, and the first square tube and the second square tube are welded together.

4. A folding ladder for a trailer as described in claim 3, characterized in that, A fifth square tube is provided on one side of the first square tube, the fifth square tube is located in the middle of the second square tube, and the fifth square tube and the second square tube are welded together.

5. A folding ladder for a trailer as described in claim 4, characterized in that, One end of the fifth square tube is provided with a first angle steel, and the first angle steel and the second square tube are welded together; one end of the hinge is connected to the first angle steel.

6. A folding ladder for a trailer as described in claim 5, characterized in that, A hook is provided on the other side of the first square tube. The hooks are symmetrically arranged on the first square tube. Fixing seats are symmetrically arranged on the inner side of the hooks. Both the fixing seats and the hooks are welded to the first square tube.

7. A folding ladder for a trailer as described in claim 6, characterized in that, The upper end of the second square tube is provided with a first mesh plate, and the lower end of the first mesh plate is welded to the upper surface of the first square tube, the second square tube, the fifth square tube and the first angle steel.

8. A folding ladder for a trailer as described in claim 1, characterized in that, The second step includes a third square tube, a fourth square tube, and a second angle steel. The third square tube is provided with fourth square tubes at both ends, and the third square tube and the fourth square tube are welded together.

9. A folding ladder for a trailer as described in claim 8, characterized in that, A second angle steel is provided on one side of the third-party tube, and the second angle steel is welded to the fourth square tube; the other side of the third-party tube is connected to the other end of the hinge.

10. A folding ladder for a trailer as described in claim 9, characterized in that, The upper end of the fourth square tube is provided with a second mesh plate, and the lower end of the second mesh plate is welded to the upper surface of the third square tube, the fourth square tube, and the second angle steel; a spring pin is provided at one end of the second angle steel, and the spring pin is connected to the second angle steel.

Images