Heavy duty folding ramp

Abstract

The utility model belongs to the technical field of vehicle-mounted accessories, and specifically discloses a heavy folding ramp, which comprises an upper half and a lower half, the upper half and the lower half are both arc-shaped frame structures, one end of the lower half is fixedly connected with a rotating shaft, the rotating shaft is movably connected to the upper half, the upper half is provided with a limiting groove for the movement of the rotating shaft along the extension direction of the upper half, and the two ends of the limiting groove are respectively provided with a first limiting structure and a second limiting structure for the positioning rotation of the rotating shaft. The utility model has the advantages of simple structure and convenient operation. The inner-outer staggered folding design of the upper half and the lower half makes the volume of the folded ramp smaller, and the ramp has two supporting points with the ground after being unfolded. Moreover, the support in the middle is not provided by the external accessories, but by the side pipes of the ramp itself, so that the strength is better and the load is larger.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle accessories technology, specifically relating to heavy-duty folding ramps. Background Technology

[0002] As society develops, the demand for personalized vehicles is increasing. When trucks are transporting other vehicles, a ramp is usually set up at the rear of the truck bed to provide a path for the vehicles to be transported.

[0003] The existing foldable aluminum ramps on the market have limited hinge capacity, with a single-piece load of around 340 kg. There are almost no foldable ramps with a single-piece load of over 680 kg.

[0004] To address the issue of poor load-bearing capacity in existing folding ramps, improvements to the ramp structure are needed to resolve the current technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a heavy-duty folding ramp with a simple structure and convenient operation. Through the staggered folding design of the upper and lower two pieces, the folded ramp has a smaller volume. At the same time, after the ramp is unfolded, it has two support points with the ground. The middle support is not provided by external accessories, but by the side tubes of the ramp itself, which provides better strength and greater load capacity.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a heavy-duty folding ramp, comprising an upper half and a lower half, both of which are arc-shaped frame structures. One end of the lower half is fixedly connected to a rotating shaft, which is movably connected to the upper half. Along the extending direction of the upper half, the upper half is provided with a limiting groove for the rotating shaft to move. The two ends of the limiting groove are respectively provided with a first limiting structure and a second limiting structure for the rotating shaft to be positioned and rotated.

[0007] To better realize this utility model, the upper half includes two parallel first arc-shaped support tubes and multiple first connecting plates connecting the two first arc-shaped support tubes. The multiple first connecting plates are fixedly connected to the convex surface of the first arc-shaped support tubes at intervals and are all distributed in the upper half of the first arc-shaped support tubes. The two first arc-shaped support tubes are fixedly connected to baffles near the first connecting plates.

[0008] To better realize this utility model, two limiting grooves are provided, and they are respectively located on the opposite inner sides of the two first arc-shaped support tubes. The first arc-shaped support tube is embedded with a first limiting structure near the first connecting plate. The first limiting structure is provided with a U-shaped groove communicating with the limiting groove. The first arc-shaped support tube is detachably connected to a second limiting structure away from the first connecting plate. The second limiting structure is provided with an arc-shaped groove communicating with the limiting groove.

[0009] To better realize this utility model, the lower half includes two parallel second arc-shaped support tubes and multiple second connecting plates connecting the two second arc-shaped support tubes. The two ends of the rotating shaft pass through the two second arc-shaped support tubes respectively, and the multiple second connecting plates are fixedly connected to the concave surface of the second arc-shaped support tubes at intervals.

[0010] To better realize this utility model, the two ends of the second connecting plate extend into the second arc-shaped support tubes. The two second arc-shaped support tubes are integrally formed with a U-shaped edging plate. The edging plate wraps around the end of the second connecting plate. The two second arc-shaped support tubes are located between the two first arc-shaped support tubes. At least a portion of the edging plate abuts against the first arc-shaped support tube.

[0011] To better realize this utility model, the top surfaces of the first connecting plate and the second connecting plate are provided with anti-slip texture.

[0012] Beneficial effects:

[0013] This invention achieves the folding or unfolding of the ramp by rotating and sliding the lower half of the ramp around the pivot and using the limiting groove as the moving path. The structure is simple and the operation is convenient. The staggered folding design of the upper and lower halves makes the folded ramp smaller and greatly reduces transportation costs.

[0014] After the ramp is deployed, the two ends of the lower half are tangent to the upper half and the ground, respectively, while the bottom of the upper half stands upright on the ground. The top of the upper half is then placed on the vehicle's cargo box via a baffle, allowing for vehicle loading. As the vehicle moves from the lower half to the upper half, the entire ramp has two support points with respect to the ground. The intermediate support is not provided by external attachments, but rather by the ramp's own first and second arc-shaped support pipes, resulting in better strength and greater load-bearing capacity. When the vehicle moves to the lower half, pressure is first applied to the second connecting piece on the lower half. This second connection, through the edge plate, transfers the force to the second and first support pipes. Both the first and second support pipes are arc-shaped structures, further enhancing their load-bearing capacity. This effectively ensures the ramp's strength and stability. Attached Figure Description

[0015] Figure 1This is a structural diagram of the ramp of this utility model.

[0016] Figure 2 This is a diagram of the folding structure of the ramp of this utility model;

[0017] Figure 3 This is a structural diagram of the upper half of this utility model;

[0018] Figure 4 This is an enlarged view of point A in this utility model;

[0019] Figure 5 This is an enlarged view of section B of this utility model;

[0020] Figure 6 This is a structural diagram of the lower half of this utility model;

[0021] Figure 7 This is an enlarged view of section C of this utility model.

[0022] In the diagram: 1. Upper half; 11. First arc-shaped support tube; 12. Connecting plate; 13. Baffle; 14. Limiting groove; 2. Lower half; 21. Rotating shaft; 22. Second arc-shaped support tube; 23. Second connecting plate; 24. Edge banding plate; 3. First limiting structure; 31. U-shaped groove; 4. Second limiting structure; 41. Arc-shaped groove. Detailed Implementation

[0023] 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.

[0024] Example

[0025] like Figure 1 - Figure 7 As shown, the heavy-duty folding ramp includes an upper half 1 and a lower half 2, both of which are arc-shaped frame structures. The upper half 1 includes two parallel first arc-shaped support tubes 11 and multiple first connecting plates 12 connecting the two first arc-shaped support tubes 11. The multiple first connecting plates 12 are fixedly connected to the convex surface of the first arc-shaped support tubes 11 at intervals and are all distributed in the upper half of the first arc-shaped support tubes 11. The two first arc-shaped support tubes 11 are fixedly connected to baffles 13 near the first connecting plates 12.

[0026] The lower half 2 includes two parallel second arc-shaped support tubes 22 and multiple second connecting plates 23 connecting the two second arc-shaped support tubes 22. The two ends of the rotating shaft 21 pass through the two second arc-shaped support tubes 22 respectively. The multiple second connecting plates 23 are fixedly connected to the concave surface of the second arc-shaped support tubes 22 at intervals. One end of the two second arc-shaped support tubes 22 is fixedly connected to the rotating shaft 21.

[0027] Along the extension direction of the upper half 1, the upper half 1 is provided with a limiting groove 14 for the movement of the rotating shaft 21. There are two limiting grooves 14, which are respectively located on the opposite inner sides of the two first arc-shaped support tubes 11. At both ends of the limiting groove 14, there are a first limiting structure 3 and a second limiting structure 4 for the positioning and rotation of the rotating shaft 21. The first arc-shaped support tube 11 is embedded with a first limiting structure 3 near the first connecting plate 12. The first limiting structure 3 is provided with a U-shaped groove 31 communicating with the limiting groove 14. The first arc-shaped support tube 11 is detachably installed with a second limiting structure 4 away from the first connecting plate 12 by screws. The second limiting structure 4 is provided with an arc-shaped groove 41 communicating with the limiting groove 14.

[0028] The two ends of the second connecting plate 23 extend into the second arc-shaped support tubes 22. The two second arc-shaped support tubes 22 are integrally formed with a U-shaped edging plate 24. The edging plate 24 wraps around the end of the second connecting plate 23. The two second arc-shaped support tubes 22 are located between the two first arc-shaped support tubes 11. At least a part of the edging plate 24 presses against the first arc-shaped support tube 11.

[0029] The top surfaces of both the first connecting plate 12 and the second connecting plate 23 are provided with anti-slip textures.

[0030] The working principle of this utility model can be summarized as follows:

[0031] like Figure 1 As shown, the ramp is in a folded state. At this time, the pivot 21 is located within the arc-shaped groove 41, and two second arc-shaped support tubes 22 are staggered between the two first arc-shaped support tubes 11. The convex surface of the edge-sealing plate 24 presses against the concave surface of the first arc-shaped support tube 11. The edge-sealing plate 24 not only improves the overall connection between the second connecting plate 23 and the second arc-shaped support tubes 22, but also ensures the uniformity of force transmission, thereby improving the ramp's load-bearing capacity. The entire ramp is simple to fold and easy to operate. Through the staggered folding design of the upper and lower pieces, the folded ramp has a smaller volume, greatly reducing transportation costs.

[0032] Rotate the lower half 2 around the pivot 21 so that the convex surface of the lower half 2 contacts the convex surface of the upper half 1. Then lift the pivot 21 out of the arc-shaped groove 41 of the second limiting structure 4 and move it along the limiting groove 14 to the U-shaped groove 31 of the first limiting structure 3 to switch to the unfolded state.

[0033] like Figure 2 As shown, the ramp is in the unfolded state. At this time, the two ends of the lower half 2 are tangent to the upper half 1 and the ground respectively, and the bottom end of the upper half 1 stands on the ground. The top of the upper half 1 is placed on the cargo box of the vehicle through the baffle 13, and the vehicle loading operation can be carried out.

[0034] As the vehicle moves from the lower half 2 to the upper half 1, the entire ramp has two support points between itself and the ground. The intermediate support is not provided by external attachments, but by the ramp's own first arc-shaped support pipe 11 and second arc-shaped support pipe 22, resulting in better strength and greater load capacity. When the vehicle moves to the lower half 2, pressure is first applied to the second connecting piece on it. The second connecting piece transmits the force to the second and first support pipes through the edge plate 24. Both the first and second support pipes are arc-shaped structures, further enhancing their load-bearing capacity. This effectively ensures the ramp's strength and stability.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A heavy-duty folding ramp, characterized in that, It includes an upper half (1) and a lower half (2), both of which are arc-shaped frame structures. One end of the lower half (2) is fixedly connected to a rotating shaft (21), which is movably connected to the upper half (1). Along the extension direction of the upper half (1), the upper half (1) is provided with a limiting groove (14) for the rotating shaft (21) to move. The two ends of the limiting groove (14) are respectively provided with a first limiting structure (3) and a second limiting structure (4) for the rotating shaft (21) to be positioned and rotated.

2. The heavy-duty folding ramp according to claim 1, characterized in that, The upper half (1) includes two parallel first arc-shaped support tubes (11) and multiple first connecting plates (12) connecting the two first arc-shaped support tubes (11). The multiple first connecting plates (12) are fixedly connected to the convex surface of the first arc-shaped support tubes (11) at intervals and are all distributed in the upper half of the first arc-shaped support tubes (11). The two first arc-shaped support tubes (11) are fixedly connected to baffles (13) close to the first connecting plates (12).

3. The heavy-duty folding ramp according to claim 2, characterized in that, Two limiting grooves (14) are provided, and are respectively located on the inner side of the two first arc-shaped support tubes (11). The first arc-shaped support tube (11) is embedded with a first limiting structure (3) near the first connecting plate (12). The first limiting structure (3) is provided with a U-shaped groove (31) communicating with the limiting groove (14). The first arc-shaped support tube (11) is detachably connected to a second limiting structure (4) away from the first connecting plate (12). The second limiting structure (4) is provided with an arc-shaped groove (41) communicating with the limiting groove (14).

4. The heavy-duty folding ramp according to claim 3, characterized in that, The lower half (2) includes two parallel second arc-shaped support tubes (22) and multiple second connecting plates (23) connecting the two second arc-shaped support tubes (22). The two ends of the rotating shaft (21) pass through the two second arc-shaped support tubes (22) respectively, and the multiple second connecting plates (23) are fixedly connected to the concave surface of the second arc-shaped support tubes (22) at intervals.

5. The heavy-duty folding ramp according to claim 4, characterized in that, The second arc-shaped support tubes (22) extend from both ends of the second connecting plate (23). The two second arc-shaped support tubes (22) are integrally formed with a U-shaped edging plate (24). The edging plate (24) wraps around the end of the second connecting plate (23). The two second arc-shaped support tubes (22) are located between the two first arc-shaped support tubes (11). At least a portion of the edging plate (24) presses against the first arc-shaped support tube (11).

6. The heavy-duty folding ramp according to claim 5, characterized in that, The top surfaces of the first connecting plate (12) and the second connecting plate (23) are provided with anti-slip texture.

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