Sliding widened ladder stand device suitable for semitrailer

Abstract

The utility model relates to the technical field of transportation equipment, in particular to a sliding widening ladder stand device for a semitrailer, which comprises a vehicle rear sealing frame and a ladder stand body, a lap joint assembly for placing the ladder stand body is arranged on the vehicle rear sealing frame, and the lap joint assembly comprises a positioning frame and a lap joint table. The positioning frame is fixedly connected with a vehicle rear sealing frame, the lap joint table is slidably connected with the positioning frame, the distance between the two ladder stand bodies can be changed through sliding of the lap joint table and the positioning frame, the ladder stand is suitable for transportation requirements of vehicles with different wheel treads, and the applicability of equipment is improved; a spring limiting pin can fix the moved lap joint table, it is guaranteed that the adjusted crawling ladder body can have the stable supporting capacity, and the whole equipment has the advantages of being simple in structure and easy to maintain and manufacture.

Description

Technical Field

[0001] This utility model relates to the field of transportation equipment technology, specifically to a sliding widening ladder device suitable for semi-trailers. Background Technology

[0002] With the rapid development of the global logistics and transportation industry, semi-trailers, as an efficient and economical freight transportation solution, have gradually become an indispensable tool in the logistics industry. Semi-trailers not only effectively improve transportation efficiency but also reduce transportation costs to a certain extent, thus finding widespread application in long-distance freight and logistics distribution.

[0003] However, in actual transportation, as market demand for cargo diversity continues to increase, traditional semi-trailers have revealed some limitations in certain specific situations. In particular, traditional semi-trailers often struggle to meet the transportation needs of special goods such as construction vehicles and agricultural machinery with varying wheelbases. These special goods, due to their different wheelbases, place more complex and diverse requirements on the transport vehicles. Currently, most traditional semi-trailers on the market have fixed rear ladders, meaning the left and right sides cannot be moved or adjusted. This design may not pose a significant problem when transporting regular goods, but it becomes problematic when encountering construction machinery and agricultural machinery with very small or very large wheelbases.

[0004] Because tires cannot accurately press onto the ramp, vehicles face difficulties in loading and unloading, increasing the difficulty and risk of transportation. Therefore, to meet these diverse transportation needs, there is an urgent need for a ramp device that can adapt to vehicles with different wheelbases. This new ramp device needs to possess sufficient flexibility and adjustability, capable of quickly adjusting according to the specific wheelbase of the goods to ensure that vehicles can load and unload goods smoothly and safely. This will not only greatly improve transportation efficiency but also effectively reduce risks and costs during transportation, providing strong support for the further development of the logistics and transportation industry. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a sliding widening ladder device suitable for semi-trailers, which can adjust the spacing to meet the transportation needs of engineering vehicles and agricultural machinery with different wheelbases.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sliding widening ladder device suitable for semi-trailers, comprising a vehicle rear sealing frame and a ladder body, wherein the vehicle rear sealing frame is provided with an overlapping component for placing the ladder body, the overlapping component comprising a positioning frame and an overlapping platform, the positioning frame being fixedly connected to the vehicle rear sealing frame, and the overlapping platform being slidably connected to the positioning frame.

[0007] As a further improvement to the above technical solution:

[0008] The outer wall of the positioning frame is provided with a concave groove, and the overlapping platform is provided with a sliding plate that cooperates with the concave groove. The sliding plate is provided with a positioning device.

[0009] The positioning device includes a spring positioning pin that is fixedly connected to the slide plate, and the rear sealing frame of the vehicle is provided with a through hole that cooperates with the spring positioning pin.

[0010] The number of through holes is multiple and they are distributed sequentially along the length of the positioning frame.

[0011] The number of overlapping components is two, and they are symmetrically distributed with the centerline of the rear frame of the vehicle as the axis.

[0012] The outer wall of the lap joint is provided with a lap groove for connecting the ladder body.

[0013] The beneficial effects of this utility model embodiment are as follows: The sliding widening ladder device suitable for semi-trailers includes a vehicle rear sealing frame and a ladder body. The vehicle rear sealing frame is provided with an overlapping component for placing the ladder body. The overlapping component includes a positioning frame and an overlapping platform. The positioning frame is fixedly connected to the vehicle rear sealing frame, and the overlapping platform is slidably connected to the positioning frame. The distance between the two ladder bodies can be changed by sliding the overlapping platform and the positioning frame, which is suitable for the transportation needs of vehicles with different wheelbases and improves the applicability of the equipment.

[0014] The spring limit pin can fix the moved platform, ensuring that the adjusted ladder body has stable support capacity. Moreover, the whole equipment has the advantages of simple structure and easy maintenance and manufacturing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0017] Figure 3 This is a schematic diagram of the installation structure of the positioning frame in this utility model.

[0018] In the diagram: 1. Rear end frame of the vehicle; 2. Ladder body; 3. Positioning frame; 4. Overlap platform; 5. Concave slide groove; 6. Slide plate; 7. Spring positioning pin; 8. Through hole; 9. Overlap groove. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] See Figure 1 As shown, a positioning frame 3 is installed on the rear frame 1 of the vehicle. There are two positioning frames 3 for placing two ladder bodies 2 located on both sides of the vehicle. A concave groove 5 is provided on the outer wall of the positioning frame 3. A slide plate 6 is provided in the concave groove 5. An overlapping platform 4 is provided on the outer wall of the slide plate 6. An overlapping slot 9 is provided on the overlapping platform 4. One end of the ladder body 2 is connected to the overlapping slot 9, and the other end is located on the ground, forming a ramp for loading and unloading vehicles and goods.

[0021] like Figure 2-3 As shown, a spring positioning pin 7 is installed on the slide plate 6, and multiple through holes 7 are provided on the rear sealing frame 1 of the vehicle to cooperate with the spring positioning pin 7. The design of the spring positioning pin 7 can fix the slide plate 6 after the position is adjusted, ensuring the stability of the ladder body 2 during use.

[0022] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0025] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A sliding widening ladder device suitable for semi-trailers, comprising a vehicle rear sealing frame (1) and a ladder body (2), characterized in that: The rear frame (1) of the vehicle is provided with an overlapping component for placing the ladder body (2). The overlapping component includes a positioning frame (3) and an overlapping platform (4). The positioning frame (3) is fixedly connected to the rear frame (1) of the vehicle, and the overlapping platform (4) is slidably connected to the positioning frame (3).

2. The sliding widening ladder device for a semi-trailer according to claim 1, characterized in that: The outer wall of the positioning frame (3) is provided with a concave groove (5), the overlapping platform (4) is provided with a sliding plate (6) that cooperates with the concave groove (5), and the sliding plate (6) is provided with a positioning device.

3. The sliding widening ladder device for a semi-trailer according to claim 2, characterized in that: The positioning device includes a spring positioning pin (7) fixedly connected to the slide plate (6), and the rear sealing frame (1) of the vehicle is provided with a through hole (8) that cooperates with the spring positioning pin (7).

4. The sliding widening ladder device for a semi-trailer according to claim 3, characterized in that: The number of through holes (8) is multiple and they are distributed sequentially along the length of the positioning frame (3).

5. The sliding widening ladder device for a semi-trailer according to any one of claims 1-4, characterized in that: The number of overlapping components is two, and they are symmetrically distributed with the centerline of the rear sealing frame (1) of the vehicle as the axis.

6. The sliding widening ladder device for a semi-trailer according to any one of claims 1-4, characterized in that: The outer wall of the lap joint (4) is provided with an lap joint slot (9) for connecting the ladder body (2).

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