Semitrailer ladder stand with supporting structure

Abstract

The utility model relates to the field of semitrailer crawling ladders, in particular to a semitrailer crawling ladder with a supporting structure. The semitrailer crawling ladder comprises a crawling ladder body suitable for being connected with a frame in a hinged and matched mode; the supporting structure comprises a supporting frame which is in hinged matched connection with the crawling ladder main body, a supporting rod which is in telescopic matched connection with the supporting frame, and a locking piece which is arranged on the crawling ladder main body; the supporting frame is fixedly connected with the supporting rod through a pin shaft; the locking piece comprises a mounting seat mounted on the ladder stand main body and a bolt in sliding connection with the mounting seat, and an insertion hole matched with the bolt is formed in the supporting rod. According to the semitrailer crawling ladder with the supporting structure, the supporting structure is arranged, when the supporting frame and the supporting rod are put down, the crawling ladder body can be supported, and the crawling ladder body is prevented from being bent; and the ladder stand body can be limited through the locking piece when being folded, so that the support frame and the support rod are prevented from shaking to damage the ladder stand body.

Description

Technical Field

[0001] This utility model relates to the field of semi-trailer ladders, and more specifically to a semi-trailer ladder with a support structure. Background Technology

[0002] Folding ramps are an important component of semi-trailers. When the folding ramps are lowered, other vehicles or heavy equipment to be transported can be moved onto the semi-trailer via the folding ramps.

[0003] Existing ladders, designed to facilitate the climbing of vehicles and heavy equipment, often have a relatively gentle angle, resulting in a longer ladder length. When loading transport vehicles or heavy equipment, excessive weight can cause the ladder to bend in the middle, thus affecting the loading process.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To improve or solve the technical problem of easy bending in the middle of the ladder in the prior art, this utility model provides a semi-trailer ladder with a support structure. The semi-trailer ladder includes: a ladder body adapted to form a hinged connection with the vehicle frame; a support structure including a support frame hinged to the ladder body, a support rod telescopically connected to the support frame, and a locking member installed on the ladder body; the support frame and the support rod are fixedly connected by a pin; the locking member includes a mounting seat installed on the ladder body and a pin slidably connected to the mounting seat, and a socket for the pin is provided on the support rod.

[0006] This utility model discloses a semi-trailer ladder with a support structure, comprising a ladder body and a support structure. The support structure includes a support frame, support rods, and locking components. The support frame and support rods form a telescopic connection and are fixedly connected by a pin, allowing the height of the support structure to be adjusted according to actual conditions, thus facilitating support for the ladder body and preventing it from bending. Simultaneously, it allows for convenient installation and disassembly of various components on the ladder body during inspection and maintenance. The locking components are installed on the ladder body and form a plug-in connection with the support rods, allowing for easy retraction of the support frame and support rods onto the ladder body, preventing them from swaying and damaging the ladder body. Through the above design, this utility model discloses a semi-trailer ladder with a support structure. When the support frame and support rods are lowered, they support the ladder body, preventing bending; and when retracted, the locking components limit movement, preventing the support frame and support rods from swaying and damaging the ladder body.

[0007] Furthermore, a return spring is provided between the pin and the mounting base.

[0008] Furthermore, the mounting base includes a mounting plate connected to the ladder body, a first ear plate arranged at one end of the mounting plate, and a second ear plate arranged at the other end of the mounting plate; a limiting plate is provided on the pin and arranged between the first ear plate and the second ear plate; the return spring is sleeved on the circumferential outer side of the pin, and one end of the spring abuts against the limiting plate and the other end abuts against the first ear plate.

[0009] Furthermore, the pin includes a connecting portion connected to the mounting base and a handle portion arranged at an angle to the connecting portion.

[0010] Furthermore, a through hole matching the pin is provided on the support frame, and a plurality of limiting holes are provided on the support rod along the length direction of the support rod. The pin passes through the through hole and the limiting hole to connect the support frame and the support rod.

[0011] Furthermore, a support base is provided at the end of the support rod away from the support frame.

[0012] Furthermore, a hinge cylinder is provided on the main body of the ladder, and the support frame is rotatably sleeved on the outer circumferential side of the hinge cylinder.

[0013] Furthermore, the ladder body is connected to a hydraulic cylinder, one end of which is hinged to the ladder body and the other end is adapted to be hinged to the vehicle frame.

[0014] In summary, compared with the prior art, this utility model has the following beneficial effects:

[0015] The support frame and support rod form a telescopic connection, and are also fixedly connected by a pin. This allows the height of the support structure to be adjusted according to actual conditions, facilitating support for the ladder body and preventing it from bending. Locking devices are installed on the ladder body and interlock with the support rods, allowing for easy retraction of the support frame and rods onto the ladder body, preventing them from wobbling and damaging the ladder body. Attached Figure Description

[0016] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0017] Figure 1 This is a schematic diagram of an embodiment of a semi-trailer ladder with a supporting structure according to the present invention;

[0018] Figure 2This is another schematic diagram of an embodiment of a semi-trailer ladder with a supporting structure according to the present invention;

[0019] Figure 3 This is a schematic diagram of the support structure in a semi-trailer ladder with a support structure according to the present invention.

[0020] List of reference numerals in the attached drawings: 1. Ladder body; 11. First half; 12. Second half; 13. Hydraulic cylinder; 2. Support structure; 21. Support frame; 211. Through hole; 22. Support rod; 221. Support base; 23. Locking element; 231. Mounting base; 232. Pin; 233. Mounting plate; 234. First ear plate; 235. Second ear plate; 236. Connecting part; 237. Handle part; 238. Limiting plate; 24. Hinge cylinder; 241. Fixed shaft; 242. Converging ring; 25. Return spring. Detailed Implementation

[0021] 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.

[0022] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are 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" and "second" 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," "setting," and "connection" 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 direct connection, an indirect connection through an intermediate medium, or a connection within 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] To improve or solve the technical problem of easy bending in the middle of the ladder in the prior art, this utility model provides a semi-trailer ladder with a support structure. The semi-trailer ladder includes: a ladder body 1, adapted to form a hinged connection with the vehicle frame; a support structure 2, including a support frame 21 that forms a hinged connection with the ladder body 1, a support rod 22 that forms a telescopic connection with the support frame 21, and a locking member 23 installed on the ladder body 1; the support frame 21 and the support rod 22 are fixedly connected by a pin; the locking member 23 includes a mounting seat 231 installed on the ladder body 1, and a pin 232 that forms a sliding connection with the mounting seat 231, and a socket for the pin 232 is provided on the support rod 22.

[0025] Figure 1 This is a schematic diagram of an embodiment of a semi-trailer ladder with a supporting structure according to this utility model. Figure 1 As shown, the present invention provides a semi-trailer ladder with a support structure, comprising a ladder body 1 and a support structure 2.

[0026] See also Figure 1 The ladder body 1 includes a first half 11 that is hinged to the frame, and a second half 12 that is hinged to the first half 11. A hinge seat is provided on the first half 11, and a hydraulic cylinder 13 is connected to the hinge seat. One end of the hydraulic cylinder 13 is hinged to the hinge seat, and the other end is hinged to the frame, thereby driving the first half 11 to rotate.

[0027] Figure 2 This is another schematic diagram of an embodiment of a semi-trailer ladder with a supporting structure according to this utility model. Figure 3 This is a schematic diagram of the support structure in a semi-trailer ladder with a support structure according to this utility model. Figure 1 , Figure 2 and Figure 3As shown, the support structure 2 includes a support frame 21 mounted on the ladder body 1, a support rod 22 telescopically connected to the support frame 21, and a locking member 23 mounted on the ladder body 1. A hinge cylinder 24 is provided on the ladder body 1, and the support frame 21 is rotatably fitted around the circumferential outer side of the hinge cylinder 24. In one or more embodiments, the hinge cylinder 24 is generally cylindrical and fixed to the ladder body 1 by a fixing shaft 241. A retaining ring 242 is provided on the side of the hinge cylinder 24 away from the ladder body 1, the diameter of the retaining ring 242 being larger than the diameter of the hinge cylinder 24, thereby constraining the support frame 21 between the retaining ring 242 and the ladder body 1. The support frame 21 is generally rectangular, and a through hole 211 is provided on the support frame 21. A pin is provided at the through hole 211, passing through the support frame 21 and the support rod 22, thereby fixing the support rod 22 to the support frame 21. Furthermore, the support rod 22 is telescopically arranged within the support frame 21. Multiple limiting holes are provided on the support rod 22 along its length, and a pin passes through the through hole 211 and the limiting holes to connect the support frame 21 and the support rod 22. Furthermore, a support base 221 is provided at the end of the support rod 22 away from the support frame 21. The support base 221 is generally rectangular in shape, thereby increasing the contact area with the ground. Furthermore, an insertion hole is provided on the support rod 22. For example, the support rod 22 is a hollow rod, and the insertion hole is formed in the support base 221.

[0028] See also Figure 1 , Figure 2 and Figure 3 The locking element 23 is installed on the ladder body 1. In one or more similar configurations, the locking element 23 includes a mounting base 231 mounted on the ladder body 1 and a pin 232 that is slidably connected to the mounting base 231. The mounting base 231 includes a mounting plate 233 connected to the ladder body 1, a first ear plate 234 disposed at one end of the mounting plate 233, and a second ear plate 235 disposed opposite to the first ear plate 234. The mounting plate 233 is welded to the ladder body 1. Sliding holes that mate with the pin 232 are provided on the first ear plate 234 and the second ear plate 235, and the pin 232 is slidably connected to the first ear plate 234 and the second ear plate 235. Further, the pin 232 includes a horizontally extending connecting portion 236 and a handle portion 237 arranged at an angle to the connecting portion 236. A limiting plate 238 is provided on the connecting portion 236, and the limiting plate 238 is arranged between the first ear plate 234 and the second ear plate 235. A return spring 25 is sleeved on the circumferential outer side of the connecting portion 236, and the two ends of the return spring 25 abut against the limiting plate 238 and the first ear plate 234, respectively. Based on Figure 1In the indicated position, pull the handle 237, the limit plate 238 and the connecting part 236 move to the left, rotate the support rod 22 to the locking part 23, release the handle 237, the connecting part 236 moves to the right under the reaction force of the return spring 25 and extends into the insertion hole of the support base 221, thereby tightening the support rod 22 and the support frame 21 onto the ladder body 1.

[0029] 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 such changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A semi-trailer ladder with a supporting structure, characterized in that, include: The ladder body (1) is suitable for forming a hinged connection with the frame; The support structure (2) includes a support frame (21) that is hinged to the ladder body (1), a support rod (22) that is telescopically connected to the support frame (21), and a locking member (23) installed on the ladder body (1); the support frame (21) and the support rod (22) are fixedly connected by a pin; the locking member (23) includes a mounting seat (231) installed on the ladder body (1) and a pin (232) that is slidably connected to the mounting seat (231), and a socket for matching the pin (232) is provided on the support rod (22).

2. A semi-trailer ladder with a supporting structure according to claim 1, characterized in that, A return spring (25) is provided between the pin (232) and the mounting base (231).

3. A semi-trailer ladder with a supporting structure according to claim 2, characterized in that, The mounting base (231) includes a mounting plate (233) connected to the ladder body (1), a first ear plate (234) arranged at one end of the mounting plate (233), and a second ear plate (235) arranged at the other end of the mounting plate (233); a limiting plate (238) is provided on the pin (232) between the first ear plate (234) and the second ear plate (235); the return spring (25) is sleeved on the circumferential outer side of the pin (232), and one end of it abuts against the limiting plate (238), and the other end abuts against the first ear plate (234).

4. A semi-trailer ladder with a supporting structure according to claim 1, characterized in that, The pin (232) includes a connecting portion (236) connected to the mounting base (231) and a handle portion (237) arranged at an angle to the connecting portion (236).

5. A semi-trailer ladder with a supporting structure according to claim 1, characterized in that, A through hole (211) matching the pin is provided on the support frame (21), and a plurality of limiting holes are provided on the support rod (22) along the length direction of the support rod (22). The pin passes through the through hole (211) and the limiting holes to connect the support frame (21) and the support rod (22).

6. A semi-trailer ladder with a supporting structure according to claim 5, characterized in that, A support base (221) is provided at one end of the support rod (22) away from the support frame (21).

7. A semi-trailer ladder with a supporting structure according to claim 1, characterized in that, A hinge cylinder (24) is provided on the ladder body (1), and the support frame (21) is rotatably sleeved on the circumferential outer side of the hinge cylinder (24).

8. A semi-trailer ladder with a supporting structure according to claim 1, characterized in that, The ladder body (1) is connected to a hydraulic cylinder (13). One end of the hydraulic cylinder (13) is hinged to the ladder body (1), and the other end is adapted to be hinged to the frame.

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