Spacing-adjustable boarding ladder

Abstract

The utility model relates to the technical field of boarding ladders, and discloses a spacing-adjustable boarding ladder which comprises supporting frames, fixing frames, supporting columns and ladder plates, the fixing frames are welded to one sides of the two sets of supporting frames, the supporting columns are arranged on one sides of the two sets of fixing frames, the ladder plates are welded to the inner sides of one set of supporting frames, and the ladder plates are welded to the inner sides of the other set of supporting frames. A supporting plate extending to the inner side of the ladder plate is welded to the inner side of the other supporting frame. The connecting rod and the threaded block are driven by the rotating block to rotate reversely, the threaded block spirally moves in the connecting pipe, the threaded block moves to drive the connecting rod, the rotating block, the supporting frame, the ladder plate and the sliding rod to move, the sliding groove and the ladder plate extend due to movement of the supporting frame, and the ladder width of the boarding ladder is adjusted; by adjusting the width of the boarding ladder, the boarding ladder can be suitable for car doors with different widths and users with different postures, so that the application range of the boarding ladder is expanded, and convenience is provided for the users.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle ladders, in particular to a vehicle ladder with adjustable spacing. Background Art

[0002] A vehicle ladder is an auxiliary equipment, mainly used to help people get in and out of vehicles conveniently and safely, especially some taller or larger vehicles, such as trucks, some special vehicles or some large buses. This ladder is usually designed to be strong and lightweight, and can be easily installed on the vehicle and conveniently disassembled and stored after use. The vehicle ladder is a very important tool for many industries, especially logistics, transportation and some special industries. It can not only help workers enter the vehicle quickly and safely and improve work efficiency, but also reduce injuries that may be caused by climbing vehicles.

[0003] When using the existing vehicle loading ladder, the top of the ladder is leaned against the vehicle door, and the user climbs up through the pedals of the ladder. Since the door widths and body shapes of different vehicles and different users are different, ladders with different ladder widths are required. However, the pedals of most ladders are fixed structures, so the ladder width cannot be adjusted, which makes the ladder limited in use and inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a vehicle access ladder with adjustable spacing to solve the technical problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle ladder with adjustable spacing, comprising a support frame, a fixed frame, a support column and a ladder plate, one side of two groups of the support frames are welded with a fixed frame, one side of two groups of the fixed frames are provided with a support column, and the inner side of one group of the support frames is welded with a ladder plate.

[0006] Preferably, a support plate extending to the inner side of the ladder plate is welded to the inner side of another group of the support frames, a sliding groove is opened inside the support plate, a sliding rod passing through the sliding groove is welded inside the ladder plate, and a connecting pipe is welded to the inner side of one group of the support frames below the support plate.

[0007] Preferably, a threaded block is provided inside the connecting pipe, a connecting rod penetrating the support frame is welded to one side of the threaded block, and a rotating block is welded to one end of the connecting rod away from the threaded block.

[0008] Preferably, anti-sliding blocks are welded to the bottom ends of the two groups of support frames.

[0009] Preferably, a fixing rod extending into the interior of the fixing frame is welded to one side of the two groups of support columns, and an annular tooth groove is formed inside the two groups of fixing frames.

[0010] Preferably, one end of the two groups of fixing rods is located inside the annular tooth groove and a limiting gear is welded thereon, and the outer walls of the two groups of fixing rods are located inside the fixing frame and are sleeved with springs.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When the width of the vehicle ladder needs to be adjusted, the connecting rod and the threaded block are reversed by the rotating block, and the threaded block moves spirally inside the connecting pipe. The movement of the threaded block drives the connecting rod, the rotating block, the support frame, the ladder plate and the sliding rod to move. The movement of the support frame extends the sliding groove and the ladder plate, so that the width of the vehicle ladder is adjusted. By adjusting the width of the vehicle ladder, the vehicle ladder can be suitable for doors of different widths and users of different body shapes, thereby expanding the scope of application of the vehicle ladder and providing convenience for users.

[0013] 2. When the vehicle ladder needs to be folded, the support column drives the fixing rod and the limit gear to move, the limit gear pushes the spring to compress and deform, and the limit gear is separated from the annular tooth groove, the support column, the fixing rod and the limit gear are rotated, and the support column is fitted with one side of the support frame, and the support column is released. The spring resets and pushes the limit gear to engage with the annular tooth groove, so that the angle between the fixing frame and the support frame is fixed, so that the vehicle ladder can be quickly folded, thereby saving the storage space of the vehicle ladder and making the vehicle ladder easy to carry and transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a three-dimensional exploded view of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the fixing frame of the utility model;

[0017] Figure 4 This is an exploded view of the ladder plate and the support plate of the utility model.

[0018] In the figure: 1, support frame; 101, anti-sliding block; 2, fixing frame; 3, support column; 301, fixing rod; 302, annular tooth groove; 303, limit gear; 304, spring; 4, ladder plate; 401, support plate; 402, sliding groove; 403, sliding rod; 404, connecting pipe; 405, threaded block; 406, connecting rod; 407, rotating block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The spacing-adjustable vehicle ladder described in this embodiment includes a support frame 1, a fixed frame 2, a support column 3 and a ladder plate 4. The fixed frame 2 is welded to one side of two groups of support frames 1, and the support column 3 is arranged on one side of two groups of fixed frames 2. The ladder plate 4 is welded to the inner side of one group of support frames 1.

[0021] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 It can be seen that a support plate 401 extending to the inner side of the ladder plate 4 is welded to the inner side of another group of support frames 1, a sliding groove 402 is opened inside the support plate 401, and a sliding rod 403 penetrating the sliding groove 402 is welded inside the ladder plate 4. A connecting pipe 404 is welded to the inner side of one group of support frames 1 below the support plate 401, and a threaded block 405 is arranged inside the connecting pipe 404. A connecting rod 406 penetrating the support frame 1 is welded to one side of the threaded block 405, and a rotating block 407 is welded to the end of the connecting rod 406 away from the threaded block 405. The outer wall of the support plate 401 is slidably connected to the inner wall of the ladder plate 4, the outer wall of the sliding rod 403 is slidably connected to the inner wall of the sliding groove 402, and the inner wall of the connecting pipe 404 is threadedly connected to the outer wall of the threaded block 405.

[0022] During specific implementation, when it is necessary to adjust the width of the ladder, the operator reverses the rotating block 407, and the reversal of the rotating block 407 drives the connecting rod 406 to reverse, and the reversal of the connecting rod 406 drives the threaded block 405 to reverse, and the threaded block 405 is threadedly connected to the connecting pipe 404, and the threaded block 405 spirally moves inside the connecting pipe 404, and the threaded block 405 moves to drive the connecting rod 406, the rotating block 407, the support frame 1, the ladder plate 4 and the sliding rod 403 to move, and the ladder plate 4 slides on the outside of the support plate 401, and the sliding rod 403 slides on the inner wall of the sliding groove 402, and the movement of the support frame 1 causes the sliding groove 402 and the ladder plate 4 to extend, so that the ladder width of the ladder is adjusted. By adjusting the ladder width of the ladder, the ladder can be suitable for doors of different widths and users of different body shapes, thereby expanding the scope of application of the ladder and providing convenience for users.

[0023] See also Figure 1 , Figure 2 and Figure 3 It can be seen that anti-sliding blocks 101 are welded to the bottom ends of the two groups of support frames 1 .

[0024] In specific implementation, when it is necessary to use the ladder, the operator adjusts the width of the ladder by rotating the block 407, the connecting rod 406, the threaded block 405 and the connecting tube 404, and then supports the support frame 1 by the anti-sliding plate 101, the support column 3 and the fixing frame 2, and places one end of the support frame 1 against the car door, and the user climbs up through the ladder plate 4 and the support plate 401.

[0025] See also Figure 1 , Figure 2 and Figure 3 It can be seen that one side of the two groups of support columns 3 is welded with a fixing rod 301 extending to the inside of the fixing frame 2, and the inside of the two groups of fixing frames 2 are opened with an annular tooth groove 302, one end of the two groups of fixing rods 301 is located inside the annular tooth groove 302 and a limiting gear 303 is welded thereon, the outer walls of the two groups of fixing rods 301 are located inside the fixing frame 2 and are sleeved with springs 304, the outer walls of the fixing rods 301 are slidably connected to the inner wall of the fixing frame 2, and the outer wall of the limiting gear 303 is snap-connected to the inner wall of the annular tooth groove 302.

[0026] When the jack is folded, the operator pulls the support column 3, the support column 3 moves and drives the fixing rod 301 to move, the fixing rod 301 moves and drives the limiting gear 303 to move, the limiting gear 303 pushes the spring 304 to compress and deform, and at the same time the limiting gear 303 separates from the annular tooth groove 302, the support column 3 rotates and fits one side of the support frame 1, the support column 3 rotates and drives the fixing rod 301 and the limiting gear 303 to rotate, so that the support column 3 and the support frame 1 are folded, the support column 3 is released, the spring 304 loses the limit and resets, the spring 304 resets and pushes the limiting gear 303 to engage with the annular tooth groove 302, so that the angle between the fixing frame 2 and the support frame 1 is fixed, so that the jack is easy to fold quickly, thereby saving the storage space of the jack, and making the jack easy to carry and transport.

[0027] To sum up, when the boarding ladder described in the utility model is in use, the operator adjusts the ladder width of the boarding ladder by rotating the block 407, the connecting rod 406, the threaded block 405 and the connecting tube 404, drives the fixing rod 301 and the limiting gear 303 to move through the support column 3, and the limiting gear 303 pushes the spring 304 to perform compression deformation. At the same time, the limiting gear 303 is separated from the annular tooth groove 302, and the support column 3, the fixing rod 301 and the limiting gear 303 are rotated, and one end of the support column 3 is perpendicular to the ground, and the support column 3 is released. The spring 304 resets and pushes the limiting gear 303 to engage with the annular tooth groove 302, so that the angle between the fixing frame 2 and the supporting frame 1 is fixed, and then the supporting frame 1 is supported by the anti-sliding block 101, the support column 3 and the fixing frame 2, and one end of the supporting frame 1 is placed against the car door, and the user climbs up through the ladder plate 4 and the support plate 401.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle access ladder with adjustable spacing, comprising a support frame (1), a fixing frame (2), a support column (3) and a ladder plate (4), characterized in that: A fixing frame (2) is welded to one side of the two groups of support frames (1), a supporting column (3) is arranged on one side of the two groups of fixing frames (2), and a ladder plate (4) is welded to the inner side of one group of support frames (1); A support plate (401) extending to the inside of the ladder plate (4) is welded to the inner side of another group of the support frames (1); a sliding groove (402) is provided inside the support plate (401); a sliding rod (403) penetrating the sliding groove (402) is welded inside the ladder plate (4); and a connecting pipe (404) is welded to the inner side of one group of the support frames (1) below the support plate (401); A threaded block (405) is disposed inside the connecting tube (404), a connecting rod (406) penetrating the support frame (1) is welded to one side of the threaded block (405), and a rotating block (407) is welded to one end of the connecting rod (406) away from the threaded block (405).

2. The spacing-adjustable vehicle ladder according to claim 1, characterized in that: Anti-sliding blocks (101) are welded to the bottom ends of the two groups of support frames (1).

3. The spacing-adjustable vehicle ladder according to claim 1, characterized in that: A fixing rod (301) extending into the interior of the fixing frame (2) is welded to one side of the two groups of support columns (3), and an annular tooth groove (302) is provided inside the two groups of fixing frames (2).

4. The spacing-adjustable vehicle ladder according to claim 3, characterized in that: One end of the two sets of fixing rods (301) is located inside the annular tooth groove (302) and is welded with a limit gear (303). The outer walls of the two sets of fixing rods (301) are located inside the fixing frame (2) and are sleeved with a spring (304).

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