Multifunctional boarding ladder

Abstract

A multifunctional boarding ladder comprises a U-shaped ladder box used for containing a ladder assembly and a folding ladder assembly, sliding grooves are formed in the inner walls of the left side and the right side of the U-shaped ladder box, the left side and the right side of the folding ladder assembly are each provided with two ladder columns, the two ladder columns are arranged in an upper layer and a lower layer in parallel, and a plurality of pedals are arranged between the ladder columns on the left side and the right side. The front end and the rear end of the left side and the right side of each pedal are hinged to the upper-layer ladder column and the lower-layer ladder column respectively to form a foldable ladder frame, the fixed ends of the upper-layer ladder column and the lower-layer ladder column are hinged to sliding blocks respectively, the sliding blocks on the left side and the right side of the foldable ladder frame are arranged in sliding grooves of the U-shaped ladder box in a sliding fit mode, and a plurality of idler wheels are evenly arranged on the outer sides of the upper-layer ladder columns on the left side and the right side of the foldable ladder frame. The upper-layer ladder frame is provided with a left roller set and a right roller set, the upper end face of each roller is higher than the upper end face of the upper-layer ladder frame and used for enabling goods to move along the left roller set and the right roller set when the goods are loaded and unloaded, the sliding block is provided with a limiting structure, and the sliding stroke of the sliding block is limited through limiting pins arranged on the left side wall and the right side wall of the U-shaped ladder box.

Description

Technical Field

[0001] The utility model relates to the field of vehicle boarding ladders, in particular to a multifunctional vehicle boarding ladder. Background Art

[0002] The existing boarding ladder consists of a ladder frame and a pedal. The ladder frame of this boarding ladder takes up a large space and cannot be folded and is difficult to store. It usually takes up a large storage space. The patent document with announcement number CN 220285641 U discloses a new type of hidden pull-out folding ladder structure. This ladder includes a folding ladder and a guide rail connected by a sliding support. This ladder can be folded and is easy to store. However, this ladder has a single function and only has the function of facilitating people to get on and off the vehicle. When loading and unloading goods, a crane is usually used for loading and unloading, or a springboard is used for manual loading and unloading. Therefore, there is a need for a boarding ladder that can assist in loading and unloading goods and is easy to store. Summary of the invention

[0003] The purpose of the utility model is to provide a multifunctional boarding ladder to address the corresponding deficiencies of the prior art. The multifunctional boarding ladder is convenient to store and can assist in quickly loading and unloading goods.

[0004] The foldable ladder frame is a kind of multifunctional boarding ladder, comprising a U-shaped ladder box for storing a ladder frame, and a foldable ladder frame, wherein the left and right inner walls of the U-shaped ladder box are provided with slide grooves, and the left and right inner walls of the foldable ladder frame are respectively provided with two ladder posts on the left and right sides, and the two ladder posts are arranged in parallel in the upper and lower layers, and a plurality of steps are arranged between the ladder posts on the left and right sides, and the front and rear ends of the left and right sides of each step are hinged to the upper and lower ladder posts respectively to form a foldable ladder frame. The fixed ends of the upper and lower ladder posts are respectively hinged to a slider, and the sliders on the left and right sides of the foldable ladder frame are slidably matched in the slide grooves of the U-shaped ladder box, and a plurality of rollers are evenly arranged on the outer sides of the upper ladder posts on the left and right sides of the foldable ladder frame to form left and right roller groups, and the upper end surface of each roller is higher than the upper end surface of the upper ladder frame, and the cargo can be moved along the left and right roller groups when loading and unloading cargo. A limiting structure is arranged on the slider, and the sliding stroke of the slider is limited by the limiting pins arranged on the left and right side walls of the U-shaped ladder box.

[0005] The axial thickness of the roller is smaller than the lateral thickness of the slider.

[0006] The left and right roller groups are symmetrically arranged on the left and right sides of the foldable ladder frame, and two rollers are arranged between two adjacent pedals.

[0007] The upper end surface of the roller is 15 mm higher than the upper end surface of the upper ladder frame.

[0008] A bottom support frame is arranged at the free end of the lower ladder columns on both sides of the ladder frame, and the bottom support frame is hinged and fixed to the lower ladder columns. When the bottom support frame is in a folded state, it is fixed to the ladder columns of the lower layer of the ladder frame by a second fixing pin, and when the bottom support frame is in a supporting state, it is fixed by a first fixing pin.

[0009] The bottom support frame is in an I-shape, and the two legs of the bottom support frame are telescopic structures including an inner tube and an outer tube. A plurality of through holes for locking the height of the bottom support frame are arranged in the inner tube, and the height of the two legs is locked by fixing a second latch.

[0010] The side arm of the slider is provided with an open slot, the slot opening of the open slot is opposite to the slot opening of the slide slot of the ladder box, a limit block is provided in the open slot of the slider, and the limit block and the limit pin limit the sliding stroke of the slider.

[0011] A plurality of supporting beams are arranged at the upper and lower ends of the two side arms of the U-shaped ladder box.

[0012] The advantages of the utility model are: the boarding ladder has a simple structure and multiple uses. In addition to being convenient for people to get on and off the vehicle, the roller set on the boarding ladder and the folding support frame at the bottom can also assist in loading and unloading box-type goods, making the loading and unloading of goods more labor-saving. The folding support frame is a telescopic structure, and the angle of the loading and unloading slide can be adjusted by adjusting the height of the bottom support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the bottom support frame of the utility model in a folded state;

[0015] Figure 3 This is a schematic diagram of the bottom support frame structure of the utility model. DETAILED DESCRIPTION

[0016] like Figures 1 to 3As shown, a multifunctional boarding ladder comprises a U-shaped ladder box 1 for storing a ladder frame 4, and a foldable ladder frame 4, wherein the inner walls on the left and right sides of the U-shaped ladder box 1 are provided with slide grooves 1a, and the upper and lower ends of the two side arms of the U-shaped ladder box are provided with a plurality of supporting beams. The foldable ladder frame 4 is provided with two ladder columns 4a on the left and right sides, and the two ladder columns 4a are provided in parallel in the upper and lower layers, and a plurality of pedals 5 are provided between the ladder columns 4a on the left and right sides, and the front and rear ends of the left and right sides of each pedal 5 are respectively hinged to the upper and lower ladder columns 4a to form a foldable ladder frame 4, and the fixed ends of the upper and lower ladder columns 4a are respectively hinged to a slider 10, and the two sliders 10 are connected by a supporting beam. The sliders 10 on the left and right sides of the foldable ladder frame 4 are slidably matched in the slide groove 1a of the U-shaped ladder box 1. A plurality of rollers are evenly arranged on the outer sides of the upper ladder columns on the left and right sides of the foldable ladder frame 4 to form a left and right roller group. The upper end surface of each roller is 15mm higher than the upper end surface of the upper ladder frame, which is used to enable the goods to move along the left and right roller groups when loading and unloading goods. The axial thickness of the roller is less than the lateral thickness of the slider 10 to prevent the rollers from interfering when the ladder frame 4 is folded and released. The left and right roller groups are symmetrically arranged on the left and right sides of the foldable ladder frame 4, and two rollers are arranged between two adjacent pedals 5. A limiting structure is arranged on the slider 10, and the sliding stroke of the slider 10 is limited by the limiting pins 2 arranged on the left and right side walls of the U-shaped ladder box 1. The side arm of the slider 10 is provided with an open groove, and the notch of the open groove is opposite to the notch of the slide groove 1a of the ladder box 1. A limiting block is arranged in the open groove of the slider 10, and the limiting block and the limiting pin limit the sliding stroke of the slider 10. A bottom support frame 6 is provided at the free end of the lower ladder column 4a on both sides of the ladder frame 4, and the bottom support frame 6 is hingedly fixed to the lower ladder column 4a. When the bottom support frame 6 is in a folded state, it is fixed to the ladder column 4a of the lower layer of the ladder frame 4 by a second fixing latch 7, and when the bottom support frame 6 is in a supporting state, it is fixed by a first fixing latch 8. The bottom support frame 6 is in an I-shape, and the two legs of the bottom support frame 6 are a telescopic structure including an inner tube and an outer tube, and a plurality of through holes for locking the height of the bottom support frame 6 are provided in the inner tube, and the two legs are locked in height by a second fixing latch 7.

[0017] This multifunctional boarding ladder is installed at the bottom of the carriage. When in use, you only need to pull out the ladder frame 4 to use it. When loading and unloading goods, the left roller group 9 and the right roller group 3 on both sides of the ladder frame 4 can be used to assist in loading and unloading goods. When loading and unloading goods, the bottom support frame 6 at the bottom of the ladder frame 4 can be opened and fixed with a fixing latch 8, and the height of the bottom support frame 6 can be adjusted to adjust the angle of the loading and unloading slideway, thereby saving more effort. After use, the fixing latch 8 that fixes the bottom support frame 6 is removed, the bottom support frame 6 is folded and retracted, and then fixed with a fixing latch 2 7, and then the ladder frame 4 is pushed back into the ladder box.

[0018] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A multifunctional boarding ladder, comprising a U-shaped ladder box (1) for storing a ladder frame (4), and a foldable ladder frame (4), wherein the inner walls of the left and right sides of the U-shaped ladder box (1) are provided with slide grooves (1a), and the left and right sides of the foldable ladder frame (4) are respectively provided with two ladder columns (4a), and the two ladder columns (4a) are arranged in parallel in the upper and lower layers, and a plurality of pedals (5) are arranged between the ladder columns (4a) on the left and right sides, and the front and rear ends of the left and right sides of each pedal (5) are respectively hinged to the upper and lower ladder columns (4a) to form a foldable ladder frame (4), and the fixed ends of the upper and lower ladder columns (4a) are respectively hinged to a slider (10), and the sliders (10) on the left and right sides of the foldable ladder frame (4) are slidably matched in the slide grooves (1a) of the U-shaped ladder box (1), characterized in that: A plurality of rollers are evenly arranged on the outer sides of the upper ladder columns on the left and right sides of the foldable ladder frame (4) to form left and right roller groups, and the upper end surface of each roller is higher than the upper end surface of the upper ladder frame, so that the goods can move along the left and right roller groups when loading and unloading goods. The slider (10) is provided with a limiting structure, and the sliding stroke of the slider (10) is limited by limiting pins (2) arranged on the left and right side walls of the U-shaped ladder box (1).

2. The multifunctional boarding ladder according to claim 1 is characterized in that: The axial thickness of the roller is smaller than the lateral thickness of the slider (10).

3. The multifunctional boarding ladder according to claim 1 is characterized in that: The left and right roller groups are symmetrically arranged on the left and right sides of the foldable ladder frame (4), and two rollers are arranged between two adjacent pedals (5).

4. The multifunctional boarding ladder according to claim 1 is characterized in that: The upper end surface of the roller is 15 mm higher than the upper end surface of the upper ladder frame.

5. The multifunctional boarding ladder according to claim 1 is characterized in that: A bottom support frame (6) is provided at the free end of the lower ladder columns (4a) on both sides of the ladder frame (4), and the bottom support frame (6) is hingedly fixed to the lower ladder columns (4a). When the bottom support frame (6) is in a folded state, it is fixed to the lower ladder columns (4a) of the ladder frame (4) by a second fixing pin (7), and when the bottom support frame (6) is in a supported state, it is fixed by a first fixing pin (8).

6. The multifunctional boarding ladder according to claim 5, characterized in that: The bottom support frame (6) is in an I-shape, and the two legs of the bottom support frame (6) are telescopic structures comprising an inner tube and an outer tube, a plurality of through holes for locking the height of the bottom support frame (6) are arranged in the inner tube, and the height of the two legs is locked by fixing a second latch pin (7).

7. The multifunctional boarding ladder according to claim 1 is characterized in that: The side arm of the slider (10) is provided with an open slot, the slot opening of the open slot is opposite to the slot opening of the slide slot (1a) of the ladder box (1), a limit block is provided in the open slot of the slider (10), and the limit block and the limit pin limit the sliding stroke of the slider (10).

8. The multifunctional boarding ladder according to claim 1, characterized in that: A plurality of supporting beams are arranged at the upper and lower ends of the two side arms of the U-shaped ladder box.

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