Transversely folding integrated ramp

Abstract

The application provides a transverse folding integrated slow-moving ladder, which comprises three parallel vertical plates, i.e. left, middle and right vertical plates, and step plates installed between two vertical plates, wherein the step plates are divided into left and right parts, the middle part is connected by a hinge and can be folded, and the two ends are hinged on the adjacent two vertical plates to form steps which are gradually raised; the step plate on one side of the middle vertical plate leads to the ground, the step plate on the other side leads to the opening of the shelter, and the two step plates are communicated at the opening of the middle vertical plate. The application can save space and meet the requirements of safety and comfort.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of accessories of expandable activity space such as mobile shelter and integrated house. BACKGROUND

[0002] The existing mobile shelter is widely used in civil field, such as mobile blood donation vehicle. With the development of society, the integration of shelter equipment is required to be higher and higher, and the space utilization is also required to be higher and higher. The existing expansion mode can only increase limited space, which cannot meet more requirements.

[0003] In the mobile shelter, there must be a stair structure, such as a simple folding ladder, a separate walk-in ladder cabin that needs to be installed on site, a built-in ladder, or a ladder installed in an expansion cabin.

[0004] The common folding ladder has the following types: one is a folding type pulled along the climbing direction, at least two ladders are combined, and when not in use, the upper and lower ladders are overlapped, and when in use, the multiple ladders are pulled apart; one is a multiple ladder connected by a shaft, which can be folded by 180 degrees, such as a foldable climbing ladder; one is a ladder using a four-bar linkage mechanism, when not in use, the ladder side rod and the step surface have a small angle, the whole ladder is lengthened and flattened, when in use, the ladder side rod and the step surface have a large angle, and the whole ladder is a space stereoscopic type, such as a multifunctional folding ladder; one is a folding straight ladder, each step can be retracted, when not in use, the distance between each step is reduced to save space. The above ladders can save space, but the safety and comfort are not high, the structures are generally simple, and there are no protective structures such as handrails and guardrails, and the steps have large intervals.

[0005] The common walk-in ladder cabin is a separate closed cabin, which has a fixed ladder structure inside, and is connected with the main cabin when in use and is fixedly installed; one is a fixed ladder installed in an expansion cabin of a mobile shelter, which is lowered when in use; when not in use, the ladder is retracted into the expansion cabin, and the expansion cabin is retracted into the main shelter. The two ladders are non-folding, stable, safe, and have handrails, but occupy a large space and cannot release space when not in use.

[0006] In summary, the existing ladder structure cannot combine space saving with safety and comfort. SUMMARY

[0007] In order to overcome the shortcomings of the prior art, the present application provides a transversely folded integrated slow ladder, which can save space and meet the requirements of safety and comfort.

[0008] The technical scheme adopted by the present application to solve its technical problems is: a transverse folding integrated slow climbing ladder, comprising three parallel vertical plates of left, middle and right, and a step pedal installed between the two vertical plates.

[0009] The step pedal is divided into left and right parts, and the middle part is connected by a hinge and can be folded, and the two ends are hinged on the adjacent two vertical plates to form steps that are gradually raised; the step pedal on one side of the middle vertical plate leads to the ground, and the step pedal on the other side leads to the opening of the shelter; the step pedals on both sides are connected at the opening of the middle vertical plate.

[0010] The upper edge of the middle vertical plate is hinged with an upper turning plate, which is turned up in place and locked by a latch during use.

[0011] The side wall of the vertical plate is provided with a groove, and a folding table is hinged on the upper edge of the groove; the folding table is a horizontal plane when unfolded, and is completely embedded in the groove when folded.

[0012] The side wall of the vertical plate is hinged with a handrail, which is turned down away from the side wall of the vertical plate during use; and the handrail is turned up close to the side wall of the vertical plate when folded.

[0013] The folding fence or handrail is connected between the adjacent vertical plates, or both the folding fence and the handrail are connected.

[0014] The folding fence comprises an outer frame, a vertical rod and a horizontal rod, one end of the two horizontal rods is hinged with one end of the vertical rod, and the other end is hinged in the adjacent outer frame, the other end of the vertical rod is hinged with one end of another two horizontal rods parallel to the two horizontal rods, and the structure is repeated regularly to form the folding fence.

[0015] The side wall of the vertical rod is recessed after cutting to avoid interference with the horizontal rod during folding.

[0016] The side wall of the vertical plate is provided with a groove block, the middle part of the groove block is provided with a groove, and the two ends of the handrail are installed in the groove of the groove block and fastened by tightening screws.

[0017] The present application can change the height and gentleness of climbing by increasing or decreasing the vertical plates, or by increasing or decreasing the number of step pedals between adjacent vertical plates.

[0018] The beneficial effects of the present application are:

[0019] 1) The transverse folding integrated slow climbing ladder of the present application has high folding efficiency, the unfolded overall width is more than 2 meters, and the overall width after folding is within 0.4 meters, which is convenient for carrying, transportation and flexible use.

[0020] 2) This invention uses a folding and compression method from the side (width) of the ladder. After folding and compression, the dimensions of the ladder in the vertical (height) and front-back (depth) directions are not changed. Only the width dimension changes (shortened). While ensuring high folding efficiency, it also takes into account comfort. When unfolded, it has a double-row ladder with handrails on both sides and guardrails along the entire ladder. The step spacing is low (160-180mm), which provides high comfort and safety, and is especially suitable for people with weak bodies.

[0021] 3) This invention is particularly suitable for use in medical systems. It features a double-row staircase with handrails on both sides, and guardrails along the entire staircase. The step spacing is low (160-180mm), and the step surface is coated with various non-slip and comfortable materials such as silicone and plastic. It has advantages in daily civilian use, mobile medical facilities, and fixed modular units, ensuring safety and reliability. Furthermore, it can be equipped with a folding table and stool structure at the staircase entrance, facilitating registration before use when needed.

[0022] 4) When the focus of this invention is on cost savings, steel structural components can be used; when the focus is on portability, materials such as aluminum-magnesium alloy can be used. The handrails can be made of metal or other materials such as plastic.

[0023] 5) This invention has a wide range of applications. It can be used as a standalone structure or combined with mobile cabins and prefabricated houses. It can be fixed inside mobile cabins and prefabricated houses and unfolded when needed, or it can be semi-fixed in other locations within mobile cabins and prefabricated houses and then hung on the main body or connected in other ways when in use. When used as a standalone structure, a rainproof canopy, rainproof side curtains, etc., can be added to the horizontally folding integrated staircase, allowing it to be used normally in various environments. A self-locking caster structure can be added to the bottom to facilitate the unfolding and folding of the horizontally folding integrated staircase when placed on the ground.

[0024] 6) This invention adopts a fully mechanical structure, which is simple in structure and easy to unfold and retract, and can be completed by a single person; it has high safety and good reliability. This invention can also use an electric or hydraulic drive structure to complete the shrinking and folding or unfolding process.

[0025] 7) This invention is not limited to a double-row staircase after unfolding. The length of the steps in the left and right directions can be shortened according to actual needs to become a single-row staircase, thus shortening the width of the horizontally folding integrated staircase after unfolding.

[0026] 8) The present application can change the overall size according to different audience groups, such as for the young children group, the overall size of the transversely folded integrated slow walking ladder can be reduced, the handrail height can be lowered, and the handrail height can be lowered; for the elderly group, the overall size of the transversely folded integrated slow walking ladder can be wider, and the detachable handrail located in the middle of the double-row walking ladder can be increased, which can increase the softness and anti-skid performance of the step surface material.

[0027] 9) The present application can flexibly increase the foldable table and chair in the income side plate during design, meet different additional needs, save space, and use flexibly without the need for additional special carrying.

[0028] 10) The space under the steps of the present application is surrounded by a folding fence for safety to prevent children from entering. When the folding fence (38, 40, 42) is connected to the main frame (left plate 24, middle plate 25, and right plate 26), this space can be used to store some temporary items in the unfolded state, which can improve the space utilization.

[0029] 11) The present application can simplify the structure according to the use condition. In order to reduce the weight, the folding fence can be removed, and five detachable handrails can be retained, and the number of detachable handrails can be appropriately increased; in order to facilitate and speed up the unfolding, the folding fence can be retained, and the five detachable handrails can be removed, because the detachable handrails need to be installed after the ladder is unfolded; for quick response and structure simplification, even the ladder in the form of a frame can be used, plus part of the folding fence (37, 39, 41).

[0030] 12) The special folding fence vertical rod (56, 57) and gasket (59-65) structure used in the folding fence of the present application can achieve height folding in the folded state, and can form a horizontal straight fence after unfolding, which can play the role of a handrail, and can form a grid-shaped fence in the lower half of the height area to prevent children from falling out; there is also a grid-shaped fence at the waist height of adults, which can temporarily provide support for the weak population. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a front view of the main frame in the unfolded state;

[0032] Figure 2 is a top view of the main frame in the unfolded state;

[0033] Figure 3 is a side view of the main frame in the unfolded state;

[0034] Figure 4 is an axial side view of the present application from the front right side in the unfolded state;

[0035] Figure 5 is an axial side view of the present application from the rear in the unfolded state;

[0036] Figure 6 is an axial view of the present invention from the front left side in the deployed state;

[0037] Figure 7 is a simplified schematic view of a weight-reduced version of the present invention;

[0038] Figure 8 is a simplified schematic view of a quick response version of the present invention;

[0039] Figure 9 is an axial view of the present invention in the stowed state (without the outer skin of the main frame and the folding fence);

[0040] Figure 10 is a front view of the present invention in the stowed state;

[0041] Figure 11 is a right axial view of the present invention in the stowed state;

[0042] Figure 12 is a left axial view of the present invention in the stowed state;

[0043] Figure 13 is a front view of the present invention in the intermediate process of stowing and deploying (without part of the folding fence);

[0044] Figure 14 is a front view of the first step of stowing, intermediate process and deploying;

[0045] Figure 15 is a front view of the fourth step of stowing, intermediate process and deploying;

[0046] Figure 16 is an axial view of the right front upper folding fence 41 when deployed;

[0047] Figure 17 is a rotated front view of the right front upper folding fence 41 when fully stowed;

[0048] Figure 18 is a rotated front view of the right front upper folding fence 41 when fully stowed without the structure of the outer frame 55 of the folding fence;

[0049] Figure 19 is a partial view of the axial view of the left rear upper folding fence 37 when deployed (without the outer frame 55 of the folding fence);

[0050] Figure 20 is a partial view of the rotated front view of the left rear upper folding fence 37 when stowed (without the outer frame 55 of the folding fence and the folding fence short crossbars 56 and the folding fence long uprights 58 of the 1st, 3rd and 4th levels);

[0051] Figure 21is a schematic view of the structure of the groove block 47-49 and the installation of the dismountable handrail 43;

[0052] Figure 22 is a partial schematic view of the middle plate upper flap 46 in the stowed state;

[0053] Figure 23 is a partial schematic view of the middle plate upper flap 46 in the deployed state;

[0054] Figure 24 is Figure 22 a partial enlarged view of the middle A;

[0055] Figure 25 is Figure 23 a partial enlarged view of the middle B;

[0056] Figure 26 is a front view of the present application installed on the rear wall of the rear expansion cabin of the mobile shelter and in the deployed state;

[0057] Figure 27 is an axial side view of the present application installed on the rear wall of the rear expansion cabin of the mobile shelter and in the deployed state;

[0058] Figure 28 is a front view of the present application installed on the rear wall of the rear expansion cabin of the mobile shelter and in the stowed state;

[0059] Figure 29 is a schematic view of the present application installed on the rear wall of the rear expansion cabin of the mobile shelter and in the process of deployment / stowage;

[0060] Figure 30 is a front view of the fully deployed state of the preferred scheme 1;

[0061] Figure 31 is an axial side view of the fully deployed state of the preferred scheme 1;

[0062] Figure 32 is a side view of the front wall 5 in the form of a roller shutter door;

[0063] Figure 33 is a side view of the single door 7 in the form of a roller shutter door in the lowered roller shutter door state;

[0064] Figure 34 is a side view of the front wall 5 in the form of a roller shutter door with a tarpaulin curtain single door 7. DETAILED DESCRIPTION

[0065] The present application will be further described below in conjunction with the drawings and examples, and the present application includes but is not limited to the following examples.

[0066] The idea of the present application is to design a foldable and retractable slow walking ladder, which is folded and compressed from the side direction (width) of the ladder, and after folding and compression, the size of the ladder in the up-down direction (height) and the front-back direction (depth) does not change, only the size in the width direction changes (shortens), and the folding efficiency is extremely high. When the ladder is not in use, it can be folded horizontally in a manual or automatic form, and the double-row slow walking ladder with a width of more than 2 meters is folded and compressed to a width of less than 0.4 meters. When in use, the double-row slow walking ladder can be unfolded in a manual or hydraulic drive automatic form.

[0067] The present application can be a carbon steel inner support structure, and the outer skin can be made of color steel plate, stainless steel plate, aluminum-magnesium alloy, etc.; it can also be made of all stainless steel structure or light aluminum-magnesium alloy structure. The handrails can be made of metal materials, or other materials such as plastics. The surface of the steps can be provided with various silica gel, plastic and other anti-slip comfortable materials.

[0068] The present application can be fixed inside the mobile shelter and integrated house, and can be unfolded when needed, or can be semi-fixed at other positions of the mobile shelter and integrated house, and can be hung or connected with the main body when in use.

[0069] The present application can be used as a separate structure, or can be combined and used in a mobile shelter and integrated house.

[0070] The present application provides a transversely folded integrated slow walking ladder 3, which is unfolded as shown in Figures 1-3 , and includes three main frames, left plate 24, middle plate 25 and right plate 26, which divide the present application into two equal-width left and right channels. There are a total of 7 steps, and the distance between each step is equal. Each step can be folded and connected by a hinge. First, step up from the left channel, then turn to the right channel to continue stepping up, and after reaching the seventh step, turn right to enter the desired position.

[0071] The unfolded state of the present application is shown in Figures 4-6 , and each step left and right tread is connected by a hinge and can be folded or stretched following the change of the distance between the main frames. The left and right treads of the steps are connected by a hinge with the three main frames (left plate 24, middle plate 25 and right plate 26), and can be folded or stretched following the change of the distance between the main frames. The upper turning plate 46 of the middle plate is connected by a hinge with the middle plate 25, and can be folded and locked in place when in use.

[0072] The folding table 36 is a preferred scheme and can be added in the transversely folded integrated slow walking ladder as needed. The folding table 36 is a horizontal plane after unfolding, and is completely embedded in the main frame (left plate 24, middle plate 25 or right plate 26) after folding and storing, and the table top of the folding table 36 is flush with the outer side of the main frame. The folding table 36 is convenient to unfold and store, and is flexible to use.

[0073] The left panel downward-folding angled handrail 27, the left panel downward-folding flat handrail 28, the middle panel downward-folding angled handrail 29, the upper middle panel downward-folding flat handrail 31, and the right panel downward-folding flat handrail 32 are hinged to the three main frames (left panel 24, middle panel 25, and right panel 26). When the horizontally folding integrated staircase is unfolded, it folds down to a horizontal position for use; when the horizontally folding integrated staircase is folded up, it folds upward, close to the outer side of the main frame (left panel 24, middle panel 25, or right panel 26), and is fixed, saving space and achieving folding. The middle panel right angled handrail 30 and the right panel curved handrail 33 are welded to the main frame (left panel 24, middle panel 25, or right panel 26) and remain unchanged when unfolded. When the horizontally folding integrated staircase is unfolded, handrails 27-33 and the detachable handrails 43 on the five folding railings together form a double-sided full-length handrail.

[0074] The left panel 24, the middle panel 25, the right panel 26, the middle panel flip-up panel 46, and the left rear upper folding railing 37, the right rear upper folding railing 39, and the right front upper folding railing 41 together form the full-length guardrail of the horizontally folding integrated staircase.

[0075] When the horizontally folding integrated staircase is unfolded, the space under steps 8-23 is enclosed by the left rear lower folding railing 38, right rear lower folding railing 40, right front lower folding railing 42, and the main frame (left panel 24, middle panel 25, and right panel 26) to prevent children from accidentally entering and playing unsafely. The space under the steps can also be utilized; temporary items can be stored there when the ladder is unfolded. The connection between one side of the left rear lower folding railing 38, right rear lower folding railing 40, and right front lower folding railing 42 and the main frame is designed as a flexible joint, rather than being fixed by welding.

[0076] The structure of this invention can be simplified according to usage. To reduce weight, the folding railings 37-42 can be eliminated, while retaining five detachable handrails 43, and the number of detachable handrails 43 can be appropriately increased, such as... Figure 7 As shown; for easy and quick deployment, the folding railings 37-42 can be retained, and the five detachable handrails 43 can be removed, as detaching the handrails 43 requires a ladder to unfold before reinstallation; for situations requiring rapid response and simplified structure, even a frame-type ladder can be used, along with some folding railings 37, 39, and 41, as shown. Figure 8 As shown.

[0077] The retracted state of this invention is as follows Figure 9 As shown, in order to see the internal structure clearly, Figure 9 The outer skin of the left panel 24, middle panel 25, right panel 26, and the flip-up panel 46 on the middle panel were removed, as were the folding railing structures 37-42. All seven steps were folded, and the handrails (27-29, 31, 32) were folded up and rested against the outer skin of the main frame. The folding table 36 was folded into the left panel 24. At this point, the total width of the entire ladder was no more than 0.4 meters.

[0078] As shown in Figures 10-12 , when folding, the handrails 27-29, 31, 32 are turned up, the middle plate upper turning plate 46 is turned down, each step left and right pedal is folded, the folding fence 37-42 is folded and contracted, driving the left plate 24, the middle plate 25 and the right plate 26 to approach each other, and finally reaching the stowed state.

[0079] The intermediate process of folding and unfolding of the present application is shown in Figure 13 , in order to clearly see the structure, Figure 13 , the left rear lower folding fence 38, the right rear upper folding fence 39 and the right rear lower folding fence 40 are cancelled, the left rear upper folding fence 37, the right front upper folding fence 41 and the right front lower folding fence 42 are retained, the handrails 27-29, 31, 32 are all in the down-turned state and not stowed, and the dismounting handrails 43 are not installed because they are not fully unfolded.

[0080] As can be seen, the present application adopts folding and compression from the side direction (width) of the ladder, and after folding and compression, the size of the ladder in the up-down direction (height) and the front-rear direction (depth) does not change, only the size in the width direction changes (shortens). In order to support this folding and compression method, special designs are made for the steps, fences and handrails.

[0081] The structure of the steps is related to the two different positions where they are placed. The first kind is the first, second, third, fourth and sixth steps (serial numbers 8-13, 18-23), and the root of the fourth step left pedal 14, the fourth step right pedal 17 and the seventh step left pedal 22 is directly connected to the left plate 24 / right plate 26 and the middle plate 25, which needs to consider the interference during the folding process; the second kind is between the fourth step left middle pedal 15 and the fourth step right middle pedal 16, and between the seventh step right pedal 23 and the right plate 26, which needs to consider that after unfolding, the pedal surface cannot be protruding, and the dismounting middle joint plate 34 and the dismounting cover plate 35 need to be placed thereon to fill the gap between them. Therefore, the hinge structures used at the roots of steps in different positions are different, while ensuring that the steps have the same length after unfolding and the same relative length after folding, which can realize the synchronous folding of all steps during folding and the final folding length. The structure of the first kind is shown in Figure 14 , and the structure of the second kind is shown in Figure 15 .

[0082] There are two different hinges between the steps 8-23 and the main frame. The first step left tread 8, the first step right tread 9, the second step left tread 10, the second step right tread 11, the third step left tread 12, the third step left tread 13, the fourth step left tread 14, the fourth step right tread 17, the fifth step left tread 18, the fifth step right tread 19, the sixth step left tread 20, the sixth step right tread 21, the seventh step left tread 22 use hinge 52 between the main frame. The fourth step left middle tread 15, the fourth step right middle tread 16, the seventh step right tread 23 use hinge 53 between the main frame. When the ladder is unfolded, a dismounting middle joint plate 34 needs to be placed between the fourth step left middle tread 15 and the fourth step right middle tread 16; a dismounting joint cover plate 35 also needs to be placed at the joint between the ladder and the passage to be reached (the seventh step right tread 23 is close to the right frame 26 end). Therefore, the fourth step left middle tread 15, the fourth step right middle tread 16, the seventh step right tread 23 use another hinge 53 between the main frame. The left tread 8, 10, 12, 14, 16, 18, 20, 22 and the right tread 9, 11, 13, 15, 17, 19, 21, 23 of each step use the same hinge 54.

[0083] Taking the first step and the fourth step as examples, from Figure 14 、 15 It can be seen that, for different positions of the steps, the hinge 52 and the hinge 54 structure used can make the height difference between the steps using the hinge 52 at both ends (the first, second, third, fifth, and sixth steps) and the steps using the hinge 52 at one end and the hinge 53 at the other end (the fourth and seventh steps) the same, all horizontal after unfolding, and the same folding compression size after folding.

[0084] As Figure 15 the fourth step left tread 14 (hinge 52) and the fourth step left middle tread 15 (hinge 53) in the fourth step, can meet the requirements of unfolding and folding, and the state of the hinge 53 after unfolding shows that the highest point of the hinge 53 is a flat surface, and the flat surface is lower than the step surface, so that the dismounting middle joint plate 34 can be placed between the fourth step left middle tread 15 (hinge 53) and the fourth step right middle tread 16 (hinge 53) after unfolding, so that the entire fourth step surface 14-17 is a horizontal surface after unfolding.

[0085] The design of the folding fence 37-42 can meet two requirements. One is to achieve high folding compression, and the size remains unchanged in height and depth before and after folding compression, only the width changes. The other is that the folding fence can form a horizontal straight fence after unfolding, which can meet the horizontal straight fence of adult height and child height, can play the role of handrail, and form a grid fence at the lower half height to prevent children from falling out; there is also a grid fence at the waist height of adults, which can temporarily provide support for the weak population (this invention focuses on the use needs of blood donors and the old, weak and disabled population).

[0086] Take the right front upper folding fence 41 as an example, Figure 16 is the axial side view of the right front upper folding fence 41 when unfolded, Figure 17 is the rotating front view of the right front upper folding fence 41 when completely folded. It is convenient to see the structure, Figure 18 is the rotating front view of the right front upper folding fence 41 when completely folded on the basis of Figure 17 , the folding fence outer frame 55 structure is cancelled. The folding fence 37-42 needs to be folded when the structure is folded, so there are special structures of folding fence short upright 57 and folding fence long upright 58. A part of the material needs to be cut off in the middle of the short upright 57 and the folding fence long upright 58 in order to fold high. Similarly, in order to achieve high folding, many places need to add gaskets, and cannot use round gaskets 59-61, but need to use half-round gaskets 62-64 and thin long gaskets 65. After adopting such structure, high folding can be achieved, which meets the high folding state of the horizontal folding integrated slow walking ladder in the folded state.

[0087] During the process of folding fence 37-42 from unfolding to folding state, the upper folding fence short horizontal rod 56 is connected to the folding fence short upright 57 by rivets, and the folding fence short upright 57 drives the folding fence short horizontal rod 56 connected thereto to fold synchronously. The lower folding fence short horizontal rod 56 is connected to the folding fence long upright 58 by rivets, and the folding fence long upright 58 drives the folding fence short horizontal rod 56 connected thereto to fold synchronously. During the process of unfolding to folding state, the folding fence short upright 57 moves downward, and the folding fence long upright 58 moves upward, so that after folding, the folding fence short horizontal rod 56, the folding fence short upright 57 and the folding fence long upright 58 are all within the length range of the folding fence outer frame 55.

[0088] The folding fence 37-42 adopts a special structure, which is a square small grid after unfolding. The protective requirements considered cannot be met by the conventional diamond folding mode. After unfolding, the square small grid mainly exists in the middle and lower part and the upper part of the folding fence 37-42. The middle and upper part is left empty for folding, the middle and lower part is used to shield the legs of adult pedestrians, and the upper part shields the chest of adult pedestrians and is convenient for hand holding. For adults with minors, the middle and lower part is all square small grid, which can also provide good protection for minors. The folding fence outer frame 55, the folding fence short horizontal rod 56, the folding fence short vertical rod 57 and the folding fence long vertical rod 58 have the same width. The folding fence short horizontal rods 56 of the upper and lower layers do not overlap in the up-down direction, and when they are tightened, the folding fence short horizontal rods 56 in the left-right direction can be tightly attached together. The folding fence short vertical rod 57 and the folding fence long vertical rod 58 are not in the same plane as the folding fence short horizontal rod 56 and do not interfere with each other. When the folding fence is completely retracted, the folding fence short vertical rod 57 / folding fence long vertical rod 58 is spaced apart from the hinge shaft 70 at the hinge joint of the rod in the left-right direction (a short flat groove is opened), a long flat groove is processed on one side of the folding fence short vertical rod 57 / folding fence long vertical rod 58, and after retraction, it does not interfere with other parts. As mentioned in the implementation case, the hinge shaft diameter of the horizontal rod and the vertical rod is 4mm, a short flat groove is opened, the width of the folding fence short horizontal rod 56 is 13mm, and the length is 138mm. In addition to the folding fence outer frame 55 on both sides, there are four folding fence short vertical rods 57 / folding fence long vertical rods 58 in the middle, so the total length is 13x6+4x5=98mm when retracted. The maximum total length is (138-13)x10+13=1263mm when unfolded. The ratio of the longest length to the shortest length is 12.8, which has a very high stretching ratio.

[0089] In Figure 19 It can be seen from the above half part that in the folding fence outer frame 55, the folding fence short horizontal rod 56 and the folding fence short vertical rod 57 have four layers in total, the first layer and the fourth layer are the folding fence short horizontal rod 56, and the second and third layers are the folding fence short horizontal rod 56 and the folding fence short vertical rod 57. In the folding fence outer frame 55, except for the positions of the folding fence short horizontal rod 56 and the folding fence short vertical rod 57, other positions are filled with spacers 59-65 and fixed in the front-back direction to the positions of the folding fence short horizontal rod 56 and the folding fence short vertical rod 57.

[0090] In Figure 20In the middle, the folding fence outer frame 55 is removed, and the folding fence short horizontal rods 56 and the folding fence long vertical rods 58 of the 1st, 3rd and 4th layers are removed. It can be clearly seen that if the short flat grooves are not opened on the folding fence long vertical rods 58, the folding fence short horizontal rods 56 and the folding fence long vertical rods 58 at the same layer will interfere in the folded state. After the short flat grooves are designed on the folding fence long vertical rods 58, the adjacent folding fence short horizontal rods 56 and the folding fence long vertical rods 58 at the same layer are tightly attached in the folded state, and the height expansion ratio of the folding fence 37-42 in the present application can be achieved.

[0091] The left groove block 47, the middle groove block 48 and the right groove block 49 of the present application are fixed on the main frame. Above the fourth step of the ladder, the groove blocks 47-49 are fixed on the front side of the main frame of the left rear upper folding fence 37 and the right rear upper folding fence 39, as shown in Figure 21 . Figure 21 In the middle, the left groove block 47 is fixed on the inner side of the left plate, the middle groove block 48 is fixed on the front side of the column of the rear of the middle plate 25, and the right groove block 49 is fixed on the inner side of the right plate 26. There are two positions above and below. The groove blocks 47 and 49 are fixed on the main frame inside the right front upper folding fence 41, the groove block 47 is fixed on the right side of the middle plate 25, the groove block 49 is fixed on the left side of the right plate 26, and a dismountable handrail 43 is inserted in the middle.

[0092] The groove blocks 47-49 are grooved in the middle for placing the square section pipe segments at both ends of the dismountable handrail 43. The both ends of the dismountable handrail 43 are square section pipe segments, and the middle is the shape of the handrail (not limited to the rectangular section pipe segment of the present application). When the square section pipe segments at both ends of the dismountable handrail 43 are placed in the grooves in the middle of the groove blocks 47-49, the top surface of the rectangular section pipe segment as the handrail in the middle is flush with the top surface of the groove blocks 47-49. At this time, the groove block tongue 51 is pushed, the dismountable handrail 43 is pressed, and then the groove block screw 50 is tightened to fix the groove block tongue 51, so that the dismountable handrail 43 is fixed and can be safely used. When the ladder needs to be folded, the groove block screw 50 is loosened, the groove block tongue 51 is pushed away, and the dismountable handrail 43 is taken out.

[0093] As shown in Figures 22-25 , the middle plate upper turning plate 46 is above the middle plate 25 and is connected by a hinge. When folded, the middle plate upper turning plate 46 is turned down tightly against the middle plate 25 through the hinge, and when unfolded, the middle plate upper turning plate 46 is turned up to be vertical, and then is fixed on the middle plate 25 through two plugs 66 on the front and back sides. The plug 66 is designed with a self-locking structure, and in the folded and unfolded states, the plug rod 68 of the plug 66 will not come out of the plug sleeve 67, which is safe and reliable. In the specific implementation, one plug sleeve 67 is first positioned and welded on the middle plate upper turning plate 46, and then the other plug sleeve 67 is welded after the plug rod 68 is installed.

[0094] The unfolding steps of the transversely folded integrated slow climbing ladder in the folded state:

[0095] 1) Open the fixed between the left plate 24 and the right plate 26 (such as hook structure, etc.);

[0096] 2) If the left plate 24 is fixed end, then the right plate 26 and the middle plate 25 are free end, pull out the middle plate 25 and the right plate 26;

[0097] 3) Each step 8-23, folding fence 37-42 with the unfolding of the middle plate 25 and the right plate 26 synchronous unfolding, unfolding in place, the pedal will be flat on the square tube below the pedal;

[0098] 4) Turn up the middle plate 46 up, and fix it on the middle plate 26 with the two side bolts 66;

[0099] 5) Turn down the folding handrail 27-29, 31, 32 to the right place, and fix it automatically by magnetic attraction;

[0100] 6) Put the disassembled middle joint plate 34 in the groove between the left middle step 15 and the right middle step 16 of the fourth step, and pad it flat;

[0101] 7) Put the disassembled cover plate 35 near the right plate 26 of the seventh step right pedal 23, which is used to block the gap between the seventh step right pedal 23 and the channel to be connected with the ladder;

[0102] 8) Install the disassembled handrail 43. Loosen the slot block screw 50, push the slot block tongue 51 away, put the disassembled handrail 43 in, push the slot block tongue 51 to press the disassembled handrail 43, and then tighten the slot block screw 50. Complete the unfolding of the transverse folding integrated slow ladder.

[0103] The steps of folding the transverse folding integrated slow ladder in the unfolded state:

[0104] 1) Turn up the handrail 27-29, 31, 32 and fix it;

[0105] 2) Pull out the bolt 66, put down the middle plate 46, and put it on the left side of the middle plate 25;

[0106] 3) Remove the disassembled middle joint plate 34 and the disassembled cover plate 35;

[0107] 4) Loosen the slot block screw 50, push the slot block tongue 51 away, take out the disassembled handrail 43, and then tighten the slot block screw 50;

[0108] 5) If the left plate 24 is fixed end, then the right plate 26 and the middle plate 25 are free end, push the middle plate 25 and the right plate 26 to the left plate 24;

[0109] 6) Each step 8-23, folding fence 37-42 with the folding of the middle plate 25 and the right plate 26 synchronous folding;

[0110] 7) After the right panel 26 and the middle panel 25 are folded into place, fix the left panel 24 and the right panel 26 together (e.g., with a hook structure). This completes the folding of the horizontally folding integrated staircase.

[0111] The first implementation example Figures 16-34 As shown. The main frame is made of all-steel structure with a 1.5mm thick galvanized sheet outer skin. The dimensions of the left plate 24, middle plate 25, and right plate 26 are 2260x43x2000mm (length x width x height). The first, second, third, fifth, and sixth steps are 280mm wide, the fourth step is 780mm wide, and the seventh step is 800mm wide. The height difference between each step is 175mm. A rubber mat is laid on the surface of the steel treads to increase comfort and slip resistance. The same rubber mat is laid on the surface of the disassembled center seam plate 34 and the disassembled overlapping plate 35, and they are flush with the other steps after placement.

[0112] The height difference between the upper surface of the step tread and the handrail is 850-900mm. Handrails 27-32 are cylindrical, 38mm in diameter, and made of lightweight hollow aluminum alloy. The hinges of handrails 27-29, 31, and 32 are magnetic. When handrails 27-29, 31, and 32 are folded down, the hinged parts on the handrails contact the fixed hinged parts on the main frame. The contact surfaces are magnetic, which secures the folded handrails 27-29, 31, and 32 in place, preventing them from folding upwards and rotating, thus preventing hand pinching and improving safety. Handrails 27-29, 31, and 32 are secured with straps after being folded up for easy folding.

[0113] The distances between the left panel 24 and the middle panel 25, and between the right panel 26 and the middle panel 25, are both 1108mm, which is the actual usable passageway space. Excluding the space occupied by the handrails on both sides of the passageway, the distance between the handrails is 960mm. The length of the seven steps and the unfolded length of the folding railings 37-42 are also approximately 1108mm (with slight variations depending on structural differences).

[0114] In the folded state, the distance between the left panel 24 and the middle panel 25, and the distance between the right panel 26 and the middle panel 25, are both 100mm. Therefore, the distance from the outer edge of the left panel to the outer edge of the right panel in the folded state is 329mm. The minimum design length of the seven steps and the folding railing 37-42 in the folded state is all within 100mm.

[0115] The upper flip-up panel 46 is 590mm high, with a length consistent with the actual length of the lower middle panel 25, and a width of 43mm, the same as the middle panel 25. When the upper flip-up panel 46 is folded down, it is located on the left side of the middle panel, above the lower left fold-down handrail 29. When unfolded, the total height of the middle panel 25 plus the upper flip-up panel 46 is 2550mm. The height difference between the top surface of the upper flip-up panel 46 and the top surface of the left footboard 22 of the seventh step is 1320mm, which meets the height requirement for protection.

[0116] When unfolded, the height difference 1290mm between the top surface of the folding rail short crossbar 56 of the left rear upper folding rail 37 and the top surface of the fourth step 17 meets the protection requirement. In addition, the detachable handrails 43 are installed inside the left rear upper folding rail 37 and the right rear upper folding rail 39.

[0117] The lengths of the folding rails 37-42 are different, and the structures are slightly different due to the different lengths. The folding rail outer frame 55 has a width of 13mm and a thickness of 32mm. The middle part is slotted at the position of the folding rail short crossbar 56 when folded. The middle hollow slot has a width of 22mm, and the slot outside the single-sided wall has a thickness of 5mm. The folding rail short crossbar 56 has a thickness of 5mm, a width of 13mm, and a length of 126mm. The folding rail upright 57, 58 has a width of 13mm (with a removed part in the middle to prevent interference after folding) and a thickness of 5mm. A circular boss with a diameter of 13mm is arranged at the intersection with the folding rail short crossbar 56, and the two sides of the boss are each 1mm high. In this way, there is a 1mm gap between the folding rail upright 57, 58 and the folding rail short crossbar 56 when folded, which does not affect the realization of flexible folding function. The folding rail short crossbar 56 and the folding rail upright 57, 58 are riveted through a rivet with a diameter of 5mm. The middle hollow slot of the folding rail outer frame 55 has a width of 22mm, and there are three folding rail short crossbars 56 and one folding rail upright 57 or 58 in the middle hollow slot, with a total thickness of 22mm. The middle hollow slot of the folding rail outer frame 55 has a width of 22mm, but only one folding rail short crossbar 56 and one folding rail upright 57 or 58 exist in the middle, and the remaining space needs to be filled with a gasket. The gasket is made of brass material, which is convenient for supporting and rotating friction. Because of the different spatial positions of the folding rail short crossbar 56 and the folding rail upright 57 or 58, there is a need for three different thicknesses of the same gasket, which are 5mm, 10mm and 17mm. Because of the different positions and interference conditions, there are three shapes of gaskets, namely cylindrical, semicircular and long strip. When the folding rails 37-42 are installed on the transversely folded integrated slow walking ladder, only the two outermost folding rail outer frames 55 are fixed on the two sides of the main frame, and the middle part is suspended. The gasket fills the excess space in the middle hollow slot of the folding rail outer frame 55, and the unfolded folding rail does not shake back and forth, which is more safe and reliable.

[0118] The whole folding fence 37-42 is composed of six folding fence outer frames 55 and its inner several folding fence short horizontal rods 56, folding fence short vertical rods 57 and folding fence long vertical rods 58. The width of the fully unfolded folding fence 37-42 is 1263mm (about the length of ten folding fence short horizontal rods 56), and the width of the fully folded folding fence 37-42 is 98mm (the space between every two folding fence outer frames 55 is 4mm when the folding fence short horizontal rods 56 and the folding fence vertical rods 57 or 58 are fully folded and do not interfere with each other). The folding fence 37-42 is designed to be folded in height, which fully meets the requirements of folding the horizontal folding integrated slow walking ladder.

[0119] The left groove block 47 and the right groove block 49 are symmetrical structures, respectively fixed on the two end main frame walls of the detachable handrail 43. The middle groove block 48 is fixed on the independent square steel tube at the back of the middle plate 25. The left groove block 47 and the right groove block 49 are shrunk into a whole middle groove block 48 at this position in order to save space without affecting the function. The left and right groove blocks are 70mm high, 43mm wide in front and back, 45mm long, and the inner groove is 40mm long for inserting the square square tube at the two ends of the detachable handrail 43. The length of the middle groove block 48 is 85mm, and the length of the inner groove on both sides is 40mm, with the same height and width as the left and right groove blocks. The detachable handrail 43 is made of light aluminum alloy, with a total length of 1134mm, square square tubes at both ends with a length of 40mm and a cross section of 25x25mm, and a rectangular tube in the middle with a length of 1054 and a cross section of 60x25mm.

[0120] The exit at the front upper right of the right plate 26 corresponds to the seventh step right pedal 23, and the net width of the exit is 757mm, which can pass through a single person.

[0121] The second embodiment is integrated on the rear wall of the rear expansion cabin of the mobile shelter.

[0122] The transversely folding integrated slow walking ladder 3 provided by the present application is installed on the rear wall 6 of the rear expansion cabin 2 of the mobile shelter 1. The transversely folding integrated slow walking ladder 3 and the rear wall 6 of the rear expansion cabin 2 are connected by a pair of pressure push rod devices 4. The use of the pressure push rod device 4 can realize the up and down movement function of the transversely folding integrated slow walking ladder 3 on the rear wall 6 of the rear expansion cabin 2.

[0123] In the unfolded state of the lateral folding integrated slow walking ladder 3, one can easily walk from the ground to the rear door of the mobile shelter 1 through the lateral folding ladder 3, and then enter the mobile shelter 1. The rear door of the mobile shelter 1 is the front wall 5 of the rear expansion cabin 2. The front wall 5 of the rear expansion cabin 2 is provided with a single door 7. When the lateral folding integrated slow walking ladder 3 is unfolded and used, the single door 7 on the front wall 5 of the rear expansion cabin 2 is opened, and the access from the inside of the mobile shelter 1 to the outside is opened (mobile shelter 1→single door 7→a new type of lateral folding ladder 3→the ground outside). After the single door 7 is closed, the mobile shelter 1 is self-contained.

[0124] During the movement, the rear expansion cabin 2 is folded in the rear of the mobile shelter 1. The lateral folding integrated slow walking ladder 3 in the folded state is fixed on the rear wall 6 of the rear expansion cabin 2 by the pressure push rod device 4, and is folded in the mobile shelter 1. At this time, the lateral folding integrated slow walking ladder 3 in the folded state is only less than 400mm thick, and only occupies a small space in the mobile shelter 1.

[0125] The whole mobile shelter 1 integrated with the lateral folding integrated slow walking ladder 3 from the overall folded state to the completely unfolded state of the lateral folding integrated slow walking ladder 3:

[0126] 1) unfold the rear expansion cabin 2 in the mobile shelter 1;

[0127] 2) lower the lateral folding integrated slow walking ladder 3 by the pressure push rod device 4;

[0128] 3) release the self-locking state of the folded integrated slow walking ladder 3;

[0129] 4) unfold the lateral folding integrated slow walking ladder 3 laterally, and connect the lateral folding integrated slow walking ladder 3 with the mobile shelter 1;

[0130] 5) put down the folded handrails, and put the jointing plates, detachable handrails, etc. in place, and then it can be safely used.

[0131] The whole mobile shelter 1 integrated with the lateral folding integrated slow walking ladder 3 from the completely unfolded state of the lateral folding integrated slow walking ladder 3 to the overall folded state:

[0132] 1) fold the folded handrails, and fix them in place, and remove the jointing plates, detachable handrails, etc. and fold them in place;

[0133] 2) release the connection between the lateral folding integrated slow walking ladder 3 and the mobile shelter 1;

[0134] 3) fold the lateral folding integrated slow walking ladder 3, and push it to the end of the rear wall 6 of the rear expansion cabin 2;

[0135] 4) fix the folded integrated slow walking ladder 3 in the folded state (self-locking);

[0136] 5) Raise the transversely folded integrated slow pace ladder 3 into place by the pressure push rod device 4;

[0137] 6) Retract the rear expansion cabin 2 into the mobile shelter 1.

[0138] The use of the transversely folded integrated slow pace ladder 3 is not limited to being integrated on the mobile shelter, and can be integrated in a semi-mobile shelter, or in a fixed shelter, etc. If it needs to be used for lifting, a pressure push rod or an electric guide rail can be selected for installation; if it does not need to be used for lifting, it can be directly integrated in various shelters or houses, or a universal wheel can be installed for use as a movable transversely folded integrated slow pace ladder 3.

[0139] If it needs to be used for lifting, it is not limited to selecting a pressure push rod or an electric guide rail, and other electric or hydraulic drive methods can also be used to complete the lifting of the transversely folded integrated slow pace ladder 3.

[0140] It is not limited to the structure of the rear wall 5 of the rear expansion cabin 2 being provided with a single door 7, and in order to meet the space utilization requirements in the mobile shelter 1, the fixed front wall 5 and the single door 7 can be replaced with a roller shutter door. The front wall 5 with a single door 7 size door hole is replaced with a roller shutter door, and the single door 7 is also replaced with a roller shutter door, or replaced with a waterproof cloth curtain. In this way, when the rear expansion cabin 2 is in the retracted state, the front wall 5 and the single door 7 only occupy a small part of the upper space in the mobile shelter 1, and in the expanded state, the transversely folded integrated slow pace ladder 3, the roller shutter door form front wall 5 and the roller shutter door form single door 7 can be retracted first, and then the rear expansion cabin 2 can be retracted into the mobile shelter 1, so that even if many items are placed inside the mobile shelter 1, it will not affect the retraction of the rear expansion cabin 2, greatly improving the space utilization rate of the mobile shelter 1.

[0141] The preferred scheme 1 of the transversely folded integrated slow pace ladder 3 integrated on the rear wall of the rear expansion cabin of the mobile shelter replaces the front wall 5 of the rear expansion cabin 2 with a roller shutter door form front wall 5, and replaces the single door 7 with a roller shutter door form single door 7. The optimization scheme 1 is particularly suitable for the case where the mobile shelter 1 needs to be separated from the outside world as a closed space after the transversely folded integrated slow pace ladder 3 is expanded.

[0142] In the fully expanded state, the roller shutter door form front wall 5 has lowered the roller shutter door, and the roller shutter door of the roller shutter door form single door 7 has not been lowered, at which time the rear end face of the mobile shelter 1 is the lowered roller shutter door of the roller shutter door form front wall 5, in a state of leaving a door hole passage. Personnel can use the transversely folded integrated slow pace ladder 3 to go in and out of the mobile shelter 1. If necessary, the roller shutter door of the roller shutter door form single door 7 can be lowered, so that the interior of the mobile shelter 1 and the transversely folded integrated slow pace ladder 3 are separated, and the interior of the mobile shelter 1 is not a closed space.

[0143] The first step of folding up, the transversely folding integrated slow ladder 3 is folded up, at this time the shutter door of the shutter door form front wall 5 is not folded up.

[0144] The second step of folding up, the transversely folding integrated slow ladder 3 has been lifted into place by the pressure push rod device 4. The shutter door of the shutter door form front wall 5 and the shutter door of the shutter door form single door 7 have been retracted. The space below the shutter door form front wall 5 and the shutter door form single door 7 is empty, without any physical object. The rear expansion cabin 2 is ready to be retracted. At this time, the front wall 5 of the rear expansion cabin 2 is only in the upper part of the space occupied by the shutter door 5 and 7, even if there are objects placed in the rear half of the cabin body of the mobile shelter 1 at this time, it will not affect the implementation process of retracting the rear expansion cabin 2 together with the transversely folding integrated slow ladder 3.

[0145] In the completely folded up state of the mobile shelter 1, the rear part of the rear expansion cabin 2 only occupies about 400mm deep space up and down, and a small part of the upper space of the rear half of the mobile shelter 1. The utilization rate of the entire internal space of the mobile shelter 1 is greatly improved.

[0146] Figure 32 And Figure 33 are respectively the state of the shutter door of the shutter door form front wall 5 and the shutter door of the shutter door form single door 7 being lowered. Figure 34 In the state, the shutter door form front wall 5 has the same function as the front wall 5 of the fixed wall, and can be used as the cabin wall of the mobile shelter 1 in its unfolded state. The shutter door form front wall 5 can be used as the rear cabin wall of the mobile shelter 1 after it is unfolded as a whole, or as a partition wall inside the mobile shelter 1 after it is folded up as a whole, and can become a closed wall surface in cooperation with the shutter door form single door 7.

[0147] The preferred scheme 2 of the transversely folding integrated slow ladder 3 integrated on the rear wall of the rear expansion cabin of the mobile shelter is to change the front wall 5 of the rear expansion cabin 2 into the shutter door form front wall 5, and the single door 7 into the tarpaulin curtain structure. The tarpaulin curtain single door 7 and the shutter door form front wall 5 are an integral structure, and the tarpaulin curtain single door 7 is lowered together with the shutter door when the shutter door is lowered. The tarpaulin curtain single door 7 can be opened in the form of being separately lifted or separately rolled up. When the tarpaulin curtain single door 7 is opened, it forms a passageway from the mobile shelter 1 to the transversely folding integrated slow ladder 3; when the tarpaulin curtain single door 7 is lowered, it can only block the sound, sight and light from the outside to a certain extent. When it is necessary to fold up, the tarpaulin curtain single door 7 is folded up together with the shutter door of the shutter door form front wall 5. The shutter door form front wall 5 with the tarpaulin curtain single door 7 is as shown in Figure 34 .

[0148] The entire mobile shelter structure is similar to the optimized solution 1 structure. It is particularly suitable for situations where the mobile shelter 1 interior does not need to be a fully enclosed space after the lateral folding integrated ramp 3 is deployed. The preferred solution 2 has the same effect as the preferred solution 1 in terms of improved space utilization in the entire mobile shelter 1 interior.

Claims

1. A transversely folded integrated ramp, comprising three parallel vertical plates of left, middle and right, and a step plate installed between two vertical plates, characterized in that, The step ladder is divided into two parts, and the middle part is connected by a hinge to be foldable, and the two ends are hinged to the adjacent two vertical plates to form a step ladder.

2. The transversely folding integrated bench step, according to claim 1, wherein, The upper edge of the middle vertical plate is hinged to an upper turning plate, which is turned up and locked by a latch when in use.

3. The transversely folding integrated bench step, according to claim 1, wherein, The vertical plate side wall is provided with a groove, and a folding table is hinged to the groove.

4. The transversely folding integrated bench step, according to claim 1, wherein, The vertical plate side wall is hinged to a handrail, which is turned down and away from the vertical plate side wall when in use.

5. The transversely folding integrated bench step, according to claim 1, wherein, Adjacent vertical plates are connected by folding fences or handrails, or both.

6. The transversely folding integrated bench step, according to claim 5, wherein, The folding fence includes an outer frame, a vertical rod and a horizontal rod, one end of the two horizontal rods is hinged to one end of the vertical rod, the other end is hinged to the adjacent outer frame, the other end of the vertical rod is hinged to the other two horizontal rods parallel to the two horizontal rods, and the structure is repeated regularly to form a folding fence.

7. The transversely folding integrated bench step, according to claim 6, wherein, The vertical rod side wall is recessed after cutting to avoid interference with the horizontal rod when folding.

8. The transversely folding integrated bench step, according to claim 5, wherein, The vertical plate side wall is provided with a groove block, the groove block is provided with a groove in the middle, and the two ends of the handrail are installed in the groove of the groove block and fastened by tightening screws.

9. The transversely folding integrated bench step, according to claim 1, wherein, The height and gentleness of the climbing can be changed by increasing or decreasing the number of vertical plates or the number of step ladders between adjacent vertical plates.

Images