Flat car and ladder stand two-in-one device used in machine room

By designing a two-in-one device that combines a flatbed truck and a ladder in the machine room, the problem of poor versatility of traditional tools was solved, enabling flexible tool switching, improving construction efficiency and reducing costs.

CN223952578UActive Publication Date: 2026-02-27CRSC ENG GRP CO LTD
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Patent Information

Application Number
CN202423295961.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2026-02-27
Estimated Expiration
2034-12-30

AI Technical Summary

Technical Problem

Traditional transportation tools and climbing tools cannot be used simultaneously, occupy a lot of transportation space, have low construction efficiency, and are inconvenient to carry, which leads to increased transportation and construction costs and poses a risk of damage to materials and equipment.

Method used

Design a flatbed cart and ladder combination device for computer room. The device can be converted into a flatbed cart or ladder through a folding and pull-out structure. It includes a rotating ladder frame, a fixed ladder frame, a fixed ladder plate, and a pull-out ladder plate. Combined with a four-wheel structure, it can be converted into a flatbed cart or ladder within an angle range of 0-180°.

Benefits of technology

It improves installation efficiency and quality at the construction site, saves time, is easy to carry and transport, reduces transportation and construction costs, and avoids the risk of damage caused by tools occupying space.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of railway construction, and particularly relates to a flat car and ladder stand two-in-one device used in a machine room, which comprises a folding structure comprising a rotating ladder assembly and a fixed ladder assembly, and the rotating ladder assembly is rotatably connected to one side of the fixed ladder assembly; the drawing structure comprises a fixed ladder plate and a drawing ladder plate, the fixed ladder frame is rotatably connected to the other side of the fixed ladder plate, and the drawing ladder plate is slidably connected to the fixed ladder plate; the four groups of wheel structures are detachably connected to the two sides of the fixed ladder plate respectively; the included angle between the rotating ladder assembly and the fixed ladder assembly is 180 degrees, the drawing ladder plate is completely drawn out of the fixed ladder plate, and when the included angle between the fixed ladder assembly and the fixed ladder plate is an acute angle, the folding structure and the drawing structure form the ladder stand; the included angle between the rotating ladder assembly and the fixed ladder assembly is 0 degree, the drawing ladder plate is located in the fixed ladder plate, and when the included angle between the fixed ladder assembly and the fixed ladder plate is a right angle or an obtuse angle, the folding structure and the drawing structure form a flat car. The construction efficiency is obviously improved, and carrying and operation are convenient.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to railway construction technical field especially relates to a flat car and ladder two in one device in machine room. BACKGROUND

[0002] The shortcomings of the traditional transport tools and climbing tools are obvious, mainly manifested in that: the transport tools and climbing tools cannot be considered, the transport space is occupied in the work point transfer, the construction efficiency is low, and the climbing tools are extremely inconvenient to carry and move, which often leads to the increase of transportation cost and construction cost, the volume of the climbing tools is large during the transfer of materials and equipment, the transport space is occupied, the construction efficiency is low, and hidden troubles such as damage of materials and equipment often occur. CONTENT OF THE UTILITY MODEL

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a flat car and ladder two in one device in machine room, which combines the transport tool and the climbing tool, is convenient to carry and transfer, and improves the transportation efficiency and the construction efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The utility model provides a flat car and ladder two in one device in machine room, which includes a folding structure, a rotating ladder frame and a fixed ladder frame, the rotating ladder frame is rotatably connected to one side of the fixed ladder frame, and the included angle between the rotating ladder frame and the fixed ladder frame is 0-180 DEG, a pulling structure, a fixed ladder plate and a pulling ladder plate, the fixed ladder frame is rotatably connected to the other side of the fixed ladder plate, and the pulling ladder plate is slidably connected to the fixed ladder plate, and four groups of wheel structures are respectively detachably connected to both sides of the fixed ladder plate, when the included angle between the rotating ladder frame and the fixed ladder frame is 180 DEG, the pulling ladder plate is completely pulled out of the fixed ladder plate, and the included angle between the fixed ladder frame and the fixed ladder plate is an acute angle, the folding structure and the pulling structure form a ladder, when the included angle between the rotating ladder frame and the fixed ladder frame is 0 DEG, the pulling ladder plate is located in the fixed ladder plate, and the included angle between the fixed ladder frame and the fixed ladder plate is a right angle or an obtuse angle, the folding structure and the pulling structure form a flat car.

[0006] Preferably, the rotating ladder frame and the fixed ladder frame are respectively provided with multiple ladder pipes at equal intervals along the length direction thereof.

[0007] Preferably, the rotating ladder frame is located on the side of the fixed ladder frame towards the fixed ladder plate.

[0008] Preferably, the fixed ladder board and the pull-out ladder board are respectively provided with a plurality of first ladder boards and a plurality of second ladder boards at equal intervals along the length direction of the fixed ladder board and the pull-out ladder board; when the pull-out ladder board is completely pulled out of the fixed ladder board, the plurality of first ladder boards and the plurality of second ladder boards form an angle with the plane of the fixed ladder board; when the pull-out ladder board is located in the fixed ladder board, the plurality of first ladder boards and the plurality of second ladder boards are parallel to the plane of the fixed ladder board.

[0009] Preferably, the plurality of first ladder boards are respectively provided with first pull rods on both sides, and the plurality of second ladder boards are respectively provided with second pull rods on both sides; two first pull rods are located at the same horizontal height, two second pull rods are located at the same horizontal height, the two first pull rods drive the plurality of first ladder boards to rotate simultaneously, and the two second pull rods drive the plurality of second ladder boards to rotate simultaneously.

[0010] Preferably, the plurality of first pull rods are respectively provided with first rotating shafts, and the plurality of second pull rods are respectively provided with second rotating shafts; two first pull rods are respectively connected to the two sides of the first rotating shaft, and the first rotating shaft drives the plurality of first ladder boards to rotate simultaneously, two second pull rods are respectively connected to the two sides of the second rotating shaft, and the second rotating shaft drives the plurality of second ladder boards to rotate simultaneously, so that the plurality of first ladder boards and the plurality of second ladder boards do not interfere with each other when the pull-out ladder board slides into or out of the fixed ladder board.

[0011] Preferably, the distance between two adjacent first rotating shafts is the same as the sum of the width of the first ladder board and the second ladder board.

[0012] Preferably, the fixed ladder frame is provided with a hook or a fixed shaft, and a fixed shaft or a hook is provided on the fixed ladder board, so that when the fixed ladder frame is rotated to form an acute angle with the fixed ladder board, the relative positions of the fixed ladder frame and the fixed ladder board are fixed.

[0013] Preferably, the wheel structure comprises a frame body and three wheel bodies connected to the frame body, the three wheel bodies are arranged in a circular array around the center position of the frame body, and the frame body is rotationally connected to the fixed ladder board.

[0014] Preferably, four shaft bodies are respectively provided on both sides of the fixed ladder board, a groove is formed in the shaft body, a channel is formed in the center position of the frame body along the axis direction of the frame body, the frame body penetrates into the shaft body through the channel, and the channel of the frame body is clamped in the groove.

[0015] The utility model discloses a beneficial effect is: the utility model provides a kind of inside machine room using flat car and ladder two-in-one device, including folding structure, pull structure and four groups of tire structure, wherein folding structure includes rotating ladder frame and fixed ladder frame, rotating ladder frame can be rotatably connected in fixed ladder frame one side, the included angle between rotating ladder frame and fixed ladder frame is between 0-180 °, when the included angle of both is 0 degree, folding structure is as the pull rod part of flat car, when the included angle of both is 180 degrees, folding structure is as a supporting leg of ladder;Pull structure includes fixed ladder plate and pull ladder plate, fixed ladder frame rotatably connects fixed ladder plate other side, pull ladder plate is slidably connected in fixed ladder plate, when pull ladder plate slides into fixed ladder plate, two form the bottom plate part of flat car, when pull ladder plate slides out of fixed ladder plate, two form another supporting leg of ladder;Four groups of wheel structure are detachably connected in fixed ladder plate both sides, when wheel structure is mounted, as the wheel of flat car, when disassembled, can be used as ladder;When the included angle between rotating ladder frame and fixed ladder frame is 180 °, pull ladder plate is completely pulled out of fixed ladder plate, and the included angle between fixed ladder frame and fixed ladder plate is acute angle, folding structure and pull structure form ladder;When the included angle between rotating ladder frame and fixed ladder frame is 0 °, pull ladder plate is in fixed ladder plate, and the included angle between fixed ladder frame and fixed ladder plate is right angle or obtuse angle, folding structure and pull structure form flat car. By the above-mentioned mode, the utility model combines flat car and ladder into one, only needs to realize through rotating and pulling mode, convenient to carry, improves construction site installation efficiency and quality, saves a large amount of time. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a kind of outside structure schematic diagram that the utility model embodiment provides two-in-one device of flat car and ladder for inside machine room formation flat car;

[0017] Fig. 2 It is a kind of outside structure schematic diagram that the utility model embodiment provides two-in-one device of flat car and ladder for inside machine room formation ladder.

[0018] In the drawing:

[0019] 1, folding structure;2, pull structure;3, wheel structure;11, rotating ladder frame;12, fixed ladder frame;121, fixed shaft;13, ladder pipe;21, fixed ladder plate;211, hook;22, pull ladder plate;23, first ladder plate;24, second ladder plate;25, first pull rod;26, second pull rod;27, first rotating shaft;28, second rotating shaft;31, frame body;32, wheel body;33, shaft body.

[0020] The utility model will be described in detail below with reference to the embodiment of the utility model and accompanying drawings. DETAILED DESCRIPTION

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figs. 1-2 As shown, this embodiment provides a two-in-one device combining a flatbed cart and a ladder for use in a computer room. It includes a folding structure 1, comprising a rotating ladder frame 11 and a fixed ladder frame 12. The rotating ladder frame 11 is rotatably connected to one side of the fixed ladder frame 12, and the included angle between the rotating ladder frame 11 and the fixed ladder frame 12 is between 0 and 180°. A pull-out structure 2 includes a fixed ladder plate 21 and a pull-out ladder plate 22. The fixed ladder frame 12 is rotatably connected to the other side of the fixed ladder plate 21, and the pull-out ladder plate 22 is slidably connected to the fixed ladder plate 21. It also includes four sets of wheel structures 3, each detachably connected to... On both sides of the fixed ladder plate 21; when the angle between the rotating ladder frame 11 and the fixed ladder frame 12 is 180°, the pull-out ladder plate 22 is completely pulled out of the fixed ladder plate 21, and the angle between the fixed ladder frame 12 and the fixed ladder plate 21 is an acute angle, the folding structure 1 and the pull-out structure 2 form a ladder; when the angle between the rotating ladder frame 11 and the fixed ladder frame 12 is 0°, the pull-out ladder plate 22 is located inside the fixed ladder plate 21, and the angle between the fixed ladder frame 12 and the fixed ladder plate 21 is a right angle or an obtuse angle, the folding structure 1 and the pull-out structure 2 form a flatbed cart.

[0025] The utility model provides a kind of inside machine room uses flat car and ladder two-in-one device, including folding structure 1, pull structure 2 and four groups of tire structure, wherein folding structure 1 includes rotating ladder frame 11 and fixed ladder frame 12, rotating ladder frame 11 can be rotatably connected in fixed ladder frame 12 one side, the included angle between rotating ladder frame 11 and fixed ladder frame 12 is between 0-180 °, when the included angle of both is 0 degree, folding structure 1 is as the pull rod part of flat car, when the included angle of both is 180 degrees, folding structure 1 is as a supporting leg of ladder;Pull structure 2 includes fixed ladder board 21 and pull ladder board 22, fixed ladder frame 12 rotatably connects fixed ladder board 21 other side, pull ladder board 22 is slidably connected in fixed ladder board 21, when pull ladder board 22 slides into fixed ladder board 21, two form the bottom plate part of flat car, when pull ladder board 22 slides out of fixed ladder board 21, two form another supporting leg of ladder;Four groups of wheel structure 3 are detachably connected in fixed ladder board 21 two sides, when wheel structure 3 is mounted, as the wheel of flat car, when disassembled, can be used as ladder;When the included angle between rotating ladder frame 11 and fixed ladder frame 12 is 180 °, pull ladder board 22 is completely pulled out of fixed ladder board 21, and the included angle between fixed ladder frame 12 and fixed ladder board 21 is acute angle, folding structure 1 and pull structure 2 form ladder;When the included angle between rotating ladder frame 11 and fixed ladder frame 12 is 0 °, pull ladder board 22 is in fixed ladder board 21, and the included angle between fixed ladder frame 12 and fixed ladder board 21 is right angle or obtuse angle, folding structure 1 and pull structure 2 form flat car.By the above-mentioned mode, the utility model combines flat car and ladder, only needs to realize by rotating and pulling mode, convenient to carry, improves construction site installation efficiency and quality, saves a large amount of time.

[0026] For folding structure 1, rotating ladder frame 11 and fixed ladder frame 12 are respectively provided with multiple ladder pipes 13 along the length direction of itself, and rotating ladder frame 11 is located on the side of fixed ladder frame 12 towards fixed ladder board 21, when rotating ladder frame 11 is folded to the included angle of 0 degrees with fixed ladder frame 12, i.e. the side of rotating ladder frame 11 is completely attached in fixed ladder frame 12, forming the pull rod part of flat car, when rotating ladder frame 11 is folded to the included angle of 180 degrees with fixed ladder frame 12, i.e. rotating ladder frame 11 is opened to the other side part attached on fixed ladder frame 12, forming a supporting leg of ladder, multiple ladder pipes 13 are arranged at intervals, so as to facilitate forming ladder, and people climb to the top of ladder from ladder pipe 13.

[0027] For the pull-out structure 2, the fixed ladder boards 21 and the pull-out ladder boards 22 are respectively provided with multiple first ladder boards 23 and multiple second ladder boards 24 at equal intervals along the length direction of the fixed ladder boards 21 and the pull-out ladder boards 22; when the pull-out ladder boards 22 are completely pulled out of the fixed ladder boards 21, the multiple first ladder boards 23 and the multiple second ladder boards 24 form an angle with the plane where the fixed ladder boards 21 are located, and when they are completely pulled out, the whole serves as another leg of the ladder stand, the fixed ladder boards 21 as a whole serve as the leg, and the plane where the fixed ladder boards 21 are located is inclined relative to the horizontal direction, so only the multiple second ladder boards 24 relative to the plane where the fixed ladder boards 21 are located can be parallel to the horizontal plane, thereby facilitating personnel to climb to another leg of the ladder stand; when the pull-out ladder boards 22 are located in the fixed ladder boards 21, the multiple first ladder boards 23 and the multiple second ladder boards 24 are parallel to the plane where the fixed ladder boards 21 are located, at this time, the fixed bottom plate and the pull-out ladder boards 22 serve as the bottom plate of the flat car, so they need to be parallel to the horizontal plane, thereby facilitating the placement of tools.

[0028] Further, the multiple first ladder boards 23 are respectively provided with first pull rods 25 on both sides, and the multiple second ladder boards 24 are respectively provided with second pull rods 26 on both sides; the two first pull rods 25 are located at the same horizontal height, and the two second pull rods 26 are located at the same horizontal height, the two first pull rods 25 drive the multiple first ladder boards 23 to rotate simultaneously, and the two second pull rods 26 drive the multiple second ladder boards 24 to rotate simultaneously, since the angles of the first ladder boards 23 and the second ladder boards 24 change, in order to ensure that all the first ladder boards 23 are parallel to each other and all the second ladder boards 24 are parallel to each other, the first pull rods 25 are used to control all the first ladder boards 23, and the second pull rods 26 are used to control all the second ladder boards 24.

[0029] Specifically, the multiple first pull rods 25 are respectively provided with first rotating shafts 27, and the multiple second pull rods 26 are respectively provided with second rotating shafts 28; the two first pull rods 25 are respectively connected to the two sides of the first rotating shaft 27, and drive the multiple first ladder boards 23 to rotate simultaneously through the first rotating shaft 27, and the two second pull rods 26 are respectively connected to the two sides of the second rotating shaft 28, and drive the multiple second ladder boards 24 to rotate simultaneously through the second rotating shaft 28, so that when the pull-out ladder boards 22 slide into or out of the fixed ladder boards 21, the multiple first ladder boards 23 and the multiple second ladder boards 24 do not interfere with each other.

[0030] More specifically, the distance between the two adjacent first rotating shafts 27 is the same as the sum of the width of the first ladder board 23 and the second ladder board 24. In order to ensure that the two first ladder boards 23 can accommodate a second ladder board 24 when serving as the bottom plate of the flat car, one first ladder board 23 and one second ladder board 24 are accommodated between the two adjacent first rotating shafts 27.

[0031] In this embodiment, when forming the bottom plate of the flat car, all the first pull rods 25 and the second pull rods 26 are located in the same plane, in order to facilitate the sliding of the ladder boards 22 out of the fixed ladder boards 21, the two cannot interfere with each other, and the first pull rods 25 are used to make all the first ladder boards 23 fold upward through all the first rotating shafts 27, and the second pull rods 26 are used to make all the second ladder boards 24 fold downward through all the second rotating shafts 28, and then all the second ladder boards 24 are smoothly slid out.

[0032] When the folding structure 1 and the pulling structure 2 are used as a ladder, the fixed ladder frame 12 is provided with a hook 211 or a fixed shaft 121, and the fixed ladder frame 12 is provided with a fixed shaft 121 or a hook 211 corresponding to the fixed ladder frame 12, so that when the fixed ladder frame 12 is rotated to form an acute angle with the fixed ladder frame 21, the relative positions of the fixed ladder frame 12 and the fixed ladder frame 21 are fixed. When the two are used as a ladder, the fixed ladder frame 12 and the fixed ladder frame 21 need to form a certain angle, at this time, the positions of the two need to be fixed, that is, the distance between the two is fixed by the way that the fixed ladder frame 12 is provided with a hook 211 or a fixed shaft 121, and the fixed ladder frame 21 is provided with a fixed shaft 121 or a hook 211 corresponding to the fixed ladder frame 12, so that the whole structure is safe and reliable. In addition, when the folding structure 1 and the pulling structure 2 are used as a flat car, the fixed ladder frame 12 and the fixed ladder frame 21 form an obtuse angle, and the fixed ladder frame 12 has a diagonal support (not shown in the figure) at the rear side to limit the rotation angle, one end of the diagonal support is fixed on the fixed ladder frame 12, and the other end is a free end. When the free end abuts against the fixed ladder frame 21, the fixed ladder frame 12 stops rotating, forming a flat car.

[0033] For the wheel structure 3, the wheel structure 3 includes a frame body 31 and three wheel bodies 32 connected to the frame body 31, the three wheel bodies 32 are arranged in a circular array around the center position of the frame body 31, and the frame body 31 is rotationally connected to the fixed ladder frame 21. Further, four shaft bodies are respectively arranged on both sides of the fixed ladder frame 21, a groove is formed in the shaft body, a passage is formed in the center position of the frame body 31 along the axis direction of the frame body 31, the frame body 31 passes into the shaft body through the passage, and the passage of the frame body 31 is clamped in the groove. The wheel structure 3 is detachable, so as not to affect the use when the whole structure is used as a ladder, and the groove structure can clamp the frame body 31 on the shaft body, thereby fixing the wheel structure 3.

[0034] The above examples of the present application have been described in detail, but the content is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage of the present application.

Claims

1. A two-in-one device of flat car and catwalk used in a machine room, characterized in that, The application relates to a folding structure, including a rotating ladder frame and a fixed ladder frame, the rotating ladder frame being rotatably connected to one side of the fixed ladder frame, the included angle between the rotating ladder frame and the fixed ladder frame being 0-180 degrees; a pulling structure, including a fixed ladder plate and a pulling ladder plate, the fixed ladder frame being rotatably connected to the other side of the fixed ladder plate, the pulling ladder plate being slidably connected to the fixed ladder plate; and four groups of wheel structures, respectively being detachably connected to the two sides of the fixed ladder plate. When the included angle between the rotating ladder frame and the fixed ladder frame is 180 degrees, the pulling ladder plate is completely pulled out of the fixed ladder plate, and the included angle between the fixed ladder frame and the fixed ladder plate is an acute angle, the folding structure and the pulling structure form a ladder stand. When the included angle between the rotating ladder frame and the fixed ladder frame is 0 degrees, the pulling ladder plate is located in the fixed ladder plate, and the included angle between the fixed ladder frame and the fixed ladder plate is a right angle or an obtuse angle, the folding structure and the pulling structure form a flatbed truck. The rotating ladder frame and the fixed ladder frame are respectively provided with multiple ladder pipes which are equidistantly arranged along the length direction of the rotating ladder frame and the fixed ladder frame. The rotating ladder frame is located on the side of the fixed ladder frame which faces the fixed ladder plate. The fixed ladder plate and the pulling ladder plate are respectively provided with multiple first ladder plates and multiple second ladder plates which are equidistantly arranged along the length direction of the fixed ladder plate and the pulling ladder plate. When the pulling ladder plate is completely pulled out of the fixed ladder plate, the multiple first ladder plates and the multiple second ladder plates form an included angle with the plane of the fixed ladder plate.

2. A two-in-one dolly and ladder device for use in a machine room as defined in claim 1, wherein, When the pulling ladder plate is located in the fixed ladder plate, the multiple first ladder plates and the multiple second ladder plates are parallel to the plane of the fixed ladder plate.

3. A two-in-one dolly and ladder device for use in a machine room as defined in claim 2, wherein, The two sides of the multiple first ladder plates are respectively provided with first pull rods, and the two sides of the multiple second ladder plates are respectively provided with second pull rods.

4. The cart and ladder combination for use in a machine room of claim 1, wherein, The two first pull rods are located at the same horizontal height, the two second pull rods are located at the same horizontal height, the two first pull rods drive the multiple first ladder plates to rotate simultaneously, and the two second pull rods drive the multiple second ladder plates to rotate simultaneously. The multiple first pull rods are respectively provided with first rotating shafts, and the multiple second pull rods are respectively provided with second rotating shafts. The two first pull rods are respectively connected to the two sides of the first rotating shafts, the two second pull rods are respectively connected to the two sides of the second rotating shafts, and the first rotating shafts drive the multiple first ladder plates to rotate simultaneously, and the second rotating shafts drive the multiple second ladder plates to rotate simultaneously, so that the multiple first ladder plates and the multiple second ladder plates do not interfere with each other when the pulling ladder plate slides into or out of the fixed ladder plate.

5. A two-in-one dolly and ladder device for use in a machine room as defined in claim 4, wherein, The distance between the two first rotating shafts is equal to the sum of the width of the first ladder plate and the width of the second ladder plate. The fixed ladder frame is provided with a hook or a fixed shaft, and the fixed ladder plate is provided with a fixed shaft or a hook, so that the relative position of the fixed ladder frame and the fixed ladder plate is fixed when the fixed ladder frame is rotated to form an acute angle with the fixed ladder plate.

6. A cart and ladder combination for use in a machine room as defined in claim 5 wherein, The wheel structure includes a frame body and three wheel bodies connected to the frame body, the three wheel bodies are arranged in a circular array around the center position of the frame body, and the frame body is rotatably connected to the fixed ladder plate. ​ 7. A cart and ladder combination for use in a machine room as defined in claim 6 wherein, ​ 8. The flatbed and ladder combination device for use in a machine room of claim 1, wherein, ​ 9. The flatbed and ladder combination device for use in a machine room of claim 1, wherein, ​ 10. The cart and ladder combination of claim 9, wherein, Four shaft bodies are arranged on both sides of the fixed ladder board respectively, grooves are arranged in the shaft bodies, a channel is arranged in the center position of the frame body along the axial direction of the frame body, the frame body is penetrated into the shaft body through the channel, and the channel of the frame body is clamped in the groove.