Low-clearance bailey truss dismantling construction method

Abstract

The invention relates to the technical field of Bailey truss dismantling, in particular to a low-clearance Bailey truss dismantling construction method which comprises the following steps that S1, a sliding rail device is installed on the bottom face of a stadium, and the output end of the sliding rail device extends out of the stadium; s2, a lifting hook of the sliding rail device is connected with the bailey truss; s3, the bailey truss is hoisted, so that the bailey truss is in a detached state, and the length of the bailey truss is reduced to enable the bailey truss to pass through the space between the two bearing columns; s4, the bailey truss is moved out of the stadium through a sliding rail device; and S5, the bailey truss is placed on the ground through the sliding rail device. According to the low-clearance bailey truss dismantling construction method, the sliding rail device is installed below the stadium, so that the bailey truss can be conveniently moved out of the stadium, meanwhile, the bailey truss is switched to the dismantling state, the length of the bailey truss is reduced, the bailey truss can conveniently penetrate through the space between the two bearing columns, and then dismantling of the bailey truss is achieved at low cost; and meanwhile, the construction efficiency of dismantling the bailey truss is improved.

Description

Technical Field

[0001] The invention relates to the technical field of Bailey frame dismantling, and in particular to a low-clearance Bailey frame dismantling construction method. Background Art

[0002] When constructing a building on the roof, such as constructing a sports stadium on the top of a teaching building, if there is a building that needs to be protected below the sports stadium, a temporary support frame is often built around the building to be protected, and a Bailey frame is installed on the temporary support frame to support the formwork used to construct the sports stadium.

[0003] Before the construction of the stadium, the Bailey frame can be directly lifted to the temporary support frame by a crane. However, after the construction of the stadium is completed, the space on the top of the Bailey frame is small, and the crane arm cannot be extended to a higher position, that is, the angle between the boom and the horizontal plane cannot be too large. If the angle between the boom and the horizontal plane is small, such as Figure 1 As shown, the boom will interfere with the edge of the Bailey frame.

[0004] In addition, after the construction of the stadium was completed, the Bailey frame was placed in a smaller space under the stadium, and two load-bearing columns were added near the building that needed to be protected. The shortest path to move the Bailey frame out from under the stadium required passing between the two load-bearing columns, and the length of the Bailey frame exceeded the distance between the two load-bearing columns, making it difficult to move the Bailey frame out from under the stadium. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to solve the technical problems in the prior art, the present invention provides a low-clearance Bailey frame dismantling construction method.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a low-clearance Bailey frame dismantling construction method, comprising the following steps: S1, installing a slide rail device on the bottom surface of a stadium, and extending the output end of the slide rail device to the outside of the stadium; S2, connecting the hook of the slide rail device to the Bailey frame; S3, lifting the Bailey frame to put the Bailey frame in a disassembled state, so that the length of the Bailey frame is reduced to be able to pass between two load-bearing columns; S4, moving the Bailey frame to the outside of the stadium through the slide rail device; S5, placing the Bailey frame on the ground through the slide rail device.

[0007] A low-clearance Bailey frame dismantling construction method of the present invention facilitates the movement of the Bailey frame outside the stadium by installing a slide rail device under the stadium, and at the same time utilizes the Bailey frame to switch to a dismantling state to reduce the length of the Bailey frame so that it can pass between two load-bearing columns, thereby achieving the dismantling of the Bailey frame at a lower cost and improving the construction efficiency of the Bailey frame dismantling.

[0008] Furthermore, the slide rail device includes a guide rail installed at the bottom of the stadium and connected to the embedded parts reserved at the bottom of the stadium, and one end of the guide rail extends out of the stadium; a sliding plate is arranged under the guide rail and can slide relative to the guide rail; a sliding assembly is arranged on the top surface of the sliding plate to drive the sliding plate to slide relative to the guide rail; and a lifting assembly is arranged on the top surface of the sliding plate and is suitable for lifting objects.

[0009] Furthermore, the sliding assembly includes a mounting plate, a rotating member and a driving wheel, the mounting plate is fixedly connected to the sliding plate, the rotating member is fixedly connected to the mounting plate, the driving wheel is rotatably connected to the mounting plate, a sliding groove is provided on the guide rail, the driving wheel is suitable for rolling in the sliding groove, and the output end of the rotating member is connected to the driving wheel to drive the driving wheel to rotate.

[0010] Furthermore, the output end of the rotating member is coaxially fixedly connected with a power wheel, the driving wheel is coaxially fixedly connected with a transmission wheel, and the power wheel and the transmission wheel are transmitted via a flexible transmission member.

[0011] Furthermore, a support wheel is rotatably connected to the mounting plate, and the support wheel rolls in the slide groove.

[0012] Furthermore, the mounting plate is rotatably connected to a limiting wheel, the axis of the limiting wheel is arranged along the vertical direction, and the side wall of the limiting wheel is in contact with the slide rail.

[0013] Furthermore, the Bailey frame includes a long Bailey frame; two short Bailey frames are provided and located at both ends of the long Bailey frame, the bottom of the side wall of the short Bailey frame is hinged to the long Bailey frame, and a connecting component is provided between the top of the short Bailey frame and the top of the long Bailey frame, and the connecting component is used to switch the top of the short Bailey frame and the top of the long Bailey frame between a connected state and a disassembled state; when the top of the short Bailey frame and the top of the long Bailey frame are in the disassembled state, when the long Bailey frame is lifted, the two short Bailey frames rotate downward to reduce the maximum distance between the two short Bailey frames.

[0014] Furthermore, the long Bailey frame is provided with a connecting portion, the short Bailey frame is provided with a connecting groove for inserting the connecting portion, and the connecting assembly is arranged on the side wall of the connecting groove and can be connected to the connecting portion.

[0015] Furthermore, the connecting assembly includes a connecting block and a compression spring. A sliding groove is provided on the side wall of the connecting groove. The connecting block slides in the sliding groove. A card slot for inserting the connecting block is provided on the connecting part. The compression spring is located between the connecting block and one end of the sliding groove away from the card slot.

[0016] Furthermore, the end of the connecting block facing the long Bailey frame is provided with a first inclined surface, and the end of the connecting portion facing the short Bailey frame is provided with a second inclined surface. When the short Bailey frame rotates toward the connecting portion, the first inclined surface contacts the second inclined surface and presses the connecting block back into the slide groove.

[0017] Furthermore, a disassembly rod is provided in the slot, and the disassembly rod slides in the connecting part along the vertical direction. A disassembly block is provided on the disassembly rod, and an arc surface is provided on the disassembly block. The arc surface is used to contact the connecting block and press the connecting block back into the slide groove; a pull hook is provided on the long Bailey frame to slide in the vertical direction, and the bottom of the pull hook is connected to the disassembly rod; a first lifting ring is provided on the long Bailey frame, and the first lifting ring is arranged in the middle position of the long Bailey frame; two second lifting rings are provided on the long Bailey frame, and the two second lifting rings are arranged at both ends of the long Bailey frame, and the pull hook is located in the second lifting ring.

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

[0019] 1. By installing a slide rail device under the stadium, the Bailey frame can be moved outside the stadium. At the same time, the Bailey frame can be switched to the disassembly state to reduce the length of the Bailey frame so that it can pass between two load-bearing columns, thereby realizing the removal of the Bailey frame at a lower cost and improving the construction efficiency of the Bailey frame removal;

[0020] 2. By reserving embedded parts at the bottom of the stadium, it is convenient to install the guide rail, and then the sliding assembly drives the sliding plate to move relative to the guide rail to drive the lifting assembly to move, so as to facilitate the Bailey frame to be moved outside the bottom of the stadium, so as to facilitate the transfer of the Bailey frame and improve the construction efficiency;

[0021] 3. By setting the lifting assembly on the top surface of the sliding plate and the highest point of the lifting assembly being lower than the highest surface of the guide rail, the various components are integrated as much as possible in a lower height range, thereby adapting to the narrow space between the objects and the bottom of the stadium;

[0022] 4. The sliding plate is guided and limited by the support wheel and the limit wheel to improve the stability and accuracy of the sliding plate's movement;

[0023] 5. The top of the short Bailey frame and the top of the long Bailey frame are switched between a connected state and a disassembled state through the connecting assembly. In the connected state, the top of the long Bailey frame is connected to the top of the short Bailey frame to serve as a support for the template. In the disassembled state, the top of the long Bailey frame is separated from the top of the short Bailey frame, and the short Bailey frame rotates downward to reduce the maximum distance between the two short Bailey frames, thereby facilitating the Bailey frame as a whole to pass between the two load-bearing columns, thereby solving the problem of Bailey frame disassembly and removal at a lower cost, and the construction efficiency is high;

[0024] 6. By setting the first inclined surface and the second inclined surface, it is convenient to realize automatic connection between the top of the short Bailey frame and the top of the long Bailey frame when the short Bailey frame moves toward the long Bailey frame;

[0025] 7. By setting the disassembly rod, the disassembly block and the arc surface, the disassembly rod is moved so that the arc surface contacts the connecting block, and then the connecting block is pressed back into the slide slot, so as to realize the automatic separation of the top of the short Bailey frame and the top of the long Bailey frame;

[0026] 8. By setting the pull hook in the second lifting ring, when lifting through the second lifting ring, the upper hook is also pulled to move, so as to realize the automatic separation of the top of the short Bailey frame and the top of the long Bailey frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 It is a structural schematic diagram of the interference of the boom in the background technology.

[0029] Figure 2 The present invention is a schematic flow chart of a low-headroom Bailey frame dismantling construction method.

[0030] Figure 3 It is a schematic structural diagram of the entire slide rail device in the present invention.

[0031] Figure 4 It is a schematic diagram of the connection structure of the guide rail and the sliding plate in the present invention.

[0032] Figure 5 It is a schematic diagram of a sliding assembly in the present invention.

[0033] Figure 6 It is a schematic diagram of the guide rail, the limit plate and the baffle in the present invention.

[0034] Figure 7 It is a schematic diagram of the structure of the Bailey frame as a whole in the present invention.

[0035] Figure 8 It is a schematic diagram showing the top of the short Bailey frame and the top of the long Bailey frame in a connected state in the present invention.

[0036] Fig. 9 It is a schematic diagram showing the top of the short Bailey frame and the top of the long Bailey frame in a disassembled state in the present invention.

[0037] Fig.10 It is a cross-sectional schematic diagram embodying the connecting block and the compression spring in the present invention.

[0038] Fig.11 It is a partial schematic diagram of the disassembly block and the arc surface in the present invention.

[0039] Fig.12 yes Figure 7 A partial enlarged view of part A in the middle.

[0040] In the figure: 1. long Bailey frame; 11. connecting part; 111. second inclined surface; 12. slot; 13. disassembly rod; 14. disassembly block; 141. arc surface; 15. hook; 16. first lifting ring; 17. second lifting ring; 2. short Bailey frame; 21. connecting groove; 22. Bailey slide; 31. guide rail; 311. slide; 312. baffle; 313. limit plate; 32. sliding plate; 33. sliding assembly; 331. mounting plate; 332. rotating part; 333. driving wheel; 334. power wheel; 335. flexible transmission part; 336. supporting wheel; 337. limit wheel; 338. transmission wheel; 34. lifting assembly; 4. connecting assembly; 41. connecting block; 411. first inclined surface; 42. compression spring. DETAILED DESCRIPTION

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The invention discloses a low-clearance Bailey frame dismantling construction method.

[0044] Reference Figure 2A low clearance Bailey frame dismantling construction method comprises the following steps:

[0045] S1. Install a slide rail device on the bottom surface of the stadium, and extend the output end of the slide rail device outside the stadium.

[0046] S2. Connect the hook of the slide rail device to the Bailey frame.

[0047] S3. Lift the Bailey frame and place it in a disassembled state, so that the length of the Bailey frame is reduced to a length that allows it to pass between two load-bearing columns.

[0048] S4. Move the Bailey rack outside the stadium using a slide rail device.

[0049] S5. Place the Bailey rack on the ground using the slide rail device.

[0050] Reference Figures 2 to 6 The slide rail device 3 includes a guide rail 31 installed at the bottom of the stadium. The guide rail 31 is fixedly connected to the embedded parts reserved at the bottom of the stadium by bolts, and one end of the guide rail 31 extends out of the stadium. A sliding plate 32 is provided below the guide rail 31. The sliding plate 32 can slide relative to the guide rail 31 through a sliding assembly 33. A lifting assembly 34 is installed on the sliding plate 32. The lifting assembly 34 is suitable for lifting objects. By reserving embedded parts at the bottom of the stadium, it is convenient to install the guide rail 31. Then, the sliding plate 32 is driven to move relative to the guide rail 31 by the sliding assembly 33 to drive the lifting assembly 34 to move, thereby facilitating the movement of the objects to be lifted outside the bottom of the stadium, thereby facilitating the transfer of the objects and improving the construction efficiency.

[0051] In order to improve the stability of the movement of the sliding plate 32 , two sets of sliding components 33 are provided opposite to each other along the width direction of the slide rail.

[0052] Specifically, the sliding assembly 33 includes a mounting plate 331, a rotating member 332 and a driving wheel 333. The mounting plate 331 is fixedly connected to the sliding plate 32, the rotating member 332 is fixedly connected to the mounting plate 331, the driving wheel 333 is rotatably connected to the mounting plate 331, and a slide groove 311 is provided on the guide rail 31, and the driving wheel 333 is suitable for rolling in the slide groove 311. The output end of the rotating member 332 is coaxially fixedly connected with a power wheel 334, and the driving wheel 333 is coaxially fixedly connected with a transmission wheel 338. The power wheel 334 and the transmission wheel 338 are transmitted through a flexible transmission member 335, so that the rotating member 332 can drive the driving wheel 333 to rotate. The flexible transmission member 335 can be a chain or a synchronous belt. The load on the driving wheel 333 can be buffered by the flexible transmission member 335, thereby reducing the load transmitted to the output end of the rotating member 332.

[0053] More specifically, the mounting plate 331 is rotatably connected with a support wheel 336, which rolls in the slide groove 311. Two support wheels 336 are provided on each mounting plate 331, and the two support wheels 336 are arranged on both sides of the driving wheel 333 to reduce the load borne by the driving wheel 333. The surface of the driving wheel 333 is provided with an elastic material, which can be a rubber ring, so that when the driving wheel 333 is working, the support wheel 336 bears most of the load, while the driving wheel 333 bears a small part of the load and is kept in a compressed state to ensure the friction between the driving wheel 333 and the bottom of the slide groove 311, so as to drive the sliding plate 32 to slide relative to the guide rail 31.

[0054] Furthermore, the mounting plate 331 is rotatably connected with a limiting wheel 337, the axis of which is arranged in the vertical direction, and the side wall of which is in contact with the slide rail. Each mounting plate 331 is provided with a set of limiting wheels 337, and the two sets of limiting wheels 337 cooperate with each other to assist in positioning the sliding plate 32 relative to the guide rail 31 along the width direction of the guide rail 31, thereby further improving the stability of the sliding plate 32.

[0055] Furthermore, one end of the guide rail 31 is fixedly connected to a baffle 312 , and the other end is detachably connected to a limit plate 313 via bolts. The limit plate 313 is arranged at one end of the guide rail 31 extending out of the bottom of the stadium.

[0056] It should be noted that two groups of lifting assemblies 34 are arranged opposite to each other along the width direction of the guide rail 31, and the lifting ropes of the two groups of lifting assemblies 34 are located on both sides of the sliding plate 32. The lifting assemblies 34 are installed on the top surface of the sliding plate 32, and the highest point of the lifting assemblies 34 is lower than the highest surface of the guide rail 31. The lifting assemblies 34 include a crane and a hook connected to the output end of the crane.

[0057] By reserving embedded parts at the bottom of the stadium, it is convenient to install the guide rail 31, and then the sliding plate 32 is driven by the sliding assembly 33 to move relative to the guide rail 31 to drive the lifting assembly 34 to move, thereby facilitating the movement of the items to be lifted outside the bottom of the stadium, thereby facilitating the transfer of the items and improving construction efficiency.

[0058] By setting the lifting assembly 34 on the top surface of the sliding plate 32, and the highest point of the lifting assembly 34 is lower than the highest surface of the guide rail 31, the various components are integrated in a lower height range as much as possible, thereby adapting to the narrow space between the objects and the bottom of the stadium. The sliding plate 32 is guided and limited by the support wheel 336 and the limit wheel 337, so as to improve the stability and accuracy of the movement of the sliding plate 32.

[0059] Reference Figures 7 to 12The Bailey frame includes a long Bailey frame 1 and two short Bailey frames 2. The two short Bailey frames 2 are located at both ends of the long Bailey frame 1. The bottom of the side wall of the short Bailey frame 2 is hinged to the long Bailey frame 1. A connecting component 4 is provided between the top of the short Bailey frame 2 and the top of the long Bailey frame 1. The connecting component 4 is used to switch the top of the short Bailey frame 2 and the top of the long Bailey frame 1 between a connected state and a disassembled state. When the top of the short Bailey frame 2 and the top of the long Bailey frame 1 are in a disassembled state, when the long Bailey frame 1 is hoisted, the two short Bailey frames 2 rotate downward to reduce the maximum distance between the two short Bailey frames 2.

[0060] Specifically, the long Bailey frame 1 is provided with a connecting portion 11 , the short Bailey frame 2 is provided with a connecting groove 21 for inserting the connecting portion 11 , and the connecting assembly 4 is arranged on the side wall of the connecting groove 21 and can be connected to the connecting portion 11 .

[0061] More specifically, the connection assembly 4 includes a connection block 41 and a compression spring 42. A Bailey slot 22 is provided on the side wall of the connection slot 21. The connection block 41 slides in the Bailey slot 22. A slot 12 for inserting the connection block 41 is provided on the connection portion 11. The compression spring 42 is located between the connection block 41 and one end of the Bailey slot 22 away from the slot 12. One end of the compression spring 42 is fixedly connected to the connection block 41, and the other end is fixedly connected to one end of the Bailey slot 22 away from the slot 12.

[0062] In order to realize the automatic connection between the top of the short Bailey frame 2 and the top of the long Bailey frame 1, a first inclined surface 411 is provided at one end of the connection block 41 facing the long Bailey frame 1, and a second inclined surface 111 is provided at one end of the connection portion 11 facing the short Bailey frame 2. When the short Bailey frame 2 rotates toward the connection portion 11, the first inclined surface 411 contacts the second inclined surface 111 and presses the connection block 41 back into the Bailey slide groove 22. When the end of the connection portion 11 away from the long Bailey frame 1 abuts against the side wall of the connection groove 21, the connection block 41 is inserted into the connection groove 21 under the action of the compression spring 42, so as to realize the automatic connection between the top of the short Bailey frame 2 and the top of the long Bailey frame 1. The connection assembly 4 and the second inclined surface 111 are both provided with two groups along the width direction of the connection portion 11, so as to improve the reliability of the connection between the top of the short Bailey frame 2 and the top of the long Bailey frame 1.

[0063] Furthermore, a disassembly rod 13 is provided in the slot 12, and the disassembly rod 13 slides in the connecting portion 11 along the vertical direction. A disassembly block 14 is fixed on the disassembly rod 13, and a circular arc surface 141 is provided on the disassembly block 14. The circular arc surface 141 is used to contact with two connecting blocks 41 and press the connecting blocks 41 back into the Bailey slide groove 22. A pull hook 15 slides in the vertical direction on the long Bailey frame 1, and the bottom of the pull hook 15 is fixedly connected to the disassembly rod 13. Two disassembly rods 13 and two pull hooks 15 are provided, and are located at both ends of the long Bailey frame 1.

[0064] A first lifting ring 16 is fixedly connected to the long Bailey frame 1, and the first lifting ring 16 is arranged in the middle position of the long Bailey frame 1. Two second lifting rings 17 are fixedly connected to the long Bailey frame 1, and the two second lifting rings 17 are arranged at both ends of the long Bailey frame 1. Two hooks 15 are respectively located in the two second lifting rings 17. When using the Bailey frame, first connect it with the first lifting ring 16 through the hook to lift the Bailey frame to a preset position; when the Bailey frame needs to be disassembled, connect it with the second lifting ring 17 and the hook 15 through the hook, and when the Bailey frame is lifted, the upper hook is also pulled to move, so as to realize the automatic separation of the top of the short Bailey frame 2 and the top of the long Bailey frame 1, and in the process of lifting the long Bailey frame 1, the two short Bailey frames 2 rotate under the action of their own gravity, so that the maximum distance between the two short Bailey frames 2 is reduced.

[0065] The top of the short Bailey frame 2 and the top of the long Bailey frame 1 are switched between a connected state and a disassembled state through the connecting component 4. In the connected state, the top of the long Bailey frame 1 is connected to the top of the short Bailey frame 2 to serve as a support for the template. In the disassembled state, the top of the long Bailey frame 1 is separated from the top of the short Bailey frame 2, and the short Bailey frame 2 is rotated downward to reduce the maximum distance between the two short Bailey frames 2, thereby facilitating the Bailey frame as a whole to pass between the two load-bearing columns, thereby solving the problem of disassembling and removing the Bailey frame at a relatively low cost, and with high construction efficiency.

[0066] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A low clearance Bailey frame dismantling construction method, characterized in that: The steps include: S1, installing a slide rail device (3) on the bottom surface of the stadium, and making the output end of the slide rail device (3) extend outside the stadium; S2, connecting the hook of the slide rail device (3) to the Bailey frame; S3, lifting the Bailey frame, making it in a disassembled state, so that the length of the Bailey frame is reduced to be able to pass between the two load-bearing columns; S4, moving the Bailey frame outside the stadium by means of the slide rail device (3); S5. Place the Bailey frame on the ground via the slide rail device (3).

2. A low clearance Bailey frame dismantling construction method according to claim 1, characterized in that: The slide rail device (3) comprises A guide rail (31) is installed at the bottom of the stadium and connected to a pre-embedded part reserved at the bottom of the stadium, and one end of the guide rail (31) extends outside the stadium; A sliding plate (32) is disposed below the guide rail (31) and is capable of sliding relative to the guide rail (31); A sliding assembly (33) is disposed on the top surface of the sliding plate (32) to drive the sliding plate (32) to slide relative to the guide rail (31); The lifting assembly (34) is arranged on the top surface of the sliding plate (32) and is suitable for lifting objects.

3. A low clearance Bailey frame dismantling construction method according to claim 2, characterized in that: The sliding assembly (33) comprises a mounting plate (331), a rotating member (332) and a driving wheel (333); the mounting plate (331) is fixedly connected to the sliding plate (32); the rotating member (332) is fixedly connected to the mounting plate (331); the driving wheel (333) is rotatably connected to the mounting plate (331); a slide groove (311) is provided on the guide rail (31); the driving wheel (333) is suitable for rolling in the slide groove (311); and the output end of the rotating member (332) is connected to the driving wheel (333) to drive the driving wheel (333) to rotate.

4. A low clearance Bailey frame dismantling construction method according to claim 3, characterized in that: The output end of the rotating member (332) is coaxially fixedly connected to a power wheel (334), the driving wheel (333) is coaxially fixedly connected to a transmission wheel (338), and the power wheel (334) and the transmission wheel (338) are transmitted via a flexible transmission member (335).

5. A low clearance Bailey frame dismantling construction method as claimed in claim 3, characterized in that: A support wheel (336) is rotatably connected to the mounting plate (331), and the support wheel (336) rolls in the slide groove (311).

6. A low clearance Bailey frame dismantling construction method as claimed in claim 5, characterized in that: The mounting plate (331) is rotatably connected to a limiting wheel (337), the axis of the limiting wheel (337) is arranged in a vertical direction, and the side wall of the limiting wheel (337) is in contact with the slide rail.

7. A low clearance Bailey frame dismantling construction method as claimed in claim 1, characterized in that: The Bailey frame includes Long Bailey Rack (1); Two short Bailey frames (2) are provided and are located at both ends of the long Bailey frame (1); the bottom of the side wall of the short Bailey frame (2) is hinged to the long Bailey frame (1); a connecting component (4) is provided between the top of the short Bailey frame (2) and the top of the long Bailey frame (1); the connecting component (4) is used to switch the top of the short Bailey frame (2) and the top of the long Bailey frame (1) between a connected state and a disassembled state; When the top of the short Bailey frame (2) and the top of the long Bailey frame (1) are in a disassembled state, when the long Bailey frame (1) is hoisted, the two short Bailey frames (2) rotate downwards to reduce the maximum distance between the two short Bailey frames (2).

8. A low clearance Bailey frame dismantling construction method as claimed in claim 7, characterized in that: The long Bailey frame (1) is provided with a connecting portion (11), the short Bailey frame (2) is provided with a connecting groove (21) for inserting the connecting portion (11), and the connecting assembly (4) is arranged on a side wall of the connecting groove (21) and can be connected to the connecting portion (11).

9. A low clearance Bailey frame dismantling construction method as claimed in claim 8, characterized in that: The connecting assembly (4) comprises a connecting block (41) and a compression spring (42); a Bailey slide groove (22) is provided on the side wall of the connecting groove (21); the connecting block (41) slides in the Bailey slide groove (22); a clamping groove (12) for inserting the connecting block (41) is provided on the connecting portion (11); and the compression spring (42) is located between the connecting block (41) and an end of the Bailey slide groove (22) away from the clamping groove (12); The end of the connecting block (41) facing the long Bailey frame (1) is provided with a first inclined surface (411), and the end of the connecting portion (11) facing the short Bailey frame (2) is provided with a second inclined surface (111); when the short Bailey frame (2) rotates toward the connecting portion (11), the first inclined surface (411) contacts the second inclined surface (111) and presses the connecting block (41) back into the Bailey slide groove (22).

10. A low clearance Bailey frame dismantling construction method as claimed in claim 9, characterized in that: A disassembly rod (13) is provided in the clamping groove (12), and the disassembly rod (13) slides in the connecting portion (11) along the vertical direction. A disassembly block (14) is provided on the disassembly rod (13), and an arc surface (141) is provided on the disassembly block (14). The arc surface (141) is used to contact with the connecting block (41) and press the connecting block (41) back into the Bailey slide groove (22); The long Bailey frame (1) is provided with a first lifting ring (16), and the first lifting ring (16) is arranged at a middle position of the long Bailey frame (1); A draw hook (15) is provided on the long Bailey frame (1) and slides in the vertical direction, and the bottom of the draw hook (15) is connected to the disassembly rod (13); two second lifting rings (17) are provided on the long Bailey frame (1), and the two second lifting rings (17) are arranged at two ends of the long Bailey frame (1), and the draw hook (15) is located in the second lifting ring (17).

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