Chimney steel inner cylinder double-cylinder lifting titanium steel composite plate bottom construction device

Abstract

The invention relates to the technical field of chimney steel inner cylinder construction devices, in particular to a chimney steel inner cylinder double-cylinder lifting titanium steel composite plate bottom construction device which comprises a transportation assembly and two annular guide rails. The two annular guide rails are arranged at intervals in the first direction. The transportation assembly comprises an electric hoist; the electric hoist is mounted between the two annular guide rails through a first mounting frame; the conveying assembly further comprises conveying pieces, each annular guide rail is provided with one conveying piece, and the conveying pieces are slidably connected to the annular guide rails in the circumferential direction of the annular guide rails. The device has the effect of improving the moving convenience and safety of the steel inner cylinder and the titanium steel composite plate.

Description

Technical Field

[0001] The present application relates to the technical field of chimney steel inner tube construction devices, and in particular to a chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device. Background Art

[0002] Chimney steel inner tube construction technology plays a crucial role in modern large-scale industrial construction, particularly in the construction of ultra-supercritical (ultra-supercritical) coal-fired power plants, where requirements for engineering quality and efficiency are increasingly stringent. As coal-fired power generation units expand, reinforced concrete chimneys, as key supporting facilities, require increasingly advanced installation techniques for their inner steel tubes. Traditional construction methods typically rely on overhead work. While this approach meets basic requirements, its limitations become increasingly apparent as project complexity increases.

[0003] To address the transportation and splicing issues of titanium-steel composite plates, conventional methods include high-altitude hoisting, temporary scaffolding, or simple ground assembly followed by overall lifting. High-altitude hoisting utilizes equipment such as tower cranes to transport materials vertically, but carries significant safety risks. Temporary scaffolding requires the construction of complex support structures, which, while providing a platform for operation, are cumbersome and costly to disassemble and assemble. Ground assembly followed by overall lifting is limited by the lifting equipment's capabilities and on-site space, making it difficult to accommodate the simultaneous construction of two inner tubes.

[0004] Regarding the aforementioned related technologies, these traditional methods are unable to effectively solve the problem of fine-tuning the horizontal transportation and splicing of titanium-steel composite plates during the construction of double-tube sleeve reinforced concrete chimneys. Especially in confined spaces, achieving efficient and safe construction has become a technical challenge that needs to be solved urgently. Existing technologies generally lack a device that can improve the convenience and safety of moving the steel inner tube and titanium-steel composite plates, resulting in low construction efficiency and high risks of high-altitude operations. Summary of the Invention

[0005] In order to improve the convenience and safety of moving the steel inner tube and the titanium-steel composite plate, the present application provides a chimney steel inner tube double-tube lifting titanium-steel composite plate bottom construction device.

[0006] This application provides a chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device, which adopts the following technical solution: A chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device, including a transport component and two annular guide rails; The two annular guide rails are spaced apart along the first direction; The transport assembly includes an electric hoist, which is installed between the two annular guide rails through a first mounting frame; The transport assembly further includes a transport member, and each of the annular guide rails is provided with a transport member, and the transport member is slidably connected to the annular guide rail along the circumferential direction of the annular guide rail.

[0007] By adopting the above technical solution, by setting up a transport component and two annular guide rails, when transporting a steel inner tube or a composite plate, a single steel inner tube or a composite plate is transported between the two annular guide rails by an electric hoist, and the steel inner tube is lifted to the bottom of the annular guide rails by a transport component. A person moves the steel inner tube to the installation position by pulling a hand chain of the transport component. By setting up annular guide rails, small and medium range movement and docking fine-tuning of the steel inner tube and the composite plate can be achieved during the docking process, further improving the horizontal movement of the steel inner tube and the composite plate, thereby improving the efficiency of movement and position fine-tuning of the steel inner tube and the composite plate.

[0008] Optionally, it also includes a transport guide rail, the first mounting frame is fixedly connected to the two annular guide rails, the transport guide rail is fixedly connected to the first mounting frame, the transport guide rail is parallel to the second direction, the second direction is perpendicular to the first direction, and the electric hoist is slidably connected to the transport guide rail along the second direction.

[0009] By adopting the above technical solution, by setting up a transport guide rail, the electric hoist lifts the steel inner cylinder or composite plate, the electric hoist slides along the second direction to be connected to the transport guide rail, the electric hoist slides along the second direction on the transport guide rail to between the two annular guide rails, and then the steel inner cylinder or composite plate is slid along the annular guide rail by the transport member, thereby moving the steel inner cylinder to the installation position.

[0010] Optionally, a second mounting bracket is further included, wherein the second mounting bracket is connected to the bottom wall of the annular guide rail.

[0011] By adopting the above technical solution and providing a second mounting frame, the annular guide rail is supported by a plurality of second mounting frames.

[0012] Optionally, a plurality of the transport members are provided on each of the annular guide rails.

[0013] By adopting the above technical solution, by arranging multiple transport members on an annular guide rail, one transport member can move one steel inner cylinder while another transport member can transport another steel inner cylinder, thereby further improving the transportation efficiency.

[0014] Optionally, a working platform is provided on the second mounting frame, and the working platform is located below the annular guide rail.

[0015] By adopting the above technical solution and setting up a working platform, it is convenient for personnel to work on the working platform.

[0016] Optionally, a support assembly is further included, wherein the support assembly includes a first mounting ring and a support roller, the first mounting ring is fixedly connected to a side of the first mounting frame close to the working platform, a plurality of support rollers are arranged at intervals along the circumferential direction of the first mounting ring, the support roller is rotatably connected to the first mounting ring, and the support roller along the rotation axis of the first mounting ring is perpendicular to the central axis of the first mounting ring.

[0017] By adopting the above technical solution, the steel inner tube is lifted and transported by the transport parts. In order to further improve the stability of the steel inner tube during transportation, support rollers are provided and the steel inner tube is supported by multiple support rollers to improve the stability of the steel inner tube during transportation.

[0018] Optionally, a limiting assembly is further included, wherein the limiting assembly is arranged on the side of the support roller away from the first mounting ring, and the limiting assembly includes two limiting plates, and the two limiting plates are spaced apart in a direction perpendicular to the central axis of the first mounting ring. The limiting plates are directly or indirectly connected to the first mounting ring, and a limiting area is formed between the two limiting plates.

[0019] By adopting the above technical solution and setting a limit assembly, the steel inner cylinder is clamped by two limit plates, which further reduces the occurrence of sliding of the steel inner cylinder during transportation and improves the stability of the movement of the steel inner cylinder.

[0020] Optionally, the limiting plate is slidably connected to the first mounting ring along a direction perpendicular to the central axis of the first mounting ring.

[0021] By adopting the above technical solution, the limit plate slides in a direction perpendicular to the central axis of the first mounting ring, and the two limit plates clamp the steel inner cylinders of different thicknesses. At the same time, it can also improve the stability of the steel inner cylinder while ensuring that the steel inner cylinder can move smoothly.

[0022] Optionally, the limiting assembly also includes an elastic member, the expansion and contraction direction of the elastic member is perpendicular to the central axis direction of the first mounting ring, one end of the elastic member is directly or indirectly connected to the first mounting ring, and the other end is fixedly connected to the limiting plate, and the elastic member has the force to drive the limiting plate to move toward the side close to the limiting area when it is recoverable.

[0023] By adopting the above technical solution and setting an elastic member, the limiting member slides along the central axis of the first mounting ring under the action of the elastic member. When the thickness of the steel inner cylinder is large, the elastic member is compressed when the steel inner cylinder is located in the limiting area.

[0024] Optionally, the first mounting ring is slidably connected to the second mounting bracket along a third direction, and the third direction is perpendicular to both the first direction and the second direction.

[0025] By adopting the above technical solution, when the steel inner cylinder is transported to its place, in order to place the steel inner cylinder in the welding position, the first mounting ring is slid along the third direction to be connected to the second mounting frame. When personnel slide the steel inner cylinder into place by sliding the transport member along the annular guide rail, the first mounting ring slides along the third direction until the steel inner cylinder is separated from the support roller, so that personnel can move the steel inner cylinder to the welding position.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. This application provides a transport assembly and two annular guide rails. When transporting a steel inner cylinder or composite plate, an electric hoist is used to transport a single steel inner cylinder or composite plate between the two annular guide rails. The steel inner cylinder is then lifted to the bottom of the annular guide rails by a transport member. A person then pulls the hand chain of the transport member to move the steel inner cylinder to the installation position. The annular guide rails enable small to medium range movement and fine-tuning of the steel inner cylinder and composite plate during the docking process, further improving the horizontal movement of the steel inner cylinder and composite plate, thereby increasing the efficiency of movement and position fine-tuning of the steel inner cylinder and composite plate. 2. This application provides a support assembly, and the support rollers further support the steel inner cylinder, thereby improving the stability of the steel inner cylinder during movement; 3. This application sets a limit assembly, and two limit plates are used to clamp the steel inner tube, thereby further reducing the occurrence of sliding of the steel inner tube during transportation and improving the stability of the movement of the steel inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the steel inner tube and composite plate of the present application; Figure 2 It is a structural diagram of the transport assembly and the circular guide rail of the present application; Figure 3 It is a schematic diagram of the structure of the support component of this application; Figure 4 It is a structural diagram of the limit assembly of this application; Figure 5 It is a schematic diagram of the structure of the driver component of this application; Figure 6 This application Figure 5 Enlarged view of part A.

[0028] Explanation of the accompanying drawings: 01, steel inner tube; 02, composite plate; 1, transport assembly; 11, electric hoist; 12, transport part; 2, annular guide rail; 21, second mounting frame; 211, slide; 3, transport rail; 31, first mounting frame; 4, working platform; 5, support assembly; 51, first mounting ring; 511, slider; 52, support roller; 53, first mounting seat; 6, limit assembly; 61, limit plate; 62, limit area; 63, elastic part; 7, drive assembly; 71, screw; 72, motor. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] The present application discloses a chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device. For ease of description, this application introduces directional terms such as a first direction, a second direction, and a third direction to form a three-dimensional reference direction. The directional terms used, such as "first direction, second direction, and third direction," can be specifically illustrated with reference to the figure, where X represents the first direction X, Y represents the second direction Y, and Z represents the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0031] Reference Figure 1 and Figure 2 The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device includes a transport component 1 and two annular guide rails 2, the two annular guide rails 2 are spaced apart along the first direction, the transport component 1 includes an electric hoist 11, the electric hoist 11 is installed between the two annular guide rails 2 through a first mounting frame 31, the transport component 1 also includes a transport member 12, each annular guide rail 2 is provided with a transport member 12, the transport member 12 is slidably connected to the annular guide rail 2 along the circumferential direction of the annular guide rail 2; in this embodiment, the transport member 12 is a hand-pulled sports car, which is an existing The technology and specific structure are not described in detail. The steel inner cylinder 01 and the composite plate 02 are both three arc-shaped plates spliced and welded to form a circular ring structure. The composite plate 02 is arranged on the outside of the steel inner cylinder 01. When the steel inner cylinder 01 or the composite plate 02 is transported, the steel inner cylinder 01 and the composite plate 02 are transported by the electric hoist 11 and the transport part 12. After a complete steel inner cylinder 01 is welded, the steel inner cylinder 01 is lifted to a certain height by the lifting equipment, and then the other steel inner cylinder 01 is moved to the bottom of the welded steel inner cylinder 01, and the steps are repeated to complete the construction of the steel inner cylinder 01.

[0032] Reference Figure 2When transporting the steel inner tube 01 or the composite plate 02, the single-piece steel inner tube 01 or the composite plate 02 is transported between the two annular guide rails 2 by the electric hoist 11, and the steel inner tube 01 is lifted to the bottom of the annular guide rail 2 by the transport part 12. The personnel move the steel inner tube 01 to the installation position by pulling the hand chain of the transport part 12. By setting the annular guide rail, the steel inner tube 01 and the composite plate 02 can be moved in a small and medium range and fine-tuned in the docking process, thereby further improving the efficiency of the movement and position fine-tuning of the steel inner tube 01 and the composite plate 02.

[0033] Reference Figure 2 In order to facilitate moving the steel inner tube 01 between the two annular guide rails 2, the chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device also includes a transport guide rail 3, a first mounting frame 31 is fixedly connected to the two annular guide rails 2, and the transport guide rail 3 is fixedly connected to the first mounting frame 31. The transport guide rail 3 is parallel to the second direction, and the second direction is perpendicular to the first direction. Hooks are welded on the outer periphery of the steel inner tube 01 and the composite plate 02. The electric hoist 11 lifts the steel inner tube 01 or the composite plate 02, and the electric hoist 11 slides along the second direction to be connected to the transport guide rail 3. The electric hoist 11 slides along the second direction on the transport guide rail 3 to between the two annular guide rails 2, and then slides the steel inner tube 01 or the composite plate 02 along the annular guide rail 2 through the transport member 12, thereby moving the steel inner tube 01 to the installation position.

[0034] Reference Figure 2 In order to support the annular guide rail 2, the chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device also includes a second mounting frame 21, and the second mounting frame 21 is connected to the bottom wall of the annular guide rail 2 so that the annular guide rail 2 is supported by the second mounting frame 21; by setting the transport guide rail 3 and two annular guide rails 2, the two steel inner tubes 01 spaced apart along the first direction can be constructed simultaneously, thereby improving the construction efficiency of the steel inner tube 01.

[0035] Reference Figure 2 In order to further improve the construction efficiency, a plurality of transport parts 12 are provided on each annular guide rail 2. When one transport part 12 moves one steel inner cylinder 01, another transport part 12 can transport another steel inner cylinder 01, thereby further improving the transportation efficiency.

[0036] Reference Figure 2In order to facilitate personnel operation, the chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device also includes a working platform 4, which is located on the outer periphery of the steel inner tube 01. The working platform 4 is fixedly connected to the first mounting frame 31, so that personnel can stand on the working platform 4 to perform operations. By setting up the working platform 4, personnel can use the time difference between the alternating construction of the two steel inner tubes 01 spaced apart along the first direction to complete the anti-corrosion and thermal insulation construction of any steel inner tube 01 on the working platform 4, reducing the vertical cross-operation risk of traditional steel inner tube 01 welding construction and thermal insulation construction, and realizing the zero-meter layer operation of steel inner tube 01 assembly operation, thermal insulation and anti-corrosion construction, reducing the risk of high-altitude operation during steel inner tube 01 construction.

[0037] Reference Figure 3 , the steel inner tube 01 is lifted and transported by the transport part 12. In order to further improve the stability of the steel inner tube 01 during transportation, the chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device also includes a support assembly 5, the support assembly 5 includes a first mounting ring 51 and a support roller 52, the first mounting ring 51 is fixedly connected to the side of the first mounting frame 31 close to the working platform 4, and a plurality of support rollers 52 are arranged at intervals along the circumferential direction of the first mounting ring 51, and the support rollers 52 are rotatably connected to the first mounting ring 51, and the support rollers 52 are perpendicular to the central axis of the first mounting ring 51 along the rotation axis of the first mounting ring 51; when the transport part 12 lifts the steel inner tube 01, the bottom wall of the steel inner tube 01 is supported by multiple support rollers 52, thereby further improving the stability of the transportation of the steel inner tube 01 or the composite plate 02.

[0038] Reference Figure 3 Specifically, a first mounting seat 53 is provided at both ends of each support roller 52, the first mounting seat 53 is fixedly connected to the first mounting ring 51, and the support roller 52 is rotatably connected to the first mounting seat 53, and the support roller 52 is perpendicular to the central axis direction of the first mounting ring 51 along the rotation axis of the first mounting seat 53.

[0039] Reference Figure 3 and Figure 4 In order to further reduce the shaking of the steel inner tube 01 when it moves, the chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device also includes a limiting component 6, which is arranged on the side of the support roller 52 away from the first mounting ring 51, and the limiting component 6 includes two limiting plates 61, which are arranged at intervals along the direction perpendicular to the central axis of the first mounting ring 51, and the limiting plates 61 are connected to the first mounting seat 53. A limiting area 62 is formed between the two limiting plates 61, and the steel inner tube 01 is located in the limiting area 62. The steel inner tube 01 is clamped by the two limiting plates 61, thereby reducing the shaking of the steel inner tube 01 during movement and further improving the stability of the steel inner tube 01 during movement; in addition, by setting the limiting member, the steel inner tube 01 can be in a vertical state when moving.

[0040] Reference Figure 4 Since the thickness of the steel inner cylinder 01 is different, in order to enable the limiting area 62 to accommodate steel inner cylinders 01 of different thicknesses, the limiting plate 61 is slidably connected to the first mounting ring 51 in a direction perpendicular to the central axis of the first mounting ring 51 to change the width of the limiting area 62, so that the two limiting plates 61 can limit the steel inner cylinders 01 of different thicknesses.

[0041] Reference Figure 4 In order to further make the limiting plate 61 slide in a direction perpendicular to the central axis of the first mounting ring 51, the limiting assembly 6 also includes an elastic member 63. The expansion and contraction direction of the elastic member 63 is perpendicular to the central axis of the first mounting ring 51. One end of the elastic member 63 is fixedly connected to the first mounting seat 53, and the other end is fixedly connected to the limiting plate 61. The elastic member 63 has the force to drive the limiting plate 61 toward the side close to the limiting area 62 under a recoverable condition. In this embodiment, the elastic member 63 is a compression spring. Under the action of the elastic member 63, the limiting member slides in the direction of the central axis of the first mounting ring 51. When the thickness of the steel inner cylinder 01 is large, the steel inner cylinder 01 is located in the limiting area 62, and the elastic member 63 is compressed.

[0042] Reference Figure 5 When the steel inner cylinder 01 is transported to its place, in order to place the steel inner cylinder 01 in the welding position, the first mounting ring 51 is slidably connected to the second mounting frame 21 along the third direction. The third direction is perpendicular to both the first direction and the second direction. When personnel slide the steel inner cylinder 01 into place by sliding the transport member 12 along the annular guide rail 2, the first mounting ring 51 slides along the third direction until the steel inner cylinder 01 is separated from the support roller 52, so that personnel can move the steel inner cylinder 01 to the welding position.

[0043] Reference Figure 5 In order to drive the first mounting ring 51 to slide along the third direction, the chimney steel inner tube double-drum lifting titanium steel composite plate bottom construction device also includes a driving assembly 7, which includes a screw 71 and a motor 72. The screw 71 is rotatably connected to the second mounting frame 21, and the screw 71 is parallel to the third direction. The screw 71 is parallel to the third direction along the rotation axis of the second mounting frame 21. The first mounting ring 51 is sleeved on the screw 71 and slides along the length of the screw 71. The motor 72 housing is fixedly connected to the second mounting frame 21, and the output shaft of the motor 72 is coaxially fixedly connected to the screw 71. The motor 72 drives the screw 71 to rotate, and further drives the first mounting ring 51 to slide along the third direction.

[0044] Reference Figure 5 and Figure 6In order to guide the first mounting ring 51 to slide along the length direction of the screw rod 71, a slider 511 is fixedly connected to the outer peripheral wall of the first mounting ring 51, and the second mounting frame 21 is provided with a sliding groove 211 for the sliding of the slider 511 along the third direction. The slider 511 slides along the third direction in the sliding groove 211, and the cooperation between the sliding groove 211 and the slider 511 guides the sliding of the first mounting ring 51 along the length direction of the screw rod 71.

[0045] The implementation principle of the chimney steel inner tube double-drum lifting titanium steel composite plate bottom construction device of the present application embodiment is as follows: during construction, the single steel inner tube 01 or the composite plate 02 is transported between the two annular guide rails 2 by the electric hoist 11, the steel inner tube 01 is lifted to the bottom of the annular guide rails by the transport member 12, and the personnel move the steel inner tube 01 to the installation position by pulling the hand chain of the transport member 12; When the steel inner tube 01 or the composite plate 02 is lifted by the transport part 12, the motor 72 is started, and the first mounting ring 51 is driven to slide along the third direction by the screw 71, so that the multiple support rollers 52 support the bottom wall of the steel inner tube 01, and the two limit plates 61 clamp the steel inner tube 01, further improving the stability of the steel inner tube 01 during transportation. When the personnel transport the steel inner tube 01 to the position by hand-pulling the transport part 12, the screw 71 drives the first mounting ring 51 to slide along the third direction until it is separated from the steel inner tube 01, so that the personnel can move the steel inner tube 01 for installation.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device, characterized by: It comprises a transport assembly (1) and two annular guide rails (2); The two annular guide rails (2) are spaced apart along a first direction; The transport assembly (1) comprises an electric hoist (11), and the electric hoist (11) is mounted between the two annular guide rails (2) via a first mounting frame (31); The transport assembly (1) further comprises a transport member (12), each of the annular guide rails (2) being provided with a transport member (12), and the transport member (12) being slidably connected to the annular guide rail (2) along the circumferential direction of the annular guide rail (2).

2. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 1 is characterized by: The invention also includes a transport guide rail (3), wherein the first mounting frame (31) is fixedly connected to the two annular guide rails (2), the transport guide rail (3) is fixedly connected to the first mounting frame (31), the transport guide rail (3) is parallel to a second direction, the second direction is perpendicular to the first direction, and the electric hoist (11) is slidably connected to the transport guide rail (3) along the second direction.

3. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 1 is characterized by: It also includes a second mounting frame (21), which is connected to the bottom wall of the annular guide rail (2).

4. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 1 is characterized by: A plurality of transport members (12) are provided on each of the annular guide rails (2).

5. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 3 is characterized by: A working platform (4) is provided on the second mounting frame (21), and the working platform (4) is located below the annular guide rail (2).

6. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 5, characterized in that: The invention also includes a support assembly (5), wherein the support assembly (5) includes a first mounting ring (51) and a support roller (52), wherein the first mounting ring (51) is fixedly connected to a side of the first mounting frame (31) close to the working platform (4), and a plurality of support rollers (52) are arranged at intervals along the circumferential direction of the first mounting ring (51), and the support rollers (52) are rotatably connected to the first mounting ring (51), and the support rollers (52) are perpendicular to the central axis of the first mounting ring (51) along the rotation axis of the first mounting ring (51).

7. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 6, characterized in that: The invention also includes a limiting assembly (6), wherein the limiting assembly (6) is arranged on a side of the supporting roller (52) away from the first mounting ring (51), and the limiting assembly (6) includes two limiting plates (61). The two limiting plates (61) are spaced apart in a direction perpendicular to the central axis of the first mounting ring (51). The limiting plates (61) are directly or indirectly connected to the first mounting ring (51), and a limiting area (62) is formed between the two limiting plates (61).

8. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 7, characterized in that: The limiting plate (61) is slidably connected to the first mounting ring (51) along a direction perpendicular to the central axis of the first mounting ring (51).

9. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 8, characterized in that: The limiting assembly (6) further includes an elastic member (63), the expansion and contraction direction of the elastic member (63) being perpendicular to the central axis direction of the first mounting ring (51), one end of the elastic member (63) being directly or indirectly connected to the first mounting ring (51), and the other end being fixedly connected to the limiting plate (61), and the elastic member (63) having a force to drive the limiting plate (61) to move toward a side close to the limiting area (62) under a recoverable condition.

10. The chimney steel inner tube double-tube lifting titanium steel composite plate bottom construction device according to claim 6, characterized in that: The first mounting ring (51) is slidably connected to the second mounting frame (21) along a third direction, and the third direction is perpendicular to both the first direction and the second direction.

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