A segment dismantling sling and a method of using the same

Abstract

This invention discloses a segment dismantling lifting tool, comprising a first arc-shaped plate, a second arc-shaped plate, and a connecting structure connected to the first and second arc-shaped plates. The connecting structure includes a first connecting plate, a second connecting plate, and a third connecting plate connected to the first and second connecting plates. The first, second, and third connecting plates form a box structure. A lifting section is provided on the first arc-shaped plate. The connecting structure has mounting holes corresponding to segment connection holes on the segment to be dismantled. Bolts for inserting into the segment connection holes to connect and fix the segment dismantling lifting tool and the segment to be dismantled are inserted into the mounting holes. The segment dismantling lifting tool provided by this invention can increase the contact area between the lifting tool and the segment, resulting in uniform force distribution, effectively preventing segment damage, improving the integrity and reusability of the dismantled segments, and enhancing the safety of the dismantling process.

Description

Technical Field

[0001] This invention relates to the field of tunnel segment removal technology, specifically to a tunnel segment removal lifting tool and its usage method. Background Technology

[0002] As a major component of subway transportation lines, underground tunnels are typically constructed using large-scale shield tunneling. Precast concrete segments are shaped into arcs according to the working face of the tunnel and lined the inner wall to support it. After a certain length is reached, the segments need to be dismantled for reuse, improving resource utilization, conserving resources, and enhancing socio-economic benefits. Controlling the dismantling lifting equipment is crucial for the safety of segment lifting and minimizing damage.

[0003] There are various types of lifting tools available for tunnel segment removal, the most common of which involves clamping the lifting tool onto the side of the segment for hoisting. Due to the significant weight and volume of the tunnel segments, two lifting tools are typically installed symmetrically on the sides for hoisting. The force on the lifting hole surface is at an angle to the side of the segment, and since the lifting hole surface is perpendicular to the side of the segment, the force on the lifting tools is uneven. This causes the segment to tilt during hoisting. Because it is difficult to ensure uniform force on the lifting ropes, they are prone to swaying back and forth or left and right during movement, resulting in poor balance performance. This affects the stability of the hoisting and can easily lead to damage or slippage of the segment, causing safety accidents.

[0004] Therefore, in order to address the above issues, it is still necessary to develop a lifting device that can improve the safety and integrity of the segments during the segment removal process. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a segment removal lifting tool and its usage method, which has a simple structure and is easy to install and remove. By using the segment removal lifting tool provided by this invention, the safety and integrity of the segment removal process can be improved.

[0006] To achieve the above objectives, a first aspect of the present invention provides a segment removal lifting device, comprising a first arc-shaped plate, a second arc-shaped plate, and a connecting structure connected to the first arc-shaped plate and the second arc-shaped plate. The connecting structure includes a first connecting plate, a second connecting plate, and a third connecting plate connected to the first connecting plate and the second connecting plate. The first connecting plate, the second connecting plate, and the third connecting plate form a box structure. The first arc-shaped plate is provided with a lifting part, and the third connecting plate of the connecting structure is provided with a mounting hole. The mounting hole corresponds to a segment connection hole provided on the segment to be removed. A bolt for inserting into the segment connection hole to connect and fix the segment removal lifting device and the segment to be removed is provided in the mounting hole.

[0007] Furthermore, the curvature of both the first and second arc-shaped plates matches the curvature of the segment to be removed.

[0008] Furthermore, the distance between the first arc-shaped plate and the second arc-shaped plate is 45-55 mm greater than the thickness between the outer and inner walls of the segment to be removed, preferably 50 mm.

[0009] Furthermore, the bolt is matched to the size of the mounting hole and the size of the segment connection hole. The bolt passes through the mounting hole and the segment connection hole to fix the segment to be removed inside the segment removal lifting tool.

[0010] Furthermore, the first end of the bolt is provided with an external thread, and the bolt is connected to a movable nut through the external thread; the second end of the bolt is connected to a fixed nut; both the movable nut and the fixed nut are provided with washers, and the washers are provided on the contact surfaces of the movable nut and the fixed nut that contact the tube segment.

[0011] Furthermore, the box structure is a box structure with a cavity, and the connecting structure also includes a reinforcing rib plate, which is disposed inside the box structure with the cavity.

[0012] Furthermore, the reinforcing ribs are provided in multiple forms, preferably five.

[0013] Furthermore, the lifting part is a lifting ring, and there are multiple lifting rings, preferably four.

[0014] Furthermore, both the first arc-shaped plate and the second arc-shaped plate are provided with circumferential reinforcing ribs and longitudinal reinforcing ribs on their outer periphery, and the circumferential reinforcing ribs and the longitudinal reinforcing ribs are interwoven to form a grid-like structure.

[0015] Furthermore, both the first arc-shaped plate and the second arc-shaped plate are provided with multiple circumferential reinforcing ribs on their outer periphery, preferably four.

[0016] Furthermore, both the first arc-shaped plate and the second arc-shaped plate are provided with multiple longitudinal reinforcing ribs on their outer periphery, preferably six.

[0017] Furthermore, the width of the longitudinal stiffeners in the mesh structure formed with the third connecting plate of the connecting structure is greater than the width of the longitudinal stiffeners in the remaining mesh structures.

[0018] Furthermore, the thickness of both the circumferential reinforcing rib and the longitudinal reinforcing rib is 18-22 mm, preferably 20 mm.

[0019] Furthermore, the segment removal lifting device is also equipped with a reinforcing structure.

[0020] Furthermore, the reinforcing structure includes a first diagonal bar, a second diagonal bar, and a vertical bar connected to the first diagonal bar and the second diagonal bar. The first end of the first diagonal bar is disposed on the first arc-shaped plate, the second end of the first diagonal bar is connected to the first end of the vertical bar, the second end of the vertical bar is vertically disposed on the first arc-shaped plate, the first end of the second diagonal bar is connected to the second end of the first diagonal bar and the first end of the vertical bar, and the second end of the second diagonal bar is disposed on the first connecting plate of the connecting structure.

[0021] Furthermore, the reinforcing structure is provided in multiple forms, preferably three.

[0022] Furthermore, the first arc-shaped plate, the second arc-shaped plate, and the connecting structure are integrally formed.

[0023] A second aspect of the present invention provides a method for using a segment removal lifting tool, comprising the following steps:

[0024] a) Fix the segment to be removed inside the segment removal lifting device provided by the present invention, such that the first arc-shaped plate of the segment removal lifting device is attached to the outer wall of the segment to be removed, and the second arc-shaped plate is attached to the inner wall of the segment to be removed;

[0025] b) Connect the crane to the lifting unit and start the crane to lift the segment to be removed.

[0026] Furthermore, the bolt is passed through the mounting hole and the segment connection hole, and the bolt is tightened to connect and fix the segment removal lifting tool to the segment to be removed.

[0027] The present invention has at least the following technical effects through the technical solution provided by the present invention:

[0028] The segment dismantling lifting device provided by this invention has a simple structure and is easy to install and dismantle. It can increase the contact area between the lifting device and the segment to be dismantled, resulting in uniform force distribution. This effectively avoids damage to the segment, improves the integrity and reusability of the dismantled segment, and enhances the safety of the dismantling process. After the crane is connected to the lifting unit, the center of gravity during the lifting process is located within the balance range of the segment dismantling lifting device, making the force distribution more uniform. The segment to be dismantled will not tilt due to instability during the lifting process, ensuring the safety of the construction process and reducing construction risks.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0030] Figure 1 A front perspective view of the segment removal lifting device provided by the present invention;

[0031] Figure 2 A top perspective view of the segment removal lifting device provided by the present invention;

[0032] Figure 3 This is a side view of the segment removal lifting device provided by the present invention;

[0033] Figure 4 for Figure 2 Side view of the reinforced structure in the middle;

[0034] Figure 5 This is a schematic diagram of the bolt structure provided by the present invention;

[0035] Figure 6 A flowchart illustrating the method of using a segment removal lifting device provided by the present invention.

[0036] Figure label:

[0037] 1. First arc-shaped plate; 2. Second arc-shaped plate; 3. Connecting structure; 31. First connecting plate; 32. Second connecting plate; 33. Third connecting plate; 4. Mounting hole; 5. Bolt; 51. External thread; 52. Movable nut; 53. Fixed nut; 54. Washer; 6. Lifting part; 7. Reinforcing structure; 71. First diagonal bar; 72. Second diagonal bar; 73. Vertical bar; 8. Circumferential reinforcing rib; 9. Longitudinal reinforcing rib; 10. Reinforcing rib plate; 11. Box structure with cavity. Detailed Implementation

[0038] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0040] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positions of components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0041] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] Please refer to Figures 1 to 3 , Figure 1 This is a front perspective view of the segment removal lifting device provided by the present invention. Figure 2 This is a top perspective view of the segment removal lifting device provided by the present invention. Figure 3This is a side view of the segment removal lifting device provided by the present invention. The segment removal lifting device includes a first arc-shaped plate 1, a second arc-shaped plate 2, and a connecting structure 3 connected to the first arc-shaped plate 1 and the second arc-shaped plate 2. The first arc-shaped plate 1 and the second arc-shaped plate 2 have the same shape and curvature, and the curvature of both the first arc-shaped plate 1 and the second arc-shaped plate 2 matches the curvature of the segment to be removed (not shown in the figure). The first arc-shaped plate 1 is provided with a lifting part 6 for lifting. The connecting structure 3 for connecting the first arc-shaped plate 1 and the second arc-shaped plate 2 is provided with mounting holes 4 corresponding to the segment connection holes (not shown in the figure) provided on the segment to be removed. Bolts 5 are inserted into the mounting holes 4 for connecting and fixing the segment removal lifting device and the segment to be removed.

[0043] The segment removal lifting device also includes a reinforcing structure 7, which is installed on the first arc plate 1 to increase the deflection and stiffness of the first arc plate 1, thereby increasing the overall strength of the segment removal lifting device.

[0044] In one embodiment, the distance between the first arc-shaped plate 1 and the second arc-shaped plate 2 is 50 mm greater than the thickness between the outer and inner walls of the segment to be removed. Of course, in other embodiments, the space formed between the first arc-shaped plate 1 and the second arc-shaped plate 2 can be adjusted according to the thickness between the outer and inner walls of the segment to be removed, so that the segment to be removed can be accommodated between the first arc-shaped plate 1 and the second arc-shaped plate 2 of the segment removal lifting device provided by the present invention. No limitation is set here. The thickness of both the first arc-shaped plate 1 and the second arc-shaped plate 2 is 20 mm. Of course, in other embodiments, it can also be selected from 18 to 22 mm, including but not limited to this. The first arc-shaped plate 1, the second arc-shaped plate 2, and the connecting structure 3 can be integrally formed. Of course, in other embodiments, they can also be set by welding. No limitation is set here.

[0045] In one embodiment, there are two mounting holes 4, symmetrically arranged on both sides of the connecting structure 3. The mounting holes 4 are provided with bolts 5 for inserting into the segment connection holes to connect and fix the segment removal lifting tool and the segment to be removed. The bolts 5 are matched with the size of the mounting holes 4 and the segment connection holes, so that the bolts 5 pass through the mounting holes 4 and the segment connection holes to connect and fix the segment to be removed and the segment removal lifting tool.

[0046] The structural diagram of the bolt is as follows: Figure 5As shown, the first end of the bolt 5 has an external thread 51, which is connected to a movable nut 52; the second end of the bolt 5 is connected to a fixed nut 53; both the movable nut 52 and the fixed nut 53 are provided with washers 54, which are respectively disposed on the contact surfaces of the movable nut 52 and the fixed nut 53 with the segment to be removed. In this embodiment, the washers 54 are made of rubber. Using rubber can reduce the contact stress between the movable nut 52, the fixed nut 53 and the segment to be removed, thus extending the service life of the segment removal lifting tool of the present invention.

[0047] The connecting structure 3 includes a first connecting plate 31, a second connecting plate 32, and a third connecting plate 33 connected to the first connecting plate 31 and the second connecting plate 32. The first connecting plate 31, the second connecting plate 32, and the third connecting plate 33 form a box structure 11 with a cavity, which serves to fix the first arc-shaped plate 1 and the second arc-shaped plate 2. The first connecting plate 31 and the second connecting plate 32 are identical in shape and size, with dimensions of 400mm in width and 20mm in thickness. The third connecting plate 33 has dimensions of 740mm in width and 20mm in thickness. The first connecting plate 31, the second connecting plate 32, and the third connecting plate 33 can all be made of steel plate. The connecting structure 3 also includes a reinforcing rib plate 10, which is disposed inside the box structure 11 with a cavity, serving to support the box structure 11 with a cavity. The reinforcing rib plate 10 can be made of steel plate, with dimensions of 700mm in length, 400mm in width, and 20mm in thickness. In one embodiment, five reinforcing ribs 10 are evenly spaced within the cavity-shaped box structure 11. Of course, in other embodiments, the size, number, and arrangement of the reinforcing ribs 10 can be determined according to the size of the connecting structure 3.

[0048] In one embodiment, a buffer groove (not shown in the figure) is provided on the first side of the third connecting plate 33 of the connecting structure 3. A buffer pad is provided in the buffer groove to avoid the phenomenon of concentrated stress between the segment removal lifting tool and the segment to be removed, which would cause the segment to be removed to break.

[0049] In one embodiment, the lifting part 6 may be a lifting ring, which may be partially embedded in the first arc-shaped plate 1, including but not limited to this, thereby allowing the crane to pass through the lifting ring. Figure 2 As shown, the lifting section 6 consists of lifting rings located at the four corners of the first arc-shaped plate 1. These four lifting sections 6 are symmetrically arranged. The crane is connected to the lifting section 6. During the lifting process, the center of gravity is located within the balance range of the segment removal lifting device. As a result, when the segment to be removed is lifted, the force on the segment removal lifting device is more even. The segment to be removed will not tilt due to instability of the center of gravity during the lifting process, thus ensuring the stability of the center of gravity when the segment to be removed is lifted.

[0050] Multiple circumferential reinforcing ribs 8 and longitudinal reinforcing ribs 9 are provided on the outer periphery of both the first arc-shaped plate 1 and the second arc-shaped plate 2. The circumferential reinforcing ribs 8 and longitudinal reinforcing ribs 9 interweave to form a grid structure, reinforcing both the first arc-shaped plate 1 and the second arc-shaped plate 2 and further improving the overall strength of the segment removal lifting device. In one embodiment, four circumferential reinforcing ribs 8 and six longitudinal reinforcing ribs 9 are provided on the outer periphery of both the first arc-shaped plate 1 and the second arc-shaped plate 2, forming twenty grid structures on the outer periphery of each. The dimensions of the circumferential reinforcing ribs 8 can be 150mm wide and 20mm thick, with a spacing of 300mm between them. The dimensions of the longitudinal reinforcing ribs 9 can also be 150mm wide and 20mm thick, with a spacing of 400mm between them. Of course, in other embodiments, the number, size, and spacing of the circumferential reinforcing ribs 8 and the longitudinal reinforcing ribs 9 can be set according to the area of ​​the first arc-shaped plate 1 and the second arc-shaped plate 2, and no limitation is set here. Figures 1 to 3 As shown, the circumferential reinforcing ribs 8 and longitudinal reinforcing ribs 9 arranged on the outer periphery of the second arc-shaped plate 2 form twenty grid-like structures. In these structures, the width of the longitudinal reinforcing ribs 9 in the grid-like structure formed with the third connecting plate 33 of the connecting structure 3 is greater than the width of the longitudinal reinforcing ribs 9 in the other grid-like structures. Specifically, the width of the longitudinal reinforcing ribs 9 in the five grid-like structures formed with the third connecting plate 33 of the connecting structure 3 can be 200 mm, while the width of the longitudinal reinforcing ribs 9 in the other grid-like structures can be 150 mm. By setting the width of the longitudinal reinforcing ribs 9 in the grid-like structure formed with the third connecting plate 33 of the connecting structure 3 to be greater than the width of the longitudinal reinforcing ribs 9 in the other grid-like structures, i.e., by increasing the contact surface between the longitudinal reinforcing ribs 9 and the third connecting plate 33 of the connecting structure 3, the overall strength of the segment removal lifting device provided by this invention is further improved. In the circumferential reinforcing ribs 8 on the outer periphery of the second arc-shaped plate 2, the spacing between the circumferential reinforcing ribs 8 forming a grid structure with the third connecting plate 33 of the connecting structure 3 and the third connecting plate 33 can be 370mm. In the circumferential reinforcing ribs 8 on the outer periphery of the first arc-shaped plate 1, the spacing between the circumferential reinforcing ribs 8 forming a grid structure with the third connecting plate 33 of the connecting structure 3 and the third connecting plate 33 of the connecting structure 3 can be 300mm. It should be noted that in other embodiments, the thickness of the circumferential reinforcing ribs 8 and the longitudinal reinforcing ribs 9 can also be selected from 18 to 22mm, including but not limited to this; the material selection can be made of metal materials such as stiffening plates and stainless steel, without any restrictions.

[0051] like Figures 2 to 4As shown, in one embodiment, there are three reinforcing structures 7. Each reinforcing structure 7 includes a first diagonal rod 71, a second diagonal rod 72, and a vertical rod 73 connected to the first diagonal rod 71 and the second diagonal rod 72. The first end of the first diagonal rod 71 is disposed on the first arc-shaped plate 1, and the angle formed between the first end of the first diagonal rod 71 and the first arc-shaped plate 1 can be a first angle, for example, 30 degrees. The second end of the first diagonal rod 71 is connected to the first end of the vertical rod 73, and the angle formed between the second end of the first diagonal rod 71 and the first end of the vertical rod 73 can be a second angle, for example, 60 degrees. The second end of the vertical rod 73 is vertically disposed on the first arc-shaped plate 1. The first end of the second diagonal rod 72 is connected to the second end of the first diagonal rod 71 and the first end of the vertical rod 73, and the angle formed between the first end of the second diagonal rod 72 and the second end of the first diagonal rod 71 can be a third angle, for example, 110 degrees. The angle formed between the first end of the second diagonal rod 72 and the first end of the vertical rod 73 can be a fourth angle, for example, 50 degrees. The second end of the second diagonal rod 72 is located on the first connecting plate 31 of the connecting structure 3. The angle between the second end of the second diagonal rod 72 and the first connecting plate 31 of the connecting structure 3 can be a fifth angle, for example, 40 degrees. The ratio of the first angle to the second angle can be 1:2, and the ratio of the fourth angle to the fifth angle can be 5:4. This arrangement allows for more even force distribution on the segment removal lifting device. Furthermore, placing the first end of the first diagonal rod 71 on the first arc-shaped plate 1 and the second end of the second diagonal rod 72 on the first connecting plate 31 of the connecting structure 3 reduces the overall force and deformation during segment removal, significantly improving safety. Of course, the reinforcing structure 7 can also be other structures, and the number is not limited to three; no restriction is set here.

[0052] This invention provides a segment dismantling lifting tool. By matching the curvature of the first arc-shaped plate 1 and the second arc-shaped plate 2 with the curvature of the segment to be dismantled, the contact area between the lifting tool and the segment is increased, resulting in uniform force distribution. This effectively prevents damage to the segment and improves the integrity and reusability of the dismantled segment. Simultaneously, the connecting structure 3 is designed as a box structure to fix the first arc-shaped plate 1 and the second arc-shaped plate 2, ensuring safety during construction and reducing construction risks. Using the segment dismantling lifting tool provided by this invention for segment dismantling in the construction field offers simple manufacturing processes, safe and convenient use, and unexpected technical benefits in terms of both economic efficiency and safety performance.

[0053] This invention also provides a method for using a segment removal lifting tool, such as... Figure 6The diagram shows a flowchart of a method for using a segment removal lifting device provided by the present invention. The method for using the segment removal lifting device provided by the present invention includes the following steps: S1: Fixing the segment to be removed inside the segment removal lifting device provided by the present invention, such that the first arc-shaped plate 1 of the lifting device is attached to the outer wall of the segment to be removed, and the second arc-shaped plate 2 is attached to the inner wall of the segment to be removed; S2: Finally, connecting the crane to the lifting unit 6 and starting the crane to lift the segment to be removed. After the crane is connected to the lifting unit, the center of gravity during the lifting process is located within the balance range of the segment removal lifting device, making the force on the lifting device more even. This prevents the segment to be removed from tilting due to instability during lifting, ensuring construction safety and reducing construction risks. Using the segment removal lifting tool provided by this invention is simple and safe. It can increase the contact area between the segment removal lifting tool and the segment to be removed, so that the force is evenly distributed, effectively avoid the damage to the segment to be removed, improve the integrity and reusability of the segment after removal, and increase the safety guarantee of the removal construction.

[0054] Step S1 also includes passing the bolt 5 through the mounting hole and the segment connection hole on the segment to be removed, and tightening the bolt 5 to connect and fix the segment removal lifting tool to the segment to be removed. During disassembly, simply loosen the movable nut 52 and remove the bolt 5 to complete the disassembly of the segment to be removed. The operation is very simple and convenient, effectively preventing damage to the segment to be removed due to collision during hoisting.

[0055] It should be noted that the bolt 5 can be used either by first passing it through the mounting hole 4 and then through the segment connection hole on the segment to be removed, or by first passing it through the segment connection hole on the segment to be removed and then through the mounting hole 4. There is no restriction on this.

[0056] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0058] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A segment removal lifting tool, characterized in that, The device includes a first arc-shaped plate, a second arc-shaped plate, and a connecting structure connected to the first and second arc-shaped plates. The connecting structure includes a first connecting plate, a second connecting plate, and a third connecting plate connected to the first and second connecting plates. The first, second, and third connecting plates form a box structure. The first arc-shaped plate has a lifting part, and the third connecting plate of the connecting structure has mounting holes. These mounting holes correspond to the segment connection holes on the segment to be removed. Bolts for connecting and fixing the segment removal lifting device and the segment to be removed are inserted into the segment connection holes in the mounting holes. The first and second arc-shaped plates have the same shape and curvature, and the curvature of both the first and second arc-shaped plates matches the curvature of the segment to be removed. The first connecting plate and the second connecting plate are identical in shape and size. The box structure is a box structure with a cavity, and the connecting structure further includes reinforcing ribs. The reinforcing ribs are disposed inside the box structure with a cavity, and the reinforcing ribs are evenly spaced within the box structure with a cavity. The lifting component is a lifting ring, which is partially embedded in the four corners of the first arc-shaped plate. The lifting components are symmetrically arranged, and the crane is connected to the lifting component. The mounting holes are two in number, symmetrically arranged on both sides of the connecting structure. The segment removal lifting device further includes a reinforcing structure, which is disposed on the first arc-shaped plate.

2. The segment removal lifting tool as described in claim 1, characterized in that, Both the first arc-shaped plate and the second arc-shaped plate are provided with circumferential reinforcing ribs and longitudinal reinforcing ribs on their outer periphery, and the circumferential reinforcing ribs and the longitudinal reinforcing ribs are interwoven to form a grid-like structure.

3. The segment removal lifting tool as described in claim 2, characterized in that, The width of the longitudinal stiffeners in the grid structure formed with the third connecting plate of the connecting structure is greater than the width of the longitudinal stiffeners in the other grid structures.

4. The segment removal lifting tool as described in claim 1, characterized in that, The reinforcing structure includes a first diagonal bar, a second diagonal bar, and a vertical bar connected to the first diagonal bar and the second diagonal bar. The first end of the first diagonal bar is disposed on the first arc-shaped plate, the second end of the first diagonal bar is connected to the first end of the vertical bar, the second end of the vertical bar is vertically disposed on the first arc-shaped plate, the first end of the second diagonal bar is connected to the second end of the first diagonal bar and the first end of the vertical bar, and the second end of the second diagonal bar is disposed on the first connecting plate of the connecting structure.

5. The segment removal lifting tool as described in claim 1, characterized in that, The first end of the bolt is provided with an external thread, and the bolt is connected to a movable nut through the external thread; the second end of the bolt is connected to a fixed nut; both the movable nut and the fixed nut are provided with washers, and the washers are provided on the contact surfaces of the movable nut and the fixed nut with the tube segment.

6. A method for using a segment removal lifting tool, characterized in that, Includes the following steps: a) Fix the segment to be removed inside the segment removal lifting device according to claim 1, such that the first arc-shaped plate of the segment removal lifting device is attached to the outer wall of the segment to be removed, and the second arc-shaped plate is attached to the inner wall of the segment to be removed; b) Connect the crane to the lifting unit and start the crane to lift the segment to be removed.

7. The method of use according to claim 6, characterized in that, Step a) includes: passing the bolt through the mounting hole and the segment connection hole, and tightening the bolt to connect and fix the segment removal lifting tool to the segment to be removed.

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