A shield segment adaptive vibration reduction and impact resistance device and shield segment installation structure

Abstract

The present invention relates to the technical field of shield segment assembly, and specifically to a shield segment adaptive vibration reduction and impact resistance device and a shield segment installation structure. The present invention comprises an arc-shaped shield segment and an impact resistance plate, wherein the surface of the arc-shaped shield segment is provided with a plurality of movable grooves, the movable grooves are provided with vibration reduction and impact resistance devices, and the impact resistance plate is connected to the arc-shaped shield segment through the vibration reduction and impact resistance devices; a second plug-in plate is fixedly connected to one side of the arc-shaped shield segment, and a second slot matching the second plug-in plate is provided on the other side of the arc-shaped shield segment; the present invention provides a second plug-in plate on the side wall of the arc-shaped shield segment, and provides a movable baffle and a second limiting plate in the second slot on the other side. After the second plug-in plate is fully inserted, the second limiting plate will be inserted into the second plug-in plate, thereby fixing it, so that the shield segments installed side by side can also be fixed to each other, thereby making the entire shield segment more stable.

Description

Technical Field

[0001] The invention relates to the technical field of shield segment assembly, in particular to a shield segment self-adaptive vibration reduction and impact resistance device and a shield segment installation structure. Background Art

[0002] In recent years, shield tunnels have developed rapidly as the main form of urban rail transit. The health and safety of tunnel structures during operation has become a very important issue. Shield segments are the main components of shield tunnels. The tunnel lining formed by connecting shield segments with segment bolts is the innermost barrier of urban subway shield tunnels and the only guarantee for maintaining the integrity of tunnel structure functions and preventing damage. It plays the role of isolating and buffering the vibration and impact caused by soil pressure, groundwater pressure and alternating loads during train operation.

[0003] In the prior art, for example, application No. 2020105838487 discloses a shield segment adaptive vibration damping and anti-impact device and a shield segment mounting structure, which specifically includes a plurality of shield segments that can be combined to form a cylindrical structure and segment bolts for fastening adjacent shield segments. After the two ends of each segment bolt pass through the bolt through-hole of the corresponding shield segment adaptive vibration damping and anti-impact device, the end face of the segment connecting ring close to the device mounting groove can abut against the bottom of the device mounting groove to lock the adjacent shield segments.

[0004] By connecting several segment bolts, each shield segment can be fixed into a cylindrical structure; by setting up the shield segment adaptive vibration reduction and impact resistance device, it can play an excellent vibration reduction and impact resistance role on the shield segments and segment bolts, greatly extending the fatigue life of the shield segments and segment bolts.

[0005] Currently, shield segments are used in tunnels, usually in large quantities. In the application published with application number 2020105838487, two adjacent shield segments are connected only by fixing bolts, while the shield segments in front and behind have no connection structure. This results in a lack of support between the two adjacent circles of shield segments, which are independent of each other, making the shield segments of the entire tunnel unstable. Summary of the Invention

[0006] The object of the present invention is to provide a shield segment adaptive vibration reduction and impact resistance device and a shield segment installation structure to solve the problems raised in the above background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A shield segment installation structure includes a curved shield segment and an impact-resistant plate. The surface of the curved shield segment is provided with a plurality of movable grooves, and a vibration-damping and impact-resistant device is provided in the movable groove. The impact-resistant plate is connected to the curved shield segment via the vibration-damping and impact-resistant device.

[0009] One end of the arc-shaped shield segment is fixedly connected to a first plug plate, the other end of the arc-shaped shield segment is provided with a first slot, a first limiting plate is provided in the first slot, and the first plug plate is connected to the first limiting plate by a buckle, one side of the arc-shaped shield segment is fixedly connected to a second plug plate, the other side of the arc-shaped shield segment is provided with a second slot matching the second plug plate, and a plurality of positioning bolts are provided on the surface of the arc-shaped shield segment.

[0010] Furthermore, the vibration-damping and impact-resistant device includes a sliding rod with the same curvature as the curved shield segment, the sliding rod is fixed in a movable groove, both ends of the sliding rod are movably connected to a movable slider, the top of the movable slider is rotatably connected to a movable rod, and the top of the movable rod is connected to the impact-resistant plate, the movable sliders are away from each other on the side and the surface of the sliding rod is provided with a reset spring, and the movable slider is connected to the inner wall of the movable groove through the reset spring.

[0011] Furthermore, the top end of the movable slider is fixedly connected to a first mounting block, a first rotating shaft is provided on the surface of the first mounting block, and the bottom end of the movable rod is rotatably connected to the first mounting block through the first rotating shaft, the bottom end of the impact-resistant plate is fixedly connected to a second mounting block, a second rotating shaft is provided on the surface of the second mounting block, and the top end of the movable rod is rotatably connected to the second mounting block through the second rotating shaft.

[0012] Furthermore, the first limiting plate includes a plurality of first insertion rods, a first limiting spring is provided at the rear end of the first insertion rod, and the first insertion rod is connected to the bottom of the first slot through the first limiting spring, and a first limiting groove is formed on the surface of the first insertion plate to match the first insertion rod, and the rear side of the first limiting groove is an inclined surface;

[0013] The bottom of the side wall of the first plugging plate is fixedly connected with a slide rail, the inner side wall of the first slot is provided with a slide groove matched with the slide rail, and the first plugging plate is slidably connected to the first slot through the slide rail.

[0014] Furthermore, the top of the first insertion rod is fixedly connected to a connecting rod, the top of the connecting rod is fixedly connected to a fixed rod, and all the first insertion rods are connected to the fixed rod through the connecting rod, and a first protrusion is fixedly connected to the center of the surface of the fixed rod.

[0015] Furthermore, a movable baffle is provided in the second slot, and the movable baffle is movably connected to the bottom of the second slot, the second plug-in plate is connected to the movable baffle and pushes the movable baffle to move inward, the inner side wall of the second slot is movably connected to a second limiting plate, and the side wall of the second plug-in plate is provided with a second limiting groove that cooperates with the second limiting plate, and the second plug-in plate is fixedly connected to the second slot through the second limiting plate.

[0016] Furthermore, a receiving groove is provided in the second slot, a compression spring is provided in the receiving groove, a telescopic push rod is provided at one end of the compression spring, the telescopic push rod moves in the receiving groove through the compression spring, and the end of the telescopic push rod away from the compression spring is connected to the movable baffle.

[0017] Furthermore, the second limiting plate includes a second plug rod, a second limiting spring is provided at the rear end of the second plug rod, and the second plug rod moves within the side wall of the second slot through the second limiting spring, and a second protrusion is fixedly connected to the top of the second plug rod, and the second protrusion extends upward outside the arc-shaped shield segment.

[0018] Furthermore, the positioning bolt includes a threaded rod, a fixed sleeve is provided on the surface of the threaded rod, and the threaded rod is threadedly connected to the fixed sleeve, a movable ring is provided at the top of the threaded rod, a groove is provided at the bottom of the threaded rod for matching with the movable ring, and the movable ring is rotatably connected to the bottom of the threaded rod, and a limiting mechanism for fixing is provided between the movable ring and the fixed sleeve.

[0019] Furthermore, the limiting mechanism includes a first limiting rod and a second limiting rod, a roller is provided between the first limiting rod and the second limiting rod, and the first limiting rod is rotatably connected to the second limiting rod through the roller, the bottom end of the fixed sleeve is fixedly connected to a first fixing plate, the surface of the first fixing plate is provided with a first fixing shaft, and the end of the first limiting rod away from the second limiting rod is rotatably connected to the first fixing plate through the first fixing shaft, the top of the movable ring is fixedly connected to a second fixing plate, the surface of the second fixing plate is provided with a second fixing shaft, and the end of the second limiting rod away from the first limiting rod is rotatably connected to the second fixing plate through the second fixed shaft.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention provides a first inserting plate at one end of the arc-shaped shield segment and a first limiting plate connected thereto by a snap fit at the other end. When the first inserting plate is inserted along the first slot, it presses the first limiting plate inward. When fully inserted, the arc-shaped shield segment can be prevented from rocking left and right. At the same time, the cooperation between the slide groove and the slide rail can also effectively prevent the shield segment from rocking forward and backward, thereby maintaining stability.

[0022] 2. The present invention provides a second insert plate on the side wall of the arc-shaped shield segment, and provides a movable baffle and a second limit plate in the second slot on the other side. Initially, the movable baffle extends outward, thereby blocking the second limit plate, so that the second limit plate is always located in the side wall of the second slot. When the second insert plate is inserted, the second insert plate pushes the movable baffle inward. After it is fully inserted, the second limit plate is inserted into the second insert plate, thereby fixing it. This allows the shield segments installed side by side to be fixed to each other, making the entire shield segment more stable.

[0023] 3. The present invention is provided with a screw positioning bolt. After the shield segment is attached to the inner wall of the tunnel, the positioning bolt can be inserted into the inner wall of the tunnel, and then the threaded rod can be rotated to open the limit mechanism to ensure the fixation of a single shield segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a left side view of the curved shield segment of the present invention;

[0027] Figure 3 This is a right side view of the curved shield segment of the present invention;

[0028] Figure 4 It is a schematic structural diagram of the vibration reduction and anti-impact device of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the first plugboard of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the first limiting plate of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the movable baffle of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the positioning bolt of the present invention;

[0033] Figure 9 yes Figure 8 Enlarged schematic diagram of point A in the middle.

[0034] The reference numerals in the figures are as follows:

[0035] 1. Arc shield segment; 11. Movable slot; 12. First slot; 121. Slide slot; 13. Second slot; 2. Anti-impact plate; 3. Vibration reduction and anti-impact device; 31. Slide rod; 32. Moving slider; 33. Movable rod; 34. Return spring; 35. First mounting block; 36. First rotating shaft; 37. Second mounting block; 38. Second rotating shaft; 4. First insert plate; 41. First limiting slot; 42. Slide rail; 5. First limiting plate; 51. First insert rod; 52. First limiting spring; 53. Connecting rod; 54. Fixed rod; 55. First protrusion; 6. Second plug plate; 61. Second limiting groove; 7. Movable baffle; 71. Compression spring; 72. Telescopic push rod; 8. Second limiting plate; 81. Second plug rod; 82. Second limiting spring; 83. Second protrusion; 9. Positioning bolt; 91. Threaded rod; 92. Fixed sleeve; 93. Movable ring; 94. Limiting mechanism; 941. First limiting rod; 942. Second limiting rod; 943. Roller; 944. First fixing plate; 945. First fixed axis; 946. Second fixing plate; 947. Second fixed axis. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] Reference Figure 1 and Figure 2 As shown, a shield segment installation structure includes a plurality of identical curved shield segments 1, wherein the surface of the curved shield segment 1 is provided with an anti-impact plate 2, and the surface of the curved shield segment 1 is provided with a plurality of movable grooves 11, and the movable grooves 11 are further provided with a vibration-damping and anti-impact device 3, and the anti-impact plate 2 is connected to the curved shield segment 1 through the vibration-damping and anti-impact device 3;

[0038] One end of the curved shield segment 1 is fixedly connected to a first plug-in plate 4, and the other end of the curved shield segment 1 is provided with a first slot 12, and a first limiting plate 5 is provided in the first slot 12, and the first plug-in plate 4 is connected to the first limiting plate 5 by a snap, so that when installing, one can be placed first, and then the first plug-in plate 4 on the next curved shield segment 1 is inserted along the previous first slot 12, one connected to another, a closed loop can be formed, and each curved shield segment 1 can be connected to each other to form a stable structure, and one side of the curved shield segment 1 It is fixedly connected with a second plug plate 6, and a second slot 13 that cooperates with the second plug plate 6 is opened on the other side of the arc shield segment 1. After completing a circle, it is necessary to continue to move forward. At this time, it is necessary to lay it next to the first circle, so that the second plug plate 6 on the newly laid arc shield segment 1 can be inserted into the second slot 13 for fixation, so that the front and rear circles can be connected and fixed. A plurality of positioning bolts 9 are provided on the surface of the arc shield segment 1, and the arc shield segment 1 is mainly installed on the inner wall of the tunnel through the positioning bolts 9.

[0039] Reference Figure 4 As shown, the present application provides an adaptive vibration reduction and impact resistance device for shield segments, which specifically includes a slide rod 31 with the same curvature as the curved shield segment 1, the slide rod 31 is fixed in the movable groove 11, and both ends of the slide rod 31 are movably connected to a movable slider 32, the top of the movable slider 32 is rotatably connected to a movable rod 33, and the top of the movable rod 33 is connected to the impact resistance plate 2, the movable sliders 32 are away from each other on one side and the surface of the slide rod 31 is provided with a reset spring 34, and the movable slider 32 is connected to the inner wall of the movable groove 11 through the reset spring 34.

[0040] The top end of the movable slider 32 is fixedly connected to a first mounting block 35, a first rotating shaft 36 is provided on the surface of the first mounting block 35, and the bottom end of the movable rod 33 is rotatably connected to the first mounting block 35 through the first rotating shaft 36, the bottom end of the anti-impact plate 2 is fixedly connected to a second mounting block 37, a second rotating shaft 38 is provided on the surface of the second mounting block 37, and the top end of the movable rod 33 is rotatably connected to the second mounting block 37 through the second rotating shaft 38. By distributing multiple vibration-damping and anti-impact devices 3 on the arc-shaped shield segment 1, multi-point support can be achieved, and after the anti-impact plate 2 is subjected to pressure, the vibration-damping and anti-impact device 3 thereat is used to reduce the pressure of the anti-impact plate 2.

[0041] Reference Figure 5 and Figure 6As shown, the first limiting plate 5 includes a plurality of first plug rods 51, and a first limiting spring 52 is provided at the rear end of the first plug rod 51, and the first plug rod 51 is connected to the bottom of the first slot 12 through the first limiting spring 52. After the first plug rod 51 is subjected to force, it will shrink inward, and the surface of the first plug plate 4 is provided with a first limiting groove 41 that matches the first plug rod 51, and the rear side of the first limiting groove 41 is an inclined surface. After the first plug plate 4 is inserted, the first plug plate 4 will squeeze the first plug rod 51 inward, and the outermost first plug rod 51 is inserted into the first first limiting groove. After the first plate 4 is inserted into the first limiting slot 41, the first rod 51 is pushed inwardly. At this time, the first rod 51 can move along the inclined surface on the rear side of the first limiting slot 41 and be squeezed again until the entire first plugboard 4 is inserted into the first slot 12. In this way, the first plugboard 4 and the first limiting plate 5 can be snap-fitted and connected to each other to form a limit. At the same time, in order to facilitate the insertion of the first plugboard 4, a notch can also be provided at the front end of the first rod 51. In this way, when the first plugboard 4 is inserted, it can move along the notch, thereby squeezing the first rod 51.

[0042] The bottom of the side wall of the first plugging plate 4 is fixedly connected to a slide rail 42, and the inner side wall of the first slot 12 is provided with a slide groove 121 that cooperates with the slide rail 42, and the first plugging plate 4 is slidably connected to the first slot 12 through the slide rail 42. When the first plugging plate 4 is inserted, the slide rail 42 on the first plugging plate 4 can be inserted along the slide groove 121, so that two adjacent arc-shaped shield segments 1 can be fixed adjacent to each other.

[0043] The top of the first insertion rod 51 is fixedly connected to a connecting rod 53, and the top of the connecting rod 53 is fixedly connected to a fixing rod 54, and all the first insertion rods 51 are connected to the fixing rod 54 through the connecting rod 53. The center of the surface of the fixing rod 54 is fixedly connected to a first protrusion 55, so that when disassembling later, the first insertion rod 51 can be driven to move inward by pushing the first protrusion 55, so that the first insertion rod 51 can be disengaged from the first limiting groove 41 on the first insertion plate 4.

[0044] Reference Figure 2 As shown, a movable baffle 7 is provided in the second slot 13, and the movable baffle 7 is movably connected to the bottom of the second slot 13, the second plug-in plate 6 is connected to the movable baffle 7 and pushes the movable baffle 7 to move inward, and the inner side wall of the second slot 13 is movably connected to a second limiting plate 8. At the beginning, the movable baffle 7 is used to block the second limiting plate 8, and the side wall of the second plug-in plate 6 is provided with a second limiting groove 61 that cooperates with the second limiting plate 8. The second plug-in plate 6 is fixedly connected to the second slot 13 through the second limiting plate 8.

[0045] Reference Figure 3 and Figure 7As shown, a receiving groove is also provided in the second slot 13, and a compression spring 71 is provided in the receiving groove. A telescopic push rod 72 is provided at one end of the compression spring 71. The telescopic push rod 72 moves in the receiving groove through the compression spring 71. The end of the telescopic push rod 72 away from the compression spring 71 is connected to the movable baffle 7. After the second plug-in plate 6 is inserted, the second plug-in plate 6 can push the movable baffle 7 inward to retract.

[0046] The second limiting plate 8 includes a second plug rod 81, and a second limiting spring 82 is provided at the rear end of the second plug rod 81, and the second plug rod 81 moves in the side wall of the second slot 13 through the second limiting spring 82. At the beginning, the second limiting spring 82 is in a compressed state. After the movable baffle 7 is pushed by the second plug plate 6, after the movable baffle 7 is completely moved in, the second limiting groove 61 on the second plug plate 6 will be aligned with the second plug rod 81. At this time, the second plug rod 81 will be driven by the elastic force of the second limiting spring 82 to insert the second plug rod 81 into the second limiting groove 61. The top of the second plug rod 81 is fixedly connected to a second protrusion 83, and the second protrusion 83 extends upward from the arc-shaped shield segment 1. After disassembly in the later stage, the second plug rod 81 can also be disengaged from the second limiting groove 61 by pushing the second protrusion 83.

[0047] Reference Figure 8 As shown, the positioning bolt 9 includes a threaded rod 91, the surface of the threaded rod 91 is sleeved with a fixed sleeve 92, and the threaded rod 91 is threadedly connected to the fixed sleeve 92, and a movable ring 93 is provided on the top of the threaded rod 91, and a groove matching the movable ring 93 is provided at the bottom of the threaded rod 91, and the movable ring 93 is rotatably connected to the bottom of the threaded rod 91, and a limiting mechanism 94 for fixing is provided between the movable ring 93 and the fixed sleeve 92. After the arc shield segment 1 is placed, the positioning bolt 9 can be inserted into the inner wall of the tunnel, and the arc shield segment 1 can be fixed by the positioning bolt 9.

[0048] Reference Figure 9As shown, the limiting mechanism 94 includes a first limiting rod 941 and a second limiting rod 942, a roller 943 is provided between the first limiting rod 941 and the second limiting rod 942, and the first limiting rod 941 is rotatably connected to the second limiting rod 942 through the roller 943, the bottom end of the fixed sleeve 92 is fixedly connected to a first fixing plate 944, the surface of the first fixing plate 944 is provided with a first fixing shaft 945, and the end of the first limiting rod 941 away from the second limiting rod 942 is rotatably connected to the first fixing plate 944 through the first fixing shaft 945, and the top of the movable ring 93 is fixedly connected to the first fixing plate 944. Second fixing plate 946, a second fixing shaft 947 is provided on the surface of the second fixing plate 946, and the end of the second limiting rod 942 away from the first limiting rod 941 is rotatably connected to the second fixing plate 946 through the second fixing shaft 947. After inserting the arc-shaped shield segment 1, the threaded rod 91 can be rotated outward, and the threaded rod 91 will drive the movable ring 93 to move upward, thereby allowing the first limiting rod 941 and the second limiting rod 942 to deflect, so that the connection between the first limiting rod 941 and the second limiting rod 942 is opened outward, thereby fixing the positioning bolt 9 on the inner wall of the tunnel.

[0049] The working principle of the present invention is as follows: when installing the curved shield segment 1, first place the first curved shield segment 1 on the inner wall of the tunnel, and then fix the curved shield segment 1 by the positioning bolt 9. First, fully insert the positioning bolt 9 into the inner wall of the tunnel, and then rotate the threaded rod 91 outward. The threaded rod 91 drives the movable ring 93 to move outward, so that the first limiting rod 941 and the second limiting rod 942 can be deflected, so that the two limiting rods can be opened outward, and then the following curved shield segment 1 is installed, so that the first plug plate 4 at one end of the next curved shield segment 1 is installed. Insert along the first slot 12 and let the slide rail 42 slide along the slide groove 121. At this time, the first plug plate 4 can squeeze the first plug rod 51 inward, allowing the first plug rod 51 to be inserted into the first limiting groove 41 until it is completely enclosed into a circular ring. Then, install the second circle of arc-shaped shield segments 1, insert the second plug plate 6 on the second circle of arc-shaped shield segments 1 along the second slot 13, let the second plug plate 6 push the movable baffle 7, let the movable baffle 7 retract inward, and let the second plug rod 81 be inserted into the second limiting groove 61, so that the front and rear circles of the arc-shaped shield segments 1 can be fixedly connected.

[0050] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A shield segment installation structure, comprising a curved shield segment (1) and an impact-resistant plate (2), characterized in that: The surface of the arc-shaped shield segment (1) is provided with a plurality of movable grooves (11), a vibration-damping and anti-impact device (3) is provided in the movable groove (11), and the anti-impact plate (2) is connected to the arc-shaped shield segment (1) via the vibration-damping and anti-impact device (3); One end of the arc-shaped shield segment (1) is fixedly connected to a first plug plate (4), the other end of the arc-shaped shield segment (1) is provided with a first slot (12), a first limit plate (5) is provided in the first slot (12), and the first plug plate (4) is snap-connected to the first limit plate (5), one side of the arc-shaped shield segment (1) is fixedly connected to a second plug plate (6), the other side of the arc-shaped shield segment (1) is provided with a second slot (13) matched with the second plug plate (6), and a plurality of positioning bolts (9) are provided on the surface of the arc-shaped shield segment (1); The vibration-damping and impact-resistant device (3) includes a slide bar (31) having the same curvature as the arc-shaped shield segment (1), the slide bar (31) is fixed in the movable groove (11), both ends of the slide bar (31) are movably connected to a movable slider (32), the top of the movable slider (32) is rotatably connected to a movable bar (33), and the top of the movable bar (33) is connected to the impact-resistant plate (2), a return spring (34) is provided on the side of the movable slider (32) away from each other, and the return spring (34) is sleeved on the surface of the slide bar (31), and the movable slider (32) is connected to the inner wall of the movable groove (11) through the return spring (34); The top end of the movable slider (32) is fixedly connected to a first mounting block (35), a first rotating shaft (36) is provided on the surface of the first mounting block (35), and the bottom end of the movable rod (33) is rotatably connected to the first mounting block (35) via the first rotating shaft (36), the bottom end of the impact-resistant plate (2) is fixedly connected to a second mounting block (37), a second rotating shaft (38) is provided on the surface of the second mounting block (37), and the top end of the movable rod (33) is rotatably connected to the second mounting block (37) via the second rotating shaft (38); The first limiting plate (5) includes a plurality of first insertion rods (51), a first limiting spring (52) is provided at the rear end of the first insertion rod (51), and the first insertion rod (51) is connected to the bottom of the first slot (12) through the first limiting spring (52), and a first limiting groove (41) matching the first insertion rod (51) is provided on the surface of the first insertion plate (4), and the rear side of the first limiting groove (41) is an inclined surface; The bottom of the side wall of the first plug plate (4) is fixedly connected to a slide rail (42), the inner side wall of the first slot (12) is provided with a slide groove (121) that matches the slide rail (42), and the first plug plate (4) is slidably connected to the first slot (12) via the slide rail (42).

2. The shield segment installation structure according to claim 1, characterized in that: The top of the first insertion rod (51) is fixedly connected to a connecting rod (53), the top of the connecting rod (53) is fixedly connected to a fixing rod (54), and all the first insertion rods (51) are connected to the fixing rod (54) through the connecting rod (53), and the center of the surface of the fixing rod (54) is fixedly connected to a first protrusion (55).

3. The shield segment installation structure according to claim 1, characterized in that: A movable baffle (7) is provided in the second slot (13), and the movable baffle (7) is movably connected to the bottom of the second slot (13). The second plug-in plate (6) is connected to the movable baffle (7) and pushes the movable baffle (7) to move inward. The inner side wall of the second slot (13) is movably connected to a second limiting plate (8). The side wall of the second plug-in plate (6) is provided with a second limiting groove (61) that matches the second limiting plate (8). The second plug-in plate (6) is fixedly connected to the second slot (13) through the second limiting plate (8).

4. The shield segment installation structure according to claim 3, characterized in that: A receiving groove is further provided in the second slot (13), wherein a compression spring (71) is provided in the receiving groove, and a telescopic push rod (72) is provided at one end of the compression spring (71). The telescopic push rod (72) moves in the receiving groove through the compression spring (71), and the end of the telescopic push rod (72) away from the compression spring (71) is connected to the movable baffle (7).

5. The shield segment installation structure according to claim 3, characterized in that: The second limiting plate (8) includes a second insertion rod (81), a second limiting spring (82) is provided at the rear end of the second insertion rod (81), and the second insertion rod (81) moves within the side wall of the second slot (13) through the second limiting spring (82), and a second protrusion (83) is fixedly connected to the top of the second insertion rod (81), and the second protrusion (83) extends upward outside the arc-shaped shield segment (1).

6. The shield segment installation structure according to claim 1, characterized in that: The positioning bolt (9) includes a threaded rod (91), a fixed sleeve (92) is sleeved on the surface of the threaded rod (91), and the threaded rod (91) and the fixed sleeve (92) are threadedly connected, a movable ring (93) is provided on the top of the threaded rod (91), a groove matching the movable ring (93) is provided on the bottom of the threaded rod (91), and the movable ring (93) is rotatably connected to the bottom of the threaded rod (91), and a limiting mechanism (94) for fixing is provided between the movable ring (93) and the fixed sleeve (92).

7. The shield segment installation structure according to claim 6, characterized in that: The limiting mechanism (94) includes a first limiting rod (941) and a second limiting rod (942), a roller (943) is provided between the first limiting rod (941) and the second limiting rod (942), and the first limiting rod (941) is rotatably connected to the second limiting rod (942) via the roller (943), the bottom end of the fixed sleeve (92) is fixedly connected to a first fixing plate (944), the surface of the first fixing plate (944) is provided with a first fixed shaft (945), and the first fixing plate (944) is fixedly connected to the bottom end of the fixed sleeve (92), and the first fixing plate (944) is fixedly connected to the bottom end of the fixed sleeve (92), and the first fixing shaft (945) is provided on the surface of the fixed sleeve (944). One end of a limiting rod (941) away from the second limiting rod (942) is rotatably connected to the first fixing plate (944) via a first fixed shaft (945), the top of the movable ring (93) is fixedly connected to the second fixing plate (946), a second fixed shaft (947) is provided on the surface of the second fixing plate (946), and one end of the second limiting rod (942) away from the first limiting rod (941) is rotatably connected to the second fixing plate (946) via the second fixed shaft (947).

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