An assembled shield segment

Abstract

The present invention discloses an assembled shield segment, which comprises a variety of plate bodies connected to form an annular structure. The plate bodies include a crown piece located at the top and a standard piece located at the bottom. Each end of the crown piece and the standard piece is connected by more than one adjacent piece. A male surface is provided at both ends of the crown piece and one end of the adjacent piece, and a female surface is provided at both ends of the standard piece and the other end of the adjacent piece. The male surface includes an insert block slidably inserted on the end surface of the plate body, and the female surface includes a slot opened on the end surface of the plate body and a thin bladder provided on the end surface. A rubber bladder is provided inside the slot, and an air duct is connected between the rubber bladder and the thin bladder. It also includes an anchoring mechanism penetrating the outer surface of the plate body and close to one side of the insert block, and the anchoring mechanism is connected to the insert block through a link mechanism. After the segments are docked, while anchoring, the adjacent plate bodies can be reinforced, and at the same time, the sealing performance between the adjacent plate bodies can be improved to avoid water seepage in the later stage.

Description

Technical Field

[0001] The present invention relates to a shield segment, in particular to an assembled shield segment. Background Art

[0002] Shield segments are the main assembled components in shield construction. They are the innermost barriers of the tunnel, bearing the functions of resisting soil pressure, groundwater pressure, and some special loads. Shield segments are the permanent lining structures of shield tunnels, and the quality of shield segments is directly related to the overall quality and safety of the tunnel, affecting the waterproof performance and durability of the tunnel.

[0003] After the shield segments are assembled, they need to be anchored on the surface to play a strengthening role. If there are problems with the waterproof sealing performance between the segments, water seepage may occur at local positions in the later stage. Summary of the Invention

[0004] The purpose of the present invention is to provide an assembled shield segment. After the segments are butted, while being anchored, the adjacent plate bodies can be strengthened, and at the same time, the sealing performance between the adjacent plate bodies can be increased to avoid water seepage in the later stage.

[0005] The technical solution of the present invention: An assembled shield segment includes a variety of plate bodies that are connected to form an annular structure. The plate bodies include a crown piece at the top and a standard piece at the bottom. Each end of the crown piece and the standard piece is connected by more than one adjacent piece. Male surfaces are provided at both ends of the crown piece and one end of the adjacent piece, and female surfaces are provided at both ends of the standard piece and the other end of the adjacent piece. The male surface includes an insert block that is slidably inserted into the end face of the plate body. The female surface includes a slot opened on the end face of the plate body and a thin bladder provided on the end face. A rubber bladder is provided inside the slot, and an air guide tube is connected between the rubber bladder and the thin bladder; there is also an anchoring mechanism that penetrates the outer surface of the plate body and is close to the insert block side, and the anchoring mechanism is connected to the insert block through a link mechanism.

[0006] In the aforementioned assembled shield segment, a groove is opened on the outer surface of the plate body, a guide groove is opened on the side wall of the groove, and the insert block is slidably inserted into the guide groove. The anchoring mechanism includes a threaded cylinder that penetrates the inner wall of the groove. A reinforcing rod is slidably inserted into the threaded cylinder. The lower end of the reinforcing rod is fixedly connected with a multi-faceted head. The multi-faceted head is an end cover structure, and its inner wall is provided with threads. The barrel of the threaded cylinder is connected to the insert block through a link mechanism.

[0007] In the aforementioned assembled shield segment, a multi-faceted ring is fixedly sleeved at the lower end of the barrel of the threaded cylinder. A first tapered tip and a second tapered tip are respectively opened at the upper end of the threaded cylinder and the reinforcing rod. A threaded sleeve is fixedly embedded on the inner wall of the groove.

[0008] In the aforementioned prefabricated shield segment, the link mechanism includes a collar rotatably sleeved on the barrel of the threaded barrel. Two limit rings are clamped on the barrel of the threaded barrel at the upper and lower ends of the collar. An extension plate is arranged at the end of the collar. A connecting rod is rotatably connected between the two extension plates on both sides through a first rotating shaft. The upper end of the connecting rod is rotatably connected to the inner side of the plug through a second rotating shaft.

[0009] In the aforementioned prefabricated shield segment, the male surface further includes a protruding strip protruding from the end face of the plate body, and the female surface further includes a strip-shaped groove opened on the end face of the plate body. The protruding strip can be embedded in the inner side of the strip-shaped groove. The thin bag is located in the inner side of the strip-shaped groove, and a cutting edge is opened on the edge of the protruding strip.

[0010] In the aforementioned prefabricated shield segment, the number of plugs on each male surface is set to two groups, and the two groups of plugs are arranged near the corners of the plate body.

[0011] In the aforementioned prefabricated shield segment, an arc-shaped strip protrudes from the front surface of the plate body, and an arc-shaped groove matching the arc-shaped strip is opened on the rear surface of the plate body.

[0012] In the aforementioned prefabricated shield segment, anchoring holes are respectively opened on the surfaces of the arc-shaped strip and the arc-shaped groove.

[0013] In the aforementioned prefabricated shield segment, an anchoring groove is opened on the outer surface of the plate body, avoiding the corner maintenance of the plug.

[0014] The beneficial effects of the present invention: Compared with the prior art, the present invention has the following advantages:

[0015] 1. When the plate bodies are spliced, the male surface is aligned with the female surface. Along the front-rear direction, the protruding strip is moved along the strip-shaped groove. After docking the standard piece, the adjacent piece and the capping piece in this way, the reinforcement rod is tapped to make it insert into the tunnel wall, and then the multi-angle head is rotated and sleeved on the end of the threaded barrel. After that, the multi-angle ring is rotated to move the threaded barrel upward and insert it into the tunnel wall, playing a role of secondary reinforcement, and the installation is more stable.

[0016] 2. During the rotation of the threaded barrel, the collar also moves relatively towards the direction close to the groove. With the cooperation of the connecting rod, the first rotating shaft and the second rotating shaft, the plug slides out along the inner side of the guide groove and inserts into the inner side of the slot, thus completing the reinforcement between adjacent plate bodies. Therefore, while the plate body is reinforced with the inner wall of the tunnel, the reinforcement between adjacent plate bodies can be carried out, greatly improving the construction efficiency.

[0017] 3. When the plug inserts into the inner side of the strip-shaped groove, it will squeeze the rubber bag, so that the gas inside is sent into the inner side of the thin bag through the air duct. After the thin bag is inflated, it can tightly adhere to the protruding strip. This step realizes the pressurization inside the thin bag, effectively improving the sealing degree and effectively preventing the problem of water seepage during long-term use.

[0018] Generally speaking, after the segment is docked, while anchoring, the reinforcement between adjacent plates can be carried out, and at the same time, the sealing performance between adjacent plates can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic structural diagram of the top piece of the present invention;

[0021] Figure 3 is a schematic structural diagram of the adjacent piece of the present invention;

[0022] Figure 4 is a schematic structural diagram of the standard piece of the present invention;

[0023] Figure 5 is a schematic structural diagram of the partial cross-section of the plate body of the present invention;

[0024] Figure 6 is Figure 5 an enlarged view of part A in

[0025] Figure 7 is a schematic structural diagram of the anchoring mechanism connected to the insert block through the connecting rod mechanism;

[0026] Figure 8 is a schematic structural diagram of the anchoring mechanism;

[0027] Figure 9 is a schematic structural diagram of the connecting rod mechanism;

[0028] Figure 10 is a partial cross-sectional view when adjacent plates are docked;

[0029] Figure 11 is Figure 10 an enlarged view of part B in

[0030] Figure 12 is a schematic structural diagram of the thin sac part.

[0031] Reference numerals: 100, standard piece; 200, adjacent piece; 300, capping piece; 1, plate body; 2, male surface; 21, groove; 22, guide groove; 23, insertion block; 24, anchoring mechanism; 241, threaded cylinder; 242, reinforcing rod; 243, first pointed tip; 244, second pointed tip; 245, multi-angle ring; 246, multi-angle head; 247, threaded sleeve; 25, connecting rod mechanism; 251, collar; 252, extension plate; 253, first rotating shaft; 254, connecting rod; 255, second rotating shaft; 256, limiting ring; 26, protruding strip; 27, cutting edge; 3, female surface; 31, slot; 32, rubber bladder; 33, air guide tube; 34, thin bladder; 35, strip-shaped groove; 4, arc strip; 5, arc groove; 6, anchoring hole; 7, anchoring groove. Detailed implementation mode

[0032] The present invention will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present invention.

[0033] Embodiment of the present invention: An assembled shield segment, as Figures 1 - 12 shown, includes a plurality of plate bodies 1 connected to form a circular ring structure. The plate body 1 includes a standard piece 100, an adjacent piece 200 and a capping piece 300. Male surfaces 2 are respectively arranged at both ends of the capping piece 300 and one end of the adjacent piece 200. Female surfaces 3 are respectively arranged at both ends of the standard piece 100 and the other end of the adjacent piece 200. The male surface 2 includes an insertion block 23 slidably inserted on the end surface of the plate body 1. The female surface 3 includes a slot 31 opened on the end surface of the plate body 1 and a thin bladder 34 arranged on the end surface of the plate body 1. A rubber bladder 32 is arranged inside the slot 31. An air guide tube 33 is connected between the rubber bladder 32 and the thin bladder 34. An anchoring mechanism 24 penetrating the outer surface of the plate body 1 and close to one side of the insertion block 23 is also included. The anchoring mechanism 24 and the insertion block 23 are connected to each other through a connecting rod mechanism 25.

[0034] After the multiple plate bodies 1 of the segment are butted, they are fixed on the tunnel wall through the anchoring mechanism 24.

[0035] During anchoring, the adjacent plate bodies 1 can be strengthened by inserting the insertion block 23 on the male surface 2 into the slot 31 on the female surface 3. At the same time, when the insertion block 23 is inserted into the slot 31 and squeezes the rubber bladder 32, the air pressure in the thin bladder 34 increases, which can increase the sealing performance between the adjacent plate bodies 1. During the process of the anchoring mechanism 24 anchoring the plate body 1, the anchoring mechanism 24 moves, and the insertion block 23 is slidably pushed into the slot 31 through the connecting rod mechanism 25, so as to realize the tight connection between the adjacent plate bodies 1.

[0036] One standard piece 100, two adjacent pieces 200 and one capping piece 300 are provided to jointly form a ring structure. During construction, several ring structures are butted successively before and after to complete the assembly.

[0037] As Figure 6 , Figure 7 shown, a groove 21 is formed on the outer surface of the plate body 1, and a guide groove 22 is formed on the side wall of the groove 21. An insertion block 23 is slidably inserted into the inner side of the guide groove 22. The anchoring mechanism 24 includes a threaded cylinder 241 penetrating through the inner wall of the groove 21 and a reinforcing rod 242 slidably inserted into the threaded cylinder 241. The lower end of the reinforcing rod 242 is fixedly connected with a multi-faceted head 246. The multi-faceted head 246 is an end cap structure, and its inner wall is provided with threads. After the reinforcing rod 242 is lifted, the inner wall of the multi-faceted head 246 is threadedly engaged with the end of the threaded cylinder 241. The multi-faceted head 246 is provided to facilitate workers to strike and rotate.

[0038] As Figure 8 shown, a multi-faceted ring 245 is fixedly sleeved on the outer surface of the threaded cylinder 241 near the lower end. The outer surface of the threaded cylinder 241 and the upper end of the reinforcing rod 242 are respectively provided with a first pointed tip 243 and a second pointed tip 244, and the ends are sharp to ensure that they can be driven into the tunnel. A threaded sleeve 247 is fixedly embedded on the inner wall of the groove 21. The threaded sleeve 247 is for the threaded cylinder 241 to be inserted, and threaded cooperation is achieved between the two.

[0039] As Figure 9 shown, the link mechanism 25 includes a collar 251 rotatably sleeved on the outer surface of the threaded cylinder 241. Two limiting rings 256 are protruded on the outer surface of the threaded cylinder 241. The limiting rings 256 are located above and below the collar 251. An extension plate 252 is provided at the end of the collar 251. A connecting rod 254 is rotatably connected between the two extension plates 252 through a first rotating shaft 253. The upper end of the connecting rod 254 is rotatably matched with the inner side of the insertion block 23 through a second rotating shaft 255, ensuring that when the collar 251 is lifted, the insertion block 23 can be pushed out of the guide groove 22 and inserted into the slot 31.

[0040] As Figure 10 , Figure 11 , Figure 12 shown, the male surface 2 further includes a protruding strip 26 protruded on the end surface of the plate body 1, and the female surface 3 further includes a strip-shaped groove 35 formed on the end surface of the plate body 1. During use, the protruding strip 26 can be embedded into the inner side of the strip-shaped groove 35. The thin bag 34 is located inside the strip-shaped groove 35, and a cutting edge 27 is formed on the edge of the protruding strip 26.

[0041] The number of the insertion blocks 23 on each male surface 2 is set to two groups, and the two groups of insertion blocks 23 are arranged close to the corner of the plate body 1 to perform butt joint reinforcement at the corner maintenance, which is beneficial to the stability of the butt joint.

[0042] The front surface of the plate body 1 is convexly provided with an arc-shaped strip 4, and the rear surface of the plate body 1 is provided with an arc-shaped groove 5. When adjacent plate bodies 1 are butted front and back, the arc-shaped strip 4 is inserted into the inner side of the arc-shaped groove 5 to ensure the stability during front and back butting. Anchor holes 6 are respectively provided on the surfaces of the arc-shaped strip 4 and the arc-shaped groove 5. When butting front and back, an insertion anchor is driven into one of the front and back anchor holes 6, and then the front and back of the plate body 1 are butted.

[0043] An anchor groove 7 is provided on the outer surface of the plate body 1, avoiding the corner maintenance of the insertion block 23, for driving in additional anchor rods for reinforcement.

[0044] During splicing, the male surface 2 of the plate body 1 is aligned with the female surface 3. Along the front-back direction, the protruding strip 26 is moved along the strip-shaped groove 35. After docking the standard sheet 100, the adjacent sheet 200 and the capping sheet 300 in sequence, the reinforcement rod 242 is tapped to make it insert into the tunnel wall. Then, the multi-angle head 246 is rotated and sleeved on the end of the threaded cylinder 241. After that, the multi-angle ring 245 is rotated to make the threaded cylinder 241 move upward and insert into the tunnel wall, playing a role in secondary reinforcement and making the installation more stable. During the rotation of the threaded cylinder 241, the collar 251 also moves relatively in the direction close to the groove 21. With the cooperation of the connecting rod 254, the first rotating shaft 253 and the second rotating shaft 255, the insertion block 23 slides out along the inner side of the guide groove 22 and inserts into the inner side of the slot 31, thus completing the reinforcement between adjacent plate bodies 1. Therefore, while the plate body 1 and the inner wall of the tunnel are being reinforced, the reinforcement between adjacent plate bodies 1 can be carried out, greatly improving the construction efficiency. When the insertion block 23 is inserted into the inner side of the strip-shaped groove 35, it will squeeze the rubber bladder 32, so that the inner gas is sent into the inner side of the thin bladder 34 through the air duct 33. After the thin bladder 34 is inflated, it can closely adhere to the protruding strip 26. This step realizes the pressurization in the thin bladder 34, effectively improving the sealing degree and effectively preventing water seepage during long-term use.

Claims

1. An assembled shield segment, characterized in that: It includes a variety of plate bodies (1) connected to form a circular ring structure. The plate body (1) includes a capping piece (300) at the top and a standard piece (100) at the bottom. Each end of the capping piece (300) and the standard piece (100) is connected by more than one adjacent piece (200). A male surface (2) is provided at both ends of the capping piece (300) and one end of the adjacent piece (200). A female surface (3) is provided at both ends of the standard piece (100) and the other end of the adjacent piece (200). The male surface (2) includes an insertion block (23) slidably inserted on the end face of the plate body (1). The female surface (3) includes a slot (31) opened on the end face of the plate body (1) and a thin bladder (34) provided on the end face. A rubber bladder (32) is provided inside the slot (31). An air duct (33) is connected between the rubber bladder (32) and the thin bladder (34). It also includes an anchoring mechanism (24) penetrating the outer surface of the plate body (1) and close to the side of the insertion block (23). The anchoring mechanism (24) and the insertion block (23) are connected to each other through a link mechanism (25). A groove (21) is opened on the outer surface of the plate body (1). A guide groove (22) is opened on the side wall of the groove (21). The insertion block (23) is slidably inserted into the guide groove (22). The anchoring mechanism (24) includes a threaded cylinder (241) penetrating the inner wall of the groove (21). A reinforcing rod (242) is slidably inserted into the threaded cylinder (241). The lower end of the reinforcing rod (242) is fixedly connected with a multi-sided head (246). The multi-sided head (246) is an end cap structure with internal threads provided on its inner wall. The barrel body of the threaded cylinder (241) is connected to the insertion block (23) through a link mechanism (25). A multi-sided ring (245) is fixedly sleeved at the lower end of the barrel body of the threaded cylinder (241). A first sharpened tip (243) and a second sharpened tip (244) are respectively opened on the upper end of the threaded cylinder (241) and the reinforcing rod (242). A threaded sleeve (247) is fixedly embedded on the inner wall of the groove (21). The link mechanism (25) includes a collar (251) rotatably sleeved on the barrel body of the threaded cylinder (241). Two limit rings (256) are clamped on the barrel body of the threaded cylinder (241) at the upper and lower ends of the collar (251). An extension plate (252) is provided at the end of the collar (251). A connecting rod (254) is rotatably connected between the two side extension plates (252) through a first rotating shaft (253). The upper end of the connecting rod (254) is rotatably connected to the inner side of the insertion block (23) through a second rotating shaft (255).

2. The prefabricated shield segment according to claim 1, characterized in that: The male surface (2) further includes a protruding strip (26) protruding from the end face of the plate body (1). The female surface (3) further includes a strip-shaped groove (35) opened on the end face of the plate body (1). The protruding strip (26) can be embedded inside the strip-shaped groove (35). The thin bladder (34) is located inside the strip-shaped groove (35). A cutting edge (27) is opened on the edge of the protruding strip (26).

3. The prefabricated shield segment according to claim 1, characterized in that: The number of insertion blocks (23) on each male surface (2) is set to two groups, and the two groups of insertion blocks (23) are arranged close to the corner of the plate body (1).

4. The prefabricated shield segment according to claim 1, wherein: An arc-shaped strip (4) protrudes from the front surface of the plate body (1), and an arc-shaped groove (5) matching the arc-shaped strip (4) is formed on the rear surface of the plate body (1).

5. The prefabricated shield segment according to claim 4, wherein: Anchoring holes (6) are respectively formed on the surfaces of the arc-shaped strip (4) and the arc-shaped groove (5).

6. The prefabricated shield segment according to claim 1, wherein: An anchoring groove (7) is formed on the outer surface of the plate body (1) while avoiding the corner maintaining part of the insertion block (23).

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