Subway shield segment joint protection device

Abstract

The utility model relates to the technical field of segment joint protection, and discloses a subway shield segment joint protection device which comprises a first shield segment, and a second shield segment is arranged on the side edge of the first shield segment. The first shield segment and the second shield segment are arranged in parallel, and a joint protection connecting assembly used for protection connection is arranged at the joint of the first shield segment and the second shield segment. An outer-layer protection plate and an inner-layer protection plate in the joint protection connecting assembly can conduct closed protection on the outer side of the joint, a left-side inner wall abutting plate and a right-side inner wall abutting plate can be connected in a reset mode after being extruded and deformed, and therefore the extruded protection capacity of the joint is greatly improved; the situation that the joint of the first shield segment and the second shield segment is prone to being extruded and cracks is avoided, and the joint of the first shield segment and the second shield segment can be firmly connected in a sealed mode.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe segment joint protection, in particular to a subway shield pipe segment joint protection device. Background Art

[0002] The shield segment is the main assembly component of the shield construction and the innermost barrier of the tunnel. It is responsible for resisting soil pressure, groundwater pressure and some special loads. The shield segment is the permanent lining structure of the shield tunnel. The quality of the shield segment is directly related to the overall quality and safety of the tunnel, and affects the waterproof performance and durability of the tunnel.

[0003] After searching, the authorized Chinese patent announcement number CN 219953357 U discloses a subway shield segment joint protection device, including a segment body, a first protection component is arranged between two adjacent segment bodies on the left and right, a second extrusion strip is fixedly arranged on the front of the segment body, a second groove is opened on the back of the segment body, a second sealing strip is arranged inside the second groove, and a second protection component is arranged between two adjacent segment bodies in front and behind. The utility model places a reinforcement strip between adjacent segment bodies, places a first upper reinforcement plate on the top of the segment body, and places a lower reinforcement plate on the bottom of the segment body, and then fixes the lower reinforcement plate to the segment body, so as to achieve the protection effect of the gap between the adjacent segment bodies on the left and right, and places a second upper reinforcement plate above the gap between the two adjacent segment bodies in front and behind, and then fixes the second upper reinforcement plate to the segment body, so as to effectively improve the protection effect of the gap between the adjacent segment bodies on the left and right and the adjacent segment bodies in front and behind.

[0004] The shield segment joint device in the above-mentioned patent still has certain shortcomings. The connections between the existing shield segment joints are mostly fastened with multiple sets of bolts. The bolted segments are difficult to withstand the compression of underground soil or water layers, which can easily lead to the loosening of the bolts after being squeezed, making it easy for cracks and other gaps to appear between the segments, making it difficult to achieve a firm sealing connection between the segments. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a subway shield segment joint protection device, which solves the problem that the connections between the existing shield segment joints are mostly connected by multiple sets of bolts, and the segments connected by bolts are difficult to withstand the extrusion of underground soil or water layers, which can easily lead to the loosening of the bolts after being squeezed, making it easy for cracks and other gaps to appear between the segments, making it difficult to achieve a firm sealing connection between the segments.

[0006] The utility model provides the following technical solution: a subway shield segment joint protection device, comprising a first shield segment, a second shield segment is arranged on the side of the first shield segment, and a joint protection connection component for protective connection is arranged at the joint of the first shield segment and the second shield segment;

[0007] The joint protection connection assembly includes an outer protective plate arranged at the top of the junction of the first shield segment and the second shield segment, an inner protective plate is arranged at the bottom of the outer protective plate, a left inner wall abutment plate is arranged at the bottom of the junction of the first shield segment and the second shield segment, a sliding slot is opened at the end of the left inner wall abutment plate, a right inner wall abutment plate is arranged on the side of the left inner wall abutment plate, a connecting plug plate is arranged at the end of the right inner wall abutment plate, the end of the connecting plug plate is slidably inserted in the sliding slot, a limited slot is opened at the end of the connecting plug plate, and a sliding slot is arranged A limit plug plate, the end of which is slidably inserted into the limit slot, a connecting spring is arranged on the limit plug plate rod, one end of the connecting spring is connected to the limit plug plate rod, and the other end of the connecting spring is connected to the end of the connecting plug plate, a joint filling plate is arranged on the top of the left inner wall contact plate, the joint filling plate is inserted at the junction of the first shield segment and the second shield segment, a plurality of connecting screws are evenly arranged in the joint filling plate, the top of the connecting screw passes through the inner protective plate and the middle of the outer protective plate, and a connecting nut is sleeved on the top of the connecting screw.

[0008] Preferred technical solution 1: A number of fastening bolts are evenly inserted on the outer protective plate, and the bottom ends of the fastening bolts pass through the inner protective plate, the first shield segment, the second shield segment, the left inner wall contact plate and the right inner wall contact plate.

[0009] Preferred technical solution 2: A resistance spring is sleeved on the bottom end of the fastening bolt shaft, and a fastening nut is arranged on the bottom end of the fastening bolt.

[0010] Preferred technical solution three: the side edges of the outer protective plate cover the side edges of the inner protective plate.

[0011] This solution can ensure that the outer protective plate is the first to be squeezed, resisted and corroded by the outside world, thereby providing certain protection for the inner protective plate.

[0012] Preferred technical solution four: the connecting plug plate is in a curved shape that matches the sliding slot.

[0013] This solution enables the end of the connecting plug plate to be inserted into the sliding slot more conveniently.

[0014] Preferred technical solution five: one side of the resistance spring resists against the fastening nut, and the other side of the resistance spring resists against the right inner wall resistance plate and the side edge of the left inner wall resistance plate.

[0015] This solution enables the side edges of the left inner wall resistance plate and the right inner wall resistance plate to be resisted by the resistance spring, so that they fit more closely with the inner walls of the first shield segment and the second shield segment.

[0016] Compared with the prior art, the utility model provides a subway shield segment joint protection device, which has the following beneficial effects:

[0017] (1) The utility model provides a joint protection connection assembly at the joint of the first shield segment and the second shield segment, wherein the outer protective plate and the inner protective plate in the joint protection connection assembly can close and protect the outer side of the joint, and the inner side of the joint is closed by the resistance of the left inner wall resistance plate and the right inner wall resistance plate, and the outer protective plate, the inner protective plate, the left inner wall resistance plate and the right inner wall resistance plate are fixedly connected by a plurality of fastening bolts inserted through the first shield segment and the second shield segment, so that the joint can be firmly sealed and connected, and the outer protective plate, the inner protective plate, the left inner wall resistance plate and the right inner wall resistance plate are fixedly connected by a plurality of fastening bolts inserted through the first shield segment and the second shield segment. The protective plate and the inner protective plate enhance the anti-extrusion capability of the outer side of the joint, and a certain deformation can occur between the left inner wall contact plate and the right inner wall contact plate, so that when the first shield segment and the second shield segment are squeezed, the left inner wall contact plate and the right inner wall contact plate can be reset and connected after being squeezed and deformed, and are not easily damaged by squeezing, thereby greatly improving the extrusion protection capability of the joint, avoiding the joint of the first shield segment and the second shield segment from being easily squeezed and cracked, and being able to firmly seal and connect the joint of the first shield segment and the second shield segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the main cross-section of the structure of the utility model;

[0020] Figure 3 For the utility model Figure 2 An enlarged view of the structure of the inner wall contact plate on the left side of the middle;

[0021] Figure 4 For the utility model Figure 2 An enlarged view of the structure of the connecting nut.

[0022] In the figure:

[0023] 1. The first shield segment; 2. The second shield segment; 3. The joint protection connection assembly;

[0024] 301, outer protective plate; 302, inner protective plate; 303, left inner wall resistance plate; 304, sliding slot; 305, right inner wall resistance plate; 306, connecting plug plate; 307, limiting slot; 308, limiting plug plate; 309, connecting spring; 310, joint filling plate; 311, connecting screw; 312, connecting nut; 313, fastening bolt; 314, resistance spring; 315, fastening nut. DETAILED DESCRIPTION

[0025] See also Figure 1-4

[0026] Embodiment 1: A subway shield segment joint protection device comprises a first shield segment 1, a second shield segment 2 is arranged on the side of the first shield segment 1, and a joint protection connection component 3 for protective connection is arranged at the joint between the first shield segment 1 and the second shield segment 2.

[0027] The joint protection connection assembly 3 includes an outer protective plate 301 arranged at the top of the junction of the first shield segment 1 and the second shield segment 2, an inner protective plate 302 is arranged at the bottom of the outer protective plate 301, a left inner wall contact plate 303 is arranged at the bottom of the junction of the first shield segment 1 and the second shield segment 2, a sliding slot 304 is opened at the end of the left inner wall contact plate 303, a right inner wall contact plate 305 is arranged on the side of the left inner wall contact plate 303, and a connecting plug plate 306 is arranged at the end of the right inner wall contact plate 305, and the end of the connecting plug plate 306 is slidably inserted in the sliding slot 304.

[0028] A limiting slot 307 is provided at the end of the connecting plug plate 306, a limiting plug plate 308 is arranged in the sliding slot 304, the end of the limiting plug plate 308 is slidably inserted into the limiting slot 307, a connecting spring 309 is arranged on the rod body of the limiting plug plate 308, one end of the connecting spring 309 is connected to the rod body of the limiting plug plate 308, and the other end of the connecting spring 309 is connected to the end of the connecting plug plate 306, and a joint filling plate 310 is arranged on the top of the left inner wall contact plate 303, and the joint filling plate 310 is inserted at the junction of the first shield segment 1 and the second shield segment 2.

[0029] A number of connecting screws 311 are evenly arranged in the joint filling plate 310, and the top of the connecting screw 311 passes through the middle of the inner protective plate 302 and the outer protective plate 301, and the top of the connecting screw 311 is sleeved with a connecting nut 312, and a number of fastening bolts 313 are evenly inserted on the outer protective plate 301, and the bottom ends of the fastening bolts 313 pass through the inner protective plate 302, the first shield segment 1, the second shield segment 2, the left inner wall resistance plate 303 and the right inner wall resistance plate 305, the bottom end of the fastening bolt 313 rod is sleeved with a resistance spring 314, and the bottom end of the fastening bolt 313 is provided with a fastening nut 315.

[0030] Embodiment 2: The difference between this embodiment and embodiment 1 is that the side edge of the outer protective plate 301 covers the side edge of the inner protective plate 302 .

[0031] The outer protective plate 301 is able to be squeezed, resisted and corroded by the outside world first, thus providing certain protection for the inner protective plate 302 .

[0032] Embodiment 3: The difference between this embodiment and embodiment 1 is that the connecting plug plate 306 is in a curved shape that matches with the sliding slot 304 .

[0033] This makes it easier for the end of the connecting plug plate 306 to be inserted into the sliding slot 304 .

[0034] Embodiment 4: The difference between this embodiment and embodiment 1 is that one side of the resistance spring 314 is in resistance with the fastening nut 315, and the other side of the resistance spring 314 is in resistance with the right inner wall resistance plate 305 and the side of the left inner wall resistance plate 303.

[0035] The side edges of the left inner wall abutment plate 303 and the right inner wall abutment plate 305 are abutted by the abutment spring 314 , and fit more closely with the inner walls of the first shield segment 1 and the second shield segment 2 .

[0036] In this embodiment, since the connections between the existing shield segments are mostly fastened with multiple sets of bolts, the bolted segments are difficult to withstand the compression of underground soil or water layers, which can easily cause the bolts to loosen after being squeezed, making it easy for cracks and other gaps to appear between the segments, making it difficult to achieve a firm sealing connection between the segments.

[0037] In summary, in a specific implementation, a joint protection connection assembly 3 is provided at the joint of the first shield segment 1 and the second shield segment 2, wherein the outer protective plate 301 and the inner protective plate 302 in the joint protection connection assembly 3 can protect and close the outer side of the joint of the first shield segment 1 and the second shield segment 2, and the outer protective plate 301 and the inner protective plate 302 can be fitted on the outer side of the joint of the first shield segment 1 and the second shield segment 2, and then a plurality of fastening bolts 313 are inserted into the outer protective plate 301, and a left inner wall resistance plate 303 and a right inner wall resistance plate 305 are provided on the inner side of the joint of the first shield segment 1 and the second shield segment 2, and the left inner wall resistance plate 303 and the right inner wall resistance plate 305 are connected by a connecting plug plate 306 that is slidably inserted in a sliding slot 304, and the ends of the connecting plug plate 306 are elastically connected by a connecting spring 309.

[0038] This improves the connection firmness between the left inner wall contact plate 303 and the right inner wall contact plate 305, and the bottom end of the fastening bolt 313 passes through the sides of the left inner wall contact plate 303 and the right inner wall contact plate 305, so that the outer side of the joint between the first shield segment 1 and the second shield segment 2 is protected by the outer protective plate 301 and the inner protective plate 302, and the inner side of the joint between the first shield segment 1 and the second shield segment 2 is protected by the left inner wall contact plate 303 and the right inner wall contact plate 305, so that the joint between the first shield segment 1 and the second shield segment 2 is more tightly connected and better protected.

[0039] When the first shield segment 1 and the second shield segment 2 are subjected to external resistance and compression, the outer protective plate 301 and the inner protective plate 302 are provided at the joint of the first shield segment 1 and the second shield segment 2, so that the compression strength of the joint of the first shield segment 1 and the second shield segment 2 can be greatly enhanced, and the inner side of the joint of the first shield segment 1 and the second shield segment 2 is also in friction with each other through the left inner wall resistance plate 303 and the right inner wall resistance plate 305, and the right inner wall resistance plate 305 and the left inner wall resistance plate 303 can slide slightly, so that the connection between the right inner wall resistance plate 305 and the left inner wall resistance plate 303 has a certain elastic space, which is not easily damaged by compression, thereby greatly improving the compression protection capacity of the joint, avoiding the joint of the first shield segment 1 and the second shield segment 2 from being easily squeezed and cracked, and the joint of the first shield segment 1 and the second shield segment 2 can be firmly sealed and connected.

Claims

1. A subway shield segment joint protection device, comprising a first shield segment (1), characterized in that: A second shield segment (2) is arranged on the side of the first shield segment (1), and a joint protection connection component (3) for protective connection is arranged at the joint between the first shield segment (1) and the second shield segment (2); The joint protection connection assembly (3) comprises an outer protective plate (301) arranged at the top of the junction of the first shield segment (1) and the second shield segment (2); an inner protective plate (302) is arranged at the bottom of the outer protective plate (301); a left inner wall abutment plate (303) is arranged at the bottom of the junction of the first shield segment (1) and the second shield segment (2); a sliding slot (304) is provided at the end of the left inner wall abutment plate (303); a right inner wall abutment plate (305) is provided on the side of the left inner wall abutment plate (303); a connecting plug plate (306) is provided at the end of the right inner wall abutment plate (305); the end of the connecting plug plate (306) is slidably inserted in the sliding slot (304); a limiting slot (307) is provided at the end of the connecting plug plate (306); a limiting plug plate is provided in the sliding slot (304). (308), the end of the limiting plug plate (308) is slidably inserted into the limiting slot (307), a connecting spring (309) is arranged on the rod body of the limiting plug plate (308), one end of the connecting spring (309) is connected to the rod body of the limiting plug plate (308), and the other end of the connecting spring (309) is connected to the end of the connecting plug plate (306), a joint filling plate (310) is arranged at the top end of the left inner wall abutment plate (303), the joint filling plate (310) is inserted at the joint of the first shield segment (1) and the second shield segment (2), a plurality of connecting screws (311) are evenly arranged in the joint filling plate (310), the top end of the connecting screw (311) passes through the middle of the inner protective plate (302) and the outer protective plate (301), and the top end of the connecting screw (311) is sleeved with a connecting nut (312).

2. A subway shield segment joint protection device according to claim 1, characterized in that: A plurality of fastening bolts (313) are evenly inserted on the outer protective plate (301), and the bottom ends of the fastening bolts (313) penetrate the inner protective plate (302), the first shield segment (1), the second shield segment (2), the left inner wall abutment plate (303) and the right inner wall abutment plate (305).

3. A subway shield segment joint protection device according to claim 2, characterized in that: The bottom end of the shaft of the fastening bolt (313) is sleeved with a resisting spring (314), and the bottom end of the fastening bolt (313) is provided with a fastening nut (315).

4. A subway shield segment joint protection device according to claim 3, characterized in that: The side edge of the outer protective plate (301) covers the side edge of the inner protective plate (302).

5. A subway shield segment joint protection device according to claim 4, characterized in that: The connecting plug plate (306) is in a curved shape that matches the sliding slot (304).

6. A subway shield segment joint protection device according to claim 5, characterized in that: One side of the resistance spring (314) resists against the fastening nut (315), and the other side of the resistance spring (314) resists against the side edges of the right inner wall resistance plate (305) and the left inner wall resistance plate (303).

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