A waterproof prefabricated shield segment

Abstract

The present invention discloses a waterproof prefabricated shield segment, belonging to the technical field of shield segments, including a standard segment. A positioning rod is connected to the transverse end face of the standard segment. A guiding groove is formed on the outer side wall of the standard segment, and a water seepage component is connected to the side wall of the guiding groove. Longitudinal end faces of the standard segment are both provided with sliding grooves, and a front sliding rod and a rear sliding rod are respectively connected to two longitudinal side walls of the standard segment opposite to each other in the sliding grooves. A push rod is arranged on one side of the front sliding rod, and fastening sleeves are arranged on both sides of the push rod. Through the arrangement of the water seepage inner plate and the guiding groove, the present invention can guide the water above and on the side of the single ring formed by splicing the standard segments into the ground, preventing a large amount of water seepage from occurring at the top and side in the tunnel and damaging the standard segment itself and the connection reliability. At the same time, the structural design of the standard segment allows the operating workers to always assemble at a certain angle during assembly, avoiding the angle adjustment of staggered joints during the assembly of a single ring and improving the assembly speed.

Description

Technical Field

[0001] The present invention relates to the technical field of shield segments, and particularly to a waterproof prefabricated shield segment. Background Art

[0002] Shield segments are the main assembled components in shield construction. They are the innermost barrier of the tunnel, bearing the functions of resisting soil pressure, groundwater pressure, and some special loads. Shield segments are the permanent lining structure of shield tunnels. 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. The production of shield segments usually uses high-strength impermeable concrete to ensure reliable load-bearing capacity and waterproof performance. The production is mainly carried out by using finished segment molds, and the segments can be formed after pouring concrete in a sealed manner. In addition to being widely used in rail transit, prefabricated shield segments are also gradually being applied in fields such as water supply and power supply in big cities.

[0003] Currently, when assembling shield segments, external bolts are generally used for connection. In tunnels where shield segments are connected by bolts, a series of structural disease problems are likely to occur, including segment cracks, offset, water seepage, and track bed separation. These diseases appear concentratedly and tend to expand. At the same time, when assembling shield segments in the tunnel, mostly staggered joint assembly is adopted, which requires construction workers to continuously adjust the assembly angle of the shield segments, affecting the construction speed. Summary of the Invention

[0004] The purpose of the present invention is to solve a series of problems in the prior art, in which when assembling shield segments, external bolts are used for connection. In tunnels where shield segments are connected by bolts, a series of structural disease problems are likely to occur, including segment cracks, offset, water seepage, and track bed separation. These diseases appear concentratedly and tend to expand. At the same time, when assembling shield segments in the tunnel, mostly staggered joint assembly is adopted, which requires construction workers to continuously adjust the assembly angle of the shield segments, affecting the construction speed. Therefore, a waterproof prefabricated shield segment is proposed. The water above and on the side of the single ring formed by splicing standard segments is drained into the ground, preventing a large amount of water seepage at the top and side of the tunnel, and damage to the standard segments themselves and the connection reliability. And it allows the operators to assemble at a constant angle during assembly, avoiding the angle adjustment for staggered joints during single-ring assembly, improving the assembly speed, and at the same time making the splicing between standard segments more convenient and fast. The internal connection and water drainage avoid the problem that the connection is easily corroded by water, affecting the connection strength.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A waterproof prefabricated shield segment, including a standard segment, a positioning rod is connected to the transverse end face of the standard segment, a guiding groove is opened on the outer side wall of the standard segment, a water seepage component is connected to the side wall of the guiding groove, sliding grooves are opened on the longitudinal end faces of the standard segment, a front sliding rod and a rear sliding rod are respectively connected to the two longitudinal side walls of the standard segment opposite to each other in the sliding groove, a push rod is arranged on one side of the front sliding rod, fastening sleeves are arranged on both sides of the push rod, two threaded rods are arranged on one side of the rear sliding rod, a rotating cylinder is arranged between the two threaded rods, and a transmission component is arranged in the standard segment.

[0007] Preferably, the standard segment is in a curved Z shape, and six segments are connected end to end in a group to form a ring. The transverse end face of the standard segment is fixedly connected to the end of the positioning rod, a positioning hole is opened on the other transverse end face of the standard segment opposite to the positioning rod, and the positioning rod is adapted to the positioning hole.

[0008] Preferably, the water seepage component is composed of a supporting outer plate and a water seepage inner plate. The side wall of the supporting outer plate is fixedly connected to the side wall of the guiding groove, the outer side wall of the water seepage inner plate is fixedly connected to the inner side wall of the supporting outer plate, and a plurality of water seepage holes are opened on the water seepage inner plate.

[0009] Preferably, the front sliding rod is fixedly connected to the longitudinal side wall of the standard segment, the rear sliding rod is fixedly connected to the other longitudinal side wall of the standard segment, and the outer side walls of the front sliding rod and the rear sliding rod are respectively slidably connected to the inner side walls of the two sliding grooves.

[0010] Preferably, a conical head is fixedly connected to the end of the threaded rod, an internal thread is opened on the inner side wall of the fastening sleeve, and the outer side wall of the threaded rod is threadedly connected to the inner side wall of the fastening sleeve.

[0011] Preferably, the end of the push rod is fixedly connected to the transverse side wall of the standard segment, two sliding buttons are fixedly connected to the outer side wall of the push rod, a threaded groove is opened on the inner side wall of the rotating cylinder, and the outer side wall of the sliding button is slidably connected to the inner side wall of the threaded groove.

[0012] Preferably, the transmission component is composed of a main gear and two sub - gears. The main gear is located between the two sub - gears and meshes with each other pairwise. The inner side wall of the circular hole opened on the main gear is fixedly connected to the outer side wall of the rotating cylinder.

[0013] Preferably, the side wall of the sub - gear is fixedly connected to the end of the threaded rod. A protection box is arranged in the standard segment. The inner side wall of the shaft hole opened on the side wall of the protection box is rotatably connected to the outer side wall of the threaded rod, and the end of the rotating cylinder is rotatably connected to the inner side wall of the protection box.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In this solution, through the settings of the water-permeable inner plate and the guiding groove, the water above and on the sides of the single ring formed by splicing the standard segments can be diverted into the ground, preventing a large amount of water seepage from occurring at the top and sides of the tunnel, and damaging the standard segments themselves and the reliability of the connections.

[0016] 2. In this solution, through the structural design of the standard segments, the operating workers can always assemble them at a certain angle during assembly, avoiding the angle adjustment of the staggered joints during the assembly of a single ring and improving the assembly speed.

[0017] 3. In this solution, through the settings of the threaded rod and the fastening sleeve, the splicing between the standard segments can be made more convenient and rapid, connecting the interior and the diversion of water, and avoiding the problem that the connection is easily corroded by water and affects the connection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a waterproof prefabricated shield segment proposed by the present invention;

[0019] Figure 2 is a schematic structural diagram of the positioning hole in a waterproof prefabricated shield segment proposed by the present invention;

[0020] Figure 3 is a schematic structural diagram of the positioning rod in a waterproof prefabricated shield segment proposed by the present invention;

[0021] Figure 4 is a schematic structural diagram of the threaded rod in a waterproof prefabricated shield segment proposed by the present invention;

[0022] Figure 5 is a schematic structural diagram of the push rod in a waterproof prefabricated shield segment proposed by the present invention;

[0023] Figure 6 is a schematic structural diagram of the protection box in a waterproof prefabricated shield segment proposed by the present invention;

[0024] Figure 7 is a schematic structural diagram of the sliding button in a waterproof prefabricated shield segment proposed by the present invention;

[0025] Figure 8 is Figure 1 an enlarged view of part A in

[0026] In the figure: 1. Standard segment; 2. Positioning rod; 3. Support outer plate; 4. Water-permeable inner plate; 5. Front sliding rod; 6. Rear sliding rod; 7. Threaded rod; 8. Conical head; 9. Fastening sleeve; 10. Push rod; 11. Sliding button; 12. Rotating cylinder; 13. Protection box; 14. Main gear; 15. Sub-gear. DETAILED DESCRIPTION OF THE INVENTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] Refer to Figure 1-8 , a waterproof prefabricated shield segment, including a standard segment 1, a positioning rod 2 is connected to the transverse end face of the standard segment 1, a guiding groove is opened on the outer side wall of the standard segment 1, and a water seepage component is connected to the side wall of the guiding groove;

[0030] Furthermore, the standard segment 1 is a Z - shaped with a curvature, and every six form a ring by connecting end - to - end. The transverse end face of the standard segment 1 is fixedly connected to the end of the positioning rod 2. A positioning hole is opened on the other transverse end face of the standard segment 1 opposite to the positioning rod 2, and the positioning rod 2 is adapted to the positioning hole. The water seepage component is composed of a supporting outer plate 3 and a water seepage inner plate 4. The side wall of the supporting outer plate 3 is fixedly connected to the side wall of the guiding groove, the outer side wall of the water seepage inner plate 4 is fixedly connected to the inner side wall of the supporting outer plate 3, and a plurality of water seepage holes are opened on the water seepage inner plate 4;

[0031] It should be noted that: taking six standard segments 1 as a group for splicing, when splicing, align the positioning rod 2 on the transverse end face of the standard segment 1 with the positioning groove on the transverse end face of another standard segment 1, which is convenient for the quick positioning of the splicing of two adjacent standard segments 1. After splicing, the guiding grooves of two adjacent single rings will be spliced into a circular internal closed loop. The water source in the tunnel seeps into the water through the gaps between two adjacent single rings and the supporting outer plate 3, and then is further filtered by the water seepage inner plate 4 to penetrate into the internal closed loop formed by the two guiding grooves, preventing impurities such as soil from entering the guiding groove and causing blockage. Under the action of its own gravity, the water will flow along the internal closed loop to the lowest part, and then penetrate into the ground through the water seepage inner plate 4 and the supporting outer plate 3;

[0032] The advantage of the above - mentioned further description is that: in this way, the water above and on the side of the single ring formed by splicing the standard segments 1 can be drained into the ground, preventing a large amount of water seepage at the top and side of the tunnel, and damaging the standard segment 1 itself and the connection reliability.

[0033] Embodiment 2

[0034] Refer to Figure 1-8 , sliding grooves are opened on the longitudinal end faces of the standard segments 1, and a front sliding rod 5 and a rear sliding rod 6 are respectively connected to the two longitudinal side walls of the standard segments 1 opposite to the sliding grooves;

[0035] Furthermore, the front sliding rod 5 is fixedly connected to the longitudinal side wall of the standard segment 1, and the rear sliding rod 6 is fixedly connected to the other longitudinal side wall of the standard segment 1. The outer side walls of the front sliding rod 5 and the rear sliding rod 6 are respectively slidably connected to the inner side walls of the two chutes;

[0036] It should be noted that during the splicing process, the front sliding rod 5 and the rear sliding rod 6 are used to slide on the chutes for rapid assembly. The arc-shaped Z-shaped structure of the standard segment 1 allows the adjacent two spliced single rings to be stagger-jointed without adjusting the angle;

[0037] The advantage of the above further improvement is that it allows the operator to assemble at a constant angle during assembly, avoiding the angle adjustment of the stagger joint during the assembly of a single ring and improving the assembly speed.

[0038] Embodiment 3

[0039] Reference Figure 1-8 , a push rod 10 is provided on one side of the front sliding rod 5, fastening sleeves 9 are provided on both sides of the push rod 10, two threaded rods 7 are provided on one side of the rear sliding rod 6, a rotating cylinder 12 is provided between the two threaded rods 7, and a transmission component is provided inside the standard segment 1;

[0040] Furthermore, the end of the threaded rod 7 is fixedly connected to a conical head 8, the inner side wall of the fastening sleeve 9 is provided with internal threads, the outer side wall of the threaded rod 7 is threadedly connected to the inner side wall of the fastening sleeve 9, the end of the push rod 10 is fixedly connected to the transverse side wall of the standard segment 1, two sliding buttons 11 are fixedly connected to the outer side wall of the push rod 10, the inner side wall of the rotating cylinder 12 is provided with a thread groove, the outer side wall of the sliding button 11 is slidably connected to the inner side wall of the thread groove, the transmission component is composed of a main gear 14 and two sub-gears 15. The main gear 14 is located between the two sub-gears 15 and they are meshed with each other in pairs. The inner side wall of the round hole provided on the main gear 14 is fixedly connected to the outer side wall of the rotating cylinder 12, the side wall of the sub-gear 15 is fixedly connected to the end of the threaded rod 7, a protection box 13 is provided inside the standard segment 1, the inner side wall of the shaft hole provided on the side wall of the protection box 13 is rotatably connected to the outer side wall of the threaded rod 7, and the end of the rotating cylinder 12 is rotatably connected to the inner side wall of the protection box 13;

[0041] It should be noted that when splicing a single ring, align the two conical heads 8 and the two fastening sleeves 9 respectively, and align the push rod 10 and the rotary cylinder 12. During the process of pushing inward, the sliding button 11 on the push rod 10 slides on the inner side wall of the threaded groove in the rotary cylinder 12, thereby driving the rotary cylinder 12 to rotate within the protection box 13. The rotation of the rotary cylinder 12 drives the main gear 14 to rotate, and the rotation of the main gear 14 drives the two meshing secondary gears 15 on both sides to rotate together. The rotation of the secondary gears 15 drives the two threaded rods 7 to rotate together, and the threaded rods 7 rotate and continuously tighten within the fastening sleeves 9. After most of it is pushed in, use a rubber hammer to continuously knock on the standard segment 1 to make the adjacent two standard segments 1 closely connected. The internally provided threaded rods 7 and fastening sleeves 9 are connected, avoiding corrosion by water and ensuring the connection strength and reliability.

[0042] The further advantage of adopting the above is that it can make the splicing between the standard segments 1 more convenient and fast, connect the interior and conduct water, and avoid the problem that the connection part is easily corroded by water and affects the connection strength.

[0043] When the present invention is in use, six standard segments 1 are used as a group for splicing. During splicing, align the positioning rod 2 on the transverse end face of the standard segment 1 with the positioning groove on the transverse end face of another standard segment 1, which is convenient for the quick positioning of the splicing of adjacent two standard segments 1. After splicing, the two guiding grooves of adjacent single rings will be spliced into a circular internal closed loop. The water source in the tunnel seeps in through the gaps between adjacent two single rings and the supporting outer plate 3, and then is further filtered by the water-permeable inner plate 4 to penetrate the water into the internal closed loop formed by the two guiding grooves, preventing impurities such as soil from entering the guiding grooves and causing blockage. Under the action of its own gravity, the water will flow along the internal closed loop to the bottom, and then penetrate into the ground through the water-permeable inner plate 4 and the supporting outer plate 3. In this way, the water above and on the side of the single ring formed by splicing the standard segments 1 can be conducted into the ground, preventing a large amount of water seepage from occurring at the top and side of the tunnel and damaging the standard segment 1 itself and the connection reliability.

[0044] During the splicing process, utilize the sliding of the front sliding rod 5 and the rear sliding rod 6 on the sliding groove for quick assembly. The arc-shaped Z-shaped structure of the standard segment 1 enables adjacent two spliced single rings to be assembled with staggered joints without adjusting the angle. In this way, the operator can always assemble at one angle during assembly, avoiding the angle adjustment of the staggered joints during single ring assembly and improving the assembly speed.

[0045] When splicing a single ring, align the two conical heads 8 and the two fastening sleeves 9 respectively, and align the push rod 10 and the rotating cylinder 12. During the process of pushing inward, the sliding button 11 on the push rod 10 slides on the inner side wall of the threaded groove in the rotating cylinder 12, thereby driving the rotating cylinder 12 to rotate in the protection box 13. The rotation of the rotating cylinder 12 drives the main gear 14 to rotate. Then, the rotation of the main gear 14 drives the two meshing secondary gears 15 on both sides to rotate together. The rotation of the secondary gears 15 drives the two threaded rods 7 to rotate together. The threaded rods 7 rotate and continuously tighten in the fastening sleeves 9. After most of it is pushed in, use a rubber hammer to continuously knock on the standard segment 1 to make the two adjacent standard segments 1 tightly connected. The internally provided threaded rods 7 and the fastening sleeves 9 are connected, avoiding corrosion by water, ensuring the connection strength and reliability. In this way, the splicing between the standard segments 1 can be made more convenient and fast, and the connection inside and the water diversion are achieved, avoiding the problem that the connection is easily corroded by water and affecting the connection strength.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A waterproof prefabricated shield segment, comprising a standard segment (1), characterized in that, The standard segment (1) is transversely connected to a positioning rod (2) at its end face. A guiding groove is formed on the outer side wall of the standard segment (1), and a water seepage component is connected to the side wall of the guiding groove. Longitudinal end faces of the standard segment (1) are each provided with a sliding groove. Two longitudinal side walls of the standard segment (1) opposite to each other in the sliding groove are respectively connected to a front sliding rod (5) and a rear sliding rod (6). A push rod (10) is arranged on one side of the front sliding rod (5). Fastening sleeves (9) are arranged on both sides of the push rod (10). Two threaded rods (7) are arranged on one side of the rear sliding rod (6). A rotating cylinder (12) is arranged between the two threaded rods (7). A transmission component is arranged inside the standard segment (1). The standard segment (1) is in a Z shape with an arc, and six segments are connected end to end in a group to form a ring. The transversely end face of the standard segment (1) is fixedly connected to the end of the positioning rod (2). A positioning hole is formed in the other transversely end face of the standard segment (1) opposite to the positioning rod (2). The positioning rod (2) is adapted to the positioning hole. The end of the threaded rod (7) is fixedly connected to a conical head (8). The inner side wall of the fastening sleeve (9) is provided with internal threads. The outer side wall of the threaded rod (7) is threadedly connected to the inner side wall of the fastening sleeve (9). The end of the push rod (10) is fixedly connected to the transversely side wall of the standard segment (1). Two sliding buttons (11) are fixedly connected to the outer side wall of the push rod (10). The inner side wall of the rotating cylinder (12) is provided with a threaded groove. The outer side wall of the sliding button (11) is slidably connected to the inner side wall of the threaded groove. The transmission component is composed of a main gear (14) and two sub - gears (15). The main gear (14) is located between the two sub - gears (15) and they are meshed with each other pairwise. The inner side wall of the circular hole formed in the main gear (14) is fixedly connected to the outer side wall of the rotating cylinder (12). The side wall of the sub - gear (15) is fixedly connected to the end of the threaded rod (7). A protection box (13) is arranged inside the standard segment (1). The inner side wall of the shaft hole formed in the side wall of the protection box (13) is rotatably connected to the outer side wall of the threaded rod (7). The end of the rotating cylinder (12) is rotatably connected to the inner side wall of the protection box (13).

2. The waterproof prefabricated shield segment according to claim 1, characterized in that, The water seepage component is composed of a support outer plate (3) and a water seepage inner plate (4). The side wall of the support outer plate (3) is fixedly connected to the side wall of the guiding groove. The outer side wall of the water seepage inner plate (4) is fixedly connected to the inner side wall of the support outer plate (3). A plurality of water seepage holes are formed in the water seepage inner plate (4).

3. A waterproof prefabricated shield segment according to claim 1, characterized in that, The front sliding rod (5) is fixedly connected to the longitudinal side wall of the standard segment (1). The rear sliding rod (6) is fixedly connected to the other longitudinal side wall of the standard segment (1). The outer side walls of the front sliding rod (5) and the rear sliding rod (6) are respectively slidably connected to the inner side walls of the two sliding grooves.

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