Small-clear-distance shield tunnel structure retaining device with grouting function

Abstract

The invention discloses a small-clear-distance shield tunnel structure retaining device with a grouting function, and relates to the technical field of tunnel structure retaining devices, the small-clear-distance shield tunnel structure retaining device comprises a protection frame composed of an upper protection frame and a lower protection frame, a reinforcing frame composed of an upper reinforcing frame and a lower reinforcing frame is arranged in the protection frame, and the small-clear-distance shield tunnel structure retaining device further comprises a moving mechanism and a rotating mechanism. By arranging a rotating mechanism, a first motor operates to drive a fixing block to move upwards, the fixing block moves to be separated from a lower protection frame, then the lower protection frame is pushed to move till an upper protection frame and the lower protection frame are separated, a movable rod moves to one end of a movable frame, the fixing block moves downwards, and a second straight gear is driven to rotate; a second straight gear rotates to drive a movable rod to rotate, the movable rod rotates to drive a lower protection frame to rotate, the lower protection frame rotates to open the lower portion of the protection frame, it is conveniently guaranteed that traffic transportation of tunnel construction personnel and materials is smooth, and the protection frame is prevented from blocking passing.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel structure holding devices, in particular to a small-clearance shield tunnel structure holding device with a grouting function. Background Art

[0002] Small clearance shield tunnel refers to the small clearance between two parallel shield tunnels, which usually cannot meet the safety distance requirements of conventional shield tunnel construction. This type of tunnel structure faces many challenges during construction, such as stratum displacement control, mutual influence of tunnel structure, construction risk control, etc. The maintenance of small clearance shield tunnel structure is a comprehensive engineering problem, and multiple technologies and measures are required to ensure the stability and safety of the tunnel. Grouting reinforcement, compaction of the stratum, prestressed anchoring, reasonable construction sequence and excavation method, and monitoring and feedback are key measures to maintain the stability of small clearance shield tunnel structure. Among various countermeasures, grouting reinforcement combined with support structure is the main method for solving the problem of small clearance shield tunnel construction. When supporting and protecting the inside of the tunnel, a protection frame is required, and a reinforcement frame is arranged in the circular protection frame; however, the existing shield tunnel support devices will hinder the traffic and transportation of existing tunnels, and it is difficult to ensure the smooth transportation of construction personnel and materials of the supporting tunnel. In order to prevent the protection frame from affecting the transportation of materials, a small clearance shield tunnel structure maintenance device with grouting function is provided. Summary of the invention

[0003] The purpose of the present invention is to provide a small-clearance shield tunnel structure retaining device with a grouting function in order to prevent the protection frame from affecting the transportation of materials.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a small-clearance shield tunnel structure holding device with a grouting function, comprising a protection frame composed of an upper protection frame and a lower protection frame, wherein a reinforcement frame composed of an upper reinforcement frame and a lower reinforcement frame is arranged inside the protection frame, wherein the upper reinforcement frame is fixedly connected to the inner cavity of the upper protection frame, wherein the lower reinforcement frame is fixedly connected to the inner cavity of the lower protection frame, wherein the upper protection frame and the lower protection frame are moved by a moving mechanism, wherein the lower protection frame is rotated by a rotating mechanism, and wherein the outer walls of the upper protection frame and the lower protection frame are provided with a scanning mechanism; The movable mechanism comprises a mounting groove, the mounting groove is opened on the outer wall of the upper protective frame and the lower protective frame, the inner wall of the mounting groove is fixedly connected with a mounting seat, the two sides of the mounting seat are symmetrically rotatably connected with the first spur gear, the outer wall of the first spur gear is fixedly connected with a rotating rod, one end of the rotating rod is installed with a roller, the interior of the mounting seat is slidably connected with a supporting block extending to the top of the mounting seat, the supporting block contacts with the first spur gear, the interior of the mounting seat is rotatably connected with a first threaded rod extending inside the support block, the bottom end of the first threaded rod is fixedly connected with the first bevel gear, the interior of the mounting seat is located at the outer wall of the first bevel gear and is rotatably connected with a second bevel gear, one end of the second bevel gear is fixedly connected with the rotating wheel, and the top of the support block on the upper protective frame is fixedly connected with a plug rod.

[0005] As a further solution of the present invention: the rotating mechanism includes a groove, the groove is opened at the junction of the bottom end of the upper protective frame and the lower protective frame, the inner wall of the groove is fixedly connected to a movable frame, the top of the lower protective frame is fixedly connected to a movable rod, the movable rod is slidably connected to the inner wall of the movable frame, the outer wall of the movable rod is fixedly connected to a second spur gear, the outer wall of the upper protective frame is located above the groove and is fixedly connected to a fixed seat, the inner wall of the fixed seat is slidably connected to a fixed block, a first motor is installed on the top of the fixed seat, the output end of the first motor is connected to a second threaded rod, and the second threaded rod extends into the interior of the fixed block.

[0006] As a further scheme of the present invention: the scanning mechanism includes an annular groove, which is opened on the outer wall of one side of the upper protective frame and the lower protective frame, the inner wall of the annular groove is slidably connected with an arc block, one end of the arc block is fixedly connected with a vertical plate, the top of the arc block is fixedly connected with an infrared scanner, the inside of the arc block is rotatably connected with a third spur gear extending from the arc block, a second motor is installed on the outer wall of the vertical plate, the output end of the second motor is connected with a connecting shaft, the third spur gear is fixedly connected to one end of the connecting shaft, a slurry outlet is provided at the top of the vertical plate, the outer wall of the vertical plate is located above the second motor and is fixedly connected with a fixed cylinder, and the inner wall of the fixed cylinder is rotatably connected with a rotating tube.

[0007] As a further solution of the present invention: a first threaded hole is formed at the bottom end of the support block, the first threaded hole matches the first threaded rod, and the first bevel gear is meshed with the second bevel gear.

[0008] As a further solution of the present invention: first tooth grooves are formed on both sides of the support block, and the first tooth grooves are meshed with the first spur gear.

[0009] As a further solution of the present invention: the outer walls at both ends of the movable rod are in contact with the inner wall of the movable frame, the outer wall of the fixed block is provided with a second tooth groove, and the second tooth groove is meshed with the second spur gear.

[0010] As a further solution of the present invention: a second threaded hole is formed at the top of the fixing block, and the second threaded hole is engaged with the second threaded rod.

[0011] As a further solution of the present invention: the outer wall of the arc block is in an arc shape, and the outer wall of the arc block is in contact with the inner wall of the vertical plate.

[0012] As a further solution of the present invention: the inner wall of the annular groove is provided with a third tooth groove, and the third tooth groove is meshed with the third spur gear.

[0013] As a further solution of the present invention: one end of the inner wall of the fixed cylinder is fixedly connected to a limiting ring, the outer wall of the rotating tube is provided with a limiting groove, and the outer wall of the limiting ring is fitted with the inner wall of the limiting groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a rotating mechanism, the first motor drives the fixed block to move upward, the fixed block is displaced and separated from the lower protection frame, and then the lower protection frame is pushed to move until the upper protection frame and the lower protection frame are separated and the movable rod moves to one end of the movable frame, the fixed block moves downward, driving the second spur gear to rotate, the second spur gear rotates to drive the movable rod to rotate, the movable rod rotates to drive the lower protection frame to rotate, the lower protection frame rotates to open the lower part of the protection frame, so as to ensure the smooth transportation of tunnel construction personnel and materials and prevent the protection frame from blocking the passage.

[0015] 2. By setting up a moving mechanism, rotating the rotating wheel drives the second bevel gear to rotate, the second bevel gear rotates and drives the first bevel gear to rotate, the first bevel gear rotates and drives the first threaded rod to rotate, the first threaded rod rotates and drives the support block to move, the displacement of the support block drives the first straight gear to rotate, the first straight gear rotates and drives the rotating rod to rotate, the rotating rod rotates and drives the roller to move, when the protection frame is moved, the rotating wheel is rotated to drive the support block to separate from the inner wall of the tunnel, and the roller contacts the inner wall of the tunnel, and the protection frame is driven to move by the roller. After the movement is completed, the rotating wheel is rotated to drive the support block to contact the inner wall of the tunnel, and the protection frame is fixed, which is convenient for moving the protection frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the installation of the mounting base of the present invention; Figure 3 It is a schematic diagram of the internal structure of the mounting base of the present invention; Figure 4 It is a schematic diagram of the connection between the upper protection frame and the lower protection frame of the present invention; Figure 5 It is a schematic diagram of the internal structure of the fixing base of the present invention; Figure 6 It is a schematic diagram of the installation of the arc block of the present invention; Figure 7 It is a schematic diagram of the internal structure of the arc block of the present invention; Figure 8 It is a schematic diagram of the internal structure of the fixed tube and the rotating tube of the present invention.

[0017] In the figure: 1, upper protection frame; 2, lower protection frame; 3, upper reinforcement frame; 4, lower reinforcement frame; 5, moving mechanism; 501, mounting groove; 502, mounting seat; 503, first straight gear; 504, rotating rod; 505, roller; 506, support block; 507, first threaded rod; 508, first bevel gear; 509, second bevel gear; 510, rotating wheel; 511, plug rod; 6, rotating mechanism; 601, groove; 602, movable frame; 6 03. movable rod; 604. second spur gear; 605. fixed seat; 606. fixed block; 607. second threaded rod; 608. first motor; 7. scanning mechanism; 701. annular groove; 702. arc block; 703. vertical plate; 704. third spur gear; 705. connecting shaft; 706. second motor; 707. infrared scanner; 708. pulp outlet; 709. fixed cylinder; 710. rotating tube; 8. limiting ring; 9. limiting groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0020] See also Figures 1 to 8 In an embodiment of the present invention, a small-clearance shield tunnel structure holding device with a grouting function includes a protection frame composed of an upper protection frame 1 and a lower protection frame 2, a reinforcement frame composed of an upper reinforcement frame 3 and a lower reinforcement frame 4 is arranged in the protection frame, the upper reinforcement frame 3 is fixedly connected to the inner cavity of the upper protection frame 1, the lower reinforcement frame 4 is fixedly connected to the inner cavity of the lower protection frame 2, the upper protection frame 1 and the lower protection frame 2 are moved by a moving mechanism 5, and the lower protection frame 2 is rotated by a rotating mechanism 6, the outer walls of the upper protection frame 1 and the lower protection frame 2 are provided with a scanning mechanism 7, the moving mechanism 5 includes a mounting groove 501, the mounting groove 501 is opened on the outer walls of the upper protection frame 1 and the lower protection frame 2, the inner wall of the mounting groove 501 is fixedly connected with a mounting seat 502, and both sides of the mounting seat 502 The first spur gear 503 is symmetrically rotatably connected, and a rotating rod 504 is fixedly connected to the outer wall of the first spur gear 503, and a roller 505 is installed at one end of the rotating rod 504. The interior of the mounting seat 502 is slidably connected to a support block 506 extending to the top of the mounting seat 502, and the support block 506 is in contact with the first spur gear 503. The interior of the mounting seat 502 is rotatably connected to a first threaded rod 507 extending to the inside of the support block 506, and the bottom end of the first threaded rod 507 is fixedly connected to a first bevel gear 508. The interior of the mounting seat 502 is located on the outer wall of the first bevel gear 508 and is rotatably connected to a second bevel gear 509, and one end of the second bevel gear 509 is fixedly connected to a rotating wheel 510, and the top of the support block 506 on the upper protective frame 1 is fixedly connected to an insertion rod 511.

[0021] In this embodiment: rotating the rotating wheel 510 drives the second bevel gear 509 to rotate, the second bevel gear 509 rotates to drive the first bevel gear 508 to rotate, the first bevel gear 508 rotates to drive the first threaded rod 507 to rotate, the first threaded rod 507 rotates to drive the support block 506 to move, the displacement of the support block 506 drives the first straight gear 503 to rotate, the first straight gear 503 rotates to drive the rotating rod 504 to rotate, the rotating rod 504 rotates to drive the roller 505 to move, when the protection frame is moved, the rotating wheel 510 drives the support block 506 to separate from the inner wall of the tunnel, and the roller 505 contacts the inner wall of the tunnel, and the protection frame is driven to move by the roller 505. After the movement is completed, the rotating wheel 510 drives the support block 506 to contact the inner wall of the tunnel, and the protection frame is fixed, which is convenient for moving the protection frame.

[0022] Please refer to Figures 4 to 5 The rotating mechanism 6 includes a groove 601, which is opened at the junction of the bottom end of the upper protective frame 1 and the lower protective frame 2. The inner wall of the groove 601 is fixedly connected with a movable frame 602, and the top of the lower protective frame 2 is fixedly connected with a movable rod 603. The movable rod 603 is slidably connected to the inner wall of the movable frame 602, and the outer wall of the movable rod 603 is fixedly connected with a second spur gear 604. The outer wall of the upper protective frame 1 is located above the groove 601 and is fixedly connected with a fixed seat 605. The inner wall of the fixed seat 605 is slidably connected with a fixed block 606. A first motor 608 is installed on the top of the fixed seat 605. The output end of the first motor 608 is connected with a second threaded rod 607, and the second threaded rod 607 extends into the interior of the fixed block 606.

[0023] In this embodiment: when materials need to be transported through the protection frame, the first motor 608 is started, and the operation of the first motor 608 drives the second threaded rod 607 to rotate. The rotation of the second threaded rod 607 drives the fixed block 606 to move upward, and the fixed block 606 is displaced and separated from the lower protection frame 2, and then the lower protection frame 2 is pushed to move. At this time, the movable rod 603 slides in the movable frame 602 until the upper protection frame 1 and the lower protection frame 2 are separated and the movable rod 603 moves to one end of the movable frame 602, and the first motor 608 is started to drive the fixed block 606 to move downward, and the fixed block 606 is displaced to contact the second spur gear 604, and then drives the second spur gear 604 to rotate, and the second spur gear 604 rotates to drive the movable rod 603 to rotate, and the movable rod 603 rotates to drive the lower protection frame 2 to rotate, and the lower protection frame 2 rotates to open the lower part of the protection frame, which is convenient for material transportation through the protection frame.

[0024] When the lower protective frame 2 is reset, the fixed block 606 moves to drive the lower protective frame 2 to reset, and then pushes the lower protective frame 2 to move to the bottom end of the upper protective frame 1. The fixed block 606 moves downward again to contact the lower protective frame 2, thereby fixing the upper protective frame 1 and the lower protective frame 2, so as to ensure smooth transportation of tunnel construction personnel and materials and prevent the protective frame from blocking traffic.

[0025] Please refer to Figures 6 to 8 The scanning mechanism 7 includes an annular groove 701, which is opened on the outer wall of one side of the upper protective frame 1 and the lower protective frame 2. The inner wall of the annular groove 701 is slidably connected with an arc block 702, one end of the arc block 702 is fixedly connected with a vertical plate 703, the top of the arc block 702 is fixedly connected with an infrared scanner 707, the inside of the arc block 702 is rotatably connected with a third spur gear 704 extending from the arc block 702, the outer wall of the vertical plate 703 is installed with a second motor 706, the output end of the second motor 706 is connected with a connecting shaft 705, the third spur gear 704 is fixedly connected to one end of the connecting shaft 705, the top of the vertical plate 703 is provided with a slurry outlet 708, the outer wall of the vertical plate 703 is located above the second motor 706 and is fixedly connected with a fixed cylinder 709, and the inner wall of the fixed cylinder 709 is rotatably connected with a rotating tube 710.

[0026] In this embodiment: the second motor 706 is started, and the operation of the second motor 706 drives the connecting shaft 705 to rotate, and the rotation of the connecting shaft 705 drives the third spur gear 704 to rotate, and the rotation of the third spur gear 704 drives the arc block 702 to slide in the annular groove 701, thereby causing the arc block 702 to move in a circle, and the displacement of the arc block 702 drives the infrared scanner 707 to move, and the infrared scanner 707 scans the internal contour of the tunnel during the movement; when grouting is performed inside the tunnel, the grouting pipe is connected to the rotating tube 710, and then the grouting operation is performed through the slurry outlet 708.

[0027] Please refer to Figures 1 to 3 A first threaded hole is formed at the bottom end of the support block 506 , the first threaded hole matches the first threaded rod 507 , and the first bevel gear 508 meshes with the second bevel gear 509 .

[0028] In this embodiment: rotating the rotating wheel 510 drives the second bevel gear 509 to rotate, the second bevel gear 509 drives the first bevel gear 508 to rotate, the first bevel gear 508 drives the first threaded rod 507 to rotate, and the first threaded rod 507 drives the support block 506 to move.

[0029] Please refer to Figures 1 to 3 First tooth grooves are provided on both sides of the support block 506 , and the first tooth grooves are meshed with the first spur gear 503 .

[0030] In this embodiment, the displacement of the support block 506 drives the first spur gear 503 to rotate, the rotation of the first spur gear 503 drives the rotating rod 504 to rotate, and the rotation of the rotating rod 504 drives the roller 505 to displace.

[0031] Please refer to Figures 4 to 5 The outer walls of both ends of the movable rod 603 are in contact with the inner wall of the movable frame 602 , the outer wall of the fixed block 606 is provided with a second tooth groove, the second tooth groove is meshed with the second spur gear 604 , and the top of the fixed block 606 is provided with a second threaded hole, which is meshed with the second threaded rod 607 .

[0032] In this embodiment: the operation of the first motor 608 drives the second threaded rod 607 to rotate, the rotation of the second threaded rod 607 drives the fixed block 606 to move upward, the fixed block 606 is displaced and separated from the lower protective frame 2, and then the lower protective frame 2 is pushed to move, at this time the movable rod 603 slides in the movable frame 602 until the upper protective frame 1 and the lower protective frame 2 are separated and the movable rod 603 moves to one end of the movable frame 602, the first motor 608 is started to drive the fixed block 606 to move downward, the fixed block 606 is displaced and contacts the second spur gear 604, and then drives the second spur gear 604 to rotate, the second spur gear 604 rotates to drive the movable rod 603 to rotate, and the movable rod 603 rotates to drive the lower protective frame 2 to rotate.

[0033] Please refer to Figures 6 to 8 The outer wall of the arc block 702 is arc-shaped, and the outer wall of the arc block 702 is in contact with the inner wall of the vertical plate 703 . The inner wall of the annular groove 701 is provided with a third tooth groove, and the third tooth groove is meshed with the third spur gear 704 .

[0034] In this embodiment, the second motor 706 drives the connecting shaft 705 to rotate, the connecting shaft 705 drives the third spur gear 704 to rotate, the third spur gear 704 drives the arc block 702 to slide in the vertical plate 703, and the arc block 702 moves in a circle.

[0035] Please refer to Figures 6 to 8 One end of the inner wall of the fixed cylinder 709 is fixedly connected to a limiting ring 8, and the outer wall of the rotating tube 710 is provided with a limiting groove 9, and the outer wall of the limiting ring 8 is in contact with the inner wall of the limiting groove 9.

[0036] In this embodiment, when the rotating tube 710 rotates in the fixing tube 709 , the limiting ring 8 rotates in the limiting groove 9 , thereby positioning the rotating tube 710 .

[0037] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A small-clearance shield tunnel structure holding device with grouting function, characterized in that: The invention comprises a protection frame composed of an upper protection frame (1) and a lower protection frame (2), wherein a reinforcement frame composed of an upper reinforcement frame (3) and a lower reinforcement frame (4) is arranged inside the protection frame, wherein the upper reinforcement frame (3) is fixedly connected to the inner cavity of the upper protection frame (1), and the lower reinforcement frame (4) is fixedly connected to the inner cavity of the lower protection frame (2), the upper protection frame (1) and the lower protection frame (2) are moved by a moving mechanism (5), and the lower protection frame (2) is rotated by a rotating mechanism (6), and the outer walls of the upper protection frame (1) and the lower protection frame (2) are provided with a scanning mechanism (7); The moving mechanism (5) comprises a mounting groove (501), wherein the mounting groove (501) is formed on the outer walls of the upper protection frame (1) and the lower protection frame (2), the inner wall of the mounting groove (501) is fixedly connected to a mounting seat (502), both sides of the mounting seat (502) are symmetrically rotatably connected to a first spur gear (503), the outer wall of the first spur gear (503) is fixedly connected to a rotating rod (504), one end of the rotating rod (504) is mounted with a roller (505), and the interior of the mounting seat (502) is slidably connected to a support block (506) extending to the top of the mounting seat (502), The support block (506) is in contact with the first spur gear (503); the interior of the mounting seat (502) is rotatably connected to a first threaded rod (507) extending into the interior of the support block (506); the bottom end of the first threaded rod (507) is fixedly connected to a first bevel gear (508); the interior of the mounting seat (502) is rotatably connected to an outer wall of the first bevel gear (508); one end of the second bevel gear (509) is fixedly connected to a rotating wheel (510); and the top end of the support block (506) on the upper protection frame (1) is fixedly connected to an insertion rod (511).

2. A small-clearance shield tunnel structure holding device with grouting function according to claim 1, characterized in that: The rotating mechanism (6) comprises a groove (601), wherein the groove (601) is formed at a position where the bottom end of the upper protection frame (1) and the lower protection frame (2) meet, the inner wall of the groove (601) is fixedly connected to a movable frame (602), the top end of the lower protection frame (2) is fixedly connected to a movable rod (603), the movable rod (603) is slidably connected to the inner wall of the movable frame (602), the outer wall of the movable rod (603) is fixedly connected to a second spur gear (604), the outer wall of the upper protection frame (1) is located above the groove (601) and is fixedly connected to a fixed seat (605), the inner wall of the fixed seat (605) is slidably connected to a fixed block (606), the top end of the fixed seat (605) is mounted with a first motor (608), the output end of the first motor (608) is connected to a second threaded rod (607), and the second threaded rod (607) extends into the interior of the fixed block (606).

3. A small-clearance shield tunnel structure holding device with grouting function according to claim 2, characterized in that: The scanning mechanism (7) comprises an annular groove (701), the annular groove (701) being formed on one side outer wall of the upper protection frame (1) and the lower protection frame (2), an inner wall of the annular groove (701) being slidably connected to an arc block (702), one end of the arc block (702) being fixedly connected to a vertical plate (703), a top end of the arc block (702) being fixedly connected to an infrared scanner (707), and an inner portion of the arc block (702) being rotatably connected to a third spur gear (707) extending from the arc block (702). 704), a second motor (706) is installed on the outer wall of the vertical plate (703), an output end of the second motor (706) is connected to a connecting shaft (705), the third spur gear (704) is fixedly connected to one end of the connecting shaft (705), a pulp outlet (708) is provided at the top of the vertical plate (703), a fixed cylinder (709) is fixedly connected to the outer wall of the vertical plate (703) located above the second motor (706), and a rotating tube (710) is rotatably connected to the inner wall of the fixed cylinder (709).

4. A small-clearance shield tunnel structure holding device with grouting function according to claim 1, characterized in that: A first threaded hole is formed at the bottom end of the support block (506), the first threaded hole matches the first threaded rod (507), and the first bevel gear (508) meshes with the second bevel gear (509).

5. The small-clearance shield tunnel structure holding device with grouting function according to claim 1 is characterized in that: First tooth grooves are provided on both sides of the support block (506), and the first tooth grooves are meshed with the first spur gear (503).

6. A small-clearance shield tunnel structure holding device with grouting function according to claim 2, characterized in that: The outer walls at both ends of the movable rod (603) are in contact with the inner wall of the movable frame (602), and the outer wall of the fixed block (606) is provided with a second tooth groove, which is meshed with the second spur gear (604).

7. A small-clearance shield tunnel structure holding device with grouting function according to claim 2, characterized in that: A second threaded hole is formed at the top of the fixing block (606), and the second threaded hole is engaged with the second threaded rod (607).

8. The small-clearance shield tunnel structure retaining device with grouting function according to claim 3 is characterized in that: The outer wall of the arc-shaped block (702) is in an arc shape, and the outer wall of the arc-shaped block (702) fits the inner wall of the vertical plate (703).

9. The small-clearance shield tunnel structure holding device with grouting function according to claim 3 is characterized in that: The inner wall of the annular groove (701) is provided with a third tooth groove, and the third tooth groove is meshed with the third spur gear (704).

10. The small-clearance shield tunnel structure holding device with grouting function according to claim 3, characterized in that: One end of the inner wall of the fixed cylinder (709) is fixedly connected to a limiting ring (8), the outer wall of the rotating tube (710) is provided with a limiting groove (9), and the outer wall of the limiting ring (8) fits the inner wall of the limiting groove (9).

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