A special trolley for assembling a fabricated lining of a tunnel excavated by a method

Abstract

The application relates to the technical field of tunnel trolley technology, in particular to a special trolley for assembling a fabricated lining of a tunnel excavated by a hidden method, which comprises guide rails, track sliding blocks are slidably connected to the surfaces of the guide rails, moving plates are fixedly connected to the surfaces of the track sliding blocks, an assembling mechanism is arranged on the surface of the moving plate, a pushing mechanism is arranged on the surface of the moving plate, and the assembling mechanism comprises an assembling frame. The first motor drives the first sliding block to slide along the guide arc-shaped rod, the second motor drives the grabbing frame to rotate and adjust the angle, the grabbing frame is precisely positioned in the tunnel with multiple degrees of freedom, the second electric push rod drives the electric vacuum suction cup to adsorb the smooth surface of the pipe piece, the traditional mechanical clamping mode is replaced, the space interference problem during the assembling of the capping block and the pipe piece corner damage problem caused by the improper lateral clamping force are effectively avoided, and the efficiency and safety of the assembling operation are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of tunnel trolley technology, specifically a special trolley for assembling prefabricated lining in mined tunnels. Background Technology

[0002] The prefabricated lining assembly trolley for mined tunnels is a large-scale specialized machine used in mined tunnels to precisely assemble prefabricated concrete lining segments into the tunnel wall. It is fundamentally different from the "traditional lining trolley" commonly used for pouring concrete. The traditional trolley is like a huge moving template into which concrete is poured to form the lining; while the task of this assembly trolley is to grab, transport, and precisely assemble the prefabricated concrete components.

[0003] Existing prefabricated lining assembly trolleys for mined tunnels use a gripping method for grasping tasks. In actual use, because the gripping is done from both sides of the lining segments, when assembling the last sealing segment (i.e., the capping block), the mechanical grippers interfere with the already installed adjacent segments, making it difficult for the gripping mechanism to release and retract within the confined space at the end. At the same time, if the lateral clamping force is not properly controlled, stress concentration can easily occur on the side of the segment, leading to concrete chipping or cracking, which greatly reduces the assembly efficiency of the trolley. Therefore, there is an urgent need to design a special trolley for prefabricated lining assembly in mined tunnels to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a special trolley for assembling prefabricated lining in mined tunnels, so as to solve the problem of spatial interference when assembling capping blocks by traditional clamping methods mentioned in the background art, and the problem of segment damage caused by improper lateral clamping force, which greatly reduces the assembly efficiency of the trolley.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A special trolley for assembling prefabricated lining in mined tunnels: comprising a guide rail, a track slider slidably connected to the surface of the guide rail, a movable plate fixedly connected to the surface of the track slider, an assembly mechanism disposed on the surface of the movable plate, a pushing mechanism disposed on the surface of the movable plate, the assembly mechanism comprising an assembly frame, the assembly frame fixedly connected to the surface of the guide rail, a guide arc rod fixedly connected to the surface of the assembly frame, a first slider slidably connected to the surface of the guide arc rod, a fixed rod fixedly connected to the surface of the first slider, a gripping frame rotatably connected to the surface of the fixed rod, a first motor fixedly connected to the surface of the first slider, a first gear fixedly connected to the output shaft of the first motor, an arc-shaped rack fixedly connected to the surface of the assembly frame, and the surface of the fixed rod... A second gear is fixedly connected to the surface of the gripping frame. A second motor is fixedly connected to the surface of the gripping frame. A third gear is fixedly connected to the output shaft of the second motor. A fixed bracket is fixedly connected to the surface of the gripping frame. A second slider is slidably connected to the surface of the gripping frame. An adjusting plate is fixedly connected to the surface of the second slider. A first electric push rod is rotatably connected to the surface of the fixed bracket. The piston rod of the first electric push rod is rotatably connected to the surface of the adjusting plate. A second electric push rod is fixedly connected to the surface of the adjusting plate. A lifting plate is fixedly connected to the piston rod of the second electric push rod. A third motor is fixedly connected to the surface of the lifting plate. A first bidirectional screw is fixedly connected to the output shaft of the third motor. A first square nut is threaded onto the surface of the first bidirectional screw. An electric vacuum suction cup is mounted on the surface of the first square nut.

[0006] Preferably, the pushing mechanism includes a fourth motor, which is fixedly connected to the surface of the movable plate. A second bidirectional lead screw is fixedly connected to the output shaft of the fourth motor. A second square nut is threaded onto the surface of the second bidirectional lead screw. A movable arc frame is fixedly connected to the surface of the second square nut. A third electric push rod is fixedly connected to the surface of the movable arc frame. A positioning push plate is fixedly connected to the piston rod of the third electric push rod.

[0007] Preferably, both the assembly frame and the guide arc rod are arc-shaped. The assembly frame and the guide arc rod slide on the surface of the guide rail via a track slider and a moving plate. Two sets of guide arc rods are provided and are located on both sides of the assembly frame.

[0008] Preferably, the first slider slides in an arc shape on the assembly frame via a guide arc rod, the arc-shaped rack is arc-shaped, the arc-shaped rack and the first gear mesh with each other, the first motor drives the first gear to rotate via an output shaft, and the first motor and the first gear, in conjunction with the arc-shaped rack, drive the first slider to slide on the assembly frame.

[0009] Preferably, the gripper has a double-layer structure. The gripper rotates on the surface of the first slider. The third gear and the second gear mesh with each other. The second motor drives the third gear to rotate through the output shaft. The second motor and the third gear cooperate with the second gear to drive the gripper to rotate on the first slider.

[0010] Preferably, the bottom of the gripping frame is provided with a guide groove, the second slider slides on the guide groove at the bottom of the gripping frame, the adjusting plate slides in an arc shape on the gripping frame via the second slider, and the first electric push rod pushes the adjusting plate to slide via the piston rod.

[0011] Preferably, the second electric push rod pushes the lifting plate up and down through the piston rod, and the third motor drives the first bidirectional screw to rotate through the output shaft. The first bidirectional screw drives the first square nut to slide on the surface of the lifting plate through rotation. There are two sets of the first square nuts, and the sliding directions of the two sets of first square nuts are opposite. The first square nuts drive the electric vacuum suction cup to slide synchronously on the lifting plate.

[0012] Preferably, the movable arc frame slides on the surface of the guide rail along the movable plate and the track slider. The fourth motor drives the second bidirectional lead screw to rotate through the output shaft. The second bidirectional lead screw drives the second square nut to slide on the surface of the movable plate through rotation. There are two sets of the second square nuts, and the sliding directions of the two sets of second square nuts are opposite.

[0013] Preferably, the second square nut drives the movable arc frame to slide on the surface of the movable plate. The movable arc frame is generally arc-shaped. The third electric push rod and the positioning push plate are provided in multiple sets and are evenly distributed in an arc shape on the surface of the movable arc frame.

[0014] Preferably, the third electric push rod and the positioning push plate are staggered, and the third electric push rod pushes the positioning push plate to move in the direction of the piston rod of the third electric push rod through the piston rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This trolley uses a first motor to drive a first slider to slide along a guide arc, and a second motor to drive the gripper frame to rotate and adjust its angle, achieving precise multi-degree-of-freedom positioning of the gripper frame within the tunnel. A second electric push rod drives an electric vacuum suction cup to adsorb the smooth surface of the tunnel segments, replacing the traditional mechanical clamping method. This effectively avoids spatial interference problems during the assembly of the capping blocks and the problem of segment chipping damage caused by improper lateral clamping force, significantly improving the efficiency and safety of the assembly operation.

[0016] 2. This trolley uses a first electric push rod to push an adjustment plate to slide along the bottom guide groove of the gripping frame in an arc shape. In conjunction with the third motor driving the first bidirectional screw to drive two sets of first square nuts to move in opposite directions, the electric vacuum suction cup can be adjusted in both the arc and radial directions of the tube segment. This allows the suction cup to be accurately positioned on the smooth and intact area of ​​the tube segment surface, effectively avoiding damaged or embedded parts, and significantly improving the stability and reliability of vacuum adsorption. Attached Figure Description

[0017] Figure 1 This is a frontal perspective view of the structure of the present invention; Figure 2 This is a bottom view of the structure of the present invention; Figure 3 This is a front view of the assembly frame structure of the present invention. Figure 4 This is a frontal and bottom-view perspective schematic diagram of the assembly frame structure of the present invention; Figure 5 For the present invention Figure 1 Enlarged structural diagram at point A; Figure 6 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 7 For the present invention Figure 4 Enlarged structural diagram at point C; Figure 8 This is a frontal sectional perspective view of the gripping frame structure of the present invention.

[0018] In the diagram: 1. Guide rail; 11. Track slider; 12. Moving plate; 2. Assembly frame; 21. Guide arc rod; 22. First slider; 23. Fixed rod; 24. Gripping frame; 25. Arc rack; 26. First motor; 27. First gear; 3. Second gear; 31. Second motor; 32. Third gear; 33. Fixed bracket; 34. Second slider; 35. Adjusting plate; 36. First electric push rod; 37. Second electric push rod; 38. Lifting plate; 4. Third motor; 41. First bidirectional screw; 42. First square nut; 43. Electric vacuum suction cup; 44. Fourth motor; 45. Second bidirectional lead screw; 46. Second square nut; 47. Moving arc frame; 48. Third electric push rod; 49. Positioning push plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-8 One embodiment provided by the present invention: A special trolley for assembling prefabricated lining in a mined tunnel includes a guide rail 1, a track slider 11 slidably connected to the surface of the guide rail 1, a movable plate 12 fixedly connected to the surface of the track slider 11, an assembly mechanism on the surface of the movable plate 12, and a pushing mechanism on the surface of the movable plate 12. The assembly mechanism includes an assembly frame 2, which is fixedly connected to the surface of the guide rail 1. A guide arc rod 21 is fixedly connected to the surface of the assembly frame 2. A first slider 22 is slidably connected to the surface of the guide arc rod 21. A fixing rod 23 is fixedly connected to the surface of the first slider 22. A gripping frame 24 is rotatably connected to the surface of the fixing rod 23. A first motor 26 is fixedly connected to the surface of the first slider 22. A first gear 27 is fixedly connected to the output shaft of a motor 26. An arc-shaped rack 25 is fixedly connected to the surface of the assembly frame 2. A second gear 3 is fixedly connected to the surface of the fixing rod 23. A second motor 31 is fixedly connected to the surface of the gripping frame 24. A third gear 32 is fixedly connected to the output shaft of the second motor 31. A fixing bracket 33 is fixedly connected to the surface of the gripping frame 24. A second slider 34 is slidably connected to the surface of the gripping frame 24. An adjusting plate 35 is fixedly connected to the surface of the second slider 34. A first electric push rod 36 is rotatably connected to the surface of the fixing bracket 33. The piston rod of the first electric push rod 36 is rotatably connected to the surface of the adjusting plate 35. A first electric push rod 36 is rotatably connected to the surface of the adjusting plate 35. The assembly mechanism includes a second electric push rod 37, with a lifting plate 38 fixedly connected to its piston rod. A third motor 4 is fixedly connected to the surface of the lifting plate 38, and a first bidirectional screw 41 is fixedly connected to the output shaft of the third motor 4. A first square nut 42 is threaded onto the surface of the first bidirectional screw 41, and an electric vacuum suction cup 43 is mounted on the surface of the first square nut 42. This assembly mechanism primarily grips the sealed tube segments and, in conjunction with the thrust of the top-mounted mechanism, assembles the sealed tube segments into suitable positions. However, this assembly mechanism does not use clamping for gripping; instead, the piston of the second electric push rod 37 drives the electric vacuum suction cup 43 to move, thereby causing multiple sets of electric vacuum suction cups 43 to adhere to the sealed tube segments. On the smooth surface of the tube segment, the gripping frame 24 slides and rotates on the assembly frame 2 to adjust the position of the sealed tube segment on the gripping frame 24. After reaching the installation position, the suction force of the electric vacuum suction cup 43 is canceled, and the sealed tube segment is pushed to the installation position by the pushing mechanism. This avoids the spatial interference problem that exists when assembling the top block and the problem of tube segment damage caused by improper lateral clamping force, which greatly improves the assembly efficiency. In addition, the position of the electric vacuum suction cup 43 on the gripping frame 24 can be adjusted appropriately, so as to move the electric vacuum suction cup 43 to the smooth area of ​​the sealed tube segment, avoiding the electric vacuum suction cup 43 in the damaged area and improving the stability of the electric vacuum suction cup 43 during the adsorption process.

[0021] Furthermore, the jacking mechanism includes a fourth motor 44, which is fixedly connected to the surface of the moving plate 12. A second bidirectional lead screw 45 is fixedly connected to the output shaft of the fourth motor 44. A second square nut 46 is threaded onto the surface of the second bidirectional lead screw 45. A moving arc frame 47 is fixedly connected to the surface of the second square nut 46. A third electric push rod 48 is fixedly connected to the surface of the moving arc frame 47. A positioning push plate 49 is fixedly connected to the piston rod of the third electric push rod 48. When the assembly frame 2 adjusts the position of the closed tube segment, the jacking mechanism moves to one side of the assembly frame 2. When jacking, it moves to the back of the closed tube segment, ready to jack at any time, thereby ensuring the stability of the closed tube segment during top-to-top installation and avoiding affecting the positioning of the closed tube segment during installation.

[0022] Furthermore, both the assembly frame 2 and the guide arc rod 21 are arc-shaped. The assembly frame 2 and the guide arc rod 21 slide on the surface of the guide rail 1 via the track slider 11 and the moving plate 12. There are two sets of guide arc rods 21, which are located on both sides of the assembly frame 2.

[0023] Furthermore, the first slider 22 slides in an arc shape on the assembly frame 2 via the guide arc rod 21, the arc rack 25 is arc-shaped, the arc rack 25 and the first gear 27 mesh with each other, the first motor 26 drives the first gear 27 to rotate through the output shaft, and the first motor 26 and the first gear 27 cooperate with the arc rack 25 to drive the first slider 22 to slide on the assembly frame 2.

[0024] Furthermore, the gripper 24 has a double-layer structure. The gripper 24 rotates on the surface of the first slider 22. The third gear 32 meshes with the second gear 3. The second motor 31 drives the third gear 32 to rotate through the output shaft. The second motor 31 and the third gear 32 cooperate with the second gear 3 to drive the gripper 24 to rotate on the first slider 22. The second gear 3 is fixedly installed on the fixed rod 23 as a sun gear, and the third gear 32 revolves around it as a planetary gear. This transmission form has a compact structure and can transmit a large torque, ensuring that the gripper 24 can still flexibly adjust the pitch angle under load, so that the bottom suction cup can perfectly fit the surface of the tube segment with different curvatures.

[0025] Furthermore, a guide groove is provided at the bottom of the gripping frame 24, and the second slider 34 slides on the guide groove at the bottom of the gripping frame 24. The adjusting plate 35 slides in an arc shape on the gripping frame 24 through the second slider 34, and the first electric push rod 36 pushes the adjusting plate 35 to slide through the piston rod. The arc sliding trajectory of the adjusting plate 35 is consistent with the arc of the gripping frame 24, so that the electric vacuum suction cup 43 installed on the adjusting plate 35 is always adjusted along the circumferential direction of the tube segment when it moves.

[0026] Furthermore, the second electric push rod 37 pushes the lifting plate 38 up and down through the piston rod, and the third motor 4 drives the first bidirectional screw 41 to rotate through the output shaft. The first bidirectional screw 41 drives the first square nut 42 to slide on the surface of the lifting plate 38 through rotation. There are two sets of the first square nut 42, and the sliding directions of the two sets of the first square nut 42 are opposite. The first square nut 42 drives the electric vacuum suction cup 43 to slide synchronously on the lifting plate 38. By driving the two sets of first square nuts 42 to move synchronously in opposite directions through the first bidirectional screw 41, the distance between the two sets of electric vacuum suction cups 43 can be precisely adjusted to accommodate closed tubes of different widths. The lifting plate 38 can perform lifting and lowering movements under the drive of the second electric push rod 37. On the one hand, it descends before adsorption to make the suction cup adhere to the tube. On the other hand, it rises slightly after adsorption to make the tube detach from the storage rack, providing a safe space for subsequent rotation and movement, and avoiding scratching of the tube with the surrounding structure.

[0027] Furthermore, the movable arc frame 47 slides on the surface of the guide rail 1, following the movable plate 12 and the track slider 11. The fourth motor 44 drives the second bidirectional lead screw 45 to rotate through the output shaft. The second bidirectional lead screw 45 drives the second square nut 46 to slide on the surface of the movable plate 12 through rotation. There are two sets of the second square nut 46, and the sliding directions of the two sets of second square nuts 46 are opposite. In the non-working state, the movable arc frame 47 is separated to both sides, leaving sufficient operating space for the rotation and movement of the gripping frame 24 and avoiding motion interference. In the working state, the movable arc frame 47 closes in the middle and is precisely positioned on the back of the closed tube segment, ready to perform the jacking operation.

[0028] Furthermore, the second square nut 46 drives the movable arc frame 47 to slide on the surface of the movable plate 12. The movable arc frame 47 is generally arc-shaped. Multiple sets of third electric push rods 48 and positioning push plates 49 are provided and are evenly distributed in an arc shape on the surface of the movable arc frame 47. The arc-shaped contour of the movable arc frame 47 is consistent with the curvature of the inner wall of the tunnel lining, so that multiple sets of third electric push rods 48 distributed on its surface can simultaneously press against the back of the closed segment from different angles.

[0029] Furthermore, the third electric push rod 48 and the positioning push plate 49 are staggered. The third electric push rod 48 pushes the positioning push plate 49 to move in the direction of the piston rod of the third electric push rod 48 through the piston rod. The staggered installation of 49 allows adjacent push plates to form an overlapping support area after extension, forming continuous surface support for the back of the sealed tube segment rather than discrete point support, which greatly improves the stability and uniformity of force distribution during jacking. The contact surface of the positioning push plate 49 is usually covered with rubber or nylon cushioning material, which can increase friction to prevent slippage during jacking and protect the surface of the tube segment from damage, ensuring that the capping block can slide smoothly and accurately into the predetermined installation position.

[0030] Working principle: The first motor 26 drives the first gear 27 to mesh along the arc-shaped rack 25, which in turn drives the first slider 22 to slide in an arc on the guide arc rod 21, achieving the initial positioning of the gripping frame 24. The second motor 31 drives the third gear 32 to mesh with the second gear 3, which drives the gripping frame 24 to rotate and adjust the pitch angle. This mechanism uses vacuum adsorption instead of mechanical clamping. The second electric push rod 37 pushes the lifting plate 38 to descend, so that the electric vacuum suction cup 43 adheres to the smooth surface of the tube segment and adsorbs it. After adsorption, the first motor 26 and the second motor 31 are restarted, so that the gripping frame 24 transports the tube segment to the installation position by rotating and moving. At this time, the fourth motor 44 drives the second bidirectional lead screw 45 to rotate, so that the second square nut 46 drives the moving arc frame 47 to close from both sides to the back of the tube segment. The third electric push rod 48 pushes the positioning push plate 49 to hold the tube segment, and at the same time the suction cup is released. The push plate pushes the tube segment smoothly into the installation position, which effectively solves the problems of spatial interference and tube segment damage during the assembly of the capping block, and greatly improves the assembly efficiency.

[0031] The first electric push rod 36 pushes the adjusting plate 35 to slide in an arc shape in the guide groove at the bottom of the gripping frame 24 through the second slider 34, thereby adjusting the suction cup along the arc of the tube segment. Then, the third motor 4 drives the first bidirectional screw 41 to rotate, causing the two sets of first square nuts 42 to slide in opposite directions, thereby adjusting the suction cup spacing again so that it is always aligned with the smooth and intact area of ​​the tube segment surface, effectively avoiding the location of damaged or embedded parts, thus ensuring the reliability and stability of the adsorption process.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A special trolley for assembling prefabricated lining in mined tunnels, characterized in that: The system includes a guide rail (1), on which a track slider (11) is slidably connected. A movable plate (12) is fixedly connected to the surface of the track slider (11). An assembly mechanism is provided on the surface of the movable plate (12), and a pushing mechanism is provided on the surface of the movable plate (12). The assembly mechanism includes an assembly frame (2), which is fixedly connected to the surface of the guide rail (1). A guide arc rod (21) is fixedly connected to the surface of the assembly frame (2), and a sliding connection is provided on the surface of the guide arc rod (21). A first slider (22) is attached, a fixed rod (23) is fixedly connected to the surface of the first slider (22), a gripping frame (24) is rotatably connected to the surface of the fixed rod (23), a first motor (26) is fixedly connected to the surface of the first slider (22), a first gear (27) is fixedly connected to the output shaft of the first motor (26), an arc-shaped rack (25) is fixedly connected to the surface of the assembly frame (2), a second gear (3) is fixedly connected to the surface of the fixed rod (23), and the gripping frame (24) is... A second motor (31) is fixedly connected to the surface of the gripping frame (24), a third gear (32) is fixedly connected to the output shaft of the second motor (31), a fixed bracket (33) is fixedly connected to the surface of the gripping frame (24), a second slider (34) is slidably connected to the surface of the gripping frame (24), an adjusting plate (35) is fixedly connected to the surface of the second slider (34), a first electric push rod (36) is rotatably connected to the surface of the fixed bracket (33), the piston rod of the first electric push rod (36) is rotatably connected to the surface of the adjusting plate (35), a second electric push rod (37) is fixedly connected to the surface of the adjusting plate (35), a lifting plate (38) is fixedly connected to the piston rod of the second electric push rod (37), a third motor (4) is fixedly connected to the surface of the lifting plate (38), a first bidirectional screw (41) is fixedly connected to the output shaft of the third motor (4), a first square nut (42) is threadedly connected to the surface of the first bidirectional screw (41), and an electric vacuum suction cup (43) is installed on the surface of the first square nut (42).

2. The special trolley for assembling prefabricated lining in a mined tunnel according to claim 1, characterized in that: The pushing mechanism includes a fourth motor (44), which is fixedly connected to the surface of the moving plate (12). A second bidirectional lead screw (45) is fixedly connected to the output shaft of the fourth motor (44). A second square nut (46) is threaded onto the surface of the second bidirectional lead screw (45). A moving arc frame (47) is fixedly connected to the surface of the second square nut (46). A third electric push rod (48) is fixedly connected to the surface of the moving arc frame (47). A positioning push plate (49) is fixedly connected to the piston rod of the third electric push rod (48).

3. The special trolley for assembling prefabricated lining in a mined tunnel according to claim 1, characterized in that: The assembly frame (2) and the guide arc rod (21) are both arc-shaped. The assembly frame (2) and the guide arc rod (21) slide on the surface of the guide rail (1) through the track slider (11) and the moving plate (12). There are two sets of guide arc rods (21), which are arranged on both sides of the assembly frame (2).

4. The special trolley for assembling prefabricated lining in a mined tunnel according to claim 1, characterized in that: The first slider (22) slides in an arc shape on the assembly frame (2) via the guide arc rod (21). The arc rack (25) is arc-shaped and meshes with the first gear (27). The first motor (26) drives the first gear (27) to rotate via the output shaft. The first motor (26) and the first gear (27) work together with the arc rack (25) to drive the first slider (22) to slide on the assembly frame (2).

5. The special trolley for assembling prefabricated lining in a mined tunnel according to claim 1, characterized in that: The gripper (24) has a double-layer structure. The gripper (24) rotates on the surface of the first slider (22). The third gear (32) and the second gear (3) mesh with each other. The second motor (31) drives the third gear (32) to rotate through the output shaft. The second motor (31) and the third gear (32) cooperate with the second gear (3) to drive the gripper (24) to rotate on the first slider (22).

6. The special trolley for assembling prefabricated lining in a mined tunnel according to claim 1, characterized in that: The bottom of the gripping frame (24) is provided with a guide groove. The second slider (34) slides on the guide groove at the bottom of the gripping frame (24). The adjustment plate (35) slides in an arc shape on the gripping frame (24) through the second slider (34). The first electric push rod (36) pushes the adjustment plate (35) to slide through the piston rod.

7. The special trolley for assembling prefabricated lining in a mined tunnel according to claim 1, characterized in that: The second electric push rod (37) pushes the lifting plate (38) up and down through the piston rod. The third motor (4) drives the first bidirectional screw (41) to rotate through the output shaft. The first bidirectional screw (41) drives the first square nut (42) to slide on the surface of the lifting plate (38) through rotation. There are two sets of the first square nut (42), and the sliding directions of the two sets of first square nuts (42) are opposite. The first square nut (42) drives the electric vacuum suction cup (43) to slide synchronously on the lifting plate (38).

8. A special trolley for assembling prefabricated lining in a mined tunnel according to claim 2, characterized in that: The movable arc frame (47) slides on the surface of the guide rail (1) following the movable plate (12) and the track slider (11). The fourth motor (44) drives the second bidirectional lead screw (45) to rotate through the output shaft. The second bidirectional lead screw (45) drives the second square nut (46) to slide on the surface of the movable plate (12) by rotation. There are two sets of the second square nut (46), and the sliding directions of the two sets of second square nuts (46) are opposite.

9. A special trolley for assembling prefabricated lining in a mined tunnel according to claim 2, characterized in that: The second square nut (46) drives the movable arc frame (47) to slide on the surface of the movable plate (12). The movable arc frame (47) is generally arc-shaped. The third electric push rod (48) and the positioning push plate (49) are provided in multiple sets and are evenly distributed in an arc shape on the surface of the movable arc frame (47).

10. A special trolley for assembling prefabricated lining in a mined tunnel according to claim 2, characterized in that: The third electric push rod (48) and the positioning push plate (49) are staggered. The third electric push rod (48) pushes the positioning push plate (49) to move in the direction of the piston rod of the third electric push rod (48) through the piston rod.

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