Tunnel multi-arch frame pre-assembly device

Abstract

The present application relates to the technical field of arch assembly, and specifically discloses a tunnel multi-arch pre-assembly device, which comprises a bottom plate, a support plate horizontally arranged on the bottom plate, a rotating shaft horizontally arranged in the middle of the support plate, a first driving device for driving the rotating shaft to rotate, a placement table horizontally arranged at one end of the support plate, baffles arranged on both sides of the support plate, connecting holes arranged on the baffles, and a pair of pushing devices arranged on both sides of the support plate respectively; the support plate is used for supporting arc-shaped arches, the two ends of each arch are detachably connected with the connecting holes on the baffles, arches are arranged on both sides of the support plate, and a plurality of arches are distributed along the length direction of the support plate; and the pushing devices are used for pushing the arches to the placement table. The tunnel multi-arch pre-assembly device can efficiently and accurately perform the assembly operation of the multi-arches.

Description

Technical Field

[0001] This invention relates to the technical field of arch frame assembly, and more specifically, to a pre-assembly device for multiple arch frames in a tunnel. Background Technology

[0002] In tunnel construction, to ensure structural stability, it is necessary to install an integral arch frame composed of multiple individual arch frames on the inner wall of the tunnel. Currently, to improve construction efficiency, a common practice is to pre-assemble multiple individual arch frames into a multi-arch frame outside the tunnel, and then transfer it inside the tunnel to connect with embedded parts. This process can effectively improve the installation efficiency of the arch frame in the tunnel.

[0003] However, the long dimensions and heavy weight of the arch frame's curved structure present significant challenges for external tunnel assembly. Traditional methods rely on cranes for hoisting and positioning, requiring multiple workers and often resulting in loose connections due to the difficulty in achieving millimeter-level precision control, thus affecting subsequent installation efficiency inside the tunnel. According to the "Technical Specifications for Highway Tunnel Construction," arch frame installation must ensure accurate positioning and secure connections, but crane operation struggles to meet this requirement, especially when handling the three-dimensional positioning of curved structures, easily leading to cumulative errors. Furthermore, this increases the labor intensity and physical exertion of workers. Therefore, a device capable of efficiently assembling arch frames is needed. Summary of the Invention

[0004] The purpose of this invention is to provide a pre-assembly device for multiple tunnel arch frames, which can efficiently and accurately perform the assembly operation of multiple arch frames.

[0005] This invention is achieved through the following technical solution: The tunnel multi-arch frame pre-assembly device of this invention includes a base plate, a support plate horizontally disposed on the base plate, a rotating shaft horizontally disposed in the middle of the support plate, a first driving device for driving the rotating shaft to rotate, a platform horizontally disposed at one end of the support plate, baffles disposed on both sides of the support plate, connecting holes disposed on the baffles, and a pair of pushing devices respectively disposed on both sides of the support plate; the support plate is used to support the arc-shaped arch frame, the two ends of the arch frame are detachably connected to the connecting holes on the baffles, arch frames are provided on both sides of the support plate, and multiple arch frames are distributed along the length direction of the support plate; the pushing device is used to push the arch frame onto the platform.

[0006] Furthermore, the first driving device includes a pair of support columns respectively vertically disposed at both ends of the base plate, a first driven wheel disposed at the end of the rotating shaft away from the platform, a first motor fixedly disposed on the base plate, a first driving wheel disposed on the output shaft of the first motor, and a first transmission belt for connecting the first driving wheel and the first driven wheel; both ends of the rotating shaft are rotatably connected to the pair of support columns respectively.

[0007] Furthermore, the pushing device includes a pair of support rods respectively disposed at both ends of the support plate, a sliding rod connected to the upper end of the pair of support rods, a screw rotatably connected to the pair of support rods, a push block threadedly connected to the screw, and a second driving device for driving the screw to rotate; the lower end of the support rod is connected to the base plate, and the push block is disposed between the pair of support rods; both ends of the sliding rod are fixedly connected to the pair of support rods respectively, and the push block is slidably connected to the sliding rod.

[0008] Furthermore, the second driving device includes a second driven wheel located at one end of the screw away from the platform, a second motor fixedly mounted on one of the support rods, a second driving wheel located on the output shaft of the second motor, and a second transmission belt for connecting the second driving wheel and the second driven wheel.

[0009] Furthermore, the lower end of the support rod is hinged to the upper side of the base plate; the pushing device also includes a support plate for connecting a pair of the support rods, and a third driving device for driving the support rods to rotate about their lower ends; the support plate is used to support the arch frame located below the support plate.

[0010] Furthermore, the third driving device includes a telescopic cylinder disposed on the base plate; the cylinder body of the telescopic cylinder is hinged to the base plate, and the movable end of the telescopic cylinder is hinged to the support plate.

[0011] Furthermore, auxiliary plates are provided at the center of both sides of the support plate, the auxiliary plates are arranged perpendicular to the support plate, and the length direction of the auxiliary plates is parallel to the length direction of the support plate; multiple reinforcing ribs are provided between the auxiliary plates and the support plate.

[0012] Furthermore, the auxiliary plate has an arc-shaped pad on the side away from the support plate, the length direction of the pad is parallel to the length direction of the support plate, and the pad abuts against the inner side of the arch frame.

[0013] Furthermore, the shelf includes a horizontally arranged shelf, side panels on both sides of the shelf, and a support column for supporting the shelf; there is a gap between the shelf and the support plate; when the support plate is in a horizontal state, the upper surface of the shelf and the upper surface of the support plate are at the same height.

[0014] The technical solution of the present invention has at least the following advantages and beneficial effects: In the tunnel multi-arch frame pre-assembly device of the present invention, a hoisting device such as a crane is used to hoist the arc-shaped arch frame onto the support plate. Then, a pushing device is used to slowly push the arch frame to one end of the support plate near the platform. Bolts or other connecting parts are then used to connect the end of the arch frame to the baffles on both sides of the support plate. Next, a new arch frame is hoisted onto the support plate using the hoisting device, and the pushing device is used to push the new arch frame to the already fixed arch frame, ensuring they are tightly fitted together. Bolts or other connecting parts are then used to connect the end of the arch frame to the baffles on both sides of the support plate. This operation is repeated until a suitable number of arch frames are tightly fitted together. Together, the first drive device is used to drive the support plate to rotate 180 degrees, and then the above steps are repeated to continue hoisting the new arch frame onto the support plate and connecting it with the baffle on the support plate. At the same time, workers can enter the underside of the support plate to connect the arch frames on the underside of the support plate (bolt connection or welding, etc.), so that multiple arch frames are connected to each other to form multiple arch frames. Then, the first drive device is used to drive the support plate to rotate 180 degrees, and the pushing device is used to push the multiple arch frames onto the platform. Then, the new arch frame is hoisted onto the support plate (the arch frames on the underside of the support plate are connected at the same time). The arch frames on the platform need to be transferred to the tunnel for installation later. This way, the support plate is only in a state of unbalanced force on both sides during the first rotation. During subsequent rotations, the weight on both sides is equal, so the operation of the support plate is very stable. When connecting the arch frame and the baffle, as well as connecting the arch frames with each other, the height of the arch frame that needs to be operated is not high. Therefore, it is very convenient for workers to perform the connection operation. The operation is simple and the connection efficiency is high. In addition, the arch frame is fixed first and then assembled, so the assembly accuracy is also higher. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a pre-assembled tunnel multi-arch frame device according to an embodiment of the present invention. Figure 2 for Figure 1 A sectional view along the vertical direction; Figure 3 A schematic diagram of the two states of the pre-assembly device for multiple tunnel arch frames provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure after the base plate and support plate are combined, as provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the base plate portion provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the support plate portion provided in an embodiment of the present invention; Figure 7 This is a structural schematic diagram of the arch frame portion provided in an embodiment of the present invention; Figure 8 for Figure 5 Enlarged view of section A.

[0016] Icons: 10-Base plate, 11-Support plate, 12-Rotating shaft, 13-First drive device, 131-Support column, 132-First driven wheel, 133-First motor, 134-First driving wheel, 135-First transmission belt, 14-Baffle, 15-Auxiliary plate, 16-Reinforcing rib, 17-Pad plate, 20-Placement platform, 21-Placement board, 22-Enclosure panel, 23-Support column, 30-Pushing device, 31-Support rod, 32-Slide rod, 33-Screw, 34-Push block, 35-Second drive device, 351-Second driven wheel, 352-Second motor, 353-Second driving wheel, 354-Second transmission belt, 36-Pattern, 37-Third drive device, 371-Telescopic cylinder, 40-Arch frame. Detailed Implementation

[0017] Example The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 - Appendix Figure 8As shown, the tunnel multi-arch frame pre-assembly device of this embodiment includes a base plate 10, a support plate 11 horizontally disposed on the base plate 10, a rotating shaft 12 horizontally disposed in the middle of the support plate 11, a first driving device 13 for driving the rotating shaft 12 to rotate, a platform 20 horizontally disposed at one end of the support plate 11, baffles 14 disposed on both sides of the support plate 11, connecting holes disposed on the baffles 14, and a pair of pushing devices 30 respectively disposed on both sides of the support plate 11; the support plate 11 is used to support the arc-shaped arch frame 40, the two ends of the arch frame 40 are detachably connected to the connecting holes on the baffles 14, the support plate 11 is provided on both sides, and multiple arch frames 40 are distributed along the length direction of the support plate 11; the pushing device 30 is used to push the arch frame 40 onto the platform 20. Specifically, during use, a hoist or other lifting device is used to hoist the arched frame 40 onto the support plate 11. Then, a pushing device 30 is used to slowly push the arched frame 40 to one end of the support plate 11 near the platform 20. Bolts or other connectors are then used to connect the end of the arched frame 40 to the baffles 14 on both sides of the support plate 11. The hoisting device is then used to hoist a new arched frame 40 onto the support plate 11, and the pushing device 30 is used to push the new arched frame 40 to the already fixed arched frame 40, ensuring they are tightly fitted together. Bolts or other connectors are then used to connect the end of the arched frame 40 to the baffles 14 on both sides of the support plate 11. This process is repeated. Continue until a suitable number of arch frames 40 are tightly pressed together. Then, use the first drive device 13 to drive the support plate 11 to rotate 180 degrees. Repeat the above steps to hoist new arch frames 40 onto the support plate 11 and connect them to the baffles 14 on the support plate 11. At the same time, a person can enter under the support plate 11 to connect the arch frames 40 on the underside of the support plate 11 (bolt connection or welding, etc.), so that multiple arch frames 40 are connected to each other to form multiple arch frames 40. Then, use the first drive device 13 to drive the support plate 11 to rotate 180 degrees, and use the pushing device 30 to push the multiple arch frames 40 onto the platform 20 (as shown in the attached figure). Figure 3 As shown), the new arch frame 40 is then hoisted onto the support plate 11 (the arch frame 40 on the underside of the support plate 11 is simultaneously connected). The arch frame 40 on the platform 20 will later be transferred to the tunnel for installation. In this way, the support plate 11 is only in a state of unbalanced force on both sides during the first rotation. During subsequent rotations, the weight on both sides is equal, so the operation of the support plate 11 is very stable. When connecting the arch frame 40 to the baffle 14, and when connecting the arch frames 40 to each other, the height at which the arch frame 40 needs to be operated is not high. Therefore, it is very convenient for workers to perform the connection operation. The operation is simple and the connection efficiency is high. Furthermore, the arch frame 40 is fixed first and then assembled, so the assembly accuracy is also higher.

[0018] In this embodiment, the first driving device 13 includes a pair of support columns 131 vertically mounted at both ends of the base plate 10, a first driven wheel 132 located at the end of the rotating shaft 12 away from the platform 20, a first motor 133 fixedly mounted on the base plate 10, a first driving wheel 134 located on the output shaft of the first motor 133, and a first transmission belt 135 connecting the first driving wheel 134 and the first driven wheel 132. Both ends of the rotating shaft 12 are rotatably connected to the pair of support columns 131. Specifically, the first motor 133 drives the driving wheel, transmission belt, and driven wheel to rotate, thereby driving the rotating shaft 12 and the support plate 11 to rotate at any angle. In addition to using a transmission belt, sprockets, chains, gears, etc., can also be used. Furthermore, for the large-volume and heavy arch frame 40, hydraulic pressure can be used to drive the rotating shaft 12 to reciprocate 180 degrees.

[0019] The pushing device 30 in this embodiment includes a pair of support rods 31 respectively disposed at both ends of the support plate 11, a sliding rod 32 connected to the upper end of the pair of support rods 31, a screw 33 rotatably connected to the pair of support rods 31, a push block 34 threadedly connected to the screw 33, and a second driving device 35 for driving the screw 33 to rotate; the lower end of the support rod 31 is connected to the base plate 10, and the push block 34 is disposed between the pair of support rods 31; both ends of the sliding rod 32 are fixedly connected to the pair of support rods 31, and the push block 34 is slidably connected to the sliding rod 32. The second driving device 35 includes a second driven wheel 351 disposed at the end of the screw 33 away from the platform 20, a second motor 352 fixedly disposed on one of the support rods 31, a second driving wheel 353 disposed on the output shaft of the second motor 352, and a second transmission belt 354 for connecting the second driving wheel 353 and the second driven wheel 351. Specifically, the second motor 352 drives the screw 33 to rotate, thereby causing the push block 34 to move along the screw 33. The push block 34 then pushes the arch frame 40 to move on the support plate 11. The push blocks 34 on both sides of the support plate 11 move synchronously, achieving precise positioning of the arch frame 40. Therefore, both second motors 352 need to be high-power servo motors capable of precise control. Alternatively, a single second motor 352 can be used, which drives both screws 33 to rotate synchronously via a transmission belt (or chain and sprocket). In addition to using the screw 33 to push the push block 34, conventional power mechanisms such as hydraulic cylinders and linear motors can also be used.

[0020] In this embodiment, the lower end of the support rod 31 is hinged to the upper side of the base plate 10; the pushing device 30 also includes a support plate 36 for connecting a pair of support rods 31, and a third driving device 37 for driving the support rods 31 to rotate around their lower ends; the support plate 36 is used to support the arch frame 40 located below the support plate 11. The third driving device 37 includes a telescopic cylinder 371 disposed on the base plate 10; the cylinder body of the telescopic cylinder 371 is hinged to the base plate 10, and the movable end of the telescopic cylinder 371 is hinged to the support plate 36. Specifically, the push plate 36 can provide temporary support for the arch frame 40 on the lower side of the support plate 11. During the support process, the arch frame 40 can be better connected. Therefore, when the support plate 11 rotates, the push plate 36 needs to be separated from the arch frame 40 first. The telescopic cylinder 371 can be used to pull the push plate 36 and the support rod 31, so that the push plate 36 and the support rod 31 are away from the support plate 11 and the arch frame 40, so as to avoid hindering the rotation of the support plate 11 and the arch frame 40. After the support plate 11 has rotated, the telescopic cylinder 371 pushes the push plate 36 and the support rod 31 back to the support plate 11. The push plate 36 abuts against the lower side of the arch frame 40. At this time, the push block 34 on the support rod 31 can push the arch frame 40 on the upper side of the support plate 11 to move on the support plate 11.

[0021] In this embodiment, auxiliary plates 15 are provided on both sides of the support plate 11 at the middle. The auxiliary plates 15 are perpendicular to the support plate 11, and their length direction is parallel to the length direction of the support plate 11. Multiple reinforcing ribs 16 are provided between the auxiliary plates 15 and the support plate 11. An arc-shaped pad 17 is provided on the side of the auxiliary plate 15 away from the support plate 11. The length direction of the pad 17 is parallel to the length direction of the support plate 11, and the pad 17 abuts against the inner side of the arch frame 40. Specifically, the pad 17 and the auxiliary plates 15 can support the middle of the arch frame 40, preventing the large-span arch frame 40 from bending and providing better support and positioning for the arch frame 40.

[0022] The platform 20 in this embodiment includes a horizontally arranged platform 21, surrounding panels 22 on both sides of the platform 21, and support columns 23 for supporting the platform 21. A gap exists between the platform 21 and the support plate 11. When the support plate 11 is horizontal, the upper surface of the platform 21 and the upper surface of the support plate 11 are at the same height. Specifically, the assembled multi-arch frame 40 is temporarily placed on the platform 21. Later, a crane and a transport vehicle are used to transport it inside the tunnel for installation. Alternatively, the platform 21 can be directly replaced by a transport vehicle, meaning the assembled multi-arch frame 40 on the support plate 11 can be directly transferred to the transport vehicle and transported away.

[0023] In summary, the tunnel multi-arch frame pre-assembly device of this embodiment uses a crane or other hoisting device to hoist the arc-shaped arch frame 40 onto the support plate 11. Then, a pushing device 30 is used to slowly push the arch frame 40 to one end of the support plate 11 near the platform 20. Bolts or other connectors are then used to connect the end of the arch frame 40 to the baffles 14 on both sides of the support plate 11. The hoisting device is then used to hoist new arch frames 40 onto the support plate 11, and the pushing device 30 is used to push the new arch frames 40 to the already fixed arch frames 40, ensuring they are tightly fitted together. Bolts or other connectors are then used to connect the end of the arch frame 40 to the baffles 14 on both sides of the support plate 11. This operation is repeated until a suitable number of arch frames 40 are tightly fitted together. Finally, the first driving device is used... The first drive device 13 drives the support plate 11 to rotate 180 degrees, and then repeats the above steps to hoist the new arch frame 40 onto the support plate 11 and connect it with the baffle 14 on the support plate 11. At the same time, a person can enter the underside of the support plate 11 to connect the arch frame 40 on the underside of the support plate 11 (bolt connection or welding, etc.) so that multiple arch frames 40 are connected to each other to form multiple arch frames 40. Then, the first drive device 13 drives the support plate 11 to rotate 180 degrees, and the pushing device 30 pushes the multiple arch frames 40 onto the platform 20. Then, the new arch frame 40 is hoisted onto the support plate 11 (the arch frame 40 on the underside of the support plate 11 is connected at the same time). The arch frame 40 on the platform 20 needs to be transferred to the tunnel for installation later. In this way, the support plate 11 is in an unbalanced state on both sides only when it rotates for the first time. In subsequent rotations, the weight on both sides is equal, so the operation of the support plate 11 is very stable. When connecting the arch frame 40 and the baffle 14, as well as connecting the arch frames 40 to each other, the height of the arch frame 40 to be operated is not high. Therefore, it is very convenient for workers to perform the connection operation. The operation is simple and the connection efficiency is high. In addition, the arch frame 40 is fixed first and then assembled, so the assembly accuracy is also higher.

[0024] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pre-assembly device for multiple tunnel arch frames, characterized in that: Includes a base plate (10), a support plate (11) horizontally disposed on the base plate (10), a rotating shaft (12) horizontally disposed in the middle of the support plate (11), a first driving device (13) for driving the rotating shaft (12) to rotate, a platform (20) horizontally disposed at one end of the support plate (11), baffles (14) disposed on both sides of the support plate (11), connecting holes disposed on the baffles (14), and a pair of pushing devices (30) respectively disposed on both sides of the support plate (11); The support plate (11) is used to support the arc-shaped arch frame (40). The two ends of the arch frame (40) are detachably connected to the connecting holes on the baffle (14). Arch frames (40) are provided on both sides of the support plate (11), and multiple arch frames (40) are distributed along the length direction of the support plate (11). The pushing device (30) is used to push the arch frame (40) onto the shelf (20). The pushing device (30) includes a pair of support rods (31) respectively disposed at both ends of the support plate (11), a slide rod (32) for connecting the upper ends of the pair of support rods (31), a screw (33) rotatably connected to the pair of support rods (31), a push block (34) threadedly connected to the screw (33), and a second driving device (35) for driving the screw (33) to rotate; The lower end of the support rod (31) is connected to the base plate (10), and the push block (34) is located between a pair of support rods (31); the two ends of the slide rod (32) are fixedly connected to a pair of support rods (31), and the push block (34) is slidably connected to the slide rod (32); Using the pushing device (30), push the arch frame (40) to one end of the support plate (11) near the shelf (20). Then, use bolts to connect the end of the arch frame (40) to the baffles (14) on both sides of the support plate (11). Then, use the hoisting device to hoist the new arch frame (40) onto the support plate (11). Use the pushing device (30) to push the new arch frame (40) to the already fixed arch frame (40) and make the two fit together. Then, use bolts to connect the end of the arch frame (40) to the baffles (14) on both sides of the support plate (11). Repeat this operation. Until the appropriate number of arch frames (40) are tightly pressed together, the first drive device (13) drives the support plate (11) to rotate 180 degrees, and the new arch frame (40) continues to be hoisted onto the support plate (11) and connected to the baffle (14) on the support plate (11). The arch frames (40) on the lower side of the support plate (11) are connected so that multiple arch frames (40) are connected to each other to form multiple arch frames. Then the first drive device (13) drives the support plate (11) to rotate 180 degrees, and the pushing device (30) pushes the multiple arch frames onto the shelf (20).

2. The tunnel multi-arch pre-assembly device according to claim 1, characterized in that: The first drive device (13) includes a pair of support columns (131) respectively vertically disposed at both ends of the base plate (10), a first driven wheel (132) disposed at the end of the rotating shaft (12) away from the table (20), a first motor (133) fixedly disposed on the base plate (10), a first drive wheel (134) disposed on the output shaft of the first motor (133), and a first transmission belt (135) for connecting the first drive wheel (134) and the first driven wheel (132); The two ends of the rotating shaft (12) are respectively rotatably connected to a pair of support columns (131).

3. The tunnel multi-arch pre-assembly device according to claim 1, characterized in that: The second drive device (35) includes a second driven wheel (351) located at one end of the screw (33) away from the table (20), a second motor (352) fixed on one of the support rods (31), a second drive wheel (353) located on the output shaft of the second motor (352), and a second transmission belt (354) for connecting the second drive wheel (353) and the second driven wheel (351).

4. The tunnel multi-arch pre-assembly device according to claim 1, characterized in that: The lower end of the support rod (31) is hinged to the upper side of the base plate (10); the pushing device (30) also includes a support plate (36) for connecting a pair of the support rods (31), and a third driving device (37) for driving the support rods (31) to rotate around their lower ends. The support plate (36) is used to support the arch (40) located below the support plate (11).

5. The tunnel multi-arch pre-assembly device according to claim 4, characterized in that: The third driving device (37) includes a telescopic cylinder (371) disposed on the base plate (10); the cylinder body of the telescopic cylinder (371) is hinged to the base plate (10), and the movable end of the telescopic cylinder (371) is hinged to the support plate (36).

6. The tunnel multi-arch pre-assembly device according to claim 1, characterized in that: Auxiliary plates (15) are provided at the middle of both sides of the support plate (11). The auxiliary plates (15) are arranged perpendicular to the support plate (11), and the length direction of the auxiliary plates (15) is parallel to the length direction of the support plate (11). Multiple reinforcing ribs (16) are provided between the auxiliary plate (15) and the support plate (11).

7. The tunnel multi-arch pre-assembly device according to claim 6, characterized in that: The auxiliary plate (15) has an arc-shaped pad (17) on the side away from the support plate (11). The length direction of the pad (17) is parallel to the length direction of the support plate (11), and the pad (17) abuts against the inner side of the arch frame (40).

8. The tunnel multi-arch pre-assembly device according to claim 1, characterized in that: The shelf (20) includes a horizontally arranged shelf (21), side panels (22) on both sides of the shelf (21), and a support column (23) for supporting the shelf (21); there is a gap between the shelf (21) and the support plate (11); When the support plate (11) is in a horizontal state, the upper surface of the shelf (21) is at the same height as the upper surface of the support plate (11).

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