Tunnel lining trolley structure and lining method thereof

Abstract

The invention discloses a tunnel lining trolley structure and a lining method thereof, and particularly relates to the technical field of tunnel lining.The tunnel lining trolley structure comprises a supporting mechanism, the supporting mechanism comprises two symmetrically-arranged gantries, a forming mechanism is arranged on the gantries, the forming mechanism comprises two symmetrically-arranged side molds, and top molds are arranged on the opposite sides of the two side molds; a pouring mechanism is arranged on the top mold, the pouring mechanism comprises two symmetrically arranged material conveying pipes, the input ends of the material conveying pipes are externally connected with a material pumping device, a pouring pipe is movably arranged on the top mold, and the input end of the pouring pipe is connected with the output ends of the material conveying pipes. The guide mechanism is arranged to guide and limit the pouring pipe, so that uniform, sufficient and complete pouring can be performed on the pouring cavity on one side of the trolley under the condition that the single pouring pipe is arranged, the pouring pipe does not need to be detached and replaced, and the pouring efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel lining, and more particularly to a tunnel lining trolley structure and a lining method thereof. Background Art

[0002] Lining trolleys are specialized equipment used for concrete lining operations during tunnel construction. Their primary function is to provide a supporting formwork and work platform for pouring concrete on the tunnel's inner wall, ensuring the dimensional accuracy, surface flatness, and overall stability of the lining structure. Their operating principle is to use a hydraulic system to drive the trolley to a designated location, deploy the formwork, and precisely position it before pouring concrete. After the concrete initially sets, the formwork is retracted to complete the lining construction.

[0003] In actual operations, to avoid excessive concrete segregation caused by pouring too high at once, several working windows are typically evenly spaced on the side and top forms to achieve a layer-by-layer pouring effect from bottom to top. To balance the concrete pressure on both sides of the formwork, prevent trolley offset or local formwork deformation (such as bulging of the sidewall formwork or floating of the vault formwork), and ensure uniform lining thickness, pouring is performed simultaneously from both sides of the formwork, adhering to the principle of symmetrical pouring.

[0004] Therefore, each working window will be equipped with a corresponding pipe interface. After each layer is poured, the feed pipe on the pump truck needs to be removed and connected to the pipe interface on the upper working window. Due to the large number of working windows, especially on some large lining trolleys, the feed pipe needs to be disassembled and assembled dozens of times in a single pouring operation, which seriously affects the construction efficiency. Summary of the Invention

[0005] The present invention provides a tunnel lining trolley structure and a lining method thereof, aiming to solve the problem that the existing lining trolley needs to frequently disassemble and assemble the material delivery pipe during a single pouring operation, which seriously affects the construction efficiency.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a tunnel lining trolley structure, comprising: a support mechanism, the support mechanism comprising two symmetrically arranged portal frames, the portal frames being provided with a forming mechanism, the forming mechanism comprising two symmetrically arranged side molds, top molds being provided on opposite sides of the two side molds; A pouring mechanism is provided on the top mold, which includes two symmetrically arranged material delivery pipes. The input ends of the material delivery pipes are externally connected to a pumping device. A pouring pipe is movably provided on the top mold, and the input end of the pouring pipe is connected to the output end of the material delivery pipe. Several guide mechanisms are provided on the outside of the side mold and the top mold. The guide mechanism includes a base movably provided on the side mold and the top mold, and a limit rod is provided on the outside of the base. The pouring pipe passes through several limit rods from top to bottom in sequence, and the pouring pipe is arranged in a zigzag shape on the outside of the side mold and the top mold.

[0007] In a preferred embodiment, two limit rods are symmetrically arranged on each base, and the limit rods are rotatably connected to the base. A limit plate is provided at the top end of the limit rod, and the outer surface of the limit plate is a curved surface, and the outer surface of the limit plate is adapted to the curvature of the outer surface of the side mold and the top mold.

[0008] In a preferred embodiment, a limiting seat is provided at the bottom of the base, and fixing frames are provided on the inner walls of the side mold and the top mold. An inserting rod is movably provided on the fixing frame, and the inserting rod is adapted to the limiting seat.

[0009] In a preferred embodiment, a vibrating mechanism is provided in the casting pipe, and the vibrating mechanism includes a second vibrator provided outside the output end of the casting pipe. One end of the second vibrator is connected to a wire, which extends into the feed pipe and passes through the side wall of the feed pipe. The wire is externally connected to a control device.

[0010] In a preferred embodiment, two mounting tubes are symmetrically provided on the top of the top mold, a limiting ring is provided in the mounting tube, the input end of the pouring pipe is provided in the mounting tube, and the pouring pipe is adapted to the limiting ring.

[0011] In a preferred embodiment, the inner walls of the side mold and the top mold are provided with a plurality of vibrators 1, the vibrators 1 are evenly distributed on the side mold and the top mold, and the installation position of the vibrators 1 is staggered with the base.

[0012] In a preferred embodiment, a crossbeam is provided on the opposite sides of the two door frames, a plurality of longitudinal beams are provided on the crossbeam, and a plurality of unfolding components are provided on both the crossbeam and the longitudinal beam, and the output ends of the unfolding components are fixedly connected to the corresponding side molds and top molds respectively.

[0013] In a preferred embodiment, a traveling assembly is provided at the bottom end of the gantry, and the traveling assembly is used to support the gantry and drive the gantry to move.

[0014] In a preferred embodiment, the side formwork and the top formwork can be spliced into a semicircular formwork, and the semicircular formwork and the inner wall of the tunnel enclose a casting cavity.

[0015] A lining method for a tunnel lining trolley structure comprises the following steps: Step 1: When the side mold and the top mold are in the retracted state, extend the base out of the side mold and the top mold and fix it. Then, pass the output ends of the two pouring pipes through all the limit rods in a zigzag trajectory from top to bottom until the output ends of the pouring pipes extend to the bottom of the side mold; Step 2: Move the entire device to a preset position in the tunnel using the walking assembly, and use the unfolding assembly to unfold the side mold and top mold to the preset positions and tightly splice them together; Step 3: The delivery pipe is docked with the pouring pipe, and the second vibrator is pre-installed on the outside of the output end of the pouring pipe. The concrete is synchronously delivered from the two pouring pipes to the pouring cavities on both sides through the pumping device external to the delivery pipe, and the second vibrator is synchronously controlled to start vibrating intermittently; Step 4. During pouring, slowly retract the pouring pipe according to the principle of adapting to the height of the concrete, so that the pouring pipe is slowly retracted in a zigzag trajectory. Finally, after the pouring cavity is filled with concrete, retract the pouring pipe and vibrator 2 from the installation tube to the inside of the top mold, and seal the installation tube.

[0016] The beneficial effects of the present invention are: The present invention provides a guide mechanism to guide and limit the pouring pipe, so that when a single pouring pipe is provided, the pouring cavity on one side of the trolley can be uniformly and fully poured without removing or replacing the pouring pipe, thereby significantly improving the pouring efficiency. The present invention provides a vibrating mechanism that can move with the output end of the pouring pipe in conjunction with a vibrator, thereby being able to vibrate the concrete more evenly, thereby effectively improving the pouring quality; The present invention achieves the effect of uniform pouring in the pouring cavity by setting a zigzag placement path for the pouring pipe, without the need to set up multiple pouring pipes or wait for the concrete to spread independently. While simplifying the equipment structure, it also avoids the risk of insufficient filling uniformity and the occurrence of "cold seams" due to excessive concrete flow distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 It is a structural schematic diagram from the perspective of the present invention.

[0019] Figure 3 It is a schematic cross-sectional structural diagram of the mounting tube portion of the present invention.

[0020] Figure 4 It is a schematic cross-sectional structural diagram of the guide mechanism part of the present invention.

[0021] Figure 5 It is a schematic cross-sectional structural diagram of the vibrating mechanism part of the present invention.

[0022] Figure 6 The present invention relates to a lining method for a tunnel lining trolley structure.

[0023] The accompanying drawings are marked as follows: 1. Support mechanism; 11. Door frame; 12. Crossbeam; 13. Longitudinal beam; 14. Unfolding assembly; 15. Travel assembly; 2. Forming mechanism; 21. Side mold; 22. Top mold; 23. Vibrator 1; 24. Mounting cylinder; 25. Limiting ring; 26. Fixing frame; 27. Insert rod; 3. Casting mechanism; 31. Feed pipe; 32. Casting pipe; 4. Guide mechanism; 41. Base; 42. Limiting rod; 43. Limiting plate; 44. Limiting seat; 5. Vibrating mechanism; 51. Wire; 52. Vibrator 2. DETAILED DESCRIPTION

[0024] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Refer to the instruction manual Figures 1 to 5 In the lining trolley structure of the present invention, the front ends of the side mold 21 and the top mold 22 are provided with a blocking device (not shown in the drawings). The side mold 21, the top mold 22, and the blocking device are closely attached to the inner wall of the tunnel to realize a closed casting cavity in the tunnel. Depending on the type of tunnel, some tunnel walls within the casting cavity may be provided with a steel frame, while others may not. If a steel frame exists, the dimensions of the guide mechanism 4 and the casting pipe 32 will be adaptively adjusted to avoid interference with the steel frame. Example 1

[0026] Refer to the instruction manual Figures 1 to 5 This embodiment proposes a tunnel lining trolley structure to solve the problem in the prior art that, in order to achieve the purpose of layered pouring, the material delivery pipe on the pump vehicle needs to be disassembled and assembled dozens of times in a single pouring operation, which seriously affects the construction efficiency. The structure includes: a support mechanism 1, the support mechanism 1 includes two symmetrically arranged door frames 11, and the door frames 11 are provided with a forming mechanism 2, and the forming mechanism 2 includes two symmetrically arranged side molds 21, and top molds 22 are provided on opposite sides of the two side molds 21; It should be noted that the two door frames 11 are respectively located at the front and rear ends of the trolley, and the top mold 22 is located in the middle position of the two side molds 21.

[0027] A pouring mechanism 3 is provided on the top mold 22, and the pouring mechanism 3 includes two symmetrically arranged material delivery pipes 31. The input end of the material delivery pipe 31 is externally connected to a pumping device. A pouring pipe 32 is movably provided on the top mold 22, and the input end of the pouring pipe 32 is connected to the output end of the material delivery pipe 31. Several guide mechanisms 4 are provided on the outside of the side mold 21 and the top mold 22. The guide mechanism 4 includes a base 41 movably provided on the side mold 21 and the top mold 22, and a limiting rod 42 is provided on the outside of the base 41. The pouring pipe 32 passes through the several limiting rods 42 in sequence from top to bottom, and the pouring pipe 32 is arranged in a zigzag shape on the outside of the side mold 21 and the top mold 22.

[0028] It should be noted that the material pumping device is a material pumping vehicle, and the size and specifications of the guide mechanism 4 can be adjusted according to actual conditions.

[0029] In this embodiment, the implementation scenario is specifically as follows: the casting pipe 32 is set in a position to cast the concrete delivered by the pumping device layer by layer from bottom to top, and the casting pipe 32 is slowly recovered by the traction of the pumping device or the winding device not shown in the figure. During this process, the casting pipe 32 is separated from the corresponding limit rod 42 in turn. After the casting pipe 32 is separated, it falls downward into the concrete by its own weight. Therefore, the output end of the casting pipe 32 is always on the upper surface of the concrete. Finally, when the casting pipe 32 is completely recovered, the casting cavity is also synchronously filled with concrete. Example 2

[0030] Refer to the instruction manual Figures 1 to 5 Based on the above embodiment 1, this embodiment provides a guide mechanism 4 to solve the problem in the prior art that the pouring pipe 32 can only move up and down along the circumference of the side mold 21 and the top mold 22, resulting in the concrete taking a long time to spread and fill the two ends of the pouring cavity; Two limit rods 42 are symmetrically arranged on each base 41, and the limit rods 42 are rotatably connected to the base 41. A limit plate 43 is set at the top of the limit rod 42. The outer surface of the limit plate 43 is a curved surface, and the outer surface of the limit plate 43 is adapted to the curvature of the outer surface of the side mold 21 and the top mold 22.

[0031] It should be noted that the limit rod 42 will be released and retracted after it is out of contact with the pouring pipe 32, and will be re-fixed when the limit plate 43 retreats to a position flush with the outer surface of the side mold 21 or the top mold 22, so that the outer surfaces of the side mold 21 and the top mold 22 remain smooth and closed.

[0032] A limit seat 44 is provided at the bottom of the base 41 , and a fixing frame 26 is provided on the inner wall of the side mold 21 and the top mold 22 . An insertion rod 27 is movably provided on the fixing frame 26 , and the insertion rod 27 is adapted to the limit seat 44 .

[0033] It should be noted that the specifications and dimensions of the fixing frame 26 can be adjusted according to actual conditions, and the guide mechanism 4 can also be fixed by other limiting mechanisms.

[0034] In this embodiment, the implementation scenario is specifically as follows: due to the guiding effect of the guide mechanism 4, the pouring pipe 32 will not only move up and down during the recovery process, but also move slowly along the length direction of the side mold 21 and the top mold 22, so that a single pouring pipe 32 can also be uniformly poured in the pouring cavity. There is no need to set up multiple pouring pipes 32 or wait for the concrete to spread independently. While simplifying the equipment structure, it also avoids the risk of insufficient filling uniformity and the occurrence of "cold seams" due to excessive concrete flow distance. Example 3

[0035] Refer to the instruction manual Figures 1 to 5 Based on Example 2, this example proposes a vibrating mechanism 5 to solve the problem of insufficient concrete vibration in the prior art.

[0036] A vibrating mechanism 5 is provided in the pouring pipe 32, and the vibrating mechanism 5 includes a second vibrator 52 provided on the outside of the output end of the pouring pipe 32. One end of the second vibrator 52 is connected to a wire 51, which extends into the conveying pipe 31 and passes through the side wall of the conveying pipe 31. The wire 51 is externally connected to a control device.

[0037] It should be noted that the vibrator 2 52 will always be buried in the concrete due to the scouring of the concrete to ensure a good vibration effect.

[0038] Two mounting tubes 24 are symmetrically provided on the top of the top mold 22 . A limiting ring 25 is provided inside the mounting tube 24 . The input end of the pouring pipe 32 is provided inside the mounting tube 24 , and the pouring pipe 32 is adapted to the limiting ring 25 .

[0039] It should be noted that the limiting ring 25 can limit the pouring pipe 32 to prevent the pouring pipe 32 from sliding into the pouring cavity.

[0040] The inner walls of the side mold 21 and the top mold 22 are both provided with a plurality of vibrators 23 , which are evenly distributed on the side mold 21 and the top mold 22 , and the installation positions of the vibrators 23 are staggered with the base 41 .

[0041] It should be noted that the vibrator 1 23 is an attached vibrator, which is used in conjunction with the vibrator 2 52 to achieve a better vibration effect.

[0042] In this embodiment, the implementation scenario is specifically as follows: since the second vibrator 52 is arranged on the outside of the output end of the pouring pipe 32, the second vibrator 52 is always buried in the area of the concrete just discharged from the pouring pipe 32, and through intermittent vibration, the vibration effect of the concrete can be achieved more evenly. Example 4

[0043] Refer to the instruction manual Figures 1 to 5 Based on Example 3, this embodiment proposes a support mechanism 1 to achieve automatic control of the side form 21 and the top form 22, thereby improving construction efficiency.

[0044] A crossbeam 12 is provided on the opposite sides of the two door frames 11, and a plurality of longitudinal beams 13 are provided on the crossbeam 12. A plurality of unfolding components 14 are provided on both the crossbeam 12 and the longitudinal beam 13. The output ends of the unfolding components 14 are fixedly connected to the corresponding side molds 21 and top molds 22 respectively.

[0045] It should be noted that the unfolding assembly 14 is a hydraulic cylinder, which is used to provide power for the unfolding of the side mold 21 and the top mold 22.

[0046] A traveling assembly 15 is provided at the bottom end of the gantry 11 , and the traveling assembly 15 is used to support the gantry 11 and drive the gantry 11 to move.

[0047] It should be noted that a traveling track is pre-laid in the tunnel, and the traveling assembly 15 is used to move on the track.

[0048] The side formwork 21 and the top formwork 22 can be spliced into a semicircular formwork, and the semicircular formwork and the inner wall of the tunnel enclose a casting cavity.

[0049] It should be noted that the casting cavity is adapted to the size of the tunnel. Example 5

[0050] Refer to the instruction manual Figure 6 Based on Example 4, this embodiment proposes a lining method for a tunnel lining trolley structure, comprising the following steps: Step 1: When the side mold 21 and the top mold 22 are in the retracted state, extend the base 41 out of the side mold 21 and the top mold 22 and fix them. Then, pass the output ends of the two pouring pipes 32 through all the limit rods 42 in a zigzag trajectory from top to bottom until the output ends of the pouring pipes 32 extend to the bottom of the side mold 21. Step 2: Move the entire device to a preset position in the tunnel using the walking assembly 15, and unfold the side mold 21 and the top mold 22 to the preset positions and tightly splice them together using the unfolding assembly 14; Step 3: The delivery pipe 31 and the pouring pipe 32 are docked and installed, and the second vibrator 52 is pre-installed on the outside of the output end of the pouring pipe 32. The concrete is synchronously delivered from the two pouring pipes 32 to the pouring cavities on both sides through the pumping device external to the delivery pipe 31, and the second vibrator 52 is synchronously controlled to start vibrating intermittently; Step 4: During pouring, slowly retract the pouring pipe 32 according to the principle of adapting the height of the concrete, so that the pouring pipe 32 is slowly retracted in a zigzag trajectory. Finally, after the pouring cavity is filled with concrete, the pouring pipe 32 and the vibrator 2 52 are retracted from the installation tube 24 to the inside of the top mold 22, and the installation tube 24 is sealed.

[0051] It should be noted that during the recovery process of the casting tube 32, each time it loses contact with a limit rod 42, the limit rod 42 will retreat and be fixed, thereby sealing the side mold 21 and the top mold 22, and finally sealing the installation tube 24 to achieve complete closure of the casting cavity.

[0052] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A tunnel lining trolley structure, comprising: A support mechanism (1), the support mechanism (1) comprising two symmetrically arranged door frames (11), a forming mechanism (2) being arranged on the door frames (11), the forming mechanism (2) comprising two symmetrically arranged side molds (21), and top molds (22) being arranged on opposite sides of the two side molds (21); The invention is characterized in that a pouring mechanism (3) is provided on the top mold (22), the pouring mechanism (3) includes two symmetrically arranged material delivery pipes (31), the input end of the material delivery pipe (31) is externally connected to a pumping device, a pouring pipe (32) is movably provided on the top mold (22), the input end of the pouring pipe (32) is connected to the output end of the material delivery pipe (31), a plurality of guide mechanisms (4) are provided on the outside of the side mold (21) and the top mold (22), the guide mechanism (4) includes a base (41) movably provided on the side mold (21) and the top mold (22), a limiting rod (42) is provided on the outside of the base (41), the pouring pipe (32) passes through the plurality of limiting rods (42) in sequence from top to bottom, and the pouring pipe (32) is arranged in a zigzag shape on the outside of the side mold (21) and the top mold (22).

2. The tunnel lining trolley structure according to claim 1, characterized in that: Two limiting rods (42) are symmetrically arranged on each base (41), and the limiting rods (42) are rotatably connected to the base (41). A limiting plate (43) is arranged at the top end of the limiting rod (42), and the outer surface of the limiting plate (43) is a curved surface, and the outer surface of the limiting plate (43) is adapted to the curvature of the outer surface of the side mold (21) and the top mold (22).

3. The tunnel lining trolley structure according to claim 2, characterized in that: A limit seat (44) is provided at the bottom of the base (41), and a fixing frame (26) is provided on the inner wall of the side mold (21) and the top mold (22). An insertion rod (27) is movably provided on the fixing frame (26), and the insertion rod (27) is adapted to the limit seat (44).

4. The tunnel lining trolley structure according to claim 3, characterized in that: A vibrating mechanism (5) is provided in the pouring pipe (32), and the vibrating mechanism (5) includes a second vibrator (52) provided outside the output end of the pouring pipe (32). One end of the second vibrator (52) is connected to a wire (51), and the wire (51) extends into the material conveying pipe (31) and passes through the side wall of the material conveying pipe (31). The wire (51) is externally connected to a control device.

5. The tunnel lining trolley structure according to claim 4, characterized in that: Two mounting cylinders (24) are symmetrically arranged on the top of the top mold (22), a limiting ring (25) is arranged inside the mounting cylinder (24), the input end of the pouring pipe (32) is arranged inside the mounting cylinder (24), and the pouring pipe (32) is adapted to the limiting ring (25).

6. The tunnel lining trolley structure according to claim 5, characterized in that: The inner walls of the side mold (21) and the top mold (22) are both provided with a plurality of vibrators (23). The vibrators (23) are evenly distributed on the side mold (21) and the top mold (22), and the installation positions of the vibrators (23) are staggered with the base (41).

7. The tunnel lining trolley structure according to claim 6, characterized in that: A crossbeam (12) is provided on opposite sides of the two door frames (11), a plurality of longitudinal beams (13) are provided on the crossbeam (12), and a plurality of expansion components (14) are provided on both the crossbeam (12) and the longitudinal beam (13), and the output ends of the expansion components (14) are fixedly connected to the corresponding side molds (21) and top molds (22), respectively.

8. The tunnel lining trolley structure according to claim 7, characterized in that: A walking assembly (15) is provided at the bottom end of the door frame (11), and the walking assembly (15) is used to support the door frame (11) and drive the door frame (11) to move.

9. The tunnel lining trolley structure according to claim 8, characterized in that: The side mold (21) and the top mold (22) can be spliced into a semicircular mold, and the semicircular mold and the inner wall of the tunnel enclose a casting cavity.

10. The lining method of a tunnel lining trolley structure according to claim 9, characterized in that: The following steps are involved: Step 1: When the side mold (21) and the top mold (22) are both in a retracted state, the base (41) is extended out of the outside of the side mold (21) and the top mold (22) and fixed, and then the output ends of the two pouring pipes (32) are passed through all the limit rods (42) in a zigzag trajectory from top to bottom until the output ends of the pouring pipes (32) extend to the bottom of the side mold (21); Step 2: The entire device is moved to a preset position in the tunnel by the walking assembly (15), and the side mold (21) and the top mold (22) are respectively unfolded to the preset positions and tightly spliced by the unfolding assembly (14); Step 3: The delivery pipe (31) and the pouring pipe (32) are docked and installed, and the second vibrator (52) is pre-installed on the outside of the output end of the pouring pipe (32). The concrete is synchronously transported from the two pouring pipes (32) to the pouring cavities on both sides through the pumping device external to the delivery pipe (31), and the second vibrator (52) is synchronously controlled to start vibrating intermittently; Step 4: During pouring, the pouring pipe (32) is slowly retracted according to the principle of adapting the height of the concrete, so that the pouring pipe (32) is slowly retracted in a zigzag trajectory. Finally, after the pouring cavity is filled with concrete, the pouring pipe (32) and the second vibrator (52) are retracted from the installation cylinder (24) to the inside of the top mold (22), and the installation cylinder (24) is sealed.

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