A tunnel secondary lining lower plugging template and a tunnel secondary lining plugging template assembly

Abstract

This utility model discloses a tunnel secondary lining sealing template and a tunnel secondary lining sealing template assembly, relating to the field of tunnel construction technology. It includes a lifting and positioning mechanism, a first sealing mold, and a second sealing mold. The second sealing mold is movably arranged relative to the first sealing mold in the height direction. A first sealing plate is fixedly mounted on the sealing mold frame and positioned above the connecting ear plate. The back of the first sealing plate has a first sealing sidewall. A second bent panel includes a second sealing sidewall, which is used to adhere to the first sealing sidewall from the back of the first sealing sidewall. The second sealing sidewall and the first sealing sidewall partially overlap and are spliced ​​to form a cast sealing surface. This utility model's tunnel secondary lining sealing template achieves adjustable sealing height and allows for the installation of waterstops of different heights, facilitating adaptation to different engineering scenarios. Furthermore, the template can be installed or removed simply by swinging the sealing mold frame around the hinge axis, making it convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular, to a tunnel secondary lining sealing template and a tunnel secondary lining sealing template assembly. Background Technology

[0002] During tunnel construction, primary shotcrete and anchor flexible support is used to maximize the bearing capacity of the surrounding rock mass. Secondary lining serves as a safety reserve and decorative enhancement. Secondary lining is mostly constructed using steel formwork trolleys. During the pouring of secondary lining concrete, one side of the trolley is in contact with the already formed concrete and does not require sealing, while the other side is exposed and requires a sealing formwork.

[0003] Currently, in the segmented pouring of secondary lining, sealing formwork is used as a temporary support device to seal the construction joint interface. By precisely clamping and fixing the waterstop, it not only effectively maintains the temporary sealing of the construction joint, but also creates good interface conditions for the subsequent continuous pouring of concrete, ensuring the overall waterproof integrity of the structural joint. However, the waterstop height of traditional sealing formwork is fixed, which cannot adapt to different engineering scenarios (such as walls of different thicknesses, changes in expansion joint width, etc.). Traditional sealing formwork cannot adapt to situations where there is no waterstop in the middle and the steel reinforcement needs to pass through. Furthermore, because the position of the steel reinforcement cannot be accurately located on site, it causes interference with the lower sealing formwork.

[0004] Therefore, it is necessary to provide a tunnel secondary lining sealing template and a tunnel secondary lining sealing template assembly to solve or partially alleviate the above-mentioned technical problems. Utility Model Content

[0005] The tunnel secondary lining sealing template and tunnel secondary lining sealing template assembly provided by this utility model solve the technical problem that the height of the traditional sealing template cannot be adjusted, which makes it difficult to adjust the height of the waterstop and adapt to different engineering scenarios.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A tunnel secondary lining sealing template includes a lifting and positioning mechanism, a first sealing template, and a second sealing template. The second sealing template is positioned above the first sealing template and is movably arranged relative to the first sealing template in the height direction. The first sealing template includes a connecting ear plate, a sealing template frame, and a first sealing plate. The connecting ear plate is connected to the sealing template frame, and the first sealing plate is fixedly mounted on the sealing template frame and positioned above the connecting ear plate. The back of the first sealing plate has a first sealing sidewall. The second sealing template includes a second bent panel, which includes a second sealing sidewall. The second sealing sidewall is used to adhere to the first sealing sidewall from the back of the first sealing sidewall. The second sealing sidewall and the first sealing sidewall partially overlap and are spliced ​​to form a cast sealing surface. The lifting and positioning mechanism drives the second sealing template to move and position relative to the first sealing template in the height direction, thereby adjusting the overlapping area of ​​the second sealing sidewall and the first sealing sidewall to adjust the size of the cast sealing surface.

[0008] Furthermore, the sealing template under the secondary lining of the tunnel also includes a support pipe and a support pipe body. The support pipe body is connected to the sealing template frame, and the support pipe is inserted into the support pipe body and positioned by a locking component.

[0009] Furthermore, the sealing template under the secondary lining of the tunnel also includes an installation assembly connector. The first end of the installation assembly connector is fixed on the first sealing plate, and the second end of the installation assembly connector is cantilevered outward. The second sealing template is located above the installation assembly connector.

[0010] Furthermore, the second bent panel is an L-shaped plate or an inverted U-shaped plate, and the second sealing mold also includes a second reinforcing rib plate disposed inside the second bent panel. The first sealing plate adopts the first bent panel, and the first sealing mold also includes a first reinforcing rib plate disposed inside the first bent panel. The first bent panel is provided with an assembly guide groove corresponding to the second reinforcing rib plate. The first reinforcing rib plate and the assembly guide groove are staggered. The second reinforcing rib plate and the assembly guide groove are inserted into each other. The casting sealing side wall of the second bent panel is attached to the casting sealing side wall of the first bent panel.

[0011] Furthermore, the second sealing mold also includes a limiting guide component located inside the second bent panel. The limiting guide component is located inside the second reinforcing rib plate. A limiting guide groove is formed on the top surface of the first bent panel. The limiting guide component is arranged through the limiting guide groove. A limiting block is detachably provided on the insertion end of the limiting guide component. The length dimension of the limiting block is greater than the groove diameter of the limiting guide groove.

[0012] Furthermore, the limiting guide component adopts a limiting guide post and the limiting guide groove is a cylindrical groove, or the limiting guide component adopts a limiting guide plate and the limiting guide groove is a square groove.

[0013] Furthermore, the bottom insertion end of the limiting guide is provided with a limiting through hole, and the limiting block includes a limiting bolt and a limiting nut. The limiting bolt passes through the limiting through hole and is threadedly connected to the limiting nut.

[0014] Furthermore, the sealing mold frame includes support side plates and support reinforcing ribs. The two support side plates are arranged opposite to each other on both sides of the length direction of the first sealing plate and are connected by the support reinforcing ribs. The connecting ear plates are arranged in a one-to-one correspondence with the support side plates and are connected to the corresponding support side plates. The mold support tube is arranged in a one-to-one correspondence with the support side plates and is connected to the corresponding support side plates.

[0015] Furthermore, the first end of the lifting and positioning mechanism is located on the first sealing mold, and the second end of the lifting and positioning mechanism is arranged to support the second sealing mold. The lifting and positioning mechanism is one of the following: hydraulic lifting mechanism, electric lifting mechanism, air pressure bladder, memory alloy spring, and threaded lifting mechanism.

[0016] Furthermore, the lifting and positioning mechanism includes a lifting screw and a locking nut, the second bending panel includes a supporting top surface arranged adjacent to the second sealing side wall, the first sealing plate is provided with a lifting threaded hole, and the threaded end of the lifting screw passes through the locking nut and the lifting threaded hole in sequence and then supports the supporting top surface.

[0017] This utility model also provides a tunnel secondary lining sealing template assembly, including the aforementioned lower sealing template for the tunnel secondary lining, as well as an upper sealing template for the tunnel secondary lining and a middle sealing template for the tunnel secondary lining. The middle sealing template for the tunnel secondary lining is arranged above the lower sealing template for the tunnel secondary lining, and a first steel reinforcement clearance gap is left between the middle sealing template for the tunnel secondary lining and the lower sealing template for the tunnel secondary lining. The upper sealing template for the tunnel secondary lining is arranged above the middle sealing template for the tunnel secondary lining, and a second steel reinforcement clearance gap is left between the upper sealing template for the tunnel secondary lining and the middle sealing template for the tunnel secondary lining.

[0018] Furthermore, the sealing template for the tunnel secondary lining includes stacked rubber and / or pads along the height direction, or the sealing template for the tunnel secondary lining is a sealing plate with an adjustable size for casting the sealing side.

[0019] Furthermore, the tunnel secondary lining middle sealing template includes middle sealing combination plates arranged sequentially along the height direction. A waterstop installation gap is left between two adjacent middle sealing combination plates. The middle sealing combination plate includes a first movable plate and a second movable plate arranged relatively spliced ​​and with overlapping sidewalls. The first movable plate is movably arranged relative to the second movable plate in the height direction to adjust the size of the overlap of the sidewalls.

[0020] This utility model has the following beneficial effects:

[0021] This utility model discloses a tunnel secondary lining sealing template, comprising a lifting and positioning mechanism, a first sealing template, and a second sealing template. The first sealing template includes a first sealing plate with a first sealing sidewall on its back. The second sealing template includes a second bent panel with adjacent second sealing sidewalls and a supporting top surface. The second sealing sidewalls are attached to the first sealing sidewalls from their backs, and partially overlap with the first sealing sidewalls to form a cast sealing surface. The supporting top surface supports the waterstop. Under the action of the lifting and positioning mechanism, the second sealing template is positioned closer to or further away from the first sealing template, thereby adjusting the overlapping area of ​​the second and first sealing sidewalls to adjust the size of the cast sealing surface. Ultimately, this achieves the effect of adjustable sealing height and installation of waterstops at different heights, which is beneficial for adapting to different engineering scenarios.

[0022] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the tunnel secondary lining sealing template in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the use of the tunnel secondary lining sealing template in one embodiment of this utility model;

[0026] Figure 3 yes Figure 1 A front view of the sealing template under the secondary lining of the tunnel;

[0027] Figure 4 yes Figure 1 A three-dimensional structural diagram of the second sealing mold in the process.

[0028] Figure 5 yes Figure 1 A three-dimensional structural diagram of the first sealing mold and the support pipe body in the process;

[0029] Figure 6 yes Figure 5 The corresponding top view;

[0030] Figure 7 This is a three-dimensional structural diagram of the first sealing mold, the support pipe body, and the lifting and positioning mechanism in another embodiment;

[0031] Figure 8 yes Figure 7 The corresponding front view;

[0032] Figure 9 This is a schematic diagram of the use of the tunnel secondary lining sealing template assembly in one embodiment of the present invention.

[0033] Legend:

[0034] 100. Lower sealing template for tunnel secondary lining; 101. Casting sealing surface; 10. First sealing template; 11. Connecting ear plate; 12. Sealing template frame; 121. Supporting side plate; 122. Supporting reinforcing rib plate; 13. First sealing plate; 131. First sealing side wall; 132. Assembly guide groove; 133. Limiting guide groove; 134. Lifting threaded hole; 14. First reinforcing rib plate; 20. Second sealing template; 21. Second bending panel; 211. Second sealing side wall; 212. Supporting top surface; 22. Second reinforcing rib plate; 23. Limiting guide component; 24. Limiting block; 30. Lifting and positioning mechanism; 31. Lifting screw; 32. Locking nut; 40. Support pipe body; 50. Support insertion pipe; 60. Installation and assembly connector; 200. Middle sealing template for tunnel secondary lining; 300. Upper sealing template for tunnel secondary lining. Detailed Implementation

[0035] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] Furthermore, the use of terms such as "second" and "first" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "second" or "first" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0039] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 This utility model provides a tunnel secondary lining sealing template 100, including a lifting and positioning mechanism 30, a first sealing template 10, and a second sealing template 20. The second sealing template 20 is located above the first sealing template 10 and is movably arranged relative to the first sealing template 10 in the height direction. The first sealing template 10 includes a connecting ear plate 11, a sealing template frame 12, and a first sealing plate 13. The connecting ear plate 11 is connected to the sealing template frame 12, and the first sealing plate 13 is fixedly mounted on the sealing template frame 12 and located above the connecting ear plate 11. The back of the first sealing plate 13 has a first sealing sidewall 131. The second sealing template 20 includes a second bend. Panel 21, the second bent panel 21 includes a second sealing side wall 211, the second sealing side wall 211 is used to be attached to the first sealing side wall 131 from the back of the first sealing side wall 131, the second sealing side wall 211 and the first sealing side wall 131 partially overlap and splice to form a casting sealing surface 101, the lifting and positioning mechanism 30 drives the second sealing mold 20 to move and position relative to the first sealing mold 10 in the height direction, thereby adjusting the overlapping area of ​​the second sealing side wall 211 and the first sealing side wall 131 to adjust the size of the casting sealing surface 101 to adapt to different heights of the pre-embedded steel bars in the previous process.

[0040] Optionally, in an optional embodiment of this utility model, the first sealing mold 10 and the second sealing mold 20 are arranged sequentially along the height direction. The lifting and positioning mechanism 30 is used to drive the second sealing mold 20 to move closer to or further away from the first sealing mold 10 and to position it. The connecting ear plate 11 is connected to the sealing mold frame 12. More preferably, the connecting ear plate 11 is movably disposed on the sealing mold frame 12. It can be that the connecting ear plate 11 is hinged to the sealing template 12, or it can be pivotally disposed on the sealing template 12. After the connecting end of the connecting ear plate is fixed to the secondary lining template of the trolley, the mold can be installed or removed simply by swinging the sealing mold frame 12 around the swing axis, which is convenient to use.

[0041] The tunnel secondary lining sealing template 100 provided by this utility model includes a lifting and positioning mechanism 30, a first sealing template 10, and a second sealing template 20. The first sealing template 10 includes a first sealing plate 13, the back of which has a first sealing sidewall 131. The second sealing template 20 includes a second bent panel 21, which has adjacently arranged second sealing sidewalls 211 and a supporting top surface 212. The second sealing sidewalls 211 are used to adhere to the first sealing sidewalls 131 from the back. The second sealing sidewalls 211 and the first sealing sidewalls 131 partially overlap and are spliced ​​to form a cast sealing surface 101. The supporting top surface 212 is used to support the waterstop. The lowering and positioning mechanism 30 moves the second sealing mold 20 closer to or further away from the first sealing mold 10 and positions it accordingly. This adjusts the overlapping area of ​​the second sealing side wall 211 and the first sealing side wall 131 to adjust the size of the casting sealing surface 101. Ultimately, this achieves the effect of adjustable sealing height and installation of waterstops of different heights, which is beneficial for adapting to different engineering scenarios. At the same time, the first sealing mold 10 includes a connecting ear plate 11, a sealing mold frame 12, and a first sealing plate 13. The connecting ear plate 11 is movably mounted on the sealing mold frame 12. After the connecting end of the connecting ear plate is fixed on the secondary lining template of the trolley, the sealing mold frame 12 can be moved / swung relative to the connecting ear plate to realize the installation or removal of the mold, which is convenient to use.

[0042] Understandably, in this invention, the second sealing mold 20 is movably arranged relative to the first sealing mold 10 in the height direction, and the overlapping area of ​​the second sealing side wall 211 and the first sealing side wall 131 can be adjusted by driving the lifting and positioning mechanism 30. Optionally, in actual operation, a height limiting mechanism and a horizontal limiting mechanism can be further designed to guide the second sealing mold 20 to move vertically and prevent the second sealing mold 20 from coming out of the first sealing mold 10.

[0043] Please refer to this again. Figure 1 and Figure 2 Furthermore, the tunnel secondary lining sealing template also includes a support tube 50 and a support pipe body 40. The support pipe body 40 is connected to the sealing template frame 12, and the support tube 50 is inserted into the support pipe body 40 and positioned by a locking assembly. In an optional embodiment of this utility model, the support pipe body 40 is fixedly mounted on the sealing template frame 12 and arranged opposite to the first sealing side wall 131. It is understood that the support tube 50 can be a square tube or a round tube. In a preferred embodiment of this utility model, the support pipe body 40 is a square tube, and the support tube 50 is a square tube. The support tube 50 is inserted into the support pipe body 40 along the height direction and fixed by bolts, providing support for the polymer sealing template, wooden template, etc. above the waterstop.

[0044] Furthermore, the tunnel secondary lining sealing template also includes an installation and assembly connector 60. The first end of the installation and assembly connector 60 is fixed to the first sealing plate 13, and the second end of the installation and assembly connector 60 is cantilevered outwards. The second sealing mold 20 is positioned above the installation and assembly connector 60. Optionally, there are several ways to fix the first end of the connector 60 to the first sealing plate 13. In one embodiment, the first end of the installation and assembly connector 60 is fixed to the back of the first sealing plate 13; in another embodiment, the first end of the installation and assembly connector 60 passes through the first sealing plate 13, and the connection between the installation and assembly connector 60 and the first sealing plate 13 is fixedly set. Optionally, the installation and assembly connector 60 is a steel structural component. In this utility model, the installation and assembly connector 60 is a square tube. One end of the square tube passes through and is welded to the first sealing mold 10 to achieve positioning of the first sealing template 10. The other end of the square tube is fixed to the secondary lining template by bolts, ultimately achieving fixation of the first sealing mold 10. By using a connection method where one end of a square tube passes through and is welded to the first sealing mold 10, the connection strength between the first sealing mold 10 and the second lining mold can be enhanced.

[0045] Please refer to this again. Figure 4 , Figure 5 , Figure 6 , Figure 7 as well as Figure 8 Furthermore, the second bent panel 21 is an L-shaped plate or an inverted U-shaped plate. The second sealing mold 20 also includes a second reinforcing rib plate 22 disposed inside the second bent panel 21. The second reinforcing rib plate 22 protrudes from the bottom surface of the second bent panel 21. The first sealing plate 13 adopts the first bent panel. The first sealing mold 10 also includes a first reinforcing rib plate 14 disposed inside the first bent panel. An assembly guide groove 132 corresponding to the second reinforcing rib plate 22 is arranged on the first bent panel. The first reinforcing rib plate 14 and the assembly guide groove 132 are staggered in the length direction of the first sealing plate 13. The second bent panel 21 is inserted into the first bent panel by the insertion and cooperation of the second reinforcing rib plate 22 and the assembly guide groove 132. The casting sealing side wall of the second bent panel 21 is attached to the casting sealing side wall of the first bent panel. Optionally, if the second bent panel 21 is an L-shaped plate, the second reinforcing rib 22 reinforces the connection between the two panels from the inside of the second bent panel; if the second bent panel 21 is an inverted U-shaped plate, the second reinforcing rib 22 reinforces the connection between the three panels from the inside of the second bent panel. In this invention, by arranging the second reinforcing rib 22 on the bottom surface of the second bent panel 21, and the assembly guide groove 132 arranged on the first bent panel, the second bent panel 21 is guided to move relative to the first bent panel in the height direction and is limited in the length direction (from the left side of the first bent panel to the right side). In a specific implementation, the first reinforcing rib 14 is located outside the second reinforcing rib 22.

[0046] Understandably, the assembly guide groove 132 is arranged in a one-to-one correspondence with the second reinforcing rib plate 22. The number of second reinforcing ribs 22 can be one, two, three, or other quantities. In another embodiment of this utility model, the number of second reinforcing rib plates 22 is two, and the two second reinforcing rib plates 22 are arranged at intervals. More preferably, the second reinforcing rib plates 22 are arranged close to the two end edges in the length direction of the second bent panel, which facilitates the arrangement of the lifting and positioning mechanism 30 on the second bent panel and inside the second reinforcing rib plate 22.

[0047] Furthermore, the second sealing mold 20 also includes a limiting guide 23 disposed inside the second bent panel 21. The limiting guide 23 is disposed on the inner side of the second reinforcing rib plate 22. A limiting guide groove 133 is formed on the top surface of the first bent panel. The limiting guide 23 is arranged through the limiting guide groove 133. A limiting block 24 is detachably provided on the insertion end of the limiting guide 23. The width dimension of the limiting block 24 is larger than the groove diameter of the limiting guide groove 133. It can be understood that in this utility model, by setting the limiting guide 23 and the limiting guide groove to cooperate with each other for limiting, the second bent panel 21 is prevented from coming out of the first bent panel in the height direction, and the second bent panel 21 is prevented from coming out of the first bent panel in the width direction (the direction from the front of the second bent panel to the back).

[0048] More preferably, in order to cover the assembly guide groove 132 while adjusting the size of the casting sealing surface 101, the second sealing side wall surface 211 corresponding to the second bent panel 21 extends vertically downward to the outside of the vertical edge of the second reinforcing rib plate 22.

[0049] Understandably, the limiting guide groove 133 and the limiting guide member 23 are arranged in a one-to-one correspondence. The number of limiting guide members 23 can be one, two, three, or other quantities. In another embodiment of this utility model, the number of limiting guide members 23 is two, and the two limiting guide members 23 are arranged at intervals. The limiting guide members 23 are located inside the second reinforcing rib plate 22 and between the second reinforcing rib plate 22 and the lifting and positioning mechanism 30.

[0050] Furthermore, the outer edge of the top surface of the first bent panel is bent downward to form an upper skirt.

[0051] Preferably, the limiting guide 23 is a limiting guide post and the limiting guide groove 133 is a cylindrical groove; or, the limiting guide 23 is a limiting guide plate and the limiting guide groove 133 is a square groove.

[0052] Preferably, the bottom insertion end of the limiting guide 23 is provided with a limiting through hole, and the limiting block 24 includes a limiting bolt and a limiting nut. The threaded end of the limiting bolt passes through the limiting through hole in the transverse direction and is threadedly connected to the limiting nut.

[0053] Understandably, in other embodiments, the limiting block 24 can also be a limiting buckle, a limiting ear plate, or other structural components, as long as the limiting block 24 is detachably disposed at the bottom of the limiting guide 23 and the width dimension of the limiting block 24 is greater than the groove diameter of the limiting guide groove 133.

[0054] Furthermore, the outer edge of the bottom surface of the first bent panel is bent upward to form a lower skirt.

[0055] Furthermore, the sealing mold frame 12 includes supporting side plates 121 and supporting reinforcing ribs 122. The two supporting side plates 121 are arranged opposite each other on both sides of the length direction of the first sealing plate 13 and connected by the supporting reinforcing ribs 122. The mold support tube 40 is arranged in a one-to-one correspondence with the supporting side plates 121. Preferably, the mold support tube 40 is welded to the supporting side plates 121. It can be understood that in this utility model, the first sealing plate 13, the supporting reinforcing ribs 122, and the supporting side plates 121 are welded together.

[0056] Understandably, in this utility model, the first bent panel's bent structure facilitates the overall strengthening of the first sealing mold 10. The first bent panel has an assembly guide groove 132, a limiting guide groove 133, and a lifting threaded hole 134. This allows the second reinforcing rib 22 inside the second bent panel 21 to rise and fall within the assembly guide groove 132, the limiting guide 23 inside the second bent panel 21 to rise and fall within the limiting guide groove 133, and the lifting screw 31 in the lifting positioning mechanism 30 to rise and fall within the lifting thread. The first bent panel and the supporting reinforcing rib 122 strengthen the structure of the first sealing mold 10. The second bent panel 21, with its bent structure, strengthens the overall structure of the second sealing mold 20. When the second bent panel 21 extends and retracts to a certain position, it clamps and fixes the waterstop. The second reinforcing rib 22 further strengthens the overall structure of the second sealing mold 20.

[0057] Furthermore, the first end of the lifting and positioning mechanism 30 is disposed on the first sealing mold 10, and the second end of the lifting and positioning mechanism is arranged to support the second sealing mold 20. The lifting and positioning mechanism 30 is one of the following: hydraulic lifting mechanism, electric lifting mechanism, air pressure bladder, memory alloy spring, and threaded lifting mechanism.

[0058] Furthermore, the lifting and positioning mechanism 30 includes a lifting screw 31 and a locking nut 32. The second bent panel 21 includes a supporting top surface 212 arranged adjacent to the second sealing side wall 211. The first sealing plate 13 is provided with a lifting threaded hole 134. The threaded end of the lifting screw 31 passes through the locking nut 32 and the lifting threaded hole 134 in sequence and then supports the supporting top surface 212. It can be understood that, in an optional embodiment of this utility model, the threaded end of the lifting screw 31 passes through the locking nut 32 and the lifting threaded hole 134 in sequence and then supports the second bent panel 21.

[0059] This utility model provides a specific tunnel secondary lining under-sealing template 100 as follows: The tunnel secondary lining under-sealing template 100 includes a lifting and positioning mechanism 30, a first sealing template 10, a second sealing template 20, a support pipe body 40, a support insertion pipe 50, and an installation and assembly connector 60. The installation and assembly connector 60 passes through the first sealing plate 13 and is fixedly connected to the first sealing plate 13. The second sealing template 20 is movably disposed on the first sealing template 10 along the height direction and is located above the installation and assembly connector 60. The lifting and positioning mechanism 30 drives the second sealing template 20 to move and position itself in the height direction. The overlapping area of ​​the second sealing sidewall 211 and the first sealing sidewall 131 is adjusted to adjust the size of the casting sealing surface 101. The first sealing mold 10 includes a connecting ear plate 11, a sealing mold frame 12, a first sealing plate 13 (first bent panel), and a first reinforcing rib plate 14. The first sealing plate 13 is arranged to wrap around the sealing mold frame 12 from the top part. The sealing mold frame 12 includes a supporting side plate 121 and a supporting reinforcing rib plate 122. The two supporting side plates 121 are arranged opposite to each other on both sides of the length direction of the first sealing plate 13 and are fixedly connected by the supporting reinforcing rib plate 122. Connecting ear plates 11 and supporting side plates 121 are arranged one-to-one, and supporting mold tubes 40 and supporting side plates 121 are arranged one-to-one. Connecting ear plates 11 are hinged to the bottom of the corresponding supporting side plates 121 by pins. The second sealing mold 20 includes a second bent panel 21, a second reinforcing rib plate 22, a limiting guide 23, and a limiting block 24. The second reinforcing rib plate 22 reinforces and fixes each wall surface of the second bent panel 21 from the inside. The limiting guide 23 is located inside the second reinforcing rib plate 22 and is positioned between the second reinforcing rib plate 22 and the lifting positioning block. Between the mechanisms 30, the limiting block 24 is detachably disposed at the bottom end of the limiting guide. The first bent panel has an assembly guide groove 132 arranged corresponding to the second reinforcing rib plate 22 and a limiting guide groove 133 arranged corresponding to the limiting guide 23. The lifting and positioning mechanism 30 is located between the two supporting side plates 121. The lifting and positioning mechanism 30 includes a lifting screw 31 and a locking nut 32. The first sealing plate 13 of the first bent panel is provided with a lifting threaded hole 134. The threaded end of the lifting screw 31 passes through the locking nut 32 and the lifting threaded hole 134 in sequence and then supports the second bent panel 21. The connecting ear plate 11 is fixed to the secondary lining template of the trolley by connecting bolts. The connecting ear plate 11 is connected to the corresponding support side plate 121 by a pin, so that the first sealing mold 10 rotates around the central axis of the pin. One end of the installation assembly connector 60 (installation square tube) passes through the first sealing plate 13 and is fixedly connected to the first sealing plate 13. The other end of the installation assembly connector 60 is fixed to the secondary lining template of the trolley by bolts to fix the first sealing mold 10. The support tube 50 is installed in the support tube body 40 by locking bolts to support the polymer sealing mold, wooden mold, etc. above the waterstop.

[0060] In practical implementation, after installing and assembling the first sealing mold 10 and the second sealing mold 20, flip the first sealing mold 10 and the second sealing mold 20 upwards. Adjust the lifting screw 31 in the lifting and positioning mechanism 30 to lift the second bent panel 21 in the second sealing mold 20. The second reinforcing rib 22, the limiting guide 23, and the limiting block 24 in the second sealing mold 20 rise synchronously. Among them, the second reinforcing rib 22 rises in the assembly guide groove 132, and the limiting guide 23 rises in the limiting guide groove 133 (if the lifting is excessive, the groove opening will lock the lower end of the limiting guide 23 to limit it, ensuring that the second sealing mold 20 will not come out of the first sealing mold 10). The lifting screw 31 and the lifting screw... The perforated 134, in conjunction with the lifting mechanism, achieves stepless adjustment of the lifting height until it reaches the appropriate position and is locked by the locking nut 32. The adjustment of the lifting and positioning mechanism 30 is then stopped, and the waterstop is fixed (by installing a polymer sealing mold, wooden mold, etc. on the upper part of the waterstop, the waterstop is clamped and fixed). Then, the lining is laid. After the lining is completed, the locking nut 32 in the lifting and positioning mechanism 30 is adjusted so that the second sealing mold 20, under its own weight and external force, is lowered back to the initial position by the guidance of the second reinforcing rib plate 22 and the limiting guide 23. The first sealing mold 10 and the second sealing mold 20 are flipped over and demolded with the lining trolley, completing the construction of the current segment. After the second lining trolley is demolded, it moves to the next mold and repeats the above operation.

[0061] The tunnel secondary lining sealing template 100 of this utility model has the following advantages: it abandons the traditional welding and fixing, and realizes stepless precise adjustment; it is composed of multiple splicable steel modules, and the lifting and lowering can be adjusted to achieve precise fixing of the waterstop; it adopts a mechanical lifting mechanism, which has a simple structure and simple operation, does not require the addition of adjusting pads to achieve height change, is easy to disassemble and use, and has low cost.

[0062] Please refer to Figure 9 This utility model also provides a tunnel secondary lining sealing template assembly, including the aforementioned lower tunnel secondary lining sealing template 100, as well as an upper tunnel secondary lining sealing template 300 and a middle tunnel secondary lining sealing template 200. The middle tunnel secondary lining sealing template 200 is arranged above the lower tunnel secondary lining sealing template 100, and a first steel reinforcement clearance gap is left between the middle tunnel secondary lining sealing template 200 and the lower tunnel secondary lining sealing template 100. The upper tunnel secondary lining sealing template 300 is arranged above the middle tunnel secondary lining sealing template 200, and a second steel reinforcement clearance gap is left between the upper tunnel secondary lining sealing template 300 and the middle tunnel secondary lining sealing template 200.

[0063] Furthermore, the tunnel secondary lining sealing template 300 includes rubber and pads stacked along the height direction, or the tunnel secondary lining sealing template 300 is a sealing plate with an adjustable size for casting and sealing the side.

[0064] Furthermore, the tunnel secondary lining middle sealing template 200 includes middle sealing combination plates arranged sequentially along the height direction. A waterstop installation gap is left between adjacent middle sealing combination plates. The middle sealing combination plate includes a first movable plate and a second movable plate arranged opposite each other with overlapping sidewalls. The first movable plate is movably arranged relative to the second movable plate in the height direction to adjust the size of the sidewall overlap. Understandably, the first movable plate is movably arranged relative to the second movable plate in the height direction to adjust the size of the sidewaterstop installation gap.

[0065] Understandably, the size of the sealing side can be adjusted by arranging different numbers of rubber and pads; the size of the sealing side can also be adjusted by designing a structure such as the sealing template 100 under the tunnel secondary lining; and the size of the overlapping sidewalls of the central sealing combination plate can be adjusted by designing a structure such as the sealing template 100 under the tunnel secondary lining.

[0066] In conventional working conditions, there is only one layer of pre-embedded reinforcing steel. This utility model's tunnel secondary lining sealing template assembly is designed to address the issue in water conservancy and hydropower projects where the sealing template cannot seal two layers of reinforcing steel plus a waterstop. In one specific embodiment, the tunnel secondary lining sealing template assembly includes, from bottom to top, a lower tunnel secondary lining sealing template 100, two sets of central sealing combination plates, rubber, and pads. The lower tunnel secondary lining sealing template 100 adopts a telescopic welded structure, which extends and retracts to the bottom surface of the first layer of reinforcing steel for sealing. Above the first layer of reinforcing steel, a central sealing combination plate that can extend and retract at both ends is designed to provide telescopic sealing between the first layer of reinforcing steel and the second layer of waterstop. Above the second layer of waterstop, a central sealing combination plate that can extend and retract at both ends is designed to seal between the second layer of waterstop and the third layer of reinforcing steel. Above the third layer of reinforcing steel is a combination structure of pads and rubber, sealing the third layer of reinforcing steel. The waterstop is positioned between the two telescopic structures and is adjusted and fixed by the two telescopic structures. The entire sealing structure was reinforced using square tubes and wedges.

[0067] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealing template for tunnel secondary lining, characterized in that, It includes a lifting and positioning mechanism (30), a first sealing mold (10), and a second sealing mold (20). The second sealing mold (20) is located above the first sealing mold (10) and is movably arranged relative to the first sealing mold (10) in the height direction. The first sealing mold (10) includes a connecting ear plate (11), a sealing mold frame (12), and a first sealing plate (13). The connecting ear plate (11) is connected to the sealing mold frame (12), and the first sealing plate (13) is fixedly disposed on the sealing mold frame (12) and located above the connecting ear plate (11). The back of the first sealing plate (13) has a first sealing sidewall surface (131). The second sealing mold (20) includes a second bent panel (21), the second bent panel (21) includes a second sealing sidewall (211), the second sealing sidewall (211) is used to be attached to the first sealing sidewall (131) from the back side of the first sealing sidewall (131), the second sealing sidewall (211) and the first sealing sidewall (131) partially overlap and are spliced ​​to form a casting sealing surface (101). The lifting and positioning mechanism (30) drives the second sealing mold (20) to move and position relative to the first sealing mold (10) in the height direction, thereby adjusting the overlapping area of ​​the second sealing side wall (211) and the first sealing side wall (131) to adjust the size of the casting sealing surface (101).

2. The tunnel secondary lining sealing template according to claim 1, characterized in that, The tunnel secondary lining sealing template also includes a support pipe (50) and a support pipe body (40). The support pipe body (40) is connected to the sealing template frame (12). The support pipe (50) is inserted into the support pipe body (40) and positioned by a locking component.

3. The tunnel secondary lining sealing template according to claim 1, characterized in that, The tunnel secondary lining sealing template also includes an installation assembly connector (60), the first end of which is fixed on the first sealing plate (13), the second end of which is cantilevered outward, and the second sealing template (20) is located above the installation assembly connector (60).

4. The tunnel secondary lining sealing template according to claim 1, characterized in that, The second bent panel (21) is an L-shaped plate or an inverted U-shaped plate, and the second sealing mold (20) also includes a second reinforcing rib plate (22) disposed inside the second bent panel (21). The first sealing plate (13) adopts a first bent panel, and the first sealing mold (10) further includes a first reinforcing rib plate (14) disposed inside the first bent panel. The first bent panel is provided with an assembly guide groove (132) corresponding to the second reinforcing rib plate (22). The first reinforcing rib plate (14) and the assembly guide groove (132) are staggered. The second reinforcing rib (22) is inserted into the assembly guide groove (132), and the casting and sealing side wall of the second bent panel (21) is arranged to fit against the casting and sealing side wall of the first bent panel.

5. The tunnel secondary lining sealing template according to claim 4, characterized in that, The second sealing mold (20) also includes a limiting guide (23) disposed inside the second bent panel (21), the limiting guide (23) being disposed on the inner side of the second reinforcing rib plate (22). The top surface of the first bent panel is provided with a limiting guide groove (133), the limiting guide (23) is arranged through the limiting guide groove (133), and a limiting block (24) is detachably provided on the insertion end of the limiting guide (23). The length dimension of the limiting block (24) is greater than the groove diameter of the limiting guide groove (133).

6. The tunnel secondary lining sealing template according to claim 5, characterized in that, The limiting guide component (23) is a limiting guide post, and the limiting guide groove (133) is a cylindrical groove, or... The limiting guide component (23) adopts a limiting guide plate, and the limiting guide groove (133) is a square groove.

7. The tunnel secondary lining sealing template according to claim 5, characterized in that, The bottom insertion end of the limiting guide (23) is provided with a limiting through hole. The limiting block (24) includes a limiting bolt and a limiting nut. The limiting bolt passes through the limiting through hole and is threadedly connected to the limiting nut.

8. The tunnel secondary lining sealing template according to claim 5, characterized in that, The tunnel secondary lining sealing template also includes a support pipe (50) and a support pipe body (40). The sealing mold frame (12) includes a supporting side plate (121) and a supporting reinforcing rib plate (122). The two supporting side plates (121) are arranged opposite to each other on both sides of the length direction of the first sealing plate (13) and connected by the supporting reinforcing rib plate (122). The connecting ear plate (11) and the supporting side plate (121) are arranged in a one-to-one correspondence. The connecting ear plate (11) is connected to the corresponding supporting side plate (121). The formwork tube (40) and the supporting side plate (121) are arranged in a one-to-one correspondence. The formwork tube (40) is connected to the corresponding supporting side plate (121).

9. The tunnel secondary lining sealing template according to claim 5, characterized in that, The first end of the lifting and positioning mechanism (30) is disposed on the first sealing mold (10), and the second end of the lifting and positioning mechanism (30) is arranged to support the second sealing mold (20). The lifting and positioning mechanism (30) is one of the following: hydraulic lifting mechanism, electric lifting mechanism, air pressure bladder, memory alloy spring, and threaded lifting mechanism.

10. The tunnel secondary lining sealing template according to claim 9, characterized in that, The lifting and positioning mechanism (30) includes a lifting screw (31) and a locking nut (32). The second bent panel (21) includes a supporting top surface (212) arranged adjacent to the second sealing side wall (211). The first sealing plate (13) is provided with a lifting threaded hole (134). The threaded end of the lifting screw (31) passes through the locking nut (32) and the lifting threaded hole (134) in sequence and then supports the supporting top surface (212).

11. A tunnel secondary lining sealing template assembly, characterized in that, Including the tunnel secondary lining sealing template (100) as described in any one of claims 1 to 10, It also includes a tunnel secondary lining upper sealing template (300) and a tunnel secondary lining middle sealing template (200). The tunnel secondary lining middle sealing template (200) is arranged above the tunnel secondary lining lower sealing template (100). A first steel reinforcement clearance gap is left between the tunnel secondary lining middle sealing template (200) and the tunnel secondary lining lower sealing template (100). The upper sealing template (300) of the tunnel secondary lining is arranged above the middle sealing template (200) of the tunnel secondary lining, and a second steel reinforcement clearance is left between the upper sealing template (300) of the tunnel secondary lining and the middle sealing template (200) of the tunnel secondary lining.

12. The tunnel secondary lining sealing template assembly according to claim 11, characterized in that, The tunnel secondary lining upper sealing template (300) includes rubber and / or pads stacked along the height direction, or the tunnel secondary lining upper sealing template (300) is a sealing plate with an adjustable size for casting and sealing the side.

13. The tunnel secondary lining sealing template assembly according to claim 11, characterized in that, The tunnel secondary lining middle sealing template (200) includes middle sealing combination plates arranged sequentially along the height direction, with a waterstop installation gap left between two adjacent middle sealing combination plates. The central sealing assembly includes a first movable plate and a second movable plate that are spliced ​​together and have overlapping sidewalls. The first movable plate is movably arranged relative to the second movable plate in the height direction to adjust the size of the overlap of the sidewalls.

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