End sealing plug device for tunnel secondary lining pouring

Abstract

The utility model discloses an end sealing plug device for tunnel secondary lining pouring, which comprises a water stop belt and further comprises a plurality of clamping groove groups, a plurality of end sealing plugs, a plurality of end sealing plugs, a plurality of end sealing plugs and a plurality of end sealing plugs, and the clamping groove groups are respectively and annularly arranged on the inner circumference of the end of a secondary lining trolley; the plurality of rotary template supporting assemblies are annularly arranged on the periphery of the end part of the secondary lining trolley respectively, and each rotary template supporting assembly is rotatably connected to the secondary lining trolley; the telescopic supporting structures are arranged above the rotary template supporting assemblies respectively; the movable cushion blocks are arranged above the telescopic supporting structures respectively; the elastic cushion blocks are respectively arranged above the movable cushion blocks; the supporting machining rods are arranged in the corresponding clamping groove sets in a penetrating and sleeved mode respectively and used for limiting outward movement of the rotary template supporting assembly, the telescopic supporting structure, the movable cushion block and the elastic cushion block. According to the utility model, the complicated process of splicing the secondary lining end plug template in each cycle of the tunnel is effectively solved, the clamping groove arranged on the trolley is used for reinforcing, the process is simple and reliable, and the construction progress can be greatly accelerated.

Description

Technical Field

[0001] This utility model relates to a plugging device, specifically a sealing plugging device for tunnel secondary lining pouring, belonging to the field of building construction technology. Background Technology

[0002] Generally speaking, in an era of rapid development of public transportation, urban rail, highways and railways have developed rapidly and received strong support from the state. In the construction of these projects, tunnels of various structural forms are involved, especially in western my country, where most areas are mountainous. When building transportation projects, tunnels are basically used to cross mountains and ridges.

[0003] In tunnel construction, the secondary lining is an essential main support structure, and the quality of its construction is crucial to construction safety, especially in later operational phases. The secondary lining typically consists of impermeable concrete and reinforcing steel. To prevent water seepage at construction joints and settlement / expansion joints, back-mounted and embedded waterstops are usually installed circumferentially at these joints. During construction, to ensure that the secondary lining concrete is poured with each cycle of the lining trolley, a sealing plate is installed on one side of the lining trolley for sealing.

[0004] The traditional method involves adding a circumferential support steel frame to the end of the secondary lining trolley, and then assembling and reinforcing the frame with narrow wooden strips of varying lengths. While this method is convenient and readily available, it suffers from severe grout leakage between formwork panels and between the formwork and the initial support surface. Furthermore, it fails to effectively secure back-attached and embedded waterstops, which are prone to deformation, misalignment, and displacement during pouring, severely impacting the water-stopping effect. Additionally, because the secondary lining concrete is pumped from a ground pump, and considering the lateral thrust and pressure from the concrete's height of over 10 meters, the reinforcement of the end-forming panels, especially at the arch foot, is particularly crucial. Otherwise, formwork displacement and bursting are highly likely. Moreover, each installation requires a significant amount of labor and time for arranging and reinforcing the end-forming templates.

[0005] Therefore, the key to solving the above-mentioned technical problems lies in developing a safe, reliable, and practical end-sealing device for tunnel secondary lining pouring. Summary of the Invention

[0006] In view of the many defects and shortcomings of the above-mentioned background technology, this utility model has made improvements and innovations, aiming to provide a modular design and easy-to-install and dismantle end-sealing device for tunnel secondary lining pouring. It can reduce the input of labor and complete the installation and dismantling operations in a shorter time. It effectively solves the complex process of assembling the end-sealing template for each cycle of tunnel secondary lining. At the same time, it uses the slots set on the trolley for reinforcement, which is simple and reliable, and can greatly speed up the construction progress and create favorable conditions for secondary lining construction.

[0007] Another objective of this invention is to effectively solve problems such as grout leakage and waterstop displacement. It also provides convenient and effective reinforcement, can be reused after installation and positioning, and has a simple process, high construction efficiency, and wide applicability.

[0008] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides an end-sealing plug device for tunnel secondary lining pouring, which is achieved by adopting the following design structure and the following technical solution:

[0009] An end-sealing device for tunnel secondary lining pouring includes a waterstop (7) and a secondary lining trolley (8), and further includes:

[0010] Multiple slot groups (1) are respectively arranged circumferentially on the inner periphery of the end of the secondary lining trolley (8);

[0011] Several rotating template support components (2) are respectively arranged circumferentially on the outer periphery of the end of the secondary lining trolley (8), and each rotating template support component (2) is rotatably connected to the secondary lining trolley (8);

[0012] Telescopic support structure (3) is set above each rotating template support component (2) to adjust the height and adapt to different support heights;

[0013] Movable pads (4) are respectively set above each telescopic support structure (3);

[0014] Elastic pads (5) are respectively placed above each movable pad (4);

[0015] Support processing rods (6) are respectively fitted into the corresponding slot groups (1) to limit the outward movement of the rotating template support assembly (2), telescopic support structure (3), movable pad (4) and elastic pad (5).

[0016] Preferably, the rotating template support assembly (2) includes:

[0017] Rotary mounting base (21) is circumferentially connected to the inner circumference of the end of the secondary lining trolley (8);

[0018] A rotating template (22) is rotatably connected at one end to a rotating mounting base (21) via a connector;

[0019] Among them, the cross section of the rotating template (22) has an "L" shaped structure.

[0020] Preferably, the telescopic support structure (3) includes:

[0021] The top structural support (31) has multiple support columns (311) connected to the top of it.

[0022] Bottom structural support (32), with multiple guide rails (321) on the bottom structural support (32);

[0023] Rotary connecting components (33) are respectively connected to the upper part of the top structural support (31);

[0024] Adjusting component (34), one end of which is rotatably connected to the rotating connection assembly (33), and the other end is threadedly connected to the bottom structural support component (32);

[0025] Limit locking assembly (35), the limit locking assembly (35) passes through each support column (311) and is connected to the corresponding guide rail (321);

[0026] One end of the top structural support (31) is snapped onto the upper outside of the bottom structural support (32).

[0027] Preferably, the top structural support (31) includes:

[0028] Multiple support columns (311) are connected to the top support baffle (312) above the top support baffle, and each support column (311) has a through hole at its non-connecting end;

[0029] Top support baffle (312);

[0030] Among them, the side plates of the support column (311) and the top support baffle (312) are spaced apart.

[0031] Preferably, the bottom structural support member (32) includes:

[0032] Guide rail (321) is connected to both ends and the middle of the side plate of the bottom support baffle (322);

[0033] Bottom support baffle (322);

[0034] Several connecting plates (323) are vertically connected to the inside of the bottom support baffle (322);

[0035] Support block (324) is connected above the two connecting plates (323) at both ends. The middle of the support block (324) is vertically provided with an internal thread through hole that is compatible with the adjusting part (34).

[0036] The guide rail (321) has a vertical slot in the middle.

[0037] Preferably, the rotating connection assembly (33) includes:

[0038] Rotary sleeve (331) is connected to the top support baffle (312) between two adjacent support columns (311) and has external threads on the outside.

[0039] Rotary connecting sleeve (332) is threaded to the outside of rotating sleeve (331);

[0040] The lower end of the rotating connecting sleeve (332) is provided with an adjustment through hole that is compatible with the adjusting component (34).

[0041] Preferably, the adjusting member (34) includes a screw section, one end of which is connected to a rotating head, and the other end is connected to an adjusting head;

[0042] The limiting locking assembly (35) includes a slider (351) and a locking rod (352). The slider (351) is slidably connected in the guide rail (321), and the locking rod (352) passes through the through hole of the support column (311) and the slot of the guide rail (321) in sequence and is threadedly connected to the slider (351).

[0043] Preferably, the slot group (1) includes at least two square slots that are vertically coaxially connected to the ends of the secondary lining trolley (8);

[0044] The width of the support processing rod (6) is adapted to the width of the slot;

[0045] Among them, a tightening threaded hole is also provided through the middle of the outer side of the slot, and a tightening bolt (11) is connected to the threaded hole.

[0046] Preferably, the movable pad (4) is a cuboid structure with one end open and multiple openings inside;

[0047] Among them, the movable pad (4) is made of a light-transmitting material.

[0048] Preferably, the waterstop (7) includes a back-attached waterstop (71) and a centrally embedded waterstop (72). The back-attached waterstop (71) is disposed between the elastic pad (5) and the inner wall of the initial masonry (9), and the centrally embedded waterstop (72) is disposed between the non-rotating end of the rotating template (22) and the bottom end of the bottom support baffle (322).

[0049] The working principle is: When this utility model is being constructed, the initial masonry (9), inverted arch (91), inverted arch filling (92), and secondary lining reinforcement (93) are completed first. After the secondary lining trolley (8) is spliced ​​and moved to the designated position, the secondary lining trolley (8) is locked.

[0050] When in use, the staff adjusts the template of the secondary lining trolley (8) to a suitable position, and then installs and fixes the rotating template (22) on the rotating mounting seat (21) on the secondary lining trolley (8) through the connector. After it is fixed, the rotating template (22) is flipped over so that the template surface of the rotating template (22) is perpendicular to the secondary lining trolley (8) (the template surface is parallel to the ground). The gaps and misalignments between each rotating template (22) are checked and adjusted. After the adjustment is completed, the rotating template (22) is fixed firmly, and the embedded waterstop (72) is laid on the top plate of the rotating template (22). The secondary lining steel bars (93) and the embedded waterstop (72) are fixed on the top plate of the rotating template (22) through the fastener. During construction, it should be noted that the secondary lining steel bars (93) should be evenly distributed, the steel bar spacing should meet the requirements, and the embedded waterstop (72) should be free of wrinkles and damage.

[0051] Then, the staff placed the bottom structural support (32) of the assembled telescopic support structure (3) above the embedded waterstop (72);

[0052] Next, the staff placed movable pads (4) above the top structural support (31), checked the gaps between the movable pads (4), and made adjustments. After the adjustments were completed, the back-attached waterstop (71) was arranged around the initial masonry (9).

[0053] Then, the workers filled the space between the movable pad (4) and the back-adhesive waterstop (71) one by one with the elastic pad (5); then, the workers started to rotate the adjusting head of the adjusting part (34) by rotating the tool connected to the adjusting part (34). The adjusting part (34) rotated freely in the rotating sleeve (331). The screw section of the adjusting part (34) drove the support block (324) away from the rotating sleeve (331), so that the amount of extension between the top structural support (31) and the bottom structural support (32) continued to increase. When the adjusting rod (16) could not be turned, the entire plug device was also tightened. Finally, the bottom structural support (32) and the top structural support (31) were locked by rotating the locking rod (352) to prevent slippage between the two.

[0054] Finally, the workers pass the support processing rod (6) through the slot groups (1) on the secondary lining trolley (8) and extend it to the initial lining (9) position. Then, they tighten the bolts (11) to fix the support processing rod (6) firmly. This completes the installation of the secondary lining end cap plate. After the installation is completed, the corresponding concrete pouring work of the subsequent construction process can be carried out.

[0055] The beneficial effects of this utility model compared with the prior art are:

[0056] 1. In this utility model, all parts can be centrally processed in the factory, the installation process is simple, and a rotating template is set up so that the installation and dismantling operations can be completed by rotation. The same is true for the next secondary lining construction cycle, resulting in high construction efficiency. Compared with traditional processes, it can reduce the input of labor and complete the installation and dismantling operations in a shorter time. It effectively solves the complex process of assembling the end plug template of the tunnel lining in each cycle. At the same time, the use of the slots set on the trolley for reinforcement is simple and reliable, which can greatly speed up the construction progress and create favorable conditions for secondary lining construction.

[0057] 2. This utility model can achieve tight splicing between each other, effectively fix the back-attached and embedded waterstops, effectively prevent the waterstops from deforming, misaligning and shifting during the pouring process, and the elastic pads can also change with the space of different sizes of the movable pads to the initial support surface, effectively solving serious problems such as grout leakage of the end plug template plugs and waterstop misalignment and shifting during the second lining of the tunnel in each cycle.

[0058] 3. The movable pad of this utility model is made of light-transmitting material. During the construction of the secondary lining concrete, the location of the concrete pouring can be seen by shining a flashlight. This effectively prevents misjudgment caused by factors such as pump pressure, concrete properties, and pouring time, which may lead to the mistaken belief that the concrete has filled the entire space. This effectively ensures that the secondary lining concrete reaches a full state during the pouring process.

[0059] 4. The telescopic support structure in this utility model can be adjusted according to the amount of telescopic movement as needed, and can be continuously adjusted according to the different thicknesses of the secondary lining caused by different grades of tunnel surrounding rock; at the same time, it can also be adjusted by adding movable pads, which has a wide range of applications and strong adaptability.

[0060] 5. The telescopic support structure in this utility model is ingeniously designed and can achieve a better support effect. It uses two support methods, namely, adjusting parts and limiting locking components, to achieve stable support.

[0061] 6. The material in this utility model has high strength, good toughness, and strong resistance to damage. It is not easily damaged even if it is accidentally dropped from a height and can be reused many times, which greatly reduces construction costs.

[0062] 7. The slot assembly of this utility model is also threaded with a tightening bolt, which can better fix and support the processing rod;

[0063] 8. The components of this utility model are tightly spliced ​​together with minimal misalignment at the joints. The template surface is flat and smooth, making it less prone to deformation during concrete pouring and resulting in good appearance quality of the concrete after pouring. Attached Figure Description

[0064] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0065] Figure 1 This is one of the usage state diagrams of this utility model;

[0066] Figure 2 This is the second diagram showing the usage state of this utility model;

[0067] Figure 3 This is the third diagram showing the usage state of this utility model;

[0068] Figure 4 This is the fourth diagram showing the usage state of this utility model;

[0069] Figure 5 This is an exploded view of the overall installation of this utility model;

[0070] Figure 6 This is an exploded view of the unit assembly of this utility model;

[0071] Figure 7 This is a schematic diagram of the partial connection relationship of this utility model;

[0072] Figure 8 This is a schematic diagram of the telescopic support structure (3) of this utility model;

[0073] Figure 9 This is one of the exploded views of the telescopic support structure (3) of this utility model;

[0074] Figure 10 This is the second exploded view of the telescopic support structure (3) of this utility model;

[0075] Figure 11 This is a cross-sectional view of the telescopic support structure (3) of this utility model;

[0076] Figure 12 This is a schematic diagram of the top structural support member (31) of this utility model;

[0077] Figure 13 This is a side view of the top structural support member (31) of this utility model;

[0078] Figure 14 This is one of the usage diagrams of another design structure of this utility model;

[0079] Figure 15 This is the second diagram showing another design structure of this utility model.

[0080] Figure 16 This is the third diagram showing another design structure of this utility model;

[0081] Figure 17This is the fourth diagram showing another design structure of this utility model;

[0082] Figure 18 This is an exploded view of the unit installation of another design structure of this utility model;

[0083] Figure 19 This is an exploded view of the overall installation of another design structure of this utility model;

[0084] Figure 20 This is one of the overall structural schematic diagrams of another design structure of the telescopic support structure (3) of this utility model;

[0085] Figure 21 This is the second overall structural schematic diagram of another design structure of the telescopic support structure (3) of this utility model;

[0086] Figure 22 This is the third overall structural schematic diagram of another design structure of the telescopic support structure (3) of this utility model;

[0087] Figure 23 This is the fourth overall structural schematic diagram of another design structure of the telescopic support structure (3) of this utility model;

[0088] Figure 24 This is a partial structural diagram of another design structure of this utility model;

[0089] In the figure, the numbers are: 1—slot group, 11—tightening bolt;

[0090] 2—Rotating template support assembly; 21—Rotating mounting base; 22—Rotating template;

[0091] 3—Telescopic support structure, 31—Top structural support component, 311—Support column, 312—Top support baffle, 32—Bottom structural support component, 321—Guide rail, 322—Bottom support baffle, 323—Several connecting plates, 324—Support block, 325—Connecting groove, 33—Rotary connecting assembly, 331—Rotary sleeve, 332—Rotary connecting sleeve, 34—Adjusting component, 35—Limit locking assembly, 351—Slider, 352—Locking rod;

[0092] 4—Moveable pad;

[0093] 5—Elastic pad;

[0094] 6—Support processing rod;

[0095] 7—Waterstop, 71—Back-adhesive waterstop, 72—Embedded waterstop;

[0096] 8—Secondary lining trolley; 81—Pouring hole or pouring chamber;

[0097] 9—Initial masonry, 91—Inverted arch, 92—Inverted arch filling, 93—Secondary lining reinforcement.

[0098] 10—Pouring pipe, 101—Concrete. Detailed Implementation

[0099] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0100] like Figures 1 to 24 As shown, this utility model specifically discloses a sealing plug device for tunnel secondary lining pouring, including a waterstop 7 and a secondary lining trolley 8, and further comprising:

[0101] Multiple slot groups 1 are respectively arranged circumferentially on the inner periphery of the end of the secondary lining trolley 8;

[0102] Several rotating template support components 2 are respectively arranged circumferentially around the outer periphery of the end of the secondary lining trolley 8, and each rotating template support component 2 is rotatably connected to the secondary lining trolley 8;

[0103] Telescopic support structure 3 is respectively installed above each rotating template support component 2 to adjust the height and adapt to different support heights;

[0104] Movable pad 4 is respectively installed above each telescopic support structure 3;

[0105] Elastic pads 5 are respectively positioned above each movable pad 4;

[0106] Support processing rods 6 are respectively fitted into corresponding slot groups 1 to limit the outward movement of rotating template support assembly 2, telescopic support structure 3, movable pad 4 and elastic pad 5.

[0107] Furthermore, such as Figure 4 and Figure 7 As shown, the rotating template support assembly 2 includes:

[0108] Rotary mounting base 21, the rotary mounting base 21 is circumferentially connected to the inner circumference of the end of the secondary lining trolley 8;

[0109] Rotary template 22, one end of which is rotatably connected to rotary mounting base 21 via a connector;

[0110] The cross-section of the rotating template 22 is L-shaped.

[0111] like Figures 9 to 11 As shown, the telescopic support structure 3 includes:

[0112] Top structural support 31, with multiple support columns 311 connected inside the top structural support 31;

[0113] The bottom structural support component 32 is provided with multiple guide rails 321.

[0114] Rotary connecting assembly 33 is connected to the upper part of the top structural support member 31;

[0115] Adjusting component 34, one end of which is rotatably connected to the rotating connection assembly 33, and the other end is threadedly connected to the bottom structural support component 32;

[0116] Limiting and locking components 35 pass through each support column 311 and are connected to the corresponding guide rail 321;

[0117] One end of the top structural support 31 is snapped onto the upper exterior of the bottom structural support 32.

[0118] Specifically, such as Figures 12 to 13 As shown, the top structural support member 31 includes:

[0119] Multiple support columns 311 are connected to the upper part of the top support baffle 312, and each support column 311 has a through hole at its non-connecting end.

[0120] Top support baffle 312;

[0121] The support column 311 and the side plate of the top support baffle 312 are spaced apart.

[0122] In this utility model, the cross-section of the top support baffle 312 is "L" shaped.

[0123] Specifically, such as Figure 10 As shown, the bottom structural support member 32 includes:

[0124] Guide rail 321 is connected to both ends and the middle of the side plate of the bottom support baffle 322 respectively;

[0125] Bottom support baffle 322;

[0126] Several connecting plates 323 are vertically connected to the inside of the bottom support baffle 322;

[0127] Support block 324 is connected above the two connecting plates 323 at both ends. The middle of support block 324 has a vertically opened internal threaded through hole that is compatible with adjustment component 34.

[0128] The guide rail 321 has a vertical slot in the middle.

[0129] In this utility model, the bottom of the bottom support baffle 322 is also provided with several connecting grooves 325; the side plate of the bottom support baffle 322 is closely fitted with the side plate of the top support baffle 312.

[0130] More specifically, such as Figure 11 As shown, the rotating connection assembly 33 includes:

[0131] Rotary sleeve 331 is connected to the upper part of the top support baffle 312 between two adjacent support columns 311, and the outer side of the rotating sleeve 331 is provided with external thread.

[0132] Rotary connecting sleeve 332 is threadedly connected to the outside of rotating sleeve 331;

[0133] The lower end of the rotating connecting sleeve 332 is provided with an adjustment through hole that is adapted to the adjusting member 34.

[0134] In this utility model, the inner diameter of the rotating sleeve 331 is larger than the outer diameter of the rotating head of the adjusting member 34, and the adjusting through hole at the lower end of the rotating connecting sleeve 332 is smaller than the outer diameter of the rotating head of the adjusting member 34.

[0135] The diameter of the adjusting through hole is matched with the outer diameter of the screw of the adjusting component 34.

[0136] More specifically, such as Figure 9 and Figure 10 As shown, the adjusting member 34 includes a screw section, one end of which is connected to a rotating head, and the other end is connected to an adjusting head;

[0137] The limiting and locking assembly 35 includes a slider 351 and a locking rod 352. The slider 351 is slidably connected in the guide rail 321, and the locking rod 352 passes through the through hole of the support column 311 and the slot of the guide rail 321 in sequence and is threadedly connected to the slider 351.

[0138] In this invention, the adjusting head of the adjusting member 34 allows for easy tool adjustment of the adjusting member 34 to rotate, thereby driving the top structural support member 31 to move.

[0139] Furthermore, such as Figure 7 As shown, the slot group 1 includes at least two square slots that are vertically coaxially connected to the ends of the secondary lining trolley 8;

[0140] The width of the support processing rod 6 is adapted to the width of the slot;

[0141] The outer center of the slot is provided with a tightening threaded hole, and a tightening bolt 11 is connected to the threaded hole.

[0142] In this invention, the elastic pad 5 is made of elastic material; the supporting processing rod 6 is an overall elongated square columnar structure.

[0143] Furthermore, such as Figure 4 As shown, the movable pad 4 is a cuboid structure with one end open and multiple openings inside.

[0144] Among them, the movable pad 4 is made of a light-transmitting material.

[0145] In this invention, the movable pad 4 is made of a light-transmitting material. During the secondary lining concrete construction process, the location of the concrete pouring can be seen by shining a flashlight, effectively preventing misjudgment that the concrete has filled the entire space due to factors such as pump pressure, concrete properties, and pouring time. This effectively ensures that the secondary lining concrete reaches fullness during the pouring process. In this invention, as a more preferred embodiment, the side plate of the movable pad 4 is made of a light-transmitting material.

[0146] Furthermore, such as Figure 5 As shown, the waterstop 7 includes a back-adhered waterstop 71 and a centrally embedded waterstop 72. The back-adhered waterstop 71 is disposed between the elastic pad 5 and the inner wall of the initial masonry 9, and the centrally embedded waterstop 72 is disposed between the non-rotating end of the rotating template 22 and the bottom end of the bottom support baffle 322.

[0147] In summary, a more specific embodiment of this utility model is as follows:

[0148] Example 1

[0149] Before using the aforementioned design structure for tunnel secondary lining pouring, the pre-fabricated end-sealing plug device needs to be manually or using appropriate handling equipment transported to the designated construction location for installation as a backup.

[0150] During construction, the initial masonry 9, invert arch 91, invert arch filling 92, and secondary lining reinforcement 93 are completed first. After the secondary lining trolley 8 is spliced ​​and moved to the designated position, the secondary lining trolley 8 is locked.

[0151] Before use, the telescopic support structure 3 is assembled. The operator first inserts the adjusting part 34 into the rotating connecting sleeve 332, and then threads the lower end of the adjusting part 34 into the threaded through hole of the corresponding support block 324, so that the upper end of the adjusting part 34 is kept at a certain distance from the support block 324. Next, the operator locks the top structural support 31 onto the guide rail 321 of the bottom structural support 32 through the cooperation of the slider 351 and the locking rod 352. At this time, the locking rod 352 is not tightened. Then, the top support baffle 312 is moved to contact the bottom support baffle 322. Then, each rotating connecting sleeve 332 is threaded into the corresponding rotating sleeve 331, thus completing the assembly of the telescopic support structure 3.

[0152] During use, the staff adjusts the template of the secondary lining trolley 8 to a suitable position. Then, the rotating template 22 is completely installed and fixed on the rotating mounting seat 21 on the secondary lining trolley 8 using connectors. After it is fixed, the rotating template 22 is flipped over so that the template surface of the rotating template 22 is perpendicular to the secondary lining trolley 8 and parallel to the ground. The gaps and misalignments between each rotating template 22 are checked and adjusted. After adjustment, the rotating template 22 is firmly fixed, and the embedded waterstop 72 is laid on the top plate of the rotating template 22. The secondary lining steel bars 93 and the embedded waterstop 72 are fixed to the top plate of the rotating template 22 using fasteners. During construction, attention should be paid to the uniform distribution of the secondary lining steel bars 93, the steel bar spacing should meet the requirements, and the embedded waterstop 72 should be free of wrinkles and damage.

[0153] Then, the staff placed the bottom structural support 32 of the assembled telescopic support structure 3 on top of the embedded waterstop 72.

[0154] Next, the staff placed movable pads 4 on top of the top structural support 31 and checked the gaps between the movable pads 4. At the same time, they made adjustments. After the adjustments were completed, the back-attached waterstop 71 was arranged circumferentially along the initial masonry 9.

[0155] Next, the workers filled the space between the movable pad 4 and the back-adhesive waterstop 71 one by one with the elastic pad 5; then, the adjusting head of the adjusting member 34 was connected to the rotating tool and the adjusting member 34 was rotated. The adjusting member 34 spun freely in the rotating sleeve 331. The screw section of the adjusting member 34 drove the support block 324 away from the rotating sleeve 331, so that the amount of expansion and contraction between the top structural support member 31 and the bottom structural support member 32 continued to increase. When the adjusting rod 16 could not be turned, the entire plug device was also tightened. Finally, the bottom structural support member 32 and the top structural support member 31 were locked by rotating the locking rod 352 to prevent slippage between the two.

[0156] Finally, the workers used the support processing rods 6 to pass through the slot groups 1 on the secondary lining trolley 8 and extend them to the initial lining position 9. Then, they tightened the bolts 11 to fix the support processing rods 6 firmly, thus completing the installation of the secondary lining end cap plate.

[0157] In summary, during the pouring of the secondary lining concrete, a flashlight can be used to check the position of the concrete pouring through the movable pad 4 to ensure that the secondary lining concrete reaches a full state during the pouring process.

[0158] During dismantling, the workers first loosen the top bolts 11 on the slot assembly 1, pull the support processing rod 6 out of the slot assembly 1, and then turn the adjusting rod 16 to continuously reduce the amount of expansion and contraction between the top structural support 31 and the bottom structural support 32. At this time, the entire plug device is gradually relaxed, and the elastic pads 5 and movable pads 4 are removed one by one from top to bottom and from the outer ring to the inner ring. Then the expansion support structure 3 is removed. Then, the workers release the embedded waterstop 72 from the rotating template 22. At this time, the dismantling of the entire plug plate system is completed, and the secondary lining trolley 8 can be slid forward to carry out the next cycle of secondary lining concrete construction.

[0159] Before the subsequent pouring process, the operator uses a ground pump or a ground pump in conjunction with the pouring pipe 10 to pour the concrete. The secondary lining trolley has pouring holes or pouring chambers 81 on both sides and the top. This device is only used to seal both ends with templates during the first pouring of the secondary lining. In subsequent pouring, only one side is sealed, and the other side can be sealed with the already poured secondary lining as the template. After the sealing is completed, the pouring can be carried out.

[0160] During pouring, since the secondary lining concrete is poured from the side windows on both sides of the secondary lining trolley and the pouring holes or pouring chambers 8 on the top of the secondary lining trolley, the state of concrete pouring can be seen by shining a flashlight during the pouring process; finally, as time goes by, when the construction is completed and the concrete 101 has initially set to a qualified state and reached the demolding state, this utility model can be removed simply by following the construction steps.

[0161] In the above implementation process, the side windows on both sides of the secondary lining trolley are also pouring holes or pouring chambers 81.

[0162] During dismantling, the workers first loosen the top bolts 11 on the slot assembly 1, pull out the support processing rod 6 from the slot assembly 1, and remove the grid-shaped polymer material device. Then, they turn the adjusting rod 16 to continuously reduce the amount of expansion and contraction between the top structural support 31 and the bottom structural support 32. At this time, the entire plug device is gradually relaxed, and the elastic pads 5 and movable pads 4 are removed one by one from top to bottom and from the outer ring to the inner ring. Then, the expansion support structure 3 is removed. After that, the workers release the embedded waterstop 72 from the rotating template 22. At this time, the dismantling of the entire plug plate system is completed, and the secondary lining trolley 8 can be slid forward to carry out the next cycle of secondary lining concrete construction.

[0163] After all the construction work is completed, the operators only need to clean and repair the disassembled parts of this utility model together with the second village trolley 8, and then transport them to the designated tool storage warehouse for storage, so that they can be used for the next cycle of use. In specific practical applications, they can be used as needed.

[0164] Example 2

[0165] This embodiment 2 is the same as embodiment 1, except that the lower part of the bottom support baffle 322 and the top of the rotating template 22 are connected together by a snap-fit ​​structure. The snap-fit ​​structure is a combination of dovetail groove and dovetail clip, or a combination of concave and convex structures.

[0166] The upper part of the top support baffle 312 and the lower part of the movable pad 4 are connected by a snap-fit ​​structure. This snap-fit ​​structure is either a dovetail groove, a dovetail clip, or a combination of concave and convex structures.

[0167] The rotating template 22, the top structural support 31, the bottom structural support 32, and the movable pad 4 all have a certain curvature at both ends, which can improve the sealing effect after assembly.

[0168] The specific usage is the same as in Example 1, and will not be repeated here.

[0169] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A closure plug device for tunnel lining casting, comprising a waterstop (7) and a lining trolley (8), characterized in that, Also include: A plurality of card slot groups (1), a plurality of card slot groups (1) are respectively arranged in the inner periphery of the two lining trolley (8) end; A plurality of rotating template support assemblies (2), a plurality of rotating template support assemblies (2) are respectively arranged in the outer periphery of the two lining trolley (8) end, and each rotating template support assembly (2) is rotatably connected to the two lining trolley (8); Telescopic support structure (3), telescopic support structure (3) is respectively arranged above each rotating template support assembly (2), for adjusting the height, adapt to different support height; Movable cushion block (4), movable cushion block (4) is respectively arranged above each telescopic support structure (3); Elastic cushion block (5), elastic cushion block (5) is respectively arranged above each movable cushion block (4); Support processing rod (6), support processing rod (6) is respectively inserted into the corresponding card slot group (1), for limiting rotating template support assembly (2), telescopic support structure (3), movable cushion block (4) and elastic cushion block (5) outward migration.

2. The end cap device for tunnel secondary lining pouring according to claim 1, characterized in that, The rotating template support assembly (2) comprises: Rotary mounting seat (21), rotary mounting seat (21) is respectively connected in the inner periphery of the two lining trolley (8) end; Rotating template (22), one end of rotating template (22) is rotatably connected to rotary mounting seat (21) through connecting piece; Wherein, the cross section of rotating template (22) is "L" type structure.

3. The end closure device for tunnel secondary lining pouring according to claim 1, characterized in that, The telescopic support structure (3) comprises: Top structure support (31), a plurality of support columns (311) are connected to the top structure support (31); Bottom structure support (32), a plurality of guide rails (321) are arranged on the bottom structure support (32); Rotary connecting assembly (33), rotary connecting assembly (33) is respectively connected to the top of the top structure support (31); Adjusting piece (34), one end of adjusting piece (34) is rotatably connected to the rotary connecting assembly (33), and the other end is threadedly connected to the bottom structure support (32); Limiting locking assembly (35), limiting locking assembly (35) is respectively connected to the corresponding guide rail (321) through each support column (311); Wherein, one end of the top structure support (31) is clamped above the outside of the bottom structure support (32).

4. The end closure device for tunnel secondary lining pouring according to claim 3, characterized in that, The top structure support (31) comprises: A plurality of support columns (311), support columns (311) are respectively connected to the top of the top support baffle (312), and the non connecting end of each support column (311) is provided with a through hole; Top support baffle (312); Wherein, the support column (311) and the side plate of the top support baffle (312) are arranged at intervals.

5. The end closure device for tunnel secondary lining pouring according to claim 3, characterized in that, The bottom structure support (32) comprises: Guide rail (321), guide rail (321) is respectively connected to the side plate both ends and the middle part of the bottom support baffle (322); Bottom support baffle (322); A plurality of connecting plates (323), a plurality of connecting plates (323) are vertically connected inside the bottom support baffle (322); Supporting blocks (324) are connected above two connecting plates (323) at two ends respectively, and a threaded hole is vertically arranged in the middle of each supporting block (324) and matched with the adjusting member (34); The middle of the guide rail (321) is vertically provided with a slot.

6. The end closure device for tunnel secondary lining pouring according to claim 3, characterized in that, The rotating connection assembly (33) comprises: A rotating sleeve (331) is connected above the top supporting baffle (312) between two adjacent supporting columns (311), and an outer thread is arranged on the outer side of the rotating sleeve (331); A rotating connecting sleeve (332) is threadedly connected to the outer side of the rotating sleeve (331); The lower end of the rotating connecting sleeve (332) is provided with an adjusting hole matched with the adjusting member (34).

7. The end closure device for tunnel secondary lining pouring according to claim 3, characterized in that, The adjusting member (34) comprises a screw rod segment, one end of which is connected with a rotating head, and the other end is connected with an adjusting head. The limiting and locking assembly (35) comprises a sliding block (351) and a locking rod (352), the sliding block (351) is slidingly connected in the guide rail (321), and the locking rod (352) is threadedly connected with the sliding block (351) through the through hole of the supporting column (311) and the slot of the guide rail (321) in sequence.

8. The end closure device for tunnel secondary lining pouring according to claim 1, characterized in that, The clamping groove group (1) comprises at least two square clamping grooves vertically and coaxially connected at the end of the two lining trolleys (8). The width of the supporting machining rod (6) is matched with the width of the clamping groove. The middle of the outer side of the clamping groove is also provided with a clamping threaded hole, and a clamping bolt (11) is threadedly connected in the clamping threaded hole.

9. The end closure device for tunnel secondary lining pouring according to claim 1, characterized in that, The movable cushion block (4) is in the overall structure of a long rectangular body with one end open and multiple openings in the inside. The movable cushion block (4) is made of a light-transmitting material.

10. The end closure device for tunnel secondary lining pouring according to claim 1, characterized in that, The water stop belt (7) comprises a back-sticking water stop belt (71) and a middle-buried water stop belt (72), the back-sticking water stop belt (71) is arranged between the elastic cushion block (5) and the inner wall of the primary initial lining (9), and the middle-buried water stop belt (72) is arranged between the non-rotating end of the rotating formwork (22) and the bottom end of the bottom supporting baffle (322).

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