A soft rock tunnel secondary lining trolley end head formwork structure

Abstract

The utility model belongs to mould design technical field discloses a kind of soft rock tunnel secondary lining trolley end template structure. Soft rock tunnel secondary lining trolley end template structure includes mounting assembly, adjusting assembly, sealing element and limit piece, and mounting assembly includes first mounting plate and second mounting plate, first mounting plate extends along first direction, second mounting plate extends along second direction, first direction is perpendicular to second direction, and second mounting plate is connected to first mounting plate;Adjusting assembly includes adjusting plate and U-shaped plug-in element, one end of U-shaped plug-in element is plugged into second mounting plate, and the other end is plugged into adjusting plate, so that adjusting plate can rotate relative to second mounting plate;Sealing element is set at the connecting place of adjusting plate and mounting assembly;Limit piece is set between adjusting plate and second mounting plate, and the end away from first mounting plate, and limit piece can change the rotation angle of adjusting plate and support adjusting plate. The utility model can improve the stability of soft rock tunnel after secondary lining.

Description

Technical Field

[0001] This utility model relates to the field of mold design technology, and in particular to a template structure for the end of a secondary lining trolley in soft rock tunnels. Background Technology

[0002] During tunnel construction, some soft rock areas exist. Tunnel construction in these areas involves tunnels with low surrounding rock strength and poor stability, requiring enhanced support quality to ensure tunnel completion. Currently, the industry primarily employs secondary lining to improve the stability of soft rock tunnels. Secondary lining disperses surrounding rock pressure, prevents tunnel deformation, and enhances tunnel stability. The secondary lining process utilizes a secondary lining trolley, a crucial piece of equipment for pouring concrete and shaping the lining, thus determining the quality of the secondary lining construction.

[0003] However, the existing secondary lining trolleys have poor sealing performance. There are gaps between the end molds of the secondary lining trolleys and the already poured secondary lining concrete, which prevents the molds from being compacted into the concrete. This results in loose secondary lining concrete with weak support for soft rock tunnels. At the same time, the connection between the end molds and the secondary lining trolleys is poorly sealed, which can easily lead to concrete leakage, causing concrete segregation, honeycomb surface defects, and loose and falling pieces. This results in poor stability of soft rock tunnels after secondary lining and poses safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a template structure for the end of a secondary lining trolley in soft rock tunnels, so as to reduce concrete leakage and improve the stability of soft rock tunnels after secondary lining.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A formwork structure for the end of a secondary lining trolley in a soft rock tunnel, comprising:

[0007] The mounting assembly includes a first mounting plate and a second mounting plate, the first mounting plate extending along a first direction and the second mounting plate extending along a second direction, the first direction being perpendicular to the second direction, the second mounting plate being connected to one side of the first mounting plate, and the bottom side of the first mounting plate being flush with the bottom side of the second mounting plate.

[0008] The adjustment assembly includes an adjustment plate and a U-shaped connector, one end of which is inserted into the second mounting plate and the other end of which is inserted into the adjustment plate, so that the adjustment plate can rotate relative to the second mounting plate.

[0009] A seal is provided at the connection between the adjusting plate and the mounting assembly;

[0010] A limiting member is disposed between the adjusting plate and the second mounting plate, and at one end away from the first mounting plate. The limiting member can change the rotation angle of the adjusting plate and support the adjusting plate.

[0011] The above-mentioned soft rock tunnel secondary lining trolley end template structure includes an adjusting plate comprising a rotating part and an adjusting part. The rotating part is located at the bottom end of the adjusting part. The second mounting plate has a rotating groove near the top end of the first mounting plate. The rotating part is rotatably connected to the rotating groove. One end of the U-shaped connector is inserted into the rotating part.

[0012] In the aforementioned soft rock tunnel secondary lining trolley end template structure, the rotating part extends along the width direction of the adjusting plate, and the cross-section of the rotating part is semi-circular; the rotating groove extends along the width direction of the second mounting plate, and the cross-section of the rotating groove is semi-circular.

[0013] The above-mentioned soft rock tunnel secondary lining trolley end template structure includes an adjusting plate that further includes a first limiting surface, which is connected to the rotating part and the adjusting part. The bottom end of the first mounting plate is provided with a second limiting surface, which can closely abut the second limiting surface to limit the rotation angle of the adjusting plate.

[0014] In the aforementioned soft rock tunnel secondary lining trolley end template structure, the second mounting plate has a first mounting groove, the adjusting plate has a second mounting groove, one end of the U-shaped connector is fixedly connected to the first mounting groove, and the other end is rotatably connected to the second mounting groove.

[0015] In the aforementioned soft rock tunnel secondary lining trolley end template structure, the limiting component is a limiting pad block. The top and bottom surfaces of the limiting component are provided with multiple anti-slip grooves. The anti-slip grooves extend along the length direction of the limiting component, and the multiple anti-slip grooves are evenly spaced along the width direction of the limiting component.

[0016] In the aforementioned soft rock tunnel secondary lining trolley end template structure, the sealing element is a sealing strip, and the material of the sealing element is silicone or rubber.

[0017] In the aforementioned soft rock tunnel secondary lining trolley end template structure, the bottom surface of the adjusting plate is provided with a rubber pad, and the top surface of the second mounting plate is provided with a rubber pad.

[0018] In the aforementioned soft rock tunnel secondary lining trolley end template structure, the rubber gasket is bonded to the adjusting plate and / or the second mounting plate.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a secondary lining trolley end template structure for soft rock tunnels, including an adjusting plate and a U-shaped connector. The two ends of the U-shaped connector are respectively connected to the adjusting plate and a second mounting plate, ensuring the adjusting plate can rotate. During use, if there is a gap between the adjusting plate and the concrete surface of the secondary lining, the adjusting plate is adjusted to rotate towards the concrete, thus compacting the concrete, increasing its density, and consequently improving the forming quality of the soft rock tunnel. Simultaneously, a sealing element is installed at the connection between the adjusting plate and the mounting component to prevent concrete leakage, avoid concrete segregation, and prevent honeycomb-like pitting and loose, fragmented surfaces, thus improving the concrete forming quality and consequently the forming quality of the soft rock tunnel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the splicing of the end template structure of the secondary lining trolley for soft rock tunnels provided in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the end template structure of the secondary lining trolley for soft rock tunnels provided in this embodiment of the utility model;

[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a cross-sectional schematic diagram of the end template structure of the secondary lining trolley for soft rock tunnels provided in this embodiment of the utility model;

[0025] Figure 5 yes Figure 4 Enlarged diagram of point B in the middle.

[0026] In the picture:

[0027] 1. Mounting components; 11. First mounting plate; 111. Second limiting surface; 12. Second mounting plate; 121. First mounting slot;

[0028] 2. Adjustment assembly; 21. Adjustment plate; 211. Rotating part; 212. Adjustment part; 213. First limiting surface; 214. Second mounting groove; 22. U-shaped connector;

[0029] 3. Limiting components. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1-5 As shown, the end template structure of the secondary lining trolley for soft rock tunnels includes an installation assembly 1, an adjustment assembly 2, a sealing element, and a limiting element 3. The installation assembly 1 includes a first mounting plate 11 and a second mounting plate 12. The first mounting plate 11 extends along a first direction, and the second mounting plate 12 extends along a second direction. The first direction is perpendicular to the second direction. The second mounting plate 12 is connected to one side of the first mounting plate 11, and the bottom side of the first mounting plate 11 is flush with the bottom side of the second mounting plate 12. The adjustment assembly 2 includes an adjustment plate 21 and a U-shaped connector 22. One end of the U-shaped connector 22 is inserted into the second mounting plate 12, and the other end is inserted into the adjustment plate 21, allowing the adjustment plate 21 to rotate relative to the second mounting plate 12. The sealing element is located at the connection between the adjustment plate 21 and the installation assembly 1. The limiting element 3 is located between the adjustment plate 21 and the second mounting plate 12, away from the end of the first mounting plate 11. The limiting element 3 can change the rotation angle of the adjustment plate 21 and support the adjustment plate 21. The first direction is as follows: Figure 2 As shown in the X direction, the second direction is as follows: Figure 2 Shown in the Y direction.

[0035] The end template structure of the secondary lining trolley for soft rock tunnels provided by this utility model includes an adjusting plate 21 and a U-shaped connector 22. The two ends of the U-shaped connector 22 are respectively connected to the adjusting plate 21 and a second mounting plate 12, ensuring that the adjusting plate 21 can rotate. During use, if there is a gap between the adjusting plate 21 and the concrete surface of the secondary lining, the adjusting plate 21 is adjusted to rotate towards the concrete, thereby compacting the concrete, increasing its density, and thus improving the forming quality of the soft rock tunnel. Simultaneously, a sealing element is provided at the connection between the adjusting plate 21 and the mounting component 12 to prevent concrete leakage, avoid concrete segregation, and prevent honeycomb-like pitting and loose, fragmented surfaces, thus improving the forming quality of the concrete and consequently the forming quality of the soft rock tunnel.

[0036] The first mounting plate 11 and the second mounting plate 12 can be integrally formed, or they can be processed separately and then assembled and fixed. In this embodiment, the first mounting plate 11 and the second mounting plate 12 are integrally formed, which improves processing efficiency.

[0037] See Figure 4 and Figure 5 The adjusting plate 21 includes a rotating part 211 and an adjusting part 212. The rotating part 211 is located at the bottom end of the adjusting part 212. The second mounting plate 12 has a rotating groove near the top of the first mounting plate 11. The rotating part 211 can be rotatably connected in the rotating groove. One end of the U-shaped connector 22 is inserted into the rotating part 211. The two ends of the U-shaped connector 22 are respectively connected to the rotating part 211 and the second mounting plate 12, which can ensure that the adjusting plate 21 rotates around one end of the U-shaped connector 22, which facilitates the adjustment of the gap between the adjusting plate 21 and the concrete surface after the secondary lining, improves the compaction effect of the concrete, and thus improves the forming quality of the soft rock tunnel after the secondary lining.

[0038] Specifically, see Figure 4 and Figure 5 The rotating part 211 extends along the width direction of the adjusting plate 21, and the cross-section of the rotating part 211 is semi-circular. The rotating groove extends along the width direction of the second mounting plate 12, and the cross-section of the rotating groove is also semi-circular. The semi-circular arc surface contact prevents jamming caused by the shaking of the adjusting plate 21 during rotation, thus improving the smoothness of the rotation process. At the same time, it can evenly distribute the load, reduce stress concentration, and improve the service life of the U-shaped connector 22 and the adjusting plate 21.

[0039] For example, the second mounting plate 12 has a first mounting groove 121, the adjusting plate 21 has a second mounting groove 214, one end of the U-shaped connector 22 is fixedly connected to the first mounting groove 121, and the other end is rotatably connected to the second mounting groove 214, so as to ensure that the adjusting plate 21 can rotate around the U-shaped connector 22.

[0040] This embodiment does not specifically limit the shape of the first mounting groove 121 and the second mounting groove 214. Optionally, both the first mounting groove 121 and the second mounting groove 214 are circular for ease of processing. Correspondingly, the cross-sections at both ends of the U-shaped connector 22 are circular to facilitate insertion into the first mounting groove 121 and the second mounting groove 214.

[0041] Specifically, an existing bearing is installed in the second mounting groove 214. The outer ring of the bearing is interference-fitted with the second mounting groove 214, and the inner ring of the bearing is interference-fitted with one end of the U-shaped connector 22, so that the adjustment plate 21 rotates more smoothly.

[0042] In other embodiments, the first mounting groove 121 is a circular groove, the second mounting groove 214 is a rectangular groove, and the cross-section of the U-shaped connector 22 inserted into one end of the second mounting groove 214 is rectangular, so as to avoid the U-shaped connector 22 from twisting and improve the fixing effect.

[0043] To limit the rotation angle of the adjusting plate 21 and prevent it from rotating too much and scraping the concrete, see this embodiment. Figure 4 and Figure 5 The adjusting plate 21 also includes a first limiting surface 213, which is connected to the rotating part 211 and the adjusting part 212. A second limiting surface 111 is provided at the bottom end of the first mounting plate 11. The first limiting surface 213 can closely abut against the second limiting surface 111 to limit the rotation angle of the adjusting plate 21. During the process of the adjusting plate 21 turning towards the concrete, the first limiting surface 213 abuts against the second limiting surface 111, preventing the adjusting plate 21 from continuing to rotate, thus enabling the adjusting plate 21 to compact the concrete and improve the concrete's molding quality. It also prevents the adjusting plate 21 from rotating too much, scraping the concrete, and reducing the concrete's molding quality.

[0044] For example, the limiting member 3 is a limiting pad. Multiple anti-slip grooves are provided on both the top and bottom surfaces of the limiting member 3. The anti-slip grooves extend along the length of the limiting member 3, and are evenly spaced along the width of the limiting member 3. Moving the limiting member 3 towards the first mounting plate 11 allows the adjusting plate 21 to rotate towards the concrete surface of the secondary lining. Moving the limiting member 3 away from the first mounting plate 11 allows the adjusting plate 21 to rotate away from the concrete surface of the secondary lining. Simultaneously, the anti-slip grooves increase friction, preventing concrete pressure on the adjusting plate 21 from causing the limiting member 3 to retract, thus improving the compaction effect of the adjusting plate 21 on the concrete.

[0045] In other embodiments, the limiting member 3 is a jack. The extension of the jack can cause the adjusting plate 21 to rotate toward the concrete surface closer to the secondary lining, and the retraction of the jack can cause the adjusting plate 21 to rotate toward the concrete surface farther away from the secondary lining.

[0046] Furthermore, the bottom surface of the adjusting plate 21 is provided with a rubber pad, and the top surface of the second mounting plate 12 is provided with a rubber pad, which can further increase the friction between the limiting member 3 and the adjusting plate 21 and improve the compaction effect on the concrete.

[0047] Specifically, the rubber gasket is bonded to the adjusting plate 21 and / or the second mounting plate 12, and the bonding is convenient.

[0048] In other embodiments, the rubber gasket may also be fixed to the adjusting plate 21 and / or the second mounting plate 12 by rivets.

[0049] The sealing element is used to improve the sealing effect at the connection between the adjusting plate 21, the first mounting plate 11, and the second mounting plate 12. Optionally, the sealing element is a sealing strip, and the material of the sealing element is silicone or rubber. Silicone or rubber has high elasticity and can actively fill the gap at the connection between the adjusting plate 21, the first mounting plate 11, and the second mounting plate 12 to improve the sealing effect. At the same time, the pressure of the concrete can further compress and fit the sealing element, preventing leakage from the gap at the connection between the adjusting plate 21, the first mounting plate 11, and the second mounting plate 12.

[0050] Specifically, the sealing element is set in the rotating groove and extends along the width direction of the second mounting plate 12 to further improve the sealing effect, prevent concrete leakage and segregation, improve the quality of concrete, and thus improve the molding quality of concrete and ensure the stability of soft rock tunnels.

[0051] The end template structure of the secondary lining trolley for soft rock tunnels provided by this utility model involves placing the rotating part 211 of the adjusting plate 21 into the rotating groove of the second mounting plate 12, inserting both ends of the U-shaped connector 22 into the first mounting groove 121 and the second mounting groove 214 respectively, and then placing the sealing element in the rotating groove. Multiple mounting assemblies 1, each equipped with an adjusting plate 21 and a sealing element, are fixedly connected to the end of the secondary lining trolley and arranged along an arch. The distance of the limiting element 3 is adjusted so that the distance between the adjusting plate 21 and the tunnel lining surface is equal to the thickness of the concrete layer to be poured. Afterwards, concrete is poured, and the adjusting plate 21 compacts the concrete, improving the forming quality of the secondary lining concrete and thus enhancing the stability of the soft rock tunnel.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A template structure for the end of a secondary lining trolley in a soft rock tunnel, characterized in that, include: Mounting assembly (1) includes a first mounting plate (11) and a second mounting plate (12). The first mounting plate (11) extends along a first direction, and the second mounting plate (12) extends along a second direction. The first direction is perpendicular to the second direction. The second mounting plate (12) is connected to one side of the first mounting plate (11), and the bottom side of the first mounting plate (11) is flush with the bottom side of the second mounting plate (12). The adjustment assembly (2) includes an adjustment plate (21) and a U-shaped connector (22), one end of which is inserted into the second mounting plate (12) and the other end is inserted into the adjustment plate (21) so that the adjustment plate (21) can rotate relative to the second mounting plate (12); A sealing element is disposed at the connection between the adjusting plate (21) and the mounting assembly (1); The limiting member (3) is disposed between the adjusting plate (21) and the second mounting plate (12) and at one end away from the first mounting plate (11). The limiting member (3) can change the rotation angle of the adjusting plate (21) and support the adjusting plate (21).

2. The end template structure for the secondary lining trolley of a soft rock tunnel according to claim 1, characterized in that, The adjusting plate (21) includes a rotating part (211) and an adjusting part (212). The rotating part (211) is located at the bottom end of the adjusting part (212). The second mounting plate (12) has a rotating groove near the top end of the first mounting plate (11). The rotating part (211) can be rotatably connected in the rotating groove. One end of the U-shaped connector (22) is inserted into the rotating part (211).

3. The end template structure for the secondary lining trolley of a soft rock tunnel according to claim 2, characterized in that, The rotating part (211) extends along the width direction of the adjusting plate (21), and the cross-section of the rotating part (211) is semi-circular. The rotating groove extends along the width direction of the second mounting plate (12), and the cross-section of the rotating groove is semi-circular.

4. The end template structure for the secondary lining trolley of a soft rock tunnel according to claim 2, characterized in that, The adjusting plate (21) further includes a first limiting surface (213), which is connected to the rotating part (211) and the adjusting part (212). The bottom end of the first mounting plate (11) is provided with a second limiting surface (111), and the first limiting surface (213) can closely abut against the second limiting surface (111) to limit the rotation angle of the adjusting plate (21).

5. The end template structure for the secondary lining trolley of a soft rock tunnel according to claim 1, characterized in that, The second mounting plate (12) has a first mounting groove (121), the adjustment plate (21) has a second mounting groove (214), one end of the U-shaped connector (22) is fixedly connected to the first mounting groove (121), and the other end is rotatably connected to the second mounting groove (214).

6. The end template structure for the secondary lining trolley of a soft rock tunnel according to claim 1, characterized in that, The limiting member (3) is a limiting pad. Multiple anti-slip grooves are provided on the top and bottom surfaces of the limiting member (3). The anti-slip grooves extend along the length direction of the limiting member (3), and the multiple anti-slip grooves are evenly spaced along the width direction of the limiting member (3).

7. The end formwork structure for the secondary lining trolley of a soft rock tunnel according to any one of claims 1-6, characterized in that, The sealing element is a sealing strip, and the material of the sealing element is silicone or rubber.

8. The end formwork structure for the secondary lining trolley of a soft rock tunnel according to any one of claims 1-6, characterized in that, The bottom surface of the adjustment plate (21) is provided with a rubber pad, and the top surface of the second mounting plate (12) is provided with a rubber pad.

9. The end template structure for the secondary lining trolley of a soft rock tunnel according to claim 8, characterized in that, The rubber gasket is bonded to the adjusting plate (21) and / or the second mounting plate (12).

Images