A shield segment impermeability test device

Abstract

The utility model relates to shield segment technical field and disclose a kind of shield segment impermeability test device, including bottom plate, the edge of the upper surface of bottom plate is fixedly connected with two symmetrical fixed blocks, one side of two fixed blocks is fixedly connected with fixed disc, the one side of fixed disc is equipped with connecting frame, rotating shaft is rotatably connected with the one side of fixed block of fixed disc by bearing, and the one end of rotating shaft is fixed with connecting frame by passing through fixed disc, the outside of rotating shaft is connected with gear by key. The utility model drives shield segment test piece to rotate to the angle of need testing by connecting frame, to simulate the actual working condition of shield segment in tunnel vault, arch waist, arch bottom and other positions, also by being equipped with detection component, shield segment is detected to avoid the error that may be produced by relying on the hand feeling or naked eye observation of test personnel.

Description

Technical Field

[0001] This utility model relates to the field of shield tunnel segment technology, and more specifically to a test device for the anti-seepage performance of shield tunnel segments. Background Technology

[0002] In the field of tunnel engineering, shield tunnel segments are an important component of tunnel construction. Their impermeability directly affects the safety and durability of the tunnel. Therefore, it is necessary to conduct impermeability tests on them to ensure quality.

[0003] A search revealed Chinese patent CN220819333U, which discloses a segment permeability testing device, specifically including a support platform, a bracket, and a pressing drive assembly. This segment permeability testing device can solve the problem that the disassembly and assembly of the pressing block in the current segment permeability quality inspection tooling is extremely cumbersome and inconvenient.

[0004] However, the following drawbacks still exist. Traditional testing methods usually place the shield tunnel segment specimen horizontally on a fixed platform for testing. This single posture cannot fully reflect the actual working state of the shield tunnel segment in actual tunnel engineering, such as the different seepage conditions at the arch crown, arch waist, and arch bottom, which affects the accuracy and reliability of the test. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a shield tunnel segment seepage resistance test device to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a shield tunnel segment seepage resistance test device, including a base plate, two symmetrical fixing blocks are fixedly connected to the edge of the upper surface of the base plate, a fixing plate is fixedly connected to one side of the two fixing blocks, a connecting frame is provided on one side of the fixing plate, a rotating shaft is rotatably connected to the fixing plate on one side of the fixing block via a bearing, and one end of the rotating shaft passes through the fixing plate and is fixed to the connecting frame, a gear is connected to the outside of the rotating shaft via a key, a rack meshing with the gear is provided on one side of the fixing plate, and a second hydraulic cylinder is fixedly connected to the bottom of the base plate, and the piston end of the second hydraulic cylinder passes through the base plate and is fixed to the rack; The top inner wall of the connecting frame is provided with a clamping assembly for fixing the shield tunnel segments; A carrier plate is fixedly connected to one side of the connecting frame, and a water storage tank is provided on the upper surface of the carrier plate. One side of the carrier plate is provided with a flow guiding component for injecting water into the water storage tank.

[0007] As a further embodiment of this utility model, the clamping assembly includes a pressure plate disposed on the inner wall of the top of the connecting frame, and the pressure plate corresponds to the carrier plate. A first hydraulic cylinder is fixedly connected to the outer wall of the top of the connecting frame, and the piston end of the first hydraulic cylinder passes through the connecting frame and is fixed to the pressure plate. The lower surface of the pressure plate is provided with a detection component for water seepage of the shield tunnel segments.

[0008] As a further embodiment of this utility model, the flow guiding component includes a water outlet pipe fixedly connected to one side of the carrier plate, and the water outlet pipe is connected to a water storage tank opened on the carrier plate. The water outlet pipe is an L-shaped pipe, and the other end of the water outlet pipe is provided with a water inlet pipe. One end of the water inlet pipe passes through a rotating shaft, and the water inlet pipe and the water outlet pipe are connected through a rotary joint, and the rotary joint is concentric with the rotating shaft.

[0009] As a further embodiment of this utility model, the detection component includes a groove formed on the lower surface of the pressure plate and located in the middle position, and an infrared thermal imager is fixedly connected to the lower surface of the pressure plate and located in the groove.

[0010] As a further embodiment of this utility model, the fixed plate is provided with a sliding groove on one side of the connecting frame, and the sliding groove is concentric with the rotating shaft. Two symmetrical sliders that are slidably connected to the sliding groove are fixedly connected to one side of the connecting frame.

[0011] As a further embodiment of this utility model, two symmetrical limiting blocks are fixedly connected to both sides of the carrier plate.

[0012] As a further embodiment of this utility model, a slide rail is fixedly connected to one side of the fixed disk, and the slide rail is slidably connected to the rack.

[0013] As a further embodiment of this utility model, a sealing ring is fixedly connected to the side of the carrier plate that contacts the shield tunnel segment, and an arc surface is formed on the upper surface of the carrier plate and the lower surface of the pressure plate, the arc surface being adapted to the arc surface of the shield tunnel segment.

[0014] The technical effects and advantages of this utility model are as follows: 1. This utility model uses a connecting frame to rotate the shield tunnel segment specimen to the angle to be tested, thereby simulating the actual working state of the shield tunnel segment at the tunnel arch, arch waist, arch bottom and other positions, thus more comprehensively reflecting its real working state in actual tunnel engineering.

[0015] 2. This utility model uses a detection component to detect water seepage in tunnel segments, avoiding errors that may occur if the test personnel rely on their sense of touch or visual observation.

[0016] 3. This utility model, by providing a sliding groove and a slider, enables the connecting frame to rotate stably around the rotating axis, avoiding positional deviation and wobbling, thereby improving the stability of the entire structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front three-dimensional structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the rear three-dimensional structure of this utility model.

[0019] Figure 3 For the present utility model Figure 1 A partial cross-sectional structural diagram.

[0020] Figure 4 This is an enlarged schematic diagram of the pressure plate structure of this utility model.

[0021] Figure 5 This utility model Figure 1 A schematic diagram of the explosion structure.

[0022] The attached figures are labeled as follows: 1. Connecting frame; 2. First hydraulic cylinder; 3. Pressure plate; 4. Carrier plate; 5. Limiting block; 6. Base plate; 7. Fixing plate; 8. Rack; 9. Gear; 10. Rotating shaft; 11. Fixing block; 12. Second hydraulic cylinder; 13. Slide rail; 14. Water outlet pipe; 15. Infrared thermal imager; 16. Groove; 17. Water inlet pipe; 18. Rotary joint; 19. Slider; 20. Slide groove; 21. Water storage tank. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-5This utility model provides a test device for the anti-seepage performance of tunnel lining segments, including a base plate 6. Two symmetrical fixing blocks 11 are welded to the edge of the upper surface of the base plate 6. A fixing plate 7 is welded to one side of the two fixing blocks 11. A connecting frame 1 is provided on one side of the fixing plate 7. The fixing plate 7 is located on one side of the fixing blocks 11 and is rotatably connected to a rotating shaft 10 via a bearing. One end of the rotating shaft 10 passes through the fixing plate 7 and is fixed to the connecting frame 1. A gear 9 is connected to the outside of the rotating shaft 10 via a key. A rack 8 that meshes with the gear 9 is provided on one side of the fixing plate 7. A second hydraulic cylinder 12 is installed at the bottom of the base plate 6, and the piston end of the second hydraulic cylinder 12 passes through the base plate 6 and is fixed to the rack 8. A clamping assembly for fixing the tunnel lining segments is provided on the top inner wall of the connecting frame 1. The clamping assembly includes a pressure plate 3 set on the top inner wall of the connecting frame 1, and the pressure plate 3 corresponds to the carrier plate 4. A first hydraulic cylinder 2 is installed on the top outer wall of the connecting frame 1, and the piston end of the first hydraulic cylinder 2 passes through the... The connecting frame 1 is fixed to the pressure plate 3. A carrier plate 4 is welded to one side of the connecting frame 1. A water storage tank 21 is opened on the upper surface of the carrier plate 4. A water guide component for injecting water into the water storage tank 21 is provided on one side of the carrier plate 4. The shield tunnel segment specimen is hoisted to the top of the carrier plate 4 using a gantry crane. Then, the first hydraulic cylinder 2 is activated. The piston end of the first hydraulic cylinder 2 moves downward, which drives the pressure plate 3 to move downward until the pressure plate 3 presses the shield tunnel segment tightly onto the carrier plate 4, thus fixing the shield tunnel segment. Then, the second hydraulic cylinder 12 is activated. The piston end of the second hydraulic cylinder 12 moves downward, which drives the rack 8 to move downward. At the same time, the rack 8 drives the gear 9 to rotate, which in turn drives the rotating shaft 10 to rotate. The rotating shaft 10 then drives the connecting frame 1 to rotate. The connecting frame 1 drives the shield tunnel segment specimen to rotate to the angle to be tested. This allows the different permeability conditions at the arch crown, arch waist, and arch bottom to be simulated according to requirements, solving the problem of not being able to fully reflect the real working state of the shield tunnel segment in actual tunnel engineering.

[0025] In this embodiment, the flow guiding component includes a water outlet pipe 14 welded to one side of the carrier plate 4, and the water outlet pipe 14 is connected to a water storage tank 21 opened on the carrier plate 4. The water outlet pipe 14 is an L-shaped pipe, and the other end of the water outlet pipe 14 is provided with a water inlet pipe 17. One end of the water inlet pipe 17 passes through the rotating shaft 10. The water inlet pipe 17 and the water outlet pipe 14 are connected through a rotary joint 18, and the rotary joint 18 is concentric with the rotating shaft 10. The other end of the water inlet pipe 17 is connected to a high-pressure water source. When it is necessary to simulate water seepage, the high-pressure water source is turned on, and water flows into the rotary joint 18 through the water inlet pipe 17. The water then flows into the water storage tank 21 on the carrier plate 4 from the water outlet pipe 14, thereby making one side of the shield tunnel segment in a water environment to simulate the water seepage situation that may be encountered in actual use.

[0026] In this embodiment, the lower surface of the pressure plate 3 is provided with a detection component for water seepage of the tunnel lining segments. The detection component includes a groove 16 located in the middle of the lower surface of the pressure plate 3. An infrared thermal imager 15 is installed on the lower surface of the pressure plate 3 within the groove 16. When the infrared thermal imager 15 is activated, when water seepage occurs in the tunnel lining segments, the temperature of the seepage area will change due to the temperature difference between the water and the segment itself. The infrared thermal imager 15 can sensitively capture these temperature changes and convert them into a visible thermal imaging image, which is then transmitted to an external device. After receiving the thermal imaging image, the test personnel can observe the temperature distribution in different areas of the image, thus solving the error caused by the test personnel touching or observing the seepage with their naked eyes, and greatly saving manpower.

[0027] It should be noted that the infrared thermal imager 15 is existing technology, and the model of the infrared thermal imager 15 is FLIRA315. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0028] In this embodiment, the fixed plate 7 is provided with a sliding groove 20 on one side of the connecting frame 1, and the sliding groove 20 is concentric with the rotating shaft 10. Two symmetrical sliders 19 are fixed to one side of the connecting frame 1 by bolts and are slidably connected to the sliding groove 20. When the rotating shaft 10 rotates, the sliders 19 will slide around the sliding groove 20 in a circle, so that the connecting frame 1 can rotate stably around the rotating shaft 10 without deviation or shaking.

[0029] In this embodiment, two symmetrical limiting blocks 5 are fixed to both sides of the carrier plate 4 by bolts. The limiting blocks 5 can be used to position the shield tunnel segments and prevent the shield tunnel segments from being placed off-center. During the test, the shield tunnel segments are placed on the carrier plate 4, and the limiting blocks 5 can effectively prevent the shield tunnel segments from being displaced horizontally on the carrier plate 4.

[0030] In this embodiment, a slide rail 13 is fixed to one side of the fixed plate 7 by bolts, and the slide rail 13 is slidably connected to the rack 8. The slide rail 13 can accurately guide the rack 8 to ensure that the rack 8 will not deviate or jam during movement.

[0031] In this embodiment, a sealing ring is bonded to the side of the carrier plate 4 that contacts the shield tunnel segment. The upper surface of the carrier plate 4 and the lower surface of the pressure plate 3 are both provided with arc surfaces, which are adapted to the arc surfaces of the shield tunnel segment. The sealing ring can effectively prevent liquid from leaking from the contact surface during the test.

[0032] It should be noted that the rotary joint, the first hydraulic cylinder 2 and the second hydraulic cylinder 12 are all existing technologies, and those skilled in the art can set them according to actual needs, which will not be elaborated here.

[0033] The use of this utility model involves the following steps: S1: First, use the gantry crane to lift the shield tunnel segment specimen to the top of the carrier plate 4. Then, start the first hydraulic cylinder 2. The piston end of the first hydraulic cylinder 2 moves downward, which drives the pressure plate 3 to move downward until the pressure plate 3 presses the shield tunnel segment tightly onto the carrier plate 4 and forms a squeezing state to fix the shield tunnel segment. S2: Then start the second hydraulic cylinder 12. The piston end of the second hydraulic cylinder 12 moves downward, which drives the rack 8 to move downward. At the same time, the rack 8 drives the gear 9 to rotate, which in turn drives the rotating shaft 10 to rotate. The rotating shaft 10 then drives the connecting frame 1 to rotate. The connecting frame 1 drives the shield tunnel segment test piece to rotate to the angle that needs to be tested. S3: Next, the other end of the inlet pipe 17 is connected to a high-pressure water source. When the high-pressure water source is turned on, water flows into the rotary joint 18 through the inlet pipe 17. Then, the water flows into the water storage tank 21 on the carrier plate 4 from the outlet pipe 14, so that one side of the shield tunnel segment is in a water environment, simulating the water seepage situation that may be faced in actual use. S4: Simultaneously activate the infrared thermal imager 15 to monitor the water seepage in real time.

[0034] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A test device for the impermeability of tunnel lining segments, comprising a base plate (6), wherein two symmetrical fixing blocks (11) are fixedly connected to the edge of the upper surface of the base plate (6), and a fixing plate (7) is fixedly connected to one side of the two fixing blocks (11), characterized in that: A connecting frame (1) is provided on one side of the fixed plate (7). The fixed plate (7) is located on one side of the fixed block (11) and is rotatably connected to a rotating shaft (10) via a bearing. One end of the rotating shaft (10) passes through the fixed plate (7) and is fixed to the connecting frame (1). A gear (9) is connected to the outside of the rotating shaft (10) via a key. A rack (8) that meshes with the gear (9) is provided on one side of the fixed plate (7). A second hydraulic cylinder (12) is fixedly connected to the bottom of the base plate (6). The piston end of the second hydraulic cylinder (12) passes through the base plate (6) and is fixed to the rack (8). The top inner wall of the connecting frame (1) is provided with a clamping assembly for fixing the shield tunnel segments; A carrier plate (4) is fixedly connected to one side of the connecting frame (1), and a water storage tank (21) is provided on the upper surface of the carrier plate (4). The carrier plate (4) is provided with a flow guide component for injecting water into the water storage tank (21) on one side.

2. The shield tunnel segment impermeability testing device according to claim 1, characterized in that: The clamping assembly includes a pressure plate (3) set on the inner wall of the top of the connecting frame (1), and the pressure plate (3) corresponds to the carrier plate (4). A first hydraulic cylinder (2) is fixedly connected to the outer wall of the top of the connecting frame (1), and the piston end of the first hydraulic cylinder (2) passes through the connecting frame (1) and is fixed to the pressure plate (3). The lower surface of the pressure plate (3) is provided with a detection assembly for water seepage of the shield tunnel segments.

3. The shield tunnel segment impermeability testing device according to claim 1, characterized in that: The flow guiding component includes a water outlet pipe (14) fixedly connected to one side of the carrier plate (4), and the water outlet pipe (14) is connected to a water storage tank (21) opened on the carrier plate (4). The water outlet pipe (14) is an L-shaped pipe. The other end of the water outlet pipe (14) is provided with a water inlet pipe (17), and one end of the water inlet pipe (17) passes through the rotating shaft (10). The water inlet pipe (17) and the water outlet pipe (14) are connected through a rotary joint (18), and the rotary joint (18) is concentric with the rotating shaft (10).

4. The shield tunnel segment impermeability testing device according to claim 2, characterized in that: The detection component includes a groove (16) formed on the lower surface of the pressure plate (3) and located in the middle position. An infrared thermal imager (15) is fixedly connected to the lower surface of the pressure plate (3) and located in the groove (16).

5. The shield tunnel segment impermeability testing device according to claim 1, characterized in that: The fixed plate (7) is provided with a sliding groove (20) on one side of the connecting frame (1), and the sliding groove (20) is concentric with the rotating shaft (10). Two symmetrical sliders (19) are fixedly connected to one side of the connecting frame (1) and are slidably connected to the sliding groove (20).

6. The shield tunnel segment impermeability testing device according to claim 4, characterized in that: Two symmetrical limiting blocks (5) are fixedly connected to both sides of the carrier plate (4).

7. The shield tunnel segment impermeability testing device according to claim 1, characterized in that: The fixed plate (7) is fixedly connected to a slide rail (13) on one side, and the slide rail (13) is slidably connected to the rack (8).

8. The shield tunnel segment impermeability testing device according to claim 1, characterized in that: A sealing ring is fixedly connected to the side of the carrier plate (4) that contacts the shield tunnel segment. The upper surface of the carrier plate (4) and the lower surface of the pressure plate (3) are both provided with arc surfaces, which are adapted to the arc surfaces of the shield tunnel segments.

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