A shield tail monitoring device for a shield machine

Abstract

The utility model discloses a shield tail monitoring devices of shield machine, including monitor, the monitor electrically connected with laser displacement sensor, laser displacement sensor is connected with support seat, laser displacement sensor and support seat detachably link to each other, the support seat top is equipped with drive cylinder, the drive cylinder top end is installed with pressure block, pressure block and drive cylinder detachably connected, pressure block is driven to the deformation position pressure through drive cylinder when shield tail deformation, the utility model discloses a support seat cooperation drive cylinder can be to the position of shield tail easy deformation and carry out the top pressure, the shield tail is convenient to the top pressure processing of shield tail place when deformation, and the side of support seat is equipped with laser displacement sensor, and laser displacement sensor is handled to the position of shield tail easy deformation, and laser displacement sensor cooperation monitor uses, can real -time transmission of the data of monitoring gives monitor, and convenient staff observes data through monitor.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine technology, specifically to a tunnel boring machine tail monitoring device. Background Technology

[0002] As a key piece of equipment in tunnel engineering, the shield tail structure of a tunnel boring machine (TBM) is one of the core components ensuring the safety and efficiency of tunnel construction. Located at the rear of the TBM, the shield tail's main function is to seal the annular gap between the tunnel lining segments and the TBM body, preventing water and soil pressure, grouting materials, and groundwater from seeping into the TBM. It also provides working space for segment assembly. The performance and stability of the shield tail directly affect the quality of tunnel construction. Problems such as seal failure, excessive wear, or structural deformation can lead to serious accidents such as segment leakage, tunnel settlement, and face instability, not only causing construction interruptions but also significantly increasing maintenance costs and the risk of project delays.

[0003] The existing utility model patent with publication number CN218885327U discloses a shield tail performance monitoring and emergency device for a tunnel boring machine. A sealing cavity is formed between two adjacent annular sealing brushes. The sealing cavity is filled with grease for sealing. An annular airtight rubber ring is also provided in the sealing cavity. The airtight rubber ring is fixed around the inner wall of the shield tail at the position between two adjacent annular sealing brushes. The airtight rubber ring has an annular hollow inner cavity. Several pressure sensors are evenly distributed on the airtight rubber ring along its annular direction. The pressure sensors are set inside or outside the hollow inner cavity of the airtight rubber ring and are evenly distributed along the annular direction of the airtight rubber ring. They are connected to a monitoring and control unit set outside the sealing cavity. An air inlet is provided on the airtight rubber ring.

[0004] The aforementioned patent provides a shield tail performance monitoring and emergency device that can monitor the sealing status of the sealing cavity in real time. The airtight rubber ring can also be inflated and expanded in the event of leakage, acting as a sealing strip to prevent leakage at the shield tail. However, in reality, the shield tail of a tunnel boring machine (TBM) needs to withstand strong earth pressure, especially the top of the shield tail, which is the area under the greatest earth pressure and is highly susceptible to structural deformation. Existing monitoring and emergency devices cannot monitor the deformation at the shield tail, resulting in abnormal deformation not being detected in time, thus affecting the safe operation of the TBM. Utility Model Content

[0005] The purpose of this utility model is to provide a shield tail monitoring device for tunnel boring machines (TBMs), which aims to improve the problem that existing shield tail monitoring devices cannot monitor the deformation at the shield tail of the TBM, resulting in abnormal deformation at the shield tail not being detected in time, thus affecting the safe operation of the TBM.

[0006] This utility model is implemented as follows:

[0007] A shield tail monitoring device for a tunnel boring machine includes a monitoring instrument, which is electrically connected to a laser displacement sensor. The laser displacement sensor is connected to a support base, and the laser displacement sensor and the support base are detachably connected. A drive cylinder is provided on the top of the support base, and a pressure block is installed on the top of the drive cylinder. The pressure block is detachably connected to the drive cylinder. When the shield tail deforms, the pressure block applies pressure to the deformed position through the drive cylinder.

[0008] Preferably, the monitor has a display screen on its upper surface, a control panel below the display screen, and feet at the corners of its bottom surface.

[0009] Preferably, the monitor has a wire on one side of its back, a power connector at one end of the wire, and a connection slot on the back of the monitor.

[0010] Preferably, the laser displacement sensor has an adapter at the top, which is threadedly connected to the support base; the laser displacement sensor has a connecting line at the bottom, and a connecting plug at the end of the connecting line, which is connected to the connecting slot.

[0011] Preferably, the bottom of the support base is provided with a fixing plate, the edge of the fixing plate is provided with multiple fixing holes, the two sides of the support base are symmetrically provided with openings, the top of the support base is provided with a through hole, and the top of the support base is provided with a limiting sleeve around the through hole.

[0012] Preferably, the support base has a mounting joint on the top side, and the mounting joint has a mounting hole in the middle, which is threadedly connected to the adapter.

[0013] Preferably, the bottom end of the drive cylinder is provided with a stud, and one end of the stud passing through the support seat is provided with a pressure cap; the output end of the drive cylinder is provided with a telescopic rod, the top end of the telescopic rod is provided with a support joint, and the middle part of the support joint is provided with a threaded groove.

[0014] Preferably, the bottom end of the pressure block is provided with a hexagon, and the center of the bottom surface of the hexagon is provided with a threaded joint, which is connected to a threaded groove.

[0015] Preferably, it also includes a buckle, and the bottom of the back of the monitor is provided with a slot, the cross-section of the slot is T-shaped, and the buckle is engaged inside the slot.

[0016] Preferably, an arc-shaped locking plate is connected to the rear opening of the buckle, and ear plates are provided at both ends of the arc-shaped locking plate and the buckle. The arc-shaped locking plate and the ear plates at both ends of the buckle are connected by connecting bolts. The buckle has locking feet facing the monitoring instrument, and the locking feet are engaged in the slot. A positioning plate is provided below the locking feet, and multiple positioning bolts are provided on the positioning plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model can press down on the easily deformable parts of the shield tail by setting a support base in conjunction with a drive cylinder, which is convenient for pressing down on the shield tail when it deforms; at the same time, a laser displacement sensor is set on one side of the support base, which is aligned with the easily deformable parts of the shield tail for processing; the laser displacement sensor is used in conjunction with a monitoring instrument to transmit the monitored data to the monitoring instrument in real time, which is convenient for the staff to observe the data through the monitoring instrument, and also convenient for controlling the operation of the entire device through the monitoring instrument.

[0019] 2. This utility model connects to the monitoring instrument by setting a buckle. The monitoring instrument can be fixed at the tail of the shield machine by the buckle, which makes it convenient for the staff to operate the entire monitoring device, and thus facilitates the use of the entire monitoring device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the monitoring instrument of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the laser displacement sensor of this utility model;

[0023] Figure 4 This is a structural schematic diagram of the support base of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the drive cylinder of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the pressure block of this utility model;

[0026] Figure 7 This is a schematic diagram of the buckle structure of this utility model.

[0027] In the diagram: 1. Monitor; 11. Control panel; 12. Display screen; 13. Support leg; 14. Wire; 15. Power connector; 16. Slot; 17. Connecting slot; 2. Laser displacement sensor; 21. Adapter; 22. Connecting cable; 23. Connecting plug; 3. Support base; 31. Fixing plate; 32. Fixing hole; 33. Mounting connector; 34. Mounting hole; 35. Opening; 36. Through hole; 37. Limiting sleeve; 4. Drive cylinder; 41. Stud; 42. Pressure cap; 43. Telescopic rod; 44. Support connector; 45. Threaded groove; 5. Pressure block; 51. Hexagon; 52. Threaded connector; 6. Buckle; 61. Arc-shaped clamping plate; 62. Ear plate; 63. Connecting bolt; 64. Clamping foot; 65. Positioning plate; 66. Positioning bolt. Detailed Implementation

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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.

[0029] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0030] Example 1

[0031] like Figure 1 As shown, a shield tail monitoring device for a tunnel boring machine (TBM) includes a monitoring instrument 1, which is electrically connected to a laser displacement sensor 2. The monitoring instrument 1, in conjunction with the laser displacement sensor 2, is used to monitor the shield tail deformation in real time, facilitating timely handling when deformation occurs. The laser displacement sensor 2 is connected to a support base 3, and the laser displacement sensor 2 and the support base 3 are detachably connected. A drive cylinder 4 is located on the top of the support base 3, which can be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder. The support base 3 supports the drive cylinder 4 and the laser displacement sensor 2, facilitating its fixation on the bracket at the shield tail of the TBM. This ensures stable support of the drive cylinder 3 and the laser displacement sensor 2, allowing the laser displacement sensor 2 to reliably monitor shield tail deformation. The drive cylinder 4 applies pressure to the deformed location when shield tail deformation occurs. A pressure block 5 is mounted on the top of the drive cylinder 4, and the pressure block 5 is detachably connected to the drive cylinder 4. When the shield tail deforms, the pressure block 5 applies pressure to the deformed location through the drive cylinder 4.

[0032] like Figure 2 As shown, the monitor 1 has a display screen 12 on its upper surface. The display screen 12 is for convenient display of monitoring data, and the monitor 1 can be connected to the control system of the tunnel boring machine (TBM) to facilitate feedback to the TBM control system when abnormal monitoring results occur, allowing staff to handle the situation promptly. Below the display screen 12, the monitor 1 has a control panel 11 for convenient operation of the monitor. Support feet 13 are located at the corners of the bottom of the monitor 1 to ensure stability. A wire 14 is located on one side of the back of the monitor 1, with a power connector 15 at one end. The wire 14 and the power connector 15 facilitate powering the monitor 1 for easy operation. A connection slot 17 is located on the back of the monitor 1 for electrical connection between the laser displacement sensor 2 and the monitor 1.

[0033] like Figure 3 As shown, the laser displacement sensor 2 has an adapter 21 on its top, which is threadedly connected to the support base 3; this facilitates stable installation and use of the laser displacement sensor 2. The bottom of the laser displacement sensor 2 has a connecting wire 22, and the end of the connecting wire 22 has a connecting plug 23, which is connected to the connecting slot 17; this structure facilitates the use of the laser displacement sensor 2 in conjunction with the monitoring instrument 1.

[0034] like Figure 4 As shown, the support base 3 has a fixing plate 31 at its bottom end, and the fixing plate 31 has multiple fixing holes 32 on its edge. The support base 3, in conjunction with the fixing plate 31 and fixing holes 32, facilitates the fixing of the support base 3 with bolts. The support base 3 has symmetrical openings 35 on both sides, which facilitate the disassembly and assembly of the drive cylinder 4, making it easy for operators to operate. The top of the support base 3 has a through hole 36, which allows the drive cylinder 4 to pass through the support base 3. A limiting sleeve 37 is provided around the through hole 36 at the top of the support base 3, which limits and fixes the bottom of the drive cylinder 4. The top side of the support base 3 has a mounting connector 33, and the mounting connector 33 has a mounting hole 34 in its center. The mounting hole 34 is threadedly connected to the adapter 21, facilitating the stable installation and use of the laser displacement sensor 2.

[0035] like Figure 5 As shown, the bottom end of the drive cylinder 4 is provided with a stud 41, and one end of the stud 41 that passes through the support base 3 is provided with a pressure cap 42; the pressure cap 42 is pressed tightly onto the support base 3, thereby achieving stable installation of the drive cylinder 4. The output end of the drive cylinder 4 is provided with a telescopic rod 43, which facilitates the up and down movement of the pressure block 5. The top end of the telescopic rod 43 is provided with a support joint 44, and the middle of the support joint 44 is provided with a threaded groove 45.

[0036] like Figure 6 As shown, the bottom of the pressure block 5 is provided with a hexagonal body 51, which facilitates the screwing of the pressure block 5 and makes it easy to use. The bottom surface of the hexagonal body 51 is provided with a threaded connector 52, which is connected to the threaded groove 45, making it easy to disassemble and use the pressure block 5.

[0037] Example 2

[0038] like Figure 1As shown, a shield tail monitoring device for a tunnel boring machine (TBM) includes a monitoring instrument 1, which is electrically connected to a laser displacement sensor 2. The monitoring instrument 1, in conjunction with the laser displacement sensor 2, is used to monitor the shield tail deformation in real time, facilitating timely handling when deformation occurs. The laser displacement sensor 2 is connected to a support base 3, and the laser displacement sensor 2 and the support base 3 are detachably connected. A drive cylinder 4 is located on the top of the support base 3, which can be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder. The support base 3 supports the drive cylinder 4 and the laser displacement sensor 2, facilitating its fixation on the bracket at the shield tail of the TBM. This ensures stable support of the drive cylinder 3 and the laser displacement sensor 2, allowing the laser displacement sensor 2 to reliably monitor shield tail deformation. The drive cylinder 4 applies pressure to the deformed location when shield tail deformation occurs. A pressure block 5 is mounted on the top of the drive cylinder 4, and the pressure block 5 is detachably connected to the drive cylinder 4. When the shield tail deforms, the pressure block 5 applies pressure to the deformed location through the drive cylinder 4.

[0039] like Figure 2 As shown, the monitor 1 has a display screen 12 on its upper surface. The display screen 12 is for convenient display of monitoring data, and the monitor 1 can be connected to the control system of the tunnel boring machine (TBM) to facilitate feedback to the TBM control system when abnormal monitoring results occur, allowing staff to handle the situation promptly. Below the display screen 12, the monitor 1 has a control panel 11 for convenient operation of the monitor. Support feet 13 are located at the corners of the bottom of the monitor 1 to ensure stability. A wire 14 is located on one side of the back of the monitor 1, with a power connector 15 at one end. The wire 14 and the power connector 15 facilitate powering the monitor 1 for easy operation. A connection slot 17 is located on the back of the monitor 1 for electrical connection between the laser displacement sensor 2 and the monitor 1.

[0040] like Figure 3 As shown, the laser displacement sensor 2 has an adapter 21 on its top, which is threadedly connected to the support base 3; this facilitates stable installation and use of the laser displacement sensor 2. The bottom of the laser displacement sensor 2 has a connecting wire 22, and the end of the connecting wire 22 has a connecting plug 23, which is connected to the connecting slot 17; this structure facilitates the use of the laser displacement sensor 2 in conjunction with the monitoring instrument 1.

[0041] like Figure 4As shown, the support base 3 has a fixing plate 31 at its bottom end, and the fixing plate 31 has multiple fixing holes 32 on its edge. The support base 3, in conjunction with the fixing plate 31 and fixing holes 32, facilitates the fixing of the support base 3 with bolts. The support base 3 has symmetrical openings 35 on both sides, which facilitate the disassembly and assembly of the drive cylinder 4, making it easy for operators to operate. The top of the support base 3 has a through hole 36, which allows the drive cylinder 4 to pass through the support base 3. A limiting sleeve 37 is provided around the through hole 36 at the top of the support base 3, which limits and fixes the bottom of the drive cylinder 4. The top side of the support base 3 has a mounting connector 33, and the mounting connector 33 has a mounting hole 34 in its center. The mounting hole 34 is threadedly connected to the adapter 21, facilitating the stable installation and use of the laser displacement sensor 2.

[0042] like Figure 5 As shown, the bottom end of the drive cylinder 4 is provided with a stud 41, and one end of the stud 41 that passes through the support base 3 is provided with a pressure cap 42; the pressure cap 42 is pressed tightly onto the support base 3, thereby achieving stable installation of the drive cylinder 4. The output end of the drive cylinder 4 is provided with a telescopic rod 43, which facilitates the up and down movement of the pressure block 5. The top end of the telescopic rod 43 is provided with a support joint 44, and the middle of the support joint 44 is provided with a threaded groove 45.

[0043] like Figure 6 As shown, the bottom of the pressure block 5 is provided with a hexagonal body 51, which facilitates the screwing of the pressure block 5 and makes it easy to use. The bottom surface of the hexagonal body 51 is provided with a threaded connector 52, which is connected to the threaded groove 45, making it easy to disassemble and use the pressure block 5.

[0044] like Figure 1 and Figure 2 As shown, it also includes a buckle 6. The bottom of the back of the monitor 1 is provided with a slot 16. The cross-section of the slot 16 is T-shaped, and the buckle 6 is engaged inside the slot 16. This structure facilitates the buckle 6 to be stably engaged inside the slot 16, and makes it easy to disassemble and assemble the buckle 6 according to the usage requirements, so as to facilitate the flexible disassembly and use of the buckle 6.

[0045] like Figure 7 As shown, an arc-shaped locking plate 61 is connected to the rear opening 35 of the buckle 6. Both the arc-shaped locking plate 61 and the buckle 6 have ear plates 62 at both ends, which are connected by connecting bolts 63. This structure allows the buckle 6 to be easily engaged with the column structure at the tail of the shield, thus providing stable support for the monitoring instrument 1. The buckle 6 has locking feet 64 facing the monitoring instrument 1, which engage inside the locking groove 16, facilitating the use of the buckle 6 with the monitoring instrument 1. A positioning plate 65 is located below the locking feet 64, and multiple positioning bolts 66 are provided on the positioning plate 65. The positioning plate 65, in conjunction with the positioning bolts 66, facilitates the fixing of the locking feet 64.

[0046] Working principle: In use, the support base 3 is first fixed to the bracket at the tail of the shield machine by the bottom fixing plate 31 and fixing hole 32 with bolts. The laser displacement sensor 2 is fixed by threaded connection between the top adapter 21 and the side mounting hole 34 of the support base 3. The connector 23 of the bottom connecting line 22 is inserted into the connecting slot 17 on the back of the monitor 1 to form an electrical connection. At the same time, the monitor 1 can engage the buckle 6 through the back slot 16. The buckle 6 is engaged with the column at the tail of the shield by the bolts of the arc-shaped plate 61 and the ear plates 62 at both ends. Then, the position of the foot 64 is fixed by the positioning plate 65 and the positioning bolt 66 to ensure that the monitor 1 is stably supported. Based on this, the monitoring instrument 1, together with the laser displacement sensor 2, monitors the shield tail deformation in real time. The monitoring data is displayed on the display screen 12. The monitoring instrument 1 can be connected to the shield machine control system. If abnormal shield tail deformation is detected, it will promptly report to the control system. The emergency drive cylinder 4 (which is one of a hydraulic cylinder, pneumatic cylinder or electric cylinder) has a bottom stud 41 that passes through the top hole 36 of the support base 3 and is then pressed and fixed by the pressure cap 42. The support joint 44 of the top telescopic rod 43 is connected to the bottom threaded joint 52 of the pressure block 5 through the middle threaded groove 45. When the shield tail deformation signal is received, the drive cylinder 4 drives the telescopic rod 43 to extend and retract, which drives the pressure block 5 to apply pressure to the shield tail deformation position, thereby realizing the emergency treatment of shield tail deformation and ensuring the stability of shield tail performance.

[0047] In summary, compared with the prior art, this application can press down on the easily deformable position of the shield tail by setting up the support base 3 in conjunction with the drive cylinder 4, which is convenient for pressing down on the shield tail when it deforms; at the same time, a laser displacement sensor 2 is provided on one side of the support base 3, which is aligned with the easily deformable position of the shield tail for processing; the laser displacement sensor 2 is used in conjunction with the monitoring instrument 1 to transmit the monitored data to the monitoring instrument 1 in real time, which is convenient for the staff to observe the data through the monitoring instrument 1, and also convenient for the monitoring instrument 1 to control the operation of the entire device.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shield tail monitoring device for a tunnel boring machine, comprising a monitoring instrument (1), characterized in that, The monitoring instrument (1) is electrically connected to a laser displacement sensor (2), the laser displacement sensor (2) is connected to a support base (3), and the laser displacement sensor (2) and the support base (3) are detachably connected; the support base (3) is provided with a drive cylinder (4) at the top, and a pressure block (5) is installed at the top of the drive cylinder (4). The pressure block (5) is detachably connected to the drive cylinder (4), and the pressure block (5) applies pressure to the deformed position by the drive cylinder (4) when the shield tail deforms.

2. The shield tail monitoring device for a tunnel boring machine according to claim 1, characterized in that, The monitor (1) has a display screen (12) on its upper surface, and a control panel (11) is provided below the display screen (12) on the monitor (1). The monitor (1) has a support foot (13) at the bottom corner.

3. The shield tail monitoring device for a tunnel boring machine according to claim 2, characterized in that, The monitor (1) has a wire (14) on one side of its back, and a power plug (15) at the end of the wire (14). The monitor (1) also has a connection slot (17) on its back.

4. A shield tail monitoring device for a tunnel boring machine according to claim 3, characterized in that, The laser displacement sensor (2) is provided with an adapter (21) at the top, and the adapter (21) is threadedly connected to the support base (3); the laser displacement sensor (2) is provided with a connecting line (22) at the bottom, and a connecting plug (23) is provided at the end of the connecting line (22), and the connecting plug (23) is connected to the connecting slot (17).

5. A shield tail monitoring device for a tunnel boring machine according to claim 1, characterized in that, The support base (3) has a fixing plate (31) at the bottom end, and the fixing plate (31) has multiple fixing holes (32) on its edge. The support base (3) has symmetrical openings (35) on both sides, and the support base (3) has a through hole (36) at the top end. The support base (3) also has a limiting sleeve (37) around the through hole (36) at the top end.

6. A shield tail monitoring device for a tunnel boring machine according to claim 4, characterized in that, The support base (3) has a mounting joint (33) on the top side, and a mounting hole (34) is provided in the middle of the mounting joint (33). The mounting hole (34) is threadedly connected to the adapter (21).

7. A shield tail monitoring device for a tunnel boring machine according to claim 1, characterized in that, The bottom end of the drive cylinder (4) is provided with a stud (41), and the end of the stud (41) that passes through the support base (3) is provided with a pressure cap (42); the output end of the drive cylinder (4) is provided with a telescopic rod (43), the top end of the telescopic rod (43) is provided with a support joint (44), and the middle part of the support joint (44) is provided with a threaded groove (45).

8. A shield tail monitoring device for a tunnel boring machine according to claim 7, characterized in that, The pressure block (5) has a hexagonal body (51) at its bottom end, and a threaded joint (52) is provided in the middle of the bottom surface of the hexagonal body (51), and the threaded joint (52) is connected to the threaded groove (45).

9. A shield tail monitoring device for a tunnel boring machine according to any one of claims 1-8, characterized in that, It also includes a buckle (6), and the bottom of the back of the monitor (1) is provided with a slot (16). The cross-section of the slot (16) is T-shaped, and the buckle (6) is engaged inside the slot (16).

10. A shield tail monitoring device for a tunnel boring machine according to claim 9, characterized in that, An arc-shaped plate (61) is connected to the rear opening (35) of the buckle (6). Both ends of the arc-shaped plate (61) and the buckle (6) are provided with ear plates (62). The ear plates (62) at both ends of the arc-shaped plate (61) and the buckle (6) are connected by connecting bolts (63). The buckle (6) is provided with a locking foot (64) facing the monitor (1). The locking foot (64) is engaged in the slot (16). A positioning plate (65) is provided below the locking foot (64). Multiple positioning bolts (66) are provided on the positioning plate (65).

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