Tunneling device and tunneling machine

Abstract

The application provides a tunneling device and a tunneling machine, and relates to the technical field of tunnel construction, to solve the problem that the hinge oil cylinder is easily damaged due to the pushing mode of related technologies. The tunneling device comprises a front shield, a middle shield and a tail shield, and the inside of the tunneling device is provided with a first pushing assembly, a second pushing assembly and an auxiliary pushing piece; the auxiliary pushing piece is located between the front shield and the second pushing assembly; when the front shield is stuck, the second pushing assembly moves in the tunneling direction to make the second end of the second pushing assembly contact and abut against the auxiliary pushing piece, thereby pushing the front shield and realizing the unsticking of the front shield. The application sets a double mechanical force transmission structure, thereby being beneficial to avoiding the risk that the hinge oil cylinder is damaged when the single mechanical force transmission structure transmits the superhigh pushing force to the front shield; meanwhile, the application transmits the superhigh pushing force to the front shield, which is helpful to realize the unsticking of the front shield and thereby ensure the normal tunneling of the shield machine.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, and in particular to a tunnel boring device and a tunnel boring machine. Background Technology

[0002] A tunnel boring machine (TBM), also known as a shield tunneling machine, is a specialized engineering machine for tunnel excavation. It has functions such as excavating and cutting soil, transporting excavated material, assembling tunnel lining, and measuring and guiding the tunnel. Using TBMs for tunnel construction offers advantages such as high automation, labor savings, and fast construction speed. It is particularly economical and reasonable for tunnels with long tunnel lengths and significant depths.

[0003] During tunneling, due to uneven construction levels, geological factors, or prolonged downtime, situations inevitably arise where the front shield jams, hindering further excavation. Under such conditions, conventional tunnel boring machines (TBMs) are prone to becoming trapped, thus affecting construction progress. Related technologies often utilize articulated hydraulic cylinders to transmit ultra-high thrust to the front shield, ensuring the TBM can continue tunneling normally.

[0004] However, with the aforementioned propulsion method, the articulated hydraulic cylinder is prone to damage. Summary of the Invention

[0005] The embodiments of this application provide a tunnel boring device and a tunnel boring machine, which helps to avoid the risk of damage to the articulated cylinder when transmitting ultra-high thrust to the front shield through a single mechanical force transmission structure; at the same time, this application helps to achieve the front shield to get out of trouble, thereby ensuring the normal tunneling of the shield machine.

[0006] To achieve the above objectives, a first aspect of this application provides a tunnel boring machine, including a front shield, a middle shield, and a tail shield. The front shield is located on the side of the tunnel boring machine closer to the tunneling end, and the tail shield is located on the side of the tunnel boring machine away from the tunneling end. The middle shield is connected between the front shield and the tail shield. The tunnel boring machine is internally provided with a first propulsion assembly, a second propulsion assembly, and at least one auxiliary propulsion component. A first end of the first propulsion assembly is connected to the front shield, and a second end of the first propulsion assembly is connected to the middle shield. The second propulsion assembly and the first propulsion assembly are arranged side by side along the radial direction of the tunnel boring machine. The auxiliary propulsion component is located between the front shield and the second propulsion assembly. A first end of the auxiliary propulsion component is fixedly connected to the front shield, and a second end of the auxiliary propulsion component is located on the side closer to the second propulsion assembly. When the front shield is stuck, the second propulsion assembly moves along the tunneling direction so that the second end of the second propulsion assembly contacts and abuts against the auxiliary propulsion component, thereby pushing the front shield and freeing it from the obstruction.

[0007] In one possible implementation, the auxiliary propulsion components include a plurality of auxiliary propulsion components arranged in a circumferential array along the axis of the tunnel boring device. The ends of the plurality of auxiliary propulsion components located near the front shield are fixedly connected to the front shield, and the ends of the plurality of auxiliary propulsion components located near the middle shield are used to abut against the second propulsion component when the second propulsion component moves along the tunneling direction.

[0008] In one possible implementation, the auxiliary propulsion components include multiple components connected together along the axial direction from the front shield to the middle shield. The auxiliary propulsion component located near the front shield is fixedly connected to the front shield, and the auxiliary propulsion component located near the middle shield is used to abut against the second propulsion component when the second propulsion component moves along the tunneling direction.

[0009] In one possible implementation, the second propulsion assembly includes a second propulsion cylinder; the second end of the auxiliary propulsion member is located on the side close to the second propulsion cylinder, and when the front shield jams, the second propulsion cylinder moves along the direction of tunneling and presses against the auxiliary propulsion member.

[0010] In one possible implementation, the second propulsion assembly further includes a support shoe connected to a first end of the second propulsion cylinder, and the tunnel boring device is lined with segments; when the front shield jams, the support shoe moves away from the auxiliary propulsion member and abuts against the segments, so that the second propulsion cylinder moves towards the auxiliary propulsion member and presses against the auxiliary propulsion member.

[0011] In one possible implementation, a hydraulic pump station is also included, which is connected to the second propulsion cylinder. The hydraulic pump station is used to provide ultra-high pressure hydraulic oil to the second propulsion cylinder when the front shield is stuck, so as to drive the piston rod in the second propulsion cylinder to extend.

[0012] In one possible implementation, an elastic element is further included, which is disposed between the auxiliary propulsion member and the second propulsion assembly; the second end of the second propulsion assembly abuts against the auxiliary propulsion member through the elastic element.

[0013] In one possible implementation, the first propulsion assembly includes a first propulsion cylinder, the two ends of which are respectively connected to the front shield and the middle shield.

[0014] In one possible implementation, the auxiliary propulsion component is a columnar rigid support or a cylindrical rigid support; and / or, the elastic component is a rubber pad; the elastic component is connected to the auxiliary propulsion component by adhesive bonding; and / or, the auxiliary propulsion component is fixedly connected to the front shield by any one of threaded connection, snap-fit, or welding.

[0015] A second aspect of the embodiments of this application also provides a tunnel boring machine, which includes at least an excavation device, a muck removal device, and a tunnel boring device.

[0016] The tunnel boring machine and tunnel boring device provided in this application embodiment, by including a first propulsion component, a second propulsion component, and at least one auxiliary propulsion component, wherein the second propulsion component and the auxiliary propulsion component, as well as the second propulsion component and the first propulsion component, together form a dual mechanical force transmission structure, thereby enabling the simultaneous transmission of ultra-high thrust to the front shield through the dual mechanical force transmission structure. This helps to avoid the risk of damage to the articulated cylinder caused by transmitting ultra-high thrust to the front shield through a single articulated cylinder, thus maximizing the safety protection of the articulated cylinder. At the same time, the force transmission through the dual mechanical force transmission structure of this application is beneficial to quickly transmit ultra-high thrust to the front shield, thereby quickly achieving the front shield's escape and ensuring the normal tunneling of the shield machine.

[0017] The structure of this application, as well as its other objectives and beneficial effects, will become more apparent from the description of the preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the tunnel boring device provided in the embodiments of this application;

[0020] Figure 2 A cross-sectional view of the tunnel boring device provided in the embodiments of this application;

[0021] Figure 3 for Figure 2 A partially enlarged structural diagram of section I;

[0022] Figure 4 for Figure 3 A partially enlarged structural diagram of section II;

[0023] Figure 5Schematic diagram of the structure of multiple auxiliary propulsion components of the tunnel boring device provided in the embodiments of this application Figure 1 ;

[0024] Figure 6 Schematic diagram of the structure of multiple auxiliary propulsion components of the tunnel boring device provided in the embodiments of this application Figure 2 ;

[0025] Figure 7 A schematic diagram of the tunnel boring machine provided in this application embodiment during normal tunneling and without jamming of the front shield;

[0026] Figure 8 This is a schematic diagram of the structure of the tunnel boring device provided in this application, where the front shield is stuck, and the second propulsion component moves along the tunneling direction and contacts and abuts against the auxiliary propulsion component.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 - Tunnel boring machine;

[0029] 110 - Front shield; 120 - Middle shield;

[0030] 130 - Tail shield; 140 - First propulsion component;

[0031] 141 - First end of the first propulsion assembly; 142 - Second end of the first propulsion assembly;

[0032] 143 - First propulsion cylinder; 150 - Second propulsion assembly;

[0033] 151 - First end of the second propulsion assembly; 152 - Second end of the second propulsion assembly;

[0034] 153 - Second propulsion cylinder; 154 - Support shoe;

[0035] 160 - Auxiliary propulsion component; 161 - First end of the auxiliary propulsion component;

[0036] 162 - Second end of the auxiliary propulsion component; 170 - Elastic component;

[0037] 180-segment. Detailed Implementation

[0038] The shield tunneling method is a fully mechanized construction method. It involves advancing a shield machine in the ground, using the shield shell and segments to support the surrounding rock and prevent collapse into the tunnel. At the same time, cutting devices are used to excavate the soil in front of the excavation face, and the soil is transported out of the tunnel by excavation machinery. Jacks are used to pressurize and push the tunnel forward from the rear, and precast concrete segments are assembled to form the tunnel structure.

[0039] A tunnel boring machine (TBM), also known as a shield tunneling machine, is a specialized engineering machine for tunnel excavation. It has functions such as excavating and cutting soil, transporting excavated material, assembling tunnel lining, and measuring and guiding the tunnel. Using TBMs for tunnel construction offers advantages such as high automation, labor savings, and fast construction speed. It is particularly economical and reasonable for tunnels with long tunnel lengths and significant depths.

[0040] During tunneling, due to uneven construction levels, geological factors, or prolonged downtime, situations inevitably arise where the front shield gets stuck, hindering further progress. For example, unstable geological conditions, such as ground deformation or collapse, can cause the tunnel boring machine (TBM) to jam and prevent it from advancing normally. Under such conditions, conventional TBMs are prone to getting stuck, thus affecting the construction progress.

[0041] In related technologies, a single articulated hydraulic cylinder is often used to transmit ultra-high thrust to the front shield to ensure that the tunnel boring machine can advance normally. However, when using a single articulated hydraulic cylinder to transmit ultra-high thrust to the front shield, the articulated hydraulic cylinder needs to generate sufficiently high hydraulic pressure, and the articulated hydraulic cylinder is prone to damage due to excessive hydraulic pressure.

[0042] Based on the aforementioned technical problems, this application provides a tunnel boring machine and a tunnel boring device. The device comprises a first propulsion assembly, a second propulsion assembly, and at least one auxiliary propulsion component. The second propulsion assembly and the auxiliary propulsion component, as well as the second propulsion assembly and the first propulsion assembly, together form a dual mechanical force transmission structure. This allows for the simultaneous transmission of ultra-high thrust to the front shield via the dual mechanical force transmission structure. This avoids the risk of damage to the articulated cylinder caused by transmitting ultra-high thrust to the front shield via a single articulated cylinder, thus maximizing the safety protection of the articulated cylinder. Furthermore, the dual mechanical force transmission structure facilitates the rapid transmission of ultra-high thrust to the front shield, enabling the front shield to quickly escape obstacles and ensuring the normal tunneling of the tunnel boring machine.

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Figure 1 This is a schematic diagram of the tunnel boring device provided in the embodiments of this application. Figure 2 This is a cross-sectional view of the tunnel boring device provided in the embodiments of this application. Figure 3 for Figure 2 A magnified schematic diagram of a portion of the structure in section I. Figure 4 for Figure 3 A partially enlarged structural diagram of section II. Figure 5 Schematic diagram of the structure of multiple auxiliary propulsion components of the tunnel boring device provided in the embodiments of this application Figure 1 , Figure 6 Schematic diagram of the structure of multiple auxiliary propulsion components of the tunnel boring device provided in the embodiments of this application Figure 2 , Figure 7 This is a schematic diagram of the tunnel boring machine provided in this embodiment of the application during normal tunneling, with no jamming of the front shield. Figure 8 This is a schematic diagram of the structure of the tunnel boring device provided in this application, where the front shield is stuck, and the second propulsion component moves along the tunneling direction and contacts and abuts against the auxiliary propulsion component.

[0045] Reference Figures 1 to 4 As shown in the illustration, this application provides a tunnel boring machine (TBM), which is mainly used in tunnels to excavate the tunnel strata. In this embodiment, a shield tunneling machine is used as an example for explanation.

[0046] A tunnel boring machine includes at least an excavation device, a muck removal device, and a tunnel boring unit 100. The excavation device is located at the excavation end of the tunnel boring unit and is used to excavate the tunnel strata. The excavation end is the foremost point, and the excavation device is a cutterhead. The muck removal device is connected to the excavation device and is used to discharge the excavated muck to the outside of the tunnel.

[0047] Reference Figure 2 and Figure 3 As shown, the tunnel boring machine 100 includes a front shield 110, a middle shield 120 and a tail shield 130. The front shield 110 is located on the side of the tunnel boring machine 100 closer to the tunneling end, the tail shield 130 is located on the side of the tunnel boring machine 100 farther from the tunneling end, and the middle shield 120 is connected between the front shield 110 and the tail shield 130.

[0048] It should be noted that the tunneling end, also known as the excavation end, is located at the very front of the tunnel boring machine 100.

[0049] The tunnel boring machine 100 is internally equipped with a first propulsion component 140, a second propulsion component 150, and at least one auxiliary propulsion component 160.

[0050] For example, the auxiliary propulsion member 160 may include one, two, or multiple. In this embodiment, the example mainly uses one auxiliary propulsion member 160 for illustration.

[0051] The structures of the first propulsion assembly 140 and the second propulsion assembly 150 are described below:

[0052] Reference Figure 2 and Figure 3 As shown, the first propulsion assembly 140 includes a first propulsion cylinder 143, the two ends of which are connected to the front shield 110 and the middle shield 120, respectively. The second propulsion assembly 150 includes a second propulsion cylinder 153 and a support shoe 154, the support shoe 154 being connected to the first end 151 of the second propulsion assembly, which is the end of the second propulsion cylinder 153.

[0053] The assembly structure of the first propulsion assembly 140, the second propulsion assembly 150, and the auxiliary propulsion component 160 is described below:

[0054] During assembly, the first end 141 of the first propulsion assembly is connected to the front shield 110, and the second end 142 of the first propulsion assembly is connected to the middle shield 120. The second propulsion assembly 150 and the first propulsion assembly 140 are arranged side by side along the radial direction of the tunnel boring machine 100.

[0055] It should be noted that the radial direction of the tunnel boring machine 100 is a straight line along the diameter or radius.

[0056] The auxiliary propulsion component 160 is located between the front shield 110 and the second propulsion assembly 150. The first end 161 of the auxiliary propulsion component is fixedly connected to the front shield 110, and the second end 162 of the auxiliary propulsion component is located on the side close to the second end 152 of the second propulsion assembly. The tunnel boring machine 100 is lined with segments 180. When the front shield 110 is stuck, the support shoe 154 moves in a direction away from the auxiliary propulsion component 160 and abuts against the segments 180, so that the second propulsion cylinder 153 moves in the tunneling direction and abuts against the auxiliary propulsion component 160.

[0057] Among them, the tunneling direction is as follows Figure 2 The direction indicated by the middle arrow A.

[0058] For example, the first end 161 of the auxiliary propulsion component and the front shield 110 can be fixedly connected by means of flange connection, welding or threaded connection.

[0059] The mechanical force transmission structure and mechanical force transmission path of the tunnel boring device 100 provided in this application embodiment are described as follows:

[0060] The first mechanical force transmission structure includes: a second propulsion assembly 150 and an auxiliary propulsion component 160.

[0061] The first mechanical force transmission path: When the front shield 110 is stuck, the support shoe 154 moves away from the auxiliary propulsion component 160 and pushes against the tunnel segment 180. The second propulsion cylinder 153 moves along the tunneling direction and presses against the auxiliary propulsion component 160. Since the auxiliary propulsion component 160 and the front shield 110 are fixedly connected, the ultra-high thrust can be transmitted to the front shield 110 through the auxiliary propulsion component 160. Thus, the front shield 110 can get out of trouble under the action of ultra-high thrust, thereby ensuring the normal tunneling of the tunnel boring machine.

[0062] For example, the force transmission direction of the first force transmission path can be referenced Figure 7 and Figure 8 Force is transmitted in the direction of the middle arrow A1. Specifically, Figure 7 This is a schematic diagram of the tunnel boring machine 100 in normal tunneling operation with no jamming in the front shield 110. At this time, the auxiliary propulsion component 160 and the second propulsion assembly 150 are not connected. Figure 8 This is a schematic diagram showing the structure in which the second propulsion component 150 moves along the tunneling direction and contacts and abuts against the auxiliary propulsion component 160 when the front shield 110 becomes stuck.

[0063] The second mechanical force transmission structure includes a second propulsion assembly 150 and a first propulsion assembly 140.

[0064] The second mechanical force transmission path: When the front shield 110 is stuck, the support shoe 154 moves away from the auxiliary propulsion component 160 and pushes against the tunnel segment 180. The second end 152 of the second propulsion component moves towards the auxiliary propulsion component 160. Since the second propulsion component 150 is connected to the first propulsion component 140, the second propulsion component 150 transmits the ultra-high thrust to the first propulsion component 140, and then transmits it to the front shield 110 through the first propulsion component 140. Thus, the front shield 110 can get out of trouble under the action of ultra-high pressure thrust, thereby ensuring the normal tunneling of the tunnel boring machine.

[0065] For example, the force transmission direction of the second force transmission path can be referred to Figure 7 and Figure 8 Force is transmitted in the direction of the middle arrow A2.

[0066] It should be noted that in the embodiments of this application, the first mechanical force transmission path and the second mechanical force transmission path can transmit force simultaneously, or force can be transmitted only through the first mechanical force transmission path. In the embodiments of this application, the simultaneous transmission of force through the first mechanical force transmission path and the second mechanical force transmission path is mainly used as an example for illustration.

[0067] It should be noted that "Qiandun 110 jamming" refers to a situation where the Qiandun 110 jams, stops, or is difficult to excavate due to uneven construction levels, geological factors, or prolonged downtime.

[0068] In addition, this embodiment of the application also includes a hydraulic pump station, which is connected to the second propulsion cylinder 153. The hydraulic pump station is used to provide high-pressure hydraulic oil to the second propulsion cylinder 153 when the current shield 110 is stuck, thereby driving the piston rod in the second propulsion cylinder 153 to extend.

[0069] Therefore, in this embodiment, the second propulsion component 150 and the auxiliary propulsion component 160, as well as the second propulsion component 150 and the first propulsion component 140, together form a dual mechanical force transmission structure. This structure can simultaneously transmit ultra-high thrust to the front shield 110, thereby avoiding the risk of damage to the articulated cylinder caused by transmitting ultra-high thrust to the front shield 110 through a single articulated cylinder, and maximizing the safety protection of the articulated cylinder. At the same time, the dual mechanical force transmission structure in this application facilitates the rapid transmission of ultra-high thrust to the front shield 110, thereby quickly enabling the front shield 110 to escape obstacles and ensuring the normal tunneling of the tunnel boring machine.

[0070] In one possible implementation, the auxiliary propulsion member 160 may include multiple members connected together along the axial direction from the front shield 110 to the middle shield 120.

[0071] For example, refer to Figure 5 As shown, the two auxiliary propulsion components 160 are used as an example for explanation. The left auxiliary propulsion component 160 is fixedly connected to the front shield 110, and the right auxiliary propulsion component 160 is used to abut against the second propulsion assembly 150. The connection method between the two auxiliary propulsion components 160 is not further limited. For example, the two auxiliary propulsion components 160 can be connected by a hinge.

[0072] By including multiple auxiliary propulsion components 160, it is beneficial to increase the ultra-high thrust on the front shield 110 when transmitting force along the first mechanical force transmission path, thereby enabling the front shield 110 to be freed from its predicament more quickly and ensuring the normal tunneling of the tunnel boring machine.

[0073] In one possible implementation, refer to Figure 6 As shown, the auxiliary propulsion component 160 may include multiple components, which may be arranged in a circumferential array along the axis of the tunnel boring machine 100. The ends of the multiple auxiliary propulsion components 160 located near the front shield 110 are fixedly connected to the front shield 110, and the ends of the multiple auxiliary propulsion components 160 located near the middle shield 120 are used to abut against the second propulsion component 150 when the second propulsion component 150 moves.

[0074] For example, refer to Figure 6 As shown, the auxiliary propulsion component 160 may include three, and the three auxiliary propulsion components 160 are arranged in a circumferential array along the axis of the tunnel boring device 100.

[0075] By including multiple auxiliary propulsion components 160, it is beneficial to increase the ultra-high thrust on the front shield 110 when transmitting force along the first mechanical force transmission path, thereby enabling the front shield 110 to be freed from its predicament more quickly and ensuring the normal tunneling of the tunnel boring machine.

[0076] It should be noted that when there are multiple auxiliary propulsion components 160, there are no further restrictions on the specific arrangement and position of the multiple auxiliary propulsion components 160. The specific arrangement can be designed according to the distribution angle of the second propulsion cylinder 153.

[0077] In one possible implementation, an elastic element 170 may also be included, disposed between the auxiliary propulsion member 160 and the second propulsion assembly 150. Thus, when the current shield 110 is jammed, the second end 152 of the second propulsion assembly moves in a direction closer to the auxiliary propulsion member 160, and the second end 152 of the second propulsion assembly abuts against the second end 162 of the auxiliary propulsion member via the elastic element 170.

[0078] For example, the elastic element 170 can be a rubber pad or a silicone pad. By setting a rubber pad or silicone pad, which is relatively soft and elastic, the use of the rubber pad or silicone pad can maximize the contact area between the second propulsion component 150 and the auxiliary propulsion component 160 when the tunnel boring machine is making curved tunneling and when a certain angle is formed between the second propulsion component 150 and the auxiliary propulsion component 160, thereby improving the bonding effect of the second propulsion component 150 and the auxiliary propulsion component 160 and helping to effectively reduce stress concentration.

[0079] Stress concentration refers to the uneven distribution of stress within the internal material of an object when it is subjected to external forces. This phenomenon can cause localized areas of the object to experience higher stress levels, thereby increasing the risk of failure. Therefore, reducing stress concentration can effectively improve structural stiffness.

[0080] In one possible implementation, the connection method between the elastic element 170 and the auxiliary propulsion element 160 is not further limited.

[0081] For example, the elastic element 170 and the auxiliary propulsion element 160 can be connected by adhesive bonding, or the elastic element 170 and the auxiliary propulsion element 160 can be connected by other means. After the elastic element 170 and the auxiliary propulsion element 160 are connected, they can be reinforced with cable ties or steel wires to improve the assembly stability of the elastic element 170 and the auxiliary propulsion element 160.

[0082] Furthermore, there are no further limitations on the connection method between the auxiliary propulsion component 160 and the front shield 110. For example, the auxiliary propulsion component 160 and the front shield 110 can be fixedly connected by any one of the following methods: threaded connection, snap-fit, or welding.

[0083] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0084] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0085] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "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 direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A tunnel boring machine, characterized in that, It includes a front shield, a middle shield, and a tail shield. The front shield is located on the side of the tunnel boring machine closer to the tunneling end, the tail shield is located on the side of the tunnel boring machine away from the tunneling end, and the middle shield is connected between the front shield and the tail shield. The tunnel boring machine is internally equipped with a first propulsion component, a second propulsion component, and at least one auxiliary propulsion component. The first end of the first propulsion component is connected to the front shield, the second end of the first propulsion component is connected to the middle shield, and the second propulsion component and the first propulsion component are arranged side by side along the radial direction of the tunnel boring machine. The auxiliary propulsion component is located between the front shield and the second propulsion assembly. The first end of the auxiliary propulsion component is fixedly connected to the front shield, and the second end of the auxiliary propulsion component is located on the side close to the second propulsion assembly. When the front shield is stuck, the second propulsion assembly moves along the tunneling direction so that the second end of the second propulsion assembly contacts and abuts against the auxiliary propulsion component, thereby pushing the front shield and enabling the front shield to get out of trouble. The second propulsion component is connected to the first propulsion component. The second propulsion component transmits ultra-high thrust to the first propulsion component, and then to the front shield via the first propulsion component.

2. The tunnel boring device according to claim 1, characterized in that, The auxiliary propulsion components include multiple components arranged in a circumferential array along the axis of the tunnel boring device. The ends of the multiple auxiliary propulsion components located near the front shield are fixedly connected to the front shield, and the ends of the multiple auxiliary propulsion components located near the middle shield are used to abut against the second propulsion component when the second propulsion component moves along the tunneling direction.

3. The tunnel boring device according to claim 1, characterized in that, The auxiliary propulsion components include multiple components connected together along the axial direction from the front shield to the middle shield. The auxiliary propulsion component located near the front shield is fixedly connected to the front shield, and the auxiliary propulsion component located near the middle shield is used to abut against the second propulsion component when the second propulsion component moves along the tunneling direction.

4. The tunnel boring device according to any one of claims 1-3, characterized in that, The second propulsion assembly includes a second propulsion cylinder; the second end of the auxiliary propulsion member is located on the side close to the second propulsion cylinder. When the front shield is stuck, the second propulsion cylinder moves along the direction of tunneling and presses against the auxiliary propulsion member.

5. The tunnel boring device according to claim 4, characterized in that, The second propulsion assembly also includes a support shoe, which is connected to the first end of the second propulsion cylinder, and the tunnel boring device is lined with segments. When the front shield jams, the support shoe moves away from the auxiliary propulsion member and abuts against the tube segment, so that the second propulsion cylinder moves towards the auxiliary propulsion member and abuts against the auxiliary propulsion member.

6. The tunnel boring device according to claim 5, characterized in that, It also includes a hydraulic pump station, which is connected to the second propulsion cylinder. The hydraulic pump station is used to provide ultra-high pressure hydraulic oil to the second propulsion cylinder when the front shield is stuck, so as to drive the piston rod in the second propulsion cylinder to extend.

7. The tunnel boring machine according to any one of claims 1-3, characterized in that, It also includes an elastic element disposed between the auxiliary propulsion member and the second propulsion assembly, wherein the second end of the second propulsion assembly abuts against the auxiliary propulsion member through the elastic element.

8. The tunnel boring machine according to any one of claims 1-3, characterized in that, The first propulsion assembly includes a first propulsion cylinder, the two ends of which are respectively connected to the front shield and the middle shield.

9. The tunnel boring machine according to claim 7, characterized in that, The auxiliary propulsion component is a columnar rigid support or a cylindrical rigid support; and / or, the elastic component is a rubber pad; The elastic element is connected to the auxiliary propulsion element by adhesive bonding; and / or, the auxiliary propulsion element is connected to the front shield by any one of threaded connection, snap-fit, or welding.

10. A tunnel boring machine, characterized in that, It includes at least an excavation device, a muck removal device, and a tunnel boring device as described in any one of claims 1-9 above; The excavation device is installed at the excavation end of the tunnel boring machine. The excavation device is used to excavate the tunnel strata. The slag discharge device is connected to the excavation device and is used to discharge the slag excavated by the excavation device to the outside of the tunnel.

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