Shield tail underground butt joint adjusting device and shield tail underground butt joint adjusting method

Abstract

The application provides a shield tail underground butt joint adjusting device and a shield tail underground butt joint adjusting method, and belongs to the technical field of shield machines, wherein the shield tail underground butt joint adjusting device comprises a base, a sliding seat, an adjusting assembly and a pressing piece; the base is arranged on a middle shield cylinder body, and a guide rail is arranged on the base; the sliding seat is arranged on the guide rail; and the pressing piece is arranged on the sliding seat through the adjusting assembly. When the shield tail underground butt joint adjusting device adjusts the shield tail cylinder body, no additional land space is needed, and only the pressing piece needs to be aligned at the position to be adjusted, so that the shield tail underground butt joint adjusting device occupies a small land space, needs a small operation space, can timely and effectively adjust the shield tail cylinder body underground, and can also handle the deformation of the shield tail in the tunnel during tunneling, so that on-site rapid repair is realized.

Description

Technical Field

[0001] This application relates to the field of tunnel boring machine technology, and in particular to a tunnel boring machine tail shaft docking adjustment device and a method for tail shaft docking adjustment. Background Technology

[0002] A tunnel boring machine (TBM), also known as a shield tunneling machine, is a specialized engineering machine that integrates underground tunneling and lining operations using the shield tunneling method. However, during the assembly of the shield tail and middle shield at the construction site, a problem arises where the connection between the tail and middle shield tubes is poor, failing to meet equipment assembly and construction requirements, and directly impacting subsequent tunneling.

[0003] In the prior art, for example, Chinese patent application with publication number CN114473357A discloses a tooling for ground assembly and roundness adjustment of the shield tail of a tunnel boring machine. During the docking and assembly of the shield tail and the middle shield, the required adjustment and docking tooling occupies a large space and can only be used to adjust the roundness of the shield tail cylinder on the ground, and cannot be used for underground operation. Summary of the Invention

[0004] This application provides a shield tail docking and adjustment device and a shield tail docking and adjustment method for underground operation, in order to solve the technical problem that the existing shield tail docking and adjustment cannot be carried out underground.

[0005] The first aspect of this application provides a shield machine tail shaft docking adjustment device, including a base, a sliding seat, an adjustment component, and a pressing component;

[0006] The base is used to be mounted on the central shield cylinder, and the base is provided with guide rails;

[0007] The sliding seat is slidably disposed on the guide rail so that the sliding seat slides along the extension direction of the guide rail;

[0008] The pressing member is mounted on the sliding seat via the adjusting assembly. The adjusting assembly is used to drive the pressing member to move toward the tail shield body so that the pressing member presses against the tail shield body.

[0009] In the preferred technical solution of the above-mentioned shield tail shaft docking and adjustment device, a locking component is also included, which is used to fix the sliding seat on the guide rail.

[0010] In the preferred technical solution of the above-mentioned shield tail shaft docking adjustment device, the base is provided with a groove to form the guide rail, and the sliding seat is provided with a protrusion that matches the groove.

[0011] In the preferred technical solution of the above-mentioned shield tail shaft docking adjustment device, the locking assembly includes at least one connecting bolt, the connecting bolt includes a connecting screw and a connecting nut, the groove is provided with a waist-shaped through hole, the connecting screw passes through the sliding seat and the waist-shaped through hole in sequence, and is connected to the connecting nut to fix the sliding seat on the groove.

[0012] In the preferred technical solution of the above-mentioned shield tail shaft docking adjustment device, the adjustment component includes at least one guide column and at least one adjustment screw. The sliding seat is provided with at least one guide through hole and at least one threaded through hole that matches the adjustment screw. The axis of the guide through hole is parallel to the axis of the threaded through hole.

[0013] The pressing component has an opposing mounting end and a pressing end, with the pressing end facing the shield tail cylinder. The guide post passes through the guide through hole and is connected to the mounting end, and the adjusting screw passes through the threaded through hole and abuts against the mounting end.

[0014] In the preferred technical solution of the shield tail shaft docking adjustment device of the above-mentioned shield machine, the number of the guide through holes is two, and the threaded through hole is located between the two guide through holes.

[0015] In the preferred technical solution of the above-mentioned shield tail shaft docking adjustment device, a first wedge and a second wedge are further included. The pressing end is a V-shaped surface, which includes a tip, a first inclined surface, and a second inclined surface. The first wedge is used to abut against the first inclined surface and the shield tail cylinder, and the second wedge is used to abut against the second inclined surface and the shield tail cylinder.

[0016] In the preferred technical solution of the above-mentioned shield tail shaft docking adjustment device, a pad block is also included, which is disposed between the sliding seat and the pressing member.

[0017] In the preferred technical solution of the above-mentioned shield tail shaft docking and adjustment device, the base includes a base and a stiffening plate. The guide rail and the stiffening plate are respectively arranged on two opposite surfaces of the base, and the stiffening plate is used to weld with the middle shield cylinder.

[0018] A second aspect of this application provides a method for adjusting the docking of the shield tail shaft in underground shaft, using the shield machine tail shaft docking adjustment device described in any one of the above-mentioned embodiments. The method includes:

[0019] Align the pressing element with the adjustment part of the tail cylinder;

[0020] The base is fixed to the central shield cylinder;

[0021] Drive the adjustment component to move the pressing member toward the adjustment part, so that the pressing member presses the adjustment part until the adjustment part is pressed to the docking position with the middle shield cylinder.

[0022] This application provides a shield tail shaft docking adjustment device and method for a tunnel boring machine (TBM). The shield tail shaft docking adjustment device includes a base, a sliding seat, an adjustment assembly, and a pressing component. The base is mounted on the middle shield body and has a guide rail. The sliding seat is mounted on the guide rail so that it can move along the direction of the guide rail. The pressing component is mounted on the sliding seat via the adjustment assembly, which drives the pressing component to move toward the shield tail body so that it presses against the shield tail body. Because the shield tail shaft docking and adjustment device of this application does not require additional space or to cover the entire shield tail cylinder when adjusting the shield tail cylinder, it only needs to align the pressing parts at the position to be adjusted. Therefore, the shield tail shaft docking and adjustment device of this application occupies little space and requires little space for operation. It can dock and adjust the shield tail cylinder in a timely and effective manner underground. Furthermore, it can also handle shield tail deformation during tunneling inside the tunnel, achieving rapid on-site repair and solving the technical problem that existing shield tail docking and adjustment cannot be carried out underground. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] Figure 1 A schematic diagram of the structure of the shield tail docking adjustment device provided in the embodiments of this application;

[0025] Figure 2 for Figure 1 A cross-sectional structural diagram in use;

[0026] Figure 3 for Figure 1 Schematic diagram of the central base;

[0027] Figure 4 for Figure 1 A structural diagram from another angle;

[0028] Figure 5 for Figure 1 A schematic diagram of the structure of the second wedge block.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100 - Base; 110 - Base plate; 120 - Rib plate;

[0031] 200-Sliding seat;

[0032] 300 - Adjustment assembly; 310 - Guide post; 320 - Adjustment screw; 330 - Locking nut;

[0033] 400 - Pressing element; 410 - Mounting end; 420 - Pressing end;

[0034] 500-guide rail;

[0035] 600 - Locking assembly; 610 - Connecting bolt;

[0036] 700 - Protrusion;

[0037] 800-Oval through hole;

[0038] 900 - Guide hole;

[0039] 1000 - Threaded through hole;

[0040] 1100 - First wedge;

[0041] 1200 - Second wedge;

[0042] 1300-Place Block;

[0043] 1400-shield tail barrel;

[0044] 1500 - Guide groove.

[0045] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0046] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0047] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0048] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0050] A tunnel boring machine (TBM), also known as a shield tunneling machine, is a specialized engineering machine that integrates underground tunneling and lining operations using the shield tunneling method. It is widely used in tunnel engineering projects such as subways, highways, municipal works, coal mines, and water conservancy projects. With the development of shield tunneling construction and equipment manufacturing technologies, the production and assembly processes of TBMs have also faced higher requirements.

[0051] One issue encountered during the on-site assembly of the shield tail and middle shield of the tunnel boring machine (TBM) in the construction shaft was poor docking of the tail and middle shield sections, failing to meet equipment assembly and construction requirements and directly impacting subsequent tunneling. The main reason is that the tail shield is a cylindrical component made of rolled steel plates, typically exceeding 6 meters in length. During the docking and welding process with the middle shield in the shaft, the lack of internal steel support means that the weight of the tail shield during lowering causes elliptical deformation at the docking point. This results in localized concavity or convexity of the tail shield section, easily leading to misalignment or dislocation relative to the middle shield section. In some cases, the insufficient gap between the tail and middle shield sections can cause them to break under pressure, affecting the TBM's travel angle and path, especially pronounced in large-diameter TBMs. Therefore, it is essential to promptly repair and adjust the out-of-roundness and deformed tail shield section to ensure that coaxiality, roundness, and minimum misalignment are within allowable tolerances, meeting tunneling requirements.

[0052] In the existing technology, the docking and assembly process of the tail shield and the middle shield requires docking and adjustment tools that occupy a large space. The roundness docking and adjustment of the tail shield cylinder can only be performed on the ground, and it is not possible to operate underground.

[0053] To address the technical problem that existing shield tail docking adjustments cannot be performed underground, this application proposes an underground docking adjustment device and method for shield tails. The underground docking adjustment device includes a base, a sliding seat, an adjustment assembly, and a pressing component. The base is mounted on the middle shield body and has a guide rail. The sliding seat is mounted on the guide rail so that it can move along the direction of the guide rail. The pressing component is mounted on the sliding seat via the adjustment assembly, which drives the pressing component to move towards the shield tail body, pressing against the shield tail body. The direction of movement of the pressing component is perpendicular to the direction of the guide rail.

[0054] When using it, first align the pressing part with the adjustment part of the tail shield cylinder that needs to be adjusted; then fix the base on the middle shield cylinder; finally operate the adjustment component, the adjustment component drives the pressing part to move towards the adjustment part, so that the pressing part presses the adjustment part until the adjustment part is pressed to the docking position with the middle shield cylinder, thereby completing the roundness adjustment of the tail shield cylinder, and thus realizing the docking of the tail shield cylinder and the middle shield cylinder.

[0055] Because the shield tail shaft docking and adjustment device of this application does not require additional space or to cover the entire shield tail cylinder when adjusting the shield tail cylinder, it only needs to align the pressing parts at the position to be adjusted. Therefore, the shield tail shaft docking and adjustment device of this application occupies little space and requires little space for operation. It can dock and adjust the shield tail cylinder in a timely and effective manner underground. Furthermore, it can also handle shield tail deformation during tunneling inside the tunnel, achieving rapid on-site repair and solving the technical problem that existing shield tail docking and adjustment cannot be carried out underground.

[0056] The technical solution of the application will be described in detail below with reference to the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0057] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, Figure 1 A schematic diagram of the structure of the shield tail docking adjustment device provided in the embodiments of this application; Figure 2 for Figure 1 A cross-sectional structural diagram in use; Figure 3 for Figure 1Schematic diagram of the central base; Figure 4 for Figure 1 A structural diagram from another angle; Figure 5 for Figure 1 A schematic diagram of the structure of the second wedge block.

[0058] In the embodiments of this application, reference is made to Figures 1 to 4 As shown, an embodiment of this application provides a shield tail shaft docking adjustment device, including a base 100, a sliding seat 200, an adjustment component 300, and a pressing member 400. The base 100 is used to be mounted on the middle shield cylinder, and a guide rail 500 is provided on the base 100. The sliding seat 200 is slidably mounted on the guide rail 500 so that the sliding seat 200 moves along the extension direction of the guide rail 500. The pressing member 400 is mounted on the sliding seat 200 through the adjustment component 300, and the adjustment component 300 is used to drive the pressing member 400 to move toward the shield tail cylinder 1400 so that the pressing member 400 presses the shield tail cylinder 1400.

[0059] The base 100 of the shield tail shaft docking adjustment device of this application is used to be installed on the middle shield body. Its installation method can be a fixed connection or a detachable connection, such as welding, snap-fit, or bolt connection. A guide rail 500 is provided on the base 100, and a sliding seat 200 is installed on the guide rail 500. The sliding seat 200 can move along the direction of the guide rail 500, thereby changing the position of the sliding seat 200.

[0060] The function of the pressing component 400 is to press the protruding parts of the shield tail cylinder 1400 that need to be adjusted. Specifically, for example, when the shield tail cylinder 1400 is partially concave, the pressing component 400 is placed inside the shield tail cylinder 1400 to facilitate pressing the concave parts. When the shield tail cylinder 1400 is partially convex, the pressing component 400 is placed outside the shield tail cylinder 1400 to facilitate pressing the convex parts.

[0061] The pressing drive component of the pressing member 400 is the adjustment assembly 300. The pressing member 400 is set on the sliding seat 200 through the adjustment assembly 300. The adjustment assembly 300 drives the pressing member 400 to move toward the shield tail cylinder 1400 so that the pressing member 400 presses the shield tail cylinder 1400. Because the pressing member 400 can move with the sliding seat 200, the pressing range of the pressing member 400 is wider, thereby improving the pressing range of the pressing member 400.

[0062] When using the shield tail shaft docking adjustment device of this application, first align the pressing member 400 with the adjustment part of the shield tail cylinder 1400 that needs to be adjusted; then fix the base 100 on the middle shield cylinder; finally operate the adjustment component 300, which drives the pressing member 400 to move toward the adjustment part, so that the pressing member 400 presses the adjustment part until the adjustment part is pressed to the docking position with the middle shield cylinder, thereby completing the roundness adjustment of the shield tail cylinder 1400 and realizing the docking of the shield tail cylinder 1400 with the middle shield cylinder.

[0063] Because the shield tail shaft docking adjustment device of this application sets the base 100 on the middle shield cylinder when adjusting the shield tail cylinder 1400, the middle shield cylinder can be used as a reference system, which facilitates more precise adjustment of the shield tail cylinder 1400 by the subsequent pressing component 400. Compared with adjusting only on the shield tail cylinder 1400, the shield tail shaft docking adjustment device of this application can use the middle shield cylinder as a reference system, making the adjustment of the shield tail cylinder 1400 more precise and improving the correction accuracy.

[0064] Furthermore, the shield tail shaft docking adjustment device of this application does not require additional space or to cover the entire shield tail cylinder 1400 when adjusting the shield tail cylinder 1400. It only needs to align the pressing part 400 at the position to be adjusted. Therefore, the shield tail shaft docking adjustment device of this application has a small footprint and requires little space for operation. It can effectively and promptly dock and adjust the shield tail cylinder 1400 underground. In addition, it can also handle shield tail deformation during tunneling, enabling rapid on-site repair and solving the technical problem that the existing shield tail docking adjustment cannot be carried out underground.

[0065] In other possible embodiments, a locking assembly 600 is also included, which is used to fix the sliding seat 200 to the guide rail 500. In this embodiment, by adding the locking assembly 600, when the pressing member 400 is aligned with the adjustment part of the shield tail cylinder 1400 that needs to be adjusted, the sliding seat 200 is locked by the locking assembly 600, thereby preventing the sliding seat 200 from moving and causing the pressing member 400 to shift. The locking assembly 600 can be a snap-fit ​​assembly or a bolt assembly, which can realize the locking and unlocking of the sliding seat 200.

[0066] In another embodiment, reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the base 100 has a groove to form a guide rail 500, and the sliding seat 200 has a protrusion 700 that matches the groove. In this embodiment, the guide rail 500 on the base 100 is a groove, and the sliding seat 200 has a protrusion 700 that matches the groove. The sliding seat 200 moves by sliding the protrusion 700 within the groove. It should be noted that the guide rail 500 can also be a groove, a slide rail, etc.

[0067] In one embodiment, the locking assembly 600 includes at least one connecting bolt 610, which includes a connecting screw and a connecting nut. A slotted through hole 800 is provided in the groove. The connecting screw passes sequentially through the sliding seat 200 and the slotted through hole 800, and connects with the connecting nut to fix the sliding seat 200 onto the groove. In this embodiment, the sliding seat 200 is fixed to the base 100 by the connecting bolt 610. When it is necessary to lock the sliding seat 200, the connecting bolt 610 is tightened; when it is necessary to move the sliding seat 200, the connecting bolt 610 is loosened.

[0068] In another possible embodiment, refer to Figure 1 and Figure 2 As shown, the adjustment assembly 300 includes at least one guide post 310 and at least one adjustment screw 320. The sliding seat 200 is provided with at least one guide through hole 900 and at least one threaded through hole 1000 that matches the adjustment screw 320. The axis of the guide through hole 900 is parallel to the axis of the threaded through hole 1000. The pressing member 400 has an opposing mounting end 410 and a pressing end 420. The pressing end 420 faces the shield tail cylinder 1400. The guide post 310 passes through the guide through hole 900 and connects to the mounting end 410. The adjustment screw 320 passes through the threaded through hole 1000 and abuts against the mounting end 410.

[0069] In this embodiment, the guide post 310 of the adjusting component 300 is used for guidance to prevent the pressing member 400 from shifting. In use, the pressing member 400 is first aligned with the part of the shield tail cylinder 1400 that needs to be adjusted, and then the adjusting screw 320 is turned so that the adjusting screw 320 applies force to the mounting end 410 of the pressing member 400. As a result, the pressing member 400 will move along the axial direction of the guide post 310, and the pressing end 420 of the pressing member 400 will press the part of the shield tail cylinder 1400 that needs to be adjusted, thereby realizing the adjustment of the shield tail cylinder 1400.

[0070] Specifically, the guide post 310 and the guide through hole 900 are matched to ensure that they can withstand a certain lateral impact force while guiding, that is, the radial impact force of the guide post 310, further preventing the pressing part 400 from deviating and improving the pressing accuracy of the pressing part 400.

[0071] The guide post 310 can be connected to the mounting end 410 through the guide through hole 900 by means of threaded connection, snap-fit, etc. Specifically, in this embodiment, a threaded connection is adopted, that is, a threaded hole is provided on the surface of the mounting end 410, and a thread is provided at the end of the guide post 310. After the guide post 310 passes through the guide through hole 900, it is threadedly connected to the threaded hole of the mounting end 410.

[0072] In other possible embodiments, refer to Figure 1 and Figure 2 As shown, there are two guide through holes 900, and a threaded through hole 1000 is located between the two guide through holes 900. In this embodiment, by placing the threaded through hole 1000 between the two guide through holes 900, the force on the pressing member 400 is more even, further preventing the pressing member 400 from shifting, and improving the accuracy of the pressing direction of the pressing member 400.

[0073] In another possible embodiment, a first wedge 1100 and a second wedge 1200 are also included. The pressing end 420 is a V-shaped surface, which includes a tip, a first inclined surface, and a second inclined surface. The first wedge 1100 is used to abut against the first inclined surface and the tail cylinder 1400, and the second wedge 1200 is used to abut against the second inclined surface and the tail cylinder 1400.

[0074] In this embodiment, the pressing element 400 can be a pressing head, and the pressing end 420 is a V-shaped surface. The tip of the V-shaped surface is aligned with the part that needs to be adjusted, making the pressing more precise and the force applied during adjustment more concentrated. When it is necessary to further fine-tune the distance of the deformation position to control the amount of deformation and the curvature of the cylinder wall, the first wedge 1100 is placed between the first inclined surface and the shield tail cylinder 1400, and the second wedge 1200 is placed between the second inclined surface and the shield tail cylinder 1400, thereby increasing the adjustment area and facilitating the adjustment of the cylinder wall curvature.

[0075] Specifically, refer to Figure 5 As shown, both the first wedge 1100 and the second wedge 1200 are provided with guide grooves 1500. The pressing end 420 contacts the bottom surface of the guide groove 1500, and the inclination angle of the contact surface is less than the friction angle of the material, thus achieving self-locking. During adjustment, the first wedge 1100 and the second wedge 1200 are placed between the pressing end 420 and the shield tail cylinder 1400. Due to the limiting effect of the guide groove 1500, continuous striking of the large end of the first wedge 1100 and the second wedge 1200 will cause them to move in a straight line along the inclined surface of the guide groove 1500 and squeeze into the gap, thereby generating extrusion force on the shield tail cylinder wall, further fine-tuning the shape of misaligned or deformed positions, and ensuring that the cylinder wall curvature meets the requirements.

[0076] Furthermore, refer to Figure 1 , Figure 2 and Figure 4 As shown, the adjustment assembly 300 also includes a locking nut 330 for locking the adjustment screw 320. The locking nut 330 is matched with the adjustment screw 320. When the adjustment screw 320 is adjusted to the specified position, the locking nut 330 is tightened. The locking nut 330 abuts against the end face of the sliding seat 200 away from the pressing member 400, thereby fixing the adjustment screw 320. This facilitates the insertion of the first wedge 1100 and the second wedge 1200, preventing the adjustment screw 320 from shifting, and allowing the first wedge 1100 and the second wedge 1200 to abut between the sliding seat 200 and the pressing member 400.

[0077] In another embodiment, a pad 1300 is also included, which is disposed between the sliding seat 200 and the pressing member 400. In this embodiment, when using the first wedge 1100 and the second wedge 1200, the pad 1300 is disposed between the sliding seat 200 and the pressing member 400, thereby avoiding damage to the adjusting assembly 300 and the adjusting screw 320. At this time, the sliding seat 200, the pad 1300 and the pressing member 400 abut against each other in sequence, which improves the service life of the adjusting assembly 300.

[0078] In other embodiments, the base 100 includes a base 110 and stiffening plates 120. Guide rails 500 and stiffening plates 120 are respectively disposed on two opposite surfaces of the base 110. The stiffening plates 120 are used for welding to the shield cylinder. In this embodiment, the stiffening plates 120 are welded to the inner or outer wall of the shield for fixation. After the operation is completed, the device can be disassembled simply by cutting off the weld joint between the low-cost stiffening plates 120 and the cylinder wall. This allows the main structure to be reused multiple times, reducing wear and tear costs, and enabling multiple workstations to operate simultaneously as needed, thus improving work efficiency.

[0079] The second aspect of this application provides a method for adjusting the docking of the shield tail shaft. Using the aforementioned shield machine shield tail shaft docking adjustment device, the method includes: aligning the pressing member 400 with the adjustment part of the shield tail cylinder 1400; fixing the base 100 on the middle shield cylinder; driving the adjustment assembly 300 to move the pressing member 400 toward the adjustment part, so that the pressing member 400 presses the adjustment part until the adjustment part is pressed to the docking position with the middle shield cylinder.

[0080] Because the shield tail shaft docking adjustment method of this application uses the shield machine shield tail shaft docking adjustment device of this application to adjust the shield tail cylinder 1400, during the adjustment, the base 100 is set on the middle shield cylinder, so that the middle shield cylinder can be used as a reference system, which makes it easier for the subsequent pressing part 400 to adjust the shield tail cylinder 1400 more accurately. Compared with adjusting only on the shield tail cylinder 1400, the shield tail shaft docking adjustment method of this application can use the middle shield cylinder as a reference system, making the adjustment of the shield tail cylinder 1400 more accurate and improving the correction accuracy.

[0081] Furthermore, the shield tail shaft docking and adjustment method of this application does not require additional space or to cover the entire shield tail cylinder 1400. It only requires aligning the pressing part 400 at the position to be adjusted. Therefore, the shield machine shield tail shaft docking and adjustment device of this application occupies little space and requires little space for operation. It can dock and adjust the shield tail cylinder 1400 in a timely and effective manner underground. In addition, it can also handle shield tail deformation during tunneling, enabling rapid on-site repair and solving the technical problem that the existing shield machine shield tail docking and adjustment cannot be carried out underground.

[0082] Specifically, for deformed areas of the shield tail, in addition to mechanical shaping, flame straightening should be used to eliminate stress at the deformation site and prevent springback. In particular, to ensure the axial alignment accuracy and effectiveness of the shield tail cylinder 1400 and the middle shield cylinder, multiple workstations should be selected for simultaneous operation, and no fewer than three adjustment devices should be used during each assembly.

[0083] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0084] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A shield tail shaft docking and adjustment device for a tunnel boring machine, characterized in that, It includes a base (100), a sliding seat (200), an adjustment assembly (300), and a pressing element (400); The base (100) is used to be mounted on the central shield cylinder, and the base (100) is provided with a guide rail (500). The sliding seat (200) is slidably disposed on the guide rail (500) so that the sliding seat (200) slides along the extension direction of the guide rail (500); The pressing member (400) is disposed on the sliding seat (200) by the adjusting component (300). The adjusting component (300) is used to drive the pressing member (400) to move toward the shield tail cylinder (1400) so that the pressing member (400) presses the shield tail cylinder (1400). The adjusting assembly (300) includes at least one guide post (310) and at least one adjusting screw (320). The sliding seat (200) is provided with at least one guide through hole (900) and at least one threaded through hole (1000) that matches the adjusting screw (320). The axis of the guide through hole (900) is parallel to the axis of the threaded through hole (1000). The pressing member (400) has an opposing mounting end (410) and a pressing end (420), the pressing end (420) facing the shield tail cylinder (1400), the guide post (310) passing through the guide through hole (900) and connected to the mounting end (410), and the adjusting screw (320) passing through the threaded through hole (1000) and abutting against the mounting end (410).

2. The shield tail shaft docking adjustment device for a tunnel boring machine according to claim 1, characterized in that, It also includes a locking assembly (600) for securing the sliding seat (200) to the guide rail (500).

3. The shield tail shaft docking adjustment device for a tunnel boring machine according to claim 2, characterized in that, The base (100) is provided with a groove to form the guide rail (500), and the sliding seat (200) is provided with a protrusion (700) that matches the groove.

4. The shield tail shaft docking adjustment device for a tunnel boring machine according to claim 3, characterized in that, The locking assembly (600) includes at least one connecting bolt (610), the connecting bolt (610) includes a connecting screw and a connecting nut, the groove is provided with a waist-shaped through hole (800), the connecting screw passes through the sliding seat (200) and the waist-shaped through hole (800) in sequence, and is connected to the connecting nut to fix the sliding seat (200) on the groove.

5. The shield tail shaft docking adjustment device for a tunnel boring machine according to claim 1, characterized in that, There are two guide holes (900), and the threaded through hole (1000) is located between the two guide holes (900).

6. The shield tail shaft docking adjustment device for a tunnel boring machine according to claim 1, characterized in that, It also includes a first wedge (1100) and a second wedge (1200). The pressing end (420) is a V-shaped surface, which includes a tip, a first inclined surface and a second inclined surface. The first wedge (1100) is used to abut between the first inclined surface and the shield tail cylinder (1400), and the second wedge (1200) is used to abut between the second inclined surface and the shield tail cylinder (1400).

7. The shield tail shaft docking adjustment device for a tunnel boring machine according to claim 6, characterized in that, It also includes a pad (1300) disposed between the slide seat (200) and the pressing member (400).

8. The shield tail shaft docking adjustment device for a tunnel boring machine according to claim 1, characterized in that, The base (100) includes a base (110) and a stiffening plate (120). The guide rail (500) and the stiffening plate (120) are respectively disposed on two opposite surfaces of the base (110). The stiffening plate (120) is used for welding to the middle shield cylinder.

9. A method for adjusting the docking of a shield tail shaft in underground drilling, characterized in that, Using the shield tail shaft docking adjustment device as described in any one of claims 1 to 8, the method comprises: Align the pressing member (400) with the adjustment part of the shield tail cylinder (1400); The base (100) is fixed to the central shield cylinder; Drive the adjustment component (300) to move the pressing member (400) toward the adjustment part, so that the pressing member (400) presses the adjustment part until the adjustment part is pressed to the docking position with the middle shield cylinder.

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