A device for connecting large-diameter shield machine trolley misalignment

Abstract

The utility model discloses a device for large diameter shield machine trolley misplacement connection relates to shield construction equipment technical field, include: base, stand, set up in the base top one end, and stand is provided with a plurality of, the connecting frame is set up in the top one end lateral wall of a plurality of stands, the inclined brace is set up in the top other end of a plurality of stands, and is connected with the top other end of stand, the connecting lug, the symmetry is set up in one end lateral wall of connecting frame, the reinforcing rib board, the symmetry is set up in both sides of connecting lug, the connecting component, the top end of inserting setting in connecting lug. The utility model discloses rational and reliable, easy operation can realize the huge horizontal tension and bending moment of trolley connecting place can be evenly transmitted to the base, effectively avoid stress concentration, guarantee the safe and reliable connection under the misplacement working condition to strengthen the rigidity and stability of the device for large diameter shield machine trolley misplacement connection.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling equipment technology, and more specifically, to a device for misaligned connection of a large-diameter shield tunneling machine trolley. Background Technology

[0002] During the construction of large-diameter shield tunnels, the connection of the trolley system under complex track conditions faces severe technical challenges. Due to the extreme longitudinal slope of the track, with a maximum gradient of 60‰ and local cliff-like step drops of up to 2.8 meters, significant height differences and longitudinal misalignments occur between adjacent trolley sections. Traditional rigid linkage mechanisms are unable to achieve effective docking and adapt to such drastic attitude changes. Each trolley section weighs over 200 tons and must overcome not only enormous running resistance and friction during tunneling but also the intense bending and torsional loads generated by curved sections. Ordinary connecting components are highly susceptible to plastic deformation or fatigue failure.

[0003] Therefore, there is an urgent need for a device for the misalignment connection of tunnel boring machine (TBM) trolleys. This device must possess extremely high structural strength, impact resistance, and good fatigue resistance, while integrating an articulated or hydraulic adjustment mechanism to achieve flexible and adaptive adjustment in both vertical and horizontal directions. Its core function is to compensate for misalignment and deflection between the trolleys, ensuring a reliable connection even under extreme stress conditions, thereby guaranteeing the stability and construction safety of the entire machine during tunneling.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a device for misaligned connection of large-diameter tunnel boring machine trolleys, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows: A device for staggered connection of a large-diameter tunnel boring machine trolley includes: a base; columns disposed at one top end of the base; and a plurality of columns; a connecting frame disposed on one side wall of the top end of the plurality of columns; diagonal braces disposed at the other top end of the plurality of columns and connected to the other top end of the columns; connecting lugs symmetrically disposed on one side wall of the connecting frame; reinforcing ribs symmetrically disposed on both sides of the connecting lugs; and connecting components inserted into the top of the connecting lugs.

[0007] Furthermore, to enable rapid connection and disassembly between the trolleys using the connecting assembly, compared to traditional connecting pins for installation and disassembly, this improves the connection and disassembly efficiency of the device for misaligned connection of large-diameter tunnel boring machine trolleys, and has wider applicability. The connecting assembly includes a first lifting lug hole at the top of one of the connecting lugs, a driving component located at the top of the first lifting lug hole, and fixing components at both ends of the bottom of the driving component; a second lifting lug hole is provided at the top of the other connecting lug. Both ends of the two lifting lug holes are provided with limiting grooves that mate with the fixing components. The driving component includes a limiting plate located at the top of the first lifting lug hole. A sleeve located inside the first lifting lug hole is fitted inside the limiting plate. A button is provided at the top of the sleeve. The bottom end of the button is connected to a first movable rod. A first limiting ring is fitted on the outer side of the middle circumference of the first movable rod. A second limiting ring that mates with the top end of the first limiting ring is provided on the top inner wall of the sleeve. A first spring is fitted on the outer side of the first movable rod and at the bottom end of the first limiting ring. A spring that mates with the first spring is provided on the bottom inner wall of the sleeve. A third limiting ring is fitted at the bottom end. The bottom end of the first movable rod passes through the interior of the third limiting ring and connects to a limiting ring. The inner side of the limiting ring has a first inclined surface. A fourth limiting ring, which mates with the limiting ring, is fitted on the outer side of the bottom circumference of the first movable rod and near the bottom end of the sleeve. A flying saucer ring, which mates with the limiting ring, is fitted on the outer side of the bottom circumference of the first movable rod and away from the fourth limiting ring. A second inclined surface is formed on the outer top of the flying saucer ring. A third inclined surface, which mates with the first inclined surface, is formed on the outer bottom of the flying saucer ring. The flying saucer ring is movably fitted on the first... On the outer circumference of the bottom of the movable rod, the fixing component includes a fifth limiting ring set inside the limiting groove. A second movable rod is provided through one end of the side wall of the fifth limiting ring. A limiting protrusion is connected to one end of the second movable rod away from the fifth limiting ring. A second spring is sleeved on the outer circumference of the second movable rod between the fifth limiting ring and the limiting protrusion. A fourth inclined surface that cooperates with the third inclined surface is opened at one end of the fifth limiting ring near the flying saucer ring. The second movable rod and the fifth limiting ring are movably connected, and the fifth limiting ring is fixedly connected to the inner wall of the limiting groove.

[0008] Furthermore, in order to achieve the uniform transfer of the huge horizontal tensile force and bending moment at the trolley connection to the base under the action of the formed triangular structure, effectively avoid stress concentration, and ensure a safe and reliable connection under misalignment conditions, thereby enhancing the rigidity and stability of the device for misalignment connection of large-diameter shield machine trolleys, a triangular structure is formed between the base, the column, the connecting frame and the diagonal brace.

[0009] The beneficial effects of this utility model are as follows: 1. This utility model has a reasonable and reliable structure and is easy to operate. Through the combined action of the base, column, connecting frame, diagonal brace, connecting lug, reinforcing rib, and connecting components, it can quickly connect and disassemble the trolleys. Compared with the traditional installation and disassembly using connecting pins, it can improve the connection and disassembly efficiency of the device for misaligned connection of large-diameter shield machine trolleys, and has a wider applicability. It can also evenly transfer the huge horizontal tensile force and bending moment at the trolley connection to the base, effectively avoid stress concentration, ensure safe and reliable connection under misalignment conditions, and thus enhance the rigidity and stability of the device for misaligned connection of large-diameter shield machine trolleys.

[0010] 2. By setting up connecting components, the trolleys can be quickly connected and disassembled. Compared with the traditional connecting pins for installation and disassembly, this improves the connection and disassembly efficiency of the device used for misaligned connection of large-diameter tunnel boring machine trolleys and has wider applicability.

[0011] 3. Through the action of the formed triangular structure, the huge horizontal tensile force and bending moment at the trolley connection can be evenly transferred to the base, effectively avoiding stress concentration and ensuring a safe and reliable connection under misalignment conditions, thereby enhancing the rigidity and stability of the device used for misalignment connection of large-diameter shield machine trolleys. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a perspective view of a device for misaligned connection of a large-diameter tunnel boring machine trolley according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of a device for misaligned connection of a large-diameter tunnel boring machine trolley according to an embodiment of the present utility model; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is another perspective view of a device for misaligned connection of a large-diameter tunnel boring machine trolley according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the connecting components in a device for misaligned connection of a large-diameter tunnel boring machine trolley according to an embodiment of the present utility model; Figure 6This is a cross-sectional view of a connecting component in a device for misaligned connection of a large-diameter tunnel boring machine trolley according to an embodiment of the present invention.

[0014] In the picture: 1. Base; 2. Column; 3. Connecting frame; 4. Diagonal brace; 5. Connecting lug; 6. Reinforcing rib; 7. Connecting assembly; 701. First lug hole; 702. Drive component; 7021. Limiting plate; 7022. Sleeve; 7023. Button; 7024. First movable rod; 7025. First limiting ring; 7026. Second limiting ring; 7027. First spring; 7028. Third limiting ring; 7029. 70210. Limiting ring; 70211. First inclined surface; 70212. Fourth limiting ring; 70213. Flying saucer ring; 70214. Second inclined surface; 70215. Third inclined surface; 703. Fixing component; 7031. Fifth limiting ring; 7032. Second movable rod; 7033. Limiting protrusion; 7034. Second spring; 7035. Fourth inclined surface; 704. Second lifting lug hole; 705. Limiting groove. Detailed Implementation

[0015] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0016] According to an embodiment of the present invention, a device for misaligned connection of a large-diameter tunnel boring machine trolley is provided.

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-6 As shown, the device for misaligned connection of a large-diameter shield tunneling machine trolley according to an embodiment of the present invention includes: a base 1; columns 2, disposed at one top end of the base 1; and a plurality of columns 2 are provided; a connecting frame 3, disposed on the side wall of one top end of the plurality of columns 2; a diagonal brace 4, disposed at the other top end of the plurality of columns 2 and connected to the other top end of the columns 2; connecting lugs 5, symmetrically disposed on one side wall of the connecting frame 3; reinforcing ribs 6, symmetrically disposed on both sides of the connecting lugs 5; and a connecting assembly 7, inserted through the top end of the connecting lugs 5.

[0018] Specifically, the base 1 is a square box structure welded from 30mm steel plates, with two steel plates welded inside to increase the tensile strength of the base 1. The bottom of the column 2 is welded to the base box (i.e., base 1) near the trolley connection side as a 300mm I-beam. The top of the column 2 is connected to the other end of the base box via a 300mm I-beam diagonal brace (i.e., diagonal brace 4). This allows the horizontal tension on the connecting frame 3 to be applied to the base 1 more evenly by the column 2 and diagonal brace 4. Furthermore, a stable triangular structure is formed between the connecting frame 3, the column 2, the diagonal brace 4, and the base 1, greatly ensuring the stability of the structure. The top of the connecting frame 3 is welded from 400mm I-beams, with the end face welded to the connecting lug 5. Reinforcing ribs 6 are also welded to the side of the connecting lug 5 to ensure the tensile strength and stress requirements of the connecting lug 5. The connecting lug 5 is connected to the rear trolley via the connecting assembly 7.

[0019] In one embodiment, the connecting component 7 includes a first lug hole 701 at the top of one of the connecting lugs 5, a driving member 702 disposed at the top of the first lug hole 701, and fixing members 703 disposed at both ends of the bottom of the driving member 702; the other connecting lug 5 has a second lug hole 704 at its top, and limiting grooves 705 that cooperate with the fixing members 703 are disposed at both ends of the second lug hole 704. The driving member 702 includes a first lug hole 704 at the top of the first lug hole 701. The limiting plate 7021 at the end has a sleeve 7022 inside the first lifting lug hole 701. A button 7023 is located at the top inner part of the sleeve 7022. A first movable rod 7024 is connected to the bottom end of the button 7023. A first limiting ring 7025 is fitted around the outer circumference of the middle part of the first movable rod 7024. A second limiting ring 7026, which mates with the top end of the first limiting ring 7025, is provided on the inner top wall of the sleeve 7022. A first spring is fitted around the outer circumference of the first movable rod 7024 and at the bottom end of the first limiting ring 7025. The bottom inner wall of the spring 7027 and sleeve 7022 is provided with a third limiting ring 7028 that mates with the bottom end of the first spring 7027. The bottom end of the first movable rod 7024 passes through the interior of the third limiting ring 7028 and is connected to a limiting ring 7029. The inner side of the limiting ring 7029 is provided with a first inclined surface 70210. The bottom outer circumference of the first movable rod 7024 and the bottom end of the sleeve 7022 are fitted with a fourth limiting ring 70211 that mates with the limiting ring 7029. The bottom outer circumference of the first movable rod 7024 and the outer end away from the fourth limiting ring 70211 are provided with a third limiting ring 7028 that mates with the limiting ring 7029. The bottom end of 211 is fitted with a flying saucer ring 70212 that cooperates with the limiting ring 7029. The top outer side of the flying saucer ring 70212 is provided with a second inclined surface 70213. The bottom outer side of the flying saucer ring 70212 is provided with a third inclined surface 70214 that cooperates with the first inclined surface 70210. The flying saucer ring 70212 is movably fitted on the outer circumference of the bottom of the first movable rod 7024. The fixing member 703 includes a fifth limiting ring 7031 provided inside the limiting groove 705. The second movable rod 7032 is provided through the side wall of one end of the fifth limiting ring 7031.One end of the second movable rod 7032, away from the fifth limiting ring 7031, is connected to a limiting protrusion 7033. A second spring 7034 is sleeved on the outer circumference of the second movable rod 7032, between the fifth limiting ring 7031 and the limiting protrusion 7033. One end of the fifth limiting ring 7031, near the flying saucer ring 70212, has a fourth inclined surface 7035 that mates with the third inclined surface 70214. The second movable rod 7032 and the fifth limiting ring 7031 are movably connected, and the fifth limiting ring 7031 is fixedly connected to the inner wall of the limiting groove 705. This allows for rapid connection and disassembly of the trolleys under the action of the connecting assembly 7. Compared to using traditional connecting pins for installation and disassembly, this improves the connection and disassembly efficiency of the device for misaligned connection of large-diameter shield machine trolleys and has wider applicability.

[0020] The specific working principle of the connecting component 7 is as follows: When connecting the trolley, firstly, insert the corresponding lifting lug on the rear section of the trolley between the two connecting lifting lugs 5, aligning the second lifting lug hole 704 with the first lifting lug hole 701. Then, insert the sleeve 7022 into the aligned lifting lug hole. During the downward pressing process, the limiting ring 7029 in the sleeve 7022 moves downward together with the flying saucer ring 70212, and the third inclined surface 70214 at the bottom of the flying saucer ring 70212 presses the two sets of limiting protrusions 7033 in the fixing member 703 to expand outward. As the flying saucer ring 70212 continues to press down, its bottom third inclined surface 70214 and the first inclined surface 70210 at the top of the limiting ring 7029 gradually misalign and engage, and under the bidirectional compression, the limiting protrusions 7033 are pressed outward. Once the UFO ring 70212 has completely passed the limiting protrusion 7033, the limiting protrusion 7033 quickly resets under the rebound action of the second spring 7034, automatically engaging with the second inclined surface 70213 on the side wall of the UFO ring 70212, forming a stable engagement. At this time, the first movable rod 7024 rebounds, and the button 7023 resets, completing the quick and rigid connection of the two sections of the platform workshop. No additional tools are required, and it features fast, efficient, and safe installation. When disassembly is required, first press the button 7023 to move the first movable rod 7024 vertically along the sleeve 7022 towards the cavity. Under the movement of the first movable rod 7024, the first limiting ring 7025 is driven to compress the first spring 7027, while simultaneously driving the fourth limiting ring 70211 to move closer to the fixing member 703. Under the movement of the fourth limiting ring 70211, the flying saucer ring 70212 is driven to contact the limiting protrusion 7033 in the fixing member 703. With the cooperation of the third inclined surface 70214 and the fourth inclined surface 7035, the fourth limiting ring 70211 continues to be pressed downward by the first movable rod 7024, and the fourth limiting ring 70211 continues to press the flying saucer ring 70212 downward. During the pressing process, the two sets of limiting protrusions 7033 are continuously pressed by the flying saucer ring 70212, causing the two sets of limiting protrusions 7033 to move away from each other. When the flying saucer ring 70212 moves away from the two sets of limiting protrusions 7033, it continues to move downward. At this time, under the rebound action of the second spring 7034, the inner side of the limiting protrusion 7033 contacts the second inclined surface 70213. Subsequently, the third inclined surface 70214 at the bottom of the UFO ring 70212 comes into contact with the first inclined surface 70210 at the top of the limiting ring 7029, at which point the sleeve 7022 can be pulled out from the lifting lug hole to achieve rapid separation.

[0021] In one embodiment, for the aforementioned base 1, column 2, connecting frame 3, and diagonal brace 4, a triangular structure is formed between the base 1, column 2, connecting frame 3, and diagonal brace 4. Under the action of the formed triangular structure, the huge horizontal tensile force and bending moment at the trolley connection can be evenly transmitted to the base 1, effectively avoiding stress concentration and ensuring a safe and reliable connection under misalignment conditions, thereby enhancing the rigidity and stability of the device used for misalignment connection of large-diameter shield machine trolleys.

[0022] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0023] In practical applications, the bottom of the base 1 of this utility model is welded to the trolley structure, with a 30mm thick steel plate attached in the middle to increase the contact area for stress. The top of the base 1 is welded to the connecting frame 3, raising the connecting frame 3 by 990mm. Combined with the height of the connecting frame 3 itself (1120mm), this allows the front section of the shield machine trolley to be connected to the rear section of the trolley via the entire device for misaligned connection of large-diameter shield machine trolleys. The connecting lug 5 of the device for misaligned connection of large-diameter shield machine trolleys is hinged to the corresponding lug on the rear section of the trolley through the connecting component 7, thereby completing the initial flexible connection between the two misaligned trolley sections. After the connection is completed, as the shield machine advances, the thrust of the propulsion cylinder pushes the shield body and the subsequent trolley forward, and the traction force between the front and rear trolley sections is transmitted through this utility model. When the trolley enters a turning section, the connecting lug 5 rotates around the pin of the connecting component 7 to form an angle, adaptively completing the steering. When entering a downhill section or encountering steps that cause misalignment, the connecting lug 5 generates a suitable vertical displacement within the gap of the connecting component 7 to ensure uniform force distribution. The huge horizontal tensile force and bending moment acting on the connecting lug 5 are transmitted through the connecting frame 3, and then the triangular support structure formed by the column 2 and the diagonal brace 4 evenly distributes the load to the base 1 and the entire trolley frame. This process, through the combination of rigid structural support and flexible adjustment of the hinge points, effectively adapts to the relative positional changes between the trolleys, balances the load, avoids stress concentration, ensures stable force transmission under complex working conditions such as jacking, turning, and downhill, prevents trolley structural deformation, and ensures safe and reliable connection.

[0024] In summary, thanks to the above-mentioned technical solution of this utility model, the degree of freedom between the connecting component 7 and the connecting lug 5 allows this utility model to easily cope with different horizontal misalignments during shield tunneling turns and vertical misalignments of the trolley when the shield machine moves on steep slopes and stepped sections. Whether it's a small deviation or a large angle of misalignment, reliable connection can be achieved, greatly expanding the applicability of the trolley in complex operating environments and providing the possibility for the overall initial excavation of the shield machine under various special working conditions. It possesses excellent safety and reliability; the robust structural design and the original trolley's frame structure are tightly welded, ensuring the integrity of the trolley structure. The front and rear connecting devices fit tightly together, ensuring reliable connection regardless of whether the tunneling... Whether it's the impact during the excavation process or the shaking and bumps during operation, this utility model ensures the stability of the connection, effectively reducing the risk of various safety accidents caused by weak connections during tunneling, and providing a solid guarantee for the safety of personnel and equipment. With broad versatility, this utility model fully considers the connection needs of different types and specifications of trolleys in its design, and utilizes readily available materials from the construction site for welding and fabrication. Its structural dimensions and connection interfaces can be planned and adjusted in advance during processing, eliminating the need for extensive and complex customization for different trolleys. Simple adjustments are all that's needed to achieve effective connection with various trolleys, greatly improving the economic efficiency and flexibility of the device.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for misaligned connection of a large-diameter tunnel boring machine trolley, characterized in that, include: Base (1); A column (2) is provided at one end of the top of the base (1); and there are several columns (2); A connecting frame (3) is provided on the top side wall of one end of several of the columns (2); Diagonal bracing (4) is provided at the other end of the top of several columns (2) and is connected to the other end of the top of the columns (2); Connecting lugs (5) are symmetrically arranged on one end side wall of the connecting frame (3); Reinforcing ribs (6) are symmetrically arranged on both sides of the connecting lugs (5); The connecting component (7) is interspersed at the top of the connecting lug (5).

2. The device for misaligned connection of a large-diameter tunnel boring machine trolley according to claim 1, characterized in that, The connecting component (7) includes a first lug hole (701) opened at the top of one of the connecting lugs (5), and a driving member (702) is provided at the top of one of the connecting lugs (5) and inside the first lug hole (701). Both ends of the bottom of the driving member (702) are fitted with fixing members (703). One of the connecting lugs (5) has a second lug hole (704) at its top end, and both ends of the second lug hole (704) have limiting grooves (705) that cooperate with the fixing member (703).

3. The device for misaligned connection of a large-diameter tunnel boring machine trolley according to claim 2, characterized in that, The driving component (702) includes a limiting plate (7021) disposed at the top of the first lifting lug hole (701). A sleeve (7022) located inside the first lifting lug hole (701) is sleeved inside the limiting plate (7021). A button (7023) is disposed at the top inner side of the sleeve (7022). A first movable rod (7024) is connected to the bottom end of the button (7023). A first limiting ring (7025) is sleeved on the outer side of the middle circumference of the first movable rod (7024).

4. The device for misaligned connection of a large-diameter tunnel boring machine trolley according to claim 3, characterized in that, The top inner wall of the sleeve (7022) is provided with a second limiting ring (7026) that cooperates with the top of the first limiting ring (7025). A first spring (7027) is sleeved on the outer circumference of the first movable rod (7024) and at the bottom end of the first limiting ring (7025). The bottom inner wall of the sleeve (7022) is provided with a third limiting ring (7028) that cooperates with the bottom end of the first spring (7027).

5. The device for misaligned connection of a large-diameter tunnel boring machine trolley according to claim 4, characterized in that, The bottom end of the first movable rod (7024) passes through the inside of the third limiting ring (7028) and is connected to a limiting ring (7029). The inner side of the limiting ring (7029) is provided with a first inclined surface (70210). A fourth limiting ring (70211) that cooperates with the limiting ring (7029) is sleeved on the outer side of the bottom circumference of the first movable rod (7024) and near the bottom end of the sleeve (7022).

6. The device for misaligned connection of a large-diameter tunnel boring machine trolley according to claim 5, characterized in that, The bottom outer circumference of the first movable rod (7024) and the bottom end away from the fourth limiting ring (70211) are fitted with a flying saucer ring (70212) that cooperates with the limiting ring (7029). The top outer side of the flying saucer ring (70212) is provided with a second inclined surface (70213). The bottom outer side of the flying saucer ring (70212) is provided with a third inclined surface (70214) that cooperates with the first inclined surface (70210), and the flying saucer ring (70212) is movably sleeved on the outer circumference of the bottom of the first movable rod (7024).

7. The device for misaligned connection of a large-diameter tunnel boring machine trolley according to claim 6, characterized in that, The fixing member (703) includes a fifth limiting ring (7031) disposed inside the limiting groove (705), and a second movable rod (7032) is provided through one end sidewall of the fifth limiting ring (7031). One end of the second movable rod (7032) and the end away from the fifth limiting ring (7031) is connected to a limiting protrusion (7033). A second spring (7034) is sleeved on the outer circumference of the second movable rod (7032) and between the fifth limiting ring (7031) and the limiting protrusion (7033).

8. The device for misaligned connection of a large-diameter tunnel boring machine trolley according to claim 7, characterized in that, One end of the fifth limiting ring (7031) and the end near the flying saucer ring (70212) is provided with a fourth inclined surface (7035) that cooperates with the third inclined surface (70214), and the second movable rod (7032) is movably connected to the fifth limiting ring (7031), and the fifth limiting ring (7031) is fixedly connected to the inner wall of the limiting groove (705).

9. The device for misaligned connection of a large-diameter tunnel boring machine trolley according to claim 1, characterized in that, The base (1) forms a triangular structure with the column (2), the connecting frame (3) and the diagonal brace (4).

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