Shield flight launching stand

Abstract

The application discloses a shield flight starting frame and belongs to the field of shield machine starting frames. The shield flight starting frame comprises a supporting system, a walking system and a guiding system. The supporting system is used for fixing the shield machine and comprises a bracket, an annular frame beam and a support pipe. The walking system is used for providing power for the walking of the shield machine and comprises an upper anchor, a lower anchor, a plurality of steel strands, a continuous jack and a rear support ring. The guiding system is used for limiting the walking route of the shield machine and comprises a portal ring, a circular ring and a guide wheel. The portal ring of the shield flight starting frame has the same inner diameter size as a pre-buried tempered ring on a portal, so that the shield machine can smoothly enter the portal during starting. Meanwhile, the bracket is obliquely arranged, so that the shield machine can be effectively pushed to the portal and the effect of the continuous jack is reduced, and the shield machine is better excavated. The circular ring has the same size as a negative ring segment, so that a stress plane for installing the negative ring segment is provided and the balance of the stress of an oil cylinder is ensured. The guide wheel is used for driving the shield machine to move forward, and rolling friction can effectively reduce the frictional resistance. Meanwhile, the portal ring can provide a guiding effect.

Description

Technical Field

[0001] This invention belongs to the field of tunnel boring machine launching frames, and more specifically, relates to tunnel boring machine flight launching frames. Background Technology

[0002] A tunnel boring machine (TBM) is a type of tunnel boring machine that uses the shield tunneling method. The TBM construction method involves the TBM simultaneously excavating and laying the tunnel's "shield" (referring to supporting segments). It employs the shield tunneling method for excavation and construction of tunnels, primarily used for the excavation and construction of underground tunnels. Its shape resembles a giant cylinder, consisting of a cutting head at the front and a propulsion system at the rear. The TBM's cutting head is equipped with cutting tools and a tunneling shield, which can cut and excavate in the underground soil layers. Simultaneously, the propulsion system propels the cutting head forward, completing the tunnel excavation.

[0003] Currently, most tunnel boring machine (TBM) launchers use sliding friction to propel the TBM forward. However, sliding friction has high frictional resistance, which can easily cause wear and tear on parts, leading to frequent replacements and increased maintenance costs. Summary of the Invention

[0004] The main objective of this invention is to provide a shield tunneling launch platform that uses rolling friction to reduce frictional resistance, while also providing guidance and reducing maintenance costs.

[0005] According to a first aspect of the present invention, a shield tunneling launcher is provided, comprising:

[0006] A support system for securing a tunnel boring machine (TBM) includes a bracket, an annular frame beam, and a support pipe. The annular frame beam is fixedly connected to the concrete of the launching portal. The bottom of the annular frame beam is fixedly connected to the launching shaft bottom plate. One end of the support pipe is fixedly connected to the annular frame beam, and the other end of the support pipe is fixedly connected to the wall. The bracket is inclined at the bottom of the annular frame beam to form a downhill launching mechanism.

[0007] The walking system, used to provide power for the tunnel boring machine to move, includes an upper anchor, a lower anchor, several steel strands, a continuous jack, and a rear support ring. The rear support ring is movably mounted on the end of the bracket away from the annular frame beam. The continuous jack is fixedly mounted on the rear support ring. The upper anchor is fixedly mounted on the annular frame beam. The lower anchor is fixedly mounted on the continuous jack. The two ends of the several steel strands are respectively connected to the upper anchor and the lower anchor.

[0008] The guiding system, used to limit the travel path of the tunnel boring machine, includes a portal ring, a circular ring, and guide wheels. The portal ring is fixedly connected to the end of the annular frame beam away from the concrete. The circular ring is connected to the rear support ring. The guide wheels are fixedly installed at the bottom of the rear support ring and are movably mounted on the bracket, allowing them to move back and forth along the length of the bracket.

[0009] According to a first aspect of the present invention, the shield tunneling launch frame includes two first connecting members and a plurality of second connecting members. The two first connecting members are inclined toward the direction of the annular frame beam. The two first connecting members are fixedly connected by the plurality of second connecting members. Each of the two first connecting members is provided with a guide rail, and the guide wheel is movably disposed on the guide rail.

[0010] According to the shield tunneling launch frame of the first aspect of the present invention, the guide wheel includes a connecting bracket and a roller. The roller is rotatably mounted on the connecting bracket, and the connecting bracket is fixedly installed at the bottom of the rear support ring. The roller has a recess that cooperates with the guide rail. The width of the recess is greater than the width of the guide rail to prevent the roller from deviating when rolling.

[0011] According to the shield tunneling launch frame of the first aspect of the present invention, the rear support ring is provided with four evenly distributed connecting protrusions on its outer side. The connecting protrusions are fixedly connected to the continuous jack, and one end of a plurality of steel strands passes through the connecting protrusions and is fixedly connected to the lower anchor on the continuous jack.

[0012] According to the shield tunneling launch frame of the first aspect of the present invention, the continuous jack is provided with a flange plate, the flange plate is provided with a plurality of evenly distributed mating holes, and the four corners of the flange plate are provided with fixing bolt holes, the steel strand passes through the mating holes and is fixedly connected to the lower anchor.

[0013] According to the shield tunneling launch frame of the first aspect of the present invention, the circular ring is fixedly disposed at one end of the rear support ring near the annular frame beam, for providing a force-bearing plane for installing the negative ring segment.

[0014] According to the shield tunneling launch frame of the first aspect of the present invention, the other ends of a plurality of steel strands pass through the outside of the annular frame beam and are fixedly connected to the upper anchor.

[0015] According to the shield tunneling launch frame of the first aspect of the present invention, both the upper anchor and the lower anchor include a fixed anchor plate, a clamping plate and a connecting plate. The fixed anchor plate is fixedly connected to the annular frame beam or a continuous jack through the connecting plate. The fixed anchor plate has a through hole through which a steel strand can pass. One end of the steel strand passes through the through hole and is fixed to one side of the fixed anchor plate with the clamping plate.

[0016] One of the above-described technical solutions of the present invention has at least one of the following advantages or beneficial effects:

[0017] The portal ring of this shield tunneling launch frame has the same inner diameter as the pre-embedded tempered ring on the portal, ensuring that the shield machine can smoothly enter the portal during launch. At the same time, the bracket is tilted, which can effectively push the shield machine towards the portal, reducing the need for continuous jacks and allowing for better excavation. The circular ring and the negative ring segment are of similar size, providing a force-bearing plane for installing the negative ring segment and ensuring the balance of force on the hydraulic cylinder. The shield machine is driven forward by guide wheels, and the rolling friction can effectively reduce frictional resistance, while the portal ring provides a guiding function. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the shield tunneling launch platform in the first embodiment of the present invention;

[0020] Figure 2 This is a side view of the shield tunneling launch platform in the first embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the guide wheel in the first embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the flange plate in the first embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the shield tunneling launch frame and the wall fixed in the first embodiment of the present invention. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0026] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] Furthermore, the terms "first" and "second" 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. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components, an indirect connection, or an interaction between two components.

[0029] The following disclosure provides many different implementations or examples for different ways of implementing the present invention.

[0030] Reference Figures 1 to 5 As shown, a shield tunneling launch pad is provided, including:

[0031] The support system is used to fix the tunnel boring machine. The support system includes a bracket 1, an annular frame beam 2 and a support pipe 3. The annular frame beam 2 is fixedly connected to the concrete on the starting portal. The bottom of the annular frame beam 2 is fixedly connected to the bottom plate of the starting shaft. One end of the support pipe 3 is fixedly connected to the annular frame beam 2 and the other end of the support pipe 3 is fixedly connected to the wall. The bracket 1 is inclined at the bottom of the annular frame beam 2 to form a downhill starting point.

[0032] The walking system, which provides power for the tunnel boring machine to move, includes an upper anchor 4, a lower anchor 5, several steel strands 6, a continuous jack 7, and a rear support ring 8. The rear support ring 8 is movably mounted on the end of the bracket 1 away from the annular frame beam 2. The continuous jack 7 is fixedly mounted on the rear support ring 8. The upper anchor 4 is fixedly mounted on the annular frame beam 2. The lower anchor 5 is fixedly mounted on the continuous jack 7. The two ends of the several steel strands 6 are respectively connected to the upper anchor 4 and the lower anchor 5.

[0033] The guiding system, used to limit the travel path of the tunnel boring machine, includes a portal ring 9, a circular ring 20, and a guide wheel 30. The portal ring 9 is fixedly connected to the end of the annular frame beam 2 away from the concrete. The circular ring 20 is connected to the rear support ring 8. The guide wheel 30 is fixedly installed at the bottom of the rear support ring 8. The guide wheel 30 is movably mounted on the bracket 1 and can move back and forth along the length of the bracket 1.

[0034] In some embodiments of the present invention, the bracket 1 includes two first connecting members 11 and several second connecting members 12. The two first connecting members 11 are inclined toward the direction of the annular frame beam 2. The two first connecting members 11 are fixedly connected by several second connecting members 12. Each of the two first connecting members 11 is provided with a guide rail 13, and the guide wheel 30 is movably disposed on the guide rail 13.

[0035] Preferably, the bracket 1 is inclinedly positioned at the bottom of the annular frame beam 2 to form a downhill starting point. A sloping mound of soil or concrete is piled up below the bracket 1, the bracket 1 is placed on top of it, and then connected to the bottom of the annular frame beam 2 to form a downhill starting point.

[0036] In some embodiments of the present invention, the guide wheel 30 includes a connecting bracket 31 and a roller 32. The roller 32 is rotatably mounted on the connecting bracket 31, and the connecting bracket 31 is fixedly mounted on the bottom of the rear support ring 8. The roller 32 has a recess 33 that cooperates with the guide rail 13. The width of the recess 33 is greater than the width of the guide rail 13 to prevent the roller 32 from deviating when rolling. At the same time, the sliding friction is changed to rolling friction, reducing frictional resistance and providing a guiding effect.

[0037] In some embodiments of the present invention, the rear support ring 8 is provided with four evenly distributed connecting protrusions 81 on its outer side. The connecting protrusions 81 are fixedly connected to the continuous jack 7. One end of several steel strands 6 passes through the connecting protrusions 81 and is fixedly connected to the lower anchor 5 on the continuous jack 7, so that one end of the steel strands 6 is fixedly connected to the continuous jack 7. The continuous jack 7 provides thrust, thereby driving the rear support ring 8 to push the tunnel boring machine forward.

[0038] In some embodiments of the present invention, the continuous jack 7 is provided with a flange plate 71, the flange plate 71 is provided with a plurality of evenly distributed mating holes 711, and the four corners of the flange plate 71 are provided with fixing bolt holes 72. The steel strand 6 passes through the mating holes 711 and is fixedly connected to the lower anchor 5. There are 4 sets of continuous jacks 7, all of which are of model LS500C-200. The rear support ring 8 serves to connect the tunnel boring machine and the continuous jack 7. The upper anchor 4 connecting the steel strand 6 is fixed on the annular frame beam 2, and the lower anchor 5 is fixed on the continuous jack 7. The steel strand 6 passes through the rear support ring 8 and is connected to the lower anchor 5, thereby converting the intermittent traction action into continuous traction operation.

[0039] Advantages of continuous jacks:

[0040] The LS-type CNC continuous traction jack system is a closed-loop control system based on PLC, touch screen, and sensors. It can automatically perform continuous traction, force and displacement control, and offers simple operation, process display, and fault alarms. It is an automated hydraulic continuous traction device integrating mechanical, electrical, hydraulic, sensor, and touch screen control technologies. The LS-type CNC continuous traction jack system uses a hydraulic pump station as its power source to drive the piston in reciprocating motion, causing load transfer between the upper and lower anchors, thereby achieving continuous traction of heavy objects.

[0041] In some embodiments of the present invention, the circular ring 20 is fixedly disposed at one end of the rear support ring 8 near the annular frame beam 2, for providing a force-bearing plane for installing the negative ring segment.

[0042] In some embodiments of the present invention, the other end of several steel strands 6 passes through the outside of the annular frame beam 2 and is fixedly connected to the upper anchor 4.

[0043] In some embodiments of the present invention, both the upper anchor 4 and the lower anchor 5 include a fixed anchor plate, a clamping plate and a connecting plate. The fixed anchor plate is fixedly connected to the annular frame beam 2 or the continuous jack 7 through the connecting plate. The fixed anchor plate has a through hole through which the steel strand 6 can pass. One end of the steel strand 6 passes through the through hole and is fixed to one side of the fixed anchor plate with the clamping plate.

[0044] In this embodiment, the annular frame beam 2 has holes for the tunnel boring machine to pass through. The annular frame beam 2 is fixed to the launching portal by pouring concrete on site. The bottom of the annular frame beam 2 is fixed to the bottom plate of the launching shaft. The support pipe 3 is D508×16 and is fixed to the opposite wall of the shaft bottom to form a relatively fixed worksheet. The portal ring 9 has the same inner diameter as the pre-embedded steel ring of the portal to ensure that the tunnel boring machine can smoothly enter the portal during launching. The circular ring 20 is similar in size to the segment and provides a force plane for installing the negative ring segment to ensure the balance of the force on the hydraulic cylinder. The guide wheel 30 contacts the bracket 1, and the sliding friction is changed to rolling friction, reducing frictional resistance and providing a guiding function.

[0045] The above is a further detailed description of the present invention and should not be considered as a limitation on the specific implementation of the present invention. For those skilled in the art, simple deductions or substitutions without departing from the concept of the present invention are all within the protection scope of the present invention.

Claims

1. A shield tunneling launch platform, characterized in that, include: A support system for fixing the tunnel boring machine includes a bracket (1), an annular frame beam (2) and a support pipe (3). The annular frame beam (2) is fixedly connected to the concrete on the starting portal. The bottom of the annular frame beam (2) is fixedly connected to the bottom plate of the starting shaft. One end of the support pipe (3) is fixedly connected to the annular frame beam (2), and the other end of the support pipe (3) is fixedly connected to the wall. The bracket (1) is inclined at the bottom of the annular frame beam (2) to form a downhill starting point. The walking system, which provides power for the tunnel boring machine to move, includes an upper anchor (4), a lower anchor (5), several steel strands (6), a continuous jack (7), and a rear support ring (8). The rear support ring (8) is movably mounted on one end of the bracket (1) away from the annular frame beam (2). The continuous jack (7) is fixedly mounted on the rear support ring (8). The upper anchor (4) is fixedly mounted on the annular frame beam (2). The lower anchor (5) is fixedly mounted on the continuous jack (7). The two ends of the several steel strands (6) are respectively connected to the upper anchor (4) and the lower anchor (5). The guiding system, used to limit the travel route of the tunnel boring machine, includes a portal ring (9), a circular ring (20) and a guide wheel (30). The portal ring (9) is fixedly connected to the end of the annular frame beam (2) away from the concrete. The circular ring (20) is connected to the rear support ring (8). The guide wheel (30) is fixedly installed at the bottom of the rear support ring (8). The guide wheel (30) is movably mounted on the bracket (1) and can move back and forth along the length of the bracket (1).

2. The shield tunneling launch platform according to claim 1, characterized in that, The bracket (1) includes two first connectors (11) and several second connectors (12). The two first connectors (11) are inclined toward the direction of the annular frame beam (2). The two first connectors (11) are fixedly connected by several second connectors (12). Each of the two first connectors (11) is provided with a guide rail (13). The guide wheel (30) is movably disposed on the guide rail (13).

3. The shield tunneling launch platform according to claim 2, characterized in that, The guide wheel (30) includes a connecting bracket (31) and a roller (32). The roller (32) is rotatably mounted on the connecting bracket (31). The connecting bracket (31) is fixedly installed at the bottom of the rear support ring (8). The roller (32) has a recess (33) that cooperates with the guide rail (13). The width of the recess (33) is greater than the width of the guide rail (13) to prevent the roller (32) from deviating when rolling.

4. The shield tunneling launch platform according to claim 1, characterized in that, The rear support ring (8) has four evenly distributed connecting protrusions (81) on its outside. The connecting protrusions (81) are fixedly connected to the continuous jack (7). One end of several steel strands (6) passes through the connecting protrusions (81) and is fixedly connected to the lower anchor (5) on the continuous jack (7).

5. The shield tunneling launch platform according to claim 4, characterized in that, The continuous jack (7) is provided with a flange plate (71), and the flange plate (71) is provided with a number of evenly distributed mating holes (711). The four corners of the flange plate (71) are provided with fixing bolt holes (72). The steel strand (6) passes through the mating holes (711) and is fixedly connected to the lower anchor (5).

6. The shield tunneling launch platform according to claim 1, characterized in that, The ring (20) is fixedly disposed at one end of the rear support ring (8) near the annular frame beam (2) to provide a force-bearing plane for installing the negative ring segment.

7. The shield tunneling launch platform according to claim 1, characterized in that, The other end of several of the steel strands (6) passes through the outside of the annular frame beam (2) and is fixedly connected to the upper anchor (4).

8. The shield tunneling launch platform according to claim 1, characterized in that, Both the upper anchor (4) and the lower anchor (5) include a fixed anchor plate, a clamping plate and a connecting plate. The fixed anchor plate is fixedly connected to the annular frame beam (2) or the continuous jack (7) through the connecting plate. The fixed anchor plate has a through hole through which the steel strand (6) can pass. One end of the steel strand (6) passes through the through hole and is fixed to one side of the fixed anchor plate with the clamping plate.

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