Automatic turnout switching device for shield tunnel construction

Abstract

The utility model relates to a shield tunnel construction turnout automatic switching device which comprises two first rails and two second rails, the two first rails are arranged in a tunnel in parallel and disconnected at the switching position, the two second rails are arranged in the tunnel in parallel and disconnected at the switching position, and the two first rails and the two second rails are vertically distributed; the fixing plate is mounted at the switch position between the two first rails and the two second rails; the circular rotating plate is installed on the fixed plate and can rotate relative to the fixed plate, two first auxiliary rails are installed on the circular rotating plate and arranged in parallel, and the distance between the two first auxiliary rails corresponds to the distance between the two first rails and the distance between the two second rails; and the driving motor is installed below the fixing plate, the output end of the driving motor penetrates through the fixing plate and is in driving connection with the circular rotating plate, the driving motor is used for driving the circular rotating plate to rotate, and the two first auxiliary rails can be in matched butt joint with the two first rails and the two second rails in the rotating process. According to the device, the vertically-distributed rail transport vehicle can be conveniently subjected to rail changing, automatic switching of the vertical turnout is achieved, the device is suitable for transportation of muck in a tunnel, and adaptability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunnel construction, especially the switch turnout technology, and specifically relates to an automatic switch turnout device for shield tunnel construction. Background Technique

[0002] The muck inside the shield tunnel is transported by transport vehicles. Due to the complexity inside the tunnel, it is convenient to transport the muck by running inside the transport vehicle track.

[0003] The prior art, such as the utility model patent CN220318273U, discloses an automatic switch turnout device for shield tunnel construction, including: a tunnel, on which a first track, a second track and a third track are laid. The first track and the second track are connected to each other, the first track and the third track are connected to each other, and a rail change device is fixedly connected to the surfaces of the second track and the third track. A fixed frame is fixedly connected to the tunnel. In this utility model, the output shaft of the servo drive motor drives the rotating rod to rotate, the rotating rod pulls the driving rod to move through a rotating buckle. At this time, the driving rod pulls the two groups of rail change devices to be simultaneously pulled to be abutted and connected to the first track through a clamping plate, so that the rail change device can change the track of the shield mechanism. When the shield mechanism comes from the first track, it can directly drive out from the second track or the third track without manual switch setting, reducing the construction risk of workers and improving the efficiency of transporting muck. For the tracks in the above prior art, the rail change device is used to switch the transport vehicle between the first track and the second track to realize the switch turnout of the transport vehicle in the tunnel.

[0004] However, in actual use, the offset angle between the first track and the second track in the track needs to be relatively small to use the rail change device to switch the track. Sometimes, it is necessary to make a right-angle switch for the transport vehicle, such as when the first track and the second track are vertically distributed, or in some scenarios where the space inside the tunnel is narrow, the conventional rail change device cannot change the track, and the adaptability of the switch turnout is poor. Therefore, an automatic switch turnout device for shield tunnel construction is proposed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the utility model provides an automatic switch turnout device for shield tunnel construction, which facilitates the rail change of the transport vehicle with vertically distributed tracks and improves the adaptability.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An automatic switch turnout device for shield tunnel construction, including:

[0008] Two first rails and two second rails, the two first rails are arranged in parallel in the tunnel and disconnected at a switch, the two second rails are arranged in parallel in the tunnel and disconnected at the switch, and the two first rails and the two second rails are distributed vertically;

[0009] A fixed plate, the fixed plate being installed at a switch between the two first rails and the two second rails;

[0010] A circular rotating plate, the circular rotating plate is mounted on the fixed plate and can rotate relative to the fixed plate, and two first auxiliary rails are mounted on the circular rotating plate, the two first auxiliary rails are arranged in parallel and the spacing between them corresponds to the two first rails and the two second rails;

[0011] A driving motor is installed under the fixed plate, and its output end passes through the fixed plate and is drivingly connected to the circular rotating plate, so as to drive the circular rotating plate to rotate. During the rotation, the two first auxiliary rails can be adapted to be connected with the two first rails and the two second rails.

[0012] In some embodiments, a plurality of limiting units are fixedly mounted on the peripheral edge of the fixing plate, and the plurality of limiting units fix the fixing plate to the tunnel floor.

[0013] In some embodiments, the limiting unit comprises a limiting plate fixedly mounted on the peripheral edge of the fixing plate and extending radially outward, and a plurality of mounting holes are formed through the limiting plate, and a plurality of anchor bolts pass through the mounting holes and are anchored in the tunnel floor.

[0014] In some embodiments, a mounting groove is provided on the upper surface of the fixed plate, and a matching groove is correspondingly provided on the bottom surface of the circular rotating plate. A bearing is installed in the mounting groove, and the circular rotating plate is sleeved on the bearing by means of the matching groove.

[0015] In some embodiments, a sealing ring is disposed on the outer wall of the circular rotating plate, and the sealing ring is sleeved on the outer periphery of the fixed plate.

[0016] In some embodiments, a protective heat dissipation cover is installed on the periphery of the drive motor, and the protective heat dissipation cover is sleeved on the outer wall of the drive motor to protect and dissipate heat for the drive motor.

[0017] In some embodiments, the protective heat dissipation cover includes a protective sleeve mounted on the outer wall of the drive motor, the outer wall of the protective sleeve is connected to an exhaust pipe, the protective sleeve and the exhaust pipe are pre-buried in the tunnel floor, one end of the exhaust pipe extends to the outside of the side wall of the fixed plate and is installed with a dustproof net.

[0018] In some embodiments, two second auxiliary tracks are further arranged on the circular rotating plate. The two second auxiliary tracks are staggered and fixedly connected with the two first auxiliary tracks. The two second auxiliary tracks and the two first auxiliary tracks form a cross-shaped structure, and the two second auxiliary tracks can be adaptively docked with the two first tracks and the two second tracks during the rotation process.

[0019] In some embodiments, relief grooves are formed in the inner walls of the two first auxiliary tracks at the intersection with the two second auxiliary tracks.

[0020] In some embodiments, both ends of the two first auxiliary tracks and the two second auxiliary tracks are of convex arc surface structures, and one ends of the two first tracks and the two second tracks close to the circular rotating plate are of concave arc surface structures adapted to the convex arc surface structures at the ends of the first auxiliary tracks and the second auxiliary tracks.

[0021] Compared with the prior art, the utility model has the following beneficial effects: The utility model provides an automatic switch device for a turnout in shield tunnel construction, which facilitates the rail change of vertically distributed rail transport vehicles and improves adaptability. Specifically, at least the following can be achieved:

[0022] (1) In the utility model, a circular rotating plate driven by a driving motor is installed between the two first tracks and the two second tracks. The circular rotating plate drives the two first auxiliary tracks to rotate, so that when the transport vehicle needs to transfer during the transportation of the muck inside the tunnel, the transport vehicle can be moved onto the two first auxiliary tracks. Through the rotation of the two first auxiliary tracks, the transport vehicle is driven to rotate, and then the transport vehicle can be moved from the first track to the second track, or from the second track to the first track, realizing the switch of the vertical turnout and adapting to the transportation of the muck in the tunnel.

[0023] (2) In the utility model, two second auxiliary tracks perpendicular to and fixed to the first auxiliary tracks are installed on the circular rotating plate. Further, when the transport vehicle moving on the first track or the transport vehicle moving on the second track does not need to switch, it can directly move from one side of the first track to the other side of the first track in cooperation with the first auxiliary track or the second auxiliary track, or move from one side of the second track to the other side of the second track in cooperation with the first auxiliary track or the second auxiliary track, facilitating the movement of the transport vehicle.

[0024] (3) In the utility model, the first auxiliary track and / or the second auxiliary track installed on the circular rotating plate can enable the transport vehicle to turn around in place on the circular rotating plate, so as to continue to return along the original route on the first track or the second track.

[0025] It should be understood that the implementation of any embodiment of the present invention does not mean that multiple or all of the above beneficial effects need to be simultaneously achieved or reached. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0027] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0028] Figure 1 Exemplarily showing the overall structural schematic diagram of the automatic switch device for turnouts in shield tunnel construction of the present utility model;

[0029] Figure 2 Exemplarily showing the connection structural schematic diagram of the first auxiliary track and the second auxiliary track of the present utility model;

[0030] Figure 3 Exemplarily showing the sectional structural schematic diagram of the fixing plate, circular rotating plate and protective sleeve of the present utility model;

[0031] Figure 4 Exemplarily showing the sectional structural schematic diagram of the protective heat dissipation cover of the present utility model.

[0032] In the figure:

[0033] 1. First track; 2. Second track; 3. Fixing plate; 4. Driving motor; 5. Circular rotating plate; 6. Protective heat dissipation cover; 61. Protective sleeve; 62. Exhaust pipe; 63. Dust-proof net; 7. Limiting unit; 71. Limiting plate; 72. Mounting hole; 73. Anchor bolt; 8. First auxiliary track; 9. Second auxiliary track; 10. Sealing ring; 11. Installation groove; 12. Matching groove; 13. Bearing; 14. Relief groove.

[0034] The same or corresponding marks in the figure represent the same or corresponding parts. Detailed implementation manners

[0035] To make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the following will further elaborate on the embodiments of the present invention in combination with the embodiments and the drawings. Herein, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0036] In the present invention, unless otherwise clearly specified or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] It should be understood that the terms "including / comprising", "consisting of...", or any other variant is intended to cover non-exclusive inclusion, so that a product, device, process, or method including a series of elements not only includes those elements but also, when necessary, may include other elements not explicitly listed, or further includes elements inherent to such product, device, process, or method. Without further limitation, the elements defined by the statements "including / comprising...", "consisting of..." do not exclude the existence of additional identical elements in the product, device, process, or method including the said elements.

[0038] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device, component, or structure must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation to the present invention.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] The implementation of the present invention will be described in detail below in conjunction with preferred embodiments.

[0041] Please refer to Figures 1-4, The automatic switch device for the turnout in shield tunnel construction of this embodiment includes two first tracks 1 and two second tracks 2 installed in the tunnel. The two first tracks 1 are horizontally distributed, the two second tracks 2 are horizontally distributed, the two first tracks 1 and the two second tracks 2 are vertically distributed. A fixing plate 3 is installed between the two first tracks 1 and the two second tracks 2. A driving motor 4 buried underground is installed on the bottom surface of the fixing plate 3. The output end of the driving motor 4 penetrates through the fixing plate 3 and is fixedly connected to a circular rotating plate 5. Two parallel first auxiliary tracks 8 are installed on the upper surface of the circular rotating plate 5. The two first auxiliary tracks 8 can be adaptively docked with the two first tracks 1 and the two second tracks 2 respectively.

[0042] As Figures 1-3 shown, the main structure of the automatic switch device for the turnout in shield tunnel construction in the present utility model is to facilitate the rail change of the vertically distributed rail transport vehicle and improve the adaptability. When using the transport vehicle to transport muck in the tunnel in the present utility model, at the fork in the track, the two first tracks 1 are parallel, the two second tracks 2 are parallel, and the two first tracks 1 and the two second tracks 2 are vertically distributed. Then, the fixing plate 3 is fixed at the turnout between the two first tracks 1 and the two second tracks 2, and the driving motor 4 on the bottom surface of the fixing plate 3 is buried underground. At this time, the transport vehicle can run on the first track 1 or the second track 2. When the transport vehicle needs to change from the first track 1 to the second track 2, the transport vehicle runs onto the two first auxiliary tracks 8 on the circular rotating plate 5 above the fixing plate 3. At this time, start the driving motor 4 to work. The driving motor 4 drives the circular rotating plate 5 to rotate, and the circular rotating plate 5 drives the two first auxiliary tracks 8 to rotate, so that the two first auxiliary tracks 8 are rotated to align with the second track 2. At this time, the transport vehicle moves, which is convenient for the transport vehicle to run onto the second track 2 to realize rail change. The transport vehicle can move from the first track 1 to the second track 2 in cooperation with the first auxiliary track 8 or from the second track 2 to the first track 1 in cooperation with the first auxiliary track 8 to realize the switch of the vertical turnout. The transport vehicle can also move from one side of the first track 1 to the other side in cooperation with the first auxiliary track 8, or move from one side of the second track 2 to the other side in cooperation with the first auxiliary track 8 to adapt to the straight-line transport of muck in the tunnel, and also has the functions of turning around and giving way to the transport vehicle. It can be foreseen that more tracks can be continuously added, and the angle between the added tracks and the first track 1 and the second track 2 can be within 90°. The first auxiliary track 8 is rotated to align with the added track, so that the transport vehicle can be transported onto the added track or run from the added track onto the first track 1 and the second track 2, thereby realizing more-angle rail change transportation.

[0043] Among them, the driving motor 4 mentioned above can be purchased on the market. It belongs to a mature technology and has been fully disclosed. Therefore, it will not be repeated in the specification. The driving motor 4 is equipped with a power connection line, and it is electrically connected to the external main controller and the 220V phase voltage (or 380V line voltage) through the power cord. And the main controller can be a conventional known device such as a computer that plays a control role.

[0044] In some embodiments, as Figure 1 , 2 shown, a plurality of limiting units 7 are fixedly installed on the peripheral side of the fixing plate 3 to be fixed to the tunnel floor. The limiting unit 7 includes a limiting plate 71 fixedly installed on the outer wall of the fixing plate 3. A plurality of mounting holes 72 are formed through the limiting plate 71, and a plurality of anchor bolts 73 are movably inserted into the mounting holes 72. When the fixing plate 3 is installed on the tunnel floor, the fixing plate 3 is placed on the ground, and the anchor bolts 73 are inserted into the mounting holes 72, so that the fixing plate 3 is fixed to the ground through the limiting plate 71, realizing stable fixation.

[0045] As Figure 3 shown, an installation groove 11 is formed on the upper surface of the fixing plate 3, and a matching groove 12 is formed on the bottom surface of the circular rotating plate 5. A bearing 13 is installed in the installation groove 11, and the matching groove 12 is sleeved on the outer wall of the bearing 13; the inner ring of the bearing 13 is fixed to the fixing plate 3, and the outer ring of the bearing 13 is fixed to the circular rotating plate 5. Furthermore, when the circular rotating plate 5 is driven to rotate by the driving motor 4, the circular rotating plate 5 is better stressed and has less friction.

[0046] As Figure 2 shown, a sealing ring 10 is fixedly connected to the outer wall of the circular rotating plate 5, and the sealing ring 10 is sleeved on the outer wall of the fixing plate 3; the sealing ring 10 shields the gap between the circular rotating plate 5 and the fixing plate 3 to prevent dust from entering and affecting the rotation of the circular rotating plate 5.

[0047] In some embodiments, as Figures 2-4 shown, a protective heat dissipation cover 6 is installed around the driving motor 4. The protective heat dissipation cover 6 is sleeved on the outer wall of the driving motor 4 and is used for protecting and dissipating heat from the driving motor 4. The protective heat dissipation cover 6 specifically adopts a protective sleeve 61 sleeved on the outer wall of the driving motor 4. An exhaust pipe 62 is communicated with the outer wall of the protective sleeve 61. The protective sleeve 61 and the exhaust pipe 62 are embedded in the tunnel floor, and one end of the exhaust pipe 62 extends outside the side wall of the fixing plate 3. The protective sleeve 61 shields and protects the driving motor 4, and the heat dissipated by the driving motor 4 is discharged to the ground through the exhaust pipe 62 for easy external heat dissipation.

[0048] Considering the gravel, muck and dust pollution in the underground operation environment, a dust-proof net 63 is further installed at the outer end of the exhaust pipe 62 to avoid damage to the motor.

[0049] Continue to refer toFigure 2 In some embodiments, two second auxiliary rails 9 are fixedly connected to the circular rotating plate 5, and the two second auxiliary rails 9 are staggered and fixedly connected with the two first auxiliary rails 8. The two second auxiliary rails 9 and the two first auxiliary rails 8 are in a tic-tac-toe structure. The two second auxiliary rails 9 are adapted to the two first rails 1 and the two second rails 2. The inner wall of the intersection of the second auxiliary rails 9 and the first auxiliary rails 8 is provided with a clearance groove 14; by using the cooperation of the two second auxiliary rails 9 and the two first auxiliary rails 8, the transport vehicle can run to the two second auxiliary rails 9 Or on two first auxiliary rails 8, the transportation vehicle is driven to rotate by the rotation of the circular turntable 5, so that the transportation vehicle changes tracks. At the same time, the transportation vehicle can also run on one side of the first rail 1 to the first auxiliary rail 8 or the second auxiliary rail 9, and then run to the other side of the first rail 1, or run on one side of the second rail 2 to the first auxiliary rail 8 or the second auxiliary rail 9, and then run to the other side of the second rail 2, which is convenient for the one-way operation of the transportation vehicle. When the transportation vehicle travels to the first auxiliary rail 8 or the second auxiliary rail 9, it uses the give way groove 14 to give way.

[0050] like Figure 1 , 2 As shown, both ends of the two first auxiliary rails 8 and the two second auxiliary rails 9 are convex arc surface structures, and the ends of the two first rails 1 and the two second rails 2 close to the circular turn plate 5 are concave arc surface structures adapted to the convex arc surface structures at the ends of the first auxiliary rails 8 and the second auxiliary rails 9; when the first auxiliary rail 8 or the second auxiliary rail 9 is rotated to be aligned with the first rail 1 or the second rail 2, the gap between its ends is small, which is convenient for the operation of the transport vehicle.

[0051] Implementation steps in this embodiment: When using a transport vehicle to transport muck in a tunnel, at the fork in the track, install two first tracks 1 and two second tracks 2. Make the two first tracks 1 parallel to each other, and make the two second tracks 2 parallel to each other. The two first tracks 1 and the two second tracks 2 are perpendicularly distributed. Then install the fixed plate 3 between the two first tracks 1 and the two second tracks 2, so that the driving motor 4, the protective sleeve 61, and part of the exhaust pipe 62 on the bottom surface of the fixed plate 3 are buried underground. Pass the anchor bolt 73 through the installation hole 72, and use the anchor bolt 73 to fix the fixed plate 3 to the ground through the limit plate 71. At this time, the transport vehicle can run on the first track 1 or the second track 2. When the transport vehicle needs to change tracks from the first track 1 to the second track 2, make the transport vehicle run onto the two first auxiliary tracks 8 or the two second auxiliary tracks 9 on the circular rotating plate 5 above the fixed plate 3. At this time, start the driving motor 4 to work. The driving motor 4 drives the circular rotating plate 5 to rotate. The circular rotating plate 5 drives the two first auxiliary tracks 8 and the two second auxiliary tracks 9 to rotate, so that the two first auxiliary tracks 8 or the second auxiliary tracks 9 rotate to align with the second track 2. At this time, the transport vehicle moves, and the transport vehicle runs onto the second track 2 to achieve track change. The transport vehicle can move from the first track 1 to the second track 2 in cooperation with the first auxiliary track 8 or the second auxiliary track 9, or move from the second track 2 to the first track 1 in cooperation with the first auxiliary track 8 or the second auxiliary track 9. The transport vehicle can also move from one side of the first track 1 to the other side in cooperation with the first auxiliary track 8 or the second auxiliary track 9, or move from one side of the second track 2 to the other side in cooperation with the first auxiliary track 8 or the second auxiliary track 9 to achieve the switch of the turnout, adapting to the transportation of muck in the tunnel. Of course, the transport vehicle can also make a U-turn in place with the help of the first auxiliary track 8 or the second auxiliary track 9, and then continue to return along the original route on the first track 1 or the second track 2.

[0052] Although several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present invention. Certain features described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, the various features described in the context of a single implementation can also be implemented separately or in any suitable sub-combination in multiple implementations.

[0053] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skill in the art in the technical field to understand the disclosed embodiments.

Claims

1. An automatic switch device for shield tunnel construction, characterized in that: include: Two first rails (1) and two second rails (2), the two first rails (1) are arranged in parallel in the tunnel and disconnected at a switch, the two second rails (2) are arranged in parallel in the tunnel and disconnected at the switch, and the two first rails (1) and the two second rails (2) are distributed vertically; A fixed plate (3), the fixed plate (3) being installed at a switch between two first rails (1) and two second rails (2); A circular rotating plate (5), the circular rotating plate (5) being mounted on the fixed plate (3) and being rotatable relative to the fixed plate (3), and two first auxiliary rails (8) being mounted on the circular rotating plate (5), the two first auxiliary rails (8) being arranged in parallel and having a spacing corresponding to that of the two first rails (1) and the two second rails (2); A driving motor (4) is installed below the fixing plate (3), and an output end of the driving motor (4) passes through the fixing plate (3) and is drivingly connected to the circular rotating plate (5), and is used to drive the circular rotating plate (5) to rotate. During the rotation process, the two first auxiliary rails (8) can be adapted to be connected with the two first rails (1) and the two second rails (2).

2. The automatic switch device for shield tunnel construction according to claim 1, characterized in that: A plurality of limiting units (7) are fixedly mounted on the peripheral edge of the fixing plate (3), and the plurality of limiting units (7) fix the fixing plate (3) to the tunnel floor.

3. The automatic switch device for shield tunnel construction according to claim 2 is characterized in that: The limiting unit (7) comprises a limiting plate (71) which is fixedly mounted on the peripheral edge of the fixing plate (3) and extends radially outwards, and a plurality of mounting holes (72) are formed through the limiting plate (71), and a plurality of anchor bolts (73) pass through the mounting holes (72) and are anchored and fixed in the tunnel floor.

4. The automatic switch device for shield tunnel construction according to claim 1, characterized in that: The upper surface of the fixed plate (3) is provided with a mounting groove (11), and the bottom surface of the circular rotating plate (5) is correspondingly provided with a matching groove (12). A bearing (13) is installed in the mounting groove (11), and the circular rotating plate (5) is sleeved on the bearing (13) by means of the matching groove (12).

5. The automatic switch device for shield tunnel construction according to claim 1, characterized in that: The outer wall of the circular rotating plate (5) is provided with a sealing ring (10), and the sealing ring (10) is sleeved on the outer circumference of the fixed plate (3).

6. The automatic switch device for shield tunnel construction according to claim 1, characterized in that: A protective heat dissipation cover (6) is installed on the periphery of the drive motor (4), and the protective heat dissipation cover (6) is sleeved on the outer wall of the drive motor (4) and is used to protect and dissipate heat for the drive motor (4).

7. The automatic switch device for shield tunnel construction according to claim 6, characterized in that: The protective heat dissipation cover (6) comprises a protective sleeve (61) sleeved on the outer wall of the driving motor (4); the outer wall of the protective sleeve (61) is connected to an exhaust pipe (62); the protective sleeve (61) and the exhaust pipe (62) are pre-buried in the tunnel floor; one end of the exhaust pipe (62) extends to the outside of the side wall of the fixing plate (3) and is provided with a dustproof net (63).

8. The automatic switch device for shield tunnel construction according to any one of claims 1 to 7, characterized in that: The circular rotating plate (5) is also provided with two second auxiliary rails (9), the two second auxiliary rails (9) are staggered and fixedly connected with the two first auxiliary rails (8), the two second auxiliary rails (9) and the two first auxiliary rails (8) are in a tic-tac-toe structure, and the two second auxiliary rails (9) can be adapted to be connected with the two first rails (1) and the two second rails (2) during the rotation process.

9. The automatic switch device for shield tunnel construction according to claim 8, characterized in that: The inner walls of the two first auxiliary rails (8) at the intersection of the two second auxiliary rails (9) are both provided with a clearance groove (14).

10. The automatic switch device for shield tunnel construction according to claim 8, characterized in that: Both ends of the two first auxiliary rails (8) and the two second auxiliary rails (9) are convex arc surface structures, and the ends of the two first rails (1) and the two second rails (2) close to the circular rotating plate (5) are concave arc surface structures adapted to the convex arc surface structures of the ends of the first auxiliary rails (8) and the second auxiliary rails (9).

Images