Starting sleeve device

Abstract

The utility model relates to a starting sleeve device. The starting sleeve device is used for starting connection of a tunneling main machine and comprises a tubular sleeve assembly and a sealing assembly installed on the sleeve assembly, a starting space and a fitting face located at an opening of the starting space are formed in the sleeve assembly, and the fitting face is matched with a connecting face of a starting tunnel portal. The starting sleeve device is connected with the starting tunnel portal, and the tail end of the sealing assembly is used for being elastically attached to the peripheral wall of the tunneling main machine. According to the starting sleeve device, the fitting face matched with the starting tunnel portal is machined in advance, the fitting face can be attached to or close to the connecting face of the starting tunnel portal, so that rapid matching and connecting fixing are achieved, the construction difficulty is lowered, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a launching sleeve device. Background Art

[0002] With the booming development of projects such as rail transit and underground space construction, the shield method is widely used as the main construction method. However, during the shield construction process, the most risky part is the launching stage of the tunneling equipment. To avoid risks such as water leakage, instability, and pressure imbalance that may occur when the tunneling main machine breaks through the portal during launching. In the existing construction process, a launching sleeve can be used to align with the preset launching portal. Among them, the launching sleeve is an auxiliary device for shield tunneling construction, and its main function is to provide support and protection when the shield machine launches. After the tunneling main machine enters the launching sleeve, the initial excavation is carried out to reduce the above risks. For example, the Chinese published document CN116517562A discloses a tail seal structure and method of a steel sleeve launching sleeve for a shield machine.

[0003] The launching sleeve is welded to the portal to form a fixed connection. However, there are still technical problems in the connection between the launching sleeve and the portal, such as how to effectively align the connection and ensure the external pressure and sealing of the tunneling main machine during the launching stage, which still need to be improved. Summary of the Utility Model

[0004] To overcome the problems existing in the related art, an embodiment of the utility model provides a launching sleeve device to solve the technical problem of low matching degree at the joint between the launching sleeve and the tunnel portal.

[0005] According to the first aspect of the embodiment of the utility model, a launching sleeve device is provided. The launching sleeve device is used for the initial connection of the tunneling main machine. The launching sleeve device includes a tubular sleeve assembly and a sealing assembly installed on the sleeve assembly. The sleeve assembly forms a launching space and a fitting surface at the opening of the launching space. The fitting surface is adapted to the connecting surface of the launching portal. The launching sleeve device is connected to the launching portal, and the sealing assembly is used to elastically fit the outer peripheral wall of the tunneling main machine.

[0006] In one embodiment, the sleeve assembly includes two or more assembled shells connected by splicing, and the fitting surface is located at the end face formed by the assembly of the assembled shells.

[0007] In one embodiment, the assembled shell includes an annular member in a tubular shape; and / or, the assembled shell includes a splicing block in a curved petal shape.

[0008] In one embodiment, a sealing mechanism is arranged at the joint between two adjacent assembled shells.

[0009] In one embodiment, the sealing mechanism includes a gasket, a sealing ring, or a plurality of sealing ribs that are complementary and cooperate with each other.

[0010] In one embodiment, the cross-section of the sleeve assembly in a direction perpendicular to the center line is circular, rectangular, quasi-rectangular, or other cross-sectional shapes adapted to accommodate the tunneling main machine.

[0011] In one embodiment, the sleeve assembly is provided with at least one personnel access opening and a cover assembly for correspondingly closing the personnel access opening, and a sealing member is arranged on the joint surface between the cover assembly and the personnel access opening.

[0012] In one embodiment, the sleeve assembly is provided with a plurality of grouting assemblies distributed at intervals, and the grouting assemblies communicate with the starting space.

[0013] In one embodiment, the sealing assembly includes at least two shield tail brush assemblies distributed at intervals on the sleeve assembly, a filling material space is formed between two adjacent shield tail brush assemblies, and the sleeve assembly is provided with a filling assembly communicating with the filling material space; or,

[0014] The sealing assembly includes at least one bladder assembly installed on the sleeve assembly.

[0015] In one embodiment, the starting sleeve device and the starting portal are mechanically connected; or,

[0016] The starting sleeve device and the starting portal are fixedly connected by welding; or,

[0017] The starting sleeve device is pressed against the starting portal under the jacking action of the preloading mechanism.

[0018] In one embodiment, the fitting surface is set as one of a convex arc-shaped curved surface, a concave arc-shaped curved surface, a plane, a plurality of planes, and a plurality of curves.

[0019] In one embodiment, an anti-pulling mechanism is arranged on the outer peripheral wall of the sleeve assembly, and the anti-pulling mechanism is far away from the fitting surface; wherein,

[0020] The anti-pulling mechanism is connected to the starting portal; and / or,

[0021] The anti-pulling mechanism is connected to the tunneling main machine to drive the tunneling main machine to move.

[0022] In one embodiment, the anti-pulling mechanism includes at least one anti-pulling frame fixedly connected to the sleeve assembly and a connecting member installed on the anti-pulling frame, and the connecting member connects the starting portal and / or the tunneling main machine.

[0023] The technical solutions provided by the embodiments of the present utility model may include the following beneficial effects: The starting sleeve device is pre-processed with a fitting surface that matches the starting portal. The fitting surface can fit or approach the connection surface of the starting portal to achieve quick matching and connection fixation, reducing the construction difficulty and improving the construction efficiency. The starting sleeve device can be adapted to any tunneling direction of the starting portal, and the tunneling direction includes horizontal direction, vertical direction or inclined direction, improving the flexibility of connection and assembly.

[0024] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present utility model and used together with the specification to explain the principles of the present utility model.

[0026] Figure 1 is a schematic structural diagram showing a starting sleeve device according to an embodiment.

[0027] Figure 2 is a side view showing a starting sleeve device according to an embodiment.

[0028] Figure 3 is a cross-sectional view showing a starting sleeve device connected to a starting portal according to an embodiment.

[0029] Figure 4 is an enlarged schematic view showing a sealing mechanism part according to an embodiment.

[0030] Figure 5 is a schematic view showing a rectangular sleeve assembly according to an embodiment.

[0031] Figure 6 is a schematic view showing a starting sleeve device provided with a back-pulling mechanism 101 according to an embodiment.

[0032] In the figures, sleeve assembly 10; fitting surface 11; grouting assembly 12; filling assembly 13; cover assembly 14; reinforcing rib 15; main body ring 16; connecting ring 17; sealing mechanism 18; assembling housing 19; back-pulling mechanism 101101; back-pulling hole 102; back-pulling frame 103; sealing component 20; starting portal 30; tunneling main machine 40. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams rather than actual physical diagrams, and should not be construed as a limitation on the present utility model; in order to better illustrate the embodiments of the present utility model, some components in the attached drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0034] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation on the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] In the description of the present utility model, unless otherwise clearly specified and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can 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 utility model can be understood according to specific circumstances.

[0036] As Figures 1 to 4 shown, the present utility model provides a starting sleeve device, and the starting sleeve device is used for the starting connection of the tunneling main machine 40. The starting sleeve device is used for fixedly connecting to the starting portal 30 and connecting to the outer peripheral wall of the tunneling main machine 40. Among them, the starting sleeve device is a tubular structure.

[0037] The starting sleeve device includes a tubular sleeve assembly 10 and a sealing assembly 20 installed on the sleeve assembly 10, and the sealing assembly 20 is distributed in a ring shape. The tunneling main machine 40 is inserted into the starting sleeve device, and the sealing assembly 20 elastically fits on the outer peripheral wall of the tunneling main machine 40 to form multiple fitting and sealing parts. Among them, the sealing assembly 20 can clean the objects on the surface of the tunneling main machine 40. Optionally, the cross-section of the sleeve assembly 10 in the direction perpendicular to the center line is circular, rectangular, quasi-rectangular or other cross-sectional shapes suitable for accommodating the tunneling main machine 40.

[0038] The sleeve assembly 10 is formed with a starting space and a fitting surface 11 located at the opening of the starting space. The fitting surface 11 is adapted to the connecting surface of the starting portal 30. Before the welding process of the sleeve assembly 10, the connecting surface of the starting portal 30 is inspected to obtain corresponding parameters, such as the bending angle, the inclination direction, or the welding area, etc. Based on the detected parameters of the connecting surface, the end of the sleeve assembly 10 is processed to form the fitting surface 11, constituting the pre-processing dimension parameters. The starting sleeve device pre-processes the fitting surface 11 that matches the starting portal 30, and the fitting surface 11 can fit or be close to the connecting surface of the starting portal 30. The sleeve assembly 10 can achieve rapid matching and connection, reducing the construction difficulty and improving the construction efficiency. The starting sleeve device can be adapted to any tunneling direction of the starting portal 30, and the tunneling direction includes the horizontal direction, the vertical direction, or the inclined direction, improving the flexibility of connection and assembly.

[0039] The fitting surface 11 and the starting portal 30 are matched and fitted. For example, when the starting portal 30 is arranged on the tunnel segment, the fitting surface 11 is set as a convex arc surface, a concave arc surface, multiple flat surfaces, or multiple curves, and the surface form is complementary to the tunnel segment; or, the radius of the arc surface is greater than the radius of the tunnel segment to facilitate the fitting surface 11 to abut against the tunnel segment and have a welding gap. Optionally, when the starting portal 30 is arranged at the starting position of the tunnel boring, the starting portal 30 has a planar structure. The sleeve assembly 10 is installed on the starting portal 30, and the fitting surface 11 is planar to form a planar fitting connection.

[0040] The sealing assembly 20 elastically fits the surface of the tunneling machine 40. The starting sleeve device is connected to the starting portal 30, and the tunneling machine 40 is loaded into the starting sleeve device. The sleeve assembly 10 is a tubular structure. Preferably, the sleeve assembly 10 is an integral tubular structure, so as to be installed on the starting portal 30 through the overall movement of the equipment, with fewer parts and good integrity.

[0041] In one embodiment, the sleeve assembly 10 includes two or more assembled shells 19 connected by assembly. The fitting surface 11 is located at the end face formed by the assembly of the assembled shells 19. The sleeve assembly 10 is composed of multiple assembled shells 19 combined to reduce the weight and volume of a single assembled shell 19, facilitating transportation and assembly. The structural form and assembly position of the assembled shell 19 can be adjusted according to the design requirements.

[0042] In one embodiment, the assembled shell 19 includes an annular member in a tubular shape; the annular members are spliced and connected ring by ring along the axial direction to form a tubular structure.

[0043] The assembled housing 19 adopts an integral ring structure. For example, the sleeve assembly 10 includes at least one main ring 16 and a connecting ring 17 connected to the main ring 16. The fitting surface 11 is arranged at the end of the connecting ring 17, and the main ring 16 and the connecting ring 17 are fixedly connected. The sleeve assembly 10 is composed of a combination of multiple main rings 16 and connecting rings 17, so as to further disperse the weight of the device. The connecting ring 17, as the connecting part of the starting portal 30, can be first connected and fixed to the starting portal 30. Then the main ring 16 is assembled to improve the construction convenience and adjustment flexibility. The sealing assembly 20 is installed on the main ring 16.

[0044] Optionally, both the main ring 16 and the connecting ring 17 are set as integral annular section structures to form a multi-section assembly. Optionally, the main ring 16 and the connecting ring 17 can be set as annular section structures formed by closing two or more assembled housings 19. Multiple assembled housings 19 are assembled to form the sleeve assembly 10, and they can be assembled one by one during the assembly process to improve the assembly convenience. Especially for some heavy sleeve assemblies 10, a multi-lobe assembly structure can be adopted.

[0045] In another embodiment, the assembled housing 19 includes assembled blocks in a curved lobe shape. The assembled blocks can be set as an arc-shaped curved structure. For example, the assembled block is a semi-circular structure, including an upper half housing and a lower half housing that are closed to each other. Preferably, the sleeve assembly 10 includes an upper half housing and a lower half housing that are closed and fitted together, and the upper half housing and the lower half housing are closed to form a cavity structure. The upper half housing and the lower half housing are installed separately, so as to reduce the weight of a single fitting and carry out prefabricated part production and on-site assembly construction.

[0046] Optionally, the main ring 16 and the connecting ring 17 can also be combined and fixed by using the structure of a multi-lobe assembled housing 19, that is, multiple assembled blocks are combined to form an annular main ring 16 or connecting ring 17, and then the main ring 16 and the connecting ring 17 are connected and assembled.

[0047] In one embodiment, a sealing mechanism 18 is arranged at the joint of two adjacent assembled housings 19. The sealing mechanism 18 constructs an elastic seal or a mechanical seal at the mating part of the assembled housing 19 to prevent or reduce the liquid from flowing out of the starting sleeve device.

[0048] Optionally, the sealing mechanism 18 includes a sealing gasket, and the sealing gasket is defined at the joint of the assembled housing 19. Optionally, in two adjacent mating assembled housings 19, one of the assembled housings 19 is provided with a sealing groove, and the sealing gasket is installed in the sealing groove.

[0049] Optionally, the sealing mechanism 18 includes a sealing ring, and the sealing ring is squeezed and sealed with the other assembled housing 19 to form an annular sealing structure.

[0050] Optionally, the sealing mechanism 18 includes a plurality of sealing ribs that are complementary and cooperate with each other. The mating end faces of two adjacent assembled shells 19 are provided with a plurality of sealing ribs that are arc-shaped and inserted, and a labyrinth sealing gap is formed between adjacent sealing ribs.

[0051] Further preferably, the sealing ribs can be used in combination with a sealing ring or a gasket, thereby being able to improve the sealing effect.

[0052] In one embodiment, the sleeve assembly 10 is provided with at least one personnel access port and a cover assembly 14 corresponding to close the personnel access port. A sealing member is provided on the joint surface between the cover assembly 14 and the personnel access port. The personnel access ports are distributed on the outer peripheral wall of the sleeve assembly 10. Materials can be sent into or taken out of the sleeve assembly 10 through the personnel access ports. Alternatively, personnel can enter the sleeve assembly 10 through the personnel access ports for welding operations. The cover assembly 14 opens and closes the personnel access port movably. When the cover assembly 14 closes the personnel access port, a hollow cavity structure is formed inside the sleeve assembly 10.

[0053] Preferably, the personnel access port is close to the fitting surface 11, so as to facilitate personnel to enter for welding.

[0054] Preferably, the number of personnel access ports can be set to one, and the personnel access port is opened along the side surface of the sleeve assembly 10. Preferably, the number of personnel access ports is set to a plurality, and the plurality of personnel access ports are spaced apart and distributed along the outer peripheral wall of the sleeve assembly 10, so as to be able to flexibly arrange the channel directions for entering and exiting the sleeve assembly 10 through the personnel access ports.

[0055] Optionally, the sealing assembly 20 includes at least two tail shield brush assemblies that are spaced apart and distributed on the sleeve assembly 10. A filling material space is formed between two adjacent tail shield brush assemblies. The sleeve assembly 10 is provided with a filling assembly 13 that communicates with the filling material space. The internal space of the sleeve assembly 10 is partitioned, and a filling material space is formed between two adjacent sealing assemblies 20. A filling material is injected into the filling material space to achieve sealing. Preferably, the filling material can include fluid materials such as grease, viscous materials, and polymer materials that can be used for waterproof sealing. The sleeve assembly 10 is provided with a filling assembly 13, and the filling assembly 13 corresponds to and communicates with the filling material space. The filling assembly 13 injects lipid materials into the filling material space to maintain the sealing of the filling material space.

[0056] Optionally, the sealing assembly 20 includes at least one bladder assembly installed on the sleeve assembly. The bladder assembly is arranged in an annular bladder structure, and a gas or liquid fluid is filled in the bladder assembly to enable the bladder assembly to change in terms of inflation and deflation. The bladder assembly is made of a waterproof and sealed flexible material.

[0057] In one embodiment, the sleeve assembly 10 is provided with a plurality of grouting assemblies 12 distributed at intervals, and the grouting assemblies 12 communicate with the starting space. The grouting assemblies 12 are provided in a plurality, and the plurality of grouting assemblies 12 are distributed at intervals along the outer peripheral wall of the sleeve assembly 10. Optionally, the grouting assembly 12 is provided as one, two, three, five, ten, fifteen, twenty, etc. Preferably, the plurality of grouting assemblies 12 are distributed at intervals along the axial direction of the sleeve assembly 10.

[0058] The sleeve assembly 10 is fixedly connected to the starting portal 30 through the fitting surface 11, and the joint parts are fitted. Specifically, the sleeve assembly 10 is connected to the starting portal 30 through the connecting ring 17.

[0059] In an alternative embodiment, the starting sleeve device and the starting portal 30 are mechanically connected, wherein the sleeve assembly 10 and the starting portal 30 are locked and connected by fasteners. The connecting ring 17 and the starting portal 30 are fixedly connected by fasteners, which is convenient for disassembly and connection. For example, the connecting ring 17 is provided with a flange at the edge of the fitting surface 11, and a plurality of threaded holes are distributed at intervals on the starting portal 30. The fasteners pass through the holes on the flange and are locked to the threaded holes to form a screw lock.

[0060] In another alternative embodiment, the starting sleeve device and the starting portal 30 are fixedly connected by welding, wherein the sleeve assembly 10 and the starting portal 30 are fixedly connected by welding. The connecting ring 17 is aligned with the starting portal 30, and then welding operations are performed. Optionally, the connecting ring 17 is a segmented or block structure, and the overall weight is reduced to facilitate assembly and splicing. The connecting ring 17 is fixedly connected to the starting portal 30 by welding, and the joint part has high connection strength and good sealing performance.

[0061] In yet another alternative embodiment, the starting sleeve device abuts against the starting portal 30 under the jacking action of the preloading mechanism, wherein the sleeve assembly 10 is embedded and fixedly connected to the starting portal 30. A fixing ring with an annular structure is fixedly installed in the area of the starting portal 30, and the sleeve assembly 10 is embedded and installed in the fixing ring. Alternatively, the tunnel segment in the area of the starting portal 30 is correspondingly recessed, and the sleeve assembly 10 is embedded in the tunnel segment and fixedly connected to the tunnel segment, thereby realizing connection and locking.

[0062] The preloading mechanism is configured to apply pressure to push the starting sleeve device so that the starting sleeve device and the starting portal 30 are connected. Optionally, the preloading mechanism can be configured as a hydraulic cylinder mechanism, a screw mechanism connecting the starting portal 30 and the starting sleeve device, an electric cylinder mechanism, a cylinder mechanism, a gear rack mechanism, etc. The sleeve assembly 10 is embedded and connected to the starting portal 30, which is not only accurately positioned but also convenient for fixing.

[0063] In one embodiment, a plurality of reinforcing ribs 15 are provided on the outer peripheral wall of the sleeve assembly 10. The reinforcing ribs 15 are distributed on the outer peripheral wall of the sleeve assembly 10, which can improve the structural strength of the sleeve assembly 10. Preferably, some of the reinforcing ribs 15 are distributed at the joint part and are assembled and strengthened as the connecting part. Preferably, the reinforcing ribs 15 are distributed along the connection between the upper half shell and the lower half shell and are locked by fasteners to enhance the connection strength.

[0064] As Figures 1 to 5 shown, preferably, an anti-pull mechanism 101 is provided on the outer peripheral wall of the sleeve assembly 10. The anti-pull mechanism 101 is away from the fitting surface 11. The anti-pull mechanism 101 is connected to the sleeve assembly 10, and the anti-pull mechanism 101 can establish a connection between the sleeve assembly 10 and the starting portal 30 and / or the tunneling main machine 40 to construct a corresponding mechanical system.

[0065] In an alternative embodiment, the anti-pull mechanism 101 is connected to the starting portal 30 to enhance the connection strength between the sleeve assembly 10 and the starting portal 30. Among them, the anti-pull mechanism 101 is connected to the outer peripheral wall of the sleeve assembly 10 and the steel part corresponding to the starting portal 30 to improve the connection strength between the sleeve assembly 10 and the starting portal 30. One or more anti-pull mechanisms 101 are provided on the surface of each sleeve assembly 10. When multiple anti-pull mechanisms 101 are provided, the sleeve assembly 10 and the starting portal 30 can be connected from multiple directions. Preferably, the anti-pull mechanism 101 is located in the upper region of the sleeve assembly 10.

[0066] In an alternative embodiment, the anti-pull mechanism 101 includes at least one anti-pull frame 103 fixedly connected to the sleeve assembly 10 and a connecting member installed on the anti-pull frame 103. The connecting member connects the starting portal 30 and / or the tunneling main machine 40. The anti-pull frame 103 is fixedly welded to the outer peripheral wall of the sleeve assembly 10, which can not only transmit the force received by the sleeve assembly 10 to the starting portal 30 through the connecting member, but also improve the structural strength of the sleeve assembly 10.

[0067] The anti-pull frame 103 is provided with an anti-pull hole 102, and the connecting member is connected to the anti-pull frame 103. Preferably, the anti-pull frame 103 includes two relatively arranged anti-pull blocks and a reinforcing block connecting the two anti-pull blocks. The anti-pull blocks and the reinforcing block form a rectangular reinforcing structure. The anti-pull hole 102 penetrates the anti-pull block. Preferably, the number of anti-pull holes 102 can be set to one or more. For example, the anti-pull block is provided with one, two, three or five penetrating anti-pull holes 102.

[0068] In a preferred embodiment, a plurality of anti-pull mechanisms 101 are provided, and the anti-pull mechanisms 101 are symmetrically distributed on the sleeve assembly 10; or, the anti-pull mechanisms 101 are evenly distributed along the sleeve assembly 10 to form an evenly stressed state.

[0069] In an optional embodiment, the reverse pull mechanism 101 is connected to the excavation main machine 40 to drive the excavation main machine 40 to move. The reverse pull mechanism 101 is assembled on the barrel assembly 10 and connected to the outer peripheral wall of the excavation main machine 40. The reverse pull mechanism 101 is provided with a movable structure to drive the excavation main machine 40 to move along the barrel assembly 10, and the excavation main machine 40 excavates the excavation part of the starting tunnel door 30. For example, the reverse pull mechanism 101 is provided with a sliding rod and a driving member connected to the sliding rod, the driving member is assembled on the barrel assembly 10 and connected to the sliding rod, and the sliding rod is connected to the outer peripheral wall of the excavation main machine 40. The driving member drives the sliding rod to move to drive the excavation main machine 40 to move. Preferably, the driving member is set as a movable structure such as a hydraulic cylinder mechanism, a gear rack structure, etc.

[0070] There are two ways for the reverse pulling mechanism 101 to synchronously connect the starting tunnel door 30 and the excavation host 40:

[0071] Mode 1: The reverse pull mechanism 101 is connected to the starting tunnel door 30, and the reverse pull mechanism 101 is connected to the excavation main machine 40 to drive the excavation main machine 40 to move. In this embodiment, the reverse pull mechanism 101 is connected to both the starting tunnel door 30 and the excavation main machine 40, which can not only improve the rigidity of the cylinder assembly 10, but also provide excavation power for the excavation main machine 40. The reverse pull mechanism 101 is connected to both the starting tunnel door 30 and the excavation main machine 40, and forms an integral structure.

[0072] Mode 2: The reverse pull mechanism 101 is connected to the starting tunnel door 30, and the reverse pull mechanism 101 is connected to the excavation host 40 to drive the excavation host 40 to move. In this embodiment, the reverse pull mechanism 101 is set as a split structure, one part of the reverse pull mechanism 101 is connected to the starting tunnel door 30, and the other part is connected to the excavation host 40, so as to form independent adjustment and convenient connection.

[0073] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0074] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A starting sleeve device for the starting connection of a tunneling main machine, characterized in that, The starting sleeve device includes a tubular sleeve assembly and a sealing assembly installed on the sleeve assembly, the sleeve assembly forms a starting space and a fitting surface located at the opening of the starting space, the fitting surface is adapted to the connecting surface of the starting tunnel door, the starting sleeve device is connected to the starting tunnel door, and the sealing assembly is used to elastically fit the outer peripheral wall of the tunneling main machine.

2. The starting sleeve device according to claim 1, characterized in that, The sleeve assembly includes two or more assembled shells that are assembled and connected, and the fitting surface is located at the end surface formed by the assembly of the assembled shells.

3. The starting sleeve device according to claim 2, wherein, The assembled shell includes a tubular annular member; and / or the assembled shell includes an assembled block in a bent petal shape.

4. The starting sleeve device according to claim 2, wherein, A sealing mechanism is provided at the joint of two adjacent assembled shells.

5. The starting sleeve device according to claim 4, characterized in that, The sealing mechanism includes a sealing gasket or a sealing ring or a plurality of complementary sealing ribs.

6. The starting sleeve device according to claim 1, characterized in that, The cross section of the sleeve assembly in a direction perpendicular to the center line is circular, rectangular, quasi-rectangular or other cross-sectional shapes suitable for accommodating the tunneling host.

7. The starting sleeve device according to claim 1, characterized in that, The sleeve assembly is provided with at least one manhole opening and a corresponding cover assembly for closing the manhole opening, and a sealing member is provided on the joint surface between the cover assembly and the manhole opening.

8. The starting sleeve device according to claim 1, characterized in that, The sleeve assembly is provided with a plurality of grouting assemblies distributed at intervals, and the grouting assemblies are communicated with the starting space.

9. The starting sleeve device according to claim 1, characterized in that, The sealing assembly comprises at least two shield tail brush assemblies spaced apart from each other in the sleeve assembly, a filling space is formed between two adjacent shield tail brush assemblies, and the sleeve assembly is provided with a filling assembly connected to the filling space; or, The seal assembly includes at least one bladder assembly mounted to the sleeve assembly.

10. The starting sleeve device according to claim 1, characterized in that, The launching sleeve device and the launching tunnel door are mechanically connected; or, The launching sleeve device and the launching tunnel door are fixedly connected by welding; or, The launching sleeve device is pressed against the launching tunnel door under the lifting action of the pre-pressing mechanism.

11. The starting sleeve device according to claim 1, characterized in that, The fitting surface is set to be one of a convex arc surface, a concave arc surface, a plane, a multi-segment plane, and a multi-segment curve.

12. The starting sleeve device according to claim 1, characterized in that, The outer peripheral wall of the sleeve assembly is provided with a back-pull mechanism; wherein, The reverse pulling mechanism is connected to the starting tunnel door; and / or, The reverse pulling mechanism is connected to the excavation main machine to drive the excavation main machine to move.

13. The starting sleeve device according to claim 12, characterized in that, The back-pull mechanism comprises at least one back-pull frame fixedly connected to the sleeve assembly and a connecting member installed on the back-pull frame, and the connecting member is connected to the starting tunnel door and / or the excavation main machine.

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