Moving mechanism for tunnel boring machine

Abstract

The utility model discloses a moving mechanism for a tunnel boring machine, which comprises a support structure connected with passive equipment and matched with the inner wall of a tunnel segment, and the support structure is provided with a self-driven walking device; the supporting framework serves as a power device for dragging passive equipment such as the rear supporting system of the heading machine and is matched with the inner wall of the tunnel segment to form a supporting device, the rear supporting system of the heading machine can be prevented from rolling and overturning while the rear supporting system of the heading machine is driven to retreat, a steel wheel track or a rubber-tyred vehicle does not need to be used, and cost is reduced. The construction period is short, and operation construction in other holes is not affected. Or the supporting structure is connected with a tight supporting mechanism matched with the tunnel segment and connected with the passive equipment through a first telescopic device, the supporting structure and the tunnel segment are relatively fixed through the tight supporting mechanism, then the first telescopic device retracts, and the passive equipment such as a rear matching system of the heading machine can be stably dragged backwards to achieve returning.

Description

Technical Field

[0001] The utility model relates to the technical field of the retreat of tunnel equipment, in particular to a moving mechanism for a tunnel boring machine. Background Art

[0002] Disassembly inside the tunnel is a common construction operation in the current construction of tunnel shield machines. The primary factor for disassembly inside the tunnel is that the rear support system retreats from the face to the starting shaft.

[0003] Currently, the commonly used method is to tow it outside the tunnel with a grouped diesel or new energy powered vehicle. This method is mainly used when the rear support trailer of the tunneling machine uses steel wheels to run on the track. For example, in a patent application for an invention with a publication date of January 17, 2023 and a publication number of CN 115611154 A, which discloses a method for non-destructive disassembly of a TBM under existing chamber conditions, step 6 is as follows: Disassembly of the TBM rear support trailer: After the disassembly of the TBM main machine is completed, lay a trailer track on the receiving bracket, connect the traction device to the TBM rear support trailer, tow the TBM rear support trailer to the receiving bracket through the traction device, disconnect the connections of each component of the TBM rear support trailer, use a steel wire rope to connect the ceiling lifting device to each component of the TBM rear support trailer, and lift and move it to the side for transporting out of the tunnel in sequence for loading and transporting out of the tunnel.

[0004] If the rear support trailer of the tunneling machine uses the form of rubber-tyred wheels, then a rubber-tyred vehicle is required for towing. For example, in a patent application for an invention with a publication date of November 8, 2022 and a publication number of CN 115306412 A, which discloses a method for overall in-tunnel transfer of a rear support trailer of a shield machine, in S4, a transverse support member is arranged between the muck truck and the longitudinal beam of the rear support trailer to fix the rear support trailer on the muck truck; in S5, the head of the frequency conversion vehicle tow the muck truck to drive the rear support trailer to the next designated position. This method not only easily causes phenomena such as rollover and capsizing of the trailer, which will cause damage to the equipment and prevent it from traveling along the established route, but also has a long construction period for this construction method. During transportation, other operations inside the tunnel need to stop for cooperation.

[0005] Therefore, it is necessary to design a device that enables the rear support trailer system of the tunneling machine to retreat by itself.

[0006] It should be particularly noted that the above technical information is only intended to deepen the understanding of the overall background art of the present utility model, and should not be regarded as an admission or any form of implication that the above technical information constitutes the prior art known to those skilled in the art. Summary of the Utility Model

[0007] In view of the deficiencies in the above-mentioned background technology, the present utility model proposes a moving mechanism for a tunnel boring machine, which solves the technical problems that the trailing trailer of the boring machine is prone to rollover during backward movement, has a long construction period and affects other in-tunnel operations.

[0008] The technical solution of this application is as follows:

[0009] A moving mechanism for a tunnel boring machine includes a support structure connected to a passive device and adapted to the inner wall of the tunnel segment. The support structure is provided with a self-driven traveling device; that is, the support structure serves both as a power device for towing the passive device, where the passive device is the trailing system of the boring machine, etc., and forms a support device by adapting to the inner wall of the tunnel segment. While driving the trailing system of the boring machine to move backward, it can prevent the trailing system of the boring machine from rolling over, and there is no need to use steel wheel tracks or rubber-tyred vehicles, resulting in a short construction period and not affecting other in-tunnel operations.

[0010] Alternatively, the support structure is connected to a tightening mechanism adapted to the tunnel segment and is connected to the passive device through a first telescopic device. That is, the support structure does not have a self-driven traveling device, but provides a stepping mechanism. By fixing the support structure relative to the tunnel segment through the tightening mechanism, and then retracting the first telescopic device, the trailing system of the boring machine can be stably towed backward to achieve retraction. When the stroke of the first telescopic device is used up, the relative fixed state between the tightening mechanism and the tunnel segment is released, and then the first telescopic device is extended to reset, and the next retraction step can be entered.

[0011] Based on the above technical solution, as a preferred technical solution, the traveling device includes a driving motor, a reducer, a transmission device, and a traveling wheel pair device connected in sequence. The driving motor increases the torque through the deceleration of the reducer, and transmits the output power to the traveling wheel pair device through the transmission device. The traveling wheel pair device drives the trailing system of the boring machine to travel, and at the same time, the support structure prevents the trailing system of the boring machine from rolling over.

[0012] Based on the above technical solution, as a preferred technical solution, the traveling wheel pair devices are symmetrically arranged in pairs with respect to the central vertical plane of the tunnel segment, further ensuring the stability of traveling.

[0013] Based on the above technical solution, as a preferred technical solution, the first telescopic device is a step-changing oil cylinder or a lead screw. When the first telescopic device is a step-changing oil cylinder, a hydraulic pump station system that can generate electricity by itself is adopted, and the hydraulic pump station system and the supporting electrical control system are both installed on the trailing system of the boring machine; when the first telescopic device is a lead screw, convenient telescoping can also be achieved through an electric control method.

[0014] On the basis of the above technical solution, as a preferred technical solution, the support structure includes a bottom arc structure and a side arc structure detachably connected to both ends of the bottom arc structure. The detachable design structure can remove the bottom arc structure as needed to facilitate the passage of the rubber-wheeled vehicle for other construction work. The walking device, the tightening mechanism, and the first telescopic device are all connected to the side arc structure. Preferably, the walking device is arranged at the lower end of the side arc structure, the tightening mechanism is arranged at the upper half of the side arc structure, and the first telescopic device is arranged in the middle of the side arc structure.

[0015] On the basis of the above technical solution, as a preferred technical solution, the circular arc structure formed by the bottom arc structure and the side arc structure is concentric with the tunnel segment, which can further ensure the stability of the walking process; the two side arc structures are provided with top lifting ears on one end away from the bottom arc structure, which is convenient for the rapid lifting of the side arc structure in the tunnel.

[0016] On the basis of the above technical solution, as a preferred technical solution, the tightening mechanism includes a second telescopic device hinged to the side arc structure, and a support member is hinged between the second telescopic device and the side arc structure. When the second telescopic device is extended, the support member can press the inner wall of the tunnel segment, and when the second telescopic device is retracted, the support structure is separated from the tunnel segment and can move relative to the tunnel segment. Of course, it is also possible to control the extension amount of the second telescopic device, thereby adjusting the gap between the support member and the inner wall of the tunnel segment, thereby adapting to the walking process of the self-driven walking device. The specific selection of the second telescopic device can refer to the first telescopic device, and either a cylinder or a screw can be selected, and technicians in the relevant technical field can implement it by themselves.

[0017] Based on the above technical solution, as a preferred technical solution, the support member is an arc-shaped plate, and the use of the arc-shaped plate can further improve the reliability of the tightening or friction. Preferably, the two arc-shaped plates on the side arc-shaped structures on both sides are symmetrical.

[0018] On the basis of the above technical solution, as a preferred technical solution, a clearance groove for the tunnel boring machine pipeline is provided on the side arc structure. For example, the clearance groove is used as the passing space for the water inlet pipe and the return pipe of the tunnel boring machine, and can also be used as the passing space for other pipelines.

[0019] On the basis of the above technical solution, as a preferred technical solution, the bottom arc structure, the side arc structure and the support are all steel structures.

[0020] Compared with the prior art, the technical solution provided by the utility model avoids the deficiencies that when a rubber-tyred vehicle is conventionally used for traction and reverse movement, the trailing trailer is prone to roll over, is not easy to adjust and reset, and may tip over; and the transportation route is occupied by the rubber-tyred vehicle, resulting in interruption of other processes and inability to construct. It realizes the function of the trailing system moving backward by itself, improves the automation function of the equipment, reduces the construction risk, and enhances the construction efficiency. Of course, the technical solution provided by the utility model is not only applicable to the self-backward movement of the trailing system of the roadheader, but also can be used for the movement of other equipment under other working conditions. Description of the Drawings

[0021] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0022] Figure 1 It is a cross-sectional view of the tunnel;

[0023] Figure 2 It is a front view of the moving mechanism for the tunnel boring machine;

[0024] Figure 3 It is Figure 2 a schematic diagram of the tightened state of

[0025] Figure 4 It is Figure 2 a schematic diagram of the loosened state of

[0026] Figure 5 It is a schematic diagram of the state when the rubber-tyred vehicle passes through;

[0027] Figure 6 It is a step-changing action diagram of the moving mechanism for the tunnel boring machine.

[0028] Explanation of the reference numerals in the drawings:

[0029] Trailing system 1 of the roadheader, trailer ear seat 101;

[0030] Tunnel segment 2, ventilation air duct 3, water inlet pipe 4, water return pipe 5, rubber-tyred vehicle 6, hydraulic pump station system 7, electrical control system 8;

[0031] Support structure 9, step-changing oil cylinder ear seat 901, tightening oil cylinder mounting ear seat 902, support steel structure tightening ear seat 903, ear seat 904;

[0032] Support member 10, second telescopic device 11, first telescopic device 12, walking wheel pair device 13, bottom arc structure 14, side arc structure 15, top lifting lug 16, relief groove 17. Detailed implementation manners

[0033] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part rather than all of the embodiments of the present utility model. Based on the core concept of the present utility model and the following embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] These embodiments are provided in this application to make this application thorough and complete, and to fully convey the scope of this application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0035] It should be noted that in the description of this application, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial", etc. The indicated orientation or positional relationship is only for the convenience of describing this application 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, and therefore cannot be construed as a limitation of this application. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0036] In addition, the "first", "second" and similar terms used in this application do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0037] It should also be noted that in the description of this application, unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0038] All terms used in this application have the same meanings as understood by those of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that the terms defined in a general dictionary, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0039] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0040] As Figure 1 shown, when the tunneling machine is disassembled, the tunnel section mainly includes the tunnel segment 2 after lining, the ventilation air duct 3 of the tunnel, the water inlet pipe 4, the water return pipe 5, the rubber-tired vehicle 6, etc.

[0041] The moving mechanism for the tunnel boring machine provided by this application Figure 2 shown, includes a support structure 9 connected to the rear supporting system 1 of the tunneling machine and adapted to the inner wall of the tunnel segment 2, and the support structure 9 is provided with a self-driven traveling device; that is, the support structure 9 serves both as a power device for towing the rear supporting system 1 of the tunneling machine and forms a support device by being adapted to the inner wall of the tunnel segment 2. While driving the rear supporting system 1 of the tunneling machine to retreat, it can prevent the rear supporting system 1 of the tunneling machine from rolling over, and there is no need to use steel wheel tracks or rubber-tired vehicles, with a short construction period and no impact on other in-tunnel operation constructions.

[0042] As another embodiment, the support structure 9 is connected with a tightening mechanism adapted to the tunnel segment 2 and is connected to the rear supporting system 1 of the tunneling machine through a first telescopic device 12. As Figure 6 shown, that is, the support structure 9 is not provided with a self-driven traveling device, but provides a stepping mechanism. By being relatively fixed to the tunnel segment 2 through the tightening mechanism, and then the first telescopic device 12 retracts, the rear supporting system 1 of the tunneling machine can be stably towed backward to achieve retreat. When the stroke of the first telescopic device 12 is used up, the relative fixed state between the tightening mechanism and the tunnel segment 2 is released, and then the first telescopic device 12 is extended to reset, and then the next retreat step can be entered.

[0043] Based on the above embodiments, as a preferred embodiment, the traveling device includes a driving motor, a speed reducer, a transmission device, and a traveling wheel pair device 13 connected in sequence. The driving motor decelerates and increases torque through the speed reducer, and transmits the output power to the traveling wheel pair device 13 through the transmission device. The traveling wheel pair device 13 drives the rear supporting system 1 of the tunneling machine to travel, and at the same time, the support structure 9 prevents the rear supporting system 1 of the tunneling machine from rolling over.

[0044] On the basis of the above-mentioned embodiments, as a preferred embodiment, as shown in Figures 3 to 5 , the traveling wheel pair device 13 is symmetrically arranged in pairs with respect to the central vertical plane of the tunnel segment 2, further ensuring the stability of traveling.

[0045] On the basis of the above-mentioned embodiments, as a preferred embodiment, the first telescopic device 12 is a stepping cylinder or a lead screw. As shown in Figure 2 , when the first telescopic device 12 is a stepping cylinder, a hydraulic pump station system 7 capable of self-generating electricity is adopted, and the hydraulic pump station system 7 and the supporting electrical control system 8 are both installed on the rear supporting system 1 of the tunneling machine; when the first telescopic device 12 is a lead screw, convenient telescoping can also be achieved through an electric control method.

[0046] On the basis of the above-mentioned embodiments, as a preferred embodiment, the support structure 9 includes a bottom arc structure 14 and side arc structures 15 detachably connected to both ends of the bottom arc structure 14. The detachable design structure can remove the bottom arc structure 14 according to needs, facilitating the passage of the rubber-tyred vehicle 6 during other construction operations. The traveling device, the tightening mechanism, and the first telescopic device are all connected to the side arc structure 15. Preferably, the traveling device is arranged at the lower end of the side arc structure 15, the tightening mechanism is arranged in the upper half of the side arc structure 15, and the first telescopic device is arranged in the middle of the side arc structure 15.

[0047] On the basis of the above-mentioned embodiments, as a preferred embodiment, the circular arc structure formed by the bottom arc structure 14 and the side arc structures 15 is concentric with the tunnel segment 2, which can further ensure the stability of the traveling process; both ends of the two side arc structures 15 facing away from the bottom arc structure 14 are provided with top lifting lugs 16, facilitating the rapid hoisting of the side arc structures 15 in the tunnel.

[0048] On the basis of the above-mentioned embodiments, as a preferred embodiment, the tightening mechanism includes a second telescopic device 11 hinged to the side arc structure 15, and a support member 10 is hinged between the second telescopic device and the side arc structure 15. When the second telescopic device 11 extends, the support member 10 can press against the inner wall of the tunnel segment 2. When the second telescopic device 11 retracts, the support structure 9 disengages from the tunnel segment 2 and can move relative to the tunnel segment 2. Of course, the elongation amount of the second telescopic device 11 can also be controlled, thereby adjusting the gap between the support member 10 and the inner wall of the tunnel segment 2, and further adapting to the traveling process of the self-driven traveling device. The specific selection of the second telescopic device 11 can refer to the first telescopic device 12, and either an oil cylinder or a lead screw can be selected, and those skilled in the art can implement it by themselves.

[0049] Based on the above embodiment, as a preferred embodiment, the support member 10 is an arc-shaped plate, and the use of the arc-shaped plate can further improve the reliability of the tightening or friction. Preferably, the two arc-shaped plates on the side arc-shaped structures 15 on both sides are symmetrical.

[0050] On the basis of the above embodiments, as a preferred embodiment, a clearance groove 17 for the pipeline of the tunnel boring machine is provided on the side arc structure 15. For example, the clearance groove 17 is used as the passing space of the water inlet pipe 4 and the return pipe 5 of the tunnel boring machine, and can also be used as the passing space of other pipelines.

[0051] On the basis of the above embodiments, as a preferred embodiment, the bottom arc structure 14, the side arc structure 15, and the support member 10 are all steel structures.

[0052] As a preferred embodiment of the present invention, Figure 2 As shown, it mainly includes: a hydraulic pump station system 7 that can generate electricity by itself, an electrical control system 8, a supporting structure 9, a supporting member 10, a second telescopic device 11, a first telescopic device 12, a walking wheel set device 13, a top lifting lug 15, etc. and a bottom arc structure 14. The first telescopic device 12 is a tightening cylinder, the second telescopic device 11 is a step-changing cylinder, and the supporting structure 9 is a supporting steel structure.

[0053] The self-generating hydraulic pump station device 7 is installed on the rear supporting system 1 of the tunnel boring machine, specifically on the rear supporting trailer. The supporting steel structure is designed with a step-changing cylinder ear seat 901, a tightening cylinder mounting ear seat 902, a supporting steel structure tightening ear seat 903, etc. The top of the supporting steel structure is designed with a top lifting ear 15 for quick and convenient in-hole lifting, and the bottom is designed with a bottom arc structure 14.

[0054] One end of the step-changing oil cylinder is connected to the trailer ear seat 101 welded on the trailer column, and the other end is connected to the step-changing oil cylinder ear seat 901 on the supporting steel structure.

[0055] like Figure 3 As shown, one end of the support member 10 is connected to the support steel structure tightening ear seat 903 through a pin, and the ear seat 904 at the other end of the support member 10 is connected to the piston end of the tightening cylinder through a pin. The cylinder end of the tightening cylinder is connected to the tightening cylinder mounting ear seat 902 in the support steel structure.

[0056] After the power-on debugging is completed, operate the electrical control box 8, such as Figure 4 In the loosened state, the tightening cylinder is retracted, the tightening member 10 is separated from the tunnel segment 2, and then the step-changing cylinder is controlled to extend, driving the supporting steel structure to move backward toward the starting well under the action of the walking wheel set device 13.

[0057] After the step-changing oil cylinder 12 extends to reach the designed stroke, the tightening oil cylinder extends, and the tightening member 10 rotates around the center of the mounting ear seat 902 of the tightening oil cylinder. As shown in Figure 3 the tightened state. After the tightening member 10 abuts against the tunnel segment 2, the step-changing oil cylinder contracts, driving the rear supporting system 1 of the tunneling machine to retreat towards the launching shaft. After the contraction action ends, a backward movement step-changing stroke is completed. As shown in Figure 6 the step-changing action.

[0058] By circulating this action, the function of the rear supporting system 1 of the tunneling machine to retreat by itself to the launching shaft is realized.

[0059] In the support steel structure, through spaces for the water inlet pipe 4 and the water return pipe 5 are reserved in the design. The bottom arc-shaped structure 14 is connected by bolts, and the bottom detachable steel structure 14 can be removed according to needs, facilitating the passage of other construction operations of the rubber-tyred vehicle 6. As shown in Figure 5 the passing state.

[0060] In the present invention, by designing a self-retreating device for the rear supporting system of the tunneling machine, the deficiencies that when the rear supporting trailer is prone to roll and the transportation route is occupied and interrupted by the rubber-tyred vehicle during the conventional traction and retreat using the rubber-tyred vehicle are avoided, and the function of the rear supporting system to retreat by itself is realized.

[0061] The details not elaborated in the present utility model are all well-known conventional technical means in the art.

[0062] The above content shows and describes the basic principle, main features and beneficial effects of the present utility model. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A moving mechanism for a tunnel boring machine, characterized in that: It includes a support structure (9) connected to the passive device and adapted to the inner wall of the tunnel segment (2), and the support structure (9) is provided with a self-driven traveling device; or the support structure (9) is connected to a tightening mechanism adapted to the tunnel segment (2) and is connected to the passive device through a first telescopic device (12).

2. The mobile mechanism for a tunnel boring machine according to claim 1, wherein: The traveling device includes a driving motor, a reducer, a transmission device, and a wheel pair device (13) connected in sequence.

3. The mobile mechanism for a tunnel boring machine according to claim 2, characterized in that: The wheel pair device (13) is symmetrically arranged in pairs with respect to the central vertical plane of the tunnel segment (2).

4. The moving mechanism for a tunnel boring machine according to claim 1, characterized in that: The first telescopic device (12) is a step-changing oil cylinder or a lead screw.

5. The mobile mechanism for a tunnel boring machine according to any one of claims 1-4, characterized in that: The support structure (9) includes a bottom arc structure (14) and side arc structures (15) detachably connected to both ends of the bottom arc structure (14), and the traveling device, the tightening mechanism, and the first telescopic device are all connected to the side arc structure (15).

6. The moving mechanism for a tunnel boring machine according to claim 5, characterized in that: The circular arc structure formed by the bottom arc structure (14) and the side arc structures (15) is concentric with the tunnel segment (2), and top lifting lugs (16) are provided at one end of each of the two side arc structures (15) facing away from the bottom arc structure (14).

7. The mobile mechanism for a tunnel boring machine according to claim 6, characterized in that: The tightening mechanism includes a second telescopic device (11) hinged to the side arc structure (15), and a support member (10) is hinged between the second telescopic device and the side arc structure (15).

8. The moving mechanism for a tunnel boring machine according to claim 7, characterized in that: The support member (10) is an arc-shaped plate.

9. The mobile mechanism for a tunnel boring machine according to claim 7 or 8, characterized in that: A relief groove (17) for the tunneling machine pipeline is provided on the side arc structure (15).

10. The moving mechanism for a tunnel boring machine according to claim 9, characterized in that: The bottom arc structure (14), the side arc structure (15), and the support member (10) are all made of steel structure.

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