Small-diameter tmb integrated slagging structure and tunnel boring machine

Abstract

The present application relates to a kind of small diameter TBM integrated slagging structure and tunnel boring machine, small diameter TBM integrated slagging structure includes cutter head device, slagging device and transport slag device.Slagging device is set on the inner side of cutter head body, and the inlet end of slagging device is connected with spade mechanism.Transport slag device includes belt conveyor, first arc-shaped guide slag plate, second arc-shaped guide slag plate, receiving hopper and guide rail, guide rail is horizontally arranged, and the symmetry axis of guide rail is parallel with the central axis of cutter head body.Belt conveyor is slidably connected with guide rail, first arc-shaped guide slag plate is connected with the first side of belt conveyor, and second arc-shaped guide slag plate is connected with the second side of belt conveyor.Receiving hopper is arranged between first arc-shaped guide slag plate and second arc-shaped guide slag plate.When needing to check cutter and change cutter in hole, belt conveyor exits inner cavity along guide rail, to provide required space for operating personnel to enter the back of cutter head for inspection or tool replacement, and operating personnel can enter the back of cutter head body for operation through inner cavity, to improve work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of small-diameter TBMs, and in particular to an integrated slag discharge structure and a tunnel boring machine for small-diameter TBMs. Background Art

[0002] Currently, full-face rock tunnel boring machines (TBMs) mostly use belt conveyors for slag removal. Generally speaking, due to the larger space available, medium- and large-diameter TBMs (tunnel boring machines) utilize a peripheral cutterhead drive arrangement. The slag collection mechanism and slag discharge system are located in the center of the cutterhead. Blades positioned around the cutterhead transfer slag from the bottom of the cutterhead through the slag chute to the slag collection mechanism, where it is then transported out of the tunnel by a belt conveyor located below the slag collection mechanism. Because TBMs are used for hard rock excavation, tool changes are frequent. Furthermore, due to the high vibration of the cutterhead, tool mounting accessories can easily loosen. Therefore, space must be reserved in the center of the cutterhead for access for personnel and tool transfer.

[0003] When the excavation diameter of the tunnel boring machine is small, a small-diameter TBM is required. A small-diameter TBM has a cutterhead diameter of less than 1.8-3.5 meters. The cutterhead drive unit of a small-diameter TBM occupies most of the internal space. After the deslagging system is installed, the deslagging system further occupies the already narrow internal space, resulting in the small-diameter TBM being unable to provide the required access space for personnel. Therefore, how to provide a new deslagging structure that can meet the deslagging requirements of small-diameter cutterheads while providing the required access for personnel is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a small-diameter TBM integrated slag discharge structure and a tunnel boring machine, which solves the technical problem that a small-diameter TBM cannot provide the passage space required for personnel entry and exit.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the small-diameter TBM integrated slag discharge structure of the present invention comprises: a cutterhead device, a slag chute device and a slag transport device;

[0008] The cutter disc device includes a cutter disc body and a roller cutter mechanism and a scraper mechanism arranged on the outer side of the cutter disc body;

[0009] The slag sliding device is arranged on the inner side surface of the cutter head body, and the inlet end of the slag sliding device is connected to the scraper mechanism;

[0010] The slag conveying device comprises a belt conveyor, a first arc-shaped slag guide plate, a second arc-shaped slag guide plate, a receiving hopper and a guide rail, the guide rail is horizontally arranged, and the symmetry axis of the guide rail is parallel to the central axis of the cutter body;

[0011] The belt conveyor is slidingly connected to the guide rail, and the first end of the belt conveyor can partially coincide with the outlet end of the slag chute in a vertical plane.

[0012] The first arc-shaped slag guide plate is connected to the first side of the belt conveyor, the second arc-shaped slag guide plate is connected to the second side of the belt conveyor, and both are close to the first end of the belt conveyor, and the slag chute can rotate around the first arc-shaped slag guide plate and the second arc-shaped slag guide plate.

[0013] The receiving hopper is arranged between the first arc-shaped slag guide plate and the second arc-shaped slag guide plate.

[0014] Optionally, the first arc-shaped slag guide plate and the second arc-shaped slag guide plate are symmetrically arranged with respect to the median plane of the belt conveyor, and the median plane is parallel to the central axis of the cutter body.

[0015] The central axes of the first arc-shaped slag guide plate and the second arc-shaped slag guide plate are collinear with the central axis of the cutter body.

[0016] The first side of the receiving hopper is connected to the upper side of the first arc-shaped slag guide plate, the second side of the receiving hopper is connected to the upper side of the second arc-shaped slag guide plate, and the first side plate and the second side of the receiving hopper are a pair of opposite sides.

[0017] Optionally, the slag chute comprises a first slag chute plate and a second slag chute plate, the first end of the first slag chute plate is connected to the spade mechanism, and the second end of the first slag chute plate is connected to the first end of the second slag chute plate.

[0018] The first slag chute plate is arranged along the axial direction of the cutter body, and the second slag chute plate is arranged along the radial direction of the cutter body.

[0019] The projections of the second slag chute plate and the first arc-shaped slag guide plate on the median plane coincide, and the projections of the second slag chute plate and the second arc-shaped slag guide plate on the median plane coincide.

[0020] Optionally, a gap is provided between the second end of the second slag chute plate and the outer surface of the first arc-shaped slag guide plate, and a gap is provided between the second end of the second slag chute plate and the outer surface of the second arc-shaped slag guide plate.

[0021] Optionally, a first limiting plate and a second limiting plate are arranged on the guide rail, and the belt conveyor is located between the first limiting plate and the second limiting plate.

[0022] Optionally, the slag conveying device further comprises a driving assembly connected with the belt conveyor to drive the belt conveyor to move on the guide rail.

[0023] Optionally, the driving assembly is a hydraulic cylinder, and a piston rod of the hydraulic cylinder is hingedly connected with the second end of the belt conveyor.

[0024] Optionally, the cutter head base body comprises a panel, a circular ring, a connecting sleeve and a flange.

[0025] The connecting sleeve is a tapered pipe, a diameter of a first end of the connecting sleeve is larger than that of a second end, the panel is arranged at a first end of the circular ring, the first end of the connecting sleeve is connected with a second end of the circular ring, and the second end of the connecting sleeve is connected with the flange.

[0026] The rolling cutter mechanism and the spade cutter mechanism are arranged on the panel.

[0027] Optionally, the rolling cutter mechanism comprises a plurality of center rolling cutters, a plurality of front rolling cutters and a plurality of edge rolling cutters.

[0028] The center rolling cutters are detachably arranged in a center region of the panel, the front rolling cutters are detachably arranged in a front region of the panel, and the edge rolling cutters are detachably arranged in an edge region of the panel.

[0029] Further, the application further provides a tunnel boring machine comprising a shell, a front shield, a driving device and a small-diameter TBM integrated slag discharging structure as described above.

[0030] The cutter head base body is rotationally connected with the shell, the driving device is arranged on an inner wall of the shell, and the driving device is connected with the cutter head base body to drive the cutter head base body to rotate.

[0031] A through hole is arranged on the shell, the front shield is arranged in the shell, and the front shield can extend out of the through hole to abut against a side wall of a tunnel.

[0032] (Three) beneficial effects

[0033] The intermediate slagging mode is adopted, the driving device of the cutter head is arranged at the outer periphery, the torque capacity of the cutter head driving is improved, and the tunneling efficiency is improved. When the cutter needs to be checked and replaced in the hole, the belt conveyor retreats along the guide rail until it leaves the inner cavity, avoids occupying the internal space, provides the required space for the operating personnel to enter the back of the cutter head for inspection or cutter replacement, the operating personnel can enter the back of the cutter head body through the inner cavity for operation, and the working efficiency is improved. The first end of the belt conveyor can partially coincide with the outlet end of the slagging device in the vertical plane, when the cutter head body rotates to a certain angle, the outlet of the slagging device is located above the first end of the belt conveyor, the slag on the slagging device falls onto the belt conveyor under the action of its own gravity, and the slag is transported out of the hole through the belt conveyor. The related structure of the slag receiving hopper is directly integrated in the belt conveyor, the structure is compact, the volume of the slag conveying device is effectively reduced, and the small-diameter TBM is installed. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The structure diagram of the cutter head body of the small-diameter TBM integrated slagging structure of the application;

[0035] Figure 2 The structure diagram of the slag conveying device of the small-diameter TBM integrated slagging structure of the application;

[0036] Figure 3 The Figure 2 The sectional view at A-A;

[0037] Figure 4 The Figure 3 The enlarged view at B.

[0038] EXPLANATION OF REFERENCE NUMERALS

[0039] 1: panel; 2: belt conveyor; 3: cutter head body; 4: cutter mechanism; 5: shovel mechanism; 6: flange; 7: second slagging plate; 8: first slagging plate; 91: first arc-shaped slag guide plate; 92: second arc-shaped slag guide plate; 10: connecting sleeve; 11: receiving hopper; 12: driving device; 13: front shield; 14: first limiting plate; 15: second limiting plate; 16: guide rail; 17: hydraulic cylinder. DETAILED DESCRIPTION

[0040] In order to better explain the application, so as to be understood, the application is described in detail by specific embodiments in combination with the drawings. Wherein, the orientation of the "upper", "lower" and other orientation terms mentioned in this paper is referred to the orientation of the drawings. Figure 1 .

[0041] While the exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be carried out in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0042] As shown in Figure 1 and Figure 2 , the present application provides a small-diameter TBM integrated slagging structure suitable for small-diameter TBM, which comprises a cutter head device, a slagging device and a slagging device. The cutter head device comprises a cutter head body 3 and a hob mechanism 4 and a shovel mechanism 5 arranged on the outer side of the cutter head body 3, the outer side of the cutter head body 3 faces the wall to be excavated, a notch is opened at the edge of the cutter head body 3, and the shovel mechanism 5 is installed at the notch for collecting slag cut by the hob mechanism 4. The slagging device is arranged on the inner side of the cutter head body 3, the inlet end of the slagging device is connected with the shovel mechanism 5, the slagging device is used to receive the slag collected by the shovel mechanism 5, and when the cutter head body 3 rotates to a certain angle, the slag moves along the slagging device due to gravity. The slagging device comprises a belt conveyor 2, a first arc-shaped slag guide plate 91, a second arc-shaped slag guide plate 92, a receiving hopper 11 and a guide rail 16, the guide rail 16 is horizontally arranged, and the symmetry axis of the guide rail 16 in the length direction of itself is parallel to the central axis of the cutter head body 3. The belt conveyor 2 is slidingly connected with the guide rail 16, so that the belt conveyor 2 can move in the direction parallel to the central axis of the cutter head body 3. The intermediate slagging mode is adopted, which facilitates the arrangement of the cutter head driving device 12 at the outer periphery, thereby improving the torque capacity of the cutter head driving, and further improving the tunneling efficiency. When it is necessary to check and replace the cutter in the hole, the belt conveyor 2 retreats along the guide rail 16 until it leaves the inner cavity, avoiding occupying the internal space, providing the required space for the operating personnel to enter the back of the cutter head for inspection or cutter replacement, and the operating personnel can enter the back of the cutter head body 3 through the inner cavity for operation, thereby improving the work efficiency. The first end of the belt conveyor 2 can partially coincide with the outlet end of the slagging device in the vertical plane, when the cutter head body 3 rotates to a certain angle, the outlet of the slagging device is located above the first end of the belt conveyor 2, the slag on the slagging device falls onto the belt conveyor 2 due to its own gravity, and the slag is transported out of the hole through the belt conveyor 2.

[0043] As shown in Figure 2 , Figure 3 and Figure 4As shown, the first arc-shaped slag guide plate 91 is connected to the first side of the belt conveyor 2, the second arc-shaped slag guide plate 92 is connected to the second side of the belt conveyor 2, the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 clamp the belt conveyor 2, thereby forming a slag receiving hopper with a cross section similar to a bracket, the opening at the upper part of the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 serves as a channel for the slag to enter the belt conveyor 2, and the receiving hopper 11 is installed at the opening to avoid improving the efficiency of slag collection. The first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 are close to the first end of the belt conveyor 2, and when the cutter body 3 rotates, the slag chute device always rotates around the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92, and when the outlet of the slag chute device rotates to the opening at the upper part of the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92, the slag in the slag chute device enters the belt conveyor 2 through the opening. The related structure of the slag receiving hopper is directly integrated into the belt conveyor 2, the structure is compact, and the volume of the slag conveying device is effectively reduced to facilitate installation in a small-diameter TBM.

[0044] Specifically, as shown in Figure 3 and Figure 4 , the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 are symmetrically arranged with the median plane of the belt conveyor 2, and the median plane is parallel to the central axis of the cutter body 3. The central axes of the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 are collinear with the central axis of the cutter body 3, and the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 form a sleeve coaxial with the central axis of the cutter body 3, which is sleeved on the belt conveyor 2, so that the slag chute device always rotates around the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 when the cutter body 3 rotates. The top of the sleeve is provided with an opening for the slag to enter, and when the outlet of the slag chute device rotates above the opening, the slag enters the belt conveyor 2 through the opening. The first side of the receiving hopper 11 is connected to the upper side of the first arc-shaped slag guide plate 91, the second side of the receiving hopper 11 is connected to the upper side of the second arc-shaped slag guide plate 92, and the first side plate and the second side plate of the receiving hopper 11 are a pair of opposite side plates.

[0045] Referring to Figure 2 and Figure 3The slag conveying device comprises a first slag chute 8 and a second slag chute 7. The first end of the first slag chute 8 is connected with the cutter mechanism 5, and is used for receiving the slag collected by the cutter mechanism 5. The second end of the first slag chute 8 is connected with the first end of the second slag chute 7. The slag slides along the first slag chute 8 and the second slag chute 7 to the second end of the second slag chute 7. The first slag chute 8 is arranged along the axial direction of the cutter body 3, and the second slag chute 7 is arranged along the radial direction of the cutter body 3. The projection of the second slag chute 7 and the first arc-shaped slag guide plate 91 on the median plane coincides, and the projection of the second slag chute 7 and the second arc-shaped slag guide plate 92 on the median plane coincides. The first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 have a closing effect on the second end of the second slag chute 7 in the radial direction, so as to prevent the slag collected by the cutter mechanism 5 from directly falling into the inner cavity of the cutter mechanism due to gravity when the cutter mechanism 5 rotates to above the horizontal plane of the central axis and is still not above the receiving hopper 11, and the slag cannot be smoothly received by the receiving hopper 11 and then dropped onto the belt conveyor 2 for transportation. A gap is arranged between the second end of the second slag chute 7 and the outer surface of the first arc-shaped slag guide plate 91, and a gap is arranged between the second end of the second slag chute 7 and the outer surface of the second arc-shaped slag guide plate 92. The gap value is as small as possible, but it is necessary to ensure that the second slag chute 7 does not interfere with the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 when the cutter body 3 rotates. The size of the outer arc surface of the first arc-shaped slag guide plate 91 and the second arc-shaped slag guide plate 92 should not be greater than the maximum passing diameter allowed by the inner cavity.

[0046] As shown in Figure 2 , the front and rear positions of the guide rail 16 are provided with bolted first and second limiting plates 14 and 15, and the belt conveyor 2 is located between the first and second limiting plates 14 and 15. The first and second limiting plates 14 and 15 are used to limit the movement range of the belt conveyor 2, so as to prevent the belt conveyor 2 from sliding out of the guide rail 16 when moving, and improve the stability of the belt conveyor 2. The belt conveyor 2 is in a fixed state during normal operation, so as to stably receive the slag conveyed by the second slag chute 7, and is in a sliding state only when the parts on the cutter body 3 need to be maintained. The slag conveying device further comprises a driving assembly, which is a hydraulic cylinder 17. The cylinder body of the hydraulic cylinder 17 is hinged in the interior of the shell, and the top end of the piston rod of the hydraulic cylinder 17 is hinged with the second end of the belt conveyor 2. When the belt conveyor 2 is in normal operation, the hydraulic cylinder 17 is pressurized, so as to provide stable support force for the belt conveyor 2, so that the belt conveyor 2 is in a fixed state. When the small-diameter TBM needs to check and replace the cutter in the hole, the belt conveyor 2 is first driven to retreat along the guide rail 16 until it leaves the inner cavity by the hydraulic cylinder 17, so that the operator can enter the back of the cutter to work. If the cutter needs to be transported and replaced, the belt conveyor 2 can also be transported through this channel.

[0047] Referring to Figure 2The cutter head base body comprises a face plate 1, a circular ring, a connecting sleeve 10 and a flange 6, the connecting sleeve 10 is a tapered pipe, the diameter of the first end of the connecting sleeve 10 is larger than the diameter of the second end, the face plate 1 is arranged at the first end of the circular ring, and the central axis of the circular ring is collinear with the central axis of the face plate 1. The first end of the connecting sleeve 10 is connected with the second end of the circular ring, the second end of the connecting sleeve 10 is connected with the flange 6, and the flange 6 is used for connecting the driving device 12. The hob mechanism 4 is arranged on the face plate 1, the edge of the face plate 1 is provided with a notch, and the spade mechanism 5 is installed in the notch. Preferably, the hob mechanism 4 comprises a plurality of center hobs, a plurality of front hobs and a plurality of edge hobs, the center hobs are detachably arranged in the center area of the face plate 1, the front hobs are detachably arranged in the front area of the face plate 1, and the edge hobs are detachably arranged in the edge area of the face plate 1, so that the rock cutting efficiency is improved.

[0048] Further, the application also provides a tunnel boring machine comprising a shell, a front shield 13, a driving device 12 and a small-diameter TBM integrated slag discharge structure. The cutter head body 3 is rotationally connected with the shell, the driving device 12 is arranged on the inner wall of the shell and deviates from the central axis of the shell, the driving device 12 is connected with the flange 6 to drive the cutter head body 3 to rotate. A through hole is arranged on the shell, and the front shield 13 is arranged in the shell and can extend out of the through hole to abut against the side wall of the tunnel.

[0049] The application adopts an intermediate slag discharge mode, the driving device 12 of the cutter head is arranged at the outer periphery, the torque transmission capacity of the cutter head driving is improved, and the tunneling efficiency is improved. When the cutter needs to be checked and replaced in the hole, the belt conveyor 2 retreats along the guide rail 16 until it leaves the inner cavity, so as to avoid occupying the internal space and provide the required space for the operating personnel to enter the back of the cutter head to check or replace the cutter, the operating personnel can enter the back of the cutter head body 3 through the inner cavity to work, and the working efficiency is improved. The first end of the belt conveyor 2 can be partially coincident with the outlet end of the slag chute in the vertical plane, when the cutter head body 3 is rotated to a specific angle, the outlet of the slag chute is located above the first end of the belt conveyor 2, the slag on the slag chute falls onto the belt conveyor 2 under the action of its own gravity, and the slag is transported out of the hole through the belt conveyor 2. The related structure of the slag receiving bucket is directly integrated into the belt conveyor 2, the structure is compact, the volume of the slag conveying device is effectively reduced, and the small-diameter TBM is facilitated to be installed.

[0050] In the description of the application, it should be understood that the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0051] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixedly connected" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected via an intermediate medium; can be internal communication of two elements, or interaction between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0053] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0054] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can modify, modify, replace and change the above embodiments within the scope of the present application.

Claims

1. A small diameter TBM integrated slagging structure, characterized in that, The small-diameter TBM integrated slagging structure comprises a cutter head device, a slagging device and a slag conveying device; The cutter head device comprises a cutter head body (3) and a hob mechanism (4) and a spade mechanism (5) arranged on the outer side of the cutter head body (3); The slagging device is arranged on the inner side of the cutter head body (3), and the inlet end of the slagging device is connected with the spade mechanism (5); The slag conveying device comprises a belt conveyor (2), a first arc-shaped slag guide plate (91), a second arc-shaped slag guide plate (92), a receiving hopper (11) and a guide rail (16), the guide rail (16) is horizontally arranged, and the symmetry axis of the guide rail (16) is parallel to the central axis of the cutter head body (3); The belt conveyor (2) is slidably connected with the guide rail (16), and the first end of the belt conveyor (2) can partially coincide with the outlet end of the slagging device in the vertical plane; The first arc-shaped slag guide plate (91) is connected with the first side of the belt conveyor (2), the second arc-shaped slag guide plate (92) is connected with the second side of the belt conveyor (2), and both are close to the first end of the belt conveyor (2), and the slagging device can rotate around the first arc-shaped slag guide plate (91) and the second arc-shaped slag guide plate (92); The receiving hopper (11) is arranged between the first arc-shaped slag guide plate (91) and the second arc-shaped slag guide plate (92); The first arc-shaped slag guide plate (91) and the second arc-shaped slag guide plate (92) are symmetrically arranged with respect to the median plane of the belt conveyor (2), and the median plane is parallel to the central axis of the cutter head body (3); The central axes of the first arc-shaped slag guide plate (91) and the second arc-shaped slag guide plate (92) are collinear with the central axis of the cutter head body (3); The first side of the receiving hopper (11) is connected with the upper side of the first arc-shaped slag guide plate (91), the second side of the receiving hopper (11) is connected with the upper side of the second arc-shaped slag guide plate (92), and the first side and the second side of the receiving hopper (11) are a pair of opposite sides; The slagging device comprises a first slagging plate (8) and a second slagging plate (7), the first end of the first slagging plate (8) is connected with the spade mechanism (5), and the second end of the first slagging plate (8) is connected with the first end of the second slagging plate (7); The first slagging plate (8) is arranged along the axial direction of the cutter head body (3), and the second slagging plate (7) is arranged along the radial direction of the cutter head body (3); The projections of the second slagging plate (7) and the first arc-shaped slag guide plate (91) on the median plane coincide, and the projections of the second slagging plate (7) and the second arc-shaped slag guide plate (92) on the median plane coincide.

2. The small diameter TBM integrated cinder structure of claim 1, wherein, A gap is arranged between the second end of the second slagging plate (7) and the outer surface of the first arc-shaped slag guide plate (91), and a gap is arranged between the second end of the second slagging plate (7) and the outer surface of the second arc-shaped slag guide plate (92).

3. The small diameter TBM integrated cinder structure of claim 1 or 2, wherein, The guide rail (16) is provided with a first limiting plate (14) and a second limiting plate (15), and the belt conveyor (2) is located between the first limiting plate (14) and the second limiting plate (15).

4. The small diameter TBM integrated slagging structure of claim 1 or 2, wherein, The slag conveying device further comprises a driving assembly connected with the belt conveyor (2) to drive the belt conveyor (2) to move on the guide rail (16).

5. The small diameter TBM integrated cinder structure of claim 4, wherein, The driving assembly is a hydraulic cylinder (17), and a piston rod of the hydraulic cylinder (17) is hinged to a second end of the belt conveyor (2).

6. The small diameter TBM integrated cinder structure of claim 1 or 2, wherein, The cutter head base body comprises a face plate (1), a circular ring, a connecting sleeve (10), and a flange (6); The connecting sleeve (10) is a tapered pipe, a diameter of a first end of the connecting sleeve (10) is larger than a diameter of a second end, the face plate (1) is arranged at a first end of the circular ring, the first end of the connecting sleeve (10) is connected with a second end of the circular ring, and the second end of the connecting sleeve (10) is connected with the flange (6); The hob mechanism (4) and the spade mechanism (5) are arranged on the face plate (1).

7. The small diameter TBM integrated cinder structure of claim 6, wherein, The hob mechanism (4) comprises a plurality of center hobs, a plurality of front hobs, and a plurality of edge hobs. The center hobs are detachably arranged in a center region of the face plate (1), the front hobs are detachably arranged in a front region of the face plate (1), and the edge hobs are detachably arranged in an edge region of the face plate (1).

8. A tunnel boring machine characterized by, The tunnel boring machine comprises a shell, a front shield (13), a driving device (12), and the small-diameter TBM integrated slag discharging structure according to any one of claims 1-7; The cutter head base body (3) is rotationally connected with the shell, the driving device (12) is arranged on an inner wall of the shell, and the driving device (12) is connected with the cutter head base body (3) to drive the cutter head base body (3) to rotate; A through hole is formed in the shell, the front shield (13) is arranged in the shell, and the front shield (13) can extend out of the through hole to abut against a side wall of a tunnel.

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