TBM cutterhead structure and TBM

Abstract

This invention discloses a TBM cutterhead structure and a TBM. The TBM cutterhead structure includes a cutterhead body, with a slag collection cylinder at its center. Several slag outlets are sequentially arranged circumferentially through the side wall of the slag collection cylinder. One axial end of the slag collection cylinder is sealed by the cutterhead panel, and the other end is connected to a back plate hole on the cutterhead back plate. Each slag outlet is respectively provided with a slag chute. The slag chute includes a slag inlet and a corresponding slag chute. The slag inlet is located through the edge of the cutterhead panel. The radial ends of the slag chute are sealed to the cutterhead side plate and the slag collection cylinder, respectively, and the axial ends are sealed to the cutterhead panel and the cutterhead back plate, respectively. The slag chute is inclined relative to the axial direction. The connection lines between the slag chute and the cutterhead panel, and between the slag chute and the cutterhead back plate, are sequentially arranged circumferentially away from the corresponding slag inlet. The inclined slag chute can assist the movement of slag towards the cutterhead back plate in the axial direction, making it easier for the slag to be discharged from the cutterhead body.

Description

Technical Field

[0001] The present invention relates to the technical field of tunneling equipment, and in particular to a TBM cutterhead structure and a TBM. Background Art

[0002] There are many steeply inclined tunnels in coal mines and water conservancy projects. When using TBM (Tunnel Boring Machine) to dig diagonally from top to bottom, the cutter head will face the problem of difficulty in slag removal, especially when facing steeply inclined excavation, the slag is difficult to be transported backward and upward.

[0003] Therefore, how to make it easier to output the debris from the cutter disc structure is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a TBM cutterhead structure and a TBM including the TBM cutterhead structure, wherein the TBM cutterhead structure is more convenient for outputting debris.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A TBM cutterhead structure, including a cutterhead body, the cutterhead body including a cutterhead panel, a cutterhead side plate and a cutterhead back plate connected in sequence along the axial direction; a slag collecting barrel is provided in the center of the cutterhead body, and a plurality of slag outlets are sequentially penetrated on the side wall of the slag collecting barrel along the circumferential direction, one end of the slag collecting barrel in the axial direction is sealed by the cutterhead panel, and the other end in the axial direction is butted against the back plate hole on the cutterhead back plate; each of the slag outlets is respectively provided with a slag chute; the slag chute includes a slag inlet and a corresponding slag inclined plate sequentially arranged in the circumferential direction, the slag inlet penetrates the edge of the cutterhead panel, the radial ends of the slag inclined plate are respectively sealed and connected to the cutterhead side plate and the slag collecting barrel, and the axial ends are respectively sealed and connected to the cutterhead panel and the cutterhead back plate, the slag inclined plate is inclined relative to the axial direction, and the connection line of the slag inclined plate with the cutterhead panel and the connection line with the cutterhead back plate are sequentially arranged along the circumferential direction and away from the corresponding slag inlet.

[0007] Preferably, the slag chute also includes a slag guiding inclined plate arranged between the slag inlet and the corresponding slag guiding inclined plate, and the slag guiding inclined plate is circumferentially connected to the corresponding slag inlet; the slag guiding inclined plate is inclined close to the side of the cutter disc back plate, and the inclination direction is gradually approaching the cutter disc back plate along the circumferential direction and away from the corresponding slag inlet; in the slag chute, the edge line of the slag guiding inclined plate close to the corresponding slag guiding inclined plate in the circumferential direction and the plane determined by the connecting line between the slag guiding inclined plate and the cutter disc panel are perpendicular to the axial direction.

[0008] Preferably, the slag guiding inclined plate comprises a bucket and a guide plate which are sequentially arranged along the circumferential direction and in a direction away from the corresponding slag inlet, and the inclination of the bucket is greater than the inclination of the guide plate.

[0009] Preferably, there is a gap between the slag guiding inclined plate and the corresponding slag sliding inclined plate in the circumferential direction.

[0010] Preferably, the slag outlet and the corresponding slag inlet are arranged on the same side of the corresponding slag sloping plate in the circumferential direction, and an axial end of the slag sloping plate is butted against a partial edge of the corresponding slag outlet.

[0011] Preferably, a transmission device is further included, one end of which extends into the interior of the slag collecting barrel.

[0012] Preferably, the slag slat plate is an arc-shaped plate, and the slag inlet corresponding to the slag slat plate is located on the concave side of the slag slat plate.

[0013] Preferably, there are at least two slag outlets, and each of the slag inlets is located on the same side of the corresponding slag chute inclined plate in the circumferential direction.

[0014] A TBM comprises a TBM cutterhead structure as described in any one of the above items.

[0015] The TBM cutter disc structure provided by the present invention comprises a cutter disc body, which comprises a cutter disc panel, a cutter disc side plate and a cutter disc back plate connected in sequence along the axial direction; a slag collecting barrel is provided at the center of the cutter disc body, and a plurality of slag outlets are sequentially penetrated on the side wall of the slag collecting barrel along the circumferential direction, one axial end of the slag collecting barrel is sealed by the cutter disc panel, and the other axial end is connected to the back plate hole on the cutter disc back plate; each slag outlet is respectively provided with a slag chute; the slag chute comprises a slag inlet and a corresponding slag inclined plate sequentially arranged along the circumferential direction, the slag inlet is penetrated through the edge of the cutter disc panel, the radial ends of the slag inclined plate are respectively sealed and connected to the cutter disc side plate and the slag collecting barrel, and the axial ends are respectively sealed and connected to the cutter disc panel and the cutter disc back plate, the slag inclined plate is inclined relative to the axial direction, and the connection line between the slag inclined plate and the cutter disc panel and the connection line between the slag inclined plate and the cutter disc back plate are sequentially arranged along the circumferential direction and away from the corresponding slag inlet.

[0016] Since the radial ends of the slag ramp are respectively sealed and connected to the cutter head side plates and the slag collecting barrel, the reliability of the slag transportation inside the cutter head body can be guaranteed. At the same time, since the slag ramp has an inclined tendency relative to the axial direction, it can provide assistance for the movement of the slag in the axial direction toward the cutter head back plate. Accordingly, when excavating inclined tunnels at large angles, the slag ramp has the function of conveying the slag to the rear and upper side of the cutter head back plate, so that the slag can be more easily discharged from the cutter head body.

[0017] The TBM provided by the present invention includes the TBM cutter head structure, and the TBM cutter head structure is easier to output debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 is a front view of the cutter head structure provided by the present invention;

[0020] Figure 2 The internal structure of the cutter head structure provided by the present invention when it rotates to the first position;

[0021] Figure 3 The internal structure of the cutter head structure provided by the present invention when it rotates to the second position;

[0022] Figure 4 This is a cross-sectional diagram of a TBM excavating at a high angle;

[0023] Figure 5 yes Figure 4 A partial enlarged view of .

[0024] Reference numerals:

[0025] Cutter disc panel 1, cutter disc back plate 2, slag inlet 3, bucket 4, slag guide inclined plate 5, slag chute inclined plate 6, slag outlet 7, slag collecting bin 8, transmission device 9, slag collecting cylinder 10, cutter disc side plate 11, cutter disc flange 12, guide plate 13. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The core of the present invention is to provide a TBM cutter head structure and a TBM comprising the TBM cutter head structure, wherein the TBM cutter head structure is more convenient for outputting debris.

[0028] It should be noted that when an element is referred to as "fixing" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention 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 understood as a limitation on the present invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] The TBM cutterhead structure provided by the present invention is specifically applied to inclined shaft TBM. In a specific embodiment, it includes a cutterhead body. The cutterhead body includes a cutterhead panel 1, a cutterhead side plate 11 and a cutterhead back plate 2 which are connected in sequence along the axial direction. The cutterhead panel 1, the cutterhead side plate 11 and the cutterhead back plate 2 are connected to form a closed cavity structure. Cutters are arranged on the cutterhead panel 1. During operation, the cutterhead panel 1 is located at the front of the cutterhead body, and the cutterhead back plate 2 is located behind the cutterhead panel 1 and extends to connect with the cutterhead flange 12 on the TBM body. In addition, the cutterhead body can be a prism or a cylinder.

[0031] A slag collecting barrel 10 is provided at the center of the cutter disc body, and a slag collecting bin 8 is formed inside the slag collecting barrel 10. Several slag outlets 7 are sequentially arranged on the side wall of the slag collecting barrel 10 along the circumferential direction. One axial end of the slag collecting barrel 10 is sealed by the cutter disc panel 1, and the other axial end is connected to the back plate hole on the cutter disc back plate 2, so that the slag collecting bin 8 is an open bin, and the slag collecting barrel 10 can discharge slag from the back plate hole. There are preferably at least two slag outlets 7, and of course, one can also be provided. Preferably, the slag outlets 7 are evenly distributed on the slag collecting barrel 10.

[0032] Each slag outlet 7 is respectively provided with a slag chute. Preferably, each slag chute is evenly distributed along the circumferential direction on the cutter disc body. A slag chute includes a slag inlet 3 and a corresponding slag inclined plate 6 arranged in sequence along the circumferential direction, wherein the slag inlet 3 and the slag inclined plate 6 of the same slag chute correspond to each other. The slag inlet 3 is provided through the edge of the cutter disc panel 1 to facilitate the entry of slag into the slag chute. The radial ends of the slag inclined plate 6 are respectively sealed and connected to the cutter disc side plate 11 and the slag collecting barrel 10, and the axial ends are respectively sealed and connected to the cutter disc panel 1 and the cutter disc back plate 2. The slag inclined plate 6 is arranged obliquely relative to the axial direction, and the connection line between the slag inclined plate 6 and the cutter disc panel 1, and the connection line between the same slag inclined plate 6 and the cutter disc back plate 2 are sequentially arranged along the circumferential direction and away from the corresponding slag inlet 3.

[0033] Specifically, the inclination angle between the slag sloping plate 6 and the axial direction is called the backward inclination angle. The larger the inclination angle of the TBM operation, the larger the backward inclination angle of the slag sloping plate 6 is preferably set. Optionally, the backward inclination angle ranges from 10-30°, and the maximum inclination angle of the TBM operation can reach 40-60°.

[0034] Preferably, there are at least two slag discharge ports 7, and each slag inlet 3 is located on the same side of the corresponding slag chute 6 in the circumferential direction, so as to ensure that each slag chute can discharge slag during one rotation. For example, in each slag chute, from the perspective of the cutter disc back plate pointing to the cutter disc face plate in the axial direction, the slag inlet 3 is located on the clockwise side of the corresponding slag chute 6, and when the cutter disc body rotates clockwise, each slag inlet 3 can shovel the slag into the bottom of the cutter disc body when it moves to the bottom of the cutter disc body in turn.

[0035] When diagonally excavating a tunnel at a large angle, the tunnel face is located obliquely below the cutterhead. Figure 4 In the perspective of the cutter head back plate pointing to the cutter head face plate in the axial direction, the slag inlet 3 and the corresponding slag chute 6 are arranged in sequence in the counterclockwise direction. During the excavation process, the cutter head rotates clockwise. Figure 2 and Figure 3 As shown, the designated slag inlet A among the slag inlets 3 on the cutter disc is taken as an example for explanation, and the same is true for other slag inlets 3. When the designated slag inlet A moves to the bottom with the cutter disc, the slag enters the slag inlet 3. As the cutter disc rotates, the slag slides along the slag chute inclined plate 6 toward the slag outlet 7. At the same time, based on the effect of inertia, the slag tends to move counterclockwise on the slag chute inclined plate 6. In addition, the slag chute inclined plate 6 has an axially inclined tendency, so that the slag on the slag chute inclined plate 6 moves counterclockwise along the slag chute inclined plate 6 and slides toward the cutter disc back plate 2. When the designated slag inlet A moves to the top of the cutter disc with the rotation of the cutter disc, the slag on the corresponding slag chute inclined plate 6 flows downward to the corresponding slag outlet 7 and enters the slag collecting barrel 10. The slag can be further discharged through the back plate hole.

[0036] In this embodiment, since the radial ends of the slag inclined plate 6 are respectively sealed and connected to the cutter disc side plate 11 and the slag collecting barrel 10, the reliability of the slag transportation inside the cutter disc body can be guaranteed. At the same time, since the slag inclined plate 6 has an inclined tendency relative to the axial direction, it can provide assistance for the movement of the slag in the axial direction toward the cutter disc back plate 2. Accordingly, when excavating a steeply inclined tunnel, the slag inclined plate 6 has the function of conveying the slag to the rear and upper side of the cutter disc back plate 2, so that the slag can be more easily discharged from the cutter disc body.

[0037] Furthermore, in the slag chute, a slag guide inclined plate 5 is provided between the slag inlet 3 and the corresponding slag chute inclined plate 6, and the slag guide inclined plate 5 is butted with the corresponding slag inlet 3 along the circumferential direction. The slag guide inclined plate 5 is inclined near the side of the cutter head back plate 2, and the inclination direction is gradually approaching the cutter head back plate 2 along the circumferential direction and away from the corresponding slag inlet 3. The slag guide inclined plate 5 is specifically a part of the structure constituting the cutter head panel 1.

[0038] Among them, preferably, Figure 2 As shown, the slag guide inclined plate 5 includes a bucket 4 and a guide plate 13 which are sequentially arranged along the circumferential direction and away from the corresponding slag inlet 3, and the inclination of the bucket 4 is greater than the inclination of the guide plate 13, so that the slag guide inclined plate 5 can more easily guide the slag into the inside of the cutter disc body at the part close to the slag inlet 3. Specifically, when the cutter disc rotates, the bucket 4 is located at the lower edge of the corresponding slag inlet 3, and the slag can be shoveled into the slag chute by utilizing the rotation of the cutter disc. The angle formed by the slag guide inclined plate 5 relative to the plane perpendicular to the axial direction is the rising angle. The setting of the rising angle can facilitate the slag to enter the cutter disc as the cutter disc rotates.

[0039] Preferably, there is a gap between the slag guiding inclined plate 5 and the corresponding slag sliding inclined plate 6 in the circumferential direction to ensure the connection strength between the slag sliding inclined plate 6 and the cutter head panel 1 and avoid the connection between the slag sliding inclined plate 6 and the relatively thin slag guiding inclined plate 5 .

[0040] In addition, in the slag chute, the edge line of the slag guiding inclined plate 5 close to the corresponding slag chute inclined plate 6 in the circumferential direction and the plane determined by the connecting line of the slag guiding inclined plate 5 and the cutter disc panel 1 are perpendicular to the axial direction, so that after the slag moves toward the cutter disc back plate 2 under the guidance of the slag guiding inclined plate 5, after reaching the slag chute inclined plate 6, it can further move toward the cutter disc back plate 2.

[0041] In this embodiment, the slag guiding inclined plate 5 and the slag sliding inclined plate 6 integrally form a slag sliding channel leading from the outer periphery of the cutter disc to the slag collecting bin 8 in the middle of the cutter disc, which can improve the fluidity of the slag in the cutter disc body and is conducive to slag collection.

[0042] Furthermore, the slag outlet 7 and the corresponding slag inlet 3 are arranged on the same side of the corresponding slag sloping plate 6 in the circumferential direction, such as Figure 2As shown, from the perspective of the cutter disc back plate pointing to the cutter disc face plate in the axial direction, the slag outlet 7 and the corresponding slag inlet 3 are located on the clockwise side of the corresponding slag chute 6. Among them, the slag outlet 7 and the various parts of the structure in the corresponding slag chute have a corresponding relationship. One axial end of the slag chute 6 is butted against the part of the edge of the corresponding slag outlet 7, so that the slag can slide along the slag chute 6 to the corresponding slag outlet 7 and can smoothly enter the slag outlet 7.

[0043] Furthermore, the cutter disc structure also includes a transmission device 9, which preferably extends along the axial direction of the cutter disc body. One end of the transmission device 9 extends into the interior of the slag collecting barrel 10, and the slag in the slag collecting bin 8 is further transmitted out through the transmission device 9. The transmission device 9 is specifically a belt slag transport system. More specifically, the cutter disc back plate 2 is connected to the cutter disc flange 12 of the TBM body, and the cutter disc back plate 2 rotates synchronously with the cutter disc flange 12. The transmission device 9 passes through the axis of the cutter disc body and the front end extends to the back plate hole, and specifically can be partially extended into the slag collecting bin 8. Since the transmission device 9 is arranged at the center of the cutter disc body, the transmission device 9 does not rotate with the cutter disc flange 12 and the cutter disc body. Alternatively, the slag collecting barrel 10 can also further extend axially out of the cutter disc body and be connected to the cutter disc flange 12.

[0044] Furthermore, the slag inclined plate 6 is an arc-shaped plate, and the slag inlet 3 corresponding to the slag inclined plate 6 is located on the concave side of the slag inclined plate 6. The arrangement of the arc-shaped slag inclined plate 6 can make the slag more smoothly transferred to the slag outlet 7. Of course, in other embodiments, the slag inclined plate 6 can also be a straight plate.

[0045] The working principle of the TBM cutterhead structure provided in this embodiment is as follows: during the excavation process, the cutterhead rotates continuously, and when a slag inlet 3 moves downward, the corresponding bucket 4 will shovel the slag at the bottom of the excavation surface into the slag guide inclined plate 5 in the slag chute; when the slag inlet 3 rotates upward to a certain position with the cutterhead, the slag will fall from the slag guide inclined plate 5 to the slag chute inclined plate 6; when the corresponding slag outlet 7 rotates to the top of the slag collecting bin 8, the slag will slide from the slag chute inclined plate 6 into the slag collecting bin 8, and then the transmission device 9 transports the slag out of the cutterhead body.

[0046] The TBM cutter head structure provided in this embodiment adopts a combination of a slag guiding inclined plate 5 and a slag sliding inclined plate 6. The slag guiding inclined plate 5 has a certain rising angle, and the slag sliding inclined plate 6 has a certain backward inclination angle, which can effectively solve the problem of slag discharge difficulty of the cutter head during TBM excavation at a large inclination angle. When the TBM is excavated at a large inclination angle, the cutter head can smoothly collect the slag into the slag collecting bin 8 in the middle of the cutter head. The structure is simple, the cost is low, and it is easy to implement.

[0047] In addition to the above-mentioned TBM cutterhead structure, the present invention also provides a TBM, which includes a TBM cutterhead structure, which can be specifically the TBM cutterhead structure provided in any of the above embodiments, and the beneficial effects can be referred to the above embodiments accordingly. The structures of other parts of the TBM can be referred to the prior art, and will not be repeated herein.

[0048] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0049] The above is a detailed introduction to the TBM cutterhead structure and TBM provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A TBM cutterhead structure, comprising a cutterhead body, wherein the cutterhead body comprises a cutterhead face plate (1), a cutterhead side plate (11) and a cutterhead back plate (2) connected in sequence along an axial direction; characterized in that: A slag collecting barrel (10) is provided at the center of the cutter disc body, and a plurality of slag outlets (7) are sequentially arranged along the circumferential direction and penetrate the side wall of the slag collecting barrel (10). One axial end of the slag collecting barrel (10) is sealed by the cutter disc panel (1), and the other axial end is butted against the back plate hole on the cutter disc back plate (2); each of the slag outlets (7) is respectively provided with a slag chute; the slag chute comprises a slag inlet (3) sequentially arranged along the circumferential direction and a corresponding slag chute (6), the slag inlet (3) penetrating The slag sloping plate (6) is arranged at the edge of the cutter disc panel (1), the two radial ends of the slag sloping plate (6) are respectively sealed to the cutter disc side plate (11) and the slag collecting barrel (10), and the two axial ends are respectively sealed to the cutter disc panel (1) and the cutter disc back plate (2), the slag sloping plate (6) is arranged obliquely relative to the axial direction, and the connection line between the slag sloping plate (6) and the cutter disc panel (1) and the connection line between the slag sloping plate (6) and the cutter disc back plate (2) are arranged in sequence along the circumferential direction and away from the corresponding slag inlet (3); The slag chute further comprises a slag guiding inclined plate (5) arranged between the slag inlet (3) and the corresponding slag guiding inclined plate (6), and the slag guiding inclined plate (5) is butted against the corresponding slag inlet (3) along the circumferential direction; the slag guiding inclined plate (5) is arranged to be inclined close to the side of the cutter disc back plate (2), and the inclination direction is gradually approaching the cutter disc back plate (2) along the circumferential direction and away from the corresponding slag inlet (3); in the slag chute, the edge line of the slag guiding inclined plate (5) close to the corresponding slag guiding inclined plate (6) in the circumferential direction and the plane defined by the connection line of the slag guiding inclined plate (6) and the cutter disc face plate (1) are perpendicular to the axial direction; The slag guiding inclined plate (5) comprises a bucket (4) and a guide plate (13) which are sequentially arranged along the circumferential direction and in a direction away from the corresponding slag inlet (3); The slag guiding inclined plate (5) and the corresponding slag sliding inclined plate (6) have a gap in the circumferential direction; The slag outlet (7) and the corresponding slag inlet (3) are arranged on the same side of the corresponding slag sloping plate (6) in the circumferential direction, and an axial end of the slag sloping plate (6) is butted against a portion of the edge of the corresponding slag outlet (7); The TBM cutterhead structure further comprises a transmission device (9), one end of the transmission device (9) extending into the interior of the slag collecting barrel (10); The slag sloping plate (6) is an arc-shaped plate, and the slag inlet (3) corresponding to the slag sloping plate (6) is located on the concave side of the slag sloping plate (6).

2. The TBM cutterhead structure according to claim 1, characterized in that: There are at least two slag outlets (7), and each of the slag inlets (3) is located on the same side of the corresponding slag sloping plate (6) in the circumferential direction.

3. A TBM, characterized in that: Including the TBM cutter head structure as described in claim 1 or 2.

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