A tunnel boring machine suitable for small-section tunnels

Abstract

The present invention discloses a tunnel boring machine suitable for small-section tunnels. By arranging a conveyor on the side of a fuselage and a star wheel assembly on a shovel board, materials on the shovel board can be moved from the side of the shovel board to the feeding port of the conveyor under the push of the star wheel assembly, so as to realize single-sided discharge of materials on the shovel board, and then discharge of materials through the conveyor located on the side of the fuselage. It can be seen that the tunnel boring machine provided by the present invention can replace the existing tunnel boring machine's discharge method between two star wheel assemblies through the design of the star wheel assembly located on the shovel board and the conveyor located on the side of the fuselage, so as to make the overall structure of the tunnel boring machine compact, thereby reducing the width of the entire machine of the tunnel boring machine, making it suitable for cutting hard rocks in small sections.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel boring machines, and in particular relates to a tunnel boring machine suitable for small-section tunnels. Background Art

[0002] The small-section tunnel excavation process in the prior art generally adopts blasting, excavation or tunnel boring machine excavation, among which blasting is highly dangerous and inefficient; the excavation efficiency is extremely low and cannot meet the work efficiency requirements; while the tunnel boring machine has high efficiency, safety and reliability, but the existing tunnel boring machine cannot operate small sections such as water conservancy and power tunnel construction below 2.5 meters (width) due to its body size. Therefore, the tunnel boring machine is difficult to operate in small sections, or even cannot work in small sections; and because most general power tunnels pass through important public buildings such as cities and highways underground, blasting construction cannot be implemented, and there is no suitable special excavation equipment for construction. It can only rely on general engineering machinery and equipment such as small excavators for construction, and the construction efficiency of these engineering machinery and equipment is low, so the construction period cannot be effectively guaranteed. Summary of the invention

[0003] In view of the above shortcomings of the prior art, the present invention provides a roadheader suitable for small-section tunnels, which solves the problem that the existing roadheaders are not suitable for small-section tunneling by reducing the width of the entire roadheader.

[0004] In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

[0005] A tunnel boring machine suitable for a small-section tunnel, comprising:

[0006] the fuselage, having a nose and a tail;

[0007] A cutting mechanism is arranged on the machine head and located on one side of the machine head;

[0008] A transporter extending at least from the nose to the tail and located on the other side of the nose;

[0009] A shovel board is connected to the machine head, and a star wheel assembly is provided on the shovel board for pushing the material on the shovel board to the conveyor.

[0010] Furthermore, the conveyor is connected to the shovel board, and the feed port of the conveyor is located on a side of the shovel board close to the conveyor.

[0011] Furthermore, the discharge port of the shovel plate is located on a side of the shovel plate close to the conveyor.

[0012] Furthermore, the cutting mechanism includes a cutting head, a cutting arm and a rotating connection mechanism.

[0013] One end of the cutting arm is provided with the cutting head, and the other end of the cutting arm is connected to the rotating connection mechanism;

[0014] The rotating connection mechanism is located above the shovel plate and connected to the fuselage. The rotating connection mechanism is used to drive the cutting arm to rotate relative to the fuselage to adjust the position of the cutting head.

[0015] Furthermore, the rotating connection mechanism includes:

[0016] A rotating plate is rotatably connected to the body, and one end of the cutting arm is hinged to the rotating plate;

[0017] A lifting assembly, hinged to the cutting arm, used to drive the cutting arm to rotate up and down around a hinge point between the cutting arm and the rotating plate, so as to adjust the height of the cutting head;

[0018] The first driving part is drivingly connected to the rotating plate and is used for driving the rotating plate to rotate horizontally, so as to drive the cutting arm to rotate horizontally.

[0019] Furthermore, a rotating plate is provided on the rotating plate, and the rotating plate is located below the hinge point between the cutting arm and the rotating plate; the lifting assembly includes:

[0020] An oil cylinder, one end of which is hinged to the connecting plate, and the other end of which is hinged to the cutting arm. The oil cylinder is used to control the angle of the cutting arm to rotate up and down to adjust the height of the cutting head.

[0021] An oil cylinder, one end of which is hinged to the connecting plate, and the other end of which is hinged to the cutting arm. The oil cylinder is used to control the angle of the cutting arm to rotate up and down to adjust the height of the cutting head.

[0022] Furthermore, the piston rod of the oil cylinder is detachably hinged to the cutting arm, and the cylinder barrel of the oil cylinder is detachably hinged to the connecting plate.

[0023] Furthermore, it also includes a walking mechanism for driving the body to move, and the walking mechanism includes:

[0024] crawlers, arranged on the sides of the fuselage;

[0025] The second driving unit is connected to the crawler drive and is used to drive the crawler drive to drive the machine body to move.

[0026] Furthermore, the star wheel assembly is arranged close to the center position of the shovel plate.

[0027] Furthermore, the star wheel assembly is a single star wheel assembly.

[0028] The tunnel boring machine provided by the present invention is suitable for small-section tunnels. By arranging a conveyor on the side of the fuselage and a star wheel assembly on the shovel board, the material on the shovel board can be moved from the side of the shovel board to the feeding port of the conveyor under the push of the star wheel assembly, so as to realize the single-sided discharge of the material on the shovel board, and then the material is discharged through the conveyor located on the side of the fuselage. It can be seen that the tunnel boring machine provided by the present invention can replace the existing tunnel boring machine's discharge method between two star wheel assemblies through the design of the star wheel assembly located on the shovel board and the conveyor located on the side of the fuselage, so as to make the overall structure of the tunnel boring machine compact, thereby reducing the width of the whole machine of the tunnel boring machine, so that it is suitable for cutting hard rock in small sections.

[0029] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0030] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 A schematic structural diagram of a tunnel boring machine suitable for a small-section tunnel according to an exemplary embodiment of the present invention;

[0033] Figure 2 A schematic structural diagram of a tunnel boring machine suitable for a small-section tunnel according to an exemplary embodiment of the present invention;

[0034] Figure 3 A side view of a tunnel boring machine suitable for a small-section tunnel according to an exemplary embodiment of the present invention;

[0035] Figure 4 A front view of a tunnel boring machine suitable for a small-section tunnel according to an exemplary embodiment of the present invention;

[0036] Figure 5 A schematic diagram of the cutting arm rotating up and down according to an exemplary embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the cutting arm rotating left and right according to an exemplary embodiment of the present invention.

[0038] In the figure:

[0039] 1-fuselage, 2-conveyer, 3-shovel board, 4-star wheel assembly, 5-cutting head, 6-cutting arm, 7-rotating plate, 8-lifting assembly, 9-connecting plate, 10-crawler, 11-support part. DETAILED DESCRIPTION

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0044] The present invention provides a tunnel boring machine suitable for small-section tunnels, see Figures 1 to 4 , including a fuselage 1, a cutting mechanism, a conveyor 2 and a shovel board 3, the fuselage 1 has a nose and a tail; the cutting mechanism is arranged on the nose and is located on one side of the nose; the conveyor 2 extends at least from the nose to the tail and is located on the other side of the nose; the shovel board 3 is connected to the nose, and the shovel board 3 is provided with a star wheel assembly 4 for pushing the material on the shovel board 3 to the conveyor 2.

[0045] The present invention arranges the conveyor 2 on the side of the fuselage 1 and the star wheel assembly 4 on the shovel board 3, so that the material on the shovel board 3 can be moved from the side of the shovel board 3 to the feeding port of the conveyor 2 under the push of the star wheel assembly 4, so as to realize the single-sided discharge of the material on the shovel board 3, and then the material is discharged through the conveyor 2 located on the side of the fuselage 1. It can be seen that the tunnel boring machine provided by the present invention can replace the existing tunnel boring machine through the middle discharge method of two star wheel assemblies 4 through the design of the star wheel assembly 4 located on the shovel board 3 and the conveyor 2 located on the side of the fuselage 1, so as to make the overall structure of the tunnel boring machine compact, thereby reducing the width of the whole machine of the tunnel boring machine, so that it is suitable for cutting hard rocks in small sections.

[0046] In some embodiments, the conveyor 2 is connected to the shovel board 3, and the feed port of the conveyor 2 is located on the side of the shovel board 3 close to the conveyor 2, so that when the material is pushed by the star wheel assembly 4 to the side of the shovel board 3 close to the conveyor 2, it can enter the feed port of the conveyor 2. Preferably, the conveyor 2 includes a scraper conveyor or a belt conveyor.

[0047] Optionally, the discharge port of the shovel board 3 is located on the side of the shovel board 3 close to the conveyor 2, which can realize unilateral transportation of materials on the shovel board 3, thereby making the spatial arrangement of the shovel board 3 in front of the fuselage 1 more reasonable. Preferably, the discharge port of the shovel board 3 is connected to the feed port of the conveyor 2.

[0048] In some embodiments, see Figure 1 and 2 The cutting mechanism includes a cutting head 5, a cutting arm 6 and a rotating connection mechanism. The cutting head 5 is arranged at one end of the cutting arm 6, and the end of the cutting arm 6 away from the cutting head 5 is connected to the rotating connection mechanism; the rotating connection mechanism is located above the shovel plate 3 and connected to the machine body 1, and the rotating connection mechanism is used to drive the cutting arm 6 to rotate relative to the machine body 1 to adjust the position of the cutting head 5. By connecting the end of the cutting arm 6 away from the cutting head 5 to the rotating connection mechanism, the cutting arm 6 is driven by the rotating connection mechanism to rotate relative to the machine body 1, so as to achieve the position adjustment of the cutting head 5 located on the cutting arm 6, thereby improving the flexibility of the cutting mechanism and the cutting and excavation efficiency of the tunnel boring machine.

[0049] Optionally, the rotating connection mechanism includes a rotating plate 7, a lifting assembly 8 and a first driving unit. The rotating plate 7 is rotatably connected to the fuselage 1, and one end of the cutting arm 6 is hinged to the rotating plate 7; the lifting assembly 8 is hinged to the cutting arm 6, and the lifting assembly 8 is also connected to the rotating plate 7. The lifting assembly 8 is used to drive the cutting arm 6 to rotate up and down around the hinge point between the cutting arm 6 and the rotating plate 7 to adjust the height of the cutting head 5; the first driving unit is drivingly connected to the rotating plate 7, and the first driving unit is used to drive the rotating plate 7 to rotate horizontally to drive the cutting arm 6 to rotate horizontally. In this embodiment, see Figure 5The cutting arm 6 is driven by the lifting assembly 8 to rotate up and down around the hinge point between the cutting arm 6 and the rotating plate 7, so that the cutting arm 6 can be pitched up and down, thereby adjusting the height of the cutting head 5 located on the cutting arm 6; see Figure 6 The first driving unit drives the rotating plate 7 to rotate horizontally to drive the cutting arm 6 to rotate, so that the cutting arm 6 can rotate left and right relative to the fuselage 1, thereby adjusting the horizontal position of the cutting head 5 located on the cutting arm 6. It can be seen that the rotating connection mechanism provided in this embodiment can adjust the up and down, left and right angles of the cutting arm 6, thereby improving the cutting and excavation efficiency of the tunnel boring machine. Among them, the first driving unit is preferably a cylinder assembly for driving the rotating plate 7 to rotate.

[0050] Optionally, a rotating plate 9 is provided on the rotating plate 7, and the rotating plate 9 is located below the hinge point between the cutting arm 6 and the rotating plate 7. The lifting assembly 8 includes a cylinder, one end of which is hinged to the connecting plate 9, and the other end of which is hinged to the cutting arm 6. The cylinder is used to control the angle of the cutting arm 6 to rotate up and down to adjust the height of the cutting head 5. In this embodiment, under the telescopic action of the piston rod of the cylinder, the cutting arm 6 rotates up and down with the hinge point between the cutting arm 6 and the rotating plate 7 as the center, and when the height of the cutting head 5 is a preset height, the length of the piston rod of the cylinder is locked to complete the height adjustment of the cutting head 5.

[0051] Furthermore, the piston rod of the oil cylinder is detachably hinged to the cutting arm 6, and the cylinder barrel of the oil cylinder is detachably hinged to the connecting plate 9. In this embodiment, by detachably hingedly connecting the piston rod of the oil cylinder to the cutting arm 6, and detachably hingedly connecting the cylinder barrel of the oil cylinder to the connecting plate 9, the connection mode of the oil cylinder to the cutting arm 6 and the connecting plate 9 is made more flexible, and the replacement and maintenance of the oil cylinder are facilitated.

[0052] In some embodiments, the tunnel boring machine further includes a walking mechanism for driving the machine body 1 to move, the walking mechanism includes a crawler 10 and a second driving unit, the crawler 10 is arranged on the side of the machine body 1; the second driving unit is drivingly connected to the crawler 10, and the second driving unit is used to drive the crawler 10 to drive the machine body 1 to move. Specifically, the walking mechanism also includes a chassis frame arranged on the machine body 1, the crawler 10 and the second driving unit are both arranged on the chassis frame, wherein the second driving unit is preferably a hydraulic motor assembly. In addition, a support portion 11 that can support the chassis frame is also provided at the bottom of the machine body 1.

[0053] In some embodiments, the star wheel assembly 4 is arranged near the center of the shovel board 3. In this embodiment, by arranging the star wheel assembly 4 near the center of the shovel board 3, the material on the shovel board 3 is driven by the star wheel assembly 4 to rotate clockwise or counterclockwise, and when the material rotates to the feeding port of the conveyor 2, the material enters the conveyor 2, thereby realizing that the material is transported by the conveyor 2 located at the side of the tunnel boring machine.

[0054] Optionally, the star wheel assembly 4 is a single star wheel assembly. In this embodiment, by preferably using the star wheel assembly 4 as a single star wheel assembly, the material on the shovel board 3 is driven by the single star wheel assembly to rotate clockwise or counterclockwise and enter the feed port of the conveyor 2 located on the side of the shovel board close to the conveyor, so that the material is transported by the conveyor 2 located on the side of the tunnel boring machine. At the same time, the setting of the single star wheel assembly can also reduce the width of the shovel board 3 to avoid the width of the tunnel boring machine being too wide due to the shovel board 3 being too wide.

[0055] In some embodiments, the width of the machine body 1 is 1.4m-1.8m. The width of general tunnel boring machines in the prior art is above 2.4m. Therefore, the machine body 1 in this embodiment is about 30% narrower than that of ordinary tunnel boring machines, so that the tunnel boring machine provided in this embodiment is suitable for small-section operations.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A boring machine suitable for small-section tunnels, characterized in that: include: A fuselage (1) having a nose and a tail; A cutting mechanism is arranged on the machine head and located on one side of the machine head; A transport plane (2), extending at least from the nose to the tail, and located on the other side of the nose; A shovel plate (3) connected to the machine head, the shovel plate (3) being provided with a star wheel assembly (4) for pushing the material on the shovel plate (3) onto the conveyor (2); The conveyor (2) is connected to the shovel plate (3), and the feed inlet of the conveyor (2) is located on a side of the shovel plate (3) close to the conveyor (2); The discharge port of the shovel plate (3) is located on a side of the shovel plate (3) close to the conveyor (2); The star wheel assembly (4) is arranged close to the center position of the shovel plate (3); The star wheel assembly (4) is a single star wheel assembly.

2. The tunnel boring machine for small-section tunnels according to claim 1, characterized in that: The cutting mechanism comprises a cutting head (5), a cutting arm (6) and a rotating connection mechanism; The cutting head (5) is provided at one end of the cutting arm (6), and the other end of the cutting arm (6) is connected to the rotating connection mechanism; The rotating connection mechanism is located above the shovel plate (3) and connected to the machine body (1), and the rotating connection mechanism is used to drive the cutting arm (6) to rotate relative to the machine body (1) to adjust the position of the cutting head (5).

3. The tunnel boring machine for small-section tunnels according to claim 2, characterized in that: The rotating connection mechanism comprises: A rotating plate (7) is rotatably connected to the body (1), and one end of the cutting arm (6) is hinged to the rotating plate (7); a lifting assembly (8) hinged to the cutting arm (6) and used to drive the cutting arm (6) to rotate up and down around a hinge point between the cutting arm (6) and the rotating plate (7) so as to adjust the height of the cutting head (5); The first driving part is drivingly connected to the rotating plate (7) and is used to drive the rotating plate (7) to rotate horizontally, thereby driving the cutting arm (6) to rotate horizontally.

4. The tunnel boring machine for small-section tunnels according to claim 3, characterized in that: A connecting plate (9) is provided on the rotating plate (7), and the connecting plate (9) is located below the hinge point between the cutting arm (6) and the rotating plate (7); the lifting assembly (8) comprises: An oil cylinder, one end of which is hinged to the connecting plate (9) and the other end of which is hinged to the cutting arm (6), wherein the oil cylinder is used to control the angle of the up and down rotation of the cutting arm (6) to adjust the height of the cutting head (5).

5. The tunnel boring machine for small-section tunnels according to claim 4, characterized in that: The piston rod of the oil cylinder is detachably hinged to the cutting arm (6), and the cylinder barrel of the oil cylinder is detachably hinged to the connecting plate (9).

6. The tunnel boring machine for small-section tunnels according to claim 1, characterized in that: It also includes a walking mechanism for driving the body (1) to move, the walking mechanism comprising: A crawler (10) provided on the side of the fuselage (1); The second driving unit is connected to the crawler belt (10) for driving the crawler belt (10) to drive the body (1) to move.

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