Efficient rock breaking cutter structure of TBM (Tunnel Boring Machine)

Abstract

The utility model discloses a TBM shield machine efficient rock breaking cutter structure which comprises a shield machine body, a drill bit is installed at the front end of the shield machine body, an installation assembly is installed on the front face of the drill bit, a cutter assembly is installed in the installation assembly, and a plurality of driving assemblies are installed at the front end of the drill bit. The front end of each driving assembly is provided with a collision pressing assembly. According to the device, a tunnel can be constructed through a drill bit and a cutter assembly which are installed in the device, and in the construction process, a driving assembly installed at the front end of the drill bit pushes a collision pressing assembly, so that a plurality of collision pressing cones installed at the front end of the collision pressing assembly can crush rocks in front of the device or destroy the structure of the surface of the rocks; according to the device, rock can be conveniently cut by the cutter assembly, so that the device can improve the construction efficiency, and the problem that an existing device easily causes slow drilling due to the fact that more rock exists in a tunnel is effectively solved through the device.

Description

A high-efficiency rock-breaking cutter structure for TBM tunnel boring machines Technical Field

[0001] This utility model relates to the field of tunnel boring machines (TBMs), and in particular to a high-efficiency rock-breaking cutter structure for TBMs. Background Technology

[0002] With the continuous development of rail transit construction, tunnel boring machines are increasingly widely used in major projects such as urban subways, railway and highway transportation, energy transmission, and underground passages due to their advantages such as fast excavation speed, high construction quality, low labor intensity, economy, and environmental protection.

[0003] Chinese Patent CN215369851U discloses a novel cutterhead structure for tunnel boring machines (TBMs) used in rock breaking operations. This design solves the problem that existing cutterhead and cutter box designs cannot meet the installation requirements of the cutterheads. The novel cutterhead structure includes a cutter body and a limiting mechanism for mounting and limiting the cutter body to prevent it from falling off. However, existing devices have some shortcomings. In use, existing devices typically involve installing a rock-drilling drill bit at the front of the TBM to advance the tunnel. However, due to the presence of a large amount of rock in the tunnel, drilling is often slow with existing devices. Therefore, we propose a high-efficiency rock-breaking cutter structure for TBMs to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency rock-breaking cutter structure for TBM (tunnel boring machine) to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine) includes a tunnel boring machine body, a drill bit mounted on the front end of the tunnel boring machine body, an installation assembly mounted on the front of the drill bit, a cutting assembly mounted inside the installation assembly, and multiple drive assemblies mounted on the front end of the drill bit, with a impact and crushing assembly mounted on the front end of each drive assembly.

[0007] In a further embodiment, the mounting assembly includes a mounting frame located on the front of the drill bit, and the front of the mounting frame has a plurality of mounting slots.

[0008] In a further embodiment, the cutter assembly includes a plurality of rotating shafts, each of which is located inside a mounting groove, and a plurality of cutting blades are mounted on the outer surface of each of the rotating shafts.

[0009] In a further embodiment, each of the drive components includes a support cylinder, each support cylinder is located at the front end of the drill bit, each support cylinder has an electric push rod installed inside, and each electric push rod has a support rod installed at its output end.

[0010] In a further embodiment, each of the impact-compression components includes an impact-compression plate, each impact-compression plate is located at the front end of the support rod, and a plurality of impact-compression cones are mounted on the front side of each impact-compression plate.

[0011] In a further embodiment, each of the support cylinders has multiple grooves on its inner wall, and each of the support rods has multiple sliders installed on its outer surface, with each groove being adapted to a slider.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model discloses a high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine). Through a drill bit and cutting assembly installed in the device, it can construct tunnels. During construction, a drive assembly installed at the front end of the drill bit pushes an impact assembly, causing multiple impact cones installed at the front end of the impact assembly to break or damage the surface structure of the rock in front of the device. This facilitates cutting by the cutting assembly, improving the construction efficiency. Therefore, this device effectively solves the problem that existing devices tend to have slow drilling speeds due to the presence of a large amount of rock in the tunnel. Attached Figure Description

[0014] Figure 1 is a three-dimensional structural diagram of a high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine).

[0015] Figure 2 is a side cross-sectional schematic diagram of a high-efficiency rock-breaking cutter structure for a TBM tunnel boring machine.

[0016] Figure 3 is a side cross-sectional schematic diagram of the drive component in a high-efficiency rock-breaking cutter structure for a TBM tunnel boring machine.

[0017] Figure 4 is a schematic diagram of the front section of the support cylinder in a high-efficiency rock-breaking cutter structure for a TBM tunnel boring machine.

[0018] In the diagram: 1. Tunnel boring machine body; 2. Drill bit; 3. Cutting assembly; 4. Impact assembly; 5. Drive assembly; 6. Mounting assembly; 7. Mounting slot; 8. Impact plate; 9. Impact cone; 10. Cutting blade; 11. Rotating shaft; 12. Electric push rod; 13. Mounting frame; 14. Support cylinder; 15. Support rod; 16. Sliding block; 17. Slide groove. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4. In this utility model, a high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine) includes a tunnel boring machine body 1. A drill bit 2 is installed at the front end of the tunnel boring machine body 1. An installation component 6 is installed on the front of the drill bit 2. A cutting component 3 is installed inside the installation component 6. Multiple drive components 5 are installed at the front end of the drill bit 2. Each drive component 5 has a ramming component 4 installed at its front end. Through the drill bit 2 and the cutting component 3 installed in the device, tunnel construction can be carried out. During the construction process, the drive components 5 installed at the front end of the drill bit 2 push the ramming component 4, so that multiple ramming cones 9 installed at the front end of the ramming component 4 can break the rock in front of the device or damage its surface structure.

[0023] The mounting assembly 6 includes a mounting frame 13 located on the front of the drill bit 2. The mounting frame 13 has multiple mounting slots 7 on its front. The cutting assembly 3 includes multiple rotating shafts 11, each of which is located inside the mounting slot 7. Multiple cutting blades 10 are mounted on the outer surface of each rotating shaft 11. The drill bit 2 can drive the cutting assembly 3 in the device to perform tunnel construction operations.

[0024] Each drive assembly 5 includes a support cylinder 14, which is located at the front end of the drill bit 2. Each support cylinder 14 has an electric push rod 12 installed inside, and each electric push rod 12 has a support rod 15 installed at its output end. Each impact assembly 4 includes an impact plate 8, which is located at the front end of the support rod 15. Each impact plate 8 has multiple impact cones 9 installed on its front side. The impact plate 8 can be pushed by the electric push rod 12 to contact the rock in the tunnel. The device is equipped with a synchronization control device that can synchronize the operation of multiple electric push rods 12.

[0025] Each support cylinder 14 has multiple grooves 17 on its inner wall, and each support rod 15 has multiple sliders 16 installed on its outer surface. Each groove 17 is adapted to the slider 16, which makes the movement of multiple support rods 15 more stable.

[0026] The working principle of this utility model is as follows:

[0027] This high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine) operates as follows: First, workers install the device at the front end of the TBM body 1 and inspect it to ensure it is functioning correctly. Then, the drill bit 2 is activated, driving the installation assembly 6 to begin tunnel construction. After a period of construction, multiple drive components 5 are activated, pushing the impact component 4 into contact with the rock in front. The pressure forces multiple impact cones 9 on the outer surface of the impact plate 8 into the rock, thereby damaging the outer surface of the rock. Finally, the impact component 4 is retracted, and the drill bit 2 and installation assembly 6 are restarted to continue tunnel construction.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine), characterized in that: The shield machine body (1) is included. A drill bit (2) is installed at the front end of the shield machine body (1). An installation component (6) is installed on the front of the drill bit (2). A cutter component (3) is installed inside the installation component (6). Multiple drive components (5) are installed at the front end of the drill bit (2). A ramming component (4) is installed at the front end of each drive component (5).

2. The high-efficiency rock breaking cutter structure of a TBM shield machine according to claim 1, characterized in that: The mounting component (6) includes a mounting frame (13) located on the front of the drill bit (2), and the front of the mounting frame (13) has multiple mounting slots (7).

3. The high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine) according to claim 1, characterized in that: The cutter assembly (3) includes a plurality of rotating shafts (11), each of which is located inside the mounting groove (7), and a plurality of cutting blades (10) are mounted on the outer surface of each of the rotating shafts (11).

4. The high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine) according to claim 1, characterized in that: Each of the drive components (5) includes a support cylinder (14), each of the support cylinders (14) is located at the front end of the drill bit (2), each of the support cylinders (14) is equipped with an electric push rod (12), and each of the electric push rods (12) is equipped with a support rod (15) at its output end.

5. The high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine) according to claim 1, characterized in that: Each of the impact-compression components (4) includes an impact-compression plate (8), each of the impact-compression plates (8) is located at the front end of the support rod (15), and each of the impact-compression plates (8) has a plurality of impact-compression cones (9) mounted on its front side.

6. The high-efficiency rock-breaking cutter structure for a TBM (tunnel boring machine) according to claim 4, characterized in that: Each of the support cylinders (14) has multiple grooves (17) on its inner wall, and each of the support rods (15) has multiple sliders (16) installed on its outer surface. Each groove (17) is adapted to a slider (16).

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