A cutter head for vertical excavation

Abstract

The application discloses a cutter head for vertical tunneling and relates to the technical field of rock tunneling equipment, and comprises a cutter head body, cutters, a slag discharging structure, wherein the cutters comprise a plurality of single-edge rotary cutters and a plurality of double-edge rotary cutters which are installed on the cutter head body; the slag discharging structure comprises a slag suction port and a slag guide groove which are respectively arranged on the disc surface of the cutter head body, the slag guide groove corresponds to the slag suction port one by one, the slag guide groove is used for guiding the slag pieces generated in the tunneling process to the corresponding slag suction port, and the slag suction port is a round hole; the slag suction port is communicated with a slag discharging pipeline through a cutter head cavity channel, and the slag discharging pipeline is communicated with a suction port of an air negative pressure device. The cutter head for vertical tunneling can meet the efficient operation requirement of vertical tunneling operation.

Description

Technical Field

[0001] This invention relates to the field of rock tunneling equipment technology, and in particular to a cutterhead for vertical tunneling. Background Technology

[0002] In the disposal of high-level radioactive waste, burying it in stable geological bodies at depths of 500m to 1000m is currently considered a technically feasible final disposal method internationally.

[0003] High-level radioactive waste disposal sites in geological formations typically consist of horizontal channels and vertically downward disposal pits along those channels. These vertically downward disposal pits are formed by vertical tunneling operations, where vertical tunneling heads are used to excavate vertically downwards through the rock mass.

[0004] In vertical tunneling operations, the rock mass needs to be broken by the cutterhead in order to continue tunneling downwards. Vertical tunneling places high demands on the rock-breaking efficiency of the cutterhead, the stability of the cutterhead, the uniformity of the cutter load, and the muck removal efficiency. However, the performance of existing commonly used cutterheads cannot meet the requirements of high-efficiency vertical tunneling operations. Summary of the Invention

[0005] The purpose of this invention is to provide a cutterhead for vertical tunneling to solve the problems existing in the prior art and meet the high-efficiency operation requirements of vertical tunneling.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides a cutterhead for vertical tunneling, comprising:

[0008] Cutterhead body;

[0009] The cutting tool includes a plurality of single-edged hobs and a plurality of double-edged hobs mounted on the cutter head body;

[0010] The slag discharge structure includes a slag suction port and a slag guide channel respectively disposed on the disc surface of the cutterhead body. The slag guide channel corresponds one-to-one with the slag suction port. The slag guide channel is used to guide the slag generated during the tunneling process to the corresponding slag suction port. The slag suction port is a round hole. The slag suction port is connected to the slag discharge pipe through the cutterhead cavity channel. The slag discharge pipe is connected to the air intake of the air negative pressure device.

[0011] Preferably, there are two slag suction ports and two slag inlet channels, and the two slag suction ports are symmetrical about the center of the disc surface.

[0012] Preferably, each of the slag inlet troughs is surrounded by two wire brushes, and the slag suction port is located between the two wire brushes of the corresponding slag inlet trough, with the top of the wire brushes fixedly connected to the disc surface of the cutter head body.

[0013] Preferably, each of the wire brushes extends from the center of the disc to the edge of the disc and avoids the blade, the wire brushes being used to scrape the slag flakes.

[0014] Preferably, the plate is also provided with an air inlet, which is connected to the outside air of the vertically excavated pit through a ventilation pipe.

[0015] Preferably, all of the single-edged hobs and all of the double-edged hobs have a diameter of 11 inches.

[0016] Preferably, all single-edged hobs and all double-edged hobs are mounted using a front-loading method.

[0017] Preferably, there are 12 single-edged hobs and 4 double-edged hobs.

[0018] The present invention achieves the following technical effects compared to the prior art:

[0019] The cutterhead of this invention for vertical tunneling can meet the high-efficiency operation requirements of vertical tunneling operations.

[0020] When the cutterhead of this invention rotates in vertical tunneling, the wire brush also rotates with the cutterhead body. When the wire brush rotates, it can scrape away slag and dust on the tunnel face, thereby improving the slag suction efficiency.

[0021] Secondly, since each slag suction port is equipped with a wire brush on both sides, and the two wire brushes form a slag-guiding groove, when the slag suction port generates negative pressure, the two wire brushes can play a certain sealing role, thereby increasing the negative pressure suction force of the slag suction port, thereby improving the slag suction efficiency and achieving rapid slag discharge.

[0022] In addition, the slag-guiding trough formed by two wire brushes has the effect of quickly guiding the slag flakes to the slag-suction port. Therefore, the design of the slag-guiding trough itself also improves the slag-suction efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the cutterhead for vertical tunneling according to the present invention;

[0025] Figure 2 This is a schematic diagram of the cutterhead for vertical tunneling according to the present invention;

[0026] The components include: 1. cutterhead body; 2. double-edged roller cutter; 3. single-edged roller cutter; 4. tunneling head; 5. slag suction port; 6. wire brush; 7. air intake port; and 8. slag chute. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The purpose of this invention is to provide a cutterhead for vertical tunneling to solve the problems existing in the prior art and meet the high-efficiency operation requirements of vertical tunneling.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-2 As shown, this embodiment provides a cutterhead for vertical tunneling, including a cutterhead body 1, cutters, and a slag removal structure.

[0031] The cutterhead body 1 is used to be installed at the tunneling end of the vertical tunneling head 4.

[0032] The cutting tool includes 12 single-edged hobs 3 and 4 double-edged hobs 2 mounted on the cutter head body 1; in this embodiment, there are 12 single-edged hobs 3 and 4 double-edged hobs 2. The spacing between the cutters is 40 cm. All single-edged hobs 3 and all double-edged hobs 2 have a diameter of 11 inches. All single-edged hobs 3 and all double-edged hobs 2 are mounted in a front-loading manner.

[0033] Reference Figure 2 The slag discharge structure includes a slag suction port 5 and a slag inlet 8 respectively disposed on the disc surface of the cutterhead body 1. Figure 1 (Not shown in the image) The slag inlet 8 and the slag suction port 5 correspond one-to-one. The slag inlet 8 is used to guide the slag generated during the tunneling process to the corresponding slag suction port 5, which is a round hole. The slag suction port 5 is connected to the slag discharge pipe through the cutterhead cavity channel, and the slag discharge pipe is connected to the air intake of the air negative pressure device. An air inlet 7 is also provided on the cutterhead, which is connected to the external air of the vertically tunneled excavation pit through a ventilation pipe.

[0034] When the negative pressure air device is working, the air outside the tunnel enters the working face of the tunnel through the ventilation pipe and the air inlet 7, and then carries the slag fragments into the cutterhead cavity channel through the slag inlet 8 and the slag suction port 5, and is finally discharged from the tunnel through the slag outlet pipe; setting the air inlet 7 can further improve the slag suction efficiency of the slag suction port 5.

[0035] In this embodiment, there are two slag suction ports 5 and two slag inlets 8, and the two slag suction ports 5 are symmetrical about the center of the disc surface. The distance between the center of the slag suction port 5 and the center of the disc surface can be about half or half the radius of the cutter head body 1, which can maximize the slag suction efficiency. In addition, the distance between the center of the two slag suction ports 5 and the center of the disc surface can be set to be unequal to further improve the slag suction effect.

[0036] In this embodiment, each slag inlet trough 8 is equipped with two wire brushes 6 ( Figure 1 (Not shown in the diagram) Enclosed by two wire brushes 6, with the suction port 5 located between the corresponding slag inlet 8, the top of each wire brush 6 is fixedly connected to the surface of the cutterhead body 1. Each wire brush 6 extends from the center of the surface to the edge, avoiding each single-edged cutter 3 and each double-edged cutter 2 in the cutterhead, thus preventing collision between the single-edged cutter 3 or double-edged cutter 2 and the wire brush 6. The wire brush 6 is used to scrape away slag flakes, dust, and other debris generated at the face during vertical tunneling. When the cutterhead body 1 rotates, the wire brush 6 also rotates with the cutterhead body 1. The rotation of the wire brush 6 can scrape away slag flakes and dust on the face, thereby improving the slag suction efficiency. As the cutterhead body 1 rotates continuously, the suction port 5, wire brush 6, and slag inlet 8 also rotate continuously, thereby achieving the removal of slag flakes from the entire face of the vertical tunneling.

[0037] Since each slag suction port 5 is equipped with a wire brush 6 on both sides, and the two wire brushes 6 form a slag-guiding groove 8, when the slag suction port 5 generates negative pressure, the two wire brushes 6 can play a certain sealing role, thereby increasing the negative pressure suction force of the slag suction port, thus improving the slag suction efficiency and achieving rapid slag discharge. When the slag suction port 5 is under negative pressure, the slag-guiding groove 8 formed by the two wire brushes has the effect of quickly guiding slag flakes and other materials to the slag suction port 5. Therefore, the design of the slag-guiding groove 8 itself also improves the slag suction efficiency.

[0038] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A cutter head for vertical excavation, characterized in that, include: Cutterhead body; The cutting tool includes a plurality of single-edged hobs and a plurality of double-edged hobs mounted on the cutter head body; The slag removal structure includes slag suction ports and slag guide channels respectively disposed on the surface of the cutterhead body. Each slag guide channel corresponds to a slag suction port, and the slag guide channel is used to guide the slag generated during the tunneling process to the corresponding slag suction port. The slag suction port is a circular hole. The slag suction port is connected to the slag discharge pipe through a cutterhead cavity channel, and the slag discharge pipe is connected to the air intake of an air negative pressure device. Each slag guide channel is surrounded by two wire brushes, and the slag suction port is located between the two wire brushes of the corresponding slag guide channel. The top of each wire brush is fixedly connected to the surface of the cutterhead body. Each wire brush extends from the center of the surface to the edge of the surface, avoiding the cutter head, and is used to scrape the slag. An air intake port is also provided on the surface, and the air intake port is connected to the external air of the vertically tunneling pit through a ventilation pipe. The distance between the center of the slag suction port and the center of the disc surface is half the radius of the cutter disc body.

2. A cutter head for vertical excavation according to claim 1, characterized in that: There are two slag suction ports and two slag inlets, and the two slag suction ports are symmetrical about the center of the disc surface.

3. The cutterhead for vertical tunneling according to claim 1, characterized in that: All of the single-edged hobs and all of the double-edged hobs have a diameter of 11 inches.

4. The cutterhead for vertical tunneling according to claim 1, characterized in that: All single-edged hobs and all double-edged hobs are mounted using a front-loading method.

5. The cutterhead for vertical tunneling according to claim 1, characterized in that: There are 12 single-edged hobs and 4 double-edged hobs.

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