A mine high-voltage discharge auxiliary rock breaking tunneling device

Abstract

The application relates to a mining high-voltage discharge auxiliary rock breaking tunneling device, and relates to the technical field of mine exploitation and tunneling, which comprises a cantilever. The application has the advantages that when the sliding tunneling mechanism needs to be fixed, the end thereof is extended to the inside of the cutter head assembly, the center driving mechanism drives the sliding tunneling mechanism to be collected to the center, the center driving mechanism is fixed through cooperation with the center fixing bolt, the sliding tunneling mechanism can be uniformly distributed in multiple areas outside the cutter head assembly, the high-voltage pulse of the electrode group is matched to form a net-shaped crack in the rock mass, and then the low-resistance cutting is carried out through cooperation with the sliding tunneling mechanism and the external cutting assembly and other tunneling assemblies; when one end is damaged, the center driving mechanism is loosened and rotated to drive the sliding tunneling mechanism to displace outward until the sliding tunneling mechanism is separated from the inside of the cutter head assembly, so that the sliding tunneling mechanism can be replaced and maintained, the whole cutter head assembly does not need to be replaced, and the dual effects of energy consumption reduction and efficiency improvement are realized.

Description

Technical Field

[0001] This application relates to the fields of mining and tunneling technology, and in particular to a tunneling device for high-voltage discharge-assisted rock breaking in mining. Background Technology

[0002] Currently, hard rock tunneling mainly relies on mechanical rock-breaking equipment, such as roadheaders and TBMs, which break rocks by directly cutting or compressing them with cutting tools. In recent years, high-voltage pulse discharge rock-breaking technology has become a research hotspot due to its non-contact and low-energy consumption characteristics, but its application alone has problems such as difficulty in controlling the discharge channel and limited breaking range.

[0003] Existing mining tunneling equipment typically uses fixed, purely mechanical rock-breaking equipment. Its principle is to use hobbing cutters or cutting teeth for continuous cutting. The advantage is that the technology is mature. However, if one part of the cutting tool is damaged during the tunneling operation, the entire tool needs to be replaced, which leads to high energy consumption and rapid tool wear, increasing the cost of rock-breaking projects. Utility Model Content

[0004] The purpose of this application is to provide a mining high-voltage discharge assisted rock breaking tunneling device, which has the advantages of avoiding the replacement of the entire cutterhead assembly, achieving the dual effects of reduced energy consumption and improved efficiency. It solves the problem that when one part of the cutterhead is damaged, the entire cutterhead needs to be replaced, which leads to high energy consumption and rapid cutter wear, increasing the cost of rock breaking projects.

[0005] The present application provides a mining high-voltage discharge assisted rock-breaking tunneling device with the following technical solution: it includes a cantilever, one end of which is fixedly connected to a cutterhead assembly. The cutterhead assembly has a central drive mechanism inside, and a central fixing bolt is threadedly connected inside the central drive mechanism. A sliding tunneling mechanism is provided on the inner wall of the central drive mechanism. The sliding tunneling mechanism is evenly distributed on the outside of the cutterhead assembly. An annular groove is formed on the outer surface of the cutterhead assembly. An electrode group is provided inside the annular groove. An outer cutting component is threadedly connected to the outer surface of the cutterhead assembly, and an inner cutting component is threadedly connected to the inner wall of the cutterhead assembly.

[0006] By adopting the above technical solution, a central drive mechanism is installed at the center of the cutterhead assembly to restrict the sliding tunneling mechanism. When it is necessary to fix the sliding tunneling mechanism, its end is extended into the interior of the cutterhead assembly, causing the central drive mechanism to retract to the center and fix it with a central fixing bolt. This allows the sliding tunneling mechanism to be evenly distributed in multiple areas on the outside of the cutterhead assembly. During operation, high-voltage pulses from the electrode group form a network of cracks in the rock mass, which is then combined with the sliding tunneling mechanism and other tunneling components such as the external cutting component to perform low-resistance cutting. When one end is damaged, the sliding tunneling mechanism can be moved outward by loosening and rotating the central drive mechanism until it is removed from the interior of the cutterhead assembly for easy replacement and maintenance, avoiding the need to replace the entire cutterhead assembly. This achieves the dual effects of reduced energy consumption and improved efficiency.

[0007] Preferably, the cantilever includes a cantilever column, one end of which is fixedly mounted with a flange, and the outer surface of the flange is threaded with a high-strength bolt. The cutter head assembly is fixedly connected to the flange by the high-strength bolt.

[0008] By adopting the above technical solution, the cutterhead assembly is connected to the cantilever column by multiple high-strength bolts and flanges, so that the cutterhead assembly can be flexibly disassembled and the internal central drive mechanism and sliding tunneling mechanism can be installed.

[0009] Preferably, the cutter head assembly includes a cutter head body, the outer surface of which is provided with an annular mounting groove, the inner cutting component is fixedly connected to the inside of the annular mounting groove, and the inside of the cutter head body is provided with a limiting groove.

[0010] By adopting the above technical solution, multiple intermittently distributed annular mounting grooves are set on the top surface of the cutterhead body to provide a positioning and installation position for the internal cutting component. The annular mounting grooves can be used to position and install the internal cutting component at the tunneling and rock-breaking end of the cutterhead body to increase the effect of auxiliary tunneling operations.

[0011] Preferably, the central drive mechanism includes a central column, a central drive disk is fixedly installed at the bottom of the central column, an arc-shaped groove is formed on the inner wall of the central drive disk, and the central fixing bolt passes through the central column and extends into the interior of the cutter head body.

[0012] By adopting the above technical solution, a central drive disk is set at the bottom of the central column. By rotating the central column, the central drive disk can be driven to rotate inside the cutterhead body. When rotating forward, it drives the sliding tunneling mechanism to move outward, and when rotating in reverse, it drives it to move inward and tighten, thereby providing a driving force for flexible replacement and maintenance of the sliding tunneling mechanism.

[0013] Preferably, the sliding tunneling mechanism includes a sliding disc, a limiting column is fixedly connected to the top of the sliding disc, tunneling cutting teeth are provided on the outer surface of the sliding disc, and a telescopic column is provided on the top of the sliding disc.

[0014] By adopting the above technical solution, a limiting post is set on the top of the sliding disc, and the limiting post is in contact with the inner wall of the arc-shaped groove. When the central drive disc rotates, it drives the arc-shaped groove to rotate, which in turn drives the limiting post to move. The limiting groove restricts the sliding path of the sliding disc. When the sliding disc moves along the inside of the cutterhead body, the top telescopic post is squeezed and rebounds into the inside of the cutterhead body to lock, thereby enhancing the fixation of the sliding disc. The tunneling cutting teeth are distributed on the outside of the cutterhead body through the sliding disc, providing an auxiliary crushing effect for rock breaking operations.

[0015] Preferably, the external cutting component includes external cutting teeth, the bottom of which is welded with a mounting block, and the top of which is threaded with a first bolt. The internal cutting component includes an internal cutting drill bit, the bottom of which is threaded with a positioning block, and the positioning block is fixedly connected to the inside of the annular mounting groove.

[0016] By adopting the above technical solution, the first bolt passes through the mounting block and fixes it to the outside of the cutter head body, so that the outer cutting teeth can be evenly distributed on the outer edge of the cutter head body. The inner cutting drill bit is threadedly connected to the positioning block, so that the inner cutting drill bit can be replaced individually. This can reduce energy consumption while assisting rock breaking with low resistance.

[0017] Preferably, there are two annular mounting slots, and a plurality of positioning blocks and internal drill bits are provided, with the plurality of positioning blocks arranged in a circular array inside the two annular mounting slots.

[0018] By adopting the above technical solution, and by setting up two sets of annular mounting grooves in conjunction with multiple positioning blocks, multiple internal cutting drill bits can be installed near the center of the cutter head body, thereby increasing the resistance effect of the center of the cutter head body and reducing the wear of the internal cutting drill bits.

[0019] Preferably, the number of electrode groups is set to several, and the several electrode groups are distributed in a ring array inside the annular groove.

[0020] By adopting the above technical solution, several electrode groups are arranged in a ring array on the front section of the cutterhead body, spreading from the outside to the inside, to increase the rock-breaking intensity of the high-pressure pulse, so as to cooperate with rock-breaking components such as internal cutting drill bits to carry out efficient rock-breaking operations.

[0021] In summary, this application includes at least one of the following beneficial technical effects of a mining high-voltage discharge-assisted rock-breaking tunneling device:

[0022] This mining high-voltage discharge assisted rock-breaking tunneling device features a central drive mechanism installed at the center of the cutterhead assembly to restrict the sliding tunneling mechanism. When the sliding tunneling mechanism needs to be fixed, its end is extended into the cutterhead assembly, causing the central drive mechanism to retract it to the center and secure it with a central fixing bolt. This allows the sliding tunneling mechanism to be evenly distributed across multiple areas outside the cutterhead assembly. During operation, high-voltage pulses from the electrode group create a network of cracks in the rock mass, which, combined with the sliding tunneling mechanism and other tunneling components such as the outer cutting component, perform low-resistance cutting. If one end is damaged, loosening and rotating the central drive mechanism can drive the sliding tunneling mechanism to move outward until it detaches from the cutterhead assembly for easy replacement and maintenance, avoiding the need to replace the entire cutterhead assembly. This achieves both reduced energy consumption and increased efficiency. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present application;

[0024] Figure 2 This is a schematic diagram of the cutter head body structure of this application;

[0025] Figure 3 This is a schematic diagram of the cantilever column structure of this application;

[0026] Figure 4 This is a schematic diagram of the internal structure of the cutter head body in this application;

[0027] Figure 5 This is a schematic diagram of the central drive disk structure of this application.

[0028] In the picture:

[0029] 1. Cantilever; 2. Cutterhead assembly; 3. Central drive mechanism; 4. Central fixing bolt; 5. Sliding tunneling mechanism; 6. Annular groove; 7. Electrode assembly; 8. External cutting assembly; 9. Internal cutting assembly; 101. Cantilever column; 102. Flange; 103. Heavy bolt; 201. Cutterhead body; 202. Annular mounting groove; 301. Central column; 302. Central drive disc; 303. Arc groove; 501. Sliding disc; 502. Limiting column; 503. Tunneling cutting tooth; 504. Telescopic column; 801. External cutting tooth; 802. Mounting block; 803. First bolt; 901. Internal cutting bit; 902. Positioning block. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0031] Example 1: A mining high-voltage discharge assisted rock-breaking tunneling device, referring to... Figure 1 and Figure 2 The system includes a cantilever 1, with a cutterhead assembly 2 fixedly connected to one end. A central drive mechanism 3 is located inside the cutterhead assembly 2, and a central fixing bolt 4 is threadedly connected to the interior of the central drive mechanism 3. A sliding tunneling mechanism 5 is located on the inner wall of the central drive mechanism 3, and the sliding tunneling mechanisms 5 are evenly distributed on the outside of the cutterhead assembly 2. An annular groove 6 is formed on the outer surface of the cutterhead assembly 2, and an electrode assembly 7 is located inside the annular groove 6. An outer cutting component 8 is threadedly connected to the outer surface of the cutterhead assembly 2, and an inner cutting component 9 is threadedly connected to the inner wall of the cutterhead assembly 2. The central drive mechanism 3 is installed at the center of the cutterhead assembly 2 to restrict the sliding tunneling mechanism 5. When it is necessary to fix the sliding tunneling mechanism 5... By extending its end into the interior of the cutterhead assembly 2, the central drive mechanism 3 drives it to retract to the center and is fixed in conjunction with the central fixing bolt 4. This allows the sliding tunneling mechanism 5 to be evenly distributed in multiple areas on the outside of the cutterhead assembly 2. During operation, it works with the high-voltage pulses of the electrode group 7 to form a network of cracks in the rock mass. Then, it works with the sliding tunneling mechanism 5 and other tunneling components such as the outer cutting component 8 to perform low-resistance cutting. When one end is damaged, the sliding tunneling mechanism 5 can be driven to move outward by loosening and rotating the central drive mechanism 3 until it is removed from the interior of the cutterhead assembly 2. This facilitates its replacement and maintenance, avoiding the need to replace the entire cutterhead assembly 2, thus achieving the dual effects of reduced energy consumption and improved efficiency.

[0032] Example 2: A mining high-voltage discharge assisted rock-breaking tunneling device, referring to... Figure 4 and Figure 5The central drive mechanism 3 includes a central column 301, with a central drive disc 302 fixedly mounted at the bottom of the central column 301. An arc-shaped groove 303 is formed on the inner wall of the central drive disc 302. A central fixing bolt 4 passes through the central column 301 and extends into the interior of the cutterhead body 201. The sliding tunneling mechanism 5 includes a sliding disc 501, with a limiting column 502 fixedly connected to the top of the sliding disc 501. Tunneling cutting teeth 503 are provided on the outer surface of the sliding disc 501, and a telescopic column 504 is provided on the top of the sliding disc 501. By setting the central drive disc 302 at the bottom of the central column 301, rotating the central column 301 can drive the central drive disc 302 to rotate inside the cutterhead body 201. When rotating clockwise, it drives the sliding tunneling mechanism 5 to move outward; when rotating counterclockwise, it drives... It moves inward and tightens, thereby providing a driving force for flexible replacement and maintenance of the sliding tunneling mechanism 5. By setting a limiting post 502 on the top of the sliding plate 501, and the limiting post 502 is in contact with the inner wall of the arc groove 303, when the central drive plate 302 rotates, it drives the arc groove 303 to rotate in coordination with the limiting post 502 to move, and in conjunction with the limiting groove, it restricts the sliding path of the sliding plate 501. When the sliding plate 501 moves along the inside of the cutterhead body 201, the top telescopic post 504 is squeezed and rebounds to the inside of the cutterhead body 201 and is locked, thereby enhancing the fixed state of the sliding plate 501. The tunneling cutting teeth 503 are distributed on the outside of the cutterhead body 201 through the sliding plate 501, providing an auxiliary crushing effect for rock breaking operations.

[0033] Example 3: A mining tunneling device with high-voltage discharge-assisted rock breaking, referring to... Figure 2 and Figure 3 The outer cutting component 8 includes an outer cutting tooth 801, with a mounting block 802 welded to the bottom of the outer cutting tooth 801. A first bolt 803 is threadedly connected to the top of the mounting block 802. The inner cutting component 9 includes an inner cutting drill bit 901, with a positioning block 902 threadedly connected to the bottom of the inner cutting drill bit 901. The positioning block 902 is fixedly connected to the inside of the annular mounting groove 202. The first bolt 803 is used to fix the inner cutting drill bit 901 to the outside of the cutter head body 201, so that the outer cutting tooth 801 can be evenly distributed on the outer edge of the cutter head body 201. The inner cutting drill bit 901 is threadedly connected to the positioning block 902, so that the inner cutting drill bit 901 can be replaced individually. This can reduce energy consumption while assisting rock breaking with low resistance.

[0034] The implementation principle of this application embodiment is as follows: During use, the central column 301 is inserted into the interior of the cutterhead body 201, and multiple sliding discs 501 are sequentially extended into the interior of the cutterhead body 201 along the corresponding limiting grooves. The arc-shaped groove 303 on the inner side of the rotating central drive disc 302 drives the limiting column 502 to move inward and restrict it. The central fixing bolt 4 is then rotated to fix the central column 301, so that the tunneling cutting teeth 503 are evenly distributed on the outer side of the cutterhead body 201. The first bolt 803 is inserted through the mounting block 802 to fix it to the outside of the cutterhead body 201, so that the outer cutting teeth 801 can be evenly distributed on the outer edge of the cutterhead body 201. The internal cutting drill bit 901 and the positioning... The block 902 is threaded, and multiple internal cutting drill bits 901 are evenly distributed inside the annular mounting groove 202 to form a central rock breaking mechanism. After being fixed to the cutter head body 201 by the flange 102 through the strong bolt 103, the cantilever column 101 is connected to the rock breaking machinery. The cantilever column 101 is driven to rotate, and the electrode group 7 discharges high voltage to make the pulse form a network crack in the rock mass. Then, the internal cutting drill bits 901, together with the external cutting teeth 801 and the tunneling cutting teeth 503, rotate synchronously to cut and break the rock mass with low resistance. When one of the tunneling cutting teeth 503 is damaged, the center drive disc 302 drives the limit column 502 to move it outward and disassemble it for replacement.

[0035] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mining high-voltage discharge assisted rock-breaking tunneling device, comprising a cantilever (1), characterized in that: One end of the cantilever (1) is fixedly connected to a cutterhead assembly (2). A central drive mechanism (3) is provided inside the cutterhead assembly (2). A central fixing bolt (4) is threaded inside the central drive mechanism (3). A sliding tunneling mechanism (5) is provided on the inner wall of the central drive mechanism (3). The sliding tunneling mechanism (5) is evenly distributed on the outside of the cutterhead assembly (2). An annular groove (6) is opened on the outer surface of the cutterhead assembly (2). An electrode group (7) is provided inside the annular groove (6). An outer cutting component (8) is threaded on the outer surface of the cutterhead assembly (2). An inner cutting component (9) is threaded on the inner wall of the cutterhead assembly (2).

2. The mining high-voltage discharge assisted rock-breaking tunneling device according to claim 1, characterized in that: The cantilever (1) includes a cantilever column (101), one end of which is fixedly mounted with a flange (102), and the outer surface of the flange (102) is threaded with a high-strength bolt (103). The cutter head assembly (2) is fixedly connected to the flange (102) by the high-strength bolt (103).

3. The mining high-voltage discharge assisted rock-breaking tunneling device according to claim 1, characterized in that: The cutter head assembly (2) includes a cutter head body (201), an annular mounting groove (202) is provided on the outer surface of the cutter head body (201), the inner cutting component (9) is fixedly connected to the inside of the annular mounting groove (202), and a limit sliding groove is provided inside the cutter head body (201).

4. A mining high-voltage discharge assisted rock-breaking tunneling device according to claim 3, characterized in that: The central drive mechanism (3) includes a central column (301), a central drive disk (302) is fixedly installed at the bottom of the central column (301), an arc groove (303) is opened on the inner wall of the central drive disk (302), and the central fixing bolt (4) passes through the central column (301) and extends into the interior of the cutter head body (201).

5. A mining high-voltage discharge assisted rock-breaking tunneling device according to claim 1, characterized in that: The sliding tunneling mechanism (5) includes a sliding disc (501), a limiting column (502) is fixedly connected to the top of the sliding disc (501), a tunneling cutting tooth (503) is provided on the outer surface of the sliding disc (501), and a telescopic column (504) is provided on the top of the sliding disc (501).

6. A mining high-voltage discharge assisted rock-breaking tunneling device according to claim 1, characterized in that: The external cutting assembly (8) includes an external cutting tooth (801), the bottom of which is welded to a mounting block (802), and the top of which is threadedly connected to a first bolt (803). The internal cutting assembly (9) includes an internal cutting drill bit (901), the bottom of which is threadedly connected to a positioning block (902), and the positioning block (902) is fixedly connected to the inside of the annular mounting groove (202).

7. A mining high-voltage discharge assisted rock-breaking tunneling device according to claim 6, characterized in that: There are two annular mounting slots (202), and there are several positioning blocks (902) and internal cutting drill bits (901). Several positioning blocks (902) are arranged in annular arrays inside the two annular mounting slots (202).

8. A mining high-voltage discharge assisted rock-breaking tunneling device according to claim 1, characterized in that: The number of electrode groups (7) is set to several, and the several electrode groups (7) are distributed in a ring array inside the ring groove (6).

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