A multi-row-tooth coordinated rock breaking device of a tipped tooth hob based on motor servo driving

Abstract

The application discloses a kind of based on motor servo driving's inserted tooth hob multi-row tooth coordinated rock breaking device, it is related to mining equipment technical field.The present application includes support platform, the mobile frame is arranged in the support platform, the mobile frame one side is provided with drive assembly, the drive assembly includes the drive motor of installation in mobile frame interior, drill rod is set to the drive motor bottom, drill disc is set to the drill rod bottom.The present application is monitored by pressure sensor in pressure detection component and real-time monitoring eccentricity of supporting shaft with ball, when detecting that drill disc is uneven, first by first hydraulic rod fixed tooth is pushed and is tightly closed well wall, then by second hydraulic rod reverse jacking drill disc tilt side, automatically balance drill disc stress, cooperate with flexible support of rotating disc and support disc in support assembly, avoid rigid jam, the structure can effectively prevent fatigue crack at drill disc and drill rod junction, significantly improve the stability of reverse well drilling and equipment service life, guarantee safety production.

Description

Technical Field

[0001] This invention belongs to the field of mining equipment technology, and in particular relates to a multi-row toothed rock-breaking device based on motor servo drive for toothed hobbing cutters. Background Technology

[0002] Rock breaking devices refer to various engineering machinery and tools used for breaking hard rocks, concrete, and strata, and are widely used in mining, tunneling, foundation pit excavation, and underground space development. Based on their technical principles, they can be categorized into mechanical cutting (such as TBM / shield machine cutterheads), hydraulic static fracturing (such as hydraulic rock splitters), kinetic energy impact (such as high-frequency hydraulic breakers), phase change expansion (such as carbon dioxide fracturing devices), and fluid cutting (such as high-pressure water jets). Among these, riser drilling rigs, as specialized vertical shaft rock breaking equipment, are mainly used in the construction of mine ventilation shafts, hydroelectric power station surge tanks, and tunnel chutes. They achieve unmanned underground operation by first drilling a pilot hole and then reversing the hole, featuring high-quality well completion, minimal disturbance to the surrounding rock, and excellent safety, making them particularly suitable for high-gas mines and urban explosion-free zones.

[0003] A Chinese patent application (or patent) with publication number CN113863864B discloses a cutterhead suitable for raise boring machine (RBM) construction, comprising a center block and multiple side blocks. Roller cutters are provided on the top surface of both the center block and the side blocks. The multiple side blocks are evenly arranged around the outer periphery of the center block along its circumference and are hinged to the center block. The side blocks can swing towards the center of the center block to reduce the diameter of the cutterhead. The center block comprises a center block body and an extension plate disposed on the outer periphery of the bottom of the center block body.

[0004] However, the above-mentioned device still has the following problems during implementation: During reverse drilling, the cutterhead is continuously moved upward by the surface hydraulic equipment. The rotating cutterhead drills into the well wall. However, the hardness of the rocks inside the well wall often varies greatly and the distribution is uneven. This can easily lead to greater stress on one side of the top of the cutterhead. As the cutterhead is pulled upward from the center by the shaft, it is prone to tilting due to stress, which can cause the connection between the cutterhead and the shaft to break, affecting the service life of the equipment.

[0005] To address this issue, we provide a multi-row toothed hob rock-breaking device based on motor servo drive to solve the aforementioned problems. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-row toothed rock-breaking device based on motor servo drive. Through the structural cooperation of the drive component, support component, lifting component and pressure detection component, it solves the problem in the prior art that the cutterhead is prone to radial tilting during the lifting process of the cutterhead with the central shaft in the riser drilling equipment, which causes fatigue cracks at the root of the connection between the cutterhead and the shaft and affects safe production.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0008] This invention relates to a multi-row toothed hobbing rock-breaking device based on motor servo drive, comprising a support platform, a movable frame inside the support platform, a drive assembly on one side of the movable frame, the drive assembly including a drive motor installed inside the movable frame, a drill rod at the bottom of the drive motor, a drill disc at the bottom of the drill rod, and a drill bit at the top of the drill disc; a support assembly is provided at the bottom of the drill disc, the support assembly including a rotating disk installed at the bottom of the drill disc, a support plate movably connected to the surface of the rotating disk, a fixed frame installed on the surface of the support plate, a rotating shaft movably connected inside the fixed frame, a rotating plate installed on the surface of the rotating shaft, and a first hydraulic rod movably connected to one side of the rotating plate, the support assembly supporting the bottom of the drill disc; A lifting assembly is provided on one side of the rotating plate. The lifting assembly includes a guide rail plate installed on one side of the rotating plate, a movable shell slidably connected to the surface of the guide rail plate, a fixed tooth installed on one side of the movable shell, and a second hydraulic rod installed on one side of the rotating plate. The lifting assembly assists in lifting the pressure-bearing side of the drill disk upwards. A pressure detection assembly is provided on the top of the drill disk. The pressure detection assembly includes a support frame installed on the top of the drill disk, a support shaft installed inside the drill bit, a detection shell sleeved on the surface of the support shaft, an adjustment groove opened inside the detection shell, a pressure sensor installed inside the adjustment groove, a pressure plate installed on one side of the pressure sensor, a rotating shell installed on one side of the pressure plate, and a ball bearing movably connected inside the rotating shell. The pressure detection assembly detects the eccentricity of the support shaft.

[0009] The invention is further configured such that one side of the ball contacts the surface of the support shaft, the surface of the support shaft is movably connected to the inner wall of the support frame through a bearing, and the detection shell is installed inside the support frame.

[0010] The invention is further configured such that the pressure plate is slidably connected to the inner wall of the adjusting groove, and a spring is installed on one side of the pressure plate.

[0011] The present invention is further configured such that there are six balls arranged in a circle around the support shaft.

[0012] The present invention is further configured such that the drive assembly includes a hydraulic cylinder mounted on the top of the mobile frame, a connecting seat mounted on the bottom output end of the drive motor, the connecting seat being threadedly connected to the drill rod, and the output end of the hydraulic cylinder being fixedly connected to the support platform.

[0013] The invention is further configured such that a support column is movably connected inside the mobile frame, and the bottom of the support column is fixedly connected to the support platform.

[0014] The invention is further configured such that the other end of the first hydraulic rod is movably connected to a pin seat, and one side of the pin seat is fixedly connected to the support plate.

[0015] The present invention is further configured such that a movable plate is fixedly connected to the output end of the second hydraulic rod, and one side of the movable plate is fixedly connected to the movable shell.

[0016] The invention is further configured such that the first hydraulic rod is used to push the movable shell to rotate around the rotation axis, so that the fixed teeth abut against the well wall.

[0017] The invention is further configured such that the second hydraulic rod is used to push the movable shell, thereby pushing the inclined side of the drill disk upward through the reaction force.

[0018] The present invention has the following beneficial effects: The present invention monitors the eccentricity of the support shaft in real time through the pressure sensor and ball bearing in the pressure detection component. When uneven force on the drill table is detected, the first hydraulic rod pushes the fixed teeth to press against the well wall, and then the second hydraulic rod lifts the tilted side of the drill table in the opposite direction to automatically balance the force on the drill table. With the help of the rotating disk and support disk in the support component, flexible support is achieved to avoid rigid jamming. This structure can effectively prevent fatigue cracks from occurring at the connection between the drill table and the drill pipe, significantly improve the stability of raise drilling and the service life of the equipment, and ensure safe production.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 This is a three-dimensional view of a multi-row toothed hob rock-breaking device based on motor servo drive.

[0022] Figure 2 This is a schematic diagram of the drill disc structure in a multi-row toothed rock-breaking device based on motor servo drive.

[0023] Figure 3 This is a multi-row toothed hob rock-breaking device based on motor servo drive. Figure 2A bottom view.

[0024] Figure 4 This is a schematic diagram of the drill bit structure in a multi-row toothed rock-breaking device based on motor servo drive.

[0025] Figure 5 This is a partial cross-sectional view of the support frame in a multi-row toothed rock-breaking device based on motor servo drive.

[0026] Figure 6 This is a schematic diagram showing the connection between the support shaft and the ball bearings in a multi-row toothed rock-breaking device based on motor servo drive.

[0027] Figure 7 This is a schematic diagram of the pressure detection component in a multi-row toothed rock-breaking device based on motor servo drive.

[0028] Figure 8 This is a partial cross-sectional view of the rotating disk and support disk in a multi-row toothed rock-breaking device based on motor servo drive.

[0029] Figure 9 This is a schematic diagram showing the connection between the guide rail plate and the moving shell in a multi-row toothed rock-breaking device based on motor servo drive.

[0030] Figure 10 This is a schematic diagram of the second hydraulic rod lifting the drill table in a multi-row toothed rock-breaking device based on motor servo drive.

[0031] In the attached diagram: 1. Support platform; 2. Moving frame; 3. Drive assembly; 301. Drive motor; 302. Drill rod; 303. Drill disc; 304. Drill bit; 4. Support assembly; 401. Rotary disc; 402. Support disc; 403. Fixed frame; 404. Rotating shaft; 405. Rotating plate; 406. First hydraulic rod; 5. Lifting assembly; 501. Guide rail plate; 502. Moving shell; 503. Fixed gear; 504. Second hydraulic rod; 6. Pressure detection assembly; 601. Support frame; 602. Support shaft; 603. Detection shell; 604. Adjustment groove; 605. Pressure sensor; 606. Pressure plate; 607. Rotating shell; 608. Ball bearing; 8. Spring; 305. Hydraulic cylinder; 9. Support column; 10. Pin seat; 11. Moving plate. Detailed Implementation

[0032] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments. Example

[0033] Please see Figures 1-10This invention relates to a multi-row toothed hob rock-breaking device based on motor servo drive, comprising a support platform 1, a movable frame 2 inside the support platform 1, a drive assembly 3 on one side of the movable frame 2, the drive assembly 3 including a drive motor 301 installed inside the movable frame 2, a drill rod 302 located at the bottom of the drive motor 301, a drill disc 303 located at the bottom of the drill rod 302, and a drill bit 304 located at the top of the drill disc 303; a support assembly 4 is located at the bottom of the drill disc 303, the support assembly 4 including a rotating disk 401 installed at the bottom of the drill disc 303, a support disk 402 movably connected to the surface of the rotating disk 401, a fixed frame 403 installed on the surface of the support disk 402, a rotating shaft 404 movably connected inside the fixed frame 403, a rotating plate 405 installed on the surface of the rotating shaft 404, and a first hydraulic rod 406 movably connected to one side of the rotating plate 405, thereby supporting the bottom of the drill disc 303 through the support assembly 4; a first hydraulic rod 406 is located on one side of the rotating plate 405. Lifting assembly 5 includes a guide rail plate 501 mounted on one side of the rotating plate 405, a movable housing 502 slidably connected to the surface of the guide rail plate 501, a fixed tooth 503 mounted on one side of the movable housing 502, and a second hydraulic rod 504 mounted on one side of the rotating plate 405. The lifting assembly 5 assists in lifting the drill disk 303 on the pressure-bearing side upwards. A pressure detection assembly 6 is provided on the top of the drill disk 303, and the pressure detection assembly 6 includes a support frame 601 mounted on the top of the drill disk 303. The support shaft 602 is installed inside the drill bit 304, the detection shell 603 is sleeved on the surface of the support shaft 602, the adjustment groove 604 is opened inside the detection shell 603, the pressure sensor 605 is installed inside the adjustment groove 604, the pressure plate 606 is installed on one side of the pressure sensor 605, the rotating shell 607 is installed on one side of the pressure plate 606, and the ball bearing 608 is movably connected inside the rotating shell 607. The eccentricity of the support shaft 602 is detected by the pressure detection component 6.

[0034] Specifically: The movable frame 2 is located inside the support platform 1 and can move up and down along the support platform 1, thereby driving the drive assembly 3 to rise and fall as a whole, realizing the feed and retraction movement of the drill bit 304. The drive motor 301 is installed inside the movable frame 2 and serves as a power source to output servo drive torque. The drill rod 302 is connected to the bottom of the drive motor 301 and is used to transmit the rotational power of the drive motor 301 to the drill table 303. The drill bit 304 is located on the top of the drill table 303 and adopts a toothed hobbing cutter structure. Through the synergistic action of multiple rows of teeth, it contacts the well wall rock and breaks the rock by rolling and cutting, improving rock breaking efficiency. The rotary disk 401 is installed at the bottom of the drill table 303 and can rotate freely relative to the drill table 303, providing a movable connection point for the support assembly 4, so that the support... Component 4 maintains effective contact with the wellbore even when the drill disk 303 is tilted. Support plate 402 is movably connected to the surface of rotary plate 401, supporting other components of component 4 and transmitting support force. Simultaneously, the relative rotation of rotary plate 401 and drill disk 303 does not affect the normal rotation of drill disk 303. Fixing frame 403 is mounted on the surface of support plate 402, providing a mounting base for rotating shaft 404. Rotating shaft 404 is movably connected inside fixing frame 403, serving as the rotation center of rotating plate 405. Rotating plate 405 is mounted on the surface of rotating shaft 404 and rotates around rotating shaft 404 during operation, thereby extending or retracting lifting component 5. First hydraulic rod 406 is movably connected to one side of rotating plate 405; its extension and retraction pushes rotating plate 405. The jacking assembly 5 rotates around the rotating shaft 404, allowing the fixed teeth 503 in the jacking assembly 5 to extend outward and press against the well wall, thus temporarily fixing the support plate 402. A guide plate 501 is installed on one side of the rotating plate 405, providing a linear guide track for the moving shell 502 and limiting its direction of movement. The moving shell 502 is slidably connected to the surface of the guide plate 501 and moves along the guide plate 501 under hydraulic drive, causing the fixed teeth 503 to insert into or be pulled out of the rock wall. The fixed teeth 503 are installed on one side of the moving shell 502 and are used to insert into the rock wall when the drill plate 303 is tilted, forming a firm anchor point and providing reaction force support for subsequent jacking. A second hydraulic rod 504 is installed on one side of the rotating plate 405, and its extension and retraction pushes the moving shell 502 along... As the guide plate 501 moves, once the fixing tooth 503 is fixed to the well wall, the second hydraulic rod 504 extends further, generating a reverse thrust that pushes the tilted side of the drill table 303 upward, thereby correcting the tilt of the drill table 303. The support frame 601 is installed on top of the drill table 303, providing an installation position for the support shaft 602 and the detection housing 603, and bearing the reaction force when the drill bit 304 is working. The support shaft 602 is installed inside the drill bit 304, serving as the rotation center axis of the drill bit 304, allowing the drill bit 304 to rotate freely around it. Simultaneously, when the drill bit 304 is tilted under force, it transmits the eccentric force to the detection assembly. The adjusting groove 604 is opened inside the detection housing 603, providing guiding space for the movement of the pressure plate 606 and limiting the travel of the pressure plate 606.A pressure sensor 605 is installed inside the adjusting groove 604 to detect the pressure value transmitted by the pressure plate 606 in real time and convert the pressure signal into an electrical signal to be sent to an external control terminal. The pressure plate 606 is installed on one side of the pressure sensor 605 and can slide within the adjusting groove 604 to transmit the thrust received by the ball 608 to the pressure sensor 605. A rotating shell 607 is installed on one side of the pressure plate 606. Example

[0035] Please see Figures 1-10 Based on Embodiment 1, one side of the ball bearing 608 contacts the surface of the support shaft 602. The surface of the support shaft 602 is movably connected to the inner wall of the support frame 601 through a bearing. The detection shell 603 is installed inside the support frame 601. The pressure plate 606 is slidably connected to the inner wall of the adjustment groove 604. A spring 8 is installed on one side of the pressure plate 606. There are six balls bearing 608, which are arranged in a circle with the support shaft 602 as the axis. The drive assembly 3 also includes a hydraulic cylinder 305 installed on the top of the movable frame 2 and a connecting seat 306 installed at the bottom output end of the drive motor 301. The connecting seat 306 is threadedly connected to the drill rod 302. The output end of the hydraulic cylinder 305 is fixedly connected to the support platform 1.

[0036] Specifically: The internal movable connecting ball bearing 608 allows the ball bearing 608 to rotate freely under pressure, reducing frictional loss with the support shaft 602. The ball bearing 608 is movably connected inside the rotating shell 607, with one side in contact with the surface of the support shaft 602. When the support shaft 602 tilts eccentrically, the ball bearing 608 is pressed and pushes the rotating shell 607 and the pressure plate 606, thereby achieving accurate detection of the eccentricity of the support shaft 602. The spring 8 is installed on one side of the pressure plate 606 to provide the pressure plate 606 with a reset force. After the eccentricity of the support shaft 602 is eliminated, the pressure plate 606 returns to its initial position, ensuring that the pressure sensor 605 can continuously detect multiple times. The hydraulic cylinder 305 is installed on the top of the moving frame 2, and its output end is fixedly connected to the support platform 1. The extension and retraction of the hydraulic cylinder 305 pushes the moving frame 2 to move up and down relative to the support platform 1, realizing the feeding and lifting action of the drill plate 303. Example

[0037] Please see Figures 1-10Based on Embodiments 1 and 2, a support column 9 is movably connected inside the movable frame 2. The bottom of the support column 9 is fixedly connected to the support platform 1. The other end of the first hydraulic rod 406 is movably connected to a pin seat 10. One side of the pin seat 10 is fixedly connected to the support plate 402. The output end of the second hydraulic rod 504 is fixedly connected to a movable plate 11. One side of the movable plate 11 is fixedly connected to the movable shell 502. The first hydraulic rod 406 is used to push the movable shell 502 to rotate around the rotating shaft 404, so that the fixed teeth 503 abut against the well wall. The second hydraulic rod 504 is used to push the movable shell 502, and push the inclined side of the drill plate 303 upward through the reaction force.

[0038] Specifically: The support column 9 is movably connected inside the movable frame 2 and its bottom is fixedly connected to the support platform 1. It is used to guide the vertical lifting and lowering movement of the movable frame 2, prevent the movable frame 2 from swaying, and improve the stability of the drilling direction. The six ball bearings 608 are arranged in a circle around the support shaft 602 as the axis, which can detect the slight tilt of the support shaft 602 in any direction in all directions. This ensures that the pressure sensor 605 accurately detects the uneven force on the drill bit 304. When the pressure sensor 605 detects that multiple sets of drill bits 304 are simultaneously subjected to excessive pressure at the same angle, the external control terminal determines that a hard rock wall has been encountered. It then starts the first hydraulic rod 406 to make the fixed tooth 503 press against the well wall, and then starts the second hydraulic rod 504 on the inclined side to lift the drill plate 303 upward, thereby automatically balancing the force on the drill plate 303.

[0039] The working principle of this invention is as follows: the connecting seat 306 at the output end of the drive motor 301 is threadedly fixed to the drill rod 302, and the drill rod 302 is threadedly fixed to the drill disk 303. During the reverse drilling operation, the hydraulic cylinder 305 is started to push the moving frame 2 upward, and at the same time the drive motor 301 is started to drive the drill rod 302 and the drill disk 303 to rotate. When the drill disk 303 rotates, it drives the drill bit 304 to contact the well wall to carry out reverse drilling.

[0040] When the drill bit 304 contacts the well wall and rotates with the drill rod 302, the drill bit 304 rotates around the support shaft 602. When the drill bit 304 acts on the well wall, it generates a reaction force. At this time, when the drill bit 304 drives the support shaft 602 to rotate, it will tilt. The tilting force of the support shaft 602 will act on the ball bearings 608. The surface of the support shaft 602 is covered with six sets of evenly arranged ball bearings 608. When the support shaft 602 tilts to one side, the ball bearings 608 are subjected to force. The ball bearings 608, together with the rotating shell 607, drive the pressure plate 606 to move. The pressure plate 606 acts on the pressure sensor 605. The pressure sensor 605 sends a pressure signal to the external control terminal. The external control terminal analyzes the force situation of multiple sets of drill bits 304. When multiple sets of drill bits 304 rotate to the same angle and the pressure value fed back by the pressure sensor 605 is higher than the set value, it is determined to be a hard rock wall.

[0041] Then, the first hydraulic rod 406 is activated, which pushes the rotating plate 405 to rotate around the rotating shaft 404. The rotating plate 405, together with the guide rail plate 501, drives the moving shell 502 to move. The moving shell 502 drives the fixed teeth 503 to insert into the rock wall. At the same time, the bottom of the drill plate 303 is movably connected to the support plate 402 through the rotating plate 401. After the support plate 402 is fixed to the well wall by the fixed teeth 503, the normal rotation of the drill plate 303 is not restricted.

[0042] Then, the second hydraulic rod 504 on the pressure side of the drill bit 304 is activated. The second hydraulic rod 504 pushes the movable shell 502 and generates a reaction force, which in turn pushes the tilted side of the drill table 303 upward to balance the force on the drill table 303 and improve the drilling effect.

[0043] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-row toothed hob rock-breaking device based on motor servo drive, comprising a support platform (1), characterized in that: The support platform (1) is equipped with a movable frame (2), and a drive assembly (3) is provided on one side of the movable frame (2). The drive assembly (3) includes a drive motor (301) installed inside the movable frame (2), a drill rod (302) located at the bottom of the drive motor (301), a drill disc (303) located at the bottom of the drill rod (302), and a drill bit (304) located at the top of the drill disc (303). The bottom of the drill disk (303) is provided with a support assembly (4). The support assembly (4) includes a rotating disk (401) installed at the bottom of the drill disk (303), a support disk (402) movably connected to the surface of the rotating disk (401), a fixed frame (403) installed on the surface of the support disk (402), a rotating shaft (404) movably connected to the inside of the fixed frame (403), a rotating plate (405) installed on the surface of the rotating shaft (404), and a first hydraulic rod (406) movably connected to one side of the rotating plate (405). The bottom of the drill disk (303) is supported by the support assembly (4). A lifting assembly (5) is provided on one side of the rotating plate (405). The lifting assembly (5) includes a guide rail plate (501) installed on one side of the rotating plate (405), a movable shell (502) slidably connected to the surface of the guide rail plate (501), a fixed tooth (503) installed on one side of the movable shell (502), and a second hydraulic rod (504) installed on one side of the rotating plate (405). The lifting assembly (5) assists in lifting the drill disk (303) on the side under pressure to the upward. The top of the drill bit (303) is provided with a pressure detection component (6). The pressure detection component (6) includes a support frame (601) installed on the top of the drill bit (303), a support shaft (602) installed inside the drill bit (304), a detection shell (603) sleeved on the surface of the support shaft (602), an adjustment groove (604) opened inside the detection shell (603), a pressure sensor (605) installed inside the adjustment groove (604), a pressure plate (606) installed on one side of the pressure sensor (605), a rotating shell (607) installed on one side of the pressure plate (606), and a ball bearing (608) movably connected inside the rotating shell (607). The pressure detection component (6) detects the eccentricity of the support shaft (602).

2. The multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: One side of the ball (608) is in contact with the surface of the support shaft (602), the surface of the support shaft (602) is movably connected to the inner wall of the support frame (601) through the bearing, and the detection shell (603) is installed inside the support frame (601).

3. The multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: The pressure plate (606) is slidably connected to the inner wall of the adjusting groove (604), and a spring (8) is installed on one side of the pressure plate (606).

4. The multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: There are six balls (608) arranged in a circle around the support shaft (602).

5. The multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: The drive assembly (3) also includes a hydraulic cylinder (305) installed on the top of the mobile frame (2), a connecting seat installed at the bottom output end of the drive motor (301), the connecting seat and the drill rod (302) are connected by threads, and the output end of the hydraulic cylinder (305) is fixedly connected to the support platform (1).

6. The multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: The movable frame (2) is internally connected to a support column (9), and the bottom of the support column (9) is fixedly connected to the support platform (1).

7. The multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: The other end of the first hydraulic rod (406) is movably connected to a pin seat (10), and one side of the pin seat (10) is fixedly connected to the support plate (402).

8. The multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: The output end of the second hydraulic rod (504) is fixedly connected to a movable plate (11), and one side of the movable plate (11) is fixedly connected to the movable shell (502).

9. A multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: The first hydraulic rod (406) is used to push the movable shell (502) to rotate around the rotating shaft (404) so ​​that the fixed teeth (503) abut against the well wall.

10. A multi-row toothed hob rock-breaking device based on motor servo drive according to claim 1, characterized in that: The second hydraulic rod (504) is used to push the movable housing (502), which in turn pushes the inclined side of the drill plate (303) upward through the reaction force.

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