Special anti-impact shield cutter head for karst stratum

Abstract

The invention discloses a special anti-impact shield cutter head for a karst stratum, and relates to the technical field of shield cutter heads, the special anti-impact shield cutter head comprises a disc body, a cutter is mounted on the disc body, the position of the cutter is adjusted through an adjusting mechanism, the cutter is mounted through a mounting mechanism, the adjusting mechanism comprises a movable groove, and the movable groove is provided with a movable groove. The movable groove is formed in the outer wall of the tray body, and three mounting frames are arranged on the inner wall of the movable groove. By arranging the adjusting mechanism, the rotating plate is rotated to be separated from the baffle, fixing of the baffle is cancelled, the baffle is rotated to open the movable groove, the baffle rotates to drive the partition plate to move out of the position between the two mounting frames, then a tool is used for rotating the rotating disc, and the rotating disc rotates to drive the threaded rod to rotate; and the threaded rod rotates to drive the upper mounting frame and the lower mounting frame to move towards the middle mounting frame, so that when the cutter is replaced, the position of the cutter can be moved, the cutter is made to be close to the operation platform, and replacement operation of the cutter is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of shield cutterheads, specifically a special anti-impact shield cutterhead for karst strata. Background Art

[0002] Underground karst landforms mainly include karst caves and underground rivers. Tunneling in this type of stratum causes very serious wear on the cutters. If the worn cutters are not replaced in time, it will affect the service life of the cutterhead cutters of the shield machine and cause abnormal shield tunneling parameters, seriously affecting the construction progress. However, when replacing the cutters, the operator needs to move the cutterhead to the operation platform to perform the cutter replacement operation. When replacing the upper cutters, due to the high position of the cutters, it is inconvenient to operate. In order to achieve the purpose of facilitating the replacement of the cutters, a special anti-impact shield cutterhead for karst strata is provided. Summary of the Invention

[0003] The purpose of the present invention is to provide a special anti-impact shield cutterhead for karst strata in order to achieve the purpose of facilitating the replacement of the cutters.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A special anti-impact shield cutterhead for karst strata, including a cutterhead body, on which cutters are installed, the positions of the cutters are adjusted through an adjustment mechanism, and the cutters are installed through an installation mechanism; The adjustment mechanism includes a movable groove, which is opened on the outer wall of the cutterhead body. The inner wall of the movable groove is provided with three installation frames. The middle installation frame is fixedly connected to the inner wall of the movable groove. The upper and lower installation frames are slidably connected to the inner wall of the movable groove. A baffle for shielding the installation frames is rotatably connected to the outer wall of the cutterhead body. One end of the baffle is fixedly connected to a partition plate. A rotating plate is rotatably connected to the outer wall of the cutterhead body on one side of the baffle. Through holes are opened on the outer wall of the rotating plate. A threaded hole is opened on the outer wall of the cutterhead body between the baffle and the rotating plate. The rotating plate is fixedly connected to the cutterhead body through a bolt and the threaded hole. The inner wall of the movable groove is symmetrically provided with a limiting rod and a threaded rod that penetrate through the installation frames. The limiting rod is fixedly connected to the movable groove. The threaded rod is rotatably connected to the movable groove. A rotating disk is fixedly connected to the outer wall of the threaded rod. Two connecting rods are rotatably connected between the two installation frames, and the two connecting rods are rotatably connected to each other.

[0005] As a further solution of the present invention: The installation mechanism includes an installation block, the installation block is fixedly connected to the top and bottom of the tool, an installation slot for the installation block to enter is provided in the inner cavity of the installation frame, a connection slot for the connecting rod to be rotatably connected is provided on the outer wall of the installation frame, a groove is provided at one end of the connecting rod facing the installation frame, a plug rod extending into the inner cavity of the installation slot is slidably connected inside the installation frame, a positioning plate is slidably connected at one end of the plug rod inside the installation frame, a first spring is connected between the positioning plate and the installation frame, a convex block is fixedly connected to one end of the positioning plate, the convex block extends into the inner cavity of the connection slot, and a slot is provided on the outer wall of the positioning plate.

[0006] As a further solution of the present invention: The installation mechanism further includes a first spur gear, the first spur gear is rotatably connected inside the installation frame and located on the outer wall of the plug rod, a rotating block is fixedly connected to one end of the first spur gear, the rotating block is rotatably connected to the outer wall of the installation frame, a rotating slot for the rotating block to rotate is provided on the outer wall of the installation frame, a square hole is provided at one end of the rotating block, a clamping block extending out of the rotating block is slidably connected inside the rotating block, a second spring is connected between the clamping block and the rotating block, a second spur gear is rotatably connected to the outer wall of the clamping block inside the rotating block, and a pressing block is slidably connected to the outer wall of the second spur gear inside the rotating block, and the pressing block extends into the inner cavity of the square hole.

[0007] As a further solution of the present invention: The outer wall of the installation frame fits with the inner wall of the movable slot, a connection hole and a limiting hole are provided at the top of the installation frame, and the inner wall of the limiting hole fits with the outer wall of the limiting rod.

[0008] As a further solution of the present invention: External threads are symmetrically provided on the outer wall of the threaded rod, and balls matching the external threads are provided on the inner walls of the connection holes on the upper and lower installation frames.

[0009] As a further solution of the present invention: The height of the partition is equal to the distance between the two installation frames.

[0010] As a further solution of the present invention: The inner wall of the groove fits with the outer wall of one end of the convex block, and a semi-circular surface is provided at one end of the convex block located inside the connection slot.

[0011] As a further solution of the present invention: The inner wall of the slot fits with the outer wall of the plug rod, and a first tooth groove is provided on the outer wall of the plug rod, and the first tooth groove meshes with the first spur gear.

[0012] As a further solution of the present invention: the inner wall of the installation groove fits with the outer wall of the installation block.

[0013] As a further solution of the present invention: the inner wall of the rotating groove is provided with ratchet teeth, one end of the clamping block is engaged with the ratchet teeth, one end of the extrusion block located in the inner cavity of the square hole is provided with an inclined surface, and second tooth grooves are formed on the outer walls of the extrusion block and the clamping block, and the second tooth grooves are engaged with the second spur gear.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By providing an adjustment mechanism, rotate the rotating plate to separate it from the baffle, cancel the fixation of the baffle, rotate the baffle to open the movable groove, the rotation of the baffle drives the partition to displace out between the two installation frames, and then use a tool to rotate the rotating disc. The rotation of the rotating disc drives the threaded rod to rotate, and the rotation of the threaded rod drives the upper and lower installation frames to move towards the middle installation frame, facilitating the replacement of the tool. The position of the tool can be moved to make the tool close to the operation platform, which is convenient for replacing the tool.

[0015] 2. By providing an installation mechanism, when the installation frames approach each other, the positioning plate displaces so that the slot and the insertion rod are aligned. Insert a square tool into the square hole and operate to rotate the rotating block. At this time, the clamping block separates from the rotating groove, enabling the rotating block to rotate in the rotating groove. The rotation of the rotating block drives the insertion rod to displace, and the insertion rod displaces out of the installation groove, canceling the shielding of the installation block. At this time, the installation block can be moved out of the installation groove to replace the tool, facilitating the quick installation and disassembly of the tool, and automatically strengthening the tool when the installation frames move away from each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the back of the disc body of the present invention; Figure 3 is an installation schematic diagram of the baffle of the present invention; Figure 4 is an installation schematic diagram of the installation frame of the present invention; Figure 5 is a schematic structural diagram of the installation frame of the present invention; Figure 6 is an installation schematic diagram of the connecting rod of the present invention; Figure 7 is of the present invention Figure 6 magnified view of A in; Figure 8 is an installation schematic diagram of the tool of the present invention; Figure 9 is an installation schematic diagram of the insertion rod of the present invention; Figure 10 Schematic structural diagram of the first spur gear and the rotating block of the present invention; Figure 11 Schematic structural diagram of the rotating groove of the present invention; Figure 12 Schematic internal structure diagram of the rotating block of the present invention.

[0017] In the figure: 1, disc body; 2, cutter; 3, adjusting mechanism; 301, movable groove; 302, mounting frame; 303, baffle; 304, partition; 305, rotating plate; 306, through hole; 307, threaded hole; 308, limiting rod; 309, threaded rod; 310, rotating disc; 311, connecting rod; 4, mounting mechanism; 401, mounting block; 402, mounting groove; 403, connecting groove; 404, groove; 405, positioning plate; 406, first spring; 407, convex block; 408, slot; 409, inserting rod; 410, first spur gear; 411, rotating block; 412, rotating groove; 413, square hole; 414, clamping block; 415, second spring; 416, second spur gear; 417, extrusion block. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "setting" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The embodiments of the present invention will be described below according to the overall structure of the present invention.

[0020] Please refer to Figures 1 to 12 Figures 1 to 12 , in the embodiment of the present invention, a special anti-impact shield cutter head for karst strata includes a cutter head body 1, a cutter 2 is installed on the cutter head body 1, the position of the cutter 2 is adjusted by an adjusting mechanism 3, and the cutter 2 is installed by an installation mechanism 4. The adjusting mechanism 3 includes a movable groove 301, the movable groove 301 is opened on the outer wall of the cutter head body 1, and three installation frames 302 are arranged on the inner wall of the movable groove 301. The middle installation frame 302 is fixedly connected to the inner wall of the movable groove 301, and the upper and lower installation frames 302 are slidably connected to the inner wall of the movable groove 301. A baffle 303 for shielding the installation frame 302 is rotatably connected to the outer wall of the cutter head body 1. One end of the baffle 303 is fixedly connected to a partition 304. A rotating plate 305 is rotatably connected to the outer wall of the cutter head body 1 on one side of the baffle 303. A through hole 306 is opened on the outer wall of the rotating plate 305. A threaded hole 307 is opened on the outer wall of the cutter head body 1 between the baffle 303 and the rotating plate 305. The rotating plate 305 is fixedly connected to the cutter head body 1 through a bolt and the threaded hole 307. A limiting rod 308 and a threaded rod 309 passing through the installation frame 302 are symmetrically arranged on the inner wall of the movable groove 301. The limiting rod 308 is fixedly connected to the movable groove 301, and the threaded rod 309 is rotatably connected to the movable groove 301. A rotating disc 310 is fixedly connected to the outer wall of the threaded rod 309. Two connecting rods 311 are rotatably connected between the two installation frames 302, and the two connecting rods 311 are rotatably connected to each other.

[0021] In this embodiment: When replacing the cutter 2, take out the bolt from the threaded hole 307, make the bolt move out of the through hole 306, cancel the fixation of the rotating plate 305, rotate the rotating plate 305 to separate from the baffle 303, cancel the fixation of the baffle 303, rotate the baffle 303 to open the movable groove 301. The rotation of the baffle 303 drives the partition 304 to displace out between the two installation frames 302. Then use a tool to rotate the rotating disc 310. The rotation of the rotating disc 310 drives the threaded rod 309 to rotate. The rotation of the threaded rod 309 drives the upper and lower installation frames 302 to move towards the middle installation frame 302 to replace the cutter 2. After replacing the cutter 2, rotate the rotating disc 310 to drive the installation frame 302 to reset. Then rotate the baffle 303. The baffle 303 and the partition 304 shield the movable groove 301. At the same time, the partition 304 is located between the two installation frames 302 for strengthening the position of the installation frame 302. Rotate the rotating plate 305 to contact the baffle 303 to fix the baffle 303. At the same time, pass the bolt through the through hole 306 and connect it into the threaded hole 307 to fix the rotating plate 305. This design facilitates moving the position of the cutter 2 when replacing the cutter 2, so that the cutter 2 is close to the operation platform, which is convenient for replacing the cutter 2.

[0022] Please pay special attention toFigures 6 to 12 , the installation mechanism 4 includes an installation block 401. The installation block 401 is fixedly connected to the top and bottom of the tool 2. An installation slot 402 for the installation block 401 to enter is provided in the inner cavity of the installation frame 302. A connection slot 403 for the connecting rod 311 to be rotatably connected is provided on the outer wall of the installation frame 302. A groove 404 is provided at one end of the connecting rod 311 facing the installation frame 302. A plug rod 409 extending into the inner cavity of the installation slot 402 is slidably connected inside the installation frame 302. A positioning plate 405 is slidably connected inside the installation frame 302 at one end of the plug rod 409. A first spring 406 is connected between the positioning plate 405 and the installation frame 302. A convex block 407 is fixedly connected to one end of the positioning plate 405. The convex block 407 extends into the inner cavity of the connection slot 403. A slot 408 is provided on the outer wall of the positioning plate 405. The installation mechanism 4 further includes a first spur gear 410. The first spur gear 410 is rotatably connected inside the installation frame 302 and is located on the outer wall of the plug rod 409. A rotating block 411 is fixedly connected to one end of the first spur gear 410. The rotating block 411 is rotatably connected to the outer wall of the installation frame 302. A rotating slot 412 for the rotating block 411 to rotate is provided on the outer wall of the installation frame 302. A square hole 413 is provided at one end of the rotating block 411. A clamping block 414 extending out of the rotating block 411 is slidably connected inside the rotating block 411. A second spring 415 is connected between the clamping block 414 and the rotating block 411. A second spur gear 416 is rotatably connected to the outer wall of the clamping block 414 inside the rotating block 411. An extrusion block 417 is slidably connected to the outer wall of the second spur gear 416 inside the rotating block 411. The extrusion block 417 extends into the inner cavity of the square hole 413.

[0023] In this embodiment: When the mounting frames 302 approach each other, the connecting rod 311 rotates within the connecting groove 403. The rotation of the connecting rod 311 pushes the convex block 407 to displace out of the groove 404. The displacement of the convex block 407 drives the positioning plate 405 to displace, squeezing the first spring 406. The displacement of the positioning plate 405 aligns the slot 408 with the plug 409, providing space for the plug 409 to move horizontally. After completion, a square tool is inserted into the square hole 413 to operate and rotate the rotating block 411. At this time, the square tool contacts the extrusion block 417, pushing the extrusion block 417 to displace. The displacement of the extrusion block 417 drives the second spur gear 416 to rotate. The rotation of the second spur gear 416 drives the latch 414 to displace, squeezing the second spring 415. The latch 414 separates from the rotation groove 412, enabling the rotating block 411 to rotate within the rotation groove 412. The rotation of the rotating block 411 drives the first spur gear 410 to rotate. The rotation of the first spur gear 410 drives the plug 409 to displace. The plug 409 displaces through the slot 408 and simultaneously displaces out of the mounting groove 402, removing the blockage of the mounting block 401. At this time, the mounting block 401 can be moved out of the mounting groove 402 to perform the replacement operation on the tool 2.

[0024] After the replacement of the tool 2 is completed, the mounting block 401 moves into the mounting groove 402. Rotating the rotating block 411 drives the first spur gear 410 to rotate. The rotation of the first spur gear 410 drives the plug 409 to displace. The plug 409 displaces into the mounting groove 402 to fix the mounting block 401, thereby completing the installation of the tool 2. At the same time, the plug 409 moves out of the slot 408. When the mounting frames 302 move away from each other, the connecting rod 311 rotates to a vertical state. At this time, the convex block 407 contacts the groove 404, and the positioning plate 405 performs a reset operation under the elastic force of the first spring 406, misaligning the slot 408 with the plug 409, so that the plug 409 has no space to displace, thereby performing a reinforcement operation on the tool 2. This design facilitates the rapid installation and disassembly of the tool 2, and at the same time automatically reinforces the tool 2 when the mounting frames 302 move away from each other.

[0025] Please refer specifically to Figures 2 to 5 , the outer wall of the mounting frame 302 fits with the inner wall of the movable groove 301. The top of the mounting frame 302 is provided with a connection hole and a limit hole. The inner wall of the limit hole fits with the outer wall of the limit rod 308. The outer wall of the threaded rod 309 is symmetrically provided with external threads. The inner walls of the connection holes on the upper and lower mounting frames 302 are provided with balls matching the external threads.

[0026] In this embodiment: The rotation of the rotating disk 310 drives the rotation of the threaded rod 309. The rotation of the threaded rod 309 drives the upper and lower mounting frames 302 to move towards the middle mounting frame 302. At this time, the mounting frame 302 slides in the moving slot 301, and the limiting rod 308 slides in the limiting hole.

[0027] Please refer particularly to Figures 2 to 5 , the height of the partition plate 304 is equal to the distance between the two mounting frames 302.

[0028] In this embodiment: Rotate the baffle 303. The baffle 303 and the partition plate 304 block the moving slot 301. At the same time, the partition plate 304 is located between the two mounting frames 302 and is used to reinforce the position of the mounting frame 302.

[0029] Please refer particularly to Figures 6 to 12 , the inner wall of the groove 404 fits with the outer wall of one end of the convex block 407. A semi-circular surface is provided at one end of the convex block 407 located inside the connecting slot 403.

[0030] In this embodiment: When the mounting frames 302 approach each other, the connecting rod 311 rotates in the connecting slot 403. The rotation of the connecting rod 311 pushes the convex block 407 to displace out of the groove 404, and the displacement of the convex block 407 drives the positioning plate 405 to displace.

[0031] Please refer particularly to Figures 6 to 12 , the inner wall of the slot 408 fits with the outer wall of the plug rod 409. A first tooth groove is formed on the outer wall of the plug rod 409, and the first tooth groove meshes with the first spur gear 410.

[0032] In this embodiment: The displacement of the positioning plate 405 aligns the slot 408 with the plug rod 409, allowing the plug rod 409 to have space for lateral movement. After completion, use a square tool to insert into the square hole 413 to operate and rotate the rotating block 411. The rotation of the rotating block 411 drives the rotation of the first spur gear 410. The rotation of the first spur gear 410 drives the displacement of the plug rod 409. The plug rod 409 displaces through the slot 408 and at the same time displaces out of the mounting slot 402.

[0033] Please refer particularly to Figures 6 to 12 , the inner wall of the mounting slot 402 fits with the outer wall of the mounting block 401.

[0034] In this embodiment: Move the mounting block 401 out of the mounting slot 402 to replace the tool 2.

[0035] Please refer particularly to Figures 6 to 12, the inner wall of the rotating groove 412 is provided with ratchet teeth, one end of the clamping block 414 is engaged with the ratchet teeth, one end of the extrusion block 417 located in the inner cavity of the square hole 413 is provided with an inclined surface, and second tooth grooves are formed on the outer walls of the extrusion block 417 and the clamping block 414, and the second tooth grooves are engaged with the second spur gear 416.

[0036] In this embodiment: A square tool is inserted into the square hole 413 to operate the rotating block 411 to rotate. At this time, the square tool contacts the extrusion block 417, pushes the extrusion block 417 to displace, the displacement of the extrusion block 417 drives the second spur gear 416 to rotate, the rotation of the second spur gear 416 drives the clamping block 414 to displace, squeezes the second spring 415, and the clamping block 414 is separated from the rotating groove 412, so that the rotating block 411 can rotate in the rotating groove 412.

[0037] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A special impact-resistant shield cutter head for karst strata, comprising a cutter head body (1), on which a cutter (2) is installed, characterized in that, The position of the tool (2) is adjusted by an adjusting mechanism (3), and the tool (2) is installed by an installation mechanism (4). The adjusting mechanism (3) includes a movable groove (301) opened on the outer wall of the disc body (1). The inner wall of the movable groove (301) is provided with three mounting frames (302). The middle mounting frame (302) is fixedly connected to the inner wall of the movable groove (301). The upper and lower mounting frames (302) are slidably connected to the inner wall of the movable groove (301). A baffle (303) for shielding the mounting frame (302) is rotatably connected to the outer wall of the disc body (1). One end of the baffle (303) is fixedly connected to a partition plate (304). A rotating plate (305) is rotatably connected to the outer wall of the disc body (1) on one side of the baffle (303). A through hole (306) is opened on the outer wall of the rotating plate (305). A threaded hole (307) is opened on the outer wall of the disc body (1) between the baffle (303) and the rotating plate (305). The rotating plate (305) is fixedly connected to the disc body (1) by a bolt and the threaded hole (307). The inner wall of the movable groove (301) is symmetrically provided with a limiting rod (308) and a threaded rod (309) passing through the mounting frame (302). The limiting rod (308) is fixedly connected to the movable groove (301). The threaded rod (309) is rotatably connected to the movable groove (301). A rotating disc (310) is fixedly connected to the outer wall of the threaded rod (309). Two connecting rods (311) are rotatably connected between the two mounting frames (302), and the two connecting rods (311) are rotatably connected to each other.

2. The special impact-resistant shield cutterhead for karst strata according to claim 1, wherein The installation mechanism (4) includes a mounting block (401) fixedly connected to the top and bottom of the tool (2). An installation slot (402) for the mounting block (401) to enter is opened in the inner cavity of the mounting frame (302). A connection slot (403) for the connecting rod (311) to be rotatably connected is opened on the outer wall of the mounting frame (302). A groove (404) is opened at one end of the connecting rod (311) facing the mounting frame (302). A plug rod (409) extending into the inner cavity of the installation slot (402) is slidably connected to the inside of the mounting frame (302). A positioning plate (405) is slidably connected to one end of the plug rod (409) inside the mounting frame (302). A first spring (406) is connected between the positioning plate (405) and the mounting frame (302). One end of the positioning plate (405) is fixedly connected to a convex block (407), and the convex block (407) extends into the inner cavity of the connection slot (403). A slot (408) is opened on the outer wall of the positioning plate (405).

3. The special impact-resistant shield cutterhead for karst strata according to claim 2, wherein The installation mechanism (4) further includes a first spur gear (410). The first spur gear (410) is rotatably connected to the inside of the installation frame (302) and is located on the outer wall of the insertion rod (409). One end of the first spur gear (410) is fixedly connected to a rotating block (411). The rotating block (411) is rotatably connected to the outer wall of the installation frame (302). A rotating groove (412) for the rotating block (411) to rotate is formed on the outer wall of the installation frame (302). A square hole (413) is formed at one end of the rotating block (411). A clamping block (414) extending out of the rotating block (411) is slidably connected to the inside of the rotating block (411). A second spring (415) is connected between the clamping block (414) and the rotating block (411). A second spur gear (416) is rotatably connected to the outer wall of the clamping block (414) inside the rotating block (411). An extrusion block (417) is slidably connected to the outer wall of the second spur gear (416) inside the rotating block (411). The extrusion block (417) extends into the inner cavity of the square hole (413).

4. The special impact-resistant shield cutter head for karst strata according to claim 1, characterized in that, The outer wall of the installation frame (302) is in fit with the inner wall of the movable groove (301). A connection hole and a limit hole are formed at the top of the installation frame (302). The inner wall of the limit hole is in fit with the outer wall of the limit rod (308).

5. The special impact-resistant shield cutter head for karst strata according to claim 4, wherein External threads are symmetrically arranged on the outer wall of the threaded rod (309). Ball bearings matching the external threads are arranged on the inner walls of the connection holes on the upper and lower installation frames (302).

6. The special impact-resistant shield cutter head for karst strata according to claim 1, characterized in that The height of the partition board (304) is equal to the distance between the two installation frames (302).

7. The special impact-resistant shield cutterhead for karst strata according to claim 3, wherein The inner wall of the groove (404) is in fit with one end outer wall of the convex block (407). A semi-circular surface is arranged at one end of the convex block (407) located inside the connection groove (403).

8. The special impact-resistant shield cutter head for karst strata according to claim 3, characterized in that, The inner wall of the slot (408) is in fit with the outer wall of the insertion rod (409). A first tooth groove is formed on the outer wall of the insertion rod (409). The first tooth groove is meshed with the first spur gear (410).

9. The special impact-resistant shield cutter head for karst strata according to claim 3, characterized in that, The inner wall of the installation groove (402) is in fit with the outer wall of the installation block (401).

10. The special impact-resistant shield cutterhead for karst strata according to claim 3, characterized in that, Rachises are arranged on the inner wall of the rotating groove (412). One end of the clamping block (414) is engaged with the rachises. A slope is arranged at one end of the extrusion block (417) located in the inner cavity of the square hole (413). Second tooth grooves are formed on the outer walls of the extrusion block (417) and the clamping block (414). The second tooth grooves are meshed with the second spur gear (416).

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