Cutting cutter head structure of slurry balance push bench

Abstract

The utility model provides a cutting cutterhead structure of a slurry balance push bench, which comprises a mounting frame, a fixing assembly and a cutterhead, the fixing assembly comprises a fixing frame, a connecting plate and a two-way screw rod, the fixing frame is provided with a strip-shaped opening, the connecting plate is connected with sawteeth, the sawteeth are movably arranged in an inner cavity of the fixing frame, and the two-way screw rod is arranged in the inner cavity of the fixing frame. A bearing seat A and a sliding block A are installed at the two ends of the bidirectional lead screw, a driving motor A is connected to the end of the bidirectional lead screw, one end of a connecting rod is connected to the sliding block A in a hinged mode, an L-shaped plate is connected to the other end of the connecting rod in a hinged mode, a rack and a sliding plate are connected to the L-shaped plate, and the rack is meshed with sawteeth. A sliding rod is movably arranged in the sliding plate, and the motor A is connected to the mounting frame through a rack A. And the fixing frame and the connecting plate are fixed, so that the mounting frame and the cutter disc are fixed, and the problem that the cutter disc is inconvenient to mount and dismount in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a cutting disc structure of a mud-water balanced pipe jacking machine. Background Art

[0002] With the development of society, the emergence of various civil engineering construction equipment has greatly facilitated the construction of civil engineering. Among them, the mud-water balance pipe jacking machine is a relatively common civil engineering equipment. The main working principle of the mud-water balance pipe jacking machine is to use mud and water as a medium to balance the soil pressure, and at the same time to maintain the stability of the excavation surface by controlling the mud and water pressure. The mud-water balance pipe jacking machine is mainly composed of a pipe jacking machine head, a ground operating table and other auxiliary equipment, and the cutting disc structure is the main structure of the pipe jacking machine head. Through the continuous rotation of the cutting disc and the continuous supply of mud and water in the mud inlet pipe, the pipe jacking machine head can perform excavation work;

[0003] The patent application number is CN202310848046.8, and the application date is 2023-07-12. It discloses a cutting disc structure of a slurry balanced pipe jacking machine, including a mounting frame, a tool disc, a tool group, a driving mechanism and a telescopic mechanism; the tool disc is movably connected to the mounting frame, and the tool disc is provided with a rotating shaft passing through the mounting frame and connected to an external driving source; the driving mechanism is installed on the inner wall of the mounting frame; the telescopic mechanism is installed on the tool disc, located on a side close to the mounting frame, and the telescopic mechanism is connected to the output end of the driving mechanism; the tool group is divided into a fixed tool and a telescopic tool, the fixed tool is installed on the side of the tool disc away from the mounting frame, and the telescopic tool is slidably connected to the telescopic mechanism.

[0004] The above patent has the tool disc driven by an external driving source to rotate along the mounting frame, the driving mechanism drives the telescopic mechanism to operate, and the telescopic tool is telescopically slid along the telescopic mechanism, and the tool disc is continuously rotated, so that the telescopic tool is telescopically slid along the telescopic mechanism during the rotation process, and the telescopic tool is continuously telescopically contacted with the rock wall, so that the rock wall is hit by the telescopic tool and cooperates with the fixed tool to rotate and excavate, and the rock layer is subjected to multi-directional force to improve the excavation efficiency. However, in the cutting tool disc structure, the tool disc and the mounting frame are movably connected, and the tool disc is provided with a rotating shaft that passes through the mounting frame and is externally connected to the driving source, and it is not convenient to quickly install and disassemble the tool disc and the mounting frame, which makes it inconvenient to quickly replace and repair the tool disc. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies of the above-mentioned prior art and to provide a cutting disc structure for a slurry-water balanced pipe jacking machine, in which the L-shaped plate in the fixing assembly drives the clamping plate to clamp the connecting plate, thereby fixing the fixing frame and the connecting plate, thereby fixing the installation frame and the tool disc, and solving the existing problem of inconvenience in installing and disassembling the tool disc.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A cutting disc structure of a mud-water balanced pipe jacking machine comprises a mounting frame, a fixing assembly and a tool disc, the fixing assembly comprises a fixing frame, a connecting plate and a bidirectional screw rod, the fixing frame is provided with a strip opening, the connecting plate is connected with a sawtooth, the sawtooth is movably arranged in the inner cavity of the fixing frame, bearing seats A and sliders A are installed at both ends of the bidirectional screw rod, the end of the bidirectional screw rod is connected with a driving motor A, one end of a connecting rod is hingedly connected to the slider A, the other end of the connecting rod is hingedly connected to an L-shaped plate, a rack and a slide plate are connected to the L-shaped plate, the rack is meshed with the sawtooth, a slide rod is movably arranged in the slide plate, the motor A is connected to the mounting frame through a frame A, the connecting plate is connected to the tool disc, and the fixing frame is fixedly connected to the inner wall of the mounting frame.

[0008] There are two bearing seats A and two sliders A, and the sliders A are arranged between the bearing seats A. One slider A is a left-handed nut, and the other slider A is a right-handed nut. The installation frame is a cylindrical structure, and there are multiple fixing components, which are evenly distributed on the inner wall of the installation frame.

[0009] The upper and lower sides of the fixed frame are both provided with strip openings, and the strip openings are communicated with the fixed frame. There are two L-shaped plates and two racks. The sliding rod is vertically arranged between the L-shaped plates. A mounting seat is also arranged on the L-shaped plate. Through holes are arranged on the mounting seat and the slide plate, and the sliding rod is movably arranged in the through hole.

[0010] The front end face of the tool disc is provided with a fixed tool and a telescopic tool, the telescopic tool is connected to a movable plate 302, the movable plate is connected to a fixed bar, the fixed bar is connected to a slider B, an internal threaded hole is provided in the slider B, a screw rod A is sleeved in the internal threaded hole, the end of the screw rod A is connected to a drive motor B, and the drive motor B is fixed to the rear end face of the tool disc through a frame B.

[0011] There are multiple fixing bars evenly distributed around the slider B. The number of the movable plate is the same as that of the fixing bars. A limiting rod is movably arranged on the movable plate, and limiting nuts are sleeved on both ends of the limiting rod.

[0012] A cleaning assembly is also provided on the outer side of the installation frame, and the cleaning assembly includes a collar, a screw rod B, a flushing pipe, a water distributor, a water inlet pipe and a driving motor C. A slider C, a bearing seat B and a groove are provided on the inner side wall of the collar. The slider C is inserted into the screw rod B through an internal threaded hole. One end of the screw rod B is connected to the bearing seat B, and the other end is connected to a single groove wheel. A multi-groove wheel is connected to the rotating shaft of the driving motor C. The single groove wheel and the multi-groove wheel are connected by a belt. The driving motor C is connected to the rear end face of the installation frame through the frame C. A flushing pipe is provided in the groove. The flushing pipe is connected to the water distributor through a connecting pipe, and the water distributor is connected to the water inlet pipe.

[0013] The installation frame is also provided with a through slot, one end of the slider C is connected to the inner wall of the collar, and the other end passes through the through slot.

[0014] There are multiple bearing seats B, which are evenly distributed on the inner wall of the ring. The number of the through grooves, sliders C, screw rods B and single-groove wheels is the same as that of the bearing seats B. The single-groove wheels are evenly distributed around the multi-groove wheels.

[0015] The beneficial effects of the utility model are:

[0016] 1. By setting a fixing component, the bidirectional lead screw is driven to rotate by the driving motor A, and under the action of the threaded connection between the bidirectional lead screw and the slider A, the slider A drives the L-shaped plate to move through the connecting rod, so that the L-shaped plate drives the rack to move, and then the connection between the connecting plate and the rack is realized through the meshing connection between the saw teeth, and the connecting plate is fixed inside the fixed frame through the clamping between the connecting plate and the rack, thereby realizing the fixation between the installation frame and the tool disc, facilitating the installation and disassembly of the tool disc, and then facilitating the replacement and maintenance of the tool disc.

[0017] 2. By setting up a cleaning component, the screw B is driven to rotate by the driving motor C, and the ring is driven to move by the screw B and the slider C, so that the ring is located on the outside of the tool disc, and a high-pressure water flow is provided to the flushing pipe through the water inlet pipe and the water distributor, and then the tool disc is flushed and cleaned through the flushing pipe and the high-pressure water flow, which is convenient for cleaning the tool disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the fixed component;

[0020] Figure 3 It is a structural schematic diagram of an L-shaped plate;

[0021] Figure 4 It is a structural schematic diagram of a bidirectional screw rod;

[0022] Figure 5 This is a schematic diagram of the structural disassembly of the telescopic tool;

[0023] Figure 6 It is a schematic diagram of the structure of the cleaning component;

[0024] Figure 7 is a schematic diagram of the structure of the ring;

[0025] Figure 8 It is the structural schematic diagram of screw rod B;

[0026] Fig. 9 It is a schematic diagram of the structure of the flushing pipe;

[0027] As shown in the figure: 1-installation frame; 2-fixed component; 3-tool plate; 4-cleaning component; 101-through slot; 201-fixed frame; 201a-strip opening; 202-connecting plate; 203-rack; 204-sawtooth; 205-L-shaped plate; 205a-installation seat; 205b-slide bar; 205c-slide plate; 206-bidirectional screw rod; 206a-bearing seat A; 206b-frame A; 206c-drive motor A; 207-slide block A; 208-connecting rod; 301-fixed tool; 302-movable plate; 302 a-limit rod; 302b-limit nut; 303-telescopic tool; 304-drive motor B; 304a-frame B; 305-screw A; 306-slider B; 307-fixing bar; 401-ring; 401a-slider C; 401b-groove; 402b-single groove wheel; 402-screw B; 402a-bearing seat B; 403-flushing pipe; 404-connecting pipe; 405-water distributor; 406-water inlet pipe; 407-drive motor C; 407a-frame C; 407b-multi-groove wheel; 407c-belt. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Example 1

[0030] like Figures 1 to 9As shown, a cutting disc structure of a mud-water balanced pipe jacking machine includes a mounting frame 1, a fixing assembly 2 and a tool disc 3, wherein the fixing assembly 2 includes a fixing frame 201, a connecting plate 202 and a bidirectional screw rod 206, wherein the fixing frame 201 is provided with a strip opening 201a, the connecting plate 202 is connected with a sawtooth 204, and the sawtooth 204 is movably arranged in the inner cavity of the fixing frame 201, and bearing seats A206a and sliders A207 are installed at both ends of the bidirectional screw rod 206, and the end of the bidirectional screw rod 206 is connected with a driving motor A 206c, one end of the connecting rod 208 is hingedly connected to the slider A207, and the other end of the connecting rod 208 is hingedly connected to the L-shaped plate 205, the L-shaped plate 205 is connected with a rack 203 and a slide plate 205c, the rack 203 is meshed with the saw teeth 204, a slide bar 205b is movably arranged in the slide plate 205c, the motor A206c is connected to the installation frame 1 through the frame A206b, the connecting plate 202 is connected to the tool disc 3, and the fixed frame 201 is fixedly connected to the inner wall of the installation frame 1.

[0031] There are two bearing seats A206a and two sliders A207, and the sliders A207 are arranged between the bearing seats A206a. One slider A207 is a left-handed nut, and the other slider A207 is a right-handed nut. The installation frame 1 is a cylindrical structure, and there are multiple fixing components 2, which are evenly distributed on the inner wall of the installation frame 1.

[0032] The upper and lower sides of the fixed frame 201 are both provided with strip openings 201a, and the strip openings 201a are communicated with the fixed frame 201. There are two L-shaped plates 205 and two racks 203. The slide bar 205b is vertically arranged between the L-shaped plates 205. A mounting seat 205a is also arranged on the L-shaped plate 205. Through holes are arranged on the mounting seat 205a and the slide plate 205c, and the slide bar 205b is movably arranged in the through hole.

[0033] The front end face of the tool disc 3 is provided with a fixed tool 301 and a telescopic tool 303, the telescopic tool 303 is connected to a movable plate 302, the movable plate 302 is connected to a fixed bar 307, the fixed bar 307 is connected to a slider B306, the slider B306 is provided with an internal threaded hole, the internal threaded hole is sleeved with a screw rod A305, the end of the screw rod A305 is connected to a drive motor B304, and the drive motor B304 is fixed to the rear end face of the tool disc 3 through a frame B304a.

[0034] There are multiple fixing bars 307, which are evenly distributed around the slider B306. The number of the movable plate 302 is the same as that of the fixing bars 307. A limiting rod 302a is movably provided on the movable plate 302, and both ends of the limiting rod 302a are sleeved with limiting nuts 302b.

[0035] The outer side of the installation frame 1 is also provided with a cleaning component 4, which includes a collar 401, a screw rod B402, a flushing pipe 403, a water distributor 405, a water inlet pipe 406 and a driving motor C407. The inner side wall of the collar 401 is provided with a slider C401a, a bearing seat B402a and a groove 401b. The slider C401a is inserted into the screw rod B402 through an internal threaded hole. One end of the screw rod B402 is connected to the bearing seat B402a, and the other end A single groove wheel 402b is connected, and a multi-groove wheel 407b is connected to the rotating shaft of the driving motor C407. The single groove wheel 402b and the multi-groove wheel 407b are connected by a belt 407c. The driving motor C407 is connected to the rear end surface of the installation frame 1 through a frame C407a. A flushing pipe 403 is arranged in the groove 401b. The flushing pipe 403 is connected to the water distributor 405 through a connecting pipe 404, and the water distributor 405 is connected to the water inlet pipe 406.

[0036] The installation frame 1 is also provided with a through slot 101 , one end of the slider C401 a is connected to the inner wall of the collar 401 , and the other end passes through the through slot 101 .

[0037] There are multiple bearing seats B402a, which are evenly distributed on the inner wall of the ring 401. The number of the through grooves 101, the sliders C401a, the screw rods B402 and the single groove wheels 402b is the same as that of the bearing seats B402a. The single groove wheels 402b are evenly distributed around the multi-groove wheels 407b.

[0038] The length of the flushing pipe 403 is greater than the width of the installation frame 1 , the collar 401 is an annular wall structure, and the water divider 405 is a circular ring structure.

[0039] It includes an installation frame 1, a fixing component 2 and a tool disc 3, and the fixing component 2 includes a fixing frame 201, a connecting plate 202, a rack 203, a sawtooth 204 and an L-shaped plate 205. The rack 203 is driven to move by the L-shaped plate 205, and the connecting plate 202 is fixed in the fixing frame 201 by the rack 203, thereby solving the existing problem of inconvenience in installing and disassembling the tool disc 3.

[0040] Specifically, a portion of the bottom surface of the fixed frame 201 is fixedly connected to the inner side wall of the installation frame 1, and the internal gap of the fixed frame 201 is matched with a connecting plate 202. The front ends of the connecting plate 202 are respectively welded to the two sides of the rear end surface of the tool disc 3, and the strip openings 201a at the top and bottom of the fixed frame 201 are movably connected with a rack 203. A plurality of groups of saw teeth 204 are evenly welded on the facing surfaces of the connecting plate 202 and the rack 203. The upper and lower parts of the outer wall of one side of the fixed frame 201 are vertically movably connected with an L-shaped plate 205, and the lateral support arms of the L-shaped plate 205 are fixedly connected to the rack 203. The fixed frame 201 and the connecting plate 202 are arranged to fix the tool disc 3 and the installation frame 1, the rack 203 is arranged to fix the connecting plate 202 inside the fixed frame 201, and the L-shaped plate 205 is arranged to drive the rack 203 to move up and down.

[0041] The rear end face of the fixed frame 201 is welded to the inner wall of the installation frame 1 respectively, and the outer wall of one side of the fixed frame 201 is connected with a bidirectional screw rod 206 along the horizontal rotation, and the outer wall of the bidirectional screw rod 206 is threaded with sliders A207 on both sides, and the top and bottom of the slider A207 are movably connected to one end of a connecting rod 208, and the other end of the connecting rod 208 is movably connected to the front and rear ends of the vertical support arm of the L-shaped plate 205 respectively. The setting of the bidirectional screw rod 206 and the slider A207 is used to drive the connecting rod 208 to move left and right, and the setting of the connecting rod 208 is used to drive the L-shaped plate 205 to move up and down.

[0042] The upper and lower parts of the outer wall of one side of the fixed frame 201 are fixedly connected with mounting seats 205a, and the adjacent mounting seats 205a are vertically fixedly connected with sliding rods 205b, and the sliding rods 205b are located between the mounting frame 1 and the two-way screw rod 206. The upper and lower parts of the outer wall of the sliding rod 205b are movably sleeved with slide plates 205c, and one side of the slide plate 205c is respectively welded to the vertical support arm of the L-shaped plate 205. The setting of the mounting seat 205a is used to install the sliding rod 205b, and through the setting of the sliding rod 205b and the slide plate 205c The L-shaped plate 205 is movably installed on the fixed frame 201, and the rotation of the bidirectional screw rod 206 drives the two sliders A to move closer or farther away, thereby making the two L-shaped plates 205 move closer or farther away (in the through hole of the mounting seat 205a, there is a gap between the end of the slide rod 205b and the L-shaped plate 205, and the L-shaped plate 205 moves up and down along the slide rod 205b, and the moving position is within the gap), thereby making the two racks 203 move closer or farther away, and finally achieving the engagement or disengagement of the rack 203 with the saw teeth 204.

[0043] The front and rear ends of the outer wall on one side of the fixed frame 201 are fixedly connected with the bearing seat A206a, and the two ends of the bidirectional screw rod 206 are rotatably connected to the inner side of the bearing seat A206a. The two sides of the rear end surface of the installation frame 1 are fixedly connected with the drive motor A206c through the frame A206b, and the output shaft of the drive motor A206c is fixedly connected to the rear end of the bidirectional screw rod 206. The bearing seat A206a is used to install the bidirectional screw rod 206, and the frame A206b is used to install the drive motor A206c, and the bidirectional screw rod 206 is driven to rotate by the drive motor A206c.

[0044] A plurality of fixed tools 301 are welded at even intervals around the front end surface of the tool disc 3. A plurality of movable plates 302 are movably connected in the longitudinal direction inside the tool disc 3. A plurality of telescopic tools 303 are welded at even intervals on the front end surface of the movable plate 302. The front end of the telescopic tool 303 penetrates the front end surface of the tool disc 3 and extends to the front end of the tool disc 3. Excavation work is performed by setting the fixed tool 301 and the telescopic tool 303. The movable plate 302 is used to drive the telescopic tool 303 to move.

[0045] The rear end face of the tool disk 3 is fixedly connected to the driving motor B304 through the frame B304a, and the output shaft of the driving motor B304 rotates and passes through the rear end face of the tool disk 3, and is fixedly connected to the screw rod A305, and the screw rod A305 is away from, and one end of the driving motor B304 is rotatably connected to the inner front end of the tool disk 3, and a slider B306 is threadedly sleeved on the outer wall of the screw rod A305 (the screw rod A305 corresponds to the internal threaded hole of the slider B306), and fixed strips 307 are welded on the outer walls of the slider B306. The ends of the fixing strips 307 away from the slider B306 are respectively welded to the rear end faces of the moving plate 302, and the setting of the driving motor B304 is used to drive the screw rod A305 to rotate, and the setting of the frame B304a is used to install the driving motor B304, and at the same time, the setting of the screw rod A305 and the slider B306 is used to drive the fixing strip 307 to move, and the setting of the fixing strip 307 is used to drive the moving plate 302 to move.

[0046] A plurality of limit rods 302a are welded to the inner front end of the tool disc 3, and the rear ends of the limit rods 302a are movably inserted through the four sides of the end surface of the movable plate 302, and are threadedly sleeved with limit nuts 302b. The limit rods 302a and the limit nuts 302b are used to movably install the movable plate 302 on the inner side of the tool disc 3 and to limit the movement distance of the movable plate 302.

[0047] The tool disc 3 is placed at the front end of the installation frame 1, and the connecting plate 202 is aligned with the fixed frame 201, and then the tool disc 3 is moved toward the direction of the installation frame 1, so that the connecting plate 202 is loosely fitted inside the fixed frame 201, and finally the drive motor A206c is started, and the output shaft of the drive motor A206c drives the bidirectional screw rod 206 to rotate synchronously, and under the action of the threaded connection between the bidirectional screw rod 206 and the slider A207, the slider A207 drives the L-shaped plate 205 to move through the connecting strip 208, and drives the rack 203 to move through the L-shaped plate 205, so that the rack 203 and the connecting plate 202 are engaged with each other through the meshing of the saw teeth 204, thereby achieving the fixation of the tool disc 3.

[0048] Example 2

[0049] A cleaning component 4 is also provided on the outside of the mounting frame 1, and the cleaning component 4 includes a collar 401, a screw rod B402, a flushing pipe 403, a water distributor 405 and a water inlet pipe 406. The collar 401 is driven to move by the screw rod B402, and the tool disc 3 is flushed and cleaned by the high-pressure water flow in the flushing pipe 403, thereby solving the existing problem of being inconvenient to flush and clean the tool disc 3.

[0050] The collar 401 is movably sleeved on the outer side of the installation frame 1 through the screw rod B402, and the flushing pipe 403 is fixedly connected to the inside of the groove 401b on the inner side of the collar 401, and the rear end of the flushing pipe 403 is fixedly connected to the connecting pipe 404. The end of the connecting pipe 404 away from the flushing pipe 403 passes through the inner rear end of the groove 401b and is fixedly connected to a water divider 405. The water divider 405 is fixedly connected to the rear end of the installation frame 1, and a water inlet pipe 406 is fixedly connected to the upper rear end surface of the water divider 405. The collar 401 is used to install structures such as the flushing pipe 403 and drive the flushing pipe 403 to move. The screw rod B402 is used to drive the collar 401 to move. The connecting pipe 404 and the water divider 405 are used to provide high-pressure water flow to the flushing pipe 403, and provide high-pressure water flow to the water divider 405 through the setting of the water inlet pipe 406.

[0051] The outer wall of the mounting frame 1 is provided with a plurality of through grooves 101 at equal intervals along the circumferential direction, and a plurality of bearing seats B402a are welded at equal intervals along the circumferential direction at the inner front end of the mounting frame 1, the front end of the screw rod B402 is rotatably connected to the inside of the bearing seat B402a, the rear end of the screw rod B402 is rotatably penetrated through the rear end surface of the mounting frame 1 and is sleeved with a single groove wheel 402b, a slider C401a is threadedly sleeved on the outer wall of the screw rod B402, one side of the slider C401a movably penetrates the through groove 101 and is welded to the inner side surface of the collar 401 at equal intervals along the circumferential direction, the bearing seat B402a is provided for installing the screw rod B402, the single groove wheel 402b is provided for driving the screw rod B402 to rotate, and the slider C401a is provided for driving the collar 401 to move.

[0052] The inner rear end of the mounting frame 1 is fixedly connected with a driving motor C407 through a frame C407a. The output shaft of the driving motor C407 rotates and passes through the rear end surface of the mounting frame 1, and is sleeved with a multi-groove wheel 407b. The single-groove wheel 402b and the multi-groove wheel 407b are connected by a belt 407c. The setting of the driving motor C407 is used to drive the multi-groove wheel 407b to rotate, and the driving motor C407 is installed through the setting of the frame C407a. At the same time, the single-groove wheel 402b and the belt 407c are used to drive the single-groove wheel 402b to rotate, thereby driving the screw rod B402 to rotate.

[0053] Start the drive motor C407, and the output shaft of the drive motor C407 drives the multi-groove wheel 407b to rotate synchronously, and under the transmission action of the belt 407c, the single-groove wheel 402b drives the screw rod B402 to rotate synchronously, and under the action of the threaded connection between the screw rod B402 and the slider C401a, the slider C401a drives the ring 401 to move, so that the ring 401 moves to the outside of the tool disk 3, and then provides high-pressure water flow to the water distributor 405 through the water inlet pipe 406, and the high-pressure water flow enters the flushing pipe 403 through the water distributor 405 and the connecting pipe 404, and is finally sprayed on the tool disk 3 through the flushing pipe 403, thereby cleaning the tool disk 3.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting disc structure of a slurry-water balanced pipe jacking machine, comprising a mounting frame (1), a fixing assembly (2) and a cutting disc (3), characterized in that: The fixing assembly (2) comprises a fixing frame (201), a connecting plate (202) and a bidirectional screw rod (206); the fixing frame (201) is provided with a strip opening (201a); the connecting plate (202) is connected with a saw tooth (204); the saw tooth (204) is movably arranged in the inner cavity of the fixing frame (201); bearing seats A (206a) and sliders A (207) are installed at both ends of the bidirectional screw rod (206); the end of the bidirectional screw rod (206) is connected with a driving motor A (206c); the slider A (207) is hingedly connected with a connecting rod (206a); One end of the connecting rod (208) and the other end of the connecting rod (208) are hingedly connected to an L-shaped plate (205); a rack (203) and a slide plate (205c) are connected to the L-shaped plate (205); the rack (203) is meshed with the saw teeth (204); a slide bar (205b) is movably arranged inside the slide plate (205c); the motor A (206c) is connected to the installation frame (1) through the frame A (206b); the connecting plate (202) is connected to the tool disc (3); and the fixed frame (201) is fixedly connected to the inner wall of the installation frame (1).

2. The cutting disc structure of the mud-water balanced pipe jacking machine according to claim 1, characterized in that: There are two bearing seats A (206a) and two sliders A (207), and the sliders A (207) are arranged between the bearing seats A (206a). One slider A (207) is a left-handed nut, and the other slider A (207) is a right-handed nut. The installation frame (1) is a cylindrical structure, and there are multiple fixing components (2) that are evenly distributed on the inner wall of the installation frame (1).

3. The cutting disc structure of the mud-water balanced pipe jacking machine according to claim 1, characterized in that: The upper and lower sides of the fixed frame (201) are both provided with strip openings (201a), the strip openings (201a) are communicated with the fixed frame (201), the L-shaped plates (205) and the racks (203) are both two, the slide bar (205b) is vertically arranged between the L-shaped plates (205), the L-shaped plates (205) are also provided with a mounting seat (205a), the mounting seat (205a) and the slide plate (205c) are both provided with through holes, and the slide bar (205b) is movably arranged in the through hole.

4. The cutting disc structure of the mud-water balanced pipe jacking machine according to claim 1, characterized in that: The front end face of the tool disc (3) is provided with a fixed tool (301) and a telescopic tool (303); the telescopic tool (303) is connected to a movable plate (302); the movable plate (302) is connected to a fixing bar (307); the fixing bar (307) is connected to a slider B (306); an internal threaded hole is provided in the slider B (306); a screw rod A (305) is sleeved in the internal threaded hole; the end of the screw rod A (305) is connected to a drive motor B (304); the drive motor B (304) is fixed to the rear end face of the tool disc (3) via a frame B (304a).

5. The cutting disc structure of the mud-water balanced pipe jacking machine according to claim 4, characterized in that: There are a plurality of fixing bars (307) evenly distributed around the slider B (306); the number of the movable plate (302) is the same as that of the fixing bars (307); a limiting rod (302a) is movably provided on the movable plate (302); and limiting nuts (302b) are sleeved on both ends of the limiting rod (302a).

6. The cutting disc structure of the mud-water balanced pipe jacking machine according to claim 1, characterized in that: The outer side surface of the installation frame (1) is also provided with a cleaning assembly (4), the cleaning assembly (4) comprising a collar (401), a screw rod B (402), a flushing pipe (403), a water distributor (405), a water inlet pipe (406) and a driving motor C (407); the inner side wall of the collar (401) is provided with a slider C (401a), a bearing seat B (402a) and a groove (401b); the slider C (401a) is inserted into the screw rod B (402) through an internal threaded hole; one end of the screw rod B (402) is connected to the bearing seat B (402a), and the other end is connected to the bearing seat B (402a). A single groove wheel (402b) is connected to the end of the groove (401b); a multi-groove wheel (407b) is connected to the rotating shaft of the driving motor C (407); the single groove wheel (402b) and the multi-groove wheel (407b) are connected via a belt (407c); the driving motor C (407) is connected to the rear end surface of the installation frame (1) via a frame C (407a); a flushing pipe (403) is arranged in the groove (401b); the flushing pipe (403) is connected to a water distributor (405) via a connecting pipe (404); and the water distributor (405) is connected to a water inlet pipe (406).

7. A cutting disc structure of a mud-water balanced pipe jacking machine as claimed in claim 6, characterized in that: The installation frame (1) is also provided with a through slot (101); one end of the slider C (401a) is connected to the inner wall of the collar (401), and the other end passes through the through slot (101).

8. The cutting disc structure of the mud-water balanced pipe jacking machine according to claim 7, characterized in that: There are multiple bearing seats B (402a) and they are evenly distributed on the inner wall of the collar (401). The number of through grooves (101), sliders C (401a), screw rods B (402) and single groove wheels (402b) is the same as that of the bearing seats B (402a). The single groove wheels (402b) are evenly distributed on the multi-groove wheels (407b).

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