A shield machine cutterhead mud cake cleaning device

Abstract

The application relates to the technical field of a shield machine cutter head, and discloses a shield machine cutter head mud cake cleaning device, which comprises a shield machine shell and a cutter head body. The inner wall of the shield machine shell is fixedly installed with a gear ring, the two sides of the gear ring are fixedly installed with clamping teeth, scraping and flushing components are arranged between every two groups of fixed plates, the inside of the cutter head body corresponding to the scraping and flushing components is provided with oscillation cleaning components, and the fixed plates are provided with stirring and smashing components corresponding to the tracks. Rotation of the first gear drives the rotating column to rotate and extrude the inner wall of the sliding groove, so that the shuttle-shaped plate swings back and forth around the shaft rod, the scraper is driven to scrape and clean the mud cake adhered to the surface of the cutter head back and forth, the rotating shell driven by the high-pressure water is further rotated, the surface of the cutter head is further flushed, the shield machine can be cleaned synchronously during work, mud cake accumulation is avoided, manual cleaning under pressure is avoided, and the safety hidden danger is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of a shield machine cutterhead, in particular to a shield machine cutterhead mud cake cleaning device. BACKGROUND

[0002] The shield machine is a tunnel boring machine using the shield method, which mainly excavates the soil layer through the rotating cutterhead at the front end. When the shield machine is in operation, a layer of dense mud film is formed by the mixture of water and sticky substances in the soil when the soil has high water content and strong viscosity. The mud film will adhere to the cutterhead of the shield machine and gradually accumulate and thicken to form a mud cake, which will greatly reduce the cutting efficiency of the cutterhead and hinder the normal operation of the shield construction.

[0003] At present, the cleaning method for the mud cake is generally to flush the mud cake through the flushing system nozzle arranged on the surface of the cutterhead. However, for some mud cakes that are firmly attached, the flushing system cannot clean the mud cake completely, and then the mud cake is processed by artificial pressure into the warehouse. Moreover, when the shield cutterhead rotates to cut the soil, a lot of rock and soil debris will be generated, which will easily block the flushing system nozzle. Artificial pressure into the warehouse cleaning is not suitable for all geological environments and has certain danger. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, in order to solve the problems that the shield machine cutterhead mud cake is easily blocked by the water washing system, and the artificial pressure into the warehouse cleaning has limitations and danger, the present application provides a shield machine cutterhead mud cake cleaning device.

[0006] (II) Technical solutions

[0007] In order to solve the above-mentioned problems, the present application provides the following technical solutions: a shield machine cutterhead mud cake cleaning device, comprising a shield machine shell and a cutterhead body, the spoke surface of the cutterhead body is provided with a water outlet hole, the inside of the shield machine shell is fixedly installed with a main drive, the output end of the main drive is fixedly installed at the center of the back surface of the cutterhead body, the cutterhead body is rotatably installed at the front end of the shield machine shell through the main drive, the inner wall of the shield machine shell is fixedly installed with a gear ring, and the both sides of the gear ring are fixedly installed with a pawl, the back surface of the cutterhead body is fixedly installed with four groups of fixed plates, and a scraping and flushing component is arranged between every two groups of fixed plates, the inside of the cutterhead body corresponding to the scraping and flushing component is provided with a shock cleaning component, the inner wall of the shield machine shell and close to the gear ring is fixedly installed with a track, and the fixed plate is provided with a stirring and crushing component corresponding to the track.

[0008] Further, the scraping and flushing component comprises a support fixedly installed between the two adjacent groups of fixed plates, a first gear rotatably connected to the middle part of the support, a crank fixedly installed on the side of the first gear away from the support, a rotating column rotatably connected to the end of the crank, a shaft rotatably connected to the back of the cutter body, a shuttle plate fixedly installed at the end of the shaft, a sliding groove opened in one end of the shuttle plate close to the crank, the rotating column inserted into the sliding groove, and scrapers fixedly installed on the two sides of the shuttle plate.

[0009] Further, the support is in an arc shape, the first gear is in engagement with the gear ring outside through the engagement of the teeth, the rotating column is slidably connected in the sliding groove, the shuttle plate abuts against the back of the cutter body, and the included angle between the shuttle plate and the cutter body is an acute angle.

[0010] Further, the rotating shell is rotatably connected between the scrapers and outside the shaft, a water storage chamber is opened in the center of the interior of the rotating shell, a high-pressure water pipe is communicated in the interior of the water storage chamber, four arc-shaped grooves are arrayed at the eccentric position of the rotating shell, one end of each of the arc-shaped grooves penetrates into the water storage chamber, the other end penetrates out of the outer wall of the rotating shell, and a spray head is inserted into one end of the arc-shaped groove penetrating through the outer wall of the rotating shell.

[0011] Further, the oscillation cleaning component comprises a fan gear and a slide rail rotatably connected in the interior of the cutter body, the fan gear is fixedly installed with the shaft, a rack plate is slidably connected in the interior of the slide rail, the rack plate is in engagement with the fan gear, a connecting rod is fixedly installed on the side of the rack plate away from the fan gear, square frames are fixedly installed in the interior of the cutter body and on the two sides of the connecting rod, slide rods are slidably connected in the interior of the square frames, the top end of the connecting rod is fixedly installed in the middle part of the slide rods, and impact heads are fixedly installed at the two ends of the slide rods.

[0012] Further, side frames are fixedly installed on the two sides of the middle part of the square frames and communicated into the interior of the square frames, return springs are fixedly installed in the interior of the side frames, sliding blocks are fixedly installed at the ends of the return springs and slidably connected in the interior of the side frames, a back-shaped frame is sleeved on the outside of one end of the slide rod in the square frame, the opposite corners of the back-shaped frame are chamfered into bevels, a baffle is fixedly installed on the outside of one section of the slide rod in the back-shaped frame, a compression spring is sleeved on the outside of the slide rod and fixedly installed between the inner wall of the back-shaped frame and the baffle.

[0013] Furthermore, the mixing and pulverizing component includes a fixed cylinder fixedly installed inside the end of a fixed plate, and the fixed cylinder is in the shape of an "I". A rotating cylinder is rotatably connected inside the fixed cylinder. A second gear is fixedly installed on the top of the rotating cylinder. The second gear is engaged with the other side of the gear ring. A plug rod is slidably inserted inside the rotating cylinder. An upper blade holder is fixedly installed at the bottom of the rotating cylinder. An upper triangular blade is fixedly installed in an array on the outer side of the upper blade holder. A lower blade holder is fixedly installed at the bottom end of the plug rod. A lower triangular blade is fixedly installed in an array on the outer side of the lower blade holder.

[0014] Furthermore, limit grooves are provided on both sides of the rotating drum, a guide post is rotatably connected to the top of the second gear, and the guide post is rotatably connected in the track. Limit posts are symmetrically fixedly installed on both sides of the top of the insertion rod, and the limit posts are slidably connected in the limit grooves on both sides respectively.

[0015] Furthermore, the inner wall of the fixed cylinder is provided with a track groove, and the track groove is wavy and connected end to end. The distance between the highest and lowest points of the track groove is equal to the distance between the upper and lower tool holders. Friction protrusions are fixedly installed on the opposite side of the upper and lower tool holders, and the limiting post is slidably connected in the track groove.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a shield tunneling machine cutterhead mud cake cleaning device, which has the following beneficial effects:

[0018] 1. The shield tunneling machine cutterhead mud cake cleaning device works by using the first gear to roll along the outer teeth of the gear ring when the cutterhead rotates during excavation. This causes the rotating column to rotate and squeeze the inner wall of the chute, resulting in the shuttle plate swinging back and forth around the shaft. This, in turn, causes the scraper to scrape away the mud cake adhering to the cutterhead surface. At the same time, the rotating shell driven by high-pressure water further washes the cutterhead surface. This allows for simultaneous cleaning while the shield tunneling machine is working, preventing long-term accumulation of mud cake and eliminating the need for manual pressurized entry for cleaning, thus reducing safety hazards.

[0019] 2. The shield machine cutterhead mud cake cleaning device drives the sector gear to deflect back and forth via the shaft, which in turn drives the rack plate to slide back and forth along the slide rail. This, in turn, drives the slide bar to move back and forth synchronously via the connecting rod. As a result, the impact heads at both ends strike the inner wall of the cutterhead back and forth, knocking off the mud cake adhering to the cutterhead surface. At the same time, the compression spring, compressed by the baffle, accumulates elastic potential energy. After the slider is squeezed into the side frame, the compressed spring releases the elastic potential energy instantaneously, increasing the impact force of the impact head. This improves the vibration intensity of the cutterhead and enhances the vibration cleaning effect on the mud cake.

[0020] 3. The shield machine cutterhead mud cake cleaning device, when the second gear rolls along the other side of the gear ring, will drive the rotating drum to rotate, and because the insertion rod is limited by the limiting column, the insertion rod will rotate synchronously with the rotating drum, and the upper cutter holder and the lower cutter holder will rotate while revolving, so the upper three-pronged cutter and the lower three-pronged cutter will stir and crush the slag and debris in the soil cavity, and because the limiting column slides along the track of the track groove, the insertion rod will slide up and down while rotating, so the lower cutter holder will approach the upper cutter holder, and the rock and soil debris can be crushed, so that the slag and debris can be discharged. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0022] Figure 2 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0023] Figure 3 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0024] Figure 4 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0025] Figure 5 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0026] Figure 6 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0027] Figure 7 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0028] Figure 8 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0029] Figure 9 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0030] Figure 10 A perspective view of a shield machine cutterhead mud cake cleaning device is provided.

[0031] In the figure: 1, shield machine shell; 2, cutter head body; 3, water outlet hole; 4, main drive; 5, gear ring; 6, scraping and flushing component; 61, support; 62, first gear; 63, crank; 64, rotating column; 65, shaft rod; 66, shuttle plate; 67, sliding chute; 68, scraper; 69, rotating shell; 691, water storage chamber; 692, arc-shaped groove; 693, spray head; 7, oscillation cleaning component; 71, fan gear; 72, sliding rail; 73, rack plate; 74, connecting rod; 75, square frame; 751, side frame; 752, return spring; 753, sliding block; 76, sliding rod; 761, back-shaped frame; 762, baffle; 763, compression spring; 77, impact head; 8, track; 9, stirring and crushing component; 91, fixed cylinder; 911, track groove; 92, rotating cylinder; 921, limiting groove; 93, second gear; 931, guide column; 94, insertion rod; 941, limiting column; 95, upper cutter seat; 96, upper three-pronged cutter; 97, lower cutter seat; 98, lower three-pronged cutter. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-2 A shield machine cutter head mud cake cleaning device, comprising a shield machine shell 1 and a cutter head body 2, the spoke surface of the cutter head body 2 is provided with a water outlet hole 3, the inside of the shield machine shell 1 is fixedly installed with a main drive 4, the output end of the main drive 4 is fixedly installed at the center of the back of the cutter head body 2, the cutter head body 2 is rotatably installed at the front end of the shield machine shell 1 through the main drive 4, the inner wall of the shield machine shell 1 is fixedly installed with a gear ring 5, and the two sides of the gear ring 5 are fixedly installed with clutches, the back of the cutter head body 2 is fixedly installed with four groups of fixed plates, and a scraping and flushing component 6 is arranged between every two groups of fixed plates, the inside of the cutter head body 2 corresponding to the scraping and flushing component 6 is provided with an oscillation cleaning component 7, the inner wall of the shield machine shell 1 and close to the gear ring 5 is fixedly installed with a track 8, and the fixed plate is provided with a stirring and crushing component 9 corresponding to the track 8.

[0034] Please refer to Figures 3-4, the scraping and flushing component 6 comprises a support 61 fixedly installed between the two adjacent groups of fixed plates, the support 61 is arc-shaped, a first gear 62 is rotationally connected to the middle part of the support 61, the first gear 62 is in meshing connection with the outer side teeth of the gear ring 5, a crank 63 is fixedly installed on the side of the first gear 62 away from the support 61, a rotating column 64 is rotationally connected to the end of the crank 63, a shaft rod 65 is rotationally connected to the back of the cutter disc body 2, a shuttle-shaped plate 66 is fixedly installed at the end of the shaft rod 65, the shuttle-shaped plate 66 abuts against the back of the cutter disc body 2, and the included angle between the shuttle-shaped plate 66 and the cutter disc body 2 is an acute angle, a sliding groove 67 is formed in one end of the shuttle-shaped plate 66 close to the crank 63, the rotating column 64 is slidingly connected in the sliding groove 67, and the rotating column 64 is inserted into the sliding groove 67, scraper plates 68 are fixedly installed on the two sides of the shuttle-shaped plate 66, when the cutter disc body 2 is driven to rotate by the main drive 4, the scraping and flushing component 6 will be driven to rotate as a whole by the fixed plates, and then the first gear 62 will roll along the outer side teeth of the gear ring 5, the rotating column 64 will rotate with the crank 63 as a radius, and then the shuttle-shaped plate 66 will be driven to swing back and forth with the shaft rod 65 as an axis by the extrusion of the inner wall of the sliding groove 67, so that the scraper plates 68 can scrape off the mud cakes adhered to the back of the cutter disc, and the influence of the blockage in the soil cavity on the excavation efficiency of the shield machine is avoided;

[0035] Please refer to Figure 5 , the rotating shell 69 is rotationally connected between the scraper plates 68 and outside the shaft rod 65, a water storage chamber 691 is formed in the center of the interior of the rotating shell 69, and a high-pressure water pipe is in communication in the interior of the water storage chamber 691, four arc-shaped grooves 692 are arrayed at the eccentric position of the rotating shell 69, one end of each arc-shaped groove 692 penetrates into the water storage chamber 691, and the other end penetrates out of the outer wall of the rotating shell 69, a spray head 693 is inserted into one end of the arc-shaped groove 692 penetrating out of the outer wall of the rotating shell 69, and water is discharged into the water storage chamber 691 through the high-pressure water pipe, so that the high-pressure water is discharged outward from the spray head 693 along the arc-shaped groove 692 to flush the cutter disc, and the impact of the high-pressure water along the track of the arc-shaped groove 692 can make the rotating shell 69 rotate, so that the cutter disc surface after the mud cakes are scraped off can be washed in all directions, and the cleaning effect is improved.

[0036] Please refer to Figures 6-7The oscillation cleaning component 7 comprises a sector gear 71 and a sliding rail 72 which are rotationally connected inside the cutter head body 2, the sector gear 71 and the shaft 65 are fixedly installed, the inside of the sliding rail 72 is slidingly connected with a rack plate 73, the rack plate 73 is in meshing connection with the sector gear 71, a connecting rod 74 is fixedly installed on the side of the rack plate 73 away from the sector gear 71, square frames 75 are fixedly installed inside the cutter head body 2 and located on both sides of the connecting rod 74, a sliding rod 76 is slidingly connected through the inside of the square frame 75, and the top end of the connecting rod 74 is fixedly installed in the middle part of the sliding rod 76, impact heads 77 are fixedly installed on both ends of the sliding rod 76, when the shuttle-shaped plate 66 swings back and forth for cleaning, the sector gear 71 will be driven to swing back and forth synchronously through the shaft 65, and then the rack plate 73 in meshing connection with the sector gear 71 will slide back and forth along the inner wall of the sliding rail 72, and then the sliding rod 76 will be driven to move back and forth synchronously through the connecting rod 74, so that the impact heads 77 at both ends will impact the inner wall of the cutter head back and forth, and the mud cake adhered to the surface of the cutter head is knocked off and shaken off;

[0037] Please refer to Figures 6-7 The middle part of the square frame 75 is fixedly installed with side frames 751 which are communicated into the inside of the square frame 75, the inside of the side frame 751 is fixedly installed with return springs 752, the end part of the return spring 752 is fixedly installed with sliding blocks 753 which are slidingly connected inside the side frame 751, a back-shaped frame 761 is sleeved outside one end of the square frame 75 where the sliding rod 76 is located, the opposite corners of the back-shaped frame 761 are chamfered into inclined surfaces, a baffle 762 is fixedly installed outside one section of the back-shaped frame 761 where the sliding rod 76 is located, a compression spring 763 is sleeved outside the sliding rod 76, and the compression spring 763 is fixedly installed between the inner wall of the back-shaped frame 761 and the baffle 762, when the sliding rod 76 slides back and forth, the compression spring 763 will be compressed by the baffle 762 due to the blocking of the sliding blocks 753 on both sides, and then the elastic potential energy will be accumulated, until the pushing force of the back-shaped frame 761 is greater than the elastic force of the return spring 752, at this time, the back-shaped frame 761 will extrude the sliding block 753 to slide into the side frame 751, so that the compressed compression spring 763 will release the elastic potential energy instantaneously, the impact force of the impact head 77 is increased, the oscillation intensity of the cutter head is improved, and the oscillation cleaning effect of the mud cake is improved.

[0038] Please refer to Figures 8-10The mixing and pulverizing component 9 includes a fixed cylinder 91 fixedly installed inside the end of a fixed plate, and the fixed cylinder 91 is in the shape of an "I". A rotating cylinder 92 is rotatably connected inside the fixed cylinder 91. A second gear 93 is fixedly installed on the top of the rotating cylinder 92. The second gear 93 is engaged with the gear ring 5 on the other side. A plug rod 94 is slidably inserted inside the rotating cylinder 92. An upper blade holder 95 is fixedly installed on the bottom of the rotating cylinder 92. An upper triangular blade 96 is fixedly arranged on the outer side of the upper blade holder 95. A plug rod 94 is fixedly installed at the bottom end of the plug rod 94. The lower cutter head 97 has a fixed array of lower triangular cutters 98 on its outer side. When the cutter head rotates to dig, it will drive the mixing and crushing component 9 to rotate as a whole. This will cause the second gear 93 to rotate along the outer teeth of the gear ring 5. Therefore, it will drive the upper cutter head 95 to rotate synchronously through the rotating drum 92. It will rotate on its own axis while revolving around the central axis, which can further mix and crush the slag and debris in the soil cavity, avoiding large pieces of slag from blocking the discharge port and preventing the slag from solidifying and making it inconvenient for the screw conveyor to carry out the slag.

[0039] Please see Figures 8-10 Both sides of the rotating drum 92 are provided with limit grooves 921. The top of the second gear 93 is rotatably connected to a guide post 931, and the guide post 931 is rotatably connected to the track 8. The top two sides of the insertion rod 94 are symmetrically fixed with limit posts 941, and the limit posts 941 are slidably connected in the limit grooves 921 on both sides. The limit posts 941 in the limit grooves 921 will restrict the insertion rod 94, so that the insertion rod 94 can only slide up and down. This will cause the lower cutter seat 97 at the bottom of the insertion rod 94 to rotate synchronously with the rotating drum 92, thereby further mixing and crushing the slag and debris.

[0040] Please see Figures 8-10 The inner wall of the fixed cylinder 91 is provided with a track groove 911, which is wavy and connected end to end. The distance between the highest and lowest points of the track groove 911 is equal to the distance between the upper cutter holder 95 and the lower cutter holder 97. Friction protrusions are fixedly installed on the opposite side of the upper cutter holder 95 and the lower cutter holder 97, and the limiting post 941 is slidably connected in the track groove 911. When the insert rod 94 is rotated, it will drive the limiting post 941 to slide along the track groove 911, which will cause the insert rod 94 to move up and down along the track groove 911. This will cause the lower cutter holder 97 to move up and down and approach the upper cutter holder 95, thereby further squeezing and crushing the debris that enters between the upper cutter holder 95 and the lower cutter holder 97, improving efficiency.

[0041] Working principle: Please refer to Figures 1-10, first by the main drive 4 drive cutter body 2 rotation for excavation operations, and in the cutter body 2 rotation will drive the first gear 62 along the outer side of the gear teeth roll, in turn will drive the crank 63 rotation, so will make the rotating column 64 with the crank 63 rotation when extruding the inner wall of the chute 67, in turn will push the shuttle plate 66 to the shaft 65 to swing back and forth, so will drive the scraper 68 back and forth to clean the surface of the cutter cake, while by injecting high pressure water into the water storage chamber 691, will make the high pressure water along the arc-shaped groove 692 from the nozzle 693 to the outside of the cutter for washing, and because the high pressure water along the trajectory of the arc-shaped groove 692 impact, will make the rotating shell 69 rotation, in turn will be on the surface of the cutter after scraping mud cake for all-round washing;

[0042] At the same time, when the shuttle plate 66 swing back and forth will drive the fan gear 71 through the shaft 65 synchronous swing, in turn will drive the rack plate 73 along the inner wall of the slide rail 72 back and forth, again through the connecting rod 74 will drive the impact head 77 both ends of the slide rod 76 to impact the cutter inner wall, while the slide rod 76 back and forth, because the slider 753 to the back type frame 761 block, will make the baffle 762 to the compression spring 763 compression, until the back type frame 761 to the slider 753 of the thrust greater than the reset spring 752 elastic force, the slider 753 will be extruded into the side frame 751 inside, and the back type frame 761 will be compressed under the elastic potential of the compression spring 763 instant forward impact, in turn will improve the impact of the impact head 77, further improve the intensity of the shock, so that the mud cake in the cutter surface off, then through the water outlet hole 3 to spray high pressure water, that is, the mud cake attached to the surface of the cutter can be washed off;

[0043] Wherein, the cutter will also drive the second gear 93 along the other side of the gear teeth roll, in turn will drive the rotating drum 92 in the fixed cylinder 91 rotation, so will drive the upper tool seat 95 synchronous rotation, in turn will be through the upper three-pronged knife 96 on the outer side of the upper tool seat 95 in revolution while rotating to the residue in the soil cavity for stirring and crushing treatment, at the same time, because the limiting column 941 in the limiting groove 921 limit the plug rod 94 can only slide up and down, in turn will make the lower tool seat 97 follow the upper tool seat 95 synchronous rotation, so will be through the lower three-pronged knife 98 to further improve the stirring and crushing effect;

[0044] And in the plug rod 94 rotation, its top limiting column 941 will move along the trajectory of the trajectory slot 911, in turn will make the plug rod 94 in the rotating drum 92 inside up and down movement, so will drive the lower tool seat 97 up and down to approach the upper tool seat 95, in turn will be extruded to the rock-soil debris between the upper tool seat 95 and the lower tool seat 97 during stirring for crushing treatment, so as to improve the crushing effect again.

[0045] In summary, the shield machine cutterhead mud cake cleaning device, through the cutterhead in the rotating excavation will drive the first gear 62 along the outer side of the gear ring 5 of the catch roll, in turn will drive the rotating column 64 rotation and extrusion of the inner wall of the chute 67, so that the shuttle plate 66 with the shaft 65 as the shaft back and forth swing, in turn will drive the scraper 68 back and forth to clean the mud cake sticking on the surface of the cutterhead, at the same time, through the high pressure water drive rotating shell 69, will further wash the surface of the cutterhead, so that the shield machine can be cleaned synchronously when working, avoid long-term accumulation of mud cake, and avoid manual cleaning under pressure into the warehouse, reduce the security risk;

[0046] Through the shaft 65 will drive the fan gear 71 back and forth, so as to drive the rack plate 73 along the slide rail 72 back and forth, in turn will drive the slide rod 76 through the connecting rod 74 back and forth, so that the two ends of the impact head 77 will hit the inner wall of the cutterhead, and the mud cake sticking on the surface of the cutterhead will be knocked off, at the same time, through the baffle 762 compression compression spring 763 will accumulate elastic potential energy, after the sliding block 753 is extruded and slides into the side frame 751, the compressed compression spring 763 will release the elastic potential energy instantaneously, increase the impact force of the impact head 77, so as to improve the shock strength of the cutterhead and improve the shock cleaning effect of the mud cake;

[0047] When the second gear 93 rolls along the other side of the gear ring 5 of the catch, it will drive the rotating drum 92 to rotate, and since the insertion rod 94 is limited by the limiting column 941, the insertion rod 94 will rotate synchronously with the rotating drum 92, in turn, the upper knife seat 95 and the lower knife seat 97 will rotate while revolving, so as to drive the upper three-pronged knife 96 and the lower three-pronged knife 98 to stir and crush the residual earth and debris in the soil cavity, at the same time, since the limiting column 941 slides along the track of the track groove 911, the insertion rod 94 will slide up and down when rotating, so as to drive the lower knife seat 97 to approach the upper knife seat 95 back and forth, in turn, the rock-soil debris can be crushed by extrusion, so as to further improve the crushing effect of the rock-soil debris, and facilitate the discharge of the residual earth and debris.

[0048] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shield tunneling machine cutterhead mud cake cleaning device, comprising a shield tunneling machine housing (1) and a cutterhead body (2), wherein water outlet holes (3) are provided on the spoke surface of the cutterhead body (2), a main drive (4) is fixedly installed inside the shield tunneling machine housing (1), the output end of the main drive (4) is fixedly installed at the center of the back of the cutterhead body (2), and the cutterhead body (2) is rotatably installed at the front end of the shield tunneling machine housing (1) by the main drive (4), characterized in that: The inner wall of the shield machine shell (1) is fixedly installed with a gear ring (5), both sides of the gear ring (5) are fixedly installed with clamping teeth, the back of the cutter body (2) is fixedly installed with four groups of fixed plates, and a scraping and flushing part (6) is arranged between every two groups of fixed plates, the inside of the cutter body (2) corresponding to the scraping and flushing part (6) is provided with an oscillation cleaning part (7), and the inner wall of the shield machine shell (1) and close to the gear ring (5) is fixedly installed with a track (8), the fixed plate is provided with a stirring and crushing part (9) corresponding to the track (8); The scraping and flushing part (6) comprises a support (61) fixedly installed between the adjacent two groups of fixed plates, a first gear (62) rotatably connected to the middle part of the support (61), a crank (63) fixedly installed on the side, away from the support (61), of the first gear (62), a rotating column (64) rotatably connected to the end of the crank (63), a shaft rod (65) rotatably connected to the back of the cutter body (2), a shuttle-shaped plate (66) fixedly installed at the end of the shaft rod (65), a sliding groove (67) formed in one end of the shuttle-shaped plate (66) close to the crank (63), and the rotating column (64) inserted into the inside of the sliding groove (67), and scraping plates (68) fixedly installed on the two sides of the shuttle-shaped plate (66). The support (61) is arc-shaped, the first gear (62) is in meshing connection with the clamping teeth outside the gear ring (5), the rotating column (64) is in sliding connection in the inside of the sliding groove (67), and the shuttle-shaped plate (66) is in abutment against the back of the cutter body (2), and the included angle between the shuttle-shaped plate (66) and the cutter body (2) is an acute angle.

2. The shield machine cutterhead cake cleaning device of claim 1, wherein: The rotating shell (69) is rotatably connected between the scraping plates (68) and outside the shaft rod (65), the inside center of the rotating shell (69) is provided with a water storage chamber (691), the inside of the water storage chamber (691) is communicated with a high-pressure water pipe, four arc-shaped grooves (692) are arrayed at the eccentric position of the rotating shell (69), one end of each arc-shaped groove (692) penetrates into the water storage chamber (691), and the other end penetrates out of the outer wall of the rotating shell (69), and a spray head (693) is inserted into one end of each arc-shaped groove (692) penetrating through the outer wall of the rotating shell (69).

3. The shield machine cutterhead cake cleaning device of claim 1, wherein: The oscillation cleaning part (7) comprises a fan gear (71) and a sliding rail (72) rotatably connected in the inside of the cutter body (2), the fan gear (71) and the shaft rod (65) are fixedly installed, the inside of the sliding rail (72) is slidably connected with a rack plate (73), the rack plate (73) is in meshing connection with the fan gear (71), a connecting rod (74) is fixedly installed on the side, away from the fan gear (71), of the rack plate (73), square frames (75) are fixedly installed on both sides of the connecting rod (74) in the inside of the cutter body (2), a sliding rod (76) is slidably connected through the inside of each square frame (75), the top end of the connecting rod (74) is fixedly installed in the middle part of the sliding rod (76), and impact heads (77) are fixedly installed at both ends of the sliding rod (76).

4. The earthmover cutterhead cake cleaning device of claim 3, wherein: Side frames (751) are fixedly installed on both sides of the middle part of the square frame (75), and the side frames (751) are connected to the inside of the square frame (75). A return spring (752) is fixedly installed inside the side frame (751). A slider (753) is fixedly installed at the end of the return spring (752), and the slider (753) is slidably connected inside the side frame (751). A spiral frame (761) is sleeved on the outer side of one end of the square frame (75). The diagonal corner of the spiral frame (761) is beveled. A baffle (762) is fixedly installed on the outer side of a section of the spiral frame (761) of the spiral frame (761). A compression spring (763) is sleeved on the outer side of the spiral frame (763), and the compression spring (763) is fixedly installed between the inner wall of the spiral frame (761) and the baffle (762).

5. The shield machine cutterhead mud cake cleaning device of claim 1, wherein: The mixing and pulverizing component (9) includes a fixed cylinder (91) fixedly installed inside the end of a fixed plate, and the fixed cylinder (91) is in the shape of an "I". A rotating cylinder (92) is rotatably connected inside the fixed cylinder (91). A second gear (93) is fixedly installed on the top of the rotating cylinder (92). The second gear (93) and the gear ring (5) are meshed on the other side. A plug rod (94) is slidably inserted inside the rotating cylinder (92). An upper blade holder (95) is fixedly installed at the bottom of the rotating cylinder (92). An upper triangular blade (96) is fixedly installed in an array on the outer side of the upper blade holder (95). A lower blade holder (97) is fixedly installed at the bottom end of the plug rod (94). A lower triangular blade (98) is fixedly installed in an array on the outer side of the lower blade holder (97).

6. The shield machine cutterhead mud cake cleaning device of claim 5, wherein: Both sides of the rotating drum (92) are provided with limiting grooves (921). The top of the second gear (93) is rotatably connected to a guide post (931), and the guide post (931) is rotatably connected in the track (8). The top two sides of the insert rod (94) are symmetrically fixed with limiting posts (941), and the limiting posts (941) are slidably connected in the limiting grooves (921) on both sides respectively.

7. The shield machine cutterhead mud cake cleaning device of claim 5, wherein: The inner wall of the fixed cylinder (91) is provided with a track groove (911), and the track groove (911) is wavy and connected end to end. The distance between the highest and lowest points of the track groove (911) is equal to the distance between the upper tool holder (95) and the lower tool holder (97). Friction protrusions are fixedly installed on the opposite side of the upper tool holder (95) and the lower tool holder (97), and the limiting post (941) is slidably connected in the track groove (911).

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