An auxiliary mechanism for reducing clay adhesion to a shield cutter head

Abstract

The application belongs to the technical field of shield cutterhead, and particularly relates to an auxiliary mechanism for reducing clay of a shield cutterhead, which comprises a cutterhead body, a cutter seat fixedly connected to the surface of the cutterhead body, a plurality of cutter seats arranged in a circumferential array on the outer surface of the cutterhead body, an installation groove formed in the outer surface of each cutter seat, and a cutter plate installed in the installation groove in the interior of each cutter seat. Since the first conical blocks and the second conical blocks are arranged in one-to-one correspondence, the first conical blocks at different positions move between the second conical blocks, so that some spoil adhered to the outer surface of the cutter plate is extruded into a broken block shape under the interaction and extrusion of the first conical blocks and the second conical blocks and gradually falls along the surface of the cutter seat, thereby reducing the problem that the cutter surface is wrapped with more mud for a long time and affects the use of the cutter, improving the cutting capacity of the cutterhead, and facilitating the excavation of the excavation surface.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of shield cutterhead, in particular to an auxiliary mechanism for reducing clay of shield cutterhead. BACKGROUND

[0002] The shield machine is an engineering instrument for tunneling, mainly composed of a shield cutterhead, a front shield and a rear shield. During tunneling, the shield machine advances along the tunnel axis while the shield cutterhead excavates the tunnel soil.

[0003] The shield cutterhead is a disc-shaped planar structure. During the process of excavating the soil and gravel layer by the cutterhead driven by the shield machine advancing system, the cutterhead and the cutters on the cutterhead cut the gravel.

[0004] When the shield cutterhead excavates in the stratum, the soil is rich in clay minerals, has small particle size and high viscosity. The cuttings cut by the cutters are retained between the cutterhead and the shield excavation surface due to the small opening rate of the cutterhead and other reasons, and form a thick and hard mud cake through the extrusion action of the cutterhead, which wraps the cutters and greatly reduces the cutting ability of the cutterhead, affecting the tunneling speed.

[0005] Therefore, the present application provides an auxiliary mechanism for reducing clay of shield cutterhead. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the auxiliary mechanism for reducing clay of a shield cutter head, comprising a cutter head body; a tool seat is fixedly connected to the surface of the cutter head body; the number of the tool seat is multiple, and the tool seat is arranged in a circumferential array on the outer surface of the cutter head body; an installation groove is formed in the outer surface of each tool seat; a cutter plate is installed in the interior of each tool seat and in the installation groove; a plurality of first tapered blocks are fixedly connected to the outer surface of each cutter plate; the first tapered blocks are equidistantly arranged on the outer surface of the cutter plate; an installation plate is arranged in the interior of each installation groove and on the side surface of the cutter plate; a plurality of second tapered blocks are fixedly connected to the outer surface of the installation plate; the second tapered blocks are equidistantly arranged on the outer surface of the installation plate; the first tapered blocks and the second tapered blocks are one-to-one corresponding; when the shield cutter head is excavated in the stratum, because the soil is rich in clay minerals, the particle size is small, and the viscosity is large, the slag cut by the cutter is retained between the cutter head and the shield excavation face due to the small opening rate of the cutter head and many other reasons, and a thick and hard mud cake is formed by the extrusion of the cutter head, which wraps the cutter, greatly reduces the cutting capacity of the cutter head, and affects the excavation speed; when the present shield cutter head is used, when the shield machine drives the cutter head body to excavate along the excavation face, the cutter head body drives the tool seat to rotate and excavate the stratum; during the working process of the cutter plate on the surface of the tool seat, the cutter plate is subjected to a certain pressure of the slag in the stratum, the cutter plate shakes in the installation groove at a certain amplitude, and the cutter plate simultaneously drives the first tapered blocks on the surface thereof to move; because the first tapered blocks and the second tapered blocks are one-to-one corresponding, the first tapered blocks at different positions move between the second tapered blocks, so that some slag adhered to the outer surface of the cutter plate is extruded into a broken block shape under the mutual extrusion of the first tapered blocks and the second tapered blocks, and gradually falls along the surface of the tool seat, thereby reducing the problem that the cutter surface is wrapped with a large amount of mud for a long time and affecting the use of the cutter, improving the cutting capacity of the cutter head, and facilitating the excavation of the excavation face.

[0008] Preferably, the installation plate is slidingly connected in the interior of the installation groove; a limiting frame matched with the installation plate is fixedly connected to the surface of the installation groove; the limiting frame can limit the moving position of the installation plate, so that the installation plate slides in the installation groove; a cavity is formed in the interior of the installation plate; a gravity ball is arranged in the interior of the cavity; the diameter of the gravity ball is smaller than the width of the cavity; during the rotating process of the tool seat, the installation plate simultaneously rotates, the gravity ball in the interior of the cavity rolls along the inner wall thereof, the installation plate moves a certain distance in the interior of the installation groove under the influence of the rolling of the gravity ball, and the installation plate simultaneously drives the second tapered blocks on the surface thereof to move, the distance between the second tapered blocks and the first tapered blocks changes, the soil on the surface of the cutter plate can be further broken, the cutter plate is assisted, and the service life of the cutter plate is improved.

[0009] Preferably, the surface of the limiting frame is fixedly connected with an extrusion spring; one side of the extrusion spring away from the limiting frame is connected with the outer surface of the mounting plate; during operation, when the mounting plate is moved under the influence of the gravity ball, the mounting plate will press the extrusion spring on its side surface at the same time, so that the extrusion spring is in a pressure storage state; when the gravity ball moves in the other direction, the mounting plate moves in the opposite direction, the extrusion spring in the pressure storage state is no longer extruded and recovers, thereby driving the mounting plate to move at a faster speed, the mounting plate drives the second conical block on its surface to move faster, so that the second conical block hits the part of the soil on the surface of the blade, further crushing the soil or rock.

[0010] Preferably, a rotating shaft is arranged in the mounting slot and is adapted to the rotating rod; the outer surface of the mounting plate is fixedly connected with a columnar rod; the surface of the rotating rod is provided with a columnar groove; the columnar rod is slidingly connected in the columnar groove; the outer surface of the columnar groove is fixedly connected with a pressing rod adapted to the columnar rod; during operation, when the blade is used for a long time, the worker rotates the rotating rod to press the columnar rod on one side of the rotating rod, thereby driving the mounting plate to move, so that the mounting plate drives the second conical block to move away from the first conical block, the second conical block no longer limits the first conical block, then the worker can take out the blade from the mounting slot and replace the damaged blade, at the same time, under the interaction of the first conical block and the second conical block, the stability of the blade during excavation can be improved, and the service life of the blade can be improved.

[0011] Preferably, the surface of each blade seat and on both sides of the mounting slot is fixedly connected with an elastic seat; the upper surface of the elastic seat is rotatably connected with a telescopic rod; the top end of the telescopic rod is fixedly connected with a scraper; the width of the scraper is adapted to the width of the blade; the scraper is symmetrically arranged on the outer surface of the blade; during operation, when the blade seat excavates the soil layer, the scraper on the surface of the blade seat is affected by the soil layer, the scraper will rotate at a certain angle on the outer surface of the telescopic rod, during the rotation of the scraper, the scraper will contact with part of the soil on the outer surface of the blade, so that the scraper scrapes the soil, and the blade can automatically scrape the soil during excavation of the soil layer, which is convenient for subsequent use of the blade.

[0012] Preferably, the elastic seat is internally fixedly connected with a tension spring; the bottom end of the telescopic rod is in contact with the side surface of the tension spring; the inside of the elastic seat is provided with a groove matched with the telescopic rod; during operation, when the scraper is stressed, the telescopic rod on the surface of the scraper will be subjected to pressure, so that the telescopic rod will compress the tension spring on one side, and when the scraper is not stressed, the tension spring in the compressed state will recover, so that the telescopic rod and the scraper will swing again at a certain amplitude, so that the scraper further crushes and scrapes the slag, reduces the problem that the surface of the cutter plate will form a thick and hard mud cake for a long time, improves the cutting capacity of the cutter plate, and facilitates the excavation of the excavating surface by the cutter plate.

[0013] Preferably, the outer surface of the mounting plate and close to one side of the scraper is fixedly connected with a protruding block; the surface of the scraper and close to one side of the protruding block is fixedly connected with an arc-shaped rod; the shape of the arc-shaped rod close to one end of the protruding block is arc-shaped; during operation, when the mounting plate moves, the mounting plate simultaneously drives the protruding block to move, the protruding block will be in contact with and pressed against the arc-shaped rod during the movement process, and the arc-shaped rod will drive the scraper to move along the outer surface of the cutter plate, so that the removal of the slag on the surface of the cutter plate is facilitated.

[0014] Preferably, the outer surface of the scraper is rotatably connected with a crushing column; a plurality of crushing columns are arranged at equal distances on the outer surface of the scraper; the shape of the crushing column is conical; during operation, during the movement of the scraper, the crushing column on the surface of the scraper will crush the part of the slag on the surface of the cutter plate which is larger in size, so that the cleaning of the slag on the surface of the cutter plate is accelerated.

[0015] Preferably, the surface of the scraper is provided with a rotating column matched with the crushing column; the outer surface of the rotating column is fixedly connected with a connecting frame.

[0016] Preferably, the outer surface of each crushing column is fixedly connected with an agitating rod; the length of the agitating rod is less than the length of the crushing column; the agitating rod is arranged, so that the crushing of the blocky soil is further facilitated.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The auxiliary mechanism for reducing clay of a shield cutter head, by the cutter plate on the surface of the cutter seat during the working process, the cutter plate will be subjected to a certain pressure of the slag in the stratum, the cutter plate will sway in the installation groove within a certain amplitude, and the cutter plate will simultaneously drive the first conical blocks on the surface thereof to move, since the first conical blocks and the second conical blocks are arranged in one-to-one correspondence, the first conical blocks at different positions will move between the second conical blocks, so that some slag adhered to the outer surface of the cutter plate will be extruded into a broken block shape under the mutual extrusion of the first conical blocks and the second conical blocks, and gradually fall along the surface of the cutter seat, reducing the problem that the cutter surface is wrapped with more mud for a long time and affecting its own use, improving the cutting capacity of the cutter head, and facilitating the excavation of the excavation face.

[0019] 2. The auxiliary mechanism for reducing clay of a shield cutter head, by the installation plate moving under the influence of the gravity ball, the installation plate will simultaneously press the extrusion spring on the side surface thereof, so that the extrusion spring is in a pressure accumulation state, and when the gravity ball moves in the other direction, the installation plate moves in the opposite direction, the extrusion spring in the pressure accumulation state is no longer extruded and recovers, thereby driving the installation plate to move at a faster speed, the installation plate drives the second conical blocks on the surface thereof to move faster, so that the second conical blocks impact the slag on part of the surface of the cutter plate, further crushing the soil blocks or rocks. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described below with reference to the drawings.

[0021] Figure 1 is a perspective view of the cutter head body of the application;

[0022] Figure 2 is a perspective view of the cutter seat part of the application;

[0023] Figure 3 is a structural schematic view of the cutter plate part of the application;

[0024] Figure 4 is a structural schematic view of the installation plate part of the application;

[0025] Figure 5 is a structural schematic view of the limiting frame part of the application;

[0026] Figure 6 is a structural schematic view of the protrusion block part of the application;

[0027] Figure 7 is a structural schematic view of the elastic seat part of the application;

[0028] Figure 8 is a structural schematic view of the connecting frame part of the application;

[0029] Figure 9is a structural schematic view of the stirring rod of the second embodiment of the present application.

[0030] In the figure: 1, cutter disc body; 2, cutter seat; 3, cutter plate; 4, first conical block; 5, mounting plate; 51, limiting frame; 6, second conical block; 7, cavity; 8, gravity ball; 9, extrusion spring; 10, rotating rod; 11, columnar rod; 12, elastic seat; 13, telescopic rod; 14, scraper; 15, tension spring; 16, protruding block; 17, arc-shaped rod; 18, breaking column; 19, rotating column; 20, connecting frame; 21, stirring rod. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0032] Embodiment one

[0033] As Figures 1 to 4As shown, the auxiliary mechanism for reducing clay of a shield cutter head provided by the embodiment of the present application comprises a cutter head body 1; a cutter seat 2 is fixedly connected to the surface of the cutter head body 1; the cutter seats 2 are in a plurality and are arranged in a circumferential array on the outer surface of the cutter head body 1; an installation groove is formed in the outer surface of each cutter seat 2; a cutter plate 3 is installed in the installation groove and at the inner portion of each cutter seat 2; a plurality of first tapered blocks 4 are fixedly connected to the outer surface of each cutter plate 3; the first tapered blocks 4 are equidistantly arranged on the outer surface of the cutter plate 3; an installation plate 5 is arranged at the side surface of the cutter plate 3 and in the installation groove; a plurality of second tapered blocks 6 are fixedly connected to the outer surface of the installation plate 5; the second tapered blocks 6 are equidistantly arranged on the outer surface of the installation plate 5; the first tapered blocks 4 and the second tapered blocks 6 are arranged in one-to-one correspondence; when the shield cutter head is excavated in the stratum, because the soil is rich in clay minerals, has small particle size and large viscosity, and the slag soil cut by the cutter is retained between the cutter head and the shield excavation surface due to small cutter head opening rate and other reasons, thick and hard mud cakes are formed by the extrusion of the cutter head, the cutter is wrapped, the cutting ability of the cutter head is greatly reduced, and the excavation speed is affected; when the shield cutter head is used, when the shield machine drives the cutter head body 1 to excavate along the excavation surface, the cutter seat 2 is driven to rotate by the cutter head body 1 and excavates the stratum; during the working process of the cutter plate 3 on the surface of the cutter seat 2, the cutter plate 3 is subjected to a certain pressure of the slag soil in the stratum, the cutter plate 3 is shaken in the installation groove at a certain amplitude, and the cutter plate 3 simultaneously drives the first tapered blocks 4 on the surface thereof to move; because the first tapered blocks 4 and the second tapered blocks 6 are arranged in one-to-one correspondence, the first tapered blocks 4 at different positions move between the second tapered blocks 6, so that some slag soil adhered to the outer surface of the cutter plate 3 is extruded into a fragmented state under the mutual extrusion of the first tapered blocks 4 and the second tapered blocks 6, and gradually falls along the surface of the cutter seat 2, thereby reducing the problem that the cutter surface is wrapped with more mud for a long time and affecting the use thereof, improving the cutting ability of the cutter head, and facilitating the excavation of the excavation surface.

[0034] As Figures 4 to 5As shown, the mounting plate 5 is slidingly connected inside the mounting groove; the surface of the mounting groove is fixedly connected with a limiting frame 51 matched with the mounting plate 5; the limiting frame 51 can limit the moving position of the mounting plate 5, facilitating the sliding of the mounting plate 5 in the mounting groove; the inside of the mounting plate 5 is provided with a cavity 7; the inside of the cavity 7 is provided with a gravity ball 8; the diameter of the gravity ball 8 is smaller than the width of the cavity 7; during operation, the mounting plate 5 will rotate simultaneously during the rotation of the cutter holder 2, and the gravity ball 8 inside the cavity 7 will roll along the inner wall thereof, the mounting plate 5 will move a certain distance inside the mounting groove under the influence of the rolling of the gravity ball 8, and the mounting plate 5 will simultaneously drive the second conical block 6 on the surface thereof to move, the distance between the second conical block 6 and the first conical block 4 changes, which can further crush the soil on the surface of the cutter plate 3, assisting the cutter plate 3 and improving the service life of the cutter plate 3.

[0035] The surface of the limiting frame 51 is fixedly connected with an extrusion spring 9; the side, away from the limiting frame 51, of the extrusion spring 9 is connected with the outer surface of the mounting plate 5; during operation, when the mounting plate 5 moves under the influence of the gravity ball 8, the mounting plate 5 will simultaneously press the extrusion spring 9 on the side surface thereof, so that the extrusion spring 9 is in a pressure storage state, and when the gravity ball 8 moves in the other direction, the mounting plate 5 moves in the opposite direction, the extrusion spring 9 in the pressure storage state is no longer extruded and recovers, thereby driving the mounting plate 5 to move at a faster speed, the mounting plate 5 drives the second conical block 6 on the surface thereof to move faster, so that the second conical block 6 impacts the residual soil on part of the surface of the cutter plate 3, further crushing the soil or rock.

[0036] The mounting groove is rotationally connected with a rotating rod 10; the mounting groove is provided with a rotating shaft matched with the rotating rod 10; the outer surface of the mounting plate 5 is fixedly connected with a columnar rod 11; the surface of the rotating rod 10 is provided with a columnar groove; the columnar rod 11 is slidingly connected inside the columnar groove; the outer surface of the columnar groove is fixedly connected with a pressure rod matched with the columnar rod 11; during operation, when the cutter plate 3 on the surface of the cutter holder 2 is used for a long time, and the cutter plate 3 is replaced, the worker rotates the rotating rod 10, so that the rotating rod 10 presses the columnar rod 11 on one side thereof, thereby driving the mounting plate 5 to move, so that the mounting plate 5 drives the second conical block 6 to move away from the first conical block 4, the second conical block 6 no longer limits the first conical block 4, and then the worker can take out the cutter plate 3 from the mounting groove and replace the damaged cutter plate 3, and under the interaction of the first conical block 4 and the second conical block 6, the stability of the cutter plate 3 during excavation can be improved, and the service life of the cutter plate 3 can be improved.

[0037] As shown in the drawings, Figures 1 to 7As shown, the surface of each cutter seat 2 and located on both sides of the installation groove is fixedly connected with an elastic seat 12; the upper surface of the elastic seat 12 is rotatably connected with a telescopic rod 13; the top end of the telescopic rod 13 is fixedly connected with a scraper 14; the width of the scraper 14 is matched with the width of the cutter plate 3; the scraper 14 is symmetrically arranged on the outer surface of the cutter plate 3; during operation, when the cutter seat 2 excavates the soil layer, the scraper 14 on the surface of the cutter seat 2 is affected by the soil layer, and the scraper 14 rotates at a certain angle on the outer surface of the telescopic rod 13; during the rotation of the scraper 14, the scraper 14 is in contact with part of the slag on the outer surface of the cutter plate 3, so that the scraper 14 scrapes the slag, and the cutter plate 3 can automatically scrape the slag during the excavation of the soil layer, thereby facilitating the subsequent use of the cutter plate 3.

[0038] The inside of the elastic seat 12 is fixedly connected with a tension spring 15; the bottom end of the telescopic rod 13 is in contact with the side surface of the tension spring 15; the inside of the elastic seat 12 is provided with a groove matched with the telescopic rod 13; during operation, when the scraper 14 is stressed, the telescopic rod 13 on the surface of the scraper 14 is subjected to pressure, so that the telescopic rod 13 compresses the tension spring 15 on one side; when the scraper 14 is not stressed, the tension spring 15 in the compressed state recovers, so that the telescopic rod 13 and the scraper 14 are again swung at a certain amplitude, so that the scraper 14 further scrapes and breaks the slag, thereby reducing the problem that the surface of the cutter plate 3 is thick and hard mud cake after a long time, improving the cutting ability of the cutter head, and facilitating the excavation of the cutter head on the excavation surface.

[0039] The outer surface of the installation plate 5 and close to one side of the scraper 14 is fixedly connected with a protruding block 16; the surface of the scraper 14 and close to one side of the protruding block 16 is fixedly connected with an arc-shaped rod 17; the shape of one end of the arc-shaped rod 17 close to the protruding block 16 is arc-shaped; during operation, when the installation plate 5 moves, the installation plate 5 drives the protruding block 16 to move, the protruding block 16 is in contact with and presses against the arc-shaped rod 17 during the movement, and the arc-shaped rod 17 drives the scraper 14 to move along the outer surface of the cutter plate 3, thereby facilitating the removal of the slag on the surface of the cutter plate 3.

[0040] As shown in the figure, Figure 8 The outer surface of the scraper 14 is rotatably connected with a crushing column 18; a plurality of crushing columns 18 are arranged on the outer surface of the scraper 14 at equal distances; the shape of the crushing column 18 is conical; during operation, the crushing column 18 on the surface of the scraper 14 can crush the part of the slag on the surface of the cutter plate 3 which is large in size during the movement of the scraper 14, thereby accelerating the cleaning of the slag on the surface of the cutter plate 3.

[0041] The surface of the scraper 14 is provided with a rotating column 19 matched with the crushing column 18; the outer surface of the rotating column 19 is fixedly connected with a connecting frame 20; the length of the connecting frame 20 is less than the length of the scraper 14; during work, the rotating column 19 and the connecting frame 20 are arranged on the outer surface of the scraper 14, so that the crushing column 18 rotates at a certain angle on the outer surface of the rotating column 19, and then the crushing column 18 agitates left and right to shred the muck, destroys the shape of the muck, and then facilitates the removal of the blocky muck.

[0042] Example two

[0043] As Figure 9 shown, the comparative example one, wherein another embodiment of the application is: the outer surface of each of the crushing column 18 is fixedly connected with an agitating rod 21; the length of the agitating rod 21 is less than the length of the crushing column 18; the agitating rod 21 is arranged to further facilitate the crushing of the blocky soil.

[0044] During work, when the shield machine drives the cutter head body 1 to excavate along the excavation surface, the cutter head body 1 drives the cutter seat 2 to rotate and excavates the stratum, and in the working process of the cutter plate 3 on the surface of the cutter seat 2, the cutter plate 3 will be subjected to a certain pressure of the muck in the stratum, and will shake in the installation groove at a certain amplitude, and the cutter plate 3 will simultaneously drive the first tapered blocks 4 on its surface to move, since the first tapered blocks 4 and the second tapered blocks 6 are arranged in one-to-one correspondence, the first tapered blocks 4 at different positions will move between the second tapered blocks 6, so that under the mutual extrusion of the first tapered blocks 4 and the second tapered blocks 6, some muck adhered to the outer surface of the cutter plate 3 will be extruded into fragments, and gradually fall along the surface of the cutter seat 2, reducing the problem that the cutter surface is wrapped with more soil for a long time, affecting its own use, improving the cutting ability of the cutter head, and facilitating the excavation of the excavation surface; during the rotation of the cutter seat 2, the mounting plate 5 will also rotate, the gravity ball 8 in the cavity 7 will roll along the inner wall thereof, the mounting plate 5 will move a certain distance in the installation groove under the influence of the rolling of the gravity ball 8, and the mounting plate 5 will simultaneously drive the second tapered blocks 6 on its surface to move, the distance between the second tapered blocks 6 and the first tapered blocks 4 changes, which can further crush the soil on the surface of the cutter plate 3 and assist the cutter plate 3, improving the service life of the cutter plate 3.

[0045] When the mounting plate 5 is moved under the influence of the gravity ball 8, the mounting plate 5 will simultaneously press the extrusion spring 9 on the side surface thereof, so that the extrusion spring 9 is in a pressure storage state; when the gravity ball 8 moves in the other direction, the mounting plate 5 moves in the opposite direction, the extrusion spring 9 in the pressure storage state is no longer extruded and recovers, thereby driving the mounting plate 5 to move at a faster speed, the mounting plate 5 drives the second conical block 6 on the surface thereof to move faster, so that the second conical block 6 hits the part of the soil on the surface of the blade 3, and further crushes the soil or rock; when the blade 3 on the surface of the cutter seat 2 is used for a long time, when the blade 3 is replaced, the worker rotates the rotating rod 10, so that the rotating rod 10 presses the columnar rod 11 on the side thereof, thereby the columnar rod 11 drives the mounting plate 5 to move, so that the mounting plate 5 drives the second conical block 6 to move away from the first conical block 4, the second conical block 6 no longer limits the first conical block 4, then the worker can take out the blade 3 from the mounting groove, and replace the damaged blade 3, at the same time, under the interaction of the first conical block 4 and the second conical block 6, the stability of the blade 3 in the excavation process can be improved, and the service life of the blade 3 can be improved; when the cutter seat 2 excavates the soil layer, the scraper 14 on the surface of the cutter seat 2 is influenced by the soil layer, the scraper 14 rotates on the outer surface of the telescopic rod 13 at a certain angle, in the rotating process, the scraper 14 is in contact with part of the soil on the outer surface of the blade 3, so that the scraper 14 scrapes the soil, and the blade 3 can automatically scrape the soil during the excavation of the soil layer, which is convenient for the subsequent use of the blade 3.

[0046] When the scraper 14 is stressed, the telescopic rod 13 on the surface of the scraper 14 is stressed, so that the telescopic rod 13 compresses the stretching spring 15 on the side thereof, when the scraper 14 is not stressed, the stretching spring 15 in the compressed state recovers, so that the telescopic rod 13 and the scraper 14 are driven to swing at a certain amplitude again, so that the scraper 14 further crushes and scrapes the soil, which reduces the problem that the blade 3 forms a thick and hard mud cake on the surface thereof for a long time, improves the cutting ability of the cutter, and facilitates the excavation of the cutting face; when the mounting plate 5 moves, the mounting plate 5 simultaneously drives the protruding block 16 to move, the protruding block 16 moves in the process and is in contact with and presses the arc-shaped rod 17, the arc-shaped rod 17 drives the scraper 14 to move along the outer surface of the blade 3, so that the removal of the soil on the surface of the blade 3 is facilitated; in the moving process of the scraper 14, the crushing column 18 on the surface thereof crushes part of the large block-shaped soil on the surface of the blade 3, which can speed up the cleaning of the soil on the surface of the blade 3.

[0047] In the description of the application, it needs to be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the application.

[0048] It should also be noted that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An auxiliary mechanism for reducing clay adhesion to a shield cutterhead, comprising a cutterhead body (1); characterized in that: The surface of the cutter head body (1) is fixedly connected with cutter seats (2); the cutter seats (2) are in plurality and are arranged in a circumferential array on the outer surface of the cutter head body (1); the outer surface of each cutter seat (2) is provided with an installation groove; the inside of each cutter seat (2) and in the installation groove is provided with a cutter plate (3); the outer surface of each cutter plate (3) is fixedly connected with a plurality of first tapered blocks (4); the first tapered blocks (4) are equidistantly arranged on the outer surface of the cutter plate (3); the inside of each installation groove and on the side surface of the cutter plate (3) is provided with an installation plate (5); the outer surface of the installation plate (5) is fixedly connected with a plurality of second tapered blocks (6); the second tapered blocks (6) are equidistantly arranged on the outer surface of the installation plate (5); the first tapered blocks (4) and the second tapered blocks (6) are one-to-one corresponding arrangement; The installation plate (5) is slidingly connected in the inside of the installation groove; the surface of the installation groove is fixedly connected with a limiting frame (51) matched with the installation plate (5); the inside of the installation plate (5) is provided with a cavity (7); the inside of the cavity (7) is provided with a gravity ball (8); the diameter of the gravity ball (8) is smaller than the width of the cavity (7); The surface of the limiting frame (51) is fixedly connected with an extrusion spring (9); the side, away from the limiting frame (51), of the extrusion spring (9) is connected with the outer surface of the installation plate (5); The inside of the installation groove is rotatably connected with a rotating rod (10); the installation groove is provided with a rotating shaft matched with the rotating rod (10); the outer surface of the installation plate (5) is fixedly connected with a column-shaped rod (11); the surface of the rotating rod (10) is provided with a column-shaped groove; the column-shaped rod (11) is slidingly connected in the inside of the column-shaped groove; the outer surface of the column-shaped groove is fixedly connected with a pressing rod matched with the column-shaped rod (11).

2. The auxiliary mechanism for reducing clay adhesion to a shield cutter head according to claim 1, characterized in that: The surface of each cutter seat (2) and on both sides of the installation groove is fixedly connected with an elastic seat (12); the upper surface of the elastic seat (12) is rotatably connected with an extension rod (13); the top end of the extension rod (13) is fixedly connected with a scraper (14); the width of the scraper (14) is matched with the width of the cutter plate (3); the scraper (14) is symmetrically arranged on the outer surface of the cutter plate (3).

3. The auxiliary mechanism for reducing clay adhesion to a shield cutter head according to claim 2, characterized in that: The inside of the elastic seat (12) is fixedly connected with a tensile spring (15); the bottom end of the extension rod (13) is in contact with the side surface of the tensile spring (15); the inside of the elastic seat (12) is provided with a groove matched with the extension rod (13).

4. The auxiliary mechanism for reducing clay adhesion to a shield cutter head according to claim 3, characterized in that: The outer surface of the installation plate (5) and on the side close to the scraper (14) is fixedly connected with a protruding block (16); the surface of the scraper (14) and on the side close to the protruding block (16) is fixedly connected with an arc-shaped rod (17); the shape of the end of the arc-shaped rod (17) close to the protruding block (16) is arc-shaped.

5. The auxiliary mechanism for reducing clay adhesion to a shield cutter head according to claim 2, wherein: The outer surface of the scraper (14) is rotatably connected with a crushing column (18); the crushing column (18) is in plurality and is equidistantly arranged on the outer surface of the scraper (14); the shape of the crushing column (18) is tapered.

6. The auxiliary mechanism for reducing clay adhesion to a shield cutter head according to claim 5, wherein: The surface of the scraper (14) is provided with a rotating column (19) matched with the crushing column (18); the outer surface of the rotating column (19) is fixedly connected with a connecting frame (20); the length of the connecting frame (20) is less than the length of the scraper (14).

7. The auxiliary mechanism for reducing clay adhesion to a shield cutter head according to claim 6, characterized in that: The outer surface of each crushing column (18) is fixedly connected with an agitating rod (21); the length of the agitating rod (21) is less than the length of the crushing column (18).

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