Novel cutter head for shield tunneling machine

Abstract

The utility model provides a novel cutterhead for a shield tunneling machine, which comprises a spoke type cutterhead and a cutter arranged on a cutterhead main body, and the aperture ratio of the cutterhead is 61%; six spokes are arranged on the cutterhead, and the spokes are in a radial shape and extend to an outer frame ring of the cutterhead from the outer edge of a hub of the cutterhead in the radial direction of the cutterhead; the cutter comprises a fishtail cutter, a cutting cutter, an advancing cutter, a peripheral gauge protection cutter, a peripheral protection cutter, a cutter ring protection cutter, an injection port protection cutter and a profiling cutter; due to the design that the opening ratio of the spoke type cutter head and the cutter head is 61%, the torque of the cutter head can be effectively reduced, meanwhile, the soil pressure change of an excavation face can be accurately reflected, the stability of the excavation face can be kept, and therefore disturbance of tunneling to surrounding soil is reduced. And the cutting tools are arranged on the two sides of the opening area, muck is promoted to flow through cutting force, and slag discharging blockage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield construction technical field especially is related to a new cutterhead for shield machine. BACKGROUND

[0002] With the extension of underground tunnel engineering to complex geological conditions (such as round gravel layer, gravel sand layer, medium coarse sand layer, sand pebble stratum, etc.), the cutterhead of the shield machine needs to meet the requirements of multiple dimensions such as tunneling efficiency, wear resistance and geological adaptability.

[0003] However, the operation performance of the traditional cutterhead in the complex geological environment such as round gravel layer, gravel sand layer, medium coarse sand layer, sand pebble stratum and the like has the following technical problems:

[0004] The cutter type and specification of the traditional cutterhead are single, only a single height cutter is configured, and the arrangement is fixed, which cannot adapt to different hardness and particle size strata, and the opening rate and cutter arrangement lack collaborative design. In addition, the cutter arrangement in the outer frame area is sparse, and lacks edge reinforcement design. Although the pebble particle size is not large, the wear of the surrounding gage protection cutter is serious, which can cause gage protection failure, and additional manual correction is required, increasing the construction cost and safety risk. In addition, the traditional cutterhead relies on manual periodic inspection of cutter wear, and cannot obtain wear data in real time, which has safety hazards.

[0005] Therefore, the utility model is proposed. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide a new cutterhead for shield machine. The preferred technical solutions in many technical solutions provided by the utility model can produce many technical effects, which are described in detail below.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a novel cutter head for shield machine, including spoke's cutter head and the cutter of setting on the cutter head main part, the opening rate of cutter head is 61%, be provided with six spoke on the cutter head, the spoke is radial and from the outer edge of the cutter head hub along the radial direction of cutter head extends to the outer frame ring of cutter head, the cutter includes fish tail sword, cutting sword, leading sword, peripheral path protection sword, peripheral protection sword, cutter ring protection sword, injection port protection sword and profiling cutter, the fish tail sword sets up on the cutter hub of cutter head, and is three pronged type design, the cutting sword and the leading sword are misaligned and set up on the spoke, and all along the radial direction of cutter head is sequentially arranged, the peripheral path protection sword is set up in the area of the outer frame ring between adjacent two spokes, and along the circumferential direction of cutter head is sequentially arranged, the peripheral protection sword is set up on the outer frame ring, and is located the circumferential direction both sides of the peripheral path protection sword, the cutter ring protection sword is set up on the cutter ring of the most outside cutting sword, the injection port protection sword is set up on the spoke, the outer frame ring is provided with containing groove, and the profiling cutter is connected with containing groove through hydraulic cylinder.

[0009] Preferably, the fork of the fish tail sword is located between the adjacent two spokes and extends along the radial direction of the cutter head, five fish tail bodies are arranged on each fork, and the height of the fish tail body is 450 mm.

[0010] Preferably, the annular area formed between the hub and the outer frame ring is divided into 16 concentric cutting rings, the 16th ring to the 1st ring are arranged from outside to inside, three pairs of cutting swords are arranged on each ring, and the height of the cutting sword body is 110 mm.

[0011] Preferably, on the cutting trajectory of the 15th ring to the 10th ring outside, four leading swords are arranged on each ring, on the trajectory of the 9th ring to the 3rd ring, three leading swords are arranged on each ring, and on the trajectory of the 2nd ring to the 1st ring inside, two leading swords are arranged on each ring.

[0012] Preferably, the leading sword includes a leading sword a with a body height of 200 mm and a leading sword b with a body height of 160 mm.

[0013] Preferably, the number of peripheral path protection swords between the adjacent two spokes is two, the peripheral path protection sword includes a peripheral path protection sword a with a body height of 210 mm, a peripheral path protection sword b with a body height of 170 mm, and a peripheral path protection sword c with a body height of 130 mm.

[0014] Preferably, one injection port protection sword is arranged on the 14th ring, the 8th ring, the 6th ring, and the 3rd ring respectively, the injection port protection sword is a C-shaped structure, and a space for additive outflow is formed between the injection port protection sword and the spoke.

[0015] Preferably, the ultrasonic wear monitoring device is further included, the ultrasonic wear monitoring device comprises an ultrasonic monitor and an ultrasonic probe, the ultrasonic probe is arranged on the cutter and is close to the easily-worn part of the cutter; the ultrasonic monitor is arranged on the spoke and is used for receiving and processing signals transmitted by the ultrasonic probe.

[0016] The preferred technical scheme of the utility model can produce at least the following technical effects:

[0017] The utility model provides a new cutter head for shield machine, including spoke formula's cutter head and the cutter of setting on the cutter head main part, the opening rate of cutter head is 61%, be provided with six spokes on the cutter head, and the spoke is radial and from the outer edge of the cutter head hub extends to the outer frame ring on the radial of cutter head, the cutter includes fish tail sword, cutting tool, the first sword, the periphery keeps the sword, the periphery protection sword, the sword ring protection sword, the injection port protection sword and the profiling tool, fish tail sword sets up on the cutter hub, and it is three pronged type design, cutting tool and the first sword all set up on the spoke, and all along radial of cutter head arrangement, the periphery keeps the sword and sets up in the area between two adjacent spokes of the outer frame ring, and along the circumferential direction of cutter head arrangement, the periphery protection sword sets up on the outer frame ring, and is located the circumferential two sides of periphery keeps the sword, the sword ring protection sword sets up on the cutter ring of the most outside cutting tool, the injection port protection sword sets up on the spoke, is provided with containing groove on the outer frame ring, and the profiling tool is connected with containing groove through hydraulic cylinder.

[0018] Three pronged fish tail sword sets up on the center hub of cutter, utilizes three pronged structure dispersion impact force, so that it can cut in advance at any angle rotation, carries out preliminary broken to the front earth body, reduces the cutting resistance of subsequent cutter, improves the cutting and stirring effect of center position earth body, improves the cutting performance in complex geology.

[0019] The first sword cuts the earth before the cutting tool, cuts the earth into blocks, and creates good cutting conditions for the cutting tool. The cutting width of the first sword is narrower than that of the cutting tool, the cutting efficiency is higher, the flowability of the cutting earth is increased, the torque of the cutting tool is greatly reduced, the cutting efficiency of the cutting tool is improved, the wear of the cutting tool is reduced, and the cutting tool is suitable for medium coarse sand, gravel sand layer, round gravel layer and pile construction scene.

[0020] The cutting tool is arranged radially along the spoke and cooperates with the first sword. With the rotation of the cutter, the cutting tool cuts the earth into small pieces by using its sharp edge. The propulsion system of the shield machine provides the necessary propulsion force to enable the cutting tool to continuously apply pressure to the earth, achieving continuous cutting, and is suitable for loose body strata such as sand, pebbles, clay and the like with a particle size of less than 400mm.

[0021] The outer side of the cutter ring of the outermost cutting tool is provided with a cutter ring protection cutter for reducing the wear of the cutter ring by hard particles and prolonging the service life of the cutter head.

[0022] The peripheral gauge protection cutter is arranged circumferentially along the outer frame ring and is used for cutting the soil at the edge of the tunnel profile to provide the necessary excavation diameter for the shield machine and ensure that the shield machine can effectively cut the soil while maintaining the stability of the excavation face.

[0023] The peripheral gauge protection cutter is arranged circumferentially along the outer frame ring and is used for cutting the soil at the edge of the tunnel profile to provide the necessary excavation diameter for the shield machine and ensure that the shield machine can effectively cut the soil while maintaining the stability of the excavation face.

[0024] The injection port protection cutter is located above the injection port and is used to prevent the injection port from being blocked. The injection port is used to inject an appropriate amount of lubricating material such as bentonite slurry or foam into the cutting face and the soil chamber to improve the plasticity of the soil and reduce the wear of the cutting tool.

[0025] The profiling cutter is radially telescopic through a hydraulic oil cylinder and dynamically adjusts the overbreak range according to the tunnel curve radius and geological conditions.

[0026] The spoke type cutter head and the design of the opening rate of 61% of the cutter head can effectively reduce the cutter head torque, accurately reflect the change of the earth pressure of the excavation face, and be beneficial to maintaining the stability of the excavation face, thereby reducing the disturbance of the excavation to the surrounding soil. And the cutter arrangement is cooperatively designed, cutting tools are arranged on both sides of the opening area, and cutting force is used to promote the flow of the muck to avoid muck blockage. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0028] Figure 1 is a structural schematic view of a novel cutter head for a shield machine provided by the present application;

[0029] Figure 2 is a schematic view of the planar cutter arrangement of a novel cutter head for a shield machine provided by the present application;

[0030] Figure 3 is a structural schematic view of a peripheral gauge protection cutter of a novel cutter head for a shield machine provided by the present application;

[0031] Figure 4 is a structural schematic view of a leading cutter and an ultrasonic probe of a novel cutter head for a shield machine provided by the present application;

[0032] Figure 5 is a structure schematic view of an injection port protection cutter of a novel cutterhead for a shield tunneling machine provided by the utility model;

[0033] Figure 6 is a structure schematic view of a fish tail cutter of a novel cutterhead for a shield tunneling machine provided by the utility model.

[0034] In the drawing:

[0035] 1, cutterhead; 101, wheel hub; 102, outer frame ring; 103, opening area;

[0036] 201, spoke a; 202, spoke b; 203, spoke c; 204, spoke d; 205, spoke e; 206, spoke f;

[0037] 3, fish tail cutter; 301, fish tail cutter body;

[0038] 4, cutting cutter;

[0039] 5, leading cutter a; 6, leading cutter b;

[0040] 7, peripheral path protection cutter a; 8, peripheral path protection cutter b; 9, peripheral path protection cutter c;

[0041] 10, peripheral protection cutter;

[0042] 11, cutter ring protection cutter;

[0043] 12, injection port protection cutter;

[0044] 13, profiling cutter;

[0045] 14, injection pipe; 1401, injection port;

[0046] 15, ultrasonic probe;

[0047] 16, ultrasonic monitor. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of the utility model.

[0049] As Figures 1-6The utility model provides a new cutter head for shield machine, including spoke's cutter head 1 and the cutter of setting on the cutter head 1 main body, the opening rate of cutter head 1 is 61%, be provided with six spokes on cutter head 1, and the spoke is radiate and from the outer edge of the hub 101 of cutter head 1 along the radial direction of cutter head 1 extends to the outer frame ring 102 of cutter head 1, the cutter includes fish tail sword 3, cutting tool 4, the leading sword, the periphery keeps the sword, the periphery protection sword 10, the sword ring protection sword 11, the injection port protection sword 12 and the profiling sword 13, fish tail sword 3 sets up on the hub 101 of cutter head 1, and is three-pronged design, cutting tool 4 and the leading sword all set up on the spoke, and all along the radial direction of cutter head 1 sequentially set up, the periphery keeps the sword and sets up in the area between the adjacent two spokes of outer frame ring 102, and along the circumference of cutter head 1 sequentially sets up, the periphery protection sword 10 sets up on the outer frame ring 102, and is located the circumferential two sides of the periphery keeps the sword, the sword ring protection sword 11 sets up on the sword ring of the most outer cutting tool 4, the injection port protection sword 12 sets up on the spoke, the outer wall surface of outer frame ring 102 is provided with the accommodating groove, and the profiling sword 13 is connected with the accommodating groove through the hydraulic cylinder.

[0050] Three-pronged fish tail sword 3 sets up on the central hub 101 of cutter head 1, utilizes three-pronged structure to disperse impact force, so that it can cut and advance in any angle rotation, carries out preliminary crushing to the front soil body, reduces the cutting resistance of subsequent cutter, improves the cutting performance in complex geology.

[0051] The leading sword cuts the soil body before cutting tool 4 cuts the soil body, cuts and divides the soil body, creates good cutting conditions for cutting tool 4.The cutting width of the leading sword is narrower than the cutting width of cutting tool 4, the cutting efficiency is higher, the fluidity of the cutting soil body is increased, the torque of cutting tool 4 is greatly reduced, the cutting efficiency of cutting tool 4 is improved, and the wear of cutting tool 4 is reduced.The alloy size of the selected reinforced leading sword is larger, which can cope with medium-coarse sand, gravel sand layer and round gravel layer, and can also complete the pile grinding construction.

[0052] Cutting tool 4 is provided on both sides of the spoke along the radial direction of the spoke.With the rotation of cutter head 1, the soil body is cut into small pieces by using the sharp edge. The propulsion system of the shield machine provides the necessary propulsion force, so that the cutting tool 4 can continuously apply pressure to the soil body to realize continuous cutting, which is suitable for loose body strata such as sand, pebble, clay and the like with a particle size of less than 400mm.

[0053] The sword ring protection sword 11 is arranged on the outside of the sword ring of the outermost cutting tool 4, which is used to reduce the wear of the sword ring by hard particles and prolong the service life of the sword ring.

[0054] The periphery keeps the sword is arranged along the circumference of the outer frame ring 102, which is used to cut the soil body of the tunnel contour edge, provide the necessary excavation diameter for the shield machine, and ensure that the shield machine can effectively cut the soil body while maintaining the stability of the excavation face.

[0055] The peripheral protection cutter 10 is arranged on both sides of the peripheral gauge cutter in the circumferential direction, and is used for protecting the peripheral gauge cutter.

[0056] The injection port protection cutter 12 is arranged above the injection port 1401, and is used for preventing the injection port 1401 from being blocked. The injection port 1401 is used for improving the plasticity of the soil by adding a proper amount of lubricating material such as bentonite mud and foam to the cutting surface and the soil bin, and reducing the wear of the cutter caused by cutting the soil.

[0057] The profiling cutter 13 is radially telescopic through a hydraulic oil cylinder, and dynamically adjusts the overbreak range according to the tunnel curve radius and the geological conditions.

[0058] The opening rate of the cutter head 1 refers to the proportion of the opening area of the cutter head 1 to the total area of the cutter head 1.

[0059] The opening area 103 of the cutter head 1 is a hollow area formed between the spokes, the outer frame ring 102 and the hub 101, and the opening rate is 61%, which expands the deslagging channel area while ensuring the structural strength of the cutter head 1, and is cooperatively designed with the cutter arrangement, and the cutting tools 4 are arranged on both sides of the opening area 103 to promote the flow of the deslag by using the cutting force, thereby avoiding the deslagging blockage. In addition, the large opening rate allows the hard particles such as pebbles and gravels with large particle sizes to directly pass through the cutter head 1, reduces the direct collision between the cutters and the hard particles, reduces the impact wear of the cutters, prolongs the service life of the cutters, and reduces the maintenance cost.

[0060] Further, the cutter head 1 is made of high-strength composite steel plate.

[0061] As an optional implementation, the prongs of the fishtail cutter 3 are located between the adjacent two spokes and extend in the radial direction of the cutter head 1, and five fishtail cutter bodies 301 are arranged on each prong, and the height of the fishtail cutter body 301 is 450mm.

[0062] Further, the included angle between the prongs is 120°, so that stable cutting is realized when the cutter head 1 rotates.

[0063] The prongs are located in the gaps between the adjacent spokes to avoid structural interference with the spokes, and meanwhile, the three-prong symmetrical layout is realized by using the space between the spokes, so that the fishtail cutter 3 uniformly disperses the cutting impact force within 360°.

[0064] Five fishtail cutter bodies 301 are arranged on each prong to form a high-density cutting array, so that the cutting ability can be maintained even if a single fishtail cutter body 301 fails.

[0065] The spokes include spoke a 201, spoke b 202, spoke c 203, spoke d 204, spoke e 205 and spoke f 206 arranged in sequence along the circumference.

[0066] The annular region formed between the hub 101 and the outer ring 102 is divided into 16 concentric cutting rings, with the 16th ring to the 1st ring arranged in sequence from the outside to the inside.

[0067] As an optional embodiment, 3 pairs of cutting tools 4 are arranged on each ring, and the tool body height of the cutting tools 4 is 110mm

[0068] Further, the cutting tools 4 on adjacent two spokes are arranged in a staggered manner. The cutting tools 4 are arranged on both sides of the spokes.

[0069] The arrangement of the cutting tools 4 is matched with the 61% open area of the cutter head 1, and the cuttings can quickly pass through the open area 103 between adjacent spokes into the soil bin.

[0070] The cutter guard 11 is arranged on the cutter ring of the cutting tool 4 installed at the intersection position of the spoke a 201, the spoke c 203 and the spoke e 205 and the 16th ring.

[0071] As an optional embodiment, 4 leading tools are arranged on each ring on the cutting trajectory of the 15th ring to the 10th ring; 3 leading tools are arranged on each ring on the trajectory of the 9th ring to the 3rd ring; and 2 leading tools are arranged on each ring on the trajectory of the 2nd ring to the 1st ring.

[0072] The leading tools include leading tool a 5 with a tool body height of 200mm and leading tool b 6 with a tool body height of 160mm, and the leading tool a 5 and the leading tool b 6 on the same ring are arranged alternately. The adjacent two leading tools on the same spoke can be of the same height or different heights.

[0073] The alternate arrangement of the leading tools of different heights can reduce the risk of failure of a single type of tool. The arrangement modes of the leading tool a 5 and the leading tool b 6 of different spokes can be different.

[0074] As an optional embodiment, the number of peripheral path protection tools between adjacent two spokes is two, and the peripheral path protection tools include peripheral path protection tool a 7 with a tool body height of 210mm, peripheral path protection tool b 8 with a tool body height of 170mm and peripheral path protection tool c 9 with a tool body height of 130mm.

[0075] Further, any two of the peripheral path protection tool a 7 with a tool body height of 210mm, the peripheral path protection tool b 8 with a tool body height of 170mm and the peripheral path protection tool c 9 with a tool body height of 130mm are arranged as a group on the outer ring 102 between adjacent two spokes.

[0076] The peripheral gage corner cutter b8 and the peripheral gage corner cutter c9 are located between the spoke a201 and the spoke b202.

[0077] The peripheral gage corner cutter a7 and the peripheral gage corner cutter b8 are located between the spoke b202 and the spoke c203.

[0078] The peripheral gage corner cutter c9 and the peripheral gage corner cutter a7 are located between the spoke c203 and the spoke d204.

[0079] The peripheral gage corner cutter b8 and the peripheral gage corner cutter c9 are located between the spoke d204 and the spoke e205.

[0080] The peripheral gage corner cutter a7 and the peripheral gage corner cutter b8 are located between the spoke e205 and the spoke f206.

[0081] The peripheral gage corner cutter c9 and the peripheral gage corner cutter a7 are located between the spoke f206 and the spoke a201.

[0082] The different height peripheral gage corner cutters are alternately arranged to reduce the risk of failure of a single type of cutter.

[0083] As an optional embodiment, the injection port protection cutter 12 is arranged at the intersection of the spoke b202 and the 14th ring, the spoke e205 and the 8th ring, the spoke f206 and the 6th ring, and the spoke e205 and the 3rd ring, respectively. The injection port protection cutter 12 has a C-shaped structure and forms a space for the additive to flow out between the injection port protection cutter 12 and the spoke.

[0084] Further, the spoke b202, the spoke e205 and the spoke f206 are provided with a slot for installing the liquid injection pipe, and the injection port 1401 of the liquid injection pipe extends above the spoke b202, the spoke e205 and the spoke f206.

[0085] The injection port protection cutter 12 and the spoke b202, the spoke e205 and the spoke f206 have a gap to form a space for the additive to flow out.

[0086] As an optional embodiment, the number of the profiled cutter 13 is two, and the profiled cutters 13 are arranged oppositely.

[0087] The specific connection structure of the profiled cutter 13, the hydraulic cylinder and the outer ring 102 is a prior art, and will not be described in detail here.

[0088] As an optional embodiment, the ultrasonic wear monitoring device is further included, and the ultrasonic wear monitoring device includes an ultrasonic monitor 16 and an ultrasonic probe 15. The ultrasonic probe 15 is arranged on the cutter and close to the easily-worn part of the cutter. The ultrasonic monitor 16 is arranged on the spoke and used for receiving and processing the signal transmitted by the ultrasonic probe 15.

[0089] Further, the ultrasonic probe 15 is embedded in the cutter, and the ultrasonic probe 15 is used for emitting ultrasonic signals and receiving reflected signals, and the signals contain information of the cutter wear state.

[0090] In order to more intuitively evaluate the cutter wear degree, as shown in the figure, Figure 4 The present application takes the wear thickness H of the profile cutter 13 alloy height (the alloy height of the new cutter) as the wear basis, and establishes the corresponding relationship between the cutter wear data and the profile cutter 13 alloy height wear thickness H. When the profile cutter 13 alloy height wear thickness corresponding to the cutter wear data reaches 0.6-0.8H, it is determined that the wear state is serious. At this time, the ultrasonic monitor 16 will feed back the wear degree information to the control system of the shield tunneling machine, and the control system triggers the stop command to stop the cutting operation, so as to replace the cutter, thereby ensuring the safe and stable operation of the shield tunneling machine.

[0091] The cutter wear grading determination table is as follows:

[0092]

[0093] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0094] In the description of the present application, it should be explained that, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the directions or position relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0095] In the description of the present application, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0096] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "one example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0097] The above merely describes specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A new type of cutter head for a shield tunneling machine, characterized in that, The application relates to a disc cutter comprising a disc body and tools arranged on the disc body, wherein the disc cutter has an opening ratio of 61%; six spokes are arranged on the disc body and extend radially from the outer edge of the hub to the outer frame of the disc; the tools comprise fishtail tools, cutting tools, leading tools, peripheral path protection tools, peripheral protection tools, ring protection tools, injection port protection tools and profiling tools; the fishtail tools are arranged on the hub of the disc body and have a three-pronged design; the cutting tools and the leading tools are arranged on the spokes in a staggered manner and are arranged in sequence along the radial direction of the disc; the peripheral path protection tools are arranged on the outer frame between two adjacent spokes and are arranged in sequence along the circumferential direction of the disc; the peripheral protection tools are arranged on the outer frame and are located on the circumferential sides of the peripheral path protection tools; the ring protection tools are arranged on the outer side of the ring of the outermost cutting tool; the injection port protection tools are arranged on the spokes; the outer frame is provided with accommodating grooves, and the profiling tools are connected with the accommodating grooves through hydraulic cylinders.

2. A new type of cutter head for a tunneling machine according to claim 1, characterized in that, The prongs of the fishtail tools are located between two adjacent spokes and extend along the radial direction of the disc; five fishtail tool bodies are arranged on each prong, and the height of the fishtail tool bodies is 450 mm.

3. A new type of cutter head for a tunneling machine according to claim 1, characterized in that, The annular area formed between the hub and the outer frame is divided into 16 concentric cutting rings, and the 16th ring to the first ring are arranged in sequence from the outside to the inside; three pairs of cutting tools are arranged on each ring, and the height of the cutting tool bodies is 110 mm.

4. The new type cutter head of a shield tunneling machine according to claim 1, characterized in that, Four leading tools are arranged on each of the cutting tracks of the 15th ring to the 10th ring; three leading tools are arranged on each of the cutting tracks of the 9th ring to the 3rd ring; and two leading tools are arranged on each of the cutting tracks of the 2nd ring to the 1st ring.

5. The new type cutter head of a shield tunneling machine according to claim 4, characterized in that, The leading tools comprise leading tool a with a tool body height of 200 mm and leading tool b with a tool body height of 160 mm.

6. A new type of cutter head for a tunneling machine according to claim 1, characterized in that, The number of peripheral path protection tools between two adjacent spokes is two, and the peripheral path protection tools comprise peripheral path protection tool a with a tool body height of 210 mm, peripheral path protection tool b with a tool body height of 170 mm and peripheral path protection tool c with a tool body height of 130 mm.

7. The new type cutter head of a shield tunneling machine according to claim 1, characterized in that, One injection port protection tool is arranged on the 14th ring, the 8th ring, the 6th ring and the 3rd ring respectively, the injection port protection tool has a C-shaped structure, and a space for additive outflow is formed between the injection port protection tool and the spokes.

8. A new type of cutter head for a tunneling machine according to claim 1, characterized in that, The application further relates to an ultrasonic wear monitoring device, which comprises an ultrasonic monitor and an ultrasonic probe; the ultrasonic probe is arranged on the tool and is close to the easily-worn part of the tool; and the ultrasonic monitor is arranged on the spoke and is used for receiving and processing signals transmitted by the ultrasonic probe.

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