A tooth seat, tooth head and tooth disc for road milling and grooving

Abstract

The purpose of the present invention is to provide a tooth seat, tooth head and toothed disc for road milling and grooving, comprising a tooth seat base, a wear-resistant layer is arranged on the side of the tooth seat base, and N main tooth mounting grooves are arranged on the tooth seat base at the upper end of the wear-resistant layer, wherein N ≥ 1, and the main tooth mounting grooves are arranged symmetrically in the transverse direction. 2N-1 auxiliary tooth mounting grooves are arranged on the top surface of the tooth seat base, and the auxiliary tooth mounting grooves are arranged along the axis of the main tooth mounting groove and the center line (12) between the axis of the adjacent main tooth mounting grooves. The design is simple, and milling and grooving operations can be performed on various complex road surfaces. It is wear-resistant, has good impact resistance, long service life and high construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a tooth seat, a tooth head and a tooth disc for road milling and grooving. Background Art

[0002] With the rapid development of infrastructure such as communications, electricity, transportation, water supply and power supply, construction operations have placed higher and higher requirements on engineering machinery and equipment. In the laying of underground pipelines, trenching and grooving are very critical construction steps. For special ground conditions, such as asphalt pavement, cement concrete ground, and complex rock formation ground, there are also higher requirements for grooving machines. The teeth of traditional grooving machines are made of ordinary steel or carbide, which are easy to wear or break. Replacing damaged parts is time-consuming and labor-intensive, which not only prolongs the construction period, reduces construction efficiency, but also increases construction costs. In addition, the general grooving tool holder has a large structure, a large and rough working surface, and a large amount of excavation leads to a large amount of backfill, which increases unnecessary time and labor consumption during backfilling.

[0003] The cutting tool mentioned in the prior art patent No. 200980154566.7 refers to a body formed of tungsten carbide and an element formed of a superhard material such as PCD or other materials with a specified Knoop hardness. However, such a cutting tool with PCD as a part on the end face of the cutting tool is not easy to produce and process, and it is difficult to form an actual product on the market. Currently, there is no actual application of such a tool on the market. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a tooth seat, tooth head and tooth disc for road milling and grooving, which has a simple design and can perform milling and grooving operations on various complex road surfaces, and has good wear resistance, impact resistance, long service life and high construction efficiency.

[0005] The object of the present invention is achieved in the following manner:

[0006] A tooth seat for road milling and grooving comprises a tooth seat base, a wear-resistant layer is arranged on the side of the tooth seat base, N main cutting tooth installation grooves are arranged on the tooth seat base above the wear-resistant layer, wherein N≥1, and the main cutting tooth installation grooves are arranged laterally symmetrically.

[0007] The top surface of the tooth seat base is provided with 2N-1 auxiliary tooth mounting grooves, and the auxiliary tooth mounting grooves are provided along the axis of the main tooth mounting groove and the center line (12) between the axes of adjacent main tooth mounting grooves.

[0008] The gear seat base is a hexahedron stretched in a rectangular plane, an octahedron stretched in a regular L-shaped plane, or an octahedron stretched in an inverted L-shaped plane.

[0009] A tooth head for road milling and grooving comprises a tooth seat, the tooth seat comprises a tooth seat base, a wear-resistant layer is arranged on the side of the tooth seat base, N main tooth mounting grooves are arranged on the tooth seat base at the upper end of the wear-resistant layer, wherein N≥1, the main tooth mounting grooves are arranged laterally symmetrically, main tooth polycrystalline diamond composite sheets are fixed in the main tooth mounting grooves, the main tooth polycrystalline diamond composite sheets extend out of the side of the tooth seat base or the main tooth polycrystalline diamond composite sheets extend out of both the side of the tooth seat base and the top surface of the tooth seat base.

[0010] The shapes of the composite layer of the polycrystalline diamond composite sheet of the main cutting teeth are: A. arc cone, B. truncated cone with symmetrical flattened sides, C. triangular cross-section with top chamfers, D. truncated cone, E. semi-truncated cone, F. hemispherical, G. hemispherical with curved surface, H. cylindrical with symmetrical flattened sides.

[0011] The top surface of the tooth seat base is provided with 2N-1 auxiliary tooth mounting grooves, which are arranged along the axis of the main tooth mounting groove and the center line between the axes of the adjacent main tooth mounting grooves, and the auxiliary tooth polycrystalline diamond composite sheets or cemented carbide teeth are fixed in the auxiliary tooth mounting grooves.

[0012] The shapes of the auxiliary cutter teeth polycrystalline diamond composite layer or cemented carbide tooth top are: A, circular arc cone, F, hemispherical, J, arc-shaped curved surface in cross section.

[0013] The gear seat base is a hexahedron stretched in a rectangular plane, an octahedron stretched in a regular L-shaped plane, or an octahedron stretched in an inverted L-shaped plane.

[0014] A toothed disc for road milling and grooving comprises a toothed disc base, a tooth seat base is fixed on the outer periphery of the toothed disc base, a wear-resistant layer is arranged on the side of the tooth seat base, N main cutting tooth mounting grooves are arranged on the tooth seat base at the upper end of the wear-resistant layer, wherein N≥1, the main cutting tooth mounting grooves are arranged symmetrically in the transverse direction, main cutting tooth polycrystalline diamond composite sheets are fixed in the main cutting tooth mounting grooves, the main cutting tooth polycrystalline diamond composite sheets extend out of the side of the tooth seat base or extend out of both the side of the tooth seat base and the top surface of the tooth seat base.

[0015] The top surface of the tooth seat base is provided with 2N-1 auxiliary tooth mounting grooves, the auxiliary tooth mounting grooves are provided along the axis of the main tooth mounting groove and the center line (12) between the axes of the adjacent main tooth mounting grooves, and the auxiliary tooth polycrystalline diamond composite sheets or cemented carbide teeth are fixed in the auxiliary tooth mounting grooves.

[0016] The gear seat base is a hexahedron stretched in a rectangular plane, an octahedron stretched in a regular L-shaped plane, or an octahedron stretched in an inverted L-shaped plane.

[0017] The diameter of the main cutting tooth installation groove is 4-25 mm, and the depth of the groove is 3-30 mm; the tooth seat base is welded to the tooth disc base through the installation surface or the tooth seat base is fixed to the tooth disc base by bolts.

[0018] Compared with the prior art, the present invention can achieve the following effects:

[0019] 1. The cutter teeth installed on the tooth seat of the present invention are polycrystalline diamond composite sheets made of superhard material. Polycrystalline diamond composite sheets are harder than typical traditional steel teeth and cemented carbide teeth, have good wear resistance, and have good flatness on the excavation surface, making the appearance after backfilling neat and beautiful, and have a long service life, which is 20 times longer than that of traditional cutter teeth.

[0020] 2. Due to the high hardness and strong impact resistance of polycrystalline diamond composite sheets, in the actual construction process, the mechanical speed of the toothed disc is higher than that of the traditional toothed disc, so the time for trenching and grooving is greatly reduced, which improves the construction efficiency.

[0021] 3. The tooth head of the present invention has a variety of different sizes to meet the excavation requirements of different widths and depths, avoiding unnecessary excavation and backfilling, saving time and cost, and at the same time reducing the impact on road traffic.

[0022] 4. The tooth head, tooth seat and toothed disc of the present invention have simple structures, are easy to install, disassemble and replace, and have a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The tooth seat structure of the present invention is schematically shown in FIG. Figure 1-1 .

[0024] Figure 2 The tooth seat structure of the present invention is schematically shown in FIG. Figure 1-2 .

[0025] Figure 3 The tooth seat structure of the present invention is schematically shown in FIG. Figure 2-1 .

[0026] Figure 4 The tooth seat structure of the present invention is schematically shown in FIG. Figure 2-2 .

[0027] Figure 5 The tooth seat structure of the present invention is schematically shown in FIG. Figure 3 .

[0028] Figure 6 The tooth seat structure of the present invention is schematically shown in FIG. Figure 4-1 .

[0029] Figure 7 The tooth seat structure of the present invention is schematically shown in FIG. Figure 4-1 Top view of the .

[0030] Figure 8 The tooth seat structure of the present invention is schematically shown in FIG. Figure 4-2 .

[0031] Fig. 9 The toothed disc structure of the present invention is shown in FIG. Figure 1 .

[0032] Fig.10 The toothed disc structure of the present invention is shown in FIG. Figure 2 .

[0033] Fig.11 It is a polycrystalline diamond compact composite layer type 1.

[0034] Fig.12 It is a polycrystalline diamond composite layer type 2.

[0035] Fig.13 It is a polycrystalline diamond compact composite layer type 3.

[0036] Fig.14 It is a polycrystalline diamond compact composite layer type 4.

[0037] Fig.15 It is a polycrystalline diamond compact composite layer type 5.

[0038] Fig.16 It is a polycrystalline diamond compact composite layer type 6.

[0039] Fig.17 It is a polycrystalline diamond compact composite layer type 7.

[0040] Fig.18 It is a polycrystalline diamond composite layer type 8.

[0041] Fig.19 It is a polycrystalline diamond compact composite layer type 9.

[0042] Among them, 1 is the tooth seat base; 2 is the wear-resistant layer; 3 is the main tooth mounting groove; 4 is the auxiliary tooth mounting groove; 5 is the main tooth polycrystalline diamond composite sheet; 6 is the auxiliary tooth polycrystalline diamond composite sheet; 7 is the tooth plate base; 8 is the mounting surface A; 9 is the mounting surface B; 10 is the mounting surface C, 11 is the axis; 12 is the center line; 13 is an arc cone; 14 is a truncated cone with symmetrical flattened sides; 15 is a triangle with a top chamfered cross section; 16 is a truncated cone; 17 is a semi-truncated cone; 18 is a hemisphere; 19 is a hemisphere with a curved surface; 20 is a cylinder with symmetrical flattened sides; 21 is an arc-shaped curved surface with a cross section. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] like Figure 1-8As shown, a tooth seat for road milling and grooving includes a tooth seat base 1, one end of the tooth seat base 1 is fixedly connected to the tooth disc, and the other end is installed with a polycrystalline diamond composite sheet. The polycrystalline diamond composite sheet is used as a milling and grooving tooth and rotates with the tooth disc under the power of the motor, first contacts the geological layer, and applies cutting force to the geological layer to perform cutting work. The side of the tooth seat base 1 is provided with a wear-resistant layer 2, and the wear-resistant layer is made of cemented carbide. When the tooth seat base 1 is ordinary steel, the cemented carbide has higher hardness and better wear resistance, which can prevent the tooth seat base 1 from being worn during the construction process, which not only ensures the overall wear resistance of the tooth seat, but also reduces the material cost. Of course, when the tooth seat base itself is cemented carbide, the strength and hardness are higher, and the wear resistance is better, but the price is also higher. N main cutter tooth mounting grooves 3 are arranged on the tooth seat base 1 at the upper end of the wear-resistant layer 2, and the main cutter tooth mounting grooves 3 are used to fix the polycrystalline diamond composite sheet, where N≥1, and the main cutter tooth mounting grooves 3 are arranged symmetrically in the transverse direction. The main tooth installation groove 3 is symmetrically arranged, which means that the main tooth installation groove 3 is symmetrically arranged on the side of the tooth seat base 1 with a symmetry plane perpendicular to the center line of the side. When there is only one main tooth installation groove 3, it is arranged in the middle of the top of the tooth seat base 1, and the central axis of the main tooth installation groove 3 is located in the symmetry plane; when there are two or more main tooth installation grooves, the main tooth installation grooves are arranged in a row at the top of the side of the tooth seat base, and are arranged in a symmetrical array with the symmetry plane, such as Figure 5-8 shown.

[0045] In addition, the main cutter tooth installation groove 1 can be a blind hole on the side of the tooth seat base 1, or a round hole groove with an opening on the top surface, such as Figure 1 or Figure 3 or Figure 6 As shown, or a semicircular hole slot with an opening on the top surface, such as Figure 5 As shown, after the main cutting tooth polycrystalline diamond compact 5 is installed in the circular hole groove of the top surface opening, the main cutting tooth polycrystalline diamond compact 5 protrudes at the opening portion of the top surface.

[0046] The top surface of the tooth seat base 1 is provided with 2N-1 auxiliary tooth mounting grooves 4, and the auxiliary tooth mounting grooves 4 are provided along the axis 11 of the main tooth mounting groove 3 and the center line 12 between the axes of the adjacent main tooth mounting grooves 3. The auxiliary tooth mounting grooves 4 are symmetrically provided, which means that the auxiliary tooth mounting grooves 4 are symmetrically provided on the top surface of the tooth seat base 1 with a symmetry plane perpendicular to the center line of the top surface. When there is one main tooth mounting groove, there is also one auxiliary tooth mounting groove; when there are two main tooth mounting grooves, at least three auxiliary tooth mounting grooves 4 are provided, such as Figure 1-4 As shown, among the three auxiliary tooth mounting grooves 4, the distance between the auxiliary tooth mounting grooves 4 on both sides and the main tooth mounting groove is greater than or equal to the distance between the auxiliary tooth mounting groove 4 in the middle and the main tooth mounting groove, and the distance between the auxiliary tooth mounting grooves 4 on both sides and the main tooth mounting groove is equal; that is, the arrangement of the three auxiliary tooth mounting grooves 4 on the top surface is equivalent to the three vertices of an isosceles triangle, as shown in FIG. Figure 3When the top surface area of ​​the tooth seat base 1 is small and the area for placing the auxiliary tooth mounting grooves 4 arranged in a triangle is insufficient, the three auxiliary tooth mounting grooves 4 can be arranged in a straight line, such as Figure 1 shown.

[0047] The gear base 1 is a hexahedron stretched by a rectangular plane, an octahedron stretched by a regular L-shaped plane, or an octahedron stretched by an inverted L-shaped plane. Stretching means extending the rectangular or L-shaped plane into a three-dimensional figure in a direction perpendicular to the rectangular or L-shaped plane.

[0048] A tooth head for road milling and grooving, comprising a tooth seat, the tooth seat comprising a tooth seat base 1, a wear-resistant layer 2 is arranged on the side of the tooth seat base 1, N main cutting tooth installation grooves 3 are arranged on the tooth seat base 1 at the upper end of the wear-resistant layer 2, wherein N ≥ 1, the main cutting tooth installation grooves 3 are arranged symmetrically in the transverse direction, and the main cutting tooth polycrystalline diamond composite sheet 5 is fixed in the main cutting tooth installation groove 3, and the main cutting tooth polycrystalline diamond composite sheet 5 extends out of the side of the tooth seat base 1 or the main cutting tooth polycrystalline diamond composite sheet 5 extends out of both the side of the tooth seat base 1 and the top surface of the tooth seat base 1. The thickness of the side of the polycrystalline diamond composite sheet 5 extending out of the tooth seat base is 1-8 mm, and the thickness of the part extending out of the top surface is 1-8 mm. The polycrystalline diamond composite sheet is fixed to the main cutting tooth installation groove by welding. Polycrystalline diamond is a superhard material, and has higher hardness, wear resistance and better thermal conductivity than cemented carbide. Therefore, the polycrystalline diamond composite sheet is used as a cutting tooth to make the tooth head more wear-resistant and have better comprehensive performance. The purpose of the polycrystalline diamond composite sheet 5 extending out of the tooth seat base 1 is to ensure that the polycrystalline diamond composite sheet is the first to contact the ground material and start cutting during construction, thereby reducing the direct wear of the wear-resistant layer and the tooth seat base by complex geology, reducing unnecessary wear, and extending the service life of the tooth head.

[0049] like Figure 11-18 As shown, the shapes of the composite layer of the main blade polycrystalline diamond composite sheet 5 are: A, arc cone 13, B, truncated cone 14 with symmetrical flattened sides, C, triangle 15 with top chamfered cross section, D, truncated cone 16, E, semi-truncated cone 17, F, hemispherical 18, G, hemispherical 19 with curved surface, H, cylindrical 20 with symmetrical flattened sides. The above are only several commonly used composite layers of the main blade polycrystalline diamond composite sheet 5, and the composite layer of the main blade polycrystalline diamond composite sheet 5 in the present invention is not limited to the above cases.

[0050] The top surface of the tooth seat base 1 is provided with 2N-1 auxiliary tooth installation grooves 4, which are arranged along the axis 11 of the main tooth installation groove 3 and the center line 12 between the axes of the adjacent main tooth installation grooves 3, and the auxiliary tooth polycrystalline diamond composite sheet 6 or cemented carbide tooth is fixed in the auxiliary tooth installation groove 4. The auxiliary tooth polycrystalline diamond composite sheet 6 or cemented carbide tooth is 1-8 mm higher than the top surface of the tooth seat base. The auxiliary blade teeth polycrystalline diamond composite sheet 6 or cemented carbide teeth are fixed to the auxiliary blade teeth mounting groove by welding, and the auxiliary blade teeth polycrystalline diamond composite sheet 6 or cemented carbide teeth in the auxiliary blade teeth mounting groove assist the polycrystalline diamond composite sheet to complete cutting, and the remaining road surface material not cut by the polycrystalline diamond composite sheet in the main blade teeth mounting groove is cut by the auxiliary blade teeth polycrystalline diamond composite sheet 6 or cemented carbide teeth at the same time, and the auxiliary blade teeth polycrystalline diamond composite sheet 6 or cemented carbide teeth are higher than the top surface of the tooth seat base 1, reducing the wear of the geological layer on the top surface, and the main blade teeth polycrystalline diamond composite sheet 5 and the auxiliary blade teeth polycrystalline diamond composite sheet 6 or cemented carbide teeth are laid on the tooth seat base in combination to ensure a neat cutting surface, facilitate backfilling, and save backfilling time.

[0051] like Fig.11 , Fig.16 , Fig.19 As shown, the shapes of the composite layer of the auxiliary tooth polycrystalline diamond composite sheet 6 or the top of the cemented carbide tooth are: A, circular arc cone 13, F, hemispherical 18, J, arc-shaped curved surface 21 in cross section.

[0052] The gear seat base 1 is a hexahedron stretched in a rectangular plane, an octahedron stretched in a regular L-shaped plane, or an octahedron stretched in an inverted L-shaped plane.

[0053] like Figure 9-10 As shown, a toothed disc for road milling and grooving comprises a toothed disc base 7, a tooth seat base 1 is fixed on the periphery of the toothed disc base 7, a wear-resistant layer 2 is arranged on the side of the tooth seat base 1, N main tooth mounting grooves 3 are arranged on the tooth seat base 1 at the upper end of the wear-resistant layer 2, wherein N ≥ 1, the main tooth mounting grooves 3 are arranged laterally symmetrically, main tooth polycrystalline diamond composite sheets 5 are fixed in the main tooth mounting grooves 3, the main tooth polycrystalline diamond composite sheets 5 extend out of the side of the tooth seat base 1 or the main tooth polycrystalline diamond composite sheets 5 extend out of both the side of the tooth seat base 1 and the top surface of the tooth seat base 1.

[0054] The top surface of the tooth seat base 1 is provided with 2N-1 auxiliary tooth mounting grooves 4, and the auxiliary tooth mounting grooves 4 are arranged along the axis 11 of the main tooth mounting groove 3 and the center line 12 between the axes of adjacent main tooth mounting grooves 3, and the auxiliary tooth polycrystalline diamond composite sheet 6 or cemented carbide tooth is fixed in the auxiliary tooth mounting groove 4.

[0055] The tooth seat base 1 is a hexahedron stretched by a rectangular plane, an octahedron stretched by a regular L-shaped plane, or an octahedron stretched by an inverted L-shaped plane. When the tooth seat base is in an "L" shape, there are three mounting surfaces on the tooth seat base, namely mounting surface A, mounting surface B, and mounting surface C. Mounting surface A and mounting surface B are perpendicular to each other, mounting surface A and mounting surface C are perpendicular to each other, and mounting surface A and mounting surface C are parallel to each other. The toothed disc base is circular, and the outer convex parts of the toothed disc base for mounting the toothed disc base are evenly distributed on the circumference of the toothed disc base for mounting and fixing the toothed disc base. The mounting end surface of the outer convex part of the toothed disc base is an inverted "L"-shaped groove, and the adjacent mounting surfaces are also perpendicular to each other, corresponding to the three mounting surfaces on the toothed disc base one by one. The end surface of the inverted "L"-shaped groove cooperates with the mounting end surface of the toothed disc base, and the toothed disc base and the corresponding mounting surfaces on the toothed disc base are welded together to fix the toothed disc base on the toothed disc base. The fact that mounting surface A, mounting surface B, and any adjacent mounting surfaces are perpendicular to each other is only a common situation of the present invention. Any two adjacent mounting surfaces among mounting surface A, mounting surface B, and mounting surface C can form angles of different angles, generally ranging from 35° to 150°, such as 45° angle, 60° angle, 120° angle, etc. This embodiment does not limit this and will not be listed one by one.

[0056] According to the different requirements of the size of excavation or grooving during actual operation, the size of the toothed disc base structure is also different. Along the radial direction of the toothed disc base: the width of the mounting surface B on the tooth seat base is 20-150mm, the width of the mounting surface C is 40-120mm, the height of the tooth seat base is 30-150mm, the thickness of the wear-resistant layer is 2-5mm, and the diameter of the tooth mounting groove is 8-20mm.

[0057] When the tooth seat base is in the shape of a rectangular block, there are two mounting surfaces on the tooth seat base, namely mounting surface A8 and mounting surface B9, and mounting surface A8 and mounting surface B9 are perpendicular to each other. The toothed disc base is circular, and the outer convex part of the toothed disc base is evenly distributed on the circumference of the toothed disc base for mounting the toothed disc base, which is used to install and fix the toothed disc base. The mounting surface of the outer convex part of the toothed disc base is a plane, and the two mounting surfaces are perpendicular to each other, corresponding to the two mounting surfaces on the toothed disc base one by one. The toothed disc base and the corresponding mounting surfaces on the toothed disc base are welded together to fix the toothed disc base on the toothed disc base. The mounting surface A and the mounting surface B are perpendicular to each other, which is only a common case of the present invention. When the toothed disc base is an irregular hexahedron as a whole, the mounting surface A and the mounting surface B can form different angles, generally ranging from 35° to 150°, such as 45° angle, 60° angle, 120° angle, etc., which are not limited in this embodiment and are not listed one by one.

[0058] According to the different requirements of the size of excavation or grooving during actual operation, the size of the toothed disc base structure is also different. Along the radial direction of the toothed disc base: the width of the mounting surface B on the tooth seat base is 20-150mm, the height of the tooth seat base is 30-150mm, the thickness of the wear-resistant layer is 2-5mm, and the diameter of the main cutter tooth mounting groove is 8-20mm.

[0059] The tooth head of the present invention has a variety of different sizes to meet the excavation requirements of different widths and depths, avoiding unnecessary excavation and backfilling, saving time and cost, and at the same time reducing the impact on road traffic.

[0060] The number of mounting surfaces on each gear seat base is not limited to three: mounting surface A, mounting surface B, and mounting surface C. There may be only one mounting surface, two mounting surfaces, or more mounting surfaces. The number of mounting surfaces is not limited. In addition, the mounting surface is not limited to a plane, but may also be a curved surface stretched from different types of curves.

[0061] The diameter of the main cutter tooth mounting groove 3 is 4-25mm, and the depth of the groove is 3-30mm; the tooth seat base 1 is welded to the toothed disc base 7 through the mounting surface or the tooth seat base 1 is fixed to the toothed disc base 7 by bolts. In the present invention, the materials of the tooth seat base 1 and the wear-resistant layer 2 can be different. The tooth seat base is made of steel that meets the product requirements, and the wear-resistant layer is made of cemented carbide; the material of the tooth seat base 1 and the wear-resistant layer 2 can also be the same material, both of which are steel or cemented carbide. The tooth seat base of the present invention generally uses ordinary steel, such as Q235 steel and 45 steel. On the premise of meeting the performance requirements of the equipment, it saves costs and reduces resource waste; the teeth installed on the tooth seat base are superhard material polycrystalline diamond composite sheets. Polycrystalline diamond composite sheets are harder than typical traditional steel teeth and cemented carbide teeth, have good wear resistance, and are 20 times longer in service life. Due to the high hardness and strong impact resistance of polycrystalline diamond composite sheets, in the actual construction process, the mechanical speed of the toothed disc is higher than that of the traditional toothed disc, so the time for trenching and grooving is greatly reduced, which improves the construction efficiency.

[0062] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A tooth adapter for road milling and grooving, comprising a tooth adapter base (1), characterized in that: A wear-resistant layer (2) is provided on the side of the tooth seat base (1), and N main cutter tooth mounting grooves (3) are provided on the tooth seat base (1) at the upper end of the wear-resistant layer (2), wherein N ≥ 1, and the main cutter tooth mounting grooves (3) are arranged symmetrically in the transverse direction; The top surface of the tooth seat base (1) is provided with 2N-1 auxiliary tooth mounting grooves (4), and the auxiliary tooth mounting grooves (4) are arranged along the axis (11) of the main tooth mounting groove (3) and the center line (12) between the axes of adjacent main tooth mounting grooves (3); Auxiliary blade tooth polycrystalline diamond composite sheet (6) or hard alloy tooth is fixed in the auxiliary blade tooth mounting groove (4); When there are two main blade tooth mounting grooves, at least three auxiliary blade tooth mounting grooves (4) are provided. Among the three auxiliary blade tooth mounting grooves (4), the distance between the auxiliary blade tooth mounting grooves (4) on both sides and the main blade tooth mounting groove is greater than or equal to the distance between the auxiliary blade tooth mounting groove (4) in the middle and the main blade tooth mounting groove, and the distance between the auxiliary blade tooth mounting grooves (4) on both sides and the main blade tooth mounting groove is equal; that is, the arrangement of the three auxiliary blade tooth mounting grooves (4) on the top surface is equivalent to the three vertices of an isosceles triangle; when the top surface area of ​​the tooth seat base (1) is small and the area for placing the auxiliary blade tooth mounting grooves (4) in a triangular arrangement is insufficient, the three auxiliary blade tooth mounting grooves (4) are arranged in a straight line.

2. The tooth adapter for road milling and grooving according to claim 1, characterized in that: The gear seat base (1) is a hexahedron stretched in a rectangular plane, an octahedron stretched in a regular L-shaped plane, or an octahedron stretched in an inverted L-shaped plane.

3. A tooth head for road milling and grooving, comprising a tooth seat, characterized in that: The tooth seat is a tooth seat for road milling and grooving according to claim 1, the tooth seat comprising a tooth seat base (1), a wear-resistant layer (2) is provided on the side of the tooth seat base (1), N main cutting tooth mounting grooves (3) are provided on the tooth seat base (1) at the upper end of the wear-resistant layer (2), wherein N ≥ 1, the main cutting tooth mounting grooves (3) are arranged symmetrically in the transverse direction, the main cutting tooth polycrystalline diamond composite sheet (5) is fixed in the main cutting tooth mounting groove (3), the main cutting tooth polycrystalline diamond composite sheet (5) extends out of the side of the tooth seat base (1) or the main cutting tooth polycrystalline diamond composite sheet (5) extends out of both the side of the tooth seat base (1) and the top surface of the tooth seat base (1).

4. The tooth head for road milling and grooving according to claim 3, characterized in that: The top of the main tooth polycrystalline diamond composite sheet (5) has the following shapes: A. arc cone (13), B. truncated cone (14) with symmetrical flattened sides, C. triangular cross-section with top chamfers (15), D. truncated cone (16), E. semi-truncated cone (17), F. hemispherical (18), G. hemispherical with a curved surface (19), and H. cylindrical (20) with symmetrical flattened sides.

5. The tooth head for road milling and grooving according to claim 4, characterized in that: The top surface of the tooth seat base (1) is provided with 2N-1 auxiliary cutter tooth mounting grooves (4), the auxiliary cutter tooth mounting grooves (4) being arranged along the axis (11) of the main cutter tooth mounting groove (3) and the center line (12) between the axes of adjacent main cutter tooth mounting grooves (3), and the auxiliary cutter tooth polycrystalline diamond composite sheets (6) or cemented carbide teeth are fixed in the auxiliary cutter tooth mounting grooves (4).

6. The tooth head for road milling and grooving according to claim 5, characterized in that: The shapes of the composite layer of the auxiliary tooth polycrystalline diamond composite sheet (6) or the top of the cemented carbide tooth are: A. arc cone (13), F. hemispherical (18), and J. arc curved surface (21) in cross section.

7. The tooth head for road milling and grooving according to any one of claims 3 to 6, characterized in that: The gear seat base (1) is a hexahedron stretched in a rectangular plane, an octahedron stretched in a regular L-shaped plane, or an octahedron stretched in an inverted L-shaped plane.

8. A toothed disc for road milling and grooving, comprising a toothed disc base (7), characterized in that: The outer periphery of the toothed disc base (7) is fixed According to claim 1, the tooth seat for road milling and grooving comprises a tooth seat base (1), a wear-resistant layer (2) is provided on the side of the tooth seat base (1), N main tooth mounting grooves (3) are provided on the tooth seat base (1) at the upper end of the wear-resistant layer (2), wherein N ≥ 1, the main tooth mounting grooves (3) are arranged symmetrically in the transverse direction, the main tooth polycrystalline diamond composite sheet (5) is fixed in the main tooth mounting groove (3), the main tooth polycrystalline diamond composite sheet (5) extends out of the side of the tooth seat base (1) or the main tooth polycrystalline diamond composite sheet (5) extends out of both the side of the tooth seat base (1) and the top surface of the tooth seat base (1).

9. The toothed disc for road milling and grooving according to claim 8, characterized in that: The top surface of the tooth seat base (1) is provided with 2N-1 auxiliary tooth mounting grooves (4), the auxiliary tooth mounting grooves (4) being arranged along the axis (11) of the main tooth mounting groove (3) and the center line (12) between the axes of adjacent main tooth mounting grooves (3), and the auxiliary tooth polycrystalline diamond composite sheets (6) or cemented carbide teeth are fixed in the auxiliary tooth mounting grooves (4).

10. The toothed disc for road milling and grooving according to claim 8 or 9, characterized in that: The gear seat base (1) is a hexahedron stretched in a rectangular plane, an octahedron stretched in a regular L-shaped plane, or an octahedron stretched in an inverted L-shaped plane.

11. The toothed disc for road milling and grooving according to claim 8, characterized in that: The main cutter tooth mounting groove (3) has a diameter of 4-25 mm and a groove depth of 3-30 mm; the tooth seat base (1) is welded to the tooth disc base (7) via a mounting surface or the tooth seat base (1) is fixed to the tooth disc base (7) by bolts.

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