CN218580435U

CN218580435U - Concrete road surface shallow layer mills plane tool bit

Info

Publication number: CN218580435U
Application number: CN202222971846.2U
Authority: CN
Inventors: 姚费
Original assignee: Xuzhou Angtuo Machinery Technology Co ltd
Current assignee: Xuzhou Angtuo Machinery Technology Co ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-03-07
Anticipated expiration: 2032-11-08

Abstract

The utility model belongs to the technical field of milling machine equipment, in particular to a concrete pavement shallow milling cutter head, which comprises an alloy body, a cutter bar body, a gasket and a clamp spring, wherein the alloy body is arranged at the end part of the cutter bar body; the alloy body is connected with the cutter arbor body in a non-wrapping mode. The utility model removes the part of the cutter bar body wrapped around the alloy body, so that the slender alloy body is completely leaked, the cutter bar body is prevented from contacting the road surface, and the resistance and the vibration generated when the cutter head mills the plane are greatly reduced; the alloy body is added with a plurality of functional ribs, so that the integral shearing resistance and rigidity of the alloy body are improved, and the impact resistance of the alloy body is improved; meanwhile, the integral rotation capacity of the cutter head is improved, the circumference of the cutter head is uniformly abraded, the service efficiency of the cutter head is improved, and the service life of the cutter head is prolonged.

Description

Concrete road surface shallow layer mills plane tool bit

Technical Field

The utility model belongs to the technical field of milling machine equipment, specifically be a concrete road surface shallow layer mills plane tool bit.

Background

The road milling machine is used as a main device for road maintenance, and can mill and crush damaged asphalt pavement, cement pavement and various roadbeds by high-speed rotation of the milling rotor, so as to achieve the effect of removing damaged pavement.

The cutter head is arranged on a milling rotor rotating at a high speed, and the alloy body at the top end of the cutter head impacts and crushes the pavement material to achieve the purpose of removing. A plurality of cutter heads are arranged on the milling rotor according to a certain rule, and finally, cutting marks which are uniformly distributed and have the same interval are formed on the road surface. The milled pavement is flat, and the space between the cutting marks is uniform and fine, so that the milled pavement is favorable for filling and covering new materials.

The tool bit cuts into different depths of the road surface, and materials with different thicknesses on the road surface can be removed. The method is simply divided into a deep milling mode and a shallow milling mode, wherein the milling mode with the depth exceeding 3 centimeters is regarded as the deep milling mode, and the road surface with deep damage can be removed; milling with a depth of no more than 3 cm is considered shallow milling, the main function of which is to remove the damaged surface layer of the pavement.

As shown in fig. 1, in order to ensure the performance requirements of the cutter head, the structure of the conventional concrete milling cutter head comprises an alloy body 1, a cutter bar body 2 and the like. The alloy body 1 is used for milling the road surface, and the cutter bar body 2 is a carrier of the alloy body 1 and is used for being installed with a milling wheel. When milling the alloy body 1, wear occurs, and it is necessary to have a sufficient volume to cope with the wear, thereby extending the entire life of the cutter head. Meanwhile, the alloy body 1 needs to have a relatively slender and pointed tip shape to ensure its cutting force. The above-described profile alone cannot withstand the impact force and abrasion caused by cutting because the alloy body 1 is very brittle due to its hard nature. Therefore, the main body of the alloy body 1 needs to be wrapped in the steel material of the cutter bar body 2, and only the conical tip is exposed to cut the road surface. Meanwhile, the abrasion of the cutter rod body is protected to a certain extent and gradually abraded along with the abrasion consumption of the cutter rod body.

As shown in fig. 2, in such a conventional concrete milling cutter for deep milling of a concrete pavement 5, when a certain depth is reached, the upper half of the cutter including the alloy body 1 and a part or all of the cutter head cut into the pavement 5 and participate in milling and cutting the pavement 5 as the equipment advances and the milling rotor rotates at a high speed. In which the alloy body 1 cuts the road surface 5 with its own hardness.

Comparing deep milling with shallow milling, the depth of the cutting head into the road surface 5 and the reaction and wear of the material of the road surface 5 on the cutting head are very different.

As shown in fig. 3, when the conventional concrete milling cutter head is directly used for milling a shallow layer of a road surface 5, the alloy body 1 and the cutter bar body 2 wrapped therearound contact the road surface 5 and perform cutting milling due to the above-described structure. The part of the cutter bar body 2 contacting the road surface 5 is very thick and blunt, and forms friction and impact with the road surface 5, so that larger reaction force is generated. The horizontal direction acting force is converted into driving resistance, the vertical direction acting force is converted into periodic upward impact force to cause equipment vibration, and long-term vibration damage is brought to equipment parts.

In the current industry, the conventional concrete milling cutter head has mature design concept and optimized development for deep milling of a concrete pavement. In contrast, when the conventional concrete milling cutter head mills a shallow layer of a concrete pavement, the cutter head and the pavement generate a large reaction force, and the milling equipment is damaged by vibration.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned conventional concrete and milling the planer head and produce great reaction force when the concrete pavement shallow layer is milled and is milled, to milling the problem that equipment caused vibrations and harm, the utility model provides a concrete pavement shallow layer mills the planer head, it is through optimizing alloy body structure and with cutter arbor body connected mode for under the shallow layer is milled and is milled the operating mode, the point portion of the alloy body cuts into the road surface and cuts and mill, the tool bit main part is not contact with the road surface more than the road surface, the reaction force greatly reduced that the tool bit received.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the concrete pavement shallow milling cutter head comprises an alloy body, a cutter bar body, a gasket and a clamp spring, wherein the alloy body is arranged at the end part of the cutter bar body, the clamp spring is sleeved on the cutter bar body, and the gasket is sleeved on the clamp spring; the alloy body is connected with the cutter bar body in a non-wrapping mode.

Furthermore, the alloy body comprises a conical tip part, a slender columnar middle part, functional ribs uniformly distributed along the circumferential direction of the columnar middle part, and a welding disc; the conical tip portion, the slender columnar middle portion and the welding disc are connected in sequence, and the functional ribs are connected between the slender columnar middle portion and the welding disc.

Further, the welding disc is welded at the end part of the cutter bar body in a non-wrapping mode.

Furthermore, the included angle of the conical surface of the conical tip part is 110-130 degrees.

Furthermore, the functional ribs are triangular sheets.

Furthermore, the triangular bevel edge of the triangular flaky functional rib is in a concave arc shape.

Further, the cutter bar body comprises a welding pool, a conical head, a cutter unloading groove, a retainer ring disc, a clamp spring positioning table, an assembling rod and a clamp spring fixing groove, and the welding pool is arranged at the conical head; the conical head part is connected with the retainer ring disc, and an annular cutter discharge groove is formed at the connection part; the retainer ring disc is connected with the assembling rod through the clamp spring positioning table; and the assembly rod is provided with an annular clamp spring fixing groove.

Further, the alloy body is welded on the welding pool in a non-wrapping mode.

Further, the gasket is of a circular ring sheet type.

Furthermore, the jump ring is equipped with bump in spacing for having the long cover of elastic thin slice, and vertically is equipped with the seam that runs through.

The utility model removes the part of the cutter bar body wrapped around the alloy body, so that the slender alloy body is completely leaked, the cutter bar body is prevented from contacting the road surface, and the resistance and the vibration generated when the cutter head mills the plane are greatly reduced; the alloy body is added with a plurality of functional ribs, so that the integral shearing resistance and rigidity of the alloy body are improved, and the impact resistance of the alloy body is improved; meanwhile, the integral rotation capacity of the cutter head is improved, the circumference of the cutter head is uniformly abraded, the service efficiency of the cutter head is improved, and the service life of the cutter head is prolonged.

Drawings

FIG. 1: a schematic view of an existing conventional concrete milling cutter head;

FIG. 2: a conventional concrete milling cutter head is used for deep milling;

FIG. 3: a shallow milling schematic diagram of an existing conventional concrete milling cutter head;

FIG. 4: the concrete pavement shallow milling cutter head schematic diagram of the utility model;

FIG. 5: the utility model discloses an alloy body schematic diagram of a concrete pavement shallow milling cutter head;

FIG. 6: the utility model discloses a cutter bar body schematic diagram of a concrete pavement shallow milling cutter head;

FIG. 7: the utility model discloses a gasket schematic diagram of a concrete pavement shallow milling cutter head;

FIG. 8: the cross-sectional view of the clamp spring of the milling cutter head for the shallow layer of the concrete pavement of the utility model is shown schematically;

FIG. 9: the clamp spring schematic diagram of the concrete pavement shallow milling cutter head of the utility model is shown;

FIG. 10: the connection schematic diagram of the milling cutter head gasket and the clamp spring of the concrete pavement shallow layer of the utility model is shown;

FIG. 11: the utility model discloses concrete road surface shallow layer mills the planer tool bit shallow layer and mills the plane sketch map.

Detailed Description

The present invention will be described in detail with reference to the following examples.

As shown in fig. 4, the utility model discloses a concrete road surface shallow layer mills plane tool bit, include: the cutter comprises an alloy body 1, a cutter bar body 2, a gasket 3 and a clamp spring 4.

As shown in figure 5, an alloy body 1 is formed by sintering tungsten alloy powder through a pressed film, and comprises a conical tip part 1-1, a slender columnar middle part 1-2, functional ribs 1-3 uniformly distributed along the circumferential direction of the columnar middle part 1-2 and welding discs 1-4. The conical tip part 1-1, the slender columnar middle part 1-2 and the welding disc 1-4 are sequentially connected, and the functional rib 1-3 is connected between the slender columnar middle part 1-2 and the welding disc 1-4.

The included angle of the self conical surface of the conical tip part 1-1 is generally set to be 110-130 degrees, so that the broken road surface can generate enough impact pressure, and the self conical tip part has self rigidity and strength, and avoids self fracture and breakage.

The elongated columnar middle part 1-2 is an alloy consumption section, and when the alloy body 1 is used for cutting and crushing a road surface, the alloy body simultaneously generates abrasion and consumption. The thin and long columnar middle part 1-2 is worn and consumed, when the specification volume and the weight are consumed, the alloy body 1 and the whole tool bit lose efficiency, and the service life is also finished. In the milling process, because the milling cutter has a certain inclination angle when cutting into the road surface, the end part of the milling cutter still keeps a certain taper included angle when the milling cutter is continuously worn and consumed, and the impact and cutting performance of the milling cutter is continued.

The functional ribs 1-3 are evenly distributed around the slender columnar middle part 1-2, and have two main functions:

firstly, the rigidity and the strength of the whole alloy body 1 are improved, and the reinforcing effect is realized on the hard and relatively fragile slender alloy body 1. Considering that the upper part of the alloy body 1 is in contact with the road surface and receives reaction force, the moment arm of the part far away from the stress point is prolonged, and larger shearing moment is generated. Therefore, the functional ribs 1-3 are triangular sheets, i.e. they are gradually thickened from the top to the bottom (the end is the top), and the cross section is triangular. Meanwhile, the appearance of narrow upper part and wide lower part is more beneficial to cutting into the road surface, and has the same property of puncturing as the vertebral body.

And secondly, the forced rotation function of the alloy body 1 and the cutter head is improved. When the fixed cutter head is designed and arranged, the cutter head cuts into the inclined angle of the road surface, and the existence of the inclined angle enables the cutter head to generate a rotating moment under the action of an acting force in the cutting process, so that the cutter head can integrally rotate. The rotation can make the tool bit present uniform abrasion in the circumferential direction in cutting abrasion and consumption, maintain the shape of the top cone and continue the cutting performance. Without rotation or rotation blockage, the alloy body 1 contacts the road surface at a fixed position, so that the alloy body 1 is eccentrically worn and does not have the shape of a cone. The setting of the functional ribs 1-3 increases the rotating torque generated by the alloy body 1 contacting the road surface and rubbing with peripheral waste materials, further improves the rotating power of the cutter head, enables the cutter head to rotate more smoothly, and further optimizes the cutting performance and prolongs the service life of the cutter head. The triangular bevel edge of the functional rib 1-3 can be abraded into a concave arc shape in the using process, so that the triangular bevel edge of the triangular flaky functional rib 1-3 is optimized into the concave arc shape, and tests show that the rotating torque can be further increased, and the rotation of the tool bit is facilitated.

As shown in fig. 6, the cutter bar body 2 comprises a welding pool 2-1, a conical head 2-2, a cutter unloading groove 2-3, a retainer ring disc 2-4, a clamp spring positioning table 2-5, an assembly rod 2-6 and a clamp spring fixing groove 2-7.

The welding pool 2-1 is a groove arranged on the head part 2-2 of the cone and is used for connecting the alloy body 1; the cone head part 2-2 is connected with the retainer ring disc 2-4, and an annular groove is arranged at the connection part to be used as a tool discharge groove 2-3; the retainer ring disc 2-4 is connected with the assembling rod 2-6 through a clamp spring positioning table 2-5, and an annular groove serving as a clamp spring fixing groove 2-7 is formed in the assembling rod 2-6.

As shown in fig. 7, the gasket 3 is of a circular ring type;

as shown in fig. 8 and 9, the clamp spring 4 is an elastic thin long sleeve, the lower part of the clamp spring is provided with a limiting inner convex point 4-1, and a penetrating slit 4-2 is longitudinally arranged, so that the clamp spring 4 can be compressed by external force to deform, the appearance diameter of the clamp spring is reduced, other parts can be conveniently inserted or sleeved, and after the sleeving is completed, the appearance diameter of the clamp spring can be increased by utilizing the elasticity of the clamp spring, so that the clamp spring is tightly pressed on the inner walls of the other parts.

As shown in FIGS. 10 and 11, the welding disk 1-4 of the alloy body 1 is placed in the welding pool 2-1 of the cutter bar body 2 and is firmly welded by brazing, and the two are integrated. The clamp spring 4 is sleeved on the assembly rods 2-6 of the cutter arbor body 2, and a gap is reserved between the clamp spring 4 and the assembly rods 2-6, so that the clamp spring 4 and the cutter arbor body 2 can rotate fully and freely. The clamp spring limiting inner convex points 4-1 are clamped in the clamp spring fixing grooves 2-7 of the cutter bar body 2, so that the clamp spring 4 cannot fall off from the cutter bar body 2 freely. The washer 3 is sleeved outside the clamp spring 4, the diameter of an inner hole of the washer 3 is slightly smaller than or equal to the outer diameter of the clamp spring 4, and on one hand, when the diameter of the clamp spring is reduced by external force, the washer 3 can be sleeved on the clamp spring 4; on the other hand, after the external force is removed, the clamp spring 4 elastically amplifies the external diameter of the clamp spring, and the washer 3 is ensured not to fall off from the clamp spring. Alloy body 1 and cutter arbor body 2 non-parcel formula link into an organic whole, make slender alloy body 1 leak outward completely, when carrying out the shallow layer and mill plane, avoided cutter arbor body 2 and road surface 5 contact, reduced resistance and the vibrations that produce when the tool bit is milled plane greatly.

The utility model discloses when carrying out the shallow layer and milling plane:

the diameter of the tool bit alloy body 1 can ensure enough strength and rigidity and cannot be easily broken. Meanwhile, due to the angle of the cutter head cutting into the road surface, the alloy body 1 is worn in a taper manner, so that a sharp appearance is formed all the time, and a groove with clear texture can be formed on the road surface all the time during cutting.

The tool bit alloy body 1 has enough strength and rigidity, the tool bit alloy body 1 does not need to be wrapped outside the tool bit body 2 to consolidate and reinforce the tool bit alloy body 1, and enough reinforcing effect can be provided only through the functional ribs 1-3, so that extra resistance and vibration caused by friction between the tool bit body 2 and a road surface during milling are avoided.

The functional ribs 1-3 enhance the rotating moment of the cutter head, so that the cutter head can integrally rotate, the alloy body 1 can be fully and uniformly worn, the tip of the conical surface is kept, the cutting function of the alloy body 1 is kept, and the service life of the cutter head is prolonged.

Claims

1. The concrete pavement shallow milling cutter head comprises an alloy body (1), a cutter arbor body (2), a gasket (3) and a clamp spring (4), wherein the alloy body (1) is arranged at the end part of the cutter arbor body (2), the clamp spring (4) is sleeved on the cutter arbor body (2), and the gasket (3) is sleeved on the clamp spring (4); the method is characterized in that: the alloy body (1) is connected with the cutter bar body (2) in a non-wrapping mode.

2. The concrete pavement shallow milling cutter head as claimed in claim 1, wherein: the alloy body (1) comprises a conical tip part (1-1), a slender columnar middle part (1-2), functional ribs (1-3) uniformly distributed along the circumferential direction of the columnar middle part (1-2), and a welding disc (1-4); the tapered tip part (1-1), the slender columnar middle part (1-2) and the welding disc (1-4) are sequentially connected, and the functional rib (1-3) is connected between the slender columnar middle part (1-2) and the welding disc (1-4).

3. The concrete pavement shallow milling cutter head as claimed in claim 2, wherein: the welding discs (1-4) are welded at the end part of the cutter bar body (2) in a non-wrapping mode.

4. The concrete pavement shallow milling cutter head as claimed in claim 2, wherein: the included angle of the conical surface of the conical tip part (1-1) is 110-130 degrees.

5. The concrete pavement shallow milling cutter head as claimed in claim 2, wherein: the functional ribs (1-3) adopt triangular plates.

6. The concrete pavement shallow milling cutter head as claimed in claim 5, wherein: the triangular bevel edge of the triangular sheet-shaped functional rib (1-3) is in a concave arc shape.

7. The concrete pavement shallow milling cutter head as claimed in claim 1, wherein: the cutter bar body (2) comprises a welding pool (2-1), a cone head (2-2), a cutter unloading groove (2-3), a check ring disc (2-4), a clamp spring positioning table (2-5), an assembling rod (2-6) and a clamp spring fixing groove (2-7), and the welding pool (2-1) is arranged at the cone head (2-2); the cone head (2-2) is connected with the retainer ring disc (2-4), and an annular cutter discharge groove (2-3) is formed in the connection position; the retainer ring disc (2-4) is connected with the assembling rod (2-6) through the clamp spring positioning table (2-5); and the assembly rod (2-6) is provided with an annular clamp spring fixing groove (2-7).

8. The concrete pavement shallow milling cutter head as claimed in claim 7, wherein: the alloy body (1) is welded on the welding pool (2-1) in a non-wrapping mode.

9. The concrete pavement shallow milling cutter head as claimed in claim 1, wherein: the gasket (3) is of a circular ring sheet type.

10. The concrete pavement shallow milling cutter head as claimed in claim 1, wherein: the clamp spring (4) is an elastic thin sheet long sleeve, is provided with a limiting inner salient point (4-1), and is longitudinally provided with a penetrating slit (4-2).