CN114737456A - Milling rotor and milling machine - Google Patents
Milling rotor and milling machine Download PDFInfo
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- CN114737456A CN114737456A CN202210486395.5A CN202210486395A CN114737456A CN 114737456 A CN114737456 A CN 114737456A CN 202210486395 A CN202210486395 A CN 202210486395A CN 114737456 A CN114737456 A CN 114737456A
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- 238000003801 milling Methods 0.000 title claims abstract description 193
- 239000000463 material Substances 0.000 claims abstract description 82
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 230000001154 acute effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
- E01C23/088—Rotary tools, e.g. milling drums
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Crushing And Pulverization Processes (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to a milling rotor and a milling machine, wherein the milling rotor comprises a drum (10) and a plurality of first cutters (20), the drum (10) comprises a first drum section (11), the plurality of first cutters (20) are arranged on the outer surface of the first drum section (11), the plurality of first cutters (20) respectively form at least two spiral lines in opposite directions on two sides of a first cross section of the first drum section (11), a channel for conveying milling stock is formed between the two adjacent spiral lines, the plurality of first cutters (20) comprise a first plane (211) close to the first cross section, and the first plane (211) is inclined relative to the first cross section so as to guide the milling stock to move along the discharging direction of the channel during the rotation of the milling rotor. The milling machine comprises the milling rotor. The invention can reduce the retention of milling materials in the milling machine, thereby improving the milling efficiency of the milling machine, reducing the abrasion of a milling rotor and further reducing the operation cost and the maintenance cost of the milling machine.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a milling rotor and a milling machine.
Background
The milling rotor is a core part of the milling machine, and the performance of the milling rotor directly influences the construction efficiency of the whole machine of the milling machine and the construction effect of a road surface. The milling rotor usually comprises a series of cutters arranged in a specific pattern on a drum, and the milling machine drives the milling rotor by means of the rotation of the drum to break up the road surface and to eject the broken milled material through a discharge opening arranged in the middle of the drum, whereas the material deposits are particularly easily formed at the end of the milling rotor, as the milled material located further away from the discharge opening is less easily ejected, and the cutter seats of the cutters at the end of the milling rotor are worn.
And along with the large-scale development of milling machinery, the milling rotor is longer and longer, the milling material at the end part of the milling rotor is more and more far away from the material throwing port and is more and more difficult to throw out, the milling resistance is increased due to the detention of a large amount of milling materials, and then the cutter at the end part of the milling rotor is seriously abraded, so that the construction cost is greatly increased.
It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a milling rotor and a milling machine, which are used for improving the discharge efficiency of milling materials and reducing the abrasion of milling tools, thereby reducing the milling resistance and improving the milling efficiency.
According to one aspect of the invention, a milling rotor is provided, comprising:
a drum comprising a first drum section; and
the first cutters are arranged on the outer surface of the first barrel section, at least two spiral lines in opposite directions are formed on two sides of a first cross section of the first barrel section respectively, a channel for conveying milling materials is formed between every two adjacent spiral lines, and each first cutter comprises a first plane close to the first cross section, and the first plane is inclined relative to the first cross section so as to guide the milling materials to move along the discharging direction of the channel in the rotating process of the milling rotor.
In some embodiments, the angle α between the first cross-section and the first plane is acute.
In some embodiments, the included angle α has a magnitude of 70 ° to 80 °.
In some embodiments, the milling rotor further includes a plurality of sets of second cutters mounted on an outer surface of the second barrel section, and two adjacent sets of second cutters are spaced apart by a predetermined distance to form a discharge opening.
In some embodiments, the milling rotor further comprises a scraper arranged at the discharge opening, which scraper is configured to scrape off an end deposit of the milling rotor during rotation of the milling rotor.
In some embodiments, the distance between the point of the second tool with the smallest milling diameter and the outer surface of the second cylinder section is not more than 50 mm.
In some embodiments, the points of the tips of the plurality of first cutters and the points of the tips of the plurality of sets of second cutters form a first envelope having a right angle bend.
In some embodiments, the first envelope includes a first line segment parallel to the axis of the second cylinder segment and a second line segment perpendicular to the axis of the second cylinder segment formed by the nose points of the plurality of sets of second cutters.
In some embodiments, the distance between the knife points of two adjacent second tools on the second line segment is not more than 20 mm.
In some embodiments, the nose points of the second plurality of cutters are equally spaced along the second line segment.
In some embodiments, the starting points of the plurality of spirals located on both sides of the first cross section are arranged crosswise along the outer circumference of the first cross section.
In some embodiments, the milling rotor further comprises a stripper plate arranged between the starting points of two adjacent spirals, the stripper plate being configured to remove milled material during rotation of the milling rotor.
According to another aspect of the invention, a milling machine is provided, comprising a milling rotor as described above.
According to the technical scheme, the first cutter is spirally arranged on the surface of the roller to form a channel for conveying milling materials, the first cutter is further provided with a first plane for guiding the milling materials to move, and a driving force is provided for the milling materials to gather along the channel to the discharging direction, so that the discharging efficiency of the milling materials can be greatly improved, the retention of the milling materials in the milling machine is reduced, the milling efficiency of the milling machine is improved, the abrasion of the retained milling materials to the milling rotor is reduced, and the running cost and the maintenance cost of the milling machine are further reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of a milling rotor according to the invention;
fig. 2 shows a surface development of the milling rotor from fig. 1;
fig. 3 shows a schematic view of the first cutting tool in an embodiment of the milling rotor according to the invention;
fig. 4 shows a schematic representation of the second tool and the first envelope line in an embodiment of the milling rotor according to the invention.
In the figure:
10. a drum; 11. a first barrel section; 12. a second barrel section;
20. a first cutter; 21. a first tool apron; 211. a first plane; 22. a first cutter head;
30. a second cutter; 31. a second tool apron; 32. a second cutter head;
40. a squeegee; 50. a material throwing plate; 60. a discharge outlet; 70. a first envelope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.
The invention provides a milling rotor and a milling machine, which reduce the retention of milling materials in the milling machine by arranging milling cutters to form a channel for conveying the milling materials and arranging a plane for guiding the milling materials to move on the milling cutters, thereby improving the milling efficiency of the milling machine, reducing the abrasion of the milling materials to the milling rotor, and further reducing the milling cost and the maintenance cost of the milling machine.
As shown in fig. 1 and 2, in some embodiments, the milling rotor includes a drum 10 and a plurality of first cutters 20, wherein the drum 10 includes a first drum section 11, the plurality of first cutters 20 are mounted on an outer surface of the first drum section 11, the plurality of first cutters 20 respectively form at least two helices in opposite directions on both sides of a first cross section of the first drum section 11, a passage for transporting milling stock is formed between the adjacent two helices, the plurality of first cutters 20 includes a first plane 211 adjacent to the first cross section, and the first plane 211 is configured to be inclined with respect to the first cross section to guide the milling stock to move in a discharging direction of the passage during rotation of the milling rotor.
The first tool 20 has a specific structure as shown in fig. 3, the first tool 20 includes a first tool seat 21 and a first tool head 22, the first tool seat 21 is connected to the first barrel section 11, the first tool seat 21 includes a first plane 211, the first tool head 22 is disposed on the first tool seat 21, a first cross section is shown as a dotted line in the drawing, and referring to the direction shown in the drawing, the first plane 211 of the first tool 20 located on the left side of the first cross section is inclined to the right, and the first plane 211 of the first tool 20 located on the right side of the first cross section is inclined to the left.
As shown in fig. 2, the first cross section is shown as a dotted line in the middle of the drum 10, and with reference to the direction shown in the drawing, the left side of the first cross section has three left-handed spirals and the right side of the first cross section has three right-handed spirals, and by this arrangement, when the milling rotor rotates in the direction shown by the arrow in fig. 1, the first plane 211 collides with the milled material to change the original moving direction of the milled material, so that the milled material moving in different directions during milling is pushed to move in the channel between the spirals in the discharging direction of the channel, i.e. towards the intersection of the left-handed spiral and the right-handed spiral, so that the milled material is further ejected through a discharge opening (not shown) arranged near the intersection of the left-handed spiral and the right-handed spiral. Wherein, the quantity of levogyration helix and dextrorotation helix can be according to milling the nimble setting such as size and the construction requirement of rotor, and the juncture of levogyration helix and dextrorotation helix can be located the middle part of first section of thick bamboo section 11 as shown in the picture, also can lean on left or lean on right setting, that is to say, first cross section can be the cross-section that is located 11 middle parts of first section of thick bamboo section, also can be the cross-section that is located 11 other positions of first section of thick bamboo section, the structure and the construction conditions of same according to the milling machine set up in a flexible way can.
As shown in fig. 2, in some embodiments, the angle α between the first cross-section and the first plane 211 is acute.
The size of the included angle alpha influences the moving direction and speed of the milled material after the milled material collides with the first plane 211, and if the included angle alpha is too large, the component of the moving speed of the milled material after collision in the discharging direction is very small, so that the effect of collecting materials to a material throwing port is very small; if the included angle α is too small, on the one hand, the component of the moving speed of the milled material after collision in the direction indicated by the arrow in fig. 1 is very small, that is, the component speed of the milled material along the throwing direction is very small, which is not beneficial to throwing the milled material, and on the other hand, the milled material collided with the first plane 211 in the forward direction is small in quantity, and the collision efficiency is low, so that the aggregate effect is poor.
In some embodiments, the moving direction and speed of the milled material after colliding with the first plane 211 may be analyzed through calculation and discrete element simulation to determine the size of the included angle α, so that the milled material obtains a proper moving direction and moving speed after colliding with the first plane 211, thereby achieving the best aggregate effect.
In some embodiments, the included angle α has a magnitude of 70 ° to 80 °.
In some embodiments, the drum 10 further includes two second drum segments 12 respectively disposed at two ends of the first drum segment 11, and the milling rotor further includes a plurality of sets of second cutters 30 mounted on the outer surfaces of the second drum segments 12, and two adjacent sets of second cutters 30 are spaced apart by a predetermined distance to form the discharge opening 60.
As shown in fig. 2, the second cutters 30 are arranged in groups on the second cylinder section 12 at both ends of the cylinder 10, each group including a plurality of differently oriented second cutters 30, and as shown, each group including five second cutters 30. The number of second cutters 30 in each group may be set according to practical requirements, such as two, three or more. The second tool 30 has a specific structure as shown in fig. 4, the second tool 30 includes a second tool seat 31 and a second tool bit 32, the second tool seat 31 is connected to the second barrel section 12, and the second tool bit 32 is disposed on the second tool seat 31. The second cutters 30 may be uniformly divided into three groups on the second cylinder section 12 as shown in the figure, or may be divided into two groups, four groups, etc. according to actual needs, as long as a certain distance is left between two adjacent groups of second cutters 30 to form the discharge opening 60, and the width of the discharge opening 60 is shown as T in the figure. The discharge opening 60 may provide a space for fast operation of the material accumulated at the end of the milling rotor, so that the material accumulated between the end of the milling rotor and the side wall of the milling chamber may enter the channel formed between two adjacent spiral lines on the surface of the first barrel section 11 through the discharge opening 60 for transporting the milling material and be further transported to the discharge opening, thereby reducing the material accumulated at the end of the milling rotor, reducing the wear of the second tool apron 31 at the end of the milling rotor, and prolonging the service life of the second tool 30.
As shown in fig. 1 and 2, in some embodiments, the milling rotor further includes a scraper 40 disposed at the discharge opening 60, the scraper 40 being configured to scrape off an end charge of the milling rotor during rotation of the milling rotor.
It can be seen from the figure that the scraper 40 is arranged obliquely with respect to the end face of the milling rotor. Also, the blade 40 has a certain thickness. A bevel is provided between the front face of blade 40 (i.e., the surface that contacts the milled material) and the back face of blade 40 so that blade 40 has a trapezoidal cross-section, which is shaped to guide the milled material along the surface of blade 40. The scraper 40 can scrape off the material deposit between the end of the milling rotor and the side wall of the milling chamber as the milling rotor rotates, so that the material deposit is more easily introduced into the channel for transporting the milling material, which is formed between two adjacent spirals of the surface of the first drum section 11.
In some embodiments, the distance between the point of the second tool 30 with the smallest milling diameter and the outer surface of the second cylinder section 12 is not greater than 50 mm.
As shown in fig. 4, D shows the milling diameter of the milling circle formed by the first cutter 20 and/or the second cutter 30 when milling, the second cutter 30 having the tip point closest to the outer surface of the drum 10 has the smallest milling diameter, the distance of the tip point from the outer surface of the drum 10 is shown as N, and N is not more than 50 mm. In fact, the smaller the value of N, the better, so as to avoid to the maximum extent the wear of second seat 31 due to the collision with the road trough and the milled material, but in practice, it is found that the wear of second seat 31 near the outer surface of drum 10 is not severe, and the upper limit of the value of N is determined to be 50mm after considering the structure and construction effect of the milling rotor.
In some embodiments, the points of the tips of the plurality of first cutters 20 and the points of the tips of the plurality of sets of second cutters 30 form a first envelope 70 having a right angle bend.
And rotating all the cutters of the milling rotor to the same angle along the circumferential direction of the milling rotor, and taking the smooth curve passing through the cutter points of all the cutters as an envelope line of the cutters of the milling rotor. As shown in fig. 4, the first enveloping line 70 is obtained by rotating all the first cutters 20 and the second cutters 30 to the same angle along the circumferential direction of the milling rotor, and the shape of the first enveloping line 70 corresponds to the shape of the road groove milled by the milling rotor, so that the milling rotor with the first enveloping line 70 bent at a right angle can form a rectangular milling groove, thereby being beneficial to improving the road surface flatness and the aesthetic degree and meeting different requirements of users.
In some embodiments, the first envelope 70 includes a first line segment parallel to the axis of the second cylindrical section 12 and a second line segment perpendicular to the axis of the second cylindrical section 12 formed by the points of the tips of the sets of second cutters 30. The first and second line segments in the first envelope line 70 are each formed by the point of the cutting edge of the second tool 30.
As shown in fig. 4, a first line segment parallel to the axis of the second cylinder segment 12 is flush with a third line segment formed by the nose points of the plurality of first cutters 20, so that the flatness of the milled road groove in the horizontal direction can be ensured, and a second cutter 30 forming a second line segment perpendicular to the axis of the second cylinder segment 12 is used for side wall milling, so that the flatness of the milled road groove in the vertical direction can be ensured. Furthermore, as the milling rotor rotates, the second cutter heads 32 of the plurality of second cutters 30 forming the second line section, which are arranged at the end of the milling rotor, may form a "protective wall", reducing the collision between the second cutter seats 31 and the road trough or the milled material, so as to reduce the wear of the second cutter seats 31 and thus prolong the service life of the second cutters 30. The denser the point on the second line section, the better the protection of the second blade seat 31, and therefore, if space permits, some more second cutters 30 can be arranged at the end of the milling rotor.
In some embodiments, the distance between the knife points of two adjacent second tools 30 on the second line segment is not more than 20 mm.
As shown in fig. 4, the distance between the points of the two adjacent second cutters 30 is shown as M, and then M is not greater than 20 mm. If M is set too large, it may happen that road material between two adjacent points of the blade tip is difficult to mill off, which on the one hand reduces the milling efficiency and on the other hand leads to wear of the second blade seat 31.
In some embodiments, the knife points of the second plurality of knives 30 are equally spaced on the second line segment.
As shown in fig. 4, in the second line segment, the plurality of nose points are uniformly distributed, that is, the nose points of the second cutter 30 located at the outermost side of the drum 10 are uniformly distributed in the milling diameter direction, such an arrangement not only ensures uniform change of the milling feeding depth and is helpful for forming a flat milling sidewall, but also enables the stress of the plurality of second cutters 30 during milling operation to be uniform, thereby facilitating the later maintenance of the second cutters 30.
In some embodiments, the starting points of the plurality of spirals located on both sides of the first cross section are arranged crosswise along the outer circumference of the first cross section. Referring to the direction shown in fig. 2, the starting points of the three left-handed spiral lines on the left side of the first cross section and the three right-handed spiral lines on the right side of the first cross section are sequentially arranged in a crossed manner from top to bottom along the outer circumference of the first cross section, so that six milling and planing material outlets are formed along the outer circumference of the first cross section. For the crossing arrangement mode with left-handed helix and the dextrorotation helix one-to-one on right side, the structure of arranging helix alternately in proper order provides bigger motion space for milling the material, avoids milling the material of both sides to produce the collision and influence the effect of gathering materials in the crossing position of helix.
Further, as shown in fig. 1 and 2, in some embodiments, the milling rotor further comprises a thrower plate 50 disposed between the starting points of two adjacent spirals, the thrower plate 50 being configured to direct milled material out during rotation of the milling rotor. The front face of the throwing plate 50 (i.e. the surface in contact with the milled material) is oriented in the same direction as the direction of rotation of the milling rotor, as indicated by the arrow in fig. 1, so that during rotation of the milling rotor, the throwing plate 50 continuously hits the milled material accumulated in the middle of the drum 10, providing thrust to the milled material, so that the milled material is thrown out of the throwing opening (not shown).
The working of one embodiment of the milling rotor according to the invention is explained below:
as shown in fig. 1 and 2, the milling rotor of the present invention comprises a drum 10, a plurality of first cutters 20 and a plurality of sets of second cutters 30. The drum 10 comprises a first drum section 11 and two second drum sections 12 arranged at two ends of the first drum section 11 respectively, a plurality of first cutters 20 are mounted on the outer surface of the first drum section 11, the plurality of first cutters 20 form three left-handed spiral lines on the left side of the first cross section of the first drum section 11 and three right-handed spiral lines on the right side of the first cross section of the first drum section 11, a channel for conveying milling planing materials is formed between every two adjacent spiral lines, starting points of the three left-handed spiral lines on the left side of the first cross section and the three right-handed spiral lines on the right side of the first cross section are arranged in a crossed mode along the outer circumference of the first cross section in sequence, and a material throwing plate 50 is arranged between the starting points of the two adjacent spiral lines. Three groups of second cutters 30 are arranged on the second cylinder section 12 at the left end of the roller 10, three groups of second cutters 30 are also arranged on the second cylinder section 12 at the right end of the roller 10, each group of second cutters 30 comprises a plurality of second cutters 30 facing different directions, a certain distance is reserved between every two adjacent groups of second cutters 30 to form a discharge opening 60, the width of the discharge opening 60 is shown as T in fig. 2, and each discharge opening 60 is provided with a scraper plate 40.
As shown in fig. 3, the first tool 20 comprises a first tool seat 21 and a first tool head 22, the first tool seat 21 comprising a first plane 211 adjacent to the first cross section, the first plane 211 of the first tool 20 on the left side of the first cross section being inclined to the right and the first plane 211 of the first tool 20 on the right side of the first cross section being inclined to the left, with reference to the direction shown in the drawing, so that during rotation of the milling rotor the first plane 211 can impinge on the milled material so that the milled material moves towards the discharge direction along the passage between two adjacent spirals. In this embodiment, the included angle α between the first cross-section and the first plane 211 is 70 ° to 80 °.
As shown in fig. 4, the second tool 30 includes a second tool seat 31 and a second tool head 32, the points of the tips of the plurality of first tools 20 and the points of the tips of the plurality of groups of second tools 30 form a first envelope 70 having a right-angle bend, wherein the envelope formed by the points of the plurality of groups of second tools 30 includes a first line segment parallel to the axis of the second cylinder section 12 and flush with a third line segment formed by the points of the plurality of first tools 20 and a second line segment perpendicular to the axis of the second cylinder section 12 and formed by the points of the second tool 30 located on the outermost side of the drum 10, and on the second line segment, a distance M between the points of the adjacent two second tools 30 is not greater than 20mm, and a distance N of the point of the second tool 30 having the smallest milling diameter from the outer surface of the drum 10 is not greater than 50 mm.
During the milling operation of the milling machine, the milling rotor moves in the direction indicated by the arrow in fig. 1, the milled material produced during the milling process and near the surface of the drum 10 gathers along the transport channel between adjacent spirals towards the middle of the milling rotor (the position of the material discharge opening), the material accumulation at the end of the milling rotor is scraped off by the scraper 40 and enters the transport channel through the material discharge opening 60 and is pushed by the first plane 211 to gather towards the middle of the milling rotor, and the milled material gathered near the material discharge opening is impacted by the material discharge plate 50 and is further discharged from the material discharge opening.
By way of illustration of various embodiments of the milling rotor according to the invention, it can be seen that at least the following advantages are achieved in the embodiments of the milling rotor according to the invention:
1. aggregate and high discharging efficiency: after the movement characteristics of the milling materials are fully considered, a first plane forming an acute included angle with a first cross section of the milling rotor is arranged on the first cutter, so that the movement direction of the milling materials can be changed by using the impact of the first plane on the milling materials, the milling materials are quickly concentrated to the position of a material throwing port, and the discharge efficiency of the milling materials is improved;
2. milling efficiency is high: the discharge port and the scraper are arranged at the end part of the rotor, so that the discharge driving force and the discharge channel are provided for the accumulated materials at the end part of the milling rotor, the milling materials are prevented from being accumulated between the end part of the milling rotor and the side wall of the milling chamber, and the milling efficiency can be improved;
3. the abrasion of the tool apron is less: the points of the tips of a plurality of second tools arranged on the outermost side of the milling rotor form an envelope perpendicular to the axis of the drum, and the second tips of these second tools can form a "protective wall" for the second tool seats during rotation of the milling rotor, and, as mentioned above in point 2, the removal of the material deposits from the end of the milling rotor can also serve to reduce the wear of the second tool seats;
4. the road milling effect is good: the tool point points of the first tools and the tool point points of the second tools form a first enveloping line with a right-angle bend, so that a rectangular road surface milling groove can be obtained, and the flatness and the attractiveness of the milled road surface are guaranteed.
Based on the milling rotor, the invention also provides a milling machine, which comprises the milling rotor. The positive technical effects of the milling rotor in the above embodiments are also applicable to the milling machine, and are not described herein again.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made without departing from the principles of the invention, and these modifications and equivalents are intended to be included within the scope of the claims.
Claims (13)
1. A milling rotor, comprising:
a drum (10) comprising a first drum section (11); and
a plurality of first cutters (20) mounted to an outer surface of the first barrel section (11), wherein the first cutters (20) form at least two opposite spiral lines on two sides of a first cross section of the first barrel section (11), a channel for transporting milling material is formed between every two adjacent spiral lines, and the first cutters (20) comprise a first plane (211) close to the first cross section, and the first plane (211) is inclined relative to the first cross section to guide the milling material to move along a discharging direction of the channel in a rotating process of the milling rotor.
2. The milling rotor according to claim 1, characterized in that the angle a between the first cross section and the first plane (211) is acute.
3. Milling rotor according to claim 2, characterised in that the angle α has a magnitude of 70 ° to 80 °.
4. The milling rotor as claimed in claim 1, characterized in that the drum (10) further comprises two second drum segments (12) which are arranged at the ends of the first drum segment (11), respectively, and in that the milling rotor further comprises a plurality of sets of second cutters (30) which are mounted on the outer surface of the second drum segments (12), two adjacent sets of second cutters (30) being spaced apart by a predetermined distance to form a discharge opening (60).
5. The milling rotor according to claim 4, characterized in that it further comprises a scraper blade (40) arranged at the discharge opening (60), the scraper blade (40) being configured to scrape off an end deposit of the milling rotor during its rotation.
6. The milling rotor as claimed in claim 4, characterized in that the distance between the point of the second cutter (30) with the smallest milling diameter and the outer surface of the second drum section (12) is not more than 50 mm.
7. Milling rotor according to claim 4, characterized in that the tip points of a plurality of first cutters (20) and of a plurality of groups of second cutters (30) form a first envelope (70) with a right-angled bend.
8. Milling rotor according to claim 7, characterized in that the first envelope line (70) comprises a first line section parallel to the axis of the second drum section (12) and a second line section perpendicular to the axis of the second drum section (12) formed by the points of the tips of the sets of second cutters (30).
9. Milling rotor according to claim 8, characterized in that the distance between the nose points of two adjacent second cutters (30) on the second line section is not more than 20 mm.
10. Milling rotor according to claim 8, characterized in that on the second line section the tip points of the second plurality of cutters (30) are equally spaced.
11. The milling rotor of claim 1, wherein the starting points of the plurality of spirals on either side of the first cross section are arranged crosswise along the outer circumference of the first cross section.
12. The milling rotor as recited in claim 11, further comprising a flinger plate (50) disposed between the start points of two adjacent spirals, the flinger plate (50) being configured to direct the milled material out during rotation of the milling rotor.
13. Milling machine, characterized in that it comprises a milling rotor according to one of claims 1 to 12.
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| CN202210486395.5A CN114737456B (en) | 2022-05-06 | 2022-05-06 | Milling rotor and milling machine |
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| CN114737456B (en) | 2023-08-01 |
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