CN114045732A - Milling device capable of reducing waste accumulation for pavement milling machine - Google Patents
Milling device capable of reducing waste accumulation for pavement milling machine Download PDFInfo
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- CN114045732A CN114045732A CN202111336149.3A CN202111336149A CN114045732A CN 114045732 A CN114045732 A CN 114045732A CN 202111336149 A CN202111336149 A CN 202111336149A CN 114045732 A CN114045732 A CN 114045732A
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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)
- Road Repair (AREA)
Abstract
The invention discloses a milling device for a pavement milling machine, which can reduce waste accumulation and comprises a front baffle mechanism, a tail scraper mechanism and a machine shell. The front baffle mechanism comprises an adjustable side inclination angle rebound plate, a hinge mechanism and a hydraulic power mechanism, the adjustable side inclination angle rebound plate is respectively hinged with the left arm plate and the right arm plate to form rotary connection, and the side inclination angle of the adjustable side inclination angle rebound plate is adjusted by the front baffle mechanism through a hydraulic oil cylinder, so that milling waste thrown on the baffle by the rotary motion of the milling rotor is concentrated at the material throwing port, and the milling waste is thrown out by the material throwing plate more quickly. The tail scraping plate mechanism comprises a lifting tail plate, a rotatable scraping plate, a sliding block sliding groove mechanism, a hinge mechanism and a hydraulic power mechanism, the lifting tail plate is connected with the upper tail plate in a translation mode through the sliding block sliding groove mechanism, and the lifting tail plate adjusts translation displacement through a hydraulic oil cylinder; the rotatable scraper is hinged with the lifting tail plate to form a rotating connection, the rotatable scraper and the lifting tail plate adjust the rotating angle of the rotatable scraper through a hydraulic oil cylinder, and the tail scraper mechanism rotates the rotatable scraper while lifting the tail plate, so that the space between the tail scraper mechanism and the tool tip circular track of the milling rotor is reduced, the accumulation amount of milling waste materials is reduced, and the advancing resistance of the milling machine is reduced.
Description
Technical Field
The invention relates to a milling device for a pavement milling machine, which can reduce waste accumulation and belongs to the technical field of mechanical manufacturing.
Background
A road milling machine is one of the key equipments of an asphalt pavement construction machine. The front apron of the milling machine is parallel to the axis of the milling rotor, one part of milled waste particles is conveyed to the position of the material throwing plate by the spiral blade, the other part of the milled waste particles is thrown to the front apron along with the rotary motion of the milling rotor, the part of the waste materials which cannot be conveyed in time can be accumulated at the front apron, the material throwing effect is poor, and the operation resistance of the milling machine is increased due to the fact that the waste materials are accumulated in the milling chamber. At present, a road milling machine with a funnel-shaped front baffle is arranged, the side inclination angle of the front baffle is a fixed value, and the side inclination angle degree cannot be matched according to the rotating speed of a milling rotor, so that the optimal material throwing effect cannot be achieved.
The tail scraper of the road milling machine at the present stage can only carry out lifting motion, the traditional tail scraper is perpendicular to the road surface, the space between the tail scraper and the milling rotor is large, waste materials generated by milling of the milling machine are accumulated in the space, the running resistance of the milling rotor can be increased, and the weight of the accumulated waste materials can cause the tail scraper to be blocked in advancing. At the present stage, the tail scrapers form a fixed inclination angle with the ground, which reduces the space in which milling waste can be accumulated on the inner side of the tail plate of the milling chamber to a certain extent, but is not beneficial to avoiding obstacles of the milling machine and is not beneficial to maintaining the milling rotor.
Disclosure of Invention
In order to solve the problems, the invention provides a milling device for a pavement milling machine, which can reduce waste accumulation and comprises a front baffle mechanism, a tail scraping plate mechanism and a machine shell; the front baffle mechanism comprises an adjustable side inclination angle rebound plate, a hinge mechanism and a hydraulic power mechanism, a single-lug shaft sleeve is fixed on the adjustable side inclination angle rebound plate, the shaft sleeve and a rotating shaft are in clearance fit to form rotating connection, the rotating shaft is fixed on a right arm plate through a single-lug hinge support, a double-lug hinge support is fixed on the right arm plate and is hinged with the tail end of a hydraulic cylinder, a double-lug hinge support is fixed on the adjustable side inclination angle rebound plate and is hinged with the head end of the hydraulic cylinder, and the side inclination angle of the adjustable side inclination angle rebound plate is adjusted through the hydraulic cylinder by the front baffle mechanism. The tail scraping plate mechanism comprises a lifting tail plate, a rotatable scraping plate, a sliding block sliding groove mechanism, a hinge mechanism and a hydraulic power mechanism, the lifting tail plate moves in a translation mode through the sliding block sliding groove mechanism, the power source is a hydraulic oil cylinder, a sliding groove is formed in the lifting tail plate, the upper tail plate is integrally connected with a sliding block, a long double-lug hinged support is fixed on the upper tail plate and hinged to the tail end of a hydraulic oil cylinder, a double-lug hinged support is fixed on the lifting tail plate and hinged to the head end of the hydraulic oil cylinder, and the lifting tail plate adjusts translation displacement through the hydraulic oil cylinder; the inner side of the rotatable scraper is fixedly provided with a single-lug hinged support, the single-lug hinged support is hinged to a double-lug hinged support on the lifting tail plate, the rotatable scraper is hinged to the lifting tail plate to form a revolute pair, a double-lug shaft sleeve is fixed on the outer side of the rotatable scraper and hinged to the head of a hydraulic oil cylinder, the lifting tail plate is fixedly provided with a double-lug shaft sleeve, the double-lug shaft sleeve is hinged to the tail of the hydraulic oil cylinder, and the rotatable scraper and the lifting tail plate adjust the rotation angle of the rotatable scraper through the hydraulic oil cylinder.
Preferably, the casing includes preceding dust guard, left armed plate, right wallboard, top bent plate, goes up the tailboard, left armed plate, right wallboard symmetrical arrangement are milled plane device both sides, by preceding dust guard, top bent plate, go up the tailboard and mill plane the rotor connection between left armed plate, the right wallboard.
Preferably, the front baffle plate mechanisms are symmetrically arranged on the left arm plate and the right wall plate.
Preferably, the variable range of the side inclination angle of the adjustable side inclination angle rebound plate is 0-16 degrees.
Preferably, countersunk holes are arranged on the inner side of the adjustable side inclination angle rebound plate, and the connection mode of the adjustable side inclination angle rebound plate, the double-lug hinged support and the single-lug shaft sleeve is that the adjustable side inclination angle rebound plate is connected with a hexagon socket head cap screw bolt. Countersunk holes are arranged on the outer sides of the left arm plate and the right wall plate, and the connection mode of the left arm plate and the right wall plate with the double-lug hinged support and the single-lug hinged support is that the left arm plate and the right wall plate are connected with each other through inner hexagonal cylindrical head bolts. The inner side of the upper tail plate is provided with a counter bore, and the connection mode of the upper tail plate and the long double-lug hinged support is inner hexagonal cylindrical bolt connection. The inner side of the lifting tail plate is provided with a counter bore, and the lifting tail plate is connected with the double-lug hinged support in a mode of inner hexagonal cylindrical head bolt connection.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the side inclination angle of the adjustable side inclination angle rebound plate is adjusted through the hydraulic oil cylinder, so that the particles thrown out by the milling rotor and hitting the adjustable side inclination angle rebound plate have an axial component speed, the particles fall at the position of the material throwing port, and are thrown out by the material throwing plate more quickly, and the accumulation of waste materials at the front baffle plate is reduced.
2. The tail scraping plate mechanism with the variable inclination angle rotates the rotatable scraping plate through the lifting tail plate, the distance between the scraping plate and the tool nose circular track of the milling rotor keeps reasonable values in different working stages due to the two movements, after the space between the tail scraping plate mechanism and the milling rotor is reduced, the proportion of milling waste particles on the inner side of the tail scraping plate mechanism, which perform rotary motion together with the milling rotor, can rise, the discharge of the waste particles is accelerated, the accumulation amount of the milling waste on the inner side of the tail scraping plate mechanism of the milling chamber is reduced, and the advancing resistance of the milling machine is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention
FIG. 2 is a bottom view of the present invention
FIG. 3 is a rear view of the present invention
FIG. 4 is a front view of the invention at A of FIG. 2
FIG. 5 is an enlarged view of the invention at B of FIG. 1
FIG. 6 is a view showing the configuration of the tail scrapers when the milling rotor is disassembled and assembled according to the present invention
FIG. 7 is a view showing the form of the tail screed in milling asphalt pavement according to the present invention
Reference numerals: the anti-collision milling machine comprises a front dustproof baffle 1, a hydraulic oil cylinder 2, an adjustable side inclination angle rebound plate 3, a left wall plate 4, a top bent plate 5, a milling rotor 6, an upper tail plate 7, a lifting tail plate 8, a rotatable scraping plate 9, a right arm plate 10, a double-lug hinged support 21, a double-lug hinged support 22, a single-lug shaft sleeve 31, a single-lug hinged support 32, a rotating shaft 33, a long double-lug hinged support 71, a hydraulic oil cylinder 72, a double-lug hinged support 81, a hydraulic oil cylinder 82, a double-lug hinged support 83, a double-lug hinged support 84, a double-lug shaft sleeve 91 and a single-lug hinged support 92.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part 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 given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a milling device for a road milling machine, which can reduce the accumulation of waste materials, including a front baffle mechanism, a tail scraper mechanism, and a housing; the front baffle mechanism comprises an adjustable side inclination angle rebound plate 3, a hinge mechanism and a hydraulic power mechanism, a single lug sleeve 31 is fixed on the adjustable side inclination angle rebound plate, the single lug sleeve 31 and a rotating shaft 33 are in clearance fit to form rotary connection, the rotating shaft 33 is fixed on a right arm plate 4 through a single lug hinge support 32, a double lug hinge support 21 is fixed on the right arm plate 4, the double lug hinge support 21 is hinged with the tail end of a hydraulic oil cylinder 2, a double lug hinge support 22 is fixed on the adjustable side inclination angle rebound plate 3, the double lug hinge support 22 is hinged with the head end of the hydraulic oil cylinder 2, and the side inclination angle of the adjustable side inclination angle rebound plate 3 is adjusted through the hydraulic oil cylinder 2 by the front baffle mechanism. The tail scraping plate mechanism comprises a lifting tail plate 8, a rotatable scraping plate 9, a sliding block sliding groove mechanism, a hinge mechanism and a hydraulic power mechanism, wherein the lifting tail plate 8 moves in a translation mode through the sliding block sliding groove mechanism, the power source is a hydraulic oil cylinder 72, a sliding groove is formed in the lifting tail plate 8, an upper tail plate 7 is integrally connected with a sliding block, a long double-lug hinged support 71 is fixed on the upper tail plate 7, the long double-lug hinged support 71 is hinged to the tail end of the hydraulic oil cylinder 72, a double-lug hinged support 83 is fixed on the lifting tail plate 8, the double-lug hinged support 83 is hinged to the head end of the hydraulic oil cylinder 72, and the lifting tail plate 8 adjusts translation displacement through the hydraulic oil cylinder 72; a single-lug hinged support 92 is fixed on the inner side of the rotatable scraper 9, the single-lug hinged support 92 is hinged with a double-lug hinged support 84 on the lifting tail plate 8, the rotatable scraper 9 is hinged with the lifting tail plate 8 to form a revolute pair, a double-lug shaft sleeve 91 is fixed on the outer side of the rotatable scraper 9, the double-lug shaft sleeve 91 is hinged with the head of the hydraulic oil cylinder 82, a double-lug hinged support 81 is fixed on the lifting tail plate 8, the double-lug hinged support 81 is hinged with the tail of the hydraulic oil cylinder 82, and the rotatable scraper 9 and the lifting tail plate 8 adjust the rotation angle of the rotatable scraper 9 through the hydraulic oil cylinder 82.
As an embodiment of the invention, the side inclination angle of the adjustable side inclination angle rebound plate 3 is adjusted by the hydraulic oil cylinder 2, so that particles thrown out by the milling rotor 6 and hitting the adjustable side inclination angle rebound plate 3 have an axial component speed, and the particles fall at the position of a material throwing port, so that the particles are thrown out more quickly by the material throwing plate, and the accumulation of waste materials at a front baffle plate is reduced; the tail scraping plate mechanism with the variable inclination angle adjusts the lifting tail plate 8 through the hydraulic oil cylinder 72 to translate, and simultaneously, the rotating angle of the rotatable scraping plate 9 is rotated through the hydraulic oil cylinder 82, the distance between the tail scraping plate mechanism and the tool nose circular track of the milling rotor 6 keeps reasonable values in different working stages, after the space between the tail scraping plate mechanism and the milling rotor 6 is reduced, the proportion of milling waste particles on the inner side of the tail scraping plate mechanism, which perform rotary motion together with the milling rotor 6, can rise, the discharge of the waste particles is accelerated, so that the accumulation amount of the milling waste on the inner side of the tail scraping plate mechanism of the milling chamber is reduced, and further the advancing resistance of the milling machine is reduced.
Referring to fig. 6 to 7, fig. 6 is a shape diagram of the tail scrapers when the milling rotor 6 is disassembled and assembled, the lifting tail plate 8 is driven to ascend to a limit position by retracting the hydraulic cylinder 72, and the rotatable scrapers 9 are driven to be opened outwards by retracting the hydraulic cylinder 82, so that the milling rotor 6 can be conveniently disassembled from the lower side of the milling device; fig. 7 is a shape diagram of the tail scraper when milling the asphalt pavement according to the present invention, the lifting tail plate 8 is driven to descend by extending the hydraulic cylinder 72, and the rotatable scraper 9 is driven to rotate inward by extending the hydraulic cylinder 82, so that the tip of the rotatable scraper 9 and the tip circular trajectory bottom end of the milling rotor 6 are in the same horizontal plane.
The casing includes preceding dust guard 1, left armed plate 4, right wallboard 10, top bent plate 5, goes up tailboard 7, left side armed plate 4, right wallboard 10 symmetrical arrangement are milled plane device both sides, by preceding dust guard 1, top bent plate 5, go up tailboard 7 and mill plane rotor 6 and connect between left side armed plate 4, the right wallboard 10.
The front baffle plate mechanisms are symmetrically arranged on the left arm plate 4 and the right wall plate 10.
The side inclination angle variable range of the adjustable side inclination angle rebound plate 3 is 0-16 degrees.
The inner side of the adjustable side inclination angle rebound plate 3 is provided with a countersunk hole which is connected with the double-lug hinged support 22 and the single-lug shaft sleeve 31 by inner hexagonal cylinder head bolts. Countersunk holes are arranged on the outer sides of the left arm plate 4 and the right wall plate 10 and are connected with the double-lug hinged support 21 and the single-lug hinged support 32 through inner hexagonal cylindrical head bolts. The inner side of the tail plate 7 is provided with a countersunk hole, and the connection mode of the countersunk hole and the long double-lug hinged support 71 is inner hexagonal cylinder head bolt connection. The inner side of the lifting tail plate 8 is provided with a countersunk hole, and the connection mode of the countersunk hole and the double-lug hinged supports 81, 83 and 84 is inner hexagonal cylinder head bolt connection.
The working principle of the invention is as follows: when the milling device capable of reducing waste accumulation for the road milling machine is placed on a road to work, milled road waste particles are thrown forwards along with the rotary motion of a milling rotor 6, the adjustable side inclination angle rebound plate 3 blocks the waste particles from being thrown out of a milling chamber, the adjustable side inclination angle rebound plate 3 can rotate around a rotating shaft by 0-16 degrees, the rotating shaft 33 is respectively fixed on the left wall plate 4 and the right wall plate 10 through the single-lug hinged support 32, the power mechanism is a hydraulic oil cylinder mechanism, the thrown waste particles have a component speed towards a throwing port after impacting the adjustable side inclination angle rebound plate 3, the waste particles can be more quickly gathered at the throwing port to be thrown out by the throwing plate, and waste accumulation is reduced. An upper tail plate 7 is fixed between the left wall plate 4 and the right wall plate 10, the lifting tail plate 8 is connected with the upper tail plate 7 in a translation manner through a sliding block and sliding groove mechanism to realize movement in the vertical direction, and the power mechanism is a hydraulic oil cylinder 72; rotatable scraper blade 9 hinges with lift tailboard 8 through the hinge mechanism and forms to rotate and be connected, power unit is hydraulic cylinder 82, when lift tailboard 8 and rotatable scraper blade 9 elevating movement, rotatable scraper blade 9 can rotate in real time and adjust tail scraper blade mechanism and mill the distance between the rotor 6, make the distance between tail scraper blade mechanism and the knife tip circular track of milling the rotor 6 keep reasonable value at different working stages, make the waste material can pile up the space at tail scraper blade mechanism department and reduce, thereby reduce piling up of waste material granule.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. A milling device for a pavement milling machine capable of reducing waste accumulation is characterized by comprising a front baffle mechanism, a tail scraping plate mechanism and a machine shell; the front baffle mechanism comprises an adjustable side inclination angle rebound plate, a hinge mechanism and a hydraulic power mechanism, a single-lug shaft sleeve is fixed on the adjustable side inclination angle rebound plate, the shaft sleeve and a rotating shaft are in clearance fit to form rotating connection, the rotating shaft is fixed on a right arm plate through a single-lug hinge support, a double-lug hinge support is fixed on the right arm plate and is hinged with the tail end of a hydraulic cylinder, a double-lug hinge support is fixed on the adjustable side inclination angle rebound plate and is hinged with the head end of the hydraulic cylinder, and the side inclination angle of the adjustable side inclination angle rebound plate is adjusted through the hydraulic cylinder by the front baffle mechanism. The tail scraping plate mechanism comprises a lifting tail plate, a rotatable scraping plate, a sliding block sliding groove mechanism, a hinge mechanism and a hydraulic power mechanism, the lifting tail plate moves in a translation mode through the sliding block sliding groove mechanism, the power source is a hydraulic oil cylinder, a sliding groove is formed in the lifting tail plate, the upper tail plate is integrally connected with a sliding block, a long double-lug hinged support is fixed on the upper tail plate and hinged to the tail end of the hydraulic oil cylinder, a double-lug hinged support is fixed on the lifting tail plate and hinged to the head end of the hydraulic oil cylinder, and the lifting tail plate adjusts translation displacement through the hydraulic oil cylinder; the inner side of the rotatable scraper is fixedly provided with a single-lug hinged support, the single-lug hinged support is hinged to a double-lug hinged support on the lifting tail plate, the rotatable scraper is hinged to the lifting tail plate to form a revolute pair, a double-lug shaft sleeve is fixed on the outer side of the rotatable scraper, the double-lug shaft sleeve is hinged to the head of the hydraulic oil cylinder, the lifting tail plate is fixedly provided with a double-lug shaft sleeve, the double-lug shaft sleeve is hinged to the tail of the hydraulic oil cylinder, and the rotatable scraper and the lifting tail plate adjust the rotation angle of the rotatable scraper through the hydraulic oil cylinder.
2. The milling device capable of reducing waste accumulation for the road milling machine according to claim 1, wherein the housing comprises a front dust guard, a left arm plate, a right wall plate, a top bend plate and an upper tail plate, the left arm plate and the right wall plate are symmetrically arranged on two sides of the milling device, and the left arm plate and the right wall plate are connected through the front dust guard, the top bend plate, the upper tail plate and the milling rotor.
3. The milling device of claim 1, wherein the front baffle means are symmetrically arranged on the left arm plate and the right wall plate.
4. The milling device of claim 1, wherein the adjustable side inclination rebound plate has a side inclination variable in the range of 0 ° to 16 °.
5. The milling device for the road milling machine capable of reducing the waste accumulation according to claim 1, wherein the adjustable side inclination rebound plate is provided with a countersunk hole on the inner side, and the connection mode of the adjustable side inclination rebound plate, the binaural hinged support and the monaural sleeve is a hexagon socket head stud bolt. Countersunk holes are arranged on the outer sides of the left arm plate and the right wall plate, and the connection mode of the left arm plate and the right wall plate with the double-lug hinged support and the single-lug hinged support is that the left arm plate and the right wall plate are connected with each other through inner hexagonal cylindrical head bolts. The inner side of the upper tail plate is provided with a counter bore, and the connection mode of the upper tail plate and the long double-lug hinged support is inner hexagonal cylindrical bolt connection. The inner side of the lifting tail plate is provided with a counter bore, and the lifting tail plate is connected with the double-lug hinged support in a mode of inner hexagonal cylindrical head bolt connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111336149.3A CN114045732A (en) | 2021-11-12 | 2021-11-12 | Milling device capable of reducing waste accumulation for pavement milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111336149.3A CN114045732A (en) | 2021-11-12 | 2021-11-12 | Milling device capable of reducing waste accumulation for pavement milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114045732A true CN114045732A (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111336149.3A Withdrawn CN114045732A (en) | 2021-11-12 | 2021-11-12 | Milling device capable of reducing waste accumulation for pavement milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114045732A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114737456A (en) * | 2022-05-06 | 2022-07-12 | 江苏徐工工程机械研究院有限公司 | Milling rotor and milling machine |
| CN114922037A (en) * | 2022-07-20 | 2022-08-19 | 徐州徐工筑路机械有限公司 | Scraping device for pavement milling machine |
-
2021
- 2021-11-12 CN CN202111336149.3A patent/CN114045732A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114737456A (en) * | 2022-05-06 | 2022-07-12 | 江苏徐工工程机械研究院有限公司 | Milling rotor and milling machine |
| CN114737456B (en) * | 2022-05-06 | 2023-08-01 | 江苏徐工工程机械研究院有限公司 | Milling rotor and milling machine |
| CN114922037A (en) * | 2022-07-20 | 2022-08-19 | 徐州徐工筑路机械有限公司 | Scraping device for pavement milling machine |
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Application publication date: 20220215 |
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| WW01 | Invention patent application withdrawn after publication |