CN113235347B - Asphalt noise reduction pavement construction method - Google Patents
Asphalt noise reduction pavement construction method Download PDFInfo
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- CN113235347B CN113235347B CN202110424963.4A CN202110424963A CN113235347B CN 113235347 B CN113235347 B CN 113235347B CN 202110424963 A CN202110424963 A CN 202110424963A CN 113235347 B CN113235347 B CN 113235347B
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
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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
- E01C11/00—Details of pavings
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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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/18—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
The application relates to a construction method of an asphalt noise reduction road surface, which comprises the following steps: s1: cleaning and leveling the road surface needing to be paved with the asphalt noise reduction road surface to form a roadbed for paving the asphalt mixture; s2: preparing an asphalt mixture; s3: paving an asphalt mixture on the road surface by using asphalt paving equipment; the asphalt paving equipment comprises a frame, wherein the frame is provided with a walking device for driving the whole structure to walk and a scraper conveying device for conveying asphalt mixture; the scraper conveying device comprises a material carrying plate, a chain transmission mechanism and a plurality of scrapers, wherein the material carrying plate is relatively fixed with the rack, and the chain transmission mechanism is used for driving each scraper to circularly scrape and convey asphalt mixture on the surface of the material carrying plate; each scraper blade all inserts and is equipped with the scraping piece, and the frame is equipped with two pushing mechanism that are used for promoting the scraping piece and slide along scraper blade length direction, and two pushing mechanism drive scraping piece toward opposite direction respectively and remove. The method and the device can reduce the condition that dead materials are generated in the asphalt paving process to influence the quality of the asphalt pavement.
Description
Technical Field
The application relates to the field of road construction technology, in particular to a construction method of an asphalt noise reduction pavement.
Background
The asphalt noise reduction pavement is a pavement with a function of reducing traffic travel noise. Asphalt pavement is usually paved by asphalt paving equipment, in the pavement paving construction process, a quantity device for conveying materials on the paving equipment can remain partial asphalt, along with the pavement work, the flowability of the residual asphalt on the conveying device is reduced, the viscosity is increased, a dead material which is not easy to clean is formed, and the asphalt dead material is easy to be mixed into the normally paved asphalt to influence the paving quality of the pavement.
Disclosure of Invention
In order to reduce the situations that asphalt dead materials are generated in the asphalt pavement construction process and pavement paving quality is affected, the application provides a construction method of the asphalt noise reduction pavement.
The construction method for the asphalt noise reduction pavement adopts the following technical scheme:
a construction method of an asphalt noise reduction pavement comprises the following steps:
s1: cleaning and leveling the road surface needing to be paved with the asphalt noise reduction road surface to form a roadbed for paving the asphalt mixture;
s2: preparing an asphalt mixture;
s3: paving an asphalt mixture on the road surface by using asphalt paving equipment; the asphalt paving equipment comprises a frame, wherein the frame is provided with a walking device for driving the whole structure to walk and a scraper conveying device for conveying asphalt mixture; the scraper conveying device comprises a material carrying plate, a chain transmission mechanism and a plurality of scrapers, wherein the material carrying plate is relatively fixed with the rack, and the chain transmission mechanism is used for driving the scrapers to circularly scrape asphalt mixture on the surface of the material carrying plate; the scraping pieces are inserted into the scraping plates and comprise transverse plates and two vertical plates, the two vertical plates are respectively and vertically fixed on two sides of the transverse plates, the two vertical plates are parallel to each other, the two vertical plates are respectively abutted against two opposite side surfaces of the scraping plates, and when the scraping plates scrape and send the asphalt mixture, one side surface, far away from the transverse plates, of each scraping plate faces to the upper surfaces of the material carrying plates; the frame is equipped with two and is used for promoting scraping piece is followed the pushing mechanism that scraper blade length direction slided, two pushing mechanism drives respectively scraping piece moves towards opposite direction.
By adopting the technical scheme, the scraper conveying device of the paving equipment drives the scraper to circularly scrape the asphalt mixture on the material carrying plate by the chain transmission mechanism in the process of conveying the asphalt mixture; in the process of scraping and conveying the asphalt mixture by the scraper, asphalt residues adhered to the surface can drive the scraper to perform reciprocating scraping and cleaning through the two pushing mechanisms, the scraper can scrape the asphalt residues on the surface of the scraper into the asphalt mixture in time, and the condition that the asphalt residues are cooled to form dead materials on the surface of the scraper is reduced, so that the condition that the pavement paving quality is influenced when the dead materials are mixed into the asphalt mixture is reduced; wherein the side of the transverse plate of the scraping plate far away from the scraping piece faces the upper surface of the material carrying plate, so that the clearance between the scraping plate and the upper surface of the material carrying plate can be reduced as much as possible, and the reduction of the residual materials on the surface of the material carrying plate is facilitated.
Optionally, the pushing mechanism includes a mounting plate, a pushing member and an electric push rod, the electric push rod includes a push rod main body and a push rod, the push rod main body is fixedly provided with a rotating shaft, the rotating shaft is rotatably connected with the mounting plate, the rotating shaft is perpendicular to the mounting plate, and the rotating shaft is sleeved with a first torsion spring which forces the axis of the electric push rod to be parallel to the scraper; a cylinder is vertically and fixedly arranged at the output end of the push rod, an arc-shaped groove matched with the cylinder is arranged on the pushing piece, the cylinder and the arc-shaped groove are spliced along the axial direction of the cylinder, and a second torsion spring for forcing the notch of the arc-shaped groove of the pushing piece to face the length direction of the push rod is sleeved on the cylinder; and a straight handle is vertically and fixedly arranged on one side of the transverse plate of the scraping piece, which is far away from the two vertical plates, and a notch for the straight handle to abut against is arranged on one side of the pushing piece, which is far away from the arc-shaped groove.
By adopting the technical scheme, the electric push rod of the pushing mechanism drives the groove wall of the notch of the pushing piece to abut against the straight shank on the scraping piece so as to push the scraping piece to scrape and clean the surface of the scraping plate; in the process, the scraper and the scraping pieces on the scraper are continuously driven by the chain transmission mechanism to move, so that the pushing pieces simultaneously generate movement in the direction parallel to the conveying direction of the scraper conveying device and movement in the length direction of the scraper; in the process, the pushing piece drives the electric push rod to rotate around the rotating shaft, meanwhile, the pushing piece and the cylinder rotate relatively, when the pushing piece drives the pushing piece to reach the tail end of the stroke and return to the initial position, the first torsion spring forces the electric push rod to rotate to the initial position, and the second torsion spring forces the pushing piece to rotate to the initial position to wait for the next pushing action.
Optionally, magnets are fixedly arranged on the outer sides of the vertical plates of the two scraping pieces, and the scraping plates are made of steel materials.
Through adopting above-mentioned technical scheme, have magnetic attraction between the magnet in the riser outside and the scraper blade, be favorable to making the riser hug closely the surface of scraper blade, strengthen the scraping effect.
Optionally, one side of each of the two vertical plates, which is far away from the transverse plate, is provided with a folded edge, the two folded edges gradually approach each other along the direction far away from the transverse plate, avoidance chamfers for avoiding the two folded edges are arranged on two opposite sides of the scraper, and inner side surfaces of the folded edges abut against surfaces of the avoidance chamfers.
Through adopting above-mentioned technical scheme, the hem that diaphragm one side was kept away from to the riser with dodge the surperficial butt of chamfer, two hems form the clamping action to the side of dodging the chamfer of scraper blade, can reduce the condition that scraping piece breaks away from the scraper blade.
Optionally, the straight shank is set to two, two the straight shank supplies two respectively the scarce groove butt, two be connected with the connecting plate jointly between the straight shank, the surface of connecting plate sets firmly the reinforcing plate perpendicularly.
The straight shank on the scraping piece circularly moves up and down along with the scraping plate, and when the asphalt mixture is scraped and conveyed by the scraping plate, the straight shank and the asphalt mixture have interaction force; by adopting the technical scheme, the number of the straight handles is two, the two straight handles correspond to the pushing piece of one pushing mechanism respectively, and the two straight handles are connected through the connecting plate, so that the structural stability of the two straight handles is enhanced, and the situation that the straight handles are bent under the action of the asphalt mixture is reduced; the reinforcing plate can improve the structural stability of connecting plate to further strengthen the structural stability of two straight shanks.
Optionally, two opposite sides of the vertical plate are respectively provided with a guide surface, and a first sharp corner is formed between the guide surface and the inner side surface of the vertical plate.
By adopting the technical scheme, a sharp corner is formed between the guide surface and the inner side surface of the vertical plate, so that the vertical plate is more easy to scrape asphalt residues on the surface of the scraper.
Optionally, two opposite sides of each vertical plate are respectively provided with a groove, the grooves are located on the outer side surfaces of the vertical plates and penetrate through the two side surfaces, parallel to the transverse plate, of the vertical plates, and a second sharp corner is formed between a groove wall of each groove, close to the first sharp corner, and the guide surface.
Through adopting above-mentioned technical scheme, form the second closed angle between the cell wall of spigot surface and recess, when first closed angle scraped the pitch defective material on riser surface, the pitch defective material was piled up gradually to the direction of keeping away from first closed angle along the spigot surface, through setting up the recess, and made and form the second closed angle between the cell wall of recess and the spigot surface, made the pitch defective material be difficult to cross the lateral surface of recess adhesion at the riser to be favorable to making the pitch defective material drop from scraping a surface as early as possible.
Optionally, a steel wire rope is arranged on one side of the scraper away from the transverse plate, and the scraper scrapes the material carrying plate through the steel wire rope; the steel wire rope faces the length direction of the scraper, an avoiding groove is formed in one side, far away from the transverse plate, of the scraper and penetrates through two end faces of the scraper, the steel wire rope is partially located in the avoiding groove, and tightening pieces are arranged at two ends of the steel wire rope.
By adopting the technical scheme, the steel wire rope is kept in a tightened state under the action of the tightening piece, the scraper scrapes the surface of the material carrying plate through the steel wire rope, and the steel wire rope can be kept straight as much as possible in the tightened state, so that the steel wire rope is attached to the surface of the material carrying plate as much as possible, and the asphalt mixture on the surface of the material carrying plate is scraped as much as possible; because wire rope has the flexibility, can adapt to the unsmooth change on year flitch surface, be favorable to scraping the pitch compounding on year flitch surface as far as possible, reduce the friction to carrying the flitch to reduce the resistance of scraper blade feeding device operation, so as to do benefit to and make defeated material process more smooth and easy.
Optionally, the tightening piece includes two threaded sleeves, two threaded holes are respectively formed in two ends of the scraper, the two threaded sleeves are in threaded connection with the threaded holes in the two ends of the scraper, the axis of each threaded sleeve is parallel to the length direction of the scraper, the threaded holes are communicated with the avoidance grooves, the end portion of the steel wire rope penetrates through the threaded sleeves and is fixedly provided with a protruding block, and the protruding block abuts against the outer end face of the threaded sleeve.
By adopting the technical scheme, the convex block fixedly arranged at the end part of the steel wire rope is abutted against the threaded sleeve, so that the threaded sleeve can limit the end part of the steel wire rope, and when the threaded sleeve rotates relative to the thread of the scraper, the steel wire rope can be tensioned or loosened, thereby tightening and adjusting the steel wire rope.
Optionally, the process of preparing the asphalt mixture comprises preparing an aggregate; the process of preparing the aggregate adopts a conventional three-stage breaking process, and is further added with a counterattack breaking process, the needle flake content of the aggregate with the thickness of 5 mm-8 mm is controlled to be below 12 percent, and the technical index of 2:1 needle flake is increased and controlled to be within 15 percent.
By adopting the technical scheme, good aggregate particle morphology and skeleton embedding and extruding structure can be obtained, and the mixture is ensured to have high temperature performance and anti-skid performance.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when a scraper material conveying device of paving equipment conveys asphalt mixtures, asphalt residues adhered to the surface of a scraper can drive scraping pieces to perform reciprocating scraping and cleaning through two pushing mechanisms, the scraping pieces scrape the asphalt residues on the surface of the scraper into the asphalt mixtures in time, and the condition that the asphalt residues are cooled on the surface of the scraper to form dead materials is reduced, so that the condition that the dead materials are mixed into the asphalt mixtures to influence the paving quality of a road surface is reduced;
2. through setting up wire rope, wire rope keeps the state of tightening under the effect of tightening piece, and the scraper blade passes through the surface that the flitch was carried in the wire rope scraping, is favorable to carrying the pitch compounding on flitch surface and scraping as far as possible in, reduces the friction to carrying the flitch to reduce the resistance of scraper blade feeding device operation, so as to do benefit to and make defeated material process more smooth and easy.
Drawings
Fig. 1 is a flowchart of the construction method of the present embodiment.
Fig. 2 is a schematic view of the entire structure of the scraper conveyor of this embodiment.
Fig. 3 is a schematic structural view of the scraper conveyor of this embodiment.
Fig. 4 is a partial enlarged view at a in fig. 3.
Fig. 5 is a schematic structural view of the pushing mechanism of the present embodiment.
Fig. 6 is a schematic diagram for showing the connection relationship between the flight and the wire rope according to the present embodiment.
Description of reference numerals: 1. a frame; 2. a hopper; 3. a traveling device; 4. a scraper plate conveying device; 41. a material carrying plate; 42. a chain transmission mechanism; 421. a chain; 4211. a working section; 4212. a return section; 422. a sprocket; 43. a squeegee; 431. avoiding chamfering; 432. an avoidance groove; 433. a threaded hole; 5. a spiral material distributing device; 6. a screed plate; 7. a scraping member; 71. a transverse plate; 72. a vertical plate; 721. folding edges; 722. a guide surface; 723. a first sharp corner; 724. a groove; 725. a second sharp corner; 73. a straight shank; 74. a connecting plate; 75. a reinforcing plate; 76. a magnet; 8. a pushing mechanism; 81. mounting a plate; 82. a pusher member; 821. notching; 822. an arc-shaped slot; 83. an electric push rod; 831. a push rod body; 832. a push rod; 84. a rotating shaft; 85. a first torsion spring; 86. a cylinder; 87. a second torsion spring; 9. a wire rope; 91. a bump; 10. a tightening member; 101. a threaded sleeve.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses a construction method of an asphalt noise reduction pavement. Referring to fig. 1 and 2, the asphalt noise reduction pavement construction method includes the following steps.
S1: cleaning and leveling the road surface needing to be paved with the asphalt noise reduction road surface to form a roadbed for paving the asphalt mixture;
s2: preparing an asphalt mixture, wherein the process comprises preparing aggregates; the process of preparing the aggregate adopts a conventional three-stage breaking process, and further increases a counterattack breaking process, controls the content of 5 mm-8 mm aggregate needle sheets to be below 12 percent, increases 2:1 needle sheet technical indexes, and controls the content to be within 15 percent;
s3: paving an asphalt mixture on the road surface by using asphalt paving equipment; the asphalt paving equipment comprises a frame 1, a hopper 2, a traveling device 3, a scraper conveying device 4, a spiral distributing device 5 and a screed 6, wherein the traveling device 3 drives the whole structure to travel, an asphalt mixture is input into the scraper conveying device 4 from the hopper 2 and then is conveyed to the spiral distributing device 5 through the scraper conveying device 4, the spiral distributing device 5 paves the asphalt mixture to the ground along with the traveling process of the traveling device 3, and the screed 6 screeds and preliminarily compacts the asphalt mixture paved to the ground; before paving, the screed 6 is preheated for not less than 30 minutes to ensure that the temperature is not lower than 100 ℃; in the construction process, an operator monitors the paving temperature of the asphalt mixture by using an infrared thermometer, and the paving temperature is not lower than 190 ℃. When the thin-layer asphalt is paved, asphalt paving equipment needs to be slowly, uniformly and continuously paved;
s4: and immediately compacting the mixture after the mixture is paved, and carrying out initial pressing, re-pressing and final pressing by adopting a steel wheel type, tire type and vibratory roller. When rolling, firstly, the steel wheel roller is used for static pressure once, then the tyre roller is used for re-rolling for three to four times, and when the compactness basically meets the requirement, the steel wheel roller is used for final rolling of the rolling surface.
Referring to fig. 3, in the asphalt paving apparatus applied in the above process, the conveying device of the scraper 43 is located at the lower part of the frame 1, the scraper conveying device 4 includes a material carrying plate 41 and a plurality of scrapers 43, the material carrying plate 41 is horizontally arranged and fixedly connected with the frame 1, and the chain transmission mechanism 42 is located above the material carrying plate 41; the two groups of chain transmission mechanisms 42 are arranged, the two groups of chain transmission mechanisms 42 are respectively positioned on two opposite sides of the material carrying plate 41, each chain transmission mechanism 42 comprises a chain 421 and two chain wheels 422, one chain wheel 422 is a driving chain wheel 422, the other chain wheel 422 is a driven chain wheel 422, and a power system of the asphalt paving equipment drives the driving chain wheel 422 to drive the chain 421 and the driven chain wheel 422 to run; the part of the chain 421 moving to the position close to the material carrying plate 41 is set as a working section 4211, the part of the chain 421 moving to the position far from the material carrying plate 41 is set as a return section 4212, wherein the return section 4212 is positioned above the working section 4211; both ends of each scraper 43 are respectively fixedly connected with two chains 421, each scraper 43 is arranged at equal distance along the extending direction of the chains 421, and the scrapers 43 are vertical to the material conveying direction of the scraper 43 conveying device; the chain transmission mechanism 42 operates to drive the scraper 43 of the working section 4211 of the chain 421 to scrape the asphalt mixture on the upper surface of the material-carrying plate 41.
Referring to fig. 2, 3 and 4, each scraping plate 43 is inserted with a scraping piece 7, each scraping piece 7 includes a transverse plate 71 and two vertical plates 72, the two vertical plates 72 are respectively and vertically fixed on two sides of the transverse plate 71, the two vertical plates 72 are parallel to each other, the transverse plate 71 and the two vertical plates 72 together form a U-shaped structure, and an opening for inserting the scraping plate 43 is formed between one sides of the two vertical plates 72 far away from the transverse plate 71; the two risers 72 abut against the opposite side faces of the scraper 43 respectively, and when the scraper 43 is located in the return segment 4212 of the chain 421, the opening of the scraper 7 faces the upper surface of the material-carrying plate 41; the frame 1 is provided with two pushing mechanisms 8 for pushing the scraping piece 7 to slide along the length direction of the scraping plate 43, and the two pushing mechanisms 8 respectively drive the scraping piece 7 to move in opposite directions; the scraping piece can scrape and clean asphalt residues on the surface of the scraper in time, and the condition that the asphalt residues are mixed into normal asphalt mixture to influence the quality of an asphalt pavement after being retained on the scraper to form dead materials is reduced.
Referring to fig. 2 and 4, the pushing mechanism 8 includes a mounting plate 81, a pushing member 82 and an electric push rod 83, the mounting plate 81 is fixed relative to the frame 1 and is parallel to the material loading plate 41, and the mounting plate 81 is located between the return segment 4212 and the working segment 4211 of the chain 421; the electric push rod 83 comprises a push rod 832, one end of the main body of the push rod 832, which is far away from the output end of the push rod 832, is fixedly provided with a rotating shaft 84, the rotating shaft 84 is vertical to the axis of the electric push rod 83, the rotating shaft 84 is rotatably connected with the mounting plate 81, the rotating shaft 84 is vertical to the mounting plate 81, and the rotating shaft 84 is sleeved with a first torsion spring 85 which forces the axis of the push rod 832 to be parallel to the scraper 43; a cylinder 86 is vertically and fixedly arranged at the output end of the push rod 832, the cylinder 86 is vertical to the mounting plate 81, the pushing piece 82 is provided with an arc-shaped groove 822 matched with the cylinder 86, the cylinder 86 is inserted into the arc-shaped groove 822 along the axial direction of the cylinder 86, and the cylinder 86 is sleeved with a second torsion spring 87 for forcing the notch of the arc-shaped groove 822 of the pushing piece 82 to face the length direction of the push rod 832; a straight handle 73 is vertically and fixedly arranged on one side of the transverse plate 71 of the scraping piece 7, which is far away from the two vertical plates 72, and a notch 821 for the straight handle 73 to abut against is arranged on one side of the pushing piece 82, which is far away from the arc-shaped groove 822.
The electric push rod 83 of the pushing mechanism 8 pushes the straight shank 73 to push the scraping piece 7 to scrape the surface of the scraping plate 43; during this process, the scraper 7 is simultaneously moved in parallel with the feeding direction of the scraper conveyor 4 and in parallel with the scraper 43; in the movement process, the pushing member 82 drives the electric push rod 83 to rotate around the rotating shaft 84, meanwhile, the pushing member 82 and the cylinder 86 rotate relatively, when the electric push rod 83 drives the pushing member 82 to reach the tail end of the stroke and return to the starting end of the forming, the first torsion spring 85 forces the electric push rod 83 to rotate to the initial position, and the second torsion spring 87 forces the pushing member 82 to rotate to the initial position to wait for the next pushing action.
Referring to fig. 3 and 4, two straight handles 73 are provided on each scraper 7, the two straight handles 73 are respectively abutted by the notches 821 of the pushing members 82 on the two pushing mechanisms 8, a connecting plate 74 is commonly connected between the two straight handles 73, the connecting plate 74 is welded and fixed with the straight handles 73 and the transverse plate 71 of the scraper 7, reinforcing plates 75 are vertically welded on two surfaces of the connecting plate 74, and the reinforcing plates 75 are welded and fixed with the scraper 7; the connecting plates 74 and the reinforcing plates 75 reinforce the structural stability of the straight shank 73, and the straight shank 73 is less likely to deform in interaction with the asphalt mixture when the flight 43 is located in the working section 4211 of the chain 421.
Referring to fig. 4, the two vertical plates 72 are respectively bent to form folded edges 721 at the sides far away from the transverse plate 71, the two folded edges 721 gradually approach each other in an inclined manner along the direction far away from the transverse plate 71, an avoiding chamfer 431 is respectively arranged between the two opposite side surfaces of the scraper 43 and the surface far away from the transverse plate 71, the inner side surfaces of the two folded edges 721 are respectively abutted against the surface of one avoiding chamfer 431, and the folded edges 721 clamp the side of the scraper 43 far away from the transverse plate 71, so that the scraper 7 on the scraper 43 of the return section 4212 of the chain 421 is not easy to fall off; magnets 76 are fixedly arranged on the outer sides of the vertical plates 72 of the two scraping pieces 7, the scraping plate 43 is made of steel materials, and the magnets 76 can enable the two vertical plates 72 to be attached to the surface of the scraping plate 43 so as to improve the effect of scraping asphalt residues.
Referring to fig. 4, two opposite sides of each vertical plate 72 are provided with guide surfaces 722, the guide surfaces 722 are arranged on the outer sides of the vertical plates 72, and a first sharp angle 723 is formed between the guide surfaces 722 and the inner side surfaces of the vertical plates 72 so as to facilitate scraping asphalt residues on the surfaces of the scrapers 43; two grooves 724 are formed in the outer side faces of the vertical plates 72, the two grooves 724 are close to one of the first sharp corners 723 respectively, the two grooves 724 penetrate through the vertical plates 72 and are parallel to the two side faces of the transverse plate 71, and second sharp corners 725 are formed between the groove walls of the grooves 724 and the guide faces 722; by providing the groove 724 and the second sharp corner 725, the asphalt residue is difficult to pass through the groove 724 and adhere to the outer side of the riser 72 after being scraped off the scraper 43 by the first sharp corner 723, thereby facilitating the asphalt residue to fall into the asphalt mixture as soon as possible.
Referring to fig. 3 and 6, a wire rope 9 is disposed on a side of the scraper 43 away from the horizontal plate 71, the wire rope 9 faces a length normal direction of the scraper 43, an avoiding groove 432 is disposed on a side of the scraper 43 away from the horizontal plate 71, the avoiding groove 432 penetrates through two end surfaces of the scraper 43, the wire rope 9 is partially disposed in the avoiding groove 432, when the scraper 43 is disposed in the working section 4211 of the chain 421, the wire rope 9 abuts against a surface of the material carrying plate 41, and the scraper 43 scrapes the surface of the material carrying plate 41 through the wire rope 9.
Referring to fig. 6, both ends of the scraper 43 are provided with tighteners 10 for tightening the wire rope 9; the tightening piece 10 comprises two thread sleeves 101, two ends of the scraper 43 are respectively provided with two threaded holes 433, the axes of the two threaded holes 433 are parallel to the length direction of the scraper 43, the threaded holes 433 are communicated with the avoidance groove 432, the end part of the steel wire rope 9 penetrates through the thread sleeves 101 and is fixedly provided with a convex block 91, and the convex block 91 is abutted against the outer end face of the thread sleeves 101; by spirally rotating the threaded sleeves 101, the distance between the two threaded sleeves 101 can be increased or decreased, thereby tightening or loosening the wire rope 9.
The scraper 43 scrapes the surface of the material carrying plate 41 through the steel wire rope 9, so that the steel wire rope 9 abuts against the upper surface of the material carrying plate 41 to scrape off asphalt as much as possible, and meanwhile, the steel wire rope 9 has flexibility, can adapt to concave-convex changes of the upper surface of the material carrying plate 41, and reduces the blocking condition as much as possible.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A construction method of an asphalt noise reduction pavement comprises the following steps:
s1: cleaning and leveling the road surface needing to be paved with the asphalt noise reduction road surface to form a roadbed for paving the asphalt mixture;
s2: preparing an asphalt mixture;
s3: paving an asphalt mixture on the road surface by using asphalt paving equipment; the asphalt paving equipment comprises a frame (1), wherein the frame (1) is provided with a walking device (3) for driving the whole structure to walk and a scraper conveying device (4) for conveying asphalt mixture; the scraper conveying device (4) comprises a material carrying plate (41), a chain transmission mechanism (42) and a plurality of scrapers (43), the material carrying plate (41) is fixed on the rack (1), and the chain transmission mechanism (42) is used for driving the scrapers (43) to circularly scrape asphalt mixtures on the surface of the material carrying plate (41); scraping pieces (7) are inserted into the scraping plates (43), each scraping piece (7) comprises a transverse plate (71) and two vertical plates (72), the two vertical plates (72) are respectively and vertically fixed to two sides of the transverse plate (71), the two vertical plates (72) are parallel to each other, the two vertical plates (72) are respectively abutted to two opposite side surfaces of the scraping plate (43), and when the scraping plates (43) scrape and send the asphalt mixture, one side surface, far away from the transverse plate (71), of each scraping plate (43) faces to the upper surface of the material carrying plate (41); the rack (1) is provided with two pushing mechanisms (8) for pushing the scraping piece (7) to slide along the length direction of the scraping plate (43), and the two pushing mechanisms (8) respectively drive the scraping piece (7) to move in opposite directions; the pushing mechanism (8) comprises a mounting plate (81), a pushing piece (82) and an electric push rod (83), the electric push rod (83) comprises a push rod (832) main body and a push rod (832), a rotating shaft (84) is fixedly arranged on the push rod (832) main body, the rotating shaft (84) is rotatably connected with the mounting plate (81), the rotating shaft (84) is perpendicular to the mounting plate (81), and a first torsion spring (85) for forcing the axis of the electric push rod (83) to be parallel to the scraper (43) is sleeved on the rotating shaft (84); a cylinder (86) is vertically and fixedly arranged at the output end of the push rod (832), the pushing piece (82) is provided with an arc-shaped groove (822) matched with the cylinder (86), the cylinder (86) is inserted with the arc-shaped groove (822) along the axial direction of the cylinder (86), and the cylinder (86) is sleeved with a second torsion spring (87) for forcing the notch of the arc-shaped groove (822) of the pushing piece (82) to face the length direction of the push rod (832); a straight handle (73) is vertically and fixedly arranged on one side, away from the two vertical plates (72), of the transverse plate (71) of the scraping piece (7), and a notch (821) for the straight handle (73) to abut against is arranged on one side, away from the arc-shaped groove (822), of the pushing piece (82).
2. The asphalt noise reduction pavement construction method according to claim 1, characterized in that: magnets (76) are fixedly arranged on the outer sides of the vertical plates (72) of the two scraping pieces (7), and the scraping plates (43) are made of steel materials.
3. The asphalt noise reduction pavement construction method according to claim 1, characterized in that: one side, far away from the transverse plate (71), of each of the two vertical plates (72) is provided with a folded edge (721), the two folded edges (721) gradually approach each other along the direction far away from the transverse plate (71), avoidance chamfers (431) for avoiding the two folded edges (721) are arranged on two opposite sides of the scraper (43), and the inner side faces of the folded edges (721) are abutted to the surfaces of the avoidance chamfers (431).
4. The asphalt noise reduction pavement construction method according to claim 1, characterized in that: the number of the straight handles (73) is two, the two straight handles (73) are respectively abutted against the two notches (821), a connecting plate (74) is jointly connected between the two straight handles (73), and a reinforcing plate (75) is vertically and fixedly arranged on the surface of the connecting plate (74).
5. The asphalt noise reduction pavement construction method according to claim 1, characterized in that: two opposite sides of the vertical plate (72) are respectively provided with a guide surface (722), and a first sharp angle (723) is formed between the guide surfaces (722) and the inner side surfaces of the vertical plates (72).
6. The asphalt noise reduction pavement construction method according to claim 5, characterized in that: and two opposite sides of each vertical plate (72) are respectively provided with a groove (724), the grooves (724) are positioned on the outer side surfaces of the vertical plates (72) and penetrate through the two side surfaces, parallel to the transverse plate (71), of the vertical plates (72), and a second sharp corner (725) is formed between the groove wall of each groove (724) close to the first sharp corner (723) and the guide surface (722).
7. The asphalt noise reduction pavement construction method according to claim 1, characterized in that: a steel wire rope (9) is arranged on one side, away from the transverse plate (71), of the scraper (43), and the scraper (43) scrapes the material carrying plate (41) through the steel wire rope (9); wire rope (9) orientation the length direction of scraper blade (43), scraper blade (43) are kept away from one side of diaphragm (71) is equipped with dodges groove (432), dodge groove (432) and run through the both ends face of scraper blade (43), wire rope (9) part is located dodge in groove (432), the both ends of wire rope (9) are equipped with tightening piece (10).
8. The asphalt noise reduction pavement construction method according to claim 7, characterized in that: tightening piece (10) include two swivel nuts (101), the both ends of scraper blade (43) are equipped with two screw holes (433) respectively, two swivel nut (101) with screw hole (433) threaded connection at scraper blade (43) both ends, the axis of swivel nut (101) with the length direction of scraper blade (43) is parallel, screw hole (433) with dodge groove (432) intercommunication, the tip of wire rope (9) passes swivel nut (101) and have set firmly lug (91), lug (91) butt the outer terminal surface of swivel nut (101).
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| CN202110424963.4A CN113235347B (en) | 2021-04-20 | 2021-04-20 | Asphalt noise reduction pavement construction method |
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| CN202110424963.4A CN113235347B (en) | 2021-04-20 | 2021-04-20 | Asphalt noise reduction pavement construction method |
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|---|---|---|---|---|
| CN102134830A (en) * | 2010-01-25 | 2011-07-27 | 沃尔沃建筑设备公司 | Conveyor assembly for an asphalt paving machine and an asphalt paving machine |
| CN107761520A (en) * | 2017-10-26 | 2018-03-06 | 雨发建设集团有限公司 | Cast asphalt paver and its distribution device |
| CN210288031U (en) * | 2019-05-22 | 2020-04-10 | 四川省同瑞达建设工程有限公司 | Asphalt concrete paver |
| CN111395108A (en) * | 2020-04-18 | 2020-07-10 | 李文革 | Multi-functional road surface equipment of laying for building |
| CN211395256U (en) * | 2019-11-23 | 2020-09-01 | 四川宝鑫建设有限公司 | Asphalt paving machine convenient to clearance road surface |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120076582A1 (en) * | 2010-09-28 | 2012-03-29 | Steve Jeffers | Cleaning links for conveyor chain |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134830A (en) * | 2010-01-25 | 2011-07-27 | 沃尔沃建筑设备公司 | Conveyor assembly for an asphalt paving machine and an asphalt paving machine |
| CN107761520A (en) * | 2017-10-26 | 2018-03-06 | 雨发建设集团有限公司 | Cast asphalt paver and its distribution device |
| CN210288031U (en) * | 2019-05-22 | 2020-04-10 | 四川省同瑞达建设工程有限公司 | Asphalt concrete paver |
| CN211395256U (en) * | 2019-11-23 | 2020-09-01 | 四川宝鑫建设有限公司 | Asphalt paving machine convenient to clearance road surface |
| CN111395108A (en) * | 2020-04-18 | 2020-07-10 | 李文革 | Multi-functional road surface equipment of laying for building |
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