CN111074740A - Waterless dust collection pavement joint cutting device - Google Patents
Waterless dust collection pavement joint cutting device Download PDFInfo
- Publication number
- CN111074740A CN111074740A CN201911333998.6A CN201911333998A CN111074740A CN 111074740 A CN111074740 A CN 111074740A CN 201911333998 A CN201911333998 A CN 201911333998A CN 111074740 A CN111074740 A CN 111074740A
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- Prior art keywords
- dust
- cover
- cutting
- communicated
- cutting wheel
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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
- E01C23/09—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0906—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
- E01C23/0926—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
- E01C23/0933—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
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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
- E01C23/09—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/096—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 forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating and filling
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a waterless dust-collecting pavement joint-cutting device, which comprises a vehicle body, a cutting wheel, a cutting motor and a lifting mechanism, wherein the cutting wheel is arranged on the vehicle body; the outer side of the cutting wheel is sleeved with a dust cover, the right side of the dust cover is communicated with the dust cover, the integrated cover is communicated with an air inducing barrel, the blade wheel is nested in the air inducing barrel, and the air inducing barrel is communicated with a cyclone settling barrel through a hose. The dust collector is provided with the dust collection cover, the air draft tube linked with the cutting wheel and the cyclone sedimentation tube, so that dust generated by cutting is synchronously sucked, collected and settled; the dust collection device is provided with the air blowing piston cylinder which is arranged opposite to the dust collection cover and is synchronously linked with the cutting wheel through the crank slider mechanism, dust is blown by introducing airflow generated by external air, the dust collection effect is improved, and meanwhile, the cutting wheel is cooled, so that the service life of the cutting wheel is ensured; be equipped with the ripple cover during through, avoid the dust to spill over from the dust cover.
Description
Technical Field
The invention relates to the field of road construction engineering, in particular to a water-free dust-collecting pavement joint cutting device.
Background
Road joint-cutting is common construction operation among the road engineering, and traditional joint-cutting machine adopts the mode of water spray dust fall, subsides the dust that the cutting wheel produced, avoids dust pollution, but can waste a large amount of water when adopting the water dust fall, and water and dust mix simultaneously and produce mud, still can flow into in the gap that has just cut when polluting the operation environment, influence the filling of follow-up gap filler.
The application provides a no water collection dirt road surface joint-cutting device adopts anhydrous mode to realize the synchronous collection of dust.
Disclosure of Invention
The present invention aims at providing one kind of no-water dust collecting road surface cutting and cutting device to solve the problems of the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a waterless dust-collecting pavement joint-cutting device comprises a vehicle body, a cutting wheel, a cutting motor and a lifting mechanism; a dust cover is sleeved outside the cutting wheel, and the right side of the dust cover is communicated with a dust collection cover; the integrated cover is communicated with an air draft tube, blade wheels are nested in the air draft tube, and the air draft tube is communicated with a cyclone sedimentation tube through a hose.
As a further scheme of the invention: the cutting wheel is connected with an output shaft of a cutting motor through a transmission shaft, the blade wheel is connected with the transmission shaft through a first rotating shaft and a first belt, and the air guide cylinder is fixedly connected with a lifting plate.
As a further scheme of the invention: the lower end of the cyclone settling cylinder is communicated with a collecting box, and a drawer box which can be pulled and moved is nested in the collecting box.
As a further scheme of the invention: the utility model discloses a protection casing, including protection casing lower extreme fixedly connected with ripple cover, ripple cover lower extreme fixedly connected with horizontal rectangle frame, horizontal rectangle frame level sets up, and the terminal surface nestification has the ball that is circumference and distributes under the horizontal rectangle frame.
As a further scheme of the invention: the utility model discloses a safety protection casing, including protection casing fixedly connected with lifter plate, cutting motor and induced draft tube, lifter plate upper end is connected with elevating system, elevating system include with lifter plate fixed connection's crane, the crane run through automobile body upper portion and with automobile body upper portion sliding connection, the crane runs through and threaded connection has the lead screw, the lead screw has step motor's output shaft through the coupling joint, the handrail department of automobile body is equipped with flush mounting plate of switch.
As a further scheme of the invention: the lifting plate is fixedly connected with sliding blocks at two ends, the vehicle body is provided with a vertical sliding groove matched with the sliding blocks, and the sliding blocks are nested in the vertical sliding groove.
As a further scheme of the invention: the left side of the protective cover is communicated with a blast piston cylinder through an air inlet pipe, a first one-way valve is arranged at the communication position of the blast piston cylinder and the air inlet pipe, the blast piston cylinder is communicated with an exhaust pipe, a second one-way valve is arranged at the communication position of the exhaust pipe and the blast piston cylinder, the exhaust pipe is communicated with the external atmosphere, and the upper end of the exhaust pipe is communicated with a spherical dustproof net; a piston column is nested in the air blowing piston cylinder, and the piston column is connected with a crank slider mechanism for driving the piston column to reciprocate through a connecting rod.
As a further scheme of the invention: slider-crank mechanism includes the carousel, fixedly connected with eccentric post on the carousel, and eccentric post cover is equipped with removes the frame, removes frame and connecting rod fixed connection, and the movable block is the rectangle frame of vertical setting, and the carousel is connected through second pivot and dust cover outer wall rotation, and the second pivot is connected with the transmission shaft through the second belt.
Compared with the prior art, the invention has the beneficial effects that: the dust collector is provided with the dust collection cover, the air draft tube linked with the cutting wheel and the cyclone sedimentation tube, so that dust generated by cutting is synchronously sucked, collected and settled; the drawer box is arranged, so that dust is convenient to clean; the dust collection device is provided with the air blowing piston cylinder which is arranged opposite to the dust collection cover and is synchronously linked with the cutting wheel through the crank slider mechanism, dust is blown by introducing airflow generated by external air, the dust collection effect is improved, and meanwhile, the cutting wheel is cooled, so that the service life of the cutting wheel is ensured; be equipped with the ripple cover during through, avoid the dust to spill over from the dust cover, simultaneously through being equipped with the horizontal rectangle frame that terminal surface nestification has the ball down, conveniently remove the ripple cover, guarantee sealed effect.
Drawings
FIG. 1 is a schematic view of the internal structure of a water-free dust-collecting pavement slitting device;
FIG. 2 is a schematic top view of a blower piston cylinder in a road surface seam cutting device without water and dust collection;
fig. 3 is a perspective view of a horizontal rectangular frame in the road surface seam cutting device without water and dust collection.
In the figure: 1-a vehicle body; 2-a cutting wheel; 3-a dust cover; 4-collecting cover; 5-a draught tube; 6-a vane wheel; 7-a hose; 8-cyclone dust removal cylinder; 9-a collection box; 10-a drawer box; 11-a drive shaft; 12-a cutting motor; 13-a lifter plate; 14-a first shaft; 15-a first belt; 16-a blower piston cylinder; 17-an exhaust pipe; 18-a piston column; 19-a connecting rod; 20-a slider-crank mechanism; 21-a turntable; 22-eccentric column; 23-moving the frame; 24-a second shaft; 25-a protective cover; 26-a second belt; 27-a slide block; 28-a lifting frame; 29-a screw rod; 30-a lifting motor; 31-horizontal rectangular frame; 32-a bellows; 33-balls.
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 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.
Example 1
Referring to fig. 1-3, in an embodiment of the present invention, a water-free dust-collecting pavement joint-cutting device includes a vehicle body 1, a cutting wheel 2, a cutting motor 12, and a lifting mechanism; the dust cover 3 is sleeved on the outer side of the cutting wheel 2, the cutting wheel 2 is connected with an output shaft of a cutting motor 12 through a transmission shaft 11, the cutting motor 12 drives the cutting wheel 2 to rotate to cut the road surface, dust generated by cutting is retained in the dust cover 3, the right side of the dust cover 3 is communicated with a dust collection cover 4, an arc-shaped opening is formed in the communication position of the dust collection cover 4 and the dust cover 3, and the dust collection effect is improved; the integrated cover 4 is communicated with an air draft tube 5, a blade wheel 6 is nested in the air draft tube 5, the blade wheel 6 is connected with a transmission shaft 11 through a first rotating shaft 14 and a first belt 15, the air draft tube 5 sucks dust in the dust cover 3 and the dust cover 4, and the air draft tube 5 is fixedly connected with a lifting plate 13; the air inducing barrel 5 is communicated with a cyclone settling barrel 8 through a hose 7, the air inducing barrel 6 blows dust into the cyclone settling barrel 8 through the hose 7, the hose 7 is tangentially communicated with the cyclone settling barrel 8, so that cyclone flow is formed in the cyclone settling barrel 8 conveniently, centrifugal settling of the dust is accelerated, and the cyclone settling barrel 8 is fixedly connected with the vehicle body 1; the lower end of the cyclone settling cylinder 8 is communicated with a collecting box 9, a drawer box 10 which can be pulled and moved is nested in the collecting box 9, and dust can be conveniently cleaned in a centralized mode by pulling out the drawer box 10.
In order to avoid the dust that the cutting produced to spill over from protection casing 3, 3 lower extreme fixed connection of protection casing has ripple cover 32, ripple cover 32 lower extreme fixed connection has horizontal rectangle frame 31, horizontal rectangle frame 31 level sets up, and the terminal surface nestification has the ball 33 that is circumference and distributes under the horizontal rectangle frame 31, and ball 33 and the road surface butt that waits to cut enclose the fender to 3 below spaces of protection casing, avoid the dust to spill over the pollution operational environment and threaten the workman healthy.
In order to realize the change of the cutting depth, the protective cover 3 is fixedly connected with a lifting plate 13, the cutting motor 12 and the air inducing cylinder 6 are both fixedly connected with the lifting plate 13, the upper end of the lifting plate 13 is connected with a lifting mechanism, the lifting mechanism comprises a lifting frame 28 fixedly connected with the lifting plate 13, the lifting frame 28 penetrates through the upper part of the vehicle body 1 and is in sliding connection with the upper part of the vehicle body 1, the lifting frame 28 penetrates through and is in threaded connection with a lead screw 29, the lead screw 29 is connected with an output shaft of a stepping motor 30 through a coupler, specifically, the stepping motor 30 drives the lead screw 29 to rotate forward and backward so as to drive the lifting frame 28 and the lifting plate 13 to move up and down, the cutting depth is changed and convenient to adjust, a; in order to improve the lifting stability of the lifting plate 13, the two ends of the lifting plate 13 are fixedly connected with the sliding blocks 27, the vehicle body 1 is provided with a vertical sliding groove matched with the sliding blocks 27, and the sliding blocks 27 are embedded in the vertical sliding groove, so that the lifting stability of the lifting plate 13 is improved.
Example 2
This example differs from example 1 in that: in order to improve the dust collection effect, the left side of the protective cover 2 is communicated with a blast piston cylinder 16 through an air inlet pipe, a first one-way valve is arranged at the communication position of the blast piston cylinder 16 and the air inlet pipe, the first one-way valve prevents the gas of the dust cover 2 from entering the blast piston cylinder 16, the blast piston cylinder 16 is communicated with an exhaust pipe 17, a second one-way valve is arranged at the communication position of the exhaust pipe 17 and the blast piston cylinder 16, the second one-way valve prevents the airflow from flowing back to the blast piston cylinder 16, the exhaust pipe 17 is communicated with the external atmosphere, and the upper end of the exhaust pipe 17 is communicated with a spherical dust screen to prevent the dust from entering the blast; a piston column 18 is embedded in the blast piston cylinder 16, the piston column 18 is connected with a crank slider mechanism 20 for driving the piston column 18 to reciprocate through a connecting rod 19, the crank slider mechanism comprises a rotary table 21, an eccentric column 22 is fixedly connected to the rotary table 21, a moving frame 23 is sleeved on the eccentric column 22, the moving frame 23 is fixedly connected with the connecting rod 19, the moving frame 23 is a vertically arranged rectangular frame, the rotary table 21 is rotatably connected with the outer wall of the dust cover 3 through a second rotating shaft 24, and the second rotating shaft 24 is connected with the transmission shaft 11 through a second belt 26; specifically, when the cutting wheel 2 rotates, the transmission shaft 11 drives the slider-crank mechanism 20 to operate through the second belt 26 and the second rotating shaft 24, the slider-crank mechanism 20 drives the piston post 18 to reciprocate through the connecting rod 19, the air blowing piston cylinder 16 sucks external air and injects the air into the dust cover 3, the air inlet pipe is arranged opposite to the dust collection cover 4, and the air flow generated by the air blowing piston cylinder 16 blows dust to the dust collection cover 4, so that the dust collection effect is improved; simultaneously, dispel the heat to cutting wheel 2 through the continuous air current of introducing from the outside, reached the cooling effect, avoid the overheated damage of cutting wheel 2, guarantee cutting wheel 2's life.
The following are specifically mentioned: the cutting wheel, the cutting motor and the lifting mechanism are in the prior art; the novel point of the application is that the dust hood, the air draft tube and the air blast piston tube which are linked with the cutting wheel, the cyclone sedimentation tube, the drawer box, the corrugated hood and the horizontal rectangular frame of which the lower end surface is nested with the ball are innovative points; dust generated by cutting is synchronously sucked, collected and settled through a dust collection cover, an air draft tube linked with a cutting wheel and a cyclone settling tube; the drawer box is arranged, so that dust is convenient to clean; the dust collection device is provided with the air blowing piston cylinder which is arranged opposite to the dust collection cover and is synchronously linked with the cutting wheel through the crank slider mechanism, dust is blown by introducing airflow generated by external air, the dust collection effect is improved, and meanwhile, the cutting wheel is cooled, so that the service life of the cutting wheel is ensured; be equipped with the ripple cover during through, avoid the dust to spill over from the dust cover, simultaneously through being equipped with the horizontal rectangle frame that terminal surface nestification has the ball down, conveniently remove the ripple cover, guarantee sealed effect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A waterless dust-collecting pavement joint-cutting device comprises a vehicle body (1), a cutting wheel (2), a cutting motor (12) and a lifting mechanism; the cutting machine is characterized in that a dust cover (3) is sleeved on the outer side of the cutting wheel (2), and the right side of the dust cover (3) is communicated with a dust collection cover (4); the integrated cover (4) is communicated with an air draft tube (5), the blade wheel (6) is nested in the air draft tube (5), and the air draft tube (5) is communicated with a cyclone sedimentation tube (8) through a hose (7).
2. The water-free dust-collecting pavement slitting device as claimed in claim 1, wherein the cutting wheel (2) is connected with an output shaft of a cutting motor (12) through a transmission shaft (11), the impeller (6) is connected with the transmission shaft (11) through a first rotating shaft (14) and a first belt (15), and the induced draft tube (5) is fixedly connected with a lifting plate (13).
3. The waterless dust-collecting pavement slitting device as recited in claim 1, wherein the lower end of the cyclone settling drum (8) is communicated with a collection box (9), and a drawer box (10) which can be pulled and moved is nested in the collection box (9).
4. The waterless dust-collecting pavement slitting device as claimed in claim 1, wherein the lower end of the protection cover (3) is fixedly connected with a corrugated cover (32), the lower end of the corrugated cover (32) is fixedly connected with a horizontal rectangular frame (31), the horizontal rectangular frame (31) is horizontally arranged, and the lower end face of the horizontal rectangular frame (31) is nested with balls (33) which are circumferentially distributed.
5. The waterless dust collection pavement slitting device as claimed in claim 1, wherein the protective cover (3) is fixedly connected with a lifting plate (13), the cutting motor (12) and the air inducing duct (6) are both fixedly connected with the lifting plate (13), the upper end of the lifting plate (13) is connected with a lifting mechanism, the lifting mechanism comprises a lifting frame (28) fixedly connected with the lifting plate (13), the lifting frame (28) penetrates through the upper part of the vehicle body (1) and is slidably connected with the upper part of the vehicle body (1), the lifting frame (28) penetrates through and is in threaded connection with a screw rod (29), the screw rod (29) is connected with an output shaft of a stepping motor (30) through a coupler, and a switch panel is arranged at a handrail of the vehicle body (1).
6. The water-free dust-collecting pavement slitting device as claimed in claim 5, wherein the two ends of the lifting plate (13) are fixedly connected with sliding blocks (27), the vehicle body (1) is provided with vertical sliding grooves matched with the sliding blocks (27), and the sliding blocks (27) are nested in the vertical sliding grooves.
7. The water-free dust collection pavement slitting device as claimed in claim 2, wherein the left side of the protective hood (2) is communicated with a blowing piston cylinder (16) through an air inlet pipe, a first one-way valve is arranged at the communication position of the blowing piston cylinder (16) and the air inlet pipe, the blowing piston cylinder (16) is communicated with an exhaust pipe (17), a second one-way valve is arranged at the communication position of the exhaust pipe (17) and the blowing piston cylinder (16), the exhaust pipe (17) is communicated with the external atmosphere, and the upper end of the exhaust pipe (17) is communicated with a spherical dust screen; a piston column (18) is nested in the air blowing piston cylinder (16), and the piston column (18) is connected with a crank slider mechanism (20) which drives the piston column (18) to reciprocate through a connecting rod (19).
8. The water-free dust-collecting pavement slitting device as claimed in claim 7, wherein the slider-crank mechanism (20) comprises a rotary table (21), an eccentric column (22) is fixedly connected to the rotary table (21), a moving frame (23) is sleeved on the eccentric column (22), the moving frame (23) is fixedly connected to the connecting rod (19), the moving frame (23) is a vertically-arranged rectangular frame, the rotary table (21) is rotatably connected to the outer wall of the dust cover (3) through a second rotating shaft (24), and the second rotating shaft (24) is connected to the transmission shaft (11) through a second belt (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911333998.6A CN111074740A (en) | 2019-12-23 | 2019-12-23 | Waterless dust collection pavement joint cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911333998.6A CN111074740A (en) | 2019-12-23 | 2019-12-23 | Waterless dust collection pavement joint cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111074740A true CN111074740A (en) | 2020-04-28 |
Family
ID=70316697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911333998.6A Withdrawn CN111074740A (en) | 2019-12-23 | 2019-12-23 | Waterless dust collection pavement joint cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111074740A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536922A (en) * | 2020-12-08 | 2021-03-23 | 上海金鹿建设(集团)有限公司 | Concrete cutting equipment and cutting method |
| CN113882226A (en) * | 2021-09-23 | 2022-01-04 | 宁波市天马生态建设有限公司 | Joint cutting equipment for highway construction and use method thereof |
| CN114508028A (en) * | 2022-03-01 | 2022-05-17 | 安徽重标建筑工程有限公司 | Construction method for modifying cement pavement with asphalt concrete |
-
2019
- 2019-12-23 CN CN201911333998.6A patent/CN111074740A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536922A (en) * | 2020-12-08 | 2021-03-23 | 上海金鹿建设(集团)有限公司 | Concrete cutting equipment and cutting method |
| CN113882226A (en) * | 2021-09-23 | 2022-01-04 | 宁波市天马生态建设有限公司 | Joint cutting equipment for highway construction and use method thereof |
| CN113882226B (en) * | 2021-09-23 | 2022-10-21 | 宁波市天马生态建设有限公司 | Joint cutting equipment for highway construction and use method thereof |
| CN114508028A (en) * | 2022-03-01 | 2022-05-17 | 安徽重标建筑工程有限公司 | Construction method for modifying cement pavement with asphalt concrete |
| CN114508028B (en) * | 2022-03-01 | 2023-10-03 | 安徽重标建筑工程有限公司 | Construction method for modifying cement pavement by asphalt concrete |
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Application publication date: 20200428 |
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| WW01 | Invention patent application withdrawn after publication |