CN110284404A - A kind of road asphalt lying device and its construction method with hydraulic adjustment device - Google Patents
A kind of road asphalt lying device and its construction method with hydraulic adjustment device Download PDFInfo
- Publication number
- CN110284404A CN110284404A CN201910509092.9A CN201910509092A CN110284404A CN 110284404 A CN110284404 A CN 110284404A CN 201910509092 A CN201910509092 A CN 201910509092A CN 110284404 A CN110284404 A CN 110284404A
- Authority
- CN
- China
- Prior art keywords
- laying
- bituminous
- road
- adjustment device
- homocline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 title abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 10
- 230000002146 bilateral effect Effects 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000003892 spreading Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- E01C19/185—Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect for both depositing and spreading-out or striking-off the deposited mixture
Abstract
The invention discloses a kind of road asphalt lying device with hydraulic adjustment device, the laying arm front underside bilateral symmetry riveting is provided with two groups of turning sets, and it is assigned in turning set and is provided with shaft A, the bottom the shaft A, which is all connected with, is provided with laying set, and it is laid between set upper face center and laying arm lower surface and hydraulic column is equipped with by articulated connection, the bilateral symmetry welding of laying set front is provided with two groups of pressing framves, and pressing frame front end is assigned by screw thread and is provided with threaded post, the screw thread column bottom is equipped with connector sleeve by bearing, the construction method of the invention also discloses a kind of road asphalt lying device with hydraulic adjustment device, it include: step 1: bituminous concrete production, step 2: bituminous concrete filling, step 3: the leveling of bituminous pavement, step 4: the maintenance of bituminous pavement.
Description
Technical field
The present invention relates to asphalt pavement construction domain is used for, specially a kind of road asphalt with hydraulic adjustment device paves dress
It sets and its construction method.
Background technique
Bituminous pavement refers to various types of road surfaces that bitumen for road use material making is mixed in mineral material.Pitch combines
Material, which improves to pave the way, resists the ability of driving and the damage of natural cause road pavement with pellet, and evenness of road surface is made to lack dirt, waterproof, warp
It is durable long.Therefore, bituminous pavement is a kind of high class pavement being the most widely used in road construction.
It is often suffered from the drawback that in the work progress to bituminous pavement
1. in the prior art spread out and put on machine, range is spread out and put on to bituminous pavement and is fixed, road surface biggish for width needs anti-
It spreads out and puts on again, it is lower to spread out and put on efficiency；
2. pitch relies solely on gravity during tentatively spreading out and putting on and shakeouts on the ground, need to lead to before asphalt temperature reduction
It crosses road roller to flatten bituminous pavement, execution conditions require harshness, and the pressure road time is shorter, influence engineering efficiency.
3. pitch discharging is easy to appear the phenomenon of pitch unevenness in the prior art during spreading out and putting on, later period pressing is quite relied on
It just can guarantee evenness of road surface.
For this purpose, we have proposed a kind of road asphalt lying device with hydraulic adjustment device and its construction method are for solving
Certainly above-mentioned drawback.
Summary of the invention
The purpose of the present invention is to provide a kind of road asphalt lying device and its construction method with hydraulic adjustment device,
To solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of road asphalt booth with hydraulic adjustment device
Mat formation and set and its construction method, including laying arm, the laying arm front underside bilateral symmetry riveting is provided with two groups of rotations
Set, and assigned in turning set and be provided with shaft A, the bottom the shaft A, which is all connected with, is provided with laying set, and is laid with set upper surface
Hydraulic column, the bilateral symmetry welding setting of laying set front are equipped with by articulated connection between center and laying arm lower surface
There are two groups of pressing framves, and pressing frame front end is assigned by screw thread and is provided with threaded post, the screw thread column bottom passes through bearing and installs
There is connector sleeve, and connector sleeve assigns setting in locating back upper surface, laying set interior sidewall surface center, which is assigned, is provided with drive
Dynamic motor, and driving motor is provided with homocline set by the way that shaft is online, assigns between the homocline set and laying set outer end wall surface
It is provided with feeding pipe axis, and feeding pipe axis outer end is equipped with swivel, the homocline set inner wall welding setting by bearing
There is auger piece.
Preferably, equidistant uniform ring is around offering several groups discharge hole on the curved surface of homocline set, and homocline covers outer end
It is mounted by means of screws with feeding pipe axis, is provided with bearing between feeding pipe axis and laying set wall surface.
Preferably, the link block for flattening the welding of frame front end and being provided with rectangle, and link block upper and lower surface middle thereof
Threaded hole is offered, and threaded post is arranged through link block, fitting is provided with nut above threaded post.
Preferably, the hydraulic column both ends have been connected by screw to hinged block, are laid under set upper face center and laying arm
It is provided with the shaft to match with hinged block between surface, and is laid with set when hydraulic column full extension and mutually hangs down with laying arm
Directly.
A kind of construction method of the road asphalt lying device with hydraulic adjustment device comprising the steps of:
Step 1: bituminous concrete production, firstly, pressing content of coarse aggregate 69%~78%, miberal powder 6%~10%, oilstone
Than 5% production bituminous concrete；
Step 2: bituminous concrete filling, by the bituminous concrete after the completion of heating through pipeline into the device,
Asphaltic concrete mixer discharge port is connected to the swivel on the device by pipeline, to carrying out filling drip in the device
Paving concrete pavement operation is carried out using the device after green concrete；
Step 3: the leveling of bituminous pavement carries out further compacting leveling to bituminous pavement by equipment such as road rollers
Afterwards, accelerate the cooling condensation of pitch to bituminous pavement surface sprinkling cooling water；
Step 4: the maintenance of bituminous pavement accelerates the cooling condensation of pitch to bituminous pavement surface sprinkling cooling water, to road surface
Completion bituminous pavement is made after hardening reaches standard.
Compared with prior art, the beneficial effects of the present invention are: structure of the invention setting rationally, functional, have with
Lower advantage:
1. driving motor of the present invention drives homocline set to carry out rotation and carries out assistant conveyance to pitch using auger piece, make to drip
After blueness is sufficient filling with homocline set inside, the discharge hole discharge that pitch is opened up from homocline set after by certain pressure, and the wide bed sets set
Bottom opening is spread out and put on to road surface, spreads out and puts on bituminous pavement more uniform.
2. the two groups of laying sets in hydraulic column stretching, extension control left and right of the present invention are rotated along shaft A, thus two groups of layings of control
The spacing between outer end is covered, width range is spread out and put on to pitch and facilitate from main modulation and adapt to a variety of width road surfaces progress once
The asphalt paving of property.
3. the present invention is laid with after set completes to spread out and put on after pitch using the self weight of locating back lower surface and the device to spreading out and putting on
Pitch is flattened for the first time, improves Asphalt Pavement Surface Evenness to improve road surface post-production maintenance quality.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the diagrammatic cross-section that set is laid in Fig. 1；
Fig. 3 is partial enlargement diagram at A in Fig. 2.
In figure: 1 laying arm, 2 turning sets, 3 shaft A, 4 are laid with set, 5 hydraulic columns, 6 pressing framves, 7 threaded posts, 8 connector sleeves, 9
Locating back, 10 driving motors, 11 homocline sets, 12 auger pieces, 13 feeding pipe axis, 14 swivels.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It please refers to Fig.1 to Fig.3, the present invention provides a kind of technical solution: a kind of road asphalt booth with hydraulic adjustment device
Mat formation and set and its construction method, including laying arm 1, laying arm 1 front underside bilateral symmetry riveting is provided with two groups of turning sets
2, and assigned in turning set 2 and be provided with shaft A3, the bottom shaft A3, which is all connected with, is provided with laying set 4, and is laid with 4 upper surfaces of set
Hydraulic column 5 is equipped with by articulated connection between center and 1 lower surface of laying arm, 5 both ends of hydraulic column are connected by screw to hinged
Block is connect, is laid between 4 upper face centers of set and 1 lower surface of laying arm and is provided with the shaft to match with hinged block, and is hydraulic
Set 4 is laid with when 5 full extension of column to be mutually perpendicular to laying arm 1.Two groups of control left and right, 4 edge of laying set is stretched by hydraulic column 5 to turn
Axis A3 is rotated, so that two groups of layings of control cover the spacing between 4 outer ends, is spread out and put on width range to pitch and is carried out from homophony
It is whole.
The 4 front bilateral symmetry welding of laying set is provided with two groups of pressing framves 6, and pressing 6 front end of frame is assigned by screw thread and set
It is equipped with threaded post 7, flattens the link block that the welding of 6 front end of frame is provided with rectangle, and link block upper and lower surface middle thereof offers
Threaded hole, and threaded post 7 is arranged through link block, 7 top fitting of threaded post is provided with nut.Threaded post 7 is enterprising in pressing frame 6
Row rotates spacing between adjustment locating back 9 and bottom surface, utilizes 9 lower surface of locating back after laying set 4 is completed to spread out and put on pitch and is somebody's turn to do
The self weight of device flattens the pitch after spreading out and putting on for the first time.
7 bottom of threaded post is equipped with connector sleeve 8 by bearing, and connector sleeve 8 is assigned and is arranged in 9 upper surface of locating back,
4 interior sidewall surface centers of laying set, which are assigned, is provided with driving motor 10, and driving motor 10 is provided with homocline set by the way that shaft is online
11, equidistant uniform ring is around offering several groups discharge hole on the curved surface of homocline set 11, and homocline covers 11 outer ends and fixed by screw
Feeding pipe axis 13 is installed, is provided with bearing between feeding pipe axis 13 and laying 4 wall surfaces of set.
It is assigned between homocline set 11 and laying 4 outer end wall surfaces of set and is provided with feeding pipe axis 13, and 13 outer end of feeding pipe axis is logical
It crosses bearing and swivel 14 is installed, homocline covers the welding of 11 inner walls and is provided with auger piece 12.Driving motor 10 drives homocline set
11 carry out rotation and carry out assistant conveyance to pitch using auger piece 12, after so that pitch is sufficient filling with 11 inside of homocline set, pitch
The discharge hole discharge opened up from homocline set 11 after by certain pressure, and the wide bed sets 4 bottom openings of set and spreads out and puts on to road surface, makes to drip
Spread out and put on more uniform in green road surface.
A kind of construction method of the road asphalt lying device with hydraulic adjustment device comprising the steps of:
Step 1: bituminous concrete production, firstly, pressing content of coarse aggregate 69%~78%, miberal powder 6%~10%, oilstone
Than 5% production bituminous concrete；
Step 2: bituminous concrete filling, by the bituminous concrete after the completion of heating through pipeline into the device,
Asphaltic concrete mixer discharge port is connected to the swivel on the device by pipeline, to carrying out filling drip in the device
Paving concrete pavement operation is carried out using the device after green concrete；
Step 3: the leveling of bituminous pavement carries out further compacting leveling to bituminous pavement by equipment such as road rollers
Afterwards, accelerate the cooling condensation of pitch to bituminous pavement surface sprinkling cooling water；
Step 4: the maintenance of bituminous pavement accelerates the cooling condensation of pitch to bituminous pavement surface sprinkling cooling water, to road surface
Completion bituminous pavement is made after hardening reaches standard.
Working principle: pitch is connected to swivel 14 by pipeline, pitch is injected into homocline by feeding pipe axis 13
Inside set 11, drives homocline set 11 to carry out rotation by driving motor 10 and assistant conveyance is carried out to pitch using auger piece 12,
After so that pitch is sufficient filling with 11 inside of homocline set, the discharge hole discharge that pitch is opened up from homocline set 11 after by certain pressure, and
The wide bed sets 4 bottom openings of set and spreads out and puts on to road surface, spreads out and puts on bituminous pavement more uniform, stretches control left and right by hydraulic column 5
Two groups of laying sets 4 are rotated along shaft A3, so that two groups of layings of control cover the spacing between 4 outer ends, spread out and put on width to pitch
Range facilitate from main modulation and adapt to the disposable asphalt paving of a variety of width road surfaces progress, is flattening frame by threaded post 7
Spacing between rotation adjustment locating back 9 and bottom surface is carried out on 6, utilizes 9 lower surface of locating back after being laid with set 4 and completing to spread out and put on pitch
Self weight with the device flattens the pitch after spreading out and putting on for the first time, improves Asphalt Pavement Surface Evenness and adds to improve the road surface later period
Work maintenance quality.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of road asphalt lying device with hydraulic adjustment device, including laying arm (1), it is characterised in that: the laying
The bilateral symmetry riveting of arm (1) front underside is provided with two groups of turning sets (2), and assigns in turning set (2) and be provided with shaft A
(3), shaft A (3) bottom, which is all connected with, is provided with laying set (4), and is laid under set (4) upper face center and laying arm (1)
It is equipped with hydraulic column (5) between surface by articulated connection, laying set (4) the front bilateral symmetry welding is provided with two groups of pressures
Flatrack (6), and pressing frame (6) front end is assigned by screw thread and is provided with threaded post (7), threaded post (7) bottom passes through bearing
It is equipped with connector sleeve (8), and connector sleeve (8) assigns setting in locating back (9) upper surface, the laying covers (4) interior sidewall surface
Center, which is assigned, to be provided with driving motor (10), and driving motor (10) is provided with homocline set (11) by the way that shaft is online, described equal
It assigns and is provided with feeding pipe axis (13) between material set (11) and laying set (4) outer end wall surface, and feeding pipe axis (13) outer end passes through
Bearing is equipped with swivel (14), and homocline set (11) the inner wall welding is provided with auger piece (12).
2. a kind of road asphalt lying device with hydraulic adjustment device according to claim 1, it is characterised in that: described
Equidistant uniform ring is around offering several groups discharge hole on the curved surface of homocline set (11), and homocline set (11) outer end is fixed by screw
It is equipped with feeding pipe axis (13), is provided with bearing between feeding pipe axis (13) and laying set (4) wall surface.
3. a kind of road asphalt lying device with hydraulic adjustment device according to claim 1, it is characterised in that: described
The link block that the welding of frame (6) front end is provided with rectangle is flattened, and link block upper and lower surface middle thereof offers threaded hole, and spiral shell
Line column (7) is arranged through link block, and fitting is provided with nut above threaded post (7).
4. a kind of road asphalt lying device with hydraulic adjustment device according to claim 1, it is characterised in that: described
Hydraulic column (5) both ends have been connected by screw to hinged block, are laid between set (4) upper face center and laying arm (1) lower surface
It is provided with the shaft to match with hinged block, and is laid with set (4) when hydraulic column (5) full extension and is mutually perpendicular to laying arm (1).
5. a kind of a kind of road asphalt lying device with hydraulic adjustment device as described in claim 1-4 any one is applied
Work method, it is characterised in that: the processing flow of this product comprises the steps of:
Step 1: bituminous concrete production, firstly, pressing content of coarse aggregate 69%~78%, miberal powder 6%~10%, bitumen aggregate ratio 5%
Make bituminous concrete；
Step 2: bituminous concrete filling will drip the bituminous concrete after the completion of heating by pipeline into the device
Green concrete mixer discharge port is connected to the swivel on the device by pipeline, and to carrying out in the device, filling pitch is mixed
Paving concrete pavement operation is carried out using the device after solidifying soil；
Step 3: the leveling of bituminous pavement, after carrying out further compacting leveling to bituminous pavement by equipment such as road rollers, to
It sprays cooling water and accelerates the cooling condensation of pitch in bituminous pavement surface；
Step 4: the maintenance of bituminous pavement accelerates the cooling condensation of pitch to bituminous pavement surface sprinkling cooling water, hardens to road surface
Completion bituminous pavement is made after reaching standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910509092.9A CN110284404A (en) | 2019-06-13 | 2019-06-13 | A kind of road asphalt lying device and its construction method with hydraulic adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910509092.9A CN110284404A (en) | 2019-06-13 | 2019-06-13 | A kind of road asphalt lying device and its construction method with hydraulic adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110284404A true CN110284404A (en) | 2019-09-27 |
Family
ID=68004276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910509092.9A Pending CN110284404A (en) | 2019-06-13 | 2019-06-13 | A kind of road asphalt lying device and its construction method with hydraulic adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110284404A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB749866A (en) * | 1953-06-03 | 1956-06-06 | Barber Greene Co | Road surfacing machine |
| JPH0660608U (en) * | 1993-02-03 | 1994-08-23 | 範多機械株式会社 | Asphalt finisher hopper |
| EP1734190A1 (en) * | 2005-05-24 | 2006-12-20 | Hubert Nacken | Device for the treatment of road surfaces |
| US20090304446A1 (en) * | 2008-06-04 | 2009-12-10 | Kevin Pikuet | Tamper Assembly |
| CN201372402Y (en) * | 2009-01-20 | 2009-12-30 | 中国农业机械化科学研究院 | Asphalt mixture paving machine |
| US20170030030A1 (en) * | 2015-07-30 | 2017-02-02 | Caterpillar Paving Products Inc | Paving machine having production monitoring system |
| CN108532417A (en) * | 2018-06-07 | 2018-09-14 | 中建八局第二建设有限公司 | A kind of bituminous concrete paver |
| CN109371786A (en) * | 2018-10-19 | 2019-02-22 | 新疆路桥建设集团有限公司 | A kind of broken asphalt paving constructing device of highway |
| CN210561605U (en) * | 2019-06-13 | 2020-05-19 | 中建八局第二建设有限公司 | Road asphalt paving device with hydraulic adjusting device |
-
2019
- 2019-06-13 CN CN201910509092.9A patent/CN110284404A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB749866A (en) * | 1953-06-03 | 1956-06-06 | Barber Greene Co | Road surfacing machine |
| JPH0660608U (en) * | 1993-02-03 | 1994-08-23 | 範多機械株式会社 | Asphalt finisher hopper |
| EP1734190A1 (en) * | 2005-05-24 | 2006-12-20 | Hubert Nacken | Device for the treatment of road surfaces |
| US20090304446A1 (en) * | 2008-06-04 | 2009-12-10 | Kevin Pikuet | Tamper Assembly |
| CN201372402Y (en) * | 2009-01-20 | 2009-12-30 | 中国农业机械化科学研究院 | Asphalt mixture paving machine |
| US20170030030A1 (en) * | 2015-07-30 | 2017-02-02 | Caterpillar Paving Products Inc | Paving machine having production monitoring system |
| CN108532417A (en) * | 2018-06-07 | 2018-09-14 | 中建八局第二建设有限公司 | A kind of bituminous concrete paver |
| CN109371786A (en) * | 2018-10-19 | 2019-02-22 | 新疆路桥建设集团有限公司 | A kind of broken asphalt paving constructing device of highway |
| CN210561605U (en) * | 2019-06-13 | 2020-05-19 | 中建八局第二建设有限公司 | Road asphalt paving device with hydraulic adjusting device |
Non-Patent Citations (1)
| Title |
|---|
| 颜荣庆等: "现代工程机械液压与液力系统——基本原理.故障分析与排除", 人民交通出版社, pages: 315 - 316 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4765772A (en) | Method and apparatus for filling voids in recycled asphalt | |
| CN207685640U (en) | A kind of road asphalt laying apparatus for leveling | |
| CN209128858U (en) | A kind of municipal works road maintenance device | |
| CN205839551U (en) | A kind of adjustable bituminous distributor of nozzle height | |
| CN207942564U (en) | A kind of novel concrete stirring instrument | |
| CN108316098A (en) | It is a kind of that there is heating and nozzle height the bituminous distributor of function is adjusted | |
| CN113215888B (en) | Construction method and flattening device for road widening transition section | |
| CN110846983A (en) | Be used for highway construction mechanized pitch device of paving | |
| CN110284404A (en) | A kind of road asphalt lying device and its construction method with hydraulic adjustment device | |
| CN109577139A (en) | A kind of concrete pavement spreader based on levelling filling | |
| CN206800147U (en) | A kind of maintaining road pouring can | |
| CN113756145A (en) | Highway engineering construction method and system | |
| CN105961362A (en) | Multifunctional intelligent management equipment and method for tea orchard | |
| CN103233405B (en) | Old-new bituminous pavement binder course and application thereof | |
| CN107476159A (en) | Deliver directly method modified SBS asphalt pavement construction engineering method | |
| CN206928167U (en) | Road smoothing device with mending concrete basal plane | |
| CN207714090U (en) | A kind of bituminous paving embedding repair apparatus | |
| CN216338933U (en) | Highway subgrade maintenance road surface cementation of fissures device | |
| CN115637856A (en) | Waterproof concrete slope roof pouring device convenient to build | |
| CN108342954A (en) | A kind of asphalt concrete pavement side mould | |
| CN205999755U (en) | A kind of high-effective concrete paver | |
| CN206308955U (en) | Stone material terrace makes somebody a mere figurehead pre- assembling structure | |
| CN206308964U (en) | The built on stilts prepackage slip casting consolidated structures of stone material terrace | |
| CN207210873U (en) | A kind of bituminous paving depression Defects Treatment structure | |
| CN108682259A (en) | A kind of energy-saving and emission-reduction based on water-bearing layer simulator and safety coal mining experiment porch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |