CN101168951A - Asphalt mixture regenerating heating stirring roller - Google Patents

Asphalt mixture regenerating heating stirring roller Download PDF

Info

Publication number
CN101168951A
CN101168951A CNA2007101950514A CN200710195051A CN101168951A CN 101168951 A CN101168951 A CN 101168951A CN A2007101950514 A CNA2007101950514 A CN A2007101950514A CN 200710195051 A CN200710195051 A CN 200710195051A CN 101168951 A CN101168951 A CN 101168951A
Authority
CN
China
Prior art keywords
cylinder
asphalt mixture
roller
burner
sifting barrel
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.)
Granted
Application number
CNA2007101950514A
Other languages
Chinese (zh)
Other versions
CN100570061C (en
Inventor
朱炳蔚
张航
彭长顺
王旭朗
牛润涛
王召瑞
闫树林
王宏义
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HENAN ROADY ROAD MACHINERY Co Inc
Original Assignee
HENAN ROADY ROAD MACHINERY Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HENAN ROADY ROAD MACHINERY Co Inc filed Critical HENAN ROADY ROAD MACHINERY Co Inc
Priority to CNB2007101950514A priority Critical patent/CN100570061C/en
Publication of CN101168951A publication Critical patent/CN101168951A/en
Application granted granted Critical
Publication of CN100570061C publication Critical patent/CN100570061C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Road Paving Machines (AREA)

Abstract

The invention discloses an asphalt mixture regenerative heating rod and mixing roller, and belongs to the concrete stirring technical field. The invention has a tilted roller supporting frame, a rolling ring, a roller and a roller driving device, wherein, the rolling ring is sleeved on the roller and supported by a rolling wheel arranged on the roller supporting frame, a burner is arranged at the lower end of the roller, a material outlet is arranged on the roller at the lower part of the burner, a material inlet is arranged at the other end of the roller, and a smoke outlet is arranged on the roller; wherein, an inner screening tube is sleeved inside the roller positioned at the material inlet end, and the inner screening tube is connected with the roller, the outer peripheral wall of the inner screening tube is composed of a screening mesh, a circular filtering mesh is sealed at the end part on the inner side of the inner screening tube, the material inlet is communicated with the inner screening tube, and an asphalt nozzle is arranged inside the roller positioned below the burner at the outlet end. The invention has compact and rational structure and high heat exchange efficiency, does not require secondary breakup of the waste asphalt mixture, can directly heat the block shape waste asphalt mixture for recycling; and the regenerated asphalt mixture can be directly utilized.

Description

Asphalt mixture regenerating heating stirring roller
Technical field
The invention belongs to concrete stirring technique field, be specifically related to a kind of asphalt mixture regenerating heating stirring roller.
Background technology
Flexible pavement is the main type of road, accounts for the 70-80% of pavement of road, along with wearing out gradually of pavement asphalt, cohesion and intensity descend gradually, finally can cause asphalt concrete pavement wheel paths to occur, wave, the crack, hole groove, phenomenon such as disperse, can not satisfy automotive safety, comfortable, economy is quick, travel require the time, will road pavement overhaul or reconstruct.Flexible pavement overhaul and the reconstruction process in will produce a large amount of waste and scraps, wherein waste asphalt mixture includes rubble, and the aged asphalt about sand and 3-4% is if no longer utilize it directly discarded, not only cause the waste of resource, also can become the groundwater pollution source.The prior art of utilizing for waste asphalt mixture generally is to adopt milling machine that the flexible pavement milling is granulated earlier and bulk, granular or block waste asphalt mixture being broken into could be by the regeneration of regeneration corollary equipment behind the granule again, this asphalt pavement regeneration mode, because granular through being broken into, cost is higher, and original grating is destroyed, powder increases, the part aggregate size reduces, thereby has to carry out re-using behind the sieve classification, has increased use cost greatly.
Summary of the invention
Above-mentioned defective at the prior art existence, it is reasonable that the object of the invention provides a kind of compact conformation, the heat exchanger effectiveness height, waste asphalt mixture need not pass through second-time breakage, can directly carry out thermal regeneration, the asphalt mixture regenerating heating stirring roller that the bituminous mixture after the regeneration can directly utilize to block waste asphalt mixture.
For achieving the above object, the technical solution used in the present invention is: this asphalt mixture regenerating heating stirring roller has the rolling stand of inclination, rolling ring, cylinder, drum drive, rolling ring is sleeved on the cylinder and by the roller on the rolling stand and supports, drum drive cooperates driving with rolling ring, cylinder be provided with burner than low side, the cylinder of burner bottom is provided with discharging opening, the other end of cylinder is provided with charging aperture, the cylinder on charging aperture top is provided with the outlet of cigarette wind, inner wall of rotary drum is provided with stirring vane, it is characterized in that: the cylinder that is positioned at feed inlet end is set with sifting barrel, interior sifting barrel is fixedlyed connected with cylinder, the periphery wall of sifting barrel is made of Screening Network in described, the medial end shutoff of interior sifting barrel has annular filter screen, described charging aperture is connected with interior sifting barrel, and the cylinder that is positioned at port of export burner below is provided with the pitch jet pipe.
The Screening Network of sifting barrel is made of three grades of Screening Networks from outside to inside in described, the aperture of outermost one-level Screening Network is 80mm * 80mm~110mm * 110mm, the aperture of the secondary Screening Network at middle part is 60mm * 60mm~80mm * 80mm, and the aperture of three grades of terminal Screening Networks is 40mm * 40mm~60mm * 60mm.
Be surrounded with profile of tooth lifting blade and spiral resistance material blade on the inner wall of rotary drum of described one-level Screening Network correspondence, be surrounded with on the inner wall of rotary drum of described secondary Screening Network correspondence and extricate from stock column more, the end of extricating from stock column extend in the interior sifting barrel more, is surrounded with the profile of tooth lifting blade on the inner wall of rotary drum of secondary Screening Network correspondence; Be surrounded with on the inner wall of rotary drum of described three grades of Screening Network correspondences and extricate from stock column more, in the end of extricating from stock column extend into more in the sifting barrel, on the inwall of the cylinder low side of three grades of Screening Network correspondences around the profile of tooth lifting blade is set.
The periphery of described burner flame area is provided with and hides the flame arc.
The discharge end of described cylinder is provided with feed box, and the bottom that is positioned at feed box is provided with agitator.
The cigarette wind outlet of described cylinder is connected with the airduct that flashes back, and the outlet of the airduct that flashes back is connected with the air intake of burner.
Adopt the beneficial effect of technique scheme to be: this asphalt mixture regenerating heating stirring roller is equipped with sifting barrel at the cylinder fixed cover that is positioned at feed inlet end, the periphery wall of interior sifting barrel is made of Screening Network, the medial end shutoff of interior sifting barrel has annular filter screen, and charging aperture is connected with interior sifting barrel.When waste asphalt mixture is regenerated, need not pass through second-time breakage, in can be directly the waste asphalt mixture of bulk directly being joined in the sifting barrel, interior sifting barrel is along with the cylinder of outside rotates together, burner is when heating, make waste asphalt mixture progressively softening, separate, the Screening Network of interior sifting barrel periphery wall separates the block waste asphalt mixture of size, less waste asphalt mixture falls into cylinder inside by Screening Network, waste asphalt mixture is under the vexed mode of heating of this steaming, waste asphalt mixture is positioned at the upper position of cylinder in whole heating process, make be heated more even, the heat exchanger effectiveness height has kept the character of former compound substantially, avoids the ageing of asphalt problem that is caused by overheated; The cylinder that is positioned at the port of export is provided with the pitch jet pipe, can spray into pitch by the pitch jet pipe and mix according to the content of waste asphalt mixture medium pitch, makes the bituminous mixture medium pitch content of regeneration reach code requirement.The Screening Network of interior sifting barrel is made of three grades of Screening Networks from outside to inside, and isolated less waste asphalt mixture is separated in interior sifting barrel immediately, has improved the efficient of interchange of heat and the productive rate of cylinder.Inner wall of rotary drum is provided with profile of tooth lifting blade, spiral resistance material blade and material toggling post, to promote from isolated larger particles in the interior sifting barrel, stop than granule simultaneously and advance, prolong heating, broken time, the material toggling post clashes into fragmentation to the big waste asphalt mixture in cylinder and the interior sifting barrel simultaneously, has improved the heating separative efficiency.This asphalt mixture regenerating heating stirring roller has changed on a small scale, has hanged down the production model of energy rate, limited production, can carry out large batch of waste asphalt mixture cyclic regeneration, waste and old material need not pass through second-time breakage, reduced the breakage rate of cost of investment and aggregate, therefore need not add new material, the regeneration rate of waste and old material is reached more than 95%, can be directly used in secondary after the regeneration to get down the highway and the construction in place such as parking lot.
Below in conjunction with accompanying drawing specific embodiments of the invention are described in further detail.
Description of drawings
Fig. 1 is the general structure schematic diagram of asphalt mixture regenerating heating stirring roller.
The specific embodiment
Asphalt mixture regenerating heating stirring roller as shown in Figure 1, has the rolling stand 32 that supports the inclination that forms by front leg strut 33, rear support leg 28, cylinder 3 skins are enclosed with insulation layer 31, cylinder 3 is arranged on the rolling stand 32 by two rolling rings 8 of its outside of suit and the roller that matches with rolling ring 8, the cylinder front driving device 34 and cylinder rear drive equipment 29 head rolls 8 that are positioned on the rolling stand rotate, and rotate together thereby drive cylinder.Charging aperture 1 is positioned at the higher end of cylinder 3, and the cylinder of charging aperture 1 upper position is provided with cigarette wind outlet 4, and cylinder is provided with burner 20 than low side.The cylinder that is positioned at feed inlet end is set with sifting barrel 2, interior sifting barrel 2 is fixedlyed connected with cylinder 3, the periphery wall of interior sifting barrel is made of Screening Network, the medial end shutoff of interior sifting barrel has annular filter screen, charging aperture 1 is connected with interior sifting barrel 2, the Screening Network of interior sifting barrel is made of three grades of Screening Networks from outside to inside, the aperture of outermost one-level Screening Network 6 is 80mm * 80mm or 90mm * 90mm or 110mm * 110mm, the aperture of the secondary Screening Network 11 at middle part is 60mm * 60mm or 70mm * 70mm or 80mm * 80mm, and the aperture of three grades of terminal Screening Networks 14 is 40mm * 40mm or 50mm * 50mm or 60mm * 60mm.On the inner wall of rotary drum of one-level Screening Network 6 correspondences, be surrounded with profile of tooth lifting blade 7 and spiral resistance material blade 9, profile of tooth lifting blade 7 has the edge of odontoid, in whipping process, can carry out fragmentation to waste asphalt mixture, the profile of tooth lifting blade can be provided with in cylinder arranges profile of tooth lifting blade 12,15 as shown more, spiral resistance material blade 9 has the blade of spiral at cylinder 3 axial directions, can stop that the bituminous mixture than granule moves forward speed in the cylinder, prolong heat time heating time.Extricate from stock column 10 around being fixed with on the inner wall of rotary drum of secondary Screening Network 11 and three grades of Screening Network 14 correspondences more, in the end of material toggling post 10 extend in the sifting barrel, material toggling post 10 can be simultaneously in the rotation process of cylinder carries out fragmentation to the waste asphalt mixture that does not separate fully in the smaller particles in the cylinder and the interior sifting barrel.The medial end of interior sifting barrel 2 is provided with inner core access door 30.Be surrounded with exhibition material blade 17 and level exhibition material blade 18 on the inner wall of rotary drum of postmedian respectively, the periphery of burner flame area is provided with and hides flame arc 21, hides 21 pairs of flames of flame arc and blocks, and has avoided the high temperature ageing of pitch.The cylinder that is positioned at port of export burner below is provided with the pitch jet pipe, and the waste asphalt mixture that is separated into than granule is replenished pitch, makes the bituminous mixture after the regeneration reach standard-required.The cigarette wind outlet 4 of drum front end is connected with the airduct 5 that flashes back, the outlet of airduct 5 of flashing back is connected with the air intake of burner 20, when waste asphalt mixture in heating process, make by cigarette wind outlet 4 to produce pressure reduction in the cylinder, hot air is by in the cylinder, waste asphalt mixture is constantly heated, realize producing continuously, simultaneously, owing to heat the glance coal that produces enters burner 20 by the airduct 5 that flashes back combustion zone, burn, prevent that discharge from entering atmosphere and polluting bad border.The discharge end of cylinder is provided with feed box 19, the bottom that is positioned at feed box 19 is provided with agitator 23, and agitator 23 is driven by stirrer drive 27, and the bottom of feed box 19 is provided with discharging opening 24, emptying door 25 is hinged on discharging opening 24 positions, and emptying door 25 is by 26 controls of bin gate controller.When regenerating mixture entered in the agitator 23 by feed box 19, agitator 23 rotations mixed bituminous mixture, put into haulage vehicle by bin gate controller 26, emptying door 25 and discharging opening 24 then.

Claims (7)

1. asphalt mixture regenerating heating stirring roller, rolling stand with inclination, rolling ring, cylinder, drum drive, rolling ring is sleeved on the cylinder and by the roller on the rolling stand and supports, drum drive cooperates driving with rolling ring, cylinder be provided with burner than low side, the cylinder of burner bottom is provided with discharging opening, the other end of cylinder is provided with charging aperture, the cylinder on charging aperture top is provided with the outlet of cigarette wind, inner wall of rotary drum is provided with stirring vane, it is characterized in that: the cylinder that is positioned at feed inlet end is set with sifting barrel, interior sifting barrel is fixedlyed connected with cylinder, and the periphery wall of described interior sifting barrel is made of Screening Network, and the medial end shutoff of interior sifting barrel has annular filter screen, described charging aperture is connected with interior sifting barrel, and the cylinder that is positioned at port of export burner below is provided with the pitch jet pipe.
2. asphalt mixture regenerating heating stirring roller according to claim 1, it is characterized in that: the Screening Network of sifting barrel is made of three grades of Screening Networks from outside to inside in described, the aperture of outermost one-level Screening Network is 80mm * 80mm~110mm * 110mm, the aperture of the secondary Screening Network at middle part is 60mm * 60mm~80mm * 80mm, and the aperture of three grades of terminal Screening Networks is 40mm * 40mm~60mm * 60mm.
3. asphalt mixture regenerating heating stirring roller according to claim 2, it is characterized in that: be surrounded with profile of tooth lifting blade and spiral resistance material blade on the inner wall of rotary drum of described one-level Screening Network correspondence, be surrounded with on the inner wall of rotary drum of described secondary Screening Network correspondence and extricate from stock column more, the end of extricating from stock column extend in the interior sifting barrel more, is surrounded with the profile of tooth lifting blade on the inner wall of rotary drum of secondary Screening Network correspondence; Be surrounded with on the inner wall of rotary drum of described three grades of Screening Network correspondences and extricate from stock column more, in the end of extricating from stock column extend into more in the sifting barrel, on the inwall of the cylinder low side of three grades of Screening Network correspondences around the profile of tooth lifting blade is set.
4. according to the described asphalt mixture regenerating heating stirring roller of each claim of claim 1-3, it is characterized in that: the periphery of described burner flame area is provided with and hides the flame arc.
5. asphalt mixture regenerating heating stirring roller according to claim 4 is characterized in that: the discharge end of described cylinder is provided with feed box, and the bottom that is positioned at feed box is provided with agitator.
6. according to the described asphalt mixture regenerating heating stirring roller of each claim of claim 1-3, it is characterized in that: the cigarette wind outlet of described cylinder is connected with the airduct that flashes back, and the outlet of the airduct that flashes back is connected with the air intake of burner.
7. asphalt mixture regenerating heating stirring roller according to claim 4 is characterized in that: the cigarette wind outlet of described cylinder is connected with the airduct that flashes back, and the outlet of the airduct that flashes back is connected with the air intake of burner.
CNB2007101950514A 2007-12-11 2007-12-11 Asphalt mixture regenerating heating stirring roller Expired - Fee Related CN100570061C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2007101950514A CN100570061C (en) 2007-12-11 2007-12-11 Asphalt mixture regenerating heating stirring roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2007101950514A CN100570061C (en) 2007-12-11 2007-12-11 Asphalt mixture regenerating heating stirring roller

Publications (2)

Publication Number Publication Date
CN101168951A true CN101168951A (en) 2008-04-30
CN100570061C CN100570061C (en) 2009-12-16

Family

ID=39389710

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2007101950514A Expired - Fee Related CN100570061C (en) 2007-12-11 2007-12-11 Asphalt mixture regenerating heating stirring roller

Country Status (1)

Country Link
CN (1) CN100570061C (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031745A (en) * 2010-12-13 2011-04-27 刘新 Drum blade for heated asphalt mixture
CN102329630A (en) * 2011-07-14 2012-01-25 无锡雪桃集团有限公司 Non-contact temperature measuring asphalt regeneration device
CN102337717A (en) * 2011-08-03 2012-02-01 福建泉成机械有限公司 Asphalt mixture hot in-place recycling vehicle
CN103015294A (en) * 2012-12-10 2013-04-03 中联重科股份有限公司 Drying roller and asphalt stirring equipment
CN104015262A (en) * 2014-06-08 2014-09-03 丁鉴群 Concrete agitating pumping machine
CN105755931A (en) * 2016-04-29 2016-07-13 中山市易路美道路养护科技有限公司 Heat regenerating device
CN105926415A (en) * 2016-06-12 2016-09-07 福建南方路面机械有限公司 Asphalt recycling drying drum and drying method thereof
CN105970771A (en) * 2016-07-08 2016-09-28 山东省路桥集团有限公司 Plant-mixing thermal regeneration drying rotary drum for asphalt
CN106835901A (en) * 2017-03-31 2017-06-13 徐州徐工筑路机械有限公司 A kind of roller storage bin system and its asphalt pavement maintanance truck for asphalt scene frying
CN109235191A (en) * 2018-09-28 2019-01-18 王芃 A kind of environment-friendly type bituminous concrete mixing equipment
CN109235192A (en) * 2018-09-30 2019-01-18 中山市易路美道路养护科技有限公司 The roller chain device of concealed roller hot recycling equipment afterwards
CN110295527A (en) * 2018-03-22 2019-10-01 吉林省嘉鹏集团有限公司 In-situ heat regeneration malaxation device
CN111482352A (en) * 2020-04-22 2020-08-04 江苏奥新科技有限公司 Asphalt mixture aggregate grading drum sieve device is retrieved on road surface
CN114909886A (en) * 2022-05-11 2022-08-16 奈岩(上海)机械科技发展有限公司 Multifunctional drying drum for asphalt mixing station
CN116219829A (en) * 2022-12-30 2023-06-06 廊坊德基机械科技有限公司 Antiseized hot regeneration drying cylinder
CN118639497A (en) * 2024-08-14 2024-09-13 福建省铁拓机械股份有限公司 Counterflow type plant-mixed heat regeneration drying roller

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102031745B (en) * 2010-12-13 2012-09-19 刘新 Drum blade for heated asphalt mixture
CN102031745A (en) * 2010-12-13 2011-04-27 刘新 Drum blade for heated asphalt mixture
CN102329630A (en) * 2011-07-14 2012-01-25 无锡雪桃集团有限公司 Non-contact temperature measuring asphalt regeneration device
CN102337717A (en) * 2011-08-03 2012-02-01 福建泉成机械有限公司 Asphalt mixture hot in-place recycling vehicle
CN103015294A (en) * 2012-12-10 2013-04-03 中联重科股份有限公司 Drying roller and asphalt stirring equipment
CN103015294B (en) * 2012-12-10 2015-01-21 中联重科股份有限公司 Drying roller and asphalt stirring equipment
CN104015262A (en) * 2014-06-08 2014-09-03 丁鉴群 Concrete agitating pumping machine
CN105755931A (en) * 2016-04-29 2016-07-13 中山市易路美道路养护科技有限公司 Heat regenerating device
CN105755931B (en) * 2016-04-29 2018-02-16 中山市易路美道路养护科技有限公司 A kind of hot recycling equipment
CN105926415A (en) * 2016-06-12 2016-09-07 福建南方路面机械有限公司 Asphalt recycling drying drum and drying method thereof
CN105970771B (en) * 2016-07-08 2018-08-21 山东省路桥集团有限公司 The hot in-plant reclaimed drying drum of pitch
CN105970771A (en) * 2016-07-08 2016-09-28 山东省路桥集团有限公司 Plant-mixing thermal regeneration drying rotary drum for asphalt
CN106835901A (en) * 2017-03-31 2017-06-13 徐州徐工筑路机械有限公司 A kind of roller storage bin system and its asphalt pavement maintanance truck for asphalt scene frying
CN106835901B (en) * 2017-03-31 2022-06-24 徐州徐工养护机械有限公司 Roller bin system for on-site stir-frying of asphalt mixture and asphalt pavement maintenance truck with roller bin system
CN110295527A (en) * 2018-03-22 2019-10-01 吉林省嘉鹏集团有限公司 In-situ heat regeneration malaxation device
CN109235191A (en) * 2018-09-28 2019-01-18 王芃 A kind of environment-friendly type bituminous concrete mixing equipment
CN109235192A (en) * 2018-09-30 2019-01-18 中山市易路美道路养护科技有限公司 The roller chain device of concealed roller hot recycling equipment afterwards
CN111482352A (en) * 2020-04-22 2020-08-04 江苏奥新科技有限公司 Asphalt mixture aggregate grading drum sieve device is retrieved on road surface
CN114909886A (en) * 2022-05-11 2022-08-16 奈岩(上海)机械科技发展有限公司 Multifunctional drying drum for asphalt mixing station
CN114909886B (en) * 2022-05-11 2023-10-31 奈岩(上海)机械科技发展有限公司 Multifunctional drying cylinder for asphalt mixing station
CN116219829A (en) * 2022-12-30 2023-06-06 廊坊德基机械科技有限公司 Antiseized hot regeneration drying cylinder
CN118639497A (en) * 2024-08-14 2024-09-13 福建省铁拓机械股份有限公司 Counterflow type plant-mixed heat regeneration drying roller

Also Published As

Publication number Publication date
CN100570061C (en) 2009-12-16

Similar Documents

Publication Publication Date Title
CN100570061C (en) Asphalt mixture regenerating heating stirring roller
CN201132925Y (en) Asphalt mixture regenerative heating stirring and rolling barrel
CN103088743A (en) Continuous asphalt mixture regeneration stirring apparatus
CN207042572U (en) A kind of exploitation of mineral resources ore crushing and screening equipment integrating
CN109749757A (en) A kind of the regeneration matter product set and its preparation method of scrap rubber/plastics
CN113694908B (en) Environment-friendly regenerated active carbon production equipment and process
CN110976486B (en) Environment-friendly recycle device for industrial coal waste
CN208501437U (en) A kind of environment-friendly type waste asphalt recyclable device
CN112892090B (en) Dust removal device and dust removal method for recycled concrete mixing
CN110373971A (en) A kind of heating device adding asphalt-regenerating material
KR100913534B1 (en) Regenerating apparatus of wasted ascon having circulating exhaust pipe
CN215757166U (en) Melting machine for fully and uniformly melting modified asphalt
CN210373456U (en) Domestic waste incineration equipment
CN203096562U (en) Continuous mixing equipment of reclaimed bituminous mixture
CN101066864B (en) Dry process artificial mullite producing line
CN215800890U (en) Towed old material regeneration cylinder maintenance car
CN109366808A (en) Recycling material of waste asphalt crushing device
CN114131809A (en) Nylon wheel is pouring device for shaping
CN208517783U (en) Pitch regenerates mixer
CN212561646U (en) Miniature energy-saving diesel four-wheel drive loader
CN210621399U (en) Drying equipment for asphalt mixture regeneration
CN210737289U (en) Heating device capable of adding asphalt reclaimed materials
CN210104492U (en) Hot reclaimed material heating device of plantmix
CN206692993U (en) A kind of asphalt regenerative device
CN214613493U (en) Road comprehensive maintenance vehicle

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091216

Termination date: 20161211

CF01 Termination of patent right due to non-payment of annual fee