EP3061868A1 - Anti-segregation auger distributor and paver - Google Patents

Anti-segregation auger distributor and paver Download PDF

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Publication number
EP3061868A1
EP3061868A1 EP14855986.7A EP14855986A EP3061868A1 EP 3061868 A1 EP3061868 A1 EP 3061868A1 EP 14855986 A EP14855986 A EP 14855986A EP 3061868 A1 EP3061868 A1 EP 3061868A1
Authority
EP
European Patent Office
Prior art keywords
segregation
auger
paver
plow
mixture
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.)
Withdrawn
Application number
EP14855986.7A
Other languages
German (de)
French (fr)
Other versions
EP3061868A4 (en
Inventor
Jinyang XIA
Junliang WU
Jinu WANG
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.)
Dynapac China Compaction and Paving Equipment Co Ltd
Original Assignee
Dynapac China Compaction and Paving Equipment Co Ltd
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 Dynapac China Compaction and Paving Equipment Co Ltd filed Critical Dynapac China Compaction and Paving Equipment Co Ltd
Publication of EP3061868A1 publication Critical patent/EP3061868A1/en
Publication of EP3061868A4 publication Critical patent/EP3061868A4/en
Withdrawn legal-status Critical Current

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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
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • 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
    • E01C19/48—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ

Definitions

  • the present invention relates to an auger, particularly to an anti-segregation auger and a paver with the anti-segregation auger.
  • the road surface segregation caused by the asphalt concrete paver mainly includes: hopper segregation, auger mixing segregation, rammer compaction segregation, screed pavement segregation, and random segregation and so on.
  • the scraper is a translational layered transmission device with no re-mixing function to the mixture, thus it cannot improve the physical and temperature segregations of the mixture caused by previous procedures. Due to this, in recent years, a process, in which a mixture transferring vehicle is additionally provided in front of the paver, arises, and the temperature and physical segregations are effectively improved by the functions of heat preservation, heating and stirring and so on in the process. As for the paver itself, improvement of the segregation is mainly achieved by the structure design and kinematic parameters of the auger.
  • the secondary stirring for the asphalt mixture will be made by the auger during asphalt mixture transmission, and the effect of the secondary stirring will be influenced by the action of the inner friction force of the asphalt mixture and the action of the outer friction force between the mixture and an auger flight.
  • a good auger of a paver should be capable of stirring the mixture well, so that the mixture segregation caused by previous procedures is effectively improved, and meanwhile, the required amount of the mixture at different parts of the paving width is satisfied, thereby ensuring the flatness. This is the ultimate object on the design of the auger, and is also the reasonable way to improve the performance of the paver.
  • the problem to be solved by the present invention is to provide an auger for a paver which can prevent segregation from occurring under the bottom of the center driving sprocket box of the auger.
  • the present invention provides an anti-segregation auger arranged on a paver and including left and right basic augers and a center driving sprocket box, wherein a plow-shaped distributing device for distributing the mixture entering into the anti-segregation auger to both left and right sides is provided in front of the center driving sprocket box.
  • a left reverse auger flight and a right reverse auger flight for transmitting a part of mixture back to the bottom of the center driving sprocket box are fixedly provided on the left and right basic augers which are at both left and right sides of the center driving sprocket box respectively.
  • the plow-shaped distributing device is connected with a steel plate on which a plurality of oblong through holes are provided, wherein the plow-shaped distributing device is fixed on the center driving sprocket box by bolts passing through the oblong through holes.
  • the present invention also provides a paver with the above-described anti-segregation auger.
  • Beneficial effects of the anti-segregation auger and the paver of the present invention lie in several aspects as follows: its plow-shaped distributing device can effectively regulate the flowing of the mixture, so that the asphalt mixture is stirred effectively, which reduces the accumulation and pressing of the mixture under the bottom of the center driving sprocket box and reduces longitudinal segregation of the asphalt mixture, thereby improving the paving quality of the road surface after paving.
  • a plow-shaped distributing device 1 of an anti-segregation auger of the present invention has a shape similar to a nose, and the front central portion thereof is a plow beam 10, wherein a steel plate 9 is connected with the plow-shaped distributing device 1, and a plurality of through holes are provided on the steel plate 9.
  • a steel plate 9 is connected with the plow-shaped distributing device 1, and a plurality of through holes are provided on the steel plate 9.
  • Fig. 5 in the top view of the plow-shaped distributing device 1, it is generally in a shape of an inverted triangle.
  • the plow-shaped distributing device 1 is provided in front of the center driving sprocket box 8.
  • the plow-shaped distributing device 1 is fixed on the center driving sprocket box 8 of the anti-segregation auger and is located in front of it.
  • the through hole on the steel plate 9 for the bolt 6 to pass through is preferably an oblong through-hole, so that the bolt 6 can slide up and down in the oblong through-hole, and therefore, the plow-shaped distributing device 1 can be regulated up and down according to the requirement of working conditions.
  • the plow-shaped distributing device 1 can also be directly welded on the steel structure of the center driving sprocket box 8, and moves up and down by regulating a lifting cylinder 7 and the center driving sprocket box 8.
  • the asphalt mixture enters into the anti-segregation auger from the feeder (not shown) on a paver frame 13 side, and is distributed to both left and right sides of the plow-shaped distributing device 1 via the plow beam 10 of the plow-shaped distributing device 1, and after being sent to a left blocking plate 4 and a right blocking plate 5, it is conveyed to the two sides of the trough formed by the left blocking plate 4, the right blocking plate 5 and the screed 14, with the rotation of an auger flight 11 and an auger flight 12 on the left and right basic augers.
  • the plow beam 10 of the plow-shaped distributing device 1 transits to the two sides of the device by smooth arcs, which can reduce the flowing resistance of the mixture and facilitate the flowing of the mixture, so that the mixture is evenly scattered on the two sides along the plow beam of the plow-shaped distributing device 1, thereby avoiding the mixture under the bottom of the center sprocket box being forcedly pressed by the sprocket box due to accumulation.
  • a left reverse auger flight 2 and a right reverse auger flight 3 arranged on the left and right basic augers at the left and right sides of the center driving sprocket box 8 can reversely stir the asphalt mixture, and transmit a part of mixture distributed to the two sides by the plow-shaped distributing device 1 back to the bottom of the center driving sprocket box 8 while sufficiently stirring, thereby avoiding the asphalt mixture being space-interfered by the plow-shaped distributing device 1 and disconnected by a certain distance at the center joint.
  • the paver with the anti-segregation auger of the present invention at its center driving sprocket box 8, after the asphalt mixture passes the plow-shaped distributing device, there is no phenomenon of low compactness and uneven gradation, which can effectively reduce the occurrence of longitudinal segregation of the asphalt mixture at the center driving sprocket box 8.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

The present invention discloses an anti-segregation auger and a paver, wherein the anti-segregation auger is provided on the paver and includes left and right basic augers and a center driving sprocket box, and a plow-shaped distributing device for distributing the mixture entering into the anti-segregation auger to both left and right sides is provided in front of the center driving sprocket box. Beneficial effects of the anti-segregation auger and the paver of the present invention lie in several aspects as follows: its plow-shaped distributing device can effectively regulate the flowing of the mixture, so that the asphalt mixture is stirred effectively, which reduces the accumulation and pressing of the mixture under the bottom of the center driving sprocket box and reduces longitudinal segregation of the asphalt mixture, thereby improving the paving quality of the road surface after paving.

Description

    Technical Field
  • The present invention relates to an auger, particularly to an anti-segregation auger and a paver with the anti-segregation auger.
    • Background
  • As the road construction technology constantly improves and the requirement on the road surface quality constantly increases, application and status of an asphalt concrete paver get more and more attention, and segregation phenomenon occurred to the road surface by the asphalt concrete paver during construction also gets more and more attention. There are many reasons resulting in road surface segregation, and the road surface segregation caused by the asphalt concrete paver mainly includes: hopper segregation, auger mixing segregation, rammer compaction segregation, screed pavement segregation, and random segregation and so on.
  • For the asphalt concrete paver, transmission and distribution of the mixture are implemented by two important components, i.e. a scraper and an auger. The scraper is a translational layered transmission device with no re-mixing function to the mixture, thus it cannot improve the physical and temperature segregations of the mixture caused by previous procedures. Due to this, in recent years, a process, in which a mixture transferring vehicle is additionally provided in front of the paver, arises, and the temperature and physical segregations are effectively improved by the functions of heat preservation, heating and stirring and so on in the process. As for the paver itself, improvement of the segregation is mainly achieved by the structure design and kinematic parameters of the auger.
  • After the primary stirring for the asphalt mixture by a stirring machine, the secondary stirring for the asphalt mixture will be made by the auger during asphalt mixture transmission, and the effect of the secondary stirring will be influenced by the action of the inner friction force of the asphalt mixture and the action of the outer friction force between the mixture and an auger flight. However, a good auger of a paver should be capable of stirring the mixture well, so that the mixture segregation caused by previous procedures is effectively improved, and meanwhile, the required amount of the mixture at different parts of the paving width is satisfied, thereby ensuring the flatness. This is the ultimate object on the design of the auger, and is also the reasonable way to improve the performance of the paver.
  • During construction, it is easy for longitudinal segregation, that is, a strip-shape segregation band along a vehicle running direction appeared on the paving layer, to occur under the bottom of a center driving sprocket box of the auger. This is due to the space taken by the center driving sprocket box, and thus, the left and right basic augers are disconnected with a certain distance at the center joint. Thus, the mixture at the disconnected area cannot be spread and stirred evenly by the auger flights but can only be filled up with the natural flowing of the mixture, which will lead to accumulation and pressing under the bottom of the center driving sprocket box. Therefore, after paving, the paving compactness is low and the gradation is uneven, forming an obvious stripe-shape segregation band.
    • Summary
  • Directed to the above shortcomings existing in the prior art, the problem to be solved by the present invention is to provide an auger for a paver which can prevent segregation from occurring under the bottom of the center driving sprocket box of the auger.
  • To solve the above problems, the present invention provides an anti-segregation auger arranged on a paver and including left and right basic augers and a center driving sprocket box, wherein a plow-shaped distributing device for distributing the mixture entering into the anti-segregation auger to both left and right sides is provided in front of the center driving sprocket box.
  • Preferably, a left reverse auger flight and a right reverse auger flight for transmitting a part of mixture back to the bottom of the center driving sprocket box are fixedly provided on the left and right basic augers which are at both left and right sides of the center driving sprocket box respectively.
  • Preferably, the plow-shaped distributing device is connected with a steel plate on which a plurality of oblong through holes are provided, wherein the plow-shaped distributing device is fixed on the center driving sprocket box by bolts passing through the oblong through holes.
  • The present invention also provides a paver with the above-described anti-segregation auger.
  • Beneficial effects of the anti-segregation auger and the paver of the present invention lie in several aspects as follows: its plow-shaped distributing device can effectively regulate the flowing of the mixture, so that the asphalt mixture is stirred effectively, which reduces the accumulation and pressing of the mixture under the bottom of the center driving sprocket box and reduces longitudinal segregation of the asphalt mixture, thereby improving the paving quality of the road surface after paving.
    • Drawings
    • Fig. 1 is a front view of the anti-segregation auger of the present invention;
    • Fig. 2 is a left side view of the anti-segregation auger of the present invention;
    • Fig. 3 is a front view of the plow-shaped distributing device of the anti-segregation auger of the present invention;
    • Fig. 4 is a right side view of the plow-shaped distributing device of the anti-segregation auger of the present invention; and
    • Fig. 5 is a top view of the plow-shaped distributing device of the anti-segregation auger of the present invention.
    Description of Embodiment
  • The present invention will be described in further detail hereinafter with reference to the accompanying drawings and the specific embodiment, but it does not limit the present invention.
  • As shown in Figs. 3 and 4, a plow-shaped distributing device 1 of an anti-segregation auger of the present invention has a shape similar to a nose, and the front central portion thereof is a plow beam 10, wherein a steel plate 9 is connected with the plow-shaped distributing device 1, and a plurality of through holes are provided on the steel plate 9. As shown in Fig. 5, in the top view of the plow-shaped distributing device 1, it is generally in a shape of an inverted triangle.
  • In the present invention, the plow-shaped distributing device 1 is provided in front of the center driving sprocket box 8. As shown in Fig. 1, in a preferable embodiment of the present invention, by a bolt 6 passing through the through hole on the steel plate 9, the plow-shaped distributing device 1 is fixed on the center driving sprocket box 8 of the anti-segregation auger and is located in front of it. The through hole on the steel plate 9 for the bolt 6 to pass through is preferably an oblong through-hole, so that the bolt 6 can slide up and down in the oblong through-hole, and therefore, the plow-shaped distributing device 1 can be regulated up and down according to the requirement of working conditions. The plow-shaped distributing device 1 can also be directly welded on the steel structure of the center driving sprocket box 8, and moves up and down by regulating a lifting cylinder 7 and the center driving sprocket box 8.
  • With continued reference to Figs. 1 and 2, when the paver works, the asphalt mixture enters into the anti-segregation auger from the feeder (not shown) on a paver frame 13 side, and is distributed to both left and right sides of the plow-shaped distributing device 1 via the plow beam 10 of the plow-shaped distributing device 1, and after being sent to a left blocking plate 4 and a right blocking plate 5, it is conveyed to the two sides of the trough formed by the left blocking plate 4, the right blocking plate 5 and the screed 14, with the rotation of an auger flight 11 and an auger flight 12 on the left and right basic augers.
  • The plow beam 10 of the plow-shaped distributing device 1 transits to the two sides of the device by smooth arcs, which can reduce the flowing resistance of the mixture and facilitate the flowing of the mixture, so that the mixture is evenly scattered on the two sides along the plow beam of the plow-shaped distributing device 1, thereby avoiding the mixture under the bottom of the center sprocket box being forcedly pressed by the sprocket box due to accumulation. Meanwhile, a left reverse auger flight 2 and a right reverse auger flight 3 arranged on the left and right basic augers at the left and right sides of the center driving sprocket box 8 can reversely stir the asphalt mixture, and transmit a part of mixture distributed to the two sides by the plow-shaped distributing device 1 back to the bottom of the center driving sprocket box 8 while sufficiently stirring, thereby avoiding the asphalt mixture being space-interfered by the plow-shaped distributing device 1 and disconnected by a certain distance at the center joint.
  • As for the paver with the anti-segregation auger of the present invention, at its center driving sprocket box 8, after the asphalt mixture passes the plow-shaped distributing device, there is no phenomenon of low compactness and uneven gradation, which can effectively reduce the occurrence of longitudinal segregation of the asphalt mixture at the center driving sprocket box 8.
  • Certainly, the above description is only a preferable embodiment of the present invention, and it should be noted that a person skilled in the art can also make various modifications and variations without departing from the principles of the present invention, and these modifications and variations are also considered to be within the scope of the present invention.

Claims (4)

  1. An anti-segregation auger, provided on a paver, including left and right basic augers and a center driving sprocket box, characterized in that, a plow-shaped distributing device for distributing the mixture entering into the anti-segregation auger to both left and right sides is provided in front of the center driving sprocket box.
  2. The anti-segregation auger of claim 1, characterized in that, a left reverse auger flight and a right reverse auger flight for transmitting a part of mixture back to the bottom of the center driving sprocket box are fixedly provided on the left and right basic augers at both left and right sides of the center driving sprocket box respectively.
  3. The anti-segregation auger of claim 1, characterized in that, the plow-shaped distributing device is connected with a steel plate on which a plurality of oblong through holes are provided, wherein the plow-shaped distributing device is fixed on the center driving sprocket box by bolts passing through the oblong through holes.
  4. A paver, characterized in that, it has the anti-segregation auger of any one of claims 1 to 3.
EP14855986.7A 2013-10-21 2014-05-15 Anti-segregation auger distributor and paver Withdrawn EP3061868A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310498558.2A CN103526674B (en) 2013-10-21 2013-10-21 A kind of anti-segregation spiral distributor and paver
PCT/CN2014/077526 WO2015058515A1 (en) 2013-10-21 2014-05-15 Anti-segregation auger distributor and paver

Publications (2)

Publication Number Publication Date
EP3061868A1 true EP3061868A1 (en) 2016-08-31
EP3061868A4 EP3061868A4 (en) 2018-04-04

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EP14855986.7A Withdrawn EP3061868A4 (en) 2013-10-21 2014-05-15 Anti-segregation auger distributor and paver

Country Status (4)

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US (1) US20160265172A1 (en)
EP (1) EP3061868A4 (en)
CN (1) CN103526674B (en)
WO (1) WO2015058515A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103526674B (en) * 2013-10-21 2015-11-04 戴纳派克（中国）压实摊铺设备有限公司 A kind of anti-segregation spiral distributor and paver
CN110468658B (en) * 2018-05-09 2023-08-22 新疆北方建设集团有限公司 Device and method for adjusting asphalt structure
CN109537406A (en) * 2019-01-11 2019-03-29 甘肃路桥建设集团有限公司 A kind of spreading machine isolation-proof baffle
CN110468660A (en) * 2019-08-13 2019-11-19 天津工程机械研究院有限公司 The anti-isolation stock guide structure of paver screw material-distributing chain-wheel box and paver
CN114855555B (en) * 2022-05-25 2024-02-09 东营广通科技有限公司 Highway asphalt pavement construction device and construction method thereof
CN115369719B (en) * 2022-09-01 2023-09-12 锦旭建设有限公司 Cement stabilized macadam basic unit construction paving device for municipal construction
CN116334988B (en) * 2023-02-28 2023-10-13 徐工集团工程机械股份有限公司道路机械分公司 Paver feed divider system and paver

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US955077A (en) * 1909-06-10 1910-04-12 William H Janney Pulp-extractor.
US5279501A (en) * 1992-06-15 1994-01-18 Caterpillar Paving Products Inc. Screw conveyor
US5405214A (en) * 1993-08-12 1995-04-11 Astec Industries, Inc. Paving machine incorporating automatic feeder control gates
US5531542A (en) * 1994-11-14 1996-07-02 Ingersoll-Rand Company Dual auger/conveyor drive for a paver
US5622323A (en) * 1995-08-10 1997-04-22 Gehl Company Hay processing system for a mixer feeder
US6106192A (en) * 1998-04-17 2000-08-22 Blaw-Knox Construction Equipment Corp. Flow modifying device for paving screeds with extendible sections
IT248739Y1 (en) * 1999-02-01 2003-02-12 Bitelli Spa VIBRIN FINISHING MACHINE.
EP1313919B1 (en) * 2000-07-17 2009-07-22 Blaw-Knox Construction Equipment Corporation Material anti-segregation curtain for a paver
CN2518892Y (en) * 2002-01-10 2002-10-30 三一重工股份有限公司 Spiral distributing device for asphalt concrete paver
CN2673930Y (en) * 2004-01-15 2005-01-26 三一重工股份有限公司 Distributing apparatus for screw material distributor
CN201137031Y (en) * 2007-12-27 2008-10-22 长沙理工大学 Asphalt concrete spreader spiral distribution device
CN201176554Y (en) * 2008-03-28 2009-01-07 长沙理工大学 Anti-maceration spiral distributor of asphalt concrete spreader
US8162565B2 (en) * 2008-04-01 2012-04-24 Volvo Construction Equipment Ab Break-away material retainer for paving vehicles
CN101294366B (en) * 2008-05-29 2010-06-30 三一重工股份有限公司 Screw blade, feed divider having the screw blade and spreader thereof
US7785034B2 (en) * 2008-06-26 2010-08-31 Weiler, Inc. Desegregation system
CN201778268U (en) * 2010-09-20 2011-03-30 广东冠粤路桥有限公司 Parallel spreading scraping plough for longitudinal joints
CN201952711U (en) * 2010-11-13 2011-08-31 陕西长大实业有限公司 Spreading machine
WO2013026202A1 (en) * 2011-08-24 2013-02-28 长沙中联重工科技发展股份有限公司 Paving machine and mounting structure for distributing device thereof
CN103526674B (en) * 2013-10-21 2015-11-04 戴纳派克（中国）压实摊铺设备有限公司 A kind of anti-segregation spiral distributor and paver
CN203530821U (en) * 2013-10-21 2014-04-09 戴纳派克（中国）压实摊铺设备有限公司 Anti-segregation spiral distributor and spreading machine

Also Published As

Publication number Publication date
US20160265172A1 (en) 2016-09-15
EP3061868A4 (en) 2018-04-04
CN103526674B (en) 2015-11-04
CN103526674A (en) 2014-01-22
WO2015058515A1 (en) 2015-04-30

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