CN113186791B - In-situ hot regeneration unit capable of simultaneously realizing aging layer removal and lateral material addition and construction method thereof - Google Patents
In-situ hot regeneration unit capable of simultaneously realizing aging layer removal and lateral material addition and construction method thereof Download PDFInfo
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- CN113186791B CN113186791B CN202110316966.6A CN202110316966A CN113186791B CN 113186791 B CN113186791 B CN 113186791B CN 202110316966 A CN202110316966 A CN 202110316966A CN 113186791 B CN113186791 B CN 113186791B
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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
- E01C23/12—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
- E01C23/122—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
- E01C23/127—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus rotary, e.g. rotary hammers
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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
- E01C23/0966—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 filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
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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
- E01C23/0966—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 filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
- E01C23/0973—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 filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants
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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
- E01C23/12—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
-
- 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
- E01C23/14—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces for heating or drying foundation, paving, or materials thereon, e.g. paint
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Road Paving Machines (AREA)
Abstract
本发明公开了一种可同步实现老化层剔除、侧向添料的就地热再生机组及其施工方法，所述可同步实现老化层剔除、侧向添料的就地热再生机组包括热风加热机、加热剔除机、旧沥青老化层运输车、加热铣刨机、新沥青混合料运输车、添料复拌机和摊铺机；所述的热风加热机、加热剔除机、加热铣刨机、添料复拌机、摊铺机均依次先后设置于再生车道；所述的旧沥青老化层运输车、新沥青混合料运输车均位于再生车道的侧向车道，所述旧沥青老化层运输车接收所述加热剔除机输送的旧沥青老化层；所述新沥青混合料运输车输出新沥青混合料至所述添料复拌机。本发明能够一次性完成5～10mm沥青路面老化层的剔除作业，无级配破坏，提升了再生料品质。
The present invention discloses an on-site hot regeneration unit capable of synchronously realizing the removal of aged layers and lateral material addition and a construction method thereof. The on-site hot regeneration unit capable of synchronously realizing the removal of aged layers and lateral material addition comprises a hot air heater, a heating removal machine, an old asphalt aged layer transport vehicle, a heating milling machine, a new asphalt mixture transport vehicle, a material adding and remixing machine and a paver; the hot air heater, the heating removal machine, the heating milling machine, the material adding and remixing machine and the paver are successively arranged in the regeneration lane; the old asphalt aged layer transport vehicle and the new asphalt mixture transport vehicle are both located in the lateral lane of the regeneration lane, the old asphalt aged layer transport vehicle receives the old asphalt aged layer transported by the heating removal machine; the new asphalt mixture transport vehicle outputs the new asphalt mixture to the material adding and remixing machine. The present invention can complete the removal of the 5-10 mm asphalt pavement aged layer at one time without gradation damage, thereby improving the quality of the recycled material.
Description
Technical Field
The invention relates to the technical field of road maintenance equipment, in particular to an in-situ heat regeneration unit capable of synchronously realizing ageing layer rejection and lateral material addition and a construction method thereof.
Background
The technology is characterized in that a special in-situ thermal regeneration device is adopted to heat, mill and then mix a certain new asphalt mixture into an asphalt pavement, and the old asphalt pavement in a certain depth range on the surface is regenerated at one time through the procedures of mixing, paving, rolling and the like.
The existing in-situ heat regeneration unit at home and abroad mainly has the following defects:
(1) The aged layer of asphalt pavement affects the quality of regeneration. The in-situ heat regeneration process adopts a plurality of pavement heaters to heat and soften the asphalt pavement, and adopts open fire, gas infrared, high-temperature hot air and other heating modes to cause the aging and scorching of 5-10 mm materials on the surface layer of the asphalt pavement, so that once the asphalt material is aged and deteriorated, the performance of the asphalt material is hard to recover, and no special equipment for removing the aging layer of the asphalt pavement capable of realizing continuous and uninterrupted is yet seen in the market at present;
(2) The new materials are difficult to add and the heat loss is large. The method comprises the steps that an original asphalt pavement is heated and milled and then gathered up into a 200-300 mm thick material pile, before a material transporting dump truck is added, a plurality of pavement heaters and heating milling machines need to move forward for 20-30 m, then the transporting dump truck spans the thick material pile, and is ridden on the material pile to be added into a hopper of a remixer, so that the remixer frequently stops working, the thick material pile is driven out after the material addition is finished, and then the plurality of heaters and the heating milling machines are retracted and restored to work, and the defects of difficult material addition, long interval time, large heat loss, poor regeneration flatness and the like exist in the material adding process;
(3) The single stirring device is affected by the whole length, the stirring time is short, and the stirring uniformity is poor, the stirring cylinder in the market is heated by open fire or infrared heating, the heating temperature is uncontrollable, and the scorching and deterioration of the asphalt mixture are easy to cause;
(4) Super-contour, overweight, overrun. The whole machine of the in-situ heat regeneration unit in the market has huge overall dimension, excessive weight and the like, and is difficult to climb and transition.
The defects cause that the in-situ heat regeneration unit on the market can not meet the requirements of safe maintenance and high-standard high-quality maintenance of modern asphalt pavements (especially expressways and municipal roads).
Disclosure of Invention
Aiming at the problems, the invention provides the in-situ thermal regeneration unit capable of synchronously removing the aged layer and laterally adding the materials and the construction method thereof, which can finish the removing operation of the aged layer of the asphalt pavement of 5-10 mm at one time, realize stepless allocation and damage and improve the quality of the regenerated materials.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
in a first aspect, the invention provides an in-situ heat regeneration unit capable of synchronously realizing ageing layer rejection and lateral material addition, which comprises a hot air heater, a heating rejection machine, an old asphalt ageing layer transport vehicle, a heating milling machine, a new asphalt mixture transport vehicle, a material addition remixer and a paver;
The hot air heater, the heating removing machine, the heating milling machine, the material adding remixer and the paver are sequentially arranged on the regeneration lane;
the old asphalt ageing layer transport vehicle and the new asphalt mixture transport vehicle are both positioned on the lateral lane of the regeneration lane and are respectively close to the heating removing machine and the heating milling machine.
Optionally, the number of the hot air heaters is 2-3, and the hot air heaters are used for heating old asphalt pavement, each hot air heater comprises a hot air heater body and a plurality of groups of pavement heating walls which are sequentially arranged below the hot air heater body, and a pavement heat insulation board is arranged at the tail part of each hot air heater.
The heating and removing machine is used for removing and conveying aged layers of old asphalt pavement, and comprises a heating and removing machine body, wherein at least two groups of pavement heating walls are arranged at the front part below the heating and removing machine body, an aged layer removing device is arranged at the rear part of each pavement heating wall, a vertical scraping and conveying device is arranged at the rear part of each aged layer removing device, and a pavement heating wall and a pavement heat insulation plate are sequentially arranged at the rear part of each vertical scraping and conveying device.
Optionally, the ageing layer removing device comprises a fixing frame, a lifting frame, two groups of symmetrical lifting cylinders, a connecting rod, a scarification conveyer I, a sliding cylinder I, a scarification conveyer II and a sliding cylinder II;
The fixing frame is fixed on the frame;
the lifting frame is connected with the fixed frame through a parallelogram link mechanism;
The cylinder bodies and the piston rods of the two symmetrical groups of lifting cylinders are respectively in pin joint with the fixing frame and the lifting frame;
The scarification conveyor I and the scarification conveyor II are suspended below the lifting frame in an opposite manner;
the cylinder body and the piston rod of the sliding oil cylinder I are respectively pin-jointed on the lifting frame and the scarification feeder I;
The cylinder body and the piston rod of the sliding oil cylinder II are respectively in pin joint with the lifting frame and the scarification feeder II.
Optionally, the vertical scraping conveying device comprises a left telescopic sleeve, a right telescopic cylinder, an up-down lifting sliding component, an up-down lifting cylinder, a vertical lifting frame, a scraping bucket chain, a driving shaft, a driven shaft, a riding wheel shaft, a discharging hole, a receiving hopper, a slewing bearing and a spiral feeder;
The outer cylinders of the left and right telescopic sleeves are connected with the frame, and the inner cylinders are connected with the up-down lifting sliding component;
the cylinder bodies and the piston rods of the left and right telescopic cylinders are respectively in pin joint with the frame and the up-down lifting sliding component;
The up-down lifting sliding component is nested with the vertical lifting frame;
The cylinder body and the piston rod of the upper and lower lifting cylinders are respectively in pin joint with the upper and lower lifting sliding component and the vertical lifting frame;
under the action of the left and right telescopic cylinders, the up-and-down lifting sliding component and the vertical lifting frame can realize left and right telescopic;
under the action of the upper and lower lifting cylinders, the vertical lifting frame can realize upper and lower height adjustment along the upper and lower lifting sliding component;
The scraping hopper chain is arranged in the vertical lifting frame;
the driving shaft, the riding wheel shaft and the driven shaft are arranged from top to bottom and are connected with a scraping hopper chain;
the discharge hole is positioned at the top of the vertical lifting frame;
The upper part of the spiral feeder is provided with a receiving hopper which is positioned below the discharge hole, the spiral feeder is fixed on the vertical lifting frame through a slewing bearing, and the spiral feeder can realize circular slewing motion under the action of the slewing bearing, so that the adjustment of the feeding height and the angle is realized.
Optionally, the vertical scraping conveying device of the heating removing machine continuously conveys materials to the old asphalt ageing layer conveying vehicle located on the lateral lane, and the discharging height and length of the vertical scraping conveying device are matched with the bin of the old asphalt ageing layer conveying vehicle.
The heating milling machine comprises a heating milling machine body, wherein at least two groups of pavement heating walls are arranged at the front part below the heating milling machine body, a pavement milling device is arranged at the rear part of the pavement heating walls, a regenerant spraying device is arranged at the front part of the pavement milling device, and a regenerant heating wall is arranged at the rear part of the pavement milling device.
The automatic feeding and mixing machine comprises a feeding and mixing machine body, wherein a lateral continuous feeding device is arranged at the front part of the feeding and mixing machine body, and a bottom stirring device, an inclined scraper lifting device and an upper stirring device are sequentially arranged at the rear part of the lateral continuous feeding device.
Optionally, the lateral continuous feeding equipment of the feeding remixer is used for continuously feeding materials to the regeneration lane, and the receiving height and length of the lateral continuous feeding equipment are matched with the discharging port of the storage bin of the new asphalt mixture transport vehicle.
In a second aspect, the present invention provides a construction method of an in-situ thermal regeneration unit capable of synchronously implementing aged layer rejection and lateral material addition, as described in any one of the first aspects, including:
Heating the old asphalt pavement by using a pavement heating wall of the hot air heater, wherein the heating depth of the old asphalt pavement is a set first depth range value, the highest temperature of the surface layer of the old asphalt pavement is smaller than or equal to a set first temperature threshold value, and the temperature of the first depth range value in the old asphalt pavement is larger than or equal to a set second temperature threshold value;
continuously heating the old asphalt pavement by using a pavement heating wall of a heating removing machine to ensure that the first depth range value and the second temperature threshold reach the standard;
Raking, removing and laterally conveying an asphalt aging layer with a first depth range value of the heated old asphalt pavement by using an aging layer removing device of a heating removing machine to form an aging layer material pile; the method comprises the steps of vertically lifting an ageing layer material pile by using a vertical scraping conveying device of a heating removing machine, and laterally conveying the ageing layer material pile to a storage bin of an old asphalt ageing layer conveying vehicle, wherein a road surface heating wall and a road surface heat insulation board at the rear of the vertical scraping conveying device respectively heat and insulate old asphalt road surfaces after removing the ageing layers;
The method comprises the steps of continuously heating an old asphalt pavement with an aged layer removed by using a pavement heating wall of a heating milling machine, wherein the heating depth of the old asphalt pavement is a set second depth range value, the highest temperature of the surface layer of the old asphalt pavement is smaller than or equal to a set second temperature threshold value, and the temperature of the second depth range value in the old asphalt pavement is larger than or equal to the set second temperature threshold value;
The method comprises the steps of receiving new asphalt mixture conveyed by a new asphalt mixture conveying vehicle by a storage hopper of lateral continuous adding equipment of an adding remixer, accurately metering the new asphalt mixture by controlling the horizontal scraping plate speed and the opening of a discharging door at the bottom of the storage hopper, completing first-stage mixing of regenerated asphalt mixture and new asphalt mixture by using a bottom stirring device of the adding remixer to form a mixing pile, heating the mixing pile by using a hot air heating wall on the bottom stirring device when the temperature of the mixing pile is smaller than a fifth temperature threshold, continuously conveying the mixing pile to the upper stirring device by using an inclined scraping plate lifting device, completing second-stage full mixing and uniform mixing of the regenerated asphalt pile and the new asphalt mixture by using the upper stirring device, discharging the mixing pile to a receiving hopper of a paver, heating the mixing pile by using a hot air heating wall on the upper stirring device when the temperature of the mixing pile is smaller than the sixth temperature threshold, completing temperature supplementing heating of the mixing pile, and completing spreading and paving by using a hot air heating wall on the upper stirring device after heating, wherein the average temperature of the mixing pile is larger than or equal to the sixth temperature threshold, and completing spreading and pre-pressing by using the spreader.
Compared with the prior art, the invention has the beneficial effects that:
The invention adopts a double-stage hot scarification and spiral conveying process to finish the rejection operation of an aged layer of an asphalt pavement of 5-10 mm at one time, stepless distribution and destruction are realized, the quality of reclaimed materials is improved, a vertical scraping lifting device and rotary conveying device process is adopted to realize the lateral continuous uninterrupted conveying of old asphalt mixtures, the operation efficiency is improved, a double-stage slewing bearing and double-stage spiral conveying structure is adopted to be matched with a semi-hanging type scraper conveying asphalt mixture vehicle for use, the semi-hanging type scraper conveying asphalt mixture vehicle is self-driven on a lateral lane of a reclaimed lane, a discharge port is matched with a first receiving hopper of lateral continuous feeding equipment, the multi-degree-of-freedom and multi-azimuth feeding are realized, the feeding is accurate and continuous, the temperature of the asphalt materials is reduced, a bottom stirring device and top stirring device combined stirring process is adopted, the sufficient stirring time of the asphalt mixtures is ensured, the stirring uniformity is ensured, the novel in-place hot recycling unit is not overweight and flexible and convenient for transition, and safe recycling, high standard and high-quality recycling are realized.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings, in which:
FIG. 1 is a schematic view of the working state of the present invention;
FIG. 2 is a schematic view of a hot air heater according to the present invention;
FIG. 3 is a schematic view of a heat rejecting machine according to the present invention;
FIG. 4 is a schematic view of a heating milling machine of the present invention;
FIG. 5 is a schematic view of the structure of the material adding remixer of the present invention;
FIG. 6 is a schematic view of an burn-in layer removal apparatus according to the present invention;
FIG. 7 (a) is an overall schematic of the vertical scraper conveyor of the present invention;
FIG. 7 (b) is a front view of the vertical scraper conveyor of the present invention;
FIG. 7 (c) is a cross-sectional view A-A of FIG. 7 (b);
FIG. 8 is a schematic diagram of a lateral continuous feeding device according to the present invention;
FIG. 9 is a view showing a state of transportation of the hot air heater of the present invention;
FIG. 10 is a transport state diagram of the heated culling machine of the present invention;
FIG. 11 is a transport state diagram of a heated milling machine of the present invention;
FIG. 12 is a view of the feed back and forth mixer transport state of the present invention;
In the figure, 1, a hot air heater, 1-1, a hot air heater body, 1-2, a pavement heating wall, 1-3, a pavement heat insulation board, 2, a heating removing machine, 2-1, a heating removing machine body, 2-2, an ageing layer removing device, 2-3, a vertical scraping conveying device, 3, an old asphalt ageing layer transporting vehicle, 4, a heating milling machine, 4-1, a heating milling machine body, 4-2, a pavement milling device, 4-3, a regenerant spraying device, 4-4, a regenerant heating wall, 5, a new asphalt mixture transporting vehicle, 6, a feeding remixer, 6-1, a feeding remixer body, 6-2, a lateral continuous feeding device, 6-3, a bottom stirring device, 6-4, an inclined scraping plate lifting device, 6-5, an upper stirring device, 7 and a paver are shown in the figure; 2-2-1, a fixing frame, 2-2-2, a lifting frame, 2-2-3, a lifting cylinder, 2-2-4, a connecting rod, 2-2-5, a scarfing spiral feeder I,2-2-6, a sliding cylinder I,2-2-7, a scarfing spiral feeder II,2-2-8, a sliding cylinder II,2-3, a vertical scraping lifting device, 2-3-1, a vertical lifting frame, 2-3-2, a scraping hopper chain, 2-3-3, a driving shaft, 2-3-4, a driven shaft, 2-3-5, a supporting wheel shaft, 2-3-6, a discharge hole, 2-3-7 and a receiving hopper, 2-3-8 parts of slewing bearing, 2-3-9 parts of spiral feeder, 2-3-10 parts of left and right telescopic sleeves, 2-3-11 parts of left and right telescopic cylinders, 2-3-12 parts of up and down lifting sliding components, 2-3-13 parts of up and down lifting cylinders, 6-1-1 parts of first receiving hopper, 6-1-2 parts of first feeding unit, 6-1-3 parts of first slewing bearing, 6-1-4 parts of second feeding unit, 6-1-5 parts of second receiving hopper, 6-1-6 parts of second slewing bearing, 6-1-7 parts of sliding frame, 6-1-8 parts of storage bin.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The principle of application of the invention is described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 12, the in-situ heat regeneration unit capable of synchronously realizing ageing layer rejection and lateral material addition comprises a hot air heater 1, a heating rejection machine 2, an old asphalt ageing layer transport vehicle 3, a heating milling machine 4, a new asphalt mixture transport vehicle 5, a material adding remixer 6 and a paver 7;
The hot air heater 1, the heating removing machine 2, the heating milling machine 4, the material adding remixer 6 and the paver 7 are all positioned on a regeneration lane and are sequentially arranged front and back, and the old asphalt ageing layer transport vehicle 3 and the new asphalt mixture transport vehicle 5 are both positioned on lateral lanes of the regeneration lane and are respectively close to the heating removing machine 2 and the heating milling machine 4.
As shown in FIG. 2, the hot air heater 1 is provided with 2-3 hot air heaters for heating old asphalt pavement, each hot air heater 1 comprises a hot air heater body 1-1 and a plurality of groups of pavement heating walls 1-2 which are arranged in sequence and positioned below the body, and the tail part of the hot air heater 1 is provided with a pavement heat preservation plate 1-3;
The heating and removing machine 2 is used for removing and conveying aged layers of old asphalt pavement, the heating and removing machine 2 comprises a heating and removing machine body 2-1, at least two groups of pavement heating walls 1-2 are arranged at the front part below the heating and removing machine body 2-1, an aged layer removing device 2-2 is arranged behind the pavement heating walls 1-2, a vertical scraping conveying device 2-3 is arranged behind the aged layer removing device 2-2, the pavement heating walls 1-2 and the pavement heat preservation plates 1-3 are sequentially arranged behind the vertical scraping conveying device 2-3, the vertical scraping conveying device 2-3 of the heating and removing machine 2 continuously conveys materials to a lateral lane, and the discharging height and the discharging length of the vertical scraping conveying device 2-3 are matched with a bin of an old asphalt aged layer conveying vehicle 3.
As shown in fig. 6, the ageing layer removing device 2-2 comprises a fixed frame 2-2-1, a lifting frame 2-2-2, lifting cylinders 2-2-3, connecting rods 2-2-4, a scarfing screw conveyer I2-2-5, a sliding cylinder I2-2-6, a scarfing screw conveyer II2-2-7 and a sliding cylinder II2-2-8, wherein the fixed frame 2-2-1 is fixed on a frame 1, the lifting frame 2-2-2 is connected with the fixed frame 2-2-1 through four groups of connecting rods 2-2-4 to form a parallelogram connecting rod mechanism, cylinder bodies and piston rods of two groups of the lifting cylinders 2-2-3 which are symmetrical left and right are respectively pinned on the fixed frame 2-1 and the lifting frame 2-2-2, the scarfing screw conveyer I2-5 and the scarfing screw conveyer II 2-7 are suspended below the lifting frame 2-2-2 after the front, the cylinder bodies of the sliding cylinder I2-2-6 and the piston rods II are respectively pinned on the lifting frame 2-2-2-8, and the lifting cylinder bodies of the scarfing screw conveyer II-2-2-2-7 respectively. The invention adopts a novel structure of the bidirectional sliding oil cylinder and the C-shaped slideway to realize the extension and folding of the scarfing spiral conveyer, and the scarfing spiral conveyer extends and folds along with the change of the width of the lane to realize the width-changing operation.
As shown in fig. 7 (a) - (c), the vertical scraping and lifting and rotary conveying process is adopted by the vertical scraping and conveying device 2-3, so that the lateral continuous uninterrupted conveying of the old asphalt mixture is realized, and the working efficiency is improved. The vertical scraping lifting device 2-3 comprises a vertical lifting frame 2-3-1, a scraping bucket chain 2-3-2, a driving shaft 2-3-3, a driven shaft 2-3-4, a supporting wheel shaft 2-3-5, a discharge port 2-3-6, a receiving hopper 2-3-7, a slewing bearing 2-3-8, a spiral feeder 2-3-9, a left telescopic sleeve 2-3-10, a left telescopic cylinder 2-3-11, a right telescopic cylinder 2-3-11, an up-down lifting sliding component 2-3-12, an up-down lifting cylinder 2-3-13, an outer cylinder of the left telescopic sleeve 2-3-10 is connected with the frame 1, an inner cylinder is connected with the up-down lifting sliding component 2-3-12, the cylinder body and the piston rod of the left and right telescopic cylinders 2-3-11 are respectively pin-connected with the frame 1 and the up-down lifting sliding component 2-3-12, the up-down lifting sliding component 2-3-12 is nested with the vertical lifting frame 2-3-1, the cylinder body and the piston rod of the up-down lifting cylinder 2-3-13 are respectively pin-connected with the up-down lifting sliding component 2-3-12 and the vertical lifting frame 2-3-1, the up-down lifting sliding component 2-3-12 and the vertical lifting frame 2-3-1 can realize left and right telescopic under the action of the left and right telescopic cylinders 2-3-11, and under the action of the up-down lifting cylinder 2-3-13, the vertical lifting frame 2-3-1 can realize up-down height adjustment along the up-down lifting sliding component 2-3-12, the scraper bucket chain 2-3-2 is arranged in the vertical lifting frame 2-3-1, the driving shaft 2-3-3, the supporting wheel shaft 2-3-5 and the driven shaft 2-3-4 are arranged from top to bottom and are connected with the scraper bucket chain 2-3-2, the discharge port 2-3-6 is positioned at the top of the vertical lifting frame 2-3-1, the upper part of the screw feeder 2-3-9 is provided with the receiving hopper 2-3-7 and is positioned below the discharge port 2-3-6, the screw feeder 2-3-9 is fixed on the vertical lifting frame 2-3-1 through the slewing bearing 2-3-8, and the screw feeder 2-3-9 can realize circular slewing motion under the effect of the slewing bearing 2-3-8 so as to realize the adjustment of the feeding height and the angle.
The heating milling machine 4 is used for heating and milling old asphalt pavement after removing an aging layer, and comprises a heating milling machine body 4-1, wherein at least two groups of pavement heating walls 1-2 are arranged at the front part below the heating milling machine body 4-1, a pavement milling device 4-2 is arranged at the rear part of the pavement heating walls 1-2, a regenerant spraying device 4-3 is arranged at the front part of the pavement milling device 4-2, and a regenerant heating wall 4-4 is arranged at the rear part of the pavement milling device 4-2;
As shown in FIG. 5, the material adding remixer 6 is used for laterally and continuously adding new asphalt mixture and remixing new asphalt mixture, the material adding remixer 6 comprises a material adding remixer body 6-1, lateral continuous material adding equipment 6-2 is arranged at the front part of the material adding remixer body 6-1, and a bottom stirring device 6-3, an inclined scraper lifting device 6-4 and an upper stirring device 6-5 are sequentially arranged at the rear part of the lateral continuous material adding equipment 6-2. The lateral continuous feeding equipment 6-2 of the feeding remixer 6 continuously feeds materials to the recycling lane, and the receiving height and length of the lateral continuous feeding equipment 6-2 are matched with the discharging hole of the storage bin of the new asphalt mixture transport vehicle 5.
As shown in fig. 8, the lateral continuous feeding apparatus 6-1 includes:
The first material conveying unit 6-1-2, wherein a first receiving hopper 6-1-1 is arranged at a material inlet of the first material conveying unit 6-1-2, specifically, the first material conveying unit 6-1-2 is positioned above the material inlet of the first material conveying unit 6-1-2, and the first material conveying unit 6-1-2 can be a first spiral material conveyer;
The second material conveying unit 6-1-3 is connected with the first material conveying unit 6-1-2 through a first slewing bearing 6-1-3, a material inlet of the second material conveying unit corresponds to a material outlet of the first material conveying unit 6-1-2, and the second material conveying unit 6-1-4 can adopt a second spiral material conveyer;
The second receiving hopper 6-1-5 is positioned below the discharge port of the second material conveying unit 6-1-4, specifically, the second material conveying unit 6-1-4 is in pin joint with the second receiving hopper 5, and the discharge port of the second material conveying unit 6-1-4 is positioned right above the second receiving hopper 5;
The sliding frame 6-1-7 is connected with the second receiving hopper 6-1-5 through a second slewing bearing 6-1-6;
the storage bin 6-1-8 is connected with the sliding frame 6-1-7, and a feed inlet of the storage bin is corresponding to a discharge outlet of the second receiving hopper 6-1-5 and is used for storing materials, wherein in the concrete implementation, the storage bin 6-1-8 can be a V-shaped storage bin 6-1-8, and the bottom cross section is smaller than the top cross section;
the cylinder body of the amplitude variation oil cylinder 6-1-9 is connected with the second receiving hopper 6-1-5, and the piston rod of the amplitude variation oil cylinder is connected with the second material conveying unit 6-1-4.
In summary, under the action of the amplitude varying oil cylinder 6-1-9, the second material conveying unit 6-1-4 drives the first material conveying unit 2 and the first slewing bearing 6-1-3 to perform amplitude varying adjustment within a range of 45 degrees, under the action of the first slewing bearing 6-1-3, the first material receiving hopper 6-1-1 and the first material conveying unit 6-1-2 can realize 360-degree slewing operation with respect to the maximum angle, and under the action of the second slewing bearing 6-1-6, the second material conveying unit 6-1-4 can realize 180-degree slewing operation with respect to the maximum angle.
Example 2
The construction method of the in-situ thermal regeneration unit capable of synchronously realizing the removal of the ageing layer and the lateral material addition comprises the following steps:
step S1, heating an old asphalt pavement by using a plurality of groups of pavement heating walls 1-2 of a hot air heater 1, wherein the heating depth of the old asphalt pavement is a set first depth range value (5-10 mm), the highest temperature of the surface layer of the old asphalt pavement is smaller than or equal to a set first temperature threshold value (180-200 ℃), and the temperature at the first depth range value in the old asphalt pavement is larger than or equal to a set second temperature threshold value (110-130 ℃);
Step S2, continuously heating the old asphalt pavement by using a pavement heating wall 1-2 of a heating remover 2 to ensure that a first depth range value (5-10 mm) and a second temperature threshold value (110-130 ℃) reach the standard, raking, removing and laterally conveying an asphalt aging layer of the heated old asphalt pavement with the first depth range value (5-10 mm) by using an aging layer removing device 2-2 in the heating remover to form an aging layer material pile, vertically lifting and laterally conveying the aging layer material pile to a storage bin of an old asphalt aging layer transport vehicle 3 by using a vertical scraping conveying device 2-3 in the heating remover, and respectively heating and preserving the old asphalt pavement after removing the aging layer by using a pavement heating wall 1-2 and a pavement heat preservation plate 1-3 behind the vertical scraping conveying device 2-3;
Step S3, continuously heating the old asphalt pavement after removing the aged layer by using a pavement heating wall 1-2 of a heating milling machine 4, wherein the heating depth of the old asphalt pavement is a set second depth range value (40-50 mm), the highest temperature of the surface layer of the old asphalt pavement is smaller than or equal to a set second temperature threshold value (180-200 ℃), the temperature at the second depth range value in the old asphalt pavement is larger than or equal to the set second temperature threshold value (110-130 ℃), then spraying a regenerant to the heated old asphalt pavement by using a regenerant spraying device 4-3 of the heating milling machine 4, and then carrying out hot milling on the old asphalt pavement in the second depth range by using the pavement milling device 4-2 to form a regenerated material pile, wherein the temperature of the regenerated material pile is larger than or equal to a third set temperature threshold value (120-130 ℃), and the regenerated material heating wall 4-4 carries out material separation-heating-aggregate to realize secondary temperature lifting so that the regenerated material temperature is larger than or equal to a fourth set temperature threshold value (130-140 ℃);
S4, the receiving hopper of the lateral continuous feeding equipment 6-2 of the feeding remixer 6 is used for being in butt joint with the discharging port of the storage bin of the new asphalt mixture transport vehicle 5, the new asphalt mixture is transported to the storage hopper of the feeding remixer 6 through a lateral feeding screw, and the accurate measurement of the new asphalt mixture is realized by controlling the horizontal scraping plate speed and the opening of the discharging door at the bottom of the storage hopper; the method comprises the steps of completing first-stage mixing of regenerated material pile mixture and new asphalt mixture by using a bottom stirring device 6-3 of a material adding remixer 6, forming a mixture pile, when the temperature of the mixture pile is smaller than a set fifth temperature threshold (140-150 ℃), carrying out temperature supplementing heating on the mixture by using a hot air heating wall on the bottom stirring device 6-3, continuously conveying the mixture pile into an upper stirring device 6-5 by using an inclined scraper lifting device 6-4, completing second-stage full mixing and uniform mixing of the regenerated material pile mixture and the new asphalt mixture by using the upper stirring device 6-5, discharging the mixture to a receiving hopper of a paver 7, and when the temperature of the mixture pile is smaller than the set sixth temperature threshold (150-160 ℃), carrying out temperature supplementing heating on the mixture by using a hot air heating wall on the upper stirring device 6-5, wherein the average temperature of the mixture after heating is larger than or equal to the sixth temperature threshold, and then completing material distribution, paving and paving by using a paving machine 7 screw and a paving flat road roller, and compacting to obtain a regenerated pavement.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
The invention provides an in-situ heat regeneration unit capable of synchronously removing an ageing layer and laterally adding materials, which adopts a double-stage hot scarification and material conveying spiral process to finish the removing operation of the ageing layer of a 5-10 mm asphalt pavement at one time, is subjected to stepless distribution and damage, improves the quality of regenerated materials, adopts a vertical scraping lifting device and rotary material conveying device process to realize the lateral continuous uninterrupted conveying of old asphalt mixture, improves the operation efficiency, adopts a double-stage slewing bearing and double-stage material conveying spiral new structure, is matched with a semi-hanging type scraper conveying asphalt mixture vehicle for use, and is matched with a first receiving hopper of a lateral continuous material adding device to realize multi-degree multi-of-freedom multi-azimuth feeding, the feeding is accurate and continuous, the temperature of the asphalt mixture is reduced, adopts a combined stirring process of a bottom stirring device and a top stirring device, ensures the sufficient stirring time of the asphalt mixture, ensures the stirring uniformity, and the novel in-situ heat regeneration unit is not overweight, is flexible and convenient to transfer, and realizes safe regeneration, high standard and high-quality regeneration.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
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| CN112663474A (en) * | 2021-01-20 | 2021-04-16 | 江苏集萃道路工程技术与装备研究所有限公司 | Heater and equipment is rejected on bituminous paving ageing layer thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7458645B2 (en) * | 2006-12-01 | 2008-12-02 | Hall David R | Milling machine with cleaning moldboard |
| CN201753425U (en) * | 2010-08-17 | 2011-03-02 | 南京英达公路养护车制造有限公司 | Multi-function bituminous paving on-site heating regeneration vehicle |
| SE542482C2 (en) * | 2017-02-28 | 2020-05-19 | Adelo Ab | An apparatus and method of improving the quality of an asphalt pavement |
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| CN204224974U (en) * | 2014-10-31 | 2015-03-25 | 英达热再生有限公司 | A kind of loose rake device on flexible pavement circular regeneration paver |
| CN104480842A (en) * | 2014-12-05 | 2015-04-01 | 熊达煜 | Highway waste asphalt removing and regenerating construction integrated device and construction method thereof |
| CN109183583A (en) * | 2018-09-29 | 2019-01-11 | 江苏集萃道路工程技术与装备研究所有限公司 | It is layered hot milling equipment, the complete unit of the compound in-situ heat regeneration of hot wind and microwave and its construction in layer method |
| CN112663474A (en) * | 2021-01-20 | 2021-04-16 | 江苏集萃道路工程技术与装备研究所有限公司 | Heater and equipment is rejected on bituminous paving ageing layer thereof |
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