CN109594451B - Movable type regenerated asphalt mixture cold stirring equipment and method for highway construction - Google Patents
Movable type regenerated asphalt mixture cold stirring equipment and method for highway construction Download PDFInfo
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- CN109594451B CN109594451B CN201910080976.7A CN201910080976A CN109594451B CN 109594451 B CN109594451 B CN 109594451B CN 201910080976 A CN201910080976 A CN 201910080976A CN 109594451 B CN109594451 B CN 109594451B
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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
- E01C19/02—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 preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
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Abstract
The invention relates to a mobile regenerated asphalt mixture cold stirring device and a method for highway construction, belonging to the technical field of road and bridge construction equipment, wherein the equipment comprises a bearing platform, a screening device, a stirring device and a feeding device for conveying screened materials into the stirring device are arranged on the bearing platform, a screen with adjustable grid clearance is arranged in the screening device, and a guide plate for changing the flow direction of the materials is arranged at a discharge hole of the screening device; the stirring device comprises a shell, a heating part, a regeneration ring and a stirring part, wherein a supporting roller is arranged below the shell, and the heating part, the regeneration ring and the stirring part are respectively arranged at a feeding port, a middle part and a discharging port of the stirring device. In order to realize the high concentration of the functions of the equipment, the screen with adjustable grid gaps is adopted as a tool for screening aggregates and reclaimed materials respectively, so that the using amount of the equipment is reduced, the requirement on the amount of the carrying platform is lowered, and the purpose of carrying by using the carrying platform is realized.
Description
Technical Field
The invention relates to the technical field of road and bridge construction equipment, in particular to mobile regenerated asphalt mixture cold stirring equipment and a method for road construction.
Background
The asphalt mixture is a general term of a mixture formed by mixing mineral aggregate and asphalt binder, and is divided into continuous gradation and discontinuous gradation mixtures according to the material composition and structure, dense gradation, semi-open gradation and open gradation mixtures according to the mineral aggregate gradation composition and the void ratio, wherein the mixture can be divided into extra coarse type (nominal maximum particle size is larger than 37.5mm), coarse type (nominal maximum particle size is 26.5mm or 31.5mm), medium type (nominal maximum particle size is 16mm or 19mm), fine type (nominal maximum particle size is 9.5mm or 13.2mm), sand type (nominal maximum particle size is smaller than 9.5mm) asphalt mixtures, and the mixture can be divided into hot-mix asphalt mixtures, cold-mix asphalt mixtures, recycled asphalt mixtures and the like according to the manufacturing process.
The most common types of asphalt mixtures used in engineering are two: one is asphalt concrete mixture, which is mixture of mineral aggregate in proper proportion, coarse aggregate, fine aggregate and stuffing, and asphalt binder and has residual porosity lower than 10%; the other is a bituminous macadam mixture, which is a mixture with residual porosity of more than 10% after mixing and compacting coarse aggregates, fine aggregates and fillers (or no fillers) in a proper proportion with bitumen, and is called as a bituminous macadam mixture for short. At present, China roads generally face to renovation, a large amount of crushed stone and asphalt waste materials are generated after a large amount of old pavements are cleaned, how to add the crushed stone and asphalt waste materials into newly built roads to realize recycling is a requirement of environmental protection in a new period, and is an important development direction for reducing renovation cost.
Through search, there is a patent of a stirring method of a reclaimed asphalt mixture, the application number of which is 2012101540883, the publication date of which is 6/18/2014, and the disclosed method comprises the following steps: crushing the regenerated reclaimed material once in a cold state; the reclaimed materials enter the drying cylinder through the regeneration ring and are heated and softened with new aggregate; the recycled asphalt mixture obtained after mixing the recycled materials with the new aggregate enters a continuous double-shaft stirring pot for stirring and friction, and the recycled materials are secondarily crushed; the recycled asphalt mixture flows out of a discharge port of the continuous double-shaft stirring pot, enters a feed port of an aggregate elevator, and is fed into a vibrating screen by the aggregate elevator for screening. However, the invention has the following disadvantages: firstly, the screening operation is performed after the mixture of the aggregates and the asphalt is formed, the asphalt is adhered to the aggregates at the moment, the asphalt is often adhered to a screen, the screening work is difficult to perform, cleaning is required to be performed from time to time, and the difficulty of cleaning is high, so that the screening effect and the working efficiency are greatly reduced; secondly, the technical scheme aims at plant mixing equipment, and the stirring flexibility is limited because the equipment quantity required for realizing the whole technical scheme is large and is not suitable for being loaded and used by a movable carrier.
In order to better solve the problems of sufficient stirring and smooth screening of cold materials on a movable carrying platform in the mixing and stirring process of aggregate and reclaimed materials, people urgently need a technical scheme for cold stirring of reclaimed asphalt mixtures, which is reasonable in equipment layout and scientific in processing flow.
Disclosure of Invention
1. Problems to be solved
Aiming at the problems that in the prior art, asphalt reclaimed material mixing and stirring equipment is large in size and not easy to place on a moving platform, the invention provides the mobile reclaimed asphalt mixture cold stirring equipment and the method for highway construction.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A mobile regenerated asphalt mixture cold stirring device for highway construction comprises a bearing platform, wherein a screening device, a stirring device and a feeding device for conveying screened materials into the stirring device are arranged on the bearing platform, a screen with adjustable grid gap is arranged in the screening device, a guide plate for changing the flow direction of the materials is arranged at a discharge port of the screening device, and a guide adjusting mechanism of the guide plate is associated with a gap adjusting mechanism of the screen; the stirring device comprises a shell, a heating part, a regeneration ring and a stirring part, wherein the shell is of a cylindrical structure, a supporting roller is arranged below the shell, and the heating part, the regeneration ring and the stirring part are respectively arranged at a feeding port, the middle part and a discharging port of the stirring device; the stirring part comprises a groove body structure which is arranged on the surface of the shell and protrudes towards the inside of the shell, the inner side surface of the groove body is provided with a powder hole, and powder is arranged in the groove body; the feeding device comprises a first conveying belt and a second conveying belt; one end of the first conveying belt is positioned at one side of the guide plate, and the other end of the first conveying belt extends to a feeding port of the regeneration ring; one end of the second conveying belt is located on the other side of the guide plate, and the other end of the second conveying belt extends to a feeding port of the stirring device.
Preferably, the screen comprises fixed grid strips and movable grid strips, wherein the fixed grid strips are sleeved with counterweight strips, the other ends of the counterweight strips are provided with ring sleeves, and the distance between the fixed grid strips is twice the length of the counterweight strips; the screening plant includes the reel, be equipped with the through-hole of a word arrangement on the reel, fixed grid strip is installed in some through-holes, the mode that activity grid strip alternates passes ring cover and another part through-hole through the activity.
Preferably, a short arm push rod is arranged at the end part of the rotating shaft of the guide plate; the end parts of the fixed grid bars are provided with rotating blocks, a parallelogram mechanism is formed between the rotating blocks, one rotating block is hinged with a long-arm push rod, and the other end of the long-arm push rod is hinged with a short-arm push rod.
Preferably, the lower side in the screening device is provided with a crushing roller.
Preferably, the heating part comprises an L-shaped material raising plate mounted on the inner wall of the shell; a condenser is arranged outside the shell; an evaporator is arranged outside the stirring device, a liquid outlet of the condenser is communicated with a liquid inlet of the evaporator through a pipeline, and an expansion valve is arranged; the liquid inlet of the condenser is communicated with the liquid outlet of the evaporator through a pipeline, and a compressor is arranged; refrigerant is filled in the pipeline.
Preferably, a circle of material passing holes are formed in the surface of the middle part of the shell, and abrasive material blocks are arranged in the material passing holes; the regeneration ring is arranged on the outer side of the middle part of the shell and seals the material passing hole, and a feeding hole is formed in the upper part of the regeneration ring.
Preferably, a transverse barrier strip is arranged at a feed inlet of the regeneration ring; the grinding material block is triangular, the tip structure of the triangle is arranged towards the rolling direction of the shell, and the outer side face of the grinding material block is provided with a texture structure.
Preferably, a platform for bearing the support rollers is arranged at the lower part of one end of the discharge port of the shell, and the lower end of the platform is connected with a hydraulic rod.
A mobile regenerated asphalt mixture cold stirring method for highway construction comprises the following steps:
s1, screening aggregate: rotating a parallelogram mechanism at the end part of the fixed grid strip, rotating the balance weight strip on the fixed grid strip to a horizontal position to enable the ring sleeve to be coaxially aligned with the corresponding through hole on the screening device, then inserting the movable grid strip into the corresponding through hole and the ring sleeve to enable the movable grid strip and the fixed grid strip to jointly form a more dense screen structure, and screening aggregate;
s2, crushing and conveying the aggregate: the aggregate passing through the screen mesh is further crushed by a crushing roller to form aggregate particles; conveying the aggregate particles to a second conveying belt by using a guide plate, and further conveying the aggregate particles to a feeding port of a stirring device by the second conveying belt;
s3, heating and drying aggregate: starting a compressor, enabling a refrigerant to circularly flow in a pipeline according to the operation principle of an air conditioner, enabling a condenser to release heat around a heating part, heating and drying aggregate particles in a shell, and stirring and lifting the aggregate particles by an L-shaped lifting plate along with the rotation of the shell so as to fully heat and dry the aggregate; the L-shaped lifting plate is obliquely arranged so as to push the aggregate forwards by utilizing the oblique posture of the L-shaped lifting plate;
s4, material waiting: lifting a discharge port of the shell by using a hydraulic cylinder, so that the aggregate continuously flows in the heating part without being pushed forward, and waiting for the reclaimed materials to enter from a feed port of the reclaiming ring;
s5, screening the reclaimed materials: the movable grid bars are drawn out of the through holes, the fixed grid bars are left to form a large-gap screen, and then the regenerated material is screened by the large-gap screen, so that the construction characteristics of generally large regenerated material particles are adapted;
s6, crushing and conveying reclaimed materials: the evaporator absorbs heat around the screening device, so that the temperature of the screening device and the reclaimed materials in the screening device is reduced, the viscosity of asphalt is reduced, and the cold crushing effect is improved; after the movable grid strips are drawn out, the balance weight strips naturally droop, the parallelogram mechanism resets, the long arm push rod drives the short arm push rod to rotate, the guide plate is guided to the other side, the crushed regenerated material is guided to the first conveying belt through the guide plate, is lifted to a material inlet of the regeneration ring through the first conveying belt and enters the regeneration ring;
s7, secondary crushing of the reclaimed materials: after the reclaimed materials enter the regeneration ring, the uncrushed strip reclaimed materials vertically and downwards enter the shell along the length direction under the dredging action of the barrier strips, and the abrasive blocks break and push the accumulated reclaimed materials into the shell and further crush the reclaimed materials;
s8, mixing and stirring: the hydraulic cylinder is decompressed, the shell is reset, the aggregate and the reclaimed materials are mixed at the middle part, the hot aggregate generates heat radiation to the reclaimed materials, the reclaimed materials are heated, and the viscous structure is recovered, so that the residual asphalt is uniformly adhered to the surface of the aggregate, and the aggregate pile which is uniformly adhered with the asphalt is formed for later use.
Preferably, a pipeline for supplying steam to the heating part is communicated with the shell; a vibration motor is arranged outside the screening device; after the aggregate enters the stirring part, the aggregate is further raised and stirred by a groove body structure protruding towards the inside of the shell, powder arranged in the groove body permeates to the inner surface of the groove body through powder holes in the groove body, and the aggregate adhered with asphalt is prevented from being adhered to the groove body.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) in order to realize the high concentration of the functions of the equipment, the screen with adjustable grid clearance is adopted as a tool for screening aggregate and reclaimed materials (namely crushed old road waste materials), so that the using amount of the equipment is reduced, the requirement on the amount of the carrying platform is reduced, the purpose of carrying by using the carrying platform is realized, and the actual requirement of frequent flow operation construction of engineering projects is easily met.
(2) According to the invention, the baffle is arranged on the fixed grid strip, so that when the crushing roller rolls aggregate, the crushed aggregate is prevented from splashing to accidentally injure others by using the baffle, and as the counterweight strip is arranged on the fixed grid strip, when the material is accumulated on the baffle, the counterweight strip is tilted to a horizontal state by using the fixed grid strip, when the material enters the screen frame, the counterweight strip can reset by using the dead weight of the material and returns to a sagging state, the counterweight strip moves the fixed grid strip to rotate and reset, the baffle is closed again, the dust generated by rolling is prevented from being raised, and the environment-friendly requirement is met.
(3) The through holes are formed in the screen frame, the ring sleeves are arranged at the end parts of the balance weight strips, the ring sleeves can rotate to the positions coaxial with the corresponding through holes, the movable grid strips can be conveniently inserted into the ring sleeves in sequence, the balance weight strips are kept in the horizontal position, the movable grid strips are fixed between the fixed grid strips, and the balance weight strips and the movable grid strips jointly form a part of the screen mesh to form a more compact mesh structure.
(4) The end parts of the fixed grid bars are provided with the parallelogram mechanisms, and the parallelogram mechanisms can enable all the fixed grid bars to keep consistent rotating angles, so that all the ring sleeves rotate to positions coaxial with the corresponding through holes simultaneously; still articulated in proper order have long arm push rod and short arm push rod on this parallelogram mechanism, utilize the short arm push rod to drive the deflector and rotate, the screen cloth in cooperation different clearances forms the inclination of different direction, with the different positions of material direction, satisfies the processing needs of transmitting different materials, and equipment overall action is harmonious unanimous, and degree of automatic cooperation is high, and production efficiency obtains effectively promoting.
(5) The stirring device of the invention forms the material passing hole in the middle part, so that the reclaimed materials in the regeneration ring can conveniently enter the shell, and in order to avoid insufficient filtering of the screen mesh, the triangular abrasive block is also arranged in the material passing hole, and on one hand, the abrasive block can further crush the reclaimed materials, on the other hand, the reclaimed materials can be separated, so that the reclaimed materials adhered with asphalt can be prevented from entering the shell with higher temperature to be adhered into a mass mutually to influence the mixing effect.
(6) According to the invention, the discharge port of the shell is provided with the circumferential groove body protruding towards the inside of the shell, the side wall of the groove body is provided with the powder hole, and after the groove body is filled with powder, the powder enters the shell through the powder hole, so that aggregate adhered with asphalt or mixture is prevented from being adhered around the groove body, and the protruding groove body can play a continuous stirring effect on the mixture.
(7) The invention adopts the refrigerant circulating system comprising the evaporator and the refrigerator to carry out heat allocation, realizes that the heat energy near the screen frame is transferred to the stirring device to heat the reclaimed materials, melts the asphalt, is beneficial to uniformly adhering all aggregates to the asphalt, improves the paving uniformity of the asphalt, also reduces the concentration degree of the asphalt in the reclaimed materials, prevents the reclaimed materials from being bonded into lumps, fully utilizes energy sources, and achieves the effects of energy conservation and environmental protection.
Drawings
FIG. 1 is a perspective view from a side view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a perspective view from another side of the present invention;
FIG. 4 is a top view of the present invention;
fig. 5 is a cross-sectional view taken along line a-a of fig. 4.
In the figure:
1. a load-bearing platform;
2. a screening device; 201. a screen frame; 202. a through hole; 203. crushing rollers;
3. a stirring device; 301. a housing; 3011. a material passing hole; 3012. a grinding material block; 302. a heating section; 3021. an L-shaped material raising plate; 303. a regeneration ring; 304. a stirring section; 3041. a trough body; 3042. powder holes; 305. blocking strips;
4. a feeding device; 401. a first conveyor belt; 402. a second conveyor belt;
5. screening a screen; 501. fixing the grid bars; 502. moving the grid bars; 503. a weight strip; 504. sleeving a ring; 505. a long arm push rod; 506. rotating the block; 507. a baffle plate;
6. a guide plate; 601. a short arm push rod;
7. supporting the rollers;
8. a hydraulic rod.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
As shown in fig. 1 to 5, the mobile recycled asphalt mixture cold stirring equipment for road construction comprises a bearing platform 1, wherein a screening device 2 for screening aggregate and recycled material, a stirring device 3 for fully mixing the aggregate and the recycled material, and a feeding device 4 for conveying the screened material into the stirring device 3 are arranged on the bearing platform 1.
The screening device 2 is internally provided with a screen 5 with adjustable grid clearance size, the screen 5 comprises a fixed grid strip 501 and a movable grid strip 502, the fixed grid strip 501 is sleeved with a baffle 507 and a counterweight strip 503, the baffle 507 can prevent crushed aggregates from splashing to accidentally injure other people when a crushing roller rolls the aggregates, and the counterweight strip 503 is arranged on the fixed grid strip 501, and the counterweight strip 503 can reset by using the self weight of the counterweight strip 503, namely, the counterweight strip returns to a drooping state, so that after feeding is finished, no accumulated materials exist on the baffle 507, the baffle 507 is not stressed by the pressure of the materials, the baffle 507 does not use the fixed grid strip 501 to tilt the counterweight strip 503 to a horizontal state, the counterweight strip 503 drives the fixed grid strip 501 to rotate and reset, the baffle 507 is closed again, particles or dust generated by rolling can be prevented from flying, and the purpose of meeting the requirement of environmental protection is achieved; the other end of the counterweight strip 503 is provided with a ring sleeve 504, and the distance between the fixed grid strips is twice the length of the counterweight strip 503; the screening device 2 specifically comprises a screen frame 201, through holes 202 arranged in a straight line are formed in the screen frame 201, the fixed grid strips 501 are installed in one part of the through holes 202, the movable grid strips 502 penetrate through the ring sleeve 504 and the other part of the through holes 202 in a movable penetrating mode to keep the counterweight strips in a horizontal position, and the movable grid strips 502 are also kept in the horizontal position, so that a more compact screen structure is formed, and aggregates are screened more finely; when screening the reclaimed materials, the movable grid bars are taken out to form a screening grid with larger gaps, so that the requirement of diversified screening of different materials is met by using one set of screening equipment.
A crushing roller 203 is arranged at the lower side inside the screening device 2, and is used for further crushing the materials to form denser particles, so that the bonding density of the mixture is improved, and the structural strength of the paved road surface is further improved; the discharge gate department of screening plant 2 is equipped with deflector 6 that changes the material flow direction, the direction adjustment mechanism of deflector 6 is relevant with the clearance adjustment mechanism of screen cloth 5, the concrete mode of relevance is: the pivot tip of direction deflector 6 is equipped with short arm push rod 601, the tip of fixed grid 501 all is equipped with changes the piece 506, it constitutes parallelogram mechanism to change between the piece 506, and it has long arm push rod 505 to articulate on one of them commentaries on classics piece 506, the other end and the short arm push rod 601 of long arm push rod 505 are articulated, and when the screen cloth forms different grid structure, change piece 506 and rotate, utilize long arm push rod 505 to drive short arm push rod 601 and rotate, and then the rotation axis that promotes the deflector rotates, and the deflector rotates simultaneously, and different positions of the different material direction of different screening demands are different automatically.
The stirring device 3 comprises a shell 301, a heating part 302, a regeneration ring 303 and a stirring part 304, wherein the shell 301 is of a cylindrical structure, a supporting roller 7 is arranged below the shell 301, and the shell 301 rotates under the support of the supporting roller 7 under the drive of external force to mix materials in the shell 301; the heating part 302, the regeneration ring 303 and the stirring part 304 are respectively arranged at a feeding port, a middle part and a discharging port of the stirring device 3, and materials are subjected to different processing operations when passing through different positions.
A condenser is arranged outside the shell 301, an evaporator is arranged outside the stirring device 3, a liquid outlet of the condenser is communicated with a liquid inlet of the evaporator through a pipeline, an expansion valve is arranged, a liquid inlet of the condenser is communicated with a liquid outlet of the evaporator through a pipeline, a compressor is arranged, a refrigerant is communicated in the pipeline, an air conditioning system is formed by the above structure arrangement, the refrigerant transfers heat absorbed at the evaporator to the condenser for releasing through circulation, heat energy near the screen frame is transferred to the stirring device, asphalt at the screening device is solidified, is not easy to adhere to the screen and is easy to break; the asphalt at the heating part 302 is heated and melted, so that all aggregates can be favorably and uniformly adhered to the asphalt, the distribution uniformity of the asphalt is improved, the concentration degree of the asphalt in the reclaimed materials is reduced, the reclaimed materials are prevented from being bonded into a mass, meanwhile, the full utilization of energy is realized, and the effects of energy conservation and environmental protection are achieved; the heating part 302 includes an L-shaped lifting blade 3021 installed on an inner wall of the housing 301, and the aggregate is sufficiently lifted by the L-shaped lifting blade 3021, so that evaporation of moisture in the aggregate is accelerated, and drying of the aggregate is promoted.
A circle of material passing holes 3011 are formed in the surface of the middle of the shell 301, and abrasive blocks 3012 are arranged in the material passing holes 3011; the regeneration ring 303 is arranged at the outer side of the middle part of the shell 301, and seals the material passing hole 3011 to prevent the leakage of the regenerated material, a material inlet of the regenerated material is arranged at the upper part of the regeneration ring 303, a transverse barrier strip 305 is arranged at the material inlet of the regeneration ring 303, the barrier strip 305 plays a role of filtering the regenerated material on one hand, and can dredge the strip-shaped regenerated material into a vertical state on the other hand so as to be crushed by the grinding material block 3012; the abrasive block 3012 is triangular, the tip structure of the triangle is arranged towards the rolling direction of the shell 301, so that the reclaimed materials are rolled and separated, and the reclaimed materials adhered with asphalt are prevented from entering the shell with higher temperature and being adhered to each other to form a cluster, so that the mixing effect is prevented from being influenced; furthermore, the outer side surface of the abrasive block 3012 is provided with a texture structure to improve the grinding performance of the abrasive block 3012.
The stirring part 304 comprises a groove 3041 structure which is arranged on the surface of the shell 301 and protrudes towards the inside of the shell 301, a powder hole 3042 is arranged on the inner side surface of the groove 3041, and powder is arranged in the groove 3041; after the tank body is filled with powder, the powder enters the shell through the powder holes 3042, so that aggregates or mixture adhered with asphalt is prevented from being adhered around the tank body 3041, and the protruded tank body 3041 structure can play a continuous stirring effect on the mixture.
The feeding device 4 comprises a first conveyor belt 401 and a second conveyor belt 402; one end of the first conveying belt 401 is positioned at one side of the guide plate 6, and the other end of the first conveying belt 401 extends to a feeding port of the regeneration ring 303; one end of the second conveyor belt 402 is located at the other side of the guide plate 6, and the other end of the second conveyor belt 402 extends to the feeding port of the stirring device 3.
A platform for bearing the supporting rollers 7 is arranged at the lower part of one end of the discharge hole of the shell 301, and the lower end of the platform is connected with a hydraulic rod 8.
A mobile regenerated asphalt mixture cold stirring method for highway construction comprises the following steps:
s1, screening aggregate: rotating a parallelogram mechanism at the end part of the fixed grid bar 501, rotating a counterweight bar 503 on the fixed grid bar 501 to a horizontal position to enable the ring sleeve 504 to be coaxially aligned with the corresponding through hole 202 on the screening device 2, then inserting the movable grid bar 502 into the corresponding through hole 202 and the ring sleeve 504 to enable the movable grid bar 502 and the fixed grid bar 501 to jointly form a more dense screen 5 structure, and screening aggregate;
s2, crushing and conveying the aggregate: the aggregates passing through the screen 5 are further crushed by the crushing roller 203 to form aggregate particles; the aggregate particles are conveyed to the second conveying belt 402 by the guide plate 6 and then conveyed to a feeding port of the stirring device 3 by the second conveying belt 402;
s3, heating and drying aggregate: starting a compressor, enabling a refrigerant to circularly flow in a pipeline according to the operation principle of an air conditioner, enabling a condenser to release heat around a heating part 302, heating and drying aggregate particles in the shell 301, and stirring and lifting the aggregate particles by an L-shaped lifting plate 3021 along with the rotation of the shell 301 so as to fully heat and dry the aggregate; the L-shaped material raising plate 3021 is obliquely arranged to push the aggregate forwards by utilizing the oblique posture of the L-shaped material raising plate 3021;
s4, material waiting: lifting the discharge port of the shell 301 by using a hydraulic cylinder, so that the aggregate continuously flows in the heating part 302 without being pushed forward, and waiting for the reclaimed materials to enter from the feed port of the reclaiming ring 303;
s5, screening the reclaimed materials: the movable grid strips 502 are drawn out from the through holes 202, the fixed grid strips 501 are left to form a screen 5 with a large gap, and then the screen 5 with the large gap is used for screening the reclaimed materials, so that the construction characteristics of the reclaimed material particles which are generally large are adapted;
s6, crushing and conveying reclaimed materials: the evaporator absorbs heat around the screening device 2, so that the temperature of the screening device 2 and the reclaimed materials in the screening device is reduced, the viscosity of asphalt is reduced, and the cold crushing effect is improved; after the movable grid strips 502 are pulled out, the balance weight strips 503 naturally droop, the parallelogram mechanism resets, the long arm push rod 505 is used for driving the short arm push rod 601 to rotate, the guide plate 6 is guided to the other side, the crushed regenerated material is guided to the first conveying belt 401 through the guide plate 6, is lifted to the feeding port of the regeneration ring 303 through the first conveying belt 401, and enters the regeneration ring 303;
s7, secondary crushing of the reclaimed materials: after the reclaimed materials enter the regeneration ring 303, the uncrushed strip-shaped reclaimed materials vertically and downwards enter the shell 301 along the length direction under the dredging action of the barrier strips 305, and the grinding material blocks 3012 break away and push the accumulated reclaimed materials into the shell 301 for further crushing;
s8, mixing and stirring: with the pneumatic cylinder pressure release, casing 301 resets, and aggregate and reclaimed material begin to mix at the middle part, and hot aggregate produces the heat radiation to the reclaimed material, with the reclaimed material heating, resumes viscous structure to evenly glue on the aggregate surface with remaining pitch, form the aggregate heap that all adheres to pitch, it is reserve.
A pipeline for supplying steam to the heating part 302 is communicated with the shell 301; a vibration motor is arranged outside the screening device 2; after the aggregates enter the stirring part 304, the aggregates are further lifted and stirred by the structure of the groove 3041 protruding towards the inside of the shell 301, powder arranged in the groove 3041 permeates to the inner surface of the groove 3041 through the powder holes 3042 on the groove 3041, and the aggregates adhered with asphalt are prevented from being adhered to the groove 3041.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which shall fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a highway construction is with cold agitated vessel of portable regeneration bituminous mixture, includes load-bearing platform (1), be equipped with screening plant (2), agitating unit (3) on load-bearing platform (1) and be used for carrying material feeding unit (4) to agitating unit (3) in with the material that sieves out, its characterized in that: a screen (5) with adjustable grid gap is arranged in the screening device (2), a guide plate (6) for changing the flow direction of the material is arranged at a discharge port of the screening device (2), and a guide adjusting mechanism of the guide plate (6) is connected with a gap adjusting mechanism of the screen (5);
the stirring device (3) comprises a shell (301), a heating part (302), a regeneration ring (303) and a stirring part (304), wherein the shell (301) is of a cylindrical structure, a supporting roller (7) is arranged below the shell (301), and the heating part (302), the regeneration ring (303) and the stirring part (304) are respectively arranged at a feeding port, the middle part and a discharging port of the stirring device (3); the stirring part (304) comprises a groove body (3041) structure which is arranged on the surface of the shell (301) and protrudes towards the interior of the shell (301), a powder hole (3042) is arranged on the inner side surface of the groove body (3041), and powder is arranged in the groove body (3041);
the feeding device (4) comprises a first conveyor belt (401) and a second conveyor belt (402); one end of the first conveying belt (401) is positioned at one side of the guide plate (6), and the other end of the first conveying belt (401) extends to a feeding port of the regeneration ring (303); one end of the second conveying belt (402) is positioned at the other side of the guide plate (6), and the other end of the second conveying belt (402) extends to a feeding port of the stirring device (3).
2. The mobile recycled asphalt mixture cold stirring device for road construction according to claim 1, which is characterized in that: the screen (5) comprises fixed grid bars (501) and movable grid bars (502), wherein counterweight bars (503) are sleeved on the fixed grid bars (501), ring sleeves (504) are arranged at the other ends of the counterweight bars (503), and the distance between the fixed grid bars is twice the length of the counterweight bars (503); the screening device (2) comprises a screen frame (201), through holes (202) which are arranged in a straight line are formed in the screen frame (201), the fixed grid strips (501) are installed in one part of the through holes (202), and the movable grid strips (502) penetrate through the ring sleeve (504) and the other part of the through holes (202) in a movable penetrating mode.
3. The mobile recycled asphalt mixture cold stirring device for road construction according to claim 2, which is characterized in that: a short arm push rod (601) is arranged at the end part of the rotating shaft of the guide plate (6); the end parts of the fixed grid bars (501) are respectively provided with a rotating block (506), a parallelogram mechanism is formed between the rotating blocks (506), one rotating block (506) is hinged with a long-arm push rod (505), and the other end of the long-arm push rod (505) is hinged with a short-arm push rod (601).
4. The mobile recycled asphalt mixture cold stirring device for road construction according to claim 1, which is characterized in that: and a crushing roller (203) is arranged on the lower side inside the screening device (2).
5. The mobile recycled asphalt mixture cold mixing device for road construction according to any one of claims 1 to 4, wherein: the heating part (302) comprises an L-shaped lifting blade (3021) arranged on the inner wall of the shell (301); a condenser is arranged outside the shell (301); an evaporator is arranged outside the stirring device (3), a liquid outlet of the condenser is communicated with a liquid inlet of the evaporator through a pipeline, and an expansion valve is arranged; the liquid inlet of the condenser is communicated with the liquid outlet of the evaporator through a pipeline, and a compressor is arranged; refrigerant is filled in the pipeline.
6. The mobile recycled asphalt mixture cold stirring device for road construction according to claim 5, wherein the mobile recycled asphalt mixture cold stirring device comprises: a circle of material passing holes (3011) are formed in the surface of the middle of the shell (301), and abrasive material blocks (3012) are arranged in the material passing holes (3011); the regeneration ring (303) is arranged on the outer side of the middle part of the shell (301) and seals the material passing hole (3011), and a feeding hole is formed in the upper part of the regeneration ring (303).
7. The mobile recycled asphalt mixture cold stirring equipment for road construction according to claim 6, which is characterized in that: a transverse barrier strip (305) is arranged at a feed inlet of the regeneration ring (303); the grinding material block (3012) is triangular, the tip structure of the triangle faces the rolling direction of the shell (301), and the outer side face of the grinding material block (3012) is provided with a texture structure.
8. The mobile recycled asphalt mixture cold stirring device for road construction according to claim 1, which is characterized in that: the lower part of one end of the discharge hole of the shell (301) is provided with a platform for bearing the support rollers (7), and the lower end of the platform is connected with a hydraulic rod (8).
9. A mobile regenerated asphalt mixture cold stirring method for highway construction comprises the following steps:
s1, screening aggregate: rotating a parallelogram mechanism at the end part of the fixed grid strip (501), rotating a balance weight strip (503) on the fixed grid strip (501) to a horizontal position, coaxially aligning a ring sleeve (504) with a corresponding through hole (202) on the screening device (2), then inserting the movable grid strip (502) into the corresponding through hole (202) and the ring sleeve (504), so that the movable grid strip (502) and the fixed grid strip (501) jointly form a more dense screen (5) structure, and screening aggregate;
s2, crushing and conveying the aggregate: the aggregates passing through the screen (5) are further crushed by a crushing roller (203) to form aggregate particles; the aggregate particles are conveyed to a second conveying belt (402) by a guide plate (6) and then conveyed to a feeding port of the stirring device (3) by the second conveying belt (402);
s3, heating and drying aggregate: starting a compressor, enabling a refrigerant to circularly flow in a pipeline according to the operation principle of an air conditioner, enabling a condenser to release heat around a heating part (302), heating and drying aggregate particles in a shell (301), and stirring and lifting the aggregate particles by an L-shaped lifting plate (3021) along with the rotation of the shell (301) so as to fully heat and dry the aggregate; the L-shaped material raising plate (3021) is obliquely arranged so as to push the aggregate forwards by utilizing the oblique posture of the L-shaped material raising plate;
s4, material waiting: lifting the discharge hole of the shell (301) by using a hydraulic cylinder, enabling the aggregate to continuously flow in the heating part (302) without being pushed forward, and waiting for the reclaimed materials to enter from the feeding hole of the reclaiming ring (303);
s5, screening the reclaimed materials: the movable grid bars (502) are drawn out from the through holes (202), the fixed grid bars (501) are left to form a large-gap screen mesh (5), and then the regenerated material is screened by the large-gap screen mesh (5), so that the construction characteristics of generally large regenerated material particles are adapted;
s6, crushing and conveying reclaimed materials: the evaporator absorbs heat around the screening device (2), so that the temperature of the screening device (2) and the reclaimed materials in the screening device is reduced, the viscosity of asphalt is reduced, and the cold crushing effect is improved; after the movable grid strips (502) are pulled out, the balance weight strips (503) naturally droop, the parallelogram mechanism resets, the long arm push rod (505) is utilized to drive the short arm push rod (601) to rotate, the guide plate (6) is guided to the other side, the crushed regenerated material is guided to the first conveying belt (401) through the guide plate (6), lifted to the material inlet of the regeneration ring (303) through the first conveying belt (401), and enters the regeneration ring (303);
s7, secondary crushing of the reclaimed materials: after the reclaimed materials enter the regeneration ring (303), the uncrushed long-strip reclaimed materials vertically and downwards enter the shell (301) along the length direction under the dredging action of the barrier strips (305), and the accumulated reclaimed materials are broken and pushed into the shell (301) by the abrasive material block (3012) and are further crushed;
s8, mixing and stirring: with the pneumatic cylinder pressure release, casing (301) resets, and aggregate and reclaimed material begin to mix at the middle part, and hot aggregate produces the heat radiation to the reclaimed material, with the reclaimed material heating, resumes viscous structure to evenly glue on the aggregate surface with remaining pitch, form the aggregate heap that all adheres to pitch spare.
10. The mobile recycled asphalt mixture cold stirring method for road construction according to claim 9, which is characterized in that: a pipeline for supplying steam to the heating part (302) is communicated with the shell (301); a vibrating motor is arranged outside the screening device (2); after the aggregate enters the stirring part (304), the aggregate is further lifted and stirred by the groove body (3041) protruding towards the inside of the shell (301), powder arranged in the groove body (3041) permeates to the inner surface of the groove body (3041) through the powder hole (3042) on the groove body (3041), and the aggregate adhered with asphalt is prevented from being adhered to the groove body (3041).
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| CN113789699B (en) * | 2021-08-23 | 2024-01-09 | 丽江林润混凝土有限公司 | High-performance regenerated asphalt concrete processing complete equipment |
| CN116408888B (en) * | 2023-04-24 | 2023-09-12 | 宁波中海建材有限公司 | Intelligent concrete production equipment |
| CN117427547B (en) * | 2023-12-13 | 2024-03-15 | 山西交通养护集团有限公司 | Compound rock asphalt activation agitator tank |
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| CN204151646U (en) * | 2014-10-23 | 2015-02-11 | 甘肃省交通科学研究院有限公司 | Be applicable to the compound mixing device of cold district maintenance of surface |
| KR101587111B1 (en) * | 2015-05-04 | 2016-01-20 | 한국건설기술연구원 | Asphalt paving apparatus for recycling asphalt surface layer in field, and method for the same |
| CN105442414A (en) * | 2015-12-16 | 2016-03-30 | 郝志付 | Hot reclaiming equipment for asphalt mixture |
| CN205804104U (en) * | 2016-07-14 | 2016-12-14 | 福建铁拓机械有限公司 | It is applied to the primary cold burden sieve of regeneration asphalt mixing plant |
| CN207567607U (en) * | 2017-11-16 | 2018-07-03 | 鞍山森远路桥股份有限公司 | Mobile Plant cold regenerative machine |
| CN109137677A (en) * | 2018-09-19 | 2019-01-04 | 福建铁拓机械有限公司 | A kind of continuous action of forced stirring formula of asphalt generating apparatus and production method again entirely |
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