A kind of bituminous mixture automation detection and control system
Technical field
The present invention relates to bituminous concrete mixture mixing equipment technical field, be specifically related to the system that a kind of bituminous concrete mixture mixes and stirs bitumen aggregate ratio and mineral aggregate grating online automatic detection technology and the automatic detection of regeneration asphalt mixing and mixture quality control in process.
Background technology
Highway in China is built particularly high-grade highway construction and is developed very fast, and asphalt concrete pavement is applied widely in highway construction, hot-mix asphalt mixture is the ground surface material being widely used in each standard highway, its mixing quality directly affects quality and the programming of asphaltic road-mix surface course, be one of most important operation in whole asphalt concrete pavement construction operation, the quality of asphalt concrete pavement is directly related with the match ratio of bituminous mixture.
Europe, the United States, Deng developed country at present the production technology of reclaimed asphalt mixture and various excavations supporting with it, milling, fragmentation, the facility such as to mix and stir manufacture and exploit in all achieve significant achievement, through the large-scale production practice of nearly 30 years, demonstrate asphalt-regenerating utilization feasibility technically, and define the complete asphalt-regenerating technology of system, and reach standardization and standardized maturity.
Development along with China's asphalt pavement regeneration application technology improves the appearance with standard criterion; the Applied of Asphalt Pavement Recycle Technique meeting Mode of Circular is more widely used in highway construction afterwards, maintenance project; the introduction of the research of regeneration asphalt technology, popularization and its relative special-purpose equipment and exploitation, to reducining the construction costs, making rational use of resources, preserve the ecological environment and promote that highway construction has earth shaking meaning.
Traditional bitumen content and mineral aggregate grating are obtained by extraction test method or combustion method, or the outward appearance of, fines thick by AIMS system evaluation and material.The bitumen content inspection of bituminous mixture is obtained by extraction test method or combustion method in laboratory, and test period is more than 30 minutes, and general every morning and afternoon do battery of tests respectively and control, and can not immediately analyze the quality of bituminous mixture.AIMS system evaluates outward appearance and the material of thick, fines by analyzing the image (black, white, ash three kinds of forms) captured by camera, black, white image is used for analyzing its shape and water caltrop, and neutral image is for analyzing its material.
Because mineral material size is irregular, different, the thickness of pitch parcel is irregular, and AIMS system can not carry out three-dimensional statistics to all mineral material particles, and accuracy of quantitative analysis is not high.Because the variability of the bitumen content of old material, mineral aggregate grating is comparatively large, the quality stability of reclaimed asphalt mixture is a technical bottleneck of restriction large-scale application always.
Will be there is following problem in traditional bituminous mixture owner: the mode of the asphalt mixture machine injection pitch of (1) different model, specification, manufacturer is different, control bitumen content precision also just different, affect the stability of quality of asphalt mixtures.(2) asphalt mixture machine adopts batch (-type) asphalt mixture machine or continuous asphalt mixing machine, and due to mixing machine machinery, electronic weighting departure, therefore mineral aggregate, asphalt content produce error.(3) the cold burden bin discharge port external size of opening and feeding belt running speed unstability, can not reach uniform feeding and accurately.(4) proportioning that mineral aggregate water content causes makes a variation, and the quality of bituminous mixture is unstable.(5) domestic and international batch (-type) asphalt mixture machine or continuous asphalt mixing machine goods producer, do not have the bitumen aggregate ratio of design and installation bituminous mixture and the online automatic detection control appliance of mineral aggregate grating.(6) domestic and international asphalt concrete batching & mixing plant, in asphalt mixture mixing process, does not have every biscuit to detect the bitumen aggregate ratio of bituminous mixture and mineral aggregate grating.
Will be there is following problem in existing reclaimed asphalt mixture owner: the variability problem of (1) waste material.The variability of the bitumen content of waste material, ageing of asphalt degree and aggregate grading is general all comparatively large, directly affects the quality control of reclaimed asphalt mixture.(2) batch (-type) asphalt mixture machine is hot in-plant reclaimed, because the reasons such as equipment complexity is huge, technology controlling and process is difficult, cost is high, reproduction quality fluctuates with old material, old material adding proportion is few do not obtain practical application at home.(3) continuous asphalt mixing machine is hot in-plant reclaimed, because equipment is relatively simple, output is large, cost is low, is most widely used, but owing to not having real-time old material Quality Monitoring Control System, reclaimed asphalt mixture quality is unstable.
Mainly there is following problem in existing bituminous concrete mixing detection system: (1) is due to the reason of equipment and technology condition, engineering quality control system and technological process, every platform mixing machine every day 1 ~ 2 time, with the evaluation of the average of 2 samples, quality evaluation can not be carried out to the compound often coiled.(2) bituminous concrete mixing on-line automatic monitoring system is not had.
Mainly there is following problem in existing reclaimed asphalt mixture control system: (1) is due to the reason of equipment and technology condition and technological process, can only be that production mix proportion carries out feed according to test, to the compound bitumen aggregate ratio of supply and the change of mineral aggregate grating, real-time supply can not be carried out.(2) reclaimed asphalt mixture feed control system is not had.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of bituminous mixture automation detection and control system, by designing a set of bituminous mixture automation detection and control equipment and cooperating data analysis module and batching control module with it, mixing and stirring in process in the asphalt mixture mixing process of batch (-type) asphalt mixture machine or continuous asphalt mixing machine and at reclaimed asphalt mixture achieves in real time, automatically, the bitumen aggregate ratio of online automatic detection bituminous mixture and mineral aggregate grating exactly, each virgin material is given according to the bitumen aggregate ratio of the old material of reclaimed asphalt mixture and mineral aggregate gradation differentials automatic makeup, thus guarantee that product reaches production mix proportion, improve quality of asphalt mixtures, simultaneously this system also have that equipment is easy for installation, simple to operate, intuitive display, to the professional experiences of user and the advantage such as skill set requirements is relatively low, precision is high, full-automatic, the time is short.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: provide a kind of bituminous mixture automation detection and control system, it is characterized in that: be grouped into by mechanical part and electric control part; Described mechanical part comprises material fetching mechanism, oilstone separating mechanism and screening weighing mechanism; Described electric control part divides the data analysis module and batching control module that comprise and interconnecting; Described material fetching mechanism is arranged on the detection feed bin of mixing machine for asphalt mixture or the storage bin discharge outlet of reclaimed asphalt mixture mixing machine, the discharge end of material fetching mechanism is connected with the feed end of oilstone separating mechanism, and screening weighing mechanism is arranged on the discharge end of oilstone separating mechanism; Described data analysis module respectively with material fetching mechanism with sieve weighing mechanism and be connected, batching control module respectively with material fetching mechanism, oilstone separating mechanism, sieve weighing mechanism and be connected with the feeding system of mixing machine for asphalt mixture.
Preferably, described material fetching mechanism comprises feeding bucket, feeding leads chute, electronic scale, scale hooper, lead chute and pneumatic linear actuator; Described feeding is led chute top and is connected with feeding bucket, and feeding is led chute bottom and is connected with electronic scale; The described scale hooper that is located at is located at electronic scale and is connected; Be provided with weighing below described scale hooper and lead chute; Described pneumatic linear actuator is arranged on feeding bucket and gets hopper valve junction.
Preferably, described oilstone separating mechanism comprises combustion furnace, tray for combustion and transmission mechanism; Described tray for combustion does back and forth movement along transmission mechanism between combustion furnace and material fetching mechanism.
Preferably, described combustion furnace comprises smoke vent, body of heater, air inlet duct, fire door, resistance wire and Elema; Described smoke vent is located at upper of furnace body, and air inlet duct is located at lower portion of furnace body; Be provided with a burner hearth in described body of heater, side is provided with fire door to body of heater; The bottom of described burner hearth is provided with Elema, and the left and right sidewall of burner hearth and breech wall are provided with resistance wire.
Preferably, described tray for combustion comprises burning disk body, detent mechanism, partial gear, driven gear, upper strata combustion chamber soleplate, connecting rod and lower floor's combustion chamber soleplate; Described burning disk body top and feeding are led chute and are connected; Described upper strata combustion chamber soleplate and lower floor's combustion chamber soleplate form by the movable floor of two work that cooperatively interact, and each movable floor one end is connected with burning disk body by rotating hinge, the unsettled setting of the other end; Be connected by connecting rod between the homonymy movable floor of described upper strata combustion chamber soleplate and lower floor's combustion chamber soleplate; Described driven gear is connected with lower floor combustion chamber soleplate, discharging motor, driving gear, reduction gearing are connected with oilstone separating mechanism frame with partial gear, driving gear is connected with discharging motor shaft, reduction gearing and partial gear are coaxial one, and reduction gearing is meshed with the driving gear on the power output shaft being connected to discharging motor; Partial gear is meshed with driven gear; Described lower floor combustion chamber soleplate is provided with detent mechanism with the burning disk body place of being hinged.
Preferably, described screening weighing mechanism comprises screening cabinet, screening plant, vibrating spring, base, vibrating motor, receiver and electronic scale; Described screening cabinet is connected on base by vibrating spring, and vibrating motor is fixedly located on base, and the power output shaft of vibrating motor is connected with screening cabinet; Be provided with at least three screening plants from top to bottom in described screening cabinet, be provided with immediately below screening plant and be fixed on receiver directly over electronic scale.
Preferably, described screening weighing mechanism is located at below transmission mechanism; Described screening weighing mechanism comprises screening cabinet, screening plant, vibrating spring, base, vibrating motor, receiver and electronic scale; Described screening cabinet is connected on base by vibrating spring, and vibrating motor is fixedly located on base, and the power output shaft of vibrating motor is connected with screening cabinet; Be provided with at least three screening plants from top to bottom in described screening cabinet, be provided with immediately below screening plant and be fixed on receiver directly over electronic scale.
Preferably, described screening plant comprises detent mechanism, discharging motor, sieve casing, driven gear, partial gear, screen cloth, driving gear, reduction gearing; Be provided with screen cloth in described sieve casing, screen cloth is made up of the movable screen cloth of two work that cooperatively interact, and each movable screen cloth one end is connected with sieve casing by rotating hinge, the unsettled setting of the other end; Described driven gear is fixedly connected with screen cloth, discharging motor, driving gear, reduction gearing are connected with sieve casing with partial gear, driving gear is connected with discharging motor shaft, reduction gearing and partial gear are coaxial one, and described reduction gearing is meshed with the driving gear on the power output shaft being connected to discharging motor; Described screen cloth and the sieve casing place of being hinged are provided with detent mechanism.
Preferably, described data analysis module is connected with the communication port of electronic scale respectively, data analysis module fieldbus and batching control model calling.
Preferably, described batching control module is connected with all motor wire, signal transmssion line, analysis module fieldbus and mixing machine for asphalt mixture Weighing system respectively.
As shown from the above technical solution, bituminous mixture automation detection and control system provided by the present invention has following beneficial effect compared to existing asphalt mixture machine: 1, highly versatile: can be used for batch (-type) asphalt mixture machine or continuous asphalt mixing machine or regeneration asphalt mixing machine; 2, on-line monitoring can be realized: this system automatically can gather bituminous mixture on a production line and carry out detecting in real time, automatically, quickly and accurately; 3, automaticity is high: can carry out virgin material supply control to pitch and each grating mineral aggregate rapidly according to the real-time testing result of reclaimed asphalt mixture, thus guarantee that product reaches production mix proportion, improve quality of asphalt mixtures; 4, this bituminous mixture automation detection and control system also has easy for installation, simple to operate, intuitive display, precision advantages of higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of bituminous mixture automation detection and control system.
Fig. 2 is the structural representation of material fetching mechanism.
Fig. 3 is the structural representation of tray for combustion.
Fig. 4 is the structural representation of combustion furnace.
Fig. 5 is the structural representation of screening weighing mechanism.
Fig. 6 is the structural representation in screening weighing mechanism in sieve casing.
Fig. 7 is bituminous mixture automation detection and control system principle diagram.
Wherein, 1, combustion furnace; 11, smoke vent; 12, body of heater; 13, air inlet duct; 14, fire door; 15, resistance wire; 16, Elema; 2, material fetching mechanism; 21, feeding bucket; 22, feeding leads chute; 23, electronic scale; 24, scale hooper; 25, chute is led in weighing; 26, pneumatic linear actuator; 3, tray for combustion; 31, burn disk body; 32, detent mechanism; 33, partial gear; 34, driven gear; 35, upper strata combustion chamber soleplate; 36, connecting rod; 37, lower floor's combustion chamber soleplate; 4, transmission mechanism; 5, batching control module; 6, data analysis module; 7, weighing mechanism is sieved; 71, cabinet is sieved; 72, screening plant; 721, sieve casing; 722, driven gear; 723, partial gear; 724, screen cloth; 725, detent mechanism; 726, driving gear; 727, reduction gearing; 73, vibrating spring; 74, base; 75, drive motors; 76, receiver; 77, electronic scale.
detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
As shown in Figure 1, material fetching mechanism 2 is connected with the detection feed bin of mixing machine for asphalt mixture or the storage bin of reclaimed asphalt mixture mixing machine, the weighing of material fetching mechanism 2 is led chute 25 and is docked with tray for combustion 3, tray for combustion 3 is connected with transmission mechanism 4, transmission mechanism 4 is connected with combustion furnace 1, and tray for combustion 3 docks with screening weighing mechanism 7.Electronic scale 77 in screening weighing mechanism 7 is connected with data analysis module 6 respectively by RS485 communication port with the electronic scale 23 in material fetching mechanism 2, data analysis module 6 is connected with batching control module 5 by fieldbus, and batching control module 5 is connected with controlled parts such as discharging motor, drive motors, pneumatic linear actuators respectively.
The course of work of this bituminous mixture automation detection and control system is: start up system is started working, and is gathered the detection sample of bituminous mixture, and weigh compound gross mass by electronic scale 23 by material fetching mechanism 2; Pour the sample of collection into tray for combustion 3, tray for combustion 3 is sent into combustion furnace 7 by transmission mechanism 4 and is burnt, and pitch is completely burned, and tray for combustion 3 is returned from combustion furnace 1 by transmission mechanism 4; Mineral aggregate in tray for combustion 3 is poured into screening weighing mechanism 7, screening mineral aggregate, by each grating mineral aggregate after screening by electronic scale 77 accurate weighing; Received by data analysis module 6 and the bituminous mixture gross mass of storage of collected be separated after the quality of each grating mineral aggregate, calculate the pitch of detection and the mass ratio of each grating mineral aggregate, pour qualified asphalt compound into finished bin by batching control module 5, pour defective bituminous mixture into reject bin; Meanwhile, analyze and detect the pitch that obtains of reclaimed asphalt mixture and each mass ratio of grating mineral aggregate and the correction value of coordination in works, by batching control module 5 automatic makeup to the virgin material of pitch or each grating mineral aggregate.
As shown in Figure 2, feeding bucket 21 is connected with the detection feed bin of mixing machine for asphalt mixture or the storage bin of reclaimed asphalt mixture mixing machine, pneumatic linear actuator 26 is connected with feeding bucket 21, feeding is led chute 22 and is connected with feeding bucket 21, electronic scale 23 and weighing are led chute 25 and are connected, scale hooper 24 is connected with electronic scale 23, weigh lead chute 25 with weigh sluice gate dock.
The course of work of material fetching mechanism 2 is: start up system is started working, from the detection feed bin of mixing machine for asphalt mixture or the storage bin feeding of reclaimed asphalt mixture mixing machine, feeding bucket 21 valve is opened by pneumatic linear actuator 26, open 5s, thick weighing about 1000g (by testing the time obtained), lead chute 22 by feeding and pour scale hooper 24 into, close feeding bucket 21 valve, electronic scale 23 accurate weighing, open weighing sluice gate, lead chute 25 by weighing and pour tray for combustion 3 into, close and weigh sluice gate.
As shown in Figure 3, disk body 31 top and the feeding of burning is led chute 22 and is connected; Upper strata combustion chamber soleplate 35 and lower floor's combustion chamber soleplate 37 form by the movable floor of two work that cooperatively interact, and each movable floor one end is connected with burning disk body 31 by rotating hinge, the unsettled setting of the other end; Be connected by connecting rod 36 between the homonymy movable floor of upper strata combustion chamber soleplate 35 and lower floor's combustion chamber soleplate 37, driven gear 34 is connected with lower floor combustion chamber soleplate 37, discharging motor, driving gear, reduction gearing are connected with oilstone separating mechanism frame with partial gear 33, driving gear is connected with discharging motor shaft, reduction gearing and partial gear 33 are coaxial one, and reduction gearing is meshed with the driving gear on the power output shaft being connected to discharging motor; Partial gear 33 is meshed with driven gear 34, and lower floor's combustion chamber soleplate 37 is provided with detent mechanism 32 with burning disk body 31 place of being hinged.
The course of work of tray for combustion 3 is: the tray for combustion 3 that the bituminous mixture detection sample collected is housed is sent to combustion furnace 1 burner hearth by transmission mechanism 4, after burning terminates, tray for combustion 3 is sent into the top of screening weighing mechanism 7 by transmission mechanism 4, partial gear 33 and driven gear about 34 align, discharging machine operation, partial gear 33 drives driven gear 34 to rotate, make upper strata combustion chamber soleplate 35 and lower floor's combustion chamber soleplate 37 rotate 100 ° by connecting rod 36 simultaneously, mineral aggregate after burning is fallen into screening weighing mechanism 7, time 8s, afterwards, discharging motor reversal also drives driven gear 34 to rotate closedown upper strata combustion chamber soleplate 35 and lower floor's combustion chamber soleplate 37 by partial gear 33, detent mechanism 32 locks rotating hinge under spring force.
As shown in Figure 4, fire door 24 is connected with body of heater 12, and furnace roof is provided with smoke vent 11, and body of heater side is provided with into oxygen blower fan and air inlet duct 13, and burner hearth bottom is provided with Elema 16, and after burner hearth and two sides are set to resistance wire 15.
In oilstone separation process, the Elema 16 of combustion furnace 1 is heated to design temperature 538 DEG C, fire door 14 is opened, the tray for combustion 3 that the bituminous mixture detection sample collected is housed is sent in burner hearth by transmission mechanism 4, limit switch prompting transmission puts in place, transmission mechanism 4 stops, close fire door 14, resistance wire 15 Fast Heating preheating enter the air of burner hearth, burning 150s (by testing the time obtained), open fire door 14, tray for combustion 3 is sent into the top of screening weighing mechanism 7 by transmission mechanism 4, close fire door 14, limit switch prompting transmission puts in place.
As shown in Figure 5 and Figure 6, screening cabinet 71 is connected on base 74 by vibrating spring 73, and vibrating motor 75 is fixedly located on base 74, and the power output shaft of vibrating motor 75 is connected with screening cabinet 71; Be provided with at least three screening plants 72 from top to bottom in described screening cabinet 71, be provided with immediately below screening plant 72 and be fixed on receiver 76 directly over electronic scale 77; Screen cloth 724 is made up of the movable screen cloth of two work that cooperatively interact, and each movable screen cloth one end is connected with sieve casing 721 by rotating hinge, the unsettled setting of the other end; Described driven gear 722 is fixedly connected with screen cloth 724, discharging motor, driving gear 726, reduction gearing 727 are connected with sieve casing 721 with partial gear 723, driving gear 726 is connected with discharging motor shaft, reduction gearing 727 and partial gear 723 are coaxial one, and described reduction gearing 727 is meshed with the driving gear 726 on the power output shaft being connected to discharging motor; Described screen cloth 724 is provided with detent mechanism 725 with sieve casing 721 place of being hinged.
The course of work of screening weighing mechanism is: when the mineral aggregate of tray for combustion 3 is poured in sieve casing 721, Vibration on Start-up motor 75 promotes the displacement that screening cabinet 71 produces 10mm simultaneously, under the effect of vibrating spring 73, promote screening cabinet 71 produce vibration, different-grain diameter mineral aggregate is sieved into carse, medium and small three kinds by the screen cloth 724 of 3 screening plants from top to bottom successively, and (size of sieve screen apertures makes as requested, changeable adds the number of plies of screening as required, maximum 5 layers), receiver 76 accepts mineral aggregate dust, sieving time 5s, after screening, discharging driven by motor driving gear 726 rotates, driving gear 726 drives reduction gearing 727, partial gear 723 rotates, partial gear 723 drives driven gear 722 to rotate 90 °, mineral aggregate after burning is fallen into screening weighing mechanism by screen cloth 724 respectively to carry out weighing and confirming, according to order from top to bottom during weighing, mineral aggregate is poured into receiver 76 and is weighed and confirm by the screen cloth 724 first opening most next stage screening plant, mineral aggregate is poured into receiver 76 and is weighed and confirm by the screen cloth 724 opening middle one-level screening plant again, mineral aggregate is poured into receiver 76 and is weighed and confirm by the screen cloth 724 opening most upper level screening plant again, afterwards, close the screen cloth 724 of 3 screening plants, detent mechanism 725 locks rotating hinge under spring force.
As shown in Figure 7, the data input pin of data analysis module 6 is connected with the electronic scale 77 sieved in weighing mechanism 7 with the electronic scale 23 in material fetching mechanism 2 respectively by data wire, the data output end of data analysis module 6 is connected with the data input pin of batching control module 5, and the control signal output of batching control module 5 is respectively with material fetching mechanism 2, transmission mechanism 4, oilstone separating mechanism with sieve weighing mechanism 7 and be connected.Data analysis module 6 comprises CPU, memory and input/output interface.
When this system uses, plain asphalt compound a mixing bowl is connected with detection feed bin, finished bin and waste product storehouse, detect feed bin to be connected with material fetching mechanism 2, data analysis module 6 is connected with plain asphalt compound a mixing bowl and batching control module 5, and batching control module 5 prints with preservation and Weighing system is connected; Reclaimed asphalt mixture storage bin is connected with material fetching mechanism 2, and data analysis module 6 is connected with plain asphalt compound a mixing bowl and batching control module 5, and batching control module 5 prints with preservation and Weighing system is connected.
Plain asphalt compound mix is at detection feed bin acquisition testing sample, according to above-mentioned testing process, this system detects collecting sample, according to testing result, carry out data analysis, transfer to bituminous mixture a mixing bowl by fieldbus, qualified asphalt compound pour finished bin into, defective bituminous mixture pour reject bin into; Reclaimed asphalt mixture mix is at storage bin acquisition testing sample, according to above-mentioned testing process, this system detects collecting sample, according to testing result, carry out data analysis, transfer to batching control module by fieldbus, batching control module controls plain asphalt compound Weighing system automatic makeup to the virgin material of pitch or each grating mineral aggregate, and form of surviving is preserved and printed.
In sum, the present invention is by a set of bituminous mixture automation detection and control equipment of design and cooperating data analysis module and batching control module with it, mixing and stirring in process in the asphalt mixture mixing process of batch (-type) asphalt mixture machine or continuous asphalt mixing machine and at reclaimed asphalt mixture achieves in real time, automatically, the bitumen aggregate ratio of online automatic detection bituminous mixture and mineral aggregate grating exactly, each virgin material is given according to the bitumen aggregate ratio of the old material of reclaimed asphalt mixture and mineral aggregate gradation differentials automatic makeup, thus guarantee that product reaches production mix proportion, improve quality of asphalt mixtures, simultaneously this system also have that equipment is easy for installation, simple to operate, intuitive display, to the professional experiences of user and the advantage such as skill set requirements is relatively low, precision is high, full-automatic, the time is short.
Although be described in detail the specific embodiment of the present invention by reference to the accompanying drawings, it should be pointed out that the various amendment that those skilled in the art do not need creative work to make or distortion are still by the protection of this patent.