CN114960346A - Pitch melts device for town road engineering - Google Patents
Pitch melts device for town road engineering Download PDFInfo
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- CN114960346A CN114960346A CN202210628897.7A CN202210628897A CN114960346A CN 114960346 A CN114960346 A CN 114960346A CN 202210628897 A CN202210628897 A CN 202210628897A CN 114960346 A CN114960346 A CN 114960346A
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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
- E01C19/05—Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
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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
- E01C19/08—Apparatus for transporting and heating or melting asphalt, bitumen, tar, or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention is suitable for the technical field of municipal road engineering equipment, and provides an asphalt melting device for municipal road engineering, which comprises a box body and a crushing unit arranged in the box body, wherein the crushing unit is used for crushing asphalt to be melted and comprises a crushing roller, a power part, a crushing part, an adjusting mechanism and a plate body; be equipped with heating unit, in fly leaf, third connecting rod and the second connecting rod motion process for pitch is better to be heated, has further improved and has melted efficiency.
Description
Technical Field
The invention belongs to the technical field of municipal road engineering equipment, and particularly relates to an asphalt melting device for municipal road engineering.
Background
The municipal infrastructure refers to various buildings, structures, equipment and the like which are arranged in the planning and construction range of urban areas and towns (villages) and provide paid or unpaid public products and services for residents based on government responsibilities and obligations. Various public infrastructure construction matched with urban life belongs to the municipal engineering category;
in the municipal road engineering, asphalt is a commonly used material, the asphalt needs to be paved on a road after being melted, and the asphalt needs to be crushed before being melted, so that the asphalt is favorably melted by heating;
chinese patent CN215629153U discloses an asphalt melting recovery device, which comprises an installation bottom plate, an installation frame, an installation seat, a mixing mechanism and a crushing mechanism, wherein the middle position of the installation bottom plate is bent downwards, the mixing mechanism is fixedly connected to the surface of the bending position of the installation bottom plate, the installation frame is fixedly connected to the upper surface of the edge position of the installation bottom plate, the installation seat is fixedly connected to the upper end of the installation frame, the crushing mechanism is connected to the installation seat, the crushing mechanism comprises a crushing box body, crushing rollers, a transmission gear, a crushing motor and a protective cover, the upper end of the crushing box body is open, the lower end of the crushing box body is fixedly connected to the upper end of the installation seat, two crushing rollers are rotatably connected to the inside of the crushing box body, and the end parts of the crushing rollers penetrate out of the outer surface of the crushing box body;
chinese patent CN216141491U discloses an asphalt melting and stirring device, which comprises a machine body, wherein the machine body is fixedly arranged on a base, the top end of the machine body is provided with a feed hopper, a crushing roller is fixedly arranged in the feed hopper, the outer side wall of the machine body is fixedly provided with a motor support, a motor is fixedly arranged on the motor support, the output end of the motor is connected with a rotating shaft, a stirring impeller is arranged on the rotating shaft, the bottom of the base is fixedly provided with a roller device, the roller device comprises a shell, the shell is internally provided with a sliding groove, a fixed pressing block is arranged in the sliding groove, a positioning shaft is arranged in the fixed pressing block, the rotating shaft is arranged in the positioning shaft, a roller is arranged in the center of the rotating shaft, a spring is arranged above the fixed pressing block and in the sliding groove, a heating module is fixedly arranged on the inner wall of the machine body, and a temperature sensor is fixedly arranged in the machine body;
chinese patent CN112523034A discloses an asphalt melting device for highway engineering, which comprises a tank body, a crushing tank and a stirring tank, wherein the tank body is of a cuboid structure, the top of the tank body is provided with a feed hopper, an exhaust pipe is arranged beside the feed hopper, a ventilation tank is arranged inside the exhaust pipe, a filter plate is arranged inside the ventilation tank, the feed tank is arranged inside the feed hopper, the feed tank is communicated with the crushing tank arranged inside the tank body, two support plates are symmetrically arranged on the inner wall of the crushing tank, a plurality of crushing rods are arranged on one opposite side end faces of the support plates at equal intervals, the crushing tank is communicated with the stirring tank arranged at the bottom of the tank body, a U-shaped blocking frame is arranged at the communication part of the stirring tank and the crushing tank, and a through groove is arranged in the middle part of the blocking frame;
in the above-mentioned patent, adopt two or many simple crushing rollers to carry out the breakage to pitch mostly, however, if pitch than great piece or when the volume is big, the crushing roller directly breaks into little fragment with big block pitch, and the reaction force that the crushing roller received is great, causes the damage of the overload of equipment or broken unit easily, influences life.
Disclosure of Invention
The invention provides an asphalt melting device for municipal road engineering, and aims to solve the problems.
The invention is realized in this way, a municipal road engineering uses the pitch to melt the device, including the box and locating the crushing unit in the box, the said crushing unit is used for crushing and waiting to melt the pitch, the said crushing unit includes:
the crushing device comprises a box body, two crushing rollers, a feed opening and a screen, wherein the two crushing rollers are arranged in a crushing cavity of the box body in a rotating mode and are spaced side by side;
the power component is used for driving the two crushing rollers to rotate;
the crushing roller comprises a plurality of groups of crushing pieces which are arranged on the side wall of the crushing roller at intervals along the length direction of the crushing roller, each group of crushing pieces comprises a plurality of crushing column teeth which are annularly arranged at intervals, and the crushing column teeth movably penetrate through the side wall of the crushing roller and extend into the crushing roller;
the adjusting mechanism is used for adjusting the length of the crushing column teeth extending out of the crushing roller;
the polylith plate body on the lateral wall of crushing roller is installed to the hoop interval, and the plate body can laminate with the lateral wall in broken chamber for transport the pitch of broken chamber bottom to broken chamber top.
Preferably, the power unit includes:
the first motor is fixed on the side wall of the box body and is used for driving any one crushing roller to rotate;
the straight gear fixed on the mounting shaft of each crushing roller is meshed with the straight gears on the two crushing rollers.
Preferably, the adjustment mechanism comprises:
each crushing roller is concentrically and rotatably provided with an adjusting shaft, a plurality of connecting discs are fixedly arranged on the adjusting shaft along the length direction of the adjusting shaft, and the number of the connecting discs is equal to that of the crushing pieces and corresponds to that of the crushing pieces one by one;
the first connecting rods are eccentrically hinged to the connecting discs, the number of the first connecting rods on each connecting disc is equal to that of the crushing column teeth of each group of crushing pieces and corresponds to that of the crushing column teeth one by one, and one end of each first connecting rod is hinged to the end part, located in the crushing roller, of the corresponding crushing column tooth;
the driving part is used for driving the adjusting shaft to rotate.
Preferably, the driving part includes:
the single-stage flywheel is fixedly arranged at one end of the adjusting shaft extending to the outside of the box body;
the double-sided rack is slidably arranged on the side wall of the box body and positioned between the two single-stage flywheels, and the double-sided rack is meshed with the two single-stage flywheels;
the fourth motor is fixed on the side wall of the box body, an output shaft of the fourth motor is fixedly provided with an adjusting screw rod, and the adjusting screw rod penetrates through the double-sided rack along the length direction of the double-sided rack and is in threaded connection with the double-sided rack;
the fourth motor and the first motor are both electrically connected with the controller, the fourth motor is controlled to be started intermittently by the controller, and the fourth motor and the first motor are controlled to be in opposite working states by the controller.
Preferably, still include heating unit for the heating melts the pitch after the breakage, heating unit locates the heating intracavity of box, feed opening and heating chamber intercommunication, heating unit includes:
the stirring shaft is horizontally and rotatably arranged in the box body, one end of the stirring shaft is connected with a second motor for driving the stirring shaft to rotate, and the second motor is fixed on the outer side wall of the box body;
the stirring shafts and the stirring rods are internally provided with heating wires, and a temperature sensor is arranged in the heating cavity;
and the temperature component is connected with the electric heating wire and the temperature sensor and is used for regulating and controlling the temperature in the heating cavity.
Preferably, the threaded rod is installed in the rotation on the shaft part that the (mixing) shaft is close to box one side inner wall, the threaded rod sets up with the (mixing) shaft is perpendicular, and the one end that the (mixing) shaft was kept away from to the threaded rod is fixed with bevel gear, be fixed with on the box inside wall with bevel gear engaged's awl fluted disc, threaded connection has the fly leaf on the threaded rod, sets up the perforation that supplies the puddler to pass on the fly leaf, it has the second connecting rod to articulate respectively on many puddlers of fly leaf one side are kept away from to the (mixing) shaft, it has the third connecting rod that equals and the one-to-one with second connecting rod quantity to articulate on the fly leaf, and third connecting rod one end is articulated with the second connecting rod.
Preferably, be located the heating chamber below in the box and be fixed with the filter screen, the filter screen is the arc of epirelief, lie in the filter screen both ends on the wall of box both sides and seted up the scum hole, install the valve on the scum hole.
Preferably, be located the filter screen below in the box and be the heat preservation chamber, the heat preservation intracavity is equipped with the heat preservation subassembly, the heat preservation subassembly includes:
the electric heating plate is rotatably arranged in the heat insulation cavity, one end of the electric heating plate is connected with a third motor for driving the electric heating plate to rotate, and a plurality of through holes are uniformly formed in the electric heating plate;
the electric heating plate is electrically connected with the temperature control component through a lead, a temperature sensor is installed in the heat preservation cavity, and the temperature sensor is electrically connected with the temperature control component.
Preferably, the discharge gate department of bottom half is equipped with the unloading subassembly, the unloading subassembly includes:
the telescopic rod is arranged under the discharge port and is vertically arranged;
the output shaft of the fifth motor is fixedly provided with an umbrella-shaped plate which can seal the discharge hole;
the stirring piece is fixed on the umbrella-shaped plate and is positioned in the discharge port.
Preferably, a plurality of elastic pieces are installed on the upper surface of the filter screen at intervals, and the top ends of the elastic pieces extend to the rotating track of the stirring rod and/or the movable plate.
Compared with the prior art, the embodiment of the application mainly has the following beneficial effects:
according to the asphalt melting device for the municipal road engineering, the crushing unit is arranged and comprises the crushing roller, the power part, the crushing piece, the adjusting mechanism and the plate body, so that during working, the crushing effect is better through repeated cyclic crushing, the crushing degree can be adjusted step by step, the overload or damage condition is avoided, the crushing unit is protected, and the service life of the crushing unit is prolonged;
be equipped with the heating unit, the heating unit includes (mixing) shaft, puddler and temperature part, still includes threaded rod, bevel gear, awl fluted disc, fly leaf, second connecting rod and third connecting rod, and in fly leaf, third connecting rod and the second connecting rod motion process, stirring position, angle change have enlarged working range for pitch is better to be heated, has further improved and has melted efficiency.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of an asphalt melting device for municipal road engineering, provided by the invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a left side view of an embodiment 1 of the asphalt melting device for municipal road engineering provided by the invention;
FIG. 4 is a schematic view of a double-sided rack and a single-stage flywheel in an embodiment 1 of the asphalt melting device for municipal road engineering provided by the invention;
FIG. 5 is a schematic structural diagram of an asphalt melting device for municipal road engineering in an embodiment 2;
FIG. 6 is an enlarged view at B in FIG. 5;
FIG. 7 is a schematic view showing the installation of the elastic member of an asphalt melting apparatus for municipal road engineering according to an embodiment 2 of the present invention.
Notations for reference numerals: 1. a box body; 2. a slag discharge port; 3. a filter screen; 4. a stirring rod; 5. a stirring shaft; 6. a temperature component; 7. a magnet; 8. crushing column teeth; 9. a crushing roller; 10. a first link; 11. a feed hopper; 12. a plate body; 13. a connecting disc; 14. an adjustment shaft; 15. a feeding port; 16. a second link; 17. a second motor; 18. a third link; 19. a threaded rod; 20. a conical fluted disc; 21. a bevel gear; 22. a movable plate; 23. a through hole; 24. a third motor; 25. an electric hot plate; 26. a telescopic rod; 27. a fifth motor; 28. an umbrella-shaped plate; 29. adjusting the screw rod; 30. a double-sided rack; 31. a single-stage flywheel; 32. an infrared sensor; 33. a spur gear; 34. a first motor; 35. an elastic member.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Example 1
The embodiment of the invention provides an asphalt melting device for municipal road engineering, which comprises a box body 1 and a crushing unit arranged in the box body 1, wherein in the embodiment, a feed hopper 11 is arranged at the top of the box body 1, a discharge hole is arranged at the bottom of the box body 1, a support frame is further fixed at the bottom of the box body 1, the crushing unit is used for crushing asphalt to be melted, and the crushing unit comprises:
two crushing rollers 9 which are arranged in a crushing cavity of the box body 1 in a rotating mode and are spaced side by side can crush asphalt through the reverse rotating and matching of the two crushing rollers 9, the side wall of the crushing cavity is arc-shaped, the preferred circle center of the arc-shaped crushing roller is located on the axis of the crushing roller 9, a feed opening 15 is formed in the bottom of the crushing cavity, a screen is installed in the feed opening 15, and the screen can be fixedly installed through screws;
the power component is used for driving the two crushing rollers 9 to rotate, and the rotation directions of the two crushing rollers 9 are opposite;
a plurality of groups of crushing pieces are arranged on the side wall of the crushing roller 9 at intervals along the length direction of the crushing roller 9, each group of crushing pieces comprises a plurality of crushing column teeth 8 which are annularly arranged at intervals, the crushing column teeth 8 movably penetrate through the side wall of the crushing roller 9 and extend into the crushing roller 9, and preferably, the crushing column teeth 8 radially move along the crushing roller 9;
the adjusting mechanism is used for adjusting the length of the crushing column teeth 8 extending out of the crushing rollers 9, so that the crushing distance between the two crushing rollers 9 is adjusted, asphalt can be crushed step by step from coarse to fine, and the damage of the crushing rollers 9 caused by the overload jamming of equipment or too large acting force is avoided;
a plurality of plate bodies 12 mounted on the side walls of the crushing roller 9 at circumferential intervals, the plate bodies 12 being capable of fitting against the side walls of the crushing chamber for transporting the asphalt at the bottom of the crushing chamber to the top of the crushing chamber;
in specific implementation, the plate body 12 comprises a sleeve plate and a support plate movably arranged in the sleeve plate, the sleeve plate is fixed on the side wall of the crushing roller 9, a spring is fixedly connected between the support plate and the sleeve plate, the acting force of the spring on the support plate is towards one side of the crushing roller 9, a magnet 7 is arranged on the outer side of the side wall of the crushing cavity, the magnet 7 can be matched with the support plate in a magnetic attraction manner, when the support plate moves to the magnet 7, the support plate moves out of the sleeve plate and is attached to the side wall of the crushing cavity due to the attraction of the magnet 7 on the support plate, and after the support plate is separated from the magnet 7, the support plate retracts into the sleeve plate under the action of the spring;
the during operation, it is broken intracavity all to add by the feeding to wait to melt pitch, thereby it carries out the breakage to wait to melt pitch to drive two crushing rollers 9 through power pack, and simultaneously, pitch after preliminary breakage falls to broken chamber bottom, crushing roller 9 drives plate body 12 and rotates, plate body 12 drives the pitch of broken chamber bottom and moves to broken chamber top along broken chamber lateral wall, then fall and carry out breakage once more between two crushing rollers 9, and, adjust broken column tooth 8 step by step through adjustment mechanism and stretch out the outside length of crushing roller 9, make pitch broken more and more thin step by step, through the manifold cycles breakage, crushing effect is better, the life of crushing unit has been prolonged simultaneously.
Specifically, the power unit includes:
the first motor 34 is fixed on the side wall of the box body 1, and the first motor 34 can be fixed by adopting a bolt and is used for driving any one crushing roller 9 to rotate;
the straight gear 33 fixed on the mounting shaft of each crushing roller 9 is meshed with the straight gears 33 on the two crushing rollers 9, the first motor 34 drives the straight gear 33 on the mounting shaft of one crushing roller 9 to rotate, the straight gear 33 drives the other crushing roller 9 to rotate through the other straight gear 33, the rotation directions of the two crushing rollers 9 are opposite, and of course, the power component can also be of other structures and can drive the two crushing rollers 9 to rotate oppositely, so that excessive limitation is not performed.
In a specific implementation, the adjustment mechanism comprises:
each crushing roller 9 is concentrically and rotatably provided with an adjusting shaft 14, a plurality of connecting discs 13 are fixedly arranged on the adjusting shaft 14 along the length direction of the adjusting shaft, a welding fixing mode can be adopted, and the number of the connecting discs 13 is equal to that of the crushed pieces and corresponds to that of the crushed pieces one by one;
the first connecting rods 10 are eccentrically hinged to the connecting discs 13, the number of the first connecting rods 10 on each connecting disc 13 is equal to that of the crushing column teeth 8 of each group of crushing pieces and corresponds to one another, and one end of each first connecting rod 10 is hinged to the end part, located in the crushing roller 9, of the corresponding crushing column tooth 8;
the driving part is used for driving the adjusting shaft 14 to rotate;
during the use, drive regulating spindle 14 through the drive division and rotate, regulating spindle 14 drives connection pad 13 and rotates certain angle, and connection pad 13 drives first connecting rod 10 motion, and first connecting rod 10 drives the relative crushing roller 9 motion of broken column tooth 8 to adjust the outside length of broken column tooth 8 extension crushing roller 9.
In this embodiment, the driving part includes:
the single-stage flywheel 31 is fixedly installed at one end, extending to the outside of the box body 1, of the adjusting shaft 14, and the single-stage flywheel 31 is the prior art, is already applied to bicycles and the like, and is not described again;
the double-sided rack 30 is slidably mounted on the side wall of the box body 1 and positioned between the two single-stage flywheels 31, and the double-sided rack 30 is engaged with the two single-stage flywheels 31;
the fourth motor fixed on the side wall of the box body 1 can be fixed by bolts, the fourth motor is a stepping motor, an output shaft of the fourth motor is fixedly provided with an adjusting screw 29, and the adjusting screw 29 penetrates through the double-sided rack 30 along the length direction of the double-sided rack 30 and is in threaded connection with the double-sided rack 30;
the fourth motor and the first motor 34 are both electrically connected with a controller, the controller can be a single chip microcomputer or the like, the controller controls the intermittent start of the fourth motor, for example, the fourth motor is started to rotate for a set angle by matching with a timer and then stopped, the fourth motor is started again after a period of time, the intermittent work of the fourth motor is realized, and the controller controls the working state of the fourth motor to be opposite to that of the first motor 34; that is, when the fourth motor works, the first motor 34 stops, when the fourth motor stops, the first motor 34 works, further, the infrared sensor 32 is fixedly installed on the side wall of the box body 1 to play a role in stroke limitation, when the double-sided rack 30 moves to the position of the infrared sensor 32, the fourth motor keeps a stop state for a period of time, then rotates reversely, and drives the infrared sensor 32 to return to the initial position through the adjusting screw 29 to perform the next crushing operation;
it can be understood that the adjusting mechanism of the application can adjust the crushing degree step by step, avoid overload or damage, and protect the crushing unit.
Further, still include heating unit for the pitch after the heating melts the breakage, heating unit locates the heating intracavity of box 1, feed opening 15 and heating chamber intercommunication, the pitch after the breakage falls into reinforced intracavity by feed opening 15, heating unit includes:
the stirring shaft 5 is horizontally and rotatably arranged in the box body 1, one end of the stirring shaft 5 is connected with a second motor 17 for driving the stirring shaft 5 to rotate, and the second motor 17 is fixed on the outer side wall of the box body 1 and can be fixed by bolts;
the stirring device comprises a stirring shaft 5, a plurality of stirring rods 4 vertically fixed on the stirring shaft 5, heating wires are arranged in the stirring shaft 5 and the stirring rods 4, and a temperature sensor is arranged in a heating cavity and used for monitoring the temperature in the heating cavity;
the temperature component 6 is connected with the electric heating wire and the temperature sensor and used for regulating and controlling the temperature in the heating cavity, the principle of the temperature component is the same as that of the existing temperature control equipment, the temperature component can carry out heating with set temperature, the temperature sensor feeds back signals to the temperature component 6, the temperature component 6 controls the heating temperature of the electric heating wire, so that the temperature is controlled and the temperature can be regulated, in the embodiment, one end of the stirring shaft 5, which is far away from the second motor 17, is rotatably connected with a lead, and the lead is connected with the temperature component 6;
generate heat through the heating wire, the heat can heat pitch through (mixing) shaft 5 and the outside transmission of puddler 4, and during the heating, second motor 17 drives (mixing) shaft 5 and puddler 4 and rotates, can make pitch fully thermally equivalent, melts fast, has improved work efficiency.
Furthermore, a threaded rod 19 is rotatably mounted on a shaft section of the inner wall of the stirring shaft 5 close to the box body 1, the threaded rod 19 is perpendicular to the stirring shaft 5, a bevel gear 21 is fixed at one end of the threaded rod 19 far away from the stirring shaft 5, a bevel gear disc 20 meshed with the bevel gear 21 is fixed on the inner wall of the box body 1, a movable plate 22 is connected onto the threaded rod 19 in a threaded manner, a through hole for the stirring rod 4 to pass through is formed in the movable plate 22, a plurality of stirring rods 4 of the stirring shaft 5 far away from the movable plate 22 are respectively hinged with a second connecting rod 16, third connecting rods 18 which are equal in number and correspond to the second connecting rods 16 in one-to-one correspondence are hinged onto the movable plate 22, and one end of each third connecting rod 18 is hinged with the second connecting rod 16;
during operation, (mixing) shaft 5 drives threaded rod 19 and revolves, and threaded rod 19 revolves the in-process, because bevel gear 21 and bevel gear 20 mesh for bevel gear 21 drives threaded rod 19 rotation, and threaded rod 19 drives movable plate 22 and moves, and movable plate 22 drives third connecting rod 18 and moves, and third connecting rod 18 drives second connecting rod 16 and moves, and in movable plate 22, third connecting rod 18 and the second connecting rod 16 motion process, stirring position, angle change, have enlarged working range, make the pitch better be heated, have further improved and have melted efficiency.
It can be understood that the heating cavity is connected with an exhaust pipe, and the exhaust pipe is connected with the existing air purification equipment and used for purifying gas generated during asphalt melting so as to avoid environmental pollution;
in concrete implementation, be located in box 1 and heat the chamber below and be fixed with filter screen 3, filter screen 3 is the arc of epirelief, lie in filter screen 3 both ends on the wall of box 1 both sides and seted up row cinder notch 2, install the valve on row cinder notch 2, the manual row cinder notch 2 of opening of accessible valve, filter screen 3 can filter waste residue, stone, flocculus etc. in the pitch, improves the quality of using pitch, because filter screen 3 is the arc of epirelief for automatic along filter screen 3 to the motion of both sides row cinder notch 2 such as waste residue, convenient follow-up clearance to filter screen 3.
The preferred, be located 3 below of filter screen in the box 1 and be the heat preservation chamber, keep warm asphalt, the follow-up use of being convenient for, the heat preservation intracavity is equipped with the thermal insulation component, the thermal insulation component includes:
the asphalt mixing device comprises an electric heating plate 25 which is rotatably arranged in a heat insulation cavity, one end of the electric heating plate 25 is connected with a third motor 24 which drives the electric heating plate 25 to rotate, a plurality of through holes 23 are uniformly formed in the electric heating plate 25, the electric heating plate 25 is driven to rotate through the third motor 24 to heat and insulate asphalt, and the asphalt can be dispersed after passing through the through holes 23;
the electric heating plate 25 is electrically connected with the temperature control component through a lead, a temperature sensor is arranged in the heat preservation cavity, and the temperature sensor is electrically connected with the temperature control component.
Example 2
The embodiment of the invention provides an asphalt melting device for municipal road engineering, which comprises a box body 1 and a crushing unit arranged in the box body 1, wherein in the embodiment, a feed hopper 11 is arranged at the top of the box body 1, a discharge hole is arranged at the bottom of the box body 1, a support frame is further fixed at the bottom of the box body 1, the crushing unit is used for crushing asphalt to be melted, and the crushing unit comprises:
two crushing rollers 9 which are arranged in a crushing cavity of the box body 1 in a rotating mode and are spaced side by side can crush asphalt through the reverse rotating and matching of the two crushing rollers 9, the side wall of the crushing cavity is arc-shaped, the preferred circle center of the arc-shaped crushing roller is located on the axis of the crushing roller 9, a feed opening 15 is formed in the bottom of the crushing cavity, a screen is installed in the feed opening 15, and the screen can be fixedly installed through screws;
the power component is used for driving the two crushing rollers 9 to rotate, and the rotating directions of the two crushing rollers 9 are opposite;
a plurality of groups of crushing pieces are arranged on the side wall of the crushing roller 9 at intervals along the length direction of the crushing roller 9, each group of crushing pieces comprises a plurality of crushing column teeth 8 which are annularly arranged at intervals, the crushing column teeth 8 movably penetrate through the side wall of the crushing roller 9 and extend into the crushing roller 9, and preferably, the crushing column teeth 8 radially move along the crushing roller 9;
the adjusting mechanism is used for adjusting the length of the crushing column teeth 8 extending out of the crushing rollers 9, so that the crushing distance between the two crushing rollers 9 is adjusted, asphalt can be crushed step by step from coarse to fine, and the damage of the crushing rollers 9 caused by the overload jamming of equipment or too large acting force is avoided;
a plurality of plate bodies 12 mounted on the side walls of the crushing roller 9 at circumferential intervals, the plate bodies 12 being capable of fitting against the side walls of the crushing chamber for transporting the asphalt at the bottom of the crushing chamber to the top of the crushing chamber;
in specific implementation, the plate body 12 comprises a sleeve plate and a support plate movably arranged in the sleeve plate, the sleeve plate is fixed on the side wall of the crushing roller 9, a spring is fixedly connected between the support plate and the sleeve plate, the acting force of the spring on the support plate is towards one side of the crushing roller 9, a magnet 7 is arranged on the outer side of the side wall of the crushing cavity, the magnet 7 can be matched with the support plate in a magnetic attraction manner, when the support plate moves to the magnet 7, the support plate moves out of the sleeve plate and is attached to the side wall of the crushing cavity due to the attraction of the magnet 7 on the support plate, and after the support plate is separated from the magnet 7, the support plate retracts into the sleeve plate under the action of the spring;
the during operation, it is broken intracavity all to add by the feeding to wait to melt pitch, thereby it carries out the breakage to wait to melt pitch to drive two crushing rollers 9 through power pack, and simultaneously, pitch after preliminary breakage falls to broken chamber bottom, crushing roller 9 drives plate body 12 and rotates, plate body 12 drives the pitch of broken chamber bottom and moves to broken chamber top along broken chamber lateral wall, then fall and carry out breakage once more between two crushing rollers 9, and, adjust broken column tooth 8 step by step through adjustment mechanism and stretch out the outside length of crushing roller 9, make pitch broken more and more thin step by step, through the manifold cycles breakage, crushing effect is better, the life of crushing unit has been prolonged simultaneously.
Specifically, the power unit includes:
the first motor 34 is fixed on the side wall of the box body 1, and the first motor 34 can be fixed by adopting a bolt and is used for driving any one crushing roller 9 to rotate;
the straight gear 33 fixed on the mounting shaft of each crushing roller 9 is meshed with the straight gears 33 on the two crushing rollers 9, the first motor 34 drives the straight gear 33 on the mounting shaft of one crushing roller 9 to rotate, the straight gear 33 drives the other crushing roller 9 to rotate through the other straight gear 33, the rotation directions of the two crushing rollers 9 are opposite, and of course, the power component can also be of other structures and can drive the two crushing rollers 9 to rotate oppositely, so that excessive limitation is not performed.
In a specific implementation, the adjustment mechanism comprises:
each crushing roller 9 is concentrically and rotatably provided with an adjusting shaft 14, a plurality of connecting discs 13 are fixedly arranged on the adjusting shaft 14 along the length direction of the adjusting shaft, a welding fixing mode can be adopted, and the number of the connecting discs 13 is equal to that of the crushing pieces and corresponds to that of the crushing pieces one by one;
the first connecting rods 10 are eccentrically hinged to the connecting discs 13, the number of the first connecting rods 10 on each connecting disc 13 is equal to that of the crushing column teeth 8 of each group of crushing pieces and corresponds to one another, and one end of each first connecting rod 10 is hinged to the end part, located in the crushing roller 9, of the corresponding crushing column tooth 8;
the driving part is used for driving the adjusting shaft 14 to rotate;
during the use, drive regulating spindle 14 through the drive division and rotate, regulating spindle 14 drives connection pad 13 and rotates certain angle, and connection pad 13 drives first connecting rod 10 motion, and first connecting rod 10 drives the relative crushing roller 9 motion of broken column tooth 8 to adjust the outside length of broken column tooth 8 extension crushing roller 9.
In this embodiment, the driving part includes:
the single-stage flywheel 31 is fixedly installed at one end, extending to the outside of the box body 1, of the adjusting shaft 14, and the single-stage flywheel 31 is the prior art and already applied to bicycles and the like, and is not described again;
the double-sided rack 30 is slidably mounted on the side wall of the box body 1 and positioned between the two single-stage flywheels 31, and the double-sided rack 30 is engaged with the two single-stage flywheels 31;
the fourth motor fixed on the side wall of the box body 1 can be fixed by bolts, the fourth motor is a stepping motor, an output shaft of the fourth motor is fixedly provided with an adjusting screw 29, and the adjusting screw 29 penetrates through the double-sided rack 30 along the length direction of the double-sided rack 30 and is in threaded connection with the double-sided rack 30;
the fourth motor and the first motor 34 are both electrically connected with a controller, the controller can be a single chip microcomputer or the like, the controller controls the intermittent start of the fourth motor, for example, the fourth motor is started to rotate for a set angle by matching with a timer and then stopped, the fourth motor is started again after a period of time, the intermittent work of the fourth motor is realized, and the controller controls the working state of the fourth motor to be opposite to that of the first motor 34; that is, when the fourth motor works, the first motor 34 stops, when the fourth motor stops, the first motor 34 works, further, the infrared sensor 32 is fixedly installed on the side wall of the box body 1 to play a role in stroke limitation, when the double-sided rack 30 moves to the position of the infrared sensor 32, the fourth motor keeps a stop state for a period of time, then rotates reversely, and drives the infrared sensor 32 to return to the initial position through the adjusting screw 29 to perform the next crushing operation;
it can be understood that the adjusting mechanism of the application can adjust the crushing degree step by step, avoid overload or damage, and protect the crushing unit.
Further, still include heating unit for the pitch after the heating melts the breakage, heating unit locates the heating intracavity of box 1, feed opening 15 and heating chamber intercommunication, the pitch after the breakage falls into reinforced intracavity by feed opening 15, heating unit includes:
the stirring shaft 5 is horizontally and rotatably arranged in the box body 1, one end of the stirring shaft 5 is connected with a second motor 17 for driving the stirring shaft 5 to rotate, and the second motor 17 is fixed on the outer side wall of the box body 1 and can be fixed by bolts;
the stirring device comprises a stirring shaft 5, a plurality of stirring rods 4 vertically fixed on the stirring shaft 5, heating wires are arranged in the stirring shaft 5 and the stirring rods 4, and a temperature sensor is arranged in a heating cavity and used for monitoring the temperature in the heating cavity;
the temperature component 6 is connected with the electric heating wire and the temperature sensor and used for regulating and controlling the temperature in the heating cavity, the temperature component can carry out heating with set temperature by the same principle as that of the existing temperature control equipment, the temperature sensor feeds back signals to the temperature component 6, the temperature component 6 controls the heating temperature of the electric heating wire so as to control the temperature and also can regulate the temperature, and in the embodiment, one end of the stirring shaft 5, which is far away from the second motor 17, is rotatably connected with a lead wire, and the lead wire is connected with the temperature component 6;
generate heat through the heating wire, the heat can heat pitch through (mixing) shaft 5 and the outside transmission of puddler 4, and during the heating, second motor 17 drives (mixing) shaft 5 and puddler 4 and rotates, can make pitch fully thermally equivalent, melts fast, has improved work efficiency.
Furthermore, a threaded rod 19 is rotatably mounted on a shaft section of the inner wall of the stirring shaft 5 close to the box body 1, the threaded rod 19 is perpendicular to the stirring shaft 5, a bevel gear 21 is fixed at one end of the threaded rod 19 far away from the stirring shaft 5, a bevel gear disc 20 meshed with the bevel gear 21 is fixed on the inner wall of the box body 1, a movable plate 22 is connected onto the threaded rod 19 in a threaded manner, a through hole for the stirring rod 4 to pass through is formed in the movable plate 22, a plurality of stirring rods 4 of the stirring shaft 5 far away from the movable plate 22 are respectively hinged with a second connecting rod 16, third connecting rods 18 which are equal in number and correspond to the second connecting rods 16 in one-to-one correspondence are hinged onto the movable plate 22, and one end of each third connecting rod 18 is hinged with the second connecting rod 16;
during operation, (mixing) shaft 5 drives threaded rod 19 and revolves, and threaded rod 19 revolves the in-process, because bevel gear 21 and bevel gear 20 mesh for bevel gear 21 drives threaded rod 19 rotation, and threaded rod 19 drives movable plate 22 and moves, and movable plate 22 drives third connecting rod 18 and moves, and third connecting rod 18 drives second connecting rod 16 and moves, and in movable plate 22, third connecting rod 18 and the second connecting rod 16 motion process, stirring position, angle change, have enlarged working range, make the pitch better be heated, have further improved and have melted efficiency.
It can be understood that the heating cavity is connected with an exhaust pipe, and the exhaust pipe is connected with the existing air purification equipment and used for purifying gas generated during asphalt melting so as to avoid environmental pollution;
in concrete implementation, be located in box 1 and heat the chamber below and be fixed with filter screen 3, filter screen 3 is the arc of epirelief, lie in filter screen 3 both ends on the wall of box 1 both sides and seted up row cinder notch 2, install the valve on row cinder notch 2, the manual row cinder notch 2 of opening of accessible valve, filter screen 3 can filter waste residue, stone, flocculus etc. in the pitch, improves the quality of using pitch, because filter screen 3 is the arc of epirelief for automatic along filter screen 3 to the motion of both sides row cinder notch 2 such as waste residue, convenient follow-up clearance to filter screen 3.
The preferred, be located 3 below of filter screen in the box 1 and be the heat preservation chamber, keep warm asphalt, the follow-up use of being convenient for, the heat preservation intracavity is equipped with the thermal insulation component, the thermal insulation component includes:
the asphalt insulation device comprises an electric heating plate 25 which is rotatably arranged in an insulation cavity, wherein one end of the electric heating plate 25 is connected with a third motor 24 for driving the electric heating plate 25 to rotate, a plurality of through holes 23 are uniformly formed in the electric heating plate 25, the electric heating plate 25 is driven by the third motor 24 to rotate, asphalt is heated and insulated, and can be dispersed after passing through the through holes 23;
the electric heating plate 25 is electrically connected with the temperature control component through a lead, a temperature sensor is installed in the heat preservation cavity, and the temperature sensor is electrically connected with the temperature control component.
Further, as shown in fig. 5 to 6, a discharging port at the bottom of the box body 1 is provided with a discharging assembly, and the discharging assembly comprises:
the telescopic rod 26 is vertically arranged under the discharge port, and the telescopic rod 26 can be fixed on the support frame through screws;
the fifth motor 27 is fixed at the top end of the telescopic rod 26, an umbrella-shaped plate 28 is fixedly installed on an output shaft of the fifth motor 27, the umbrella-shaped plate 28 can seal the discharge hole, when the telescopic rod 26 is shortened, the fifth motor 27 and the umbrella-shaped plate 28 are driven to descend, so that the discharge hole is opened, the discharge hole can be opened, and meanwhile, the fifth motor 27 drives the umbrella-shaped plate 28 to rotate, so that the asphalt is uniformly dispersed to the periphery, and the paving of the asphalt in municipal road engineering is facilitated;
be fixed in umbrella-shaped plate 28 and go up and be located the intraoral stirring piece of discharge gate, umbrella-shaped plate 28 drives the stirring piece and rotates, and the stirring piece stirs the intraoral pitch of discharge gate, prevents that pitch sclerosis from blockking up the discharge gate.
As shown in fig. 7, a plurality of elastic members 35 are installed on the upper surface of the filter screen 3 at intervals, the top ends of the elastic members 35 extend to the rotation track of the stirring rod 4 and/or the movable plate 22, that is, when the stirring rod 4 and/or the movable plate 22 rotate, the elastic members 35 can contact and separate from the elastic members 35, so that the elastic members 35 vibrate, and the elastic members 35 drive the filter screen 3 to vibrate, thereby facilitating the movement of the waste residues on the filter screen 3 towards the residue discharge port 2.
In conclusion, the invention provides an asphalt melting device for municipal road engineering, which is provided with a crushing unit, wherein the crushing unit comprises crushing rollers 9, a power part, crushing pieces, an adjusting mechanism and a plate body 12, during operation, asphalt to be melted is fed into a crushing cavity through a feed material, the power part drives the two crushing rollers 9 to rotate so as to crush the asphalt to be melted, meanwhile, the primarily crushed asphalt falls to the bottom of the crushing cavity, the crushing rollers 9 drive the plate body 12 to rotate, the plate body 12 drives the asphalt at the bottom of the crushing cavity to move to the top of the crushing cavity along the side wall of the crushing cavity and then fall between the two crushing rollers 9 to be crushed again, and the adjusting mechanism adjusts the length of the crushing column teeth 8 extending out of the crushing rollers 9 step by step so that the asphalt is crushed more and more fine step by step, the repeated cyclic crushing is realized, the crushing effect is better, and the adjustment of the crushing degree can be performed step by step, the overload or damage condition is avoided, the crushing unit is protected, and the service life of the crushing unit is prolonged; the asphalt melting device is provided with a heating unit, the heating unit comprises a stirring shaft 5, a stirring rod 4, a temperature part 6, a threaded rod 19, a bevel gear 21, a bevel gear disc 20, a movable plate 22, a second connecting rod 16 and a third connecting rod 18, in operation, the stirring shaft 5 drives the threaded rod 19 to revolve, in the revolving process of the threaded rod 19, the bevel gear 21 is meshed with the bevel gear disc 20, so that the bevel gear 21 drives the threaded rod 19 to rotate, the threaded rod 19 drives the movable plate 22 to move, the movable plate 22 drives the third connecting rod 18 to move, the third connecting rod 18 drives the second connecting rod 16 to move, in the moving process of the movable plate 22, the third connecting rod 18 and the second connecting rod 16, the stirring position and the angle are changed, the working range is expanded, asphalt is heated better, and the melting efficiency is further improved.
The above examples are only used to illustrate the technical solutions of the present invention, and do not limit the scope of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from these embodiments without making any inventive step, fall within the scope of the present invention.
Claims (10)
1. The utility model provides a device is melted with pitch for town road engineering, includes the box and locates the crushing unit in the box, crushing unit is used for the breakage to wait to melt pitch, its characterized in that, crushing unit includes:
the crushing device comprises a box body, two crushing rollers, a feed opening and a screen, wherein the two crushing rollers are arranged in a crushing cavity of the box body in a rotating mode and are spaced side by side;
the power component is used for driving the two crushing rollers to rotate;
the crushing roller comprises a plurality of groups of crushing pieces which are arranged on the side wall of the crushing roller at intervals along the length direction of the crushing roller, each group of crushing pieces comprises a plurality of crushing column teeth which are arranged at intervals in the circumferential direction, and the crushing column teeth movably penetrate through the side wall of the crushing roller and extend into the crushing roller;
the adjusting mechanism is used for adjusting the length of the crushing column teeth extending out of the crushing roller;
and the plate bodies can be attached to the side wall of the crushing cavity and used for conveying the asphalt at the bottom of the crushing cavity to the top of the crushing cavity.
2. The asphalt melting apparatus for municipal road engineering according to claim 1, wherein said power unit comprises:
the first motor is fixed on the side wall of the box body and is used for driving any one crushing roller to rotate;
the straight gear fixed on the mounting shaft of each crushing roller is meshed with the straight gears on the two crushing rollers.
3. The asphalt melting apparatus for municipal road engineering according to claim 1, wherein said adjusting mechanism comprises:
each crushing roller is concentrically and rotatably provided with an adjusting shaft, a plurality of connecting discs are fixedly arranged on the adjusting shaft along the length direction of the adjusting shaft, and the number of the connecting discs is equal to that of the crushing pieces and corresponds to that of the crushing pieces one by one;
the first connecting rods are eccentrically hinged to the connecting discs, the number of the first connecting rods on each connecting disc is equal to that of the crushing column teeth of each group of crushing pieces and corresponds to that of the crushing column teeth one by one, and one end of each first connecting rod is hinged to the end part, located in the crushing roller, of the corresponding crushing column tooth;
the driving part is used for driving the adjusting shaft to rotate.
4. The asphalt melting apparatus for town road works according to claim 3, wherein the driving portion includes:
the single-stage flywheel is fixedly arranged at one end of the adjusting shaft extending to the outside of the box body;
the double-sided rack is slidably arranged on the side wall of the box body and positioned between the two single-stage flywheels, and the double-sided rack is meshed with the two single-stage flywheels;
the fourth motor is fixed on the side wall of the box body, an output shaft of the fourth motor is fixedly provided with an adjusting screw rod, and the adjusting screw rod penetrates through the double-sided rack along the length direction of the double-sided rack and is in threaded connection with the double-sided rack;
the fourth motor and the first motor are both electrically connected with the controller, the fourth motor is controlled to be started intermittently by the controller, and the fourth motor and the first motor are controlled to be in opposite working states by the controller.
5. The asphalt melting device for municipal road engineering according to claim 1, further comprising a heating unit for heating and melting the crushed asphalt, wherein the heating unit is disposed in a heating cavity of the box body, the feed opening is communicated with the heating cavity, and the heating unit comprises:
the stirring shaft is horizontally and rotatably arranged in the box body, one end of the stirring shaft is connected with a second motor for driving the stirring shaft to rotate, and the second motor is fixed on the outer side wall of the box body;
the stirring shafts and the stirring rods are internally provided with heating wires, and a temperature sensor is arranged in the heating cavity;
and the temperature component is connected with the electric heating wire and the temperature sensor and is used for regulating and controlling the temperature in the heating cavity.
6. The asphalt melting device for the municipal road engineering according to claim 5, wherein a threaded rod is rotatably mounted on a shaft section of the stirring shaft close to the inner wall of one side of the tank body, the threaded rod is perpendicular to the stirring shaft, a bevel gear is fixed at the end of the threaded rod far away from the stirring shaft, a bevel gear disc meshed with the bevel gear is fixed on the inner wall of the tank body, a movable plate is in threaded connection with the threaded rod, a through hole for the stirring rod to pass through is formed in the movable plate, a plurality of stirring rods of the stirring shaft far away from one side of the movable plate are respectively hinged with a second connecting rod, a plurality of third connecting rods which are equal in number and correspond to the second connecting rods one by one are hinged with the movable plate, and one end of each third connecting rod is hinged with the second connecting rod.
7. The asphalt melting device for the municipal road engineering according to claim 6, wherein a filter screen is fixed below the heating cavity in the box body, the filter screen is in an upward convex arc shape, slag discharge ports are formed in two ends of the filter screen on two side walls of the box body, and valves are installed on the slag discharge ports.
8. The asphalt melting device for the municipal road engineering according to claim 1, wherein a heat preservation cavity is formed in the box body below the filter screen, a heat preservation component is arranged in the heat preservation cavity, and the heat preservation component comprises:
the electric heating plate is rotatably arranged in the heat insulation cavity, one end of the electric heating plate is connected with a third motor for driving the electric heating plate to rotate, and a plurality of through holes are uniformly formed in the electric heating plate;
the electric heating plate is electrically connected with the temperature control component through a lead, a temperature sensor is installed in the heat preservation cavity, and the temperature sensor is electrically connected with the temperature control component.
9. The asphalt melting device for municipal road engineering according to claim 6, wherein a discharge port at the bottom of the box body is provided with a blanking assembly, and the blanking assembly comprises:
the telescopic rod is arranged under the discharge port and is vertically arranged;
the output shaft of the fifth motor is fixedly provided with an umbrella-shaped plate which can seal the discharge hole;
the stirring piece is fixed on the umbrella-shaped plate and is positioned in the discharge port.
10. The asphalt melting apparatus for municipal road engineering according to claim 7, wherein a plurality of elastic members are installed at intervals on the upper surface of the filter screen, and the tips of the elastic members extend to the rotation locus of the stirring rod and/or the movable plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210628897.7A CN114960346B (en) | 2022-06-06 | 2022-06-06 | Asphalt melting device for municipal road engineering |
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| CN202210628897.7A CN114960346B (en) | 2022-06-06 | 2022-06-06 | Asphalt melting device for municipal road engineering |
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| CN114960346B CN114960346B (en) | 2023-05-19 |
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| CN216141491U (en) * | 2021-05-14 | 2022-03-29 | 蔡娜娜 | Asphalt melting and stirring device |
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| CN114960346B (en) | 2023-05-19 |
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