Extrusion type asphalt pavement milling, planing, crushing and screening device
Technical Field
The invention relates to the technical field of asphalt processing, in particular to an extrusion type asphalt pavement milling material crushing and screening device.
Background
The asphalt pavement regenerating technology is a complete set of technological process for making a regenerated asphalt mixture with a certain pavement performance by digging, recovering, crushing and screening old asphalt pavement to be renovated or discarded, properly matching with new aggregate and new asphalt material, and remixing the mixture to form a regenerated asphalt mixture with a certain pavement performance, which is used for paving a pavement surface layer or a base course. The plant mixing hot recycling method is a construction method for milling and digging an old asphalt pavement, transporting the old asphalt pavement back to a mixing plant, then intensively crushing the old asphalt pavement, carrying out proportioning design according to quality requirements of different levels of the pavement, determining the proportion of materials such as an old asphalt mixture, a regenerant, a new asphalt material, a new aggregate and the like, and then stirring the materials in a mixer to form a new mixture for paving the asphalt pavement. The method is suitable for cold milling and hot spreading construction process of road surface, and may be used in repairing the upper, middle and lower layers of asphalt road surface and reinforcing base course and road bed.
The old asphalt mixture (RAP) is fragments obtained by milling and crushing old road surfaces, wherein most of the fragments are a combination of a plurality of original road surface mineral aggregates and old asphalt which are bonded into a mass and are not single aggregates. The differences of old asphalt mixtures from different sources are also large, and the agglomeration conditions of the old asphalt mixtures are greatly different due to the influence of a plurality of factors such as different gradation, different milling thicknesses, different milling machines and the like.
Thus, the pre-treatment of asphalt road milling stock (RAP) is a very important procedure, mainly for the treatment of large "lumps" in the sample, because when the oversized, caked old mix is heated, a lot of energy is wasted due to the poor thermal conductivity of the asphalt. Furthermore, the variability of the aggregate grading, the oilstone ratio and other material performances of the RAP is a technical bottleneck for restricting the high blending and high-level application of the hot recycled asphalt mixture. Therefore, pretreatment processes such as crushing, screening, grading and stacking of the asphalt pavement milling material (RAP) are particularly necessary.
At present, in actual work, crushing methods include manual crushing, mechanical crushing, thermal decomposition and the like. The particular method employed will depend upon the particular circumstances. For large-scale hot recycling mixed material mixing plants, mechanical crushing is often adopted, and meanwhile, a certain requirement is also provided for a crusher, so that old asphalt materials cannot be crushed too finely, and the production rate of the crusher is required to be matched with the production rate parameter of a mixer. In actual engineering, due to the lack of RAP pretreatment equipment and technology, the pretreatment of milling materials is at a simple and extensive technical level, which has an extremely adverse effect on the development of the asphalt mixture regeneration technology of highway engineering in China. In the prior art, the manual crushing method is backward, the time is long, the particle size of the crushed old pavement material is not uniform, and the crushing quality is difficult to guarantee.
Therefore, the inventor provides an extrusion type asphalt pavement milling, planing, crushing and screening device with study and improvement on the existing structure and deficiency in view of the experience of abundant design development and actual manufacturing of related industries for many years, so as to achieve the purpose of higher practical value.
Disclosure of Invention
In order to solve the problems mentioned in the background technology, the invention provides an extrusion type asphalt pavement milling material crushing and screening device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the extrusion type asphalt pavement milling material crushing and screening device comprises a box body and a feed inlet, wherein the feed inlet is formed in one side of the upper end of the box body, a fixed block is arranged on one side of the inner top of the box body, a plurality of groups of grooves are formed in the inclined plane of the fixed block, strong springs are connected in the grooves, the end parts of the strong springs are connected with movable extrusion plates, and the movable extrusion plates are movably connected with the inner top wall of the box body;
movable broken pieces are arranged on the other side of the inner top of the box body;
the horizontal main rotation axis that is equipped with between the inner wall of box both sides, the below of main rotation axis is equipped with first filter screen, the circumference lateral wall of first filter screen encircles and is equipped with a plurality of groups vibration mechanism.
Preferably, a T-shaped limiting block is fixed on the upper end wall of the movable fragment, the T-shaped limiting block extends towards the inner top wall of the box body, and a T-shaped groove corresponding to the T-shaped limiting block is formed in the inner top wall of the box body;
the movable support rod is horizontally provided with two symmetrical movable support rods on one side of the outer wall of the movable broken block, the movable support rods penetrate through the outwardly extending end of the side wall of the box body to be provided with a mounting plate, a first screw rod is inserted into horizontal threads of the inner wall of the mounting plate, one end of the first screw rod is connected with a first rotating shaft through a first coupler, one end of the first rotating shaft is provided with a first motor, and the first motor is mounted on the outer side wall of the box body.
Preferably, feeding crushing plates are symmetrically arranged on two sides of the upper end of the feeding hole and are rotationally connected with the feeding hole, a limiting sliding block is connected to one side of the outer wall of each feeding crushing plate in a sliding mode through a limiting sliding groove, and an L-shaped supporting rod is connected to one side of each limiting sliding block;
a second screw rod is connected between the two L-shaped supporting rods in a threaded manner, one end of the second screw rod is connected with a second rotating shaft through a second coupler, and one end of the second rotating shaft, which is far away from the second coupler, is connected with a second motor;
and two sides of the upper end of the box body are respectively fixed with a fixed rod, the side wall of one fixed rod is provided with a shaft rod, and the inner wall of the other fixed rod is horizontally inserted with a second rotating shaft.
Preferably, the two sides of the outer wall of the main rotating shaft are symmetrically provided with a U-shaped stirring shaft, and one side of the outer wall of the U-shaped stirring shaft is provided with a plurality of groups of first blades;
and a connecting rod is fixedly connected between the U-shaped stirring shaft and the main rotating shaft, and second blades are symmetrically arranged on two sides of the outer wall of the connecting rod.
Preferably, the vibration mechanism comprises a clamping slide block, a movable groove is formed in the side wall of the clamping slide block, a limiting support rod is perpendicularly arranged in the movable groove, a support block is movably sleeved on the outer wall of the limiting support rod and fixed to the circumferential side wall of the first filter screen, and a vibration motor is arranged on the inner wall of the support block.
Preferably, the outer walls of the upper end and the lower end of the limit supporting rod are respectively sleeved with a first spring, and the inner wall of the box body is provided with an annular sliding chute corresponding to the clamping sliding block;
the upper and lower walls of the clamping slide block are respectively provided with a limiting clamping block, and the inner wall of the annular sliding groove is provided with an annular limiting clamping groove corresponding to the limiting clamping block.
Preferably, a vertical support rod is arranged at the center of the first filter screen and is connected with a connecting rod through a damping part;
the outer wall of connecting rod has cup jointed first bevel gear, and the meshing of upper end one side of first bevel gear is connected with second bevel gear, and the inner wall level of second bevel gear is pegged graft and is had the connecting axle, the lateral wall that the connecting axle runs through the box outwards extends the end and cup joints first drive wheel.
Preferably, the main rotating shaft penetrates through the side wall of the box body, the end extending outwards is sleeved with a second driving wheel, and a driving belt is in driving connection between the second driving wheel and the first driving wheel;
the end part of the connecting shaft is sleeved with a first straight gear, a second straight gear is meshed and connected below the first straight gear, a third rotating shaft is horizontally inserted into the inner wall of the second straight gear, one end of the third rotating shaft is connected with a third motor, and the third motor is fixed on one side of the outer wall of the box body.
Preferably, the lower extreme of connecting rod is equipped with the column type base, and the outer wall of column type base is fixed with the collecting vat, and the up end of collecting vat is equipped with one deck second filter screen.
Compared with the prior art, the invention has the beneficial effects that:
1. the feeding crushing plate is arranged, so that the preliminary extrusion crushing of the large asphalt pavement milling material is completed, and the subsequent processing difficulty is reduced;
2. the primarily crushed asphalt pavement milling material is secondarily crushed under the common extrusion of the movable extrusion plate and the movable crushing block, so that the subsequent cutting difficulty is further reduced;
3. through the common cutting and crushing of the first blade and the second blade, milled material particles are uniform and easy to screen;
4. through setting up first filter screen, can improve screening quality and efficiency greatly to milling and planing rotatory vibration screening on one side of the material granule.
In conclusion, the invention overcomes the defects of the prior art, has reasonable design, can carry out secondary crushing on the massive asphalt pavement milling material, simultaneously ensures the cutting quality and the uniform particles, and has higher social use value and application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural view of embodiment 2 of the present invention;
FIG. 3 is an enlarged view of the structure A of the present invention;
FIG. 4 is an enlarged view of the structure B of the present invention;
FIG. 5 is an enlarged view of the structure C of the present invention;
FIG. 6 is a top view of a collection trough of the present invention.
In the figure: the device comprises a box body 1, a fixed block 2, a movable extrusion plate 3, a strong spring 4, movable broken blocks 5, a T-shaped limiting block 51, a movable support rod 52, a mounting plate 53, a first motor 54, a first coupler 55, a first screw rod 56, a feeding broken plate 6, an L-shaped support rod 61, a limiting slide block 62, a second screw rod 63, a fixing rod 64, a second coupler 65, a second motor 66, a main rotating shaft 7, a U-shaped stirring shaft 71, a first blade 72, a connecting rod 73, a second blade 74, a first filter screen 8, a vibrating mechanism 9, a supporting block 91, a vibrating motor 92, a limiting support rod 93, a first spring 94, a clamping slide block 95, a movable groove 96, a limiting clamping block 97, an annular chute 98, a vertical support rod 10, a shock absorption part 11, a connecting rod 12, a first bevel gear 13, a second bevel gear 14, a connecting shaft 15, a first transmission wheel 16, a transmission belt 17, a second transmission wheel 18, a first straight gear 19, a second straight gear 20, a third motor 21, a column-shaped base 22, a collecting tank 23, a second filter screen 24 and a limiting block 25.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 and 4-6, the extrusion type asphalt pavement milling material crushing and screening device comprises a box body 1 and a feed inlet, wherein the feed inlet is formed in one side of the upper end of the box body 1, a fixed block 2 is arranged on one side of the inner top of the box body 1, a plurality of groups of grooves are formed in the inclined surface of the fixed block 2, a strong spring 4 is connected in each groove, the end part of each strong spring 4 is connected with a movable extrusion plate 3, the movable extrusion plates 3 are movably connected with the inner top wall of the box body 1, and a plurality of groups of bulges are distributed on one side, facing a movable fragment crushing block 5, of each movable extrusion plate 3, so that the asphalt pavement milling material can be crushed conveniently;
the other side of the inner top of the box body 1 is provided with movable broken pieces 5, and the outer walls of the movable broken pieces 5 facing the movable extrusion plate 3 are inclined surfaces and correspond to the inclined surfaces, so that the milling materials can be extruded and crushed conveniently; the upper end wall of the movable broken block 5 is fixedly provided with a T-shaped limiting block 51, the T-shaped limiting block 51 extends towards the inner top wall of the box body 1, the inner top wall of the box body 1 is provided with a T-shaped groove corresponding to the T-shaped limiting block 51, and the T-shaped limiting block 51 is limited through the T-shaped groove, so that the movable broken block 5 is ensured to stably and horizontally move;
two symmetrical movable support rods 52 are horizontally arranged on one side of the outer wall of the movable fragment 5, the movable support rods 52 penetrate through the side wall of the box body 1 and are provided with mounting plates 53 at the outwards extending ends, first screw rods 56 are inserted into the horizontal threads of the inner wall of the mounting plates 53, one ends of the first screw rods 56 are connected with first rotating shafts through first couplers 55, one ends of the first rotating shafts are provided with first motors 54, and the first motors 54 are arranged on the outer side wall of the box body 1;
a main rotating shaft 7 is horizontally arranged between the inner walls of the two sides of the box body 1, a first filter screen 8 is arranged below the main rotating shaft 7, and a plurality of groups of vibration mechanisms 9 are arranged on the circumferential side wall of the first filter screen 8 in a surrounding manner; the vibrating mechanism 9 comprises a clamping sliding block 95, a movable groove 96 is formed in the side wall of the clamping sliding block 95, a limiting support rod 93 is vertically arranged in the movable groove 96, a support block 91 is movably sleeved on the outer wall of the limiting support rod 93, the support block 91 is fixed on the circumferential side wall of the first filter screen 8, a vibrating motor 92 is arranged on the inner wall of the support block 91, the vibrating motor 92 can vibrate the support block 91, and a certain vibrating effect is achieved under the action of elastic force of a first spring 94.
The outer walls of the upper end and the lower end of the limiting support rod 93 are respectively sleeved with a first spring 94, and the inner wall of the box body 1 is provided with an annular sliding groove 98 corresponding to the clamping sliding block 95;
the upper and lower walls of the clamping slider 95 are respectively provided with a limiting clamping block 97, and the inner wall of the annular chute 98 is provided with an annular limiting clamping groove corresponding to the limiting clamping block 97.
The first filter screen 8 can rotate and simultaneously perform vibration screening on the crushed milled materials, so that the quality of the milled materials is improved;
u-shaped stirring shafts 71 are symmetrically arranged on two sides of the outer wall of the main rotating shaft 7, a plurality of groups of first blades 72 are arranged on one side of the outer wall of each U-shaped stirring shaft 71, a connecting rod 73 is fixedly connected between each U-shaped stirring shaft 71 and the main rotating shaft 7, second blades 74 are symmetrically arranged on two sides of the outer wall of each connecting rod 73, and the first blades 72 and the second blades 74 respectively cut and crush the milled materials and sieve the milled materials after the milled materials are cut uniformly;
the center of the first filter screen 8 is provided with a vertical support rod 10, the vertical support rod 10 is connected with a connecting rod 12 through a damping part 11, the outer wall of the connecting rod 12 is sleeved with a first bevel gear 13, one side of the upper end of the first bevel gear 13 is connected with a second bevel gear 14 in a meshing manner, the inner wall of the second bevel gear 14 is horizontally inserted with a connecting shaft 15, and the end, extending outwards, of the connecting shaft 15 penetrating through the side wall of the box body 1 is sleeved with a first transmission wheel 16.
The main rotating shaft 7 penetrates through the side wall of the box body 1, the end extending outwards is sleeved with a second driving wheel 18, and a driving belt 17 is connected between the second driving wheel 18 and the first driving wheel 16 in a driving mode;
the end of the connecting shaft 15 is sleeved with a first straight gear 19, a second straight gear 20 is engaged and connected below the first straight gear 19, a third rotating shaft is horizontally inserted into the inner wall of the second straight gear 20, one end of the third rotating shaft is connected with a third motor 21, and the third motor 21 is fixed on one side of the outer wall of the box body 1.
A cylindrical base 22 is arranged at the lower end of the connecting rod 12, a collecting tank 23 is fixed on the outer wall of the cylindrical base 22, a layer of second filter screen 24 is arranged on the upper end face of the collecting tank 23, the aperture of a filter hole of the second filter screen 24 is smaller than that of a filter hole of the first filter screen 8, and after further screening by the second filter screen 24, the small-particle milling materials meeting the requirements enter the collecting tank 23 to be collected and stored;
the circumferential side wall of the collecting groove 23 is annularly provided with a plurality of groups of annular limiting fixture blocks 25, the annular limiting fixture blocks 25 extend towards the inner wall of the box body 1, and the inner wall of the box body 1 is provided with annular limiting sliding grooves corresponding to the annular limiting fixture blocks 25.
Example 2
Referring to fig. 2-6, the difference between this embodiment and embodiment 1 is that the feed crushing plates 6 are symmetrically arranged on both sides of the upper end of the feed inlet, the feed crushing plates 6 are rotatably connected with the feed inlet, one side of the outer wall of the feed crushing plates 6 is slidably connected with a limiting slide block 62 through a limiting slide groove, and one side of the limiting slide block 62 is connected with an L-shaped strut 61;
a second screw 63 is in threaded connection between the two L-shaped supporting rods 61, one end of the second screw 63 is connected with a second rotating shaft through a second coupling 65, one end, far away from the second coupling 65, of the second rotating shaft is connected with a second motor 66, two sides of the upper end of the box body 1 are respectively fixed with fixing rods 64, the side wall of one fixing rod 64 is provided with a shaft rod, the inner wall of the other fixing rod 64 is horizontally inserted with the second rotating shaft, and the outer walls of two ends of the second screw 63 are respectively provided with a positive thread and a negative thread;
the second motor 66 drives the second rotating shaft to rotate, and drives the second screw rod 63 to rotate under the action of the second coupler 65, the second screw rod 63 drives the L-shaped supporting rods 61 at the two ends to horizontally move, and the feeding crushing plate 6 is driven to extrude towards the middle through the limiting slide block 62, so that the asphalt pavement milling material with large specification is preliminarily crushed.
Other undescribed structures refer to example 1.
The working principle is as follows: when the asphalt pavement milling and crushing device is used, a large asphalt pavement milling and planing material is thrown to a feed inlet, the milling and planing material is initially pressurized and crushed by the feeding crushing plate 6 under the driving of the second motor 66, and the primarily crushed milling and planing material enters the box body 1 and falls into a gap between the movable extrusion plate 3 and the movable crushing block 5;
at the moment, the first motor 54 is started, the first screw rod 56 is driven to rotate under the action of the first coupler 55, then the movable broken blocks 5 are driven to horizontally move through the movable support rod 52 and the mounting plate 53, the milled materials are pressurized and crushed towards the movable extrusion plate 3, the movable extrusion plate 3 moves under the elastic support of the strong spring 4, and the secondary crushing of the milled materials is completed;
the milled materials subjected to secondary crushing enter the box body 1, are cut and crushed by the first blade 72 and the second blade 74 together, fall into the first filter screen 8 after being uniformly cut, and are screened, at the moment, the second bevel gear 14 at the end part of the connecting shaft 15 drives the first bevel gear 13 to rotate and drives the connecting rod 12 to rotate under the driving action of the third motor 21, so that the first filter screen 8 and the collecting tank 23 rotate;
when the first filter screen 8 rotates, the vibration mechanism 9 is arranged on the circumferential side wall, so that the first filter screen 8 can rotate and simultaneously perform vibration screening on the crushed milled materials, and the quality of the milled materials is improved;
and the material of milling and planing through preliminary screening continues downwards and drops to second filter screen 24, at this moment under the rotatory effect of collecting vat 23, mills and mills the material and further sieve to improve the screening quality who mills the material greatly, make its granule more even, the quality is more excellent.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.