CN113502709A - Construction process of modified asphalt pavement surface layer - Google Patents
Construction process of modified asphalt pavement surface layer Download PDFInfo
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- CN113502709A CN113502709A CN202110837491.5A CN202110837491A CN113502709A CN 113502709 A CN113502709 A CN 113502709A CN 202110837491 A CN202110837491 A CN 202110837491A CN 113502709 A CN113502709 A CN 113502709A
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- Prior art keywords
- modified asphalt
- rotating shaft
- rod
- paver
- construction
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
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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
- E01C19/48—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
Abstract
The invention discloses a construction process of a modified asphalt pavement surface layer; the method comprises the following steps: construct the pavement surface course through the paver, construct the pavement surface course through the paver and include following step: firstly, placing the modified asphalt in a stirring device of a paver to stir; then the stirred modified asphalt is transported to a second discharge port of the paver through a transportation device of the paver and is placed on a construction pavement surface layer; then compacting the modified asphalt by using a road pressing mechanism of a paver; and finally, repeating the operation until the thickness of the modified asphalt layer reaches the preset thickness of the process requirement, finishing the construction of the pavement layer, and solving the technical problems that the process quality is easy to generate in one-step molding of asphalt pavement construction and the like by changing the asphalt used for construction into the modified asphalt and compacting the modified asphalt for multiple times by using a paver.
Description
Technical Field
The invention relates to a pavement construction process, in particular to a modified asphalt pavement surface layer construction process.
Background
The modified asphalt is a main road surface material used in road engineering at home and abroad. Modern road traffic is characterized by large traffic flow, fast speed and high load capacity, so the requirements for the quality of the road surface are continuously improved, but the process quality problem is easy to generate by one-step molding in the construction of the asphalt road surface at the present stage.
Aiming at the defects of the prior art, the invention provides a modified asphalt pavement surface layer construction process.
Disclosure of Invention
The invention provides a modified asphalt pavement surface layer construction process, which is used for solving the technical problem that the process quality is easy to generate by one-step molding of asphalt pavement construction.
In order to solve the technical problem, the invention discloses a modified asphalt pavement surface layer construction process, which comprises the following steps of constructing a pavement surface layer by a paver:
s1, placing the modified asphalt in a stirring device of a paver for stirring;
s2, conveying the stirred modified asphalt to a second discharge port of the paver through a conveying device of the paver and placing the modified asphalt on a construction pavement surface layer;
s3, compacting the modified asphalt by using a paver pressing mechanism;
and S4, repeating the operations until the thickness of the modified asphalt layer reaches the preset thickness of the process requirement, and finishing the construction of the pavement layer.
Preferably, the modified asphalt pavement surface layer construction process comprises the following components: straight-run asphalt, oxidized asphalt and a modifier.
Preferably, the construction process of the modified asphalt pavement surface course comprises the following steps: device shell, device shell upper end is provided with the end cover, the end cover lower extreme is provided with the pivot, the left and right sides of pivot is rotated and is installed inside device shell, agitating unit includes: a plurality of stirring rods are arranged on the periphery of the rotating shaft;
a motor is arranged outside one end of the device shell and is fixedly connected with one end of the rotating shaft;
the lower end of the device shell is provided with a first discharge hole which can be opened and closed, and the materials fall to the conveying device after passing through the first discharge hole;
a conveying device is arranged below the first discharge hole, and a second discharge hole is formed in one end of the conveying device;
the lower end of the conveying device is provided with a plurality of hydraulic rods, and the lower end of each hydraulic rod is provided with a road rolling mechanism.
Preferably, the transportation device comprises:
the crawler belt, the main transmission bevel gear, the rotating shaft and the crawler wheel;
two crawler wheels are symmetrically arranged below the rotating shaft, and a crawler belt is arranged on the two crawler wheels;
one side of the crawler wheel close to the motor is provided with an auxiliary transmission bevel gear, the auxiliary transmission bevel gear is connected with a main transmission bevel gear in a meshing manner, the main transmission bevel gear is fixedly arranged on a rotating shaft, and one end of the rotating shaft is fixedly connected with the motor.
Preferably, in the construction process of the modified asphalt pavement surface layer, a road pressing mechanism is arranged in a housing of the lower end device of the hydraulic rod, and the road pressing mechanism comprises:
the device comprises a pressing wheel, a road roller motor, a transmission belt and a transmission shaft;
the lower end of the hydraulic rod is rotatably provided with a transmission shaft, and a pinch roller is sleeved on the periphery of the transmission shaft;
and a road pressing motor is fixedly arranged in the shell of the lower end device of the hydraulic rod and is connected with the transmission shaft through a transmission belt.
Preferably, the modified asphalt pavement surface layer construction process, one side of the motor is kept away from to the outside of device shell is provided with turns to the device, turn to the device and include:
the main rotating rod, the steering wheel, the connecting rod and the steering device shell;
turn to device casing fixed mounting and install main bull stick in the outside of device shell, turn to the inside rotation of device casing, the fixed cover of main bull stick lower extreme has connect the connecting rod, the connecting rod both ends are rotated and are installed the directive wheel, connecting rod and directive wheel all set up outside the device shell, the device shell sets up the rotatory opening of confession directive wheel.
Preferably, the modified asphalt pavement surface layer construction process, turn to inside the turning device casing and be provided with directive wheel fixing device, directive wheel fixing device includes:
the fixing plate, the clamping rod, the fixing rod, the pulley, the loop bar spring, the internal thread plate, the trapezoidal block and the threaded rod are connected with the rotating shaft;
the inner thread plate is arranged in the steering device shell and is in contact with the device shell, internal threads are arranged in the inner thread plate, the threaded rod is in threaded connection with the internal threads arranged in the inner thread plate, and a trapezoidal block is fixedly arranged at one end, far away from the inner thread plate, of the threaded rod;
one end of the inner thread plate, which is far away from the device shell, is symmetrically sleeved with one end of a sleeve rod, the other end of the sleeve rod is fixedly connected with one end of a fixed rod, the other end of the fixed rod is fixedly provided with a connecting rotating shaft, the connecting rotating shaft is rotatably provided with clamping rods, and one sides, which are close to each other, of the two symmetrically arranged clamping rods are fixedly provided with a fixed plate;
a pulley is rotatably arranged on one end of the clamping rod, which is far away from the fixed plate, and the pulley is contacted with the trapezoidal block;
and one end of the threaded rod, which is far away from the trapezoidal block, is in threaded connection with the device shell.
Preferably, a modified asphalt pavement surface course construction technology, second discharge gate upper end is provided with pitch piece reducing mechanism, pitch piece reducing mechanism includes:
the device comprises an upper clamping block, a guide rail, a movable clamping block, a screw rod, a device main body, a fixed port, a first rotating shaft, an inner main body, a first driving gear, a second rotating shaft, a second driven gear, a main motor, a drill bit, a sorting plate, a sorting port, a second driving gear, a third rotating shaft, a first driven gear, a clamping plate and a spring;
the upper clamping block is fixedly arranged on the device shell, the lower end of the upper clamping block is fixedly provided with a device main body, a guide rail is fixedly arranged between the upper clamping block and the device main body, a movable clamping block capable of sliding up and down is arranged on the guide rail, and a screw rod is connected with the inner part of the movable clamping block in a threaded manner;
an inner main body is arranged in the device main body, a main motor is fixedly mounted at the lower end of the inner part of the inner main body, a third rotating shaft is fixedly mounted at the upper end of the main motor, a second driving gear is fixedly mounted on the third rotating shaft, and a first driving gear is fixedly mounted at the upper end of the second driving gear;
the first driving gear and the first driven gear can be meshed or staggered and not meshed, the first driven gear is fixedly arranged on a first rotating shaft, a fixed port is formed in the periphery of the upper end of the first rotating shaft, and the upper end of the first rotating shaft is fixedly connected with the lower end of the screw rod;
two clamping plates capable of moving in the first rotating shaft are symmetrically arranged in the upper end of the first rotating shaft, and the two clamping plates are connected through a spring;
a second driven gear is meshed with the second driving gear and fixedly mounted on a second rotating shaft, and a drill bit is fixedly mounted at the lower end of the second rotating shaft;
the device is characterized in that a sorting plate is fixedly mounted on one side of the lower end of the device main body, and a sorting opening is formed in the sorting plate.
Preferably, the construction process of the modified asphalt pavement surface layer further comprises the following steps:
the distance sensor is arranged at the bottom of the device shell and used for measuring the thickness of an asphalt layer of the pavement surface;
the counter is arranged at the bottom of the device shell and used for recording the number of the asphalt layers;
the controller, controller and distance sensor, counter and alarm electric connection control the alarm and report to the police, and the process includes following step:
the method comprises the following steps: the controller calculates the permanent deformation estimated value of the modified asphalt pavement after construction through the following formula:
wherein, Delta h is the permanent deformation estimated value m after the construction of the modified asphalt pavementiThe compaction degree of the ith layer of the modified asphalt pavement is shown, n is the number of asphalt layers recorded by a counter, hiThickness of i-th layer of asphalt layer of modified asphalt pavement measured by distance sensor (sigma)iThe maximum stress (J) borne by the i-th layer of the modified asphalt pavementvp)iThe creep compliance of the ith layer of the modified asphalt pavement; sigma is the tensile strength of the modified asphalt pavement; h is the average thickness of all layers of the modified asphalt pavement;
step two: and the controller compares the permanent deformation predicted value after the construction of the modified asphalt pavement with a preset deformation value, and controls the alarm to give an alarm when the permanent deformation predicted value after the construction of the modified asphalt pavement is greater than the preset deformation value.
Preferably, the construction process of the modified asphalt pavement surface course, the paver further comprises:
the force sensor is arranged at the lower end of the device shell and used for detecting the total gravity of the modified asphalt added into the paver;
the rotating speed sensor is arranged in the device shell and used for detecting the actual rotating speed of the rotating shaft during working;
the controller is electrically connected with the force sensor, the rotating speed sensor and the alarm;
the controller is based on force sensor, speed sensor, control alarm work, includes following step:
the method comprises the following steps: the controller calculates the comprehensive stress of the stirring rod according to the force sensor and the rotating speed sensor;
wherein, F1For comprehensive stress of the stirring rod, N is the total gravity of the modified asphalt added into the paver detected by the force sensor, d is the diameter of the rotating shaft, and d is the total gravity of the stirring rod1Is the length of the stirring rod, n is the actual rotating speed of the rotating shaft detected by the rotating speed sensor during working, n0The rated rotating speed of the motor is shown, and pi is the circumferential rate and takes a value of 3.14;
step two: the controller calculates an actual torsion angle when the stirring rod generates torsion deformation according to the comprehensive stress of the rotating speed sensor and the stirring rod;
wherein gamma is the actual torsion angle when the stirring rod generates torsion deformation, P is the rated power of the motor, F1D is the diameter of the rotating shaft for the comprehensive stress of the stirring rod1The length of the stirring rod is mu, the transmission efficiency of the motor is mu, G is the shearing elastic modulus of the material of the stirring rod, and n is the actual rotating speed of the rotating shaft detected by the rotating speed sensor during working; arctan stands for arctangent; pi is the circumference ratio, and the value is 3.14;
step three: the controller compares the actual torsion angle with a preset torsion angle, and when the actual torsion angle is larger than the preset torsion angle, the controller controls the alarm to give an alarm.
Compared with the prior art, the invention provides a modified asphalt pavement surface layer construction process, which has the following beneficial effects:
1. when the paver is used for constructing a pavement surface course, firstly, an end cover is opened, and the straight asphalt and the oxidized asphalt are mixed in a ratio of 8.5: 1.5, adding a modifier with the weight of the total weight percent of the straight-run asphalt and the oxidized asphalt into a shell of the device, starting a motor, driving a rotating shaft and a stirring rod to rotate by the motor, fully stirring the straight-run asphalt, the oxidized asphalt and the modifier, then pouring the stirred modified asphalt into a construction pavement through a second discharge port by a conveying device, and compacting the modified asphalt by a road roller mechanism to finish the construction of a pavement surface layer, so that the problems that the pavement is not embedded, extruded and compacted when being molded due to uneven stirring of the modified asphalt, the pavement flatness is not enough, and the pavement is cracked and broken due to long-term use are solved;
2. when the conveying device works, the motor drives the rotating shaft and the main transmission bevel gear to rotate, the main transmission bevel gear drives the crawler wheel to rotate so as to drive the crawler belt to rotate, and the modified asphalt on the crawler belt is conveyed, so that the functionality and the automation capacity of the conveying device are improved; when the road pressing mechanism is used, the hydraulic rod fixes the vertical position of the pressing wheel, then the road pressing motor works to drive the transmission belt to rotate so as to drive the transmission shaft to rotate, and the transmission shaft rotates to drive the pressing wheel to complete the compaction work of the modified asphalt; when the steering device works, the main rotating rod is rotated, the main rotating rod drives the connecting rod to rotate so as to control the direction of the steering wheel, so that the paver can rotate in the direction through the steering wheel, and the flexibility of the device is improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of the construction process of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of a steering apparatus according to the present invention;
FIG. 4 is a schematic structural view of an asphalt block pulverizing apparatus according to the present invention;
FIG. 5 is a schematic view of the installation of the asphalt block pulverizing apparatus according to the present invention;
FIG. 6 is a schematic structural view of a steering wheel fixing device according to the present invention;
FIG. 7 is a schematic view of the steering wheel securing apparatus of the present invention;
FIG. 8 is an enlarged view of the invention at A.
In the figure: 1. an end cap; 2. a device housing; 3. a stirring rod; 4. a rotating shaft; 5. a motor; 6. a transportation device; 601. a crawler belt; 602. a main drive bevel gear; 603. a rotating shaft; 604. a crawler wheel; 7. a hydraulic lever; 8. an asphalt block crushing device; 801. an upper clamping block; 802. a guide rail; 803. a movable clamping block; 804. a screw; 805. a device main body; 806. a fixed port; 807. a first rotating shaft; 808. an inner body; 809. a first drive gear; 810. a second rotating shaft; 811. a second driven gear; 812. a main motor; 813. a drill bit; 814. sorting plates; 815. a sorting port; 816. a second driving gear; 817. a third rotating shaft; 818. a first driven gear; 819. clamping a plate; 820. a spring; 9. a road rolling mechanism; 901. a pinch roller; 902. a road roller motor; 903. a transmission belt; 904. a drive shaft; 10. a second discharge port; 11. a steering device; 1101. a main rotating rod; 1102. a steering wheel; 1103. a connecting rod; 1104. a steering device housing; 12. a steering wheel fixing device; 1201. a fixing plate; 1202. a clamping bar; 1203. fixing the rod; 1204. a pulley; 1205. a loop bar; 1206. a loop bar spring; 1207. an internally threaded plate; 1208. a trapezoidal block; 1209. a threaded rod; 1210. connecting the rotating shaft; 13. a first discharge port.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Example 1
Referring to fig. 1 and 2, the present invention provides a technical solution:
the utility model provides a modified asphalt pavement surface course construction process, includes and is under construction the pavement surface course through the paver, it includes following step to be under construction the pavement surface course through the paver:
s1, placing the modified asphalt in a stirring device of a paver for stirring;
s2, conveying the stirred modified asphalt to a second discharge port 10 of the paver through a conveying device 6 of the paver and placing the modified asphalt on a construction pavement surface layer;
s3, compacting the modified asphalt by using the paver pressing mechanism 9;
s4, repeating the operations until the thickness of the modified asphalt layer reaches the preset thickness of the process requirement, and completing construction of the pavement layer;
preferably, the modified asphalt material component comprises: straight-run asphalt, oxidized asphalt and a modifier;
preferably, the paver comprises: device shell 2, 2 upper ends of device shell are provided with end cover 1, 1 lower extreme of end cover is provided with pivot 4, the left and right sides of pivot 4 rotates and installs inside device shell 2, agitating unit includes: a plurality of stirring rods 3 are arranged on the periphery of the rotating shaft 4;
a motor 5 is arranged outside one end of the device shell 2, and the motor 5 is fixedly connected with one end of a rotating shaft 4;
the lower end of the device shell 2 is provided with a first discharge hole 13 which can be opened and closed, materials fall to the transportation device 6 after passing through the first discharge hole 13, a baffle plate is arranged at the first discharge hole 13 and used for closing or opening the first discharge hole through movement, and the baffle plate is controlled to move by a telescopic rod;
a conveying device 6 is arranged below the first discharge hole 13, and a second discharge hole 10 is arranged at one end of the conveying device 6;
the lower end of the conveying device 6 is provided with a plurality of hydraulic rods 7, and the lower ends of the hydraulic rods 7 are provided with road rolling mechanisms 9.
The beneficial effects of the above technical scheme are: when the paver is used for constructing a pavement layer, firstly, the end cover 1 is opened, and the straight asphalt and the oxidized asphalt are mixed in a ratio of 8.5: pouring the asphalt into a device shell 2 according to the proportion of 1.5, adding a modifier with the weight being 5% of the total weight of the straight-run asphalt and the oxidized asphalt, then starting a motor 5, driving a rotating shaft 4 and a stirring rod 3 to rotate by the motor 5, fully stirring the straight-run asphalt, the oxidized asphalt and the modifier, and referring to patent CN104559265A, then pouring the stirred modified asphalt into a construction pavement through a second discharge port 10 by a transportation device 6, compacting the modified asphalt through a road roller mechanism 9, completing construction of a pavement surface layer, and solving the technical problem that the process quality is easy to generate in one-step molding of asphalt pavement construction by changing the asphalt used for construction into the modified asphalt and compacting the modified asphalt for multiple times by using a paver.
Example 2
Referring to fig. 2, based on embodiment 1, the present invention provides a technical solution:
the transport device 6 comprises:
track 601, main drive bevel gear 602, rotating shaft 603, track wheel 604;
two crawler wheels 604 are symmetrically arranged below the rotating shaft 4, and a crawler belt 601 is arranged on the two crawler wheels 604;
a main transmission bevel gear 602 is engaged and connected to the crawler wheel 604 close to the motor 5, the main transmission bevel gear 602 is fixedly mounted on a rotating shaft 603, and one end of the rotating shaft 603 is fixedly connected to the motor 5.
The beneficial effects of the above technical scheme are: when the transportation device 6 works, the motor 5 drives the rotating shaft 603 and the main transmission bevel gear 602 to rotate, the main transmission bevel gear 602 drives the crawler wheel 604 to rotate so as to drive the crawler 601 to rotate, and the modified asphalt on the crawler 601 is transported, so that the functionality of the device is improved, and the automation capacity of the device is improved.
Example 3
Referring to fig. 2, based on embodiments 1 and 2, the present invention provides a technical solution:
be provided with in 7 lower extreme device casings 2 of hydraulic stem and press road mechanism 9, press road mechanism 9 to include:
a pressing wheel 901, a road roller motor 902, a transmission belt 903 and a transmission shaft 904;
the lower end of the hydraulic rod 7 is rotatably provided with a transmission shaft 904 which can penetrate through the transmission shaft 904 or is arranged at one side of the transmission shaft 904, and the periphery of the transmission shaft 904 is sleeved with a pressing wheel 901;
a road roller motor 902 is fixedly arranged in the housing 2 of the lower end device of the hydraulic rod 7, and the road roller motor 902 is connected with a transmission shaft 904 through a transmission belt 903.
The beneficial effects of the above technical scheme are: when the road pressing mechanism 9 is used, the hydraulic rod 7 fixes the vertical position of the pressing wheel 901, then the road pressing motor 902 works to drive the transmission belt 903 to rotate, so as to drive the transmission shaft 904 to rotate, and the transmission shaft 904 rotates to drive the pressing wheel 901, so that the modified asphalt is compacted.
Example 4
Referring to fig. 2 and fig. 3, based on the embodiment 1, the present invention provides a technical solution:
the construction process of the modified asphalt pavement surface layer is characterized in that a steering device 11 is arranged on one side, away from a motor 5, of the outside of a device shell 2, and the steering device 11 comprises:
a main lever 1101, a steering wheel 1102, a connecting rod 1103, a steering device housing 1104;
turn to device casing 1104 fixed mounting in the outside of device shell 2, turn to the inside main bull stick 1101 that installs of device casing 1104, the fixed connecting rod 1103 that has cup jointed in main bull stick 1101 lower extreme, the directive wheel 1102 is installed in the rotation of connecting rod 1103 both ends, connecting rod 1103 and directive wheel 1102 all set up in device casing 1104 outside, device shell 2 sets up the rotatory opening of confession directive wheel 1102.
The beneficial effects of the above technical scheme are: when the steering device 11 works, the main rotating rod 1101 is rotated, the main rotating rod 1101 drives the connecting rod 1103 to rotate so as to control the direction of the steering wheel 1102, so that the paver can rotate in the direction through the steering wheel 1102, and the flexibility of the device is improved.
Example 5
Referring to fig. 6 and 7, in the construction process of the modified asphalt pavement surface layer according to embodiment 4, a steering wheel fixing device 12 is disposed inside a steering device housing 1104, and the steering wheel fixing device 12 includes:
the fixing plate 1201, the clamping rod 1202, the fixing rod 1203, the pulley 1204, the loop bar 1205, the loop bar spring 1206, the internal thread plate 1207, the trapezoidal block 1208, the threaded rod 1209 and the connecting rotating shaft 1210;
the inner thread plate 1207 is arranged inside the steering device shell 1104 and is in contact with the device shell 2, inner threads are arranged inside the inner thread plate 1207, the threaded rod 1209 is in threaded connection with the inner threads arranged inside the inner thread plate 1207, and a trapezoidal block 1208 is fixedly arranged at one end, far away from the inner thread plate 1207, of the threaded rod 1209;
one end, far away from the device shell 2, of the inner thread plate 1207 is symmetrically sleeved with one end of a sleeve rod 1205, the other end of the sleeve rod 1205 is fixedly connected with one end of a fixing rod 1203, the other end of the fixing rod 1203 is fixedly provided with a connecting rotating shaft 1210, the connecting rotating shaft 1210 is rotatably provided with clamping rods 1202, and one sides, close to each other, of the two symmetrically arranged clamping rods 1202 are fixedly provided with fixing plates 1201;
a pulley 1204 is rotatably arranged on one end of the clamping rod 1202 far away from the fixing plate 1201, and the pulley 1204 is contacted with a trapezoidal block 1208;
the end of the threaded rod 1209 remote from the trapezoidal block 1208 is screwed onto the device housing 2.
The beneficial effects of the above technical scheme are: when the steering wheel fixing device 12 works, the positions of the fixing plates 1201 are adjusted through the loop bar springs 1206 and the loop bars 1205 to enable the fixing plates 1201 to be fixed on two sides of the steering wheel 1102, then the threaded rods 1209 are rotated, the pulleys 1204 slide on the trapezoidal blocks 1208 to enable the fixing plates 1201 to approach each other, the steering wheel 1102 between the two fixing plates 1201 cannot rotate, the steering wheel 1102 is enabled to keep a vertical advancing state, the phenomenon that the movement route of the paver is bent due to rotation of the steering wheel 1102 is prevented, the construction road surface is enabled to be uneven, and the process quality of the modified asphalt pavement surface layer construction process is improved.
Example 6
Referring to fig. 4 and 5, based on the embodiment 1, the present invention provides a technical solution:
a modified asphalt pavement surface course construction technology, second discharge gate 10 upper end is provided with pitch piece reducing mechanism 8, pitch piece reducing mechanism 8 includes:
an upper fixture block 801, a guide rail 802, a movable fixture block 803, a screw 804, a device main body 805, a fixed port 806, a first rotating shaft 807, an inner main body 808, a first driving gear 809, a second rotating shaft 810, a second driven gear 811, a main motor 812, a drill 813, a sorting plate 814, a sorting port 815, a second driving gear 816, a third rotating shaft 817, a first driven gear 818, a clamping plate 819 and a spring 820;
the upper fixture block 801 is fixedly installed on the device housing 2, a device main body 805 is fixedly installed at the lower end of the upper fixture block 801, a guide rail 802 is fixedly installed between the upper fixture block 801 and the device main body 805, a movable fixture block 803 capable of sliding up and down is installed on the guide rail 802, and a screw 804 is in threaded connection with the interior of the movable fixture block 803;
an inner main body 808 is arranged in the device main body 805, a main motor 812 is fixedly mounted at the lower end in the inner main body 808, a third rotating shaft 817 is fixedly mounted at the upper end of the main motor 812, a second driving gear 816 is fixedly mounted on the third rotating shaft 817, and a first driving gear 809 is fixedly mounted at the upper end of the second driving gear 816;
the first driving gear 809 and the first driven gear 818 can be engaged or disengaged in a staggered manner (specifically, the method can be adopted, wherein a third rotating shaft is provided with a telescopic rod, and the position of the first driving gear 809 can be adjusted by stretching and retracting through the third rotating shaft), or the first driven gear 818 is internally and fixedly provided with an inner key sleeve, the inner key sleeve slides on the first rotating shaft 807, an outer key matched with the inner key sleeve is arranged on the first rotating shaft 807, an electromagnet is arranged on the inner key sleeve, a limit fixing block is arranged on the first rotating shaft 807 and used for limiting the movement of the inner key sleeve, a permanent magnet is arranged on the limit fixing block, the position of the inner key sleeve and the position of the first driven gear are adjusted by matching of the permanent magnet and the electromagnet, so that the first driving gear 809 is engaged or disengaged in a staggered manner with the first driven gear 818, the first driven gear 818 is fixedly arranged on the first rotating shaft 807, and a fixing port 806 is arranged on the periphery of the upper end of the first rotating shaft 807, the upper end of the first rotating shaft 807 is fixedly connected with the lower end of the screw 804;
two clamping plates 819 which can move in the first rotating shaft 807 are symmetrically arranged in the upper end of the first rotating shaft 807, and the two clamping plates 819 are connected through a spring 820;
a second driven gear 811 is engaged with the second driving gear 816, the second driven gear 811 is fixedly mounted on a second rotating shaft 810, and a drill 813 is fixedly mounted at the lower end of the second rotating shaft 810;
a sorting plate 814 is fixedly mounted on one side of the lower end of the device main body 805, and a sorting opening 815 is formed in the sorting plate 814.
The working principle and the beneficial effects of the technical scheme are as follows: when the asphalt block crushing device 8 is used, the main motor 812 is started, the main motor 812 works to drive the third rotating shaft 817 to rotate, and the third rotating shaft 817 drives the first driving gear 809 and the second driving gear 816 to rotate;
the first driving gear 809 rotates to drive the first driven gear 818 to rotate, so as to drive the first rotating shaft 807 and the screw 804 to rotate, the screw 804 rotates and simultaneously enables the movable fixture block 803 to move upwards, and after the device shell 2 is clamped by the upper fixture block 801 and the movable fixture block 803, the clamping plate 819 is popped up by the force of the spring 820, so that the position of the screw 804 is fixed, the asphalt block crushing device 8 is stably installed, and the asphalt block crushing device can be kept stable and reduce vibration in the working process;
Example 7
On the basis of any one of embodiments 1 to 6, referring to fig. 2, the present invention provides a technical solution:
the construction process of the modified asphalt pavement surface layer further comprises the following steps:
the distance sensor is arranged at the bottom of the device shell 2 and used for measuring the thickness of an asphalt layer of the pavement surface;
a counter provided at the bottom of the device case 2 for recording the number of asphalt layer layers as one layer without completing the steps S2 and S3 once;
the controller, controller and distance sensor, counter and alarm electric connection control the alarm and report to the police, and the process includes following step:
the method comprises the following steps: the controller calculates the permanent deformation estimated value of the modified asphalt pavement after construction through the following formula:
wherein, Delta h is the permanent deformation estimated value m after the construction of the modified asphalt pavementiThe compaction degree of the ith layer of the modified asphalt pavement is shown, n is the number of asphalt layers recorded by a counter, hiThickness of i-th layer of asphalt layer of modified asphalt pavement measured by distance sensor (sigma)iThe maximum stress (J) borne by the i-th layer of the modified asphalt pavementvp)iThe creep compliance of the ith layer of the modified asphalt pavement (the creep compliance is the theoretical maximum deformation of the modified asphalt pavement compared with the theoretical maximum stress borne by the modified asphalt pavement); sigma is the tensile strength of the modified asphalt pavement; h is the average thickness of all layers of the modified asphalt pavement;
step two: and the controller compares the permanent deformation predicted value after the construction of the modified asphalt pavement with a preset deformation value, and controls the alarm to give an alarm when the permanent deformation predicted value after the construction of the modified asphalt pavement is greater than the preset deformation value.
The working principle and the beneficial effects of the technical scheme are as follows: after the controller calculates a permanent deformation estimated value after the construction of the modified asphalt pavement through the following formula (wherein comprehensive consideration is given to the compaction degree of the ith layer of the modified asphalt pavement, the number of asphalt layers recorded by a counter, the thickness of the ith layer of the asphalt layer of the modified asphalt pavement measured by a distance sensor, the maximum stress borne by the ith layer of the modified asphalt pavement, the creep compliance of the ith layer of the modified asphalt pavement and the average thickness of all the layers of the modified asphalt pavement), the controller compares the permanent deformation estimated value after the construction of the modified asphalt pavement with a preset deformation value, and when the permanent deformation estimated value after the construction of the modified asphalt pavement is greater than the preset deformation value, the controller controls an alarm to give an alarm;
the strength of the constructed pavement is prevented from being reduced due to operation reasons or substandard use materials after the construction of the modified asphalt pavement, the condition that the pavement is deformed too much due to long-time use of the pavement is avoided, and the functionality and the pavement quality of the device are improved.
Example 8
On the basis of any one of embodiments 1 to 7, referring to fig. 2, the present invention provides a technical solution:
the construction process of the modified asphalt pavement surface course comprises the following steps:
the force sensor is arranged at the lower end of the device shell and used for detecting the total gravity of the modified asphalt added into the paver;
the rotating speed sensor is arranged in the device shell 2 and is used for detecting the actual rotating speed of the rotating shaft 4 during working;
the controller is electrically connected with the force sensor, the rotating speed sensor and the alarm;
the controller is based on force sensor, speed sensor, control alarm work, includes following step:
the method comprises the following steps: the controller calculates the comprehensive stress of the stirring rod 3 according to the force sensor and the rotating speed sensor;
wherein, F1For the comprehensive stress of the stirring rod 3, N is the total weight of the modified asphalt added into the paver detected by the force sensor, d is the diameter of the rotating shaft 4, and d is the total weight of the modified asphalt1Is the length of the stirring rod 3, n is the actual rotating speed of the rotating shaft 4 during operation detected by the rotating speed sensor, and n is0The rated rotating speed of the motor 5 is shown, and pi is the circumferential rate and takes a value of 3.14;
step two: the controller calculates an actual torsion angle when the stirring rod 3 generates torsional deformation according to the comprehensive stress of the rotating speed sensor and the stirring rod 3;
wherein gamma is the actual torsion angle when the stirring rod 3 generates torsion deformation, P is the rated power of the motor 5, F1D is the diameter of the rotating shaft 4 for the comprehensive stress of the stirring rod 31The length of the stirring rod 3, mu is the transmission efficiency of the motor 5, G is the shearing elastic modulus of the material of the stirring rod 3, and n is the working state of the rotating shaft 4 detected by the rotating speed sensorActual rotational speed; arctan stands for arctangent; pi is the circumference ratio, and the value is 3.14;
step three: the controller compares the actual torsion angle with a preset torsion angle, and when the actual torsion angle is larger than the preset torsion angle, the controller controls the alarm to give an alarm.
The working principle and the beneficial effects are as follows: the controller basis the force sensor, speed sensor calculate puddler 3's comprehensive atress (wherein synthesize and consider, the modified asphalt total weight that adds in the paver that force sensor detected, the diameter of pivot 4, the length of puddler 3, the actual rotational speed of the pivot 4 during operation that speed sensor detected, the rated revolution of motor 5) later the controller basis the comprehensive atress of puddler 3 calculates the actual torsion angle (wherein synthesize and consider, the rated power of motor 5, the comprehensive atress of puddler 3, d is the diameter of pivot 4, d when the puddler 3 produces torsional deformation1The length of the stirring rod 3, mu is the transmission efficiency of the motor 5, the shearing elastic modulus of the material of the stirring rod 3, and the actual rotating speed of the rotating shaft 4 detected by the rotating speed sensor during working) and finally comparing the actual torsion angle with the preset torsion angle by the controller, and when the actual torsion angle is larger than the preset torsion angle, controlling an alarm to give an alarm by the controller to complete the stress safety detection of the stirring rod 3;
prevented that puddler 3 its external force that bears when stirring modified asphalt is too big, and then too big to the load that puddler 3 produced, produce great deformation or buckle to it, and then lead to the unable intensive mixing of modified asphalt or lead to paver inner structure to suffer destruction, makeed a modified asphalt pavement surface course construction technology's technology quality receives the influence, modified asphalt construction road surface takes place to destroy.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a modified asphalt pavement surface course construction process, its characterized in that includes and is under construction the pavement surface course through the paver, it includes following steps to construct the pavement surface course through the paver:
s1, placing the modified asphalt in a stirring device of a paver for stirring;
s2, transporting the stirred modified asphalt to a second discharge port (10) of the paver through a transportation device (6) of the paver and placing the modified asphalt on a construction pavement surface layer;
s3, compacting the modified asphalt by using a paver pressing mechanism (9);
and S4, repeating the operations until the thickness of the modified asphalt layer reaches the preset thickness of the process requirement, and finishing the construction of the pavement layer.
2. The process of claim 1, wherein the modified asphalt material comprises the following components: straight-run asphalt, oxidized asphalt and a modifier.
3. The process for constructing a modified asphalt pavement surface according to claim 1,
the paver includes: device shell (2), device shell (2) upper end is provided with end cover (1), end cover (1) lower extreme is provided with pivot (4), the left and right sides of pivot (4) is rotated and is installed inside device shell (2), agitating unit includes: a plurality of stirring rods (3) are arranged on the periphery of the rotating shaft (4);
a motor (5) is arranged outside one end of the device shell (2), and the motor (5) is fixedly connected with one end of the rotating shaft (4);
the lower end of the device shell (2) is provided with a first discharge hole (13) which can be opened and closed, and the materials fall to the conveying device (6) after passing through the first discharge hole;
a conveying device (6) is arranged below the first discharge hole (13), and a second discharge hole (10) is arranged at one end of the conveying device (6);
the lower end of the conveying device (6) is provided with a plurality of hydraulic rods (7), and the lower end of each hydraulic rod (7) is provided with a road rolling mechanism (9).
4. The process for the construction of a modified bituminous pavement surface according to claim 3, characterized in that said transport means (6) comprise:
a track (601), a main drive bevel gear (602), a rotating shaft (603), and a track wheel (604);
two crawler wheels (604) are symmetrically arranged below the rotating shaft (4), and a crawler belt (601) is arranged on the two crawler wheels (604);
one side of the crawler wheel (604) close to the motor (5) is provided with an auxiliary transmission bevel gear, the auxiliary transmission bevel gear is connected with a main transmission bevel gear (602) in a meshed mode, the main transmission bevel gear (602) is fixedly installed on a rotating shaft (603), and one end of the rotating shaft (603) is fixedly connected with the motor (5).
5. The process for constructing the modified asphalt pavement surface layer according to claim 3, wherein a road rolling mechanism (9) is arranged in the housing (2) at the lower end of the hydraulic rod (7), and the road rolling mechanism (9) comprises:
the device comprises a pressing wheel (901), a road roller motor (902), a transmission belt (903) and a transmission shaft (904);
the lower end of the hydraulic rod (7) is rotatably provided with a transmission shaft (904), and a pinch roller (901) is sleeved on the periphery of the transmission shaft (904);
and a road pressing motor (902) is fixedly installed in the housing (2) of the lower end device of the hydraulic rod (7), and the road pressing motor (902) is connected with the transmission shaft (904) through a transmission belt (903).
6. The process for constructing a modified asphalt pavement surface according to claim 3, wherein a steering device (11) is arranged on the side of the outside of the device shell (2) far away from the motor (5), and the steering device (11) comprises:
a main rotating rod (1101), a steering wheel (1102), a connecting rod (1103), and a steering device housing (1104);
turn to device casing (1104) fixed mounting in the outside of device shell (2), turn to device casing (1104) internal rotation and install main bull stick (1101), the fixed connecting rod (1103) that has cup jointed in main bull stick (1101) lower extreme, connecting rod (1103) both ends are rotated and are installed directive wheel (1102), connecting rod (1103) and directive wheel (1102) all set up in device casing (1104) outside, device shell (2) set up the rotatory opening of confession directive wheel (1102).
7. The process for constructing a modified asphalt pavement surface according to claim 6, wherein a steering wheel fixing device (12) is arranged inside the steering device housing (1104), and the steering wheel fixing device (12) comprises:
the device comprises a fixing plate (1201), a clamping rod (1202), a fixing rod (1203), a pulley (1204), a loop bar (1205), a loop bar spring (1206), an internal thread plate (1207), a trapezoidal block (1208), a threaded rod (1209) and a connecting rotating shaft (1210);
the inner thread plate (1207) is arranged in the steering device shell (1104) and is in contact with the device shell (2), internal threads are arranged in the inner thread plate (1207), the threaded rod (1209) is in threaded connection with the internal threads arranged in the inner thread plate (1207), and a trapezoidal block (1208) is fixedly installed at one end, far away from the inner thread plate (1207), of the threaded rod (1209);
one end, far away from the device shell (2), of the inner thread plate (1207) is symmetrically sleeved with one end of a sleeve rod (1205), the other end of the sleeve rod (1205) is fixedly connected with one end of a fixing rod (1203), the other end of the fixing rod (1203) is fixedly provided with a connecting rotating shaft (1210), the connecting rotating shaft (1210) is rotatably provided with clamping rods (1202), and one sides, close to each other, of the two symmetrically arranged clamping rods (1202) are fixedly provided with fixing plates (1201);
a pulley (1204) is rotatably mounted on one end of the clamping rod (1202) far away from the fixing plate (1201), and the pulley (1204) is in contact with the trapezoidal block (1208);
one end of the threaded rod (1209) far away from the trapezoidal block (1208) is in threaded connection with the device shell (2).
8. The construction process of the modified asphalt pavement surface layer according to claim 3, wherein an asphalt block crushing device (8) is arranged at the upper end of the second discharge port (10), and the asphalt block crushing device (8) comprises:
the device comprises an upper clamping block (801), a guide rail (802), a movable clamping block (803), a screw (804), a device main body (805), a fixed port (806), a first rotating shaft (807), an inner main body (808), a first driving gear (809), a second rotating shaft (810), a second driven gear (811), a main motor (812), a drill bit (813), a sorting plate (814), a sorting port (815), a second driving gear (816), a third rotating shaft (817), a first driven gear (818), a clamping plate (819) and a spring (820);
the upper clamping block (801) is fixedly installed on the device shell (2), the lower end of the upper clamping block (801) is fixedly installed with a device main body (805), a guide rail (802) is fixedly installed between the upper clamping block (801) and the device main body (805), a movable clamping block (803) capable of sliding up and down is installed on the guide rail (802), and a screw rod (804) is in threaded connection with the interior of the movable clamping block (803);
an inner main body (808) is arranged in the device main body (805), a main motor (812) is fixedly mounted at the lower end in the inner main body (808), a third rotating shaft (817) is fixedly mounted at the upper end of the main motor (812), a second driving gear (816) is fixedly mounted on the third rotating shaft (817), and a first driving gear (809) is fixedly mounted at the upper end of the second driving gear (816);
the first driving gear (809) and the first driven gear (818) can be meshed or staggered and are not meshed, the first driven gear (818) is fixedly installed on a first rotating shaft (807), a fixed port (806) is formed in the peripheral side of the upper end of the first rotating shaft (807), and the upper end of the first rotating shaft (807) is fixedly connected with the lower end of the screw rod (804);
two clamping plates (819) capable of moving inside the first rotating shaft (807) are symmetrically arranged inside the upper end of the first rotating shaft (807), and the two clamping plates (819) are connected through a spring (820);
a second driven gear (811) is meshed with the second driving gear (816), the second driven gear (811) is fixedly mounted on a second rotating shaft (810), and a drill bit (813) is fixedly mounted at the lower end of the second rotating shaft (810);
the device is characterized in that a sorting plate (814) is fixedly mounted on one side of the lower end of the device main body (805), and a sorting opening (815) is formed in the sorting plate (814).
9. The construction process of the modified asphalt pavement surface layer according to claim 3, further comprising:
the distance sensor is arranged at the bottom of the device shell (2) and used for measuring the thickness of an asphalt layer of the pavement surface;
the counter is arranged at the bottom of the device shell (2) and is used for recording the number of the asphalt layers;
the controller, controller and distance sensor, counter and alarm electric connection control the alarm and report to the police, and the process includes following step:
the method comprises the following steps: the controller calculates the permanent deformation estimated value of the modified asphalt pavement after construction through the following formula:
wherein, Delta h is the permanent deformation estimated value m after the construction of the modified asphalt pavementiThe compaction degree of the ith layer of the modified asphalt pavement is shown, n is the number of asphalt layers recorded by a counter, hiThickness of i-th layer of asphalt layer of modified asphalt pavement measured by distance sensor (sigma)iThe maximum stress (J) borne by the i-th layer of the modified asphalt pavementvp)iThe creep compliance of the ith layer of the modified asphalt pavement; sigma is the tensile strength of the modified asphalt pavement; h is the average thickness of all layers of the modified asphalt pavement;
step two: and the controller compares the permanent deformation predicted value after the construction of the modified asphalt pavement with a preset deformation value, and controls the alarm to give an alarm when the permanent deformation predicted value after the construction of the modified asphalt pavement is greater than the preset deformation value.
10. The process of claim 3, wherein the paver further comprises:
the force sensor is arranged at the lower end of the device shell and used for detecting the total gravity of the modified asphalt added into the paver;
the rotating speed sensor is arranged in the device shell (2) and is used for detecting the actual rotating speed of the rotating shaft (4) during working;
the controller is electrically connected with the force sensor, the rotating speed sensor and the alarm;
the controller is based on force sensor, speed sensor, control alarm work, includes following step:
the method comprises the following steps: the controller calculates the comprehensive stress of the stirring rod (3) according to the force sensor and the rotating speed sensor;
wherein, F1The total gravity of the modified asphalt added into the paver is detected by the force sensor for the comprehensive stress of the stirring rod (3), d is the diameter of the rotating shaft (4), d1Is the length of the stirring rod (3), n is the actual rotating speed of the rotating shaft (4) detected by the rotating speed sensor when in work, n0The rated rotating speed of the motor (5) is shown, and pi is the circumferential rate and takes a value of 3.14;
step two: the controller calculates an actual torsion angle when the stirring rod (3) generates torsional deformation according to the comprehensive stress of the rotating speed sensor and the stirring rod (3);
wherein gamma is the actual torsion angle when the stirring rod (3) generates torsion deformation, P is the rated power of the motor (5), F1Is the comprehensive stress of the stirring rod (3), d is the diameter of the rotating shaft (4), d1The length of the stirring rod (3), mu is the transmission efficiency of the motor (5), G is the shearing elastic modulus of the material of the stirring rod (3), and n is the actual rotating speed of the rotating shaft (4) detected by the rotating speed sensor during working; arctan stands for arctangent; pi is the circumference ratio, and the value is 3.14;
step three: the controller compares the actual torsion angle with a preset torsion angle, and when the actual torsion angle is larger than the preset torsion angle, the controller controls the alarm to give an alarm.
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| CN202110837491.5A CN113502709A (en) | 2021-07-23 | 2021-07-23 | Construction process of modified asphalt pavement surface layer |
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| CN202110837491.5A CN113502709A (en) | 2021-07-23 | 2021-07-23 | Construction process of modified asphalt pavement surface layer |
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| CN110578284A (en) * | 2018-06-07 | 2019-12-17 | 重庆工程职业技术学院 | Rearmounted hammering device of road bridge construction asphalt paving machine |
| CN112064441A (en) * | 2020-09-21 | 2020-12-11 | 重庆建工第一市政工程有限责任公司 | Construction method of high-viscosity modified asphalt pavement |
| CN213045635U (en) * | 2020-08-17 | 2021-04-27 | 瑞锦鞋业集团有限公司 | Multipurpose shoe detection device with anti-slip detection function |
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| US4594022A (en) * | 1984-05-23 | 1986-06-10 | Mp Materials Corporation | Paving method and pavement construction for concentrating microwave heating within pavement material |
| CN207904721U (en) * | 2018-01-07 | 2018-09-25 | 李岩涛 | A kind of construction of the highway paver |
| CN108385466A (en) * | 2018-03-08 | 2018-08-10 | 中交公局桥隧工程有限公司 | Modified Bitumen Pavement surface construction technology |
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