CN113564993B - High-modulus asphalt pavement construction device and method based on heavy-duty traffic - Google Patents
High-modulus asphalt pavement construction device and method based on heavy-duty traffic Download PDFInfo
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- CN113564993B CN113564993B CN202111013482.0A CN202111013482A CN113564993B CN 113564993 B CN113564993 B CN 113564993B CN 202111013482 A CN202111013482 A CN 202111013482A CN 113564993 B CN113564993 B CN 113564993B
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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
- E01C19/4806—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 with solely rollers for consolidating or finishing
- E01C19/4826—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 with solely rollers for consolidating or finishing the materials being aggregate mixed with 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
-
- 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
- E01C19/22—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 consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/236—Construction of the rolling elements, e.g. surface configuration, rolling surface formed by endless track
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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 relates to a high-modulus asphalt pavement construction device and method based on heavy-duty traffic, which effectively solve the problem that the temperature in an asphalt mixture can not be measured efficiently and accurately during rolling aiming at the high-modulus asphalt pavement construction; the technical scheme comprises the following steps: through the bituminous mixture who accomplishes the back that paves at the road roller rolls the in-process, utilize the walking of the steel wheel of road roller and then drive temperature measuring device to realize that synchronous automation and interval fixed frequency measure the bituminous mixture temperature, in the measurement process, still can make temperature measuring device pull out after dwelling the certain time in the bituminous mixture moreover for measuring result is more accurate, reliable.
Description
Technical Field
The invention belongs to the technical field of pavement construction, and particularly relates to a high-modulus asphalt pavement construction device and method based on heavy-load traffic.
Background
At present, high modulus asphalt mixture is mainly characterized in that a high modulus agent is added in the process of mixing the mixture to achieve the effect of improving the modulus of the asphalt mixture, the fatigue resistance and the impact resistance of a road surface can be improved, the deformation quantity of the road surface under the heavy pressure of vehicles is reduced, and further, the damage to the asphalt road surface is reduced, so that the overall strength performance of the road surface is improved, therefore, the high modulus asphalt mixture is adopted to pave the road surface in a busy road section with more vehicles to deal with the condition of heavy traffic task load, and further, the service life of the road is prolonged;
the construction of the high-modulus asphalt mixture covers the working procedures of mixing, transporting, paving, rolling and the like of the asphalt mixture, wherein the temperature is a key factor for obtaining compactness of the asphalt concrete pavement and further playing a role in excellent performance of the asphalt concrete pavement, and particularly when the asphalt mixture finishes paving and starts to compact, the temperature of the asphalt mixture is directly related to the construction quality of the whole asphalt pavement;
in the prior art, the temperature condition of the asphalt mixture in the rolling process is comprehensively judged mainly by observing the color, the compaction and the caking of the asphalt mixture and the coating uniformity of the asphalt mixture through artificial naked eyes in the rolling process of the asphalt mixture, but the judgment mode often causes inaccurate results, so that constructors cannot clearly master the real temperature of the asphalt mixture in the rolling process;
or the temperature of the asphalt mixture in the rolling process can be measured by constructors through plug-in metal detection, although the temperature of the asphalt mixture in the rolling process can be accurately measured, the measurement position and the measurement frequency cannot be guaranteed due to manual measurement, and the temperature measurement work which requires the construction specification to be strictly executed cannot be installed;
because the temperature of the asphalt mixture which is just paved is very high (more than one hundred degrees), a manual and manual insertion type measurement mode is adopted, so that constructors are roasted at high temperature, gas generated by volatilization of the asphalt mixture has great damage to human bodies, and the constructors are easy to feel uncomfortable after being in the environment for a long time;
in view of the above, the present scheme provides a high modulus asphalt pavement construction device and method based on heavy traffic, which are used for solving the above problems.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a high-modulus asphalt pavement construction device and method based on heavy-duty traffic.
A high modulus asphalt pavement construction method based on heavy-duty traffic is characterized by comprising the following steps:
s1: dry-mixing the coarse aggregate, the fine aggregate, the filler and the high modulus agent in corresponding amount and proportion according to the design technical requirements, keeping the dry-mixing temperature at 175-185 ℃ and keeping the dry-mixing time at 10-15 s;
s2: adding liquid asphalt into the dry-mixed mineral aggregate and stirring for 45-53s within the range of 165-175 ℃;
s3: spreading at 155-160 deg.c with spreading machine;
s4: the paving machine is followed by the road roller for rolling and the temperature in the asphalt mixture is ensured to be not lower than 150 degrees during rolling.
Preferably, the rolling temperature of the asphalt mixture in S3 is measured by using an insertion thermometer with a metal probe.
A device for a construction method of a high-modulus asphalt pavement for heavy-duty traffic comprises a rolling roller and the rolling roller is driven by a road roller, and is characterized in that a semicircular plate is detachably arranged on one transverse side of the rolling roller, a measuring frame elastically connected with the semicircular plate is arranged on the semicircular plate in a sliding mode along the radial direction of the semicircular plate, a temperature measuring device is arranged on the measuring frame, a driving plate elastically connected with the semicircular plate is arranged on the semicircular plate in a sliding mode along the radial direction of the semicircular plate, the driving plate drives a driven plate installed in a sliding mode along the radial direction of the semicircular plate, the driven plate is matched with an intermediate plate installed in a sliding mode along the radial direction of the semicircular plate, and the driven plate is elastically connected with the intermediate plate;
be equipped with on the semicircle board with intermediate lamella complex positioner, the initiative board is connected with positioner through drive mechanism, and initiative board, driven plate, intermediate lamella cooperate and satisfy: after the driving plate releases the positioning of the middle plate by the positioning device through the transmission mechanism, the driven plate can drive the measuring frame to rapidly move along the radial direction of the semicircular plate and towards the road surface through the middle plate.
The beneficial effects of the technical scheme are as follows:
(1) in the process of rolling the paved asphalt mixture by the road roller, the temperature measuring device is driven by the walking of a steel wheel of the road roller to realize the synchronous automatic and interval fixed frequency measurement of the temperature of the asphalt mixture, and in the measuring process, the temperature measuring device can be pulled out after staying in the asphalt mixture for a certain time, so that the measuring result is more accurate and reliable;
(2) in the whole measuring process, the periodic temperature measurement of the asphalt mixture is realized along with the work of the road roller without manual participation, so that the workload of constructors is reduced, the workers are prevented from being roasted by high temperature of the asphalt mixture and smoked by pungent smell, and the working comfort and the enthusiasm of the constructors are further improved;
(3) in this scheme, still can carry out periodic clearance to the probe pin that inserts in the bituminous mixture, promptly, accomplish once measurement work after, all can realize clearing up the surface of probe pin to the great bituminous mixture of viscosity is attached to the probe pin surface, and then influences the measurement accuracy of temperature, makes the device's reliability higher.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the installation relationship between the semicircular plate and the rolling roller according to the present invention;
FIG. 3 is a schematic diagram of the matching relationship between the driving plate, the driven plate and the middle plate;
FIG. 4 is an enlarged view of the structure at position C of the present invention;
FIG. 5 is a schematic view showing the connection relationship between the telescopic rod, the cylinder and the probe according to the present invention;
FIG. 6 is an enlarged view of the structure at A in the drawings of the present invention;
FIG. 7 is an enlarged view of the structure at B of the present invention;
FIG. 8 is a schematic view of the present invention showing the measuring stand separated from the semicircular plate;
FIG. 9 is a schematic view of the fitting relationship between the positioning rod and the middle plate;
FIG. 10 is a schematic view of the spiral water discharge and probe needle relationship of the present invention;
FIG. 11 is a schematic view of the arcuate plate of the present invention about to contact the ground;
FIG. 12 is a schematic view of the probe pin of the present invention inserted into a road surface;
FIG. 13 is a schematic view showing the relative rotation between the probe, the telescopic rod and the cylinder according to the present invention;
FIG. 14 is a schematic view of the relationship between the telescopic rod and the cylinder.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be described in detail with reference to the accompanying drawings 1 to 14.
Embodiment 1, this embodiment provides a high modulus bituminous pavement construction method based on heavy traffic, including the following steps:
the first step is as follows: dry-mixing the coarse aggregate, the fine aggregate, the filler and the high modulus agent in corresponding amount and proportion according to the design technical requirements, keeping the dry-mixing temperature at 175-185 ℃ and keeping the dry-mixing time at 10-15 s;
the second step is that: adding liquid asphalt into the dry-mixed mineral aggregate and stirring for 45-53s within the range of 165-175 ℃;
the third step: spreading at 155-160 deg.c with spreading machine;
the fourth step: the method comprises the following steps of (1) carrying out rolling by following a road roller behind a paver and ensuring that the temperature in the asphalt mixture during rolling is not lower than 150 degrees;
note: when the road roller rolls the asphalt mixture, the uniform speed is kept for rolling
Example 2, on the basis of example 1, the rolling temperature of the asphalt mixture in the fourth step of the above example was measured using an insertion thermometer with a metal probe;
note: when a metal probe needle is inserted into the asphalt mixture to be measured, a mechanical device is adopted to replace a manual measurement mode so as to avoid the damage of the high temperature of the asphalt mixture and the volatile pungent gas to the body of a constructor;
in addition, in the rolling process of the asphalt mixture by the road roller, the temperature of the asphalt mixture should be periodically measured at a certain frequency, so that a constructor can master the temperature inside the asphalt mixture in the rolling process in real time, and accordingly the construction condition can be adjusted (considering the heat preservation treatment of the asphalt mixture in the transportation process and controlling the paving rate of the asphalt mixture), the temperature of the asphalt mixture during rolling is in a controllable and required range, and the construction quality of a road is ensured.
Example 3, this example provides an implementation manner of measuring the internal temperature of an asphalt mixture, which is specifically as follows:
as shown in the attached figure 1, including a rolling roller 1 and the rolling roller 1 is driven by the roller (the whole figure of the roller is not shown, the roller is the prior art), the improvement of the embodiment is that, as shown in the attached figure 2, a semicircular plate 2 (the semicircular plate 2 and the rolling roller 1 are fixedly installed coaxially) is detachably arranged on one side of the rolling roller 1 in the transverse direction, a measuring frame 3 elastically connected with the semicircular plate 2 is installed on the semicircular plate 2 in the radial direction in a sliding way, a driving plate 5 is installed on the semicircular plate 2 in the radial direction in the sliding way, a driving spring 6 is connected between the driving plate 5 and the semicircular plate 2, as shown in the attached figure 3, the driving plate 5 drives a driven plate 7 installed in the radial direction of the semicircular plate 2, the driven plate 7 is matched with an intermediate plate 8 installed in the radial direction of the semicircular plate 2 in the sliding way, and the driven plate 7 is connected with the intermediate plate 8 through the intermediate spring 9, as shown in the attached figure 11, when the initial driving plate 5 is in the natural state, the end of the roller far from the center of the roller 1 is beyond the outer circumference of the roller 1, and the positioning device arranged on the semicircular plate 2 realizes the positioning of the middle plate 8 (making the middle plate 8 immovable), and drives the roller 1 to rotate relative to the road surface along the direction shown in the attached figure 11 along with the advance of the roller, so that when one end of the driving plate 5 far away from the center of the rolling roller 1 is abutted against the road surface, the driving plate 5 moves relative to the semi-circular plate 2, i.e. the active plate 5 is gradually moved towards the position close to the centre of the roller 1 by the pressing action (so that the active spring 6 is compressed and stored energy, the active spring 6 is initially in a natural extension state), synchronously driving the driven plate 7 which is arranged along the radial direction of the semicircular plate 2 in a sliding way during the movement of the driving plate 5 and driving the driven plate 7 to move in a direction away from the center of the laminating roller 1 (the moving directions of the two are opposite);
since the intermediate plate 8 is positioned by the positioning device, the intermediate spring 9 connected between the intermediate plate 8 and the driven plate 7 is continuously compressed (initially, the intermediate spring 9 is in a natural extension state), and when the driving plate 5 is contracted to be flush with the outer circumferential surface of the rolling roller 1 beyond the outer circumferential surface of the rolling roller 1 along with the advance of the roller, as shown in fig. 12, the driving plate 5 slides to a maximum distance along the radial direction of the semicircular plate 2 (at this time, the intermediate spring 9 connected between the intermediate plate 8 and the driven plate 7 is also compressed to a maximum state), we set that the transmission mechanism connected to the driving plate 5 through the precast pile just achieves the positioning release of the positioning device to the intermediate plate 8, and the intermediate plate 8 after the positioning is lost is subjected to a large elastic force of the intermediate spring 9, so that the intermediate plate 8 moves rapidly in the radial direction of the semicircular plate 2 away from the rolling roller 1, the measuring frame 3 which is arranged along the radial direction of the semi-circular plate 2 in a sliding mode is driven to synchronously and rapidly move towards a position far away from the center of the rolling roller 1 along with the movement of the middle plate 8, a temperature measuring device is arranged on the measuring frame 3, and when the measuring frame 3 rapidly moves towards the road surface, the temperature measuring device is inserted into the asphalt mixture and the measurement of the internal temperature of the asphalt mixture in the rolling process is realized;
at the moment, the temperature measuring device is inserted into the asphalt mixture and stays in the asphalt mixture for a period of time (the time provides a time allowance for the temperature measuring device to measure the internal temperature of the asphalt mixture, so that the temperature measuring result is closer to an actual value, and the measuring result is more accurate and reliable), and the temperature measuring device is driven to be pulled out of the asphalt mixture (a temperature measuring work is completed) under the pulling of the rolling roller 1 (the rotation of the rolling roller 1 causes an oblique pulling force to the temperature measuring device inserted into the asphalt mixture) along with the continuous advancing of the road roller after the temperature measuring device stays in the asphalt mixture for a set time;
note: before the temperature measuring device is not pulled out from the asphalt mixture, along with the advance of the rolling roller 1, that is, when the driving plate 5 continues to rotate along with the rolling roller 1 from the position in fig. 12, the driving plate 5 starts to move towards the position away from the center of the rolling roller 1 under the action of the driving spring 6 to the initial position, as shown in fig. 13 (at this time, the temperature measuring device is still inserted into the asphalt mixture and the driving plate 5, the driven plate 7 and the middle plate 8 all complete the reset), along with the continuous rotation of the rolling roller 1, when the temperature measuring device stays in the asphalt mixture for a set time, the temperature measuring device is driven to be pulled out from the asphalt mixture, the pulled-out temperature measuring device immediately completes the reset (that is, in the initial state), at this time, all the components have recovered to the initial state, along with the rotation of the rolling roller 1, so that when the rotation is again carried out to the state shown in fig. 11, the temperature measuring operation for the next measuring position is started, the specific process is the same as above, and will not be described too much;
note: as shown in the attached drawing 1, due to the fact that the semicircular plate 2 and the rolling roller 1 are detachably mounted, constructors can correspondingly set the measuring mode of the internal temperature of the asphalt mixture according to actual construction requirements (the working of the device is further improved, the diversity and the selectivity are realized), and the following combination modes are provided:
1. two semicircular plates 2 are arranged on one transverse side of the rolling roller 1, and each semicircular plate 2 is provided with a temperature measuring device and an accessory structural component, namely, in the state shown in the attached drawing 1, the temperature of the asphalt mixture on one transverse side of the rolling roller 1 can be measured at a higher frequency;
2. the semi-circular plate 2 is arranged on one transverse side of the rolling roller 1, so that the temperature of the asphalt mixture on one transverse side of the rolling roller 1 can be measured at a lower frequency;
3. the semi-circular plates 2 are respectively arranged on the two transverse sides of the rolling roller 1, and the temperature of the asphalt mixture on the two transverse sides of the rolling roller 1 can be measured at a lower frequency at the same time;
4. two semicircular plates 2 are respectively arranged on the two transverse sides of the rolling roller 1, and the temperature of the asphalt mixture on the two transverse sides of the rolling roller 1 can be measured at high frequency at the same time;
this embodiment, through incessant and measure the inside temperature of the bituminous mixture of the formula of rolling with certain frequency periodicity for constructor can understand the temperature in the bituminous mixture when mastering rolling, and then according to bituminous mixture's temperature and corresponding certain measure of taking, for example, strengthen the technical means such as heat preservation measure of bituminous mixture in the transportation and heating when paving, when guaranteeing bituminous mixture to roll, its inside temperature is in construction requirement within range, and then obtain better road surface construction quality.
Embodiment 4, on the basis of embodiment 3, as shown in fig. 3, the driving plate 5 includes a U-shaped frame 10 slidably mounted on the semicircular plate 2, and an arc-shaped plate 11 is fixed at a lower end of the U-shaped frame 10 (the driving spring 6 is connected between the semicircular plate 2 and the U-shaped frame 10), a driving rack 12 extending vertically is integrally disposed on the U-shaped frame 10, and the driving rack 12 drives a gear 13 rotatably mounted on a side wall of the semicircular plate 2, when the arc-shaped plate 11 is located at the position shown in fig. 11 along with the rotation of the rolling roller 1, the arc-shaped plate 11 is forced to move toward a central position close to the rolling roller 1 along with the continuous rotation of the rolling roller 1, and then the driven plate 7 slidably mounted along the radial direction of the semicircular plate 2 is driven to move along an opposite direction by the driving rack 12, the gear 13, and the driven rack 14.
as shown in fig. 9, a connecting rod 18 is rotatably mounted on the U-shaped frame 10, a sliding block 19 is rotatably mounted at the other end of the connecting rod 18, the sliding block 19 is slidably mounted on the lower end surface of the positioning rod 16, a sliding groove (not numbered) matched with the sliding block 19 is formed in the lower end surface of the positioning rod 16, if the sliding block 19 is fixedly mounted on the lower end surface of the positioning rod 16, when the arc plate 11 rotates to the position shown in fig. 11 and moves along the radial direction of the semicircular plate 2 along with the continuous advance of the rolling roller 1 and the extrusion of the asphalt pavement, the positioning rod 16 is driven by the connecting rod 18 to withdraw from the positioning hole 15 when the arc plate 11 moves a slight distance, so as to release the positioning effect on the intermediate plate 8, and at this time, the arc plate 11 just moves a slight distance along the radial direction of the semicircular plate 2 (the intermediate spring 9 connected between the driven plate 7 and the intermediate plate 8 is compressed by a slight amount), and at this time, the movement of the measuring frame 3 cannot be driven and the temperature measuring device is inserted into the asphalt mixture (no sliding block is used (no longer, no sliding block 19 is used Measuring the internal temperature of the asphalt mixture by the method);
therefore, the sliding blocks 19 and the lower end surfaces of the positioning rods 16 are slidably mounted, in an initial period of time when the arc plate 11 moves towards the central position close to the rolling roller 1, the U-shaped frame 10 only drives the sliding blocks 19 to relatively slide relative to the positioning rods 16 through the connecting rods 18 (without driving the positioning rods 16 to move), and we set that only when the arc plate 11 moves to the position shown in fig. 12, the opposite sides of the two sliding blocks 19 are already abutted against the sliding chute side walls in sliding fit with the sliding blocks, and along with the continuous upward movement of the arc plate 11, the U-shaped frame 10 drives the positioning rods 16 to move towards the direction far away from the middle plate 8 through the actions of the connecting rods 18 and the sliding blocks 19, so that the positioning rods 16 are withdrawn from the positioning holes 15, and the positioning of the middle plate 8 is released (at this time, the middle spring 9 is also compressed to the maximum extent);
as shown in fig. 3, with the release of the positioning of the intermediate plate 8, the intermediate plate 8 moves down rapidly under the action of the intermediate spring 9 and drives the measuring rack 3, which is also mounted to slide along the radial direction of the semicircular plate 2, to move down (the driven plate 7, the intermediate plate 8, and the measuring rack 3 share the same slide, which is not numbered in the figure, and initially, the lower end face of the intermediate plate 8 is spaced from the measuring rack 3), during the rapid downward movement of the middle plate 8 and when the middle plate is contacted with the measuring rack 3, the measuring rack 3 is synchronously driven to rapidly move downwards (the middle plate 8 acts on the measuring rack 3 under the action of the elastic potential energy of the middle spring 9 with a large impact force), along with the rapid downward movement of the measuring rack 3, so that the temperature measuring device mounted thereon is inserted into the asphalt mixture and the measurement of the internal temperature of the asphalt mixture is achieved (at this time, the active spring 6 connected between the measuring frame 3 and the semicircular plate 2 is compressed);
note: because the moving speed of the road roller when rolling the asphalt mixture is slow, the default temperature measuring device can be instantly inserted into the asphalt mixture, as shown in fig. 9, the lower end face of the positioning rod 16 is chamfered, so that when the arc plate 11 is not extruded by the road surface, that is, the arc plate 11 is not in the vertical position along with the advance of the rolling roller 1, the driving plate 5 composed of the arc plate 11 and the U-shaped frame 10 moves towards the position far from the center of the rolling roller 1 under the action of the driving spring 6 along with the continuous rotation of the rolling roller 1, and along with the movement of the driving plate 5, the driven plate 7 is driven by the matched gear 13, the driving rack 12 and the driven rack 14 to synchronously move towards the position near the center of the rolling roller, and during the moving process, the driven plate 7 drives the intermediate plate 8 to synchronously move through the intermediate spring 9 until the intermediate plate 8 moves upwards to be contacted with the chamfered position of the positioning rod 16, the positioning rods 16 are pressed towards two sides, and when the middle plate 8 moves to the initial position, the positioning rods 16 are inserted into the positioning holes 15 again under the action of the positioning springs 17 to realize the re-positioning of the middle plate 8;
as shown in fig. 5, preferably, we can also integrally set a butt plate on the middle plate 8, and when the middle plate 8 moves downward under the driving of the driven plate 7, the positioning rod 16 withdrawn from the positioning hole 15 always butts against the butt plate, so that when the middle plate 8 moves to the initial position again, the positioning rod 16 butts against the butt plate can be directly inserted into the positioning hole 15 corresponding to the positioning rod, and then the positioning effect on the middle plate 8 is realized, at this time, the lower end surface of the positioning rod 16 does not need to be chamfered (the skilled in the art can select a corresponding mode according to actual requirements when setting).
Example 6, on the basis of example 1, as shown in fig. 3, the temperature measuring device comprises a cylinder 20 rotatably mounted on a measuring frame 3 (the cylinder 20 is rotatably mounted on the measuring frame 3 along the advancing direction of the rolling roller 1) and a telescopic rod 21 is axially slidably mounted in the cylinder 20 (a telescopic spring 22 is connected between the telescopic rod 21 and the cylinder 20, as shown in fig. 5), a probe 23 is rotatably mounted at one end of the telescopic rod 21, which is arranged outside the cylinder 20 (the probe 23 is also rotatably mounted with the telescopic rod 21 along the advancing direction of the rolling roller 1), under the action of a first torsion spring 24 and a second torsion spring 25, a straight line is kept between the telescopic rod 21 and the probe 23 relative to the measuring frame 3, the cylinder 20, and the probe 23 is initially just level with or slightly shorter than the outer circumferential surface of the rolling roller 1 (as shown in fig. 11), when the arc-shaped plate 11 is located at the position shown in fig. 12, the intermediate plate 8 drives the measuring frame 3 to move downwards rapidly, and the detecting needle 23 is inserted into the asphalt mixture rapidly under the action of the impact force of the intermediate plate 8 on the measuring frame 3 (a temperature sensor is arranged in the detecting needle 23, and the bottom of the detecting needle 23 is arranged in a pointed shape, so that the detecting needle 23 is inserted into the asphalt mixture more easily, and a constructor accurately knows the temperature inside the asphalt mixture at the moment according to the temperature detected by the temperature sensor and judges whether the temperature is within the construction requirement range);
since the advancing speed of the roller is slow and the speed of inserting the probe 23 into the asphalt mixture is fast, during the whole inserting process of the probe 23, the probe 23 is inserted in a direction perpendicular to the road surface, i.e. the probe 23 inserted into the asphalt mixture is kept in a vertical state, as shown in fig. 12, along with the continuous advancing of the rolling roller 1, the cylinder 20 is caused to rotate relative to the measuring frame 3 and the probe 23 relative to the telescopic rod 21, as shown in fig. 13 (because the probe 23 is inserted into the asphalt mixture and the asphalt mixture has a certain viscosity, the pulling-out of the probe 23 is resisted to a certain degree), and therefore, along with the continuous rotating of the rolling roller 1, the cylinder 20, the measuring frame 3, the telescopic rod 21 and the probe 23 are caused to rotate relative to each other (the first torsion spring 24 and the second torsion spring 25 also store energy synchronously, setting the acting forces exerted on the probe needle 23 and the cylinder 20 by the first torsion spring 24 and the second torsion spring 25 to prevent the probe needle 23 from being pulled out of the asphalt mixture);
meanwhile, the arc plate 11 is not extruded by the asphalt pavement any more, and moves away from the center of the rolling roller 1 under the action of the driving spring 6, that is, the driven plate 7 and the intermediate plate 8 are driven to complete the reset, and the measuring rack 3, the cylinder 20, the telescopic rod 21 and the probe 23 are further driven to rotate relatively along with the continuous rotation of the rolling roller 1, as shown in fig. 14, the telescopic rod 21 and the cylinder 20 are axially slidably mounted, and the inner wall of the cylinder 20 is provided with sliding grooves (not numbered in the figure) at both axial sides thereof, and the telescopic rod 21 is connected with the telescopic spring 22, and at the beginning, the protrusions are abutted against the top wall of the sliding grooves, so that when the measuring rack 3 moves downward under the impact force of the driven plate 7, the cylinder 20 and the telescopic rod 21 cannot move, as shown in fig. 13, the telescopic rod 21 slides a greater and greater distance with respect to the cylinder 20 with the further advance of the roller 1, so that when the lugs arranged at the two axial sides of the telescopic rod 21 abut against the bottom wall of the chute, the relative movement between the cylinder 20 and the telescopic rod 21 cannot be continuously generated, therefore, the detection needle 23 inserted into the asphalt mixture is pulled out outwards through the matching of the cylinder 20 and the telescopic rod 21 along with the rotation of the rolling roller 1, after the detection needle 23 is pulled out outwards from the asphalt mixture, under the action of the first torsion spring 24, the probe 23 rotates to the initial position relative to the telescopic rod 21, under the action of the second torsion spring 25, the cylinder 20 is rotated towards the initial position with respect to the measuring stand 3, so that the relative positions of the cylinder 20, the telescopic rod 21 and the probe 23 are restored to the initial state, i.e. as shown in fig. 11, while the measuring stand 3 is also moved to the initial position by the measuring spring 4 and the resetting is completed.
Embodiment 7, on the basis of embodiment 6, as shown in fig. 8, a position corresponding to a sliding contact portion of the measuring rack 3 on the semicircular plate 2 is provided with a limit block 27 (the upper end surface of the limit hole 26 is chamfered to facilitate the insertion into the measuring rack 3) and the measuring rack 3 is provided with a limit hole 26, so that after the measuring rack 3 moves a set distance along the radial direction of the semicircular plate 2, the limit block 27 is inserted into the limit hole 26 to limit the measuring rack 3, and the limit block 27 and the limit hole 26 are provided in a matching manner, so as to avoid that when the arc plate 11 is not pressed by a road surface, the driven plate 7 and the intermediate plate 8 are reset and no force is applied to the measuring rack 3, and the measuring spring 4 is connected between the measuring rack 3 and the semicircular plate 2 and is in a compressed state, if the measuring rack 3 is not limited, the measuring rack 3 is driven to move to an initial position by the measuring spring 4, at this time, the probe 23 inserted into the asphalt mixture may be pulled out (which results in a short temperature measurement time and cannot realize accurate measurement of the temperature in the asphalt mixture, and the temperature sensor measures the temperature which is not completed instantly), so the arrangement of the limit block 27 and the limit hole 26 which are matched with each other can prevent the measuring frame 3 from moving to the initial position under the action of the measuring spring 4;
the upper end of the limiting block is chamfered, so that when the measuring frame 3 moves along the radial direction of the semicircular plate 2 under the action of the middle plate 8, the limiting block 27 can be crossed, and when the limiting hole 26 arranged on the measuring frame 3 moves to a position opposite to the limiting hole 26, the limiting block 27 is inserted into the limiting hole 26 to achieve the effect of limiting the measuring frame 3;
when the probe needle 23 is pulled out from the asphalt mixture, constructor controls the limit block 27 to withdraw from the limit hole 26, so that the measuring frame 3 is restored to the initial position under the action of the measuring spring 4, and the reset is completed, as shown in fig. 8, for a better real-time scheme, a blocking block (not shown in the figure) can be integrally arranged on the side wall of the slide below the limit block 27, so that the measuring frame moves down to the limit block 27 just to be inserted into the limit hole 26 under the impact action of the middle plate 8, the lower end surface of the measuring frame 3 just abuts against the blocking block at the moment, so that the measuring frame 3 cannot move down under the action of the blocking block (namely, the distance of the measuring frame 3 moving along the radial direction of the semicircular plate 2 at each time is a fixed value, and the depth of the probe needle 23 inserted into the asphalt mixture is a fixed value).
that is, initially, as shown in fig. 6, the telescopic portion of the second electric push rod 30 fixedly installed on the measuring rack 3 is inserted into the cylinder 20 to limit the cylinder 20, as shown in fig. 7, the telescopic portion of the first electric push rod 29 fixedly installed at the bottom of the telescopic rod 21 is inserted into the upper end of the probe 23 to limit the probe 23, under the action of the first electric push rod 29 and the second electric push rod 30, a straight line is maintained among the measuring rack 3, the cylinder 20, the telescopic rod 21 and the probe 23 without rotation, when the measuring rack 3 is lowered to a set position, that is, when the limit block 27 is inserted into the limit hole 26 (at this time, the measuring rack 3 moves along the semicircular plate 2 in the radial direction by the farthest distance), the trigger switch installed in the limit hole 26 is triggered and the microcontroller controls the first electric push rod 29 and the second electric push rod 30 to move, namely, the telescopic part is withdrawn from the cylinder 20 and the probe 23, so that the cylinder 20 can rotate relative to the measuring frame 3 and the probe 23 can rotate relative to the telescopic rod 21;
preferably, the outer surfaces of the telescopic parts of the first electric push rod 29 and the second electric push rod 30 are covered with a layer of elastic rubber pad, so that the measuring frame 3, the cylinder 20, the telescopic rod 21 and the probe 23 have reliable spacing and have slight elasticity, that is, the cylinder 20, the measuring frame 3, the telescopic rod 21 and the probe 23 cannot rotate at a large angle in the process of inserting the probe 23 into the asphalt mixture;
when the probe 23 is pulled out of the asphalt mixture and the relative positions of the probe 23, the telescopic rod 21, the cylinder 20 and the measuring frame 3 are restored to the initial positions, the microcontroller controls the first electric push rod 29 and the second electric push rod 30 to act again and enables the telescopic parts of the first electric push rod 29 and the second electric push rod 30 to be inserted into the cylinder 20 and the probe 23 again to achieve limiting (as to when the microcontroller controls the first electric push rod 29 and the second electric push rod 30 to extend, the time can be set by the microcontroller in advance, and the microcontroller only controls the first electric push rod 29 and the second electric push rod 30 to act when the relative positions of the probe 23, the telescopic rod 21, the cylinder 20 and the measuring frame 3 are restored);
when the probe pin 23 is pulled out from the asphalt mixture, as to how the constructor controls the stopper 27 to be withdrawn from the stopper hole 26, in this embodiment, as shown in fig. 8, an electromagnet (the electromagnet is electrically connected to the electrical circuit and the microcontroller controls the on/off of the electrical circuit) may be disposed in the limiting hole 26, and a magnet is mounted at one end of the limiting block 27 inserted into the limiting hole 26, when the probe 23 is completely pulled out from the asphalt mixture, the microcontroller controls the electric loop to be connected and enables the electromagnet to be electrified to generate the same magnetic force as the magnet, therefore, the limiting block 27 is withdrawn from the limiting hole 26 under the condition of the same level exclusion, and of course, the on-time of the microcontroller for controlling the electric circuit is also preset according to the time for pulling the probe 23 out of the asphalt mixture (the on-time of the microcontroller for controlling the electric circuit is later than the time for pulling the probe 23 out of the asphalt mixture pavement).
Example 9, on the basis of example 8, as shown in fig. 4, in order to clean the asphalt mixture adhered to the surface of the probe pin 23 and prevent the asphalt mixture from affecting the temperature measurement, a semi-circular scraper 31 (the inner circle of the semi-circular scraper 31 is tapered) matched with the probe pin 23 is fixedly installed on the driving plate 5, and arc-shaped scrapers 32 are respectively installed at two ends of the semi-circular scraper 31 in a rotating manner, as shown in fig. 10, initially, the matched semi-circular scraper 31 and the two arc-shaped scrapers 32 completely cover the surface of the probe pin 23, as shown in fig. 11, when the arc-shaped plate 11 rotates to the position, along with the continuous rotation of the grinding roller 1, the arc-shaped plate 11 is forced to move upwards along the radial direction of the semi-circular plate 2, and then the matched semi-circular scraper 31 and the two arc-shaped scrapers 32 are synchronously driven to move relative to the surface of the probe pin 23, and in the moving process, the semi-circular scraper 31 and the two arc scrapers 32 can clean and scrape asphalt mixture attached to the surface of the probe needle 23 (that is, asphalt mixture attached to the surface of the probe needle 23 after the last temperature measurement work is completed), when the probe needle 23 is inserted into the asphalt mixture, the arc plate 11 is synchronously driven to continuously rotate along with the rotation of the grinding roller 1 (at this time, the probe needle 23 is located in the asphalt mixture and is not moved due to the viscous resistance of the asphalt mixture), so that the two arc scrapers 32 rotatably mounted on the semi-circular scraper rotate relative to the semi-circular scraper 31, so that the two arc scrapers 32 cross the probe needle 23, and then the two arc scrapers 32 are driven to complete resetting under the action of the third torsion spring 33, and at this time, the probe needle 23 is separated from the matched semi-circular scraper 31 and the two arc scrapers 32;
as shown in fig. 4, a guide plate 34 is integrally provided on a side of the two arc scrapers 32 away from the semi-arc scrapers 31, and the guide plate 34 is provided to force the two arc scrapers 32 to rotate and open again relative to the semi-arc scrapers 31 by pressing the two guide plates 34 when the outer surface of the probe 23 touches the two guide plates 34 during the process that the probe 23 is pulled out from the asphalt mixture and the probe 23 is reset relative to the telescopic rod 21 and the cylinder 20 relative to the measuring rack 3 under the action of the first torsion spring 24 and the second torsion spring 25, so that the probe 23 enters the circular space formed by the semi-arc scrapers 31 and the two arc scrapers 32 and returns to the initial state.
Example 10 on the basis of example 9, as shown in fig. 10, we can install a cavity (not shown) in the active plate 5 (i.e. the arc plate 11) and store cooling liquid in the cavity, install a spiral water drain 35 below the semi-circular scraper 31 (the spiral water drain 35 is disposed around the surface of the probe 23), the spiral water drain 35 is communicated with the cavity through a hidden pipe and forms a closed loop with the cavity, when the probe 23 is pulled out from the asphalt mixture, the cooling liquid is pumped into the spiral water drain 35 by a micro booster pump disposed in the cavity for rapidly cooling the probe 23, so as to achieve the effect of rapidly cooling the probe 23, so that the temperature transmitted to the constructor by the temperature sensor in the probe 23 before the next temperature measurement remains at the temperature of the previous temperature measurement, if the true temperature of the next measurement point is too low (when the probe 23 is inserted into the next measurement point and performs the measurement, so that the measured temperature is higher than the real temperature), misleading is easily generated for constructors, and further misjudgment is generated for the temperature in the asphalt mixture;
note: when the arc-shaped plate 11 is arranged, the width of the contact part between the arc-shaped plate and the asphalt pavement is wider, so that the arc-shaped plate is prevented from being stuck into the asphalt mixture when contacting the asphalt pavement, and the situation can be better avoided due to the wider width of the arc-shaped plate.
The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.
Claims (9)
1. A high-modulus asphalt pavement construction device based on heavy-duty traffic comprises a rolling roller (1) and the rolling roller (1) is driven by a road roller, and is characterized in that a semicircular plate (2) is detachably arranged on one transverse side of the rolling roller (1), a measuring frame (3) elastically connected with the semicircular plate (2) is arranged on the semicircular plate (2) in a sliding mode along the radial direction of the semicircular plate, a temperature measuring device is arranged on the measuring frame (3), a driving plate (5) elastically connected with the semicircular plate (2) is arranged on the semicircular plate (2) in a sliding mode along the radial direction of the semicircular plate, the driving plate (5) drives a driven plate (7) which is arranged in a sliding mode along the radial direction of the semicircular plate (2), the driven plate (7) is matched with an intermediate plate (8) which is arranged along the radial direction of the semicircular plate (2) in a sliding mode, and the driven plate (7) is elastically connected with the intermediate plate (8);
be equipped with on semicircle board (2) with intermediate lamella (8) complex positioner, drive board (5) are connected with positioner through drive mechanism, and drive board (5), driven board (7), intermediate lamella (8) cooperate and satisfy: after the driving plate (5) releases the positioning of the middle plate (8) through the transmission mechanism, the driven plate (7) can drive the measuring frame (3) to rapidly move along the radial direction of the semicircular plate (2) and towards the direction of the road surface through the middle plate (8);
the temperature measuring device comprises a cylinder (20) rotatably mounted on the measuring frame (3), a telescopic rod (21) elastically connected with the cylinder (20) is axially and slidably mounted in the cylinder (20), the telescopic rod (21) is arranged at one end outside the cylinder (20) and rotatably mounted with a probe (23), a first torsion spring (24) is connected between the probe (23) and the telescopic rod (21), and a second torsion spring (25) is arranged at the rotating part of the cylinder (20) and the measuring frame (3);
when the initial driving plate (5) is in a natural state, the length of one end of the initial driving plate, which is far away from the center of the rolling roller (1), exceeds the outer circumferential surface of the rolling roller (1).
2. The high-modulus asphalt pavement construction device based on heavy-duty traffic is characterized in that the driving plate (5) comprises a U-shaped frame (10) which is slidably mounted on the semicircular plate (2), an arc-shaped plate (11) is fixed at the lower end of the U-shaped frame (10), a driving rack (12) which extends vertically is integrally arranged on the U-shaped frame (10), a gear (13) which is rotatably mounted on the side wall of the semicircular plate (2) is driven by the driving rack (12), and a driven rack (14) which is meshed with the gear (13) is integrally arranged on the driven plate (7).
3. The construction device for the high modulus asphalt pavement based on heavy load traffic as claimed in claim 2, wherein the positioning device comprises positioning holes (15) arranged at two sides of the middle plate (8), positioning rods (16) matched with the positioning holes (15) are slidably arranged on the side walls of the semi-circular plate (2), and positioning springs (17) are connected between the positioning rods (16) and the side walls of the semi-circular plate (2);
the transmission mechanism comprises a connecting rod (18) rotatably mounted with the U-shaped frame (10), a sliding block (19) is rotatably mounted at the other end of the connecting rod (18), the sliding block (19) is slidably mounted on the lower end face of the positioning rod (16), and the lower end face of one side, matched with the positioning hole (15), of the positioning rod (16) is chamfered.
4. The construction device for the high modulus asphalt pavement based on heavy traffic as claimed in claim 1, wherein the measuring rack (3) is provided with limiting holes (26) at both sides thereof and the semicircular plate (2) is slidably provided with limiting blocks (27) engaged with the limiting holes (26), the limiting blocks (27) are elastically connected with the semicircular plate (2) and the upper ends of the engaged parts of the limiting blocks (27) and the limiting holes (26) are chamfered.
5. The construction device for the high-modulus asphalt pavement based on heavy-duty traffic is characterized in that a first electric push rod (29) is fixedly mounted on the measuring frame (3), the telescopic part of the first electric push rod (29) is in sliding fit with the cylinder (20), a second electric push rod (30) is fixed in the telescopic rod (21), and the telescopic part of the second electric push rod (30) is in sliding fit with the probe needle (23);
the first electric push rod (29) and the second electric push rod (30) are electrically connected with a microcontroller, and a trigger switch electrically connected with the microcontroller is arranged in the limiting hole (26).
6. The high modulus asphalt pavement construction device based on heavy load traffic as claimed in claim 5, wherein the driving plate (5) is fixedly provided with a semi-circular scraper (31) matched with the probe (23), two ends of the semi-circular scraper (31) are respectively rotatably provided with an arc scraper (32), the rotating installation part of the arc scraper (32) and the semi-circular scraper (31) is provided with a third torsion spring (33), and one opposite side of the two arc scrapers (32) is integrally provided with a guide plate (34).
7. The construction device for the high modulus asphalt pavement based on heavy-duty traffic as claimed in claim 6, wherein a cavity is arranged in the active plate (5) and the cavity is filled with cooling liquid, a spiral water drain (35) is installed below the semi-circular scraper (31), the spiral water drain (35) is communicated with the cavity through a concealed pipe and forms a closed loop with the cavity, and a micro booster pump is arranged in the cavity.
8. A construction method of high modulus bituminous pavement based on heavy-duty traffic, which adopts the construction device of high modulus bituminous pavement based on heavy-duty traffic as claimed in any one of claims 1-7, and is characterized by comprising the following steps:
s1: dry-mixing the coarse aggregate, the fine aggregate, the filler and the high modulus agent in corresponding amount and proportion according to the design technical requirements, keeping the dry-mixing temperature at 175-185 ℃ and keeping the dry-mixing time at 10-15 s;
s2: adding liquid asphalt into the dry-mixed mineral aggregate and stirring for 45-53s within the range of 165-175 ℃;
s3: spreading at 155-160 deg.c with spreading machine;
s4: the paving machine is followed by the road roller for rolling and the temperature in the asphalt mixture is ensured to be not lower than 150 degrees during rolling.
9. The construction method of high modulus asphalt pavement based on heavy-duty traffic as claimed in claim 8, wherein the rolling temperature of asphalt mixture in S4 is measured by using an insertion thermometer with metal probe.
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Address after: 101100 room 216, No. 7, Wuxing Road, Lucheng Town, Tongzhou District, Beijing Patentee after: ROAD & BRIDGE INTERNATIONAL Co.,Ltd. Patentee after: ZHONGJIAO ROAD & BRIDGE NORTH ENGINEERING Co.,Ltd. Address before: 100000 401, floor 4, building 4, courtyard 20, Kechuang 14th Street, Beijing Economic and Technological Development Zone Patentee before: ZHONGJIAO ROAD & BRIDGE NORTH ENGINEERING Co.,Ltd. Patentee before: ROAD & BRIDGE INTERNATIONAL Co.,Ltd. |
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