Temperature control method and device for asphalt mixture construction

Abstract

The invention relates to the technical field of asphalt temperature control, in particular to an asphalt mixture construction temperature control method and device.The right end of a driving vehicle is rotationally connected with a telescopic rod through a hinge, and the movable end of the right side of the telescopic rod is fixedly connected with a U-shaped connecting frame; the inner sides of the front end and the rear end of the connecting frame are each rotationally connected with two coaxial baffles, through holes are formed in the baffles, the through holes are used for achieving heat dissipation, the baffles are in a regular polygon shape, a plurality of outer supporting faces are fixedly connected between the two baffles, the outer supporting faces are in a flat state, and a plurality of heat collecting plates are arranged on the inner side of each outer supporting face. Measurement is carried out through a thermocouple contact measurement mode, the cost is low, and the influence of heat convection brought by asphalt concrete and external wind force on infrared detection non-contact measurement can be ignored, so that the accuracy of temperature monitoring is effectively improved, corresponding effective measures are taken in time, and the measurement accuracy is improved. Cracks on the surface of the asphalt concrete are prevented.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt temperature control, and in particular to a temperature control method and device for asphalt mixture construction. Background Art

[0002] Asphalt concrete is a building material made of a mixture of stone, asphalt and other additives. It is usually used in road paving, parking lots, runways and other fields. In order to ensure its stability during pouring, compaction and curing, and to make the asphalt concrete meet the required strength and durability, it is necessary to control the temperature of the asphalt concrete. Because when the asphalt concrete is laid, it is limited by the unevenness of the base surface in the laying direction. In order to ensure the flatness of the road, the asphalt concrete laid will have different thicknesses to compensate. The inconsistent thickness of the asphalt concrete will lead to temperature differences in different areas of the asphalt concrete. The existence of temperature differences can easily cause cracks in the asphalt concrete after cooling down. The patent document with application number 202420886051.8 proposes an asphalt concrete temperature control device, which automatically monitors the temperature of the concrete layer poured on the road surface through an infrared detector. The infrared detector is a non-contact detection. The detection end is at a certain distance from the detection surface, and the detection surface is hot, so there is a large thermal convection effect. During the monitoring process, the rising hot air flow is affected by the external wind force and will change its original path, resulting in erroneous detection by the temperature detection device. At the same time, after the detection is completed, it is often necessary to process the positions with large temperature differences, such as using microwaves for compensatory heating at positions with lower temperatures. The presence of microwaves will interfere with the infrared detection device and cause inaccurate detection.

[0003] Therefore, in view of the above problems, a temperature control method and device for asphalt mixture construction are proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a temperature control method and device for asphalt mixture construction, so as to solve the problem of accurately and effectively finding the temperature difference position and performing temperature difference compensation proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temperature control device for asphalt mixture construction, comprising a driving vehicle, a heat diffusion plate and a controller, the right end of the driving vehicle is rotatably connected to a telescopic rod through a hinge, the right movable end of the telescopic rod is fixedly connected to a U-shaped connecting frame, the inner sides of the front and rear ends of the connecting frame are rotatably connected to two coaxial baffles, the baffles are provided with through holes, the through holes are used to achieve heat dissipation, the baffles are regular polygons, a plurality of external support surfaces are fixedly connected between two of the baffles, the external support surfaces are in a flat state, a plurality of heat collecting plates are arranged on the inner side of each external support surface, a second heat insulation strip is present between two adjacent heat collecting plates, a first heat insulation strip is arranged at both ends of each external support surface, and a thermocouple is fixedly connected to the surface of one side of the heat collecting plate close to the center line of the baffle; The driving vehicle moves forward at a constant speed to the right on the surface of the asphalt concrete, and the baffle can rotate intermittently to the right to move. During the rotation interval, the outer support surface at the bottom can be in close contact with the asphalt concrete surface. The thermocouple collects the temperature of the heat collecting plate corresponding to the lower outer support surface, and a single heat collecting plate is used as the width, so as to obtain the temperature difference of the asphalt concrete surface corresponding to the adjacent heat collecting plates; A marking component is fixedly connected to the right end of the connecting frame. When the temperature difference between the asphalt concrete surfaces corresponding to adjacent heating plates obtained by the thermocouple is too large, the controller controls the marking component to mark the location, and then a heat spreader is laid at the location where the temperature difference is too large, thereby reducing the cracking of the asphalt concrete caused by the temperature difference.

[0006] Under the above settings, the present invention uses a contact measurement method such as a thermocouple to perform measurement, which is not only low-cost, but also can ignore the influence of heat convection and external wind force caused by asphalt concrete on non-contact measurement such as infrared detection, thereby effectively increasing the accuracy of temperature monitoring and taking corresponding effective measures in time to prevent cracks from appearing on the surface of asphalt concrete; The driving vehicle in the present invention can be arranged at the rear side of the asphalt concrete paver. The driving vehicle and the concrete paver need to maintain a certain distance, and the driving vehicle and the concrete paver are kept in synchronous motion to ensure that the temperature detection time of the asphalt concrete after paving is nearly consistent. In order to further increase the detection accuracy of asphalt concrete, the lower outer support surface in the present invention can be in close contact with the surface of asphalt concrete and stay for a period of time to ensure that the temperature on the asphalt concrete can be smoothly transferred to the thermocouple; As a preferred temperature control device for asphalt mixture construction of the present invention, the heat collecting plate is made of copper or aluminum sheet, and the marking component is a sprayer, which is used to mark the road surface after being sprayed. The controller controls the marking component to mark the place, and then a soaking plate is laid at the place where the temperature difference is too large, so as to reduce the cracking of asphalt concrete caused by the temperature difference, or heating compensation is performed by microwave at a lower temperature; As a preferred temperature control device for asphalt mixture construction of the present invention, a central axis is fixedly connected between the center points of the two baffles, a support frame is fixedly connected to the outside of the central axis, and the other end of the support frame is fixedly connected to the first insulation strip or the second insulation strip.

[0007] As a temperature control device for asphalt mixture construction of the present invention, preferably, a push switch is fixedly connected to the inner side of the second heat insulation strip, and when the lower outer support surface is in close contact with the asphalt concrete surface, the push switch can be pressed down. In the process of driving the vehicle forward, the baffle rotates intermittently. Because of the existence of the push switch, it serves as a stop signal for the telescopic rod. After the lower outer support surface is in close contact with the asphalt concrete surface, the push switch is pressed down, and the telescopic rod stops immediately, so that the lower outer support surface can always be kept in close contact with the asphalt concrete surface; As the temperature control device for asphalt mixture construction of the present invention, preferably, the telescopic rod is a cylinder.

[0008] The baffle is stopped in such a way that the baffle is quickly driven to rotate by the telescopic rod to gain a time difference for the baffle to stop; As a preferred temperature control device for asphalt mixture construction of the present invention, the telescopic rod includes an outer rod and an inner rod, the inner rod is the movable end of the telescopic rod, the inner side of the outer rod is provided with a sliding groove and is slidably connected with a slide plate, the inner rod slides on the inner side of the outer rod, the right end of the slide plate is fixedly connected with a push rod, the right end of the push rod is fixedly connected with a push block, the upper side of the left end of the inner rod includes an empty groove, when the push block follows the slide plate to move to the right, it can support the empty groove and drive the inner rod to move to the right, when the push block follows the slide plate to move to the left, the push block is separated from the empty groove, and the push rod is reset independently.

[0009] As a preferred temperature control device for asphalt mixture construction of the present invention, a touch-sensitive switch is fixedly connected to the inner side of the outer rod. In an initial state, the inner rod is at the leftmost position and the inner rod is in contact with the touch-sensitive switch.

[0010] As a preferred temperature control device for asphalt mixture construction of the present invention, the right end of the skateboard is fixedly connected to a motor, the end of the main shaft of the motor is fixedly connected to a screw, the other end of the screw is rotatably connected to the inner side of the outer rod, and the outer side of the screw is spirally connected to the inner side of the skateboard.

[0011] The temperature control method for asphalt mixture construction comprises the following steps: S1: In the initial state, the baffle is at the initial position of the asphalt concrete, and the telescopic rod is at the shortest stroke position; S2: When working, the driving vehicle starts to move forward at a constant speed, and the telescopic rod quickly extends at a speed greater than the speed of the driving vehicle, causing the baffle to rotate , where n is the number of baffle edges, the outer support surface between the baffles rotates clockwise until the upper outer support surface rotates downward and fits tightly against the asphalt concrete surface, and the push switch is pressed down; S3: The driving vehicle continues to move to the right at a constant speed on the surface of the asphalt concrete, and the telescopic rod gradually shrinks to compensate. The shrinkage speed can keep the baffle relatively still, ensuring that there is enough time for temperature collection; S4: When the telescopic rod is at the shortest stroke position, the above steps S1-S3 are repeated to achieve temperature monitoring of the asphalt concrete throughout the entire process; S5: When the temperature difference between the asphalt concrete surfaces corresponding to the adjacent heating plates obtained by the thermocouple is too large, the controller controls the marking component to mark the location, and subsequently lays a heat spreader at the location where the temperature difference is too large, thereby reducing the cracking of the asphalt concrete caused by the temperature difference.

[0012] The temperature control method for asphalt mixture construction comprises the following steps: S1: In the initial state, the baffle is at the initial position of the asphalt concrete, and the telescopic rod is at the shortest stroke position; S2: When working, the driving vehicle starts to move forward at a constant speed, the motor rotates, and the rotation of the screw forces the slide plate to move to the right at a speed greater than the speed of the driving vehicle. The push block moves to the right with the slide plate, and the push block presses against the empty slot to drive the inner rod to move to the right, causing the baffle to rotate , where n is the number of baffle edges, the outer support surface between the baffles rotates clockwise until the upper outer support surface rotates downward and fits tightly against the asphalt concrete surface, and the push switch is pressed down. At this time, the controller controls the motor to reverse, so that the push rod resets independently; S3: The driving vehicle continues to move rightward at a constant speed on the surface of asphalt concrete. At this time, the baffle remains stationary to ensure that there is enough time for temperature collection. The inner rod slides on the inner side of the outer rod to compensate for the distance. S4: When the telescopic rod is at the shortest stroke position, that is, the inner rod is at the leftmost position, the inner rod contacts the touch-sensitive switch, and the above steps S1-S3 are repeated, thereby realizing the temperature monitoring of the asphalt concrete throughout the process; S5: When the temperature difference between the asphalt concrete surfaces corresponding to the adjacent heating plates obtained by the thermocouple is too large, the controller controls the marking component to mark the location, and subsequently lays a heat spreader at the location where the temperature difference is too large, thereby reducing the cracking of the asphalt concrete caused by the temperature difference.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The temperature control device for asphalt mixture construction of the present invention performs measurement by means of contact measurement such as thermocouples, which is not only low-cost, but also can ignore the influence of heat convection brought by asphalt concrete and external wind force on non-contact measurement such as infrared detection, thereby effectively increasing the accuracy of temperature monitoring and taking corresponding effective measures in time to prevent cracks from appearing on the surface of asphalt concrete. The driving vehicle in the present invention can be set on the rear side of the asphalt concrete paver, and the driving vehicle and the concrete paver need to maintain a certain distance, maintain synchronous movement of the driving vehicle and the concrete paver, and ensure that the time for temperature detection of the asphalt concrete after paving is close to the same.

[0014] 2. In order to further increase the detection accuracy of asphalt concrete, the temperature control device for asphalt mixture construction of the present invention has a lower outer support surface that can be in close contact with the surface of the asphalt concrete and stay there for a period of time to ensure that the temperature on the asphalt concrete can be smoothly transferred to the thermocouple.

[0015] 3. The temperature control device for asphalt mixture construction, in the initial state, the baffle is in the initial position of the asphalt concrete, and the telescopic rod is in the shortest stroke position. When working, the driving vehicle starts to move forward at a constant speed, and the telescopic rod is quickly extended at a speed greater than the speed of the driving vehicle, causing the baffle to rotate. , where n is the number of baffle edges. The outer support surface between the baffles rotates clockwise until the upper outer support surface rotates downward and fits tightly against the asphalt concrete surface. The push switch is pressed, and the driving vehicle continues to move to the right at a constant speed on the asphalt concrete surface. The telescopic rod gradually contracts to compensate. The contraction speed can keep the baffle relatively still, ensuring that there is enough time for temperature collection. When the telescopic rod is at the shortest stroke position, the above steps are repeated to achieve temperature monitoring of the asphalt concrete throughout the entire process.

[0016] 4. The temperature control device for asphalt mixture construction, in the initial state, the baffle is in the initial position of the asphalt concrete, and the telescopic rod is in the shortest stroke position. When working, the driving vehicle starts to move forward at a uniform speed, the motor rotates, and the rotation of the screw forces the slide plate to move to the right at a speed greater than the speed of the driving vehicle. The push block moves to the right with the slide plate, and the push block presses against the empty slot to drive the inner rod to move to the right to rotate the baffle. , where n is the number of baffle edges, so that the outer support surface between the baffles rotates clockwise until the outer support surface in the upper direction rotates downward and fits tightly against the asphalt concrete surface, and the push switch is pressed. At this time, the controller controls the motor to reverse, so that the push rod is reset independently, and the driving vehicle continues to move to the right at a uniform speed on the surface of the asphalt concrete. At this time, the baffle remains stationary to ensure that there is enough time for temperature collection. The inner rod slides on the inner side of the outer rod for distance compensation. When the telescopic rod is in the shortest stroke position, that is, the inner rod is in the leftmost position, the inner rod contacts the touch-sensitive switch, and the above steps are repeated to achieve full temperature monitoring of the asphalt concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall use structure of the present invention; Figure 2 This is a schematic diagram of the appearance structure of the forward roller of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure at A; Figure 4 It is a schematic diagram of the internal cross-sectional installation structure of the forward roller of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the installation structure at B in FIG. Figure 6 For the present invention Figure 4 Schematic diagram of the installation structure at C in the figure; Figure 7 It is a schematic diagram of the position of the forward roller and the driving vehicle in the initial state of the present invention; Figure 8 It is a schematic diagram of the forward roller of the present invention being rapidly extended and rotated by the telescopic rod; Fig. 9 It is a schematic diagram of the telescopic rod performing contraction compensation to maintain the forward roller relatively still when the driving vehicle of the present invention moves forward; Fig.10 It is a schematic diagram of the internal structure of the telescopic rod of the present invention during initialization, extension and compensation; Fig.11 For the present invention Fig.10 Schematic diagram of the installation structure at D in the figure; Fig.12 It is a schematic diagram of a further installation structure of the heat collecting plate of the present invention.

[0018] In the figure: 1. Asphalt concrete; 2. Heat soaking plate; 3. Driving vehicle; 4. Telescopic rod; 5. Connecting frame; 6. Marking assembly; 7. Baffle; 71. Through hole; 8. Heat collecting plate; 9. First heat insulation strip; 10. Push switch; 11. Second heat insulation strip; 12. Thermocouple; 13. Support frame; 14. Center axis; 15. Controller; 41. outer rod; 42. motor; 43. screw rod; 44. slide plate; 45. push rod; 451. push block; 46. inner rod; 461. empty slot; 47. touch-sensitive switch; 81. The third insulation strip. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1, please refer to Figure 1-Figure 9 , the present invention provides a technical solution: A temperature control device for asphalt mixture construction comprises a driving vehicle 3, a heat soaking plate 2 and a controller 15, wherein the right end of the driving vehicle 3 is rotatably connected to a telescopic rod 4 through a hinge, and the right movable end of the telescopic rod 4 is fixedly connected to a U-shaped connecting frame 5, and the inner sides of both front and rear ends of the connecting frame 5 are rotatably connected to two coaxial baffles 7, and the baffles 7 are provided with through holes 71, and the through holes 71 are used to achieve heat dissipation, and the baffles 7 are regular polygons, and a plurality of external support surfaces F are fixedly connected between the two baffles 7, and the external support surfaces F are in a flat state, and a plurality of heat collecting plates 8 are arranged on the inner side of each external support surface F, and a second heat insulating strip 11 is provided between two adjacent heat collecting plates 8, and a first heat insulating strip 9 is arranged at both ends of each external support surface F, and a thermocouple 12 is fixedly connected to the surface of the heat collecting plate 8 on one side close to the center line of the baffle 7; The driving vehicle 3 moves rightward at a constant speed on the surface of the asphalt concrete 1, and the baffle 7 can intermittently rotate rightward to move. During the rotation interval, the outer support surface F at the lower side can be in close contact with the surface of the asphalt concrete 1, and the thermocouple 12 collects the temperature of the heat collecting plate 8 corresponding to the lower outer support surface F, and takes a single heat collecting plate 8 as the width, so as to obtain the temperature difference of the asphalt concrete 1 surface corresponding to the adjacent heat collecting plates 8; the heat collecting plate 8 is cooled when it rotates to the upper side; The right end of the connecting frame 5 is fixedly connected with a marking component 6. When the temperature difference between the surfaces of the asphalt concrete 1 corresponding to the adjacent heating plates 8 obtained by the thermocouple 12 is too large, the controller 15 controls the marking component 6 to mark the place, and then the heat spreader 2 is laid at the place where the temperature difference is too large, so as to reduce the cracking of the asphalt concrete 1 caused by the temperature difference.

[0021] Under the above settings, the present invention uses the contact measurement method of the thermocouple 12 for measurement, which is not only low-cost, but also can ignore the influence of the heat convection and external wind force brought by the asphalt concrete 1 on the contactless measurement using infrared detection, thereby effectively increasing the accuracy of temperature monitoring and taking corresponding effective measures in time to prevent cracks from appearing on the surface of the asphalt concrete 1; The driving vehicle 3 in the present invention can be arranged at the rear side of the asphalt concrete paver. The driving vehicle 3 and the concrete paver need to maintain a certain distance, and keep the driving vehicle 3 and the concrete paver in synchronous motion, so as to ensure that the temperature detection time of the asphalt concrete 1 after paving is close to the same; In order to further increase the detection accuracy of the asphalt concrete 1, the lower outer support surface F in the present invention can be in close contact with the surface of the asphalt concrete 1 and stay for a period of time to ensure that the temperature on the asphalt concrete 1 can be smoothly transferred to the thermocouple 12; Specifically, the heat collecting plate 8 is made of copper or aluminum sheets, which have high thermal conductivity and low specific heat capacity, and are easy to circulate and collect heat. The marking component 6 is a sprayer, which is used to mark the road surface after being sprayed. The controller 15 controls the marking component 6 to mark the place, and then the heat plate 2 is laid at the place where the temperature difference is too large, so as to reduce the cracking phenomenon of the asphalt concrete 1 caused by the temperature difference, or to compensate for the heating by microwave at a lower temperature; Specifically, a central axis 14 is fixedly connected between the center points of the two baffles 7 , a support frame 13 is fixedly connected to the outer side of the central axis 14 , and the other end of the support frame 13 is fixedly connected to the first thermal insulation strip 9 or the second thermal insulation strip 11 .

[0022] Specifically, a push switch 10 is fixedly connected to the inner side of the second heat insulation strip 11, and when the outer support surface F on the lower side is in close contact with the surface of the asphalt concrete 1, the push switch 10 can be pressed down. In the process of driving the vehicle 3 forward, the baffle 7 rotates intermittently. Because of the existence of the push switch 10, it serves as a stop signal for the telescopic rod 4. After the outer support surface F on the lower side is in close contact with the surface of the asphalt concrete 1, the push switch 10 is pressed down, and the telescopic rod 4 stops immediately, so that the outer support surface F on the lower side can always keep in close contact with the surface of the asphalt concrete 1; Specifically, the telescopic rod 4 is a cylinder.

[0023] The baffle plate 7 is stopped in such a manner that the baffle plate 7 is quickly driven to rotate by the telescopic rod 4 to gain a time difference for the baffle plate 7 to stop.

[0024] This embodiment also discloses a temperature control method for asphalt mixture construction, the steps of which are: S1: In the initial state, the baffle 7 is at the initial position of the asphalt concrete 1, and the telescopic rod 4 is at the shortest stroke position; S2: When working, the driving vehicle starts to move forward at a constant speed, and the telescopic rod 4 is quickly extended at a speed greater than the speed of the driving vehicle 3, causing the baffle 7 to rotate , where n is the number of sides of the baffle 7, the outer support surface F between the baffles 7 is rotated clockwise until the upper outer support surface F is rotated downward and closely adheres to the surface of the asphalt concrete 1, and the push switch 10 is pressed down; S3: The driving vehicle 3 continues to move rightward at a constant speed on the surface of the asphalt concrete 1, and the telescopic rod 4 gradually contracts to compensate. The contraction speed can keep the baffle 7 relatively still, ensuring that there is enough time for temperature collection; S4: When the telescopic rod 4 is at the shortest stroke position, the above steps S1-S3 are repeated to achieve temperature monitoring of the asphalt concrete 1 throughout the entire process; S5: When the temperature difference between the surfaces of the asphalt concrete 1 corresponding to the adjacent heat extraction plates 8 obtained by the thermocouple 12 is too large, the controller 15 controls the marking component 6 to mark the location, and subsequently lays the heat spreader 2 at the location where the temperature difference is too large, thereby reducing the cracking of the asphalt concrete 1 caused by the temperature difference.

[0025] Example 2: This example is an improvement of Example 1. Figure 1-Figure 11 The telescopic rod 4 includes an outer rod 41 and an inner rod 46. The inner rod 46 is the movable end of the telescopic rod 4. A sliding groove is provided on the inner side of the outer rod 41 and is slidably connected to a slide plate 44. The inner rod 46 slides on the inner side of the outer rod 41. A push rod 45 is fixedly connected to the right end of the slide plate 44. A push block 451 is fixedly connected to the right end of the push rod 45. The upper side of the left end of the inner rod 46 includes an empty groove 461. When the push block 451 moves to the right with the slide plate 44, it can withstand the empty groove 461 and drive the inner rod 46 to move to the right. When the push block 451 moves to the left with the slide plate 44, the push block 451 is separated from the empty groove 461, and the push rod 45 is reset independently.

[0026] Specifically, a touch-sensitive switch 47 is fixedly connected to the inner side of the outer rod 41 . In an initial state, the inner rod 46 is at the leftmost position, and the inner rod 46 is in contact with the touch-sensitive switch 47 .

[0027] Specifically, the right end of the slide plate 44 is fixedly connected to the motor 42 , the end of the main shaft of the motor 42 is fixedly connected to the screw 43 , the other end of the screw 43 is rotatably connected to the inner side of the outer rod 41 , and the outer side of the screw 43 is spirally connected to the inner side of the slide plate 44 .

[0028] This embodiment also discloses a temperature control method for asphalt mixture construction, the steps of which are: S1: In the initial state, the baffle 7 is at the initial position of the asphalt concrete 1, and the telescopic rod 4 is at the shortest stroke position; S2: When the driving vehicle starts to move forward at a constant speed, the motor 42 rotates, and the rotation of the screw 43 forces the slide plate 44 to move rightward at a speed greater than that of the driving vehicle 3. The push block 451 moves rightward with the slide plate 44, and the push block 451 pushes against the empty slot 461 to drive the inner rod 46 to move rightward, causing the baffle 7 to rotate. , where n is the number of sides of the baffle 7, the outer support surface F between the baffles 7 rotates clockwise until the outer support surface F in the upper direction rotates downward and is in close contact with the surface of the asphalt concrete 1, and the push switch 10 is pressed down. At this time, the controller 15 controls the motor 42 to reverse, so that the push rod 45 is reset independently; S3: The driving vehicle 3 continues to move rightward at a constant speed on the surface of the asphalt concrete 1. At this time, the baffle 7 remains stationary to ensure that there is enough time for temperature collection. The inner rod 46 slides on the inner side of the outer rod 41 to perform distance compensation. S4: When the telescopic rod 4 is at the shortest stroke position, that is, the inner rod 46 is at the leftmost position, the inner rod 46 contacts the touch-sensitive switch 47, and the above steps S1-S3 are repeated, thereby realizing the temperature monitoring of the asphalt concrete 1 throughout the whole process; S5: When the temperature difference between the surfaces of the asphalt concrete 1 corresponding to the adjacent heat extraction plates 8 obtained by the thermocouple 12 is too large, the controller 15 controls the marking component 6 to mark the location, and subsequently lays the heat spreader 2 at the location where the temperature difference is too large, thereby reducing the cracking of the asphalt concrete 1 caused by the temperature difference.

[0029] Embodiment 3, as Figure 1-Figure 12 As shown, the heat extraction plate 8 in the present invention can also be interrupted by the third heat insulation strip 81 in the front-to-back direction. A thermocouple 12 can be set on the inner side of each partitioned heat extraction plate 8 for temperature monitoring, thereby realizing temperature monitoring in the front-to-back direction of the asphalt concrete 1. A GPS locator can be set at the right end of the connecting frame 5, and a storage device can be set on the controller 15. When it is detected that the temperature difference is too large, the position of the temperature difference is stored and marked to facilitate subsequent temperature compensation.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature control device for asphalt mixture construction, comprising a driving vehicle (3), a soaking plate (2) and a controller (15), characterized in that: The right end of the driving vehicle (3) is rotatably connected to a telescopic rod (4) via a hinge, the right movable end of the telescopic rod (4) is fixedly connected to a U-shaped connecting frame (5), the inner sides of both front and rear ends of the connecting frame (5) are rotatably connected to two coaxial baffles (7), the baffles (7) are provided with through holes (71), the baffles (7) are in the shape of regular polygons, a plurality of external support surfaces (F) are fixedly connected between two of the baffles (7), the external support surfaces (F) are in a flat state, a plurality of heat collecting plates (8) are arranged on the inner side of each external support surface (F), a second heat insulating strip (11) is provided between two adjacent heat collecting plates (8), a first heat insulating strip (9) is arranged at both ends of each external support surface (F), and a thermocouple (12) is fixedly connected to the surface of one side of the heat collecting plate (8) close to the center line of the baffle (7); The driving vehicle (3) moves rightward at a constant speed on the surface of the asphalt concrete (1), and the baffle (7) can be intermittently rotated to the right to move. During the rotation interval, the lowermost outer support surface (F) can be in close contact with the surface of the asphalt concrete (1), and the thermocouple (12) collects the temperature of the heat collecting plate (8) corresponding to the lower outer support surface (F), with a single heat collecting plate (8) as the width, thereby obtaining the temperature difference of the asphalt concrete (1) surface corresponding to adjacent heat collecting plates (8); The right end of the connecting frame (5) is fixedly connected to a marking component (6). When the temperature difference between the surfaces of the asphalt concrete (1) corresponding to the adjacent heat collecting plates (8) obtained by the thermocouple (12) is too large, the controller (15) controls the marking component (6) to mark the location, and subsequently, a soaking plate (2) is laid at the location where the temperature difference is too large, thereby reducing the cracking of the asphalt concrete (1) caused by the temperature difference.

2. The temperature control device for asphalt mixture construction according to claim 1 is characterized in that: The heat collecting plate (8) is made of a copper sheet or an aluminum sheet, and the marking component (6) is a sprayer, which is sprayed onto the road surface to serve as a mark.

3. The temperature control device for asphalt mixture construction according to claim 2 is characterized in that: A central axis (14) is fixedly connected between the center points of the two baffles (7), a support frame (13) is fixedly connected to the outside of the central axis (14), and the other end of the support frame (13) is fixedly connected to the first thermal insulation strip (9) or the second thermal insulation strip (11).

4. The temperature control device for asphalt mixture construction according to claim 3 is characterized in that: A push switch (10) is fixedly connected to the inner side of the second heat insulation strip (11), and when the outer support surface (F) on the lower side is in close contact with the surface of the asphalt concrete (1), the push switch (10) can be pressed down.

5. The temperature control device for asphalt mixture construction according to claim 4 is characterized in that: The telescopic rod (4) is a cylinder.

6. The temperature control device for asphalt mixture construction according to claim 4 is characterized in that: The telescopic rod (4) comprises an outer rod (41) and an inner rod (46), the inner rod (46) being the movable end of the telescopic rod (4), the inner side of the outer rod (41) being provided with a sliding groove and being slidably connected to a slide plate (44), the inner rod (46) sliding on the inner side of the outer rod (41), the right end of the slide plate (44) being fixedly connected to a push rod (45), the right end of the push rod (45) being fixedly connected to a push block (451), the left upper side of the inner rod (46) comprising an empty groove (461), when the push block (451) moves rightward following the slide plate (44), it can support the empty groove (461) and drive the inner rod (46) to move rightward, when the push block (451) moves leftward following the slide plate (44), the push block (451) is separated from the empty groove (461), and the push rod (45) is reset independently.

7. The temperature control device for asphalt mixture construction according to claim 6, characterized in that: A touch-sensitive switch (47) is fixedly connected to the inner side of the outer rod (41). In an initial state, the inner rod (46) is at the leftmost position, and the inner rod (46) is in contact with the touch-sensitive switch (47).

8. The temperature control device for asphalt mixture construction according to claim 7, characterized in that: The right end of the slide plate (44) is fixedly connected to a motor (42), the end of the main shaft of the motor (42) is fixedly connected to a screw rod (43), the other end of the screw rod (43) is rotatably connected to the inner side of the outer rod (41), and the outer side of the screw rod (43) is spirally connected to the inner side of the slide plate (44).

9. A temperature control method for asphalt mixture construction, characterized in that: Using the temperature control device as claimed in claim 5, the steps are: S1: in the initial state, the baffle (7) is at the initial position of the asphalt concrete (1), and the telescopic rod (4) is at the shortest stroke position; S2: When the driving vehicle starts to move forward at a constant speed, the telescopic rod (4) is rapidly extended at a speed greater than that of the driving vehicle (3), causing the baffle (7) to rotate. , where n is the number of sides of the baffle (7), the outer support surface (F) between the baffles (7) is rotated clockwise until the upper outer support surface (F) is rotated downward and closely adheres to the surface of the asphalt concrete (1), and the push switch (10) is pressed down; S3: the driving vehicle (3) continues to move rightward at a constant speed on the surface of the asphalt concrete (1), and the telescopic rod (4) gradually contracts to compensate, and the contraction speed can keep the baffle (7) relatively still, ensuring that there is sufficient time for temperature collection; S4: when the telescopic rod (4) is at the shortest stroke position, repeat the above steps S1 to S3, thereby achieving temperature monitoring of the asphalt concrete (1) throughout the entire process; S5: When the temperature difference between the surfaces of the asphalt concrete (1) corresponding to the adjacent heat collecting plates (8) obtained by the thermocouple (12) is too large, the controller (15) controls the marking component (6) to mark the location, and subsequently lays a heat spreader (2) at the location where the temperature difference is too large, thereby reducing the cracking of the asphalt concrete (1) caused by the temperature difference.

10. A temperature control method for asphalt mixture construction, characterized in that: Using the temperature control device as claimed in claim 8, the steps are: S1: in the initial state, the baffle (7) is at the initial position of the asphalt concrete (1), and the telescopic rod (4) is at the shortest stroke position; S2: When the driving vehicle starts to move forward at a constant speed, the motor (42) rotates, and the rotation of the screw (43) forces the slide plate (44) to move rightward at a speed greater than that of the driving vehicle (3). The push block (451) moves rightward following the slide plate (44). The push block (451) presses against the empty slot (461) to drive the inner rod (46) to move rightward, causing the baffle (7) to rotate. , where n is the number of sides of the baffle (7), the outer support surface (F) between the baffles (7) rotates clockwise until the upper outer support surface (F) rotates downward and is in close contact with the surface of the asphalt concrete (1), and the push switch (10) is pressed down. At this time, the controller (15) controls the motor (42) to reverse, so that the push rod (45) is reset independently; S3: The driving vehicle (3) continues to move rightward at a constant speed on the surface of the asphalt concrete (1). At this time, the baffle (7) remains stationary to ensure that there is sufficient time for temperature collection. The inner rod (46) slides on the inner side of the outer rod (41) to perform distance compensation. S4: When the telescopic rod (4) is at the shortest stroke position, that is, the inner rod (46) is at the leftmost position, the inner rod (46) contacts the touch-sensitive switch (47), and the above steps S1-S3 are repeated, thereby achieving temperature monitoring of the asphalt concrete (1) throughout the entire process; S5: When the temperature difference between the surfaces of the asphalt concrete (1) corresponding to the adjacent heat collecting plates (8) obtained by the thermocouple (12) is too large, the controller (15) controls the marking component (6) to mark the location, and subsequently lays a heat spreader (2) at the location where the temperature difference is too large, thereby reducing the cracking of the asphalt concrete (1) caused by the temperature difference.

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