CN106769635A - A kind of heat and mass experimental provision on adjustable microwave heated asphalt road surface - Google Patents

Abstract

The invention discloses an adjustable heat and mass transfer experimental device for microwave heating of asphalt pavement, which comprises a main frame and a microwave heating mechanism arranged in the main frame, and the experimental device also includes an electronic weighing instrument and a device for driving the The lifting movement of the weighing plate in the main frame is a lifting mechanism for adjusting the distance between the weighing plate and the microwave heating mechanism. The electronic weighing instrument is arranged on the main frame, and the weighing plate is connected with the electronic weighing instrument The measurement end face connection. The present invention ingeniously solves the problem of measuring the quality of the wet old asphalt material when it is being heated; by adjusting the vertical distance between the microwave heating mechanism and the weighing plate, not only the optimal heating distance can be obtained, but also the experimental device can Experimental research was carried out on different thicknesses of wet old asphalt materials.

Description

An adjustable heat and mass transfer experimental device for microwave heating of asphalt pavement

technical field

The invention belongs to the research technical field of heat and mass transfer of porous materials, and in particular relates to an adjustable heat and mass transfer experiment device for microwave heating asphalt pavement.

Background technique

With the rapid development of the economy, my country's highway construction has maintained a high-speed growth model, which also makes the road traffic between cities more and more convenient, and most of the road traffic is asphalt concrete pavement, because the asphalt concrete pavement It is easy to be damaged by various factors. In order to prevent secondary damage to the road surface, it is necessary to repair the damaged road surface in time. At present, the wet old asphalt road fabric produced by asphalt concrete road surface repair in my country is as high as tens of millions of tons every year. The secondary utilization of these wet old asphalt materials is imminent, so on-site thermal regeneration technology is widely used. The microwave heating technology uses microwaves as a heat source to place the wet old asphalt pavement waste in the microwave field. Due to the presence of moisture in the wet old asphalt pavement waste, the polar water molecules in the wet old asphalt pavement interact with each other under the action of microwaves. Movement, collision, generate heat, so that the wet old asphalt road fabric is heated. Due to the penetration of microwaves, the surface temperature of wet old asphalt pavement waste is not high during the heating process, but the internal and bottom temperatures are relatively high, and a large amount of water overflows from the bottom. It can be seen that microwave heating of wet old asphalt pavement waste is actually a process of heat and mass transfer.

At present, all countries are researching on-site thermal regeneration equipment for wet old asphalt pavement waste using microwaves, but there is no large amount of experimental research on the heat and mass transfer phenomenon existing in the process of microwave heating of wet old asphalt pavement waste. Therefore, there is a need for a heat and mass transfer experimental device for microwave heating of wet old asphalt pavement to study heat and mass transfer phenomena and their transfer principles. Because the magnetron used in the microwave heating process will also generate certain radiation when it generates microwaves, if the protection is not proper, it will cause radiation leakage and cause harm to the health of experimenters. And for the wet old asphalt pavement waste to be studied, due to the uncertain size and height of the area, this requires the heat and mass transfer experimental device to have strong practicability.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention provides an adjustable heat and mass transfer experimental device for microwave heating of asphalt pavement, the purpose of which is to facilitate the adjustment of the distance between the asphalt material and the microwave heating mechanism, and to measure the quality of the asphalt material at all times.

In order to achieve the above object, the technical scheme that the present invention takes is:

An adjustable heat and mass transfer experimental device for microwave heating of asphalt pavement, including a main frame, a microwave heating mechanism arranged in the main frame, the experimental device also includes an electronic weighing instrument and a The lifting movement of the weighing plate is used to adjust the distance between the weighing plate and the microwave heating mechanism. The electronic weighing instrument is set on the main frame, and the weighing plate is connected to the measuring end surface of the electronic weighing instrument through the lifting mechanism. .

The main frame includes a "["-shaped main body, a first support assembly disposed in the "["-shaped main body and a second support assembly disposed on the first support assembly. The first support assembly includes four first ribs, so The second support frame assembly includes four second ribs and four second connecting ribs, the four first ribs are connected to the inner wall of the upper plate of the "["-shaped main body, and the top ends of the four second ribs are respectively connected to the four second ribs. The bottom end of one rib is fixedly connected, the bottom end of the adjacent second rib is connected through the second connecting rib, and the upper end surface of the upper plate of the "["-shaped main body is provided with a groove for clamping the electronic weighing instrument.

Ribs are provided at the two right-angle bends of the "["-shaped main body. The ribs are right-angled triangle reinforcing ribs.

The cross sections of the first rib and the second rib are L-shaped structures.

The lifting mechanism is a gear lifting mechanism.

The gear lifting mechanism includes a bevel gear set, a screw slide block, a nut mounting block, a support plate, a transmission shaft arranged on the support plate, and a fixing device for supporting and guiding the horizontal movement of the transmission shaft and fixedly connected with the support plate. plate group, the measuring end face of the electronic weighing instrument is connected to the bottom end face of the support plate, the nut mounting block is fixedly connected to the weighing plate, and one end of the screw slider connected to the support plate is connected to the transmission shaft through the bevel gear set Connection, the other end of the screw slider is threaded with the nut mounting block.

The gear lifting mechanism also includes a height adjustment handle connected with one end of the transmission shaft.

The gear lifting mechanism also includes a motor drive mechanism for driving the transmission shaft to rotate.

The fixed plate group includes two fixed plates, both of which are fixed on the support plate, and the transmission shaft passes through the central holes of the two fixed plates and can rotate relative to the fixed plates.

There are two screw sliders and nut mounting blocks, the two nut mounting blocks are respectively connected to the two ends of the weighing plate, and the two screw sliders are respectively connected to the two ends of the support plate.

Both ends of the weighing plate are provided with fixed guide plates, the fixed guide plate is provided with a guide groove, the nut mounting block is fixedly connected with the fixed guide plate, and the screw slider moves up and down along the guide groove through rotation sports.

The microwave heating mechanism includes a radiation chamber, an excitation chamber and a magnetron detachably and fixedly connected to the excitation chamber, and the radiation chamber is welded to the excitation chamber. The radiation chamber is a pyramid-shaped horn-shaped heating chamber.

The experimental device also includes a blower mechanism for dissipating heat from the magnetron. The blowing mechanism is a fan.

The main frame is provided with a bearing plate carrying the microwave heating mechanism, and the bearing plate is connected to the main frame. The experimental device also includes a horizontal and vertical movement for adjusting the microwave heating mechanism to move horizontally and vertically along the plane where the bearing plate is located. Regulating mechanism.

The horizontal and vertical movement adjustment device comprises two first sliding guide rails, two second sliding guide rails and guide rail sliders arranged on the first sliding guide rails and the second sliding guide rails, and the two ends of the second sliding guide rails pass through the first sliding guide rails respectively. The installation block is connected with the guide rail sliders on the first sliding guide rail, and the two sides of the microwave heating mechanism are respectively connected with the guide rail sliders of the two second sliding guide rails through the second installation block.

At least one of the second sliding guide rails in the two second sliding guide rails is provided with two positioning blocks that can slide back and forth along the second sliding guide rail, and the two positioning blocks are respectively located on both sides of the guide rail slider of the second sliding guide rail and each positioning Blocks are provided with positioning bolts.

The bottom end of the main frame is provided with lockable scroll wheels.

The experimental device also includes a metal shielding device for the main frame of the housing.

Beneficial effects of the present invention: the present invention cleverly solves the quality measurement of the wet old asphalt material when it is being heated through the connection of the main frame, the electronic weighing instrument, and the gear lifting mechanism of the weighing plate; The vertical distance between the cone horn heating chamber and the weighing plate can not only obtain the best heating distance, but also enable this experimental device to conduct experimental research on wet old asphalt materials with different thicknesses; and the horizontal and vertical movement adjustment mechanism through the guide rail, The horizontal and vertical adjustments of the two microwave heating mechanisms connected to the slider can not only obtain the best coupling distance, but also enable this experimental device to conduct experimental research on wet old asphalt materials of different areas; the main The frame is designed in the shape of "[", which is convenient for the installation of other devices. Ribs are set inside it to increase the strength and ensure that the electronic weighing instrument can maintain a horizontal state; the addition of a small fan makes the magnetron in the process of generating microwaves In the process, heat dissipation can be continued to prevent the magnetron from being overheated and burned, reducing the cost of the experiment. The heat and mass transfer experimental device is simple in structure, perfect in function and easy to operate.

Description of drawings

This manual includes the following drawings, the contents shown are:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the front view of the present invention;

Fig. 3 is a side view of the present invention;

Fig. 4 is the front view of the gear lifting mechanism of the present invention;

Fig. 5 is a side view of the gear lifting mechanism of the present invention;

Fig. 6 is a front view of the horizontal and vertical movement adjustment mechanism of the present invention;

Fig. 7 is a side view of the horizontal and vertical movement adjustment mechanism of the present invention;

Fig. 8 is a top view of the horizontal and vertical movement adjustment mechanism of the present invention;

Fig. 9 is a front view of the microwave heating mechanism of the present invention;

Fig. 10 is a side view of the microwave heating mechanism of the present invention.

Labeled in the figure:

1. Metal shielding net, 2. Height adjustment handle, 3. Support plate, 4. Electronic weighing instrument, 5. Bevel gear set, 6. Upper rib plate, 7. Fan, 8. Loading plate, 9. Main frame, 10. Pyramid horn radiation chamber, 11. Lockable rolling wheel, 12. Weighing plate, 13. Lower rib, 14. Screw slider, 15. Second sliding guide rail, 16. First sliding guide rail, 17 , transmission shaft, 18, fixed plate, 19, wiring port, 20, first rib, 21, guide rail slider, 22, magnetron, 23, mounting hole, 24, nut mounting block, 25, excitation chamber, 26, The second rib, 27, the second connecting rib, 28, the fixed guide plate.

detailed description

The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.

As shown in Figures 1 to 10, the present invention specifically relates to an adjustable heat and mass transfer experimental device for microwave heating of asphalt pavement, which includes a main frame 9 and a microwave heating mechanism arranged in the main frame 9, and the experimental device also includes The electronic weighing instrument 4 and the lifting mechanism for driving the lifting movement of the weighing plate 12 arranged in the main frame 9 to adjust the distance between the weighing plate 12 and the microwave heating mechanism, the electronic weighing instrument 4 is arranged on the main frame 9 , the weighing plate 12 is connected to the measuring end surface of the electronic weighing instrument 4 through a lifting mechanism.

The main frame 9 is used for the installation of various mechanisms of the experimental device, so the main frame 9 needs to have good rigidity and strength, and stainless steel has good rigidity and strength, so the main frame 9 is processed by cutting and cutting stainless steel plates. The main frame 9 includes a "["-shaped main body, a first support assembly disposed in the "["-shaped main body, and a second support assembly disposed on the first support assembly. The first support assembly includes four first ribs 20, and the first support assembly includes four first ribs 20. The two support components include four second ribs 26 and four second connecting ribs 27, four first ribs 20 are connected with the inner wall of the upper plate of the "[" shape main body, and the top ends of the four second ribs 26 are respectively connected with four The bottom end of the first rib 20 is fixedly connected, the bottom end of the adjacent second rib 26 is connected by the second connecting rib 27, and the upper end surface of the upper plate body of the "[" shaped main body is provided with a concave hole for clamping the electronic weighing instrument 4 groove. The groove is set in the middle of the upper end surface of the upper plate of the "["-shaped main body. The electronic weighing instrument is positioned and fixed by snapping into the groove. A flexible sealing gasket can be provided in the groove. On the one hand, it has the function of buffering. On the one hand, the electronic weighing instrument can be snugly snapped into the groove to avoid shaking. Ribs are provided at the two right-angle bends of the "["-shaped main body. Respectively upper rib 6 and lower rib 13, upper rib and lower rib are right-angled triangle reinforcing ribs, so that the main frame 9 can not be bent or deformed under heavy weight. The main frame 9 is designed as a "[" shape to ensure that the weighing instrument 4 can maintain a horizontal state during the experiment. In order to further ensure the rigidity of the main frame 9, the electronic weighing instrument 4 is kept in a horizontal state. Inside the main frame 9 Some small beams are added, that is, the upper ribs 6 and the lower ribs 13, and are connected with the main frame 9 by welding. The cross sections of the first rib 20 and the second rib 26 are preferably L-shaped structures.

The upper end of the range sensor of the electronic weighing instrument is connected with the gear lifting mechanism, and the weighing plate 12 is connected through the gear lifting mechanism, and the electronic weighing instrument 4 measures the quality of the wet old asphalt road fabric placed on the weighing plate 12. When the wet old asphalt road fabric is not placed on the weighing plate 12, record the indication of the electronic weighing instrument 4 at this time, which is the total weight of the gear lifting mechanism and the weighing plate; then place the wet old asphalt material on the weighing plate on the weight plate 12, and then record the readings of the electronic weighing instrument 4 at this time, and calculate the quality of the wet old asphalt material through the difference between the readings before and after, and then use the microwave heating device to heat the asphalt road material. The polar water molecules inside the old asphalt road fabric rotate and collide with each other, and the water is transferred to the bottom, and the quality of the wet old asphalt road fabric changes further. The internal quality change of the asphalt road fabric can be obtained at any time through the electronic weighing instrument 4 .

Wherein, the lifting mechanism is a gear lifting mechanism. The gear lifting mechanism comprises a bevel gear set 5, a screw slide block 14, a nut mounting block 24, a support plate 3, a transmission set on the support plate 3, 17 and a support guide for the horizontal movement of the transmission shaft 17 and is connected with the support plate. Plate 3 is fixedly connected to the fixed plate group, the measuring end surface of the electronic weighing instrument 4 is connected with the bottom end surface of the supporting plate 3, and a card slot is set on the bottom end surface of the supporting plate, and the measuring end surface of the electronic weighing instrument is inserted into the card slot for positioning and fixing , a flexible gasket can also be set in this card slot, on the one hand, it has the function of buffering, on the other hand, it can make the measuring end face of the electronic weighing instrument fit into the card slot to avoid the phenomenon of shaking and detachment; it can also be fastened Fasten the measuring end face of the electronic weighing instrument with the support plate, or set a fixture that can clamp the measuring end face of the electronic weighing instrument, and detachably connect the fixture with the support plate through the cooperation of bolts and nuts; the nut mounting block 24 Fixedly connected with the weighing plate 12 , one end of the screw slider 14 connected to the support plate 12 is connected with the transmission shaft through the bevel gear set 5 , and the other end of the screw slider 14 is screwed with the nut mounting block 24 . In order to facilitate the rotation of the transmission shaft, a height adjustment handle 2 can be provided at one end of the transmission shaft, and the transmission shaft 17 is installed and positioned through the fixed plate 18. Through the coordinated rotation of the bevel gear set 5, the handle 2 can drive the horizontal rotation of the transmission shaft 17. , which is converted into the rotational movement of the screw slider 14, thereby driving the mounting block 24 to move up and down. The height adjustment of the heating platform is realized by turning the height adjustment handle 2, and the length of the screw slider 14 is long enough to make the adjustment range wider, which satisfies the research on the mass transfer law of wet and old asphalt pavement with various thicknesses. Of course, another way can also be used to realize the rotation of the transmission shaft. Specifically, the gear lifting mechanism also includes a motor drive mechanism, which is powered by a servo motor to drive the transmission shaft to rotate. At this time, it is installed on the transmission shaft 17. The bevel gear set 5 cooperates to drive the screw mandrel slider 14 to rotate in the vertical direction. When the screw mandrel slider 14 rotates, the nut mounting block 24 matched with it will drive the weighing plate 12 to realize the lifting motion. The motor drive mechanism is well known in the technical field, so it will not be described in detail here.

The fixed plate group includes two fixed plates 18, and the two fixed plates 18 are all fixed on the support plate, which can be fixed to both ends of the support plate. turn. There are two screw sliders 14 and two nut mounting blocks 24 , the two nut mounting blocks 24 are respectively connected to the two ends of the weighing plate 12 , and the two screw sliders 14 are respectively connected to the two ends of the support plate 12 . The way of connection can be welding, and fastening can also be carried out by fasteners. The two ends of weighing plate 12 are all provided with fixed guide plate 28, and fixed guide plate 28 is provided with guide groove, and nut mounting block 24 is fixedly connected with fixed guide plate 28, and lead screw slide block 14 moves along guide groove elevating by rotation.

The main frame 9 is provided with a bearing plate 8 carrying a microwave heating mechanism. The four ends of the bearing plate 8 are welded to the main frame. Specifically, a support block can be provided at the bottom end of the first rib, and the support block is fixedly connected to the first rib. The four ends of the plate 8 are fixed on the support block, and the way of fixed connection can be welding or fastened connection by fasteners; or the first rib and the second rib are also set into a "["-shaped integrated structure, and the "["-shaped The integrated structure or the setting of the support block is more convenient for the installation, connection and fixing of the bearing plate, and has better stability. The experimental device also includes a horizontal and vertical movement adjustment mechanism for adjusting the horizontal and vertical movement of the microwave heating mechanism along the plane where the bearing plate 8 is located.

The horizontal and vertical movement adjustment mechanism comprises two first sliding guide rails 16, two second sliding guide rails 15 and a guide rail slide block 21 arranged on the first sliding guide rails 16 and the second sliding guide rails 15, and the two ends of the second sliding guide rails 15 The first mounting blocks are respectively connected to the rail sliders on the first sliding guide rail 16, and the two sides of the microwave heating mechanism are respectively connected to the rail sliders of the two second sliding guide rails 15 through the second mounting blocks. Countersunk holes are drilled at both ends and in the middle of the first sliding guide rail, and the first sliding guide rail is directly mounted horizontally on the bearing plate through the countersink holes, so that the screws can be "embedded" in the sliding guide rail without affecting the first sliding guide rail The guide rail slider slides on the first sliding guide rail. The connection between the second sliding guide rail and the second mounting block can also be realized by screws. The horizontal and vertical adjustment of the microwave heating device can be realized through the cooperative action of the guide rail slider on the first sliding guide rail and the second sliding guide rail. When setting, the first sliding guide rail can be set as a horizontal sliding guide rail, and the second sliding guide rail can be set as a longitudinal As for the sliding guide rail, the length of the first sliding guide rail can be set to be greater than the length of the second sliding guide rail. The installation between the microwave heating mechanism and the second sliding guide rail, and the installation between the second sliding guide rail and the first sliding guide rail are all installed indirectly using the installation block, because the size difference between them cannot be directly installed, and at the same time , In the process of repeated installation and disassembly, the sliding guide rail or the heating chamber of the microwave heating mechanism may be damaged, and it is more convenient and low-cost to replace it with an installation block. The horizontal and vertical movement of the device is realized by the cooperative movement of the sliding guide rails perpendicular to each other in space, which provides a good control basis for the optimal coupling between adjacent heating chambers. At least one of the second sliding guide rails in the two second sliding guide rails is provided with two positioning blocks that can slide back and forth along the second sliding guide rail, and the two positioning blocks are respectively located on both sides of the guide rail slider of the second sliding guide rail and each positioning Positioning bolts are arranged on the blocks, and the microwave heating device is fixed and positioned by adjusting the positioning bolts so that the two positioning blocks and the second sliding guide rail are fixedly constrained.

The microwave heating mechanism includes a radiation chamber, an excitation chamber 25 and a magnetron 22 detachably and fixedly connected to the excitation chamber 25 , and the radiation chamber is welded to the excitation chamber 25 . The radiation chamber and the excitation chamber together constitute a heating chamber, and the radiation chamber is preferably a pyramid-shaped horn-shaped heating chamber 10 . The end of the magnetron 22 away from the radiation cavity is provided with a wiring port 19; the two sides of the pyramid horn radiation cavity 10 near the end of the magnetron 22 are connected to the guide rail sliders 21 on the two second sliding guide rails 15 through mounting blocks. The top of the pyramidal horn radiation chamber 10 is drilled with a mounting hole 23, and the mounting hole 23 is matched with the mounting hole of the magnetron 22, and bolts are installed between the two. After the connection port 19 is connected to the high-voltage power supply, the magnetron 22 emits microwaves, which are enhanced by the excitation cavity 25 and the pyramid horn radiation cavity 10 to generate a high-frequency alternating microwave field, and microwave heating is to turn the wet old asphalt road fabric As a dielectric material, it is placed in the high-frequency alternating microwave field generated by the pyramid horn radiation cavity 10. Under the action of microwaves, the polar water molecules inside the asphalt road fabric rotate and rub at high speed, thereby generating a large amount of heat. In this way, the heating of the wet old asphalt road fabric can be realized. It can be seen from the side view of the microwave heating mechanism in Figure 10 that the radiation cavity 10 is designed in the shape of a pyramidal horn. According to Huygens' principle, the pyramidal horn-shaped structure can be used as a microwave transmission line to transmit microwaves and generate high-frequency electromagnetic waves of desired modes. , can also improve the radiation efficiency of electromagnetic waves. At the same time, the shape of the pyramid horn is convenient to adjust the angle between the H surface and the E surface and the ground, and it is convenient to design different shapes of the pyramid horn heating chamber for experimental comparison. When the installation of the experimental device was completed, after the high-voltage power supply of the connection port 19 of the magnetron 22 was connected, the magnetron 22 began to generate microwaves. It is continuously conveyed to the bottom of the asphalt road fabric, so the quality is constantly changing, forming a mass transfer process. Through the electronic weighing instrument 4, the internal quality change of the wet old asphalt material can be obtained at any time, and the mass transfer process is studied. .

In order to solve the problem that when a single heating chamber heats the wet old asphalt pavement, the internal polar water molecules at the edge cannot be heated, two heating chambers are used to heat at the same time to expand the heating area, and at the same time, the horizontal and vertical movement adjustment mechanism is used to adjust the temperature of the two heating chambers. The horizontal and vertical horizontal adjustments are made between the heating chambers, and the horizontal distance between the two heating chambers is controlled to adjust the distance between the two heating chambers to obtain the best coupling relationship, so that the polar molecules inside the wet old asphalt road fabric can Rapid rotation and friction generate heat for heating, and the temperature of the wet old asphalt material surface is measured at all times during the heating process by an infrared thermometer. In addition, the experimental device also includes a blower mechanism for cooling the magnetron. Blowing mechanism is fan 7. The fan is fixedly mounted on the second mounting block by tightening screws, so that the magnetron can continuously dissipate heat during the process of generating microwaves, preventing the magnetron from being overheated and being burned, and reducing the cost of the experiment.

In order to make the whole heat and mass transfer experimental device easy to transport and keep the main frame level during the experiment, four lockable rolling wheels 11 of the same type are designed at the bottom of the main frame 9 . The lockable rolling wheel 11 includes a coaxially installed metal locking pedal, which controls the rotation and stop of the locking rolling wheel by stepping on and loosening the metal locking pedal. The lockable scroll wheel 11 can freely rotate in the axial direction, which satisfies the movement and position adjustment during the experiment.

The outside of the main frame 9 is wrapped by a metal shielding device, and the metal shielding device can adopt a metal shielding net 1. When the heat and mass transfer experimental device starts to work, the magnetron 22 will generate a large amount of microwaves to heat the wet old asphalt road fabric, The main function of the metal shielding net 1 is to shield some microwave radiation leaked from the heat and mass transfer experimental device, so as to prevent the microwave radiation from harming the health of the experimenters. The metal shielding device 1 is mainly composed of four supporting frames and eight L-shaped metal plates, and each of the four L-shaped metal plates is connected by screws to form two sets of frames on the top surface and the bottom surface for detachable installation. Specifically, in order to make the connection between the support frame and the upper and lower frames stable enough, two bolt fasteners are used to connect the support frame with the top and bottom frames. The use of bolt fasteners makes the connection strength stronger. At the same time, it can prevent the rotation between the two and affect the shielding effect of the metal shielding device 1 on microwave radiation; the top frame is designed as a rectangle according to the area of the main frame, and is supported by four support frames. This connection method is not only convenient , and the use of bolt fasteners makes the overall metal shielding device more stable, and can achieve the strength and stability required by the target.

The invention realizes the horizontal and vertical adjustment of the horizontal plane of the heating chamber through the first and second sliding guide rails and the guide rail sliders installed on them; at the same time, through the gear lifting mechanism, the height adjustment handle is turned to drive the weighing plate to adjust the heating chamber and the weighing plate. The distance between the weighing plates can be adjusted in height. It has a large adjustment range and strong adaptability, and can adapt to the research on heat and mass transfer of wet old asphalt pavements with different heights and irregular heights; Research on mass transfer experiment of wet and old asphalt pavement; research on heat transfer experiment of wet and old asphalt pavement through magnetron and heating chamber.

The present invention has been exemplarily described above with reference to the accompanying drawings. Apparently, the specific implementation of the present invention is not limited by the above methods. As long as various insubstantial improvements are made using the method concept and technical solution of the present invention; or without improvement, the above-mentioned concept and technical solution of the present invention are directly applied to other occasions, all within the protection scope of the present invention within.

Claims (10)

1. a kind of heat and mass experimental provision on adjustable microwave heated asphalt road surface, including main frame, in main frame Heating using microwave mechanism, it is characterised in that：The experimental provision also includes electronic weighing instrument and for driving in main frame Weighing plate elevating movement is adjusted the elevating mechanism of distance between weighing plate and heating using microwave mechanism, and the electronic weighing instrument sets In on main frame, the weighing plate is connected by elevating mechanism with the measurement end face of electronic weighing instrument.

2. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 1, it is characterised in that：Institute Elevating mechanism is stated for gear elevator structure.

3. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 2, it is characterised in that：Institute State gear elevator structure including bevel gear set, screw mandrel sliding block, nut mounting blocks, supporting plate, the power transmission shaft in supporting plate and For being supported the fixed plate group for being oriented to and being fixedly connected with supporting plate, the electronic-weighing to power transmission shaft horizontal motion The measurement end face of instrument is connected with the bottom face of supporting plate, and the nut mounting blocks are fixedly connected with weighing plate, the screw mandrel sliding block The one end for connecting supporting plate is connected by bevel gear set with power transmission shaft, and the other end and the nut mounting blocks screw thread of screw mandrel sliding block connect Connect.

4. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 3, it is characterised in that：Institute State screw mandrel sliding block and nut mounting blocks are two, two nut mounting blocks are connected with the two ends of weighing plate respectively, two screw mandrels Sliding block is connected with the two ends of supporting plate respectively.

5. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 4, it is characterised in that：Institute The two ends for stating weighing plate are equipped with fixed guide plate, are provided with gathering sill in the fixed guide plate, the nut mounting blocks with it is solid Determine guide plate to be fixedly connected, the screw mandrel sliding block is by rotating along gathering sill elevating movement.

6. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 1, it is characterised in that：Institute Heating using microwave mechanism is stated including radial chamber, excitation cavity and being detachably fixed the magnetron being connected with excitation cavity, the radial chamber with Excitation cavity is welded to connect.

7. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 6, it is characterised in that：Institute Stating experimental provision also includes the blower mechanism radiated to magnetron.

8. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 1, it is characterised in that：Institute The loading plate for being provided with main frame and carrying heating using microwave mechanism is stated, the loading plate is connected with main frame, and the experimental provision is also Including moving governor motion along the transverse and longitudinal that plane where loading plate carries out horizontal, lengthwise movement for adjusting heating using microwave mechanism.

9. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 8, it is characterised in that：Institute State transverse and longitudinal movement adjusting means include two the first rail plates, two the second rail plates and located at the first rail plate with Guide rail slide block on second rail plate, the two ends of the second rail plate are respectively by the first mounting blocks and the first rail plate Guide rail slide block connection, two avris of heating using microwave mechanism pass through the second mounting blocks and two guide rails of the second rail plate respectively Sliding block is connected.

10. the heat and mass experimental provision on adjustable microwave heated asphalt road surface according to claim 1, it is characterised in that： The experimental provision also includes the metal shielding setup for outer cover main frame.