CN108265590B - Hydraulic control system of microwave heating asphalt pavement in-situ heat regeneration device - Google Patents
Hydraulic control system of microwave heating asphalt pavement in-situ heat regeneration device Download PDFInfo
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- CN108265590B CN108265590B CN201810204023.2A CN201810204023A CN108265590B CN 108265590 B CN108265590 B CN 108265590B CN 201810204023 A CN201810204023 A CN 201810204023A CN 108265590 B CN108265590 B CN 108265590B
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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
- E01C19/02—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 preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention discloses a hydraulic control system of a microwave heating asphalt pavement in-place heat regeneration device, which comprises a main frame, a space adjusting device and a heating device, wherein a universal wheel with a lock is arranged at the bottom of the main frame, the space adjusting device comprises three independent groups of three-way electric drive adjusting structures, and each group of three-way electric drive adjusting structures is connected with one group of heating device. The hydraulic control system takes the hydraulic pump as a power source, and adopts the hydraulic control system to realize the movement control of the heating cavity along the X axis, the Y axis and the z axis, thereby simplifying the manual complicated operation and reducing the labor intensity of workers. Meanwhile, the influence of experience, physical strength and the like on the microwave heating effect in the process of manually adjusting the heating cavity is avoided, and the fact that the mouth surfaces of different heating cavities are always kept at the same horizontal plane is ensured, so that the optimal coupling effect can be always achieved.
Description
Technical Field
The invention belongs to the technical field of microwave thermal regeneration of asphalt pavement, and particularly relates to a hydraulic control system of an in-situ thermal regeneration device for heating the asphalt pavement by microwaves.
Background
In recent years, asphalt concrete has been widely used in expressway construction by virtue of its excellent road performance and stable quality of use, with the vigorous development of highway traffic construction industry. By 2012, china has had more than 400 kilometers of road construction traffic, wherein an asphalt concrete pavement is a major highway pavement and a minor highway pavement is 9.5 kilometers, which is second only to the United states and the second in the world, and the asphalt concrete pavement is a major structural form of the China highway pavement. The expressway of the asphalt pavement is built in China beginning to the 80 th century, and the common design life of the asphalt pavement is 15 years to 20 years. Therefore, the expressway of the asphalt pavement built later in China enters a large and medium maintenance period in the bottom of 90 s, however, the in-situ heat regeneration technology of the waste asphalt concrete is not completely mature in China at present.
The asphalt pavement heat regeneration method comprises two kinds of plant heat regeneration and in-situ heat regeneration. The plant-mixed thermal regeneration is to transport the waste asphalt mixture to a mixing plant, then crush the waste asphalt mixture, add a certain proportion of regenerant, new aggregate or new asphalt mixture, and the like for fully mixing to obtain regenerated asphalt concrete with excellent performance and meeting the road performance, and re-compact the regenerated asphalt concrete into a regenerated new asphalt pavement. In-situ heat regeneration of asphalt pavement is to perform in-situ heating on damaged asphalt pavement by adopting an in-situ heat regeneration device, mill and plane softened waste asphalt concrete, then mix new asphalt mixture and asphalt regenerant with a certain proportion in situ, and perform multiple construction procedures such as heat mixing, paving ironing and rolling of in-situ heat regeneration equipment to repair and regenerate the damaged asphalt pavement at one time. The in-situ heat regeneration has the advantages of compact flow, simple working procedure, good road surface maintenance quality and the like, and is widely applied to the maintenance and the maintenance of waste asphalt road surfaces.
The related research of the in-situ heat regeneration technology of the asphalt pavement in China is relatively late in starting, and the in-situ heat regeneration technology of the asphalt pavement is gradually and widely paid attention to after 21 st century, is improved along with the domestic continuous introduction of a plurality of foreign heat regeneration equipment of the asphalt pavement, and is successfully applied to the maintenance of the asphalt pavement, so that the in-situ heat regeneration technology of the asphalt pavement is gradually approved. Asphalt pavement in-situ heat regeneration technology is still in a starting stage in China, and compared with other developed countries, the technology has yet to be studied intensively.
Therefore, there is a need for a microwave heated asphalt pavement in-situ thermal reclamation apparatus to maintain asphalt pavement. At present, most of microwave heating devices used on the road surface cannot realize space position control of the heating device, are difficult to quickly heat some complex road surfaces, and have low heating efficiency. Therefore, it is necessary to design an in-situ heat regenerating device for heating an asphalt pavement by microwaves in consideration of the shape, size, etc. of the damaged asphalt pavement. Meanwhile, in order to prevent leakage of electromagnetic waves emitted by the magnetron, the leakage electromagnetic waves need to be shielded, and the shielding device is conveniently installed on the microwave heating asphalt pavement in-situ heat regeneration device as much as possible.
Disclosure of Invention
The invention aims to: aiming at the prior art, the hydraulic control system of the microwave heating asphalt pavement in-situ heat regeneration device is provided, so that the control of the microwave heating asphalt pavement in-situ heat regeneration device is realized, and the positioning accuracy and the heating efficiency of the radiation cavity are improved.
The technical scheme is as follows: the hydraulic control system of the microwave heating asphalt pavement in-situ heat regeneration device comprises a main frame, a space adjusting device and a heating device; the whole outer side of the main frame is provided with a metal shielding net, and the bottom of the main frame is provided with a universal wheel with a lock; the top of the main frame comprises two first sliding guide rails which are parallel to each other, one end of one sliding guide rail is taken as an origin O to establish a coordinate system, a straight line where the sliding guide rail is positioned is taken as an X axis, a Y axis is perpendicular to the X axis and is positioned on the same horizontal plane with the X axis, and a Z axis is perpendicular to an XOY plane;
the heating device and the space adjusting device respectively comprise three groups, each group of space adjusting device comprises a second sliding guide rail which is bridged on the first sliding guide rail and slides along the X axis through a first guide rail sliding block, a second guide rail sliding block which slides along the Y axis is arranged on the second sliding guide rail, and the side surface of the second guide rail sliding block is connected with a vertical lifting mechanism; the bottom of the vertical lifting mechanism is connected with a group of heating devices, and a temperature sensor is arranged at the joint; the first sliding guide rail is provided with an X-axis hydraulic pump for driving the first guide rail slide block, and the second sliding guide rail is provided with a Y-axis hydraulic pump for driving the second guide rail slide block; the vertical lifting mechanism comprises a Z-axis hydraulic pump;
each group of heating devices comprises two microwave heaters which are arranged in parallel along a Y axis, each microwave heater comprises a pyramid horn-shaped radiation cavity and an excitation cavity connected with the radiation cavity, one group of opposite side walls of the excitation cavity are formed by magnetrons, and the other group of opposite side walls of the excitation cavity are respectively provided with a wiring port of the magnetrons and a cooling fan of the excitation cavity; each group of heating device further comprises a support, two third sliding guide rails are fixed on the support in parallel along the Y axis, two fourth sliding guide rails which are arranged in parallel are bridged on the third sliding guide rails, and the fourth sliding guide rails are connected with the third sliding guide rails in a sliding manner through third guide rail sliding blocks; each microwave heater is connected with the fourth sliding guide rail in a sliding way through a fourth guide rail sliding block with two fixed side surfaces;
the hydraulic control system comprises a plunger pump, a two-position four-way electromagnetic valve, an overflow valve, a pressure reducing valve, a first three-position four-way electromagnetic valve, a second three-position four-way electromagnetic valve, a third three-position four-way electromagnetic valve, a first bidirectional hydraulic control one-way valve, a second bidirectional hydraulic control one-way valve, a third bidirectional hydraulic control one-way valve, a first one-way throttle valve, a second one-way throttle valve, a third one-way throttle valve, a first pressure relay, a first energy accumulator, a second pressure relay and a motor;
the motor drives the plunger pump to absorb oil from the oil cylinder, an oil outlet of the plunger pump is connected with an overflow valve, a pressure reducing valve, a third three-position four-way electromagnetic valve and an oil inlet of the third three-position four-way electromagnetic valve through pipelines, and an oil outlet of the overflow valve is connected with the oil cylinder; the two working ports of the two-position four-way electromagnetic valve are respectively connected with the oil inlet and the oil outlet of the overflow valve, and the oil inlet and the oil return port of the two-position four-way electromagnetic valve are connected into a loop; the oil inlets of the first three-position four-way electromagnetic valve and the second three-position four-way electromagnetic valve are respectively connected with the oil outlets of the pressure reducing valve; the two working ports of the first three-position four-way electromagnetic valve are connected with the first bidirectional hydraulic control one-way valve, the first bidirectional hydraulic control one-way valve is respectively connected with a first oil inlet and outlet and a second oil inlet and outlet of the X-axis hydraulic pump through two first one-way throttle valves, the first energy accumulator is connected with the first oil inlet and outlet of the X-axis hydraulic pump, and the first pressure relay is connected with the first energy accumulator; the two working ports of the second three-position four-way electromagnetic valve are connected with the second bidirectional hydraulic control one-way valve, the second bidirectional hydraulic control one-way valve is respectively connected with a first oil inlet and an oil outlet of the Y-axis hydraulic pump and a second oil inlet and an oil outlet of the Y-axis hydraulic pump through two second one-way throttle valves, the second energy accumulator is connected with the first oil inlet and the oil outlet of the Y-axis hydraulic pump, and the second pressure relay is connected with the second energy accumulator; the two working ports of the third three-position four-way solenoid valve are connected with the third bidirectional hydraulic control one-way valve, and the third bidirectional hydraulic control one-way valve is respectively connected with the first oil inlet and the second oil outlet of the Z-axis hydraulic pump through two third one-way throttle valves.
Further, the vertical lifting mechanism comprises an installation seat fixed on the side surface of the second guide rail sliding block, a vertical through hole is formed in the installation seat, and a thrust bearing is arranged in the vertical through hole; the Z-axis hydraulic pump is vertically arranged, a piston rod of the Z-axis hydraulic pump passes through the thrust bearing, the end part of a cylinder body of the Z-axis hydraulic pump is contacted with a flat-bottom seat ring of the thrust bearing, and the bottom of the mounting seat is provided with the piston rod clamping structure; the lower end of the piston rod is provided with a lantern ring, the lantern ring is fixed on the piston rod through a limit screw, the side surface of the lantern ring is vertically and fixedly connected with an L-shaped connecting plate, and the bottom end of the L-shaped connecting plate is connected with the heating device.
Further, limiting structures are arranged on the third guide rail sliding block and the fourth guide rail sliding block.
Further, the hydraulic pump fixing device further comprises a fixing support, wherein the fixing support comprises a base and a lantern ring which are fixedly connected with each other, the lantern ring is sleeved on the cylinder body of the Z-axis hydraulic pump, and the base of the fixing support is fixed on the mounting seat.
Further, an oil inlet of the plunger pump is connected with a filter.
The beneficial effects are that: according to the invention, the hydraulic pump is used as a power source, and the hydraulic control system is adopted, so that the movement control of the heating cavity along the X axis, the Y axis and the z axis is realized, the manual complicated operation is simplified, and the labor intensity of workers is reduced. Meanwhile, the influence of experience, physical strength and the like on the microwave heating effect in the process of manually adjusting the heating cavity is avoided, and the fact that the mouth surfaces of different heating cavities are always kept at the same horizontal plane is ensured, so that the optimal coupling effect can be always achieved.
Drawings
FIG. 1 is a schematic diagram of an in-situ thermal regeneration device for heating asphalt pavement by microwaves;
FIG. 2 is an elevation view of an in-situ thermal recycling apparatus for microwave heating asphalt pavement in accordance with the present invention;
FIG. 3 is a side view of an in-situ thermal recycling apparatus for microwave heated asphalt pavement in accordance with the present invention;
FIG. 4 is a schematic view of the vertical lift mechanism of the heating apparatus;
FIG. 5 is a schematic diagram of a heating unit set in a microwave heated asphalt pavement in-situ thermal regeneration device;
FIG. 6 is a schematic view of the mounting structure of the magnetron and the radiation chamber in the heating apparatus;
FIG. 7 is a schematic diagram of the hydraulic control system of the present invention;
FIG. 8 is a schematic diagram of a set of heating devices coupled to heat;
fig. 9 is a simulation diagram of coupling of a radiation cavity, wherein (a) is a simulation diagram of coupling of a radiation cavity with a distance of 0 between H surfaces, (b) is a simulation diagram of coupling of a radiation cavity with a distance of 10mm between H surfaces, and (c) is a simulation diagram of coupling of a radiation cavity with a distance of 20mm between H surfaces.
Description of the embodiments
The invention is further explained below with reference to the drawings.
The hydraulic control system of the microwave heating asphalt pavement in-situ heat regeneration device comprises a main frame, a space adjusting device and a heating device, wherein the hydraulic control system is shown in fig. 1-3. The main frame 1 is used for bearing all heating devices and space adjusting devices, bears most weight, and therefore, steel plates are used as manufacturing materials, and the main frame which uses steel materials as casting materials has enough bearing rigidity and bearing strength, so that the situation of compression deformation does not occur. The whole outside of main frame is equipped with metal shielding net, and the universal wheel 3 of area lock is installed to main frame bottom. The top of the main frame comprises two first sliding guide rails 8 which are parallel to each other, a coordinate system is established by taking one end of one sliding guide rail as an origin O, a straight line where the sliding guide rail is positioned is taken as an X axis, a Y axis is perpendicular to the X axis and is positioned on the same horizontal plane with the X axis, and a Z axis is perpendicular to an XOY plane.
The heating device and the space adjusting device respectively comprise three groups, each group of space adjusting device comprises a second sliding guide rail 11 which is bridged on the first sliding guide rail 8 and slides along the X axis through a first guide rail sliding block 9, a second guide rail sliding block 10 which slides along the Y axis is arranged on the second sliding guide rail, and the side surface of the second guide rail sliding block 10 is connected with a vertical lifting mechanism. The bottom of the vertical lifting mechanism is connected with a group of heating devices, and a temperature sensor 12 is arranged at the connection part. The first sliding guide rail 8 is provided with an X-axis hydraulic pump 17 for driving the first guide rail slide block 9, the second sliding guide rail 11 is provided with a Y-axis hydraulic pump 19 for driving the second guide rail slide block 10, and the vertical lifting mechanism comprises a Z-axis hydraulic pump 18.
As shown in fig. 4, the vertical lifting mechanism comprises a mounting seat 10 fixed on the side surface of the second guide rail sliding block, a vertical through hole is formed in the mounting seat 10, and a thrust bearing is arranged in the vertical through hole. The Z-axis hydraulic pump 18 is vertically arranged, a piston rod of the Z-axis hydraulic pump passes through the thrust bearing, the end part of the cylinder body of the Z-axis hydraulic pump is contacted with a flat bottom seat ring of the thrust bearing, and a piston rod clamping structure is arranged at the bottom of the mounting seat 10. The hydraulic pump further comprises a fixing support 25, wherein the fixing support 25 comprises a base and a lantern ring which are fixedly connected with each other, the lantern ring is sleeved on a cylinder body of the Z-axis hydraulic pump 18, and the base of the fixing support 25 is fixed on the mounting seat 10. The lower end of the piston rod is provided with a lantern ring 24, the lantern ring 24 is fixed on the piston rod through a limit screw, the side surface of the lantern ring 24 is vertically and fixedly connected with an L-shaped connecting plate 7, and the bottom end of the L-shaped connecting plate 7 is connected with a heating device. The working principle is that the Z-axis hydraulic pump cylinder body acts on a flat base ring of a thrust bearing capable of bearing force in the axial direction, and a piston rod penetrating through a vertical through hole of the mounting seat 10 drives an L-shaped connecting plate 7 connected with the end part of the Z-axis hydraulic pump cylinder body to move along the Z axis. The L-shaped connecting plate 7 is connected with the lantern ring 24 through the screw 23, and according to the actual height, the position of the L-shaped connecting plate 7 connected with the piston rod can be adjusted through the limit screw on the lantern ring 24. The cylinders are connected by thrust bearings to facilitate adjustment of the horizontal angle of the connected heating device by rotating the Z-axis hydraulic pump 18, thereby providing a better coupling effect when accommodating some specific heating areas. In order to prevent the Z-axis hydraulic pump 18 from rotating freely in the horizontal direction, rotation is restricted by a piston rod clamping structure at the bottom of the mount 10 and a bracket 25 attached to the cylinder.
As shown in fig. 6, each set of heating means comprises two microwave heaters arranged in parallel along the Y-axis, each microwave heater comprising a pyramid-shaped radiating cavity 4 and an excitation cavity 26 connecting the radiating cavities. One set of opposite side walls of the excitation chamber 26 is formed by the magnetron 6, and the other set of opposite side walls of the excitation chamber are respectively provided with a wiring port 28 of the magnetron and a heat dissipation fan 5 of the excitation chamber. As shown in fig. 5, each group of heating devices further includes a support 22, two third sliding guide rails 21 are fixed on the support 22 in parallel along the Y axis, two fourth sliding guide rails 15 are connected on the third sliding guide rails 21 in a bridging manner, and the fourth sliding guide rails 15 are slidably connected with the third sliding guide rails 21 through third guide rail sliding blocks 20. Each microwave heater is in sliding connection with a fourth sliding guide rail 15 through a fourth guide rail slide block 14 with two fixed side surfaces. And the third guide rail slide block 20 and the fourth guide rail slide block 14 are provided with limiting structures for fixing the relative positions of the guide rail slide block and the sliding guide rail.
The sensor 12 will generate a resistance effect under the influence of the temperature generated by the magnetron below, and a differential voltage signal is generated through the conversion of the internal processing unit, and the signal is converted into a standard analog signal or a digital signal through an amplifier according to the measuring range, so that the real-time monitoring of the temperature of the asphalt pavement is realized.
In order to enable the whole device to carry out thermal regeneration on the damaged pavement conveniently on site, the universal wheels with the locks are designed below the main frame of the device, so that the device is convenient to move, and meanwhile, when the damaged asphalt pavement with a certain inclination is repaired on site, the universal wheels are locked, so that the device is prevented from moving and deviating from the damaged pavement to be repaired when the on-site thermal regeneration repair is carried out.
As shown in fig. 7, the hydraulic control system includes a plunger pump 102, a two-position four-way solenoid valve 103, an overflow valve 104, a pressure reducing valve 105, a first three-position four-way solenoid valve 106, a second three-position four-way solenoid valve 107, a third three-position four-way solenoid valve 108, a first bidirectional pilot operated check valve 109, a second bidirectional pilot operated check valve 110, a third bidirectional pilot operated check valve 111, a first one-way throttle valve 112, a second one-way throttle valve 113, a third one-way throttle valve 114, a first pressure relay 115, a first accumulator 116, a second accumulator 119, a second pressure relay 120, and a motor 122.
The motor 122 drives the plunger pump 102 to absorb oil from the oil cylinder, and an oil outlet of the plunger pump 102 is connected with the overflow valve 104, the pressure reducing valve 105, the third three-position four-way electromagnetic valve 108 and an oil inlet of the third three-position four-way electromagnetic valve 108 through pipelines, and an oil outlet of the overflow valve 104 is connected with the oil cylinder. Two working ports of the two-position four-way electromagnetic valve 103 are respectively connected with an oil inlet and an oil outlet of the overflow valve 104, and the oil inlet and the oil return port of the two-position four-way electromagnetic valve 103 are connected into a loop. The oil inlets of the first three-position four-way electromagnetic valve 106 and the second three-position four-way electromagnetic valve 107 are respectively connected with the oil outlets of the pressure reducing valve 105. The two working ports of the first three-position four-way electromagnetic valve 106 are connected with a first bidirectional hydraulic control one-way valve 109, the first bidirectional hydraulic control one-way valve 109 is respectively connected with a first oil inlet and outlet and a second oil inlet and outlet of the X-axis hydraulic pump 17 through two first one-way throttle valves 112, a first energy accumulator 116 is connected with the first oil inlet and outlet of the X-axis hydraulic pump 17, and a first pressure relay 115 is connected with the first energy accumulator 116. The two working ports of the second three-position four-way electromagnetic valve 107 are connected with a second bidirectional hydraulic control one-way valve 110, the second bidirectional hydraulic control one-way valve 110 is respectively connected with a first oil inlet and an oil outlet of the Y-axis hydraulic pump 19 through two second one-way throttle valves 113, a second energy accumulator 119 is connected with the first oil inlet and the oil outlet of the Y-axis hydraulic pump 19, and a second pressure relay 120 is connected with the second energy accumulator 119. The two working ports of the third three-position four-way solenoid valve 108 are connected with a third bidirectional hydraulic control one-way valve 111, and the third bidirectional hydraulic control one-way valve 111 is respectively connected with a first oil inlet and an oil outlet of the Z-axis hydraulic pump 18 and a second oil inlet and an oil outlet through two third one-way throttle valves 114.
In the hydraulic control system, the plunger pump 102 is connected with the motor 122 through a coupling, and the motor 122 provides mechanical energy for the plunger pump 102 to absorb oil from the oil cylinder so as to supply oil for the system. The pump oil supply is used to control the operation of the entire hydraulic system via relief valve 104, relief valve 105. The three bidirectional hydraulic control check valves are arranged side by side and are used for locking, so that the operation synchronization of the regulating system is ensured. The first one-way throttle valve 112, the second one-way throttle valve 113 and the third one-way throttle valve 114 are used for controlling the expansion speed of each hydraulic pump, so that the expansion speed is high and the contraction speed is low.
Some pollutants, such as dust, metal falling off from the surfaces of parts in the system and the like, are inevitably present in the hydraulic oil, and the pollutants can cause great damage to hydraulic elements. An oil suction filter 101 is arranged between the plunger pump 102 and the oil cylinder, and the filter 101 can effectively ensure that the oil fed into the system is clean and reliable, which is also beneficial to the long-time stable operation of the system. The overflow valve 104 between the two-position four-way solenoid valve 103 and the pressure reducing valve 105 can control the running speed of the whole system. A pressure measuring component is connected between the overflow valve 104 and the two-position four-way electromagnetic valve 103, and the pressure measuring component is composed of a stop valve and a pressure gauge and is used for detecting pressure.
When the two-position four-way solenoid valve 103 is stopped in the middle, the entire system is in a stopped state. The X-axis hydraulic pump 17 is in an extended motion state when the first three-position four-way solenoid valve 106 and the second three-position four-way solenoid valve 107 are stopped at the left. When the first three-position four-way solenoid valve 106 is on the left and the second three-position four-way solenoid valve 107 is stopped on the right, the X-axis hydraulic pump 17 is in a contracted motion state. When the first three-position four-way solenoid valve 106 is stopped to the right and the second three-position four-way solenoid valve 107 is stopped to the left, the X-axis hydraulic pump 17 is in a contracted motion state. When both the first three-position four-way solenoid valve 106 and the second three-position four-way solenoid valve 107 are stopped on the right, the X-axis hydraulic pump 17 is in an extended motion state. When the second three-position four-way solenoid valve 107 is stopped in the middle, the X-axis hydraulic pump 17 is in a non-operating state. The Y-axis hydraulic pump 19 and the Z-axis hydraulic pump 18 have the same execution motion as the X-axis hydraulic pump 17, and each hydraulic cylinder can be independently controlled, and the execution speed can also be independently controlled.
When the device is used for carrying out the in-situ thermal regeneration of the microwave heating asphalt pavement, the main frame of the universal wheels with the locks is moved and fixed on the pavement to be repaired. And then, respectively performing independent three-way electric drive adjustment on the three heating devices which are arranged in parallel, so that the heating area of the heating device covers the pavement to be repaired. Then respectively adjusting two microwave heaters in the same group of heating devices to enable the radiation cavities of the two microwave heaters to be positioned at the same horizontal height; finally, the slide block guide rail directly connected with the heating device is manually adjusted, so that the distance between the H surfaces of the two microwave heaters is smaller than 10mm, and the heaters are coupled.
Each group of heating devices comprises two microwave heaters which are arranged in parallel along the Y axis, and aims to enable the magnetrons to be mutually coupled while generating an electromagnetic field, so that the optimal heating effect is obtained, and the maximum heating efficiency is obtained under the same energy consumption, so that the energy sources are saved. The wiring port 28 is used for connecting a high-voltage power supply, when the power supply is connected, the magnetron 6 generates an electromagnetic field to act on the asphalt pavement below, polar molecules in the asphalt pavement start to move violently under the action of the electromagnetic field to rub and collide with each other, and the temperature of the asphalt pavement rises along with the polar molecules under the action of the polar molecules, so that the in-situ thermal regeneration of the asphalt pavement is realized.
As shown in fig. 9, in the electromagnetic wave heating process, the cross action and mutual influence of two or more electromagnetic fields are considered, and when the radiation cavities are on the same horizontal plane, microwave coupling is generated in the Y-axis direction. Microwaves belong to electromagnetic waves, and the propagation rule of the microwaves accords with a Maxwell Wei Bodong equation. From this, it is clear that the plane wave along the Z-axis generated by the magnetron propagates along the Z-axis through the guided wave of the radiation cavity only with the electric field intensity E along the X-axis and the magnetic field intensity H along the Y-axis. When a plurality of magnetrons are heated at the same time, coupling occurs if the electric and magnetic fields generated by the magnetrons are in the same horizontal plane. From the COMSOL simulation, it is known that: when the distance between the H surfaces of the two pyramid horn radiation cavities is 0 for coupling heating, the heating area has obvious coupling phenomenon, namely the effective heating area in the heating area becomes larger when the distance between the H surfaces of the pyramid horn radiation cavities and the H surfaces is 0 for coupling, and the whole radiation cavity is basically filled. The y direction of the effective heating area is symmetrical about the central line of the x direction of the pyramid horn mouth surface, and the x direction of the effective heating area is symmetrical about the coupling joint. The optimal heating area is not at the exact center of the pyramid horn radiating cavity mouth plane, but at the coupling of the two pyramid horn radiating cavities. Therefore, at the same power, the heating efficiency at the coupling is highest. As shown in FIG. 9, the distances between the H surfaces of the pyramid horn radiation cavities are respectively 0mm, 10mm and 20mm.
Each heating device can be independently adjusted along the XYZ direction, when the in-place thermal regeneration device heats a damaged pavement with a certain gradient, in order to enable the different heating devices to be coupled, the height of the different heating devices along the Z axis direction can be adjusted by controlling the vertical lifting mechanism, then the X axis and the Y axis guide rail sliding blocks in the heating devices are manually adjusted, so that the heating surfaces of the radiation cavities in the different heating devices can be always kept at the same horizontal position, two heaters in one group of heating devices are coupled in the Y axis, and the coupling of the different groups of heating devices in the X axis can be simultaneously realized through adjustment.
When the magnetron 6 works, electromagnetic waves can be generated, and the magnetron can also generate higher temperature, in order to prevent the magnetron from being burnt due to the generated temperature being too high, the cooling fan 5 is cooled in an air cooling mode, so that the air of the cooling fan 5 is directly blown to the cooling fins of the magnetron 6, and although the power of the cooling fan 5 is smaller, the cooling fans only generate air flow in a relatively smaller range, so that good cold and hot air flow circulation is formed, and the heat dissipation effect is enhanced.
In order to facilitate the movement of the in-place heat regeneration device, a layer of metal shielding net is directly arranged on the periphery of the main frame of the device when the metal shielding device is designed. The metal shielding net is covered outside the whole device, and the metal shielding net is mainly used for shielding some leaked electromagnetic radiation and preventing the leaked electromagnetic radiation from damaging the health of operators and the surrounding environment. When the device is moved, the device is directly pushed to move, and the metal shielding net is not required to be moved, so that time and labor are saved.
According to the hydraulic control system of the microwave heating asphalt pavement on-site thermal regeneration device, the hydraulic pump is used as a power source, different heating devices can be operated simultaneously, so that the different heating devices can be heated simultaneously when being positioned at different heights, and the coupling of the heating devices can be ensured when the heating devices perform microwave thermal regeneration on some damaged pavement with inclination, so that the optimal heating condition is achieved. Meanwhile, the moving control mode is more convenient and accurate, the adjusting range is larger, the adaptability is strong, the damaged asphalt pavement with different inclinations and irregular areas can be adapted, and the repairing requirement in the actual life is met.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (5)
1. A hydraulic control system of a microwave heating asphalt pavement in-situ heat regeneration device is characterized in that: the microwave heating asphalt pavement in-situ heat regeneration device comprises a main frame, a space adjusting device and a heating device; the whole outer side of the main frame is provided with a metal shielding net, and the bottom of the main frame is provided with a universal wheel (3) with a lock; the top of the main frame comprises two first sliding guide rails (8) which are parallel to each other, one end of one sliding guide rail is taken as an origin O to establish a coordinate system, a straight line where the sliding guide rail is positioned is taken as an X axis, a Y axis is perpendicular to the X axis and is positioned on the same horizontal plane with the X axis, and a Z axis is perpendicular to an XOY plane;
the heating device and the space adjusting device respectively comprise three groups, each group of space adjusting device comprises a second sliding guide rail (11) which is bridged on the first sliding guide rail (8) and slides along the X axis through a first guide rail sliding block (9), a second guide rail sliding block (10) which slides along the Y axis is arranged on the second sliding guide rail, and the side surface of the second guide rail sliding block (10) is connected with a vertical lifting mechanism; the bottom of the vertical lifting mechanism is connected with a group of heating devices, and a temperature sensor (12) is arranged at the joint; an X-axis hydraulic pump (17) for driving the first guide rail sliding block (9) is arranged on the first sliding guide rail (8), and a Y-axis hydraulic pump (19) for driving the second guide rail sliding block (10) is arranged on the second sliding guide rail (11); the vertical lifting mechanism comprises a Z-axis hydraulic pump (18);
each group of heating devices comprises two microwave heaters which are arranged in parallel along a Y axis, each microwave heater comprises a pyramid horn-shaped radiation cavity (4) and an excitation cavity (26) connected with the radiation cavity, one group of opposite side walls of the excitation cavity (26) are formed by magnetrons (6), and the other group of opposite side walls of the excitation cavity are respectively provided with a wiring port (28) of the magnetrons and a cooling fan (5) of the excitation cavity; each group of heating device further comprises a bracket (22), two third sliding guide rails (21) are fixed on the bracket (22) in parallel along the Y axis, two fourth sliding guide rails (15) which are arranged in parallel are bridged on the third sliding guide rails (21), and the fourth sliding guide rails (15) are in sliding connection with the third sliding guide rails (21) through third guide rail sliding blocks (20); each microwave heater is in sliding connection with the fourth sliding guide rail (15) through a fourth guide rail sliding block (14) with two fixed side surfaces;
the hydraulic control system comprises a plunger pump (102), a two-position four-way electromagnetic valve (103), an overflow valve (104), a pressure reducing valve (105), a first three-position four-way electromagnetic valve (106), a second three-position four-way electromagnetic valve (107), a third three-position four-way electromagnetic valve (108), a first bidirectional hydraulic control one-way valve (109), a second bidirectional hydraulic control one-way valve (110), a third bidirectional hydraulic control one-way valve (111), a first one-way throttle valve (112), a second one-way throttle valve (113), a third one-way throttle valve (114), a first pressure relay (115), a first energy accumulator (116), a second energy accumulator (119), a second pressure relay (120) and a motor (122);
the motor (122) drives the plunger pump (102) to absorb oil from the oil cylinder, an oil outlet of the plunger pump (102) is connected with an oil inlet of the overflow valve (104), the pressure reducing valve (105) and the third three-position four-way electromagnetic valve (108) through pipelines, and an oil outlet of the overflow valve (104) is connected withOil cylinderThe method comprises the steps of carrying out a first treatment on the surface of the The two working ports of the two-position four-way electromagnetic valve (103) are respectively connected with an oil inlet and an oil outlet of the overflow valve (104), and the oil inlet and the oil return port of the two-position four-way electromagnetic valve (103) are connected into a loop; the oil inlets of the first three-position four-way electromagnetic valve (106) and the second three-position four-way electromagnetic valve (107) are respectively connected with the oil outlets of the pressure reducing valve (105); the first mentionedThe two working ports of the three-position four-way electromagnetic valve (106) are connected with the first bidirectional hydraulic control one-way valve (109), the first bidirectional hydraulic control one-way valve (109) is respectively connected with a first oil inlet and outlet and a second oil inlet and outlet of the X-axis hydraulic pump (17) through two first one-way throttle valves (112), the first energy accumulator (116) is connected with the first oil inlet and outlet of the X-axis hydraulic pump (17), and the first pressure relay (115) is connected with the first energy accumulator (116); the two working ports of the second three-position four-way electromagnetic valve (107) are connected with the second bidirectional hydraulic control one-way valve (110), the second bidirectional hydraulic control one-way valve (110) is respectively connected with a first oil inlet and an oil outlet of the Y-axis hydraulic pump (19) and a second oil inlet and outlet through two second one-way throttle valves (113), the second energy accumulator (119) is connected with the first oil inlet and outlet of the Y-axis hydraulic pump (19), and the second pressure relay (120) is connected with the second energy accumulator (119); the two working ports of the third three-position four-way electromagnetic valve (108) are connected with the third bidirectional hydraulic control one-way valve (111), and the third bidirectional hydraulic control one-way valve (111) is respectively connected with a first oil inlet and an oil outlet and a second oil inlet of the Z-axis hydraulic pump (18) through two third one-way throttle valves (114).
2. The hydraulic control system of the microwave-heated asphalt pavement in-situ thermal regeneration device according to claim 1, wherein: the vertical lifting mechanism comprises an installation seat fixed on the side surface of the second guide rail sliding block, a vertical through hole is formed in the installation seat, and a thrust bearing is arranged in the vertical through hole; the Z-axis hydraulic pump (18) is vertically arranged, a piston rod of the Z-axis hydraulic pump penetrates through the thrust bearing, the end part of a cylinder body of the Z-axis hydraulic pump is contacted with a flat-bottom seat ring of the thrust bearing, and the bottom of the mounting seat is provided with the piston rod clamping structure; the piston rod is characterized in that a lantern ring (24) is arranged at the lower end of the piston rod, the lantern ring (24) is fixed on the piston rod through a limit screw, an L-shaped connecting plate (7) is vertically and fixedly connected to the side face of the lantern ring (24), and the bottom end of the L-shaped connecting plate (7) is connected with the heating device.
3. The hydraulic control system of the microwave-heated asphalt pavement in-situ thermal regeneration device according to claim 1, wherein: and limiting structures are arranged on the third guide rail sliding block (20) and the fourth guide rail sliding block (14).
4. The hydraulic control system of the microwave-heated asphalt pavement in-situ thermal regeneration device according to claim 2, wherein: the hydraulic pump is characterized by further comprising a fixing support (25), wherein the fixing support (25) comprises a base and a lantern ring which are fixedly connected with each other, the lantern ring is sleeved on a cylinder body of the Z-axis hydraulic pump (18), and the base of the fixing support (25) is fixed on the mounting seat.
5. The hydraulic control system of the microwave-heated asphalt pavement in-situ thermal regeneration device according to claim 2, wherein: an oil inlet of the plunger pump (102) is connected with the filter (101).
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2758601A1 (en) * | 1977-01-03 | 1978-07-13 | Morris R Jeppson | PROCEDURE AND EQUIPMENT FOR REPAIRING ROAD COVERS |
| CN2670427Y (en) * | 2002-11-12 | 2005-01-12 | 广东美的集团股份有限公司 | Microwave asphaltic road surface heater |
| DE102009043603A1 (en) * | 2009-09-28 | 2011-03-31 | Kurt Fritzsche | Device and process for restoration of asphalt roads, cycle paths and foot path mark up, comprises e.g. removing tears, blow holes and root departures by heating of original street coatings using heaters with vertical microwaves |
| CN103276373A (en) * | 2013-05-28 | 2013-09-04 | 南方科技大学 | Plasma enhanced chemical vapor deposition (PECVD) device |
| CN104120639A (en) * | 2013-04-25 | 2014-10-29 | 拜耳材料科技(中国)有限公司 | Drying and temperature-controlling device for ballast and operating method thereof |
| CN105544369A (en) * | 2016-01-22 | 2016-05-04 | 安徽工程大学 | Adjustable bituminous pavement microwave heat regeneration test device |
| CN105970789A (en) * | 2016-06-01 | 2016-09-28 | 西安电子科技大学 | Microwave heating device based on power division and radiation integration |
| CN106769635A (en) * | 2017-03-20 | 2017-05-31 | 安徽工程大学 | A kind of heat and mass experimental provision on adjustable microwave heated asphalt road surface |
| CN107268414A (en) * | 2017-08-07 | 2017-10-20 | 江苏集萃道路工程技术与装备研究所有限公司 | A kind of microwave heating equipment suitable for sheet pavement in-situ heat regeneration train |
| CN107288018A (en) * | 2017-08-07 | 2017-10-24 | 江苏集萃道路工程技术与装备研究所有限公司 | A kind of microwave heater and its microwave heating wall on the spot |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1146958B (en) * | 1980-04-29 | 1986-11-19 | Autostrade Concess Const | SELF-PROPELLED OPERATING MACHINE FOR THE REGENERATION OF STREET FLOORING IN BITUMINOUS CONGLOMERATE, USING A RADIOFREQUENCY GENERATOR WITH MICROWAVE COUPLED TO AT LEAST ONE CRACKED WAVE GUIDE ILLUMINATOR FOR HEATING THE COVER |
-
2018
- 2018-03-13 CN CN201810204023.2A patent/CN108265590B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2758601A1 (en) * | 1977-01-03 | 1978-07-13 | Morris R Jeppson | PROCEDURE AND EQUIPMENT FOR REPAIRING ROAD COVERS |
| CN2670427Y (en) * | 2002-11-12 | 2005-01-12 | 广东美的集团股份有限公司 | Microwave asphaltic road surface heater |
| DE102009043603A1 (en) * | 2009-09-28 | 2011-03-31 | Kurt Fritzsche | Device and process for restoration of asphalt roads, cycle paths and foot path mark up, comprises e.g. removing tears, blow holes and root departures by heating of original street coatings using heaters with vertical microwaves |
| CN104120639A (en) * | 2013-04-25 | 2014-10-29 | 拜耳材料科技(中国)有限公司 | Drying and temperature-controlling device for ballast and operating method thereof |
| CN103276373A (en) * | 2013-05-28 | 2013-09-04 | 南方科技大学 | Plasma enhanced chemical vapor deposition (PECVD) device |
| CN105544369A (en) * | 2016-01-22 | 2016-05-04 | 安徽工程大学 | Adjustable bituminous pavement microwave heat regeneration test device |
| CN105970789A (en) * | 2016-06-01 | 2016-09-28 | 西安电子科技大学 | Microwave heating device based on power division and radiation integration |
| CN106769635A (en) * | 2017-03-20 | 2017-05-31 | 安徽工程大学 | A kind of heat and mass experimental provision on adjustable microwave heated asphalt road surface |
| CN107268414A (en) * | 2017-08-07 | 2017-10-20 | 江苏集萃道路工程技术与装备研究所有限公司 | A kind of microwave heating equipment suitable for sheet pavement in-situ heat regeneration train |
| CN107288018A (en) * | 2017-08-07 | 2017-10-24 | 江苏集萃道路工程技术与装备研究所有限公司 | A kind of microwave heater and its microwave heating wall on the spot |
Non-Patent Citations (3)
| Title |
|---|
| Investigation of wireless power transfer applications with a focus on renewable energy;Saransch Chhawchharia,etc.;Renewable and Sustainable Energy Reviews;第91卷;全文 * |
| 微波加热沥青混合料传热模型研究;陈陆骏;孙铜生;许德章;;井冈山大学学报(自然科学版)(第03期);全文 * |
| 沥青路面现场微波加热再生模型与实验;朱松青;史金飞;王鸿翔;;东南大学学报(自然科学版)(第03期);全文 * |
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