JP2015042798A - Heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater capable of simply and inexpensively adjusting heating width by saving extra storage space.SOLUTION: A heater 1 includes at least two heating parts 10 that are installed in such a manner as to be arranged in front and rear positions in a lower part of a paving vehicle 100 traveling on an existing pavement body R and that heat the existing pavement body R, and sliding means 20 for sliding the heating part 10 in a width direction with respect to the paving vehicle 100.

Description

  The present invention relates to a heating device.

  For example, in road repair work or the like, a heating device is generally installed at the lower part of a vehicle, and the road is heated and softened by the heating device while the vehicle is running.

  With regard to this type of heating device, for example, Patent Document 1 includes a central heating unit installed in the lower center of the vehicle and side heating units that can be attached to and removed from the left and right sides of the central heating unit, depending on the width of the road. An invention is disclosed in which the heating width is adjusted by detaching the side heating section.

Japanese Utility Model Publication No. 58-59811

  However, in the invention of Patent Document 1, every time the road width changes, it is necessary to manually remove and install the side heating section, which requires a lot of labor, and during construction (heating width adjustment) There is a problem that work efficiency is poor.

  Moreover, since it is necessary to prepare and attach various sizes of a side heating part so that it can respond to various road widths, there exists a problem that cost increases.

  Furthermore, when the road width is narrow and can be dealt with only by the central heating section, it is necessary to store the removed side heating section. If such a storage space is provided in the vehicle, there is a problem that the size of the vehicle is increased. . In particular, if a variety of side heating units are prepared and attached, it is necessary to increase the storage space by that amount, thereby further increasing the size of the vehicle.

  The present invention has been created from such a viewpoint, and an object of the present invention is to provide a heating device that can cut an unnecessary storage space and adjust the heating width easily and inexpensively.

  In order to solve such a problem, the heating device of the present invention is installed side by side at the lower part of a vehicle traveling on a pavement, and is installed in the vehicle, and at least two heating units for heating the pavement. On the other hand, there is provided slide means for sliding the heating unit in the width direction.

  According to the present invention, since the slide means for sliding the at least two heating units in the width direction with respect to the vehicle is provided, the heating width is simplified by sliding the heating unit in the width direction according to the width of the pavement. Can be adjusted. In addition, it is not necessary to prepare and attach various heating units, and it is only necessary to slide the heating unit in the width direction, so that the cost can be reduced. Further, when the width of the pavement is small, the heating unit can be slid inward in the width direction to cope with it, so there is no need to remove the heating unit. Therefore, since it is not necessary to provide the storage space of the removed heating part in the vehicle, the increase in size of the vehicle can be suppressed.

  The heating unit is preferably configured to be able to switch the intensity of the heating amount in multiple steps for each predetermined region along the width direction.

  According to such a configuration, the heating amount of the region where the heating parts wrap around each other is set to be weak, and the heating amount per region which is not wrapped before and after is set to be strong, thereby reducing the heating amount per unit area of the pavement. Can be constant. Therefore, partial overheating and insufficient heating of the pavement can be prevented.

  A slide amount sensor for detecting a slide amount of the slide means, and a lap determination unit for determining a wrap region where the heating units wrap in the front and back and a non-wrap region which does not wrap based on a detection result of the slide amount sensor; It is desirable to include a heating amount control unit that controls the heating amount of the non-wrapping region of the heating unit to be larger than the heating amount of the wrapping region based on the determination result of the lap determination unit.

  According to such a configuration, since the heating amount for each predetermined region along the width direction of the heating unit can be automatically switched and controlled, the work efficiency during construction is improved.

  It is desirable that the start of the heating unit is remotely controlled by a remote controller.

  According to such a configuration, the ignition to the heating unit can be remotely controlled with the remote controller.

  According to the heating device of the present invention, an extra storage space can be cut and the heating width can be adjusted easily and inexpensively.

It is a side view which shows the whole structure of the paving vehicle provided with the heating apparatus which concerns on this embodiment. It is a side view of the heating device concerning this embodiment. It is the II sectional view taken on the line of FIG. It is the II equivalent cross section figure of FIG. 2 which shows the state which raised the jump frame. It is explanatory drawing for demonstrating the slide operation | movement of the heating part before and behind. It is a block diagram which shows a gas supply means. It is a functional block diagram of the heating device concerning this embodiment. It is explanatory drawing for demonstrating the relationship between the position of the heating part before and behind, and the heating amount of a heater, (a) is a schematic plan view which shows the heating amount of the heater at the time of the minimum heating width, (b) is intermediate | middle FIG. 4C is a schematic plan view showing the heating amount of the heater at the heating width, and FIG. 5C is a schematic plan view showing the heating amount of the heater at the maximum heating width. It is a flowchart which shows the procedure which sets the heating amount of the heater of the heating apparatus which concerns on this embodiment.

  Embodiments of the present invention will be described in detail with reference to the drawings. In this embodiment, the case where the heating device of the present invention is mounted on a paved vehicle for repairing an existing pavement will be described as an example, but the purpose of use of the heating device is not limited. Prior to the description of the heating apparatus 1 according to the present embodiment, the overall configuration of the paved vehicle 100 will be described.

FIG. 1 is a side view showing an overall configuration of a paved vehicle 100 including a heating device 1 according to the present embodiment.
As shown in FIG. 1, the paved vehicle 100 includes a vehicle main body 110, a heating device 1, a scraping device 120, a supply device 130, and a spread leveling device 140. The vehicle main body 110 includes a pair of left and right front and rear wheels, an engine, a handle, a driver's seat, and the like for traveling on the existing pavement R. The heating device 1 is a device that heats the existing pavement R. The scraping device 120 is a device that scrapes the surface layer portion of the existing pavement R heated by the heating device 1 at a predetermined depth.

  The supply device 130 includes a hopper 131, a conveying device 132, and a screw device 133, and is a device that supplies a new asphalt mixture to the surface layer portion of the existing paved body R that has been loosened. A new asphalt mixture is supplied to the hopper 131 from a dump truck (not shown). The transport device 132 is a device that transports the new asphalt mixture stored in the hopper 131 to the rear of the vehicle and supplies it onto the screw device 133. The screw device 133 is a device that spreads the new asphalt mixture that has been conveyed so as to spread over the entire width of the leveling device 140. The spread leveling device 140 is a device for leveling a new asphalt mixture spread in the width direction with a predetermined layer thickness. By running such a paved vehicle 100, the construction can be performed in the order of heating of the existing pavement R → scraping → supply of a new asphalt mixture → spread spreading → spread leveling. Then, by placing a Madakam roller and a tire roller on the rear side of the paved vehicle 100 and running, the new asphalt mixture leveled and the surface layer portion of the existing pavement R are rolled and compacted. The heating device 1 may be mounted on a conventionally known road heater or the like.

  Next, the heating apparatus 1 according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 9. FIG. 2 is a side view of the heating apparatus 1 according to the present embodiment. 3 is a cross-sectional view taken along the line II of FIG.

  As shown in FIGS. 2 and 3, the heating device 1 includes a heating unit 10, a slide unit 20, a slide amount sensor 30, a lifting cylinder 40, and a gas supply unit 50 (see FIG. 1). .

<Heating section>
As shown in FIGS. 2 and 3, the heating unit 10 is installed in a lower part of the vehicle main body 110 in a state substantially parallel to the existing pavement R. A plurality of (for example, two) heating units 10 are installed side by side in the front-rear direction. The heating unit 10 is configured by arranging a plurality of (for example, 18) rectangular parallelepiped heaters 12 in the width direction on a support frame 11. Note that the number of heating units 10 may be three or more, and the number of heaters 12 may be changed as appropriate.

FIG. 4 is a cross-sectional view corresponding to the line II in FIG. 2 showing a state in which the jump frame 14 is raised.
As shown in FIGS. 3 and 4, the support frame 11 includes a central frame 13 and a pair of left and right jumping frames 14, and the raising frame 14 is configured to be tiltable with respect to the center frame 13. The left and right jumping frames 14 are connected to the outer ends in the width direction of the central frame 13 through the rotation shaft 15, respectively. The jumping frame 14 rotates in the vertical direction about the rotation shaft 15 as a central axis. The jumping frame 14 is raised vertically during transportation and falls down horizontally during heating.

  The heater 12 is a gas infrared heater that uses gas as fuel, and is a member that heats the existing pavement R by radiating far infrared rays in a radiation manner. As shown in FIGS. 2 and 3, the heater 12 is installed on the support frame 11 with its length direction oriented in the front-rear direction.

<Sliding means>
The slide means 20 is means for sliding the heating unit 10 in the width direction. As shown in FIGS. 2 and 3, the slide means 20 includes a suspension frame 21, a slide frame 22, and a slide cylinder 23.

  The hanging frame 21 is a square frame-shaped and steel member for hanging and supporting the heating unit 10 and the slide frame 22. The four corners of the suspension frame 21 are connected to the lower part of the vehicle main body 110 via four lifting cylinders 40. As shown in FIG. 2, four slide rails 24 are installed at the lower part of the suspension frame 21 so as to be separated from each other in the front-rear direction. The slide rail 24 is a steel material having a U-shaped cross section, and extends along the width direction. The pair of front and rear slide rails 24 are installed with their openings facing each other.

  The slide frame 22 is a steel member installed below the suspension frame 21. Two slide frames 22 are installed side by side. The slide frame 22 includes a plurality of quadrangular columnar column members 22a erected on the support frame 11, and a single and rectangular flat plate member 22b disposed on the column member 22a. A bearing 25 fixed to the upper portion, a shaft 26 supported by the bearing 25, and wheels 27 rotatably installed at both ends in the axial direction of the shaft 26 are provided on the upper portion of the flat plate 22b. . In the present embodiment, as shown in FIGS. 2 and 3, three shafts 26 are installed at intervals in the width direction, and two bearings 25 and wheels 27 are installed on one shaft 26. ing. The pair of front and rear wheels 27 is configured to be guided along the pair of front and rear slide rails 24.

  The slide cylinder 23 is a hydraulic cylinder for sliding the slide frame 22 and the heating unit 10 in the width direction with respect to the vehicle main body 110. The slide cylinder 23 is installed at an appropriate position of the suspension frame 21. One slide cylinder 23 is connected to each heating unit 10. The tip of the slide cylinder 23 (the tip of the piston rod) is fixed to the upper part of the slide frame 22 by a locking member 28.

FIG. 5 is an explanatory diagram for explaining the sliding operation of the heating unit 10 before and after according to the present embodiment.
As shown in FIG. 5, in this embodiment, the wheel 27 rolls on the slide rail 24 by the expansion and contraction of the piston rod of the slide cylinder 23, and the slide frame 22 and the heating unit 10 are integrated with the suspension frame 21. Slide in the width direction. Further, since the expansion and contraction directions of the front and rear slide cylinders 23 are reversed left and right, the front and rear heating units 10 slide and move in the left and right reverse directions. Thereby, the heating width can be adjusted.

<Slide amount sensor>
As shown in FIG. 3, the slide amount sensor 30 is a sensor that detects the expansion / contraction length of the piston rod of the slide cylinder 23 in a non-contact manner. A plurality of (for example, five) slide amount sensors 30 are installed at intervals along the expansion / contraction direction of the slide cylinder 23. The detection result of the slide amount sensor 30 is output to the control means 90 (see FIG. 7) described later.

<Cylinder for lifting>
As shown in FIGS. 2 and 3, the lifting cylinder 40 is a hydraulic cylinder that raises or lowers the suspension frame 21, the heating unit 10, and the like with respect to the vehicle main body 110. A plurality of (for example, four) lifting cylinders 40 are installed between the lower portion of the vehicle body 110 and the upper four corners of the suspension frame 21.

<Gas supply means>
FIG. 6 is a configuration diagram showing the gas supply means 50.
As shown in FIG. 6, the gas supply unit 50 is a unit that supplies gas to the heater 12, and includes a plurality of gas cylinders 51 and a plurality of gas supply pipes 52 that connect the gas cylinders 51 and the heater 12.

  The gas cylinder 51 is a container for storing high-pressure liquefied gas supplied to the heater 12. As shown in FIG. 1, the gas cylinder 51 is housed in a vaporizer 53 mounted on the vehicle main body 110. The vaporizer 53 is a device that warms the gas cylinder 51 frozen by the heat of vaporization with warm water. Although not shown in the drawings, the vaporizer 53 is composed of an instrument for storing and fixing the gas cylinder 51, a water tank in which the lower side of the gas cylinder 51 is immersed, and a fuel-type burner that heats the water in the water tank from below.

  As shown in FIG. 6, the gas supply pipe 52 includes a shared gas supply system 54 connected to the gas cylinder 51, a first gas supply system 55 and a second gas that are branched into two from the downstream end of the shared gas supply system 54. A supply system 56 is configured. In the common gas supply system 54, a strainer 57 for removing foreign substances and a first gas pressure adjusting valve 58 for adjusting the gas pressure to be constant are installed. The first gas supply system 55 is a system that supplies gas to the heater 12 through a second gas pressure regulating valve 59 that decompresses the gas. The second gas supply system 56 is a system that supplies gas to the heater 12 without passing through the second gas pressure regulating valve 59. The gas pressure (secondary pressure) in the first gas supply system 55 becomes lower than the gas pressure (primary pressure) in the second gas supply system 56 by the pressure reducing action of the second gas pressure regulating valve 59. Accordingly, the heating amount Q1 of the heater 12 when the gas is supplied from the first gas supply system 55 is lower than the heating amount Q2 of the heater 12 when the gas is supplied from the second gas supply system 56 ( Q1 <Q2). In the present embodiment, the heating amount Q2 is set to be twice the heating amount Q1 by adjusting the pressure ratio between the primary pressure and the secondary pressure. The heater 12 is configured to be switchable between two stages of a low heating mode in which gas is supplied from the first gas supply system 55 and heated and a high heating mode in which gas is supplied from the second gas supply system 56 and heated. Yes.

  The first gas supply system 55 includes a low heating main pipe 55a, a low heating first branch pipe 55b branched from the downstream end of the low heating main pipe 55a, and a low heating first branch pipe 55b. The second branch pipe 55c for low heating branches from the downstream end into six branches. In the low heating main pipe 55a, a second gas pressure adjusting valve 59 and a low heating first electromagnetic valve 55d for opening and closing the low heating main pipe 55a are installed. One of the low heating first branch pipes 55b is a pipe for supplying gas to the front heating unit 10, and the other is a pipe for supplying gas to the rear heating unit 10. The low heating second branch pipe 55 c is a pipe connected to the heater 12. A low heating second electromagnetic valve 55e for opening and closing the low heating second branch pipe 55c is installed in each of the low heating second branch pipes 55c. In the present embodiment, the supply and stop of gas supply to the three heaters 12 are collectively performed by opening and closing one low heating second electromagnetic valve 55e. Note that the gas supply to one or two or more heaters 12 may be stopped or supplied by opening / closing one low heating second electromagnetic valve 55e.

  The second gas supply system 56 includes a high heating main pipe 56a, a high heating first branch pipe 56b branched from the downstream end of the high heating main pipe 56a, and a high heating first branch pipe 56b. It is comprised with the 2nd branch pipe 56c for high heating which branches into six each from a downstream end. In the high heating main pipe 56a, a high heating first electromagnetic valve 56d for opening and closing the high heating main pipe 56a is provided. One of the high heating first branch pipes 56b is a pipe for supplying gas to the front heating unit 10, and the other is a pipe for supplying gas to the rear heating unit 10. The downstream end of the high heating second branch pipe 56c is connected to a downstream portion of the low heating second branch pipe 55c relative to the low heating second electromagnetic valve 55e. In the high heating second branch pipe 56c, a high heating second electromagnetic valve 56e for opening and closing the high heating second branch pipe 56c is installed. In the present embodiment, the supply and stop of gas supply to the three heaters 12 are collectively performed by opening and closing one high heating second electromagnetic valve 56e. Note that gas supply to one or two or more heaters 12 may be stopped or supplied by opening / closing one high heating second electromagnetic valve 56e.

FIG. 7 is a functional block diagram of the heating apparatus 1 according to the present embodiment.
As shown in FIG. 7, the heating device 1 further includes an ignition unit 60, a remote controller 70, an operation panel 80, and a control unit 90.

<Ignition means>
The ignition means 60 is means for generating a spark to ignite the gas and ignite the heater 12. Although not shown, the ignition means 60 is composed of a known transformer unit, ignition plug, pilot mixer, pilot burner, and the like. The pilot burner is connected to the gas cylinder 51 via a gas supply pipe, a solenoid valve, or the like.

<Remote controller>
The remote controller 70 is an operation means for remotely operating ON / OFF of the ignition means 60. The remote controller 70 includes operation buttons for starting ignition and ending ignition and is connected to the control means 90 wirelessly. By pressing the operation button, an ignition start signal, an ignition end signal, or the like is output to the control means 90. With such a configuration, the ignition means 60 can be ignited by the remote controller 70 and the ignition to the heating unit 10 can be remotely controlled.

<Operation panel>
The operation panel 80 is an operation means for operating expansion / contraction of the slide cylinder 23 and the lift cylinder 40. The operation panel 80 includes operation buttons for starting and stopping expansion and contraction, and is connected to the control means 90. By pressing the operation button, an expansion / contraction start signal, an expansion / contraction stop signal, or the like is output to the control means 90.

<Control means>
The control means 90 includes a programmable logic controller (PLC), a control relay, a hydraulic control amplifier, a wireless receiver (including a wireless antenna), an ignition transformer (ignition transformer), and the like. The control means 90 is connected to the operation panel 80, the slide amount sensor 30, the remote controller 70, etc. (the remote controller 70 is wirelessly connected), and starts / stops expansion / contraction of the slide cylinder 23, etc. Various information signals relating to the expansion / contraction length and the ignition start / ignition end of the ignition means 60 are received. Further, the control means 90 includes a slide cylinder 23, a lifting cylinder 40, a low heating first electromagnetic valve 55d, a low heating second electromagnetic valve 55e, a high heating first electromagnetic valve 56d, and a high heating second electromagnetic valve. It is connected to the valve 56e, the ignition means 60, etc., and controls various operations relating to sliding, raising / lowering, opening / closing, ignition and the like. The control means 90 includes a slide control unit 91, a lap determination unit 92, a heating amount control unit 93, a receiving unit 94, and an ignition control unit 95.

  When receiving the expansion / contraction start signal or the expansion / contraction stop signal from the operation panel 80, the slide control unit 91 has a function of expanding / contracting the slide cylinder 23 or stopping expansion / contraction of the slide cylinder 23.

  The lap determination unit 92 measures the expansion / contraction length of the piston rod of the sliding cylinder 23 based on the detection result of the slide amount sensor 30, and from this measurement result, the heating unit 10 does not wrap with the wrap region that wraps back and forth. A function is provided for determining the presence or absence of a lap region and the position of each region. The determination result is output to the heating amount control unit 93.

  The heating amount control unit 93 has a function of switching the strength of the heating amount for each predetermined region along the width direction of the heating unit 10 based on the determination result of the lap determination unit 92. That is, when the wrap region and the non-wrap region coexist, the heating amount control unit 93 supplies gas from the first gas supply system 55 to the heater 12 in the wrap region and from the second gas supply system 56 to the heater in the non-wrap region. 12 is controlled to supply gas. Thereby, the heating amount of the heater 12 in the non-wrap region can be controlled to be twice the heating amount of the heater 12 in the wrap region. When only the lap region exists, the heating amount control unit 93 controls to supply gas to all the heaters 12 only from the first gas supply system 55. When only the non-wrap region exists, the heating amount control unit 93 controls to supply gas to all the heaters 12 only from the second gas supply system 56.

  The receiving unit 94 has a function of receiving the ignition start signal and the ignition end signal output from the remote controller 70. The received signal is output to the ignition control unit 95.

  The ignition control unit 95 has a function of controlling ON / OFF of the ignition unit 60 based on the reception signals of the reception unit 94 (ignition start signal and ignition end signal output from the remote controller 70).

  The heating device 1 according to the embodiment of the present invention is basically configured as described above. Next, the sliding operation of the heating device 1 will be described with reference to FIGS. 3 and 5. In the following description, as shown in FIG. 3, the minimum heating width is defined as a state where the jump frame 14 is tilted and the slide cylinder 23 is contracted most. The minimum heating width is set to 2.5 m or less.

  When expanding the heating width beyond the minimum heating width, the slide cylinder 23 is extended as shown in FIG. When extended in this way, the front and rear heating units 10 slide in the opposite directions. That is, the wheel 27 of the heating unit 10 rolls the slide rail 24 outward in the width direction, and the slide frame 22 and the heating unit 10 slide and move integrally with the suspension frame 21 outward in the width direction. Thereby, the heating width can be widened.

  On the other hand, when the expanded heating width is narrowed, the sliding cylinder 23 is contracted. When contracted in this manner, the front and rear heating units 10 slide in the opposite directions. That is, the wheel 27 of the heating unit 10 rolls the slide rail 24 inward in the width direction, and the slide frame 22 and the heating unit 10 slide and move inward in the width direction integrally with the suspension frame 21. Thereby, the heating width can be narrowed.

  Next, the relationship between the positions of the front and rear heating units 10 and the heating amount of the heater 12 will be described with reference to FIG. In FIG. 8, dot hatched portions indicate the heater 12 in the high heating mode, and portions without dot hatching indicate the heater 12 in the low heating mode. In addition, the position of the heating part 10 before and behind is not limited to what was illustrated.

  FIG. 8A shows the positions of the heating unit 10 before and after the minimum heating width. In the minimum heating width, the entire region between the heating units 10 is wrapped in the front and back. In such a position, all the heaters 12 are set to the low heating mode.

  FIG. 8B shows the positions of the heating unit 10 before and after the intermediate heating width. In the intermediate heating width, a wrap region where the heating units 10 wrap around each other and a non-wrap region where no wrap is performed are mixed in half. In such a position, the heater 12 in the lap region is set to the low heating mode, and the heater 12 in the non-lap region is set to the high heating mode.

  FIG. 8C shows the position of the heating unit 10 before and after the maximum heating width. In the maximum heating width, the entire region between the heating units 10 does not wrap around. At this position, all the heaters 12 are set to the high heating mode.

  Next, with reference to FIG. 9, a procedure in which the control unit 90 sets the heating amount of the heater 12 based on the detection result detected by the slide amount sensor 30 will be described.

  As shown in the flowchart of FIG. 9, the lap determination unit 92 measures the expansion / contraction length of the piston rod of the slide cylinder 23 based on the detection result of the slide amount sensor 30 (step S101).

  Subsequently, the lap determination unit 92 determines whether or not there is a wrap region where the heating units 10 wrap in front and back based on the measurement result (step S102).

  When the lap determination unit 92 determines that there is no wrap region (No in step S102, in the case of FIG. 8C), the lap determination unit 92 heats the determination result that there is only a non-wrap region. It outputs to the quantity control part 93.

  Subsequently, the heating amount control unit 93 supplies gas to all the heaters 12 only from the second gas supply system 56 based on the determination result that there is only the non-wrap region (step S103). That is, the heating amount controller 93 closes the low heating first electromagnetic valve 55d and the low heating second electromagnetic valve 55e shown in FIG. 7, and the high heating first electromagnetic valve 56d and the high heating second electromagnetic valve 56e. , The gas is supplied to all the heaters 12 only from the second gas supply system 56, and the process is terminated.

  When the lap determination unit 92 determines that there is a lap region (Yes in step S102), the lap determination unit 92 has a non-wrap region where the heating units 10 do not wrap around each other based on the measurement result. It is determined whether or not (step S104).

  When the lap determination unit 92 determines that there is no non-wrap region (in the case of No in step S104, in the case of FIG. 8A), the lap determination unit 92 heats the determination result that there is only the wrap region. It outputs to the quantity control part 93.

  Subsequently, the heating amount control unit 93 supplies gas to all the heaters 12 only from the first gas supply system 55 based on the determination result that there is only the lap region (step S105). That is, the heating amount controller 93 opens the low heating first electromagnetic valve 55d and the low heating second electromagnetic valve 55e shown in FIG. 7, and the high heating first electromagnetic valve 56d and the high heating second electromagnetic valve 56e. , The gas is supplied to all the heaters 12 only from the first gas supply system 55, and the process is terminated.

  When the lap determination unit 92 determines that there is a non-lap region (Yes in step S104, for example, in the case of FIG. 8B), since the wrap region and the non-wrap region are mixed, the lap determination unit 92 The positions of the wrap region and the non-wrap region are respectively specified, and the specified result is output to the heating amount control unit 93 (step S106).

  Subsequently, the heating amount controller 93 supplies gas from the first gas supply system 55 to the heater 12 in the lap area based on the result of specifying the positions of the lap area and the non-lap area, and from the second gas supply system 56. Gas is supplied to the heater 12 in the non-wrap region (step S107). That is, the heating amount control unit 93 opens the first electromagnetic valve for low heating 55d and the first electromagnetic valve for high heating 56d shown in FIG. Further, the heating amount control unit 93 opens the low heating second electromagnetic valve 55e corresponding to the heater 12 in the lap region, and closes the high heating second electromagnetic valve 56e. Furthermore, the heating amount control unit 93 closes the low heating second electromagnetic valve 55e corresponding to the heater 12 in the non-lap region, and opens the high heating second electromagnetic valve 56e. By performing such control, the gas is supplied from the first gas supply system 55 to the heater 12 in the lap region, the gas is supplied from the second gas supply system 56 to the heater 12 in the non-lap region, and the process is terminated.

  According to the present embodiment described above, since the slide cylinder 23 for slidingly moving the two heating units 10 in the width direction with respect to the vehicle main body 110 is provided, the heating unit 10 has a width corresponding to the width of the existing pavement R. The heating width can be easily adjusted by sliding in the direction. In addition, it is not necessary to prepare and attach various types of heating units 10, and it is only necessary to slide the heating unit 10 in the width direction, so that the cost can be reduced. Furthermore, when the width of the existing pavement R is narrow, the heating unit 10 need not be removed because the heating unit 10 can be slid inward in the width direction. Therefore, since it is not necessary to provide the storage space for the removed heating unit 10 in the vehicle, the increase in size of the vehicle can be suppressed.

  According to the present embodiment, the heating amount per unit area of the existing pavement R can be made constant by making the heating amount of the heater 12 in the non-wrapping region twice the heating amount of the heater 12 in the wrapping region. Therefore, partial overheating and insufficient heating of the existing pavement R can be prevented.

  According to this embodiment, by providing the slide amount sensor 30, the lap determination unit 92, and the heating amount control unit 93, the heating amount for each predetermined region along the width direction of the heating unit 10 can be automatically switched and controlled. Therefore, work efficiency at the time of construction improves.

  According to the present embodiment, the ignition means 60 can be ignited by the remote controller 70 and the ignition to the heating unit 10 can be remotely controlled. Incidentally, in the case of the conventional wired system, taking into consideration the ignition workability of the heater 12, dedicated control panels are installed on the left and right (or several locations) of the vehicle to perform ignition. Therefore, two or more identical control panels are required, and the manufacturing cost is high. On the other hand, according to the present embodiment, the adoption of the wireless remote controller 70 enables the single remote controller 70 to be reused, thereby realizing a reduction in production cost and being limited to a place. In other words, ignition can be performed at any position of the vehicle.

  As mentioned above, although embodiment of this invention was described in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of this invention, it can change suitably.

  The heating device 1 of the present embodiment is a gas far infrared heater device, but may have other configurations. For example, a kerosene burner hot air circulation device that includes a kerosene tank and a kerosene burner and circulates and heats hot air injected from the kerosene burner may be used.

  Although the heater 12 of the present embodiment is configured to be switchable between two stages of a low heating mode and a high heating mode, the heater 12 may be configured to be able to switch the intensity of the heating amount to three or more stages. As described above, when the number of stages is three or more, the number of gas pressure regulating valves, gas supply systems, solenoid valves, and the like is changed as appropriate.

  In the present embodiment, all the heating units 10 are slid to adjust the heating width, but at least one heating unit 10 may be slid to adjust the heating width.

  Although the slide means 20 of the present embodiment is configured to slide the heating unit 10 in the width direction by the slide cylinder 23, other configurations may be used. For example, the heating unit 10 may be slid in the width direction using a ball screw and a drive motor.

DESCRIPTION OF SYMBOLS 1 Heating apparatus 10 Heating part 12 Heater 20 Slide means 23 Slide cylinder 30 Slide amount sensor 40 Lifting cylinder 50 Gas supply means 60 Ignition means 70 Remote controller 80 Operation panel 90 Control means 91 Slide control part 92 Lap determination part 93 Heating amount Control unit 94 Receiving unit 95 Ignition control unit 100 Pavement vehicle R Existing pavement (pavement)

Claims (4)

At least two heating units that are installed side by side at the bottom of the vehicle traveling on the pavement, and heat the pavement,
And a sliding means for sliding the heating unit in the width direction relative to the vehicle.   The heating device according to claim 1, wherein the heating unit is configured to be able to switch the amount of heating in multiple steps for each predetermined region along the width direction. A slide amount sensor for detecting a slide amount of the slide means;
A lap determination unit that determines a wrap region where the heating units wrap around each other and a non-wrap region that does not wrap based on the detection result of the slide amount sensor,
The heating amount control part which controls the heating amount of the said non-wrap area | region of the said heating part larger than the heating amount of the said wrap area | region based on the determination result of the said lap | wrap determination part, The heating amount control part is provided. The heating device described.   The heating apparatus according to any one of claims 1 to 3, wherein the start of the heating unit is remotely controlled by a remote controller.

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