JPH045549Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a road surface heating device used for repair work of asphalt pavement.

[Prior Art] Generally, when repairing an existing asphalt pavement, the pavement is first heated and softened and scraped up, then the scraped up paving material is spread evenly, and new asphalt mixture is laid on top of it. Methods such as laying paving materials, or kneading scraped paving materials and new composite materials and laying the paving materials are adopted. Such repair work may be carried out using a single multifunctional asphalt paving vehicle that has all of the above functions, or by a combination of dedicated work vehicles that have each of the above functions individually or in combination. However, in both cases, heating and softening of the paved road surface is performed by a heating device.

Conventionally, this type of heating device has a plurality of box-shaped burners arranged in a horizontal and vertical plane in close contact with each other inside a rectangular frame provided on the vehicle body. Often used are systems in which fuel such as gas is burned in the burner and the road surface is heated by infrared rays.

[Problems to be Solved by the Invention] However, the conventional heating device described above has a problem in that it is difficult to ignite the burners arranged in a planar manner at the same time. For example, when manually igniting each burner in sequence, a long ignition tool and an on-off valve to supply and shut off fuel to each burner are required, which poses safety problems such as the risk of fire or explosion if the procedure is incorrect. It was hot.

[Means for Solving the Problems] In order to solve the above-mentioned problems, this invention provides a frame body facing the road surface and forming a plane with the road surface on the traveling vehicle body, and A plurality of box-shaped burners are arranged closely together inside, and an ignition burner for igniting each burner is arranged in the center of the frame. The opening for ejecting the ignition flame to the side includes an ignition flame diffuser formed on the side.

[Function] In such a road surface heating device, the ignition flame ejected from the opening formed on the side of the ignition flame diffuser of the ignition burner placed in the center of the frame is blown directly onto the lower surface of the burner. and each burner is ignited at the same time.

[Example] Hereinafter, an example of the road surface heating device of this invention will be described with reference to FIGS. 1 to 7.

In the figure, reference numeral 1 denotes a traveling vehicle body consisting of a tractor, and a heating device A is provided at the rear of the vehicle body. That is, a first frame 3 is provided at the rear end of the traveling vehicle body 1 and is rotated from side to side by a swing cylinder 2.
The first frame 3 is provided with a second frame 5 that is moved up and down by a vertical cylinder 4, and the second frame 5 has a pair of front and rear frames 6 that are foldable at the center. The front part of the frame body 6 is supported so as to be vertically rotatable. On the upper part of the second frame 5, the central part of the pair of front and rear frames 6 is pulled up and the front and rear frames 6 are bent at the hinge part 6a, so that the angle of the frame 6 can be adjusted or the frame can be adjusted. A winch 7 is provided to move the frame 6 to the storage position, and wheels 6b are provided at the rear end of the frame 6. A plurality of box-shaped burners 8 are arranged in close contact with each other in the vertical and horizontal directions in the frame 6. This burner 8 consists of an upper cover 8a and a net-shaped heated body 8b below the cover 8a.

These frames 6 include a rectangular outer frame 10 and an outer frame 1.
It consists of a horizontal frame 11 and a plurality of vertical frames 12 installed at the center in the front-rear direction of 0, and an exhaust duct 13 is provided in the center. The burners 8 are placed in two vertical rows with their edges placed on the horizontal frame 11 and vertical frame 12.
They are arranged in multiple rows horizontally, with the front rows going up at the back and the back rows going down at the back, forming an inverted V-shape with a high center. Then, the left and right horizontal frames 1 of the duct 13 are
1, a pair of ignition flame diffusers 14 are fixed by bolts 15 screwed into nuts 15a fixed to the upper surfaces of the ignition flame diffusers 14. This ignition flame diffuser 14, as shown in FIGS. 3 and 4,
The ignition burner 16 is mounted in the direction along the horizontal frame 11, and an ignition burner 16 to which a spark plug 16a is attached is placed above the ignition flame diffuser 14. It is installed with a gap. This ignition burner 16 has a U bolt 16
b is attached to the horizontal frame 11 via a support member 17, and a nozzle 18 is screwed onto the upper part of the frame 11.
are connected, and an air intake port 20 is provided open on the side. The ignition flame diffuser 14 has an inner end 14
a is sealed, and the outer end 14b extends slightly inward from the edge of the frame 6 and is open, and is provided with a cylindrical portion 21 that opens at the upper center, and slits 22 extend in the axial direction on both sides. The flame generated by the ignition burner 16 is ejected from the slit 22 and the outer end 14b. A high-voltage current for ignition is supplied to the spark plug 16a through a conductor 23, and a device for operating the spark plug 16a is installed in the driver's seat S.

Furthermore, a cylinder storage device 25 that is moved up and down by a vertical cylinder 24 is attached to the front portion of the traveling vehicle body 1 via a pair of left and right parallel links 26 . In this storage device 25, a plurality of compartments (six in the figure) are formed inside a rectangular tank 27 with an open top and communicated with each other by partition plates, and water is stored in these compartments. LP gas cylinders 28 are housed in these compartments, and these cylinders 28 are connected to the burners 8 through supply pipes, hoses, valves, etc. (not shown), and LP gas is supplied to each burner 8. It is becoming more and more common. This water supplements the heat of vaporization of the LP gas consumed during combustion in the burner 8, and allows smooth vaporization in the cylinder 28. Furthermore, in the event that the fire from the burner 8 spreads to surrounding trees and causes a fire, water from the water tank 25a is sucked up and used for extinguishing the fire.

In the road surface heating device configured as described above, ignition is performed quickly and easily. That is, in the driver's seat S, open the valve of the fuel gas supply pipe of the ignition burner 16, and open the spark plug 16.
A spark current is passed through a to ignite the ignition burner 16. In the ignition flame diffuser 14 of the ignition burner 16, flame is ejected from the slit 22 and the outer end 14b, and the flame from the slit 22 is transmitted to the ignition flame diffuser 1.
toward the lower surface of the burner 8 before and after 4, the outer end 16b
The flame from is directed towards the bottom surface of burner 8 on the outside,
Each lower heated body 8b is heated. Therefore,
When the valve of the pipe supplying the LP gas to the burner 8 is opened, the LP gas is ejected from the burner 8, contacts the flame from the ignition burner 16, or the red-hot heated body 8b, and ignites. After confirming from the surroundings that each burner 8 is ignited, the valve is closed to stop the supply of LP gas to the ignition burner 16.

In the above process, each burner 8 is arranged vertically and horizontally on the frame 6, and the front and rear rows are inclined so that the cross section has an inverted V shape. It is inserted and installed along the Therefore, the ignition burner 16 directly faces the lower surface of each burner 8, and the ejected ignition flame is blown onto the heated body 8b of the burner 8, effectively heating the fuel gas ejected from the burner 8. ignite.

In the above, the slit 22 was provided in the ignition flame diffuser 14, but instead of this, a large number of small holes are made along the axial direction of the ignition flame diffuser 14, so that the flame can be directed to the side of the ignition flame diffuser 14. Alternatively, an opening may be formed that ejects water in a straight direction. Also,
In the above, we have described the case where the ignition process is performed manually, but the valve operation and plug energization may also be performed automatically, or a sensor etc. may be installed to confirm ignition. Good too.

[Effects of the invention] As detailed above, this invention provides a frame body that faces the road surface and forms a flat surface with respect to the road surface on the traveling vehicle body, and a plurality of box-shaped burners are arranged inside the frame body mutually. They are closely arranged, and an ignition burner for igniting each burner is arranged in the center of the frame, and the ignition burner has an opening for ejecting an ignition flame to the lower surface of each burner. Since the ignition flame diffuser is provided on the side, the ignition flame ejected from the opening formed on the side of the ignition flame diffuser is blown directly onto the lower surface of the burner.
Since each burner is ignited at the same time, it is necessary to provide an ignition burner for each burner, or to use a long ignition tool or an opening/closing mechanism to supply and stop fuel for each burner, as in the case where an operator manually ignites each burner one after another. No valves are required, simplifying the structure of the device. It also has the excellent effect of reducing the risk of fire or explosion due to mistakes, or falling due to worker carelessness, and saving labor for road surface repair work, making it more efficient and smooth.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of this invention, Fig. 2 is a front view thereof, Fig. 3 is an enlarged view of the main part of Fig. 2, and Fig. 4 is an enlarged view of the main part of Fig. 3. , FIG. 5 is a view taken along the - arrow in FIG. 3, FIG. 6 is a view taken along the - arrow in FIG. 5, and FIG. 7 is an enlarged sectional view of the main part of FIG. 1... Traveling vehicle body, 6... Frame body, 8... Burner,
16...Ignition burner.

Claims (1)

[Scope of utility model registration request] A frame body that faces the road surface and forms a flat surface with respect to the road surface is provided on the traveling vehicle body, and inside the frame body, a plurality of box-shaped burners are arranged closely together. An ignition burner is placed in the center to ignite each burner,
A road surface heating device characterized in that each of the ignition burners includes an ignition flame diffuser having an opening formed in a side portion for ejecting an ignition flame toward the lower surface of each burner.