JP2001026906A - Road surface heating working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and quickly heat the surface of a road surface to a fixed depth by forcedly feeding hot air generated by a burner device by a blower, and blowing it in beam shape into the voids of the road surface through a blowing port. SOLUTION: The fuel from a fuel tank 11 is burnt by a burner device 13 to generate hot air in a hot air generating chamber. A heating device 5 continuously communicating with the hot air generating chamber through a hot air feed piping 23 comprises a blowing port 27 for blowing the hot air toward a road surface 25 and a suction port 29 for sucking the hot air. A hot air pipe 31 is allowed to communicate with the hot air feed piping 23, and the hot air is forcedly fed by a blowing device 33 provided on the hot air feed piping 23. The hot air blown through the blowing port 27 in beam shape is carried in the voids among aggregates without diffusing in all directions because of the strong suction and the presence of a cover 39, and the hot air is forcedly sucked through the suction port 29. Since the hot air can be efficiently passed in the voids, the surface can be substantially simultaneously and quickly heated to a fixed depth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface heating machine suitable for drainage pavement.

[0002]

2. Description of the Related Art Generally, drainage pavement has a large number of voids, and rainwater or the like on the surface is drained downward through the voids. It is an important condition to have a large number of voids. .

[0003] Therefore, when the road surface is damaged and repaired,
The in-situ recycling method is known as one of the repair methods for resurfacing such that a large number of voids are created. In this construction procedure, heat is applied to a damaged road surface by a heating device, then scraped to a certain depth, and reshaped.

[0004]

In the in-situ recycling method, the road surface is heated by a heating device to a state where the road surface can be easily scraped over a predetermined depth. There is a heat source on the upper surface, and the surface layer is heated by transmitting the sub-heat from the surface to a certain depth in order.

[0005] For this reason, at a certain depth, it takes time to reach a temperature that is easy to loosen, which is not desirable in terms of work efficiency.

In this case, it is conceivable to set the heat source to a high temperature from the viewpoint of work efficiency. However, since the surface is exposed to a high temperature, the heat source may be deteriorated and may become difficult to reuse. Cause problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a road surface heating working machine capable of efficiently and quickly heating from a road surface to a certain depth.

[0008]

To achieve the above object, according to a first aspect of the present invention, there is provided a burner device for generating hot air, and a blowing device for forcibly sending out the hot air generated by the burner device. And a blow-off port for blowing hot air blown out by the blower into a gap formed on the road surface in a beam form.

Thus, the hot air generated by the burner device is blown out from the outlet to the road surface. At this time, the hot air is blown out in a vibrating manner by a blower in a beam form, so that the hot air is forced into a large number of gaps and is heated from the surface to a certain depth almost simultaneously by the heat. As a result, even at a predetermined depth, the temperature quickly reaches a temperature at which the surface can be easily scraped without having a large time lag with the surface.

According to a second aspect of the present invention, there is provided a suction port for forcibly sucking hot air blown out from the air outlet and passing through a gap formed on the road surface.

As a result, the hot air blown out from the air outlet efficiently passes through the gap on the road surface. As a result, it is possible to quickly heat the surface to a certain depth from the surface.

Further, according to the third aspect of the present invention, the outlet and the inlet are communicated via the hot air duct, so that the hot air sucked from the inlet is circulated again toward the outlet.

[0013] Thus, the hot air blown out from the outlet repeats the circulation returning to the inlet again, so that the hot air can be reused, which is very preferable in terms of thermal efficiency.

According to a fourth aspect of the present invention, a plurality of outlets and inlets are arranged as a set.

Thus, a plurality of hot air can be blown out and sucked in at the same time, so that the width of a heating area to be performed at a time can be widened and work efficiency can be greatly improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a body of a road surface heating work machine 3. A heating device 5 is provided at the bottom of the fuselage 1, and an engine 9 and a fuel tank 1
1. A burner device 13 for generating hot air is arranged and set, and can be run by front and rear running wheels 15. Of the traveling wheels 15, the rear traveling wheels 15 are driving wheels to which rotational power is given by a traveling motor 17 driven by power from the engine 9.

As shown in FIG. 2, the fuel tank 11 contains the fuel for the engine and the fuel for the burner device independently of each other by a partition wall 19, and is connected and connected to the engine 9 and the burner device 13, respectively. .

The burner device 13 generates hot air in the hot air generation chamber 21 by burning fuel from the fuel tank 11.

The hot air generating chamber 21 is connected to the heating device 5 via a hot air supply pipe 23.

The heating device 5 blows hot air toward the road surface and heats it with the heat. The heating device 5 blows out the hot air toward the road surface 25 forming the drainage pavement. It has a mouth 29.

The outlet 27 is of a nozzle tube type for blowing hot air in a beam shape, and is a hot air tube 31 which is long in the vehicle width direction.
A large number are arranged at predetermined intervals from below. The hot air pipe 31 is connected to and communicates with the hot air supply pipe 23, and the hot air is forcibly fed by a blower 33 provided in the hot air supply pipe 23. Hot air tube 31
A part of the vertical region of the hot air supply pipe 23 connected to the bellows is formed as a bellows-like expansion / contraction part 35 made of a material such as heat-resistant glass wool, and can expand and contract in the vertical direction.

The suction port 29 is disposed in front of and behind the outlet 27 in parallel with a partition 37 therebetween, and has a continuous U-shaped downward cross section which is long in the vehicle width direction. The suction port 29 also serves as a cover 39 which surrounds the front and side of the outlet 27 and the rear of the partition 37, and
The hot air from 7 is prevented from diffusing in all directions.

The suction port 29 is connected to a hot air return pipe 41 which is extended from a connecting portion connecting the hot air generation chamber 21 and the burner device 13 and serves as a hot air duct. The hot air return pipe 41 is provided with a suction device 43 for forcibly sucking hot air, and the suction device 43 is operated so that hot air can be sucked from the suction port 29. A part of the vertical region of the hot air return pipe 41 connected to the suction port 29 is a bellows-like expansion / contraction part 35 made of a material such as heat-resistant glass wool so that it can expand and contract in the vertical direction.

The outlet 27 and the inlet 29 are in a pair, and in this embodiment, they are arranged in three rows in the front-rear direction and can be moved up and down by a lifting device 45.

The elevating device 45 comprises a cylinder 47 supported by the body 1 and a piston 49 supported by the cover 39. For example, when the piston 49 is reduced, the suction port 29 and the air outlet 27 are The cover 39 can be moved up and down within the range of the expansion / contraction stroke of the expansion / contraction section 35. This allows the vehicle to travel without hindrance when not working.

According to the road surface heating working machine 3 configured as described above, the hot air generated by the burner device 13 is
As shown in (2), air is blown out from the outlet 27 toward the surface of the drainage pavement forming the road surface 25. At this time, the hot air is strongly blown out in the form of a beam, and the condition that the cover 39 prevents the spread in all directions is prevented.
It flows in the gap between the first material 1 and the aggregate 51, and is forcibly sucked from the suction port 29. Thus, when the hot air flows through the gap, it is heated almost simultaneously from the surface to a certain depth. As a result, the material is quickly heated from the surface to a certain depth to a temperature where it can be easily scraped without a large time lag.

On the other hand, the heated hot air returns through the hot air return pipe 41, is heated in the hot air generation chamber 21, and then repeats circulation which is sent out again to the outlet 27.
Hot air generation efficiency is improved.

Further, since the area to be heated at a time by the outlets 27 is arranged in a line in three rows, the working efficiency can be greatly improved.

[0030]

As described above, according to the road surface heating working machine of the present invention, the following effects can be obtained.

(1) Since hot air can be efficiently passed through the gap formed on the road surface, heating can be performed efficiently and quickly from the surface to a certain depth without a time lag.

(2) The efficiency of hot air generation is improved by circulation of hot air.

(3) Since a plurality of outlets and inlets are arranged as a set, a region to be efficiently heated at a time is expanded,
Work efficiency can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a road surface heating working machine according to the present invention.

FIG. 2 is a schematic plan view of FIG.

FIG. 3 is an operation explanatory diagram.

[Explanation of symbols]

 13 Burner device 25 Road surface 27 Air outlet 33 Blower

Claims (4)

[Claims] 1. A burner device for generating hot air, a blower device for forcibly sending the hot air generated by the burner device, and a hot air blown by the blower device in a beam direction toward a gap formed on a road surface. A road surface heating work machine comprising: a blow-off port for blowing air. 2. The road surface heating work machine according to claim 1, further comprising a suction port for forcibly sucking hot air blown out from the air outlet and passing through a gap in the road surface. 3. The work for heating a road surface according to claim 2, wherein the air outlet and the air inlet communicate with each other through a hot air duct, and the hot air sucked from the air inlet circulates toward the air outlet again. Machine. 4. The road surface heating work machine according to claim 2, wherein a plurality of the air outlets and the air inlets are arranged as a set.