JP2602689Y2 - Compaction machine with iron wheel heating and warming device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compaction machine equipped with a heating and warming device for an iron wheel of a road roller in connection with a rolling operation of asphalt pavement.

[0002]

2. Description of the Related Art In the initial stage of rolling work of asphalt pavement, in order to prevent the asphalt mixture from adhering to the outer peripheral surface of a steel wheel, conventionally, water is pressurized or gravity-sprayed on a steel wheel of a road roller. Is common. In cold regions, light oil or kerosene may be applied or sprayed on tires instead of water.

[0003]

The conventional method using water has disadvantages in that the density of the mixture decreases due to a decrease in the temperature of the mixture, and the texture of the pavement surface deteriorates. Light oil, kerosene, or the like is used to avoid a decrease in the temperature of the mixture, but in this case, if the amount of application and the amount of spray are not appropriate, there is a disadvantage that the mixture is cut back.

[0004] Accordingly, the present invention provides a compaction machine that can prevent the mixture from adhering to the iron wheel of the road roller in the initial stage of the asphalt pavement rolling work, increase the density of the pavement portion, and produce a pavement surface with a good texture. The purpose is to obtain.

[0005]

SUMMARY OF THE INVENTION The present invention has been conceived of for heating a wheel, which has not been performed at all, so that a heater supported on a body of a compacting machine is separated from an outer peripheral surface of an iron wheel, and a shaft of the wheel is rotated. By providing a non-flammable heat insulating cover on the outer peripheral surface separated from the outer peripheral surface so as to cover the heater and cover a part of the outer peripheral surface of the iron wheel. Solved the problem.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to one embodiment of the present invention, a gas infrared burner 3 is mounted on a body 1 of a compacting machine so as to extend away from the outer peripheral surface of an iron wheel 2 in the axial direction of the wheel. In the present embodiment, the distance between the outer peripheral surface of the iron wheel 2 and the burner was set to 10 to 20 mm.

The gas infrared burner 3 uses LPG,
Heat input of 7,000 kcal / h or more, heating area 12.4
× 49.4 cm and 612.56 cm 2 or more per piece were attached to each wheel, and two pieces were attached at intervals in the traveling direction. The wavelength of infrared energy radiated from the glowing surface is 2.6 μm or more at a surface temperature of 850 ° C. or more, and is directly absorbed by the iron wheel without warming the air. The working gas pressure for combustion is 0.5 kg / cm2 to 1.5 kg / cm
Use in 2. The high pressure combustion, high pressure burners, that is suitable for outdoor use for withstand the wind pressure of the outside air during combustion.

A heat retaining cover 4 is mounted on the outer peripheral surface of the vehicle body 1 so as to cover the burner 3 and further cover a part of the outer peripheral surface of the iron wheel. The heat retaining cover 4 is made of a steel outer shell, a non-combustible heat insulating sheet layer made of glass fiber, asbestos or the like stretched on the inner surface thereof, and an innermost surface layer made of a thin aluminum foil directly facing the outer peripheral surface of the iron ring 2. It consists of The thin aluminum foil prevents the heat insulating sheet from being stained by the dust that the wheels roll up.

[0009] A shallow side wall may be provided along the side edge of the heat retaining cover, the side edge being bent in a key shape in cross section. When the side walls are provided on both side edges, the cross section cut along the axial direction of the heat retaining cover has a U shape. In this case, the height of the side wall preferably covers the thickness of the outer peripheral portion of the iron wheel, and the portion for taking in air for combustion should be considered.

It is preferable that the heating device of this embodiment is operated while the wheels are lifted off the ground by a jack or the like and idlely rotated before starting the work. While asphalt paving surface is 130 ° C.-position, by heating the wheel peripheral to 50 ~ 60 ° C.-position, there is no adhesion to the wheels of the mixture material be started rolling compaction operation. When the rolling work is continued, the temperature of the wheel outer peripheral surface reaches about 86 to 90 ° C. in about 10 to 20 minutes. After that, even if the operation of the heating device is stopped, as long as the rolling work continues, the protective cover is used. The temperature is maintained and high-temperature compaction is possible.

[0011]

Conventionally, rolling work in cold regions has been limited in terms of time. This is because the mixture material easily adheres to the iron wheel during a low temperature period in a cold region, and high-density pavement cannot be performed. For this reason, the asphalt pavement
If it is unavoidable to pave at temperatures below 5 ° C,
Do not take special measures to obtain the specified density according to the situation.
Must be ". Heating of the present invention and
Compaction machines with thermal insulation shall be used under these conditions.
Can be.

The heating and heat retaining device of the present invention prevents the mixture from adhering to the wheels immediately after the start of the compaction work, and also enables high-density pavement and a finely textured pavement surface to be formed by high-temperature compaction. And

[Brief description of the drawings]

FIG. 1 is a side view of a compaction machine having a heating and warming device according to an embodiment of the present invention.

FIG. 2 is a plan view of a compacting machine having a heating and warming device according to an embodiment of the present invention; 1 body 2 iron wheel 3 gas infrared burner 4 heat insulation cover

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-49-28109 (JP, A) JP-A-5-83008 (JP, U) JP-A-61-146509 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) E01C 19/23

Claims (1)

(57) [Scope of request for utility model registration] 1. An outer surface (2) of an iron wheel (1)
Iron ring provided to extend in the axial direction away from the peripheral surface
Heater for heating (3) and cover the heater
Separated from the outer peripheral surface so as to cover a part of the outer peripheral surface.
Non-combustible heat insulating cover (4) provided on the outer peripheral surface
Compaction machine with iron wheel heating and warming equipment includingsmell
hand, The heater consists of a gas infrared burner, which keeps the heat
The cover (4) has an outer shell constituting an outer surface and an inner surface of the outer shell.
A non-combustible heat insulating material sheet attached thereto, and the heat insulating material sheet
Of aluminum coated on the surface facing the outer peripheral surface of
Characterized by a thin foil, Iron wheel heating and heat insulation
Compaction machine with stationary.