JPS644890Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a heating device for a road surface, etc., which is used when repairing an asphalt-paved road surface, etc.

<Prior Art> When asphalt pavement is repaired, the repaired surface is usually heated and softened using a heating device and then regenerated and repaired. A conventional example of such a heating device is one that heats the asphalt pavement by a heating device attached to the lower part of a vehicle that runs on the asphalt pavement.

However, in such conventional heating devices, a heater with a constant width in the vehicle width direction is attached to the bottom of the vehicle, so no matter how much the heater capacity is improved, the road surface width that requires heating is If it is narrower than the width of the road surface, it may be impossible to heat things outside the road surface or due to obstacles such as guardrails, and conversely, if the road surface width is too wide, the heating device may not be able to run through the entire road. After that, the remaining portion had to be heated again, and in this case, it was difficult to uniformly heat the asphalt pavement.

Also, Utility Application No. 56-151765 (Utility Application No. 58-59811)
As disclosed in No. 1), there are some systems in which side heaters are attached to both sides of the heater body according to the width of the road surface. However, in this case, the extension must be removed in order to transport the heating device within the transport limits of the Road Traffic Act (width < 2.5m length < 12m), and these installation and removal tasks require a lot of work. This required a lot of effort and time, leading to a decrease in work efficiency.

<Summary of the invention> The present invention was devised in view of the above-mentioned conventional problems, and includes heaters arranged at a predetermined distance from each other at the front, approximately center, and rear of the vehicle. , lateral heaters are respectively disposed on the sides of the heater, and a moving device is provided to move each lateral heater in the vehicle width direction, and the lateral heaters are arranged in accordance with the pavement width to be heated. By protruding to the side of the vehicle, uniform heating can be achieved simply by running the heating device.

<Example> The present invention will be described below based on an example shown in FIGS. 1 to 3.

In FIG. 1, numeral 1 is a vehicle that can run on its own using tires 3 and 4 attached to the rear of a chassis 2. As shown in FIG.
Further, a driver's cab 5 is provided on the upper part of the vehicle chassis 2, and the front part of the driver's cab 5 drives the rear tires 4 via a chain 4a, and also connects the power source of each part via a hydraulic pump (not shown). An engine 6 is provided.

In addition, a front heater support member 7 is provided at the front of the chassis 2.
is mounted so that it can rotate freely in the horizontal direction. Between this front heater support member 7 and the front end of the chassis 2,
A hydraulic cylinder 8 is provided for horizontally pivoting the heater support member 7. Further, a front bracket 9 is attached to the front part of the front heater support member 7 so as to be freely movable in the vertical direction. A hydraulic cylinder 10 is provided.

Further, a front heater support arm 11 is attached to the front bracket 9 so as to be freely rotatable in the vertical direction so as to protrude toward the front of the vehicle. A hydraulic cylinder 12 for rotating the support arm 11 in a vertical plane is disposed between the front heater support arm 11 and the front upper part of the vehicle chassis 2, and lifts the support arm 11 to an upper position. The front heater A supported by 11 is transported to its storage position (shown by chain lines in FIG. 1).

The front heater A is configured by installing two heaters 13 in parallel in the vehicle traveling direction. Each heater 13 has a box-shaped main body 14 with a U-shaped cross section that is open on the bottom and on both vehicle sides and is attached to the support arm 11. A burner 15 that injects flame downward is attached to an opening formed in the center of the box-like body 14, and this burner 15 is connected to a fuel tank 16 that supplies fuel and also supplies air for combustion. Blower 17
It is connected to the. The lower ends of both side walls of the box-shaped main body 14 are bent to form tracks 19 on which rollers 18 (described later) roll.

Further, side heater bodies 0 each having a U-shaped cross section and having an open bottom surface and a closed outer end are attached to openings on both sides of the box-like body 14. That is, the inner end side of each side heater main body 20 is attached to the opening of the box-shaped main body 14, and the roller 18 rotatably attached to the side heater main body 20 is attached to the orbit of the box-like main body 14. 19
Place it on top. A burner 21 is attached to an opening provided in the center of each side heater body 20, and the burner 21 is connected to the fuel tank 16 and blower 17. Further, hydraulic cylinders 22 as moving devices are fixed to both sides of the upper wall of the box-like main body 14, and piston rods of the hydraulic cylinders 22 are attached to the upper wall of each side heater main body 20. Here, the side heater main body 20 and the burner 21 constitute a side heater.

The rear heater B attached to the rear of the chassis 2 and the intermediate heater C attached to the lower part of the chassis 2 via the vertical hydraulic cylinder 23 have the same configuration as the front heater A, so they are the same. Reference numerals are given and explanations are omitted.

Incidentally, the adjustment of the burners 15 and 21 and the operation of the hydraulic cylinders 8, 10, 12, 22, etc., are performed from the driver's cab 5.
This is done by operating the operation panel 24 at .

Next, the operation of the heating device having such a configuration will be explained.

First, the side heater main body 20 is attached to the hydraulic cylinder 2.
1, the front and rear heaters A and B are stored in the box-like main body 14 by operating the hydraulic cylinder 12, and the front and rear heaters A and B are transported to the storage position shown by the two-dot chain line in FIG. After keeping the width and length within the transport limits under the Road Traffic Act (width < 2.5m, length < 12m), the vehicle will self-propelled to the construction site.

At construction sites, front and rear heaters A,
B is positioned horizontally, and the side heaters are made to protrude from the box-shaped main body 14 to the sides of the vehicle, and each of the heaters A, B, and C has a predetermined width depending on the road surface to be repaired.
Thereafter, fuel and air are supplied to the burners 15 and 21 to ignite them and adjust the flame intensity. Next, the heating device is run at a predetermined speed to heat and soften the asphalt pavement surface.

After the construction work is completed, the heating device is transported to the next construction site by reversing the above procedure, with the width and length of the heating device set as the transport limit.

As described above, according to the present embodiment, by operating the operation panel 24, the road surface can be heated and softened according to the width of the repaired road surface, and this work can be performed efficiently in a short time. Furthermore, since the side heater main body 20 is housed within the box-shaped main body 14, the overall heater can be made more compact. Furthermore, since the heaters including the heater 13 and the side heater main body 20 are arranged at a predetermined distance from the rear, center, and rear of the vehicle, the front heater A The heated asphalt pavement is only slightly cooled on its surface immediately after the front heater A has passed. After the asphalt pavement is reheated by the intermediate heater C, only the surface thereof is slightly cooled, and then further heated by the post-heater B.

In this way, the asphalt pavement can be heated without raising the temperature of the asphalt pavement too much, so it is possible to perform good heating to a deeper part than in the conventional example, sufficiently and in a short time without overheating the asphalt pavement.

Incidentally, in the above embodiment, the burners 15, 21
We decided to heat the repaired surface directly, but
A heat radiating plate that generates infrared rays may be provided on the lower open surface of each main body 14, 21, and the repaired surface may be heated by the combustion gas of the burner and the infrared rays. In addition, the box-shaped main body 1
Since both sides of the heater 4 are open, the burner 15 alone may be used as the heat source without providing the burner 21 in each side heater. In addition, the side heater
Although it was arranged to be stored in the heater 13,
It may be provided separately from the heater 13 at the front or rear side.

<Effects of the invention> As explained above, in the present invention, the side heater is provided on the side of the heater so that it can be moved in the vehicle width direction by a moving device, so that it can be moved according to the width of the repaired surface to be heated. The heating width can be selected as appropriate, and the operation can be performed efficiently.

In addition, heaters with lateral heaters are placed at a predetermined distance at the front, center, and rear of the vehicle, allowing the asphalt pavement to reach deep areas without overheating. And it can be heated in a short time.

[Brief explanation of drawings]

FIG. 1 is a side view of a heating device showing an embodiment of the present invention, FIG. 2 is a sectional view of a main part, and FIG. 3 is a view taken along the - arrow in FIG. 13... Heater, 14... Box-shaped main body, 15,2
1...burner, 18...roller, 19...orbital,
20... Side heater body, 22... Hydraulic cylinder.

Claims (1)

[Scope of utility model registration request] Heaters for heating the asphalt pavement are arranged at a predetermined distance from each other at the front, approximately center, and rear of the vehicle, and lateral heaters are arranged at the sides of the heaters, respectively. 1. A heating device for paved roads, etc., characterized in that a moving device is provided for moving each side heater in the vehicle width direction.