JPS6129774Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a repair heating device used when repairing a road surface or the like paved with an asphalt mixture.

In general, the surface of a paved road paved with an asphalt mixture often undergoes plastic deformation over time due to heavy traffic, etc., resulting in unevenness. Furthermore, in cold and snowy regions, tire chains and spiked tires are used on automobiles to prevent slips, and these tires abrade the paved surface and cause ruts. The occurrence of unevenness such as the ruts described above changes the pavement structure. As a result, the pavement structure loses its supporting force, the pavement surface tends to be destroyed, and the smooth operation of automobiles running on the pavement surface is hindered. In addition, puddles of water that form on uneven parts such as the ruts due to rain or the like cause a hydroplaning phenomenon, which greatly impairs the driving safety of automobiles. Therefore, in today's era where transportation is highly dependent on roads, repair and maintenance of road pavement surfaces has become an extremely important issue.

By the way, when repairing a paved surface, it is necessary to keep road regulations to a minimum and carry out construction work such as repair or restoration at the current location.

Normally, when repairing an asphalt pavement surface, a method is used in which the repaired surface is softened by heating and loosened, and an asphalt mixture is added and compacted.
However, when heating asphalt mixtures,
When heated above 500℃, the asphalt material deteriorates and becomes carbonized through combustion, rendering it useless as a pavement. For this reason, it is difficult to uniformly heat the rut-repaired surface of asphalt pavement over a wide area, and heating is usually done with care in a relatively narrow area, which is inconvenient and takes time and labor.

In view of the above circumstances, an object of the present invention is to provide a repair heating device that can uniformly heat and soften a repaired surface over a wide range of pavements so that loosening work can be easily performed.

The gist of this invention is to mount the front, middle and rear heater bodies on a self-propelled vehicle so that they can move up and down freely while maintaining a horizontal position, and to heat the repair surface in order with these heaters, and to release a small amount of heat from the repair surface between each heater body, thereby preventing overheating of the repair surface while allowing heating for a long time and allowing the heating to penetrate deeply and uniformly into the repair surface. As a result, in order to prevent the length of the heated portion in the direction of vehicle travel from becoming unnecessarily long, the front and rear heater bodies are configured to be movable horizontally, so that the repair surface can be heated uniformly over the entire heating portion, even if the repair surface has a small curvature.

Next, the present invention will be explained with reference to the drawings.

1 and 2 show an embodiment of a heating device for repair according to the present invention, and reference numeral 1 in the figures indicates a vehicle that can run on its own with front and rear tires 2, 3.
The main body frame 4 of this vehicle 1 is hollow and also serves as a duct. Further, a driver's cab 5 is provided in the upper part of the vehicle 1, and an engine 6 is mounted in the front part of the driver's cab 5. Engine 6 is chain 6
It drives the rear tires 3 via a and serves as a power source for various parts via a hydraulic pump (not shown). The vehicle 1 is provided with a blower 7 that pumps air to various parts through a duct in the main body frame 4, and an oil tank 8 for storing kerosene, heavy oil, or the like.

A front heater support member 9 is attached to the front of the vehicle 1 so as to be rotatable in a horizontal direction. A hydraulic cylinder 10 is disposed between the front heater support member 9 and the front end of the vehicle 1, and is a means for horizontally rotating the heater support member 9.

A front bracket 11 is attached to the front part of the front heater support member 9 so as to be movable in the vertical direction. Front heater A
A hydraulic cylinder 12 is disposed to move it up and down while keeping it in a horizontal state. A front heater support arm 13 is attached to the front bracket 11 so as to project forward and be rotatable in the vertical direction. A hydraulic cylinder 14 for rotating the heater support arm 13 in a vertical plane is disposed to rotate the front heater support arm 1 .
3 to an upper position, and transports and stores the front heater main body 16 to its storage position.

A front heater body 16 is attached to the lower part of the front heater support arm 13 . The width of this front heater body 16 is approximately the same as that of the vehicle 1.

A plurality of hollow pyramids 20 are regularly arranged in a grid pattern on the upper plate of the front heater body 16 and open into the front heater body 16 . Each pyramid 20
A burner 15 is attached to the top of each of the pyramids 20 and opens into the pyramid 20. The burner 15 is connected to the oil tank 8 by a hose or the like (not shown).
Each is connected to a duct (frame main body) 4.

Further, a heat sink 21 that is heated by the burner 15 and emits infrared rays is provided on the lower surface of the front heater main body 16 so as to cover the lower surface.

Heater extensions 22 are attached to the left and right sides of the front heater main body 16 configured as described above to form a front heater A. This heater extension 22 has a heat dissipation plate 21 on the lower surface, usually with a pitch of 250 mm, and by combining an appropriate number of these plates and attaching them to the front heater body 16,
A front heater A of any width can be formed.

Also, a rear heater B is installed at the rear of the vehicle 1 in a configuration symmetrical to that of the front heater A, but since they have the same configuration, the same parts will be given the same reference numerals and explained. Omitted.

These heater bodies 1 are located below the body frame 4 of the vehicle 1 between the front and rear heater bodies 16, 16.
An intermediate heater main body 17 is provided with a gap between the heaters 6 and 16. This intermediate heater main body 17 is
One end is supported by a plurality of hydraulic cylinders 18 attached to the vehicle 1 so as to be vertically movable. Heater extensions 22 are attached to the left and right sides of the intermediate heater main body 17 to form an intermediate heater C. The configuration of this intermediate heater C is also similar to that of the front heater A.
Since it is similar to the above, the same parts are given the same reference numerals and the explanation will be omitted.

The vehicle 1 uses tires because it runs on an existing paved surface and a heated surface, and the insides of the tires 2 and 3 are filled with special foam rubber to prevent punctures. In addition, the traveling speed of vehicle 1 is 1 to 5 m/min during work, and during forwarding.
20km/hour. Therefore, it has a speed reduction structure that allows selection of a wide speed change range. Further, steering is performed by power steering the front tires 2 using a hydraulic cylinder (not shown). Above burner 15
Adjustments, operations of the oil cylinders 10, 12, 14, etc. can be performed by operating an operation panel 23 in the driver's cab 5.

Next, the operation of the heating device according to the present invention will be explained.

First, remove the heater extension 22 and operate the hydraulic cylinders 14, 14 to transport and store the front and rear heater bodies 16, 16 to the storage position shown by the two-dot chain line in FIG. and the length as the transportation limit under the Road Traffic Act (width < 2.5m, length < 12m)
After the vehicle is brought to the construction site, it is self-propelled and transported to the construction site. At the construction site, the front and rear heater bodies 16, 16 are positioned horizontally, and the heater bodies 16, 16, 1
The heater extension 22, which is folded upward and stored, is attached to 7, and each heater A, B, and C has a predetermined width depending on the road surface to be repaired. Next, by operating the hydraulic cylinders 12, 12, 18, the distance between the lower surface of the heat sink 21 of each heater A, B, C and the pavement surface to be heated and softened is adjusted so that each heater A, B, C is in a horizontal state. Adjust while keeping the

After that, oil and air are sent to the burner 15, ignited, and the flame intensity is adjusted. Next, the heating device is run at a predetermined speed.

In this case, the heat sink 21 is heated by the burner 15 and generates infrared rays, thereby uniformly heating the road surface.
The heating device has a wide heating surface with front, rear, and intermediate heaters A, B, and C spaced apart from each other, and uniformly maintains an appropriate temperature by infrared rays generated from a heat sink 21 at an equal distance from the road surface. Since the road surface is heated, the repaired surface that this device passes through is softened uniformly over a wide width without burning. In other words, the repaired surface is first heated by the front heater A, and after the heater A passes through, the repaired surface is uniformly softened. Ru. Thereafter, it is reheated by the intermediate heater C, and after a little heat is radiated, it is heated again by the rear heater B. If such a large heating area were to heat the area continuously for a long time, the repaired surface would overheat and become inconvenient, but since there is a heat radiation section in the middle, heating of the repaired surface can be prevented. , the heating range penetrates deep into the repaired surface after being heated for a long time,
Uniform heating is performed over a wide range both in area and depth. In this regard, the entire repaired portion can be repaired in a short time using a subsequent repairer, rollers (not shown), and the like. In addition, if the part to be repaired is curved, the hydraulic cylinders 10, 10
By this operation, the front and rear heaters A and B can be moved horizontally as shown by the two-dot chain line in FIG. 2, so that the heating surface can be used effectively. Therefore, as with straight sections, the paved surface can be uniformly heated and softened without waste of heat radiation.

After the construction is completed, the width and length of the device are kept within the transport limit by reversing the above procedure and the device is transported to the next repair site by itself.

The heater extension 22 is supported at the tip of an arm (not shown) whose base end is rotatably attached to the top of each heater body 16, 16, 17, and this arm is rotated upward. The heater extensions can be rotated to store each heater extension.

As mentioned above, the heating device according to the present invention is
By moving the front, middle, and rear heater bodies up and down while keeping them horizontal, the repaired surface can be heated and dissipated in sequence, and heating can be performed over a wide range for a long time, thereby preventing overheating of the repaired surface. This enables uniform heating over a wide range by penetrating the heating depth deeply while preventing. As a result, even if the device is large-sized, the front and rear heater bodies can be rotated horizontally to follow the curve of the repaired surface with a small curvature, so the heating surface will not come off the repaired surface. Heating is possible and there is no heat radiation loss.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the heating device according to the present invention, FIG. 1 is a side view, and FIG. 2 shows the positional relationship of each heater in the device shown in FIG. 1. FIG. DESCRIPTION OF SYMBOLS 1...Vehicle, 6...Engine, 9...Front and rear heater support members, 10...Front and rear hydraulic cylinders, 11...Front and rear brackets, 12...Front and rear hydraulic cylinders, 13 ...Front and rear heater support arms, 15...Burner, 16...Front and rear heater bodies, 17...Intermediate heater body, 1
8... Hydraulic cylinder, 21... Heat sink, A... Front heater, B... Rear heater, C... Intermediate heater.

Claims (1)

[Scope of utility model registration request] A self-propelled vehicle, a front heater main body and a rear heater main body respectively attached to the front and rear parts of the vehicle via a horizontal turning means and a means for moving up and down while maintaining a horizontal state; A heating device for repairing paved roads, etc., comprising: an intermediate heater body vertically movably attached between the front and rear heating unit bodies.