JPH0310164Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a heating device, such as a recycling heater, installed in an asphalt pavement (repair) working vehicle.

[Conventional technology]

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 a new asphalt mixture is laid on top of it. . Such repair work can be carried out either with a single multifunctional asphalt pavement work vehicle that has all of the above functions, or in combination with dedicated work vehicles that have one or more of the above functions. Although there are cases, 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 heating elements equipped with burners arranged in a horizontal and vertical plane in close contact with each other inside a rectangular support frame provided on the vehicle body. Often used are systems in which fuel such as liquefied petroleum gas is combusted in the burner, and the heat of combustion is passed through a heating element to heat the road surface.

[Problem that the invention attempts to solve]

However, in the above-mentioned conventional heating device, the mounting structure of each heating body to the support frame is such that each heating body 2 is arranged horizontally on the support frame 1 as shown in FIG. 9a, or
As shown in FIG. 9b or 9c, each heating element 2 is arranged in an inclined manner so that the front part is raised or the rear part is raised. Therefore, during work, hot air from the heating element 2 escapes from the side of the support frame 1,
There was a problem where the product could get caught in the hands of workers or roadside plants.

[Means for solving problems]

The present invention provides a support frame that faces the road surface and forms a plane facing the road surface on the traveling vehicle body, and a plurality of box-shaped heating bodies equipped with burners are installed inside the support frame, and the support frame is placed on the road surface. In a state where the support frame is facing toward the center, the parts closer to the center of the support frame are arranged close to each other and are inclined so that the parts closer to the center of the support frame are higher than the parts farther from the center of the support frame. It consists of an array of ducts that release hot air that heats the road surface by radiating from the body to the road surface.

[Effect]

In the above configuration, hot air from the burner is radiated onto the paved road surface through each heating element, heating and softening the paved road surface. Each heating element is tilted so that the part closer to the center of the support frame is higher than the part farther from the center of the support frame, so the hot air that is radiated from each heating element to the road surface and heats and softens the road surface is It flows towards the center of the support frame and escapes through the central duct. For this reason, hot air hardly escapes from the sides of the support frame.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Figures 1 to 8 show an embodiment of the present invention applied to a recycle heater.
is a traveling vehicle body consisting of a tractor. A pair of upper and lower support brackets 1 are provided at the rear end of this traveling vehicle body 10.
1 and 11 are provided protrudingly, and these support brackets 1
1, 11, a mount frame 13 is attached to the rear side thereof, to which a pair of left and right guide pipes 12, 12 extending vertically are connected, so as to be rotatable in a horizontal plane. The sliding members 14, 14 are inserted vertically and slidably. And these sliding members 14, 14
Attachment members 15, 15 that fit into vertically extending slits S formed on the rear surfaces of the guide pipes 12, 12 are provided in series on the lower end rear surfaces of the guide pipes 12, 12, respectively.
6 is the mounting seat 1 provided on the upper part near the front.
7 and 17 and the mounting members 15 and 15 are connected with pins so that they can be raised and lowered vertically. Further, the upper ends of the sliding members 14, 14 project upward from the guide pipes 12, 12, and a horizontal support frame 18 is connected to the projecting ends, and a winch 19 is fixed to the upper part of this support plate 18. installed. A pulley 20 is provided at the upper rear end of the front support frame 16, and a wire 21 wound around the winch drum of the winch 19 is wound around the pulley 20. The frame 16 can be raised and lowered up and down centering on the front support part.

Furthermore, a horizontal support bracket 22 is provided at a predetermined portion near the upper part between the guide pipes 12, 12.
The base ends of the cylinder bodies of the left and right hydraulic cylinders 23, 23 are attached to the lower surface of the support bracket 22 so as to be rotatable within a vertical plane along the front-rear direction, and each of the hydraulic cylinders 2
The tips of the piston rods 3 and 23 are connected to the connecting member 2.
It is connected to the mounting members 15, 15 via 4, 24. The hydraulic cylinder 23,
By the operation of 23, the front support frame 16 can be moved up and down.

Further, on the rear surface of the front support frame 16, a rear support frame 25 having the same basic structure as the front support frame 16 is provided.
are connected via a pair of left and right hinges 26, and a pair of left and right support rollers 27 are attached to the rear end of the rear support frame 25, the vertical position of which can be adjusted by rotating a handle 27a.

The front support frame 16 and the rear support frame 25 respectively include central frames 16a and 25a, and each central frame 1.
It consists of left and right extension frames 16b, 25b which are connected to the left and right sides of the central frames 16a, 25a via hinges 28, . Ducts 29 and 29 each having a rectangular cross section and extending vertically when the support frames 16 and 25 are folded down and facing the road surface R as shown by the solid lines in the figure are disposed in the central part of the square part, respectively. . In addition, each of the support frames 16, 2
Inside the heating element 5, there are a plurality of rectangular parallelepiped box-shaped heating elements 3.
The heating unit
A ₁ and A ₂ are formed. That is, in the illustrated example, each central frame 16a, 25a has eight rows of heating elements 30 on the left and right, two rows of heating elements 30, . 30, . Each is tilted.
A burner 31, . . . is attached to the upper part of each heating body 30, .

On the other hand, a cylinder stand 33 is attached to the front part of the traveling vehicle body 10 via a pair of left and right parallel links 32, 32 so as to be vertically movable. This cylinder stand 33 is
A rectangular bottom plate 33a, outer plates 33b provided on the front, rear, left and right side edges of the bottom plate 33a, and the bottom plate 3
It is installed in a U-shape on the top of 3a, and the rear outer plate 3
The inner plate 3 forms a rectangular inner frame part 34 together with the inner plate 3b.
3c, and the inside of the inner frame portion 34 is divided into a plurality of sections (six locations) by a strip plate 35a extending laterally and partition plates 35b extending back and forth.
There are 3 cylinders of liquefied petroleum gas in these compartments.
6,... are respectively accommodated, and these cylinders 3
6, . . . are connected to each of the burners 31, .

Further, an upper plate 33d is provided at the upper part between the outer plate 33b and the inner plate 33c of the cylinder stand 33, and these outer plate 33b, inner plate 33c, upper plate 3
3d forms a water tank 37 that surrounds the inner frame portion 34. In addition, this water tank 37
A water inlet 37a is provided at a predetermined position on the upper plate 33d, and water outlet ports 37b are provided at the left and right ends of the rear outer plate 33b, and a water outlet 37b is provided at a corner of the outer plate 33b at the front left side. A pipe-shaped liquid level gauge 37c whose lower end communicates with the inside of the water tank 37 is attached.

Further, the cylinder stand 33 is provided with an elevating means 38 for raising and lowering it. That is, a pair of left and right brackets 3 are provided at the front of the traveling vehicle body 10.
9, 39 are provided protrudingly, and these brackets 39, 3
9, a cylinder body 40a of the hydraulic cylinder 40;
However, the engaging members 40b, 40b provided on the sides thereof are locked to the brackets 39, 39, and are attached so as to be swingable back and forth, and this hydraulic cylinder 40
The tip of the piston rod 40c is connected via a pin to a mounting seat 41 provided on the rear surface of the rear outer plate 33b of the cylinder stand 33. By operating the hydraulic cylinder 40, the cylinder stand 33 is moved up and down between the position shown by the solid line in FIG. 5 and the position shown by the two-dot chain line.

Note that the upper link members 32a, 32a of each parallel link 32, 32 have a bent shape;
This is to prevent the rear one of the two rods 32b, 32b connecting the two rods from coming into contact with the brackets 39, 39, etc. of the hydraulic cylinder 40.
Further, on the left and right sides of the outer plate 33b at the rear of the cylinder stand 33, angle members 42, 42 for engaging chains (not shown) used to prevent the cylinders 36, . . . from tipping are erected. has been done.

Further, 43 indicates the vehicle body 10 that runs on the mount frame 13.
A swinging hydraulic cylinder that rotates left and right against the
44 is a heat shield plate that prevents heat from the road surface R from radiating to the traveling vehicle body 10, and 45 is a drain hole.

Therefore, when heating the existing paved road surface R, while the vehicle body 10 is running forward in the state shown in the figure, liquefied petroleum gas is sent from the cylinders 36,... to the burners 31,... and combusted. The hot air generated by this is blown onto the road surface R through the heating elements 30, . . . to heat and soften the road surface R. Each heating body 30,
As mentioned above, the ones in the front row are tilted so that the rear end is higher than the front end, and the ones in the rear row are tilted so that the front end is higher than the rear end, so that the heating elements 30, ... The hot air is supplied to each heating element 3.
It flows diagonally downward toward the central portion of each support frame 16, 25, which is a raised area of 0, heats the road surface R, and escapes from each central duct 29, 29. Therefore, there is no longer any risk of hot air escaping to the side and blowing onto workers or roadside plants, as was the case in the past.
Improves work efficiency and safety.

In addition, after the heating work is completed, each extension frame 16b, 25b is folded upward, and each support frame 1
6 and 25 are raised by the operation of the hydraulic cylinders 23 and 23, and by the operation of the winch 19, they are erected and stored as shown by the two-dot chain line in FIG. Further, when replacing the cylinders 36, etc., the cylinder stand 33 can be lowered by the lifting means 38 to the height shown in Fig. 2, and can be raised when going up a slope. .

By the way, in the above embodiment, each heating body 3
The inclined state of 0, ... is not limited to the one shown in the figure, and the parts near the center of each support frame 16, 25 are inclined so as to be higher than the part far from the center of each support frame 16, 25. It is fine as long as it is available. That is, for example, the heating bodies 30,... may be arranged so that their longitudinal directions face left and right, and they may be tilted so that the portions closer to the center of each support frame 16, 25 are higher in the left and right direction. Any structure is sufficient as long as it escapes through each duct 29, 29 in the center of each support frame 16, 25.

[Effect of idea]

As explained above, the heating device for the asphalt paving work vehicle of the present invention has a plurality of heating elements mounted on the support frame so that the part closer to the center of the support frame is higher than the part farther from the center of the support frame. Because they are arranged at an angle and have a duct for discharging hot air in the center of the support frame, hot air rarely escapes to the sides of the heating device, preventing hot air from blowing onto workers or roadside plants. It doesn't cost anything,
Improves work efficiency and safety.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a recycle heater to which an embodiment of the present invention is applied, Fig. 2 is a side view of the same partially shown in section, Fig. 3 is a view taken in the direction of - arrow in Fig. 2, and Fig. 4 is a plan view of a recycle heater to which an embodiment of the present invention is applied. A plan view of the cylinder stand, FIG. 5 is the same side view, FIG. 6 is the same partially cutaway plan view, and FIG. 7 is the same side view as in FIG. 6.
8 is a cross-sectional view in the direction of the arrows, and FIG.
Figures a to c are schematic diagrams for explaining the prior art. 10... Traveling vehicle body, 16... Front support frame, 25
... Rear support frame, 29 ... Duct, 30 ... Heating body, 31 ... Burner.

Claims (1)

[Scope of utility model registration request] A support frame that faces the road surface and forms a plane facing the road surface is provided on the traveling vehicle body, and inside the support frame, a plurality of box-shaped heating bodies equipped with burners are installed. In a condition where
The parts of the support frame closer to the center are inclined and arranged closely to each other so that the parts closer to the center of the support frame are higher than the parts farther from the center of the support frame. A heating device for an asphalt pavement work vehicle, characterized in that a duct is provided to release hot air that has heated the road surface.