JPH0213527Y2 - - Google Patents

Description

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

Heating devices are installed on work vehicles such as road heaters, repairers, and remixers used when repairing existing asphalt pavement surfaces. This heating device consists of an incandescent plate placed at the bottom of a chamber with multiple burners at predetermined positions.The burners are ignited to heat the incandescent plate, converting the combustion heat into infrared radiation, which heats the road surface. It is heated.

However, in the conventional heating device described above, since the upper plate and side plate of the chamber are made of a single plate, the chamber may be thermally deformed over time due to temperature differences between the inside and outside of the chamber. This may impair the aesthetic appearance, and in particular, the upper plate of the chamber is large and suffers from a large amount of thermal deformation.

In addition, the present applicant has filed Utility Application No. 58-153486 (Utility Model Application No.
60-62518), a movable heater having the same basic structure as the fixed heater is placed on the side of a fixed heater in which an incandescent plate is arranged at the bottom of a chamber equipped with a burner, and is movable to the left and right so that it can overlap freely. We devised a telescopic heating device that can be installed freely, but with this type of heating device, if the upper panel of the chamber is thermally deformed, not only will the aesthetics be impaired, but in some cases the telescopic function may be lost. There was a risk that the heating efficiency would be reduced due to leakage of hot air from the overlapping portion of the fixed heater and the movable heater.

The present invention was developed in view of the above circumstances, and even if the top plate of the chamber is thermally deformed, the aesthetic appearance will not be impaired, and in the case of a telescoping type, the telescoping function will not be impaired or the heating efficiency will be reduced. An object of the present invention is to provide a heating device for an asphalt pavement work vehicle that does not cause a drop in performance.

In order to achieve the above object, the present invention latches and attaches the exterior plate to the upper surface of the chamber using a locking means, and also uses the locking means to cover the upper surface of one side edge of the exterior plate from above. a locking member that prevents upward movement of the exterior plate while allowing thermal deformation in the direction along the one side edge; and a slot-shaped hole formed in the exterior plate along the one side edge. The bolt is inserted through the through hole of the bolt and screwed onto the upper plate of the chamber, allowing thermal deformation in the longitudinal direction of the through hole in the exterior plate while preventing thermal deformation in other directions. With this structure, even if the upper plate of the chamber is thermally deformed, the exterior plate on the upper plate maintains good appearance, elasticity, and heating efficiency.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 7.

What is shown in FIGS. 1 and 2 is a road surface heater, which is equipped with heating devices A ₁ , A ₂ , and A ₃ at the front, rear, and center portions, respectively. These heating devices
Since A ₁ , A ₂ , and A ₃ have the same basic structure, only the front heating device A ₁ will be explained with reference to FIGS. 3 to 7.
2 is a fixed heater, and 2 is a pair of left and right movable heaters provided on the sides of the fixed heater 1.

The fixed heater 1 has a rectangular box-shaped chamber 4 equipped with a burner 3 serving as a heat source at the upper center, and an incandescent plate 5 having approximately the same size as the chamber 4 at the bottom thereof. It consists of sub-incandescent plates 6 attached to the left and right sides of the incandescent plate 5, slightly shifted above the incandescent plate 5, and at the top of the chamber 4,
A pair of front and rear support pipes 7 are attached with their axes oriented in the left-right direction, and one end of each of a pair of left and right cylinder devices 8 disposed with their axes oriented in the left-right direction are fixedly attached.

Each of the movable heaters 2 is provided with a plurality of burners 9 at predetermined positions in the upper part, and has a lower part of a chamber 10 in the shape of a rectangular box, one side of which is movably fitted into the chamber 4 of the fixed heater 1. An incandescent plate 11 having approximately the same size as the chamber 10 is disposed at the same height as the incandescent plate 5 of the fixed heater 1, and the main body 12 and the main body 12
The extension part 14 has a structure that can be rotated and stored by a hinge 13 on the upper part of the main body part 12, and each support pipe 7 of the fixed heater 1 slides on the upper part of each main body part 12. A pair of front and rear guide pipes 15 that are freely inserted are attached via a connecting member 16, and the other ends of the pair of cylinder devices 8 are each fixedly attached. Then, by operating the pair of cylinder devices 8, each of the movable heaters 2 is placed with respect to the fixed heater 1 in a state in which each incandescent plate 11 thereof is superposed below each sub-incandescent plate 6 of the fixed heater 1. The heating width can be adjusted by moving it left and right.

Further, the chamber 4 of the fixed heater 1 has an upper plate 18 and front and rear side plates 19 attached to a framework formed by a cylindrical member 17, with the left and right sides open. A channel material 20 with the burner 3 provided in the center thereof is attached along the front-rear direction with its groove facing downward, and two exterior plates 21a and 21b are mounted on the upper plate 18. , covering almost the entire surface of the channel material 20 except for the attachment part, and
The channel material 20 is placed with a predetermined gap therebetween. Further, on the outer surface of the channel material 20, the upper surface of one side edge of the exterior plates 21a, 21b is covered from above, so that the exterior plates 21a, 21b are covered from above.
A locking means 22 that prevents the upward movement of 1b is provided in a protruding manner, while a locking means 22 is provided on one side of the exterior plates 21a and 21b (the side opposite to the channel material 20), which penetrates in the thickness direction and has a groove. As shown in FIG. 3, a through hole h is formed in the shape of a long hole in the front-rear direction, and a bot 23 whose shaft diameter is smaller than the hole diameter of the through hole h is inserted into this through hole h. A bolt 23 is fixedly attached to the upper plate 18. The locking member 22 and the bolt 23 are
It constitutes a locking means 24 that allows the exterior plates 21a and 21b to expand and contract due to heat and prevents them from falling off. In other words, the locking means 24 prevents the exterior plates 21a, 21b from displacing upward and in the left-right direction (width direction), thereby preventing them from falling off the chamber 4.
21b Thermal expansion and contraction in the front-rear direction (length direction) is through the through hole h
Also, within the length range of the exterior plates 21a, 21b
Thermal expansion and contraction in the left-right direction (width direction) of the exterior plate 21a,
Each becomes free within the gap secured between the side edge of 21b and the channel material 20.

Furthermore, the chamber 10 of the movable heater 2
is formed from a top plate 25 and a side plate 26, and the top plate 2
A channel material 27 on which the burner 9 is disposed is installed on the upper plate 25 with the groove facing downward in the left-right direction and front-rear direction, and a cylindrical member is provided on the side edge of the lower surface of the upper plate 25 on the fixed heater 1 side. A member 28 is provided.

In addition, 29 in the figure is a heat insulating material, which prevents heat loss from each chamber 4, 10 and prevents deformation of the chambers 4, 10 themselves due to heat. Further, 30 is a support member such as a flat bar for supporting and fixing each incandescent plate 5, 6, 11.

Therefore, in the heating device _A1 having the above configuration,
After operating the cylinder device 8 to move the left and right movable heaters 2 to the left and right with respect to the fixed heater 1 to appropriately adjust the heating width, each burner 3 and 9 is ignited to heat the road surface. At that time, a part of the hot air in the movable heater 2 escapes outward through the gap between the upper part of the fixed heater 1 and the cylindrical member 28 of the movable heater 2, and the chamber 4,
10 are thermally deformed over time by the hot air. However, exterior plates 21a and 21b are provided on the upper plate 18 of the chamber 4 of the fixed heater 1, where this thermal deformation has been a particular problem in the past.
These exterior plates 21a, 21b are arranged in a locking means 24 such that they can freely expand and contract in length and width direction due to heat.
Since the fixed heater 1 and the movable heater 2 are locked in place, and there is no inconvenient thermal deformation other than expansion and contraction in the length and width directions, the aesthetic appearance and expansion and contraction function of the movable heater 2 are maintained well, and the gap between the fixed heater 1 and the movable heater 2 is is kept constant and heat loss is kept low.

As explained above, the heating device of the present invention has an exterior plate placed on the upper plate of the chamber, and
It is composed of a locking member, a through hole, and a bolt, and allows the exterior plate to expand and contract due to heat, and is equipped with a locking means to prevent it from falling off.
Even if the upper plate of the chamber is thermally deformed, the aesthetic appearance will not be impaired, and in the case of a telescopic type, there is no risk that the telescopic function will be impaired or the heating efficiency will be reduced.

[Brief explanation of the drawing]

Figures 1 to 7 show an embodiment of the present invention, in which Figure 1 is a plan view of a road heater equipped with a heating device, Figure 2 is a side view of the same, and Figure 3 is a diagram of a road heater equipped with a heating device. FIG. 4 is an enlarged plan view, FIG. 4 is a half sectional view of the same, FIG. 5 is an enlarged sectional view of the main part, FIG. 6 is a partially cutaway side view of the fixed heater, and FIG. 7 is a partially cutaway side view of the movable heater. It is. 3...Burner, 4...Chamber, 5...Incandescent plate, 6...Sub-incandescent plate, 9...Burner, 10...Chamber, 11...Incandescent plate, 18...Upper plate, 21
a, 21b...exterior plate, 22...locking member, h...
...Through hole, 23... Bolt, 24... Locking means.

Claims (1)

[Scope of utility model registration request] A chamber having an upper plate and a side plate and having an open bottom surface, and a burner provided at the upper part of the chamber,
In the heating device for an asphalt pavement work vehicle, which is equipped with an incandescent plate attached to a lower part of the chamber, an exterior plate covering the upper plate is attached to the upper surface of the chamber, and the exterior plate is secured by a locking means. The locking means prevents the exterior plate from falling off the chamber, and the locking means prevents the exterior plate from moving upward by covering the upper surface of one side edge of the exterior plate from above. a locking member that allows thermal deformation in the direction along the one side edge; and a locking member that is inserted into an elongated through hole formed in the exterior plate in the direction along the one side edge, and is inserted into the chamber. The bolt is screwed onto the upper plate to allow thermal deformation in the longitudinal direction of the through hole of the exterior plate while preventing thermal deformation in other directions. A heating device for asphalt pavement work vehicles.