JP2984994B2 - Partition frame for hot asphalt mixture carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition frame for a hot asphalt mixture carrier.

[0002]

2. Description of the Related Art As is well known, a hot asphalt mixture used for road lining is manufactured in an asphalt mixture plant, and immediately or after being stored in an insulated storage device, is transported to a construction site by a transport vehicle such as a dump truck. Transported to Normally, when asphalt mix is installed on the road,
It is required that the temperature be, for example, approximately 140 ° C. or higher.

[0003] When the construction site is far away from the mixture plant, or due to traffic congestion, it may take a long time for the dump truck loaded with asphalt mixture to arrive at the construction site. In the meantime, the heat of the asphalt mixture is dissipated and the temperature is reduced. Therefore, the asphalt mixture when shipped from the mixture plant is at a temperature sufficiently higher than the construction temperature, for example, 170, in consideration of the temperature decrease during transportation. It is necessary to keep it heated to about ° C. However, such a high-temperature heat treatment promotes loss of thermal energy, and tends to cause thermal deterioration of the asphalt mixture. In order to avoid this, it is only necessary to avoid a temperature drop due to heat radiation of the asphalt mixture during transportation.

[0004] As one means for avoiding a decrease in the temperature of the asphalt mixture, it has been proposed that a carrier of a vehicle that transports the asphalt mixture has a heat retaining structure. For this purpose, the walls of the cargo bed should be kept warm, but the cargo bed of the vehicle itself must be modified and a special structure must be used to make it heat-insulated, which complicates the structure. In addition, there is a disadvantage that the production cost is high.

As another means, it has been proposed to use a container for transporting asphalt having a heat insulating structure on a wall surface, separately from a cargo bed of a vehicle. However, according to this, a special container dedicated to transportation must be prepared separately from the bed of the vehicle, and the vehicle itself must be modified.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a process for loading and transporting an asphalt mixture on a carrier of a vehicle.
An object of the present invention is to prevent a temperature decrease of an asphalt mixture with a simple configuration.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a bottom wall, side walls movably connected to both side edges of the bottom wall, and an upper wall movably connected to the upper end of each side wall. A partition frame made of a material capable of maintaining mechanical strength against the heat of the asphalt mixture, wherein the bottom wall, the side wall and the upper wall are formed of a material whose bottom wall and side wall are made of asphalt composite material. The cargo carrier is mounted on the carrier such that a space is interposed between the bottom surface and the side surface of the carrier, and the upper end opening of the space between the side wall of the partition frame and the side surface of the carrier is a rear edge of the upper wall. The entirety or part of the surface of the asphalt mixture loaded in the space surrounded by the bottom wall and both side walls of the partition frame is covered by the upper wall.

[0008] The present invention is characterized in that the opening at the upper end of the space between the side wall of the partition frame and the side surface of the carrier is closed by inclining the side wall of the partition frame with respect to the side surface of the carrier.

[0009]

A space is formed between the bottom and side walls of the partition frame and the bottom and side surfaces of the carrier, and an air layer exists in the space. Since the upper end of this space is closed by the rear edge of the upper wall or the upper end of the side wall, the movement of air inside is restricted. Therefore, this air layer exhibits a heat insulating effect, and it is possible to prevent a decrease in the temperature of the asphalt mixture loaded in the partition frame.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG.
In the figure, reference numeral 1 denotes an asphalt mixture transporting vehicle, for example, a dump truck, which is constituted by a cab 2, a vehicle body 3, a loading platform 4, and the like. The loading platform 4 is constituted by wall surfaces such as side surfaces 5 and a bottom surface 6 on both sides, an openable back surface 7 and a front surface 8. The loading platform 4 is tiltable with respect to the vehicle body 3, whereby the back surface 7 is opened by this inclination, and the loaded asphalt mixture is slid down from the rear end of the loading platform 4. These configurations are not particularly different from ordinary dump trucks.

Reference numeral 11 denotes a partition frame according to the present invention, as shown in FIG. 1, a bottom wall 12, a pair of side walls 13 connected to both side edges of the bottom wall 12 so as to be able to undulate, and an upper end of each side wall 13. And a pair of upper walls 14 connected to each other so as to be able to move up and down. The bottom wall 12, the side wall 13 and the top wall 14 are made of a material capable of maintaining mechanical strength against heat of the asphalt mixture,
For example, a plywood plate, a galvanized plate, or a material obtained by laminating both may be used. 15 is bottom wall 12 and side wall 13
The hinge 16 connects the side wall 12 and the upper wall 14.

As shown in FIG. 2, the partition frame 11 has a bottom wall 12 and a side wall 13 formed on the loading platform 4 such that spaces 17, 18 are interposed between the bottom surface 6 and the side surface 5 of the loading platform 4, respectively. Will be installed. The partition frame 11 may be always mounted on the carrier 4 or may be mounted when transporting the asphalt mixture. The partition frame 11 is always in FIG.
The side wall 13 and the upper wall 14 are folded as shown in FIG.
At the time of use, it may be mounted on the carrier 4 as it is.

The partition frame 11 mounted on the carrier 4 first raises the side wall 13 with respect to the bottom wall 12 and further raises the upper wall 14 with respect to the side wall 13. As a result, as shown in FIG. 5, both the side wall 13 and the upper wall 14 stand upright from the side edges of the bottom wall 12. Therefore, since the upper part of the bottom wall 12 is opened, the asphalt mixture is dropped from the plant from this open portion to be loaded in the partition frame 11.

Thereafter, as shown in FIG. 2, the upper lid 14 is folded down so as to cover the surface of the asphalt mixture 19 loaded. At this time, the upper end opening of the space 18 between the side wall 13 of the partition frame 11 and the side surface 5 of the loading platform 4 is
Closed at 4A. As a result of this closing, the space 17 between the bottom surface 6 and the bottom wall 12 is also closed.

In this case, when an elastic body 20 such as rubber is attached to the edge of the rear end portion 14A and this elastic body 20 is elastically in contact with the inside of the side surface 5 of the carrier 4, the space It is convenient that the upper end opening portion 18 is airtightly closed.

By closing the spaces 17 and 18 as described above, the movement of the air interposed in the spaces 17 and 18 is restricted. Accordingly, the air has a heat insulating effect, and a decrease in temperature during transportation of the asphalt mixture 19 loaded in the partition frame 11 can be reduced. And since the partition frame 11 maintains the mechanical strength against the heat of the asphalt mixture, it does not deform or melt due to the heat.

If necessary, the interior of the spaces 17 and 18 may be filled with a suitable heat insulating material such as glass wool, rock wool, felt or the like. According to this, the heat conduction between the asphalt mixture and the side surface 5 and the bottom surface 6 of the loading platform 4 is prevented, and the temperature reduction of the asphalt mixture is better prevented. It is not always necessary to use only one partition frame 11, and a plurality of partition frames 11 may be mounted on the carrier 3 such that the ends thereof are sequentially abutted.
According to this, it is not necessary to use the partition frame 11 having a length corresponding to the length of the carrier.

The asphalt mixture 19 is placed in the partition frame 11.
, The bottom wall 12 and the side wall 13 of the partition frame 11 may be distorted outward due to the weight of the asphalt mixture 19. In order to avoid this, a reinforcing member 21 may be attached to the outer surfaces of the bottom wall 12 and the side wall 13.

When the asphalt mixture is transported by the dump truck, the side surface 5 of the bed 4 of the dump truck is exposed to much outside air, so that the asphalt mixture is easily radiated from the side surface 5. Therefore, heat radiation of the asphalt mixture can be sufficiently avoided only by forming the space 18 between the side surface 5 and the side wall 13 of the partition frame 11. However, if it is necessary to avoid heat radiation caused by the front and rear surfaces of the cargo bed 4 coming into contact with outside air, the following countermeasures may be taken as necessary.

That is, in order to avoid the heat dissipation of the asphalt mixture from the front surface of the partition frame 11, as shown in FIG.
An auxiliary frame 22 having an internal space is interposed between the front surface 8 and the front surface of the partition frame 11. In this case, if the auxiliary frame 22 is set to have a length that covers the entire width of the front surface 8, the space 1
8 is closed by the auxiliary frame 22. Reference numeral 23 denotes a lid for closing the upper surface of the auxiliary frame 22.

Since the interior of the auxiliary frame 22 is a space, the air inside has an insulating effect. Thereby, the temperature drop of the asphalt mixture from the front surfaces of the partition frame 11 and the space 18 is reduced. A plurality of auxiliary frames 22 may be provided as necessary. Further, in order to prevent the heat of the asphalt mixture from dissipating from the rear surface of the partition frame 11, an auxiliary frame may be similarly installed between the partition frame 11 and the back surface 7 of the loading platform 4. According to this, a space by the auxiliary frame 22 is formed between the rear surface of the partition frame 11 and the rear surface of the loading platform 4, and heat radiation of the asphalt mixture from the rear surface is avoided.

Instead of using the auxiliary frame 22, a front wall 13A may be provided on the front surface of the partition frame 11 so as to be undulated and closed as shown in FIG. In that case, the front wall 1
3A and the front surface 8 of the loading platform 4 do not come into contact with each other.
A space similar to the space 18 may be formed, and for that purpose, the tip of the upper wall 14 of the partition frame 11 is extended forward as shown in FIG. If the leading edge of the extension portion 14B is in contact with the inside of the front surface 8 of the carrier 4, the front wall 13A of the partition frame 11 can be formed.
A space is formed between the carrier 4 and the front surface 8 of the carrier 4. Due to the presence of this space, heat radiation from the front surface of the asphalt mixture is avoided.

Similarly, also for the rear of the partition frame 11,
Instead of providing the auxiliary frame 22, a rear wall is provided on the rear surface of the partition frame 11 so as to be able to undulate in the same manner as the front wall 13A shown in FIG. 9, and the rear end of the upper wall 14 is extended rearward. A space may be formed between the wall and the back surface 7 of the carrier 4. Thereby, heat dissipation of the asphalt mixture from the rear surface of the partition frame 11 is avoided.

In the embodiment shown in FIG. 2, a pair of upper walls 14 are provided.
Thus, almost the entire surface of the loaded asphalt mixture 19 is covered. For that, each upper wall 14
Needs to be approximately half the length of the bottom wall 12. In this way, when loading the asphalt mixture, the upper wall 14
5 is considerably high when it is raised as shown in FIG. 5, and in some cases, its tip may collide with the plant.

To avoid this, the upper wall 14 may be set short. However, in that case, the surface of the loaded asphalt mixture 16 may not be able to be entirely covered in a state where the upper wall 14 is folded down. In that case, a portion that cannot be covered by the upper wall 14 may be supplementarily covered with a covering material 23 such as a hood. FIG. 7 shows this state.

In the example described above, the space 18 is closed by the rear edge 14A of the upper wall 14. According to this, the rear end of the upper wall 14 must be extended. FIG. 8 shows an improved configuration. This is partition frame 1
The configuration is such that one side wall 13 is turned down toward the inside of the side surface 5 of the carrier 4. Thereby, the upper end of the space 18 is the side wall 1
3 will be closed by the tip. Therefore, there is no need to close the rear end of the upper wall 14.

[0027]

As described above, according to the present invention, when asphalt mixture is loaded on the carrier of a dump truck and transported, the asphalt mixture is loaded inside a partition frame having a space around it. Therefore, it is possible to easily prevent the temperature drop of the asphalt mixture during transportation,
Therefore, the asphalt mixture can be transported to the construction site without increasing the heating temperature of the asphalt mixture when loading from the plant, so that the thermal energy required for heating the asphalt mixture can be easily saved and the asphalt mixture can be easily saved. This has the effect that thermal deterioration of the composite material can be avoided.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing an embodiment of the present invention.

FIG. 2 is a side view of a main part showing a loaded state.

FIG. 3 is a perspective view showing a folded state.

FIG. 4 is a front view showing a state where a part of the dump truck is cut open.

FIG. 5 is a side view showing a state at the time of loading.

FIG. 6 is a partial perspective view showing a use state of the auxiliary frame.

FIG. 7 is a side view showing another embodiment of the present invention.

FIG. 8 is a side view showing still another embodiment of the present invention.

FIG. 9 is a partial perspective view showing an embodiment of the present invention.

[Description of Signs] 1 Dump truck 4 Loading bed 5 Side surface 6 Bottom surface 7 Back surface 8 Front surface 11 Partition frame 12 Bottom wall 13 Side wall 14 Upper wall 14A Rear edge of upper wall 17 Space 18 Space 19 Hot asphalt mixture

Claims (1)

(57) [Claims] 1. A bottom wall comprising: a bottom wall; a pair of side walls connected to both sides of the bottom wall so as to be undulating; and a pair of upper walls connected to the upper end of each side wall so as to be undulated. The side wall and the upper wall are made of a material capable of maintaining the mechanical strength against the heat of the asphalt mixture, and the bottom wall and the side wall are connected to the bottom surface and the side surface of the bed of the asphalt mixture transport vehicle, respectively. Asphalt mounted on the loading platform such that a space is interposed therebetween, and an upper end opening portion of the space between the side wall and the side surface of the loading platform is closed at a rear edge of the upper wall. A partitioning frame for a hot asphalt mixture carrier, wherein the whole or part of the surface of the mixture is covered with the upper wall.