JPH0448882B2 - - Google Patents

Description

Detailed Description of the Invention <Technical Field> The present invention relates to an apparatus for storing an asphalt mixture (hereinafter abbreviated as composite material).

<Prior art> The composite materials used as paving materials for roads, etc. are crushed stone,
It is made by heating and mixing materials such as sand, stone powder, asphalt, etc. in a predetermined ratio.For example, in order to properly level and compact the mixture when paving roads, the temperature of the mixture must be kept at 140℃ or more. It was necessary to maintain the temperature at 160℃.

By the way, since the mixed material is transported from the asphalt plant where the mixed material is manufactured using dump trucks, etc., in order to maintain the mixed material at the specified temperature, it is necessary to level the material and complete compaction within about one hour after heating and mixing. Even if measures are taken to prevent the temperature of the mixture from dropping, such as by placing a sheet over the mixture on the track, the mixture should be leveled and compacted within about 2 hours after heating and mixing. It is desirable that it be completed.

Repair work for small areas of asphalt pavement, such as restoration work after burying gas pipes, water pipes, or electric cables, requires a small amount of composite material and is often spread manually, so the leveling ability is limited. When transporting mixed wood using a small, commonly used dump truck with a loading capacity of 8 to 10 tons, the mixed wood cannot be leveled within two hours, and the mixed wood must be discarded when it reaches a specified temperature. It was impossible. In addition, in order to supply the required amount of composite material, it is necessary to load the composite material onto a small dump truck or to load a small amount of composite material onto a large dump truck, which is uneconomical as transporting the material over long distances increases freight costs. It was hot.

In particular, for road paving work in Tokyo, the mixed materials are transported from asphalt plants in the suburbs, which poses problems such as long transport distances and poor traffic conditions, which lengthens the transport time and increases freight costs. .

In addition, in conventional mixed wood storage devices, the storage silos that store the mixed wood are large and vertical, so a large supply such as a conveyor is required to transport the mixed wood from a transport vehicle to the storage silo. In addition, in order to transport the mixed material from the storage silo to the transport vehicle, it was necessary to provide a space below the storage silo through which the transport vehicle could enter and exit, or to prepare a separate transport device for the mixed material. Therefore, the storage device has become larger, and it has been difficult to install the storage device near a paving construction site in Tokyo, which is a densely populated area, for example.

<Object of the Invention> In view of such conventional problems, the present invention provides a storage device that can be installed near a paving construction site, such as a road in a densely populated residential area, and that allows easy loading and unloading of mixed materials. The purpose is to

<Structure of the Invention> For this reason, the present invention provides a heat-retaining device that has a material inlet at the top and an outlet at the bottom of the side wall and stores the material while maintaining it at a predetermined temperature, and the heat-retaining device. A support device that supports the asphalt mixture freely up and down, a lifting device that raises and lowers the heat retention device, a conveyance device that is provided at the bottom of the heat retention device and conveys the asphalt mixture from the outlet, and an asphalt mixture that is conveyed out by the conveyance device. A storage device comprising: a weighing device for measuring weight; and a weighing device for measuring weight.

<Example> The present invention will be described below based on an example shown in FIGS. 1 to 4.

In the figure, frames 1 as supporting devices are erected on the roadbed at predetermined intervals, and the frames 1 are connected to each other by reinforcing frames 2. A hopper-shaped heat insulating box 3 is installed between the frames 1 as a heat insulating device that stores the mixed material carried in and maintains a predetermined temperature (for example, 140°C to 160°C). frame 4 fixed to
The end portion of the frame 1 is loosely fitted into the groove 1a of the frame 1 so as to be able to freely slide in a substantially vertical direction.

The inside of the wall of the heat insulation box 3 is filled with a heat insulator 5 as shown in FIG. 3, and a plurality of heaters 6 are provided between the heat insulators 5. A composite material inlet 7 is formed in the upper part of the heat insulating box 3, and a composite material inlet 8 is formed projecting in the lower part of the side wall thereof. A shooter 9 that opens diagonally downward is attached to this outlet 8.

Further, a feeder 10 for carrying out the mixed material as a carrying out device is provided at the lower part of the heat insulation box 3.
0 faces the outlet 8. The feeder 10 has a heat insulating box 3 to prevent air from flowing into the heat insulating box 3 from around the feeder 10.
It is covered by a cover 11 that is fixed to the housing 1 with a heat insulating material 5 interposed therebetween. A gate 13 is inserted into a vertical groove 12a of a guide 12 fixed to the side of the cover 11, and by operating a hydraulic cylinder 14, the gate 13 is moved up and down while being guided by the vertical groove 12a to open and close the outlet 8. It is configured to do the following. Here, the gate 13 is configured to press against the peripheral wall of the outlet 8 to seal the outlet 8 when closed, thereby preventing air from flowing into the heat-insulating box 3 from the outlet 8. 15 is a driving shaft of the feeder 10 supported by a frame 16 fixed to the heat-insulating box 3, and 17 is a driven shaft.

Further, a lid 18 is attached to the entrance 7 of the thermal insulation box 3 for sealing the entrance 7 after the mixture is loaded.
The base ends of a plurality of hydraulic cylinders 19 as lifting devices are attached to the reinforcing frame 2, and the piston rods of these hydraulic cylinders 19 are connected to the heat insulation box 3.
installed on the side wall of the

Below the tip of the cylinder 9, there is provided a weighing hopper 22 which is suspended via a scale 21 on a pedestal 20 placed on the roadbed. Transport vehicle 2
A conveyor 24 is provided for conveying the material to the 3.

Next, a storage device having such a configuration will be explained with reference to FIG. 5.

The piston rod of the hydraulic cylinder 19 is moved downward by changing the flow of oil supplied under pressure from a hydraulic source (not shown) by operating a hydraulic switching valve (not shown), and the heat insulation box 3 is guided by the groove 1a of the frame 1 until it reaches the final position. Lower it to the lower position. Then, the lid 18 is removed from the carry-in port 7, the mixed material transport vehicle 25 is approached, and the mixed material is introduced from the transport vehicle 25 into the heat-insulating box 3 through the carry-in port 7.

After adding the mixture, the heat insulation box 3 is sealed with the lid 18,
The temperature of the composite material is maintained at a predetermined temperature, for example, about 140 to 160°C, by operating the heater 6 as necessary. At this time, if there is a risk that air may enter the heat insulation box 3 and oxidize the asphalt in the mixture, an inert gas injection device is provided and an injection port is formed in the top of the heat insulation box 3 or the cover 11, etc. Oxidation of the asphalt can be prevented by discharging the air inside the heat-insulating box 3 by pressurizing inert gas into the heat-insulating box 3.

In addition, when carrying out the mixed material from the insulation box 3,
The heat insulation box 3 is moved upward to a predetermined position by operating the hydraulic cylinder 19. Further, by operating the hydraulic cylinder 14, the gate 13 is moved upward to open the outlet 8, and the feeder 10 is rotationally driven by a drive device (not shown), so that the mixed material in the insulation box 3 is transferred to the outlet 8.
The data is transferred to the computer 9 via the computer. Then, the composite material is dropped from the shooter 9 into the weighing hopper 22, and the amount of the composite material to be carried out is measured by the weighing hopper 22. When the amount of mixed material carried out reaches a predetermined amount, the operation of the feeder 10 is stopped, the discharge gate 22a of the weighing hopper 22 is opened, the mixed material is dropped onto the conveyor 24, and the mixed material is transferred to the transport vehicle 23 by the conveyor 24. Load materials.

As explained above, in this embodiment, the heat insulation box 3
The material is brought in through the loading port 7 at the top by moving down, and the mixed material is transported from the loading port 8 at the side of the bottom by moving the insulation box 3 upward, so that the loading and unloading of the mixed material is made easier. It becomes easier.

In addition, since the heat insulating box 3 is moved downward to directly transport the mixed material into the heat insulating box 3, a device for supplying the mix material to the storage device is not required, and the structure of the storage device is simplified. Can be made smaller.

Therefore, since the storage device can be easily installed in a small area, it is possible to install the storage device near a paving construction site in Tokyo, for example. The composite material is then transported to a storage device and stored while being maintained at a predetermined temperature, allowing it to be supplied to a paving construction site in a short time as needed. Furthermore, since the amount of composite material to be carried out is measured by the weighing hopper 22, the required amount of composite material can be accurately taken out from the heat-insulating box 3, so that the required amount of composite material can be supplied to the site. In particular, there is a feeder 10 at the bottom of the heat insulation box 3 for carrying out the mixed material.
, the mixed material (asphalt mixture) can be carried out from the outlet 8 in a roughly uniform state, and the amount of mixed material to be carried out can be easily adjusted and the desired amount of mixed material can be carried out. can. In addition, the weight of the mixed material carried out by the feeder 10 is measured by the scale 21 and the weighing hopper 22, and then the weight is measured by the transport vehicle 2.
Since the mixed material is transported and supplied to the heat-insulating box 3, a desired amount of the mixed material can be transported out of the heat-insulating box 3.

Therefore, the required amount of composite material maintained at a required temperature can be supplied, making it easy and economical to level the composite material without disposing of the composite material.
In addition, since it can be supplied in a short time, the shipping cost is low and it is economical.

In this embodiment, the mixture is directly delivered to the heat-insulating box 3 from the mix-material transport vehicle 25. Materials may also be supplied.

Alternatively, an outlet may be provided at the lower part of the heat-insulating box 3, a carrier may be positioned directly below the outlet, and the mixed material may be directly loaded onto the carrier from this outlet. In addition, in this embodiment, a transport vehicle may be positioned below the shooter 9 to load the composite material, and at this time, if a truck scale (a scale for measuring the weight of the composite material is installed together with the transport vehicle), the composite material can be loaded. It is possible to eliminate the need for the conveyor 24 and to reduce the installation area of the storage device while accurately measuring the amount to be carried out.

Furthermore, if the operations of the feeder 10, weighing hopper 22, and conveyor 24 are automated, the work of carrying out the mixed material becomes easier.

<Effects of the Invention> As explained above, the present invention enables the loading and unloading of the composite material by raising and lowering it while supporting the heat retaining device that stores the composite material at a predetermined temperature with the support device. Loading and unloading of composite materials becomes easier. Further, since the conveying device is provided at the lower part of the heat-retaining device, a desired amount of composite material can be easily transported out of the heat-retaining device in a substantially uniform rough state. In particular, since a measuring device is provided, the necessary amount of mixed material can be reliably carried out from the heat-retaining device. Furthermore, since a particularly large-sized material supply device is not required, the storage device as a whole can be downsized, and the storage device can be easily installed, for example, near a paving construction site in a densely populated residential area. This allows the mixed material to be stored near the construction site while maintaining it at a predetermined temperature, so if necessary, the mixed material at a predetermined temperature can be supplied from the storage device to the site in a short time, resulting in lower shipping costs and more efficient use of the material. Leveling work becomes easier.

In addition, since the composite material can be supplied to the site in small quantities using a small dump truck or the like, the required amount of composite material can be supplied, which eliminates the need to dispose of the composite material and improves economy.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a storage device showing an embodiment of the present invention, FIG. 2 is a plan view of the main parts of FIG. 1, FIG. Figure 3 -
The arrow view and FIG. 5 are diagrams for explaining the functions. 1... Frame, 3... Warm box, 7... Loading port, 8... Loading port, 9... Shooter, 10... Feeder, 13... Gate, 19... Hydraulic cylinder, 22... Measuring hopper .

Claims (1)

[Claims] 1. A heat retention device which has an inlet for the asphalt mixture at the top and an outlet at the bottom of the side wall and stores the asphalt mixture while maintaining it at a predetermined temperature, a support device which supports the heat retention device so as to be able to move up and down, and the heat retention device. It is equipped with an elevating device for elevating and lowering the device, a conveying device provided at the lower part of the heat retention device for conveying the asphalt mixture from the outlet, and a weighing device for measuring the weight of the asphalt mixture conveyed by the conveying device. An asphalt mixture storage device characterized by: