JP2632257B2 - Method and apparatus for storing asphalt pavement waste - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for storing waste asphalt pavement that has been excavated by road construction or the like and carried into an asphalt mixture production plant.

[0002]

2. Description of the Related Art When the ground is dug by road construction or the like, a large amount of asphalt pavement waste material (hereinafter referred to as "waste material") is generated. For this reason, recently, asphalt pavement waste material is often mixed with a new asphalt mixture in an appropriate amount and recycled. Waste materials transported from the construction site to the asphalt mixture production plant are placed in large piles on the plant site in a piled state. If necessary, a predetermined amount is taken out by a shovel loader, transported to a crushing device, crushed by the crushing device, temporarily stored in a waste material hopper, and used.

[0003]

However, stacking waste materials on the factory premises occupies a large area, and there is no space for stacking them, especially in urban areas, and it is not aesthetically pleasing.

Furthermore, in order to take out the waste materials piled up in a pile, a shovel loader is often used, and if the shovel loader is operated continuously in parallel with the operation of the waste material regeneration plant, noise and personnel are not secured. In addition to having a problem, it is an adverse effect of automation of storage and supply of waste materials.

[0005] In view of the above, the present invention saves space.
Further, it is an object of the present invention to provide a method and an apparatus for storing asphalt pavement waste material in which a series of steps from storage of the waste material to use thereof are easily automated while taking aesthetics into consideration.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention crushes a lump of waste material to an appropriate size that can be conveyed by a primary crusher, and digs the crushed waste material into the ground. It is carried into a water tank of an appropriate size formed as described above, and the waste material is temporarily stored in the water tank in a state of being immersed in water.

[0007]

According to the present invention, a lump of waste material carried from a construction site to a factory by a dump truck or the like is first put into a primary crusher and transported to an appropriate size, for example, 150 to 2 pieces.
Roughly crushed to about 00 mm, and the crushed waste material is stored in a water tank storing water. The buoyancy of the water reduces the consolidation of the waste material due to its own weight, and the presence of water weakens the adhesiveness of the asphalt to reduce the sticking of the waste material, so that the waste material can be stored in a crushed particle size.

[0008]

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

Reference numeral 1 denotes a primary crusher for roughly crushing asphalt pavement waste generated during road construction and the like, and has a suitable size capable of transporting waste carried by the dump truck 2, for example, a size of about 150 mm to 200 mm. Is to be crushed. The waste material roughly crushed by the primary crusher 1 is fed into the entire area of the water tank 4 by a suitable conveying means, for example, a telescopic conveyor 3. The water tank 4 is dug into the ground to an appropriate depth to form a space of an appropriate size, and waterproof and concrete is poured into the bottom and the periphery. The water tank 4 is provided with a water supply pipe 5 for supplying water, and has a structure in which an upper portion is opened so that waste materials can be freely introduced and removed.

Reference numeral 6 denotes a traveling crane as a waste material removing device, and a hoist 8 is movably mounted on a traveling rail 7 provided above the water tank 4. At the end of the wire 9 wound around the hoist 8, a grab bucket 10 for grasping waste material is attached, and the grab bucket 10 is provided with an appropriate gap so that draining can be performed when the waste material is grasped from the water. . And one end of the running rail 7 is extended so as to reach the receiving material hopper 11,
The grab bucket 10 that has picked up the waste material is transferred onto the receiving material hopper 11 by the hoisting machine 8.

Below the receiving hopper 11, the conveyor 1 is provided.
2, and a secondary crushing device 13 is provided downstream of the conveyor 12 on the material discharge side. The secondary crushing device 13 crushes the waste material crushed by the primary crushing device 1 more finely, and crushes the waste material of about 150 mm taken out by the grab bucket 10 to approximately 20 mm or less.

The crushed waste material is supplied to a sieving device 15 via a conveyor 14 and has a particle size of 20 mm or more,
It is sieved into 20 mm, 5 to 13 mm and 5 mm or less. Waste materials having a particle size of 20 mm or more are conveyed on conveyor 1.
The waste material returned to the secondary crushing device 13 via the crushers 6 and 17 is crushed again.
At 8, 19 and 20, the waste material is sent to a predetermined waste material storage hopper, stored for each particle size, and used out of a desired waste material hopper as needed.

FIG. 2 shows an example in which an inclined conveyor 21 is employed in place of the traveling crane 6 of the waste material take-out device, which is provided with scraping blades 22 having holes for draining water.
The waste material is scraped up while being drained by the scraping blades, and transferred to the receiving material hopper 12.

When storing waste materials, water is first supplied from the water injection pipe 5 of the water tank 4 to keep the water level at an appropriate level. Then, the waste material carried by the dump truck 2 from the construction site is put into the primary crusher 1 and the primary crusher 1
In this method, waste materials of about 1000 mm are crushed to a size of about 150 to 200 mm. The primary crushed waste material is put into the water tank 4 by the transport conveyor 3, and the waste material is submerged in the water stored in the water tank 4 and stored. When waste materials are stored in water in this way, the buoyancy of the water can reduce the consolidation due to the weight of the waste materials, and the presence of water can reduce the asphalt adhesiveness and reduce the sticking of the waste material particles. Also, waste materials containing asphalt having tackiness can be stored well.

In response to a request for the production of the asphalt mixture, the waste material is picked up from the water tank 4 by the grab bucket 10 and taken out to the receiving material hopper 11 while draining. The waste material primarily stored in the receiving material hopper 11 is cut out by an appropriate amount by the waste material transfer conveyor 12 and sent to the secondary crushing device 13. At this time, a certain amount of water adheres to the waste material. However, since the secondary crusher 13 crushes the material having a particle size of about 150 mm to about 20 mm or less, its surface area increases and adheres to each particle. The generated water is practically no problem. The waste material crushed by the secondary crusher 13 is stored for each particle size and is regenerated as asphalt mixture.

In the embodiment, an example is shown in which one water tank 4 is arranged. However, a plurality of water tanks may be arranged, or the inside of the water tank 4 may be partitioned to store waste materials by type.

[0017]

As described above, according to the present invention, a large lump of waste material carried from a construction site is roughly crushed to an appropriate size that can be transported by the primary crusher 1, and the crushed waste material is removed. It is stored in the water tank 4 in a state of being immersed in water. The buoyancy of the water reduces the consolidation of the waste material due to its own weight, and the presence of water weakens the adhesiveness of the asphalt to reduce the sticking of the waste material particles. Therefore, even if the waste materials are stacked and stored in the water tank 4, the waste materials can be well stored with the crushed particle size without sticking to each other so much that the space can be saved and the aesthetic appearance is preferable. Become. Further, since a lump of waste material can be roughly crushed and stored in a size that can be transported, automation of a post-process such as removal of waste material can be easily performed.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an overall configuration of a storage device according to an embodiment of the present invention.

FIG. 2 is a view showing another embodiment of the waste material extracting device for the water tank according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Primary crusher 4 ... Water tank 6 ... Traveling crane 10 ... Grab bucket (waste material removal device) 13 ... Secondary crusher 15 ... Sieving device

Claims (2)

(57) [Claims] A crushed waste material is crushed to a particle size of an appropriate size that can be transported by a primary crushing device, and the crushed waste material is carried into a water tank of an appropriate size formed by digging down the ground. A method for storing asphalt pavement waste material, comprising temporarily storing waste material in a state of being immersed in water. 2. A primary crusher for crushing a lump of asphalt pavement waste material to a particle size of an appropriate size capable of being transported, a transport device for transporting the crushed waste material, and a digging of the ground to be carried in by the transport device. An asphalt pavement waste material storage device, comprising: a water tank of an appropriate size for temporarily storing the waste material in a state of being immersed in water; and a waste material removing device having a drainer for removing the waste material stored in the water tank.