JP3316185B2 - Screen crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher for crushing civil engineering construction waste such as concrete waste and asphalt waste to obtain a crushed material of a predetermined size.
More specifically, the present invention relates to a screen crusher in which a processing amount is increased by using a screen.

[0002]

2. Description of the Related Art In recent years, a large amount of civil engineering and construction waste such as concrete waste and asphalt waste has been discarded, resulting in a pollution problem caused by waste disposal. For this reason, the reuse of civil engineering construction waste is being seriously studied. Such reuse of civil engineering and construction waste materials contributes to effective use of resources while preventing pollution due to dumping, and is an important matter as a global environmental problem.

There are various types of conventionally known concrete waste material crushers. A waste material is put between two crushing plates erected in the crusher, and the waste material is sandwiched between the crushing plates to crush the material. There is something. In this known crusher, a flywheel is rotated by a motor as a power source, and the rotation of the flywheel is transmitted to a cam to operate a crush plate. The crusher of the type using the motor, flywheel and cam generates vibration and noise, and thus causes a problem of noise pollution when used near an urban area or a residential area.

[0004] Therefore, a crusher has been proposed in which vibration and noise are reduced by using hydraulic pressure. As an example of a known hydraulic crusher, a crusher as shown in FIGS. 5 and 6 is known. Waste material 2 in hopper 1
And the waste material 2 is supplied from the hopper 1 to the fixed amount supply device 3. The fixed-quantity supply device 3 is provided with a box 3A for storing a fixed amount of the waste material 2, and the waste material 2 stored in the box 3A is put between the two crushing plates 4A and 4B of the crusher C. . One crushing plate 4A is moved by the hydraulic cylinder 5 toward the other crushing plate 4B,
The waste material 2 sandwiched between A and 4B is crushed. The crushed waste material 2 is dropped onto a belt conveyor 6 and transported to a predetermined place by the belt conveyor 6.

[0005]

However, in the above-mentioned known hydraulically driven crusher, the crushing plates 4A and 4B have a structure in which crushing teeth 7 are provided on flat plates. For this reason,
Since the crushed waste material 2A falls only downward and is collected on the conveyor 6 from between the two crushing plates 4A and 4B,
It is difficult to increase the processing amount of the waste material 2. In order to increase the processing amount, it is necessary to provide an interval adjusting mechanism 8 for adjusting the interval below the crushing plates 4A, 4B, which increases the cost. Further, since the crushing teeth 7 are provided as uneven ridges extending in the vertical direction, the waste material 2 does not get caught when the waste material 2 is charged, and for example, the elongated rod-shaped waste material 2 is kept on the conveyor 6 as it is. There was a risk of falling on the.

The present invention has been made in order to solve the problems of the conventional hydraulic crusher. Accordingly, an object of the present invention is to provide a screen crusher that uses a screen to increase the area of a discharge port for crushed waste material, thereby increasing the amount of crushed waste material. Another object of the present invention is to provide a screen crusher in which the thrown waste material is caught on a crushing plate, so that the elongated waste material is prevented from dropping as it is.

[0007]

In order to achieve this object, according to the present invention, the crushing plate of the crusher 17 is constituted by screen crushing plates 21A and 21B constituted by screens, and crushing teeth provided on the screen crushing plates 21A and 21B. While the crushed waste material is dropped on the one hand, the crushed waste material is dropped from the space below both screen crush plates 21A and 21B, and the crushed waste material is dropped on the screen crush plate 2 on the other hand.
It is configured to pass through the mesh openings 31 of 1A and 21B and to fall and discharge to the outside. Another feature of the present invention is that the crushing teeth are formed by steel rods 34 extending in the lateral direction.

According to the present invention, the crushed waste material charged into the screen crusher 17 is not only dropped from the space below the two screen crush plates 21A and 21B but also discharged through the mesh opening 31. Therefore, the amount of waste material to be treated increases. Also, since crushing teeth made of a steel rod 34 extending in the lateral direction are provided,
Even if the input waste material has an elongated shape, it is possible to reduce the possibility that the waste material is caught by the crushing teeth and directly falls downward.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic installation diagram of a screen crusher according to the present invention, wherein a slope 1 is shown.
A horizontal surface 12 is formed on an upper part of the shovel 1, and waste materials 15 are put into a hopper 16 from a shovel 14 of a shovel car 13. The waste material 15 is fed into the screen crusher 17 of the present invention from the outlet of the hopper 16. The crushed waste material 15A crushed by the screen crusher 17 is dropped on the belt of the belt conveyor 18 and transported to a predetermined position.

The structure of the screen crusher 17 is as shown in FIGS. The two screen crushing plates 21A and 21B are erected so as to open upward. One screen crush plate 21A of the two screen crush plates 21A and 21B is rotatably supported about a shaft 22 below, and the other screen crush plate 2A.
1B is fixed. A push plate 23 is connected to the screen crushing plate 21A via a pin 24, and the other end of the push plate 23 is connected to a support block 26 via a pin 25.
It is connected to. The support block 26 is fixed to a tip of a piston rod 28 of a hydraulic cylinder 27. The hydraulic cylinder 27 is connected to the frame 30 of the screen crusher 17 via a pin 29.

The pressing plate 23 has a triangular shape so as to be joined over the entire width of the screen crushing plate 21A, and the entire width of the screen crushing plate 21A can be pressed by the hydraulic cylinder 27. The screen crush plates 21A and 21B have a screen shape having a large number of mesh openings 31, as shown in detail in FIG. That is, the screen structure is obtained by assembling the vertical plate 32 and the horizontal plate 33 in a grid pattern. Therefore, the crushed waste material is discharged through the mesh openings 31 forming the screen. In the present invention, a steel rod 34 made of hardened steel is provided laterally as a crushing tooth. Steel rod 3
4 is fixed to the horizontal plate 33. Although the steel bar 34 is provided as a round bar in this embodiment, the present invention is not limited to the structure of this embodiment, and may be, for example, a semicircular steel bar.

According to the present invention configured as described above,
The crushed waste material that has been thrown into the screen crusher 17 and crushed not only falls from the space below the two screen crush plates 21A and 21B, but also drops into the mesh opening 31.
, The amount of waste material to be treated increases.

Further, since the crushing teeth formed of the steel rods 34 extending in the lateral direction are provided, even if the waste material to be charged has an elongated shape, it is less likely to be caught by the crushing teeth and fall directly down. It will be.

The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the above-described embodiment, the crushing teeth are formed of round bars made of steel, but may be semicircular steel bars. Further, the plate extending in the lateral direction is not always necessary, and can be omitted. Further, in the above embodiment, only one of the screen crushing plates is moved. However, the present invention is not limited to the embodiment, and there is a case where both crushing plates operate as a sandwiching castle. Including.

[0015]

According to the present invention described above, the following effects can be obtained. Since the crushed waste material is discharged through the mesh opening, the amount of waste material to be treated is increased, and the processing performance is improved. In addition, since there is no need to provide an interval adjusting mechanism for adjusting the interval below the crushing plate as in the related art,
The cost is reduced accordingly. Also, since the crushing teeth extend in the lateral direction, when the waste material is thrown, the waste material is caught on the crushing teeth,
It is less likely that the elongated rod-shaped waste material is dropped as it is.

[Brief description of the drawings]

FIG. 1 is a view schematically showing a screen crusher of the present invention.

FIG. 2 is a front view of the screen crusher of FIG.

FIG. 3 is a partial plan view of the screen crusher of FIG. 1;

FIG. 4 is a front view of a screen crush plate.

FIG. 5 is a schematic front view of a known hydraulic crusher.

FIG. 6 is a perspective view showing a crushing tooth of the crusher of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Slope 12 Horizontal plane 13 Shovel car 14 Shovel 15 Waste material 15A Crushed waste material 16 Hopper 17 Screen crusher 18 Belt conveyor 21A, 21B Screen crush plate 22 Shaft 23 Push plate 24 Pin 25 Pin 26 Support block 27 Hydraulic cylinder 28 Piston rod 29 Pin 30 Frame Body 31 Mesh opening 32 Vertical plate 33 Horizontal plate 34 Steel rod

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B02C 1/02-1/10

Claims (3)

(57) [Claims] 1. A screen crushing plate fixed to a screen crushing plate which rotates about a rotation axis and moves toward the fixed screen crushing plate, the two diametrically opposed standing crushing plates. A screen crushing plate, crushing teeth provided on both screen crushing plates, and a hydraulic mechanism for moving the screen crushing plate, and a waste material is put between the two screen crushing plates, and the hydraulic mechanism is operated. In a crusher in which a screen crushing plate is rotated to crush the waste material and drop the waste material downward, the two screen crushing plates are formed by a vertical plate and a horizontal plate. The screen structure is formed by assembling in the form of a box, and the screen structure is a box-shaped mesh opening with open front and rear surfaces surrounding both sides with a vertical plate body and upper and lower surfaces with a horizontal plate body. A plurality of crushing teeth are fixed in front of the plate in the lateral direction, and the crushing teeth are extended in the lateral direction, and the rear part between the crushing teeth is continuous with the opening of the mesh opening. A screen crusher characterized by being configured as a void portion through which waste material passes. 2. The screen crusher according to claim 1, wherein the crushing teeth are steel rods. 3. A moving plate crush plate is connected to a push plate via a pin, and the other end of the push plate is connected to a support block via a pin, and the support block is connected to a piston rod of a hydraulic cylinder. The screen crusher according to claim 1 or 2, wherein the pressing plate is fixed to a tip of the screen crusher, and the pressing plate is formed in a triangular shape so as to be joined over the entire width of the screen crushing plate.