JP2945352B2 - Two-shaft shear 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 two-shaft shearing crusher for crushing waste such as felled trees, building waste, and bulky waste.

[0002]

2. Description of the Related Art Conventionally, as a twin-screw type crusher of this type, there is known an apparatus for crushing an object described in Japanese Patent Publication No. 5-505558. This device has a rectangular box-shaped casing in which a number of slits covering almost the entire width in the width direction are provided at the bottom in parallel with each other appropriately separated in the depth direction, and a slit is formed on the bottom of the casing at right angles to the slit and parallel to each other. And two semi-circles having a plurality of U-shaped edges opened in the direction of rotation of the two shafts, which are rotated forward and backward in different directions. Attached to the rotating blade, the periphery of which is spaced between both shafts, and can be inserted into each slit, and attached to one side of each slit at the bottom positioned between both shafts, A fixed blade is provided for sliding contact with one side surface. The apparatus having the above-described configuration transfers waste such as felled trees, building waste, and oversized trash supplied from above to the casing between the two shafts by rotating blades that rotate with the forward rotation of both shafts. Bend and tear in conjunction with
In cooperation with the fixed blade, it is crushed by shearing and dropped as a crushed product from the slit at the bottom.

[0003]

However, in the conventional two-shaft shearing crusher, the waste transferred by the forward rotation of the rotary blade directly contacts the upper surface of the bottom of the casing, especially the upper surface of the bottom between the two shafts. In this case, there is a problem that the portion is worn and deformed, and the repair is troublesome. Further, since the fixed blade is attached to one side surface of the slit, there is a disadvantage that the crushing efficiency is low. Therefore, an object of the present invention is to provide a two-shaft shearing crusher capable of preventing abrasion and deformation of a bottom portion of a casing and greatly improving crushing efficiency.

[0004]

In order to solve the above-mentioned problems, a two-shaft shearing crusher according to the present invention comprises a box-shaped casing having a plurality of slits provided in parallel at the bottom, and a slit at the bottom of the casing. Are arranged parallel to each other at right angles,
Two shafts that are rotated in different directions from each other and a semicircular shape having a plurality of U-shaped edges opened in the rotation direction of the shafts are attached to both shafts, and the periphery is spaced between the two shafts. And a rotary blade that can be inserted into each slit,
A fixed blade mounted between the two shafts and mounted on the bottom and cooperating with each rotating blade to cooperate with the rotating blade to shear the waste. And has an inverted U-shape straddling the rotary blade, and both side surfaces are in sliding contact with the side surface of the adjacent rotary blade.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1, 2 and 3 are plan views showing an embodiment of a twin-screw crusher according to the present invention, an enlarged sectional view taken along the line II-II in FIG. 1, and an enlarged sectional view taken along the line III-III in FIG. FIG. In the figure, reference numeral 1 denotes a rectangular box in which a number of slits 2 covering substantially the entire width in the width direction (the left-right direction in FIG. 2) are provided at the bottom 1a in parallel with being appropriately separated in the depth direction (the left-right direction in FIG. 1). The casing 1 is mounted on a gantry 3 having a conveyor (not shown) for carrying crushed products. On the bottom 1 a of the casing 1, two shafts 4 are arranged at right angles to the slit 2 via a plurality of bearing brackets 5 in parallel with each other, and one end (the right end in FIG. 1). The drive unit is provided so as to be able to rotate forward (in the direction of arrow A in FIG. 2) and reverse in different directions by a driving device such as a gear box (not shown) and a hydraulic motor 6 connected to the motor. Each of the two shafts 4 has a semicircular rotary blade 7 having a plurality of U-shaped edges 7 a, 7 b, 7 c (two normal rotation directions and one reverse rotation direction) opened in the rotation direction of the shaft 4. The flanges 8 are attached to the two shafts 4 so as to correspond to the slits 2 and are attached out of phase with each other, and the peripheral edges of the two shafts 4 are spaced apart from each other by a small distance and can be inserted into each slit 2. Further, both side surfaces are in sliding contact with the side surface of the scraper 9 attached to the inner side surface of the casing 1.
On the other hand, between the two shafts 4 at the bottom 1 a of the casing 1, an inverted U-shaped fixed blade 10 straddling the bottom 1 a between the adjacent slits 2, and has both outer surfaces on the side of the adjacent rotary blade 7. The fixed blades 1 are mounted so as to be in sliding contact with each other.
The outer surface of 0 is inclined so as to move away from the side surface of the rotary blade 7 as it goes downward.

In the two-shaft shearing crusher having the above structure, waste such as felled trees, building waste, and oversized refuse supplied from above the casing 1 is rotated by the rotary blades 7 that rotate with the forward rotation of the two shafts 4. Is transported between the two shafts 4 while being bent and torn together with the upper surface of the fixed blade 10,
In addition, both sides of the fixed blade 7 and the side surface of the adjacent fixed blade 10 cooperate to be sheared and crushed at two places, fall as a crushed product from the slit 2 of the bottom 1a, and go out of the machine by the conveyor of the gantry 3. It is to be carried out. At the time of the above-mentioned waste crushing treatment, the attached matter attached to the rotary blade 7 is wiped off by a scraper 9 which is in sliding contact with both side surfaces thereof,
When the rotary blade 7 is overloaded, the waste is moved to the inner side of the casing 1 by the reverse rotation of the shaft 4.

[0007]

As described above, according to the twin-shaft shearing crusher of the present invention, the fixed blade functions as a protector for covering the upper surface of the bottom between the two shafts. Can be prevented. Further, since the waste is sheared at two places, that is, the both sides of the rotary blade and the adjacent fixed blade, the crushing efficiency can be remarkably improved as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of an embodiment of a two-shaft shearing crusher according to the present invention.

FIG. 2 is an enlarged sectional view taken along line II-II in FIG.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 1a Bottom part 4 Axis 7 Rotary blade 7a Edge 7b Edge 7c Edge 10 Fixed blade

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuyuki Katagiri 1780 Kamikono, Yachiyo-shi, Chiba Kawasaki Heavy Industries, Ltd. Inside the Yachiyo Plant Yachiyo Plant (72) Inventor Hironobu Sueda 1780 Kamikono, Yachiyo City, Chiba Prefecture Kawasaki Heavy Industries, Ltd.Yachiyo Plant (58) Fields investigated (Int.Cl. ⁶ , DB name) B02C 18/00-18 / 44

Claims (1)

(57) [Claims] 1. A box-shaped casing having a plurality of slits provided in parallel at a bottom portion thereof, and two shafts arranged on the bottom portion of the casing at right angles to the slits and rotated in mutually different directions. And a semicircular shape having a plurality of U-shaped edges opened in the rotation direction of the shaft, and attached to both shafts, the periphery of which is spaced between both shafts, and can be inserted into each slit. In a two-shaft shearing crusher having a rotating blade and a fixed blade positioned between both shafts and attached to the bottom and cooperating with each rotating blade to shear the waste, the fixed blade is disposed adjacent to the rotating blade. A two-shaft shearing crusher characterized by having an inverted U-shape straddling the bottom between matching slits, and having both side surfaces in sliding contact with the side surface of an adjacent rotary blade.