CRUSHER OF CONCRETE OR THE LIKE

Japanese Patent JP3194516

B2

PROBLEM TO BE SOLVED: To improve crushing speed of a concrete lump by forming a crushing surface of the fixed lower jaw in a cross-sectional almost V shape, and providing a main crushing blade coincident with the deepest part of a fixed side crushing surface and an auxiliary crushing blade lower in a blade height on a crushing surface of the movable upper jaw.
SOLUTION: In the movable upper jaw 2, a plate-like main crushing blade 5 is installed in the longitudinal direction in a part opposed to the deepest part of a cross- sectional almost V-shaped fixed side crushing surface 1a, and an auxiliary crushing blade 6 lower in a blade height is installed on its periphery by crossing at a right angle to the main crushing blade 5. A concrete lump scooped by the fixed lower jaw 1 gathers to the deepest part of a crushing surface 1a, and when the movable upper jaw 2 is closed, first of all, the main crushing blade 5 crushes the concrete lump so as to be divided into two parts, and discharges a fine piece outside from a discharge hole 3. The auxiliary crushing blade 6 reaching a crushing position later than the main crushing blade 5, also crushes the small divided concrete lump more finely. Since the concrete lump naturally gathers to a central part of the fixed crushing surface 1a, postural correction is obviated, and since crushing force is concentrated on the main crushing blade 5 at initial crushing time requiring the largest force, it can be smoothly crushed with little motive power.

Yasuo Morikawa
Toshiji Ohga
Zakoji Nobuyuki

JP29527596A

July 30, 2001

November 07, 1996

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Oyodo Komatsu Co., Ltd.

B02C1/02; B02C1/10; E02F3/96; E04G23/08; (IPC1-7): E04G23/08; B02C1/02

JP5133112A
JP8187440A

Shogo Ebara (3 outside)

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