Solid material comminution or disintegration – Processes – Subjecting material to impact by moving comminuting surface
Patent
1997-01-14
1998-06-16
Husar, John M.
Solid material comminution or disintegration
Processes
Subjecting material to impact by moving comminuting surface
241 29, 241 36, 24110174, B02C 2500
Patent
active
057657653
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a method of and an apparatus for driving a crushing machine, such as a self-traveling crushing machine, that can be used to crush crushable scraps at a building wrecking site.
BACKGROUND ART
As disclosed in Japanese Unexamined Utility Model Publication No. Sho 64-32744, there has been known a self-traveling crushing machine vehicle in which a crushing machine, a hopper coupled to the said crushing machine and a drive unit for driving the said crushing machine are mounted on a vehicle body that is equipped with a pair of left hand side and right hand side self-traveling bodies and in which a discharge conveyer is mounted, so as to be capable of rising up and falling down, between the left hand side and right hand side self-traveling bodies in the pair on the lower part of the said vehicle body.
Such a self-travelling type crushing machine vehicle is capable of finely crushing a mass of crushable objects which are constituted by building scraps or the like which are charged into the hopper, and then discharging the crushed pieces out of the vehicle body by means of the discharge conveyer.
The above mentioned crushing machine of the said self-traveling crushing machine vehicle is provided with a fixed edge and movable edge and has a construction in which the said movable edge is oscillatingly swung towards the said fixed edge so that a crushable object may be squeezed between the said fixed edge and the movable edge and may then be crushed. Since the said fixed edge and the said movable edge are generally oriented vertically, the entire height of the crushing machine of this type needs to be large, thus requiring the said self-traveling crushing machine vehicle to be large in its entire height. This has involved a problem in that the said crushing machine is difficult to be transported with the self-traveling vehicle.
In an attempt to resolve such a problem, the present applicant has previously proposed an improved self-traveling crushing machine vehicle in which the vehicle body has a crushing machine of a dual axis shearing type mounted thereon that is comprised of a pair of rotary shafts which are provided with a plurality of cutters within a housing and are supported sidelong so as to be rotatable.
With such a self-traveling crushing machine vehicle, its entire height can be lowered since the crushing machine may be lowered in its entire height.
It has been found, however, that when light weight crushable objects such as straw mats, vinyl made products or paper made products are attempted to be crushed, they cannot drop or be discharged from the housing in spite of the fact that they are being continuously crushed.
When the cause of this phenomenon was zealously investigated by the present inventor, it has been found that when a crushing machine of a dual axis shearing type is used in which the discharge side of a pair of rotary shafts (that constitutes a crushing means) which are provided with a plurality of cutters, has a scraper attached thereto is opposed to said rotary shafts and said cutters, a crushable object tends to be pushed into and held within a spacing between the said scraper and the said rotary shaft and a spacing between the said scraper and the said cutter (i. e. a spacing between the crushing means and the scraper) and, as a result, the crushed pieces successively deposit or are piled up at the discharge side of the crushing means so that a failure in the drop and discharge of the crushed pieces may take place.
With the above mentioned problem taken into account, it is accordingly an object of the present invention to provide a method of and apparatus for driving a crushing machine whereby a situation in which crushed pieces deposit or are piled up at the discharge side of a crushing means so that they are unable to drop or be discharged is avoided, and whereby a crushing operation can be carried out with an enhanced efficiency.
SUMMARY OF THE INVENTION
In order to achieve the object mentioned above, there is provided in accordance
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Ikegami Katsuhiro
Kitani Toshio
Koyanagi Satoru
Nakayama Toru
Ozawa Yuji
Husar John M.
Komatsu Ltd.
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