Solid material comminution or disintegration – Apparatus – With automatic control
Patent
1996-12-31
1998-09-08
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
With automatic control
24110174, B02C 2500
Patent
active
058033769
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a crushing machine control system for a self-traveling crushing machine vehicle that is designed for crushing building scraps at a building destruction 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 being driven by itself. In addition, it 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.
A crushing machine that is mounted on such a self-travelling crushing machine vehicle has a drive source which is constituted by a hydraulic motor that is rotated with a pressurized discharge fluid from a hydraulic pump. The said hydraulic motor has the rate of rotation that is determined by the rate of flow of the pressurized supply fluid and an output torque thereof is determined by the pressure of the said pressurized supply fluid. Accordingly, the rate of rotation of the crushing machine and the crushing force thereof are determined by the rate of flow and the pressure of the said pressurized supply fluid. And, since the output of the drive source of the hydraulic pump is normally set to be constant, there are mutually contradictory relationships between the rate of flow and the pressure of the hydraulic pump.
More specifically, when the rate of flow of the supply fluid from the hydraulic pump is greater, the pressure of the supply fluid will be reduced whereas when the rate of flow of the supply fluid from the hydraulic pump is smaller, the pressure of the supply fluid will be increased. Hence, when the rate of rotation of the crushing machine is a higher speed, the crushing force will be reduced and when the crushing force of the crushing machine is greater, the rate of rotation thereof will be a lower speed.
For this reason, a problem arises with a crushing machine in the prior art in that when the crushing force thereof is made greater in order to render the crushing machine applicable to a crushable object that is hard to be crushed such as a tire, the rate of rotation thereof will be made so slow that there may be a lowering of performance in crushing a crushable object that is easy to be crushed such as a wood piece, and when on the contrary the rate of rotation thereof is increased to crush with an increased performance a crushable object that is easy to be crushed such as a wood piece, the crushing force thereof will be so reduced that the crushing machine may be incapable of crushing a crushable object that is hard to be crushed such as a tire.
Accordingly, it is an object of the present invention to provide a crushing machine control system for a self-traveling crushing machine vehicle having a crushing machine which can be driven so as to provide an increased crushing force when a load relative to the crushing machine is greater and which can be driven at an increased speed when the said load is smaller, and hence is rendered to appropriately meet with either of the cases.
SUMMARY OF THE INVENTION
In order to achieve the object mentioned above, there is provided in accordance with the present invention, in one aspect thereof, a crushing machine control system for a self-traveling crushing machine vehicle in which a vehicle body that is equipped with a self-traveling mechanism has mounted thereon a crushing machine whi
REFERENCES:
patent: 5052630 (1991-10-01), Hinsey et al.
patent: 5248100 (1993-09-01), Arakawa
patent: 5285973 (1994-02-01), Goforth et al.
patent: 5580004 (1996-12-01), Tamura et al.
Ikegami Katsuhiro
Koyanagi Satoru
Nakayama Toru
Ozawa Yuji
Tamura Yukio
Komatsu Ltd.
Rosenbaum Mark
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