Comminuting machine with comminution grates

#This application is related to my copending U.S. patent applications Ser. No. 08/215,326, filed Mar. 21, 1994, and entitled "Mobile Material Processing Machine With Tandem Axle", Ser. No. 08/215,523, filed Mar. 22, 1994, entitled "Arcuate Impact Plate and Comminuting Machine With Arcuate Impact Plate", Ser. No. 08/217,388, filed Mar. 24, 1994, entitled "Comminuting Machine With Comminution Cover Plate", and Ser. No. 08/217,377, filed Mar. 24, 1994, entitled "Comminuting machine With Comb-like Further Comminuting Structure", and Ser. No. 08/217,372, filed Mar. 24, 1994, and entitled "Infeed Construction for Comminuting Machine".

#The present invention relates to a new and improved construction of a comminuting machine.

#In its more particular aspects, the present invention specifically relates to a new and improved construction of a comminuting machine for comminuting waste and, more particularly, waste wood material intended to be composted. Generally, such machines are mounted at a mobile support frame and comprise a housing in the form of a container for receiving the material to be comminuted. A conveyor is disposed in the housing or container for conveying the infed material to a rotary impact mechanism. The rotary impact mechanism cooperates with an impact plate in a comminuting section which precedes a discharge opening of the housing or container for discharging the comminuted material under the action of the rotary impact mechanism. The impact plate may be followed by further comminuting means through which the comminuted material is discharged with further comminution. The comminuted material may be deposited in stacks or pits for composting.

#The invention will be better understood and objects other than those set forth above, will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein the same or analogous components are designated by the same reference characters and wherein:

#FIG. 1 is a schematic, partially sectional side view of an exemplary embodiment of the inventive comminuting machine;

#FIG. 2 is a perspective, partially sectional view of the comminuting machine as shown in FIG. 1;

#Describing now the drawings, it is to be understood that only enough of the construction of the comminuting machine has been shown as needed for those skilled in the art to readily understand the underlying principles and concepts of the present development, while simplifying the showing of the drawing. Generally, the inventive comminuting machine includes a stationary or mobile housing which houses a rotary impact mechanism and receives the material to be comminuted. The drawings specifically show examples of a waste wood comminuting machine for comminuting waste wood of the type as occurring in forestry, municipality and building or constructing operations. While the illustrated exemplary embodiments are concerned with a mobile machine of this type which is supported at a wheel-supported support frame which also carries the drive means for operating the machine, it will be understood that the inventive construction can also be realized in connection with a truck supported mobile comminuting machine. Also, the illustrated exemplary embodiments may be provided with independent drive means as disclosed in the initially cross-referenced, copending U.S. patent application. Naturally, the inventive construction is not limited to the illustrated examples of waste wood comminuting machines but can also be realized in connection with comminuting machines for processing other kinds of material and based on the same basic constructional principles.

#Turning attention now to FIG. 1 of the drawings, there has been shown in a schematic, partially sectional side view a comminuting machine 1 and a housing 2 thereof. This housing 2 may constitute, for example, the rear part of a trough-shaped container having a not particularly illustrated central portion which receives the material to be comminuted. Conveying means such as a scraper conveyor and an intake roll convey the infed material to this rear portion which houses the actual comminuting mechanism to be described hereinbelow. In a front portion (not shown) of the comminuting machine, there may be located drive means for operating the comminuting machine. Such drive means may comprise, for example, a diesel engine representing the prime mover and a hydraulic drive system including an axial piston pump which is in driving connection with the prime mover and which supplies hydraulic oil to various hydraulically operated components of the comminuting machine.

#The actual comminuting mechanism is accommodated by the housing or rear part 2 of the container. This mechanism is constituted by a rotary impact mechanism 3 which is, in the illustrated embodiment, of known construction containing a drum 4 equipped with flails 5 each of which is pivotably supported about a pivot axis 6. During revolution of the drum 4 in the rotational direction as indicated by the arrow 7, the flails 5 are subject to a centrifugal force and pivot outwardly in known manner. As a result, cutting members 8 of the flails 5 define a cylindrical area 9 of action. The material to be comminuted is infed into the area 9 of action of the rotary impact mechanism 3 by means of, for example, a conveying device like the initially mentioned scraper conveyor.