WO2012089291A2

WO2012089291A2 - Comminution machine

Info

Publication number: WO2012089291A2
Application number: PCT/EP2011/005496
Authority: WO
Inventors: Martin Fritz
Original assignee: Weima Maschinenbau Gmbh
Priority date: 2010-10-31
Filing date: 2011-10-31
Publication date: 2012-07-05
Also published as: DE202010014764U1; WO2012089291A3

Abstract

A comminution machine for wood, plastics material and other material to be comminuted comprises a standard comminution unit (10) and different feeder units (12). The standard comminution unit (10) and the different feeder units (12) have end faces of the same contour in an area where they abut so that the corresponding housing parts blend with each other on their interior and their exterior forming a flush transition.

Description

crusher

The invention relates to a crushing machine with a cutting unit and a feed unit for moving comminuted material to the cutting unit. Such shredders are used in various forms to shred wood, waste wood, plastics, metal chips and many other materials. Such comminution is advantageous in terms of space-saving storage, automatic sorting, and machine further handling of the comminuted material.

The present invention is intended to improve a shredding machine.

Advantageous developments of the invention are in

Subclaims specified. According to claim 2 is a crushing machine

advantageously decomposed into two subunits, which can be combined via a standard mechanical interface gt. This makes it possible, with a standard crushing beauty optional

to use different types of delivery units. In this way, the production of different crushing machines can be realized starting from a common shredding unit. This means that for the shredding unit, which as a rule is the more expensive and expensive part of the shredding

CONFIRMATION COPY generating higher volumes, which results in cost advantages, and enables faster fulfillment of special customer requirements. With the development of the invention according to claim 3 it is achieved that comminution unit and feed unit are connected tightly and in a predetermined manner aligned with each other. In a crushing machine according to claim 4, the shredding unit is a subunit that can be stably placed on a Aufsteilfläche. On the one hand, this facilitates the assembly of the delivery unit itself, but on the other hand it also makes it easier to assemble or assemble with a delivery unit.

In this case, one obtains with the development of the invention according to claim 5 a large Aufstellbasis and thus a particularly tilt-proof standing of the crushing unit on a Aufsteilfläche.

In a crushing machine according to claim 6 adjacent the abutting surface between crushing unit and Zustellinheit adjacent feet can absorb very high load, as by the heavy drive motor and a rotor, a counter blade assembly and a

Sieve of the crushing unit are formed. By using twin feet, the main load-bearing feet are visually lightweight and appealing.

A crushing unit according to claim 7 has a particularly large stand base.

With the development of the invention according to claim 8, feet are obtained which are relatively small. combine weight with high mechanical strength.

In a crushing machine according to claim 9, a part of the storage container is a common component of a different type of machine. Here, too, one thus obtains the advantage of low production costs due to high quantities.

The development of the invention according to claim 10 is in view of smooth outer boundary surfaces of the crushing machine advantage.

The measure of claim 11 aims in the same direction.

With the further development of the invention according to claim 12, particularly compact external dimensions of the comminution machine are obtained, since at least part of the drive motor is received below a lower boundary surface of the actual comminution unit.

The same advantage is obtained with regard to a hydraulic unit belonging to the infeed unit in the case of a comminution machine according to claim 13.

In a crushing machine according to claim 14, the delivery of comminution material against the comminution unit takes place in the horizontal direction and thus largely independent of gravity.

In a crushing machine according to claim 15, the delivery of the comminuted material against the comminution unit takes place under the action of gravity. Also, at the same stroke of the delivery slide crushed the dimensions of the crusher in the horizontal direction.

A crushing machine according to claim 16 does not require any extended guides for the feed slide. Also can be so compact dimensions

realizing having delivery units.

A crushing machine according to claim 17 ensures in a very simple and reliable manner that the very large reaction torques which must be provided by a drive component operating on a shaft of the comminution unit are safely and directly discharged. In this case, one can mitigate torque peaks by additionally providing an elastic bearing element.

The development of the invention according to claim 18 is in view of the simple and rapid creation of an access to the crushing tools bearing

Rotor and the counter blade arrangement advantageous.

The same advantage is obtained with respect to a

Rotor of the shredding unit surrounding sighting arrangement with the measure according to claim 19.

It is then ensured according to claim 20,

that only one drive is needed to move the screen assembly and the counter blade assembly between working position and maintenance position, which may possibly consist of several synchronously activated individual drives.

The development of the invention according to claim 21

is again with regard to smooth-surfaced outer ßere limitations of the crusher and compact design of advantage.

The development of the invention according to claim 22 is advantageous in terms of easy maintenance and replacement of parts of the screen assembly.

The same advantage is obtained according to claim 23 also with respect to the counter blade of the crushing unit.

In a crusher according to claim 24, a feed slide, which presses crushed material into the shredding unit, against the force of the bearing springs of slide rollers downwardly movable, whereby the top of the Zustellschiebers of wear rails or wear plates is released, which are arranged above the plane of movement of the top of the Zustellschiebers ,

In this case, the development of the invention according to claim 25 makes it possible to easily perform the pressing off of the slide top from the underside of the wear strips or wear plates.

In this case, the claim 26 proposes preferred adjusting devices for the delivery slide, which are characterized by compact dimensions and ease of use.

The development of the invention according to claim 27 is advantageous in terms of moving the Zustellschiebers in the delivery unit with low friction. With the development of the invention according to claim 28 it is achieved that a guer access to the interior of the crushing machine is given both when assembling the Zer ^¬ reducing machine and later during maintenance. A mechanic can predominantly standing perform there by ^¬ feeding operations and does not have to bend from above into the interior of the crusher. Thus, the comminution tools of the rotor of the comminution unit and the counterblades or the counter knife segments and the sieve segments of the comminution unit can be removed and installed ergonomically.

The development of the invention according to claim 29 makes it possible to modify the combination of crushing unit and Zustelleinheit even at the place of use by connecting instead of an originally supplied delivery unit another, more favorable for a modified application delivery unit with the shredding unit.

In a crushing machine according to claim 30 shredding unit and delivery unit are particularly securely connected.

The invention will be explained in more detail by means of embodiments ^¬ examples with reference to the drawings. In this a top perspective view showing .- Figure 1 a crushing machine with a standard shredding unit and a ver with this ^¬-bound advancer having a horizontal Zustellschieber; Figure 2 is a view similar to Figure 1, but in which the shredding unit and the delivery unit are shown exploded;

Figure 3 is a side view of the crushing machine of Figure 1;

Figure 4 is an end view of the crushing machine

according to Figure 1, wherein the front side of the crushing unit is visible;

Figure 5 is a schematic vertical center section

through the crusher of Figure 1;

Figures 6 to 9 representations, which correspond to Figure 1 and Figures 3 to 5, but in which a crusher is shown with a displaceable in an inclined plane feed slide;

Figures 10 to 13 are views showing the figures 1 and

3 to 5 are similar, but in which a crushing machine is shown with pivotable feed slide;

FIG. 14 shows a perspective view of the comminuting unit, with surrounding housing parts being omitted, looking from the direction of the feed unit onto the comminution unit (the illustration is in mirror image to that of FIG. 1);

FIG. 15 shows a detailed view of rotor and counterme arrangement of the crushing unit according to Figure 14, wherein the counter blade assembly and screen assembly are shown in a working position;

Figure 16 is a view similar to Figure 15, wherein

Counter knife assembly and screen assembly are shown in a maintenance position;

Figure 17 is an enlarged plan view of a part of

Sieve assembly and the counter knife assembly, with some sieve segments are omitted;

FIG. 18 shows a detail view of the frame-side section of a torque assist support, which supports a reduction gear working on the shaft of the comminution rotor, together with the attachment point on the frame of the comminution unit and a vibration damper provided thereon,

FIG. 19 shows a perspective view of the delivery slide of the delivery unit according to FIGS. 1 to 5 and adjacent housing parts of the delivery unit, with some parts being broken away in order to make parts visible thereunder;

FIG. 20 shows a plan view of the end of the feed unit facing away from the comminution unit, in which hydraulic cylinders for moving the feed slide are visible;

FIG. 21 shows a perspective view of an adjusting device, through which the upper side of a feed slide of wear strips on the mold is shown. housing of the delivery unit can be removed;

Figure 22 Details of the storage of rollers of

Zustellschiebers, which by vertical or

rotate horizontal axes;

Figure 23 is a bottom perspective view of a delivery slide showing the arrangement of the various rollers; and

Figure 24 is a view similar to Figure 19, but in a bottom wall of the housing of the feed unit a closable maintenance opening is provided.

FIGS. 1 to 5 show a comminution machine which can be used for comminuting wood, waste wood, plastic materials, bulky waste, metal chips and other materials to be comminuted

The machine comprises two main components, namely a comminution unit, generally designated 10, and a delivery unit, generally designated 12.

These two units are shown in FIG. 1 in a contiguous working configuration in which they have, together, smooth-surfaced boundary walls. The crushing machine thus has a lower leg assembly 14, a central parallelepiped body 16, and a reservoir 18 carried by the latter. The body 16 is that part of the machine that chops material and supplies material to be crushed. The main part 16 carries on his right in Figure 1

located outside an electric drive motor 20. A seated on the shaft pulley

22 is connected by a belt assembly 24 to the input pulley 25 of a reduction gear 26 which operates on an input shaft 28 of a crushing plant to be described later.

An end wall 30 of the shredding unit 10 located on the left front in FIGS. 1 and 2 is provided by lids

32 closed. The side of the comminution unit 10 lying on the right in FIGS. 1 and 2 is closed by a side plate 34, the rear side

the shredding unit by a side plate 36th

The lower portions of the side plates 34, 36 carry a bottom plate 38.

At the latter, at the end remote from the feed unit 12 end of the crushing unit 10 at two

the front corners lying feet 40 is provided. As

seen from the drawing, the feet 40 each have an obliquely downward and outward

Foot portion 42, to which a vertical foot portion 44 connects. The Unteseiten the foot sections 44 wear bearing pad 46th

When the feed unit 12 facing the end of the crushing unit 10 is provided at both ends in each case a twin foot 48, the individual feet 50, 52 are formed similar to the feet 40, with the proviso that the planes of the twin feet 48 perpendicular to planes of the side plates 34, 36 stand. The tops of the end plate 30 and side plates 34, 36 carry a container segment 54 of the reservoir 18, which has an end plate 56 and side plates 58,

60 has.

On the individual plates stiffening rods 62 are welded.

The feed unit 12 accordingly has an end wall 70 and side walls 72, 74 in the region of the machine part 16. A bottom wall 76 closes the space bounded by end wall 70 and sidewalls 72, 74 downwardly. At the end remote from the shredding unit 10, the feed unit 12 rests on feet 40.

On the front half of the side walls 72, 74, a container segment 78 is placed, which has an end plate 80 and side plates 82, 84. The end plate

80 and the side plates 82, 84 are again through

Stiffening rods 62 reinforced.

As can be seen from the drawing, the plates have

30, 34, 36, 70, 72, 74 are all the same height, so that

they form a continuous frame. Accordingly, the plates 56, 58, 60 and 80, 82, 84 have the same

Height, so that together again a rectangular

Frame.

The side plates 82, 84 carry in their left inside in Figure 2 each side a spring bar 86, which are retracted when the container segments 54, 78 moved together between the side plates 58, 60 of the container segment 54. In this way, these plates form one Spring / groove connection, which seal the reservoir 18 at the joint tight.

As can be clearly seen from FIGS. 1 and 2 as well as FIGS. 3 to 5, the comminution unit 16 and

the delivery unit 12 in the in the drawing with

.88 designated abutting surface matching cross-sectional contours. In this way, the various form the housing of the crusher

forming plates a housing which is limited smoothly on both the outside and on the inside.

As can be seen from FIG. 5, the comminuting unit comprises a rotor 90, the structure of which can be seen in detail from FIG. The rotor 90 has

a rotor core 92 which is turned from steel and has V-shaped cross-section pockets 94, in each of which a knife body 96 is screwed tight. The rotor 92 rotates in the counterclockwise direction in FIG. 14 and cooperates with a counter knife blade 98 which comprises knife segments 102 detachably mounted on a strip-like knife carrier 100. When the rotor 92 is driven counter to the working direction (in clockwise direction in FIG. 14), the knife bodies 96 cooperate with a second counter knife bar 104, which are provided offset by 180 ° at the end of the comminution unit 10 facing away from the abutment surface. The counter knife bar 104 includes a

Knife carrier 106 and detachably arranged on this

Knife segments 107.

The counter knife strips 98, 104 and a sieve assembly 108, which is clearly visible in Figure 16 and the between the P2011 / 005496

- 13 -

Counter knife strips 98, 104 lying angle range of the rotor 90 are disposed on a common basket 110, which can be pivoted via hydraulic cylinders 112 which are supported on a transverse support plate 114 which is fixedly connected to the side plates 34, .36 of the crushing unit 10 ,

As can be seen in FIG. 17, the sieve arrangement 108 comprises individual sieve segments 116, which are detachably mounted on the carrier basket 110.

From Figure 5 it can be seen that a feed slide 118 of the feed unit 12 is designed as a box component. Only one rotor-side transversal end piece 120 of the delivery slide is made of solid material. It has an obliquely downwardly and rearwardly extending end face 122.

The feed slide 118 runs over a horizontal feed-in wall 123, which represents the bottom of the storage container 18.

Inside the Zustellschiebers 118 two hydraulic cylinders 124 are arranged, the piston rods are fixed to the end plate 80 of the feed unit 12.

The pressurization of the hydraulic cylinder 124 via a not-shown 4/3 control valve, via which pressure side and return side of a hydraulic unit 126 with the working spaces of the double-acting hydraulic cylinder 124 are connectable to the feed slide 118 to the rotor 98 to or from to move this away. When feeding onto the rotor 90, the feed slide 118 presses comminution material which is discharged from the reservoir 18 onto the floor. 011 005496

- 14 -

plate 86 against the fitted with the knife bodies 96 circumferential surface of the rotor 92. This material is then crushed at the point of contact between the knife bodies 96 and the teeth of the counter knife bar 98 (crushing gap).

Fragments passing through the openings of the sieve segments 116 fall downwardly through the sieve assembly 108 into a chopped crumb collection chamber 128 from which the shredded material is carried out by an endless conveyor, auger, transport air or other means (not shown).

Insufficiently comminuted material is again fed to the comminution gap.

The hydraulic unit 126 is attached to the underside of the bottom plate 86 ^¬ , as well visible from Figures 3 to 5.

FIGS. 6 to 9 show a comminution machine which is similar to the comminution machine shown in FIGS. 1 to 5. Corresponding components are again provided with the same reference numerals, even if they differ in details of their design, provided that they fulfill only the same function. These parts need not be described again in detail.

In the comminution machine shown in FIGS. 6 to 9, the feed slide 118 is guided in a plane sloping downwards towards the rotor 90. Accordingly, the side plates 58, 60 designed trapezoidal, also the side plates 82, 84 of the container segment 78th In the embodiment of Figures 10 to 13 are also such components that functionally

correspond to already described with reference to Figure 1 components, again provided with the same reference numerals. They also need below

not to be described again in detail.

Differences between the crushing machine according to FIGS. 10 to 13 and those according to FIGS. 1 to 6 again only exist in the design of the feed unit 12.

In the feed unit 12, as can be seen in FIG. 13, a circular-shaped feed slider 118 is provided, which is pivotable on an axis 132, which is parallel to the axis of the rotor 90, by means of arms 130 cranked at its ends. The effective length of the arms 130 is chosen so that the end part

120 again tapers substantially radially to the rotor 90 as in the previous embodiments. The bottom plate 76 is now also part-cylindrical according to the geometry of the feed slide 118. She is from

Crossbars 134 of the delivery unit 12 held.

The container segment 78 now overlaps the container segment 54, for which purpose it has wall sections 56 ', 58', 60 ', which lie in extension of the walls 56, 58, 60.

The above-described type of mounting of the feed slide 118 has the advantage that it does not need extended linear guides in order to guide the feed slide 118 in a predetermined way. To guide rich bushings of the bearing arms 128, with the ends of the stub axle

132 work together. PT / EP2011 / 005496

- 16 -

It can be seen that one can realize such a feed slide 118, which has a large displacement, but the overall dimensions of the crushing machine are still compact.

When using a circular-shaped feed slide 118 can also accommodate the hydraulic unit 126 in the space remaining under the curved feed wall 123.

For crushing materials such as wood, waste wood, plastic, etc. between the knife bodies 96 of the rotor 92 and the teeth of the counter knife bar 98 large forces are required. Used Antriebsmo ^¬ factors with some 10 to some 100 kW, and the crushing forces to increase again, is typically switched yet a reduction gear between the output shaft of the drive motor 20 and the shaft of the rotor 90, as shown in the drawings at 26th

The housing of the lower gear 26 must therefore be very reliably supported against rotation.

As shown in Figure 14, the reduction gear 26 depends on an axially parallel support 136 which is articulated via a support fork 138 on one of the twin feet 48. This is done in detail via an end portion 140 of the support fork 138, a hinge 142 and a vibration damper 144th

As can be seen from FIG. 19, wear rails 146 are screwed onto the upper side of the feed wall 123 of the feed unit 12, to which comminution good from the reservoir 18 falls.

Similar wear rails 148 are placed on the side plates 72, 74 of the feed unit 12.

An uppermost thicker wear strip 150 protrudes inward at the upper end of the side plate 72 and 74 so far that it slightly overlaps the upper side of the feed slide 118. The top of the Zustellschiebers 118 is also wearing belts

148 busy to protect the slide top against wear by crushed material.

So that you can easily replace the protruding wear strip 150, the Zustellschieber 118 can be adjusted slightly down to provide the wear plate 150 without contact.

For this purpose (see Figures 22 and 23) in the bottom of the feed slide 108 slide rollers 154 are used, which are rotatable about horizontal axes 156. The axles 156 are under the bias of coil springs 158 which are supported on the housing of the Zustellschiebers 118.

The slider rollers 154 run on top of the

Infeed wall 123, and by applying a vertical downward force, the feed slide 118 can be moved down by a few mm, wherein the coil springs 158 are compressed.

This downward movement of the feed slide 118 can be carried out using an eccentric drive 160 shown in FIG. It comprises a shaft 162 which at the outer end with a six-axis Edge 167 is provided on which a wrench can be attached. The shaft 162 carries an eccentric ^¬ disk 164 that engages a lateral pulling slot 166 of the side wall of the Zustellschiebers 118th

In this way one can move the feed slide 118 away from the underside of the protruding wear strip 150 by turning the shaft 162, so that

there arises a distance A (see Figure 21). In this way you can then wear strip 150 decreased without them would be under tension.

The side walls of the delivery slide 108 store over

vertical axes 169 circumferential slide rollers 168, which are biased by coil springs 170 in the horizontal outward direction.

In this way, the feed slide 118 is guided resiliently in the vertical and lateral horizontal direction on the housing of the feed unit 12.

To provide access to the interior of the reservoir and the knife body 96 of the rotor 90, the

Knife segments 102 and the screen segments 116 easier to replace or troubles inside the machine easier to fix, a maintenance opening 172 is provided in the bottom plate 76.

The maintenance opening 172 is normally through a

Door 174 closed. This can be an element which simply enters the service opening

172 is inserted and there, for example is secured by tightening, being supported by underlying cross member 176 of the feed unit 12. Alternatively, one can connect the door 174 on one side via hinges to the bottom plate 76.

Claims

claims

1. Crushing machine with a crushing unit (10) and a feed unit (12) for moving comminuted material to the comminution unit (10).

2. Crushing machine according to claim 1, characterized

in that the comminution unit (10) and the feed unit (12) have mutually matching end faces on an abutment surface (88) lying between them.

3. Crushing machine according to claim 1 or 2, characterized in that the mating ones

End surfaces of shredding unit (10) and feed unit (12) have at least one section (86) via which comminution unit (10) and feed unit (12) are positively connected.

4. Crushing machine according to one of claims 1

to 3, characterized in that the crushing unit (10) can stand on a AufStellfläche tipping over their associated feet (40, 42, 52).

5. Crushing machine according to claim 4, characterized

characterized in that below the feet of the comminution unit (10) are two (40, 42) which are provided at the side facing away from the abutment surface (88) of the comminution unit (10), and two (52), which are at the Flank surface (88) facing side of the crushing unit (10) are provided.

6. Crushing machine according to claim 5, characterized in that the abutting surface (88) Benach ^¬ bare feet (52) of the comminution unit (10) as

Multiple feet, in particular twin feet are formed

7. Crushing machine according to one of the claims

1 to 6, characterized in that the comminution unit (10) and / or the delivery unit

(12) have cranked feet (40, 42, 52).

8. Crushing unit according to one of the claims

4 to 7, characterized in that the feet (40, 42, 52) are designed as plate constructions.

9. Comminution unit according to one of claims 1

A container (18) for material to be crushed, a first container segment (54), which is supported by the shredding ^¬ approximation unit (10), and a second Be ^¬ hältersegment (78), which from the - to 8, characterized in that a supply Zustell ^¬ unit (12) is worn.

10. Crushing machine according to one of the claims

1 to 9, characterized in that the comminution unit (10) and the feed unit (12) have aligned walls (30, 34, 36, 50 and 70, 72, 74, 76; 56, 58, 60 and 80, 82, 84) exhibit.

11. Crushing machine according to one of the claims

1 to 10, characterized in that peripheral walls (30, 44, 36 of the comminution unit (10) and peripheral walls (72, 74, 76) of the feed unit (12) have lower edges, which lie at the same height, preferably bottom walls (50 , 76) of comminution unit (10) and Infeed unit 12) are aligned.

12. Crushing machine according to claim 11, characterized

in that a drive motor (20) is arranged at least partially in a space which is below the plane of the lower edges of the side walls (34, 34).

36) of the shredding unit (10).

13. Crushing machine according to claim 11 or 12,

characterized in that a hydraulic unit

(126) of the feed unit (12) lies at least partially below the level of the lower edges of the side walls (72, 74) of the feed unit (12).

14. Crushing machine according to one of the claims

1 to 13, characterized in that the feed unit (12) has an adjustable in a horizontal plane feed slide (118).

15. Crushing machine according to one of the claims

1 to 13, characterized in that the feed unit (12) has a feed slide (118) running in a plane inclined to the horizontal.

16. Crushing machine according to one of the claims

1 to 13, characterized in that the feed unit (12) has a feed slide (118) pivotable about a horizontal axis (132).

17. Crushing machine according to one of the claims

1 to 16, characterized in that a torque support (138) for a on a shaft (28) of the crushing unit (10) working drive component (26) on a foot (52) of the crushing unit (10) is supported, preferably with interposition one Vibration damper (144).

18. Crushing machine according to one of the claims

1 to 17, characterized in that the comminuting unit (12) has a rotor (90) equipped with comminution tools (96) and a counter-rotating knife assembly (98) cooperating with the comminuting tools (96), and in that the counterblade assembly (98 ) is movable between a work position cooperating with the rotor (90) and a maintenance position withdrawn from the rotor (90), preferably by a servo drive, in particular at least one hydraulic cylinder (112).

19. Crushing machine according to claim 18, characterized

characterized in that the shredding unit (10) comprises a sieve arrangement (108) which at least partially surrounds the rotor (90) and the sieve arrangement (90) between a working position adjacent to the rotor (90) and a maintenance unit withdrawn from the rotor (90). position is movable, preferably by a servo drive, in particular at least one hydraulic cylinder (112).

20. Crushing machine according to claim 18 or 19,

characterized in that the counter knife assembly (104) and the screen assembly (108) are coupled for common movement.

21. Crushing machine according to one of the claims

18 to 20, characterized in that the servomotor (112), which serves to adjust the counter blade arrangement (104) and / or screen arrangement (108), protrudes into a space which under a bottom plate (76) of the Delivery unit (12) is located.

22. Crushing machine according to one of the claims

1 to 21, characterized in that a sieve arrangement (108) surrounding a rotor (90) of the comminuting unit (10) has a carrier basket (110) to which a plurality of sieve segments (116) are attached, preferably detachably mounted.

23. Crushing machine according to claim 22, characterized

in that the carrying basket (110) is provided with a

Knife carrier strip (106) is connected, which carries a plurality of knife segments (102), preferably releasably carries.

24. Crushing machine according to one of the claims

1 to 23, characterized in that a feed slide (118) of the feed unit (12) via slide rollers (154) on a bottom wall (76) of the feed unit (12) is displaceable, wherein the slide rollers (154) are rotatable about an axis which parallel to the bottom wall (76).

25. Crushing machine according to claim 24, characterized by an adjusting device (162 to

166) which is supported on a frame portion of the feed unit (10) and engages the feed slide (118) so that the latter in the plane of the bottom wall (76) inclined, preferably perpendicular thereto is adjustable.

26. Crushing machine according to claim 25, characterized

characterized in that the adjusting device (162 to 166) comprises a screw drive, a wedge gear, a

Cam gear, an electromagnet or a fluid actuated drive has.

27. Crushing machine according to one of claims 1 to 26, characterized in that a An ^¬ push slider (118) in side walls with slide rollers (168) is provided, which is rotatable about a plane of a bottom wall (76) perpendicular direction and one to the plane the bottom wall (76) are rotatable parallel axis.

28. Crushing machine according to one of the claims

1 to 26, characterized in that in a

Bottom wall (76) of the feed unit (12) a maintenance opening (172) is provided which can be closed under working conditions by a door (174), which is preferably attached via a hinge assembly (178) on the bottom wall (76).

29. Crushing machine according to one of the claims

1 to 28, characterized in that the comminution unit (10) and the feed unit (12) are detachably connected to each other.

30. Crushing machine according to one of the claims

1 to 28, characterized in that the shredding unit (10) and the feed unit (12) are fixedly connected to each other, for. B. by welding.