DE102021120203B4 - crushing device - Google Patents

Abstract

Crushing device (1) for comminuting material to be comminuted, with- a housing (2) with two side elements (3) and two end elements (4) each having a base support (8) and a clamping element (9),- one on the housing (2) arranged first rotary body (10) driven by a first drive (16) with a first axis of rotation (R1) extending in a main plane (H) and at least one first comminution element (19) and one arranged parallel to the first rotary body (10), a second rotary body (11) driven by a second drive (16) with a second axis of rotation (R2) extending in the main plane (H) and at least one second comminuting element (20) cooperating with the first comminuting element (19), one parallel to the first Rotating body (10) arranged, by a third drive (16) driven third rotating body (12) with a distance to the main plane (H) ang third axis of rotation (R3) extending on the third secondary plane (N) and at least one third comminution element (21) cooperating with the first comminution element (19), - a fourth rotation body ( 13) with a fourth axis of rotation (R4) extending in the secondary plane (N) and at least one fourth comminuting element (22) cooperating with the second comminuting element (20), characterized in that the clamping element (9) along a front element (4 ) arranged guide (27) between a clamping position securing the position of the rotary bodies (10, 11, 12, 13) and a removal position releasing the rotary bodies (10, 11, 12, 13) for removal and- on the base support (8) and/ or the clamping element (9) between the first and the second rotating body (10, 11) with the clamping element (9) and/or the base support (8) in E engageable centering element (46) is arranged.

Description

• - einem Gehäuse mit zwei Seitenelementen und zwei jeweils einen Grundträger und ein Klemmelement aufweisenden Stirnelementen,
• - einem an dem Gehäuse angeordneten, durch einen ersten Antrieb angetriebenen ersten Rotationskörper mit einer sich in einer Hauptebene erstreckenden ersten Rotationsachse und mindestens einem ersten Zerkleinerungselement und
• - einem parallel zum ersten Rotationskörper angeordneten, durch einen zweiten Antrieb angetriebenen zweiten Rotationskörper mit einer sich in der Hauptebene erstreckenden zweiten Rotationsachse und mindestens einem mit dem ersten Zerkleinerungselement zusammenwirkenden zweiten Zerkleinerungselement.

The invention relates to a comminuting device for comminuting material to be comminuted

• - a housing with two side elements and two end elements each having a base support and a clamping element,
• - a first rotary body which is arranged on the housing and is driven by a first drive and has a first axis of rotation extending in a main plane and at least one first comminution element and
• - A second rotary body which is arranged parallel to the first rotary body and is driven by a second drive and has a second axis of rotation extending in the main plane and at least one second comminuting element which interacts with the first comminuting element.

Crushing devices of the type mentioned at the outset are used in the recycling industry to crush different goods, such as old tires, sheet metal parts or various consumer goods, in order to then be able to feed them into raw material recovery.

For comminuting material to be comminuted, the comminution devices have at least two shaft-shaped rotary bodies which are mounted in a stable housing frame and to which disc-shaped comminuting elements are attached, which interact when the rotary bodies rotate in such a way that the material to be comminuted is comminuted between the comminuting elements. The at least two rotary bodies rotate in opposite directions, so that the material to be comminuted, which is fed in from above in relation to the position of use, is guided through a comminution gap between the rotary bodies during the comminution process and is thereby comminuted or crushed.

Due to the high loads, the comminution elements are subject to high wear during the comminution process. In order to be able to ensure long-term reliable operation of the comminution device, it is therefore necessary to replace the comminution elements as part of regular maintenance and/or repair work. To do this, it is necessary to remove the rotating bodies from the comminution device and to reinstall them after replacing the comminution elements.

From the EP 1 099 481 B1 For example, a comminuting device with a two-part end element, with a lower end part element and an upper end part element, is known. The two end-part elements are each attached separately to side parts, so that the upper end-part element can be removed from the housing frame in order to remove the at least one cutting shaft mounted between the two end-part elements.

The CN 106 807 516 A shows a four-shaft shredder with two grinding rotary shafts and two shredding shafts.

Known comminution devices have the disadvantage that the comminution elements have to be replaced particularly frequently due to the consistently high level of wear on the comminution elements, as a result of which the availability of the plant decreases.

Proceeding from this, the invention is based on the object of providing a comminution device which enables rapid installation and removal of the rotary body in order to achieve high plant availability and reduces wear on the comminution elements.

The invention solves the problem by a comminution device with the features of claim 1. Advantageous developments of the comminution device are specified in the dependent claims.

A third rotary body arranged parallel to the first rotary body and a fourth rotary body arranged parallel to the second rotary body are characteristic of the comminuting device according to the invention. According to the invention, the third rotating body is driven by a third drive and the fourth rotating body is driven by a fourth drive. According to the invention, the third rotary body has a third axis of rotation extending in a secondary plane arranged at a distance from the main plane and at least one third comminution element cooperating with the first comminution element. According to the invention, the fourth rotary body has a fourth axis of rotation extending in the secondary plane and at least one fourth comminution element that interacts with the second comminution element.

The end elements each have a base support and a clamping element and are arranged parallel to one another on the housing of the comminution device. The base support is screwed to the side elements, for example. The front elements are preferably arranged perpendicular to the main plane. The Klemmele ment is detachably attached to the base support. For example, the clamping element has fastening means, eg bores, for fixing a transport bridge. The side elements extend between the two end elements and are arranged parallel to one another, for example. In addition, the front elements and the side elements are preferably designed like plates, ie the thickness is significantly less than the width and/or length. The front and side members are preferably formed from a metallic material. The housing has a chamber-like interior formed by the side and front elements, in which the rotary bodies are arranged. The interior has a first free area and a second free area. The two free areas are spaced apart from the main plane and are preferably arranged parallel to it. In relation to the position of use of the comminution device, the first free area is arranged above the main plane and the second free area is arranged below the main plane.

The rotating bodies are cylindrical, e.g. wave-shaped, each mounted on the end elements between the base support and the clamping element, e.g. in bearing units, e.g. roller bearings such as spherical roller bearings, and can be driven separately by the four drives. The rotating bodies are connected to the drives, for example, via coupling elements, for example non-switchable couplings. The first and second axes of rotation each extend in the main plane. The third and fourth axes of rotation each extend in the secondary plane. The secondary plane is spaced apart from the main plane and preferably arranged parallel to it. The bodies of revolution are arranged in the main and secondary planes in such a way that a step-like arrangement of the bodies of revolution is formed. The rotary bodies are preferably arranged symmetrically to a plane of symmetry that runs centrally between the two side elements and is arranged perpendicularly to the main plane. For example, the first and second bodies of revolution and/or the third and fourth bodies of revolution are each at the same distance from the plane of symmetry. The secondary plane and the main plane run parallel to a plane of the comminuting device that is horizontal in the position of use.

The first and the second rotating body preferably form a so-called main cutting unit. The first body of rotation is arranged parallel and preferably adjacent to the second body of rotation, so that a first crushing gap is formed between the first and the second body of rotation. The third and the fourth rotary body preferably form what is known as a secondary cutting mechanism. The third rotary body is arranged parallel and preferably adjacent to the first rotary body and the fourth rotary body is arranged parallel and preferably adjacent to the second rotary body, so that a second crushing gap is formed between the third and fourth rotary bodies. The secondary cutting unit has a greater distance between the rotating bodies than the main cutting unit. The second comminution gap is preferably designed to be larger than the first comminution gap.

The comminution elements are disk-like. The comminuting elements are each arranged coaxially to the axes of rotation on the rotary bodies. For example, the first comminution element is arranged coaxially to the first axis of rotation on the first body of rotation. Furthermore, the comminution elements are arranged in a region of the rotary bodies that extends between the two end elements. Preferably, the rotary bodies each have a plurality of comminution elements, which are preferably arranged on the rotary bodies in a manner that prevents them from rotating and is particularly preferably detachable. For example, the rotary bodies are designed as splined shafts and the comminuting elements have free areas adapted to the splined shaft, so that the comminuting elements can be pushed onto the splined shafts before installation in the comminuting device.

During operation of the comminution device, the material to be comminuted is supplied to the interior of the housing through the first free area. The third rotary body preferably rotates synchronously with the first rotary body. The fourth rotary body preferably rotates synchronously with the second rotary body. The first and second rotary bodies rotate in opposite directions, so that the material to be comminuted is passed between the first and second comminuting gap between the rotary bodies. Here, the at least two first and second comminution elements interact in such a way that the material to be comminuted is comminuted or crushed. The load on the first and second comminuting elements is relieved by the third and fourth comminuting elements.

To change the rotary body, for example in the case of maintenance or repairs, the comminution process is terminated and the clamping element is released from the base support. A transport bridge, for example, can be mounted on the fastening means on the clamping element, for example, so that the clamping element can be lifted off the base support. The couplings of the rotary bodies are released so that the rotary bodies can be removed from the housing. For example, the worn crushing elements can be exchanged or preferably Rotating bodies with the worn comminuting elements are replaced by other rotating bodies already pre-assembled with new comminuting elements. In this case, different rotating bodies can also have different comminution elements which are designed, for example, in such a way that special materials, for example plastic materials, can be comminuted more reliably. The clamping element is then placed again on the base support and fastened to it.

The wear on the comminuting elements can be reduced by the third and fourth rotary bodies according to the invention, and the operating costs can thus also be lowered. The arrangement of the rotary bodies according to the invention ensures high throughput rates. With the at least four rotary bodies, it is possible for even interfering material, i.e. material to be comminuted which is difficult to comminute, to be comminuted with the comminution device. Due to the fact that the rotary bodies are mounted on the front elements between the base support and the clamping element, the rotary bodies can be replaced more quickly, thereby reducing maintenance costs.

According to the invention, it is provided that the clamping element can be adjusted along a guide arranged on the end element, in particular on the base support, between a clamping position that secures the rotary bodies in position and a removal position that releases the rotary bodies for removal. In the clamping position, the clamping element is arranged in the guide on the base support in such a way that the rotary bodies are each arranged in a secured position between the base support and the clamping element, e.g. are clamped. The base support has a free area in which the clamping element is accommodated in the clamping position. The free area has four first partial clamping sections, each assigned to one of the four rotating bodies. In the clamped position, the first partial clamping sections form, together with four second partial clamping sections arranged on the clamping element, four clamping sections for receiving the rotary bodies in a position-securing manner.

Preferably, the first and second partial clamping sections are each adapted to the circumference of the rotary bodies and are designed, for example, in the shape of a semicircle. Two guides are preferably arranged on a base support, between which the four partial clamping sections are arranged. Starting from the clamping position, the clamping element can be adjusted, e.g. slid, into the removal position. In the removal position, the clamping element can be removed from the guide and the rotary bodies are released for removal from the housing. Because the clamping element can be adjusted along the guide between the clamping position and the removal position, the rotary bodies can be installed or removed particularly efficiently. This can further reduce downtimes and maintenance costs.

In relation to the main plane, the clamping element can be adjusted in any direction, for example parallel to the main plane, between the clamping position and the removal position. According to a further development of the invention, however, it is provided that the clamping element can be adjusted perpendicularly to the main plane between the clamping position and the removal position. The guide is arranged in the free area on the base support and is preferably arranged at an acute angle, particularly preferably at an angle of 0-85°, to the main plane. Starting from the removal position, the clamping element can be inserted perpendicularly to the main plane along the guide, in particular along the two guides, into the base support, in particular the free area of the base support. In relation to the position of use of the comminution device, the clamping element can be removed from the base support from above and/or inserted into it. This ensures that the clamping element can be adjusted more easily and is held more stably on the base support in the clamping position due to the arrangement of the guide. Furthermore, the clamping element can thereby be adjusted more reliably in the guide between the clamping position and the removal position.

According to an advantageous embodiment of the invention, it is provided that the comminution device has a locking element which is arranged on a front element and fixes the clamping element in the clamping position. The locking element is embodied, for example, in the manner of a cylinder and has, for example, a circular, polygonal or elliptical cross section. The locking element is preferably arranged detachably between the base support and the clamping element. In the clamping position, the locking element can be adjusted between a blocking position that blocks the adjustment of the clamping element and a release position that releases the clamping element for adjustment into the removal position. The locking element preferably has a coupling section, e.g. an internal thread or a hexagon socket, for interaction with a tool, e.g. an Allen key. The locking element advantageously counteracts an undesired displacement of the clamping element.

The locking element can be arranged anywhere on the end element, for example in the area of the guide on the base support. After a beneficial ten development of the invention, however, it is provided that the locking element is releasably arranged in a receptacle in the clamped position, which is formed in the clamped position by a first receiving section on the base support and a second receiving section on the clamping element. The receptacle is preferably an opening in the front element, in which the locking element is arranged in the clamping position in the blocking position. In this case, the two receiving sections are free sections of the base support or of the clamping element, which form the opening in the clamping position. The first receiving section is preferably arranged on the base support in the region of the guide, preferably adjacent to the guide. The two receiving sections are designed in such a way that the locking element can be adjusted in the clamped position along the receptacle between the blocked position and the released position. For example, the receiving sections are designed in such a way that a locking element designed as a cylindrical pin, for example, can be arranged in the receiving device. The receiving sections preferably have a cross section, for example semicircular or polygonal, which extends parallel to the axes of rotation. Because the locking element is arranged in the receptacle formed by the receiving sections, a simple and reliable locking of the clamping element in the clamping position can be made possible in an advantageous manner.

According to an advantageous embodiment of the invention, it is provided that the guide has a groove arranged on one of the base support and the clamping element and a guide element arranged on the other of the base support and the clamping element. The groove is preferably arranged on the base support, in particular adjacent to the free area of the base support. The guide element can be formed in one piece with the base support or the clamping element or can be detachably connected to the base support or the clamping element. The guide element is preferably detachably connected to the base support or the clamping element. The guide element is preferably arranged on the clamping element and preferably designed in such a way that it can be displaced within the guide. For example, the guide element is designed as a feather key. The key can be adjusted within the groove, e.g. moved. This advantageous embodiment of the invention makes it possible to provide a guide that is simple and inexpensive to produce.

According to a further embodiment of the invention, it is provided that the clamping element can be connected to the base support in the clamping position by a securing element extending perpendicularly to the main plane. The securing element is e.g. designed like a cylinder and is preferably arranged on and/or in the clamping element and on and/or in the base support in such a way that the clamping element is secured against unwanted adjustment in the clamping position. The securing element preferably penetrates through the clamping element in the clamping position and is in engagement with the base support. Three securing elements are preferably arranged on the end element. For example, a first securing member is interposed between the first and second rotary bodies. A second and a third securing element are arranged, for example, in the area of the guides. For example, the securing element is a cylinder screw according to DIN 912. In the clamped position, the cylinder screw is, for example, arranged in a bore within the clamping element and engages with a thread arranged on the base support. The securing element can further counteract an undesired displacement of the clamping element in support of the locking element, so that the clamping element reliably secures the rotary bodies on the front element during the comminution process.

According to an advantageous development of the invention, it is provided that the comminution device has a first wearing element arranged on the base support and a second wearing element arranged on the clamping element. A third wearing element is preferably arranged on each of the side elements. The wear elements are arranged on the housing and are preferably detachably arranged on the end elements or the side elements. The first and second wear elements are preferably designed in the form of plates and have a smaller thickness than the end element. The first wear member is mated to the base and the second wear member is mated to the clamp member. The second wearing element is preferably adjustable with the clamping element.

The wearing elements are made of a metallic material, for example, and protect the front and side elements from wear, ie from wear and tear caused by the material to be comminuted. The third wear element preferably has a significantly greater thickness than the first and/or second wear element. Furthermore, the third wearing element is arranged at a distance from the main plane and is preferably arranged closer to the first free area of the interior. Furthermore, the third wearing element is designed in such a way that the material to be comminuted is held in the interior by the third wearing element. For example, the third wear element has an increasing thickness in a direction opposite to the main plane. Preferred are on a side element arranged several third wearing elements, which preferably adjoin each other and are separately replaceable in case of maintenance. The wear elements can advantageously ensure that the front and side elements are protected. After the wearing elements have been irreparably damaged by the high loads during the shredding process, they can be replaced quickly and easily. The rotating bodies can be arranged in any way between the base support and the clamping element in storage units. According to a further embodiment of the invention, however, it is provided that the comminuting device has a first spacer element arranged between the base support and the first wear element and a second spacer element arranged between the clamping element and the second wear element. The spacer elements are preferably designed in such a way that the bearing units are each arranged, preferably clamped, between the base support and the first wearing element and/or the clamping element and the second wearing element. The spacer elements are preferably of identical design. For example, the spacer elements are cuboid, for example as a spacer block. The distance between the base support and the first wear element and/or the distance between the clamping element and the second wear element is defined by the spacer elements. Indentations for receiving the storage units in a rotationally secured manner can be arranged on the base support and the clamping element. Due to the spacer elements, the bearing units can be arranged in a rotationally secured manner between the base support, the clamping element and the first and second wearing element in a simple and particularly reliable manner.

According to the invention, it is provided that a centering element that can be brought into engagement with the clamping element and/or the base support is arranged on the base support and/or the clamping element between the first and the second rotary body. The centering element is preferably designed in the manner of a cylinder and preferably has a circular, polygonal or elliptical cross-section, for example, which extends perpendicularly to the main plane. For example, the centering element is designed like a pin, e.g. as a cylindrical pin.

The centering element is arranged on the base support or the clamping element and is preferably formed in one piece with the base support or the clamping element, for example by means of a press connection. On the clamping element or the base support, an opening, e.g. The centering element is engageable with the opening. When the clamping element is adjusted from the removal position into the clamping position, the centering element is brought into engagement with the opening. The centering element can ensure that the clamping element is reliably aligned and centered on the base support.

According to a particularly advantageous development of the invention, it is provided that the comminution device has a damping element arranged on one of the drives. The drives are each arranged on the damping elements. The damping elements are preferably of identical design and preferably have a core element and a jacket element surrounding the core element. The core element is made of a metallic material, for example, and the jacket element is preferably made of a damping plastic material, for example polyurethane. In addition, the damping elements are designed in the manner of cylinders and have, for example, a circular, polygonal or elliptical cross section. Four damping elements are preferably arranged on each of the two drives. The damping elements protect the drives against shocks and impulses during the shredding process.

According to an extremely advantageous development of the invention, it is provided that the end elements are each arranged on a support element arranged on a support unit. The support unit is designed, for example, like a frame. The housing is placed on the support unit. The front elements are preferably each arranged on a separate support element. The crushing device is preferably anchored to the support unit in a subsurface, e.g. a concrete surface or another type of floor. The support unit advantageously ensures that the comminution device is secured against the high forces, impulses and impacts during the comminution process.

According to a further development of the invention, the comminution device has a control unit for controlling the comminution process. The control unit is preferably designed as a programmable unit, eg as a computer. Furthermore, the control unit is preferably connected to sensors, for example sensors for monitoring the torque of the rotating bodies. In addition, the control unit is preferably connected to control means for the drives. The control unit is preferably designed in such a way that, depending on sensor signals, it generates a predefinable Program, such as a control program executes. The program that can be specified has, for example, setting options for specified process times, setting options for torque values or setting options for different process sequences, such as the directions of rotation of the rotary bodies.

• 1 eine perspektivische Ansicht einer Zerkleinerungsvorrichtung;
• 2 eine Explosionsdarstellung der Zerkleinerungsvorrichtung von 1;
• 3 eine perspektivische Ansicht eines Gehäuses der Zerkleinerungsvorrichtung von 1 mit einem in einer Klemmstellung angeordneten Klemmelement und einem in einer Sperrstellung angeordneten Arretierungselement und
• 4 eine perspektivische Ansicht eines Gehäuses von 3 mit einem in einer Entnahmestellung angeordneten Klemmelement und einem in einer Freigabestellung angeordneten Arretierungselement.

An embodiment of the invention is explained below with reference to the drawings. In the drawings show:

• 1 a perspective view of a crushing device;
• 2 an exploded view of the crushing device of 1 ;
• 3 a perspective view of a housing of the crushing device of 1 with a clamping element arranged in a clamping position and a locking element arranged in a blocking position and
• 4 a perspective view of a housing of 3 with a clamping element arranged in a removal position and a locking element arranged in a release position.

In 1 a crushing device 1 is shown in a perspective view. The comminution device 1 has a housing 2 with two side elements 3 and two end elements 4 . The end elements 4 and the side elements 3 are each arranged parallel to one another and form a chamber-like interior space 5 . The comminution device 1 has a support unit 6 with support elements 7 . The housing 2 is arranged with the front elements 4 each on a support element 7 .

The end elements 4 each have a base support 8 and a clamping element 9 . A first rotating body 10 and a second rotating body 11 are arranged parallel to one another on the housing 2 . A third rotating body 12 is arranged parallel to the first rotating body 10 and a fourth rotating body 13 is arranged parallel to the second rotating body 11 . The first body of revolution 10 has a first axis of rotation R1 and the second body of revolution 11 has a second axis of rotation R2. The first and second axes of rotation R1, R2 extend in a main plane H. The third body of rotation 12 has a third axis of rotation R3 and the fourth body of rotation 13 has a fourth axis of rotation R4. The third and fourth axes of rotation R3, R4 extend in a secondary plane N arranged at a distance A parallel to the main plane H. The rotating bodies 10, 11, 12, 13 are each in bearing units 15, here spherical roller bearings, between the base support 8 and the clamping element 9 arranged. The rotary bodies 10 , 11 , 12 , 13 can each be driven separately by drives 16 arranged on the support unit 6 . The drives 16 are each connected to the rotating bodies 10, 11, 12, 13 via couplings 17 and are each protected from shocks or impulses by four identically designed damping elements 18 which are arranged between the support unit 6 and the drives 12.

The first rotary body 10 has a plurality of first comminution elements 19 and the second rotary body has a plurality of second comminution elements 20 which interact with the first comminution elements 19 . The third rotary body 12 has a plurality of third comminution elements 21 cooperating with the first comminution elements 19 and the fourth rotary body 13 has a plurality of fourth comminution elements 22 cooperating with the second comminution elements 20 . The comminuting elements 19, 20, 21, 22 are each arranged coaxially to the axes of rotation R1, R2, R3, R4 on the rotary bodies 10, 11, 12, 13.

The first and second rotary body 10, 11 form a main cutting mechanism 23 and the third and fourth rotary body 12, 13 form a secondary cutting mechanism 24. A first crushing gap 25 is arranged between the first and second rotary body 10, 11 and between the third and fourth rotary body 12, 13, a second crushing gap 26 is arranged. The second comminution gap 26 is larger than the first comminution gap 25 (cf. 2 ).

The clamping element 9 is located along two guides 27 arranged on the base support 8 between a bearing-securing, in 3 shown, clamping position and the rotary bodies 10, 11, 12, 13 releasing for removal, in 4 shown removal position adjustable. The base support 8 has a free area 28 with four first partial clamping sections 29 each assigned to one of the four rotary bodies 10, 11, 12, 13, in which the clamping element 9 is arranged in the clamping position. The first partial clamping sections 29, together with four second partial clamping sections 30 arranged on the clamping element 9, form four clamping sections 31 in the clamping position for receiving the rotary bodies 10, 11, 12, 13 in a position-securing manner. The first and second partial clamping sections 29, 30 are each attached to the circumference of the rotary bodies 10 , 11, 12, 13 adapted and formed semicircular. In the clamping position, the clamping sections 31 are arranged between the guides 27 . The guides 27 each have a groove 32 arranged on the base support 8 and a guide element arranged on the clamping element 9 in the form of a Key 33 on. Starting from the clamping position, the clamping element 9 can be removed from the base support 8 perpendicularly to the main plane H along the two guides 27 and inserted into it.

At least one locking element 34 that fixes the clamping element 9 in the clamping position is arranged on the end elements 4 in each case. The locking element 34 is arranged in a receptacle 35 which, in the clamped position, is formed by a first receptacle section 36 on the base support 8 and a second receptacle section 37 on the clamping element 9 . The receptacle 35 is arranged in the clamping position in the area of the guide 27 . The locking element 34 is between a blocking the adjustment of the clamping element 9, in 3 illustrated, blocking position and the clamping element 9 releasing for adjustment, in 4 shown, release position adjustable.

In the clamping position, the clamping element 9 is connected to the base support 8 by three securing elements 14, 38, 39 extending perpendicularly to the main plane H. A first securing element 14 is arranged between the first and second rotating body 10,11. A second and third securing element 38, 39 are arranged in the area of the guides 27. In the clamping position, the securing elements 14 , 38 , 39 are arranged in a bore within the clamping element 9 and are engaged with a thread arranged on the base support 8 .

A first wearing element 40 is arranged on the base support 8 and a second wearing element 41 is arranged on the clamping element 9 . Three third wear elements 42 are arranged on each of the side elements 3 . The wearing elements 40, 41, 42 protect the front and side elements 3, 4 from wear and are replaceable after irreparable damage or when the wear is too high. The first wearing element 40 is adapted to the base support 8 and the second wearing element 41 to the clamping element 9 . The second adjustment element 41 can be adjusted with the clamping element 9 . The third wear element 42 has a greater thickness than the first two wear elements 40,41. At least one first spacer element 43 is arranged between the base support 8 and the first wearing elements 40 . At least one second spacer element 44 is arranged between the clamping element 9 and the second wear element 41 . As a result, the bearing units 15 are each clamped between the base support 8 and the first wearing element 40 and the clamping element 9 and the second wearing element 41 . On the base support 8 and the clamping element 9 there are also depressions 45 for receiving the bearing units 15 in a manner secured against rotation.

A centering element 46 is arranged on the clamping element 9 and is formed in one piece with the clamping element 9 by means of a press connection. The centering element 46 can be brought into engagement with a bore 47 running perpendicularly to the main plane H on the base support 8 in the clamped position.

The comminution device 1 has a control unit (not shown) for controlling a comminution process. When the comminution device 1 is in operation, the material to be comminuted (not shown) is supplied to the interior space 5 of the housing 2 . The first and second rotary bodies 10, 11 rotate in opposite directions. The third rotary body 12 rotates synchronously with the first rotary body 10 and the fourth rotary body 13 rotates synchronously with the second rotary body, so that the material to be comminuted is first passed through the second comminution gap 26 and then through the first comminution gap 25 . The comminuting elements 19, 20, 21, 22 work together in such a way that the material to be comminuted is comminuted or crushed. Through the third and fourth comminution elements 21, 22, the first and second comminution elements 19, 20 are relieved.

To change the rotary body 10, 11, 12, 13, for example in the case of maintenance or repairs, the comminution process is terminated. The locking elements 34 are moved from the locked position (cf. 3 ) into the release position (cf. 4 ) is adjusted and the securing elements 14, 38, 39 are released. A transport bridge (not shown), for example, can be mounted on the clamping element 9, for example on fastening means 48, so that the clamping element 9, starting from the clamping position (cf. 3 ) into the removal position (cf. 4 ) adjusted or moved and can be lifted off the base support 8. The clutches 17 are released so that the rotary bodies 10, 11, 12, 13 can be removed from the housing 2. For example, the worn comminution elements 19, 20, 21, 22 can be replaced or the rotating bodies 10, 11, 12, 13 with the worn comminuting elements 19, 20, 21, 22 can be replaced by other rotating bodies 10 , 11, 12, 13 are replaced. The clamping element 9 is then arranged again on the base support 8 and, starting from the removal position, is moved into the clamping position. The securing elements 14, 38, 39 are reattached and the locking elements 34 are moved from the release position to the locked position.

The wear and tear on the comminuting elements 19, 20, 21, 22 can be reduced by the third and fourth rotary bodies 12, 13, and the operating costs can therefore also be lowered. The arrangement of the rotary bodies 10, 11, 12, 13 ensures high throughput rates. With the at least four rotary bodies 10, 11, 12, 13 it is possible for even interfering material (not shown), ie material to be comminuted which is difficult to comminute, to be comminuted with the comminuting device 1. The fact that the rotary bodies 10, 11, 12, 13 are mounted on the front elements 4 between the base support 8 and the clamping element 9 enables the rotary bodies 10, 11, 12, 13 to be replaced more quickly, thereby reducing maintenance costs. Because the clamping element 9 can be adjusted along the guide 27 between the clamping position and the removal position, downtimes and maintenance costs can be further reduced. Locking elements 34 and securing elements 14, 38, 39 secure the clamping element 9 against unwanted displacement.

Reference List

1

crushing device

2

Housing

3

page element

4

forehead element

5

inner space

6

support unit

7

support element

8th

base carrier

9

clamping element

10

first body of revolution

11

second body of revolution

12

third body of revolution

13

fourth body of revolution

14

first security element

15

storage units

16

drive

17

coupling

18

damping element

19

first crushing element

20

second crushing element

21

third crushing element

22

fourth crushing element

23

main header

24

secondary cutting unit

25

first crushing gap

26

second crushing gap

27

guide

28

free area of the base support

29

first clamping sections

30

second clamping sections

31

clamping sections

32

groove

33

Adjusting spring

34

locking element

35

Recording

36

first recording section

37

second recording section

38

second security element

39

third security element

40

first wear element

41

second wear element

42

third wear element

43

first spacer

44

second spacer

45

indentations

46

centering element

47

drilling

48

fasteners

A

Distance between main level and secondary level

H

main level

N

secondary level

R1

first axis of rotation

R2

second axis of rotation

R3

third axis of rotation

R4

fourth axis of rotation

Claims (10)

Crushing device (1) for comminuting material to be comminuted, having - a housing (2) with two side elements (3) and two end elements (4) each having a base support (8) and a clamping element (9), - one on the housing (2) arranged, by a first drive (16) driven first rotary body (10) with a in a main plane (H) extending first axis of rotation (R1) and at least one first comminution element (19) and - a second rotary body (11) arranged parallel to the first rotary body (10) and driven by a second drive (16) with a second axis of rotation (R2) extending in the main plane (H). ) and at least one second comminution element (20) interacting with the first comminution element (19), - a third rotation body (12) arranged parallel to the first rotation body (10) and driven by a third drive (16) with a main level (H) arranged secondary level (N) extending third axis of rotation (R3) and at least one with the first comminution element (19) cooperating third comminution element (21), - one arranged parallel to the second rotary body (11) and driven by a fourth drive (16) driven fourth rotary body (13) with a secondary plane (N) extending fourth axis of rotation (R4) un d at least one fourth comminution element (22) cooperating with the second comminution element (20), characterized in that - the clamping element (9) along a guide (27) arranged on the end element (4) between one of the rotating bodies (10, 11, 12, 13) position-securing clamping position and a removal position releasing the rotary bodies (10, 11, 12, 13) for removal and - on the base support (8) and/or the clamping element (9) between the first and the second rotary body (10, 11 ) a centering element (46) which can be brought into engagement with the clamping element (9) and/or the base support (8) is arranged. crushing device claim 1 , characterized in that the clamping element (9) is adjustable perpendicularly to the main plane (H) between the clamping position and the removal position. Crushing device according to one of the preceding claims, characterized by a locking element (34) which is arranged on a front element (4) and fixes the clamping element (9) in the clamping position. Shredding device according to one or more of the preceding claims, characterized in that the locking element (34) in the clamped position is releasably arranged in a receptacle (35) which in the clamped position is formed by a first receptacle section (36) on the base support (8) and a second Receiving section (37) is formed on the clamping element (9). Crushing device according to one or more of the preceding claims, characterized in that the guide (27) has a groove (32) arranged on one of the base support (8) and clamping element (9) and a groove (32) on the other of base support (8) and clamping element ( 9) arranged guide element (33). Crushing device according to one or more of the preceding claims, characterized in that the clamping element (9) in the clamping position can be connected to the base support (8) by a securing element (14) extending perpendicularly to the main plane (H). Crushing device according to one or more of the preceding claims, characterized by a first wear element (40) arranged on the base support (8) and a second wear element (41) arranged on the clamping element (9). Crushing device according to one or more of the preceding claims, characterized by a first spacer element (43) arranged between the base support (8) and the first wear element (40) and a second spacer element (43) arranged between the clamping element (9) and the second wear element (42). 44). Crushing device according to one or more of the preceding claims, characterized by a damping element (18) arranged on one of the drives (16). Crushing device according to one or more of the preceding claims, characterized in that the end elements (4) are each arranged on a support element (7) arranged on a support unit (6).

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