EP2861348B1 - Jaw crusher - Google Patents

Jaw crusher Download PDF

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Publication number
EP2861348B1
EP2861348B1 EP13741660.8A EP13741660A EP2861348B1 EP 2861348 B1 EP2861348 B1 EP 2861348B1 EP 13741660 A EP13741660 A EP 13741660A EP 2861348 B1 EP2861348 B1 EP 2861348B1
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EP
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Prior art keywords
jaw
control
cylinder
jaw crusher
control unit
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German (de)
French (fr)
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EP2861348A1 (en
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Heinz-Peter Dappen
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C1/00—Crushing or disintegrating by reciprocating members
    • B02C1/02—Jaw crushers or pulverisers
    • B02C1/025—Jaw clearance or overload control

Definitions

  • the invention relates to a jaw crusher according to the preamble of patent claim 1.
  • the jaw crusher with a control device which includes a control unit acting on the piston-cylinder unit, with which a limited, constant pivoting range of the swivel jaw is adjustable within the range of the lower and upper swivel range limit values of the swivel jaw.
  • the control device includes a hinged on the pivoting jaw 2a control rod 14 with two adjustable stops 14a and 14b. These stops 14a and 14b are used for pivoting a locking lever 22, 22a, which acts on a coupling frame 27 which is displaceable parallel to a control cylinder and acts on both sides of a led out of the control cylinder 12 spool 12a, depending on the position of the spool 12a alternately the Actuate or relieve working cylinder with pressure medium.
  • a jaw crusher which has a stationary jaw and a pivoting jaw, which is pivotally mounted about an axis lying at its upper end.
  • a hydraulic piston-cylinder unit which is hinged at one end to the pivoting jaw and with its other end to the frame receiving the two crusher jaws.
  • the working stroke of the piston-cylinder unit should be adjustable, for example, in a range between 20 to 40 mm, without this document indicating, from which reference this area emanates.
  • FIG. 1 Jaw crusher shown contains a crusher housing 1, a stationary crusher jaw 2, a pivotable about the axis 4 swivel jaw 3 and as a drive member pivotable about an axis 5.1 hydraulic cylinder 5, the piston rod is 5.2 hinged to the swivel jaw 3 in the region of the axis 5.1.
  • the hydraulic cylinder 5 is provided with a bearing eye 5.4 assigned to the axle 5.3.
  • On the piston rod 5.2 a 5.3 associated bearing eye 5.5 is attached.
  • a control device with which the Brechspaltweite between the two breaker jaws 2 and 3 is adjustable between upper and lower limits, includes a control unit 6 and a control valve unit 7, which are preferably attached directly to the hydraulic cylinder 5.
  • control unit 6 includes a first cylinder housing 8 and a coaxially adjoining second cylinder housing 9, whose inner diameter is preferably greater than the inner diameter of the cylinder housing 8.
  • a spool 10 is mounted sealingly displaceable.
  • the spool 10 is provided with an axially extending inner bore 10.1, which has an inner ring gear at least over part of its length. In this inner ring gear engages an outer ring gear of a pin 11 which can be set in rotation by means of an outside of the cylinder housing 8 adjusting wheel 12.
  • the spool 10 is provided with a circumferential groove 10.2 and forms part of a 4/2-way valve 16 with the four terminals Y, Y 1 and X, X 1 , see also FIG. 6 in such a way that the circumferential groove 10.2 can oscillate in opposition to the terminals Y, Y 1 or X, X 1 .
  • spool 10 coaxially connects to a threaded spindle 13, which is guided in a nut 14.
  • This nut 14 is fixed coaxially to a control rod 15 which is displaceably mounted in the second cylinder housing 9 and which is provided with an inner bore 15.1 which extends over part of its length and adjoins the nut 14.
  • control rod 15 is by means of in the FIGS. 2, 3 and 6 shown rocker 17 rigidly connected to the free end of the piston rod 5.2.
  • control position with only minimal in the rest position from the cylinder 9 extended control rod 15 corresponds during each stroke of a maximum crushing gap width.
  • the operation and operation of the jaw crusher according to the invention is based on the hydraulic circuit diagram of FIG. 6 described.
  • FIG. 6 schematically illustrated hydraulic cylinder 5 is connected via the one part of the control valve unit 7 forming 4/2-way valve 20 to the hydraulic ports P and T.
  • the hydraulic cylinder 5 is acted upon by the hydraulic port P via line A in such a way with hydraulic fluid that the working piston 5.5 extends with the piston rod 5.2 in the direction of arrow f 1 and performs its stroke to the swing jaw third towards the stationary crusher jaw 2.
  • the lying below the working piston 5.5 space of the hydraulic cylinder 5 is depressurized via the line B in the direction of the hydraulic port T.
  • the 4/2-way valve 20 is moved to its second valve position to pressurize the space located below the working piston 5.5 of the hydraulic cylinder 5 via line B with hydraulic fluid and the working piston 5.5 in Move direction of the arrow f 2 and thus retract the piston rod 5.2 in the hydraulic cylinder 5.
  • the hydraulic fluid located above the working piston 5.5 is conveyed back through the line A in the direction of the hydraulic connection P.
  • the 4/2-way valve 20 is controlled between its two valve positions of a part of the control unit 6 forming 4/2-way valve 16, via the dashed lines shown control lines X, X 1 on the one hand and Y, Y 1 on the other hand to the 4/2 -way valve 20 is connected.
  • the designations X, X 1 and Y, Y 1 indicate that the respective control lines are alternately flowed through in opposite directions of hydraulic fluid.
  • the spool of the 4/2-way valve 20 is adjusted accordingly, so that the hydraulic cylinder 5 is alternately acted upon in opposite directions with hydraulic fluid, such that the working piston 5.5 and the Piston rod 5.2 either in the direction of arrow f 1 performs the stroke or retracts in the direction of arrow f 2 again in the hydraulic cylinder 5.
  • the means of the rocker 17 rigidly connected to the piston rod 5.2 control rod 15 of the control unit 6 follows the movement of the piston rod 5.6.
  • the movement of the control rod 15 following spool 10 of the 4/2-way valve 16 is reciprocated between its two either the terminals X, X 1 or the terminals Y, Y 1 opposite end positions, so that by the control lines shown in dashed lines the hydraulic cylinder 5 associated 4/2-way valve 20 of the control unit 6 is adjusted accordingly and thereby the flow of hydraulic fluid is controlled in or out of the hydraulic cylinder 5.
  • the Brechspaltweite can be adjusted between a through FIG. 4 represented minimum value and one through FIG. 5 represented maximum value, of course intermediate positions between the two extreme values according to the FIGS. 4 and 5 possible are.
  • Check valves 23 and 24 located in the area of the control unit 16 are provided to prevent overloading of the control line system.
  • Line branches XA and XB are used to connect the 4/2-way valve 16 to the lines A and B.
  • a pressure limiting valve 22 is provided as a overload-securing element of the line branch B.
  • the line T 1 connecting the 4/2-way valve 16 to the hydraulic connection T serves to return any leakage hydraulic fluid occurring in the region of the 4/2-way valve 16.
  • the possibility is created of using e.g.
  • the maximum possible stroke length of the piston-cylinder unit of 100 mm is to set the actual working or breaking stroke to specific ranges within the maximum possible stroke length.
  • a working or breaking stroke of 40 mm can be set within the range of the maximum possible Verstellhubin of 100 mm.
  • the oscillating lifting movement, i. H. the working stroke of the working piston is set in the range between 60 mm and 100 mm.
  • FIGS. 6 and 7 serve to explain the work or functioning of the in the DE 44 00 922 A1 described jaw crusher compared to the jaw crusher 1 according to the invention.
  • the crushing gap width required for this must be set to a maximum value of 100 mm and the working piston must have a working or a breaking stroke of 100 mm.
  • the working stroke length must also be set to corresponding values of 40 mm, 70 mm or 100 mm in order to obtain a grain size range of ⁇ 40 mm or ⁇ 70 mm or ⁇ 100 mm.
  • the working stroke must be set to 100 mm in order to achieve a product with a grain size range ⁇ 100 mm, sufficient in the jaw crusher invention, a working stroke of eg 40 mm, which is between the limits of 60 and 100 mm To achieve a maximum size of the Brecherspaltweite and thus obtain a crushed product in the grain size range ⁇ 100 mm.

Description

Die Erfindung betrifft einen Backenbrecher gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a jaw crusher according to the preamble of patent claim 1.

Aus der FR 2 598 939 A1 sowie der DE 1 129 040 B ist es bekannt, den Backenbrecher mit einer Regeleinrichtung auszustatten, die eine auf die Kolben-Zylinder-Einheit einwirkende Steuereinheit enthält, mit der ein begrenzter, gleichbleibender Schwenkbereich der Schwenkbacke innerhalb des Bereichs der unteren und oberen Schwenkbereichsgrenzwerte der Schwenkbacke einstellbar ist.From the FR 2 598 939 A1 as well as the DE 1 129 040 B It is known to provide the jaw crusher with a control device which includes a control unit acting on the piston-cylinder unit, with which a limited, constant pivoting range of the swivel jaw is adjustable within the range of the lower and upper swivel range limit values of the swivel jaw.

Der in der FR 2 598 939 A1 beschriebene Backenbrecher enthält gemäß Figur 3 dieser Druckschrift eine Regeleinrichtung mit folgenden Merkmalen:

  • an dem Hydraulikzylinder 17 ist eine Gewindestange 81 befestigt, die parallel zur Bewegungsrichtung der Kolbenstange 19 des Arbeitskolbens 18 verläuft;
  • entlang der Gewindespindel 81 ist ein Träger 80 zwischen zwei Positionen RA und RB verstellbar, wobei der maximale Abstand zwischen RA und RB dem maximalen Hub des Arbeitskolbens 18 bzw. der Kolbenstange 19 entspricht;
  • der Träger 18 enthält einen stationär daran angebrachten Anschlag Ra und einen relativ zu dem Anschlag Ra verstellbaren Anschlag Rb, wobei der einstellbare Abstand zwischen Ra und Rb dem erwünschten Arbeitshub des Kolbens bzw. der Kolbenstange entspricht, wobei der wirksame Arbeitshub zwischen Ra und Rb durch Verstellen des Trägers 80 entlang der Gewindespindel 81 innerhalb der Grenzen RA-RB festgelegt werden kann;
  • auf der Kolbenstange 19 ist ein Anschlag RP angebracht, der beim Auftreffen auf die Anschläge Ra und Rb elektrische Signale an eine Steuereinheit liefert, derart, dass die Bewegungsrichtung der Kolbenstange 15 umgesteuert wird.
The Indian FR 2 598 939 A1 described jaw crusher contains according to FIG. 3 This document a control device with the following features:
  • on the hydraulic cylinder 17, a threaded rod 81 is fixed, which is parallel to the direction of movement of the piston rod 19 of the working piston 18;
  • along the threaded spindle 81, a carrier 80 is adjustable between two positions RA and RB, wherein the maximum distance between RA and RB corresponds to the maximum stroke of the working piston 18 and the piston rod 19;
  • the support 18 includes a stationary stop Ra and a stop Rb adjustable relative to the stop Ra, the adjustable distance between Ra and Rb corresponding to the desired working stroke of the piston or piston rod, the effective working stroke between Ra and Rb being adjusted the carrier 80 can be fixed along the threaded spindle 81 within the limits RA-RB;
  • On the piston rod 19, a stop RP is mounted, which supplies electrical signals to a control unit when hitting the stops Ra and Rb, such that the direction of movement of the piston rod 15 is reversed.

Bei einem in der DE 1 129 040 B beschriebenen Backenbrecher enthält die Regeleinrichtung eine an der Schwenkbacke 2a angelenkte Steuerstange 14 mit zwei verstellbaren Anschlägen 14a und 14b. Diese Anschläge 14a und 14b dienen zum Verschwenken eines Rasthebels 22, 22a, der auf einen Kupplungsrahmen 27 einwirkt, welcher parallel zu einem Steuerzylinder verschiebbar ist und beidseitig an einem aus dem Steuerzylinder 12 herausgeführten Steuerschieber 12a angreift, um je nach Stellung des Steuerschiebers 12a abwechselnd den Arbeitszylinder mit Druckmittel zu beaufschlagen oder zu entlasten.At one in the DE 1 129 040 B described jaw crusher, the control device includes a hinged on the pivoting jaw 2a control rod 14 with two adjustable stops 14a and 14b. These stops 14a and 14b are used for pivoting a locking lever 22, 22a, which acts on a coupling frame 27 which is displaceable parallel to a control cylinder and acts on both sides of a led out of the control cylinder 12 spool 12a, depending on the position of the spool 12a alternately the Actuate or relieve working cylinder with pressure medium.

In der DE 94 01 617 U 1 ist ein Backenbrecher beschrieben, der eine stationäre Backe und eine Schwenkbacke aufweist, die um eine an ihrem oberen Ende liegende Achse schwenkbar gelagert ist. Zum Antrieb der Schwenkbacke greift an dieser eine hydraulische Kolben-Zylinder-Einheit an, die mit ihrem einen Ende an der Schwenkbacke und mit ihrem anderen Ende an dem die beiden Brecherbacken aufnehmenden Gestell angelenkt ist. Der Arbeitshub der Kolben-Zylinder-Einheit soll beispielsweise in einem Bereich zwischen 20 bis 40 mm einstellbar sein, ohne dass diese Druckschrift angibt, von welcher Bezugsgröße dieser Bereich ausgeht.In the DE 94 01 617 U 1, a jaw crusher is described, which has a stationary jaw and a pivoting jaw, which is pivotally mounted about an axis lying at its upper end. To drive the pivoting jaw engages this to a hydraulic piston-cylinder unit, which is hinged at one end to the pivoting jaw and with its other end to the frame receiving the two crusher jaws. The working stroke of the piston-cylinder unit should be adjustable, for example, in a range between 20 to 40 mm, without this document indicating, from which reference this area emanates.

In der DE 44 00 922 A1 ist ein Backenbrecher mit einer Schwenkbacke beschrieben, die unter Zwischenschaltung eines Kniehebelgelenks von einer hydraulischen Kolben-Zylinder-Einheit um eine im Bereich des oberen Endes der Schwenkbacke befindlichen Achse verschwenkbar ist. Zum Einstellen der Korngröße des zerkleinerten Gutes ist vorgesehen, zur Veränderung der Brechspaltweite die Länge des Arbeitshubes der hydraulischen Kolben-Zylinder-Einheit zu verändern, was jedoch nicht während des Betriebs des Backenbrechers möglich ist.
Ein in der US 1,863,492 beschriebener Backenbrecher enthält eine stationäre Brecherbacke und eine Schwenkbacke, die um eine in zwei Positionen fixierbare Schwenkachse verschwenkbar ist. Der Antrieb der Schwenkbacke erfolgt mittels eines über einen Riementrieb antreibbaren Schwungrades, der einen exzentrisch gelagerten Antriebsblock zu einer in Richtung der Schwenkbacke oszillierenden Bewegung antreibt. Der Antriebsblock ist in vier Stellungen positionierbar und ist zur Veränderung der Brechspaltweite mit vier unterschiedlich tiefen Nuten ausgerüstet, in die eine auf die Schwenkbacke einwirkende Kontaktstange einsetzbar ist. Eine Veränderung der Brechspaltweite ist nur bei stillstehendem Backenbrecher möglich. Vor der Wieder-Inbetriebnahme des Backenbrechers muss der Brechraum zwischen den Backen entleert werden, was nur von oben her möglich ist. Dieses gilt auch im Falle eines Materialstaus zwischen den beiden Backen, da ohne ein solches Entleeren das Schwungrad nicht in Drehung versetzt werden und damit auch nicht seine Funktion als Energiespeicher ausüben kann. Der erfindungsgemäße Backenbrecher ist durch den Anspruch 1 definiert. Bevorzugte Ausführungsformen sind durch die abhängigen Ansprüche 2-7 definiert. Die Vorteile der erfindungsgemäßen Ausgestaltung eines Backenbrechers werden im Folgenden noch anhand der Arbeits- und Betriebsweise dieses Backenbrechers beschrieben. Die Erfindung wird im Folgenden anhand der Zeichnung näher beschrieben:

  • Figur 1 zeigt in schematisierter Darstellung teilweise im Schnitt einen Backenbrecher;
  • Figur 2 zeigt in isometrischer Darstellung ein einen Arbeitszylinder, eine Steuereinheit und eine Steuerventileinheit enthaltendes Aggregat des erfindungsgemäßen Backenbrechers;
  • Figur 3 ist eine Draufsicht auf das in Figur 2 dargestellte Aggregat;
  • Figur 4 zeigt in vergrößerter Darstellung eine Schnittansicht der Steuereinheit in einer ersten Steuerposition;
  • Figur 5 zeigt eine Schnittansicht der Steuereinheit in einer zweiten Steuerposition;
  • Figur 6 zeigt den Hydraulik-Schaltplan des erfindungsgemäßen Backenbrechers;
  • Figur 7 ist ein Diagramm, zur Darstellung der Relation zwischen dem maximal möglichem Verstellhub und dem Arbeitshub des bekannten Backenbrechers gemäß DE 44 00 922 A1 ;
  • Figur 8 ist ein Diagramm, das bei dem erfindungsgemäßen Backenbrecher die Relation zwischen dem maximal möglichen Verstellhub und dem tatsächlichen Arbeits- bzw. Brechhub zeigt.
In the DE 44 00 922 A1 is a jaw crusher described with a pivoting jaw, which is pivotable about a located in the region of the upper end of the pivoting jaw axis with the interposition of a toggle joint of a hydraulic piston-cylinder unit. For adjusting the grain size of the comminuted material is provided to change the Brechspaltweite the length of the working stroke of the hydraulic piston-cylinder unit to change, but this is not possible during operation of the jaw crusher.
An Indian US 1,863,492 described jaw crusher includes a stationary crusher jaw and a pivoting jaw which is pivotable about a fixable in two positions pivot axis. The drive of the swivel jaw takes place by means of a flywheel driven via a belt drive, which drives an eccentrically mounted drive block to an oscillating movement in the direction of the swivel jaw. The drive block can be positioned in four positions and is equipped to change the crushing gap width with four different deep grooves into which a contact rod acting on the swivel jaw can be inserted. A change in the crushing gap width is possible only when the jaw crusher is stationary. Before restarting the jaw crusher, the crushing space between the jaws must be emptied, which is only possible from above. This also applies in the case of a material jam between the two jaws, since without such emptying the flywheel can not be set in rotation and therefore can not perform its function as an energy store. The jaw crusher according to the invention is defined by claim 1. Preferred embodiments are defined by the dependent claims 2-7. The advantages of the embodiment of a jaw crusher according to the invention are described below on the basis of the working and operating mode of this jaw crusher. The invention will be described in more detail below with reference to the drawing:
  • FIG. 1 shows a schematic representation partially in section a jaw crusher;
  • FIG. 2 shows an isometric view of a working cylinder, a control unit and a control valve unit containing unit of the jaw crusher according to the invention;
  • FIG. 3 is a top view of the in FIG. 2 illustrated unit;
  • FIG. 4 shows in enlarged scale a sectional view of the control unit in a first control position;
  • FIG. 5 shows a sectional view of the control unit in a second control position;
  • FIG. 6 shows the hydraulic circuit diagram of the jaw crusher according to the invention;
  • FIG. 7 is a diagram for representing the relation between the maximum possible Verstellhub and the working stroke of the known jaw crusher according to DE 44 00 922 A1 ;
  • FIG. 8 is a diagram showing the relation between the maximum possible Verstellhub and the actual working or Brechhub in the jaw crusher according to the invention.

Der in Figur 1 dargestellte Backenbrecher enthält ein Brechergehäuse 1, eine stationäre Brecherbacke 2, eine um die Achse 4 schwenkbare Schwenkbacke 3 und als Antriebsorgan einen um eine Achse 5.1 verschwenkbaren Hydraulikzylinder 5, dessen Kolbenstange 5.2 an der Schwenkbacke 3 im Bereich der Achse 5.1 angelenkt ist. Gemäß den Figuren 2 und 3 ist der Hydraulikzylinder 5 mit einem der Achse 5.3 zugeordneten Lagerauge 5.4 versehen. An der Kolbenstange 5.2 ist ein der Achse 5.3 zugeordnetes Lagerauge 5.5 angebracht.The in FIG. 1 Jaw crusher shown contains a crusher housing 1, a stationary crusher jaw 2, a pivotable about the axis 4 swivel jaw 3 and as a drive member pivotable about an axis 5.1 hydraulic cylinder 5, the piston rod is 5.2 hinged to the swivel jaw 3 in the region of the axis 5.1. According to the FIGS. 2 and 3 the hydraulic cylinder 5 is provided with a bearing eye 5.4 assigned to the axle 5.3. On the piston rod 5.2 a 5.3 associated bearing eye 5.5 is attached.

Eine Regeleinrichtung, mit der die Brechspaltweite zwischen den beiden Brecherbacken 2 und 3 zwischen oberen und unteren Grenzwerten einstellbar ist, enthält eine Steuereinheit 6 und eine Steuerventileinheit 7, die vorzugsweise direkt an dem Hydraulikzylinder 5 befestigt sind.A control device, with which the Brechspaltweite between the two breaker jaws 2 and 3 is adjustable between upper and lower limits, includes a control unit 6 and a control valve unit 7, which are preferably attached directly to the hydraulic cylinder 5.

Die in den Figuren 4 und 5 in zwei unterschiedlichen Arbeitsstellungen dargestellte Steuereinheit 6 enthält ein erstes Zylindergehäuse 8 und ein koaxial daran anschließendes zweites Zylindergehäuse 9, dessen Innendurchmesser vorzugsweise größer ist als der Innendurchmesser des Zylindergehäuses 8. In dem ersten Zylindergehäuse 8 ist ein Steuerschieber 10 abdichtend verschiebbar gelagert. Der Steuerschieber 10 ist mit einer axial verlaufenden Innenbohrung 10.1 versehen, die zumindest über einen Teil ihrer Länge einen Innenzahnkranz aufweist. In diesen Innenzahnkranz greift ein Außenzahnkranz eines Stiftes 11, der mittels eines außerhalb des Zylindergehäuses 8 befindlichen Stellrades 12 in Drehung versetzbar ist.The in the FIGS. 4 and 5 shown in two different working positions control unit 6 includes a first cylinder housing 8 and a coaxially adjoining second cylinder housing 9, whose inner diameter is preferably greater than the inner diameter of the cylinder housing 8. In the first cylinder housing 8, a spool 10 is mounted sealingly displaceable. The spool 10 is provided with an axially extending inner bore 10.1, which has an inner ring gear at least over part of its length. In this inner ring gear engages an outer ring gear of a pin 11 which can be set in rotation by means of an outside of the cylinder housing 8 adjusting wheel 12.

Der Steuerschieber 10 ist mit einer Umfangsnut 10.2 versehen und bildet einen Teil eines 4/2-Wegeventils 16 mit den vier Anschlüssen Y, Y1 sowie X, X1 ist, siehe auch Figur 6, derart, dass die Umfangsnut 10.2 oszillierend den Anschlüssen Y, Y1 oder X, X1 gegenüberliegen kann.The spool 10 is provided with a circumferential groove 10.2 and forms part of a 4/2-way valve 16 with the four terminals Y, Y 1 and X, X 1 , see also FIG. 6 in such a way that the circumferential groove 10.2 can oscillate in opposition to the terminals Y, Y 1 or X, X 1 .

An den Steuerschieber 10 schließt koaxial zu diesem eine Gewindespindel 13 an, die in einer Mutter 14 geführt ist. Diese Mutter 14 ist koaxial an einer in dem zweiten Zylindergehäuse 9 verschiebbar gelagerten Steuerstange 15 befestigt, die mit einer sich über einen Teil ihrer Länge erstreckenden, an die Mutter 14 anschließenden Innenbohrung 15.1 versehen ist.To the spool 10 coaxially connects to a threaded spindle 13, which is guided in a nut 14. This nut 14 is fixed coaxially to a control rod 15 which is displaceably mounted in the second cylinder housing 9 and which is provided with an inner bore 15.1 which extends over part of its length and adjoins the nut 14.

Auf das freie Ende der Gewindespindel 13 ist ein gegen eine Stirnseite der Mutter 14 zur Anlage bringbarer Sicherungsring 13.1 aufgeschoben, um ein Herausdrehen der Spindel 13 aus der Mutter 14 zu verhindern.On the free end of the threaded spindle 13 against a front side of the nut 14 can be brought to bear locking ring 13.1 to prevent unscrewing the spindle 13 from the nut 14.

Durch Drehen des Stellrades 12 kann die Steuerstange 15 zwischen den beiden in den Figuren 4 und 5 dargestellten Extrempositionen aus dem zweiten Zylindergehäuse 9 ausgefahren bzw. in diesen eingezogen werden.By turning the adjusting wheel 12, the control rod 15 between the two in the FIGS. 4 and 5 extended extreme positions are extended from the second cylinder housing 9 and fed into this.

Das freie Ende der Steuerstange 15 ist mittels der in den Figuren 2, 3 und 6 dargestellten Schwinge 17 starr mit dem freien Ende der Kolbenstange 5.2 verbunden.The free end of the control rod 15 is by means of in the FIGS. 2, 3 and 6 shown rocker 17 rigidly connected to the free end of the piston rod 5.2.

Die in Figur 4 dargestellte Position der Steuerstange 15, die mittels der Schwinge 17 mit der Kolbenstange 5.2 des Hydraulikzylinders 5 starr verbunden ist, entspricht in der Ruhestellung bei maximal aus dem Zylinder 9 ausgefahrener Steuerstange 15 einer minimalen Brechspaltweite während jedes Arbeitshubes.In the FIG. 4 shown position of the control rod 15, which is rigidly connected by means of the rocker 17 with the piston rod 5.2 of the hydraulic cylinder 5, corresponds in the rest position at maximum extended from the cylinder 9 control rod 15 a minimum crushing gap width during each stroke.

Die in Figur 5 dargestellte Steuerposition mit in der Ruhestellung nur minimal aus dem Zylinder 9 ausgefahrener Steuerstange 15 entspricht während jedes Arbeitshubes einer maximalen Brechspaltweite.In the FIG. 5 illustrated control position with only minimal in the rest position from the cylinder 9 extended control rod 15 corresponds during each stroke of a maximum crushing gap width.

Die Arbeits- und Funktionsweise des erfindungsgemäßen Backenbrechers wird anhand des Hydraulikschaltplans von Figur 6 beschrieben.The operation and operation of the jaw crusher according to the invention is based on the hydraulic circuit diagram of FIG. 6 described.

Der in Figur 6 schematisiert dargestellte Hydraulikzylinder 5 ist über das einen Teil der Steuerventileinheit 7 bildende 4/2-Wegeventil 20 an die Hydraulikanschlüsse P und T angeschlossen. Bei der in Figur 6 dargestellten Position des 4/2-Wegeventils 20 wird der Hydraulikzylinder 5 von dem Hydraulikanschluss P über die Leitung A derart mit Hydraulikflüssigkeit beaufschlagt, dass der Arbeitskolben 5.5 mit der Kolbenstange 5.2 in Richtung des Pfeiles f1 ausfährt und seinen Arbeitshub ausführt, um die Schwenkbacke 3 in Richtung der stationären Brecherbacke 2 zu drücken. Dabei wird der unterhalb des Arbeitskolbens 5.5 liegende Raum des Hydraulikzylinders 5 über die Leitung B in Richtung des Hydraulikanschlusses T druckentlastet. Um den Arbeitskolben 5.5 wieder in seine Ausgangsposition zurückstellen zu können, wird das 4/2-Wegeventil 20 in seine zweite Ventilstellung verstellt, um den unterhalb des Arbeitskolbens 5.5 befindlichen Raum des Hydraulikzylinders 5 über die Leitung B mit Hydraulikflüssigkeit zu beaufschlagen und den Arbeitskolben 5.5 in Richtung des Pfeiles f2 zu bewegen und damit die Kolbenstange 5.2 in den Hydraulikzylinder 5 einzufahren. Dabei wird die oberhalb des Arbeitskolbens 5.5 befindliche Hydraulikflüssigkeit durch die Leitung A in Richtung des Hydraulikanschlusses P zurück gefördert.The in FIG. 6 schematically illustrated hydraulic cylinder 5 is connected via the one part of the control valve unit 7 forming 4/2-way valve 20 to the hydraulic ports P and T. At the in FIG. 6 shown position of the 4/2-way valve 20, the hydraulic cylinder 5 is acted upon by the hydraulic port P via line A in such a way with hydraulic fluid that the working piston 5.5 extends with the piston rod 5.2 in the direction of arrow f 1 and performs its stroke to the swing jaw third towards the stationary crusher jaw 2. In this case, the lying below the working piston 5.5 space of the hydraulic cylinder 5 is depressurized via the line B in the direction of the hydraulic port T. In order to return the working piston 5.5 back to its original position, the 4/2-way valve 20 is moved to its second valve position to pressurize the space located below the working piston 5.5 of the hydraulic cylinder 5 via line B with hydraulic fluid and the working piston 5.5 in Move direction of the arrow f 2 and thus retract the piston rod 5.2 in the hydraulic cylinder 5. In this case, the hydraulic fluid located above the working piston 5.5 is conveyed back through the line A in the direction of the hydraulic connection P.

In dem Hydraulikschaltplan ist dieses abwechselnde Durchströmen der Hydraulikflüssigkeit durch die in voll ausgezogenen Linien dargestellten Hydraulikleitungen in entgegengesetzten Richtungen durch die Bezeichnungen A, A1 bzw. B, B1 bzw. T, T1 und P, P1 wiedergegeben.In the hydraulic circuit diagram, this alternate flow of hydraulic fluid through the hydraulic lines shown in solid lines in opposite directions by the designations A, A1 and B, B1 and T, T1 and P, P1 reproduced.

Das 4/2-Wegeventil 20 wird zwischen seinen beiden Ventilstellungen gesteuert von einem einen Teil der Steuereinheit 6 bildendes 4/2-Wegeventil 16, das über die gestrichelt dargestellten Steuerleitungen X, X1 einerseits und Y, Y1 andererseits an das 4/2-Wegeventil 20 angeschlossen ist. Die Bezeichnungen X, X1 und Y, Y1 deuten an, dass die entsprechenden Steuerleitungen abwechselnd in entgegengesetzten Richtungen von Hydraulikflüssigkeit durchströmt werden.The 4/2-way valve 20 is controlled between its two valve positions of a part of the control unit 6 forming 4/2-way valve 16, via the dashed lines shown control lines X, X 1 on the one hand and Y, Y 1 on the other hand to the 4/2 -way valve 20 is connected. The designations X, X 1 and Y, Y 1 indicate that the respective control lines are alternately flowed through in opposite directions of hydraulic fluid.

In Abhängigkeit von der Stellung des Steuerschiebers 10 des 4/2-Wegeventils 16 wird der Steuerschieber des 4/2-Wegeventils 20 entsprechend verstellt, so dass der Hydraulikzylinder 5 abwechselnd in entgegengesetzten Richtungen mit Hydraulikflüssigkeit beaufschlagt wird, derart, dass der Arbeitskolben 5.5 und die Kolbenstange 5.2 entweder in Richtung des Pfeiles f1 den Arbeitshub ausführt oder in Richtung des Pfeiles f2 wieder in den Hydraulikzylinder 5 einfährt.Depending on the position of the spool 10 of the 4/2-way valve 16, the spool of the 4/2-way valve 20 is adjusted accordingly, so that the hydraulic cylinder 5 is alternately acted upon in opposite directions with hydraulic fluid, such that the working piston 5.5 and the Piston rod 5.2 either in the direction of arrow f 1 performs the stroke or retracts in the direction of arrow f 2 again in the hydraulic cylinder 5.

Die mittels der Schwinge 17 starr mit der Kolbenstange 5.2 verbundene Steuerstange 15 der Steuereinheit 6 folgt der Bewegung der Kolbenstange 5.6. Der der Bewegung der Steuerstange 15 folgende Steuerschieber 10 des 4/2-Wegeventils 16 wird dabei zwischen seinen beiden entweder den Anschlüssen X, X1 oder den Anschlüssen Y, Y1 gegenüberliegenden Endstellungen hin- und herbewegt, so dass durch die gestrichelt dargestellten Steuerleitungen das dem Hydraulikzylinder 5 zugeordnete 4/2-Wegeventil 20 der Steuereinheit 6 entsprechend verstellt wird und dadurch der Fluss der Hydraulikflüssigkeit in den oder aus dem Hydraulikzylinder 5 gesteuert wird.The means of the rocker 17 rigidly connected to the piston rod 5.2 control rod 15 of the control unit 6 follows the movement of the piston rod 5.6. The movement of the control rod 15 following spool 10 of the 4/2-way valve 16 is reciprocated between its two either the terminals X, X 1 or the terminals Y, Y 1 opposite end positions, so that by the control lines shown in dashed lines the hydraulic cylinder 5 associated 4/2-way valve 20 of the control unit 6 is adjusted accordingly and thereby the flow of hydraulic fluid is controlled in or out of the hydraulic cylinder 5.

In Abhängigkeit davon, wie weit die Steuerstange 15 der Steuereinheit 6 durch Betätigung des Stellrades 12 aus dem zweiten Zylindergehäuse 9 ausgefahren worden ist, kann die Brechspaltweite eingestellt werden zwischen einem durch Figur 4 repräsentierten minimalen Wert und einem durch Figur 5 repräsentierten maximalen Wert, wobei natürlich Zwischenstellungen zwischen den beiden Extremwerten gemäß den Figuren 4 und 5 möglich sind.Depending on how far the control rod 15 of the control unit 6 has been extended by actuation of the adjusting wheel 12 from the second cylinder housing 9, the Brechspaltweite can be adjusted between a through FIG. 4 represented minimum value and one through FIG. 5 represented maximum value, of course intermediate positions between the two extreme values according to the FIGS. 4 and 5 possible are.

Im Bereich der Steuereinheit 16 befindliche Rückschlagventile 23 und 24 sind zur Verhinderung von Überlastungen des Steuerleitungssystems vorgesehen.Check valves 23 and 24 located in the area of the control unit 16 are provided to prevent overloading of the control line system.

Leitungszweige XA und XB dienen zum Anschluss des 4/2-Wegeventils 16 an die Leitungen A bzw. B.Line branches XA and XB are used to connect the 4/2-way valve 16 to the lines A and B.

Ein Druckbegrenzungsventil 22 ist als Überlastungs-Sicherungselement des Leitungszweiges B vorgesehen.A pressure limiting valve 22 is provided as a overload-securing element of the line branch B.

Die das 4/2-Wegeventil 16 mit dem Hydraulikanschluss T verbindende Leitung T1 dient zur Rückförderung von eventuell auftretender Leckage-Hydraulikflüssigkeit im Bereich des 4/2-Wegeventils 16.The line T 1 connecting the 4/2-way valve 16 to the hydraulic connection T serves to return any leakage hydraulic fluid occurring in the region of the 4/2-way valve 16.

Bei dem bekannten Backenbrecher gemäß DE 44 00 922 A1 entspricht die jeweilige Brechspaltweite der einstellbaren Länge des Arbeitshubs der hydraulischen Kolben-Zylinder-Einheit, wobei ein maximal möglicher Verstellhub von z.B. 100 mm einem Arbeitshub der Kolbenstange von ebenfalls 100 mm entspricht, um mit dem Brecher ein Produkt mit einer Korngröße zwischen < Null mm bis 100 mm zu erhalten.In the known jaw crusher according to DE 44 00 922 A1 corresponds to the respective Brechspaltweite the adjustable length of the working stroke of the hydraulic piston-cylinder unit, wherein a maximum possible Verstellhub of eg 100 mm corresponds to a working stroke of the piston rod of also 100 mm, to the crusher a product with a grain size between <zero mm to 100 mm to obtain.

Mit der vorliegenden Erfindung ist im Gegensatz dazu die Möglichkeit geschaffen, bei einer z.B. maximal möglichen Verstellhublänge der Kolben-Zylinder-Einheit von 100 mm den tatsächlichen Arbeits- bzw. Brechhub auf bestimmte Bereiche innerhalb der maximal möglichen Verstellhublänge einzustellen. Auf diese Weise kann beispielsweise ein Arbeits- bzw. Brechhub von 40 mm innerhalb des Bereichs der maximal möglichen Verstellhublänge von 100 mm eingestellt werden. Um beispielsweise bei einer maximal möglichen Brechspaltweite eine Körnung des zerkleinerten Produktes im Bereich zwischen < Null mm bis 100 mm zu erhalten, wird die oszillierende Hubbewegung, d. h. der Arbeitshub des Arbeitskolbens in dem Bereich zwischen 60 mm und 100 mm eingestellt. Damit wird erreicht, dass der Kolben bei jedem Arbeitszyklus jeweils nur um 40 mm ausgefahren und entsprechend wieder eingefahren wird, während bei dem bekannten Backenbrecher der Kolben jeweils um 100 mm aus dem Zylinder ausfahren bzw. einfahren muss, um ein Produkt gleicher Körnung im Bereich zwischen < Null mm bis 100 mm zu erhalten.By contrast, with the present invention, the possibility is created of using e.g. The maximum possible stroke length of the piston-cylinder unit of 100 mm is to set the actual working or breaking stroke to specific ranges within the maximum possible stroke length. In this way, for example, a working or breaking stroke of 40 mm can be set within the range of the maximum possible Verstellhublänge of 100 mm. In order, for example, to obtain a grain size of the comminuted product in the range between <0 to 100 mm at a maximum possible crushing gap width, the oscillating lifting movement, i. H. the working stroke of the working piston is set in the range between 60 mm and 100 mm. It is thus achieved that the piston is extended and retracted only by 40 mm with each work cycle, whereas in the case of the known jaw crusher the piston must each extend or retract by 100 mm from the cylinder to produce a product of the same grain size in the range between <Zero mm to obtain 100 mm.

Die Diagramme gemäß den Figuren 6 und 7 dienen zur Erläuterung der Arbeits- bzw. Funktionsweise des in der DE 44 00 922 A1 beschriebenen Backenbrechers im Vergleich zu dem erfindungsgemäßen Backenbrecher 1.The diagrams according to the FIGS. 6 and 7 serve to explain the work or functioning of the in the DE 44 00 922 A1 described jaw crusher compared to the jaw crusher 1 according to the invention.

Um mit dem bekannten Backenbrecher eine Korngröße des zerkleinerten Produktes zwischen < Null mm und 100 mm zu erhalten, muss die dazu erforderliche Brechspaltweite auf einen Maximalwert von 100 mm eingestellt werden und der Arbeitskolben muss einen Arbeits- bzw. Brechhub von 100 mm ausführen. Für jede Brechspaltweite von z.B. 40 mm oder 70 mm oder 100 mm muss auch die Arbeitshublänge auf entsprechende Werte von 40 mm, 70 mm oder 100 mm eingestellt werden, um einen Korngrößenbereich von ≤ 40 mm oder ≤ 70 mm oder ≤ 100 mm erhalten.In order to obtain a grain size of the shredded product between <zero mm and 100 mm with the known jaw crusher, the crushing gap width required for this must be set to a maximum value of 100 mm and the working piston must have a working or a breaking stroke of 100 mm. For each crushing gap width of eg 40 mm or 70 mm or 100 mm, the working stroke length must also be set to corresponding values of 40 mm, 70 mm or 100 mm in order to obtain a grain size range of ≤ 40 mm or ≤ 70 mm or ≤ 100 mm.

Wenn man bei dem erfindungsgemäßen Backenbrecher ebenfalls einen maximal möglichen Verstellhub und damit eine maximal mögliche Brechspaltweite von 100 mm unterstellt, reicht es bei dem erfindungsgemäßen Backenbrecher aus, die Position des Arbeitshubes durch Spaltversatz zu verändern, d.h. mit einem vorgesehenen Arbeitshub von z.B. 40 mm kann der Arbeits-Hubweg der Kolbenstange 5.2 bzw. des Arbeitskolbens 5.5 durch Veränderung der Position der Steuerstange 15 zwischen den beiden in den Figuren 4 und 5 dargestellten Extrempositionen beispielsweise in dem Bereich I zwischen > Null mm bis 40 mm oder in dem Bereich II zwischen 30 mm bis 70 mm oder in dem Bereich III zwischen 60 mm bis 100 mm eingestellt werden, um ein zerkleinertes Produkt mit einer Korngrößenbereich ≤ 40 mm oder von ≤ 70 mm oder von ≤ 100 zu erhalten. Während also bei dem bekannten Backenbrecher der Arbeitshub auf 100 mm eingestellt werden muss, um ein Produkt mit einem Korngrößenbereich ≤ 100 mm zu erreichen, genügt bei dem erfindungsgemäßen Backenbrecher ein Arbeitshub von z.B. 40 mm, der zwischen den Grenzwerten 60 und 100 mm liegt, um eine maximale Größe der Brecherspaltweite zu erreichen und damit ein zerkleinertes Produkt in dem Korngrößenbereich ≤ 100 mm zu erhalten.If you also assumed a maximum possible Verstellhub and thus a maximum possible Brechspaltweite of 100 mm in the jaw crusher invention, it is sufficient to change the position of the working stroke by gap offset in the jaw crusher, ie with an intended stroke of eg 40 mm can Working stroke of the piston rod 5.2 and the working piston 5.5 by changing the position of the control rod 15 between the two in the FIGS. 4 and 5 for example, in the range I between> 0 mm to 40 mm or in the range II between 30 mm to 70 mm or in the range III between 60 mm to 100 mm can be set to a comminuted product with a particle size range ≤ 40 mm or of ≤ 70 mm or ≤ 100. Thus, while in the known jaw crusher the working stroke must be set to 100 mm in order to achieve a product with a grain size range ≤ 100 mm, sufficient in the jaw crusher invention, a working stroke of eg 40 mm, which is between the limits of 60 and 100 mm To achieve a maximum size of the Brecherspaltweite and thus obtain a crushed product in the grain size range ≤ 100 mm.

Claims (7)

  1. Jaw crusher comprising
    - two opposing crusher jaws (2, 3) which are attached to a jaw crusher frame and at least one crusher jaw of which is a hinged jaw (3),
    - at least one piston/cylinder unit which can drive the hinged jaw (3) in an oscillating manner, the hydraulic cylinder (5) of which is pivotally mounted and the piston rod (5.2) of which is hinged to the hinged jaw (3), said piston rod being extendable out of the hydraulic cylinder (5) and retractable back into the cylinder (1) in an oscillating manner,
    - a control device with which the crusher gap width between the two crusher jaws (2, 3) can be set, the control device containing a control unit (6) which acts on the piston/cylinder unit and with which a preset working stroke of the piston rod (5.2) and thereby a constant limited pivot range of the hinged jaw (3) can be set within the lower and upper pivot range thresholds of the hinged jaw (3),
    characterized in that the control unit (6) is stationarily supported and contains a control rod (15) which, in its rest position is lockable in different positions and is rigidly connected to the piston rod (5.2), and in that control unit (6) acts upon a control valve unit (7) with which the oscillating pressurisation of the hydraulic piston/cylinder unit (5) with hydraulic fluid is controllable for the oscillating alternating movement of the piston rod (5.2), and in that the control unit (6) contains a first cylinder housing (8) and a second cylinder housing (9) which is connected coaxially to the first cylinder housing within which a slide valve (10) is slidable in a sealed manner, which is provided with an axial internal bore (10.1), which, at least at a part of its length, has an inner toothed ring with which an outer toothed ring of a peg (11) meshes which for displacing the control rod (15) can be rotated by means of an adjusting wheel (12) which is located outside of the cylinder housing (8).
  2. Jaw crusher according to claim 1, characterized in that the control rod (15) in its rest position is lockable in an optional position between two extreme positions.
  3. Jaw crusher according to claim 1, characterized in that to the slide valve (10) a threaded spindle (13) is attached coaxially, which is guided in a nut (14) which is fixed to the control rod (15) and which has an internal bore (15.1) extending across a part of its length and joining the nut (14).
  4. Jaw crusher according to claim 1 or 2, characterized in that the slide valve (10) has a peripheral groove (10.2) and forms part of a 4/2-port valve (16) with four accesses (Y, Y1 and X, X1), such , that during the operation of the jaw crusher the peripheral groove (10.2) alternately faces the accesses (Y, Y1 or X, X1), in order to actuate the control valve unit (7) through hydraulic control conduits such that the hydraulic cylinder (5) is charged with hydraulic fluid in order to move out or to move in the piston rod (5.2).
  5. Jaw crusher according to claim 4, characterized in that the control valve unit (7) has a 4/2-port valve (20) the slide valve of which as adjustable depending on the position of the slide valve (10) of the 4/2-port valve (16) of the control unit (6).
  6. Jaw crusher according to claim 1, characterized in that the control unit (6) is a hydraulically operating control unit.
  7. Jaw crusher according to claim 1, characterized in that the control unit (6) is attached stationarily to the hydraulic cylinder (5).
EP13741660.8A 2012-06-12 2013-06-07 Jaw crusher Active EP2861348B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13741660T PL2861348T3 (en) 2012-06-12 2013-06-07 Jaw crusher

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012105033A DE102012105033A1 (en) 2012-06-12 2012-06-12 Jaw crusher and method of operating a jaw crusher
PCT/DE2013/100206 WO2013185754A1 (en) 2012-06-12 2013-06-07 Jaw crusher and method for operating a jaw crusher

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EP2861348A1 EP2861348A1 (en) 2015-04-22
EP2861348B1 true EP2861348B1 (en) 2018-04-11

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EP13741660.8A Active EP2861348B1 (en) 2012-06-12 2013-06-07 Jaw crusher

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EP (1) EP2861348B1 (en)
DE (1) DE102012105033A1 (en)
ES (1) ES2676225T3 (en)
PL (1) PL2861348T3 (en)
PT (1) PT2861348T (en)
TR (1) TR201809590T4 (en)
WO (1) WO2013185754A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140319259A1 (en) * 2013-04-26 2014-10-30 Minyu Machinery Corp. Ltd. Structure of crusher
DE102014007497B3 (en) * 2014-05-23 2015-07-30 Thyssenkrupp Ag Crusher for crushing crushed material, and method for operating a crusher

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1863492A (en) * 1931-04-02 1932-06-14 Earl J Leap Stone crusher
DE1129040B (en) * 1958-09-13 1962-05-03 Bochumer Eisen Heintzmann Hydraulic drive for jaw crusher
FR2598939B1 (en) * 1986-05-23 1991-05-24 Soldan Ida JAW CRUSHER
DE4400922A1 (en) 1994-01-14 1995-03-30 Krupp Foerdertechnik Gmbh Jaw crusher with a device for protecting against overload and for setting the width of the crushing gap
DE9401617U1 (en) 1994-02-01 1994-11-10 Dappen Peter Jaw crusher for coarse and medium size crushing of hard materials

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TR201809590T4 (en) 2018-07-23
DE102012105033A1 (en) 2013-12-12
PT2861348T (en) 2018-07-06
WO2013185754A1 (en) 2013-12-19
EP2861348A1 (en) 2015-04-22
PL2861348T3 (en) 2018-10-31
ES2676225T3 (en) 2018-07-17

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