EP0728524A1 - Concasseur à percussion - Google Patents

Concasseur à percussion Download PDF

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Publication number
EP0728524A1
EP0728524A1 EP96890003A EP96890003A EP0728524A1 EP 0728524 A1 EP0728524 A1 EP 0728524A1 EP 96890003 A EP96890003 A EP 96890003A EP 96890003 A EP96890003 A EP 96890003A EP 0728524 A1 EP0728524 A1 EP 0728524A1
Authority
EP
European Patent Office
Prior art keywords
piston
pin
impact
impact crusher
hollow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP96890003A
Other languages
German (de)
English (en)
Inventor
Günter Müller
Walter Hackmair
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sbm Wageneder GmbH
Original Assignee
Sbm Wageneder GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sbm Wageneder GmbH filed Critical Sbm Wageneder GmbH
Publication of EP0728524A1 publication Critical patent/EP0728524A1/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • B02C13/09—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate
    • B02C13/095—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate with an adjustable anvil or impact plate

Definitions

  • the invention relates to an impact crusher according to the preamble of claim 1.
  • Impact crushers of this type have become known essentially from AT E 1 846 T1 and from DE 35 25 101 A1, which have adjustable impact rockers. These impact rockers are connected by a pin to a hydraulic piston, the piston chambers of the piston being connected to a hydraulic system. This hydraulic system has the task of reducing the reaction forces that arise when there is excessive pressure on the impact rocker.
  • the object of the invention is to carry out the necessary adjustments on the impact rockers with an operationally reliable system which, on the one hand, applies the necessary supporting forces for the crusher operation, and on the other hand protects the crusher from damage when unbreakable foreign bodies with the feed material enter the crusher.
  • the measure according to claim 2 contributes to achieving the object of the invention.
  • the measure according to claim 3 causes the mother with the Pin can be pressed and carries all forces occurring in the axial direction together with the spindle.
  • the spindle drive is used to position and secure the hydraulic cylinder.
  • the measure according to claim 4 has the effect that the differential synchronous cylinder fixed with its receiving or pivot pin carries the entire adjustment system.
  • the spindle drive or the spindle position serves as a stroke limitation or positioning element in the direction of extension. In the direction of retraction of the cylinder, it is held in the rear chamber by the oil pressure and can be freely moved backwards into the end position when safety valves are opened.
  • the measure according to claim 5 makes it possible to dimension the flow openings large, thereby achieving the advantage of quickly evacuating the oil in the two pistons from the piston chambers when action forces occur.
  • the attached valve system controls the oil of the flowing or incoming oil flow.
  • the measure according to claim 6 is advantageous for reasons of space. It serves to make the current cylinder position visible via display devices and to offer the possibility of initiating procedural measures.
  • the impact crusher shown in Fig. 1 consists essentially of a housing 1, in which a rotor 2 is mounted, which in the present case has four blow bars 3 at equal angular intervals.
  • the rotor 2 is driven in the direction of arrow B.
  • two impact rockers 5A, 5B are seen in succession in the direction of rotation of the rotor 2 and are supported by a housing cover 6, which is pivotably mounted on the housing 1 about an axis about an axis 7 in the direction of arrow A.
  • the impact rockers 5A, 5B are each pivotally mounted at the input end about an axis 9 on the housing cover 6 and connected to a cylindrical pin 11 via a joint 10 and a threaded sleeve 12.
  • the desired grain size of the material to be ground is achieved by adjusting the gap between the impact rockers 5A, 5B and the rotor 2.
  • a hydraulic device preferably provided with a differential synchronous cylinder, which allows the impact rockers 5A, 5B to retreat and, after passage of the unbreakable part, a automatic return of the impact rockers 5A, 5B to the initially set position.
  • the hollow pin 11 acts as a piston rod in which a nut 13 is seated, into which a spindle 14 is screwed with its thread 15.
  • the spindle 14 is enclosed by a hollow pin 16 which, like the pin 11, functions as a piston rod and guides the threaded spindle 14.
  • the pin 11 is enclosed at a radial distance from a cylinder 17, at the two ends of which a flange plate 18 or 19 is provided.
  • the device described forms a so-called differential synchronous cylinder 217 (FIG. 4).
  • the spindle 14 is designed as a multi-spline profile 14A or another profile on which an oil motor 24 is seated, the hollow drive shaft of which cooperates with a counter profile 25 with the multi-spline profile 14A.
  • the oil motor 24 is supported on a spring assembly 26, which is clamped between two cylinder parts 27, 28, of which the inner part 28 is guided with its inner end in the cylinder part 27.
  • the bottom 29 of the cylinder part 28 is held by a circlip and secured by a nut 31 which is screwed onto the threaded end 32 of the spindle 14.
  • any other suitable motor can also be used, the motor 24 preferably being an axial piston motor through which the spindle 14 with its multi-spline profile 14A is passed.
  • the spring assembly 26 any other type of suspension, its mounting and attachment can also be selected.
  • the motor 24 is supported at its end facing away from the spring assembly 26 on a bearing 33 with a labyrinth seal 34, which forms the motor-side closure of a housing 35 in which a displacement measuring system 36 (FIG. 3) is integrated, which is a has displaceable magnet 38 which is connected to a carrier 39 which is screwed onto a threaded end 41 of the pin 16 and is secured by a nut 40.
  • a displacement measuring system 36 FIG. 3
  • the motor 24 is started to set the impact rockers 5A or 5B.
  • the motor shaft rotates the multi-spline profile 14A and thus the spindle 14, which, with its thread 15, screws into the nut 13 and moves it with the pin 11 in the axial direction.
  • the pin 11 takes the piston 22 on the one hand via the thread 23 and, on the other hand, the magnet 38 via the threaded part 41 and the carrier 39 and displaces this on the displacement measuring system 36 until the distance traveled by the impact rockers 5A, 5B is displayed on a scale via a remote display is detected.
  • the engine 24 is switched off.
  • FIG. 3 One setting of the magnet 38 is full in FIG. 3 and the other setting is dashed and shown in FIG. 2.
  • the setting shown in broken lines corresponds to the setting of the piston 22 in the cylinder 17 according to FIG. 2.
  • the setting of the impact rockers 5A, 5B takes place in FIG the way that initially the impact rockers are brought into their innermost position by the motor 24, in which they touch the blow bars 3 of the rotor 2.
  • the corresponding position of the piston 22 and the magnet 38 is shown in full in FIG. 3.
  • the motor 24 is then rotated in the opposite direction, returning the spindle 14 with the pin 11, the piston 22 and, via the carrier 39, the magnet 38 until the desired position of the impact rockers 5A, 5B appears on the display.
  • the engine 24 is then switched off. This setting is carried out separately on both impact rockers 5A and 5B by the respective motor 24.
  • a circuit according to FIG. 5 can be used for this purpose, in which the impact rockers 5A and 5B are indicated by the pivot axes 10A, 10B of the joints 10 and the respective piston is designated 22A and 22B.
  • the associated cylinders 17A and 17B are pivotable about the axes 217A and 217B.
  • a drive unit 50 with a motor 51, cooler 52, pump 53 and tank 54 and corresponding monitoring units (not specified in more detail), which are in principle standard designs, serve to supply oil to the two pistons 22A and 22B.
  • Valves 115, 116 each supply motors 24A and 24B for pistons 22A and 22B, respectively.
  • Valves 115 and 116 are solenoid valves which run the oil motor 24A or 24B, which is designed as an axial piston motor, to the left or right in order to rotate the respective spindle 14A or 14B in one direction or the other and to close it in one direction or the other move. If the corresponding setting of the impact rockers 5A, 5B is reached, the two valves 115, 116 are not activated by one shown electrical selector switch set out of operation.
  • a control block 58 which is framed by dash-dotted lines, is used to build up the required supporting force.
  • the corresponding setting of the valve 118 is carried out by a selector switch (not shown).
  • the control block 58 contains the required pressure accumulators, pressure limiting valves and pressure switches which inflate the two spaces in front of and behind the pistons 22A and 22B.
  • Each of the two valves 38.1 and 38.2 controls the inflow or outflow 20 or 21 of the piston 22 of one or the other rocker 5A or 5B.
  • the system described is overlaid with a bladder accumulator control device 31.1 for the impact rocker 5A and 31.2 for the impact rocker 5B, which has the task of maintaining the pressure and switching off the electric motor 51 so that it does not run in the operating position.
  • the bladder memory control devices 31.1 and 31.2 are emptied and the pump 53 is started up again via the motor 51 until the system is inflated, whereupon the bladder memory control device 31.1 and 31.2 respectively
  • Pressure switch 32.1 or 32.2 actuated, which switches off the motor 51.
  • the control is switched so that if one of the two impact rockers 5A or 5B experiences excessive pressure, the pressure limiting valve 38.1 or 38.2 responds to the other impact rocker and opens automatically, so that damage to the rotor or to the impact rockers 5A or 5B is prevented .
  • the two impact rockers 5A and 5B are hydraulically connected via block 58 and can therefore be adjusted both individually and together. Under the influence of an unbreakable foreign body, the two impact rockers simultaneously return to an end position and automatically move back to the previously held position after the foreign body has passed through.
  • the invention is thus based on the combination of the parts according to FIGS. 3 and 4, according to which for the adjustment of the impact rocker this is connected to a hydraulic cylinder in pivot design, the piston chambers of which are connected to a hydraulic system which, in the event of excessive pressure increase on the impact rocker on the pressure side of the Piston reduces the reaction forces that occur.
  • the piston position or crushing gap is adjusted with a spindle drive damped in the end position, which is hydraulically driven by an axial piston motor. If the impact rocker is overloaded, it moves the piston of the hydraulic cylinder 17, the pressure build-up being relieved via a valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP96890003A 1995-02-22 1996-01-08 Concasseur à percussion Ceased EP0728524A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT311/95 1995-02-22
AT0031195A AT402803B (de) 1995-02-22 1995-02-22 Prallbrecher

Publications (1)

Publication Number Publication Date
EP0728524A1 true EP0728524A1 (fr) 1996-08-28

Family

ID=3487201

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96890003A Ceased EP0728524A1 (fr) 1995-02-22 1996-01-08 Concasseur à percussion

Country Status (2)

Country Link
EP (1) EP0728524A1 (fr)
AT (1) AT402803B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006040641A1 (fr) * 2004-10-12 2006-04-20 Officine Meccaniche Di Ponzano Veneto S.P.A. Broyeur rotatif de moellon brut et analogue
EP1655072A1 (fr) * 2004-11-05 2006-05-10 Franzoi Metalmeccanica S.R.L. Dispositif pour ajuster les plaques d'impact dans des broyeurs pour des matériaux inertes et/ou recyclés
WO2011128155A1 (fr) 2010-04-16 2011-10-20 Sandvik Intellectual Property Ab Concasseur à impact à arbre horizontal
CN115837351A (zh) * 2023-02-28 2023-03-24 山西农业大学山西功能食品研究院 一种基于黄花品质的分选装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3525101A1 (de) * 1985-07-13 1987-01-15 Orenstein & Koppel Ag Prallbrecher
EP0391096A2 (fr) * 1989-04-07 1990-10-10 NOELL Service und Maschinentechnik GmbH Procédé de réglage automatique de la fente de broyage, déterminant la granulométrie, d'une machine de broyage et dispositif pour la mise en oeuvre du procédé
EP0513479A1 (fr) * 1991-05-17 1992-11-19 Krupp Fördertechnik GmbH Concasseur à percussion et procédé de réglage de son interstice de travail

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456557A1 (fr) * 1979-05-17 1980-12-12 Dragon App Dispositif pour le reglage a distance de l'intervalle separant une enclume d'un rotor de concasseur a percussion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3525101A1 (de) * 1985-07-13 1987-01-15 Orenstein & Koppel Ag Prallbrecher
EP0391096A2 (fr) * 1989-04-07 1990-10-10 NOELL Service und Maschinentechnik GmbH Procédé de réglage automatique de la fente de broyage, déterminant la granulométrie, d'une machine de broyage et dispositif pour la mise en oeuvre du procédé
EP0513479A1 (fr) * 1991-05-17 1992-11-19 Krupp Fördertechnik GmbH Concasseur à percussion et procédé de réglage de son interstice de travail

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006040641A1 (fr) * 2004-10-12 2006-04-20 Officine Meccaniche Di Ponzano Veneto S.P.A. Broyeur rotatif de moellon brut et analogue
EP1655072A1 (fr) * 2004-11-05 2006-05-10 Franzoi Metalmeccanica S.R.L. Dispositif pour ajuster les plaques d'impact dans des broyeurs pour des matériaux inertes et/ou recyclés
WO2011128155A1 (fr) 2010-04-16 2011-10-20 Sandvik Intellectual Property Ab Concasseur à impact à arbre horizontal
US8668158B2 (en) 2010-04-16 2014-03-11 Sandvik Intellectual Property Ab Horizontal shaft impact crusher
US8967504B2 (en) 2010-04-16 2015-03-03 Sandvik Intellectual Property Ab Horizontal shaft impact crusher
EP3563932A1 (fr) 2010-04-16 2019-11-06 Sandvik Intellectual Property AB Concasseur à impact à arbre horizontal
CN115837351A (zh) * 2023-02-28 2023-03-24 山西农业大学山西功能食品研究院 一种基于黄花品质的分选装置

Also Published As

Publication number Publication date
ATA31195A (de) 1997-01-15
AT402803B (de) 1997-09-25

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