EP0444019B1 - Broyeur à mâchoires - Google Patents

Broyeur à mâchoires Download PDF

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Publication number
EP0444019B1
EP0444019B1 EP91890034A EP91890034A EP0444019B1 EP 0444019 B1 EP0444019 B1 EP 0444019B1 EP 91890034 A EP91890034 A EP 91890034A EP 91890034 A EP91890034 A EP 91890034A EP 0444019 B1 EP0444019 B1 EP 0444019B1
Authority
EP
European Patent Office
Prior art keywords
jaw
rolling
toggle levers
radius
curvature
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.)
Revoked
Application number
EP91890034A
Other languages
German (de)
English (en)
Other versions
EP0444019A1 (fr
Inventor
Christof Rabofsky
Wolfgang Ruschitzka
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.)
Maschinenfabrik Liezen GmbH
Original Assignee
Maschinenfabrik Liezen 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3489191&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0444019(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Maschinenfabrik Liezen GmbH filed Critical Maschinenfabrik Liezen GmbH
Publication of EP0444019A1 publication Critical patent/EP0444019A1/fr
Application granted granted Critical
Publication of EP0444019B1 publication Critical patent/EP0444019B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B02C1/00—Crushing or disintegrating by reciprocating members
    • B02C1/02—Jaw crushers or pulverisers
    • B02C1/04—Jaw crushers or pulverisers with single-acting jaws

Definitions

  • the innovation relates to a jaw crusher with a fixedly supported jaw and a counter jaw that can be driven to and fro relative to this jaw about a pivot axis, in which the drivable jaw is moved by an eccentric shaft via toggle levers and the power transmission of the toggle lever takes place via rolling joints .
  • sliding joints are also provided on the support of the sliding joints on the frame of the jaw crusher and on the point of application of the knee joint on the connecting rod connected to the eccentric shaft.
  • sliding joints as are also provided in the construction according to DE-OS 33 28 253, it is known to carry out the power transmission via rolling joints.
  • rolling joints A known construction of such rolling joints can also be found in DE-OS 33 28 253. While sliding joints, for example, also as a correspondingly concave-cylindrical and convex-cylindrical parts can be formed, a rolling joint arises when an equally convex-cylindrical end face of a toggle lever engages a convex-cylindrical surface.
  • the innovation now aims to ensure the permissible roll angle for a jaw crusher of the type mentioned at the outset, even when using rolling joints, and at the same time to produce less wear with small component dimensions.
  • the design according to the invention is made such that at least one rolling joint has at least one rolling surface which deviates from a circular cylindrical shape and whose radius is different for different angular positions of the toggle levers.
  • the rolling surface of the joints is formed by a curve, the radii of which are adapted to the forces to be expected depending on the angular positions of the toggle lever system that occur, the dimensions of the rolling surfaces can be significantly reduced while at the same time absorbing large amounts of force and heating due to the design and it is particularly possible with such a design, as corresponds to a preferred design, that the radius of the curvature of the rolling surface is chosen to be larger when the toggle lever is in an angular position closer to the extended position than when the toggle lever is more distant from the extended position.
  • the usable angular path and stroke are increased without the maximum permissible pressures being exceeded.
  • the variation of the radii of curvature of the rolling surfaces or the end surfaces of the toggle levers correspondingly interacting with the rolling surfaces can be used to achieve the required breaking stroke while minimizing the toggle lever deflection, which in turn can reduce the required area to a minimum and smaller components Can be used.
  • the design is such that the end faces of the ends of the toggle lever interacting with the rolling surfaces are designed as flat surfaces or with progressive or degressive curvature of the surfaces, with such a design in addition to the reductions in heat development and wear typical for rolling joints also characterized in that the machining of the end faces of the toggle levers does not require compliance with certain tolerances. Conversely, at Sliding joints a violation of narrow tolerance lead to a significantly increased wear.
  • a particularly favorable design of the force absorption with a small dimension of the rolling surfaces can be achieved if the design is such that the ratio of the smallest radius of curvature of a rolling surface to the largest radius of curvature of the same rolling surface is at least 1: 1.5, preferably approximately 1: 1, 8 to 1: 2.5.
  • FIG. 1 shows a schematic illustration of a jaw crusher according to the prior art with conventional sliding joints
  • 2 shows an enlarged representation of the toggle lever system in accordance with the innovation
  • FIG. 3 shows, on a further enlarged scale, a view of a rolling surface according to the innovation of a rolling joint of FIG. 2.
  • a double toggle jaw crusher 1 is shown according to the prior art, on the housing 2, a bearing 3 for a bearing axis 4 is fixed.
  • a movable crusher rocker 5 is swingingly mounted on the bearing axis 4 and is driven by toggle lever 6 via an eccentric shaft 7.
  • the toggle levers 6 are acted upon in the region of a joint piece 8 via a connecting rod 9 and held in contact with the eccentric shaft 7 via a spring 10.
  • By rotating the eccentric shaft 7, the toggle levers 6 are moved alternately into a more extended and an angled position, which results in a stroke of the breaker arm 5 in the direction of the double arrow 11.
  • the crusher gap 12 can optionally be adjusted by appropriate adjustment of the stationary counter jaw 13.
  • the support of the forces or the power transmission to the movable crusher rocker 5 via the toggle levers 6 takes place via spherical bearings 14 and 15.
  • the spherical bearing 15 is supported on the crusher rear wall 16.
  • a spring 17 is shown in FIG. 1, which acts on the breaker rocker 5 against the application of force by the toggle levers 6.
  • Both the stationary counter jaw 13 and the crusher rocker 5 are each equipped with crushing jaws 18 and 19 designed as wearing parts.
  • the wearing parts 18 and 19 can be fixed in a simple manner, as is indicated for the breaker arm by the pull rod 20.
  • the toggle lever system is shown enlarged in FIG. 2, the reference numerals of FIG. 1 being retained for the same components.
  • the toggle levers 6 are in turn acted upon by an eccentric shaft 7 via a connecting rod 9, a central joint piece 8 being provided.
  • rolling joints 21 and 22 are provided, at least one of the rolling surfaces having a surface deviating from a circular cylindrical shape, the radius of which is different for different angular positions of the toggle levers, as shown in FIG Fig. 3 is shown in an enlarged scale.
  • FIG. 2 the reference numerals of FIG. 1 being retained for the same components.
  • the toggle levers 6 are in turn acted upon by an eccentric shaft 7 via a connecting rod 9, a central joint piece 8 being provided.
  • rolling joints 21 and 22 are provided, at least one of the rolling surfaces having a surface deviating from a circular cylindrical shape, the radius of which is different for different angular positions of the toggle levers, as shown in FIG Fig. 3 is shown in an enlarged scale.
  • FIG. 3 In the embodiment shown
  • the rolling surface of the abutment component 23 on the movable crusher rocker 5 and the abutment component - 24, which in turn is fixed on the crusher rear wall 7, is designed with such a rolling surface deviating from a circular shape.
  • the toggle levers 6 have essentially flat end surfaces 25 in the area of the rolling joints 21 and 22.
  • a similar design of the end surfaces 25 of the toggle levers can be provided.
  • it can also be in the area of the central joint piece 8 an appropriate design of the rolling surfaces can be selected.
  • FIG. 2 For the sake of clarity, the components which are further required for the proper functioning and which do not relate to essential features of the innovation are not shown again in FIG. 2 and can be provided essentially analogously to the known design according to FIG. 1.
  • the abutment component 23 is shown with its rolling surface 26 on a further enlarged scale, three chord areas s 1, s 2 and s 3 can be distinguished from one another, each corresponding to areas with different radius of curvature R 1, R 2 and R 3.
  • the radii of curvature of the rolling surface 26 are chosen such that the smallest radius of curvature R3 was selected at the start of the stroke and in such a way with a relatively small amount of force, while a position of the angle lever, not shown, in a position closer to the extended position, a larger radius of curvature R1 due to the larger forces occurring is chosen.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Saccharide Compounds (AREA)

Claims (4)

  1. Concasseur à mâchoires (1) comprenant une mâchoire (5) prenant appui sur un point fixe et une contre-mâchoire (5) pouvant être entraînée en un mouvement relatif alternatif (11) par rapport à cette mâchoire (5), en tournant autour d'un axe d'oscillation (4), dans lequel la mâchoire mobile est mise en mouvement par un arbre à excentrique (7) par l'intermédiaire de biellettes de genouillère (6), et où la transmission de la force des biellettes (6) de la genouillère s'effectue par l'intermédiaire d'articulations (21, 22) à mouvement de roulement, caractérisé en ce qu'au moins une articulation (21 à 22) à mouvement de roulement présente au moins une surface de roulement (26) dont la configuration s'écarte de la forme cylindrique à base circulaire et dont le rayon (R₁, R₂, R₃) est différent pour les différentes positions angulaires des biellettes de genouillère (6).
  2. Concasseur à mâchoires selon la revendication 1, caractérisé en ce que le rayon (R₁) de la courbure de la surface de roulement (26) est choisi plus grand dans une position angulaire des biellettes de genouillère (6) qui est plus proche de la position d'extension que dans les positions angulaires des biellettes de genouillère (6) qui sont plus éloignées de la position d'extension.
  3. Concasseur à mâchoires selon la revendication 1 ou 2, caractérisé en ce que les surfaces frontales (25) des extrémités des biellettes de genouillère (6) qui coopèrent avec les surfaces de roulement (26) sont constituées par des surfaces planes ou par des surfaces possédant une courbure progressive ou dégressive.
  4. Concasseur à mâcnoires selon la revendication 1, 2 ou 3, caractérisé en ce que le rapport entre le plus petit rayon de courbure (R₃) d'une surface de roulement (26) et le plus grand rayon de courbure (R₁) de la même surface de roulement (26) est d'au moins 1:1,5, de préférence d'environ 1:1,8 à 1:2,5.
EP91890034A 1990-02-20 1991-02-20 Broyeur à mâchoires Revoked EP0444019B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0038590A AT401477B (de) 1990-02-20 1990-02-20 Backenbrecher
AT385/90 1990-02-20

Publications (2)

Publication Number Publication Date
EP0444019A1 EP0444019A1 (fr) 1991-08-28
EP0444019B1 true EP0444019B1 (fr) 1993-10-13

Family

ID=3489191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890034A Revoked EP0444019B1 (fr) 1990-02-20 1991-02-20 Broyeur à mâchoires

Country Status (3)

Country Link
EP (1) EP0444019B1 (fr)
AT (2) AT401477B (fr)
DE (2) DE9006168U1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9400521A (nl) * 1994-03-30 1995-11-01 Gerardus Cornelis Petrus Maria Continu werkende (hydraulische-) breker voor het vergruizen van onder anderen steen-, beton-, asfaltdelen en dergelijke, monteerbaar aan een hydraulische graafmachine.
US8322643B2 (en) 2010-07-23 2012-12-04 Mining Technologies International Inc. Rock crusher attachment
CN104069930B (zh) * 2014-06-30 2016-01-06 山东莱钢建设有限公司 一种立轴拉杆护罩及其固定方法
CN108144676A (zh) * 2016-12-06 2018-06-12 郑州狮虎磨料磨具有限公司 一种新型颚式破碎机
CN110404619B (zh) * 2019-08-01 2021-05-11 山东耀华特耐科技有限公司 应用玄武岩的浇注料的生产设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB773359A (en) * 1954-10-14 1957-04-24 Kloeckner Humboldt Deutz Ag A jaw crusher
FR1269258A (fr) * 1960-06-27 1961-08-11 Ateliers Et Fonderies De Tamar Perfectionnements aux concasseurs à mâchoires
DE1243954B (de) * 1964-03-17 1967-07-06 Weserhuette Ag Eisenwerk Backenbrecher
SU967554A1 (ru) * 1980-06-16 1982-10-23 Томский инженерно-строительный институт Распорна плита щековой дробилки

Also Published As

Publication number Publication date
ATE95729T1 (de) 1993-10-15
AT401477B (de) 1996-09-25
DE59100470D1 (de) 1993-11-18
EP0444019A1 (fr) 1991-08-28
ATA38590A (de) 1996-02-15
DE9006168U1 (de) 1990-08-09

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