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EP0259296A2 - Broyeur à mâchoires - Google Patents

Broyeur à mâchoires Download PDF

Info

Publication number
EP0259296A2
EP0259296A2 EP87890177A EP87890177A EP0259296A2 EP 0259296 A2 EP0259296 A2 EP 0259296A2 EP 87890177 A EP87890177 A EP 87890177A EP 87890177 A EP87890177 A EP 87890177A EP 0259296 A2 EP0259296 A2 EP 0259296A2
Authority
EP
European Patent Office
Prior art keywords
jaw
movable
crusher
bearings
jaw crusher
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.)
Withdrawn
Application number
EP87890177A
Other languages
German (de)
English (en)
Other versions
EP0259296A3 (fr
Inventor
Franz Dipl.-Ing. Rössler
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.)
Voestalpine AG
Original Assignee
Voestalpine AG
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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0259296A2 publication Critical patent/EP0259296A2/fr
Publication of EP0259296A3 publication Critical patent/EP0259296A3/fr
Withdrawn legal-status Critical Current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 invention relates to a jaw crusher with a fixedly supported jaw and a counter jaw which can be driven in a reciprocating movement relative to this jaw, in which the driven counter jaw is moved by an eccentric shaft at toggle levers which are located one above the other in the vertical direction of the jaw.
  • a jaw crusher of the type mentioned at the outset can be found, for example, in AT-PS alone (A 1423/85).
  • Such jaw crusher which is designed as a toggle lever or double rocker crusher, is used to machine medium and large pieces of rock in a simple and effective manner.
  • the use of toggle levers for driving the movable jaw of such jaw crushers allows large crushing forces to be introduced, with the design of known jaw crushers mostly being such that the movable jaw was pivoted about a pivot axis in the area of the crushing chamber inlet.
  • the movable jaw was mostly curved in order to work with a pivot point located relatively high and close to the line of symmetry of the crushing angle with a minimum of friction during the crushing process and a relatively large stroke in the area of the crushing jaw.
  • the space requirement of the crusher is increased considerably in the vertical direction and there is the disadvantage that the stroke at the crushing chamber inlet is significantly less than the stroke at the crushing chamber outlet, which worsens the Crushing process in the upper area of the crushing chamber and thus a reduction in throughput results.
  • a jaw crusher of the type mentioned at the outset can be found, for example, in US Pat. No. 2,738,933.
  • the driven jaw is supported by a lever which engages approximately centrally on the driven jaw and is supported at the other end on the frame of the jaw crusher.
  • the drive takes place at two points of attack lying one above the other in the height direction of the jaw via toggle levers which are acted upon by an eccentric shaft provided with eccentric cams.
  • a disadvantage of this known jaw crusher is that the drivable jaw is supported only at one point via the lever and thus pivoting of the jaw about an axis lying in the jaw plane cannot be reliably switched off. Due to the great weight of such a jaw, the lever must also be solid.
  • the invention is now aimed at creating a jaw crusher of the type mentioned at the beginning, in which the length can be found with a low overall height and at the same time avoiding impairments of the accessibility of the crusher inlet.
  • the invention further aims to provide a jaw crusher design in which the crushing stroke can be made uniform over the height of the crushing chamber and advantageously kept constant.
  • This object of the inventive design of the jaw crusher consists essentially in the fact that the movable counter jaw is supported by at least two slide bearings or roller bearings arranged at a distance from one another in the vertical direction. Because the movable counter jaw is supported by slide bearings, this slide bearing can be accommodated in the area of the axial height of the movable jaw and the overall height can be saved.
  • the stroke of the jaw over the length of the crushing space can be adapted to the requirements and evened out.
  • the slide bearings or roller bearings are arranged at a distance from one another in the vertical direction, the refractive powers can be absorbed safely.
  • the crushing chamber remains freely accessible from above and there is no impairment in the material feed.
  • the two points of attack also reduce the load on the eccentric shafts and the bearings of the toggle lever mechanism can be made smaller and lighter.
  • an eccentric shaft is loaded symmetrically and, due to this symmetrical load, the bearings of the eccentric shaft can also be dimensioned much smaller.
  • the bearings are advantageously designed as a prism guide, as a result of which the jaw is guided in parallel can be.
  • Complete parallel guidance is obtained when the movable jaw can be driven to the same direction and with the same stroke at both points of attack of the toggle levers, with such a design the stroke in the crusher inlet being the same size as the stroke at the crusher outlet.
  • the crushing process is significantly improved in comparison with known double rocker constructions in the upper region of the crushing chamber, as a result of which an overall increase in throughput can be achieved.
  • the mounting for the movable counter jaw can be designed in a simple manner so that the movable jaw carrier has bearing extensions which have prismatic sliding surfaces, the roof edges of which run essentially parallel to one another. With such a bearing, loads occurring during the breaking process can easily be absorbed without this causing excessive stress on the drive or the bearing.
  • the sliding or rolling bearings are preferably arranged near the upper and near the lower edge of the movable jaw, as a result of which the refractive forces that occur can be absorbed at a large distance between the bearings and stable and safe mounting and guidance of the movable jaw can be achieved.
  • FIG. 1 shows a side view of a jaw crusher according to the invention, partly in section and 2 shows a section along the line II-II of Figure 1 in an enlarged view through one side of the bearing, wherein Figure 1 shows a section along the line II of Figure 2.
  • FIG. 1 shows a jaw crusher 1, the rigid jaw 2 of which is fixed to a jaw carrier 3 by means of clamp closures 4.
  • the jaw support 3 is supported on the housing 5, for which blocks 6 and retaining screws 7 are provided, which hold the jaw support 3 in contact with the blocks 6. With 8 ribs of the cheek plate are designated.
  • the movable jaw 9 is also again fixed via a clamp closure 4 on a jaw carrier 10 which carries bearing extensions 11 which are close to the upper and lower edges of the jaw 9, i.e. are arranged near the crusher inlet or outlet.
  • the bearing extensions 11 have prismatic sliding surfaces 12 which engage in a corresponding hollow prismatic counter profile of bearing shells 13 fixed to the housing 5.
  • the movable jaw 9 is driven via toggle levers 14 and 15, which are driven via a common eccentric shaft 16 with eccentric cams 17 and 18 offset by 180 °.
  • a stroke in the sense of the double arrow 19 is exerted on the movable jaw 9 via the toggle levers 14 and 15.
  • the power transmission takes place via pressure rollers 20 and springs 21 are supported between toggle levers 22 and the housing in order to maintain the frictional connection.
  • the prism guides 12, 13 are clearly visible in the illustration according to FIG. 2, with additional spring plates 23 being shown on the outside of the jaw support 10, via which the jaw support 10 is pulled by springs onto the housing and is thus held in contact with the toggle lever transmission mechanism .
  • the prismatic guide 12, 13 leads to a parallel guidance of the movable jaw 9, the stroke in the crusher inlet being kept equal to the stroke in the crusher outlet due to the symmetrical design of the toggle lever transmission mechanisms.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP87890177A 1986-09-02 1987-07-17 Broyeur à mâchoires Withdrawn EP0259296A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2370/86 1986-09-02
AT237086A ATA237086A (de) 1986-09-02 1986-09-02 Backenbrecher

Publications (2)

Publication Number Publication Date
EP0259296A2 true EP0259296A2 (fr) 1988-03-09
EP0259296A3 EP0259296A3 (fr) 1988-06-08

Family

ID=3533115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87890177A Withdrawn EP0259296A3 (fr) 1986-09-02 1987-07-17 Broyeur à mâchoires

Country Status (2)

Country Link
EP (1) EP0259296A3 (fr)
AT (1) ATA237086A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2144426C1 (ru) * 1998-06-08 2000-01-20 Тюменский государственный нефтегазовый университет Щековая дробилка с регулируемыми параметрами дробления
RU2166366C1 (ru) * 1999-11-01 2001-05-10 Лумельский Вячеслав Александрович Дробильное устройство
DE10206709A1 (de) * 2002-02-18 2003-08-28 Gerhard Reineck Backenbrecher
CN103846120A (zh) * 2013-05-16 2014-06-11 洛阳宇航重工机械有限公司 一种环保节能型颚式破碎机
CN109701679A (zh) * 2019-01-30 2019-05-03 江苏省群飞机械制造有限公司 一种直压式颚式破碎机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112403561A (zh) * 2020-10-30 2021-02-26 重庆贻晨兴工业设计有限责任公司 一种石材专用颚式破碎机及使用方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB220860A (en) * 1923-11-26 1924-08-28 John Fowler And Company Leeds Improvements in or relating to stone crushing machines
US2044653A (en) * 1934-01-13 1936-06-16 Tyler Co W S Crusher
FR876493A (fr) * 1940-12-19 1942-11-06 Concasseur-cribleur-aspirateur-épurateur
US2931585A (en) * 1958-06-30 1960-04-05 Clyde A Butler Rock crusher
AT393233B (de) * 1985-05-10 1991-09-10 Liezen Maschf Backenbrecher

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2144426C1 (ru) * 1998-06-08 2000-01-20 Тюменский государственный нефтегазовый университет Щековая дробилка с регулируемыми параметрами дробления
RU2166366C1 (ru) * 1999-11-01 2001-05-10 Лумельский Вячеслав Александрович Дробильное устройство
DE10206709A1 (de) * 2002-02-18 2003-08-28 Gerhard Reineck Backenbrecher
CN103846120A (zh) * 2013-05-16 2014-06-11 洛阳宇航重工机械有限公司 一种环保节能型颚式破碎机
CN109701679A (zh) * 2019-01-30 2019-05-03 江苏省群飞机械制造有限公司 一种直压式颚式破碎机

Also Published As

Publication number Publication date
EP0259296A3 (fr) 1988-06-08
ATA237086A (de) 1991-11-15

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Inventor name: ROESSLER, FRANZ, DIPL.-ING.