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 present invention relates to a jaw crusher, particularly a stone crusher, comprising two crushing plates, one inoperative, stationary, preferably adjustable crushing plate and one opposing, operative, movable, eccentrically driven crushing plate.
• the operative crushing plate is usually on the upper or lower part pivotally mounted about a stationary axis, wherein the end portion of the crushing plate located opposite the mounting thereof constitutes the movable, crushing part of the plate.
• a mounting involves that the operative crushing plate must be given a large movement or stroke at said crushing part in order to obtain a certain movement adjacent the mounted end.
• Such a large stroke involves increased crusher dimensions within the plane for the pivotal movement of the operative crushing plate.
• said mounting involves an inappropriate crushing and other treatment, including transport towards the outlet opening, of stones and other materials which are desired to be crushed to pieces having less and more usable sizes.
• the operative, movable crushing plate is mounted on two ⁇ pacedly disposed, rotary, operatable shaft portions, each eccentrically positioned in relation to the respective drive axis belonging thereto; i.e. the shaft portions to be mounted and driven are the centrical shaft portions of the respective shaft in which each of the eccentrical shaft portions is included.
• said drive axis coincides with the rotational axis of said centrical shaft portions.
• the two shafts are synchronized.
• the defined mounting device for the operative crushing plate allows that the entire crushing plate, from top to bottom, is given an equal movement and an equal stroke.
• the operative crushing plate As the operative crushing plate is mounted on said two eccentrical shaft portions, and wherein synchronized shafts are used, homogenous crushing effect is achieved across the operative movable crushing plate. Therefore, the stroke thereof may be reduced in relation to prior art technique, resulting in smoother operation and performance, larger revolution, lower need for power, as well as improved crushing economy. With such a mounting, the operative crushing plate will obtain a crushing movement as well as a rotating movement.
• Figure 1 shows a side elevational view of a jaw crusher of the invention, partly in section on line I - I in figure 2;
• Figure 2 shows a top plan view of the jaw crusher of figure i;
• Figure 3 shows diagrammatically a gear transmission for synchronous operation of the shafts wherein the aforesaid eccentrical shaft portions are included, forming the mounting of the operative crushing plate.
• the housing of the jaw crusher shown is designed as an external box having two mutually opposing solid side walls 1 and two mutually opposing, partly open end walls 2, wherein side and end walls 1, 2 are welded together to form a sturdy, braced unit.
• One crushing plate 3 constituting the inoperative, stationary crushing plate of the jaw crusher is on the upper part, for adjusting purposes, pivotally mounted on a stationary shaft 5, whereby the inclination angle of the crushing plate 3 may be adjusted in relation to a vertical plane, in order to adjust the outlet opening 6 to the desired slot measure and, thus, the fed-out stone size.
• the inoperative crushing plate 3 serves an adjusting means 7 built up from a number of shims or spacers 7 ' and disposed at the bottom end of the crushing plate 3.
• the inclination angle of the inoperative crushing plate 3 is altered upon removal or addition of one or more of said shims or spacers 7 ' . Subsequent to adjustment, the crushing plate 3 is locked in position by means of bolts 8.
• the other crushing plate 4 constituting the operative, movable crushing plate of the jaw crusher is mounted on two equal eccentrical shaft portions 9 and 10 by means of slide bearings, the two eccentrical shaft portions 9 and 10 being located at different levels.
• the centrical shaft portions of the shafts each including one of the eccentrical shaft portions 9 and 10, respectively, is denoted 11 and 12, respectively.
• the centrical rotational axis of the shafts is denoted 11' and 12*, respectively, the axes of the eccentrical shaft portions 9, 10 being indicated at 9 • , 10'.
• the centrical portions 11 and 12 of the shafts are passed through the external box, on which they are mounted in slide bearings 13 and 14, see figure 2.
• each centrical shaft portions 11, 12 are passed into a gear housing 15; here, each centrical shaft portions 11, 12 is provided with a gear wheel 16 and 17, respectively, see figure 3.
• gear wheels 16, 17 are disposed synchronously meshing with a drive gear 18 mounted on a shaft 19.
• This shaft 19 is mounted in bearings and carries a fly wheel 20.
• the mounting of the operative movable crushing plate 4 on the two eccentrical shaft portions 9 and 10 allows the entire crushing plate 4, from top to bottom, to get an equal movement and an equal stroke.
• the operative movable crushing plate 4 will get both a crushing and a rotating motion.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Food Science & Technology (AREA)
• Crushing And Grinding (AREA)
• Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
• Polishing Bodies And Polishing Tools (AREA)
• Prostheses (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=19895725

Family Applications (1)

Country Status (5)

Families Citing this family (4)

Family Cites Families (3)

• 1993
  • 1993-01-06 NO NO930020A patent/NO176424C/no unknown
• 1994
  • 1994-01-05 AU AU58677/94A patent/AU5867794A/en not_active Abandoned
  • 1994-01-05 EP EP94904786A patent/EP0676987A1/de not_active Withdrawn
  • 1994-01-05 WO PCT/NO1994/000002 patent/WO1994015713A1/en not_active Application Discontinuation
• 1995
  • 1995-06-20 FI FI953033A patent/FI953033A/fi not_active Application Discontinuation

Non-Patent Citations (1)

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