GB647793A - Gyratory crusher - Google Patents

Abstract

647,793. Gyratory crushers. KUENEMAN, J. R., and KUENEMAN, D. Dec. 22, 1947, No. 33779. Convention date. Dec. 30, 1946. [Class 59] A gyratory crusher has a conical working face, the apex of the con being uppermost, provided by a head mounted for gyration about a fixed point above the apex of its cone in a fixed upright axis and a fixed concave overlying and enclosing the 'head and having a conically tapered bore providing a working face opposite that of the head with its apex at a point in said - axis above the point of gyration of the head. The concave 69 is mounted in an upper frame section 17 which is vertically adjustable by the use of spacing members 67. The working face of the conical head 74 is provided by the mantle 76 which is held in place by a helical spring 78 and nut 78<SP>1</SP>. The core 74 of the head is integral with a stem 24' mounted eccentrically within a sleeve 23 which may be rotated by gearing with a shaft 28 which is disposed within a housing 29. The base of the stem 24" is spherically cupped to receive a slide block 44 which moves over a stationary plate 43 disposed within a cup 21 at the base of the apparatus. The penetration of dust between the stem 24<SP>1</SP> and the sleeve 23 is prevented by means of an oil-proof, dusttight flexible sleeve 85 and a ring member 88. The sleeve 23 is surrounded by a fixed collar member 52 and an outer wall 22 of the cup 21, radial webs 19, 51 being arranged across a flow passage 34. Bolts 66 secure the upper frame section 17 to an intermediate frame section 16 comprising axially separable portions 45, 46 having flanges 57, 58 interconnected by bolts 59 bearing helical springs 62 which enable the portions 45, 46 to be separated and thus provide an overload release for the crushing zone 79. Pins 63, depending from flanges 58 engage with flanges 57 to prevent circumferential movement of the portion 46. In a modification, Fig. 9 (not shown), an upwardly extending portion of the core of the crushing head is mounted within a sphere disposed within a housing fixed by means of spider members, above the crushing zone, the point of gyration of the crushing head being at the centre of the sphere. Lubrication of the stem 24<SP>1</SP> and sleeve 23 is effected by pumping oil through a passage 92 in the base of the cup 21 into a cavity in the slider block 44. whence it passes through passages 94, 94<SP>1</SP> in the stem 24 and reaches the base of the sleeve 23 through a slot 98 provided in thestem bushing 39<SP>11</SP>, returning for cleaning and re-circulation by passing into the upper portion of the cup 21 and away from' it through a passage 21". The upper parts of the stem 24 and sleeve 23 are lubricated as oil passes upwardly in a slot 102 in stem bushing 39<SP>1</SP>, through the upper part of the sleeve 23 and downwardly along a. slot 104 in the sleeve exterior or through a passage in the collar member 52 to a space 54. Some oil then passes to the bevel pinion 27 of the shaft 28 and some passes to the shaft housing 29. The operating shaft 38 of the oil pump may be geared to the shaft 28.