초록 ▼

A cone-type rock crusher includes a base, a fixed shaft projected upwardly from the base, a rotatable member positioned around the fixed shaft, a generally conical crusher head positioned over the rotatable member, and a stationary crushing surface over the head. The rotatable member revolves on a f

A cone-type rock crusher includes a base, a fixed shaft projected upwardly from the base, a rotatable member positioned around the fixed shaft, a generally conical crusher head positioned over the rotatable member, and a stationary crushing surface over the head. The rotatable member revolves on a first set of bearings including a tapered roller thrust bearing between the top of the shaft and the rotatable member, a tapered roller radial bearing between the side of the shaft and the rotatable member, and a much larger tapered roller bearing between the side of the rotatable member and a carrier that is fixed in position with respect to the base. Both radial bearings have their tapered rollers arranged in a single row with the large diameter ends of those rollers presented downwardly to facilitate seating the rollers and to permit easy assembly and disassembly. The head is mounted on the rotatable member by a second set of bearings having its axis oblique to the axis of the first set so that as the rotatable member revolves, the head will wobble beneath the stationary crushing surface. The second set of bearings includes a large tapered roller bearing located between the side of the intermediate member and the head, and this bearing transmits thrust as well as radial loads from the head to the rotatable member. It further has its rollers arranged in a single row with their large diameter ends presented downwardly to permit easy seating and disassembly.

대표청구항 ▼

A crusher comprising: a base; a fixed member projected upwardly from the base and being fixed in position with respect to the base; an intermediate member surrounding the fixed member; first bearing means for enabling the intermediate member to rotate with respect to the fixed member about the axis

A crusher comprising: a base; a fixed member projected upwardly from the base and being fixed in position with respect to the base; an intermediate member surrounding the fixed member; first bearing means for enabling the intermediate member to rotate with respect to the fixed member about the axis of the first bearing means, the first bearing means including a thrust bearing located at the upper end of the fixed member where it is between the fixed member and the intermediate member so as to transmit thrust loads from the intermediate member to the fixed member, the first bearing means also including a tapered roller radial bearing surrounding the fixed member near the thrust bearing and being located between the side of the fixed member and the intermediate member, so as to transfer radial loads from the intermediate member to the fixed member, the radial bearing having a single row of tapered rollers with the large diameter ends of the tapered rollers being presented downwardly, the tapered roller radial bearing further being positioned to also transmit some of the thrust load from the intermediate member to the fixed member; means for rotating the intermediate member; a crusher head positioned generally around the intermediate member, the crusher head having an upwardly presented crushing surface; second bearing means between the crusher head and the intermediate member to enable the intermediate member to rotate within crusher head, the axis of the second bearing means being oblique to the axis of the first bearing means, whereby the head will wobble as the intermediate member rotates; a housing extending over the head, the housing having an inlet located above the head so that material to be crushed may be directed through the opening and toward the head; and a downwardly presented crushing surface located in a generally fixed position within the housing, the crushing surface of the housing being positioned opposite to, yet spaced from, the crushing surface on the head, so that material introduced into the housing through the opening will be crushed in the space between the two crushing surfaces as the crusher head wobbles.