Gyratory crusher with arrangement for restricting rotation

Abstract

A gyratory crusher has a crushing head (22) on which a first crushing shell (30) is mounted, a frame on which a second crushing shell is mounted, and a driving device, which is arranged by means of a rotating eccentric device to cause the crushing head (22) to execute a gyratory movement for crushing of material. The crushing head (22) is connected to the frame by way of a rotation-restricting arrangement (40), which comprises a beater (44) in a tank (42). Spinning of the crushing head (22) is restricted by the beater (44) being braked, during operation of the crusher, by a liquid contained in the tank (42).

Description

technical field

[0001] The invention relates to a device for limiting spinning in a gyratory crusher comprising: a crushing head on which a first crushing shell is mounted; a frame on which a second crushing shell is mounted Mounted on this frame, the second crushing shell defines the crushing gap together with the first crushing shell; and the drive means, which is arranged to cause the crushing head to perform a rotary movement through the eccentric device, so as to crush the material introduced into the crushing gap Material. Background technique

[0002] Gyratory crushers of the type described above can be used, for example, to break ore and rock material into smaller sizes. The problem associated with this type of gyratory crusher is that when no material is being fed to the crusher, the crushing head will eventually start to rotate with the eccentric, this is commonly referred to as autorotation. If the crushing head is spinning when the feed material is reintroduced...

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