Driving arrangement for rotary mining heads of mining machines
Continuous mining machine having a boom member with a fixed material dislodging means
Cutter drum drive assembly for canted end sections Patent #: 4270803
ApplicationNo. 07/074060 filed on 07/16/1987
US Classes:299/76, Cutter shiftable vertically299/78Vertical cutter tooth orbit
ExaminersPrimary: Massie, Jerome W.
Assistant: Bagnell, David
Attorney, Agent or Firm
International ClassE21D 9/10 (20060101)
Foreign Application Priority Data1986-07-23 AT
AbstractIn a drift advancing machine cutting rolls are rotatably supported on a centrally arranged pivoted arm. Each cutting roll has a separate drive, each of which comprises a drive motor, a drive shaft and a driven shaft being driven via a bevel gear gearing. The drive shaft is a hollow shaft, within which is accommodated the second drive shaft.