公开(公告)号：US20180087380A1

公开(公告)日：2018-03-29

申请号：US15712452

申请日：2017-09-22

申请人： Joy MM Delaware, Inc.

发明人： Peter A. Lugg ,  Geoffrey W. Keech ,  Stuart Reeves ,  Nagy Daher

IPC分类号： E21C25/18 ,  E21C35/00 ,  E21C31/08

摘要： A machine for excavating rock includes a frame, a cutting device, and a boom. The cutting device includes a cutting disc having a cutting edge, and the cutting disc is rotatable about a cutting device axis. The boom supports the cutting device and includes a first end, a second end, and a boom axis substantially parallel to the cutting device axis. The boom further includes a first portion and a second portion. The first portion is coupled to the frame for rotation about a first pivot axis between a raised position and a lowered position. The second portion is coupled to the cutting device, and the second portion is pivotable about a second pivot axis between a raised position and a lowered position.

公开(公告)号：US20180051562A1

公开(公告)日：2018-02-22

申请号：US15680637

申请日：2017-08-18

申请人： Joy MM Delaware, Inc.

发明人： Nagy Daher ,  Richard Boyd ,  Edward Bagnall ,  Stuart Reeves

IPC分类号： E21C31/08 ,  E21C31/12

CPC分类号： E21C31/08 ,  E21C25/06 ,  E21C25/18 ,  E21C27/02 ,  E21C27/124 ,  E21C29/22 ,  E21C31/12 ,  E21C35/20

摘要： A cutting assembly for a rock excavation machine including a frame. The cutting assembly includes a boom supported on the frame and a cutting device. In some aspects, the boom includes a first portion and a second portion, and the first portion includes a first structure and a second structure slidable relative to the first structure. The second portion includes a first member pivotably coupled to the second structure, and a second member pivotably coupled to the first member. The cutting device is supported on the second member. In some aspects, a material handling device is supported independently of the boom and movable between a retracted position and an extended position independent of the boom.