公开(公告)号：US20150129269A1

公开(公告)日：2015-05-14

申请号：US14539638

申请日：2014-11-12

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Timo MUUTTONEN ,  Mikko HÄMÄLÄINEN ,  Lars KANDELIN ,  Teemu HIETAKARI

IPC: B25D9/02 ,  E21B6/00 ,  E21B1/04 ,  B25D17/24 ,  B25D9/06

CPC classification number: B25D9/02 ,  B25D9/06 ,  B25D9/12 ,  B25D17/06 ,  B25D17/245 ,  B25D2250/065 ,  B25D2250/121 ,  B25D2250/231 ,  E02F3/966 ,  E21B1/02 ,  E21B4/14 ,  Y10T29/49822

Abstract: An impact device and a method of dismounting an impact device from a breaking device is disclosed. The impact device includes a bush having a percussion piston disposed therein. The impact device is arranged inside an impact device space formed in a frame of a breaking device. The percussion piston is provided with a pull shoulder allowing a dismounting force in a return direction to be transmitted from the percussion piston to the bush. Thus, the bush is extracted from the frame by means of the percussion piston.

Abstract translation: 公开了一种冲击装置以及从破碎装置中拆卸冲击装置的方法。 冲击装置包括其中设置有冲击活塞的衬套。 冲击装置布置在形成在破碎装置的框架中的冲击装置空间的内部。 冲击活塞设有一个拉肩，允许沿返回方向的拆卸力从冲击活塞传递到衬套。 因此，通过冲击活塞将衬套从框架中取出。

公开(公告)号：US20230294260A1

公开(公告)日：2023-09-21

申请号：US17928683

申请日：2021-06-01

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Antti KOSKIMAKI ,  Lars KANDELIN ,  Mikko HAMALAINEN ,  Timo KELA ,  Matti VIINIKKA ,  Esa LAAKKOLA

IPC: B25D17/06 ,  B25D9/12 ,  E21B1/26

CPC classification number: B25D17/06 ,  B25D9/12 ,  E21B1/26 ,  B25D2217/0019 ,  B25D2250/125 ,  B25D2250/331

Abstract: A piston guiding element, rock drilling machine and method for supporting a front end portion of a percussion piston of a rock drilling machine. The piston guiding element includes a braking recess at its rear end. The element further includes at least one bearing sleeve, which is provided with two axially successive slide bearing sections. Hydraulic fluid is conveyed between the slide bearing sections via a feed system.