公开(公告)号：US20160003372A1

公开(公告)日：2016-01-07

申请号：US14789030

申请日：2015-07-01

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Timo LEINO ,  Timo MUUTTONEN ,  Antti KOSKIMAKI ,  Ari KOTALA

IPC: F16K47/04 ,  E21B21/10 ,  E21B21/08 ,  F16K31/12

CPC classification number: E21B4/14 ,  E21B4/06 ,  E21B21/08 ,  E21B21/103 ,  F16K31/12 ,  F16K47/04

Abstract: A control valve for controlling flow of a pressure fluid in a breaking device includes a sleeve-like control valve having at least one opening enabling flow of the pressure fluid through the opening. The at least one opening includes at least one wall, at least a part of which is not arranged in a direction parallel to a radial direction of the control valve extending through the middle point of the cross section of the opening on the outer circumference of the control valve, such that the pressure fluid flowing through the opening may be arranged to rotate the control valve about the longitudinal axis of the control valve.

Abstract translation: 用于控制断开装置中的压力流体流动的控制阀包括套筒状的控制阀，该阀套具有至少一个使得压力流体能够通过开口流动的开口。 所述至少一个开口包括至少一个壁，所述至少一个壁的至少一部分不沿与所述控制阀的径向方向平行的方向设置，所述控制阀延伸穿过所述开口外周上的所述开口的横截面的中点 控制阀，使得流过开口的压力流体可以布置成使控制阀围绕控制阀的纵向轴线旋转。

公开(公告)号：US20170370150A1

公开(公告)日：2017-12-28

申请号：US15629074

申请日：2017-06-21

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Esa RANTALA ,  Timo MUUTTONEN ,  Ari KOTALA ,  Pekka SAUKKO

IPC: E21B7/02 ,  E21B1/02

CPC classification number: E21B7/022 ,  E21B1/02 ,  E21B7/025

Abstract: A rock drill includes a frame, a percussion member, an axial shank, and an axial sleeve provided within the frame and including a first pressure surface provided in a first pressure space and a second pressure surface provided in a second pressure space. A first channel is provided in the axial sleeve for providing a connection between the first pressure space and the second pressure space in at least one position of the axial sleeve in the frame. A second pressure channel connected to the second pressure space is connectable to external pressure. A iu pressure accumulator is connected to the first pressure space and the flow of the pressure medium outwards from the first pressure space is throttled.

公开(公告)号：US20160144498A1

公开(公告)日：2016-05-26

申请号：US14945950

申请日：2015-11-19

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Timo MUUTTONEN ,  Antti KOSKIMÄKI ,  Ari KOTALA ,  Timo LEINO

IPC: B25D9/18 ,  E21B1/00 ,  B25D17/06

CPC classification number: B25D9/18 ,  B25D17/06 ,  B25D2217/0023 ,  E21B1/00

Abstract: A percussion piston for a rock drill machine having a pilot cylinder, a distributor and a pressure medium includes a control edge configurable to cause a change in the position of the distributor in a direction parallel to the axial direction of the percussion piston as the percussion piston moves in the impact direction (A) in relation to the pilot cylinder. The control edge of the percussion piston includes at least one notch provided on the outer periphery of the control edge and arranged to cause a start of a state change for the distributor before the control edge of the percussion piston passes by a corresponding control edge provided on the distributor or pilot cylinder

Abstract translation: 用于具有先导缸，分配器和压力介质的凿岩机的冲击活塞包括可配置成使得分配器在平行于冲击活塞的轴向的方向上的位置改变的控制边缘，作为冲击活塞 相对于先导气缸在冲击方向（A）上移动。 冲击活塞的控制边缘包括设置在控制边缘的外周上的至少一个凹口，并且布置成在冲击活塞的控制边缘经过相应的控制边缘之前引起分配器的状态改变开始 分配器或导向缸