公开(公告)号：IT1132125B

公开(公告)日：1986-06-25

申请号：IT2300480

申请日：1980-06-24

Applicant: TAMPELLA OY AB

Inventor： ESA KARRU ,  PEKKA SALMI ,  HANNU PAASONEN ,  AIMO HELIN

IPC: E21B3/00 ,  B25D9/12 ,  E21B1/00 ,  E21B1/26 ,  E21B6/00 ,  E21B6/04 ,  E21B44/02 ,  E21C

Abstract: A hydraulic drilling apparatus, especially a rock drill comprising a body, a cylinder in the body and a percussion piston reciprocating in the cylinder. A tool is connected to the body and a motor is provided for rotating the tool. A control valve is also provided for the percussion power. A control valve is also provided for regulating the motor speed. Both of these control valves are operated independently by one lever. A hydraulically operated flushing valve is also provided. A hydraulic pump and hydraulic channels coact to form a percussion circuit and a rotation circuit is parallelly coupled with the percussion circuit in relation to the hydraulic pump. A flushing valve circuit is controlled by the percussion circuit and a circuit for the free circulation of the hydraulic pump which is parallelly coupled with the percussion circuit in relation to the hydraulic pump. The circuits are connected to the hydraulic pump. The control valves are disposed in the body of the percussion apparatus with one of these valves being in the rotation circuit for controlling the flow rate which valve is a pressure-compensated flow control valve with a throttling control.

公开(公告)号：ZA8203468B

公开(公告)日：1983-03-30

申请号：ZA8203468

申请日：1982-05-19

Applicant: TAMPELLA OY AB

Inventor： STROEM ROLF ,  ESA KARRU ,  PEKKA SALMI ,  HAEKKINEN LEO ,  KALEVI MAEKI-KIHNIAE ,  AIMO HELIN

IPC: E21D9/10 ,  E21C

CPC classification number: E21D9/106

公开(公告)号：ZA823468B

公开(公告)日：1983-03-30

申请号：ZA823468

申请日：1982-05-19

Applicant: TAMPELLA OY AB

Inventor： STROEM ROLF ,  ESA KARRU ,  PEKKA SALMI ,  HAEKKINEN LEO ,  KALEVI MAEKI-KIHNIAE ,  AIMO HELIN

IPC: E21D9/10 ,  E21C

公开(公告)号：BR8003998A

公开(公告)日：1981-01-21

申请号：BR8003998

申请日：1980-06-26

Applicant: TAMPELLA OY AB

Inventor： HANNU PAASONEN ,  AIMO HELIN ,  ESA KARRU ,  PEKKA SALMI

IPC: E21B3/00 ,  B25D9/12 ,  E21B1/00 ,  E21B1/26 ,  E21B6/00 ,  E21B6/04 ,  E21B44/02 ,  E21C1/12

Abstract: A hydraulic drilling apparatus, especially a rock drill comprising a body, a cylinder in the body and a percussion piston reciprocating in the cylinder. A tool is connected to the body and a motor is provided for rotating the tool. A control valve is also provided for the percussion power. A control valve is also provided for regulating the motor speed. Both of these control valves are operated independently by one lever. A hydraulically operated flushing valve is also provided. A hydraulic pump and hydraulic channels coact to form a percussion circuit and a rotation circuit is parallelly coupled with the percussion circuit in relation to the hydraulic pump. A flushing valve circuit is controlled by the percussion circuit and a circuit for the free circulation of the hydraulic pump which is parallelly coupled with the percussion circuit in relation to the hydraulic pump. The circuits are connected to the hydraulic pump. The control valves are disposed in the body of the percussion apparatus with one of these valves being in the rotation circuit for controlling the flow rate which valve is a pressure-compensated flow control valve with a throttling control.