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    6.
    发明专利
    未知

    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.

    7.
    发明专利
    未知

    公开(公告)号：IT1138496B

    公开(公告)日：1986-09-17

    申请号：IT2362281

    申请日：1981-08-24

    Applicant: TAMPELLA OY AB

    Inventor： HANNU PAASONEN ,  PEKKA SALMI ,  JARMO HEINONEN

    IPC: E21B19/24 ,  F16C29/10 ,  E21C

    Abstract: A drill steel centralizer comprising a body having an immovable jaw positioned in stationary relation to the body. A movable jaw and drill steel guide between said jaws that can be opened and closed by means of the movement of the movable jaw. A locking device providing means by which the movable jaw can cause the drill steel guide to be locked and released into the closed and open positions. Thus, the locking device is held in its locked position by an elastic member that is arranged to transmit a force attempting to open the jaw past the elastic member directly to the body.

    8.
    发明专利
    未知

    公开(公告)号：IT8548276D0

    公开(公告)日：1985-06-25

    申请号：IT4827685

    申请日：1985-06-25

    Applicant: TAMPELLA OY AB

    Inventor： PEKKA SALMI ,  TIMO MUUTTONEN

    IPC: B23B45/16 ,  B25D17/08 ,  E21B1/00 ,  E21B1/38 ,  F16D1/08 ,  F16D3/18 ,  E21C

    Abstract: A coupling arrangement for a percussion drilling machine for coupling of a shank (7) unrotatably to a frame bushing (2) rotatably mounted in a frame and rotated by a rotating device. The frame bushing is provided with axial driving grooves (12) opening towards the shank and the shank is provided with axial counter grooves (13) opening towards the frame bushing. Rod-like wedge pieces (11) are mounted each in a pair of grooves formed by the grooves. The cross-section of each wedge piece comprises an arched surface portion (11a) and at least one planar surface portion (11b). Such wedge piece can adjust its position by turning in one groove of the pair of grooves so that the planar surface of the wedge piece is pressed into a planar contact with the planar surface of the other groove.

    10.
    发明专利
    未知

    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.

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