公开(公告)号：WO1991010038A1

公开(公告)日：1991-07-11

申请号：PCT/US1990007650

申请日：1990-12-26

Applicant: INGERSOLL-RAND COMPANY

Inventor： INGERSOLL-RAND COMPANY ,  FU, Chuen-Cheng

IPC: E21B04/14

CPC classification number: E21B4/14

Abstract: A fluid actuated percussion rock drill comprising a hollow wear sleeve (12) and a piston (14) slidingly disposed within the wear sleeve. Drive (58) and return pressure surfaces (32) bias the piston between drive and return positions, respectively. A high pressure port (18) is included. A return chamber (22) is exposed to the return pressure surface (32). A drive chamber (36) is exposed to the drive pressure surface (58). A pressure sensitive valve (42) is movable between an open and a closed position. When the valve (42) is in the open position, the high pressure port (18) is connected to the drive chamber (36). The valve means (42) includes a first valve pressure surface (48) for exposure to the drive chamber and a second pressure surface (46) for exposure to the high pressure port. A third valve pressure surface (50) is exposed to an outlet pressure port (54). The volume of fluid travels between the high pressure port (18) and the drive chamber (36) when the valve (42) is in an open position and can be limited as desired for different drill applications. The use of the valve (42) to control the high pressure into the drive chamber (36) also results in a condition which is more desirable in a rock drill. The condition allows the high pressure port (18) to be disconnected to the drive chamber (36) for most of the piston return stroke, but to stay connected for most of the piston drive stroke.

公开(公告)号：WO1994020725A1

公开(公告)日：1994-09-15

申请号：PCT/US1994001252

申请日：1994-02-03

Applicant: INGERSOLL-RAND COMPANY

Inventor： INGERSOLL-RAND COMPANY ,  FU, Chuen-Cheng ,  LAY, Warren, T.

IPC: E21B04/00

CPC classification number: B25D9/14 ,  E21B4/14

Abstract: A pressure sensitive valve (200) for a fluid-actuated percussive drill (10) includes passageways (44) for fluid flow to expose a valve surface to a burst of short-interval, high pressure fluid from a drive chamber (36) to cause early closing of the valve (200).

Abstract translation: 用于流体致动的冲击钻（10）的压敏阀（200）包括用于流体流动的通道（44），以将阀表面暴露于来自驱动室（36）的短间隔高压流体的爆发，从而使 早期关闭阀门（200）。

公开(公告)号：EP0687340A1

公开(公告)日：1995-12-20

申请号：EP94907415.0

申请日：1994-02-03

Applicant: INGERSOLL-RAND COMPANY

Inventor： FU, Chuen-Cheng ,  LAY, Warren, T.

IPC: E21B4 ,  B25D9

CPC classification number: B25D9/14 ,  E21B4/14

Abstract: A pressure sensitive valve (200) for a fluid-actuated percussive drill (10) includes passageways (44) for fluid flow to expose a valve surface to a burst of short-interval, high pressure fluid from a drive chamber (36) to cause early closing of the valve (200).

公开(公告)号：EP0687340B1

公开(公告)日：2000-11-08

申请号：EP94907415.7

申请日：1994-02-03

Applicant: INGERSOLL-RAND COMPANY

Inventor： FU, Chuen-Cheng ,  LAY, Warren, T.

IPC: E21B4/00

CPC classification number: B25D9/14 ,  E21B4/14

Abstract: A pressure sensitive valve (200) for a fluid-actuated percussive drill (10) includes passageways (44) for fluid flow to expose a valve surface to a burst of short-interval, high pressure fluid from a drive chamber (36) to cause early closing of the valve (200).

公开(公告)号：EP0506850B1

公开(公告)日：1995-04-26

申请号：EP91902482.8

申请日：1990-12-26

Applicant: INGERSOLL-RAND COMPANY

Inventor： FU, Chuen-Cheng

IPC: E21B4/14

CPC classification number: E21B4/14

Abstract: A fluid actuated percussion rock drill comprising a hollow wear sleeve (12) and a piston (14) slidingly disposed within the wear sleeve. Drive (58) and return pressure surfaces (32) bias the piston between drive and return positions, respectively. A high pressure port (18) is included. A return chamber (22) is exposed to the return pressure surface (32). A drive chamber (36) is exposed to the drive pressure surface (58). A pressure sensitive valve (42) is movable between an open and a closed position. When the valve (42) is in the open position, the high pressure port (18) is connected to the drive chamber (36). The valve means (42) includes a first valve pressure surface (48) for exposure to the drive chamber and a second pressure surface (46) for exposure to the high pressure port. A third valve pressure surface (50) is exposed to an outlet pressure port (54). The volume of fluid travels between the high pressure port (18) and the drive chamber (36) when the valve (42) is in an open position and can be limited as desired for different drill applications. The use of the valve (42) to control the high pressure into the drive chamber (36) also results in a condition which is more desirable in a rock drill. The condition allows the high pressure port (18) to be disconnected to the drive chamber (36) for most of the piston return stroke, but to stay connected for most of the piston drive stroke.

公开(公告)号：EP0506850A1

公开(公告)日：1992-10-07

申请号：EP91902482.0

申请日：1990-12-26

Applicant: INGERSOLL-RAND COMPANY

Inventor： FU, Chuen-Cheng

IPC: E21B4

CPC classification number: E21B4/14

Abstract: Perforatrice pour rocher à percussion actionnée par un fluide comprenant une gaine d'usure creuse (12) et un piston (14) disposé de manière à coulisser à l'intérieur de ladite gaine. Les surfaces d'entraînement (58) et de retour (32) de la pression sollicitent le piston respectivement entre les positions d'entraînement et de retour. Un orifice à haute pression (18) est prévu. Une chambre de retour (22) est exposée à la surface de pression de retour (32). Une chambre d'entraînement (36) est soumise à la surface de pression d'entraînement (58). Une soupape sensible à la pression (42) peut se déplacer entre une position ouverte et une position fermée. Lorsque la soupape (42) est en position ouverte, l'orifice à haute pression (18) est relié à la chambre d'entraînement (36). Le système de soupape (42) comprend une première surface de pression de la soupape (48) soumise à la chambre d'entraînement et une seconde surface de pression (46) soumise à l'orifice à haute pression. Une troisième surface de pression de la soupape (50) est exposée à un orifice de sortie de la pression (54). Le volume de liquide circule entre l'orifice à haute pression (18) et la chambre d'entraînement (36) lorsque la soupape (42) se trouve en position ouverte et il peut être limité, si nécessaire, en fonction des diverses applications de perforation recherchées. L'utilisation d'une soupape (42) pour commander la pression dans la chambre d'entraînement (36) permet également d'obtenir un fonctionnement plus adapté à une perforatrice à rocher. Ce type de fonctionnement permet à l'orifice à haute pression (18) d'être déconnecté vers la chambre d'entraînement (36) sur la majeure partie de la course de retour du piston mais de rester cependant connecté sur la majeure partie de la course d'entraînement du piston.