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31. 发明专利

JP2001164869A HYDRAULIC CIRCUIT FOR AUGER LIFT DEVICE OF PILE DRIVER AND DRIVE PRESSURE ADJUSTING METHOD FOR AUGER LIFT DEVICE 失效
公开(公告)号：JP2001164869A
公开(公告)日：2001-06-19
申请号：JP35048399
申请日：1999-12-09
申请人： NIPPON SHARYO SEIZO KK
发明人： NAGATA MITSUO , YAMAZAKI TAKANORI
IPC分类号： E21B7/00 , E21B44/00 , E21B44/06
摘要： PROBLEM TO BE SOLVED: To allow the lowering speed of an auger rotation drive device to follow the drilling speed of an auger screw when it is accelerated. SOLUTION: The ascent side circuit 9a of a variable hydraulic motor 9 is provided with a pressure switch 16 and a lamp 17 reporting that the pressure of the ascent side circuit 9a detected by the pressure switch 16 approaches the release set pressures of cross relief valves 14, 15.

32. 发明专利

JP2000130063A JAMMING PREVENTION DEVICE FOR DRILL 失效
公开(公告)号：JP2000130063A
公开(公告)日：2000-05-09
申请号：JP30742998
申请日：1998-10-28
申请人： FURUKAWA CO LTD
发明人： YAMAMOTO TAKAHIRO
IPC分类号： E21B44/00 , E21B19/08
摘要： PROBLEM TO BE SOLVED: To improve responsiveness against jamming, eliminate abrupt pressure fluctuation of hydraulic equipment, reduce shocks and vibration, increase durability, simplify circuits, and reduce cost. SOLUTION: In a drilling machine in which a normal rotation pipe line 15 and a reverse rotation pipe line 16 are connected to a drill rotation motor 13 of a rotary mechanism from a rotation control valve 14, and an advancing pipe line 18 and a retreating pipe line 19 are connected to a feed motor 7 of a feeding mechanism from a feeding control valve 17, a main relief valve 21 with a vent is provided in the advancing pipe line 18 of the feed motor 7, and a pilot operation switching valve 41 usually opened is provided in a vent pipe line 23. A pilot pipe line 43 is connected to a pilot port of the pilot operation switching valve 41 through a sequence valve 42 from the normal rotation pipe line 15 of the drill rotation motor 13.

33. 发明专利

JPH11173055A EXCAVATION CONTROL METHOD FOR CASING DRIVER, EXCAVATION CONTROLLER, AND SELF-SETTLING LOAD MEASURING METHOD 失效
公开(公告)号：JPH11173055A
公开(公告)日：1999-06-29
申请号：JP33895697
申请日：1997-12-09
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： ODA HISAKAZU , TAMURA KATSUMI , TSUCHIYA KIYOSHI , KUSUMI HIROSHI , OZAWA HAJIME , ISHII TOSHIHISA , HIROSE YOSHIAKI
IPC分类号： E21B7/20 , E02D7/22 , E21B44/00 , E21B44/06
摘要： PROBLEM TO BE SOLVED: To provide a control technique to prevent a casing pipe from running away by reducing energy loss at a relief valve for pressure regulation at the cylinder side of a thrust cylinder. SOLUTION: When excavating ground with a casing pipe 10 by using a casing driver equipped with a pilot-operation type relief valve 32 capable of regulating the pressure at the cylinder side of a thrust cylinder 6, in order to prevent it from running away, the thrust bearing 6 is extended to a degree of leaving a stroke capable of extending a height portion of a cutter bit 26 and the casing pipe 10 is held with a casing grasping band 9, and the casing pipe 10 is raised by a cutter bit height with a thrust cylinder 6 and is rotated by a hydraulic motor 12. Under this condition, a self settling load obtained by measuring a pressure at the cylinder side and a pressure at the rod side of the thrust cylinder 6 is set to the setting pressure of the relief valve 32 by the pressure at the cylinder side in such a manner that a supporting force supporting the lifting frame 5 at the cylinder side will not be lowered.

34. 发明专利

JP2871250B2 失效
公开(公告)号：JP2871250B2
公开(公告)日：1999-03-17
申请号：JP33350791
申请日：1991-12-17
申请人： MITSUBISHI JUKOGYO KK
发明人： MATOBA NOBUAKI , KUGE YOSHIHIRO , HAYASHI RYOJI
IPC分类号： E21B11/00 , E02F3/47 , E21B44/00 , E21B44/06 , E21B44/08

35. 发明专利

JP2829539B2 失效
公开(公告)号：JP2829539B2
公开(公告)日：1998-11-25
申请号：JP8286790
申请日：1990-03-29
申请人： ASAHI KASEI KOGYO KK , KOKEN KOGYO KK
发明人： MOTOMURA OSAMU , SHISHIDO TOMIO , SHINJO JUN , SUZUKI KOJI , OOKANDA SATORU
IPC分类号： E21B44/00 , E21B7/00 , E21B44/04

36. 发明专利

JPH10281764A VERTICAL DATA DISPLAY 失效
公开(公告)号：JPH10281764A
公开(公告)日：1998-10-23
申请号：JP9333597
申请日：1997-04-11
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： OZAWA HAJIME
IPC分类号： E21B44/00 , G01B5/24 , G01B21/22 , G01C9/00 , G01D3/02
摘要： PROBLEM TO BE SOLVED: To widen the display range while enhancing the display resolution by decreasing the display width per unit inclination at a position remote from the origin of a coordinate system as compared with a position close to the origin. SOLUTION: When a casing driver body is inclining rearward to the right, a target is displayed at a position corresponding to the inclination angle in the first quadrant of orthogonal coordinates. When it is inclining rearward to the left, the target is displayed at a position corresponding to the inclination angle in the second quadrant, when it is inclining forward to the left, the target is displayed at a position corresponding to the inclination angle in the third quadrant, and when it is inclining forward to the right, the target is displayed at a position corresponding to the inclination angle in the fourth quadrant. Since the display width per unit inclination is set smaller at a position remote from the origin as compared with a position close to the origin, it is increased in the vicinity of the origin of orthogonal coordinates and the resolving power for displaying the inclination of the body is enhanced. The display width is decreased at a point remote from the origin and the range for displaying the inclination of the body is widened. Consequently, the display range is widened while enhancing the resolving power.

37. 发明专利

JPH10131661A CONTROL PANEL FOR CASING DRIVER 失效
公开(公告)号：JPH10131661A
公开(公告)日：1998-05-19
申请号：JP29301196
申请日：1996-11-05
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： OZAWA HAJIME , HIROSE YOSHIAKI
IPC分类号： E21B44/00 , G09F9/00
摘要： PROBLEM TO BE SOLVED: To integrate a control part and a display part without causing enlargement and worsening of handling performance. SOLUTION: This control pannel is provided with an elevating frame fitted to a base frame through a thrust cylinder, a rotor fitted to the elevating frame by a hydraulic motor, and a switch for displaying operation condition and enabling operation of a casing driver having a band for holding a casing mounted on an elevation frame by a hydraulic motor. In this case, a touch panel displaying prestored characters and figures on an image plane, with a display area and a display image plane freely changeable by the contact action of a fingertip is provided, and displays 119-128 and the like and switches 107, 110-118, and the like are arranged in the display image plane.

38. 发明专利

JPH1061368A DRILLING CONTROLLER FOR ROCK-DRILL 失效
公开(公告)号：JPH1061368A
公开(公告)日：1998-03-03
申请号：JP21999296
申请日：1996-08-21
申请人： FURUKAWA CO LTD
发明人： GOTO KAZUYA , YANAGISAWA MASASHI , GOMI TOSHIHIKO
IPC分类号： E21B19/08 , E21B19/084 , E21B44/00 , E21C5/00
摘要： PROBLEM TO BE SOLVED: To eliminate a difference in work of individual persons and improve drilling efficiency by automating drilling operation of a rock-drill based on data from a detection means which detects an operation situation of an impact mechanism and the like of the rock drill and hole drilling data stored in a control part. SOLUTION: A hydraulic drive part 15 which drives an impact mechanism, a rotary mechanism, etc., and an air drive part 16 which supplies compressed air into a flushing mechanism 14 are installed on a traveling truck 5. An impact pressure detector 19, a rotation pressure detector 20, and a feed length detector 22 which detect impact pressure, rotation pressure, feed length, etc., of a rock drill 10 are provided in the hydraulic drive part 15, and a flushing pressure detector 23 is provided in the air drive part 16, respectively. An input part 31 is provided in the vicinity of a driver's seat in an operator cabin 24, and hole drilling data such as hole drilling procedures is stored in a computer having functions of storage, computation, and control which is provided in a control part 25 in advance. Consequently, it is possible to reduce fatigue of an operator and obtain stable drilling accuracy which is not affected by a degree of skill of the operator.

39. 发明专利

JP2718822B2 失效
公开(公告)号：JP2718822B2
公开(公告)日：1998-02-25
申请号：JP50633690
申请日：1990-03-30
IPC分类号： E21B12/02 , E21B44/00 , E21B44/08 , E21B47/00

40. 发明专利

JPH1018752A DRILLING CONTROL DEVICE FOR HYDRAULIC CRAWLER DRILL 失效
公开(公告)号：JPH1018752A
公开(公告)日：1998-01-20
申请号：JP17034696
申请日：1996-06-28
申请人： FURUKAWA CO LTD
发明人： KANEKO TSUTOMU
IPC分类号： E21B44/00 , E21B7/02 , E21B15/00 , E21B19/08 , E21B44/02 , E21B44/06 , E21C5/16 , E21C11/02
摘要： PROBLEM TO BE SOLVED: To reduce the thrust of feed mechanism when the rotary resistance of a crawler drill increases during drilling. SOLUTION: An advancing pipe line FF and a backing pipe line FRE in a feed mechanism 4 are connected thereto with a fast feed solenoid selector valve 9, and further, the advancing pipe line FF is connected thereto with a pressure reducing valve 6 downstream of the solenoid valve 9, and an advancing flow regulating valve 10 in parallel with the solenoid valve 9 while the backing pipe line FR is connected thereto with a relief valve 8 for regulating the backing pressure, upstream of the solenoid valve 9, and a backing pressure regulating valve 12 in parallel with the solenoid valve 9. Next, a relief valve 15 for regulating the advancing pressure is connected to a working pressure control port of the pressure reducing valve 6 through an advancing pressure selector valve 14, and a pilot selector valve 23 and a check valve 24 are connected between the backing flow regulating valve 12 and the feed mechanism 4. Further, the backing pipe line FR and the advancing pipe line FF are connected together through the pilot selector valve 23, and an orifice 25 and a check valve 26 are connected thereto in parallel. A pilot pipe line P from the pilot selector valve 23 is connected to a normal rotation pipe line RF through a pilot changing solenoid valve 27, and is connected to a tank 22 through an orifice 28.

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