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81. 发明专利

JP2001207773A DRIVING CONTROL DEVICE FOR EARTH AUGER 失效
公开(公告)号：JP2001207773A
公开(公告)日：2001-08-03
申请号：JP2000014859
申请日：2000-01-24
申请人： NIPPON SHARYO SEIZO KK
发明人： NAGATA MITSUO , INOUE MASAHIRO
IPC分类号： E21B44/00 , E21B7/00 , E21B44/06
摘要： PROBLEM TO BE SOLVED: To provide a driving control device for an earth auger capable of excavating work by minimizing a temperature rise in a hydraulic fluid even in a relief state. SOLUTION: In this driving control device for the earth auger for arranging a work device driven by a hydraulic motor on a leader erected in front of a base machine so as to be liftable, the hydraulic motor 21 of the work device 5 is connected via a directional control valve 23 from a variable delivery pump 11. A relief valve 25 and a pressure detector 28 are arranged in a delivery passage of the variable delivery pump 11. When the pressure detector 28 detects the fact of being relief preset pressure, a delivery quantity of the variable delivery pump 11 is controlled in a minimum delivery quantity.

82. 发明专利

JP2000073680A EXCAVATION CONTROLLER FOR EXECUTION MACHINE 失效
公开(公告)号：JP2000073680A
公开(公告)日：2000-03-07
申请号：JP24725698
申请日：1998-09-01
申请人： NIPPON SHARYO SEIZO KK
发明人： TOMITA YASUKIMI
IPC分类号： E21B44/00 , E21B7/00 , E21B44/06
摘要： PROBLEM TO BE SOLVED: To obtain an excavation controller for an execution machine, by which excellent excavation efficiency is acquired by efficiently using an internal combustion engine. SOLUTION: In the excavation controller, a hydraulic motor 16 for excavation having variable displacement volume is used as the hydraulic motor 16 for excavation driving an auger screw 14. A supply-pressure sensor 42 for excavation detecting supply pressure to the hydraulic motor 16 for excavation and a revolution-number sensor 15 for excavation detecting the number of revolution of the auger screw 14 are installed, and charging power to the auger screw 14 is calculated from supply pressure and the number of revolution. When charging power is made smaller than the power capable of being output of an internal combustion engine E, the hydraulic motor 16 for excavation is controlled, displacement volume is changed to the reduction side, and the number of revolution of the auger screw 14 is increased.

83. 发明专利

JP2000002083A STATIC TYPE UNDERGROUND EXCAVATOR 失效
公开(公告)号：JP2000002083A
公开(公告)日：2000-01-07
申请号：JP12752099
申请日：1999-03-30
申请人： TRACTO TECHNIK
发明人： PUETTMANN FRANZ-JOSEF , RIEKES ANDREAS , PRUTTI FRANK , KAUFMANN BERNHARD
IPC分类号： E21D9/06 , E21B7/04 , E21B7/20 , E21B7/30 , E21B17/02 , E21B17/046 , E21B17/20 , E21B19/08 , E21B19/086 , E21B44/00 , E21B44/06 , F16L1/024 , F16L55/165
摘要： PROBLEM TO BE SOLVED: To prevent the loss of performance due to the restoration of a link at the time of drilling by a removing head by using a tool and/or the time of the expanding of a pilot pit or the time of the fracture or exchange of a piping laid in a ground. SOLUTION: In a device drilling the inside of a ground, a push-pull link, particularly a ladder-shaped link 14 consists of separate partitions, and each partition is connected mutually by plug-ins (coupling devices). The link 14 is coupled with a push-pull driving section 4. A stationary lock pawl and a thrust pawl can be moved in the longitudinal direction of the link 14, and joined with the driving section 4. The above-mentioned stationary lock pawl and the above- mentioned thrust pawl are engaged with the link 14 so as to be operated to the link 14 respectively in the two mutually opposite operating directions, and forward move the link 14 by stages, and the link 14 is locked temporarily after the forwarding process of the above-mentioned each pawl.

84. 发明专利

JPH11505908A 失效
公开(公告)号：JPH11505908A
公开(公告)日：1999-05-25
申请号：JP53620896
申请日：1996-05-30
IPC分类号： E21B17/07 , E21B21/10 , E21B44/00 , E21B44/06

85. 发明专利

JPH0754568A CONTROL DEVICE FOR HYDRAULIC MOTOR TO DRIVE KELLY-BAR 失效
公开(公告)号：JPH0754568A
公开(公告)日：1995-02-28
申请号：JP23254293
申请日：1993-08-12
申请人： KATO SEISAKUSHO KK
发明人： HIROSE HISAO
IPC分类号： E21B11/00 , E21B44/00 , E21B44/06 , F15B11/028 , F15B11/08
摘要： PURPOSE:To eliminate the need for keeping the direction selector valve of a hydraulic motor for driving a telescopic kelly-bar at a neutral position for approximately two seconds to invalidate the torsional elasticity of the bar at the time of reversing and lifting the rotary drilling bucket of an earth drill biting a bottom hole, and realize a mud shakedown operation for suddenly reversing a bucket rotating direction. CONSTITUTION:A throttled passage 34 to a tank 3 is provided in such a way as capable of resetting a selector valve to a neutral position at the time of closing a normally open valve 23 laid at the intermediate position of a hydraulic circuit 7B for remotely operating the reverse rotation selecting pressure receiving section 4B of a direction selector valve. A relief valve 18 having set pressure equal to or lower than hydraulic motor drive pressure at a normal drilling process but higher than hydraulic motor drive pressure at a mud shaking down process, or a pressure switch is connected to a high pressure hydraulic circuit 2A for drilling. The normally open valve 23 is thereby closed, when the pressure of the circuit 2A exceeds a preset value. Also, when the pressure drops below the preset value, the normally open valve 23 opens, delayed by a time required for the torsional elasticity of a telescopic kelly-bar to disappear.

86. 实用新型

JPH07541Y2 失效
公开(公告)号：JPH07541Y2
公开(公告)日：1995-01-11
申请号：JP13490088
申请日：1988-10-15
IPC分类号： E21B10/32 , E21B11/00 , E21B11/02 , E21B44/00 , E21B44/06 , E21B47/00

87. 发明专利

JPH061035B2 失效
公开(公告)号：JPH061035B2
公开(公告)日：1994-01-05
申请号：JP14899685
申请日：1985-07-05
申请人： OKADA AIYON KK , TEISAKU KK
发明人： TAKEDA MORIHARU , ITO IKUO , BOSHI MAMORU
IPC分类号： E21B1/26 , E21B1/00 , E21B3/00 , E21B19/08 , E21B19/086 , E21B44/00 , E21B44/06 , E21C5/00 , E21C1/00 , E21C5/16

88. 发明专利

JPH04302691A DEVICE FOR PREVENTING EARTH DRILL OVERLOAD 失效
公开(公告)号：JPH04302691A
公开(公告)日：1992-10-26
申请号：JP11956891
申请日：1991-03-27
申请人： SUMITOMO CONSTR MACH
发明人： OHASHI HIROSHI , IDA YOSHITAKA
IPC分类号： B66C13/16 , B66D1/54 , E21B7/00 , E21B15/00 , E21B44/00 , E21B44/06
摘要： PURPOSE:To give an alarm when the thrust of an auger is excessive to give an overload by detecting a load applied to a winding-up rope in the use of the auger with an earth drill. CONSTITUTION:A top sheave of a leader 12 for guiding a winding-up rope 11 is composed of front and rear fixed sheaves 1, 2 and a movable load detecting sheave 3 located on the upper portion of the intermediate section of these shieves. A bracket 4 supporting the movable sheave 3 is held on one end by a fixed pin 5 and on the other end by a movable pin 6. The movable pin 6 is connected to the piston side of a hydraulic cylinder to operate an annunciator operating pressure switch with oil pressure generated in the hydraulic cylinder, so that annuciators like alarming lights, emergency lights, emergency buzzers, etc., are operated.

89. 发明专利

JPH02504175A 失效
公开(公告)号：JPH02504175A
公开(公告)日：1990-11-29
申请号：JP50576589
申请日：1989-04-14
IPC分类号： A01J7/00 , A01J5/01 , E21B1/26 , E21B6/00 , E21B6/04 , E21B19/08 , E21B19/086 , E21B44/06 , G01F11/28 , G01F23/74

90. 实用新型

JPH0220301Y2 失效
公开(公告)号：JPH0220301Y2
公开(公告)日：1990-06-04
申请号：JP14196984
申请日：1984-09-18
IPC分类号： B25D17/10 , E21B1/00 , E21B44/00 , E21B44/06 , E21C3/32

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