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1. 发明专利

JPH08246779A FEMALE JOINT UNIT IN AUTOMATIC COUPLING DEVICE FOR OUTPUT SHAFT AND EXCAVATION WORKING SHAFT 失效
公开(公告)号：JPH08246779A
公开(公告)日：1996-09-24
申请号：JP8091595
申请日：1995-03-14
申请人： SANWA KIZAI CO LTD
发明人： TSUBOTA KAZUKI
IPC分类号： E21B10/44 , E21B17/03 , F16D1/02 , F16D1/04
摘要： PURPOSE: To aim at the promotion of miniaturization and lightweightiness in a female joint part and the omission of a slip ring mechanism. CONSTITUTION: An output shaft 16 is projected out of a driving device to be composed of mounting a motor or the like on a holder to be supported in an irrotational state on a support member, while a tubular female joint 20, where a male joint 34 is to be fitted and vice versa, is clamped tight to this output shaft, and a lock member 25 is supported so as to make it retractable in a direction engaging or disengaging to or from a lock groove of the male joint inserted into the female joint from a window 24 pierced through a tubular wall of the female joint. An operating ring 28 consisting of a magnetic member to press directly or indirectly the lock member to being engaged with the lock groove is supported on an outer boundary of the female joint free of reciprocating slide motion to a lock member pressing position and a pressing releasing position, and then a slide motion driving solenoid coil 32 of the operating ring is supported on an irrotational holder.

2. 发明专利

JPH07158056A CONTROL DEVICE FOR SOIL IMPROVEMENT MACHINE 失效
公开(公告)号：JPH07158056A
公开(公告)日：1995-06-20
申请号：JP30908093
申请日：1993-12-09
申请人： SANWA KIZAI CO LTD
发明人： TSUBOTA KAZUKI , INOUE KOJI
IPC分类号： E02F9/20 , E02D3/12 , E02D17/13 , E02F5/02
摘要： PURPOSE:To improve the soil to the best condition suitable for the properties thereof, regardless of the change of an excavation or drawing speed due to the properties, by calculating the number of revolutions of an agitation rod optimum for soil agitation at all times or at every unit time. CONSTITUTION:At an excavation and agitation process, an electric motor 7 is first started to rotate an agitation rod 8. Then, a drive section 4 is lowered, while the soil is being filled with chemicals 11 from the end of the rod 8, thereby improving the soil. When the soil is being excavated and agitated, a current excavation depth is always detected from the paid-out length or the like of a wire 5. Then, an excavation speed is calculated on the basis of a signal for the excavation depth so detected and furthermore, the optimum number of revolutions of the rod 8 is calculated, using the established formula. The result of the calculation is converted to a frequency signal and transmitted to the motor 7 and even to the rod 8. At the time of drawing the rod 8, the optimum number of revolutions is also calculated for the control thereof.

3. 发明专利

JPH08303168A MOTOR PROTECTIVE CONTROLLER 失效
公开(公告)号：JPH08303168A
公开(公告)日：1996-11-19
申请号：JP10723595
申请日：1995-05-01
申请人： SANWA KIZAI CO LTD
发明人： TAKAHASHI HIDEO , TSUBOTA KAZUKI
IPC分类号： E21B7/00 , G01R19/165
摘要： PURPOSE: To protect and control burning properly in consideration of a coil temperature and a current value by detecting both the coil temperature and the current value. CONSTITUTION: In an excavator excavating the ground by rotating and driving an excavating shaft by an electric motor 10, the excavator has a temperature detector 20 detecting the coil temperature of the electric motor 10 directly or indirectly, a current detector 21 detecting the current value of the electric motor 10 and a controller 23. The controller 23 computes an operation lower- limit current value by the coil temperature detected by the temperatures detector 20 while having the calculation of a motor operating time by the coil temperature and the current value of the electric motor 10 when the current value of the electric motor 10 detected by the current detector 21 exceeds the operation lower-limit current value, the start of the measurement of the time elapsed, and the stop function of the electric motor 10 at a time when the time elapsed exceeds the operating time.

4. 发明专利

JPH05287721A 失效
公开(公告)号：JPH05287721A
公开(公告)日：1993-11-02
申请号：JP8558492
申请日：1992-04-07
申请人： NIPPON CONCRETE IND CO LTD , SANWA KIZAI CO LTD
发明人： OSHIMA AKIRA , TSUBOTA KAZUKI
IPC分类号： E02D1/00 , E21B7/00
摘要： PURPOSE:To facilitate comparative decision by displaying ground bearing-power data based on the N-value data of the ground obtained by previous measurement and detecting data at the time of actual excavation on the same screen. CONSTITUTION:A current data detecting means 9 detecting a current value at the time of the excavation of a motor for driving an auger driving the auger of an excavator boring the ground, a depth detecting means 11 detecting the vertical travel of the auger 4, a signal converter 18 converting detecting signals from each detecting means into digital signals for the input of a personal computer and the personal computer 17 with a CRT 19, to which current data and N-value data acquired by previous boring investigation are input on the basis of a signal input from the signal converter and which displays the data on the same screen, are used. An N value is displayed beforehand on the CRT 19, the current data of the auger and the depth of excavation start to be measured at the same time as the start of excavation by the excavator, and the detecting signals are input to the personal computer 17 and displayed on the same screen together with the N-value data to the CRT 19.

5. 发明专利

JPH1088568A AUTOMATIC CONTROL DEVICE FOR GROUND IMPROVING MACHINE 失效
公开(公告)号：JPH1088568A
公开(公告)日：1998-04-07
申请号：JP24805896
申请日：1996-09-19
申请人： TAKENAKA KOMUTEN CO , SANWA KIZAI CO LTD
发明人： AOYANAGI HAYAO , TSUBOTA KAZUKI
IPC分类号： E02D3/12
摘要： PROBLEM TO BE SOLVED: To automate the control for the stirring speed and the chemical feeding quantity of a ground improving machine. SOLUTION: A ground improving machine for improving the ground comprises an excavation depth detecting device 11 for detecting the excavation depth from the moving distance of a driving part 4 and an arithmetic device 12. The arithmetic device 12 includes a function of calculating the excavation speed on the basis of the excavation depth input from the excavation depth detecting device 1, a function of calculating the required rotating speed required at present from the calculated excavation speed and a designated rotating speed required for stirring a predetermined constant depth, a function of giving a command for rotating at a required rotating speed to a motor of the driving part 4, a function of calculating the required discharge quantity required at present from the excavating speed and a designated discharge quantity of chemicals require for stirring the predetermined constant depth, and a function of giving a command for discharging a required discharge quantity of chemicals to a chemical feeding pump.

6. 发明专利

JPH07208054A DRIVE CONTROLLER OF EXCAVATION MACHINE 失效
公开(公告)号：JPH07208054A
公开(公告)日：1995-08-08
申请号：JP660494
申请日：1994-01-25
申请人： SANWA KIZAI CO LTD
发明人： TSUBOTA KAZUKI , INOUE KOJI
IPC分类号： E21B3/02 , E02D17/13 , E02F5/02 , E21B7/00
摘要： PURPOSE:To secure a necessary torque for excavation without over loading true driving motor of an excavator and increase the revolution as high as possible to carry out efficient excavation. CONSTITUTION:A driving controller of an excavator is provided with an ordinary driving circuit 9 driving a motor 7, an inverter circuit 10, a circuit- changeover device 11 selectively changing over both circuits 9, 10 and connecting the motor 7 of excavator, a loading current detector 12 of the motor, a discriminating device 13 of the driving method of the motor, and an inverter speed setter 14. The discriminating device of the driving method of the motor controls the circuit changeover device so as to change the ordinary circuit to the inverter circuit when the load current detected by the current detector is within the preset value and change the inverter circuit to the ordinary circuit 9 when the load current exceeds the preset value. And further, the inverter frequency is raised when the load current is within a preset figure in a specified frequency and the inverter frequency is kept constant when it exceeds the preset figure.

7. 发明专利

JP2000011286A MULTIPLEX TRANSMITTER FOR DRILLING ROD 失效
公开(公告)号：JP2000011286A
公开(公告)日：2000-01-14
申请号：JP17604498
申请日：1998-06-23
申请人： SANWA KIZAI CO LTD
发明人： HAMANO MAMORU , TSUBOTA KAZUKI
IPC分类号： E21B47/02 , G08C15/04
摘要： PROBLEM TO BE SOLVED: To provide a multiplex transmitter which can supply operation power supply to an electric measuring instrument provided at a drilling head with a simpler structure. SOLUTION: This device transmits a measurement signal to an excavation mechanism 3 provided on the upper end of a drilling rod 1 from an electric measuring instrument 25 provided to a drilling head 2 at the lower end of the drilling rod 1 by way of a transmission line 11 consisting of a cable inserted in the drilling rod 1. Here, the measurement signal is transmitted to the excavation mechanism 3 from the electric measuring instrument 25 by way of the transmission line 11 in accordance with a spectrum spreading modulation system, and an operation power is supplied to the electric measuring instrument 25 from the excavation mechanism 3 by way of the transmission line 11 used for signal transmission.

8. 发明专利

JPH11107668A SIGNAL TRANSMISSION DEVICE FOR EXCAVATION ROD 失效
公开(公告)号：JPH11107668A
公开(公告)日：1999-04-20
申请号：JP26632697
申请日：1997-09-30
申请人： SANWA KIZAI CO LTD
发明人： HAMANO MAMORU , TSUBOTA KAZUKI , YAMAZAKI KAZUO , FUJII HAJIME
IPC分类号： E21B17/00 , G08C19/00
摘要： PROBLEM TO BE SOLVED: To make it possible to automatically connect a signal transmitting electric circuit in synchronization with the extension of the main body of an excavating rod when adding the excavating rod. SOLUTION: This device comprises an excavation rod main body 1 having a hollow construction with a male joint portion 2 at one end and a female joint portion 3 at the other end, an electric wire protecting pipe 5 inserted to the main body 1 and fixed in axial direction made of a conductive material with a male coupling portion 7 at one end and a female coupling portion 8 at the other end for supporting the electric circuit at a minus side, and a conductive seal ring inserted into the wire protective pipe 5 with a male connecting portion 10 at one end and a female coupling portion 8 for locating both of them closely each other. At the time of extending the main body 1 of the excavation rod, the male and female coupling portions 7, 8 of the wire protective pipe 5 and the male and female coupling portions 10, 13 of the electric wire 6 can be connected respectively at the same time.

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