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1. 发明专利

JPH07317477A DRILLING DEVICE 失效
公开(公告)号：JPH07317477A
公开(公告)日：1995-12-05
申请号：JP11272294
申请日：1994-05-26
申请人： NIPPON STEEL CORP , ISHIKAWAJIMA HARIMA HEAVY IND , KUMAGAI GUMI CO LTD , EBARA CORP
发明人： HAYASHIDA MICHIYA , YOKOYAMA ISAO , TAGO YUICHI , SAKAI YUKIO , HAYASHI NORIMASA , ONISHI TAKESHI , TAKAGI KIYOKAZU , ONO TAKASHI
IPC分类号： E21B7/04 , E21B7/18
摘要： PURPOSE:To conduct rectilinear propagative drilling easily by mounting a dril with a bit on the end face of a nozzle head installed to a shaft and forming a jet at a place, where the ultrahigh pressure water of the drill does not interfere in bit blades. CONSTITUTION:A nozzle 11 is set up to the front section of a nozzle head 10, and connected to an ultrahigh pressure water supply source by an ultrahigh pressure water path 12. The nozzle 11 is connected to a pressure-air supply source from a pressure air path 13, and drilling is performed by a water jet while blowing out pressure air from a pressure-air blow-off port 25. A drill 20 with a bit is fixed onto the nozzle head 10 by four bolts 14, a guide hole is drilled on an axis by a drill 21, and cutting and drilling are carried out by the water jet from a jet 24. The drill 20 with the bit is placed at a frontest end and the drill 21 bores the guide hole at that time, and the whole drilling device is borne, thus constantly holding the direction of drilling in the rectilinear propagative direction.

2. 发明专利

JPH06346676A DRILLING MACHINE 失效
公开(公告)号：JPH06346676A
公开(公告)日：1994-12-20
申请号：JP13594193
申请日：1993-06-07
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP , KUMAGAI GUMI CO LTD , EBARA CORP
发明人： NASU TOSHIYUKI , YOKOYAMA ISAO , TAGO YUICHI , HAYASHIDA MICHIYA , SEKIGUCHI RYUICHI , SAKAI YUKIO , SHIMAZAKI KEISUKE , HARADA KAZUAKI , ONO TAKASHI , ONISHI TAKESHI , TAKAGI KIYOKAZU
IPC分类号： E21B7/04 , E21B7/18
摘要： PURPOSE:To execute drilling work under stabilized and uniform state by attaching an outer tube to a driving motor of a drilling machine through supports and by jetting water jet through a nozzle. CONSTITUTION:An outer tube 8 is attached to the outside of a driving motor 2 through a plurality of supports 7, and end edge 8a of the outer tube is positioned in front of a nozzle 1. When drilling a bore, water jet 4 is ejected through a nozzle 1 while the nozzle is driven in revolution by the driving motor 2, and a drilling machine A is thrust forward with a propelling device. The drilling machine is moved forward continuously at a speed corresponding to the drilling speed by the water jet 4, and excavated earth is allowed to flow, together with the jetting water, to a bore 6 through a gap between the internal wall of the outer tube 8 and the outer circumference of the driving motor 2, and is furthermore discharged to the outside. Thereby, the drilled bore 6 is made in a uniform size slightly larger than the external size of the outer tube 8, and the drilling is made stably without being influenced by self-weight of the drilling machine even in the case of horizontal drilling.

3. 发明专利

JPS63318306A MOUNTING STRUCTURE TO SHAFT OF BRITTLE MATERIAL SLEEVE FOR BEARING 失效
公开(公告)号：JPS63318306A
公开(公告)日：1988-12-27
申请号：JP15021087
申请日：1987-06-18
申请人： EBARA CORP
发明人： AIYOSHIZAWA SHIYUNICHI , TAKAGI KIYOKAZU , WAKUKAWA TOMOHIRO
IPC分类号： F16B3/00

4. 发明专利

JPH07290003A WASHER 失效
公开(公告)号：JPH07290003A
公开(公告)日：1995-11-07
申请号：JP8484394
申请日：1994-04-22
申请人： EBARA CORP
发明人： TANAKA MANABU , YOKOTA TOMIO , TAKAGI KIYOKAZU
IPC分类号： B08B3/02
摘要： PURPOSE:To perform effective washing in a short time by rotating an object to be washed forcibly or by a jet flow, further using a rotary nozzle or a rotating and oscillating nozzle to intermittently and repeatedly give impact force to the object to be washed. CONSTITUTION:To the lower end of an output shaft 2a of a rotating device 2 such as a motor with a reduction gear, a wash part 1a of an object to be washed 1 is fixed downwards. Below the object to be washed 1, an jet tip 10a of a rotary nozzle 10 is installed upwards at a prescribed distance D. The rotary nozzle 10 is rotated by a driver 11, and also the object to be washed 1 is rotated by the rotating device 2. While a rotating high pressure water jet flow J is injected from the rotary nozzle 10 in this state, the rotary nozzle 10 is horizontally moved by a rack-and-pinion type horizontal movement device 13 within the area corresponding to the wash part 1a. In this way, the high pressure water jet flow J is made to hit the wash part 1a intermittently and repeatedly to perform effective washing by its impact force.

5. 发明专利

JP2003129166A CORROSION RESISTANT CERMET AND PUMP PARTS 审中-公开
公开(公告)号：JP2003129166A
公开(公告)日：2003-05-08
申请号：JP2001324790
申请日：2001-10-23
申请人： EBARA CORP
发明人： TAKAYAMA HIROKAZU , TAKAGI MASATOSHI , SENDO TSUTOMU , TAKAGI KIYOKAZU , SUGIYAMA KAZUHIKO
IPC分类号： F04D29/02 , B22F5/00 , B22F5/12 , C22C29/10 , F04D7/06 , F04D29/04 , F04D29/046 , F04D29/22 , F04D29/42
摘要： PROBLEM TO BE SOLVED: To provide a corrosion resistant cermet, which has adequate abrasion resistance and corrosion resistance even when used as sliding parts used in sea water, and has improved durability, and provide pump parts using the same. SOLUTION: This cermet consists of a sintered compact which comprises 90-70% TiC as a high hardness material and 10-30% Ti-Mo alloy as a binding material, by mass content ratio, wherein a mass ratio of Mo in the Ti-Mo alloy (Mo/(Ti-Mo)) is preferably 18-22%.

6. 发明专利

JPH05309347A 失效
公开(公告)号：JPH05309347A
公开(公告)日：1993-11-22
申请号：JP14366792
申请日：1992-05-11
申请人： EBARA CORP
发明人： ONO TAKASHI , TAKAGI KIYOKAZU , ENDO KAORU , YAMAZAKI YUKIHIRO
IPC分类号： B08B3/02
摘要： PURPOSE:To obtain a cleaning device which is capable of cleaning, draining and drying in a booth automatically and ensures an economical operation and energy saving. CONSTITUTION:The subject cleaning device consists of a nozzle unit 8 of liquid jet nozzles for cleaning 5 and air ejection pipes 6 for draining and drying, a nozzle unit lifting device and a nozzle unit running device, flexible hoses 31, 32 for supplying a liquid and air to the nozzle unit, and a hose transport device.

7. 发明专利

JPH028513A SLIDING BEARING 失效
公开(公告)号：JPH028513A
公开(公告)日：1990-01-12
申请号：JP3966088
申请日：1988-02-24
申请人： EBARA CORP
发明人： KONNO DAISUKE , TAKAGI KIYOKAZU , WAKUKAWA TOMOHIRO , AIYOSHIZAWA SHIYUNICHI
IPC分类号： F16C17/02 , F16C27/02
摘要： PURPOSE:To eliminate an excessive amount of space sufficiently absorbing external force and vibration by providing a cushion member, consisting of elastic material, between a bearing case and a bearing side sliding member further containing it in a recessed part formed in this cushion member. CONSTITUTION:A sleeve 24 made of hard brittle material is fitted to a shaft 22. A cushion member 28 is provided between a bearing case 34 and a bearing side sliding member 26. The cushion member 28, having in its internal peripheral surface a recessed part 30, coats the bearing side sliding member 26 in its both end parts in the axial direction in this recessed part 30. The bearing side sliding member 26 is fixed in radial and axial directions by the cushion member 28. Thus, external force and vibration can be sufficiently absorbed to a bearing.

8. 发明专利

JPH01312222A SLIDING BEARING 失效
公开(公告)号：JPH01312222A
公开(公告)日：1989-12-18
申请号：JP9882789
申请日：1989-04-20
申请人： EBARA CORP
发明人： KONNO DAISUKE , TAKAGI KIYOKAZU , WAKUKAWA TOMOHIRO , AIYOSHIZAWA SHIYUNICHI
IPC分类号： F16C27/06 , F16F15/04
摘要： PURPOSE:To obtain a compact sliding bearing which can absorb and attenuate sufficiently external force and oscillations to be exerted by adopting hard fragile material as a sliding member of a sliding bearing, arranging a buffer member between a bearing case and a bearing side sliding member, and forming through- holes on a buffer member piercing axially thereof. CONSTITUTION:A sleeve 24 made of a hard fragile material such as ceramic or superhard alloy is fitted as a shaft side sliding member to a shaft 22 of a sliding bearing 20. The sleeve 24 is arranged mutually slidably with a bearing side sliding member made of the hard fragile material such as ceramic or superhard alloy, that is, a bearing 26. The bearing 26 is press-fitted to a recessed part 30 of a buffer member 28 made of vulcanized rubber. A plurality of axial through-holes 32 are formed on the buffer member 28 circumferentially and with equal intervals. External force and oscillations to be exerted are therefore sufficiently absorbed and attenuated by the buffer member, and the deformation rate is increased, so that the whole of the sliding bearing can be miniaturized.

9. 发明专利

JPS63170598A IMPELLER SLIDE DEVICE OF VERTICAL PUMP 失效
公开(公告)号：JPS63170598A
公开(公告)日：1988-07-14
申请号：JP31564486
申请日：1986-12-29
申请人： EBARA CORP
发明人： TAKAGI KIYOKAZU , KONNO DAISUKE , WAKUKAWA TOMOHIRO , AIYOSHIZAWA SHIYUNICHI
IPC分类号： F04D29/22 , F04D29/04 , F04D29/046 , F04D29/66
摘要： PURPOSE:To suppress vibration of a shaft by assembling an impeller slide part in such a manner that the rotor is previously located eccentrically to the liner ring, and by making the gap of the impeller slide part uneven. CONSTITUTION:Gap between a liner ring 8 and a wear ring 209 shall be uneven, wherein the latter is installed at the rear of the rear face shroud 16a of an impeller 16. The lefthand gap CR1 is given a greater value than the righthand gap CL1 by arranging the pump shaft 4 eccentrical to liner rings 8, 9. Thus the direction of the load on a rotor is made always constant by the pressure difference generated at the impeller slide part, and thereby shaft vibration can be suppressed.

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