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51. 发明专利

JPH05296628A 失效
公开(公告)号：JPH05296628A
公开(公告)日：1993-11-09
申请号：JP12972392
申请日：1992-04-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： OISHI YOSHIHIRO , HYODO KAZUYA
IPC分类号： F25C3/04
摘要： PURPOSE:To provide an economical snow maker which can operate stably with little infuence of atmospheric conditions such as temperature and humidity so that its nozzle is not frozen. CONSTITUTION:In a snow gun in which snow is made by mixing compressed air and cool water and jetting the mixture out of a nozzle 1, a cool air chamber 9 is provided at a tip end of the nozzle 1 to circulate cool air taken out of a vortex tube 15 for cooling waterdrops compulsorily. Warm air taken out of the vortec tube 15 is circulated to prevent freezing of the nozzle 1.

52. 发明专利

JPH0563591B2 失效
公开(公告)号：JPH0563591B2
公开(公告)日：1993-09-10
申请号：JP572787
申请日：1987-01-13
申请人： CATERPILLAR MITSUBISHI LTD , MITSUBISHI HEAVY IND LTD
发明人： AWANO KATSUSUKE , HYODO KAZUYA
IPC分类号： E04G23/08

53. 发明专利

JPH0598889A UNDERGROUND OBSTACLE DISASSEMBLING DEVICE 失效
公开(公告)号：JPH0598889A
公开(公告)日：1993-04-20
申请号：JP25783791
申请日：1991-10-04
申请人： MITSUBISHI HEAVY IND LTD
发明人： OISHI YOSHIHIRO , HYODO KAZUYA
IPC分类号： E21D9/06 , E21D9/08
摘要： PURPOSE:To reduce the period of construction, and to prevent the collapse and slackening of circumferential ground, and also to prevent the damage of sound parts due to vibration at the time of disassembling work. CONSTITUTION:An angle adjustment hydraulic jack 4 is operated in the extension/ contraction directions, so that a frame 11 is oscillated with a pivotally supporting link 12 as a center for adjusting the angle of the frame 11. Then, a ball valve 13 (not shown) for preventing the inflow of stones and sand and water is opened, and a rod-feeding hydraulic jack 5 is operated for moving an extension type rod 7 forward. And the foremost end thereof is penetrated into the ground at the front through the opening 15 (not shown) that has been provided to a cutter-supporting shaft 3 and through the opening 16 (not shown) that has been provided to a turning member 1 having a cutter 2, and a conical cone 6 having a water-jet nozzle 19 (not shown) is positioned obliquely in front of an obstacle. Then, a water-jet producing pump 10 is started, and pressurized water is jetted obliquely rearwards as a water jet against an obstacle 20 (not shown) via a flexible hose 9, a swivel joint 8, the hollow extension type rod 7, the pressure water passage inside the conical cone 6, and a nozzle 19 (not shown) for cutting the obstacle 20. At that time, most of the jetted pressure water is collected inside the cutter chamber 2 through the opening 16 of the turning member 1.

54. 发明专利

JPH04265395A ROCK-BED EXCAVATING DEVICE 失效
公开(公告)号：JPH04265395A
公开(公告)日：1992-09-21
申请号：JP2463991
申请日：1991-02-19
申请人： MITSUBISHI HEAVY IND LTD , KORYO ENG KK
发明人： HYODO KAZUYA , ARIKAWA KIWAMU , KAJITANI YOSHIKAZU
IPC分类号： E21D9/087 , E21D9/08 , E21D9/10 , E21D9/12
摘要： PURPOSE:To obviate the need to exert a high rotation force and press force on a rotary shaft when a rigid rock-bed is excavated, to prevent early wear of a cutter bit and in its turn eliminate a need for frequent exchange, and to prevent the occurrent of a crack to a bed-rock around an excavating part. CONSTITUTION:An excavating device 2, excavation by which is carried out by means of cutter bits 3, is pressed against a facing 4 through a rotary shaft 1 and meanwhile, the rotary shaft 1 and the excavating devices 2 and the bits 3 are rotated. In this case, the facing 4 is irradiated with laser beams 10 from laser irradiating devices 12a, 12b, 8, and 9 rotated around the rotary shaft 1 to produce a brittle part 11 at the facing 4. The brittle part 11 is excavated by the rotating excavating devices 2 and 3, and muck 5 produced at a current time is discharged from the rear of the rock-bed excavating device to the outside of a shaft by means of a screw conveyor 6.

55. 发明专利

JPH04147939A SINTERED HARD ALLOY AND ITS MANUFACTURE 失效
公开(公告)号：JPH04147939A
公开(公告)日：1992-05-21
申请号：JP26943790
申请日：1990-10-09
申请人： MITSUBISHI HEAVY IND LTD , SUTAAROI SANGIYOU KK
发明人： YAMAMOTO YUTAKA , HYODO KAZUYA , OKAMOTO KAZUYUKI , MOTONAMI SHIGERU
IPC分类号： C22C29/08 , B22F3/14 , B22F3/15 , C22C1/05
摘要： PURPOSE:To manufacture a sintered hard alloy excellent in both hardness and toughness by using Co or Co and Ni as a bond for particulate hard WC, subjecting this mixed raw material to compacting and sintering and thereafter executing hot isostatic pressing. CONSTITUTION:As a hard phase, by weight, 80 to 90% particulate hard WC with pressure X1300 to 1400 deg.C temp. with an Ar gas as a pressure medium. Or, the powder green compact is simultaneously subjected to sintering and hot isostatic pressing under the conditions at 60 to 100kg f/cm pressure X 1300 to 1400 deg.C temp. with an Ar gas as a pressure medium. The sintered hard alloy excellent in hardness, deflective strength and toughness as well as excellent in wear resistance and chipping resistance can be manufactured.

56. 发明专利

JPH03249089A CONVEYOR 失效
公开(公告)号：JPH03249089A
公开(公告)日：1991-11-07
申请号：JP4111390
申请日：1990-02-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： HYODO KAZUYA
IPC分类号： B66B21/08 , B66B23/12
摘要： PURPOSE:To aim at the travelling on a curved rail by combining a rear step having the top face of which front edge is semi-circular and a front step having the top face of which recessed rear edge is to be engaged with the semi-circle of the rear step to unify them with a pin and a long hole, and supporting the front step side with rollers, and while providing a weight. CONSTITUTION:A rear step 12 having the top face which consists of a linear rear edge and a semi-circular front edge and having the cylindrical rear face and a front step 11 having the top face which consists of the linear front edge and the recessed rear edge to be engaged with the semi-circular edge of the rear step 12 and having the cylindrical front face are provided. Both the steps 11, 12 are unified with a pin 14 and a long hole 15 so that they can turn mutually. A weight 8 is through a rod 13 fixed in the lower of the front step 11 so as to keep the top face horizontal, and a conveyor is travelled along the bending direction of a guide rail 7 for guiding rollers 6 provided in both sides of the front step 11.

57. 发明专利

JPH03183892A CORE CUTTER 失效
公开(公告)号：JPH03183892A
公开(公告)日：1991-08-09
申请号：JP32067989
申请日：1989-12-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： HYODO KAZUYA , ISHISE FUMIHIKO , KOBAYASHI TOSHIRO
IPC分类号： E21B10/02
摘要： PURPOSE:To make it possible to maintain the edge of a cutter bit normally in a state of sharpness by providing two inclined surfaces on the rear surface of the cutter bit, and switching the cutter bit from a cutting state to a grinding state to make it possible to hold the cutter bit. CONSTITUTION:A cutter bit 2 is supported on the front end of a casing tube 1 so that it is capable of turning. After that, two inclined surfaces 14 and 16 are provided on the rear surface of the cutter bit 2, and they are selectively brought into contact with the front end of the casing tube 1 by forward and reverse rotation of the casing tube 1, and the cutter bit 2 can be switched from a cutting state to a grinding state. When operation is continued in a cutting state to deteriorate the sharpness of the edge of the cutter bit, the casing tube 1 is reversed to change in a grinding state, and the cutter bit 2 is ground. According to the constitution, a cheap superhard alloy cutter bit can be used, and a running cost can be reduced.

58. 发明专利

JPS63176569A PARTIAL DISASSEMBLING CONSTRUCTION METHOD OF CONCRETE STRUCTURE 失效
公开(公告)号：JPS63176569A
公开(公告)日：1988-07-20
申请号：JP572787
申请日：1987-01-13
申请人： CATERPILLAR MITSUBISHI LTD , MITSUBISHI HEAVY IND LTD
发明人： AWANO KATSUSUKE , HYODO KAZUYA
IPC分类号： E04G23/08

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