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51. 发明专利

JP2001039674A REMOTE-CONTROLLED MOTOR HOIST DEVICE 失效
公开(公告)号：JP2001039674A
公开(公告)日：2001-02-13
申请号：JP21351199
申请日：1999-07-28
申请人： NITSUCHI KK , KASUGA ELECTRIC CO
发明人： ATSUNUSHI KAZUMASA , YASUI TOSHIYUKI , NOGAI TERUO , HIRATA NOBORU
IPC分类号： B66C13/40 , B66D3/20
摘要： PROBLEM TO BE SOLVED: To prevent a chattering of a relay at the time of operation of a remote controller from occurring with an inexpensive structure. SOLUTION: This device is formed so that, when a first pulse of an infrared signal S0 from a transmission circuit 23 of a remote controller 13 is input into a receiving circuit 24 of a light receiving unit 19A, a control circuit 26 outputs an ON instruction signal to a relay output circuit 28. By this, contacts 30 and 32 are turned on to operate an AC motor 33. In this case, ON state holding means 27 allows the output of the ON instruction signal to be continued forcibly for a specified time. Thus, a chattering resulting from a spark when the contact 32 is turned on can be prevented.

52. 发明专利

JP2001003302A TRACK CONSTRUCTION CRANE 失效
公开(公告)号：JP2001003302A
公开(公告)日：2001-01-09
申请号：JP17652799
申请日：1999-06-23
申请人： NITSUCHI KK
发明人： YAMADA ISAO , KAGAWA GISABURO
IPC分类号： E01B29/06
摘要： PROBLEM TO BE SOLVED: To provide a track construction crane capable of easily carrying out the movement of a load such as sleeper or the like by manual operation, ensuring a sufficient load space, horizontally holding it and having high work efficiency. SOLUTION: A track construction crane is equipped with a fixed frame 3 erected on a truck 2 capable of being traveled on a track, a fixed ceiling frame 4 provided at an upper position of the fixed frame 3, two parallel traveling rails 5 and 5 provided at lower positions of the fixed ceiling frame 4, girder rails 6 provided at lower positions the traveling rails 5 and 5 so as to make it possible to travel along the traveling rails 5 and 5, and hoists 7 provided at lower positions of the girder rails 6 so as to make it possible to travel along the girder rails 6.

53. 发明专利

JP2000064797A HOIST RAIL FOR TUNNEL WORK 失效
公开(公告)号：JP2000064797A
公开(公告)日：2000-02-29
申请号：JP23047698
申请日：1998-08-17
申请人： NITSUCHI KK
发明人： IRITANI YASUHIRO
IPC分类号： E21D11/40 , B61B13/06 , B66C7/02 , B66D3/26 , E21F13/02
摘要： PROBLEM TO BE SOLVED: To normally and reversely rotate the sprocket of a trolley hoist while engaging it and run it even on an upward and downward inclination and a curve by connecting a part between rails by a pivotal connection shaft upward and downward, right and left, and attaching a roller chain on a lower face. SOLUTION: The mutually adjacent rail bodies 2 of a hoist rail for tunnel work are mutually vertically and horizontally fluctuatingly connected by pivotal connection shafts 3, 4 through a rail joint 9 in the longitudinal direction. A gap 23 is provided between the other end 26 of the rail body 2 and the rail joint 9. A prescribed part in the plate 19 of a roller chain 6 is fixed on the lower face of the rail body 2 by a fixing member 17 so that a chain pin 18 is horizontally directed along the lower face 5 of the rail body 2. Thereby the roller chain 6 can cope with an inclination without being loosened on a plurality of the rail bodies 2 connected in the longitudinal direction. In addition, since the roller chain 6 has slight looseness in the horizontal direction, it can also cope with the case where a curve exists on the connected rail body 2.

54. 发明专利

JPH10218575A ELECTRIC HOIST 失效
公开(公告)号：JPH10218575A
公开(公告)日：1998-08-18
申请号：JP3712297
申请日：1997-02-04
申请人： NITSUCHI KK
发明人： ISHIDA KATSUHISA , YAMAGUCHI TATSUO
IPC分类号： B66D3/20 , B66D3/26
摘要： PROBLEM TO BE SOLVED: To provide an electric hoist that is simplified in its structure for its easier assembly and is used safely. SOLUTION: This electric hoist involves, in its frame 6, a motor, a load sheave rotated with the rotating force of the motor to wind a load chain 3 up, and a load chain guide 2 formed with a hole 4 in which the sheave is inserted and with a guide groove 5 for guiding the chain 3. The guide 2 is formed below the hole 4 with a guide projection piece 13 integrally and above the hole 4 with an axial recessed groove 18.

55. 发明专利

JPH0912283A CHAIN BLOCK 失效
公开(公告)号：JPH0912283A
公开(公告)日：1997-01-14
申请号：JP18865695
申请日：1995-06-29
申请人： FUJITA CORP , NITSUCHI KK
发明人： OKUUCHI EIJI , KONUKI MASATAKA , ADACHI KOICHI
IPC分类号： B66D1/54 , B66D3/20 , B66D3/24
摘要： PURPOSE: To prevent an overwinding limit handle from being broken also when it is used in a state where it is tilted in relation to the horizontal, by forming a pair of projecting parts on the parts to a supporting shaft of an opening part of the overwinding limit handle at a distance a little larger than the size of a steel for constituting a chain in the extending direction of the supporting shaft. CONSTITUTION: In an overwinding limit handle 12, a cross-shaped groove 30 through which a chain is made to pass is formed on one end in the longitudinal, direction, and an opening part 32 through which a chain suspended from the other end of the upper half part of a load sheave is made to pass is formed on the other end. The opening part 32 is constituted of a rectangular frame 38 composed of a pair of short sides 34 faced to each other in parallel with a supporting shaft 12A of the overwinding limit handle 12 and a pair of long sides 36, and projecting parts 40 are formed on both sides of the short sides 34 to the supporting shaft 12A of the overwinding limit handle 12 at a distance a little larger than the size of a steel for constituting a chain ring. Damage of the overwinding limit handle is prevented by enhancing the strength of the rectangular frame 38.

56. 发明专利

JP2551897B2 失效
公开(公告)号：JP2551897B2
公开(公告)日：1996-11-06
申请号：JP16409992
申请日：1992-05-28
申请人： NITSUCHI KK
发明人： MAKIURA HITOAKI , YAMAMOTO SHUJI
IPC分类号： B66C17/04 , B66C1/06 , B66C17/06 , B66C19/00 , B66C23/46

57. 发明专利

JPH08282960A BAGGAGE HANGING HOOK 失效
公开(公告)号：JPH08282960A
公开(公告)日：1996-10-29
申请号：JP11022295
申请日：1995-04-10
申请人： NITSUCHI KK
发明人： WADA TAICHI
IPC分类号： B66C1/34 , B66C1/36 , F16B45/00
摘要： PURPOSE: To provide a baggage hanging hook wherein replacement period coming can be easily further surely known. CONSTITUTION: Opening dimension L of an opening part 7a is set equal to or smaller than internal diametric dimension D in the center part. The opening dimension L is the dimension between the center of the first measuring point provided in a hook tip end side and the center of the second measuring point provided in a hook base end part.

58. 发明专利

JPH06286982A TRACTION WINDING DEVICE 失效
公开(公告)号：JPH06286982A
公开(公告)日：1994-10-11
申请号：JP10021993
申请日：1993-04-02
申请人： NITSUCHI KK
发明人： WADA TAICHI
IPC分类号： B66D3/14
摘要： PURPOSE:To provide a traction winder which is designed to perform reliable holding of an idling state and a non-idling state and effect simple switching to each state. CONSTITUTION:A twist spring 28 to exert a rotation force in the release direction of a brake on a disc nut 14 is located between the disc nut 14 and an idle grip 26. A press spring 29 to press the idle grip 26 to the disc nut 14 side is located between a spring support 27 fixed to the end part of a shaft 1 and located internally of the idle grip 26 and the free grip 26. The thrust in axial direction of the press spring 29 is set to a value higher than that of the twist spring 28. Under a brake state, holding is practicable through the resilient force of the spring 29.

59. 发明专利

JPH0624687A OUTRIGGER TYPE CRANE 失效
公开(公告)号：JPH0624687A
公开(公告)日：1994-02-01
申请号：JP16409992
申请日：1992-05-28
申请人： NITSUCHI KK
发明人： MAKIURA HITOAKI , YAMAMOTO SHUJI
IPC分类号： B66C17/04 , B66C1/06 , B66C17/06 , B66C19/00 , B66C23/46
摘要： PURPOSE:To provide an outrigger type crane useful for making rod replacement work in a rod mill safe and easy. CONSTITUTION:This crane is provided with a frame 2 in which a horizontal rail 1 is fixed to a support frame 11; a mobile rail 3 suspended from the horizontal rail 1 to be able to travel and project; a drive device 4 for traveling of the mobile rail 3, interposed between the mobile rail 3 and the horizontal rail 1; a retaining member 5 arranged on a tip side of the mobile rail 3 and detachably retaining an object to be carried; a hoisting device 6 attached to a base end side of the mobile rail 3; and a flexible traction body 7 for interlockingly connecting the hoisting device 6 to the retaining member 5 so as to lift the retaining member 5 by means of the hoisting device 6.

60. 发明专利

JPH064478B2 失效
公开(公告)号：JPH064478B2
公开(公告)日：1994-01-19
申请号：JP24175190
申请日：1990-09-11
申请人： NITSUCHI KK
发明人： ADACHI KOICHI
IPC分类号： B66D3/20 , B66D1/58

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