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11. 发明专利

JP2000064798A SEGMENT CONVEYOR FOR TUNNEL 失效
公开(公告)号：JP2000064798A
公开(公告)日：2000-02-29
申请号：JP23047798
申请日：1998-08-17
申请人： NITSUCHI KK
发明人： IRITANI YASUHIRO
IPC分类号： E21D11/40 , E21F13/02
摘要： PROBLEM TO BE SOLVED: To provide a segment conveyor for a tunnel, in which a hand is omitted and by which operation can be conducted efficiently and safely. SOLUTION: The segment conveyor has a winding machine and a segment gripping section 5 installed to a lifting-lowering block 4 lifted and lowered by the winding machine. The segment gripping section 5 has a screw shaft 21 with left-right reverse screw sections 20, 20, a motor 22 rotating the screw shaft 21, a pair of nut sections 23, 23 screwed to the left-right reverse screw sections 20, 20 respectively and a pair of chuck sections 24, 24 continuously connected to a pair of the nut sections 23, 23 respectively.

12. 发明专利

JP2938817B2 失效
公开(公告)号：JP2938817B2
公开(公告)日：1999-08-25
申请号：JP29736796
申请日：1996-10-17
申请人： NITSUCHI KK
发明人： ISHIDA KATSUHISA
IPC分类号： B66D3/26

13. 发明专利

JPH1046507A ROADBED COMPACTOR 失效
公开(公告)号：JPH1046507A
公开(公告)日：1998-02-17
申请号：JP22315596
申请日：1996-08-05
申请人： NITSUCHI KK
发明人： JINNO SHIGENORI
IPC分类号： E01B27/20
摘要： PROBLEM TO BE SOLVED: To provide a compactor by which work personnel can be reduced by mechanizing and automating ground compacting work of ballast of a roadbed of a railway and the working efficiency can be improved. SOLUTION: A roadbed compactor has a bogie 1 which has a driving part and travels on a pair of rails 2 and 2. A first vibrating pressurizing device 7 to compact the ground of an inside area of a pair of rails 2 and 2, second vibrating pressurizing devices 8 and 8 to compact the ground of an outside area of a pair of rails 2 and 2 and actuators 6... to raise and lower the first and the second vibrating pressurizing devices 7, 8 and 8, are also added to the bogie 1, and ballast inside and outside of the rails 22 is compacted by advancing one to several times by one to several times an interval between fastening bolts 29 and 29 to connect the rails 2 and a sleeper 3 to each other.

14. 发明专利

JPH0948591A LEVER TYPE TRACTION WINCH 失效
公开(公告)号：JPH0948591A
公开(公告)日：1997-02-18
申请号：JP21964295
申请日：1995-08-04
申请人： NITSUCHI KK
发明人： WADA TAICHI
IPC分类号： B66D3/14 , B66D1/04 , B66D1/54
摘要： PROBLEM TO BE SOLVED: To provide a lever type traction winch which can improve safety by eliminating a self-propelling phenomenon in the lowering direction by light load. SOLUTION: This winch is provided with a disc hub fixed on a pinion shaft 1, a disc nut 3 screwed onto a threaded part of the pinion shaft 1, a lever which can oscillate around the axial center on the pinion shaft 1, and a claw member 27 having a claw piece 25 for winding and a claw piece 26 for lowering which are fitted on the lever and are locked so as to be engaged and disengaged at protrusion and recess teeth 24 in the external circumference of the disc nut 3. The shape of the claw piece 25 for lifting is different from that of the claw piece 26 for lowering. An protrusion part contact point 31 of the claw piece 26 for lowering contacts roughly middle part of a side surface of a protrusion part 24a of the protrusion and recess teeth 24 of the disc nut 3. An angle of a straight line L1 orthogonal to a straight line L connecting a center line O of the disc nut 3 and the protrusion part contact point 31 of the claw piece 26 for lowering to a tangential line S of the claw piece 26 for lowering and the protrusion part 24a of the protrusion and recess teeth 24 is kept between 60 and 90 degrees.

15. 发明专利

JPH05132293A SMALL-SIZED TRACTION AND HOISTING MACHINE 失效
公开(公告)号：JPH05132293A
公开(公告)日：1993-05-28
申请号：JP32135091
申请日：1991-11-07
申请人： NITSUCHI KK
发明人： WADA TAICHI
IPC分类号： B66D3/14
摘要： PURPOSE:To rapidly perform switching operation between a braking state and an idling state while the braking state can be surely maintained in a neutral state of a switching piece. CONSTITUTION:An idling switching member 28 having a handle operation part 25 and spring support part 27 is attached to one end of a pinion shaft 1. A disc nut 13 is screwed on the pinion shaft 1 in a retractable manner with screw motion and the spring support part 27 is rotatively arranged inside a hole part 29 of the disc nut 13. A torsion coil spring 30 elastically energizing the disc nut 13 so as to rotate in the working direction of a brake mechanism 20 is interposed between the disc nut 13 and the spring support part 27. An engaging ball 37 capable of engaging/disengaging with/from a engaging notch 38 formed in the hole part 29 of the disc nut 13 and a spring elastically energizing the engaging ball 37 are provided in the spring support part 27.

16. 发明专利

JPH059358B2 失效
公开(公告)号：JPH059358B2
公开(公告)日：1993-02-04
申请号：JP19952488
申请日：1988-08-09
申请人： NITSUCHI KK
发明人： TOMOMATSU EISHIN
IPC分类号： B66D3/16 , B66D3/26

17. 发明专利

JPH04121397A ELECTRICALLY-OPERATED HOIST DEVICE 失效
公开(公告)号：JPH04121397A
公开(公告)日：1992-04-22
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
摘要： PURPOSE:To easily perform torque adjustment frown the outside further with small torque by interposing a friction gear through friction plates by a pair of retaining plates, and pressing the retaining plates by a non-contact unit pressed by a tapered part of a thread-provided torque adjusting shaft. CONSTITUTION:A friction gear 4, meshed with a motor output shaft 5, is mounted rotatably about an axial center l of a driven shaft 26 and interposed by a pair of retaining plates 10, 11 through friction plates 6. A point end of a driver is inserted into a recessed groove 41 in a point end of a torque adjusting shaft 1, and when it is screw-advanced, a non-contact unit 3 is pressed by a tapered part 2 to convert a direction of pressing force into a direction at a right angle. A holding disc 22 is pressed by the non-contact unit 3 to press an inner wheel 25a of a ball bearing 25 through a thrust bearing 24 and a peripheral protrusive streak 37 of the retaining plate 10, and the friction plate 6 of the retaining plate 10 is pressed to the friction gear 4. Since the retaining plate 11 is resiliently pressed by a reaction force resilient member 9, the retaining plate 11 is pressed to the friction gear 4 by reaction.

18. 发明专利

JPH03195695A TRACTION-WINDING DEVICE 失效
公开(公告)号：JPH03195695A
公开(公告)日：1991-08-27
申请号：JP33404789
申请日：1989-12-22
申请人： NITSUCHI KK
发明人： WADA TAICHI
IPC分类号： B66D3/14
摘要： PURPOSE:To prevent load falling at the time of a light load by setting the shape of a cam surface part so as to release each locking of a pair of nail pieces against the spring force of an elastic member in a nail piece facing condition of a cam one end part, and making switching via a locking condition. CONSTITUTION:A relative cam surface 36 is formed with a cam outer peripheral surface 33, the cam facing surface 34 of a winding nail piece 28, and the cam facing surface 35 of a lowering nail piece 29, and the rotation of a supporting axis 32 around the axis core of the relative cam 30 to oscillate each nail piece 28 and 29. One end of the supporting axis 32 to which the switching cam 30 is fixed is protruded to the front of a manual handle 23, and a switching lever is fixed to the end. The shape of the cam surface part 36 is set so as to release each locking of a pair of nail pieces 28 and 29 against the spring force of a spring member 31 in the nail piece facing condition of a cam one end part 37. The switching from winding operation to lowering operation or the reverse can be made by the switching lever's operation without via a racing condition where respective nail pieces 28 and 29 are not locked to an irregular tooth 27.

19. 发明专利

JPH02249895A IDLING DEVICE FOR TRACTION HOIST 失效
公开(公告)号：JPH02249895A
公开(公告)日：1990-10-05
申请号：JP7278089
申请日：1989-03-24
申请人： NITSUCHI KK
发明人： WADA TAICHI
IPC分类号： B66D3/14
摘要： PURPOSE:To actualize smooth transfer operation and system compaction by forming both outer and inner spring chambers with a hole part of an idling handle, and energizing a disk nut and this idling handle resiliently in both approaching and separating direction to and from a disk hub, respectively. CONSTITUTION:To obtain an idle condition, an idling handle is gripped by hand and a thread part 12 of a shaft is rotated to the backward direction of a screwed part of a disk nut 11, if so, this disk nut 11 separates from brake lining 14, so that a brake part 16 is releasable. A first spring 31 comes into a state of being yet more compressed in the idle, and thereby this resilient force becomes larger than a second spring 32, so that friction drag in the screwed part increases, and the disk nut 11 will not go nearer to the side of a disk hub 10 by dint of inertia, keeping the idle, and a quick return can be done freely.

20. 发明专利

JPS5943798A Preventive device for overload of traction hoisting device 失效
标题翻译：牵引装置过载预防装置
公开(公告)号：JPS5943798A
公开(公告)日：1984-03-10
申请号：JP15567282
申请日：1982-09-06
申请人： Nitsuchi Kk
发明人： NISHITSU MASAHIRO
IPC分类号： B66D3/14

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