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11. 发明专利

JPH03158373A POWER UNIT FOR HYDRAULIC ELEVATOR 失效
公开(公告)号：JPH03158373A
公开(公告)日：1991-07-08
申请号：JP29465689
申请日：1989-11-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKIGAWA YUKIHIRO , KAMIYA YOSHIO , USHIDA HIROSHI , MIYAKE TATSUO , SHIMOAKI MOTOO
IPC分类号： B66B9/04
摘要： PURPOSE:To enable inspection to be made without removing working oil by making both of the electric motor and the hydraulic pump of a power unit rotatable from each set position of them to each inspection position over the surface of working oil, and thereby suspending them at the respective positions of them by suspension means. CONSTITUTION:An electric motor 3 and a pump 7 immersed in oil within an oil tank 1 are mounted onto a shaft 18 by means of a support fixture 19 attached onto an electric motor frame 3a, and are suspended by a hook fitting 21 at each set position by means of a suspension fixture 20. At the time of maintenance and inspection, a flow rate control valve 10 is removed with a pipe connector 11 released, the suspension fixture 20 is removed from the hook fitting 21, and the motor 3 and the pump 7 are rotated around the shaft 18 so that they are vertically positioned for inspection over the surface 2 of working oil. The suspension fixture 20 is then mounted onto a hook fitting 22 so as to be suspended at a position for inspection. This thereby enables maintenance and inspection to be made above working oil 2 without removing working oil 2, thereby preventing working oil 2 from being wasted while working time can also be shortened.

12. 发明专利

JPH03147693A POWER UNIT OF HYDRAULIC ELEVATOR 失效
公开(公告)号：JPH03147693A
公开(公告)日：1991-06-24
申请号：JP28204189
申请日：1989-10-31
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAMIYA YOSHIO , USHIDA HIROSHI , MIYAKE TATSUO , TAKIGAWA YUKIHIRO , SHIMOAKI MOTOO
IPC分类号： B66B9/04
摘要： PURPOSE:To reduce the necessary space for a power unit and facilitate maintenance and inspection by immersing a driving source and a hydraulic pump into the working oil in an oil tank and forming an opened port part on one side part of the upper surface of the oil tank. CONSTITUTION:An electric motor 1 as driving source, hydraulic pump 2, etc., are immersed into working oil 12 stored in an oil tank 11, and also a hydraulic valve 3 is housed in the oil tank 11. An opened port part 11b having a demountable cover 11a in the front upper part is formed in the oil tank 11. Since the driving source and the hydraulic pump are immersed in the working oil, the troubles of oil exhaustion and oil leak are prevented, and since also the hydraulic valve is set in the oil tank, the care for the oil leak is not required. Further, since the opened port part is formed on one side part of the upper surface of the oil tank, the need of maintenance and inspection from the back surface or side surface is obviated, and further since a power unit is immersed into the tank, space can be reduced drastically.

13. 发明专利

JPH03115083A POWER UNIT FOR HYDRAULIC ELEVATOR 失效
公开(公告)号：JPH03115083A
公开(公告)日：1991-05-16
申请号：JP25208389
申请日：1989-09-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOAKI MOTOO , KAMIYA YOSHIO , TAKIGAWA YUKIHIRO , USHIDA HIROSHI , MIYAKE TATSUO
IPC分类号： B66B9/04 , B66B1/24 , B66B1/26
摘要： PURPOSE:To prevent operation errors of a detector with its detecting part prevented from being immersed in infiltrated operating fluid by providing a leak oil port formed in a case bottom surface of the detector and a leak oil reservoir connected to this leak oil port. CONSTITUTION:A detector 10, connected to a shaft end 3a of an electric motor, is formed in an oil-tight type by applying an oil seal 11 to a rotary part 10 with an O ring 12 interposed between a case 10b and a bearing part 10c, and an oil passage 14 is formed in the bearing part 10c. While a leak oil port 15 is provided in a bottom part of the case 10b and connected to a leak oil reservoir 16 by a connection pipe 15a. By this constitution, since operating fluid, infiltrated from the bottom surface of the case 10b, is discharged so as to prevent a detection part 13 from being immersed in the operating fluid even when its amount, infiltrated into the detector 10, is increased, misoperation of the detector 10 is prevented. While by forming the leak oil reservoir 16 in larger volume than the detector 10, it can cope with even an increase of operating fluid in its infiltrating amount.

14. 发明专利

JPH0318585A HYDRAULIC POWER UNIT FOR HYDRAULIC ELEVATOR 失效
公开(公告)号：JPH0318585A
公开(公告)日：1991-01-28
申请号：JP15056589
申请日：1989-06-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAMIYA YOSHIO , USHIDA HIROSHI , MIYAKE TATSUO , SHIMOAKI MOTOO , TAKIGAWA YUKIHIRO , KAMAIKE HIROSHI
IPC分类号： B66B9/04 , B03C1/28 , B66F7/16 , F15B21/04
摘要： PURPOSE:To prevent the intrusion of the iron group material into an electric motor by installing a magnetic body which attracts the iron group material contained in working oil, into the working oil and by attracting the dusts and sludge of the iron group material by the magnetic body. CONSTITUTION:A magnetic body 13 which attracts iron group material is installed in an oil tank 1. Therefore, in the hydraulic power unit of a hydraulic elevator, the dusts and sludge of the iron group material which are mixed into the oil tank 1 are attracted by the magnetic body 13, and held. Thus, the intrusion of the iron group material into an electric motor 3 is prevented, and the breakage of the electric motor is prevented.

15. 发明专利

JPH0313482A POWER UNIT FOR HYDRAULIC ELEVATOR 失效
公开(公告)号：JPH0313482A
公开(公告)日：1991-01-22
申请号：JP14646389
申请日：1989-06-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： USHIDA HIROSHI , KAMIYA YOSHIO , TAKIGAWA YUKIHIRO , MIYAKE TATSUO , SHIMOAKI MOTOO
IPC分类号： B66B9/04 , F15B1/00
摘要： PURPOSE:To prevent the interior of a control panel from being soiled or damaged by the scattering of oil by fitting a tank lid in such a way as to be opened by turning its rear side around an axis and providing a control panel lid in such a position as to be opened only when the tank lid is in the closed state. CONSTITUTION:When a tank lid 38 is opened for the maintenance-inspection of the motor 12 and hydraulic pump 14 in an oil tank 34, the tank lid 38 is turned by a hinge 42 at the rear side and brought into contact with the stopper 44 of a control panel lid 40. Not only the control panel 40 has to remain closed but also the interior of a control panel 24 is doubly covered by the control panel lid 40 and tank lid 38. Accordingly, even if the oil in the oil tank 34 scatters out of the opened tank lid 38, this oil can hardly pass through both the tank lid 38 and control panel lid 40 to enter into the control panel 24, thus preventing the immersion of oil into the control panel 24. The interior of the control panel 24 is therefore prevented from being soiled or damaged.

16. 发明专利

JPH02295872A HYDRAULICALLY-OPERATED ELEVATOR 失效
公开(公告)号：JPH02295872A
公开(公告)日：1990-12-06
申请号：JP11670489
申请日：1989-05-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： MIYAKE TATSUO , KAMIYA YOSHIO , TAKIGAWA YUKIHIRO , USHIDA HIROSHI , SHIMOAKI MOTOO
IPC分类号： B66B1/26 , B66B1/04 , B66B5/02 , B66B9/04 , F15B11/02 , F15B11/04 , F15B20/00
摘要： PURPOSE:To prevent a secondary trouble, caused by generation of a negative pressure in a pipe line, by actuating an abnormality control device through action of a pressure detector, when a pipe line pressure between an opening and closing valve and an oil hydraulic pump is decreased to not more than a predetermined value, so as to deenergize a pump motor. CONSTITUTION:In the case of energizing an electric motor 4 by a down- operation command while a cage 1 is in lowering or stopping, abnormality, in which the electric motor 4 is continued to rotate in a condition that an open ing and closing valve 5 is left as closed by any trouble, is sometimes generated. At the time of abnormality thus generated, a pressure in a pipe line is decreased, but when the pressure reaches not more than a predetermined value, a contact 8a is opened by actuating a pressure detector 8. Consequently, a contact 10 is opened by energizing a pressure relay 10 through a circuit of (+)-8a-10-(-). By deenergizing the electric motor 4 through opening of the contact 10a, genera tion of troubles such as abnormal vibration, seizure of equipment sliding part, etc., caused by generating cavitation due to a negative pressure of the pipe line can be prevented, thus a hydraulically-operated elevator of high safety can be obtained.

17. 发明专利

JPS51139044A ELEVATOR DEVICE 失效
公开(公告)号：JPS51139044A
公开(公告)日：1976-12-01
申请号：JP6280475
申请日：1975-05-26
申请人： MITSUBISHI ELECTRIC CORP
发明人： MIURA NOBUYUKI , TAKIGAWA YUKIHIRO
IPC分类号： B66B7/00 , B66B11/08
摘要： PURPOSE:Even if the wind-up machine is mounted at the side place of the elevating pit of the elenator device, the loading point to such building members as the elevating pit is alleviated.

18. 发明专利

JP2004238151A Installation method for elevator 审中-公开
公开(公告)号：JP2004238151A
公开(公告)日：2004-08-26
申请号：JP2003029575
申请日：2003-02-06
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TAKIGAWA YUKIHIRO
IPC分类号： B66B7/00 , B66B11/00
摘要： PROBLEM TO BE SOLVED: To provide an installation method for an elevator for facilitating installation work to improve work efficiency even when driving power supply of a hoisting machine is not ensured.
SOLUTION: After installing a car guide rail 5 and a balance weight guide rail 6 in a shaft 1, a main rope 11 is wound around a driving sheave 9a of the hoisting machine 9, and a traveling work floor 12 and a balance weight 13 are suspended in the shaft 1 by the main rope 11 to lift and lower the traveling work floor 12 along a rope 30 for installation by a manually operating crane device 31 while releasing a brake device of the hoisting machine 9 in order to perform installation work of equipment in the shaft by a worker on the traveling work floor 12.
COPYRIGHT: (C)2004,JPO&NCIPI

19. 发明专利

JP2002284469A ELEVATOR CAR DEVICE 失效
公开(公告)号：JP2002284469A
公开(公告)日：2002-10-03
申请号：JP2001084159
申请日：2001-03-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKIGAWA YUKIHIRO
IPC分类号： B66B5/00 , B66B11/02
摘要： PROBLEM TO BE SOLVED: To provide an elevator car device allowing the fall-down arrangements of a plurality of maintenance handrails installed on the upper face of the car to be detected by a less number of detectors. SOLUTION: A one-side handrail 9 is pivotally mounted at the edge on one side of the upper part of the car 4 in such a manner as to be normally put in fall-down arrangement and erected as required. The other-side handrail 10 is pivotally mounted at the edge on the other side opposed to one side of the upper part of the car 4 in such a manner as to be normally put in fall-down arrangement and erected as required. The detector 16 is provided on the one-side handrail 9 and an engagement tool 19 is connected to the other-side handrail 10 via a connector 18. The engagement tool 19 is put in engagement with the detector 16 via both fall-down arrangements of the one-side handrail 9 and the other-side handrail 10 with manual operation to actuate the detector 16. Thus, both fall-down arrangements are detected by the actuation of one detector 16, resulting in cost saving in relation to the detector 16 and less manufacturing cost.

20. 发明专利

JPH09110338A HYDRAULIC ELEVATOR DEVICE 失效
公开(公告)号：JPH09110338A
公开(公告)日：1997-04-28
申请号：JP26888895
申请日：1995-10-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： MIYAKE TATSUO , TAKIGAWA YUKIHIRO
IPC分类号： B66B9/04
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic elevator device in which a hydraulic circuit is constituted by providing a control function for ascent and a control function for descent of a car in one open and close valve. SOLUTION: An open-and close valve 5 which is opened when a car 2 runs and is closed when the car 2 stops is provided. Moreover, the rotation of a motor 4 which drives a hydraulic pump 3 is controlled by a controller 13 to change discharge flow rate of the hydraulic pump 3 and control lift operation of the car 2 engaged with a hydraulic jack, and the rotation of the motor 4 is controlled to control discharge flow rate of hydraulic oil in the hydraulic jack and control descent operation of the car 2. Moreover, an ascent control valve element 5e which is opened when the pressure of the hydraulic pump 3 exceeds the pressure of the hydraulic jack 1 to communicate the hydraulic pump 3 with the hydraulic jack is provided in the open and close valve 5.

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