EP1514825B1 - Elevator hoisting machine - Google Patents

Elevator hoisting machine Download PDF

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Publication number
EP1514825B1
EP1514825B1 EP02741218A EP02741218A EP1514825B1 EP 1514825 B1 EP1514825 B1 EP 1514825B1 EP 02741218 A EP02741218 A EP 02741218A EP 02741218 A EP02741218 A EP 02741218A EP 1514825 B1 EP1514825 B1 EP 1514825B1
Authority
EP
European Patent Office
Prior art keywords
rotary
brake
hoisting machine
rotary portion
manual
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02741218A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1514825A4 (en
EP1514825A1 (en
Inventor
Masanori c/o Mitsubishi Denki KK YASUE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1514825A1 publication Critical patent/EP1514825A1/en
Publication of EP1514825A4 publication Critical patent/EP1514825A4/en
Application granted granted Critical
Publication of EP1514825B1 publication Critical patent/EP1514825B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals

Definitions

  • the present invention relates to an elevator hoisting machine having a drive sheave around which a main rope is wrapped.
  • a car that is suspended from the main rope ascends and descends by means of rotation of the drive sheave.
  • a conventional elevator hoisting machine is disclosed in JP 2000-351548 A , for example.
  • An engaging portion for engaging a manual-operation handle is provided in an end portion of a rotary shaft in this example.
  • a brake device of the hoisting machine is released, and the rotary shaft is rotated manually by using the manual-operation handle.
  • the drive sheave of the hoisting machine thus rotates, and the car can ascend and descend.
  • the speed detector is provided in one end portion of the rotary shaft and the engaging portion is provided in the other end portion, it is necessary to secure a space for maintenance and replacement of the speed detector in the periphery of the one end portion, and it is necessary to secure a work space in the periphery of the other end portion for the manual-operation handle.
  • the present invention has been made with a view toward solving the problems described above. It is an object of the present invention to obtain an elevator hoisting machine in which a maintenance space can be made smaller, and in which manual rotation operation of a drive sheave can be performed easily.
  • an elevator hoisting machine comprising: a main shaft; a rotary portion having a drive sheave around which an elevator main rope is wrapped, the rotary portion rotating about the main shaft; a motor that causes the rotary portion to rotate; and a brake device for braking the drive sheave, wherein the rotary portion has a plurality of rotary portion side engaging portions with intervals therebetween in a circumferential direction, and the elevator hoisting machine further comprises a manual-operation handle for manually rotating the rotary portion, the manual-operation handle having a plurality of handle side engaging portions that engage the rotary portion side engaging portions.
  • Fig. 1 is a rear view that shows a state during manual rotation operation of an elevator hoisting machine (gearless hoisting machine) is conducted according to an embodiment mode of the present invention and Fig. 2 is a cross sectional view of the elevator hoisting machine of Fig. 1 .
  • a case 1 has a case main body 2 that is fixed to a fixing portion, and a disk shape rear plate 3 that is attached to the case main body 2.
  • a main shaft 4 is fixed to the center of the case main body 2.
  • a rotary portion 5 that rotates about the main shaft 4 is attached to the main shaft 4 through a bearing 6.
  • the rotary portion 5 has a cylindrical drive sheave 7, and a cylindrical brake drum 8 as a brake rotary body.
  • the drive sheave 7 and the brake drum 8 are provided integrally in the rotary portion 5.
  • a plurality of elevator main ropes 9 are wrapped around the drive sheave 7.
  • the main ropes 9 are each inserted within one of a plurality of rope grooves formed in an outer circumferential portion.
  • the brake drum 8 has a first end portion 8a in which the drive sheave 7 is provided, and a second end portion 8b that is positioned on a side opposite to the first end portion 8a.
  • a plurality of notches 8c as rotary portion side engaging portions are formed in the second end portion 8b.
  • the notches 8c are disposed in a circumferential direction with intervals therebetween. Further, the notches 8c are disposed symmetrically, with respect to the main shaft 4. Four of the notches 8c are formed in this example, at intervals of 90 degrees.
  • the brake drum 8 also functions as a motor rotor.
  • a motor stator 10 is fixed to an inner circumferential surface of the case main body 2 so as to be opposite to an outer circumferential surface of the brake drum 8.
  • a motor 11 that causes the rotary portion 5 to rotate has the brake drum 8 and the motor stator 10.
  • a brake device main body 12 for braking the brake drum 8 is disposed inside the brake drum 8.
  • the brake device main body 12 is supportedly mounted to the rear plate 3. It should be noted that a support structure for the brake device main body 12 is not shown.
  • a brake device (electromagnetic brake) 13 that puts brake on the drive sheave 7 has the brake drum 8 and the brake device main body 12.
  • a plurality of apertures 3a are formed in the rear plate 3 in order to perform maintenance of the brake device main body 12 from outside of the case 1.
  • the apertures 3a are closed by a lid (not shown) during normal operation.
  • the rear plate 3 supports the brake device main body 12, and therefore the aperture cannot be given a round shape.
  • the aperture is thus divided into the plurality of apertures 3a.
  • a manual-operation handle 14 for rotating the rotary portion 5 manually has: a flat plate shape handle main body 15 that possesses opposing first and second surfaces 15a and 15b; a plurality of (a pair of) projections 16 that are used as handle side engaging portions that engages the notches 8c; and a grip 17 that is provided in the second surface 15b.
  • the handle main body 15 has a length that is greater than the diameter of the case 1. It should be noted that the handle main body 15 may also be made smaller than the case 1, but operation can be performed more easily by using a smaller force on the handle 15 as the grip 17 is positioned farther away from the main shaft 4 while making the handle main body 15 larger.
  • the manual-operation handle 14 is mounted to the rotary portion 5 by simply inserting the projections 16 into the notches 8c, and consequently it is easy to attach the manual-operation handle 14 to, and remove the manual-operation handle 14 f rom, the rotary portion 5. Further, the manual-operation handle 14 is only mounted to the rotary portion 5 when necessary, and is removed from the rotary portion 5 during normal operation and stored in a predetermined storage location.
  • a speed detector 18 is provided in an end portion of the rear plate 3 side of the main shaft 4. The speed detector 18 surrounds the end portion of the main shaft 4.
  • the drive sheave 7 is rotated manually and the car is made to travel to the nearest floor.
  • the apertures 3a are exposed.
  • the manual-operation handle 14 is mounted to the rotary portion 5 (brake drum 8) as shown in Fig. 1 . The manual-operation handle 14 is then operated while the brake device 13 is released, and the rotary portion 5 rotates.
  • the projections 16 interfere with the rear plate 3 at this point, and therefore the manual-operation handle 14 cannot be rotated continuously. Accordingly, once the manual-operation handle 14 has been rotated from a solid line position to a double dashed line position in Fig. 1 , the brake device 13 is engaged, and the manual-operation handle 14 is removed from the rotary portion 5. The manual-operation handle 14 is next reattached at the solid line position, and the manual-operation handle 14 is rotated while the brake device 13 is released. By repeatedly performing this type of operation, the drive sheave 7 turns gradually, and the car is made to travel to the nearest floor.
  • the notches 8c that engage the manual-operation handle 14 are not formed in the main shaft 4 with this type of elevator hoisting machine, but instead are formed in the rotary portion 5. Therefore the manual-operation handle 14 can be mounted from the same side as the speed detector 18, even for cases where the speed detector 18 is mounted to the main shaft 4. Consequently, the maintenance space can be placed on one side in an axial direction of the main shaft 4, and the maintenance space that must be secured can be made smaller. Therefore the elevator hoisting machine can also be installed in a small space, and this is effective for applications to machine-room-less elevators, and the like.
  • the manual-operation handle 14 can be mounted even if the speed detector 18 is not removed, and manual rotation operations of the drive sheave 7 can thus be performed with ease. In addition, even for cases where the main shaft 4 does not rotate, the drive sheave 7 can be rotated manually by using the manual-operation handle 14.
  • the notches 8c are disposed symmetrically with respect to the main shaft 4, and therefore a rotational force from the manual-operation handle 14 can be transmitted to the rotary portion 5 with good efficiency, even though the manual-operation handle 14 is not supported by the main shaft 4.
  • the notches 8c are exposed from the apertures 3a that are used for maintenance on the brake device 13, and consequently the manual-operation handle 14 can be mounted even if the rear plate 3 is not removed. The operability of the manual rotation operation of the drive sheave 7 can thus be improved.
  • the rotary portion 5 in which the drive sheave 7 and the brake drum 8 are provided integrally is used, and the notches 8c are formed in the second end portion 8b of the brake drum 8. Consequently, the rotation force can be transmitted from the manual-operation handle 14 to the sheave 7 with good efficiency.
  • operation by the manual-operation handle 14 can be performed from the same side as the maintenance work on the brake device 13, and therefore the maintenance space can be made smaller.
  • the rotary portion side engaging portion is composed of the notches 8c, and the handle side engaging portion is formed of the projections 16.
  • the manual-operation handle 14 can thus engage with the rotary portion 5 through a simple structure.
  • bolt holes 8e may also be formed in an end surface 8d of the brake drum 8 as the rotary portion side engaging portion as shown in Fig. 3 , for example. In this case the bolt holes 8e can also be used for material handling during assembly within a factory.
  • notches 8c are formed in the inner circumferential surface side of the second end portion 8b in the example described above, notches 8f may also be formed in an outer circumferential surface side of the second end portion 8b, provided that the entire second end portion 8b is exposed from the rear plate 3.
  • the apertures 3a are divided into two apertures in the example explained above, the apertures may also be divided into three apertures. In this case the rotary portion side engaging portion may be disposed at the vertex of an equilateral triangle. Similarly, the present invention can also be applied to cases where the aperture is divided into four or more apertures.
  • the present invention can also be applied to a hoisting machine in which the main shaft rotates integrally with the rotary portion.
  • the rotary portion side engaging portion may also be provided in a portion other than the brake rotary body of the rotary portion, such as the drive sheave or the motor rotor, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)
EP02741218A 2002-06-20 2002-06-20 Elevator hoisting machine Expired - Lifetime EP1514825B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/006167 WO2004000710A1 (ja) 2002-06-20 2002-06-20 エレベータ用巻上機

Publications (3)

Publication Number Publication Date
EP1514825A1 EP1514825A1 (en) 2005-03-16
EP1514825A4 EP1514825A4 (en) 2008-12-10
EP1514825B1 true EP1514825B1 (en) 2010-04-28

Family

ID=29808122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02741218A Expired - Lifetime EP1514825B1 (en) 2002-06-20 2002-06-20 Elevator hoisting machine

Country Status (6)

Country Link
EP (1) EP1514825B1 (ko)
JP (1) JPWO2004000710A1 (ko)
KR (1) KR100571537B1 (ko)
CN (1) CN1310820C (ko)
DE (1) DE60236216D1 (ko)
WO (1) WO2004000710A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7500652B2 (en) * 2004-12-01 2009-03-10 Mitsubishi Electric Corporation Hoist for elevator
KR102037852B1 (ko) 2019-07-25 2019-10-30 주식회사 비티알수성 권상기용 시브의 수동 회전 조작 세트

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125596A (ja) * 1982-01-13 1983-07-26 山久チエイン株式会社 巻上機
JPS6115281U (ja) * 1984-07-03 1986-01-29 株式会社東芝 エレベ−タの巻上機
JPH0755786B2 (ja) * 1989-04-20 1995-06-14 三菱電機株式会社 エレベータ用トラクシヨンマシン
FI98724C (fi) * 1995-03-24 1997-08-11 Kone Oy Hissikoneiston hätäkäyttölaite

Also Published As

Publication number Publication date
DE60236216D1 (de) 2010-06-10
JPWO2004000710A1 (ja) 2005-10-20
KR100571537B1 (ko) 2006-04-14
CN1310820C (zh) 2007-04-18
WO2004000710A1 (ja) 2003-12-31
EP1514825A4 (en) 2008-12-10
KR20040030153A (ko) 2004-04-08
CN1543426A (zh) 2004-11-03
EP1514825A1 (en) 2005-03-16

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