CN114634080A - Elevator traction machine - Google Patents
Elevator traction machine Download PDFInfo
- Publication number
- CN114634080A CN114634080A CN202110332459.1A CN202110332459A CN114634080A CN 114634080 A CN114634080 A CN 114634080A CN 202110332459 A CN202110332459 A CN 202110332459A CN 114634080 A CN114634080 A CN 114634080A
- Authority
- CN
- China
- Prior art keywords
- sheave
- housing
- rotor
- elevator
- brake
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 230000000452 restraining effect Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000005347 demagnetization Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
- B66B11/0438—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a gearless driving, e.g. integrated sheave, drum or winch in the stator or rotor of the cage motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention provides a traction machine of an elevator, which can easily perform maintenance inspection without increasing the volume. The hoist of elevator possesses: a housing; a stator; a rotor; a sheave provided on the rotor at a position closer to the front side of the housing than the rotor, the sheave being provided so as to be rotatable together with the rotor, and a hoisting rope being wound around the sheave; a fitting body provided on a front side of the housing relative to the rotor and a rear side of the housing relative to the sheave, on a radially outer side of the sheave, and provided to be rotatable together with the rotor and the sheave; a brake disc that is provided on an outer peripheral side of the sheave so as to be detachable from an outer periphery of the fitting body, and that is provided so as to be rotatable together with the rotor, the sheave, and the fitting body; and a gripping device that grips and releases the brake disc radially outside the sheave.
Description
Technical Field
The present invention relates to a traction machine for an elevator.
Background
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 6485673
Disclosure of Invention
Problems to be solved by the invention
However, in the brake unit of the hoisting machine described in patent document 1, the brake unit is disposed outside the brake drum. Therefore, the volume of the hoisting machine increases.
The present invention has been made to solve the above problems. The invention aims to provide an elevator traction machine which can be easily maintained and checked without increasing the volume.
Means for solving the problems
The elevator hoist of the present invention comprises: a housing forming an outer contour; a stator disposed inside the housing; a rotor that faces the inside of the stator inside the housing and is provided to be rotatable in an axial direction of the housing; a sheave provided on the rotor at a position closer to the front side of the housing than the rotor, the sheave being provided to be rotatable together with the rotor, and a hoist rope being wound around the sheave; a fitting body provided at a position closer to a front side of the housing than the rotor and closer to a rear side of the housing than the sheave, on a radially outer side of the sheave, and provided to be rotatable together with the rotor and the sheave; a brake disc that is provided on an outer peripheral side of the sheave so as to be detachable from an outer periphery of the fitting body, and that is provided so as to be rotatable together with the rotor, the sheave, and the fitting body; and a gripping device that grips and releases the brake disc on the radially outer side of the sheave.
Effects of the invention
According to the present invention, therefore, maintenance and inspection of the hoisting machine can be easily performed without increasing the volume of the hoisting machine.
Drawings
Fig. 1 is a plan view showing an elevator layout to which a hoisting machine of an elevator in embodiment 1 is applied.
Fig. 2 is a vertical cross-sectional view of an elevator hoisting machine according to embodiment 1.
Fig. 3 is a perspective view of an elevator hoisting machine according to embodiment 1.
Fig. 4 is an enlarged perspective view of a brake of an elevator hoisting machine according to embodiment 1.
Description of the reference symbols
1: a hoistway; 2: a guide rail for a car; 3: a guide rail for counterweight; 4: a car; 5: a counterweight; 6: a traction machine; 7: a control device; 8: a housing; 9: a stator; 10: a rotor; 11: a sheave; 11 a: an oil supply space; 12: a shaft body; 13: a bearing; 14: a hoisting rope; 15: chimera; 16: a brake disc; 17: 1 st friction member; 18: a 2 nd friction member; 19: a holding device; 20: the 1 st handle part; 20 a: the iron core is fixed in the front of the 1 st position; 20 b: 1, fixing an iron core at the rear part; 21: a 2 nd grip part; 21 a: the 2 nd front fixed iron core; 21 b: the 2 nd rear part fixes the iron core; 22: 1, a drop-proof part; 23: 2 nd anti-slip part; 24: a bracket; 25: a rotation detector.
Detailed Description
Embodiments are described with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Repeated explanation of this part is appropriately simplified or even omitted.
Fig. 1 is a plan view showing an elevator layout to which a hoisting machine of an elevator in embodiment 1 is applied.
In the machine roomless elevator of fig. 1, a hoistway 1 extends through each floor of a building. A pair of car guide rails 2 are provided on both sides of the hoistway 1. A pair of the heavy guide rails 3 is provided on one side and the inner side of the hoistway 1.
The car 4 is disposed on the near side of the hoistway 1. The car 4 is guided by a pair of car guide rails 2. The counterweight 5 is disposed on one side and the inner side of the hoistway 1. The counterweight 5 is guided by a pair of counterweight guide rails 3.
The thin hoisting machine 6 is installed on the other side and the inner side of the hoistway 1. For example, the hoisting machine 6 is provided at the bottom of the hoistway 1. The control device 7 is provided on the other side of the hoistway 1. For example, the control device 7 is provided at the bottom of the hoistway 1.
Next, key parts of the hoisting machine 6 will be described with reference to fig. 2.
Fig. 2 is a vertical cross-sectional view of an elevator hoisting machine according to embodiment 1.
As shown in fig. 2, the housing 8 constitutes an outer contour of the hoisting machine 6. The housing 8 is provided in a box shape. The front portion of the housing 8 faces the center side of the hoistway 1. The casing 8 is open on the center side of the hoistway 1. For example, the case 8 is formed to be square when viewed from the center side of the hoistway 1.
The stator 9 is provided in a ring shape inside the housing 8. The rotor 10 is provided in a ring shape inside the stator 9. The outer peripheral surface of the rotor 10 faces the inner peripheral surface of the stator 9.
The sheave 11 is provided in a ring shape at a position forward of the housing 8. The sheave 11 is provided integrally with the rotor 10 on the front side of the housing 8. The outer diameter of the sheave 11 is smaller than the outer diameter of the rotor 10. The sheave 11 includes an oil supply space 11 a. The oil supply space 11a connects a space on the front surface side of the sheave 11 and a space on the inner peripheral surface side of the sheave 11.
The shaft body 12 is fixed to the center of the rear portion of the housing 8. The shaft protrudes inside the housing 8 toward the front of the housing 8. The shaft body 12 penetrates the center of the sheave 11. The shaft body 12 rotatably supports the sheave 11. A plurality of bearings 13 are provided between the inner circumferential surface of the sheave 11 and the outer circumferential surface of the shaft.
The hoisting ropes 14 are wound around the outer peripheral surface of the sheave 11. One side of the hoisting ropes 14, not shown, supports the car 4. The other side of the hoisting ropes 14 supports the counterweight 5.
Next, the braking portion of the hoisting machine 6 will be described with reference to fig. 3.
Fig. 3 is a perspective view of an elevator hoisting machine according to embodiment 1.
As shown in fig. 3, the fitting body 15 is arranged in a ring shape. The fitting body 15 is provided on the radially outer side of the sheave 11 on the front side of the housing 8 relative to the rotor 10 and on the rear side of the housing 8 relative to the sheave 11. The fitting body 15 is provided integrally with the rotor 10 and the sheave 11. The outer diameter of the fitting body 15 is smaller than the outer diameter of the rotor 10. The outer diameter of the fitting body 15 is larger than the outer diameter of the sheave 11. For example, the fitting 15 is a spline.
The brake disc 16 is provided on the outer peripheral side of the sheave 11 so as to be detachable from the outer periphery of the fitting body 15. The brake disk 16 is provided movably in the front-rear direction of the housing 8 along the fitting body 15. When the fitting body 15 is a spline, the inner peripheral portion of the brake disk 16 is a spline corresponding to the spline of the fitting body 15.
The gripping device 19 is provided to be able to grip and release the brake radially outside the sheave 11. Specifically, the gripping device 19 includes a 1 st gripping part 20 and a 2 nd gripping part 21.
The 1 st gripping part 20 is provided on the housing 8 side on the front side of the brake disk 16. The 1 st gripping portion 20 includes a 1 st front fixed core 20a and a 1 st rear fixed core 20 b. Although not shown, the 1 st front fixed core 20a and the 1 st rear fixed core 20b house the 1 st movable core, the 1 st brake coil, and the 1 st brake spring.
The 2 nd grip portion 21 is provided on the other side of the housing 8 in front of the brake disk 16. The 2 nd grip 21 includes a 2 nd front fixed core 21a and a 2 nd rear fixed core 21 b. Although not shown, the 2 nd front fixed core 21a and the 2 nd rear fixed core 21b house the 2 nd movable core, the 2 nd brake coil, and the 2 nd brake spring.
The 1 st escape preventer 22 is provided at a front portion of the 1 st front fixed core 20 a. The 1 st escape preventer 22 is adjacent to one side of the outer circumferential surface of the sheave 11. The 1 st slipping-off preventive member 22 suppresses the hoisting ropes 14 from slipping off from the sheave 11 side.
The 2 nd escape preventer 23 is provided in a front portion of the 2 nd front fixed core 21 a. The 2 nd retaining member 23 is adjacent to the other outer circumferential surface of the sheave 11. The 2 nd anti-slip member 23 suppresses the hoisting ropes 14 from slipping off from the other side of the sheave 11.
The bracket 24 is formed of a rectangular plate material. The bracket 24 is provided across the front surface of the 1 st escape preventer 22 and the front surface of the 2 nd escape preventer 23 in front of the shaft body 12.
The rotation detector 25 is, for example, an encoder. The rotation detector 25 is, for example, a resolver. The rotation detector 25 is fixed to the center of the bracket 24. The rotation detector 25 is fitted to the front end of the sheave 11. The rotation detector 25 is provided to be able to detect the rotation speed of the sheave 11.
Next, key parts of the braking portion of the hoisting machine 6 will be described with reference to fig. 4.
Fig. 4 is an enlarged perspective view of a brake of an elevator hoisting machine according to embodiment 1.
As shown in fig. 4, the 1 st friction member 17 is provided on the front surface of the brake disc 16. The 2 nd friction piece 18 is provided on the rear surface of the brake disc 16.
The 1 st grip portion 20 grips and releases one side of the brake disk 16 together with one side of the housing 8. Specifically, the 1 st movable iron core grips the one side of the brake disk 16 together with the one side of the housing 8 by the restoring force of the 1 st brake spring by demagnetization of the 1 st brake coil. The magnetization of the 1 st brake coil releases the 1 st movable iron core from gripping the one side of the brake disk 16 against the restoring force of the 1 st brake spring.
Although not shown, the 2 nd grip portion 21 grips and releases the brake disk 16 together with the other side of the housing 8. Specifically, the 2 nd movable iron core grips the other side of the brake disk 16 together with the other side of the housing 8 by the restoring force of the 2 nd brake spring by demagnetization of the 2 nd brake coil. The 2 nd movable iron core releases the other side of the brake disk 16 against the restoring force of the 2 nd brake spring by the 2 nd brake coil magnetization.
According to embodiment 1 described above, the gripping device 19 grips and releases the brake disc 16 radially outward of the sheave 11. The gripping device 19 grips the brake disk 16 to generate a braking force. The volume of the hoisting machine 6 is equal to the volume of the hoisting machine in which the brake is disposed inside the rotor 10. Therefore, maintenance inspection of the hoisting machine 6 can be easily performed from the front of the hoisting machine 6 without increasing the volume of the hoisting machine 6. As a result, in the machine-roomless elevator, the depth of the bottom and the height of the upper part of the hoistway can be suppressed.
Specifically, the sheave 11 does not protrude outside the housing 8 when viewed in the axial direction of the shaft body 12. The 1 st grip portion 20 grips and releases the brake disk 16 together with one side of the housing 8. The 2 nd grip portion 21 grips and releases the brake disk 16 together with the other side of the housing 8. Therefore, the rotation of the sheave 11 can be braked in a balanced manner.
The hoisting rope 14 is wound around the upper or lower portion of the sheave 11. Therefore, the 1 st gripping part 20 and the 2 nd gripping part 21 can brake the rotation of the sheave 11 without interfering with the hoisting rope 14.
Further, the 1 st retaining member 22 is provided at the front of the 1 st grip portion 20. The 2 nd escape preventer 23 is provided at the front of the 2 nd grip part 21. Therefore, the maintenance inspection of the 1 st and 2 nd retainers 22 and 23 can be easily performed from the front of the hoisting machine 6.
Further, the bracket 24 is provided across the front surface of the 1 st grip portion 20 and the front surface of the 2 nd grip portion 21. The rotation detector 25 is fixed to the bracket 24. Therefore, the maintenance inspection of the rotation detector 25 can be easily performed from the front of the hoisting machine 6.
The oil supply space 11a connects the space on the front surface side of the sheave 11 and the space on the inner peripheral surface side of the sheave 11. Therefore, oil can be easily supplied to the bearing 13 from the front of the hoisting machine 6 through the oil supply space 11 a.
In addition, the rotor 10 and the sheave 11 may be fixed to each other as separate members.
The hoisting machine 6 according to the embodiment may be provided at the upper portion of the hoistway 1 by reversing the vertical direction.
Claims (5)
1. An elevator hoist, comprising:
a housing forming an outer contour;
a stator disposed inside the housing;
a rotor that faces the inside of the stator inside the housing and is provided to be rotatable in an axial direction of the housing;
a sheave provided on the rotor at a position closer to the front side of the housing than the rotor, the sheave being provided to be rotatable together with the rotor, and a hoist rope being wound around the sheave;
a fitting body provided at a position closer to a front side of the housing than the rotor and closer to a rear side of the housing than the sheave, on a radially outer side of the sheave, and provided to be rotatable together with the rotor and the sheave;
a brake disc that is provided on an outer peripheral side of the sheave so as to be detachable from an outer periphery of the fitting body, and that is provided so as to be rotatable together with the rotor, the sheave, and the fitting body; and
and a gripping device that grips and releases the brake disc radially outside the sheave.
2. The hoisting machine of an elevator according to claim 1,
the sheave does not protrude outside the housing when viewed in the axial direction of the rotor,
the brake disk is disposed in front of the housing,
the gripping device includes:
a 1 st gripping portion which is disposed on a front side of the brake disk and grips and releases the brake disk together with one side of the housing; and
and a second grip portion which is disposed on the other side of the front of the brake disk and grips and releases the brake disk together with the other side of the housing.
3. The hoisting machine of an elevator according to claim 2,
the hoist of the elevator is provided with:
a 1 st retaining member provided at a front portion of the 1 st gripping portion in a state of being adjacent to an outer peripheral surface of one side of the sheave, for restraining the hoisting rope from falling off from one side of the sheave; and
and a 2 nd anti-slip device provided at a front portion of the 2 nd gripping portion in a state of being adjacent to the outer peripheral surface of the other side of the sheave, for suppressing the hoisting rope from slipping off from the other side of the sheave.
4. The traction machine of an elevator according to claim 2 or 3,
the hoist of the elevator is provided with:
a shaft body that rotatably supports the sheave;
a bracket provided across the front surface of the 1 st grip portion and the front surface of the 2 nd grip portion in front of the shaft body; and
and a rotation detector fixed to the bracket and fitted to a distal end portion of the shaft body.
5. The hoisting machine of an elevator according to claim 4, wherein,
the sheave includes an oil supply space that connects a space on a front surface side of the sheave itself and a space on an inner circumferential surface side of the sheave itself.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020208559A JP6950810B1 (en) | 2020-12-16 | 2020-12-16 | Elevator hoisting machine |
| JP2020-208559 | 2020-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114634080A true CN114634080A (en) | 2022-06-17 |
Family
ID=78001402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110332459.1A Pending CN114634080A (en) | 2020-12-16 | 2021-03-29 | Elevator traction machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6950810B1 (en) |
| CN (1) | CN114634080A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004299910A (en) * | 2004-07-20 | 2004-10-28 | Hitachi Ltd | Elevator apparatus |
| CN1856437A (en) * | 2004-09-13 | 2006-11-01 | 三菱电机株式会社 | Hoist for elevator |
| CN1984833A (en) * | 2005-05-30 | 2007-06-20 | 三菱电机株式会社 | Elevator hoist |
| KR20070105150A (en) * | 2006-04-25 | 2007-10-30 | 주식회사 코리아엘텍 | Traction device for elevator |
| DE102006052767A1 (en) * | 2006-11-09 | 2008-05-15 | Robert Bosch Gmbh | Electric motor for lift, has brake device with brake body that is pressed against another brake body i.e. brake disk, where brake device is arranged partially outside rotor, and brake disk is fixed directly at outer diameter of rotor |
| JP2009073635A (en) * | 2007-09-21 | 2009-04-09 | Meidensha Corp | Hoist with double brake |
| JP2015023624A (en) * | 2013-07-17 | 2015-02-02 | 株式会社日立製作所 | Hoist for elevator |
| CN106185563A (en) * | 2014-08-06 | 2016-12-07 | 株式会社日立制作所 | Lift appliance and lift appliance traction machine |
| CN107848761A (en) * | 2015-08-28 | 2018-03-27 | 株式会社日立制作所 | Elevator hoist and elevator |
| CN110546100A (en) * | 2017-04-26 | 2019-12-06 | 三菱电机株式会社 | Elevator device |
-
2020
- 2020-12-16 JP JP2020208559A patent/JP6950810B1/en active Active
-
2021
- 2021-03-29 CN CN202110332459.1A patent/CN114634080A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004299910A (en) * | 2004-07-20 | 2004-10-28 | Hitachi Ltd | Elevator apparatus |
| CN1856437A (en) * | 2004-09-13 | 2006-11-01 | 三菱电机株式会社 | Hoist for elevator |
| CN1984833A (en) * | 2005-05-30 | 2007-06-20 | 三菱电机株式会社 | Elevator hoist |
| KR20070105150A (en) * | 2006-04-25 | 2007-10-30 | 주식회사 코리아엘텍 | Traction device for elevator |
| DE102006052767A1 (en) * | 2006-11-09 | 2008-05-15 | Robert Bosch Gmbh | Electric motor for lift, has brake device with brake body that is pressed against another brake body i.e. brake disk, where brake device is arranged partially outside rotor, and brake disk is fixed directly at outer diameter of rotor |
| JP2009073635A (en) * | 2007-09-21 | 2009-04-09 | Meidensha Corp | Hoist with double brake |
| JP2015023624A (en) * | 2013-07-17 | 2015-02-02 | 株式会社日立製作所 | Hoist for elevator |
| CN106185563A (en) * | 2014-08-06 | 2016-12-07 | 株式会社日立制作所 | Lift appliance and lift appliance traction machine |
| CN107848761A (en) * | 2015-08-28 | 2018-03-27 | 株式会社日立制作所 | Elevator hoist and elevator |
| CN110546100A (en) * | 2017-04-26 | 2019-12-06 | 三菱电机株式会社 | Elevator device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6950810B1 (en) | 2021-10-13 |
| JP2022095308A (en) | 2022-06-28 |
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