CN110621606A - Brake release device for elevator - Google Patents
Brake release device for elevator Download PDFInfo
- Publication number
- CN110621606A CN110621606A CN201780090812.1A CN201780090812A CN110621606A CN 110621606 A CN110621606 A CN 110621606A CN 201780090812 A CN201780090812 A CN 201780090812A CN 110621606 A CN110621606 A CN 110621606A
- Authority
- CN
- China
- Prior art keywords
- brake
- electromagnetic
- elevator
- lever
- release device
- 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.)
- Granted
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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
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
- F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
- F16D55/28—Brakes with only one rotating disc
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Braking Arrangements (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
An elevator brake release device according to the present invention is an elevator brake release device that releases a plurality of electromagnetic brakes of an elevator hoisting machine, and includes: a lever that mechanically releases a first electromagnetic brake that is a part of the plurality of electromagnetic brakes (3); a power supply capable of supplying electric power, which electrically releases a second electromagnetic brake other than the first electromagnetic brake among the plurality of electromagnetic brakes, to the second electromagnetic brake; and an electrical switch capable of supplying electric power from the power supply to the second electromagnetic brake.
Description
Technical Field
The present invention relates to an elevator brake release device for releasing a brake of an elevator hoisting machine.
Background
In a conventional brake for a hoisting machine for an elevator, a mechanism is generally provided which enables a machine to be released without using a power supply, in consideration of a situation where passengers are rescued when a car stops between floors due to a power failure or the like. For example, as a mechanism for mechanically releasing a brake of an elevator hoisting machine, there are mechanisms in which: a bolt is inserted into the armature from the block side, and the bolt is lifted up to pull the armature toward the block side, thereby releasing the brake for the elevator (see, for example, patent document 1).
Further, as a conventional mechanism for electrically releasing the elevator brake, there is a mechanism in which: an emergency power supply or a battery is connected to a coil of each brake to supply electric power, thereby releasing the elevator brake (see, for example, patent document 2).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 9-12242
Patent document 2: japanese patent laid-open No. 2008-50149
Disclosure of Invention
Problems to be solved by the invention
However, in the conventional mechanism for mechanically releasing the brake, when the number of the brakes is three or more, at least two or more armatures need to be operated by one lever, which causes a problem that the device is large and the operability is also deteriorated.
In addition, in the conventional mechanism for electrically releasing the brake, although a plurality of brakes can be easily released, when there is a defect in the coil of the brake, the brake cannot be released, and as a result, the car cannot be moved.
The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an elevator brake release device capable of easily and more reliably releasing all the brakes.
Means for solving the problems
An elevator brake release device according to the present invention is an elevator brake release device that releases a plurality of electromagnetic brakes of an elevator hoisting machine, and includes: a lever that mechanically releases a first electromagnetic brake that is a part of the plurality of electromagnetic brakes; a power supply capable of supplying electric power, which electrically releases a second electromagnetic brake other than the first electromagnetic brake among the plurality of electromagnetic brakes, to the second electromagnetic brake; and an electrical switch capable of supplying electric power from the power supply to the second electromagnetic brake.
Effects of the invention
According to the brake release device for an elevator of the present invention, all brakes can be released easily and more reliably.
Drawings
Fig. 1 is a side view of an elevator hoisting machine to which an elevator brake release device according to embodiment 1 of the present invention can be attached.
Fig. 2 is a front view of the elevator hoist shown in fig. 1.
Fig. 3 is a partial sectional view showing a portion of the electromagnetic brake and the disc shown in fig. 1.
Fig. 4 is a diagram showing the structure of an elevator brake release device according to embodiment 1 of the present invention.
Fig. 5 is a plan view showing a state in which a lever of an elevator brake release device according to embodiment 2 of the present invention is attached to an electromagnetic brake.
Fig. 6 is a side view of the lever and the electromagnetic brake of the elevator brake release device shown in fig. 5.
Fig. 7 is an enlarged partial view of the distal end portion 51A of the lever 51 of the elevator brake release device according to embodiment 2.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
Embodiment mode 1
Fig. 1 is a side view of an elevator hoisting machine to which an elevator brake release device according to embodiment 1 of the present invention can be attached. Fig. 2 is a front view of the elevator hoisting machine shown in fig. 1. An elevator hoist shown in fig. 1 and 2 is equipped with a motor 1, a sheave 2, a plurality of electromagnetic brakes 3, a disc 4, a shaft 5, and a shaft support 6, and can be mounted with the elevator brake release device according to embodiment 1 of the present invention.
The electric motor 1 is a rotary motor, and electrically rotates the shaft 5. The sheave 2 is attached to a shaft 5, and a rope for raising and lowering a car of an elevator is wound around the sheave. The shaft 5 is rotatably supported by a shaft support 6. The shaft 5 and the sheave 2 are rotated by the motor 1, whereby the car of the elevator is raised and lowered.
The disc 4 is attached to the sheave 2 and rotates together with the shaft 5 and the sheave 2. The electromagnetic brake 3 applies a braking force to the disk 4. In addition, there are various types of electromagnetic brakes for elevators, such as a disc brake in which a pad is pressed against a flat surface portion of a disc, and a drum brake in which a lining is pressed against a curved surface portion of a drum instead of the disc.
Fig. 3 is a partial sectional view showing a part of the electromagnetic brake 3 and the disk 4 shown in fig. 1. As shown in fig. 3, the electromagnetic brake 3 includes a block member (field)31, an armature 32, a spacer 33, a brake spring 34, and a coil 35. The electromagnetic brake 3 shown in fig. 3 has a disc shape. Further, the block member 31 of the electromagnetic brake 3 is provided with a bolt insertion hole 36.
The armature 32 and the spacer 33 are coupled to each other, and can be integrally moved toward the disk 4 by the elastic force of the brake spring 34. The coil 35 is embedded in the block member 31 and functions as an electromagnet when energized.
The block 31 is fixed to the main body of the elevator hoisting machine. The brake spring 34 is disposed in a state of being compressed between the block member 31 and the armature 32. The brake spring 34 is disposed in the concave portion of the block member 31. Thereby, the brake spring 34 applies an elastic force to the armature 32 in a direction away from the block member 31.
In a state where the coil 35 is not energized, the armature 32 and the spacer 33 are pressed toward the disk 4 by the brake spring 34, and the spacer 33 is pressed against the disk 4. At this time, a braking force is applied to the disk 4 by the frictional force between the spacer 33 and the disk 4.
On the other hand, when the coil 35 is energized, the coil 35 attracts the armature 32 made of metal such as iron by electromagnetic force, and the spacer 33 and the armature 32 move toward the block member 31.
At this time, the pad 33 is separated from the disc 4, and thus the braking force of the electromagnetic brake 3 is released. In fig. 3, the disc 4 is used in a disc shape, but a cylindrical drum or the like may be used.
Fig. 4 is a diagram showing the structure of an elevator brake release device according to embodiment 1 of the present invention. Fig. 4 shows a case where the elevator brake release device according to embodiment 1 is used for four electromagnetic brakes 3A, 3B, 3C, and 3D. In the example of fig. 4, one elevator hoisting machine includes four electromagnetic brakes 3A, 3B, 3C, and 3D.
As shown in fig. 4, an elevator brake release device according to embodiment 1 of the present invention includes a lever 51, a bolt 52, a lever member 53, an electric switch 54, a power source 61, and a lead wire 62. In the example of fig. 4, a case is shown in which a rod 51, a bolt 52, a lever member 53, and an electrical switch 54 are attached only to the electromagnetic brake 3A as the first electromagnetic brake. The lever 51 can be attached to any one of the electromagnetic brakes 3A, 3B, 3C, and 3D.
The bolt 52 is inserted into the bolt insertion hole 36 of the block member 31, and the tip thereof is attached to the armature 32. The lever member 53 is attached to the bolt 52. The lever member 53 is provided to be rotatable about a fulcrum fixed to the block member 31. An electric switch 54 is provided on the lever member 53. One end side of the lever 51 is rotatably attached to a fulcrum fixed to the block member 31, and the other end side thereof serves as a handle. The power source 61 is electrically connected to the electrical switch 54 through a lead 62, and the electrical switch 54 is electrically connected to the electromagnetic brakes 3B, 3C, 3D as the plurality of second electromagnetic brakes through the lead 62. The power source 61 is an emergency battery that supplies electric power to the electromagnetic brake 3 during a power failure or the like.
In the elevator brake release device according to embodiment 1 of the present invention, when the elevator stops between floors due to a power failure or the like, any of the electromagnetic brakes 3A is mechanically released using the lever 51 in order to save passengers from the car. At this time, the electromagnetic brakes 3B, 3C, and 3D as the second electromagnetic brakes are electrically released by energization of the coil 35.
Specifically, first, the bolt 52 is inserted into the block member 31 from the bolt insertion hole 36 of the electromagnetic brake 3A, and the bolt 52 is attached to the armature 32. Then, a lever member 53 provided with an electric switch 54 is attached between the head of the bolt 52 and the block member 31 so as to be rotatable about a fulcrum fixed to the block member 31. The lever member 53 may be attached to the bolt 52 in advance.
Then, one end side of the lever 51 is attached so as to be rotatable about a fulcrum fixed to the block member 31, so that when the other end side of the lever 51 is pressed, the electrical switch 54 is pressed by the lever 51. The electrical switch 54 is electrically connected to the power source 61 through a lead 62, and the electrical switch 54 is electrically connected to the electromagnetic brakes 3B, 3C, and 3D through the lead 62.
When the operator presses the other end side of the lever 51, the lever member 53 is urged in a direction of lifting the bolt 52 by the principle of leverage, and the bolt 52 is lifted. Thereby, the pad 33 is separated from the disc 4, and the electromagnetic brake 3A is mechanically released.
When the other end of the lever 51 is pressed, the electric switch 54 is pressed by the lever 51, and electric power is supplied from the power source 61 to the coils 35 of the electromagnetic brakes 3B, 3C, and 3D via the lead wire 62. Thereby, the electromagnetic brakes 3B, 3C, 3D are electrically released.
In this way, when only the electromagnetic brake 3A is mechanically released, the electromagnetic brakes 3B, 3C, 3D are electrically released, and as a result, all the electromagnetic brakes 3A, 3B, 3C, 3D can be released.
For example, in the case where there is a defect in the coil 35 of the electromagnetic brake 3A, it is necessary to mechanically release the electromagnetic brake 3A, but in such a case, all the electromagnetic brakes 3A, 3B, 3C, 3D can be released only by mechanically releasing the electromagnetic brake 3A by the lever 51. In addition, when there is a failure in the coils 35 of the plurality of electromagnetic brakes 3, the rod 51 may be attached to each of the plurality of electromagnetic brakes 3. The lever 51 may be attached to any one of the electromagnetic brakes 3A, 3B, 3C, and 3D.
In the elevator brake release device according to embodiment 1 of the present invention, since some of the electromagnetic brakes 3 are mechanically released and the other electromagnetic brakes 3 are electrically released, even when there is a defect in the coil 35 in some of the plurality of electromagnetic brakes 3, the electromagnetic brakes 3 are mechanically released and the other electromagnetic brakes 3 are electrically released, so that all of the electromagnetic brakes 3 can be released. Thereby, all the electromagnetic brakes 3 can be released easily and more reliably.
Further, since the electrical switch 54 is pressed only by pressing the other end side of the lever 51, one operator can perform the releasing operation of all the electromagnetic brakes 3. Further, when the worker releases the lever 51, no current flows through all the electromagnetic brakes 3, and all the electromagnetic brakes 3 operate, so that the car does not fall.
In embodiment 1, the lever 51, the bolt 52, and the lever member 53 are used as a mechanism for mechanically releasing the electromagnetic brake 3, but the lever member 53 may not be used, and the lever 51 may be directly attached to the bolt 52. Further, the shape of the lever 51 and the position of the electrical switch 54 can be changed as appropriate. For example, an electrical switch may be provided at the handle portion of the lever 51. The number of the electromagnetic brakes 3 is not limited to four, and may be two, three, or five or more.
Embodiment mode 2
Fig. 5 is a plan view showing a state in which a lever 51 of an elevator brake release device according to embodiment 2 of the present invention is attached to an electromagnetic brake 3A. Fig. 6 is a side view of the lever 51 and the electromagnetic brake 3A of the elevator brake release device shown in fig. 5. In fig. 5 and 6, only one electromagnetic brake 3A is shown, but like embodiment 1, embodiment 2 also has other electromagnetic brakes 3B, 3C, and 3D. In embodiment 2, the same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof is omitted as appropriate.
As shown in fig. 5 and 6, in the elevator brake release device according to embodiment 2, an electric switch 54 is provided at a handle portion on one end side of a lever 51. A handle 81 is provided at a portion of the electric switch 54 on the one end side of the lever 51.
In the elevator brake release device according to embodiment 2, when the worker grips the handle 81 on one end side of the lever 51, the handle 81 moves relative to the lever 51, and the electric switch 54 is pressed by the handle 81. Thereby, the other electromagnetic brakes 3B, 3C, and 3D are electrically released, as in the brake release device for an elevator of embodiment 1.
Fig. 7 is an enlarged partial view of the distal end portion 51A of the lever 51 of the elevator brake release device according to embodiment 2. The front end 51A of the lever 51 of the elevator brake release device according to embodiment 2 is wedge-shaped, and this end is attached to the electromagnetic brake 3A.
The wedge-shaped tip portion 51A enters below the head of the bolt 52, and the lever 51 is rotated by pressing the grip portion of the lever 51, so that the bolt 52 can be lifted up. Thereby, the electromagnetic brake 3A to which the lever 51 is attached is mechanically released, as in embodiment 1. The other structures are the same as those of the elevator brake release device according to embodiment 1.
In the elevator brake release device according to embodiment 2, when the handle 81 at one end of the lever 51 is gripped, the electrical switch 54 is pressed, and the other electromagnetic brakes 3B, 3C, and 3D are electrically released. At this time, since the other distal end portion 51A of the lever 51 is wedge-shaped, when the lever 51 is pressed toward the handle 81 and rotated, the bolt 52 is lifted up, and the electromagnetic brake 3A to which the lever 51 is attached is mechanically released.
In this way, by rotating the lever 51 by pressing the lever 51 while grasping the handle 81 at the one end side of the lever 51, all the electromagnetic brakes 3 can be released. The handle 81 is not necessarily required, and the operator may directly press the electric switch 54.
In the elevator brake release device according to embodiment 2, since the electric switch 54 and the handle 81 are provided in the grip portion of the lever 51, the electric switch 54 can be pressed more reliably. Further, as in the elevator brake release device according to embodiment 1, even when there is a defect in the coil 35 in some of the plurality of electromagnetic brakes 3, the electromagnetic brakes 3 are mechanically released only to electrically release the other electromagnetic brakes 3, so that all the electromagnetic brakes 3 can be easily released. Other effects are similar to those of the elevator brake release device according to embodiment 1.
The elevator brake release device according to the above embodiment can be variously modified within the scope of the technical idea thereof. For example, the shape of the lever 51, the position where the electrical switch 54 is provided, the number of electromagnetic brakes that are mechanically and electrically released, and the like can be variously changed.
Description of the reference symbols
1: an electric motor; 2: a sheave; 3: an electromagnetic brake; 4: a disc; 5: a shaft; 6: a shaft support; 31: a block-shaped member; 32: an armature; 33: a liner; 34: a brake spring; 35: a coil; 36: a bolt insertion hole; 51: a rod; 52: a bolt; 53: a lever member; 54: an electric switch; 61: a power source; 62: a wire; 81: a handle.
Claims (5)
1. An elevator brake release device that releases a plurality of electromagnetic brakes of an elevator hoisting machine, the elevator brake release device comprising:
a lever that mechanically releases a first electromagnetic brake that is a part of the plurality of electromagnetic brakes;
a power supply capable of supplying electric power, which electrically releases a second electromagnetic brake other than the first electromagnetic brake among the plurality of electromagnetic brakes, to the second electromagnetic brake; and
an electrical switch capable of supplying electric power from the power supply to the second electromagnetic brake.
2. The brake release device for an elevator according to claim 1,
the electrical switch is depressed by the lever.
3. The brake release device for an elevator according to claim 1,
the electrical switch is provided at the handle portion of the lever.
4. The elevator brake release device according to any one of claims 1 to 3,
supplying power from the power source to the second electromagnetic brake when the first electromagnetic brake is mechanically released by the lever.
5. The elevator brake release device according to any one of claims 1 to 4,
the lever is attached to each of the plurality of first electromagnetic brakes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/019231 WO2018216111A1 (en) | 2017-05-23 | 2017-05-23 | Brake release device for elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110621606A true CN110621606A (en) | 2019-12-27 |
| CN110621606B CN110621606B (en) | 2021-03-23 |
Family
ID=64396384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780090812.1A Active CN110621606B (en) | 2017-05-23 | 2017-05-23 | Brake release device for elevator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6789389B2 (en) |
| CN (1) | CN110621606B (en) |
| WO (1) | WO2018216111A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020188709A1 (en) * | 2019-03-18 | 2020-09-24 | 三菱電機株式会社 | Elevator brake release apparatus |
| JP7024898B1 (en) * | 2021-02-10 | 2022-02-24 | 三菱電機株式会社 | Brake release device |
| KR102341994B1 (en) * | 2021-08-30 | 2021-12-21 | 김정록 | Apparatus for braking sheave for elevator |
| KR102341995B1 (en) * | 2021-08-30 | 2021-12-21 | 김정록 | Apparatus for braking sheave for elevator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0597338A (en) * | 1991-10-08 | 1993-04-20 | Toshiba Corp | Escape device for elevator |
| JP2001316054A (en) * | 2000-05-10 | 2001-11-13 | Hitachi Building Systems Co Ltd | Method of rescuing passenger shut in elevator |
| CN102046508A (en) * | 2008-06-03 | 2011-05-04 | 奥蒂斯电梯公司 | Single brakeshoe test (electrica) for elevators |
| CN102958820A (en) * | 2010-06-25 | 2013-03-06 | 三菱电机株式会社 | Brake release mechanism |
| CN103328362A (en) * | 2011-02-04 | 2013-09-25 | 奥的斯电梯公司 | Stop sequencing for braking device |
| CN104395217A (en) * | 2012-06-13 | 2015-03-04 | 株式会社日立制作所 | Electromagnetic brake release device for elevators |
-
2017
- 2017-05-23 CN CN201780090812.1A patent/CN110621606B/en active Active
- 2017-05-23 WO PCT/JP2017/019231 patent/WO2018216111A1/en active Application Filing
- 2017-05-23 JP JP2019519850A patent/JP6789389B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0597338A (en) * | 1991-10-08 | 1993-04-20 | Toshiba Corp | Escape device for elevator |
| JP2001316054A (en) * | 2000-05-10 | 2001-11-13 | Hitachi Building Systems Co Ltd | Method of rescuing passenger shut in elevator |
| CN102046508A (en) * | 2008-06-03 | 2011-05-04 | 奥蒂斯电梯公司 | Single brakeshoe test (electrica) for elevators |
| CN102958820A (en) * | 2010-06-25 | 2013-03-06 | 三菱电机株式会社 | Brake release mechanism |
| CN103328362A (en) * | 2011-02-04 | 2013-09-25 | 奥的斯电梯公司 | Stop sequencing for braking device |
| CN104395217A (en) * | 2012-06-13 | 2015-03-04 | 株式会社日立制作所 | Electromagnetic brake release device for elevators |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6789389B2 (en) | 2020-11-25 |
| CN110621606B (en) | 2021-03-23 |
| JPWO2018216111A1 (en) | 2019-11-07 |
| WO2018216111A1 (en) | 2018-11-29 |
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