CN114007975A - Anti-jumping device for elevator - Google Patents
Anti-jumping device for elevator Download PDFInfo
- Publication number
- CN114007975A CN114007975A CN201980096347.1A CN201980096347A CN114007975A CN 114007975 A CN114007975 A CN 114007975A CN 201980096347 A CN201980096347 A CN 201980096347A CN 114007975 A CN114007975 A CN 114007975A
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- CN
- China
- Prior art keywords
- balance wheel
- guide rail
- magnet
- mounting portion
- guide
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- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
In an anti-jumping device for an elevator, an installation part is installed on a guide rail above a movable component which moves up and down together with a balance wheel. The stopper is supported by the mounting portion, and when the balance wheel moves upward, the stopper contacts the movable member to prevent the balance wheel from jumping up. The mounting portion has a magnet. The mounting portion is mounted to the guide rail by the magnetic force of the magnet.
Description
Technical Field
The invention relates to an anti-jumping device of an elevator, which prevents a balance wheel from jumping.
Background
In a conventional follower type lock device, a lock device body is attached to a guide rail that guides vertical movement of a balance wheel. The lock device body is held by the guide rails by the elastic force of a pair of springs (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 8-67454
Disclosure of Invention
Problems to be solved by the invention
In the conventional follower type lock device as described above, a bending moment is applied to the lock device body by the elastic force of the pair of springs. Therefore, it is necessary to increase the rigidity of the members constituting the lock device body, and the weight of the lock device body becomes large. When the weight of the lock device main body increases, the burden on the worker during installation increases.
The present invention has been made to solve the above problems, and an object of the present invention is to provide an anti-jump device for an elevator, which can suppress an increase in weight of a mounting portion.
Means for solving the problems
The anti-jump device of the elevator of the invention comprises: a mounting portion mounted on a guide rail for guiding the up-and-down movement of the balance wheel above a movable member moving up and down together with the balance wheel; and a stopper supported by the mounting portion, the stopper being moved upward by the balance wheel, the stopper contacting the movable member to prevent the balance wheel from jumping up, the mounting portion having a magnet, the mounting portion being mounted to the guide rail by a magnetic force of the magnet.
Effects of the invention
In the anti-jump device of the elevator of the invention, the installation part is installed on the guide rail by utilizing the magnetic force of the magnet, so the weight increase of the installation part can be restrained.
Drawings
Fig. 1 is a schematic configuration diagram showing an elevator according to embodiment 1 of the present invention.
Fig. 2 is a horizontal sectional view of the guide rail of fig. 1.
Fig. 3 is a front view showing a key part of fig. 1 in an enlarged manner.
Fig. 4 is a plan view showing the anti-jump apparatus and the guide rail of fig. 3.
Fig. 5 is a front view illustrating the anti-jump-up apparatus of fig. 4.
Detailed Description
Hereinafter, specific embodiments will be described with reference to the drawings.
Fig. 1 is a schematic configuration diagram showing an elevator according to embodiment 1 of the present invention, and shows a shortened elevating stroke. In the figure, a hoisting machine 1 includes a drive sheave 2, a motor not shown, and a brake not shown. The motor rotates the drive sheave 2. The brake maintains the stationary state of the drive sheave 2. Further, the brake brakes the rotation of the drive sheave 2.
A suspension body 3 is wound around the drive sheave 2. As the suspension body 3, a plurality of ropes or a plurality of belts are used.
A car 4 is connected to the 1 st end of the suspension body 3. A counterweight 5 is connected to the 2 nd end of the suspension body 3. The car 4 and the counterweight 5 are suspended by the suspension body 3. The car 4 and the counterweight 5 are raised and lowered by rotating the drive sheave 2.
A flexible compensating body 6 is suspended between the lower portion of the car 4 and the lower portion of the counterweight 5. The compensating body 6 compensates for the weight imbalance of the suspension bodies 3 on one side and the other side of the drive sheave 2. As the compensating body 6, for example, a plurality of compensating ropes or a plurality of belts are used.
A balance wheel unit 7 that applies tension to the compensating body 6 is provided in the hoistway. A guide rail 8, a car buffer 9, and a counterweight buffer 10 are provided at the bottom of the hoistway. The guide rail 8 guides the up-and-down movement of the balance wheel unit 7.
The balance wheel unit 7 can move downward in accordance with the temporal extension of the suspension body 3 and the compensating body 6. Thereby, the tension applied to the compensating body 6 does not change with respect to the time-dependent elongation of the suspension body 3 and the compensating body 6.
Fig. 2 is a horizontal sectional view of the guide rail 8 of fig. 1. The guide rail 8 has a flange portion 8a, a guide portion 8b, and a connecting portion 8 c. The guide portion 8b and the connecting portion 8c protrude perpendicularly from the center of the flange portion 8a in the width direction of the guide rail 8 toward the balance wheel unit 7 side. The width direction of the guide rail 8 is the left-right direction of fig. 2.
The connecting portion 8c is located between the flange portion 8a and the guide portion 8 b. The dimension of the connecting portion 8c in the width direction of the guide rail 8 is smaller than the dimension of the guide portion 8b in the width direction of the guide rail 8.
The guide portion 8b has a 1 st side surface 8d, a 2 nd side surface 8e, and a distal end surface 8 f. The 1 st side surface 8d and the 2 nd side surface 8e are opposed to each other. The distal end surface 8f faces the balance wheel unit 7.
The balance wheel unit 7 is provided with a guide shoe, not shown. The guide shoes contact the 1 st side surface 8d, the 2 nd side surface 8e, and the tip end surface 8 f. Thereby, the 1 st side surface 8d, the 2 nd side surface 8e, and the end surface 8f function as guide surfaces for guiding the vertical movement of the balance wheel unit 7.
Fig. 3 is a front view showing a key part of fig. 1 in an enlarged manner. The balance wheel unit 7 has a balance wheel frame 11 and a balance wheel 12. In fig. 1, the balance wheel frame 11 is omitted, and the balance wheel unit 7 is depicted as a circle.
The balance wheel 12 is housed in the balance wheel frame 11. The balance wheel 12 is rotatable about a horizontal rotation axis with respect to the balance wheel frame 11. The compensating body 6 is wound around the balance wheel 12.
A pair of protruding members 13a and 13b and a groove forming member 14 as a movable member are fixed to a surface of the balance wheel frame 11 facing the guide rail 8. The pair of protrusion members 13a, 13b and the groove forming member 14 move up and down together with the balance wheel frame 11 and the balance wheel 12.
A groove 14a is provided in the groove forming member 14 along the vertical direction. A guide portion 8b is inserted into the groove 14 a.
The 1 st inner wall surface 14b of the groove 14a faces the 1 st side surface 8d with a gap. The 1 st inner wall surface 14b is inclined with respect to the 1 st side surface 8 d. Thereby, the interval between the 1 st inner wall surface 14b and the 1 st side surface 8d gradually decreases downward.
The 2 nd inner wall surface 14c of the groove 14a is parallel to the 2 nd side surface 8e and contacts the 2 nd side surface 8 e.
A jump-up prevention device 21 is mounted on the guide rail 8. In fig. 1, illustration of the pair of protrusion members 13a and 13b, the groove forming member 14, and the anti-jump-up device 21 is omitted.
The anti-jump-up device 21 has a mounting portion 23, an arm 24, and a roller 25 as a stopper.
The mounting portion 23 has a preventing device frame 22. The mounting portion 23 is mounted to the rail 8 above the groove forming member 14.
The upper end of the arm 24 is fixed to the arrester frame 22. The arm 24 protrudes downward from the preventer frame 22. The roller 25 is supported by the lower end of the arm 24.
Here, in an emergency, when the car 4 collides with the car buffer 9 or when the counterweight 5 collides with the counterweight buffer 10, a force is generated to raise the balance wheel 12. At this time, the balance wheel 12 and the balance wheel frame 11 move upward, and the roller 25 comes into contact with the groove forming member 14 to prevent the balance wheel 12 from jumping up.
Specifically, when the groove forming member 14 moves upward together with the balance wheel unit 7, the roller 25 moves relatively downward in the groove 14 a. The distance between the lower end of the 1 st inner wall surface 14b and the 1 st side surface 8d is smaller than the diameter of the roller 25. Therefore, the roller 25 is sandwiched between the lower end of the 1 st inner wall surface 14b and the 1 st side surface 8d in the middle of relatively advancing downward in the groove 14 a. This stops the upward movement of the groove forming member 14, and prevents the balance wheel 12 from jumping up.
When the suspension body 3 and the compensating body 6 are extended, the balance wheel unit 7 moves downward along the guide rail 8. At this time, the projecting members 13a and 13b move downward together with the balance wheel unit 7, and come into contact with the anti-bounce device 21. Thereby, the weight of the balance wheel unit 7 and the groove forming member 14 is applied to the jump-up prevention device 21, and the jump-up prevention device 21 also moves downward together with the balance wheel unit 7.
Conversely, the mounting portion 23 is mounted to the guide rail 8 with a force to the extent that it moves downward when the weight of the balance wheel unit 7 and the groove forming member 14 is applied.
Fig. 4 is a plan view showing the anti-jump-up device 21 and the guide rail 8 in fig. 3. Fig. 5 is a front view showing the anti-jump-up device 21 of fig. 4.
The attachment portion 23 includes, in addition to the arrester frame 22, a 1 st guide member 26 having an L-shaped cross section, a 2 nd guide member 27 having an L-shaped cross section, a plurality of plate-like spacers 28, a magnet 29, and a plurality of guide fixing bolts 30.
The preventing device frame 22 includes a flat plate-shaped frame main portion 22a, a flat plate-shaped 1 st projecting portion 22b, and a flat plate-shaped 2 nd projecting portion 22 c. The frame main portion 22a is opposed to the distal end surface 8 f. The 1 st and 2 nd projecting portions 22b and 22c project perpendicularly from the frame main portion 22a toward the flange portion 8 a.
The 1 st protruding portion 22b faces the 1 st side surface 8 d. The 2 nd protrusion 22c faces the 2 nd side surface 8 e.
The 1 st guide member 26, the 2 nd guide member 27, and the plurality of spacers 28 are fixed to the frame main portion 22a by guide fixing bolts 30. A plurality of spacers 28 are interposed between the 1 st and 2 nd guide members 26, 27 and the frame main portion 22 a.
The 1 st guide member 26 is in contact with the 1 st side surface 8 d. The 2 nd guide member 27 is in contact with the 2 nd side surface 8 e.
The spacers 28 adjacent to the 1 st guide member 26 and the spacers 28 adjacent to the 2 nd guide member 27 among the plurality of spacers 28 locally contact the tip end surface 8 f.
The magnet 29 is fixed to the frame main portion 22a by a plurality of magnet fixing bolts 33. The magnet 29 may be bonded to the frame main portion 22 a. As the magnet 29, for example, a permanent magnet is used. The attachment portion 23 is attached to the guide portion 8b by the magnetic force of the magnet 29, that is, the attractive force.
In a state where the attachment portion 23 is attached to the guide rail 8, the magnet 29 is disposed at a distance from the distal end surface 8 f. Therefore, the magnetic force of the magnet 29 acts on the distal end surface 8 f. That is, in embodiment 1, the distal end surface 8f serves as an attracting surface of the magnet 29.
In embodiment 1, a gap is provided between the magnet 29 and the distal end surface 8 f. A nonmagnetic material may be embedded in the gap. As the nonmagnetic material, for example, resin can be used.
The arm 24 is fixed to the 1 st projection 22b by a plurality of arm fixing bolts 31. A shaft 32 is provided at the lower end of the arm 24. The shaft 32 is parallel with respect to the axis of rotation of the balance wheel 12. The roller 25 is rotatable about the shaft 32 with respect to the arm 24.
In the anti-jump-up device 21, the attachment portion 23 is attached to the guide rail 8 by the magnetic force of the magnet 29. Therefore, the rigidity of the mounting portion 23 can be reduced, and an increase in weight of the mounting portion 23 can be suppressed.
Further, the mounting portion 23 can be formed of a metal plate, and the structure can be simplified. Further, the load of the mounting work to the guide rail 8 can be reduced.
Further, the attractive force of the magnet 29 is determined by the distance between the magnet 29 and the guide rail 8. Therefore, the holding force of the anti-bounce device 21 with respect to the guide rail 8 can be managed by the device design, and the burden of the adjustment work on site can be reduced.
In a state where the attachment portion 23 is attached to the guide rail 8, the magnet 29 is disposed at a distance from the guide rail 8. Therefore, abrasion of the magnet 29 can be suppressed.
Further, the magnetic force of the magnet 29 acts on the distal end surface 8 f. Therefore, the inclination of the anti-bounce device 21 with respect to the guide rail 8 can be suppressed. Further, since it is not necessary to improve the machining accuracy of the connecting portion 8c, the accuracy-required surface of the guide rail 8 can be reduced, and the machining cost can be reduced.
Further, by designing the position of the center of gravity of the mounting portion 23 to coincide with the position overlapping the distal end surface 8f, the inclination of the mounting portion 23 can be suppressed, and the magnet 29 can be downsized.
Further, since the 1 st guide member 26 contacts the 1 st side surface 8d and the 2 nd guide member 27 contacts the 2 nd side surface 8e, the guide rail 8 can be stably held.
Further, the spacer 28 adjacent to the 1 st guide member 26 and the spacer 28 adjacent to the 2 nd guide member 27 locally contact the distal end surface 8 f. Therefore, the space between the distal end surface 8f and the magnet 29 can be secured, and the guide rail 8 can be stably held.
In addition, 2 or more magnets may be used. For example, when 2 magnets are used for 1 attraction surface, it is preferable to arrange the 2 magnets so as to be separated from each other in the vertical direction, and to increase the distance between the magnets. This makes it possible to disperse the load acting on the mounting portion and reduce the size of the magnet used. Further, when the attachment portion is pressed, the likelihood of a moment generated due to a displacement of the pressed position can be increased.
Further, either or both of the 1 st side surface and the 2 nd side surface may be an attracting surface of the magnet. Further, all of the end surface, the 1 st side surface and the 2 nd side surface may be an attracting surface of the magnet.
The movable member is not limited to the groove forming member, and the stopper is not limited to the roller.
Further, the magnet may be in contact with the guide rail. By bringing the magnet into contact with the guide rail, the magnet can be miniaturized while securing sufficient attracting force.
Description of the reference symbols
8: a guide rail; 8 d: the 1 st side; 8 e: a 2 nd side; 8 f: a distal end face; 12: a balance wheel; 14: a groove forming member (movable member); 21: an anti-jump-up device; 22: a prevention device frame; 23: an installation part; 25: a roller (stopper); 26: 1 st guide member; 27: a 2 nd guide member; 28: a spacer; 29: and a magnet.
Claims (6)
1. An anti-bouncing device for an elevator, comprising:
a mounting portion mounted on a guide rail for guiding the vertical movement of the balance wheel above a movable member vertically moving together with the balance wheel; and
a stopper supported by the mounting portion and contacting the movable member to prevent the balance wheel from jumping up when the balance wheel moves upward,
the mounting part is provided with a magnet,
the mounting portion is mounted to the guide rail by using a magnetic force of the magnet.
2. The anti-jump apparatus of an elevator according to claim 1,
the magnet is disposed at a distance from the guide rail in a state where the mounting portion is mounted to the guide rail.
3. The anti-jump apparatus of an elevator according to claim 1 or 2,
the guide rail has a distal end surface opposed to the balance wheel,
the magnetic force of the magnet acts on the end surface.
4. The anti-jump apparatus of an elevator according to claim 3,
the guide rail has a 1 st side and a 2 nd side,
the mounting portion further has a 1 st guide member in contact with the 1 st side surface and a 2 nd guide member in contact with the 2 nd side surface.
5. The anti-jump apparatus of an elevator according to claim 4,
the mounting portion further has:
a preventive device frame to which the magnet is fixed; and
a plurality of spacers interposed between the preventer frame and the 1 st guide member and between the preventer frame and the 2 nd guide member.
6. The anti-jump apparatus of an elevator according to claim 5,
the spacer adjacent to the 1 st guide member and the spacer adjacent to the 2 nd guide member locally contact the tip end surface.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/025870 WO2020261544A1 (en) | 2019-06-28 | 2019-06-28 | Device for preventing elevator from jumping up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114007975A true CN114007975A (en) | 2022-02-01 |
| CN114007975B CN114007975B (en) | 2023-07-07 |
Family
ID=74060513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980096347.1A Active CN114007975B (en) | 2019-06-28 | 2019-06-28 | Anti-bouncing device of elevator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7086510B2 (en) |
| CN (1) | CN114007975B (en) |
| WO (1) | WO2020261544A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2295381A (en) * | 1941-05-15 | 1942-09-08 | Westinghouse Elec Elevator Co | Compensating sheave for elevators |
| JPS49103156U (en) * | 1972-12-28 | 1974-09-04 | ||
| JPH0867454A (en) * | 1994-08-29 | 1996-03-12 | Mitsubishi Denki Bill Techno Service Kk | Follower type lock down device of compensating pulley |
| JP2013166606A (en) * | 2012-02-14 | 2013-08-29 | Mitsubishi Electric Building Techno Service Co Ltd | Elevator compensation device and connecting device |
| JP2017007783A (en) * | 2015-06-19 | 2017-01-12 | 三菱電機ビルテクノサービス株式会社 | Guide rail oil receiver of elevator |
| CN106698137A (en) * | 2017-01-10 | 2017-05-24 | 成都辟思航空科技有限公司 | Permanent magnetic anti-falling device used on steel guide rail |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6197802B2 (en) * | 2015-02-02 | 2017-09-20 | 三菱電機ビルテクノサービス株式会社 | Lock-down device holding tool and position adjustment method for balancing vehicle device |
| JP2019055857A (en) * | 2017-09-21 | 2019-04-11 | 株式会社日立ビルシステム | Governor adjustment jig |
-
2019
- 2019-06-28 WO PCT/JP2019/025870 patent/WO2020261544A1/en active Application Filing
- 2019-06-28 JP JP2021527285A patent/JP7086510B2/en active Active
- 2019-06-28 CN CN201980096347.1A patent/CN114007975B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2295381A (en) * | 1941-05-15 | 1942-09-08 | Westinghouse Elec Elevator Co | Compensating sheave for elevators |
| JPS49103156U (en) * | 1972-12-28 | 1974-09-04 | ||
| JPH0867454A (en) * | 1994-08-29 | 1996-03-12 | Mitsubishi Denki Bill Techno Service Kk | Follower type lock down device of compensating pulley |
| JP2013166606A (en) * | 2012-02-14 | 2013-08-29 | Mitsubishi Electric Building Techno Service Co Ltd | Elevator compensation device and connecting device |
| JP2017007783A (en) * | 2015-06-19 | 2017-01-12 | 三菱電機ビルテクノサービス株式会社 | Guide rail oil receiver of elevator |
| CN106698137A (en) * | 2017-01-10 | 2017-05-24 | 成都辟思航空科技有限公司 | Permanent magnetic anti-falling device used on steel guide rail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114007975B (en) | 2023-07-07 |
| WO2020261544A1 (en) | 2020-12-30 |
| JPWO2020261544A1 (en) | 2021-11-18 |
| JP7086510B2 (en) | 2022-06-20 |
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