CN107640680B - Elevator vibration-proof device - Google Patents
Elevator vibration-proof device Download PDFInfo
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- CN107640680B CN107640680B CN201710463311.5A CN201710463311A CN107640680B CN 107640680 B CN107640680 B CN 107640680B CN 201710463311 A CN201710463311 A CN 201710463311A CN 107640680 B CN107640680 B CN 107640680B
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- wire rope
- vibration
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- roller
- rollers
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Abstract
The invention provides an elevator anti-vibration device capable of inhibiting the vibration of a car caused by the vibration of a steel wire rope. An elevator vibration isolator having a wire rope vibration-stopping portion that suppresses vibration of a wire rope in a horizontal direction immediately before the wire rope enters a sheave or immediately after the wire rope leaves the sheave, the wire rope vibration-stopping portion comprising: a pair of rollers arranged to sandwich the wire rope without contacting the wire rope, and having axial directions thereof respectively oriented in a direction perpendicular to a traveling direction of the wire rope; and a shaft body provided corresponding to each roller and rotatably supporting the corresponding roller.
Description
Technical Field
The present invention relates to an elevator vibration isolation device, and is preferably applied to, for example, 2: 1 rope ratio type elevator apparatus.
Background
In a conventional elevator apparatus, when a car is lifted and lowered in a state where a wire rope for driving the car to be lifted and lowered vibrates due to an earthquake or strong wind, energy of the wire rope vibration is concentrated at an end portion of the wire rope in the vicinity of an uppermost layer or a lowermost layer, and thus the car vibrates largely, and as a result, passengers in the car feel uneasy.
As a method of suppressing such vibration of the car, for example, patent document 1 discloses an invention in which a plurality of wire rope vibration stoppers through which wire ropes are inserted and a bracket capable of supporting the wire rope vibration stoppers are provided in an upper portion of the car that moves up and down in a hoistway.
Patent document 3 discloses a dynamic vibration absorber for an elevator, which can suppress lateral vibration of a wire rope by converting vibration energy of the wire rope, which generates the lateral vibration, into elastic energy of an elastic body and then converting the elastic energy into vibration energy of a vibration absorbing mass body to absorb the vibration energy of the wire rope.
Documents of the prior art
Patent document
[ patent document 1 ] Japanese patent application laid-open No. 2009-18899
[ patent document 2 ] Japanese patent laid-open No. 2015-51856
[ patent document 3 ] Japanese patent laid-open No. 2015-
Disclosure of Invention
Technical problem to be solved by the invention
However, according to the invention disclosed in patent document 1, when the elevator apparatus is operated in a state where the wire rope is vibrated by an earthquake or strong wind, the wire rope in the wire rope vibration stopper may come into contact with the insertion hole through which the wire rope is inserted. Then, when the wire rope comes into contact with the insertion hole of the wire rope vibration stopper, vertical resistance is generated in the wire rope, which may hinder the wire rope from operating, damage or wear of the wire rope, and may cause various devices or equipment in the hoistway to be damaged by the collision of the wire rope.
In addition, when the invention disclosed in patent document 2 or patent document 3 is adopted, although the terminal end portion of the wire rope can be fixed to the car 1: in a 1-roping ratio elevator apparatus, a device for controlling the natural frequency of a wire rope or a dynamic vibration absorber is installed, but when a wire rope traveling in the elevator apparatus is hung on a suspension device installed at 2: the problem of structural impossibility of mounting the cage on the sheave of the cage with a rope winding ratio of 1 is caused.
The present invention has been made in view of the above problems, and an object of the present invention is to provide an elevator vibration damping device capable of suppressing car vibration caused by wire rope vibration.
Technical scheme for solving technical problem
In order to solve the above-described problems, an elevator vibration damping device according to the present invention is an elevator vibration damping device that suppresses vibration of a wire rope that is suspended from a sheave attached to a car of an elevator apparatus and that moves the car up and down, the elevator vibration damping device including a wire rope vibration damping portion that is disposed at a position in the car immediately before the wire rope enters the sheave or immediately after the wire rope leaves the sheave, and that suppresses vibration of the wire rope in a horizontal direction, the wire rope vibration damping portion including: a pair of rollers arranged to sandwich the wire rope without contacting the wire rope, and having axial directions perpendicular to a traveling direction of the wire rope; and a shaft body provided corresponding to each of the rollers and rotatably supporting the corresponding roller.
According to the elevator vibration damping device, vibration of the wire rope can be suppressed by the resin roller.
Effects of the invention
According to the present invention, an elevator vibration isolation device capable of suppressing car vibration caused by steel wire rope vibration can be realized.
Drawings
Fig. 1 is a diagram showing 2: side view of a schematic structure of a 1-wrap-ratio elevator apparatus.
Fig. 2 is a front view showing the structure of an elevator vibration damping device according to the present embodiment.
Fig. 3(a) is a plan view of a wire rope vibration-stopping portion provided in the elevator vibration-proofing device according to the present embodiment, (B) is a front view of the wire rope vibration-stopping portion, and (C) is a side view of the wire rope vibration-stopping portion.
Fig. 4 is a sectional view of a resin roller provided in a rope vibration stopping portion of an elevator vibration damping device according to an embodiment of the present invention.
Fig. 5 is a side view of the elevator vibration damping device according to the embodiment of the present invention as viewed from the direction B-B in fig. 2.
Detailed Description
An embodiment of the present invention will be described in detail with reference to the following drawings.
In fig. 1, 1 denotes an elevator apparatus according to the present embodiment as a whole. The elevator apparatus 1 includes a hoistway 2, a machine room 3, a hoisting machine 4, a wire rope 5, a car 6, a sheave 7, a counterweight 8, and a sheave 9.
The hoistway 2 is installed in a building and is a space in which the car 6 moves up and down. The machine room 3 is provided at the uppermost part of the hoistway 2. A hoisting machine 4 is disposed in the machine room 3, and a plurality of wire ropes 5 are wound around a traction sheave of the hoisting machine 4 (see fig. 3 a). One end side of each wire rope 5 wound around the hoisting machine 4 is fixed to the machine room 3 via a sheave 7 mounted on the car 6. The other end side of each wire rope 5 wound around the hoisting machine 4 is fixed to the machine room 3 via a pulley 9 attached to a counterweight 8.
The sheave 7 is rotatably disposed above the car 6. When the wire ropes 5 wound around the sheave 7 are wound up or rewound by the hoisting machine 4, the car 6 ascends or descends in conjunction with the winding. The sheave 9 is rotatably disposed above the counterweight 8. When the wire ropes wound around the sheave 9 are wound up or rewound by the hoisting machine 4, the counterweight 8 is raised or lowered in conjunction with the wire ropes.
Fig. 2 shows an elevator vibration damping device 10 of the present embodiment provided above a car 6. Fig. 2 shows a state in which the elevator vibration isolating device 10 is provided on the side where each wire rope 5 enters the sheave 7 (the right side as viewed from the sheave 7 in fig. 2) and on the side where each wire rope 5 exits from the sheave 7 (the left side as viewed from the sheave 7 in fig. 2).
As can be seen from fig. 2, the elevator vibration damping device 10 of the present embodiment includes: a bottom 12 fixed to an upper beam 11 of the car 6; a wire rope vibration stopper 13 fixed to the bottom 12; a plurality of elevating platforms 14 stacked on the wire rope vibration stopper 13; and another wire rope vibration stopper 13 further stacked on the elevating platforms 14. That is, the wire rope vibration stopper 13 and the raising table 14 are laminated in the traveling direction of the wire rope 5.
The bottom portion 12 has a function of suppressing transmission of vibration of the elevator vibration isolator 10 to the car 6, and is formed of an elastic body such as rubber, a coil spring, or a plate spring, for example. The wire rope vibration stopper 13 has a function of suppressing horizontal vibration generated in the wire rope 5. The specific structure of the wire rope vibration stopper 13 will be described in detail below.
The raising table 14 is hollow and has substantially the same outer shape and size as the wire vibration stopper 13, and is provided to adjust the interval between the 2 wire vibration stopper 13 by raising the height position of the uppermost wire vibration stopper 13 relative to the lowermost wire vibration stopper 13. Therefore, the raising table 14 can increase or decrease the number of layers. As the number of the stages 14 stacked increases, the distance between the 2 wire rope vibration stoppers 13 can be increased, and thus the vibration of the wire rope 5 can be easily suppressed. Further, by increasing or decreasing the number of the raising platforms 14, the total weight of the entire elevator vibration damping device 10 can be adjusted. Therefore, when the elevator vibration isolation apparatus 10 of the present embodiment is used as a dynamic vibration absorber, the natural frequency of the elevator vibration isolation apparatus 10 can be easily adjusted.
Fig. 3(a) to (C) show specific configurations of the wire rope vibration stopper. As shown in fig. 3(a) to (C), the wire rope vibration stopper 13 includes: a pair of resin rollers 15 each having a cylindrical shape; a pair of shaft bodies 16 that are fitted into respective center holes of the resin rollers 15 different from each other and that rotatably support the resin rollers 15; and a pair of support frames 17 each having a U-shaped cross section and supporting one end side or the other end side of the shaft bodies 16.
Each resin roller 15 is made of, for example, a resin material having an elastic force, and is configured by a plurality of roller portions 15A arranged in the axial direction thereof as shown in fig. 3 (a). As shown in fig. 3(B), long holes 19 are formed in the side walls of the support frames 17 at the same height positions corresponding to the 2 shaft bodies 16 and in parallel to the direction indicated by the arrow x. A screw portion (not shown) provided at an end portion of each shaft body 16 is fitted into a corresponding elongated hole 19 of the support frame 17 from the inside of the support frame 17, and a nut 18 is screwed to the screw portion from the outside of the support frame 17, whereby each shaft body 16 is fixed to the support frame 17. Therefore, each shaft body 16 is supported by the support frame 17 such that the axial direction of the corresponding resin roller 15 is positioned in the direction perpendicular to the traveling direction of the wire rope 5. At this time, the fixing positions of the shaft bodies 16 to the support frame 17 are adjusted so that the respective wire ropes 5 are sandwiched by the 2 resin rollers 15 from the direction perpendicular to the arrangement direction of the respective wire ropes 5 in a state where the respective wire ropes 5 are not in contact with each other, and the wire ropes 5 can pass between the 2 resin rollers 15 without being in contact with the resin rollers 15.
Therefore, when the wire rope 5 is not vibrated in the horizontal direction, the wire rope 5 can be prevented from interfering with the wire rope vibration stopper 13 during traveling, and when the wire rope 5 is vibrated in the horizontal direction, the wire rope 5 collides with the resin rollers 15 of the wire rope vibration stopper 13, and the vibration of the wire rope 5 can be suppressed.
Further, since the resin roller 15 is made of a resin material having elasticity, damage and abrasion of the wire rope 5 and the resin roller 15 due to collision with the wire rope 5 can be suppressed. Further, since the end portions of the shaft bodies 16 are fitted into the elongated holes 19 of the support frame 17 and fixed by the nuts 18, the resin rollers 15 can be moved in a direction in which the resin rollers 15 approach or separate from each other while being kept parallel, and the size of the gap between the resin rollers 15 can be easily adjusted according to the sway characteristics of the wire rope, which are different for each elevator apparatus.
Since each resin roller 15 is constituted by a plurality of roller portions 15A, the rotational moment of each roller portion 15A is small, and each roller portion 15A is easily rotated by that amount. Therefore, when the wire rope 5 collides with the resin roller 15 while traveling, the roller portions 15A easily rotate following the travel of the wire rope 5, and damage and wear of the wire rope 5 due to the collision can be suppressed.
Fig. 4 shows a cross-sectional structure of the resin roller 15 and the shaft body 16. As can be seen from fig. 4, the shaft body 16 is fitted into the rubber tube 20 so that the circumferential side surface thereof is covered with the rubber tube 20. Further, a gap 21 is provided between the rubber tube 20 and the surface of the center hole of the resin roller 15. Due to the presence of the gap 21, the resin roller 15 can easily rotate around the shaft body 16, and thus, even when the elevator apparatus 1 is operated in a state where the wire rope 5 vibrates, lateral sway in the horizontal direction can be suppressed, and the operational resistance in the vertical direction generated in the wire rope 5 can be suppressed by the rotation of the resin roller 15 which is easily rotated. Further, since the circumferential side surface of the shaft body 16 is covered with the rubber tube 20, it is possible to reduce noise caused by collision or interference between the surface of the center hole of the resin roller 15 and the shaft body 16, which is generated when the wire rope 5 collides with the resin roller 15.
Fig. 5 shows a connection structure of the bottom portion 12, the elevating platform 14, and the wire rope vibration suppressing portion 13. As shown in fig. 5, the raising table 14 is constituted by a pair of support frames 22 for raising, each having the same shape as the support frame 17 of the 1 st and 2 nd wire rope vibration preventing portions 13. The lowermost wire rope vibration suppressing unit 13 and the lowermost elevation table 14 are connected by fixing the support frames 17 of the wire rope vibration suppressing unit 13 to the elevation support frames 22 corresponding to the elevation table 14 by bolts 23 and nuts 24, the elevation tables 14 are connected by fixing the corresponding elevation support frames 22 to each other by bolts 23 and nuts 24, and the uppermost elevation table 14 and the uppermost wire rope vibration suppressing unit 13 are connected by fixing the elevation support frames 22 of the elevation table 14 to the corresponding support frames 17 of the wire rope vibration suppressing unit 13 by bolts 23 and nuts 24. Further, the lowermost wire rope vibration suppressing portion 13 is connected to the bottom portion 12 using a screw 25.
By adopting such a connection structure, the wire rope vibration stopper 13 and the raising table 14 can be freely added or reduced, and the arrangement thereof can be freely changed. For example, although the wire rope vibration suppressing portions 13 are respectively disposed on both sides in the vertical direction of the plurality of raising platforms 14 in fig. 5, a configuration may be adopted in which the wire rope vibration suppressing portions 13 are additionally inserted between the plurality of raising platforms 14. In this way, since the number of the wire rope vibration stopping portions 13 and the elevating platforms 14 can be changed, it is possible to easily cope with the sway characteristics of different wire ropes for each elevator apparatus.
Further, since the elevator vibration damping device 10 of the present embodiment is fixed to the car 6 via the bottom portion 12 made of an elastic material, it can function as a dynamic vibration absorber.
At this time, by changing the number of the bottom portion 12 or the number of the wire rope vibration stopping portions 13 and the height increasing bases 14, the natural frequency of the elevator vibration isolation device 10 as the dynamic vibration absorber formed from the relationship between the spring constant of the bottom portion 12 and the total weight of the wire rope vibration stopping portions 13 and the height increasing bases 14 can be easily changed. By making the natural frequency of the elevator vibration isolation device 10 close to the natural frequency of the car 6 caused by the vibration of the steel wire ropes 5, the vibration of the car 6 can be reduced.
According to the elevator vibration damping device 10 of the present embodiment having the above configuration, the vibration damping device can be configured to have a structure in which 2: in the elevator apparatus 1 of the present embodiment having the 1-roping ratio structure, vibration of the car 6 due to vibration of the wire rope 5 is suppressed.
In the above-described embodiment, the case where 3 raised platforms 14 are provided between 2 wire rope vibration stopping portions 13 in the elevator vibration damping device 10 has been described, but the present invention is not limited to this, and the number of raised platforms 14 may be 2 or 4 or more, or wire rope vibration stopping portions 13 may be added between the raised platforms 14.
In the above-described embodiment, the case where the resin roller 15 is formed of a resin material having elasticity has been described, but the present invention is not limited to this, and the resin roller 15 may be formed by forming the resin roller 15 with another resin material or by coating a resin material on the surface of a roller formed using a material other than the resin material.
In the above-described embodiment, the resin roller 15 (fig. 3 a) is configured by 3 roller parts 15A, but the present invention is not limited to this, and may be configured by 2 or 4 or more roller parts 15A.
In the above-described embodiment, the case where the vertical cross section of the support frame 17 of the wire rope vibration damping unit 13 and the raising support frame 22 of the raising table 14 is formed in a U shape has been described, but the present invention is not limited thereto, and other configurations can be widely used.
In the above-described embodiment, the case where the elevation base 14 is configured by the pair of support frames 22 for elevation each having a U-shaped vertical cross section has been described, but the present invention is not limited to this, and various other configurations can be widely used as the configuration of the elevation base 14 as long as the roller vibration prevention unit 13 can be elevated.
Industrial applicability of the invention
The present invention can be applied to 2: 1 rope ratio type elevator apparatus.
Description of the reference symbols
1 Elevator device
2 well
3 machine room
4 traction machine
5 Steel wire rope
6 cage
7 pulley
8 counterweight
9 Pulley
10 Elevator vibration isolator
11 Upper beam
12 bottom
13 steel wire rope vibration stopping part
14 heightening table
15 resin roller
15A roller part
16-shaft
17 support frame
18 nut
19 long hole
20 rubber tube
21 gap
22 support frame for lifting
23 bolt
24 nut
25 screws.
Claims (5)
1. An elevator vibration isolator for suppressing vibration of a wire rope which is hung on a sheave attached to a car of an elevator apparatus and which lifts and lowers the car,
a wire rope vibration prevention unit that suppresses vibration of the wire rope in a horizontal direction, the wire rope vibration prevention unit being disposed in the car at a position immediately before the wire rope enters the sheave or at a position immediately after the wire rope leaves the sheave,
the wire rope vibration stopping portion includes:
a pair of rollers arranged to sandwich the wire rope without contacting the wire rope, and having axial directions perpendicular to a traveling direction of the wire rope; and
a shaft body provided in correspondence with each of the rollers and rotatably supporting the corresponding roller, the shaft body being capable of moving the rollers in a direction in which the rollers approach or separate from each other while keeping the rollers parallel to each other,
the shaft body is embedded into the roller, and a gap is formed between the shaft body and the surface of the center hole of the roller, so that the roller can rotate around the shaft body.
2. An elevator vibration isolator as defined in claim 1, wherein each of said rollers is formed of a plurality of roller portions coaxially aligned in said axial direction.
3. An elevator vibration isolator as defined in claim 1, wherein said roller is formed of a resin material having elasticity.
4. The elevator vibration isolator according to claim 1, wherein a plurality of the wire rope vibration stopper portions are stacked in a traveling direction of the wire rope.
5. An elevator vibration isolator as defined in claim 4, wherein 1 or more raising platforms are provided between said wire rope vibration stoppers to raise said wire rope vibration stoppers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-142594 | 2016-07-20 | ||
| JP2016142594A JP6591362B2 (en) | 2016-07-20 | 2016-07-20 | Elevator vibration prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107640680A CN107640680A (en) | 2018-01-30 |
| CN107640680B true CN107640680B (en) | 2020-03-27 |
Family
ID=61019848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710463311.5A Active CN107640680B (en) | 2016-07-20 | 2017-06-19 | Elevator vibration-proof device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6591362B2 (en) |
| CN (1) | CN107640680B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303064B (en) * | 2018-02-07 | 2020-07-17 | 北京北铃专用汽车有限公司 | Pavement deflection rapid detection vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005047630A (en) * | 2003-07-29 | 2005-02-24 | Toshiba Elevator Co Ltd | Feeder cable guide device of elevator |
| JP4776281B2 (en) * | 2005-06-23 | 2011-09-21 | 東芝エレベータ株式会社 | Elevator rope damping device and rope damping device mounting structure |
| JP5773673B2 (en) * | 2011-02-04 | 2015-09-02 | 東芝エレベータ株式会社 | Elevator system with rope crossing detector |
| JP2016210583A (en) * | 2015-05-12 | 2016-12-15 | 東芝エレベータ株式会社 | elevator |
-
2016
- 2016-07-20 JP JP2016142594A patent/JP6591362B2/en active Active
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2017
- 2017-06-19 CN CN201710463311.5A patent/CN107640680B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018012574A (en) | 2018-01-25 |
| CN107640680A (en) | 2018-01-30 |
| JP6591362B2 (en) | 2019-10-16 |
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