JPS5832038Y2 - Combination vibration absorber - Google Patents
Combination vibration absorberInfo
- Publication number
- JPS5832038Y2 JPS5832038Y2 JP10916278U JP10916278U JPS5832038Y2 JP S5832038 Y2 JPS5832038 Y2 JP S5832038Y2 JP 10916278 U JP10916278 U JP 10916278U JP 10916278 U JP10916278 U JP 10916278U JP S5832038 Y2 JPS5832038 Y2 JP S5832038Y2
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- mechanical device
- vibration absorber
- mechanical
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Vibration Prevention Devices (AREA)
Description
【考案の詳細な説明】
この考案は、機械装置の振動を低減させるための組合せ
吸振装置に関するものである。[Detailed Description of the Invention] This invention relates to a combination vibration absorbing device for reducing vibrations of mechanical equipment.
一般に機械装置の振動を低減させる手段として、第1図
に示すものか゛知られている。2. Description of the Related Art In general, the method shown in FIG. 1 is known as a means for reducing vibrations of mechanical devices.
第1図において、1は機械装置、2は機械装置1を設置
する床、3は機械装置1の底部と床2との間に介入させ
て機械装置1を支持する防振ゴムである。In FIG. 1, 1 is a mechanical device, 2 is a floor on which the mechanical device 1 is installed, and 3 is a vibration-proof rubber that is interposed between the bottom of the mechanical device 1 and the floor 2 to support the mechanical device 1.
このような構成の防振手段は、機械装置で振動が発生す
る場合に、この振動を床2に伝達させないようにし、あ
るいは機械装置1自体の振動を低レベルに抑えるため、
さらには他の場所の振動が床2から機械装置1に伝わら
ないようにするために用いられる。The vibration isolating means having such a structure prevents the vibration from being transmitted to the floor 2 when vibration occurs in the mechanical device, or suppresses the vibration of the mechanical device 1 itself to a low level.
Furthermore, it is used to prevent vibrations from other places from being transmitted from the floor 2 to the mechanical device 1.
なお、機械装置1は剛体として考え、第1図中の矢印は
振動の方向を示す。Note that the mechanical device 1 is considered as a rigid body, and the arrows in FIG. 1 indicate the directions of vibration.
しがし、前記のように防振ゴム3を用いても、機械装置
1の振動が要求される値より大きい場合や、防振ゴム3
を用いることによって床2には振動が伝わらないように
なったが機械装置1の振動が逆に大きくなる場合には、
第2図から第4図に示すように、片持梁4と錘5とを組
合せた吸振器(ダイナミックダンパ)6が防振ゴム3と
共に使用される。However, even if the vibration isolating rubber 3 is used as described above, there may be cases where the vibration of the mechanical device 1 is larger than the required value, or when the vibration isolating rubber 3 is used.
By using this, vibrations are not transmitted to the floor 2, but if the vibrations of the mechanical device 1 become large,
As shown in FIGS. 2 to 4, a vibration absorber (dynamic damper) 6, which is a combination of a cantilever beam 4 and a weight 5, is used together with the vibration isolating rubber 3.
一般に、機械装置1から発生する振動の周波数をf。Generally, the frequency of vibration generated from the mechanical device 1 is f.
とすると、機械装置1と防振ゴム3とで形成する固有振
動数f1との間には、
fl(fO
という関係がある。Then, there is a relationship fl(fO) between the natural frequency f1 formed by the mechanical device 1 and the vibration isolating rubber 3.
従って、第2図に示す吸振器6にもたせる固有振動数は
、はぼ片持梁4と錘5とによって調整可能であり、前記
振動数f1と一致させることによって、吸振器6が動作
することになる。Therefore, the natural frequency given to the vibration absorber 6 shown in FIG. 2 can be adjusted by the cantilever beam 4 and the weight 5, and the vibration absorber 6 can be operated by making it match the frequency f1. become.
従来、機械装置1と吸振器6との組合せは、一般に第2
図のように機械装置1の中央付近に吸振器6を取付ける
構造にしており、機械装置1の構造上その中央に吸振器
を取付けることが不可能な場合には、第3図に例示する
ように機械装置1の一側部上に片持梁4および錘5を設
けていた。Conventionally, the combination of the mechanical device 1 and the vibration absorber 6 is generally
As shown in the figure, the vibration absorber 6 is installed near the center of the mechanical device 1. If it is impossible to install the vibration absorber in the center due to the structure of the mechanical device 1, the structure shown in FIG. A cantilever beam 4 and a weight 5 were provided on one side of the mechanical device 1.
これによって、多くの場合に機械装置1の振動を低減さ
せることができるが、振動を微小に抑えることか不十分
な場合がある。Although this can reduce the vibration of the mechanical device 1 in many cases, there are cases where it is insufficient to suppress the vibration to a minute level.
この理由を第4図を用いて説明すると、同図において吸
振器6を取付ける部分は、吸振器の作用によって振動モ
ードの節となり、振動が小さくなるが、これと対称位置
の振動が大きく、全体としては第4図の破線に示すよう
な振動をする。The reason for this can be explained using Fig. 4. In the figure, the part where the vibration absorber 6 is attached becomes a node of the vibration mode due to the action of the vibration absorber, and the vibration becomes small, but the vibration at the symmetrical position is large, and the whole As a result, it vibrates as shown by the broken line in Figure 4.
従って、この考案は、前記のような吸振器を適切な位置
に増設することにより、振動を十分に低減させることを
目的とするもので゛ある。Therefore, the purpose of this invention is to sufficiently reduce vibrations by adding vibration absorbers such as those described above at appropriate positions.
以下この考案の一実施例を第5図、第6図に基いて説明
する。An embodiment of this invention will be described below with reference to FIGS. 5 and 6.
これらの図において、1は機械装置、2は床、3は防振
ゴム、6は片持梁4に錘5を取付けた吸振器で、これら
は吸振器6を設置する位置および個数を除き、第2図、
第3図のものと同様である。In these figures, 1 is a mechanical device, 2 is a floor, 3 is a vibration isolator, and 6 is a vibration absorber with a weight 5 attached to a cantilever beam 4. Figure 2,
It is similar to that in FIG.
そして、前記吸振器6は、機械装置1の上面からみてそ
の重心Gを通る直線上で、この重心Gに対して対称な位
置の機械装置1内の上部に2個配置しである。The two vibration absorbers 6 are arranged at the upper part of the mechanical device 1 at symmetrical positions with respect to the center of gravity G on a straight line passing through the center of gravity G of the mechanical device 1 when viewed from the top surface of the mechanical device 1.
前述のように吸振器6を配設したので、第6図に示す2
個の吸振器6を並べた方向と平行な振動方向の場合は勿
論、これと直角な振動方向の場合でも、それぞれの吸振
器6を取付けた2個所の振動が吸収されるので、機械装
置1の振動を効率よく低減させることができる。Since the vibration absorber 6 is arranged as described above, the 2 shown in FIG.
Not only in the case of a vibration direction parallel to the direction in which the vibration absorbers 6 are arranged, but also in the case of a vibration direction perpendicular to this direction, the vibrations at the two locations where each vibration absorber 6 is attached are absorbed, so the mechanical device 1 vibration can be efficiently reduced.
なお、この考案において、第5図、第6図のものは吸振
器6を2個設けたが、振動の低減量をさらに高くしたい
場合には吸振器を増加してもよく、また、この場合に上
面からみて重心Gを通る直線上に複数個対称に設けると
効果的である。In this invention, two vibration absorbers 6 are provided in the ones shown in FIGS. 5 and 6, but if it is desired to further reduce the amount of vibration, the number of vibration absorbers may be increased. It is effective to provide a plurality of them symmetrically on a straight line passing through the center of gravity G when viewed from above.
以上説明したようにこの考案は、吸振器を機械装置の重
心に対して対称な位置の機械装置内上部に複数個設けた
ことにより、機械装置の振動を効率よく十分に低減させ
ることができる効果がある。As explained above, this invention has the effect of being able to efficiently and sufficiently reduce the vibration of mechanical equipment by installing multiple vibration absorbers at the upper part of the mechanical equipment at symmetrical positions with respect to the center of gravity of the equipment. There is.
第1図は防振ゴムを用いて機械装置を設置した一例を示
す正面図、第2図、第3図は従来の機械装置の組合せ吸
振装置の互に異なった例をそれぞれ示す正面図、第4図
は第3図の吸振装置の上面図、第5図および第6図はこ
の考案の一実施例による吸振装置を示す正面図および平
面図である。
1・・・・・・機械装置、2・・・・・・床、3・・・
・・・防振ゴム、4・・・・・・片持梁、5・・・・・
・錘、6・・・・・・防振器。
なお、図中同一符号は同一または相当部分を示す。Fig. 1 is a front view showing an example of a mechanical device installed using vibration isolating rubber, and Figs. 2 and 3 are front views showing different examples of conventional combination vibration absorbing devices for mechanical devices. 4 is a top view of the vibration absorbing device shown in FIG. 3, and FIGS. 5 and 6 are a front view and a plan view showing the vibration absorbing device according to an embodiment of this invention. 1... Mechanical equipment, 2... Floor, 3...
... Anti-vibration rubber, 4 ... Cantilever beam, 5 ...
- Weight, 6... Vibration isolator. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (2)
を取付けた吸振器を、機械装置の重心に対して対称な位
置に複数個設けたことを特徴とする組合せ吸振装置。(1) A combination vibration absorbing device characterized in that a plurality of vibration absorbers each having a weight attached to a cantilever beam supported at one end are installed in the upper part of the mechanical device at symmetrical positions with respect to the center of gravity of the mechanical device. .
通る直線上に配設されていることを特徴とする実用新案
登録請求の範囲第1項記載の組合せ吸振装置。(2) The combination vibration absorbing device according to claim 1, wherein the vibration absorbing device is arranged on a straight line passing through the center of gravity of the mechanical device when viewed from the top surface of the mechanical device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10916278U JPS5832038Y2 (en) | 1978-08-08 | 1978-08-08 | Combination vibration absorber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10916278U JPS5832038Y2 (en) | 1978-08-08 | 1978-08-08 | Combination vibration absorber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5526145U JPS5526145U (en) | 1980-02-20 |
JPS5832038Y2 true JPS5832038Y2 (en) | 1983-07-15 |
Family
ID=29054869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10916278U Expired JPS5832038Y2 (en) | 1978-08-08 | 1978-08-08 | Combination vibration absorber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5832038Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5767489A (en) * | 1980-10-16 | 1982-04-24 | Tokyo Shibaura Electric Co | Winch for elevator |
-
1978
- 1978-08-08 JP JP10916278U patent/JPS5832038Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5526145U (en) | 1980-02-20 |
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