JPH0510534B2 - - Google Patents

Info

Publication number
JPH0510534B2
JPH0510534B2 JP3769385A JP3769385A JPH0510534B2 JP H0510534 B2 JPH0510534 B2 JP H0510534B2 JP 3769385 A JP3769385 A JP 3769385A JP 3769385 A JP3769385 A JP 3769385A JP H0510534 B2 JPH0510534 B2 JP H0510534B2
Authority
JP
Japan
Prior art keywords
oil
piston rod
cylinder
lid
oil case
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 - Lifetime
Application number
JP3769385A
Other languages
Japanese (ja)
Other versions
JPS61197831A (en
Inventor
Izumi Tamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanwa Tekki Corp
Original Assignee
Sanwa Tekki Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanwa Tekki Corp filed Critical Sanwa Tekki Corp
Priority to JP3769385A priority Critical patent/JPS61197831A/en
Publication of JPS61197831A publication Critical patent/JPS61197831A/en
Publication of JPH0510534B2 publication Critical patent/JPH0510534B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、原子力発電所等において、配管系
等の機器を支持する油圧防振器に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a hydraulic vibration isolator that supports equipment such as piping systems in nuclear power plants and the like.

(従来の技術) シリンダの両端をポペツト弁およびオイルリザ
ーバを介して連通し、油圧抵抗でピストンロツド
を制動することにより防振作用を行う形式の油圧
防振器が知られている。この防振器においては、
オイルリザーバがシリンダの外部に別個に取付け
られ、これとシリンダとは送油管等により連結さ
れている。
(Prior Art) A hydraulic vibration isolator is known in which both ends of a cylinder are communicated through a poppet valve and an oil reservoir, and a vibration isolating effect is achieved by braking a piston rod with hydraulic resistance. In this vibration isolator,
An oil reservoir is separately attached to the outside of the cylinder, and is connected to the cylinder by an oil feed pipe or the like.

(発明が解決しようとする問題点) 上記従来の防振器にあつては、ピストンロツド
の変位によりシリンダ内の油圧が変化するため、
ピストンロツドの摺動部等のシール部から油もれ
が生じ易く、また油もれ防止のため、ゴム製のシ
ール部材を用いると、それの経年劣化が著しいた
め、ひんぱんな保守点検を要するという問題点が
ある。本発明は、このような従来の問題点を解決
しようとするものである。
(Problems to be Solved by the Invention) In the conventional vibration isolator described above, the hydraulic pressure inside the cylinder changes due to the displacement of the piston rod.
Oil leaks easily from seals such as the sliding parts of piston rods, and if a rubber seal member is used to prevent oil leaks, it deteriorates significantly over time, requiring frequent maintenance and inspection. There is a point. The present invention attempts to solve these conventional problems.

(問題点を解決するための手段) 本発明においては、上記問題点を解決するた
め、引手3を備えた油ケース1内にシリンダ5を
固定して、このシリンダ5を油0中に沈め、シリ
ンダ5の両側部には夫々油通路6a,7bを形成
してこれらにポペツト弁9,11を取付け、引手
15を備えるピストンロツド14とシリンダふた
7との摺動部を油中に配置し、シリンダふた7の
ピストンロツド貫通孔7a内周には金属製の内張
りリング12を嵌合し、ピストンロツド14を包
囲する金属製のベローズ16の一端をシリンダふ
た7のピストンロツド貫通孔7a周縁に気密に固
着し、それの他端をピストンロツド14外周に気
密に固着した。
(Means for Solving the Problems) In the present invention, in order to solve the above problems, a cylinder 5 is fixed in an oil case 1 equipped with a handle 3, and this cylinder 5 is submerged in oil 0, Oil passages 6a and 7b are formed on both sides of the cylinder 5, and poppet valves 9 and 11 are attached to these, and the sliding parts of the piston rod 14 with the handle 15 and the cylinder lid 7 are placed in oil, and the cylinder A metal lining ring 12 is fitted to the inner periphery of the piston rod through hole 7a of the lid 7, and one end of a metal bellows 16 surrounding the piston rod 14 is hermetically fixed to the periphery of the piston rod through hole 7a of the cylinder lid 7. The other end of the piston rod 14 was hermetically fixed to the outer periphery of the piston rod 14.

(作用) 油ケース1またはピストンロツド14の引手
3,15を夫々配管系または構築物に連結した場
合において、配管系と構築物との間に熱膨張等に
よる緩慢な変位が生じると、ピストンロツド14
がシリンダ5に対してゆつくりと出入りし、シリ
ンダ5内の油0は、油通路6a,7bのポペツト
弁9,11を介して油ケース1へと出入りし、変
位を妨げない。これに対して地震等により、配管
系と構築物との間に急激な変位が生じ、ピストン
ロツド14が急激に出入り動すると、油通路6
a,7bを通る油量が急増し、ポペツト弁9,1
1が閉じて油の流れを阻止する。これにより防振
作用を行う。シリンダ5は、油ケース1内の油中
に沈められているので油もれを考慮する必要がな
い。油ケース1内の油圧はほとんど変化せず、ま
た摺動部等がないので、油もれが生じない。内張
りリング12は金属製であるから、劣化しない。
(Function) When the handles 3 and 15 of the oil case 1 or the piston rod 14 are respectively connected to a piping system or a structure, if a slow displacement occurs between the piping system and the structure due to thermal expansion or the like, the piston rod 14
slowly moves in and out of the cylinder 5, and the oil 0 in the cylinder 5 moves in and out of the oil case 1 via the poppet valves 9, 11 of the oil passages 6a, 7b, without interfering with displacement. On the other hand, if a sudden displacement occurs between the piping system and the structure due to an earthquake or the like, and the piston rod 14 suddenly moves in and out, the oil passage 6
The amount of oil passing through a and 7b increases rapidly, and the poppet valves 9 and 1
1 closes and blocks the flow of oil. This provides an anti-vibration effect. Since the cylinder 5 is submerged in the oil in the oil case 1, there is no need to consider oil leakage. The oil pressure inside the oil case 1 hardly changes, and since there are no sliding parts, no oil leaks occur. Since the inner ring 12 is made of metal, it does not deteriorate.

(実施例) 円筒状の油ケース1は、一端ふた2の外側に引
手3を有し、この引手3を介して配管系または構
築物へ連結される。油ケース1の他端ふた4に
は、ピストンロツド貫通孔4aが形成されてい
る。
(Example) A cylindrical oil case 1 has a handle 3 on the outside of a lid 2 at one end, and is connected to a piping system or a structure via the handle 3. A piston rod through hole 4a is formed in the other end cover 4 of the oil case 1.

シリンダ5は、両端ふた6,7と、シリンダチ
ユーブ8とから成る。一端ふた6は、油ケース一
端ふた2の内側に小径部2aを介在させて、これ
と一体に形成され、ふた2よりも小径で、その周
辺油ケース1との間に環状の間隙を残して設置さ
れている。ふた6には、シリンダ5の内外を通じ
る油通路6aが形成され、これにポペツト弁9が
取付けられている。他端ふた7は、一端ふた6と
の間に、シリンダチユーブ8を挟み、タイロツド
10によつてこれを締付けている。ふた7は、中
央にピストンロツド貫通孔7aを、また側部に油
通路7bを有し、油通路7bにはポペツト弁11
が取付けられている。ピストンロツド貫通孔7a
の内周には、金属製の内張りリング12が嵌合さ
れている。
The cylinder 5 consists of both end covers 6 and 7 and a cylinder tube 8. The one end lid 6 is formed integrally with the oil case one end lid 2 with a small diameter portion 2a interposed inside the oil case end lid 2, and has a smaller diameter than the lid 2, leaving an annular gap between it and the surrounding oil case 1. is set up. An oil passage 6a communicating between the inside and outside of the cylinder 5 is formed in the lid 6, and a poppet valve 9 is attached to the oil passage 6a. The cylinder tube 8 is sandwiched between the other end lid 7 and the one end lid 6, and is tightened by a tie rod 10. The lid 7 has a piston rod through hole 7a in the center and an oil passage 7b on the side, and the oil passage 7b has a poppet valve 11.
is installed. Piston rod through hole 7a
A metal lining ring 12 is fitted onto the inner periphery of the ring.

シリンダ5内に挿入されたピストン13は、そ
の両側に2つの油室を形成している。ピストンロ
ツド14は、シリンダ5および油ケース1のふた
7,4を夫々摺動自在に貫通して外方へ延出し、
一端に引手15を有する。
The piston 13 inserted into the cylinder 5 forms two oil chambers on both sides thereof. The piston rod 14 slides through the cylinder 5 and the lids 7 and 4 of the oil case 1, respectively, and extends outward.
It has a handle 15 at one end.

金属製のベローズ16は、ピストンロツド14
を包囲し、その一端は油ケースふた4のピストン
ロツド貫通孔4a周縁に、また他端はピストンロ
ツド14に夫々気密に固着されている。
The metal bellows 16 is connected to the piston rod 14.
One end is hermetically fixed to the periphery of the piston rod through hole 4a of the oil case lid 4, and the other end is hermetically fixed to the piston rod 14.

17はピストンロツド14に固着された筒状カ
バーである。
17 is a cylindrical cover fixed to the piston rod 14.

油0は、油ケース1内に、シリンダ5が浸され
るまで入れられている。
Oil 0 is put into the oil case 1 until the cylinder 5 is immersed.

(発明の効果) この発明においては、シリンダ5が密閉された
油ケース1内の油0中に沈められているので、シ
リンダ5からの油もれを考慮する必要がない。油
ケース1内の油圧はあまり変化せず、また金属製
ベローズ16によりピストンロツド14との摺動
部が密閉されているので油ケース1からの油もれ
は生じにくい。このため油の補給のための保守点
検を省略することができる。シリンダふた7の貫
通孔7aとピストンロツド14との厳密なシール
を必要としないから、シール材として金属製の内
張りリング12を用いることができ、このため、
シール部材の劣化のおそれがなく、保守点検を省
略することができるという効果を有する。
(Effects of the Invention) In the present invention, since the cylinder 5 is submerged in oil in the sealed oil case 1, there is no need to consider oil leakage from the cylinder 5. The oil pressure in the oil case 1 does not change much, and since the sliding part with the piston rod 14 is sealed by the metal bellows 16, oil leakage from the oil case 1 is unlikely to occur. Therefore, maintenance and inspection for oil replenishment can be omitted. Since a strict seal between the through hole 7a of the cylinder lid 7 and the piston rod 14 is not required, the metal lining ring 12 can be used as a sealing material.
This has the advantage that there is no risk of deterioration of the sealing member and maintenance and inspection can be omitted.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の実施の一例を示す断面図であ
る。 1……油ケース、2……ふた、3……引手、4
……ふた、5……シリンダ、6……ふた、6a…
…油通路、7……ふた、7a……ピストンロツド
貫通孔、7b……油通路、9……ポペツト弁、1
1……ポペツト弁、13……ピストン、14……
ピストンロツド、15……引手、16……ベロー
ズ、0……油。
The drawing is a sectional view showing an example of implementation of the present invention. 1...oil case, 2...lid, 3...handle, 4
...Lid, 5...Cylinder, 6...Lid, 6a...
...Oil passage, 7...Lid, 7a...Piston rod through hole, 7b...Oil passage, 9...Poppet valve, 1
1...poppet valve, 13...piston, 14...
Piston rod, 15...handle, 16...bellows, 0...oil.

Claims (1)

【特許請求の範囲】[Claims] 1 一端ふたの外側に引手を備え他端ふたにはピ
ストンロツドの貫通孔を備えた油ケースと、油ケ
ースの油中に沈むように油ケース内に固定され両
側に夫々ポペツト弁を介して油ケースに通じる油
通路を有するシリンダと、シリンダ内に挿入され
たピストンと、シリンダの一端ふたおよび油ケー
スの他端ふたを摺動自在に貫通し外方端に引手を
有するピストンロツドと、シリンダ一端ふたのピ
ストンロツド貫通孔の内周に嵌合された金属製内
張りリングと、ピストンロツドを包囲し一端が油
ケース他端ふたのピストンロツド貫通孔周縁に他
端がピストンロツドに夫々気密に固着された金属
製のベローズとを具備した油圧防振器。
1 An oil case with a handle on the outside of the lid at one end and a through hole for a piston rod on the other end, and an oil case that is fixed in the oil case so as to be submerged in the oil in the oil case and connected to the oil case through poppet valves on both sides. A cylinder having a communicating oil passage, a piston inserted into the cylinder, a piston rod that slidably passes through one end of the cylinder and the other end of the oil case lid and has a handle at the outer end, and a piston rod of the one end of the cylinder. A metal lining ring fitted on the inner periphery of the through hole, and a metal bellows that surrounds the piston rod and has one end attached to the oil case and the other end lid on the periphery of the piston rod through hole, and the other end hermetically fixed to the piston rod. Equipped with hydraulic vibration isolator.
JP3769385A 1985-02-28 1985-02-28 Hydraulic vibration preventing device Granted JPS61197831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3769385A JPS61197831A (en) 1985-02-28 1985-02-28 Hydraulic vibration preventing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3769385A JPS61197831A (en) 1985-02-28 1985-02-28 Hydraulic vibration preventing device

Publications (2)

Publication Number Publication Date
JPS61197831A JPS61197831A (en) 1986-09-02
JPH0510534B2 true JPH0510534B2 (en) 1993-02-10

Family

ID=12504634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3769385A Granted JPS61197831A (en) 1985-02-28 1985-02-28 Hydraulic vibration preventing device

Country Status (1)

Country Link
JP (1) JPS61197831A (en)

Also Published As

Publication number Publication date
JPS61197831A (en) 1986-09-02

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