JPS6246025Y2

JPS6246025Y2 -

Info

Publication number: JPS6246025Y2
Application number: JP11715683U
Authority: JP
Priority date: 1983-07-29
Filing date: 1983-07-29
Publication date: 1987-12-10
Also published as: JPS6026386U

Description

【考案の詳細な説明】本考案は、発電所や化学プラント等において、
配管系等の被支持体と構築物等の支持体との間に
介設される油圧防振器に関する。[Detailed explanation of the invention] This invention is used in power plants, chemical plants, etc.
The present invention relates to a hydraulic vibration isolator interposed between a supported body such as a piping system and a supporting body such as a structure.

従来の油圧防振器は、シリンダと、これに出入
自在のピストン杆を有するもので、シリンダ端部
およびピストン杆端部のいずれか一方を被支持体
へ、他方を支持体へ夫々連結して用いる。シリン
ダ内はピストンにより２つの油室に区画され、両
油室間は急激な油の流れを阻止する弁装置および
オイルタンクを介して互いに連通されている。 A conventional hydraulic vibration isolator has a cylinder and a piston rod that can be moved in and out of the cylinder, and one of the cylinder end and the piston rod end is connected to a supported body, and the other is connected to a support body. use The inside of the cylinder is divided into two oil chambers by a piston, and the two oil chambers are communicated with each other via a valve device that prevents rapid oil flow and an oil tank.

このような従来の油圧防振器にあつては、ピス
トン杆に防振器の自重による鉛直方向の力と被支
持体の変位による圧縮力とが加わるため、座屈の
おそれがある。また単一シリンダをピストンによ
り区画するため、両油室の容積が異なり、これを
カバーするために油タンクを介設する必要があ
る。この油タンクは油もれが生じ易く、維持管理
に手数を要する等の問題点がある。 In such a conventional hydraulic vibration isolator, there is a risk of buckling because a vertical force due to the vibration isolator's own weight and a compressive force due to displacement of the supported body are applied to the piston rod. Furthermore, since a single cylinder is divided by a piston, the volumes of both oil chambers are different, and it is necessary to provide an oil tank to cover this. This oil tank has problems such as being prone to oil leaks and requiring a lot of effort to maintain and manage.

本考案はこのような従来の問題点に着目してな
されたもので、互いに軸線方向出入自在に組合さ
れたアウタパイプとインナパイプのいずれか一方
を支持体に他方を被支持体に結合可能とし、アウ
タパイプの外側に相対向して１対の環状のシリン
ダを固着し、これらシリンダに、互いに環状に結
合して配置した複数のピストン杆の両端ピストン
を挿入すると共に、これらピストン杆をインナパ
イプに連結することにより、ピストン杆にかかる
装置の自重の影響をなくしてピストン杆圧縮時の
座屈を防止すると共に、オイルタンクを省略して
維持管理の容易な油圧防振器を提供することを目
的としている。 The present invention has been developed by focusing on such conventional problems, and it is possible to connect one of an outer pipe and an inner pipe, which are combined so as to be able to move in and out of each other in the axial direction, to a support and the other to a supported body, A pair of annular cylinders are fixed to the outside of the outer pipe so as to face each other, and pistons at both ends of a plurality of piston rods arranged in an annular manner are inserted into these cylinders, and these piston rods are connected to the inner pipe. By doing so, the purpose is to eliminate the influence of the weight of the device on the piston rod and prevent buckling when the piston rod is compressed, and to provide a hydraulic vibration isolator that is easy to maintain and manage by omitting the oil tank. There is.

以下図について本考案の実施例を説明する。図
において１はアウタパイプ、２はこれに軸線方向
出入自在に挿入されたインナパイプで、アウタパ
イプ１およびインナパイプ２のいずれか一方が配
管等の被支持体へ、他方が構築物等の支持体へ連
結される。 Embodiments of the present invention will be described below with reference to the figures. In the figure, 1 is an outer pipe, and 2 is an inner pipe inserted into the outer pipe so as to be able to move in and out in the axial direction.One of the outer pipe 1 and the inner pipe 2 is connected to a supported body such as piping, and the other is connected to a supporting body such as a structure. be done.

アウタパイプ１の中間部には軸線方向に沿つた
長孔３が設けられている。またアウタパイプ１の
外側には、相互に間隔をおいて対向する１対の環
状のシリンダ４，４が固着されている。両シリン
ダ４，４間は、急激な油の流れを阻止する弁装置
５を介して送油管６で連通されている。 A long hole 3 is provided in the middle portion of the outer pipe 1 along the axial direction. Further, a pair of annular cylinders 4, 4 are fixed to the outside of the outer pipe 1, and are opposed to each other with a space therebetween. The two cylinders 4 are communicated with each other by an oil feed pipe 6 via a valve device 5 that prevents rapid oil flow.

アウタパイプ１の外側、両シリンダ４，４間に
は、リング７が摺動自在に被挿されている。この
リング７は、アウタパイプの長孔３を移動自由に
貫通するピン８の如き連結部材によりインナパイ
プ２に連結されている。 A ring 7 is slidably inserted between the two cylinders 4 on the outside of the outer pipe 1. This ring 7 is connected to the inner pipe 2 by a connecting member such as a pin 8 that freely passes through the long hole 3 of the outer pipe.

リング７の両側には筒状部材９，９が固着され
ている。この筒状部材９は切込溝１０により複数
に分割された断面円弧状のピストン杆１１を備え
ている。各ピストン杆１１は夫々シリンダ４のふ
た４ａを貫通してシリンダ４内に出入自在に挿入
され、シリンダ４内において環状のピストン１２
に結合している。 Cylindrical members 9, 9 are fixed to both sides of the ring 7. This cylindrical member 9 is provided with a piston rod 11 having an arcuate cross section and divided into a plurality of parts by cut grooves 10 . Each piston rod 11 passes through the lid 4a of the cylinder 4 and is inserted into and out of the cylinder 4, and an annular piston 12 is inserted into the cylinder 4.
is combined with

次に作用を説明する。この油圧防振器は、アウ
タシリンダ１またはインナシリンダ２のいずれか
一方を配管等の被支持体へ他方を構築物等の支持
体へ連結して用いる。いま支持体に対して被支持
体が離れる方向に変位すると、支持体側のピスト
ン１２がシリンダ４内に押込まれ、油は送油パイ
プ６を通つて被支持体側のシリンダ４内に流入す
る。この時弁装置５が油の流れに抵抗力を与え、
ピストン１２の動きを抑制する。ピストン１２の
移動速度が遅ければ弁装置は作用せずに、その移
動を許容する。被支持体が逆方向に変位する場合
はこの逆の動きをする。アウタパイプ１とインナ
パイプ２とが組合され、かつ環状のシリンダ４と
互いに環状に連結された断面円弧状の複数のピス
トン杆１１とが組合されているので堅牢で、装置
の自重による鉛直方向の力の影響をほとんど受け
ない。従つて圧縮方向の大きな力を受けても座屈
のおそれがない。 Next, the action will be explained. This hydraulic vibration isolator is used by connecting either the outer cylinder 1 or the inner cylinder 2 to a supported body such as a pipe, and the other to a supporting body such as a structure. When the supported body is now displaced in a direction away from the support, the piston 12 on the support side is pushed into the cylinder 4, and oil flows into the cylinder 4 on the supported body side through the oil feed pipe 6. At this time, the valve device 5 applies resistance to the flow of oil,
The movement of the piston 12 is suppressed. If the movement speed of the piston 12 is slow, the valve device does not act and allows its movement. When the supported body is displaced in the opposite direction, it moves in the opposite direction. Since the outer pipe 1 and the inner pipe 2 are combined together, and the annular cylinder 4 and the plurality of piston rods 11 each having an arcuate cross section are connected to each other in an annular manner, it is robust and can withstand vertical forces due to the weight of the device. is hardly affected by. Therefore, there is no risk of buckling even if a large force in the compression direction is applied.

以上説明してきたように、本考案は、一端が支
持体または被支持体へ連結され、軸線方向の複数
の長孔３を備えたアウタパイプ１と、このアウタ
パイプ１内に軸線方向相対出入自在に挿入され、
一端が被支持体または支持体に連結されるインナ
パイプ２と、アウタパイプ１の外側に互いに間隔
をおいて対向するように固定され、互いに弁装置
５を介して連通された１対の環状のシリンダ４，
４と、これら両シリンダ４，４間に位置して、ア
ウタパイプ１の外側に軸線方向相対移動自在に被
挿され、長孔３を移動自在に貫通する連結部材８
によりインナパイプ２に連結されたリング７と、
このリングに夫々一端が固定され、両側に延出し
て前記シリンダ４，４のふた４ａを貫通し、シリ
ンダ４，４内にピストン１２，１２を有する複数
の断面円弧形板状のピストン杆とを具備した構成
としたため、防振器の自重の影響がほとんどなく
従つて座屈のおそれがなく、同形のシリンダ４を
２つ用いて相互に連通するため油タンクが不要で
維持管理が容易で、全体がコンパクトにできると
いう効果を有する。 As described above, the present invention comprises an outer pipe 1 having one end connected to a support or a supported body and having a plurality of elongated holes 3 in the axial direction, and a bearing member 2 inserted into the outer pipe 1 so as to be freely movable in and out of the axial direction relative to the support or the supported body.
The inner pipe 2 has one end connected to a support or a support body, and a pair of annular cylinders 4 are fixed to the outside of the outer pipe 1 so as to face each other with a gap therebetween and communicate with each other via a valve device 5.
A connecting member 8 is positioned between the two cylinders 4, 4, and is inserted on the outside of the outer pipe 1 so as to be relatively movable in the axial direction, and passes through the long hole 3 so as to be movable.
a ring 7 connected to the inner pipe 2 by a
Since the vibration isolator is equipped with a plurality of plate-shaped piston rods each having an arc-shaped cross section, one end of which is fixed to this ring, which extend to both sides and penetrate the lids 4a of the cylinders 4, 4, and which have pistons 12, 12 inside the cylinders 4, 4, the vibration isolator is hardly affected by its own weight and therefore there is no risk of buckling.Furthermore, since two cylinders 4 of the same shape are used and connected to each other, no oil tank is required, making maintenance easy, and the entire unit can be made compact.

[Brief explanation of the drawing]

第１図は正面図、第２図は第１図−断面
図、第３図は一部の正面図である。１……アウタパイプ、２……インナパイプ、３
……長孔、４……シリンダ、４ａ……ふた、５…
…弁装置、６……送油管、７……リング、８……
ピン（連結部材）、１１……ピストン杆、１２…
…ピストン。 FIG. 1 is a front view, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a partial front view. 1... Outer pipe, 2... Inner pipe, 3
...Long hole, 4...Cylinder, 4a...Lid, 5...
...Valve device, 6...Oil pipe, 7...Ring, 8...
Pin (connecting member), 11...Piston rod, 12...
…piston.

Claims

[Claims for Utility Model Registration] An outer pipe having one end connected to a supporting body or a supported body and having a plurality of long holes in the axial direction; or an inner pipe connected to a support body, a pair of annular cylinders fixed to the outside of the outer pipe so as to face each other at a distance, and communicated with each other via a valve device; and between these two cylinders. positioned and inserted to the outside of the outer pipe so as to be relatively movable in the axial direction,
a ring connected to the inner pipe by a connecting member movably passing through the elongated hole; one end of each ring is fixed to the ring, extends to both sides and passes through the cylinder lid, and has a piston in the cylinder oil chamber. A buckling-prevention hydraulic vibration isolator equipped with a plate-shaped piston rod with a plurality of circular arc cross sections.