JP2001280393A - Hydraulic damper for damping vibration - Google Patents
Hydraulic damper for damping vibrationInfo
- Publication number
- JP2001280393A JP2001280393A JP2000094937A JP2000094937A JP2001280393A JP 2001280393 A JP2001280393 A JP 2001280393A JP 2000094937 A JP2000094937 A JP 2000094937A JP 2000094937 A JP2000094937 A JP 2000094937A JP 2001280393 A JP2001280393 A JP 2001280393A
- Authority
- JP
- Japan
- Prior art keywords
- block
- pressure
- hydraulic
- pressure sensor
- pressure sensors
- 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.)
- Granted
Links
Landscapes
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地震や風などの振動外
力による建物の揺れを低減するための制振用油圧ダンパ
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping hydraulic damper for reducing the vibration of a building due to an external force such as an earthquake or wind.
【０００２】[0002]
【従来の技術】 建物の揺れを低減するための制振用油
圧ダンパとして、シリンダ内に往復動可能に設けられた
ピストンの両側に形成される両油圧室を連通する通路内
に開閉制御弁を設け、前記両油圧室に取付けられた圧力
センサによって計測された圧力に基づいて前記開閉制御
弁を制御するものがある（例えば、特開平１１−３３６
３６６号公報参照）。2. Description of the Related Art As a vibration damping hydraulic damper for reducing the shaking of a building, an opening / closing control valve is provided in a passage communicating with both hydraulic chambers formed on both sides of a piston provided reciprocally in a cylinder. There is one that controls the opening / closing control valve based on the pressure measured by a pressure sensor attached to each of the hydraulic chambers (for example, JP-A-11-336).
366).
【０００３】[0003]
【発明が解決しようとする課題】ところが、前記従来の
制振用油圧ダンパは、建物の柱梁架構内に設置後、油圧
室の圧力を計測する圧力センサが故障した際に、交換の
ために故障した圧力センサを取外すと、装置内部の油が
外部に流出してしまい、油の補給作業や内部の空気抜き
作業を行わなければならず、圧力センサの取外し取付け
に付随する作業が面倒であった。本発明の目的は、油圧
室の圧力を計測する圧力センサが故障した際に、この圧
力センサの取外しを不要にして油の補給作業や内部の空
気抜き作業を軽減し得る制振用ダンパを提供することで
ある。However, the conventional vibration damper for vibration damping is installed for replacement when a pressure sensor for measuring the pressure in the hydraulic chamber breaks down after being installed in a beam-column frame of a building. If the failed pressure sensor is removed, the oil inside the device will leak out, and the work of replenishing the oil and bleeding the inside must be performed, and the work involved in removing and installing the pressure sensor was troublesome. . SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration damper capable of reducing the need for removing the pressure sensor when the pressure sensor for measuring the pressure in the hydraulic chamber fails, thereby reducing the work of replenishing oil and the work of bleeding air. That is.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明の構成上の特徴は、シリンダ本体内を摺動す
るピストンの両側に形成される第１及び第２油圧室の圧
力を計測し、この計測した圧力に基づいて両油圧室間を
接続する流路を開閉制御して振動を減衰する制振用油圧
ダンパにおいて、シリンダ本体の上部には第１及び第２
油圧室の圧力をそれぞれ計測する第１及び第２圧力セン
サを備えたブロックを設け、ブロックはシリンダ本体に
当接する底面及び底面と対向する上面及び底面と上面を
繋ぐ側面とから外面を構成し、前記ブロックの側面には
第１及び第２圧力センサを取付け、ブロックの上面には
第１及び第２油圧室に接続する第１及び第２取付孔を開
口し、第１及び第２取付孔はそれぞれ着脱可能な栓部材
で閉塞すると共に、第１及び第２圧力センサに相当する
別の圧力センサを取付可能としたことである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a structural feature of the present invention is to reduce the pressure of first and second hydraulic chambers formed on both sides of a piston sliding in a cylinder body. A damping hydraulic damper that measures and controls the opening and closing of a flow path connecting between the two hydraulic chambers based on the measured pressure to attenuate the vibration.
A block having first and second pressure sensors for measuring the pressure of the hydraulic chamber is provided, and the block has an outer surface formed by an upper surface opposed to a bottom surface and a bottom surface in contact with the cylinder body and a side surface connecting the bottom surface and the upper surface, First and second pressure sensors are mounted on side surfaces of the block, and first and second mounting holes connected to first and second hydraulic chambers are opened on an upper surface of the block. The first and second mounting holes are Each of them is closed by a detachable plug member, and another pressure sensor corresponding to the first and second pressure sensors can be attached.
【０００５】[0005]
【発明の作用・効果】上記のように構成した本発明にお
いては、制振用油圧ダンパを建物の柱梁架構内に設置し
た後に、ブロックの側面に取付けた第１又は第２圧力セ
ンサが故障した場合、第１又は第２取付孔の栓部材を取
外し、第１又は第２取付孔に第１又は第２圧力センサに
相当する別の圧力センサを取付け、故障した第１又は第
２圧力センサは取付けたままにしておく。このため、ブ
ロック側面に取付けた第１又は第２圧力センサを取外し
ここに別の圧力センサを取付ける場合と比較すると、第
１及び第２取付孔はブロック上面に開口しているため、
別の圧力センサ取付け時に油の外部流出を抑制できて油
の補給作業を軽減できると共に内部の空気抜き作業を不
要とすることができる。According to the present invention constructed as described above, the first or second pressure sensor attached to the side of the block fails after the hydraulic damper for vibration damping is installed in the beam-column frame of the building. In this case, the plug member of the first or second mounting hole is removed, another pressure sensor corresponding to the first or second pressure sensor is mounted on the first or second mounting hole, and the failed first or second pressure sensor is damaged. Is left attached. For this reason, compared with the case where the first or second pressure sensor attached to the side surface of the block is removed and another pressure sensor is attached here, the first and second attachment holes are opened on the upper surface of the block.
When another pressure sensor is attached, the outflow of oil to the outside can be suppressed, the work of replenishing the oil can be reduced, and the work of bleeding air inside can be eliminated.
【０００６】また、制振用油圧ダンパの納入時には、ブ
ロックの側面に圧力センサを取付けているので、納入当
初からブロックの上面に圧力センサを取付けているもの
と比較すると、建物の施工の際に制振用油圧ダンパを建
物の柱梁架構内に設置する作業において圧力センサを構
造物にぶっつけるなどして破損することを良好に防止す
ることができる。When a hydraulic damper for vibration damping is delivered, a pressure sensor is attached to the side surface of the block. Therefore, when compared with the pressure sensor attached to the top surface of the block from the beginning of delivery, it is more difficult to construct a building. In the work of installing the hydraulic damper for vibration damping in the column-beam frame of the building, it is possible to prevent the pressure sensor from hitting the structure or the like, and to be prevented from being damaged.
【０００７】[0007]
【実施の形態】以下に本発明の実施の形態を図面に基づ
いて説明する。図１，２に示すように、シリンダ１のシ
リンダ本体２内にはピストン３が摺動可能に挿着され、
ピストン３の両側に第１油圧室４及び第２油圧室５が形
成されている。ピストン３の両端に突設されたピストン
ロッド６，７はシリンダ本体２の両端部を油が外部に漏
れないようにＯリングでシールされて外部に突出してい
る。８，９は第１及び第２油圧室４，５に連通する第１
及び第２給排ポートで、シリンダ本体２の外周上面に平
坦に形成された取付面１０に開口している。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a piston 3 is slidably inserted into a cylinder body 2 of a cylinder 1.
A first hydraulic chamber 4 and a second hydraulic chamber 5 are formed on both sides of the piston 3. The piston rods 6, 7 protruding from both ends of the piston 3 are sealed with O-rings at both ends of the cylinder body 2 so as to prevent oil from leaking outside, and protrude outside. Reference numerals 8 and 9 denote first and second hydraulic chambers 4 and 5, respectively.
And a second supply / discharge port, which is open on a mounting surface 10 formed flat on the outer peripheral upper surface of the cylinder body 2.
【０００８】ピストンロッド６の端部には球状部１１が
形成され、球状部１１には継手部材１２が枢動可能に取
付けられている。継手部材１２と反対側のシリンダ本体
２の端部には接続部材１３が取付けられ、この接続部材
１３の凹所１４内にピストンロッド７が突出している。
１５はシリンダ本体２とピストン３との相対変位を計測
するためのストロークセンサで、接続部材１３の凹所１
４内でシリンダ本体２の端部に固定された取付部材１６
に取付けられている。接続部材１３の端部に螺着された
連結部材１７の球状部１８には継手部材１９が枢動可能
に取付けられている。両継手部材１２，１９の一方は制
振対象物に取付けられ、他方は基盤に取付けられる。２
０はシリンダ本体２の外周に固定された回り止め部材
で、この回り止め部材２０が建物の床面に当接すること
によりシリンダ本体２は回り止めされる。A spherical portion 11 is formed at the end of the piston rod 6, and a joint member 12 is attached to the spherical portion 11 so as to be pivotable. A connecting member 13 is attached to the end of the cylinder body 2 opposite to the joint member 12, and the piston rod 7 projects into a recess 14 of the connecting member 13.
Reference numeral 15 denotes a stroke sensor for measuring a relative displacement between the cylinder body 2 and the piston 3, and a recess 1 of the connecting member 13.
Mounting member 16 fixed to the end of cylinder body 2 within
Mounted on A joint member 19 is pivotably attached to a spherical portion 18 of a connecting member 17 screwed to an end of the connecting member 13. One of the two joint members 12, 19 is attached to the object to be damped, and the other is attached to the base. 2
Reference numeral 0 denotes a detent member fixed to the outer periphery of the cylinder body 2. The detent member 20 is stopped from rotating when the detent member 20 contacts the floor of the building.
【０００９】図１，６に示すように、シリンダ本体２の
取付面１０にはブロック２１を構成する上ブロック２２
及び下ブロック２３が積層して固定され、下ブロック２
３には第１及び第２給排ポート８，９に連通する貫通孔
２４，２５が底面２３Ａから上面に貫通して穿設され、
これら貫通孔２４，２５が下ブロック２３内に水平方向
にお互い平行に穿設された下連通孔２６，２７と夫々交
叉し連通している。上ブロック２２の下面には下ブロッ
ク２３の上面に開口する貫通孔２４，２５と連通する接
続孔２８，２９が開口され、これら接続孔２８，２９が
上ブロック２２内に下連通孔２６，２７と平行に穿設さ
れた上連通孔３０，３１と夫々交叉し連通している。貫
通孔２４、下連通孔２６、接続孔２８及び上連通孔３０
により第１給排ポート８延いては第１油圧室４と連通す
る第１連通路３２が形成され、貫通孔２５、下連通孔２
７、接続孔２９及び上連通孔３１により第２給排ポート
９延いては第２油圧室５と連通する第２連通路３３が形
成されている。As shown in FIGS. 1 and 6, an upper block 22 constituting a block 21 is provided on the mounting surface 10 of the cylinder body 2.
And the lower block 23 are laminated and fixed, and the lower block 2
3, through holes 24, 25 communicating with the first and second supply / discharge ports 8, 9 are formed so as to penetrate from the bottom surface 23A to the top surface.
These through holes 24, 25 cross and communicate with lower communication holes 26, 27 formed in the lower block 23 in a horizontal direction in parallel with each other. In the lower surface of the upper block 22, connection holes 28, 29 communicating with the through holes 24, 25 opening in the upper surface of the lower block 23 are opened. These connection holes 28, 29 are formed in the upper block 22 in the lower communication holes 26, 27. And communicate with the upper communication holes 30 and 31 formed in parallel with the upper and lower communication holes, respectively. Through hole 24, lower communication hole 26, connection hole 28, and upper communication hole 30
As a result, a first communication passage 32 communicating with the first supply / discharge port 8 and the first hydraulic chamber 4 is formed, and the through hole 25 and the lower communication hole 2 are formed.
7, a second communication passage 33 communicating with the second supply / discharge port 9 and the second hydraulic chamber 5 is formed by the connection hole 29 and the upper communication hole 31.
【００１０】図４，５において、４０，４１は上ブロッ
ク２２の互いに対向する横側面２２Ｃ及び２２Ｄに取付
けられた第１及び第２開閉制御弁で、第１開閉制御弁４
０は第１連通路３２から第２連通路３３に向かう流れを
開閉制御し、第２開閉制御弁４１は第２連通路３３から
第１連通路３２に向かう流れを開閉制御する。即ち、図
３に示すように、第1開閉制御弁４０は、第１連通路３
２の方が第２連通路３３より高圧のときに、ソレノイド
が非励磁でパイロット弁４０Ｂが閉止されていると、第
１連通路３２の高圧油が主弁体４０Ａの両端面に作用
し、ばね力で主弁体４０Ａは閉止位置に保持される。こ
の状態でソレノイドが励磁されてパイロット弁４０Ａが
開かれると、主弁体４０Ａのばね力が作用する一方端面
がパイロット弁４０Ａを介して低圧の第２連通路３３に
連通され、主弁体４０Ａは他方端面に作用する高圧によ
り開口位置にシフトされ、第１及び第２連通路３２，３
３延いては第１及び第２油圧室４，５は連通される。In FIGS. 4 and 5, reference numerals 40 and 41 denote first and second on-off control valves mounted on opposed side surfaces 22C and 22D of the upper block 22, respectively.
0 controls opening and closing of the flow from the first communication passage 32 to the second communication passage 33, and the second opening / closing control valve 41 controls opening and closing of the flow from the second communication passage 33 to the first communication passage 32. That is, as shown in FIG. 3, the first open / close control valve 40
When the pressure is higher than that of the second communication passage 33 and the pilot valve 40B is closed when the solenoid is not excited, the high-pressure oil of the first communication passage 32 acts on both end surfaces of the main valve body 40A, The main valve body 40A is held at the closed position by the spring force. In this state, when the solenoid is excited and the pilot valve 40A is opened, one end face on which the spring force of the main valve body 40A acts is connected to the low-pressure second communication passage 33 via the pilot valve 40A, and the main valve body 40A is opened. Is shifted to the open position by the high pressure acting on the other end face, and the first and second communication passages 32, 3
3, and the first and second hydraulic chambers 4, 5 are communicated.
【００１１】第２開閉制御弁４１は第１及び第２連通路
３２，３３に第１開閉制御弁４０と逆向きに接続されて
いるだけで、構造は同一である。従って、第２連通路３
３の方が第１連通路３２より高圧のときに、ソレノイド
が非励磁でパイロット弁４１Ｂが閉止されていると、主
弁体４１Ａは閉止位置に保持され、ソレノイドが励磁さ
れてパイロット弁４１Ｂが開かれると、主弁体４１Ａは
開口位置にシフトされ、第２及び第１連通路３３，３２
延いては第２及び第１油圧室５，４は連通される。第1
開閉制御弁４０は、そのパイロット弁４０Ｂ及び主弁体
４０Ａを収納するケーシング４０Ｄが上ブロック２２の
右横側面２２Ｃに取付けられ、第２開閉制御弁４１は、
そのパイロット弁４１Ｂ及び主弁体４１Ａを収納するケ
ーシング４１Ｄが左横側面２２Ｄに取付けられている。
なお、図３において、４２は第１連通路３２と第２連通
路３３とを接続する流路内に配設の断電弁で、通常は通
電によりソレノイドが励磁されて閉状態にあり、停電等
の断電によりソレノイドが非励磁となって開作動し、第
１及び第2連通路３２，３３間を断電弁４２と直列に配
設の絞り４３を介して連通する。The structure of the second on-off control valve 41 is the same as that of the first on-off control valve 40 except that it is connected to the first and second communication passages 32 and 33 in the opposite direction. Therefore, the second communication path 3
When the solenoid 3 is higher in pressure than the first communication passage 32 and the pilot valve 41B is closed due to the non-excitation of the solenoid, the main valve body 41A is held in the closed position, the solenoid is excited and the pilot valve 41B is activated. When opened, the main valve body 41A is shifted to the open position, and the second and first communication passages 33 and 32 are opened.
As a result, the second and first hydraulic chambers 5, 4 are communicated. First
The open / close control valve 40 has a casing 40D that houses the pilot valve 40B and the main valve body 40A attached to the right lateral side 22C of the upper block 22, and the second open / close control valve 41
A casing 41D that houses the pilot valve 41B and the main valve body 41A is attached to the left lateral side 22D.
In FIG. 3, reference numeral 42 denotes a disconnection valve provided in a flow path connecting the first communication passage 32 and the second communication passage 33. Usually, the solenoid is energized by energization and is in a closed state. As a result, the solenoid is de-energized and opened, and the first and second communication passages 32 and 33 are connected in series with the disconnection valve 42 via a throttle 43 provided in series.
【００１２】４５，４６は上下ブロック２２，２３の横
側面２２Ｃ，２３Ｃ及び２２Ｄ，２３Ｄに4個づつ取付
けられた第１及び第２リリーフ弁で、第１リリーフ弁４
５は第１連通路３２と第２連通路３３とを接続する流路
内に配設され、第１連通路３２内の圧力が第２連通路３
３内の圧力よりリリーフ圧以上高くなると開口し、第1
及び第2連通路３２，３３を連通する。第2リリーフ弁４
６は第１連通路３２と第２連通路３３とを接続する流路
内に第１リリーフ弁４５と逆方向に配設されており、第
２連通路３３内の圧力が第１連通路３２内の圧力よりリ
リーフ圧以上高くなると開口し、第２及び第１連通路３
３，３２を連通する。Reference numerals 45 and 46 denote first and second relief valves respectively mounted on the side surfaces 22C and 23C and 22D and 23D of the upper and lower blocks 22 and 23, respectively.
5 is provided in a flow path connecting the first communication path 32 and the second communication path 33, and the pressure in the first communication path 32 is
It opens when the relief pressure is higher than the pressure in 3
And the second communication passages 32 and 33. 2nd relief valve 4
6 is disposed in a flow path connecting the first communication path 32 and the second communication path 33 in a direction opposite to the first relief valve 45, and the pressure in the second communication path 33 is reduced by the first communication path 32. When the internal pressure becomes higher than the relief pressure by more than the relief pressure, it opens, and the second and first communication passages 3 are opened.
3 and 32 are communicated.
【００１３】５０は下ブロック２３の両縦側面にそれぞ
れ固定されたアキュムレータで、アキュムレータ５０か
ら第1及び第2連通路３２，３３に向かう流れのみを許容
するチェック弁５１，５２を介して第1及び第2の連通路
３２，３３に接続されている。５３，５４は各チェック
弁５１，５２に並列に挿入された固定絞りである。Numerals 50 denote accumulators fixed to both longitudinal side surfaces of the lower block 23, respectively. The first accumulators are provided with check valves 51, 52 for allowing only the flow from the accumulator 50 to the first and second communication passages 32, 33. And the second communication passages 32 and 33. 53, 54 are fixed throttles inserted in parallel with the check valves 51, 52, respectively.
【００１４】図６において、５５，５６は下ブロック２
３の左右横側面２３Ｃ，２３Ｄに夫々取付けられた第１
及第２圧力センサで、第１圧力センサ５５は側面取付孔
５７を介して第１連通路３２延いては第１油圧室４に連
通され、第１油圧室４の圧力を計測し、第２圧力センサ
５６は側面取付孔５８を介して第２連通路３３延いては
第２油圧室５に連通され、第２油圧室５の圧力を計測す
るようになっている。６０，６１は上ブロック２２の上
面２２Ａに開口された第１及び第２取付孔で、第１及び
第２連通路３２，３３を介して第１及び第２油圧室４，
５に連通されている。第１及び第２取付孔６０，６１は
当初は栓部材６２，６３で閉塞されているが、第１及び
第２圧力センサのいずれか一方又は両方が故障した場
合、図７に示すように、栓部材６２及び６３のいずれか
一方又は両方を取外して故障した圧力センサに相当する
別の圧力センサ６４，６５を取付けるようになってい
る。In FIG. 6, 55 and 56 are lower blocks 2
3 attached to the left and right lateral side surfaces 23C and 23D, respectively.
The first pressure sensor 55 is connected to the first communication passage 32 and the first hydraulic chamber 4 via the side surface mounting hole 57 to measure the pressure in the first hydraulic chamber 4. The pressure sensor 56 communicates with the second communication passage 33 and the second hydraulic chamber 5 via the side surface mounting hole 58, and measures the pressure in the second hydraulic chamber 5. Reference numerals 60 and 61 denote first and second mounting holes opened on the upper surface 22A of the upper block 22, and the first and second hydraulic chambers 4 and 4 through the first and second communication passages 32 and 33, respectively.
5 is connected. Although the first and second mounting holes 60 and 61 are initially closed by the plug members 62 and 63, if one or both of the first and second pressure sensors fail, as shown in FIG. By removing one or both of the plug members 62 and 63, other pressure sensors 64 and 65 corresponding to the failed pressure sensor are attached.
【００１５】次に、上記のように構成した本実施形態の
制振用油圧ダンパの作動について説明する。制振用油圧
ダンパは、シリンダ本体２側の継手部材１９を柱梁架構
の梁に固定し、ピストン側の継手部材１２をブレース又
は耐震壁などの耐震要素に固定することで、柱梁架構内
に組込まれ、地震や風などの振動外力が建物に作用する
ことによる柱梁架構の振動に対し制振用油圧ダンパが能
動的に減衰抵抗力を生じる。即ち、制振用油圧ダンパの
圧力センサ５５及び５６は第１及び第２油圧室４，５内
の圧力Ｐ１，Ｐ２を計測し、ストロークセンサ１５は柱
梁架構の振動によるシリンダ本体２とピストン３との相
対変位δを計測する。制御回路６６は、これら計測され
た圧力Ｐ１，Ｐ２及び相対変位δをもとに予め設定した
制御則に基づいてパイロット弁４０Ｂ，４１Ｂのソレノ
イドをオン、オフ制御して第１及び第２油圧室４，５を
接続する流路内の開閉制御弁４０，４１を開閉制御す
る。これにより柱梁架構に外部振動に対し的確な減衰抵
抗力が付与され、建物の振動を効果的に減衰することが
できる。なお、停電等の断電により開閉制御弁４０，４
１の開閉制御が不能になる非常時には、断電弁４２が開
作動して第１及び第２油圧室４，５間を絞り４３を介し
て連通し、絞り４３で一定の減衰抵抗力が付与される。Next, the operation of the hydraulic damper for vibration suppression according to this embodiment configured as described above will be described. The hydraulic damper for vibration damping is constructed such that the joint member 19 on the cylinder body 2 side is fixed to a beam of a column-beam frame, and the joint member 12 on the piston side is fixed to a seismic element such as a brace or an earthquake-resistant wall. The hydraulic damper for damping actively generates damping resistance against the vibration of the beam-column structure caused by the external vibrations such as earthquakes and winds acting on the building. That is, the pressure sensors 55 and 56 of the vibration damping hydraulic damper measure the pressures P1 and P2 in the first and second hydraulic chambers 4 and 5, and the stroke sensor 15 detects the cylinder body 2 and the piston 3 due to the vibration of the beam-column structure. And the relative displacement δ is measured. The control circuit 66 controls the solenoids of the pilot valves 40B and 41B on and off based on a control law set in advance based on the measured pressures P1 and P2 and the relative displacement δ to control the first and second hydraulic chambers. Opening / closing control valves 40, 41 in the flow path connecting 4, 5 are controlled to open / close. As a result, a precise damping resistance against external vibration is given to the column-beam frame, and the vibration of the building can be effectively damped. The switching control valves 40, 4 due to a power failure such as a power failure.
In the event of an emergency that the opening / closing control cannot be performed, the disconnection valve 42 opens to communicate between the first and second hydraulic chambers 4 and 5 via the throttle 43, and a constant damping resistance is applied by the throttle 43. Is done.
【００１６】振動外力が大きくなり、第１及び第２油圧
室４，５間の圧力差がリリーフ圧より大きくなると、リ
リーフ弁４５又は４６が開口して第１及び第２油圧室
４，５を接続する流路の抵抗を低減し、第１及び第２油
圧室４，５内の圧力が過大になることを防止する。この
場合は、第１及び第２油圧室４，５を接続する流路内の
抵抗は一定となり、柱梁架構に外部振動に対し一定の減
衰抵抗力が付与される。When the external vibration force increases and the pressure difference between the first and second hydraulic chambers 4 and 5 becomes larger than the relief pressure, the relief valve 45 or 46 opens to open the first and second hydraulic chambers 4 and 5. The resistance of the flow path to be connected is reduced, and the pressure in the first and second hydraulic chambers 4 and 5 is prevented from becoming excessive. In this case, the resistance in the flow path connecting the first and second hydraulic chambers 4 and 5 is constant, and a constant damping resistance is applied to the column-beam frame against external vibration.
【００１７】振動により第１又は第２油圧室４，５の圧
力が低下したとき、アキュムレータ５０からチェック弁
５１又は５２を介して第１又は第２連通路３２，３３延
いては第１又は第２油圧室４，５に作動油が供給され、
第１又は第２油圧室４，５が負圧になって減衰作用が低
下することが防止される。また、気温上昇などにより作
動油の温度が上昇した場合、第１及び第２油圧室、第１
及び第２連通路３２，３３内の膨張した作動油は固定絞
り５３，５４を通ってアキュムレータ５０に蓄積され
る。When the pressure in the first or second hydraulic chambers 4 and 5 decreases due to vibration, the first or second communication passages 32 and 33 extend from the accumulator 50 via the check valve 51 or 52 and extend to the first or second communication chambers. 2 Hydraulic oil is supplied to the hydraulic chambers 4 and 5,
This prevents the first or second hydraulic chambers 4 and 5 from becoming negative pressure and reducing the damping action. Further, when the temperature of the hydraulic oil rises due to a rise in temperature, the first and second hydraulic chambers,
The expanded hydraulic oil in the second communication passages 32 and 33 is accumulated in the accumulator 50 through the fixed throttles 53 and 54.
【００１８】第１及び第２圧力センサ５５，５６は、第
１及び第２油圧室４，５の圧力を計測し、制御回路６６
に入力する。ところで、例えば、第１圧力センサ５５が
故障した場合、故障した第１圧力センサ５５を下ブロッ
ク２３の横側面２３Ｃから取外すことなく、第１圧力セ
ンサ５５が取付けられている連通路３２に接続された取
付孔６０を閉塞している栓部材６２を取外し、この取付
孔６０に故障した第１圧力センサ５５に相当する別の圧
力センサ６４を取付ける。この際、第２圧力センサ５６
の寿命を考慮し、栓部材６３を取外して取付孔６１に第
２圧力センサ５６に相当する別の圧力センサ６５を同時
に取付けてもよい。The first and second pressure sensors 55 and 56 measure the pressures in the first and second hydraulic chambers 4 and 5, and control the control circuit 66.
To enter. By the way, for example, when the first pressure sensor 55 fails, the failed first pressure sensor 55 is connected to the communication passage 32 to which the first pressure sensor 55 is attached without removing the failed first pressure sensor 55 from the lateral side surface 23C of the lower block 23. The plug member 62 closing the mounting hole 60 is removed, and another pressure sensor 64 corresponding to the failed first pressure sensor 55 is mounted on the mounting hole 60. At this time, the second pressure sensor 56
In consideration of the service life of the pressure sensor, the plug member 63 may be removed and another pressure sensor 65 corresponding to the second pressure sensor 56 may be simultaneously mounted on the mounting hole 61.
【図１】 本発明に係る制振用油圧ダンパのシリンダ部
を断面で表わした正面図である。FIG. 1 is a front view showing a cylinder section of a hydraulic damper for vibration damping according to the present invention in cross section.
【図２】 本発明に係る制振用油圧ダンパの平面図であ
る。FIG. 2 is a plan view of a vibration damping hydraulic damper according to the present invention.
【図３】 本発明に係る制振用油圧ダンパの油圧回路図
である。FIG. 3 is a hydraulic circuit diagram of a vibration damper for damping according to the present invention.
【図４】 図１のＡ矢視拡大図である。FIG. 4 is an enlarged view as viewed from an arrow A in FIG.
【図５】 図１のＢ矢視拡大図である。。FIG. 5 is an enlarged view taken in the direction of arrow B in FIG. 1; .
【図６】 図４のＣ−Ｃ線に沿った断面図である。FIG. 6 is a sectional view taken along the line CC of FIG. 4;
【図７】 第１及び第２圧力センサが故障した際に別の
圧力センサを取付けた状態を示す図６に相当する断面図
である。FIG. 7 is a cross-sectional view corresponding to FIG. 6, showing a state where another pressure sensor is attached when the first and second pressure sensors have failed.
１・・・シリンダ、２・・・シリンダ本体、３・・・ピ
ストン、４・・・第１油圧室、５・・・第２油圧室、２
１・・・ブロック、２２・・・上ブロック（ブロックを
構成）、２３・・・下ブロック（ブロックを構成）、２
２Ａ・・・上面、２３Ａ・・・底面、２２Ｂ，２２Ｃ，
２３Ｂ，２３Ｃ・・・横側面、５５・・・第１圧力セン
サ、５６・・・第２圧力センサ、６２，６３・・・栓部
材、６４，６５・・・別の圧力センサ、４０，４１・・
・開閉制御弁、４０Ｂ，４１Ｂ・・・パイロット弁、４
５，４６・・・リリーフ弁、６０・・・第１取付孔、６
１・・・第２取付孔。DESCRIPTION OF SYMBOLS 1 ... cylinder, 2 ... cylinder body, 3 ... piston, 4 ... 1st hydraulic chamber, 5 ... 2nd hydraulic chamber, 2
1 ... block, 22 ... upper block (constituting block), 23 ... lower block (constituting block), 2
2A ... top surface, 23A ... bottom surface, 22B, 22C,
23B, 23C: lateral side, 55: first pressure sensor, 56: second pressure sensor, 62, 63: plug member, 64, 65: another pressure sensor, 40, 41・ ・
.Opening / closing control valves, 40B, 41B ... pilot valves, 4
5, 46 ... relief valve, 60 ... first mounting hole, 6
1 ... second mounting hole.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 市川 直樹 愛知県岡崎市鉢地町字開山45番地 豊興工 業株式会社内 (72)発明者 天野 賢一 愛知県岡崎市鉢地町字開山45番地 豊興工 業株式会社内 (72)発明者 小竹 祐治 東京都江東区東陽二丁目４番２号 日立機 材株式会社内 (72)発明者 銭 志偉 東京都江東区東陽二丁目４番２号 日立機 材株式会社内 (72)発明者 鈴木 隆之 東京都江東区東陽二丁目４番２号 日立機 材株式会社内 (72)発明者 栗野 治彦 東京都港区元赤坂一丁目２番７号 鹿島建 設株式会社内 Ｆターム(参考） 3J048 AA06 AC04 BE03 CB21 EA38 3J069 AA55 AA64 AA70 CC40 DD48 EE11 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Naoki Ichikawa 45, Kayama, Hachiji-cho, Okazaki City, Aichi Prefecture Inside (72) Inventor Kenichi Amano 45, Kayama, Hachiji-cho, Okazaki-shi, Aichi Within Industrial Co., Ltd. (72) Inventor Yuji Kotake 2-4-2 Toyo, Koto-ku, Tokyo Hitachi Machinery Co., Ltd. (72) Inventor Takayuki Suzuki 2-4-2 Toyo, Koto-ku, Tokyo Within Hitachi Koki Co., Ltd. Incorporated F term (reference) 3J048 AA06 AC04 BE03 CB21 EA38 3J069 AA55 AA64 AA70 CC40 DD48 EE11
Claims (1)
側に形成される第１及び第２油圧室の圧力を計測し、こ
の計測した圧力に基づいて両油圧室間を接続する流路を
開閉制御して振動を減衰する制振用油圧ダンパにおい
て、前記シリンダ本体の上部には前記第１及び第２油圧
室の圧力をそれぞれ計測する第１及び第２圧力センサを
備えたブロックを設け、このブロックは前記シリンダ本
体に当接する底面及び底面と対向する上面及び底面と上
面を繋ぐ側面とから外面を構成し、前記ブロックの側面
には前記第１及び第２圧力センサを取付け、前記ブロッ
クの上面には前記第１及び第２油圧室に接続する第１及
び第２取付孔を開口し、これら第１及び第２取付孔はそ
れぞれ着脱可能な栓部材で閉塞すると共に、前記第１及
び第２圧力センサに相当する別の圧力センサを取付け可
能としたことを特徴とする制振用油圧ダンパ。1. A method for measuring pressures of first and second hydraulic chambers formed on both sides of a piston sliding in a cylinder body, and opening and closing a flow path connecting the two hydraulic chambers based on the measured pressures. In a vibration damping hydraulic damper for controlling and attenuating vibration, a block having first and second pressure sensors for measuring the pressures of the first and second hydraulic chambers is provided at an upper portion of the cylinder main body. The block has an outer surface including a bottom surface in contact with the cylinder body, an upper surface facing the bottom surface, and a side surface connecting the bottom surface and the upper surface. The first and second pressure sensors are attached to side surfaces of the block, and an upper surface of the block is provided. The first and second mounting holes connected to the first and second hydraulic chambers are opened, and the first and second mounting holes are closed by detachable plug members, respectively, while the first and second mounting holes are closed. Phase for pressure sensor A hydraulic damper for vibration damping, wherein another pressure sensor corresponding thereto can be attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000094937A JP3922865B2 (en) | 2000-03-30 | 2000-03-30 | Damping hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000094937A JP3922865B2 (en) | 2000-03-30 | 2000-03-30 | Damping hydraulic damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001280393A true JP2001280393A (en) | 2001-10-10 |
| JP3922865B2 JP3922865B2 (en) | 2007-05-30 |
Family
ID=18609899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000094937A Expired - Fee Related JP3922865B2 (en) | 2000-03-30 | 2000-03-30 | Damping hydraulic damper |
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| Country | Link |
|---|---|
| JP (1) | JP3922865B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012102533A (en) * | 2010-11-10 | 2012-05-31 | Hitachi Metals Techno Ltd | Hydraulic damper for vibration control |
| JP2018071769A (en) * | 2016-11-04 | 2018-05-10 | Ｋｙｂ株式会社 | Valve block |
-
2000
- 2000-03-30 JP JP2000094937A patent/JP3922865B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012102533A (en) * | 2010-11-10 | 2012-05-31 | Hitachi Metals Techno Ltd | Hydraulic damper for vibration control |
| JP2018071769A (en) * | 2016-11-04 | 2018-05-10 | Ｋｙｂ株式会社 | Valve block |
| WO2018084098A1 (en) * | 2016-11-04 | 2018-05-11 | Ｋｙｂ株式会社 | Valve block |
| CN109863327A (en) * | 2016-11-04 | 2019-06-07 | Ｋｙｂ株式会社 | Valve group |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3922865B2 (en) | 2007-05-30 |
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