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)
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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
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JP2000094937A Expired - Fee Related JP3922865B2 (en) | 2000-03-30 | 2000-03-30 | Damping hydraulic damper |
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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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