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HYDRAULIC DAMPER WITH SPEED LIMITING FUNCTION HAVING HARDENING HYDRAULIC CIRCUIT
PROBLEM TO BE SOLVED: To cause a hydraulic damper used as a synchronization mass damper (TMD) or a damper for base isolation structure and the like to have a function for increasing a load generated when a speed exceeds a specified value.SOLUTION: Hardening hydraulic circuits 51, 52 for realizing an attenuation characteristic in which an attenuation coefficient is increased as a speed generated at a hydraulic damper 1 itself is increased are connected side-by-side between hydraulic chambers 41, 42. The hardening hydraulic circuits 51, 52 are constituted by a pressure regulator valve 61 opened or closed in response to a pressure in a high pressure side hydraulic chambers 41(42) and additional hydraulic valves 62(19) always kept in an operating state; a selector valve 71 and a selector valve 72 connected between a spring chamber 61a of the pressure regulator 61 and a hydraulic chamber 42(41) at a low pressure side so as to select an operating state of the pressure regulator valve 61; a buffer 8 connected between the hydraulic chambers 41(42) at a high pressure side and the other selector valve 72 so as to select the selector valve 72 kept at a closed state to a released state; and a relief valve 9 for specifying the maximum pressure in the buffer 8.
【課題】同調質量ダンパ（ＴＭＤ）や免震構造物用のダンパ等として使用される油圧ダンパに速度が一定値を超えたときに発生する荷重を増大させる機能を持たせる。【解決手段】油圧室４１、４２間に、油圧ダンパ１自体に生じた速度の増加に伴い、減衰係数が増大する減衰特性を発揮するハードニング油圧回路５１、５２を並列に接続する。ハードニング油圧回路５１、５２を、高圧側の油圧室４１（４２）の圧力に応じて開閉する調圧弁６１と常に作動状態にある付加油圧弁６２（１９）と、調圧弁６１のばね室６１ａと低圧側の油圧室４２（４１）との間に接続され、調圧弁６１の作動状態を切り替える切替弁７１及び切替弁７２と、高圧側の油圧室４１（４２）と他方の切替弁７２との間に接続され、閉鎖状態にあるときの切替弁７２を開放状態に切り替えるバッファ８と、バッファ８内の最大圧力を規定するリリーフ弁９から構成する。【選択図】図１
HYDRAULIC DAMPER WITH SPEED LIMITING FUNCTION HAVING HARDENING HYDRAULIC CIRCUIT
PROBLEM TO BE SOLVED: To cause a hydraulic damper used as a synchronization mass damper (TMD) or a damper for base isolation structure and the like to have a function for increasing a load generated when a speed exceeds a specified value.SOLUTION: Hardening hydraulic circuits 51, 52 for realizing an attenuation characteristic in which an attenuation coefficient is increased as a speed generated at a hydraulic damper 1 itself is increased are connected side-by-side between hydraulic chambers 41, 42. The hardening hydraulic circuits 51, 52 are constituted by a pressure regulator valve 61 opened or closed in response to a pressure in a high pressure side hydraulic chambers 41(42) and additional hydraulic valves 62(19) always kept in an operating state; a selector valve 71 and a selector valve 72 connected between a spring chamber 61a of the pressure regulator 61 and a hydraulic chamber 42(41) at a low pressure side so as to select an operating state of the pressure regulator valve 61; a buffer 8 connected between the hydraulic chambers 41(42) at a high pressure side and the other selector valve 72 so as to select the selector valve 72 kept at a closed state to a released state; and a relief valve 9 for specifying the maximum pressure in the buffer 8.
【課題】同調質量ダンパ（ＴＭＤ）や免震構造物用のダンパ等として使用される油圧ダンパに速度が一定値を超えたときに発生する荷重を増大させる機能を持たせる。【解決手段】油圧室４１、４２間に、油圧ダンパ１自体に生じた速度の増加に伴い、減衰係数が増大する減衰特性を発揮するハードニング油圧回路５１、５２を並列に接続する。ハードニング油圧回路５１、５２を、高圧側の油圧室４１（４２）の圧力に応じて開閉する調圧弁６１と常に作動状態にある付加油圧弁６２（１９）と、調圧弁６１のばね室６１ａと低圧側の油圧室４２（４１）との間に接続され、調圧弁６１の作動状態を切り替える切替弁７１及び切替弁７２と、高圧側の油圧室４１（４２）と他方の切替弁７２との間に接続され、閉鎖状態にあるときの切替弁７２を開放状態に切り替えるバッファ８と、バッファ８内の最大圧力を規定するリリーフ弁９から構成する。【選択図】図１
HYDRAULIC DAMPER WITH SPEED LIMITING FUNCTION HAVING HARDENING HYDRAULIC CIRCUIT
ハードニング油圧回路を搭載した速度制限機能付き油圧ダンパ
KURINO HARUHIKO (author) / KANO NAOKI (author) / FUKUDA RYUSUKE (author) / KOTAKE YUJI (author) / SUZUKI TAKAYUKI (author)
2015-09-28
Patent
Electronic Resource
Japanese
Hydraulic control system having electronic flow limiting
| European Patent Office | 2015