HYDRAULIC POWER ANTI-RESONANCE VIBRATION ISOLATOR HAVING ADJUSTABLE ANTI-RESONANCE FREQUENCY

标题：HYDRAULIC POWER ANTI-RESONANCE VIBRATION ISOLATOR HAVING ADJUSTABLE ANTI-RESONANCE FREQUENCY

摘要：A hydraulic power anti-resonance vibration isolator having an adjustable anti-resonance frequency, said vibration isolator comprising an outer cylinder (4), an inner cylinder (2), an elastic thin film assembly (8) and a frequency modulation counterweight (9), one end of the outer cylinder (4) being sealed and connected to a vibration source, the inner cylinder (2) being arranged within the outer cylinder (4), rubber (3) being arranged between the inner cylinder (2) and the outer cylinder (4), the rubber (3) being adhered to an inner cylinder outer wall and an outer cylinder inner wall, the end of the inner cylinder (2) away from the vibration source being sealed and connected to a fixing mechanism, the elastic thin film assembly (8) forming an end surface which seals the inner cylinder (2), the end surface and the sealed end of the outer cylinder (4) together forming an accommodating cavity used for accommodating a fluid, the frequency modulation counterweight (9) being connected to the surface of the elastic thin film assembly (8) away from the accommodating cavity. The vibration isolator can adjust the anti-resonance frequency by altering the mass of the frequency modulation counterweight, so as to adapt to rotor vibration load frequency fluctuations, thereby overcoming the defect that traditional power vibration absorption frequencies are highly selective.

申请号：WOCN18115809

申请日：2018/11/16

申请人：CHINA HELICOPTER RESEARCH AND DEVELOPMENT INSTITUTE

首项权利要求：一种反共振频率可调的液压式动力反共振隔振器，设置在振源与固定机构之间，其特征在于，包括： 外筒(4)，所述外筒(4)一端封闭，并连接所述振源； 内筒(2)，设置在所述外筒(4)内，并与所述外筒(4)之间设置有橡胶(3)，所述橡胶(3)粘合在所述内筒外壁及所述外筒内壁上，所述内筒(2)的背离所述振源的一端连接所述固定机构； 弹性薄膜组件(8)，设置在所述内筒(2)的背离所述振源的一端，并形成封闭所述内筒(2)的端面，所述端面与所述外筒(4)的封闭端共同形成容纳腔，所述容纳腔内容纳有流体； 调频配重块(9)，可拆卸连接在所述弹性薄膜组件(8)的背离所述容纳腔的一面上。 如权利要求1所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述外筒(4)通过上端盖(6)连接所述振源，所述上端盖(6)设置成碗状并扣合在所述外筒(4)端部，碗底设置有第一关节轴承。 如权利要求2所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述上端盖(6)与所述外筒(4)通过螺纹连接，在所述外筒内壁的螺纹连接处设置有第一密封圈。 如权利要求2所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述上端盖(6)的碗底设置有通孔，以连通所述容纳腔，所述通孔处适配安装有螺塞(10)。 如权利要求1所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述内筒(2)、橡胶(3)以及外筒(4)一体热硫化成型。 如权利要求1所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述内筒(2)通过下端盖(1)连接所述固定机构，所述下端盖成碗状并扣合在所述内筒(2)端部，碗底设置有第二关节轴承。 如权利要求1所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述下端盖(1)与所述内筒外壁通过螺纹连接。 如权利要求1所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述弹性薄膜组件(8)包括弹性薄膜片、与所述内筒(2) 螺纹连接的接头部分以及调整螺栓，所述调整螺栓设置在所述弹性薄膜组件(8)的背离所述容纳腔的一面，并螺接所述调频配重块(9)。 如权利要求8所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述弹性薄膜片中心部分向背离所述容纳腔的一面凹陷，形成盆腔，所述调整螺栓设置在所述盆腔背面。 如权利要求1所述的反共振频率可调的液压式动力反共振隔振器，其特征在于，所述流体为水。

专利类型：发明申请