摘要:
A fluid-filled elastic mount of suspension type, wherein a lower open-end of a cylindrical portion of a second mounting member is fluid-tightly closed by a first mounting member and a tapered elastic body interposed therebetween, extending from the lower open-end into the cylindrical portion. An upper open-end portion of the cylindrical portion is closed by a flexible layer for forming a fluid-filled chamber between the elastic body and the flexible layer and being divided by a partition member into a pressure-receiving chamber defined by the elastic body and an equilibrium chamber defined by the flexible layer, which are held in communication by an orifice passage An elastic restricting projection is bonded to the partition member to protrude and be located in an intermediate portion between the radially opposite elastic body and the cylindrical portion, for restricting an annular region of the intermediate portion.
摘要:
A hydraulic engine mount includes a bushing assembly having a core bonded to an inner support structure by an elastomeric material. The inner support structure includes a first ring, a second ring, and a plurality of legs. The first ring includes an annular wall, an outer end wall, and an inner end wall. The second ring includes an annular wall, an outer end wall, and an inner end wall. The legs are integrally formed with and between the first and second rings, so that the first ring, the second ring, and the legs are formed as a one-piece component that does not require a post-forming operation. A housing receives the bushing assembly. Fluid chambers are formed between the bushing assembly and the housing to dampen vibrations as hydraulic fluid is displaced between the chambers.
摘要:
A liquid chamber is arranged with a first support member 1, a second support member 2 and an elastic member 3, an inside of the liquid chamber is divided to a main liquid chamber 11 and an auxiliary liquid chamber 12 by a partition member 10 and both chambers are communicated with a damping orifice passage 14 and an idle orifice passage 15. On an inner face of a conical portion 4 of the elastic member 3, thin wall portions 7 are provided by forming recess 6 at axially symmetrical position so as to yield a minimum value for a dynamic spring characteristic against a vibration input in a designated medium frequency by a membrane resonance. A non-circular medium to high frequency device 20 projecting into the main liquid chamber 11 is provided to the first support member 1 so as to resonate by liquid column against a vibration input in a designated high frequency. Utilizing an elastic orifice member 31 the idle orifice passage 15 is formed and a part thereof is made to be an integrated elastic membrane portion 16 so as to have a non-linear spring characteristic that changes spring constant thereof by magnitude of vibration input. It becomes possible to absorb the vibration by elastic deformation through increasing of an inner pressure of liquid and to prevent large deformation by a large deformation control portion when a large vibration is inputted.
摘要:
A fluid-filled active vibration damping device including: a pressure-receiving chamber partially defined by an elastic body; an oscillating fluid chamber partially defined by an oscillating rubber plate on one side thereof; a first orifice passage for a fluid communication between the pressure-receiving and oscillating fluid chamber, which are filled with a non-compressible fluid; and a working air chamber partially defined by the oscillating rubber plate on the other side thereof, to which an air pressure variation is applied to cause an oscillation of the oscillating rubber plate. A ratio V/Q of a passage volume V of the first orifice passage to a unit flow amount Q of the fluid through the first orifice passage caused by the oscillation of the oscillating rubber plate based on the air pressure variation applied to the working air chamber is held within a range of about 1-10.
摘要:
A two-chamber step bearing with hydraulic damping, especially for mounting engines in motor vehicles, has at least one fluid-filled working chamber and at least one compensating chamber connected thereto by an overflow channel. An additional, blockable spring element (10) is arranged in series after the first hydraulic damping spring element comprising the working chamber (1), the compensating chamber (2) and the overflow channel (11), wherein the spring element (10) is arranged in a separate pretensioning chamber (8), which is connected to the working chamber (1) and the compensating chamber (2) by at least two switching elements (16, 17) which can be controlled independently from one another, and wherein the pretensioning chamber (8) can be filled up with hydraulic fluid for blocking the additional spring element (10) by the vibrations introduced into the two-chamber step bearing from the engine.
摘要:
A hydraulic vibration-damping support comprising two strength members interconnected by an elastomer body which defines a working chamber filled with liquid and separated from an easily-deformable compensation chamber by a rigid partition. The partition includes a decoupling flap which comprises a flexible membrane mounted to move with clearance between two intermediate gratings mounted on two rings via two elastomer bands.
摘要:
Fluid-filled active elastic mount includes a fluid chamber partially defined by an elastic body elastically connecting two spaced-apart mounting members, a movable plate partially defining the fluid chamber and displaceable to change a pressure of the fluid in the fluid chamber, and an actuator constituted by an oscillating force generator having a yoke member, a coil disposed in an annular groove of the yoke member and an oscillating member disposed on one side of said yoke member where the annular groove is open with a predetermined axial distance therebetween, the yoke member being fixedly supported by the second mounting member, while the oscillating member being fixed to the movable plate, so that the oscillating member is oscillated by the magnetic attraction generated upon energizing the coil so as to displace the movable member, wherein at least one of the open end portions of an inner and an outer circumferential wall portion of the yoke member is directly opposed in an axial direction to an inner and/or an outer circumferential portion of the oscillating member, and the oscillating member having an axial protrusion.
摘要:
A fluid-filled active vibration damping device including: (a) an elastsic body which elastically connects first and second mounting members and which partially defines a fluid chamber filled with a non-compressible fluid; (b) an oscillating member which partially defines the fluid chamber; (c) an electromagnetic actuator for oscillating the oscillating member; (d) a stabilizing member which is disposed on the side of the oscillating member that is remote from the fluid chamber, and which is opposed to and spaced apart from the oscillating member in an oscillation direction of the oscillating member; (e) first and second elastic supports through which the respective oscillating and stabilizing members are elastically supported by the second mounting member; and (f) a connecting member which connects the oscillating and stabilizing members, so as to provide a displaceable assembly which is displaceable relative to the second mounting member.
摘要:
Disclosed is a fluid-filled cylindrical vibration damping device including an elastic body interposed between an inner and outer sleeves for elastically connecting these sleeves with each other. A plurality of fluid chambers filled with a non-compressible fluid are partially defined by the elastic body so that a pressure of the fluid in the plurality of fluid chambers vary upon application of a vibrational load to the vibration damping device. A first orifice passage permitting a fluid communication between the fluid chambers is at least partially defined by an elastic member adapted to be subjected to shear deformation due to a fluid pressure acting on the first orifice passage so that a cross sectional area of the first orifice passage increases according to an increase of the pressure of the fluid acting on the first orifice passage owing to the shear deformation of the elastic member.
摘要:
A pregrouted base plate and the method of its use and construction with rotating machinery such as pump and electric motor assemblies that are coupled together by a pair of shafts and require precise alignment of those shafts for a long and dependable service life is disclosed. The pregrouted base plate is formed as a generally rectangular parallelepiped structure with one side open. The novel method of its use includes pregrouting the baseplate before installation, curing the grout and machining the mounting surfaces for the rotating machinery before field installation to ensure precise alignment of the pump and motor shafts. A second embodiment is shown with an open frame having two sides open.