agnetic rheological shock-absorber // 2561610
FIELD: machine building.SUBSTANCE: shock-absorber contains casing with the hydraulic cavity filled with the magnetic rheological liquid. The channel connects two parts of the cavity. Stock contains wires and magnet. The magnet contains two concentric solenoids. The control device changes current in the magnet winding depending on speed of the piston movement. The solenoid sensor supplied to the control device the electric signal proportional to speed of the piston movement. The speed sensor is made in form of the solenoid winding secured on the stock and moving in the magnetic field of the neodymium magnet.EFFECT: improved damping characteristics.2 dwg

Built-in quick-action shutoff valve // 2519328
FIELD: machine building.SUBSTANCE: group of inventions relates to machine building. A shock absorber comprises a cylinder, a piston casing with compression and return channels, a piston rod. The first valve unit including the first valve disk and the second valve unit are engaged with the piston casing. A normally open valve receiving the piston travelling is connected to the piston rod and comprises the second valve disk. A shock absorber as per the second version additionally comprises a tube embracing the cylinder and forming a container chamber, and a base valve unit set between the working chamber and the container chamber. A shock absorber as per the seventh version additionally comprises the second piston with a channel engaged with the cylinder and set inside one of the working chambers. Other versions of a shock absorber are characterised by the location of the second valve disk.EFFECT: faster action of valve units in a shock absorber.66 cl, 14 dwg

Oscillation damping method and device for its implementation (versions) // 2482347
FIELD: machine building.SUBSTANCE: inclination angle of relationship between resistance force modulus and deflection speed modulus of an elastic member is changed if current resistance force modulus differs from the specified value. The specified value of resistance force is changed depending on current deflection of the elastic member. The specified current value of resistance force is set so that it is directly proportional to modulus of current deflection of elasticity force, which is corrected to resistance force vector, of the elastic member of its static value. The device for implementing the method represents a hydraulic telescopic damper, in which the resistance force, the modulus of which depends on the modulus of deflection variation speed, is created during the suspension deflection variation. As per the first version, the damper includes a bar fixed at the compression chamber bottom. The bar has a four-sided variable cross-section in the working section of its length. At the damper compression, the bar is retracted into inner cavity of the stock. As per the second version, the damper includes two bars, as well as a compensating chamber that is separated from the compression chamber with a partition wall and partially filled with liquid. The bars are made in the form of a rotation body and installed inside the first and the second guide elements respectively with possibility of longitudinal movement.EFFECT: preventing resonance, and minimising the resultant force acting on the under-spring mass of the transport vehicle.17 cl, 10 dwg