ethod and device for dynamic oscillations suppression // 2604250
FIELD: machine building.SUBSTANCE: group of inventions relates to machine building. Vibrations are damped on base side with help of inertial masses, located on levers junctions. Enabling expansion of oscillation damping frequencies range due to additional inertial masses inertia forces, installed at lower levers junctions points with controlled pneumatic element. Device contains spring, arranged perpendicular to base. Diamond-shaped lever system comprises hinges at upper and lower levers junction points. Spring connects rhomboid system lower levers and located parallel to base. Pneumatic element controls total stiffness of system and located parallel to base. Pneumatic element ends are connected with lower levers extensions. Additional masses are located in connection points and provide inertial forces creation, acting in opposite direction relative to base disturbing forces at all frequencies of given range.EFFECT: enabling expansion of dynamic oscillations suppression frequencies range.2 cl, 4 dwg

Damping device for vibrations dampening // 2579860
FIELD: machine building.SUBSTANCE: invention relates to machine building. The damping device (10) contains a first section (20) with a support assembly of the first section, made with possibility to support the vibration equipment (140). The second section (30) contains the support assembly of the second section, made with possibility of the dampening device suspension. One or more adsorbers (40) filled with fluid are connected with the fluid source. The vibration results in the first section displacement relatively to the second section. The fluid control system is functionally connected with the feedback displacement assembly, is connected and controls the fluid removal from one or more adsorbers.EFFECT: increased wear resistance, change of dampening properties depending on vibration value.26 cl, 22 dwg

Oscillation effecting method // 2567719
FIELD: machine building.SUBSTANCE: invention relates to machine building. The method includes the creation between adjacent bodies of the system mutually series connected by means of elastic elements of bodies one of which is elastically connected with the support. The forces are created which are equal by the value and the direction to the damping or exciting force applied between the body selected for damping or initiation of oscillations and the body adjacent to it from the support side. Additional forces create between all adjacent bodies, starting from the closest body to the selected one from the support side and finishing by the body, closest to the support. The damping, exciting and additional forces are created by deformation of elastic elements or electromagnetic effecting. Deformation of elastic elements is performed by means of the hydraulic cylinders installed in series with the elastic elements. Electromagnetic effecting is created by means of solenoids installed parallel to elastic elements or linear electric motors.EFFECT: efficient effecting the oscillations of multimass dynamic system at damping or initiation of oscillations of one or several selected bodies of system is achieved.3 cl, 11 dwg

Oscillation suppression device // 2498126
FIELD: machine building.SUBSTANCE: device comprises resilient members and a dynamic oscillation suppression system in the form of elastically connected mass. Protected unit comprises an adjustable system of dynamic oscillation suppression. The dynamic suppression system consists of a pneumocylinder with a valve, a compressor with a pipeline and a control system with sensors. The pneumocylinder is fixed at a base plate travelling in a dovetail joint by means of a self-stopping screw-type device. The sensors are mounted on the protected unit and on the dynamic oscillation suppressor and transmit data on the protected unit state and the dynamic supressor to the data processing unit in order to decide on the actuation of the compressor and the screw-type device.EFFECT: dynamic suppression of oscillations under two freedom stages.2 cl, 1 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

ethod of damping // 2481508
FIELD: machine building.SUBSTANCE: elastically damping links are arranged between protected object and structure and composed of two-way hydro pneumatic dampers with stepped elastic characteristic of expansion and contraction. Under acting dynamic loads, limited force consisting of the sum of elastic and damping forces is transferred from structure via damper to object. Damper elastic characteristic step is obtained by subtracting extra rod reaction from reaction of the main rod in damper stroke from initial position to expansion position. Step magnitude is obtained by setting extra rod area in the range of 10…40% of main rod area and gas pressure. Length of elastic characteristic ride-drop section from initial position in transition zone is set to 2…5% of damper contraction-expansion stroke. Elastic element with stroke of 2…5% of said damper stroke is arranged between damper casing and extra rod. Damper gas cavity volume is calculated. Working point of weight load is located in aforesaid transition zone of elastic element contraction between main and extra rods.EFFECT: higher damping efficiency, decreased overall dimensions and weight.6 dwg

Hydro pneumatic damper // 2481507
FIELD: machine building.SUBSTANCE: proposed damper comprises case 1 connected with entity to be damped. Main rod 2 is attached to base by appropriate attachment assembly 3. Cylinder 5 arranged inside main rod 2 to make along with its wall an annular gas cavity 6 communicated via holes 8 with gas cavity of case 1. Cylinder 5 houses extra rod 4 with hollow rod 10 with piston 11 secured thereto. On one side rod 12 with piston 13 is located in hollow rod 10 while, on opposite side, it has its end coupled with case 1. Main rod 2 houses dividing piston 15 fitted on hollow rod 10 to seal hydraulic cavities 15 and 16 relative to case gas cavities 9.EFFECT: decreased dimensions, higher capacity, reduced dynamic load transmitted to damped entity.2 cl, 3 dwg

Vibration isolator // 2480643
FIELD: machine building.SUBSTANCE: vibration isolator contains the first and the second base, bearing flexible element and hydraulic damper attached between bases and two retainers. Hydraulic damper is made in a form of cylinder with piston and rod. At the bottom front part of the cylinder there is a subsidiary cavity and installed valve and throttling element. The valve is designed for fluid passing from subsidiary cavity to under-piston cavity of the cylinder. Subsidiary cavity is connected to above-piston cavity of the cylinder by hydraulic channel. Throttling element is designed for fluid passing from under-piston cavity into subsidiary cavity with obtaining stepped characteristic of dissipative force. The first retainer is attached to the first base and pin-connected to the rod. The second retainer is fixed on the second base and pin-connected to the cylinder. These two connections provide horizontal location of hydraulic damper.EFFECT: increase of vibration isolation efficiency of objects via obtaining optimal stepped-falling characteristic of compensating influence.5 dwg

Viscous friction vibration damper // 2475660
FIELD: machine building.SUBSTANCE: vibration damper includes a post, in which two hydraulic cylinders are located, one of which is located in horizontal plane, and the other one is located at an angle of 20° to vertical plane, which are connected to hydraulic system. Hydraulic cylinder includes a hollow plunger with a roller having the possibility of back-and-forth movement along a guide bushing. Plunger is connected to a flexible membrane fixed on the housing of hydraulic cylinder. Hydraulic cylinders are connected through connection pipes to a hydropneumatic accumulator through a check valve and a throttle controlled from the control system.EFFECT: improving the efficiency and quick action of vibration damper.3 dwg

Hydraulic damper for reduction of vertical and/or horizontal vibrations of facility or mechanism structure // 2474738
FIELD: machine building.SUBSTANCE: damper includes at least two chambers partially filled with liquid, which are interconnected with each other on their lower ends. At least one chamber is tightly closed on its upper end so that a closed air space is formed above liquid. At least one other chamber on its upper end is opened at least partially. Closed air space (V0) is divided at least into two air sections (V01-V0n). One air section (V01) is located immediately above liquid (3), and one or more air sections (V02-V0n) are connected to air section(V01) located immediately above liquid (3), and/or with the corresponding neighbouring air section (V02-V0n) through holes (7). Holes (7) are made so that they can be closed with a seal irrespective of each other by means of valves. Sensor (10) determines the load variation, and thus natural vibration frequency of facility or mechanism structure. Measurement values of sensor (10) are used with control unit (8) so that value of closed air space (V0) can be controlled by valve opening and closing.EFFECT: achieving the possibility of adjusting the damping value with low energy consumption considering dynamically varying load.6 cl, 10 dwg

Electropneumatic flexible member // 2442918
FIELD: machine building.SUBSTANCE: invention refers to damper devices, particularly those which use gas in the chambers with elastic walls. The device includes main flexible element (1), auxiliary flexible element (7) and dynamic oscillation absorber in the form of electric motor (22). Both flexible element are connected to each other with tough connection of upper end (16) of auxiliary tank (4) with base (18) of the auxiliary additional tank (10). Each flexible element is equipped with damping device consisting of electromagnetic valve, driven by the control system (21). Dampered object is connected to electropneumatic flexible element with supports (19) connected to the additional tank (4). Electric motor (22) is located at the bottom of auxiliary additional tank (10), connected to the control system (21) and has roll on the shaft with cable (25) reeled around it.EFFECT: increase of damper properties.3 cl, 2 dwg

Procedure for damping mechanical oscillations and device for its implementation // 2412388
FIELD: machine building.SUBSTANCE: device for damping mechanical oscillations consists of chamber, of flexible shell installed in chamber and forming pressure tight cavity. A cartridge with slots is installed inside this cavity by means of flanges. By means of pipelines and via an electric valve outside the chamber the pressure tight cavity of the shell is alternately connected to a source of compressed air and to atmosphere via an exhaust branch. A sensor of relative transfers is coupled with input of a control block of the electric valve, outputs of which are connected to winding of movable coils and electric valve. The chamber contains the flexible element and a slotted spring secured on rods and positioned with a little gap between the flexible element and the flexible shell. The procedure for damping mechanical oscillations consists in power and weight transfer between a deformed and an accumulating element by means of discrete commutation of flexible elements.EFFECT: raised efficiency of oscillation damping in resonance zone.2 cl, 2 dwg

Vibration isolator // 2382254
FIELD: machine building.SUBSTANCE: invention relates to devices of vibroprotective engineering. Vibration isolator contains the first and the second basis, bearing resilient element and damper, fixed between basis, control assembly, stiffness corrector, displacement pickup and electromagnet. Damper is implemented in the form of goffered cylinder, in butt of which it is installed throttle and built-in the second electric valve. The second electric valve is connected to the second outlet of control assembly. Stiffness corrector consists of hydraulic cylinder with piston and rod and two springs, installed inside the "П"-shaped frame. Over- and under-piston cavities of hydraulic cylinder are connected by channel with built-in the first electric valve, connected to the first outlet of control assembly. Rod is pivotally fixed on the first basis, and ends of springs - on casing of hydraulic cylindera and on "П"-shaped frame. Displacement pickup is installed on the first basis and is connected to inlet of control assembly. Electromagnet is fixed on "П"-shaped frame and is connected to the third outlet of control assembly. Limb of magnet is connected by rod to casing of hydraulic cylinder.EFFECT: there is achieved reliability growth of vibration isolator and effectiveness of objects protection against force impact by means of reduction of number of switching of stiffness corrector.3 dwg

Dynamic damper // 2374520
FIELD: machine building.SUBSTANCE: invention relates to devices of vibroprotective technology and is provided for reduction of oscillation intensity of object connected by bearing resilient member with basis. Damper contains oscillator, control assembly, the first and the second speed transducer, executive setting, electrically connected to outlet of control assembly. Oscillator is implemented in the form of mass connected to object by resilient member. The first speed transducer is installed on object and is connected to the first outlet of control assembly. The second speed transducer is installed on the basis and is connected to the second inlet of control assembly. Executive device is implemented in the form of hydraulic cylinder with pin and rod. Over-piston and under-piston cavities of hydraulic cylinder are connected to the first channel with built-in electric valve and the second channel with built-in throttle. Electric valve is electrically connected to outlet of control assembly. Hydraulic cylinder is pivotally fixed on object. Rod is pivotally fixed on the basis.EFFECT: increasing the efficiency of object vibroprotection.2 dwg