Vibration absorption device

FIELD: machine building.

SUBSTANCE: vibration absorption device includes a housing of an arbitrary shape, for example cylindrical, which is tightly closed with an elastic diaphragm. Pneumatic elements made in the form of closed elastic cavities are arranged in the housing and connected to each other. Cavities of the pneumatic elements are filled with compressed air and connected to each other with damping elements. A compressed air source is connected to one of the pneumatic elements, and a control valve of pressure in cavities of pneumatic elements is connected to the other one.

EFFECT: higher vibration isolation efficiency.

3 cl, 3 dwg

 

The invention relates to a combined remedies operator and equipment from vibration.

The closest technical solution to the stated object is a means of protection against vibration by A.S. USSR №1879826, CL F16F 13/08, from 04.10.1989, containing cavity, associated with a source of compressed air and having a valve for regulating the pressure (prototype).

A disadvantage of the known technical solution is relatively low degree of vibration isolation due to the absence in the pneumatic system of the damping elements.

Technically attainable result - increasing the effectiveness of vibration isolation and reliability protect the operator from vibration.

This is achieved by the means of vibration absorbing containing cavity, associated with a source of compressed air and having a valve for regulating the pressure contains at least two interconnected pneumologist made in the form of closed elastic cavities filled with compressed air and connected with each other damping elements, and one of the air suspension elements connected to the compressed air source and to the other valve for regulating the pressure in the cavities of the pneumatic members which are placed in the body of an arbitrary shape, for example cylindrical, hermetically closed by an elastic membrane.

Figure 1 is schemat the Cesky presents a system of pneumatic members of arbitrary shape, figure 2 - system air suspension elements of the spherical shape, figure 3 - valve for regulation in the cavities of the pressure pneumatic members.

Tool vibration absorbing contains at least two interconnected pneumologist 1 made in the form of a closed elastic cavities (figure 1), is filled with compressed air and connected damping elements 2. To one of the pneumatic members 1 connected to the compressed air source 12 and to the other valve 9 for regulating the pressure in the cavities of the pneumatic members 1. Thus, at the input to the system is the pressure P, and the output - P1than ensure the required capacity of the means of vibration. The pneumatic members 1 can be performed, for example, a spherical shape (figure 2). The pneumatic members 1 are accommodated in the housing 11 of arbitrary shape, for example cylindrical, hermetically closed by the elastic membrane 10, made for example from a sheet of elastic material, or a flat rubber-shell, or rubber layer or shell of three layers: an outer friction layer, for example, from metal mesh, containing strong elastic fibers, elastic medium knitted layer, for example, from an elastic synthetic fibers and an inner layer made of a solid protective material, such as technical fabrics.

CLA is an 9 (3) for regulating the pressure in the cavities of the pneumatic members 1 is installed in the housing 11 and consists of a Cup 3, fixed open end bearing annular flange 4, on pneumobilia and having on the side surface of the hole 5 and on the bottom of the shank 6 with a measuring risk and coaxially mounted on it with the ability to be moved and fixed and spring-loaded relative to the flange 4 of the sleeve 7 to overlap when moving the holes 5, and the fixing sleeve 7 is carried by the thread that runs on the external lateral surface of the Cup 3. The sleeve 7 is spring-loaded relative to the flange 4 by a spring 8.

Tool vibration absorbing provides protection in the following way.

When installing the sleeve 7 in a certain position relative to the flange 4 varies the orifice area 5, i.e. the pressure release P1. As a result, in the cavity of the pneumatic members 1 set pressure difference (P-P1depending on the magnitude of the excess parameters of vibration of the vibration source relative to the marginal spectrum. Changing the pressure of the compressed air increases the loss of mechanical energy during the passage of cavities 1 pneumatic members under variable pressure of compressed air, and also due to the throttling of air through the damping elements 2. The connection cavities 1 pneumatic members with a source of compressed air 12 through the housing 11 through a flexible t is unaproved, located in the housing (not shown).

Increase the absorbing capacity of the system between the vibration source and the operator or equipment due to a change in pressure of the compressed air can provide stepless adjustment of the vibration protection system properties and as a result to increase the effect of protection from vibration around the standard frequency range. However, the installation between flange 4 and the sleeve 7 spring 8 provides reliable fixation of the sleeve 7 in any of the required regulatory process provisions.

This system provides a higher effect protection of the operator or equipment from vibrations at all frequencies, thereby reducing the risk of occurrence of vibroblade workers, working, for example, on revealing tool or equipment, as well as to increase the degree of protection against vibration of stationary equipment.

1. Tool vibration absorbing containing cavity, associated with a source of compressed air and having a valve for regulating the pressure, characterized in that it contains at least two interconnected pneumologist made in the form of closed elastic cavities filled with compressed air and connected with each other damping elements, and one of the air suspension elements connected to a source of compressed the th air and to the other valve for regulating the pressure in the cavities of the pneumatic members which are placed in the body of an arbitrary shape, for example cylindrical, hermetically closed by an elastic membrane.

2. Tool vibration absorbing according to claim 1, characterized in that a valve for regulating the pressure in the cavities and air suspension elements installed in the housing and consists of glass, secured the open end of the bearing ring flange, pneumobilia and having on the side surface of the hole and on the bottom of the shank with a measuring risk and coaxially mounted on it with the ability to be moved and fixed and spring-loaded relative to the flange sleeve to overlap when moving holes, and the fixing sleeve carried by the thread that runs on the external lateral surface of the Cup and the sleeve is spring-loaded relative to the flange by a spring.

3. Tool vibration absorbing according to claim 1, characterized in that the elastic membrane is hermetically closing the housing made, for example, from a thin sheet of elastic material or flat rubber-shell, or rubber layer or shell of three layers: an outer friction layer, for example, from metal mesh, containing strong elastic fibers, elastic medium knitted layer, for example, from an elastic synthetic fibers and the inner layer is made of a solid protective material, for example, technical fabrics.



 

Same patents:

Damper // 2500935

FIELD: machine building.

SUBSTANCE: damper (3) includes closed tank (4) filled with liquid or gaseous medium. Tank (4) is made from elastic material and divided with a narrowing into the first (6) and the second (7) chambers. The first chamber (6) is enclosed with tubular cover (9) and has the possibility of volume reduction due to piston (10) that is submerged into cover (9) and exerts pressure on tank (4). The second chamber (7) has the possibility of free expansion with rise of correction forces of cover (7a) of the chamber.

EFFECT: improving damper reliability.

6 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: proposed damper comprises holder 1 and punch 2 interconnected by elastic resilient element 3. Solenoids 4, 5 are arranged coaxially therewith and with each other. Composite core 6 is rigidly connected with holder. Two magnetic parts 7, 8 of said core are arranged at equal distance between solenoid coils in the position of static equilibrium. Nonmagnetic spacer 9 is arranged between solenoid magnetic parts. Solenoid coils are connected to power supply via control units power switches 10. Windings 11, 12 of object displacement transducer arranged inside solenoid coils and aligned therewith are connected to control unit.

EFFECT: higher efficiency of damping and smooth run.

2 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: unit of vibration absorption consists of two interconnected pneumatic elements made as closed elastic chambers filled with compressed air. The pneumatic elements are interconnected and connected with a source of compressed air by means of damping channels. The channels are flexible tubes made of elastic material with a calibrated internal cylindrical surface having throttling properties. The system of pneumatic elements or each of them are separately enclosed in a shell of three layers. The outer antifriction layer is made, for example, of woven-wire-cloth containing strong elastic fibres. The middles elastic woven layer is made, for example, of elastic synthetic fibres. The inner layer is made of solid protective material, such as industrial fabric. One of the pneumatic elements is connected to a valve for controlling pressure in the chambers of pneumatic elements, and the other one is to a source of compressed air.

EFFECT: increased efficiency of vibration isolation.

2 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to antivibration equipment, namely, to support antivibration elements for large-size structures. Suspension comprises rubber-cord shell 1 with cover 2 that make main working chamber 3 and additional chamber 4, web 5 with hole to communicate said with solenoid valve 6 arranged therein. Additional chamber 4 accommodates dynamic vibration killer including motor 7 with its shaft 8 supporting drum 8 with cable 10 wound thereon, and cable tensioner 11 arranged on said web 5. One end of said cable 10 is fixed in cable tensioner while opposite end is fixed on cover 2 of chamber 3. Valve 6 and motor 7 are connected with control unit 17.

EFFECT: higher damping properties.

3 cl, 3 dwg

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

FIELD: transport.

SUBSTANCE: invention relates to automotive industry and may be used in automotive suspensions. Suspension flexible element represent soft hill-shape shells filled with gas under pressure. Said shells are secured to each other while their inner spaces are communicated to make unified chamber. Flexible rings are fitted regularly on each shell. Rigidity and stability of the device is ensured by backstays made from elastic flexible material. Said backstays are secured to flexible rings on one side, and, one the other side, to rigid ring.

EFFECT: less metal-intensive guide and damping devices.

2 dwg

FIELD: machine building.

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EFFECT: reduced probability of breakdown due to sharp increase of rigidity characteristics of pneumatic magnet suspension.

3 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: pneumatic flexible element contains main flexible element (1) consisting of rubber-cord casing (RCC) (2), working (3) and additional (4) reservoir and of partition (5) set between them with electro-magnetic valve (EMV) (6), and auxiliary flexible element (7) consisting of auxiliary RCC (8), auxiliary working (9) and additional (10) reservoir and auxiliary partition (11) set between them with EMV (12). Main flexible element (1) is enclosed in first cylinder cartridge (13). Auxiliary flexible element (7) is enclosed into second cylinder cartridge (16) coaxial to first cylinder cartridge (13) and installed in orifice (14) of first cylinder cartridge (13). Both additional reservoirs (4) and (10) are rigidly interconnected by means of hollow rod (22) connecting the reservoirs continuously. Auxiliary additional reservoir (10) is made in form of third cylinder cartridge (18) along its lower ends having centring rollers (19) contacting internal surface of second cylinder cartridge (16). Orifice (23) connecting cartridge with atmosphere is made in a bottom of second cylinder cartridge (16). EMV (6) and (12) are connected to control unit (27).

EFFECT: increased damping qualities and simplified design.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: pneumatic flexible element contains main flexible element (1) consisting of rubber-cord casing (RCC) (2), working (3) and additional (4) reservoir and of partition (5) set between them with electro-magnetic valve (EMV) (6), and auxiliary flexible element (7) consisting of auxiliary RCC (8), auxiliary working (9) and additional (10) reservoir and auxiliary partition (11) set between them with EMV (12). Main flexible element (1) is enclosed in first cylinder cartridge (13). Auxiliary flexible element (7) is enclosed into second cylinder cartridge (16) coaxial to first cylinder cartridge (13) and installed in orifice (14) of first cylinder cartridge (13). Both additional reservoirs (4) and (10) are rigidly interconnected by means of rod (22). Auxiliary additional reservoir (10) is made in form of third cylinder cartridge (18) along its lower ends having centring rollers (19) contacting internal surface of second cylinder cartridge (16). Orifice (23) connecting cartridge with atmosphere is made in a bottom of second cylinder cartridge (16). EMV (6) and (12) are connected to control unit (26).

EFFECT: increased damping qualities and simplified design.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: pneumatic flexible element consists of main flexible element (1) made of rubber cord casing (2), working (3) and additional (4) reservoirs and partition (5) positioned between them with calibrated orifice (6) and orifices (7) overlapped with free laid diaphragm (8) at return run. Also, the pneumatic flexible element has auxiliary flexible element (10). Main flexible element (1) is enclosed into first cylinder cartridge (19) having orifice (20) on end (21) of the cartridge. Auxiliary flexible element (10) is enclosed into second cylinder cartridge (22) coaxial to first cylinder cartridge (19) and installed in its orifice (20) on end (21). Additional reservoirs (4) and (13) are interconnected by means of rod (28) connecting their partitions and passing through both working reservoirs (3) and (12) and through orifice (27) with packing on end (26) of second cylinder cartridge (22). Auxiliary additional reservoir (13) is made in form of third cylinder cartridge (24) having centring rollers (25) along its lower end contacting internal surface of second cylinder cartridge (22). Orifice (29) connecting cartridge with atmosphere is made in a bottom of second cylinder cartridge (22).

EFFECT: simplified structure, facilitating connection of damped object from different sides.

2 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: positioning system includes installed on a frame processing unit in the form of a pump and an electric motor. Compensating hydraulic cylinders are installed between the frame of processing unit and a fixed base sidewise to the supply pipe. Cavities above a piston are connected to each other and to the discharge pipe. Cavities under the piston are connected to each other and to the supply pipe.

EFFECT: preventing the frame shift with respect to the unit axes.

2 dwg

FIELD: machine building.

SUBSTANCE: device includes rotor (1) supported with a turning support in the form of elastic rod (2) with a rounded end installed in cavity of centre plate (6) fixed on damper (7) submerged into damping liquid (8), housing (9) rigidly attached to rotor (1) and located between the turning support and rotor (1), and a control device installed in housing (9) and connected to the turning support. The control device is made in the form of one or a set of washer plates (10; 11) alternating between themselves. Washer plates (10) are installed along inner diameter on rod (2) and have gap (δ1) to housing (9) along outer diameter. Washer plates (11) are installed along outer diameter in housing (9) and have gap (δ2) along inner diameter to rod (2). Washer plates (10; 11) in the device are pressed in axial direction with the spring installed in housing (9).

EFFECT: creation of a simple design of a rotation stabilising device of a high-speed rotor with high efficiency in wide frequency range without load increase in the support at stable rotation.

9 cl, 5 dwg

Compensator // 2478846

FIELD: machine building.

SUBSTANCE: compensator is formed with bellows, which is reinforced with metal rings and equipped with flanges. Bellows are filled with elastic-deformable substance, sealed with plugs and placed into a cylinder. Cylinder is equipped with a base on one side and with a piston on the other side. Piston is adjacent with its end face to the bellows plug and transmits external force actions to the bellows.

EFFECT: elimination of relaxation and shrinkable phenomena, maintenance of preliminary stress at the constant specified level.

1 dwg

FIELD: transport.

SUBSTANCE: invention relates to railway transport. The system contains vertical hydraulic dampers installed under body. Each damper is made as piston pump with discharge and free-flow intercommunicating via throttle chambers for working fluid. The throttle is equipped with rod of variable cross-section with thrusts for end positions. Throttle rod movement drive is made as return spring and solenoid. Solenoid core is connected with throttle rod. Solenoid coils are attached to output terminals of control unit. Input terminals of control unit are connected with electric power source and oscillation frequency sensors installed on body in the area of each damper location. Control unit provides automatic change of end positions of throttle rod by solenoid electric power switching on or off according to indications of corresponding sensors of body vibration frequency.

EFFECT: design simplification and improvement of car movement smoothness.

3 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: device includes elongated element (7) that passes along inner space of drive shaft; at that, one end of element is fixed on one shaft end, and the other end of element is located at the other end of shaft and hydraulic damping device (11) fixed on the other shaft end for damping of vibrations of the other end of element (7). Damping device (11) includes cylinder-piston system (25) having the first and the second cylindrical hydraulic chambers (45a, 47a), tank (19) for hydraulic fluid and hydraulic circuit (29, 31, 33, 35), by means of which chambers (45a, 47a) are connected to hydraulic fluid tank (19). Damping device (11) is located so that any leak flow of hydraulic fluid from the first (45a) and the second (47a) chambers through the boundary line between piston and cylinder flows to hydraulic fluid tank (19).

EFFECT: creation of more compact design of hydraulic damping device of torsion excitation of hollow drive shaft with possibility of controlling the damping level and operating without cavitation.

12 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: shock absorber includes hydraulic cylinder, each of the cavities of which is connected to the main elastic elements by means of system of valves and throttles, and to hydropneumatic accumulators of high and low pressure through normally open non-return valves and throttles of constant section.

EFFECT: protection of equipment against impact loads.

2 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to devices for transporter-launcher container (TLC) suspension. System of vertical cushioning includes pendulum gear containing surrounding TLC resting device which is kinematically connected using two first links with pneumatic shock absorbers which are installed on corresponding stationary platforms installed in the upper part of mine construction (MC). Plunger of each pneumatic shock absorber is contacting with rocker arm which is by its one end fixed on MC wall with possibility to rotate in vertical plane and by its other end is connected with the first link. Resting device is made as pivotally connected with the first links power ring on which bearing are mounted in which stud bolts are installed on which drum is fixed. Each stud bolt is made with axial bolt interacting with mating spherical pivot mounted on TLC. On the drum along circumference, radial retainers are installed which interact with mating TLC elements. System of horizontal cushioning includes upper and lower tiers of cushioning each one of which contains four damping devices which are fixed on MC wall and via lever mechanisms with the second links are kinematically connected with TLC using corresponding adapters.

EFFECT: higher reliability of device for TLC cushioning.

3 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: unit of vibration absorption consists of two interconnected pneumatic elements made as closed elastic chambers filled with compressed air. The pneumatic elements are interconnected and connected with a source of compressed air by means of damping channels. The channels are flexible tubes made of elastic material with a calibrated internal cylindrical surface having throttling properties. The system of pneumatic elements or each of them are separately enclosed in a shell of three layers. The outer antifriction layer is made, for example, of woven-wire-cloth containing strong elastic fibres. The middles elastic woven layer is made, for example, of elastic synthetic fibres. The inner layer is made of solid protective material, such as industrial fabric. One of the pneumatic elements is connected to a valve for controlling pressure in the chambers of pneumatic elements, and the other one is to a source of compressed air.

EFFECT: increased efficiency of vibration isolation.

2 cl, 4 dwg

FIELD: construction.

SUBSTANCE: shock-absorbing device comprises a telescopic guide device (2), support boards (10), an elastic element (1). A telescopic guide device (2) is made in the form of opposite external (3) and internal (4) sleeves with a rubber-cord shell (5) and aligning elements (6, 7) installed between them. The elastic element (1) is made in the form of pneumatic shock absorbers arranged evenly around the external sleeve (3) of the telescopic guide device (2) They consist of a body (12), a plunger (13), a rubber-cord shell (14) between them and aligning elements (15, 16). Longitudinal axes of pneumatic shock-absorbers of the elastic element (1) are arranged at the angle 40°-70° to the longitudinal axis of the guide device (2). Plungers (13) are connected in a hinged manner to boards (17), installed on the sites of the base ledges (18). At the end of the inner sleeve (4) of the telescopic guide device (2) there is a tight partition (20) installed with a valve electromagnet device (21). At the ends of plungers of all pneumatic shock-absorbers there are tight partitions installed with valve electromagnet devices.

EFFECT: improvement of device damping properties.

3 cl, 3 dwg

Rotor support // 2419000

FIELD: machine building.

SUBSTANCE: support consists of half-couple rotating and coupled with machine case directly or via damping unit. Contacting surfaces of the half-couple are spherical or of close to spherical shape. The rotating half-couple connected to the rotor, is made out of metal. Another half-couple is made completely out of ceramic material on base of aluminium and zirconium oxides, silicon carbide and nitride with dimension of particles up to 30 mcm.

EFFECT: durable wear resistant and strong support of higher bearing capacity.

6 cl, 1 tbl, 1 dwg

FIELD: mechanical engineering.

SUBSTANCE: device comprises mechanism of carrying the reciprocation of the power plant and balancer. The carrying mechanism is made of a rod with double-action piston. The double-action piston is mounted in the oil chamber and rigidly connected with the working rods of the power plant. The balancer is made of cylindrical bushing set on the side surface of the double-action piston of the carrying mechanism. The balancer is also in a contact with the inner surface of the oil chamber for permitting rectilinear reciprocation under the action of the oil pressure in the direction opposite to that of the rod of the carrying mechanism.

EFFECT: simplified structure and enhanced reliability.

1 cl, 2 dwg

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