Unit of vibration absorbtion

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

 

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 a source of compressed air damping channels, representing a flexible tube of elastic material with a calibrated internal cylindrical surface having a throttling properties, all air suspension elements or each of them separately enclosed in a shell of t is ex layers: the outer, anti-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 fabric, with one of the air suspension elements connected to the valve for regulating the cavities of the pressure pneumatic members, and the other with a source of compressed air.

Figure 1 schematically presents the system air suspension elements of arbitrary shape, figure 2 - system air suspension elements of the spherical shape, figure 3 - connection of pneumatic members among themselves and with valve for regulation in the cavity of the pneumatic members pressure figure 4 - diagram of the valve for regulating the cavities of the pressure pneumatic members.

Tool vibration absorbing contains at least two interconnected pneumologist, for example, a spherical shape (figure 2), made in the form of closed elastic cavities (figure 1), is filled with compressed air and connected with a source of compressed air (not shown) of the damping channels 2, which represents a flexible tube of elastic material of length L with grooved inner cylindrical surface of diameter d, with throttling properties.

All air suspension elements or each is h, individually enclosed in a casing 10 (3) of three layers: the outer, anti-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. One of the air suspension elements connected to the valve 9 for regulating the cavities of the pneumatic members 1 pressure and the other with a source of compressed air (not shown).

The valve 9 (figure 4) consists of Cup 3, secured the open end of the bearing ring 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, 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 Δ. As a result, in the cavity of the pneumatic members 1 is set to a different pressure (P-Δ) depending on the magnitude of previdenciario 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 channel 2. The connection cavities 1 pneumatic members with a source of compressed air through flexible pipelines located along the contour lines of the object.

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.

1. Tool vibration absorbing containing cavity, associated with a source of compressed air and having a valve for regulating the project pressure characterized in that it comprises at least two interconnected pneumologist made in the form of closed elastic cavities filled with compressed air and connected with a source of compressed air damping channels, representing a flexible tube of elastic material with a calibrated internal cylindrical surface having a throttling properties, all air suspension elements or each of them separately enclosed in a shell made of three layers: an outer friction layer, for example of metal mesh that contains durable elastic fiber, medium elastic knitted layer, for example of an elastic synthetic fibres, and internal layer, made of a solid protective material, such as technical fabric, with one of the air suspension elements connected to the valve for regulating the cavities of the pressure pneumatic members, and the other with a source of compressed air.

2. Tool vibration absorbing according to claim 1, characterized in that the valve consists of a glass, fixed 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 is coaxially installed with the possibility of moving and fixing and spring-loaded relative to the flange of the Tulku to overlap when moving holes, when the fixation sleeve is 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 the spring.



 

Same patents:

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.

SUBSTANCE: pneumatic magnet suspension consists of rubber cord casing (2) with cover (3) forming main working cavity (4) located in cylinder case (1), of additional reservoir (5) of partition (6) between them with electro-magnetic valve (7) controlled with control system (8). Opposite and in pairs permanent magnets (11, 12) with magnetic poles of one polarity facing each other are arranged inside main working cavity (4) on cover (3) and on partition (6). Stops (9, 10) colliding at a pressure stroke are set on cylinder case (1) and on external surface of additional reservoir (5). When stops (9) of cylinder case (1) contact stops (10) of additional reservoir (5) at the compression stroke, an air gap between magnetic poles of opposite located permanent magnets (11, 12) is within ranges of 0-10 mm.

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: 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

FIELD: machine building.

SUBSTANCE: pneumatic shock absorber consists of ferrule (1) and puncheon (2) interconnected with elastic element (3). Mechanical connection is made in form of cable (5) connected to ferrule (1) by means of a fastening unit of cable (6). A correcting device is placed inside puncheon (2) and consists of electro-magnet coupling (7) with shaft (8) and drum (9) on it for winding cable (5). Device (10) of cable (5) pull is positioned inside puncheon (2) and consists of cylinder (11), spring (12) and holder (13) of cable (5). The second end of cable (5) is secured in device (10) of cable (5) pull by means of holder (13). Cable (5) is wound on drum (9) of electro-magnetic coupling (7) and is connected mechanically with ferrule (1) via orifice (14) of puncheon (2). Electro-magnetic coupling (7) is connected to control unit (15).

EFFECT: raised efficiency of shock absorber.

3 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: pneumatic shock absorber consists of sleeve (1) and puncheon (2) interconnected with elastic element (3). An electro-magnetic oscillating drive is installed inside puncheon (2). The drive consists of asynchronous electric engine (4) with rotor (5) and a stator, of transfer element with rim (6) mounted on fulcrum pin (9). Rotor (5) is rigidly connected with the transfer element, while rim (6) is rigidly coupled with rod (7). Rod (7) is rigidly tied with ferrule (1). Coils (8) are positioned on rotor (5). Facing each other surfaces of rotor (5) and stator (4) are made as cylinder sectors. Rotor (5) is placed beyond plane of transfer element rolling. Stator coils of electric engine (4) are connected to control unit (11).

EFFECT: raised efficiency of oscillation damping.

3 cl, 5 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: machine building.

SUBSTANCE: method consists in periodic decreasing restoring force of pneumatic suspension at beginning of each stroke of release by means of supplying additional volume of gas to one additional flexible element (4) from autonomous source of power (7) and by means of its withdrawal from this additional flexible element (4) at beginning of each stroke of compression to atmosphere. Additionally, at the beginning of each stroke of compression there is performed periodic supply of additional volume of gas to the second additional flexible element (5) from autonomous source of power (7), while its withdrawal to atmosphere from second additional flexible element (5) is made at the beginning of each stroke of release.

EFFECT: control of flexible damping characteristics of pneumatic suspension in all amplitude-frequency range of external force.

2 dwg

FIELD: machine building.

SUBSTANCE: elastic force of pneumatic suspension is periodically increased in the beginning of each compression stroke by supplying of additional gas mass to additional elastic element from autonomous source of energy. Elastic force of pneumatic suspension is periodically decreased in the beginning of each rebound stroke by partial removal of additional gas mass from additional elastic element into atmosphere.

EFFECT: invention provides for adjustment of elastic-damping properties of pneumatic suspension in the whole amplitude-frequency range of external action.

2 dwg

FIELD: machine building.

SUBSTANCE: method is implemented owing to periodic decrease of restoring force of main pneumatic flexible element (3) of suspension. At the beginning of each rebound stroke additional mass of gas is supplied to additional flexible element (4) from an autonomous energy source (7). Also electromagnetic force effecting damped object (1) is additionally and briefly created by means of auxiliary damping electro-magnetic element (5). At the beginning of each compression stroke additional mass of gas is withdrawn from additional flexible element (4) into atmosphere.

EFFECT: raised damping properties of pneumatic suspension in all amplitude-frequency range of external effect.

1 dwg

FIELD: machine building.

SUBSTANCE: anti-vibration platform consists of rigid frame, of floor and of flexible elements joining frame with base. The flexible elements are tied with the frame by means of hinged lever coupling the frame with a support element of a bumper. The bumper is equipped with flexible and damping elements and with a pendulum suspension all arranged in the case of the anti-vibration assembly. The case is formed with upper and lower bases rigidly connected to side plates and forming an aperture for projection of a bearing plate. With its one end the bearing plate is connected with the pendulum suspension, while with its another end it is connected with an object protected from vibration. An aperture for pendulum suspension rod passage is made in the upper base of the case. Diametre of the aperture coincides with diametre of internal cylinder surface of the damping element.

EFFECT: upgraded efficiency of vibration isolation and simplified design.

3 dwg

FIELD: machine building.

SUBSTANCE: anti-vibration system consists of at least four bumpers of different stiffness. A platform rests on two vertically arranged bumpers and of a bumping element. One bumper is installed over a free end of the platform and with another end it is attached to a lever. At least two bumpers are fastened to the lever on opposite sides relative to the free end of the platform. The bumping element formed with two axial cylinder sleeves is mounted on the opposite end of the platform. A pressure tight circular cavity is formed between external and internal sleeves. An upper part of the cavity is closed with a movable circular flange, while the lower one is closed with a circular washer. A circular piston with throttling holes is arranged in the circular cavity. The piston is hinged by means of at least three rods with the circular flange whereupon a spring rests. An upper base of the spring thrusts against a cover rigidly connected with a rod of the damper. A bushing is rigidly tied with the cover and operates as a guide for the spring. The rod is installed coaxially to sleeves. A lower end of the rod is connected with a vibration protected object, while an upper one is connected with the cover.

EFFECT: increased efficiency of anti-vibration in resonance mode.

3 dwg

FIELD: machine building.

SUBSTANCE: tuning to required damping frequency is performed. Dynamic rigidity or transfer factor dip is experimentally determined at first breadboard specimen. Then on increasing damper slit width, tuning frequency is increased along with increasing damping. Thereafter, tuning frequency is decreased by decreasing damper slit width. Aforesaid reduction is performed by increasing the number of slit pairs. Proposed device comprises interconnected pendulums pivoted to protected object. Each pendulum comprises weight suspended to aforesaid object. One object is located above the points of attachment of its suspension to the object, the others being located below aforesaid points. Tight cylindrical barrel is covered with cap and filled with hydraulic fluid. Movable modular hollow piston is arranged inside aforesaid cylindrical barrel fixed between two cylindrical springs. There is a system of channels inside aforesaid piston. It consists of top and bottom covers and uneven number of round plates. Aforesaid slits are formed by flat round rings arranged between aforesaid covers and plates. Former and latter comprise central bores, while even plates have peripheral orifices arranged nearby inner cylindrical surfaces of round rings.

EFFECT: higher efficiency.

2 cl, 3 dwg

FIELD: mechanics.

SUBSTANCE: support surface of rotor trunnion is made in the form of toroidal surface and installed on spherical support surface in cavity of support toe. The latter is installed on a damping element arranged in cavity of housing with lubricating liquid. Radius of toroidal surface of trunnion is 0.4÷0.95 of the radius value of spherical support surface of the toe, and distance between axial line of toroidal surface and trunnion axis is 0.05÷0.6 of the radius value of spherical support surface of the toe. Geometrical parametres of the support meet the ratio: , but not less than 1, where: r - radius of the toe sphere, m; ρ - radius of torodial surface, m; δ- distance between axial line of torodial surface and trunnion axis, m; P - axial load, H; F - radial load, H; β - slope angle of figure end from rotation axis under influence of radial load, rad.

EFFECT: increasing carrying capacity of support and decreasing costs for manufacturing and repairing thereof.

9 cl, 3 dwg

FIELD: mechanics.

SUBSTANCE: support surface of rotor trunnion is made in the form of toroidal surface and installed on spherical support surface in cavity of support toe. The latter is installed on a damping element arranged in cavity of housing with lubricating liquid. Radius of toroidal surface of trunnion is 0.4÷0.95 of the radius value of spherical support surface of the toe, and distance between axial line of toroidal surface and trunnion axis is 0.05÷0.6 of the radius value of spherical support surface of the toe.

EFFECT: increasing carrying capacity of support and decreasing costs for manufacturing and repairing thereof.

12 cl, 3 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

Up!