Shock-absorbing device

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

 

The invention relates to a device active seismic protection of buildings and structures and can be used in the suspension system (seismic isolation) for the protection of the reactor compartments of nuclear power plants from power effects during earthquakes.

Known damping device described in A.S. No. 2029155, MCL F16F 9/04 containing elastic element and covered them with a telescopic guiding device made in the form of oppositely directed outer and inner cups with centering elements mounted between them, and base plate. The elastic element is designed in the form of evenly spaced around the external Cup of pneumatic shock absorbers, each comprising at least a housing and a plunger, mounted respectively on the inner and outer cups, the bottom of each of the latter has a convex disc shape with an axial channel, the annular space around the latter in contact with the corresponding support plate, and a corner radius greater than half the distance between the support plates, the center of which in the longitudinal section of the guide device is located on a straight line, parallel to the longitudinal axis of the latter and passing through the transition line of the ring platform in the fillet, and a shock-absorbing device has placed in the proper Savich the channels and in contact with the cylindrical sliding bearings, pivotally connected to one ends of the respective base plate. Shock-absorbing device has a rubber sheath that connects the outer and inner cups and forming with them an additional pneumatic shock absorber.

The disadvantages of this device are the low stability of the position of depreciable object when exposed horizontal disturbing force, the low degree of self-restoration of the original position of depreciable object on the horizon, as the return of depreciable object in its original position on the horizon is mainly due to the horizontal component of the longitudinal (axial) efforts cushioning device occurring when the slope of the reciprocal displacement of the centers of the radii of the outer and inner cups of the sending device.

It is also known damping device described in the patent for invention № 2335672 RF, MCL F16F 9/04 (prototype)containing telescopic guiding device installed between depreciable object and the substrate and is made in the form of oppositely directed outer and inner cups with established between rubber shell and centering elements, a base plate mounted on depreciable object and the base, an elastic element in the form of evenly the positioning around the external Cup of pneumatic shock absorbers, comprising a casing, a plunger and a rubber membrane between them, the bottom of the outer and inner cups telescopic guide device has a convex disc shape with an axial channel, the annular space around the latter in contact with the corresponding support plate, and a radius greater than half the distance between the support plates, the center of which in the longitudinal section of the guide device is located on a straight line, parallel to the longitudinal axis of the latter and passing through the transition line of the ring platform in the fillet, and a shock-absorbing device has placed in the respective axial channels and in contact with the cylindrical sliding bearings, pivotally connected to one ends of the respective support plates according to the invention longitudinal axis of the pneumatic shock absorbers of the elastic element are arranged at an angle in the range of 40°-70°to the longitudinal axis of guide device, casing pivotally mounted to its exterior glass at the location of the rubber-shell guide device, and the plungers are connected pivotally with the plates installed on the grounds of the protrusions of the base forming with the base angle in the range of 110°-150°, and between the housing and the plunger of the pneumatic shock absorbers Ni is sustained fashion set centering elements.

The disadvantages of this device are low damping depreciable object when exposed vertical and horizontal disturbing force due to the passive nature of damping. Also the disadvantage of this device is that the shock-absorbing device does not provide a regulation provedeniya characteristics under influence of any external forces variable frequency and amplitude.

Object of the present invention is to improve the damping properties of the shock-absorbing device and regulate its provedeniya characteristics in the entire frequency range of the external action.

This object is achieved in that in the known shock-absorbing device containing a telescopic guiding device installed between depreciable object and the substrate and is made in the form of oppositely directed outer and inner cups with established between rubber shell and centering elements, a base plate mounted on depreciable object and the base, an elastic element in the form of evenly spaced around the external Cup of pneumatic shock absorbers, comprising a housing, a plunger and a rubber membrane between them, the bottom of the outer and inner cups of telescopic the ski guide device has a convex disc shape with an axial channel, the annular space around the latter in contact with the corresponding support plate, and a radius greater than half the distance between the support plates, the center of which in the longitudinal section of the guide device is located on a straight line, parallel to the longitudinal axis of the latter and passing through the transition line of the ring platform in the fillet, and a shock-absorbing device has placed in the respective axial channels and in contact with the cylindrical sliding bearings, pivotally connected by one end with the respective base plate, wherein the longitudinal axis of the pneumatic shock absorbers of the elastic element are arranged at an angle in the range of 40°-70° to the longitudinal axis of guide device, casing pivotally mounted its exterior glass at the location of the rubber-shell guide device, and the plungers are connected pivotally with the plates installed on the grounds of the protrusions of the base forming with the base angle in the range of 110°-150°, and between the housing and the plunger of the pneumatic shock absorbers are installed centering elements, according to the invention, on the end face of the inner glass telescopic guide device installed airtight partition with electromagnetic valve device is the your, at the ends of the plungers of all pneumatic shock absorbers also have a sealed septum valve with electromagnetic devices, each electromagnetic valve device is connected to a separate control system.

Each control system electromagnetic valve device has connected in series Converter of the moving object, the driver of the speed signal of the object, the control unit of the power key, the power key to connect the winding electromagnetic valve device to a power source.

The displacement transducer of each system control electromagnetic valve device and the control system can be located inside the corresponding pneumatic shock absorber or telescopic guide device.

The invention is illustrated by drawings, where

- figure 1 shows the proposed shock-absorbing device, a General view of the incision;

- figure 2 presents a top view of a damping device with a cross section a-a in figure 1;

- figure 3 presents the block diagram of the control system electromagnetic valve device.

Shock-absorbing device has an elastic element 1, a telescopic guiding device 2, made in the form of the outer Cup 3 the inner Cup 4, United rubber sheath 5. Between the outer 3 and the inner 4 cups of the sending device 2 installed centering elements in the form of rollers 6, 7. Thus, the rollers 6 are evenly mounted on the inner Cup 4 with the possibility of rolling on the outer surface of the inner Cup 4.

The bottom of both cups have a convex disc shape with an axial channel 8, in which the cylindrical sliders 9, pivotally connected to the base plate 10. Using base plates 10 shock-absorbing device is attached to depreciable object and the base. Each plate along the perimeter of the axial channel has a ring space (flats) 11, by means of which the bottom is in contact with the support plate 10. Each plate is made with a rounding radius R greater than half the distance between the support plates 10, the center of which in longitudinal section of the sending device 2 is located on the straight line parallel to the longitudinal axis of the device and passing through the transition line of the ring platform in the fillet.

The elastic element 1 is made in the form of evenly spaced around the outer Cup 3 pneumatic shock absorbers, which cover telescopic guiding device 2 and contain body 12, a plunger 13, the rubber-cord shell 14 and the centering elements in the form of rollers 15, 16. The housing 12 of the pneumatic internal line the definition of shock absorbers are attached pivotally to the outer Cup 3 telescopic guide device 2 at the location of its rubber-shell 5, the plungers 13 pneumatic shock absorbers are connected pivotally with the plates 17 mounted on the sites of the projections 18 of the base. The surface protrusions of the base forming with the base angle β in the range of 110°-150°. The longitudinal axis of the pneumatic shock absorbers of the elastic element 1 is formed in a static position, the angle α being in the range of 40°-70°with the longitudinal axis of the guide device 2.

In the bearing plates 10 are placed a set of rubber buffers 19 local short travel depreciation in contact respectively with the base or depreciable object. Thus, the shock absorbing device connects amortized object and the base by means of a telescopic guide device in the form of skittles with the disc surfaces and the elastic element in the form of pneumatic shock absorbers located at an angle to the guiding device.

At the end of the inner Cup 4 telescopic guide device 2 installed sealed wall 20 with an electromagnetic valve device 21. The partition 20 on the end of the inner Cup 4 telescopic guide device 2 forms two cavities: the upper working cavity 22 of variable volume and the bottom cavity 23 of the standing volume. At the ends of the plungers 13 all pneumatic shock absorbers t is the train set sealed walls 24 with the electromagnetic valve devices 25, each electromagnetic valve device is connected to a separate control system 26.

The control system 26 of the electromagnetic valve device 21, contains 25 connected in series displacement transducer 27 of the object, the imaging unit speed signal 28 of the object, the control unit 29 of the power key, the power switch 30 to connect the winding of the electromagnetic valve devices 21, 25 to the power source.

Cushioning device operates as follows.

The depreciation of the object in the vertical direction at the expense of the sending device 2 and the relative movements of the outer 3 and the inner 4 glasses and rolling rubber-shell 5 in the gap between them and the elastic element 1, with a relative movement of the housings 12 and plungers 13 and the rolling rubber-shell 14 in the gap between them. During the compression top volume of the working cavity 22 is reduced, the pressure of the compressed gas in it increases and becomes much larger than the cavity 23, the electromagnetic valve device 21 is closed. When the operating mode is changed with the progress of the compression stroke end control system electromagnetic valve device 26 connects short-term working cavity 22 and an additional cavity 23, the pressure in the cavity is aligned and reduces the energy of the compressed gas in the working cavity 22.

In the further course of the end volume of the working cavity 22 increases, the gas pressure is less than the additional cavity 23, while the electromagnetic valve device 21 is closed. When the mode is changed with the stroke end on the compression stroke control system electromagnetic valve device 26 connects short-term working cavity 22 and an additional cavity 23, the pressure in the cavities is aligned and increases the elastic force of the gas in the working cavity 22. Such work contributes to a more effective damping of depreciable object in the vertical direction. Similar to the damping will occur during operation of the pneumatic shock absorbers when there is movement of depreciable object on the horizon. Cushioning device provides a control provedeniya characteristics under influence of any external forces variable frequency and amplitude.

In the process of movement of depreciable object in any direction on the horizon is turning skittles and running her disc surfaces, i.e. rolling rounded bottoms external 3 internal and 4 cups of the sending device 2 by the bearing plates 10, and the elastic deformation of pneumatosis of the elastic element 1 and the sending device 2. Thus cylindricus the first slider 9 slides relative to the axial channel 8 and rotates on the hinge, through kinematic fixation plate and preventing an offset from the base plate 10. Occur when the system lateral load through the slider 9 and the pivot joint is transmitted to the support plate 10. The presence of horizontal platform 11 at the bottoms of the outer 3 and the inner 4 cups provides a level horizontal force characteristics, which helps to ensure the stability of the position of depreciable object under the action of horizontal disturbing force due to the dynamically unbalanced equipment placed on depreciable object, or other reasons. Rubber buffers 19 short travel depreciation additionally reduce loads acting in the horizontal plane.

Return depreciable object in its original position on the horizon is both due to the horizontal component of the longitudinal (axial) efforts cushioning device occurring when the slope of the reciprocal displacement of the centers of the radii R of the external 3 internal and 4 cups of the sending device 2, and at the expense, mainly, of the forces of the elastic deformation of pneumatosis of the elastic element 1, which tends to return the telescopic guiding device 2 to an upright position. The resulting moment of force is perceived C is strenuosity rollers 6 and 7 of the telescopic guide device 2 and the centering rollers 15 and 16 of the pneumatic shock absorbers of the elastic element 1.

Thus, the proposed damping device provides a more effective damping of depreciable object, the stability of the position of depreciable object from the horizontal disturbing force and is capable of self-healing depreciable object on the horizon with the required horizontal congestion, and provides regulation provedeniya characteristics under influence of any external forces variable frequency and amplitude.

1. Shock-absorbing device containing a telescopic guiding device installed between depreciable object and the substrate and is made in the form of oppositely directed outer and inner cups with established between rubber shell and centering elements, a base plate mounted on depreciable object and the base, an elastic element in the form of evenly spaced around the external Cup of pneumatic shock absorbers, comprising a housing, a plunger and a rubber membrane between them, the bottom of the outer and inner cups telescopic guide device has a convex disc shape with an axial channel, the annular space around the latter in contact with the corresponding support plate, and a corner radius greater than half the race the sustainability between the support plates, at the center in the longitudinal section of the guide device is located on a straight line, parallel to the longitudinal axis of the latter and passing through the transition line of the ring platform in the rounding, and the shock-absorbing device has placed in the respective axial channels and in contact with the cylindrical sliding bearings, pivotally connected by one end with the respective base plate, wherein the longitudinal axis of the pneumatic shock absorbers of the elastic element are arranged at an angle in the range of 40-70° to the longitudinal axis of guide device, casing pivotally mounted to its exterior glass at the location of the rubber-shell guide device, and the plungers are connected pivotally with the plates installed on the grounds of the protrusions of the base forming with the base, the angle being in the range of 110-150°, and between the housing and the plunger of the pneumatic shock absorbers are installed centering elements, characterized in that the end face of the inner glass telescopic guide device installed airtight partition with electromagnetic valve device, on the ends of the plungers of all pneumatic shock absorbers also have a sealed septum valve with electromagnetic devices, each valve of the second electromagnetic device is connected to a separate control system.

2. Shock-absorbing device according to claim 1, characterized in that each control system electromagnetic valve device has connected in series Converter of the moving object, the driver of the speed signal of the object, the control unit of the power key, the power key to connect the winding electromagnetic valve device to a power source.

3. Shock-absorbing device according to claim 1, characterized in that the displacement transducer of each system control electromagnetic valve device and the control system are located inside the corresponding pneumatic shock absorber or telescopic guide device.



 

Same patents:

FIELD: machine building.

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EFFECT: raised efficiency of shock absorber.

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FIELD: machine building.

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EFFECT: higher efficiency.

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FIELD: transport.

SUBSTANCE: invention relates to support vibration protection elements for lathe-size structures. Proposed shock absorber comprises cartridge 1 and punch 2 jointed together by elastic flexible element 3. Said joint is made up of rod 5 jointed to cartridge 1 by cable fastener 6. Correction device is arranged inside said hub 2 and consists of motor 7 fitted on rod 8 and provided with drum 8 with cable 5 coiled thereon, said drum being fitted on shaft 9. Cable tensioning device 10 is arranged inside hub 2 and consists of cylinder 11, spring 12 and cable retainer 13. Second end of cable 5 is secured in cable tensioning device 10 by means of retainer 13. Cable 5 is coiled on motor drum 8 and coupled with hub 1 via hub hole 14. Motor 7 is coupled with control unit 15.

EFFECT: higher efficiency.

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FIELD: transport.

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Air shock absorber // 2424125

FIELD: transport.

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FIELD: transport.

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EFFECT: higher efficiency of damping.

2 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to vibration protection components for large-dimensioned objects. Pneumatic shock-absorber contains ring (1), punch (2) interconnected by elastic resilient element (3) and rod (5) connected with the ring. Correcting device is fitted inside the punch (2) and consists of electric motor (6) located on the rod (5) and has gear wheel (8) on axis (7). The rod (5) goes through hole (13) of punch (2) cover (10). Gear rack (9) is fixed inside the punch (2) and is engaged with gear wheel (8) of electric motor (6). Upper end of gear rack (9) is installed on top cover (10) of punch (2) by means of attaching fitting (11). Lower end of gear rack (9) is fixed at the bottom of punch (2) using attaching fitting (12). Electric motor (6) is connected with control unit (14).

EFFECT: higher efficiency of damping.

2 cl, 4 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.

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

2 dwg

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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.

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

1 dwg

FIELD: machine building.

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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: mechanics.

SUBSTANCE: invention relates to machine building and is designed to absorb impact and vibration loads applied onto the base. The shock absorber incorporates an intermediate flexible-link weight arranged on the base and communicating with the damper representing a jet element with a cover and casing. The latter is furnished with tangential and axial channels, the latter communicating the aforesaid flexible link while the former communicates with the hydraulic-and-pneumatic accumulator.

EFFECT: higher damping efficiency.

4 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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