Hydraulic vibration insulation support

FIELD: mechanical engineering.

SUBSTANCE: hydraulic vibration insulation support comprises flexible pressure-tight chamber which is filled with damping fluid and separated into spaces interconnected through throttling ports. The pressure-tight chamber is made of a central disk-shaped space provided with an area for setting an object to be insulated and peripheral ring spaces oriented concentrically with respect to the central space and connected with it through the radial passage from one side of the central space. The throttling ports are made in pair from the opposite sides of the radial passage at the site of its intersection with each ring space. The throttling ports are provided with valves which allow the fluid to flow in opposite directions from the side of the radial passage for each of the pair of the throttling ports.

EFFECT: simplified manufacturing, reduced cost and enhanced reliability.

2 dwg

 

The invention relates to the isolation of objects and hide their parasitic oscillations in mechanical engineering, instrument-making, machine-tool construction, etc.

Known hydraulic dampers containing elastic airtight chamber filled with damping fluid and separated by a movable corrugated membrane into two main cavity and mounted on the membrane of the hollow core, separated by an elastic partition into two auxiliary cavity, and the main and auxiliary cavities are communicated with each other via a special way oriented and have specific and different cross-sectional area of throttling holes made in the corrugated membrane and elastic septum (see, for example, as the USSR №1654617, CL F 16 F 13/00, 1989 [1]; A.S. USSR №1744325, CL F 16 F 13/00, 1990 [2]).

The disadvantages of the known devices are a significant design complexity, ultimately limiting the scope, and most importantly - low efficiency of damping due to the low intensity of forced circulation of the damping liquid in communicating cavities, limited length traversed by fluid parcels in real size dampers. In addition, due to the direct connection vibroisolating object via the fastening elements and the hollow core with a corrugated membrane dramatically snijaetsa reliability of the known device. Due to this connection the main namebrands cavity when the vibrations of the object practically does not change that dramatically reduces the circulation of fluid between the cavities and, consequently, the efficiency of damping.

The closest device to the same destination to the claimed invention on the totality of symptoms is the hydraulic isolation pad containing elastic airtight chamber with fastening elements for connection with vibroisolating object filled with damping fluid and divided into two cavities corrugated elastic membrane with the design configuration of the corrugations and throttling holes on the periphery for a message cavities between them (see A.S. USSR №1744324, CL F 16 F 13/00, 1989 [3]), adopted for the prototype.

The drawbacks of the prototype are significant design complexity, and most importantly - low efficiency of damping due to the low intensity of forced circulation of the damping fluid in two communicating cavities when the perturbations of vibroisolating object and a limited amount of passable fluid parcels, when its circulation between the cavities for the real size dampers. In addition, a direct relationship vibroisolating object via the fastening element with an elastic membrane dramatically reduces the reliability of the known is trojstva. This rigid connection to each other through the fixing upper cover of the camera and the elastic membrane leads to the fact that the volume of the upper namebrands of the camera when the vibrations of the object remains virtually unchanged due to this dramatically reduces circulation of the fluid between the cavities and, consequently, the efficiency of damping.

The invention consists in that in the device when the oscillation vibroisolating object is artificially the process of continuous forced unidirectional circulation of the damping fluid through the peripheral annular cavities, due to which there is effective damping of the object.

Technical result - increase the effectiveness of the damping due to the sharp increase in the intensity of the circulation of the damping fluid, and increasing the reliability of the device.

This technical result in the implementation of the invention is achieved in that in the known hydraulic isolation pad containing elastic airtight chamber filled with damping fluid and divided into cavities, interconnected through a throttling orifice, according to the invention the chamber is in the form of a Central cavity in the form of a disc with end space for installation vibroisolating object and an annular peripheral Polo is TEI, oriented concentric with the Central cavity and connected to it through the radial channel on one side of the Central cavity throttling holes formed in pairs with opposite sides of the channel at the point of intersection with each ring cavity, thus throttling holes equipped with valves with opposite direction of transmission fluid from the channel for each of the above pairs of throttling holes.

The essence is illustrated by drawings, where figure 1 schematically illustrates the hydraulic isolation pad, top view; figure 2 is a section along a-a in figure 1.

Hydraulic isolation pad contains elastic airtight chamber filled with damping fluid 1 and is divided into cavities, interconnected through a throttling orifice, the camera is made in the form of a Central cavity 2 in the form of a disc with a face area in the top 3 for installation vibroisolating object and an annular peripheral cavities 4, oriented concentric with the Central cavity 2 and connected to it through the radial channel 5 on one side of the Central cavity 2 throttling holes 6 made in pairs with opposite sides of the channel 5 at the point of intersection with each annular cavity 4, and a throttling holes 6 SN is beeny valves with opposite directions of transmission fluid 1 from channel 5 for each of the above pairs of throttling holes 6. The annular cavity 4 is composed of a base (round plate) 7, attached to the base 7 on the periphery of the Cup 8 with a Central hole in the bottom, and concentric rings 9, is fixed between the base 7 and the bottom of the Cup 8. The Central cavity 2 is made in the form of elastic glass, inserted in a hole in the bottom of the Cup 8, attached at the periphery to the base 7 and having at the bottom of the platform 3 installation and mounting vibroisolating object. Radial channel 5 made in the form of a rigid tube 10 with the axis perpendicular to the axis of the Cup 2, is rigidly embedded in the side surface of the Cup 2, crossing all annular cavity 4 and having a diameter equal to the height of annular cavities 4.

As mentioned above, in the walls of tube 10 is made throttling holes 6, provided with a valve in the form of balls 11, attached to the tube 10 through the elastic membrane 12 with holes to allow the damping fluid 1, and valves with the direction of transmission fluid 1 from the channel 5 into the cavity 4 balls 11 with the membrane 12 is fixed on the outside of the tube 10, as in the valves with the direction of transmission fluid 1 from the cavity 4 in the channel 5 balls 11 with the membrane 12 is fixed inside the tube 10.

The operation of the device is as follows. When driving vibroisolating object during its parasitic oscillations listing is built on the top end area 3 of the elastic Central cavity 2, for example, down, elastic glass 2, forming a Central cavity, deformed, damping fluid 1 under pressure flows into the radial channel 5 and enters the annular cavity 4 through the throttling holes on the side of the cavity 4, with which these holes are open the gates 11, 12 for intake of the fluid 1, after which the fluid 1 under pressure moves through the cavities 4. In the second half of the parasitic oscillations of the object, the object goes up, the pressure of the fluid 1 in the cavity 2 and respectively in radial channels 4 drops liquid included in the channel 4 tries to get out of them. However, to go back through those gates through which she came, the fluid can't. However, since by reducing the fluid pressure in the passage 5 is opened all the gates at the outputs of the cavities 4, in which the liquid entered (recall that the valves on the inlet and outlet of each cavity 4 is made with opposite directions of transmission fluid), the fluid in each of the cavities 4 makes a complete circular turn and again enters into the channel 5. Next, the liquid in the channel 5 again compressed and the process repeats. So here when the oscillations of the object together with the elastic chamber is forced continuous circulation of fluid through all of the peripheral annular channels in different directions defined by the directions about what Askania valves. This allows even at relatively small sizes of the isolation pad repeatedly to increase the intensity of the movement of the damping fluid and the duration it passable track sections, including throttling holes, and thereby improve the efficiency of the damping of spurious oscillations of the object.

The implementation of the dampers in the form of a separate stand-alone module without any access to the object through the elements of its fastening to the inner elastic elements of design with the installation of the object only on the outer surface of a support can significantly improve the reliability of the proposed design dampers. The bearing design is relatively simple, both in manufacture and in Assembly, does not require special and complex assemblies.

The design can be made as fully collapsible into separate elements (such an option is offered), and by injection molding the entire site with the annular chambers etc.

Hydraulic isolation pad containing elastic airtight chamber filled with damping fluid and divided into cavities, interconnected through a throttling orifice, wherein the sealed chamber is in the form of a Central cavity in the form of a disc with end space for installation vibroisolating object and the ring lane is farinah cavities, oriented concentric with the Central cavity and connected to it through the radial channel on one side of the Central cavity throttling holes formed in pairs with opposite radial sides of the channel at the point of intersection with each ring cavity, thus throttling holes equipped with valves with opposite direction of transmission fluid from the radial channel for each of the above pairs of throttling holes.



 

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SUBSTANCE: hydraulic vibration insulation support comprises flexible pressure-tight chamber which is filled with damping fluid and separated into spaces interconnected through throttling ports. The pressure-tight chamber is made of a central disk-shaped space provided with an area for setting an object to be insulated and peripheral ring spaces oriented concentrically with respect to the central space and connected with it through the radial passage from one side of the central space. The throttling ports are made in pair from the opposite sides of the radial passage at the site of its intersection with each ring space. The throttling ports are provided with valves which allow the fluid to flow in opposite directions from the side of the radial passage for each of the pair of the throttling ports.

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