Vibration-isolating device

FIELD: engineering industry.

SUBSTANCE: device consists of the internal and external tubular profiles connected in the upper part with plug, executed in the form of the sleeve. Vibration isolator is executed in the form of a twisted spring with a flange. Viscoelastic envelope is set in a clearance between tubular profiles and connected mainly by method of hot vulcanization to the sleeve, spring and flange. Spring is connected fixed to the sleeve and flange by means of the screw grooves executed on them and fixed in junctions with them by fixing elements which are connected mainly by a method of hot vulcanization to a viscoelastic envelope.

EFFECT: development of operation possibilities; support of adaptability to manufacture of a product.

1 dwg

 

The invention relates to mechanical engineering and can be used to reduce vibrations propagating in structures from on revealing equipment to the Foundation.

Known ship pillars containing vertical inner and outer tubular profiles, the gap between them is closed by a plug at its top, hard knize, the vibration absorber placed between the inner and outer tubular profiles, and the outer tubular profile is attached at its bottom to one of the ship's beams, and provided with a stub inner tubular profile made in the form of insulator, connecting the lower ends of the inner and outer tubular sections and cover a gap between the tubular profile made of viscoelastic material and attached to the outer tubular profile, with the inner tubular profile with the vibration absorber and attached at its upper part to upstream relative to the specified ship to overlap (inventor's certificate SU # 1643311, WV 3/52, publ. 23.04.1991 year).

The disadvantage of this ship pillars is that it reduces vibration up to 10-25 dB only in the mid range and low frequencies from 6 to 1000 Hz and completely ineffective at high frequencies.

Load characteristic of this ship pillars (C the dependence of precipitation on the force) is linear, which affects its efficiency under the action of shock loads.

Closest to the declared vibration-insulating device is picked-up the Foundation of pillars containing inner and outer tubular profiles, connected in its upper part with a plug made of a viscoelastic material, made in the form of bushings, vibration absorber, made in the form of a spiral spring with a flange, and a viscoelastic membrane, installed in the gap between the tubular profiles and connected mainly by hot vulcanization with the sleeve, a spring and a flange (patent RU №2079419, WV 3/52, F16F 5/00, F16F 9/00, publ. 20.05.1997 year).

The disadvantage of this device is that it allows only vertical load ratio, and under the action of tensile loads, shear and bending or their combinations possible separation of the spring from the flange and sleeve that by limiting the scope of its application, adversely affects its functionality.

In addition, the disadvantage is that the design of this device does not allow for a given sequence to produce with the least amount of labor and materials, not ensuring the manufacturability of such devices. Because a given height such devices is determined mainly by the height of the spiral spring, when making tacos what about the device requires the high accuracy of manufacture for each manufactured device or requires adjustment of its size under specified dimensions of the device during Assembly, which in turn leads to the cost of labor and materials and therefore has a negative impact on ensuring the manufacturability of such devices.

The basis of the invention is consisting in the development of vibration-insulating device, characterized by a reliable combination of its parts and elements, providing the perception of loads of different types (tension, compression, shear, bending, and their combination) and design which would allow for a given sequence to produce with the least amount of labor and materials, which will enhance its operational capabilities and to ensure its manufacturability.

Achieving the above technical result is ensured by the fact that the vibration-insulating device containing the inner and outer tubular profiles, United in its top with a cover, made in the form of bushings, vibration absorber, made in the form of a spiral spring with a flange, and a viscoelastic membrane, installed in the gap between the tubular profiles and connected mainly by hot vulcanization with the sleeve, a spring and a flange, the spring narashima connected with the bushing and flange through made them screw grooves and secured at the joints with them locking elements, the latter connection is tive mainly by hot vulcanization with viscoelastic shell.

Due to the permanent connection of the spring with bushing and flange through made them screw grooves, and the fixing of the joints with them locking elements, and the connection of the clamping elements mainly by hot vulcanization with viscoelastic shell ensures a reliable connection of the spring with the sleeve and the flange and the perception of the vibration-insulating device of any type and combination of loads, which allows you to expand its operational capabilities.

Such connection of the spring with the sleeve and the flange provides not only a reliable connection of these parts, but also allows for a given sequence to produce the vibration-insulating device with a minimum expenditure of labor and materials, which ensures manufacturability of such devices. Due to the connection of the spring with bushing and flange through made them screw grooves and securing the joints with them locking elements is provided by the lower costs of labor and materials in the manufacture of such devices, convenience and minimal complexity in the process of its Assembly.

The invention is illustrated in the drawing, which shows the vibration-insulating device, a longitudinal section.

The vibration-insulating device has made of rubber internal 1 and external the first 2 conical or cylindrical tubular profiles, United in its upper part with a sleeve 3, a vibration absorber made in the form of a twisted conical or cylindrical (tubular respectively the profiles 1, 2) spring 4 with the flange 5, and a viscoelastic shell 6, is installed in the gap between the tubular sections 1, 2 and connected mainly by hot vulcanization with the sleeve 3, a spring 4 and the flange 5. The upper and lower parts of the spring 4 can be made cylindrical, and the average (working) part - conical. The spring 4 is connected with the sleeve 3 and the flange 5 by means executed them screw grooves 7, 8 and secured at the joints with them locking elements 9, 10, made for example in the form of an annular elements. The locking elements 9, 10 are connected mainly by hot vulcanization with viscoelastic shell 6. The locking element 9 can have slots to hold the wrench when connecting the vibration-insulating device hardware.

The vibration-insulating device operates as follows.

Loading (tension, compression, shear, bending, or a combination thereof) acts through the sleeve 3 and the flange 5 on the tubular profiles 1, 2, the spring 4 and the viscoelastic shell 6, which are interconnected by means of hot vulcanization to form rubber-metal shell, reinforced by a spring 4.

The load of the mouth of austo deformed, the coils of the conical spring 4 due to the different diameters have different stiffness, so okazivautsya different: first of all deformed bottom round, then the next height, etc.

Due to the specified property of the spring 4 load characteristics of the device (the dependence of precipitation on the force) is nonlinear, which positively affects the effect of shock loads, which effectively extinguished by the device.

Under the action of load coils of the spring 4 are twisted, resulting in large shear deformations in the rubber layers of the shell 6 and profiles 1 and 2 by vulcanization strongly connected with the coils of the spring 4.

When exposed to vibrations or shock loads specified deformation increase, being circular, which greatly enhances vibraphone device, providing reduction of the vibration level in the frequency range up to 100 Hz on average 15 dB in the frequency range from 100 to 10000 Hz from 20 to 40 dB.

The coils of the upper part of the spring 4 is fixed in the spiral groove 7 of the sleeve 3 with the locking ring 9 and turns the lower part of the spring 4 is fixed in the screw groove 8 of the flange 5 with the locking ring 10. This ensures a reliable connection of the spring 4 with the specified elements when exposed to any type of load.

In addition, it should be noted that PR is such a connection of the spring 4 with the sleeve 3 and the flange 5 in the case of a possible failure of the viscoelastic shell 6 of the vibration-insulating device provides reliable fastening equipment to the Foundation.

Such connection of the spring 4 with the sleeve 3 and the flange 5 not only provides a reliable connection of these parts and elements, but also allows for a given sequence to produce the vibration-insulating device with a minimum expenditure of labor and materials. Due to the helical grooves 7, 8, is made on the sleeve 3 and the flange 5, and the fixing spring 4 in place of its connection with the sleeve 3 and the flange 5 with the locking elements 9, 10, made in the form of annular elements, provides convenience and minimal complexity in the Assembly process. The specified height of the vibration-insulating device is ensured by the possibility of twisting of the spring 4 in the helical grooves 7 and 8, respectively, of the sleeve 3 and the flange 5 a larger or smaller size, and this allows for a given sequence of its production to produce a vibration-insulating device of a given size. The locking elements 9, 10 due to the inner diameter of the locking element 9, the outer diameter of the locking element 10 and height compensate for the dimensional tolerances of the sleeve 3, the spring 4 and the flange 5. In connection with the manufacture of the vibration-insulating device for a given sequence of its production does not require high precision manufacturing of these parts and easier Assembly, which has a positive impact on ensuring the manufacturability of such devices is Ista.

Thus, thanks to this construction, the vibration-insulating device is provided by the perception of the static (dynamic) loads in tension, compression, shear, bending, or a combination thereof, the lower costs of labor and materials in its manufacture, convenience and minimal complexity in the process of its Assembly, which allows you to expand its capabilities and to ensure its manufacturability.

The vibration-insulating device containing the inner and outer tubular profiles, United in its top with a cover, made in the form of bushings, vibration absorber, made in the form of a spiral spring with a flange, and a viscoelastic membrane, installed in the gap between the tubular profiles and connected mainly by hot vulcanization with the sleeve, a spring and a flange, wherein the spring narashima connected with the bushing and flange through made them screw grooves and secured at the joints with them locking elements, the latter are connected mainly by hot vulcanization with viscoelastic shell.



 

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2 dwg

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2 dwg

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