RU2702472C1 - Vibration-absorbing base - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to the machine building. Vibration-absorbing base represents a steel split housing consisting of upper and lower bases. Bases are made of plates of rectangular shape with side walls and fastening holes. Spring dampers located inside the housing consist of cylindrical springs. Upper and lower bases are installed relative to each other so that there is space between their side walls. In housing there are mats made of vibration damping material installed in horizontal and vertical directions. In horizontally installed mats there are process holes with spring dampers inside. Along the base height, including bases and horizontally arranged mats, through process holes are made. Fixing elements pass through spring dampers and are made with possibility of adjusting tightening level.

EFFECT: higher efficiency of protection of objects installed on it from vibration effects with high amplitude in horizontal and vertical planes.

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Description

The invention relates to mechanical engineering and is intended to protect software and hardware (PTS) of electronic equipment (CEA) from seismic, vibration and shock loads in the low-frequency and high-frequency ranges and equipment sensitive to vibrations of various nature.

Known cable seismic protection platform described in the patent of the Russian Federation No. 2167350 C1 class. F16F 7/14 of 05/20/2001, consisting of a rectangular frame and suspended inside it on the elastic damping cables of a rectangular platform for installing the object of protection. At the corners of the platform, racks are installed, by means of which the platform is suspended with the possibility of ensuring equal distances from its edges to the frame walls. Elastically damping cables are passed through the racks without slipping and touching the surface of the platform installed on top of the elasto-damping cables, the ends of which are passed through the bushings installed in the frame walls, and are fixed at the ends of the flat springs located outside along the frame walls. This seismic protection platform is designed to protect REA cabinets from low-frequency effects of large amplitude and is not designed to effectively protect products in the high-frequency range with different amplitudes.

The closest technical solution to the claimed one is Kochetov's vibration isolator mesh, described in RF patent No. 2548452 C1 class. F16F 3/10 of 04/20/2015, consisting of a base, an elastic mesh element and a washer interacting with the bushings. The base is made in the form of a plate with mounting holes. The mesh elastic element is fixed by the upper and lower washers. The bottom washer is rigidly connected to the base. The upper washer is connected to a centrally located ring, covered by a coaxially located ring, rigidly connected to the base. Between the pressure washer and the base there is an elastic element containing a spring with a built-in damper. The spring is cylindrical helical and consists of two parts with opposite ends. The first part of the spring has coils of rectangular cross section with rounded edges, and the second part is hollow. The counter-directed end of the first part is placed in the cavity of the second. The gaps of the segment profile of the contacting parts of the spring are filled with antifriction grease. A sealing collar is installed at the end of the second part of the spring to prevent lubricant leakage. The first part of the coil spring is covered by a tube of damping material.

The disadvantage of this device is the restriction on the mass of the installed object, the use of lubricants thereby necessitating control of the lubricant and the need to replace it, the device also does not provide protection against vibration with large amplitudes in the horizontal plane.

The technical result of the proposed vibration damping base is to increase the efficiency of protection of the objects installed on it from vibration effects with large amplitude in horizontal and vertical planes.

The technical result is achieved in that in a vibration damping base including a steel detachable housing, consisting of upper and lower bases in the form of rectangular steel plates with side walls and mounting holes connected by fasteners, spring dampers located inside the housing, consisting of coil springs, enclosed in metal flanges, the upper and lower bases are mounted relative to each other so that there is a space between their side walls and a gap between kovymi opposing walls and bases. Vibration damping mats are installed in the body, installed in horizontal and vertical directions. Vertically installed mats filled the space between the side walls, and horizontally installed mats filled the space between the upper and lower bases. In horizontally mounted mats there are technological holes in which spring dampers are installed. Through the height of the base, including the base and horizontally placed mats, through technological holes are made. Fasteners pass through spring dampers and are configured to adjust the level of tightening.

In addition, we used a combination of mats with different physical properties, cut out in a certain shape and installed with the possibility of replacement depending on the mass of the object installed on the base, as well as spring dampers in an amount of at least eight pieces located in pairs in the corners of the base.

The proposed vibration damping base is illustrated by the following figures.

The figure 1 presents a General view of the vibration-absorbing cap.

In figure 2, a drawing of a vibration damping cap.

In figures 1 and 2, the numbers indicate:

1 - upper base;

2 - lower base;

3 - side walls of the bases;

4 - mounting holes;

5 - mounting holes;

6 - technological holes;

7 - mats made of vibration damping material located horizontally;

8 - spring damper;

9 - a cylindrical spring;

10 - a metal cup;

11 - mats of vibration-absorbing material located vertically;

12 - screw;

13 - washer;

14 - washer grover;

15 - nut.

The vibration damping base includes a steel detachable housing consisting of an upper base 1 and a lower base 2 in the form of rectangular steel plates with side walls 3, with fixing holes 4 for fastening to embedded floor elements, with mounting holes 5 for connecting the structure and technological holes 6 for summing the cable to the equipment installed on the vibration damping base.

In the space between the upper and lower bases, mats of vibration-damping material, for example Sylomer, 7 cut into a specific shape with technological holes 6, are placed 6. Spring damper 8 is inserted into the holes in the mats of vibration-damping material 8. The spring damper 8 consists of a coil spring 9 with and polished end coils, from the ends metal flanges 10 are put on the spring 10. Mats of vibration-absorbing material 11 are vertically installed in the space between the side walls, after which the upper base is mounted 1. Depending on the mass of the object, a combination of mats with different physical properties is selected. Screws 12 are inserted into the mounting holes 5 of the lower base 2, which pass through the spring dampers 8 and are fixed on the upper base 1 using washers 13, washers of the grover 14, nuts 15.

The work of the proposed device for vibration damping is considered on the example of a prototype using mats of Sylomer material.

Cabinets with electronic equipment for protection against vibration are installed on a vibration damping base. Horizontal trimming with the base is carried out by Sylomer mats installed vertically between the walls of the bases. In the vertical direction, vibration damping is carried out due to the mats of the Sylomer material, cut out in a certain shape, and the horizontally located mats fill the space between the upper and lower bases. Depending on the frequency of vibration effects, as well as the mass of the object of vibration damping, a combination of various types of mats of Sylomer material with different physical properties (ultimate static load, dynamic shear modulus, dynamic elastic modulus) is used to ensure damping quality. Spring dampers, in an amount of at least 8 pieces, installed in pairs in the corners of the base into the technological holes in horizontally located mats, provide the ability to fine-tune the vibration-absorbing base depending on the frequency range of external influencing factors. By compressing the springs with fasteners passing through the spring damper and fixed on the lower and upper bases, a prestressed state is created in the mats of Sylomer material. This ensures controlled nonlinear damping.

The use of mats from vibration material Sylomer in the base and their arrangement in different directions, as well as the possibility of combining mats with different physical properties and their replacement depending on the mass of the object installed on the base, increasing the number of dampers and changing their design, fixing dampers between metal bases in holes in vibration damping mats, provide the specified technical result.

Claims (3)

1. Vibration damping base, comprising a steel detachable housing, consisting of upper and lower bases in the form of rectangular steel plates with side walls and mounting holes connected by fasteners, spring dampers located inside the housing, consisting of coil springs enclosed in metal flanges, characterized in that the upper and lower bases are installed relative to each other so that there is a space between their side walls and a gap between the side walls and other with opposite bases, vibration-damping material mats are inserted in the horizontal and vertical directions, with vertically installed mats filling the space between the side walls and horizontally installed mats filling the space between the upper and lower bases, in addition, there are technological holes in the horizontally installed mats in which spring dampers are installed, in addition, along the height of the base, including the bases and horizontally located mats, through technological holes are filled, and fasteners pass through spring dampers and are made with the possibility of regulating the level of tightening. 2. The vibration damping base according to claim 1, characterized in that a combination of mats with different physical properties is used, cut out in a certain shape and installed with the possibility of replacement depending on the mass of the object installed on the base. 3. Vibration suppression base according to claim 1, characterized in that the spring dampers in an amount of at least eight pieces are arranged in pairs at the corners of the base.

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