RU2479765C1 - Vibration-isolating device - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: vibration-isolating device includes an elastic damping element from a continuous steel rope with formation of loops and additional damping, elastic and elastic-damping elements. Upper and lower support elements are made in the form of flat straight T-section plates. Loop retaining devices are made in the form of two pairs of pressure plates of rectangular section. Pressure plates are located to the right and to the left from posts of upper and lower support T-members with corresponding fastening elements in holes of pairs.

EFFECT: reduction of width and increase of load-carrying capacity of a vibration-isolating device.

5 cl, 20 dwg

Description

The invention relates to means for protecting equipment in any field from vibration, shock, shock and noise, especially large heavy objects (reciprocating internal combustion engines, gas turbines, jet engines, compressors, pumps, pipelines, electric motors, etc.) with limited the width of the size of the bracket (paw, frame, shelf, eye) for placement and fastening of the vibration-isolating device.

Known vibration isolation device (patent for a utility model of the Russian Federation No. 55061, F16F 7/14, publ. 07/27/2006. Bull. No. 21 [1]), containing an elastic damping element from a continuous steel rope with the formation of loops, round supporting elements, loop-holding means, additional damping, elastic and elastic damping elements. Significant disadvantages of the vibration-isolating device are the insufficiently high bearing capacity and limited possibilities of its increase at constant sizes and without disassembling the device with the main rope elastic element.

Also known is a vibration isolation device (RF patent No. 2341704, F16F 7/14, publ. 12/20/2008. Bull. No. 35 [2] prototype), which differs from [1] in that a central hole is made in one of the supporting elements diameter sufficient to install or replace an additional elastic element. Significant disadvantages of the vibration-isolating device are the insufficiently high bearing capacity, the limited possibility of its change at constant sizes without disassembling the device with the main rope elastic element.

The technical results of this invention are:

1. The minimum width of the vibration isolation device;

2. The big bearing ability;

3. A wide possibility of changing the bearing capacity at constant sizes without disassembling the device with the main rope elastic element.

These features are achieved by the fact that:

1. The vibration-isolating device is made in the form of a transversely deformed tubular bar.

2. Supporting elements are made in the form of flat straight plates of the T-profile.

3. The loop-holding means are made in the form of two - left and right pairs of straight pressure plates of a rectangular profile, located to the right and left of the racks of the upper and lower T-shaped support elements with the corresponding fasteners in the pre-made holes of the pairs: "left and right upper pressure plates", "Left and right lower pressure plates."

4. Additional elastic elements are made of single or several concentric springs with a parallel arrangement inside the length of the vibration isolation device between the upper and lower supporting elements.

5. An additional elastic element is made in the form of a removable-replaceable pneumatic rubber-cord vibration isolator with a sheath in the form of a straight bar with semicircular side surfaces and is placed between the upper and lower supporting elements.

6. An additional elastic-damping element is made in the form of rubber vulcanized to the supporting elements, or a metal-fiber element (metal rubber [MP]), or a composite material.

7. The end parts of the device are made open for installation and replacement of additional elastic or elasto-damping elements.

8. The ability to use the free space between the object and the base (foundation, frame, body, etc.) in length with a limited size in width due to the layout of the vibration isolation device in the form of a transversely damped tubular beam.

The technical solution is illustrated by drawings, in which Fig. 1 shows a side view of a vibration-isolating device with only the main elastic-damping rope element on the side, in Fig. 2 is a top view, in Fig. 3 is an end view; figure 4 - with an additional elastically damping element, figure 5, 6 - end views; 7, 8, 9 - an additional elastic-damping element vulcanized with pressure plates (side, top and side views); figure 10-14 - vibration isolation device with additional elastic elements - springs (side views and from the ends); on Fig, 16 - a device with an additional rubber-cord vibration isolator with a shell in the form of a straight beam with semicircular side surfaces; on Fig is a view of a vibration-isolating device with a vulcanized main elastic damping rope element; in Fig.18 - the same with an additional rubber-cord vibration isolator; in Fig.19 is a prototype of a vibration isolating device with a main elastically damping rope element, Fig.20 is a prototype of a vibration isolating device with an additional elastic element from springs.

Figure 1-18 marked: 1 - the main elastic damping rope element; 2, 3 - supporting elements; 4, 5 - clamping elements - plates; 6, 7 - fasteners; 8 - additional elastic damping element (rubber, metal rubber, composite material); 9, 10, 11 - additional elastic elements from springs; 12, 13 - plates of springs; 14 - pneumatic rubber-cord vibration isolator with a sheath 14 in the form of a straight beam with semicircular side surfaces; 15 - gas (air); 16 - rubber shell of the main elastically damping rope element.

The vibration-isolating device comprises a main elastic-damping element 1 from a continuous steel rope with the formation of loops, upper 2 and lower 3 supporting elements, loop-holding means in the form of clamping 4, 5 and fasteners, additional elastic-damping element 8, elastic elements 9, 10, 11, additional pneumatic a rubber-cord vibration isolator 14 in the form of a straight beam with semicircular side surfaces.

Vibration isolation device operates as follows. During the operation of a shock-absorbing object (marine diesel engine, automobile engine, gas turbine, jet engine, etc.), as well as in the event of accidental shocks, shocks both from the foundation side (base, frame, body, bracket, etc.), and from the side of the object, both the absorption of vibrational energy from the legs of the shock-absorbing object and the damping of vibrations can be provided by a vibration isolating device only with the main elastic-damping rope element 1 shown in Figs. 1 and 19. The damping of vibrations due to friction between the steel cores of rope 1, i.e. scattering of vibrational energy in the directions of three mutually perpendicular axes.

For heavy equipment, vibration isolation devices shown in Figs. 4-18, 20 can be used, and for direct adjustment of load characteristics - Figs. 15, 16, 18 by changing the air pressure 15 (Figs. 15, 16, 18).

The presented design features, layout diagrams and operation of the device provide an extension of the scope of the support and the creation of a whole family of supports with a wide range of nominal loads with a minimum width.

The performance of the vibration isolating device is confirmed by the creation of two prototypes shown in Fig.19, 20.

An analysis of well-known technical solutions in this field and in related industries shows that such designs of vibration-isolating devices with the indicated features, advantages and distinguishing features are not available.

Information sources

1. Patent for utility model of the Russian Federation No. 55061 “Vibration isolation device”. Published: July 27, 2006. Bull. No. 21. Authors: Minasyan M.A., Minasyan A.M. (analogue).

2. Patent for the invention of the Russian Federation No. 2341704 "Vibration isolation device". Published: December 20, 2008. Bull. Number 35. Authors: Minasyan A.M., Minasyan M.A. (prototype).

Claims (5)

1. A vibration-isolating device comprising an elastic damping element from a continuous steel rope with the formation of loops, upper and lower support elements, loop-holding means in the form of clamping and fastening elements, additional damping, elastic and elastic-damping elements, characterized in that the vibration-isolating device is made in the form of a transversely deformed tubular timber, upper and lower supporting elements are made in the form of flat straight plates of the T-profile, loop-holding means are made s in the form of two - left and right pairs - straight pressure plates of a rectangular profile located to the right and left of the uprights of the upper and lower T-shaped support elements with the corresponding fasteners in the holes of the pairs: "left and right pressure plates of the upper support element" and "left and right pressure plates of the lower support element. " 2. The device according to claim 1, characterized in that the additional elastic damping element is made in the form of rubber vulcanized to the upper and lower supporting elements, or a metal-fiber element (metal rubber) or composite material. 3. The device according to claim 1, characterized in that the additional elastic element is made of single or several concentric springs with a parallel arrangement inside the length of the vibration isolation device between the upper and lower supporting elements. 4. The device according to claim 2, characterized in that the elastic-damping rope element is vulcanized with an additional elastic-damping element - rubber, allowing the placement of another additional elastic element - removable pneumatic rubber-cord vibration isolator with a shell in the form of a bar. 5. The device according to claim 3, characterized in that the additional elastic element is made in the form of a removable pneumatic rubber-cord vibration isolator with a sheath in the form of a straight bar with semicircular side surfaces and is placed between the upper and lower supporting elements.

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