RU2185544C2 - Internal combustion engine vibration isolator - Google Patents

Abstract

FIELD: mechanical engineering; vibration isolators for engine and other machines and sets. SUBSTANCE: vibration isolator has flexible member made of curved sections (length) of steel wire ropes, and support plates with means for laying, bracing and fastening of wire rope ends on support plates. Curved lengths of wire rope are laid lengthwise the strips in cross plane in tight contact, and their curvature is pointed either outwards, with each coil of wire rope length laid to circumference, or to ellipse, or inwards with each coil of wire rope length being laid to hyperbola or parabola. EFFECT: improved protection. 7 dwg

Description

 The invention relates to mechanical engineering, in particular to engine building, and more particularly to the improvement of vibration-isolating supports of internal combustion engines (ICE), and can be used to reduce noise and vibration of diesel engines and other mechanisms of ship and stationary power plants and can also be used for a wide variety of objects, e.g. couplings, piping, etc.

 Known vibration-isolating support, which consists of support plates, an elastic element of the segments (pieces) of a steel cable. The lower support consists of a base plate-plate and two pairs of slats located longitudinally along the edges of the plate-plate.

 The cable segments of the elastic element have a parabolic (horseshoe) shape, the ends of which are fixed to the strips of the lower support, and the middle part passes through the upper pair of support strips.

 In this case, part (one half) of the parabolic-shaped segments of the cable of the elastic element is fixed with a slope at a certain angle from left to right to the center relative to the vertical axis of the vibration isolator, and the other part (second half) is from right to left to the center, i.e. opposite to the first part (1).

 Significant disadvantages of such a vibration-insulating support are large overall dimensions and low energy consumption due to the low density of the elastic element in space, i.e. the presence of the maximum unused (parasitic) volume (space) between the support elements.

 The closest in technical essence and the achieved result vibration-isolating support of the internal combustion engine containing an elastic element from curved segments of a steel cable and support plates with means of laying, screed and fastening in them of cable segments located in the transverse plane from opposite sides along the length of the plates (2) .

 A disadvantage of the known supports are large dimensions and low power consumption.

 The technical result of this support is to reduce the size, especially along the length of the support and increase energy intensity.

 This technical result is achieved by the fact that in a known vibration-isolating support containing an elastic element of curved segments of a steel cable and support plates with means for laying, screed and fastening cable segments therein located in the transverse plane from opposite sides along the length of the plates, the curved cable segments are laid close, and their curvature is turned either outward and each of the turns of the cable segments is laid around a circle or ellipse, or inward and each of the turns of cable segments is laid along a hyperbola or parab le.

 In FIG. 1 shows a vibration-isolating support, the elastic element of which with the supporting plates has the form of an elliptical cylinder, and the ends of the cable segments are secured to the supporting plates, for example, with screws, and section AA.

 In FIG. 2 also shows an elliptical-cylindrical vibration-isolating support, but with a means of attaching the ends of the cable segments, for example by casting, welding, crimping, etc., and a section B-B.

 In FIG. 3 shows a vibration-isolating support, the elastic element of which with support plates has the form of a hyperbolic or parabolic cylinder, and a section BB.

 Figure 4 shows the fastening of the ends of the cable segments using the U-shaped clamping plates.

 The vibration-isolating support comprises an elastic element 1 of curved segments 2 of a steel cable, support plates 3.4 and means of insertion, ties and fastening of the ends of the cable segments to the support plates. Line segments 2 are located in the transverse plane from opposite sides along the length of the support plates. The curved segments 2 of the cable are laid closely, and their curvature is turned either outward and each of the turns of the cable segments is laid in a circle or ellipse (Fig. 1, 2) or inward and each of the turns of cable pieces is laid in a hyperbola or parabola (Fig. 3, 4).

 Means of laying, screeding and fastening the ends (segments) of the cable to the support plates 3.4 can serve, for example, pressure plates 5.6 with screws 7 (Fig. 1.3 option P) or U-shaped plates 8 (Fig. 4) option W, crimping (clamping, pinching) welding (Fig.2.3 option I).

 The support plates 3.4 with the pressure plates 5.6 paired together form a “key connection” as shown in FIG. 1. The middle part of the plates is designed to accommodate screws 7, and a pair of “shoulder” B, “slot” C provides reliable fastening of the ends of the cable segments 2.

 However, pairs 3,5 and 4,6 can be made with smooth surfaces.

 The ends of the cable segments (Fig. 1) are placed between the support 3.4 and the pressure 5.6 of the support plate, for example, in the oppositely semicircular grooves D and E of the respective plates.

 However, the fastening of the elastic element to the supporting plates 3,4 can also be carried out by casting (Fig. 2), by welding (Fig. 2,3 option I), by crimping (Fig. 2,3 option I), etc.

 Holes 9.10 on the base plates 3.4 are designed for fastening with fasteners, respectively, to the engine and to the foundation.

 Vibration isolating support works as follows.

 Oscillatory energy from the engine mount is transmitted through the base plate 4 to the elastic element 1. Due to friction between the steel cores of the cable segments 2, as well as arched adjacent sections, the vibrational energy is dissipated and the transmission of disturbing forces to the foundation is significantly reduced.

 Thus, the advantages of this vibration-isolating support are those that the elastic element has a large property of dispersing vibrational energy, significantly reducing the transmission of disturbing forces to the foundation, has minimal dimensions and high energy intensity.

Claims (1)

 A vibration-isolating support of an internal combustion engine, comprising an elastic element of curved segments of a steel cable and support plates with means for laying, couplers and fastening cable segments therein located in a transverse plane from opposite sides along the length of the support plates, characterized in that the curved cable segments are laid closely and their curvature is turned either outward and each of the turns of the cable segments is laid in a circle, or in an ellipse, or inward and each of the turns of cable segments is laid in a hyperbola or parabo le

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