RU2345907C1 - Laminated spring support - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: laminated spring support contains pair of laminated spring packets that are directed opposite to each other on floating and fixed support elements with certain gap for coned part of fixed support element. Each pair of packets is secured individually by fastening elements to floating support.

EFFECT: securing even rigidity during spring support work part deformation and increase of reliability of laminated spring support fastening.

4 dwg

Description

The invention relates to means for protecting objects from vibration and can be used in any field of technology.

Known leaf spring support, described in the book "Automobile: Design Basics: A textbook for universities in the specialty" Automobiles and Automotive Economy ". / N.N. Vishnyakov, V.K. Vakhlamov, A.N. Narbut, etc. - M. : Mechanical Engineering. 1986 - 304 p. (Fig. 219 p. 275) [1].

The leaf spring support described in the indicated source contains a package of leaf springs forming a spring, spatial fixation means in the form of a through hole in the root part of the spring with a corresponding pin and fixing leaf springs from moving or turning along the transverse plane of the support, attachment points of the leaf spring package and the attachment points of the support to the object.

Significant disadvantages of the known support are the asymmetry of the support, insufficient energy consumption, the inability to adjust the characteristics to achieve the required efficiency of protecting the object from vibration and a narrow scope.

Also known leaf spring support [2] adopted as a prototype. The support is made of at least two separate springs, diverging from the root - inner ends along the length at an angle from 0 to 180 °.

The means for fixing the leaf springs and springs as a whole are made in the form of a non-continuous cup with holes on its base for the pin and grooves on the cylindrical part for preferably tightly placing the package of leaf springs with simultaneous passage of the hole on the front - root part of each leaf spring through the pin.

The attachment unit of the leaf spring package of springs consists of two flange bushings - an inner one with a threaded outer surface and an outer one with a threaded hole, and also through non-through holes for pins, the joints of which together form a cylindrical body with an outer annular space to accommodate a non-continuous glass with root - inner the ends of the springs with pins, some ends of which are installed in the holes of the glass, and others in the through holes of the flange of the outer flange sleeve and the final mounting of the springs by wrapping flange bushings.

A threaded hole is provided in the inner flange sleeve for attaching the support to the vibration insulated object.

The attachment unit of the working - external part to the frame consists of two annular segments interconnected by transverse planes, preferably of a spherical profile, with an adjustable clearance to accommodate the working - external part of the springs. In this case, the working - outer part of the springs is installed in the attachment points directly or through non-metallic (rubber, composite) materials.

The present invention is directed to the improvement of leaf spring supports.

Significant disadvantages of the support [2] are:

1. The uneven rigidity in the deformation of the working part of the springs, ie the rigidity of the working part during deformation towards short leaf springs is greater than when deforming in the opposite direction.

2. Insufficiently secure fastening of leaf spring packages.

3. Not enough large rated load.

The technical result of the invention:

ensuring equal rigidity during deformations of the working part of the springs in any direction along the longitudinal axis of the support;

ensuring high rated loads;

ensuring reliability of fastening of leaf spring packages.

These results are achieved due to the fact that the leaf spring support contains a pair of leaf spring packages, which in the floating and stationary support elements are located opposite each other with a certain clearance under the conical part of the fixed support element, each pair of packages being individually attached by fixing means to the floating support .

Types of spring bearings from above and their corresponding transverse sections are presented in figures 1-4.

The support contains springs 1, 2, at least one pair of leaf spring packages B, C, D, E, F and G, I, J, K (FIGS. 1, 2) [or B, C, D, E and G, I, J (Figs. 3, 4)], an internal floating support element 3, fixing means 4, an external fixed support element 7 or 8 (Figs. 1-4) and rings 5, 6.

Pairs of leaf spring packages B, C, D, E, F and G, I, J, K (Fig. 1, 2) [or B, C, D, E and G, I, J (Figs. 3, 4) ] in the floating 3 and fixed 7 (or 8) supporting elements are located opposite each other with a certain gap under the conical part P and Θ of the outer stationary supporting element 7 (or 8).

Each pair of leaf spring packages B, C, D, E, F and G, I, J, K (Fig. 1, 2) [or B, C, D, E and G, I, J (Figs. 3, 4 )] is attached individually by fixing means 4 to the internal floating support 3.

Oscillating energy from the vibration-insulated object to the foundation is transmitted through the internal floating support element 3 via leaf springs 1, 2 springs and the external fixed support element 7 (or 8), that is, through an elastic connection. Therefore, vibration isolation occurs due to the adjustment of the vibrations of the leaf springs 1, 2 of the springs of the support at a frequency close to the frequency of dangerous vibrations, and the occurrence of reactive inertia paralyzing them in this connection.

Thus, the inertia reactive force is created using elastic elements - leaf springs 1, 2 springs, which are connected on one side through an internal floating support element 3 with a vibration-insulated object, and on the other through an external fixed support element 7 (or 8) with a frame.

In addition to the elastic connection between the vibration-insulated object and the frame, the support also provides a frictional connection, which is due to mutual displacement during deformation of the leaf springs 1, 2, which leads to the appearance of inter-sheet friction, which disperses vibrational energy, which significantly reduces the transmission of disturbing forces to the frame.

The support, which provides elastic and frictional coupling between the vibration-insulated object and the frame, is thus a spring damper.

Leaf springs 1, 2 springs, in addition to steel, can also be made of non-metallic materials, such as composite.

The outer fixed support element 7 (or 8) can also be made of rubber, composite or other material as a buffer or for sound insulation.

The working conical surfaces P and Θ (FIGS. 2, 4) of the fixed support element 7 (or 8) provide the maximum possibility of elastic deformation of the spring plates on the one hand, and on the other hand, through the elastic-damping connection, the effective operation of the support elements in the radially horizontal direction.

Due to the indicated features of the placement of leaf spring springs 1, 2 and their fastening, the support provides the ability to change individual sheets to others immediately before installation on the object or to change existing ones, and therefore the support is adjustable both in the range of the nominal load and in the frequency of natural vibrations.

In addition, part of the springs 1, 2 can be removed from the support, also without changing the design, if, for example, the object requires a lower nominal load.

These features provide an extension of the possibility of using one standard size of the support for several objects that differ in mass, and therefore the scope of its application.

Thus, the novelty of the invention is revealed from comparison with the prototype and lies in the fact that the leaf spring support contains a pair of packages of leaf springs B, C, D, E, F and G, I, J, K (1, 2) [or B, C, D, E, and G, I, J (Figs. 3, 4)], which in the floating 3 and fixed 7 (or 8) support elements are located opposite each other with a certain clearance under the conical part P and Θ of the fixed support element 7 (or 8), with each pair of packages individually attached by fastening means 4 to the floating support 3.

Any other supports with the above advantages, features and distinguishing features are not known.

Currently, drawings for the manufacture of the support are being developed. After the manufacture of the support is scheduled to test according to existing known methods.

Information sources

1. "Automobile: Design fundamentals: A textbook for universities on a specialty" Automobiles and automotive facilities ". / N.N. Vishnyakov, V.K. Vakhlamov, A.N. Narbut, etc. - M .: Engineering. 1986 - 304 s, (Fig. 219 p. 275).

2. RF patent No. 2254506, F16F 1/18, 06/20/2005. Bull. Number 17. Leaf spring support (prototype).

  The inscriptions on the drawings

1 - top springs;

2 - lower springs;

3 - internal floating support element;

4 - fixing means;

5 - an outer ring;

6 - an internal ring;

7 or 8 - external fixed support element;

B, C, D, E, F, G, I, J, K - spring leaves (Figs. 1-4);

B, C, D, E, F - the upper package leaf leaf spring (figure 2);

G, I, J, K — lower leaf spring package (FIG. 2);

In, C, D, E - the upper package leaf springs (figure 4);

G, I, J - the lower package leaf leaf spring (figure 4);

M - threaded hole;

N - hole for attaching the outer fixed support element 7 (or 8) to the foundation (base, frame);

P is the upper working conical surface of the outer fixed support element 7 (or 8);

Θ - the lower working conical surface of the outer fixed support element 7 (or 8).

Claims (1)

A leaf spring support containing a packet of leaf springs, attachment points of a packet of leaf springs, a floating and fixed supporting elements of a leaf spring, characterized in that it contains a pair of packages of leaf springs, which in the floating and stationary supporting elements are located opposite each other with a certain clearance under the conical part fixed support element, with each pair of packages individually attached by fastening means to the floating support.

Images