SU57805A1 - Eccentric - Google Patents

Description

On the whole, in cases where ecocentrics are used, there is often a need to change both the eccentricity value and the eccentric wedging angle on the move, for which it is necessary to smoothly move the eccentric center in the first case or the circumference - 1 in the second , or, finally, for the first and second cases together.

Among the various solutions to this problem was the proposal to apply an eccentric Ntri K, which contains a core along a shaft that is asymmetrical about the axis of the latter, a core rotated by this shaft and covers. A clip with a stud, with rims between the core and the clip.

Such a device makes it possible to realize the change of eccentricity magnitude, however, it does not allow the eccentric wedging angle to be changed, or the eccentricity value — and its angle: wedging.

. In order to realize the last two possibilities, the core of such an eccentric, according to the invention, is twisted in the same way that its axis does not lie in the О1Д1Н10Й plane c. shaft, and the axis of the core is twisted or

by the lanyard LIINII1, located along its entire length for the distance of the eccentricity wines from the axis, or along a helix located on the conical noBepxHOCTSi, the axis of which is the axis of the shaft.

In FIG. G shows a cross-section of the eccentric, according to the invention, with its shafts. And the yoke; FIG. 2 - its section along the axis; FIG. Zv, Zv, and 3c - tr1 are the projections of the asymmetric eccentric core in the known form of implementation, which allows only a change in the value of the eccentricity; FIG. 4a, 4b and 4c are the same three projections; we have a metric core, the axis of which is twisted along a cylindrical connecting line, allowing P only to change the angle of jamming of the eccentric with a constant eccentricity radius, and FIG. 5a, 5b & 5c - again, three p-rotations of an asymmetrical core, the axis of which is twisted along a screw line located on a conical surface, which makes it possible to simultaneously change the eccentricity and the angle of its jamming.

FIG. 1 and 2 are denoted by a rotating shaft that is worn

the longitudinal grooves of the eccentric core 5, which is old. can be moved along the shaft by means of the keys 2. This movement is made in a known manner by means of the rod 4.

Along the circumference of the eccentric 5 there is a row of balls 5 enclosed in the holder 6, like a ball holder, which is fixed in the outer rim 7, which is integral with the eccentric rod 8.

The holder b is placed M1 between non-i movable guides 9 preventing the movement of the holder 6 with balls 5 and the rim 7 in the direction of the axis of the shaft /.

The contact of the balls 5 with the surface of the eccentric core 3 occurs along the line Vg (Fig. 2, Za, Sv, 3c), which is the section of the core 3 of the plane VG and forming a regular circle.

If only the amount of eccentricity is required to change the stroke, the heart can be made in the form of a cylinder (Fig. 3, Zv, 3c) with an asymmetrically located axis of rotation shifted by an angle o. with respect to the geometrical axis Os of the cylinder n with the bases perpendicular to the Rotation of the O.i-Oe.

At the same time, the diameter of the circle Vg (Fig. 2 and Za) will remain constant for any section with a plane parallel to the VG, and therefore, regardless of the position of the core 3 on the shaft 1, the eccentricity value will vary according to the equation p xiga, where x is the value moving the core 3 from its initial position (point.

But since both axes lie in the same plane, then the change in the wedging angle of the core as it moves And along the axis will not occur.

In contrast, in the embodiment of FIG. 4a, 4b, 4c, the eccentric core 3 is a twisted cylinder, the axis of which forms a cylindrical helix line that is 04-04 Oz-OB from the axis of rotation of the core, which is an eccentricity value.

At ET01M, the entire section parallel to the DB plane gives the same circle Vg. When the core 3 is moved along the shaft 1 by means of a longitudinal groove and key, the distance between the helix and the axis remains unchanged, but the wedging angle of the core varies. : is proportional to the magnitude of the displacement X from the initial point of 0%, i.e. kx.

In the embodiment of FIG. 5a, 5b, 5c, the core 5 (is a body, the Ot-Oz axis of which forms a helix located on the horse's surface, the latter axis being the axis of the O.i-Ov shaft.

With this core shape, the cross sections of planes parallel to the GW also give the same circumference, BUT while the radius of eccentricity is P xtg-, and the wedging angle is kx, i.e., as the eccentric 3 moves, the value of X along the shaft / eccentric jamming angle.

The proposed eccentric is used by him for all kinds of regulators, spools of steam engines, internal combustion engines, piston pumps, couplings with a smooth change in the number of revolutions, etc.

The core can be fabricated on a conventional TOKapHON machine using a tool mounted on its chuck, which makes it possible to continuously displace the center of the eccentric or direct for the shape of the 11 fig. Zv, Sv, 3c, or circumferentially for FIG. 4a, 4b, 4c, or in a spiral for FIG. 5a, 5b, 5c.

P ip e dme t inventions.

Claims (3)

1. An eccentric containing an adjustable cylinder along the shaft is asymmetrical with respect to the latter, a cylindrical core rotated by this shaft and covered by a yoke with a thrust, characterized in that the core is twisted and, moreover, its axis does not lie in the same plane with the shaft. ; shaft. 2. The form of the eccentric under item 1, is distinguished by the fact that the axis the core is twisted along a cylindrical screw line, which is located along its entire length at a distance of the radius of eccentricity from the shaft axis. 3. The shape of the eccentric Claim 2, characterized in that the core axis is twisted along a helix located on a conical surface, the axis of which is the axis of the shaft.