RU2600469C1 - V-belt variator - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to infinitely variable speed transmissions with flexible link, and can be used in drives of various vehicles including ball bearing chassis of wheel-track vehicles. V-belt variator comprises moving in the horizontal plane opposite oriented equal-sized semi-pulleys on shafts and an elastic belt, parallel rotational axes of the semi-pulleys lie on a common cylindrical surface, the generatrix of which is equidistant from the axis of rotation of the variator, and connection of the semi-pulleys with the shafts is splined with filling of cylindrical slots in the connection with balls by means of a mechanism, which prevents circulation of the balls between the slots. Semi-pulleys can be made hyperboloidal or conical. Herewith the semi-pulleys can be made with longitudinal-radial slits.

EFFECT: provided is expanded functional capabilities of the V-belt variator.

3 cl, 3 dwg

Description

The invention relates to mechanical engineering, in particular to continuously variable transmissions with flexible coupling, and can find application in the drives of various vehicles, including a ball-bearing chassis on a caterpillar track.

Known V-belt variator / cm. PM No. 107310 (class F16H 9/16, 55/56) dated March 16, 2011 /, containing counterclockwise isometric half-cows moving in the horizontal plane - hollow truncated cones on a common shaft and an elastic belt. On the half-cups, through longitudinal radial slots are made for the possibility of half-cows entering each other.

The axial mobility of the hubs of the half-cows along the common shaft in the variator prototype is ensured by the presence of splined grooves and protrusions on the shaft, which weakens the shaft in strength and limits the functionality of using the circuitry underlying the variator prototype.

In order to eliminate the noted drawback and expand the functionality in a V-belt variator containing counter-moving equidistant half-bolts on the shafts that are movable in the horizontal plane and an elastic belt parallel to the axis of rotation of the half-cows, lie on a common cylindrical surface, the generatrix of which is equidistant from the axis of rotation of the variator, and the connection of the half-cows with shafts are made spline with filling of cylindrical grooves in connection with the balls through a mechanism that excludes circulation balls between the grooves.

In this case, the half-cows can be made hyperboloid or conical.

In this case, the half-cows can be made with longitudinally radial slots.

The technical solution proposed by the invention is illustrated in FIG. 1 (hyperboloidal embodiment of the half-cows), FIG. 2 (conical embodiment of the half-cows) and FIG. 3 (a variant of the mechanism that excludes the circulation of balls between the grooves in the spline connection).

The V-belt variator according to the invention comprises counter-movable, equally oriented half-pulleys (1 and 2) on the shafts and an elastic belt 3 that are movable in the horizontal plane and the O-O half-pulleys (1 and 2) parallel to the axis of rotation lie on a common cylindrical surface, the generatrix of which is equidistant from the axis rotation O _o -O _{o the} variator, and the connection of the half-cores (1 and 2) with the shafts 4 is made spline with filling of cylindrical grooves 5 in connection with the balls 6 by means of a mechanism that excludes the circulation of balls 6 between the grooves 5.

In this case, the half-cows (1 and 2) can be made hyperboloid or conical.

In this case, the half-cows (1 and 2) can be made with longitudinal radial slots.

V-belt variator according to the technical solution proposed by the invention works as follows.

In the initial state (see the left parts of Figs. 1 and 2), the elastic belt 3 (for example, the round version is selected) lies on the small diameters of the hyperboloid half-cows 1 and 2 (in Fig. 1) or in the plane of the vertices of the cones of the conical half-cows 1 and 2 (in Fig. 2). When the axial approach of the half-cows 1 and 2 (see the right parts of Figs. 1 and 2) is met, the elastic belt 3 rises by e ₁ or e ₂ compared with the initial state above the half-cows (1 and 2), respectively, of a hyperboloid or conical design. This increases not only the distance of the belt 3 to the axis of rotation O _o -O _{o of the} variator, but also the linear speed of the belt 3, which extends the functionality of using the variator circuit, for example, in wheeled chassis made according to a ball bearing scheme.

A variant of the splined connection of the half-cores (1 and 2) with the shafts 4 by means of a mechanism preventing the circulation of balls 6 between the grooves 5 is shown in FIG. 3.

Replacing the two-gear variator with a multi-gear variator with parallel axes of rotation of the half-pulleys (1 and 2) made it possible to expand the functionality of the variators, including when used in vehicles with wheeled and / or wheeled-tracked travel.

One of the possible areas of application of the proposed variator scheme is the wheels of the chassis of agro-bridges of the author's design / cm. US Pat. RU No. 2298304, 2489830, 2499378, 2513005, 2545050, 2545547, 2547912 ... /.

Thus, the technical solution proposed by the invention is new, has an inventive step and is industrially applicable.

Claims (3)

1. V-belt variator, containing horizontally opposed, equally oriented half-cushions on shafts and an elastic belt, characterized in that the parallel axes of rotation of the half-cows lie on a common cylindrical surface, the generatrix of which is equidistant from the axis of rotation of the variator, and the connection of the half-cows with the shafts is made spline with filling cylindrical grooves in connection with the balls by means of a mechanism that excludes the circulation of balls between the grooves. 2. V-belt variator according to claim 1, characterized in that the half-cows can be made hyperboloidal or conical. 3. V-belt variator according to claim 1 or 2, characterized in that the half-cows can be made with longitudinal radial slots.

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