SU1432297A1 - Multiflow friction transmission - Google Patents

Abstract

The invention relates to mechanical engineering, namely to friction gears, and can be used in gearboxes and gearboxes-converters of rotational motion into reciprocating at a lower frequency. The invention makes it possible to increase the technical capabilities of transmission by expanding the range of variation of the eccentricity of the drive shaft and the known ring. When the rolling shaft 1 of the transmission body 3 rotates, the separator rollers 4, the additional rollers 5, the floating rings 6 and the drive ring 2 roll in relative to each other without sliding. Ring 2 can rotate if its axis is fixed, or make a flat movement. Increasing the load on the driven link causes compression of the rolling elements 3 against the surfaces of the roller and the ring 2, which form a wedge between them. This automatically adjusts the normal forces in the transmission with minimal system deformation. The locking device including the rollers 4, 5 and the ring 6, which ensures the invariance of the relative position of the axes of the rolling bodies during operation, does not impose any restrictions on the amount of eccentricity. 4 il. S

Description

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The invention relates to mechanical engineering, namely to friction gears, and can be used in gearboxes and gearboxes-converters, mechanisms that convert rotational motion into reciprocating with a frequency of double ho DON of the executive link that is not equal to the frequency of rotation of the input shaft. .

The purpose of the invention is to increase the technological capabilities of a multi-stream friction transmission by expanding the range of variation of the eccentricity of the driven ring and the drive shaft.

Figure 1 shows friction multi-threaded transmission; figure 2 - section aa in figure 1; FIG. 3 shows a multi-flow friction transmission in a gearbox with fixed axes of rollers in FIG. 4, a reduction gearbox-converter of rotational movement into reciprocating with a lower frequency, in which the multi-flow friction non-axial transmission operates in a planetary mode.

In Figures 1, 3 and 4, the following symbols are used; d, - diameter leading roller; d-j is the working diameter of the outer ring; e - eccentricity; and; and and - the angular velocities of the driving and driven members.

The transmission contains the drive shaft 1, the driven ring 2, between which there are 3 rolling bodies of different diameters. Between the bodies of 3 rolls, there are dividing pots 4, four of which form two locks with additional rollers 5. The dividing rollers 4 are covered by floating rings 6.

The transmission can operate in two modes: as a multithreaded friction reducer with fixed axes of the rolling element (Fig. 3) and as a friction planetary gear in a rotary motion reducer-converter (Fig. 4).

In the first case, the driven ring 2 can rotate only around its axis. It also removes the output torque. Gear ratio U,. In the second case, the ring 2 is rigidly connected to the crank of the crank-slider mechanicalism and the useful load is removed from the ring 2 in the form of a radial force. Pered14322972

the exact number of the mechanism is U l + dj / d,. The load applied to the friction gear in such a mechanism changes its magnitude and direction with the frequency of movement of the executive link.

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The geometric immutability of the rolling element system is provided by locking devices, which form an additional 5 and separating 4 rollers.

The floating rings 6, carried away by the separating rollers 4, are displaced in the direction of one of the internal or additional rollers 5. In this case, the separating rollers 4 interacting with this additional roller tend to move away from each other in the circumferential direction. But such a distance of the rollers 4 cannot occur, since the rolling bodies 3 prevent it from resting against other separating rollers 5.

When the magnitude or direction of the load acting on the gear changes, the relative position of the rolling elements does not change. This results in a low inertia of the system and makes the proposed transmission suitable for use in pulsator-loaded gearboxes and converter gearboxes.

Claims (1)

Invention Formula Friction multi-threaded transmission containing a drive shaft, a driven ring, rolling force bodies located between them, a device fixing the relative position of the rolling bodies, including separation rollers and floating rings enclosing them, in order to increase technological capabilities by expanding the range of variation of the eccentricity of the drive shaft and the driven ring, the transmission is equipped with additional rollers placed between pairs of separation rollers, the sum of which diameters x is less than the distance from the drive shaft to the driven ring, and one of the second ones is designed to contact the separating rollers and the driven ring, and the other with separating rollers and the driving shaft. A A turned Sh t about/. tS } ///// /// x / t t FIG. 2 / 2 T u //// 7777 (J, i h Fi.Z Fy