SU1714249A1 - Planetary precision transmission - Google Patents

Abstract

The invention relates to the mechanical gears. The aim of the invention: reliability and service life increasing by means of engagement uniform loading. The rotation movement from the carrier 2 by the pin 3 is transmitted to the precession wheel 4 manufactured with two corona: the general 10 and the complementary one 11 having teeth in the form of rollers. The precession wheel 4 revolving around the rigid cone wheel 9 sends the rotation to the output shaft 7 through the cone wheel 8. The rotation axes of carrier 2 and output shaft 7 are mutual perpendicular. The cone wheels 8 and 9 and precession wheel 4 are carried by the spherical support 6.

Description

and an additional 11, having a tooth in the form of rollers. With a stationary conical wheel 9, the precession wheel 4, rolling on it, will transmit rotation through the conical wheel 8 to the output shaft 7. The axes of rotation of the carrier 2 and the output shaft 7 are mutually perpendicular. Bevel wheels 8 and 9 and the precessional wheel 4 are supported on a common spherical support 6. 5 Il.

The invention relates to mechanical gears and can be used in various fields of engineering.

The purpose of the invention is to increase the reliability of the load capacity and durability due to uniform loading of the gears.

FIG. 1 shows the planetary precession transmission: in FIG. 2 the same, with the precessional gear immobilized by rotation, the wheel; in FIG. 3 — planetary precessional differential; in fig. 4 profilogram of the toothed roller gear, when the number of rollers of the precession wheel is more than the number of teeth of the bevel gear per unit: on. 5 is the same when the number of rollers of the precession wheel is less than the number of teeth of the bevel wheel per unit

The planetary precession gear comprises a housing 1, in the hub of which the precession gear is located, an input shaft rigidly connected with the carrier 2, having an inclined trunnion 3, a precessional shaft with 4, connected with the carrier 2 by means of balls 5 and placed on a spherical support 6 , an output shaft 7, a bevel wheel 8 mounted thereon, a second bevel wheel 9 rigidly coupled to the housing 1.

The precessional wheel 4 has a primary 10 and an additional 11 rims. The crowns can be serrated (Fig. 2) and can have teeth on the side of tapered rollers (Fig. 1 and 3).

The axes of the carrier 2 and the output shaft 7 are mutually perpendicular. Bevel wheels 8 and 9 are also supported on the spherical support b, installed symmetrically on both sides of the precession wheel 4 for interaction with its rims 10 and 11.

The movement of the carrier 2 can be communicated by means of a cylindrical pair 12 (Fig. 1). conic pair 13 (fig. 2} or screw pair 14 (fig. 3).

The cone wheel 9 can also be connected with the second output shaft 15 (Fig. 3).

The precession wheel 4 may be connected to the housing by means of a gear coupling 16 (Fig. 2).

Planetary precession transfer works as follows.

The rotation from the carrier 2 is transmitted through the trunnion 3 to the precession wheel 4, which is engaged with both the two wheels 8 and 9. With the wheel 9 (Fig. 1) fixed, the recession wheel 4 will roll over the conical wheel 8 onto the output wheel shaft 7 with reduction

Ze Zii

and

ZsZii-Zg Zio

where Ze and Zg are the numbers of the teeth of the bevel gears 9 and 10; B Zio, ZH are the numbers of the teeth (or the number of rollers) of the crowns 10 and 11 of the precession wheel 4.

When performing a transmission with two output shafts (Fig. 2), the latter will rotate respectively with reduction

and,: Z9

and 15

Z8 - Zio

Zg-Zii

Placing the precession wheel and the bevel gear on a common spherical support greatly simplifies the design of the gear and its assembly.

Formulas a and 3 on the brecket Planetary precession gear, comprising a housing, an input shaft and an output shaft, a carrier having a pin inclined to its axis, a carrier axis and an output shaft are mutually perpendicular, a conical wheel connected to the carrier is connected to the output shaft, interaction with a conical wheel and a spherical support for mounting the precession wheel, characterized in that, in order to increase the load capacity and durability, the precession wheel has

additional crown, the teeth of which and the main crown are made in the form of rollers, the gear is provided with a second conical wheel, placed together with the first

symmetrically on both sides of the mission wheel to interact one at a time with the main and additional rims, and both bevel wheels are supported on a spherical support.

FIG. 2

fi 3 ee

fe f

FI.5

Claims (1)

Claim A planetary precession gear, 30 containing a housing, input and output shafts, a carrier having a pin inclined to its axis, the axes of the carrier and the output shaft are mutually perpendicular, a conical wheel mounted on the output shaft, a precession wheel connected to the carrier 35 to interact with the conical wheel and spherical support for installing a precession wheel, characterized in that, in order to improve the load capacity and durability, the precession wheel has an additional crown, the teeth of which and the main crown are made In the form of rollers, the transmission is equipped with a second bevel wheel, placed together with the first 45 symmetrically on both sides of the precession wheel for interaction one with the main and additional crowns, and both bevel wheels are supported on a spherical support. Fig.Z J Figts FIG. 5