SU1442755A1 - Planetary reduction gear - Google Patents

Abstract

The invention relates to mechanical engineering. In order to increase the gear ratio of the planetary gearbox by selecting its kinematic scheme in the gearbox containing three planetary rows with three main links in each - the bottom of the central wheels and the carrier, the power from the input shaft goes to the central wheel 2, and from it through the satellites carrier 3 is moved apart in two parallel streams. One stream is transmitted to the output shaft 11 through the carrier 3J and the other flows to the output shaft through the central wheels 4, 5, 7 and the carrier 9. 2 sludge.

Description

7 Yu

S

(Y)

Fiz.

The invention relates to mechanical engineering and can be used in drive mechanisms as a planetary gearbox.

The purpose of the invention is to increase the gear ratio of the gearbox by selecting a kinematic scheme.

Figure 1 shows the kinematic diagram of the planetary gearbox; on - 2 - the same, another implementation.

The planetary gearbox comprises a housing 1 J input and output shafts, three planetary rows, the first of which includes three main links; central wheel 2 with external teeth, carrier 3 with satellites and central wheel 4 with internal teeth; second row includes; a central wheel 5 with external teeth, mij, a carrier 6 with satellites, a central wheel 7 with internal teeth; the third row includes: a central wheel 8 with external teeth, a carrier, 9 with satellites, and a central wheel with 10 with internal teeth. The input shaft is connected to the wheel 2, the drive 3 is connected to the planet carrier 9 and the output shaft 11, the central wheel 4 is connected to the wheel 5, the central wheel 7 is connected to the wheel 8, and the carrier b and the wheel 10 are braked on the gearbox housing,

In the embodiment (figure 2) the carrier 3 is connected to the wheel 5, and 1; the central wheel 4 is connected to the planet carrier 9 and the output shaft 11. The connection of the remaining elements is similar to that described (figure 1).

The planetary gearbox (figure 1) works as follows.

The power from the input shaft goes to the central wheel 2, and from there to the satellites drove 3, where the power is split into two parallel flows. One stream is transmitted to the output shaft 11 through the carrier 3, and the other flows to the output shaft 11 through the central wheels 4, 5, 7 and the carrier 9,

The planetary gearbox shown in FIG. 2 works in a similar manner.

The proposed embodiment of the planetary gearbox (FIG. 1) allows the power to be transmitted in two parallel streams to one output shaft with

increased gear ratio determined by the formula

AND

1 P - PvP.z P.-PZ- 3

where r

1. g

49 Z.

Z 7

R, ..- yy

  - a parameter, respectively, of the first, second and third planetary mechanisms; g, Zy, Zg are the number of teeth of the central wheels with external teeth; Z .JP - the number of teeth of the central wheels with internal teeth.

In the embodiment of the planetary gearbox (Fig. 2), the gear ratio is

And - (PI + Pi - Р, - Р-Р-г-Рэ +

thirty

Claims (1)

/ P Pi-Pj) Invention Formula A planetary gearbox, comprising a housing, input and output shafts and three planetary rows, each including three main links: two central wheels - one with external, the other with internal teeth, and a carrier with satellites, of which the central wheel with external teeth of the first the row is connected to the input shaft, the carrier of the second row and the central wheel with internal teeth of the third row are connected to the housing, and the carrier of the third row is connected to the output shaft, characterized in that, in order to increase the gear ratio of the gearbox The choice of kinematic scheme, the central wheel with internal teeth of the second row is connected to the central wheel with external teeth of the third row, and of the other two main links of the first row, one is connected to the central wheel with external teeth of the second row, and the other with output shaft. TI and P 7 Yu jk V t  2