SU1642145A1 - Planetary gearbox - Google Patents

Abstract

This invention relates to automotive engineering. The goal is to expand the kinematic capabilities of the gearbox with unified planetary rows. When the controlled brake 6 is activated, the torque from the input shaft 2 is transmitted through the central wheel 12, the carrier 10, the carrier 9 to the output shaft 3. The gear ratio is 1 + K. When the control brake 7 is engaged, the second gear is engaged, the gear ratio on which is (1 + K) / K. The torque is transmitted from the input shaft 2 through the central wheel 11 and the carrier 9 to the output shaft 3. The third gear is engaged when the control brake 4 is applied. The torque is transmitted in two streams: one through the carrier 13, the central wheels 16.17 and 18; the other through the central wheel 12. The power flows are summed on the driver 10 and through the carrier 9 and pass to the output shaft 3. The gear ratio in third gear is (1 + К) / (2 + К). The fourth gear is engaged with a controlled brake S. The power from the input shaft 2 is transmitted in two streams: one through the carrier 13, the carrier 14 and the central wheels 17.18; another through the central wheel 12. The summation of the power flows is carried out on the driver 10, after which the torque is transmitted through the carrier 9 to the output shaft 3. 1 sludge.

Description

TO

GO

J

01

FIELD OF THE INVENTION The invention relates to mechanical engineering, in particular to automotive engineering.

The purpose of the invention is the expansion of kinematic possibilities with unified planetary rows.

The drawing shows the kinematic scheme of the gearbox.

The gearbox contains the housing 1, the input shaft 2, the output shaft of the controlled brakes 4, 5, b, three planetary rows, each of which includes a central wheel with external teeth, a central wheel with internal teeth and a carrier with satellites, an additional control The brake 7, the additional planetary row, including the central wheel 8 with external teeth, connected with the additional controlled brake 7, drove 9, connected with the output shaft 3 and the carrier 10 of the third row, and the central wheel 11c. internal teeth ti associated The main wheel 12 with the outer teeth of the third row, the carrier 13 of the first row, the carrier 14 of the second row and with the input shaft 2. The central wheel 15 with the outer teeth of the first row and associated with the first controlled brake 4, the central wheel 16 with internal teeth of the first row and associated with a central wheel 17 with external teeth of the second row, a central wheel 18 with internal teeth of the third row and a third controlled brake 6. and the central wheel 19 with internal teeth of the second row and with second controlled brake 5.

Transmission works as follows.

In the first gear, a controlled brake 6 is switched on, which provides a stop for the central wheel 18 with internal teeth of the third row.

The torque from the input shaft 2 through the central wheel 12 with the outer teeth of the ei-third row is transmitted to the carrier 10 of the third row, the carrier 9 of the fourth row and the output shaft 3 associated with it. The gear ratio of the box is determined

 + k

eleven

., Zl6 Zl9 Zl8 Zl1

where K - - - - parameter Zis Zi Zi2 Zsn

planetary rows;

Zi is the number of teeth of the corresponding central wheel.

To enable the second gear, it is necessary to turn off the controlled brake b and turn on the controlled brake 7. At the same time, the torque from the input shaft 2 is

given through a central wheel 11 with internal teeth and drove 9 of the fourth row onto the output shaft 3. and the gear ratio is

) 2

1 + k

To activate the third gear, it is necessary to turn on the controlled brake 4 with the other controlled brakes off, ensuring the central wheel 15 stops. The torque from the input shaft 2 is transmitted by two streams: one through the carrier 13 and the central wheel 16 of the first row to the central wheel 17c external teeth of the second row and a central wheel 18 with internal teeth; the other through the central wheel 12 with the outer teeth of the third row. Both power flows are summed on the carrier 10 of the third row and then pass through the carrier 9 of the fourth row to the output shaft Z. In this case, the gear ratio is

In the fourth gear, a controlled brake 5 is activated, ensuring the central wheel 19 with internal teeth stops. The torque from the input shaft 2 to the output shaft 3 is transmitted in two streams; from the input shaft 2 through drove 13 of the first row, drove 14 and the central wheel 17 of the second row, central wheel 18, drove 10 of the third row and drove 9 of the fourth row; from the input shaft 2 through the central wheel 12, drove 10 of the third row and drove 9 of the fourth row.

The summation of power flows takes place on the carrier 10 of the third order. In this case, the gear ratio is

| 4 1 + k

1 + k + k2

Thus, the proposed transmission implements four gears. At the same time, with the same planetary rows, the gamma transmission ratios realized by the box are close to a geometric progression.

Claims (1)

The formula of the shade is a planetary gearbox, comprising a housing, input and output shafts, three controlled brakes and three planetary rows, each of which includes a central wheel with external teeth, a central wheel with internal teeth, and a carrier with satellites different with that. what. in order to expand kinematic possibilities with unified planetary rows, the box is equipped with additional controlled brakes and a planetary row including a central wheel with external teeth associated with an additional controlled brake, drove connected to the output shaft and drove of the third p Yes, and the central wheel with internal teeth, 0 associated with the central wheel with the outer teeth of the third row, the carriers of the first and second rows and with the input shaft, the central wheel with the outer teeth of the first row and associated with the first controlled brake, the central wheel with the inner teeth of the first row connected with a central wheel with external teeth of the second row, a central wheel with external teeth of the third row and a third controlled brake, and a central wheel with internal teeth of the second row connected with a second controlled brake.