SU1684110A1 - Gear box - Google Patents

Abstract

The invention relates to mechanical engineering. The goal is to simplify the design of the gearbox and increase its reliability. The gearbox contains body 1, input 2, middle 3 and output 4 shafts, three planetary rows, three brakes and two locking clutches 14 and 15. The clutches are located on both sides of the gearbox and have the same design for unification. When the controlled elements (clutches and brakes) are paired, the links of the planetary rows are connected to a specific power circuit that implements the corresponding gear ratio on each of the three forward and reverse gears. 2 Il.

Description

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The invention relates to mechanical engineering and can be used in transmissions of industrial tractors and road-building machines.

The aim of the invention is to increase the reliability of the transmission.

Figure 1 shows the diagram of the gearbox; FIG. 2 shows a layout of the proposed gearbox for mounting it on a tractor with a modular design of transmission assemblies.

The gearbox includes a housing 1, an input shaft 2 connected to the carrier 3 of the first planetary row 4, the middle shaft

5 coupled to sun gears

6.7 and 8, respectively, of the first 4, second 9 and third 10 planetary rows, output shaft 11 connected to carrier 12 of the third planetary row 10, first 13, second 14

and the third 15 brakes connected respectively by epicycles 16-18 of the first, second and third planetary rows, the first locking clutch 19 installed for coupling the input shaft to the middle shaft, and the second locking clutch 20 mounted for connecting the average shaft with output shaft.

Transmission works as follows.

When the controlled elements (clutches and brakes) are connected in pairs, the links of the planetary rows are connected to a certain power circuit that implements the corresponding gear ratio on each of the gears.

The serial numbers of the received gears, the controlled elements included here (indicated by crosses) and the gear ratios with the accepted ratios of the numbers of the teeth of the epicycles and the sun gears of the Zie / Ze planetary gears - 2.395; 217 / Z 2.2; Zis / Ze 2.2, given in the table.

The locking sleeves are located on both sides of the gearbox, which simplifies the supply of oil to control them.

Claims (1)

Invention Formula The gearbox, comprising a housing, input, middle and output shafts, three planetary rows, three brakes and two locking clutches, the first, second and third brakes connected respectively to the epicyclic gears of the first, second and third planetary rows, the carrier of the second a planetary row is connected to an epicyclic gear wheel of the third planetary row, characterized in that, in order to increase reliability, the sun gears of the first, second and third planetary rows are connected to the middle shaft, the first planetary gear d is made with double satellites, one of the locking sleeves is installed for coupling the input shaft with the middle shaft and the other for connecting the middle shaft with the output shaft, the input shaft is connected to the carrier of the first planetary row, and the output shaft with the carrier of the third planetary p yes Fae 2