SU1564439A1 - Adjustable hydraulic transmission - Google Patents

Abstract

The invention relates to hydraulic gears of rotation using pumps and engines of volumetric displacement of the same type. The aim of the invention is to enhance the functionality by increasing the number and locations of the regulatory elements. For this, an adjustable hydraulic transmission comprising a housing 1, a driving 15 and a driven 16 shafts, rotating opposed cylinder blocks 8 and 9 with pistons 10 and 11 interacting with inclined washers 4 and 5 supported on oblique disks 2 and 3, one of which (5) is designed to change the angle of inclination together with an oblique disk 3, and flat distribution spools 12 and 13, a coupling 17 and a gear transmission in the form of gears 18 and 19 are inserted, interconnecting one of the oblique disks 3, which is fixed to shaft 16, and the distribution spool 12 first cylinder block is rotatably mounted. The change in gear ratio is made by changing the angle of inclination of the swash plate with an oblique disk. It is also possible to change the gear ratio by turning the distribution spool 12. 3 Cp f-ly, 2 ill.

Description

/ 8 70 I

22 24 21 Jf 25 FIG. 1

3

The invention relates to hydraulic gears of rotation using pumps and engines of volumetric displacement of the same type.

The purpose of the invention is to expand the functionality by increasing the number and locations of the control elements,

FIG. 1 depicts adjustable hydraulic transmission, longitudinal section; in FIG. 2, node I in FIG.

The transmission consists of a housing 1 with two axial-piston hydraulic machines placed in it, consisting of skew discs 2 and 3, inclined washers 4 and 5, crosses 6 and 7, rotating opposit cylinder blocks 8 and 9 with pistons 10 and 11, flat distribution spool 12 with a toothed rim (not shown), a flat distribution spool 13 with nozzles 14. The oblique disk 2 is fixed on the drive shaft 15. The cylinder blocks 8 and 9, as well as inclined washers 4 and 5, are fixed on the driven shaft 16. The shafts 15 and 16 are accomplished with clutch 17. B transmission also has Sisters 18 and 19 interconnected by intermediate shafts 20 and 21 and clutch 22. At the ends of intermediate shafts 20 and 21, included in clutch 22, screw splines of different inclination 23 and 24 are made. The oblique disk 2 has a toothed crown (not shown). . The gear rims on the oblique disk 2 and the distributor 12 together with the gears 18 and 19 form a gear transmission. The distributor 12 is rotatably mounted around the axis of the drive shaft 16. The distributor 13 with nozzles 14 is rotatably mounted in the housing 1 around the axis of the drive shaft 16. B, the distributors 12 and 13 have channels 25 and 26 connected to the nozzles .14, one of which the suction and the other injection. Distributors 12 and 13 of channels 25 and 26 are interconnected. The inclined washer 5 is adapted to change the angle of inclination.

The transmission works as follows.

When the drive shaft 15 rotates, the spit washer 2 interacts with the inclined washer 4 and the pistons 10 blocks

o

five

0

five

0

five

40

45

50

55

ka cylinders 8 make reciprocating motion. The pressurized fluid through the distributor 12, which rotates synchronously with the slanting disk 2 and the distributor 13 enters the cylinder block 9, causing the pistons 11 to reciprocate. The pistons 11, acting on the inclined washer 5, cause it to rotate together with the driven shaft 16, the fluid circulates between the distributors 12 and 13 through the channels 25 and 26, one of which is the channel high and the other

low pressure i

Changing the gear ratio is made by changing the angle of inclination of the inclined washer 5 together with the oblique disk 3. It is possible to change the gear ratio by turning the distributor 12. To do this, move the clutch 22 along the intermediate shafts 20 and 21, having screw slots of different inclination at the ends. The rotation of the distributor 12 is equivalent to the change in the angle of inclination of the inclined washer 4. In the same way, the gear ratio also changes with the rotation of the distributor 13 relative to the housing 1. It is also possible to connect the drive 15 and the driven shafts 16 by the coupling 17.

Nozzles 14 are designed to connect other energy consumers.

Claims (3)

1. An adjustable hydraulic transmission, comprising a housing, a drive and driven shafts, rotating opposing cylinder blocks with pistons interacting with inclined washers supported on slanting discs, one of which is configured to change the angle of inclination together with a slanting disc, flat distribution spools located between cylinder blocks and hydraulically interconnected channels, characterized in that, in order to expand the functional capabilities by increasing the number and locations of elements, a clutch is inserted into it and a gear drive interconnecting one of the oblique disks, which is mounted on the drive shaft, and a distributor of the first cylinder block mounted for rotation, both of the cylinder blocks and inclined axes mounted on the driven shaft. 2. Transmission according to claim. Characterized in that the coupling 64439 made with the possibility of changing the mutual position of the oblique disk and the associated distributor, and the other distributor is provided with nozzles connected to the channels connecting the distributors. 3. Transmission according to clause J, which is often so that she supplies the wife with an additional clutch connecting the drive and driven shafts. 2