SU1381010A1 - Transmission - Google Patents

Abstract

The invention relates to the field of automobile and tractor construction and can be used in transmissions of road and construction vehicles, mainly tractors. The purpose of the invention is to increase the operational characteristics 10 due to the expansion and kinematic range. The transmission includes coaxially interconnected drive 1 and driven 2 shafts parallel to them intermediate 3 and additional 4 shafts, gears 10, mounted on drive shaft 1 freely, connected to it via switching devices 6, for example synchronizers, and engaged with gears 11, rigidly mounted on the intermediate shaft 3. Gears 12, 13 and 14 are freely mounted on the reversing shaft 5 and connected to it by gear couplings 8 and 9. On the driven shaft 2, the gear 15 is simultaneously engaged with gears 13 and 17, subsequently with S 15 16 (L

Description

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connected to the intermediate shaft 3 by a gear coupling 7, gear 18 of the shaft D connected to the intermediate shaft by a gear coupling 7, simultaneously engaged with gears 16 and 12. Gear 14 carries a gear ring 22 of a ring gear that is hooked to the satellite 21, mounted on VODRG-20, which is rigidly fixed on the reversing shaft 5, the sun gear 23 is connected to the brake T. The gearbox provides 16 forward gears and 8 reverse gears and operates as follows. The gears 10, which are freely seated on the drive shaft 1, are alternately turned on by synchronizers 6 and transmit rotation to the intermediate shaft 3. By connecting the intermediate shaft 3 toothed clutch 7 with gear 18 or gear 17, we obtain respectively

or working range of gear. Gear couplings 8 and 9 at the same time off. To obtain a lower operating range of forward and reverse gears, it is necessary to use gear couplings 9 and B to include gears 19, 14 and 13, 15 - forward gear and gears 19, 14 and 12, 18, 16 - reverse gear. Gear coupling 7 in this case is turned off. To obtain the technological range of gears for forward and reverse, it is necessary to turn off gear couplings 7 and 9, and with the help of gear coupling 8, brakes T of the planetary row and include gears 19, 14 and 22, 23, satellites 21 and carrier 20, gears 13, 15 - forward, gears 19, 14 and 22, 23 satellites 21, drove 20, gears 12, 18, 16 - reverse. 2 Il.

one

The invention relates to automotive construction and can be used in transmissions of road and crushing machines, primarily tractors.

The purpose of the invention is to increase the operational characteristics by extending the improved distribution of gear ratios.

FIG. Figure 1 shows the kinematic diagram of the gearbox where the sun gear is associated with the brake; in fig. 2 shows a kinematic diagram of a gearbox where the epicyclic gear is associated with a brake.

The gearbox contains leading coaxially leading 1 and driven 2 shafts, intermediate 3 and additional 4 shafts, a reversing shaft parallel to them 5. Pa switching device 6 are located at Pa drive shaft I. Synchronizers, friction, gear couplings and etc. On the intermediate 3 and reversible 5 shafts mounted gear couplings 7, 8 and 9.

On the drive shaft 1, the loosely mounted gears 10 are permanently engaged.

with gears 11 fixed on intermediate shaft 3. Gears 12, 13 and 14 are loosely mounted on the reversing shaft 5 and connected with it by gear couplings 8 and 9, respectively. Gears 15 and 16 mounted on the driven shaft 2, rigidly engaged: at the same time - gear 15 is engaged with gear 13 and 10 by gear 17, the latter is freely mounted on the intermediate shaft 3 and is connected to it by a gear coupling 7, and gear 18 of the additional shaft 4 connected to the intermediate shaft 3, a gear muta 7 simultaneously engaged with the gear 16 of the slave shaft 2 and gear 12 of the reversing shaft 5, On one of the gears 10 of the drive shaft I has a toothed end 19, which is engaged with gear 14.

On the reversing shaft 5, the planetary carrier was rigidly mounted. Satellite 20 is mounted on the carrier 20, simultaneously meshed with the epicyclic 22 and with the sun 23 gears. In this case, the epicyclic gear 22 is made integral with the gear 14 or is connected to it, and salt and

Gear 23 is associated with a brake T (box body) of FIG. I or sun gear 23 is integral with or connected to gear 1A, and epicyclic gear 22 is connected to brake T, (box body) of FIG. 2

Transmission works as follows.

The rotation from the engine crankshaft is transmitted to the drive shaft 1. Gears 10, freely seated on the drive shaft I, alternately turn on switching devices 6, for example synchronizers, and transfer torque to the intermediate shaft 3. It is necessary to engage gears 18, 16 and 17, 15 with gear clutch 7, respectively, while the intermediate shaft 3 is connected to gear 18 and 17 of gear clutch 7. Gear sleeves 8 and 9 are then turned off.

To obtain a lower working range of forward and reverse gears, it is necessary to use gear couplings 9 and 8 to turn gears 19, 14 and 13, 15 for forward gears and gears 19, 14 and 12, 18, 16 for reverse gear. When this gear clutch 7 is turned off.

To obtain the technological range of forward and reverse gears, it is necessary to turn on gears 13, 15 and 12, 18, 16 using a gear coupling 8. The gear couplings 9 and 7 are turned off, the sun gear 23 is braked (Fig. 1). In this case, the torque from the drive shaft 1 is transmitted to the driven shaft 2 through gears 19, 14 and 22, 23, satellites 21 and drove 20, gears 13, 15 - forward gear, and through gears

19.14 and 22, 23 satellites 21 and drove

20, gears 12, 18, 16 - reverse gear For obtaining technological

A lower range of forward and reverse gears with higher ratios (lower speeds) must be braked on the epicyclic gear 22 (Fig. 2), then the torque from the drive shaft 1 to the driven shaft 2 is transmitted through gears 19, 14 and 23, 22 satellites 21, and drove 20, gears 13, 13 - forward, and through gears 19, 14 and 23, 2 satellites 21, and

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, with

five

Dilos 20, gears 12, 18, 16 reverse.

Planetary range, made with braked gear 22, ncjSBonneT to compact the distribution of gear ratios of the technological range. When implementing the planetary row with the braked gear 22, it is possible to expand the range of gear ratios, i.e. get lower speeds on the tractor. The choice of a planetary row with deceleration of the sun or ring gear will be determined by the machines with which the tractor will be aggregated taking into account the high-quality implementation of the technological process.

Claims (1)

Invention Formula The gearbox mainly for a tractor, containing coaxial drive and driven shafts, parallel reversing and intermediate shafts parallel to them, gears of permanent gearing mounted on the drive and intermediate shafts and connected to the drive shaft by means of switching devices located on the drive shaft, gears mounted on the reversing the shaft is free and connected to it by means of a gear coupling, the gears are rigidly mounted on the driven shaft, one of them is simultaneously engaged with the gear mounted on the reversing shaft, and gear, freely mounted on the intermediate shaft and connected to this shaft by means of a gear coupling, gear of the additional shaft, connected to the intermediate shaft by a gear coupling, simultaneously engaged with another gear of the driven shaft and with the gear wheel of the reversing shaft, and the reverse shaft kinematically associated with the drive shaft, characterized in that, in order to improve performance by expanding the kinematic range, it is equipped with a planetary gear, the carrier of which is fixed to the reversing The shaft, one of the remaining links of which is connected with the brake, and the other link is connected to the gear wheel of the reversing shaft, which is engaged with an additional gear ring mounted on the gear drive shaft. 70 G9 J- i /// y Pll 1 "-I I T  I I-. I aiJ-Jn Lr -P -  i ,four. "Cfjue.2 f w fS J6 Pll 1 "-I  T  I  Lr }  i  "Jue.2 f w