SU920302A2 - Gear box - Google Patents

Description

(54) GEARBOX

one.:

The invention relates to mechanical engineering, in particular to gear transmissions.

According to the main author. St. No. 634О47 known gearbox, containing the leading, driven and intermediate shafts with mounted blocks of gears and two gears reverse, one of which is permanently coupled with one of the blocks, and the other movably in the direction of the axes of the blocks ij

However, this gearbox is characterized by an insufficient number of gears.

The purpose of the invention. An increase in the number of gear stages of the forward drive.

The delight is achieved by the fact that in the gearbox the drive shaft is made telescopic with a length that allows movement of its toothed movable wheel. Reverse stroke to engage with each of the toothed gear of the intermediate shaft.

The drawing shows a kinematic diagram of the gearbox.

The gearbox consists of a housing 1, a drive shaft 2 with a telescopic link 3, on which a reverse wheel 4 is seated on the splines, an intermediate axis 5 with round flanges 6-10 fixedly mounted on it, on which gear units connected together are freely seated 11, 12 and 13; 14, 15 and 16; 17, 118 and 19; 20, 21 and 22; 23 and 24 of the driven shaft 25 with a gear wheel 26 having the ability to move along the splines along the latter, and a back gear wheel 27 with internal teeth having the possibility of free rotation on a fixed round (}) lance 28. The gear wheel 27 is permanently coupled to the gear wheel 11.

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Claims (1)

Telescopic link 3 is installed in such a way that its left part has the ability to move along the drive shaft on the slots, and the right. end with gear, half coupling 29 - along the driven shaft 25. Gear gear 26 has gear half coupling 3 having the ability to be connected with gear half coupling 29. Gear blocks 11, 12 and 13; 14, 15 and 16; 17, 18 and 19; 2, 21 and 22; 23, 24 and 25 are mounted on the intermediate axle 5 in such a way that the rims of the gear: wheels 12, 15, .18, 21 to 24 form a straight line parallel to the driven shaft 25. The gearbox operates as follows. During the forward stroke, the gear 4 is connected to the gear 12. The torque from the drive shaft 2 through the telescopic link 3 is then transmitted, the gears 2 and 12 are transmitted to the entire gear block of the intermediate axis 5. The gear is connected to the gear 26 with the gears 24 , 21, 18, and 15 receive four gear stages. The first (straight) stage is obtained when the gear half couplings 29 and 30 are connected, respectively, of the telescopic link 3 and the gear wheel 26. In order to increase the number of speed steps, it is necessary to connect the gear wheel 4 with the gear wheel 15. Then wheel 2 with gear wheels 24, 21 and 18, receive an additional three gear stages. If the gear wheel 4 is connected to the gear wheel, then an additional two gear stages can be obtained by connecting the gear wheel 26 in series with the gear wheels 24 and 21. The last (eleventh) stage is obtained when the gear wheels 4 and 21, 24 and 26 are connected. allows receive four stages of reverse gears. To do this, connect gears 4 and 27, and then gears 26 and 24 in series; 26 and 21; 26 and 18; 26 and 15. The proposed gearbox allows an increase in the number of gears in forward gears, for example, from 5 to 11, with a constant number of gears. This, in turn, expands the use of such a gearbox while maintaining its optimum weight and dimensions. Formula of invention Transmission by author St. No. 634047, which means that, in order to increase the number of gears in forward gears, the drive shaft is made telescopic with a length that moves its toothed movable reverse gear to engage with each of the toothed gears shaft. Sources of information taken into account during experimentation 1. USSR author's certificate No. 634О47, cl. F 16 H 3 / 2O, 1976 (prototype). - L-ze 7 ± o gt PMN 4 V. Jf nineteen 1b V / / 518