Gear, coaxially with multi-threaded transfer

 

(57) Abstract:

Usage: engineering. The inventive gear coaxially with the threaded transmission comprises a drive shaft with pinion, output shafts with opposite rotation, parasitic and idler. The last set alternating in the circumferential direction between the two groups. Idler one group dvuhventsovye, another group odnovintovye. The latter is installed in the gap between the crowns dvuhventsovye intermediate gear overlap. Idler groups interconnected by torsion. Parasitic gear installed in the circumferential direction on the side of the intermediate gears and connected with them. 2 C.p. f-crystals, 4 Il.

The invention relates to reductionstrategy and can be used for power transmission from the drive shaft through the reduction gear on two coaxial output shafts.

Known coaxial threaded reducer differential type with two output shafts, rotating during operation in opposite directions [1]

The drawbacks of such a differential gear unit are:

the inability to obtain permanent, equal or different numbers about the new transmitted power via output shafts;

reduced reliability and durability of the differential gear in comparison with the work of a simple gear due to high dynamic loads and uneven loading of the satellites.

Known multi-threaded reducer dedifferentiated type for two coaxial counter-rotating screws [2] comprising a housing, a drive shaft with a pinion, three series of intermediate gears mounted on three gears on each shaft, and one row of parasitic gears mounted radially between the intermediate gears of the same number and a driven toothed wheel. The intermediate gear one series geared with the pinion, idler another series with the driven toothed wheel connected to the inner output shaft and screw, and an intermediate gear of the third row with an idle gear, which is meshed with the second driven gear wheel connected to the outer output shaft and the rear screw.

The drawbacks of such gear are:

the limit obtained numerical values of the transmission ratio gears on each output shaft and their speeds of rotation due to the installation promezhutochnoi with the pinion of the drive shaft;

reduced reliability and durability multi-threaded gear in comparison with the work of a simple gear due to uneven loading of intermediate gears each row;

limited increase in the carrying capacity for the transmission of power by setting the number of intermediate gears around the pinion shaft;

large transverse dimensions and weight of the gearbox due to the installation of the parasitic gears radially between the intermediate gear and a driven gear connected with the output shaft.

The aim of the invention is the extension of the kinematic capabilities by providing equal or different speeds of rotation, the transmission of the same or different capacities through each output shaft, increasing the carrying capacity for the transmission of power through the installation of an increased number of intermediate gears, improving reliability and durability by reducing the uneven loading of the intermediate gears in each row and weight reduction gearbox by reducing the transverse dimensions of the gear.

This goal is achieved by the fact that the intermediate gear in each row is set alternate with an equal or different number of teeth; geared with a pinion intermediate gear one group performed dvuhventsovye, and the other group odnovintovye that are installed in the gap between the crowns dvuhventsovye gears overlap;

every two idler gears two rows of transmission on each output shaft are connected by torsion;

parasitic gear installed in the circumferential direction on the side of the intermediate gears and connected with them.

In Fig. 1 shows a coaxial gearbox with multi-threaded transfer with two output shafts, rotating in different directions, longitudinal section; Fig. 2 cross section b-B in Fig. 1; Fig. 3 cross-section b-b In Fig. 1; Fig. 4 cross section G-G in Fig. 1.

The gearbox includes a housing 1 consisting of a front leg 2, from the Central part 3 with the fixed support 4, with removable bearings 5, 6 and 7, the drive shaft 8 with the pinion 9, the outer 10 and inner 11 output shafts, dvuhventsovye intermediate gear 12, consisting of the left 13 and right 14 teeth, crowns, and odnovintovye intermediate gear 15, meshed with the pinion 9, the intermediate gear 16 gear to the outer output shaft 10, United torsion 17 dvuhventsovye elapsed the output shaft 10, the intermediate gear 20 gear to the inner output shaft 11, connected by a torsion 21 with the intermediate gears 15 and meshed with an idle gear 22, which is meshed with a driven gear wheel 23, United through a splined coupling 24 with the inner output shaft 11, the bearings 25-28 intermediate and parasitic gears and bearings 29 and 30 setting the output shafts.

To extend the kinematic capabilities of the intermediate gear set alternating in the circumferential direction by two groups: the first group of intermediate gears 12 and 16; the second group of intermediate gears 15 and 20.

In the power flow during operation is separated from the pinion 9 on the two streams, the first of which is transmitted through the intermediate gear 12 and 16 of the first group and then through the slave gear wheel 18 on the outer output shaft 10, and the second power stream is transmitted through the intermediate gear 15 and 20, then through the parasitic gear 22 and through the slave gear wheel 23 on the inner output shaft 11.

In each group have the same number of intermediate gears 12 and 16, 15 and 20 (4 pieces), resulting transmitted power during operation, che is in said intermediate gears in each group. At the same time transmitted power through the output shaft will be different.

The number of teeth of the intermediate gears between groups 12 and 15, 16 and 20 are equal to each other, which provides the same ratio to each branch of the transmission and the number of turns of the inner and outer output shafts.

When different numbers of teeth of the intermediate gears in each group ratio of each branch of the transmission and the number of revolutions of the output shaft will be different.

To increase the carrying capacity of the gear transmission installed capacity increased the number of intermediate gears in each row by performing meshed with the pinion 9 of the intermediate gear 12 of the first group dvuhventsovye with toothed rims 13 and 14, and the intermediate gear 15 of the second group odnovintovye and due to the installation of the toothed crowns gear 15 in the gap between the gear rims 13 and 14 of the gear 12 with overlapping.

To improve the reliability and durability every two intermediate gear on each output shaft 12 and 16, 15 and 20 are interconnected by a torsion 17 and 21, which reduces the uneven loading of the intermediate gears in each row while working for the accounts to change the direction of rotation of the inner output shaft 11, located in the circumferential direction on the side of the intermediate gears 20 and meshed with them, which helped to reduce the transverse dimensions of the gears and gear in General.

The proposed solution allows you to create new, high-capacity and high-speed coaxial gearboxes with multi-threaded aplanetary transfer with two output shafts with extended kinematic capabilities by obtaining the same or different numbers of revolutions of the output shaft of selection of any direction of rotation, the transmission of the same or different capacities through each output shaft, with high load capacity for the transmission of power through the installation of an increased number of intermediate gears, i.e., by increasing multithreading transmission, with increased reliability and durability by reducing uneven loading of the intermediate gears in each row and with a reduced transverse dimensions of the gearbox by reducing the transverse dimensions of the gearing.

1. GEAR, COAXIALLY WITH multi-THREADED TRANSFER, comprising a housing, a drive shaft with a pinion, two coaxial with multidirectional rotation of the output shaft with the driven toothed wheel of Katerini to interact with the latest and pinion and parasitic gear, through which one of the output shafts associated with the respective intermediate gears, characterized in that, with the aim of expanding the kinematic capabilities of the intermediate gear set alternating in the circumferential direction of the two groups, which are kinematically interconnected along the length of the torsion and are in groups equal or different number of intermediate gears with equal or different number of teeth.

2. The gearbox under item 1, characterized in that the parasitic gear in the circumferential direction is placed on the side of the intermediate gears associated with them.

3. The gearbox under item 1, characterized in that when used in one of the groups dvuhventsovye intermediate gears for engagement with pinion response to him odnopozova intermediate gear of the second group are installed in the gap between the crowns dvuhvekovoi intermediate gear overlap.

 

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