DE1921479B2 - TWO-STAGE REVOLVING GEAR GEAR - Google Patents

Description

These limits of the area of application are based on 65 central gears, which are designed twice, whereby on constructive conditions. The transmission, the inner central wheel and the fixed outer one ratio is essentially determined by the central wheel are floating. This is supposed to Ratio of the diameter of the inner central in connection with a counter-rotating spiral

3 4

Toothing of all pairs of wheels can be achieved that the wheel practically corresponds to the length of the planetary gear blocks

all reaction forces within the gearbox correspond, but also the gearing

actively compensate and thereby a correct equalization of the middle, unused part of the inner one

moderate downforce, as z. B. can be omitted for counter-rotating central wheel. This then arises

rende aircraft propeller is necessary. 5 to a certain extent a divided inner central wheel, es

The transferable power is in this known, however, alternately opposed by this Gearbox not increased, and achieved in the sense mediated directional arrangement of the planetary gear blocks

this known "gearbox to the person skilled in the art also does not mean that all blocks can be executed in the same way and thus

Suggestion. can be manufactured cheaper.

In contrast, the invention is based on the following: If space-saving plain bearings for the bearing are known that planetary gear blocks are used with pianos arranged in two planes, then in central gear blocks, the smaller wheels of which are advantageously in engagement with the central gear on the outside of the planetary gear blocks, be arranged in connection directed. With an appropriately double-toothed inner one, the transferable power of the gear 15 planetary gear blocks results in different lengths of the individual central gears, but with this arrangement it is considerably increased and, apart from one, can even be doubled particularly easily if the two the assembly of the outer central wheel, a somewhat staggered group of planetary gears with more favorable, that is to say narrower and torsionally intersecting circumferential circles, the more rigid execution of the inner central wheel is arranged. In this way it becomes possible to have every advantage.

Toothing of the inner central gear the maximum The invention is based on hand son

Assign the number of planet gears, which are still freely described in more detail embodiments. It shows

can turn past each other. This increases F i g. 1 a section in the axial direction ^J ines um-

the number of planetary gear blocks and thus the Laufridergetriebes according to the invention, the

transmittable power of the transmission without the 25 intersection from FIGS. 2 or 3 can be seen.

Gear ratio experience an influence F i g. 2 shows a cross section through the transmission

has, and the decisive advantage is achieved that measured Fig. 1. along the line shown in FIG

the transmission ratio determining through 11-11.

knife of the planetary gears chosen to be much larger F i g. 3 can be a cross-section through the gearbox than in the known Umlar'- 30 dimension Fig. 1 along the line shown in Fig. 1 wheel gear type with the same transferable power HI-III,

is maximally permissible or that with a given F i g. 4 shows a cross section (schematic) through a

Gear ratio the number of the transfer Um.aufräder gear according to the invention with six

planetary gear blocks that determine the power output, planetary gear blocks,

sizes can be. The need for a grain 35 F i g. 5 a schematic representation of a circulating prism between the transmission ratio and the gear transmission according to the invention with counter-transferable power is therefore no longer in the set-oriented planetary gear blocks.
previous scope given. F i g. 6 in a schematic representation of a rotation-So can with the known transmission types with gear transmission according to the invention with the same direction L. R. three planetary gear blocks as maximum permissible planetary gear blocks.

The total transmission ratio 35: 1 can hardly be overlooked. while in a gear transmission according to the invention, a high-speed shaft I has running gear transmission ratios of 50: 1, a slow-speed shaft 2 and a stationary shaft, and more are possible. Since, in addition, the outer central gear 4 supported on the housing 3, the number of planetary gear blocks z. B. from three to 45 The in F i g. 1 can be increased to four or even to six in section, a block consisting in detail of a larger gear according to the invention is particularly suitable. Planet gear 7 or 10 and a smaller planet with high power to be transmitted and the same gear 6 or 9, which are coaxially non-rotatably combined with a high gear ratio used at the same time. The smaller wheels 6 and 9 can be. 50 at the same time as planetary axles 5 and 8, respectively. The number of planetary gear blocks does not need to be formed. But it is also possible for these wheels 6 to be exclusively four or six, sonaern it 'vw. 9 together with the larger planet gears can of course also have an odd number. ?. B. sit on your own planetary axis,
five can be chosen. However, this is a more theoretical case. In practice, one is supported by contact blocks with the help of roller bearings in the planetary structure and because of the load distributors 11 . Rolling bearings generally have the disadvantage, preferably for an even number of planetary gears, that they take up a relatively large amount of space. The allocation of the planetary gear blocks to one another number of blocks in the planetary carrier 11 can be done in the most varied of ways. Use still possible if the planetary gear blocks are alternately used to support the blocks, e.g. B. rolling bearings, selnd are arranged in opposite directions,
then it is untei others for reasons of constructive The larger planet gears, z. B. 7 and 10, tive accommodation of the relatively large amount of space is generally required via the shaft 1 by means of a corresponding roller bearing that the planetary inner central gear 12 is driven. In the case of the Entradblockblocks alternately oppositely directed 65 oppositely directed arrangement of the planets are arranged. In this case, the base of the inner central gear or - as shown in FIG. 1 Hen planet gears meshing inner central is shown - a divided inner central gear

5 6

12, whereby the division arises from the fact that the is not limited to four or six, but can The middle, unused part of the inner central wheel may be increased even further, provided that is not provided with a toothing. The koninnere about the storage of the individual planetary gear blocks Central wheel 12 driven larger tarpaulin is structurally still possible.

ten wheels, e.g. B. 7 and 10, are based on their to- 5 Are for mounting the planetary gear blocks z. B.

associated smaller planetary gears, e.g. B. 6 and 9, slide bearings are provided opposite the rolling bearings

take up less space on the fixed diameter connected to the housing,

outer central gear 4 and thereby leave the then the planetary gear blocks can be rectified

Orbital movement of the planetary gear blocks. This be rearranged. In this arrangement, which is shown in FIG. 6th

running movement is shown in principle via the planetary carrier 11 and io, can be compared to the

of the shaft 2 connected to it. alternating oppositely directed arrangement

The formation of the planet carrier can of course be the planetary gear blocks, as this is the opposite

take place in any way, but it is from the development in F i g. 5 again shown in principle

For reasons of strength it makes sense, the 2: ur is available, the inner central wheel 20 (Fig. 6) more favorable, the

The structural space in the gearbox should be designed to be narrower. Furthermore is

to use. F i g. 2 and 3 show the webs of the planet - also the assembly of the outer central gear against

trägersll in cross section. Provided the larger pia over the transmission type shown in Fig. 5 easier

Netenräder can still be carried out freely on the planet carrier webs, since in F i g. 6 all planet gears 21 on

Can rotate past, each other one side of the outer central wheel 22 is of course also arranged

Shape possible. ao are.

The in the F i g. 1 to 3 epicyclic gears shown - However, this type of gearbox must have the same gear has four planetary gear blocks. Fig. 4 shows directed planetary gear blocks that on the other hand, another embodiment example, in which usually the axes of every second planetary gear six planetary gear blocks are provided. Three blocks in relation to the remaining planet larger planet gears, namely 13, 14 and 15, are 95 wheel blocks are formed longer, so that with one Arranged in the plane of the drawing, while three possible gel bending of the longer axles; feit in a second level behind that in the drawing, which then the limit of the achievement shown cross-sectional plane arranged ability in a gearbox with rectified are. Despite the large number of larger planetary gear blocks, it is more likely to be calibrated than this wheels are all planetary gears in mesh with a comparable gear with opposite with the inner central gear 19. The number of arranged planetary gear blocks and the same larger axles Planet gears or planet gear blocks would be the case for a long time.

For this purpose 2 sheets of drawings

2799

Claims (1)

rades to the diameter of the larger planetary Jj claims: iü 1. Two-stage epicyclic gear with min- ration, the data ctePlanetenradWocks ^ die, ewe *, from S JJJ ™ ™ £ Αΐι requires the transmission of a larger planet and a non-rotatable *? ^ J ^^^ g as large as possible a3 small planet gear connected to it be euier nonen ¹ Cr "*" ⁶ .. .. ^ _1n -I ₁ ^ _n . λ ^ »ΙΙ · ~ £: stand, whereby the size / s planet gears of» emade £ wed Ae through to gear planetary gear blocks with the inner central gear maximally ^ and the smaller planet gears with the external constant ren central wheel of the transmission are in mesh, with each other in the. ^^ f ^ ff ^^^ characterized in that since every tooth has a certain load limit, i ^ zL ^ W ^ äiiiJi must to ^ Sg ^^ aS'S ^ 'S Serration is provided and the larger ^ planet-speaking more ^ * ™ * ™ * ^e "^ I ΐ wheels in two axially spaced .5 then the total load antedig to each other with each other withstand the requirements J ™ ^
intersecting circumferential circles are arranged. ratio and for eme g wherein each one of the two groups dits.r is unlike because erhaltn.s each other with increasing toothings of the inner central wheel assigned By measuring d, e number of planets _{is net} ^B 20 wheels, sub- on the inner central ':. Transmission according to claim 1, with roller bearings, can be brought smaller and smaller. The previous transmission for the planetary gear blocks. thus always a compromise between net that the larger planet gears (7) represent both these opposing requirements. the ever Groups on opposite sides of the trains - more in the right depending on the application smaller planetary gears (6) arranged 35 device to a larger (.transmission ratio or in and all planetary gear blocks are designed to be aligned with one another in the same way as a higher transferable power are (Fig 5) can be placed. Usually no more than 3. Transmission according to claim 1, with plain bearings three to four planetary gears around an inner central wheel for the planetary gear blocks, thereby marked-arranged. net that the larger 1 Ianete. "wheels (21) for 30 With the invention, a planetary gear system to both groups on the same side of the created züge- are eordnet to _b in which no reduction in the hearing smaller planet gears, gear ratio of the transmittable power wherein the axial distance between the larger one is increased: the solution is given in the characterizing of the and the smaller planet gear in the one claim 1. Group by a little more than a wheel width greater than 35. The invention is not only applicable to one than the other group. Planetary gear of the normal TV, in which z. B. the outer central wheel is fixed. Also, of course, is a split gearbox all wheels revolve, z. B. in the version 40 as a summation or as a differential gear possible and also a version as a so-called stationary gear, in which the planet carrier is held in place. Epicyclic gear after the starting point of th is and the outer central gear rotates.
Invention are already available in various types. It is true that the USA patent specification can). So shows z. B. the AWF-Getriebeblatt 606 B 45 2 700 311 a planetary gear with six Planeein so-called Wolfrom gear, which is known to the terradblocks, in which the inner central starting point corresponds to the invention and leJigrad is provided with double teeth Hch still for the purpose of changing the output and the larger planetary gears in two in axle speed In addition, a second, controllable group that is at a distance from one another the larger planet gears of the planetary gear blocks 50 of three gears each of this double toothing having engaged outer central gear. are assigned without, however, the The epicyclic gears after the starting point circumferential circles of these two groups of planetary end Invention have overlap with such gear wheels. With this well-known gear Versions in which instead of the planetary gear, two coaxial blocking simple planetary gears are available via a drive shaft, the 55 drive shafts are driven in opposite directions by the Andirekit connected to both the inner and the drive shaft with the inner central gear outer central gear are in mesh, the advantage is that the planetary gear blocks with the smaller gears a larger gear ratio. Nevertheless, a first, fixed, outer central gear meshes with one another So far their scope has been limited, men and the two output shafts on the web of the 60 planetary gear blocks or a second, with the Stungen must be transmitted, as is the case with larger gears of the planetary gear blocks in mesh For example, when high-performance, high-speed stationary outer central gear are connected. Turbines are the case, the speed of which is usually all power-transmitting parts, that is, the inner must be considerably squat. Central gear, the planetary blocks and the outer ones