CN203023402U

CN203023402U - Planetary gearbox

Info

Publication number: CN203023402U
Application number: CN 201220724273
Authority: CN
Inventors: 孙国平; 郁育
Original assignee: WUXI TIANYOU LONGXUN MACHINERY PLANT
Current assignee: WUXI TIANYOU LONGXUN MACHINERY PLANT
Priority date: 2012-12-25
Filing date: 2012-12-25
Publication date: 2013-06-26
Anticipated expiration: 2022-12-25

Abstract

The utility model discloses a planetary gearbox which comprises three planet gears, a planet carrier shell, a sun wheel axle, a planet carrier output shaft and a clearance adjusting device, wherein a shell gear is arranged on an inner ring of the planet carrier shell; the clearance adjusting device is arranged inside the planet carrier shell and spaced from the planet carrier shell, and comprises a clearance adjusting worm gear and a clearance adjusting worm; an inner ring of the clearance adjusting worm gear and the three planet gears are in meshed connection; and the clearance adjusting worm is arranged on an outer ring of the clearance adjusting worm gear. The planetary gearbox has the beneficial effects that when a clearance is formed between the planet gears and the shell gear due to wear, only the clearance adjusting worm is required to be rotated, and the clearance can be eliminated to enable the planet gears to be tightly meshed with the shell gear, so that hidden danger is removed, and the service life of the planetary gearbox is prolonged.

Description

A kind of epicyclic gearbox

Technical field

The utility model relates to a kind of epicyclic gearbox.

Background technique

Epicyclic gearbox is that the planet speed reducer is again gear-box, gearbox, and its structure is a plurality of planetary pinions around the mechanism that a sun gear rotates, and is also that transmission speed ratio is reduced, simultaneously again with the mechanism of the proportional increase of motor torsion, use very extensively, coordinate with motor at first, except being used for Miniature speed reducing motor, also be used for sunshade industry office automation, Smart Home, the production automation, medical apparatus, finance machinery, machine tool feeding mechanism, the fields such as gaming machine.

But the planet wheel of gear-box the inside in use for some time, can produce the gap with shell gear on planet carrier shell inner ring because of wearing and tearing, accurate planet wheel at last just, all unavoidably have wearing and tearing after long-time the use and produce the gap, and this gap will cause the strength of gear teeth and precision all to reduce, and the powder further accelerated wear test again that produces after wearing and tearing, and the gap is increased, noise also becomes greatly, and serious also security incident can occur.

The model utility content

The purpose of this utility model is for a kind of structural stability is provided, can adjusting gear the epicyclic gearbox in gap.

A kind of epicyclic gearbox, comprise planet carrier shell and three planet wheels, also comprise and be arranged on described planet carrier enclosure and with described planet carrier shell, the gap adjusting device of spacing arranged, described gap adjusting device comprises to be transferred the gap worm gear and transfers the gap worm screw, described accent gap worm gear inner ring and described three planet wheels are connected with a joggle, described accent gap worm screw is arranged on the outer ring of described accent gap worm gear and is connected with a joggle with described accent gap worm gear, is provided with the accent lyriform pore on described accent gap worm screw.

In the utility model, the end of described accent gap worm screw is provided with the worm screw shaft-cup.

In the utility model, described accent lyriform pore is the equilateral polygon structure, is preferably the equilateral hexagon structure.

In the utility model, described accent gap worm gear inner ring is gear, and described accent gap worm gear outer ring is worm gear.

The beneficial effect that the utlity model has: when planet wheel and shell gear produce the gap because of wearing and tearing, rotate and transfer the gap worm screw, having driven accent gap worm gear rotates, the rotation of accent gap worm gear has driven again the rotation of planet wheel, the one side that turns to the gear teeth on planet wheel fits tightly with the shell gear and gets final product, eliminate the gap, removed hidden danger, also increased the working life of epicyclic gearbox.

Description of drawings

Fig. 1 is the structural representation of the utility model epicyclic gearbox;

Fig. 2 is the cross-sectional structure schematic diagram of Fig. 1

Fig. 3 is the structural representation of the utility model gap adjusting device;

Fig. 4 is the structural representation of Fig. 3 cross section;

Fig. 5 is for transferring the gap principle schematic.

Embodiment

Below in conjunction with embodiment, the utility model is further described, but protection domain of the present utility model not only is confined to embodiment.

As depicted in figs. 1 and 2, a kind of epicyclic gearbox, comprise planet wheel 4, sun wheel shaft 5, output end cap 6, planet carrier output shaft 7, planet carrier shell 8, input end cap 9 and supporting structure 10, the quantity of planet wheel 4 is 3,9 outsides that are arranged on sun wheel shaft 5 one ends are covered in input, three planet wheels 4 all are arranged on the other end of sun wheel shaft 5, and three planet wheels are centered by sun wheel shaft 5, be evenly distributed on the outside of sun wheel shaft 5, three planet wheels 4 all are connected with a joggle with sun wheel shaft 5, but three planet wheels do not connect each other.Planet carrier shell 8 is arranged on the outside of three planet wheels 4, are connected with planet carrier output shaft with sun wheel shaft 5 respectively and are connected in the two ends of supporting structure 10, output end cap 6 is arranged on the outside of planet carrier output shaft 7, have shell gear 8-1 on planet carrier shell 8 inner rings, shell gear 8-1 and three planet wheels 4 are connected with a joggle.Supporting structure 10 is arranged between sun wheel shaft 5 and planet carrier output shaft 7, plays the fixedly effect of sun wheel shaft 5.

continuation is in conjunction with Fig. 3 and shown in Figure 4, the gap adjusting device of epicyclic gearbox, comprise and transfer gap worm gear 3 and transfer gap worm screw 2, transferring the inner ring of gap worm gear 3 is gear, the outer ring is worm gear, the inner ring of accent gap worm gear 3 and shell gear 8-1 are side by side, be connected with a joggle with three planet wheels 4 simultaneously, although whole gap adjusting device is positioned at the inside of planet carrier shell 8, but between gap adjusting device and planet carrier shell 8, spacing is arranged, transfer gap worm screw 2 to be arranged on the outer ring of transferring gap worm gear 3, transfer gap worm screw 2 also to be connected with a joggle with transferring gap worm gear 3, transfer the end of gap worm screw 2 to be provided with worm screw shaft-cup 1, transfer also to be provided with on gap worm screw 2 and transfer lyriform pore 2-1, transfer lyriform pore 2-1 to transfer gap worm screw 2 for convenient the rotation, transferring lyriform pore 2-1 is an equilateral polygon structure, can be equilateral triangle, square or equilateral hexagon, what the utility model adopted is the equilateral hexagon structure.

after planet wheel 4 and the shell gear 8-1 generation of planet carrier shell 8 are worn and torn and are gapped, can close epicyclic gearbox this moment, allow gear stop operating, then by transferring lyriform pore 2-1, rotate and transfer gap worm screw 2, owing to transferring gap worm screw 2 and transferring gap worm gear 3 to be connected with a joggle, transfer gap worm gear 3 and planet wheel 4 to be connected with a joggle, planet wheel 4 is connected with a joggle with shell gear 8-1, therefore transfer the rotation of gap worm screw 2 can drive 3 rotations of accent gap worm gear, and then drive planet wheel 4 rotates, as shown in Figure 5, until on planet wheel 4, one side of the gear teeth fits tightly with shell gear 8-1, namely completed the work of accent gap, to transfer at last gap worm screw 2 fixing.If the gap again occurs, repeat above step and get final product, transfer gap worm screw 2 clockwise or rotate counterclockwise all feasible.

It should be noted that at last: above embodiment is only in order to illustrate the utility model and the described technological scheme of unrestricted the utility model, therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment, but, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, and all do not break away from technological scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in claim scope of the present utility model.

Claims

1. epicyclic gearbox, comprise planet carrier shell (8) and three planet wheels (4), it is characterized in that, comprise that also to be positioned at described planet carrier shell (8) inner and with described planet carrier shell (8), the gap adjusting device of spacing is arranged, described gap adjusting device comprises to be transferred gap worm gear (3) and transfers gap worm screw (2), described accent gap worm gear (3) inner ring and described three planet wheels (4) are connected with a joggle, described accent gap worm screw (2) is arranged on the outer ring of described accent gap worm gear (3) and is connected with a joggle with the outer ring of described accent gap worm gear (3), be provided with on described accent gap worm screw (2) and transfer lyriform pore (2-1).

2. epicyclic gearbox according to claim 1, is characterized in that, the end of described accent gap worm screw (2) is provided with worm screw shaft-cup (1).

3. epicyclic gearbox according to claim 1, is characterized in that, described accent lyriform pore (2-1) is the equilateral polygon structure.

4. epicyclic gearbox according to claim 3, is characterized in that, described accent lyriform pore (2-1) is the equilateral hexagon structure.

5. epicyclic gearbox according to claim 1, is characterized in that, described accent gap worm gear (3) inner ring is gear, and described accent gap worm gear (3) outer ring is worm gear.