CN2319628Y

CN2319628Y - Duplex central wheel reversible wheel system

Info

Publication number: CN2319628Y
Application number: CN 98212190
Authority: CN
Inventors: 胡鲁平; 胡敏平
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-10
Filing date: 1998-04-10
Publication date: 1999-05-19
Anticipated expiration: 2008-04-10

Abstract

The utility model discloses a duplex central wheel reversible wheel system. The utility model is composed of two NGW type reversible wheel systems which are assembled with each other. An external gear and an internal gear of the utility model are duplex wheels, the two NGW type reversible wheel systems are formed into a new reversible wheel system by central wheels of the two duplex wheels, and a rotating arm of the utility model can be a fixing element or a controllable moving element. The utility model has the advantages of big variable-speed ratio, high efficiency, small volume, light weight, compact structure, big transmitting power, good structural strength, long service life, etc. The utility model can be singly used a speed reducer, and the utility model can be used as a central mechanism of a speed variator. The utility model is suitable for all mechanical transmission systems. The utility model also has the advantages of wide application prospect and wide development value.

Description

Duplex central gear epicyclic gear train

The utility model relates to a kind of novel epicyclic gear train, relates in particular to a kind of duplex central gear differential planetary gear train.

Existing epicyclic gear train kind is a lot, and better performances quite a few is as WW type, NW type, NGW type, series connection NGW type.Disclosed in the Chinese patent communique " externally toothed planetary gear box with double inputs " (notification number is CN1038503A), its speed changer central authority promptly are to adopt WW type epicyclic gear train.Though the gear ratio that these epicyclic gear trains have is very big, efficient is very low, and through-put power is little, poor performance, and WW type epicyclic gear train just belongs to this type of.All the other several epicyclic gear train efficient are higher, but gear ratio is less, volume is bigger.

The purpose of this utility model is: overcome the above-mentioned defective of prior art, provide that a kind of gear ratio is bigger, efficient is very high, through-put power is big but volume is little, in light weight, the novel epicyclic gear train of long service life, stable performance.

The purpose of this utility model realizes by following scheme: the utility model constitutes its central gear by two NGW type epicyclic gear trains and is the double linked wheel that correspondence links.Its planet wheel is the simply connected wheel.Its pivoted arm can be fixed block or controlled movable part, and connects with second driving link.

The utility model compared with prior art has following remarkable advantage:

(1) gear ratio is very big.In aforesaid several typical epicyclic gear train, the gear ratio maximum of WW type and gear ratio of the present invention is bigger more than five times than it.And slewing range is wider, can be from several times to up to ten thousand times.(2) efficient height, the present invention is combined by two high efficiency epicyclic gear trains, and efficient is close with the NGW type.(3) little, in light weight, the compact structure of volume.Because it is its gear ratio is very big, inevitable little in identical gear ratio lower volume.(4) through-put power is big, and structural strength is good, long service life, and good manufacturability, and can long time continuous working.Owing to adopt the simply connected planet wheel, these performances are identical with NGW type epicyclic gear train and be better than adopting the NW type and the WW type train of double-planetary gear.(5) can do retarder usefulness separately, again can be as the central authority of speed changer.

Accompanying drawing 1: be transmission principle figure of the present utility model.

Accompanying drawing 2: be embodiment's 1 transmission sketch as retarder.

Accompanying drawing 3: be transmission sketch as the embodiment 2 of speed changer central authority.

Below the contrast accompanying drawing is elaborated to the utility model in conjunction with the embodiments.

The utility model comprise two respectively by

gear

1,2,3 and pivoted arm 7 and gear 1 ', 6,3 ' and the NGW type epicyclic gear train that constitutes of pivoted arm 8.Its external tooth central gear 1 and 1 ' and central wheel of internal teeth 3 and 3 ' be double linked wheel.

Embodiment 1: the utility model is made retarder

In the present embodiment, pivoted arm 7 is a fixed block, makes

train

1,2,3 become fixed shaft gear train, and 8 of pivoted arms are output member, its transmission principle is: when gear 1,1 ' when clockwise rotating, internal gear 3 inhours are rotated, internal tooth 3 ' also return hour hands to rotate, and wheel 3 becomes the output member of fixed shaft gear train, its rotation pass to the wheel 3 ', wheel 3 ' become train 1 ', 3 ', 6 second input component, wheel 3 ' return hour hands rotate with wheel 1 ' to move through planet wheel 6 synthetic, make pivoted arm 8 produce slower rotation.

Embodiment 2: the central authority of making speed changer

The pivoted arm 7 of present embodiment is an external gear, two inputs I, II,

gear

7 and 9 engagements of the second input component gear are arranged and with rotation, the STATEMENT OF FEDERALLY SPONSORED wheel 3 ' again of gear 1 and take turns 1 ' the motion secondary synthesize the motion of pivoted arm 8, the different motion combination of input I and II makes pivoted arm 8 produce different output speeds.

Claims

1, a kind of duplex central gear epicyclic gear train, it is made up of two NGW epicyclic gear trains, it is characterized in that: external tooth central gear (1) and (1 '), central wheel of internal teeth (3) and (3 ') are double linked wheel.

2, epicyclic gear train according to claim 1 is characterized in that: pivoted arm (7) is a fixed block.

3, according to claim 1 fast epicyclic gear train, it is characterized in that: pivoted arm (7) is controlled movable part, and with second input driving link gear (9) engagement.