CN2512947Y

CN2512947Y - Speed reducer

Info

Publication number: CN2512947Y
Application number: CN 01261790
Authority: CN
Inventors: 和进生
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-26
Filing date: 2001-09-26
Publication date: 2002-09-25
Anticipated expiration: 2011-09-26

Abstract

The utility model discloses a speed reducer, in particular to a reducer which has big driving rate. The utility model comprises an inputting axis, an outputting axis, an inner gear and an outer gear, a cross wheel plate which is provided with a convex tendon or groove which has two faces mutually formed 90 DEG is respectively cooperated and connected with the groove or convex tendon on the rear end surface of the outputting axis and the groove or tendon on the front end surface of the outer gear. The utility model has simple structure, small cubage, low cost and high efficiency and can be widely applicable to the mechanic driving devices.

Description

A kind of retarder

This model utility relates to the big retarder of a kind of retarder, particularly velocity ratio.

The present big retarder of velocity ratio, single-stage planetary retarder or the multi-stage speed reducers of adopting more, this class retarder volume is bigger, each is crucial, and the component processing required precision is higher in addition, corresponding cost is higher, export the high pulling torque big speed ratio, can only realize by increasing gear transmission progression, assemble maintenance difficult because volume increases in addition, cause its working efficiency on the low side.

The purpose of this utility model just is to provide a kind of: it is simple to connect structure, and volume is little, and can export high pulling torque big speed ratio, new type speed reducer that cost is low as required.

The technical solution of the utility model is achieved in that this retarder comprises input shaft, output shaft, internal gear, eccentric bushing etc., be mutually the cross hollow wheel disc of 90 degree convex tendons with a band two sides, with the groove of output shaft ear end face, the groove fit of external gear front end connects respectively.With the convex tendon of output shaft ear end face, the convex tendon of external gear front-end face face, what match connection is the hollow wheel disc of cross that a band two sides is mutually 90 degree grooves.

This model utility is simple in structure, and volume is little, and cost is low, assembles easy to maintenancely, can improve its working efficiency.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the plan view of this model utility;

Fig. 2 is an inside and outside gear transmission schematic diagram shown in Figure 1;

Fig. 3 is a cross wheel disc plan view among Fig. 1;

Fig. 4 is the right elevation of Fig. 3;

Fig. 5 is the left view of Fig. 3;

As shown in the figure: by output shaft 1, the hollow wheel disc 2 of cross, internal gear 3, external gear 4, output shaft 5, key 6, eccentric bushing 7, by cartridge screw 8, form.It designs according to the harmonic speed reducer principle, has only adopted a fixing internal gear and a star-wheel and has finished the purpose of slowing down, and velocity ratio is maximum can nearly 10000.Its transmission principle is 3 for internal gear, and 4 for being contained in the external gear inside 3 internal gears.When the gear teeth of the external gear 4 of the inside during along the internal tooth relative movement of outside the center of circle O of (seeing arrow 1) external gear 4 whenever circle around the center of circle of internal gear 3 O, its external gear 4 itself is crossed a tooth (seeing arrow) along the axis opposite spin of self just, at external gear 4 centers of the inside when loading onto an eccentric shaft (input shaft) and drive external gear and rotate, its external gear 4 so just reaches into a retarder around the rotation of slowing down in the other direction of self axis.In movement process, because external gear of the inside and the revolution of the axis of retarder exist a throw of eccentric, so the external gear 4 during transmission not only will be done the motion of curved shaft type, and around self axis opposite spin, therefore just need the angular velocity ratio output mechanism such as off-centre that can transmit between the parallel axes, i.e. a double universal coupling.If the output shaft ear end face is designed to convex tendon, the external gear front-end face is designed to convex tendon, so, match with it that what be connected is to have the two sides to be mutually the cross of 90 degree grooves, hollow wheel disc just can design and manufacture under different purposes or the occasion the big retarder of use velocity ratio.

Having adopted the hollow wheel disc of " ten " font is the double Hooke's joint coupling, and output shaft is again the preceding support of input shaft, and working portion has only several formations, make the reducer structure compactness, performance rationally, has not simply had technical problem in the whole manufacturing process, installation and maintenance are easy, and cost reduces.Two, during retarder operation " ten " word hollow disc at the moving circle of input shaft revolution, with respect to external gear (front-end face has groove or convex tendon), output shaft (back segment is worn fluted or convex tendon) slide two throw of eccentric (because of throw of eccentric very little), so the relative movement linear velocity is very low, the effect of having played " two universal " makes transmission rationally.

" ten " font hollow discs that the band two sides is mutually 90 degree convex tendons or grooves are designed to go out more than 1,5～2 times greatly and through heat treatment process, do not have the problem of transmission of torque than the key that transmits identical torque or keyway size.The structure of this retarder can be widely applied in the mechanical transmission.

Claims

1. retarder, there are output shaft (1), input shaft (5), internal gear (3), external gear (4), eccentric bushing (7) to form, it is characterized in that: adopt hollow wheel discs of ten sub-shapes (2) that a band two sides is mutually 90 degree convex tendons respectively with the groove of output shaft (1) ear end face, external gear (4) front-end face groove fit connects.

2. according to the described a kind of retarder of claim 1, it is characterized in that: output shaft (1) ear end face is a convex tendon, and external gear (4) front-end face is a convex tendon, and what match connection is the hollow wheel disc of ten sub-shapes that a band two sides is mutually 90 degree grooves.