CN201428777Y

CN201428777Y - Stepless planetary speed reducer

Info

Publication number: CN201428777Y
Application number: CN2009201537333U
Authority: CN
Inventors: 陈可来
Original assignee: ZHEJIANG OMITER SPEED REDUCERS MECHANISM CO Ltd
Current assignee: ZHEJIANG OMITER SPEED REDUCERS MECHANISM CO Ltd
Priority date: 2009-05-11
Filing date: 2009-05-11
Publication date: 2010-03-24
Anticipated expiration: 2019-05-11

Abstract

The utility model discloses a stepless planetary speed reducer, which comprises an input shaft (7), an output shaft (9), a pin wheel (13), a cycloid wheel (12) and a second rotary arm (11). The secondrotary arm is connected with the cycloid wheel, and an output shaft is arranged on the second rotary arm. The stepless planetary speed reducer is characterized in that one side of the pin wheel is sequentially equipped with a first rotary arm (6), a constant wheel (5), a press wheel (4) and a belleville spring (8), the belleville spring is sleeved on an input shaft and contacts with the press wheel, planet wheels (3) are arranged on the periphery of the constant wheel and movably contact with the same, each planet wheel is movably arranged on a support (14), one end of each planet wheel far away from the constant wheel is equipped with a cam (2), the planet wheels are in transmission connection with the first rotary arm, and the first rotary arm is in eccentric transmission with the cycloid wheel. The bearing capacity of the speed reducer with the structure is increased because one side of the pin wheel is additionally equipped with a stepless transmission mechanism. Further, the stepless planetary speed reducer is large in transmission ratio range and can realize optional change of transmission ratio only needing to adjust the cams.

Description

The stepless planetary retarder

Technical field

The utility model relates to a kind of speed reducer, particularly be the stepless planetary retarder.

Background technique

The present general involute cylindrical gear Gear Planet Transmission speed reducer that adopts, involute planetary gear gear transmission speed reducer, the cycloid pinwheel planetary gear transmission system speed reducer, their single-stage step-down ratio is all less relatively, realize bigger velocity ratio, just need to adopt the speed reducer of two-stage parallel connection or plural parallel stage, particularly for the cycloid pinwheel planetary gear transmission system speed reducer, be applicable to that generally velocity ratio is greater than 9 situation, as shown in Figure 1, its basic structure is by input shaft 15, output shaft 19, pinwheel 16,

cycloid wheel

17 and 18 pivoted arms are formed, described pivoted arm 18 is connected with cycloid wheel 17, input shaft 15 and output shaft 19 coaxial settings, because the relation of its pinwheel structure, its gear ratio value is odd number, as 9,11,13,15 ... Deng, change its velocity ratio, also only between its odd number, change, velocity ratio to be changed to the ratio of even number or mixed decimal point, can't realize, that is to say, want to change arbitrarily velocity ratio, present cycloid pinwheel planetary gear transmission system speed reducer can't be realized.As seen, present cycloid pinwheel planetary gear transmission system speed reducer, its range of transmission ratio is less, and can't change arbitrarily, can not satisfy the demand in market far away.

The model utility content

In view of the deficiency that background technique exists, the technical problems to be solved in the utility model provides the stepless planetary retarder that a kind of velocity ratio can change arbitrarily.

For this reason, the utility model is realized by the following technical solutions: a kind of stepless planetary retarder, comprise input shaft, output shaft, pinwheel, the cycloid wheel and second pivoted arm, described second pivoted arm is connected with described cycloid wheel, described output shaft is installed on described second pivoted arm, a side that it is characterized in that described pinwheel is provided with first pivoted arm successively, permanent wheel and butterfly spring, described butterfly spring is enclosed within on the input shaft and with perseverance wheel wheel face and contacts, be provided with planet wheel around the described permanent wheel, described planet wheel moves in turn with perseverance and contacts, described planet wheel is movably on the mounting bracket, one end of taking turns away from perseverance at described planet wheel is provided with cam, the described planet wheel and first pivoted arm are in transmission connection, described first pivoted arm and described cycloid wheel eccentric gearing.

The center of described cycloid wheel is provided with eccentric shaft, and described eccentric shaft and described first pivoted arm are connected to form eccentric gearing.

The utility model has increased permanent wheel and planet wheel between pinwheel and cycloid wheel, utilize the adjusting of cam, just can realize the variation of any velocity ratio, and its gear range can be selected arbitrarily in the 67.5-652.5 scope at 13.5-130.5, its gear range is big, can replace the reducing gear of cylinder gear speed reducer and frequency variator combination fully.

Description of drawings

Further describe relevant details of the present utility model below more in conjunction with the accompanying drawings.

Fig. 1 is the utility model prior art constructions schematic representation;

Fig. 2 is a structural representation of the present utility model.

Embodiment

With reference to accompanying drawing, this a kind of stepless planetary retarder, comprise input shaft 7, output shaft 9, pinwheel 13, the cycloid wheel 12 and second pivoted arm 11, described second pivoted arm 11 is connected with described cycloid wheel 12, described output shaft 9 is installed on described second pivoted arm 11, one side of described pinwheel 13 is provided with first pivoted arm 6 successively, permanent wheel 5 and butterfly spring 8, described butterfly spring 8 is enclosed within on the input shaft 7 and takes turns 5 wheel faces with perseverance and contacts, be provided with planet wheel 3 around the described permanent wheel 5, described planet wheel 3 and permanent wheel 5 moving contacts, described planet wheel 3 is movably on the mounting bracket 14, when assembling this retarder, when butterfly spring 8 is enclosed within on the input shaft 7, just be pressed on the pinch roller 4, contact with the wheel face of pinch roller 4, pinch roller 4 is because the elastic force of butterfly spring 8, push down 3 planet wheels, when planet wheel 3 is contacted with permanent wheel 5 wheel faces, enough frictional force is arranged, be provided with cam 2 at described planet wheel 3 away from an end of perseverance wheel 5, this cam 2 also contacts with the wheel face of described planet wheel 3, is provided with at the opposing side of cam 2 and decides ring 1, the described planet wheel 3 and first pivoted arm 6 are in transmission connection, described first pivoted arm 6 and described cycloid wheel 12 eccentric gearings; Specifically, be eccentric shaft 10 to be set at the center of cycloid wheel 12, described eccentric shaft 10 is connected to form eccentric gearing with described first pivoted arm 6.To change velocity ratio of the present utility model, as long as adjustment cam 2 is in the position of planet wheel 3 wheel faces, because planet wheel 3 wheel faces have tapering, when cam 2 axially dwindles or axially increase, promptly when cam 2 and the distance of encircling 1 are surely dwindled or are increased, just impel planet wheel 3 to move up and down, realize the variation of linear velocity, and reach the variation of velocity ratio, and pinch roller 4 is depressed in the elastic force effect of butterfly spring 8, the wheel face of planet wheel 3 has enough frictional force with the wheel face of permanent wheel 5 like this, when input shaft 7 rotates, can make permanent wheel 5 drive planet wheel 3 and rotate, the planet wheel 3 and first pivoted arm 6 are in transmission connection, so the rotation of planet wheel 3 just drives first pivoted arm 6 and rotates, first pivoted arm 6 drives cycloid wheel 12 by eccentric shaft 10 and rotates, and cycloid wheel 12 is rotated and driven 11 revolutions of second pivoted arm, and with on the power transmission output shaft 9.Surely to encircle 1 diameter different because planet wheel 3 and permanent wheel 5 reach, permanent wheel 5 rotates when driving planet wheel 3 rotations, just reach the purpose of deceleration, as for its velocity ratio, be exactly as the position of above-mentioned adjustment cam 2 at planet wheel 3 wheel faces, just can reach different velocity ratios, also therefore can realize changing arbitrarily the purpose of velocity ratio.

Claims

1, a kind of stepless planetary retarder, comprise input shaft (7), output shaft (9), pinwheel (13), cycloid wheel (12) and second pivoted arm (11), described second pivoted arm (11) is connected with described cycloid wheel (12), described output shaft (9) is installed on described second pivoted arm (11), a side that it is characterized in that described pinwheel (13) is provided with first pivoted arm (6) successively, permanent wheel (5), pinch roller (4) and butterfly spring (8), described butterfly spring (8) is enclosed within input shaft (7) and goes up and contact with pinch roller (4), be provided with planet wheel (3) around the described permanent wheel (5), described planet wheel (3) contacts with permanent wheel (5) is moving, on the mounting bracket (14) of described planet wheel (3) activity, one end of taking turns (5) away from perseverance at described planet wheel (3) is provided with cam (2), described planet wheel (3) is in transmission connection with first pivoted arm (6), described first pivoted arm (6) and described cycloid wheel (12) eccentric gearing.

2, stepless planetary retarder according to claim 1 is characterized in that the center of described cycloid wheel (12) is provided with eccentric shaft (10), and described eccentric shaft (10) is connected to form eccentric gearing with described first pivoted arm (6).