CN2303126Y

CN2303126Y - High efficiency rocking type active teeth speed reducer

Info

Publication number: CN2303126Y
Application number: CN 96241067
Authority: CN
Inventors: 曲继芳; 曲志刚
Original assignee: SOUTH BRANCH OF DONGBEI HEAVY MACHINERY COLLEGE
Current assignee: SOUTH BRANCH OF DONGBEI HEAVY MACHINERY COLLEGE
Priority date: 1996-10-16
Filing date: 1996-10-16
Publication date: 1999-01-06
Anticipated expiration: 2006-10-16

Abstract

The utility model relates to a high-efficiency rocking type active tooth speed reducer which uses a rocking type active tooth engaging pair as a key technology and successfully removes a W output mechanism. A rotating arm bearing is arranged outside an eccentric cam fixedly connected to a driving input shaft, and a shock-wave ring is arranged outside the rotating arm bearing. The outer side of the shock-wave ring is in contact with a group of rocking active teeth. Each rocking active tooth and an active tooth pin shaft are hinged on an active tooth frame. The outer sides of the rocking active teeth are in contact with a central wheel. When the utility model is driven, the rocking active teeth are driven by a shock-wave device to engage with the central wheel, and drive an output shaft to rotate in low speed when rocking around the active tooth pin shaft. The high-efficiency rocking type active tooth speed reducer has the advantages of wide range of driving ratio, strong load bearing performance, high driving efficiency, simple process and low cost, and can be produced by general mechanical factories.

Description

Efficient swing movable teeth reducer

The utility model is efficient swing movable teeth reducer.Be used for the motion and the transmission of power of stable drive ratio, it belongs to general mechanical transmission.

Existing Oscillating Tooth Gear Reducer technology (variable speed transmission bearing, raceway retarder, osculating circle transmission etc.) is mobile movable teeth reducer, and its technical characterstic is: driving component is the eccentric disc that is contained on the input shaft.The movable body's (push rod, roller, steel ball or their assemblying body) that is distributed in the movable teeth rack radial groove has replaced each rigidity gear teeth on the planetary pinion.In transmission process, input shaft drives eccentric disc promotion movable body and moves back and forth in radial groove (hole), so claim that these movable bodys are " mobile oscillating tooth ".These shaft-like and columns move the radially serious wear between guide groove on oscillating tooth and the movable teeth rack, and transmission loss is big, transmission efficiency is low, and the life-span is short, and the power of transmission is limited.The radially square guide groove of oscillating tooth requires the dimensional accuracy height, complex process, and processing difficulties needs to adopt alloy material.

The purpose of this utility model provide a kind of simple in structure, gear range is wide, bearing capacity is big, light abrasion, transmission efficiency height, the speed reducer that technology capability is good.

The utility model (accompanying drawing 1) is achieved in that input shaft (8) and eccentric cam key connecting, eccentric cam (7) gabarit dress rotary arm bearing (6), rotary arm bearing (6) outer shroud suit shock wave ring (5) (rotary arm bearing outer shroud and shock wave ring also can unite two into one), they have formed shock wave device, each wobble gear (4) connects with oscillating tooth bearing pin revolute pair on the uniform movable teeth rack, the shock wave ring contacts with each wobble gear (4) inner side surface, each wobble gear (4) is swung around oscillating tooth bearing pin (2), push away (drawing) moving oscillating tooth bearing pin by engagement simultaneously and make output shaft (1) obtain to slowly run, finished the transmission of transformation of speed and power with central gear (3).

Shock wave device on the input shaft of the present utility model (8) is double, and 180 degree configurations also can be single, and rotary arm bearing is common roller (pearl) bearing.

Wobble gear connects with pin hinge, can improve the situation that contacts of wobble gear and oscillating tooth bearing pin with sliding bearing, rolling bearing.Wobble gear is corresponding with shock wave device to be double.Also can be single.The structure of wobble gear be roller fork oscillating tooth (see Fig. 2 a), two roller fork oscillating tooth (seeing Fig. 2 b), they all are fabricated.Integrated type wobble gear (seeing Fig. 2 c), the eccentric cylinder wobble gear (is seen Fig. 2 a).

Wobble gear is made up of movable teeth rack and one group of wobble gear.Wobble gear has adopted " taking out the tooth technology ", and promptly taking out 1 or several tooth every a tooth does not influence velocity ratio, makes construction standardization, the seriation of wobble gear wheel.Corresponding with shock wave device, on the movable teeth rack is double in teeth groove.The bearing pin of these transmission two row's wobble gears is public.Movable teeth rack and output shaft can be one, also can assemble.Two central gears of this transmission, 180 degree are arranged, adopt nylon pin load balancing mechanism.Make that forming between central gear and support floats connects.Improve bearing capacity.

The supporting means of the utility model transmission output shaft: two block bearings can be placed on the both sides (see figure 1), also can be placed on homonymy.This transmission input shaft supporting means: left end is bearing on the output shaft.Right-hand member is bearing on the right end cap.See Fig. 1.

Drawings and Examples:

Fig. 1 is efficient swing movable teeth reducer sectional view.

Fig. 2 is the structural drawing of wobble gear.

Accompanying drawing 1 illustrates the utility model wobble gear deceleration embodiment: (8) are input shaft, and (7) are two eccentric cams, and (6) are rotary arm bearing, and (5) are the shock wave ring, and (4) are wobble gear, and (3) are central gear, and (2) are the oscillating tooth bearing pin, and (1) is output shaft.Input shaft (8) is bearing on output shaft (1) and the right end cap by bearing.Shock wave device is the two-row structure of 180 degree configurations, two eccentric cams (7) are contained on the input shaft (8), two eccentric cam external frames are equipped with identical two rotary arm bearings (6), be sleeved on two identical shock wave rings (5) outside it, the inboard of wobble gear (4) contacts with shock wave ring (5), the outside and central gear (3) engagement, wobble gear and oscillating tooth bearing pin (2) form revolute pair, and oscillating tooth bearing pin (2) connects firmly on movable teeth rack and forms one with output shaft (1).Integral central wheel (3) is fixed on the support with 6 nylon cylinder pins.Output shaft (1) left end is bearing on the support by bearing, and right-hand member is bearing on the right end cap by movable teeth rack and bearing.Wobble gear tooth number ZG and central gear tooth number Z _K=Z _G+ 1 or Z _K=Z _G-1.

During this wobble gear gearing down, (see figure 1), input shaft (8) rotates and drives with eccentric cam (7), rotary arm bearing (6) and shock wave ring (5) motion, promotes wobble gear (4) and does retarded motion around oscillating tooth bearing pin (2) and output shaft (1).

The utility model has the advantages that:

1. solved the life problems of rotary arm bearing. The swing movable gear Meshing Pair of high efficiency rocking type active teeth speed reducer is removed Be used for carrying out outside the transformation of speed, also have moving, as to allocate capable between centers rotating speed transmission function, successfully remove few teeth difference The pin-hole type W equispeed output mechanism of decelerator provides enough spaces of laying to rotary arm bearing, has solved few tooth Difference type speed reducer tumbler shaft bears the radial dimension restriction and the key issue of undercapacity. So transmitting equal-wattage Under the condition, high efficiency rocking type active teeth speed reducer is littler, in light weight than the radial dimension of few teeth difference type speed reducer, the life-span is long.

2. solved vibration problem. The unbalance mass, of high efficiency rocking type active teeth speed reducer comprises eccentric cam, turns to Arm axle holds, the shock wave ring, does not have planetary gear, and unbalance mass, is little; High efficiency rocking type active teeth speed reducer does not have the W output mechanism, After rotary arm bearing is selected by requirement of strength, bigger space is arranged, adopt the way of adjusting the sole mass distribution to do Complete equipilibrium to inertia force and inertia couple. So high efficiency rocking type active teeth speed reducer develops than other to heavy-duty machinery Planetary speed reducer with small tooth number difference bigger superiority is arranged.

3. transmission efficiency and bearing capacity have been improved. After high efficiency rocking type active teeth speed reducer has removed the W output mechanism, fortune Moving chain significantly shortens; Do not have moving sets in the Meshing Pair, the rear formation Meshing Pair of entirely rolling, flank of tooth phase are changed in the sliding lift-over of Meshing Pair Little to sliding; Adopt equal carrier technology and profile modification technology, the load of multiple tooth engagement distributes rationally, makes combining of complete machine Close transmission efficiency and improve, reach more than 90%.

4. improved processing technology. Be the axial oscillating tooth bearing pin of swing movable gear owing to become the radially guide groove of mobile oscillating tooth The hole has fundamentally solved the difficult problem that gathering sill processing difficulties, precision are difficult to guarantee. The biography of swing movable teeth reducer Moving ratio equals the swing movable gear number, and is even number, after the employing " taking out the tooth technology ", makes the pendulum of various power and gearratio The structure of moving oscillating tooth gear is identical, and frock quantity is few, is convenient to seriation. The key components and parts processing performance is good, can Meet saving working hour 10-15%. Do not need special equipment, can make in common machining factory.

5. saved alloy material. Efficient swing movable gear slows down and has saved bearing pin, guide and the pin-and-hole of W output mechanism. Save a large amount of alloy materials, compared with cycloidal-pin wheel, saved steel alloy 50-70%. Reduced cost.

Efficient swing movable teeth reducer is the rigid gear transmission, has but avoided all Tooth Shape Interference and the complicated designing and calculating of rigid gear transmission; Not the flexible gear transmission, have the advantage of the multiple tooth engagement of flexible gear transmission again, and overcome the flexible member fatigue ruption that the flexible gear transmission brings effectively.The high speed swinging movable teeth reducer is the Updated product of universal speed reducer, in industries such as food, weaving, light industry, building, metallurgy, mining machinery, Hoisting Machinery, engineering machinery, has wide practical use.

Claims

1, a kind of efficient swing movable teeth reducer, by input shaft (8), eccentric cam (7), wobble gear (4), compositions such as output shaft, it is characterized in that: input shaft (8) is used key connecting with eccentric cam (7), eccentric cam (a 7) rotary arm bearing of gabarit suit (6), rotary arm bearing (6) outer shroud suit shock wave ring (5), they have formed shock wave device, each wobble gear (4) connects with oscillating tooth bearing pin revolute pair on being distributed on movable teeth rack, the shock wave ring contacts with each wobble gear (4) inner side surface, each external side of wobble gear face contacts with central gear (3), during transmission, input shaft (8) drives shock wave device, promote each wobble gear (4) around oscillating tooth bearing pin (2) swing, push away (drawing) moving bearing pin of living by engagement simultaneously and make output shaft (1) obtain to slowly run with central gear (3).

2. retarder according to claim 1 is characterized in that: the shock wave device on the input shaft (8) is double, 180 degree configurations, and two rows' function is identical, and the shock wave cam profile is the eccentric circle cylinder, and during small-power, shock wave device also can be single.

3. retarder according to claim 1, it is characterized in that: wobble gear is the member or the component groups of a uniform oscillating tooth bearing pin swing on oscillating tooth gear, they are roller fork wobble gear, two roller fork wobble gear, and integrated type wobble gear and eccentric circle are lived wobble gear.

4. retarder according to claim 1, it is characterized in that: the tooth curve of central gear is a particular curve, satisfying under the certain condition, can use circularity substitution, the wheel (3) that centers can be made for whole, also can be directly be embedded on the lathe or float with a plurality of nylon pins with key and be connected on the support, the wobble gear wheel connects firmly with output shaft.

5. retarder according to claim 1 is characterized in that: rotary arm bearing (6) can be selected common roller (ball) bearing for use, and also can be special rotary arm bearing: outer race and shock wave ring unite two into one, and bearing inner ring and shock wave cam unite two into one.

6. retarder according to claim 1 is characterized in that: wobble gear wheel is hinged on by one group of wobble gear and forms on the uniform oscillating tooth pin of movable teeth rack.

7. retarder according to claim 1, it is characterized in that: when assembling, output shaft (1) and input shaft 8 are on a main axis, output shaft (1) can be made one with the wobble gear wheel, be bearing on the frame by two bearings, two kinds of supporting meanss are arranged: a kind of be two bearings in a side, another kind is that two bearings are in both sides.