CN202132489U

CN202132489U - Planet carrier for two-stage planetary gear speed reducer

Info

Publication number: CN202132489U
Application number: CN201120123886U
Authority: CN
Inventors: 金建光
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-25
Filing date: 2011-04-25
Publication date: 2012-02-01
Anticipated expiration: 2021-04-25

Abstract

The utility model provides a planet carrier for a two-stage planetary gear speed reducer, which comprises a first-stage planet carrier and a second-stage planet carrier. The first-stage planet carrier comprises first-stage journals, a first-stage spline and first-stage screw holes. The first-stage spline is arranged at the center of a disc body. Three identical first-stage journals are uniformly arranged on the same concentric circle of the disc body and the axis lines of the first-stage journals are parallel to the center line of the disc body. The first-stage screw holes are arranged at the centers of the first-stage journals. The second-stage planet carrier comprises screw holes, journals, a bearing seat and an internal gear. The bearing seat is arranged at the top center of the disc body. Three identical journals are uniformly arranged on the same concentric circle outside the disc body and the axis lines of the journals are parallel to the center line of the disc body. The screw holes are arranged at the center of each journal. The internal top of the disc body is equipped with a circular arc-shaped pit matched with the top of an output shaft and the internal lower part of the disc body is machined with the internal gear. The planet carrier of the utility model adopts an integral structure and also has the advantages of good rigidity and high precision. Due to the adoption of the planet carrier, the shock resistance of a two-stage planetary gear speed reducer is greatly improved and the service life of the two-stage planetary gear speed reducer is prolonged.

Description

A kind of planet carrier that is applicable to the twin-stage planet-gear speed reducer

Technical field

The utility model relates to a kind of planet carrier, specifically a kind ofly is applicable to a kind of twin-stage planet-gear speed reducer planet carrier.

Background technique

The planetary pinion transmission is compared with the fixed axis gear transmission, and it has the advantage of many uniquenesses.Its outstanding feature is: it can carry out power dividing when transferring power; Simultaneously, its input shaft and output shaft have alignment, and promptly output shaft and input shaft all are arranged on the same main axis.So the planetary pinion transmission is used for replacing the fixed axis gear transmission by people at present, and as the retarder in the various machine driven systems, speed increaser and speed change gear.Especially for the gear drive of those want that cube is little, quality is little, compact structure and transmission efficiency are high aeroengine, lifting transportation, petrochemical industry and weapons etc. and need the gear drive planetary pinion transmission of the vehicle such as automobile and tank of differential mechanism to obtain application more and more widely.Three primary elements of simple planetary arrangement are: sun gear, gear ring, planetary pinion and planetary carrier.Sun gear is positioned at the central position; Several planetary pinions are installed on the planetary carrier by means of needle bearing and planet pin, and these planetary pinions are meshed with sun gear, and generally are evenly arranged in around the sun gear; The outside is the gear ring that is meshed with the planet gear.In comprising planetary gear train, situation is just different.Owing to there is planet carrier; That is to say to have three rotatingshafts to allow the power I/O, can also be with the means of clutch or break and so on; The wherein rotation of an axle of restriction in needs; Remaining two axles carry out transmission, and so, the relation between the intermeshed gear just can have multiple combination.Epicyclic train can adopt several equally distributed planet wheels transmitting movement and power simultaneously.These planet wheels are the radial component of reaction force balance mutually on business then between centrifugal inertia force that produces and flank profil, so main shaft is stressed little, transmitted power is big.Because it adopts inside engaged gear, made full use of the space of transmission, and input and output shaft point-blank, in addition so the bulk of whole train is much littler than the common ordinary gear train under the same terms.This train is particularly suitable for aircraft.In a word, the planetary pinion transmission has that quality is little, volume is little, velocity ratio reaches the efficient advantages of higher greatly.Therefore, the planetary pinion transmission has been widely used in All aspects of such as engineering machinery, mining machinery, metallurgical machinery, handling machinery, light industry and machinery, Petro-Chemical Machinery, lathe, robot, automobile, tank, cannon, aircraft, steamer, instrument and instrument at present.The planetary pinion transmission is not only applicable to high rotating speed, high-power, and on the transmission device of low speed high torque, has obtained application yet.It is almost applicable to all power and speed range, so present Gear Planet Transmission technology has become one of emphasis of mechanical transmission development.For the artificer of planetary pinion transmission, not only should understand its advantage, and should in the design work of oneself, bring into play its advantage fully, and be reduced to minimum limit to its shortcoming.Thereby design the planetary type gear transmission unit of function admirable.The main means of maximizing favourable factors and minimizing unfavourable ones have constantly to be improved its drive mechanism and all carries mode, improves constantly the production technology level, for example: standardization, many kinds, the hard flank of tooth, highi degree of accuracy, high rotating speed, high-power, big specification, big torque.A kind of twin-stage planet-gear speed reducer, the instance of maximizing favourable factors and minimizing unfavourable ones exactly, its objective is provides compact structure, big, the twin-stage planet-gear speed reducer steady, that the life-span prolongs that turns round of velocity ratio, solves vibrations and the big problem of oscillating quantity of being applicable to.Concrete embodiment is, upper box 14 and lower box 15 become casing with bolt combination, and one-level tooth axle 2 is with 14 one-tenth flexible connections of input bearing 20 and upper box, and with steel ball 3 and 7 pairs of tops of secondary tooth axle; Primary planet pinion 1 becomes flexible connection through rolling bearing with the axle journal of primary planet carrier 5 and the inner ring of rolling bearing is fastening with one-level pressing plate 6 and bolt and its axle journal; Primary planet pinion 1 meshes with one-level tooth axle 2 and primary annulus 4 simultaneously, and transmission of power is given the primary planet carrier 5 that spline comprises that a jump ring is fixedly connected with secondary tooth axle 7; Roughly the same, secondary planetary gear 9 becomes flexible connection through rolling bearing with the axle journal of secondary planet frame 10 and the inner ring of rolling bearing is fastening with secondary pressing plate 11 and bolt and its axle journal; Secondary planetary gear 9 meshes with secondary tooth axle 7 and secondary gear ring 8 simultaneously, and secondary tooth axle 7 is given secondary planet frame 10 with transmission of power; Secondary planet frame 10 is given output shaft 18 through being meshed with the output gear 19 that is fixedly connected with output shaft 18 with spline and circular arc over glaze jump ring 21 with transmission of power.Sealing 16 is installed between lower box 15 and the output shaft 18 and seals.What be worth research is after the overall performance of speed reducer is optimized, planet carrier to be proposed higher requirement.

Summary of the invention

A kind of planet carrier that is applicable to the twin-stage planet-gear speed reducer of the utility model has solved good rigidly, precision height, reliability problems.

The utility model discloses a kind of twin-stage planet-gear speed reducer planet carrier that is applicable to, comprise primary planet carrier and secondary planet frame; Primary planet carrier comprises one-level axle journal, one-level spline, one-level screw; The one-level spline is positioned at the center of disk body, three identical one-level axle journals be distributed on the concentric circle of disk body and its shaft axis all parallel with the center line of disk body; The one-level screw is positioned at the center of one-level axle journal; The secondary planet frame comprises screw, axle journal, bearing support, internal gear; Bearing seat is in the top center of disk body, three identical axle journals be distributed on the concentric circle of disk body exterior and its shaft axis all parallel with the center line of disk body; Screw is positioned at the center of each axle journal; On the top of disk body interior a circular arc pit that is complementary with the output shaft top is arranged, be processed with internal gear in its underpart.

Said planet carrier is a monolithic construction, and good rigidly, precision height have improved the anti-seismic performance of twin-stage planet-gear speed reducer greatly and prolonged its working life.

Description of drawings

Fig. 1 is a kind of scheme of erection of twin-stage planet-gear speed reducer;

Fig. 2 is a kind of plan view that is applicable to the primary planet carrier of twin-stage planet-gear speed reducer;

Fig. 3 is the A-A sectional view of Fig. 2.

Fig. 4 is a kind of plan view that is applicable to the secondary planet frame of twin-stage planet-gear speed reducer.

Fig. 5 is the B-B sectional view of Fig. 4.

Reference numerals list:

1; Primary planet pinion 2; One-level tooth axle 3; Steel ball 4; Primary annulus 5; Primary planet carrier 6; One-level pressing plate 7; Secondary tooth axle 8; Secondary gear ring 9; Secondary planetary gear 10; Secondary planet frame 11; Secondary pressing plate 12; Output bearing 13; Spring bearing 14; Upper box 15; Lower box 16; Sealing 17; Hole jump ring 18; Output shaft 19; Output gear 20; Input bearing shaft 21; Jump ring 22; Plug 23; Hanger 51; One-level axle journal 52; One-level spline 53; One-level screw 101; Screw 102; Axle journal 103; Bearing support 104; Internal gear

Embodiment

Give below and close accompanying drawing and embodiment is further described the utility model.

Shown in Fig. 1-5, the utility model discloses a kind of twin-stage planet-gear speed reducer planet carrier that is applicable to, comprise primary planet carrier 5 and secondary planet frame 10; The both is a monolithic construction, and said primary planet carrier 5 comprises one-level axle journal 51, one-level spline 52, one-level screw 53; One-level spline 52 is positioned at the center of disk body, three identical one-level axle journals 51 be distributed on the concentric circle of disk body and its shaft axis all parallel with the center line of disk body; One-level screw 53 is positioned at the center of one-level axle journal 51, and said secondary planet frame 10 comprises screw 101, axle journal 102, bearing support 103, internal gear 104; Bearing support 103 is positioned at the top center of disk body, three identical axle journals 102 be distributed on the concentric circle of disk body exterior and its shaft axis all parallel with the center line of disk body; Screw 101 is positioned at the center of each axle journal 102; On the top of disk body interior a circular arc pit that is complementary with output shaft 18 tops is arranged, be processed with internal gear 104 in its underpart.

Referring to accompanying drawing 1, this figure is the scheme of erection of a kind of twin-stage planet-gear speed reducer of the utility model, comprises primary planet pinion 1, one-level tooth axle 2, steel ball 3, primary annulus 4, primary planet carrier 5, one-level pressing plate 6, secondary tooth axle 7, secondary gear ring 8, secondary planetary gear 9, secondary planet frame 10, secondary pressing plate 11, output bearing 12, spring bearing 13, upper box 14, lower box 15, Sealing 16, hole jump ring 17, output shaft 18, output gear 19, input bearing 20, axle jump ring 21, plug 22, hanger 23; Upper box 14 and lower box 15 become casing with bolt combination, and one-level tooth axle 2 is with 14 one-tenth flexible connections of input bearing 20 and upper box, and with steel ball 3 and 7 pairs of tops of secondary tooth axle; Primary planet pinion 1 becomes flexible connection through rolling bearing with the axle journal of primary planet carrier 5 and the inner ring of rolling bearing is fastening with one-level pressing plate 6 and bolt and its axle journal; Primary planet pinion 1 meshes with one-level tooth axle 2 and primary annulus 4 simultaneously, and transmission of power is given the primary planet carrier 5 that spline comprises that a jump ring is fixedly connected with secondary tooth axle 7; Roughly the same, secondary planetary gear 9 becomes flexible connection through rolling bearing with the axle journal of secondary planet frame 10 and the inner ring of rolling bearing is fastening with secondary pressing plate 11 and bolt and its axle journal; Secondary planetary gear 9 meshes with secondary tooth axle 7 and secondary gear ring 8 simultaneously, and secondary tooth axle 7 is given secondary planet frame 10 with transmission of power; Secondary planet frame 10 is given output shaft 18 through being meshed with the output gear 19 that is fixedly connected with output shaft 18 with spline and circular arc over glaze jump ring 21 with transmission of power; Output shaft 18 flexibly connects with output bearing 12 and hole jump ring 17 and lower box 15; Simultaneously; With the lower end arc surface of its upper end arc surface and secondary planet frame 10 to pushing up; Dock with bearing between the secondary tooth axle 7 through secondary planet frame 10 again, make one-level tooth axle 2, secondary tooth axle 7 and secondary tooth axle 7 form limit-type coaxial configuration, with the required precision of completion second motive force transmission.

Between output shaft 18 and lower box 15, Sealing is installed, the form of said Sealing is a lip-type seal.In the middle and upper part of lower box 15 plug 22 is installed, the hanger 23 of lower box 15 is in the one of which side.

Referring to accompanying drawing 2, this figure is a kind of plan view that is applicable to the primary planet carrier 5 of twin-stage planet-gear speed reducer, and primary planet carrier 5 comprises one-level axle journal 51, one-level spline 52, one-level screw 53; One-level spline 52 is positioned at the center of disk body, three identical one-level axle journals 51 be distributed on the concentric circle of disk body and its shaft axis all parallel with the center line of disk body; One-level screw 53 is positioned at the center of one-level axle journal 51.

Referring to accompanying drawing 3, this figure is a kind of A-A sectional view that is applicable to bipolar planet-gear speed reducer Fig. 2.

Referring to accompanying drawing 4, this figure is a kind of plan view that is applicable to the secondary planet frame 10 of twin-stage planet-gear speed reducer, and secondary planet frame 10 comprises screw 101, axle journal 102, bearing support 103, internal gear 104; Bearing support 103 is positioned at the top center of disk body, three identical axle journals 102 be distributed on the concentric circle of disk body exterior and its shaft axis all parallel with the center line of disk body; Screw 101 is positioned at the center of each axle journal 102; On the top of disk body interior a circular arc pit that is complementary with output shaft 18 tops is arranged, be processed with internal gear 104 in its underpart.

Referring to accompanying drawing 5, this figure is a kind of B-B sectional view that is applicable to bipolar planet-gear speed reducer Fig. 4.

Claims

1. planet carrier that is applicable to the twin-stage planet-gear speed reducer; It is characterized in that: comprise primary planet carrier (5) and secondary planet frame (10); The both is a monolithic construction; Said primary planet carrier (5) comprises one-level axle journal (51), one-level spline (52), one-level screw (53); One-level spline (52) is positioned at the center of disk body; Three identical one-level axle journals (51) be distributed on the concentric circle of disk body and its shaft axis all parallel with the center line of disk body, one-level screw (53) is positioned at the center of one-level axle journal (51), said secondary planet frame (10) comprises screw (101), axle journal (102), bearing support (103), internal gear (104); Bearing support (103) is positioned at the top center of disk body, three identical axle journals (102) be distributed on the concentric circle of disk body exterior and its shaft axis all parallel with the center line of disk body; Screw (101) is positioned at the center of each axle journal (102), and a circular arc pit that is complementary with output shaft (18) top is arranged on the top of disk body interior, is processed with internal gear (104) in its underpart.