CN205639490U - Poor electric steering engine drive mechanism of few tooth - Google Patents

Abstract

The utility model relates to a poor electric steering engine drive mechanism of few tooth, including the base that contains cylindric cavity, install the eccentric shaft in this cavity, the eccentric shaft is including the cylindrical section of eccentric section with eccentric section both sides, base externally mounted motor, the electric motor rotor and a bevel gear of motor link to each other, and a bevel gear installs in the base and meshes with the 2nd bevel gear, the 2nd bevel gear is fixed to be cup jointed on the cylindrical section of eccentric shaft, dual gea is upward cup jointed through the bearing to the eccentric section of eccentric shaft, sets up the ring gear on the inner wall of base, dual gea adopts the poor planetary gear of few tooth, including big planetary gear and little planetary gear side by side, and wherein part meshing between the ring gear of big planetary gear's the outside and base, part meshing between little planetary gear's the outside and the inner wall of output gear one side, output gear overlaps and establishes on the eccentric shaft just opposite side tip fixed connection output shaft, set up the bearing between output gear and the base. The utility model discloses the transmission process is stable, and the quality is light.

Description

A kind of few teeth difference electric steering engine drive mechanism

[technical field]

This utility model relates to flying vehicles control device field, is specifically related to a kind of few teeth difference electric steering engine drive mechanism.

[background technology]

Along with the development of space technology, one of study hotspot becoming this field of the steering wheel in aircraft.Aircraft steering engine is to realize The crucial actuator of the posture changing motions such as attitude of flight vehicle pitching, driftage, rolling.

Aircraft in early days is all to use hydraulic sterring engine or pneumatic servo, but the shortcoming of this type of steering wheel to be structure complicated, machining accuracy is high, Quality is big, cost is high, technical difficulty is big, is gradually backed out the application scenario of aircraft steering engine.Swift and violent along with aeronautical and space technology is sent out The continuous exploration of exhibition and more advanced weaponry, the overall performance of aircraft steering engine is required more and more higher, promotes steering wheel towards body by people Long-pending quality constantly reduces, and bearing capacity constantly strengthens, and the direction that control performance improves constantly is developed, and therefore electric steering engine arises. Electric steering engine is mainly made up of steering wheel, train of reduction gears, position feedback potentiometer, direct current generator and control circuit plate.Control circuit Plate accepts the control signal from holding wire, controls electric machine rotation, driven by motor series of gears group, drives to export rudder after deceleration Dish.The output shaft of steering wheel and position feedback potentiometer are connected to, and while output shaft rotation, drive position feedback potentiometer, electricity Position meter will export a voltage signal to control circuit plate, feed back, and then control circuit buttress is according to position decision motor Rotation direction and speed.The version of electric steering engine uniqueness makes it have simple and reliable, good manufacturability, working service convenience, energy The characteristics such as source is single, with low cost, easily controllable, are widely used in the aircraft of the most various advanced person.

The key components of aircraft steering engine drive mechanism are decelerators, make steering wheel export larger torque by deceleration energy.Current Conventional steering wheel decelerator mainly has cylinder gear speed reducer, RV decelerator and harmonic speed reducer.The structure of cylinder gear speed reducer Simply, rigidity is relatively big, also causes weight and volume bigger；Simultaneously because have higher transmission return difference, it is difficult to realize high-accuracy biography Dynamic；RV decelerator is by first order involute cylindrical gear planetary gear speed reducing mechanism and second level cycloid pin gear planet speed reducer structure two parts Composition, transmission accuracy and transmission efficiency are high, but the form of two-stage transmission makes reducer structure size relatively big, and the second level passes simultaneously The dynamic big required precision of cycloidal-pin wheel manufacture difficulty is high, causes manufacturing cost too high.Harmonic speed reducer relies on produced by flexible gear Controlled elasticity deformation wave comes transmitting movement and power, it is possible to achieve the feature of small size big speed ratio, but its flexbile gear needs repeatedly elastic State under work, i.e. bear alternating bending stress, bear distorting stress again, working condition is very severe, reduces decelerator Reliability, therefore flexbile gear to use material performance requirement the highest, the processing and manufacturing of flexbile gear be also been proposed newly by high performance material Problem, the rigidity of flexbile gear is little compared with other parts simultaneously so that decelerator integral rigidity is less, along with use the time increase motion essence Degree can significantly reduce.

At present, the key issue that the design of the drive mechanism of electric steering engine exists is as follows: (1) drive mechanism quality of loads ratio is big, as What ensures that big rigidity keeps high accuracy simultaneously；(2) the excessive stability causing drive mechanism of external loading moment of torsion reduces.

[summary of the invention]

The purpose of this utility model is to overcome problems of the prior art, it is provided that a kind of few teeth difference electric steering engine drive mechanism, Simplify drive mechanism, alleviate quality, stable transmission.

In order to achieve the above object, this utility model adopts the following technical scheme that

Including the pedestal of level, base interior is cylindrical cavity, is provided with eccentric shaft in this cavity, and eccentric shaft includes eccentric segment With the cylindrical section of eccentric segment both sides, and the cylindrical cavity of the cylindrical section of eccentric shaft and pedestal is coaxially disposed；

Pedestal is outside installs motor, and the rotor of motor is connected through pedestal sidewall and the first bevel gear, and the first bevel gear is arranged on In pedestal and engage with the second bevel gear；Second bevel gear is fixedly sleeved on the cylindrical section of eccentric shaft side；The eccentric segment of eccentric shaft On by bearing be socketed duplicate gear, the inwall of pedestal arranges ring gear；Duplicate gear uses small teeth number difference planet gear, including also The mafor planet gear of row and small planetary gear, wherein part engagement, asteroid between outside and the ring gear of pedestal of mafor planet gear Part engagement between outside and the inwall of output gear side of gear, output gear is set on eccentric shaft and end side is fixed Connect output shaft；Bearing is set between output gear and pedestal.

Further, pin is used to connect between motor and the first bevel gear.

Further, use between eccentric shaft and the second bevel gear bonded；And between eccentric shaft and the second bevel gear, tapered end is installed Location screw.

Further, the first cylinder roller bearing and the second cylinder roller bearing, and first it are provided with between duplicate gear and eccentric shaft Cylinder roller bearing is positioned at inside the small planetary gear of duplicate gear, and the second cylinder roller bearing is positioned at the mafor planet gear of duplicate gear Internal.

Further, input end ring, input end ring it are provided with between the second bevel gear and the second cylinder roller bearing On be enclosed within eccentric shaft by arranging the first eccentric orfice；Be provided with on second bevel gear for be socketed on input end ring Two eccentric orfices.

Further, being provided with outfan end ring between output shaft and duplicate gear, outfan end ring is enclosed within eccentric shaft； The eccentric massblock for reducing rotary inertia it is provided with on outfan end ring.

Further, use hole axle to coordinate between output shaft with output gear, and trip bolt is installed between the two.

Further, the first bevel gear and the second bevel gear are spur gear low module bevel gear.

Further, the first deep groove ball bearing is set between rotor and pedestal sidewall；Bearing between output gear and pedestal is adopted Use the second deep groove ball bearing；One end of eccentric shaft is arranged in output shaft by the first angular contact ball bearing, and the other end passes through second jiao Contact ball bearing is arranged in pedestal.

Compared with prior art, this utility model has a following useful technique effect:

This utility model is by having high rigidity, small size, big torque, lightweight, the fewer differential teeth planetary of the advantage such as easy to process Gear, as duplicate gear, is used in big rigidity, the high-accuracy and steering wheel of high reliability, is formed in steering wheel drive mechanism, transmission Process stabilization, even if external loading moment of torsion is excessive, is not easy to fluctuation concussion occur, has reliable exercise performance, improve transmission Precision and stability；By directly being processed on the pedestal of drive mechanism by the ring gear of fixing duplicate gear, part both can be reduced Number, simplifies drive mechanism, also mitigates the quality of whole drive mechanism.And the pedestal in this utility model is a part, also The cumulative errors that installation between decreasing because of part positions increased frequency and brings so that the knot of whole aircraft steering engine drive mechanism Structure is simpler, rationally, efficiently.

Further, use bonded between this utility model eccentric shaft and the second bevel gear, and tapered end location screw is installed, limited Limit the auger tooth axial displacement relative to eccentric shaft of the second bevel gear.

Further, this utility model, by arranging input end ring, coordinates with eccentric shaft, is possible not only to fasten the second cylinder Roller bearing and the second bevel gear, and owing to arranging the first eccentric orfice and the second eccentric orfice, can with the key on the second bevel gear altogether With using transmission moment of torsion.

Further, this utility model, by arranging eccentric massblock on outfan end ring, reaches to reduce whole drive mechanism The purpose of rotary inertia.

Further, this utility model supports output gear by arranging the second deep groove ball bearing, realizes at limited space model The purpose of bigger load is born in enclosing.

[accompanying drawing explanation]

Fig. 1 is planar structure schematic diagram of the present utility model.

Fig. 2 is drive mechanism sketch of the present utility model.

Fig. 3 is perspective view of the present utility model.

Fig. 4 is stereochemical structure decomposing schematic representation of the present utility model.

Wherein: 1-output shaft；2-the first angular contact ball bearing；3-outfan end ring；4-output gear；5-the first cylinder rolls Sub-bearing；6-the second cylinder roller bearing；7-input end ring；8-the second bevel gear；9-eccentric shaft；10-the second angular contact Ball bearing；11-the first bevel gear；12-the first deep groove ball bearing；13-motor；14-pedestal；15-duplicate gear；16-the second zanjon Ball bearing.

[detailed description of the invention]

Below in conjunction with the accompanying drawings this utility model is described in further details.

As shown in Figures 1 to 4, this utility model includes output shaft 1, outfan end ring 3, output gear 4, input End ring 7, the second bevel gear 8, eccentric shaft 9, the first bevel gear 11, motor 13, pedestal 14 and duplicate gear 15 etc.； Wherein output shaft 1, output gear 4 and pedestal 14 constitute cavity, are provided with outfan end ring 3, duplicate gear in this cavity 15, eccentric shaft 9, input end ring 7 and the first bevel gear 11.

Pedestal 14 is horizontally disposed with, and pedestal 14 is internal is cylindrical cavity, is coaxially installed with eccentric shaft 9 in this cavity, and eccentric Axle 9 is supported by the first angular contact ball bearing 2 and the second angular contact ball bearing 10 and is positioned, wherein the first angular contact ball bearing 2 are arranged in output shaft 1, and the second angular contact ball bearing 10 is arranged in pedestal 14；Eccentric shaft 9 includes eccentric segment and eccentric segment The cylindrical section of both sides, the centrage of its cylindrical section is coaxial with the cylindrical cavity of pedestal 14.Pedestal 14 is outside installs motor 13, Motor 13 can use motor；The rotor of motor 13 is connected through the lower wall of pedestal 14 with the first bevel gear 11, electricity Pin is used to be connected between machine 13 with the first bevel gear 11；First deep groove ball bearing 12 is set between rotor and pedestal 14 sidewall Support.In first bevel gear 11 is arranged on pedestal 14 and engage with the second bevel gear 8；Second bevel gear 8 is fixedly sleeved in bias On cylindrical section on the right side of axle 9.Bonded driving torque, and eccentric shaft 9 and second is used between eccentric shaft 9 and the second bevel gear 8 Tapered end location screw is installed between bevel gear 8, limits the axial displacement relative to eccentric shaft 9 of the auger tooth.

On the inwall of pedestal 14, ring gear is set；Being socketed duplicate gear 15 on the eccentric segment of eccentric shaft 9, duplicate gear 15 uses Small teeth number difference planet gear, including mafor planet gear arranged side by side and small planetary gear, mafor planet gear is positioned at right side, asteroid tooth Wheel is positioned at left side；Wherein between outside and the ring gear of pedestal 14 of mafor planet gear part engagement, the outside of small planetary gear and Part engagement between inwall on the right side of output gear 4.Owing to duplicate gear 15 should bear the radial force that two gears bring, with Time to bear both produce moment of flexure, therefore support by the first cylinder roller bearing 5 and the second cylinder roller bearing 6 and position, First cylinder roller bearing 5 is positioned at inside the small planetary gear of duplicate gear 15, and the second cylinder roller bearing 6 is positioned at duplicate gear Inside the mafor planet gear of 15.

It is provided with input end ring 7, on input end ring 7 between second bevel gear 8 and the second cylinder roller bearing 6 It is enclosed within eccentric shaft 9 by arranging the first eccentric orfice；It is provided with for being socketed in input end ring 7 on second bevel gear 8 The second eccentric orfice on right-hand member.Input shaft bearing back-up ring 7 coordinates with eccentric shaft 9, is possible not only to fasten the second cylinder roller bearing 6 With the second bevel gear 8, and owing to arranging the first eccentric orfice and the second eccentric orfice, jointly can make with the key on the second bevel gear 8 With transmission moment of torsion.

Output gear 4 is set on eccentric shaft 9 and left end is fixing connects output shaft 1, and output shaft 1 is positioned at the circle of pedestal 14 Outside cylindrical cavity；Output gear 4 had both born the radial force of duplicate gear 15, bore the moment of flexure in the external world again simultaneously, the most defeated Go out and between gear 4 with output shaft 1, use hole axle to coordinate, and connected as one by additional trip bolt between the two.

Owing to the radial space between pedestal 14 is very limited, the second deep-groove ball that an Internal and external cycle different diameters is the least can be used Bearing 16 supports output gear 4, realizes bearing the purpose of bigger load in limited spatial dimension.Eccentric shaft 9 is by One angular contact ball bearing 2 and the second angular contact ball bearing 10 support and position, simultaneously the second bevel gear 8 and the first bevel gear 11 Between the axial force of both direction that produces also be supported by.

Being provided with outfan end ring 3 between output shaft 1 and duplicate gear 15, outfan end ring 3 is enclosed within eccentric shaft 9 On, and left end and the first angular contact ball bearing 2 connect, right-hand member and the eccentric segment of eccentric shaft 9 and the first cylinder roller bearing 5 Connect；It is provided with eccentric massblock on outfan end ring 3, reaches to reduce the purpose of the rotary inertia of whole drive mechanism, i.e. This eccentric massblock is 180 ° with the eccentric block on eccentric shaft 9.

Work process that this utility model is main and principle: control circuit plate accepts the control signal from holding wire, control motor 13 rotate, and motor 13 drives the first bevel gear 11 that by the second bevel gear 8, power is driven to eccentric shaft 9, and eccentric shaft 9 drives Duplicate gear 15 revolves round the sun and rotation, when motor 13 drives the second bevel gear 8 to rotate, is driven partially by the first bevel gear 11 Mandrel 9 rotates, and the duplicate gear 15 being now loaded on eccentric shaft 9 eccentric segment makees revolution motion around eccentric shaft 9 cylindrical section center. Simultaneously as pedestal 14 maintains static, and the mafor planet gear in duplicate gear 15 engages with the ring gear part of pedestal 14, Under the ring gear effect of pedestal 14, duplicate gear 15 makees reverse low speed spinning motion around eccentric shaft 9 cylindrical section center, and drives Output gear 4 and output shaft 1 rotate, and reach the purpose slowed down.

The output shaft 1 of steering wheel and position feedback potentiometer are connected to, and while output shaft 1 rotates, drive position feedback potentiometer, Position feedback potentiometer will export a voltage signal to control circuit plate, feed back, and then control circuit buttress is according to position Determine rotation direction and the speed of motor.

Duplicate gear 15 is the small teeth number difference planet gear that one mafor planet gear of a small planetary gear is arranged side by side, by with eccentric shaft 9 Cooperation, realize rotation and revolution simultaneously；In order to make compact conformation, reduce error and polygon effect, the second bevel gear 8 and the One bevel gear 11 is spur gear low module bevel gear.

This utility model is the overall structure optimizing aircraft steering engine drive mechanism, by few teeth difference travelling gear and aircraft steering engine transmission Mechanism carries out integrated design, and the ring gear that will fix duplicate gear 15 is directly processed on the pedestal 14 of drive mechanism, both may be used To reduce parts count, simplify drive mechanism, also mitigate the quality of whole drive mechanism；At pedestal 14 indoor design bearing block, For placing support the second angular contact ball bearing 10, pedestal 14 serves as the effect of protection inner body housing, whole pedestal 14 simultaneously It is a part, the cumulative errors that the installation between decreasing because of part positions increased frequency and brings so that whole aircraft rudder The structure of machine drive mechanism is simpler, rationally, efficiently.

For meeting being directly connected to of output shaft 1 and potentiometer, eccentric shaft 9 is made hollow, with a resetting shaft through eccentric shaft 9 Couple with the position feedback potentiometer of output shaft 1, to detect the position of output shaft 1 feedback.

Because motor 13 kinestate is high speed low torque, after the effect by the second bevel gear 8 and the first bevel gear 11, transmission Speed on eccentric shaft 9 reduces, and moment of torsion increases, and the ring gear on duplicate gear 15, output gear 4 and pedestal 14 has The multiple tooth meshing characteristic of few teeth difference, transmission process is stable, is difficult to fluctuation concussion occur, possesses good transmission stability and precision.Real In the running of border, due to the existence of few teeth difference travelling gear, aircraft steering engine drive mechanism has reliable exercise performance.

First bevel gear 11 and the second bevel gear 8 engage, and the ring gear on the mafor planet gear of duplicate gear 15 and pedestal 14 is nibbled Closing, small planetary gear and the output gear 4 of duplicate gear 15 engage, wherein, and the first bevel gear 11, duplicate gear 15 and defeated Going out gear 4 is all to be connected with each other by eccentric shaft 9, its frequency values relatively, simultaneously three to the frequency of gear all in low-frequency band, Far below actual exciting source frequency, show that travelling gear is difficult to judder phenomenon occur, add transmission stability.

With traditional steering wheel drive mechanism is compared, this utility model will have high rigidity, small size, big torque, lightweight, processing The planetary speed reducer with small tooth number difference of the advantages such as convenient, is used in big rigidity, the high-accuracy and steering wheel of high reliability, it is provided that one possesses Small size, big torque, big rigidity, the high-accuracy and aircraft steering engine drive mechanism of high reliability advantage, it is possible to meet aircraft The high performance demands of steering wheel drive mechanism, has the highest engineering practical value and theory directive significance.This utility model also have with Lower advantage: (1) aircraft ensures accurate transmission in the case of frequently turning to；(2) mechanical stability is ensured while fast pulldown；(3) Small size, lightweight is ensured in the case of quality of loads is bigger；(4) high reliability of transmission.

Claims (9)

1. a few teeth difference electric steering engine drive mechanism, it is characterised in that: including the pedestal (14) of level, pedestal (14) is internal For cylindrical cavity, being provided with eccentric shaft (9) in this cavity, eccentric shaft (9) includes eccentric segment and the cylinder of eccentric segment both sides Section, and the cylindrical cavity of the cylindrical section of eccentric shaft (9) and pedestal (14) is coaxially disposed；

Pedestal (14) is outside installs motor (13), and the rotor of motor (13) is through pedestal (14) sidewall and the first cone tooth Wheel (11) is connected, and in the first bevel gear (11) is arranged on pedestal (14) and engages with the second bevel gear (8)；Second cone tooth Wheel (8) is fixedly sleeved on the cylindrical section of eccentric shaft (9) side；It is socketed duplex by bearing on the eccentric segment of eccentric shaft (9) Gear (15), the inwall of pedestal (14) arranges ring gear；Duplicate gear (15) uses small teeth number difference planet gear, including also The mafor planet gear of row and small planetary gear, wherein part engagement between outside and the ring gear of pedestal (14) of mafor planet gear, Part engagement between the inwall of the outside of small planetary gear and output gear (4) side, output gear (4) is set in eccentric shaft (9) Upper and end side is fixing connects output shaft (1)；Between output gear (4) and pedestal (14), bearing is set.

A kind of few teeth difference electric steering engine drive mechanism the most according to claim 1, it is characterised in that: motor (13) and the Pin is used to connect between one bevel gear (11).

A kind of few teeth difference electric steering engine drive mechanism the most according to claim 1, it is characterised in that: eccentric shaft (9) and the Use bonded between two bevel gears (8)；And tapered end location screw is installed between eccentric shaft (9) and the second bevel gear (8).

A kind of few teeth difference electric steering engine drive mechanism the most according to claim 1, it is characterised in that: duplicate gear (15) And it is provided with the first cylinder roller bearing (5) and the second cylinder roller bearing (6), and the first cylindrical roller between eccentric shaft (9) Bearing (5) is positioned at inside the small planetary gear of duplicate gear (15), and the second cylinder roller bearing (6) is positioned at duplicate gear (15) Mafor planet gear inside.

A kind of few teeth difference electric steering engine drive mechanism the most according to claim 4, it is characterised in that: the second bevel gear (8) With second be provided with input end ring (7) between cylinder roller bearing (6), by arranging on input end ring (7) First eccentric orfice is enclosed within eccentric shaft (9)；It is provided with on second bevel gear (8) for being socketed in input end ring (7) On the second eccentric orfice.

A kind of few teeth difference electric steering engine drive mechanism the most according to claim 1, it is characterised in that: output shaft (1) and pair Being provided with outfan end ring (3) between connection gear (15), outfan end ring (3) is enclosed within eccentric shaft (9)；Defeated Go out to hold to be provided with on end ring (3) eccentric massblock for reducing rotary inertia.

A kind of few teeth difference electric steering engine drive mechanism the most according to claim 1, it is characterised in that: output shaft (1) is with defeated Go out and between gear (4), use hole axle to coordinate, and trip bolt is installed between the two.

A kind of few teeth difference electric steering engine drive mechanism the most according to claim 1, it is characterised in that: the first bevel gear (11) It is spur gear low module bevel gear with the second bevel gear (8).

A kind of few teeth difference electric steering engine drive mechanism the most according to claim 1, it is characterised in that: rotor and pedestal (14) the first deep groove ball bearing (12) is set between sidewall；Bearing between output gear (4) and pedestal (14) uses second Deep groove ball bearing (16)；One end of eccentric shaft (9) is arranged in output shaft (1) by the first angular contact ball bearing (2), separately One end is arranged in pedestal (14) by the second angular contact ball bearing (10).