Electric drive for producing torque

FIELD: instrument industry.

SUBSTANCE: electric drive comprises first and second electric motors, planet gearings, and differential. Stators (5) and (6) of the electric motors are secured to housing (2) of the electric drive. Shaft (7) of rotor (3) of the first electric motor is mounted on base (1) and is connected with central pinion (16) of the differential through a clutch. Shaft (10) of rotor (4) of the second electric motor bears on shaft (7) of rotor (3) and is connected with the hollow central pinion (17) of the differential through a clutch. Central pinion (16) is mounted in the space of central pinion (17) and engages satellites (19). Satellites (19) engage satellites (21) in pair. Central pinion (16) is interposed between two spherical bearings (22) and (23). Carriers (20), (27), and (30) of the differential and first and second planet gearings are made in block with central pinions (25), (29), and (33) of the first, second, and third planet gearings, respectively. Satellites (26) and (32) engage common gearing wheel (34) which is secured to housing (2). Carrier (37) of the planet gearing is made in block with output shaft (40). First (42), second (43), and third (44) supports are interposed between central pinions (25), (29), and (33) and carriers (27), (30), and (37), respectively.

EFFECT: simplified manufacturing and assembling of the electric drive.

cl, dwg

 

The invention relates to the instrument and can be used, for example, for a message rotational movement of the various mechanisms of aircraft both during normal flight and during testing, as well as the mechanisms used in the national economy.

Renowned drive to create torque, containing accommodated in the housing multi-stage planetary gearbox with sequential arrangement of steps and wheel internal gear, an output shaft in the form of a gear wheel with internal gear teeth, kinematically connected with the planet carrier of the previous stage satellites and the actuator [1].

The disadvantage of this drive to create torque is low efficiency due to large losses in a simple transmission.

Known chosen as the prototype of the drive to create torque, containing the first and second motor with a stator and a rotor, each having its own case, and accommodated in the housing of the actuator and gear, planetary gear with the output shaft and the differential planet carrier and the Central wheel, while the Central wheel has internal teeth, and the rotors are mounted through the first group of bearings each in his body [2].

Lack of drive to create a torque moment is a - prototype, and the analogue is low efficiency due to large losses in a simple transmission.

The objective of the proposed technical solution is to develop a drive to create torque more simple in manufacture and Assembly while increasing efficiency and reducing the axial dimensions.

The technical result is achieved in that the drive to create torque, containing the first and second motor with a stator and a rotor with bearings of the first group, and are accommodated in the housing of the drive gear, the planetary gear with the output shaft and the differential planet carrier, the satellites and the Central gears, one of which is fitted with a toothed clutch, unlike known that in the first and second motors introduced the shafts of the rotors, the stators of the first and second motors are rigidly connected to the housing of the actuator and the shaft of the rotor of the first electric motor mounted through the bearings of the first group on the basis of the rotor shaft second motor supported on the rotor shaft of the first motor through the bearing of the second group, while the rotor shaft of the first motor is connected to the first toothed coupling with the first Central gear, and the second Central gear is made hollow and through the second coupling connected to the wall of the rotor of the second electric motor and meshed with one of the n satellites differential, n=3, 4 ... i installed the driver differential, the first Central gear is installed in the cavity of the second Central gear and meshed with the other of the n satellites differential mounted on the driver differential, while some other satellites of the geared differential between themselves in pairs and mounted by means of bearings of the third group on the axes of the satellites of the differential, and the first Central gear is located between two spherical bearings, one of which is mounted on a base and the other on the driver differential, while one end of the carrier of the differential gear is installed in the housing through a bearing, and the other horses made at the same time with the Central gear of the first planetary gear meshed with k satellites of the first planetary gear, where k=3, 4 ... j, the driver of the first planetary gear side of the differential executed k ledges, on which, by means of bearings fourth group set k satellites of the first planetary gear, and on the other hand along with the planet carrier of the first planetary gear made of the Central gear of the second planetary gear carrier of the second planetary gear is made with the k projections on the side of the first planetary gear in which pose the STW bearing of the fifth group set k satellites of the second planetary gear, meshed with the Central gear of the second planetary gear, and on the other hand along with the planet carrier of the second planetary gear made of the Central gear of the third planetary gear, and the satellites of the first and second planetary gears meshed with the internal teeth of the common gear wheel rigidly connected to the housing, the carrier of the third planetary gear performed with k projections on the side of the second planetary gear, which, by means of bearings sixth group set k satellites of the third planetary gear meshed with the Central gear of the third planetary gears, and the bearings of the sixth group are installed in the holes formed in the driver the third planetary gear of the second planetary gear, and on the other hand took the third planetary gear made integral with the output shaft, supported by bearings of the seventh group support, satellites of the third planetary gear meshed with the internal teeth of the crown pillars, and between the Central gears of the first, second and third planetary gears and respectively measured including carriers of the first, second and third planetary gear placed first, second and third supports.

The third planetary gear encouraged to perform gapless, in which each satellite consists of two gears, one of which is made integral with the shaft, on the shaft through the bearings of the sixth group installed a second gear interacting through m springs, where m=1, 2, ... g, with the first gear through the teeth of the Central wheel of the third planetary gear and the teeth of the crown support, and springs mounted perpendicular to the shaft axis and at a given distance from it.

Structurally, the drive is made coaxially, which simplifies its manufacture and Assembly and reduces the axial dimensions. Execution of the third planetary gear floating due to the mounting of gears between a proposed way allows you to remove backlash between the satellites and support and, as a consequence, the angular backlash between the shaft and the output shaft.

The invention will explain with the help of graphic materials, which are:

figure 1 - General view of the proposed actuator to generate torque;

Fig 2 - extension element And the connection of the two motors);

figure 3 - remote element B (differential);

figure 4 - differential cross section G-G;

figure 5 - differential scanning for satellites;

figure 6 - external element (combination of three planetary PE is EDAC);

figure 7 - cross section of the gear of the third planetary gear set;

on Fig is a top view of the gear;

figure 9 - cross section of the spring D.-D.

The drive to create torque consists of the established on the basis of the 1 body of the actuator 2, in which two motor consisting of a rotor 3, 4 and stator 5, 6, respectively.

The rotor 3 of the first motor is mounted on the shaft 7 of the rotor of the first motor and is rigidly connected with the shaft 7 pin 8 (the rotor shaft is invited to perform hollow).

The shaft 7 of the rotor of the first motor is mounted on two bearings 9 of the first group, on the basis of 1.

The rotor 4 of the second motor is mounted on the shaft 10 of the rotor of the second electric motor is rigidly connected with the shaft 10 pin 11 (the rotor shaft is invited to perform hollow).

The shaft 10 of the rotor of the second electric motor supported on the rotor shaft 7 of the first electric motor by means of two bearings 12 of the second group is placed on the shaft 7 of the rotor of the first electric motor.

The stators 5, 6 of both motors are rigidly connected to the housing 2 by means of screws 13, 14.

The shaft 7 of the rotor of the first motor is connected to the first toothed coupling with the first Central gear 16, and the second Central gear 17 is made hollow and through the second coupling 18 is connected with the shaft mouth the RA of the second electric motor and meshed with one of the n satellites 19 differential (n=3, 4, ... i, in the above example, n=3)installed at the driver differential. The first Central gear 16 is installed in the cavity of the second Central gear 17 meshed with three other satellites 21 differential mounted on the drive rod 20 of the differential, while some other satellites 19 and 21 of the geared differential between the pairs. The first Central gear 16 is placed between the two spherical bearings 22 and 23, one of which is installed on the base 1, and the other on the drive rod 20 differential. One end of the carrier 20 of the differential is installed in the housing 2 through a bearing 24, and the other end made integral with the Central gear 25 of the first planetary gear meshed with k satellites of the first planetary gear, where k=3, 4 ... j.

On the drive rod 27 of the first planetary gear side of the differential executed k ledges, on which, by means of bearings 28 of the fourth group set k satellites 26 of the first planetary gear, and on the other hand along with the planet carrier 27 of the first planetary gear made of the Central gear 29 of the second planetary gear. Drove 30 second planetary gear is made with the k projections on the side of the first planetary gear, which, by means of bearings 31 of the fifth group set the ENES k satellites 32 of the second planetary gear, meshed with the Central gear 29 of the second planetary gear, and on the other hand along with the planet carrier 30 of the second planetary gear made of the Central gear 33 of the third planetary gear.

Satellites 26 of the first and 32 of the second planetary gear meshed with the internal teeth of the common gear-wheel 34, rigidly connected to the housing 2 by means of screws 35 and the finger 36.

Drove 37 of the third planetary gear performed with k projections on the side of the second planetary gear, which, by means of bearings 38 sixth group set k satellites 39 of the third planetary gear meshed with the Central gear 33 of the third planetary gear.

Bearings 38 of the sixth group are installed in holes formed in a drive rod 37 of the third planetary gear of the second planetary gear, and on the other hand took 37 of the third planetary gear made integral with the output shaft 40 mounted in bearings 41.

Satellites 39 of the third planetary gear meshed with the internal teeth of the crown bearing 41.

Between the Central gear 25 of the first planetary gear and the planet carrier 27 of the first planetary gear placed first bearing 42; between the Central neck is Terney 29 of the second planetary gear set and the planet carrier 30 of the second planetary gear placed second bearing 43; between the Central gear 33 of the third planetary gear placed third bearing 44. On the first, second and third bearings 42, 43 and 44 from the crowns are made of spherical protrusions that interact with measured including carriers 27, 30 and 37 of the first, second and third planetary gears respectively.

Between the bearings 9 of the first group of the first sleeve 45, the bearings 9 of the first group are held in the axial direction from one side ledge of the shaft 7 of the rotor of the first electric motor, and on the other hand - the first clamp nut 46. Between the bearings 12 of the second group has a second sleeve 47, the bearings 12 of the second group are held in the axial direction of the ledge of the shaft 10 of the rotor of the second electric motor, and on the other hand - the second clamp nut 48.

Between the bearings 57 of the seventh group installed a third sleeve 49, the upper bearing is locked to the third nut 50, which is connected by a threaded connection with the cap 51. Cover 51 are rigidly connected to the support 41 by means of screws 52.

Tooth clutch 18 is rigidly fixed on the shaft 10 of the rotor of the second motor using caps 53, 54 and rivets 55. The housing 2 is fixed on the base 1 through the first bolt 56.

The output shaft 40 rests on the support 41 by means of bearings 57 of the seventh group.

When this bearing 41 is rigidly connected the housing 2 through the second bolt 72.

From figure 3 it is obvious that some 19 and 21 other satellites are installed respectively on the axes 58 and 59, which are based on bearings 60 and 61 of the third group, between which are located the fourth sleeve 62, 63 (a total of six on the number of satellites), and the axis 58 and 59 are secured first and second screws 64, 65, respectively.

The third planetary gear train is made gapless, each satellite 39 which consists of two gears 66 and 67, one of which gear 66 is made integral with the shaft 68. On the shaft 68 by means of bearings 38 of the sixth group has another gear 67, interacting through m of the springs 69, where m=l,2,...g, with one gear 66, via the Central teeth of the wheels 33 of the third planetary gear and the teeth of the crown of the bearing 41, and the spring 69 mounted perpendicular to the shaft axis and symmetrically with respect to it.

One and the other of the gears 66 and 67 are fixed to each other in the following way: in one of the gears 66 has a third screw 70, the head facing the other gear 67 fixed on the opposite side of the third nut 71, the head of the screw 70 is made a hole into which is threaded one end of a tension spring 69, geared for the third screw 70 and the other end threaded into a hole made in the gear 67. Similarly performed two attachment of these gears.

In case 2, which is mounted on the base 1, two electric motors. When voltage is applied to the stator 5 of the first electric motor in the windings of the stator 5 is formed of an electromagnetic field, which interacts with the permanent magnets of the rotor 3 of the first motor, rotates together with the shaft 7 of the rotor of the first electric motor bearings 9 of the first group around the axis of the base 1.

The shaft 7 of the rotor of the first motor based on the base 1 by means of two bearings 9, which facilitates the rotation shaft 7 of the rotor of the first electric motor.

Bearings have advantages compared with sliding bearings: less friction at the time of the start and at moderate speeds; about 2-3 times less than the axial dimensions; easier conditions maintenance and lubrication; lower cost; interchangeable.

The bearings 9 facilitate rotation of the shaft 7 of the rotor and the alignment between the shaft 7 of the rotor and the stator 5 of the first electric motor.

The rotation shaft 7 of the rotor of the first motor is transmitted through the first coupling 15 on the first Central gear 16 differential, through which the axis 59 causes the rotation of the satellites 21 differential, from which the rotation is transmitted to the satellites 19 differential (consider the example with six satellites - three pairs), which, in turn, obca yaytsa around the second (hollow) of the Central gear 17 and rotate drove 20 differential speed 2 times smaller than the rate at which rotates the first Central gear 16. The rotation from the first Central gear 25 of the first planetary gear is transmitted to the satellites 26 of the first planetary gear, which obkatyvalisj by a common toothed wheel 34, transmitting the rotation through the tabs of the carrier 27 of the first planetary gear to the second Central gear 29 of the second planetary gear. The rotation of the second Central gear 29 of the second planetary gear is transmitted to the satellites 32 of the second planetary gear, which obkatyvalisj by a common toothed wheel 34, transmitting the rotation through the tabs drove 30 second planetary gear to the third Central gear 33 of the third planetary gear, and the rotation of the third Central gear 33 of the third planetary gear is transmitted to the satellites 39 of the third planetary gear that obkatyvalisj on the crown of the bearing 41, the transmitting rotation through shaft 68 on the carrier 37 of the third planetary gear and the output shaft 40.

When voltage is applied to the stator 6 of the second motor in the windings of the stator 6 is formed of an electromagnetic field which interacts with the permanent magnets of the rotor 4 of the second electric motor and rotates together with the shaft 10 of the rotor of the second e is extradigital on the bearings 12 of the second group around the axis of the shaft 7 of the rotor of the first electric motor.

The rotation shaft 10 of the rotor of the second electric motor is transmitted through the second coupling 18 to the second Central gear 17 of the differential, through which the axis 58 causes the rotation of the satellites 19 differential, from which the rotation is transmitted to the satellites 21 differential (consider the example with six satellites - three pairs), which, in turn, obkatyvalisj around the first Central gear 16 and rotate drove 20 differential speed 2 times less than the rate at which rotates the second Central gear 17. The rotation from the first Central gear 25 of the first planetary gear is transmitted to the satellites 26 of the first planetary gear, which obkatyvalisj by a common toothed wheel 34, transmitting the rotation through the tabs of the carrier 27 of the first planetary gear to the second Central gear 29 of the second planetary gear. The rotation of the second Central gear 29 of the second planetary gear is transmitted to the satellites 32 of the second planetary gear, which obkatyvalisj by a common toothed wheel 34, transmitting the rotation through the tabs drove 30 second planetary gear to the third Central gear 33 of the third planetary gear, and the rotation of the third Central gear 33 of the third planetary gear p is passing is transmitted to the satellites 39 of the third planetary gear, which obkatyvalisj on the crown of the bearing 41, the transmitting rotation through shaft 68 on the carrier 37 of the third planetary gear and the output shaft 40.

When applying a voltage of one polarity on the stators 5 and 6 of the first and second motors, the rotors 3 and 4 of the first and second motors will rotate in one direction and to transmit the rotation, respectively, through first and second gear clutch 15 and 18 simultaneously on the first and second Central gear of the differential 16 and 17, which via satellite 19 and 21 and their axes 58 and 59 will transmit the rotation of the Central gear 25 of the first planetary gear with a speed equal to the speed of rotation of the first and second Central gear 16 and 17 of the differential, from which rotation is transmitted similarly to the above-described sequence on the output shaft 40. When the output shaft speed is above 2 times than the speed when one of the motors.

Execution of the third planetary gear floating due to the mounting of gears between a proposed way allows you to remove backlash between the satellites 39 and the bearing 41.

The calculation showed that the system of three planetary gears increases the gear ratio, which in turn reduces the number of revolutions, and therefore leads to increased efficiency.

RAS is Motrenko application of the actuator, where, for example, set the platform given to them in the motion, is used to simulate rotational motions with different angular velocities of the different mechanisms of aircraft, and can also be used in industry, for example in the gym.

Literature

1. Kudryavtsev V.N. The planetary gear. - L.: 1966, s-248, Fig. 133 and 134.

2. RF patent 2065542, MPK F 16 H 3/44, publ. 20.08.96 prototype.

1. The drive to create torque, containing the first and second motor with a stator and a rotor with bearings of the first group, and are accommodated in the housing of the drive gear, the planetary gear with the output shaft and the differential planet carrier, the satellites and the Central gears, one of which is fitted with a toothed clutch, characterized in that the first and second motors introduced the shafts of the rotors, the stators of the first and second motors are rigidly connected to the housing of the actuator and the shaft of the rotor of the first electric motor mounted through the bearings of the first group on the basis of the rotor shaft of the second motor supported on the rotor shaft of the first motor through the bearings of the second group, while the rotor shaft of the first motor is connected to the first toothed coupling with the first Central gear, and the second Central sixth is Erna made hollow and through the second coupling connected to the shaft of the rotor of the second electric motor and meshed with one of the n satellites differential, n=3, 4, ... i installed the driver differential, the first Central gear is installed in the cavity of the second Central gear and meshed with the other of the p satellites differential mounted on the driver differential, while some other satellites of the geared differential between themselves in pairs and mounted by means of bearings of the third group on the axes of the satellites of the differential, and the first Central gear is located between two spherical bearings, one of which is mounted on a base and the other on the driver differential, while one end of the carrier of the differential gear is installed in the housing through a bearing, and the other end is made at the same time with the Central gear of the first planetary gear meshed with k satellites of the first planetary gear, where k=3, 4 ... J, the driver of the first planetary gear side of the differential executed k ledges, on which, by means of bearings fourth group set k satellites of the first planetary gear, and on the other hand along with the planet carrier of the first planetary gear made of the Central gear of the second planetary gear carrier of the second planetary gear is made with the k projections on the side of the first planetary gear, which group is the rotary bearing of the fifth group set k satellites the second planetary gear, meshed with the Central gear of the second planetary gear, and on the other hand along with the planet carrier of the second planetary gear made of the Central gear of the third planetary gear, and the satellites of the first and second planetary gears meshed with the internal teeth of the common gear wheel rigidly connected to the housing, the carrier of the third planetary gear performed with k projections on the side of the second planetary gear, which, by means of bearings sixth group set k satellites of the third planetary gear meshed with the Central gear of the third planetary gears, and the bearings of the sixth group are installed in the holes formed in the driver the third planetary gear of the second planetary gear, and on the other hand took the third planetary gear made integral with the output shaft, supported by bearings of the seventh group support, satellites of the third planetary gear meshed with the internal teeth of the crown pillars, and between the Central gears of the first, second and third planetary gears and respectively measured including carriers of the first, second and third planetary gear placed first, second and third supports.

2. The drive to create a torque according to claim 1, characterized in that the third planetary gear train is made gapless, with each satellite consists of two gears, one of which is made integral with the shaft through the bearings of the sixth group installed a second gear interacting through m springs, where m=1, 2, ... g, with the first gear through the teeth of the Central wheel of the third planetary gear and the teeth of the crown support, and springs mounted perpendicular to the shaft axis and at a given distance from it.



 

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