Magnetic reducer

FIELD: electricity.

SUBSTANCE: magnetic reducer comprises a stator with a magnetic conductor, having teeth, alternating hollow cylinders of the stator and rotor of slow rotation with ferromagnetic and non-magnetic elements, and a rotor of fast rotation with ferromagnetic and non-magnetic elements. At the same time, according to the invention, the magnetic reducer comprises a fixed inductor of magnetic field, arranged outside the tooth-slot area, and the number of ferromagnetic elements of the rotor of fast rotation is equal to the difference of the number of ferromagnetic elements of hollow cylinders of the stator and rotor of slow rotation. Due to availability of non-magnetic rings in the reducer, which connect hollow cylinders of the stator with the magnetic conductor of the stator, and a sealing disc, the reducer is made with tight separation of fast and slow rotation rotors cavities and as capable of torque transfer to a tight volume, and manufacturer of a fast rotation rotor in the form of a hollow cylinder made it possible to improve dynamic characteristics.

EFFECT: development of a reducer with tight separation of cavities of fast and slow rotation rotors, in which there is possibility to transfer torque into a tight volume, improved dynamic characteristics of a contactless magnetic reducer.

2 dwg

 

The invention relates to electromagnetic mechanisms, and particularly to a contactless magnetic gears, and can be used as transfer devices in mechanical systems with a long service life under shock loads.

The known magnetic gearbox with the rotor rapid rotation of permanent magnet rotor slow rotation in the form of a hollow cylinder and the stator magnetic circuit and with teeth on its inner surface (ed. mon. No. 280142, NC 51/00, publ. 26.08.1970. Bul. №27) - [1].

Its disadvantage is a relatively small moment passed.

Closest to the proposed invention to the technical essence and the achieved effect is a magnetic gear with the rotor rapid rotation, the rotor slow rotation in the form of a hollow cylinder and the stator magnetic circuit and with teeth on its inner surface, a hollow cylinder, in turn mechanically connected to a rotor of slow rotation and the stator, the rotor rapid rotation includes permanent magnets, magnetized tangentially and counter, and a wedge-shaped pole pieces, hollow cylinders are alternating ferromagnetic and nonmagnetic elements parallel to the axis of rotation, the angular sizes of all teeth and ferromagnetic elements are hollow cylinders are the same, the magnetic elements are hollow cylinders, connections the data from the stator, have angular position coinciding with the angular position of the teeth of the magnetic circuit of the stator, and the number of ferromagnetic elements are hollow cylinders, which are connected with the stator and rotor slow rotation differs within one pole of the dividing unit (patent No. 2369955, NC 51/00, publ. 10.10.2009. Bul. №28) - [2].

Its disadvantage is the lack of a hermetic separation of the cavities of the rotors fast and slow rotation, which does not allow to pass the time in the pressurized volume.

The technical result, which directed the claimed invention, is to create a gearbox with a hermetic separation of the cavities of the rotors fast and slow rotation with torque transmission in a sealed volume, and improved dynamic performance.

The technical result is achieved that the magnetic gearbox containing a stator with a magnetic core having teeth, alternating hollow cylinders of stator and rotor slow rotation with ferromagnetic and non-magnetic elements and the rotor rapid rotation of ferromagnetic and non-magnetic elements introduced fixed inductor magnetic field outside Zubovo-groove zone, and the number of ferromagnetic elements of the rotor rapid rotation is equal to the difference in the number of ferromagnetic elements are hollow cylinders hundred the ora and slow rotor rotation.

The essence of the claimed invention is illustrated in figure 1-2, where:

Figure 1 - cross section of the magnetic gearbox;

Figure 2 is a longitudinal section of the magnetic gearbox (a-a).

Here: 1 - body, 2 - magnetic core of the stator, 3 - pole, 4 - coil, 5 - hollow cylinder rotor slow rotation, 6 - hollow cylinder stator 7 is a hollow cylinder rotor rapid rotation, 8 - internal magnetic circuit of the stator, 9 - disc sealing, 10-11 - non-magnetic ring stator 12 is nonmagnetic disk fast rotation, 13 - non-magnetic drive slow rotation, 14 - slow shaft rotation, 15 - Val rapid rotation.

The stator has an annular laminated magnetic core 2 with evenly spaced poles 3 (1), addressed to the working gap and having small teeth, and fixed to the body 1, which is mechanically connected non-magnetic ring 10 hollow cylinder 6 of the stator with alternating ferromagnetic and non-magnetic elements. To him nonmagnetic ring 11 is fastened the inner magnetic core 8 of the stator with the sealing disk 9.

The rotor slow rotation is a hollow cylinder 5, mechanically associated with the shaft 14 of the slow rotation of the magnetic disk 13 (2) and having alternating ferromagnetic and non-magnetic elements.

The rotor rapid rotation is a hollow cylinder 7, mechanically associated with the shaft 15 fast rotations is of non-magnetic disk 12 and having alternating ferromagnetic and non-magnetic elements.

The inductor creates a magnetic field, can be made in the form of poles with windings, through which DC current is flowing, or in the form of permanent magnets. In both cases, the inductor fixed.

The angular sizes of all teeth and ferromagnetic elements are hollow cylinders of stator and rotor slow rotation of the same. The ferromagnetic elements of the hollow cylinder 6, associated with the stator, have angular position coinciding with the angular position of the teeth of the magnetic circuit of the stator. The number of ferromagnetic elements are hollow cylinders, which are connected with the stator and rotor slow rotation, differ within one pole division by two.

The hollow cylinder 7 of the rotor rapid rotation has two ferromagnetic element on the pole division.

A magnetic gear operates as follows. 3 pole windings 4 create a stationary magnetic field. When the rotor rotation fast rotation of the ferromagnetic elements of the hollow cylinder 7 create a wave of magnetic induction, in the area of the peaks which ferromagnetic elements are hollow cylinders of stator and rotor slow rotation are opposite each other. In the speed of rotors fast and slow spins connected by the relation

where ωm, ωb- speed rotors low and high speeds of rotation z m, zbthe number of ferromagnetic elements on the hollow cylinder low and high speeds.

The transmission torque of the gear is elastic. When increasing the load torque on the shaft slow rotation it lags at some angle from the position corresponding to idling.

A magnetic gear has no mechanical contact between moving parts, it does not wear out, quiet in operation, has a long service life, defined by bearings that allow the shock load, since the communication between the shafts through the magnetic field.

The rotors slow and fast rotation are hollow cylinders with small axial moments of inertia. In this regard, a magnetic gear allows large angular acceleration.

Because the rotor rapid rotation has a small mass, the moment of friction in the bearings is small and the magnetic gear may work as a multiplier, i.e. to transfer mechanical energy from the shaft a slow rotation to the shaft fast rotating.

The presence of non-magnetic rings, connecting hollow cylinders with the stator, and the sealing disk allows you to completely isolate zones shaft fast and slow rotation from each other, which is important when working magnetic gear in aggressive or explosive environments.

A magnetic gear containing stator magnetic circuit, having teeth, alternating hollow cylinders of stator and rotor slow rotation with ferromagnetic and non-magnetic elements, and a rotor quick spins with ferromagnetic and non-magnetic elements, wherein the entered fixed inductor magnetic field outside Zubovo-groove zone, and the number of ferromagnetic elements of the rotor rapid rotation is equal to the difference in the number of ferromagnetic elements are hollow cylinders of stator and rotor slow rotation.



 

Same patents:

FIELD: electricity.

SUBSTANCE: axial cascade electric drive comprises two coaxially connected electric motors, besides, magnetic systems of two electric motors are made axial and are arranged in one body and on a common shaft, which is horizontally fixed in bearing units of the body, besides, by one side the stator of one electric motor is rigidly connected to the body, and on its other side between the three-phase winding and the shaft hole there are coils of controlled couplings, which are located oppositely to two rings of large and small diameters from a non-magnetic material, a rotor arranged on the bearing, at the other side of which there are ring-shaped slots, the free space of which is filled with a ferromagnetic powder. At the same time, according to the invention, the rotor of the other electric motor is arranged on the bearing and has a ledge in the form of a wide thin ring from the same material as the rotor itself, and enters the slot of the large diameter of the rotor of the other electric motor, providing when connected to the network of one coil of the controlled coupling rigid connection of the rotor of one electric motor with the rotor of the other electric motor, the stator of which is rigidly connected with the shaft, besides, between the rotor of one and rotor of the other electric motor there is a metal part arranged rigidly in the form of a hollow sleeve, with the ledge entering the slot of small diameter of the rotor of one of electric motors, providing when supplying voltage of the supply network to the other coil of the controlled coupling the rigid connection of the rotor of one of electric motors with the common shaft, which is the output one, and on the rotor of the other electric motor there is a ledge of magnetic material, which enters the body of the ferropowder coupling fixed on the body of the electric drive, besides, additionally comprising a current pickup device, the fixed part of which is rigidly fixed on the body of the electric drive, and the movable part is installed on the shaft and supplies electric energy for the widing of the stator rigidly connected to the shaft.

EFFECT: invention provides for getting high speeds of rotation, close to a double rated one at rated value of the torque value, or getting a double torque at rated speed of rotation for a different range of capacities of an electric drive with simultaneous increase of such drive operation reliability.

2 cl, 1 dwg

Magnetic gear // 2474033

FIELD: electricity.

SUBSTANCE: magnetic gear comprises the following components installed coaxially on a single shaft: a rotor of quick rotation with permanent magnets and pole tips, on the other shaft by means of a non-magnetic disc there is a rotor of slow rotation installed in the form of at least one hollow cylinder, a stator comprising a magnetic core with teeth on its inner surface and at least one hollow cylinder mechanically connected by its one end to the body via a non-magnetic ring, permanent magnets of the rotor of quick rotation are magnetised tangentially and oppositely and are arranged between wedge-shaped pole tips, hollow cylinders of the stator and rotor of slow rotation have alternating ferromagnetic and non-magnetic elements, directed along the axis of rotation, at the same time the gear is equipped with a bearing shield installed on the shaft of the rotor of quick rotation and tightly and mechanically connected to the other end of the hollow cylinder of the stator arranged between the rotor of quick rotation and the hollow cylinder of the slow rotation rotor.

EFFECT: possibility to tightly separate cavities of rotors of quick and slow rotation, improved conditions of accurate assembly and operation of rotors of quick and slow rotation.

3 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention refers to cascade electric actuators of rotational movement, which consist at least of two asynchronous motors of the same type, and can be used at creation of electric actuators with controlled rotation speed from nominal to double nominal at constant moment, or actuators with double moment at constant nominal rotation speed, as well as at creation of other types of electric actuators. Controlled cascade electric actuator includes two electric motors coaxially installed in housing, each of which consists of rotor and stator; besides, stator of the first electric motor is fixed on housing, and its rotor is fixed on its shaft; fastening rings two of which are fixed on the housing, and the other one is fixed on shaft of the first electric motor, electromagnetic clutches fixed on the housing of electric actuator, three-phase power supply system; rotor of the second electric motor is movable and installed so that it can be freely rotated relative to its shaft, and stator of the second electric motor is fixed on its shaft. Fastening ring rigidly fixed on housing of controlled cascade electric actuator on which there installed are three fixed friction semi-clutches one of which has the possibility of being pulled in order to fix the friction gasket (installed on the first shaft) of its movable semi-clutch sliding along splined recesses of electric motor shaft with freely rotating rotor; the other semi-clutch has the possibility of being pulled in order to fix to the same friction gasket of its semi-clutch entering the cavity of housing of movable rotor, which is coaxial to the above semi-clutch, and the third semi-clutch has the possibility of being pulled in order to fix to the other friction gasket fixed on the electric actuator housing of its semi-clutch entering the cavity of movable rotor housing, which is coaxial to the above semi-clutch.

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3 cl, 1 dwg

Energy accumulator // 2456734

FIELD: electricity.

SUBSTANCE: accumulator contains a vacuumised housing, a fly-wheel in the form of a vertical cylindrical tubular rotor with a motor generator set with a stator and a drive disc. The support system is composed of a needle support bearing with a bearing socket in the lower part and a magnetic bearing with a permanent magnet in the upper part of the rotor. The supports rotary elements are attached to the partitions installed inside the rotor tube at a certain distance from its butt ends. The horizontal plane passing through the boundary of interaction between the support rotary and non-rotary elements cross the rotation axis in the unit of the rotor axle bend shape at the operating rotation rate. The accumulator housing is installed into an accumulator assembly.

EFFECT: reduction of aerodynamic losses in the vacuumised housing and losses in the rotor support units.

2 cl, 6 dwg

FIELD: electric engineering.

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1 dwg

FIELD: electricity.

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FIELD: electricity.

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5 cl, 3 dwg

FIELD: electricity.

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Magnetic reducer // 2369955

FIELD: electric engineering.

SUBSTANCE: invention is related to electric engineering, to electromagnet mechanisms, and more specifically, to contactless magnetic reducers, and may be used as transmission device in mechanical systems with high resource of operation under impact loads. Magnetic reducer has rotor of fast rotation with permanent magnets (1), magnetised tangentially, wedge-like pole tips (2) with convex profiled surfaces inverted to working gap, non-magnetic bush (3) for fitting onto shaft of fast rotation (4). Magnetic core (5) with evenly installed teeth inverted to working gap, is fixed to body (6), with which hollow cylinders (7) are mechanically connected by non-magnet ring (10), which have alternating ferromagnetic and non-magnet elements. Rotor of slow rotation represents hollow cylinders (8) mechanically connected to shaft of slow rotation (9) by means of non-magnet disk (11) and has alternating ferromagnetic and non-magnet elements. Due to introduction of hollow cylinders of stator and rotor of slow rotation, magnetic reducer is produced with high transmission torque from alternating ferromagnetic and non-magnetic elements.

EFFECT: improvement of mass and dimensional parameters.

3 dwg

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and is meant for generating electrical energy using an electromechanically actuated contra-rotating generator. A rotor and the contra-rotating generator are connected by two oppositely rotating disc rotors larger than the radius of a high-speed linear motor. Two oppositely rotating steps in form of double blocks are formed, lying coaxially and with a common axis of rotation. The inductor of the high-speed linear motor is immovably attached to the housing of the device and transmits counterrotation with angular acceleration to secondary elements through steps. As a result of this opposite rotation, two velocities and two moments are combined. The method is safe and cheap. The device is distinguished by high reliability, high power at low weight, low price, easier manufacture and operation.

EFFECT: increased power and efficiency.

2 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: planetary-lantern reduction gear includes housing (1), bearing (2), rollers (3), eccentric (7), epicycloidal teeth (6), and outlet pulley (5). The outlet pulley is installed on bearing (2) moulded into the housing. Epicycloidal teeth (6) are made on the inner side of the housing. Rollers (3) are freely installed between projections (4) of the outlet pulley, which are uniformly located in a circumferential direction, so that they can be rolled along epicycloidal surface of the housing teeth, being in contact with cylindrical surface of eccentric (7) that is installed in the housing with the axis displacement in relation to the housing axis. The eccentric surface can be made from the material with elastic properties.

EFFECT: invention allows simplifying the reduction gear design owing to decreasing the number of parts and improving manufacturability of parts.

2 cl, 2 dwg

Planetary gear // 2482349

FIELD: machine building.

SUBSTANCE: planetary gear includes satellite (2) installed on an eccentric shaft, central swivel wheel (4) of internal toothing and intermediate disc (8) connected to flange (6) with central swivel wheel. Intermediate disc (8) is made in the form of mutually perpendicular radial projections (11) combined with central inner ring (9), which interact with side surfaces with projections (13, 14) made on end surface of satellite and on end surface of the flange. Satellite is kinematically connected to another flange that is oppositely installed relative to the first one and also movable relative to the central swivel wheel by means of an intermediate disc similar to the first one; flanges are rigidly attached to "П"-shaped frame (5) enclosing the central swivel wheel.

EFFECT: increasing the gear efficiency and stiffness.

4 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: proposed device comprises gages 13, 14. Every said gage comprises hollow base 15, 16, locking screw 19, 20 and cylindrical rod 17, 18 for axial displacement, rotation and fixation relative to base 15, 16. Drive wheel base 15 of gage 13 has inner location surface 23, collet part 24 and end base surface 25. Driven wheel base 16 of gage 14 comprises two concentric cylindrical location surfaces 26, 27 and end base surface 28. Skew flat cut is made on ends of both rods 17, 18. Flat lengthwise cut on rod 17, 18 coincides with its axis and skew flat cut to make end face surface perpendicular to axes 21, 22 of rods 17, 18. End face surface forms parallel ribs with lengthwise and skew cuts one of which is a working rib.

EFFECT: high-precision assembly of orthogonal and out-of-plane bevel gearing.

8 dwg

FIELD: machine building.

SUBSTANCE: method for assembling bevel gear consists in adjustment of space position of driving (2) and driven (3) gears with the help of adjustment rings (3, 8) to provide alignment of pitch cone tops in space point (10) and provision of quality control of contact of gear teeth working surfaces and side gap between them. For this purpose there measured are the sizes L1 and L2 from base planes of driving and driven bevel gears to the tops of their pitch cones. Then they are compared to the allowed values. Instead of the said wheels there mounted are gauges (13, 14) of driving and driven gear. Axial loads, set by value and direction, are created. There defined is a mutual position of gear axes (11, 12) and the value of their deviation from each other, compared it to the permissible one. There calculated are the thicknesses L3 and L4 of adjustment rings (3, 8). Bevel gearing is assembled with them.

EFFECT: invention allows increasing the accuracy of assembling orthogonal and non-orthogonal bevel gears, improving processibility and excluding multiple assembling-disassembling of the gears.

3 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: operating method of electric drive with planetary reduction gear consists in transfer of torque moment from inlet shaft (4) to outlet shaft (20) by means of in-series installed high-speed (6), medium-speed (7) and low-speed (8) planetary rows with toothed gearings. Rotation of medium-speed carrier (16) is performed so that it can be self-adjusted by means of flexible elastic axis (24) with an insert in the form of at least one bellows (28), one end of which is rigidly attached to the above carrier (16), and the other one is installed on the support in body of low-speed carrier (17). Bending of the bellows is performed with restriction of its expansion along the reduction gear axis. Interaction between medium-speed carrier (16) and low-speed sun gear (11) is performed with radial and side gaps, not less than the product of engagement modulus (m) by 0.4.

EFFECT: invention allows increasing efficiency and improving reliability of the method.

2 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: operating method of three-stage planetary reduction gear consists in transfer of torque moment from electric motor (1) to outlet shaft (23) by means of three in-series installed planetary rows (6, 7, 8), the interaction between which in axial direction is performed through axial supports (20, 21) arranged between gear (10) and carrier (16) of medium-speed row (7), as well as at the end of gear (11) of low-speed row (8). Axial supports (20, 21) made in the form of balls are arranged in inserts (26, 27, 28); their simultaneous axial spring loading is performed by means of springs arranged in channels of gears of medium-speed and low-speed rows. Elastic force of springs is adjusted with screws (33, 35), one of which (33) is located in the channel of gear of medium-speed row (7) and directly contacts spring (31). The second screw (35) is located in the carrier of low-speed row on the side of outlet shaft (23), and has a groove on the side of contact with the axial support to interact with the support. Adjustment screws, inserts, axial supports and springs are located in the centre of rotation axes of reduction gear carriers.

EFFECT: invention allows improving accuracy and operating reliability of electric drive and reducing overall dimensions.

3 dwg

FIELD: machine building.

SUBSTANCE: operating method of three-stage planetary reduction gear consists in transfer of torque moment from high-speed shaft to low-speed shaft through three in-series installed planetary rows (6, 7, 8), the interaction between which is performed by means of toothed gearings. Interaction between high-speed carrier with medium-speed sun gear and medium-speed carrier with low-speed sun gear is performed by means of couplings (24, 25), with barrel-shaped teeth, with central axisymmetrical multiple-sided holes, into which ends of medium-speed and low-speed sun gears are installed. Rotation of carriers of medium-speed and high-speed planetary rows is performed in ball bearings (46, 47), the internal rings (44, 45) of which are detachable. Some parts (48, 49) of each detachable ring (44, 45) are made as an integral part of the carrier, and other parts (50, 51) are made in the form of detachable rings, and attached to each other.

EFFECT: invention allows increasing efficiency and improving operating reliability of the device, as well as reducing its overall dimensions.

2 dwg

FIELD: machine building.

SUBSTANCE: electric drive with three-stage planetary reduction gear includes electric motor (1) connected to inlet shaft (3) through pre-step (5), high-speed (6), medium-speed (7) and low-speed (8) planetary rows. Connections between high-speed carrier (15) and medium-speed sun gear (10) and medium-speed carrier (16) and low-speed sun gear (11) are made in the form of couplings (24, 25) with central axisymmetrical multiple-sided holes (26, 27), into which ends of medium-speed and low-speed sun gears are installed, and with barrel-shaped teeth. Couplings are fixed against axial movement by means of stop rings (36-39) on both sides of couplings. Internal rings (44, 45) of ball bearings (46, 47) of medium-speed and high-speed carriers are detachable. Some parts (48, 49) of each detachable ring are made as an integral part of the corresponding carrier, and other parts (50, 51) are made in the form of detachable rings.

EFFECT: invention allows improving accuracy and reliability of the reduction gear operation, as well as its weight and overall dimensions.

2 dwg

FIELD: machine building.

SUBSTANCE: electric drive with three-stage planetary reduction gear includes electric motor (1), reduction gear including inlet shaft (4), pre-step (5), high-speed (6), medium-speed (7) and low-speed (8) planetary rows. Each row includes sun gear (9, 10, 11), satellites (12, 13, 14), carrier (15, 16, 17) and crown (18, 19). High-speed carrier (15) is provided with support (23) on the side of electric motor and as an integral part with intermediate sun gear (10). Outlet shaft (20) is made as an integral part with low-speed carrier (17) and installed on two ball bearings (21, 22). Medium-speed carrier (16) is made as an integral part of axis (24) that is installed on the side of outlet shaft (20) in radial ball bearing (25) fixed in body of low-speed carrier (17). Axis (24) consists of two parts (26, 27) connected by means of an insert in the form at least of one bellows (28), and with internal support element (29) located along its axis. Medium-speed carrier (16) is provided with internal gear rim (36).

EFFECT: invention allows increasing efficiency and improving reliability of the device.

4 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: electric drive with three-stage planetary reduction gear includes electric motor (1), reduction gear with high-speed (6), medium-speed (7) and low-speed (8) planetary rows. High-speed carrier (15) is made as an integral part with medium-speed sun gear (10) and with support (22) on the side of electric motor. Medium-speed carrier (16) is made as an integral part with low-speed sun gear (11). Low-speed (outlet) shaft (23) is made as an integral part with low-speed carrier (17) and installed with a support on two radial ball bearings (24, 25). Axial supports (20, 21) between medium-speed sun gear (10) and medium-speed carrier (16) and between low-speed sun gear (11) and low-speed carrier (17) are spherical and equipped with their inserts (26, 27, 28) with hardness that is higher than hardness of carriers with possibility of being moved in direction of the axis coinciding with carrier rotation axis. Inserts are spring-loaded. Adjustment screws are provided for spring force adjustment.

EFFECT: invention allows improving accuracy and reliability of the device operation, as well as its weight and overall dimensions.

4 cl, 3 dwg

Planet gear // 2244181

FIELD: mechanical engineering.

SUBSTANCE: planet gear has input shaft with eccentric , race, and satellites.

EFFECT: improved design.

2 cl, 8 dwg

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