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.
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 gear having driving and driven shafts mounted on the control shaft leading element made in the form of a multipolar permanent magnet, located concentric with him annular element of a nonmagnetic material with a through radial slots filled with conductive material, and covering the last gear element (patent RU №2082042, F16H 1/06, publ. 1997.06.20) - .
Its disadvantage is the 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 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) - .
Its disadvantage is a relatively small moment passed.
The technical result, which directed the claimed invention, is to improve the mass and size parameters, i.e. an increase in transmit power given a courier envelope the Ah gear.
The technical result is achieved that the magnetic gearbox with the rotor rapid rotation of the permanent magnet, the rotor slow rotation in the form of a hollow cylinder and the stator magnetic circuit and with teeth on its inner surface, introduced hollow cylinders, 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 associated with 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, differ within one pole of the dividing unit.
The essence of the claimed invention is illustrated by drawings, where:
Figure 1 - cross section of the magnetic gearbox;
Figure 2 is a longitudinal section of the magnetic gearbox;
Figure 3 - wave magnetic induction and scan hollow cylinders.
Here: 1 - permanent magnets, 2 - wedge-shaped pole pieces, 3 - dumb the magnetic sleeve, 4 - shaft fast rotating, 5 - magnetic circuit of the stator teeth, 6 housing 7 is a hollow cylinder stator 8 is hollow cylinders of the rotor slow rotation, 9 - slow shaft rotation, 10 - non-magnetic ring, 11 - non-magnetic disk.
The rotor rapid rotation has a rectangular vysokokoertsitivnye permanent magnets 1 (for example, samarium-cobalt or alloy Neodym-iron-boron), magnetized tangentially, wedge-shaped pole pieces 2 with a convex shaped surfaces facing to the working gap, and a non-magnetic sleeve 3 to fit on the shaft fast rotating 4.
The stator has an annular laminated magnetic core 5 with evenly spaced teeth facing to the working gap, and fixed to the body 6, which mechanically bonded non-magnetic ring 10 hollow cylinder 7, having alternating ferromagnetic and non-magnetic elements. The rotor slow rotation is a hollow cylinder 8 which is mechanically associated with the shaft slow rotation 9 non-magnetic disk 11 and having alternating ferromagnetic and non-magnetic elements.
The angular sizes of all teeth and ferromagnetic elements are hollow cylinders are the same. Magnetic elements are hollow cylinders, which are connected with the stator, have angular position coinciding with the angular position of the teeth of the magnetic circuit of the stator. The number of ferrom gnity elements are hollow cylinders, associated with the stator and rotor slow rotation, differ within one pole of the dividing unit.
A magnetic gear operates as follows. The permanent magnet 1 of the rotor rapid rotation and pole pieces 2 create in the working gaps sinusoidally distributed magnetic induction. The first maximum value of the magnetic induction is achieved in the middle of the pole pieces. In the working clearances in front of the means of permanent magnets of the radial component of the magnetic induction is zero.
When the rotor rotation fast rotation speed ω1wave magnetic induction rotates with the same angular velocity. When this hollow cylinders associated with the rotor slow rotation, in the absence of load torque will occupy a position in which in the zone of maximum magnetic induction module ferromagnetic elements are hollow cylinders 8 occupy an angular position coinciding with the angular position of the hollow cylinder 7 and the teeth on the magnetic circuit of the stator 5. In the zone of neutrals ferromagnetic elements are hollow cylinders 8 are located opposite the non-magnetic elements are hollow cylinders 7 and the slots of the magnetic core 5.
When the rotation of the rotor rapid rotation on one pole division of the slow rotor rotation will turn on one subzone division. The ratio Magnitogorskaya equal to the number of ferromagnetic elements are hollow cylinders of the rotor slow rotation, per one pole division.
Figure 3 shows wave magnetic induction B(β) and the reamer bushings. The teeth of the magnetic circuit of the stator 5 and the ferromagnetic elements of the hollow cylinder 7 is stationary. In the zone of maximum amplitude of the magnetic induction all ferromagnetic elements and the teeth are located against each other.
In areas of neutrals, corresponding to the midpoints of the magnets 1, the ferromagnetic elements are hollow cylinders 8, associated with the rotor slow rotation, are located opposite the non-magnetic elements of the hollow cylinder 7 and opposite the slots in the magnetic core 5. When the rotor rapid rotation will turn on one pole division, the poles N and S will be swapped, and the hollow cylinder 8 rotates through one ferromagnetic element (subzone division). Figure 3 shows the case when the gear ratio is 8, i.e. the rotor slow rotation rotates at a speed
Time passed on the slow shaft rotation is determined by the formula
The lack of gear is the elasticity of transmission. 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, silent in the works is, has a long service life, defined by bearings that allow the shock load, since the communication between the shafts through the magnetic field, and the introduction of hollow cylinders allows to increase the transmitted torque while maintaining size.
A magnetic gear with the rotor rapid rotation of the permanent magnet, the rotor slow rotation in the form of a hollow cylinder and the stator magnetic circuit and with teeth on its inner surface, characterized in that it introduced hollow cylinders, in turn mechanically connected to a rotor of slow rotation and the stator, the permanent magnets of the rotor fast rotating magnetized tangentially and counter and are located between the wedge-shaped pole pieces, a hollow cylindrical stator and rotor slow rotation have 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 associated with 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, differ within one pole of the dividing unit.
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
SUBSTANCE: invention relates to electrical engineering and may be used as electromechanical converter of mechanical power supplied to the mechanical input of the machine and electrical DC power supplied to the other electrical input of the machine to the total electrical AC power. The two-dimensional axial electric machine-generator contains armature with winding and brush-commutating set of DC machine. The rotor is implemented with squirrel cage winding. The armature and rotor can freely rotate with regard to each other and are axial. In addition, AC generator winding is coiled in the armature grooves with the output being connected to AC mains by means of the three contact rings and three brushes.
EFFECT: summation and conversion of mechanical power, for example wind power, and electrical DC power, for example solar power supplied from photoelectric converter, to electrical power of phase direct current but with more stable output parameters as compared to conventional electromechanical converters.
SUBSTANCE: present invention pertains to electrical engineering and can be used in parametric machines in the electrical energy industry as electric generators and electric motors, for example on electrical power stations. The synchronous generator-compensator is a combined electrical machine, the circuit of which has an electronic frequency converter, with power corresponding to an asynchronous motor. On one axle of the synchronous generator-compensator there are series-arranged rotors of the drive motor, synchronous generator with a thyristor-type self-triggering system, and the asynchronous motor with a short-circuited rotor. The rotor of the asynchronous motor is in form of a flywheel with a large diameter, radius R and mass, which matches up the radius r and mass of the rotor of the synchronous generator, respectively, calculated using the mechanical resonance formula. The ratio R/r is chosen in accordance with the Fibonacci number sequence. The output of the synchronous generator and the input of the stator of the asynchronous motor are connected through a frequency converter, supplying the asynchronous motor with current, with discrete synchronisation of the frequency of current from the synchronous generator and frequency of the angular impulse of the asynchronous motor. The circuit of the frequency converter has massive capacitors, with provision for mechanical positive feedback from the rotor of the asynchronous motor to the rotor of the synchronous generator due to the single axle of the rotor of the asynchronous motor and the synchronous generator. The rotor of the asynchronous motor has ratio of the width to its radius in accordance with the Fibonacci number sequence, in succession to the chosen ration R/r. The diameter of the asynchronous motor is increased, corresponding to the rotor, with provision for clearance between the stator and the rotor of 1-3 mm. The method of operation of the synchronous generator-compensator is implemented, as is described in the material of the claim.
EFFECT: increased fuel saving in the drive motor, due to increase in moment of inertia on the system axle.
3 cl, 3 dwg
SUBSTANCE: invention can be used as electromechanical converter of mechanical energy delivered to one machine input (mechanical) and dc electric energy simultaneously delivered to its other input (electrical) into integrated dc electric energy. In electrical machine containing armature with winding and brush-collector unit of dc machine and rotor with short-circuited winding, over rotor winding of asynchronous motors that are able to rotate around each other, according to this invention a generator winding is additionally laid in armature slots. Output of this winding is connected by means of contact rings and brushes with net of alternating current consumers.
EFFECT: implementation of summing and converting of mechanical and dc electrical energy into electrical energy with simultaneous improvement of electrical energy parameters stability at output.
SUBSTANCE: rotor winding is performed as rotor windings of asynchronous machines with phase rotor in the circuit of which three-phase full-wave regulating thyristor rectifier unit is included. At that, output of this rectifier unit is connected in series with armature circuit using keys of switch unit that is able to perform either serial-additive or serial-subtractive connection with armature circuit depending on sign of armature rotation frequency change direction.
EFFECT: providing control for output rotation speed of two-dimensional electric machine and for frequency of generated by it voltage when input signals are continuously and indeterminantly varying.
FIELD: electrical engineering and power-driven transport; driving vehicles of all kinds.
SUBSTANCE: proposed electrodynamic propulsion unit has inductor, armature, and ac power supply. In addition, it has electronic device with three pairs of electrodes. Inductor is made in the form of wound magnetic circuit with armature-accommodating gap. One of windings is connected to armature; leads of other winding are connected to polarizing electrodes. Its midpoint is connected to cathode and grounded. Its symmetrical taps are connected to orthogonal electric field electrodes and in phase opposition, to polarizing electrodes. Third winding is connected to ac power supply and through voltage changer, to electric arc electrodes, and also through capacitors, to second-winding leads.
EFFECT: reduced cost; reduced adverse effect of electromagnetic field onto environment; enhanced efficiency.
1 cl, 1 dwg
FIELD: electrical engineering.
SUBSTANCE: proposed energy conservation electric drive that can be used for rotary boring, measurement of liquid discharges through large-diameter pipelines, and pump delivery regulation in main pipelines has at least one ac squirrel-cage actuating motor incorporating two independent windings of which one is connected in delta and other one, in star; three-phase generator that functions as three-phase power supply coupled with prime mover, such as diesel engine or electric motor; and automation system incorporating rectifier for varying parameters of dc current from control system, its output being connected to leads of three-phase generator inductor windings, as well as comparison device that generates control signal and is connected through its output to rectifier input and through inputs, to controlled variable setting element and sensor installed on controlled entity, such as on motor shaft. Eliminating operating instability zone and enhancing shaft starting torque, as well as extending range of shaft speed variation have made it possible to improve mechanical characteristics of electric drive.
EFFECT: enhanced efficiency and operating reliability, reduced mass and maintenance charges.
7 cl, 4 dwg, 1 tbl
SUBSTANCE: car control device comprise steering wheel (3) coupled with first element (4) that supports second element (13) to drive gears (16) running on axles (17, 18) to transfer motion to turn controlled front wheel (7). Second element (13) is coupled with LH and RG gears (16) running on LH and RD axles (17, 18). One ends of the latter are bent off at 90° with respect to axles and have sliding contact with first element (4). Other ends of axles (17, 18) are coupled with casings (19, 20) furnished with rolling bearings (21, 22) fitted on axle (23) supporting controlled front drive wheel. Tire of aforesaid wheel can have spherical central part (11), while its edges can have support triangular ledges (12) to provide for car stability in turning to the right or left. Proposed device can be used in three-wheeled car with one controlled front wheel (7), two rear driven wheels and streamline body.
EFFECT: higher maneuverability and stability on turns.
2 cl, 3 dwg
FIELD: mechanical engineering.
SUBSTANCE: invention refers to mechanical engineering and serves to transmit rotary motion with rotation frequency conversion and corresponding change in torque moment. The transmission contains case (1), driving three-angle rotor (2) and driven crank arm (6). Working surface of case (1) is made as epitrochoidal contour inside which three-angle rotor (2) with pin (3) for alignment with radial guide (4) of carrier (5) is located. In the rotor (2) body, the crank arm (6) is set coaxially. The crank arm is made eccentric relative to integrated with it cup (7) which has common axis with contour centre and carrier (5). Radii of cup (7) and crank arm (6) interrelate as 2:3 and their eccentricity is equal to half of cup (7) radius. The rotor (2) is in uninterrupted contact with epitrochoidal contour by its all three tops. Contact area of driving rotor (2) force impact on driven crank arm (6) is constant and is equal to half of crank arm cylindrical surface.
EFFECT: increase in loading capacity, durability and efficiency factor of mechanical transmission.
FIELD: engines and pumps.
SUBSTANCE: invention is related to devices with gear engagement of any type, for instance reducers. Gear drive with high-strength teeth is created by two nonstandard gear wheels (1,2), which have standard active profile and diametre of pitch circle, less than standard number of teeth determined by ratio of pitch circle diametre to module. Number of gear rings is more than one and is equal to ratio of angle pitch of nonstandard wheel teeth to angle pitch of appropriate standard wheel teeth rounded to larger integer number. Identical active profiles of teeth of neighboring rings of nonstandard wheels are displaced at the angle that provides for overlap factor of more than one common for wheel rings. Helical rings may create a single gear ring.
EFFECT: makes it possible to create gear drive wheels with number of complete profile teeth of one and more, and also eliminates or considerably reduces fatigue damage of teeth.
FIELD: mechanical engineering.
SUBSTANCE: invention relates to mechanical engineering, and can be used in driving systems of aircrafts. Reduction parallel-shaft gear unitop contains n-pairs of tooth gears (2) and pinion gears (3). Each of pairs allows its reduction rate. All pinion gears (3) are implemented with the same number of teeth. Wheels (2), starting from the second pair from input of reduction gear, allows the same number of teeth and forms with pinion gear (3) reduction rate, equal to 2.4. Wheel of the first pair allow number of teeth, forming with pinion gear reduction rate, required for implementation of any specified value of reduction rate of whole reduction gear.
EFFECT: such implementation of drive provides simplification of structure and reduction of reduction gear mass.
FIELD: mechanical engineering.
SUBSTANCE: invention relates to gear transmission and can be used in precision engineering. Gear contains co-axial fast-speed and low-speed shafts, installed in case (3), rigid gear wheel (10), installed on output shaft (2), separator (9), rigidly fixed in case (3), rollers installed in separator (9) with ability of movement in radial direction and spinning motion, and rigid thrust ring (7). Thrust ring (7) is fixed on inner ring of bearing (6), installed on input shaft (1) with shift relative to shaft axis. Gear wheel (10) allows cycloidal profile.
EFFECT: such gear implementation provides improved reliability of operation and increasing of gear lifetime.
SUBSTANCE: reduction gear comprises spindle (11), which passes substantially perpendicular to carrier (12) and arranged with possibility of radial deviation from initial position under load. Spindle and carrier have support surfaces (23, 24) in shape of substantially truncated cone, normal lines to which pass substantially through centroid of spindle protruding part. In initial position of spindle there is a gap between support surfaces.
EFFECT: increased sensitivity to balancing of common load.
8 cl, 4 dwg
SUBSTANCE: eccentric planetary gear of internal engagement is intended to transform rotation speed with transmission ratio in the range of 5-100 for one step. There is central wheel (6) of internal engagement installed with teeth in the form of pin teeth (16) and planetary block (14) with teeth of cycloidal shape engaged with pin teeth. Rotation of planetary block (14) is transmitted to outlet shaft with the help of central (4) with fingers (5), which interact with open cuts in the form of circular arc on periphery of planetary block. Planetary block is arranged with single crown of complex shape, which has cycloidal tooth profile on one side, and on the other side tooth has a profile made of circular arcs. Number of cycloidal teeth is equal or multiple to number of teeth made of circular arcs. Profiles are outlined with curves that in case of combination in single plane lie one inside another without crossings.
EFFECT: increased strength and simplified technology of planetary block manufacturing.
3 cl, 9 dwg
FIELD: machine building.
SUBSTANCE: invention is related to machine building, in particular to planetary gears. Planetary gear comprises composite carrier (7), which consists of satellite block (8) and hub (9), which are connected to each other by compensation unit arranged in the form of splined joint. Satellite block (8) consists of two jaws (10, 11), which are rigidly connected to each other by means of links (12). Sections of splined joint are installed on links (12) between jaws (10,11) and on external surfaces of hub (9) crown sectors in annular volume (21), which is limited by central wheels (1,4) and jaws (10,11) of satellite block.
EFFECT: increased reliability and durability of planetary gear, due to balancing of load in length of contact lines of toothed gears of satellites with central wheels and between satellites.
FIELD: mechanics, machine engineering.
SUBSTANCE: invention relates to machine engineering and is intended for planetary gears with high transmission ratio in one stage and small dimensions. The planetary gear mechanism includes housing (18), spider formed by two rigidly connected discs (19 and 20) and doubled satellites (3). Each satellite consists of two identical crowns turned around with regard to each other (27, 28 and 29, 30) correspondingly. The crowns (27, 28) of satellites (3) are engaged into driving central wheel (1) of external gearing. The external gearing is also implemented as stepped and consists of two identical crowns turned around with regard to each other (25, 26). The crowns (25 and 26) have one profiled tooth in the shape of eccentrically offset circle. The crowns (27 and 28) of satellites (3) have cycloid profile forming eccentrically cycloid gearing, which is provided with transmission ratio increased in several times under otherwise equal conditions. The crowns (29, 30) of satellites (3) are implemented as single-toothed eccentrics. The crowns (29, 30) interact with crowns (31 and 32) of the second central wheel of inner gearing and implemented on the inner surface of housing (18).
EFFECT: eccentrically cycloid gearing in both lines of planetary mechanism allows for increasing transmission ratio to a greater extent avoiding dimensions change.
2 cl, 8 dwg
FIELD: mechanical engineering.
SUBSTANCE: invention refers to mechanical engineering and can be implemented at development of rotary mechanisms. The tooth ring gear with internal engagement has teeth (1, 2) which are made in form of projections on face surfaces of the rim of a sprocket and a wheel. Working surface of teeth (2) of the wheel has a flat profile. The teeth (1) of the sprocket are made in form of bodies of rotation, the own axis of each of them is parallel to the axis of sprocket rotation.
EFFECT: simplification of technology, reduction of fabrication cost, increase of reliability, serviceability and service life of gear.
FIELD: mechanical engineering.
SUBSTANCE: planet gear has input shaft with eccentric , race, and satellites.
EFFECT: improved design.
2 cl, 8 dwg