Planetary electric motor - reducing gear with controlled commutator

FIELD: electricity.

SUBSTANCE: present invention relates to electrical engineering and electromechanics, particularly to electric machines, and pertains to distinct features of design of a planetary electric motor - reducing gear with a lever for controlling the commutator. To increase excentricity of rotation of the commutator by several times compared to excentricity of the satellite - armature, the proposed planetary electric motor - reducing gear employs a lever for controlling the commutator. The proposed planetary electric motor - reducing gear has a planetary gear system in form of a friction pair or planetary reduction gear, the first step of which executes functions of the stator and satellite - armature of the electric motor. The commutator rotates synchronously with the satellite - armature. The stator and satellite - armature are fitted with solenoid coils, which shift the satellite - armature about the point of maximum entrance of teeth of the wheel and primary pinion of the planetary reduction gear into each other, or about the point of contact of the friction pair. The commutator, which can rotate excentrically about the housing, provides for phase shifting of the electromotive force of the electric motor and closes the solenoid coils of the stator and satellite - armature. The lever for controlling the commutator has different arms, the end of the shorter one of which engages the statellite - armature, and the end of the longer one enters the collector, providing for its rotation with excentricity, which exceeds excentricity of rotation of the satellite - armature. The commutator can be used with butt-end and cylindrical arrangement of contacts. The current input and output elements of the commutator do not rotate, they only oscillate.

EFFECT: improved operation of a planetary electric motor - armature, reduced spark formation of the brushes and electric arc from commutator contacts, as well as provision for wide regulation of frequency of rotation, torque and reversing the electric motor.

6 cl, 8 dwg

 

The invention relates to electromechanics, in particular to electrical machines, structurally associated with motors, and can be used as a drive widespread adoption. The result of the invention is the use of the motor-reducer with lever control collector that allows you to increase the eccentricity of rotation of the power distribution device (collector).

The planetary motor-gearbox with lever control header contains a two-stage planetary transmission in which the wheel with internal toothing is the stator of the motor and the gear outer toothed anchor motor. Power to the coils of the motor is made by the collector feed and discharge elements, shifting lever, as a result, the eccentricity of rotation of the collector is increased by several times compared with the eccentricity of rotation of the satellite-motor armature.

Known planetary motor-reducer for application No. 2005116565/09 (018900) of 31.05.2005, which gear wheel of the first stage planetary gearbox performs the function of the stator of the motor and gear - function satellite-armature, the axis of which is firmly seated end collector feed and discharge contacts. End collector bramae the Xia synchronously with the satellite-anchor, and their centers describe a circle with radius equal to the eccentricity of the satellite-anchor. Gear wheel and pinion are the coils of the electromagnets, which slip satellite-anchor relative to the point of maximum occurrence of the teeth to each other or relative to the contact point formed by them of a friction pair. End manifold of the motor, having the ability to rotate the eccentric relative to the axis of the housing, provides the offset of the phase of the electromotive force of the electric motor, powered coils of the electromagnets of the stator and satellite-anchor. The satellite gear-motor armature may be covered by a special material profile, able to be dressed to the teeth or part of a friction pair as cover and take them. In order to reduce vibration of the motor there is a tendency to reduce the eccentricity of rotation of the satellite-anchor (e.g., one millimeter), but such planetary motor-gearboxes have difficulty in placing the pins in the header and in the body of the brush holder with elektropodemom and outlet elements, thus there is a strong spark formation, and between the closely spaced contacts of the collector, rotating on a circle with a small eccentricity e, is the breaking of an electric arc between the poles of the current.

Offer the second planetary motor-gearbox with lever control manifold includes: in addition to the known gear wheels of the gear or friction pairs, performs simultaneously the function of a stator and a satellite-motor armature, the lever collector, increasing the eccentricity of the rotation only of the collector, that is, the power distribution device, and the vibration will occur in antiphase between the satellite-anchor and a collector, which contributes to the damping of the vibration motor. When this steel anchor motor is replaced by an elastic material (e.g. rubber or nylon) mounted him permanent magnets, creating torque output drive shaft through a friction pair or teeth, with the power distribution device can not rotate around its axis, but only the eccentric to shift alternately powered coil of the motor. In addition, there is a possibility to install gear or a friction pair of the planetary gears on the ends of the satellite anchors so that they function as bearings, while the body of the satellite, the armature and stator do not touch each other during operation.

Figure 1 shows the proposed planetary motor-gearbox with lever control manifold. The lever to its short end is in splined engagement satellite-anchor and makes rotation with a small eccentricity, and the long end is splined collector that will be the to have the eccentricity of the rotation several times greater than satellite-anchor. The ends of the levers and bearing are spherical or straight shape and ohvatyvayutsya respectively direct or spherical bearings.

Figure 2 - the same, the section a-A.

Figure 3 is a view along b-B with the imposition of a form of B'-B'.

Figure 4 - planetary motor-gearbox with lever control manifold. The lever is missing spline connection at the ends, while the collector has feed and discharge ring, located on the diameter of the collector, in which the center describes a circle with a radius large eccentricity (e1), and the collector can not rotate around its axis, but only to move down the contacts fixed in the spring tires. The contacts are connected with the coils of the motor, with feed and discharge rings are held against rotation by the springs.

Figure 5 - the same, In section-C.

Figure 6 is the same, the section (G-G) contact with spring tires.

Figure 7 is the same, the cross section (d-D) the supply voltage to the collector.

On Fig shows the motor-reducer, which has a toothed or friction pairs are installed on the ends of the satellite anchors, performing the function of the bearings, while the satellite-armature and the stator are installed so that they do not touch each other.

In case 1 (figure 1, 2 and 3) is the stator 2 with coils 3 electromagn the tov. The stator 2 has teeth 4 with internal toothing, which engages with the teeth 5 satellite-armature 6, which are the power wires 7 connected at their ends to each other. Satellite-anchor 6 teeth 8 is engaged with the teeth 9 of the spindle 10, rolling in a power driven shaft. Satellite-anchor 6 through the bearing 11 also affects the short end 12 of the lever 13, which is a spherical surface 14 rests on a spherical socket asterisks (washers) 15 and 16. The lever 13 by the second end 17 is engaged with the manifold 18, is pressed by a spring 19 to the cover 20 of the electric motor.

Due to the difference of the arms of the lever 13 small eccentricity e sat-motor armature is converted into a large eccentricity e1collector, allowing reliable placement of the brushes 21 and 22 with the wiring electrocaloric 3, and the feed network ring 23 and drain contact 24, which prevents the penetration of arcing and reduces sparking between the contacts 25 of the manifold 18 in comparison with electric motors, in which the collector is rotated with a small eccentricity E. the Lever 13 at the ends has a spline connection in contact with the bearing 11 and the collector 18, and the collector 18 is rotated synchronously with the satellite-anchor 6, but out of phase, quenching vibratory loads nm is the engine.

The motor-reducer shown in figure 4, 5, 6 and 7, the satellite-anchor 26 is made of steel, and of an elastic material (e.g. rubber or nylon), which is embedded in the plate 27 of the permanent magnet, and satellite-anchor may be inserted into the stator 2 without clearance or preload. When applying the same electric current in the winding coil 3 satellite-anchor 26 is pressed against one side of the stator 2 by setting the eccentricity e and the gap 28 in the opposite side of the stator 2, the internal cavity 29 satellite-anchor 26 will press tightly to the shaft 30, and the running-satellite-anchor 26 to the stator 2, the shaft 30 due to the friction force will also come into rotation, creating torque of the motor. The lever 31 can not be at the ends of the slots, during operation, it will not rotate around its axis, as a result, the reservoir 32 will not rotate, but only to shift, with its center point will describe a circle of radius e1. Feed and discharge rings 33 and 34 relate to the spring contacts 35 and 36 (6)attached to a leaf spring tires 37 and 38 (figure 4). Stroke spring tires 37 and 38 is adjustable limiters 39 (6), mounted on the movable disc, the result is governed by the number of spring contacts 35 and 36 closed at the same time on the rings 33 and 34 (figure 4). Voltage is applied to the rings 40 (7) and 41 (Phi is .4), from which it through the current collectors 42 and 43 is supplied to the rings 33 and 34. Rings 40 and 41 are held against rotation by the spring 44. The arm 45 is regulated by the position of the body 46 of the manifold 32, providing the change in shaft speed and torque, and is the reverse of the motor.

When applying to the windings of the electromagnets of the stator corresponding AC arm and the collector is not installed in the motor.

On Fig depicted planetary motor-reducer, in which the first and second stage gear posted on the ends of the satellite, the armature 47. To the thickened portion 48 satellite-anchor secures the removable gear 49, which rolls on a removable wheel 50 with internal gearing, forming the first stage of the reduction gear or a friction pair. Another thickened portion 51 satellite-anchor secures another removable gear 52, which with the wheel 53 forms a second step, in turn, the wheel 53 is transferred to the shaft 54 of the motor.

1. The planetary motor-reducer with a controlled reservoir containing a planetary transmission in the form of a friction pair or planetary gearing, first stage which performs the function of a stator and a satellite-motor armature, while the collector is rotated synchronously with the satellite, the armature and the stator and satellite-anchor provided by the coils of the electromagnets, see the replacement satellite-anchor relative to the point of maximum occurrence of the teeth of the wheels and gears of the first stage planetary gear into each other, or about the point of contact of the friction pair, the collector having the ability to rotate eccentrically relative to the housing, provides the offset of the phase of the electromotive force of the motor and causes the coils of the electromagnets of the stator and satellite-anchor, characterized in that it is provided with a control lever collector having different shoulders, the short end of which engages the satellite, the anchor and the end of the long part of the collector to ensure its rotation with the eccentricity greater than the eccentricity of rotation of the satellite-anchor.

2. The planetary motor-reducer with a managed collector according to claim 1, characterized in that the satellite-anchor made of elastic material such as rubber or nylon, mounted him permanent magnets.

3. The planetary motor-reducer with a managed collector according to claim 1, characterized in that the collector is made with a cylindrical arrangement of spring-loaded contacts and device regulation number mentioned spring contacts connected to the current-carrying and outlet collector elements.

4. The planetary motor-reducer with a managed collector according to claim 1, characterized in that the ends of the control lever collector is made with a spherical or straight surfaces that are covered, the COO is responsible, direct or spherical bushings that perform the function of the bearings.

5. The planetary motor-reducer with a managed collector according to claim 1, characterized in that it contains a movable body collector system management, and the collector has the ability to move synchronously with satellite-anchor, but in antiphase with him, to provide damping vibration, control shaft speed and torque, as well as for the implementation of the reverse motor.

6. The planetary motor-reducer with a managed collector according to claim 1, characterized in that the toothed or friction pairs of planetary gears mounted on the ends of the satellite anchors and function as bearings.



 

Same patents:

FIELD: electricity.

SUBSTANCE: invention relates to the field of electrical engineering immediately dealing with design of gear motors and electric drives and is to find application in robot and manipulator high-precision drives, ground and space navigation, machine-tool industry, transportation sector, oil-and-gas industries etc. The proposed electric drive based on resilient engagement planetary cycloidal reduction gear contains an electric motor and a reduction gear rigidly mounted on the electric motor shaft and transmitting rotation to the output shaft through the reduction gear bearings. Under the first version of the invention implementation the electric drive reduction gear design envisages central position of the resilient elastic engagement between the elastic satellite and the central wheels which solution ensures their backlash-free, noiseless and generally optimal operation and utilisation. When the electric drive is controlled by a continuously-operated or a discrete electric motor the resilient circular screwed engagements of the elastic satellite and the spring-loaded rollers continuously remain in a central optimally self-adaptive engagement. Under the second invention implementation version the electric drive is designed as equipped with a planetary cycloidal reduction gear with the electric motor output shaft represented by a spring-loaded rotor connected to the output shaft of the reduction gear whose satellite continuously remains in a central slide-fit engagement with the central wheels magnetically conductive convex profile. Magnetic interaction of the resilient spring-loaded satellite with the central wheels springs is designed to proceed within a closed magnetic circuit without air gap. The electric drive is designed to equally allow of operation as continuously controlled by an electric motor and as discretely controlled via electric pulses received from the control unit or a digital computer. The proposed design of electric drive based on resilient engagement planetary cycloidal reduction gear enables significant improvement of the device performance characteristics.

EFFECT: provision for transformation of the electric motor rotor rotation into backlash-free and noiseless rotation of the output shaft ensuring considerable amplification of torque and capacity.

7 cl, 7 dwg

FIELD: electrics.

SUBSTANCE: invention can be applied as electric drive in submarines, bathyscaphes, electric vehicles, satellite systems and other devices requiring large power at small drive dimensions. Planetary electric motor reducer includes stator, along which satellite armature is rolled. Satellite armature features internal cavity housing output shaft and transmission gear in the form of gearbox or special inflated tyres with pressure built up by compressed air or fluid and adjustable by valve device. Satellite armature rotation eccentricity is adjusted by pressure in tyres and affects transmission ratio of friction couple of the device within wide range.

EFFECT: reduced drive dimensions and weight due to combined performance of several functions by single units.

11 cl, 7 dwg

FIELD: mining.

SUBSTANCE: invention refers to driving facility for sprockets of chain drives, particularly to drive of scraper-chain transporters or chain plane knives for underground mine developments. Drive incorporates the asynchronous electric engine and a gear box. Also the asynchronous electric engine consists of an engine with feeding from a frequency converter, while there is an intermediary two-speed sprocket gear box in the driving block between an engine shaft and the gear box; the intermediary gear box is designed in particular as the front gear box with one starting and one normal stage, when by means of the latter starting effect in the starting stage can be achieved, which is required for starting of loaded scraper-chain conveyer or for free pulling of the chain plane knife.

EFFECT: regulating rotary speed and torque of asynchronous electrical engines.

22 cl, 3 dwg

Mini-actuator // 2321138

FIELD: electric engineering, mechanical engineering, possible use in drives of automatic control systems of aircrafts, robotic systems, antenna systems and other electro-mechanical power systems where mass and dimensions are of high importance.

SUBSTANCE: in the mini-actuator, which consists of electric motor, two-stepped wave transmission, stopper device, electric motor rotor position sensor, output shaft position sensor, body and supporting device, which are made concentrically and along the central axis of the mini-actuator, in accordance to the invention, the output shaft of the mini-actuator with rigid wheel (13) of output step of wave transmission is made in form of hollow cylinder (14) with end lid (15), upon which elements for attachment to object of control are positioned. The output shaft (13) is supported by solids of revolution, positioned on both sides of the electric motor. The solids of revolution (26), positioned on the side of end lid (15), constitute a radial bearing, and on the opposite side - act as solids of revolution (12) for the output step of the wave transmission. Solids of revolution are positioned on diameters which are close to external diameter of stator (1) of electric motor. Inside the radial bearing, formed by solids of revolution (26), the stopper device is positioned. Between the stopper device and the electric motor, the electric motor rotor position sensor is positioned. Also, on the side of output step of the wave transmission, output shaft position sensor is positioned in such a way, that its stator (18) is attached to separator (11), and rotor (19) is attached to outer side of the rigid wheel (13) of the output step of the wave transmission.

EFFECT: ensured capacity for use in broad range of bending momentums influencing the output shaft, small size, expanded functional capabilities.

4 dwg

FIELD: ground and space navigation, machine building, transport, petrogas industries.

SUBSTANCE: invention relates to geared motors and electric drives and it can be used in precision drives of robots and manipulators. Proposed electric drive with reduction gear contains electric motor with magnetoconducting rotor, reduction gear secured on electric motor shaft and transmitting rotation to output shaft through bearings of reduction gear. Magneto conducting rotor is provided with round screw concave slots along inner cylindrical periphery and it is in constant meshing with magnetoconduction wheel made in form of spring providing its connection into closed construction in form of torus by welding or soldering or by simple mechanical connector, or open one. Round screw concave slots of magnetoconducting rotor follow convex profile of coils of spring wheel. Rotation of rotor with considerable effort is converter into complex motion of spring wheel, longitudinal movement along axis of rotor and simultaneous rotation of spring wheel around axis of rotor.

EFFECT: improved technical and economic parameters of electric drive.

10 cl, 8 dwg

FIELD: electric engineering and electro-mechanical engineering, in particular, electric machines, particularly concerns features of structural realization of planetary electric motor - reducer.

SUBSTANCE: planetary electric motor - reducer contains body, positioned wherein are toothed gear wheel of planetary reducer and gear of planetary reducer, stator and rotor of electric motor, mounted eccentrically and connected to planetary reducer. In accordance to invention, in aforementioned device toothed gear wheel of first step of planetary reducer performs function of stator of electric motor, while gear of planetary reducer realizes function of satellite-anchor of electric engine, mounted on which is end collector with current-feeding and current-draining contacts, while end collector may move eccentrically relatively to body, toothed gear wheel - stator of electric motor has electromagnet coil and is made with internal engagement teeth, engaged with teeth of gear of satellite-anchor, having coils of other electromagnet, while teeth of internal engagement of gear of satellite-anchor are in contact with teeth of spindle, while aforementioned toothed gear wheel - stator of electric motor and gear of satellite-anchor of electric motor have grooves, positioned in which are coils of appropriate electric magnets, feeding of current into which creates torque and causes shift of satellite-anchor relatively to point of greatest mutual engagement of its teeth and teeth of toothed gear wheel - stator of electric motor, or relatively to contact point of friction couple formed by them.

EFFECT: improved mass-dimensional characteristics of planetary electric motor - reducer by means of combination of electric motor and planetary reducer in one structural unit.

4 cl, 6 dwg

Gear motor // 2285995

FIELD: electrical engineering; motor physical coupling with gear transmission.

SUBSTANCE: proposed motor 1 that can be used to drive air duct shutter in motor-car weather unit has cup-shaped frame 3 and disk-type rotor with commutator 4. Disk-type rotor is installed in frame 3 on sleeve 12 rigidly joined on one end with frame bottom 13. Rotor sleeve 11 is elongated so that butt-end of its first edge 14 is adjacent to frame bottom 12 and second edge 15 of sleeve 11 mounts gear wheel 16 which can be press-fitted thereon. Rotor commutator 4 is secured through its base 17 on outer cylindrical surface of sleeve 11 and rotor disk 6 carrying winding 18 is disposed on commutator 4. Motor frame 3 may be joined with gear transmission casing 21 on second edge 15 of rotor sleeve 11 so that gear wheel 15 mounted on sleeve 11 occurs within casing 21 and is brought in mesh with respective member of gear transmission 2. Output shaft 25 of gear transmission 2 is set in position affording its coupling, for instance, with shaft 26 of weather unit air duct shutter 27. Output shaft 25 of gear transmission 2 and shaft 26 of shutter 27 may be coupled through arm 28 of sensor 29 that generates signal indicating angular position of output shaft 25 or shaft 26 of shutter 27.

EFFECT: enhanced operating stability and maintainability of gear motor.

7 cl, 4 dwg

FIELD: electrical engineering and machine building, applicable in the drives of automatic control systems, robotics, high-precision and power mechanisms with hydraulic and electric motors.

SUBSTANCE: the power minidrive with a hydraulic motor has a wave regulator, hydraulic motor, power bearing and a body. The wave regulator has a rigid wheel made as a single component with the outer race of the power bearing, roller used as rollers of the power bearing, multirow separator made as a single component with the separator of the power bearing, wavemaker, representing rigid rings made as a single component with the inner race of the power bearing. The hydraulic motor has a stator in the form of a cylinder block with plungers, control motor, distribution device, working medium feed and drainage connections, connecting ducts, and a rotor representing rigid rings. The body is formed by a cover and a multirow separator of the wavemaker. According to the second modification, the power minidrive is made with an electric motor.

EFFECT: reduced overall dimensions.

2 cl, 4 dwg

FIELD: electromechanical engineering.

SUBSTANCE: proposed high-speed electrical machine has stator and rotor whose shaft journal is clamped by external rings of at least three bearings installed on eccentric axles coming in mesh with auxiliary-motor rotor. Free-running unit is introduced to prevent departure of mentioned parts from one another as they wear down that functions to control turn of auxiliary-motor rotor only in direction affording tightening of shaft journal bearings by external rings. Free-running unit that functions to reduce vibration and radial thrusts on bearings is made in the form of free-wheel clutch whose driven member is rigidly fixed on frame. Driving member is auxiliary-motor rotor. In the course of running rotor takes plays due to wear-down of contacting parts under action of torque.

EFFECT: enhanced reliability and enlarged service life of electrical machine.

2 cl, 2 dwg

FIELD: instrument industry.

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EFFECT: simplified manufacturing and assembling of the electric drive.

cl, dwg

FIELD: electricity.

SUBSTANCE: invention is related to electric engineering and may be used in electric machine industry, namely, in electromechanical power devices, in particular, in straight-running actuating electric mechanisms for movement of working elements of different machines and in the most different areas of machine building, metallurgy, etc. Straight-running actuating electric mechanism contains casing, on which electric motor is installed as well as screw with master and slave pulleys and drive belt, protective tube with front bushing, in which stem with power nut is installed with the possibility of longitudinal displacement. Induction limit switches are installed in the window of protective tube with the possibility of precise and independent tuning motion in parallel guides provided in the form of threaded pins and slots installed in the box. On external surface of stem opposite to every limit switch deepenings are provided that are displaced in relation to each other in angular and axial direction, and inclined flat - opposite to induction position sensor installed in front bushing.

EFFECT: increase of technological resources of straight-running actuating mechanism.

5 cl, 6 dwg

FIELD: engines and pumps, electrical engineering.

SUBSTANCE: two-speed transmission (100) comprises a planetary transmission incorporating input pulley (10) coupled with the input spider (20) and a sun gear (18) and gear wheel (17). Input spider (20) contains also a large number of planetary gears (15) arranged between the sun gear (18) and gear wheel (17). Sun gear (18) comes into mesh with the electromagnetic brake element (190). Gear wheel (17) comes into mesh with output pulley (30). Idling clutch (22) is arranged between input spider (20) and output shaft (31). Brake element (190) comes into mesh with the engine idling and gets out of mesh at ratios exceeding the idling speed. When brake element (190) comes into mesh, sun gear (18) does not run thus allowing gear wheel (17) and output pulley (30) to revolve at higher speed ccompared to that of the input pulley (10).

EFFECT: expanded performances.

24 cl, 14 dwg

FIELD: electrical engineering, applicable for imparting of a precision turn, rotary and oscillatory motions to various mechanisms within a wide range of angles and angular velocities.

SUBSTANCE: the electric drive has a step motor, whose shaft is coupled to the electric drive output shaft through a reduction gear. An additional motor is kinematically linked with the output shaft of the electric drive by a belt transmission, and the torque developed by it on the output shaft exceeds the friction torque on the output shaft, but it doesn't exceed the torque on the output shaft from the step motor. The electric drive control system has a DC voltage source, step motor with a stop motor control unit, additional motor with a selector switch of the direction of its rotation. The step motor control unit is provided with control outputs, and its input is connected to the DC voltage source. The additional motor is connected to an additional supply source via the selector switch of the direction of its rotation, and its control inputs are connected to the control outputs of the step motor.

EFFECT: expanded dynamic range of rotary speeds of the output shaft, enhanced reliability, precision of the rotary speed and provided a turn of the output shaft through the preset angle.

2 cl, 4 dwg

FIELD: electrical engineering, applicable for imparting of a precision turn and rotary motion to various mechanisms within a wide range of angles and angular velocities.

SUBSTANCE: the electric drive has a step motor, whose shaft is coupled to the output shaft through a reduction gear. An additional motor is kinematically linked with the output shaft by a belt transmission, whose belt envelopes the drive and driven pulleys located respectively on the shaft of the additional motor and an the output shaft. The torque developed by the additional motor on the output shaft exceeds the friction torque on the output shaft, but it doesn't exceed the torque on the output shaft from the step motor. The electric drive control system has a DC voltage source, step motor with a step motor control unit, additional motor with a selector switch of the direction of its rotation. A DC motor is used as the additional motor, it is connected via the selector switch of the direction of its rotation to the additional DC voltage source with a drooping volt-ampere characteristic. The second modification of the electric drive and of the system of its control provides for installation of the driven pulley on the output shaft of the step motor.

EFFECT: expanded dynamic range of rotary speeds of the motor output shaft of the electric drive, enhanced reliability, precision of the rotary speed and provided a turn of the motor output shaft through the preset angle.

4 cl, 4 dwg

FIELD: electric machinery, particularly electromechanical power equipment, for mechanical engineering, metallurgy and so on.

SUBSTANCE: mechanism comprises body. Electric motor, bearing-carrying screw with pulleys and driving belt and driving belt tension control means are arranged on the body. Protective pipe is located in the body. Installed in the protective pipe is bush arranged so that the bush may slide in longitudinal direction along guider inside the bush by means of rod with power nut and head. Dowel of rod rotation prevention means and bearing clamping nut are secured to inner surface of protective pipe. The bearings are connected to screw through intermediate bush. Mechanical retaining means, which fixes bearing clamping nut inside the body, is located on the bearing clamping nut. Protective pipe is provided with inductive end switches. Stops are inserted inside protective pipe from both ends thereof. Longitudinal groove, radial orifice and outer bead are provided in rod end. The outer bead may cooperate with the stops. Insert is introduced into longitudinal groove and radial orifice so that the insert encloses the dowel by side surfaces thereof. The insert is provided with projection arranged in dowel slot of power nut located inside the rod. Intermediate bush is made as an integral part and connected to screw by means of fixing member installed in place of any bearing installation.

EFFECT: increased reliability.

5 cl, 6 dwg

Motor-brake // 2287889

FIELD: electrical and general mechanical engineering; self-braking motors built around squirrel-cage induction motors.

SUBSTANCE: stator and rotor contacting surfaces of motor-brake built around squirrel-cage induction motor are provided with taper thread; rotor shaft is supported on one end by radial bearing and on other one, by thrust bearing with spacer disk affording cohesion between stator and rotor threaded surfaces during reverse movement of rotor; shaft extension of the latter is splined.

EFFECT: simplified design, enhanced reliability of brake-motor.

1 cl, 2 dwg

FIELD: electrical engineering.

SUBSTANCE: proposed face-type electrical machine has single-disk stator and single-disk rotor, as well as reliable built-in braking device affording motor stopping as soon as field winding is deenergized. Rotor disk is coupled with rotor shaft through splined joint admitting axial displacement of rotor disk relative to shaft. Braking device disposed on one of bearing end-shields of machine frame is equipped with adjusting members enabling desired positioning of rotor disk inside annular space of machine and adjustment of brake spring pressure. Shaped supports are used for installing stator core separated from rotor core by air gap which are rigidly coupled with stator core and are free to displace relative to bearing end-shield whereon they are all secured upon setting desired air gap.

EFFECT: reduced size, facilitated maintenance, enhanced operating reliability.

6 cl, 1 dwg

FIELD: electromechanical engineering.

SUBSTANCE: proposed high-speed electrical machine has stator and rotor whose shaft journal is clamped by external rings of at least three bearings installed on eccentric axles coming in mesh with auxiliary-motor rotor. Free-running unit is introduced to prevent departure of mentioned parts from one another as they wear down that functions to control turn of auxiliary-motor rotor only in direction affording tightening of shaft journal bearings by external rings. Free-running unit that functions to reduce vibration and radial thrusts on bearings is made in the form of free-wheel clutch whose driven member is rigidly fixed on frame. Driving member is auxiliary-motor rotor. In the course of running rotor takes plays due to wear-down of contacting parts under action of torque.

EFFECT: enhanced reliability and enlarged service life of electrical machine.

2 cl, 2 dwg

Motor drive // 2199175
The invention relates to the field of electrical engineering, namely to the motor drives the high voltage equipment

Electrical machine // 2358372

FIELD: electricity.

SUBSTANCE: invention relates to the field of electrical engineering immediately dealing with design of electrical machines; its implementation is to provide for transfer of torque, for example to the wheels of an electrically-propelled vehicle, mill roller or any other mechanism. The technical effect specified is due to the electrical machine being designed as containing the following components: a ring armature with a winding, an excitation winding and a collector electrode with brushes (all - mounted inside the housing), at least three gearwheels retaining the armature and mounted so that to enable rotation round their axles rigidly fixed inside the housing. Along the armature major diametre perimetre there are teeth arranged remaining in engagement with those of the gearwheels. The excitation winding forms a hollow toroid encasing the whole of the armature winding. The excitation winding acts as a dipole magnet with regard to the armature winding section encased by it. The collector electrode plates are arranged along the armature minor diametre perimeter attached directly to the armature winding coils.

EFFECT: enhancement of such parametres as performance, capacity, speed, acceleration and rotation uniformity combined with minimisation of the machine costs, weight, armature starting current and negative impact of magnetic field on human health.

9 cl, 5 dwg

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