SU48766A1 - Device for driving machine guns - Google Patents

Description

This proposal develops the essence of the invention according to the author's testimony K9 42629 of the same author in the direction of using the arc stator to obtain a synchronous speed of various machine tools with a cylindrical rotating system.

The advantages of the arc stator in their general form are that it represents the greatest opportunities to integrate with it to the rotating body of the working machine, to obtain an arbitrary synchronous speed, to regulate, when necessary, this speed, to reduce the lifting magnetic force of such a stator pressure, wear and loss friction of the main bearings of the working machine itself or other magnetic regulation of the mechanical forces acting on the rotating body of the maschine. These structural, kinematic and many other features of the arc stator create the prerequisites that are necessary for the electrical rotation of the working machine and the engine.

This electrical device, being an asynchronous machine by its electromechanical nature, requires, however, always the smallest interstitial space.

Meanwhile, there are many cases where, due to beats, vibrations, are lacking;

exact, concentricity and other similar operating conditions of the rotating body of the working machine, the allowable inter-iron space between the active surface of the arc stator and the machine body it rotates must be taken more or less significant in order to avoid the rotor touching the stator.

In addition, in many cases, especially at high power, the operation of the electric drive in the synchronous compensator mode, i.e. with leading currents, is rational.

According to the present invention, the rotating body of the working mash is its iron cylindrical rim, its cross, shaft, bearings and other parts serve as parts of the rotor of a synchronous motor, the stator of which is an arc stator attached to the iron rim with an alternating current winding.

The physical prerequisite that makes it possible in principle to transform the rotating body of a working machine is the fact that the rotor of a synchronous motor is not subjected to variable magnetization in its normal operation and can therefore be made of not massive, but massive iron.

I ll.

f h

There is a finished product in the rim of the rotating body of the first working machine.

In FIG. 1, 2 and 3 depict

K -1 is a variety of design options for such a device.

In the first embodiment (FIG. 1), in the same f rim / rotating body

; d - evenly distributed along the rim circumference of the pole projections-teeth 2, which are worn

mSgiHf

coils 3 excitation windings. Polyus iii; The tips 4 may in one case be cut along with the pole

i teeth in the iron rim of the display, the state body of the working maschina, and in other cases can be made separately

Iff and then attached to the pole holders of the stupas 2. This design variant is expedient when the iron rim of the rotating member of the working maschine is of sufficient thickness to allow the necessary

mn are the depths of the cuts that form the pole feN:; - th system on this rim. In some cases, rims with such cuts

f lS; --- 5 tVi:, -. It will be rational to get not by machining, but by cast.

kSH It is clear that these cuts should be on

WW for its length is not greater than that part of the axiF. - ::

4 i the size of this rim, which

liir.

inductively interacts with the nyroBbiM stator.

In the second embodiment (Fig. 2), separately manufactured pole cores 2 with tips and with exciter winding coils worn on them 5 are screwed to the cylindrical iron rim 7 of the rotating work organ. The length of these poles is determined axially; a measure of the arc stator interacting with them. The diameter of the curvature of the core at its junction with the rim is determined by the diameter of this rim, and the height of the pole, determined by the conditions

FSiTii; rational placement of the excitation winding, gives the source data for determining the diameter of the curvature of the arc stator for each given working mask.

To obtain the necessary initial torque and the self-starting of the new electric drive, the usual short-circuited winding is used.

The direct current is supplied to the excitation winding of the working mask, as usual, through brushes and slip rings placed on the shaft.

Depending on the relative positioning of the working maschine, in some cases the inner surface of the rim of the rotating organ of the working mash can be selected as electrically active, and in these cases the arc stator should be placed inside this specified organ.

It should be noted that arbitrary angular speed and the possibility of small-scale regulation at a given frequency of this speed, which for some groups of working machines are the main kinematic prerequisite for the practical implementation of their electrical splicing with the engine, is lost by the electric drive with a synchronous speed the circumference of the rotor zone of the working area will cause jolts and make impossible the synchronous operation of such a rotor zone. This minus excludes the possibility of using this electric drive in all those cases when the number of revolutions per minute required for the rotating body of the working masch is more or less far from the nearest synchronous number of revolutions obtained using the well-known formula

It should be noted, however, that since the capacities for which the electric drive under consideration can be rational, are relatively large, and the working maschines that require such large capacities, we have in most of their types non-fast, and the difference between the two adjacent synchronous speeds more decreases towards slower speeds, it is obvious that for many groups of working masses the kinematic constraints we have indicated will turn out to be practically insignificant.

The lifting magnetic force of the arc stator and the possibility of its use

.. in order to reduce pressure, friction and ee, the nose in the main bearings of the rotating body of the working machine is kept at the synchronous electric drive and W even slightly increased by the fact that the permissible induction in the gap is higher than that of the asynchronous electric. ; water.

The arc stator of a synchronous electric drive, having a smaller design value with the same useful power

 The value of the consumed kilovolt-amperes and a slightly higher value of the magnetic induction in the gap will obviously be lighter in weight than the stator with an asynchronous electric drive. However, in terms of copper consumption in the rotor zone, significant advantages remain for

; last, because here each element of the Bielichi cells of the rotor zone is surrounded by a current only for some

parts of each rotation of the rotor zone; (only during the passage of this element under the arc stator) and this circumstance makes it possible to mean. Closely reduce sections of squirrel cage elements. At the rotor zone of a synchronous electric drive, the current flows around at any given moment the entire winding of the rotor zone of the machine; besides, the ampere turns of this winding are much larger and, finally, there is a damper on the rotor, which, on the other hand, is a starting winding.

A third variant of the device under consideration is also possible (Fig. 3). Here, on a cylindrical iron rim / rotating body of the working machine (flywheel, drum, wheel), permanent magnets 2 of alternating polarity, uniformly distributed around the circumference of this rim, are made using one of the known methods. At present, there are materials and magnetization methods, in which it is possible to obtain permanent magnets with the necessary induction of sufficient stability.

In the considered variant of the specified motor device, adjusting and setting it for. work

With a predetermined power factor, it can be produced by an appropriate approximation or separation of the arc stator from the active surface of the permanent magnets.

In the synchronous motor device under consideration, the interval of possible adjustment of the gap is relatively large, since the nominal, that is, the initial absolute value of the gap, which is 6-8 times larger than that of the asynchronous system of the new electric drive, is also large.

Approaching the arc stator to the poles on the rim of the rotating body will change the power factor in the same direction as the increase in the excitation current in previous versions of the device, and the distance of the arc stator from the poles, i.e., the increase in the gap will give in relation to cos

the very same as reducing the excitation current.

Compared to the synchronous electric drive variants, where the rim of the rotating blade carries DC-powered poles, the considered variant of the synchronous electric drive with permanent magnets has the following differences: a) copper costs for the excitation winding and no joule losses in it and b) the causative agent, rings and slip rings are excluded.

The consequence of this is an increase in the coefficient of efficiency, reduction of heating, simplification of the design of the new electric drive and increase in its reliability by eliminating current-carrying elements in the rotating body of the working machine.

The subject matter of the invention.

Claims (4)

1. The form of the device according to paragraphs. 1-3 of author's certificate No. 42629, characterized in that, in order to obtain a synchronous number of revolutions of a working or transmission cylindrical body of the machine, the latter is equipped with a pole system, which together with the iron forms a cylindrical rim magnetic circuit of the rotor. 2. The form of the device according to claim 1, characterized in that the pole projections, made separately, are fixed on the rim of the said machine body or are formed from the rim body by supplying the latter evenly recesses located around the rotor circumference, obtained either directly during the casting or with the help of milling. 3. Use in the device according to p. I as a pole system fortified by a rim of a rotating organ No. $ 1 w -f li.: | W-ish ;; - I :: i,.: 1st: 1: II111 ilip ;; v;.,; t., -. li | . alternating polar permanent magnet machines. 4. Application in the device according to claims. 1-3, with a view. adjusting the power factor of it, movable in the radial direction of the arc stator or its individual parts. and agnites alternateK (eastpopp.1-3, and the coefficient kkyh in radialugo stator or FIG. 2 Hip “The Pit. Zeke. 994-LC) author's certificate of M. A. Fridkin J 48706 d3.r.i ,.