SU3646A1 - Squirrel cage closed loop rotor - Google Patents

Description

The squirrel-cage rotor with short-circuited rotor belongs to the rotors of the Plier grabbed by the short-flap ring of L1 € tall with high resistance. In FIG. 1 shows a pradol section of the rotor and a side view; FIG. 2 is the same, front view, FIG. 3 is a vertical section of a modified short-circuiting ring, FIG. 4 is a longitudinal section of a modified ring, and FIG. 5 is a front view of a rotor with a ring; FIG. 4. The front shorting ring L rota 8La izX) is made of a material with a high resistivity not .h, for example, “s 30/4. copper copper. The rotor rods B are soldered into the ring having a short section, with copper or silver solder, after which the ring is rotated so that the inner diameter of the ring is slightly smaller than the diameter of the circle along which the rods' axes are located. To obtain a smooth surface, the ring is polished from the inside, after which the entire inner surface of its ring is electrolytically silver, in order to avoid oxidation. Ring A is tightly screwed together with a lid 6 fitted with a gasket. It has a box-shaped profile (Fig. 1); pressed segments G from red copper are inserted into the groove of lid C. Segments O have elongated elongated holes with which they are put on pins F in such a way that each stick of the next layer is shifted; the number of pins f depends on the size of the rotor of the machine. The segments (i have a polished outer surface with a radius of curvature corresponding to the inner temperature of the ring, and are also covered with silver. The section of the ring A is taken from

It is calculated that the MOTT has razizizal the required initial rotary-glue MOAWHT.

When {does not rotate, the segments located at the top slightly lag behind the inner surface of the ring L, and the lower gfnlepayut, just under the weight of their own weight. If a motor is switched on, then due to the resistance of ring A, the rotor develops a corresponding initial torque, because, as the experienced motor has shown, the self-weight of the segment G does not give noticeable contact and does not produce short circuits of the rods due to extreme low voltage between the points of the ring vl.

As the number of revolutions increases, the segments, under the influence of price-phobic force, gradually begin to press toward the inner ring surface of the ring L with a force increasing proportionally to the increase in the number of motor turns, which causes a smooth closure of the rods K and ring A as short, i.e. Motor transition to normal mode. When the adyul motor speed is reduced daa'gly than the fl "segments, the inner surface of the ring L does not fall in proportion to the decrease in the number of revolutions but decreases, as the experienced motor showed, With a significant delay / But the pressure completely disappears after a full engine is expressed in shares from the Kunda. Yes; the appearance of the segments is calculated from the "height of the segments A, and the contact surface and cross-section along the width of the complex segments.

-Deutting and burning inside the surface. rings "r segments No, due to the fact that - under current (the source is filled, the disconnection is active when the stator is turned off, without current. The voltage between the unlocked rotor rods does not exceed a fraction of one volt and the closure of the ring) occurs with a parallel-connected ring 4- according to || this inner) 5c "of the stem et4) i.}

The ohmic resistance ring A can be replaced by a separate ohmic resistance ring / {fig. 3), rods of the same L rotor, insulated at the end with a thin layer of bakelite paper, are inserted into the ring. L, similar to ring A, but made of red copper or bronze.

The electrical and mechanical action of the modified device is the same as "described, with the difference that the ring / V is also inserted into the total cross section

 The proposed option is convenient for application to low power motors, where the selection of material for ring A with sufficient specific wear resistance is difficult.

FIG. 4 and 5 depict a variant, along cosorrzio G segments, replaced by a single whole ring M of red copper. After turning the ring is broken in two places obliquely, polished along the radius of the inner surface of the box 15 I1 and then silver.

The assembly consists in the fact that both half-screws KX-L M are inserted in t in the middle 4 and each half is screwed with two screws. Thus, their beds, under the action of centrifugal force, will be pressed against the rods of the barrel.

,:, The subject of the patent.

; 1 .. Xchot-closed rotor with a winding in the form of a squirrel wheel, made from (the grains of metal of the rotor grasped by rings of metal of great resistance from the iron of the rotor, characterized by the fact that the engine has a certain speed of winding rods under centrifugal force1 The Kp05ie short-circuited marked rings are still divided segments C, freely suspended by pins R. of the ring C, rotating together with the rotoipom .V., - v.;.;,; -.v ..; 2. , Modification of oxapaktepH3OBaH HCtrp In paragraph 1 of a squirrel-cage rotor, characterized by the fact that. The envelopes, which blindly winding rods, are made of spring copper springs and attached to ring A so that under the action of a circulatory force their ends can be pressed against the winding rods (Fig. 4, 5).

Fkgl

FIG. g

Fig 5