SU1612357A1 - Multiple-pole d.c. torque motor - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to increase reliability, improve weight and size indicators and simplify the design. The windings of the core of a multipole DC torque motor are made of sections 1-18, serially interconnected, corresponding to the connection scheme of sections 1-18 of the winding of the core between themselves and with the collector plates 19-36. 3 Il.

Description

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The invention relates to electrical engineering and can be used in the creation of direct current drives,

The aim of the invention is to increase reliability, improve weight and size parameters and simplify the design.

FIG. 1 shows a schematic diagram of the proposed multi-pole DC torque motor (2p 16,,); in fig. 2 — coupling of the geometric dimensions of the brush-collector unit; in fig. 3 - the cross section of the proposed engine with a cylindrical version of the core.

The anchor winding of the proposed multipole torque motor of constant-0 current consists of uniformly 1 sprung core sections 1-18, each section takes an angle of 2ii / s radian, the sections are connected in series so that the ends of the ix sections are connected to the beginnings ( i + l) -x sections, so the end of section 1 is connected to the beginning of section 2, the end of section 2 is connected to the beginning of section 3, and so on, the end of section 18 is connected to the beginning of section 1. The beginning of sections 1-18 is connected to plates collector 19-36, number „j. brushes 39, 40, 47-49 leads to smaller ones, with the beginnings of sections with numbers i connected to the collector plates with numbers + s, i.e. the beginning of section 1 is connected to the collector plate 19, the beginning of section 2 is connected to the collector plate 20 etc. The working surfaces of the collector plates 19-36 are contacted by brushes 37-52 connected to current collector buses 53 and 54. The angular dimensions of the contact surface p of plates 19-36 are interlaminar gaps at the level of the contact surface of the brushes 37- 52 with collector plates 19-36 and the angle of coverage of the collector ka Each of the brushes 37-52 is selected so that at any angular position of the collector relative to the brushes, the possibility of closing the power source (not shown) connected to the current collector buses 53 and 54, as well as the loss of brush contact with one of the collector plates 19-36, is excluded. These conditions are satisfied by satisfying the inequality

.

The excitation flow in the engine is created by an inductor with 2p poles 55-70 alternating polarities fixed on the magnetic circuit 71. The motor armature can be made of a disk or cylindrical, without spacing or with an explicit gear structure, a variant of the engine design with an explicit gear structure of a cylindrical core is shown In this case, each of the sections -18 is mounted on its core (tooth), which is part of the core 72 core.

contact areas of these plates with the corresponding brushes, as a result of which the contact resistance of the collector-brush increases and the value of the currents decreases, the passage is 30 Shih across sections 3, 4 and 12, 13. At the angle of rotation of the core relative to the indicated position BI

2J.J. 16 -3

the brush 41 comes off the plate 23 and breaks the current circuit of section 4. Section 35 is in series with section 5, and the current in it begins to fall off, and the brush 49 comes off the plate 32 and breaks, similarly, the current circuit of section 13, which pa is connected in series with section 14, and the current in it starts to sp40

to give. When the angle of rotation of the cor eg

45

50

55

.2. 16 3

the brush 40 locates on the plate 23, and the brush 48 locates on the plate 32 and sections 4 and 13 are shorted brushes 40 and 48, respectively, the currents of the desired direction begin to increase in sections 5 and 14. Now the torque is created by sections 1-3, 5 -12 and 14-18, sections 4 and 13 are in current switching mode.

The proposed design of a multipole DC torque motor has a symmetrical about the axis of rotation of the core, the distribution of the electromagnetic forces of the interaction of the serrated core with the poles of the inductor, which eliminates one-sided pull, core vibration and, consequently, increases the reliability of the engine as a whole. Also in the proposed multi-pole, multipole DC torque motor works in the following way.

When connecting busbars 53

and 54 to the direct current source in sections 1-4.6-13 and 15-18, connected in parallel to each other, a current flows, the interaction of which with the magnetic field created by the poles 55-70 leads to the appearance of a rotating moment on the shaft

cor. Sections 5 and 14 are shorted by brushes 41 and 49 in contact with collector plates 23, 24 and 32, 33 to which these sections are attached and are in the current switching mode. When rotating the core with

fixed on it sections 1-18 and collector plates 19-36 with respect to the fixed poles 55-70 and brushes 37-52 in sections 1-18, the current direction changes, resulting in the direction of the torque

constant. The switching of sections, if the engine measles rotate in the direction shown by the arrow, is carried out in the following way. The offset of the collector plates 21-23 and 30-32 relative to

contact areas of these plates with the corresponding brushes, as a result of which the contact resistance of the collector-brush increases and the value of the currents decreases, the passage is 30 Shih across sections 3, 4 and 12, 13. At the angle of rotation of the core relative to the indicated position BI

2J.J. 16 -3

the brush 41 comes off the plate 23 and breaks the current circuit of section 4. Section 4 is in series with section 5, and the current in it begins to fall off, and the brush 49 comes off the plate 32 and breaks, similarly, the current circuit of section 13, which turns out to be connected in series with section 14, and the current in it starts the spa

to give. When the angle of rotation of the cor eg

.2. 16 3

the brush 40 locates on the plate 23, and the brush 48 locates on the plate 32 and sections 4 and 13 are shorted brushes 40 and 48, respectively, the currents of the desired direction begin to increase in sections 5 and 14. Now the torque is created by sections 1-3, 5 -12 and 14-18, sections 4 and 13 are in current switching mode.

The proposed design of a multipole DC torque motor has a symmetrical about the axis of rotation of the core, the distribution of the electromagnetic forces of the interaction of the serrated core with the poles of the inductor, which eliminates one-sided pull, core vibration and, consequently, increases the reliability of the engine as a whole. Also, in the proposed multi-polar DC motor, in the switching mode, there are always two core sections, which increases the motor torque and makes it possible to speak of an improvement in the mass and dimensions of the motor. A simplified connection scheme for the core winding sections and reduced the number of collector plates, which simplifies the design of a multi-pole DC torque motor as a whole.

Claims (1)

Claims. A multipole DC torque motor containing an inductor with 2p alternating polar poles, measles with S sections evenly distributed around the circumference, and a collector with plasma 52 56 Tins, to which the core winding sections are attached, characterized in that, in order to increase reliability, improve weight and size, and simplify the design, the core winding is made of sections connected together, each connected to a pair of adjacent collector plates, the number of which k is equal to the number of sections, and the angle o of the grip of the collector by the width y is determined by  + e. where in is the angle occupied by the insulation between the collector plates at the level of the surface of contacting w, em with the co-reflector. 37 38 .2 57 L 69 6b 7 61 eight 72 6i / 65 / J 66 Srig.d