SU845808A3 - Solenoid-type electromagnetic device - Google Patents

Abstract

1504873 Electromagnets SIMMS GROUP RESEARCH & DEVELOPMENT Ltd 18 Feb 1975 [26 Feb 1974] 8606/74 Heading H1P An electromagnetic device comprises a pair of relatively movable magnetizable members, and a winding or windings carrying an energizing current to produce relative movement of the members; a magnetizable core member 10 (Fig. 1) being secured by a threaded stud to a support 11, and a cup-shaped member 12 retained by the stud locating a magnetizable annulus 13 about the core while permitting limited relative axial movement between the members which are mutually located by a sleeve 12a at the opposite end. Slots are provided exteriorly of core 10 and interiorly of annulus 13 in the form of, e.g. 2 start interengageable threads permitting mutual axial movement and defining helical slots 14, 15 of the core and interengaging helical projections 16, 17 of the annulus. Continuous insulated windings 18, 19 are disposed in one slot from the stud end to the sleeve end, through aperture 20, and back in a reverse direction along the other slot. The projections of the core and the annulus have respective radial side faces 21, 22 and inclined side faces 23, 24 which on de-energization are disposed adjacently in parallel to leave gaps therebetween. Energization of the windings generates an additive flux operative to urge the members together and to reduce the gaps between faces 21, 22; thereby producing a mechanical force. The windings may comprise two distinct turns in series or parallel (Fig. 3, not shown) or four turns (Fig. 6, not shown). The annular member may be lightened by machining off surplus material (Fig. 4, not shown) and the slots may be reduced in size and filled with copper (Fig. 5, not shown). A pair of multiple windings may be provided in each slot (Fig. 7, not shown) of which one is continuously energized to provide base flux and the other is selectively energized for operation. The windings may be disposed in the internal slots of the annulus as well as in the external slots of the core, with an annular member movable therebetween having projections positioned in the slots of the annulus and the core respectively (Fig. 8, not shown); the windings being energizable together for single action or separately for double action. The peripheral surfaces of the core and the annulus may be axially slotted to increase flux penetration. Two electromagnetic devices as described may be connected back to back for double action, and to reduce rotational torque two devices with helical threads in opposed directions may be connected to operate in the same sense.

Description

(54) SOLENOID ELECTROMAGNETIC DEVICE The invention relates to electromagnetic devices containing a pair of magnetizable elements moving relative to each other and winding through which an electric current is passed to induce a magnetic field causing the magnetized elements to move each other. A solenoid-type solenoid device is known, containing a magnetic system consisting of two core elements and a core, and a winding Til. However, this device does not allow to increase the response speed. The aim of the invention is to increase the response speed of the operation. To achieve this goal, one of the elements of the magnetic system is made with cavities located one behind the other, and the other element of the magnetic systems is provided with a number of protrusions that enter the corresponding cavities and have a width and height that is smaller than the cavities, at least in some of the cavities windings connected between the battle so that any of the two depressions with the windings having the same direction are separated by a depression in which there is either no winding, either in the winding located in this depression e. Noah s direction. In addition, in the indicated device, one of the elements of the magnetic system can be made cylindrical, the other - annular, and protrusions and imxi can be formed in this way (screw cutting on the corresponding surfaces of the indicated elements of the mag | N1P system. In the specified device screw cutter can be made with two sets or number of sets, a multiple of two Besides, the windings can be made from one piece of wire. The electromagnetic device can be made so that the winding of one of the cavities can be wound on the direction to one end of the magnet element of the system, and return to the other end of the adjacent cavity of this element of the magnetic system. The element of the magnetic system, which has a hollow, can be made with an opening and a winding passes through it. The proposed device can be so that several windings can be placed in each cavity.In addition, a solenoid type electromata device can be arranged so that the element with protrusions surrounds the element with cavities, the devices are provided with additional an annular magnetic system made with depressions and surrounding the main element of the magnetic system, having protrusions, while the main element of the magnetic system mentioned above has additional protrusions arranged so that the depressions of the secondary element correspond to the additional projections of the main element of the magnetic system A winding is placed in each of the valleys of the additional ring element. In this case, the electromagnetic device can be designed so that the bevels of the projections and depressions of the main and additional elements of the magnetic system can be directed at an angle to each other. The invention is illustrated in the drawings, where: in FIG. I - electromagnetic device of the solenoid type, side view, sectional, on flash 2 - enlarged section of a part of the device according to FIG. 1, FIG. 3 8 - various options are made of the solenoid type electromagnetic device. The proposed device comprises a core 1 having a protrusion with a thread 2 at one of its ends, with which it is connected to the supporting element 3. An element 4 having a hole through which a threaded protrusion with a radial hole passes through the core and the supporting element. Ring core 5 is placed around core 1, and element 4 is designed to limit the axial displacement of the core and the core of each other. At the other end of the cardiac core there is a sleeve 6, which centers the core and the measles relative to each other. The core 1 and the measles 5 are filled. “This magnetized material, Cavity 7 is made in the core 1, into which the protrusions 8 are made, made on the bark 5. The projections and buckles are made using a two-thread screw cut, but generally the number of entries can be any . In the case of a two-way threading, the core has depressions 7 and 9, and on the crust protrusions 8 and 1O are made, which enter the depressions 7 and 9. In FIG. Figures 1 and 2 show examples of screw surfaces that have the same profiles, but the profiles may be different. In the cavities 7 and 9 windings 11 and 12 are placed, in this case executed in the form of one coil. The windings are made from one piece of wire that is wound from one end (preferably threaded) of the core through a helical line through a transverse hole 13 made at the other end of the core and back through the helix to the threaded end of the core. The protrusions 8 and 1O have radially arranged lateral faces 14, which when not in use (without current in the windings) are located at some distance parallel to the lateral facets 15 of the depressions 7 and 9. Other faces 16 of the projections 8 and 10 are inclined, and other faces 17 of the depressions 7 and 9 are made inclined. The axial distance between the faces 16 and 17 is much larger than the axial distance between the faces 14 and 15. The device works as follows. When current is applied to windings 11 and 12, a magnetic flux is induced around them, which passes through core 1, through two gaps, defined by the distance between two pairs of faces 14 and 15 and across the core. 5. At the same time, the core and the core begin to move relative to each other. so as to reduce the distance between faces 14 and 15, due to the different direction of the current in windings 11 and 12, the magnetic flux around these windings is directed towards each other. .o in any gap the direction of the magnetic flux created by the two windings is the same. The path for the scatter flow between the faces 16 17 is created sufficiently large due to the corresponding configuration and thread pitch.

FIG. 3 shows a winding comprising two turns that can be connected in parallel or in series. In this case, the surfaces of the valleys and grooves have a different profile.

FIG. 4 shows measles, which is considerably thinner, FIG. 1-3. Performing the core thin reduces the inertia of the device. In the device, the measles is made of a material with a large electrical resistance and low magnetic permeability, for example, pure iron obtained by sintering.

Fig. 5 shows an embodiment of the device where the depressions have minimum dimensions and the gaps between the faces of the depressions and protrusions are minimal.

FIG. 6 shows an embodiment of the device where the winding has four turns.

FIG. 7 in each trough there are two different windings CK 11 and 12. At the same time, at the beginning, the current is supplied to the winding 11, which induces a stream causing partial saturation of the core and core. Then serves the current in the winding 12.

FIG. 8 shows another embodiment of the device.

there is an additional annular element of the magnetic system 18, made with depressions, and the protrusions of the core are arranged in the depressions of the core 1 and the element 18

It should be noted that in all variants, with multiple-cutting, with an even number of approaches, the cutting of two cavities with windings are divided by a hollow without winding if the current in the windings has the same direction. If the current in the windings is in the opposite direction, then the windings can be laid in all cavities.

In addition, it should be noted that the described embodiments of the solenoid type electromagnetic device are related to unilateral devices, i.e. core and measles move only in one direction. Two-way action can only be when using two similar. devices installed towards each other.

In all the described embodiments of the solenoid-type electromagnetic device, the protrusions and valleys are located along a screw line. At the same time, along with the axial force impinging on the displacement of the core and the core relative to each other, a turning force also arises. The magnitude of this force will depend on the elevation angle of the helix, and the elements of the magnetic system must be set in such a way as to prevent torsion. The pivot force can be compensated for by using another device having a substantially opposite helix angle, with the axial forces arising in these devices being added.

Claims (9)

1. Electromagnetic device of the solenoid type, containing a magnetic system consisting of two elements - a core and a core, and a winding, characterized in that, in order to increase speed, one of the elements of the magnetic system is made with dimples arranged one behind the other, and the other element The magnetic system is provided with a series of protrusions that enter the corresponding cavities and have a width and height smaller than the valleys, at least in some cavities there are windings interconnected so that any of the two cavities with tangling having the same direction are separated by a valley, in which a coil is absent, or in the winding located in this cavity, the current has the opposite direction. 2. The device according to claim 1, that is, with one of the elements of the magnetic system made cylindrical, the other; oh - ring, and depressions and the protrusions are formed by screw-cutting on the respective surfaces of the indicated elements of the magnetic system. 3. The device according to claim 2, that is, that the screw thread is made with two passes or the number of visits is a multiple of two. 4. The device according to Claim 3, that is, so that the windings are made of one piece of wire. 5. The device according to claim 3, differs from the fact that the winding in one of the valleys is wound toward one end of the element of the magnetic system, and returns to the other end along the adjacent hollow of this element of the magnetic system. 6. The device according to p. 3, I distinguish that the element of the magnetic system, which has cavities, is made with a hole and a winding passes through it 7. The device pop, 4, I distinguish u. This is due to the fact that several turns of refraction are relocated in each cavity. 8. The POP.2 device, characterized in that the main elements of the magnetic system are installed so that the element with protrusions surrounds the element with hollows, the device is equipped with an additional element of the magnetic system that is filled with hollows and surrounding the main element of the magnetic system, having a protrusion, and the main element of the magnet system is provided with additional protrusions arranged so that the depressions of the additional ring element correspond to the additional protrusions of the main element of the magnetic system, In this case, a winding is placed in each of the valleys of the additional annular element. 9. The device pop is distinguished by the fact that the bevels of the projections and depressions of the main and additional elements of the magnetic system are angled to each other. Sources of information taken into account during the examination 1. A. V. Gordan and A. A, G. Slivinsk. Electromagnets of direct current. State Energy Publishing House, I960, p. 314-315.