SU1427512A1 - Linear electric motor - Google Patents

Abstract

The invention relates to electrical engineering, electrical engineering, the purpose of which is to increase the pulling force. The linear electric motor contains a ferromagnetic body 1, made with an annular gap, on the inner surface of which ring electromagnets 2 and 3 are located, in the gap - a movable nonmagnetic sleeve 4, located coaxially with the elements of the magnetic system, in 1 toro on the ferromagnetic inserts 5 there are coils 6, and in the housing there are non-magnetic inserts 7. When a flux is generated, the sleeve 4 moves axially in one or the other direction. The positive effect is achieved due to the amplification of m agnitnogo flow from ring electromagnets and its orientation. 3 il. ,

Description

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The invention relates to electrical engineering, electrical engineering and can be applied in the drive of a special machine for obtaining NSh1 surfaces of a complex profile, and also in drive feeds and precise movements of other machines.

The aim of the invention is to increase the pulling force.

FIG. 1 shows an offer vibrator, a general VIEW} in FIG. 2 - a section A-A in FIG. one; Fig 3 is a diagram of the magnetic flux from the ring magnets about

Inside the housing 1 of a linear electric motor there is a magnetic system consisting of an even number of ring magnets 2 and 3 magnetized in the axial direction of the shaft, which are made in the form of electromagnets or permanent magnets, and the adjacent masts are magnetized in In the opposite directions, the movable sleeve 4, located coaxially with the elements of the magnetic system, moves in the icopnyca annular plane in the axial direction of the plane.

In the sleeve 4, manufactured from non-magnetic material, is made.

An insert 5, in the recesses of which there are coils 6. Case 1 is made of ferromagnetic material, and insert 7, located in the inner part of Ko inyca, opposite ring magnets .., is made of non-magnetic material.

The inner and outer parts of the housing 1 are interconnected with krshgkamib made of ferromagnetic material,

In order to ensure self-centering of the core 4, the constancy of the gap between the core and the inside of the housing 1e, pockets 9 and 10 are arranged circumferentially in four perpendicular directions in order to prevent contact between them. Pockets left in one direction are connected by pipe 11 with a separate pump S1I with a channel of a multithreaded pump, with chokes 12 installed in front of pockets 10, for example, screw, q KQNmeHcanjiH distortions of the liner relative to the housing.

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oil or other process fluids.

The motor works as follows.

Since the magnets 2 and 3 are mounted opposite each other by the same magnetic poles, in the space where the coils 6 are located, a quasi-uniform magnetic field is formed. The induction lines 13 of this field pass successively through the inner part of the housing 1, the ferromagnetic insert 5, the outer part of the housing 1, the bolt 8. Thus, the magnetic flux is passed through the ferromagnetic insert 5, in which the coils 6 are located, around the non-magnetic insert 7. This distribution of magnetic flux is the most rational.

The direction of the magnetic induction perpendicular to the axis of the coils 6 connected to a constant source

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these coils, the sleeve 4 moves axially in one direction or the other. By changing the magnitude and direction of the current, you can set any law of motion of the sleeve. The working fluid from the pump through the pressure through the pipe 11 enters the pockets 9, and through the throttles 12 - in the pockets 10.

When radial displacement or skew of the sleeve 4 relative to the housing 1 in the pockets 9 and -10, which are located in opposite directions, the pressure of the working fluid changes, since the radial clearance from those opposite to the armans will have different values. Due to the different magnitudes of these pressures, a force appears that sets the sleeve 4 to a position coaxial with the housing 1. As a result of the circulation of the liquid, the cooling of the device is also achieved.

Thus, due to the increase in the magnetic flux from the ring magnets and its rational directivity in the electric motor, an increase in tractive effort is achieved, which expands its field of application and makes it possible to use it, for example, in a dp machine polishing surfaces of a complex profile, the creation of which is impossible without a given devices.

Claims (1)

Invention Formula The linear electric motor contains annular external and internal magnetic cores, and the internal motor is complete with an even number of excitation elements, between which measles with a winding are placed, in order to increase COi / e.J In this case, the electric motor is provided with ferromagnetic and non-magnetic inserts, the ferromagnetic insert is placed on the core and the winding is located on it, the non-magnetic inserts are placed on the internal magnetic conductor opposite the excitation elements. Phi2.2