RU2515276C2 - Motor and tractor non-contact electric generator - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: invention is referred to electric machines and namely to non-contact synchronous generators of inductor type operating mainly with rectified load used in generator units of motor and tractor equipment. Technical result lying in minimum intervention into brake assembly is ensured due to the motor and tractor non-contact electric generator containing a rotor and a stator with an excitation system and operating winding which forms a part of the braking assembly according to the invention. The rotor of the non-contact electric generator is made as a perforated brake disc; sections of the brake disc can come into magnet contact through the air gap with the stator magnet cores of the non-contact electric generator where working and excitation coils are mounted.

EFFECT: usage of this generator allows application of so called generator braking when energy of the vehicle braking is converted into voltage of the operating coil, at that energy can be accumulated at additional capacitor and can be used for different purposes, for example, for the motor start-up.

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Description

The invention relates to electric machines, namely to non-contact synchronous generators of inductor type, working mainly on the rectifying load, used in generator sets of automotive vehicles.

Known autotractor non-contact synchronous generator (RF patent No. 2231119 / Litvinenko A.M. - publ. 06/20/2004, bull. No. 17). It contains a rotor, a stator with an excitation system in the form of a package with a working winding, the excitation winding of the rotor, while the shaft is made hollow with radial holes.

Its disadvantage is the presence of brush contact, in particular, rings mounted on the shaft, which leads to an increase in its axial length.

The closest to the claimed technical essence and the achieved results is a synchronous inductor generator (RF patent No. 2400908 / Litvinenko AM, Mozgovoy IN - publ. 09/27/2010, bull. No. 27), containing two stators with an excitation system and working windings . The rotor is made with a hollow shaft and claw-shaped tips, and the excitation source is made in the form of conical coils mounted on the covers.

Its disadvantage is the inability to use as a brake generator set, located directly in the area of the wheels of the vehicle, next to the brake mechanism.

The technical result, which consists in minimal interference with the brake mechanism, is ensured due to the fact that the autotractor contactless electric generator containing the rotor, as well as the stator with the excitation system and the working winding, according to the invention is part of the brake mechanism, while the contactless generator is located on the basis of the axle of the chassis systems, the rotor of the contactless electric generator is made in the form of a perforated brake disc, while the non-perforated sections of the brake disc have zmozhnost entering into contact through the magnetic air gap from the stator magnetic circuits, on which are arranged working coil and excitation coil.

In the drawings, the claimed device is shown, in which Fig. 1 schematically shows the design of the generator, a section in the axial plane, Fig. 2 shows the generator, a side view of the brake disc, Fig. 3 shows the position of the brake disc, characterizing the open state of the magnetic circuit, in Fig. .4 shows the position of the brake disc characterizing the closed state of the magnetic circuit.

The generator is part of the brake mechanism, which includes brake disc 1. At the same time, there is also a standard brake system, and perforated, i.e. equipped with holes, the brake disk performs the functions of a rotor, while the sections of the brake disk are able to enter into magnetic contact through the air gaps 2 with the stator magnetic circuits, namely with the magnetic circuits 3, T shaped, on which the working coil 4 is mounted. The base of the magnetic circuit 3 with a bolt 5 is attached to the rack of the L-shaped magnetic circuit 6, the shelf of which is attached with bolts 7 to the unsprung part 8, connected, for example, with the front wheel fist or the rear wheel beam. And in the general case with the base of the axle of the running system. A small L-shaped tip 10 is attached to the same element using bolts 9, to which a T-shaped magnetic circuit 12 of the excitation coil 13 is attached using bolts 11.

Thus, the disk has a hole concentrically with which during rotation the tips of the magnetic cores 3 are located, for example, the left tip in figure 3, and the right is in the area of partial overlap. Non-perforated sections of the brake disc - 14 in figure 3 and 15 in figure 4 are able to enter into magnetic contact, reducing the magnetic resistance between the left 3 and right 12 magnetic circuits.

Device operation

During normal operation of the undercarriage, the excitation coil is disconnected; there is no magnetic flux in the generator’s magnetic circuit. If necessary, the braking signal of the limit switch associated with the brake pedal, the excitation coil 13 is connected to a power source. In the magnetic circuit, magnetic flux is excited along the chain: magnetic circuit 12 right (Fig. 1) - air gap 2 - disk 1 - air gap 2 left (figure 1) - magnetic circuit 3 - magnetic circuit 6 - magnetic circuit 10 - magnetic circuit 2. Since the brake disk made perforated, i.e. with holes, the magnetic flux is continuously modulated by holes (analogs of the grooves) on the one hand and the gaps between the holes (analogs of the teeth) on the other hand. For example, figure 1 shows that the left tip is located exactly in the middle of the hole of the disk, therefore, the magnetic resistance is maximum, and figure 4 shows that the same left tip is in the area between the holes, i.e. the magnetic resistance is minimal and is caused only by the presence of gaps 2. These generators can be installed several, for example, figure 2 shows 2 of these generators.

The use of this generator allows the use of so-called generator braking when the braking energy of the vehicle is converted to the voltage of the working coil, while the energy can be stored, for example, in an additional capacitor, and can also be realized for various purposes, for example, to ensure engine starting.

Claims (1)

An autotractor non-contact electric generator containing a rotor, as well as a stator with an excitation system and a working winding, characterized in that it is part of the brake mechanism, while the non-contact electric generator is placed on the basis of the axis of the running system, the rotor of the non-contact electric generator is made in the form of a perforated brake disk, while non-perforated sections of the brake disc have the ability to enter into magnetic contact through the air gap with the stator magnetic circuits, on which the working coils and field coils.

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