SU395948A1 - CONTACT DEVICE FOR ELECTRICAL MACHINES - Google Patents

Description

one

The invention relates to contact devices and can be used to sell the field of turbo-generators with excitation from rotating straighteners.

Contact devices are known comprising fixed contacts rigidly mounted on the shaft of the electric machine and rotating bridge contacts mounted on the bark of the drive and having the possibility of free movement in the axial direction.

The purpose of the invention is to simplify the design and increase the reliability of the device.

This is achieved by the fact that the bridge contacts are arranged crosswise in the bracket and in the sleep; bzheny along the ends of the stops covered by the OVENE.

FIG. 1 shows a contact device; Hai FIG. 2 is a section along LL in FIG. one.

The iKoHTa-KTHoe device contains a figured bracket 1, in which contact bridges 2 and 5 are installed cross-shaped, spring-loaded at the ends by springs 4. The bridges are equipped with silver dimples 5 in contact with the contact soldering 6 of fixed contacts 7 and S. Solders 5 have a better setting of bridges Dilndric or spherical surface shape. At the ends of the bridges on the wasps x 9

rollers 10 are mounted, which roll along the inner surface of the cylindrical casing 11. The fixed contacts are located inside the shaft 12 in the driver and are isolated from it by insulating spacers 13.

The moving cross-shaped contact bridges 2 and 5 together with the bracket /, the cylindrical yoke //, the springs 4 and the insulating cup 14 are reinforced with a Hai core 15 of the electromagnetic drive.

Normally, the contacts of the rotating contact device are in a closed position under the action of the spring 16.

In the closed position of the contacts, bracket 1 is slightly pushed towards the fixed contacts 7 and S and does not hold contact bridges 2 II 3 & axial direction, therefore under the action of the spring 4 are created in

At the contact points, the necessary contact presses are required.

When disconnected, the measles of the magnetic system moves in the direction of the foot 17, the clip / rests against the bridges and leads them away from the fixed contacts.

The proposed design allows the execution of contact bridges with massive ones, as well as through the use of several bridges to provide the required number

contact points. FIG. 1 and 2 are shown

two bridges, or you can increase their number to three or four.

Using the rollers 10 and the cylindrical holder 11, the bridges 2 VI 3 are centered with respect to the axis of rotation of the shaft 12, while the bridges still have the necessary levels for self-installation: baud.

The axis of the cylindrical holder 11 is aligned with the axis of the shaft / and shaft 12, therefore, the system of moving-contacts is balanced, as (As it is symmetric to the relation of the axis of rotation of the axis K.

In addition, such a system is well balanced.

Subject invention

A contact device for electric machines containing stationary contacts rigidly mounted on the shaft of the electric machine and rotating bridge contacts mounted on the drive bark and having the possibility of free movement in the axial direction, characterized in that, with a simplified design gap and increased reliability of the device, The bridges “new contacts are located crosswise in the bracket and are equipped with stops on the butt end 1M, covered by a clip.

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