SU146159A1 - Collector Electromechanical Reverser - Google Patents

Description

The collector reversators used for reversing direct current into alternating polarity are known for feeding electroplating baths. Typically, collector reversators are made in the form of rotating cylinders or discs with contacts and current-removing brushes.

The proposed electromechanical collector collector, equipped with symmetrically located sector contacts, made of dielectric material with a toothed disk, a rotating disk drive and current collecting brushes, differs from those known in that in order to avoid sparking and burning of brushes, the disk is equipped with an auxiliary switching device. The device is installed on the contacting sectors and is made in the form of brass rocker-like plates with silver or Melchior contact wound at the ends.

The proposed reverser has high strength; large electrical and mechanical wear resistance of contacts; short contact response time; small dimensions; ease of manufacture; convenient regulation mode; noiseless operation 1 shows the kinematic scheme of the proposed reverser; in fig. 2 - his electrical circuit.

The electric motor rotates the worm wheel 3 through the worm gearbox 2, and through the gear wheel the 4 textolite wheel 5 (Fig. 1). Copper contacts 6–6 and 7–7 and intermediate (neutral) contacts 8–8 are mounted on the textolite wheel 5 on both sides, on which spark wires 9 are installed. Contacts 5 and 7 and 5 and 7 are connected crosswise with copper jumpers tightly . The wheel rotates between two textolite posts in which

No. 146159-2, current-removing brushes 10-10 and // - 1G and spring tappets for receiving spark leads are mounted. On contacts 7-7, brushes / 7 - // feed a direct current from the generator. Neutral contacts 8–8 are isolated from contacts 6–6 and 7–7, as well as each other, with a slit, which is filled with sealing wax to prevent conductive dust from entering the contacts. Intermediate (neutral) contacts are used to protect the contacts 6--7 and 6-7 with a brush. Their working area is equal to the working area of the current-removing brush.

Spark taps 9 are a brass plate, slightly curved in the middle, at the ends of which are cupronickel or silver plates. The spark wires in the middle are hinged on the contacting sectors, i.e., on each intermediate (neutral) contact with a screw. The rotation of the spark rods on the axis of the contacts-bend. The sparger is set so that one of its ends, when acted upon by the pusher, can close with the end mounted on contact 6-6 and 7-7. When this occurs, the reversal of the bath current. Spark taps are used to draw a spark from the current brush when the circuit is broken under load and to regulate the moment of switching from one pole to another. The proposed reverser works well and stably in the electroplating workshop of the Okhta chemical plant.

Subject invention

A collector electromechanical reverser, equipped with symmetrically interconnected cross-sectional pie contacts made of dielectric material with a toothed disk, a drive rotating a disk, and current-collecting brushes, characterized in that on the contacting sectors and made in the form of brass rocker plates with silver or Melchior contact ami

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