SU15784A1 - Mobile device for the production of finished product from electric furnaces - Google Patents

Description

The invention relates to exhaust devices for electric furnaces, for example, carbide furnaces, using an auxiliary electrode arranged so that it can move in front of the furnaces, and current is brought to it by means of a cable connected to a fixed distribution bus. With known devices of this kind, the cable had to be connected with forceps in front of each individual furnace each time, as was necessary for a service or another furnace. Although such devices are better than those often used in which the cable drags freely on the ground, however, they are inconvenient to handle, lead to severe cable wear and can also lead to accidents with workers connecting the current.

According to the invention, these disadvantages are supposed to be eliminated by connecting the cable to the busbar by means of a current collector, which is pressed against this bus by a spring device. In this case, the pressing pressure can be adjusted by means of a screw spindle device, which at the same time can also be used to disconnect the current collector from the tire if necessary.

In FIG. 1 is a side elevational view; FIG. 2 - detail of the section.

The device consists of an electrode 2 (Fig. 1) moving in front of the furnaces 1. With the help of a screw spindle device 3, the electrode can move in the vertical direction on the frame 4. The latter moves with the help of rollers 5 along the rail 6, which is perpendicular to the furnaces, the rail 6 can move parallel to the furnace line, being fixed on the suspension frame 30, which can be rolled with the help of rollers 1 along rails 9 attached to the ceiling 8 of the room occupied by the furnaces. On the beams 10 supporting the rails 9, reinforced with the help of insulators 11 current-carrying bus 12 (Fig. 1 and 2), running parallel to the line

consisting of two iron beams 13 (Fig. 2), to which the contact bus 12 is attached with screws 14. The current collector working together with the bus 12 consists of a cap 15 that can be moved relative to the cylinder 17 serving as a spring receptacle 16. The spring tends to push the cap 15 upwards and press it against the contact bar; lugs 18 and 19 prevent the spring from compressing beyond a certain limit. The cylinder 17 is connected via an insulating gasket 20 to a rod 21, moving 3 a bearing 22 attached to a suspension frame 30, wherein the rod 21 may have a longitudinal movement, but cannot rotate. At the lower end of the rod 21, there is a spindle 23 provided with a screw thread, which is included in the bush 24 with a wrench. The bush is housed in a bearing 25 attached to the suspension frame 30 and can be repositioned using a bevel gear 26, 27 and a handwheel 28. The contact cap 15 is connected to the electrode 2 by a cable 29.

The current bus can be laid continuously along all the furnaces, or a separate bus can be arranged opposite each furnace, so that the electrode, when moving between furnaces, is left without current and when the current collector is not disconnected. In this case, in order to ensure good running and running down of the bus collector onto the bus, the ends of the current busbars can be bent upwards.

When the product is released from the oven, electrode 2 is delivered on its frame 30 in

the rails 9 to the corresponding furnace, then approaches ne and along the rail 6 and, if necessary, is installed in height. After that, using the handwheel 28, the pin 21 is pressed, and together with it the contact cap 15 is connected to the contact bus 12, and under the influence of the spring 16 an elastic pressing is obtained, as a result of which the current transfer occurs unhindered.

To reuse the device, you can either completely separate the current collector from the busbar (acting with handwheel 28), or you can leave the contact connected by loosening it a little; in the latter case, the contact polishes the current bus all the time.

Subject-patent.

1. A mobile device for discharging the finished product from electric furnaces using an auxiliary electrode to which current is supplied from a separate bus, characterized in that the current collector is arranged re-arranged with respect to the current bus, with what purpose it is placed on an equipped screw thread and controlled by a drive mechanism spindle 23.

2. In the device described in item 1, use of a spring-loaded upper end of the current pickup consisting of a contact cap 15, mounted on a cylinder 17 fixed to the spindle, in which the pressure spring 16 is placed.

3. In the case of the device described in paragraph 1, the use of separate current-carrying tires for each of the serviced furnaces. E Patent of Innocent Fi} of Siemens and Gajsc Joint Stock Company No. 15784

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