DE428631C - Hydraulic adjustment device for the electrodes of electric ovens - Google Patents

Description

GERMAN EMPIRE

ISSUED MAY 10, 1926

REICH PATENT OFFICE

PATENT LETTERING

CLASS 2t h GROUP 24

(A 41119 VIIIj ₂ Ih ¹ )

Public company Brown, Boveri & Cie. in Baden, Switzerland.

Hydraulic adjustment device for the electrodes in electric ovens.

Patented in the German Empire on December 4 , 1923.

With hydraulic adjustment devices

for the electrodes, electric ovens, the electrode carriers are maintained by means of rollers or to run similar devices along guide rails, for example in the manner of

shown in Fig. ι. Here A means a hydraulic pressure cylinder, B the piston, C the piston rod, D an electrode, E the carrier of the electrode, which is arranged eccentrically to the pressure cylinder and on which the

Piston rod C engages, F the guide rails, Q the rollers attached to the electrode carrier E , which run along the guide rails F. If S _{1 is} the height of lift of the electrodes, S _{2 is} the distance between the rollers in the vertical direction necessary to absorb the tilting moment, then the total height of the printing cylinder with the guide rails is at least equal to 2S ₁ -JS ₂ .

The invention now relates to a simpler type of hydraulic adjustment device in which the hydraulic pressure cylinder that is already present simultaneously serves as a guide for the carrier of the electrodes arranged eccentrically to the pressure cylinder. With the mostly heavy weight of the electrodes and the resulting strong construction of the electrode carrier and the guide, the elimination of the special guide rails means that the device is considerably cheaper. The overall length of the printing cylinder together with the cast-on guide strips is thereby reduced _{by the amount S 1.}

Fig. 2 shows such a device. The letters have the same meaning as in Fig. 1. The minimum height of the printing cylinder including the guide _{strips here is S 1} -J- S ₂ , while in Fig. 1 it was 2S ₁ -JS ₂ . Fig. 3 is a cross section through the printing cylinder, which shows the guide strips cast onto the printing cylinder. In this example, the piston rod C is connected to the electrode carrier E by pull rods or pull cables H.

An even simpler design, which is particularly suitable for smaller ovens, results if according to the invention the piston of the pressure cylinder is fixed, the pressure cylinder itself against it is movably arranged. The latter can be fixed to the electrode carrier be connected. Fig. 4, in which the letters have the same meaning as in the earlier illustrations, shows such a facility.

Finally, a further shortening of the overall length of the device is possible if, according to the invention, the piston is provided with a guide rod penetrating the pressure cylinder, as shown in FIG. Here is / this guide bar, all other letters have the same meaning as in the previous figures. In this case, the minimum length of the cylinder A _{is shortened to S 1} (the height of lift of the electrodes).

Claims (4)

Patent Claims: 1. Hydraulic adjustment device for the electrodes of electric furnaces, characterized in that the hydraulic Printing cylinder at the same time as a guide for the carrier which is eccentric to the printing cylinder arranged electrodes is used. 2. Device according to claim 1, characterized in that the piston rod is connected to the electrode carrier by pull rods or pull ropes. 3. Device according to claim 1, characterized in that the pressure cylinder is movable and is firmly connected to the electrode carrier. 4. Device according to claim 1, characterized characterized in that the piston has a guide rod penetrating the pressure cylinder wearing. Fig. J. Fig. 2. Fig. 4. Fig. 5.