DD287360B5 - Cable routing between a fixed substructure and a rotatable superstructure, especially in open pit mining equipment - Google Patents

Description

Cable management twisted a fixed substructure and a rotatable superstructure, especially in opencast mining equipment.

The invention relates to the nature of the installation of the energy supply cable and is preferably used in bucket wheel excavators. These extraction devices are z. B. used in mining for removing overburden or mining a coal seam or other minerals.

According to SU-EB 1023489A, H02 G11 / GO, a solution is known in which the power supply cables between the lower non-moving part and the upper rotatable part are additionally suspended on a rotatable ring, forming two loops which are inside the lower one hang down immovable part. The rotatable ring is kinematically connected to the rotatable member such that the rotatable ring, with the strands of cable loops attached thereto, moves about a pivot angle which is two times less than the angle about which the rotatable member is attached to it Strands of cable loops swings. The same effect is achieved when the ring is replaced by a rotating cable saddle.

The power supply cable is inserted into the substructure at the upper part of the fixed substructure via a fixed cable saddle and guided and fastened by means of a freely suspended cable loop with the largest possible radius on the cable saddle which is rotatably displaced in the middle superstructure. Another free hanging cable loop, which, in order to get the greatest possible twist length, dives far into the substructure, is then on the upper part of the rotatable superstructure

in turn fastened permanently fixed cable saddle. .

With the execution as a rotatable ring or cable saddle, the f.nergiezuführungskabel is exposed during the pivoting of the superstructure tensile loads, which leads to early wear.

The indicated in claim invention addresses the problem of reducing this wear of the power supply cable by reducing the tensile loads and thus to achieve a higher availability of the entire device.

So that the power supply cable is not subjected to any tensile load during pivoting of the superstructure, a traction cable, which is shorter in its length, is arranged almost parallel to the energy supply cable according to the invention.

When swiveling the superstructure of the rotatable cable saddle is swung together due to the building cable to a swivel angle, so that the twisting distributed to both cable loops and minimized compared to a centrally located in middle superstructure cable saddle substantially.

In the drawing, as an embodiment of the invention, the arrangement of the power supply cable in conjunction with

Cable saddles shown and described. It show ^J

Fig. 1: a section through the fixed base and the rotatable superstructure with the arrangement of the cable saddle and the

Power supply cable ·

Fig. 2: Top view of Figure 1 Fig. 3: Top view of Figure 1, the superstructure pivoted at an angle α.

In the upper region of the fixed substructure 1, the fixed-displacement cable saddle 2 is arranged, via which the energy supply cable 3 is guided into the substructure 1. By means of a cable loop the power supply cable 3 reaches the rotatable cable saddle 4 in the rotatable superstructure 5 and is expediently fastened here.

By means of a further cable loop which, in order to obtain the greatest possible twist length of the energy supply cable 3, dips into the free space of the substructure 1, the energy supply cable 3 arrives at the cable saddle 2 fixed in the upper region of the rotatable superstructure 5.

For this known embodiment wild according to the invention a traction cable 6 is arranged, so that the pivoting of the rotatably mounted superstructure 5 to the pivot angle α builds a cable, which is added by the additionally arranged traction cable 6, which is shorter than the Energiozuführungskabel 3 and almost parallel thereto added is and causes the rotatable cable saddle 4 in the middle superstructure 5 is pivoted about the pivot angle β, so that the twisting of the power supply cable 3 distributed approximately proportionally to both cable loops.

Claims (1)

Cable management between a fixed substructure and a rotatable superstructure, especially in opencast mining equipment, the energy supply cable suspended in each case a permanently shifted cable saddle of the substructure and the rotatable superstructure in addition in the middle of the rotatable superstructure on a likewise rotatably mounted cable saddle Ut and freely suspended in the substructure protruding loops forms, characterized in that the power supply cable (3) is suspended on a about parallel freely suspended and slightly shorter pull cable (6). For this 1 page drawings