DD280090A1 - REPAIR EQUIPMENT ON DIAGRAMS - Google Patents

Abstract

The invention relates to a repair facility on open pit rigs, in particular on bucket wheel excavators, in which movable cranes are mounted on the ballast boom or Verladebruecke. To be able to achieve maximum availability with the repair crane 6, the bucket wheel 2 at the same time forms the support structure for a crane runway, the cranes are pointing to the excavator center, in almost extended position of the crane tracks z. B. connected with hinged crane runway segments 5, which allow the crossing of the repair crane 6 from one to another boom and elastic deformation of the Schaufelradauslegers 2 and Ballastauslegers 1 by their constructive boom training, which occur as a result of load changes on the mining equipment, and after completing the repair work again folded out or can be lifted out. Fig. 1

Description

Explanation of the essence of the invention

It is the task for opencast mines, especially bucket wheel excavators, to provide a solution for the arrangement of a repair crane, which significantly increases its availability and in which the previous necessary for maintenance and repair additional expenses are largely avoided. According to the invention the object is achieved in that in open-pit large equipment, especially in bucket wheel excavators whose cable supports, tower or corresponding portallörmig are formed, the Obergurta from Ballastausloger or from the loading bridge or the like and the Schaufelradausleger or similar by the corresponding inclination of Schsufelradauslegers a common plane form or approach this as far as possible, the Schaufelradausleger is provided in its longitudinal direction with a crane runway and a connection between the Schaufelradausleger and the ballast and constructively designed so that it allows the passage of the repair crane from one boom to the other boom of the bucket wheel excavator and thus its area of use approximately doubled. Before commissioning the bucket wheel excavator or, if necessary, during d '. ·. Repair period or other reasons, this Varbindung by folding or lifting out of the entire crane track to open or dismounted. By known safety locks a driving in the repair crane in the open crane runway area is excluded.

In static as well as geometrical terms, elastic changes in length which occur as a result of the current load changes on the opencast mining machine during the repair period in the plane of the crane runway are permitted by an articulated and displaceable displacement of the crane runway connection and an adverse effect in the overall system of the opencast mining machine is excluded.

embodiment

In the drawing, the invention is shown schematically and described below as an exemplary embodiment. Show it:

Fig. 1: side view of a bucket wheel excavator

Fig. 2: Section A-A of Figure 1 -. Representation of the upper associations of Schaufelrad- and ballast boom with the crane runways

The ballast jib 1 and the bucket wheel jib 2 shown in the plan conversion project the supporting structure for the crane runway on the ballast jib 3 and a crane runway on the bucket wheel jib 4. These crane runways are firmly connected to the respective jibs. Between two crane tracks two carriers are arranged at their ends pointing to the excavator center as foldable crane runway segments 5, which represent a connection between the crane runway on the ballast boom 3 and a crane runway on the bucket wheel boom 4 and allow the crossing of the repair crane 6 from one to the other boom and the must be open when the bucket wheel boom 2 is raised or lowered.

The closing and opening of the folding crane runway segments 5 can be carried out with the repair crane 6 or additional devices.

The wheel-side mast 7 and also the ballast-side mast 8 are to be formed in the lower area as a portal to allow the passage of the repair crane 6.

The pivot mechanism opposite the end of the foldable crane runway segments 5 is displaceable in the Kianbahniängsrichtung in the closed state, since small changes in length may occur due to changes in load changes to the arms in this plane.

In addition, the folding crane runway segments 5 are provided with known safety interlocks 9, which allow the crossing of the repair button 6 from one to the other boom only in the closed state.

Claims (2)

Tieparatureinrichtung on opencast mining equipment, especially on bucket wheel excavators, on the ballast boom or loading a movable crane repair is mounted and the Schaufelradausleger by the corresponding inclination and pivoting allows a nearly stretched Stelung the overbelt of both boom, characterized in that on the Schaufelradausleger (2) or the like in its longitudinal direction, zweckmäßigerweir.e on the upper straps arranged with the on the ballast boom (1) or the loading bridge, the repair crane (6) carrying and in track gauge crane track is fixed, pointing to the excavator center crane rail ends in almost extended position of the crane runways with the arrangement of one or more crane runway segments τ (5) by means of known, releasable, caused by loading on the jibs length and inclination changes receiving elements are connected and the crossing of the repair crane (6) closed at Ener crane runway allow from one to the other boom, with the help of the repair crane (6) or separate devices according to need the connection produced or released again and to prevent the crossing in case of interrupted connection with known safety locks (9) are provided. For this 2 pages drawings Field of application of the invention The invention relates to a device on open-pit mining equipment, in particular on bucket wheel excavators z. B. with rope supports or a tower and on the ballast boom a movable repair crane is arranged. The repair device is expediently applicable to devices that are provided in the crane track longitudinal direction with a raisable and lowerable boom. Characteristic of the known state of the art For repair and maintenance work on opencast mining equipment cranes or other belonging to the bucket wheel excavator hoists are known, which were arranged according to DD-PS 239.819, E02 F9 / 00 stationary in the center of the excavator or au. the ballast boom are movable, as in the DD-PS 29,695 E 02 F 9/18 open beard and serve as ballast at the same time. It is also known to arrange several expansion cranes simultaneously on the ballast box, in the center of rotation, on the fixed cable support and on the band bridge, as described by Durst, Vogt "Schaufelradbagger" p. 289, Trans Tech Publications 1986. This results in the disadvantage that in particular the existing movable repair crane can be used only in a boom area. For repairs in the other Auslegarbereich thus the use of a mobile hoist or other specific complex repair facilities is necessary. The simultaneous arrangement of several expansion cranes increases the mass of the mining equipment and affects the mass-performance ratio unfavorable. The insert? a mobile hoist with the required load capacity often causes problems, since the accessibility to the surface mining equipment in the open cast mine seasonally difficult is ^first On the other hand, this mobile hoist often remains longer on the open pit than the actual use due to the difficulty of transporting it to and from the mine. Specific facilities for repair and maintenance require labor-consuming and material-consuming ancillary equipment and extend the equipment downtime. Object of the invention It is the object of the invention to substantially increase the availability of a moveable crane crane mounted on the Taqebaugroßgerät, without significantly major structural changes and material expenses. In addition, the expenses for the use of mobile hoists odor specific repair facilities should be largely avoided and thereby caused maintenance and repair period significantly shortened and the mining equipment availability can be increased. Due to the minimization of the dismantling cranes to be arranged on the open-pit crane, the aim is to improve the design of the mass-performance ratio.