DE8623998U1 - Stockpile clearing device - Google Patents

Description

Klöckner-Humtoldt-Deutz AG

5000 Cologne 80 Description Stockpile clearing device

Hit scissor joints attached to the portal

The innovation is directed at a stockpile clearing device in which the bulk material can be discharged sideways by means of a scraper hanging on a portal, whereby the scraper can be lowered to the stockpile floor and essentially raised and lowered in parallel by means of a cable pull.

From a certain stockpile size with a correspondingly large scraper length (in the order of 30 m or more), the lateral stability ^of the scraper boom is no longer sufficient for known stockpile clearing machines. The cutting forces during processing push the scraper boom out of its vertical plane.

The aim of the innovation is to provide a device with which the \ remaining of the scraper boom, especially when • clearing wide piles, can be easily controlled in its

vertical movement plane is ensured. The task is solved in accordance with the innovation by

Scraper is guided by one or more scissor joints from the portal M ·■** in a vertical plane.

Particularly preferred is a pile clearing device with a two-part scraper, in which the larger part of the

. scraper parallel to the horizontal stockpile floor and the hinged part of the scraper carries the bulk material over

: promotes a table edge.

' The new measure increases the rigidity of the scraper boom in a simple and relatively inexpensive way. The measure is considerably cheaper than the otherwise necessary reinforcement of the

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Portal or a telescopic guide for the scraper boom or an additional guide for the scraper boom tip on the portal on the side opposite the discharge.

The innovation can be used for longitudinal and circular piles. A longitudinal pile clearer can be moved on rails laid along the pile and carries the material to the long side of the pile. A circular pile clearer can be rotated around the central axis of a pile with a circular base and carries it to the middle of the pile. A scraper as a discharge conveyor hangs from a portal spanning the pile.

The term "stockpile" is to be understood in a broad sense, not just as a pile of rubble with a triangular or trapezoidal cross-section on a horizontal stockpile floor. The innovative device can also be used on inclined and bent stockpile floors; to increase the storage volume for a given floor area, the stockpile can also be limited by retaining walls. The transition to the bunker is fluid. It is well known that the scraper boom must therefore be divided and that the bulk material may have to be conveyed over the edge of a table, and that there may be areas where the scraper does not necessarily have to be raised and lowered parallel to the stockpile floor everywhere. For complete clearing, it is only necessary that the scraper can be lowered sufficiently far to the stockpile floor everywhere.

The new device is shown in the drawing and further described by way of example. Shown are:

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Fig. 2

a heap clearing frame in connection with a

Longitudinal haLde

(Section B-B of FIG= 2),

Section through a scissor joint (section A-A of Fig i).

In this example, the stockpile (1) has a trapezoidal cross-section/ a maximum width of 45 m and a maximum height of 20 m. A scraper (3) is suspended by ropes from a portal (2) that is approximately 50 m wide. Here, this scraper consists of a substantially horizontally conveying part (4) and a part (5) that is hinged to it. The horizontally conveying scraper (4) can be raised parallel to the stockpile floor (7) by means of a rope pull (6). The part (5) of the scraper (3) that is hinged to the portal (2) conveys the bulk material over the table edge (S) onto a belt (9).

It can be seen that on the slope of the heap opposite the discharge side there could also be a retaining wall, which would allow the storage volume of the heap to be increased even further.

With such a long scraper length, the cutting forces when working the pile cause a shift of the boom from its initially vertical plane determined by the scrapers and ropes, which would require a considerable reinforcement of the bridge for static reasons. According to the innovation, sufficient lateral stability is achieved by two scissor joints (10). The scissor joints (10) must have a rigidity with respect to the vertical plane (in the direction of travel of the portal). However, yielding is required in the scraper direction/ this can be achieved in the example by shifting the scissor joint on the

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Portal in the conveying direction of the scraper; in special designs it can also be achieved by a pendulum suspension*

In Fig. 1, the scraper is shown in the other extreme position, i.e. when the stockpile is filled to the maximum.

The laterally projecting rungs (12) of the scissor joint do not cause any interference in this position.

Fig. 2 shows a section through a scissor joint looking towards the conveyor side. The axes (11) of the scissor joint (10) are preferably made of static 6 rounds perpendicular to the direction of clearing (and of course horizontal). The "rungs" (12) of a scissor are approx. 5 m long.

It goes without saying that this simple, effective lateral reinforcement of the scraper boom can be adapted very flexibly to different stockpiles and bunkers and becomes all the more important the longer and more multi-part the scraper boom has to be.

Claims (2)

Protection claims 1. Stockpile clearing device in which the bulk material can be discharged sideways by means of a scraper suspended from a portal, the scraper being able to be lowered to the stockpile floor and being able to be raised and lowered essentially parallel thereto by means of a cable pull, characterized in that the scraper (3) is guided in a vertical plane from the portal (2) by one or more scissor joints (10). . 2. Stockpile clearing device according to claim 1, modified in that the end of the scraper (3) facing the discharge side is hinged to a second scraper (5) and the other end of this second scraper (5) is rotatably mounted perpendicular to the conveying direction of the scrapers (4, 5) by means of an axis fastened to the portal (2).