FI98808C - Device for feeding down flowing material from a pile - Google Patents

Description

98808

Device for unloading rolling material from a pile

The invention relates to a device for unloading rolling material, such as wood chips, bark, grain, or fine-grained material 5, from a pile.

It is known to use a device equipped with cola chains for unloading piles of rolling material to unload the material on another conveyor. It is also known to use the so-called a rake for collecting rolling material from a pile on the aforementioned conveying chains.

Known devices have a problem with their susceptibility to wear and their expensive and complex structure. Coils and chains wear-15 wear in use, chains are expensive to repair. In addition, it is difficult to make the structure so tight at the draw end of the kolaket conveyor that the material to be transported does not travel elsewhere than the intended destination.

Due to the above-mentioned problems in known devices, the main object of the invention is to provide a device for unloading rolling material, which enables unloading of the material with minimal maintenance costs and raw material losses.

To achieve this object, the device according to the invention is characterized by the features set forth in the characterizing part of claim 1. One advantage of the device according to the invention is that the service interval of the device 30 can be significantly extended.

The operation of the device according to the invention will now be described with reference to the accompanying drawings, in which: Figure 1 shows a top operating environment of the device according to the invention, shown from above. Figure 2 98808 also shows a device that provides a pile of rolling material.

Figure 2 shows a device according to the invention seen from the side 5.

The device according to the invention shown in the drawing comprises an elongate support frame 1, which at one end is pivotally supported on a support 5 and 10 formed by a pivot center at its opposite end on the wheel members 6. The pivoting movement of the frame part is suitably realized by arranging suitable drive members in the wheel members 6. The wheel members can be, for example, rubber wheels, rail wheels or steel wheels against a concrete base.

1 5

A rake 4 is articulated to the body 1, which moves back and forth in a horizontal plane, causing the chest of the stacked material to collapse. In addition, conveyor means 2 are connected to the body part 1 for transferring the material to be discharged to an outlet conveyor 3 below the apparatus, the length of which is freely definable. The conveyor means 2 consist of a multi-part screw conveyor 7a-7e, which in the embodiment shown comprises five conveyor sections arranged in succession in the longitudinal direction of the body part 1 so that the displacement capacity of each section increases from the outer edge section 7a to the pivot center. By means of this arrangement, in addition to the material transferred from the previous conveyor section to the next conveyor section, the material transferred to the conveyor sections by the rake member 4 can be transferred. Each screw preferably has its own drive device 30 but is controlled in groups by adjusting the speed of the screws in step with the required discharge capacity. The material to be unloaded is transferred from the outermost end to the turning center, from where it is further conveyed to the conveyor 3, preferably by gravity alone.

The drawing further shows a device 8 which forms a pile 9 forming a rolling material, which in the embodiment shown is annular. The size of the pile is suitably of radius approx. 40 - 80 m.

The unloading device according to the invention is moved against the pile of rolling material so that the rake 4 of the device always touches the pile with a constant force, which is obtained by using, for example, a constant torque motor in the transmission. When the rake 4 touches the pile, and the rake is moved back and forth in the lateral direction, the rolling material is caused to roll into the pile discharge screws 7a-7e at the bottom of the rake. In the area of the turning center, the material enters the lower conveyor belt 3, from where the material is further conveyed to the desired location.

With the device according to the invention, it is possible to control the unloading capacity by means of screws provided with an adjustable speed better than with an adjustable chain-driven cola conveyor.

The device according to the present invention is excellently suitable, for example, for unloading material from round piles.

Claims (3)

4 98808 A device for unloading rolling material, such as wood chips, bark and grain, from a pile on a conveyor (3) below the storage location, the device comprising a body part (1) connected to conveyor means (2) for transferring the material to be unloaded to the conveyor (3) and rake members (4) to facilitate the delivery of the material to be unloaded to the conveyor means (2), the elongate body part (1) being pivotally supported at one end on a pivot-supporting support (5) and at its opposite end on wheel members (6), known in that the conveyor means (2) is a multi-part screw conveyor (7a-7e) which conveys the material to be unloaded from the outermost end towards the pivot center 15, from where the material to be unloaded is further conveyed to the conveyor (3). Device according to Claim 1, characterized in that the multi-part screw conveyor consists of successive conveyor sections (7a to 7e) in the longitudinal direction of the body part 20 (3), the displacement capacity of which increases from the outermost end towards the pivot center. Device according to Claim 1 or 2, characterized in that the conveyor (3) is a conveyor belt arranged below the unloading device, on which the material to be unloaded is arranged to fall in the region of the turning center. Il 5 98808