CS200798B1 - Reversible end of the belt conveyor with the facility for stretching the conveyor - Google Patents

Description

(54) Return end of conveyor belt with conveyor belt tensioning device

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a belt conveyor return end arrangement with a conveyor belt tensioning device which is particularly suitable for use in underground mines for conveyance in corridors.

In known belt conveyors, the conveyor belt tensioning device is generally located on or in front of the drive station. Tensioning of the belt is achieved by displacing the tensioning drum, most often by hydraulic cylinders or possibly by other mechanisms, often also automatically, depending on the amount of tension in the conveyor belt, e.g. No. 126277. This arrangement of the tensioning device has proven to be particularly useful in belt conveyors for large quantities of material to be conveyed, for example in the conveyance of coal on open-cast coal mines. In the case of belt conveyors used in underground mines, these tensioning devices are generally not applicable for their considerable dimensions or for increasing the dimensions of the driving station provided with such a device. In these conditions, therefore, the most frequently used permanent belt tensioning is by simple mechanisms, for example tensioning screws in the chains, by which the conveyor return station is attached to the anchor. Their disadvantage is, on the one hand, the need for anchoring space and the tensioning device between the conveyor return station and the previous conveyor drive station, and on the other hand, when moving the return station, it is necessary to laboriously dismantle and re-establish its anchoring. If necessary, especially in case of higher height of the transfer point, the transfer point is inserted into the conveyor line in front of the return station.

200 798

200 700 stool with conveyor belt support rollers. placed at a smaller distance than in the track, possibly equipped with sprung damping plates, for example according to the author's certificate no. 176651. The stool is separated from the return station and must be anchored and moved separately.

The disadvantages of the known arrangements of the return end of a belt conveyor with a tensioning device are largely eliminated by its arrangement according to the invention, which is based on the fact that the return end is formed from a transfer table and a return station between which a tensioning device is inserted.

The inventive conveyor belt end configuration has a number of advantages. The return station does not need to be anchored separately, thus saving time and reducing operator physical effort. The belt tensioning is solved in a simple and operationally convenient manner, saving the conveyor belt while maintaining the correct position of the return drum axis to the longitudinal axis of the conveyor. It is not necessary to center the belt after tensioning. The entire return end arrangement is compact, small in size, and does not require anchoring space between the return station and the drive station of the previous conveyor.

In the accompanying drawing, in a view perpendicular to the longitudinal axis of the belt conveyor, an exemplary embodiment of the return end of the belt conveyor with the conveyor belt tensioning device according to the invention is shown in simplified form.

The return end of the belt conveyor consists of a transfer stand 2 and a return station 2 between which a tensioning device 3 is inserted.

Transfer set 1 consists of a frame 10 on which Jaouich rotatably mounted support rollers II for the conveyor belt 4 and the damping plate spring 12. In order to invert 2 J ^e anchored anchors 13th

The return station 2 is formed from a pair of sidewalls 20 connected by beams 21, and there is rotatably mounted a return drum 22 and a guide roller 23.

The tensioning device 3 comprises a guide 30 which is connected to the frame 10 of the transfer stand 2, a withdrawable part 31. whose inner end 32 is slidably mounted in the guide 30 and whose outer end 33 is connected to the return station 2 and at least one force element 34 with a variable length, for example a hydraulic cylinder, which is inserted between the guide 30 and the withdrawable part 31. For supplying the power elements 34 with a pressurized liquid, a source 35 is used. 3 is further provided with a detent 38 between the guide 30 and the withdrawable portion 31i.

If necessary, tensioning of the conveyor belt 4 will release the 3¾ lock. the actuator 37 is set to the appropriate position, thereby supplying the pressure fluid from the source 35 to the force elements 34, which are in the process of the invention. ejecting sliding section 32 of line 30 and thus delaying the return station 2 from entrenched transfer set 2 · ^When the desired tension or position, the detent 38 ensures again withdrawable part towards the management 3Ί 30th

Claims (2)

SUBJECT OF THE INVENTION A return end of a conveyor belt with a conveyor belt tensioning device, characterized in that it is formed from a transfer stand (1) and a return station (2), between which a tensioning device (3) is inserted, 2. The return end of a conveyor belt with a conveyor belt tensioning device according to claim 1, characterized in that its tensioning device (3) is formed from a transfer stand (30) and a withdrawable part (31), the inner end of which (3). 32) is slidably mounted in the guide (30) and whose outer end (33) is connected to the return station (2), at least one force is inserted between the guide (30) and the withdrawable part (31) or the return station (2) a variable length member (34).