CS231035B1 - The cutter blade disks of the combine harvester provided with knife holders on the outside - Google Patents

Abstract

The invention relates to two discs in one disconnecting body of a mining combine with simultaneous single-blade and double-blade holders for accommodating cutting knives. The essence of the cutting consists in the fact that the largest circular peripheral area of the inner side of the left disc and the inner side of the right disc are on the outer circular circumference in a sequential arrangement in continuity one after the other without overlapping each other, fastened double-blade holders equipped with two inserted cutting knives at a positive angle in the direction of the rock cut.

Description

The present invention relates to two disks for one disengaging member of an embossing combine and having at the same time a pair of four-knife holders for holding the cutting blades.

Until now, two side-by-side disks mounted on the surface of the peripheral panel have been attached to the opening member of the embossing mine excavator, provided with the one-knife holders in particular so that the cutting blades inserted therein form a continuous cut in the rock. each of these discs.

However, there is a gap between the two discs of the disengagement member, which, when the mine harvester is not in operation in the mine, causes incomplete disintegration of the rock at the location of the gap within the punched open cut in the rock and leaves this part undetached. For possible disruption of this uncoupled rock part, the operator of the punching harvester performs various additional manipulations by moving the arm of the uncoupling member to the left or right, so that even this mechanically uncoupled rock part is disrupted.

This leads to an undesirable impact on the edges of one of the knife holders, causing premature damage. When investigating issued discs from the disconnecting organs of these excavating harvesters, it was found that in the whole * district these discs are under repair with very damaged *! . In addition, these undesirable impacts also cause increased strain on all other parts of the decoupling member, in particular due to the resistance of the rock, which is transmitted in particular to the driving part of the decoupling member, causing unexpected failure of the embossing harvester.

This failure rate reduces the mechanical punching process and can generally affect the planned footage during mine excavation. investigation of the above mentioned technical problem has found that the partially uncoupled part of the rock is caused both by the established gap between the disks and by the fact that they are attached to the inner circumferential surfaces of the left and right disks along the outer circular circumference the single-leg holders so that even half of their number of cutting blades inserted therein are at a positive angle and half at a negative angle in the direction of the rock cut.

In particular, the cutting blades which form a negative angle in the rock cut direction in the one-knife holders do not prevent the edges of the one-knife holders from being trimmed in the rock, and gradually wear and destroy them.

These disadvantages overcome the discs of the punch disconnecting member of the invention, which is based on the fact that on the largest circumferential surface of the inner side of the left disc and on the largest circumferential surface of the inner atrium of the right disc. two-blade holders so that the cutting blades inserted into them are at a positive angle in the direction of the rock cut.

The new * and advanced * effect * when using the disengagement discs of the inventive punching harvester is the increased disengagement efficiency of the disassembly member, as well as the improved mechanical driving of the mine workings. An important advantage is also the achievement of reduced wear of the knife holders, including a reduction in the consumption of the cutter blades, as well as an increase in the service life of the drive member of the disengaging member of the embossing container.

In the drawing, FIG. 1 is a plan view of an opening member of a punching harvester formed of and with two discs, both left and right, and their driving part, while simultaneously depicting the rock in the stage after cutting the opening member into the rock.

In the drawing, FIG. 2 shows the expandable knife holders, including two-knife holders mounted on the largest diameter of the inner edge of the right disc of the release member

In the drawing, FIG. 3 shows a separate new two-leg holder in front view, FIG. 4 shows the same two-leg holder in side view, and FIG. with cutting knives.

On the largest circular circumferential surface 17 of the left disc 14 from its inner wall 14.2 with the right disc 15 from its inner side 5.2 there are progressive arrangements with each other, generally not overlapped in one another. the blades 13 were at a positive angle in the cut into the rock section 8,

Claims (1)

Cutting-off discs provided with knife holders on the outer surface, characterized in that not the largest circular peripheral fence (17) of the inner side (14,2) of the left disc (14) and of the inner side (15,2) of the right disc (15) there are fixed two-leg holders (16,1) provided with two cutting blades (13) inserted at a positive angle in the direction of the rock alignment (1) on the outer circular perimeter in a progressive arrangement, in continuity not overlapping one another;