RU2319006C2 - Pick lacing for cutter-loader cutting tool - Google Patents

Abstract

FIELD: mining, particularly cutter-loader drums, for instance pick lacing thereof.

SUBSTANCE: cutter-loader drum comprises cylindrical body with outer cylindrical surface, guiding members extending from cylindrical surface. Each guiding member is inclined relatively longitudinal drum axis. Each guiding member has a number of cutters having front surface, rear surface and side surfaces arranged so that front and rear surfaces are located between side ones. As drum rotates the cutters pass along cutting paths. Cutters moving along adjacent paths are spaced 30-100 mm apart in longitudinal direction. Said distance is measured between neighboring side surfaces of cutters moving along adjacent paths.

EFFECT: elimination or reduction of cutter wear and dust generation.

6 cl, 5 dwg

Description

FIELD OF THE INVENTION

The present invention relates to a drum of mountain combines and, in particular, to the arrangement of cutters on the drums of mountain combines continuous operation.

BACKGROUND OF THE INVENTION

Continuous mining combines are used for coal. However, they are also used in subterranean formations containing solid rock.

The continuous mining combine drum comprises a substantially cylindrical body from which guide elements protrude. Each guiding element contains a plurality of incisors mounted on it. The cutters may be of a pointed configuration or, in another embodiment, in the form of a bit. So, in the international application PCT / AU01 / 00960 (international publication WO 02/12677 A2), a description is given of a drum of a continuous mining combine with cutters in the form of a chisel. That is, these cutters have a front surface and a rear surface that converge to the cutting edge.

The location of the cutters on the guide elements is called a set of cutters. When the drum rotates, each cutter follows a cutting line.

Known pick tool designs have a number of disadvantages, including the lack of minimizing tool wear and dust formation.

The purpose of the invention

An object of the present invention is to eliminate or substantially mitigate at least one of the aforementioned disadvantages.

SUMMARY OF THE INVENTION

In accordance with the present invention, there is provided a drum of a continuous mining mining machine comprising a substantially cylindrical body having a longitudinal axis around which the drum rotates in a predetermined direction, a plurality of guide elements secured to the body and extending outward from the body from said axis, wherein each guide element extends longitudinally and at an angle relative to the axis, a plurality of stationary cutters attached to each guide element, each cutter having t the front surface, the rear surface and the side surfaces between which the front and rear surfaces extend, which converge from the aforementioned axis to the cutting edge, while during the rotation of the drum, each cutter follows a cutting line, and the cutters on adjacent cutting lines are longitudinally spaced apart from 30 to 100 mm, measured between adjacent side surfaces of the cutters on adjacent cutting lines.

According to a first preferred embodiment, the continuous mining mining drum is designed to operate on coal, with the cutters being spaced 50-90 mm apart.

According to another preferred embodiment, each cutter has a cutting edge of about 30 mm long.

According to another preferred embodiment, only one cutter is for one cutting line.

According to a further preferred embodiment, at least two cutters are for one cutting line.

In accordance with another additional preferred embodiment, the guide elements extend at an angle relative to said axis of 10 to 30 °.

Brief Description of the Drawings

The following is a description of a preferred embodiment of the present invention by way of example with reference to the accompanying drawings, in which the following is shown:

figure 1 depicts a schematic perspective view of a drum of a continuous mountain miner;

figure 2 is a schematic front view of the cutter used on the drum depicted in figure 1;

figure 3 is a schematic side view of the cutter shown in figure 2;

figure 4 is a schematic view of a diagram of a set of cutters on the drum depicted in figure 1;

5 is a schematic view of an alternative set of cutters.

Detailed Description of Preferred Embodiments

Figure 1 shows the drum 10 of a continuous mining combine. The drum 10 comprises a substantially cylindrical body 11 with an external cylindrical surface 12. From the surface 12, guide elements 13 and an end support element 14 pass. Each guide element 13 extends at an angle and longitudinally relative to the longitudinal axis 15 of the drum 10. In addition, each support element 13 extends radially outward from surface 12 relative to axis 15.

On each guide element 13 there are many cutters 16 at an angle of inclination from 40 to 55 °. The cutters 16 are fixed relative to their respective guide element 13 and protrude from it outward relative to the axis 15. The overall ring also contains cutters 16, which also protrude outward relative to the axis 15.

For example, if the drum 10 is designed to work on coal, the drum will rotate around axis 15 and move inside the coal seam. Cutters 16 hook on the coal and separate it from the formation, and then it is fed to the conveyor device. Each cutter 16 during the rotation of the drum 10 moves along the line (path) of cutting.

It should be understood that the drum 10 shown in FIG. 1 is similar to the drum disclosed in the aforementioned international patent application.

Each cutter 16 contains a shank 17, which the cutter 16 is attached to its corresponding guide element 13. The outer end of the shank 17 is equipped with a cutting head 18, which contains the front surface 19 and the rear surface 20. The surfaces 19 and 20 converge from the axis 15 to the cutting edge 21. Surfaces 19 and 20 extend between side surfaces 22.

The end 23 of the shank 17 is placed in the sleeve and the holder is mounted on the corresponding support element 13.

Cutters 16 are arranged according to the set of cutters. Two patterns of a set of incisors are shown in FIGS. 4 and 5.

The cutter set diagram shown in FIG. 4 is a cutter set diagram used on a drum 10 for operating on coal. The set of cutters shown in figure 5, is proposed for use on the drum 10 for sinking of solid rocks.

The set of cutters shown in figure 4, is a developed cylindrical surface 12 of the drum of a continuous mountain miner. The drum preferably rotates around its longitudinal axis in the direction of the arrow 24. This drum preferably contains end guide elements 25 and 26 with cutters 16 located along the guide elements 13. The drum also preferably contains a left section 27, a middle section 28 and a right section 29. Each of sections 27, 28 and 29 preferably contains a group of support elements 30, each of which contains many cutters 16.

As for the left section 27, the middle section 28 and the right section 29 of the core, the cutters 16 are dialed so that between the cutters 16 there is a predetermined distance in the direction of the longitudinal axis 15. In particular, each cutter 18 passes along the cutting line 31. Each cutter 16 on the corresponding line 31 is located at a distance from the cutter 16 on the next adjacent line 31, equal to S.

The distance S is the distance between adjacent side surfaces 22 of the cutters 16 on adjacent cutting lines 31. In the embodiment of FIG. 4, it is preferable to use a picking set such that the distance S is 50-90 mm. In this example, the cutters 16 preferably have a cutting edge 21 with a length of about 30 mm. Typically, the rotation speed of the drum is preferably 30-60 rpm. This provides the tip of each incisor 16 with a peripheral speed of about 1.76-3.52 meters per second.

The diagram of the set of cutters in figure 5 is intended for a drum for working on solid rock. In this embodiment, the distance S is 40-50 mm. Each cutter 16 preferably has a cutting edge 21 with a length of about 20 mm.

Sections 25 and 26 preferably comprise cutters 16 extending along the cutting lines 32.

Claims (6)

1. The drum of a continuous mountain harvester, comprising a substantially cylindrical body having a longitudinal axis around which the drum rotates in a predetermined direction, a plurality of guide elements attached to the body and extending from the body outward from the axis, each guide element passing longitudinally and at an angle relative to the axis, a plurality of incisors fixedly attached to each guide element, each incisor having a front surface, a rear surface and side surfaces between which the front and rear surfaces pass, which converge from the mentioned axis to the cutting edge, while during the rotation of the drum, each cutter follows a cutting line, and the cutters on adjacent lines are longitudinally spaced from each other from 30 to 100 mm measured between adjacent side surfaces of the cutters on adjacent cutting lines. 2. The continuous mining combine drum according to claim 1, designed to operate on coal, and the cutters are located at a distance of 50-90 mm from each other. 3. The continuous mining combine drum according to claim 1 or 2, wherein each cutter has a cutting edge of about 30 mm long. 4. The continuous mining combine drum according to claim 1 or 2, wherein one cutter is intended for one cutting line. 5. The continuous mining combine drum according to claim 1 or 2, wherein at least two cutters are intended for one cutting line. 6. The continuous mining combine drum according to claim 1 or 2, wherein the guiding elements extend at an angle relative to said axis from 10 to 30 °.

Images