Operating element of mining machine for coal extraction in formations with hard inclusions

FIELD: mining.

SUBSTANCE: The invention relates to mining, in particular, to design of operating element of a mining machine. The operating element of mining machine for coal extraction in formations with hard inclusions comprises a revolving gear and a cutting section installed on rotatable output gear shaft. A power transmission which rotates the output gear shaft of this revolving gear is installed inside the frame of revolving gear. The cutting section receives power pulses from unbalanced vibrator positioned inside of it. The cutting section is kinematically connected by coaxially positioned outer and inner torsion bars with output gear shaft and unbalanced vibrator respectively. The unbalanced vibrator is actuated through inner torsion bar. There is an additional transmission installed inside the frame of the revolving gear, which is positioned in parallel with the power transmission or the output gear shaft. This additional transmission rotates the inner torsion bar relaying the rotation to the unbalanced vibrator.

EFFECT: reduced size of operating element while retaining efficiency of extracting thin coal layers with hard inclusions.

5 cl, 4 dwg

 

The present invention relates to underground coal mining machines of the reservoirs with a capacity of from 0.8 to 1.0 m, and more specifically to the structure of the Executive body of the mountain harvester for the extraction of coal seams with solid rock inclusions.

It is known that the strength of such rock inclusions can be 812 units and above on a scale professional Dev and their destruction is difficult or ineffective under normal modes of operation mountain harvester for coal, resulting in the performance of the blasting of the rock mass is markedly reduced.

To maintain productive mining combine cutting part, for example, in the form of a screw cutters, its Executive body of the report for more efforts to enhance blasting solid rock inclusions in the array coal seam.

Using various technical means, but the most appropriate is zabalansovyj vibrator placed inside a rotating cutting part and tells her power pulses during the rotation of their non-balances. One of these Executive bodies of the mountain harvester disclosed in the publication of the Tula State University (the University) (proceedings of the Tula state University. Series machines, drive systems and machine parts. Issue 1. Tula. Publishing house of the University, 2004, str) and adopted for the prototype.

Investigatively organ mountain harvester for the extraction of coal seams with solid rock inclusions contains the rotary gear housed in a casing of the power transmission for rotation of the output gear shaft this gearbox and mounted on the output shaft of the rotary gear reducer rotating cutting edge, perceiving power pulses from debalancing vibrator inside her, while the cutting part kinematically connected coaxially arranged outer and inner torsion shafts respectively with output shaft-gear rotary gear and zabalansovymi vibrator driven in rotation through internal torsion shaft.

As follows from the above-described structure of the Executive body, for rotation of the non-balances of the vibrator and the housing of the cutting part, use the same transmission rotary gear, lowering the speed of the cutting part of the combine. However, to create significant value of the power pulses, which are transmitted to the rotating cutting part, it is necessary either to provide rotation of the non-balances vibrator with at least 20002500 rpm or increase their mass and accordingly the dimensions of the cutting part.

Due to higher dimensions is known of the Executive body use in mountain combines with the seam thickness from 1.4 m and more. For this reason, the development of low-power (0,81,0 m) coal bed of solid rock inclusions remains relevant.

The purpose of the invention is to solve this problem.

adaca of the present invention is the creation of an Executive body of the mountain combine with such a kinematic scheme of rotation of the cutting part and debalancing vibrator inside her which significantly reduce the size of the Executive body and would allow mining to combine productive work with the notch thin coal seams with hard rock inclusions.

This problem is solved using the proposed Executive body of the mountain harvester for the extraction of coal seams with solid rock inclusions containing the rotary gear housed in a casing of the power transmission for rotation of the output shaft of the gearbox and mounted on the output shaft to rotate the cutting part, perceiving power pulses from debalancing vibrator inside her, while the cutting part kinematically connected coaxially arranged outer and inner torsion shafts respectively with the output shaft of the gearbox and zabalansovymi vibrator driven in rotation through internal torsion shaft. According to the invention in the case of the rotary gear parallel to its power transmission drive shaft placed additional transmission for rotation of the inner torsion shaft for transmitting rotation gabalinskomu the vibrator.

In a preferred embodiment, a power transmission drive shaft of the gearbox and additional transmission debalancing vibrator placed in the additional cavities of the housing.

It is helpful to rotate both transmissions use one engine.

Preferably this motor is positioned inside the housing of the rotary gear.

In another preferred form of execution of the invention the inner torsion shaft connected at one end with additional gear transmission for axial longitudinal movement and the other end through the transfer gear with non-balances debalancing vibrator.

The main advantage of the present invention is that by using the above technical solutions can create an Executive body of the mountain harvester relatively small dimensions, which allow mountain combine to work the coal capacity of from 0.8 to 1.0 m with solid rock inclusions with satisfactory shipment smitten rock mass in the AFC.

The invention is further explained in the description of the example of implementation with reference to the accompanying drawings, on which:

Figure 1 shows the side placed on the conveyor mining the harvester with two Executive bodies according to the invention, the cutting part which is executed in the form of feature cutting tool auger;

Figure 2 is a partial side view of the Executive body according to the invention in an enlarged scale;

Figure 3 is a kinematic diagram and the supplementary body according to the invention;

4 is a structural implementation of the Executive body according to the invention in section along the line A-a in figure 2;

As shown in figure 1, mountain harvester 1 is mounted on a frame movable face conveyor 2 and can progressively move it through the mechanism 3 of the submission containing the actuator 4 with zvocnim wheel 5, are accommodated in the housing 6 mountain harvester 1, and ciocoiu rail 7 on the frame of the face conveyor 2, where zamochnoe wheel 5 is in engagement with zavoznoy rail 7. At the ends of the casing 6 combine symmetrically about him pinned Executive bodies 8 with a cutting part 9 in the form of a screw cutting tool, capable of turning in a vertical plane and fixed in a predetermined position of the hydraulic jacks 10, pivotally connected to the housing 6 of the combine harvester 1 and the housing 11 of the rotary gear 12 Executive bodies 8.

Inside 6 mountain harvester 1 is also a power generating unit 13 to provide and control the operation of electrical equipment (not shown) of the combine harvester 1 and the hydraulic unit 14 for the operation and management gidrooborudovanija harvester 1, in particular, oil station (not shown) and hydraulic jacks 10.

Figure 2 shows that the lower part of the housing 11 of the rotary gear 12 is closer to its cutting part 9 attached to concave about poorana form B, which helps when working position of the cutting part 9 education with the frame of the face conveyor 2, the maximum bandwidth of the window 15 for the passage of the smitten rock mass on conveyor 2, which is very useful when testing small capacity of coal seams.

It should also be noted that in the present invention as a cutting tool cutting part 9 of the Executive bodies 8 can be used in various combinations tangential cutters and disc milling cutter, which details not shown on this drawing.

The kinematic scheme of the Executive body 8 according to the invention, represented in figure 3, contains a power transmission 16 for transmitting rotation of the cutting part 9 and additional transmission 17 for transmitting rotation gabalinskomu the vibrator 18, the inside of the cutting part 9. Both the transmission 16 and 17 are rotated from being located in the housing 11 of the rotary gear 12 of the engine 19 and parallel to one another in separate cavities 20 and 21 respectively of the housing 11 of the rotary gear 12.

In this power transmission 16 receives the rotation from the motor 19 through a series of gears 22, 23, 24, sitting on the axes 25 and 26, and includes a gear 27, 28, 29, 30 and hollow output shaft gear 31. The latter is connected by a gear meshing with the sun gear 32 of the planetary is eductor 33, located inside the cutting part 9 of the Executive body 8. In turn, the sun gear 32 through the planetary gear 34 transmits rotation to the pinion carrier 35, which its toothed gearing connected with the outer torsion shaft 36, fastened with a cutting part 9 and causes it to rotate with a specified number of revolutions.

Additional transmission 17 includes a gear 37, 38, 39, 40, 41 and 42, where the gear 37 mounted on an axis 43, which is connected with the axis 26 of the power transmission toothed coupling 44, which is associated with progressive movable lever 45, which enables the toothed clutch 44. Thus there is a transfer of torque from the engine 19 additional transmission 17. Its gears 38, 39, 40 mounted movably on the axes 46, which also installed the gears 28, 29 and 30 of the power transmission 16.

The rotation of gear 42 additional transmission 17 is transmitted to the inner torsion shaft 47, which rotates the transfer gear 48 that communicates with the driven gears 49 de-balancers 50 debalancing vibrator 18. The internal torsion shaft 47 at one end is connected with the gear 42 for axial longitudinal movement, and at the other end with the transfer gear 48. Free axial movement of the inner end of the torsion shaft 47 is in the process of his skroce the project, in connection with which he is connected is movable relative to the gear 42.

We offer Executive body 8 with the above-described configuration may not work when using mountain harvester 1 in thin layers in two modes: for the extraction of coal and extraction of coal containment of solid rock inclusions.

Mining the coal only cutting part 9 receives the rotation from the motor 19 through a power transmission 16, beating the coal and producing its loading on the face conveyor 2 through the window 15 (figure 2).

When the excavation of coal from the solid rock inclusions cutting part 9 receives the rotation from the motor 19 through a power transmission 16 and simultaneously the power pulses from being located in her debalancing vibrator 18, the de-balancers 50 which rotate from additional transmission 17.

The switching of the Executive body 8 on the simultaneous operation mode of the power transmission 16 and the additional transmission 17 is carried out, as described above, using a notched clutch 44 that is controlled by a lever 45.

Figure 4 shows the design implementation of the Executive body 8, and all its constituent elements have the same numerical designation of the positions indicated in figure 3.

It should be noted here only some important work of the Executive body 8 points.

As can be seen in figure 4, the de-balancers 50 debalancing vibrator 18 R is Zmeiny in the cutting head 51 of the cutting part 9, making it possible to maximize the transfer of power pulses from the rotating non-balances exactly 50 of the cutting head 51 working, as you know, in the most difficult conditions in the destruction of the array layer, and thereby improve the performance of the conditions. In addition, in this arrangement the de-balancers 50 improves loading onto the face conveyor 2 is smitten rock mass screw cutting part 9, since the flow area between the blades of the auger cutting part 9 remains as possible.

In addition, figure 4 shows that the inner torsion shaft 47, torque zabalansovyj vibrator 8 is made hollow and placed inside the pipe 52 for supplying water to the cutting part 9 for cooling and dust control, as well as for cooling the torsion shaft 47 from the side of its inner cavity.

The main advantage of the invention is the ability to transfer significant power cutting part 9 with limited dimensions of the rotary gear 12 in the conditions of mining thin seams of coal from the solid rock inclusions mountain harvesters.

The invention may have various modifications perform within the limits arising from the following claims.

1. The Executive body of the mountain harvester for the extraction of coal seams with solid rock inclusions containing the rotary gear (12) is placed in the casing (11) power transmission (16) for rotation of the output gear shaft (31) of this turning gear (12) and mounted on the output shaft of the gear (31), with the possibility of rotation of the cutting edge (9), perceiving power pulses from debalancing vibrator (18)inside it, thus cutting part (9) kinematically connected coaxially arranged outer and inner torsion shafts (36, 47), respectively, with the output shaft-gear (31) of the turning gear (12) and zabalansovymi vibrator (18), driven in rotation through internal torsion shaft (47), characterized in that the housing (11) of the rotary gear (12) parallel to its power transmission (16) of the output gear shaft (31) placed additional transmission (17) for rotation of the inner torsion shaft (47)for transmitting the rotation gabalinskomu the vibrator (18).

2. The Executive body according to claim 1, characterized in that the power transmission (16) of the output gear shaft (31) of the turning gear (12) and additional transmission (17) debalancing vibrator (18) placed in a separate cavities (20, 21) of the housing (11) of the rotary gear (12).

3. The Executive body according to claim 1 or 2, characterized in that the rotation of both the transmission (16, 17) is used with a motor (19).

4. The Executive body according to claim 3, characterized in that the motor (19) is located inside the housing (11) of the rotary gear (12).

5. The Executive body according to claim 1, characterized in that the inner torsion shaft (47) is connected at one end with the gear (42) additional transmission is (17) with the possibility of axial movement and the other end through the transfer gear (48) with de-balancers (50) debalancing vibrator (18).



 

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