The executive body of the mining machine

 

(57) Abstract:

The invention relates to the mining industry and is intended for use primarily in the treatment harvesters. The Executive body consists mounted on the hollow shaft of the drive cylindrical housing rigidly mounted on the housing for loading the blade and mounted in grooves in the end surface of the blade holders and cutters are made with an end face of the blade cutting edges. Inside the housing is eccentric hub, facing the eccentric housing located external surface of the hub is arranged to transfer torque from the drive shaft directly to the chassis. The hub is attached to the housing by thrust washer and an annular groove made in the inner surface of the housing and through the support element, the two half-rings and retaining ring spring washer. The Executive body of the mining machine welded construction ensures the normal working conditions of miners, improves the performance of the harvester heavy Stopes, as well as the output of large-middle grades of coal and, therefore, reduces the output of the dust fractions. 4 C.p. f-crystals, 9 Il.

Known Executive body of the Shearer phase supply of water under pressure from 20 to 150 MPa (High pressure water jet assisted cutting system for shearer loaders". Mining magazine. September, 1987, 38, p. 238-241), including the gearbox with built-in radial-piston pumps, eccentric mounted roller bearing, check valve, cutters and sprinklers, with pistons reported directly from the mouths of the nozzles sprinklers.

The disadvantages of this Executive body are too high and unsafe for staff water pressure, high flow capacity required for deletepending pump (42 kW excess power consumed during idle rotation of the shaft of the Executive body) and the relatively low efficiency of dust suppression (relative to the traditional method of dust suppression using sprinklers indicator dust content of counted particles of dust remained unchanged despite the average reduction efforts feed the combine to 16%, reducing consumption of 40 mA per cent.

Known Executive body of the mountain Shearer (ed. St. USSR N 1265313, E 21 C 25/04, 27/24, publ. 1986 - second version), includes a rotating hollow drum with Windows and drive the movable breaker-shearing elements and their drive installed inside the drum drive copiers, grooves which are arranged with a variable distance from the drum surface, and the bumper-shearing elements are provided with two rollers, one of which is located in the guide drum, and the other in the groove of the drive Cam, thus driving the copier is made in the form of discs with grooves, the geometric axis of which is eccentric to the axis of rotation of the drum.

The main disadvantage of this Executive body is the design complexity and, therefore, low reliability.

The closest in technical essence is the Executive body of the mining machine, including fixed on the hollow shaft of the drive cylindrical housing rigidly mounted on the housing for loading the blade and mounted in grooves on the end surface of the blade holders and cutters are made with an end face of the blade cutting edges (ed. St. USSR N 1656119, E 21 C 25/04, publ. 1991).

This Executive authority inherent low is rpusa, has a cylindrical shape. In addition, when the Executive body cannot create a safe and healthy working conditions in high-load Stopes factors pylevzryvozashchity and dust suppression, because there is no internal wiring irrigation supply irrigation fluid to each cutter.

The positive effect of the invention is achieved in that, with regard to the General characteristics closest to the technical nature of the Executive body, it is provided inside a housing of the eccentric hub, while facing the eccentric housing located external surface of the hub is arranged to transfer torque from the drive shaft directly to the housing and to stiffen the installation of the hub it is attached to the housing by thrust washer and an annular groove made in the inner surface of the housing, and is attached to the drive shaft by means of the support element, the two half-rings installed in the annular groove of the shaft and clamping the support member to the hub, and the retaining ring spring washer installed in an annular groove made on the outer surface of the two half-rings, and ecodeco irrigation supply irrigation fluid to each cutter. The mouth of the internal wiring irrigation has a filter for the purification of irrigating fluid, for example, from mechanical impurities, while the filter is installed from the front side of the hollow shaft of the actuator. Direction, internal wiring irrigation is supplied by fill placed behind the cutter with a possibility of irrigating fluid to the cutting edge of the tool, with this sprinkler has a filter for the purification of irrigating fluid, for example, from mechanical impurities.

The rationale for the positive effect of the invention using the following distinctive features:

1. Before engineering the coal industry set a goal to achieve performance treatment combines 30-50 t/min vs. 10 t/min at the present time.

The weak point of the existing Executive is mounting screws on the drive shaft of the harvester through the cylindrical hub. At higher loads the above-mentioned fastening quickly fails.

2. The supply of the Executive body of the eccentric hub allows you to solve the problem. While facing the eccentric housing located external surface of the hub (hub) is performed possibility predatorially to the housing by thrust washer and the annular groove, performed on the inner surface of the housing, and is attached to the drive shaft by means of the support element, the two half-rings installed in the annular groove of the shaft and clamping the support member to the hub and the retaining ring spring washer installed in an annular groove made on the outer surface of the two half-rings.

3. To ensure safe and healthy working conditions in high-load Stopes factors pylevzryvozashchity and dust suppression Executive body has a welded construction and has an internal bussing irrigation supply irrigation fluid to each cutter. Improving the reliability of sprinklers (nozzles from clogging their nozzles is provided with installation in the mouth and line internal wiring irrigation of additional filters to clear irrigating fluid from mechanical impurities (main filter is installed outside of the Shearer).

4. In the known technical solutions are the hallmarks of this combination and the relationship was not found.

Summary of the invention "of the Executive body of the mining machine" is illustrated by a graphic image, where Fig. 1 is a schematic diagram of the Executive is 4 - thrust washer of Fig. 5 - section in Fig. 4; Fig. 6 - mount the hub on the shaft of the actuator and the mouth of the internal wiring irrigation; Fig. 7 - bushing to install the filter at the mouth of internal wiring irrigation; Fig. 8 is a view of the sleeve from the side in Fig. 7; Fig. 9 - cutter and fill with a filter in line with the internal wiring of irrigation.

The Executive body of the mining machine comprises a fixed on the hollow shaft 1 drive cylindrical body 2, is rigidly mounted on the housing for loading the blade 3 and are mounted in the grooves 4 on the end surface 5 of the blade holders 6 and the cutters 7 is carried beyond the end of the blade cutting edges 8.

The Executive body provided inside a housing of the eccentric wheel hub 9, while facing the eccentric housing located external surface 10 of the hub is arranged to transfer torque from the drive shaft directly to the housing and to stiffen the installation of the hub it is attached to the housing by means of thrust washers 11 and the annular groove 12, is made on the inner surface of the housing. On the other hand, the hub attached to the shaft of the drive means (Fig. 1 and 6) of the support element 13, the two half rings 14 mounted on oliza 16 spring washer 17, installed in the annular groove 18, is made on the outer surface of the two half-rings. This eccentric portion of the hub is located on the end side of the drive shaft.

The Executive body has an internal layout of irrigation (Fig. 1 and 6-9) with the supply of irrigating fluid on each cutter. The mouth of the internal wiring irrigation has a filter 20 for cleaning irrigating fluid from mechanical impurities, while the filter is installed from the front side of the hollow shaft of the actuator. Direction, internal wiring irrigation (see Fig. 9) provided with a nozzle 21 located behind the cutter 7 with a possibility of irrigating fluid to the cutting edge 8 of the tool, with this sprinkler has a filter 22 for additional purification of irrigating fluid, for example, from mechanical impurities.

The hub of the eccentric part has two holes 23 (Fig. 3-5) for fixing the thrust washer 11 in the annular groove 12. The other three holes are technological. The filter 20 located in the hollow shaft of the drive, mounted in the sleeve 24 by a threaded connection (Fig. 6-7). The sleeve 24 is rigidly mounted on the shaft end and has holes 25 and the sealing element 26 to prevent leakage of irrigation fluid.

Irrigating fluid penny organ mountain machine works as follows.

During rotation of the shaft 1 located eccentric outer surface 10 of the hub 9 transmits torque directly on the cylindrical body 2 and loading the blade 3, the end surface 5 which is equipped with cutters 7 is carried beyond the end of the blade cutting edges 8.

For the reliability of the eccentric hub 9 is rigidly mounted. On the outside and it is attached to the housing 2 by means of thrust washers 11 and the annular groove 12, and the hub and thrust washer are fastened to the screw connection. The inner side of the hub is attached to the shaft 1, based on the reference element 13. The supporting element 13 is pressed against the hub by means of two half rings 14. The half rings are fixed in the annular groove 15 of the shaft ring 16 and the spring washer 17.

Cleaned from mechanical impurities irrigating fluid (1st stage cleaning is done outside of the mining machines) flows through the hollow shaft 1 to the filter 20, which is 2-nd stage of purification. The filter 20 is installed in the mouth of internal wiring irrigation 19 and is connected to the sleeve 24 by means of the thread. The sleeve 24 is rigidly mounted on the end of the shaft 1 and has a sealing element 26 to prevent leakage of irrigation fluid. Of the sleeve 24 further is coupled to the nozzle 21. Irrigating fluid in the filter 22 passes the 3rd stage cleaning and served on a cutting edge 8 of the cutter 7, which comes into contact with the friction sparks and dust particles, providing explosion protection and improvement of environmental conditions.

Experimental verification of the Executive body of the mining machine implemented in bench and mine conditions. The overhaul in 2-2,5 times higher than the nearest equivalent.

The base object (log, "Coal", 1996, No. 5, S. 30) contains the Executive bodies of the Shearer with a cylindrical hub, the reliability of which, as shown by experimental verification, in 2-2,5 times lower than that proposed by the Executive body.

We offer Executive body of the mining machine eliminates the disadvantages of the nearest analogue and especially the underlying object. Supply his eccentric hub and additional cleaning system irrigating fluid helps to ensure safe working conditions, increase reliability, and consequently, to improve the performance of the Executive bodies of heavy Stopes, as well as to increase the output of large-middle grades of coal and, therefore, reduce the release of dust fractions.

1. ISOE is installed on the housing for loading the blade and mounted in grooves in the end surface of the blade holders to put an end face of the blade cutting edges, characterized in that it is provided inside a housing of the eccentric hub, while facing the eccentric housing located external surface of the hub is arranged to transfer torque from the drive shaft directly to the housing and to stiffen the installation of the hub it is attached to the housing by thrust washer and an annular groove made in the inner surface of the housing, and is attached to the drive shaft by means of the support element, the two half-rings installed in the annular groove of the shaft and clamping the support member to the hub and the retaining ring spring washer that is installed in the annular groove, performed on the outer surface of the two half-rings.

2. Executive authority under item 1, characterized in that the eccentric portion of the hub is located on the face side of the hollow drive shaft.

3. Executive authority under item 1, characterized in that it has an internal bussing irrigation supply irrigation fluid to each cutter.

4. The Executive body paragraphs.1 and 3, characterized in that the mouth of the internal wiring irrigation has a filter for the purification of irrigating fluid, for example from mechanical PP.1 and 3, characterized in that direction, internal wiring irrigation is supplied by fill placed behind the cutter with a possibility of irrigating fluid to the cutting edge of the tool, with this sprinkler has a filter for the purification of irrigating fluid, for example, from mechanical impurities.

 

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