Full-face machine

FIELD: mining; apparatus for making tunnels in underground mining of minerals.

SUBSTANCE: machine includes undercarriage representing a frame whereon caterpillar trucks are attached and trunnion axes of a working head gearbox together with a rotary working head, loading buckets, berm mills, cutting drums, gathering blades, conveyer and protection cowl mounted on supports of said frame. Hydraulic lift cylinders of the working head gearbox are attached to this frame, rods of said cylinders are attached to the working head housing and all rotating parts of said rods are set into bearings equipped with a force lubrication system. The lubrication system includes pump, pressure pipeline, manifolds and system of distribution tubes leading to gear shaft bearings of the gearbox. The undercarriage frame has two tightly closed cavities, wherein a pressure line between the pump and manifolds is positioned being made in the form of coils. Both cavities of the frame are filled with cooling fluid.

EFFECT: cooling of lubricating fluid within the lubrication system; increasing the life of gear shaft bearings of the machine gearbox; decreasing the ambient air temperature; enhancement of working conditions for the operating staff.

4 dwg

 

The invention relates to equipment for carrying out excavations in underground mining.

Known continuous miner containing suspension, which represents a frame, on which the right and left sides of the fixed left and right crawler truck, and on support frame installed the trunnion axis of the drive gear of the Executive body with the rotor Executive body, loading buckets, bemovie cutters, the cutting reel, pick guards, conveyor, separating off the shield on the frame is also fixed cylinders gearbox Executive body, the rods are fixed on the gear, all rotating parts which are installed in the bearings, equipped with forced lubrication system including suction lines, pump, discharge pipe, collectors and system the distribution pipes to the bearings and gears of the gear [1].

The disadvantage of such a harvester is that during intense modes of the rotating parts of the harvester is overheating of bearings, especially in the gearbox of the Executive body, where the shafts of the gears perceive large cutting forces from the Executive, which leads to failure of the bearings, to increase the temperature of the environment that adversely affects the I on the working conditions of staff.

An object of the invention is the cooling of lubricant in the lubrication system, increasing the durability of the bearings of the shafts of gears of the gear unit, decrease the ambient temperature, thereby improving the working conditions of staff.

The technical result is achieved by the fact that the harvester shaft sinking containing suspension, which represents a frame, on which the right and left sides of the fixed left and right crawler truck, and on support frame installed the trunnion axis of the drive gear of the Executive body with the rotor Executive body, loading buckets, bemovie cutters, the cutting reel, pick guards, conveyor, separating off the shield on the frame is also fixed cylinders gearbox Executive body, the rods are fixed on the case, all rotating parts are mounted in the bearings, equipped with forced lubrication system including a pump, pressure pipeline, reservoirs and distribution system pipes on the bearing shaft gear reducer, frame chassis has two hermetically closed cavity, and the discharge pipe between the pump and reservoir are made in the form of coils placed in these cavities, both frame cavity filled cooling is incostly.

1 shows a harvester shaft sinking, figure 2 is a side view of the frame of the harvester, figure 3 is a top view, figure 4 - section a-a in figure 1.

Harvester shaft sinking contains chassis, representing a frame 1, on the right and left sides of which are fixed caterpillar truck 2, the frame 1 has a support 3, which is installed with the axis 4 of the pins of the gear 5 of the cutter drive with the possibility of rotation in the vertical plane. On the frame 1 fixed 6 cylinders control the rotation of the gear 5 of the cutter drive rods which are fixed to the housing 5.

The gear 5 of the cutter drive contains a system of gears rigidly mounted on shafts mounted in the housing 5 in the bearings. On the output shafts and the gearbox 5 is rigidly mounted rotary Executive body 7 in the form of a coaxially located borax and crosses with loading buckets 8, bemovie cutter 9 with pick guards 10 and the cutting drums 11. The gear 5 is also mounted conveyor 12 and between the shield 13.

Gears and bearings of the gearbox 5 is equipped with forced lubrication system including a pump 14, the pressure line 15 and the reservoir 16 and the system of distribution pipes on the bearing shaft gear reducer 5.

The frame 1 has two tight Polo is t 17, filled with coolant. Discharge pipe 15 between the pump 14 and reservoir 16 in the form of coils placed in these sealed cavities 17.

Harvester shaft sinking works as follows.

When conducting mining in the ore array harvester shaft sinking is the destruction of the array by the Executive body 7 combine with the formation of cylindrical cross-section generation. Buckets 8 repulsed mountain mass rises from the ground and loaded onto the conveyor 12, which is transported and offloaded to the following vehicle. Bemovie cutters 9 is formed a flat surface soil along the edges of the cylindrical sections elaborate, opposite caterpillar trucks 2, pick guards 10 clean soil and selected spillage. The cutting drums 11 are cut remaining jumpers for the formation of arched cross-section generation. The movement of the submission of the Executive bodies is working stroke caterpillar trucks 2 combine to an array.

The trajectory of movement of the harvester depends on the location of sylvinite seam in the mountain massif. Therefore, if the reservoir goes below or above the cylinders 6 rotate the gear 5 on the axis 4 of the trunnions in the bearings 3 of the frame 1. Since the gear 5 mounted in the Executive bodies 7, bemovie cutter 9 with pick guards 10, otres the e drums 11, the conveyor 12 and enclosing the shield 13 - they all form a single system, which is rotated together with the gear 5. However, the elaboration invariably has an arched cross-section, soil polished pick guards 10, serves as a way to move the caterpillar trucks 2 processor.

However, at large angles of inclination of the gear 5 relative to the horizon line requires a forced lubrication system for the bearings of the shafts of gears. To do this, it is fed to the system distribution tubes from the pump 14 through the discharge pipe 15 and the reservoir 16 bring the oil to the bearings of the shafts of gears. The pump 14 creates a pressure in the delivery pipe 15, through which the oil distribution tube is fed to all bearings, shafts, gears.

During operation of the harvester bearings and gear reducer perceive large load, which invariably increases the temperature of the oil, and as it circulates in a closed hydraulic system of the combine, it must be cooled. For its cooling is provided by a cavity 17 in the frame 1 of the harvester, which filled the coolant and in which coils are the discharge pipe 15 with butter. In these cavities 17 oil during the passage of the coils gives off heat of the coolant is thereby itself is cooled. In addition, Zap is the implementation of the cavities 17 of the frame 1 by the liquid leads to an increase in the weight of the harvester without increasing its metal, what a positive effect on the stability of the machine in the cutting process.

Thus, the proposed design of the harvester shaft sinking eliminates overheating of lubricant in the system of the combine, improves the conditions of the bearings of the gearbox of the Executive body of the harvester, contributes to the improvement of working conditions of staff.

Sources of information

1. The operation of the digging machine PC-8M / Kaahani, Vthread, Whiteline and others; ed. 2nd, revised and enlarged extra - M., Nedra, 1978. - .38, 69-71.

Harvester shaft sinking containing suspension, which represents a frame, on which the right and left sides of the fixed left and right crawler truck, and on support frame installed the trunnion axis of the drive gear of the Executive body with the rotor Executive body, loading buckets, bemovie cutters, the cutting reel, pick guards, conveyor, separating off the shield on the frame is also fixed cylinders gearbox Executive body, the rods are fixed on the case, all rotating parts are mounted in the bearings, equipped with forced lubrication system including a pump, a discharge pipe, a reservoir and a system of distribution pipes on the bearing shaft gear reducer notable is the frame of the chassis has two hermetically closed cavity, and the discharge pipe between the pump and reservoir are made in the form of coils placed in these cavities, both frame cavity filled with coolant.



 

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