Coal-extractive drum combine, method for loading coal on conveyor, drum executive tool of cleaning combine, mechanism for hoisting executive tool of combine, mechanism for increasing stability of combine, feeding mechanism of combine

FIELD: mining industry.

SUBSTANCE: combine has main body, drive, feeding mechanism and executive tool, which is made in form of drum with horizontal rotation axis. It is placed at non-straight angle to longitudinal conveyor axis and is turned in horizontal plane in direction providing for displacement of trajectory of coal output towards conveyor. Drum has cylinder, on outer surface of which in certain order cams with cutters are fixed. Inside the cylinder three or five electric engines are placed. These are inserted in parallel in recesses of fixed body with inner teeth of sun ring of planetary gear, which interact with three satellites. Output shafts of three or five electric engines interact with one common cog-wheel. It is placed coaxially with planetary gear and engaged with it by torsion shaft having two cog tail pieces. One of tail pieces interacts with inner slits of wheel hub, and another interacts with teeth of three satellites of planetary gear. Mechanism for hoisting drum mechanism along bed massive has handle raising jack and handle with horizontal rotation axis placed in horizontal plane at non-straight angle to conveyor axis and turned to direct displacement of executive tool towards pit-face. Shoes of stability mechanism for combine are provided with reverse clamps for shelves on front pit-face and back dump sides of conveyor. Back support of conveyor on soil is placed on dump end of inter-section beams. Combine feeding mechanism has drive for chainless feeding system and leading sprocket. Sprocket interacts with fingers of conveyor rack. Drive is placed beyond handle of executive tool and is made in form of separate electric engine with reducer of self-braking worm type. Engagement of sprocket with fingers is guaranteed by reverse clamp of reducer engaging back planes of conveyor rack carrying these fingers. In method for loading coal on conveyor, drum rotation axis in plane around vertical axis is turned in certain direction to turn trajectory of coal towards conveyor. Movement of mining drum along conveyor is performed first along ceiling, and then along soil along coal output direction while providing for cleaning of soil in direction of frontal movement of conveyor to pit-face.

EFFECT: lesser dimensions, lesser mass, higher quality of operation.

7 dwg

 

The invention relates to the mining industry, mainly for stoping formation of coal deposits using treatment combines and scraper conveyors in the mechanized complexes.

Known shearers for seams of medium thickness type PKY10, RKU, RKU, RCU and RCU with twin screw Executive bodies at the ends of the machine for work on chelnokova scheme or for unilateral work with brushing stroke (see, e.g., V.N. Chorin, etc. the Development of technology for underground coal mining, potash and manganese ores. M., Nedra, 1985, p.69-72, Fig. 24).

Motors all harvesters RKU have a capacity of 200 kW, and on the first three types have one motor on the harvester; and in the last two two electric motors.

Known harvester type GSB with one motor 160 kW capacity on both the auger and one motor for driving the pumping station for chainless feed system (see, e.g., A.A. puffins. The driver of mining excavation machinery. M., Nedra, 1991, str, Fig. 3.20).

Known shearers, including a main body, a drive mechanism and an Executive body, which is made in the form of a drum with a horizontal axis of rotation, and is used as a prototype (see, e.g. VI Malt and other Design and construction of mining machines and complexes. M., Nedra, 1982, Tr).

The disadvantage of these harvesters is the low drive power, high weight and the length of the harvester, design complexity, and high energy consumption blasting and coal loading screw Executive bodies, reducing the grade of the mined coal.

The known method of loading the coal on the conveyor, in which the Executive authority in the form of screws performs as a function of cutting and function of loading coal (see, e.g., LI Kantowicz, NR. Getpanel. Mining machines. M., Nedra, 1989, p.65).

The drawback of this method is that only 60-70% of extracted coal is loaded onto the conveyor by the feed screw. For loading conveyor on the rest of the coal is necessary to apply additional loading flaps, complicating the design of the harvester and require auxiliary operations maintenance (cleaning pads and replacing them with the use of additional gears and clutches).

The known method of loading the coal on the conveyor, whereby carry out the rotation of the cutting drum about the horizontal axis with the release of broken coal and the movement of the cutting drum along the pipeline (see, e.g., RU # 2130554, publ. 20.05.1999). This method is used for the prototype.

The advantage of the prototype of this method of loading the coal on the conveyor is the fact that the breaker drums made with conical customershere diameter, facing the bottom, providing on the newly machined surface of the bottom chamfer the soil, facilitating the loading of coal at high conveyor through the creation of the slaughter at podviganiya pipeline "prism bulging", known from theory of bulk phone

The disadvantage of the prototype from the point of view of loading coal on the conveyor is the location of the axis of rotation of the drum in an inclined plane that is not parallel to the soil surface and the roof, which requires regular adjustment of the axis of rotation of the drum each time the transition from the ground to the roof and Vice versa.

The current level of technology known drum Executive body of the Shearer with a horizontal axis of rotation, comprising a cylinder, on the outer surface of which is fixed in a certain sequence fists with cutters. It is simple in design, but can't load the coal on the conveyor (see e.g. LI Kantowicz, NR. Getpanel. Mining machines. M., Nedra, 1989, p.66).

The disadvantage drum Executive bodies with a horizontal axis of rotation is poor loading capacity, and therefore they are used only in harvesters of the type A70 and KND working on steep formations (see, e.g., VI Malt and other Design and construction of mining machines and complexes. M., Nedra, 1982, str).

Known drum performer of the initial body of the Shearer with a horizontal axis of rotation, includes cylinder, on the outer surface of which is in a specific sequence attached to the fists with the cutters on the patent of Russian Federation №2130554, publ. 20.05.1999. This device is a prototype of the invention. The harvester has a chipping drum, inside which are mounted three motor located on a circle around the centrally located planetary reducer, the output shaft of which carries an air dryer.

The advantage of this drive is its simplicity due to the presence of only one pass instead of four or five speed transmission from the axis of the motor to the main planetary gear set. The second advantage is the large drive power from three electric motors instead of one, and full autonomy of the actuator from the point of view of its mounting and moving.

Known mechanisms of the rise of the Executive bodies of the thickness of harvesters, comprising a rotatable handle with a horizontal axis of rotation and the Jack lifting the handle (see, e.g., A.A. puffins. The driver of mining excavation machinery. M., Nedra, 1991, str, 241, Fig. 3.9, 3.22, 3.23). This mechanism is adopted for the prototype.

The disadvantage of this mechanism is non-parallelism of underworked roof in the case of the use of screws or drums with an inclined or rotated by the rotation axis.

A known mechanism for improving the sustainability of harvesters from the activities of the FL pop-up effort on the part of the face when cutting coal, especially the hard coals with resistance up to 350 kN/m, the reservoir rock layers. This mechanism is adopted for the prototype. It includes front and dammed skis harvester and conveyor coupling beam, the rear pillar on the soil and rake (see, e.g., LI Kantowicz. Mining machines. M., Nedra, 1989, p.63).

The current level of technology known mechanism to increase the stability of the harvester from tripping reactions from the side of the face, including the front and dammed skis harvester and conveyor, provided with a back support and the rail (see, e.g., EN 2170350 C1 of 10.07.2001). This source is taken as a prototype.

To the means for increasing resistance is the increased weight of the harvester, the reduction in width (uzkozahvatnoj notch), an increase in the size of the base between the supports of the combine to the pipeline.

The disadvantage of these mechanisms is their incompleteness, failure to use the weight of the pipeline, the need for a significant increase in the weight of the harvester, its size in length and width, the necessity of cutting with a slight thickness of the removable chip and the need in this regard, increasing the number of working cutters, increase the intensity of cutting.

Known mechanism Shearer 1gsh68 cutter-headers, GSB adopted for the prototype and including the drive chainless feed system and the output sprocket, interacting with Altamirano pipeline (see, e.g., A.A. puffins. The driver of mining excavation machinery. M., Nedra, 1991, str, 238).

Lack of mechanism are the large dimensions of the supply system, its complexity and, consequently, uncertainty, complexity, automation, emergency braking, speed control of feed depending on the strength of coal and performance of coal extraction.

Object of the invention is the reduction in size and reduction in weight of the harvester, increasing the installed power of the Executive body, improving the performance of the processor, increasing the loading capacity of the drum of the Executive bodies, the elimination of the loading plates and the lower energy process of loading coal, the effective loading of coal on the conveyor, the simplification of the gearbox, ensuring the parallelism of the Executive body to the soil podrubaev the roof surface when changing removable capacity of the reservoir, increasing the cutting resistance, the ability to work with large chips (power cut).

This task is solved in that in cleaning the harvester, including the main body, the drive mechanism and the Executive body, which is made in the form of a drum with a horizontal axis of rotation, according to the invention, the axis of rotation of the drum is under indirect angle to the longitudinal axis of the conveyor and turn the and in the horizontal plane in the direction providing the offset of the trajectory of the ejection of the broken coal in the direction of the pipeline.

This task is solved in that in the method of loading the coal on the conveyor, whereby carry out the rotation of the cutting drum about the horizontal axis with the release of broken coal and the movement of the cutting drum along a conveyor according to the invention, produce a reversal of the axis of rotation of the drum in a plane around a vertical axis in the direction to the trajectory of the broken coal is turned in the direction of the conveyor, with the formation of the shape of the face in the form of an ellipse with rounded mating face with the ground and the roof and the reduction of resistance in front of the advancing conveyor to the bottom and the stress concentration in the roof, and the movement of the cutting drum along conveyor produced first on the roof, and then on the ground in the direction of departure of extracted coal ensuring Stripping the soil directly in front of the frontal advancing the conveyor to the slaughter.

This task is solved in that the drum of the Executive body of the Shearer with a horizontal axis of rotation, comprising a cylinder, on the outer surface of which is in a specific sequence attached to the fists with the cutters, according to the invention, inside the cylinder, there are three or five motors that are installed in parallel in bore still what about the housing, to which pribolsan ring gear with internal teeth, representing the sun wheel of the planetary gear to interact with three satellites, and the output shafts of these motors are in mesh with a common gear wheel located coaxially with the planetary gear and connected with it by means of a torsion shaft having two toothed shank, one of which communicates with the internal splines of the hub common toothed wheel and the second toothed shank cooperates with the teeth of the three satellites planetary gearbox.

This task is solved in that the lifting mechanism of the Executive body of the harvester capacity of the reservoir, including turning the handle with a horizontal axis of rotation and the Jack lifting the handle, according to the invention, the axis of rotation of the handle is in the horizontal plane under indirect angle to the axis of the conveyor and rotated in plan in the direction of displacement of the Executive body to the side of the face.

This task is solved by the fact that the mechanism of increase of stability of the harvester from tripping reactions from the side of the face, including the front and dammed skis harvester and conveyor coupling beam, the rear pillar on the soil and rake according to the invention, equipped with a reverse grips, mounted on skis combine that with the fact the pipeline has guides on the front face side of the clutch with reverse grip front skis, and rake installed on the goaf side of the conveyor and is made with a back-plane, for which we cling reverse grips avalanche ski harvester, and the rear bearing of the conveyor on the ground is situated on the dam end of the coupling beams.

This task is solved in that the feed mechanism of the combine, including the drive chainless feed system and the output sprocket interacting with fingers rail of a conveyor according to the invention, the feed drive is in the plan for the handle of the Executive body and is made in the form of a separate motor with gear effect of the worm type, to provide adhesion of the output sprocket with the fingers of the slats of the conveyor rail is made with a back-plane, for which we cling reverse grips avalanche ski harvester.

Figure 1 presents a General view of the harvester, the cross section at the bottom, figure 2 presents a view from the side of the face, figure 3 is a view in plan, figure 4 - diagram of the operation of the harvester, figure 5 shows the device of the drum, the cross section, figure 6 - view of the drum from the side of the face, figure 7 shows the diagram of the graphical calculation of the gear ratio of the gearbox and cutting speed.

Harvester 1 includes an air drum 2 with a handle 3 and the Jack 4, the housing 5 with the front ski 6 reverse grip 7 (first pillar) and the dammed l is, by Mesdames 8 reverse grips 9 (second and third pillar of the harvester), the input part 10 with the electric motor 11, the worm gear 12 and the output sprocket 13, which interacts with the rail 14 of the conveyor 15, electrohydraulic control 16 with the bracket 17 to hold the bridle 18 winder has 19 located in the chute 20 is fixed on the goaf side of the conveyor 15. The conveyor rests on the ground the front toe 21, fulfilling the role of a plow blade, and the rear support 22, which referred back to the dam end of the coupling beams 23 connected to the goaf side of the conveyor rigidly in a vertical plane through a vertical finger 24. Becoming pipeline has guides 25 on the front face side of the conveyor and on the rear side bearing rail 14 with the fingers, made with a back-plane, for which we cling reverse grips dam of 8 ski harvester. The presence of the tricycle frame with reverse grips allows the harvester with the minimum length and minimum weight.

The method of operation of the harvester for the blasting of coal and loading it on the conveyor belt according to the diagram in figure 4 is as follows.

In the first period is the movement of the harvester in the direction of the cutting drum with the breaking of the upper part of the reservoir (in the drawing when moving from left to right, item 27). This dryer works area 180 degrees and unloading of coal is at the bottom of the drum with the trajectory of the batted ug is I, directed back and to the side of the conveyor as the drum is rotated in the angle of about 15 degrees.

The shape of the face after the passage of the harvester has an elliptic cross section with a curved mates with the roof and the ground, which reduces the degree of stress concentration due to rock pressure and creates favorable conditions for shifting rod on the bottom without encountering resistance when approaching rod to the slaughter.

After blasting the entire tape harvester is stopped and the drum is lowered down to the soil layer and is included reverse Shearer (in the drawing from right to left, p).

During the reverse movement of the harvester, clause 29, is a wiper stroke with a cutting zone of the drum 0...90 degrees depending on the capacity of the reservoir, with partial breaking of coal and with the full sweep of the soil to ensure the subsequent front-feed conveyor at the bottom without significant drag. While clearing the soil flow repulsed mass of coal from the dryer is directed in the direction of the pipeline.

The lifting mechanism of the Executive body is arranged in such a way that regardless of the thickness of the roof is always podobaetsa horizontally. This is achieved by the fact that the horizontal axis of rotation 30 is not perpendicular to the axis of the conveyor and turned about 15 degrees in the direction of displacement of the Executive body in the example is in relation to the slaughter.

Drum of the Executive body consists of three or five motors 31, is inserted into three or five bores stationary casing 32, to which pribolsan ring gear with internal teeth 33, which is on the kinematic scheme of a sun wheel of the planetary gear 34, coupled simultaneously with three gear 35 satellites, rotating on axes 36, arranged in nests monolithic output shaft 37 of the planetary gear. The output shafts of all of the motors through a high-speed gear 38 coupled with a common toothed wheel 39, which is located coaxially with the planetary gear, with which it is connected through the torsion shaft 40. The torsion shaft has a toothed shank 41, one of which is coupled with the internal splines of the wheel 39, and the second interacts with both the teeth of the three satellites 35 of the planetary gear.

The output shaft 37 of the planetary gear is supported by two spherical bearing 42 and 43 and through the slotted flange 44 is connected to the cylinder 45 of the cutting drum 2.

In the housing 32 has three slots for electroboxes 46 for the passage of the three cables and two holes 47 for the water inlet and outlet cooling of electric motors. The base 32 is welded to the sleeve 48 for connection with a handle 3.

In the center of the housing and along the axis of the planetary gear skipped the pipeline is od 49 for supplying water to the steering nozzle 50, providing water supply to the nozzles of each irrigation cutter 51, rotating together with the cylinder 45 of the cutting drum 2.

The power supply and the supply water pressure is received by the harvester from the winder has 19 in electrohydraulic control 16. Next on the handle 3 are three electric cable 52 to connect the three electric motors, two hose 53 to the water cooling of the motors 2 and one hose 53 for irrigation in the area of the incisors. Two hose 54 to the power piston and the rod end of the Jack 4 go directly from hidraulica to Jack lift drum.

The advantage of the reduction gear mechanism within the drum is a significant simplification of the gears, resulting in 4-5 pairs of gear wheels, which are used usually in the drive made from the motor through the reduction gear in the handle, just replaced one wheel 39. Figure 7 shows the diagram of the graphical calculation of gear ratio and speed of cutting, which must be within 3...4 m/S.

i=tga/tgu=6,78/0,186=36,4

n=1450636,4=39,8 rpm

v=πdn/60

v=π·1,75·39,8/60=3,65 m/S.

The calculation showed that this condition is entirely provided by a single wheel 39.

The advantage of the feed drive is the fact that it is made completely independently from the mechanisms of the harvester, is placed over the handle of the harvester does not have hydraulic pumps and hydraulic motors for the em use a separate electric motor 11 and the effect of the worm gear, which power outage provides retention of the harvester in place at any angle of incidence of the reservoir. The necessary assurance engagement sprocket 13 with the fingers of the rail 14 is achieved by the presence of capture through the ski 8 of the machine opposite the plane of the rails 14.

The main advantage of the invention is a large installed power of the Executive body in 3...5 times higher than the known, low weight and dimensions of the harvester, also 3-4 times less than in the prototypes, the best loading of coal on the conveyor, full o people of the stope and the sharp increase in the speed of movement of the harvester and its performance.

1. Shearer, comprising a main body, a drive mechanism and an Executive body, which is made in the form of a drum with a horizontal axis of rotation, wherein the axis of rotation of the drum is under indirect angle to the longitudinal axis of the conveyor and rotated in a horizontal plane in the direction that provides the offset of the trajectory of the ejection of the broken coal in the direction of the pipeline.

2. The method of loading the coal on the conveyor, whereby carry out the rotation of the cutting drum about the horizontal axis with the release of broken coal and the movement of the cutting drum along the conveyor, characterized in that to produce the reversal of the axis of rotation of the drum in the plan is around the vertical axis in the direction to the trajectory of the broken coal is turned in the direction of the conveyor, with the formation of the shape of the face in the form of an ellipse with rounded mating face with the ground and the roof and the reduction of resistance in front of the advancing conveyor to the bottom and the stress concentration in the roof, and the movement of the cutting drum along conveyor produced first on the roof, and then on the ground in the direction of departure of extracted coal ensuring Stripping the soil directly in front of the frontal advancing the conveyor to the slaughter.

3. Drum Executive body of the Shearer with a horizontal axis of rotation, comprising a cylinder, on the outer surface of which is in a specific sequence attached to the fists with the cutters, characterized in that the inside of the cylinder is placed a three or five motors that are installed in parallel in bore stationary casing to which pribolsan ring gear with internal teeth, representing the sun wheel of the planetary gear to interact with three satellites, and the output shafts of these motors are in mesh with a common gear wheel located coaxially with the planetary gear and connected with it by means of a torsion shaft having two toothed shank, one of which communicates with the internal splines of the hub common gear to the ECA, and the second toothed shank cooperates with the teeth of the three satellites planetary gearbox.

4. The lifting mechanism of the Executive body of the harvester capacity of the reservoir, including turning the handle with a horizontal axis of rotation and the Jack lifting the handle, characterized in that the axis of rotation of the handle is in the horizontal plane under indirect angle to the axis of the conveyor and rotated in plan in the direction of displacement of the Executive body to the side of the face.

5. The mechanism of increase of stability of the harvester from tripping reactions from the side of the face, including the front and dammed skis harvester and conveyor coupling beam, the rear pillar on the soil and rake, characterized in that it is equipped with reverse grips mounted on the ski-harvester, the pipeline has guides on the front face side of the clutch with reverse grip front skis and rake installed on the goaf side of the conveyor and is made with a back-plane, for which we cling reverse grips avalanche ski harvester, and the rear bearing of the conveyor on the ground is situated on the dam end of the coupling beams.

6. The feed mechanism of the combine, including the drive chainless feed system and the output sprocket interacting with the fingers of the slats of the conveyor, characterized in that the feed drive races is halogen to handle the Executive body and is made in the form of a separate motor with gear effect of the worm type, at the same time to ensure the clutch output sprocket with the fingers of the slats of the conveyor rail is made with a back-plane, for which we cling reverse grips avalanche ski harvester.



 

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