CN205858337U - Super high seam three flitting - Google Patents

Abstract

This utility model belongs to the research and development manufacture of comprehensive mechanized coal mining equipment, Coal Mining Technology field, in order to enable the most fully to exploit more than 8m super high seam, this utility model provides a kind of super high seam three flitting, the front cutting units cut middle level coal of coal-winning machine, the day-coal of middle cutting units cut work surface, lower floor's coal of rear cutting units cut work surface and coalingging, front roll is by after the gap of coal seam, top seam is unsettled, release the pressure of top seam, the coal cutting load of middle sweeping top cylinder can be greatly reduced.This utility model utilizes three cylinders that rib is divided into upper, middle and lower-ranking to carry out cut simultaneously, thus disperse cut to load, reach to reduce coal-winning machine cutting power, reduce the purpose that single rocking arm cut loads, by cooperating of three cylinders, can smoothly complete end cut sth. askew feed, sweep the end, clear float coal, cut the techniques such as Triangle Coal, the exploitation for more than 8m super high seam provides a kind of feasible full-seam mining cutting process.

Description

Super high seam three flitting

Technical field

This utility model belongs to the research and development manufacture of comprehensive mechanized coal mining equipment, Coal Mining Technology field, is specifically related to a kind of special thick Coal seam three flitting.

Background technology

Along with the development of coal mine work area high working face technology, define coal mine work area full-seam mining 7m Production practice, coal-face can realize producing 800M～1000Mt per year, " an ore deposit one side, an exploiting field, a production line " occurs High-efficiency intensifying production model, relevant outfit also achieves bigger technological progress, has basically formed to have and has independently known Know mining height workface complete set technology and the equipment architecture of property right.The especially recovery method of super high seam full-seam mining has life Produce the advantages such as efficiency is high, resource recovery is high, production practice is simple, maintenance management is convenient, increasingly obtain the general of coal mine user All over accreditation, it has also become one of method for optimizing of thick coal-layer mining both at home and abroad.

By market survey, in China Shaanxi, the Inner Mongol, Shanxi, Xinjiang etc. main coal base compose have a large amount of 8m with Upper super high seam.Use top coal caving method to there is the problems such as resource recovery is low, use separate zone production method to there is nature The shortcoming such as get angry, efficiency is low, use existing large cutting height workface technology and coal mining machinery equipment, be only capable of meeting the coal of exploitation about 7m Layer, still have the many coal of 1m cannot extraction, cause the huge wasting of resources.

Yanzhou Coal Industry Co., Ltd. applied for a kind of three flitting patents of invention (number of patent application: 200810116449.9), it is characterized in that using three Length discrepancy rocking arms, minor diameter cylinder that coal seam is divided into upper, middle and lower-ranking enters Row exploitation.Compared with double-ended shearer, under identical coal mining altitudes, the rocking arm size of three flittings shortens, rolling Cylinder diameter reduces, thus simplifies manufacturing process, enhances coal-winning machine and adapts to the motility of different mining height, reduces (reduction) and mine Machine installation general power, reaches energy-saving and cost-reducing purpose.But owing to three rocking arm length are different, feed technique of cutting sth. askew is multiple Miscellaneous, it is difficult to meet and produces ten-million-ton scale high working face height automatization, the requirement of intelligent mine per year.

The Jincheng City, Shanxi Province JinchengCoal IndustryGroup application patent of invention of a kind of superposition arm three cylinder high working face coal-winning machine (Application No. 201210033401.8), is characterized in that in double-ended shearer waist superposition one development machine formula cut Portion, adjusts its lifting and horizontal hunting by hydraulic cylinder and rotary table, completes the cut to superjacent.This invention has coal Layer changes adaptable advantage, but production practice is extremely complex, and development machine formula cutting form and coal-winning machine cut side The efficiency of formula is difficult to coupling, causes production efficiency low, is difficult to adapt to the exploitation of super high seam.

Tiandi science and technology Co., Ltd has applied for that one is applicable to 7～10m high seam three flitting and exploitations The patent of invention (number of patent application: 201410319059.7) of method, discloses a kind of three flittings and recovery method, will Work surface coal seam is divided into top, middle part, bottom three part, uses three flittings to exploit, and coal-winning machine both ends are passed through Long rocking arm connects coal seam, minor diameter cylinder main cut upper and lower, coal seam in the middle part of the short rocker arm| major diameter cylinder cut of middle part. This invention has bigger novelty, provides the most feasible a kind of recovery method for 7～10m high seams.But this invention is deposited Problem in the following aspects:

(1) three flittings of foregoing invention, to exploit the high seam of more than 8m, the rocking arm length at both ends is at least Needing about 6m, rocking arm is long causes that the stress of rocking arm is huge, poor stability, matching are poor, easily occur doing with set cap The problem such as relate to.Meanwhile, the long distance adding feed of cutting sth. askew of rocking arm, reduce production efficiency, and be a kind of pole to running part Big test.

(2) three flittings of foregoing invention, middle part is short rocker arm| major diameter cylinder, owing to range of accommodation is limited, two End rocking arm is long, causes middle part cylinder cannot cut at work surface frame head and tail, exists and stay coal phenomenon, make troubles to exploitation.

(3) waist increases short rocker arm| and major diameter cylinder, causes the heavy burden of fuselage to strengthen, stiffness of fuselage and reliably Property is difficult to meet the requirement that safety of coal mines efficiently produces.

(4) a large amount of coal cinders of middle part cylinder cut, it is impossible to load chute, it will be deposited on fuselage, coal-winning machine is caused Extruding, chute drift etc..

Therefore, the problem existed in conjunction with existing technology and the studies above, invention one can be applicable to once adopt entirely Three flittings of high more than 8m super high seam and cutting process thereof, fully exploit the coal resources of existing mine, improves ore deposit Well reserves recycled in its entirety rate, it is ensured that mine is given stable high yields irrespective of drought or water logging, extends mine service-life, it is achieved Sustainable Development of Enterprises.

Summary of the invention

In view of existing thick seam large mining height double-ended shearer can not meet the exploitation of more than 8m super high seam full-seam mining Present situation, in conjunction with layering, top coal caving principle and strata-pressure behavior, this utility model provides a kind of super high seam three Flitting, by the power of each cutting units of optimized distribution, utilizes three cylinders that rib is divided into upper, middle and lower-ranking simultaneously Carry out cut, thus disperse cut to load, reach to reduce coal-winning machine cutting power, reduce the purpose that single rocking arm cut loads. This three flitting can drag conveyor large-scale with down-hole, Hydraulic Support for Super Great Mining Height is mutually coordinated completes full-seam mining The falling of more than 8m super high seam work surface, fill, transport, prop up, control integration, automatization.Simultaneously, it is provided that it is special that one is applicable to more than 8m High seam full-seam mining cutting process.

This utility model adopts the following technical scheme that

A kind of super high seam three flitting, the tractive unit correspondence of coal-winning machine fuselage rear and front end connects front cutting units With rear cutting units, coal-winning machine fuselage is also associated with middle cutting units, be provided with in coal-winning machine fuselage electric-control system, hydraulic system and Spray cooling system, described middle cutting units is in face of work surface coal flow path direction layout, and intermediate calender rolls and centre including being connected shake Arm, the little frame above intermediate rockers and coal-winning machine rear haulage portion is hinged, and intermediate rockers is by the water arranged on coal-winning machine fuselage Heibei provincial opera height oil cylinder realizes lifting, and intermediate calender rolls uses non-helical bidirectional roller.

Described non-helical bidirectional roller is 4 tooth non-helical two-ways coal cutting pick-shaped cutter cylinder or 4 teeth non-helical twolip type cuts Tooth bidirectional rotation cylinder.Intermediate calender rolls main cut superjacent, is not involved in coalingging, and uses a line 4 tooth non-helical formula cylinder, real Existing two-ways coal cutting.

Described front cutting units is the most identical with the structure of rear cutting units and performance parameter, and the cutting motor power of rocking arm is not more than 1000kW, rocking arm length is less than 3.8m, and diameter of cylinder is not more than 3.5m；The length of described intermediate rockers is less than 3.7m, middle rolling A diameter of 2.5m～3m of cylinder, 0.3～0.5 times that cutting motor power is front cutting units cutting motor power of middle cutting units.

Described coal-winning machine back is additionally provided with fuselage preventer, including gear cash preventer, rotating fan protection dress Put and oil cylinder preventer.Described gear cash preventer is made up of protective plate, fuselage support, oil cylinder three part, protective plate and machine Body support is hinged, and fuselage support is connected with coal-winning machine fuselage, by the protective range of the flexible adjustment protective plate that oil cylinder comes, thus Effectively prevent wall caving and coal cinder from splashing.Described oil cylinder preventer is by fixing cover and mobile shield forms, and mobile shield can be along with Stretching of oil cylinder is slided on fixing cover, thus effectively cylinder piston rod is heightened in protection, is not acted on by external force, simultaneously will not be by Wall caving, coal cinder injure by a crashing object, damage.And it is provided with spacing guiding mechanism between fixing cover and mobile shield, it is possible to ensure the two Between coupling.Described rotating fan preventer is made up of base plate, fixed plate, sliding panel, is connected by swivel pin, along with in Between radial up-down, the real-time adjusting position of sliding panel, the wall caving produced during in order to protect intermediate calender rolls cut top coal.

Described coal-winning machine waist is provided with coal drop, for accepting the coal seam of transhipment intermediate calender rolls cut, makes middle rolling The superjacent of cylinder cut can load transporter from coal drop.

Described coal-winning machine drive end unit is provided with breaker, and breaker uses 8 pole motors+planetary gear speed reducing mechanism to drive, Under Same Efficieney, its output moment of torsion compared with prior art improves 2 times；Crushing shell is superior alloy steel cast structure, just Property is good, intensity is high；Broken pick uses double limitation structure, effectively prevents from getting rid of tooth, and safety is good.

A kind of super high seam cutting process, is to utilize three cylinders of coal-winning machine rib to be divided into upper, middle and lower-ranking simultaneously Carry out cut, the middle level coal of the front roll cut work surface of front cutting units, the intermediate calender rolls cut work surface of middle cutting units Day-coal, lower floor's coal of back roll cut work surface of rear cutting units and coaling；At work surface two ends, three flittings Realizing sweeping the end, clear float coal, feed technique of cutting sth. askew by front roll and back roll, now middle cutting units is adjusted to fuselage be water Level state, treat front roll and back roll by feed of cutting sth. askew completely into rib after, middle cutting units starts to heighten, and middle cuts The cylinder cutting portion progressively cuts superjacent, completes the feed of intermediate calender rolls, and enters routine along with front roll and back roll Coal cutting state, it is achieved the safety coal extraction of more than 8m super high seam.

Concrete coal mining cut step is as follows:

1) cut sth. askew feed in end

Coal-winning machine is positioned at the chain-drive section of coal-face, and now the front roll of coal-winning machine leans on working surface tail direction, mines Front roll, by the heading of work surface, is adjusted to coal seam in the middle part of the highest cut by the back roll of machine, and back roll is adjusted to minimum cut Underlying seam, intermediate calender rolls is adjusted to be the level of state with fuselage, and drag conveyor is adjusted to case of bending, and coal-winning machine is along bending Section walking, front roll, back roll are gradually cut rib, are treated that coal-winning machine passes through bending section, front roll and back roll and cuts coal completely After wall, middle cutting units starts to heighten, and intermediate calender rolls progressively cuts superjacent, simultaneously by scratch board conveyor straightening, thus complete Become the feed of cutting sth. askew of three flittings；

2) right lateral cuts Triangle Coal

Being adjusted to the highest by the back roll that coal-winning machine leans on chain-drive section, coal seam in the middle part of cut, the front roll by drive end unit is adjusted to Low, cut underlying seam, intermediate calender rolls maintains the original state, and then coal-winning machine right lateral cuts Triangle Coal, when running to end, gradually drops The back roll of low chain-drive section is until cutting Triangle Coal；

3) left lateral sweeps the end, clear float coal, the normal coal cutting of left lateral

Being adjusted to the highest as front roll using the cylinder that coal-winning machine leans on drive end unit, coal seam in the middle part of cut, by the cylinder of chain-drive section Being adjusted to that minimum intermediate calender rolls maintains the original state as back roll, cut underlying seam, then coal-winning machine left lateral sweeps the end, clear float coal, a left side The normal coal cutting of row；

During the normal coal cutting of left lateral, front roll is regained through second and third grade of wall supporting of out-of-date hydraulic support, and intermediate calender rolls passes through Time hydraulic support first order wall supporting regain；

4) coal-winning machine keeps the continuation left lateral coal cutting of above-mentioned attitude until tail, completes the cut in work surface middle part coal seam, Meanwhile, complete to move back and slip, move the operations such as frame；When running to end, it is gradually lowered the cylinder of drive end unit until cutting drive end unit Triangle Coal；

5) right lateral sweeps the end

To put on the coal-winning machine cylinder by chain-drive section, intermediate calender rolls is adjusted to be the level of state with fuselage, by the rolling of drive end unit Cylinder is adjusted to minimum, and right lateral sweeps the end；

6) coal-winning machine keeps the above-mentioned clear float coal of attitude left lateral until tail, then carries out cutting sth. askew feed from drive end unit, enters Subsequent cycle.

This utility model has the advantages that

1) super high seam three flitting is provided with three cutting units, by the power of each cutting units of optimized distribution, profit With three cylinders, rib is divided into upper, middle and lower-ranking and carries out cut simultaneously, thus disperse cut to load, reach to reduce coal-winning machine Cutting power, reduce single rocking arm cut load purpose, reduce coal-winning machine manufacture difficulty, improve coal mining simultaneously The reliability of machine.

2) this coal-winning machine is by the cooperating of three cylinders, it is possible to smoothly complete end cut sth. askew feed, sweep the end, the most floating Coal, cutting the techniques such as Triangle Coal, the exploitation for more than 8m super high seam provides a kind of feasible full-seam mining cutting process；Have It is beneficial to coal mining enterprise's rational exploitation and utilizes coal resources, improve the rate of extraction, it is achieved high-efficiency intensifying produces, and is coal mine large-mining high skill The important breakthrough again of art, especially a kind of greatly technological innovation of coal production.

3) structure and parameter of this forward and backward cutting units of three flittings is consistent, can exchange completely；Middle cutting units and Little frame is detachable, just becomes a high working face double-ended shearer, be adapted to the exploitation in below 8m coal seam, both protected after dismounting Hold the interchangeability that existing coal-winning machine is good, possess again good adaptability.

4) in the middle of, cutting units is by research and development lightweight rocking arm, non-helical two-way knife shape cutter teeth cylinder, can realize top coal The orderly stripping of layer, can realize again the two-ways coal cutting of intermediate calender rolls；And intermediate calender rolls is when being adjusted to be the level of state with fuselage, can To carry out broken coarse coal and wall caving as disintegrating machine, it is ensured that coal stream passes through smoothly.

5) coal-winning machine back be provided with gear cash preventer, it is possible to effectively prevent middle sweeping top cylinder coal breakage and Coal wall caving is hurted sb.'s feelings, the most effectively protection machine body not coal breakage, and protects fluid pressure line, cable and other element etc., greatly Width improves the safety of three flittings.

Accompanying drawing explanation

Fig. 1 is structural front view of the present utility model；

Fig. 2 is structure top view of the present utility model；

Fig. 3 is structure rearview of the present utility model；

Fig. 4 is the structural representation of non-helical two-ways coal cutting pick-shaped cutter cylinder；

Fig. 5 is the structural representation of non-helical bidirectional rotation knife shape cutter teeth cylinder；

Fig. 6 is the structural representation of gear cash preventer；

Fig. 7 is the structural representation heightening oil cylinder preventer；

Fig. 8 is the structural representation of rotating fan preventer；

Fig. 9 is the structural representation of fuselage coal drop；

Figure 10 is the structural representation of breaker；

Figure 11 is the cut schematic diagram cut sth. askew and enter coal body；

Figure 12 is the schematic diagram that coal-winning machine returns to cut head lane；

Figure 13 is the normal coal cutting of coal-winning machine left lateral to the schematic diagram in tail lane；

Figure 14 is the cut schematic diagram that coal-winning machine right lateral sweeps the end；

In figure: cutting units after cutting units, 3-in the middle of cutting units before 1-, 2-, 4-level heighten oil cylinder, 21-intermediate calender rolls, 22-intermediate rockers.

Detailed description of the invention

In conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:

This utility model is in existing high seam full-seam mining double-ended shearer technical foundation, utilizes layering, puts Top coal mining principle and strata-pressure behavior, (comprise centre to shake by being additionally arranged middle cutting units at coal-winning machine waist Arm and intermediate calender rolls), invent super high seam three flitting, the middle level coal of its front roll main cut work surface (is Gap), the day-coal of intermediate calender rolls cut work surface (be also and sweep top coal), lower floor's coal of back roll cut work surface and Coaling, define coal mine fully-mechanized mining working three cylinder exploitation new technology, it is achieved super high seam above to full-seam mining 8m is opened Adopt.

As shown in Figure 1, 2, 3, three flittings distinct feature is that most and are provided with three cutting units, cut before being respectively Portion, middle cutting units and rear cutting units, the most forward and backward cutting units is hinged with the tractive unit engaging lug at fuselage two ends, and employing is put Formula heightens oil cylinder to realize the regulation of forward and backward roller height.Little frame engaging lug hinge above middle cutting units and right tractive unit Connecing (arranging in face of work surface coal flow path direction), little frame uses 4 ladder pins to be connected fastening, by setting on fuselage with tractive unit The level of putting heightens oil cylinder to realize the lifting of intermediate rockers.Fuselage is made up of left and right tractive unit, intermediate stand, passes through dovetail groove Drift positions, and long draw hydraulic nut connects fastening；Electric-control system, hydraulic system, spray cooling system are totally placed in fuselage Internal.Breaker is hinged on tractive unit on the left of fuselage and connects ear, for the broken coarse coal by fuselage.Back sets Be equipped with rotary safe type gangue stopping device, on put oil cylinder preventer and gear cash end protection etc., mainly prevent middle sweeping top Coal breakage and the coal wall caving of cylinder are hurted sb.'s feelings, simultaneously effectively protection machine body not coal breakage, and protect fluid pressure line, cable and Other element etc..

According to strata-pressure behavior, the forward and backward cutting units of Proper Match, the performance parameter of middle cutting units.The most forward and backward cut The power of motor in portion, rocking arm length, diameter of cylinder and other performance parameter are identical, and the cutting motor power of single rocking arm is little In 1000kW, rocking arm length is less than 3.8m, and diameter of cylinder is not more than 3.5m.Middle cutting units is by research and development lightweight rocking arm, non- Spiral two-way knife shape cutter teeth cylinder, thus realize the two-ways coal cutting of intermediate calender rolls.Its cutting motor power is about forward and backward cutting units 0.3～0.5 times of power of motor, rocking arm length is less than 3.7m, and diameter of cylinder is in 2.5m～3m scope.

Middle cutting units is reserved with enough gaps when maximum mining height with hydraulic support top beam, it is ensured that with hydraulic support top Beam, mutual side do not interfere；When minimum mining height, it is possible to adjust to being parastate with fuselage, it is ensured that the property passed through of unit.

This three flitting can scratch board conveyor large-scale with underground coal mine, high working face hydraulic support is mutually coordinated completes The falling of full-seam mining 8m above super high seam work surface, fill, transport, prop up, control integration, automatization, intellectuality.

The cutting process of three flittings is three flittings, large-scale scratch board conveyor, super great mining height hydraulic pressure to be propped up Frame carries out supporting, utilizes three cylinders of coal-winning machine that rib is divided into upper, middle and lower-ranking and carries out cut simultaneously, and front roll is main The middle level coal of cut work surface, the day-coal (be also and sweep top coal) of intermediate calender rolls cut work surface, back roll cut work surface Lower floor's coal and coaling.In work surface two ends, three flittings realize sweeping the end, clear float coal, tiltedly by forward and backward cylinder The techniques such as cutting-in tool, now middle cutting units is adjusted to be the level of state with fuselage, treats that forward and backward cylinder is entered completely by feed of cutting sth. askew After entering rib, middle cutting units starts to heighten, and intermediate calender rolls progressively cuts superjacent, completes the feed of intermediate calender rolls, and Conventional coal cutting state is entered, it is achieved the safety coal extraction of more than 8m super high seam along with left and right cylinder.Specifically comprise the following steps that

1) cut sth. askew feed (Figure 11) in end

This three flitting is positioned at the chain-drive section (right side is chain-drive section) of work surface, now by tail direction for front rolling Cylinder, by heading for back roll, be positioned in the middle part of coal-winning machine for intermediate calender rolls, front roll is adjusted to the highest, in the middle part of cut Coal seam, back roll is adjusted to minimum cut underlying seam, and intermediate calender rolls is adjusted to be the level of state with fuselage, and drag conveyor is adjusted to Case of bending.Coal-winning machine is walked along bending section, and forward and backward cylinder is gradually cut rib, treated that coal-winning machine passes through bending section, forward and backward After cylinder cuts rib completely, middle cutting units starts to heighten, and intermediate calender rolls progressively cuts superjacent, is transported by scraper plate simultaneously Machine straightening, thus complete the feed of cutting sth. askew of three flittings.

2) right lateral cuts Triangle Coal (Figure 12)

Being adjusted to the highest by the cylinder that coal-winning machine leans on chain-drive section, coal seam in the middle part of cut, the cylinder by drive end unit is adjusted to minimum, cuts Cutting underlying seam, intermediate calender rolls maintains the original state, and then coal-winning machine right lateral cuts Triangle Coal, when running to end, is gradually lowered machine The cylinder of head is until cutting Triangle Coal.

3) left lateral sweeps the end, clear float coal, the normal coal cutting of left lateral (Figure 13)

Being adjusted to the highest as front roll using the cylinder that coal-winning machine leans on drive end unit, coal seam in the middle part of cut, by the cylinder of chain-drive section Being adjusted to that minimum intermediate calender rolls maintains the original state as back roll, cut underlying seam, then to sweep the end, clear float coal left for coal-winning machine left lateral The normal coal cutting of row；During the normal coal cutting of left lateral, front roll is regained through second and third grade of wall supporting of out-of-date hydraulic support, intermediate calender rolls First order wall supporting withdrawal through out-of-date hydraulic support.

4) coal-winning machine keeps the continuation left lateral coal cutting of above-mentioned attitude until tail, completes the cut in work surface middle part coal seam, Meanwhile, complete to move back and slip, move the operations such as frame；When running to end, it is gradually lowered the cylinder of drive end unit until cutting drive end unit Triangle Coal.

5) right lateral sweeps at the end (Figure 14)

To put on the coal-winning machine cylinder by chain-drive section, intermediate calender rolls is adjusted to be the level of state with fuselage, by the rolling of drive end unit Cylinder is adjusted to minimum, and right lateral sweeps the end.

6) coal-winning machine keeps the above-mentioned clear float coal of attitude left lateral until tail, then carries out cutting sth. askew feed from drive end unit, enters Subsequent cycle.

It follows that class coal-winning machine described in patent 201410319059.7 compared by three flittings described in the utility model Have and significantly distinguish improvement:

First, version, cylinder arrangement, parameter, performance difference.Three flittings described in the utility model set Three cutting units (including rocking arm and cylinder respectively) before, during and after being equipped with, the power of motor of the most forward and backward cutting units, rocking arm are long Degree, diameter of cylinder and other performance parameter are identical, are used interchangeably, and the cutting motor power of single rocking arm is not more than 1000kW, rocking arm length is less than 3.8m, and diameter of cylinder is not more than 3.5m.Middle cutting units is by research and development lightweight rocking arm, non-spiral shell Rotation two-ways coal cutting pick-shaped cutter cylinder or non-helical bidirectional rotation knife shape cutter teeth cylinder, its cutting motor power is about forward and backward section Cut portion's power of motor 0.3～0.5 times, rocking arm length is less than 3.7m, and diameter of cylinder is on 2.5m～3m scope, intermediate rockers and the right side Little frame above towing tank is hinged, and little frame and towing tank use+5 alignment pins of T-slot to connect fastening.I.e. this utility model The forward and backward rocking arm of described coal-winning machine uses the mature technology of existing 7m mining-height coal mining machine rocking arm, and has passed through underground coal mine Practice test, has good reliability and practicality, and middle cutting units have developed new technique, has higher novelty, The new technique combination superposition of existing mature technology and research and development, it is achieved that the full-seam mining exploitation of more than 8m super high seam, has Novelty greatly.

And the fixed form of the middle part rocking arm described in patent 201410319059.7 and fuselage does not illustrate, from schematic diagram Seeing on figure, its connected mode is the most unreliable, bigger to stiffness of fuselage and intensity effect.Forward and backward rocking arm is lengthened rocker arm, and length is big About 6m, rocking arm lengthens, the rigidity of rocking arm and strength reduction, poor stability, and the driving-chain of rocker arm transmission system lengthens, transmission Efficiency reduces；Its middle cutting units is major diameter cylinder, and weight is big, the support stiffness of fuselage it is difficult to ensure that.And rocking arm lengthens, Coal-winning machine whole length lengthens, its down-hole poor by property, crank.

Secondly, point mining coal seam layout of three cylinders is different.The front roll of coal-winning machine described in the utility model, middle rolling Cylinder, the cut coal seam that back roll is corresponding are middle level coal, day-coal, lower floor's coal and coaling, and patent 201410319059.7 institute Stating the minor diameter cylinder at coal-winning machine two ends for coal seam, cut upper and lower, middle part major diameter cylinder is coal in the middle part of cut Layer.

The feed technique of cutting sth. askew of three flittings the most described in the utility model is cut sth. askew feed for front and back cylinder, intermediate calender rolls Being not involved in feed of cutting sth. askew, after treating that before and after's cylinder is completely into rib, intermediate calender rolls rises incision rib, adopts with conventional two cylinders Coal machine feed technique of cutting sth. askew is essentially identical, remains original coal winning technology, and head, tail is very good by property, Triangle Coal can be cut smoothly, with down-hole relevant device (hydraulic support, scratch board conveyor), there is good matching.And patent Coal-winning machine described in 201410319059.7 is to use the feed simultaneously of three cylinders, changes existing coal winning technology, and cut sth. askew into Cutter process is complicated, and front and back rocking arm is long, once meets to face upward and adopts operating mode, and front and back rocking arm is easy for interfering with set cap, and And complete machine is long, middle part rocking arm length is short, and swing limited extent, causes middle part cylinder can stay at work surface head, tail Next part coal seam, it is impossible to cut.

Meanwhile, coal seam in the middle of the front roll cut of coal-winning machine described in the utility model, be equivalent to coal seam has been opened breach, in Between cylinder sweep top coal, back roll cuts underseam and coalingging, and front roll is by after the gap of coal seam, and top seam is unsettled, releases Put the pressure of top seam, significantly reduce the coal cutting load of middle sweeping top cylinder.And described in patent 201410319059.7 The front roll of coal-winning machine cuts top coal, and intermediate calender rolls cuts middle coal, and back roll cuts underseam and coalings, and front and back diameter of cylinder is little, Rocking arm is long, crank, easily interferes with hydraulic support, and back roll is minor diameter cylinder, and ability of coalingging is weak, nothing Method meets the requirement of coalingging in more than 8m coal seam.

The component not making specified otherwise in this utility model is prior art.

Claims (6)

1. super high seam three flitting, the tractive unit correspondence of coal-winning machine fuselage rear and front end connects front cutting units And rear cutting units (3) (1), coal-winning machine fuselage is also associated with middle cutting units (2), be provided with in coal-winning machine fuselage electric-control system, Hydraulic system and spray cooling system, it is characterised in that: described middle cutting units (2) is arranged in face of work surface coal flow path direction, bag Include the little frame hinge above connected intermediate calender rolls (21) and intermediate rockers (22), intermediate rockers (22) and coal-winning machine rear haulage portion Connecing, intermediate rockers (22) is heightened oil cylinder (4) by the level arranged on coal-winning machine fuselage and is realized lifting, and intermediate calender rolls (21) uses Non-helical bidirectional roller.

Super high seam three flitting the most according to claim 1, it is characterised in that: described non-helical bidirectional roller is 4 tooth non-helical two-ways coal cutting pick-shaped cutter cylinder or 4 teeth non-helical twolip type pick bidirectional rotation cylinder.

Super high seam three flitting the most according to claim 2, it is characterised in that: described front cutting units (1) and after Structure and the performance parameter of cutting units (3) are the most identical, and the cutting motor power of rocking arm is not more than 1000kW, and rocking arm length is less than 3.8m, diameter of cylinder is not more than 3.5m；The length of described intermediate rockers (22) is less than 3.7m, intermediate calender rolls (21) a diameter of 2.5m ～3m, 0.3～0.5 times that cutting motor power is front cutting units (1) cutting motor power of middle cutting units (2).

Super high seam three flitting the most according to claim 3, it is characterised in that: described coal-winning machine back is also It is provided with fuselage preventer, including gear cash preventer, rotating fan preventer and oil cylinder preventer；Described gear cash protects Device is connected formed by protective plate, fuselage support, oil cylinder three part, and protective plate is hinged with fuselage support, fuselage support and coal mining Machine fuselage connects；Described oil cylinder preventer is by fixing cover and mobile shield forms, and mobile shield heightens oil cylinder (4) along with level Stretch and slide on fixing cover, and be provided with spacing guiding mechanism between fixing cover and mobile shield；Described rotating fan is prevented Protection unit by base plate, fixed plate, sliding panel is hinged forms, sliding panel lifts along with intermediate rockers (22).

Super high seam three flitting the most according to claim 4, it is characterised in that: described coal-winning machine waist sets There is coal drop, be used for accepting the coal seam of transhipment intermediate calender rolls (21) cut.

Super high seam three flitting the most according to claim 5, it is characterised in that: described coal-winning machine drive end unit is provided with Breaker, breaker uses 8 pole motors+planetary gear speed reducing mechanism to drive, and the broken pick in breaker uses dual limit Bit architecture.