CN108343434A

CN108343434A - Coalcutter

Info

Publication number: CN108343434A
Application number: CN201810171985.2A
Authority: CN
Inventors: 王昊; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-01
Filing date: 2018-03-01
Publication date: 2018-07-31

Abstract

The invention discloses a kind of coalcutters, the walking basal seat (6.3) of protective plate (6.1) and bottom including top, organism (6.2) is installed on pedestal (6.3), protective plate (6.1) is supported by the support device (6.4) being located on pedestal (6.3), support device (6.4), it is provided with driving motor in body (6.2), controller and communication device, body (6.2) is connected by cutting arm (6.5) with roller (6.7), pick is installed on roller (6.7), roller (6.7) is installed on by shaft (6.6) on cutting arm (6.5), water main (6.8) is passed through with main air inlet pipe (6.9) above protective plate (6.1) to roller (6.7)；The top of protective plate (6.1) has the cover board (6.11) stretched out, the accommodation space for accommodating detection device (6.10) is formd between cover board (6.11) and water main (6.8), water main (6.8) is close at the back of detection device (6.10).Protection effect of the present invention is good, can effectively inhibit pollution caused by coal dust.

Description

Coalcutter

Technical field

The invention belongs to coal field, more particularly to a kind of coalcutter.

Background technology

Important component of the coalcutter as fully-mechanized mining working complete set of equipments, the production to mine, and can capture It is highly efficient and productive to have an important influence on, more it is to ensure that the important link of fully-mechanized mining working equipment safety reliable and economic operation.Existing skill Coalcutter in art generally comprises body and cutting arm, and various sensors are installed on control device on body, in coalcutter Ventilation duct or spray tube is arranged in side, and at fully mechanized mining work surface, coal dust is larger, and fallen coal dust is often by sensor Covering causes detection failure, simultaneously as body lacks protection, the coal cinder that coalcutter top is fallen down to body cause compared with Large impact causes the damage of coalcutter, since main ventilation pipe is separated from each other with water main and coalcutter, main ventilation pipe and water main Usually by being manually laid with, promoted with the propulsion of coalcutter, on the one hand increase workload in this way, another aspect main ventilation pipe with The fltting speed of water main usually lags behind coalcutter, causes to divulge information at fully mechanized mining work surface, sprays unsmooth, pollution caused by coal dust is serious.

Invention content

In view of the drawbacks of the prior art, the present invention provides a kind of coalcutters.

A kind of coalcutter includes the walking basal seat 6.3 of the protective plate 6.1 at top and bottom, organism is installed on pedestal 6.3 6.2, protective plate 6.1 is supported by the support device 6.4 on pedestal 6.3, and support device 6.4 is provided with drive in body 6.2 Dynamic motor, controller and communication device, body 6.2 are connected by cutting arm 6.5 with roller 6.7, are equipped with and are cut on roller 6.7 Tooth, roller 6.7 are installed on by shaft 6.6 on cutting arm 6.5, water main 6.8 and main air inlet pipe 6.9 pass through protective plate 6.1 to 6.7 top of roller；The top of protective plate 6.1 has the cover board 6.11 stretched out, is formd between cover board 6.11 and water main 6.8 The accommodation space of detection device 6.10 is accommodated, water main 6.8 is close at the back of detection device 6.10.

Optionally, main air inlet pipe 6.9 is located at the lower section of water main 6.8, and main air inlet pipe 6.9 and the end of water main 6.8 are equal It stretches out in except protective plate 6.1, the end of main air inlet pipe 6.9 and water main 6.8 extends substantially to the top of roller 6.7, main water The water mist that pipe 6.8 is sprayed is shrouded on roller 6.7；The end of main air inlet pipe 6.9 is provided with multiple nozzles 6.12, nozzle 6.12 Open Side Down, and the fresh air entered from main air inlet pipe 6.9 is sprayed downwards by nozzle 6.12, and nozzle 6.12 is located at the upper of roller 6.7 Side；In main air inlet pipe 6.9 the first anion generator 6.13 is provided at nozzle 6.12；The support device 6.4 is wrapped Include left support arm, right support arm, left hydraulic prop and right hydraulic prop；Left support arm and the bottom of right support arm pass through lower bearing pin Hinged, left hydraulic prop is supported in the outside of left support arm, and right hydraulic prop is supported in the outside of right support arm, left branch Brace and right support arm are V-shaped.

The beneficial effects of the invention are as follows：By the way that support device and protective plate is arranged so that coalcutter ontology is effectively prevented Shield, support device are not susceptible to topple over, and stability is good, and structural strength is big, is unlikely to deform, and compressive resistance is strong, it is therefore prevented that the coal fallen Impact of the block to coalcutter；Main ventilation pipe and water main are set on top protection plate, and main ventilation pipe and water main can be with The driving of coalcutter and promote, ensure that at fully mechanized mining work surface ventilation and supply water；Main ventilation pipe and water main be opened on roller it On, it is spraying under air-blowing double action, can effectively inhibit pollution caused by coal dust, improve fully mechanized coal face operating environment；By sensing device It is placed in the accommodating chamber of front end front end of protective plate, is on the one hand conducive to detection of the sensor (such as ultrasound) to coal seam, it is another Aspect can prevent covering of the coal dust to sensor, while water main is cleverly utilized and cools down for detection device, it is not necessary to be again it Additional cooling system is set.

Description of the drawings

Fig. 1 is coal mining system overall structure diagram；

Fig. 2A is the structural schematic diagram of coalcutter；

Fig. 2 B are the portions A enlarged drawings in Fig. 2A；

Fig. 3 A are the structural schematic diagrams of tunnel support device；

Fig. 3 B are the construction drawings of tunnel support device；

Fig. 4 is the structural schematic diagram of firedamp taking-out discharging drilling；

Fig. 5 is the layout drawing of dust-extraction unit；

Fig. 6 is the structural schematic diagram of dust-extraction unit；

Fig. 7 is explosion protection system schematic diagram；

Fig. 8 A are the first schematic diagrames of rotating shaft sealing structure；

Fig. 8 B are the second schematic diagrames of rotating shaft sealing structure；

Fig. 8 C are the third schematic diagrames of rotating shaft sealing structure.

Specific implementation mode

In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention Specific implementation mode be described in detail, make that the above and other purpose of the present invention, feature and advantage will be more clear.Complete Identical reference numeral indicates identical part in portion's attached drawing.Not deliberately attached drawing drawn to scale, it is preferred that emphasis is show this hair Bright purport.

Fig. 1 is combined first, and whole introduction is done to the coal mining system of the present invention.Coal mining is carried out in tunnel 2, and tunnel 2 is prolonged Fully mechanized mining work surface is extended to, coalcutter 6 is located at fully mechanized mining work surface, fully mechanized mining operation is realized by coalcutter, at fully mechanized mining work surface It is additionally provided with dust-extraction unit 8 and belt conveyor 7.Tunnel 2 is supported by multiple support devices 5, and support device 5 is along tunnel length Direction arranges, and support device 5 is supported between the top 1 in tunnel 2 and bottom 4, by 5 roof supporting of support device and bottom plate, thus Prevent tunnel from caving in.Be additionally provided with more roof and floor deformation measuring devices 3 in tunnel 2, for example, along tunnel length direction every A piece roof and floor deformation measuring device 3 of 100 meters of settings, top plate or bottom plate can be measured by roof and floor deformation measuring device 3 Deflection, when deflection is greater than the set value, prompts the measuring device nearby to have so as to be measured to roadway deformation amount The possibility of landslide, needs maintenance personnel to handle in time, and firedamp taking-out discharging drilling 9 is dug in the fissure zone on tunnel 2.

Coalcutter 6 is located at fully mechanized mining work surface, is main coal-cutting machinery.As shown in Figure 2 A, coalcutter 6 includes top The walking basal seat 6.3 of protective plate 6.1 and bottom installs organism 6.2 on pedestal 6.3, and protective plate 6.1 is by being located on pedestal 6.3 Support device 6.4 support, support device 6.4 and 5 structure having the same of support device differ only in support device 6.4 It is installed on pedestal 6.3 and is used to support protective plate 6.1, and support device 5 is installed in tunnel 2, is used to support top plate 5.1, it is right It will be further described in detail in following support devices 5 in the structure of support device 6.4.Drive is provided in body 6.2 The front end of dynamic motor, central processing unit, communication device etc., body 6.2 is equipped with preceding inertial navigation 6.15, and rear end is equipped with rear inertial navigation 6.14, Velocity sensor 6.16 is installed on pedestal 6.3.Body 6.2 is connected by cutting arm 6.5 with roller 6.7, is pacified on roller 6.7 Equipped with pick, roller 6.7 is installed on by shaft 6.6 on cutting arm 6.5.Water main 6.8 passes through protective plate with main air inlet pipe 6.9 6.1 to the top of roller 6.7.

Preceding inertial navigation 6.15, rear inertial navigation 6.14 and velocity sensor 6.16 be connected with central processing unit, central processing unit According to preceding inertial navigation 6.15, the detected value of rear inertial navigation 6.14 and velocity sensor 6.16, complete coalcutter attitude algorithm.Due to The relative distance of former and later two inertial navigations is fixed value, therefore, can improve double inertial navigation positioning accuracies in this, as constraints.

S10：Its position coordinates is input to central processing unit by preceding inertial navigation 6.15 and rear inertial navigation 6.14, central processing unit according to Dead reckoning calculates the position coordinates of forward and backward inertial navigation；

Wherein subscript k-1, k indicates k-1 moment and k moment respectively；N, E, U are respectively inertial navigation north, east, day direction position seat Mark；V is the velocity amplitude that velocity sensor 6.16 exports；T is the sampling period:θ is respectively course angle and the pitching of inertial navigation output Angle.

S20：According to dead reckoning, positioning equation can be abbreviated as：

Wherein, quantity of state X=[N1 El U1 N2 E2 U2]^T, N1 El U1 are respectively preceding 6.15 north of inertial navigation, east, old name for the Arabian countries in the Middle East To position coordinates, N2, E2, U2 are respectively rear 6.14 north of inertial navigation, east, day direction position coordinates；W is state-noise；It is positioned with this State equation of the equation as extended Kalman filter.

S30：Relative distance derives extended Kalman filter amount as the constraints of fixed value after being installed using two inertial navigations Survey equation；Note fixed value is r, meets following relational expression:

Above formula can be abbreviated as Z_k=h (X_k)+V_k, the wherein subscript k expression k moment；Measurement Z=[r]；V is to measure noise； Using this equation as the measurement equation of extended Kalman filter.

S40：Extended Kalman filter output is the position coordinates in 6.14 north of preceding inertial navigation 6.15 and rear inertial navigation, east, day, will Positioning result of the position coordinates of preceding inertial navigation 6.15 as coalcutter.

The more inertial navigation localization methods of coalcutter provided by the invention are pacified using 6.14 two inertial navigations of preceding inertial navigation 6.15 and rear inertial navigation Relative distance is the constraints of fixed value after dress, calibrates high-cost preceding inertial navigation 6.15 with the rear inertial navigation 6.14 of low cost, reaches To high accuracy positioning, it is made to meet requirement of the underground coal mine for coalcutter positioning accuracy, to realize that fully-mechanized mining working is intelligent It lays a good foundation.

Refering to Fig. 2 B, the top of protective plate 6.1 is provided with detection device 6.10, detection device 6.10 for example may include Methane Concentration Measurement device, oxygen concentration detector, temperature sensor, gas concentration lwevel detector etc..The top of protective plate 6.1 Cover board 6.11 with stretching forms the accommodation space for accommodating detection device 6.10 between cover board 6.11 and water main 6.8, Water main 6.8 is close at the back of detection device 6.10, in this way can utilize water main 6.8 be detection device cooling, it is not necessary to again for Additional cooling system is arranged in it, and cover board 6.11 plays protective action to detection device, can prevent the ickings fallen damage inspection Survey device.Main air inlet pipe 6.9 is located at the lower section of water main 6.8, and the end of main air inlet pipe 6.9 and water main 6.8 stretches out in anti- Except backplate 6.1, the end of main air inlet pipe 6.9 and water main 6.8 extends substantially to the top of roller 6.7.Water main 6.8 is sprayed The water mist gone out is shrouded on roller 6.7, to reduce the coal dust of fully mechanized mining work surface.The end of main air inlet pipe 6.9 is provided with more A nozzle 6.12, Open Side Down for nozzle 6.12, and the fresh air entered from main air inlet pipe 6.9 is sprayed downwards by nozzle 6.12, due to Nozzle 6.12 is located substantially at the top of roller 6.7 in this way, can blow coal dust caused by roller 6.7 downwards, can be into one The pollution caused by coal dust of step inhibited at fully mechanized mining work surface.Further, the is provided at nozzle 6.12 in main air inlet pipe 6.9 One anion generator 6.13, by the first anion generator 6.13 so that containing a large amount of anion, anion in fresh air It is blown into fully mechanized mining work surface through nozzle 6.12.Due to containing a large amount of anions in fresh air, at such fully mechanized mining work surface in equipment Electrostatic can be neutralized by anion, and so as to greatly reduce the generation of electrostatic at fully mechanized mining work surface, reduction is caused by electrostatic Fire or explosion accident.

By the way that support device and protective plate is arranged so that coalcutter ontology obtains effective protection, and support device is not susceptible to Topple over, stability is good, and structural strength is big, is unlikely to deform, and compressive resistance is strong, it is therefore prevented that impact of the coal cinder fallen to coalcutter；It is main Ventilation duct is set to water main on top protection plate, and main ventilation pipe can be promoted with water main with the driving of coalcutter, It ensure that ventilation at fully mechanized mining work surface and supply water；Main ventilation pipe is opened on water main on roller, dual with air-blowing spraying It under effect, can effectively inhibit pollution caused by coal dust, improve fully mechanized coal face operating environment；Sensing device is placed in the front end front end of protective plate Accommodating chamber in, be on the one hand conducive to detection of the sensor (such as ultrasound) to coal seam, on the other hand, coal dust can be prevented to sensing The covering of device, while water main is cleverly utilized and cools down for detection device, it is not necessary to additional cooling system is set for it again.

Fig. 3 A are the structural schematic diagram of support device 5 of the present invention.Support device 5 includes left support arm 5.2, the right side Support arm 5.7, left hydraulic prop 5.3 and right hydraulic prop 5.5.Left support arm 5.2 and the bottom of right support arm 5.7 pass through lower pin Axis 5.4 is hinged, and left hydraulic prop 5.3 is supported in the outside of left support arm 5.2, and right hydraulic prop 5.5 is supported in right branch The outside of brace 5.7, left support arm 5.2 and right support arm 5.7 are V-shaped, and top plate 5.1 is laid on left support arm 5.2 and right support arm On 5.7.Multigroup support device 5 is arranged along tunnel length direction, and hole is provided on the top of left support arm 5.2 and right support arm 5.7, Upper pin 5.6 passes through the hole, and two groups of support devices 5 are connected together so that each group support device becomes an entirety.

As shown in Figure 3B, can multiple rows of support device 5 be set according to the width in tunnel in tunnel, is arranged in figure 3b Two rows of support devices 5, each spacing arranged between support device 5 and each row between the side wall of tunnel at a distance from it is roughly equal, in Fig. 3 B In illustrated embodiment, the distance of left bank support device 5 to left side wall 5.8 is about 1.5 meters, right row's support device 5 to right side wall 5.9 distance is about 1.5 meters, and the spacing of left bank support device and right row's support device is also 1.5 meters.Further, on a left side Being dug on side wall 5.8 has inside left groove 5.10, and inside right groove 5.11 is offered on right side wall 5.9, top plate 5.1 Left groove 5.10 is inserted into right groove 5.11 in left and right both ends respectively, is realized to top by left groove 5.10 and right groove 5.11 Additional hydraulic vertical prop may not necessarily be arranged in the left and right both ends of the support at 5.1 left and right both ends of plate, such top plate 5.1 again, significantly Reduce the usage amount of column.

The work progress of support device 5 shown in Fig. 3 A, 3B is introduced below.In 2 digging process of tunnel, respectively on a left side Left groove 5.10 and right groove 5.11 are cut on side wall 5.8 and right side wall 5.9, top plate 5.1 is inserted into left groove 5.10 and the right side In groove 5.11, the left support arm 5.2 of one group of support device 5 and right support arm 5.7 are launched into V-shaped later, adjusted separately Left hydraulic prop 5.3 and right hydraulic prop 5.5 so that left support arm 5.2 pushes against top plate 5.1 with right support arm 5.7, later will be upper Axis pin 5.6 passes through the hole on this group of 5 left support arm 5.2 of support device or right support arm 5.7, and connects with upper one group of support device 5 It picks up and, after which is provided with, next row support device 5 can be installed with identical method.In the present invention, Left support arm 5.2, right support arm 5.7 and the top plate 5.1 of support device 5 constitute a stable triangle, left support arm 5.2, one firm triangle of left hydraulic prop 5.3 and bottom plate (or pedestal) composition, equally, right hydraulic prop 5.5, right support Arm 5.7 and bottom plate (or pedestal) also form a firm triangle, while by upper pin 5.6 so that each group support device 5 An entirety is connected into, support device 5 is not susceptible to topple over, and stability is good, relative to single column supporting structural, support device 5 structural strength greatly reinforces, and is unlikely to deform, and compressive resistance is strong；In work progress, support device 5 is uniformly divided along top plate 5.1 Cloth strengthens the support to 5.1 intermediate position of top plate, top plate 5.1 can be effectively prevent to fracture from centre, it is ingenious excavated it is left recessed Slot 5.10 and right groove 5.11, may not necessarily be arranged additional side hydraulic vertical prop, greatly reduce the use of column again in this way Amount.

In the present invention, as shown in figure 4, carrying out gas pumping using the method for firedamp taking-out discharging drilling 9 is dug in fissure zone It puts.Drilling 9 includes the first inclined drill 9.1 extended obliquely from ground, the horizontal horizontal drilling dug in fissure zone 9.6 9.2, and extend downward by fissure zone 9.6 second inclined borehole 9.4 of fully mechanized mining work surface, it is the first inclined drill 9.1, horizontal Drilling 9.2 and the second inclined borehole 9.4 are sequentially connected, and wind turbine 9.5 is equipped in the end of the second inclined borehole 9.4, tiltedly second Non-return valve 9.3 is set in drilling 9.4.In working face mining process, poured on the methane gas in target coal seam into horizontal brill In hole 9.2, due to the presence of non-return valve 9.3, the methane gas in horizontal drilling 9.2 will not enter fully mechanized mining work surface, in wind turbine Under the action of 9.5, the methane gas in horizontal drilling 9.2 is discharged from the first inclined drill 9.1.

In work progress, implement 9.1 well of the first inclined drill on ground first, which creeps into fissure zone 9.6, It is used in combination well cementing of cement, cementing concrete to return to ground；First inclined drill, 9.1 well horizontal drilling is docked with opposite bore completion, into Row horizontal drilling completes horizontal drilling 9.2, about to stopping at fully mechanized mining work surface；From the fully mechanized mining work surface in tunnel 2 obliquely The drilling for carrying out the second inclined borehole 9.4, until being got through with horizontal drilling 9.2；Wind turbine 9.5 and non-return valve 9.3 are installed. Entire the first inclined drill of work progress 9.1 is completed with horizontal drilling 9.2 by surface drilling equipment, and the second inclined borehole 9.4 is from well It spuds in lower tunnel, this form of construction work can be carried out at the same time with underground on well, short time limit, simultaneously as the second inclined borehole 9.4 It need not spud in from ground, drilling direction need not be varied multiple times in surface drilling equipment (drill bit), greatly reduce difficulty of construction；It is adopting In coal operation, horizontal drilling 9.2 and the second inclined borehole 9.4 can together promote, operating efficiency with the propulsion of fully mechanized mining work surface It is high；Since underworkings 2 and the vertical range of fissure zone 9.6 are shorter, the length of such second inclined borehole 9.4 can subtract significantly It is few, it is at low cost.

As shown in Figure 1,5, dust-extraction unit 8 is located at the front of coalcutter 6, and dust-extraction unit 8 is for taking away at coal mining activity face Coal dust, gas, waste and old air etc..Dust-extraction unit 8 is placed on the bottom 4 in tunnel 2, can place more dust-extraction units 8, figure It placed two dust-extraction units 8 in 5, belt conveyor 7 is located between two dust-extraction units 8, and belt conveyor 7 is located substantially at roller 6.7 lower section, belt conveyor 7 can fall into belt conveyor 7 by the coal under 6.7 cuttings of roller in this way by 7.1 support of carrying roller On, it is transported by belt conveyor 7.Spacing between dust-extraction unit 8 and belt conveyor 7 is about 50cm-150cm, refering to Fig. 6, is removed The advantages of opening 8.1 of dirt device 8 is located at the side-lower of belt conveyor 7, this arrangement is, defeated during coal mining Send the dust at belt 7 and roller 6.7 maximum, it, on the one hand can be with by 8.1 side-lowers for being set to belt conveyor 7 that will be open The coal under cutting is avoided to fall into opening 8.1, on the other hand, since opening 8.1 is located at the lower section of belt conveyor 7 close to skin Band, the coal dust on belt conveyor 7 can be taken away through dust-extraction unit 8 from opening 8.1, and coal dust is effectively reduced.

The concrete structure of dust-extraction unit 8 is further described in detail with reference to Fig. 6.Dust-extraction unit 8 has loudspeaker The opening 8.1 of shape, opening 8.1 gradually taper up downwards, are connected with one end of cylinder 8.2 by pipeline, and the other end of cylinder 8.2 connects Run in wind pipeline, and exhaust blower 8.6 is provided in exhaust duct, and the second anion is provided between exhaust blower 8.6 and cylinder 8.2 Generator 8.7.The top of cylinder 8.2 is equipped with shower tray 8.8, and shower tray 8.8 is connected with water main 6.8, at the bottom of cylinder 8.2 Portion is equipped with strainer 8.3, sewage collecting pool is formed in the cylinder 8.2 of 8.3 lower part of strainer, sewage collecting pool is through filter 8.4 It is connected with circulating pump 8.5, circulating pump 8.5 connects water main 6.8.

Exhaust blower 8.6 is opened, coal dust, gas, waste and old air at fully mechanized mining work surface etc. enter cylinder 8.2 through opening 8.1 In, shower tray 8.8 carries out spraying and dedusting, and coal slime is filtered by strainer 8.3 caused by dedusting, is stayed in cylinder 8.2, and sewage is through filter Net 8.3 enters sewage collecting pool, and after the sewage in sewage collecting pool is filtered by filter 8.4, main water is sent back to by circulating pump 8.5 Pipe 6.8 realizes recycling for water, greatly reduces dust removing down-hole water consumption.Since underground coal dust is larger, exhaust blower 8.6 When rotating at high speed, fan blade will produce friction with coal dust, cause to gather electrostatic on fan blade, and fire or the methane gas that ignites occurs. The present invention is provided with the second anion generator 8.7 before exhaust blower 8.6 thus, produced by the second anion generator 8.7 Anion can neutralize the electrostatic on 8.6 fan blade of exhaust blower, avoid accident.

The gas that dust-extraction unit 8 is discharged generally can be expelled to ground from main exhaust 10, when being worked due to dust-extraction unit 8 A large amount of inflammable methane gas and air can be sucked from fully mechanized mining work surface, and main exhaust 10 is due to being set to underground, diameter one As cannot excessive (generally not super 100cm), easily cause gas concentration over-standard in main exhaust 10 in this way, cause gas in pipe (pipe explosion accident occurs for explosion), then causes on a large scale into lower fire.For this purpose, as shown in fig. 7, the present invention is to underground main exhaust Pipe 10 does following processing, and multiple fire resistant doorsets 10.2 are arranged in interval on main exhaust 10, by multiple fire resistant doorsets 10.2 by main row Tracheae 10 is separated into multistage, is about 150m or so, the configuration that Fig. 7 is wherein any one section per segment length comprising be located at anti- The gas concentration sensor 10.1 on 10.2 right side (i.e. air-flow approaching side) of vent and the temperature sensing positioned at 10.2 left side of fire resistant doorsets Device 10.4 and pressure sensor 10.5 are provided with duster 10.7 at fire resistant doorsets 10.2 in 10.2 left side of fire resistant doorsets, are located at The exhaust duct 10 on 10.2 right side of fire resistant doorsets is connected by branch pipe 10.9 with main air inlet pipe 6.9, is provided with and is used on branch pipe 10.9 Control the opening/closing electrically operated valve 10.8 of branch pipe.In addition to this it is possible to which multiple spray heads 10.6 are arranged at every section.

Gas concentration sensor 10.1, fire resistant doorsets 10.2, temperature sensor 10.4, pressure sensor 10.5, spray head 10.6, duster 10.7 and electrically operated valve 10.8 are connected with controller 10.3, and gas concentration sensor 10.1, temperature pass The gas density detected, pipe temperature, pressure are sent to controller 10.3 by sensor 10.4, pressure sensor 10.5, control Device controls fire resistant doorsets 10.2, spray head 10.6, duster 10.7 and electrically operated valve 10.8 according to testing result.Specifically, Under normal circumstances, fire resistant doorsets 10.2 are in the open state, and electrically operated valve 10.8 is closed, between main air inlet pipe 6.9 and exhaust pipe 10 It is not connected to, when gas concentration sensor 10.1 detects that gas density is excessively high in main exhaust 10, controller 10.3 drives electricity Movable valve 10.8 is opened, and main air inlet pipe 6.9 is connected to main exhaust 10, and the fresh air in main air inlet pipe 6.9 enters main exhaust 10 In, to reduce gas density in main exhaust 10；If temperature sensor 10.4 or pressure sensor 10.5 detect warm in pipe Temperature is higher than normal work maximum pressure higher than 2 times of normal work maximum temperature or pressure in degree, pressure anomaly, such as pipeline 2-4 times, then controller 10.3 judgement occur gas explosion, then send out signal control electrically operated valve 10.8, fire resistant doorsets 10.2 close It closes, opens spray head 10.6 and duster 10.7, fire resistant doorsets 10.2 are arranged close to due to duster 10.7, it in this way can be effective Prevent flame to propagation at fire resistant doorsets 10.2, to efficiently accomplish the process of entire explosion arrestment；It is set by the compartment of fire resistant doorsets 10.2 Accident, can be limited in smaller range, prevent the generation of a wide range of gas explosion by meter.

Refering to Fig. 2A, coalcutter 6 is connected by cutting arm 6.5 with roller 6.7, and pick, roller are equipped on roller 6.7 6.7 are installed on by shaft 6.6 on cutting arm 6.5.Shaft 6.6 stretches out in except cutting arm 6.5, roller 6.7 and cutting arm 6.5 Except shaft 6.6 be fixedly connected, i.e., roller 6.7 does not rotate relative to shaft 6.6, is driven by the rotation of shaft 6.6 Roller 6.7 rotates, and the pick on roller 6.7 cuts coal seam, to complete coal mining activity.Shaft 6.6 is relative to cutting The shell high speed rotation of arm 6.5 is equipped with reduction gearing in 6.5 shell of cutting arm, and coal dust is very big when due to underground work, coal Dirt can enter enclosure interior from the gap between shaft 6.6 and shell, be damaged to internal gear and shaft 6.6, in repair, It needs all to dismantle the shell of cutting arm 6.5, the replacement to sealing structure could be completed, maintenance time is long, heavy workload；For This, devises a variety of rotating shaft sealing structures in the prior art, these sealing structures are generally disposed in shell, and sealing structure passes through Oil lubrication, lubricating oil can be oozed out from the gap between shaft and shell, adsorbed coal dust, caused coal dust heap at rotating shaft sealing Product, rotating shaft sealing structure reduced service life.

As shown in Fig. 8 A, 8B, 8C, sealing structure is made of the rotating shaft sealing structure of the present invention inside and outside two parts, external Sealing shroud 6.61 is located at except the shell 6.62 of cutting arm 6.5, and two sawtooth pressing plates 6.65 are internally provided in shell 6.62, saw The whole semicircular in shape of tooth support 6.65, two sawtooth pressing plates 6.65 are opposite to be fastened in shaft 6.6, in two adjacent teeth 6.67 Between fill airtight and watertight padding 6.63, further, airtight and watertight padding 6.63 can pass through oil immersion handle, offered at the top of tooth 6.67 The groove for accommodating stationary seal ring 6.69, can open up groove at the top of each tooth 6.67, can be arranged so multiple quiet close Seal ring 6.69, it is multiple-sealed to be formed so that sealing effect is more preferable.In order to reduce internal seal structure countershaft 6.6 Abrasion can be arranged axle sleeve 6.68 outside shaft 6.68, and stationary seal ring 6.69 is placed on axle sleeve 6.68, will be sawed by cover board 6.64 Tooth support 6.65 compresses, and cover board 6.64 can be fixed on for example, by bolt etc. between shell 6.62 and support plate 6.66.

When internal seal structure is installed, axle sleeve 6.68 is placed in shaft 6.6, stationary seal ring 6.69 is placed on axle sleeve later On 6.68, the position of stationary seal ring 6.69 and the top groove of tooth 6.67 are corresponding, later by 6.63 consolidation of the airtight and watertight padding of oil immersion It is filled between each tooth 6.67, is later compressed sawtooth pressing plate 6.65 by cover board 6.64, cover board 6.64 is fixed on support plate On 6.66, just installation is complete for internal seal structure.The internal seal structure of the present invention, is made by the design of zigzag pressing plate, Airtight and watertight padding is by mutually separated fixation, so as to avoid winding and caking occur between airtight and watertight padding；Pass through the groove pair of tooth top Stationary seal ring carries out limit compression, can effectively prevent mobile stationary seal ring, deformation, damage, while can facilitate at each tooth top Setting stationary seal ring, consequently facilitating realization is multiple-sealed, the semicircle that sawtooth pressing plate 6.65 is fastened by two forms, dismounting side Just, it is conveniently replaceable internal airtight and watertight padding, it is easy to maintain.

External sealing shroud 6.61 is made of rubber or plastics, is also to be snapped together to be formed by two semicircles, figure 8C is the vertical view of one of semi-circular structure, and sealing shroud 6.61 is substantially in infundibulate, has the side 6.614 turned up, turns up It is provided with the hole passed through for screw rod on side, sealing shroud 6.61 can be fixed on shell 6.62 by the hole using screw rod, The ontology 6.613 of sealing shroud 6.61 is vertically arranged relative to side 6.614, and body interior forms the accommodation space for accommodating shaft 6.6 6.612, it is provided with multiple rows of deformable lip 6.615 on the inner wall of accommodation space 6.612, spacing d2 between lip 6.615 It is slightly less than the diameter of shaft 6.6, it is preferred that the small 1mm-3mm of diameter relative to shaft 6.6, in this way when sealing shroud 6.61 is placed on After in shaft 6.6, lip 6.615 is slightly deformed, and lip 6.615 can be tightly attached to 6.6 outer surface of shaft, before ontology 6.613 End 6.611 gradually tapers up to form the opening that shaft 6.6 is pierced by, and the diameter d1 of the opening is identical as the diameter of shaft 6.6.Further , for the ease of manufacturing and replacing sealing shroud 6.61, side 6.614, ontology 6.613, front end 6.611 and lip 6.615 pass through Molding is integrally formed.In use, the sealing shroud 6.61 of two semicircles is fastened in shaft 6.6, side 6.614 is consolidated by screw rod Due on shell 6.62.

The present invention is provided with inside and outside two sealing structures, by between external sealing structure countershaft 6.6 and shell 6.62 Gap covered, lip 6.615 is that shaft 6.6 provides multiple tracks protection, and the distressed structure of lip 6.615 makes lip 6.615 can also be kept when shaft 6.6 rotates with the close contact of shaft 6.6, good airproof performance, external sealing structure can be with Prevent most coal dust from entering or being piled up at gap, while outer seal structure is designed to easily replace structure, it can be outside When part sealing structure damages when poorly sealed lip 6.615 (such as the perforation of ontology 6.613 or), in time by external sealing shroud 6.61 It replaces, internal seal structure is replaced without dismantling shell 6.62.Internal seal structure uses the longevity with longer Life, the design of sawtooth pressing plate, groove, sealing ring make coal dust cannot be introduced into inside shell 6.62.

In the actual production of underground, when being sealed using traditional bearing seal ring, the maintenance intervals of sealing structure About 4-6 months；When using only the internal seal structure of the present invention, the maintenance intervals of sealing structure are about 12-15 Month；Using the inner sealing of the present invention when outside seals the sealing structure being combined, the maintenance cycle of internal seal structure is big The replacement cycle of about 3-5, outer seal structure are about 6 months or so.It is possible thereby to find, pass through interior outer seal configuration Use, the maintenance cycle of shaft can be greatly prolonged, avoid the damage of rotating shaft sealing structure, during coalcutter use, Maintenance load can be greatly reduced without dismantling shell by only needing to change outer seal structure, shorten maintenance time.

Many details are elaborated in the above description in order to fully understand the present invention.But above description is only Presently preferred embodiments of the present invention, the invention can be embodied in many other ways as described herein, therefore this Invention is not limited by specific implementation disclosed above.Any those skilled in the art are not departing from the technology of the present invention simultaneously In the case of aspects, all technical solution of the present invention is made using the methods and technical content of the disclosure above many possible Changes and modifications, or it is revised as the equivalent embodiment of equivalent variations.Every content without departing from technical solution of the present invention, according to this The technical spirit any simple modifications, equivalents, and modifications made to the above embodiment of invention, still fall within skill of the present invention In the range of the protection of art scheme.

Claims

1. a kind of coalcutter, which is characterized in that the walking basal seat (6.3) of protective plate (6.1) and bottom including top, pedestal (6.3) organism (6.2) is installed, protective plate (6.1) is supported by the support device (6.4) being located on pedestal (6.3), support dress on (6.4) are set, driving motor, controller and communication device are provided in body (6.2), body (6.2) passes through cutting arm (6.5) It is connected with roller (6.7), pick is installed on roller (6.7), roller (6.7) is installed on cutting arm by shaft (6.6) (6.5) on, water main (6.8) is passed through with main air inlet pipe (6.9) above protective plate (6.1) to roller (6.7)；Protective plate (6.1) Top have stretch out cover board (6.11), form receiving detection device between cover board (6.11) and water main (6.8) (6.10) it is close to water main (6.8) in the back of accommodation space, detection device (6.10).

2. coalcutter according to claim 1, which is characterized in that main air inlet pipe (6.9) is located under water main (6.8) Side, main air inlet pipe (6.9) and the end of water main (6.8) stretch out in except protective plate (6.1), main air inlet pipe (6.9) and master The end of water pipe (6.8) extends substantially to the top of roller (6.7), and the water mist that water main (6.8) is sprayed is shrouded in roller (6.7) on.

3. coalcutter according to claim 1, which is characterized in that the end of main air inlet pipe (6.9) is provided with multiple nozzles (6.12), Open Side Down for nozzle (6.12), and the fresh air entered from main air inlet pipe (6.9) is sprayed downwards by nozzle (6.12), spray Mouth (6.12) is located at the top of roller (6.7).

4. coalcutter according to claim 1, which is characterized in that in main air inlet pipe (6.9) at nozzle (6.12) It is provided with the first anion generator (6.13).

5. coalcutter according to claim 1, which is characterized in that the support device (6.4) includes left support arm, right branch Brace, left hydraulic prop and right hydraulic prop；Left support arm and the bottom of right support arm are hinged by lower bearing pin, left liquid Pressure pillar is supported in the outside of left support arm, and right hydraulic prop is supported in the outside of right support arm, left support arm and right support arm It is V-shaped.