CN100577984C - Down-hole coal excavation apparatus - Google Patents

Down-hole coal excavation apparatus Download PDF

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Publication number
CN100577984C
CN100577984C CN200710015155A CN200710015155A CN100577984C CN 100577984 C CN100577984 C CN 100577984C CN 200710015155 A CN200710015155 A CN 200710015155A CN 200710015155 A CN200710015155 A CN 200710015155A CN 100577984 C CN100577984 C CN 100577984C
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China
Prior art keywords
coal
hydraulic
chute
jack
winning machine
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Expired - Fee Related
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CN200710015155A
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Chinese (zh)
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CN101100941A (en
Inventor
江卫
王明南
林万令
李景恒
冯庆全
蒋政
冀庆来
张波
李国锋
宋天成
朱辉
王振坤
李晴
韩河
孙卓辉
张联龙
何亮
周晓玲
田霜
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No 1 Machinery Factory Zaozhuang Mining (group) Co Ltd
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No 1 Machinery Factory Zaozhuang Mining (group) Co Ltd
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Priority to CN200710015155A priority Critical patent/CN100577984C/en
Publication of CN101100941A publication Critical patent/CN101100941A/en
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Abstract

A coal excavation device for thin and super thin coal bed includes coal excavation device, protective hydraulic bracket and scraper blade transmission machine. An electric liquid control system is included in a single bracket on the protective hydraulic bracket. The control system includes a bracket controller, electric liquid valve set, pressure sensor of hydraulic piston, routing sensor of moving hydraulic jack, routing sensor of balance jack, routing sensor of side push jack, hydraulic piston sensor and signal cables connected to related input port. Hydraulic cylinder and jack cylinders are connected to the valve set. Bracket controller is connected to the valve set. A left roller rail is extended to the bottom of the left slot. There is cable slot on the chute moving bracket with a cable hook to the slot right wall. The moving bracket is connected to the cable slot.

Description

Down-hole coal excavation apparatus
Technical field
The present invention relates to coal mining equipment.
Background technology
China is thin widely distributed with ultra-thin coal seam, and reserves are abundant.At present, verify the girdle recoverable reserves and be about 61.5 hundred million tons, accounted for 20% of total recoverable reserves.According to statistics, national state-owned emphasis girdle reserves are 25.29 hundred million tons.Because lack the exploitation equipment that compliance is good, production efficiency is high, the thin seam mining per unit area yield is low, cost of production is high, deficiency in economic performance, makes a lot of coal enterprise abandon thin seam mining, causes the serious waste of coal resources.Be accompanied by continuing to increase of present exploitation dynamics, reserves thick and medium-thickness seam reduce day by day, and thin and ultra-thin coal seam will become main mining coal seam.Therefore, solve girdle high-efficiency mining problem for prolonging mine service-life, improve resource recovery, develop a circular economy, needing badly.Be subjected to the work plane spatial constraints, girdle exists the coal seam to bury deeply, the geological conditions complexity, and tomography is many, and the ore deposit is pressed big, and unit yield is low, and tunnel consumption rate height is taken over anxiety, workman's operating condition difference problem, thin seam mining is the weak link of coal pit mining always; Commonly used down-hole coal excavation apparatus is comprising coal-winning machine, drag conveyor, electric-hydraulic control low coal seam shield type hydraulic support; Common coal-winning machine is a flitting, and coal-winning machine is comprising cylinder, motor, coal-mining machine hydraulic system, coal miner spray dust falling system, left wheel, right gear; Exploitation colliery drag conveyor commonly used is passed frame, tail passing frame, sprocket wheel, scraper plate, scraper chain, head lead-over groove, tail lead-over groove comprising head power set, tail power set, a plurality of chute, rack rails, scraper plate, head, and the head power set are provided with reducer, connect cover and motor; Chute is passed frame comprising the chute on left ledge, right ledge, chute base plate, right ledge right side; A plurality of chutes are that front and back distribute; Ledge upper surface, a left side is a coal-winning machine left wheel track; The head power set are connected with chute is anterior, and this kind drag conveyor only is suitable for the exploitation of thick and medium-thickness seam; In underground work, chute needs regular moving, in this course, the bolt that connects between chute and the chute is loosening easily, must in time tighten, and be engaged in its working strength of this work and danger in the down-hole all very big, also caused descend the application life of chute thus; Because the head power set fixedly connected with the chute front portion, the chute front portion can only be placed in the digging laneway, during the coal-winning machine operation one of the chute front portion section coal seam digging less than, the coal mining rate is low; Electric-hydraulic control low coal seam shield type hydraulic support comprising base, hydraulic vertical prop, front rod, back link, back timber, side guard board, caving shield, passing hydraulic jack, balance jack, thruster jack, be installed in support internal spraying system, electrohydraulic control system in the back timber inside wall; Hydraulic vertical prop, front rod, back link and passing hydraulic jack are installed on the base respectively, connect back timber and hinged with it on the piston rod of hydraulic vertical prop, hinged caving shield on front rod, the back link, hinged base under front rod, back link bar, the back link, the rear portion and the caving shield of back timber are hinged, and the thruster jack is installed on the back timber, and the thruster jack piston rod is fixedlyed connected with side guard board, balance jack is installed on the caving shield, articulated roof beam on the balance jack piston rod; The ascending, descending of hydraulic support, a series of actions such as push away, move all by HYDRAULIC CONTROL SYSTEM, so some hydraulic control valves and control valve are installed on the support.Control valve is by workman's push-pull knob control, thus the work that moves frame by manually-operated, automaticity is low, it is low to put coal efficient.
Summary of the invention
The purpose of this invention is to provide a kind of down-hole coal excavation apparatus thin and the ultra-thin coal seam exploitation that is suitable for.
For achieving the above object, the technical solution used in the present invention is: a kind of down-hole coal excavation apparatus, comprising coal-winning machine, electric-hydraulic control low coal seam shield type hydraulic support, drag conveyor; Coal-winning machine is a flitting, and coal-winning machine is comprising cylinder, motor, coal-mining machine hydraulic system, coal miner spray dust falling system, left wheel, right gear; Electric-hydraulic control low coal seam shield type hydraulic support is comprising single-side stand, single-side stand comprising: base, hydraulic vertical prop, front rod, back link, back timber, side guard board, caving shield, passing hydraulic jack, balance jack, thruster jack, be installed in support internal spraying system, electrohydraulic control system in the back timber inside wall; Hydraulic vertical prop, front rod, back link and passing hydraulic jack are installed on the base respectively, connect back timber and hinged with it on the piston rod of hydraulic vertical prop, front rod and back link are gone up hinged caving shield respectively, the following respectively hinged base of front rod and back link, the rear portion and the caving shield of back timber are hinged, and the thruster jack is installed on the back timber, and the thruster jack piston rod is fixedlyed connected with side guard board, balance jack is installed on the caving shield, articulated roof beam on the balance jack piston rod; Drag conveyor is comprising head power set, tail power set, a plurality of chute, rack rails, and the head power set are provided with reducer, connect cover and motor; Chute is passed frame comprising the chute on left ledge, right ledge, chute base plate, right ledge right side; A plurality of chutes are that front and back distribute; The coal-winning machine right gear is positioned at drag conveyor rack rails top and is engaged with, and the passing hydraulic jack piston rod in each single-side stand is connected with head power set, tail power set, a plurality of chute respectively; Be characterized in: electrohydraulic control system is comprising bracket controller, electromagnetic valve group in current, hydraulic vertical prop pressure sensor, passing hydraulic jack stroke sensor, balance jack stroke sensor, thruster jack stroke sensor, the holding wire of hydraulic vertical prop pressure sensor and each jack stroke sensor respectively with corresponding connection of signal input part of bracket controller, the corresponding connection of liquid in-out connector of the fluid pressure line of hydraulic vertical prop hydraulic cylinder and each jack hydraulic cylinder and electromagnetic valve group in current; Bracket controller is electrically connected with electromagnetic valve group in current; A left side is extended with coal-winning machine left wheel track left at the bottom of the ledge, and coal-winning machine left wheel track is with corresponding at the bottom of the left ledge and be an integral body; Coal-winning machine left wheel track left bottom has a boss that extends downwards; Left wheel is positioned at the top of coal-winning machine left wheel track in the coal-winning machine, and with it the roll connection corresponding with left wheel in the coal-winning machine of coal-winning machine left wheel track; The chute on right ledge right side is passed on the frame and is had the cable channel that opening makes progress, and is fixedly connected with the cable hook on the right flank on the right flank of cable channel right side wall, and chute passing frame is fixedlyed connected with cable channel.
Owing to be extended with coal-winning machine left wheel track left at the bottom of the left ledge among the present invention, coal-winning machine left wheel track is with corresponding at the bottom of the left ledge, and the with it rolling connection corresponding with left wheel in the coal-winning machine of coal-winning machine left wheel track; So just reduced the working depth that coal-winning machine is mined, so the present invention is suitable for and the ultra-thin coal seam exploitation thin; Owing to have cable channel in the right ledge among the present invention, have the cable hook on the cable channel, portability cable on cable channel and the cable hook uses safety when of the present invention.When using among the present invention electric-hydraulic control low coal seam shield type hydraulic support under the coal mine, no longer carry out a series of manual operations with artificial by frame, improved the automaticity of exploiting, output increases, and has reduced labor strength, has increased safety.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the structural representation of Fig. 1 middle scraper conveyer.
Fig. 3 is the another kind of structural representation of Fig. 1 middle scraper conveyer
Fig. 4 is the structural representation of chute among Fig. 2.
Fig. 5 is the structural representation of electric-hydraulic control low coal seam shield type hydraulic support among Fig. 1.
Fig. 6 is the structural representation of base among Fig. 5.
Fig. 7 is the schematic diagram of the another kind of structure of electric-hydraulic control low coal seam shield type hydraulic support among the present invention.
Fig. 8 is electrohydraulic control system configuration and a connection layout among the present invention.
Fig. 9 is the wiring diagram of the electromagnetic valve group in current in the electric-hydraulic control low coal seam shield type hydraulic support among the present invention.
Figure 10 is the full face electrohydraulic control system configuration and the connection layout of electric-hydraulic control low coal seam shield type hydraulic support among the present invention.
Figure 11 is the wiring diagram of double loop power supply case in the electric-hydraulic control low coal seam shield type hydraulic support among the present invention.
The specific embodiment
Further specify embodiments of the present invention and effect with following non-limiting embodiment.
Embodiment 1:
A kind of down-hole coal excavation apparatus, shown in Fig. 1,2,3,4,5,6,7,8,9,10,11, comprising: coal-winning machine 15, drag conveyor 14, electric-hydraulic control low coal seam shield type hydraulic support; Coal-winning machine 15 is common flitting, and coal-winning machine 15 is comprising cylinder, motor, coal-mining machine hydraulic system, coal miner spray dust falling system, left wheel, right gear; The motor drives cylinder rotates and mines, and motor drives left wheel, right gear rotate and make coal-winning machine front and back on drag conveyor move; Drag conveyor 14 is passed frame 14-6, tail commonly used comprising head power set 14-1, tail power set 14-5 commonly used, head commonly used and is passed frame, tail lead-over groove commonly used, a plurality of chute 14-3, cable channel 14-9, dumbbell pin 14-10, rack rails, sprocket wheel, scraper plate, scraper chain commonly used, and head power set 14-1 is provided with reducer, connects cover and motor; The head power set are connected with common method with sprocket wheel; Scraper chain is installed on the sprocket wheel with common method and becomes to be in transmission connection with it; Scraper plate is installed on the scraper chain with common method; The head power set are fixedlyed connected with common method with head passing frame; It is corresponding with the piston rod of passing hydraulic jack in the electric-hydraulic control low coal seam shield type hydraulic support and connect with common method that head is passed frame; Tail power set 14-5 passes frame with tail fixedlys connected with common method; It is corresponding with the piston rod of passing hydraulic jack in the electric-hydraulic control low coal seam shield type hydraulic support and connect with common method that tail is passed frame; Chute 14-3 passes frame comprising the chute on left ledge 14-4, right ledge 14-8, chute base plate 14-7, right ledge 14-8 right side; A plurality of chute 14-3 are that front and back distribute; Scraper plate, scraper chain are installed in the chute with common method respectively; A left side is extended with coal-winning machine left wheel track 14-2 left at the bottom of the ledge, and coal-winning machine left wheel track 14-2 is with corresponding at the bottom of the left ledge 14-4 and be an integral body; Coal-winning machine left wheel track 14-2 left bottom has a boss 14-11 who extends downwards; Left wheel is positioned at the top of coal-winning machine left wheel track 14-2 in the coal-winning machine, coal-winning machine left wheel track 14-2 and with it roll connection corresponding with left wheel in the coal-winning machine; The chute on right ledge 14-8 right side is passed on the frame and is had the cable channel 14-9 that is used to carry cable that opening makes progress, the fixedly connected cable hook 14-12 that carries cable that is useful on the right flank of cable channel 14-9 right side wall, chute pass frame fixedlys connected with cable channel 14-9; It is corresponding with the piston rod of passing hydraulic jack in the electric-hydraulic control low coal seam shield type hydraulic support and connect with common method that chute is passed frame; Head power set 14-1 is connected with common method with the head lead-over groove; Tail power set 14-5 is connected with common method with the tail lead-over groove; Be connected with common method with head lead-over groove, tail lead-over groove respectively before and after a plurality of chute 14-3; The coal-winning machine right gear is positioned at drag conveyor rack rails top and is engaged with, and the right ledge of chute is fixedlyed connected with common method with rack rails; Rack rails is fixedlyed connected with common method with chute passing frame; In the present embodiment, reducer is a planetary reduction gear; The planetary reduction gear compact conformation, it is little to take up room; The head power set become to be arranged vertically with chute, and promptly head power set 14-1 is arranged in parallel about being; When the underground work use was of the present invention, the head power set were installed in the haulage drift, and coal-winning machine 15 can be adopted the coal seam in the sky digging laneway fully, coal mining rate height; In the present embodiment, chute connects with common method by dumbbell pin 14-10 before and after among the chute 14-3, ledge left surface middle part, a chute left side is connected with common method by dumbbell pin with ledge left surface middle part, a chute left side, back before each, and the right ledge right flank of chute middle part is connected with common method by dumbbell pin with the right ledge right flank of back chute middle part before each; Electric-hydraulic control low coal seam shield type hydraulic support, comprising single-side stand 2, single-side stand comprising base 8, hydraulic vertical prop 10, front rod 11, back link 7, back timber 1, side guard board 4, caving shield 6, pass hydraulic jack 9, balance jack 5, thruster jack 3, be installed in support internal spraying system, electrohydraulic control system in back timber 1 inside wall; Hydraulic vertical prop 10, front rod 11, back link 7 and passing hydraulic jack 9 are installed in respectively on the base 8, connect back timber 1 and hinged with it on the piston rod of hydraulic vertical prop 10, front rod 11, back link 7 are gone up hinged caving shield 6 respectively, the following respectively hinged base 8 of front rod 11, back link 7, the rear portion of back timber 1 and caving shield 6 are hinged, thruster jack 3 is installed on the back timber 1, thruster jack 3 piston rods are fixedlyed connected with side guard board 4, balance jack 5 is installed on the caving shield 6, articulated roof beam 1 on balance jack 5 piston rods; Electrohydraulic control system is comprising bracket controller 12, electromagnetic valve group in current, hydraulic vertical prop pressure sensor, passing hydraulic jack stroke sensor, balance jack stroke sensor, thruster jack stroke sensor, the holding wire of hydraulic vertical prop pressure sensor and each jack stroke sensor respectively with corresponding connection of signal input part of bracket controller 12, the corresponding connection of liquid in-out connector of the fluid pressure line of hydraulic vertical prop hydraulic cylinder and each jack hydraulic cylinder and electromagnetic valve group in current; Bracket controller 12 is electrically connected with common method with electromagnetic valve group in current; Bracket controller 12, electromagnetic valve group in current are installed on the back timber, the hydraulic vertical prop pressure sensor is installed on the hydraulic vertical prop hydraulic cylinder, passing the hydraulic jack stroke sensor is installed on the passing hydraulic jack hydraulic cylinder, the balance jack stroke sensor is installed on the balance jack hydraulic cylinder, and thruster jack stroke sensor is installed on the thruster jack hydraulic cylinder; Bracket controller is by electromagnetic valve group in current, hydraulic vertical prop pressure sensor, and the control hydraulic vertical prop raises, retraction stroke, further controls the back timber height; Bracket controller is further controlled the pushing and sliding stroke by electromagnetic valve group in current, passing hydraulic jack stroke sensor; Bracket controller is further controlled the balance of back timber by electromagnetic valve group in current, balance jack stroke sensor; Bracket controller is by electromagnetic valve group in current, thruster jack stroke sensor, controls further that side guard board outwards extends, retraction stroke; In the present embodiment, 2 six of single-side stands are one group, and the bracket controller 12 on the adjacent single-side stand 2 links to each other by trunk cable; The adjacent single-side stand operation of the automatically controlled one action of separate unit bracket controller, this operation of electro-hydraulic reversing valve group hand push button; The separate unit support falls-moves-rise automatic sequence control; Become pack support to control automatically, comprising: become pack support fall automatically-move-liter, become the automatic pushing and sliding of pack support; In work plane local operation and " long-range " operation; Can realize this locking and work plane sudden-stop function at work plane; Adopt automated control technologies such as hydraulic support priming.
Below be the relevant explanation among the present invention:
1, configuration of pm31 electrohydraulic control system and connection
Figure 10 and Fig. 8 have showed the configuration state and the connecting relation of pm31 electrohydraulic control system among the present invention who is applied to the user job face.From figure, can understand the overall picture of system: constitute their distribution and how to be connected into system by which equipment and device.
P is a hydraulic vertical prop pressure sensor CA cable assembly among Fig. 8, h is for passing hydraulic pressure thousand top line journey sensor electrical cable assemblies, i is an electromagnetic valve group in current electromagnetic coil CA cable assembly, 12 is bracket controller, 13-6 is a trunk cable assembly between frame, m is an electromagnetic valve group in current, and n is the hydraulic vertical prop pressure sensor, and O is for passing the hydraulic jack stroke sensor.Each controller group only need be adorned a bus lifter, is connected on usually on the isolating coupler, also can be connected on this and organize on arbitrary controller.
What Figure 10 represented is the whole system trunk of full face, bracket controller of each single-side stand equipment, interconnected in order one-tenth net between the bracket controller, also be equipped with and connected some other indispensable part of appliance, form perfect system, part of appliance is comprising bracket controller 12, isolate coupling device 13-2, double loop power supply case 13-3, bus lifter 13-4, network terminal device 13-5, trunk cable assembly 13-6 between frame, power supply output cable assembly 13-7, coupling device-this frame trunk cable assembly 13-8, coupling device-adjacent frame trunk cable assembly 13-9, Fig. 8 is for being the configuration connection layout of single frame system of core with each bracket controller, establish crossheading main control computer as system, then the network port by termination frame controller connects to the main control computer system by trunk cable and associated components, expression be within a single-side stand, to be core with the bracket controller, it is exactly the complete electrohydraulic control system in a cover full face that the single frame system that comprises its input/output peripheral, each single frame system are combined among Figure 10.Below do several explanations with regard to the relevant issues of system configuration and connection:
(1) cellular system in each single-side stand is a core with a bracket controller, also comprises hydraulic vertical prop pressure sensor, passing hydraulic jack stroke sensor and a cover electromagnetic valve group in current as bracket controller ancillary equipment.The hydraulic vertical prop pressure sensor is measured hydraulic vertical prop cavity of resorption hydraulic coupling.Pass the hydraulic jack stroke sensor and measure the stroke of passing hydraulic jack.Electromagnetic valve group in current is the execution unit of electrohydraulic control system, be divided into some unit by controlled device and holding function, each unit comprises the master control reversal valve that surges, a corresponding with it electromagnetic priority valve that is used for controlling the driving main reversing valve, and electromagnetic priority valve drives with two electromagnetic coils.A unit of electromagnetic valve group in current generally is used for controlling stretching of same hydraulic cylinder and contracts two and move (i.e. two functions), and the adhesive respectively of two electromagnetic coils has caused the action of these two correspondences.What of controlled device and control action (function) are the unit number of electromagnetic valve group in current depend on.Also have an electromagnetic coil drive in each single-side stand system, bracket controller is controlled each electromagnetic coil of excitation electromagnetic valve group in current by it.
(2) bracket controller of work plane is grouped because of power supply relation, and adjacent maximum 6~7 bracket controllers become a controller group by one tunnel DC power supply independently.The sign of grouping be group with group between all insert an isolating coupler, it has cut off that electric between group and group connects and by the photoelectricity communication data-signal that is coupled, this mode is for reaching the measure that the intrinsic safety the subject of knowledge and the object of knowledge is taked.Isolating coupler is introduced for power supply passage is provided in addition.
(3) all bracket controllers are made the line cable interconnect dry up and are become network.Trunk cable begins in proper order whole bracket controllers to be linked up (organizing separation through isolating coupler intermediary) from first bracket controller at two ends, the left and right sides.Each bracket controller all has address number, and address number is continuous in order.Trunk cable has 4 heart yearns, wherein 3 is the common wires that connect: No. 1 heart yearn is power supply 12V, No. 2 heart yearns are the communication bus that is called between all bracket controllers of TBUS, and No. 4 heart yearns are power supply 0V, and No. 3 heart yearns are the order wires that is called between the adjacent single-side stand of Bidi.
(4) network terminal device in the system, bus lifter are the necessary servicing unit of assurance system operate as normal.
(5) type of explosion proof construc tion of the automatically controlled part of pm31 system works face is except that power supply box is Flameproof intrinsically safe, and other are essential safe type entirely.
2, the equipment of pm31 electrohydraulic control system and device among the present invention
2.1 bracket controller (model pm32/sg)
Bracket controller is actually a miniature special use control computer, and hardware and software has concurrently.Application program in the software is that the control operation that aims at single-side stand is served.The deletion of application program and load and can carry out in easy mode at work plane, this provides convenience for the modification of application program and the adjustment of control function, thereby strengthens the compliance of system.
Bracket controller has complete human-computer interaction interface, is provided with 25 operated keys, locking rapid stop key button, and the LED dot matrix character display screen of 16 words, the LED luminous tube signal of various functions shows and buzzer.These facilities have guaranteed that the operator operates the prompting and the status information of control and timely acquisition system easily.Bracket controller has enough various types of input ports, delivery outlet and port, and their cable socket all is distributed in the bracket controller back, totally 12.The pattern of connector assembly is unified, is 4 cores, and No. 1 core is power supply 12V, and No. 4 cores are 0V or ground connection, and the purposes of No. 2, No. 3 cores is different with function.
Bracket controller operating voltage DC12V, operating current 30mA.The IP68 degree of protection.
2.2 bracket controller installing rack
The bracket controller installing rack is used for installing and fixing and the protective cradle controller, pins the cable plug that connects with bracket controller simultaneously.The bracket controller installing rack is installed on the back timber of single-side stand with common method.
2.3 electromagnetic valve group in current
Electromagnetic valve group in current is a modular construction.Each unit comprises master control reversal valve and the corresponding electromagnetic priority valve that surges, and the electromagnetic priority valve suction that energising produces by electromagnetic coil moves, and there are two electromagnetic coils a unit, controls two actions respectively.The action of electromagnetic priority valve can also directly push the outer end of push rod except the suction by electromagnetic coil, and push rod drives the action of electromagnetic pilot spool.Push rod outer end envelope has the glue guard shield, for manually pushing.There are fault or other not to use under the situation of electric-control system at power failure, electric-control system temporarily,, can directly make the electromagnetic pilot valve events, but do not allow often operation like this, damage because easily cause by push rod as emergency operation.
Electromagnetic coil operating voltage DC12V, operating current 90mA.Fig. 9 represents the layout (electromagnetic valve group in current is Unit 4, wherein adorns electromagnetic priority valve and adopts 3 unit of electric control operation, and this figure draws by the configuration of 3 unit electromagnetic valve group in current) in electromagnetic valve group in current dead ahead.
The function and the configuration of electromagnetic valve group in current see Table 2.1.
The functional configuration of table 2.1 driver and electromagnetic valve group in current and corresponding relation
Figure C20071001515500111
S1, S2, S3 are the electromagnetic coil socket among Fig. 9, and S1 connects bracket controller, and S2 connects bracket controller, and S3 connects bracket controller, are the pilot valve pusher button 1., 2., 3., 4., 5., 6..
2.4 electromagnetic coil drive (model mcv/8/d)
Electromagnetic coil drive is an expansion annex of bracket controller, and it is connected between bracket controller and the electromagnetic coil, is gone into power supply and control signal from bracket controller, carries out the task that each unit electromagnetic coil is infeeded power supply and controls on/off.The operating voltage of electromagnetic coil drive is DC12V.Electromagnetic coil drive has 1 input socket (D), and (V1~V8), maximum drivable electromagnetic priority valve numbers are 8 unit (16 coils) to maximum 8 outputs.
2.5 hydraulic vertical prop pressure sensor
The hydraulic vertical prop pressure sensor detects the hydraulic coupling in the hydraulic vertical prop cavity of resorption in the single-side stand, have pressure tap in the hydraulic vertical prop, the hydraulic vertical prop pressure sensor inserts the supporting state of real time monitoring single-side stand in the hydraulic vertical prop pressure tap, and the important parameter of control procedure is provided to system.Measurement category 0~the 60MPa of hydraulic vertical prop pressure sensor, sensing element are the resistance-strain bridge circuit, the low drift amplifier of band temperature-compensating in the hydraulic vertical prop pressure sensor, and (0.2~1.27mA) gives bracket controller to the output current analog signal.Hydraulic vertical prop pressure sensor operating voltage DV12V.
2.6 stroke sensor (comprises the stroke sensor body, model sns/rs/a; The stroke sensor magnet ring, model sns/rs/magn.kc; Connector socket, model conm/4/sm)
Stroke sensor is used for detecting the shift motion value of the piston rod of jack, the stroke value representative be the residing position of single-side stand or scraper-trough conveyer, be the important evidence of control procedure, pass the process that hydraulic jack piston rod position decision pushing and sliding move frame.Stroke sensor is contained in the hydraulic cylinder, it is the straight tube structure of elongated (Φ 17.2mm), one end is fixed on cylinder ends, body is deep into the piston rod center and aims in its slotted hole that gets out, along axial regular resistance row and the tongue tube row of arranging solid matter, they are connected into the circuit of network potentiometer in the body.Setting-in a little permanent-magnetic clamp that is enclosed within on the sensor tube in the piston, along with piston rod moves, its little magnetic field makes the tongue tube junction closure of the location, mobile the touching that is equivalent to potentiometer brushed away this position, the variation of potentiometer output valve has reflected the variation of stroke, the conversion of the amplifier of band in the process stroke sensor body again is to bracket controller output current analog signal (0.2~1mA).Connector socket is positioned at the end of jack outer wall.Stroke sensor can be surveyed range can be determined that the range ability that this support is passed the stroke sensor of hydraulic jack equipment is 0~700mm by the user according to the pushing and sliding unit advance of single-side stand, resolution is 3mm, operating voltage DC12V.
2.7 double loop power supply case (model ntz/d/2 * 1.5)
Power supply box is the electric power conversion apparatus of electrohydraulic control system special use, and it is gone into 90V~250V AC power from work plane, is transformed into direct current 12V, powers to the pm31 electrohydraulic control system.Two independently AC/DC glue envelope modules are housed in the power supply box, constitute independently two-way power supply.Every road nominal load current 1.5A at most can be to 6~7 adjacent supports controller power supplies.Every road power supply all has the quick overcurrent protection of cut-off type, and the power supply box input/output port is arranged and the back panel wiring terminal is seen Figure 11 with the connecting relation that exchanges input.Among Figure 11,127V or 220V AC input inlet wire Y enter power supply box E, and after exchanging turnover wiring terminal a, b, c, d, e, f in the case, 127V or 220V AC are by outlet X.Z road 12VDC output, C road 12VDC output.
2.8 isolating coupler (model pm3/pa/11)
Isolating coupler is connected between the two adjacent groups bracket controller of being powered by different electrical power, with the complete electrical isolation of two pack support controllers, introducing each group for power supply provides passage, inside to have four photoelectric coupled devices to provide passage for the two-way signaling transmission of two data telecommunication line TBUS and Bidi.Isolating coupler has 4 sockets, is divided into A, B both sides (2 mouths of every side), connects segregate two pack support controllers respectively, and outer socket connects bracket controller, and inner socket connects the 12V power supply, then can connect bus lifter (seeing Figure 10 for details) as not connecing power supply.
Isolating coupler operating voltage DC12V.
2.9 isolating coupler mounting blocks (model pm31/pa/hlt/a)
Be used for fixing isolating coupler and pin its cable plug.
2.10 network terminal device (model pm3/ack)
This is the situation for the data communication bus TBUS of surveillance, keeps proper communication and the annex that is provided with, and the two ends of controller network respectively are provided with one.Software their end automatically is set to " synchronized transmission ", regularly sends synchronization pulse to communication bus; The other end is set to " replying ", after receiving the synchronization pulse that transmits by bus, sends the transponder pulse signal to bus immediately.The situation of sending according to two ends terminal organ signal and transmitting on bus and situation that bracket controller receives, the judgement by controller software reach monitor bus and guarantee the purpose of proper communication.The emergency stop function of system also is to work by them.On the socket that network terminal device insertion two ends bracket controller is vacated, connect an end of main control computer again, an end of main control computer then is inserted in the main control computer system.Network terminal device operating voltage: DC6~30V, operating current 3.5mA.
2.11TBUS bus lifter (model pm3/pa/tpu)
This is for guaranteeing that TBUS bus normal signal transmission promotes the set annex of bus voltage, and each bracket controller group is used one, is inserted on the inboard socket of this isolating coupler of organizing an end or this is organized on the socket of any one bracket controller.TBUS bus lifter operating voltage DC12V, operating current 5mA.
2.12 CA cable assembly and annex thereof
Be used for connecting between each apparatus of system the one section cable that has also installed plug at two ends and be called CA cable assembly.The employed various CA cable assemblies of system all have been illustrated among Figure 10 and Fig. 8.
The details of the various CA cable assemblies that the support electrohydraulic control system is used are listed table 2.2 in.
The CA cable assembly tabulation that table 2.2 uses
Label The CA cable assembly purposes Model Feature The core number
6 Main line between frame conm/4c Band high strength rubber hose sheath, two ends are the copper round plug 4
7 Power supply box output connects isolating coupler conm/4a Two ends are the copper round plug 4
8 Connect isolating coupler and place bracket controller conm/4c Band high strength rubber hose sheath, two ends are the copper round plug 4
9 Connect isolating coupler and adjacent stent controller conm/4c Band high strength rubber hose sheath, two ends are copper garden plug 4
10 Connect hydraulic vertical prop pressure sensor and bracket controller conm/4c Band high strength rubber hose sheath, two ends are the copper round plug 4
11 Connect and pass hydraulic jack stroke sensor and bracket controller conm/4c Band high strength rubber hose sheath, two ends are the copper round plug 4
12 Connect bracket controller and electromagnetic valve group in current conm/4ahz One end is the copper round plug, and the other end is the plastics square plug 4
Cable plug must block with the U-shaped pin after inserting socket, and the U-shaped pin has long 42mm (conm/4ske) and two kinds of specifications of long 72mm (conm/4skd is exclusively used in controller).
The socket that does not connect after cable or cable are extracted must be sealed up with the waterproof plug, and the plug type of circular socket is conm/4bl.

Claims (4)

  1. .1, a kind of down-hole coal excavation apparatus, comprising coal-winning machine (15), electric-hydraulic control low coal seam shield type hydraulic support, drag conveyor (14); Coal-winning machine (15) is a flitting, and coal-winning machine (15) is comprising cylinder, motor, coal-mining machine hydraulic system, coal miner spray dust falling system, left wheel, right gear; Electric-hydraulic control low coal seam shield type hydraulic support is comprising single-side stand (2), single-side stand (2) comprising: base (8), hydraulic vertical prop (10), front rod (11), back link (7), back timber (1), side guard board (4), caving shield (6), pass hydraulic jack (9), balance jack (5), thruster jack (3), be installed in support internal spraying system, electrohydraulic control system in back timber (1) inside wall; Hydraulic vertical prop (10), front rod (11), back link (7) and passing hydraulic jack (9) are installed in respectively on the base (8), connect back timber (1) and hinged with it on the piston rod of hydraulic vertical prop (10), front rod (11) and back link (7) are gone up hinged caving shield (6) respectively, the following respectively hinged base (8) of front rod (11) and back link (7), the rear portion of back timber (1) and caving shield (6) are hinged, thruster jack (3) is installed on the back timber (1), thruster jack (3) piston rod is fixedlyed connected with side guard board (4), balance jack (5) is installed on the caving shield (6), articulated roof beam (1) on balance jack (5) piston rod; Drag conveyor (14) is comprising head power set (14-1), tail power set (14-5), a plurality of chute (14-3), rack rails, and head power set (14-1) are provided with reducer, connect cover and motor; Chute is passed frame (14-6) comprising the chute on left ledge (14-4), right ledge (14-8), chute base plate (14-7), right ledge (14-8) right side; A plurality of chutes (14-3) distribute for front and back; The coal-winning machine right gear is positioned at drag conveyor (14) rack rails top and is engaged with, and the passing hydraulic jack piston rod in each single-side stand is connected with head power set, tail power set, a plurality of chute respectively; It is characterized in that: electrohydraulic control system is comprising bracket controller (12), electromagnetic valve group in current, hydraulic vertical prop pressure sensor, passing hydraulic jack stroke sensor, balance jack stroke sensor, thruster jack stroke sensor, the holding wire of hydraulic vertical prop pressure sensor and each jack stroke sensor respectively with corresponding connection of signal input part of bracket controller, the corresponding connection of liquid in-out connector of the fluid pressure line of hydraulic vertical prop hydraulic cylinder and each jack hydraulic cylinder and electromagnetic valve group in current; Bracket controller is electrically connected with electromagnetic valve group in current; Ledge (14-4) end, a left side, be extended with coal-winning machine left wheel track (14-2) left, and coal-winning machine left wheel track (14-2) is corresponding with left ledge (14-4) end and be an integral body; Coal-winning machine left wheel track (14-2) left bottom has a boss (14-11) that extends downwards; Left wheel is positioned at the top of coal-winning machine left wheel track in the coal-winning machine (15), and with it the roll connection corresponding with left wheel in the coal-winning machine (15) of coal-winning machine left wheel track; The chute on right ledge (14-8) right side is passed on the frame and is had the cable channel (14-9) that opening makes progress, and is fixedly connected with cable hook (14-12) on the right flank of cable channel (14-9) right side wall, and chute passing frame (14-6) is fixedlyed connected with cable channel (14-9).
  2. 2, down-hole coal excavation apparatus according to claim 1 is characterized in that: (2) six of described single-side stands are one group, and the described bracket controller (12) on the adjacent single-side stand (2) links to each other by trunk cable.
  3. 3, the described down-hole coal excavation apparatus of root a tree name claim 2 is characterized in that: described reducer is a planetary reduction gear; Described head power set (14-1) become to be arranged vertically with chute (14-3), and promptly head power set (14-1) are arranged in parallel about being.
  4. 4, the described down-hole coal excavation apparatus of root a tree name claim 3, it is characterized in that: chute connects by dumbbell pin (14-10) before and after in the described chute, ledge left surface middle part, a chute left side is connected by dumbbell pin (14-10) with ledge left surface middle part, a chute left side, back before each, and the right ledge right flank of chute middle part is connected by dumbbell pin (14-10) with the right ledge right flank of back chute middle part before each.
CN200710015155A 2007-07-20 2007-07-20 Down-hole coal excavation apparatus Expired - Fee Related CN100577984C (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN200710015155A CN100577984C (en) 2007-07-20 2007-07-20 Down-hole coal excavation apparatus

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CN100577984C true CN100577984C (en) 2010-01-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009032483B4 (en) * 2009-07-09 2017-01-12 Marco Systemanalyse Und Entwicklung Gmbh Control method and control device for carrying out the method
CN101885414A (en) * 2010-07-12 2010-11-17 三一重型装备有限公司 Scraper conveyor and pulling and moving mechanism thereof
CN101967990B (en) * 2010-10-20 2013-05-01 北京天地玛珂电液控制系统有限公司 Hydraulic support with excavating function
CN102777178B (en) * 2012-08-03 2015-01-07 江苏中机矿山设备有限公司 Manned bin of thin seam coal mining machine
CN102943684A (en) * 2012-12-04 2013-02-27 韩雪峰 Line paving method of coal mining bracket
CN107826620B (en) * 2017-09-25 2020-01-24 宁夏天地奔牛实业集团有限公司 Intelligent spraying cable trough with large mining height and spraying method thereof
CN113356914B (en) * 2021-07-20 2023-04-07 福州大学 Shield support for thin-layer inclined ore body mining support and construction method
CN114684563B (en) * 2022-03-16 2024-06-14 江苏徐矿能源股份有限公司张双楼煤矿 Coal conveying system for stope face without belt roadway

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