Tunnelling alternating expression suspension device
Technical field
The present invention relates to the suspension device of tunnel excavation operation in a kind of mining, a kind of means of mechanization and tunnelling alternating expression suspension device that fully-mechanized digging machine coordinating operation carries out on-the-spot immediate support of adopting particularly, be mainly used in, to the top board just having exposed of tunnelling operation and auxiliary lapping and the timely mechanization supporting of beating anchor pole etc., screening fully-mechanized digging machine in the certain area of tunnel, to realize continuous supporting operation.Belong to mining machinery manufacture and application.
Background technology
In the pit mining in current mining, especially colliery, the excavation operation in tunnel is the prerequisite of every other operation.Along with the comprehensive mechanized development machine generally use of (being called for short " fully-mechanized digging machine "), more traditional " drilling and blasting " operating type of efficiency of tunnelling has had large increase.But, affected by back ROCK CONDITIONS, the driving technique generally adopting is: while generally tunneling 1~2 meter, just shut down, with anchor pole, anchor cable or capplce etc., carry out artificial temporary lining, and then start is tunneled 1~2 meter, so cycle operation.This desultory cycle operation efficiency is very low, makes excavation operation cannot bring into play the advantage of fully-mechanized digging machine.Relevant data shows, even in, also less than 30% of fully-mechanized digging machine Homes Using TV during large coal mine underworkings driving, that is have and surpass time of 2/3rds all for artificial temporary lining.Its basic reason is exactly that existing tunnelling supporting means fall behind, and lack and can screen fully-mechanized digging machine normally to tunnel, and the safety means that simultaneously carry out temporary lining to tunneling the back of firm exposure.Tunnelling has become the bottleneck that a lot of coal mining enterprises of restriction produce, and according to home and abroad related data report, there is no at present the maturation application of these type of safety means or technology.Although China is since last century the nineties, also there is successively the scheme that some are devoted to address this problem, but no matter its design principle, or from application practice, all reflect that these schemes too theorize, far can not adapt to on-the-spot actual needs.
Existing excavation operation suspension device can roughly be divided three classes: the first kind is to do some change on existing development machine, temporary support device and fully-mechanized digging machine are integrated, reach the object of working continuously, if patent announcement number is CN2782932Y " combining pick meets head on to visit temporary support device before hydraulic pressure ", publication number be CN1987046A's " supporting type continuous tunnelling machine ", notification number be CN2204334Y's " a kind of front-probe support of tunneling working face ", publication number be CN101029570A's " advanced stand device of driving face ", notification number be CN200964858Y's " pick, protect, anchoring integral heading equipment " etc.The suspension device that these and fully-mechanized digging machine are fixed together, although solved to a certain extent walking problem, but the huge vibrations that fully-mechanized digging machine produces in tunneling process also will directly act on the back of institute's supporting by suspension device, accelerate it and destroy, the while is fixing also easily because vibration produces various faults with fully-mechanized digging machine cut rocking arm or fuselage; In addition, supporting area and the effective support space of this structure are little, can not realize the full section supporting to digging laneway, still will rely on intermittent manual work, have certain potential safety hazard.
Equations of The Second Kind is to adopt the capplce of parallel interval setting to add supporting leg (mostly being hydraulic prop), and mobile employing takes a step to move the structure of frame from moving or circulating: as patent announcement number be CN2133672Y " Provisional support for tunnelling face ", " temporary supporter for drifting flexible bar " that notification number is CN2142883Y, " Special hydraulic supporting rack for temporary supporting of digging head ", notification number that notification number is CN2189645Y be CN2851578Y " for the compressibile support of roadway head " etc.Above patent all belongs to the structure of employing " slippage " back timber, and the support of this structure is all applied in common fully mechanized workface as a kind of simple rack, for ore deposit, presses little, the better simply coal seam of geological conditions to have certain applicability.Conventionally by two back timbers that are arranged in juxtaposition, the auxiliary connection by side links together this structure side by side, under back timber, is connected with individual prop, and individual prop acts directly on base plate.The support of this form of structure relies on the advancing jack that is arranged between two back timbers arranged side by side or is positioned at back timber bottom, and push-and-pull back timber moves ahead mutually, but its movement must be carried out slippage by adjacent with it set cap or other transversing gears.The problem that these suspension devices mainly exist: the one, can not solve well the support stability problem while moving after frame supporting again; The 2nd, meet when tunnel rises and falls or base plate is softer, this class formation tends to move frame supporting difficulty, the problem of supporting leg " at the bottom of bundle "; The 3rd, cannot solve development machine immediate support problem foremost, the top board that is difficult to heading end just to expose carries out effective immediate support.
The 3rd class is the form of structure that adopts a plurality of unit racks, the grafting form that " for the hydraulic support of roadway head " that is CN100365244C as patent announcement number proposes, stable and supporting and the mobile advantage that provides for support, but the form of structure of this grafting, make support integral body wider, the layout that is unfavorable for fully-mechanized digging machine between frame, the two coordinating operation and walking are also subject to certain influence, and as described in this patent, permanent support still need carry out at the front end of support, does not fundamentally change the work pattern of fully-mechanized digging machine.And the technical scheme that patent announcement number is CN2890341Y " excavation hydraulic support " designs for solving " big gun pick " work plane, cannot carry out supporting operation with fully-mechanized digging machine.Patent announcement number is middle being spliced by a plurality of unit racks front and back of proposing of " necessary support frame before heading face " of CN1035025C, the form of structure that forms a whole set of support, attempt back and two to help to realize totally enclosed supporting, but find in actual applications, this supporting structure exists supporting and mobile stability cannot guarantee, the deficiencies such as installation in the narrow lane space in down-hole, dismounting and inconvenient maintenance.
Summary of the invention
The object of this invention is to provide a kind of tunnelling alternating expression suspension device, the supporting means that solved prior art existence fall behind, moving difficulty, need to shut down operation, the problems such as efficiency is low, its reasonable in design, supporting and mobile stable, handling and easy to maintenance, safe and reliable, the service condition that meets on-the-spot immediate support completely, meet preferably the requirement that underworkings supporting and fully-mechanized digging machine carry out supporting operation, realization has just exposed the timely mechanization supporting of top board to roadway head, can assist lapping and play the tunnel permanent support operations such as anchor pole, and screen fully-mechanized digging machine to realize and work continuously.Significantly improve supporting quality and the excavation operation efficiency of back.
The technical solution adopted in the present invention is: this tunnelling alternating expression suspension device comprises by bearing pin and is hinged on the hydraulic vertical prop that the conduct of crossbeam bottom supports and the roof beam structure being comprised of crossbeam and beam, its technical essential is: described roof beam structure comprises girder frame and auxiliary roof beam structure, girder frame is by main forward and backward crossbeam and the framework that links together and form with the forward and backward beam of the master who is hinged, and auxiliary roof beam structure is by auxiliary forward and backward crossbeam and the framework that links together and form with the auxiliary forward and backward beam being hinged, before auxiliary, the sidepiece of rear cross beam arranges the auxiliary anchor rod device of beating, beam front end and the front-axle beam member hinges of carrying out lapping work before the master of girder frame, and utilize the axis of the front beam assembly of the front-axle beam Driven by Hydraulic Cylinder being hinged between main front beam and front beam assembly jointed shaft of beam front end before main to rotate, the hinged frame hydraulic cylinder that moves between the main front beam of girder frame and the auxiliary rear cross beam of auxiliary roof beam structure, according to girder frame, the order of auxiliary roof beam structure, by connecting rod, will be hinged on respectively before master, rear cross beam and auxiliary before, the hydraulic vertical prop of rear cross beam bottom, one group links together between two, utilization moves frame hydraulic cylinder staggered girder frame or the auxiliary roof beam structure synchronizing moving of driving respectively.
The sidepiece of described auxiliary forward and backward crossbeam arranges the auxiliary anchor rod device of beating, the auxiliary slide rail of beating anchor rod device is fixedly connected with auxiliary front beam or auxiliary rear cross beam, the tailpiece of the piston rod that is hinged on the lifting hydraulic cylinder on slide rail is assembled with slide block, the connecting rod slew gear that is assembled with top roof-bolter is hinged on slide block, slide block under the drive of lifting hydraulic cylinder along slide rail lifting moving.
Be assembled in assisting of described auxiliary forward and backward crossbeam sidepiece and make the top roof-bolter on anchor rod device, along the length direction of connecting rod slew gear front link, move or jointed shaft around connecting rod slew gear middle part rotates, or the jointed shaft around slide block rotates with connecting rod slew gear monolithic linkage.
Side roof-bolter is set on the connecting rod of synchronization-moving described hydraulic vertical prop.
The two ends of the forward and backward crossbeam of described master and auxiliary forward and backward crossbeam arrange respectively side direction regulation mechanism.
Distinguishing feature and advantage that the present invention has are: because the present invention is the alternating expression supporting and protection structure that adopts group box to be configured to, by before master, rear cross beam and with the master who is hinged before, rear beam links together and forms girder frame, before auxiliary, rear cross beam and be hinged auxiliary before, rear beam links together and forms auxiliary roof beam structure, so its reasonable in design, supporting and mobile stable, in tunnelling process, support each other, by moving the mutual push-and-pull of frame hydraulic cylinder, walk, and guarantee leading, in the moving process of auxiliary roof beam structure, there is a framing all the time in connecing top state, realize the continuous support supporting to top board, significantly improve the supporting quality of back, eliminated the directly risk of high-risk operations under the top board exposing of traditional driving face workman.Because adopting the mechanization supporting of said structure and certainly moving mode, match with fully-mechanized digging machine or other excavation operation modes, handling and easy to maintenance, safe and reliable, when realizing sufficient intensity supporting, do not affect normal excavation operation.This and fully-mechanized digging machine be operating type independently mutually, can improve time and step pitch that fully-mechanized digging machine is once started shooting and tunneled continuously, by the partial circulating of original excavation operation, frequent exchange operation work post, change into long distance, systemic circulation, reduce different operations and replace time; And utilize the assisting of sidepiece setting of auxiliary forward and backward crossbeam to beat anchor rod device, the front beam assembly that is hinged on the front beam front end of master of girder frame carries out lapping work, can assist lapping and play the tunnel permanent support operations such as anchor pole, it is large that it adapts to angle excursion, flexibility is strong, driving face has been implemented to effectively leading temporary lining, and screened fully-mechanized digging machine to realize and work continuously.Therefore; problems such as the invention solves supporting means backwardness, moving difficulty that prior art exists, need to shut down operation, efficiency is low; the service condition that meets on-the-spot immediate support completely; meet preferably the requirement that underworkings supporting and fully-mechanized digging machine carry out supporting operation; realization has just exposed the timely mechanization supporting of top board to roadway head; avoid the carrying that repeats of apparatus for work, improved excavation operation efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of concrete structure schematic diagram of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is that Fig. 2 is along the sectional view of A-A line;
Fig. 4 is the local structure for amplifying schematic diagram of the side direction regulation mechanism in Fig. 3;
Fig. 5 is the auxiliary structure for amplifying schematic diagram of beating anchor rod device in Fig. 3;
Fig. 6 is the top view of Fig. 5.
Sequence number explanation in figure: 1 front beam assembly, 2 auxiliary front beams, 3 main front beams, 4 auxiliary front beams, 5 main front beams, 6 main after beams, 7 auxiliary rear beams, 8 auxiliary rear cross beams, 9 main rear cross beams, 10 front-axle beam hydraulic cylinders, 11 move frame hydraulic cylinder, 12 hydraulic vertical props, 13 connecting rods, 14 and help roof-bolter, 15 to assist to beat anchor rod device, 16 top roof-bolters, 17 side direction regulation mechanisms, 18 thruster hydraulic cylinders, 19 side plates, 20 connecting rod slew gears, 21 lifting hydraulic cylinders, 22 slide rails, 23 slide blocks, 24 roller of arranging net.
The specific embodiment
According to Fig. 1~6, describe concrete structure of the present invention in detail.This tunnelling alternating expression suspension device comprises by bearing pin and is hinged on the hydraulic vertical prop 12 that the conduct of crossbeam bottom supports and the parts such as roof beam structure that are comprised of a plurality of crossbeams and beam.Its middle beam frame comprises girder frame and auxiliary roof beam structure.Girder frame by main front beam 5, main rear cross beam 9 and with the master who is hinged before beam 3, main after beam 6 framework that links together and form.Auxiliary roof beam structure is by auxiliary front beam 2, auxiliary rear cross beam 8 and the framework that links together and form with the auxiliary front beam 4 being hinged, auxiliary rear beam 7.Sidepiece at auxiliary front beam 2, auxiliary rear cross beam 8 arranges the auxiliary anchor rod device 15 of beating, before the master of girder frame, beam 3 front ends are hinged with the front beam assembly 1 that carries out lapping work, and before utilizing the front-axle beam hydraulic cylinder 10 being hinged between main front beam 3 and front beam assembly 1 to drive, the axis of beam assembly 1 jointed shaft of beam 3 front ends before main rotates.The hinged frame hydraulic cylinder 11 that moves between the main front beam 5 of girder frame and the auxiliary rear cross beam 8 of auxiliary roof beam structure, according to the order of girder frame, auxiliary roof beam structure, by connecting rod 13, the hydraulic vertical prop 12 of the hydraulic vertical prop 12 of main front beam 5, main rear cross beam 9 bottoms and auxiliary front beam 2, auxiliary rear cross beam 8 bottoms will be hinged on respectively, one group links together between two, utilizes and moves frame hydraulic cylinder 11 staggered girder frame synchronizing moving or the auxiliary roof beam structure synchronizing moving that drives every group of hydraulic vertical prop 12 to support respectively.
In order can to assist better lapping and to play the tunnel permanent support operations such as anchor pole, at the sidepiece of auxiliary front beam 2, auxiliary rear cross beam 8, arrange to assist and beat anchor rod device 15.This auxiliary slide rail 22 of beating anchor rod device 15 is fixedly connected with auxiliary front beam 2 or auxiliary rear cross beam 8, the tailpiece of the piston rod that is hinged on the lifting hydraulic cylinder 21 on slide rail 22 is assembled with slide block 23, the connecting rod slew gear 20 that is assembled with top roof-bolter 16 is hinged on slide block 23, slide block 23 under the drive of lifting hydraulic cylinder 21 along slide rail 22 lifting moving.
Be assembled in assisting of auxiliary forward and backward crossbeam 2,8 sidepieces and make the top roof-bolter 16 on anchor rod device 15, can move along the length direction of connecting rod slew gear front link, can rotate around the jointed shaft at connecting rod slew gear 20 middle parts, also can rotate by the jointed shaft around slide block 23 with connecting rod slew gear 20 monolithic linkage.
Side roof-bolter 14 is set on the connecting rod 13 of synchronization-moving hydraulic vertical prop 12.
The two ends of main forward and backward crossbeam 5,9 and auxiliary forward and backward crossbeam 2,8 arrange respectively side direction regulation mechanism 17.
Because of on above-mentioned front beam assembly 1 and girder frame each main before beam 3 hinged, therefore can assist lapping operation.Connecting rod 13 connects respectively the hydraulic vertical prop 12 that supports auxiliary front beam 2 and auxiliary rear cross beam 8, and the hydraulic vertical prop 12 that supports main front beam 5 and main rear cross beam 9, make hydraulic vertical prop 12 form the form of a group between two by the order of main and auxiliary roof beam structure, utilization moves frame hydraulic cylinder 11 staggered girder frame synchronizing moving or the auxiliary roof beam structure synchronizing moving that drives every group of hydraulic vertical prop 12 to support respectively, to facilitate, moves frame.
In order to assist, play the operations such as anchor pole, improve digging laneway permanent support efficiency, by the auxiliary top roof-bolter 16 of making the connecting rod slew gear 20 on anchor rod device 15, installing of anchor pole carried out in a plurality of positions on back, and the lifting of connecting rod slew gear 20 and top roof-bolter 16 is realized by lifting hydraulic cylinder 21.The structure of depositing side roof-bolter 14 is set on connecting rod 13, while having avoided operation, helps roof-bolter 14 in the carrying that repeats of work plane.For what guarantee main and auxiliary roof beam structure, steadily move frame, the tuningout while moving forward by the thruster hydraulic cylinder 18 on side direction regulation mechanism 17 and 19 pairs of main and auxiliary roof beams structure of side plate.
Because the action of hydraulic vertical prop 12 and each hydraulic cylinder is to provide power by emulsion power pack, for ease of tunnel, arranges and simplify the operation, top roof-bolter 16 and help roof-bolter 14 also to adopt to take the mode that emulsion is power.
During this tunnelling alternating expression suspension device work, after both allocation illustrates that according to said structure connected mode and accompanying drawing mounting arrangements is good, acquiescence original state is that hydraulic vertical prop 12 rises, difference support girder frame and auxiliary roof beam structure, front-axle beam hydraulic cylinder 10, for stretching out state, moves frame hydraulic cylinder 11, lifting hydraulic cylinder 21 and thruster hydraulic cylinder 18 all in retracted state.Adjust hydraulic vertical prop 12 and make each beam and back connect reality, fully-mechanized digging machine sails in suspension device, starts to carry out tunnelling operation.
After fully-mechanized digging machine tunnels a segment distance, the hydraulic vertical prop 12 that withdrawal is connected with main rear cross beam 9 with main front beam 5, make whole girder frame be separated from (now auxiliary roof beam structure is still supporting top board) from top board, regain front-axle beam hydraulic cylinder 10, the net having joined is hung on front beam assembly 1 through the roller 24 of arranging net; Move frame hydraulic cylinder 11 and stretch out, promote whole girder frame reach, in reach process, stretch out front-axle beam hydraulic cylinder 10, to lift front beam assembly 1, to carry out automatic lapping operation; Move on to behind position, rise the hydraulic vertical prop 12 being connected with girder frame, make girder frame support top board.
Fully-mechanized digging machine continues, after driving one segment distance, to regain and auxiliary front beam 2 and the hydraulic vertical prop 12 that auxiliary rear cross beam 8 is connected, and makes whole auxiliary roof beam structure be separated from (now girder frame is still supporting top board) from top board; Move frame hydraulic cylinder 11 and regain, pull whole auxiliary roof beam structure to reach; Move on to behind position, rise the hydraulic vertical prop 12 being connected with auxiliary roof beam structure, make auxiliary roof beam structure and top board connect reality.
Repetition above-mentioned steps after tunneling several meters continuously retreats fully-mechanized digging machine, makes the top roof-bolter 16 on anchor rod device 15, and be installed in the side roof-bolter 14 on connecting rod 13 by being installed in to assist, and starts top board and roadway's sides to carry out permanent support; After permanent support operation is complete, fully-mechanized digging machine pulls belt and moves ahead, and prepares to carry out next operation cycle.