CN1027454C - Hydraulic tapping machine for blast furnace - Google Patents

Abstract

The present invention relates to a furnace device for opening an iron outlet of a blast furnace, which is mainly composed of a flush drilling mechanism, a propelling mechanism, a traverse moving mechanism, a boring mechanism, a poking mechanism, a rotary mechanism and an elevating mechanism, wherein the mechanisms all use hydraulic pressure as dynamic force. When holes are bored and opened, the propelling mechanism applies propelling force to increase boring capability and boring speed, and the furnace device is suitable for requirements of a modernized large-scale blast furnace. The present invention has the advantages of hydraulic transmission, high efficiency, strong capability, stable and reliable operation and mechanical structure simplification.

Description

Hydraulic tapping machine for blast furnace

The present invention is a kind of taphole drilling machine of opening blast furnace iron notch, belongs to iron-smelting blast furnace stokehold equipment.

The medium-sized or above blast furnace of China is extensive use of the electronic taphole drilling machine of suspension type at present.Its major equipment parts comprise: electric drill revolution crossbeam, advance and retreat trailer wagon, electric drill three parts.Electric drill is positioned at the crossbeam rear end when off working state, and drilling rod lifts in iron notch one side.During work, the electric drill position overlaps with the tap drain that taps a blast furnace, and advances with extension pulley when spudding in.Advantages such as the taphole drilling machine part of this kind form is few, and simple in structure and occupation of land is little.Because drilling rod medullary ray and advance to bore slideway not parallel pierces the inclination angle and changes the limit with piercing the degree of depth, the duct camber that gets out.Time bubble mud resistance increases to making stifled iron notch, fire door and furnace cylinder maintenance difficulty, particularly use no bubble mud to block up after, steep mud agglomerating part, can quality be hard, beat tapping outlet in good time, becomes a factor of blast-furnace smelting direct motion.Therefore, the taphole drilling machine that manufactures and designs excellent performance has become a vital task.

Domestic Baoshan Iron and Steel Company head factory has been introduced the pneumatic taphole drilling machine of Japan, and Anshan Iron and Steel Company introduced the pneumatic hydraulic opening machine of Germany, but the device structure complexity, huge, expense is high.

Chinese patent CN86200900U disclosed a kind of " difunctional iron perforater " be a kind of electronic-hydraulic opening machine.This taphole drilling machine has a bench drill car and one to disclose car, and they alternately move on "I"-shape rail beam, the operation of carrying out drilling and disclosing mouthful.Electronic drilling rod is housed on the drill carriage; Disclose car and adopt single motor oscillating mechanism, make and disclose dried straight line and charge and attack iron notch.With hydro-cylinder shared support is done perpendicular to the moving of beam-and-rail, to guarantee the central lines of drilling rod or tapping pin and iron mouth.This patent does not solve the deficiency of electronic taphole drilling machine, and motor is difficult to adapt to for a long time the operating condition of stokehold high temperature and many dust, burns easily.

The objective of the invention is to design a kind of all-hydraulic, compact construction, system is simple and reliable, easy to operate, is applicable to the stokehold production environment, leaves straight and the difunctional taphole drilling machine of zero draft cylindrical hole.

The present invention includes hydraulic pressure main transmission, hydraulic pressure accessory drive system, drill mechanism, propulsive mechanism, disclose holes mechanism, disclose into mechanism, transverse-moving mechanism, hoisting appliance and traversing mechanism.Consider that hydrostatic transmission has compact construction, the stable and reliable operation characteristics, drill mechanism is directly driven by hydraulic actuation power source and impacts and the commentaries on classics pricker.Propelling is with oil motor, chain, dolly transmission.When boring reaches certain depth, be converted to and disclose the hole, with protection drill mechanism.Disclosing the hole is to lean on the striking energy of oil motor, chain, the big quality system beater mechanism formation of dolly high-speed driving towards the tapping outlet remainder.Finish the conversion of boring and disclosing by traversing actuation mechanism, promote transversely-moving rack simultaneously, rely on cylindrical guide and stroke to guarantee accurate positioning with two sideslip oil cylinders.Complete machine is finished with revolution, hoisting appliance by stopping to forward the working position to.The revolution action is to use oil motor, gear mechanism to rotate pivoted arm, realizes one-time-reach-place aligning iron mouth by adjusting the location in advance.For minimizing takies the space, stokehold, realize the parallel translation process of lifting by hoisting appliance by parallel four connecting rods, forward taphole drilling machine to off-position.

All-hydraulic double-acting taphole drilling machine overall arrangement such as Fig. 1, Fig. 2.Oil motor 4 is by chain gear, promote drill mechanism 5 and realize advancing, dash that to carry out the perforate of iron mouth, drill mechanism with the effect simultaneously of boring be power by two hydro-pumps independently, directly driving, brill pricker 12 is produced simultaneously impact and the rotary drill comprehensive action, finish the function of punching.Drill bit near the hole at the bottom of the time, oil motor 4 is return drill mechanism rapidly, 11 actions of traversing cylinder, it is traversing along cylindrical guide to promote transversely-moving rack.Can carry out straight line behind the bit alignment of hole and disclose the hole.Oil motor 10 promotes at a high speed to disclose holes mechanism 6 by corresponding chain gear, and tapping pin 13 is towards the tapping outlet remainder.After beating tapping outlet, disclose holes mechanism 6 and return at a high speed, stop to the limit position braking.Promptly realize whole working process of perforate to this, because the iron mouth of getting with the present invention is a cylindrical bore, iron level flows slowly out.For making iron perforater return to off-position rapidly, oil cylinder 3 and oil motor 7 move simultaneously, promote curved bar 2, rise mainframe 1 by push and pull system: drive turret wall 9 by gear, gear ring and rotate, parallel four connecting rods 8 move simultaneously, and mainframe 1 is when rotating along with pivoted arm, around hanging the center rotation, parallel translational movement, the pivoted arm of realizing mainframe 1 can change 120 degree, can all withdraw from the operating space of stokehold, and make hydraulicefficiency pipeline obtain protection.After forwarding off-position to, pin voluntarily, make mainframe 1 be fastened on secure location by pressure reduction (fluid power, gravity) locking mechanism 14.When the perforate of working position, with spring return formula oil cylinder 15 control anchor iron, pin traversing mechanism, in the right direction stable to guarantee perforate.Each topworks realizes easy operation remote, directly perceived by the control of plate type hydraulic consing.

Hydraulic thrust booring machine structure 5 comprises beater mechanism Fig. 3, rotating drill rod mechanism Fig. 4 and casing;

Propulsive mechanism Fig. 6 comprises propelling oil motor 4, sprocket wheel 23,24, chain 25, advances dolly 26, advances frame 27, anti-tilt device 28, guided bearing device 29, chain stretching device 30 and spacing snubber assembly 32;

Disclose holes mechanism 6 and comprise ram hammer 37, card pricker device 39 and tapping pin 38;

Disclosing holes mechanism 6 comprises and discloses oil-feed motor 11, sprocket wheel 22,63, chain 64, discloses into dolly 65, discloses into frame 44, anti-tilt device 67, guided bearing device 29, chain stretching device 69 and spacing snubber assembly 68;

Transverse-moving mechanism Figure 11 comprises sideslip oil cylinder 10, anchor 41, transversely-moving rack 42, cylindrical guide 43 and locating device 45;

Hoisting appliance Figure 13 comprises hoist cylinder 49, curved bar 50, hangs parallel four connecting rods 51, transfers inclination angle mechanism 54, pressure reduction locking latches 52 and locating device;

Traversing mechanism Figure 16, Figure 17 comprise pivoted arm 9, bearing column 59, rotary motor oil 7, gear 60, gear ring 61, parallel four connecting rods 8 and spring return formula oil cylinder location antijoyride device.

Drill mechanism is the on-line operation mechanism of tapping outlet.As shown in Figure 3, mainly hitting device by hydraulical impact mechanism, rotating drill rod mechanism, air defense is formed.Its major part of beater mechanism is piston 16, flat valve 17, energy storage equipment 18.Piston is the vital part of work done, be segmentation, the small stair battledore, form the principle of work of T-valve control differential motion piston, as can be seen from Figure 3, the ante-chamber of piston and flat valve is a normal pressure oil, back cavity is that oil return replaces with pressing oil, flat valve is when right end position, the piston back cavity communicates with oil return, piston is pressed under the oil effect at ante-chamber and is done return movement, this moment, the flat valve right-hand member communicated with oil return, when return piston stroke makes telltale hole a and presses oil phase logical, the flat valve right-hand member feeds pressure oil and carries out the backhaul commutation, flat valve under differential action to left lateral, make the disconnection oil return of piston back cavity and connect pressure oil, but piston is owing to inertia continues backward, owing to be subjected to the pressure oil reactive force on the piston back cavity big area, slow down rapidly and brake, until the backhaul terminal point, the reactive force of back cavity is much larger than ante-chamber, make piston then do stroke movement, impact the bit shank work done, when travel of piston was crossed telltale hole b, the flat valve right-hand member communicated and moves to right with oil return, get ready for return piston stroke again, so circulation realizes that external work done campaign is more than, the external work done of piston impact bit shank when having only stroke, and not externally work done of backhaul, so high pressure air pressing type barrier film energy storage equipment is set, make the kinetic energy of backhaul be converted into the pressure energy, when stroke, be converted into useful work again, to improve energy utilization efficiency.When impacting work done, change the pricker drilling.Rotating drill rod mechanism is to be used for rotating drill steel, drill bit and the drill steel of unloading as shown in Figure 4, adopts oil motor 19 by gear pair 20, drives bit shank 21 and independently rotatablely moves.Impact and drilling sector are combined into one, with the comprehensive function that realizes dashing and boring.

The process of beating tapping outlet is to impact, the bore mode that drilling is carried out simultaneously, when having the piston impact bit shank of certain momentum, iron mouth bubble mud is produced stress under compression and strain, and with the velocity of wave transmission, the time compole of impact loading is short, the crack that bubble mud is formed has little time expansion, and the part that forms the stemming surface is broken, at the bottom of bubble mud hole, form I-I groove, as shown in Figure 5, before impacting for the second time, drill bit turns over an angle B, make and impact the groove that forms another location II-II for the second time, drill bit shreds the bubble mud of sectorial area in the B angle simultaneously, so continuously impacts and drilling, and in time discharges the mud powder, just make iron interruption-forming straight path, the iron notch duct of cylinder hole shape.

Mouthful machine of beating that the surges following characteristics of comparing with air operated: (1) total efficiency improves 2 times, and energy expenditure is low, is pneumatic 1/3-1/4 with magnitude; (2) frequency of impact is enhanced about more than once; (3) ballistic work of identical peak stress significantly improves; (4) punching speed improves 2-3 doubly; (5) conformability is good, changes the hydrostatic control parameter, just can change output rating, adapting to different performance, and the tapping outlet requirement of different range, this is that the pneumatic mouth machine of beating is not accomplished.

The effect of propulsive mechanism is to finish the action that advances and return drill mechanism, when drill drill bit is applied enough thrust, makes the drill bit iron notch that advances out continuously.

The present invention adopts oil motor-chain-type propulsive mechanism, as shown in Figure 6, mainly formed by oil motor 22, drive sprocket 23, jockey sprocket 24, chain 25, propelling dolly 26, propelling frame 27, anti-tilt device 28, guided bearing device 29, chain stretching device 30, guide rail 31, spacing snubber assembly 32.Oil motor relies on that independently oil pump and Controlling System realize that running, drive sprocket, chain traction advance dolly, along advancing the frame moving linearly, drill mechanism is installed in and advances on the dolly, makes drill bit obtain propulsive force, the duct of getting the linear cylindrical hole shape smoothly.The telescopic roller chain of chain strip adoption, four wheels of propelling dolly, a pair of is that rigidity is fastened on the dolly base, and another is to being that cross bearing pin 33 is hinged on the hinged plate 34 of dolly base, and as shown in Figure 7, but self-adaptation is transposed.Drill mechanism is connected 36 and is fixed on the dolly boatswain chair with hanging with bolt 35, as shown in Figure 8, makes it become a rigid body with dolly, vibration during drill can be absorbed by frame, advancing frame is the stronger framework of rigidity, and certain rectilinearity requirement is arranged, and realizes straight-line trajectory.There is the anti-steamboat that fascinates at the dolly rear, spacing up and down when guaranteeing moving of car, and the anti-steamboat that fascinates is installed on the dolly base, as shown in Figure 9 by stationary spindle.There is the guide rail of certain-length at dolly base middle part, and the left and right sides during the control trolley travelling is spacing; Promoting frame the place ahead has the guided bearing device, bears the spacing of the deadweight of drill steel and rotation, realizes the multielement gap constraint of anti-dumping, guide rail, guiding, rigidity straight line frame, guarantees propulsive straight-line trajectory.Chain stretching device is a threaded adjusting, in the rear end that advances frame.Realize the dismounting of chain and the sag of adjustment chain, make the chain stable and reliable operation.But chain-regulating wheel is contained on the mandrel, and the mandrel two ends can be along advancing the guide path straight line on the frame to move.Spacing snubber assembly is in the front and back end that advances frame, with alleviate advance and when returning to the collision of frame.

Oil motor can realize that by the control of hydraulic efficiency system suitable speed advances, returns fast, to satisfy the blast furnace production requirement.With high-power, high-frequency impact and drilling and propulsive combined action, make comprehensive opening powerful in function strong, be basic characteristics of the present invention.The rotating speed of ballistic frequency and drilling, take optimum matching point according to bubble mud character: the drill bit due impact number of times that whenever circles is 8-12 time, and propulsive force Optimum Matching value is between the 600-1000 kilogram.If the axle thrust deficiency will be moved after the travel of piston motion will make cylinder body under reactive force.Drill bit will can't push up at the bottom of the iron oral pore, energy just transmits less than at the bottom of the hole, enough axle thrusts must be arranged, drill bit is closely contacted all the time with at the bottom of the hole, target efficiency obtains all performances, but axle thrust is excessive, make again to change and bore the moment of resistance increase, cause the drill steel bending, reduce punching speed on the contrary, therefore must take optimum axle thrust according to the reality of iron mouth bubble mud.Can carry out the adjustment of parameter, be the key that adopts the comprehensive function tapping outlet.

Disclose holes mechanism as shown in figure 10, formed by ram hammer 37, tapping pin 38, kelly device 39 and with the identical transmission rig of propulsive mechanism, mechanism all is installed on the mainframe propulsive mechanism with disclosing into, only each has the orbit of oneself.The prerequisite that the hole is disclosed in realization is that the iron mouth pore passage that gets out in advance must be a straight path, and cylindrical pass makes tapping pin that beeline channel be arranged.Ram hammer is according to the actual nature design at high temperature of Tie Kou depths bubble mud, ram hammer is with clip 40 and be bolted to and disclose on the dolly, also becoming a rigid body, ram hammer front end has the kelly device of fast quick change tapping pin, utilize eccentric disk to compress tapping pin, have handgrip to be convenient to quick replacing on the eccentric disk, tapping pin adopts water gas pipe, suitably select its size such as 25-37mm, reach the rigidity requirement when disclosing the hole, disclose that into mechanism and propulsive mechanism are identical, no longer repeat.

The effect of transverse-moving mechanism is to realize by drill to the throw-over gear of disclosing the hole.As Figure 11, formed by anchor 41, transversely-moving rack 42, cylindrical guide 43, sideslip oil cylinder 44, traversing allocation 45.Anchor is a rectangular frame, be fixed on by link span on the vertical shaft of rotatable certain angle, the upper end of vertical shaft is a tapered shaft end, centering is good, transmitting moment of torsion by hanging deadweight, two cylindrical guides that are parallel to each other are housed in the fixed frame, is with clamp, bolt, the guide rail anti-rotation groove is fixed on the anchor, and guide rail must be parallel to each other in vertical surface, horizontal plane after installing; Transversely-moving rack also is a quadra, be assemblied on the cylindrical guide, orienting sleeve is fixing on the side bar of transversely-moving rack, transversely-moving rack promotes with two oil cylinders, rely on the guiding of cylindrical guide and the synchronization loop of hydraulic efficiency system, parallel the moving that guarantees transversely-moving rack there is no creeping phenomenon, oil cylinder one end with earrings, bearing pin be hinged on the anchor, the other end is hinged on the transversely-moving rack; Traversing locating device can guarantee to bore, disclose and accurately align the iron mouth when changing, mechanism all is contained on the same frame because propulsive mechanism is with disclosing into, making bit central, tapping pin center is contour in vertical direction, the traversing stroke of horizontal direction is exactly the width between centers A of two bars, as long as accurately control the A value, the transversely-moving rack transposition is exactly correct, and the iron mouth can align errorless.The A value is adjusted realization by the locating device on the anchor such as Figure 12, traversing stroke is designed to be a bit larger tham the A value, after the adjustment stop means is fixed, stop means is to be fixed on the anchor with buting iron seat 46, the screw 47 of adjustment is arranged on the buting iron seat, change the extrusion of screw by the adjustment of both sides nut 48, make the A value obtain accurate the adjustment, on the buting iron seat of location, electric travel switch is housed also, what link with it is combined aural and visual alarm, be installed on the hydraulically operated platform, during traversing putting in place, the operator can stop traversing according to warning, and hydraulic efficiency system unloading simultaneously transfers dry running to, to guarantee the safety of motive position, traversing transposition form accurate positioning of the present invention, the operation balance, frame rigidity is strong, repeat transposition and do not have drift.Adopt the cylinder pushes hydraulic efficiency system to lock voluntarily, invariant position when working to protect tapping outlet.Transposition is accurate, the location is reliable, and simple and easy to do is the indispensable performance of transverse-moving mechanism.

Hoisting appliance is used for realizing advancing the resultant movement of reach of moving, descend after the lifting of frame.Hoisting appliance such as Figure 13, by hoist cylinder 49, curved bar 50, hang connecting rod 51, pressure reduction locking latches 52, spacing buting iron 53, adjusting angle mechanism 54 and formed.Curved bar one end is hinged on the transversely-moving rack front end axis pin base with bearing pin, constitutes the swing fulcrum, and the other end is hinged on the middle part of hanging connecting rod, can drive to hang link work, makes to advance the frame lifting and move forward and backward, and the middle part of curved bar is then hinged with the hoist cylinder piston rod.The oil cylinder afterbody is hinged on the transversely-moving rack column; The structural shape of curved bar depends on the steric requirements of whole leverage movement locus and permission, and can bear very big pushing torque, all hinges point all adopts grease cup, oilhole, oil-bath lubrication, to prolong the hinge life-span, each bearing pin is fixed with clamp and is formed heart hinge, and it is steady to reach the promotion gantry motion.

The frame of adjusting obliquity structure being arranged as shown in figure 14 at the middle part of hanging connecting rod, can adapt to the angle modulation scope of 6-15 degree, is the mechanism of uniqueness of the present invention; Make triangulation tooth bar formula snapping at the suspension rod connecting portion, the front and back suspension rod makes two sections 55,56 respectively, middle with flat axle bolt 57 connections, the interlocking of nipping mutually of the trilateral tooth of two sections suspension rod ends makes two sections suspension rods connect into a rigid hanger after tighting a bolt.Connecting the position when making its swing does not relatively move, tooth bar coupled position can be adjusted simultaneously, thereby changes the total length of suspension rod, just can change the inclination angle that advances frame, consistent with the Tie Kou inclination angle and coaxial, unclamp attachment bolt, change tooth bar snapping position, tight a bolt again and can adjust angle, the present invention is designed to every tooth angle modulation 0.27 degree, after the angle modulation, do not produce any angle drift in the motion, overcome the shortcoming of threaded adjusting mode.

Be provided with lifting limited device as shown in figure 15 in the transversely-moving rack rearward end, its effect has two, and one is pinned when being the complete machine off-position and advances frame, the change in location that makes it not conduct oneself with dignity and cause; Another is to rise spacing in order to avoid leverage is crossed the dead point or collided anchor; Utilize the effect of hydraulic coupling and gravitational difference, do not establish propulsion source in addition and can realize locking and unlocking action with operation, locking force is produced by spring 58, adjusts locking force greater than the component of hanging gravity, and, overcome action of gravity during off-position and lock less than lifting hydraulic drive power; Locking force was made every effort to overcome to obey by hydraulic drive and is unblanked to descend when work descended.

Hoisting appliance all is installed on the transversely-moving rack, with the needs that adapt to brill, move when disclosing transposition thereupon.

Traversing mechanism is made up of pivoted arm 9, oil motor 7, gear 60, gear ring 61, parallel four-bar linkage 8, anchor iron-spring return formula oil cylinder 15 as shown in Figure 2.Pivoted arm is the socle girder of box-structure, end above column adopts center of turning circle a that thrust bearing entad and vertical axle constitute pivoted arm as shown in figure 16, an end of hanging at pivoted arm, same Z-axis structure is arranged, constitute hang part from center of turning circle d, hang part both with pivoted arm revolution, again can be under the effect of parallel four connecting rods self deflection, to realize advancing the parallel translational movement of frame; Parallel four connecting rods are to be a bar with pivoted arm ad, shake to do to be bc, and connecting rod is cd, fixed link ab is the point of two on the rotary table, is fixed by wall screw by vertical rod, and make up with positive left-hand thread, setting nut 62 at the two ends of rocking bar bc, can adjust rocking bar length, make parallel translational movement steady, track is correct.

Oil motor is by the supporting base of self, the rear end that is fixed on pivoted arm as shown in figure 17, the oil motor output shaft is equipped with gear 60, with gear ring 61 engagements that are fixed on the column, gear ring does not change, and the gear on the oil motor forms the turnover motion on gear ring, the revolution of drive pivoted arm, between working position and off-position, can change 120 degree, with the needs of abundant adaptation change in location.

The reliable location of traversing mechanism is a key of guaranteeing that the tapping outlet straight path is in the right direction.Adopted definitely position of anchor, pinned traversing mechanism during work, unblanked with the revolution interlock when resetting, adopted a manual valve to control two actions simultaneously, in time reliable, structure is all simple with operation.

The present invention is an all-hydraulic transmission

The realization of each body function is all by HYDRAULIC CONTROL SYSTEM; Hydraulic efficiency system is made up of the two parts, i.e. perforate Controlling System and hole level controlling system.

The hydraulic pressure main transmission, be the perforate hydraulic control system, to realize impact, drilling and propulsive synchronous coupling control, system comprises four table oil pumps, wherein one is emergency bearing oil pump, one is the special-purpose oil pump of percussion action, one bench drill is cut (commentaries on classics pricker) and the lifting of holding concurrently replaces shared oil pump, one for advance and hold concurrently traversing, disclose into, turn round and replace shared oil pump, dispose corresponding three hydraulic control circuits independently, be respectively and impact control loop (Figure 18), drilling control loop (Figure 19) and propelling control loop (Figure 20).

The hydraulic pressure accessory drive system, be position, hole hydraulic control system, be the actuation cycle control that realizes that the control position is orderly, system comprises revolution control loop (Figure 23), lifting control loop (with 21), traversing control loop (Figure 22) and disclose into control loop (Figure 20).

Impact system as shown in figure 18, the oil pump oil extraction is to manually operated directional valve, presses oil to enter piston cylinder ante-chamber and flat valve left end simultaneously, percussion action begins, oil return is formed an open-cycle system directly to fuel tank, and this is by impacting the principle of work decision, when having only oil return not have any interference, impact piston ability works better, beater mechanism requires hydraulic efficiency oil extremely to clean, and any dirt all can influence the performance of mechanism's work, even can not work, so the oil pump oil discharge outlet has smart purolator; Oil pump is an axial piston hand adjustment variable volume pump, the independent drive beater mechanism changes the pressure and the flow of impact system, can obtain the percussion power of tapping outlet institute actual needs, with rated pressure work is full performance hit, and downward modulation in various degree then is light impact in various degree.Hydraulic impact mechanism belongs to the principle of static pressure transmission valve control piston substantially, and the Sportswear of impact piston is from the rule of liquid motion and mechanical movement, and analyzes ballistic principle of work thus.The adjustment of beater mechanism output rating and striking energy has adapted to the requirement of drill tapping outlet.

Change the pricker system as shown in figure 19, the oil pump oil extraction enters oil motor through manually operated directional valve and forms commentaries on classics pricker loop, in the drill perforate process, impact with the commentaries on classics pricker and mate work simultaneously, both independently finish again separately, and therefore changeing the pricker system must have independently pump power source and Controlling System, change the rotating speed that flow can change oil motor, realize and ballistic coupling, reach most effective; Change system pressure and can obtain needed torque, to adapt to the actual nature of iron mouth bubble mud.

Propulsion system as shown in figure 20, drag with oil motor, the oil pump oil extraction enters oil motor through manually operated directional valve, and one-way throttle valve can be adjusted and advance and the friction-motion speed of moving back brill, the suitable speed of realization high thrust (1.2-1.8 rice/minute) advance, (1.0-1.5 meter per second) moves back brill fast.It is the prerequisite performance of iron mouth perforate that drill bit is return rapidly, takes place and change over to fast to disclose the hole to avoid accident.

Propulsive force during perforate must suitably by surplus valve Adjustment System pressure, can adapt to the propulsive force of different iron mouth bubble mud character, has both reached perforate efficient height, does not damage drill steel and drill bit again.Because impact, drilling and propelling are to work simultaneously, propulsion system is still independently.

Practice of the present invention and analysis are as can be known, the flat valve commutation makes reciprocating motion of the pistons, the travel of piston feedback is controlled the commutation of flat valve again, the motion of piston and flat valve connects each other, mutual restriction again, form an integral body that moves back and forth automatically, the requirement flat valve commutates fast and works under the standard-sized sheet mouth, must cause the rapid variation of flow and pressure, so that influence the motion of piston, and whether piston motion normally is exactly whether impact work is normal, and any variation of visible hydraulic efficiency system must influence the realization of drill function.The present invention has confirmed this point from test and practice, hydraulic efficiency system is far from it can not.

Jacking system as shown in figure 21, up-and-down movement is to make to advance the frame lifting, must quit work at drill and propelling, drilling rod, tapping pin just allow up-and-down movement behind tapping outlet.Since lifting with change that pricker is non-works simultaneously, its power can be with to change pricker shared.Hydraulic lock in the system is for fear of the influence of drill, power bounce-back generation when advancing out and the influence that elimination causes boring direction, when off-position, the frame of rise is pinned, and prevents the downslide of leaking because of manual valve.

Crossing system such as Figure 22, by the requirements of one's work consideration simultaneously of two oil cylinders, the propelling frame that transversely-moving rack is hung below is an elongate frame, structure is long, for making its motion steady, adopted the two oil cylinders of minor diameter to promote, do not work simultaneously with propelling owing to traversing, propulsion source jointly, the oil pump oil extraction enters sideslip oil cylinder through manually operated directional valve, and shorter because of traversing stroke, there is strict liner in mechanism, system has adopted simple and easy synchronization loop, is reached by two one-way throttle valves to be synchronized with the movement.

The pivoted arm turning motion is driven by oil motor, from the pressure oil of propulsion system oil pump, through manually operated directional valve, enters oil motor by one-way throttle valve, hydraulic lock, snubber, and driven gear, gear ring transmission realize the turning motion of complete machine.One-way throttle valve is symmetrical arranged on positive and negative loop, needs with the friction-motion speed of adjusting on the both direction.On positive and negative oil circuit, be symmetrical arranged hydraulic lock, guarantee that stablizing of perforate when work complete machine position is constant, for further locking car reliably, be aided with mechanical lock,, make it when perforate is worked, be locked in a side of mooring anchor iron with spring return formula single acting oil cylinder control anchor iron, spring return formula single acting oil cylinder is in parallel with the rotary motor oil loop and with the control of manual valve, just move when only resetting revolution and mention anchor iron, provide the revolution reset condition, because complete machine rotating part quality is big; When manual valve is changed to meta, oil motor will be rotated further the generation hydraulicefficiency impact, influence the works better of hydraulic efficiency system, check valve is arranged in the loop, and the snubber that surplus valve is formed makes the cushion chamber substantially constant that keep-ups pressure, deceleration buffers such as realization, when the complete machine revolution reset to limit position in addition, the bump buting iron stopped often to be ahead of the transposition of manual valve suddenly, and snubber assembly also can play shock absorption.

Disclose the impact mass of holes mechanism self and determine, the striking energy when disclosing the hole depends on discloses the into appropriateness of speed, adjusts Controlling System pressure by surplus valve, both reaches smoothly towards tapping outlet, does not make the tapping pin bending again.

Layout and the protection of hydraulicefficiency pipeline on main frame, be that blast furnace open hole machine adopts the liquid-operated essential condition, casthouse equipment is at first use at home with the tapping outlet that surges, also more rare abroad, certain reason is still arranged, the more pneumatic characteristics that have it to give prominence to although surge, but the high-temperature service condition of blast-furnace smelting production decision, and the danger of stokehold kindling material, it is much unfavorable that the working conditions of surging is brought, it is considered herein that and select its heavy many advantages that to mend, the measure of needing only definitely reliably just can be used fully to its defective with usefulness.To Hydraulic Elements and pipeline, take the reliable measure of sheltering and protecting, as arranging steel pipe as far as possible, as long as connect sebific duct near the hinged place, and with metallic snakeskin pipe protection, the sebific duct long for stroke, that caliber is thick, bending radius is big can adopt track type sebific duct drag chain, the servo-actuated sebific duct is installed and is added thin plate and shelter, both solve the pipeline random motion, solved protection question again perfectly.

Major advantage of the present invention:

1. all-hydraulic transmission power is big, efficient is high, and adaptability is strong, changes coefficient of combination and can change serviceability, and is simple to operate, can realize remote manipulation.

2. impact, drilling and advance separately independent drive, independent control could realize works better and best effective the coupling.

3. hydraulic pressure advances any speed governing that can realize in the rev limit scope, makes to advance suitable speed, moves back brill rapidly to adapt to the blast furnace production requirement.

4. the pressure ratio of hydraulic power is pneumatic high tens times, the frequency of impact height, and impact energy is big, and penetration rate is fast, and noise is low.

5. the iron mouth pore passage of leaving is a straight line, and cylindrical bore flows slowly out iron level, is beneficial to the blast-furnace smelting direct motion.

6. bore, disclose difunctional, accurate to the position, hole, simple in structure easy to operate, do not have and manually change bar or the bar number of times is changed in minimizing.

The embodiment of the invention:

At the significant parameter of having put into operation of the present invention be:

Hydraulic efficiency system: beater mechanism striking energy 250NM, drilling torque 540NM advances oil motor 40.8KW, rotary motor oil 97KW, hoist cylinder 110/80, sideslip oil cylinder 50/36, the valve member latus rectum 32mm of system, variable volume pump 160ml/r, electric motor 55KW, fuel tank 2.5-3M＞.

Electrical system: automatic air closes 380V, 600A main contactor 150A.

Main components is: 16-18 channel-section steel, pivoted arm are 400*400mm cross section box type construction.

On blast furnace, produce on probation, obtained desired result, penetration rate reach 1.8-2.5 rice/minute, move back fast to bore and realized that 1.0-1.5 meter per second, bit diameter are 50mm, the aperture can reach 55-60mm, be round, the straight path of rule, the duct zero draft, the direction skew is not more than 5mm on 2M length, iron level current stabilization speed obtains average 5 tons/minute advanced level.

Through follow-on design, the boring stroke is 2.8 meters to 3.5 meters, can be general in big-and-middle-sized blast furnace, and the complete machine total height only is 1.6 meters, more meets the requirement of blast furnace production to casthouse equipment.

Description of drawings

The overall facade layout diagram of Fig. 1 full hydraulic iron notch drill

Fig. 2 full hydraulic iron notch drill general plane layout diagram

Fig. 3 impact mill composition

Fig. 4 rotating drill rod mechanism figure

Fig. 5 schematic diagram of holing

Fig. 6 pusher composition

Fig. 7 articulator wheel shaft structure figure

Fig. 8 drill mechanism installation plan

Fig. 9 anti-tilt device figure

Figure 10 discloses into mechanism's installation plan

Figure 11 transverse-moving mechanism composition diagram

Figure 12 locating device figure

Figure 13 hoisting appliance composition diagram

Figure 14 transfers the inclination angle mechanism map

Figure 15 pressure reduction locking setting drawing

Figure 16 tumbler connecting rod schematic diagram

Figure 17 turns round transmission diagram

Figure 18 impacts hydraulic circuit diagram

Figure 19 changes the pricker hydraulic circuit diagram

Figure 20 advancing hydraulic pressure loop diagram

Figure 21 lifting hydraulic circuit diagram

The traversing hydraulic circuit diagram of Figure 22

Figure 23 turns round hydraulic circuit diagram

Wherein

1, mainframe

2, curved bar

3, hoist cylinder

4, advance oil motor

5, drill mechanism

6, disclose holes mechanism

7, rotary motor oil

8, parallel four connecting rods

9, pivoted arm

10, sideslip oil cylinder

11, disclose the oil-feed motor

12, bore pricker

13, tapping pin

14, locking mechanism

15, spring return formula oil cylinder

16, impact piston

17, flat valve

18, energy storage equipment

19, drill rotaring oil motor

20, gear pair

21, bit shank

22, drive sprocket (propelling)

23, drive sprocket (propelling)

24, jockey sprocket (propelling)

25, chain (propelling)

26, advance dolly

27, advance frame

28, anti-tilt device (propelling)

29, guided bearing device (shared)

30, chain stretching device (propelling)

31, guide rail (propelling)

32, spacing snubber assembly (propelling)

33, bearing pin

34, hinged plate

35, attachment bolt

36, hang connection

37, ram hammer

38, tapping pin

39, kelly device

40, clip

41, anchor

42, transversely-moving rack

43, cylindrical guide

44, disclose into frame

45, locating device

46, buting iron seat

47, adjust screw

48, nut

49, hoist cylinder

50, curved bar

51, hang parallel four connecting rods

52, pressure reduction locking latches

53, buting iron

54, transfer inclination angle mechanism

55, upper hanger

56, following suspension rod

57, flat axle bolt

58, spring

59, bearing column

60, gear

61, gear ring

62, setting nut

63, jockey sprocket (disclosing into)

64, chain (disclosing into)

65, disclose into dolly

66, guide rail

67, anti-tilt device (disclosing into)

68, spacing snubber assembly (disclosing into)

69, chain stretching device (disclosing into)

Claims (6)

1, a kind of hydraulic opening machine of opening blast furnace iron notch, complete machine comprises the hydraulic pressure main transmission, hydraulic pressure accessory drive system, drill mechanism, propulsive mechanism, discloses holes mechanism, discloses the into traversing mechanism of mechanism, transverse-moving mechanism, hoisting appliance, it is characterized in that:

The hydraulic pressure master passes system, it is the perforate hydraulic control system, to realize impact, drilling and propulsive synchronous coupling control, system comprises four table oil pumps, and wherein one is emergency bearing oil pump, and one is the special-purpose oil pump of percussion action, one is promptly changeed the also double lifting of pricker for drilling and replaces shared oil pump, one for advance and hold concurrently traversing, disclose into, turn round and replace shared oil pump, dispose corresponding three hydraulic control circuits independently, be respectively the propelling control loop of impact control loop drilling control loop.

The hydraulic pressure accessory drive system, i.e. position, hole hydraulic control system is the actuation cycle control that realizes that the control position is orderly, system comprises the revolution control loop, lifting control loop, traversing control loop and disclose into control loop.

Hydraulic thrust booring machine structure (5) comprises beater mechanism, rotating drill rod mechanism and casing.

Propulsive mechanism comprises propelling oil motor (4), sprocket wheel (23) (24), chain (25), advances dolly (26), advances frame (27), anti-tilt device (28), guided bearing device (29), chain stretching device (30) and spacing snubber assembly (32).

Transverse-moving mechanism comprises sideslip oil cylinder (10), anchor (41), transversely-moving rack (42), cylindrical guide (43) and locating device (45);

Disclose holes mechanism (6) and comprise ram hammer (37), card pricker device (39) and tapping pin (38).

Disclose into mechanism and comprise and disclose oil-feed motor (11), sprocket wheel (22), (63) chain (64), disclose into dolly (65), disclose into frame (44), anti-tilt device (67), guided bearing device (29), chain stretching device (69) and spacing snubber assembly (68);

Hoisting appliance comprises hoist cylinder (49), curved bar (50), hangs parallel four connecting rods (51), transfers inclination angle mechanism (54), pressure reduction locking latches (52) and locating device;

Traversing mechanism comprises pivoted arm (9), bearing column (59), rotary motor oil (7), gear (60), gear ring (61), parallel four connecting rods (8) and spring return formula oil cylinder location antijoyride device.

2, hydraulic tapping machine for blast furnace according to claim 1, it is characterized in that: drill mechanism also comprises impact piston (16), flat valve (17), energy storage equipment (18), drill rotaring oil motor (19), gear pair (20), bit shank (21), bores pricker (12), be assembled in be integral on the casing after, with attachment bolt (35), hanging connection (36) is fixed on the propelling dolly (26), the brill pricker is a hollow stem, and segmentation is connected to needed length with the corrugated thread joint nut.

3, hydraulic tapping machine for blast furnace according to claim 1, it is characterized in that: mechanism also comprises identical articulator hole axle to propulsive mechanism with disclosing into, be hinged on the articulated slab of dolly (26), (65) with the wheel shaft of bearing pin (33) special entity, but self-adaptation in service positioning; Shared guided bearing device adopts heat-resisting steel sheet and plate to be fixed by bolts on the mainframe (1); Disclose holes mechanism and also comprise clip (40), to disclose holes mechanism is fixed on the dolly (65), tapping pin is a water gas pipe, be fixed on the ram hammer (37) with the eccentric card lever apparatus, propulsive mechanism and disclose mechanism into and all be contained in propelling frame (27) with two independent parallel guide rails and disclose on frame (44) the synthetic mainframe (1), mainframe (1) is lifted on the transversely-moving rack (42) of transverse-moving mechanism by parallel suspension rod.

4, hydraulic tapping machine for blast furnace according to claim 1, it is characterized in that: transverse-moving mechanism also comprises transversely-moving rack sliding sleeve, cylindrical guide anti-rotation groove and clamp, spacing buting iron seat (46), adjusts screw (47), link span and vertical shaft, transversely-moving rack is assemblied on the cylindrical guide (43) by sliding sleeve, cylindrical guide then is fixed on the anchor by clamp, bolt and anti-rotation groove, the two ends of sideslip oil cylinder (10) are hinged on respectively on anchor (41) and the transversely-moving rack (42), and anchor is installed on the vertical shaft of rotating tapered shaft end by link span.

5, hydraulic tapping machine for blast furnace according to claim 1, it is characterized in that: hoisting appliance also comprises the suspension rod bearing pin, tooth bar formula is suspension rod (55), (56), flat axle bolt (57), spring (58) up and down, dowel hole, locating sleeve, strongback and buting iron, curved bar (50) upper end is hinged on the axis pin base of transversely-moving rack (42) front end with bearing pin, before being hinged on, the curved bar lower end hangs the middle part of connecting rod, the middle part of curved bar is then hinged with hoist cylinder (49) piston rod, and the hoist cylinder afterbody is hinged on the transversely-moving rack; Suspension rod is by trilateral tooth bar snapping up and down, and fixing with flat axle bolt (57), connect into rigid hanger, hang parallel four connecting rods (51) mainframe (1) and transversely-moving rack are coupled together, the length of suspension rod realizes mainframe (1) before and after adjusting, and promptly bores the inclination angle of pricker (12) and adjusts.Strongback is fixed by bolts to the transversely-moving rack rearward end, and alignment pin and spring (58) are contained in the locating sleeve, hangs the spring force of the upper springs (58) of connecting rod after with bolt locating sleeve being fixed and can adjust, and locking is by alignment pin fastening in the groove of strongback.Hoisting appliance can move with transversely-moving rack, discloses transposition to adapt to bore.Buting iron (53) is welded on the transversely-moving rack front end, to the hoisting appliance front limit.

6, hydraulic tapping machine for blast furnace according to claim 1 is characterized in that: traversing mechanism also comprises rotary motor oil supporting base, rocking bar setting nut (62), anchor iron-spring return formula oil cylinder (15), fixing buting iron; Four connecting rods are to be toggle-action lever with pivoted arm (9) ad, and cd is a connecting rod, and bc is a rocking bar, and ab is that fixed link is the point of two on the base, and bc can transfer length by setting nut; Rotary motor oil (7) is fixed on the rear end of pivoted arm by supporting base, gear ring (61) is fixed on the bearing column (59), gear (60) is contained in the axle head that of oil motor (7), oil motor has enough to meet the need on gear and makes the pivoted arm revolution, adopts anchor iron and spring return formula oil cylinder to be fixed on the pivoted arm rear end, and the fixed stop ferropexy is on the base corresponding position, pin traversing mechanism during perforate work, unblank with the revolution interlock when resetting, make and locate reliably, unblank in time to realize by hydrostatic control.

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