EP0464419A2 - Vorrichtung zum Montieren und Demontieren von Blasformkästen in Schachtöfen - Google Patents

Vorrichtung zum Montieren und Demontieren von Blasformkästen in Schachtöfen Download PDF

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Publication number
EP0464419A2
EP0464419A2 EP91109680A EP91109680A EP0464419A2 EP 0464419 A2 EP0464419 A2 EP 0464419A2 EP 91109680 A EP91109680 A EP 91109680A EP 91109680 A EP91109680 A EP 91109680A EP 0464419 A2 EP0464419 A2 EP 0464419A2
Authority
EP
European Patent Office
Prior art keywords
yoke
claws
sleeve
clamp
operating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91109680A
Other languages
English (en)
French (fr)
Other versions
EP0464419B1 (de
EP0464419A3 (en
Inventor
Nicolas Bonami
Edmond Mainz
Edouard Sand
Ernest Sand
Nicolas Wintersdorf
Michel Lux
Francis Gross
Victor Hutmacher
Patrick Pfeiffer
Pierre Mailliet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP0464419A2 publication Critical patent/EP0464419A2/de
Publication of EP0464419A3 publication Critical patent/EP0464419A3/fr
Application granted granted Critical
Publication of EP0464419B1 publication Critical patent/EP0464419B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/16—Arrangements of tuyeres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C21B7/166—Tuyere replacement apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53835—Puller or pusher means, contained force multiplying operator having wedge operator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
    • Y10T29/53857—Central screw, work-engagers around screw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
    • Y10T29/53857—Central screw, work-engagers around screw
    • Y10T29/53861—Work-engager arms along or parallel to screw

Definitions

  • the present invention relates to a device for assembling and disassembling drums from a shaft furnace, which, in the operative position, are wedged on a circular interior seat of a chapel in the wall of the furnace, comprising a clamp with retractable claws, which can be engaged through the tympe and maneuvering means passing through the clamp and maneuverable from the outside to deploy or retract the claws radially with respect to the axis of the tympe.
  • tank furnaces in particular blast furnaces, are supplied with hot air and with liquid or solid fuels through a circular lining of nozzle at the crucible of the furnace.
  • These nozzles are held in place by a tymp housed in the inner part of the wall of the oven, these eardrums being extended towards the outside of the wall by a chapel fixed to the metal shielding outside of the oven.
  • the chapel, the tympe and the nozzle are frustoconical parts nested, in this order, telescopically one inside the other.
  • the chapels are generally made of steel, while the tympanums and nozzles are made of copper.
  • the eardrums and nozzles are further cooled with water thanks to a double frustoconical wall.
  • the disassembly of a nozzle which protrudes from the interior side of the wall of the oven does not, in general, pose any particular problems
  • the disassembly of a tympe is, in general, a much more difficult operation given that that -ci is not only stuck on the inner seat of the chapel but, in addition, is embedded in the refractory material of the wall of the furnace, which it must also undergo the weight and, possibly, any relative movement.
  • the dismantling of a tympe is generally carried out by a manual intervention team, composed of five to six workers who try to unlock the tympe from its seat using long metal hooks gripped behind the inner edge of the tympe, when the nozzle is cleared.
  • a manual intervention team composed of five to six workers who try to unlock the tympe from its seat using long metal hooks gripped behind the inner edge of the tympe, when the nozzle is cleared.
  • the trick consisting in interrupting the circulation of cooling water in the tympe so as to let it warm up by the heat of the top wall stove beyond the temperature to which it is normally exposed.
  • Patent application EP No. 90124485 proposes a device for mounting or dismounting nozzles or drums from the furnace to the tank. It is a relatively complex machine provided with a clamp that can grip both the nozzle and the tympe and allowing the release of these parts from their seat without manual force.
  • This gripper is operated using a hydraulic unit capable of actuating two telescopic elements of the gripper in the opposite direction opposites, so that the hydraulic aggregate must be specially designed for this purpose, which makes the machine relatively complicated and expensive.
  • the object of the present invention is to provide a simpler device for unlocking and dismantling the eardrums and which can be actuated by conventional and standard means.
  • the device proposed by the present invention is essentially characterized in that the clamp and its operating means are carried by a yoke designed to be adapted on the outside edge of the chapel and to be associated with a known pneumatic wrencher capable of be adapted to the outside of the yoke, either on extensions of the claws, or on their operating means to exert, by its rotation and its support on the yoke, a tensile force on the claws of the clamp.
  • orientation qualifiers "interior” and “exterior” used in the present description always refer to blast furnaces, insofar as “interior” means the interior side of the furnace and “exterior” refers to the exterior side of the furnace.
  • the device proposed by the present invention is extremely simple. After having removed the elements of the wind carrier directing the hot air in the nozzle, the device mounted, preferably on a suitable chassis, is moved using a forklift in the axis of the tympe and is advanced along this axis to engage the clamp in the open position, that is to say claws retracted, through the tympe until the yoke is supported on the circular edge of the chapel and on which it can possibly be fixed using clamping screws. The clamp is then opened using its operating means until the hooks are secured behind the inner edge of the tympe.
  • the yoke is preferably a multi-branch yoke, with three branches extending radially from the hub of the yoke at 120 ° intervals.
  • the clamp therefore includes also three claws associated with the three branches of the yoke and each provided on the inside with a hook which can be stowed behind the inner edge of the tymp.
  • the device proposed by the invention it is possible to remove the eardrums from a blast furnace without great manual effort and, above all, without danger for the intervention team.
  • the eardrums unlocked and removed using this device are never damaged during extraction, so that they can be reused, if they have not undergone any other degradation during their usage.
  • the device can be easily operated by two workers, instead of five to six for manual intervention.
  • the intervention time is also reduced to a duration, which, on the one hand, is practically invariable for removing a tympe and which, on the other hand, remains within the limits of one hour, so that stopping of blast furnace production is minimized.
  • the invention also provides various embodiments for the operation of the pliers and the bolt-on tool.
  • each claw opposite the hooks is articulated on a tensioner which is crossed by a threaded rod, housed in the corresponding branch of the yoke, without the possibility of axial displacement, but with the possibility of rotation under the action of a screwdriver connectable to a polygonal head of the rod.
  • the means for operating the clamp comprise, according to a first embodiment, a corner consisting of three inclined ramps extending radially from an axial operating rod and diverging towards the inner end of the clamp, each ramp comprising means guide a cam integral with each of the claws to cause deployment or radial retraction thereof according to the direction of axial movement of the operating rod.
  • This operating rod may consist of two telescopic parts penetrating one into the other by respectively external internal threads, the part carrying the operating corner of the clamp being stationary in rotation and movable axially, the other being housed in the hub of the yoke in axial immobilization, but with the possibility of rotation thanks to an external polygonal head which can be actuated by a bolting machine.
  • the three claws are respectively housed between three pairs of legs converging according to the taper of the tympe and fixed longitudinally on a flange carried by the inner end of a socket which is axially displaceable through the hub of the yoke, but keyed in rotation relative to it.
  • the claws bear, at their end, yoke side, on said flange of the sleeve and are, by their opposite inner end, deployable and retractable radially under the action of an axial displacement of an operating rod passing coaxially through the clamp and the sleeve, this rod being axially displaceable in rotation relative to the sleeve, but keyed in rotation relative to the latter.
  • the deployment of the three claws can be ensured by three domed leaf springs provided on a sleeve fixed on the operating rod, while the retraction of the claws against the action of the spring blades can be produced by cams provided on this sleeve and associated with oblique ramps on the claws and under the action of an axial depression of the operating rod in the tympe. Each claw is then also axially displaceable within the limit of stops provided on the corresponding tabs.
  • each claw can be articulated on an extension crossing the corresponding branch of the yoke and on the threaded end of which can be connected a bolting machine by means of a mandrel which can take support on the yoke branch.
  • the gripper can be actuated using a tubular operating sleeve comprising an cooperating external thread, on the external side of the yoke, with an internal thread of the sleeve and an internal thread cooperating with an external thread of the end of the operating rod axially passing through the sleeve, the external and internal threads of the sleeve having respectively a right and a left pitch so as to move, by the same maneuver, the sleeve and the operating rod in opposite directions.
  • This maneuver can be carried out manually using a retractable lever engaged on the maneuvering sleeve.
  • a mandrel comprising a cylindrical cap engaged around the operating sleeve to bear on the hub, this mandrel being extended outwards via '' a rotary adapter comprising an internal screw thread to be screwed onto the external thread of the pliers operating rod and a female axial polygonal connection to be coupled to the bolting machine.
  • a tubular operating sleeve comprising a thread cooperating outside, on the outside of the yoke, with an internal thread of the yoke hub and an internal thread cooperating with an external thread of the sleeve to move the latter in the axial direction.
  • the bolting machine can be connected to the operating rod by means of a mandrel screwed onto the external thread of the end of the rod and comprising a female axial polygonal connection to be coupled to the bolting machine, this, by bearing, by the mandrel, on the sleeve, serving both for opening and closing the clamp, as for the extraction of the tympe.
  • this rod preferably comprises a spherical articulation with a limited angular play to compensate for any decentering of the device or the tympe.
  • FIG. 1 schematically shows the general environment in which the device proposed by the present invention is to operate.
  • the hot air intended to be injected into a shaft furnace is withdrawn from a circular pipe 10 evolving around the lower part of the furnace and is conveyed through blower holders 12 to a lining of nozzles 16 to be injected into the oven.
  • the nozzles 14, which further include injectors 18 of solid or liquid fuels, extend through an opening in the wall 20 of the furnace and its metal shield 22. This opening is delimited in the wall 20, from the outside towards the inside, by a steel chapel 24 and a copper tympe 26, the nozzle 16, also made of copper, extending the tympe 26.
  • the nozzle 14 comes to bear on a front seat, generally spherical, which is provided the nozzle 16.
  • a front seat generally spherical, which is provided the nozzle 16.
  • the chapel 24, the tympe 26 and the nozzle 16 all have a frustoconical shape and are telescopically fitted one inside the other.
  • FIG. 2 represents the most simplified version of a device for extracting the tymp 26.
  • the figure shows this device in the operative position for extraction, after prior release of the nozzle.
  • the device shown in FIG. 2 comprises three essential parts, namely a multi-branch yoke 30 as a support for the functional elements which are a clamp and the means for operating the latter.
  • the yoke 30 simply consists of three branches 32 extending radially from the hub 34 and forming between them equal angles of 120 °.
  • the ends of the arms 32 can be provided, on their inner face, with shoes 36 to bear on the circular edge of the chapel 24.
  • the branches 32 can also include means allowing the yoke to be fixed on the edge of the chapel 24.
  • the branches 32 can be extendable so that they can be adapted to chapels of different diameter.
  • the embodiment of FIG. 2 essentially comprises three linkages, only one of which is shown at 38. These each include an interior part formed by a rod 40 ending in a hook 42, the three rods 40 constituting in fact the claws and a clamp 44.
  • the external part of the rods 38 is formed essentially by a traction screw 46 ending outside the yoke 30 by a square head 48 allowing the rotation of the traction screw 46.
  • the connection between the traction screw 46 and the claw 40 is constituted in the form of a tensioner 50 connected by an articulation to the claw 40.
  • the tensioner 50 comprises a nut 52 with a counter-thread crossed by the traction screw 46.
  • each tensioner 50 is preferably housed in a protective box 58 secured to the branch 32 of the yoke 30.
  • the opening and closing of the clamp 44 are carried out using a device constituted by an operating wedge 60 carried by an axial operating rod 62.
  • This operating rod 62 consists of two interpenetrable telescopic parts, namely a hollow rod 64 and a threaded rod 66 housed axially in the hub 34 of the yoke 30 and whose internal threaded part cooperates with a corresponding internal thread of the hollow rod 64, or more simply with a lock nut 68 welded to the end of the hollow rod 64.
  • the other end of the threaded rod 66 has, like the traction screws 46, on the other side of the yoke 30, a square head and, likewise, is immobilized axially in the yoke 30 by stops 70.
  • a rotation of the rod 66 causes an axial displacement of the hollow rod 64 in one direction or the other according to the direction of rotation.
  • the functions of the rods 64 and 66 can be reversed, that is to say that the rod 64 is full and enters the hollow of a rod 66 by the rotation of the latter.
  • a person skilled in the art may provide other means, just as simple, for ensuring the axial displacement of the part 64 of the operating rod 62.
  • the operating corner 60 can be constituted (see also FIG. 3), in its simplest version, by three ramps 72 fixed radially on the inner end of the rod 64 and diverging from the latter towards each of the claws 40 , to form a general configuration in the form of a tripod.
  • Each of the hooks 42 is provided, in its interior corner, with a finger or a cam 74 guided along the interior edge of the corresponding ramp 72.
  • the maximum diameter of the operating corner 60 must, of course, be less than the smallest section of the tympe 26 to allow the device to be put in place.
  • the yoke 80 also uses a support yoke 80 (see also FIG. 8) intended to be applied or fixed to the outer edge of the chapel 24 and carried, according to the embodiment, by an appropriate chassis.
  • the yoke 80 also comprises three branches 82 extending radially from the hub 84 of the yoke 80.
  • the ends of the branches 82 are provided with anchoring bolts 86 allowing the yoke to be anchored on the edge of the chapel 24.
  • These bolts d anchor 86 are preferably movable in radial grooves 88 of branches 82 to compensate for possible deformations of the chapel or to be adapted to chapels of different sizes.
  • Figure 5 shows a first embodiment of the device in place on the chapel 24 and supported on a frame 90 transportable using a forklift 91.
  • the invention recommends for the embodiment of Figure 5 as well than those in the following figures, a more sophisticated clamp 92 of the kind described in patent application EP 90124485. Since this clamp is described in detail in the aforementioned document, it will only be described briefly in the context of the present application with a invitation to the reader to refer to the aforementioned document for further details.
  • the clamp 92 therefore comprises three claws 94 provided with an internal hook and positioned around an axial operating rod 96 opposite the branches 82 of the yoke 80.
  • Each of the claws 94 is housed inside a pair of legs, only one of which is shown at 98 in the figures.
  • These legs 98 of substantially triangular shape, converge longitudinally along the taper of the tympe 26 and are fixed on a diametral flange 100.
  • the claws 94 take, between the adjacent legs 98, by their external part, bearing on the peripheral edge of the flange 100.
  • the six legs 98 are also integral with a collar circular 102 intended to bear on the outer edge of the tympe 26.
  • the claws 94 In the open position of the clamp 92 (see FIG. 7) the claws 94 have a certain freedom of axial movement limited, on the one hand, by a flange 104 opposite the flange 100 and, on the other hand, by stops 106 , 108 provided respectively on the claws 94 and the adjacent legs 98.
  • the inner part of the operating rod 96 is surrounded by a coaxial cylindrical sleeve 110 held in place, on one side, by a flange 112 of the rod 96 and, on the opposite side, at the end of the rod 96 by a radial flange 114 fixed on this rod.
  • the sleeve 110 carries three pairs of radial flanks 116, one of these being only shown in the figures, the positions of which correspond to those of the legs 98 and which frame the inner part of each of the claws 94.
  • each of the three spaces delimited by each pair of flanks 116, the axial edge of the claws 94, the sleeve 110 as well as the flange 112 and the flange 114 is a floating spring leaf 118 whose elasticity tends to bulge as shown in FIG. 5
  • an oblique cam 120 intended to cooperate with an oblique ramp 122 provided on each lateral side of the claws 94 and formed by a widening of the inner end thereof.
  • Figures 5 and 6 show the clamp 92 in the fully closed position, the tympe 26 being wedged between the collar 102, on the one hand and each of the hooks of the claws 94, on the other hand.
  • the operating rod 96 is moved axially, in one of the ways explained in more detail thereafter, to the right in the figures, the flange 100 with its collar 102 and the legs 98 remaining in place. Thanks to this movement, the inner end of the claws 94 is first released from the grip of the flange 114, while the cams 120 approach the ramps 122 of each of the claws.
  • the claws 94 From the moment the cams 120 come into contact with the ramps 122, the claws 94, by virtue of a certain axial and radial freedom, are also driven to the right in the figures, under the effect of the pushing of the cams 120 up to that their axial movement is stopped in mutual contact with the stops 106 and 108. Thanks to this axial translation, the claws 94 are released from the inner face of the tympe 26. The continuation of the axial movement of the operating rod 96 towards the right in the figures, causes the cams 120 to act on the inclined ramps 122 since the claws are now blocked by the stops 108. This causes, as shown in FIG.
  • Closing the clamp 92 comprises the same sequences in reverse order.
  • the operating rod 96 is moved to the left from the position of FIG. 7. This movement causes the disengagement of the cams 120 from the inclined ramps 122 from the prongs 94 to release them by the action of the blades. spring 118.
  • the elastic deformation of these blades 118 towards the positions of FIGS. 5 and 6 and the continued movement of the operating rod to the left cause the claws 94 to slide, under the action of the flange 114 up to the position of FIGS. 5 and 6 according to which the clamp is closed and maintains the tympe 26 between the collar 102 and the hooks of the claws 94.
  • FIGS. 5 and 6 are the same as regards the axial operation of the rod 96.
  • This rod 96 passes coaxially through a cylindrical sleeve 130 which carries at its inner end the flange 100.
  • the rod 96 can slide axially by relative to the socket 130 but is immobilized in rotation relative to the latter by means of a key 132.
  • the socket 130 for its part, is housed in the hub 84 of the yoke 80 so as to be able to slide therein in the axial direction, while being locked in the rotary direction by means of another key 134.
  • the axial displacement of the rod 96 is initiated by a tubular operating sleeve 136.
  • This comprises an external thread 138 by which it is screwed into a corresponding internal thread of the front part of the sleeve 130.
  • the sleeve 136 also comprises an internal thread 140 matching a corresponding external thread around the end of the rod 96 emerging from the socket 130.
  • One of the threads 138 or 140 has a thread on the right, while the other of the threads 140 or 138 has a screw thread on the left. Thanks to these opposite screw threads, by rotating the sleeve 136 manually using a retractable lever 142, the feedback on the sleeve 130 and the rod 96 encourages these two elements to move in the opposite direction.
  • the operating rod 96 is guided in the sleeve 130, it does not, unlike the embodiments of FIG. 2, compensate for misalignments or irregularities in positioning of the yoke. This is the reason why there is provided in the rod 96 an articulation 150 shown in more detail in FIG. Sa.
  • the operating rod is in two parts 96a, 96b which touch each other along a spherical articulation surface defined by a convex face of one of the parts 96b and a concave part complementary to the other part 96a of the rod 96.
  • the stability and the junction of the two parts 96a and 96b is ensured by a belt 152 of which an axial opening 154 is greater that the corresponding part 96a so as to leave an annular clearance 156.
  • this clearance 156 one of the parts 96b or 96a may undergo, with respect to the other part 96a or 96b, an offset to the inside a solid angle ⁇ .
  • This angular mobility allows the compensation of any irregularity or misalignment of the tympe 26 or of the extraction device and therefore ensures correct positioning of the clamp relative to the tymp 26.
  • each of the claws 94 is articulated, on the outside, on an extension 160 which crosses the corresponding branch 82 of the yoke 80.
  • the end of this extension 160 is provided with a thread of screw on which is engaged a pneumatic bolting machine 162 by means of a mandrel 164.
  • the mandrel 164 is encouraged to screw on the extension 160, but, retained by a bearing surface 166 provided for this effect on the branch 82, it exerts a corresponding tensile force on the extension 160 and on the claw 94.
  • the two other claws, not shown, are successively acted on until the tympe 26 is released by axial sliding of the sleeve 130 in the hub 84 under the thrust of the tympe 26 on the collar 102.
  • the whole device including the tympe 26 held in the closed clamp 92 can be extracted from the chapel, after release of the bolts 86 from the yoke 80, by retraction of the forklift truck on which the chassis 90 is located.
  • the tympe 26 is released from its seat on the chapel 24 by acting on the operating arm 96.
  • using a slightly modified support frame 170 allowing the installation of a pneumatic wrencher 172 in axial alignment on the operating rod 96.
  • This wrencher 172 is also a conventional wrencher commercially available and sufficiently powerful for the needs of the cause.
  • This can be connected to the end of the operating arm 96, via a mandrel 174, after removal of the lever 142.
  • This mandrel 174 has a cylindrical cap 182 which can be engaged around the sleeve 136 to take support on the hub 84 of the yoke 80.
  • the mandrel 174 also comprises a rotary adapter 176 connected by means of a bearing 178 to the cap 182.
  • the adapter 176 has, in the hollow of the cap 182, an axial opening with a no screw designed to be screwed onto the threaded end of the operating rod 96.
  • a polygonal female connector 180 allows connection with the wrench 172.
  • FIG. 9 represents a variant of the embodiment of FIG. 6, insofar as the chassis 170 is replaced by a carriage 186 traveling on rails, not shown, and suspended below the circular hot wind pipe which exists around some blast furnaces to support a wind-breaker dismantling machine.
  • the tympe extraction device which is exactly the same as that of FIG. 6, is carried in a cradle 188 mounted on the carriage 186 and whose inclination is adjustable by means of a double adjusting nut 190.
  • Figures 10 and 11 show another embodiment respectively representing the clamp 92 in the closed position and in the open position. If the operation and the constitution of the clamp 92 are identical to the embodiment of FIG. 6, on the other hand, the operation of the clamp is different.
  • the opening and closing of the clamp 92 are also carried out using an operating rod 200 axially displaceable in a bushing 202 which, in turn, is axially displaceable in the hub 204 of the yoke 80.
  • the operating rod 200 that the sleeve 202 are immobilized in rotation using keys.
  • the operating sleeve 206 does not act on the operating rod 200 which freely crosses a central opening of the sleeve 206.
  • the latter also has an internal and external thread, but these cooperate respectively with an external thread of the sleeve 202 and an internal thread of the hub 204.
  • the operating sleeve 206 only serves to axially move the sleeve 202 so as to close the clamp 92 from the rear, by the support of the collar 102 on the outer edge of the tympe 26.
  • the external and internal threads of the sleeve are also of opposite pitch so that when the sleeve 206 is screwed into the hub 204, the sleeve 202 undergoes an axial displacement twice as great relative to the hub 204 in the same direction.
  • the maneuvering rod 200 is actuated directly using a conventional bolting machine 210 by means of a mandrel 212 which has an internal thread allowing it to be screwed onto a thread 214 at the end of the rod 200 and a female polygonal connection enabling it to be fitted directly to the bolting machine 210.
  • the bolting machine and the type extraction device are also supported by a frame 216.
  • the device For the disassembly of a tympe 26, the device is brought, using a forklift 218 in the position of Figure 11 until the collar 102 of the clamp 92 is in abutment on the edge outside of the tympe 26.
  • the adjustment bolts 86 of the yoke 80 are tightened to secure it on the edge of the chapel 24.
  • the sleeve 206 is actuated in the direction corresponding to a displacement of the sleeve 202 towards the left by a distance of the order of a few millimeters, sufficient to free the outer edge of the tympe 26 from the grip of the collar 102.
  • the bolt-driver 210 is then actuated to rotate the mandrel 212 which, by its pressing on the sleeve 206 and its rotation, exerts an axial tensile force on the rod 200.
  • This movement causes the clamp 92 to close and, from the closing of this, the continuation of the action of the wrencher 210 unlocks, under the effect of traction on the rod 200, the tympe 26 of its seat.
  • the operation is in principle terminated when, after unlocking the tympe 26, the latter again rests on the collar 102. After releasing the bolts 86 from the yoke 80 the whole device, including the tympe 26 stowed in the closed clamp 92 can therefore be released.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)
  • Golf Clubs (AREA)
  • Clamps And Clips (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Automatic Assembly (AREA)
  • Braking Arrangements (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Gripping On Spindles (AREA)
EP91109680A 1990-06-29 1991-06-13 Vorrichtung zum Montieren und Demontieren von Blasformkästen in Schachtöfen Expired - Lifetime EP0464419B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87758A LU87758A1 (fr) 1990-06-29 1990-06-29 Appareil pour l'extraction des tympes des hauts fourneaux
LU87758 1990-06-29

Publications (3)

Publication Number Publication Date
EP0464419A2 true EP0464419A2 (de) 1992-01-08
EP0464419A3 EP0464419A3 (en) 1992-08-05
EP0464419B1 EP0464419B1 (de) 1995-08-30

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EP91109680A Expired - Lifetime EP0464419B1 (de) 1990-06-29 1991-06-13 Vorrichtung zum Montieren und Demontieren von Blasformkästen in Schachtöfen

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US (1) US5203063A (de)
EP (1) EP0464419B1 (de)
AT (1) ATE127161T1 (de)
AU (1) AU639800B2 (de)
BR (1) BR9102778A (de)
CA (1) CA2045915C (de)
DE (1) DE69112509T2 (de)
ES (1) ES2078996T3 (de)
LU (1) LU87758A1 (de)
ZA (1) ZA914578B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0639750A1 (de) * 1993-07-30 1995-02-22 Co-Steel Sheerness Plc Befestigungseinrichtung für Brenner

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
SE466589B (sv) * 1991-01-02 1992-03-09 Boerje Sjoebom Lageravdragare
US6141868A (en) * 1998-01-07 2000-11-07 Intri-Plex Technologies, Inc. Apparatus for press-in attachment of suspension assembly in hard disk drive
BRPI0603450A (pt) * 2006-07-24 2008-03-11 Gerdau Acominas S A ferramental para troca de ventaneiras e caixas de refrigeração
US9486902B1 (en) * 2014-04-01 2016-11-08 Alexander K. Miller Tool for pulling impeller wear ring
CN106636511B (zh) * 2017-02-15 2019-06-07 中冶南方工程技术有限公司 风口小套的拆卸机构及其拆卸方法
CN106636512B (zh) * 2017-02-15 2019-06-07 中冶南方工程技术有限公司 风口小套拆卸机构及其拆卸方法
CN109022653A (zh) * 2017-06-12 2018-12-18 鞍钢股份有限公司 一种卸高炉风口的专用工具及使用方法
CN112370074B (zh) * 2020-10-31 2022-07-19 王敏 一种超声科探头自动清洗消毒设备
CN113403438A (zh) * 2021-05-10 2021-09-17 李旋 一种具有熔接面扭断功能的直筒型风口小套拆卸装置

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE1244214B (de) * 1962-04-02 1967-07-13 Paul Wolf G M B H Vorrichtung zum Ausbau der loesbaren Blasformspitze aus dem in Hochoefenwaenden eingesetzten Kapellenrahmen
FR1542701A (fr) * 1967-09-05 1968-10-18 Yawata Iron & Steel Co Appareil pour le remplacement des tuyères
DE1955316A1 (de) * 1969-11-04 1971-05-06 Langenfeld Gmbh & Co Kg Maschf Vorrichtung zum Aus- und Einbauen von Blasduesen und Blasformen an Hochoefen
FR2233839A5 (en) * 1973-06-18 1975-01-10 Usinor Tuyere extn. on blast furnaces - using hydraulic extractor in adjustable mounting on a trolley
FR2398988A1 (fr) * 1977-07-29 1979-02-23 Wurth Paul Sa Dispositif pour la manutention des differents elements d'une installation d'injection d'air prechauffe dans un four a cuve

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US1631872A (en) * 1925-04-25 1927-06-07 Knight Henry John Gear puller
US4266907A (en) * 1977-07-28 1981-05-12 Paul Wurth, S.A. Device for handling the various components of an installation for the injection of pre-heated air into a shaft furnace
US4724608A (en) * 1986-11-20 1988-02-16 Parrott Ronald J W Extractor tool for bearings, bushings and the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244214B (de) * 1962-04-02 1967-07-13 Paul Wolf G M B H Vorrichtung zum Ausbau der loesbaren Blasformspitze aus dem in Hochoefenwaenden eingesetzten Kapellenrahmen
FR1542701A (fr) * 1967-09-05 1968-10-18 Yawata Iron & Steel Co Appareil pour le remplacement des tuyères
DE1955316A1 (de) * 1969-11-04 1971-05-06 Langenfeld Gmbh & Co Kg Maschf Vorrichtung zum Aus- und Einbauen von Blasduesen und Blasformen an Hochoefen
FR2233839A5 (en) * 1973-06-18 1975-01-10 Usinor Tuyere extn. on blast furnaces - using hydraulic extractor in adjustable mounting on a trolley
FR2398988A1 (fr) * 1977-07-29 1979-02-23 Wurth Paul Sa Dispositif pour la manutention des differents elements d'une installation d'injection d'air prechauffe dans un four a cuve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0639750A1 (de) * 1993-07-30 1995-02-22 Co-Steel Sheerness Plc Befestigungseinrichtung für Brenner

Also Published As

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US5203063A (en) 1993-04-20
BR9102778A (pt) 1992-02-04
ES2078996T3 (es) 1996-01-01
ZA914578B (en) 1992-04-29
EP0464419B1 (de) 1995-08-30
CA2045915C (en) 2002-03-12
AU7943391A (en) 1992-01-02
DE69112509D1 (de) 1995-10-05
ATE127161T1 (de) 1995-09-15
EP0464419A3 (en) 1992-08-05
DE69112509T2 (de) 1996-03-21
LU87758A1 (fr) 1992-01-15
AU639800B2 (en) 1993-08-05
CA2045915A1 (en) 1991-12-30

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