LT3389B - Device for removing wearing fashion bricks with hole or lining - Google Patents

Abstract

The eliminator for worn profile bricks with holes of the pits of metallurgic capacities or openings has an expandable device (20) with a gear, designed to extract bricks with holes or openings using an expandable device. The expandable device (20) is mounted on the device holder (9), which can move in the axial direction of the support or carriage (8) and can be connected to at least one gear.The device holder (9) is particularly useful in that it has an axial cavity (12) with a mounted rotating toothed roll (13, 14), and the toothed roll (13) is linked to at least two. The best has three expandable lips (20), which can slip into a device holder (9) in a radial direction.

Description

The invention relates to a device for removing worn-out bricks with a hole or a furrow in an outlet of metallurgical tanks, a device for entering a brick hole or an outlet and an actuator for the removal of a brick or fern by means of an expanding device.

The use of devices for the extraction of molded bricks with a hole in the outlet of metallurgical tanks is already known, for example from Austrian patent no. 386422. These devices have a support and an axially extending device associated therewith with a retractable hydraulic cylinder slidably extending the retractor.

The extraction device of this known device has at least two clamping hooks that interact with the brick with the hole and remove it from there by means of an expanding device.

This known device is required to remove a brick with a hole from the outlet of the metallurgical container without affecting the permanent hardware of the metallurgical container. A known device is manually set in the correct position and secured to the outside of the hot metallurgical vessel, and these operations cause a great deal of trouble, especially when removing a brick with a hole requires the manual brick to be removed. In most cases, it is not usually possible to pull the bricks out of the drain hole by pressing or pulling axially without damaging its permanent fitting. From Austrian patent no. No. 383831 discloses a brick-hole blower extractor which takes into account that simple axial pulling without additional measures does not guarantee the release of the brick. This known device, which also needs to be manually coupled to the blower, has a slider that hits the support with great force, and the resulting inertia produces a longitudinal force that pulls the blower out of the brick with a hole. The pull-out effect in this case is shock-striking, but this unit is manually mounted on the required pull-out blower. Also fitted on the outside of a hot metallurgical tank to minimize break times.

Known from Austrian patent no. The 383831 device can only pull out blowers, not the bricks with holes themselves. Borehole bricks are mainly used in drainage holes, especially in converters, and the wear of refractory bricks is due to contact with molten metal during the melting / blasting of the metal.

The casting area therefore has in most cases a two-layer brick with openings, and the interchangeable bricks are bonded to the permanent brick, i.e. longer term refractory in metallurgical container. Such binder-bonded, permanently fabricated bricks with holes, in particular metal-washed bricks, shall, as a general rule, be replaced by hammer splitting or by drilling. Hydraulic extraction units known, for example, from Austrian patent no. 386422, in most cases, are successfully used only when their clamping nails grip the bricks with holes from the inside, providing sufficient pull-out effect, but here, too, naturally there is no easy way to avoid permanent damage to the computer.

The invention has an object of the type described above, which, without additional action, such as the installation of a working ladder, allows all the working operations required for the complete replacement of refractory bricks with holes, including the installation of new bricks with holes.

For this purpose, the expanding device is axially mounted in a tool holder on a support, namely, a bayonet on which the tool latch can slide, and that the tool holder can be connected to at least one gear. Because of the expanding device mounted in the tool carrier moving axially, the support, namely the batten, can be easily positioned and obtain a sufficiently large workflow for various working brick placement and removal operations, usually replacing the tools in the tool holder. The expanding device can be used to remove bricks with holes or to install new bricks, and this expanding device can be fitted with tools that are convenient for full hole cleaning. Thanks to the specified slider, new positioning of the new brick with the hole can be carried out in the correct position without the simple removal of worn-out brick or hardware, while the flexibility of the tool holder with respect to the support, especially the bayonet. This greatly simplifies the process of removing and inserting brick holes, namely without having to be propped up and fixed to the hot wall of the tank as the prop or batten has the appropriate gear and sets it in the required position and the reaction forces are transmitted to the chassis. The use of a tool holder allows the holder to perform other work activities, such as chilling brick holes, in preparation for replacement. This cooling of the brick with holes before they are replaced causes internal stresses that facilitate the extraction of the brick with holes, thus saving the extraction tool. Depending on the type of actuator used, the tool holder also allows post-expansion bricks to be pulled out by means of auxiliary strokes or forging, while the tool holder may include drilling tools to calibrate the hole for inserting new bricks with a hole. Also, a pre-assembled brick package with a tool holder can be placed in place with the help of a ceiling mount.

In order to perform all these functions, it is advantageous to use a device according to the invention having a tool holder having an axial cavity. It has a pivotable spindle which interacts with at least two, preferably three, radially extending lips in the tool holder. If necessary, rotary movement of the drilling or calibration tool can be obtained by means of a rotating gear shaft, and the expandable lips can be used directly to attach the calibration tool. Conversely, if the rotation of the tool holder is stopped and only the pinion shaft is operating at the specified torque with the extended lips released, they are pressed against the inner wall of the hole bracket and can impact the tool holder with strokes to facilitate removal of the hole brick.

For rotational movement of drill and calibration tools mounted on expandable lips, it is useful in the design to mount the tool holder on a support or batten so that it can rotate or stop relative to the support or batten, which transmits the required effect or extension that allows the brick to be pulled.

A variety of gears can usefully be combined with the tool holder and the gear shaft, with a simple rotation of the gear shaft in a simple manner, and the impact holder with a hammer for impact to the support.

The impact actuator acts in this case on the hollow tool holder, thus on the respective rigid hollow part when the gear shaft is used for transmitting torque, as well as for lip crimping and hole drilling.

In the design of a wall with a hole for cooling and to obtain SUS retraction stresses by attenuating a worn brick with a hole, the gear shaft has at least one axial channel that terminates in nozzles or outlets adjacent the free end of the tool holder and has a fluid delivery nozzle. The corresponding sealed nozzle can be obtained in a simple manner by virtue of the fact that, for the supply of fluid, the support or bellows has an annular passage which is connected to the gear shaft axial passage by radial holes.

For the reinforcement of the assembly and the extension of the scope of the device according to the invention, the use of various tools in the construction makes it advantageous to connect the pinion shaft to the drive shaft in gear, the shaft being able to move axially.

Preference is given to a structure whose expandable lip head is screwed onto the tool holder by threaded connection to the rest of the tool holder holding the impactor so that the head can be easily removed from the tool holder. The pivoting pinion shaft also removes the pinion shaft from the head and allows other tools to be connected to the pivoting pinion. For simple disassembly of the front without disassembling the drive or gears, it is useful to complete the design such that the tool carrier headstock thread has a core diameter larger than the outer diameter of the pinion shaft connected to the drive shaft, thereby allowing all pinion parts of the tool carrier and center drive shaft disassemble by removing them forward.

the device according to the invention makes it possible to connect the drill head directly to the tool holder in a particularly simple manner. This is achieved by designing a threaded sleeve with a round or trapezoidal thread on the outside, on which the drill head is screwed up to its resistance. Such a sleeve can be easily screwed onto the tool holder. The outer thread of this sleeve makes it easy to screw the drill head through the tool holder rotating gear. Screw on a round or trapezoidal thread on the bushing until it is resistant and rotate in the same direction for further drilling to prevent the head from turning. Otherwise it is necessary that the head in the closed position has a latch that secures the head to the tool holder. In order to be able to screw on the outer thread of the bushing, the head is kept rotating during screwing. At the same time, it is useful to use such a design where the drill head screwed on the bushing has a special torsional locking mechanism which interacts with the release support of the support. The subsequent drilling must, of course, have the required direction of rotation.

The invention will now be explained in more detail by the drawings which illustrate an embodiment of the invention. They show:

FIG. 1 is a side view of a moving device according to the invention.

FIG. 2 - FIG. 1 section at enlarged scale.

FIG. 3 - Enlarged view of the head and the far end of the head tool holder.

FIG. 4 - 5 - section of extending lips along line IV-IV;

FIG. 4 in a collapsed position, FIG. 5 in extended position.

FIG. 6 is a schematic view of a calibration tool in a mounting device according to the invention

FIG. 7 - installing a new borehole bracket installation in the device according to the invention.

FIG. 8 is an enlarged sectional view of an enlarged embodiment of a modified embodiment of a drilling rig mounting device according to the invention;

FIG. 9 is a partial section along the line ΙΧ-ΙΧ in FIG. 8th

FIG. 1 - Number 1 chassis mounted on crawler chassis 2. Hydraulic cylinders 3 and 4 mounted on raised or lowered boom

5. The hydraulic cylinder 6 moves the tool holder 9 mounted in the direction of the double arrow 7 on the support or boom 8. The support or booster 8 is pivotally mounted on the boom 5 and can be rotated by the hydraulic cylinder 4. The impact holder 10 impacts the tool holder 9 in the direction of the double arrow 11.

With the aid of a self-propelled chassis, the tool carrier can be transported to the positioning, extraction and removal of brick holes for metallurgical tanks, to an unconverted converter as needed Removing worn bricks or punching, including casting holes, worn calibration, and inserting new punching is performed without manual operation by placing the extraction device on a metallurgical container. Thus, with one device shown in FIG. 1, and with a minimum of staff, many castings can be serviced as well as in different converters. It is possible to dispense with the placement of appropriate holders and extraction devices in each casting area.

FIG. 2 shows that the tool holder 9 has a gear shaft 13 in its axial direction 12 and also a drive shaft 14 connected therewith, instead of a split gear shaft 1 which is more clearly illustrated in FIG. 3, a single spindle may be used, but the individual embodiment has the advantages of a common tool holder design, which will be explained in more detail below. The toothed shaft 13, as well as the drive shaft 14, has an axially extending passage 15 which terminates in the area of the tool holder head 16 at the nozzles or outlets 17. At the opposite end, the passage 15 is connected to the annular cavity 19 for fluid supply. In the area of the tool holder head 16 there is further provided an expandable lip 20 which can be extended radially with respect to the gear shaft, which also means with respect to the tool holder.

The impact device 10 transmits impact energy to two semi-cylinders 21 in the region of the connecting end 22. The impact energy thus obtained is transmitted from the impact device 10 to the external pipe 23 by means of a threaded nut to the external pipe 23. · The tool holder with its outer pipe is centered in the guide 24.

The torque is transmitted to the drive shaft 14 or to the pinion 13 by means of an unshared drive at the connecting end 25 in the direction of the arrow 26. The rotary movement of the working peripheral device with the switch 27, the drive shaft 14 and the respective teeth 28 is further transmitted to the gear shaft 13, which interacts with the expandable lips 20. The gear shaft connecting to the drive shaft teeth 28 as well as the mounting of the tool holder 9 to the outer tube of the tool holder 23 so that the thread 29 for attaching the head 16 to the tube 23 has a larger diameter than the outer diameter of the pinion shaft 13 in the coupling area. Some need to be prevented from turning

23. For this purpose, the locking means includes, for example, a disc having holes, which are connected at equal distances to the tube 23.

for operations on pipe 30 which

FIG. 4 and 5 show the construction and movement of the expandable lips 20. The expandable lips in the rack 31 are coupled to the outer rack 32 of the rack shaft 13 and the lips 20 in a rotational motion from the position shown in FIG. 4, in the radial direction as shown by arrow 33 in the position shown in FIG. 5. The lips are guided by the respective apertures of the tool and 34, which on the one hand prevents the expanding lips from falling out 20 and which, by further rotating FIG. 5, or lips your lips against a brick with a hole or a tool placed on them, begins to rotate the entire tool holder.

the expandable sliding bracket heads 16 each have a support

To remove bricks with a hole or worn-out hardware from the converter hole, the tool holder 9 is inserted into the hole to be cleaned. The liquid through the nozzles or outlets in the very front of the tool holder head cools the bricks with holes or hardware needed to remove the bricks to prepare for extraction and save the tool holder at the same time. The resulting internal cooling tensions subsequently support the release of the required hardware. After positioning the respective tool holder 9 in the direction of its displacement arrow 7 with respect to the bellows 8, the lips 20 entering the fatigue are disengaged and extended by the rotation of the pinion shaft 13. It is then hammered by the impact mechanism 10 and pulled out at the same time. FIG. 1, the tool holder 6, which is extended at the front inside the cutter, using the impact energy of the impact mechanism 10, is withdrawn from the cleanable opening.

Removing worn-out molded brick or worn-out brick from the cleaned casting hole will generally leave scraps of residual brick, and should be drilled or calibrated before installing a new brick or hole. This can be accomplished in a simple manner by means of a tool holder 9 by placing a drill crown or a calibration tool 35 on the expandable lips of the tool head as shown in FIG. 6. By rotating the tool shaft 13 with the expanding lip of the tool holder 9 and the outer tube 23, the drilling tool 35 drilling the injection hole is also rotated.

After cleaning or calibrating the opening, a new package of preformed bricks with a hole is placed on the Tool Holder 9. To this end, for example, a new bundle of molded bricks with a hole on the steel tube 37 is supported by the expandable lips 20 and positioned by pushing the entire tool holder forward into the molding opening. The attachment of the new brick package with hole is shown in fig. 7th

By dividing the drive shaft for transmission of torque or by rotating the entire tool holder 9 without rotating with each other with the partial shafts, as well as separately attaching the tool holder head 16 with expandable lips 20 to tube 23, the assembly of the entire tool holder 20 types of expandable lips, compatible with various holes.

By assembling the tool holder 9, inserting the half cylinders 21 for transmitting the impact energy and setting the transition section 27 against the shaft end 25, the tube 23 of the drive shaft 14 is screwed with a union nut 22. When mounting the tool holder head 16 first insert the expandable lips 20 then the pinion shaft 13 is inserted into the central hole of the headstock 16, whereby the expandable lips 20 are locked against falling out by their supports 34. The pin 16 with the expandable lips 20 is then inserted into the tube 23 and the teeth 28 provide a tight twisting pinion 13 to the drive shaft 14. Head 16 is fixed to pipe 23 by threading 29.

As mentioned above, the modular design of the tool holder 9 replaces the head 16 to accommodate holes of various diameters which need to be cleaned in a relatively simple manner. Subsequently, individual parts joined to the Tool Holder by threaded or fork-shaped joints can be quickly replaced. The simple construction of the tool holder 9 in the middle part with the tube 23 and the shaft 14 in the cavity 12 can be adapted to the shape of the bricks with holes of different lengths. At the same time, the outer diameter of the pipe 23 is selected to correspond to the smallest diameter required for machining a brick with a hole or a punching hole in a die. In addition to the various use of filler heads 16, various diameters of brick with holes or futering can be taken into account by a simple change of the extension lips 20. In general, it is possible to provide sufficient flexibility of operation with a small number of parts by generally replacing the head 16 and / or expanding the lips 20 while the large feed length or large stroke 8 of the tool holder 9 and the length of this tool holder with one holder.

Instead of placing the calibration or drilling tool on the expandable lips 20 as shown in FIG. 6, in the embodiment of FIG. 8 and 9, which retain the same numerals as the preceding figures, the fastening thread 29 of the tube 23 head 16 which in this embodiment encloses the free end 23 of the tube is elongated and a sleeve 38 connected to the tube 23 by a thread 29 which has a round profile thread 39. In the embodiment shown in FIG. In position 8 of the entire tool holder 9, the head with the non-detailing expandable lips 20 is close to the guide 24 through which the outer tube 23 passes, as shown in more detail in FIG. 2 and 3. In this position, the outer tube 23 is screwed into the drill head 40 by means of a bushing 38 which has a circular profile thread 41 interacting internally with the thread 38 of the bushing 38. The drill head blades are shown schematically by 42. 8 is held in a rest position by a bar 44 supported by a guide 44 coupled to a cradle support 43. It includes a cylinder 45 which slides a slider 46 at its U-fork 47 end to hold the drill head 40 pressed against a support 43. Slider 46 a U-fork 47 rear the part engages a substantially rectangular area 48 of the drill head and prevents it from being axially displaced and rotated. The correct positioning of the drill crown 40 with respect to the support 43 or supporting device 44 is further ensured by a tubular protrusion 49 of the support device 44 firmly coupled to the supporting device 44 by drilling 38 into the drill crown 40 and lowering the force cylinder 45 and associated slider 46. and by rotating the entire tool holder in the same direction as the sleeve 38 to the drill crown 40, the rotary drive described above starts to rotate and drills the hole from which the worn bricks have been removed by the previously extended lips 20. The axial movement of the entire tool holder 9 is obtained again in the form of a shotgun.

FIG. Fig. 8 shows in detail only the head 16 as well as the front portion of the pinion shaft with the sleeve 28, and the clutch 28 connecting the pinion shaft 13 to the drive shaft 14, analogous to the construction of fig. 2 and FIG. 3.

After drilling the entire tool holder 9 with the drill crown 40 mounted on it, it returns to the position axially in which the drill crown 40 occupies FIG. 8, near the support 43 and the support device 44. After locking the drill crown 40 with the slider 46 and holding the drill crown in the area 48 with a fork 47, the tube 26 is rotated in the opposite direction with the sleeve 38 from the drill crown 40. the head 16 is again released from the drilling tool 40. A restriction 50 of the end 23 of the head 16 facing the crown and also the front 51 is provided for limiting the passage of the tube 23 with the sleeve 38 to the drill crown 40, as well as to protect the drill crown 40 at the back of the drill crown 40. Instead of circular profile threads 39 and 41, respectively loaded stroke threads, such as trapezoidal profile threads, may be used.

Claims (11)

DEFINITION OF INVENTION A device for removing worn-out brick or die-casting moldings for metallurgical tanks with a device for expanding into the molded brick or die, characterized in that the expanding device (20) is mounted on an axially movable support or, in particular, a bellows (8) and that the tool holder can be connected to at least one gear. Device according to claim 1, characterized in that the tool holder (9) has an axial cavity (12) in which a rotatable pinion shaft (13,14) is mounted and that the pinion shaft (13) is coupled with at least two, preferably three, movable pinions. the teeth of the radially extending lips (20). 3. A device according to claim 1 or 2, characterized in that the rotatable tool holder (9) is mounted on a support or batten (8) and its rotation on the support or batten can be recorded. 4. Device according to claim 1,2 or 3, characterized in that a rotary drive can be connected to the gear shaft (13,14) and the impact holder, namely the hammer (10), can be connected to the tool holder (9). Device according to one of Claims 1 to 4, characterized in that the gear shaft (13,14) has at least one axial channel (15) which is connected to the nozzles or outlet openings (17) adjacent to the free tool holder (9). end, and with a liquid tip. 6. Apparatus according to claim 5, characterized in that the fluid supply of the support or batten (8) has an annular passage (19) which is connected to the axial passage (15) of the gear shaft (13,14) by radial holes (18). Device according to one of Claims 1 to 6, characterized in that the axially displaceable pinion shaft (13) is connected to the drive shaft (14) by means of pivoting teeth (28). Device according to one of Claims 1 to 7, characterized in that the head (16) of the tool holder (9) having a lip (20) is connected by a thread (29) to a part of the tool holder (9) which can be disengaged with impact gear (10). Device according to claim 8, characterized in that the connecting thread (29) of the tool holder (9) with the head (16) has a thread core diameter which is larger than the outer diameter of the gear shaft (13) connected to the drive shaft (14). Device according to Claim 8 or 9, characterized in that the thread (29) is provided with a sleeve (38) which on its outside has a thread of a circular or trapezoidal profile (39), on which the tool holder (9,16) is supported (51). ) the drill head (40) can be screwed on. Device according to claim 10, characterized in that the drilling head (40) which is screwed on the bushing (38) has a torsion locking mechanism (48) which interacts with the release (46,37) released by the support (43,44).