JPH0380845B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for guiding and changing an immersion lance intended for immersion into a metal melt.

Processes for desulfurizing iron melts by adding substances which form various compounds with the sulfur contained in the iron melt under reducing conditions at high temperatures have been known for several decades. A suitable amount of said substance in powder or granule form is introduced into the melt by means of an immersion lance and a carrier gas, preferably argon.

This kind of method and equipment for desulfurizing iron melt is
Described in EP-A-O 013550. The device for introducing the immersion lance into the melt is EP-A-O.
056942 and EP-A-O 056944.

However, these known types of devices suffer from a number of problems which have not been satisfactorily solved to date. One of the problems is that the lance must be held as rigidly as possible during lance immersion to avoid unwanted or harmful vibrations in the device. A second problem that commonly occurs is that the lances cannot be changed as quickly as desired, resulting in slow processing of successive ladles of molten steel.

The present invention has been made to overcome the above-mentioned shortcomings of the prior art, in that the lance can be quickly replaced and the lance is held particularly firmly and immovably during immersion. Additionally, no leads to the coupling mechanism are required to connect the lance to the gas supply head.

According to the invention, at least two lances comprising a mount rotatable about a longitudinal axis O by means of a drive and a bifurcated suspension for the lance, movable vertically along the mount, are provided. a carriage, a gas supply head body, and a connection socket inserted from above into a hole formed vertically through the center of the gas supply head body, held in the hole, and spring-biased downward. a gas supply head; a drive device provided for each lance carriage and having a drive motor for raising and lowering the lance to which the gas supply head is attached; A lance carriage pin is attached to a provided arm facing vertically upward, and a fixing pin is attached to a fixing frame so as to face vertically downward, and the lance carriage pin and the fixing pin are each attached to each other. are diagonally opposed to each other, and the gas supply head body has pin holes around the through hole for receiving the lance carriage pin and the fixing pin, and the fixing pin is disposed in all of the pin holes. When the pin and the lance carriage pin are received, releasing the mutual lock between the gas supply head and the fixed pin causes the gas supply head and the lance carriage pin to become mutually locked; a mutual locking device that performs the opposite operation; and a mutual locking device provided on the fixed frame that operates the mutual locking device to alternately mutually lock the gas supply head and the fixed pin and mutually lock the gas head and the lance carriage pin. a storage device for supporting new or used lances; and a transfer device comprising a lance transport device and a lance transfer device for transferring the lance from said storage device to a lance carriage and vice versa. Provided is a device for guiding and changing an immersion lance for immersion in a metal melt, characterized in that it comprises:

Various objects and advantages of the present invention will be better understood by those skilled in the art upon reference to the accompanying drawings. Similar reference numerals are given to similar elements in several figures.

Now, to describe the present invention with reference to the drawings, the lance replacement device shown in FIG. It consists of a lance conveyor carriage 34.

In the embodiment shown in FIG. 1, lance reservoir 30 rotates about a vertical axis. Such a lance reservoir 30
is disclosed, for example, in EP-A-O 056942. When a lance reservoir 30 of this type becomes full with used lances, it is replaced with a lance reservoir holding new lances.

An empty suspension 48 is shown in FIG. 1 without holding the lance 32. Related Lance 3
2 is suspended from a lance conveyor carriage 34. If this lance 32 is unused, the lance conveyor carriage 34, which is movable along the rails 46, 46', is moved to the mounting device 31 and attached to the lance carriage 38 as shown in FIG. Move to position.

As can be seen from FIG. 2, the lance conveyor carriage 34 is suspended via rollers from rails 46, 46' formed by H-shaped garters. The mount device 31 includes a mount 42 whose main part is rotatable around a vertical axis O, and lance carriages 38 and 40 which hold a lance and are movable in the vertical direction.
It consists of

Figure 2 shows two lances on each side of the mount 42.
Carriages 38 and 40 are shown attached.
The two lance carriages 38, 40 have two horizontal arms 80, 82 and 80', 82' (see also FIG. 1) and a bifurcated lance suspension 36, 36'.
It has two lance carriages 38,
40 is mounted 4 by two chain drives 106, 108 and air motors 110, 112.
It is movable up and down along 2. As an alternative to two lance carriages, it is also possible to attach four lance carriages arranged in a cross to the mount. Compressed air for the air motors 110, 112 is supplied to a mount 42 that rotates about a vertical axis O.
is fed through a rotating connection 114 on the top of the.
Rotational movement of mount 42 is generated by air motor 116 (or a tandem drive as described below). Due to this rotational movement of the mount 42, the lance 32,
Both positions of 32' are swapped.

Lance 32 to lance conveyor carriage 34
Transfer from the lance carriage 38 to the suspension 36 or to the reservoir suspension 48 and vice versa is effected by a lance transfer device 44 shown in FIGS. 3-5. These figures show the reception of a new lance 32 from the reservoir suspension 48 in three stages. As seen in Figure 1,
The lance 32 is suspended from a bifurcated reservoir suspension 48 by a crossed trunnion 72. The lance transfer device 44 consists of a bifurcated swivel arm 50 having a notch 52 that serves to accommodate the trunnion 72.

Swivel arm 50 is attached to lance conveyor carriage 34 at two pivot points 54,60. One pivot point 54 is the carriage 34
strap 58 pivotable about a fixed point 56;
The other pivot point 60 is at the free end of the rotating arm 62. The rotating arm 62 is the drive shaft 6
It is attached to 4. The rotary arm 62 is rotated by a drive shaft 64 between limit positions defined by two stoppers 66 and 68. As a result, the swivel arm 50 performs a combined rotational and translational movement, and the notch 52 of the swivel arm 50 moves along a curve 70 shown by a dashed line. The advantage of this lance transfer device 44 is that when the swivel arm 50 is moved from the position shown in FIG. 3 to the position shown in FIG. When the swivel arm 50 picks up the lance from the suspension 48 (corresponding to the trajectory 70'' from the position shown in FIG. 4 to the position shown in FIG. 5) with a large horizontal and vertical movement, the minimum The notch 52 is raised only by the height, and therefore the driving force required for the drive shaft 64 is also small.Moreover, the track 70''
The horizontal distance is long enough to keep the lance sufficiently separated from the lance carriage. Another great advantage of this lance transfer device 44 is that the rotating arm 62
The swivel arm 50 is self-stabilized in the two limit positions shown in FIG.
When supporting the drive shaft 64, the swivel arm 50 naturally maintains its position even if the drive shaft 64 is freed, so that the drive motor (not shown) of the drive shaft 64
This is especially important from a safety point of view when a machine breaks down.

When the lance 32 is lifted from the reservoir suspension 48 as shown in FIGS. 3-5, the conveyor
The carriage 34 moves along rails 46, 46'. Then it comes to a position opposite Lance Carriage 38. The lance 32 is then attached to the suspension 36. This is done in the reverse manner of the operation when picking up the lance, as shown in FIGS. 5-3. In this way, the state shown in FIG. 2 is reached.

The lance carriage 38 is then raised by the chain drive 106 from the position shown in dashed lines in FIG. 6 to the position shown in solid lines. In this position, the immersion lance 32 is a carrier of the material to be treated.
It is connected to the gas supply device 102. Note that the treatment substance of this gas supply device 102 is injected into the metal melt via an immersion lance 32. This gas supply device 102 preferably consists of an articulating tube. In other words, this joint tube consists of rigid tubes 10 interconnected by joints.
It is made up of 4. The rigid tube 104 at one end thereof is connected to the lance 32 by a connecting socket 103 and a gas supply head 74.

Gas supply head 74 shown in vertical section in FIG.
is known and is described in detail in EP-A-O 056942. This gas supply head 74
comprises a gas supply head body, a connection socket 103 which is inserted from above into a hole formed vertically through the center of the gas supply head body, is held in the hole, and is biased downward by a spring. Consisting of However, according to the invention, this gas supply head 74 can be operated by a pneumatic cylinder 94 such that it can be moved up and down with the lance after the lance 32 is sealingly connected to the connection socket 103 (FIG. 10); , is configured to be held by a fixed frame 105 on the upper side of the carriage 38 (FIG. 2).

For this purpose, the lance, arm 8 of the carriage 38
0,82 (80', 82') have two vertical lance carriage pins 79, 78 (or 76'7).
8') are provided respectively (see Figure 2),
These lance carriage pins are offset from each other as shown in FIG. On the other hand, frame 1
05 is provided with two vertical fixing pins 86, 88, which are arranged diagonally opposite the lance carriage pins 76, 78. The gas supply head 74 also has four vertical pin holes 76a, 78a, 86a and 88.
a (see FIG. 8), and when these pin holes are in the position shown in FIG.
6 and 88 are arranged to be received in these pin holes. Four pins 76, 78, 86,
88 each has a rectangular notch 84. The gas supply head 74 can be interlocked to the fixing pins 86, 88 or the lance carriage pins 76, 78 by means of this notch 84 and an interlocking device to be explained later.

Gas supply head 74 interlocks with lance carriage pins 76, 78 or locks pins 86, 8.
8 is selected by moving an interlocking device 90 as shown in FIG. This interlocking device 90 mainly consists of two parallel sliding latches 90a, 90b. The slide latches 90a, 90b are horizontally movable through the body of the gas supply head 74 when they are level with the fixed pin and the lance carriage pin notch 84. Sliding latch 90a,
90b is provided with a recessed portion 73 and an edge 75. Depending on the position of the sliding latches 90a and 90b, these recessed portions 73 and edges 75 either trap two diagonally opposing pins within the notches 84 by the edges 75, or Alternatively, the concave portion 73 is arranged so as to release the two pins. In FIG. 8, the fixing pin 86,
88 is free, but lance carriage pin 7
6, 78 are connected to the gas supply head 74 via sliding latches 90a, 90b.

As shown in FIG. 8, the sliding latches 90a, 9
0b is actuated by an air cylinder 94 which is fixed in place, and the plunger 9 of this air cylinder
8 engages the space between the two sliding latches 90a, 90b, but does not impede the vertical movement of the gas supply head 74.

Figure 9 shows the gas supply head 74' and pins 76,7.
8 or 86, 88 and another embodiment of the interlocking device is shown. In this embodiment, the interlocking device comprises a rotatable swivel latch 92. This swivel latch, like the sliding latch, has a recess 73' and a lip 75', and has lance carriage pins 76, 78 with cutouts 84 and fixed pins 86, 8.
8, depending on the angular position of the swivel latch 92, fixes the gas supply head 74' to the fixed pins 86,88 or to the lance carriage pins 76,78. The swivel latch 92 is actuated by a fixed but still pivotally mounted air cylinder 96. air cylinder 9
6 has an actuation plunger 100 which rotates the swivel latch 92 in the direction of the arrow but does not interfere with the vertical movement of the gas supply head 74'.

In the position shown in FIG. 6, the cylinder 94 or 96 is actuated to release the gas supply head 74 from the fixed pins 86, 88 and interlock it to the lance carriage pins 76, 78 (in the fixed position of FIG. 8). The lance 32 can then be lowered together with the gas supply head 74 and the connection socket 103 (FIG. 10);
The lance is immersed in a metal bath (not shown). That is, the lance carriage 38 and the lance 32 contained therein are lowered by the chain tensioning devices 106, 108. Scrap supply head 74 and lance 3
The sealing device 107 (see FIG. 7) of the gas supply head 74 ensures the necessary sealing connection between the connecting socket 103 and the domed upper end of the lance 32 during the interlocking period between the two. . Further, in the vertical movement of the lance 32, the lance 32 and the gas supply device 1 are
02 continuous connection is guaranteed. The advantage of this articulation is that it eliminates the need for suspended flexible conduits which were previously required and which were always hazardous.
Another advantage is that the operation of connecting the lance 32 to the gas supply device 102 is completely automatic, as well as the air cylinders 94 or 96 fixed in place.
It is to be carried out by.

Figures 11 and 12 show the used lance 3.
2 shows a first possible method for removing the lance 2 and replacing it with a new lance 32'. That is, used lances 32 are transferred by lance conveyor carriage 34 to lance storage 30 (FIG. 1).
The new lance 32' is then placed under the gas supply head 74 by rotating the mount 42 180 DEG about its longitudinal axis O. A new lance 32' is then connected to the gas supply head 74 and immersed into the steel melt. Meanwhile, the lance conveyor carriage 34 returns the old lance to the reservoir 30 and retrieves a new lance from the reservoir 30, waiting again at the mount 42. During this time, the submerged lance becomes old and is pulled up and released from the gas supply head 74, and the lance is removed from the mount 4.
2 has been rotated 180° and the empty suspension system 3 mentioned above
6, a new lance 32 is given from the lance conveyor carriage 34 that has been waiting until now.

Another advantageous lance replacement method is described in which the gas supply head 74 is mounted on a fixed frame 105 above the lance 32' seen in FIG. This will make the lance replacement process even easier.

In FIG. 11, rotation of vertical mount 42 about longitudinal axis O is accomplished by air motor 116 and gearing 118. However, it is not limited to this. 13 to 16 show a particularly advantageous tandem drive. In this embodiment, by actuating each cylinder 150, 152, the swing lever 154 can be driven in three stages by an angle of exactly 90 degrees.

The piston rod of the first air cylinder 150 is pivotally connected to a swing lever 154 . This swing lever 1
54 is fixed to the longitudinal axis O of the mount 42 with a wedge plug 158. The piston rod of the second air cylinder 152 is pivotally attached to the fixed frame 105. These two air cylinders 150 and 152 are connected by a T-shaped yoke 156 so as to be parallel to each other. The center rod of this yoke 156 is rotatably supported by a center bush 162 via a roller bearing 160. Note that the swing lever 154 is fixedly connected to a central bushing 162 (see FIG. 16). As can be understood from this figure, the yoke 156 and the swing lever 154 are made double and are arranged above and below the cylinders 150 and 152.

The operation of the tandem drive is clearly illustrated in FIGS. 13 to 15. In FIG. 13, when the piston rod of cylinder 152 enters cylinder 152, swing lever 154 rotates through an angle of 90 degrees. This is because the yoke 156 is rotated about the longitudinal axis O, and the stationary cylinder 150 is rotated accordingly.
(that is, the piston rod remains extended) causes the swing lever 154 to rotate. The swing lever 154 is thus placed in the position shown in FIG. 14, and the mount 42 is rotated through an angle of 90 degrees.
The piston rod of cylinder 150 is then withdrawn from the position shown in FIG. 14, and a further rotation of 90 DEG occurs as a result of the cylinder 152 and yoke remaining unchanged in position (see FIG. 15).
Of course, the order of operations can be reversed. That is, cylinder 1
50 is activated first, followed by cylinder 152. Note that the T-shaped yoke 156 is pivotally connected to the cylinders 150 and 152.

Figures 17, 18 and 19 show the lance
Three ways of driving the swivel arm 50 of the conveyor carriage 34 are shown. In Figure 17, the lance conveyor carriage 34 is connected to the rails 46, 4.
Swivel arm 5 only when in both end positions of 6'
The fact that 0 only needs to be activated is utilized. For this reason, transmissions 122 and 12
6 drive motors 120 and 124 are provided at the two end positions, in which the motors 120 and 124 are automatically coupled to the drive shaft 64 of the lance transfer device 44.

FIG. 18 shows one motor 128 with a transmission 130. FIG. In this case, a splined shaft 64' corresponding to the drive shaft 64 extends over the entire trajectory of the lance conveyor carriage 34.

FIG. 19 shows a motor 1 with a transmission 134 mounted on the lance conveyor carriage 34 itself.
32 is shown. Therefore, the energy is transferred to the flexible lead 1
36 to the motor 132.

The drive for advancing the lance conveyor carriage 34 consists of a combination of an air motor 140 and a chain tensioner 142.

FIG. 20 shows the rail 138' sloped according to the height difference between the suspension 36 of the lance carriages 38, 40 and the lance reservoir 30. Even in such a case, the drive shaft 64 of the swivel arm 50 of the lance conveyor carriage 34 is designed to be in the horizontal direction.

FIG. 21 shows the bearing 1 suspended from the frame 172.
A lance reservoir 170 is shown rotatable about a longitudinal axis relative to this frame 172 by 74 . The rotation of the lance reservoir 170 in order to position the required lance 32 or empty suspension 48 opposite the carriage 34 is accomplished by, for example, a gear 178 driven by an electric motor and a toothed rim 176 (the 22nd
(see figure). This toothed rim 176 is fixed by a bearing 174 to the upper portion of a bushing 180 which is rotatably mounted to the frame 172.
The upper end of the central shaft of the lance reservoir 170 is suspended from this bush 180. This suspension is simply accomplished by two mutually opposing support projections 182 formed at the upper end of the central axis of the reservoir. The opposing support protrusions 182 are supported by a corresponding clip 184 provided on the inside of the bushing 180. Thus, when the bush 180 is rotationally driven by the gear 178, the reservoir 170 also rotates with the bush 180 about its axis. However, the reservoir 170 is pulled up via the cable winch 186 and cable 188 to disengage the support projection 182 from the clip on the bushing 180, and then rotated about 90 degrees and pulled down again (a second
2), the reservoir 170 can slide downwardly out of the bushing 180. A new reservoir 170 is then raised from the lower floor. Then, a new reservoir 170 is suspended from the bush 180.

To remove the reservoir 170 from the bush 180,
It is of course also possible to rotate the bush 180 instead of rotating the reservoir 170.

Compared to the reservoir 30 shown in FIG. 1, this reservoir 170 takes up less space, especially in the vertical direction, since it only needs to be pulled up and removed from the clip 184. has advantages.

FIG. 23 is a diagram showing a modified example of the apparatus shown in FIG. 1. However, the mounting device 31 is the same as that of FIG. A lance transport device 200 supplies a lance 32 to this mounting device 31 . This lance transport device 200 is movably suspended from a pair of rails 202 via rollers (see also the schematic plane in FIG. 25), and includes a mounting device 31 and a storage device (single) hook 204). It consists of a group of hooks 206 that move back and forth between the two. A large number of hooks 206 that serve to support the lance are
As shown in the figure, there are four, arranged in a star shape. The central rings of these hooks 206 only rotate about a vertical central axis of symmetry, so that the lance 32 can be moved from the device 200 to the lance carriage 38.
Or, for sending and receiving in the opposite direction, the device 200
This is done by raising or lowering the lance carriage 38 when it is in its left-hand final position in FIG.

A single hook 204, corresponding to the lance reservoir 30 of FIG. This hook 204 transports new and used lances between the position shown in FIG. 23 and the floor below this position. Transfer of the lance between the lance transport device 200 and the hook 204 is accomplished by raising or lowering the hook 204 when the lance transport device 200 is in its final position on the right in FIG.

Figures 24 and 26 show lance reservoir 230.
This is an example in which the mounting device 31 is placed directly near the mounting device 31. Lance transport device 23 of this embodiment
2 does not move back and forth along the rail,
It rotates around the vertical axis as shown by arrow 236. The lance transfer device 23 transfers the lance 32.
4, this lance transfer device 234
The operation of the swivel arm 5 in the device shown in Fig.
It has the same behavior as 0. The rotation angle of the lance transport device 232 depends on the position of the lance reservoir 230.
For example, if the lance reservoir 230 occupies the position shown in solid lines in FIG. All you have to do is move. However, the lance reservoir 230
When the transport device 23 occupies the position indicated by the dashed line,
2 must be rotated through an angle of 180°.

27 and 28 show a casting ladle 240
This shows the lance 32 immersed in this. The frame 231 shown in FIGS. 27 and 28 is a pair of rails 2.
44 between the two positions indicated by the solid line and the dashed line shown in FIG. The frame 231 can thus be moved without removing the gas supply device 102. Connection 24 to the supply source of the gas supply device 102
2 is fixed at a predetermined position. Gas supply device 1
02 is a frame 2 by articulating the individual tubes.
31 movements are allowed. Furthermore, FIG. 27 shows how the gas supply device moves between the position shown in solid lines and the position 102' shown in dash-dotted lines during the process of dipping and withdrawing lance 32.
When the frame 231 moves from the right side to the left side, the gas supply device 102 leaves the solid line position and moves to the dashed-dot line position 10.
2''. Of course, the structure shown in FIGS. 27 and 28 can be applied to any of the various embodiments described above.

[Brief explanation of drawings]

Figure 1 is a plan view of the entire device for guiding and exchanging lances, Figure 2 is a side view of the lance transfer device and lance carriage, and Figure 3 is a view of the lance transfer device when the swivel arm picks up the lance. 4 shows the second step in the lance picking operation, FIG. 5 shows the third step, FIG. 6 shows the operation of connecting the lance to the gas supply head, and FIG. FIG. 8 shows a gas supply head with an interlocking device, and FIG.
FIG. 9 is a plan view showing a second example of the interlocking device; FIG. 10 shows the gas supply head being lowered into the steel melt of the applied lance; FIG. , 11 and 12 show the vertical mount being rotated about its longitudinal axis, and figs. The column drive is shown in three different angles, FIG. 16 being a side view of the drive in the position shown in FIG.
Figure 17 shows the structure for operating the swivel arm of the lance conveyor carriage with two fixed motors, and Figure 18 shows the structure for operating the swivel arm of the lance conveyor carriage.
Figure 19 shows a structure in which the swivel arm of a carriage is operated by a single fixed motor and a spline shaft; Figure 20 is a side view of the lance conveyor carriage when the track rails for the lance conveyor carriage are inclined, and Figure 21 shows the structure of the suspended lance reservoir, partially from the side and partially from the side. 22 is a plan view of the lance reservoir of FIG. 21, FIG. 23 is a schematic side view of a second embodiment of the device for guiding and changing lances, and FIG. 24 is shown in vertical section. is the third part of the device for guiding and changing the lance.
25 is a schematic plan view of the embodiment shown in FIG. 23; FIG. 26 is a schematic plan view of the embodiment shown in FIG. 24; and FIG. 27 is a rotatable mount. FIG. 28 is a schematic side view showing an embodiment in which the device is mounted on a movable frame, and FIG. 28 is a schematic plan view thereof. In addition, in the figure, numerals 30, 170, 204,
230... Storage device, 32, 32'... Lance,
34...Lance conveyor carriage, 38,4
0... Lance carriage, 36, 36'... Lance suspension device, 42... Mount, 44... Lance transfer device, 46, 46'... Rail, 50... Swivel arm, 64... Drive shaft, 76 ,78...
Lance carriage pin, 86, 88... Fixed pin, 74... Gas supply head, 90, 92... Mutual locking device, 156... T-shaped yoke, 180...
... Bush, 184 ... Clip, 186 ... Cable winch, 188 ... Cable, 200,2
32...Lance transport device.

[Claims]

1 Si: Iron alloy containing 4.0 wt% or more is cast from a molten state by a thin slab casting method at 1°C/sec or more, 10 ⁴
Rapidly solidifies at a cooling rate of less than ℃/sec to a thickness of 30
Obtain a thin slab of ~1mm and heat this thin slab to 600℃~800℃
Heating to a temperature range of 30% reduction in that temperature range.
A method for producing a thin plate of a high-silicon iron alloy, which comprises performing the above hot rolling, followed by pickling, cold rolling, and annealing. 2. The method for producing a thin plate of a high-silicon iron alloy according to claim 1, wherein the iron alloy has a composition containing Si: 4.0 to 7.0 wt%. 3 Iron alloy contains Si: 8.0~10.0wt%, Al: 4.0~
The method for producing a thin plate of a high-silicon iron alloy according to claim 1, characterized in that the composition contains 7.0 wt%. 4 Iron alloy contains Si: 4.0~8.0wt%, Al: 2.0~6.0wt%
%, and Ni: 1.0 to 5.0 wt%.

Claims (1)

fixing pins 86, 88, the gas supply head body includes the lance carriage pins 76, 78 and the fixing pins 86, 8.
Pin holes 76a, 78a, 86a, 8 that accept 8
8a around the through hole, and the fixing pins 86, 88 and lances are provided in all of the pin holes 76a, 78a, 86a, 88a.
When the carriage pins 76, 78 are received, the gas supply head 74 and the fixed pin 8
6 and 88, the gas supply head 74 and the lance carriage pin 76,
a mutual locking device 90:92 that mutually locks the gas supply head 78 and vice versa; and a mutual locking device 90:92 provided on the fixing frame 105 and fixing the gas supply head 74 and Interlocking with pins 86, 88 and gas supply head 74 and lance carriage pins 76, 78
an actuating device 94 for alternately locking the
98:96,100, a storage device 30:170:204:230 for supporting a new or used lance, and a lance from said storage device 30:170:204:230 to a lance carriage 38,40 or vice versa. In order to transfer the lance transport device 4
Transfer device 34, 44, 46: 200, 202, 206: 2 consisting of 6, 34: 200: 232 and lance transfer device 44: 206, 204: 234
Apparatus for guiding and changing an immersion lance for immersion in a metal melt, characterized in that it comprises: 32, 234. 2. The lance transfer device 44:234 has a free end of a rotating arm 62 which is attached to a drive shaft 64 and driven to rotate, but whose rotation range is limited by two stoppers 66 and 68, and a pivotable strap 58. The free ends of the two pivot points 60, 54
It consists of a bifurcated swivel arm 50 that is suspended from the swivel arm 50 and has a notch 52, and the relationship between the two pivot points 60, 54 and the stoppers 66, 68, as well as the strap 58 and the rotating arm 6.
By selecting two lengths, the swivel arm 50 is made to be self-stabilizing when the rotating arm 62 is in either of its two limit positions, and the swivel arm 50 When picking it up, use the swivel arm 5.
The notch 52 of 0 draws a trajectory 70'' in which it is lifted only to a minimum height and moves largely in the horizontal direction, and when the swivel arm 50 has no-load stroke, the trajectory 70 moves largely in both the horizontal and vertical directions. A device for guiding and replacing a dipping lance for immersion in a metal melt according to claim 1, which is drawn in the form of a rail 46.
for immersion in a metal melt according to claim 2, comprising a lance conveyor carriage 34 movable along the lance conveyor carriage 34, on which the lance transfer device 44 is carried. Device for guiding and changing immersion lances. 4. The lance transport device 232 comprises a column 232 which is fixed in a predetermined position but rotatable about a vertical axis, and the lance transfer device 234 is supported on the column 232. Apparatus for guiding and changing an immersion lance for immersion into the metal melt described. 5 The lance transport device 200 has a pair of rails 2
a group of hooks 2 disposed in an annular manner movable along 02 and rotatable about a vertical axis;
Apparatus for guiding and changing an immersion lance for immersion in a metal melt according to claim 1, consisting of .06. 6. The mutual locking devices 90:92 are provided on the gas supply head body and have sliding latches 90a, 9 having recessed portions 73, 73' and edges 75, 75'.
0b or swivel latch 92, and the fixing pins 86, 88 and the lance carriage.
A notch 84 is provided in each of the pins 76 and 78, and the fixing pin 8
6,88 and lance carriage pin 76,7
The sliding latch 90a is attached to the notch 84 of 8.
90b or said edge 7 of the swivel latch 92
5, 75' are engaged or the sliding latch 90
The metal melting device according to claim 1, wherein the fixing pins 86, 88 or lance carriage pins 76, 78 are located in the recesses 73, 73' of the swivel latch 92. A device for guiding and changing a dipping lance for dipping into objects. 7. For immersion in a metal melt according to claim 1 or 6, wherein the lance carriage pins 76, 78 and the fixing pins 86, 88 are each diagonally opposed to each other. device for guiding and replacing immersion lances. 8. The actuating device 94, 96 consists of at least one fixed air cylinder 94:96, the actuating plunger 98:100 of which does not interfere with the vertical movement of the gas supply head 74. Device for guiding and changing the immersion lance for immersion into the melt. 9 Air motor 11 for moving lance carriages 38, 40 along vertical mounts 42
Device for guiding and changing an immersion lance for immersion in a metal melt according to claim 1, having a chain drive 106, 108. 10. Device for guiding and changing an immersion lance for immersion in a metal melt according to claim 1, wherein four lance carriages 38, 40 are provided in a cross-shaped arrangement on a mount 42. 11. Apparatus for guiding and changing an immersion lance for immersion in a metal melt according to claim 3, wherein the advancement of the lance conveyor carriage 34 is effected by an air motor 140 and a chain drive 142. 12 Two motors 1 installed at fixed positions to drive the drive shaft 64 of the lance transfer device 44
20, 124 and transmissions 122, 126 are provided, the lance conveyor carriage 34
for immersion in a metal melt according to claim 3, wherein one of the motors as well as its transmission is connected to the drive shaft 64 when the motor occupies one of two limiting positions. Device for guiding and changing immersion lances. 13 The drive shaft 64 of the lance transfer device 44 is in the form of a spline shaft 64', and the spline shaft is connected to one motor 12 mounted at a fixed position.
Device for guiding and changing an immersion lance for immersion in a metal melt according to claim 3, which is driven by a transmission 8 and a transmission 130. 14. Claim 3, wherein the drive shaft 64 of the lance transfer device 44 is driven by a motor 132 attached to the lance conveyor carriage 34.
Apparatus for guiding and changing an immersion lance for immersion in a metal melt as described in 1. 15 The drive device for rotating the mount 42 about the longitudinal axis O consists of two parallel air cylinders 1 interconnected by a T-shaped yoke 156.
The piston rod of the first cylinder 150 is connected to the mount 4 via a swing lever 154.
2. Device for guiding and changing an immersion lance for immersion in a metal melt according to claim 1, wherein the piston rod of the second cylinder 152 is articulated with the fixed frame 105. 16. Device for guiding and changing immersion lances for immersion in metal melts according to claim 1, wherein said storage device comprises a lance storage 30 of the rotatable type resting on the floor. 17. Device for guiding and replacing immersion lances for immersion in metal melts according to claim 1, wherein said storage device comprises a lance storage 170 of the suspended and rotatable type. 18 The upper portion of the lance reservoir 170 has a plurality of support protrusions 182 on its outer circumference, and the rotatable bushing 180 has a plurality of support protrusions 182 on its inner circumference.
A number of clips 184 are provided to receive and support the lance reservoir 170 from above, and by relatively moving the lance reservoir 170 and the bush 180 up and down and rotating them, the lance reservoir 170 can be moved up and down. Apparatus for guiding and changing an immersion lance for immersion in a metal melt according to claim 16, adapted to be removed from a bushing 180. 19 The storage device is a hook 20 suspended from the cable 208 of the cable winch 210.
5. Device for guiding and changing an immersion lance for immersion in a metal melt as claimed in claim 5. 20 The rotatable mount 42 is connected to the rail 24
Device for guiding and changing an immersion lance for immersion in a metal melt according to claim 1, which is mounted on a frame 231 movable along a frame 231.