JPS5831022A - Converter slantly moving device - Google Patents

Abstract

PURPOSE:To reduce construction expenses, and to elevate the frequency of use of a titled device, by providing a gear between 2 converters on which a trunnion shaft has been placed on the same horizontal shaft line, so that a gear rotating shaft and the trunnion shaft are intermitted freely by a clutch mechanism. CONSTITUTION:For instance, in case of operating a converter 10 only, a driving side trunnion shaft 11 of the converter 10 is connected to a rotating shaft 30 by a clutch mechanism 38, and on the other hand, a driving side trunnion shaft 21 of a converter 20 to be halted, and the rotating shaft 30 are disconnected by a clutch mechanism 38'. Subsequently, when a motor 37 is started, its rotation is transferred to the shaft 11, and the converter 10 is slantly moved in a prescribed direction. In this case, connection of the shaft 11 and the rotating shaft 30 of a gear 31 is executed in the following way. That is to say, when a hydraulic pressure cylinder on a beam 44 is operated and a lever 42 is turned clockwise, a joint member 38b installed to the shaft 30 is pushed by the lever 42, moves forward, is engaged with a joint member 38a installed to the shaft 11, and is connected.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for tilting a converter.

It is well known that a converter such as a top-blown converter or a bottom-blown converter is equipped with a tilting device because it is necessary to tilt the converter when charging hot metal or tapping the steel. FIG. 1 is a schematic diagram showing an example of a conventionally used tilting device, in which a furnace body 1 is fitted into a trunnion ring 2, and a pair of trunnions protrudes from the trunnion ring 2 in the radial direction. Bearing 5 with shaft 3.3' mounted on bearing stands 4, 4'
, 5', the furnace body 1 is rotatably supported, and a large tilting gear 6 is attached to the tip of the trunnion shaft 3 on the driving side of the trunnion @3.3'. , this large gear 6 is connected to a motor 8 via a reducer 7.
The motor 8 is meshed with a small drive gear 9 connected to the gear 6.
9, it is configured to be tiltable in any direction.

By the way, problems with the conventional tilting device as described above include the following points. In other words, a converter is generally operated by installing one converter or three converters, with one converter shutting down and the others operating, but conventional tilting equipment only tilts one converter. Therefore, when the converter is shut down, the tilting device must also be shut down, and the period of shutdown of the converter can extend to one to two months, so the use of the tilting device is difficult. #II#'' is low, it is not economical, and since the conventional tilting device has to be installed in each converter, the construction cost of the entire converter including the attached equipment is very high. In addition, the trunnion shafts 3 and 3' may bend slightly due to the weight of the furnace body l, but with the conventional tilting device, the large gear 6 is attached to the trunnion shaft 3. Because of this, the large gear 6 moves up and down during rotation, and as a result, the tips of the teeth of the large gear 6 and the tips of the small gear 9 interfere with each other, and there is a risk that one or both of them may break. - In order to prevent this kind of danger, a structure in which the small gear 9 is suspended has been proposed, but such a structure has the problem that the overall configuration is complicated and the construction cost increases. It is a device that can be tilted left and right within a range of 96 degrees or less (total 180 degrees or less) from the center, but with conventional tilting devices, once installed, the large gear 6 and small gear 9
Since it is not possible to change the part of the mesh that engages with the other parts, wear progresses only in specific parts, leading to the end of the service life prematurely.

As described above, there were various problems with conventional tilting devices, but
The inventors of the present invention conducted extensive research to solve these problems, and found that the converter is operated in a system of two or three converters, and one or two of them are operated. , the large gear and small gear for tilting have a much longer service life of 15 to 20 years, and if the trunnion shaft and the rotating shaft to which the large gear is attached are separated, This invention was achieved by focusing on various points that could prevent unilateral wear by changing the meshing part of the gear with respect to the pinion.

That is, an object of the present invention is to provide a converter tilting device that can reduce the construction cost of the entire converter equipment, eliminate the required space, and increase the frequency of use. .

Embodiments of the present invention will be described below with reference to FIGS. 2 to 4. FIG. 2 is a schematic diagram showing an example of the present invention, and the reference numerals 10 and 20 in FIG. 2 each indicate a converter. The trunnion shafts 11°11', 21, 21' are arranged at predetermined intervals so as to be lined up on the same horizontal axis, and each of the trunnion shafts 11, 11', 21, 2
Each converter 10.20 is rotatably supported by bearings 13, 13', 23.23' provided on bearing stands 12.12', 22.22'. A rotary shaft 30 is arranged between the drive-side trunnion shafts 11 and 21 corresponding to each of the converters 10 and 20 so as to be located on the same axis as these trunnion shafts ii and 2i, and this rotary shaft 30 A large tilting gear 31 is attached to the middle part of the rotary shaft 30, and both ends of the rotating shaft 30 are mounted on bearing stands 32, 32'.
33'. A small gear 34 for tilting is meshed with the large gear 31, and this small gear 34 is connected to a motor 37 via a coupling, a ring 35, and a reducer 36. Therefore, the large gear 31 is connected to the motor 37. 3
7, it can be rotated.

Each trunnion shaft 1 on the drive side in the converter 10.20
1.21 and the rotating shaft 30, there is a clutch mechanism 3B that connects the two in a disconnectable manner.

38' are installed respectively. These clutch mechanisms 38 and 38' have the same construction, and the details of one of the clutch mechanisms 38 are shown in FIG. 3. That is, this clutch mechanism 38 includes a pair of joint members 38m that transmit rotational force by engaging their pawls;
38b, one joint member 38m is attached to the trunnion shaft 11 via a key 39,
The other joint member 38b is attached to the rotating shaft 30 via a slide key 40 so as to be movable in the axial direction of the rotating shaft 30, and is further attached to the trunnion shaft 11.
A locking bracket 41 is formed on the outer surface of the joint member 38& attached to the rotary shaft 30, while a lever 4 (described later) is formed on the outer circumference of the joint member 38b attached to the rotating shaft 30 (b).
A concave groove 43 is formed for engaging the tip end of the two. A beam 44 is installed between the bearing stand 12 that supports the drive-side trunnion shaft 11 and the adjacent bearing stand 32 for the rotating shaft 30.
4 is rotatably provided with a lever 42 whose tip end engages with the concave groove 43 of the joint member 38b to move the joint member 38b 4i1 along the rotation axis 30, and
Hydraulic cylinder 45 for rotating the lever 42
is mounted on the beam 44, and furthermore, on the upper part of the outer surface (the left side in FIG. 3) of the bearing stand 12 that supports the trunnion shaft 11 on the drive side, the tip thereof is attached to the locking bracket 41. A rotatable locking lever 46 that can be locked is added, and a hydraulic cylinder 47 for rotating the locking lever 46 is provided on the beam 44.

By the way, as mentioned above, when two converters are arranged, the general operating system is to operate one of them and leave the other idle.
To explain the case where only the converter 10 on the right side in FIG. The connection between the drive-side trunnion shaft 21 of the converter 20 and the rotating shaft 30, which should be kept in operation, is cut off using the other clutch mechanism 38'. That is, the trunnion shaft 11 and the rotating shaft 30
To explain the connection with FIG. 3, the hydraulic cylinder 45 provided on the hook 44 is operated to connect the lever 4.
2 in the clockwise direction in Fig. 3, the rotating shaft 3
The joint member 38b attached to the trunnion shaft 11 is pushed forward by the lever 42, and the other joint member 38b attached to the trunnion shaft 11 is moved forward by the lever 42.
m, and as a result, the rotating shaft 30 and the trunnion shaft 11
are connected. In this case, each joint member 38m, 38
It is preferable to set a slight clearance on the distal end side of each joint member 38a without completely interlocking the joint members 38a.

38b can be made into a so-called universal joint with no problem even if they are engaged with each other at a slight angle, so even if the trunnion shaft 11 is slightly curved due to the weight of the converter 10, the converter 10 can be When the rotating shaft 30 is rotated to tilt, the rotating shaft 30, that is, the large gear 31, does not move up or down, thus preventing interference between the large gear 31 and the small gear 34 and the resulting breakage of teeth. be able to. Note that when the respective joint members 38m and 38b are engaged as described above, the locking lever 46 is rotated counterclockwise in FIG. 3 by the hydraulic cylinder 47, and the locking lever 46 and the joint member 38m are Needless to say, the engagement with the bracket 41 formed on the outer surface of the bracket 41 must be released. After the above-mentioned members are set as described above, when the motor 37 is started, its rotation is transmitted to the trunnion shaft 11, and the converter 10 is tilted in a predetermined direction.

Next, when shutting down the converter 10, the converter 10
When the lever 42 is rotated counterclockwise in FIG. 3 by the hydraulic cylinder 45 after the lever 42 is brought into an upright position, the joint member 38b attached to the rotating shaft 30 is pushed back by the lever 42, and As a result, the respective coupling members 38m and 38b are disengaged, and the connection between the rotating shaft 30 and the trunnion shaft 11 is severed.

In the state shown in FIG. 4, in which the connection by the clutch mechanism 38 is released, the converter l is maintained in an upright state by its own weight, but the locking lever 4
6 by the hydraulic cylinder 47 in the clockwise direction in FIGS. 3 and 4, and the locking lever 46 is engaged with the bracket 41 formed on the outer surface of the joint member 38m, and the two are connected with a bottle or the like. For example, since rotation of the converter 100 can be reliably prevented, safety can be ensured when repairing the converter IO.

Note that the rotating shaft 30 and each of the trunnion shafts 11.21
Since each of the clutch mechanisms 38 and 38' installed between the This can be done in the same manner as when the converter 10 is tilted or locked in an upright position.

By the way, as is clear from the configuration of the above-mentioned tilting device, if each clutch mechanism 38, 38' is not connected, only the large gear 31 can be freely rotated without rotating the converter 10, 20. Therefore, before connecting either clutch mechanism 38, 38',
1 by a predetermined angle t (for example, 180°), the converter 1
When tilting 0.20, the large gear 31
The part that meshes with the large gear 31 is different from the previous one, so the e-tilting device described above cannot prevent uneven wear and premature end of the service life caused by continuous use of only a specific part of the large gear 31. can.

Although the above embodiment describes an example in which two converters are arranged, the present invention is not limited to the above embodiment. For example, the present invention can also be applied when three converters are arranged and two of them are tilted. In that case, a large gear for tilting is arranged between each converter, and between the rotating shaft of each large gear and the trunnion shaft of each converter, as shown in the above embodiment. In the above embodiment, an example using clutch mechanisms 38 and 38' consisting of two joint members 38m and 38b having pawls was explained, but the clutch mechanism according to the present invention is not limited to the configuration shown in the above embodiments, but any structure may be used as long as it can connect the rotating shaft to which the large gear is attached and the tranio/shaft of the converter in an intermittent manner. It is even more preferable if it functions in the same way as a universal joint under certain conditions.

As is clear from the above description, according to the tilting device of the present invention, the tranios/shafts are arranged on the same horizontal axis, and the tranios/shafts are arranged to be rotated about the horizontal axis between the 92 converters. A large gear for tilting is disposed, and the rotating shaft on which the large gear is mounted is connected in an intermittent manner to the drive side trunnion shaft of the converter via a clutch mechanism. It is sufficient to install one tilting device for each converter,
Therefore, the construction cost of the entire converter including the attached equipment can be reduced, and at the same time, the required installation space can be reduced. In addition, since one of the two converters is always in operation, the tilting device is almost always in operation, which increases the frequency of use of the tilting device, and improves its manufacturing and construction. In addition, the tilting device of the present invention allows the large gear to be moved freely by disconnecting the rotating shaft and the trunnion shaft by the clutch mechanism. Since the converter can be rotated to a certain angle, the meshing part of the large gear with the small gear can be changed arbitrarily when tilting the converter, thus preventing unilateral wear of the large gear and prolonging its service life. be able to. Furthermore, the clutch mechanism
If it acts like a universal joint in the connected state, even if the trunnio/shaft bends slightly due to the weight of the converter, the large gear will not move up or down when the converter tilts, so the large gear and small gear will It is possible to prevent mutual interference with the teeth and the resulting breakage of the teeth.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing a conventional converter tilting device, Fig. 2 is a schematic diagram showing an embodiment of the present invention, Fig. 3 is a detailed diagram showing its clutch mechanism, and Fig. 4 is a schematic diagram of the clutch mechanism. FIG. 3 is a detailed diagram showing a non-coupled state. 10.20... Converter, 11.11', 21.21'.
...Tranio/shaft, 3o...rotating shaft, 31...large gear, 38, 38' river mouth mechanism.

Claims (1)

[Claims] A large gear that is driven to rotate about the horizontal axis is arranged between two converters whose trunnion shafts are electrically distributed so that they are aligned on the same horizontal axis, and a rotating shaft to which the large gear in parentheses is attached. and a trunnion shaft of each of the converters, a clutch mechanism is provided to connect the rotating shafts and the trunnion shafts in an intermittent manner.