JPH0335472Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a tundish tilting device that includes a tilting frame that supports and tilts a tundish, and a drive means that drives the tundish. be.

(Prior Art) In continuous casting equipment, a tundish is used to temporarily store molten steel supplied from a ladle and pour it into a mold at a predetermined flow rate. The tundish basin's hot water pool is covered with a layer of refractory bricks and a refractory coating layer that covers its surface, but the coating layer deteriorates and is severely damaged, so it needs to be replaced every time the tundish is used. The refractory layer is usually replaced every one or two months. When replacing the fire-resistant coating layer of such a tandate,
The fireproof coating layer must be crushed with a demolition machine and the crushed debris must be discharged, but it is not necessary to crush the fireproof coating layer, discharge the crushed debris, or discharge the remaining metal (remains of molten steel) or slag in the tundish. For this purpose, a tundish tilting device is used.

This tundish tilting device consists of a tilting frame that supports and tilts a used tundish taken out of a continuous casting facility, and a drive means that tilts and drives this tilting frame. The tilting device is configured such that one tilting frame is driven by one driving means.

On the other hand, in general-sized continuous casting equipment, the total number of tundishes handled in a day is relatively large, so two tilting devices are usually installed in parallel, with one tilting device supporting the tundishes. While the required work is being carried out, the tundish to be processed next is prepared on the other tilting device, or while the tundish is being tilted with one tilting device to discharge crushed debris, etc., the other The work efficiency is improved by making it possible to crush the fireproof coating layer of the tundish supported by the tilting device.

(Problem to be solved by the invention) In the tundish tilting device as described above, the number of
Since the device tilts a 10-ton tundish, the drive means for tilting and driving the tilting frame is also extremely large and very expensive.
Since two tundish tilting devices, each equipped with such a driving means, had to be installed in parallel, not only did the equipment itself become very expensive, but the overall installation space also became very large.
There was a problem in that a large area of work space had to be secured.

(Means for Solving the Problem) In order to solve the conventional problems as described above, the present invention has two tilting frames that support and tilt the tundish, installed in parallel, and equipped with a motor and a speed reducer. and a tundish comprising one drive means and each drive shaft of the two tilting frames connected through a clutch, and locking means for individually locking both tilting frames so that they cannot be tilted. This paper proposes a tilting device.

(Operation of the invention) According to the above-mentioned tundish tilting device, the tundish is transferred onto either one of the tilting frames which is locked so that it cannot be tilted by the locking means, and the tundish is moved by the dismantling machine used in conjunction with the tundish. After crushing the refractory coating layer, the clutch between the drive shaft of the tilting frame and the drive means is engaged, and after releasing the lock by the lock means, the drive means is operated to tilt one of the tilting frames. By tilting only the rotation frame, it is possible to discharge crushed debris, metal, slag, etc. from the tundish.

The other tilting frame is separated from the driving means by the release of the clutch, but is locked by the locking means so that it cannot be tilted, so that the fireproof coating of the tundish on the one tilting frame is protected. While the work of crushing and discharging crushed debris, etc. is being carried out, another tundish to be subjected to the same work next can be transferred onto the other tilting frame and preparations for the work can be made. In some cases, while the tundish on one tilting frame is being tilted to discharge crushed debris, etc., the fireproof coating layer of the tundish supported on the other tilting frame may be removed. It is also possible to carry out crushing operations.

When the tilting frame that has been tilted for ejecting debris is returned to its original position, the locking means again locks the tilting frame so that it cannot be tilted, and then the clutch is released. Next, when the other tilting frame is to be tilted, the clutch between the drive shaft of the other tilting frame and the drive means is engaged, the lock by the locking means is released, and the other tilting frame is rotated. can be tilted and rotated by the driving means.

(Effects of the invention) As described above, according to the tundish tilting device of the present invention, even when two tilting devices are installed side by side, one demolition machine is shared.
We focused on the fact that the tilting devices of the tables do not perform the tilting action at the same time, so we designed a single drive means to selectively drive the two tilting frames.
Similar to the conventional equipment in which the tilting devices of the tables are installed side by side, the necessary work on the tundish can be done extremely efficiently by utilizing two tilting frames, but it does not require an extremely large and expensive drive means. By sharing one unit with both tilting frames, it is possible to significantly reduce the cost of the entire equipment and the installation space. Of course, the tilting frame, which is not connected to the drive means by releasing the clutch, can be locked by the locking means so that it cannot be tilted, so that necessary work can be safely performed on the supported tundish.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIGS. 1 and 2, 1A and 1B are tilting frames arranged in series, and each includes a pair of end frames 2a, 2b and 3a, 3b, and these end frames 2a, 2b. The pair of end frames 2a, 2b and 3a, 3b have a tundish support part 4a, into which both longitudinal ends of the tundish TD are fitted. 4b, 5a, 5b on the inside, and a rotating shaft 6 on the outside in a mutually concentric state.
a, 6b and 7a, 7b are fixedly protrudingly provided.
Both end rotation shafts 6a, 6 of each tilting frame 1A, 1B
b, 7a and 7b are supported horizontally via bearing boxes 10 on a central base 8 and outer bases 9a and 9b, respectively, and a motor 11 with a brake and a reducer 12 are mounted on the central base 8. one drive means 1 with
3 is installed.

The speed reducer 12 has its output shaft 14 connected to the rotating shafts 6a, 7a of the tilting frames 1A, 1B, which are concentrically opposed to each other on the central base 8, at an intermediate position between the rotating shafts 6a, 7a. They are installed so as to be located concentrically, and both ends of the output shaft 14 and the rotating shafts 6a and 7 of the tilting frames 1A and 1B are arranged concentrically.
Interlocking clutches 15 and 16 are interposed between the two. Moreover, on the bases 8, 9a, 9b,
A pair of end frames 2a, 2 of both tilting frames 1A, 1B
Locking means 17a, 17b and 18a, 18b are provided for locking locks 17a, 17b and 3a, 3b against tilting, respectively.

As shown in FIGS. 3 and 4, the meshing clutches 15 and 16 include a fixed pawl clutch piece 19 fixed to the end of the reducer output shaft 14, and a rotating portion of the tilting frames 1A and 1B. A movable claw clutch piece 2 is secured with a key 20 (or spline fitted) to the ends of the shafts 6a and 7a so as to be able to slide only in the axial direction.
1, and a switching means 22 for a movable pawl clutch piece 21. The switching means 22 has a pair of rollers 24 that are loosely fitted in the circumferential groove 23 of the movable pawl clutch piece 21 and are pivotally supported on the inside, and are swingable about a support shaft 25 in the axial direction of the rotating shafts 6a and 7a. arch-shaped shift lever 26 and this shift lever 2
6 and an electric cylinder 27 (another actuator such as a fluid pressure cylinder may also be used) connected to The pawl 21a of the pawl clutch piece 21 is the pawl 19 of the fixed pawl clutch piece 19.
a, the clutches 15, 16 are switched to the released state. Further, by swinging the shift lever 26 in a direction approaching the fixed pawl clutch piece 19 by the electric cylinder 27, the pawl 21a of the movable pawl clutch piece 21 engages with the pawl 19a of the fixed pawl clutch piece 19, and the clutch 15, 16 is switched to the transmission state.

The locking means 17a, 17b and 18a, 1
All of the locking means 8b have the same structure. Taking the locking means 17b shown in FIG. a lock pin 29, an electric cylinder 30 (another actuator such as a fluid pressure cylinder may be used) connected to the lock pin 29, and each tilting frame 1A,
When the frame 1B is in the erect position shown in the figure, the locking holes 31 are formed in the pair of end frames 2a, 2b and 3a, 3b so as to face the locking pin 29, and each tilting frame 1A, With the frame 1B in an upright position, the lock pin 29 is advanced and moved by the electric cylinder 30 and fitted into the lock holes 31 of the end frames 2a, 2b and 3a, 3b, so that each tilting frame 1A, 1B is shown in the figure. It can be locked in an upright position. To release the lock, use the electric cylinder 30 to push the lock pin 29 into the lock hole 3.
It would be better to leave from 1.

The lock hole 31 is connected to the tilting frame 1A, 1B.
When the lock pin 29 is tilted at a predetermined angle, the lock pin 29
It can also be provided at a position opposite to the tilting frame 1A, 1B to lock the tilting frames 1A, 1B tilted at a predetermined angle. Further, in the illustrated embodiment, two locking means 17a, 17b and 18a, 18b are provided for one tilting frame 1A, 1B, but the number and position thereof are not limited.

Although not shown in FIGS. 1 and 2, the end frames 2a, 2b, and 3 of the tilting frames 1A, 1B
On the inside of a and 3b, there is a tundish support part 4.
Similar to the conventional art, tundish clamp means is provided for locking the tundish TD whose both ends are fitted and supported by the tundishes a, 4b and 5a, 5b from falling during tilting. An example of this clamping means will be explained using the clamping means 32 provided on the end frame 2b shown in FIG. 6. Each clamping means 32 has a pair of front and rear clamp arms 33a,
3b, and electric cylinders 35a, 35b that open and close the clamp arms 33a, 33b via toggle links 34a, 34b.
By closing the clamp arms 33a, 33b, the tundish support parts 4a, 4b are closed.
and a tandice which is fitted and supported by 5a and 5b.
Clamp arms 33a and 33b on the upper surface of the TD end.
It can be fixed by pressing at the tip. Of course, when transferring the tandate TD, the electric cylinder 3
Clamp arms 33a, 33 by 5a, 35b
b can be released in a position where it does not get in the way.

In use, each tilting frame 1A, 1B is locked by the locking means 17a, 17b and 18a, 18b so that it cannot be tilted as described above.
Further, both dog clutches 15 and 16 are both in a released state. In this state, if the tundish TD is transferred to the left tilting frame 1A as shown in FIGS. 1 and 2, both ends of the tundish TD are tilted by the clamping means 32 as shown in FIG. While the tundish TD on the tilting frame 1A is clamped to the tilting frame 1A, the fireproof coating layer of the tundish TD on the tilting frame 1A is crushed by a demolition machine.

When the crushing work is completed, as shown in FIG. 3, the movable claw clutch piece 21 of the meshing clutch 15 is engaged with the fixed claw clutch piece 19 to switch to the transmission state, and then the locking means 17a and 17b are released.
The motor 11 with a brake of the driving means 13 is driven to rotate in the normal direction at the same time as the brake is released, and its rotational force is decelerated by the reducer 12 and transmitted to the output shaft 14, and further transmitted to the tilting frame via the dog clutch 15 and the rotating shaft 6a. Transmit to 1A. As a result, the tilting frame 1A tilts around the rotation axes 6a, 6b.

When the tilting frame 1A is tilted, the supported tundish TD is tilted as a unit, so when the tilting frame 1A is tilted at a predetermined angle, for example, 180 degrees, the motor 11 is stopped and the brake is activated at the same time. However, when the tilting frame 1A is configured to be locked by the locking means 17a, 17b, the tilting frame 1A is further locked by the locking means 17a, 17b, and the tundish TD
Dispose of crushed debris, metal, slag, etc. Various types of waste sludge that are discharged are collected by a sludge receiving device (not shown) disposed below the tilting frame 1A.

When the ejection of crushed debris, etc. is completed, the tilting frame 1
When A is in the tilted position and locked by the locking means 17a, 17b, after releasing the lock, the motor 11 is driven in reverse at the same time as the brake is released to return the tilting frame 1A from the tilted position to the original upright position. Rotate back to the position and lock means 17 again.
After locking the tilting frame 1A with a and 17b,
The engagement clutch 15 is released to complete a series of tundish tilting operations.

As mentioned above, when the left tilting frame 1A is used to perform the required work on the tundish TD, another tundish TD is transferred to the right tilting frame 1B to prepare for the next work. It can be done. Once the tundish TD on the tilting frame 1A is carried out, the same work can be performed on the tundish TD supported by the right tilting frame 1B. In this case, in order to tilt and return the tilting frame 1B, the dog clutch 16 and the locking means 18a, 18b are used.
and are switched in the manner described above.

In some cases, both tilting frames 1
For the tundish TD supported by A and 1B, the crushing work of the fireproof coating layer and the work of discharging crushed debris etc. can be performed at different times. In any case, only one of the dog clutches 15, 16 is switched to the transmission state, and both tilting frames 1A, 1B are not tilted at the same time.

It is preferable to use an electrical or mechanical interlock mechanism in order to prevent both dog clutches 15 and 16 from being switched to the transmission state due to erroneous operation. For example, the shift levers 26 of both dog clutches 15 and 16 may be configured to be interlocked and connected to each other so that they can be switched by one electric cylinder 27, and both dog clutches 1
When the shift lever 26 is tilted to one side from the neutral position where both clutches 5 and 16 are released, only one of the engagement clutches 15 switches to the transmission state, and when the shift lever 26 is tilted to the other side, the other engagement clutch 15 is switched to the transmission state. It is also possible to provide an arrangement in which only the clutch 16 is switched into the transmission state.

In the above embodiment, two tilting frames 1A, 1
B are arranged in series, but this is because the demolition machine is moved on a straight path, and the tundish TD supported by either tilting frame 1A or 1B is
This is to make it applicable to
Depending on the case, both tilting frames 1A and 1B may be arranged in parallel. In this case, the rotating shaft 6
A, 7a and the output shaft 14 of the reducer 12 may be provided with a right-angle transmission mechanism such as a worm gear or a bevel gear.

[Brief explanation of the drawing]

Fig. 1 is an overall plan view, Fig. 2 is a side view of the same, Fig. 3 is a partially longitudinal side view illustrating the meshing clutch, Fig. 4 is a longitudinal sectional front view thereof, and Fig. 5 is an illustration of the locking means. FIG. 6 is a partially longitudinal side view and a longitudinal front view illustrating the tundish clamping means. 1A, 1B...Tilt frame, 2a, 2b, 3
a, 3b...end frame, 2c, 3c...side frame, 4a,
4b, 5a, 5b... tundish support part, 6
a, 6b, 7a, 7b...tilting frame rotation axis,
11...Motor with brake, 12...Reducer, 13...Driving means, 14...Reducer output shaft,
15, 16... meshing clutch, 17a, 17
b, 18a, 18b...Lock means, 19...Fixed claw clutch piece, 21...Movable claw clutch piece, 2
6... Arched shift lever, 27, 30, 35
a, 35b... electric cylinder, 29... lock pin, 31... lock hole, 32... tundish clamp means, 33a, 33b... clamp arm, TD... tundish.

Claims (1)

[Scope of utility model registration request] Two tilting frames for supporting and tilting the tundish are installed in parallel, and one driving means equipped with a motor and a speed reducer is connected to each drive shaft of the two tilting frames through a clutch. . A tundish tilting device comprising locking means for individually locking both tilting frames so that they cannot be tilted.