JP4283457B2 - Power supply device for electromagnetic stirrer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power supply device for energizing an electromagnetic stirring device attached to a mold in equipment for continuously casting molten steel injected into a mold while electromagnetic stirring.
[0002]
[Prior art]
In continuous casting of steel, in order to obtain slabs with excellent surface quality, the molten steel injected into the mold from the tundish through the nozzle is electromagnetically stirred to actively remove non-metallic inclusions and gases contained in the molten steel. It is lifted and removed. The electromagnetic stirring is performed by energizing an electromagnetic coil attached to the mold.
[0003]
By the way, in the continuous casting of steel, the solidified shell formed on the mold surface is continuously drawn out from the mold to form a cast piece, so that the mold is vibrated up and down with an appropriate amplitude and cycle. Also, the mold needs to be replaced regularly or when trouble occurs.
For this reason, power supply to the electromagnetic stirrer is performed by connecting a connector to a terminal provided on the mold via a cable from a power supply device outside the machine.
[0004]
The power supply of the magnetic stirring device is a large current, and since connection reliability has been manually connected one by one in the past, and the cable connector is very heavy, manual connection work has become a heavy labor. It was. For this reason, the cable connector connection operation time is the most time-consuming operation in the mold replacement time.
[0005]
In addition, since the mold cooling water supply / drainage pipe is removed and attached when the mold is replaced, the power cable connection is in a high humidity environment. For this reason, manual cable connection is accompanied by dangers such as electric leakage.
Furthermore, in addition to scheduled replacement, replacement due to sudden troubles such as breakout also occurs, and there has been a demand for minimizing the mold replacement time.
[0006]
Japanese Patent Publication No. 7-87107 discloses a plasma torch used for heating molten steel in a tundish and a power connection technique for induction heating as conventional techniques for automatic power connection in a continuous casting facility.
Japanese Patent Application Laid-Open No. 9-1298 discloses a connection device for a power supply circuit for a tundish plasma heating device, and Japanese Patent Application Laid-Open No. 6-154962 discloses a rotational connection structure for a cable in a ladle turning device. Yes.
However, there is no technique disclosed for automatic connection of the power cable in the mold.
[0007]
[Problems to be solved by the invention]
Therefore, the problem to be solved by the present invention is that the power supply for energizing the electromagnetic stirrer attached to the mold of the continuous casting equipment is automated, thereby greatly shortening the mold exchange time and in a high humidity environment. It avoids dangers such as electric leakage in the air and frees you from heavy labor to handle heavy cable connectors.
[0008]
[Means for Solving the Problems]
The present invention for solving the above-mentioned problems is that in a continuous casting facility in which an electromagnetic coil is attached to a mold, a mold-side connector in which a plurality of cables are assembled is arranged on the mold side that vibrates up and down, and the fixed position is removed from the mold. An outboard connector and a connector connecting device for moving the outboard connector to connect to the mold side connector are provided , a guide device is provided in the outboard connector, and a guide rod of the guide device is fitted into the mold side connector. A guide hole is provided, and a fixing mechanism for the inserted guide rod is provided. The guide device has a guide rod storage case for storing the guide rod and the guide rod, and the upper rod and the lower rod of the guide rod are guide rod storage cases, respectively. The upper rod in the storage case is loaded with a spring. The tip of the lower rod is fitted to the machine-side connector frame, and when the mold-side connector and the machine-side connector are connected, the guide rod is fixed by the fixing mechanism while the spring is pressed, and the connection is made. A power supply device for an electromagnetic stirrer characterized by ensuring .
[0010]
Further, the outboard connector frame is guided by contact with a guide roller, the guide roller is attached to the tip of a guide roller rod, and the rod is supported by attaching a spring in a support case so that both connectors are connected and held. It is preferable to provide a mechanism .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a plan view of a mold to which the apparatus of the present invention is attached. The mold is composed of a long-side cooling box 3 and a long-side copper plate 9, a short-side cooling box 4 and a short-side copper plate 10, a clamping device 6, and a mold fixing frame 1, and molten steel 5 is contained in the mold. Injected. The short side cooling box 4 and the short side copper plate 10 can be moved by the variable width device 8.
[0012]
An electromagnetic coil 2 is provided in the long-side cooling box 3, and the molten steel 5 is electromagnetically stirred by energizing the electromagnetic coil 2, and non-metallic inclusions and gases in the molten steel 5 are levitated to improve the surface quality of the slab. Improve. A mold-side connector 11 for supplying power is disposed on the mold fixing frame 1.
[0013]
FIG. 2 is a front view of FIG. The terminal 11 a of the mold-side connector 11 disposed on the mold fixing frame 1 and the terminal 11 b of the electromagnetic coil 2 are connected via the cable 7. The outboard connector 12 is connected to the mold side connector 11 by the connector connecting device 20.
[0014]
FIG. 3 is a side view of FIG. The mold fixing frame 1 is supported by a vibration table 22 via an intermediate table 21, and the mold fixing frame 1 is vibrated by vibrating the vibration table 22 by a vibration device 23 so that the mold vibrates up and down. A vibration cylinder 24 is attached to the vibration device 23 and is installed on a vibration device fixing table 37 fixed to the base.
[0015]
The mold side connector 11 is disposed on a mold side connector mounting bracket 25 fixed to the mold fixing frame 1.
The outboard connector 12 and the connector connecting device 20 are arranged on the vibration device fixing table 37 in this example. That is, as shown in FIG. 3, the external connector 12 can be moved up and down as shown in FIG. 2 by the connector connecting device 20 fixed to the vibration device fixing table 37.
[0016]
Further, as shown in FIG. 2, guide hole brackets 28 are provided on both sides of the mold side connector 11, guide holes 13 are formed in the bracket 28, and the guide holes 13 are provided on both sides of the outboard connector 12. The guide rod 31 of the outboard connector frame 15 is fitted.
[0017]
The connector connecting device 20 includes a connecting cylinder 17 and a support frame 19 attached to a connector connecting device mounting bracket 26 as in the example of FIG. The machine-side connector 12, the machine-side connector mounting plate 18 for fixing the machine-side connector 12, the guide device 14 connected to the mounting plate 18, and the machine in which the tip of the lower rod of the guide device 14 is fitted. Part A composed of the outer connector frame 15 is moved along the support frame 19 by the connecting cylinder 17.
In addition to the vibration device fixing table 37, the connector connecting device 20 can be installed anywhere outside the machine that does not vibrate up and down from the mold.
[0018]
Further, an outboard connector support device 16 is attached to the support frame 19, and the support device 16 includes a guide roller rod 33 and a spring 34 housed in a support case 35 and the rod 33 as shown in FIG. 5. A guide roller 32 is supported at the tip, and a guide roller rod 33 is expanded and contracted by a spring 34 so that the guide roller 32 is pressed against the outboard connector frame 15. The guide roller 32 is rotatably locked to the guide roller rod 33 and can be adjusted in position by an adjustment nut 36.
[0019]
The guide device 14 includes a guide rod 31, a guide rod storage case 29, and an outboard connector frame 15 as shown in FIG. The guide rod 31 is slidably stored in the guide rod storage case 29, the upper rod 31 a of the guide rod 31 protrudes above the guide rod storage case 29, and the lower rod 31 b is below the guide rod storage case 29. It protrudes. A spring 30 is attached to the upper rod 31 a in the guide rod storage case 29, and the tip of the lower rod 31 b is fitted to the outboard connector frame 15. Two sets of this guide device 14 are installed across the outboard connector 12.
[0020]
FIG. 7 is a view showing a contact surface of the connector, and a purge nozzle 39 for purging the connector surface is disposed at the center of the connector where the contact 38 is disposed. The purge nozzle 39 removes foreign matter adhering to the surfaces of the machine-side connector 12 and the mold-side connector 11 to prevent the foreign matter from being caught when the connector is connected.
[0021]
First, the connection cylinder 17 is raised to connect the outboard connector 12 to the mold side connector 11. At this time, the upper rod 31a of the guide device 14 passes through the guide hole 13 provided in the guide hole bracket 28 of the mold side connector 11 to guide the rise of the machine-side connector 12. This is because the guide roller 32 of the support device 16 is supported by the spring 33 so as to expand and contract, so that even if a positional deviation occurs between the two connectors, the guide roller 32 rises while being finely adjusted by the guide rod 31 and the support device 16.
[0022]
After the upper rod 31a of the guide rod 31 passes through the guide hole 13 on the mold side connector 11 side, the connection cylinder 17 is further raised to securely connect the mold side connector 11 and the outboard connector 12. At this time, as shown in FIGS. 4 and 6, the guide rod case 29 and the outboard connector are supported via the outboard connector frame 15, the guide rod 31 and the spring 30. By further raising the connecting cylinder 17, the cotter 27 is attached to the tip of the upper rod 31a in a state where the spring 30 built in the guide rod storage case 29 is compressed and the mold side connector 11 and the outboard connector 12 are further pressed. The guide rod 31 is fixed to ensure the connection.
[0023]
The connection part of both the connectors 11 and 12 connected by the device of the present invention does not have a possibility of causing a contact failure or the like due to the vibration when the mold is vibrated up and down. That is, the connecting portion integrally vibrates with the mold, but the upper rod 31a of the guide rod 31 is fitted into the guide hole 13 and fixed as shown in FIG. 4, and then the connecting cylinder 17 is lowered. This is because the outboard connector 12 is separated from the fixed position of the vibration device mounting table 37 and the like. Further, the vibration is absorbed by the spring 30 built in the guide device, and the connection pressure between the mold-side connector and the machine-side connector is maintained.
[0024]
【The invention's effect】
As described above, since the conventional manual power connection can be automatically and collectively connected, the connection time is shortened, and there is no risk of leakage or the like.
Further, by adopting the support device, the connector can be reliably connected, and there is no fear of contact failure of the connector connection portion due to mold vertical vibration. Further, the arrangement of the purge nozzle can remove foreign matters on the surface of the connector, and the connection pressure holding device can keep the contact pressure constant even in a vibration state, and can stably supply power.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of a device of the present invention.
FIG. 2 is a front view showing an example of the device of the present invention.
FIG. 3 is a side view showing an example of the device of the present invention.
FIG. 4 is an explanatory view showing an example of a guide device in the device of the present invention.
FIG. 5 is an explanatory view showing an example of a support device in the device of the present invention.
FIG. 6 is an explanatory view showing an example of a connecting portion in the device of the present invention.
FIG. 7 is a plan view showing an example of a connector in the device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mold fixing frame 2 ... Electromagnetic coil 3 ... Long side cooling box 4 ... Short side cooling box 5 ... Molten steel 6 ... Clamping device 7 ... Cable 8 ... Width variable device 9 ... Long side copper plate 10 ... Short side copper plate 11 ... Mold side connector 12 ... External connector 13 ... Guide hole 14 ... Guide device 15 ... External connector frame 16 ... External connector support device 17 ... Connecting cylinder 18 ... External connector mounting plate 19 ... Support frame 20 ... Connector connection device 21 ... Intermediate table 22 ... Vibration table 23 ... Vibration device 24 ... Vibration cylinder 25 ... Mold side connector mounting bracket 26 ... Connector connection device mounting bracket 27 ... Cutter 28 ... Guide hole bracket 29 ... Guide rod storage case 30 ... Spring 31 ... Guide rod 31a ... Upper rod 31b ... Lower rod 32 ... Guy Rollers 33 ... guide roller rod 34 ... spring 35 ... support case 36 ... adjustment nut 37 ... vibration device fixed table 38 ... power supply contacts 38a ... control contact 39 ... purge nozzles 40 ... connected pressure holding device

Claims (2)

In a continuous casting facility with an electromagnetic coil attached to the mold, a mold-side connector in which a plurality of cables are assembled is arranged on the mold that vibrates up and down, and the machine-side connector and machine-side connector are moved to a fixed position where the mold is removed. A connector connecting device for connecting to the mold side connector is provided , a guide device is provided on the machine-side connector, a guide hole into which the guide rod of the guide device is fitted is provided on the mold side connector, and the guide rod fitted A fixing mechanism is provided, and the guide device has a guide rod and a guide rod storage case for storing the guide rod, and an upper rod and a lower rod of the guide rod are respectively stored by protruding from the upper and lower sides of the guide rod storage case. A spring is attached to the upper rod in the inside, and the tip of the lower rod is Is inlaid in Kuta frame, upon connection of the machine outer connector and the mold-side connector, while pressing the spring, electromagnetic, characterized in that the guide rod is fixed at its fixing mechanism to ensure the connection Power supply device for the stirring device. The outboard connector frame is guided by contact with a guide roller, and the guide roller is attached to the tip of a guide roller rod. The rod is supported by attaching a spring in a support case. The power supply device of the electromagnetic stirrer according to claim 1 provided.

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