KR20040036030A - Plug auto connecting device for bubbling in ladle bottom - Google Patents

Abstract

PURPOSE: An apparatus for automatically connecting ladle bubbling plug is provided which improves productivity by automatically mounting an inert gas blowing coupler on the plug to carry out bubbling operation, thereby reducing working load, securing safety of working and shortening working hours. CONSTITUTION: The apparatus comprises first and second supporting plates(40,60) supported by a plurality of first, second and third supports(30a,30b,30c) erected adjacently to a setting position of ladle(20) comprising a plug that is a gas injection port for bubbling; a rotational operation cylinder(42) fixed onto an upper surface of the first supporting plate(40) and consisted of operating cylinder rod(44); a fixing member(46) vertically fixed onto one end surface of the first supporting plate; a rotation shaft supported by the fixing member, rotationally erected on the second supporting plate(60) and rotationally connected to the operating cylinder rod; a rotational supporting frame(70) integrally fixed onto the outer circumferential surface of the rotation shaft; and a gas supplying coupler fixed onto an upper surface of the rotational supporting frame and arranged in such a manner that the gas supplying coupler is locked to or unlocked from the plug by a back and forth moving means.

Description

PLUG AUTO CONNECTING DEVICE FOR BUBBLING IN LADLE BOTTOM}

The present invention provides improved ladle bubbling to enable fast and accurate connection while protecting the lower worker from falling objects attached to the upper ladle when connecting the bubbling line to the plug of the ladle bottom during low bubbling process. Plug automatic connection.

In general, in the field of steelmaking and refining technology, a plug capable of gas injection is installed on one side of the bottom or outer circumferential surface of a ladle and the inert gas such as argon and nitrogen is blown into the molten metal to stir the molten metal or the ladle It reduces the temperature and component deviations of the upper and lower molten steel, and raises high-quality clean steel by floating non-metallic inclusions present as impurities in the molten metal.

The operation form of this bubbling process is roughly divided into upper blowing bubbling which blows the inert gas by using the upper blowing rod, and low blowing bubbling which blows and stirs the inert gas from the lower part of the ladle using a low-porous plug. In the case of bubbling, low odor bubbling is widely used for quality improvement due to disadvantages such as the mixing of converter slag introduced into and out of the ladle and the reoxidation of molten steel.

By the way, when connecting the line for supplying the inert gas to the plug of the ladle during the low-bubbling bubbling process in the past, the work time is not constant, and there is a lot of work delay. Because of the manual work has been a disadvantage that the dead deposits, such as now adhered to the top of the ladle or the melt is falling, causing fatal personal injury.

The present invention has been made in view of the above-mentioned problems in the prior art as described above, and mechanical connection can be performed by automatic operation when connecting the gas supply line to the plug of the ladle for bubbling operation. It is an object of the present invention to provide an automatic connection device for plug buckle ladle bubbling to ensure the rapid safety of the connection work, maintaining a constant working time as well as the safety of the operator.

1 is a schematic cross-sectional view showing an installation state of the device of the present invention;

Figure 2 is a main operation state diagram of the device of the present invention,

3 is a partial cross-sectional view showing a rotating shaft installation state of the device of the present invention,

Figure 4 (a), (b) is a side view showing the locking means of the device of the present invention,

5 is a plan view showing a coupler means of the device of the present invention;

Figure 6 (c), (d) is a cross-sectional view showing an example of the coupler and the fastening state of the device of the present invention.

Explanation of symbols on the main parts of the drawings

20 .... Laddle 22 .... Plug

30a, b, c .... support 40,60 .... support plate

42..Swivel Actuating Cylinder 46 ....

64 .... Rotating Shaft 70 .... Swivel Support Frame

80..locking cylinder 84 .... locking pin

86 .... Support Post 88 ... Locking Groove

90 .... Locking block 92 .... Working cylinder for joining

98 .... coupler

The above object of the present invention includes: first and second support plates supported by a plurality of first, second and third supports placed adjacent to a setting position of a ladle having a plug as a bubbling gas inlet; A swing operation cylinder fixed to an upper surface of the first support plate and having an operation cylinder rod; A holder fixed perpendicularly to one end surface of the first support plate; A rotary shaft rotatably mounted on the second support plate while being supported by the fixing stand and rotatably connected to the operation cylinder rod; A pivot support frame integrally fixed to an outer circumferential surface of the rotary shaft; Achievement by providing an automatic connection device for the buckle ladle bubbling characterized in that it comprises a gas supply coupler fixed to the upper surface of the support frame for pivoting and arranged to be locked and unlocked by the forward and backward means. do.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 1 is a schematic side cross-sectional view showing an installation state of the device of the present invention, Figure 2 is a main operation state diagram of the device of the present invention.

As shown in FIGS. 1 and 2, the apparatus of the present invention is adapted to accommodate the bubbling setting position of the ladle 20 secured on a trolley 12 moving along a rail 10. Supported by (30a, 30b, 30c).

The first support plate 40 is fixed to the upper end of the first support 30a, and the pivoting operation cylinder 42 is fixed to the pivoting operation cylinder 42 by a bracket on the first support plate 40. The working cylinder rod 44 is fixed.

In addition, a cross section of the first support plate 40 on the side of the working cylinder rod 44 is fixed to the holder 46 not interfering with the working cylinder rod 44 orthogonally.

The second support plate 60 is fixed to the upper ends of the second and third support plates 30b and 30c so as to be positioned lower than the first support plate 40, and the thrust bearing housing as shown in FIG. 3 on the second support plate 60. 62 is fixed, and the lower end of the rotary shaft 64 is rotatably fixed to the thrust bearing housing 62 by the thrust bearing.

On the other hand, the upper end of the rotary shaft 64 is rotatably fixed by a ball bearing built in the ball bearing housing 66, the ball bearing housing 66 and the thrust bearing housing 62 are connected to the bracket (48a, 48b), respectively. It is fixed to the holder 46 through.

In addition, the working cylinder rod 44 is movably linked to a part of the rotating shaft 64 or a part of the pivoting support frame 70 that fixes the rotating shaft 64.

In addition, the pivot support frame 70 is integrally fixed to the outer circumferential surface of the rotary shaft 64 by a plurality of fixing brackets (72).

At this time, the swing operation cylinder 42 is preferably adjusted so that the swing support frame 70 has a stroke rotatable 90 ° about the rotation shaft 64.

2 and 4, a locking block 90 having a locking groove 88 is fixed to one side of the fixing base 46 in a non-flowable manner, and a support post (a part of the upper surface of the supporting frame 70 for pivoting). A locking pin 84 is inserted into and detachable from the locking groove 88 while being supported forward and backward by 86. A locking cylinder rod 82 is pin-coupled to one end of the locking pin 84. The cylinder rod 82 is coupled to the locking cylinder 80 fixed on the pivot support frame 70.

Therefore, by inserting and locking the locking pin 84 into the locking groove 88, it is possible to fix the pivot support frame 70 rotated together with the rotary shaft 64 so as not to flow.

In addition, as shown in Figures 2, 5, 6, the coupling operation cylinder 92 is fixed to the upper surface of the pivot support frame 70, the cylinder rod 94 is connected to the coupling operation cylinder 92 A guide block 96 is fixed to the cylinder rod 94, and a coupler 98 coupleable to the plug 22 installed on the ladle 20 is fixed to the guide block 96.

In particular, the guide block 96 is pivoted as a member to guide the coupler 98, which is moved back and forth by the coupling operation cylinder 92, to be smoothly and accurately guided to the plug 22 side without being flown. It has the same structure as a conventional guide member slidably arranged along the upper surface of the paper frame 70.

The operating relationship of the present invention made of such a configuration is as follows.

When the ladle 20 transported along the trolley 12 is set while stopping at an appropriate position for bubbling operation, the operator advances the swinging operation cylinder 42 so that the pivoting support frame 70 rotates the rotation shaft 64. Rotate the center of rotation so that it is rotated 90 ° from the initial position, that is, the home position.

When the pivoting support frame 70 is rotated, the locking groove 88 and the locking pin 84 of the locking block 90 are in a lockable state, and the coupler 98 is also easily mounted on the plug 22. Will be placed in a state that can be.

In this state, when the locking cylinder 80 is moved forward to prevent the flow of the support frame 70 for pivoting, the locking cylinder rod 82 moves forward to push the locking pin 84 connected thereto. It is to be inserted into the locking groove 88 formed in the block (90).

That is, the locking pin 84 is inserted into the locking groove 88 to be locked, so that the pivoting support frame 70 is maintained in a state where it cannot be easily flowed.

After the locking operation is completed, the coupling operation cylinder 92 is advanced to maintain the bubbling operation by allowing the coupler 98 connected thereto to be correctly inserted into the plug 22.

Subsequently, by injecting an inert gas through the coupler 98, a low odor bubbling operation is possible from the bottom (bottom) portion of the ladle 20.

When the bubbling operation is completed, the operation equipment is operated in the reverse order to the above-described operation so that each operating equipment is returned to the initial position, and the subsequent work is repeatedly performed.

Here, it is well known that the above-described process can be configured to be controlled automatically in time series using a microprocessor such as a known PLC.

As described in detail above, the present invention can automatically mount the inert gas blowing coupler to the plug for bubbling to reduce the work load, ensure the safety of the work, shorten the working time to improve productivity It offers great benefits to help.

Claims (2)

First and second support plates 40 supported by a plurality of first, second and third supports 30a, 30b and 30c, which are placed adjacent to the setting position of the ladle 20 having the plug 22 which is a gas inlet for bubbling. , 60); A swing operation cylinder 42 fixed to an upper surface of the first support plate 40 and having an operation cylinder rod 44; A fixing stand 46 fixed perpendicularly to one end surface of the first support plate 40; A rotating shaft 64 supported by the holder 46 and rotatably mounted on the second support plate 40 and rotatably connected to the operation cylinder rod 44; A pivot support frame 70 integrally fixed to an outer circumferential surface of the rotary shaft 64; For ladle bubbling characterized in that it comprises a gas supply coupler 98 is fixed to the upper surface of the support frame 70 for pivoting and excreted and unlocked with the plug 22 by forward and backward means. Plug auto connection. The method of claim 1, The rotating shaft 64 is a locking block 90 having a locking groove 88 fixed to the fixing base 46 and the pivot support premature so that the locking shaft can be coupled to and detachably flown from the locking groove 88. By a locking pin (84) fixed and supported by a support post (86) on (70), and by a locking cylinder (80) connected to the locking pin (84) and fixed on a pivoting support frame (70). Automatic connection device for plug ladle bubbling, characterized in that it is installed to maintain a fixed state after rotation.