KR100940682B1 - An apparatus for locking door to annealing furnace - Google Patents

Abstract

The present invention relates to a device for stably locking the door of the horizontal high temperature annealing furnace in the production process of electrical steel sheet.

The present invention is provided with a plurality of grip rolls are arranged at equal intervals along the outside of the door plate covering the charging opening of the annealing furnace to press at least eight places of the door plate, triangular projections to the movable rod equipped with the inclined surface and the rotary roll With a hydraulic cylinder to push, the triangular protrusions are connected through link members to provide a door locking device of the annealing furnace in which a plurality of grip rolls press the door plate to the door frame to form a seal.

According to the present invention, the door-side sealing force of the annealing furnace is doubled to safely maintain the atmosphere gas in the high temperature annealing furnace, and by performing a perfect sealing to prevent environmental pollution of the workplace, as well as to secure the quality of the cold rolled products and to perform annealing. The improved effect is obtained to ensure the safety of.

Electric steel plate, horizontal high temperature annealing furnace, grip roll, triangular protrusion, hydraulic cylinder, door locking device of annealing furnace

Description

Door lock of annealing furnace {AN APPARATUS FOR LOCKING DOOR TO ANNEALING FURNACE}

1 is an external structural view showing a door locking device of the annealing furnace according to the prior art;

2 is an operation explanatory diagram showing a state in which the push bar of the door locking device of the annealing furnace according to the prior art fixes the door plate to the door frame;

3 is an external structural view showing a door locking device of the annealing furnace according to the present invention;

4 is a plan view showing a state in which the grip roll provided in the door locking device of the annealing furnace according to the present invention is operated by a hydraulic cylinder to fix the door plate;

5 is an operating state diagram showing a state in which the grip roll provided in the door locking device of the annealing furnace according to the present invention is operated by a hydraulic cylinder to fix the door plate.

       <Description of the symbols for the main parts of the drawings>

5 .... grip roll 10 .... pivot

11 .... Push rod 12 .... Hinge

14 .... slope 18 .... spring

20 .... ∩-shaped fixture 30 .... Straight moving part

32 .... slope 35 .... moving rod

37 .... 가이드 shaped guide 40 .... rolling roll                 

50 .... drive 52 .... triangle

55 .... link member 57 .... hydraulic cylinder

105 .... 107 annealing furnace

110 .... Door plate 120 .... Rotary cylinder

122 .... door frame 130 .... lifting motor

132 .... sprocket 135 .... chain

140 ... push rod 150 ... sealing member

C .... coil

The present invention relates to a device for stably locking a door of a horizontal high temperature annealing furnace in the production process of electrical steel sheet, and more particularly, to double the door side sealing force of the annealing furnace to safely maintain the atmosphere gas in the high temperature annealing furnace, The present invention relates to a door locking device of an annealing furnace that is improved to achieve a quality capability of a cold rolled product and to secure an annealing operation as well as preventing environmental pollution of a workplace by achieving a perfect sealing.

In general, to anneal the electrical steel sheet at high temperature, annealing is performed for a long time in a hydrogen atmosphere in a horizontal high temperature annealing furnace.

Thus, in order to perform high temperature treatment for a long time, the door installed at the inlet side of the annealing furnace should be opened and closed from time to time to insert the coil into the inside thereof. After that, the sealing and locking work should be repeated.

1 shows a door locking device 100 of a conventional horizontal high temperature annealing furnace for performing such an operation. This is because a plurality of vertical rotary cylinders 120 hydraulically actuating the door plate 110 of the rectangular structure capable of raising and lowering up and down at the entrance side of the charging opening 107 of the annealing furnace 105 is pressed against the door frame 122. To achieve sealing and closure.

That is, the elevating motor 130 is provided on the upper side of the door of the annealing path 105, and a plurality of sprockets 132 are provided on the rotating shaft 130a of the elevating motor 130 to provide an upper end of the chain 135. Connect.

The door plate 110 is connected to the lower end of the chain 135 to cover the charging hole 107 of the annealing path 105 by moving up and down by the operation of the lifting motor 130. In addition, the conventional door lock device 100 as described above is moved up and down along the door passage 137 formed up and down in the annealing path 105 in order for the door plate 110 to move up and down accurately up and down of the annealing path 105 It enters the charging hole (107).

As described above, when the door plate 110 reaches the charging hole 107 side of the annealing path 105, as shown in FIG. 2, the outer surface of the door plate 110 is pressed toward the door frame 122 from all directions. The rotary cylinders 120 are operated, and the push rods 140 provided on the rotary shaft 120a of the rotary cylinder 120 pressurize the outer edges of the door plate 110 to the inner surface of the door plate 110. By close contact with the sealing members 150 fixed to the door frame 122, the door plate 110 closes the charging hole 107 to achieve the sealing of the annealing path 105.

On the other hand, in order to withdraw the coil (C) in the annealing furnace 105, by pressing the door plate 110 from the door frame 122 in the opposite operation to the above, and then lifted again by the lifting motor 130 The coil C is drawn out.

However, in the conventional door locking device 100, only four places press the door plate 110 to the door frame 122 when thermal deformation and other shape deformation of the door inlet-side frame 122 occur, thus perfectly. There is a problem that the complete sealing is not made between the door plate 110 and the door frame 122 by not being in close contact.

And, if the complete sealing is not achieved in this way, the environmental pollution of the workplace due to the leakage of the internal atmosphere gas of the annealing furnace 105 was severe, annealing of the coil (C) product due to the low pressure instability in the high temperature annealing furnace 105 Defects that have a serious impact on the quality of heat treatment have occurred.

The present invention is to solve the above conventional problems, the object is to double the door-side sealing force, to maintain a safe atmosphere gas in the high temperature annealing furnace, to prevent harmful gas leakage to the workplace to prevent safety accidents Of course, to provide an improved door lock device of the annealing furnace to ensure the quality of the annealing heat treatment products.

In order to achieve the above object, the present invention, in the production process of the electrical steel sheet in the device for sealing the charging opening of the horizontal high temperature annealing furnace using the door plate,

A plurality of grip rolls disposed at equal intervals along the outer side of the door plate covering the charging opening of the annealing furnace and pressing at least eight places of the door plate;

A plurality of push rods, each of which is formed on one side of the grip roll, is pivotable by hinge connection between the grip rolls, and an inclined surface is formed on the other side of each push rod;

A plurality of moving rods having inclined surfaces corresponding to the inclined surfaces of the rotating unit, respectively, on one side, the middle portion of the moving rod is provided with guides for linearly moving the moving rods, and the other side of the moving rods is equipped with a rotary roll ; And

A hydraulic cylinder having a triangular protrusion for straightening the moving rod by pushing the rotary rolls of the linear moving parts, and a link member connecting the triangular protrusions, respectively, and moving the link members back and forth to allow the triangular protrusions to push the rotary rolls. By providing a door locking device of the annealing furnace comprising a; drive unit having a.

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

As shown in FIGS. 3 and 4, the door locking device 1 of the annealing furnace according to the present invention includes the entrance plate 107 of the horizontal high temperature annealing furnace 105 in the production process of the electrical steel sheet. In order to seal sealingly using a), at least eight or more grip rolls 5 on the outer surface where the charging opening 107 of the annealing furnace 105 is located are connected to the door frame 110. 122) to the side to seal.

To this end, the present invention is provided with a circular door plate 110 covering the charging hole 107 of the annealing furnace 105, and is disposed at equal intervals along the outside of the door plate 110 to minimize the door plate 110 A plurality of grip rolls 5 for pressing eight places are provided.

As shown in FIG. 3, they are disposed at at least eight locations circumferentially about the charging hole 107, respectively, and the mounting direction thereof is disposed toward the center of the charging hole 107.

In addition, the grip rolls 5 respectively press the door plate 110 to the door frame 122 by the rotation part 10, and they are provided at one side of the plurality of push rods 11. It is prepared. In addition, the push rods 11 of the pivoting part 10 are rotatable, as the hinge 12 is connected to the outer shell bar 105a of the annealing path 105, as shown in cross section in FIG. The other side of each push bar 11 has a structure in which the inclined surface 14 is formed.

And, between the intermediate hinge 12 and the inclined surface 14, the spring 18 which always presses the push rod 11 on the inclined surface 14 side, that is, the inclined surface 14 side around the intermediate hinge 12 ) Is mounted, the upper end of which is fixed to the upper surface of the inner surface of the X-shaped fixture 20 mounted on the steel bar 105a of the annealing furnace 105, and the lower end of the spring 18 is the upper surface of the push bar 11. By being connected to the push rod 11, the inclined surface 14 side is always pressed to the steel bar 105a side of the annealing path 105, so that the grip roll 5 around the intermediate hinge 12 is the door frame 122 It is to be heard from.

In addition, the present invention includes a linear moving part 30 for applying an action to the rotating part 10, the linear moving part 30 is inclined surface corresponding to the inclined surface 14 of the pressing rod 11, respectively It is provided with a plurality of movable rods 35 having one side on one side, the middle of the movable rod 35 is provided with guides 37 having a cross-sectional shape for linearly moving the movable rods 35, the movable rods ( The other side of the 35 has a structure in which the rotary roll 40 is mounted.

Each of the guides 37 having a cross sectional shape is fixed to the outer shell 105a of the annealing furnace 105, and the movable rods 35 are fitted to slide the inner side thereof, and the movable rods 35 are movable. As shown in FIG. 5, the inclined surface 32 provided on one side of the inclined surface 32 is formed in the direction in which the inclined surface 14 of the push rod 11 is lifted to the upper side when the inclined surface 32 is moved forward.

That is, the inclined surface 32 lifts the push bar 11 inclined surface 14 of the rotating part 10 to the upper side as the moving rod 35 moves forward, and moves backward to the spring 18 of the rotating part 10. The inclined surface 14 of the push bar 11 descends by this.

The driving unit 50 for straightening the moving rod 35 by pushing the rotary roll 40 of each linear moving unit 30 as described above has a plurality of triangular protrusions having a comb surface 52a in contact with the rotary roll 40 ( 52, the link members 55 connect the respective triangular protrusions 52, and the hydraulic cylinders 57 to move the link members 55 forward and backward.

3, the rod of the hydraulic cylinder 57 is connected to a triangular protrusion 52 on one side, and the triangular protrusion 52 on the one side is opposite to the inclined surface 52a. One link member 55 is mounted, and a long hole 55a in the longitudinal direction is formed in the middle of the link member 55. In addition, the long hole 55a is provided with a protrusion 55b protruding from the steel bar 105a of the annealing path 105 to guide the movement direction of the link member 55. The front end of the link member 55 mounted on one side of the triangular protrusion 52 is rotatable to the rear end of the link member 55 of the other triangular protrusion 52 adjacent to the triangular protrusion 52 via the hinge 55c. To be connected.

In addition, the second triangular projection (52) is another long hole (55a) in the middle of the link member 55 formed on the opposite side of the oblique surface (52a), the projection (55b) protruding from the annealing path (105) Are formed to guide the direction of movement of the second link member 55. Then, the front end of the second link member 55 is rotatably connected to the rear end of the third link member 55 through the hinge 55c, and in this manner, the link member 55 to the final triangular protrusion 52. The driving force of the hydraulic cylinder 57 is transmitted through them.

According to the present invention configured as described above, the grip rolls 5 respectively provided at the tip of the pressing rod 11 by the springs 18 provided in the pivoting part 10 are separated from the door frame 122, that is, FIG. 5. In the state shown by the solid line. In this way, while the chain 135 moves up and down by the operation of the lifting motor 130, the door plate 110 is lowered to the charging hole 107 side of the annealing path 105.

At this time, the door plate 110 is moved up and down along the door passage 137 formed up and down in the annealing path 105 to enter the charging hole 107 of the annealing path 105.

Such a state is a state shown by a solid line in FIG. 5, in which the door plate 110 and the door frame 122 are not coupled. When the door plate 110 is located at the annealing furnace charging opening 107 as described above, the operator operates the hydraulic cylinder 57 of the driving unit 50 so that the rod moves the first triangular protrusion 52 and the link member 55. When pushed, the rotary roll 40 in contact with the inclined surface 52a of the triangular protrusion 52 moves laterally along the guide 37 due to the advancement of the triangular protrusion 52. That is, the movement of the moving rod 35 of the linear moving part 30 is advanced, the push rod 11 of the rotating part 10 facing the inclined surfaces 14, 32 due to the advance of the moving rod 35. The inclined surface 14 side is heard from the annealing path 105 side, the grip roll 5 on the opposite side presses the door plate 110 to the door frame 122. In this process, the spring 18 pressurizing the inclined surface 14 side of the push bar 11 is to allow the grip roll 5 to descend.

On the other hand, the operation of the second to the last triangular projection 52 at the same time as the operation of the first triangular projection (52) is performed, which is the first link member 55 through the hinge (55c) the second link member 55 ), The second link member 55 is connected to the third link member 55, and in turn, since the link members 55 are connected to the last, the driving force of the hydraulic cylinder 57 is the last triangular protrusion (52). Is delivered up to).

In this process, each of the link members 55 guides the movement direction of the link member 55 by interposing protrusions 55b in the long hole 55a provided in the middle thereof. 52 is a simultaneous operation, and the movement of all the moving rods 35 to the linear movement, so that all the grip roll (5) is rotated to press the door plate 110 to the door frame 122.

In this way, the door plate 110, as shown by the dotted line in Figure 5, presses the outer surface of the door plate 110 at least eight places, such a pressing operation is a sealing provided on the door frame 122 Due to the pressing of the member 150, a certain sealing effect can be obtained.

On the other hand, if you want to charge the coil (C) in the interior of the annealing furnace 105 in the state in which the door plate 110 is closed by the closing operation of the charging opening 107, the hydraulic cylinder 57 is operated in the opposite manner to the above By making the triangular projections 52 are reversed.

Therefore, the spring 18 provided in the pivot 10 is released by the pressing force from the hydraulic cylinder 57 side to operate the restoring force of the spring 18 to lower the inclined surface 14 side of the push bar 11. This causes the moving rods 35 of the linear moving part 30 to be reversed, and the pressing rods 11 are rotated in opposite directions with respect to the intermediate hinge 12, respectively, so that the grip rolls 5 are disposed on the door plate 110. Falling from.

In this way, the engagement state of the door plate 110 is released to enable the operator to raise the door plate 110, and the coil C to the inside of the annealing furnace 105 through the opened charging hole 107. It can be charged or withdrawn.

As described above, according to the present invention, the door plate 110 of the annealing path 105 can be pressurized in at least eight positions in a stable state, whereby the sealing force of the door plate 110 can be doubled. Therefore, it maintains a safe atmosphere gas in the high temperature annealing furnace 105, and provides a perfect sealing and locking device to secure the quality of the annealing heat treatment product, and to ensure the safety of the workplace by blocking harmful gas in the workplace. Obtained.

Claims (3)

In the device for sealing the charging opening 107 of the horizontal high temperature annealing furnace 105 in the production process of the electrical steel sheet using the door plate 110, A plurality of grip rolls 5 arranged at equal intervals along the outer side of the door plate 110 covering the charging holes 107 of the annealing path 105 to press at least eight places of the door plate 110; A plurality of push rods 11 having the grip rolls 5 respectively formed on one side thereof are connected to the hinge 12 in the middle thereof, and are rotatable, and a rotating part having an inclined surface 14 formed on the other side of each push rod 11. 10; A plurality of movable rods 35 having inclined surfaces 32 respectively corresponding to the inclined surfaces 14 of the rotating part 10 are provided on one side, and the movable rods 35 are linearly moved in the middle of the movable rods 35. It has a guide 37 to make, the other side of the movable rod 35 is a linear moving part 30 equipped with a rotary roll 40; And Equipped with a triangular projection (52) for moving the rotary rod (40) of each of the linear movement portion 30 to move the moving rod 35 straight, and having a link member 55 for connecting the triangular projection (52), respectively, And a drive unit (50) having a hydraulic cylinder (57) for moving the link members (55) back and forth to allow the triangular protrusions (52) to push the rotary rolls (40). . The method of claim 1, wherein the rotating part 10 is always pressed between the intermediate hinge 12 and the inclined surface 14, the pressing rod 11 on the inclined surface 14 side around the intermediate hinge 12. A spring 18 is mounted, the upper end of which is fixed to an inner upper surface of the X-shaped fixture 20 mounted on the steel bar 105a of the annealing path 105, and the lower end of the spring 18 is the push rod 11. By being connected to the upper surface of the push rod 11, the inclined surface 14 side is always pressed to the steel bar 105a side of the annealing path 105, the grip roll 5 around the intermediate hinge 12 is the door frame ( 122) The door lock of the annealing furnace, characterized in that to maintain the state heard from. According to claim 1, The link member 55 has a long hole (55a) is formed in the middle in the longitudinal direction, the projection protruding from the steel bar (105a) of the annealing path 105 in the long hole (55a) Door locking device of the annealing furnace, characterized in that the 55b is interposed to guide the moving direction of the link member (55).

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