JP6513939B2 - Noro picking device and method - Google Patents

Description

  The present invention relates to an apparatus and method for removing glue.

  DESCRIPTION OF RELATED ART Conventionally, there exists a thing of patent document 1 as an apparatus for removing slag (impurity such as metal oxide, slag) generated in a molten metal (molten metal) in a melting furnace.

  The gutter removing device described in Patent Document 1 includes a claw assembly including a plurality of claws, and a claw opening / closing device capable of opening and closing an interval between the claws included in the claw assembly. By closing the gap between the claws provided in the subassembly with the claw opening / closing device, the glue in the melting furnace is grasped between the claws and can be taken out.

JP, 2010-12512, A

  In the gutter removing device described in Patent Document 1, the gap between the respective claws is closed only by thrusting the tip of each claw provided in the claw assembly into the molten metal, and the surface of the molten metal I only grab a part of Noro that floats on the surface).

  On the other hand, the glue in the melting furnace adheres to the furnace wall, and when trying to take out the glue by grasping a part of the glue between the claws of the claw assembly, the glue which is caught between the claws is the furnace wall There is a possibility that it may be pulled down by the glue adhering to and spill out from between those nail parts. That is, it is difficult to efficiently take out a large amount of starch in the melting furnace.

  In addition, when the operator places a foot on the edge of the melting furnace or scrapes the norro in the large melting furnace in order to take out as much as possible of the melting furnace in the melting furnace, the operator operates during the scraping operation There is a safety problem of sliding the foot and falling into the melting furnace.

  An object of the present invention is to safely and efficiently take out a large amount of slag in a melting furnace.

The invention according to claim 1 includes a claw assembly including a plurality of claws, and a claw opening / closing device capable of opening and closing an interval between the claws included in the claw assembly, and the claw assembly The claw assembly includes the claws in each of the claws by closing the gap between the claws provided by the claws with the claw opening / closing device so that the glue in the melting furnace can be held between the claws and can be taken out. The tip portion of the tip is able to reach the surface of the molten metal in the melting furnace at a position close to the furnace wall of the melting furnace with a small gap, and the claw assembly can be pivoted about its own axis, A pivoting device is provided which is capable of applying a pivoting force to the slag in the melting furnace through the claws which are brought close to the furnace wall and reach the surface of the molten metal .

According to a second aspect of the present invention, in the first aspect, the claw opening and closing device further comprises an intermediate position in which each claw of the claw assembly is inserted into the melting furnace from above the melting furnace. Three positions: a spread position where the tips of the claws open from the above middle position and the tips of their claws come close to the furnace wall of the melting furnace, and a closed position where they are closed from the above middle position and grip the gutter between their claws It is designed to be switchable to

  According to a third aspect of the present invention, in the second aspect, the claw assembly further includes expansion angle control means for restricting the maximum expansion position of each claw. .

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the elevating device for raising and lowering the claw assembly with respect to the surface of the molten metal in the melting furnace is further provided. It is.

Invention, the slag-up device having a pawl portion assembly having a plurality of claw portions, the slag-up method of retrieving grabbed slag in the melting furnace, the pawl portions of the claw portion assembly according to claim 5 The claw portion assembly is pivoted about its own axis in a state where the front end portion of the rod is brought close to the furnace wall of the melting furnace with a small gap and reached the surface of the molten metal in the melting furnace, A turning force is applied to the glue in the melting furnace through the claws which are made to approach the furnace wall and reach the hot water surface .

The invention according to claim 6 is the process according to the invention according to claim 5, further comprising the steps of: positioning the claws of the claw assembly at an intermediate position and inserting the claws into the melting furnace from above the melting furnace; The respective claws of the claw assembly inserted inside are opened from the above-mentioned intermediate position so that the tips of the claws are brought close to the furnace wall of the melting furnace, and the claw assembly is about its own axis pivoted, and applying a swirling force to the slag of in close proximity to the furnace wall of the dissolving furnace melting furnace through the respective claw portions to reach the molten metal surface and imparting swirl force to Noro in the melting furnace And a step of closing each of the claws of the claw assembly from the above-mentioned intermediate position to hold the glue between the claws.

(Claims 1 and 5)
(a) By rotating the claw assembly about its own axis in a state in which the claws of the claw assembly of the throat removing device are inserted into the melting furnace and reach the surface of the molten metal in the melting furnace. A turning force is applied to the glue in the melting furnace . As a result, the glue adhering to the furnace wall is separated from the furnace wall by the turning force, and the edge between the glue and the furnace wall is cut. Then, when it is going to take out a part of the glue between the claws of the claw assembly and take out the glue, the other glue present in the periphery not held between those claws is on the side of the furnace wall. It is taken out together with being connected to the glue held between the above-mentioned claws without being pulled. A large amount of glue in the melting furnace can be efficiently taken out.

  The ability to remove large quantities of slag in the melting furnace efficiently as described above by the grate removing device eliminates the need for the operator to put a foot on the edge of the melting furnace or to scrape the grits in a large melting furnace. The grate in the melting furnace can be taken out safely and efficiently in large quantities.

(Claim 2, 6)
(b) Intermediate positions where the claws of the claw assembly are inserted into the melting furnace from the upper side of the melting furnace, and the tips of the claws are opened on the furnace wall of the melting furnace more open than the intermediate positions It can be switched to three positions, a close spread position and a closed position in which the claws are held between their claws by closing them rather than the middle position.

  Therefore, when each claw of the claw assembly is inserted into the melting furnace from above the melting furnace, the tip of the claw at the intermediate position is separated from the furnace wall of the melting furnace and There is no harm.

  Thereafter, the tips of the claws of the claw assembly inserted into the melting furnace are expanded from an intermediate position, and are brought into contact with the slag so as to aim at the slag in the vicinity of the furnace wall. As a result, it is possible to grip the claws of the claw assembly without excess in the vicinity of the furnace wall.

(Claim 3)
(c) When the tips of the claws of the claw assembly are expanded from the middle position in the above (b) to aim at the area near the furnace wall, the maximum expanded position of each claw is the expansion angle restriction Regulated by means. Therefore, it is possible to expand to the vicinity of the furnace wall as much as possible, and to grasp it without leaving any holes in the vicinity of the furnace wall while surely avoiding that the tips of the claws contact the furnace wall and damage the furnace wall .

(Claim 4)
(d) A lifting device is provided to lift and lower the claw assembly with respect to the surface of the molten metal in the melting furnace. Therefore, after raising the lifting device with an overhead crane or the like and bringing each claw of the claw assembly close to the melting furnace, the lifting device provided with the lifting device raises the height of the claw assembly relative to the surface of the melt in the melting furnace. Position can be set with high accuracy. Thereby, each nail | claw part of a nail | claw part assembly can be positioned in the suitable position with respect to a hot water surface, and the glue in a melting furnace can be taken out efficiently.

FIG. 1 is a front view showing a grate removing device. FIG. 2 is a side view showing the grate removing device. FIG. 3 is a plan view showing the grain removing device. FIG. 4 is an enlarged view of an essential part of FIG. FIG. 5 is an enlarged view of an essential part of FIG. FIG. 6 is a plan view showing a spread state of the claw assembly. FIG. 7 is a plan view showing the closed state of the claw assembly.

  1 to 3 is suspended by the overhead crane 1 and moved between the melting furnace 2 (FIGS. 6 and 7) and the grate collecting container (not shown). While removing the Noro, drop the removed Noro into the Noro collection container. The overhead crane 1 is driven by an operation switch provided in the operation box 1A.

  As shown in FIGS. 1 to 3, the grate removing device 100 is supported by a pedestal 11 suspended and supported by the overhead crane 1 and a pivot supported by a lower portion of the pedestal 11 via a pivoting device 50 described later. 12 and a claw support 13 suspended and supported by a lower part of the swivel base 12 via a lifting device 40 which will be described in detail later.

  The removing device 100 has a spread position and a closed position, which will be described later, between the claw assembly 20 having a plurality of (six in this embodiment) claws 21 and the claws 21 of the claw assembly 20. The claw portion support base 13 supports the claw portion opening / closing device 30 which can be opened and closed between the positions. As a result, the gutter removing device 100 closes (narrows) the intervals between the claws 21 provided in the claw assembly 20 with the claw opening / closing device 30, whereby the grit in the melting furnace 2 can be Grab it in between and make it removable. In addition, by opening the gap between the claws 21 provided in the claw assembly 20 by means of the claw opening / closing device 30, the grits removing device 100 can release the grits that the claws 21 grab and take out.

  The claw assembly 20 is located on the lower surface side of the claw support 13 on which the opening and closing cylinder 31 constituting the claw opening and closing device 30 is installed, at six positions in the circumferential direction around the central axis 31A of the opening and closing cylinder 31. Are provided with the respective claws 21. Each of the claws 21 is supported by the claw support 13 via the first and second two links 22 and 23. The claw portion 21 is fixed to the lower end portion of the first link 22, the lower end portion of the second link 23 is pivotally supported by the upper end portion of the first link 22, and the upper end portion of the second link 23 is It is pivotally supported by a support bracket 24 provided on the lower surface. Each of the claws 21 is made of graphitized carbon material and has a tongue plate shape whose tip is pointed (FIGS. 4 and 5).

  The claw opening / closing device 30 has an opening / closing cylinder 31 installed on the upper surface of the claw support 13 and is connected to the projecting end of the piston rod 32 of the opening / closing cylinder 31 penetrating to the lower surface of the claw support 13. The central portion of the bracket 33 is fixed, and the upper end portion of the connection link 34 is pivotally supported at each of six positions in the circumferential direction around the central portion of the connection bracket 33. Each lower end portion of each connection link 34 An intermediate portion of the first link 22 to which the claw portion 21 is fixed is connected.

  The opening / closing cylinder 31 is driven by an operation switch for the claw opening / closing device 30 provided on the operation rod 14 which is pin-coupled to the gantry 11, and the piston rod 32 is operated to extend and retract. The opening and closing cylinder 31 is a double rod type in which the piston rod 32 vertically penetrates, and the upward projecting portion of the piston rod 32 is provided with a downward extending stroke end regulating collar 32U, and the downward projecting portion of the piston rod 32 is upwardly contracted stroke end A regulation collar 32L is provided.

  When the piston rod 32 of the opening / closing cylinder 31 extends downward and displaces the connection bracket 33 downward, and the displacement of the connection bracket 33 is transmitted to the first and second links 22 and 23 via the connection link 34 The claws 21 of the claw assembly 20 are mutually opened to the spread position shown in FIG.

  When the piston rod 32 of the opening / closing cylinder 31 contracts upward to displace the connection bracket 33 upward, and the displacement of the connection bracket 33 is transmitted to the first and second links 22 and 23 via the connection link 34. The claws 21 of the claw assembly 20 are closed to each other in the closed position shown in FIG. In the closed state, the claws 21 of the claw assembly 20 mutually form a bowl shape, and form a hole-like space 25A in the central portion surrounded by the tips of the claws 21. A wedge-shaped air gap 25B is formed in which adjacent side edges sandwich each other (FIG. 7).

  Hereinafter, the structure for making it possible to safely and efficiently take out a large amount of slag in the melting furnace 2 will be described in detail.

(A) Opening and closing structure of the claw assembly 20 by the claw opening and closing device 30 The claw opening and closing device 30 is located above the melting furnace 2 as shown in FIGS. 4 and 5 for each claw 21 of the claw assembly 20. From the middle position M (in the present embodiment, a position along the vertical downward direction in which the claws 21 are parallel to the furnace wall 2A of the melting furnace 2) and those opened from the middle position M Switchable between three positions: an expanded position P where the tip of the claw 21 is close to the furnace wall 2A of the melting furnace 2 and a closed position C where the claw is gripped between the claws 21 by closing the intermediate position M Make it

  Although the above-mentioned opening and closing structure of the claw assembly 20 by the claw opening and closing device 30 may be any specific mechanism, it is configured as follows in this embodiment.

  That is, the first link 22 and the second link 23 arrange the projections 23A provided at the lower end of the second link 23 between the left and right stoppers 22L and 22R provided at the upper end of the first link 22 (see FIG. A protrusion may be provided at the upper end of the first link 22 and left and right stoppers may be provided at the lower end of the second link 23). When the left stopper 22L of the first link 22 engages with the projection 23A of the second link 23, the first link 22 and the second link 23 have a concave shape toward the central axis 31A of the opening / closing cylinder 31 It bends like a letter (Figure 5). When the right stopper 22R of the first link 22 engages with the projection 23A of the second link 23, the first link 22 and the second link 23 have a convex shape toward the central axis 31A of the opening / closing cylinder 31 It bends in the shape of a letter. When the projection 23A of the second link 23 is positioned between the left stopper 22L and the right stopper 22R of the first link 22, the first link 22 and the second link 23 are in a straight line with each other (solid line state in FIG. 4).

  Further, in the second link 23 and the support bracket 24, a projection 23B provided on the upper end portion of the second link 23 is disposed between the upper and lower stoppers 24U and 24L provided on the support bracket 24 (protrusion on the support bracket 24 , And upper and lower stoppers may be provided on the upper end of the second link 23). When the projection 23B of the second link 23 engages with the upper stopper 24U of the support bracket 24, the position of the second link 23 in the expansion direction is restricted (FIG. 4). When the projection 23B of the second link 23 engages with the lower stopper 24L of the support bracket 24, the position of the second link 23 in the closing direction is restricted (FIG. 5).

  Therefore, when the respective claws 21 of the claw assembly 20 are inserted into the melting furnace 2 from above the melting furnace 2, the operator operates while looking at the open and closed positions of the respective claws 21 of the claw assembly 20. When the piston rod 32 of the opening / closing cylinder 31 is stopped halfway before reaching the end of the downward extension stroke by the operation switch for the claw portion opening / closing device 30 provided on the rod 14, the gravity acting on the claw portion 21 acts as the first link 22 The second link 23 is positioned substantially on the vertical line, and as a result, the claws 21 of the claw assembly 20 are positioned at the intermediate position M described above. At this time, the protrusion 23A of the second link 23 is positioned between the left and right stoppers 22L and 22R of the first link 22. Further, the projection 23B of the second link 23 engages with the upper stopper 24U of the support bracket 24, and positions the second link 23 at the end in the expanding direction.

  The method of positioning the claws 21 of the claw assembly 20 at the above-described intermediate position M is performed using the opening / closing cylinder 31 which can be electrically stopped in an intermediate manner without using the manual operation of the operator as described above. Alternatively, the piston rod 32 of the opening / closing cylinder 31 may be intermediately stopped at a predetermined position by an operation switch for the claw portion opening / closing device 30 provided on the rod 14.

  Next, when the respective claws 21 of the claw assembly 20 are inserted into the melting furnace 2 with the claws 21 positioned at the above-described intermediate position M (the tip of each claw 21 is the hot water in the melting furnace 2 Positioned on the surface and not in contact with the glue floating on the surface of the hot water, however, the tip of each claw 21 may touch the glue), a claw opening and closing device provided to the operating rod 14 by the operator When the piston rod 32 of the opening / closing cylinder 31 is displaced to the downward extension stroke end by the operation switch for 30 (the downward extension stroke end restriction collar 32U is held on the upper end of the opening / closing cylinder 31), the claw assembly The claws 21 of the solid body 20 are opened from the intermediate position M to the above-described spread position P, and the tips of the claws 21 are brought close to the furnace wall 2A of the melting furnace 2. At this time, while the projection 23B of the second link 23 is engaged with the upper stopper 24U of the support bracket 24, the right stopper 22R of the first link 22 is engaged with the projection 23A of the second link 23. The second link 23 is bent in an inverted V-shape to position the claws 21 of the claw assembly 20 at the maximum spread position. The left and right stoppers 22L and 22R of the first link 22 provided in the claw assembly 20, the protrusions 23A and 23B of the second link 23, and the upper and lower stoppers 24U and 24L of the support bracket 24 are as described above. The expansion angle control means for restricting the maximum expansion position is configured.

  The piston rod 32 of the opening / closing cylinder 31 is not limited to one in which the extension blocking end restriction collar 32U is held against the upper end of the opening / closing cylinder 31 and positioned at the downward extension stroke end as described above. When the operator looking at the open / close position of each claw 21 of the solid body 20 visually recognizes that the tip of the claw 21 is in proximity to the furnace wall 2A of the melting furnace 2, the operator of the piston rod 32 operates the switch by the operator. The extension movement can be stopped and the piston rod 32 can be positioned at its downward extension stroke end. The inner diameter of the furnace wall 2A in the melting furnace 2 corresponds to the fact that it is not always uniform.

  Next, when holding the grommet in the melting furnace 2 between the claws 21 of the claw assembly 20, the operator uses the operation switch for the claw opening / closing device 30 provided on the operation rod 14 of the opening / closing cylinder 31. When the piston rod 32 is displaced to the upward contraction stroke end (the upward contraction stroke end restriction collar 32L is brought into contact with the lower end of the opening / closing cylinder 31), each claw 21 of the claw assembly 20 is from the expanded position P After the intermediate position M, it is closed to the closed position C, which forms a bowl shape, and it is possible to hold the glue between those claws 21. At this time, the left stopper 22L of the first link 22 engages with the projection 23A of the second link 23, the projection 23B of the second link 23 engages with the lower stopper 24L of the support bracket 24, and the first link 22 and the first link 22 The two links 23 are bent in a V-shape to position the claws 21 of the claw assembly 20 in the maximum closed position (closed position). The respective claws 21 of the claw assembly 20 can have their tips abutted against each other at the above-mentioned maximum closing position.

(B) Lifting Structure of Claw Assembly 20 by Lifting Device 40 The lifting device 40 raises and lowers the claw assembly 20 with respect to the hot water surface in the melting furnace 2.

  Although the above-described lifting and lowering structure of the claw assembly 20 by the lifting and lowering device 40 may be any specific mechanism, it is configured as follows in this embodiment.

  That is, the lifting device 40 has the pair of left and right lifting cylinders 41 and the pair of lifting guides 42 standing between the lower surface of the turntable 12 provided below the gantry 11 and the upper surface of the claw support 13. Set up and configured.

  Therefore, when the operator extends and lowers the elevating cylinder 41 by the operation switch for the elevating device 40 provided on the operating rod 14, the hot water in the melting furnace 2 is the claw assembly 20 supported by the claw support 13. It will be raised and lowered relative to the surface.

(c) Pivoting structure of the claw assembly 20 by the pivoting device 50 The state in which each claw 21 of the claw assembly 20 is in contact with the gutter in the melting furnace 2 (the tip of each claw 21 is The claw assembly 20 is pivoted about its own axis (which is coaxial with the central axis 31A of the opening / closing cylinder 31 in the present embodiment) in a state where it is inserted into the slurry floating on the surface of the molten metal in the melting furnace 2).

  The above-described pivoting structure of the claw assembly 20 by the pivoting device 50 may be of any specific mechanism, but is configured as follows in this embodiment.

  That is, the pivoting device 50 supports the pivot shaft 51 at the center of the gantry 11, and fixes and suspends the pivot platform 12 at the lower end portion of the pivot shaft 51 penetrating the pedestal 11. On the upper side of the gantry 11, the pinion 52 is fixed to the upper end portion of the pivot shaft 51, and the rack 53 meshing with the pinion 52 is supported by the rack guide 54 fixed to the upper surface of the gantry 11 so as to linearly reciprocate. Further, the piston rod 56 of the turning cylinder 55 fixed to the upper surface of the gantry 11 is connected to the axial end of the rack 53 via the connection bar 57.

  Therefore, when the operator extends and retracts the turning cylinder 55 by the operation switch for the turning device 50 provided on the operation rod 14, the turning angle of the turning shaft 51 is constant via the meshing of the pinion 52 and the rack 53. Reverse the range. As a result, the swivel base 12 and the claw support 13 suspended from the swivel shaft 51 rotate in the forward and reverse direction together with the rotary shaft 51 and swivel, and the claw assembly 20 supported by the claw support 13 is self-axialized. It will be made to turn around. In the present embodiment, the claw assembly 20 is rotated forward and reverse in a swing angle range of 120 degrees, for example, and the six claws 21 are rotated 120 degrees in the normal and reverse rotation directions.

Hereinafter, a method for removing grazing by the operator using the removing raft device 100 will be described.
(1) The overhead crane 1 is driven by the operation switch of the operation box 1A, and the Noro picking device 100 is moved horizontally to position the melting furnace 2 above the melting furnace 2, and the claw assembly 20 of the Noro picking device 100 is melted. It is lowered and stopped so as to be positioned directly above the furnace 2.

  (2) The piston rod 32 of the opening / closing cylinder 31 is intermediately stopped as described above by the operation switch for the claw portion opening / closing device 30 provided on the operation rod 14 of the punch removing device 100, and each claw of the claw portion assembly 20 The unit 21 is positioned at the intermediate position M described above. Thereby, each claw portion 21 is positioned vertically downward parallel to the furnace wall 2A of the melting furnace 2 and stopped.

  Subsequently, the raising and lowering cylinder 41 is extended by the operation switch for the raising and lowering device 40 provided on the operation rod 14 of the gutter removing device 100, and each claw portion 21 of the claw portion assembly 20 is the furnace wall 2A of the melting furnace 2. And the tip of each claw 21 is positioned on the surface of the molten metal in the melting furnace 2 and stopped. At this time, the tips of the claws 21 are not in contact with the glue floating on the surface of the hot water. However, the tip of each claw 21 may be in contact with the glue floating on the surface of the hot water.

  (3) The piston rod 32 of the opening / closing cylinder 31 is displaced to the downward extension stroke end as described above by the operation switch for the claw portion opening / closing device 30 provided on the operation rod 14 of the punch removing device 100, Each nail | claw part 21 of the solid 20 is positioned to the above-mentioned expansion position P, and it stops. Thereby, the tip end of each claw 21 is positioned at the maximum spread position close to the furnace wall 2A of the melting furnace 2. At this time, a small gap g is provided between the tip of each claw 21 and the furnace wall 2A of the melting furnace 2 (FIG. 6).

  Subsequently, the raising and lowering cylinder 41 is extended by the operation switch for the raising and lowering device 40 provided on the operation rod 14 of the gutter removing device 100, and the tip of each claw portion 21 of the claw portion assembly 20 is the melting furnace described above Move down to a position where it reaches the surface of the hot metal at a position close to the furnace wall 2A of 2, and stop the extension operation of the elevating cylinder 41 in a state where the tip of each claw 21 is inserted into the gutter floating on the surface .

  (4) The turning cylinder 55 is driven by the operation switch for the turning device 50 provided on the operation rod 14 of the take-off device 100, and the turning shaft 51 is rotated forward and reverse within a predetermined turning angle range, and thus the claw assembly Rotate 20 around your axis. As a result, a swirling force is applied to the inside of the melting furnace 2 through which the claws 21 of the claw assembly 20 are inserted, and the glue adhering to the furnace wall 2A is also swirled and separated from the furnace wall 2A. And the edge of the furnace and the furnace wall 2A will be cut.

  (5) The piston rod 32 of the opening / closing cylinder 31 is displaced to the upward contraction stroke end as described above by the operation switch for the claw portion opening / closing device 30 provided on the operation rod 14 of the punch removing device 100 Each nail | claw part 21 of the solid 20 is positioned in the above-mentioned closed position C, and it stops. Thereby, each claw portion 21 is positioned at the maximum closed position (closed position) and has a bowl shape, and extends substantially over the entire surface of the hot water surface surrounded by the furnace wall 2A of the melting furnace 2 and the furnace wall according to the above (4) It becomes something which grasps between the claws 21 with much of the cut grated with 2A.

  Subsequently, the raising and lowering cylinder 41 is extended by the operation switch for the raising and lowering device 40 provided on the operation rod 14 of the gutter removing device 100, and the claw assembly 20 holding the gutter in the closed position described above. Each claw 21 is pulled up above the melting furnace 2 and stopped. The other grains in the periphery not held by the claws 21 are also pulled and pulled up the melting furnace 2 so as to be dragged in a state of being connected to the grains held by the claws 21.

  At this time, the molten metal scooped by the claws 21 of the claw portion assembly 20 together with the holes is next to the hole-like void 25A in the central portion surrounded by the tips of the claws 21 and the claws 21 adjacent to each other. From the wedge-shaped void 25B which the side edges sandwich, it falls out towards the inside of the melting furnace 2.

  (6) The overhead crane 1 is driven by the operation switch with which the operation box 1A is provided, and the Noro picking device 100 is raised above the melting furnace 2 and horizontally moved to position the Noro picking device 100 above the Noro collection container. Let it stop.

  Subsequently, the piston rod 32 of the opening / closing cylinder 31 is again displaced downward to the extension stroke end by the operation switch for the claw portion opening / closing device 30 provided on the operation rod 14 of the gutter removing device 100. Each claw portion 21 is positioned at the above-described spread position P and stopped. As a result, the claws 21 of the claw assembly 20 are gripped and the glue taken out of the melting furnace 2 is released from each claw 21 and dropped and collected in the lower collecting container below.

Therefore, according to the grain removing device 100 of the present embodiment, the following effects can be obtained.
(a) Each claw 21 of the claw assembly 20 of the scraping device 100 is inserted into the melting furnace 2 and reaches the surface of the molten metal in the melting furnace 2. By turning it around, a turning force is applied to the glue in the melting furnace 2 . Thereby, the glue adhering to the furnace wall 2A is separated from the furnace wall 2A by the turning force, and the edge between the glue and the furnace wall 2A is cut. Then, when it is going to take out a part of the glue between the claws 21 of the claw assembly 20 and take out the glue, the other glue present in the periphery not held between the claws 21 is the furnace wall It is taken out together with being connected to the glue held between the above-mentioned claws 21 without being pulled to the side of 2A. A large amount of glue in the melting furnace 2 can be efficiently taken out.

  The operator can place his / her foot at the edge of the melting furnace 2 or take a large-sized melting furnace 2 and scrape the noodles, since the raw material in the melting furnace 2 can be efficiently taken out in a large amount as described above Of the melting furnace 2 can be removed safely and efficiently in large quantities.

  (b) An intermediate position M for inserting the respective claws 21 of the claw assembly 20 into the interior of the melting furnace 2 from above the melting furnace 2 and a tip end of the claws 21 more open than the intermediate position M Switchable between three positions, an expanded position P close to the furnace wall 2A of the melting furnace 2 and a closed position C in which the claw portion 21 is closed more than the intermediate position M and grips the claws between them.

  Therefore, when the claws 21 of the claw assembly 20 are inserted into the melting furnace 2 from above the melting furnace 2, the tip of the claws 21 at the intermediate position M is the furnace wall 2 A of the melting furnace 2. And it does not damage the furnace wall 2A.

  Thereafter, the tips of the claws 21 of the claw assembly 20 inserted into the melting furnace 2 are expanded from the intermediate position M so as to aim at the gauze in the vicinity of the furnace wall 2A and contact the gourse. Become. As a result, it is possible to grip between the claws 21 of the claw assembly 20 up to the vicinity of the furnace wall 2A without excess.

  (c) When the tip of each claw 21 of the claw assembly 20 is expanded from the intermediate position M in the above-mentioned (b) to aim at the vicinity of the furnace wall 2A, the maximum expanded position of each claw 21 Is restricted by the expansion angle restricting means. Therefore, the tip of each claw portion 21 contacts the furnace wall 2A and reliably avoids damage to the furnace wall 2A, while expanding to the vicinity of the furnace wall 2A as much as possible, to the bottom of the furnace wall 2A You can grab it without waste.

  (d) A lifting device 40 for lifting and lowering the claw assembly 20 relative to the surface of the molten metal in the melting furnace 2 is provided. Therefore, after raising the Noro picking device 100 by the overhead crane 1 etc. and bringing each claw 21 of the claw assembly 20 close to the melting furnace 2, the hot water within the melting furnace 2 is raised by the lifting device 40 provided by the Noro picking device 100. The height position of the claw assembly 20 with respect to the surface can be set with high accuracy. Thereby, each nail | claw part 21 of the nail | claw part assembly 20 can be positioned in the suitable position with respect to a hot water surface, and the glue in the melting furnace 2 can be taken out efficiently.

  Further, in the gutter removing device 100, each claw 21 of the claw assembly 20 is supported on the claw support 13 via the first and second two links 22 and 23, and the first link Since the second link 23 and the second link 23 can be bent in a U-shape, each of the claws 21 is inclined more greatly with respect to the vertical line at the closing position C, and has a bowl shape that is easy to scoop the throat.

  The embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like within the scope of the present invention. Included in the present invention. For example, not only an air cylinder etc. but an electric motor etc. may be used as an actuator of claw part opening-and-closing device 30, elevator device 40, and turning device 50.

  Further, the claw opening / closing device 30 is configured to switch the respective claws 21 of the claw assembly 20 to three positions of the intermediate position M, the spread position P, and the closed position C, and the present of each claw 21 detected by the detector. It is also possible to adopt one that can be controlled so as to switch and set the open / close position to the above three positions based on the position.

  According to the apparatus and method for removing groats of the present invention, it is possible to take out the grate in the melting furnace safely and efficiently in large quantities.

DESCRIPTION OF SYMBOLS 2 Melting furnace 2A Furnace wall 20 Claw part assembly 21 Claw part 22 1st link 22L, 22R Stopper 23 2nd link 23A, 23B Protrusion 24 Support bracket 24U, 24L Stopper 30 Claw part opening and closing device 31 Cylinder for opening and closing 40 Lifting device 41 Lifting cylinder 50 Turning device 51 Turning shaft 55 Turning cylinder 100

Claims (6)

A claw assembly including a plurality of claws, and a claw opening / closing device capable of opening and closing an interval between the claws of the claw assembly;
In a gutter removing device capable of grasping grate in the melting furnace between the claws and taking it out by closing the gap between the claws provided in the claw assembly by the claw opening and closing device,
The claw assembly is capable of reaching the surface of the molten metal in the melting furnace at a position where the tip of each claw is close to the furnace wall of the melting furnace with a small gap,
The claw assembly can be pivoted about its own axis, and a swirling force can be applied to the glue in the melting furnace through the claws which are brought close to the furnace wall of the melting furnace and reached the hot water surface. A grate removing device characterized by comprising: The claw opening / closing device is opened from an intermediate position where the claws of the claw assembly are inserted into the melting furnace from above the melting furnace, and the tips of the claws are melted by opening from the intermediate position. An apparatus for removing grits according to claim 1, which can be switched to three positions, an expanded position close to the furnace wall of the furnace and a closed position for closing the grips between the claws by closing from the intermediate position.   3. The apparatus according to claim 2, wherein the claw assembly includes expansion angle control means for restricting the maximum expansion position of each claw.   The apparatus for removing grits according to any one of claims 1 to 3, further comprising a lifting device for lifting and lowering the claw assembly with respect to the surface of the molten metal in the melting furnace. In a scraping device having a claw assembly including a plurality of claws, the scraping method in the melting furnace is performed by grasping and removing the scrap in the melting furnace,
The tips of the claws in the claw assembly are brought close to the furnace wall of the melting furnace with a small gap, and are allowed to reach the surface of the molten metal in the melting furnace. And a swirling force is applied to the glue in the melting furnace through the claws which are made to move close to the furnace wall of the melting furnace and reach the surface of the molten metal. Positioning the claws of the claw assembly at an intermediate position and inserting the claws into the interior of the melting furnace from above the melting furnace;
The claws of the claw assembly inserted into the melting furnace are opened from the above intermediate position to bring the tips of the claws close to the furnace wall of the melting furnace, and the claw assembly is self-axialized. Applying a turning force to the glue in the melting furnace through the claws which are made to turn around and approach the furnace wall of the melting furnace and reach the hot water surface ;
6. The method according to claim 5, further comprising the steps of: closing the claws of the claw assembly in which the turning force is applied to the glue in the melting furnace from the intermediate position and holding the glue between the claws. How to take.

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