JP4036873B2 - Roll segment reversing support device - Google Patents

Description

  The present invention relates to a roll segment reversal support that can be reversed for maintenance and the like with respect to a roll segment that is used for secondary cooling to the slab complete solidification point after primary cooling of molten steel with a mold. Relates to the device.

  In the continuous casting method, a solidified shell is formed in the outer shell by first cooling the cast molten steel with the mold that constitutes the continuous casting equipment, and then a plurality of pieces installed between the position immediately below the mold and the complete solidification point of the slab. Secondary cooling is provided by the base roll segment. As a result, solidification of the internal unsolidified portion is promoted. At this time, each roll segment is used to guide the cast piece and perform drawing.

  In the continuous casting machine configured as shown in FIG. 7, the molten steel 100 is injected from the tundish 111 through the immersion nozzle 112 into the mold 115 having the cooling structure 113 and provided with the vibration device 114. Under the mold 115, a plurality of roll segments 116 are arranged, and a casting line 117 is formed in which a vertical portion and a curved portion are formed by a guide roll group. Therefore, the slab 102 extracted from the mold 115 passes through a casting line 117 including a horizontal portion through a curved portion from a vertical portion, and is cooled and solidified to be carried out.

In such a continuous casting machine, maintenance is performed on the roll segment 116 for exchanging rolls and adjusting alignment. Therefore, the roll segment 116 is transported to a maintenance shop where it is lifted and supported. Since the roll segment 116 needs to be reversed during maintenance, a reverse support device that can be reversed is used for maintenance.
Japanese Laid-Open Patent Publication No. 7-185757 proposes a roll segment reverse support device. 8 and 9 are views showing the roll segment reversal support device described in the publication, FIG. 8 is a side view of the whole device, and FIG. 9 is a view showing a rotating part of the device.

  The roll segment 116 is provided with a plurality of rolls 122 with respect to the segment frame 121, and trunnions 123 are formed at the center of both ends. The roll segment reversal support device 150 is configured so that the trunnion 123 can be received and supported by the gantry 131. The cradle 131 is erected on a carriage 133 movable on the rail 132 and can be adjusted according to various frame sizes of the roll segment. In addition, the rotation unit 135 in which the roll segment 116 is disposed at the center is provided with a ring gear 136 at the center of the outer periphery, which meshes with the pinion gear of the motor 137. In the rotation unit 135, an annular frame 138 for supporting the roll segment 116 is formed integrally with the ring gear 136, and the reversing operation of the rotation unit 135 can be smoothly performed by the support roller 139.

The roll segment 116 is hung and transported by an overhead crane so that the wire is hooked on the trunnion 123, and is inserted into the rotating unit 135 from the opening on the left side of FIG. 9. Supported. After that, the roll segment 116 is supported by the positioning lever 142 being applied to the roll 122 by the extension operation of the cylinder 141. The rotation of the motor 137 is transmitted to the rotation unit 135 via the ring gear 136, and the roll segment 116 supported in the rotation unit 135 is reversed.
JP-A-7-185757 (page 2-3, FIG. 1 and FIG. 2) Japanese Patent Laying-Open No. 2003-25051 (page 3, FIG. 4)

  The conventional roll segment reversal support device 150 described above has a structure that supports trunnions 123 provided at both ends of the segment frame 121 around the center of rotation. However, since the position and size of the trunnion differ depending on the roll segment, a roll segment that is different from the roll segment 116 described above, that is, a roll segment that is not located at the position where the trunnion is the rotation center with respect to the segment frame can be handled. could not.

On the other hand, the roll segment reversing support device 150 is inconvenient when the supported roll segment 116 is maintained because the rotation unit 135 is placed inside and surrounds the center, and the work space becomes narrow.
Further, the roll segment reversal support device 150 having a rotation structure by the rotation unit 135 has a problem that the device itself becomes very large as compared with the roll segment 116 to be handled.

  Accordingly, an object of the present invention is to provide a roll segment reversal support device in which the target roll segment is not limited by the mounting position of the trunnion, etc., in order to solve such a problem.

  A roll segment reversal support device according to the present invention supports a roll segment constituting a casting line of a continuous casting facility via a trunnion provided in the segment frame, and reverses the vertical direction. A reversing support having a rotation axis and rotatably supported at a predetermined height, a rotating means for rotating the reversing support, and the reversing support. A gripping member that is movably provided to sandwich and support the trunnion of the segment roll from above and below, and an auxiliary member that is provided on the reverse support and supports the segment frame of the roll segment from the lateral direction. It is characterized by having.

Further, in the roll segment reverse support device according to the present invention, the reverse support is a rectangular frame formed by matching the shape so that the planar shape surrounds the rectangular segment frame, and is formed at the center of the short side portion. It is preferable that the rotating means is a motor with a speed reducer supported by two projecting rotating shafts and connected to one of the rotating shafts via a rotation transmitting means.
In the roll segment reversing support device according to the present invention, the gripping member is slidably mounted on a gripping block for sandwiching one or more trunnions formed on a segment frame and the reversal support. It is preferable to include a trunnion gripping frame and positioning means for adjusting the position of the gripping block in the vertical direction with respect to the trunnion gripping frame.

In the roll segment reversing support device according to the present invention, the gripping block and the trunnion gripping frame are provided so as to overlap each other in the vertical direction, and the gripping block grips the trunnion at a position where the trunnion gripping frame overlaps the reversal support. It is preferable that it is formed so as to enter between the frame and the reverse support.
Moreover, it is preferable that the roll segment inversion support apparatus according to the present invention has a locking means for preventing the inversion support body from rotating in a horizontal state.

  In the roll segment reversal support device according to the present invention, the roll segment conveyed by an overhead crane or the like is held by the reversal support, in which the segment frame of the roll segment is put into a frame-shaped reversal support body, The trunnion is supported by the gripping member positioned on the lower side, and then the upper gripping member is moved and positioned with respect to the reversal support, and the trunnion is sandwiched from above and below to be supported. It is held so as to prevent misalignment during reversal. And the roll segment hold | maintained at the roll segment inversion support apparatus rotates integrally with an inversion support body by a rotation means, and upside down is performed.

  Therefore, according to the roll segment reversal support device according to the present invention, the roll segment is held by holding the trunnion by the holding member, so that the target roll segment is not limited by the position or number of the trunnions. However, it is possible to provide a roll segment inversion support device that is not limited by the trunnion mounting position.

  Next, an embodiment of the roll segment reverse support device according to the present invention will be described below with reference to the drawings. 1 and 2 are views showing the roll segment reversal support device of the present embodiment in a state of supporting the roll segment, FIG. 1 is a plan view of the device, and FIG. 2 is a side view of the device. It is shown in a partial cross section.

  First, the roll segment 160 supported by the roll segment reverse support device 1 of the present embodiment will be briefly described. The roll segment 160 constitutes a casting line 117 of a continuous casting machine as shown in FIG. 7, and a plurality of rolls 162 have an axis in the longitudinal direction with respect to a segment frame 161 having a rectangular planar shape. They are arranged in parallel in the short direction. Further, since it is necessary to change the thickness of the slab in the continuous casting machine, four hydraulic cylinders 163 for moving the position of the roll 162 are provided. The segment frame 161 has two different trunnions 165 and 166 protruding from both ends of the short side.

  The roll segment reversal support device 1 of the present embodiment is provided with a reversal support frame 11 that reversely supports various roll segments including the roll segment 160. The reversal support frame 11 is a rectangular frame that matches the shape of the roll segment 160, and has a size that can accommodate roll segments of different sizes. And it is comprised with the hollow square pipe steel in order to lighten itself, maintaining the intensity | strength which supports the roll segment 160. As shown in FIG.

  The reversal support frame 11 is configured such that a rotating shaft 12 formed at the center of the short side portion 11a is supported by a bearing 13 and rotates with a rotation center in the longitudinal direction. The position of the rotating shaft 12 needs to be high enough to allow the reversal support frame 11 to rotate. Therefore, the bearing 13 is disposed on a mounting frame 16 erected on the base 15. Accordingly, the reversal support frame 11 is stretched over the mounting frame 16 on the base 15 and is rotatably supported in a floating state.

A motor 17 with a speed reducer is used to rotate the reverse support frame 11. The motor 17 is installed on a base provided on the base 15, and a pulley 18 fixed to the output shaft and a pulley 19 fixed to the rotating shaft 12 of the reverse support frame 11 are connected by a belt 20. The pulleys 18 and 19 and the rotation transmission means for the belt 20 that transmit the rotation from the motor 17 to the reversal support frame 11 are configured in a case 21.
Since the reversing support frame 11 that rotates rotates the roll segment 160 in a horizontal state, a lock mechanism for stabilizing the horizontal state is provided. That is, the lock pin 22 is provided on the mounting frame 16, and this is advanced and retracted by the rotation of the handle 23 so as to enter and exit the pin hole formed in the reverse support frame 11.

  The inversion support frame 11 is provided with a gripping member that holds the roll segment 160 placed in the frame via trunnions 165 and 166. That is, the roll segment reverse support device 1 of this embodiment can rotate the roll segment 160 integrally with the reverse support frame 11 by grasping and holding the trunnions 165 and 166 provided on the roll segment 160 from above and below. I am doing so. Here, FIG. 3 is a diagram showing an AA cross section of the roll segment reversing device shown in FIG.

  First, trunnion gripping frames 31 are provided in a pair of upper and lower sides at both ends in the longitudinal direction of the inverted support frame 11. The trunnion gripping frame 31 is provided so as to be parallel to the short side portion 11a of the inverted support frame 11 and to be spanned over the long side portion 11b. As shown in FIG. 3, the pair of upper and lower trunnion grip frames 31 are formed in a shape having a bent portion so that the distance between the center portion is increased in the vertical direction (direction orthogonal to the inverted support frame 11). The trunnion gripping frame 31 is made of hollow square pipe steel so as to reduce the weight of the trunnion gripping frame 31 while maintaining the strength sufficient to support the roll segment 160.

  The trunnion gripping frame 31 is attached so as to be able to move according to the size of the roll segment 160. This is because if the roll segment size is different, the distance between the trunnions at both ends in the longitudinal direction changes, and the position of the trunnion gripping frame 31 needs to be adjusted according to the distance. Therefore, as shown in FIG. 1, rails 32 are fixed to both ends of the long side portion 11 b of the inverted support frame 11, and the trunnion gripping frame 31 is slid by sliders 33 formed at both ends of the rail 32. It is movably fitted. Thus, the position of the trunnion gripping frame 31 can be adjusted in the longitudinal direction of the reverse support frame 11 according to the size of the roll segment.

  The trunnion gripping frame 31 is provided with a gripping block 35 that directly grips the trunnions 165 and 166 of the roll segment 160. The grip block 35 is a rod-shaped member having a length capable of gripping trunnions 165 and 166 formed at the end of the roll segment 160 at a time. The trunnion gripping frame 31 is provided with three tightening handles 36 for moving the gripping block 35 in the vertical direction. In the tightening handle 36, a rod portion in which a screw is spirally formed is threaded through the trunnion gripping frame 31, and the gripping block 35 is connected to the tip of the rod so that the rotation is not directly transmitted. Accordingly, the rotation of the tightening handle 36 moves the rod portion in the axial direction with respect to the trunnion gripping frame 31 so that the grip block 35 is positioned in the vertical direction.

  In the roll segment reversal support device 1 of this embodiment, the trunnions 165 and 166 are sandwiched from above and below by such a pair of gripping blocks 35. If the roll segment 160 is reversed as it is, the roll segment 160 will be displaced. Therefore, two auxiliary handles 38 are provided on the long side portions 11b on both sides of the reverse support frame 11 so as to support the roll segment 160 from the side. The auxiliary handle 38 has a spirally threaded rod portion threaded through a spiral pipe 39 provided in the long side portion 11b of the inverted support frame 11 and penetrates the roll segment 160 at its tip. The pressing plates in contact with each other are connected so as to block the rotation.

  The roll segment reversal support device 1 has a reversal support frame 11 having a short side and a long side of 3.4 m and 5.7 m, respectively, so that it can be rotated at a height of 2 m or more. Is installed. Therefore, a work table 40 as shown in FIGS. 5 and 6 is assembled around the roll segment reversing support device 1 so as to facilitate the work, and an operator's scaffolding is provided. The work table 40 is formed with work parts 41 on both sides along the longitudinal direction of the staircase and the reverse support frame 11, and the work part 41 is formed at a height lower than that of the reverse support frame 11 in the horizontal state. A balustrade 42 for preventing the operator from falling is provided around.

Next, maintenance of the roll segment 160 using such a roll segment reverse support device 1 will be described. The roll segment 160 is suspended from an overhead crane, for example, by hooking a wire on the trunnions 165, 166, and is transported to and held by the roll segment reversal support device 1 in a balanced state so as to be in a horizontal state.
In the roll segment reverse support device 1, the reverse support frame 11 is positioned in a horizontal state with the lock pin 22 inserted. The reversal support frame 11 is aligned with the trunnion gripping frame 31 according to the size of the roll segment 160.

For this purpose, first, the trunnion gripping frames 31 on both sides below the reversal support frame 11 are moved along the rails 32 so that the sliders 33 are moved to match the distances between the trunnions 165 and 166 at the longitudinal ends of the roll segment 160. . After that, as shown in FIG. 4, the trunnions 165 and 166 of the roll segment 160 conveyed by the overhead crane are placed on the gripping block 35 of the aligned trunnion gripping frame 31.
At this time, the trunnion gripping frame 31 on the upper side of the reverse support frame 11 is moved to a position that does not interfere with the insertion of the roll segment 160 into the reverse support frame 11. Since the trunnion gripping frame 31 has a bent portion so that the center portion extends in the vertical direction, the gripping block 35 is not limited to the trunnion gripping frame 11 even if it overlaps the short side portion 11a of the inverted support frame 11 as shown in FIG. 31 and the short side 11a.

  After the roll segment 160 is placed on the lower trunnion gripping frame 31, the upper trunnion gripping frame 31 is moved along the rail 32 and positioned so as to overlap the trunnions 165 and 166. Thereafter, by rotating the tightening handle 36, the rod portion having a spiral groove is rotated, the trunnion gripping frame 31 penetrated is screwed, and the gripping block 35 connected to the tip of the rod is lowered. Then, by continuing to turn the tightening handle 36, the trunnions 165 and 166 of the roll segment 160 are sandwiched between the upper and lower gripping blocks 35.

  The roll segment 160 is thus held by the trunnions 165 and 166 and is held by the reversal support frame 11. However, when the roll segment 160 is reversed as it is, it cannot be held only by the gripping force of the gripping block 35 and is displaced. Therefore, the roll segment 160 is further supported from the lateral side by the auxiliary handle 38. That is, the auxiliary handle 38 provided on the long side portion 11b of the reverse support frame 11 is rotated, and the roll segment 160 is supported from both sides by the pressing plate at the tip of the rod.

  Thus, after the trunnions 165, 166 are sandwiched from above and below and the roll segment 160 itself is supported from the side so as not to be displaced, it is held on the reverse support frame 11, and then the roll 162 is exchanged or alignment adjustment is performed. Maintenance is performed. At that time, when the roll segment 160 is reversed, the lock pin 22 is once removed and the motor 17 with a speed reducer is driven. The rotation of the motor 17 with a speed reducer is transmitted from the pulley 18 to the pulley 19 via the belt 20, and the reverse support frame 11 rotates around the rotating shaft 12 supported by the bearing 13. Therefore, the roll segment 160 held by the reverse support frame 11 is reversed by the rotation of 180 °. After the reversal, the lock pin 22 is inserted into the reversal support frame 11 by the rotation of the handle 23, and the roll segment 160 is prevented from rotating from the horizontal state.

  Then, when the work is finished and the roll segment 160 is removed, an operation reverse to that at the time of attachment is performed. First, the auxiliary handle 38 provided on the long side portion 11b of the reverse support frame 11 is turned to release the restraint from the lateral direction on the roll segment 160. Then, the upper clamping handle 36 of the pair of upper and lower trunnion gripping frames 31 is turned to raise the gripping block 35 and slide so as to overlap the short side portion 11a of the inverted support frame 11 as shown in FIG. As a result, the roll segment 160 whose upper restraint has been released is lifted by the overhead crane by placing a wire on the trunnions 165 and 166, and is taken out of the reverse support frame 11 and transported.

  Therefore, according to the roll segment reversal support device 1 of the present embodiment, the trunnions 165 and 166 of the roll segment 160 are held by the rod-shaped gripping block 35, and thus are not limited by the position or number of trunnions. . Further, since the grip block 35 can be positioned in the vertical direction with respect to the trunnion grip frame 31, it is not limited by the size of the trunnion. Therefore, it is possible to provide a roll segment reversal support device in which the target roll segment is not limited by the trunnion mounting position or the like.

  Moreover, since the reverse support frame 11 has a frame shape that matches the shape of the segment frame 161, the roll segment reverse support device 1 can be widely released in the vertical direction of the roll segment 160 to ensure a sufficient work space. . And since it is the structure which rotated the inversion support frame 11 hold | maintained so that the roll segment 160 was enclosed, a rotation part is not too large compared with a roll segment like a prior art example. Furthermore, since the auxiliary handle 38 is used in addition to the grip block 35 and the segment frame 161 is constrained to be inverted together with the inverted support frame 11, the roll segment 160 can be safely inverted.

As mentioned above, although one Embodiment was described about the roll segment inversion support apparatus of this invention, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning.
In the above-described embodiment, the description has been given on the case where two types of trunnions 165 and 166 are formed on both ends of the segment frame 161 in the longitudinal direction. However, one or three or more trunnions may be provided on one end.
In the above-described embodiment, the motor 17 with a speed reducer has been described as an example of the rotating unit. However, as in the roll segment reverse support device 1, the reverse support frame 11 and the held roll segment 160 are balanced. Therefore, the reversal support frame 11 may be rotated by manually rotating the handle via the reduction gear.

It is the top view which showed one Embodiment of the roll segment inversion support apparatus which supported the roll segment. It is the side view of the partial cross section which showed one Embodiment of the roll segment inversion support apparatus which supported the roll segment. It is the figure which showed the AA cross section of the roll segment inversion apparatus shown in FIG. It is the figure which showed the trunnion holding part of the roll segment inversion support apparatus. It is the top view which showed the work bench assembled around the roll segment inversion support apparatus. It is the side view which showed the work bench assembled around the roll segment inversion support apparatus. It is the figure which simplified and showed the continuous casting machine. It is the side view which showed the conventional roll segment inversion support apparatus. It is the figure which showed the rotation part of the conventional roll segment inversion support apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roll segment inversion support apparatus 11 Inversion support frame 11a Short side part 11b Long side part 12 Rotating shaft 13 Bearing 17 Motor with reduction gear 22 Lock pin 31 Trunnion grip frame 32 Rail 33 Slider 35 Grasp block 36 Tightening handle 38 Auxiliary handle 39 Spiral Pipe 160 Roll segment 162 Roll 163 Hydraulic cylinder 165, 166 Trunnion

Claims (5)

In a roll segment reversal support device that supports a roll segment constituting a casting line of a continuous casting facility via a trunnion provided in the segment frame and reverses the top and bottom.
A reversal support that has a frame shape that matches the shape of the segment frame, has a rotation axis, and is rotatably supported at a predetermined height;
Rotating means for rotating the reversal support;
A gripping member provided so as to be movable relative to the reversal support, and sandwiching and supporting the trunnion of the segment roll from above and below;
A roll segment reversal support device, comprising: an auxiliary member provided on the reversal support and supporting a segment frame of the roll segment from a lateral direction. In the roll segment inversion support device according to claim 1,
The reversal support is a rectangular frame formed so as to have a planar shape surrounding a rectangular segment frame, and is supported by two rotating shafts projecting from the center of the short side. The roll segment reversing support apparatus is characterized in that the rotating means is a motor with a reduction gear connected to one of the rotating shafts via a rotation transmitting means. In the roll segment reversal support device according to claim 1 or 2,
The gripping member includes a gripping block for sandwiching one or more trunnions formed in a segment frame, a trunnion gripping frame slidably mounted on the reverse support, and the trunnion gripping frame. A roll segment reversing support device comprising positioning means for adjusting the position of the grip block in the vertical direction. In the roll segment inversion support device according to claim 3,
The gripping block and the trunnion gripping frame are provided so as to overlap in the vertical direction, and the gripping block is formed so as to enter between the trunnion gripping frame and the reverse support at a position where the trunnion gripping frame overlaps the reverse support. A roll segment reversing support device, characterized in that In the roll segment reversal support device according to any one of claims 1 to 4,
A roll segment reversal support device comprising a lock means for preventing the reversal support from rotating in a horizontal state.

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