JP5281343B2 - Cooling floor carry-in device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the timing of the start of the sliding of steel bars uniform in the longitudinal direction. <P>SOLUTION: A carrying-in device 1 of a cooling bed is provided with a lifter 11 for lifting a long-size material 2 and a slide inclined part 12 on which the long-size material 2 from the lifter 11 is slid to the cooling bed 6. The slide inclined part 12 is divided into a plurality of zones 36 in the longitudinal direction and provided with an ascending and descending means 22 for individually ascending and descending the slide inclined part 12 of each zone 36 and an adjusting means 33 for adjusting means 33 for adjusting the height of the slide inclined part 12 to the lifter 11. Further, it is preferable that the adjusting means 33 is provided with detecting means 34 for detecting the height difference between the lifter 11 and the slide inclined base 21, and a control part 35 for adjusting the amount of ascent and descent of the lifting means 22 on the basis of the output from the detecting means 34. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a cooling bed carrying-in apparatus used when strips finish-rolled in rolling equipment are taken into a cooling bed.

The conventional cooling floor carry-in apparatus has a mechanism in which the steel strip finished and rolled by a rolling facility is transported to a lifter by a transport roller table, and the steel strip is lifted by the lifter and delivered to the cooling floor. Between the lifter and the cooling bed, there is a sliding slope part inclined toward the cooling bed side, and this sliding slope part is provided at a position higher than the cooling bed. The lifter is also inclined toward the cooling floor, and when the lifter rises to the same level as the slip inclined portion, the steel bar placed on the lifter slides to the cooling floor via the slip inclined portion and is discharged. .
By the way, a preferable angle of the tilt angle of the lifter varies depending on the type of the strip. For example, when the steel bar is an angle, if the inclination angle is increased, the steel bar may fall down when taken in. Therefore, it is preferable that the inclination angle is gentle. On the other hand, when the bar steel is flat steel, a steep slope is desirable because the ground contact area is large and it is difficult to slip. Furthermore, in the case where the bar steel is a thin flat bar, there is a need to perform slow cooling in order to prevent adverse effects on the structure, and it may be stacked on the cooling floor. In this case, the angle of inclination of the lifter varies depending on the number of steps, the width dimension, and the thickness.

In other words, the lifter must adjust the lifting amount according to the type of strip to be paid out. Thus, for example, the lifter of Patent Document 1 employs a mechanism in which a lifter is attached to the distal end of an arm whose base end is pivotally supported, and the lifter moves up and down in an arc shape around the pivot point. And all the lifters connected to the line shaft via the link mechanism are moved up and down all at once by moving the line shaft provided below in the axial direction of the shaft. That is, in the lifter of Patent Document 1, if the movement amount of the line shaft is changed, the lift amount of the lifter is changed and the lifter gradient can be adjusted.
Japanese Patent No. 3941986

However, the steel bar to be dispensed to the cooling floor is at a high temperature, and naturally the heat is transferred from the steel bar to the lifter and the lift mechanism of the lifter. When heat is applied to the lifter lifting mechanism, the link mechanism and the line shaft are stretched. The influence of this thermal elongation is greatly different in the longitudinal direction, and the lift amount of the lifter also varies in the longitudinal direction. This change in the lift amount of the lifter also occurs due to wear over time.
When the lift height of the lifter changes in the longitudinal direction in this way, the lifter has a low lift height even though the lifter has a high lift height, it is flush with the slip slope and the bar slide starts. In the lifter as it is, the lifter does not rise to the same level as the sliding inclined portion, and the sliding of the bar is not started. That is, the start timing of paying out from the lifter is shifted in the longitudinal direction of the steel bar, so that only a part of the slide in the longitudinal direction slides faster, or only a part of the slide remains without sliding.

When such slippage deviation of the bar steel occurs in the longitudinal direction, there is a risk that the bar steel may be surface-scratched, deformed, or hindered in operation.
This invention is made | formed in view of the above-mentioned problem, and it aims at providing the cooling floor carrying-in apparatus which can arrange the timing of sliding-out of a bar steel in a longitudinal direction.

In order to achieve the object, the present invention takes the following technical means.
That is, the cooling floor carry-in device of the present invention is a cooling floor carry-in device comprising a lifter that lifts a long material and a sliding inclined portion that slides the long material from the lifter to the cooling floor,
The slip inclined portion is divided into a plurality of zones in the longitudinal direction, and includes an elevating means for individually raising and lowering the slip inclined portion of each zone, and an adjusting means for adjusting the height of the slip inclined portion with respect to the lifter. It is characterized by this.
In this way, the sliding inclined portion is divided into a plurality of zones in the longitudinal direction, and the lifting / lowering amount can be individually adjusted for each of the divided zones. Therefore, even if the lifting height of the lifter changes in the longitudinal direction, the lifter The amount of sliding of the strip can be adjusted in the longitudinal direction by adjusting the ascending / descending amount of the sliding inclined portion in accordance with the ascending / descending height.

  Further, the adjusting means includes a detecting means for detecting a difference in height between the lifter and the sliding ramp, and a control unit for adjusting a lifting amount of the lifting means by an output from the detecting means. It is also preferred that the zone is provided with one or more sliding ramps. Although it is preferable to provide one slide ramp for each zone because the timing of sliding can be finely adjusted, it is economically preferable to provide a plurality of slide ramps for each zone. Further, the elevating means is provided in one zone via the oscillating shaft, a link mechanism connected to the sliding ramp, a oscillating shaft connecting the link mechanisms in one zone, and the oscillating shaft. It is preferable to include elevating drive means for elevating and lowering the sliding tilt table at a time.

  According to the cooling floor carry-in device of the present invention, the sliding timing of the steel bar can be aligned in the longitudinal direction, and it is possible to suppress the surface steel from being scratched, deformed, or hindered in operation. .

The cooling floor carry-in device 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic view of a rolled material cooling facility 3 provided with a cooling floor carry-in device 1 as viewed from above. As shown in FIG. 1, the cooling facility 3 includes a run-in portion 5 that carries a long material 2 (rolled material) that has been rolled and then cut into a predetermined length in the longitudinal direction by a divided shear 4, and a long A cooling floor 6 for cooling the scale material 2 and a runout portion 7 for accumulating and transferring the long material 2 cooled by the cooling floor 6 and carrying it out to the next process are provided. The long material 2 carried out from the runout portion 7 is cut into a predetermined length by a cold shear 8 provided on the downstream side of the runout portion 7. The cooling facility 3 is provided with a cooling floor carry-in device 1 for carrying the long material 2 into the cooling floor 6 between the run-in portion 5 and the cooling floor 6.

In the following description, the longitudinal direction of the long material 2 placed on the run-in portion 5 is defined as the longitudinal direction when the cooling floor carry-in device 1 is described. Moreover, let the direction which goes to the run-in part 5 from the division | segmentation shear 4 in FIG. 1 be the front at the time of explaining the cooling bed carrying-in apparatus 1, and let the direction which goes to the cold shear 8 from the run-out part 7 be back.
The long material 2 is rolled as flat steel or angle steel, and is cut into a length suitable for cooling by the divided shear 4, that is, a length that can be placed without protruding onto the cooling floor 6, and the run-in portion 5. Sent to.

The run-in portion 5 is formed long along the carrying-in direction (longitudinal direction) of the long material 2 and is provided on the side of the cooling floor 6. The run-in section 5 has a plurality of transport rollers 9 that are rotatable along the longitudinal direction, and can transport the long material 2 that has come out of the divided shear 4. The long material 2 carried into the run-in part 5 is carried out to the cooling bed 6 by the cooling bed carrying-in device 1.
The cooling floor 6 is a part that stabilizes the shape by cooling while removing the bending from the long material 2 in a high temperature state, and is disposed so as to be substantially parallel to the run-in portion 5 and separated in the width direction of the long material 2. Has been. The cooling floor 6 is provided with a plurality of grooves 10 extending along the longitudinal direction on the upper surface side so that the long material 2 can be placed, and the plurality of grooves 10 are arranged along the width direction of the long material 2. . The cooling bed 6 is provided with a moving means (not shown) for sequentially moving the long material 2 from the groove 10 to the groove 10. The long material 2 is gradually moved from the groove 10 to the groove 10. It can be cooled down. The long material 2 cooled by the cooling bed 6 is carried out to the runout part 7, sent from the runout part 7 to the cold shear 8, and cut into a predetermined length.

By the way, since the run-in part 5 is generally formed to be equal to or lower than the cooling bed 6, when the long material 2 is to be carried into the cooling floor 6 from the run-in part 5, the long material 2 has to be lifted once. Therefore, the cooling facility 3 is provided with a cooling floor carry-in device 1 that lifts the long material 2 and moves it in the width direction to carry it into the cooling floor 6.
Next, the cooling bed carrying-in apparatus 1 is demonstrated using FIG.
As shown in FIG. 2, the cooling floor carry-in device 1 is configured to lift the long material 2 to a position higher than the cooling floor 6 and then slide it down to the cooling floor 6. The lifter 11 lifts the long material 2. And a sliding inclined portion 12 for sliding the long material 2 from the lifter 11 to the cooling floor 6.

As shown in FIGS. 2 to 4, the lifter 11 includes a lift floor 13 having a flat upper surface so that the long material 2 can be placed thereon, a floor support portion 14 that supports the lift floor 13 from below, A link portion 15 that raises and lowers the floor support portion 14 and the lift floor 13 and a line shaft 16 that moves the link portion 15 are provided.
The elevating floor 13 is provided between the conveying rollers 9 arranged at a certain interval in the longitudinal direction in the run-in portion 5, and the conveying rollers 9 and the elevating floor 13 are alternately arranged on a straight line along the longitudinal direction. It is deployed to line up. The elevating floor 13 is a box body whose upper surface is inclined downward toward the cooling floor 6 side, and is formed in a substantially U shape in a side view. A rotating arm 37 is provided below the elevating floor 13 so as to protrude toward the cooling floor 6, and the distal end side of the rotating arm 37 on the cooling floor 6 side rotates to the pivot shaft 17. It is freely pivoted. The pivot shaft portion 17 is provided along the longitudinal direction, and the elevating floor 13 is rotatable around the pivot shaft portion 17 along the longitudinal direction.

The floor support portion 14 is a rod body that is formed long so as to straddle the plurality of elevating floors 13 along the longitudinal direction. In the embodiment, three lifting / lowering floors 13 are connected together.
The link portion 15 includes an upper arm 18 connected to the floor support portion 14 and a rotating member 19 that swings the upper arm 18 in accordance with the movement of the line shaft 16 in the front-rear direction. The rotating member 19 is formed in an approximately L shape with the middle side in the vertical direction as a boundary, and is pivotally supported by a pivot pin 20 provided in a direction perpendicular to the longitudinal direction on the middle side. ing. The lower end of the rotating member 19 is rotatably connected to the line shaft 16 and the upper end of the rotating member 19 is rotatably connected to the lower end of the upper arm 18, and the upper end of the upper arm 18 is rotatably connected to the floor support portion 14. Therefore, when the line shaft 16 is moved back and forth, the rotating member 19 is rotated around a direction perpendicular to the longitudinal direction, and the upper shaft is moved up and down, so that the lifting floor 13 is around the pivot shaft portion 17 along the longitudinal direction. To turn.

The line shaft 16 is provided on the floor surface below the floor support portion 14 so as to be connected in the longitudinal direction, and all the link portions 15 provided on the lifter 11 are connected. The line shaft 16 is attached so as to be movable in the front-rear direction, and can be moved in the front-rear direction by a shaft swinging means (not shown).
As shown in FIGS. 2 and 5, the sliding inclined portion 12 includes a sliding inclined base 21 having an inclined surface on the upper surface on which the long material 2 slid from the lifting floor 13 of the lifter 11 can continue to slide, The inclination angle of the inclined surface of the sliding inclination table 21 can be adjusted by using the lifting means 22 according to the inclination angle of the lifter 11.

  The sliding ramp 21 is provided on the side of the lifting floor 13 on the cooling floor 6 side corresponding to the lifting floor 13 of the lifter 11. The sliding ramp 21 is a box formed in a substantially U shape in a side view toward the cooling floor 6, and the upper surface of the sliding ramp 21 is raised when the sliding ramp 21 is raised to the same height as the lift floor 13. It is formed so as to be inclined downward toward the cooling floor 6 so as to have the same inclination angle as the elevating floor 13. Similar to the lifter 11, the sliding ramp 21 includes a swinging arm 23 that protrudes toward the cooling floor 6, and the tip side of the swinging arm 23 on the cooling floor 6 side is the above-described pivot. The pivot 17 is pivotally supported.

The lifting / lowering means 22 includes a swing shaft 24 disposed along the longitudinal direction below the sliding ramp 21. The oscillating shaft 24 is rotatably provided around the oscillating shaft 26 along the longitudinal direction by the bearing portion 25. The oscillating shaft 24 protrudes toward the cooling bed 6 on the outer peripheral surface and is integrated with the oscillating shaft 24. A first arm member 27 and a second arm member 28 are provided.
A connecting arm 29 is provided between the first arm member 27 of the elevating means 22 and the sliding ramp 21. The connecting arm 29 has a lower end side attached to the protruding end of the first arm member 27 and an upper end side rotatably attached to the lower end of the slide tilt base 21, so that the slide tilt base 21 is synchronized with the swing of the first arm member 27. Can be moved up and down.

A screw jack 30 is connected to the protruding end of the second arm member 28 of the elevating means 22. The rod of the screw jack 30 can be extended in the vertical direction, and the tip of the rod and the protruding end of the second arm member 28 are connected so as to be swingable. A drive motor 32 is provided on the side of the screw jack 30 (the side away from the cooling floor 6) via a drive shaft 31. By rotating the drive shaft 31 forward and backward by the drive motor 32, the screw jack 30 is provided. The rod can be expanded and contracted.
Therefore, when the drive shaft 31 is rotated in either the forward or reverse direction by the drive motor 32, the rod of the screw jack 30 is extended, and the swing shaft 24 is rotated counterclockwise via the second arm member 28. . When the swinging shaft 24 rotates counterclockwise, the protruding end of the first arm member 27 moves upward along with the swinging shaft 24, and the sliding ramp 21 moves upward via the connecting arm 29, causing the slipping tilt. The inclination angle of the table 21 can be adjusted to be large. On the other hand, when the drive motor 32 is rotated in the reverse direction, the elevating means 22 operates in the reverse direction and the inclination angle of the sliding ramp 21 is adjusted to be reduced.

By the way, the long material 2 after rolling is at a high temperature, and heat is also transmitted to the lifter 11 and the line shaft 16 and the link part 15 that raise and lower the lifter 11, so that the link part 15 and the line shaft 16 are thermally stretched. . Since this thermal elongation differs greatly in the longitudinal direction, the lift of the lifter 11 varies in the longitudinal direction. Further, even if the line shaft 16 and the link portion 15 are worn over time, the lift of the lifter 11 may fluctuate in the longitudinal direction.
When the lift height of the lifter 11 changes in the longitudinal direction in this way, in the cooling equipment 3 in which the slip inclined portion 12 moves up and down at once with one swing shaft 24, the lifter 11 having a high lift height slips. The lifter 11 is not raised to the same level as the sliding inclined portion 12 in the lifter 11 whose elevation height remains low, although the sliding of the long material 2 is started with the inclined portion 12 being flush. The slide of the long material 2 is not started. That is, the start timing of the delivery of the long material 2 from the lifter 11 is shifted in the longitudinal direction, and only a part of the long material 2 in the longitudinal direction slides quickly, resulting in quality defects such as bending and operational problems. It will be.

Therefore, in the cooling floor carry-in device 1 of the present invention, the slip inclined portion 12 is divided into a plurality of zones 36 in the longitudinal direction. The cooling floor carry-in device 1 is provided with lifting / lowering means 22 that individually lifts and lowers the sliding inclined portion 12 of each zone 36 and adjusting means 33 that adjusts the height of the sliding inclined portion 12 with respect to the lifter 11. The height of the sliding inclined portion 12 with respect to the lifter 11 can be adjusted by individually raising and lowering the sliding inclined portion 12 of each zone 36.
That is, in the present invention, the slip inclined portion 12 is divided into a plurality of zones 36 in the longitudinal direction. These zones 36 can be allocated such that each zone 36 includes one or a plurality of sliding ramps 21. In the following embodiment, an example in which each of the zones 36 includes three sliding ramps 21 is illustrated.

As shown in FIG. 6, the elevating means 22 is formed long so that the swing shaft 24 extends over the three sliding ramps 21 in one zone 36. One set of first arm member 27 and one connecting arm 29 are provided on each of the front end side, rear end side, and midway side of the swing shaft 24. Therefore, when the rocking shaft 24 rotates, the three sliding inclined portions 12 in one zone 36 can be moved up and down at the same time as the rocking shaft 24 rotates.
Only one set of the second arm member 28, the screw jack 30, and the drive motor 32 is provided on the middle side of the swinging shaft 24, and the three slide inclined bases 21 are moved once by the drive force of one drive motor 32. Can be moved up and down.

The adjusting means 33 is a control means for detecting the height of the sliding ramp 21 for each zone 36, and a control for operating the elevating means 22 for each zone 36 to change the height detected by the detecting means 34. Part 35.
The detection means 34 is a sensor coupled to the input shaft of the screw jack 30, and detects the height of the sliding ramp 21 for each zone 36 by converting the amount of rotation of the input shaft. The control unit 35 can output a drive command to the drive motor 32. For example, when the slide slope 21 is desired to be raised, the drive motor 32 is rotated forward, and when the slide slope 21 is desired to be lowered, the drive motor 32 is provided. Are reversed so that the sliding inclined portion 12 of each zone 36 can be lifted and lowered by a predetermined lift amount. Therefore, if the adjusting means 33 is used, the height difference between the sliding ramp 21 and the lifter 11 can be adjusted by raising and lowering the height of the sliding ramp 21 for each zone 36.

Next, operation | movement of the cooling floor carrying-in apparatus 1 in case the elongate material 2 is angle steel is demonstrated.
First, when the long material 2 is an angle steel, the long material 2 is carried into the run-in portion 5 with the bent portion of the angle steel facing upward and is lifted by the lifter 11.
That is, as shown in FIG. 4, when the line shaft 16 is moved backward (opposite to the arrow in FIG. 4), the rotating member 19 of the link portion 15 rotates clockwise, and the upper arm 18 and the upper The floor support 14 connected to the arm 18 is raised. As a result, the elevating floor 13 rotates around the pivot shaft portion 17, the inclination angle of the upper surface of the elevating floor 13 is increased, and the long material 2 is easily slid out. Further, when the line shaft 16 is moved forward (in the direction of the arrow in FIG. 4), the floor support portion 14 is moved downward as the link portion 15 is moved backward, and the inclination angle of the upper surface of the lift floor 13 is lowered. Becomes smaller and the long material 2 becomes difficult to slide out.

At this time, if the inclination angle of the lifter 11 is too large, the long material 2 may be overturned during the sliding and fall down, resulting in cooling problems. An inclination angle of about 22 ° is set. As for the slip inclined portion 12, if the height of the slip inclined portion 12 is higher than the height of the lifter 11 at the time of ascent, a step is generated between the lifter 11 and the slip inclined base 21, causing a fall. The sliding inclined portion 12 is adjusted to a height lower than the height of the upper surface of the lifter 11 so that the scale material 2 can be prevented from falling.
When a large number of long materials 2 are successively carried in using the cooling floor carry-in device 1, the heat of the long materials 2 is eventually transmitted to the lifter 11 and thermal expansion occurs in the line shaft 16 and the upper arm 18. As a result, the height when the lift floor 13 is raised at the front side and the rear side in the longitudinal direction of the lifter 11 deviates from the set height, and the height of the lift floor 13 becomes higher or lower than the set height. To do.

In such a case, the operator determines the level of the sliding ramp 21 by observing the sliding state of the long material 2, and drives the height of the sliding ramp 21 detected by the detecting means 34 so as to match this level. A command is sent from the control unit 35 to the drive motor 32. Then, the height of the sliding ramp 21 in each zone 36 is adjusted by the drive motor 32, and the difference in height between the height of the lift floor 13 and the sliding ramp 21 becomes equal in the longitudinal direction, and The sliding start timing is aligned in the longitudinal direction.
Therefore, in the cooling floor carry-in device 1 of the present invention, even if a difference occurs in the height of the lifter 11 in the longitudinal direction due to the influence of thermal elongation, the difference in height between the slip inclined portion 12 and the lifter 11 is observed in the longitudinal direction. It can be corrected to the same level, and the sliding timing of the long material 2 can be made uniform in the longitudinal direction. As a result, the sliding timing of the long material 2 is shifted in the longitudinal direction, thereby causing surface scratches, deformation, etc., and operation interruptions due to mistakes in taking in the long material 2 are suppressed.

The present invention is not limited to the above-described embodiments, and the shape, structure, material, combination, and the like of each member can be appropriately changed without changing the essence of the invention.
In the said embodiment, the case where the elongate material 2 was angle steel was illustrated and demonstrated. However, the long material 2 can be a rolled material 2 having a flat steel or other cross-sectional shape.
In the above embodiment, the lifter 11 has been described as being lifted and lowered by one line shaft 16 at a time. However, the lifter 11 does not have to use the line shaft 16 as long as all the lift floors 13 are moved up and down at once.

In the above embodiment, an example in which the three slopes 21 are provided in each zone 36 is illustrated. However, each zone 36 may be composed of one sliding ramp 21 or may be composed of two or four or more sliding ramps 21.
In the said embodiment, what lifted / lowered the slide inclined base 21 using the screw jack was illustrated. However, the lifting mechanism of the sliding inclined portion 12 may be one that lifts and lowers the sliding inclined base 21 using means such as a hydraulic cylinder.
In the above-described embodiment, the method in which the operator confirms the sliding timing of the long material 2 and sends a drive command from the control unit 35 to the drive motor 32 is exemplified. However, when the level difference between the lifter 11 and the sliding ramp 21 due to thermal elongation can be measured, the operation performed by the operator can be automatically performed by the control unit 35.

It is a plane layout figure of the cooling installation provided with the cooling floor carrying-in apparatus of this invention. It is sectional drawing of a cooling floor carrying-in apparatus. It is a front view of the raising / lowering mechanism of a lifter. It is an enlarged view of the raising / lowering mechanism of a lifter. It is a front view of the raising / lowering means of a sliding inclination part. It is explanatory drawing of the raising / lowering means of a sliding inclination part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cooling floor carrying-in apparatus 2 Rolled material 3 Cooling equipment 4 Divided shear 5 Run-in part 6 Cooling floor 7 Run-out part 8 Cold shear 9 Conveying roller 10 Groove 11 Lifter 12 Slip inclined part 13 Lifting floor 14 Floor support part 15 Link part 16 Line shaft Reference Signs List 17 pivot shaft 18 upper arm 19 pivoting member 20 pivot pin 21 sliding ramp 22 lifting means 23 rocking arm 24 rocking shaft 25 bearing 26 rocking shaft 27 first arm member 28 second arm member 29 connection Arm 30 Screw jack 31 Drive shaft 32 Drive motor 33 Adjustment means 34 Detection means 35 Control section 36 Zone 37 Rotating arm

Claims (4)

A cooling floor carry-in device comprising a lifter that lifts a long material, and a sliding slope that slides the long material from the lifter to the cooling floor,
The slip inclined portion is divided into a plurality of zones in the longitudinal direction, and includes an elevating means for individually raising and lowering the slip inclined portion of each zone, and an adjusting means for adjusting the height of the slip inclined portion with respect to the lifter. The cooling floor carrying-in apparatus characterized by the above-mentioned.   The adjusting unit includes a detecting unit that detects a difference in height between the lifter and the sliding ramp, and a control unit that adjusts a lifting amount of the lifting unit based on an output from the detecting unit. The cooling floor carry-in device according to claim 1.   The cooling floor carry-in apparatus according to claim 1 or 2, wherein one or a plurality of sliding ramps are provided in the zone.   The elevating means includes a link mechanism connected to the sliding ramp, a swinging shaft for connecting the link mechanisms in one zone, and a sliding tilt provided in one zone via the swinging shaft. The cooling floor carrying-in apparatus according to any one of claims 1 to 3, further comprising elevating drive means for elevating and lowering the table at a time.

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