JP2015105184A - Steel plate suspender and method of suspending steel plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steel plate suspender enabling a steel plate to be suspended (held) in an inclined posture without incurring a deterioration in product yield and productivity of the steel plate even if the steel plate is long.SOLUTION: The steel plate suspender comprises a hook 3 having a placement part 31 for a steel plate 5 and a hole 32, and a support shaft 4. The support shaft 4 is fitted into the hole 32. A posture holding part 32a in which the support shaft 4 is fitted so as to fix the posture of the placement part 31 and a rotation center part 32b in which the support shaft 4 is fitted so that the hook 3 can rotate around the support shaft 4 are formed in the hole 32. In a state where the support shaft 4 is fitted in the rotation center part 32b, the placement part 31 is inclined greater than in a state where the support shaft 4 is fitted in the posture holding part 32a.

Description

  The present invention relates to a steel plate hanger that suspends a steel plate in an inclined posture, and a steel plate hanger method using the steel plate hanger.

  Heating of a steel plate is performed by heating the steel plate to a high temperature of, for example, 900 ° C. in a heating furnace and then immersing it in a water bath to cool it. As a method for cooling a steel plate in a water tank, a technique described in Patent Document 1 has been proposed. Patent Document 1 describes a water cooling method in which water is jetted onto both side surfaces of a steel plate by immersing in a vertical direction in water such that the wide surface of the steel plate becomes a side surface. By this water cooling method, bubbles generated on the wide surface of the steel sheet are removed to achieve rapid and uniform cooling of the steel sheet.

  In order to effectively remove bubbles generated when a high-temperature steel sheet is immersed in a water tank, it is necessary to put the steel sheet into the water tank in an inclined posture (including a vertically suspended posture as in Patent Document 1). As an apparatus for putting a steel plate into a water tank, the technique of Patent Document 2 is proposed. In Patent Document 2, a horizontally extending suspension beam that is suspended by a crane, two arms that are supported by the suspension beam so as to be horizontally movable, and the two arms are moved in opposite directions to each other. An arm moving mechanism that opens and closes an interval, and the two arms are described as steel plate suspensions having suspension holes that respectively engage with suspension portions formed on both sides of one longitudinal end of the steel plate. ing. With this steel plate hanger, it is possible to place the steel plate into the water tank in a vertically suspended posture with the hanging hole engaged with the hanging portion.

JP 2006-199992 A JP 2013-100180 A

  When the steel plate hanger described in Patent Document 2 is used, it is necessary to form a hanging portion that engages with the hanging hole at the end of the steel plate. Since this hanging part cannot be used as a product, it is necessary to cut out and use only the remaining part as a product. Therefore, the product yield is deteriorated. Moreover, when a steel plate is long, there exists a possibility that a steel plate may deform | transform with dead weight at the time of lifting and suspension. When the steel plate is deformed, it is necessary to return the deformed portion to the original state, which takes time and deteriorates productivity.

  The present invention has been made in view of the above circumstances, and its object is to suspend (hold) a steel sheet in an inclined posture without deteriorating product yield and productivity even if the steel sheet is long. It is providing the steel plate hanging tool and steel plate hanging method which enable this.

The gist of the present invention for solving the above problems is as follows.
(1) A steel plate suspension provided with a hook having a steel plate placement portion and a hole and a support shaft, and the support shaft is fitted in the hole and maintains the posture of the placement portion. The hole is formed with a posture holding portion into which the support shaft is fitted, and a rotation center portion into which the support shaft is fitted so that the hook can rotate around the support shaft. The steel plate hanging tool characterized in that, in a state where the support shaft is fitted in the rotation center portion, the mounting portion is inclined as compared with the posture state.
(2) A method for suspending a steel plate using the steel plate suspending device according to (1) above, wherein the support shaft is fitted into the posture holding portion to maintain the posture of the placement portion, and the placement portion is After the steel plate is placed, the steel plate hanger is raised and the steel plate is held by the steel plate hanger, the steel plate hanger is lowered and the steel plate is placed on the table, and the support shaft is in the posture. Separate from the holding part, fit the support shaft to the center of rotation and then raise the steel plate suspension, rotate the hook around the support shaft, and hook it on the support shaft. A steel plate suspending method, wherein the steel plate placed is placed on the placement portion, the placement portion is inclined with respect to the posture, and the steel plate is suspended in an inclined state.

  According to the present invention, even a long steel sheet can be suspended (held) in an inclined posture without causing deformation of the steel sheet by its own weight and without deteriorating product yield and productivity.

It is a front view which shows the steel plate hanging tool which concerns on an example of 1st Embodiment. It is a side view which shows the steel plate hanging tool shown in FIG. It is explanatory drawing which shows the procedure which makes a steel plate the attitude | position inclined using the steel plate hanging tool shown in FIG. It is a front view which shows the steel plate hanging tool which concerns on an example of 2nd Embodiment.

<First Embodiment>
An example of the first embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view showing a steel plate hanger according to an example of the first embodiment. The steel plate hanging tool 1 includes a device main body 2, a hook 3, and a support shaft 4 on which the hook 3 can be hooked. The support shaft 4 is attached to the device main body 2 via a support shaft holding portion 21. Yes. The apparatus main body 2 has a rectangular parallelepiped shape, and the apparatus main body 2 is provided with a plurality of support shaft holding portions 21 with a predetermined interval along the longitudinal direction of the rectangular parallelepiped. Although not shown, the single support shaft 4 passes through the through-hole formed in the entire support shaft holding portion 21, and the support shaft 4 is held by the support shaft holding portion 21. A plurality of hooks 3 are hooked on the support shaft 4, and the steel plate 5 is placed on the placement portion 31 of the hook 3.

  In a building in a steelworks or the like, a crane traveling rail is provided at the top of the building, and a traveling device / mechanism that travels on the rail is provided. The traveling device / mechanism includes a steel plate suspension 1 (device main body). 2) is attached. The traveling device / mechanism can also move the steel plate suspension 1 up and down. The steel plate 5 placed on the placement portion 31 of the steel plate hanger 1 is transported by the traveling device / mechanism. The building is provided with a later-described steel plate base 6 (see FIG. 3A) on which the steel plate 5 is placed, and a water tank (not shown). The steel plate 5 placed on the steel plate base 6 is held by the steel plate hanger 1, conveyed above the water tank, and immersed in the water tank.

  FIG. 2 is a side view showing the steel plate suspension 1 shown in FIG. 1, and (a) shows a state in which the support shaft 4 is fitted in a hole 32 (posture holding portion 32 a) formed in the hook 3. (B) The state which removed the hook 3 from the spindle 4 is shown for convenience of explanation. As shown in FIG. 2, the hook 3 is substantially C-shaped when viewed from the side of the steel plate suspension 1, and has a placement portion 31 and a hole 32. The lower portion of the C shape is a substantially linear mounting portion 31 on which the steel plate 5 can be mounted, and a hole 32 is formed in the upper portion of the C shape. The hole 32 is substantially L-shaped. At the upper part of the L-shaped vertical portion, a posture holding portion 32a having a shape capable of fitting the support shaft 4 is formed, and at the right end of the L-shaped horizontal portion, the support shaft 4 can be fitted. A rotation center portion 32b having a shape is formed, and the support shaft 4 is movable between the posture holding portion 32a and the rotation center portion 32b. In addition, it is preferable that the attitude | position holding | maintenance part 32a is located right above the gravity center of the hook 3. FIG.

  With reference to FIG.1 and FIG.2, the mechanism in which the spindle 4 fits in the attitude | position holding | maintenance part 32a, and hold | maintains the attitude | position of the hook 3 (mounting part 31) is demonstrated. An anti-rotation pin 33 protruding from the hook 3 is provided on the upper portion of the posture holding portion 32a. In FIG. 1, the rotation prevention pins 33 protrude from the respective hooks 3 from the left to the right of the paper surface. In FIG. 2B, as shown by the dotted lines, the rotation prevention pins 33 are prevented from rotating toward the back of the paper surface. The pin 33 protrudes. When the support shaft 4 is fitted into the posture holding portion 32a, the portion of the support shaft holding portion 21 that faces the rotation prevention pin 33 has a depth that allows the rotation prevention pin 33 to be fitted. A substantially anti-L-shaped rotation prevention pin receiving groove 22 is formed.

  In FIG. 1, the hook 3 and the support shaft holding portion 21 are separated from each other, but the apparatus main body 2 provided with the support shaft holding portion 21 is movable in the left-right direction on the paper surface, and the hook 3 is connected to the support shaft holding portion. 21 may be in contact. When the steel plate 5 is held (suspended) by using the steel plate hanger 1, the apparatus main body 2 is moved, for example, the hook 3 placed on the foundation or the base of a stationary building is supported on the support shaft. The part 21 is brought into contact with the unit 21. When the hook 3 is brought into contact with the support shaft holding portion 21 and the support shaft 4 is fitted into the posture holding portion 32 a, the rotation prevention pin 33 is fitted into the rotation prevention pin receiving groove 22. When the apparatus main body 2 is raised in this state, the hook 3 is hooked on the support shaft 4 (apparatus main body 2). When the hook 3 is hooked, the load of the hook 3 is applied to the support shaft 4 and the rotation prevention pin 33 is fitted in the rotation prevention pin receiving groove 22, so that the hook 3 becomes immovable with respect to the support shaft 4, The posture of the hook 3 (mounting portion 31) is held substantially horizontal. If the posture of the mounting portion 31 is maintained, it is easy to place the steel plate 5 on the mounting portion 31 through the C-shaped opening by moving the device body 2 to move the hook 3. It is possible to suspend and transport the steel plate 5 in the held posture.

  Next, with reference to FIG. 3, the procedure for making the steel plate 5 into an inclined posture using the steel plate hanger 1 will be described. FIG. 3A shows a state in which the support shaft 4 is fitted in the posture holding portion 32 a, and the support shaft 4 (device main body 2) is lowered to attach the steel plate 5 to the base metal 7 provided on the steel plate base 6. Is shown. FIG. 3B shows a state where the support shaft 4 is further lowered from the state shown in FIG. When the support shaft 4 (apparatus body 2) fitted in the posture holding portion 32a is lowered, the support shaft 4 moves away from the posture holding portion 32a and comes into contact with the lower end of the hole 32, and the hook 3 is placed on the steel plate base 6. Is done.

  FIG. 3C shows a state in which the support shaft 4 is fitted in the rotation center portion 32b. If the support shaft 4 is moved horizontally along the hole 32 from the state shown in FIG. 3B, the support shaft 4 is fitted into the rotation center portion 32b. As shown in FIG. 2 (b), the rotation prevention pin receiving groove 22 has an inverted L-shape, and when the support shaft 4 moves horizontally along the hole 32, the rotation prevention pin 33 has an inverted L-shaped lateral shape. Pass through the part and leave the anti-rotation pin receiving groove 22. As a result, the support shaft 4 is not restricted by the hook 3. The support shaft 4 is slidable with the rotation center portion 32b while being fitted to the rotation center portion 32b. Therefore, the hook 3 is rotatable about the support shaft 4.

  In the steel plate suspension 1, when the anti-rotation pin 33 is fitted into the anti-rotation pin receiving groove 22 or removed from the anti-rotation pin receiving groove 22, the support shaft 4 (device main body 2) is shown in FIG. By moving in the left-right direction, the support shaft 4 can be moved from the posture holding part 32a to the rotation center part 32b or in the opposite direction.

  FIG. 3D shows a state in which the placement unit 31 is inclined. When the support shaft 4 (apparatus body 2) is raised in the state shown in FIG. 3C, the mounting portion 31 is inclined and comes into contact with the steel plate 5 as compared with the posture in the state shown in FIG. The steel plate 5 is placed on the placement portion 31. Further, when the support shaft 4 is raised, the hook 3 rotates around the support shaft 4 fitted in the rotation center portion 32b in a state where the steel plate 5 is supported by the inclined mounting portion 31 and the mounting portion 31 is mounted. In a state where the portion 31 is inclined, the hook 3 is suspended (hangs) on the support shaft 4 (device main body 2). That is, in a state where the support shaft 4 is fitted in the rotation center portion 32b and the hook 3 is hooked on the support shaft 4, the support shaft 4 is fitted in the posture holding portion 32a and is held. The mounting part 31 is inclined.

  When the support shaft 4 (apparatus body 2) on which the hook 3 having a posture as shown in FIG. 3D is hooked is lowered, the steel plate 5 can be immersed in a water tank (not shown) in an inclined posture.

  In the steel plate hanger 1 of the said form, since the steel plate 5 is suspended (held) and conveyed by the hook 3, it is not necessary to process a part of the steel plate 5 into a shape that engages with a part of the steel plate hanger, All of the steel plate 5 can be used as a product, and a part of the steel plate 5 is not subjected to its own weight and part of the steel plate 5 is not deformed. Therefore, the product yield due to the suspension of the steel plate suspension does not deteriorate.

Second Embodiment
FIG. 4 is a front view showing a steel plate hanger according to an example of the second embodiment. About the same structure as the steel plate hanging tool 1 of an example of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. The steel plate hanger 101 includes an apparatus main body 102, a hook 3, and a support shaft 104. The apparatus main body 102 has a rectangular parallelepiped shape like the apparatus main body 2, and the apparatus main body 102 is provided with a plurality of support shaft holding portions 121 with a predetermined interval along the longitudinal direction of the rectangular parallelepiped. Then, the two support shaft holding parts 121 constitute one set, and one support shaft 104 is held between the two support shaft holding parts 121 constituting the set. One support shaft 104 passes through the hole 32 (see FIG. 2A) of one hook 3, and one hook 3 is hooked on one support shaft 4. Although not shown in FIG. 4, the rotation prevention pin 33 is fitted in the rotation prevention pin receiving groove 22 in a state where the support shaft 104 is fitted in the posture holding portion 32 a.

  When one hook 3 is replaced with a new one by the steel plate hanging tool 1, one supporting shaft 4 is removed from all the supporting shaft holding portions 21 and the hooks 3, and the hook 3 to be replaced is replaced with a new one. Therefore, it is necessary to pass one supporting shaft 4 through the holes 32 of all the hooks 3 and the through holes of all the supporting shafts 104 again. On the other hand, in the steel plate suspension 101, the hook 3 can be renewed by removing the support shaft 4 held by the set of support shaft holding portions 121 to which the hook 3 to be replaced is attached. . In addition, the steel plate suspension 1 in 1st Embodiment has an advantage rather than the steel plate suspension 101 in 2nd Embodiment by the point that the supporting shaft 4 is sufficient and there are few parts.

  The procedure described with reference to FIG. 3 can be applied to the steel plate suspension 101 to suspend (hold) the steel plate 5 similarly to the steel plate suspension 1, and the steel plate 5 can be immersed in the water tank in an inclined posture. . Further, when the steel plate 5 is transported using the steel plate hanger 101, as in the case of the steel plate hanger 1, since the steel plate 5 is held by the hook 3, a part of the steel plate 5 is part of the steel plate hanger. Therefore, it is not necessary to process the steel plate 5 into a product part, and the steel plate 5 is not deformed.

  In the first and second embodiments, when the support shaft 4 is fitted in the posture holding portion 32a by the mechanism in which the rotation prevention pin 33 is fitted in the rotation prevention pin receiving groove 22, the posture of the mounting portion 31 is held. In the present invention, not limited to this mechanism, it is only necessary that the posture of the mounting portion 31 is held when the support shaft 4 is fitted into the posture holding portion 32a. For example, the support shaft 4 attached to the support shaft holding portion 21 so as not to rotate is provided with a protrusion that can be protruded and retracted in the vertical direction, and a groove in which the protrusion can be fitted is formed in the posture holding portion 32a. In addition, when the support shaft 4 is fitted into the posture holding portion 32 a, if the projecting portion that has been retracted is protruded and inserted into the groove, the operation of the hook 3 is restricted to the support shaft 4, and the mounting portion 31. Posture is maintained. If the protrusion is retracted when the support shaft 4 is separated from the posture holding portion 32a, the support shaft 4 can be moved to the rotation center portion 32b without being restricted by the protrusion and the groove. Become.

  In the first and second embodiments, since the support shaft 4 has a cylindrical shape, both the posture holding portion 32a and the rotation center portion 32b are arcuate, but the support shaft 4, the posture holding portion 32a, and the rotation center portion are both. The shape of the shaft 32b is not specified in this form, and the support shaft 4 can be fitted into the posture holding portion 32a and the rotation center portion 32b, and the support shaft 4 and the posture can be moved as long as the hole 32 can be moved. The holding portion 32a and the rotation center portion 32b may have any shape.

  Moreover, it is desirable that the degree of inclination of the steel plate 5 be matched to the size and depth of the water tank. The inclination of the mounting portion 31 (steel plate 5) is determined by the mass of the steel plate 5 suspended (held) by the hook 3 and the positional relationship between the center of gravity of the steel plate 5 and the hook 3 and the rotation center portion 32b. Therefore, it is desirable to determine the shape and position of the hook 3 and the hole 32 in consideration of the width and depth of the water tank and the mass of the steel plate 5.

1 Steel plate hanging tool (first embodiment)
2 Device body (first embodiment)
3 hook 4 support shaft (first embodiment)
5 Steel plate 6 Steel plate base 7 Base metal 21 Support shaft holder (first embodiment)
22 rotation prevention pin receiving groove 31 placement part 32 hole 32a posture holding part 32b rotation center part 33 rotation prevention pin 101 steel plate suspension (second embodiment)
102 Device Main Body (Second Embodiment)
104 Support shaft (second embodiment)
121 Supporting shaft holding part (second embodiment)

Claims (2)

A hook having a mounting part and a hole for a steel plate, and a support shaft,
The spindle is fitted in the hole;
A posture holding portion where the support shaft is fitted so as to hold the posture of the mounting portion, and a rotation center portion where the support shaft is fitted so that the hook can be rotated around the support shaft. Formed in the hole,
In the state where the support shaft is fitted in the rotation center part, the mounting portion is inclined more than the state of the posture. A method of suspending a steel plate using the steel plate suspending tool according to claim 1,
The support shaft is fitted to the posture holding portion to maintain the posture of the placing portion, and after placing the steel plate on the placement portion, the steel plate suspension is raised and the steel plate is held by the steel plate suspension. ,
Lowering the steel plate hanging tool and placing the steel plate on a table, separating the support shaft from the posture holding portion,
The steel shaft hanger is raised after fitting the support shaft to the rotation center portion, and the hook is rotated around the support shaft, and is hooked on the support shaft,
A steel plate suspension characterized in that the steel plate placed on the table is placed on the placement portion, and the placement portion is inclined with respect to the posture, and the steel plate is suspended in an inclined state. Below method.

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