JP7056589B2 - C hook hanger and transportation method using this - Google Patents

Description

The present invention relates to a C-hook hanger that is lifted by a hook when transporting an object to be transported such as steel materials of various scales, and a transport method using the C-hook hanger.

When quenching a thick steel plate (or a thick plate), the thick plate material is transported to a quenching water tank and immersed. At this time, a method of lifting the thick plate material from one end side and transporting it to the quenching water tank has been proposed (see, for example, Patent Document 1). Patent Document 1 discloses a method in which a notch is formed on one end side of a steel sheet, and a tool is hooked on the notch to convey the steel sheet. However, in the case of Patent Document 1, a steel plate having a certain length or longer causes warpage, and it is necessary to cut out the steel plate, resulting in a decrease in yield.

Therefore, a C-hook hanger has been proposed in which a long steel plate is placed and conveyed on an arm formed in a C-shape (see, for example, Patent Documents 2 and 3). Patent Document 2 discloses a C-hook hanger in which a balance weight is provided on an upper portion of a main frame in order to adjust the balance. Patent Document 3 discloses a steel plate hanger provided with a posture holding portion including a recess for fitting a support shaft in order to fix the posture of a mounting portion on which a steel material is placed.

Japanese Unexamined Patent Publication No. 2013-100148 Japanese Unexamined Patent Publication No. 9-278347 JP-A-2015-105184

In the case of the hanging tools of Patent Documents 2 and 3, the size of the steel plate that can be balanced is limited. That is, when the size of the steel plate to be conveyed changes, the position of the center of gravity of the entire C-hook hanger on which the steel plate is placed shifts. Therefore, depending on the size of the steel plate, the suspension point due to the hook of the crane in the width direction of the steel plate and the position of the center of gravity may deviate from each other, causing load sway.

An object of the present invention is to provide a C-hook hanger capable of suppressing the occurrence of load sway even when the size of the object to be transported is changed, and a transport method using the C-hook hanger.

The present invention has the following configurations in order to solve these problems.
[1] A C-hook hanger that is lifted by a hook and conveys a long object to be transported.
The hanger body extending in the longitudinal direction of the object to be transported,
A plurality of arms mounted side by side along the longitudinal direction of the object to be transported to the lower portion of the hanger body and provided with a mounting surface extending in the width direction of the object to be transported for mounting the object to be transported. When,
A plurality of hanger pins arranged at different positions in the width direction of the object to be transported, which is the upper part of the hanger body.
A position adjusting member that is detachably attached to each of the arms and adjusts the mounting position of the object to be transported on the arm in the width direction.
C-hook hanger characterized by being equipped with.
[2] The plurality of hanging tool pins are
A reference pin provided at a position where the previously described mounting surface of the arm is kept substantially horizontal in the width direction of the transported object when the object to be transported is hung on a hook in a state where the object to be transported is not mounted.
An adjustment pin provided at a position deviated from the reference pin in the width direction of the object to be transported,
Have,
The position adjusting member is provided so that when the object to be transported is placed on a plurality of the arms, the center of gravity is located below the reference pin or the adjusting pin suspended from the hook. The C-hook hanger according to [1], characterized in that the mounting position in the width direction of the transported object is positioned.
[3] The C-hook hanger according to [1] or [2], wherein each of the plurality of hanger pins is provided at a different height position.
[4] The transport method using the C-hook hanger according to any one of [1] to [3].
The position adjusting member is arranged on the arm according to the size of the object to be transported to be placed on the plurality of arms.
A hook is connected to the hanger pin provided at a position where the previously described mounting surface of the arm is kept substantially horizontal, and the C hook hanger is moved to the lower side of the object to be transported.
Among the plurality of hanger pins, the hanger pin located above the center of gravity when the object to be transported is placed on the plurality of arms is selected, hooked, and transported. A transport method using a C-hook hanger, which is characterized by transporting an object.

According to the present invention, by changing the hanging point by hooks using a plurality of pins and adjusting the mounting position of the object to be transported by using the position adjusting member, the mounting portion is substantially horizontal during transport according to the size of the steel plate. The position of the center of gravity of the entire C-hook hanger on which the object to be transported is placed can be adjusted so as to be. Therefore, it is possible to suppress load sway during transportation regardless of the size of the object to be transported.

It is a perspective view which shows the preferable embodiment of the C hook hanger of this invention. XY plan view and YY plan view showing a preferred embodiment of the C hook hanger of the present invention. It is an XZ plan view which shows the preferable embodiment of the C hook hanger of this invention. It is a schematic diagram which shows the state that the position adjustment member was installed in the mounting part of an arm. It is a schematic diagram which shows an example of a position adjusting member. It is a schematic diagram which shows the operation example of the C hook hanger when the C hook hanger is used for quenching a steel plate. It is a schematic diagram which shows the operation example of the C hook hanger when the C hook hanger is used for quenching a steel plate. It is a schematic diagram which shows the operation example of the C hook hanger when the C hook hanger is used for quenching a steel plate. It is a perspective view which shows another embodiment of the C hook hanging tool of this invention.

Hereinafter, embodiments of the present invention will be described. FIG. 1 is a perspective view showing a preferred embodiment of the C-hook hanger of the present invention, and FIG. 2 is an XY plan view and a YY plan view showing a preferred embodiment of the C-hook hanger of the present invention. FIG. 3 is an XX plan view showing a preferred embodiment of the C-hook hanger of the present invention. The C-hook hanger 1 of FIGS. 1 to 3 is used for transporting, for example, a long thick steel plate having a weight of several tens of tons to a quenching water tank for quenching.

The C hook hanger 1 is a hanger body 10 extending in the longitudinal direction (arrow Y direction) of the object to be transported K, and a hanger point adjusting unit provided on the upper portion 10X of the hanger body 10 and connected to the hook CR of the crane. It has 13 and a plurality of arms 20 attached side by side in the longitudinal direction (arrow Y direction) of the steel plate to the lower part of the hanging tool main body 10.

The hanger body 10 has a connecting beam 11 extending in the longitudinal direction of the steel plate K (arrow Y direction) and a plurality of arm mounting members 12 fixed to the connecting beam 11 and extending in the width direction of the steel plate K (arrow X direction). And have. The plurality of arm mounting members 12 are fixed side by side in the longitudinal direction (arrow Y direction) with respect to the connecting beam 11, for example, at equidistant pitches. In the connecting beam 11, a rib LB is formed at a position extending upward from the center of each arm mounting member 12. As a result, it is possible to secure the strength to withstand the load applied to the connecting beam 11 and the arm mounting member 12 when the object to be transported K is placed on the arm 20.

The plurality of arm mounting members 12 are arranged so as to be symmetrical with respect to the central CL of the connecting beam 11, and each has a bolt hole for detachably mounting the arm 20. The arm 20 is also attached to each arm mounting member 12 so as to be symmetrical with respect to the central CL. As a result, it is possible to balance the longitudinal direction (arrow Y direction) of the hanger body 10 at the time of lifting and suppress the occurrence of load sway.

For example, two suspension point adjustment units 13 are provided at positions symmetrical with respect to the central CL, and each suspension point adjustment unit 13 includes a plurality of suspension pin to which the hook CR of the crane is connected. That is, each hanging point adjusting unit 13 has two support frames 13A extending upward from the upper portion 10X of the hanging tool main body 10, and a reference pin 13X and an adjusting pin 13Y having both ends fixed to the support frame 13A, respectively. .. The adjusting pin 13Y is provided at a height position different from that of the reference pin 13X. This makes it possible to efficiently replace the hook CR between the reference pin 13X and the adjustment pin 13Y.

The reference pin 13X and the adjustment pin 13Y are fixed to the support frame 13A via a shaft joint, respectively. As a result, when the reference pin 13X and the adjustment pin 13Y are misaligned due to aged deterioration or the like, it is possible to suppress the occurrence of load sway or the like by positioning adjustment. Although the case where both the reference pin 13X and the adjustment pin 13Y are attached to one support frame 13A is illustrated, the reference pin 13X and the adjustment pin 13Y may be attached to separate support frames. ..

The reference pin 13X and the adjustment pin 13Y are provided at different positions in the width direction (arrow X direction) of the hanger body 10. The reference pin 13X is located directly above the center of gravity position CG1 of the entire C hook hanger 1. Therefore, when the reference pin 13X is held by the hook CR in a no-load state in which the steel plate K is not placed on the arm 20, the arm 20 is kept horizontal. Further, even when the steel plate K is placed on the arm 20, when the center of gravity position CG1 is located below the reference pin 13X, the arm 20 holds the steel plate K horizontally. Hold.

The adjusting pin 13Y is provided at a position deviated by a distance DL in the horizontal direction (arrow X direction) from the position of the center of gravity of the entire C hook hanger 1 in the horizontal direction (arrow X direction). Therefore, when the adjusting pin 13Y is lifted by the hook CR when the steel plate K is not mounted on the arm 20, the arm 20 is lifted in a state of being inclined upward. On the other hand, as shown in FIG. 3, when the steel plate K having the maximum size that can be conveyed is placed, the center of gravity position CG10 of the entire C hook hanger 1 on which the steel plate K is placed moves to the lower side of the adjustment pin 13Y. do. Then, the steel plate K placed on the arm 20 is lifted while maintaining a horizontal state.

The plurality of arms 20 of FIGS. 1 to 3 are each formed in a C shape, and have a fixing portion 21 attached to the hanger main body 10 and a side wall portion 22 extending downward from the fixing portion 21. It has a mounting portion 23 extending from the side wall portion 22 in the width direction (arrow Y direction) of the steel plate K and on which the steel plate K is placed. Further, the side wall portion 22 is provided with a skid 24 that contacts and positions the steel plate K or the side surface of the position adjusting member 30 described later.

The fixing portion 21 is fixed to the arm mounting member 12 of the hanger body 10 via a fixing member such as a bolt, and a shim can be inserted between the fixing portion 21 and the arm mounting member 12. Further, a balance weight 25 is placed on the fixed portion 21. When the balance needs to be adjusted due to deterioration over time, the balance in the width direction (arrow X direction) and the longitudinal direction (arrow Y direction) of the C hook hanger 1 can be adjusted by inserting a shim or increasing or decreasing the balance weight 25. Can be adjusted.

Here, as described above, either the reference pin 13X or the adjustment pin 13Y can be selected as the suspension point according to the dimensions of the plate thickness and width of the steel plate K. Then, as shown in FIG. 4, when the steel plate K having the maximum plate thickness / width is placed on the arm 20, the adjusting pin 13Y is suspended by the hook CR of the crane, and the arm 20 is moved in the width direction (arrow X). Keep the direction) horizontal. On the other hand, the mounting portion 23 of the arm 20 may not be kept horizontal even if it is suspended by the reference pin 13X or the adjustment pin 13Y. This is because the position of the center of gravity of the entire C hook hanger 1 on which the steel plate K is placed is not located directly below the reference pin 13X or the adjustment pin 13Y, depending on the thickness and width of the steel plate K.

For example, when the width of the steel plate K is small, the position of the center of gravity of the entire C hook hanger 1 on which the steel plate K is placed may be located closer to the side wall portion 22 than the reference pin 13X. Then, regardless of whether the reference pin 13X or the adjustment pin 13Y is used, the mounting portion 23 is tilted in the upward direction. Further, depending on the plate thickness or width of the steel plate K, the position of the center of gravity of the entire C hook hanger 1 on which the steel plate K is placed may be located between the reference pin 13X and the adjustment pin 13Y. At this time, when the reference pin 13X is suspended, the tip end side of the mounting portion 23 is tilted downward, and when the adjusting pin 13Y is suspended, the tip end side of the mounting portion 23 is tilted upward. Therefore, the C hook hanger 1 is detachably attached to each arm 20 and has a position adjusting member 30 that positions the mounting position of the steel plate K on the arm 20 in the width direction (arrow X direction).

FIG. 4 is a schematic view showing a state in which the position adjusting member is installed on the mounting portion of the arm, and FIG. 5 is a schematic view showing an example of the position adjusting member. The position adjusting member 30 of FIGS. 4 and 5 includes, for example, a spacer that adjusts the distance between the side wall portion 22 of the arm 20 and the side end of the steel plate K. The position adjusting member 30 has a spacer main body 31 installed on the mounting portion 23, a locking portion 32 extending downward from the side surface of the spacer main body 31 and locked to the mounting portion 23, and an upper surface of the spacer main body 31. It has a gripping portion 33 for gripping the spacer main body 31. The spacer main body 31 has, for example, a rectangular parallelepiped shape, and has substantially the same depth as the mounting portion 23 and a predetermined width. The locking portion 32 extends downward from the side surface of the spacer main body 31 and is locked on the side surface of the mounting portion 23.

Then, the position adjusting members 30 are arranged in order on the mounting portion 23 from the position where they come into contact with the skid 24. Here, it is possible to calculate in advance at which position on the mounting portion 23 the position of the entire center of gravity is located below the reference pin 13X or the adjustment pin 13Y according to the plate thickness, width, etc. of the steel plate K. .. Then, the position adjusting members 30 are arranged side by side in the width direction (arrow X direction) based on the calculation result according to the plate thickness or width of the steel plate K. As the number of arrangements of the position adjusting members 30 increases, one side end of the steel plate K on the mounting portion 23 moves to the adjusting pin 13Y side, and the center of gravity position also moves to the adjusting pin 13Y side accordingly. ..

In this way, the steel plate placed on the arm 20 so that the position of the center of gravity of the entire C hook hanger 1 on which the steel plate K is placed is located below either the reference pin 13X or the adjustment pin 13Y. The position of K in the width direction is adjusted by using the position adjusting member 30. The steel plate K weighs several tens of tons, whereas the position adjusting member weighs, for example, about 10 to 20 kg. That is, the horizontal balance is not achieved by the weight of the position adjusting member, but by the mounting position of the steel plate K.

6 to 8 are schematic views showing an operation example of the C hook hanger 1 when the C hook hanger 1 is used for quenching a steel plate, and the C hook hanger 1 is shown with reference to FIGS. 6 to 8. An operation example of No. 1 will be described. First, the position adjusting member is arranged on the arm 20 according to the size of the steel plate K placed on the plurality of arms 20. In FIGS. 6 to 8, the case where the position adjusting member 30 is not mounted and the arm 20 is kept horizontal when the adjusting pin 13Y is hung on the hook CR is conveyed.

First, as shown in FIG. 6, the reference pin 13X is lifted by the hook CR, and the C hook hanger 1 is placed on the pedestal 2 for positioning. On the other hand, the steel plate K is heated by a heating furnace and is taken out in a state of being placed on the pillow material 3A on the furnace carriage 3. The height of the positioning pedestal 2 is set to a height at which the mounting portion 23 is located between the furnace trolley 3 and the steel plate K.

The C hook hanger 1 moves to the lower side of the steel material K in a state where the hook CR is connected to the reference pin 13X provided at a position where the mounting surface 23A of the arm 20 is kept substantially horizontal. Then, as shown in FIG. 7, the mounting portion 23 of the arm 20 enters between the steel plate K arranged on the pillow material 3A and the furnace carriage, and the mounting portion 23 is positioned on the lower surface side of the steel plate K. To. In this way, the mounting portion 23 of the arm 20 is inserted between the steel plate K and the furnace carriage 3 while maintaining the horizontal state without tilting.

After that, as shown in FIG. 8, the hook CR is replaced from the reference pin 13X to the adjustment pin 13Y in a state where the mounting portion 23 is positioned on the lower surface of the steel plate K. The adjustment pin 13Y is lifted upward by the hook CR. Then, the entire C hook hanger 1 is lifted upward with the steel plate K mounted on the mounting portion 23. At this time, the adjustment pin 13Y is suspended by the hook CR to maintain the horizontal balance and suppress the occurrence of load sway.

According to the above embodiment, by changing the suspension point by the plurality of pins 13X and 13Y and adding the position adjusting member 30, the mounting portion 23 is substantially horizontal according to the size of the steel plate K when the steel plate K is conveyed. The center of gravity position CG can be adjusted so as to be. Therefore, it is possible to suppress load sway during transportation regardless of the size of the steel sheet.

That is, depending on the size of the steel plate K to be conveyed, the entire center of gravity position CG1 may not be located directly below the reference pin 13X. If the C hook hanger 1 is lifted by the hook CR in such a state where the position of the center of gravity is deviated, it causes turning in the direction of arrow R or swaying of the load. Therefore, in the C hook hanger 1, two hanging points, a reference pin 13X and an adjusting pin 13Y, are provided. Then, not only when the center of gravity is located directly under the reference pin 13X, but also when the center of gravity is located directly under the adjusting pin 13Y, the balance is achieved.

On the other hand, the center of gravity position CG may be located between the reference pin 13X and the adjustment pin 13Y. In this case, regardless of whether the reference pin 13X or the adjustment pin 13Y is used for lifting, the C hook hanger 1 will rotate around the hanging point. Therefore, the position of the steel plate K is adjusted by the position adjusting member 30 so that the position of the center of gravity as a whole is located below the reference pin 13X or the adjusting pin 13Y. That is, the hanging point and the mounting position of the steel plate K are adjusted according to the plate thickness or width of the steel plate K, and the center of gravity position is the reference pin 13X or the adjustment pin even when the steel plates K of various sizes are suspended. It should be located directly under 13Y. In this way, by combining the adjusting pin 13Y and the position adjusting member 30, it is possible to expand the adaptive size of the steel sheet K that can be conveyed by suppressing the occurrence of turning or load sway.

Further, unlike the conventional case, it is not necessary to form a notch for lifting the steel plate K, so that the restriction on the length of the steel plate K can be significantly improved. Furthermore, since it does not have electrical equipment such as a motor drive and is balanced with a suspension point and a spacer with a simple structure, it does not break down even with a high temperature steel plate. Further, since the steel plate K is lifted in the horizontal state by the C hook, the steel plate K of any size does not warp.

At this time, if the dimensions of the steel plate K and the like are known, the work can be started with the position adjusting member 30 attached to the arm 20 in advance. Therefore, when the C hook hanger 1 moves to the mounting position of the steel plate K, if the C hook hanger 1 is lifted by the reference pin 13X, the C hook hanger 1 does not shake and the mounting portion 23 of the arm 20 is substantially horizontal. It can be moved while keeping it in a state. Then, the hook CR is replaced with the adjusting pin 13Y in a state where the arm 20 is located below the steel plate K and one end of the steel plate K is in contact with the position adjusting member 30. After that, the entire C-hook hanger 1 is lifted with the adjusting pin 13Y as a hanging point, so that the steel plate K can be lifted and handled in a balanced state during transportation.

Further, if the reference pin 13X and the adjustment pin 13Y are provided at different height positions, the work can be performed efficiently without interfering with each other when the hook between the reference pin 13X and the adjustment pin 13Y is replaced. It can be performed.

The embodiment of the present invention is not limited to the above embodiment, and various modifications can be made. In the above embodiment, the case where the object to be transported K is a steel plate is illustrated, but it may be something other than the steel plate K such as a long pipe. Further, in the above embodiment, the case where the C hook hanger 1 conveys the thick plate steel material at the time of quenching the steel plate K is illustrated, but the use is not limited to quenching as long as it conveys.

Further, in the suspension point adjustment unit 13 of FIG. 1, the case where the reference pin 13X is arranged higher than the adjustment pin 13Y is illustrated, but as shown in FIG. 9, the adjustment pin 113Y is higher than the reference pin 113X. It may be arranged. Further, as shown in FIG. 9, the reference pin 113X and the adjustment pin 113Y may be supported by separate support frames.

Further, in the above embodiment, the C hook hanger 1 illustrates the case where it has one adjusting pin 13Y, but the present invention is not limited to this, and for example, two or more adjustment pins 13Y may be provided.

Further, the position adjusting member 30 is exemplified in the case where the position adjusting member 30 is composed of spacers arranged in order from the sliding 24 side, but the present invention is not limited to this, and any body that can adjust the position may be used, for example, with the side end of the steel material K. It may be something that is fixed only to the part where it becomes.

1 C hook hanging tool 2 pedestal 3 furnace trolley 3A pillow material 10 hanging tool body 11 connecting beam 12 arm mounting member 13 hanging point adjustment unit 13A support frame 13X reference pin 13Y adjustment pin 20 arm 21 fixing part 22 side wall part 23 mounting part 23A Mounting surface 24 Skid 25 Balance weight 30 Position adjusting member 31 Spacer body 32 Locking part 33 Grip part CG1, CG10 Center of gravity position CL Center CR Hook DL Distance K Transported object (steel plate)
LB rib

Claims (3)

A C-hook hanger that is lifted by a hook and transports a long object to be transported.
The hanger body extending in the longitudinal direction of the object to be transported,
A plurality of arms mounted side by side along the longitudinal direction of the object to be transported to the lower portion of the hanger body and provided with a mounting surface extending in the width direction of the object to be transported for mounting the object to be transported. When,
A plurality of hanger pins arranged at different positions in the width direction of the object to be transported, which is the upper part of the hanger body.
A position adjusting member that is detachably attached to each of the arms and adjusts the mounting position of the object to be transported on the arm in the width direction.
Equipped with
The plurality of hanging tool pins are
A reference pin provided at a position where the previously described mounting surface of the arm is kept substantially horizontal in the width direction of the transported object when the object to be transported is hung on a hook in a state where the object to be transported is not mounted.
An adjustment pin provided at a position deviated from the reference pin in the width direction of the object to be transported,
Have,
The position adjusting member is one side end side of the object to be transported on the arm according to the plate thickness and width of the object to be transported before the object to be transported is placed on the plurality of arms. It determines the position of
The arm has a skid that positions the position adjusting member on the arm.
By increasing or decreasing the number of the position adjusting members arranged in order from the position in contact with the skid on the arm, the position adjusting member is placed on the plurality of arms when the object to be transported is placed on the plurality of arms. A C-hook hanger characterized in that the mounting position in the width direction of the object to be transported is positioned so that the center of gravity is located below the reference pin or the adjusting pin suspended from the hook. The C-hook hanger according to claim 1, wherein each of the plurality of hanger pins is provided at a different height position. A transport method using the C-hook hanger according to claim 1 or 2.
The position adjusting member is arranged on the arm according to the size of the object to be transported to be placed on the plurality of arms.
A hook is connected to the hanger pin provided at a position where the previously described mounting surface of the arm is kept substantially horizontal, and the C hook hanger is moved to the lower side of the object to be transported.
Among the plurality of hanger pins, the hanger pin located above the center of gravity when the object to be transported is placed on the plurality of arms is selected, hooked, and transported. A transport method using a C-hook hanger, which is characterized by transporting an object.

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