JP6748516B2 - Cargo handling equipment - Google Patents

Description

The present invention relates to a cargo handling device for lifting and transporting long steel materials.

When a long steel such as a long rail that is long in one direction is hoisted and transported by a crane, it is common to suspend the beam with a crane and hold the long steel with a plurality of hoists attached to the beam. .. For example, in Patent Document 1, a frame (beam) having a suspension point at the center and having a length corresponding to a long link (long steel material), and a frame disposed on the frame and opened and closed in the width direction of the frame By doing so, a technique of a long link suspending tool including a plurality of pairs of arms (suspension tools) supporting the long link from the lower surface is disclosed. In addition, the same long link suspension includes a guide member that adjusts the positions of the frame and the long link in the width direction by hanging from the vicinity of both ends of the frame in the width direction and sandwiching the long link.

JP, 2014-73898, A

The rails shipped from the factory of the manufacturer are welded at the factory of the railway company and then laid on the tracks. However, in order to reduce the welding work of the rails, it is required to ship long rails over 50 m. However, it has been found that the following problems occur in the case of a long steel material such as a long rail that is long in one direction.

Since the long steel material has a cross-sectional shape that easily bends in the width direction, it is easy to meander in the width direction of the long steel material. Further, since the lengthwise steel materials also have variations in the height direction, which are not uniform, when the lengthwise steel materials are stacked, the deviations are accumulated and the lengthwise steel materials easily meander in the height direction.
In the case of the technique described in Patent Document 1, if the meandering amount of the long link (long steel material) is larger than the opening/closing width of the arm, or if the long link meanders outside the guide member that sandwiches the long link, the long link becomes long. There is a problem that the link cannot be lifted.
Further, the long steel material does not always meander in a constant shape, but has various meandering shapes depending on the type and lot of the long steel material, the state when placed in a storage place, and the like. Therefore, it is required to hold and suspend the long steel material according to the meandering form.

Even when a worker performs slinging work as in the conventional case, if the long steel material meanders greatly, the distance between the beam and the long steel material becomes large, and the slinging work cannot be performed. Even if the slinging work can be performed, the length of the wire connecting the beam and the long steel material is not constant, so that the long steel material cannot be lifted in good balance. If the long steel material is to be hoisted in that state, the weight load applied to each lifting tool is different, so that the long steel material may have an unstable posture. Further, the long steel material is likely to roll over at a place where the wire is long, and the rolled long steel material may hang down. Further, if the long steel materials roll over, there arises a problem that the long steel materials cannot be stacked.

As the length of the long steel material increases, the amount of meandering of the long steel material as a whole increases, and in addition, the long steel material has a considerable weight, and there is a possibility that the long steel material will shake like a large wave during transportation. In addition, since the cranes and hoisting machines operate individually, there are cases where misalignment occurs during transportation, and posture control during transportation is also important for safely transporting long steel materials.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cargo handling device capable of safely hoisting a long steel material that meanders in various forms and has a large meandering amount in a well-balanced manner.

In order to achieve the above object, the cargo handling device according to the present invention,
A plurality of suspenders for holding long steel materials, a beam for suspending the plurality of suspenders, a plurality of cranes for suspending the beams, and a suspender installed on the suspenders, which operates when contacting the long steel materials Based on a striker and a detection signal from the striker, a lifting device control that controls a lifting device hoist that raises and lowers the lifting device in which the striker is installed, and adjusts a vertical distance between the lifting device and the beam. Section , the deviation of the vertical distance between the hangings is calculated based on the vertical distance between each of the hangings and the beam, and each of the hangings is maintained so as to maintain the deviation of the vertical distance between the hangings. A central control unit for controlling the control unit is provided.

In the present invention, when the striker installed on the hanging tool comes into contact with the long steel material, the lifting tool control unit controls the lifting tool winder that raises and lowers the hanging tool on which the striker is installed, and can hold the long steel material. Lower the hanger to the position. Thereby, the vertical distance between the suspending tool and the beam is adjusted according to the meandering state of the long steel material, and the long steel material can be hoisted in good balance and safely transported.

When a long steel material is hoisted and transported, an excessive force may be applied to the long steel material and the long steel material may be deformed. Therefore, in the present invention , by suspending and transporting the long steel material while maintaining the initial state in which the lifting tool holds the long steel material, the deformation of the long steel material is prevented.

Further, in the cargo handling apparatus according to the present invention, the beam includes a plurality of sub-beams that are continuously provided in the longitudinal direction of the long steel material, and end portions of the sub-beams are connected to each other via a connecting portion. The child beam may be rotatable in a vertical plane including the material axis of the child beam and/or in a plane including the material axis of the child beam and orthogonal to the vertical plane.

In this configuration, since the end portions of the child beams are connected to each other via the connecting portion, each child beam is rotatable in the three-dimensional space and is inclined according to the meandering state of the long steel material. You can Thereby, it becomes possible to cope with the meandering of the long steel material by the inclination of the child beam, and to cope with the local meandering of the long steel material by the respective lifting tool control units.

Further, in the cargo handling apparatus according to the present invention, the suspender may include a stopper that abuts a side portion of the long steel material to position the long steel material in a width direction.
With this configuration, it is possible to accurately and promptly position the long steel material in the width direction.

In the cargo handling apparatus according to the present invention, since the vertical distance between the lifting tool and the beam is adjusted according to the meandering state of the long steel material, even long steel materials that meander in various forms and have a large amount of meandering can be lifted in a well-balanced manner. It can be transported safely.

1 is an overall view of a cargo handling device according to a first embodiment of the present invention. It is a partial detailed view of the cargo handling apparatus according to the first embodiment of the present invention. (A) is a schematic diagram of a plane cross section of a suspender, and (B) is a schematic view of the suspender as seen from the longitudinal direction of a long steel material. It is a schematic diagram for demonstrating the positioning of the long steel material by a stopper. It is the flowchart which showed the procedure of the cargo handling method of the long steel material using the cargo handling apparatus which concerns on the 1st Embodiment of this invention. It is a schematic diagram of the cargo handling apparatus which concerns on the 2nd Embodiment of this invention. (A) is a plan view of the connecting portion, and (B) is a side view of the connecting portion. It is a schematic diagram of the apparatus group linked with a child beam. It is the flowchart which showed the procedure of the cargo handling method of the long steel material using the cargo handling apparatus which concerns on the 2nd Embodiment of this invention.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

The cargo handling device according to the present invention is a device for lifting and transporting a long steel material, such as a long rail, which is long in one direction by a crane. A long steel material having a length of 50 m or more, preferably 70 m or more is a transportation target. There is no particular upper limit on the length of the long steel material, but in reality it is about 500 m or less.

[Cargo handling device according to the first embodiment]
FIG. 1 shows an overall view of a cargo handling device 10 according to the first embodiment of the present invention, and FIG. 2 shows a partial detailed view thereof.
The cargo handling apparatus 10 according to the present embodiment includes a plurality of suspenders 20 that hold the long steel material S, a beam 15 that suspends the plurality of suspenders 20, and a plurality of cranes 12 that suspends the beams 15. Based on the striker 23 installed on the hanging device 20 and operating when contacting the long steel material S, and the detection signal by the striker 23, the hanging device hoisting machine 21 for raising and lowering the hanging device 20 on which the striker 23 is installed is controlled, The lifting tool control unit 22 that adjusts the vertical distance between the lifting tool 20 and the beam 15 is provided.

When transporting the long steel material S, if only one center of the beam 15 is suspended by one crane 12, the transportation posture may become unstable. Therefore, one beam 15 is suspended by the plurality of cranes 12.
In the present embodiment, a gantry crane or an overhead crane is assumed as the crane 12, but the crane 12 is not limited to this, and a crane having another mechanism such as a jib crane may be used.

The length of the beam 15 is not particularly limited and is adjusted according to the length of the long steel material S, but is, for example, about 20 m or more and 500 m or less (preferably 250 m or less). When the length of the beam 15 is too short as compared with the long steel material S, the long steel material S may not be hung, but it is not necessary to be unnecessarily too long as compared with the long steel material S to be transported.

The beam 15 is suspended from the crane 12 via a wire 28 wound around the crane hoist 13.
The hoisting tool 20 is suspended from the beam 15 via a wire 29 wound around the hoisting tool winder 21. The hoist winder 21 is controlled by the hoist control unit 22 and adjusts the vertical distance between the hoist 20 and the beam 15. All lifting equipment controls 22 are connected to a central control 30.
A flexible chain or wire can be used for the wires 28 and 29.

Three pairs of openable hooks 26 for sandwiching and holding the long steel material S are arranged in a zigzag shape in a plan view at the lower end portion of the hanging device 20 so as not to interfere with each other (FIG. 3( See A)). Each hook 26 is opened and closed in the width direction of the long steel material S.
In addition, a striker 23 that slides in the vertical direction when contacting the long steel material S is installed at one end portion in the longitudinal direction of the suspending tool 20 in a plan view, and a striker 23 is provided on a side surface portion of the suspending tool 20. A contact detection sensor 24 and a holding position detection sensor 25 for detecting are installed (see FIGS. 3A and 3B). The contact detection sensor 24 detects whether or not the striker 23 has contacted the long steel material S, and the holding position detection sensor 25 is installed above the contact detection sensor 24 and is a suspender at a position where the long steel material S can be held. Detect if 20 has arrived.

After the crane hoist 13 is operated to lower the beam 15 to the movable range of the lifting device hoist 21, the hoisting of the beam 15 by the crane hoist 13 is stopped.
After the lowering of the beam 15 is stopped, the hoisting device hoisting machine 21 is operated to lower the hoisting device 20. When the striker 23 installed on the hanging 20 contacts the long steel material S, the striker 23 slides toward the contact detection sensor 24. When the contact detection sensor 24 detects the striker 23, the detection signal of the contact detection sensor 24 is input to the suspender control unit 22, and the suspender control unit 22 stops the hoisting device 21 from lowering the suspender 20. (See Figure 2).

Next, in order to hold the long steel material S with the suspenders 20, the suspender winder 21 is operated again, and the suspenders 20 are further lowered. As a result, the striker 23 slides toward the holding position detection sensor 25. When the lifting tool 20 descends to a position where the long steel material S can be held and the holding position detection sensor 25 detects the striker 23, the detection signal of the holding position detection sensor 25 is input to the lifting tool control unit 22 to control the lifting tool. The unit 22 stops the hoisting device 20 from lowering the hoisting device 20 by the hoisting device winding machine 21 (see FIG. 2 ).

The central control unit 30 calculates the deviation of the vertical distance between the hangings 20 based on the vertical distance between the respective hangings 20 and the beam 15, and maintains each deviation of the vertical distance between the hangings 20. It has a function of controlling the hanging tool control unit 22. That is, the long steel material S can be lifted and transported while maintaining the initial state in which the suspending tool 20 holds the long steel material S.
Further, the central control unit 30 checks whether or not each lifting device 20 is in an appropriate vertical position, and if the lifting device 20 is present in an inappropriate position, it controls the lifting device control unit 22 to set it in an appropriate position. It has a function of moving the hanging tool 20.

As shown in FIG. 4, a plate-shaped stopper 27 for positioning the long steel material S in the width direction is attached to the side surface of the suspender 20. By bringing the stopper 27 into contact with the side portion of the long steel material S, the suspending tool 20 is guided to an appropriate holding position.

Next, the operation of the cargo handling device 10 during the cargo handling work of the long steel material S will be described with reference to FIG. For the sake of convenience of explanation, only the suspenders 20a, 20b, and 20c are shown, and the other suspenders are omitted.
(1) The crane hoisting machine 13 mounted on the crane 12 is traversed, and the crane hoisting machine 13 is moved right above the long steel material S to be gripped.

(2) The crane hoist 13 is operated to lower the beam 15 (see FIGS. 5A and 5B1). At this time, the beams 15 are lowered to a position where the long steel material S can be held by lowering the suspenders 20a, 20b, 20c by the suspender hoisters 21a, 21b, 21c.

(3) The lifting device hoisting machines 21a, 21b, 21c are operated to wind down the lifting devices 20a, 20b, 20c. When the contact detection sensor 24a of the lifting tool 20a detects that the striker 23a of the lifting tool 20a has contacted the long steel material S, the lifting tool winder 21a stops the lowering of the lifting tool 20a (see FIG. 5 (B2)). ). On the other hand, the lifting device hoisting machines 21b and 21c are operating, and the lifting devices 20b and 20c are descending. In this state, the strikers 23b and 23c of the suspenders 20b and 20c are not in contact with the long steel material S.
(4) When the contact detection sensor 24b of the lifting tool 20b detects that the striker 23b of the lifting tool 20b has contacted the long steel material S, the lifting tool winder 21b stops lowering the lifting tool 20b (see FIG. B3)). On the other hand, the hoisting device hoist 21c is operating and the hoisting device 20c is descending. In this state, the striker 23c of the hanging tool 20c is not in contact with the long steel material S.
(5) When the contact detection sensor 24c of the lifting tool 20c detects that the striker 23c of the lifting tool 20c has contacted the long steel material S, the lifting tool winder 21c stops the lowering of the lifting tool 20c (see FIG. B4)).

(6) The hoisting devices hoisting machines 21a, 21b, 21c are operated to lower the hoisting devices 20a, 20b, 20c. When the holding position detection sensors 25a, 25b, 25c detect that the hanging devices 20a, 20b, 20c have reached the position where the long steel material S can be held (see FIG. 5(B5)), the hanging device winding machines 21a, 21b. , 21c stop the hoisting of the suspenders 20a, 20b, 20c.
(7) The long steel material S is gripped by the hooks 26a, 26b, 26c of the suspenders 20a, 20b, 20c. Then, the crane hoist 13 is operated to raise the beam 15 (see FIG. 5(B6)).

When placing the gripped long steel material S, the crane hoist 13 is operated to lower the beam 15 to some extent, and then the hoists 20a, 20b, 20c are lifted by the hoist hoists 21a, 21b, 21c. When the signals are further lowered and the signals of the holding position detection sensors 25a, 25b, 25c are detected, the hooks 26a, 26b, 26c of the hanging devices 20a, 20b, 20c are opened to release the long steel material S.

[Cargo Handling Device According to Second Embodiment]
A cargo handling device 11 according to a second embodiment of the present invention is shown in FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
In the cargo handling apparatus 11 according to the present embodiment, the beam for hoisting and transporting the long steel material S is composed of a plurality of child beams 41 continuously arranged in the longitudinal direction of the long steel material S, and an end portion of the child beam 41. They are connected to each other via the connecting portion 16.

Each child beam 41 includes a plurality of cranes 12 (two units in the present embodiment) that suspend the child beam 41, and a plurality of suspenders 20 that are suspended by the child beam 41 and that hold the long steel material S. I have it.

The connecting portion 16 includes a first rotating shaft 18 orthogonal to a vertical plane including the material shaft 17 of the child beam 41 and a second rotating shaft 18 orthogonal to both the material shaft 17 and the first rotating shaft 18 of the child beam 41. It has a pin joint structure having a rotating shaft 19 and a connecting portion 16 is rotatable around the first and second rotating shafts 18 and 19 (see FIGS. 7A and 7B). ). Thereby, each child beam 41 can rotate within a vertical plane including the material axis 17 of the child beam 41 and within a plane including the material axis 17 of the child beam 41 and orthogonal to the vertical plane. That is, each child beam 41 can be tilted according to the meandering state of the long steel material S.

If the connecting portion 16 is configured as shown in FIGS. 7(A) and 7(B), since the rotation is about the rotation axis by the pin joining, the long distance is maintained while keeping the distance between the child beams 41 constant. Each child beam 41 can incline corresponding to the meandering of the length steel material S. Further, since the deviation in the height direction of the long steel material S during transportation corresponds to the first rotating shaft 18, the inclination of the long steel material S in the height direction when the long steel material S is held is maintained. Can be transported as is. On the other hand, regarding the deviation in the width direction of the long steel material S during transportation, the second rotating shaft 19 eliminates the inclination in the width direction of the long steel material S to make it straight, or the width of the long steel material S. It can be transported in conjunction with the inclination of the direction at any time. Therefore, the configuration of the connecting portion 16 in the present embodiment contributes to more stable transportation and placement of the long steel material S.
Note that a rod-shaped member or the like may be interposed between the first rotating shaft 18 and the second rotating shaft 19.

When transporting the long steel material S, if only one center of the child beam 41 is suspended by one crane 12, the transportation posture may become unstable. Therefore, the child beams 41 are suspended by the plurality of cranes 12. In order to adjust the inclination angle and height of the child beam 41, it is preferable to suspend one child beam 41 with two cranes 12.

The length of the child beam 41 may be adjusted according to the length of the long steel material S and the number of the child beams 41, but is about 10 m or more and 60 m or less, for example. If the length of the child beam 41 is too short, control may be complicated, while if the length of the child beam 41 is too long, the child beam 41 may be deformed according to the meandering state of the long steel material S. I can't. The number of child beams 41 to be connected is not limited and is, for example, about 2 or more and 10 or less.

The child beam 41 is suspended from the crane 12 via the wire 28 wound around the crane hoist 13 (see FIG. 8). The crane hoist 13 is controlled by the crane controller 14 and adjusts the vertical distance between the crane 12 and the child beam 41. Further, the hanging device 20 is suspended by the child beam 41 via the wire 29 wound around the hanging device hoist 21. The hoist winder 21 is controlled by the hoist control unit 22, and adjusts the vertical distance between the hoist 20 and the child beam 41. The crane controller 14 and the lifting tool controller 22 of each child beam 41 are connected to the central controller 30.

When the crane hoist 13 is operated and the child beam 41 is lowered, the striker 23 installed on the suspender 20 contacts the long steel material S, and the striker 23 slides toward the contact detection sensor 24. When the contact detection sensor 24 detects the striker 23, the detection signal of the contact detection sensor 24 is input to the crane controller 14, and the crane controller 14 stops the lowering of the child beam 41 by the crane hoisting machine 13 (FIG. 8). reference).
In the present embodiment, when the detection signal of the contact detection sensor 24 of the two suspenders 20 arranged on one side of the child beam 41 is input to one crane control unit 14, one of the child beams 41 is The descending of the child beam 41 by the crane 12 arranged on the other side is stopped, and the detection signal of the contact detection sensor 24 of the two suspenders 20 arranged on the other side of the child beam 41 is detected by the other crane control unit 14. At the time of input, the descending of the child beam 41 by the crane 12 arranged on the other side of the child beam 41 is stopped.

After the descending of the child beam 41 is stopped, in order to hold the long steel material S with the suspending tool 20, the suspending tool hoisting machine 21 is operated to further lower the suspending tool 20. As a result, the striker 23 slides toward the holding position detection sensor 25. When the lifting tool 20 descends to a position where the long steel material S can be held and the holding position detection sensor 25 detects the striker 23, the detection signal of the holding position detection sensor 25 is input to the lifting tool control unit 22 to control the lifting tool. The portion 22 stops the hoisting device 20 from lowering the hoisting device 20 by the hoisting device winding machine 21 (see FIG. 8 ).

The central control unit 30 calculates the deviation of the vertical distance between the cranes 12 based on the vertical distance between the cranes 12 and the child beams 41, and controls each crane so as to maintain the deviation of the vertical distances between the cranes 12. It has a function of controlling the unit 14. That is, the long steel material S can be hoisted and transported while the slant 20 holds the long steel material S while maintaining the initial inclined state of the child beam 41.
Further, the central control unit 30 checks whether or not each lifting device 20 is in an appropriate vertical position, and if the lifting device 20 is present in an inappropriate position, it controls the lifting device control unit 22 to set it in an appropriate position. It has a function of moving the hanging tool 20.

When hoisting and transporting the long steel material S, it may be difficult to make the ascending/descending speed of each crane hoist 13 completely match. If a difference in beam height that differs from that during holding occurs due to this difference in ascending/descending speed (synchronization difference between ascending/descending speeds), a displacement from the time of holding causes a load in the height direction of the long steel material S, and the long steel material S May be damaged. The central control unit 30 can eliminate the load due to the displacement from the holding time by suppressing the displacement of the beam height from the holding time.

Next, the operation of the cargo handling device 11 during the cargo handling work of the long steel material S will be described with reference to FIG. 9. For the sake of convenience of explanation, only the suspenders 20a and 20b are shown, and other suspenders are omitted.
(1) The crane hoisting machines 13a and 13b mounted on the cranes 12a and 12b are traversed, and the crane hoisting machines 13a and 13b are moved right above the long steel material S to be gripped.

(2) The crane hoisting machines 13a and 13b are operated to lower the child beam 41 (see FIGS. 6A and 6A). In this state, the strikers 23a and 23b of the suspenders 20a and 20b are not in contact with the long steel material S (see FIG. 9A).

(3) When the contact detection sensor 24a of the lifting device 20a detects that the striker 23a of the lifting device 20a has come into contact with the long steel material S (see FIG. 9(b)), the crane hoist 13a lowers the child beam 41. Is stopped (see FIG. 9B). On the other hand, the crane hoist 13b is operating. In this state, the striker 23b of the suspender 20b is not in contact with the long steel material S (see FIG. 9B).

(4) When the contact detection sensor 24b of the lifting tool 20b detects that the striker 23b of the lifting tool 20b has come into contact with the long steel material S (see FIG. 9(c1)), the crane hoist 13b lowers the child beam 41. Is stopped (see FIG. 9C). As shown in FIG. 9C, the child beam 41 stands still in a state of being inclined in the vertical plane.

(5) The hoisting devices hoisting machines 21a and 21b are operated to lower the hoisting devices 20a and 20b. When the holding position detection sensors 25a and 25b detect that the hanging devices 20a and 20b have reached the position where the long steel material S can be held (see FIG. 9(c2)), the hanging device hoisting machines 21a and 21b detect the hanging device 20a. , 20b is stopped.
Alternatively, the crane hoisting machines 13a and 13b are operated, and the hanging equipments 20a and 20b are lowered in accordance with the descending of the child beam 41 (the hoisting equipment hoisting machines 21a and 21b are not operated). When the holding position detection sensors 25a and 25b detect that the hoists 20a and 20b have reached the position where the long steel material S can be held (see FIG. 9(c2)), the hoisting of the crane hoisting machines 13a and 13b is stopped. To do.

(6) The long steel material S is held by the hooks 26a and 26b of the suspenders 20a and 20b. Then, the crane hoisting machines 13a and 13b are operated to raise the child beam 41 (see FIG. 9(c3)).

Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations described in the above embodiments, and is considered within the scope of the matters described in the claims. It also includes other possible embodiments and modifications. Further, various modifications and combinations of the above-described embodiments may be made without departing from the scope of the present invention. For example, in the above embodiment, one pair of hooks is equipped with three pairs of hooks, but one pair or more may be attached, and instead of the hooks, an electromagnet may be used to hold the long steel material. Good. Further, in the above embodiment, the hooks are arranged in a zigzag shape in plan view so that the hooks do not interfere with each other, but other arrangements in which the hooks are not on the same straight line may be used.

10, 11: Cargo handling device, 12, 12a, 12b: Crane, 13, 13a, 13b: Crane hoist, 14: Crane controller, 15: Beam, 16: Connection part, 17: Shaft, 18: First Rotation axis, 19: second rotation axis, 20, 20a, 20b, 20c: lifting equipment, 21, 21a, 21b, 21c: lifting equipment winding machine, 22: lifting equipment control unit, 23, 23a, 23b, 23c: striker, 24, 24a, 24b, 24c: contact detection sensor, 25, 25a, 25b, 25c: holding position detection sensor, 26, 26a, 26b, 26c: hook, 27: stopper, 28, 29: wire rod, 30 : Central control unit, 41: Child beam, S: Long steel material

Claims (3)

A plurality of suspenders for holding long steel materials, a beam for suspending the plurality of suspenders, a plurality of cranes for suspending the beams, and a suspender installed on the suspenders, which operates when contacting the long steel materials Based on a striker and a detection signal from the striker, a lifting device control that controls a lifting device hoist that raises and lowers the lifting device in which the striker is installed, and adjusts a vertical distance between the lifting device and the beam. Section , the deviation of the vertical distance between the hangings is calculated based on the vertical distance between each of the hangings and the beam, and each of the hangings is maintained so as to maintain the deviation of the vertical distance between the hangings. A cargo handling apparatus, comprising: a central control unit that controls the control unit . In handling apparatus according to claim 1 Symbol placement, the beam, a plurality of child beams provided continuously in the longitudinal direction of the long steel ends of said child beam is coupled through a coupling portion, each A cargo handling device, wherein the child beam is rotatable in a vertical plane including the material axis of the child beam and/or in a plane including the material axis of the child beam and orthogonal to the vertical plane. The cargo handling apparatus according to claim 1 or 2 , wherein the lifting device includes a stopper that abuts a side portion of the long steel material to position the long steel material in a width direction.

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