JP2012062168A - Method of transferring cargo handling machine, and swivel joint for transferring cargo handling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer an existing cargo handling machine at a quay wall to a transport ship during berthing at low cost.SOLUTION: A running bogie 30 connected to a leg 20 of the cargo handling machine 1 with a lock pin is held with a jack 40, the lock pin 34 is pulled out to separate the leg and a traveling bogie, a swivel joint 50 is inserted between both the separated parts, the traveling bogie is rotated so as to allow the traveling direction to turn into the normal line direction of a wall surface 101 in a quay wall 100, and the cargo handling machine is moved in the normal line direction with the traveling bogie easily transferable. The swivel joint includes an upper member 60 having a through hole 23 for the lock pin and a hole 61 formed at the same axle in the leg and a lower member 70 having a through hole 35 for the lock pin and a hole 71 formed at the same axle in the traveling bogie, the jack is installed at a position which does not interfere the traveling bogie from being rotated, and the leg, the upper member, the traveling bogie and the lower member are connected with individual lock pins 62, 72, respectively.

Description

  The present invention relates to a method for transferring a cargo handling machine such as a container crane or an unloader to a transport ship such as a barge that is berthed on a quay when a cargo handling machine such as a container crane or an unloader is transported by sea. It also relates to a swivel joint used in the method.

  FIG. 1 shows a structural diagram of a container crane 1 which is a typical cargo handling machine. In this figure, it is assumed that the wall surface 101 of the quay 100 extends in the normal direction of the paper surface. The container crane 1 generally includes a main body structure 10 that functions to load and unload the container 15, and a traveling device (travel bogie) 30 for moving the main body structure 10 along the quay 100. It consists of and. The main body structure 10 has two legs 20 (a sea-side leg 20f and a land-side leg 20r) extending in the vertical direction in pairs on the sea 102 side and the land 103 side of the quay 100, and horizontally extending on the land side. The girder 11, the boom 12 pivotally supported at the sea end of the girder 11, the girder 11 and the trolley 13 that is guided and traversed by the boom 12, and the trolley 13 is raised and lowered relative to the container 15. It is constituted by a spreader 14 or the like that can be combined.

  Here, assuming that the normal direction to the wall surface 101 of the quay wall 100 is the front-rear direction, the sea 102 side is the front, the land 103 side is the rear, and the direction along the wall surface 101 of the quay 100 is the left-right direction, The traveling bogie 30 attached to the lower end of each leg (20f, 20r) on the land 103 side has a lateral direction as the traveling direction, and the main body structure 10 itself is moved in the lateral direction by the traveling bogie 30 (in the drawing, the depth of the page). Direction). And since the trolley 13 moves back and forth, the spreader 14 can be moved to any position on the deck plane of the container-loading ship that is in contact with the berth.

  By the way, when a huge cargo handling machine such as a container crane or unloader is newly installed on the quay, or when an existing cargo handling machine is diverted to another place, the cargo handling machine is transferred to a carrier such as a barge. It will be transported by sea. As a method of transferring a cargo handling machine to a transport ship, a transfer form called a lift-on-off type in which a cargo handling machine is delivered between a ship and a quay using a large floating crane is well known (for example, non-patent) Reference 1).

  However, when a floating crane is used, it is necessary to install the floating crane in both the loading port and the unloading port, and this transfer method cannot be used in a port where the floating crane itself is not installed. In addition, transfer using a floating crane is very expensive. Of course, the cargo handling machine cannot be lifted during strong winds. If the transfer operation is postponed, of course, an economic loss corresponding to the delay occurs. Furthermore, when using a floating crane, there is a problem that navigation of surrounding water areas must be restricted.

  Therefore, as a transfer method that is relatively strong against strong winds, a cargo handling machine that can normally move linearly only in the left-right direction along the quay is run directly in the direction of the wall surface normal of the quay and transferred directly to a carrier ship berthed on the quay. There is a way. Specifically, a cargo handling machine in which a traveling bogie can rotate in a horizontal plane is used, and at the time of transfer, the traveling direction of the traveling bogie is directed to the quay normal (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2000-21118

Norihisa Kawai, “Redevelopment of Tokyo Port Oi Container Pier-Overview of Remodeling of Large Container Crane”, Port Handling, Association of Port Handling Machinery Systems, September 1999, Vol. 44, No. 5, p. 512-517

  As in the technique described in Patent Document 1, the method of moving a traveling bogie in the normal direction of the wall surface of the quay and transferring the loading machine has conventionally been provided with a rotating mechanism of the traveling bogie in the loading machine. Was the premise. That is, it is necessary to use a dedicated cargo handling machine equipped with a traveling bogie rotation mechanism from the beginning. Alternatively, it was necessary to make extensive modifications to the existing cargo handling machine, such as cutting off the original travel bogie attachment site and attaching a rotating mechanism.

  In the case of using a dedicated cargo handling machine, if there is an existing cargo handling machine, the existing cargo handling machine is replaced with a new cargo handling machine, which entails enormous costs. Of course, dismantling and removing the existing cargo handling machine also takes a great deal of cost and time. Even when remodeling an existing cargo handling machine, it still takes a lot of cost and time. Furthermore, a large work space is required for remodeling, and other loading and unloading operations performed at the same port may be hindered. In addition, modification of structures such as cargo handling machinery requires the approval of the owner and the approval of the competent authority, and it takes a long time to get approval and approval, and respond to fire transportation projects. I can't.

  The present invention has been made in view of the above-described various problems in transferring a conventional cargo handling machine, and its main object is substantially to an existing cargo handling machine that can travel along a quay. The object is to provide a method of transferring the material to a carrier ship berthing on the quay without moving, moving in the normal direction of the quay at a low cost in a short time.

In order to achieve the above object, the present invention provides a cargo handling machine in which a plurality of legs are connected to each other by a rocker beam and a lock pin of a traveling bogie at each lower end, and can travel along the wall wall extending direction. It is a method that makes it possible to transfer to a transport ship that is berthing by moving in the normal direction of the wall surface,
A jack installation step of installing a jack with respect to the traveling bogies connected to each of the legs, and a holding step of holding the cargo handling machine by the jack so that the lock pin can be removed;
A separation step of removing the lock pin and raising the jack to separate the travel bogie from the leg;
A connecting step of inserting a swivel joint having a rotation axis in a vertical direction between the separated leg and the rocker beam, and connecting the swivel joint to both the leg and the rocker beam;
Rotating step of rotating the traveling bogie around the rotation axis of the swivel joint and directing the traveling direction of the traveling bogie in the normal direction;
A lowering step for lowering the jack;
A transfer step of moving the cargo handling machine in the normal direction by the traveling bogie and transferring the cargo handling machine to the carrier ship; and
Including
The swivel joint is composed of an upper block member and a lower block member that are rotatably supported in a horizontal plane while being pivotally supported by the rotation shaft and arranged opposite to each other vertically.
The upper block member includes an upper connecting hole arranged coaxially with an insertion hole of the lock pin in the leg,
The lower block member includes a lower connection hole arranged coaxially with an insertion hole of the lock pin in the rocker beam,
In the jack installation step, in the rotation step, the jack is installed at a position that does not interfere with the traveling bogie,
In the connecting step, the leg and the upper block member are connected by a first lock pin, and the lower block member and the rocker beam are connected by a second lock pin. This is a loading method for cargo handling machines. In the jack installation step, it is more desirable to install one jack for each traveling bogie so as to be closest to the rotation shaft of the swivel joint.

The present invention also extends to the swivel joint used in the loading method for the cargo handling machine. In the swivel joint, a plurality of legs are connected to each other by a rocker beam and a lock pin of a traveling bogie at each lower end. It is a swivel joint that is used when transferring to a transport ship that is moving in the normal direction and berthing,
The upper block member and the lower block member, which are opposed to each other in the vertical direction, are pivotally supported by a rotation shaft having the vertical direction as an axial direction, and are relatively rotatable in a horizontal plane.
The upper block member includes an upper connecting hole arranged coaxially with an insertion hole of the lock pin in the leg,
The lower block member includes a lower connection hole arranged coaxially with an insertion hole of the lock pin in the rocker beam,
The upper block member and the leg are fixed with a first lock pin, and the lower bob member and the rocker beam are fixed with a second lock pin, so that the traveling bogie can be rotated in a horizontal plane. And
This is a swivel joint for transferring cargo handling machines.

  According to the loading method of the cargo handling machine of the present invention, the existing cargo handling machine that can travel along the quay is not modified, and the cargo handling machine can be moved in the normal direction of the quay wall in a short time and at a low cost. It can be transferred to a transport ship that has moved and berthed.

It is a figure which shows schematic structure of a cargo handling machine. It is a figure which shows the structure of the traveling bogie of the cargo handling machine used as the object of this invention. It is a figure which shows the outline of the transfer method of the conventional cargo handling machine. It is a figure which shows the outline of the transfer method of the cargo handling machine in the Example of this invention. It is a figure which shows operation | movement of the swivel joint used in the said transfer method. In the said cargo handling machine, it is a figure which shows the state by which the traveling direction of the traveling bogie was changed. It is a figure which shows the movement state in the plane of the travel bogie accompanying the arrangement | positioning of the jack in the said Example, and the work | work until it isolate | separates and reconnects a travel bogie.

=== Mounting structure of traveling bogie ===
In the loading method of the loading machine according to the present invention, the traveling direction of the loading machine by the traveling bogie can be changed to the normal direction of the wall surface of the quay without using a dedicated loading machine or modifying the existing loading machine. It can be. The subject of the present invention is the cargo handling machine 1 provided with the traveling bogie shown in FIG. 1, but it is assumed that the leg body 20 and the traveling bogie 30 are connected in a predetermined structure.

  FIG. 2A is an enlarged view of the lower portion of the cargo handling machine 1 that is the subject of the present invention, and corresponds to, for example, a view of the cargo handling machine 1 shown in FIG. 1 viewed from the land 103 side or the sea 102 side. To do. That is, in FIG. 2A, two pairs of legs 20 on the sea 102 side or land 103 side are shown. And in the cargo handling machine 1 shown here, the leg body 20 arrange | positioned by a pair of two right and left is connected by the sill beam 22 extended in the left-right direction, and the traveling bogie 30 is the lower end 21 of each leg body 20. Installed on.

  FIG. 2B is a partially enlarged view of FIG. 2A and shows a connection structure between the leg 20 and the traveling bogie 30 which is a premise of the present invention. A carriage 33 having wheels 32 is attached to a rocker beam 31 that evenly distributes a load from above, and the rocker beam 31 has an insertion hole 35 of a lock pin 34 that penetrates in a direction orthogonal to the traveling direction. Is provided. Each leg 20 of the main body structure 10 holds the rocker beam 31 from the front and rear at the lower end 21, and the lower end 21 is provided with an insertion hole 23 for the lock pin 34. The lock pin 34 is inserted while the insertion hole 23 formed in the lower end 21 of the leg 20 and the insertion hole 35 of the rocker beam 31 are arranged coaxially, and the traveling bogie 30 is inserted into each leg 20. It is connected. In the illustrated cargo handling machine 1, the leg body 20 and the rocker beam 31 are connected by the single lock pin 34, but a plurality of them may be provided. In any case, the present invention is directed to the cargo handling machine 1 having a structure in which the leg 20 and the rocker beam 31 are connected by the lock pin 34.

=== Transfer procedure of cargo handling equipment ===
Conventionally, when the traveling direction of the traveling bogie 30 of the cargo handling machine 1 is changed, modification is performed according to the connection structure between the traveling bogie 30 and the main body structure 10. For example, when the traveling bogie 30 is fastened to the leg 20 with a flange structure, the upper and lower flange members are separated and the swivel joint is sandwiched between the upper and lower flange members. When the traveling bogie 30 is integrally welded to the leg body 20, the traveling bogie 30 is separated from the leg body 20, and a flange member for attaching a swivel joint has been newly provided.

  Further, in the cargo handling machine 1 in which the connecting structure between the leg 20 and the traveling bogie 30 is as shown in FIG. 2, a transfer method according to the procedure shown in FIGS. 3 (A) to (F) is also employed. . 3, as in FIG. 2, the lower part of the cargo handling machine 1 is shown enlarged when viewed from the sea 102 side or the land 103 side. First, for each of the traveling bogies 30, as many jacks 40 as necessary are installed, and the jacks 40 are raised to such an extent that the lock pins 34 connecting the lower ends 21 of the legs 20 and the rocker beams 31 can be removed. . That is, the load of the main body structure 10 applied to the rocker beam 31 is held by the jack 40, and the load applied to the lock pin 34 is released (A).

  After removing the lock pin 34, the jack 40 is further raised to completely separate the leg 20 and the rocker beam 31, and the traveling bogie 30 is moved to a position that does not interfere with the next work (B). . Then, the lower end 21 of the separated leg 20 is cut (C), and a swivel joint 150 having a rotation axis in the vertical direction is welded to the cut surface 25 (D). In the swivel joint 150, the upper and lower members (160, 170) rotate relative to each other, and the upper member 160 is formed with a welding surface with the cut surface 25 of the leg body 20. Is formed with a hole 171 disposed coaxially with the insertion hole 35 of the lock pin 34 in the rocker beam 31. Then, the travel bogie 30 that has been moved is returned to the lower side of the leg body 20, and the hole 171 in the swivel joint 150 and the insertion hole 35 in the rocker beam 31 are coaxially arranged and removed first. The lock pin 34 or another lock pin is inserted into the holes (170, 35) (E). Accordingly, the leg body 20 and the traveling bogie 30 are re-coupled so as to be rotatable via the swivel joint 150. That is, the cargo handling machine 1 can move in the front-rear direction orthogonal to the left-right direction, which is the normal traveling direction (F).

  As described above, in the conventional transfer method of the cargo handling machine 1, a complicated operation of removing and re-tightening a large number of bolts that have fastened the upper and lower flange members and a large-scale operation of cutting the leg 20 are performed. It was necessary. Further, in the conventional transfer method shown in FIG. 3, when the leg 20 is cut or the swivel joint 150 is welded, it is necessary to move the traveling bogie 30 to a position away from the leg 20. Therefore, the space required for the moving work is required, and there is a possibility that it disturbs other work in the harbor. In the conventional transfer method, the existing main body structure 10 is modified, and prior approval or permission is required.

  On the other hand, in the transfer method of the cargo handling machine 1 according to the embodiment of the present invention, the cargo handling machine 1 in which the lower end 21 of the leg 20 and the rocker beam 31 of the traveling bogie 30 are connected by the lock pin 34 is an object. By using a special swivel joint specialized for the cargo handling machine 1, the cargo handling machine 1 can be transferred in a short time and at a low cost without modifying the main body structure 10. FIG. 4 shows a work procedure in the transfer method in the embodiment of the present invention. 4 (A) to 4 (C) are outlines of the procedure, and show a view when the lower part of the cargo handling machine 1 is viewed from the sea 102 side or the land 103 side, as in FIG. (A) is a state corresponding to the start of work, and shows two pairs of legs 20. (B) and (C) are enlarged views of one leg 20. Further, (D) is an enlarged view of the circle 110 in (C), and (E) is a cross-sectional view taken along the line aa in (D).

  In the transfer method of the cargo handling machine 1 according to the present embodiment, first, the jack 40 is installed for each traveling bogie 30 (A). In this example, when the jack 40 is installed, the head 41 is brought into contact with the portion of the sill beam 22 that protrudes outside the pair of left and right legs. Next, the jack 40 is raised, the load of the main body structure 10 applied to the rocker beam 31 is held by the jack 40, and the load on the lock pin 34 is released. After removing the lock pin 34, the jack 40 is further raised to completely separate the leg 20 and the rocker beam 31 (B). And the swivel joint 50 which has the rotating shaft 51 in the vertical direction is inserted between the lower end 21 and the rocker beam 31 of the separated leg 20, and the lower end 21 of the leg 20 and the rocker beam 31 are set in the vertical direction. The swivel joint 50 is fixed to both the leg 20 and the rocker beam 31 so as to be relatively rotatable (C).

  As described above, each of the leg 20 and the rocker beam 31 includes the insertion holes (23, 35) of the lock pin 34 that has connected both (20, 31), and both (20, 31) are connected. When it was in, each insertion hole (23, 35) was arrange | positioned coaxially. However, after the separation, as shown in FIG. 4B, the insertion holes (23, 35) are separated from each other in the vertical direction. And the swivel joint 50 used in the transfer method of the present embodiment is the cargo handling machine 1 targeted by the present invention, that is, the lower end 21 of the leg 20 and the rocker beam 31 of the traveling bogie 30 are the lock pins 34. A special structure specialized in the transfer method of the connected cargo handling machines 1 is provided.

  In this embodiment, as shown in FIGS. 4D and 4E, the swivel joint 50 is composed of upper and lower block members (60, 70) that are pivotally supported by a common rotating shaft 51 and relatively rotated. The upper block member 60 and the lower block member 70 are arranged coaxially with the insertion holes (23, 35) through which the lock pins 34 for connecting the legs 20 and the rocker beams 31 are inserted. (Hereinafter, the upper connection hole 61 and the lower connection hole 71) are formed. When the swivel joint 50 is fixed to both the leg 20 and the rocker beam 31, the individual lock pins (62, 72) are connected to the upper and lower connecting holes (61, 71) of the upper and lower block members (60, 70). ) Is inserted. That is, the upper block member 60 and the lower end of the leg 20 are connected by the first lock pin 62, and the lower block member 70 and the rocker beam 31 are also connected by another second lock pin 72. Thereby, the leg 20 and the rocker beam 31 can be relatively rotated, and as a result, the traveling direction of the traveling bogie 30 can be rotated in a horizontal plane. Further, the leg body 20, the lock pin 62, and the upper block member 60 are arranged so that the swivel joint 50 itself does not rotate in the vertical plane with the lock pin 62 connecting the leg body 20 and the upper block member 60 as an axis. A fixing device 24 is provided for fixing the two to each other. In this example, a fixing device 24 is provided in the gap between the upper block member 60 and the leg body 20. Needless to say, the present invention is not limited to the illustrated example, and it is sufficient that a device or mechanism is provided in which the lock pin 62 does not rotate relative to both the insertion hole 23 in the leg 20 and the upper block member 60 connection hole 62. .

  Any one of the first lock pin 62 for connecting the upper block member 60 and the leg 20 and the second lock pin 72 for connecting the lower block member 70 and the rocker beam 31 is The lock pin 34 that originally connected the lower end 21 of the leg 20 and the rocker beam 31 can be used. Of course, both the first and second lock pins (62, 72) It may be different from the lock pin 34.

  5A to 5C are perspective views showing the rotation state of the swivel joint 50. FIG. Only the swivel joint 50 is shown in a partially broken perspective view in FIG. As shown in FIG. 5A, the actual swivel joint 50 is provided with a plate-shaped reinforcing material 66 that connects the wall portions 65 through which the lock pins 62 penetrate in the upper block member 60. This is because, when a load is applied in a state where the lock pins (62, 72) are inserted through the upper and lower block members (60, 70), the wall portion through which the lock pin 72 inserted through the lower block member 70 is inserted. This is because the bottom plates (64, 74) opposed to each other in the upper and lower block members (60, 70) may be distorted upward, and the reinforcing member 66 may be The bottom plate 64 of the member 60 is prevented from being deformed. In FIGS. 5B and 5C, the reinforcing material 66 is omitted so that the rotation state of the swivel joint 50 can be easily understood.

  First, when the traveling bogie 30 is in the initial state, that is, when the traveling direction is the left-right direction, the upper and lower connecting holes (61, 71) in the upper and lower block members (60, 70) have the axial direction (63, 73). Parallel (A). Then, the upper and lower block members (60, 70) are rotated relative to each other (B). Finally, the axial direction of the upper and lower connecting holes (61, 71) in each of the upper and lower block members (60, 70) ( 63, 73) are rotated until they are 90 ° to each other (C). Thereby, the traveling direction of the traveling bogie 30 is directed in the front-rear direction. That is, it faces in the normal direction of the wall surface 101 of the quay wall 100.

  If the traveling direction of the traveling bogie 30 is in the normal direction, the jack 40 is lowered and the traveling bogie 30 is grounded. Then, as shown in FIG. 6, the main body structure 10 itself is moved by the traveling bogie 30 and transferred to the transporting ship 80 that is berthing. In actual transfer, a travel rail for the travel bogie 30 may be temporarily installed between the quay 100 and the transport ship 80, and the travel bogie 30 may be guided by the rail and transferred.

=== About the number of jacks installed and the installation position ===
In the conventional transfer method shown in FIG. 3 and the like, since it is necessary to make extensive modifications to the leg body 20, the traveling bogie 30 removed from the leg body 20 is temporarily attached from the vicinity of the leg body 20. It was moved. Therefore, a large work space is required. On the other hand, in the transfer method of the present embodiment shown in FIG. 4, the travel bogie 30 is removed in the jacked-up position, the swivel joint 50 is attached, and the swivel joint 50 is moved without translating the travel bogie 30 in the horizontal plane. All the operations of connecting the leg body 20 and the traveling bogie 30 via the can be performed. However, if the position of the jack 40 is not considered, the traveling bogie 30 rotated by the swivel joint 50 may interfere with the jack 40.

  FIG. 7 illustrates the relationship between the installation position of the jack 40 (40, 40b) and the rotation operation of the traveling bogie 30 in the horizontal plane in the transfer method of the present embodiment. As shown in this figure, here, an example in which two jacks (40a, 40b) are installed for one traveling bogie 30 is shown.

  In the present embodiment, the two jacks (40, 40b) have the rotation axis o of the traveling bogie 30 as an origin, and two axes that pass through the origin o and are orthogonal to each other in a plane in the front-rear and left-right directions ( xx, y-y), it is placed in a quadrant to be pointed with respect to the origin o and at a position that does not hinder the rotation work of the traveling bogie 30 (s1). Then, as shown in FIGS. 4A to 4C, the procedure from jack-up of the main body structure 10 to connection of the swivel joint 50 is performed. Next, the traveling bogie 30 is rotated without being translated at the jacked-up initial position P (s2). In this example, if the traveling bogie 30 is rotated clockwise, the traveling bogie 30 does not interfere with the jack 40 during the rotation. When the traveling bogie 30 is rotated by 90 ° and the traveling direction thereof is directed in the front-rear direction (s3), the jacks (40a, 40b) are lowered and the transfer operation to the transport ship 80 is started.

  As described above, in the transfer method of this embodiment, the traveling bogie 30 can be rotated at the initial position P that is jacked up without being translated in the horizontal plane, and the working time and cost can be greatly saved. Can also solve the problem of disturbing other operations in the port. In addition, about the installation position of a jack (40a, 40b), it is desirable to set it as the position as close as possible to the axis | shaft of the columnar leg 20 which supports the weight of the main body structure 10. FIG. Thereby, when jacking up, the distance between the position where the head 41 of the jack (40a, 40b) abuts on the leg 20 can be shortened, and the moment of inertia with the leg 20 as the action point is reduced as much as possible. be able to. For example, when the head 41 of the jack (40a, 40b) is brought into contact with the sill beam 22, distortion of the sill beam 22 due to the weight of the main body structure 10 can be minimized, and work safety is improved. Can do.

  In some cases, the main body structure 10 can be held by installing the jacks 40 near the legs 20 without using the two jacks (40a, 40b). In this case, it is not necessary to synchronize the ascending / descending operations of the two jacks (40a, 40b), and it can be expected that the work efficiency is increased and the cost for the transfer work is reduced. Of course, the number of jacks 40 can be appropriately increased or decreased according to the weight of the main body structure 10 or the like. Anyway, it should just be installed in the position which does not interfere with the traveling bogie 30 in rotation.

1 cargo handling machine, 10 body structure, 20, 20f, 20r leg, 21 lower end of leg,
22 Sill beam, 23 Leg connecting hole, 30 Travel bogie, 31 Rocker beam,
33 bogies, 34 original lock pins, 35 rocker beam connection holes,
40, 40a, 40b jack, 41 jack head,
50 swivel joint, 51 swivel joint rotation axis,
60 upper block member, 61 upper connecting hole, 62 first lock pin,
70 Lower block member, 71 Lower connection hole, 72 Second lock pin, 80 Transport ship,
100 quay, 101 quay wall, 102 sea, 103 land

Claims (3)

A plurality of legs are connected to each other by a rocker beam and a lock pin of a traveling bogie at each lower end, and a cargo handling machine capable of traveling along the wall extension direction of the quay is moved in the normal direction of the wall to contact the berth A method for enabling transfer to a transporting ship,
A jack installation step of installing a jack with respect to the traveling bogies connected to each of the legs, and a holding step of holding the cargo handling machine by the jack so that the lock pin can be removed;
A separation step of removing the lock pin and raising the jack to separate the travel bogie from the leg;
A connecting step of inserting a swivel joint having a rotation axis in a vertical direction between the separated leg and the rocker beam, and connecting the swivel joint to both the leg and the rocker beam;
Rotating step of rotating the traveling bogie around the rotation axis of the swivel joint and directing the traveling direction of the traveling bogie in the normal direction;
A lowering step for lowering the jack;
The transfer step of moving the cargo handling machine in the normal direction by the traveling bogie so that the cargo handling machine can be transferred to the carrier ship,
Including
The swivel joint is composed of an upper block member and a lower block member that are rotatably supported in a horizontal plane while being pivotally supported by the rotation shaft and arranged opposite to each other vertically.
The upper block member includes an upper connecting hole arranged coaxially with an insertion hole of the lock pin in the leg,
The lower block member includes a lower connection hole arranged coaxially with an insertion hole of the lock pin in the rocker beam,
In the jack installation step, in the rotation step, the jack is installed at a position that does not interfere with the traveling bogie,
In the connecting step, the leg and the upper block member are connected by a first lock pin, and the lower block member and the rocker beam are connected by a second lock pin.
A transfer method for a port cargo handling machine characterized by the above.   2. The method for transferring a cargo handling machine according to claim 1, wherein, in the jack installation step, one jack is installed so as to be closest to the leg body for each traveling bogie. A plurality of legs are connected to each other by a rocker beam and a lock pin of a traveling bogie at their lower ends, and a cargo handling machine capable of traveling along the quay wall extending direction is moved in the normal direction of the quay wall surface. A swivel joint that is used when transferring to a carrier ship
The upper block member and the lower block member, which are opposed to each other in the vertical direction, are pivotally supported by a rotation shaft having the vertical direction as an axial direction, and are relatively rotatable in a horizontal plane.
The upper block member includes an upper connecting hole arranged coaxially with an insertion hole of the lock pin in the leg,
The lower block member includes a lower connection hole arranged coaxially with an insertion hole of the lock pin in the rocker beam,
The upper block member and the leg are fixed with a first lock pin, and the lower bob member and the rocker beam are fixed with a second lock pin, so that the traveling bogie can be rotated in a horizontal plane. And
A swivel joint for transferring cargo handling machines.

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