JPH0810079Y2 - Reader enclosure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a leader storage device used for storing a leader for driving a pile in a pile driving ship.

[Prior Art] A conventional pile driving ship has a hull 1 as shown in FIG.
The leader suspension crane 3 for operating the leader 2 for pile driving is mounted on the deck on the bow side, and the storage base 4 for storing the leader 2 is installed on the deck on the stern side. When navigating, as shown by the one-dot chain line, the leader 2 is laid down in a substantially horizontal state and placed on the storage stand 4 to be stored, and after reaching the stake work point, the leader suspension crane 3 is moved. By raising the boom 5, the leader 2 is pulled up, and further rotated 180 degrees so that the leader 2 is supported vertically on the pile driving work point as shown by the solid line, and then the leader 2 in the vertical state is supported. The driving operation of the piles 6 can be performed along the line.

In the above pile driving ships, the air draft (AIR DRAF
T) It was not necessary to pass through the restricted water area, but in recent years, it has become necessary to pass through the air draft restricted water area under the bridge (for example, 7m restriction) due to the remote expansion of the pile driving work points. It was Therefore, in order to cope with the passage of the air draft restricted water area, the height of the storage stand 4 is lowered and the reader 2 is stored in a posture close to horizontal.

[Problems to be solved by the invention] However, since the leader 2 has a weight of as much as 30T, in order to pull out the leader 2 from an almost horizontal position by operating the leader suspension crane 3 in order to perform pile driving work. However, there is a problem in that the leader-hanging crane 3 must be equipped with a capacity that is greater than that required during normal pile driving work.

Therefore, the present invention provides a leader hoist that allows the posture of the leader to be almost horizontal or to be erected to a position where it can be pulled up by the leader hoisting crane without operating the leader hoisting crane. It is an object of the present invention to provide a leader storage device having a mechanism so that the leader suspension crane does not have to have an excessive capacity.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a post on a deck of a pile driving ship that is vertically divided so that it can be bent from the middle and is flexibly connected by a hinge. , Standing upright in parallel in the left-right direction with a required space, a bending device for bending the post is installed on each of the posts, and a leader for driving a pile is provided in the middle part between the posts. A storage base for supporting is arranged so as to be able to move up and down, and further, an elevating device for the storage base is provided.

[Operation] When the cradle is lowered, the reader can be placed in a substantially horizontal posture, and when the post is folded in two, the height of the post can be lowered, so that the post can pass through the restricted water area without any hindrance. Become. In addition, by making the post linear and raising the storage base, the position of the leader can be raised to a state where it starts to stand up from a substantially horizontal state, which makes it easier to pull up the leader with the leader suspension crane. It is not necessary to make the capacity of the leader suspension crane excessive. [Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention.
On the deck of the stern of the hull 1, two posts 7a, 7b are erected at right and left at a required interval, and the respective posts 7a, 7b are provided as upper post bodies 8a, 8b and lower post bodies 9a, 9b. It is divided into two, and the lower ends of the upper post bodies 8a and 8b and the upper ends of the lower post bodies 9a and 9b are foldably connected by hinges 10a and 10b so as to be tilted outward in the left-right direction, and further, the hinges described above. Hydraulic cylinders 11a, 11b for bending the posts 7a, 7b are interposed between the upper post bodies of the portions 10a, 10b and the outer surface portions of the lower post bodies 9a, 9b, and the hydraulic cylinders 11a. , 11b
By the shortening operation, the posts 7a and 7b are folded in half between the upper post bodies 8a and 8b and the lower post bodies 9a and 9b so that the overall height of the posts 7a and 7b can be lowered. Also, both posts above
Guide rails 12 extending vertically are provided on the facing surfaces of 7a and 7b.
Support beams 13 installed horizontally with a and 12b
The guide rails 12a, 12b are engaged with the guide rails 12a, 12b so as to be able to move up and down, and a storage stand 15 is installed at the central portion of the support beam 13 so that the intermediate portion of the leader 2 can be received by the rollers 14. Further, the support beam 13 is provided with guide sheaves 16a, 16b at the left and right positions inside, and sheave units 17a, 17b made of a plurality of sheaves at both left and right ends of the upper surface, and the upper post body 8a, At the upper end of 8b, the protruding members 18a, 18b that are projected to face each other are provided with similar sheave units 19a, 19b so as to correspond to the sheave units 17a, 17b. One wire 21 fixed by the equalizing member 20 at the center
Both ends of the left and right guide sheaves 16a, 16b, between the left and right sheave units 17a, 17b and 19a, 19b, and further on the lower ends of the lower post bodies 9a, 9b, sheaves 22a, 22b, on the hull 1 After being successively laid over the sheaves 24a, 24b, they are bound and wound around the coaxial winches 23a, 23b installed on the hull 1, respectively,
By driving the coaxial winches 23a and 23b to wind and unwind the wire 21, the supporting beam 13 is held in a horizontal state and is hung up and lowered, whereby the leader 2 which is received on the storage table 4 is received. Allow the position to be displaced up and down.

It is necessary to store the reader 2 in a posture close to horizontal until it passes through the air draft restricted water area. In this case, if the coaxial winches 23a and 23b are driven to rewind the wire 21, the storage stand Since the load of the leader 2 placed on the support beam 15 acts on the support beam 13,
Is a guide rail 1 provided on the facing surface of the bolts 7a, 7b.
By being suspended by its own weight while being guided by 2a and 12b, the leader 2 is lowered to a substantially horizontal state as shown by the alternate long and short dash line in FIGS. Next, the hydraulic cylinders 11a and 11b are shortened to move the posts 7a and 7b at the intermediate hinges 10a and 10b.
Make a broken state. That is, each of the posts 7a and 7b is divided into upper post bodies 8a and 8b and lower post bodies 9a and 9b, and the divided portions are foldably connected by hinges 10a and 10b, so that the hydraulic cylinder 11a, When 11b is shortened, the upper post bodies 8a, 8b are bent outward in the left-right direction about hinges 10a, 10b as fulcrums as shown by the chain line in Fig. 2, thereby increasing the height of posts 7a, 7b. Can be lowered. Therefore, it is possible to pass through the air draft restricted water area by sailing in such a posture.

When the posture of the leader 2 is changed after the arrival at the pile driving work point and the leader 2 is supported vertically on the pile driving work point, first, the hydraulic cylinders 11a and 11b are extended and operated to bend the upper post body. The upper post bodies 8a, 8b and the lower post bodies 9a, 9b are set in a straight line by standing up the 8a, 8b.
Next, the coaxial winches 23a and 23b are driven in the winding direction and the wire 21 is wound to lift the support beam 13 to a predetermined height. In this case, the wire 21 is a single wire, and the middle portion is fixed to the central portion in the support beam 13 by the equalizing member 20, and the coaxial winches 23a and 23b that rotate in synchronization are used. The support beam 13 is hoisted while maintaining the horizontal balance while maintaining the left-right balance. As a result, the leader 2 mounted on the storage base 15 on the support beam 13 is lifted so as to rotate upward from the position indicated by the one-dot chain line in FIGS. 1 and 2 to the position indicated by the two-dot chain line. The posture can be changed. At this time, since the leader 2 is received by the roller 14 in the storage base 15, the positional deviation due to the rotation of the leader 2 can be absorbed by the rotation of the roller 14. Next, the leader 2 thus hoisted to a predetermined height position is attached to the boom 5 of the leader suspension crane 3.
After pulling it up further, it is turned so that it is supported vertically on the pile driving work point as shown by the solid line in Fig. 1. At this time, the leader 2 is pulled up in a posture close to horizontal. Since it is not from the position where the reader 2 is already raised, but from the position where the reader 2 is already raised, a smaller force is required than when the reader 2 is raised from a position that is nearly horizontal. Therefore, it is not necessary for the leader suspension crane 3 to have an excessive capacity that is greater than the capacity required for normal pile driving work.

It should be noted that the present invention is not limited to the above-described embodiments, and for example, the case where the device of the present invention is provided on the deck of the stern side of the hull 1 is shown, but the invention is not limited to the stern. Although the case where the bending operation of the posts 7a, 7b is performed by the hydraulic cylinders 11a, 11b has been shown, it is possible to use an air cylinder, a gear, and other foldable devices other than the hydraulic cylinders, and the storage unit 15 The winch 23a, 23b
However, it is possible to raise and lower together with the support beam 13 via the wire 21 by means of the above, but it is also possible to use other lifting devices such as cylinders, and the weight of ships and marine structures other than pile driving ships. It is of course optional to use it as a storage device for outfitting items, and it is needless to say that various modifications can be made without departing from the scope of the present invention.

[Effects of the Invention] As described above, the reader storage device of the present invention exhibits the following excellent effects.

(I) Since the post can be folded in half by operating the hydraulic cylinder when the leader is stored in a posture that is almost horizontal, the limit height can be adjusted.

(Ii) Since the position of the leader can be raised by raising the storage base, the work of raising the leader by the leader suspension crane is facilitated, and it is not necessary to give the leader suspension crane an excessive capacity.

(Iii) Since the reader can be raised and lowered easily by operating the winch, one-man control is possible.

[Brief description of drawings]

FIG. 1 is a schematic view of a pile driving ship showing an embodiment of the leader storage device of the present invention, and FIG. 2 is an enlarged view in the direction II of FIG.
FIG. 3 is a schematic perspective view of FIG. 2, and FIG. 4 is a schematic view showing an example of a pile driving ship. 1 ... Hull, 2 ... Leader, 7a, 7b ... Post, 10a, 10b ... Hinge, 11a, 11b ... Hydraulic cylinder (folding device), 15 ...
Storage stand, 19a, 19b ... Sheave unit at the upper end, 21 ... Wire, 23a, 23b ... Coaxial winch (elevating device).

Claims (1)

[Scope of utility model registration request] 1. A post, which is vertically divided so as to be bent from the middle and foldably connected by a hinge, is erected on a deck of a pile driving ship in parallel with a required space in the left-right direction. A bending device for bending the post is installed on each post, and a storage stand for supporting a leader for driving a pile at an intermediate portion is arranged between the posts so that the post can be moved up and down. A reader storage device, characterized by comprising a storage platform lifting device.