JPH0841873A - Pile driving boat - Google Patents

Abstract

PURPOSE:To make it possible to drive a pile longer than the height of a pile driving tower in a pile driving boat. CONSTITUTION:A pile driving tower 3 is so mounted on a pile driving boat that it can be inclined to the inside of the boat, and when a pile 10 is started to build, the tower 3 provided to the pile driving boat 1 is inclined to the inside of the boat up to an adequate angle, and the pile 10 is set with a crane, etc., while it being overhung to the sea side along the tower. After the pile 10 is firmly bound to the tower 3 with a pile binding device 26 provided to the tower 3, and after the tower 3 is raised up to make the tower 3 in a vertical state, the head of the pile 10 is held with a pile hanger 5, and the depth of water is used by releasing the pile binding device 26 to make it possible to build the pile 10 higher than the tower 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile driving ship provided with a device for pile building and pile driving (hereinafter also referred to as "pile driving") on a ship, and particularly to a long boat. The present invention relates to a pile driving ship capable of handling piles.

[0002]

2. Description of the Related Art In the construction of a pile in a conventional pile driving ship, as shown in FIG. 8, a pile 9 is laid on another barge 20 and the barge is connected to the pile driving ship 1 and then the pile is piled up. While tilting the beating tower 3 toward the sea surface, lower the pile hanging bracket 5 from the tip,
After gripping the upper part of the pile 9 (state a), the wire 6a was wound up by the winch 6, and the pile 9 was about to be lifted, and the piling hammer 3 was set at a predetermined position.

[0003]

By the way, in the conventional method as described above, in order to build a pile, as shown in FIG. 8, a pile driving tower longer than the length of the pile 9 is indispensable.
When a pile longer than the height of a pile driving pile is required, there is a problem in that two piles have to be spliced together.

The present invention is intended to solve such a problem. At the start of construction, the pile driving tower of a pile driving ship is tilted inside the ship to an appropriate angle, and the pile is moved along the tower with a crane or the like. After placing it on the tower in the state of overhanging to the sea side and securing it to the tower, by causing the tower to go, it is possible to use the water depth to stake piles longer than the tower height. , For the purpose of providing a pile driver.

[0005]

In order to achieve the above-mentioned object, the pile driving ship according to claim 1 is a pile driving ship in which a lower end portion is pivotally mounted on the ship so as to be tiltable at least inward. A striking yagura, and a drive mechanism for tilting the yagura,
The present invention is characterized in that it is provided with a pile staking device capable of staking the pile placed along the front surface of the above-mentioned tower tilted inward of the ship to the tower.

Further, the pile driving ship according to claim 2 is the same as claim 1.
In the pile driving ship described in (3) above, a pile suspending metal fitting provided on the yagill is provided so as to be able to descend from the upper end of the yagura, and the pile suspending metal has a pile head gripping / releasing mechanism. I am trying.

Further, the pile driving ship according to a third aspect of the present invention is, in the pile driving ship, provided with a pile driving tower having a lower end pivotally mounted on the ship so as to be capable of tilting, and a drive mechanism for tilting the same. , A pile hammer for hitting the heads of piles that are released from the tower and erected on the seabed is provided, and the hammers follow the guides horizontally arranged in the tower and the heads of the piles. The feature is that it can be traversed directly above.

Still further, the pile driving ship according to claim 4 is a pile driving ship, in which a lower end of the pile is pivotally mounted on the ship so as to be capable of tilting at least inboard, and for tilting the same. Equipped with a drive mechanism, a pile staking device that can stake the pile placed along the front of the above-mentioned tower tilted to the inside of the ship to the same tower, and that can be lowered from the upper end of the tower. It is equipped with a pile suspension metal fitting that has a gripping and releasing mechanism for the pile head and a hammer for hammering the pile that is released from the tower and built on the seabed to hit the head of the pile, and the hammer is horizontal to the tower. It is characterized in that the head of the pile can be traversed right above along a guide arranged in the lateral direction.

[0009]

In the pile driving ship of the present invention described above, the pile driving tower of the pile driving ship is tilted to the inside of the ship at an appropriate angle at the start of pile construction, and the crane is mounted on the pile driving ship or the pile carrier ship. After placing the pile along the front of the tower in the state of overhanging toward the sea side and securing it to the tower, use the tower to create a long pile that is at least the tower height by using the water depth. It is possible to hold it on a pile for driving. When the pile fastening device is released, the pile falls into the sea by its own weight and the pile is built.

It is also possible to carry out this construction while gripping the pile head with the pile suspending metal and adjusting the falling speed of the pile. In addition, after mounting the pile, the pile hammer can be moved laterally (sliding) from the storage position to the space formed between the head of the pile and the top plate of the yagura. It is not necessary to secure it (before building the piles), and it becomes possible to handle piles that are as long as the dimension corresponding to the space.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pile driving ship as an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view thereof, FIG. 2 is a front view of an essential part thereof, and FIG. 4 is a plan view of relevant parts, FIG. 5 is a schematic plan view of a mounting structure of the sheave and winch, FIG. 6 is a side view of the same, and FIG. 7 is a front sectional view of the same.

As shown in FIG. 1, a swivel base 2 is attached to the bow or side of the ship of the pile driving ship 1, and the pile driving is carried out at the front end (right end in FIG. 1) of the swivel base 2. The lower ends of the pair of left and right front side frame members 3b forming the operating tower 3 are pivots 3a.
Is pivotally attached to the inside and the outside of the ship via the. The yagura 3 may be composed of three or more frame bodies.

A hydraulic cylinder 4 as a drive mechanism for tilting the yagura 3 is interposed between a pair of left and right rear side frame bodies 3d constituting the yagura 3 and the swivel base 2, and the hydraulic cylinder 4 is provided. By operating, the tower 3 can be held in the vertical position B, and the tower 3 can be tilted inward to the tilted position indicated by the symbol A, or can be tilted outward to the tilted position indicated by the symbol C. Has become. The front end of the swivel base 2 has a shape projecting forward from the bow side or the ship side end of the pile driving ship 1, and extends from the upper end of the yagura to the lower end thereof at the center of the front side frame body 3b of the yagura 3. Similarly, a leader 9 for mounting the pile 10 is attached.

A sheave 7 is rotatably mounted on the top plate 3c of the yagura 3, while a winch 6 is mounted on the swivel base 2. The wire 6a wound around the winch 6 hangs down along the center of the front surface of the yagura 3 through the sheave 7, and the pile hanging metal fitting 5 is attached to the end thereof. The pile suspension fitting 5 has a gripping / releasing mechanism for the pile head.

Reference numeral 8 in FIG. 1 is a winch for suspending a hydraulic hammer 13 (a hydraulic hammer will be described later in detail) as a hammer for driving a pile, and reference numeral 11 is a tower 3 tilted toward the inside of the ship. The reference numeral 26 designates a tower supporting column for supporting the piles, and the reference numeral 26 designates a pile fastening device attached to the leader 9.

In the above structure, the pile 10 is built by the following procedure. That is, the hydraulic cylinder 4 is contracted to tilt the kettle 3 inwardly to the tilted position indicated by the symbol A. At this time, the leader 9 also tilts together with the yagura 3.

Then, the piles 10 are moved by a crane (not shown) mounted on the pile driving ship 1 or a pile carrier (not shown).
And hang the pile 10 horizontally on the front of the yagura 3 with the leader 9 attached to the front of the yagura 3 overhanging to the sea side (the length direction of the pile 10 and the length of the yagura 3). Place them in the same direction) and pile them with the pile securing device 26.
Secure 10 to Yagura 3.

In this state, the hydraulic cylinder 4 is extended to raise the yagura 3 up to a predetermined angle such as the vertical position indicated by the symbol B or the tilted position toward the outer side indicated by the symbol C, and the swivel base 2 is further swung. , Set the building position.
Then, the gripping mechanism of the pile suspension metal fitting 5 is operated to grasp the upper portion of the pile 10 with the pile suspension metal fitting 5, and the pile fastening device 26 is released. The pile fastening device 26 functions as a guide for descending the pile even after it is released. Next, the winch 6 is operated to lower the pile suspension fitting 5, and the pile 10 is dropped into the sea by its own weight, and the construction of the pile is completed.

Thus, in this embodiment, the pile 10
At the start of construction of the building, the yagura 3 equipped on the pile driving ship 1 is tilted inside the ship to an appropriate angle and the pile 10 is installed with a crane or the like.
A pile 10 having a height equal to or higher than that of the yagura 3 can be erected by utilizing the water depth by setting it in the state of overhanging to the sea side along the seashore, and tying it up and then raising the yagura 3. It is also possible to release the pile securing device 26 and drop the pile 10 into the sea under its own weight without using the pile suspension fitting 5 to perform construction.

At the end of the construction of the pile 10, a space corresponding to the fall distance of the pile is created between the top plate 3c of the yagura 3 and the top of the pile 10. In the pile driving ship of this embodiment, a hydraulic hammer for pile driving can be set in this space. That is, as shown in FIGS. 2 to 4, a pair of upper and lower guides 21 and 21 each having an L-shaped cross section are provided on the right side frame 3b of the pair of left and right front side frame bodies 3b of the tower 3 near the top of the tower 3. , Are provided so as to face each other and to be spaced apart and to be horizontally inwardly projected.

A base plate 22 is mounted on both guides 21, 21 so as to be movable in the horizontal direction, and a movable reader 12 is attached to the front surface of the base plate via a bracket 22a. Then, the bracket 22a and the front side frame body 3 of the yagura 3
A pair of hydraulic cylinders 23, 23 are vertically spaced from the frame 3b on the left side of b, and when the hydraulic cylinders 23, 23 extend and retract, the base plate 22 is moved to a movable leader. Along with the guide 12, it can be moved horizontally along with the guide 12. The pair of hydraulic cylinders 23, 23 are arranged in a space formed between the guide plate 22 and the movable leader 12 attached to the front surface (right side in FIG. 3).

A hydraulic hammer for staking the movable leader 12
Reference numeral 13 is attached so as to be movable in the vertical direction via a plurality of guide brackets 12a. Reference numeral 8a indicates a wire wound around the winch 8 (see FIG. 1), and the hydraulic hammer 13 is suspended on the wire 8a. Reference numeral 24 (Fig. 5
Indicates a sheave for guiding the wire 8a,
The sheave 24 is rotatably attached to the sheave base 15 together with the sheave 7.

A roller 16a is attached to the lower surface of the sheave base 15 via a roller block 16, and the sheave base 15 is moved by the roller 16a on the top plate 3c of the yagura 3 in the left-right direction (perpendicular to the plane of FIG. 1). Direction, left and right direction in FIG. 2). Reference numeral 17 (FIG. 6) is a guide member for the T-shaped end face projectingly provided on the lower surface of the sheave base 15.
The guide / stopper of the sheave base 15 which can be slidably contacted with 15a is shown. The stopper 17 also has a function of holding the position of the sheave base 15 and preventing it from falling.

Further, reference numeral 18 denotes a hydraulic cylinder for moving the sheave base 15 interposed between the top plate 3c of the yagura 3 and the sheave base 15, and the sheave base 15 is provided by these members. The left-right direction moving device is configured. Winch 6
The winch 8 is also mounted on the winch base 14 (see FIG. 5), and the winch base 14 also has a horizontal movement device including rollers, guide members, guides / stoppers and hydraulic cylinders similar to the sheave base 15. It is provided so that the winch bed 14 can move in the left-right direction in synchronization with the sheave bed 15.

As described above, after the construction of the pile 10 is completed,
When a space is formed between the upper end of the pile 10 and the top plate 3c of the tower 3, the hydraulic cylinder 23 is contracted to slide the movable reader 12 inward (left in FIG. 2),
By aligning the movable leader 12 and the fixed leader 9 (setting the movable leader 12 on the same line as the fixed leader 9), the hydraulic hammer 13 is released from the pile driving tower and is built on the seabed. Can be set directly above 10 heads.

When the movable leader 12 is slid inward, the sheave base 15 and the winch base 14 are slid in the same direction in synchronization with the movement of the movable leader 12 by operating the hydraulic cylinder 18 or the like. By this procedure, the pile hammer 10 and the winch 8 (including the wire 8a) and the pile 10 can be arranged on the same straight line, and the pile hammer 10 can be piled by the hydraulic hammer 13.

As described above, in this embodiment, when the pile is built, the hydraulic hammer 13 for driving the pile is laterally displaced, and the top plate 3c of the pile and the tower 3 formed after the pile is built.
Since the hydraulic hammer is returned to the space between and, it is possible to set a hydraulic hammer having a large ability at a predetermined position.

That is, since a hydraulic hammer having a large capacity has a considerably long length, if the hammer is set at a predetermined position from the beginning, the space under the yag is shortened and the length of the pile is restricted. , As in this embodiment, if a hydraulic hammer for driving a pile is slid sideways during pile construction and then returned to a predetermined position after construction, a large space under the tower can be secured, and a large capacity can be obtained. It is possible to use the hydraulic hammer. The sliding type mounting method of the hydraulic hammer for pile driving can be applied to the conventional pile hammer for pile driving shown in FIG.

[0029]

As described in detail above, according to the pile driving ship of the present invention, the following effects and advantages can be obtained. (1) It is possible to easily and safely build a pile for pile driving longer than the height of the tower. This effect is particularly noticeable when the depth of water in the pile driving place is deep. (2) When the soil quality of the seabed is soft, when the pile is dropped, it penetrates into the seabed by its own weight, so the upper space of the pile expands by this penetration amount, and it is possible to use a long hammer for pile driving. .

[Brief description of drawings]

FIG. 1 is a side view of a pile driving ship as an embodiment of the present invention.

FIG. 2 is a front view of the relevant part.

FIG. 3 is a side sectional view of the same main part.

FIG. 4 is a plan view of the same main part.

FIG. 5 is a schematic plan view of a mounting structure for the sheave and winch.

FIG. 6 is a side view of the same.

FIG. 7 is a front sectional view of the same.

FIG. 8 is a schematic side view showing pile driving by a conventional pile driving ship.

[Explanation of symbols]

1 Pile driver 2 Swiveling base 3 Pile driving tower 3a Pivot 3b Front side frame 3c Top plate 3d Rear side frame 4 Hydraulic cylinder as a drive mechanism for tilting the yagura 5 Pile suspension bracket 6 Winch 6a Wire 7 Sheave 8 Winch 8a Wire 9 Leader 10 Pile 12 Movable leader 12a Guide bracket 13 Hydraulic hammer as hammer for pile driving 15 Sieve base 21 Guide 22 Base plate 22a Bracket 23 Hydraulic cylinder 24 Sheave 26 Pile fastening device

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Minoru Kawarada 8-21-1, Ginza, Chuo-ku, Tokyo Stock company Takenaka Corporation Tokyo Main Store (72) Inventor Akio Suzuki 1-chome, Otsuka, Inzai-cho, Inba-gun, Chiba Prefecture 5th Stock Company Takenaka Corporation Technical Research Institute

Claims (4)

[Claims] 1. A pile driving ship having a lower end portion pivotally mounted on the ship so as to be able to tilt at least inward of the ship,
It is characterized by comprising a drive mechanism for tilting the yagura and a pile staking device capable of staking a pile placed along the front of the yag tilted inward of the ship to the yagura. ,
Pile driver. 2. The pile driving ship according to claim 1, further comprising a pile hanging metal fitting mounted on the yagura so as to be able to descend from the upper end of the yagura, and the pile hanging metal fitting gripping and releasing the pile head. A pile driving ship characterized by having a mechanism. 3. A pile driving ship comprising a pile driving yag pivotally mounted at the lower end on the ship so as to be tiltable, and a drive mechanism for tilting the yagura, which is released from the yagura to be built on the seabed. A hammer for hammering the head of the attached pile is provided, and the hammer is equipped so as to be able to traverse directly above the head of the pile along a guide horizontally arranged in the yagura. A pile driven ship characterized by the above. 4. A pile driving ship having a lower end pivotally mounted on the ship so that it can be tilted at least inwardly in the pile driving ship.
A drive mechanism for tilting the yagura, a pile staking device that can stake a pile placed along the front of the above-mentioned yag tilted inboard to the same, and descend from the upper end of the above-mentioned yagura. It is equipped with a pile suspension fitting that is equipped in the same tower and has a mechanism for gripping and releasing the pile head, and a hammer for hammering the pile that is released from the tower and is built on the seabed and that strikes the head of the pile, A pile driving ship, wherein the hammer is equipped so as to be able to traverse directly above the head of the pile along a guide horizontally arranged in the yagura.