JPH0373698B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pile holding device for a pile driver.

For example, when building a pier in shallow sea,
Recently, a pile driver is supported on top of the piles that have been driven, and the piles are continuously driven into the underwater ground while moving over the pile head, without requiring work from the water that is done with a pile driving boat. Construction methods are known.

Figure 1 shows an example of the pile driver used in the above construction method and the piles that have been driven. In the figure, number 1 indicates a pile driven into the underwater ground with the upper part exposed above the water. A large number of these piles 1 are arranged side by side at a predetermined interval in the horizontal direction of the drawing, and a pair are arranged in parallel at a predetermined interval in the front and back directions of the drawing. A support beam 2 is installed between the upper ends of the piles 1, 1 arranged in parallel in the front and back directions of the drawing, and a drive device 3 is installed on the end of the support beam 2 on each pile 1. Long feed girders (vertical girders) 4, 4 spanning several drive devices 3 lined up in the left and right direction in the drawing are constructed above the drive device 3, and a work floor is provided on the upper surface above the feed girders 4, 4. A connecting beam 5 having a diameter 5a is attached across the feed beams 4,4. Then, a holding device is installed on this working floor 5a, and a pile is driven further to the left of the pile 1 at the left end in the drawing. That is, a guide frame 6 with a guide rail is installed horizontally at the left end of the feed girders 4, 4 that protrude further to the left of the pile 1 at the left end of the drawing,
A holding device A, which will be described below, is horizontally movably attached to the guiding frame 6, and a crane 10 equipped with a boom 9 for hoisting the hammer 7 and the flying leader 8 is installed on the work floor 5. Drive the piles with their directions regulated under the feed beams 4 and 4 using the hammer 7, and after driving, erect the support beams on top of the piles, install the drive device on top of them, and then The feed beams 4, 4 are driven by the drive device 3 shown in the drawing.
Move it to the left side of the drawing and place the feed girders 4, 4 on the newly installed drive device, then move the hammer 7 again.
The process of driving the piles was repeated over and over again.
Drive the stakes one by one to the left of the drawing.

Here, the holding device A includes a fixed frame 1 attached to the guide frame 6 so as to be movable along the guide frame 6.
1, and a tilting frame 12 rotatably supported by the fixed frame 11 in a plane parallel to the plane of the drawing.
It consists of holding members 13 attached to the upper and lower parts of the tilting frame 12, respectively, and a hydraulic cylinder 14 attached to the fixed frame 11 to rotate the tilting frame 12. By tilting the guide member 13 at a predetermined angle, the driving angle of the pile can be set.

By the way, when driving piles into underwater ground, it may be necessary to tilt the piles in various directions, so it is important to be able to set the driving angle as described above. In case A, it is not possible to support the pile by tilting it in a plane perpendicular to the plane of the drawing, and therefore conventional pile drivers cannot drive the pile by tilting it in any direction. I had a lot of flaws.

This invention solves the above problem by comprising a hydraulic cylinder that rotates a pile back and forth around a support pin of a shaft body, and a revolving body that is equipped with this hydraulic cylinder and that rotates left and right in a vertical plane. The object of the present invention is to provide a pile holding device for a pile driver that can tilt the pile back and forth and left and right and hold it at any angle of inclination in any direction.

Hereinafter, the present invention will be explained in detail based on the drawings.

FIGS. 2 and 3 show an embodiment of this invention, in which reference numeral 30 is a work floor, and 31 is a rail laid on the work floor. At the tip of the working floor 30 and on the rail 31, a traveling trolley 32 that runs in the length direction of the girder is mounted with wheels 32a pivoted on the lower surface thereof, and is installed by, for example, a fixed jack. There is.

A pair of rails 3 are provided at the tip of this traveling trolley 32.
3 are laid at right angles to the running direction of the traveling truck 32 and at a predetermined interval, and a crane A for suspending the piles is placed behind the piles. A transverse truck 34, which runs perpendicular to the traveling direction of the traveling truck 32, is mounted on the rails 33 of the traveling truck 32 with its wheels 34a mounted thereon using fixed jacks or the like. This transverse truck 34 includes a truck body 34b and a truck body 34b.
The wheel 34a is pivotally supported on the lower surface of the wheel 34a. Note that the front portion 34c of the truck body 34b and the tip portion 32b of the traveling truck 32 are provided to substantially coincide with the tip portion 30a of the work floor 30 and the tip portion of the girder.

On the other hand, on the truck body 34b, there is a rotating body 35 that is rotatable within a range of, for example, 60 degrees to the left and right in a vertical plane with respect to the traveling direction of the traveling truck 34.
It is supported horizontally. Note that the truck body 34b
is equipped with a drive source that drives the rotating body 35. The revolving body 35 is composed of a revolving ring 36 which is pivotally supported by a truck body 34b, and a bearing 37 having a support plate 37a and a reinforcing plate 37b protruding from the front part of the revolving ring 36. That is, a pair of substantially triangular support plates 37a are provided at the front of the swivel ring 36, the bottom sides of which are fixed, and are arranged parallel to each other on the left and right sides of the center axis of the swivel ring 36. At the same time, a right triangular reinforcing plate 37b is provided with one side fixed to the outer surface of the support plate 37a and a bottom side fixed to the pivot ring 36 at a right angle. A long hole 37d into which the support pin 38 is inserted is provided in the rectangular portion 37c formed at the tip of the support plate 37a, with its long side extending substantially horizontally and along the center axis of the rotating body 35. ing.

Therefore, the pair of support plates 37a of the bearing 37
In between, a cylindrical shaft body 39 passes through the support pin 38 at a right angle approximately in the center thereof, and the support pin 38 is attached thereto.
It is inserted into and supported by a pair of opposing elongated holes 37d. That is, the shaft body 39 has its support pin 3
8 as a fulcrum, rotates backward (in the traveling direction of the traveling trolley 32) in a plane sandwiched by the pair of support plates 37a, and horizontally moves back and forth through the length S of the elongated hole 37d. It's getting old. In addition, shaft body 3
A reinforcing member 39 is provided around the opening of the support pin insertion hole 9 .

On the other hand, a pair of holders 41 are attached to both ends of the shaft 39 in parallel with the shaft 39 and in front of the shaft 39a for holding stakes 40. A pair of hydraulic cylinders 42a and 42b serving as expansion and contraction means are connected to both ends of the shaft body 39 and to the rear thereof, with piston rods 42c and d rotatably supported thereon. Moreover, this hydraulic cylinder 42a,
The cylinders 42e and 42f of b are the pair of support plates 3
7a and is attached to the front part of the swivel ring 36. The shaft 39, that is, the pile 40 supported by the holder 41, is moved by the driving force of the hydraulic cylinders 42a and 42b, for example, at a distance of 30 degrees in each direction around the support pin 38 of the shaft 39.
It is designed to tilt within a 60° range. In other words, the stroke amount of the piston rods 42c and 42d is
The stake 40 is set to incline within a range of 30 degrees in both directions around the support pin 38. Note that this hydraulic cylinder 42 is located inside the swing ring 36.
A drive source for driving a and b is built-in.

Next, the operation of the pile holding device according to the present invention will be explained.

First, the rotating body 35 is rotated to correct the horizontal inclination of the shaft 39 supported at the tip of the bearing 37, and the hydraulic cylinders 42a, b are driven to rotate the shaft 39 around the support pin 38. The shaft body 39 is rotated back and forth to correct the front and rear inclination of the shaft body 39.
9 is installed almost vertically. Next, the pile 40 suspended by a crane is set in the holder 41 of the shaft 39. After setting the stake 40 in the holder 41, the stake 40 is then tilted to a predetermined angle of inclination. That is, the pile 40 is tilted forward (second
To do this, the piston rod 42c of the upper hydraulic cylinder 42a is extended, the piston rod 42d of the lower hydraulic cylinder 42b is retracted, and the shaft body 39 is tilted forward about the support pin 38. Moreover, in order to tilt the pile 40 backward, the hydraulic cylinders 42a and 42b are driven in the opposite direction.

In addition, in order to finely adjust the horizontal position of the pile 40 back and forth, instead of simply tilting the pile 40 forward or backward, the shaft body 39 can be moved in parallel in the horizontal direction.
Adjust the pouring position of 0. In this case, the piston rods 4 of the upper and lower hydraulic cylinders 42a, 42b
2c and 42d may be expanded or contracted by the same stroke. That is, the support pin 38 of the shaft body 39 is
Since it is inserted into the long hole 37d of 7, this long hole 3
The position of the pile 40 can be moved in the horizontal direction by a length S of 7d, making it possible to finely adjust the driving position of the pile 40 in accordance with the turning conditions at the site.

On the other hand, in order to tilt the pile 40 to the left (rightward in FIG. 3), for example, the rotating body 35 may be rotated counterclockwise (rightward in FIG. 3). As the revolving body 35 rotates, the shaft 39, that is, the pile 40, rotates counterclockwise about the support pin 38 and tilts to the left. In order to tilt the pile 40 to the right, the rotating body 35 may be rotated in the opposite direction.

In addition, the cylinders 42 of the hydraulic cylinders 42a and 42b
Since e and f are installed on the rotating body 35, if the hydraulic cylinders 42a and 42b are driven and the rotating body 35 is rotated at the same time, the pile 40 can not only be tilted back and forth, but also left and right, diagonally forward, and diagonally backward. It can be freely tilted in any direction within a predetermined angle range centered on the support pin 38, which is set in advance.

In the above embodiment, the hydraulic cylinder 4
The stroke amount of the piston rods 42c, d of 2a, b and the rotation range of the rotating body 35 are 30 degrees each in the front and back of the shaft body 39, that is, the pile 40, and 30 degrees each in the left and right directions.
It is set to tilt in 30° increments, but the stroke amount and rotation range can be adjusted as necessary.
The angle of inclination in the front, rear, left, and right directions may be increased or decreased. In addition, a hydraulic cylinder 42 is used as the expansion and contraction means.
Instead of a and b, for example, a screwdriver may be used. In this case, the attachment position of the bearing 37 to the rotating body 35 may be changed so that the support pin 38 can be inserted into the elongated hole 37d of the bearing 37.

As explained above, the pile holding device of the present invention includes a hydraulic cylinder that rotates the shaft body back and forth around a support pin, and a rotating body that is equipped with the hydraulic cylinder and drives left and right in a vertical plane. Because it is equipped with a support pin, the pile held in the holder of the shaft body can be tilted forward and backward and left and right, and can be held at any angle of inclination in any direction. Since the pile can be moved within the long hole of the bearing by expanding and contracting, it is possible to finely adjust the pile driving position by horizontally moving the pile in parallel. Piles can be driven with high precision.

In addition, since the shaft body, that is, the pile, can be rotated and moved in the horizontal direction by a pair of hydraulic cylinders, there is no need to use two types of jacks.
This has the advantage of reducing the number of parts and weight.

[Brief explanation of drawings]

FIG. 1 is a side view showing a conventional pile driver, and FIGS. 2 and 3 show an embodiment of the present invention.
The figure is a side view of the pile holding device, and FIG. 3 is a front view thereof. 34b...Body body, 35...Swivel body, 37d
...Elongated hole, 38...Support pin, 39...Shaft, 4
0...Pile, 41...Holder, 42a, b...Hydraulic cylinder.

Claims (1)

[Claims] 1. A revolving body having a long hole at its tip and supported by a truck body so as to be able to freely rotate left and right in a substantially vertical plane, and a support pin inserted into the long hole so as to be movable back and forth along the long hole. and a shaft mounted so as to be rotatable back and forth about a support pin as a fulcrum, a pair of holders attached to this shaft to support the pile, one end of each holder attached to the rotating body, and the other end attached to the shaft. A pair of expansion and contraction means, which are connected to each other so as to sandwich the support pin in the body, rotate the shaft body about the support pin as a fulcrum, and move the shaft body along the elongated hole. A pile holding device for a pile driver, characterized by: