JPH0621955Y2 - Earth Auger Attachment for Seaside Pile Driver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an earth auger attachment for a coastal pile driver.

[Prior Art] The applicants previously constructed a pier, when a work boat cannot be used because the water depth of the seabed to be piled is shallow, or when a pier or offshore is continuous from land to offshore. When constructing a continuous jetty, a pile truck is movably installed on the pile and moved on the pile, and a movable arm is provided in front of the pile truck and can be moved in and out at the tip of the pile. A technique for performing pile driving while holding the pile with a pile keeper has been disclosed (JP-A-60-156824).

This technology is less affected by weather conditions, sea conditions, etc., it is easy to maintain the pile driving accuracy during pile driving, and oblique pile driving is also possible. It is a technology.

In this technology, as a pile keeper for gripping a pipe, the actual open Sho 61-116836 or the actual open Sho 61-11683
There is 4.

[Problems to be solved by the device]

When performing pile driving using the coastal pile driving method developed as such a new pile driving system, it is difficult to perform pile driving that secures sufficient rooting in hard ground areas such as bedrock. was there.

An object of the present invention is to attach an attachment to the above-mentioned coastal pile driving device so that the earth auger drilling method can be used in combination with rocks on the seabed, thereby enabling pile driving to hard ground.

[Means for Solving the Problems]

The present invention is a tubular attachment to be attached to a pile keeper of a coastal pile driver having a pile keeper for gripping a pile being piled, the outer diameter of which is to be gripped by the pile keeper, and the outer diameter of the pile keeper Equipped with a flange to prevent rotation, the earth auger is stored movably in the pipe axis direction, and a plurality of splines that slide by engaging with the pawls provided on the drive part body of the earth auger are projected on the inner diameter. An earth auger attachment for a coastal pile driver, which is capable of drilling in any direction.

[Action]

When the attachment of the present invention is used, a casing pipe type tubular attachment is attached to the pile keeper of a coastal pile driving machine having a pile keeper, whereby perforation can be performed in any direction by an earth auger. Also,
Since it is an attachment type, it is possible to change both normal pile driving work and earth auger drilling work very easily by simply selecting whether to hold the pile or the attachment with the pile keeper. is there. further,
Since a plurality of pairs of claws are provided on the driving part body of the earth auger and a plurality of splines which the claws engage with and slide on are provided, a hole inclined in any direction with respect to the vertical direction is bored by the earth auger. Sometimes the earth auger does not become eccentric in the attachment, and vertical movement of the earth auger does not become difficult.

〔Example〕

FIG. 3 shows a side view of a coastal pile driver 20 to which the attachment of the present invention is applied. The seaside pile driver 20 is a driving pile 21.
The movable arm 23 is projected forward from the pile driving cart 22 placed on the upper side, and the pile keeper 24 is attached to the tip of the movable arm 23.
The pile keeper 24 holds the pile 25 so that the pile 25 can move up and down, and the pile driving hammer 26 is used to attach the pile 2 to the wire 2.
Suspend pile driving at 7.

The pile keeper 24 can be tilted in any direction and angle with respect to the vertical direction, as illustrated in FIG.

The attachment of the present invention is gripped by the pile keeper 24 and fixed so as not to move up and down and rotate about the axis, and the earth auger suspended from the wire 27 is moved up and down to make a hole.

FIG. 1 (a) is a vertical cross-sectional view of the attachment 1 of the embodiment of the present invention in which the earth auger 2 is built in, and FIG. 1 (b) is a plan view thereof. FIG. 2 is a side view of the pile keeper 24 equipped with the attachment 1 of the embodiment.

The attachment 1 has an outer diameter dimension that is gripped by the gripper 28 of the pile keeper 24. Further, the attachment 1 has an outer diameter provided with a flange 3 for coupling with the pile keeper 24,
It is connected to the pile keeper 24 by the bolts 4 and the like, and is prevented from rotating. Earth Auger 2 in Attachment 1
Is provided with a cavity. Earth Auger 2
Is usually one guide rail 5 as illustrated in FIG.
It has a guide 6 which is laid over and slides on a guide rail 5. In the attachment 1 of the present invention, the earth auger 2
As shown in FIG. 1 (b), it has a cylindrical shape, and a large number of claws 7 are projected on the outer periphery thereof. The attachment 1 is provided with a plurality of splines 8 that engage with the claws 7. The claw 7 provided on the drive body is engaged with the spline 8, and when the earth auger is inclined and punched, the plurality of splines support the earth auger so as to prevent the earth auger from being eccentric. , It is possible to easily perform inclined drilling in any inclined direction. The earth auger 2 is suspended by the wire 27 and moves up and down, and the spline 8 supports the rotational reaction force of the auger to move axially in the attachment 1 to pierce the seabed.

When the drilling work is completed, the attachment 1 is removed from the pile keeper 24, and instead, the pile keeper can grasp the pile, so that the pile staking work can be started immediately.

[Effect of device]

The attachment of the present invention is grasped by the pile keeper of a coastal pile driver, and the earth auger can be moved up and down inside the pile pier to pierce the hard ground, and the pile keeper can continue to grasp the pile to perform pile driving. it can. Therefore, it is possible to easily and quickly perform pile driving on hard ground at any occasion without requiring a special device, further develop the excellent characteristics of the coastal pile driver, and perform high efficiency pile driving. it can.

[Brief description of drawings]

FIG. 1 is a vertical sectional view (a) of an attachment of an embodiment of the present invention, (b) a plan view, FIG. 2 is a side view of a pile keeper equipped with the embodiment, and FIG. 3 is a side view of a coastal pile driver. , FIG. 4 is a side view of a conventional earth auger, and FIG.
FIG. 1 ... Attachment, 2 ... Earth Auger 3 ... Flange, 7 ... Claw 8 ... Spline, 20 ... Seaside Pile Driver 23 ... Movable Arm, 24 ... Pile Keeper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ichiro Okumura 2-3-2 Uchisaiwaicho, Chiyoda-ku, Tokyo Kawasaki Steel Co., Ltd. Tokyo headquarters (72) Inventor Mitsuo Sunaga 2-16-1 Kyobashi, Chuo-ku, Tokyo No. Shimizu Construction Co., Ltd. (72) Inventor Shuichiro Minami 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Creator Ryo Ogi 5 Toa Construction Industry Co., Ltd. Yonbancho, Chiyoda-ku, Tokyo In-stock company (56) References JP-A-60-156824 (JP, A) Actual development: 54-162111 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A tubular attachment to be gripped by the pile keeper of a coastal pile driving machine having a pile keeper, the tubular attachment having an outer diameter dimension to be gripped by the pile keeper, the flange being provided to prevent the pile keeper from rotating. , An earth auger is housed so as to be movable in the axial direction, and a plurality of splines that slide in the axial direction by engaging with a claw provided on the driving part body of the earth auger are projected on the inner diameter to form a hole in any direction. An earth auger attachment for a coastal pile driver, which has been made possible.