JPH04309618A - Method for pressing steel sheet pile and chuck therefor - Google Patents

Abstract

PURPOSE:To press a steel sheet pile in desired directions using a general-purpose construction machine with hydraulic full-swing telescoping arm by pressing a simplified steel sheet pile skippingly or pressing continuously. CONSTITUTION:A telescoping and swinging arm 1 mounted on a boom for construction machinery, and a chuck 5 for pressing a steel sheet pile is provided on a telescoping and swinging inner tube of the arm in parallel approximately to the arm. Thus the steel sheet pile is chucked and, with the steel sheet pile 12 touched on a specified position and in specified direction by means of the telescoping and swinging arm, the steel sheet pile is pressed into the ground by means of a telescoping means provided in the telescoping and swinging arm.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is a method for pushing steel sheet piles, which is useful as a method of pushing in any direction using a construction machine equipped with a hydraulic full-swivel telescoping arm for fly press-in or continuous press-in of simple steel sheet piles. This is about the chuck.

0002

2. Description of the Related Art Steel sheet piles are used to prevent the sides of the dug hole from collapsing when the ground is excavated, and to protect the foundations of adjacent structures on the ground. Conventionally, simple steel sheet piles are pushed into the soil by hoisting the steel sheet piles with a crane, etc., and having a worker guide them to a predetermined position and pushing them directly into the ground with a yunbo bucket, or by using an electric vibrator suspended by the crane. Ta. When pushing steel sheet piles squarely into a narrow pit shape, the direction of the steel sheet piles changes, so lift the sheet piles from the direction that is easiest to lift while moving the construction machine.

0003

[Problems to be Solved by the Invention] Therefore, moving the heavy machine every time the direction of pushing in the steel sheet piles changes is not only time-consuming but also dangerous. Further, the excavation work performed after the steel sheet pile is pushed in requires another construction machine, such as a backhoe.

0004

[Means for Solving the Problems] The present invention is a construction machine such as a backhoe, and in particular, it is possible to efficiently perform the pushing of steel sheet piles and the subsequent excavation work simply by replacing the end attachment of the hydraulic fully rotating telescopic arm. It was developed for this purpose, and uses an arm that is attached to the boom of a construction machine to extend, contract, and rotate.The steel sheet pile is pushed almost parallel to the arm using a steel sheet pile pushing chuck installed at the tip of the arm's telescoping and rotating inner cylinder. The steel sheet pile is chucked by a steel sheet pile pushing chuck so as to be held in place, the steel sheet pile is applied to a predetermined position and in a predetermined direction by the telescopic rotating arm, and the steel sheet pile is pushed into the soil by the telescopic means provided in the telescopic rotating arm. This is a distinctive method of pushing steel sheet piles.

[0005] Further, as a chuck for steel sheet piles as a suitable attachment for use in this, a casing having a mounting means adapted to the mounting boss hole at the tip of the inner cylinder is provided,
We have developed a system that includes a steel sheet pile insertion frame and a chuck for attaching and removing the steel sheet piles, which are provided in the casing in a direction that supports the steel sheet piles almost parallel to the arm.

[0006]

[Operation] The chuck chucks the steel sheet pile parallel to the telescopic arm, so it is pushed in as the arm extends and pulled out as it shortens. Since the arm rotates in the pushing direction of the steel sheet pile, the direction of the chuck can be changed freely, making it possible to work within the reach of the arm without moving the construction machine body to the desired position.

Since the steel sheet pile insertion frame of the chuck is approximately the width of the steel sheet pile, it serves as a pushing guide, and the pushing direction is correctly regulated. Furthermore, the chuck is driven by a hydraulic cylinder, which provides a large gripping force. The chuck attachment means can be replaced with a bucket, shovel, etc., making it easy to transition to excavation work.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the steel sheet pile pushing method of the present invention and the chuck used in the method will be explained in detail based on the drawings. 1 to 3 are specific examples of steel sheet pile pushing chucks,
FIG. 4 is a side view of a construction machine with a retractable arm equipped with a chuck.

A partially cutaway front view of FIG. 1 and its A-A
As seen in FIG. 2, which is a cross-sectional view, a steel sheet pile pushing chuck 5 is attached to boss holes 3 and 4 provided at the tip of an inner cylinder 2 of a telescopic rotating arm 1, which will be described later. For installation, align the mounting holes 7 and 8 of the left and right brackets 6, and tighten the mounting pins 9 and 1.
Fixed at 0. The casing 11 of the chuck body is the inner cylinder 2
The steel sheet pile 12 extends in a direction approximately 90° to the direction of
An insertion frame 13 is formed, and the base of the chuck cylinder 14 is fixed with a mounting pin 15. Chuck cylinder 1
One advance/retreat block 16a of a chuck 16 for attaching and detaching steel sheet piles is fixed to the tip of the rod 4 with a pin 17, and the other receiving block 16b is fixed to the insertion frame 13. Recessed grooves corresponding to the longitudinal protrusions of the steel sheet piles 12 are provided in these advancing/retracting blocks 16a and receiving blocks 16b.

As shown in FIG. 4, the telescopic swing arm 1 to which such a steel sheet pile pushing chuck 5 is attached has a mounting boss hole 21a for mounting on the boom 20 of a backhoe;
It has an attachment boss hole 21b for attaching to the arm cylinder 22, and can be installed and used in any commercially available backhoe regardless of model. The structure of this telescopic swing arm 1 includes a cylindrical bracket 23 having the mounting boss holes 21a and 21b on the base side, an outer cylinder 24 provided on the cylindrical bracket 23 via a swing bearing 25, and this outer cylinder. 24 and an inner cylinder 2 to which a steel sheet pile pushing chuck 5 is attached. Expansion and contraction are performed by a cylinder 27 whose base side is provided inside the cylindrical bracket 23. Further, the rotation is caused by the rotation of the outer cylinder 24 and the inner cylinder 2 part by a hydraulic motor 26 fixed to the cylindrical bracket 23 side of the swing bearing 25 part.

When pushing steel sheet piles into construction, the steel sheet piles 12 are chucked by the steel sheet pile pushing chuck 5 which is held almost parallel to the arm, and the steel sheet piles 12 are chucked by the telescopic rotating arm 1.
2 at a predetermined position in a predetermined direction, and a cylinder serving as a telescoping means provided in the telescoping swing arm is operated to push the steel sheet pile into the soil.

Effects of the Invention As described above, the present invention provides a steel sheet pile pushing chuck on a telescopic and rotating arm attached to the boom of a general-purpose construction machine. can be pushed into the soil. The push-in is not done by tilting the boom of the construction machine, but by pushing in as the arm extends and pulling out as it shortens, thereby preventing damage to the boom, etc. Also,
Since the arm is rotatable, the direction of the chuck can be changed freely, and work can be done within the reach of the arm without moving the construction machine to the desired position.Furthermore,
The chuck can be replaced with a bucket, shovel, etc., making it easy to transition to excavation work and improving work efficiency.

[Brief explanation of drawings]

[Figure 1] Partially cutaway front view of steel sheet pile pushing chuck

[Figure 2]
A-A sectional view in Figure 1

[Figure 3] BB sectional view in Figure 2

[Figure 4] Side view showing the state attached to the telescopic arm

[Explanation of symbols]

1 Telescopic swivel arm 2 Inner cylinder 3 Boss hole 4 Boss hole 5　Steel sheet pile push chuck 6 Bracket 7 Mounting hole 8 Mounting hole 9 Mounting pin 10 Mounting pin 11 Chuck body casing 12 Steel sheet piles 13 Steel sheet pile insertion frame 14 Cylinder for chuck 16 Detachable chuck 20 Backhoe boom 22 Arm cylinder 23 Tubular bracket 24 Outer cylinder 25 Swivel bearing 26 Hydraulic motor

Claims (2)

[Claims] Claim 1: A telescopic and rotating arm is attached to the boom of a construction machine, and a steel sheet pile pushing chuck is provided to hold the arm substantially parallel to the telescopically rotating inner cylinder of the arm, thereby chucking the steel sheet pile. A steel sheet pile pushing method characterized in that the steel sheet pile is applied to a predetermined position and in a predetermined direction by the telescopic turning arm, and the steel sheet pile is pushed into the soil by a telescopic means provided in the telescopic turning arm. [Claim 2] An attachment that is attached to the tip of an inner cylinder of a telescopic swing arm attached to a boom of a construction machine,
A casing having mounting means that fits into the mounting boss hole at the tip of the inner cylinder is provided, and a steel sheet pile insertion frame and a chuck for attaching and detaching the steel sheet pile are provided in a direction that supports the steel sheet pile approximately parallel to the arm with respect to the casing. A steel sheet pile push chuck is provided.