JPH04277219A - Pile driving machine for soil pile - Google Patents

Abstract

PURPOSE:To perform digging and insertion of a core member linearly in order by means of pile driving machine for soil pile without causing a digging blade and the core member to come into contact with each other. CONSTITUTION:In a soil pile driving machine which comprises three digging rods 8 rotatably and ascendably/descendably installed to a leader 4 erected on a running vehicle 2, the digging blade l0a of the digging rod 8 on one side in the direction in which the three rods are arranged side by side is formed with a diameter smaller than that of the digging blade 10b on the other side. When a smaller diameter dug hole 10a is dug while overlapping a large diameter dug hole 12c on the end, the smaller diameter dug hole 10a is dug while being apart from an H section steel previously inserted therein so as to avoid mutual contact.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is characterized in that three or more drilling rods each having a cutting blade are arranged side by side, and each drilling rod is mounted on a leader installed on a support base so as to be able to rotate and move up and down. Regarding a pile driver for soil piles.

0002

2. Description of the Related Art In a conventional soil pile pile driving machine, for example, in the case of a three-axis type, as shown in the plan view of the working state in FIG.
The preceding units 01 and 02 are excavated, and from the viewpoint of construction efficiency, a core material 03 such as H steel is inserted into the intermediate excavated holes 01a and 02a of the first and second preceding units 01 and 02, respectively. Then, the first and second preceding units 01, 02 are connected between the adjacent first and second preceding units 01, 02.
The trailing unit 04 is excavated with the excavated holes 01b and 02b at the ends of the 02 overlapped on both sides.

[0003] When performing pile driving work using a conventional soil pile driving machine, first, the first preceding unit 01
After excavating, move the soil pile pile driver to excavate the second preceding unit 02, and at the same time, lift the core material 03 into the intermediate excavation hole 01a of the first preceding unit 01 using a crane or the like. Afterwards, move the soil pile pile driver from the excavation position relative to the second preceding unit 02 and evacuate it, and in that state insert the core material into the intermediate excavation hole 02a of the second preceding unit 02. 03 is suspended and inserted using a crane, etc., and then the pile driver for soil piles is moved to the middle between the first preceding unit 01 and the second preceding unit 02, and the following unit 04 is excavated, and the pile driver for soil piles is excavated. After moving the pile driver, follow unit 04
The core material 03 is suspended and inserted into the excavated hole using a crane or the like.

0004

[Problems to be Solved by the Invention] However, after drilling the second preceding unit 02, the intermediate drilling hole 02
When inserting core material 03 into A, you must move the soil pile pile driver to a place where it will not interfere with the core material insertion work, and after completing the insertion work, In order to excavate the row unit 04, the soil pile driver must be moved to the middle between the first preceding unit 01 and the second preceding unit 02, and in a series of operations, the soil pile driving machine must be moved Since it is necessary to move the pile driver back and forth, the amount of movement of the soil pile pile driver increases, which has the disadvantage of reducing work efficiency. Particularly, in a work site with a narrow site, the position to which the soil pile pile driver can be retreated is likely to be restricted, further reducing work efficiency.

[0005] Therefore, it has been considered to carry out excavation using a soil pile pile driver and inserting the core material in linear order, but when excavating an adjacent position, the excavation blade at the end is inserted first. This had the drawback that the excavation work could not be carried out smoothly, such as getting close to the core material inserted into the excavated borehole and sometimes accidentally touching it, damaging the excavation blade.

[0006] The present invention was made in view of the above circumstances, and it is possible to perform excavation by a pile driver for soil piles and insertion of the core material in a straight line without bringing the excavation blade into contact with the core material. An object of the present invention is to provide a pile driver for soil piles that can perform the following steps in sequence.

[0007]

[Means for Solving the Problems] In order to achieve the above-mentioned objects, the present invention has three or more drilling rods each equipped with a drilling blade arranged side by side on a leader set upright on a support base. In a soil pile pile driving machine in which each excavation rod is installed so that it can be rotated and moved up and down, the excavation blade of the excavation rod at one end in the juxtaposition direction is connected to the excavation blade of the excavation rod at the other end in the juxtaposition direction. Constructed to have a smaller diameter than the excavating blade body.

[0008]

[Function] According to the structure of the pile driver for soil piles of the present invention, as shown in the plan view of the working state in FIG. Core material (H steel) for all drilled holes 12a and 12b except for
11, and then overlap the small-diameter drilling blade 10a in the large-diameter drilling hole 12c, and continue drilling with the small-diameter drilling blade 10a kept away from the core material (H steel) 11 inserted first. can do.

[0009]

[Example] Figure 1 is an overall side view of a pile driver for soil piles.
FIG. 2 is an overall front view, in which a mast 3 is erected on a traveling vehicle body 2 as a support base equipped with a crawler type traveling device 1, a leader 4 is provided on the mast 3, and an auger machine is attached to the leader 4. 5 is provided to be movable up and down, and the auger machine 5 and a winch 6 provided on the traveling vehicle body 2 are interlocked and connected via a hanging wire 7.

In the auger machine 5, three drilling rods 8 are arranged in parallel so as to be rotatable, and these drilling rods 8 slide on a support block 9 provided on the lower side of the leader 4. and rotatably held.

As shown in the bottom view of the main part of FIG. 2, the excavating rods 8 have first and second rods whose diameters increase in order from one end to the other end in the juxtaposed direction. 2 and 3rd excavation blade bodies 10a, 10b, and 10c are provided.

With the above configuration, as shown in the plan view of the working state in FIG. 4, the excavation by the soil pile pile driver and the insertion of the H steel 11 as a core material can be carried out linearly and sequentially. This will be explained in detail next.

That is, first, as shown in FIG. 4(a), first, first,
After digging the second and third excavated holes 12a, 12b, and 12c all at once and moving the soil pile pile driver to the next adjacent excavation position, The H steel 11 is inserted into each of the first and second excavated holes 12a and 12b.

Next, as shown in FIG. 4(b), the small-diameter first drilling blade 10a is overlapped with the large-diameter third drilling hole 12c in which the H steel 11 is not inserted, and the second and After drilling the third excavation holes 12b and 12c and moving the soil pile pile driver to the next adjacent excavation position in the same manner as described above,
The first and second drilling holes except for the third drilling hole 12c, which has the largest diameter.
The H steel 11 is inserted into each of the excavated holes 12a and 12b.

Furthermore, as shown in FIG. 4(c), a third excavated hole 1 with a large diameter in which the H steel 11 is not inserted is opened in the same manner as described above.
2c with the first small-diameter excavation blade 10a, excavate the second and third excavation holes 12b and 12c, move the soil pile pile driver to the next adjacent excavation position, and then The H steel 11 is inserted into each of the first and second drill holes 12a and 12b excluding the third drill hole 12c.

By repeating these operations, the small-diameter first excavating blade 10a is inserted first into the H steel 11.
The excavation with the soil pile pile driver and the insertion of the H steel 11 are carried out in linear order while keeping the soil pile driver away from the pile. Even when excavating a corner part, the first excavating blade 10a with a small diameter is inserted first into the H steel 11.
It can be excavated away from the ground.

In the above embodiment, three excavating blade bodies 10a,
The diameters of the excavating blades 10b and 10c are made to be small, medium, and large in order, but in the present invention, only the first excavating blade 10a is configured to have a small diameter, and the other second and third excavating blades 10b, 10c
It is also possible to configure the diameters to be the same.

The core material to be inserted into the drill holes 12a, 12b, and 12c is not limited to the above-mentioned H steel, but various shapes such as I-shaped steel and cross steel can be used.

The soil pile driving machine of the present invention includes:
The present invention is applicable not only to a type having three digging rods 8 but also to a type having four or more digging rods 8.

The supporting stand of the soil pile pile driving machine of the present invention may be a traveling vehicle body equipped with a tire-type traveling device.

[0021]

Effects of the Invention According to the pile driver for soil piles of the present invention, when excavating a large-diameter excavation hole with overlapping small-diameter excavation blades, the core is inserted with the small-diameter excavation blade first. Since it is possible to excavate away from the material, it is possible to avoid contact of the small-diameter excavating blade with the core material during excavation, and it is possible to perform excavation with a pile driver for soil piles without contact between the excavating blade and the core material. The core material can be inserted in a linear manner,
Since there is no need to move the soil pile pile driver a large distance and retreat to insert the core material, the amount of movement of the soil pile pile driver is small, and the labor required for moving it can be saved and work efficiency can be improved. became. In particular, since the amount of movement of the pile driver for soil piles is small, work can now be carried out efficiently even at work sites with narrow sites.

[Brief explanation of the drawing]

FIG. 1 is a side view of a pile driver for soil piles.

FIG. 2 is a front view of a pile driver for soil piles.

FIG. 3 is a bottom view of main parts.

FIG. 4 is a plan view showing a working state.

FIG. 5 is a plan view showing the working state of a conventional example.

[Explanation of symbols]

2... Traveling vehicle body as a support base 4...Leader 8...Drilling rod 10a...first excavation blade body 10b...first excavation blade body 10c...first excavation blade body

Claims (1)

[Claims] [Claim 1] A pile driver for soil piles, in which three or more digging rods each having a digging blade are arranged in parallel, and each of the digging rods is mounted on a leader set up on a support base so as to be able to drive and rotate and move up and down. , a pile driving for soil piles, characterized in that the excavating blade of the excavating rod at one end in the juxtaposition direction is configured to have a smaller diameter than the excavating blade of the excavating rod at the other end in the juxtaposed direction. Machine.