JPS60238517A - Excavating for driving pile - Google Patents

Abstract

PURPOSE:To raise the efficiency of operations by a method in which an annular hole of the same diameter as a supporting pile is formed in the ground by a cylindrical drill, and soil discharged from the upper part of the drill in the annular hole is scooped and discharged by a bucket to the ground surface. CONSTITUTION:An annular hole is drilled in the ground by jetting pressure wate from a jet port 12 while turning the rotary support shaft 8 of a cylindrical drill 9, and the excavated soil is scooped up by a spiral projecting blade 15. A soil discharger 16 is lowered through a wire 22, buckets 19 and 19' are opened and lowered to the upper end position of the drill 9, and the buckets 19 and 19' are closed to house soil. The soil discharged 16 is then raised to discharge the soil to the ground surface.

Description

[Detailed description of the invention] The present invention relates to an excavation method d1 for striking.

Conventionally, when drilling a vertical hole in the ground that matches the diameter and quality of the pile for the purpose of driving support piles at a construction site, etc.,
At the lower end of the spindle placed above the drilling position, the drill is drilled gradually into the ground while rotating the drill.
After excavating to a certain point, the excavated soil is scooped up with a bucket attached to the excavation drill that can be opened and closed, and then dumped onto the ground.Other methods include directly hitting the ground with a hammer that also serves as a packet. IJI overlapping horn method etc. is adopted as ``7 doji 10'', generally earth l''ril + j'F
There is something called IAi I.

However, in this conventional method, the excavation work and the earth and sand removal work cannot be carried out simultaneously, and the excavation work is
After the 7th hole is drilled, the drill of almost the same diameter becomes crowded, and since the hole diameter is covered, the drilling load of the drill becomes too much.
Also, when excavating into the ground using a bucket and a hashin, there are disadvantages such as noisy soil pollution and the inability to excavate accurately.

In this invention, C) a cylindrical drill installed at the lower end of the rotating shaft is used to make an annular hole in the ground with the same diameter as the support pile, and at the same time, sand is discharged from the inside of the annular hole from above the cylindrical drill. Excavating and tllll = 1 are simultaneous, i%-(
Moreover, the load on the excavation port 4 is reduced as much as possible, making it easy to excavate even on hard ground. An object of the present invention is to provide an excavation method for driving piles that can easily and accurately excavate a vertical hole with the same diameter and JFil length as the support pile.

If we explain the embodiment of the invention in the drawings, (A
) shows the entire excavation equipment for driving piles for carrying out the method of the present invention, and (1) shows a crawler-type running section (2) at the bottom.
), and the vehicle (1) has a support frame (3) for supporting the excavation rig (B) attached to it through a hitch (4) on either the front or the rear. d3su,
A telescopically adjustable stand (5) is vertically attached to the end of the support frame (3), and the support frame 1 is attached to the ground surface ((+)).
It supports and keeps it in place.

An excavation device (B) is installed on the support and frame 3), and the device (B) is constructed as follows. In other words, a hydraulic motor (6) is attached to the medium flame of the frame (3), and a support (7) connected to the motor (6) has a hydraulic motor (6) installed in the middle of the frame (3). A rotating support shaft (8) with an upright position is interlocked and supported, and oil is supplied to a hydraulic motor (6) from a hydraulic pump (P) mounted on a traveling vehicle (2), and the support shaft is driven by the same motor (6). The rotary support shaft (8) is configured to be rotated via the mechanism (7).

The rotational support shaft (8) is drawn in a rectangular vison shape and is a double pipe so that it can be expanded and contracted according to the excavation depth.

A cylindrical drill (9) with a hollow cylindrical shape is vertically installed at the upper end of the rotary support @ (8), and the upper end of the drill (9) is closed with an opening V to serve as an earth and sand discharge section (10). The lower end of the cylindrical drill (9) has a blade (1) with a sharp tip.
1), a large number of injection holes (12) are formed on the inclined surface of the moon body (11), and a cylindrical drill (9) is formed.
) communicates with the water supply part (13) formed in the peripheral wall body of
A water supply vibrator (14) inserted through a rotating support shaft (8) is configured to spray sweat water from an injection hole (12) via a water supply section (13). (9)' is the rotational support shaft <8
) and the cylindrical drill 9) 1 with the upper end! Shows the stay for installation.

However, a spiral protrusion (15) is formed on the inner circumferential wall of the cylindrical drill (9), which prevents earth and sand excavated by the cylindrical drill (9) from returning to the rotation of the drill. It is constructed in such a way that it rises up.

In addition, the rotary support shaft (8) is equipped with an earth removal device 16 that can be raised and lowered freely.
) is installed, the soil removal device (16) is attached to the soil with a roller (17) that is in contact with the circumferential surface of the rotating support shaft (8), and an Iζ soil removal frame (18) that supports the roller (17). ), and a packet (19) that can be opened and closed left and right below the earth removal frame (18).

(19)" and is composed of an "exhaust" frame (18).
) It rotates together with the roller (17) and (J rotating support shaft (8) and moves upward along the support shaft, and the outer periphery of the frame (18) is equipped with sliding parts such as bearings. A packet support body (20) is mounted through the J3, and the support body (20) does not rotate, regardless of the rotation of the rotational shaft (8), and only performs the bucket h (19). It regulates the left and right position of.

The buckets 1 (i9) and (19) have a substantially symmetrical bowl shape with their openings facing each other, and are expandable within the diameter of the cylindrical drill (9). Body (2
0) is supported by 1F, and a hydraulic cylinder (21) for opening and closing operations is connected.

This 1/1F device (16) is constructed so that it can be operated by a wire (22>-),
The device (1G) is a device that moves up and down between the support frame (3) and the excavation hole (11). )
can be opened and closed freely (disposed diagonally -cd'3, 1) i
It is configured to be released when the upper device (16) rises above the ground, and to be closed behind the device and move in a timed manner to cover the lower part of the heket (19), and prevents soil and sand from flowing. A packet containing items such as 19) is on the upper back.At the time of IC, JJL + Uke is a book (23).
) received 111''-, and the inclined υ
A belt conveyor (24) connected to the inclined end of one soil tray (23) is used to transport the soil to another location.

Excavation 'J device for driving piles used in the embodiment of this invention (△)
The following is a detailed explanation of the excavation method for driving piles of the present invention while explaining the operating order of the device (△). Place the cylindrical drill (9) in the position where you want to perform the
While rotating the drill (8), insert the recitation hole (12) of the same drill (9).
, J:SF "Water is injected to make a circular hole in the ground (G), and the earth and sand inside the hole cut by the circular hole is removed as the cylindrical drill (9) excavates. Due to the sinking of the cylindrical drill (9), the drill (1) to the drill (
JJI is discharged from the earth and sand discharge part (10) of the soil part of 9), and the spiral protrusion (15) inside the cylindrical drill prevents the rotation of the cylindrical drill (9). As a result, the earth and sand were forcibly removed.

Next, 1) the equipment 16) is lowered via the wire (22), the buckets 1-(19) and (19)' are opened, and the 1-O-i of the cylindrical drill (9) is :After descending to υl block, if we block packets M9) and (19)',
The 2L sand etc. taken out by JJI from the earth and sand 1/1 mountain part (10) is stored in a packet, and the earth removal device (16) is loaded as it is to add soil (to cover the earth removal). Even when working with JJI-111 equipment (1G), the cylinder 1-
Excavation work for rill (9) has been carried out for 31 consecutive years.

According to this invention, an annular hole is made by a cylindrical drill for 11 hours.
Because of this, there is less contact between the ground and the cylindrical drill blade, and the excavation load (J) is as small as possible, making it possible to perform Ii1! disc drilling with less power, greatly contributing to labor savings, and The soil removal device allows one soil excavation operation to be carried out simultaneously in parallel, greatly improving work efficiency.Furthermore, since circular drilling is performed using a cylindrical drill, there is no need for drilling
, the pressure is applied only to the annular part, and unnecessary pressure is applied to the entire undrilled stratum.There is no compaction phenomenon of the J Hano W layer in the strata in the excavation direction, making it easier to perform the drilling work. The outer circumferential surfaces of the cylinder 1 to the rill act as a coating on the inner circumferential surface of the vertical hole, and have the effect of preventing the wall surface of the vertical hole from collapsing.

[Brief explanation of drawings]

Fig. 1 is an overall side explanatory diagram of an embodiment of the method of excavating piles according to the present invention; Fig. 2 is a side view of a part of the same main part; Side view Figure 4 (, 1, Bottom view of the cylindrical drill Figure 5; Figure 2 Figure 1 Figure 6 is Figure 3 - ■ Sectional view Figure 7 is a front view of the main parts. To Fig. 8 (a) - (') is a schematic diagram showing the operation of the same embodiment (△): 1]+yt drilling rig (B): Drilling rig (g): Ground - 1 plane (G): Ground (P), Oil If pump (I+): Drill hole < 1 >: No@II garage r entrance) (2): Tongekisou village each ■ (3); Support frame 11 <4>: Hiraten (5): Stand (6); Oil ITt-ter (7): Support shaft drive 1 (8): Rotating support shaft (9): Cylindrical drill (10): J-Sand IUI mountain part (M): Blade (main (12): Chanting hole <13): Water conveyance part (1/l): Water conveyance vibration <15): Protrusion (16): JJI Dosoka (17): Roller patent applicant Nishi-Nippon Railway Co., Ltd. Agent Matsu Ken O - Part Figure 2 JIM Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1) While drilling a circular hole in the ground with the same diameter as the support pile using a cylindrical drill installed at the lower end of the rotating shaft, the earth and sand inside the circular hole discharged from the upper part of the cylindrical drill is dumped into a bucket 1-.
An excavation method for driving piles, which is characterized by scooping up the piles and placing them on the ground.