JP3350498B2 - Casing auger device and casing auger method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing auger device for press-fitting a pile or a sheet pile by digging a ground with an auger in a casing and a casing auger method for press-fitting a pile or the like with the device. The present invention relates to a casing auger device and a casing auger construction method capable of efficiently excavating hard ground with a simple configuration.

[0002]

2. Description of the Related Art A casing auger device includes an auger in a casing and excavates the ground prior to a pile press-in / draw-out machine (hereinafter referred to as a "press-fitting machine") press-fitting a cylindrical pile or sheet pile. Thereby, a pile or the like can be pressed in efficiently. In the case of a hard ground having a large press-in resistance, the above-mentioned auger combined construction method using a three-point pile driver, a replacement construction method using an all-turning device, and a water jet combined construction method is used in press-fitting.

[0003]

However, the auger device requires a dedicated crane for handling the auger device, and other conditions require the use of the three-point pile driver or the all-slewing device, which requires a large-scale machine. When using a water jet combined press-in machine which is a relatively simple press-in method, relatively large power is required,
The application range of construction was limited by the layout of large auxiliary equipment such as power sources.

An object of the present invention is to provide a casing auger apparatus and a casing auger construction method capable of efficiently excavating hard ground with a simple configuration.

[0005]

Means for Solving the Problems To solve the above-mentioned problems, a casing auger is provided which comprises an auger for excavating the ground by rotation and a casing in which the auger is provided, and excavates the ground in a hollow portion of a pile or a sheet pile. In the device, the casing includes a suspending portion for lifting the entire casing auger device, and the suspending portion is provided so as to be able to move up and down along the outer periphery of the casing within a range up to a discharging portion provided at an upper end of the casing. The casing further includes a substantially cylindrical clamp member provided with a sheet pile clamp for fixing a pile or a sheet pile, and the clamp member includes a casing chuck for fixing to a peripheral surface of the casing. Casing auger device. In the casing auger device, the casing auger device is mounted on a pile or a sheet pile to be press-fitted, and in the casing auger method of press-fitting the pile or the sheet pile with a press-fitting machine, a clamp member separate from the casing is formed by a casing chuck. Since the casing can be fixed at an arbitrary position, the casing can be dug efficiently without depending on the length of the sheet pile by adjusting the position of the casing according to the situation of the excavation. Further, by lowering the hanging portion, it becomes possible to hang the hook of the crane at a low position, so that the crane can be used for other operations as necessary in addition to handling the casing auger device.

The clamp member comprises a main frame having a sheet pile clamp, and a slide frame which advances and retreats in the axial direction with respect to the main frame by an expansion / contraction mechanism. The casing auger device
By holding and operating the casing chuck in conjunction with the expansion and contraction of the slide frame during excavation of the ground, the casing can be fed in the axial direction, so that the positioning of the auger with respect to the pile or the sheet pile, excavation and backfilling are possible. . The main frame is provided with a holding chuck for holding and holding the casing, and the casing auger device alternately holds the casing chuck and the holding chuck in accordance with the expansion and contraction of the slide frame, so that the casing has another holding force. The feed operation can be performed with respect to the pile or the sheet pile without requiring the operation. Therefore, from after the mounting of the casing auger apparatus to immediately before the lifting, the auger can be aligned with the pile or the sheet pile, excavated and pulled out without relying on the crane and without requiring modification of the press-fitting machine. The clamp member is provided with a detent for slidably fitting the casing in the axial direction thereof and maintaining the casing in a constant angular direction, so that the angular direction is maintained constant at the position where the sheet pile is clamped. Therefore, the direction of the hose connected to the auger motor and the direction of the discharge port can be fixed so as not to hinder the press-fitting operation.

[0007] By press-fitting the press-fitting machine with a temporary holder for the casing of the casing auger device,
Since the posture can be secured at the closest position without requiring a temporary storage space on the ground side, the casing auger device can be handled efficiently. The press-fitting machine can efficiently operate the auger unit and the clamp unit individually by providing a hose reel that is individually connected to the auger unit and the clamp unit of the casing auger device and press-fitting the hose reel.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a clamp member of the casing auger device of the present invention.
The clamp member 1 is composed of a cylindrical main frame 2 and a cylindrical slide frame 4 which is advanced and retracted in the axial direction by expansion and contraction mechanisms 3 and 3 using hydraulic cylinders.

The main frame 2 is provided with the above-mentioned telescopic mechanisms 3, 3
In addition, a sheet pile clamp 5 that operates to increase the diameter to fix the press-fitted sheet pile, and a holding chuck 6 that operates to reduce the diameter toward the inner peripheral side to insert a casing (not shown) and retain the outer peripheral surface thereof.
And guide mechanisms 7 for guiding the slide frame 4 in the axial direction. The holding chuck 6 has a holding force enough to temporarily hold the casing when the casing is changed.

The slide frame 4 fits slide portions 7a, 7a extending in the axial direction with the guide mechanisms 7, 7 of the main frame 2, and connects the casings with the extension mechanisms 3, 3, respectively. Chuck 8, 8 for holding the outer peripheral surface of the casing in a reduced diameter for feeding in the direction
And a groove-shaped detent 9 that fits into a projection (not shown) formed in the axial direction of the outer peripheral surface of the casing.

FIG. 2 is a side view showing a mounted state of the clamp member of FIG. 1, FIG. 3A is a sectional view taken along line AA of FIG.
(B) is a sectional view taken along line BB. The above clamp member 1
The main frame 2 includes a sheet pile clamp 5 that expands in diameter so as to be fixed to the hollow portion of the press-fitting sheet pile 12 and holding chucks 6 and 6 that reduce in diameter to insert and hold the casing 11 through the casing. The casing chucks 8, 8 which are substantially the same as the holding chucks 6, 6 are provided on the extendable slide frame 4.

More specifically, the casing chucks 8 and 8
As shown in FIG. 3A, the outer peripheral surface of the casing 11 is held 90 degrees away from the slide frame 4 so that the outer peripheral surface of the casing 11 is held by the diameter reducing operation of the internal hydraulic cylinder. Similarly, as shown in FIG. 3B, the holding chuck 6 is configured to be separated from the main frame 2 by 90 degrees so as to hold the outer peripheral surface of the casing 11 by a diameter reducing operation by hydraulic pressure.

FIG. 4 is an external view showing a press-fitting method using a casing auger device using the clamp member of FIG. 1, FIG. 5 is an enlarged view of a main part when press-fitting is completed by the press-fitting method of FIG. 4, and FIG. FIG. The casing auger device 10 is configured by inserting the clamp member 1 into the casing 11. This is mounted on the sheet pile 12 chucked by the press-fitting machine 13.

The press-fitting machine 13 includes, in addition to the press-fitting chuck 14, a hose reel 1 for winding up and down a hose.
5 and 16 and a cylindrical holder 17 for temporarily placing the casing 11 in an upright posture. One hose reel 15 is connected to the auger drive unit 19 and the other hose reel 1
Numeral 6 removably connects a hydraulic hose including a control line to the clamp member 1 and puts the hose in and out in accordance with the up and down movements of the auger drive unit 19 and the clamp member 1 respectively. The holder 17 temporarily places the casing 11 in the upright posture, thereby holding the sheet pile for press-fitting into the chuck 1.
In the step of mounting the casing auger 4, an efficient temporary placing means that does not require a storage hole or a horizontal placing space for temporarily storing the casing auger device on the ground side and does not require a posture adjustment at the nearest position. provide.

The casing 11 is provided with an auger 18 for excavation therein so as to be rotatable therein, and has an auger driving unit 19 on an upper part thereof.
A casing auger device is provided that includes a discharging section 20 and a suspending section 21 that protrudes on both sides of the casing 11 so as to be able to move up and down along the casing 11 to be hooked on a hook for lifting.

When a sheet pile is press-fitted, a press-fit sheet pile 12 such as a steel pipe is held upright on a chuck 14 of a press-fitting machine 13 and a casing 1 is inserted into a hollow portion of the press-fit sheet pile 12 via a clamp member 1.
Fix 1 The clamp member 1 includes a casing 11
The casing 11 is fixed to the press-fitted sheet pile 12 by using the large-diameter portion 11a formed at the lower end of the casing as a stopper and moving the casing 11 to the discharging portion 20. The hanging portion 21 has a movable range between the clamp member 1 and the lower end of the earth discharging portion 20. The hanging portion 21 is lowered by its own weight to be hooked on the upper end of the clamp member 1, while the lifting is performed by a crane. The casing auger device can be lifted up to the lower end of the portion 20 and hung, and the entire casing auger device can be lifted.

FIG. 7 is a press-fitting procedure diagram according to the press-fitting method of FIG. In the backfilling step at the time of completion of the press-fitting of the sheet pile P in FIG. 7A, the hollow portion of the sheet pile P is backfilled by reversing the auger 18 and the casing auger device is sent upward by the expansion and contraction operation of the clamp member 1. Operate. At this time, the casing auger device 10 can efficiently move the casing 11 upward without requiring a crane operation.
The lifting process of the casing auger device of FIG.
The hook 22 is hung on the hanging portion 21 at the low position, and the hanging portion 21 is hung on the lower end of the earth discharging portion 20 by the lifting of the crane, and the casing auger device 10 is hoisted. FIG.
In the sheet pile mounting step (c), the casing auger device 10 lifted and moved by the crane is attached to the holder 17 of the press-fitting machine 13.
And the crane is released by lowering the hanging portion 21 and removing the hook 22. Press-in machine 1 at new press-in position
3 and the sheet pile P1 lifted by using a crane is mounted on the chuck 14, and is press-fitted by the press-fitting machine 13 to a possible depth.

In the mounting step of the casing auger device shown in FIG. 7D, the casing auger device 10 temporarily placed on the holder 16 of the press-fitting machine 13 is hooked on the hanging portion 21 and the sheet pile P
Lift to attach to 1. In the press-fitting preparation process using the casing auger device shown in FIG. 7 (e), the crane is released by mounting the casing 11 of the suspended casing auger device on the sheet pile P <b> 1 with the clamp member 1, lowering the hanging portion 21 and removing the hook 22. I do. The casing 11 is positioned by the expansion and contraction operation of the clamp member 1, and the bucket 23 is held on the discharging section 20 using a crane. In the press-fitting process using the casing auger device shown in FIG. 7F, excavation is performed by the auger 18 in accordance with the expansion and contraction operation of the clamp member 1 while the earth is discharged to the bucket 23 held by the crane, and the sheet pile P1 is press-fitted. FIG. 7 (g)
In the earth discharging process, the casing auger device 10 is stopped when the sheet pile P1 reaches a predetermined press-fitting depth, the bucket 23 is moved to the earth discharging place by the crane, and the earth is discharged to release the crane.

As described above, the casing auger method using one crane can be performed by the clamp member of the present invention. Further, the present invention can be similarly applied to a press-fitting member having a hollow hole, such as a steel pipe sheet pile, a sheet pile of a PC wall, and a pile for single press-fitting using similar members.

FIG. 8 is a sectional view showing an example of clamping a large diameter sheet pile. For example, when the inner diameter of the press-fitted sheet pile 12 is large relative to the casing 11, the clamp member 25 is configured within the hollow portion dimensions of the sheet pile. In this case, even when the press-fitted sheet pile is long, the overall length of the casing can be made shorter than when the clamp member is attached to the upper end of the sheet pile.
The weight and size of the entire mechanical device can be reduced.

FIG. 9 is a sectional view showing another example of the configuration of the sheet pile clamp. The sheet pile clamp 31 has a ring-shaped fixed claw 32 having a radius for receiving the inner peripheral surface 12 a of the press-fit sheet pile 12.
And the outer peripheral surface 1 of the press-fit sheet pile 12 facing the fixed claw 32.
The movable claw 33 having a cylinder for pressing the second claw 2b is arranged at an equally dividing position. The sheet pile clamp 31 clamps the upper end of the press-fit sheet pile 12 in the same manner as described above, and a relatively large-diameter hollow hole of the fixing portion 32 makes it possible to use a large-diameter casing with good soil removal efficiency.

[0022]

The casing auger device and the casing auger method of the present invention have the following effects. In the casing auger device having the above configuration, the casing auger device is mounted on a pile or a sheet pile to be press-fitted, and in the casing auger method of press-fitting the pile or the sheet pile by a press-fitting machine, a casing and a separate clamping member are formed by a casing chuck. Since it can be fixed at an arbitrary position, excavation can be performed efficiently without depending on the length of the sheet pile by adjusting the position according to the degree of excavation. Further, since the auger is provided, the casing can be fed without the need of a crane to the lifting position when the auger is pulled out. By making the clamp member expandable and contractable, the casing chuck can be held and operated in accordance with expansion and contraction of the slide frame during excavation of the ground, so that the casing can be fed in the axial direction. Alignment,
Excavation and backfilling become possible. By providing the holding chuck on the main frame, it is possible to position the auger with respect to the press-fitting pile or the press-fitting sheet pile, excavate and pull out without requiring a crane and without modifying the press-fitting machine. Moreover, since the press-fitting reaction force is obtained by raising the auger after excavating the auger ahead of the pile or sheet pile, the load on the press-fitting machine can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a clamp member of a casing auger device of the present invention.

FIG. 2 is a side view showing a mounted state of the clamp member of FIG. 1;

3A is a sectional view taken along line AA of FIG. 2, and FIG.
-B sectional view

FIG. 4 is an external view showing a press-fitting method using a casing auger device using the clamp member of FIG. 1;

5 is an enlarged view of a main part when press-fitting is completed by the press-fitting method of FIG.

FIG. 6 is a view taken in the direction of arrow C in FIG. 5;

FIG. 7 is a press-fitting procedure diagram according to the press-fitting method shown in FIG.

FIG. 8 is a sectional view showing an example of clamping a large diameter sheet pile.

FIG. 9 is a cross-sectional view showing another configuration example of the sheet pile clamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp member 2 Main frame 3 Telescopic mechanism 4 Slide frame 5 Sheet clamp 6 Holding chuck 7 Guide mechanism 7a Slide part 8 Casing chuck 9 Detent 10 Casing auger device 11 Casing 11a Large diameter part 12 Sheet pile (pile) 13 Press-fitting machine 14 Chuck Reference Signs List 15 Auger drive hose reel 16 Clamp member drive hose reel 17 Holder 18 Auger 19 Auger drive unit 20 Discharge unit 21 Suspension unit 22 Hook 23 Bucket 25 Clamp member 31 Sheet pile clamp 32 Fixed claw 33 Movable claw P Sheet metal P1

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroaki Tauchi 3948-1, Fushida, Kochi City, Kochi Prefecture, Japan Giken Co., Ltd. (56) References JP-A-2000-2071 (JP, A) JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E21B 7/00 E21B 3/025

Claims (7)

(57) [Claims] An auger for excavating the ground by rotation;
In a casing auger device comprising a casing in which the auger is provided and excavating the ground of a hollow portion of a pile or a sheet pile, the casing includes a suspending portion for suspending the entire casing auger device, and the suspending portion is provided for the casing. A substantially cylindrical clamp member provided with a sheet pile clamp for fixing a pile or a sheet pile is separately provided in the casing so as to be able to move up and down along the outer periphery of the casing within a range up to a discharging portion provided at an upper end. The casing auger device, wherein the clamp member includes a casing chuck for fixing the clamp member to an outer peripheral surface of the casing. 2. The apparatus according to claim 1, wherein the clamp member includes a main frame having a sheet pile clamp, and a slide frame that moves in and out of the main frame in an axial direction by a telescopic mechanism. A casing chuck is disposed on the slide frame. The casing auger device according to claim 1, wherein: 3. The casing auger device according to claim 2, wherein the main frame includes a holding chuck for holding and holding the casing. 4. The casing according to claim 1, wherein the clamp member is provided with a detent for fitting to the casing so as to be slidable in the axial direction thereof and maintaining the clamp member in a fixed angular direction. Auger equipment. 5. A casing auger method comprising mounting the casing auger device according to claim 1 on a pile or a sheet pile to be press-fitted, and press-fitting the pile or sheet pile with a press-fitting machine. 6. The casing auger method according to claim 5, wherein the press-fitting machine is provided with a temporary holder for a casing of a casing auger device and press-fitted. 7. The casing auger method according to claim 5, wherein said press-fitting machine is provided with hose reels respectively connected to an auger portion and a clamp portion of a casing auger device and press-fitted.