JPS6011959Y2 - sheet pile driver - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of a sheet pile driving machine that excavates a pre-caulked sheet pile insertion hole using an earth auger screw and press-fits a steel sheet pile into the hole using a hydraulic jacking mechanism. In addition to making the sheet pile support part of the sheet pile press-in device a rotatable mechanism, the chuck plate is arranged at a position offset from the center of the sheet pile support part by a distance approximately equal to the ear width of the sheet pile pile, and the sheet pile support part The present invention relates to a sheet pile driving machine that enables continuous press-fitting of sheet pile piles by turning approximately half a turn.

As shown in FIG. 1, the applicant previously inserted a sheet pile press-in device 3 below a cylindrical reed mast 2 into which an earth auger screw 1 was inserted, and operated the sheet pile press-in device 3 using a hydraulic motor 4. We developed a sheet pile pile that is rotatable and has an angle adjustment cylinder 6 between the catch hawk 5 and the cylindrical reed mast 2, and published it as Utility Model Application No. 1983-66615.

In FIG. 1, 7 is a chuck body, 8 is a chuck cylinder device, and 9 is an anchor chuck for driving a driven sheet pile.

When driving a sheet pile pile using the sheet pile driver, first align the central axis of the base machine (not shown) with the central axis A of the sheet pile example, and then adjust the angle, as shown in Fig. 2. Adjust the cylinder 6 to swing the reed mast 2 toward the mouth and align its center with the center A' of the sheet pile insertion hole A.

Next, the sheet pile press-fitting device 3 is rotated to align with the center of the prephased sheet pile insertion hole B, and the auger screw 1
is driven to prephase the sheet pile insertion hole A, leaving the screw in the ground as it is.

After that, the screws left in the ground and the driven sheet pile C
Using this as an anchor, the sheet pile press-in device 3 is operated to press-fit the sheet pile pile.

When the press-fitting of the sheet pile pile is completed, the auger screw 4 is pulled up, the base machine is moved back approximately one sheet pile width along the axis A, and the cylindrical reed mast 2 is moved in the direction of the arrow by operating the angle adjustment cylinder 6. While aligning the center E' of the insertion hole E to the next child side, press the sheet pile press-in device 3.
Rotate in the opposite direction and adjust and move it so that it is located above the insertion hole F that was placed on the lower side earlier.

By repeating the above operations, sheet piles G and H
Enter ... in sequence.

However, with the above-mentioned pile driving machine, even when driving sheet pile piles in a straight line, the cylindrical lead mast 2 and the sheet pile press-in device are activated each time one sheet pile pile is driven. 3 has to be adjusted in the direction of the arrow or in the direction of the arrow, and this requires a lot of effort, so there is a major drawback in that it is not possible to significantly improve work efficiency.

The present invention eliminates the above-mentioned drawbacks of this type of sheet pile driving machine, and simply retreats the cylindrical lead mast and sheet pile press-in device supported by the base machine by a fixed distance along the sheet pile driving line. The object of the present invention is to provide a sheet pile driver capable of continuously driving sheet pile piles.

Hereinafter, the details will be explained based on an embodiment of the present invention shown in FIGS. 3 to 6.

Note that the same figure numbers are used for parts common to those in FIG. 1.

Fig. 3 is a schematic side view of the sheet pile driving machine according to the present invention, Fig. 4 is an enlarged cross-sectional schematic view taken along the line A-A in Fig. 3, and Fig. 5 is a schematic view taken along the line B-B in Fig. 4. FIG.

In Figures 3 and 4, 10 is the base machine, 1
1 is a support boom, 5 is a hydraulic cylinder set catch fork, and 2 is a cylindrical lead mast.

The cylindrical lead mast 2 is made by bending a steel plate into a cylindrical shape, and a screw earth auger 1 is inserted into the inside thereof so as to be movable up and down.

An annular screw guide body 12 is fixed to the inner peripheral surface of the lower part of the cylindrical lead mast 2. A screw 13 is guided and supported by the screw guide body 12, and the self-weight of the screw earth auger 1 and the hydraulic drive of the screw 13 are fixed. It is inserted into the ground by the propulsion force.

In addition, 14 is a winch for hoisting, 15 is a sheet pile pile, 16 is an earth auger, 1 is a suspension wire, 17 is a suspension wire for the sheet pile 15, and 18 is a hydraulic mechanism storage box.

The cylindrical lead mast 2 has a universal joint 19 at its upper part.
It is rotatably supported by the support boom 11 via the support boom 11, and its lower part is rotatably connected to the tip of the catch fork 5 by a universal joint 20.

A hydraulically operated angle adjustment cylinder 6 is installed between the support piece 21 at the lower part of the cylindrical lead mast 2 and the support frame 22 pivotally supported at the tip of the catch fork 5. By operating the cylinder 6, the center of the cylindrical reed mast 2 can be moved to the left or right by a certain angle.

A sheet pile press-in device 3 is rotatably mounted on the lower front part of the cylindrical lead mast 2 by support tubes 23, 23, and the sheet pile press-in device 3 is connected to a hydraulic pressure fixed to the lower support tube 23. By rotation of the motor 4, the cylindrical lead mast 2 can be rotated in any direction using the lead mast 2 as a support shaft via a gear 24 fixed to the outer periphery of the cylindrical lead mast 2.

The sheet pile press-fitting device 3 includes a square inner frame 26 in a square outer frame 25 which is rotatably supported by the cylindrical lead mast 2 via a support tube 23 and whose upper and lower surfaces are open. The inner frame 2 is attached so as to be slidable in the vertical direction.
The rond tip of a press-fit cylinder device 28 whose base end is fixed to the outer frame 25 is fixed to the upper surface of the cylinder 6, and the inner frame 26 is pressed downward by the press-fit cylinder device 28.

A cylindrical sheet pile support cylinder 27 is inserted into the inner frame 26, and its lower part is rotatably supported by rollers 29', and its side parts are rotatably supported by rollers 29, 29... ing.

A gear 30 is formed on the outer peripheral surface of the sheet pile support cylinder 27, and a gear 32 fixed to the end of the drive shaft of a hydraulic motor 31 is engaged with the gear 30.

On one side of the inner side of the sheet pile support tube 27, a first chuck piece 33 having a carved surface on the side that contacts the sheet pile 15 is attached to the sheet pile support tube 27, as shown in FIGS. 4 and 5. It is fixed via a support member 34 at a position offset from the center 2 of the sheet pile pile 15 by a distance approximately equal to the ear width W of the sheet pile pile 15.

Further, a second chuck piece 35 is disposed opposite to the first chuck piece 35, and has a carved face on the side in contact with the sheet pile 15 and a slope on the back side. The wedge body 36 has an inclined surface that engages with the back slope of the sheet pile 1.
5 is configured to clamp and hold it.

That is, the chuck body 37 is constituted by the two chuck pieces 33 and 35 and the wedge body 36, and the sheet pile holding surface of the chuck body 37 is offset from the center of the support cylinder body 27 by approximately a distance W.

The wedge body 36 and the second chuck piece 35 are connected by a dovetail groove, and the wedge body 36 itself also slides in the vertical direction to the other side of the support cylinder 27 via the support member 38 by the dovetail groove. It is fixed freely.

Reference numeral 8 denotes a chuck cylinder device, the base end of which is fixed to the upper surface of the support cylinder 27, and the tip of the rod to the upper surface of the wedge 36.

In this embodiment, the first chuck piece 33 is attached to the support member 3.
Since it is fixed by 4, the deviation distance W from the center 2
is constant.

However, it goes without saying that the first chuck piece 33 can be adjusted and moved in the lateral direction so that sheet pile piles of different sizes can be used.

Reference numeral 39 denotes an anchor chuck device supported by a support shaft 16 at the front part of the sheet pile press-fitting device 10 so as to be movable in the left and right direction, and an anchor chuck 9 is fixed to the tip of the piston rod 40 via a support pin. , is configured to clamp the upper end of the driven sheet pile by extension of the rod 40.

Next, the operation of the sheet pile driving machine according to the present invention will be explained.

Referring to FIG. 6, it is assumed that the sheet pile pile 15a has already been driven and the sheet pile insertion holes S and S□ have also been pre-dug.

When driving the sheet pile 15b into the sheet pile insertion hole S, first the earth auger screw 1 is pulled up from the sheet pile insertion hole S1.

Then, the base machine 10 is moved back along the sheet pile row line A by approximately the width of one sheet pile, and the center of the cylindrical lead mast 2 is aligned with the center of the insertion hole S2.

Next, drive the screw earth auger 1 to insert into the insertion hole S2.
is excavated, and the screw 13 is left underground.

In addition, in parallel with the drilling of the insertion hole S2, the sheet pile pile 15b is suspended from above into the sheet pile press-in device 3, and after being held under pressure by the chuck body 37, the hydraulic motor 31 is driven to remove the sheet pile pile 15b from the support cylinder 27.
Turn about half a turn.

As a result, the sheet pile pile 15b is placed in a position as shown in FIG. 6, and after writing to connect it to the lug of the sheet pile pile 15a, the press-fit cylinder device 28 and the chuck cylinder device 8 are operated alternately. Then, the sheet pile pile 15b is driven.

The anchor chuck 9 is fixed to the upper end of the already driven sheet pile pile 15a, and the anchor chuck 9 and the screw 13 left in the ground prevent the reaction force at the time of press-fitting from being received. .

When the driving of the sheet pile pile 15b is completed, after pulling up the screw 13 and removing the anchor chuck 9, the base machine 10 is moved back by the width of one sheet pile, and the next sheet pile pile 15C is pressed in by the same operation as described above. I'll go.

As described above, in the present invention, the support cylinder 27 rotatably inserted into the sheet pile press-in device 3 is rotatable in any direction by the hydraulic motor 31, and the chuck body 37 holds the sheet pile 15 under pressure. is offset from the center of the support cylinder 27 by approximately the same distance as the selvedge width W of the sheet pile 15, so that the cylindrical lead mast 2 (i.e., the sheet pile press-fitting device 3) is moved along the sheet pile driving line by the width of one sheet pile. The sheet piles can be extremely easily erected at a predetermined position and in a predetermined attitude by simply moving the support cylinder 27 backward by approximately half a turn, and the work efficiency is greatly improved.

Moreover, by making the deflection distance W of the chuck body 37 adjustable, it is possible to use various sheet pile piles of different sizes.

Furthermore, by taking anchors from three locations: the screw 13 inserted into the soil and the driven sheet pile, lifting of the pile driving machine body is completely prevented, and the speed at which the sheet pile is pressed in can be significantly increased.

As mentioned above, the present invention has extremely high practical effects.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing the main parts of a conventional sheet pile driver, and FIG. 2 is an explanatory diagram showing the order of driving sheet piles by the conventional sheet pile driver. FIG. 3 is a side view showing an outline of the sheet pile driving machine according to the present invention, and FIG. 4 is a sectional view taken along line A-A in FIG. FIG. 5 is a sectional view taken along line BB in FIG. 4, and FIG. 6 is an explanatory diagram of the order of driving sheet piles by the sheet pile driver according to the present invention. L... Width of sheet pile pile, W... Ear width of sheet pile pile, S... Sheet pile insertion hole, A... Center of sheet pile row, 2... ...Center of the sheet pile support cylinder, 1...
... Screw earth auger, 2 ... Cylindrical lead mast, 3 ... Sheet pile press-in device, 4 ...
...Hydraulic motor, 5...Catchhawk, 6.
... Angle adjustment cylinder, 8 ... Chuck cylinder device, 9 ... Anchor chuck, 10 ... Base machine, 15 ...
Sheet pile pile, 23...Support tube, 24...Gear, 25...Outer frame, 26...Inner frame,
27...Support cylinder body, 28...Press-fit cylinder device, 29, 29'...Roller, 30.
... Gear, 31 ... Hydraulic motor, 32
... Gear, 33 ... First chuck piece, 34 ... Supporting member, 35 ... Second chuck piece, 36 ... Wedge body, 37... chuck body, 38... support member, 39...
・Anchor chuck device.

Claims (1)

[Scope of utility model registration request] A sheet pile press-in device 3 equipped with a press-fit cylinder device 28 and a chuck cylinder device 8 is attached to the lower part of the cylindrical lead mast 2 into which the screw earth auger 1 is inserted so as to be able to move up and down. In a sheet pile driving machine that supports rotatably along the outer periphery and press-fits a sheet pile pile 15 into a sheet pile insertion hole S preformed by the screw earth auger 1, a cylindrical lead mast 2 is rotatably supported. The inner frame 26 is inserted into the outer frame 25 of the supported sheet pile press-fitting device 3, and the inner frame 26 can be raised and lowered by the press-fitting cylinder device 28 disposed between the outer frame 25 and the inner frame 26, and the inner frame 2
A support cylinder 27 having a gear 30 on its outer circumferential surface is inserted into the inside of the support cylinder 27 and is rotatable via the gear 30 by a hydraulic motor 31. A chuck body 37 that presses and clamps the sheet pile pile 15 is arranged and fixed by the chuck cylinder device 8 at a position offset by W, and the sheet pile pile 15 is continuously press-fitted by rotating the support cylinder body 27 approximately half a turn. Features of sheet pile driving machine.