JPH08269965A - Pile having device for inner excavation and auxliary cylinder device for pile head - Google Patents

Abstract

PURPOSE: To work well with piles having different diameters by installing an exhaust earth casing in the upper part of a steel pipe, installing rotatably a hook piece which can be hitched with a ring-shaped plate fixed to the pile head on the outside of the pipe, and installing a spacer fixture in the upper part of the pipe. CONSTITUTION: In the case a pile 1 having a considerably smaller diameter than the inside diameter of a steel pipe 3 fitted with an exhaust earth hopper 5 is to be coupled with a pile hanging device, a tubular spacer 14 is inserted into the steel pipe 3, and fixation is made with a flange 12 on the spacer 14 and a stop pin 15 on the pipe 3. An aux. cylinder 2 at the top of the pile 1 is inserted into the tubing body 13 of the spacer 14, and a packing 21 at the top of the aux. cylinder 2 is interposed between the undersurface of the flange 12 and the top surface of the aux. cylinder 2. If further the pipe 2 is hung down as shown by Arrow 22, t,he bottom of a hook piece 7 touches a ring-shaped plate 6 and once rotates in the direction of Arrow 24, and the ring-shaped plate 6 is hitched with the hook piece 7. When pile 1 having a large diameter is to be inserted into the pipe 3, the spacer 14 is removed, and the top of the aux. cylinder 2 is contacted with the flange 12 of the pipe 3, and the plate 6 is hitched with the hook 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
TECHNICAL FIELD The present invention relates to a pile suspension device for use in a suspension device for piles having different diameters, and an auxiliary cylinder device for pile heads.

[0002]

2. Description of the Related Art Conventionally, in underground digging, a pile suspension device having a size corresponding to each different size of pile has been used.

[0003]

Since the pile suspension device is also provided with an earth-moving casing, it is inevitably large in size, and preparing a plurality of piles for each size of the pile not only costs a lot of production cost, It was inconvenient for storage and transportation.

[0004]

SUMMARY OF THE INVENTION However, the present invention solves the above-mentioned conventional problems by combining a pile suspension device that can be used for large-diameter piles with a spacer for small-diameter piles. In addition, the connection between the pile suspension device and the pile has a watertight structure so that all the discharged soil or the like goes to the discharged casing.

That is, according to the present invention, an earth-discharging casing having an earth-discharging passage in the center is continuously provided on an upper portion of a steel pipe that can be loosely fitted to the upper portion of the pile head, and is fixed to the pile-head outside the steel pipe. A pile suspending device for hollow excavation, characterized in that an upper portion of a hook piece that can be hooked with an annular plate is rotatably attached, and a stopper of a tubular spacer having a flange is attached to an upper portion of the steel pipe.

[0006] Further, an earth-moving casing having an earth-discharging passage in the center is continuously provided on an upper portion of a steel pipe which can be loosely fitted to the upper portion of the pile head, and an annular plate fixed to the pile-head is hung on the outside of the steel pipe. The upper part of the hook piece that can be stopped is rotatably attached, the tubular spacer having the flange is inserted into the upper part of the steel pipe, and fixed by the stopper of the steel pipe, and the annular plate has a hooking protrusion of the hook piece. A pile suspending device for medium digging, characterized in that a piece and a detent piece are fixed. Next, the hook pieces are attached symmetrically in diameter and are biased to rotate outward, and a plurality of fasteners are attached at equal intervals.

Still another invention is to fix an upper end of an annular plate fixed to a pile head to a lower end of an auxiliary cylinder fitted and connected to a steel pipe of a pile suspension device so as to communicate with a central hole of the pile. An auxiliary cylinder device for a pile head in an intermediate digging, characterized in that a packing is installed so as to be closely fitted and inserted into a steel pipe of the pile suspending device, at an intermediate portion of an outer wall of the auxiliary cylinder, wherein the packing is an air hose. Is.

In the above description, since each hook piece is urged to rotate inward, when the hook piece is lowered, the hook piece is automatically hooked.

In the above description, a rotating force acts on the pile at the time of digging (for example, since it is a screw auger), since the detent pieces are fixed on both sides of the hooking portion of the hook piece, the rotation of the pile is prevented. Can be stopped.

[0010]

According to the present invention, since the soil discharging casing is continuously provided on the upper portion of the steel pipe of a size that can be loosely fitted to the upper portion of the pile head, and the tubular spacer is removably combined into the inside of the steel pipe. The pile lifting device can be used for multiple piles with different diameters. In addition, since the anti-rotation piece is fixed to the hooking portion of the hook for suspending the pile, the pile can be stabilized during suspension.

Next, the connecting portion between the soil discharging cabinet and the pile head is made watertight,
Since the packing is inserted so that the discharged soil does not leak at least, the discharged soil is sent to the inside of the soil discharge box.

[0012]

[Embodiment 1] To an upper part of a steel pipe 3 of a size that can be loosely fitted to an auxiliary cylinder 2 connected to an upper part of a pile 1 through an annular plate 6, an earth discharging hopper 5 having a passage 4 for earth discharging in a central portion Earthen box). On the outside of the steel pipe 3, an annular plate 6 fixed to the pile head and an upper portion of a hook piece 7 that can be hooked are rotatably attached by a mounting shaft 8 and a bracket 9, and the hook piece 7 is attached to the mounting shaft 8 on the pile side. A spring 10 is attached which is biased to rotate to (Fig. 2).

Inside the upper portion of the steel pipe 3, there is inserted a tubular spacer 14 including a tubular body 11 to be inserted into the passage 4, a flange 12 at a lower end thereof, and a tubular body 13 having an upper end fixed to a lower surface of the flange 12. The stopper pin 15 of the steel pipe 3
It is fixed by (stopper).

The annular plate 6 has a hole 17 having the same diameter as the pile hole 16 on the inner side, and a hooking projection piece 19 of the hook piece 7 on the lower outer side.
Then, the anti-rotation pieces 20 (positioned on both sides of the hook portion 18 when hook pieces are hooked) are fixed.

The number of the hook pieces 7 is two, which are fixed diametrically opposite to the steel pipe 3, and the number of the retaining pins 15 is four, which are installed at equal intervals avoiding the mounting portion of the hook pieces 7. (Fig. 2).

The above embodiment shows the case where the pile diameter is considerably smaller than the inner diameter of the steel pipe 3. In this case, as shown in FIG. 1, after inserting the tubular spacer 14 and fixing the tubular spacer 14 with the flange 12 and the stop pin 15, the upper end portion (auxiliary cylinder 2) of the pile 1 is attached with the tubular spacer in the usual manner. Insert into 14.

In the above description, the auxiliary cylinder 2 is inserted into the tubular body 13, and the packing 21 at the upper end of the auxiliary cylinder 2 is interposed between the lower surface of the flange 12 and the upper end surface of the auxiliary cylinder 2. The soil discharge passage from the pile hole 16 to the inside of the pipe body 11 is configured with almost no gap.

In the above, when the steel pipe 3 having the dump hopper 5 is suspended as shown by the arrow 22, the lower end curved portion of each hook piece 7 touches the outer edge of the annular plate 6 and once opens in the direction of the arrow 23. After passing through the annular plate 6, it rotates in the direction of the arrow 24 (by the spring 10), so that the annular plate 6 and the hook piece 7 are automatically locked. Once hooked, the weight of the pile is applied, so there is no possibility that the hook piece 7 will come off from the annular plate 6 during suspension.

[0019]

[Embodiment 2] The embodiment of FIG. 3 shows a case in which a large-diameter pile 1 (concrete pile) is inserted inside a steel pipe 3. That is, the upper end of the auxiliary cylinder 2 contacts the flange 25 of the steel pipe 3. In this case, the stop pin 15 is retracted as shown by the solid line.
Therefore, since the hooking projection piece 19 of the annular plate 6 of the pile 1 and the hook piece 18 are hooked, the pile 1 can be suspended by the steel pipe 3. This example corresponds to the tubular spacer 14 from Example 1.
Since each of the operations other than the above is the same as that of the first embodiment, detailed description thereof will be omitted.

[0020]

Third Embodiment The lower end of the auxiliary cylinder 2 is fixed to the upper part of the pile 1 via the annular plate 6, and the packing holder 27 having the annular groove 26 is fixed to the outer wall of the auxiliary cylinder 2. For example, auxiliary cylinder 2
Grooves 29 are provided at the same height of the ribs 28, which are erected at equal intervals on the outer wall of the packing holder 27, and the packing holder 27 is fitted into this groove (for example, a flat semicircular shape and then connected).

The elastic member 30 is fixed in the annular groove of the packing holder 27, and the air hose 31 is provided outside the elastic member 30.
(Packing) is set with the outside protruding. The air hose 31 is kept watertight without being deformed by earth pressure, and is easily deformed when the auxiliary cylinder 2 is inserted and inserted, and is easily press-fitted between the inner hose and the inner wall of the steel pipe to have a long watertightness by elastic deformation. Need to keep. However, even if the watertightness is not perfect, it would be sufficient if the drilling mud could be stopped.

When the above embodiment is inserted into the steel pipe 3, the protruding portion of the air hose 31 is deformed and pressed against the inner wall of the steel pipe 3.
The intended purpose can be achieved.

[0023]

According to the present invention, since the same hanging device can be used regardless of the size of the pile, it is not necessary to prepare a large number of hanging devices.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view of the embodiment in which the tubular spacer is also omitted.

FIG. 4 is a sectional view of the auxiliary cylinder device.

FIG. 5 is a partial plan view of the same.

FIG. 6 is a partially enlarged cross-sectional view of the same.

[Explanation of symbols]

 1 Pile 2 Auxiliary Cylinder 3 Steel Pipe 4 Passage 5 Discharge Hopper 6 Annular Plate 7 Hook Piece 8 Mounting Shaft 9 Bracket 10 Spring 11, 13 Tubular Body 12 Flange 14 Tubular Spacer 15 Stop Pin 16 Pile Hole 17 Hole 18 Hook 19 Projection piece 20 Rotation stop piece 25 Flange

Claims (5)

[Claims] 1. An annular plate fixed to the pile head is provided on an upper part of a steel pipe of a size that can be loosely fitted to the upper part of the pile head, and an evacuation box having an evacuation path in a central part is connected to the upper part of the steel pipe. A pile suspension device for hollow excavation, characterized in that an upper part of a hook piece that can be hooked is rotatably attached, and a stopper of a tubular spacer having a flange is attached to an upper part of the steel pipe. 2. An annular plate fixed to the pile head is provided on the upper side of a steel pipe of a size that can be loosely fitted on the upper part of the pile head, and an earth discharging casing having an earth discharging passage in the central part is connected to the upper side of the steel pipe. The upper part of the hook piece that can be hooked is rotatably attached, a tubular spacer having a flange is inserted in the upper part of the steel pipe, and fixed by the fastener of the steel pipe, and the hook piece is hooked on the annular plate. A pile hoisting device for inner digging, characterized in that a protruding piece and a rotation stopping piece are fixed to each other. 3. The hook piece is attached symmetrically to the diameter and is biased to rotate outward, and a plurality of stoppers are attached at equal intervals. Pile suspension device for medium digging. 4. An upper end of an annular plate fixed to a pile head is fixed to a lower end of an auxiliary cylinder fitted and connected to a steel pipe of a pile suspension device so as to communicate with a central hole of the pile. An auxiliary cylinder device for a pile head in a middle digging, characterized in that a packing is installed in an intermediate portion of an outer wall so as to be closely inserted into the steel pipe of the pile suspension device. 5. The packing is an air hose.
Auxiliary cylinder device for pile heads in the described intermediate digging.