JP2524084B2 - Pile driver - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile driver equipped with an auger machine on a lifting frame that moves up and down along a leader.

[0002]

2. Description of the Related Art In this type of pile driving machine, an auger screw or a pile is attached to a leader fixed in a vertical position in parallel with the leader via the auger machine. In order to change the driving position, it is necessary to rotate the leader itself, so that it takes a lot of trouble to rotate the leader.

SUMMARY OF THE INVENTION The present invention provides a pile driver that can easily change the position of the auger screw or the like without changing the leader without changing the driving position of the auger screw. To aim.

[0004]

In the pile driver according to claim 1 of the present invention, an elevating frame 8 is supported by an inner frame 12 which is supported by a reader 1 so that the elevating frame 8 can move up and down.
And an auger machine 11 installed on the outer frame 14 which is pivotally attached to one end of the outer frame 14 so as to be horizontally rotatable about an axis portion 13 parallel to the reader 1. , This outer frame 14 to the inner frame 12
An opening / closing drive means 15 for driving the opening / closing over a required angle range from a closed position where the auger machine 11 overlaps is provided .
This auger machine 11 is installed on the outer frame 14 where the
To enable rotation around the axis orthogonal to the reader 1.
It is characterized in that a pivotal attachment portion 19 is provided .

[0005]

[0006]

EXAMPLES Examples will be described with reference to the drawings.
In FIG. 1 showing the whole of the pile driver, 1 is a leader, which is held vertically by a crawler crane 2 via a boom 3 and an arm 4, and a pair of guide rails 5 on both sides along the front surface of the leader 1. 5 are provided. 6 is an endless chain for driving the elevating frame, which is provided in the reader 1 so as to travel vertically between the guide rails 5 and 5.
The drive sprocket 7 is linked to a chain drive motor (not shown) to drive the vehicle. Reference numeral 8 denotes an elevating frame which is supported by the guide rails 5 and 5 so as to be able to ascend and descend and is vertically moved by the endless chain 6. The elevating frame 8 is equipped with an auger machine 11 including a rotation driving device 9 and joint means 10. Has been done.

As shown in FIGS. 2 to 4, the elevating frame 8 includes an inner frame 12 supported by the reader 1 so that the elevating frame 8 can be moved up and down.
And an outer frame 14 that is pivotally mounted horizontally about a pivot pin 13 (pivot portion) located on an axis parallel to the outer frame. A pair of upper and lower hydraulic cylinders 15, 15 serving as opening / closing driving means for opening / closing driving the frame 14 in a required angle range from a closed position where the frame 14 overlaps the inner frame 12 are provided.

The inner frame 12 has a reader 1 through a plurality of guide rollers 16 provided on the back side thereof.
It is supported by the side guide rails 5 and 5 so as to be able to move up and down, and is also connected to the endless chain 6 by a chain anchor 17 also provided at the center portion on the back side and driven up and down. A short cylindrical support frame 18 is pivotally attached to the outer frame 14 by a pivot shaft 19 (pivot portion) located in a direction (horizontal direction) orthogonal to the reader 1.

In addition, as shown in FIGS. 2 to 4, the outer frame 14 is housed in the inner frame 12 and overlapped with the other end of the inner frame 12 and the outer frame 14 in the closed position. 3, connecting pins 20 for connecting the free ends of the connecting pins 20 are provided at upper and lower positions, and each connecting pin 20 is interlockingly connected to an air cylinder 21 via a link mechanism 22 as shown in FIG. The extension operation of 21 causes the inner frame 12 to project from the pin hole 12a into the pin hole 14 of the outer frame 14 so that both frames 12, 14
The outer frame 14 is disengaged from the pin hole 14a of the outer frame 14 by the contraction operation of the cylinder 21.
Is designed to be released.

As shown in FIG. 2, the joint means 10 is rotatably fitted and held to the short cylindrical support frame 18 provided on the outer frame 14 of the elevating frame 8 via a bearing 23. A cylindrical tubular body 25 into which the auger screw 24 or a pile can be fitted, and an auger screw or pile 24 fixed to the upper end flange portion 25a of the tubular body 25 with a bolt 26 and fitted into the tubular body 25. And a disk-shaped joint member 27 detachably connected to the head 24a.

At the center of the lower surface of the joint member 27, a hexagonal hole 2 into which an auger screw 24 or a connecting head 28, for example, a hexagonal columnar projectingly provided on the top of the pile, can be fitted.
A connecting cylinder portion 29 having 9a is provided so as to project. Therefore, when connecting the joint member 27, as shown in FIG.
With the auger screw 24 or the head portion 24a of the pile inserted into the tubular body 25 protruding upward, the connecting cylinder portion 29 of the joint member 27 is externally fitted to the connecting head 28 thereof.
The connection pins 3 are respectively inserted into the pin insertion holes 28a and 29a provided in the connection head 28 and the connection tube portion 29, respectively.
The joint member 27 is connected to the auger screw 24 or the head portion 24a of the pile by inserting 0, and then the joint member 27 is fixed to the upper end flange portion 25a of the tubular body 25 with the bolt 26. As a result, the tubular body 25 and the auger screw 24 or the pile are integrally connected via the joint member 27.

On the other hand, the rotary drive unit 9 comprises a forward / reverse rotatable drive motor 31 and interlocking means described later, and the drive motor 31 is integrated with the support frame 18 attached to the outer frame 14. Alternatively, it is installed so as to be located on the peripheral side of the cylindrical body 25 on the integrally formed base plate 32. That is, the drive motor 3
1 is a base plate 32 right next to the tubular body 25 so as to be in parallel with it.
It is installed on top.

The output shaft 31a of the drive motor 31 penetrates through the base plate 32 and projects downward, and the output shaft 31a is provided with a sprocket 33 and the outer periphery of the tubular body 25. Sprocket 3 at the bottom of the surface
4 is integrally or integrally provided, and a chain 35 is hung on both sprockets 33 and 34. Then, when the drive motor 31 is activated, the sprocket 33,
The tubular body 25 is rotated in either forward or reverse directions through the chain 34 and the chain 35, whereby the auger screw 24 or the pile is rotationally driven. The sprockets 33 and 34 and the chain 35 constitute interlocking means of the rotary drive device 9.
In the figure, 36 is a tension sprocket. The interlocking means is not limited to such a sprocket / chain mechanism, but may be a gear mechanism or any other suitable mechanism.

In order to connect the auger screw 24 and the like to the joint means 10 of the auger machine 11 in the pile driving machine having the above structure, the auger screw 24 and the like are fitted into the tubular body 25 as described above. And its head 2
4a is projected upward from the tubular body 25, the connecting tubular portion 29 of the joint member 27 is externally fitted to the connecting head 28, the connecting pin 30 is inserted, and then the joint member 27 is placed in the tubular body. Bolt 2 to the upper flange portion 25a of 25
6 Stop.

After the tubular body 25 of the joint means 10 and the auger screw 24 or the like are integrally connected through the joint member 27 as described above, when the driving operation by the auger screw 24 or the like is performed, The endless chain 6 for driving the elevating frame is driven to descend, and the rotation driving device 9 is driven to start in the rotational direction, so that the elevating frame 8 is descended along the reader 1 while rotating the auger screw 24 and the like. You can drive inside. The lifting frame 8 is
Usually, the outer frame 14 is overlapped with the inner frame 12 so that both frames 12 and 14 are in the closed position as shown in FIGS. 3 and 4, and the coupling pin 20 is moved from the pin hole 12a of the inner frame 12 to the pin of the outer frame 14. Plunge into the hole 14.

When the driving position of the auger screw 24 or the like is changed during the driving operation as described above, the auger machine 11 can be moved with the leader 1 fixed at the initial position. That is, in such a case, both the inner and outer frames 12, 14 of the elevating frame 8
The connecting pin 20 that connects the outer frame 14 to the closed position is pulled out from the pin hole 14 of the outer frame 14,
After the upper and lower hydraulic cylinders 15 serving as opening and closing drive means are extended, the outer frame 14 is pivoted from the closed position where the outer frame 14 overlaps with the inner frame 12 as shown in FIG. Leader 1
The outer frame 1 is opened in parallel with
The auger machine 11 supported on the 4 side moves (see FIG. 5 or FIG. 6).

Therefore, the outer frame 14 is fixed to the inner frame 12 by operating the hydraulic cylinder 15 so that the joint means 10 of the auger machine 11 comes to a required driving position and stopping it at that position. The joint means 10 is located directly above the driving position. In this case, the auger screw 24 or the like may be connected to the joint means 10 of the auger machine 11 to rotate the outer frame 14 in a suspended state, or the outer frame 14 may be rotated in a state of being separated from the auger screw 24 or the like from the joint means 10. May be. The outer frame 14 can rotate with respect to the inner frame 12 within an opening angle range of 140 to 150 degrees.

Further, in this pile driving machine, since the support frame 18 is pivotally attached to the outer frame 14 by the pivot shaft 19 orthogonal to the leader 1, the auger machine supported by the support frame 18 is provided. 11 is a pivotal axis 1 orthogonal to the leader 1.
It can be rotated 360 degrees about 9 (see FIG. 6). Therefore, for example, when connecting the auger screw 24 and the like to the joint means 10 of the auger machine 11 before the driving operation, the elevating frame 8 is lowered to the lower part of the reader 1 and the auger machine 11 is moved as shown in FIG. Further, by rotating the leader 1 to such an extent that it becomes a right angle, the work of connecting the auger screw 24 and the like to the joint means 10 can be easily and easily performed on the ground. Also, when the auger screw 24 and the like are separated from the joint means 10 after the driving operation, the separating operation can be performed easily and easily.

Further, in the pile driving machine of this embodiment, since the joint member 27 is attachable to and detachable from the tubular body 25,
By removing the joint member 27 from the tubular body 25, the tubular body 25 can be moved with respect to the auger screw 24 and the like.
Only the auger machine 11 can be moved below the reader 1 without being removed.

In the embodiment described above, the lifting frame 8
In order to move up and down, an up-and-down drive system using an endless chain 6 that runs along the leader 1 was adopted. However, an end chain fixed to the upper and lower ends of the leader, a pair of upper and lower guide sprockets engaged on the front side of this chain, and A chain drive system consisting of a drive sprocket located between the two guide sprockets and engaged on the back side of the chain, or a wire suspension system in which a wire is suspended from the top of the leader and lifted by a winch can be employed.

[0021]

With the pile driving machine according to the first aspect of the present invention, the outer frame of the elevating frame is horizontally rotated over the required angle range from the closed position where it overlaps with the inner frame by operating the opening / closing drive means. can do.
With the horizontal rotation of the outer frame, the auger machine can horizontally rotate in parallel with the reader. Therefore, if the driving position of the auger screw or pile connected to the auger machine is changed according to the needs of the work, only the auger machine can be easily moved to the required position without rotating the leader, As a result, it is possible to improve work efficiency.

According to the pile driving machine of the first aspect , it is possible to rotate the auger machine by 360 degrees about the pivot axis orthogonal to the leader. Therefore, when connecting the auger screw or the like to the auger machine, lower the elevating frame to the lower part of the leader and rotate the auger machine to a degree, for example, at a right angle to the auger machine. You can easily and easily connect the auger screw etc. near the ground. Similarly, when the auger screw or the like is cut off from the auger machine, the cutting operation can be performed easily and easily.

[Brief description of drawings]

FIG. 1 is an overall schematic side view of a pile driver showing an embodiment of the present invention.

FIG. 2 is a partially cross-sectional enlarged side view of a lifting frame and an auger machine.

FIG. 3 is an enlarged front view of a lifting frame and an auger machine.

4 is a cross-sectional view taken along the line AA of FIG. 3, showing a state in which the lifting frame is in a closed position.

5 is a view similar to FIG. 4 showing a state in which the lifting frame is opened.

FIG. 6 is a schematic perspective view showing an auger machine and an open / close frame.

[Explanation of symbols]

 1 Leader 5 Guide Rail 8 Lifting Frame 9 Rotational Drive Device 10 Joint Means 11 Auger Machine 12 Inner Frame 13 Pivot Pin (Pivot Attachment) 14 Outer Frame 15 Air Cylinder (Opening / Closing Drive Means) 19 Pivot Shaft (Pivot Attachment) 24 Auger screw 31 Drive motor

Claims (1)

(57) [Claims] 1. A pile driving machine comprising an auger machine mounted on an elevating frame that moves up and down along a leader, and an inner frame for supporting the elevating frame so that the leader can move up and down, and one side end of the inner frame. The outer frame is pivotally mounted so as to be horizontally rotatable about a pivotal part on an axis parallel to the leader, and the auger machine is installed on the outer frame, and the outer frame is defined as an inner frame. Opening and closing drive means for opening and closing over the required angle range from the closed position where it overlaps, and installing the auger machine
This auger machine should be orthogonal to the reader on the outer frame.
It is equipped with a pivoting part to make it rotatable about the axis
A pile driver that is characterized by that .