JPH0717829U - Pile driver - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a stable pile driving machine with a shorter overall leader length than conventional ones. A tubular body 2 in which a joint means 10 of an auger machine is rotatably held on an elevating frame 8 around an axis parallel to the reader 1 and an auger screw 24 or the like can be inserted.
5 and a joint member 27 fixed to the upper end of the tubular body 25 and detachably integrally connected to the head portion 24a such as the auger screw 24 fitted in the tubular body 25. The drive motor 31 of the rotary drive device 9 is arranged on the peripheral side of the tubular body 25, and the drive motor 31 and the tubular body 25 are interlocked with each other by interlocking means 33, 34, 3.
Connected by 5

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a pile driving machine equipped with an auger machine having a rotation drive device and a joint means for integrally rotatably connecting an auger screw or a head of a pile to a lifting frame that moves up and down along a leader. Regarding

[0002]

[Prior art and its problems]

 Conventionally, in this type of pile driving machine, a rotary driving device is arranged on the upper side of the auger machine, and a connecting portion such as an auger screw as a joint means is continuously provided under the rotary driving device. That is, the rotation drive device and the joint means are connected in the vertical direction (the length direction of the reader). For this reason, the leader of the pile driver must have a height (length) that is at least the length of the pile to be constructed plus the length of the auger machine, and the leader becomes longer by the length of the auger machine. The stability of the pile driver is also poor.

In view of the above problems, it is an object of the present invention to provide a pile driver having a shorter overall leader length and a higher stability than conventional ones.

[0004]

[Means for Solving the Problems]

 In the pile driver of the present invention, the joint means 10 of the auger machine is rotatably held by the elevating frame 8 about an axis parallel to the leader 1 and a tubular body 25 into which an auger screw 24 or a pile can be inserted. Is constituted by a joint member 27 fixed to the upper end of the tubular body 25 and detachably integrally connected to the auger screw 24 or the head portion 24a of the pile fitted in the tubular body 25, and A drive motor 31 of the rotary drive device 9 is arranged on the peripheral side of the tubular body 25, and the drive motor 31 and the tubular body 25 are interlocked and coupled by interlocking means 33, 34, 35. And

[0005]

EXAMPLE An example will be described with reference to the drawings. In FIG. 1 showing the entire pile driver, 1 is a leader, which is held vertically by a crawler crane 2 via a boom 3 and an arm 4 on the ground. A pair of guide rails 5 and 5 on both sides are arranged along the front surface of the reader 1. Numeral 6 is an endless chain for driving the elevating frame which is arranged in the leader 1 so as to vertically move between the guide rails 5 and 5, and is connected by a drive sprocket 7 interlocked with a chain driving motor (not shown). It is designed to drive. Reference numeral 8 denotes an elevating frame which is supported by guide rails 5 and 5 so as to be able to ascend and descend and is also vertically moved by the endless chain 6. The elevating frame 8 includes an auger machine including a rotation driving device 9 and joint means 10. Equipped with 11.

As shown in FIGS. 2 to 4, the elevating frame 8 has an inner frame 12 supported by the reader 1 so that the elevating frame 8 can move up and down, and one end of the inner frame 12 is parallel to the reader 1. It is composed of an outer frame 14 which is horizontally pivoted about a pivot pin 13 (pivot portion) which is located on the axis, and the outer frame 14 is located between these frames 12, 14. There is provided a pair of upper and lower hydraulic cylinders 15, 15 as opening / closing driving means for opening / closing over a required angle range from a closed position where the cylinder overlaps with the inner frame 12.

The inner frame 12 is vertically movably supported by the guide rails 5 and 5 on the reader 1 side through a plurality of guide rollers 16 provided on the back side thereof, and also on the back side central portion. Is connected to the endless chain 6 by a chain anchor 17 provided on the upper part and is driven up and down. A short cylindrical support frame 18 is rotatably attached to the outer frame 14 by a pivot shaft 19 (pivot portion) located in a direction (horizontal direction) orthogonal to the leader 1.

In addition, as shown in FIGS. 2 to 4, the inner frame 12 has a closed position in which 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. Connecting pins 20 for connecting the free end portions of 14 are provided at two 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 the cylinder 21 causes the pin holes 14a of the inner frame 12 to project into the pin hole 14 of the outer frame 14 to connect the frames 12 and 14, and the contraction operation of the cylinder 21 causes the pin hole 14a of the outer frame 14 to be inserted. And the outer frame 14 is 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 inserted, and an auger screw fixed to the upper end flange portion 25a of the tubular body 25 with a bolt 26 and fitted into the tubular body 25, or The head 24a of the pile 24 and a disc-shaped joint member 27 that is detachably connected to the head 24a.

A connecting cylinder portion 29 having a hexagonal hole 29 a into which a connecting head 28 of, for example, a hexagonal column protruding from the auger screw 24 or the top of the pile can be fitted is provided in the central portion of the lower surface of the joint member 27. Therefore, when connecting the joint member 27, as shown in FIG. 2, the auger screw 24 or the pile head 24a fitted in the tubular body 25 is projected to the connecting head 28 in a state of protruding upward. The joint cylinder 29 of the joint member 27 is externally fitted, and the connecting pins 30 are inserted into the pin insertion holes 28a and 29a provided in the joint head 28 and the joint cylinder 29, respectively. 27 is connected to the auger screw 24 or the head portion 24a of the pile, and then the joint member 27 is attached to the upper end flange portion 25a of the tubular body 25. Stop Lut 26. Thereby, 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 rotation drive device 9 is composed of a drive motor 31 capable of rotating in the forward and reverse directions and an interlocking step described later. The drive motor 31 is connected to the support frame 18 attached to the outer frame 14. It is installed so as to be located on the peripheral side of the tubular body 25 on the base plate 32 which is integrally or integrally formed. That is, the drive motor 31 is installed on the base plate 32 right next to the tubular body 25 and in parallel with it.

An output shaft portion 31 a of the drive motor 31 penetrates the base plate 32 and projects downward, and a sprocket 33 is provided on the output shaft portion 31 a, and the output shaft portion 31 a of the tubular body 25 is A sprocket 34 is integrally or integrally provided on the lower portion of the outer peripheral surface, and a chain 35 is hung on the both sprockets 33, 34. However, when the drive motor 31 is started, the tubular body 25 is rotated in either forward or reverse directions through the sprockets 33, 34 and the chain 35, and thereby 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 the pile driving machine having the above structure, in order to connect the auger screw 24 and the like to the joint means 10 of the auger machine 11, as described above, the auger screw 24 and the like are fitted into the tubular body 25. Then, with the head portion 24a thereof projecting upward from the tubular body 25, the connecting tubular portion 29 of the joint member 27 is externally fitted to the connecting head 28 and the connecting pin 30 is inserted, and then this joint member is inserted. The bolt 27 may be fixed to the upper end flange portion 25 a of the tubular body 25 with the bolt 26.

As described above, after integrally connecting the tubular body 25 of the joint means 10 and the auger screw 24 or the like through the joint member 27, when performing the driving operation by the auger screw 24 or the like, 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 rotating direction, so that the elevating frame 8 is descended along the reader 1 and the August screw 24 and the like are rotated. While you can drive into the ground. Incidentally, in the elevating frame 8, normally, the outer frame 14 and the inner frame 12 are superposed on each other so that both frames 12 and 14 are in a closed posture as shown in FIGS. From the pin hole 12a of the outer frame 14 into the pin hole 14 of the outer frame 14.

When changing the driving position of the auger screw 24 or the like 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, the connecting pin 20 that connects the inner and outer frames 12 and 14 of the elevating frame 8 to the closed position is pulled out from the pin hole 14 of the outer frame 14, and the outer frame 14 is rotated. After opening, the upper and lower hydraulic cylinders 15 serving as opening and closing drive means are extended to move the outer frame 14 from the closed position where the outer frame 14 overlaps with the inner frame 12 to the center of the pivot pin 13. As a result, the auger machine 11 supported by the outer frame 14 is moved in parallel with the reader 1 (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 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 joint means 10 and the auger screw 24 or the like. You may let me. 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 supported by the support frame 18 is supported. The machine 11 can be rotated 360 degrees about a pivot axis 19 that is orthogonal to the reader 1 (see FIG. 6). Therefore, for example, when the auger cooler 24 and the like are connected 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 shown in FIG. By rotating the leader 1 to such an extent that it becomes a right angle, the connecting work of the auger screw 24 and the like to the joint means 10 can be easily and easily performed on the ground. Similarly, when the auger screw 24 and the like are separated from the joint means 10 after the driving operation, the disconnecting operation can be performed easily and easily.

Further, in this pile driving machine, since the joint member 27 can be attached to and detached from the tubular body 25, the tubular body 25 can be removed by removing the joint member 27 from the tubular body 25. Therefore, only the auger machine 11 can be moved below the reader 1 without removing the auger screw 24 and the like from the reader 1.

In the embodiment described above, the elevating frame 8 is moved up and down by the up-and-down drive method using the endless chain 6 traveling along the leader 1. However, an endless chain fixed to the upper and lower ends of the leader is used. A chain drive system consisting of a pair of upper and lower guide sprockets that engage with each other on the front side of this chain and a drive sprocket that engages with the back side of the chain between the two guide sprockets, or a winch with a wire suspended from the top of the leader. It is also possible to adopt a wire suspension system that operates up and down.

[0020]

[Operation and effect of the device]

 According to the pile driving machine of the present invention, the drive motor of the rotary drive device is arranged on the peripheral side of the cylindrical body of the joint means, and the cylindrical shape is obtained by inserting the auger screw or the pile into the cylindrical body. Since the auger screw or pile can be connected by the joint member at the upper end of the body, the entire length of the auger machine can be effectively used and the length of the auger machine can be shortened. Therefore, the total length of the leader can be made shorter than that of the leader of the conventional pile driving machine, and the pile driving machine with good stability can be provided.

[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]

 DESCRIPTION OF SYMBOLS 1 Leader 5 Guide rail 8 Lifting frame 9 Rotation drive device 10 Joint means 11 Auger machine 12 Inner frame 13 Pivot pin (pivot part) 14 Outer frame 19 Pivot shaft (pivot part) 24 Auger screw or pile 25 Cylindrical Body 27 Joint member 31 Drive motor 33 Sprocket 34 Sprocket 35 Chain

Claims (1)

[Scope of utility model registration request] 1. An elevating frame which ascends and descends along a leader,
A pile driving machine equipped with a rotary driving device and a joint means for connecting the auger screw or the head of the pile so as to rotate integrally with the pile driving machine. A tubular body that is rotatably held around an axis parallel to and into which an auger screw or pile can be inserted, and an auger screw or pile that is fixed to the upper end of the tubular body and that is inserted into this tubular body. It is composed of a joint member detachably connected to the head, and a drive motor of the rotation drive device is arranged on the peripheral side of the tubular body, and the drive motor and the tubular body are connected to each other. A pile driving machine characterized by being interlockingly connected by interlocking means.