JP2913630B2 - 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 driving machine for driving a ready-made pile or the like, and in particular, preliminarily digging an installation place of a pile with an earth auger, and inserting a ready-made pile or the like into it. It relates to a pile driver driven by a hammer or the like.

[0002]

2. Description of the Related Art A pile driver, known as a pile driver, is configured such that a hammer, an earth auger and the like can be mounted on a leader, which is a vertical guide mechanism, so as to be movable up and down. Recently, the foundation work has become large-scale with the rise of buildings, but in order to cope with such a situation, the size of the pile driver has been increased, and the length of the leader has been reduced to several tens of meters. Reach.

In such a pile driving machine, first, an earth auger is mounted on a leader, and then a hydraulic motor mounted on the head of the auger is driven to rotate an auger screw to excavate a hole at a predetermined ground position. I do.

In excavation, for example, the earth auger is gradually lowered while winding down a winch installed on a crawler crane.

After the excavation, the above-mentioned winch is wound up, the earth auger is pulled out from the hole, and a predetermined pile is inserted instead.

[0006] Next, a predetermined hammer is attached to the reader, and the stake is driven by the hammer.

[0007]

SUMMARY OF THE INVENTION Such a pile driver is
When work is performed in a place with few obstacles, high workability and quietness are exhibited, which is an extremely effective method. However, workability may not be expected in a predetermined construction place.

For example, a heavy crawler crane or a truck crane cannot be put in a place where many tracks are laid, and even if such a problem can be solved by a gantry or the like, an overhead wire and a boom Is a fatal problem in terms of work efficiency.

[0009] In particular, when the stakeout location is near a commercial railway line, the work is limited to the midnight hours when the train does not pass, and not only the workability of the stakeout itself but also its preparation In addition, prompt removal is essential.

Conventionally, there have been some excavators in which an auger is mounted on a bogie that can travel on a track, but there are still excavators that have both an excavating function and a pile driving function and can perform a pile driving operation efficiently. Without, its development was awaited.

The present invention has been made in consideration of the above circumstances, and has as its object to provide a small and highly maneuverable pile driving machine capable of driving a relatively short pile efficiently.

[0012]

In order to achieve the above object, a pile driving machine according to the present invention has a lower traveling body having a switchable road surface traveling mechanism and a track traveling mechanism. The upper revolving unit is pivotally attached, and a pile driving mechanism in which an auger and a hammer are attached to the leader so as to be vertically movable is rotatably attached to the upper revolving unit.
A pair of hydraulic mechanisms capable of raising and lowering the auger and the hammer are provided in the reader.

Further, in the pile driving machine of the present invention, a predetermined upper revolving unit is rotatably mounted on a lower traveling unit having a road surface traveling mechanism and a track traveling mechanism which are switchably provided, and an auger and a hammer are vertically movable on a leader. And a pile driving mechanism attached to the upper traveling body is rotatably mounted on the upper traveling body, and the lower traveling body is provided with traversing wheels.

[0014]

[0015]

When a pile driving machine of the present invention is used for driving a pile in an area where a large number of tracks are laid, for example, the lower traveling body is first moved to a predetermined pile driving place while appropriately switching the traveling mechanism.
That is, the vehicle travels on a road surface such as a road by activating the road traveling mechanism of the lower traveling body, and switches on the track to the track traveling mechanism.

After moving to a predetermined pile driving place, a pile driving operation is started.

First, if necessary, the upper swing body is swiveled with respect to the lower traveling body, and a pile driving mechanism rotatably attached to, for example, the boom tip of the upper swing body is swiveled with respect to the boom. So that the auger is above the driving position of the pile.

Next, while gradually lowering the auger, a hydraulic motor provided at the top of the auger is operated to rotate the auger screw and excavate a hole at the driving position.

After the excavation is completed, the auger is raised and pulled out of the hole.

Next, the turning operation of the upper revolving unit and the turning operation of the pile driving mechanism are appropriately performed as necessary to release the auger to the side of the hole, and the temporarily placed pile is suspended and built in the hole. Put in.

Next, the turning operation of the upper turning body and the turning operation of the pile driving mechanism are appropriately performed, and the hammer attached to the leader is moved above the pile.

Finally, the hammer is dropped and the pile is driven.

When a pair of hydraulic mechanisms capable of raising and lowering the above-mentioned auger and hammer are provided in the reader, the auger,
The lifting and lowering of the hammer is performed by a dedicated hydraulic mechanism. In such a configuration, it is not necessary to provide a winch or the like for raising and lowering in the upper rotating body, and no wire or the like is interposed between the pile driving mechanism and the upper rotating body.

When the lower traveling body is provided with a traversing wheel, a predetermined erection rail is arranged in a direction perpendicular to the track,
Next, if the traversing wheel is placed on the erection rail, the pile driver of the present invention can be easily moved laterally.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the pile driver according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of the pile driving machine 1 of the present embodiment.

As can be seen from the figure, the pile driving machine 1 of this embodiment
The upper revolving superstructure 3 is attached to the lower traveling body 2 so as to be freely rotatable.

The lower traveling body 2 is provided with a tire 7 as a road traveling mechanism and wheels 8 as a track traveling mechanism. When the wheels 8 are flipped upward, the tires 7 contact the ground and can travel on the road. When the wheels 8 are lowered, the tires 7 are floated from the ground so that the wheels 8 can travel on the track 9.

These traveling mechanisms are, for example, upper revolving unit 3
It is preferable to use a diesel engine provided in the vehicle as a drive source.

The undercarriage 2 is further provided with traversing wheels 11 for moving between two tracks 9 laid in parallel, and a predetermined erection rail is bridged on the track 9.
By mounting the traversing wheel 11 on the rail, the entire pile driving machine 1 can be moved in a direction orthogonal to the track 9.

The upper swing body 3 includes a hydraulic pump 12 driven by a diesel engine or the like, a hydraulic oil tank 13, a swing mechanism 14, and a cab 15. Also,
A boom 5 is attached to the upper swing body 3, and the boom 5 is further provided with a winch 6 for hanging a pile.

The pile suspension winch 6 is capable of winding and unwinding a wire 16 having a hook 17 attached to the tip.

The pile driving machine 1 of the present embodiment includes a pile driving mechanism 4 for excavating a hole for inserting a pile in advance and driving a predetermined pile into the hole.

FIGS. 2 and 3 show the pile driver 1 in a front view and a plan view, respectively.

As can be seen in FIGS. 1 to 3, the pile driving mechanism 4
Comprises a reader 21, a hammer 23 also called monken and an auger 25, and the hammer 23 and the auger 25
The reader 21 is attached to the reader 21 so as to be able to ascend and descend along guides 22 and 24 provided on the reader 21. The reader 21 has a pair of hydraulic mechanisms capable of ascending and descending a hammer 23 and an auger 25 via wires 26 and 28, respectively. Hydraulic cylinders 27 and 29 are provided.

The hydraulic cylinders 27 and 29 are preferably configured to supply oil from a hydraulic pump 12 provided in the upper swing body 3, for example.

The pile driving mechanism 4 is rotatably attached to the tip of an arm 33 extending from the boom 5.

That is, a bracket 34 to which a suspension plate 36 is fixed is rotatably connected to the tip of the arm 33 via a shaft 35, and the suspension plate 36 faces the suspension plate 36. Reader 21 arranged at the position where
Is pivotally connected to a top plate 38 via a shaft 37.

The auger 25 can excavate a hole having a predetermined diameter by operating a hydraulic motor 31 built in the top and rotating the auger screw 30.
Like the hydraulic cylinders 27 and 29, the hydraulic motor 31 is preferably configured to supply oil from the hydraulic pump 12 provided in the upper swing body 3. The auger screw 30 has a lower end that freely passes through the steady rest 32.

As can be clearly understood from FIG.
1 is provided with a bracket 40 on the side thereof.
The leader 21 can be stably supported by being connected to the upper revolving unit 3 via 9.

Next, a description will be given of a procedure in which the pile driver 1 of the present embodiment is used for driving a pile, for example, in an area where a number of tracks are laid.

First, the pile driving machine 1 is moved to a predetermined pile driving place while appropriately switching the traveling mechanism of the lower traveling body 2. That is, the vehicle travels using the tires 7 on a road surface such as a road, and travels using the wheels 8 on a track.

After moving to the predetermined pile driving place, the outrigger 1
By deploying 0, the pile driver 1 is stabilized, and the pile driving is started.

As for the stakeout operation, when the hammer 23 and the auger 25 are switched, the boom 5 is turned to move the entire stakeout mechanism 4 horizontally.
There is a method of turning the pile driving mechanism 4 at the tip of the arm 33 without turning, and a method of turning the boom 5 first will be described.

First, the upper swing body 3 to which the boom 5 is attached
Is rotated with respect to the lower traveling body 2 so that the auger 25 comes above the pile driving position.

Next, as shown in FIG. 4, a hydraulic motor 31 provided at the top of the auger 25 is operated to rotate the auger screw 30 to excavate a hole. Here, the auger 25 is gradually lowered in accordance with the excavation depth by operating the hydraulic cylinder 29 dedicated to the auger housed in the reader 21.

Although not shown, a bracket 40 provided on the side of the reader 21 (the rear side in FIG. 4) during operation.
It is desirable to connect the stay 39 to the stabilizing device to stabilize the reader 21.

After the excavation, the hydraulic cylinder 29 is operated in the reverse direction to raise the auger 25 and pull it out of the hole 42.

Next, the upper revolving unit 3 is appropriately rotated to release the auger 25 to the side of the hole 42, and at the same time, hook a temporarily placed pile, for example, one end of an H-shaped steel, on the hook 17, and suspend the pile. Hole 42
Build in.

Next, the upper swing body 3 is swiveled appropriately so that the hammer 23 attached to the leader 21 is located directly above the H-shaped steel.

Finally, as shown in FIG. 5, the hydraulic cylinder 27 dedicated to the hammer built in the reader 21 is operated to
Die steel 43 is driven.

That is, the hydraulic pressure in the hydraulic cylinder 27 is released, the hammer 23 is freely dropped, and an impact is applied to the top of the H-shaped steel 43, and the oil is fed into the hydraulic cylinder 27 to raise the hammer 23 to a predetermined height. And repeat
The H-shaped steel 43 is driven to a desired depth.

Next, the boom 5 is not turned and the pile driving mechanism 4 is not rotated.
The method for turning the arm at the tip of the arm 33 will be described.

First, the pile driving mechanism 4 is appropriately rotated at the tip of the arm 33 so that the auger 25 comes above the driving position of the pile.

Next, as shown in FIG. 6, the hydraulic motor 31 provided at the top of the auger 25 is operated to rotate the auger screw 30 to excavate the hole 42. Here, the auger 25 is gradually lowered in accordance with the excavation depth by operating the hydraulic cylinder 29 dedicated to the auger housed in the reader 21.

During the operation, the stay 39 is preferably connected to a bracket 40 attached to the side of the leader 21 to stabilize the leader 21 during the operation, as shown in FIG.

After the excavation, the hydraulic cylinder 29 is operated in the reverse direction to raise the auger 25 and pull it out of the hole 42.

Next, the stay 39 is once removed, and the pile driving mechanism 4 is pivoted appropriately as shown by the arrow in the figure to release the auger 25 to the side of the hole 42 and to temporarily end one end of the H-shaped steel placed near. Is hooked on a hook 17, which is hung by a stake hanging winch 6 and built into the hole 42.

Next, the pile driving mechanism 4 is turned exactly 180 ° from the position shown in FIG. 6 so that the hammer 23 attached to the leader 21 is just above the H-section steel.

Next, as shown in FIG. 7, the auger 25 is removed, and the stay 39 is replaced with the bracket 40 on the opposite side.

Finally, the H-shaped steel 43 is driven by operating the hydraulic cylinder 27 dedicated to the hammer housed in the reader 21.

That is, the operation of releasing the hydraulic pressure in the hydraulic cylinder 27 to drop the hammer 23 to apply an impact to the top of the H-shaped steel 43 and the operation of feeding oil into the hydraulic cylinder 27 to raise the hammer 23 to a predetermined height. And repeat
The H-beam is driven to the desired depth.

When the pile driver 1 is moved to an adjacent track, a predetermined erection rail is laid over the track 9 and the traversing wheels 11 are mounted on the rail, thereby moving the pile driving machine 1 in a direction orthogonal to the track 9. What is necessary is just to move the whole pile driver 1.

As described above, according to the pile driving machine of this embodiment, the lower traveling body is provided with the tires as the road surface traveling mechanism and the wheels as the track traveling mechanism so as to be switchable.
It is possible to travel freely on a road surface such as a pavement road and on a track, and it is possible to perform pile driving one after another at predetermined positions while traveling on a track. In addition, since the lower traveling body is provided with the traversing wheels, it can be easily transferred to an adjacent track. Further, since the size of the pile driving machine is reduced, the pile driving can be performed without any trouble even when there is an obstacle in the sky.

Therefore, in a place such as a yard where a track is located on the ground and an overhead line is present above the ground, mobility which cannot be expected at all with a large pile driver is exhibited, and the robot is moved to an arbitrary place one after another. Can stake out.

Therefore, compared with the conventional method, the pile driving process at the above-mentioned location can be greatly reduced.

Further, since the auger and the hammer are mounted on the leader so as to be able to move up and down to form a pile driving mechanism, which is rotatably mounted on the upper revolving unit so as to be rotatable, the excavation step and the pile driving step are performed continuously. It becomes possible.

Therefore, even in a limited time zone at night, the pile driving operation can be performed quietly and quickly.

Furthermore, since the hydraulic cylinder for raising and lowering the auger and the hammer is installed in the reader, there is no need to provide a lifting winch on the main body (upper revolving unit).

Therefore, the structure of the upper swing body and the boom is simplified, which contributes to downsizing of the above-mentioned pile driving machine. In addition, since the lifting wire is not interposed between the main body and the pile driving mechanism, the pile driving mechanism is not required. The mounting and dismounting of the device becomes extremely easy.

Therefore, if a large number of pile driving mechanisms having augers and hammers with different specifications are prepared, the pile driving mechanism according to the situation can be selected and replaced at any time.

Further, since the upper revolving unit is pivotally attached to the lower traveling unit, a workable area at a predetermined track position can be widened.

Further, since the pile revolving winch is provided on the upper rotating body, handling of piles such as H-section steel becomes easy.

In the present embodiment, the pile driving work near the business line on the ground has been described as an example. However, the pile driving machine of the present invention can be used in a subway line, for example. If a erected rail is provided in a predetermined underground space where there is no room, and a pile driving operation is performed by running on this rail, a high workability that cannot be achieved by a conventional pile driving machine can be obtained.

In this embodiment, the hydraulic mechanism is constituted by using a hydraulic cylinder having a long stroke. However, the hydraulic mechanism is not limited to such a constitution, and various other modifications can be considered.

For example, as shown in FIG.
May be hung on the fixed pulley 51 and the moving pulley 52 to fix the other end to a predetermined position in the leader 21, and the extendable end of the hydraulic cylinder 27 may be connected to the shaft of the moving pulley 52.

[0077]

As described above, according to the pile driving machine of the present invention according to the first aspect, it is not necessary to provide an elevating winch on the main body (upper revolving unit). As a result, the upper revolving unit and the boom are not required. Simplifies the structure of the pile driving machine, thereby contributing to downsizing of the pile driving machine, and since the lifting wire does not intervene between the main body and the pile driving mechanism, the mounting and dismounting of the pile driving mechanism becomes extremely easy. Further, according to the pile driver of the present invention according to claim 2, transfer to an adjacent track is easy, and even in a place such as a yard where a track is on the ground and an overhead line is located above the track, a large pile driver is used. It has mobility that can not be expected at all with a machine, and it can be moved to any place one after another and piled.

[0078]

[Brief description of the drawings]

FIG. 1 is a side view of a pile driver according to the present embodiment.

FIG. 2 is a front view of the pile driver according to the embodiment.

FIG. 3 is a plan view of the pile driver according to the embodiment.

FIG. 4 is a diagram showing a state in which a hole is excavated by operating an auger of a pile driving mechanism.

FIG. 5 is a view showing a state in which a hammer of a pile driving mechanism is operated to drive a pile.

FIG. 6 is another diagram showing a state in which a hole is excavated by operating an auger of the pile driving mechanism.

FIG. 7 is another view showing a state in which the hammer of the pile driving mechanism is operated to drive the pile.

FIG. 8 is a conceptual perspective view showing a modification of the hydraulic mechanism.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 pile driver 2 lower traveling body 3 upper revolving structure 4 pile driving mechanism 5 boom 6 pile hanging winch 7 tire (road traveling mechanism) 8 wheel (track traveling mechanism) 9 track 11 traversing wheel 21 leader 23 hammer 25 auger 27 Hydraulic cylinder (hydraulic mechanism) 29 Hydraulic cylinder (hydraulic mechanism)

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kosaburo Tsuchiya 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office (72) Inventor Isao Ito 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Stock Obayashi Corporation Tokyo Headquarters (56) References Real Open Sho 55-136840 (JP, U) Real Public Sho 46-12002 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 7 / 00

Claims (2)

(57) [Claims] 1. A pile driving mechanism in which a predetermined upper revolving body is rotatably attached to a lower traveling body having a road surface traveling mechanism and a track traveling mechanism that are switchably provided, and an auger and a hammer are attached to a leader so as to be able to move up and down. A pile driver, comprising: a pair of hydraulic mechanisms rotatably mounted on an upper revolving structure and capable of moving the auger and hammer up and down, respectively, in the reader. 2. A pile driving mechanism wherein a predetermined upper revolving unit is rotatably attached to a lower traveling unit having a switchable road surface traveling mechanism and a track traveling mechanism, and an auger and a hammer are attached to a leader so as to be able to move up and down. A pile driver, which is rotatably attached to an upper revolving structure, and has a traversing wheel on the lower traveling structure.