JP2010196455A - Vibrating pile driving and drawing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for driving and drawing a pile by installing a vibrating pile driving and drawing machine near the ground surface in view of the problem that placing the vibrating pile driving and drawing machine, which is a heavy machine, on an upper end of the pile is unstable and unsafe while the vibrating pile driving and drawing machine is generally mounted on the upper end of the pile to be driven into the ground by applying vibrations to the pile. <P>SOLUTION: A stationary part S is held at a predetermined position above the ground by a supporting yoke 10. A vertically moving part M is suspended from the stationary part S by an ascending/descending cylinder 9, and is vertically reciprocated by expansion and contraction of the ascending/descending cylinder. The vertically moving part M is provided with a lower chuck 12D for holding and releasing the pile 1 to be driven. Namely, the pile 1 is driven into the ground by repeating the operations of loosening the chuck to ascend and tightening the chuck to descend. Thus, the vibrating pile driving and drawing machine is positioned near the ground surface 4 to drive the pile 1 into the ground. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vibration pile punching machine, and more particularly to a vibration pile punching machine improved so that the working state is stable and safe, and the necessity for cooperation of peripheral devices is small.

Mechanical devices for placing ready-made piles are roughly classified into vibration pile drivers and press-fit pile drivers.
FIG. 6A shows an example of a typical vibration pile driver. However, since the pile driver generally has a function of removing a pile, it is called a vibration pile puncher.
The top of the pile 1 to be driven is gripped by the chuck 2 a of the vibration pile punching machine 2 and is suspended by the crane 3 so that the pile 1 to be driven is set on the ground 4.
When the vibration pile punching machine 2 is operated in this state to give vertical vibration to the driving pile 1, the pile 1 sinks into the ground due to the gravity load of the vibration pile punching machine 2 and the weight of the pile 1. It is cast.
FIG. 6B shows a working state of a typical press-fitting pile punching machine.
The press-in pile punching machine 6 grips a plurality of existing piles 5 and is installed thereon, and stands the placing pile 1 gripped by the chuck 6 a on the ground 4. When the cylinder 6b is operated and a downward force is applied to the driving pile 1, the driving pile 1 penetrates into the ground and is driven.

The vibration pile punching machine and the press-fit pile punching machine have their own merits and demerits, both of which are active as the main machines for construction of existing piles.
Comparing the two, the vibration pile punching machine exerts a strong penetration force against the hard ground, and the press-fitting pile punching machine has low vibration and noise pollution.
These are as follows, focusing on the disadvantages.
Vibrating pile punching machines have also become quite quiet due to recent improvements, but they are difficult to use under working conditions that do not allow slight vibration and noise, such as in the vicinity of hospitals.
Also, the press-in pile punching machine has increased the penetrating input of the pile due to the recent improvement, but if you try to place the pile on a relatively hard ground, auxiliary equipment such as earth auger and water jet will cooperate. It must be difficult and independent construction is difficult.

Furthermore, considering the weight distribution and stability of various equipment, it is as follows.
Since there are many types of vibration pile punching machines, there are many exceptions, but the vibration pile punching machine 2 is mounted on the top of the driving pile 1 as shown in FIG. It is insecure if it is in a stable state and is not always suspended by a crane.
In this respect, the press-fitting pile punching machine 6 shown in FIG. 6 (B) is excellent in stability because it is located at a location not far from the ground 4, and even if the driving pile 1 is not suspended by a crane, The risk that the stake will fall is negligible.

  JP 2000-204552 A   JP 2006-207354 A

The vibration pile punching machine has a general tendency compared to the press-fitting pile punching machine, and has the advantage that the pile penetration to the hard ground is large, and the mechanical ground is high and unstable. Have.
The present invention has been made in view of the above-mentioned circumstances, and its object is to provide stability comparable to a press-fitting type without impairing the powerful penetrating input that is an advantage of the vibration type. To provide a vibration pile punching machine.

The invention of claim 1 created to achieve the above object will be described below with reference to FIG. 1 corresponding to one embodiment thereof.
In the column of means for solving this problem, in order to facilitate collation with the drawings, the reference numerals of the drawings are added in parentheses, but this is for reference only, and the technical The scope is not limited to the drawings.
A main body (15) having a central hole through which the pile (1) can be passed, and being held at a fixed position away from the ground (4);
A vertical movement part (M) located between the main body part and the ground and moving up and down with respect to the main body part;
Elevating drive means (9) interposed between the vertically moving part and the main body part for raising and lowering the vertically moving part,
The vertical movement part includes an exciter (11) having a structure capable of penetrating the pile and a chuck (12D) for gripping the pile penetrating the exciter. .

In addition to the constituent features of the invention of claim 1, the invention of claim 2
The vertical movement part (M) has a support frame (13) attached to the main body part (15), and
The vibrator (11) is attached to the support frame via a buffer member (14),
The chuck (12D) is fixed to the vibrator.

In addition to the constituent features of the invention of claim 2, the invention of claim 3
The support frame (13) is attached to the main body (15) via a bearing (18),
The vertical movement part (M) has a structure capable of rotating concentrically with a pile (1) passing through the vertical movement part.

The invention according to claim 4 is the vibration pile punching machine according to any one of claims 1 to 3.
It is mounted on the track frame (19a), which is a component of a tracked construction vehicle, or a wheeled carriage (not shown).
Or it is mounted in the installation frame (21) provided with the expansion-contraction leg (22) mounted on the ground.

  According to the first aspect of the present invention, the main body part is located at a certain position on the ground, and the vertical movement part having the vibrator and the chuck, which is the largest heavy equipment, is disposed below the main body part. The center of gravity of the pile punching machine as a whole is low and stable. And since it is a vibration pile punching machine provided with the vibrator, the ability to penetrate the pile which should be laid in the ground is strong.

  According to the invention of claim 2, since the buffer member is interposed between the exciter and the main body part and is vibrationally insulated, the vibration is not transmitted to the main body part (although not transmitted at all). It is easy to hold the main body at a fixed position.

  According to the invention of claim 3, since the chuck that holds the pile can be rotated while the main body is kept stationary at a fixed position, the posture of the placing pile ( The angular position around the vertical axis can be easily adjusted, and the workability is excellent.

According to invention of Claim 4, since a main-body part can be hold | maintained stably and a part of reaction force of a placing pile can be supported by the apparatus holding the main-body part, it is convenient.
In addition, when mounted on a truck frame or a truck, it can travel after being placed in a pile punching machine at a location away from the pile placement point, so it can be run in tunnels or under elevated places where cranes cannot enter. It is suitable for the pile punching work.

  1 is a schematic sectional front view showing an embodiment of the present invention.   The schematic diagram of the vibrator which has a pile penetration hole based on the well-known invention (Unexamined-Japanese-Patent No. 2006-207354) applied to the said embodiment   The schematic diagram which shows two examples of embodiment corresponding to Claim 4 of this invention   The process figure which drawn the first half of 1 cycle in the operation | work which drives a pile using the vibration pile punching machine which concerns on one Example of this invention.   Process drawing depicting the second half of one cycle in the work of placing the pile   It is shown in order to explain the publicly known example about a pile punching machine, (A) is a front view in the state where a pile is driven by a vibration pile punching machine, (B) is a pile driving by a press-fit pile punching machine Front view

FIG. 1 is a schematic cross-sectional view depicting one embodiment of a vibration pile punching machine according to the present invention.
Since it is drawn schematically, it is not a realistic projection.
If it sees in outline, the upper half will be the stationary part S, the lower half will be the up-and-down moving part M, and the placing (to be) pile 1 will penetrate the center up and down.
Details are as follows.
The main body 15 is an upright cylindrical member, in which an upper chuck 12U is provided to form a stationary portion S. The main body 15 is connected to a support yoke 10 that is a front attachment of a shovel car by a connection pin 16 and is held at a position shown in the drawing.
As will be described later with reference to FIG. 4 and FIG. 5, the main body portion 15 is stationary during the basic pile driving operation (moves up and down slightly if applied operation). It may be possible).
In addition, in this invention, a main-body part is a name of the structure supported by a fixed position with respect to the ground, Comprising: It is not necessarily a member which occupies most parts in shape, and is not a member which occupies most parts in weight. .

The vertical movement part M is arrange | positioned between the said stationary part S and the ground 4, and is comprised as follows.
Having an elevating frame 17 guided so as to be vertically slidable with respect to the main body portion 15;
A support frame 13 is attached to the lower end of the elevating frame 17 via a bearing 18;
The exciter 11 is attached to the support frame 13 via a rubber cushioning member 14,
A chuck indicated by reference numeral 12D is fixed below the vibrator.
The chuck 12D is referred to as a lower chuck to be distinguished from the upper chuck 12U described above. The fact that the lower chuck 12D is fixed to the vibration exciter means that the lower chuck 12D is coupled so that vibration is transmitted. Is.

As shown in FIG. 1, the driving pile 1 passes through the center line of the stationary part S and the vertical movement part M.
That is, the stationary part S and the vertical movement part M are provided with a center hole through which a pile can be inserted.
As for the technology for penetrating the pile at the center of the vibrator, it is desirable to apply “a vibrator for a pile puncher capable of adjusting the vibratory force” disclosed in JP-A-2006-207354.
FIG. 2 is a horizontal sectional view published in the above publication, wherein a left-side vibration mechanism L and a right-side vibration mechanism R that are rotationally driven by a pair of left and right drive motors m are disposed symmetrically, It is interlocked by the timing belt 20. This interlocking is not for the purpose of power transmission but for adjusting the phase.
In this way, the pile insertion hole 8 is provided in the central portion of the exciter case 7.
As understood from this figure, it is mechanically equivalent (equal) even if the notch shown by the phantom line C is provided instead of the above-mentioned pile insertion hole, and the notch is more It is convenient for insertion and removal.
Although it is now called a notch C when viewed in a horizontal section, it is a groove having a length in a direction perpendicular to the paper surface when considered three-dimensionally.
As can be understood from the structural function described above, in the present invention, the “center hole” through which the pile is inserted means a “through hole or groove” through which the pile can be inserted, and does not necessarily pass through the center geometrically. It is enough to pass through the center. Near the center means an area closer to the center than the periphery.

As described above, the vertically moving portion M can hold the placing pile 1 by the lower chuck 12D and can be rotated concentrically with the placing pile 1 by the action of the bearing 18.
This rotation is for adjusting the position and posture of the placing pile 1 and fulfills the function of adjusting the angular position around the center line of the pile.
In order to rotate the vertical movement portion M as described above, it is necessary to provide a bearing 18 between the support frame 13 and the main body portion 15. However, in this embodiment, a bearing 18 is interposed between the support frame 13 and the lifting frame 17, and the lifting frame 17 is slidably connected to the main body 15. As understood from the above structural functions, in the present invention, “the support frame is attached to the main body via the bearing” does not necessarily require direct attachment, and an auxiliary member is interposed. It may be attached indirectly.

The up-and-down moving part M is suspended from the main body part 15 by the elevating cylinder 9, and when the elevating cylinder is extended, the up-and-down moving part is lowered, and when the elevating cylinder is contracted, the up-and-down moving part is raised. In FIG. 1, what is drawn by a broken line (hidden line) at an overlapping portion between the lifting frame 17 and the main body 15 is a vertically sliding guide.
The upper chuck 12U, the lower chuck 12D, the exciter 11, and the elevating frame 17 are driven by hydraulic pressure, and are provided with hydraulic piping and valves not shown.
In addition, a hydraulic cylinder or a hydraulic motor for rotating the support frame 13 around a vertical axis, and piping and valves (both not shown) are also provided.

As described above, the main body 15 which is a main component of the stationary part S is supported at a fixed position with respect to the ground.
FIG. 3 shows two examples of structures that support the stationary part (main body part) of the vibration pile punching machine according to the embodiment shown in FIG.
In the example of FIG. 3A, a crawler traveling mechanism for a construction machine is used, an installation frame 21 is constructed on the track frame 19a, and a stationary part S is mounted on the installation frame 21. Specifically, the main body 15 is attached to the installation frame 21 by the connecting pin 16 (see FIG. 1).
Although illustration is omitted, the installation frame 21 can be constructed on a carriage that runs on rails laid on the ground.
According to such a support structure, since the stationary part S can be stably supported and can be self-propelled, it is easy to punch out piles even in working conditions with overhead obstacles such as in a tunnel. it can.
(Note) For example, a driving pile is hung on a vibrating pile punching machine by a crane outside the tunnel, and it is driven by itself to enter the tunnel.

FIG. 3B is an example in which the installation frame 21 shown in FIG.
In consideration of the case where the ground surface is asymmetrical, telescopic legs 22 similar to the outriggers are provided.
If FIG. 3 which is an Example of this invention is compared with FIG. 6 (A) which is a prior art example, the difference in stability resulting from the height of the center of gravity of the pile punching machine can be easily understood.
(See FIG. 1) Although only the support yoke 10 is depicted as a member that supports the main body 15 at a fixed position, as described above, the support yoke 10 is a front attachment of a shovel car, Since it is supported by the arm of the shovel car (not shown), there is no fear of stability.

4 and 5 are process diagrams depicting the order of pile driving work using the vibration pile punching machine according to the embodiment shown in FIG. 1 described above. 4 shows the first half of one cycle, and FIG. 5 shows the second half of the same cycle.
The state shown in FIG. 4A is almost the same as the state shown in FIG. 1, but the lower chuck 12D is placed in contact with the ground and the lifting cylinder 9 is extended to the full stroke.
Attention is paid to the position of the connecting pin 16 as a guide indicating the vertical position of the main body 15. In this case, the ground height of the connecting pin 16 is H, and the driving depth of the driving pile 1 is D.
In this state, when the upper chuck 12U is tightened, the lower chuck 12D is opened, and the elevating cylinder 9 is contracted, the vertical movement portion M is pulled up as illustrated in FIG. 4B.
The ascending dimension is the same as the stroke dimension h of the elevating cylinder 9, and a gap of dimension h is formed between the lower chuck 12 </ b> D and the ground 4.

When the lower chuck 12D is tightened in this state, the state is as shown in FIG.
When the raising and lowering cylinder 9 is freed from expansion and contraction and the vibration generator 11 is actuated to apply vertical vibration to the driving pile 1, the lower chuck 12D that holds the driving pile 1 and the vibration that is fixed to the lower chuck The vertical movement part M consisting of the machine 11 and the support frame 13 to which the vibrator is mounted descends and stops as shown in FIG. 5 (D).
The descending dimension in this case is equal to the stroke dimension h of the elevating cylinder 9.
For this reason, the driving depth which was the dimension D in the process of FIG. 4A is D + h in the process of FIG.
The state shown in FIG. 5D is the same as that shown in FIG. 4A except for the pile driving depth.
Therefore, if the above-mentioned operation is taken as one cycle and this is repeated, the pile is driven in by the dimension h every cycle.
When one pile has been driven in this way, the next one pile is driven adjacent to the pile. At this time, it is necessary to adjust the posture (rotational angle position around the vertical axis) of the next single pile. This adjustment can be performed by rotating the support frame 13 around the vertical axis.

DESCRIPTION OF SYMBOLS 1 ... Pile to be laid 2 ... Conventional vibration pile punching machine 2a ... Chuck 3 ... Crane 4 ... Ground 5 ... Existing pile 6 ... Press-fit pile punching machine 7 ... Exciter case 8 ... Pile insertion hole 9 ... Elevating cylinder DESCRIPTION OF SYMBOLS 10 ... Support yoke 11 ... Vibrator 12D ... Lower chuck 12U ... Upper chuck 13 ... Support frame 14 ... Buffer member 15 ... Main-body part 16 ... Connecting pin 17 ... Lifting frame 18 ... Bearing 19 ... Crawler traveling mechanism 20 ... Timing belt 21 ... Installation frame 22 ... Extensible leg M ... Vertical moving part S ... Standing part

Claims (4)

A main body having a central hole that can penetrate the pile, and being held at a fixed position away from the ground;
A vertically moving part that is located between the main body part and the ground, and moves up and down with respect to the main body part;
Elevating drive means interposed between the vertical moving part and the main body part to raise and lower the vertical moving part,
The vibration pile punching machine, wherein the vertical movement portion includes a vibrator having a structure capable of penetrating the pile and a chuck for gripping the pile penetrating the vibrator. The vertical movement part has a support frame attached to the main body part,
The vibrator is attached to the support frame via a buffer member,
The vibration pile punching machine according to claim 1, wherein the chuck is fixed to the vibrator. The support frame is attached to the main body through a bearing,
3. The vibration pile punching machine according to claim 2, wherein the vertical movement portion has a structure capable of rotating concentrically with a pile passing through the vertical movement portion. The vibration pile punching machine according to any one of claims 1 to 3,
It is mounted on a track frame, which is a component of a tracked construction vehicle, or a wheeled carriage,
Or the vibration pile punching machine mounted in the installation frame provided with the expansion-contraction leg mounted in the ground.

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