JP4250060B2 - Pile press-fitting device - Google Patents

Description

  The present invention relates to a pile press-fitting device that press-fits a new pile by taking a reaction force from an existing pile.

Conventionally, a pile press-fitting device that takes a reaction force from an existing pile and press-fits a new pile is known.
This pile press-in device basically has a saddle with a clamp at the lower part that holds an existing pile, a slide base that slides back and forth with respect to the saddle, and a mast that stands upright and horizontally with respect to the slide base. And a chuck device that can move up and down with respect to the mast and grips the pile.
Furthermore, in addition to the above configuration, for example, a combination of auger devices (see, for example, Patent Document 1), a mast tilting function, and the like have been proposed (for example, see Patent Document 2).
Utility Model Registration No. 2515378 JP 2002-275893 A

In the pile press-fitting device, the mast can be rotated horizontally with respect to the slide base in order to adjust the position for press-fitting the pile.
In addition, when using a sheet pile in which adjacent sheet piles are alternately meshed like a U-shaped steel sheet pile, for example, the chuck device that holds the pile can be rotated with respect to the lifting means supported to be movable up and down by the mast. Yes.
In such a rotating part, a reaction force at the time of pile press-in, a reaction force by the rotation of an auger device, or a pile press-in device that presses in while rotating a tubular pile is applied with a force such as a reaction force by the rotation. And the rotation part moved from a predetermined position, and the construction accuracy of the pile press-fit sometimes deteriorated.

  The subject of this invention is improving the construction precision of pile press-fit in a pile press-fit apparatus.

In order to solve the above problems, the invention described in claim 1 is, for example, as shown in FIGS. 1 to 3, a saddle 3 having a plurality of clamps 2 for gripping an existing pile, and front and rear of the saddle 3. A slide base 4 that is freely movable, a mast 5 that is erected on the slide base 4 so as to be rotatable, and a chuck device 15 that is supported by the mast 5 so as to be movable up and down, and that grips and press-fits a new pile 7. A pile press-fitting device 1 comprising:
A restricting means 13 for restricting the rotational movement of the mast 5 ;
The restricting means 13 includes a cylinder device, and the cylinder portion 11 of the cylinder device is fixed to one of the mast 5 or the slide base 4 and the rod 12 is extended to extend the other of the mast 5 or the slide base 4. It is characterized in that the rotation is regulated by being brought into pressure contact with.

  Thus, the mast 5 can be fixed by having the restricting means 13 for restricting the rotational operation of the mast 5, and the reaction force at the time of press-fitting the pile, the reaction force by the rotation of the auger device 9, or the reaction by the rotation of the tubular pile. Even when a force such as a force is applied, the mast 5 does not move from a predetermined position, and the pile press-in construction accuracy can be improved.

As shown in FIGS. 1, 4, and 5, the invention described in claim 2 includes a saddle 3 having a plurality of clamps 2 that grip an existing pile, and a slide base that is movable back and forth with respect to the saddle 3. 4, a support arm 14 rotatably assembled on the slide base 4, a mast 5 erected with respect to the support arm 14, and a mast 5 supported by the mast 5 so as to be movable up and down. A pile press-fitting device 1 comprising a chuck device 15 for gripping and press-fitting a pile 7,
A restricting means 13 for restricting the rotational movement of the support arm 14 ;
The restricting means 13 includes a cylinder device, and the cylinder portion 11 of the cylinder device is fixed to one of the support arm 14 or the slide base 4 and the rod 12 is extended to extend the support arm 14 or the slide base 4. The rotation is regulated by being brought into pressure contact with the other of the two.

  In this way, by having the restricting means 13 for restricting the rotation operation of the support arm 14, the support arm 14 can be fixed and the rotation operation of the mast 5 can be fixed. Even if a reaction force such as a reaction force due to the rotation of the tube or a reaction force due to the rotation of the tubular pile is applied, the mast 5 does not move from the predetermined position, and the pile press-in construction accuracy can be improved.

The invention described in claim 3 is, for example, as shown in FIGS. 1, 6, and 7, a main body portion having a plurality of clamps 2 for gripping existing piles, and lifting means 6 supported by the main body portion so as to be movable up and down. And a pile press-fitting device 1 comprising a chuck device 15 that is rotatably assembled to the lifting means 6 and grips the pile 7,
A restricting means 13 for restricting the rotational operation of the chuck device 15 ;
The restricting means 13 has a cylinder device, the cylinder portion 11 of the cylinder device is fixed to one of the elevating means 6 or the chuck device 15, and the rod 12 is extended to extend the elevating means 6 or the chuck device 15. The rotation is regulated by being brought into pressure contact with the other of the two.

  Thus, by having the restricting means 13 for restricting the rotation operation of the chuck device 15, the chuck device 15 can be fixed at the time of pile press-in, and the reaction force at the time of pile press-in or the reaction force by the rotation of the auger device 9 Even if added, the chuck device 15 does not move from a predetermined position, and the construction accuracy of pile press-in can be improved.

According to the present invention, the rotating part such as the connecting part of the slide base 4 and the mast 5 or the support arm 14 and the connecting part of the lifting means 6 and the chuck device 15 can be fixed by the restricting means. Even if a force, a reaction force due to the rotation of the auger device, or a reaction force due to the rotation of the tubular pile is applied, the rotating portion does not move from a predetermined position, so that the accuracy of pile press-in can be improved.
In addition, if a cylinder device is used as the restricting means, it is possible to control the fixing and releasing of the rotating operation of the rotating portion by extending and contracting the rod.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the pile press-in device 1 basically includes a saddle 3 provided with a clamp 2 for holding an existing pile at a lower portion, a slide base 4 movable back and forth with respect to the saddle 3, and a slide base 4 The mast 5 is provided so as to be horizontally rotatable with respect to the mast 5 and the chuck device 15 is movable up and down with respect to the mast 5 and grips the pile 7.
This pile press-fitting device 1 grips an existing pile with a clamp 2, takes a reaction force from the existing pile, and press-fits a new pile 7.

The slide base 4 is provided with a rotating shaft 10, and a mast 5 is fitted to the rotating shaft 10, and the mast 5 is horizontally rotatable around the rotating shaft 10.
On the side portion of the mast 5, a regulating means 13 that regulates the rotation of the mast 5 is provided.
As shown in FIGS. 2 and 3, the regulating means 13 has a cylinder device, and rotates by fixing the cylinder portion 11 to one member of the rotating portion and extending the rod 12 to the other member and press-contacting them. Is to regulate.
Since the pile press-in device 1 has the same configuration as the well-known pile press-in device except that the control unit 13 is provided, only the configuration and function of the control unit 13 will be described in detail below.

The restricting means 13 is in a position where it is fitted to the rotary shaft 10 on the side of the mast 5, and as shown in FIG. 2, the cylinder device extends along the radial direction of the rotary shaft 10 provided on the slide base 4. It is arranged to have a length direction.
The cylinder portion 11 of the cylinder device is fixed to the mast 5 so that the rod 12 can extend toward the rotating shaft 10 side.
The movable range of the rod 12 is from a position not in contact with the rotation shaft 10 to a position in pressure contact with the rotation shaft 10.

Contrary to the above configuration, as shown in FIG. 3, the cylinder portion 11 of the restricting means 13 may be fixed to the rotating shaft 10 and the rod 12 may extend toward the mast 5.
At this time, when the cylinder portion 11 of the restricting means 13 protrudes toward the mast 5 as shown in FIG. 3, the restricting means 13 passes through the fitting portion of the mast 5 with the rotating shaft 10 when the mast 5 rotates. A space is formed in a circle around the rotation shaft 10 so that it can be made.

In the case of the pile press-fitting device 1 having a mechanism capable of tilting the mast 5, as shown in FIG. 4, the support arm 14 is rotatably attached to the slide base 4, and the mast 5 is erected on the upper part thereof. .
In such a case, the restricting means 13 is provided between the rotating shaft 10 provided on the slide base 4 and the support arm 14.
The attachment position and operation of the restricting means 13 are substantially the same as those described above, and the rod 12 extends toward the rotation shaft 10 at a portion where the cylinder portion 11 is fitted to the rotation shaft 10 of the support arm 14. Fix it as you can.
Alternatively, as shown in FIG. 5, the cylinder portion 11 may be fixed to the rotating shaft 10 and the rod 12 may extend toward the support arm 14.

When using a sheet pile in which adjacent sheet piles are alternately meshed like a U-shaped steel sheet pile, the chuck device 15 provided inside the elevating means 6 for gripping the pile 7 is made rotatable and the pile 7 is gripped sequentially. Press-in while changing the direction.
When restricting the rotation of the chuck device 15 having such a mechanism, as shown in FIG. 6, the cylinder portion 11 of the restricting means 13 can be extended to the elevating means 6, and the rod 12 can be extended toward the chuck device 15. To fix.
In contrast to the above configuration, as shown in FIG. 7, the cylinder portion 11 of the restricting means 13 may be fixed to the chuck device 15 and the rod 12 may extend toward the lifting means 6.

Of the above-described configurations, as shown in FIGS. 3, 5, and 7, the cylinder portion 11 is fixed to the inner member and the rod 12 is fixed to the outer member among the members of the rotating portion that are rotatably fitted. If it is configured to be in pressure contact, the radius of the portion where the rod 12 is in pressure contact becomes larger than in the case of the opposite configuration.
In this way, since the rotation can be regulated with a smaller force, the regulating means 13 can be miniaturized.

Next, the usage method of the pile press-fit apparatus 1 comprised as mentioned above is demonstrated.
As described above, the pile rotary press machine 1 shown in FIG. 1 presses a new pile 7 in a state where the existing pile is grasped by the clamp 2 and a reaction force is taken from the existing pile.

Before the new pile 7 is press-fitted, the movable parts such as the slide base 4 and the mast 5 are operated according to the position of the existing pile, and the pile 7 to be newly press-fitted is aligned.
When the press-fitting position of the pile 7 is determined, the rotating part is fixed by the restricting means 13 before starting the press-fitting.

For example, in the pile press-fitting device 1 having the configuration shown in FIG. 2, the rod 12 of the cylinder device that forms the restricting means 13 is extended and pressed against the side surface of the rotating shaft 10 in order to restrict the rotation operation of the mast 5. .
Also, in the case of the pile press-fitting device 1 having the configuration shown in FIGS. 3 to 7, the rod 12 of the cylinder device that constitutes the restricting means 13 provided in the rotating portion is extended in order to restrict the rotating operation of each rotating portion. And press against the face.
As a result, the rotational movement of the rotating part is restricted, so that the rotating part rotates even when a force such as a reaction force during pile press-in, a reaction force due to the rotation of the auger device, or a reaction force due to the rotation of the tubular pile is applied. The part does not move from a predetermined position, and the pile press-in construction accuracy is improved.

When the press-fitting of the pile is completed, the rod 12 of the cylinder device that constitutes the restricting means 13 is retracted so that the rod 12 does not come into contact with the opposite side, and after fixing the rotating part, the position of the next pile to be press-fitted is adjusted. Do.
Thereafter, the above operation is repeated to press-fit the pile.

It should be noted that the number of cylinder devices constituting the restricting means 13, the mounting position thereof, and the like shown in the above embodiment are arbitrary and are not limited thereto.
Of course, other specific detailed structures can be appropriately changed.

Further, another mechanism may be used as the restricting means 13. For example, a structure is provided in which a disk is provided on one of the members of a rotating part that is rotatably fitted, and a movable pad that sandwiches the other is provided to restrict rotation. Alternatively, a brake circuit may be provided in an actuator such as a motor that drives the rotating unit.
Moreover, although a fixed position is limited, it is good also as a structure which inserts a key and a pin in a rotation part and fixes a rotation part.

It is a side view of a pile press-fitting device showing a configuration of an embodiment to which the present invention is applied. It is sectional drawing in the control means attachment position of a mast. In the example shown in FIG. 2, it is the figure which changed the attachment position of the control means. It is sectional drawing of the control means attachment position of a mast in the pile press-fit apparatus which has a mast inclination mechanism. In the example shown in FIG. 4, it is the figure which changed the attachment position of the control means. It is sectional drawing in the control means attachment position of a raising / lowering means. In the example shown in FIG. 7, it is the figure which changed the attachment position of the control means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pile press-fit apparatus 2 Clamp 3 Saddle 4 Slide base 5 Mast 6 Lifting means 7 Pile 8 Cylinder apparatus 9 Auger screw 10 Rotating shaft 11 Cylinder part 12 Rod 13 Control means 14 Support arm 15 Chuck apparatus

Claims (3)

A saddle having a plurality of clamps for gripping an existing pile, a slide base that is movable back and forth with respect to the saddle, a mast that is rotatably installed on the slide base, and a mast supported by the mast. A pile press-fitting device comprising a chuck device for gripping and press-fitting a new pile,
A restricting means for restricting the rotational movement of the mast ;
The restricting means includes a cylinder device, and the cylinder portion of the cylinder device is fixed to one of the mast or the slide base, and is rotated by extending a rod to be in pressure contact with the other of the mast or the slide base. Pile press-fitting device characterized by regulation. A saddle having a plurality of clamps for gripping an existing pile, a slide base that can move back and forth with respect to the saddle, a support arm that is rotatably mounted on the slide base, and a tiltable movement with respect to the support arm A pile press-fitting device comprising a standing mast and a chuck device that is supported by the mast so as to be movable up and down, and grips and presses a new pile,
A restricting means for restricting the rotational movement of the support arm ;
The restricting means includes a cylinder device, and the cylinder portion of the cylinder device is fixed to one of the support arm or the slide base, and a rod is extended to be brought into pressure contact with the other of the support arm or the slide base. Pile press-fitting device characterized by restricting rotation. Pile press-fitting device comprising: a main body portion having a plurality of clamps for gripping an existing pile; elevating means supported by the main body portion so as to be movable up and down; and a chuck device rotatably assembled to the elevating means and gripping the pile Because
A restricting means for restricting the rotational operation of the chuck device ;
The restricting means includes a cylinder device, and the cylinder portion of the cylinder device is fixed to one of the elevating means or the chuck device, and a rod is extended to be brought into pressure contact with the other of the elevating means or the chuck device. A pile press-fitting device characterized by restricting rotation.

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