JPH0685437U - Auxiliary pile - Google Patents

Abstract

(57) [Summary] [Purpose] To provide auxiliary piles (yatoko piles) with good workability. [Structure] At both ends of the cylindrical body 1, coupling seats 2 of the same structure are formed.
Fix 2 The coupling seat 2 includes a first annular plate 3 provided with engagement holes 6 and 6 and bolt insertion holes 7 and 7 that can be engaged with and disengageably engage with hook pieces protruding from the concrete pile and the driver. This is a structure in which two annular plates 4 are fixed to each other via connecting members 5 and 5. The auxiliary pile can be engaged and disengaged by the forward and reverse rotations of the driving body by the driving body and the concrete pile, the hook piece, and the engaging holes 6 and 6. In addition, the auxiliary piles are connected to each other by the first annular plates 3, 3
It can be connected and separated by bolts and nuts through the bolt insertion holes 7, 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an auxiliary pile used when a concrete pile is sunk to a predetermined underground depth.

[0002]

[Prior art]

 Generally, the concrete pile is deposited by excavating the ground with an auger to form a deposit hole, injecting soil cement or a rooting solution into the hole, and then inserting the concrete pile while rotating it. Due to the foundation footing of the building, the head of the concrete pile may be sunk to a certain depth underground. In such a case, an auxiliary pile (bark pile) is connected to the upper end of the concrete pile to reach the predetermined depth, and then the auxiliary pile is detached from the concrete pile and removed. Conventionally, it is known from Japanese Utility Model Publication No. 58-47079 and Japanese Utility Model Publication No. 64-28482. These conventional auxiliary piles have a structure in which long and thin screw rods are provided on a cylindrical casing to connect and separate the auxiliary pile and the concrete pile.

[0003]

[Problems to be solved by the device]

 As described above, the conventional auxiliary pile is connected to the concrete pile using a large number of long screw rods, so the work of joining and separating the concrete pile is extremely troublesome, and the structure is complicated and expensive. There is. If the depth of the concrete pile is changed, it is necessary to manufacture and use the auxiliary pile with a length corresponding to the depth, which results in a large cost burden. Also, since the length of one auxiliary pile is limited due to transportation etc., if the depth of the concrete pile is deeper than the length of the auxiliary pile, the length of each auxiliary pile will be reduced. Another auxiliary pile is added to the auxiliary pile by welding and then sunk.When removing the auxiliary pile, complicated work such as fusing and separating the auxiliary pile that has been added is required, which makes the construction more troublesome. It was inefficient and costly.

The present invention has been made to solve the above-mentioned problems in the conventional auxiliary pile, and can be easily attached to and detached from the concrete pile, and rotation can be reliably transmitted. It is an object of the present invention to provide an auxiliary pile that can easily connect and separate piles from each other, and can easily cope with various depths of concrete piles.

[0005]

[Means for Solving the Problems]

 A configuration of the present invention for achieving the above-mentioned object will be described with reference to the drawings corresponding to the embodiments. The present invention provides a cylindrical body 1 and a coupling seat body fixed to both ends of the cylindrical body 1. 2 and 2, the coupling seat 2 is a circumferentially long engagement hole that can be engaged with and disengaged from the driving body 13 coupled to the rotating device and the hook pieces 15 and 12 provided on the concrete pile 10. The second annular plate 4 is formed on the first annular plate 3 in which the plurality of bolt insertion holes 7 and the plurality of bolt insertion holes 7 are separated from each other through the connecting members 5 and 5 having a required height. The annular plate 4 is in contact with and fixed to the cylindrical body 1.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 5, reference numeral 1 is a cylindrical body having substantially the same diameter as the concrete pile to be laid down, and is formed to have a length of 3 to 5 m as an example. Then, coupling seats 2 and 2 having the same structure are fixed to both ends of the cylindrical body 1, respectively.

In the coupling seat body 2, a first annular plate 3 and a second annular plate 4 each having an outer diameter substantially the same as the outer diameter of the cylindrical body 1 have connecting members 5 and 5 having a plurality of required heights. The first annular plate 3 is provided with a plurality of engaging holes 6 and 6 formed in the circumferential direction of the seat plate 3 and a plurality of bolt insertion holes 7 and 7 that are separated from each other. They are provided at approximately equal intervals. Then, the coupling seat bodies 2 and 2 are fixed to each other by welding the second annular plate 4 to the end surface of the cylindrical body 1 and welding.

In the concrete pile 10 to be combined with the auxiliary pile having the above structure, the inverted L-shaped hook pieces 12 and 12 which can be engaged with and disengaged from the engaging holes 6 and 6 of the auxiliary pile are provided at the upper end of the concrete pile 10. The protruding seat plate 11 is fixed. Further, as a member that imparts rotation to the auxiliary pile, an angular shaft 14 that is coupled to a rotating device (not shown) of the yagura used for sinking the pile is provided so as to project upward, and the engaging holes 6 and 6 of the auxiliary pile are provided. A driving body 13 having L-shaped hook pieces 15 and 15 which can be detachably attached to the 6 is projected downward is used.

Next, an example of sinking the concrete pile 10 will be described. First, the settling hole of the concrete pile 10 is dug in the ground, and cement milk or the like is filled therein. Then, as shown in FIG. 6, the auxiliary pile of the present invention is connected to the upper end of the concrete pile 10, and the driving body 13 is connected to the upper end of the auxiliary pile. That is, the hook pieces 12, 12 of the concrete pile 10 are projected into the engaging holes 6, 6 of the connecting seat body 2 at the lower end of the auxiliary pile, and the engaging hole 6 of the connecting seat body 2 at the upper end of the auxiliary pile is inserted. , 6 are made to project the hook pieces 15 and 15 of the driving body 13, and the driving body 13 is rotated in the direction of arrow a in FIG. As a result, the hook pieces 15, 15 hit one ends of the engagement holes 6, 6 and are coupled to each other in a state where they cannot be disengaged from each other in the axial direction. When the driving body 13 is further rotated in the same direction, the auxiliary pile also rotates in the direction of the arrow a, and the hook pieces 12, 12 of the concrete pile 10 come into contact with one end of the engaging holes 6, 6 so that they are mutually axised. It is connected so that it cannot be separated in the direction. After that, if the driving body 13 is connected to a rotating device and is suspended while rotating in the direction of arrow a, the concrete pile 10 will be gradually sunk while rotating.

When the concrete pile 10 is sunk to a predetermined depth from the surface of the earth, the rotating device is reversed. As a result, the driving body 13 rotates in the direction of arrow b, the hook pieces 15, 15 contact the other ends of the engaging holes 6, 6 to rotate the auxiliary pile in the same direction b, and the hook pieces 12, 12 of the concrete pile 10 are rotated. Becomes close to the other ends of the engaging holes 6 and 6 and can be disengaged vertically. Therefore, the rotating device is slightly lowered, the auxiliary pile is placed on the concrete pile 10, and then the driving body 13 is again rotated in the normal direction of the arrow a so that the hook pieces 15 and 15 are engaged at one end of the engagement holes 6 and 6. To the engaged state. In this case, since the auxiliary pile has a large rotational frictional force, the auxiliary pile does not rotate, only the driving body 13 rotates, and the driving body 13 and the auxiliary pile remain connected to each other and the auxiliary pile and the concrete pile 10 are separated from each other. You will be able to leave. Therefore, by raising the rotating device, the auxiliary pile is suspended from the driving body 13 and separated from the concrete pile 10 and pulled up. It will then be used to lay the next concrete pile.

The auxiliary pile of the present invention is characterized in that not only the connection and separation with the concrete pile 10 but also the connection and separation between the auxiliary piles can be easily performed. As shown in FIG. 7, the auxiliary piles are joined by joining the first annular plates 3 and 3 to each other and fastening them by bolts and nuts 16 and 16 through the bolt insertion holes 7 and 7. Can be done. Also, if the bolts and nuts 16 and 16 are removed, they can be easily separated. The depth of the concrete pile from the surface where it is deposited varies depending on the construction site. Therefore, as the above-mentioned auxiliary pile, it is possible to prepare a plurality of two kinds of lengths, for example, 3 m and 5 m, and to cope with them by various combinations and combinations thereof.

[0012]

[Effect of device]

 As described above, the auxiliary pile of the present invention has a structure in which the first and second annular plates having the engaging holes for engaging and disengaging the hook pieces and the bolt inserting holes are provided at both ends of the cylindrical body. Therefore, the concrete pile and the driving body can be easily connected and separated through the hook pieces projecting from them, and the concrete pile digging work can be performed easily and efficiently. In addition, it is possible to easily connect and separate auxiliary piles by using bolts and nuts, and if at least two kinds of auxiliary piles with different lengths are prepared, it is possible to adapt to various construction conditions and repeat. Then you can use it.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a perspective view illustrating a relationship between a concrete pile and a driving body.

FIG. 6 is a partially cutaway front view showing a combined state of the concrete pile and the driving body.

FIG. 7 is a partially cutaway front view showing the connection between auxiliary piles.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 Coupling seat 3 First annular plate 4 Second annular plate 5 Connecting member 6 Engagement hole 7 Bolt insertion hole 10 Concrete pile 11 Seat plate 12 Hook piece 13 Driver 14 Square shaft 15 Hook piece 16 Bolt ·nut

Claims (1)

[Scope of utility model registration request] It is composed of a cylindrical body and a coupling seat fixed to both ends of the cylindrical body. The coupling seat is detachable from each of the driving body coupled to the rotating device and the hook piece provided on the concrete pile. The second annular plate is formed on the first annular plate, which has a plurality of engaging holes that are long in the direction and the plurality of bolt insertion holes, which are separated from each other, via a connecting member having a required height. Characterized in that the annular plate is fixed in contact with the cylindrical body,
Auxiliary pile.