JPH026113Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a foundation pile chucking device for gripping a ready-made foundation pile and lowering it into a pit while rotating it.

In general, when installing prefabricated foundation piles, the ground is excavated with an auger to form a hole, and the prefabricated pile is suspended and inserted into the hole. However, if there is excavated soil in the hole, Since the pile cannot be inserted to the predetermined depth by its own weight alone, it becomes necessary to apply other means such as rotation or press-fitting to the ready-made pile. Therefore, in the past, a device for imparting rotation to the ready-made pile was attached, and the power for rotating the auger was used to rotate the ready-made pile.
The drawbacks are that the ready-made piles require special processing and require skill to handle, making them troublesome.

The purpose of the present invention is to provide a chucking device for foundation piles that solves the drawbacks of the conventional devices as described above, does not require any special processing on ready-made piles, is easy to handle, and can be manufactured at low cost. This is a rotary motor in which a pair of opposing hooks are provided on the upper surface of an annular seat plate removably formed on the upper end surface of the foundation pile, with the opening sides facing each other in the circumferential direction of the seat plate. a cylindrical chucking cap in which an engaging hanging rod that can be engaged with the hook is horizontally installed;
It is characterized by an auger joint that is removably formed on the upper surface of the chucking cap.

Hereinafter, one embodiment of the device of the present invention will be described with reference to the drawings.

FIGS. 1 to 6 individually show a rotating cap A, a cylindrical chucking cap B, and an auger joint C in the device of the present invention.

As shown in Figs. 1 and 2, the rotating cap A has a seat plate 1 formed in an annular shape approximately the same as the end plate at the upper end of a hollow foundation pile, and a pair of hook pieces 2, 2. Bolt insertion holes 3 are bored in the seat plate 1 at positions corresponding to the formwork mounting screw holes provided in the end plates of the foundation piles. The pair of hook pieces 2, 2 are erected in parallel to face the upper surface of the seat plate 1, and the hook grooves 2a, which are elongated in the circumferential direction of the seat plate, are provided with their opening sides facing in opposite directions. It is being

As shown in Figs. 3 and 4, the chucking cap B extends horizontally in the diametrical direction into the upper cylinder of the cylindrical body 5, which has a top plate 4 whose inner diameter is larger than the outer diameter of the foundation pile. An engaging suspension rod 6 is installed to penetrate through the cylinder 5, and its central portion is supported by a support 7 vertically disposed on the top plate 4. Further, on the upper surface of the top plate 4, a plurality of locking plates 8 having bolt holes 9 are provided protrudingly provided to connect auger joints C, which will be described below. In the figure, 10 is a reinforcing body provided to increase the rigidity of the lower end of the cylinder 5, and 10 is an air vent hole provided in the cylinder 5.

As shown in FIGS. 5 and 6, the auger joint C has a square shaft 13 on the top end of which is fitted into an auger rotation motor (not shown) on a base plate 12 that engages with the top plate 4 of the chucking cap. The column 14 provided
is erected and reinforced by ribs 15, 15, and the base plate 12 has an engagement hole 16 through which the engagement plate 8 protruding from the top plate 4 of the chucking cap passes through, and an engagement plate An anchoring body 18 having bolt holes 17 corresponding to the bolt holes 9 of 8 is provided.

As shown in FIG.
The bolt holes 9 and 1 of the fastening plate 8 and the fastening body 18 are inserted into the board 12 so that its upper part protrudes above the top surface of the board 12.
The bolt 19 is inserted into the hole 7 and the bolt 19 is tightened with a nut.

In order to use the device of the present invention configured as described above, first, as shown in FIGS. 8 and 9, attach the rotation cap A to the upper end surface of the foundation pile D using the screw hole of the bolt 20. Tighten and secure. On the other hand, the chucking cap B and the auger joint C are connected as described above and attached to the power device of the pile driving tower. Then, the foundation pile is lifted up and set upright in the sink hole excavated with an auger, and the chucking cap B is placed over the head of the foundation pile D and connected to the rotating cap A. The connection between the chucking cap B and the rotary cap A is as shown in FIG.
After inserting the rotating cap A into the cylindrical body 5 with the engaging rod 6 of the chucking cap B positioned between the When rotated relatively, the engagement hanging rod 6 enters into the hook groove 2a and engages with it.

Once the connection between chucking cap B and rotary cap A is complete, chucking cap B is rotated in the same direction via auger joint C, and rotation is applied to foundation pile D to proceed with the sinking work. It is. After sinking the foundation pile D, by slightly rotating the chucking cap B in the opposite direction, the engaging hanging rod 6 and the hooks 2, 2 will be disengaged, and in this state chuckling Cap B will now be pulled up. And the rotating cap A is bolt 2.
0 is removed, separated from foundation pile D, and used for sinking other foundation piles.

As explained above, the foundation pile chucking device of the present invention is arranged on the upper surface of the annular seat plate removably formed on the upper end surface of the foundation pile, with the open sides facing each other opposite in the circumferential direction of the seat plate. A rotary cap equipped with a pair of hook pieces, a cylindrical chucking cap with a horizontally extending engagement rod that can be engaged with the hook pieces, and a chucking cap that can be attached and removed from the upper surface of the chucking cap. The rotating cap is removable from the foundation pile, so it can be used repeatedly, and the coupling and separation of the rotating cap and chucking cap are This can be done by the relative rotation between the hook protruding from the top of the cap and the engaging suspension rod installed horizontally on the chucking cap.
The work is simple and quick, requiring no skill, and the connection is reliable and strong. In addition, since the auger joint is detachable from the chucking cap, it can be widely applied by preparing auger joints that are compatible with various types of power equipment of different sizes, reducing overall costs. It has many advantages, such as being able to achieve

[Brief explanation of drawings]

The drawing shows one embodiment of the device of the present invention.
Fig. 1 is a side sectional view of the rotating cap, Fig. 2 is a plan view of the same, Fig. 3 is a half-cut side view of the chucking cap, Fig. 4 is a partially cut-away plan view of the same, and Fig. 5 is of the auger joint. Fig. 6 is a partially cutaway side view, Fig. 6 is a plan view of the same, Fig. 7 is a partially cutaway side view showing the connecting cap and auger joint, and Fig. 8 is a view of the rotating cap fixed to the foundation pile. FIG. 9 is a side sectional view illustrating the engagement between the hook of the rotating cap and the engaging suspension rod of the chucking cap. A... Rotating cap, B... Chucking cap, C... Auger joint, D... Foundation pile, 1... Seat plate, 2... Hook piece, 4... Top plate, 5...
... Cylindrical body, 6 ... Engagement suspension rod, 8 ... Attachment plate, 12 ...
...Substrate, 13...Square shaft, 16...Engagement hole, 18...
...Anchoring body.

Claims (1)

[Scope of utility model registration request] A rotation cap is provided with a pair of opposing hooks on the upper surface of an annular seat plate that is removably formed on the upper end surface of the foundation pile, and the opening sides are opposite to each other in the circumferential direction of the seat plate. It is characterized by consisting of a cylindrical chucking cap in which an engaging suspension rod that can be engaged with a piece is horizontally installed, and an auger joint that is removably formed on the upper surface of the chucking cap.
Foundation pile checking device.