JPS5849238Y2 - Tip metal fitting for piles - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tip metal fitting for a pile that is intended to increase the strength and discharge mud while coating it on the wall surface of a pile burial hole.

When burying piles first, the applicant proposed a construction method in which the piles are sunk into the burying hole and then the lower ends of the piles are dug into the supporting ground by rotating the piles. Feather metal fittings for digging in various shapes are fixed to the lower end surface of the pile used.

However, since the above-mentioned feather metal fittings are usually fixed to an annular end plate provided on the lower end surface of the pile, the strength of the end plate and the feather metal fitting as a tip metal fitting must be expected to be low, and the thickness of the end plate must be reduced accordingly. There were problems such as the need to make the film thicker.

Feather fittings with mud discharge ports are also known,
There was no way to get some of the mud to stick to the hole walls, which made it difficult to fix the piles.

However, this idea involves fixing blade fittings radially from the center to the periphery on the lower surface of the disk-shaped support fitting, and providing through holes for discharging mud in the side wall of the cylindrical body fixed to the top surface of the support fitting. Since the end fitting for piles is made of aluminum, the strength is increased compared to the conventional end fitting with an annular end plate and a feather fitting.
Moreover, it became possible to apply the mud to the walls of the hole, thus solving the above-mentioned problems.

That is, to explain this invention with reference to an embodiment, on the lower surface of the disk-shaped support fitting 10, from the center toward the peripheral edge,
Three blade fittings 11 and 11 are individually attached radially and at equal intervals, and a cylindrical body 1 is attached to the upper peripheral edge of the square support fitting 10.
The lower end of 2 is fixed, and through holes 13, 13 are formed in the side wall of the cylindrical body 12.
This is used as a tip fitting for piles by drilling holes.

In this case, as shown in FIG. 1, the upper end of the cylinder 12 is fixed to the end plate 8 to form a pile.

This pile is placed in a pre-drilled hole as described above, and
When the lower end of the pile reaches the bottom of the hole, the pile is rotated, the bottom of the hole is excavated by the action of the feather fitting 11.11, and the lower end of the pile is driven into the supporting ground by driving the pile. It's about letting them do it.

The mud discharged by the excavation is guided from the gap between the wall of the hole in which the pile is buried and the outer surface of the cylinder 12 to the hollow side of the antibody through the through holes 13, 13.

Since a portion of the mud is applied to the hole wall by the outer surface of the cylindrical body 12, the end of the pile is firmly supported.

That is, according to this invention, the tip metal fitting for a pile is constructed by providing the feather metal fittings radially from the center to the peripheral edge on the lower surface of the disc-shaped support metal fitting. In comparison, it has the effect of increasing its strength.

As a result, it is possible to ensure that the piles penetrate into the supporting ground.

In the example, the inner ends of the wing fittings were aligned with the center of the support fittings and connected to each other, but it is not necessary to align them with the center of the support fittings. It is also possible to maintain a gap that does not hinder penetration into the ground.

Further, the shape of the blade fitting is not limited to the shape of the embodiment.

Further, since a through hole for discharging mud is provided in the side wall of the cylinder 12, mud can be applied to the hole wall, and the pile can be supported even more firmly.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of this invention, and FIG. 2 is a bottom view of the same. 10...Supporting metal fitting, 11...Blade fitting, 7...Pile body, 8...End plate, 9...
...Hollow part, 12...Cylinder body, 13...
・Through hole.

Claims (1)

[Scope of utility model registration request] In the metal fitting that is fixed to the lower end surface of the pile, feather metal fittings are provided radially from the center of the lower surface of the disk-shaped support metal piece to the peripheral edge, and a cylindrical body for connection with the pile is fixed to the upper surface of the disk-shaped support metal piece. , a tip metal fitting for a pile, which has a through hole for removing mud in the side wall of the cylindrical body.