JPS637854Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improved idea for boundary piles for surveying, and its purpose is to quickly and accurately carry out survey restoration even in the event of a fire such as a wildfire.

To explain this embodiment with reference to the drawings, a pile body is made of a synthetic resin column-shaped trunk body 2 with a pointed portion 1 at the bottom end, and a metal or synthetic resin cap 5 with a circular recess 3 in the center of the top surface and a pointed recess 4 in the center is fixed to the top of the trunk body. Prior to burying the pile in the ground, the top 6 is fixed to the circular recess 3.
The structure is such that a metal center pin 7 having the same diameter as that of the pointed recess 4 is integrally attached to the pointed recess 4.

This project is a boundary pile for surveying purposes, and when buried underground as a boundary pile, a metal center pin 7 is integrally driven into the center of the cap on the top of the trunk body using the pointed recess 4. be. The center pin driven into the barrel body can be easily and reliably positioned at the center of the barrel body by the central cusp recess 4, and the top 6 of the pin is fitted into the circular recess 3 so that its surface becomes horizontal. Therefore, when hammering a pile to bury it in the ground, if you hit the top of the central pin, the impact force will effectively act on the pile body, and since the top will be parallel to the crown, the hammer head will be able to hit the top. The crown does not deviate, and the crown and the top of the body do not break due to even blows. In the event of a fire, the metal center pin 7 remains, ensuring the boundary position and allowing prompt restoration.

Conventional metal caps for boundary piles are destroyed in the event of a fire such as a forest fire, making the boundary unclear, but the present application ensures restoration, does not crack during driving, and allows the driving force to be effectively concentrated, making it possible to effectively concentrate the driving force into the pins. It does not cave in, has a suitable appearance as a boundary pile, does not break when compared to conventional resin piles, and is extremely inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the product of the present application before the center pin is driven in, FIG. 2 is a plan view, and FIG. 3 is a side view of the product with the center pin integrated. 1... Apex, 2... Trunk body, 3... Circular recess, 4... Apical recess, 5... Crown cap, 6... Apex, 7
...Metal center pin.

Claims (1)

[Scope of utility model registration request] A pile body formed by fixing a metal or synthetic resin cap 5 having a circular concave part 3 in the center of the upper surface and a pointed concave part 4 in the center to the top of a synthetic resin columnar trunk body 2 having a pointed part 1 at the lower end. In this boundary pile, a metal center pin 7 whose apex 6 has the same diameter as the circular recess 3 is integrally driven from the pointed recess 4.