JPH0218120Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an operating tool for suspending and rotating a cylindrical ready-made concrete pile or a steel pipe foundation pile.

``Prior Art'' Conventionally, this type of foundation pile operating tool was developed by the applicant and patented No. 1078926 (Japanese Patent Publication No. 56-6451) titled ``Foundation Pile Chucking Cap.'' There is. This is a channel in which an axial guide groove for guiding a protruding piece protruding from the outer peripheral surface of the upper end of the foundation pile and a circumferential engagement groove for engaging during rotation and for hanging are connected to the side wall of the cap. Fit this chucking cap onto the upper end of the foundation pile, guide the protruding piece at the upper end of the foundation pile into the guide groove, and rotate the cap when the protruding piece reaches the upper end of the guide groove. The projecting piece is positioned in the engagement groove and used for hanging, or is used to lower and erect the pile by applying rotation.

``Problem to be solved by the invention'' This invention aims to make the grasping and rotation of the foundation pile of this chucking cap more reliable and safe.

``Means for solving the problem'' The present invention is designed to be fitted externally to the upper end of a cylindrical foundation pile, and in addition to an external cylindrical operating body with guide grooves and engagement grooves carved into the side wall. An inner cylinder operating body having an engagement groove on the side wall is provided.

``Example'' As shown in FIG. 1, an operating piece 2 is installed on the upper end surface of a foundation pile 1 of a cylindrical ready-made concrete pile or steel pipe. The operating pieces 2 do not need to be continuous over the entire length as shown in Fig. 1, but may be separately protruding from the outer and inner sides of the upper end of the foundation pile 1. Can be set freely.

The operating tool includes an outer cylinder operating body 3 formed to be able to be fitted externally to the upper end of the foundation pile 1, and an inner cylinder operating body 4 formed to be able to be fitted internally to the upper end of the foundation pile 1. It is stuck to the wall plate 5.

As shown in FIGS. 2 and 3, the side wall of the outer cylindrical operating body 3, which is formed to be able to be externally fitted onto the upper end of the foundation pile 1, has an opening at the bottom for guiding the operating piece 2 at the upper end of the foundation pile 1. An axial guide groove 6 and a circumferential engagement groove 7 that engages when rotating and is used for suspension are provided in series. The number of guide grooves 6 and engagement grooves 7 is determined according to the operating piece 2.

In addition, a window hole 8 is provided in the side wall above the engagement groove 7 of the outer cylinder operation body 3 in order to discharge muddy water, earth and sand, air, etc. from inside the foundation pile 1 when the foundation pile 1 is lowered into the earth and sand.
will be established. This window hole 8 is not limited to the side wall of the outer tube operating body 3 and may be provided on the upper wall plate 5 as long as it is above the engagement groove 7.

The inner barrel operating body 4 is provided with an engaging groove 9 and a window hole 10 at locations corresponding to the guide groove 6, engaging groove 7, and window hole 8 of the outer barrel operating body 3, respectively. This engagement groove 9 opens downward and is set so that the operating piece 2 does not interfere with the guide groove 6 of the outer cylinder operating body 3 when it enters, but engages with the operating piece 2 together with the outer cylinder operating body 3 when rotating. do. Window hole 10
may be provided not only on the side wall but also on the upper wall plate 5, similar to the window hole 8 of the outer cylinder operating body 3.

A screw 12 for connecting to the rotating member 11 is carved in the center of the upper wall of the inner cylinder operating body 3.

"Function" This operating tool is connected to the rotating member 11, and the foundation pile 1
stand up, fit the outer cylinder operating body 3 into its upper end, fit the inner cylinder operating body 4 in, and enter the operating piece 2.
is guided through the guide groove 6 and the engagement groove 9, the operation piece 2 is positioned above the guide groove 6, rotated and positioned in the engagement groove 5, and then the foundation pile 1 is suspended.・Rotation is possible. When the operating tool is rotated, the operating piece 2 comes into contact with the sides of the engagement grooves 7 and 9, transmitting the rotational force from the rotating member 11, and lowering the operating tool into the excavated hole. When removing the operating tool from the erected foundation pile 1, rotate the operating tool in the opposite direction, position the operating piece 2 above the guide groove 6, and then lift the operating tool upward to remove it. can be done. Incidentally, the excavated hole may be excavated using either stirring equipment or an auger rod.

"Effects of the Invention" As mentioned above, the present invention consists of an outer cylinder operating body formed so that it can be fitted externally to the upper end of a cylindrical foundation pile, and an inner cylinder operating body formed so that it can be fitted internally to the upper end of a cylindrical foundation pile. The upper end of each of the cylinder operating bodies is fixed to the upper wall plate, and the outer cylinder operating body is engaged with an axial guide groove having an opening at the bottom that guides the operating piece located on the inner circumferential side of the upper end of the foundation pile when rotating. Further, the operation of a foundation pile is provided with a circumferential engagement groove for hanging, and an engagement groove is provided in the inner cylinder operation body to engage with an operation piece protruding toward the outer circumferential side of the upper end of the foundation pile when rotating. It is even more reliable and safe because the foundation pile is held and rotated by the outer cylinder operating body and the inner cylinder operating body. Note that when the operating piece at the upper end of the foundation pile is constructed as a single piece, not only is the installation work easier, but the strength of the operating piece is also increased compared to a cantilevered type.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a foundation pile suspended and rotated by the operating tool of the present invention, Fig. 2 is a perspective view of an embodiment of the invention, and Fig. 3 is a perspective view of the operating tool of the present invention attached to the foundation pile. The front view of the state shown in Fig. 4 is the − of Fig. 3.
FIG. DESCRIPTION OF SYMBOLS 1... Foundation pile, 3... Outer cylinder operating body, 4... Inner cylinder operating body, 5... Upper wall plate, 2... Operating piece, 6... Guide groove, 7... Engagement groove, 9... ...Engagement groove.

Claims (1)

[Scope of utility model registration request] An outer cylindrical operating body formed so that it can be fitted externally to the upper end of a cylindrical foundation pile, and an inner cylindrical operating body formed so that it can be fitted internally to the upper end of a cylindrical foundation pile are fixed at their respective upper ends to the upper wall plate. The outer cylinder operating body is connected to an axial guide groove which is open at the bottom and which guides the operating piece located on the outer circumferential side of the upper end of the foundation pile, and a circumferential engagement groove that engages when rotating and is used for suspension. 1. An operating tool for a foundation pile, characterized in that the inner cylinder operating body is provided with an engagement groove that engages an operating piece protruding toward the inner peripheral side of the upper end of the foundation pile when rotated.