JPS6131096Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a mechanical mass made of synthetic resin or the like.

Figure 1A shows a cross-sectional view of a conventional example of the Kaisyomasu.This Kaisyomass has a mass 2 for expansion/contraction treatment connected to the mass body 1 with an additional link 3 and stacked, so that the mass body can be maintained in winter. Efforts are being made to prevent frost heaving. In other words, when the surrounding soil freezes,
A force is applied to the lifting mass, and the extension ring 3 receives the expansion/contraction processing mass 2 above it, fixedly supports it in the recess 31, and is slidably inserted into the expansion/contraction processing mass 2 below. As a result, the additional ring 3 rises as shown in FIG. In addition, 1a is a lid, and 21 is a receiving part formed in the expansion/contraction processing mass 2 to support the additional ring 3.

However, the conventional method uses pins 4 to connect the extension ring 3, the expansion/contraction processing mass 2, and the mass body 1, resulting in poor construction efficiency, such as the need to process pin holes during construction, and If the pin holes are misaligned, the mass receiving recesses 11 and 31 may be damaged, and furthermore, if the frost heaving distance becomes large, the additional ring may come off from the expansion/contraction processing mass.

The present invention was made in order to eliminate the above-mentioned drawbacks of the conventional method, and by providing a protrusion on the circumferential surface of the lower body of the expansion/contraction processing mass, the connection with the additional ring or the mass body can be made by connecting the extension ring or the mass body to the receiving recess. It is an object of the present invention to provide a construction method that can increase construction efficiency compared to conventional ones by having a construction in which the U-shaped connector is passed over the above-mentioned protrusions.

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

In FIG. 2, reference numeral 5 denotes a mass for expansion and contraction, which has an annular shape consisting of an upper large-diameter portion 5a and a lower small-diameter portion 5b, and has an inward protruding edge 51 formed around the entire circumference at the upper end. , a protrusion 5 is provided on the outer peripheral surface of the small diameter portion 5b.
A circumferential groove 53 having a predetermined width is formed between the large diameter portion 5a and the lower surface of the large diameter portion 5a. Reference numeral 54 denotes a water-stopping protrusion, which is provided to protrude downward from the lower end surface of the expansion/contraction processing mass 5.

In addition to the receiving recess 31, the additional ring 3 has a plurality of stopper pieces 32 protruding in the circumferential direction on the outer peripheral surface of the lower end as shown in FIG.
The projecting edge 5 is made so that it does not hit the projecting edge 51 of the expansion/contraction processing mass 5 and become unable to be inserted into the expansion/contraction processing mass 5.
1 has a plurality of notches 511 formed therein for passing the stopper pieces 32, as shown in FIG. 3B.
Therefore, the additional ring 3 is inserted into the expansion/contraction processing mass 5 until it reaches the stepped portion, with each of its stopper pieces 32 aligned with the corresponding notches 511. After inserting, rotate the additional ring 3 slightly. The extension ring 3 and the expansion/contraction processing mass 5 stacked thereon are arranged so that the lower end of this extension/contraction processing mass 5 is connected to the receiving recess 3 of the extension ring 3.
1, the U-shaped connector 6 is spanned over the upper surface of the protrusion 52 and the lower surface of the receiving recess 31 at a plurality of locations to connect them. The mass body 1 and the expansion/contraction processing mass 5 are connected in the same manner by a connecting tool 6.

In this configuration, when the ground rises due to freezing of earth and sand, the extension ring 3 slides upward with respect to the expansion/contraction processing mass 5 as in the conventional case, but the stroke S
Since the stopper piece 32 comes into contact with the protruding edge 51 when the stopper piece 32 is raised by the same amount, there is no fear that the additional ring 3 will come off from the expansion/contraction processing mass 5.

As described above, according to the present invention, the expansion/contraction processing mass and the extension ring or mass body are composed of a protrusion formed on the lower outer peripheral surface of the expansion/contraction processing mass, and an extension ring or mass that receives the lower end of the extension/contraction processing mass. They can be connected by simply passing the U-shaped connector over the receiving recess of the main body and fastening the two together. Unlike conventional pin connection methods, there is no need to create pin holes during construction. Construction efficiency can be increased compared to conventional methods.

[Brief explanation of the drawing]

Figure 1A is a vertical cross-sectional view of a conventional example of Kaisho Masu.
Figure 1 (b) is a vertical cross-sectional view showing the above-mentioned Kaishomasu subjected to frost heave action, Figure 2 is a half longitudinal sectional view of an embodiment of the Kaishomass according to the present invention, and Figure 3 (a) is the extension ring shown in Fig. 2. The bottom view and FIG. 3B are top views of the expansion/contraction processing mass in FIG. 2. DESCRIPTION OF SYMBOLS 1...Mass body, 3...Additional ring, 5...Expansion processing mass, 6...Connector, 11, 31...Receiving recess, 32...Stopper piece, 51...Protrusion, 52
... protrusion, 511 ... notch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a Kaisho mass comprising a mass body, a mass for expansion/contraction processing, and an extension ring, a protrusion is provided around the lower outer peripheral surface of the mass for expansion/contraction treatment; The mass body or the additional ring is
The mass main body and the opening or the receiving recess formed at the upper part of the extension ring and receiving the lower end of the expansion/contraction processing mass are connected by a U-shaped connector extending over the protrusion. Characterized by Kaishiyomasu. (2) A plurality of stopper pieces are protruded outward along the circumferential direction of the lower end of the extension ring, and a protruding edge having a plurality of notches through which the stopper pieces are passed is provided at the upper end of the expansion/contraction processing mass. The system according to claim (1) of the utility model registration claim is characterized in that: