JP2565445Y2 - Joint structure of U-shaped groove with socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention belongs] The present invention relates to a joint structure of a U-shaped groove with a socket.

[Conventional technology]

Conventionally, the joint structure in this type of U-shaped groove with socket is
As shown in FIG. 4, a socket portion B is provided at one end of the channel main body A.
The spigot portion C is formed at the other end, and the connection method is such that the spigot portion C is fitted to the socket portion B by bringing the joining end faces b and c thereof into contact with each other. A configuration in which a gap E between the outer peripheral surface of the spigot portion C and the inner peripheral surface of the socket portion B is filled with a silicone resin caulking material D to maintain water tightness and connected thereto, As disclosed in JP-A-94719, joint grooves are formed on the joint end surface of the step portion of the socket portion and the joint end surface of the spigot portion, and the elastic cushion material bonded and fixed to one joint groove is compressed into the other joint groove. With a structure that is connected by mating, or
As in 195372, without providing the joint groove,
There is disclosed a structure in which an elastic joint material fixed to one joint end face is connected to the other joint end face in a pressure-contact state.

However, the conventional structure shown in FIG. 4 is bonded and fixed to the gap E between the outer peripheral surface of the spigot portion C and the inner peripheral surface of the socket portion B with the caulking material D. Little freedom in direction. Therefore, there is a possibility that the socket portion B or the spigot portion C may be broken or damaged when the ground unequally subsides, and the caulking material D cannot follow the inclination of the one waterway main body A even if it is not damaged. However, there is a risk that water may leak due to peeling at a portion where displacement is large, and that the cost of the caulking material D is high due to the large amount of use.

In this regard, Japanese Utility Model Application Laid-Open No. 58-94719 and Japanese Utility Model Application Laid-Open No.
In both cases, the elastic cushioning material is interposed between the joint end faces, so that both have adaptability to the displacement at the connecting portion of the two waterway bodies due to uneven settlement of the ground, etc. However, there is a problem that it is easy to separate from one of the joining end faces, and the effect of preventing water leakage is lost.

Japanese Utility Model Laid-Open Publication No. 57-197574 discloses a joint of a box kamabat comprising a concave portion and a convex portion, wherein the packing formed in a ring shape made of an elastic member at a substantially intermediate point in the projecting direction of the convex portion. A joint comprising a socket and a spigot as disclosed in Japanese Patent Application Laid-Open No. Sho 59-73665; A hot-melt packing material is loaded between the inner peripheral surface and the outer peripheral surface of the spigot portion, and the hot-melt packing material is heated and melted by applying an electric current to a current-carrying heating element disposed therein so as to be completely sealed. Is disclosed.

[Problems to be solved by the invention]

However, the one disclosed in Japanese Utility Model Laid-Open No. 57-197574 is a joint composed of a concave portion and a convex portion, and as shown in FIG.
The outer peripheral surface of the convex portion is located at a position close to the inner peripheral surface of the concave portion. Therefore, when one of the box culverts is displaced, the above-mentioned portions are in direct contact with each other, so that only a small displacement can be made. When a large displacement occurs, the contact portion is broken or damaged. There is such a problem. Further, the structure disclosed in JP-A-59-73665 is a configuration in which a hot melt packing material is melted by heating, and the joint space is completely sealed by the melted hot melt packing material. While the degree of freedom in the bending direction is reduced, there are problems such as installation of current-carrying equipment, transportation of current-carrying equipment to joints, and prolonged working time in a low-temperature environment in a cold season.

[Means for solving the problem]

The present invention has been made in order to solve the above-mentioned conventional problems, and has high adaptability to displacement at a connecting portion of the two waterway main bodies at the time of uneven settlement of the ground, and has a structure in which the packing and the joint groove are formed. The purpose of the present invention is to provide a seal which can be performed by a simple operation while improving the sealing performance by complementing with the joint material filled in the socket. The gist of the present invention is to provide a socket formed at one end of the U-shaped groove. In this department, this U
When the spigot portion formed at the other end of the U-shaped groove connected to the U-shaped groove is fitted, the spigot portion is located between the inner peripheral surface of the socket portion and the outer peripheral surface of the spigot portion. A rod-shaped elastic packing is interposed at an intermediate position to form a gap on both sides thereof, and a joint groove formed along the inner periphery of the joint end surface of the spigot portion is filled with joint material and connected. In the joint structure of U-shaped groove with socket.

[Embodiments of the invention]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS. 1 to 3. In the drawings, reference numeral 1 denotes a U-shaped concrete U-shaped groove (hereinafter referred to as a waterway main body) having a U-shaped cross section.
A socket part 2 is formed at one end, and a spigot part 3 large enough to fit into the socket part 2 is formed at the other end, and a joint end face 3b of the spigot part 3 is joined along the inner periphery. Joint grooves 5 for material filling are formed. Numeral 4 denotes a rod-shaped elastic packing made of an elastic material such as synthetic rubber and having a hollow cross-section having a rectangular cross section, and disposed between the outer peripheral surface 3a of the spigot 3 and the inner peripheral surface 2a of the socket 2. It was dressed.

In the illustrated embodiment, the rod-shaped packing 4 is slightly longer than the length of the outer peripheral surface 3a of the spigot portion 3 in order to facilitate the work. Numeral 6 denotes a filler for filling the joint groove 5 for filling joint material for water stopping. As the filling material 6, a mortar or a caulking material made of silicone resin when it is necessary to increase the water stopping effect is used. use.

Therefore, when laying the waterway main body 1 with a socket, the socket portion 2 of the waterway main body 1 configured as described above in a factory or the like and the spigot portion 3 of the waterway main body 1 connected to the waterway main body 1 face each other. To place. Then, the rod-shaped elastic packing 4 is held with its both ends at the outer peripheral surface 3a of the spigot portion 3.
The spigot part 3 is lifted together with the rod-shaped elastic packing 4 and fitted into the socket part 2, and the joint end face 3b of the spigot part 3 and the joint end face 2b of the socket part 2 abut each other. Thereafter, a filler 6 such as mortar is filled in the joint groove 5 formed between the joint end face 3b of the spigot part 3 and the joint end face 2b of the socket part 2, and the surface is smoothed. , Packing 4 projecting above the joint
Cut off the part. And in the same way, multiple waterway bodies
The waterway is completed by connecting 1,1.

Since the rod-shaped elastic packing 4 is interposed between the socket portion 2 and the spigot portion 3 at a substantially intermediate position, the outer peripheral surface 3a of the spigot portion 3 and the inner peripheral surface of the socket portion 2 are provided. A gap S is formed on both sides of the rod-shaped packing 4 between the gasket 2a. Therefore, even if the ground unequally subsides and one of the waterway main bodies 1 subsides, the socket part 2 and the other spigot part 3 remain in the rod-like elastic packing 4.
With the fulcrum as a fulcrum, it is bent and displaced within the range of the gap S before and after the fulcrum without impairing the sealing performance. Even if the water-stopping filler 6 filled in the joint groove 5 is partially peeled off from the joint end faces 2b, 3b, the packing 4 complements the water-stopping effect, so that the water leakage preventing effect is maintained.

[Effect of the invention]

The joint structure of the U-shaped groove with a socket according to the present invention, as described above, has a spigot portion formed at the other end of the U-shaped groove connected to the U-shaped groove in a socket formed at one end of the U-shaped groove. At the time of fitting, a rod-shaped elastic packing is interposed between the inner peripheral surface of the socket portion and the outer peripheral surface of the spigot portion at a substantially intermediate position of the fitting portion to form gaps on both sides thereof. Further, since the joint groove is formed along the inner periphery of the joint end surface of the spigot portion and is filled with joint material, the joint portion is double-sealed by the elastic packing and joint material, The water stopping effect is significantly improved. In addition, even when the ground unequally subsides, the connecting part can be displaced following the unequal subsidence by bending within the range of the gap before and after the connecting part with the rod-shaped elastic packing as a fulcrum, Even if a part of the joint material peels off due to this displacement, the packing complements the sealing performance, so that it is possible to reliably prevent water leakage at the connection part.In addition, since the amount of joint material used is small, material costs are reduced. There are various effects such as being cheap.

[Brief description of the drawings]

FIG. 1 is a perspective view of a connected state of a U-shaped groove with a socket according to the present invention, FIG. 2 is a partial transverse sectional view of a main part, FIG. 3 is a longitudinal sectional view of the same, FIG. It is a partial cross-sectional view of a character groove. 1 ... water channel main body, 2 ... socket part, 2a ... inner peripheral surface, 2b
…… Joint end face, 3 …… Spigot part, 3a …… Outer peripheral face, 3b
…… Joint end face, 4… Packing, 5… Joint groove, 6…
Jointing material.

Continuation of the front page (56) References JP-A-59-73665 (JP, A) Photographs of the specification and drawings attached to the application form of Japanese Utility Model Application No. 60-71826 (Japanese Utility Model Application No. Sho 61-188628) were taken. Microfilm (JP, U) Japanese Patent Application No. 56-84712 (Japanese Utility Model Application No. 56-190404) Photograph of the contents of the specification and drawings attached to the application form Microfilm (JP, U) which photographed the contents of the specification and drawings attached to the application form No. 58-94719.

Claims (1)

(57) [Scope of request for utility model registration] In a socket formed at one end of a U-shaped groove,
When the spigot formed at the other end of the U-shaped groove connected to the U-shaped groove is fitted, the spigot is located between the inner peripheral surface of the socket and the outer peripheral surface of the spigot. A rod-shaped elastic packing is interposed at a substantially intermediate position to form a gap on both sides thereof, and a joint groove is formed along the inner periphery of the joint end face of the spigot portion, and the joint material is filled and connected. Joint structure of U-shaped groove with socket.