JPH0419273Y2 - - Google Patents

Description

[Detailed description of the invention] <Field of industrial application> The present invention relates to a propulsion tube with a collar in which a collar is fitted into the socket part, and in particular to a propulsion tube with a collar provided with an injection hole through which sealing liquid can be injected at the outer edge of the collar. It is related to propulsion tubes.

<Prior art> In conventional propulsion pipes of this type, a ring concave groove is bored on the outer peripheral surface of the socket part of the concrete pipe, and a V-shaped ring groove is stamped from the outside on the outer edge of the collar. It was forming. Therefore, a V-shaped ring protrusion in cross section corresponding to the V-shaped ring groove was protrudingly provided on the inner circumferential surface of the outer edge of the collar.

When attaching the collar to the socket, the V-shaped ring protrusion is inserted into the ring groove of the socket, thereby fixing the collar to the socket.

<Problem to be solved by the invention> However, forming a sharp V-shaped ring groove (V-shaped ring protrusion) over the entire outer edge of a thick metal collar poses a problem in that pressing work is difficult. Ta. In addition, the V-shaped ring groove protruding from the inner peripheral surface of the outer edge of the collar is thin, the overall volume is small, and the height is not sufficient, so the V-shaped ring protrusion easily slips out of the ring groove once inserted. There were also problems.

The present invention relates to a completely new technique developed in view of these conventional problems.

<Means for solving the problem> The propulsion tube with a collar according to the present invention is a technology that fundamentally improves the above-mentioned conventional problems, and its gist is that a ring groove is formed on the outer circumferential surface of the socket part of a concrete pipe. At the same time, a convex ring is provided protrudingly on the inner peripheral surface of one side edge of the collar, and the convex ring is fitted into the ring groove by forcibly fitting the collar into the socket part. In the pipe, a sealing liquid injection hole for filling the space between the fitting surfaces of the collar and the socket part with sealing liquid is provided extending from the outer surface of the one side edge of the collar to the inner surface of the convex ring. It is something.

<Function> As described above, in the present invention, the collar is provided with a convex ring on the inner peripheral surface, and the injection hole is drilled through the front and back surfaces of the convex ring, so that the collar can be inserted into the socket. After the socket is fitted into the socket, sealing liquid can be injected between the convex ring and the socket through the injection hole, thereby completely sealing the convex ring and the socket so that they are mutually connected. It can be firmly joined together.

<Example> An example of the propulsion tube according to the present invention will be explained in detail with reference to the drawings. In FIG. 2 and a seal step 3 are formed.

Next, 4 is a collar, and a convex ring 5 is provided protruding from the inner peripheral surface of the outer edge of one side of the collar. Further, inside the convex ring 5, there is provided a sealing material holding portion consisting of two protrusions 6 provided at a predetermined interval. A sealing material 7 is fitted into this sealing material holding portion, and an injection hole 9 is formed extending from the inner surface of the convex ring 5 to the outer surface of the collar 4, and the sealing liquid 8 is poured through the injection hole 9 into the ring-shaped recess. The structure is such that it can be injected into the groove 2.

In the above embodiment, a sealing step 3 is formed at the outer peripheral end of the socket portion 1, and the sealing step 3 can be brought into contact with the sealing material 7. As shown in FIG. 10, and the sealing material holding portion and the sealing material 7 can also be deformed into shapes as shown in FIG. Furthermore, as shown in FIGS. 3A to 3E, a sealing material 11 is attached to a part of the convex ring 5 of the collar 4, and the sealing liquid 8 injected from the injection hole 9 as described above flows out from the ring-shaped groove 2. It is also possible to prevent this from happening.

A specific example of the collared propulsion tube according to the present invention will be described as follows.

In FIG. 1, the height of the convex ring 5 of the collar 4 is 3 mm, the distance between the collar 4 and the outer peripheral surface of the socket part 1 is 1 mm, and the lower end of the convex ring 5 is inclined. Furthermore, the depth of the ring-shaped groove 2 is 3 mm.
It was configured as

The collar 4 configured in this way is attached to the socket part 1.
At the beginning of the fitting process, the outer edge of the collar 4 on which the convex ring 5 was protruded expanded due to friction with the socket part 1, but when it was forced to fit further, the outer edge of the collar 4 expanded due to friction with the socket part 1. The collar 4 gradually advanced toward the center of the concrete pipe, and finally the convex ring 5 fell into the ring groove 2 of the socket part 1, and both were fitted.

Next, when the sealing liquid 8 is injected at a predetermined pressure through the injection hole 9, this sealing liquid 8 is filled in the groove 2 and between the collar 4 and the outer peripheral surface of the socket part 1.
This made it possible to integrally connect the two parts, prevent the collar 4 from slipping out from the socket part 1, and completely seal the surroundings of the socket part 1 and the collar 4 to create a watertight state.

<Effects of the invention> In the propulsion tube according to the invention, a ring concave groove is bored on the outer circumferential surface of the socket portion, and a convex ring is integrally formed on the inner circumferential surface of the collar. Since the collar is configured to fit into the socket part by meshing the ring groove and the convex ring, the collar can be securely fitted into the socket part, thereby preventing the collar from coming off. I can do it.
Furthermore, since an injection hole was drilled in the collar and the convex ring protruding from the collar, this part was made watertight by filling the sealing liquid from the injection hole into the ring groove and between the collar and the socket. As a result, the collar can be completely fitted into the socket portion and attached integrally, and the collar can be prevented from falling off from the socket portion.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a propulsion tube with a collar according to the present invention, and FIGS. 2 and 3 A, B, C, D, and E are sectional explanatory views of other examples, respectively. 1 is a socket part, 2 and 10 are ring grooves, 3 is a sealing step part, 4 is a collar, 5 is a convex ring, 6
is a protrusion, 7, 11 is a sealing material, 8 is a sealing liquid, 9
is the injection hole.

Claims (1)

[Scope of utility model registration request] A ring concave groove is provided on the outer circumferential surface of the socket portion of the concrete pipe, and a convex ring is provided protrudingly on the inner circumferential surface of one side edge of the collar, and the convex ring is formed by forcibly fitting the collar into the socket portion. In a propulsion tube with a collar, which is formed by fitting a ring into a groove, a sealing liquid injection hole for filling a sealing liquid between the mating surfaces of the collar and the socket is provided outside the edge of one side of the collar. A propulsion tube with a collar installed from the surface to the inner surface of the convex ring.