JP3014507U - Hume tube with fitting collar - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention prevents the leak of fresh concrete during pipe making to prevent the weakening of the pipe, and also prevents the fresh concrete from adhering to the outer surface of the joint collar and the inner surface of the protruding portion. The purpose is to obtain a fume tube with a joint collar. According to the present invention, a joint collar is inserted into one end of a formwork, a pipe end forming wall of the casting is inserted into an intermediate part of the joint collar, and the concrete is rotated in the formwork which rotates together with the casting. In a fume tube with a joint collar that is formed by compacting and centrifugally compacting, a rubber ring is fitted to the base end of the joint collar, and the inner surface of the middle portion of the joint collar into which the pipe end forming wall of the casting enters. It is a fume tube with a joint collar, which is characterized in that a ridge rubber is provided around it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a fume tube with a joint collar.

[0002]

[Prior art]

 Conventionally, a fume pipe with a joint collar has a cylindrical joint collar inserted into one end of a mold for pipe making as shown in the manufacturing process chart of Fig. 3, and pipe ends are formed at both ends of the form. Set a casting with a wall, and while rotating the formwork together with the casting, put concrete into the formwork and compact it so that the joint collar can be integrally attached to one end of the fume pipe. Are molded.

[0003]

[Problems to be solved by the device]

 However, since the mold frame and the joint collar and the joint collar and the casting pipe end forming wall are separate members and can be attached to and detached from each other by sandwiching the demolding, they are produced from the above portion during pipe manufacturing. Part of the concrete leaks out, weakening the pipe at the leaking part, and the leaked concrete adheres to the outer surface of the joint collar and the inner surface of the part protruding from the pipe end of the collar. There was a problem that it had to be scraped off, cleaned and finished.

[0004]

[Means for Solving the Problems]

 According to the present invention, a joint collar is inserted into one end of a formwork, a pipe end forming wall of a casting is inserted into an intermediate part of the joint collar, and ready-mixed concrete is poured into the formwork that rotates together with the casting. In a Hummed tube with a joint collar formed by centrifugal compaction, a rubber ring is fitted to the base end of the joint collar, and a ridge rubber is formed on the inner surface of the intermediate portion of the joint collar forming the pipe end. It is intended to solve such a problem by arranging around.

[0005]

In the present invention, the rubber ring is fitted to the base end portion of the joint collar, and the ridge rubber is provided around the inner surface of the middle portion of the joint collar into which the pipe forming wall of the casting enters. Leakage of fresh concrete will be prevented.

[0006]

【Example】

 Embodiments will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a fume pipe with a joint collar of the present invention, and FIG. 2 is a partially enlarged sectional view showing the pipe manufacturing process.

In FIG. 2, a steel cylindrical joint color 2 is inserted into one end of a form 1 for making a Hume pipe. The joint collar 2 is preliminarily fitted with a rubber ring 3 having a U-shaped cross section on the entire circumference of the base end portion. The rubber ring 3 can be securely fitted and attached without using an adhesive or the like by elastically fitting the concave groove portion 3a to the base end portion of the joint collar 2.

Further, the joint collar 2 has a ridge rubber 4 around the inner surface of the intermediate portion into which the pipe end forming wall 5a of one casting 5 enters. The outer surface of the ridge rubber 4 contacts the pipe end forming wall 5a of the casting 5 and closes the gap between the pipe end forming wall 5a of the casting 5 and the joint collar 2.

Further, the other casting (not shown) is set, both castings are mounted on the rotating rollers of the pipe making machine (not shown), and the form 1 is rotated while the concrete is being rotated. Then, the fresh concrete is centrifugally compacted to form the fume pipe 6 with the joint collar 2. A rubber ring 3 and a ridge rubber 4 elastically close the space between the joint collar 2 and the formwork 1 and between the joint collar 2 and the pipe end forming wall 5a of the casting 5, respectively, so that leaking of fresh concrete is prevented. Be touched. In addition, 7 is a peripheral surface paragraph for connecting the joint collar 2 provided at the other end of the fume pipe 6 with the joint collar, and 8 and 8 are inner surfaces of the joint collar 2 to prevent the joint collar 2 from coming off. An anchor streak provided in a ring shape at 9 and a swelling rubber (water swelling rubber) ring 9 for preventing water leakage.

[0011]

[Effect of device]

 As described above, according to the present invention, the rubber ring is fitted over the entire circumference of the base end portion of the joint collar to prevent the fresh concrete from leaking to the outer surface of the joint collar during pipe making. A fume tube with a joint collar, which is aesthetically pleasing without the need for subsequent cleaning work, by preventing weakening of the pipe body in the collar portion and preventing the adhesion of fresh concrete to the outer surface of the joint collar. The effect that it can be obtained occurs.

A ridge rubber was circumferentially attached to the inner surface of the middle portion of the joint collar to block the gap between the joint collar and the pipe end forming wall of the casting to prevent leakage of fresh concrete from this portion during pipe production. Therefore, the pipe end on the joint collar side is prevented from becoming weak, and at the same time the fresh concrete is prevented from adhering to the inner surface of the part of the joint collar protruding from the pipe end. The effect is that a colored fume tube can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a fume tube with a joint collar of the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing the same pipe manufacturing process.

FIG. 3 is a partially enlarged cross-sectional view showing a conventional pipe manufacturing process.

[Explanation of symbols]

 1 is a formwork 2 is a joint collar 3 is a rubber ring 4 is a ridge rubber 5 is one casting 5a is a wall for forming a pipe end 6 is a fume pipe with a joint collar 7 is a peripheral section 8, 8 is an anchor bar 9 Swelling rubber (water swelling rubber) ring

Claims (3)

[Scope of utility model registration request] 1. A joint collar is inserted into one end of the formwork,
In a fume pipe with a joint collar in which a pipe end forming wall of a casting is made to enter an intermediate portion of the joint collar, and fresh concrete is put into the mold rotating together with the casting and centrifugally compacted to form the joint collar, A fume pipe with a joint collar, which is fitted with a rubber ring at the base end to prevent leakage of green concrete. 2. A joint collar is inserted into one end of the formwork,
In a fume pipe with a joint collar, in which a wall for forming a pipe end of a casting is made to enter an intermediate portion of the joint collar, and fresh concrete is put into the mold rotating together with the casting and centrifugally compacted to form the casting pipe. A fume tube with a joint collar, characterized in that a ridge rubber is provided around the inner surface of the middle of the joint collar into which the end forming wall enters so as to prevent leakage of green concrete. 3. A joint collar is inserted into one end of the formwork,
In a fume pipe with a joint collar in which a pipe end forming wall of a casting is made to enter an intermediate portion of the joint collar, and fresh concrete is put into the mold rotating together with the casting and centrifugally compacted to form the joint collar, A fume pipe with a joint collar, characterized in that a rubber ring is fitted to the base end portion, and a ridge rubber is provided around the inner surface of the intermediate portion of the joint collar forming the pipe end.