JPH1193116A - Water pipe bridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily connect mutual water pipes without welding and give a presentable appearance to the whole view by improving the appearance of the connected part. SOLUTION: When water pipes 3 are connected together, the front ends of the connecting parts 11 of both water pipes 3 are inserted into an inner ring 15 to oppositely arrange them at first. Then, first and second connection housings 8, 9 are disposed at the outer peripheral side of both connecting parts 11. In this time, respective fixing projections 18 of the first and second connection housings 8, 9 are fitted to engaging grooves 12 of respective connecting parts 11. Bolts 22 are inserted in respective insertion holes 23 of the connection parts 21 and the front ends of the bolts 22 are screwed in the screw holes 24 of the connection parts 20. In this way, the first and second connection housings 8, 9 are connected and fixed to each other at both sides and hence, the water pipes 3 are connected to each other so as not to get out of place.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water pipe bridge constructed by connecting a plurality of water pipes in a longitudinal direction.

[0002]

Water pipe bridges are usually provided along and along the side of the bridge to carry clean, medium (such as industrial) or sewage water. As a water pipe used for this type of water pipe bridge, a steel pipe is generally used in terms of strength and the like. When a water pipe made of a steel pipe is used, rust is a problem, and therefore, a steel pipe having an inner surface and an outer surface coated with a resin, for example, nylon, is conventionally used.

[0003] As a method of coating nylon, for example, there is a fluid immersion coating method. The fluid immersion coating method is generally performed as follows. That is, by blowing air from the bottom of the tank containing the nylon powder into the tank through the perforated plate, the nylon powder is brought into a floating flow state in the tank. In this floating nylon powder,
When a steel pipe which is an object to be heated heated to about 260 ° C. is inserted, the nylon powder in contact with the inner and outer surfaces of the steel pipe melts and adheres. Thereafter, the steel pipe is taken out of the bath and cooled. Thereby, the inner surface and the outer surface of the steel pipe can be coated with nylon.

When a water pipe bridge is constructed by using a plurality of water pipes having such a nylon coating, it is necessary to connect the water pipes. For connecting a plurality of water pipes, it is conceivable to weld the ends of adjacent water pipes as they are. However, in such a case, there is a problem that a portion where the nylon coating is melted by heat at the time of welding is generated, and this portion causes rust.

Therefore, conventionally, the following method has been considered. A stainless steel connection pipe is welded to the longitudinal end of the steel pipe, and a nylon-coated connection pipe is used as a water supply pipe. When connecting water pipes having such a configuration, adjacent connection pipes are connected by welding. In such a configuration,
Since the connection pipe of the portion to be welded is made of stainless steel, even if the portion coated with nylon is melted by the heat during welding, it is possible to suppress generation of rust.

However, when such a water pipe is used, there are the following disadvantages. First, when joining a steel pipe and a stainless steel connection pipe, different metals are welded to each other, so that it is difficult to weld, and it is hard to say that it is a preferable method for rust prevention. In addition, the welding operation requires not only skill but also labor compared to bolting and the like, and it is particularly difficult to perform the welding operation on site.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to easily connect water pipes without welding, and to improve the appearance of the connection part. To provide a water pipe bridge that can improve the overall appearance.

[0008]

In order to achieve the above object, a water pipe bridge according to the present invention has a connecting pipe portion having an engaged portion formed on an outer peripheral portion at an end in a longitudinal direction, A plurality of water pipes arranged so as to be continuous in the longitudinal direction, each having a substantially semicircular cross section, and covering the outer peripheral side of the two adjacent connection pipe parts of the two adjacent water pipes. And a pair of split first and second pairs having engaging portions at both ends thereof for engaging the respective engaged portions of the connection pipe portions to prevent the water pipes from coming off. A second connection housing, a seal member provided between an inner peripheral portion of the first and second connection housings and an outer peripheral portion of the two connection pipe portions, and the first and second connections; And a plurality of fixing members for connecting and fixing the housing for both sides thereof. It is an butterfly.

In the above configuration, when connecting water pipes adjacent to each other in the longitudinal direction, first, a state in which a sealing member is arranged on the outer peripheral side of both adjacent connection pipe portions of both adjacent water pipes. Then, the first and second connection housings are arranged on the outer peripheral side of the both connection pipe portions so as to cover them, and each engagement portion of the first and second connection housings is connected to both connection pipe portions. Is engaged with each of the engaged portions. And
By connecting and fixing the first and second connecting housings with fixing members on both sides thereof,
Both water pipes adjacent to each other can be connected in a retaining state.

In this case, it is preferable that the connecting pipe portion of the water pipe is welded to an end of the main body of the water pipe. In the case of such a configuration, before the connection pipe portion is welded to the main body portion, by forming an engaged portion or the like on the connection pipe portion, the connection pipe portion can be easily processed. Also,
It is possible to make the wall thickness of the connecting pipe different from the wall thickness of the main body.

It is preferable that an inner ring for holding the seal member is provided on the inner peripheral portion of the first and second connecting housings.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, FIG. 2 shows an external view of the water pipe bridge 1. This water pipe bridge 1 is provided along the side of a bridge 2 provided so as to straddle a river,
A plurality of water pipes 3 and 4 are connected so as to be continuous in the longitudinal direction. Both ends in the longitudinal direction of the water pipe bridge 1 are fixed at fixing portions 5 and 6, respectively. Of the water pipes 3 and 4, the water pipe 4 arranged substantially at the center of the water pipe bridge 1 is provided with an air vent valve 7 at the highest position.

Now, the water pipes 3 and 3 which are adjacent in the longitudinal direction will be described.
The water supply pipes 3 and 4 are connected by the following connection structure using first and second connection housings 8 and 9 which form a pair. Here, the connection structure between the water pipes 3 and 3 will be described as a representative.

As shown in FIGS. 1 and 3, each water pipe 3 is formed by connecting a steel pipe connecting pipe section 11 to both ends of a steel pipe main body section 10 by welding. I have.
As the connection pipe part 11, one that is thicker than the thickness of the main body part 10 is used. On the outer peripheral portion of the connection pipe portion 11,
An engagement groove 12 forming an engaged portion is formed in a ring shape at a portion on the main body portion 10 side, and a concave portion 13 is formed on a tip end side opposite to the main body portion 10 side. The water pipe 3 having such a configuration is coated with nylon on the inner surface and the outer surface in a state after the connection pipe section 11 is connected to the main body section 10.

The ends of the adjacent connecting pipes 11, 11 of the adjacent water pipes 3, 3 are inserted into the short cylindrical inner ring 15 from both sides. Two annular seal member mounting grooves 16 are formed in the inner peripheral portion of the inner ring 15, and O-rings 17 as seal members housed and held in the respective seal member mounting grooves 16 are connected to the respective connection pipes. It is in close contact with the outer peripheral surface of the concave portion 13 of the portion 11. Inner ring 15
Is also made of steel pipe and has an inner and outer surface coated with nylon.

The first and second connecting housings 8, 8 are provided on the outer peripheral sides of the adjacent connecting pipes 11, 11 of the adjacent water pipes 3, 3 so as to cover the entire inner ring 15. 9 are arranged. These first and second
The connecting housings 8 and 9 have a semi-circular cross section along the outer peripheral surface of the connecting pipe portion 11, and engaging projections 18 forming engaging portions are integrally provided at both ends. Each of the engaging projections 18 is engaged with the engaging groove 12 of each connection pipe 11.

The first and second connecting housings 8 and 9 are provided with receiving recesses 19 for receiving the inner ring 15 in the inner peripheral portion thereof, and connecting portions 20 and 21 are provided on both left and right outer sides.
Are connected by welding. The connecting portions 20 and 21 are opposed from above and below. For example, five stepped insertion holes 23 through which bolts 22 constituting a fixing member are inserted are formed in each of the lower connecting portions 21 of the connecting portions 20 and 21, and each of the upper connecting portions is formed. The part 20 includes a bolt 22
Screwed into the screw hole 24
Are similarly formed. Thus, each insertion hole 23
Are screwed into the corresponding screw holes 24, whereby the first and second coupling housings 8,
9 are connected and fixed on both sides thereof. These first
The second connection housings 8 and 9 are also made of steel pipe, and have inner and outer surfaces coated with nylon.

Here, when connecting the water supply pipes 3 and 3, it is performed as follows. First, connect the two water pipes 3, 3
Of the connecting pipes 11 and 11 in the O-ring 1
7 is relatively inserted from both sides into the inner ring 15 on which the inner ring 15 is mounted. And, on the outer peripheral side of both connecting pipe portions 11, 11,
The first and second connection housings 8 and 9 are arranged so as to cover the entire inner ring 15. At this time, the respective engaging projections 18 of the first and second coupling housings 8 and 9 are engaged with the engaging grooves 12 of the respective connection pipes 11. Then, the bolts 22 are inserted into the respective insertion holes 23 of the connecting portion 21, and the tips of the bolts 22 are screwed into the screw holes 24 on the connecting portion 20 side. Thereby, the first and second connecting housings 8 and 9 are connected and fixed at both side portions thereof, and both the water pipes 3 and 3 are connected.
Are connected in a state where they are prevented from falling off.

In this case, the screw hole 24 of the connecting portion 20 is formed in a form in which the upper portion is closed, and the bolt 22 is screwed from below, so that water hardly enters the screw hole 24. At the same time, it is difficult for water to collect.

The water pipe 4 provided with the air vent valve 7 is also not shown in detail, but the main body 2 made of steel pipe is not shown.
The connecting pipe 11 is welded to both ends in the longitudinal direction of No. 5 by welding, and the inner surface and the outer surface are coated with nylon. The connection between the water pipes 4 and 3 is performed in the same manner as the connection between the water pipes 3 and 3. Further, in the water pipe bridge 1, protection fences 26 for preventing intrusion are attached near the fixed portions 5 and 6 at both ends.

According to the embodiment described above, the water pipes 3 and 3,
Alternatively, when connecting the water pipes 3 and 4, the first and second connection housings 8 and 9 are used, and these are connected and fixed with bolts 22, so that the water pipes 3 and 3 or the water pipe 3 are connected. 4 can be connected. Therefore, the connection operation can be easily performed as compared with the case where the connection of the water pipes is performed by welding.

Further, since the connection is not welded, even if the water supply pipes 3 and 4 are coated with nylon, there is no possibility that the nylon coated portion is melted. Therefore, the connection structure of this embodiment is
The water pipes 3 and 4 can be used irrespective of whether or not a rust-proof coating such as nylon is applied.

Further, in the present embodiment, the connection is made by using the split first and second connection housings 8 and 9 so that the appearance of the connection portion can be improved and the water pipe bridge 1 can be improved. There is also an advantage that the overall appearance can be improved. Moreover, since the connecting bolts 22 are not exposed, the appearance can be further improved.

The connecting pipe 11 of the water pipe 3 is formed separately from the main body 10, and the connecting pipe 11 of the water pipe 4 is formed separately from the main body 25. Since it is configured to be joined to the parts 10 and 25 by welding, before welding the connecting pipe part 11 to the main bodies 10 and 25,
By forming the engagement groove 12 and the concave portion 13 in the connection pipe portion 11, the connection pipe portion 11 can be easily processed. By the way, when the engagement grooves 12 and the recesses 13 are formed at the ends of the main bodies 10, 25, the large main bodies 10, 2
5 is difficult to process.

Further, the connecting pipe portion 11 is provided with the main body portions 10 and 25.
Are separately formed, the thickness of the connection pipe portion 11 can be made different from the thickness of the main body portions 10 and 25. In the case of the present embodiment, since the connecting groove 11 and the recess 13 are formed in the connecting pipe 11, the connecting pipe 1
Although it is necessary to increase the thickness of the connection pipe 1, the thickness of the connection pipe section 11 can be easily made larger than the thickness of the main body sections 10 and 25. Along with this, it is possible to eliminate the necessity of increasing the thickness of the water pipes 3 and 4 as a whole.

Further, since the inner ring 15 for holding the O-rings 17 is provided on the inner peripheral portions of the first and second connecting housings 8 and 9, the water can be supplied from the water pipes 3 and 4 to the outside. Water leakage and intrusion of water from the outside can be favorably prevented.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. The connection pipe section 11 of the water supply pipes 3 and 4 can be provided integrally with the main body sections 10 and 25. In addition, the connecting pipe portion 11 is provided with an engaging convex portion as an engaged portion, and the first and second coupling housings 8 and 9 are provided with engaging portions which engage with the engaging convex portions. May be provided.

The width of the engaging groove 12 in the connecting pipe 11 is set to be slightly larger than the width of the engaging projection 18 so that the connecting pipe 11 and the first and second connecting housings 8 are connected to each other. , 9 can be relatively slidable.

First and second coupling housings 8, 9
May be made by casting.

[0030]

As is clear from the above description, according to the present invention, the following effects can be obtained. Claim 1
According to the water pipe bridge, the first and second connecting housings having a semi-circular cross section are used to connect the water pipes by connecting and fixing these with fixing members. As compared with the case where the water pipes are connected to each other by welding, the connection work can be easily performed, and the appearance of the connection portion can be improved, and the appearance of the entire water pipe bridge can be improved.

According to the water pipe bridge of the second aspect, since the connecting pipe portion of the water pipe is connected to the main body of the water pipe by welding, the connection pipe is welded to the main body before welding. Forming the engaged portion or the like in the pipe portion facilitates processing of the connection pipe portion. Further, the connecting pipe portion can be made different from the thickness of the main body portion.

According to the water pipe bridge of the third aspect, the first and second water pipe bridges.
The inner ring for holding the seal member is provided on the inner peripheral portion of the connecting housing of (1), so that water leakage from the water pipe to the outside and intrusion of water from the outside can be favorably prevented.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part showing one embodiment of the present invention.

FIG. 2 is an external perspective view in a use state.

FIG. 3 is a cutaway front view of a main part.

FIG. 4 is a longitudinal side view taken along line AA in FIG. 3;

[Explanation of symbols]

1 is a water pipe bridge, 3 and 4 are water pipes, 8 and 9 are first and second connecting housings, 10 is a main body, 11 is a connecting pipe, 12
Is an engagement groove (engaged portion), 15 is an inner ring, 17 is an O-ring (seal member), 18 is an engagement protrusion (engagement portion), 20,
Reference numeral 21 denotes a connecting portion, 22 denotes a bolt (fixing member), 24 denotes a screw hole, and 25 denotes a main body.

Claims (3)

[Claims] 1. A plurality of water supply pipes having a connection pipe portion having an engaged portion formed on an outer peripheral portion at an end portion in a longitudinal direction, and a plurality of water supply pipes arranged so as to be continuous in the longitudinal direction. Each of the water pipes has a semi-circular shape, and is disposed on the outer peripheral side of the connecting pipe sections adjacent to each other so as to cover them. A pair of split first and second connecting housings having an engaging portion that engages with the first and second water pipes to prevent the two water pipes from coming off; A sealing member provided between a peripheral portion and an outer peripheral portion of the both connection pipe portions; and a plurality of fixing members for connecting and fixing the first and second connection housings on both sides thereof. Water pipe bridge characterized by the following. 2. The water pipe bridge according to claim 1, wherein the connecting pipe is welded to an end of the main body of the water pipe. 3. The water pipe bridge according to claim 1, wherein an inner ring for holding a seal member is provided on an inner peripheral portion of each of the first and second connecting housings.