JPH11132366A - Multiple tube unit - Google Patents

Abstract

(57) [Summary] [Problem] To provide a multiple pipe unit that can be transported and piped in a state where a plurality of protective pipes are bound, and is excellent in pipe workability at a construction site. A plurality of tubes (13) in a parallel state are bound together while being inserted into respective holes of spacers (11, 11 ') each having a plurality of holes, and a collar is attached to the one spacer (11). 12, one end of the collar 1
The other end of 2 is a multiple tube unit 1 'which is a receiving port for connecting an adjacent spacer having the same shape as the other spacer 11'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-tube unit in which a plurality of protection tubes used for laying a plurality of power cables and communication cables buried underground in parallel are united. Things.

[0002]

2. Description of the Related Art Power cables and communication cables buried underground are inserted into protective tubes in order to prevent damage from groundwater. As a piping method of the protective tube, there is a single tube collecting system in which a large number of single tubes through which cables are inserted are arranged in parallel.

As shown in FIG. 11, the single pipe assembly type is a method of assembling a plurality of single pipes p at a construction site using a spacer s provided with a plurality of holes. In this single tube collecting method, a watertightness of the connection portion is secured by mounting a plug cap c at one end of the single tube p and mounting a packing such as rubber in the plug c.
In addition, there is an advantage that the other end of the single tube p does not fall out of the insertion cap c due to ground fluctuation because there is room to move within the insertion cap c.

[0004] However, in the single tube assembly method, the assembling work at the construction site requires a lot of man-hours. Such a construction method has a disadvantage that it is not possible to meet recent demands for shortening the construction period, saving labor, and reducing costs.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, and enables transportation and piping in a state where a plurality of protective tubes are bundled. The object of the present invention is to provide a multi-tube unit having excellent performance.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a plurality of tubes in a parallel state are bound together with each end inserted into each hole of a spacer having a plurality of holes. Is a multi-pipe unit in which one end of a collar is fitted, and the other end of the collar is a receptacle for connecting an adjacent spacer having the same shape as the other spacer.

In the present invention, the tube and the collar are:
Ready-made products such as polyvinyl chloride pipes, polyethylene pipes, and fiber reinforced resin mortar (FRPM) pipes are sufficient.

[0008] In the present invention, as a material of the spacer, generally used rubbers such as nitrile rubber (NR), styrene-butadiene copolymer rubber (SBR), bridiene rubber (BR), isoprene rubber (IR) and the like can be used. Resins such as polyvinyl chloride and polyethylene can be used when a rubber ring or the like is interposed between the collar and the resin. However, chloroprene rubber (CR) is required if weather resistance is required, and lightweight polyurethane foam is used if workability is considered. Is preferred. Each hole in the spacer may have a tapered surface to facilitate insertion of the end of the tube.

[0009]

The multi-tube unit of the present invention is bound in such a manner that both end portions of a plurality of tubes in a parallel state are inserted into respective holes of a spacer having a plurality of holes, respectively, and the one spacer has: One end of the collar is fitted, and the other end of the collar is a socket for connecting an adjacent spacer of the same shape as the other spacer, so that the load collapses like a single tube assembly. Because there is no pipe, storage and transportation to the construction site are easy, handling when piping multiple pipes is easy, and spacers for multiple pipe units adjacent to the collar port of one Since the pipes can be sequentially inserted in units of a plurality of pipes by inserting the pipes, the pipes can be installed more easily.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an example of a spacer used in the present invention, and FIG. 2 is a side view showing an example of a collar used in the present invention.

As shown in FIG. 1, reference numeral 11 denotes a rubber spacer 11 having a plurality of circular cross-sectional holes 111 into which respective ends of a plurality of hard vinyl chloride resin tubes arranged in parallel are inserted. , And the entire cross-sectional outer shape is circular. Note that the cross-sectional outer shape may be a shape other than a circle, for example, a square. As shown in FIG. 2, reference numeral 12 denotes a collar made of a hard vinyl chloride resin, which has a circular inner cross section, an inner diameter equal to the outer diameter of the spacer 11, and a length equal to the length of the spacer. It is doubled.

FIG. 3 is a partial sectional view showing a state of binding a plurality of tubes according to the present invention, and FIG. 4 is a side view thereof. As shown in FIGS. 3 and 4, each of the plurality of tube bundles 1 has a plurality of rigid vinyl chloride resin tubes 13 arranged in parallel.
Each is bound in a state where it is inserted into each hole of the spacers 11 and 11 'having a plurality of holes.

FIG. 5 is a partial sectional view showing an example of the multiple tube unit of the present invention, and FIG. 4 is a side view thereof. 5 and 6
As shown in the figure, a plurality of pipe units 1 ′ are configured such that both ends of a plurality of pipes 13 made of hard vinyl chloride resin arranged in parallel are
Each of the spacers 11 and 11 ′ having a plurality of holes is made of hard vinyl chloride resin and is bound in a state of being inserted into each hole. One end of a collar 12 is fitted to one of the spacers 11, and the other end of the collar 12 connects an adjacent spacer 11 '' having the same shape as the other spacer 11 'as shown in FIG. It has been. The fitting of one end of the collar 12 to the one spacer 11 may be performed at a factory or at a construction site.

The multi-tube unit 1 'is shown in FIG.
As shown in the figure, the spacers 11 '' of the adjacent plural pipe units are sequentially connected to the receiving port of the collar 12 provided at one end of the plural pipe units 1 'so as to be connected in series. It is used by connecting pipes and laying power cables and communication cables in them.

FIG. 8 is a partial sectional view showing another example of the multiple tube unit of the present invention. As shown in FIG. 8, in the multiple tube unit of this example, a collar 12 made of hard vinyl chloride resin is used.
Is covered with a rubber ring 14, and one end of a hard vinyl chloride resin collar 12 is connected to one of the spacers 11 via the rubber ring 14. This is a multiple tube unit similar to that shown in FIG. In this case, the space between the collar 12 and the spacers 11 and 11 ″ is sealed by the rubber cylindrical body 14, so that a pipe having excellent watertightness can be formed, and the cost as the spacers 11 and 11 ′ can be increased. It is preferable to use a resin material that is easy to use.

FIG. 9 is a partial sectional view showing still another example of the multiple tube unit of the present invention. As shown in FIG. 9, in the multiple pipe unit of this example, each end of a plurality of pipes 13 made of hard vinyl chloride resin arranged in parallel has a spacer made of hard vinyl chloride resin having a plurality of holes. 11,
11 'is inserted into each hole, and the tube ends are tied together with the tube ends projecting little by little. One end of a longer collar 12 'is fitted to one spacer 11, and one spacer 1
A rubber second spacer 15 having a hole through which a protruded tube end is inserted and a tube end protruding from an adjacent spacer having the same shape as the other spacer 11 'is inserted into one side surface. It is installed. The other end of the collar 12 'is a socket for connecting an adjacent spacer having the same shape as the other spacer 11'. In this case, since the pipes 13 can be joined to each other via the second spacer 15 made of rubber, it is possible to form a pipe structure having excellent water stopping properties.

FIG. 10 is a partial sectional view showing still another example of the multiple tube unit of the present invention. As shown in FIG. 10, in this example, each end of a plurality of rigid vinyl chloride resin tubes 13 arranged in parallel is formed with rubber spacers 11 and 11 ′ having a plurality of holes, respectively. And the tube ends are bound together such that the end of one tube protrudes and the tube end of the other tube is dented. One spacer 11
One end of a collar 12 made of hard vinyl chloride resin is fitted to the other, and the other end of the collar 12 is attached to the other spacer 11 ′.
It is a socket for connecting adjacent spacers of the same shape. Also in this case, the pipes 13 can be joined to each other via the spacers 11 and 11 ′ made of rubber, so that a pipe structure having excellent water stopping properties can be formed.

[0018]

As described above, the multi-pipe unit of the present invention is easy to store and transport to a construction site, and is excellent in handling when piping a plurality of pipes. Excellent pipe workability.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a spacer used in the present invention.

FIG. 2 is a side view showing an example of a collar used in the present invention.

FIG. 3 is a partial cross-sectional view showing an example of a multi-tube bundle according to the present invention.

FIG. 4 is a side view of the multi-tube bundle shown in FIG. 3;

FIG. 5 is a partial cross-sectional view showing an example of the multiple tube unit of the present invention.

FIG. 6 is a side view of the multiple tube unit shown in FIG.

FIG. 7 is a partial cross-sectional view illustrating a connection state between the multiple tube units shown in FIGS. 5 and 6.

FIG. 8 is a partial cross-sectional view showing another example of the multiple tube unit of the present invention.

FIG. 9 is a partial sectional view showing still another example of the multiple tube unit of the present invention.

FIG. 10 is a partial sectional view showing still another example of the multiple tube unit of the present invention.

FIG. 11 is a perspective view illustrating a conventional single tube collecting method.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Plural tube bundle 1 'Plural tube unit 11, 11', 11 "Spacer 12, 12 'Color 13 tube

Claims (1)

[Claims] An end portion of a collar is fitted in each of the two ends of a plurality of tubes in a state of being inserted into respective holes of a spacer having a plurality of holes. A multi-tube unit, wherein the other end of the collar is a socket for connecting an adjacent spacer having the same shape as the other spacer.