JPH0416592Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] In a method of laying electric wire cables and communication cables in a conduit, the diameter of the cable may be very small compared to the inner diameter of the conduit.

In such a case, in order to use the conduit effectively, a method may be adopted in which a plurality of divided conduits are inserted into the conduit and a cable is laid for each divided conduit.

However, if the split pipe is not fixed at that time, when the cable is installed or removed, it will move to the split pipe due to friction with the cable.

Therefore, it is necessary to fix the split pipe line to the existing pipe line.

The present invention relates to a fixed end of a split conduit in such a case.

[Prior art] An example is shown in Figs. 5 and 6.
(See Publication No. 33705).

10 is a conduit, and 12 is a divided conduit.

In this case, a disk-shaped fixing plate 14 having a larger diameter than the pipe line 10 is used. The ends of the divided pipe lines 12 are inserted into the plurality of circular holes 16 provided in the fixing plate 14, and the wedges 18 are press-fitted into the divided pipe lines 12 to fix the divided pipe lines 12 to the fixing plate 14.

[Problems to be solved by the invention] However, in the above case, (1) In order to drive the wedge 18, it is necessary to cut the split pipe 12 at the very end of the exit of the pipe 10; Difficult to work with.

In particular, when the number of divided pipe lines 12 increases, it becomes very difficult to cut them.

(2) When driving the wedge 18, the divided pipe line 12 may come off from the fixing plate 14.

(3) The fixing plate 14 must be installed outside the conduit 10.

[Means for Solving the Problems] This invention, as shown in Figs. Fixing plate 2 configured to be attached so that it can be extended to
(2) Putting the fixing plate 20 into the pipe 10 and fixing it by strongly pressing the small piece 30 against the inner wall of the pipe 10; (3) Using the circular hole 26. The split pipe line 12 passed through the gripper 3
The above-mentioned problem has been solved by adopting a configuration in which the gripping tool 36 is gripped by the fixing plate 20 and the gripping tool 36 is fixed to the fixing plate 20.

[Example] About the fixed plate 20 FIG. 1 is a front view thereof.

22 is the main body, which has an appropriate thickness (see Figure 4)
It is plate-shaped. This is, for example, in the form of three arcuate notches 24 provided at equal intervals on the peripheral edge of a disk, the radius r of which is slightly smaller than the radius of the conduit 10.

The main body 22 has a circular hole 2 for passing the divided pipe line 12 through it.
6, for example seven. For example, four screw holes 28 for fixing the gripping tool 36 are provided.

At each of the above-mentioned notches 24, a small piece 30 in the shape of an arcuate plate, for example, is attached to the main body 22 with a screw 32. By turning the nut 34 fixed to the screw 32, the small piece 30 can be strongly extended outward.

Regarding the gripping tool 36, as shown in FIG. 2, it is divided into two parts, for example, a lower side 38 and an upper side 40. Note that upper and lower refer to drawings and have no particular meaning.

For example, two arcuate surfaces 42 and 4 circumscribing the divided pipe line 12 are provided on opposing surfaces of the lower side 38 and the upper side 40.
4 will be provided. A notch 45 is formed in each arcuate surface 42 to increase the gripping force on the divided pipe line 12. If cuts 45 are made in both the vertical and horizontal directions, the gripping force will be further increased.

Flanges 46 and bolt holes 48 are provided on both sides of the upper side 40 so that it can be connected to the lower side 38 by bolts 50.

A long hole 52 is provided in the lower side 38 (this role will be explained later).

In addition, by combining only the lower side 38, the divided pipe line 1
The lower surface of the lower side 38 is also provided with, for example, three arcuate surfaces 54 so that the user can grip the device.

Further, flanges 56 and bolt holes 58 are provided on both sides of the lower side 38 so that the connection can be made with bolts 60.

[Operation] (Figures 3 and 4) (1) After passing the divided pipe line 12 into the pipe line 10, the divided pipe line 12 is passed through the circular hole 26 of the fixed plate 20.

In addition, at this time, unlike the conventional case, it is not necessary to align the end of the divided pipe line 12 with the surface of the fixing plate 20. As shown in Figure 4, manhole 11
There is no problem even if it protrudes a little to the side.

(2) Insert the fixing plate 20 into the conduit 10.

Turn the screw 32 to move the small pieces 30 on three sides outward and press them against the inner wall of the conduit 10. If the screws 32 are tightened sufficiently, the friction between the small piece 30 and the pipe line 10 will cause the fixing plate 20 to tighten against the pipe line 1.
It is firmly fixed within 0.

(3) The lower side 38 and upper side 40 of the gripping tool 36 sandwich the divided pipe line 12 (the arcuate surfaces 42 and 44 are connected to the divided pipe line 1
2) Tighten bolt 50. Thereby, the divided pipe line 12 is fixed to the gripper 36.

In addition, the divided pipe line 12 is sandwiched between the two lower sides 38 (the arcuate surface 54 is placed on the divided pipe line 12),
Tighten the bolt 60 and connect the split pipe line 12 to the lower side 38.
Fix the interval.

(4) The bolt 62 is screwed into the screw hole 28 through the elongated hole 52 to fix the space between the gripper 36 and the fixing plate 20.

As described above, the divided pipe line 12 is fixed to the pipe line 10.

(5) In order to prevent water from entering the manhole 11 from the existing pipeline 10, do the following.

That is, first, as shown in FIG.
Enter 4.

After attaching the fixing plate 20, etc., a caulking agent 66 is poured through the gap to fill the entire gap between the spacer 64 (the caulking agent 66 does not go deep beyond the spacer 64).

[Effects of the invention] (1) The fixing plate 20 is attached to the existing pipe 1 using the small piece 30.
Since it can be attached within 0, the divided pipe line 12 can be gripped regardless of the condition of the inner wall of the manhole 11.

(2) Since the split pipe line 12 can be gripped by the gripping tools 36, the split pipe line 12 can be fixed without inserting the wedge 18.

(3) Unlike the conventional case, there is no need to cut the divided pipe line 12 along the surface of the fixing plate 20, making the work easier.

[Brief explanation of the drawing]

Figures 1 to 4 show examples of the present invention.
FIG. 1 is a front view of the conduit 10, and FIG. 2 is a gripping tool 36.
3 is a front view of the split pipe line 12 in a fixed state, FIG. 4 is a side view thereof, FIG. 5 is an explanatory diagram of the prior art, and FIG. 6 is an explanation of parts used therein. figure. 10...pipeline, 11...manhole, 12...
Split pipe line, 14...fixing plate, 16...circular hole, 18
... Wedge, 20 ... Fixed plate, 22 ... Main body, 2
4... Notch, 26... Circular hole, 28... Screw hole, 30... Small piece, 32... Screw, 34... Nut, 36... Gripping tool, 38... Lower side, 40... Upper side , 42, 44...Circular surface, 46...Flange,
48... Bolt hole, 50... Bolt, 52... Long hole, 54... Arc surface, 56... Flange, 58...
...Bolt hole, 60...Bolt, 62...Bolt,
64...Spacer, 66...Caulking agent.

Claims (1)

[Claims for Utility Model Registration] A fixed plate 20 is constructed by attaching a plurality of small pieces 30 to the side surface of a plate-shaped main body 22 having a plurality of circular holes 26 so as to be able to strongly protrude outward.
Inside the pipe 10, the small piece 30 is fixed by strongly pressing against the inner wall of the pipe 10, and the divided pipe 12 passed through the circular hole 26 is gripped by the gripping tool 36, and the gripping tool 36 is fixed to the fixing plate 20.