JPH04138Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) The present invention is designed to open the operation opening of underground pipes such as the cleaning opening of drain pipes and the valve stem operation opening facing the valve casing of water pipes. The present invention relates to an underground pipe operation port height adjustment device that adjusts the height of the opening above ground so that it is flush with the ground.

(Prior art) Conventionally, an operating pipe is buried underground facing the cleaning opening or valve stem of underground pipes such as the cleaning opening of a drain pipe buried underground or the valve operating opening of a water pipe, and the upper end of the operating pipe is It is opened to the ground surface and the upper end is sealed with a lid, and when necessary, the lid is opened and operating tools are inserted through the operation port to clean the pipes and operate the valves.

Conventionally, in order to adjust the height of the operation port, a height adjustment tube was screwed onto the upper end of the operation port tube, and the height was adjusted by moving the adjustment tube up and down with this threaded part, and the lid was fitted. Adjustment devices are sometimes known that adjust the top surface to be at the same height as the ground surface, but with such screw-adjustable structures, the height of the ground surface may change due to ground subsidence or road construction after installation. When adjusting the height when the height changes, if the adjustment pipe is made of cast metal, the screws will rust, or if the adjustment pipe is made of synthetic resin, dirt will get in the screws, making it impossible to adjust the height. It was difficult to adjust the height other than during construction.

(Problem that the invention aims to solve) Because the height of the conventional control pipes described above cannot be adjusted after installation, they may protrude above the ground due to ground subsidence, road construction, or other changes in ground level. There is the problem that the pipe may sink into the ground, and there is also the problem that it is not easy to replace the operation pipe with one of an appropriate height to match the height of the ground, which requires digging deep into the ground. .

In view of this problem, the present invention seeks to provide an operating port height adjusting device that can arbitrarily and easily adjust the height of the operating port on the ground surface in response to changes in ground height.

[Structure of the idea]

(Means for Solving the Problems) The present invention provides an operating port pipe that is buried facing the operating section of the underground pipe and has an operating port opened near the ground;
A height adjustment tube connected to the operation port tube, a slip prevention ring fitted internally into the operation port tube and the height adjustment tube, and a lid body fitted to the height adjustment tube. It is what it is.

(Function) The present invention can maintain the position of the operating port at the same height as the ground surface by selecting the length of the adjustment tube connected to the upper end of the operating port pipe according to the height of the ground. Further, the operation port pipe and the adjustment pipe are connected to each other by a slip prevention ring so as not to move.

(Example) An example of the present invention will be described with respect to an operation port of a drain pipe shown in FIGS. 1 and 2.

Reference numeral 1 denotes an operating port pipe, which is made of synthetic resin and is inserted into a vertical hole drilled in the ground, and its lower end is supported on a thick-walled annular concrete receiving plate 2 buried in the ground. Further, an annular anti-slip ring 3 is fitted inscribed in the upper end opening of the operation port tube 1, and an annular projection 4 on the middle of the outer circumference of this anti-slip ring 3 is engaged with the upper end of the operation port tube 1. A height adjusting tube 5 is externally fitted onto the anti-slip ring 3 projecting upward from the operating port tube 1, and the lower end of the adjusting tube 5 is supported on the annular protrusion 4 of the anti-slip ring 3 to prevent misalignment. The regulating tube 5 is supported on the operating port tube 1 by a prevention ring 3 so as not to move. Reference numeral 6 denotes a lid body, which is made up of a casting support frame 8 which is externally fitted onto the adjustment tube 5 and has a flange 7 at its lower end, and a casting lid plate 10 which is fitted into an annular step 9 on the inner circumference of this support frame 8. Become,
The height of the adjustment tube 5 is determined such that the lower surface of the annular step 9 is engaged with the upper end of the adjustment tube 5 and is flush with the upper surface of the cover plate 10 and the upper end of the support frame 8, and this surface is flush with the ground. It will be done.

Furthermore, 11 is an underground pipe consisting of a drainage pipe, T
A type joint 12 is connected, and the upper end opening of this joint 12 serves as a cleaning port, and a cleaning port pipe 13 is connected to this cleaning port.
is connected and extended upward, the cleaning port tube 13 is inserted into the operating port tube 1, its upper end is opened near the upper end of the operating port tube 1, and the cleaning port cover 14 is fitted into the opening that becomes the upper end cleaning port. It is worn. A connecting pipe 15 to a sewer main pipe is connected to the lower end of the joint 12.

Next, the operation of this embodiment will be explained.

If the ground subsides and the lid 6 sinks below the ground surface as shown in Figure 1, remove the lid 6 and adjustment pipe 5 and place them on the operation port pipe 1 as shown in Figure 2. Add a longer adjustment tube 5. The length of the adjustment tube 5 is selected in advance so that when the lid body 6 is fitted, the lid plate 10 and the ground surface are flush with each other. Further, the anti-slip ring 3 is internally fitted over the upper end of the operating port tube 1 and the lower end of the adjustment tube 5 to prevent the two from shifting in the axial direction.

Next, if the lid body 6 protrudes above the ground surface as shown in Figure 2, add it to the operating port tube 1 in the same manner as described above using the relatively short adjustment tube 5 as shown in Figure 1. This allows the top surface of the cover plate 10 to conform to the ground surface.

In either case, the work is simple because it is sufficient to dig down the ground to the buried position of the control tube 5 without digging out the entire operating port tube 1.

Next, FIG. 3 shows another embodiment, and an explanation will be given of the operation port of the valve shaft of the on-off valve of the water pipe.

An operating cap 18 is attached to a valve shaft 17 that protrudes from a valve body 16 in the middle of an underground pipe 11 consisting of a water pipe.
is installed. This cap 18 protrudes into a vertical hole 19 opened to the ground surface. A receiving plate 2 is supported at a step in the middle of the vertical hole 19, an operating port pipe 1 supported by the receiving plate 2, and an adjusting pipe 5 connected to the operating port pipe 1 via a slip prevention ring 3. The structure and function of the lid 6 fitted to the adjustment tube 5 are the same as those in the previous embodiment.

[Effect of idea]

According to the present invention, the height of the operation port of an underground pipe installed on the ground surface can always be kept flush with the ground surface so that it does not get in the way of walking, etc., and the height adjustment work can be done easily. It is something that can be done.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of an operating port height adjustment device for underground pipes showing one embodiment of the present invention;
The figures are longitudinal sectional front views showing other embodiments. 1...Operation port tube, 3...Slip prevention ring, 5...
...Height adjustment pipe, 11...Underground pipe.

Claims (1)

[Scope of utility model registration request] An operation port pipe that is buried facing the control section of the underground pipe and has a control port opened near the ground, a height adjustment pipe connected to the control port pipe, and the control port pipe and the height adjustment pipe. An anti-slip ring inserted internally into the
A device for adjusting the height of an operating port of an underground pipe, characterized by comprising a lid fitted to the height adjusting pipe.