JP6588200B2 - Buried valve installation structure - Google Patents

Description

The present invention relates to a buried valve installation structure , and more particularly, to a buried valve installation structure for connecting a buried valve such as a fire hydrant buried underground to a buried pipeline such as a water pipe.

  A conventional installation structure of a fire hydrant as an embedded valve buried underground will be described with reference to the drawings.

  FIG. 10 is a plan view showing a conventional installation structure of a fire hydrant, FIG. 11 is a cross-sectional view showing the conventional installation structure of a fire hydrant, FIG. 12 is a view taken along arrow A in FIG. 11, and FIG. It is process drawing.

  10 to 12, reference numeral 21 denotes a fire hydrant, which is configured to discharge water from a hose (not shown) connected to the water outlet 23 by rotating the valve opening / closing operation shaft 22 protruding from the top. Has been.

  Reference numeral 24 denotes a pipe joint, and a water pipe 25 as an embedded pipe is connected to both ends of the pipe joint. The fire hydrant 21 is connected to a start-up pipe 26 that is branched and connected to a pipe joint 24. The periphery of the pipe joint 24 is solidified by concrete 28 placed on the roadbed 27 to prevent the hydrant 21 from being displaced or damaged during an earthquake or the like.

  Reference numeral 29 denotes a pit constructed around the fire hydrant 21 via a bottom plate 31, 30 denotes a receiving frame installed on the pit 29, and 32 denotes an iron lid fitted into the receiving frame 30.

  The fire hydrant 21 was installed through the following steps (1) to (13) (see FIG. 13).

  (1) The fire hydrant 21 is connected to the pipe joint 24 connected to the water pipe 25 piped in the cut groove (fire hydrant connection process) via the rising pipe 26.

  (2) A temporary pit is constructed around the fire hydrant 21 (temporary pit construction process).

  (3) Temporary installation of an iron lid in a temporary pit (iron lid temporary installation process).

  (4) Backfill the cut groove (backfill step).

  (5) A restoration work is performed so that a vehicle or the like can travel on the road surface on the fire hydrant 21 (a restoration process).

  (6) At a later date, the area around the fire hydrant 21 is excavated again (re-excavation process).

  (7) A earth clasp is installed around the fire hydrant 21 (a soil retaining installation process).

  (8) Install a formwork (formwork installation process).

  (9) The concrete 28 is placed in the mold (concrete placing step).

  (10) The bottom plate 31 is installed on the concrete 28 (bottom plate installation step).

  (11) Build pits 29 on the bottom plate 31 (pit building step).

  (12) The receiving frame 30 into which the iron lid 32 is fitted is installed on the pit 29 (receiving frame installation process).

  (13) The periphery of the receiving frame 30 is backfilled and paved (paving process).

  The fire hydrant 1 was constructed through the steps (1) to (13) described above, but had the following problems.

  After connecting the fire hydrant 21 to the water line 25 via the rising pipe 26 as in step (1), a temporary pit is constructed around the fire hydrant 21 as in step (2). As in (3), an iron lid was temporarily installed in the temporary pit, and then the cut groove was backfilled as in step (4), and then the restoration work was performed as in step (5). Later, as in step (6), it was necessary to excavate again at a later date. Therefore, it took much time and labor to construct the fire hydrant 21.

  If the steps (2) to (6) can be omitted, the construction time of the fire hydrant 21 can be greatly shortened, but this is because the road must be closed for a long time. I can't do it.

  In addition, a great deal of time and labor is required for the process performed after the re-excavation process of the process (6), the earth retaining installation process of the process (7), the form installation process of the process (8), and the concrete placing process of the process (9). Needed.

Accordingly, an object of the present invention is that when a buried valve such as a fire hydrant buried underground is connected to a buried pipe such as a water pipe, a concrete placing process or the like in the formwork is not required. An object of the present invention is to provide an embedded valve installation structure that allows easy installation of an embedded valve in a short time.

  The present invention has been made to achieve the above object, and is characterized by the following.

According to the first aspect of the present invention, in the buried valve installation structure in which the buried valve buried underground is connected to the buried pipeline, the groove portion faces the entire length in the height direction on the roadbed constructed under the construction road surface. A base having a pit placement portion formed in this manner is placed, a joint pipe is arranged through the groove in the pit placement portion, the joint pipe and the buried pipeline are connected, and the pit placement portion is The concrete is characterized in that concrete is placed on the base, the base and the joint pipe are integrated , and the load applied to the pit is transmitted to the roadbed via the base .

  The invention according to claim 2 is the invention according to claim 1, wherein the buried valve is formed of a fire hydrant, and the fire hydrant is connected to a rising pipe branched and connected to the joint pipe. It has the characteristics.

  According to a third aspect of the present invention, in the first aspect of the present invention, the embedded valve is an air valve, and the air valve is connected to a rising pipe that is branched and connected to the joint pipe. It has a feature in being.

The invention according to claim 4 is a buried valve installation structure in which a buried valve buried underground is connected to a buried pipeline, and a groove portion is opposed across the entire length in the height direction on a roadbed constructed under a construction road surface. Placing a base having a pit placement portion formed in this manner, arranging a gate valve as the buried valve through the groove in the pit placement portion, connecting the gate valve and the buried pipeline, Concrete is placed in the pit placement portion, the base and the gate valve are integrated , and the load applied to the pit is transmitted to the roadbed via the base .

  The invention according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, the base is made of metal.

  According to this invention, temporary pit construction process, iron lid temporary installation process, backfilling process, restoration process, re-excavation process, earth retaining installation process, formwork installation process, concrete placing process, and bottom plate installation process are unnecessary. In addition, it is easy to install a buried valve such as a fire hydrant in a short time.

It is a top view which shows the base for embedded valves used for this invention. It is a front view which shows the base for embedded valves used for this invention. It is a side view which shows the base for embedded valves used for this invention. It is a top view which shows the state which connected the fire hydrant to the water pipe line by the buried valve installation structure of this invention. It is a front view which shows the state which connected the fire hydrant to the water pipe line by the buried valve installation structure of this invention. It is a fragmentary sectional view which shows the fire hydrant which construction was completed. It is a top view which shows the state which connected the gate valve to the water pipe line by the buried valve installation structure of this invention. It is a front view which shows the state which connected the gate valve to the water pipe line by the buried valve installation structure of this invention. It is a fragmentary sectional view which shows the gate valve which construction was completed. It is a top view which shows the conventional installation structure of a fire hydrant. It is a fragmentary sectional view which shows the conventional installation structure of a fire hydrant. It is A arrow directional view of FIG. It is a standard construction process diagram of a fire hydrant.

  Next, an embodiment of the embedded valve base of the present invention will be described with reference to the drawings.

Figure 1 is a plan view showing an embedded valve base to be used in the present invention, FIG. 2 is a front view showing an embedded valve base to be used in the present invention, FIG. 3, for embedding valve for use in the present invention It is a side view which shows a base.

As shown in FIGS. 1 to 3, the embedded valve base 1 used in the present invention is placed on a roadbed 27 (see FIG. 11), and a pit 29 (see FIG. 11) is placed on the base 1. A cylindrical pit placing portion 2 is formed.

The base 1 is made of a metal such as cast iron, for example. The pit placement portion 2 is reinforced by ribs 3, and the groove portion 4 is formed in the pit placement portion 2 so as to face the entire length in the height direction .

Hereinafter, a fire hydrant is taken as an example of the buried valve, and the case where the fire hydrant is constructed by the buried valve base used in the present invention will be described with reference to the drawings.

Figure 4 is a front showing a state plan view showing a state of connecting to a water pipe hydrants by burying valve installation structure, FIG. 5, the hydrant by burying valve installation structure of the present invention was connected to a water conduit of the present invention FIG. 6 and FIG. 6 are partial cross-sectional views showing the fire hydrant that has been completed.

  4 to 6, reference numeral 5 denotes a fire hydrant provided with a valve opening / closing operation shaft 6, a water discharge port 7, and the like. Reference numeral 8 denotes a joint pipe disposed through the groove 4 of the pit placement part 2. A water pipe 9 is connected to the joint pipe 8. Reference numeral 10 denotes a rising pipe branched and connected to the joint pipe 8 in the pit placement portion 2. The base 1 and the joint pipe 8 are integrated by a concrete 11 placed in the pit placement portion 2. By integrating the base 1 and the joint pipe 8 with the concrete 11, it is possible to prevent displacement and damage of the fire hydrant 5 during an earthquake or the like.

  An example of the construction method of the fire hydrant 5 is demonstrated below.

  First, the base 1 is suspended by a crane or the like on a roadbed 27 (see FIG. 11) constructed under the road surface of the construction site.

  Next, the joint pipe 8 is installed on the pit placement portion 2 of the base 1.

  Next, water pipes 9 are connected to both ends of the joint pipe 8.

  Next, the fire hydrant 5 is connected to the rising pipe 10 of the joint pipe 8.

  Next, concrete 11 is placed in the pit placement portion 2 to integrate the base 1 and the joint pipe 8 together.

  Next, as shown in FIG. 6, a pit 29 is constructed on the pit placement unit 2. The construction of the pit 29 can be easily performed because it is only necessary to place the pit 29 on the pit placement portion 2.

  Next, as shown in the figure, a receiving frame 30 into which the iron lid 32 is fitted is installed on the pit 29.

  And if the circumference | surroundings of the receiving frame 30 are backfilled and paved, installation of the fire hydrant 5 will be completed.

The above is the case where the fire hydrant is connected to the water pipe by the buried valve installation structure of the present invention, but the case where the air valve as the buried valve is connected to the water pipe is basically the same as the fire hydrant.

Next, a case where a gate valve as an embedded valve is connected to a water pipe by the embedded valve installation structure of the present invention will be described with reference to the drawings.

Figure 7 is a plan view showing a state in which the gate valve connected to a water pipe by burying valve installation structure of the present invention, FIG. 8, a state where the gate valve connected to a water pipe by burying valve installation structure of the present invention FIG. 9 is a partial cross-sectional view showing the gate valve that has been completed.

  7 to 9, reference numeral 12 denotes a gate valve that opens and closes the water pipe 9. The gate valve 12 is arranged in the pit mounting portion 2, and both end portions of the gate valve 12 protruding from the pit mounting portion 2 are connected to the water pipe 9. A valve opening / closing operation shaft 13 of the gate valve 12 is provided on the pit placing portion 2.

  The base 1 and the gate valve 12 are integrated by concrete 14 placed in the pit placement portion 2. Thereby, position shift and damage of gate valve 12 at the time of an earthquake etc. can be prevented.

  An example of the construction method of the gate valve 12 will be described below.

  First, the base 1 is suspended by a crane or the like on a roadbed 27 (see FIG. 11) constructed under the road surface of the construction site.

  Next, the gate valve 12 is installed on the pit mounting portion 2 of the base 1.

  Next, the water pipe 9 is connected to both ends of the gate valve 12.

  Next, concrete 14 is placed in the pit placement portion 2 to integrate the base 1 and the gate valve 12 together.

  Next, as shown in FIG. 9, a pit 29 is constructed on the pit placement unit 2. The construction of the pit 29 can be easily performed because it is only necessary to place the pit 29 on the pit placement portion 2.

  Next, as shown in the figure, a receiving frame 30 into which the iron lid 32 is fitted is installed on the pit 29.

  And if the circumference | surroundings of the receiving frame 30 are backfilled and paved, installation of the gate valve 12 will be completed.

  As described above, according to the present invention, since the base 1 may be hung on the roadbed 27 at the installation site of the buried valves such as the fire hydrant 5 and the gate valve 12, the conventional installation structure described above is used. The temporary pit construction process, iron lid temporary installation process, backfilling process, restoration process, re-excavation process, earth retaining installation process, formwork installation process, concrete placing process, and bottom plate installation process are not required. As a result, it is possible to install the buried valve such as the fire hydrant 5 easily and in a short time.

1: base 2: pit placement part 3: rib 4: groove part 5: fire hydrant 6: valve opening / closing operation shaft 7: water outlet 8: joint pipe 9: water pipe 10: rise pipe 11: concrete 12: gate valve 13: Valve opening / closing operation shaft 14: Concrete 21: Fire hydrant 22: Valve opening / closing operation shaft 23: Water outlet 24: Pipe joint 25: Water pipe 26: Startup pipe 27: Roadbed 28: Concrete 29: Pit 30: Receiving frame 31: Bottom plate 32: Iron lid

Claims (5)

In the buried valve installation structure that connects the buried valve buried underground to the buried pipeline,
A base having a pit mounting portion in which the groove portion is formed to face the entire length in the height direction is placed on the roadbed constructed under the construction road surface, and the joint pipe is inserted through the groove portion in the pit mounting portion. And connecting the joint pipe and the buried pipe line, placing concrete in the pit placement portion, integrating the base and the joint pipe, and applying a load applied to the pit to the base An embedded valve installation structure characterized by transmitting to the roadbed via   The buried valve installation structure according to claim 1, wherein the buried valve is formed of a fire hydrant, and the fire hydrant is connected to a rising pipe branched and connected to the joint pipe.   The buried valve installation structure according to claim 1, wherein the buried valve is an air valve, and the air valve is connected to a rising pipe that is branched and connected to the joint pipe. In the buried valve installation structure that connects the buried valve buried underground to the buried pipeline,
A base having a pit placement portion formed with a groove portion facing the entire length in the height direction is placed on a roadbed constructed under a construction road surface, and the buried valve is passed through the groove portion in the pit placement portion. The gate valve is arranged, the gate valve and the buried pipeline are connected, concrete is placed in the pit placement portion, the base and the gate valve are integrated, and the pit is applied. An embedded valve installation structure , wherein a load is transmitted to a roadbed via the base .   The embedded valve installation structure according to any one of claims 1 to 4, wherein the base is made of metal.

Images