JPH05255957A - Meter fitting/removing device - Google Patents

Abstract

PURPOSE:To easily remove a meter from a meter box together with a meter fitting/removing member by operating a handle shaft to cut off the water of a primary pipe and release the connection of the meter, and removing a fitting/ removing bar from the handle shaft while the removed meter is fixed to a holding section. CONSTITUTION:The fitting/removing member 5 of a meter 12 is stored in a meter box 8 while a fitting/removing bar 1 is coupled with the handle shaft 7 of a meter fitting joint 6. When the meter 12 is to be replaced, the handle shaft 7 protruded from the cylindrical fitting/removing bar 1 is rotated by 90 deg. to stop the water of a primary pipe 16, the handle shaft 7 is further rotated by 90 deg. to retreat a spindle member, and the connection of the meter 12 is released. Next, the fitting/removing bar 1 is lifted and extracted to the outside together with the meter fitting/removing member 5, and after the meter 12 is replaced with a new one, the fitting/removing bar 1 is coupled with the handle shaft 7 and lowered downward and the required fitting work is performed in the procedures opposite to those for the removing work. The meter fitting/ removing member 5 is left in the meter box 8 as it is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a meter attachment / detachment device which enables a water meter mounted in a meter box buried in the ground to be easily put in and taken out at the time of replacement.

[0002]

2. Description of the Related Art Generally, a water meter is installed near the inner bottom of a meter box buried in the ground. To replace it, connect both ends of the meter from the primary and secondary piping. The meter must be removed and taken out, a new meter must be placed in the meter box, and both end connections must be connected to the primary and secondary piping. Since the household meter box is small and the internal space is small, it is very troublesome to replace the meter in the meter box.

In order to facilitate the replacement work of the meter in the meter box, a technique has been developed which allows the meter to be easily attached and detached through a meter mounting joint,
The applicant has previously filed (Japanese Patent Application No. 3-335569).
issue). In this case, the connection of the meter is not by tightening the screw, but by the pressure contact means using the spring, that is, by providing the piston member biased by the spring in the meter mounting joint attached to the primary side pipe, The pressing force of the piston member allows the meter to be pressed against the secondary side pipe so as to be clamped and connected. Therefore, when the pressing force of the piston member is released when the meter is replaced, the meter is immediately disconnected and the replacement work is facilitated.

The pressing force of the piston member is released by rotating the handle shaft standing on the meter mounting joint and moving the piston member backwards against the spring by the eccentric cam provided on the handle shaft. I am doing it. Further, the lower end of the handle shaft is engaged with a ball valve provided in the joint for mounting the meter, and by rotating the ball valve, water can be stopped on the primary pipe side. That is, handle shaft 9
When it is rotated 0 °, the ball valve rotates to stop the water on the primary side pipe, and when it is further rotated 90 °, the eccentric cam causes the piston member to retreat to the primary side pipe to disconnect the meter. It is convenient because the meter can be replaced while the piping is stopped.

[0005]

However, in cold regions, the meter box is formed deeper than usual (1.5 m or more) to prevent freezing, and the meter is attached near the inner bottom of the meter box. Even if the meter is removed with the mounting joint, it is difficult to take out the removed meter because the inner bottom of the meter box cannot be reached, and it is not easy to connect a new meter.

The present invention has been made to solve the above-mentioned conventional problems, and a meter mounted via the meter mounting joint in the vicinity of the inner bottom portion of a deep meter box can be easily taken in and out, and a new meter can be installed. SUMMARY OF THE INVENTION It is an object of the invention to provide a meter attaching / detaching device capable of easily performing the connecting work.

[0007]

As a means for technically solving this problem, the present invention provides a water meter with a meter mounting joint on the primary pipe side near the inner bottom of a meter box that is deeper than usual. This meter mounting joint has a ball valve and a piston member inside, and when the handle shaft erected for operation is rotated by 90 °, the ball valve shuts off the primary side pipe, In a meter attaching / detaching device in which the piston member is retracted by rotating 90 ° to disconnect the connection of the meter, a cylindrical shape which can be inserted into and removed from the handle shaft and has a long length according to the depth of the meter box. Detachable rod, a bifurcated detachable guide attached to the lower end of the detachable rod so as to straddle the meter mounting joint, and a spring interposed between the detachable guide. A meter attaching / detaching member consisting of a meter holding unit attached to the meter holding unit is attached, and the meter fixed to the meter holding unit at the time of meter replacement can be put in and taken out of the meter box together with the meter attaching / detaching member by the holding rod. And

[0008]

[Operation] To replace the meter in the meter box, first rotate the handle shaft protruding from the top of the cylindrical attachment / detachment rod by 90 ° and turn the ball valve to stop the primary side piping, then Disconnect the meter by rotating the handle shaft an additional 90 ° and retracting the piston member. The removed meter is fixed to the meter holding portion as it is, and if the upper end of the long removable rod is gripped and lifted, the removable rod will come off the handle shaft, and the meter can be taken out together with the meter removable member. After attaching a new meter to the meter holding part and fitting the removable rod to the handle shaft and lowering it down, the new meter is located between the primary side pipe and the secondary side pipe, and the handle shaft protruding from the top of the removable rod Is rotated in the opposite direction to 90 °, the piston member moves forward and presses a new meter to clamp it between the primary side pipe and the secondary side pipe, thereby connecting both ends of the new meter. If the handle shaft is further rotated 90 ° in the opposite direction after this, the ball valve will rotate and the water stoppage of the primary side pipe will be released, and the secondary side pipe will pass through the new meter from the primary side pipe. And the meter replacement work is completed. The meter attaching / detaching member is left as it is in the meter box.

[0009]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 to 3 show a meter attaching / detaching member according to the present invention. A cylindrical attaching / detaching bar 1, a bifurcated attaching / detaching guide 2 fixed to the lower end portion thereof, and a spring 3 on the attaching / detaching guide 2 are provided. It is composed of the attached meter holder 4.

As shown in FIG. 4 and the like, the detachable rod 1 is formed so as to be detachable from the handle shaft 7 of the meter mounting joint 6 so that the upper end portion can be immediately grasped by hand depending on the depth of the meter box 8. Is formed to the required length (height).

The attachment / detachment guide 2 has a cylindrical portion 2a and a leg portion 2b protruding from the outer surface thereof in a bifurcated manner.
The lower end of the detachable rod 1 is fixed to the upper part of a by adhesion, the key spindle guide 9 is fitted and fixed in the cylindrical part 2a, and the side wall thereof has a slit 9a for guiding as shown in FIG. The guide groove is provided in the direction parallel to the axis.

The meter holding portion 4 has a pair of shafts 4a and a ring member 4b fixed so as to be passed over the tip of the shafts 4a.
Are respectively inserted into the boss portions 2c formed at the lower ends of the leg portions 2b of the attachment / detachment guide 2, and the springs 3 are respectively provided between the spring receivers 10 attached to the rear end portions and the boss portions 2c so as to form the shaft 4a. It is biased backwards. Reference numeral 11 denotes a stopper ring fitted on the shaft 4a, which is in contact with the boss portion 2c.

The ring member 4b of the meter holding portion 4 includes
The primary side connection port 12a of the water meter 12 is fitted and fixed with the set screw 13. The primary side connection port 12a
And a cap nut 14 having an axial hole in the secondary side connection port 12b.
Are respectively fitted, and seal packings 15 are further fitted to the open ends thereof.

The meter attaching / detaching member 5 constructed as described above
As shown in FIG. 4, when the detachable rod 1 is fitted on the handle shaft 7 of the meter mounting joint 6, the meter box 8
At this time, the pair of shafts 4a of the meter holding portion 4 are located on both sides of the meter mounting joint 6 via the bifurcating attachment / detachment guide 2 as shown in FIG. The meter 12 fixed to the member 4b is
It is connected by being pressed by the meter mounting joint 6 connected to the primary side pipe 16 and being pressed into contact with the secondary side pipe 17.

When the meter is replaced, the lid (not shown) of the meter box 8 is opened, the handle shaft 7 projecting from the tip of the detachable rod 1 is operated to stop the water flow in the primary side pipe 16, and the meter mounting joint is also provided. 10 and FIG. 1 by releasing the pressing force of 6 to disconnect the meter 12 and lifting the detachable rod 1 to remove it from the handle shaft 7 as shown in FIG.
The meter 12 can be taken out from the meter box 8 together with the meter attaching / detaching member 5 as in 1.

The procedure for replacing the meter is as follows.
Fit the shaft turning tool (not shown) on the upper end of the
When rotated by 0 °, as shown in FIG. 9, the ball valve 18 provided in the meter mounting joint 6 is rotated by 90 ° by its handle shaft to stop the primary side pipe 16.

Next, when the handle shaft 7 is further rotated by 90 °, the eccentric cam 19 provided at the lower portion of the handle shaft causes the piston member 20 to retreat against the spring 21. Meter 1 released
2 is disconnected. At this time, the ball valve 18 is also 9
Although rotated by 0 °, the still water state of the primary side pipe 16 is still held, and the ball valve 18 is engaged with the handle shaft 7 so that the ball valve 18 can be retracted together with the piston member 20 holding it. An escape groove 18a is formed.

When the meter 12 is disconnected in this way, the meter 12 is still fixed to the ring member 4b of the meter holding member 4, and the key protruding from the side of the handle shaft 7 is provided. 7a is 180 °
Since it rotates to match the position of the slit 9a or the guide groove of the key spindle guide 9, it can be removed from the handle shaft 7 by grasping and lifting the upper end of the detachable rod 1.

At this time, since the upper end of the detachable rod 1 is located near the opening of the meter box 8, it can be easily grasped, and the meter 12 is attached to the lower end of the detachable rod via the meter holding member 4. Is fixed, the meter 12 can be taken out from the meter box 8 by removing the detachable rod 1 from the handle shaft 7. That is, as shown in FIG. 11, the meter attaching / detaching member 5 and the meter 12
Can be taken to the ground.

The meter 12 taken out is removed from the meter holding portion 4 and replaced with a new meter, and this time the detachable rod 1 is fitted from above the handle shaft 7 and gently dropped.
In the new meter, the cap nuts 14 on both ends are received by a pair of support rods 22 which are fixed by being inserted between the primary side pipe 16 and the secondary side pipe 17, and the primary side connection port of the new meter is for meter mounting. The secondary side connection port of the joint 6 faces the secondary side pipe 17 with its central axis aligned.
Since the bifurcated leg portion 2b of the meter attaching / detaching member 5 straddles the meter mounting joint 6, the meter holding portion 4
The pair of shafts 4a do not collide with the meter mounting joint 6 and are positioned on both sides so as to avoid it.

From this state, first, when the handle shaft 7 is rotated 90 ° in the opposite direction to the above, the ball valve 18 is rotated 90 °, but at that position, the water stop state is still maintained, and the eccentric cam 19 is moved to the piston. When the piston member 20 is released from the member 20 and released from the retracted position, the piston member 20 is moved forward by the restoring force of the spring 21, and the new meter can be pressed against the secondary side pipe 17 to be connected.

At the time of this connection, the pair of shafts 4a of the new meter compresses the spring 3 and moves slightly forward, and the repulsive force of the new meter causes the primary-side connection port of the new meter to move to the meter mounting joint 6
Since it is pressure-bonded to, the connection with the primary side pipe 16 can be surely made through the meter mounting joint 6.

Next, when the handle shaft 7 is further rotated in the opposite direction by 90 °, the ball valve 18 is rotated by 90 ° and the water-stop state is released. As a result, the meter mounting joint 6 of the primary side pipe 16 is renewed. Communication with the meter and the secondary side pipe 17 is completed, and the installation work of the new meter is completed.

The meter attaching / detaching member 5 remains in the meter box 8 as it is, and the handle shaft 7 has a total of 180
By the rotation of °, the key 7a on the side thereof is located on the opposite side of the slit 9a or the guide groove of the key spindle guide 9 as shown in FIG. 7, and its lower end abuts on the upper surface of the key spindle guide 9. Therefore, the stopper action for preventing the detachable rod 1 from coming off can be performed.

In this way, the water meter 12 can be put into and taken out of the deep meter box 8 together with the meter attaching / detaching member 5, so that the meter can be replaced very easily.

[0026]

As described above, according to the present invention,
The handle shaft of the meter mounting joint attached to the primary side pipe is detachably provided with the detachable rod of the meter attaching / detaching member,
By operating the handle shaft to disconnect the water from the primary side pipe and disconnect the meter, by removing the detachable rod from the handle shaft while the removed meter is fixed to the meter holding part,
The entire meter attachment / detachment member can be taken out from the meter box. Therefore, even if it is a deep meter box in a cold region, the meter can be easily taken out and a new meter can be easily installed from the top, facilitating the replacement work of the meter and significantly improving the work efficiency. It has an excellent effect.

[Brief description of drawings]

FIG. 1 shows a meter attaching / detaching member according to the present invention, and is a front view of a main part with a meter fixed.

FIG. 2 is a plan view of the main part of the same.

FIG. 3 is a side view of the main part of the same.

FIG. 4 is a front view of an essential part showing a state where a meter attaching / detaching member is attached to a meter attaching joint.

FIG. 5 is a side view of the main part of the same.

FIG. 6 is a front view of an essential part showing a state where the meter attaching / detaching member is removed from the meter mounting joint.

7 is a cross-sectional view taken along the line AA of FIG.

8 is a sectional view taken along line BB of FIG.

FIG. 9 is a sectional view of a joint portion for mounting a meter.

FIG. 10 is a perspective view showing a state where the meter attaching / detaching member is taken out from the meter box.

FIG. 11 is an explanatory diagram showing a state when a meter is replaced.

[Explanation of symbols]

1 ... Attachment / Detachment Rod 2 ... Attachment / Detachment Guide 2a ... Cylindrical Part 2
b ... leg part 2c ... boss part 3 ... spring 4 ... meter holding part 4a ... shaft 4b ... ring member
5 ... Meter attaching / detaching member 6 ... Meter mounting joint
7 ... Handle shaft 7a ... Key 8 ... Meter box 9 ... Key spindle guide 9a ... Slit 10 ... Spring bearing
11 ... Stopper ring 12 ... Meter 12
a ... Primary side connection port 12b ... Secondary side connection port 13 ...
Set screw 14 ... Cap nut 15 ... Seal packing 16 ... Primary side piping 17 ... Secondary side piping 18 ... Ball valve 18a ... Relief groove 19 ... Eccentric cam 20 ... Piston member 21 ... Spring 22 ... Support rod

Claims (1)

[Claims] 1. A water meter is mounted on the primary pipe side near the inner bottom of a meter box deeper than usual via a meter mounting joint, and the meter mounting joint has a ball valve and a piston member inside. When the handle shaft that is erected for operation is rotated by 90 °, the ball valve shuts off the water on the primary side pipe, and when it is further rotated by 90 °, the piston member is retracted to disconnect the meter. In the meter attachment / detachment device, a cylindrical attachment / detachment rod which is detachable from the handle shaft and formed to be long according to the depth of the meter box, and the lower end portion of the attachment / detachment rod straddling the meter attachment joint. A meter attachment / detachment member comprising a bifurcated attachment / detachment guide attached to the attachment / detachment and a meter holder attached to the attachment / detachment guide via a spring, Said fixed meter the meter holding portion, meter attachment apparatus is characterized in that to allow out the meter detachable member per meter box with the detachable rod during replacement.