JP2002181607A - Two-pipe fixing device in attachment-detachment of piping apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extremely easily replace a gas meter by fixing two pipes connected to the gas meter. SOLUTION: A two-pipe fixing jig 20 fixable to primary side piping and secondary side piping is arranged in a state of connecting an existing gas meter to the primary side piping and the secondary side piping. The two-pipe fixing jig 20 has a fixed gripping body 21 and a movable gripping body 31 slidable to the fixed gripping body 21, and is constituted so as to be installable according to a pitch between the pipe axes of the two pipes. Gripping levers 24 and 34 are rotatably installed on the respective gripping bodies 21 and 31, and pipe gripping parts 28 and 38 are respectively formed. The respective gripping levers 24 and 25 are constituted so as to be capable of coping with a pipe diameter of the two pipes by movably forming respective rotary fulcrums 241 and 341.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe fitting having two pipes connected in parallel so as to fix a pitch between the two pipes when the pipe is attached to or detached from the two pipes. The present invention relates to a two-pipe fixing device for attaching and detaching plumbing instruments to be used.

[0002]

2. Description of the Related Art Generally, a plumbing device arranged in a plumbing path has a pipe connected between a suction side and a discharge side. A piping port is formed at each part of the piping device connected to each pipe.For example, in a piping device such as a gas meter, the piping port on the suction side and the piping port on the discharge side are arranged side by side on the upper surface of the gas meter. Is formed. Normally, gas meters are plumbed outdoors and must be replaced with a new gas meter when the expiration date is approaching.When replacing a gas meter, to remove the existing gas meter,
Each port must be removed from the pipe connected to each port.

Conventionally, a gas meter is connected to a pipe by connecting a suction pipe (primary pipe) and a discharge pipe (secondary pipe) to a pipe port of the gas meter via a pipe joint. The secondary side pipe was appropriately piped from above each pipe port of the gas meter using various pipe members (bent pipe, straight pipe, etc.).

When replacing the gas meter, the existing gas meter is detached from the pipe joint by loosening the union nut of the pipe joint from the pipe port, and the pipe axis of the pipe joint coincides with the pipe axis of the pipe port of the new gas meter. The gas meter was replaced by attaching it.

[0005]

However, a primary pipe connected to a primary pipe port of an existing gas meter,
By removing the existing gas meter from the secondary pipe connected to the secondary pipe port, the pitch between the pipe axes was shifted. That is, when the gas meter is originally installed, the piping system piped while connecting the various pipe sections is finally fixed in position by tightening the union nut of the pipe joint at the pipe opening of the gas meter. However, since stress is applied to the entire pipe due to aging or the like, removing the existing gas meter has caused a shift in the pitch between the pipe axes of the primary piping system and the secondary piping system. Therefore, once the existing gas meter is removed, once the pitch between the tube axes is shifted, the work of installing a new gas meter becomes extremely difficult, which takes time and labor. Furthermore, forcibly adjusting a large pitch shift may cause breakage of the pipe.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem. By fixing and supporting two pipes before attaching and detaching the plumbing equipment, it is possible to remove and attach a gas meter or similar plumbing equipment to or from a connected pipe. It is an object of the present invention to provide a two-tube fixing device which can be performed extremely easily and without damaging the tube.

[0007]

Means for Solving the Problems In order to solve the above-mentioned problems, a two-pipe fixing device according to the present invention for attaching and detaching a plumbing device is configured as follows. That is, a pipe is connected to each of two pipe ports formed in the pipe fitting, and is a two-pipe fixing device for attaching and detaching a pipe fitting configured to be able to grip the respective pipes,
The two-tube fixing device is configured to include a tube gripper that grips each of the pipes and a main body that supports the pipe gripper, and the pipe gripper includes a pipe shaft of each of the pipes. Locking means is provided which is configured to be able to be gripped even for a shift in the pitch between the pipes or for different pipe diameters, and a locking means for locking the gripping means while holding the respective pipes is provided in the main body. It is characterized by having been done.

Preferably, the grip means is a grip lever supported by the main body and movable between two positions, a grip position and a non-grip position.

Further, one of the tube holding portions for holding the respective tubes may be configured such that one tube holding portion is movable with respect to the other tube holding portion.

[0010] Further, a suspension device for suspending the plumbing device may be provided on the fixed holding body.

Furthermore, it is more preferable that the suspension device is configured so as to prevent the plumbing device from being lowered at a position where the plumbing device is raised.

[0012]

According to the present invention, the two-pipe fixing device for attaching and detaching the plumbing device holds the pipe gripping portion of the two-tube fixing device to the two pipes connected to the piping port before removing the existing plumbing device. By locking the two pipes at that position, even after the existing plumbing fixture is removed, the entire existing pipe can be fixedly supported in the same state as before the removal of the existing plumbing fixture. Moreover, when installing this two-tube fixing device,
Even if the pitch between the two pipe axes varies, the holding means of the pipe holding part is configured to be able to hold the two pipes. In addition, even if the pipe diameters are different, it can be easily gripped.

Therefore, for example, even when replacing the gas meter, even if the existing gas meter is removed and a new gas meter is attached, the pipe pitch between the pipe ports of the new gas meter is equal to that of the two fixed pipes. Since the pitch is substantially the same as the pitch between the pipe shafts, the work is not difficult at all, and the replacement work can be performed very easily. Moreover, since the position of the pipe is not forcibly adjusted, the pipe is not damaged.

Further, in this two-tube fixing device, since the gripping means is a gripping lever supported by the main body, the gripping lever can be gripped even with a pitch deviation between the two pipe axes or a different pipe diameter. The tube can be easily gripped only by different positions.

Also, if a two-tube fixing device is used in which one tube gripper is movable with respect to the other tube gripper, the pitch between the two tube axes changes greatly due to aging and the like. Even by moving one of the tube grips, the two tubes can be easily gripped.

In addition, a suspension device is provided in the main body.
If a pipe fixing device is used, when replacing a plumbing device, for example, when removing an existing gas meter or installing a new gas meter, the existing gas meter or a new gas meter can be hooked on a suspension device, The attachment / detachment work is further facilitated without having to support the hand.

Further, if a two-pipe fixing device capable of preventing the plumbing device from being lowered is used at the raised position of the suspended plumbing device, the plumbing device does not go down.
Plumbing equipment can be stably supported at the raised position,
Even in a state where the piping equipment is temporarily connected to the two pipes, the airtightness between the piping equipment and the existing pipe can be maintained without manually supporting the gas meter. Therefore, in the absence of gas leakage, various operations such as airtightness inspection (for example, the operation of inspecting the air tightness in the pipe with the existing gas meter attached, or collecting the gas from the existing gas meter In addition, it is possible to perform an operation of bleeding air from the gas meter and replacing it with a gas in a state where a new gas meter is attached, or an airtightness inspection in that state.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The two-tube fixing device of the present embodiment (hereinafter, referred to as a tube fixing jig) described below is described as being used for replacing an existing gas meter with a new gas meter, but is not limited thereto. The present invention can be used in the same manner even when attaching or detaching another plumbing device having a mouth formed side by side.

Normally, the gas meter 1 is placed outdoors as shown in FIGS.
And a secondary pipe 6 connected to various gas appliances 11 disposed in the house. In the gas meter 1, as shown in FIG.
On the upper surface, a primary-side piping port 2 and a secondary-side piping port 3 are formed, and each of the piping ports 2, 3 is connected upward with a pipe joint 8, via a rubber packing 7, 7 as a sealing member.
8 are connected.

The primary pipe 5 is connected to a gas supply source 12 through a gas plug 4 from a pipe joint 8 connected to the primary pipe port 2, and the secondary pipe 6 is connected to the secondary pipe port 3. A pipe member 10 for gas is connected from a pipe joint 8 to be connected, and is connected to various gas appliances 11 arranged in a house.
In the embodiment, the elbows 9, 9 are appropriately interposed in order to change the piping direction from the pipe joints 8, 8, but the present invention is not limited to this.

[0021] The pipe fixing jig can be easily mounted even if the pitch between the pipe axes of the two pipes is shifted or the pipe diameters are different, and after the pipe fixing jig is attached. Then 2
The configuration is not limited as long as the pitch between the pipe axes of the pipes can be fixed.

For example, the first embodiment of the pipe fixing jig 20 is as follows.
As shown in FIGS. 3 and 4, the tube grippers 28 and 38 are configured to be movable and adjustable between two tube axes. From this, even if the pitch of the two tubes is shifted, it can be easily fixed to the two tubes by moving one gripping lever.

In the present embodiment, the tube grips 28, 38
Although the configuration is such that the movement of the two tubes can be adjusted with respect to the tubes, even if the pitches of the two tubes are shifted, the tube grip 38 may be directly disposed on the main body 22 as long as the two tubes can be fixed. (This embodiment will be described in the second embodiment.) That is, as long as the two tubes can be fixed even if the pitch of the two tubes is shifted, the shape and configuration are not particularly limited.

More specifically, the fixed gripper 21 and the movable gripper 31 movable with respect to the fixed gripper 21 are provided, and the fixed gripper 21 and the movable support 31 are each provided with a pipe (an elbow in this embodiment). Tube holding portions 28 and 38 for holding the pipes 9 and 9) are formed, and a suspension device 40 is mounted on the fixed holding body 21.

The fixed holding body 21 has a substantially rectangular main body 22.
3, a projection 23 opened downward from the main body 22 and projecting in a substantially U-shape, a gripping lever 24 rotatably supported by the projection 23, and rotating and fixing the gripping lever 24. And a lever lock portion 25 that performs the operation.

A guide surface 2 for slidably guiding the main body 32 of the movable gripper 31 is provided on the main body 22 of the fixed gripper 21.
21, a fitting concave portion 220 having
A stopper portion 222 (a stopper 222a for the movable gripper 31 and a screw member 222b for fixing the main body portion 32 of the movable gripper 31) for restricting the movement of the main gripper 32 is formed. 22, the moving gripper 3
A lid 30 that covers the main body portion 22 of the fixed gripper 21 and the main body portion 32 of the movable gripper 31 from above in a state where the one main body portion 32 is fitted is attached.

The gripping lever 24 of the fixed gripping body 21 has a rotation center 241 at the center and a claw 242 at one end.
The other end has a rotating action portion 243 and is formed in a bell crank shape, and an elongated hole adjusting portion 244 is formed at the center so that the entire gripping lever 24 can move.
A support pin 231 provided on the protruding portion 23 is fitted into the elongated hole adjusting portion 244.
The rotation center 241 is formed so that it can move inside the elongated hole adjusting portion 244 and hold the claw portion 242 in accordance with the outer diameter of the elbow 9.

Therefore, the grip lever 24 is provided in the elongated hole adjusting section 2.
Since the center of rotation is moved by 44, even if the pipe diameters are different, the pipe can be easily gripped. Note that the grip lever 24 may simply form a hole supported by the support pin 231 instead of the elongated hole adjuster 244 as long as the pipe can be gripped at the grip position even if the pipe diameter is different. That is, the shape and configuration of the grip lever 24 are not particularly limited as long as the grip lever 24 can grip the pipe at the grip position even if the pipe diameter is different.

The opposing surfaces of the claw 242, the projection 23, and the main body 22 are formed with teeth to facilitate gripping and fixing the elbow 9, and the teeth 245 of the claw 242,
The tube grip 28 is formed including the teeth 232 of the projection 23 and the teeth 225 of the main body 22. In this embodiment, the teeth 225 of the main body 22 are formed at two places in the block attached to the main body 22 as shown in FIG. 3, but are formed directly on the side surfaces of the main body 22. It may be something. That is, the shape and arrangement of the tooth portion 225 are not particularly limited as long as the tube (elbow 9) can be gripped.

The lever lock portion 25 is composed of a screw member 26 connecting the main body portion 22 and the distal end portion 233 of the projection portion 23, and a nut 27 screwed to the screw member 26, and a grip through which the screw member 26 is inserted. By pressing the inner surface of the rotation acting portion 243 of the lever 24 with the nut 27, the gripping lever 24 is rotated to grip and lock the elbow 9.

The movable gripper 31 is formed substantially symmetrically with the fixed gripper 21 and is slidably disposed in the fitting recess 220 of the fixed gripper 21.

The movable gripper 31 has a substantially rectangular main body 32.
3, a projection 33 opened downward from the main body 32 and bent in a substantially U-shape, a gripping lever 34 rotatably supported by the projection 33, and rotating and fixing the gripping lever 34. And a lever lock portion 35 that performs the operation.

The main body 32 of the movable gripper 31 has sliding surfaces 321 and 321 slidable on the guide surfaces 221 and 221 of the main body 22 of the fixed gripper 21. The stopper portions 322 and 322 capable of contacting the stoppers 222a and 222a are formed at the upper and lower ends of the right end portion in FIG.

The gripping lever 34 of the movable gripping body 31 has a rotation center 341 at the center and a claw 342 at one end.
The other end has a rotating action portion 343 and is formed in a bell crank shape, and a central portion is formed with an elongated hole adjusting portion 344 so that the entire gripping lever 34 can move.
A support pin 331 provided on the projection 33 is fitted into the elongated hole adjustment part 344, so that the grip lever 34
The center of rotation 341 is formed so as to move within the elongated hole adjusting portion 344 so that the claw portion 342 can be gripped according to the outer diameter of the elbow 9.

Accordingly, the grip lever 34 is provided in the elongated hole adjusting section 3.
Since the center of rotation is moved by 44, even if the pipe diameters are different, the pipe can be easily gripped. Note that the grip lever 34 may simply form a hole supported by the support pin 331 instead of the elongated hole adjustment unit 344 as long as the pipe can be gripped at the grip position even if the pipe diameter is different. That is, the shape and configuration of the grip lever 34 are not particularly limited as long as the grip lever 34 can grip the pipe at the grip position even if the pipe diameter is different.

The opposing surfaces of the claw 342, the protrusion 33, and the main body 32 are formed with respective teeth so as to easily grip and fix the elbow 9, and the teeth 345 of the claw 342,
The tube grip 38 is formed including the teeth 332 of the projection 33 and the teeth 325 of the main body 32. In this case,
As in the case of the fixed gripper 21, the teeth 325 of the main body 32 are formed at two places in the block attached to the main body 32 as shown in FIG. May be used. That is, the shape and arrangement of the tooth portion 325 are not particularly limited as long as the tube (elbow 9) can be gripped.

The lever lock portion 35 is composed of a screw member 36 connecting the main body portion 32 and the tip portion 333 of the protrusion 33, and a nut 37 screwed to the screw member 36, and a grip through which the screw member 36 is inserted. By pressing the inner surface of the rotation acting portion 343 of the lever 34 with the nut 37, the gripping lever 34 is rotated to grip and lock the elbow 9. The shape and configuration of the nut 37 are not particularly limited as long as the nut 37 can be locked by gripping the elbow 9.

Further, the main body 32 of the movable gripper 31 is formed so that three elongated holes are arranged in parallel in the moving direction of the movable gripper 31, and faces the central elongated hole 323a. A female screw portion 223 (see FIG. 4 or FIG. 5) is formed in the main body portion 22 of the fixed gripping body 21 at a position where the main body 22 of the fixed gripping body 21 faces the front and rear long holes 323b and 323b. Are screw insertion holes 224 and 224, respectively.
(See FIG. 5), and the female screw portion 2 of the fixed gripping body 21 is formed.
The suspension device 40 is mounted on the screw holes 23 and the screw insertion holes 224 and 224.

The suspension device 40 is, as shown in FIGS.
The vertical adjustment screw 4 that can be raised and lowered by inserting the female screw 223 of the fixed grip 21 and the elongated hole 323a of the movable grip 31
1, the insertion hole 224 of the fixed grip 21, and the movable grip 3
1 elongate holes 323b, 323b can be inserted into the support screw portions 42, 42, the elevation adjustment screw portion 41, the support screw portion 42,
And a suspension unit 44 attached below the fixed gripping body 21 so as to connect the two support screw portions 42, 42 to each other. ing.

At the head of the elevating screw 41, the suspension 4
A knob 41a for raising and lowering the knob 4 is attached.
1a, the vertical adjustment screw 41 is moved within the female screw 223 of the fixed gripper 21 so that the connecting body 4
The suspension unit 44 is moved up and down via 3. A hook portion 44 is attached to a suspension portion 44 connected to the two support screw portions 42, 42.
is formed, and the hook 44a is hooked to, for example, a hanging fitting 1a disposed above the gas meter 1, so that when the gas meter 1 is replaced, the primary side piping port 2 or the secondary side piping of the gas meter 1 is replaced. Even if the union nut of the pipe joint 8 tightening the port 3 is loosened, the gas meter 1
Can be carried out without having to handle the gas meter 1 by hand, and airtightness between the gas meter 1 and the primary side pipe and the secondary side pipe can be maintained. Therefore, in the absence of gas leakage, various operations such as airtightness inspection (for example, inspection of the airtightness in the pipe with the existing gas meter 1 attached, collection of gas from the existing gas meter 1, With the new gas meter 1N attached, an operation of bleeding air from the gas meter 1N and replacing it with gas, or an airtightness inspection in that state can be performed.

It should be noted that the suspending portion 44 may have any shape as shown in FIGS. 4 and 5 as long as it can suspend the gas meter.

Next, the procedure of attaching the pipe fixing jig 20 of the first embodiment configured as described above to the two pipes will be described in the present embodiment by replacing the gas meter.

First, in a state where the existing gas meter 1 is connected to the primary pipe 5 and the secondary pipe 6, as shown in FIG. 6, a pipe fixing jig 20 is used as a connection port of the primary pipe 5. Elbow 9 and elbow 9 as a connection port of the secondary pipe 6
And fix it.

When the pipe fixing jig 20 is attached, first, the movable holding body 31 is slid from the fixed holding body 21 in accordance with the pitch between the pipe axes of the elbows 9, 9.
When the pitch substantially coincides with the pitch between the 9 pipe axes, the position is adjusted to match the pipe diameter of each elbow 9, and the gripping levers 24, 34 are sequentially fixed to the respective elbows 9, 9. For example, as shown in FIG. 3, the gripping lever 24 of the fixed gripping body 21 is moved along the elongated hole adjusting part 244 in order to make the pipe gripping part 28 have substantially the same diameter as the pipe diameter of the elbow 9, 242 is held by the elbow 9. Then, the rotation operating portion 243 is pressed by tightening the nut 27 of the lever lock portion 25, and the gripping lever 24 is rotated counterclockwise in FIG. 3 with respect to the rotation center 241 of the gripping lever 24. Fix it.

Next, the gripping lever 34 of the movable gripping body 31
Is similarly moved along the elongated hole adjusting portion 344 to grip the elbow 9, and then the nut 3 of the lever lock portion 35 is moved.
7. The rotation operating part 343 is pressed, and the elbow 9 is fixed by rotating the gripping lever 34 clockwise in FIG. 1 with respect to the rotation center 341 of the gripping lever 34. Thereafter, the movable holding body 31 is fixed to the fixed holding body 21 by screwing the screw member 222 b of the stopper 222.

As shown in FIG. 6, when the mounting of the pipe fixing jig 20 is completed, the knob 41a of the suspending device 40 is operated to move the position of the suspending portion 44 in the vertical direction. The first hanging metal part 1a is hooked on the hook part 44a of the hanging part 44 of the pipe fixing jig 20.
At this time, if the operation of the knob 41a acts to pull up the suspension unit 44, the gas meter 1
And the gas meter 1 is prevented from lowering.

In this state, even if, for example, the union nut of the pipe joint 8 for tightening the primary piping port 2 or the secondary piping port 3 of the gas meter 1 is loosened, the operation can be performed without holding the gas meter 1 by hand. Can be performed, and it is possible to maintain the airtightness between the gas meter 1 and the primary side pipe and the secondary side pipe. The operation of recovering the gas in 1 can be performed.

When the gas plug 4 is closed and the gas collection operation and the airtightness inspection are completed with the existing gas meter 1 mounted, the existing gas meter 1 is removed as shown in FIG. Connect the existing gas meter 1 to the primary pipe 5
When the secondary pipe 6 is removed from the secondary pipe 6, stress is applied to the entire pipe due to aging or the like, and the pitch between pipe axes tends to change. However, the primary pipe 5 and the secondary pipe 6 are fixed to the pipe. Since it is fixed by the jig 20, the pitch between the tube axes does not change.

Therefore, as shown in FIG. 8, when connecting a new gas meter 1N to the primary pipe 5 and the secondary pipe 6, the elbows 9, 9 of the primary pipe 5 and the secondary pipe 6 are connected.
Is substantially the same as the pitch between the pipe axes between both pipe ports of the new gas meter 1N, so that the installation of the new gas meter 1N can be performed very easily.

Further, at this time, by operating the knob 41a, the suspension fitting portion 1a of the new gas meter 1N is suspended on the suspension portion 44 of the suspension device 40 of the pipe fixing jig 20 by operating the knob 41a. Hang it. Thereby, for example, the primary side piping port 2, the secondary side piping port 3, and the new gas meter 1N,
And the primary-side pipe 5 and the secondary-side pipe 6 can be supported by the suspension device 40 in a temporarily connected state, so that the air of the new gas meter 1N is discharged while maintaining the airtight state in the pipe including the new gas meter 1N. It is possible to carry out the work of extracting and replacing with gas or the work of checking the air tightness. Moreover, since the gas meter 1 does not need to be supported by hand, the operation can be performed more easily.

Therefore, when the pipe fixing jig 20 of the first embodiment is used, even if the pitch between the pipe axes of the two pipes greatly changes due to aging or the like, it is necessary to cope with the large movement adjustment amount. It can be made compact when carrying.

Next, the pipe fixing jig 50 of the second embodiment is shown in FIG.
This will be described based on FIGS. This embodiment has a simpler configuration than the tube fixing jig 20 of the first embodiment, and can be manufactured at low cost.

The pipe fixing jig 50 has a single plate-shaped main body 5.
1, a pair of gripping levers 60 rotatably supported by the main body 51, a lock device 70 for locking the gripping levers 60 at a gripping position, and a suspension device 80.

As shown in FIG. 9, the main body 51 has recesses 53, 53 for forming the tube grips 65, 65, and supports the grip lever 60, the lock device 70, and the suspension device 80. It is not particularly limited as long as it is formed so that it can be mounted, but in the embodiment, a projection 52 is provided at a central portion on one side in the longitudinal direction, and a concave portion 53 is provided on both sides of the projection. 53 are formed, and the whole is formed in a substantially chevron shape.

In the embodiment, a pipe (elbow 9) is inserted into each of the recesses 53, and is formed at an angle so that the outer peripheral surface of the elbow 9 can be abutted. A tooth portion 531 is formed on the surface which is formed at an angle and supports the outer peripheral surface of the elbow 9 so that the elbow 9 can be easily gripped. However, the present invention is not limited to this, and it is easy to grip the pipe (elbow 9). What is necessary is just to be formed as follows.

Further, support pins 54, 54 are implanted so as to be located outside the respective recesses 53, 53 of the main body 51,
Screw holes 55, 55 for screwing the lock portion are formed at both ends of the end surface of the main body 51 opposite to the concave portion 53. Further, as shown in FIG. 11, a pair of small holes 57, 57 and a screw hole 58 arranged between the pair of small holes 57, 57 are formed between the concave portions 53, 53, and the suspension device 80 is mounted. You.

Each gripping lever 60 is not particularly limited as long as it has a gripping portion and can be moved to a position for gripping the elbow 9 and a non-grip position. In the embodiment, as shown in FIG. A support hole 61 (which may be formed in an elongated hole shape) into which the 54 is fitted, a gripping arm portion 62 extending from the support hole 61 to one side, and an operation arm portion 63 extending to the other side. , And a grip 622 having teeth 621 is formed on the grip arm 62. In the embodiment, the tooth portions 531 and 531 of the main body 51 are provided.
The elbow 9 can be gripped by the tooth portion 621 of the grip lever 60 and the concave portions 53 and 53 of the main body 51 and the grip lever 6.
The tube grips 65, 65 are formed by 0 and 60.

The grip lever 60 may be arranged so as to be symmetrical with respect to the concave portion 53 than the position shown in the example. Further, the teeth 531 formed in the recess 53 may not be formed directly on the main body 51 but may be formed on a plate separately mounted on the main body 51. In any case, as long as the tube (elbow 9) can be gripped, it may be formed in any way regardless of whether or not it is formed in the main body 51.

The shape and configuration of the lock device 70 are not particularly limited as long as the lock device 70 is formed so as to be able to be locked while rotating the grip lever 60 and moving to the grip position of the elbow 9. However, in the embodiment,
As shown in FIG. 9, the handle portion 72 is formed by a screw portion 71 and a large-diameter handle portion 72, and the handle portion 72 is formed with a tapered surface 73 toward the screw portion 71. The operating arm 63 of the grip lever 60 is in contact with the tapered surface 73, and the locking device 70 is moved in and out of the main body 51 by rotating the handle 72, so that the locking device 70 is in contact with the tapered surface 73. The operating arm 63 of the grip lever 60 is rotated with respect to the support pin 54 to move the grip arm 62 closer to or away from the elbow 9, and the elbow 9 can be gripped.

The suspension device 80 may be any device that can suspend the existing gas meter 1 or a new gas meter 1N.
Although there is no particular limitation, for example, the suspension unit 40 used in the first embodiment can be used as it is, but in the embodiment, the existing gas meter 1 or a new gas meter 1N is suspended and the existing gas meter 1N is suspended. By maintaining the gas meter 1 or the new gas meter 1N at the raised position, it is configured to be able to prevent the descent similarly to the first embodiment.

As shown in FIGS. 10 to 11, a vertically adjusting screw portion 81 which can be screwed into the screw hole 58 of the main body portion 51 and raised and lowered.
, Hook connecting rods 82, 82 inserted through the small holes 57, 57 of the main body 51, an elevation adjusting screw 81, and a hook connecting rod 8.
2 and 82 are connected to each other above the main body 51.
And a pair of hook connecting rods 82, 82 below the main body 51.
And a hook (suspended portion) 84 that is connected to

A knob 81a for rotating the elevating screw 81 is mounted above the elevating screw 81.
The hook connecting rods 82, 82 are inserted into the connecting body 83, and are engaged with the locking seats 82a, 82a which are locked on the upper surface of the connecting body 83.
Is provided. Further, the hook 84 is formed with a retaining portion 84a when the hanging bracket 1a of the new gas meter 1N is locked so as to protrude from the lower upper surface.

Further, the hook connecting rods 82 are connected to the hook 84 by screw connection through a spring seat 85 disposed below the connecting body 83. The spring seat 85 is supported by a nut member 87 screwed into the elevation adjustment screw portion 81, and coil springs 86, 86 which are externally fitted to the hook connecting rods 82, 82 and one end of which is hooked, respectively, A hook stopper 88 that fits externally to the screw portion 81 is attached.

The other ends of the coil springs 86, 86, each of which is hooked on a spring seat 85, are hooked on a connecting member 83.
Move toward the connector 83, the coil spring 8
6, 86 act to bias the connector 83.

When the spring seat 85 is at the lower position, the hook stopper 88 has a gap between the upper surface and the connecting member 83. The hook stopper 88 approaches the connecting member 83 when the spring seat 85 rises. The contact of the spring seat 85 stops lifting.

The hook 84 is formed in a U-shape in cross section, and can support the gas meter 1N by, for example, hooking a hanging metal part 1a disposed above the new gas meter 1N.

When the pipe fixing jig 50 is attached to the elbows 9, 9 by gripping the gripping levers 60, 60, as described in the first embodiment, the above-described gas meter is used. Thus, the union nut of the pipe joint 8 is loosened by hooking the hanging bracket 1a on the hook 84 of the suspension device 80. Then, in a state where the airtight state is maintained, it is possible to perform the inspection of the airtightness in the pipe including the existing gas meter 1 and the operation of collecting the gas from the existing gas meter 1.

After removing the existing gas meter 1 from the piping ports 2 and 3, a new gas meter 1N is mounted. This operation will be described with reference to FIGS.

FIGS. 12 and 13 show elbows 9 and 9 of the existing piping.
This shows a state in which the hanging metal part 1a of the new gas meter 1N is hung on the hook 84 of the hanging device 80 of the pipe fixing jig 50 attached to the pipe fixing jig 50. Is attached to the pipe joint 8 of the primary pipe, and the secondary pipe port 3 and the pipe joint 8 of the secondary pipe are attached.
And the gas meter 1N is in a slightly inclined state. At this time, the hook 84 is at a position lowered by rotating the knob 81a.

When the knob 81a is rotated upward, FIG.
As shown in FIG. 4, the elevation adjusting screw portion 81 is rotated with respect to the main body portion 51, and the gas meter 1N hooked on the suspension device 80 and the hook 84 is raised. The gas meter 1 </ b> N is tilted about the pipe axis of the primary pipe port 2 so that the secondary pipe port 3 approaches the pipe joint 8, and the secondary pipe port 3 abuts on the pipe joint 8.

Further, when the knob 81a is rotated upward, as shown in FIG.
In the suspension device 80 contacted by the above, the connecting body 83, the hook connecting rods 82, 82 and the hook 84 are stopped from rising,
The spring seat 85 is raised by the rotation of the lifting adjustment screw portion 81. When the spring seat 85 is raised, the hook stopper 88 is raised, and the coil springs 86, 86 are reduced with respect to the stopped connection body 83.
To prevent the connecting body 83 from moving downward. By preventing the downward movement of the connecting body 83,
The hook 84 and the gas meter 1N are prevented from lowering.

While the new gas meter 1N is supported by the suspending device 80, the secondary pipe port 3 of the new gas meter 1N is temporarily connected to the secondary pipe 6, for example, in the new gas meter 1N. The air can be removed and replaced with a gas, or the air density in the gas meter 1N after the replacement can be inspected.

As shown in FIG. 15, the spring seat 85 stops rising when the upper surface of the hook stopper 88 comes into contact with the connecting member 83. As a result, the hook 84 and the gas meter 1N are maintained at a position where the secondary-side pipe port 3 is in contact with the pipe joint 8, and it is not necessary to manually support the new gas meter 1N. Easy to do.

As described above, the pipe fixing jig is, as shown in the first and second embodiments, an existing gas meter 1.
Before removing the gas meter 1, the pair of elbows 9, 9 connected to the pipe ports 2, 3 grip the pipe gripper and lock the pipe at that position. The gas meter 1 can be fixedly supported in the same state as before the removal. Moreover, when the pipe fixing jig 20 (or 50) is attached, even if the pitch between the pipe axes of the pair of elbows 9 and 9 varies, the gripping levers 24 of the pipe grippers 28 and 38 (or 65) can be used. 34 (or 60) can change the gripping position with respect to the elbow 9, so that it can be gripped according to the current pitch between the pipe axes, and even if the pipe diameter of the elbow is different, it can be easily gripped. Can be done. Therefore, the operation of removing the existing gas meter 1 and attaching a new gas meter 1N can be performed extremely easily.

The pipe fixing jig 20 (or 50)
Since the gripping means is the gripping levers 24, 34 (or 60) rotatably supported by the main bodies 21, 31 (or 51), the pitch deviation between the tube axes of the pair of elbows 9, 9 or For different tube diameters, the gripping levers 24, 34
The elbows 9, 9 can be easily gripped only by different rotation angles of (or 60).

Further, the tube fixing jig 2 in which one tube holding portion 38 is movable with respect to the other tube holding portion 28.
If 0 is used, a pair of elbows 9 due to aging, etc.
Even if the pitch between the pipe axes 9 greatly changes, the pitch between the pipe axes can be easily adjusted by moving one of the pipe grips 38.

Further, the suspension device 40 is attached to the main bodies 21 and 51.
(Or 80), when removing the existing gas meter 1 or installing a new gas meter 1N, the existing gas meter 1 (or new gas meter 1)
If N) is hung on the suspension device 40 (or 80), the existing gas meter 1 or a new gas meter 1N can be easily attached and detached without having to be manually supported.

Further, the pipe fixing jig 20 (or 50)
Can prevent the gas meter 1N from lowering at the rising position of the suspended new gas meter 1N, so that the gas meter 1N does not go down, and when the gas meter 1N is connected to the existing pipe, the gas meter 1N is raised. In addition to being able to be stably supported at the position, when removing the existing gas meter 1 or installing a new gas meter 1N, the existing gas meter 1
Even if the union nut of the pipe joint 8 that is tightening the primary pipe port 2 or the secondary pipe port 3 (or the new gas meter 1N) is loosened, the existing gas meter 1 (or the new gas meter 1N) and the primary pipe are connected. 5 and the secondary pipe 6 can be kept airtight. Therefore, since there is no gas leakage, various operations such as airtightness inspection (for example, checking the air tightness in the pipe with the existing gas meter 1 attached, and collecting gas from the existing gas meter 1) Work, new gas meter 1
An operation of bleeding air from the gas meter 1N and replacing it with gas in a state where N is attached, or an inspection of air tightness in that state can be performed.

[Brief description of the drawings]

FIG. 1 is a simplified diagram showing a state in which a gas meter is piped.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a plan view of a pipe fixing jig according to the first embodiment of the present invention.

4 is a sectional view taken along line IV-IV in FIG.

5 is a sectional view taken along line VV in FIG. 3;

FIG. 6 is a simplified view showing a state where the pipe fixing jig of FIG. 3 is attached.

FIG. 7 is a simplified diagram showing a state where an existing gas meter is removed.

FIG. 8 is a simplified diagram showing a state where a new gas meter is attached.

FIG. 9 is a plan view of a pipe fixing jig showing a second embodiment.

10 is a view taken in the direction of the arrow X in FIG. 9;

FIG. 11 is a sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is a simplified diagram showing a state before a new gas meter is suspended from a suspension device.

FIG. 13 is a simplified diagram showing a state in which a new gas meter is hung on a suspension device.

FIG. 14 is a simplified diagram showing a state in which a new gas meter is raised by a suspension device.

FIG. 15 is a simplified diagram showing a state in which a new gas meter is prevented from being lowered by a suspension device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Existing gas meter 1N ... New gas meter 2 ... Primary-side piping port 3 ... Secondary-side piping port 4 ... Gas stopper 5 ... Primary-side piping 6 ... Secondary-side piping 9 ... Elbow 20, 50 ... Pipe fixing jig 21 ... fixed grippers 22, 32 ... main body parts 23, 33 ... protrusions 24, 34, 60 ... grippers 25, 35 ... lever locks 28, 38, 65 ... pipe grippers 31 ... movable grippers 40, 80 ... suspension Suspension device 44 ... Suspension unit 51 ... Main unit 70 ... Lock device 84 ... Hook

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Miyuki Tadokoro 1-35 Oise-cho, Nakagawa-ku, Nagoya City, Aichi Prefecture Inside (72) Inventor Hideki Ogi 1-35 Oise-cho, Nakagawa-ku, Nagoya City, Aichi Prefecture Asahi Seiki Co., Ltd. F-term (reference) 2F030 CC13

Claims (5)

[Claims] 1. A two-pipe fixing device for attaching and detaching a plumbing device configured such that a pipe is connected to each of two pipe ports formed in the plumbing device so that the respective pipes can be gripped. The pipe fixing device is configured to include a pipe gripper that grips each of the pipes and a main body that supports the pipe gripper, wherein the pipe gripper has a pitch between pipe axes of the respective pipes. A locking means configured to be able to be gripped even for misalignment or a different pipe diameter, and a locking means that is locked in a state where the gripping means grips the respective pipes is provided in the main body. A two-tube fixing device for attaching and detaching plumbing fixtures. 2. A plumbing device according to claim 1, wherein said gripping means is a gripping lever supported by said main body and movable between two positions, a gripping position and a non-gripping position. 2 tube fixing device. 3. The plumbing instrument according to claim 1, wherein one of the tube grippers for gripping each of the tubes is configured to be movable with respect to the other tube gripper. Two-tube fixing device for attaching and detaching. 4. The two-pipe fixing device according to claim 1, wherein a suspension device for suspending the plumbing device is provided on the fixed holding body. 5. The two-pipe according to claim 4, wherein the suspension device is configured to prevent the plumbing device from being lowered at a position where the plumbing device is raised. Fixing device.