JP2018192560A - Auxiliary tool for pipe joint - Google Patents

Abstract

To provide an auxiliary tool which is lightweight and can be easily carried when connecting a pipe joint, to which a flexible pipe has been connected, to a fire extinguishing equipment pipe, and can continuously transmit a rotating motion to a pipe joint when connecting the pipe joint.SOLUTION: An auxiliary tool H used for a pipe joint T1 which has a screw structure connected to a mating joint T2 on one end side and is installed with a flexible pipe F and a grip portion 5 on the other end side and whose inside has a hollow shape allowing the passage of a fluid consists of a main body 1 having an inner peripheral portion 11 detachably engaged with the grip portion 5 of the pipe joint T1, and a plurality of operation portions 2 installed on an outer peripheral portion 12 of the main body 1. The main body 1 is installed with a lack portion 13 allowing the main body 1 to be attached to and detached from the grip portion 5.SELECTED DRAWING: Figure 1

Description

The present invention relates to an auxiliary tool used for attaching / detaching a pipe joint.

  Sprinkler equipment is installed in buildings, shopping centers, etc., which store water for extinguishing fire, sprinkler heads for spraying water, piping for fire extinguishing equipment connecting water tanks and sprinkler heads, water for water tanks Is composed of equipment such as a pump for feeding water to the sprinkler head. Fire extinguishing equipment piping is filled with pressurized water.

  The sprinkler head is mainly installed at a high position such as directly below the roof in a building without a ceiling surface or a ceiling such as a warehouse. Therefore, fire extinguishing equipment piping that sends water from the water storage tank to the sprinkler head is laid at a high position in the room. We are working to connect. Therefore, the construction of fire extinguishing equipment piping was a work at a high place where the foot was unstable, and the burden on the worker was great.

The sprinkler head is installed in a state of being embedded in the ceiling, and the sprinkler head and the fire extinguishing equipment piping are laid on the back of the ceiling. In addition to fire-extinguishing equipment piping on the back of the ceiling, various equipment such as lighting equipment, electrical wiring, air-conditioning ducts, etc. are installed, so the sprinkler head can be bent through flexible piping with flexibility. It is connected to the.

The diameter of the connecting part between the flexible piping and the fire extinguishing equipment piping is mainly 16A to 25A, and the connecting structure is a taper screw structure for the pipe. As a result, the sealing tape is digged between the threads and the sealing property is obtained.

However, if a person unaccustomed to the work performs the above work, leakage may occur. The leaked part was reworked, which was a factor in reducing work efficiency. Further, in the above work, it is necessary to use a dedicated tool for screwing with a predetermined torque. More specifically, a metal wrench or spanner is used as a dedicated tool, and this heavy metal tool is used to connect a flexible pipe to a pipe joint on the fire extinguishing equipment piping side installed overhead. The work was a heavy burden on the workers.

On the other hand, Patent Document 1 discloses a pipe joint connection structure that does not require a tool. The connection procedure of the pipe joint described in Patent Document 1 is such that the fitting cylinder 36 of the second member 32 is fitted on the outer periphery of the insertion cylinder 35 of the first member 1, and the tip of the fitting cylinder 36 is abutted and stopped by the protrusion 39 The cap nut 34 is turned by hand, and the female screw portion 41 of the cap nut 34 is screwed into the male screw portion 40 of the insertion tube 35 and tightened to bring the pair of locking collar portions 37 close to each other. Next, the band 38 is fitted on the outer periphery of the pair of locking collars 37, and the locking slit 42 is locked to the pair of locking collars 37. This completes the connection.

The pipe joint of Patent Document 1 does not need to be tightened with a predetermined torque as in the conventional taper screw structure for pipes, and can connect the flexible pipe and the fire extinguishing equipment pipe with a light force enough to rotate the pipe joint. Although there is an advantage that it is not necessary, if many pipe joints are connected over a long period of time, the gripping force may be reduced, and the work efficiency may be deteriorated.

More specifically, when connecting a pipe joint installed at one end of the flexible pipe to a pipe joint of a fire extinguishing equipment pipe installed overhead, the connection work of the pipe joint is performed with the arm raised. When rotating the pipe joint, it is necessary to continue the work with the arm raised until the screw connection is completed because the finger is rotated.

In addition, if the flexible piping is long, it is 5 m or more, and the weight increases accordingly. When connecting a pipe joint installed at one end of a flexible pipe to a pipe joint on the fire extinguishing equipment pipe side, the pipe joint must be connected to the fire extinguishing equipment pipe side while supporting the flexible pipe. It was one factor that decreased.

JP-A-5-164277

Therefore, in the present invention, in view of the above problems, when connecting the pipe joint to which the flexible pipe is connected to the fire extinguishing equipment pipe, it is light and easy to carry, and when connecting the pipe joint, An object of the present invention is to provide an auxiliary tool capable of continuously transmitting rotational motion.

In order to achieve the above object, the present invention provides the following fitting aid for a pipe joint.
That is, it has a screw structure that connects to the mating joint on one end, flexible pipes and grips are installed on the other end, and the inside is an auxiliary tool used for a hollow pipe joint that allows fluid to pass through. A main body having an inner peripheral portion detachably engaged with the gripping portion of the pipe joint, a plurality of operation portions installed on the outer peripheral portion of the main body, and a lacking portion that allows the main body to be attached to and detached from the gripping portion Is an auxiliary tool for pipe joints installed in the main body.

  According to this, when a pipe joint installed at one end of the flexible pipe is rotated and connected to a pipe joint on the fire extinguishing equipment pipe side, a pipe joint auxiliary tool (hereinafter referred to as an auxiliary tool) is attached to the pipe joint grip. ) To engage the main body and rotate the operation section to connect the pipe joint to the pipe joint on the fire extinguishing equipment piping side. In the above-described prior art, the pipe joint is rotated by the operation of the finger. If this is the case, only the finger is moved while the arm is raised, and the arm and the finger are fatigued. Rotating the arm moves the arm and elbow up and down, reducing the burden on the operator.

Also, when rotating the gripping part with a conventional spanner, the pipe joint can be rotated by grasping the handle part by hand and rotating the tool. However, if the tool is rotated to some extent, the handle position is far away. Therefore, it is necessary to remove the tool from the gripping portion and change the tool to the gripping portion so that the handle comes to the front. On the other hand, since the main body of the auxiliary fitting for pipe fittings according to the present invention has a plurality of operation sections, when one operation section is rotated, the other operation section moves forward. Further, it is possible to transmit the rotational motion continuously to the pipe joint by rotating it.

Further, the main body is provided with a lacking portion so that the gripping portion can pass through the lacking portion. Since flexible piping is connected to one end of the pipe joint, even if the spectacle wrench is to be engaged with the gripping portion, it is blocked by the flexible piping and cannot be engaged. In the present invention, the gripping part and the inner peripheral part of the main body can be detachably engaged by the lacking part.

A magnet can be installed on the main body. In the case where the pipe joint is made of a magnetically attachable material such as iron, the auxiliary tool can be held on the pipe joint by the magnetic force of the magnet even if the operator removes his / her hand from the operation unit. The magnet may be installed on the inner peripheral surface of the main body, or may be installed on a plane that intersects the inner peripheral surface of the main body.

As described above, according to the present invention, by installing a plurality of operation parts on the auxiliary tool, it is possible to transmit the rotation operation continuously to the pipe joint, and to efficiently perform the connection work of the pipe joint. it can. Furthermore, an operator's burden can be reduced by using an auxiliary tool.

The figure which shows the pipe joint which uses the auxiliary tool and auxiliary part of this invention (a flexible piping is abbreviate | omitted). The perspective view of the pipe joint to which the auxiliary tool of FIG. 1 is applied. The fragmentary sectional view of the pipe joint of FIG. 2 and the pipe joint of the fire extinguishing equipment piping side. The figure which shows the installation state of fire extinguishing equipment piping. The half sectional view of the conventional pipe joint structure.

The auxiliary portion H of the present invention shown in FIG. 1 is applied to a pipe joint T1 in which a flexible pipe F is installed at one end (see FIG. 2). The pipe joint T1 is connected to a pipe joint T2 installed at the end of the fire extinguishing equipment pipe P (see FIG. 3). The other end of the pipe joint T1 is provided with a male screw 3 connected to the pipe joint T2, and the male screw 3 has a parallel screw structure. Correspondingly, the pipe joint T2 is provided with a female screw 4 that can be screwed into the male screw 3. The insides of the pipe joints T1, T2 are hollow and fluid can pass through.

A grip 5 is formed on one end of the pipe joint T1 to which the flexible pipe F is connected. The grip portion 5 has a polygonal cross-sectional shape, and the cross-sectional shape is an octagon as shown in FIGS. 1 and 2. Between the grip part 5 and the male screw 3, a collar part 6 is installed. The outer diameter of the collar part 6 is larger than the outer diameters of the grip part 5 and the male screw 3.

As shown in FIG. 4, a sprinkler head S is connected to the end of the flexible pipe F installed at one end of the pipe joint T1. The flexible pipe F is short and less than 1 m, and long and has a length of 5 m or more. Before the pipe joint T1 is connected to the pipe joint T2, the flexible pipe F is in a coiled state.

The flexible pipe F is connected to the cylindrical connector 7 inside the pipe joint T1, and the connector 7 and the pipe joint T1 can rotate about their respective axes. That is, the pipe joint T1 can rotate freely with respect to the flexible pipe F, and when the pipe joint 1 is screwed into the pipe joint T2, the flexible pipe F does not rotate but only the pipe joint T1 can rotate.

The auxiliary tool H of the present invention shown in FIG. 1 is made of resin. Since the pipe joints T1 and T2 have a parallel screw structure, it is not necessary to tighten them with a predetermined torque unlike a taper screw, and the rotational force required for connecting the screws can be small, so that the auxiliary tool H can be made of resin. . Alternatively, a metal core material may be embedded in the resin. Thereby, the auxiliary tool H can be configured to be light and easy to carry.

The auxiliary tool H includes a main body 1 and an operation unit 2. The main body 1 has a ring shape and has an inner peripheral portion 11 and an outer peripheral portion 12. The inner peripheral portion 11 is engageable with the grip portion 5 having an octagonal cross section, and has a shape along the cross section of the grip portion 5. A lacking portion 13 is provided between the inner peripheral portion 11 and the outer peripheral portion 12, and the gripping portion 5 is configured to be detachable from the inner peripheral portion 11 through the lacking portion 13. In FIG. 1, the width La of the missing portion 13 is configured to be slightly larger than the distance Lb between two planes facing in parallel in the cross-sectional shape of the grip portion 5.

Since the flexible pipe F is connected to one end of the pipe joint T1, it is difficult to engage the inner peripheral part 11 of the main body 1 with the grip part 5 without the lacking part 13. The grip part 5 and the inner peripheral part 11 can be easily and detachably engaged by the lack part 13.

The main body 1 has a thickness of about several mm to 10 mm, and is configured to be shorter than the length of the grip portion 5 so as to reduce the weight. When the pipe joint T1 is made of a magnetically attachable material such as iron, the magnet 15 can be installed at the inner peripheral portion 11 and the vicinity thereof.

The material of the pipe joint T1 of this embodiment is iron, and a magnet 15 is installed on the main body 1. The magnet 15 is installed on a flat surface 16 adjacent to the inner peripheral portion 11, and the flat surface 16 intersects the flat surface 11 a of the inner peripheral portion 11. The magnet 15 provided on the flat surface 16 is magnetically attached to the flange portion 6 of the pipe joint T1, and the auxiliary tool H is engaged with the grip portion 5 by the magnetic force of the magnet 15 even when the operator releases his hand from the operation portion 2. Can be maintained.

In addition to the above, the magnet 15 can be installed on the flat surface 11a of the inner peripheral portion 11, and the magnet 15 and the grip portion 5 can be magnetized.

A plurality of operation units 2 (2a, 2b, 2c) are installed on the outer peripheral part 12 of the main body 1, and are extended radially from the outer peripheral part 12. In this embodiment, it has three operation parts 2a, 2b, and 2c. The operation unit 2 is installed adjacent to the lacking unit 13, and the interval θ between the operation unit 2 and the adjacent operation unit 2 is installed at substantially equal intervals (about 120 ° intervals). As a result, when the operation unit 2 is rotated, the rotation angles per place are substantially equal, and the work load is not biased.

Also, since a plurality of operation units 2 are installed in the main body 1, when one operation unit 2a is rotated, the adjacent operation unit 2b moves to the front. When the operation unit 2b is further rotated, the operation unit 2c moves forward. Thus, the pipe joint T1 can be continuously rotated by sequentially rotating the plurality of operation units 2a to 2c.

Next, the procedure for connecting the pipe joints T1, T2 using the auxiliary tool H of the present invention will be described.

As shown in FIG. 3, a pipe joint T2 is installed at the tip of the fire extinguishing equipment pipe P. A flexible pipe F is installed on one end side of the pipe joint T1, and a male screw 3 connected to the pipe joint T2 is provided on the other end side. First, the tip of the connector 7 of the pipe joint T1 is inserted into the back of the pipe joint T2, and the tip of the male screw 3 is screwed with the female screw 4 of the pipe joint T2.

Subsequently, the holding part 5 is passed through the lacking part 13 of the main body 1 to engage the inner peripheral part 11 with the grip part 5. At the same time, the magnet 15 installed on the flat surface 16 is magnetically attached to the flange 6. Next, the operation units 2a to 2c are sequentially rotated to screw the male screw 3 into the female screw 4. At this time, since the auxiliary tool H is held by the flange portion 6 of the pipe joint T1 by the magnet 15, the auxiliary tool H does not fall off the grip portion 5 even if the operator releases his hand from the operation unit 2.

Further, the pipe joint T1 is rotated, and when the pipe joint T1 stops rotating, the auxiliary tool H is removed from the grip portion 5. After this, if necessary, a measure for preventing loosening of the screws is taken and the operation is completed.

In addition, in the said embodiment, although the flexible pipe F was connected to the pipe joint T1, the steel pipe, the copper pipe, the stainless steel pipe, the resin pipe, etc. are applied instead of this, instead of this flexible pipe. Even if it comprises, the effect demonstrated above can be acquired.

1 body
2 (2a, 2b, 2c) operation unit
3 Male screw
4 Female screw
5 gripping part
6 Buttocks
7 Connector
11 Inner circumference
12 outer periphery
13 missing part
15 Magnet
H assistive device
T1, T2 pipe fittings
S sprinkler head
P Fire extinguishing equipment piping

Claims (3)

It has a screw structure that connects to the mating joint on one end side, flexible piping and a gripping part are installed on the other end side, and the inside is an auxiliary tool used for a hollow pipe joint that allows fluid to pass through,
A main body having an inner peripheral portion detachably engaged with a gripping portion of the pipe joint;
A plurality of operation units installed on the outer periphery of the main body,
An auxiliary tool for a pipe joint, characterized in that a lacking part that allows the main body to be attached to and detached from the gripping part is installed in the main body.   The auxiliary tool for a pipe joint according to claim 1, wherein a magnet is installed in the main body. The auxiliary tool for a pipe joint according to claim 2, wherein the magnet is installed on a plane intersecting the inner edge surface of the main body.

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