JP2996276B2 - Inspection device for seal material position in pipe joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for inspecting the position of a sealing material in a pipe joint in which the sealing material is compressed between an inner peripheral surface of a receiving port of a pipe and an outer peripheral surface of an insertion opening.

[0002]

2. Description of the Related Art Conventionally, as one type of pipe joint, an insertion port of another pipe is inserted into a reception port of one pipe, and a gap between an inner peripheral surface of the reception port and an outer peripheral surface of the insertion port is formed. There is a so-called slip-on type pipe joint which compresses a sealing material.
In this slip-on type pipe joint, the joint is joined by inserting an insertion port into a reception port containing a sealing material at a predetermined position. For this reason, the sealing material may shift to the inner side of the receiving port due to frictional force at the time of joining, which causes leakage of the fluid in the pipe.

Conventionally, as a countermeasure, a worker inserts a thin-plate Feller gauge through a gap between the receiving port and the insertion port at the opening end of the receiving port to check whether the sealing material is present at an appropriate position. ing.

[0004]

However, there is a problem that it is extremely inefficient to manually insert a thin-film Feller gauge through such a small gap between the receiving port and the insertion port. In addition, when laying a pipeline in a trench excavated from the ground surface, an operator must enter the trench at the time of inspection, which poses a problem of danger.

Accordingly, the present invention has been made to solve the above problems, and has been made so that the position of the sealing material of a slip-on type pipe joint in a pipe laid in a groove can be efficiently inspected by remote control from above the groove. The purpose is to do.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a holding member which is positioned and attached in the pipe axis direction to an end face portion of a socket into which an insertion hole is inserted, and a peripheral member of the holding member. An inspection tool at a sealing material position provided at an appropriate position in the direction, the inspection tool is configured to be movable along the frame, and a receptacle and an insertion port at an end face of the receptacle. A thin plate-shaped Feller gauge that can be inserted from the gap until it hits the sealing material, a tubular body extending from the frame to a remote position, and a free end that is passed through the tubular body in the length direction and is movable. Is connected to the Feller gauge in the frame, and the other end protrudes from the tubular body at the remote position. And a wire-shaped member for performing an insertion operation on the upper and lower ends of the holding member. An arm, which is suspended in an open state and is configured to be closed by its own weight when the opening / closing center is seated on the top of the insertion opening and the reception opening, and the holding member is configured to have a closed arm And a lock device that can lock the ends of the locks and can release the lock by remote control at the remote position.

[0007]

According to the above construction, if the holding member is mounted on the end face of the socket in a positioned state, and the other end of the wire is moved in the length direction at a remote position, it is interlocked therewith. Then, the Feller gauge connected to one end of the wire is inserted into the gap of the receiving port until it hits the sealing material. At this time, by observing the relative movement amount of the wire-like body with respect to the tube-like body at a remote position, the amount of the Feller gauge entering the gap, that is, the position of the sealing material is inspected. After the inspection is completed, the lock of the lock device can be released by remote control at a remote position.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numerals 1 and 2 denote horizontal pipes connected to each other, and both pipes 1 and 2 are laid in trenches 3 excavated from the ground surface. The tubes 1 and 2 are joined to each other by inserting the insertion port 5 at the end of the other tube 2 into the receptacle 4 at the end of one tube 1. And the joint part is sealed by compressing the sealing material 6 between the inner peripheral surface of the receiving port 4 and the outer peripheral surface of the insertion port 5.

Reference numeral 7 denotes an inspection device for the position of the sealing material according to the present invention. The inspection device 7 has a holding member 8, which is an upper opening / closing center 9 forming one end in the radial direction.
And a pair of semicircular arms 10 configured to be openable and closable on the other end side, that is, on the lower side. The holding member 8 is suspended and supported by a bifurcated rope 11 that supports the upper part of each arm 10, so that the holding member 8 can be carried into the groove 3 from the ground surface with the lower end open as shown in FIG. Have been.

The holding member 8 has hooks 12 at a plurality of positions in the circumferential direction. When the holding member 8 is lowered to a joint portion between the socket 4 and the insertion port 5, the hooks 12 open the end of the socket 4. In the state of being positioned in the tube axis direction by engaging with the
Can be mounted on the outer periphery of the tubes 1 and 2 at the end face portion.

That is, as shown in FIG. 7, the holding member 8 is suspended from the cable body 11 in the open state and is carried into the groove 3, and when the opening / closing center portion 9 is seated on the top of the pipes 1, 2, Next, each arm 10 is closed and moved by its own weight around the opening / closing center portion 9, and the ends thereof are locked by the lock device 15, so that the arms 10 are mounted along the outer circumferences of the tubes 1 and 2 as shown in FIG. 6. It is configured to:

As shown in detail in FIG. 8, the lock device 15 has a pin 16 provided on one arm 10 and a pin 16 provided on the other arm 10 and rotatable around a fulcrum 22. And a hook 17 that can be engaged with the hook 16. The hook 17 is biased by a torsion coil spring 18 so as to engage the pin 16 when the holding member 8 is mounted on the tubes 1 and 2 and the arm 10 is closed. Reference numeral 19 denotes a stopper, which is a hook 17 biased by a torsion coil spring 18.
Is provided in a position where it can be properly engaged with the pin 16. The hook 17 is formed with a tapered surface 20 for contacting the pin 16 when the arm 10 is closed to open the hook 17 against the urging force of the spring 18. A cord 21 is connected to the hook 17, and the hook 17 associated with the pin 16 can be opened against the force of the spring 18 by pulling the cord from the surface of the ground.

At an appropriate position in the circumferential direction of the holding member 8, an inspection tool 24 for detecting the position of the sealing material is provided. Figure 1
As shown in FIG. 4, in the inspection tool 24, reference numeral 25 denotes a frame in the tube axis direction, one end of which is attached to the inner peripheral edge of the end surface of the arm 10 of the holding member 8. In frame 25,
A block 26 movable in the tube axis direction in the frame 25 is provided. An opening 27 is formed at a position inside the pipe 25 in the radial direction of the tube, and an inner end portion of the block 26 in the radial direction of the tube protrudes further inward of the opening 27 than the opening 27.

A base end of a thin plate made of Feller gauge 28 is attached to the projecting portion of the block 26. The Feller gauge 28 can be moved integrally with the block 26, and when the block 26 moves in the direction approaching the arm 10, the gap between the receiving port 4 and the insertion port 5 at the opening end of the receiving port 4.
It is configured to be inserted into the inside 23 so that the tip portion thereof contacts the sealing material 6.

One end of a flexible tube 29 is connected to the frame 25.
Is configured to extend from the frame 25 to a remote location, ie, the surface of the earth. A wire 30 is passed through the flexible tube 29 movably in the length direction. One end of the wire 30 is connected to the block in the frame, and the other end of the wire 30 projects from the other end of the flexible tube 29 at the remote position, that is, the ground surface, and has a push button on the projected portion. 31 is installed.

In such a configuration, when inspecting the position of the sealing material 6 after the joint of the pipe joint in the groove 3 is completed by inserting the insertion port 5 into the receiving port 4, as shown in FIG. Next, the holding member 8 of the inspection device 7 is hung by the cord 11 in an open state and lowered into the groove 3. Then, the opening / closing center portion 9 first sits on the tops of the tubes 1 and 2, and then each arm 10 closes by its own weight around the opening / closing center portion 9, and the ends thereof are locked by the lock device 15. The hook 12 is a tube 1
Of the outer peripheral projection 13 of the receiving port 4. As a result, as shown in FIGS. 5 and 6, the inspection device 7 is mounted on the outer circumference of the pipes 1 and 2 at the end face portion of the receptacle 4 while being positioned in the pipe axis direction.

At this time, an operator 32 can operate the cable body 21 and the other end of the wire 30 on the ground surface, and the operator 32 first presses the push button 31 at the other end of the wire 30. Then, the pushing force is transmitted to the block 26, and the block 26 is moved in the frame 25 in a direction approaching the arm 10. As a result, the Feller gauge 28 is inserted into the gap 23 between the receiving port 4 and the insertion port 5 at the opening end of the receiving port 4, and the tip end thereof contacts the sealing material 6.

From the amount of the other end of the wire 30 entering the flexible tube 29 when the tip of the Feller gauge 28 hits the sealing material 6, that is, from the other end of the flexible tube 29 to the push button 31. From the magnitude of the distance, the amount of the Feller gauge 28 entering the gap 29, that is, the position of the seal material 6 in the pipe joint is inspected.

After the same inspection has been performed on all of the plurality of inspection tools 24 in the circumferential direction, the hook 17 associated with the pin 16 is then pulled against the force of the spring 18 by pulling the cord 21 from the ground surface. To unlock the lock device 15. Then, both arms 10 are opened by lifting the rope 11, and the inspection device 7 is lifted to the ground surface apart from the position of the pipe joint.

[0020]

As described above, according to the present invention, the holding member attached to the pipe joint is configured such that the lower end of the other end can be opened and closed with the center on the upper open / close center forming one end in the radial direction. It has a pair of semicircular arms, is configured to be suspended in an open state, and to be closed by its own weight when the opening / closing center is seated on tops of the insertion opening and the reception opening. It is configured to have a lock device that can lock the ends of the arms that have been locked and that can be unlocked by remote control at the remote position, so that the Feller gauge of the inspection tool provided on the holding member can be used. By moving the ferrule with a wire that can be remotely operated, the Feller gauge can be inserted between the receptacle openings for inspection of the position of the sealing material. By observing the relative movement of the wire-like body, the amount of the Feller gauge that enters the gap, that is, the position of the sealing material, can be inspected, and in particular, the slip-on type pipe in the pipeline laid in the groove. The position of the seal material of the joint can be efficiently inspected by remote control from above the groove.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a use state of an inspection device for a position of a sealing material in a pipe joint according to an embodiment of the present invention.

FIG. 2 is a sectional view of the inspection tool in the inspection apparatus as viewed from the front.

FIG. 3 is a plan view of the inspection tool.

FIG. 4 is a cross-sectional view of the inspection tool.

5 is an overall front view showing a use state of the inspection device for the position of the sealing material in the pipe joint of FIG. 1;

FIG. 6 is an overall side view showing a use state of the inspection apparatus.

FIG. 7 is an overall side view for explaining a mounting operation of the inspection apparatus.

FIG. 8 is an enlarged detailed view of a lock device in the inspection device.

[Explanation of symbols]

 4 Receiving port 5 Insertion port 8 Holding member 24 Inspection tool 25 Frame 28 Feller gauge 29 Flexible tube 30 Wire

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01B 5/00-5/30

Claims (1)

(57) [Claims] 1. A holding member which is positioned and mounted in the tube axis direction on an end face portion of a receiving port into which an insertion hole is inserted, and an inspection tool for a sealing material position provided at an appropriate circumferential position on the holding member. This inspection tool has a frame, and a thin plate-shaped ferrule that is configured to be movable along the frame and that can be inserted from a gap between an insertion port and an insertion port on an end surface of the reception port until it hits a sealing material. A gauge, a tubular body extending from the frame to a remote location, a lengthwise movably passed through the tubular body, one end connected to the Feller gauge in the frame, and the other end. parts projects from the tubular body at said remote location, and a wire-shaped body to perform an insertion operation Feller gauge at the one end by the movement operation in the length direction of the other end portion, front Holding member, upper closing central portion formed at one end in the radial direction
A pair of lower ends of the other end
Having a semicircular arm, suspended in an open state,
When the opening / closing center is seated on the top of the
The holding member is configured to close the distal ends of the closed arms.
And remote control at the remote location.
An inspection device for a seal material position in a pipe joint, comprising a lock device capable of releasing a lock .