Pipe joint structure, seal member, assembled condition management method for pipe joint, and assembled condition management device for pipe joint

Patent metadata

Field	Value
Publication number	US-2016290540-A1
Application number	US-201415028539-A
Country	US
Kind code	A1
Filing date	Sep 29, 2014
Priority date	Oct 9, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

A pipe joint structure provided with: a heel section configured so that a spigot formed on the end section of a pipe is inserted via a seal member into a socket formed in the end section of another pipe and seal member is fitted to a recessed section formed on the inner circumferential section of the socket; and a valve section compressed between the inner circumferential surface of the socket and the outer circumferential surface of the spigot. Additionally, a marker member is provided to the heel section that is accommodated in the recessed section. The socket circumference section of the pipe joint structure is subjected to non-contact inspection by a marker detection device from the spigot-side pipe along the axial direction of the pipe and the quality of the joining state of the pipe joint structure is determined on the basis of whether the marker member is detected.

First claim

1 - 9 . (canceled)

10 . A pipe joint structure in which a spigot that is formed in an end section of one of pipes to be joined is inserted into a socket that is formed in an end section of another one of the pipes, and a seal member is provided between the socket and the spigot, wherein
the seal member includes a heel section fitted to a recessed section formed in an inner circumferential section of the socket; and a bulb section compressed between an inner circumferential surface of the socket and an outer circumferential surface of the spigot, the heel section that is accommodated in the recessed section being provided with a marker member that is detectable in a non-contact manner from a side of the spigot along a pipe axial direction.

11 . The pipe joint structure according to claim 10 , wherein the marker member includes a colored member having a color different from a color of the seal member.

12 . A seal member used for the pipe joint structure according to claim 10 , wherein the heel section that is fitted to the recessed section that is formed in the inner circumferential section of the socket is provided with a marker member with which whether the heel section is separated from the recessed section is able to be detected.

13 . An assembled condition management method for a pipe joint in which a spigot that is formed in an end section of one of pipes to be joined is inserted into a socket that is formed in an end section of another one of the pipes, and a seal member is provided between the socket and the spigot, the seal member including: a heel section that is fitted to a recessed section formed in an inner circumferential section of the socket; and a bulb section that is compressed between an inner circumferential surface of the socket and an outer circumferential surface of the spigot, the heel section that is accommodated in the recessed section being provided with a marker member, the method comprising:
checking the marker member in a non-contact manner from a side of the spigot along a pipe axial direction in a state where the pipe joint is assembled.

14 . An assembled condition management device for a pipe joint in which a spigot that is formed at an end of one pipe to be joined is inserted into a socket that is formed at an end of another pipe, and a seal member is provided between the socket and the spigot, the seal member including: a heel section that is fitted to a recessed section formed in an inner circumferential section of the socket; and a bulb section that is compressed between an inner circumferential surface of the socket and an outer circumferential surface of the spigot, the heel section accommodated in the recessed section being provided with a marker member,
for the seal member, the assembled condition management device comprising: a marker detection device that, in a state where the pipe joint is joined, detects the marker member from the spigot-side pipe along an axial direction of the pipe in a non-contact manner.

15 . The assembled condition management device for a pipe joint according to claim 14 , wherein
the marker member is a colored member having a color different from a color of the seal member, and the marker detection device includes an image capturing device with which whether there is the colored member is able to be determined with an image.

16 . The assembled condition management device for a pipe joint according to claim 15 , wherein
a spigot-side contact piece that comes into contact with a spigot side pipe, and the image capturing device is attached to the spigot-side contact piece.

17 . The assembled condition management device for a pipe joint according to claim 16 , wherein a plurality of the image capturing devices are attached to the spigot-side contact piece at a predetermined interval.

18 . The assembled condition management device for a pipe joint according to claim 16 , wherein the image capturing device is attached to the spigot-side contact piece via a movement mechanism that moves along the spigot-side outer circumferential surface.

19 . The assembled condition management device for a pipe joint according to claim 16 , wherein
the spigot-side contact piece is combined in the pipe joint assembling device that is remotely operated to automatically insert a spigot of one pipe into a socket of another pipe; the pipe joint joining device includes: a socket-side supporting member that comes into contact with a socket-side pipe; a spigot-side supporting member including: a spigot-side contact piece that comes into contact with a spigot side pipe; and a pivoting mechanism that pivots about a pivot axis, orthogonal to a pipe axis, so that the spigot-side contact piece is pressed and clamps the pipe; a guide shaft that is arranged in parallel with the pipe axis, and has one end fixed to the socket-side supporting member and another end to which the spigot-side supporting member is slidably connected; and a pulling operation member that performs an operation of making the pivoting mechanism pivot so that the pipe is clamped by the spigot-side contact piece pressed, is connected to the pivoting mechanism via the socket-side supporting member, and pulls the spigot in a clamped state toward a socket.

Assignees

• Kubota Kk
• Kubota Kk

Inventors

• Kishi Shozo
• Kagawa Takaaki
• Oda Keita
• Komaru Yuito

Classifications

• F16L21/08

  with additional locking means (F16L21/06 takes precedence; couplings of the quick-acting type F16L37/00) · CPC title

• F16L2201/10

  Indicators for correct coupling · CPC title

• F16L1/09

  for bringing two tubular members closer to each other · CPC title

• F16L2201/60

  Identification or marking · CPC title

• E03F3/06

  Methods of, or installations for, laying sewer pipes (making pipes in situ F16L1/038 {; laying conduits in association with the digging of a trench E02F5/10; laying pipes in general F16L1/00}) · CPC title