JP6568710B2 - Pipe inspection device - Google Patents

Description

  The present invention relates to a pipe joint inspection apparatus.

  Ductile cast iron pipes (hereinafter referred to as “iron pipes”) are widely used for water supply pipes and sewer pipes, and so-called push-on type pipe joint structures are adopted for these iron pipes. In addition to the push-on type, there is a pipe joint structure called a mechanical type. The mechanical type joint pushes the seal material between the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port into the inner side of the receiving port by a press ring arranged outside the receiving end surface, and the inner peripheral surface of the receiving port and the outer peripheral surface of the insertion port. It has a structure that ensures the surface pressure between the two.

  For example, in Patent Document 1, an insertion port formed at the end of the other tube is inserted into a receiving port formed at the end of one tube, and the inner peripheral surface of the receiving port and the outer periphery of the insertion port A rubber ring as a seal member is interposed between the surface and the surface, and a lock ring provided in the inner peripheral groove of the receiving port and a protrusion formed in the insertion port are engaged and secured. A pipe joint structure is disclosed.

  Further, in Patent Document 2, a protrusion is provided on at least one of the surface of the press ring or the receiving flange, and the seal material is inserted into the receiving port by tightening the press ring pushing bolt until the protrusion comes into contact with the other flange or the press ring. A structure that can be pushed between the peripheral surface and the outer peripheral surface of the insertion opening and that can maintain a constant gap between the press ring and the receiving flange surface is disclosed.

  In Patent Document 3, in order to determine whether or not the rubber ring is joined in an appropriate posture, the distance from the pipe end of the receiving port to the contact position with the rubber ring is measured using a thin plate gauge. It is disclosed that an inspection operation such as inserting a dedicated joint checker from the pipe end of the receiving port to the contact position with the rubber ring is performed.

JP 2010-174906 A JP 2010-286110 A JP 2012-123589 A

  As shown in FIG. 12, the steel pipe having such a push-on type joint structure has a receiving-side pipe in the vicinity of the receiving port 2A in which the insertion port of the other tube 3 is deposited in the receiving port 2A of the one tube 2. 2, a joining device 100 composed of a sling belt or a chain is wound, and the joining device 101 is wound around the tube 3 on the insertion side in the vicinity of the insertion port, and a lever hoist 102 is provided between the joining devices on both sides of the tubes 2 and 3. , 103 are attached and joined through a manual operation.

  After the joining operation, the mechanical measuring device such as the thin plate gauge and the joining checker described above is operated to check whether the rubber wheel is properly positioned, and the result is used as a part of the construction management information. Recorded on completed drawings.

  However, in order to check whether the rubber ring is properly positioned, measurements are taken at several points along the circumference of the joint of the pipe, and then temporarily recorded on a memo paper on the spot for later recording on a completed drawing. There is a problem that the measurement work and the recording work are very complicated. In particular, when measuring the part facing the bottom of the tube laying groove, it is necessary to bend the body and perform work, so a great deal of labor is required.

In addition, in order to ensure the sealing performance of the joint joint of the mechanical type, it is necessary to manage the spacing between the press ring and the receiving flange surface and the tightening torque of the press ring pushing bolt over several places in the circumferential direction of the joint. There is. Therefore, as described in Patent Document 2, a mechanical structure is sufficient in which a protrusion is provided on at least one of the pressing wheel or the receiving flange surface, and the pressing wheel pushing bolt is tightened until the protrusion comes into contact with the other flange or the pressing wheel. A type of joint is also in practical use. With this joint, torque management at the time of tightening the push-wheel pushing bolt can be omitted, so joint joint work can be performed efficiently.

  However, even with such a mechanical type joint, there still remains a need to inspect that the joint has been properly joined, that is, a visual inspection of the contact state between the protrusion and the other flange or push ring. In addition, there has been a problem that the operator is still forced to be in a cramped posture for visual inspection of joint joints near the bottom surface of the pipe laying groove.

  In addition to the above iron pipes, various types of pipes are generally arranged in a narrow place such as a pipe space, and various kinds of pipes that need to be inspected for construction state, damage state, etc. along the outer periphery of the pipe. The pipe inspection work had the same problem.

  An object of the present invention is to provide a pipe inspection apparatus that eliminates the need for the operator to perform a measurement operation in a cramped posture and that can acquire a plurality of information by a single measurement operation in view of the above-described problems. is there.

In order to achieve the above-mentioned object, the first characteristic configuration of the pipe joint inspection device according to the present invention is as described in claim 1 of the claims, and the other pipe is provided at the receiving end of one pipe. A sealing member interposed between the receiving port and the insertion port so as to be able to be pushed by a push ring, a tightening hole formed in the receiving port, and a tightening hole formed in the push ring. An inspection device for a pipe joint configured to tighten a member through a tightening member , comprising: an inspection unit for inspecting a joining state of the pipe joint, wherein the inspection unit is arranged in the axial direction of the pipe. On the surface crossing the tube axis, a recess is formed on one pair of side surfaces facing each other, and a concave portion that is a contact portion with the tube is formed to cover the tube joint portion from one direction. in and a test device which is disposed the pipe joint in the circumferential direction of the pipe joint to direct configured, before One of the recesses is provided on at least one of the flange portion on the receiving side or the push ring by the inspection tool in a state where the concave portion is positioned at the rising portion of the enlarged diameter portion formed at the tube end portion of the receiving side tube. The contact state between the protrusion and the other flange portion or the push wheel is inspected at a plurality of locations .

The insertion hole of the other tube is inserted into the receiving port of one tube, and a sealing member interposed between the receiving port and the insertion port so as to be able to be pushed by a push ring is provided with a fastening hole formed in the receiving port. A recess formed in the cover body is formed at the tube end portion of the tube on the receiving side with respect to the tube joint portion configured to tighten the tightening hole formed in the press ring via the tightening member. With the plurality of inspection tools arranged in the circumferential direction of the pipe joint in a posture facing the pipe joint on the surface intersecting the pipe axis in a state of being located at the rising portion of the enlarged diameter portion , The contact state between the protrusion provided on the flange portion and the press ring, or the contact state between the protrusion provided on the press ring and the flange portion on the receiving port is inspected at a plurality of locations along the circumferential direction of the pipe joint portion, and the contact The inspection information regarding the state becomes inspection information for determining whether or not the pipe is appropriately joined . And since an inspection tool is protected by a cover body, even if it contacts with an obstruction at the time of an inspection, an inspection tool will not be damaged.

In the second feature configuration, as described in claim 2, in addition to the first feature configuration described above, the inspection tool is at least 180 ° along the circumferential direction from the tube surface outside of the tube joint portion. It is in the point arrange | positioned so that the said contact state may be test | inspected in the range.

  It is possible to determine whether or not the joining state of the pipe joint portion is appropriate based on the contact state that exists in a range of 180 ° around the outer periphery of the pipe joint portion, that is, the tube axis.

The third feature structure, as described in the claim 3, in addition to the first or second characteristic feature of the above, the test tool is in the point that an imaging apparatus for capturing the contact state.

  Even if the pipe joint is not directly inspected visually or using a jig, it is determined whether or not the joining state is appropriate based on the image information of the pipe joint taken by the imaging device. Can be greatly simplified, and can be immediately confirmed on-site and at the same time recorded as an image record.

In the fourth feature configuration, as described in claim 4 , in addition to any one of the first to third feature configurations described above, the inspection section has an axis around the axis of the tube. The shaft is detachably connected to the shaft via a swing mechanism that can swing freely.

When the operator operates the pipe inspection device from the ground outside the pipe laying groove to position the inspection part at a position where the pipe joint can be properly inspected, the inspection part can If it is connected to the connecting portion, the inspection portion can be easily arranged at an appropriate position without finely adjusting the posture of the connecting portion.

  As described above, according to the present invention, it is possible to provide a pipe inspection apparatus that does not require a worker to perform a measurement operation in a cramped posture and that can acquire a plurality of information by a single measurement operation. Became.

(A) is a front view of a tube inspection device in a contracted state, (b) is a front view of the tube inspection device in an extended state, and (c) is a side view of the tube inspection device in an extended state. (A), (b) is explanatory drawing of the inspection state using a pipe inspection device (A) is explanatory drawing of the test | inspection state which used the pipe inspection apparatus with respect to the pipe joint part of a straight pipe, (b) is explanatory drawing of the BB sectional view of (a), (c) is (a). Explanatory drawing of the CC line cross section (A) is the principal part perspective view seen from the test | inspection part and connection part of the pipe | tube inspection apparatus for straight pipes, (b) is the principal part perspective view seen from the back side, (c) is the pipe for straight pipes Explanatory drawing of the connection part of an inspection part and a connection part of an inspection device (A) is a plan view of the communication unit of the tube inspection device, (b) is a front view of the communication unit, and (c) is a side view of the communication unit. (A) is the principal part perspective view seen from the front side of the pipe inspection apparatus for deformed pipes, (b) is the principal part perspective view seen from the back side. (A) is explanatory drawing of the test | inspection state which used the pipe inspection apparatus with respect to the pipe junction part of a deformed pipe, (b) is DD sectional view taken on the line of (a), (c) is an imaging device which is an inspection tool. Explanatory drawing of shooting state of pipe joint by (A) is explanatory drawing of the test | inspection state which used the pipe inspection apparatus with respect to the pipe junction part of a deformed pipe, (b) is the same top view, (c) is EE sectional view taken on the line of (b). (A) is sectional drawing of the sealing member used for pipe | tube joint of a straight pipe, (b) is explanatory drawing of the imaging | photography state of the appropriate pipe | tube junction part by the imaging device which is a test | inspection tool, (c) is improper by an imaging device. Explanatory drawing of the imaging state of a pipe joint part, (d) is explanatory drawing of the image of the appropriately joined pipe joint imaged with the imaging device, (e) is improperly joined imaged with the imaging device Illustration of the pipe joint image (A) is explanatory drawing of the imaging | photography state with respect to the pipe junction part of a deformed pipe by the imaging device which is a test | inspection tool, (b) is explanatory drawing of the image of the appropriate pipe junction part image | photographed with the imaging device, (c) is imaging. Explanatory drawing of improper pipe joint image taken with the device (A) is explanatory drawing of the label which shows pipe | tube information, (b), (c) is explanatory drawing of the junction structure of the pipe junction part of a deformed pipe Illustration of straight pipe joining work

  Below, the pipe inspection apparatus by this invention is demonstrated to the case where the pipe joint part of a waterworks pipe using an iron pipe is test | inspected as an example.

  As shown in FIG. 12, in a straight pipe having a so-called push-on type pipe joint structure, the insertion port of the other tube 3 is deposited in the receiving port 2A of one tube 2, and the receiving side in the vicinity of the receiving port 2A. A joining device 100 composed of a sling belt or a chain is wound around the tube 2 and a joining device 101 is wound around the tube 3 on the insertion side in the vicinity of the insertion port. A joining operation of mounting hoists 102 and 103 and winding them up manually is performed.

  FIG. 9 (a) shows a rubber seal member 4 used at the joint of the pipe. The seal member 4 is a valve that is press-contacted between a heel portion 4a fitted and fixed in a groove formed in the inner periphery of the receiving port, and a tube inner peripheral surface on the receiving port side and a tube outer peripheral surface on the insertion port side. A colored marker member 4c is provided on the rising surface of the heel portion 4a facing the tube end side on the receiving end side.

  9 (b) and 9 (c) show a cross section of the main part of the joint between the tubes 2 and 3. FIG. The insertion port 3A formed at the end of the other tube 3 is inserted into the receiving port 2A formed at the end of the one tube 2, and the inner peripheral surface of the receiving port 2A and the outer peripheral surface of the insertion port 3A The seal member 4 is interposed so as to be compressed, and the lock ring 5a and the protrusion 3a formed in the insertion port 3A are engaged and secured. In the figure, reference numeral 5b denotes a lock ring centering member.

  FIG. 9B shows an example in which the seal member 4 is properly mounted. The heel portion 4a is fitted into the seal member housing recess 2B formed in the inner periphery of the receiving port 2A, and is connected to the seal member housing recess 2B. The valve portion 4b is compressed between the sealing member compression convex portion 2C and the outer peripheral surface of the tube 3 on the insertion side.

  FIG. 9C shows an example in which the seal member 4 is improperly mounted, and shows a state in which the valve portion 4b is pulled inward by the tube 3 and the heel portion 4a is detached from the seal member housing recess 2B. Yes. In such an improper bonding state, the sealing function is impaired, so that it is necessary to perform the bonding operation again.

  11 (b) and 11 (c) show a pipe joint structure of a deformed pipe. After inserting the insertion port 3A of the other tube 3 into the receiving port 2A of the one tube 2, the seal member 4 is inserted into the gap between the insertion port 3A and the receiving port 2A using the pusher wheel 5.

  The tightening holes 2E formed in the flange portion 2D on the side of the receiving port 2A and the tightening holes 5A formed in a plurality of locations in the circumferential direction of the annular push ring 5 are combined with a T-head bolt 6A and a nut 6B which are tightening members. The push ring 5 is pulled to the flange portion 2D side by tightening via the, and the seal member 4 is pushed and inserted by the tip protrusion 5B of the push ring 5.

  A protrusion 5C facing the flange portion 2D is formed in the vicinity of the portion where the tightening hole 5A is formed in the pusher wheel 5. When the T-head bolt 5 is tightened until the protrusion 5C comes into contact with the end surface of the flange portion 2D. The seal member 4 is pushed and inserted into an appropriate position. Instead of the protrusion 5C formed on the push ring 5, a protrusion contacting the end face of the push ring 5 may be formed on the end face of the flange portion 2D.

  A plurality of tightening holes 5A are provided at equal positions along the circumferential direction of the press wheel 5, and a plurality of tightening holes 2E formed at the flange portion 2D are also provided at equal positions along the circumferential direction. The tightening holes 2E are provided in twice the number of the tightening holes 5A at half the pitch of the tightening holes 5A so that the circumferential position of the press wheel 5 can be easily adjusted.

  For example, when two tightening holes 5A formed in the press ring 5 are provided at a central angle of 180 °, four tightening holes 2E formed in the flange portion 2D are provided at a central angle of 90 °, and the press ring 5 is provided with a central angle of 120 ° pitch, six fastening holes 2E formed in the flange portion 2D are provided with a central angle of 60 ° pitch.

  When the T-head bolt 6A is tightened so that all the protrusions 5C formed in the vicinity of each tightening hole 5A are in contact with the end face of the flange portion 2D, the joining operation of the pipe is completed.

  1 (a), (b), and (c) show a pipe joint inspection device A having the above-described pipe joint structure. The inspection apparatus A includes an inspection unit 10 that inspects the joining state of the pipe joint, a communication unit 50 that transmits at least an inspection result by the inspection unit 10, and a connection unit 30 that connects the inspection unit 10 and the communication unit 50. And a battery 40.

  The connecting portion 30 is composed of two shafts 31 and 32 having a double structure of a cylindrical inner shaft and an outer shaft, and the inspection portion 10 and the communication portion 50 when the inner shaft advances or retreats with respect to the outer shaft. It is comprised so that the separation distance with can be adjusted.

  A screw-type fixing portion 35A that allows the inner shaft to advance or retreat is provided at the upper ends of the pair of outer shafts. By loosening the screw, the inner shaft advances or retracts with respect to the outer shaft, and the screw is tightened. As a result, the inner shaft is fixed. An expansion / contraction mechanism 35 that adjusts a separation distance between the inspection unit 10 and the communication unit 50 is configured by the fixing unit and the two inner shafts.

  1 (a), (b), (c) and FIGS. 5 (a), (b), (c), the communication unit 50 includes a control unit 56 housed in a housing 55, A transmission / reception antenna 60, a display unit 70, a GPS operation unit 52, and a two-dimensional code reader 54 are provided at the top of the housing 55. The GPS operation unit 52 and the two-dimensional code reader 54 are accommodated in accommodation units 51 and 53 attached to the left and right sides of the housing 55, respectively.

  The display unit 70 is a liquid crystal touch panel type display unit, and is attached to the casing 51 so as to be swingable around the horizontal axis P2 in order to adjust the angle so that the operator can easily operate depending on the posture at that time.

  The antenna 60 and the control unit 56 also function as a GPS receiver, and the position information of the inspection apparatus A is received based on the operation via the GPS operation unit 52, and the position information of the pipe joint is generated from the position information. It is comprised so that.

  A tube information label L indicating the type of tube is attached to the tube surface on the receiving side (see FIG. 11A), and the information recorded on the tube information label L is transferred to the two-dimensional code reader 54 described above. By reading the above, attribute information such as the type of tube is taken into the control unit. In this embodiment, QR code (registered trademark), which is two-dimensional code information, is written on the tube information label L, but the code information used to indicate the attribute information of the tube is not limited to QR code (registered trademark). Absent.

  The left and right accommodating parts 51 and 53 are formed in a size that can be grasped by a palm, and are configured such that an operator can carry the inspection apparatus A by grasping the outside of the accommodating parts 51 and 53. That is, the left and right accommodating portions 51 and 53 function as gripping portions for carrying the inspection apparatus A.

  The battery 40 is provided to supply power to the inspection unit 10 and / or the communication unit 50, and is attached to the inspection unit side 10 in the connecting unit 30. A heavy battery 40 for an operator who adjusts the posture of the tube inspection apparatus A while gripping the grip portion so that the inspection portion 10 is located inside the tube laying groove and the communication portion 50 is located above the inspection portion 10. Is arranged on the inspection unit 10 side so that the balance can be easily achieved by lowering the center of gravity.

  A swing mechanism 20 is provided on the upper portion of the inspection unit 10, and the inspection unit 10 is configured to be swingable about the horizontal axis P <b> 1 with respect to the shafts 31 and 32 that are the connecting portions 30.

  It is necessary that the operator operates the pipe inspection device A from the ground outside the pipe laying groove to position the inspection unit 10 at a position where the pipe joint can be properly inspected. In such a case, if the inspection unit 10 is connected to the connection unit 30 via the swing mechanism 20, the inspection unit 10 can be easily arranged at an appropriate position without finely adjusting the posture of the connection unit 30. Will be able to. Furthermore, when the pipe joint portion is inclined in the depth direction of the pipe laying groove, the inspection unit 10 is inclined to perform the inspection, but even in such a case, by having the swing mechanism 20, Since the GPS receiver can be arranged directly above the connecting part 30, it is possible to obtain correct position information of the connecting part.

  The rocking mechanism 20 incorporates a lock mechanism that fixes the rocking angle of the inspection unit 10. Since the rocking angle of the inspection portion 10 with respect to the shafts 31 and 32 is fixed by the lock mechanism, the posture can be maintained after the inspection portion 10 is positioned at a position where the pipe joint portion can be properly inspected. Sometimes accurate inspection information can be obtained in a stable posture.

  As the lock mechanism, a ratchet mechanism that permits rotation at a predetermined angular pitch in one direction around the horizontal axis P1 and prevents rotation in the opposite direction is preferably used. When the maximum angle is turned in one direction, the latched state by the ratchet mechanism is released. By pressing the inspection unit 10 against the pipe joint, the inspection unit 10 swings with respect to the shafts 31 and 32, and the posture is maintained.

  2 (a), (b), FIGS. 3 (a), (b), (c) and FIGS. 4 (a), (b), the inspection unit 10 is laid in the tube laying groove D. A metal cover body 11 that covers the pipe joint portion in proximity to the pipe joint portion from above, which is one direction of the pipe surface, and inspection tools 12 and 13 attached to the inside of the cover body 11. .

  By attaching the inspection tools 12 and 13 to the inside of the cover body 11, dirt and the like of the tube laying groove D can be prevented from adhering to the inspection tools 12 and 13 and the inspection can be performed appropriately. Therefore, as shown in FIGS. 2, 3, and 4, it is preferable that the cover body 11 covers the entire pipe joint portion, but is not limited to this, and the cover body 11 covers a part of the pipe joint portion. It may be. Further, the cover body 11 is not limited to metal, and a resin body may be used.

  Moreover, since the inspection tools 12 and 13 are attached to the cover body 11, an additional member for installing the inspection tools 12 and 13 becomes unnecessary, and the members can be simplified.

  The cover body 11 is formed in a substantially rectangular parallelepiped shape having a single upper surface and four side surfaces and having an open bottom portion, and an arch serving as a contact portion with the tube on a pair of side surfaces facing the axial direction of the tube. Shaped recesses 11A and 11B are formed.

  By positioning the cover body 11 from the bottom opening to the pipe joint and bringing the recesses 12A and 12B into contact with the pipe, the inspection section 10 is positioned relative to the pipe joint. In the pipe joint part of the push-on type pipe joint structure, the pipe diameter of the pipe on the inlet side is larger than the pipe diameter of the pipe on the inlet side at the pipe joint part, so the recess 11A is formed on the pipe surface on the inlet side. The lateral width of each concave portion 11A, 11B and the curvature of the top curve portion are adjusted so that the other concave portion 11B comes into contact with the tube surface on the receiving port side appropriately (FIGS. 4A and 4B). )reference).

  The inspection tool 12 is positioned in an inspectable state by bringing the cover body 11 close to the pipe joint and bringing the tops of the recesses 11A and 11B into contact with the pipe surface. The pipe joint is inspected.

  It is preferable that the concave portions 11A and 11B serving as the contact portions are formed in an arc shape so as to be along the tube surface, so that the center of the cylindrical tube and the center of the concave portion are easily aligned. It is not necessarily required to be formed, and it is sufficient that the recess is such that at least the relative positional relationship between the cover body 11 and the pipe joint is maintained constant. For example, it may be a triangular recess that contacts the tube surface at at least two points, or may be a polygonal recess that contacts the tube surface at two or more points.

  Since the cover body 11 is positioned so that the recesses 11A and 11B are along the pipe surface, the relative position of the inspection tool with respect to the recesses 11A and 11B is always determined, so that the inspection unit 10 and the pipe joint are always located. The pipe joint can be inspected in a state where the relative positional relationship is determined. In addition, as long as the cover body 11 is positioned along the tube surface, the contact portion may be configured by a member different from the cover body 11 without providing the contact portion on the cover body 11.

  If the non-slip portion with respect to the tube surface is provided at the contact portion of the recesses 11A and 11B with the tube surface, slippage when the tube surface and the cover body 11 are in contact with each other is avoided. , 13 does not cause misalignment during the inspection work, so that the inspection can be performed in a stable state. A rubber member or the like can be used as a material constituting the non-slip portion, and it is preferable to dispose the rubber member in the entire region of the recesses 11A and 11B or at least in contact with the tube.

  The inspection tool 12 is fixed to the inner wall side of the cover body 11 and includes three imaging devices oriented in a direction along the tube axis of the tube joint portion. The three imaging devices 12 are evenly arranged at a central angle of about 120 ° so as to photograph the periphery of the tube joint portion from the insertion side tube toward the receiving side tube (FIG. 3A). (See (b) and (c)).

  The state of the seal member interposed between the receiving port and the insertion port is an image by the imaging device 12 that takes an image of the periphery of the tube joint portion from the insertion side of the other tube toward the receiving side of the one tube. Acquired and the quality of the joined state can be determined from the image information.

  FIGS. 9D and 9E show images taken by the three imaging devices. About 1/3 of the tube end portion is photographed by each imaging device 12 in a front view, and an image of almost the entire circumference of the tube end portion is obtained by combining the images. It is more preferable that the angle of view is set so that the adjacent shooting ranges partially overlap, because the entire area can be reliably evaluated.

  FIG. 9D shows a state in which the seal member 4 is properly mounted, and the heel portion 4a is uniformly photographed on the inner periphery of the receiving port 2A. FIG. 9E shows a state in which the seal member 4 is improperly mounted, and an image corresponding to the marker member 4c as well as the heel portion 4a appears on the inner periphery of the receiving port 2A.

  Since the marker member 4c is made of a colored member different from the color of the seal member 4, if the pixel region indicating the colored member is recognized in the image taken by the imaging device 12, it is determined that the joining state is inappropriate. it can.

  Further, the cover body 11 is made of a light-shielding member, and three light sources that irradiate illumination light in the visual field direction of the imaging device 12 are provided inside the cover body 11. Accurate inspection information can be obtained in a stable environment in which stray light from the outside that is harmful at the time of photographing by the imaging device 12 is shielded by the cover body 11 and the tube joint portion is appropriately illuminated by each light source. In addition, since the imaging device 12 and the like are protected by the cover body 11, the risk of an electrical short circuit and failure even in rainy weather is reduced.

  Note that the number of the imaging devices 12 is not limited to three, and may be a plurality of three or more, or a moving mechanism that moves one imaging device along the outer periphery of the tube and captures an image. It may be provided.

  The inspection tools 12 and 13 do not have to be imaging devices, and may be configured by a single sensor or a plurality of sensors oriented in the direction along the tube axis. For example, it may be configured by an optical sensor that emits inspection light to the tube joint and detects reflected light from the tube joint. For example, when the reflected light from the marker member 4c is detected by the optical sensor using the seal member 4 in which the marker member 4c is configured by a light reflecting member and other than the marker member 4c is configured by a light non-reflecting member, the bonding is poor. You may comprise so that it can judge that it is.

  Image information that is inspection information obtained by the above-described inspection tool 12 is transmitted to the control unit 56 provided in the communication unit 50 and displayed on the display unit 70 as a photographic image. An operator who visually confirms the photographic image displayed on the display unit 70 is configured to be able to confirm whether or not the pipe joint unit is properly joined without any abnormality.

  If there is an abnormality in the pipe joint, the joining operation is performed again. If there is no abnormality, the pipe joint generated from the position information received by the GPS receiver according to the operation of the transmission button displayed on the display unit 70 is performed. The position information of the part, the attribute information such as the tube type read by the two-dimensional code reader 54, and the image information of the joint imaged by the inspection tool 12 are wirelessly transmitted to an external data management server.

  The size of the cover body 11 and the size of the recesses 11A and 11B shown in FIGS. 4A and 4B correspond to the tube diameter to be inspected. It is necessary to replace the inspection unit 10 with the size cover body 11.

  In addition, it is necessary to replace the inspection unit 10 with a deformed tube as shown in FIGS. 6 (a) and 6 (b). In addition, the test | inspection part 10 corresponding to a deformed pipe is comprised in the shape where the shape of a pair of recessed part 11A, 11B is equal. However, the shape of the concave portion is not necessarily the same depending on the combination of pipes to be joined, and may be an appropriate shape.

  Therefore, as shown in FIGS. 4A and 4C, the tube inspection device A is detachably connected between the inspection unit 10 and the connection unit 30 via an attachment / detachment mechanism. When a plurality of inspection units 10 are prepared so that they can be appropriately inspected according to pipe joints having different sizes or different shapes, the inspection unit 10 is detached from the connecting unit 30 via the attachment / detachment mechanism, and a new inspection is performed. By attaching the unit 10, the connecting unit 30 and the communication unit 50 can be shared.

  An attachment / detachment mechanism is configured by the support shaft 21 provided at the upper portion of the swing mechanism 20 and the cylindrical member 33 that connects the shafts 31 and 32. A female screw portion formed on the inner upper portion of the cylindrical member 33 and a male screw portion formed on the outer upper portion of the shafts 31 and 32 are screwed together to form the lower end portion of the cylindrical member 33 and the support shaft 21. The support shaft 21 and the shafts 31 and 32 are connected to each other by engaging with the engaging protrusions, and the shafts 31 and 32 are separated from the support shaft 21 by releasing the screwed state.

  Further, the signal line S connecting the inspection unit 10 and the communication unit 50 and the power supply line from the battery are housed in the shafts 31 and 32 which are the connection unit 30 so that signals can be exchanged between them. A connector CN for connecting the signal line S and the power supply line is provided at both ends of the support shaft 21 and the shafts 31 and 32, and the connector CN is removed when the shafts 31 and 32 are detached from the support shaft 21 by the above-described attachment / detachment mechanism. Is configured to be removed.

  If the signal line S that connects the inspection unit 10 and the communication unit is built in the connecting unit 30, the signal line S is protected by the connecting unit 30 even when it contacts an obstacle or the like during work. There is no fear of breakage, and the aesthetic appearance is not impaired.

  7 (a), (b), and (c) show deformed tubes that are bent and arranged in the tube laying grooves D in a plan view. The joint structure of the deformed pipe is the same as that described with reference to FIGS.

  The inspection unit 10 is approached from above toward the tube joint from above, and the tube with the inspection tool 13 fixed to the inner wall of the cover body 11 with the contact portion formed on the cover body 11 in contact with the tube surface. The joining state is configured to be inspectable. A plurality of inspection tools 13 are arranged in the circumferential direction of the pipe joint portion so as to face the pipe joint portion from the upper part of the cover body 11 on the surface intersecting the tube axis. As described above, the inspection tool 13 is constituted by an imaging device.

  FIGS. 8A, 8B, and 8C show an example in which a pipe joint portion is inspected such that one deformed pipe rises upward from the pipe laying groove D. FIG. The joint structure of the deformed pipe is the same as that described with reference to FIGS.

  Even in such a pipe joint portion, the joining state of the pipe joint portion in an appropriate posture can be obtained by swinging the inspection unit 10 via the swing mechanism 20 while maintaining the shafts 31 and 32 in a substantially vertical posture. Can be inspected.

  As shown in FIGS. 10A, 10 </ b> B, and 10 </ b> C, an image showing the contact state between the protrusion 5 </ b> C provided on the push wheel 5 and the flange portion 2 </ b> D on the receiving side is taken by the imaging device 13. The imaging device 13 is arranged so that the contact state is inspected in the range of at least 180 ° along the circumferential direction from the outer surface of the tube joint. Protrusions are formed on the half of the outer periphery of the pipe joint, that is, on the hatched portion provided on the periphery of the press wheel 5 shown in FIG. ) And the flange portion 2D, it is determined whether or not the joining state of the pipe joining portion is appropriate.

  In FIG. 10 (b), there are two protrusions 5C existing in the range of 180 ° around the tube axis (two hatched portions in the vicinity of the tightening hole 5A of the press wheel 5 shown in FIG. 10 (a)). Only the projection is formed) and the flange portion 2D is in good contact with each other, and therefore, it is determined that the joining state of the pipe joining portion is appropriate.

  In FIG. 10 (c), two projections 5C existing in the range of 180 ° centering on the tube axis (similarly, the hatched portion 2 in the vicinity of the tightening hole 5A of the press ring 5 shown in FIG. 10 (a)). Protrusion is formed only at the location.) And the flange 2D are in good contact with each other, but the other is not in contact, so the joint state of the pipe joint is judged to be inappropriate. .

  In FIG. 10 (d), there are three projections 5C existing in the range of 180 ° around the tube axis (two hatched portions in the vicinity of the fastening hole 5A of the press wheel 5 shown in FIG. 10 (a)). The three protrusions 5C can be confirmed by the inspection tool 13 between the pair of tightening holes 5A and on the outer peripheral side of the push wheel 5 and the flange portion 2D. It is judged that the contact state is good, and therefore the joining state of the pipe joint is appropriate. The contact state inspection only needs to confirm that at least two places are in contact state, but depending on the size of the protrusion, it is desirable that three or more contact states can be confirmed.

  Image information which is inspection information obtained by the above-described inspection tool 13 is transmitted to the control unit 56 provided in the communication unit 50 and displayed on the display unit 70 as a photographic image. An operator who visually confirms the photographic image displayed on the display unit 70 is configured to be able to confirm whether or not the pipe joint unit is properly joined without any abnormality.

  If there is an abnormality in the pipe joint, the joining operation is performed again. If there is no abnormality, the pipe joint generated from the position information received by the GPS receiver according to the operation of the transmission button displayed on the display unit 70 is performed. The position information of the part, the attribute information such as the tube type read by the two-dimensional code reader 54, and the image information of the joint imaged by the inspection tool 13 are wirelessly transmitted to an external data management server.

  In the present embodiment, an example has been described in which the contact state between the protrusion 5C provided on the push wheel 5 and the flange portion 2D on the receiving end is confirmed, but the protrusion is formed on the flange portion 2D on the receiving end, and the protrusion A configuration may be employed in which the opposing surfaces of the press wheel 5 are in contact with each other. In any case, the contact state of the protrusion is confirmed by the image by the imaging device 13.

  In the above-described embodiment, the example in which the pair of imaging devices 13 is arranged obliquely upward and leftward from the tube axis has been described. However, the number and arrangement of the imaging devices 13 are not limited to such an example. For example, the image pickup devices 13 are provided at three locations immediately above and below the left and right sides of the pipe joint so that the contact state between the projections 5C at the plurality of places and the flange 2D on the receiving side can be photographed from the periphery of the pipe joint. It may be configured.

  The inspection tool 13 is not limited to an imaging device that captures the contact state between the protrusion 5C and the flange portion 2D on the receiving side, and any sensor that can detect the contact state can be employed.

Hereinafter, another embodiment will be described.
In FIG. 3B, the example in which the imaging devices 12 and 13 having different viewing directions are provided inside the cover body 11 has been described, but only the imaging device 12 directed in the direction along the tube axis is provided. Also good.

  Moreover, you may comprise so that it may be confirmed whether the pipe joint part is joined linearly without inclining by the imaging device 13 which faces the outer surface of a pipe | tube. For example, whether a white line is painted on the intersection of the virtual plane perpendicular to the tube axis on the insertion side and the outer peripheral surface on the insertion side, and whether the tube end on the receiving side and the white line are in a parallel posture May be configured to be confirmed by an image. If they are parallel, it can be determined that the pipe joint is joined linearly without inclining. Further, by determining the inclination angle of both on the image, it is possible to determine whether or not the inclination degree of the pipe joint is within an allowable range. Further, by transmitting these pieces of information from the communication unit 50 to the outside, more detailed management can be performed.

  In the embodiment described above, when the pipe inspection apparatus A is moved or transported, it is necessary to grip and lift the left and right accommodating parts 51 and 53. However, the inspection part 10 is provided with detachable wheels so that the road surface is moved during the movement. You may comprise so that driving | running | working is possible. For example, the swinging shaft of the swinging unit 20 can be extended so that the wheel is mounted on the swinging shaft.

  In addition, a level that detects whether or not the swing axis of the swing unit 20 is in a horizontal posture is provided, and when the swing shaft is detected to be in a horizontal posture by the level, the imaging devices 12 and 13 And a protection mechanism for prohibiting the photographing operation by the imaging devices 12 and 13 when the swinging shaft is in an inclined posture.

  Further, in the above-described embodiment, the push-on type and the mechanical type joint using the push wheel have been described as the pipe joint structure, but the present invention is not limited thereto, and the flange joint in which the flanges are joined to each other It may be.

  Further, in the above-described embodiment, the pipe inspection apparatus has been described using the configuration having only the inspection function of the pipe joint portion. However, the present invention is not limited to this, and the inspection apparatus has a joint function of the pipe joint. Also good.

  The tube inspection apparatus described above is only one specific example of the present invention, and the scope of the present invention is not limited by the description. Specific shapes, sizes, materials, etc. of each part of the tube inspection apparatus are not limited to the present invention. The design can be changed as appropriate within the range in which the above effects are achieved.

2,3: Tube 10: Inspection unit 11: Cover body 11A, 11B: Concave portion 12, 13: Inspection tool (imaging device)
20: Swing part 30: Connection part 40: Battery 50: Communication part A: Tube inspection device

Claims (4)

The insertion hole of the other tube is inserted into the receiving port of one tube, and a sealing member interposed between the receiving port and the insertion port so as to be able to be pushed by a push ring is provided with a fastening hole formed in the receiving port. An inspection device for a pipe joint configured to tighten a tightening hole formed in the press ring via a tightening member ,
An inspection section for inspecting the bonding state of the pipe joint section;
The inspection unit includes a cover body that covers the pipe joint part from one direction, and a cover body that covers the pipe joint part from one direction, and a pair of side surfaces facing along the axial direction of the pipe. And an inspection tool arranged in the circumferential direction of the pipe joint so as to face the pipe joint on a surface intersecting with the pipe axis ,
Provided in at least one of the flange portion on the receiving side or the push ring by the inspection tool in a state where one of the concave portions is located at the rising position of the enlarged diameter portion formed at the tube end portion of the pipe on the receiving side. An apparatus for inspecting a pipe joint configured to inspect a contact state between the projected protrusion and the other flange portion or the push wheel at a plurality of locations . The inspection instrument inspection apparatus of the pipe joint according to claim 1, wherein the contact state from the pipe surface outside the range of at least 180 ° along the circumferential direction of the pipe joint portion is disposed so as to be inspected. The inspection instrument inspection apparatus of the pipe joint according to claim 1 or 2, wherein the imaging device that photographs the contact state. The pipe joint according to any one of claims 1 to 3, wherein the inspection section is detachably connected to a shaft via a swinging mechanism that can swing around an axis that intersects the axis of the pipe. Inspection equipment.