JP2017067455A - Pipe inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe inspection device which does not require an operator to perform measuring operation in a cramped posture and further, enables measurement in plural locations at one time of measuring operation.SOLUTION: A pipe inspection device 10, which is provided with a body casing 11, arm members 20 that are accommodated in the body casing and can be arranged along at least a part of an outer periphery of a pipe 3, and inspection instruments 40 each attached to the arm member 20, includes: swing shafts 23 each of which pivotally supports the arm member 20 to the body casing 11 swingably, between an inspection posture of locating the arm member 20 along the outer periphery of the pipe 3 and a non-inspection posture of separating the arm member from the outer periphery of the pipe; elastic members 25 each of which biases the arm member 20 toward the non-inspection posture; and swing biasing members 20 each of which is pressed by the outer peripheral part of the pipe 3 and causes the arm member 20 to swing against the biasing force of the elastic member 25 toward the inspection posture.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a pipe inspection apparatus including a main body casing, an arm member that is accommodated in the main body casing and can be arranged along the outer periphery of the pipe, and an inspection device attached to the arm member.

  Ductile cast iron pipes (hereinafter also simply 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.

  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, 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 determined using a thin gauge. It is disclosed that inspection work such as measurement or insertion of 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 2012-123589 A

  As shown in FIG. 1, the iron tube of such a push-on type joint structure is such that the insertion port of the other tube 3 is deposited in the receiving port 2A of one tube 2 and the tube on the receiving side in the vicinity of the receiving port 2A. 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 a plurality of locations along the periphery of the joint of the pipe, and temporarily recorded on a memo paper on the spot for recording on a completed drawing or the like later. There is a problem that it is necessary to record, and 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 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 inspection device according to the present invention includes a main body casing and an outer periphery of the pipe accommodated in the main body casing as described in claim 1 of the claims. A pipe inspection apparatus comprising: an arm member that can be arranged along at least a part of the pipe; and an inspection device attached to the arm member, wherein the arm member is in an inspection posture and a pipe along an outer periphery of the pipe. An oscillating shaft that pivotally supports the body casing so as to be able to oscillate between the arm member and a non-inspection posture that is separated from the outer periphery of the elastic member, and an elastic member that urges the arm member to be in a non-inspection posture. And a swinging biasing member that swings the arm member to the inspection posture against the biasing force of the elastic member by being pressed at the outer peripheral portion of the tube.

  As the arm member swings around the swing axis, the posture of the arm member changes between an inspection posture along the outer periphery of the tube and a non-inspection posture separated from the outer periphery of the tube. The arm member that is biased so as to be in the non-inspection posture by the elastic member is oscillated and oscillated around the oscillation axis by the oscillation urging member that is pressed on the outer peripheral portion of the tube, so that the posture is brought into the inspection posture. In this state, the tube can be inspected by the inspection device. That is, the posture of the arm member is changed to the inspection posture along the outer periphery of the tube by moving the tube inspection device so as to be close to the outer periphery of the tube. By using such a tube inspection device, for example, an operator can be released from the operation of bending the body and measuring the tube in a narrow region.

  In the second characteristic configuration, as described in claim 2, in addition to the first characteristic configuration described above, the swing biasing member is configured by the arm member, and one end side of the arm member is a pipe. By being pressed at the outer periphery, the other end side of the arm member is close to the tube and changes its posture to the inspection posture.

  When the tube inspection device is relatively moved so as to approach the outer periphery of the tube, one end of the arm member is pressed by the outer periphery of the tube, and the other end of the arm member is brought into contact with the tube by the moment around the swing axis generated at that time. The posture changes to the inspection posture in close proximity. Since the swing biasing member is configured by the arm member, it is not necessary to configure the swing biasing member using a separate component for swinging the arm member. Therefore, the cost can be reduced by reducing the number of parts and simplifying the assembly process.

  In the third feature configuration, as described in claim 3, in addition to the first or second feature configuration described above, a recess that allows a tube to enter is formed on a pair of opposed surfaces of the main body casing. An attachment for adjusting the size of each concave portion corresponding to the nominal diameter of the pipe is attached to each of the opposing surfaces, and the pivot shaft is attached to one of the attachments.

  When the tube inspection device is relatively moved so as to be close to the outer periphery of the tube, the outer periphery of the tube enters a recess formed in a pair of opposing surfaces of the main casing, and the swinging biasing member is moved by the outer periphery of the tube. When pressed, the arm member changes its posture to an inspection posture along the outer periphery of the tube. By adjusting the attachment position of the attachment, which is a part of the main body casing, without preparing the main body casing corresponding to each size when the size of the recess needs to be adjusted according to the nominal diameter of the pipe The main body casing can be generalized. And when it is necessary to adjust the relative position between the arm member and the outer periphery of the tube when the inspection posture is shifted, in other words, the relative position between the inspection device and the outer periphery of the tube is adjusted according to the nominal diameter of the tube. Even when it is necessary to adjust, the relative position is automatically adjusted by adjusting the attachment position of the attachment to which the swing shaft is attached to the main body casing.

  The fourth characteristic configuration is that, as described in the fourth aspect, in addition to the third characteristic configuration described above, the elastic member is attached to the attachment.

  Since the elastic member is attached to the attachment, even when the attachment position of the attachment to the main body casing is changed according to the nominal diameter of the tube, the urging force of the elastic member that urges the arm member to the non-inspection posture varies. Can maintain a stable biasing force.

  In the fifth feature configuration, as described in claim 5, in addition to the third or fourth feature configuration described above, the arm member is disposed so as to sandwich the tube, and the attachment includes the tube. The arm member is attached to each of the divided attachments.

  When the posture of the pair of arm members is changed to the inspection posture, the pipe is held by the pair of arm members, and the inspection equipment is inspected simultaneously from a plurality of directions along the outer periphery of the pipe. When it is necessary to adjust the size of the recess in accordance with the nominal diameter of the pipe, the relative position between the arm member and the outer periphery of the pipe, in other words, the inspection equipment and the pipe is adjusted by individually adjusting the mounting position of the split attachment. The relative position with respect to the outer periphery of the tube can be adjusted appropriately according to the nominal diameter of the tube.

  In the sixth feature configuration, in addition to any one of the first to fifth feature configurations described above, the swing biasing member is configured by the arm member, and the arm The other end side of the arm member is close to the pipe and changes its posture to the inspection posture by being pressed at one end side of the member by the outer peripheral portion of the pipe.

  When the tube inspection device is relatively moved so as to approach the outer periphery of the tube, one end of the arm member is pressed by the outer periphery of the tube, and the other end of the arm member is brought into contact with the tube by the moment around the swing axis generated at that time. The posture changes to the inspection posture in close proximity. Even when the swing angle of the arm member is insufficient due to the nominal diameter of the tube, the necessary swing angle can be secured by interposing the spacer member. Conversely, if the necessary swing angle can be ensured without the spacer member, the spacer member may be detached. Thus, since the spacer member is detachably arranged, the arm member can be shared even with pipes having different nominal diameters.

  In the seventh feature configuration, as described in claim 7, in addition to any of the first to sixth feature configurations described above, the relative distance between the outer peripheral surface of the tube on the insertion side and the inspection device And the positioning member which prescribes | regulates the relative distance of the pipe end surface by the side of an opening and the said test | inspection apparatus is further provided.

  When the main casing is approached from the outer periphery of the pipe, the positioning member comes into contact with the outer peripheral face of the tube on the insertion side, and the relative distance between the outer peripheral face of the pipe and the inspection device is determined, and the main casing is received in this state. When moved to the mouth side, the positioning member comes into contact with the tube end surface on the receiving side, and the relative distance between the tube end surface and the inspection device is determined.

  In the eighth feature configuration, as described in claim 8, in addition to any of the first to seventh feature configurations described above, a plurality of the inspection devices are dispersed in the circumferential direction of the arm member. It is in the point where it is arranged.

  Multiple locations can be inspected simultaneously along the circumference of the tube.

  The ninth characteristic configuration is that, in addition to the eighth characteristic configuration described above, the inspection device is configured by an imaging device, as described in the ninth aspect.

  Whether or not the state of the tube is in an appropriate state can be confirmed based on an image taken by an imaging device serving as an inspection device.

  In the tenth feature configuration, as described in claim 10, in addition to any of the first to ninth feature configurations described above, the tube is inserted into the receiving port of one tube. The pipes are joined together by inserting a mouth, and the joining state of the pipes is inspected by the inspection device.

  It becomes possible to confirm based on the inspection device whether or not the joined state in which the tube on the insertion side is properly inserted into the receiving port is an appropriate state. For example, when an imaging device is used as an inspection device in a configuration in which the insertion side tube and the receiving side tube are joined via a seal member, a photographed image is used to determine whether the seal member is in an appropriate state. Can be easily discriminated on the basis of the above, and can be stored as a record to prove whether or not the construction has been properly performed.

  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.

Photograph explaining the pipe joining work (A) is sectional drawing of a sealing member, (b) is principal part sectional drawing of the junction part which shows an appropriate joining state, (c) is principal part sectional drawing of the junction part which shows an improper joining state, (d). Is an explanatory view of an inspection image by a tube inspection device showing an appropriate bonding state, (e) is an explanatory view of an inspection image by a tube inspection device showing an inappropriate bonding state (A) is a side view of a pipe joint, (b) is an explanatory view of a pipe inspection device attached to the pipe joint. (A) is a perspective view showing the plane, front, right side of the tube inspection device, (b) is a perspective view showing the same plane, back, right side. (A) is a front view of the pipe inspection device, (b) is a bottom view thereof, and (c) is a cross-sectional view taken along line AA in FIG. 5 (a). (A) is a rear view of the tube inspection device, (b) is a cross-sectional view taken along line BB in FIG. 5 (a). (A) is a front view of a tube inspection apparatus whose position is adjusted by an attachment, and (b) is a rear view thereof. (A) to (d) is an explanatory view of an arm member whose posture is changed from a non-inspection posture to an inspection posture. (A), (b) is explanatory drawing of a positioning member (A), (b) is explanatory drawing of a spacer member

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

  As shown in FIG. 1, when joining an iron pipe, the insertion opening of the other pipe 3 is deposited in the receiving opening 2A of one pipe 2, and a sling belt or the like is connected to the receiving pipe 2 near the receiving opening 2A. The joint device 100 composed of a chain is wound, the joint device 101 is also wound around the tube 3 on the insertion side in the vicinity of the insertion port, and lever hoists 102 and 103 are mounted between the connection devices on both sides of the tubes 2 and 3, respectively. Then, the joining work of winding up manually is performed.

  FIG. 2 (a) shows a rubber seal member 4 used at the joint of the pipe. The seal member 4 includes a heel portion 4a that is fitted and fixed in a groove formed on the inner periphery of the receiving port, and a valve portion 4b that is press-contacted between the tube inner wall on the receiving port side and the tube outer wall on the insertion port side. The colored marker member 4c is provided on the rising surface of the heel portion 4a that faces the pipe end side on the receiving side.

  2 (b) and 2 (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, and reference numeral 24 denotes an imaging device as an inspection device.

  FIG. 2B 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. 2 (c) shows an example in which the seal member 4 is improperly mounted, and shows a state in which the valve portion 4b is pulled back by the pipe 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.

  FIG. 3A shows a joint 6 in which the insertion port of the tube 3 is inserted into the receiving port 2 </ b> A of the tube 2. In the figure, reference numerals 3C and 3D are annular white lines painted on the tube 3 on the insertion side for visually recognizing the insertion amount of the insertion port with respect to the reception port, and at the connection side 6 at the reception side. It is also a marker for inspecting the degree of inclination of the axis of the tube 2 and the axis of the tube 3.

  FIG. 3B shows a tube inspection device 10 attached to the joint 6. The tube inspection device 6 includes a main body casing 11, an arm member 20, a positioning member 30, inspection devices 40 and 50, etc. accommodated in the main body casing 11.

  The pipe inspection apparatus 10 is an apparatus for inspecting whether or not the mounting state of the seal member 4 (see FIG. 2A) of the joint portion 6 is appropriate, and the pipe 2 from above the joint portion 6 of the pipes 2 and 3. , 3 so as to cover the outer periphery.

  As shown in FIGS. 4A and 4B, the tube inspection device 10 includes a main casing 11 having a substantially rectangular parallelepiped shape. The main casing 11 includes a front wall 11A and a rear wall 11B, which are a pair of opposing walls formed with recesses 12A and 12B that allow the pipes 2 and 3 to enter the casing 11, respectively, left and right side walls 11C, and a ceiling. A plate 11D and a pair of bottom plates 11E are provided.

  The top plate 11D is provided with electrical signal line connectors CN1 and CN2 for connecting the inspection devices 40 and 50 and external devices, a connector cover CV for the connector CN1, and a supporting collar member (not shown). A mounting bracket 15 is attached. The connector CN2 is a spare connector used when adding the inspection devices 40 and 50 (see FIG. 3).

  In the casing 11, the front wall 11 </ b> A and the rear wall 11 </ b> B are formed with arch-shaped recesses 12 </ b> A and 12 </ b> B along the outer periphery of the pipe corresponding to the first nominal diameter (in this embodiment, nominal diameter 100). The recess 12A formed on the front wall 11A is formed in a shape and size along the outer periphery of the tube 3 on the insertion side (see FIG. 3A), and the recess 12B formed on the rear wall 11B is on the receiving side. The tube 2 (see FIG. 3A) is formed in a shape and size along the outer periphery of the receiving portion 2A. Further, the gap between the pair of bottom plates 11E is set to be slightly larger than the outer diameter of the tube 3 on the insertion side (see FIG. 3A).

  Further, as shown in FIGS. 4A and 4B and FIGS. 7A and 7B, the front wall 11A and the rear wall 11B have a second nominal diameter smaller than the first nominal diameter. In the embodiment, the attachments 13A, 13B, 13C, 14A, 14B, and 14C having shapes and sizes along the outer periphery of the pipe corresponding to the nominal diameter 75) are screwed. An aluminum casing 11 is configured including the attachments 13A, 13B, 13C, 14A, 14B, and 14C.

  When measuring a pipe corresponding to the first nominal diameter, the attachments 13A, 13B, 13C, 14A, 14B, and 14C are attached to the positions shown in FIGS. 4 (a) and 4 (b). That is, the recesses 12A and 12B formed on the front wall 11A and the rear wall 11B are attached at positions retracted from the recesses 12A and 12B so as to face the pipe.

  When measuring a pipe corresponding to the second nominal diameter, the attachments 13A, 13B, 13C, 14A, 14B, and 14C are attached at the positions shown in FIGS. That is, the position which advanced from recessed part 12A, 12B so that the inner edge of attachment 13A, 13B, 13C, 14A, 14B, 14C may protrude inside rather than the inner edge of recessed part 12A, 12B formed in 11 A of front walls, and the rear wall 11B Attached to.

  A screw hole H1 shown in the rear wall 11B of FIG. 7A is a hole for attaching the attachments 14A, 14B, and 14C to the positions shown in FIG. 4A corresponding to the first nominal diameter pipe. Similar screw holes are formed in the front wall 11A.

  As shown in FIGS. 5 (a), (b), (c), FIGS. 6 (a), (b) and FIGS. 7 (a), (b), each of the attachments 13A, 13B on the front wall 11A side is provided. The arm member 20 is swingably attached via a swing shaft 23 along at least a part of the outer periphery of the tube.

  A spring support portion provided at the lower part of the arm member 20 is provided with a swing shaft 23 slightly above the center in the vertical direction of the pair of arm members 20 so that the lower portion of each arm member 20 extends around the swing shaft 23. A tension spring, which is an elastic member 25, is bridged between the spring 21 and the spring support 22 provided in the attachments 13A and 13B (see FIG. 5C).

  The arm member 20 is configured by welding square aluminum members having a rectangular cross section so as to have a C shape when viewed from the front, and an imaging device (camera) serving as the inspection device 40 is accommodated on both ends.

  As shown in FIG. 8A, normally, a state in which the lower ends of the pair of arm members 20 are left and right opened by the tensile force of the elastic member 25, that is, the arm members 20 from the outer periphery of the tube 3. Maintained a separate non-inspection posture.

  As shown in FIG. 8 (b), when the main casing 11 is pressed toward the outer periphery of the tube 3, the tube 3 comes into contact with the outer periphery of the tube 3 and the lower end of the arm member 20 is slightly pushed left and right. It enters between the pair of arm members 20.

  As shown in FIG. 8C, when the main casing 11 is further pressed against the pipe 3, the outer peripheral portion of the pipe 3 comes into contact with the lower wall on the upper end side of the arm member 20, and the upper end side of the arm member 20 is pushed upward. Such a reaction force acts, and torque is generated in the direction of embedding the tube 3 around the swing shaft 23.

  As a result, as shown in FIG. 8C, the arm member 20 shifts to the inspection posture along the outer periphery of the tube 3. In this state, the four inspection devices (imaging devices) 40 are arranged at intervals of 90 ° in the circumferential direction with respect to the axis of the tube 30.

  FIGS. 2D and 2E show images of the joint portion 6 of the tube photographed by the four inspection devices (imaging devices) 4 in this way.

  Thereafter, when the main body casing 11 is separated from the tube 3, the arm member 20 returns to the non-inspecting posture shown in FIG. 8A by the restoring force of the tension spring which is the elastic member 25.

  6 (a) and 6 (b), the relative distance between the outer peripheral surface of the tube on the side of the insertion port (see FIG. 3 (a)) and the inspection device 40 and the receiving port (see FIG. 3 (a)). A positioning member 30 that defines the relative distance between the tube end surface 2D on the second side and the inspection device 40 is further provided.

  The positioning member 30 is constituted by a prismatic member having a rectangular cross section, and is fixed to the upper portion of the recess 12B of the main body casing 11B with screws via a bracket 35. Positioning action is exhibited on the lower surface of the prism member and the side surface on the main body casing 11B side.

  As shown in FIG. 9A, when the main body casing 11 is approached from the upper outer periphery of the pipes 2 and 3 constituting the joint portion 6, the lower end surface of the positioning member 30 is the outer periphery of the pipe on the insertion port 3 side. The relative distance between the outer peripheral surface of the tube 3 and the inspection device 40 is determined by contacting the surface.

  As shown in FIG. 9B, when the main body casing 11 is moved to the receiving port 3 side in this state, the side surface of the positioning member 30 on the main body casing 11B side comes into contact with the tube end surface 3D on the receiving port 3 side. Thus, the relative distance between the tube end surface 3D and the inspection device 40 is determined.

  When the lower end surface of the positioning member 30 abuts on the outer peripheral surface of the tube on the insertion port 3 side, the further entry of the tube into the main body casing 11 is restricted. At this time, the arm member 20 is inspected along the outer periphery of the tube 3. The position of the lower end surface of the positioning member 30 with respect to the arm member 20 is set so as to shift to the posture.

  As shown in FIG. 7B and FIG. 8A, the other end side, that is, the lower end side of the arm member 20 comes close to the pipe by being pressed by the outer peripheral portion of the pipe to one end side, that is, the upper end side of the arm member 20. A spacer member 27 that changes the posture to the inspection posture is detachably disposed.

  As described above, when the tube inspection apparatus 10 is relatively moved so as to approach the outer periphery of the tube, one end of the arm member 20 is pressed by the outer periphery of the tube, and the moment around the swing shaft 23 generated at that time is The other end side of the arm member 20 approaches the tube and changes its posture to the inspection posture. At this time, depending on the nominal diameter of the tube, there may be a case where the swing angle of the arm member 20 is insufficient. For example, there is a case where the swing angle of the arm member 20 is insufficient at the second nominal diameter.

  Even in such a case, a necessary swing angle can be secured by interposing the spacer member 27 as a part of the arm member 20. Conversely, when the required swing angle can be ensured without the spacer member 27, that is, when the first nominal diameter is satisfied, the spacer member 27 may be detached from the arm member 20. Thus, since the spacer member 27 is detachably disposed, the arm member can be shared even with pipes having different nominal diameters.

  As shown in FIGS. 10A and 10B, when the spacer member 27 is detached from the arm member 20, the screws attaching the spacer member 27 to the left and right arm members 20 are removed, and the right spacer is removed. The member 27B is rotated in the direction of the arrow and is fixed to the same screw hole on the distal end side of the left arm member 20 with the same screw, and the left spacer member 27A is rotated in the direction of the arrow to move the distal end side of the right arm member 20 The same screw hole is fixed with the same screw. Therefore, even when the spacer 27 is unnecessary, it can be attached to the arm member 20, so that the spacer 27 is not lost.

  As shown in FIGS. 5B and 5C, the main body casing 11 is provided with a second inspection device 50 composed of a pair of imaging devices on the left and right with the positioning member 30 interposed therebetween. The inspection device 50 includes an annular white line 3C, 3D (see FIG. 3A) painted on the insertion-side tube 3 and the receiving port 3 based on an image obtained by photographing the joint portion 6 obliquely from the left and right. It is installed in order to obtain the inclination angle with the side end face 3D and to evaluate the linearity of the joint 6 from the inclination angle.

  As described above, the tube inspection apparatus 10 is pivotally supported on the main body casing 11 so that the arm member can swing between the inspection posture along which the arm member 20 extends along the outer periphery of the tube and the non-inspection posture separated from the outer periphery of the tube. And the elastic member 25 that urges the arm member 20 to be in the non-inspecting posture, and the arm member is pressed against the urging force of the elastic member 25 by being pressed by the outer peripheral portion of the tube. And a swinging biasing member 20 swinging in the inspection posture.

  The swing urging member is constituted by the arm member 20, and the one end side of the arm member 20 is pressed by the outer peripheral portion of the tube so that the other end side of the arm member 20 is close to the tube and changes its posture to the inspection posture. Therefore, it is not necessary to configure the swing urging member using a separate part for swinging the arm member 20, and the cost is reduced by reducing the number of parts and simplifying the assembly process. .

  In the present invention, the arm member 20 of the tube inspection device 10 being along the outer periphery of the tube may be in a state where a part of the member 20 is in contact with the outer periphery of the tube, or close without contacting. It is a concept that includes any state.

  Moreover, in this invention, the arm member 20 may be comprised with the single member, may have a spacer in part, and may use it integrally combining several members. .

  In the above embodiment, when the main body casing 11 is pressed toward the outer periphery of the tube 3, the tube 3 comes into contact with the outer periphery of the tube 3 and the lower end of the arm member 20 is slightly pushed left and right. Although the case of entering between the arm members 20 has been described, the present invention is not limited to this, and the tube 3 may enter between the arm members 20 without contacting the outer periphery of the tube 3 and the lower end of the arm member 20. good.

  The swing urging member can also be configured using a member separate from the arm member 20. For example, a link member may be separately provided that presses the main body casing 11 against the pipe and abuts the outer periphery of the pipe and receives the reaction force to push up the upper end side of the arm member 20 upward.

  Further, recesses 12A and 12B that allow the tube to enter are formed on a pair of opposed surfaces 11A and 11B of the main casing 11, and an attachment 13A that adjusts the sizes of the recesses 12A and 12B corresponding to the nominal diameter of the tube 3 is formed. , 13B, 13C, 14A, 14B, and 14C are attached to the opposing surfaces 11A and 11B, respectively, and a swing shaft is attached to one of the attachments 13A and 13B. When it is necessary to adjust, the main body casing can be generalized by adjusting the attachment position of the attachment which is a part of the main body casing without preparing the main body casing corresponding to each size.

  And when it is necessary to adjust the relative position of the arm member 20 and the outer peripheral part of the pipe when shifting to the inspection posture, in other words, the relative position of the inspection device 40 and the outer peripheral part of the pipe depends on the nominal diameter of the pipe. Even if it is necessary to adjust the position, the relative position is automatically adjusted by adjusting the attachment position of the attachments 13A and 13B to which the swing shaft 23 is attached to the main body casing 11A.

  Further, since the elastic member 25 is attached to the attachments 13A and 13B, the arm member 20 is not inspected even when the attachment position of the attachment attachments 13A and 13B with respect to the main body casing 11A is changed according to the nominal diameter of the pipe. The urging force of the elastic member 25 urging the urging force is not changed, and a stable urging force can be maintained.

  Since the arm member 20 is disposed so as to sandwich the tube, and one of the attachments 13A and 13B is divided with the tube interposed therebetween, and the arm member is attached to each of the divided attachments, the concave portion is formed according to the nominal diameter of the tube. When it is necessary to adjust the sizes of 12A and 12B, the inspection device 40 can be arranged at an appropriate position with respect to the pipe by individually adjusting the attachment position of the attachment.

  Since a plurality of inspection devices 40 are arranged in a distributed manner in the circumferential direction of the arm member 20, a plurality of inspection devices can be simultaneously inspected along the outer periphery of the pipe.

  Since the inspection device 40 is composed of an imaging device, as shown in FIGS. 2D and 2E, the quality of the bonded state of the bonded portion is determined based on the captured images (the seal member is in an appropriate state). Determination of whether or not) and recording with electronic data becomes possible.

  The inspection device 40 is not limited to the imaging device, and may be appropriately selected according to the inspection object. For example, when inspecting pipe corrosion or the like in a non-contact manner, an ultrasonic flaw detector may be installed as an inspection device.

  In the embodiment described above, an example in which a tension spring, which is an elastic member 25, is bridged between a spring support portion 21 provided in the lower portion of the arm member 20 and a spring support portion 22 provided in the attachments 13A and 13B. However, the upper ends of the pair of arm members 20 may be coupled by the elastic member 25.

  In the above-described embodiment, the operator manually joins the pipes 2 and 3 using a tool, and further manually operates the pipe inspection apparatus 10 so as to be held in the outer periphery of the pipe near the joint. However, for example, the supporting metal member 15 is attached to the mounting bracket 15, and the pipe inspection apparatus 10 of the present invention is attached to the joining apparatus that automatically joins the pipes. You may comprise so that it may be enclosed in an outer periphery and it test | inspects automatically.

  Note that the pipe inspection apparatus according to the present invention can be widely applied to piping construction for sewage pipes in addition to water pipes. Moreover, it can be used for inspection of joints of resin pipes in addition to iron pipes. Furthermore, it can also be used for inspection of petrochemical plant piping.

  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: Pipe 10: Pipe inspection device 11: Main body casing 12A, 12B: Recesses 13A, 13B, 13C, 14A, 14B, 14C: Attachment 20: Arm member 23: Oscillating shaft 25: Elastic member 27: Spacer 30: Positioning member 40: Inspection equipment (imaging device)

Claims (10)

A pipe inspection apparatus comprising: a main body casing; an arm member that is accommodated in the main body casing and can be arranged along at least a part of an outer periphery of the pipe; and an inspection device attached to the arm member,
A swing shaft that pivotally supports the main body casing so that the arm member can swing between an inspection posture along which the arm member follows the outer periphery of the tube and a non-inspection posture that is separated from the outer periphery of the tube;
An elastic member that urges the arm member to be in a non-inspection posture;
A swinging biasing member that swings the arm member to the inspection posture against the biasing force of the elastic member by being pressed at the outer periphery of the tube;
A tube inspection device.   The swing urging member is constituted by the arm member, and the one end side of the arm member is pressed by the outer peripheral portion of the pipe so that the other end side of the arm member is close to the pipe and changes its posture to the inspection posture. The tube inspection apparatus according to claim 1, which is configured as described above.   A recess that allows the pipe to enter is formed on a pair of opposing surfaces of the main casing, and attachments that adjust the size of each recess according to the nominal diameter of the tube are attached to each of the opposing surfaces. The pipe inspection apparatus according to claim 1, wherein the swing shaft is attached.   The tube inspection apparatus according to claim 3, wherein the elastic member is attached to the attachment.   The tube inspection apparatus according to claim 3 or 4, wherein the arm member is disposed so as to sandwich the tube, the attachment is divided with the tube interposed therebetween, and the arm member is attached to each of the divided attachments.   The swing urging member is constituted by the arm member, and the other end side of the arm member is brought close to the tube and changes its posture to the inspection posture by being pressed by the outer peripheral portion of the tube to one end side of the arm member. The pipe inspection apparatus according to claim 1, further comprising a spacer member.   7. The positioning member according to claim 1, further comprising a positioning member that defines a relative distance between the outer peripheral surface of the tube on the insertion side and the inspection device and a relative distance between the tube end surface on the receiving side and the inspection device. The tube inspection device described in 1.   The pipe inspection apparatus according to any one of claims 1 to 7, wherein a plurality of the inspection devices are arranged in a distributed manner in a circumferential direction of the arm member.   The tube inspection device according to claim 8, wherein the inspection device is configured by an imaging device.   The said pipe | tube is a pipe | tube mutually joined by inserting the insertion opening of the other pipe | tube in the receptacle of one pipe | tube, The joining state of a pipe | tube is test | inspected by the said test | inspection apparatus. The tube inspection device described in 1.