WO2019163787A1 - Dispositif endoscopique - Google Patents

Dispositif endoscopique Download PDF

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Publication number
WO2019163787A1
WO2019163787A1 PCT/JP2019/006143 JP2019006143W WO2019163787A1 WO 2019163787 A1 WO2019163787 A1 WO 2019163787A1 JP 2019006143 W JP2019006143 W JP 2019006143W WO 2019163787 A1 WO2019163787 A1 WO 2019163787A1
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WO
WIPO (PCT)
Prior art keywords
insertion tube
tube
endoscope apparatus
borescope
unit
Prior art date
Application number
PCT/JP2019/006143
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　洋一
康隆 福家
昌則 藤岡
Original Assignee
三菱日立パワーシステムズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱日立パワーシステムズ株式会社 filed Critical 三菱日立パワーシステムズ株式会社
Priority to JP2020500972A priority Critical patent/JP6850937B2/ja
Publication of WO2019163787A1 publication Critical patent/WO2019163787A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes

Definitions

  • the present disclosure relates to an endoscope apparatus.
  • an industrial endoscope device called a borescope is used.
  • the borescope is built in an elongated sheath tube, and an observation unit including a photographing element such as a CCD is mounted on the tip. Then, the sheath tube is inserted into the equipment and visually inspected and inspected by an observation unit.
  • Patent Document 1 discloses an endoscope apparatus in which a sheath tube is divided into a plurality of flexible tubes, and the flexible tubes are connected in series with a borescope being inserted into the flexible tube. Is disclosed.
  • Patent Document 2 when used in a high-temperature apparatus such as a gas turbine or a steam turbine, a sheath tube with a built-in borescope is provided, and cooling air is supplied between the borescope and the inner surface of the tube to provide heat resistance.
  • An endoscope apparatus configured as described above is disclosed.
  • Patent Documents 1 and 2 do not disclose this solution, and in particular, when the sheath tube is a flexible tube as in the endoscope apparatus described in Patent Document 1, it is lowered downward by gravity. The observation unit cannot be controlled to a desired position and orientation.
  • An embodiment according to the present disclosure is intended to make it possible to specify a region to be inspected that is observed by an observation unit inside an inspected device.
  • An endoscope apparatus for inspecting the inside of a device to be inspected, A borescope having an observation unit mounted on the tip, and an inspection section including a sheath tube in which the borescope is housed; An insertion tube into which the inspection unit is inserted; A feed mechanism portion capable of inserting or withdrawing the insertion tube into or from the inspected device; A turning mechanism capable of rotating the insertion tube inserted into the inspected device about an axis; Is provided.
  • the feed mechanism portion and the turning mechanism portion are provided at different positions in the axial direction of the insertion tube,
  • the feed mechanism is configured to rotate integrally with the insertion tube by the rotational force generated by the turning mechanism.
  • the driving force transmission unit that transmits the driving force to the insertion tube in each of the mechanism units. Can be arranged adjacent to the insertion tube without being restricted by the arrangement of the other mechanism portions. Therefore, the structure of the drive force transmission part of both mechanism parts can be simplified.
  • the turning mechanism unit is A stationary part supported by a stationary structure; A rotating unit rotatably supported by the stationary unit, the rotating unit configured to transmit the rotational force generated by the turning mechanism unit, and
  • the feed mechanism unit is configured to be coupled to the rotating unit so that the rotational force is transmitted, and the rotational force transmitted to the feed mechanism unit is transmitted to the insertion tube.
  • the rotational force transmitted to the rotating portion is transmitted to the insertion tube via the feeding mechanism portion, so that the feeding mechanism portion and the insertion tube are moved together around the axis of the insertion tube. Rotate. Therefore, the rotation of the insertion tube by the turning mechanism and the feeding of the insertion tube by the feeding mechanism can be performed simultaneously.
  • the feed mechanism includes a pinion that meshes with a rack provided along the axial direction on the outer peripheral surface of the insertion tube;
  • the rotational force is configured to be transmitted to the feed mechanism portion via a meshing portion where the rack and the pinion mesh.
  • the feed force for feeding the insertion tube in the axial direction and the insertion tube rotate in the circumferential direction via the meshing portion where the rack and pinion provided on the outer peripheral surface of the insertion tube mesh with each other. Since the rotational force to be transmitted can be transmitted, the transmission mechanism for the feed force and the rotational force can be simplified.
  • the roller part is configured to rotate integrally with the feed mechanism part,
  • the rotational force transmitted to the feed mechanism is configured to be transmitted to the insertion tube via the roller.
  • the roller portion can serve both as a guide function for feeding the insertion tube in the axial direction and a function for transmitting rotational force from the feed mechanism portion to the insertion tube.
  • the inspection unit is coupled to the insertion tube on the distal end side of the insertion tube, It further includes a turning portion provided on the proximal end side of the insertion tube, for turning the inspection portion around the insertion tube. If the linear inspection section is twisted in the insertion tube, the observation unit may bend in an unintended direction, and the visual field may not be directed to the target inspection site. According to the configuration of (6) above, since the inspection part can be rotated around the insertion tube, the twisting of the inspection part in the insertion tube can be suppressed.
  • the carrying part is A plate portion extending radially outward from a proximal end portion of the insertion tube; A joint portion for fixing the plate portion and the inspection portion; including.
  • the inspection section is fixed to the plate section that is coupled to the insertion pipe at the distal end side of the insertion pipe and that rotates around the insertion pipe at the joint section on the proximal end side of the insertion pipe. Therefore, it can be rotated around the insertion tube. In addition, the cost of the carrying part can be reduced.
  • the sheath tube has an inner diameter larger than an outer diameter of the borescope; Cooling air is introduced between the borescope and the sheath tube.
  • the insertion tube is A first insertion tube that supports the inspection part in a state where the inspection part protrudes from a tip; A second insertion tube connected to the rear end side of the first insertion tube; including.
  • the insertion tube is composed of the insertion tube divided into a plurality along the axial direction, the insertion tube is composed of a single long tube. Easy to handle. That is, by adjusting the number of insertion tubes to be assembled according to the feeding amount of the inspection unit, it is easy to attach to the device to be inspected, and inspection is possible even in a narrow space.
  • the first insertion tube has an axial groove portion on an outer peripheral surface
  • the second insertion tube includes a rack provided in the axial direction at a circumferential position continuous with the axial groove portion.
  • At least one of the first insertion tube and the second insertion tube includes two division tubes divided in the circumferential direction. According to the configuration of (11) above, since the split tube is composed of two split tubes divided in the circumferential direction, it is easy to connect to the rear end of the insert tube into which the sheath tube is inserted and used for inspection. become.
  • the borescope has a movable section that is bent during a bending operation in a region exposed from the distal end of the insertion tube, and the sheath tube has a movable region that can be bent following the bending of the movable section,
  • a first support portion is provided on the inner peripheral surface on the distal end side of the movable region of the sheath tube so as to be immovable in the axial direction of the sheath tube, and grips a portion on the distal end side of the movable section.
  • the distal end of the borescope can be obtained even if the distal end portion of the sheath tube is curved. And axial displacement between the sheath tube and the distal end of the sheath tube can be prevented. This prevents the observation unit provided at the tip of the borescope from excessively protruding from the sheath tube and being overheated by the heat in the device to be inspected, and conversely, the sheath tube enters the field of view of the observation unit. Can be prevented from being narrowed.
  • a second support portion is further provided on an inner peripheral surface on the rear end side of the movable region of the sheath tube, and grips a portion of the borescope on the rear end side of the movable section.
  • the second support portion grips the rear end side portion of the borescope movable section that can be bent on the rear end side of the movable area of the sheath tube.
  • the influence of an external force or the like acting from the rear end side can be suppressed from reaching the front end side of the borescope.
  • the distal end portion of the borescope can be stably fixed to the sheath tube, and the bending of the movable region of the sheath tube can be Since it becomes easy to follow the curvature of the movable section of the scope, it becomes easy to change the direction of the distal end portion of the borescope.
  • the sheath tube is configured to be bendable in at least a part of a region on the rear end side from the second support portion. According to the configuration of (14) above, since the sheath tube is configured to be bendable in at least a part of the region on the rear end side from the second support portion, the sheath tube is inserted into the narrow portion inside the device under test. When inspecting, the sheath tube can be easily handled.
  • the insertion tube has rigidity against bending, and is configured to support the sheath tube on the rear end side with respect to the movable region in a state where the movable region protrudes from the front end.
  • stiffness against bending means rigidity that can maintain the shape at the time of manufacture without bending due to its own weight, and is hereinafter also referred to as “bending rigidity”.
  • the rigid insertion tube supports the sheath tube on the rear end side from the movable region, the sheath tube is supported by the insertion tube and the curvature of the movable region of the sheath tube is
  • the observation unit can be positioned at a desired position.
  • the first support part is An annular portion formed to surround the borescope; At least two legs extending along the radial direction of the sheath tube so as to contact the inner surface of the sheath tube from the annular portion; including.
  • the first support portion since the first support portion has the annular portion and the leg portion, the distal end portion of the borescope can be stably supported at the center of the sheath tube, and thereby, around the observation unit. A space through which cooling air can pass can be secured. Further, the first support portion can be made compact.
  • the first support portion includes at least two divided pieces that are divided at at least two locations in the circumferential direction of the first support portion, Each of the two divided pieces has a flange portion that can come into contact with each other and can be coupled by the first coupler when the annular portion is disposed so as to surround the borescope. According to the configuration of (17), since the first support portion includes at least two divided pieces and can be coupled by the flange portion, it can be easily attached to and detached from the borescope.
  • the two legs are configured to be connectable to the sheath tube by a second coupler.
  • the two legs are coupled to the sheath tube by the second coupler and are provided so as not to move in the axial direction of the sheath tube, so that even if the movable section of the borescope is curved, Axial displacement between the distal end portion of the borescope and the distal end portion of the sheath tube can be prevented. Therefore, the observation unit can be reliably cooled even when the tip of the inspection section is curved, and there is no possibility that the sheath tube narrows the field of view of the observation unit.
  • the inspection target portion that the observation unit visually recognizes inside the device to be inspected. can be identified.
  • FIG. 1 is a longitudinal sectional view illustrating an overall configuration of an endoscope apparatus according to an embodiment with a part thereof omitted.
  • FIG. It is the A section enlarged view in FIG. It is a longitudinal cross-sectional view of the apparatus main body of the said endoscope apparatus. It is a top view of the apparatus main body of the said endoscope apparatus.
  • FIG. 2 is a cross-sectional view taken along line BB in FIG.
  • FIG. 2 is a cross-sectional view taken along the line CC in FIG.
  • FIG. 2 is a sectional view taken along line DD in FIG. 1. It is the perspective view seen from the base end side upper part of the above-mentioned endoscope apparatus.
  • FIG. 13 is a transverse sectional view taken along the line EE in FIG. 12.
  • expressions representing shapes such as quadrangular shapes and cylindrical shapes not only represent shapes such as quadrangular shapes and cylindrical shapes in a strict geometric sense, but also within the range where the same effect can be obtained. A shape including a chamfered portion or the like is also expressed.
  • the expressions “comprising”, “comprising”, “comprising”, “including”, or “having” one constituent element are not exclusive expressions for excluding the existence of the other constituent elements.
  • FIG. 1 is a longitudinal sectional view showing the overall configuration of the endoscope apparatus 10, and FIG. 2 is an enlarged view of a portion A in FIG.
  • an inspection unit 12 and a sheath tube 16 into which the inspection unit 12 is inserted constitute an insertion unit that is inserted into the device to be inspected.
  • the inspection unit 12 includes a borescope 14 and a sheath tube 16 in which the borescope 14 is housed, and the observation unit 12 is located at a position exposed from the distal end of the sheath tube 16 at the distal end of the borescope 14.
  • the observation unit 18 includes a photographing element such as a CCD, for example, and the borescope 14 has a built-in signal line for sending a detection signal obtained by the observation unit 18 to the rear end side.
  • the insertion tube 20 is inserted into the inspected device through an opening formed in the entrance wall 200a of the inspected device, and the inspection unit 18 visually inspects and inspects the inside of the inspected device.
  • the apparatus main body 22 including the feed mechanism unit 24 and the turning mechanism unit 26 is attached to the inlet wall 200a.
  • the feed mechanism unit 24 can feed the insertion tube 20 into or out of the device to be inspected, and the turning mechanism unit 26 can rotate the insertion tube 20 about the axis. Has been.
  • the observation unit 18 can determine the amount of rotation of the insertion tube 20 by the feed mechanism 24 and the rotation amount (rotation angle) of the axis of the insertion tube 20 by the turning mechanism 26 so that the observation unit 18 It is possible to grasp which part is visually recognized.
  • the feed mechanism portion 24 is provided with an encoder 25 that measures the feed amount of the insertion tube 20
  • the turning mechanism portion 26 is provided with an encoder 27 that measures the rotation amount of the axis of the insertion tube 20. Yes. With these encoders, the position and orientation of the observation unit 18 can be grasped.
  • the insertion tube 20 has bending rigidity, so that the position of the observation unit 18 can be estimated accurately.
  • the distal end portion of the inspection unit 12 is exposed from the distal end of the insertion tube 20 and is made of a bendable material.
  • inspection part 12 containing the observation unit 18 is comprised so that it can curve to arbitrary directions by operating the operation line (not shown) incorporated in the bore scope 14.
  • the device under test 200 is a combustor provided inside a passenger compartment 202 formed by a passenger compartment wall 204 in a gas turbine, for example.
  • the apparatus main body 22 of the endoscope apparatus 10 is fixed to the inlet wall 200a of the combustor, and the insertion tube 20 is inserted into the inside through a narrow hole formed in the inlet wall 200a. Since the insertion tube 20 can be moved linearly in the direction of the arrow b by the feed mechanism 24 and can be rotated about the axis by the turning mechanism 26, the field of view of the observation unit 18 is directed to a desired inspection target site. Can do.
  • the feed mechanism unit 24 and the turning mechanism unit 26 are provided at different positions in the axial direction of the insertion tube 20, and due to the rotational force generated by the turning mechanism unit 26,
  • the feed mechanism unit 24 is configured to rotate integrally with the insertion tube 20. Since the feed mechanism unit 24 and the turning mechanism unit 26 are provided at different positions in the axial direction of the insertion tube 20, both mechanism units are adjacent to the insertion tube 20 with a driving force transmission unit that transmits a driving force to the insertion tube 20. Can be arranged. Therefore, the structure of the drive force transmission part of both mechanism parts can be simplified.
  • the turning mechanism unit 26 includes a stationary unit 30 supported by a stationary structure 28 and a rotating unit 32 rotatably supported by the stationary unit 30.
  • the rotating unit 32 is configured to transmit the rotational force generated by the turning mechanism unit 26 and configured to transmit the rotating force transmitted to the feed mechanism unit 24 to the insertion tube 20.
  • the feed mechanism unit 24 and the insertion tube 20 rotate integrally around the axis of the insertion tube 20, so the rotation of the insertion tube 20 by the turning mechanism unit 26 and the feed mechanism unit are performed by the rotating feed mechanism unit 24. 24 can simultaneously feed the insertion tube 20.
  • the stationary structure 28 is composed of a flange that is coupled to the inlet wall 200a by a bolt 34 together with the stationary portion 30.
  • the stationary structure 28 has a guide tube 38 that is inserted into the device to be inspected when the device main body 22 is fixed to the entrance wall 200a.
  • the guide tube 38 has an inner diameter that is larger than the outer diameter of the insertion tube 20.
  • the insertion tube 20 is inserted into the guide tube 38 from the space formed at the center of the device body 22 and positioned at the inspection position.
  • a rack 40 provided in the axial direction is formed on the outer peripheral surface of the insertion tube 20, and the feed mechanism unit 24 includes a pinion 42 that meshes with the rack 40.
  • the rotational force generated in the turning mechanism portion 26 is transmitted to the feed mechanism portion 24 via a meshing portion where the rack 40 and the pinion 42 mesh, and further transmitted from the feed mechanism portion 24 to the insertion tube 20. Is done.
  • the feeding force for sending the insertion tube 20 in the axial direction and the rotational force for rotating the insertion tube 20 in the circumferential direction can be transmitted via the meshing portion, thereby simplifying the transmission mechanism for the feeding force and the rotational force. it can.
  • the rack 40 and the pinion 42 have a tooth profile extending in a direction oblique to the axial direction (feed direction) of the insertion tube 20. Accordingly, when the pinion 42 rotates in the circumferential direction of the insertion tube 20, the meshing portion between the rack 40 and the pinion 42 can apply a rotational force that rotates the insertion tube 20 about the axis to the insertion tube 20.
  • the feed mechanism unit 24 includes a handle 44 for rotating the pinion 42 to feed or withdraw the insertion tube 20 into or from the inspected device, and the turning mechanism unit 26 has the insertion tube 20 as an axis.
  • a handle 50 for rotation is provided. The driving force generated by the rotation of the handle 44 is transmitted to the pinion 42 via the power transmission unit 45. The rotational force generated by the handle 50 is transmitted to the rotation unit 32 and the feed mechanism unit 24 via the power transmission unit 46.
  • the stationary portion 30 has a cylindrical portion 31 that surrounds the insertion tube 20 inserted into the guide tube 38, and the rotating portion 32 is a cylindrical portion that is disposed between the cylindrical portion 31 and the insertion tube 20. 33.
  • an axial groove 52 is formed on the outer peripheral surface of the insertion tube 20, and as shown in FIGS. 7 to 9, a part of the wheel 56 is formed in the axial groove 52.
  • the roller part 54 inserted in is provided.
  • the roller portion 54 is configured to rotate integrally with the feed mechanism portion 24 by the rotational force transmitted from the turning mechanism portion 26, and the rotational force transmitted from the turning mechanism portion 26 to the feed mechanism portion 24 is It is configured to be transmitted to the insertion tube 20 via the roller portion 54.
  • the insertion tube 20 rotates integrally with the feed mechanism portion 24 via the roller portion 54.
  • the roller portion 54 has a function of guiding the insertion tube 20 fed along the axial direction and a function of transmitting the rotational force of the feed mechanism portion 24 to the insertion tube 20.
  • an arrow indicates a feeding direction in which the insertion tube 20 is sent to the inside of the device to be inspected.
  • the back side of the drawing is the feeding direction.
  • the roller unit 54 includes a support table 58 that supports the wheels 56, and the support table 58 is connected to the casing of the feed mechanism unit 24.
  • a guide rail 60 is provided in the axial groove portion 52, and the wheel 56 is in contact with the guide rail 60 and guides the insertion tube 20 via the guide rail 60.
  • the inspection unit 12 is coupled to the insertion tube 20 on the distal end side of the insertion tube 20. Further, as shown in FIGS. 1 and 3, a rotation portion 62 for rotating the inspection portion 12 to the insertion tube 20 is provided on the proximal end side of the insertion tube 20. Thereby, the inspection unit 12 can be rotated around the insertion tube 20. If the inspection unit 12 does not rotate with the insertion tube 20, the inspection unit 12 may be twisted and the tip of the inspection unit 12 may be bent in an unintended direction, and the observation unit 18 may not be directed to the target inspection site. According to the present embodiment, it is possible to prevent the inspection unit 12 from being twisted by rotating the inspection unit 12 around the insertion tube 20.
  • a cap 70 for coupling the inspection unit 12 to the insertion tube 20 is provided at the distal end of the insertion tube 20.
  • a plurality of screw holes extending from the outer peripheral side toward the center are formed in the cap 70, and the inspection unit 12 is inserted into the hole formed in the axial center of the cap 70.
  • the outer peripheral portion 70a and the inner portion 70b constituting the cap 70 are coupled to each other by a plurality of flat bolts 72 inserted into the screw holes.
  • the borescope 14 inserted into the sheath tube 16 has a plurality of pins 74 extending from the outer peripheral side of the cap 70 toward the borescope 14, and a cooling passage (space s ⁇ b> 1) to be described later is secured to the cap 70. Fixed.
  • the surrounding portion 62 fixes the plate portion 64 that extends radially outward from the base end portion of the insertion tube 20, and the plate portion 64 and the inspection portion 12. And a joint portion 66 to be used. According to this embodiment, since the plate portion 64 and the inspection portion 12 are fixed by the joint portion 66, the inspection portion 12 can be rotated around the insertion tube 20. Moreover, the structure of the surrounding part 62 can be simplified and reduced in cost.
  • an air tube 68 is connected to the joint 66. Cooling air a is supplied from the air tube 68 to a space s 1 (see FIG. 10) formed between the borescope 14 and the sheath tube 16. The cooling air a reaches the tip of the inspection unit 12 and can cool the observation unit 18. This can prevent the observation unit 18 from being damaged when the inside of the device under test is in a high temperature atmosphere.
  • a protective cover 29 is provided so as to cover the turning mechanism portion 26.
  • a branch tube branched from the air tube 68 on the upstream side of the illustrated air tube 68 is connected to the protective cover 29, and cooling air is supplied into the protective cover 29 from the branch tube.
  • the turning mechanism 26 can be protected from heating by heat transmitted from the device under inspection during inspection.
  • FIGS. 5 to 7 since the insertion tube 20 is formed with the axial groove portion 52 in the entire axial direction, the insertion tube 20 is guided by the roller portion 54 over the entire length of the insertion tube 20. .
  • the sheath tube 16 has an inner diameter larger than the outer diameter of the borescope 14, and a space s 1 through which the cooling air a flows is formed between the outer peripheral surface of the borescope 14 and the inner surface of the sheath tube 16.
  • the observation unit 18 provided at the tip of the borescope 14 can be cooled by the cooling air a introduced into the space s1 from the device body 22 side, and the observation unit 18 can be prevented from being damaged by the high temperature atmosphere in the device to be inspected.
  • an air discharge hole 82 a through which the cooling air a supplied to the space s 1 is discharged is formed at the tip of the tip portion 82.
  • the insertion tube 20 is composed of a plurality of insertion tubes divided along the axial direction.
  • FIG. 1 shows an example constituted by four insertion tubes 20 (20a, 20b, 20c, 20d).
  • the inspection is performed more than the case where the insertion tube 20 is constituted by one long tube. Easy handling on site. That is, by adjusting the number of divided pipes to be assembled in accordance with the feeding amount of the inspection unit 12, it is easy to attach to the device body 22 without taking up space.
  • the first insertion tube 20 (20a) has an axial groove 52 on the outer peripheral surface, and the second insertion tube 20 (20b) is shown in FIG.
  • the rack 40 provided in the axial direction is provided at a circumferential position that is continuous with the axial groove portion 52.
  • the rack 40 is not provided in the first insertion tube 20 (20a).
  • the second insertion tube 20 (20b) in which the rack 40 is formed is connected in series to the rear end of the first insertion tube 20 (20a) in which the rack 40 is not formed.
  • the connected first insertion tube 20 (20a) and second insertion tube 20 (20b) are formed in the center of the device body 22 from the inlet side of the device body 22 with the first insertion tube 20 (20a) first. Insert into the space.
  • the first insertion tube 20 (20 a) does not interfere with the pinion 42 because the axial groove 52 is formed at a position where the rack 40 meshes with the pinion 42 provided in the feed mechanism unit 24.
  • the second insertion tube 20 (20b) is sent into the device under test by the feed mechanism 24.
  • the device main body 22 including the feeding mechanism portion 24 and the turning mechanism portion 26 is installed on the inlet wall 200a of the device to be inspected, and the first insertion tube 20 (20a) and the second insertion tube 20 (20b). ) Can be performed separately and simultaneously in parallel, so that the assembly time can be shortened and the inspection range at the same inspection time can be expanded. Also, the assembly of the first insertion tube 20 (20a) and the second insertion tube 20 (20b) and the assembly of the feed mechanism unit 24 and the turning mechanism unit 26 can be pre-assembled, and the assembly time at the site can be shortened. it can.
  • the next insertion tube 20 may be connected in sequence to the front insertion tube 20, so that the insertion tube 20 to the device under test can be connected even in a narrow space. Easy to insert.
  • the insertion tube 20 is composed of four insertion tubes 20 (20a to 20d), and the second to fourth insertion tubes 20 (20b to 20d) except for the first insertion tube 20 (20a). ) Is formed with a rack 40. Therefore, the third insertion tube 20 (20c) and the fourth insertion tube 20 (20d) are connected to the second insertion tube 20 (20b) as necessary while the second insertion tube 20 (20b) is fed by the feeding mechanism 24.
  • the third insertion tube 20 (20c) and the fourth insertion tube 20 (20d) may be sequentially connected by the feed mechanism unit 24 in series with the rear end.
  • the guide rail 60 is provided in the second to fourth insertion pipes 20 (20b to 20d) and is not provided in the first insertion pipe 20 (20a).
  • the first insertion tube 20 (20 a) does not interfere with the roller portion 54 because the axial groove portion 52 is provided at a position where the first insertion tube 20 (20 a) meshes with the roller portion 54.
  • the two axial groove portions 52 are provided at positions where the roller portions 54 mesh with each other.
  • the number of the axial groove portions 52 can be increased or decreased as appropriate according to the number of the roller portions 54.
  • the borescope 14 has a movable section 14 a so that a region exposed from the distal end of the insertion tube 20 can be bent during a bending operation.
  • the movable section 14a is formed of a material that can bend the covering layer that covers the signal line.
  • the sheath tube 16 has a movable region 16a that can be bent following the bending of the movable section 14a when the movable section 14a is bent.
  • part of the bore scope 14 of the front end side from the movable area 14a is provided in the internal peripheral surface of the sheath pipe
  • the first support portion 80 is provided so as not to move in the axial direction of the sheath tube 16.
  • the 1st support part 80 is constituted so that a part on the tip side rather than movable section 14a of borescope 14 can be grasped.
  • the term “impossible to move” means that the first support portion 80 is fixed to the sheath tube 16 by a coupling tool such as a bolt or a welding method, as will be described later.
  • the “gripping” means a state in which the borescope 14 is held by the first support portion 80. Accordingly, the borescope 14 is supported by the first support portion 80 without being significantly displaced in the axial direction with respect to the sheath tube 16. Therefore, when the distal end portion 82 of the inspection portion 12 exposed from the distal end of the insertion tube 20 is curved, insufficient cooling or poor inspection of the distal end portion of the borescope 14 can be suppressed.
  • the first support portion 80 grips the distal end portion of the borescope 14 relative to the movable section 14a, even if the distal end portion 82 of the inspection portion 12 is curved, The axial displacement between the distal end of the borescope 14 and the distal end of the sheath tube 16 can be prevented by the frictional force acting between the support portion 80. As a result, the distal end portion of the borescope 14 can be stably cooled, and the sheath tube 16 can be prevented from entering the visual field of the observation unit 18 and narrowing the field of view.
  • the movable section 14a of the borescope 14 and the movable region 16a of the sheath tube 16 are arranged in a region that substantially overlaps in the axial direction of the sheath tube 16. This facilitates the bending of the borescope 14 in any direction.
  • the movable section 14a and the movable region 16a may have a region that does not overlap in the axial direction as long as the sheath tube 16 can be bent following the bending of the borescope 14.
  • a second support portion 84 provided on the inner peripheral surface of the sheath tube 16 on the rear end side of the movable region 16 a of the sheath tube 16 is provided.
  • the second support portion 84 supports a portion on the rear end side of the movable section 14 a of the borescope 14.
  • the second support portion 84 can suppress the influence of external force or the like acting on the borescope 14 from the rear end side from reaching the borescope 14 on the front end side from the second support portion 84.
  • the distal end portion of the borescope 14 including the observation unit 18 can be stably fixed to the sheath tube 16. .
  • the second support portion 84 is not fixed to the borescope 14 and the sheath tube 16, but the second support portion 84 is not fixed to the borescope 14 and the sheath tube 16. Install so that relative movement is possible. This allows a difference in thermal expansion between the borescope 14 and the sheath tube 16.
  • the second support portion 84 by fixing the second support portion 84 to only one of the borescope 14 or the sheath tube 16, the difference in thermal expansion in these axial directions can be allowed.
  • the sheath tube 16 is configured to be bendable in at least a part of a region on the rear end side from the second support portion 84.
  • the sheath tube 16 can be flexible by providing flexibility or elasticity. This facilitates handling of the sheath tube 16 and facilitates insertion of the sheath tube 16 even in a narrow portion of the device to be inspected.
  • FIG. 11A shows an embodiment when the sheath tube 16 is flexible. Since the sheath tube 16 is flexible, the sheath tube 16 is easy to handle and from the entrance of the device under test 200 to the inside of the device under test 200. Easy to insert.
  • the distal end portion of the insertion tube 20 is disposed on the rear end side of the movable region 16 a of the sheath tube 16.
  • the insertion tube 20 has the sheath tube 16 inserted therein, that is, is arranged on the outer peripheral side of the sheath tube 16.
  • the insertion tube 20 has bending rigidity, and supports the sheath tube 16 on the rear end side of the movable region 16a in a state where the movable region 16a of the sheath tube 16 protrudes from the distal end of the insertion tube 20.
  • the sheath tube 16 can be supported without preventing the distal end portion 82 from being bent. Further, since the insertion tube 20 has bending rigidity, the observation unit 18 can be positioned at a desired location to be inspected.
  • the sheath tube 16 and the insertion tube 20 are made of a metal material such as stainless steel.
  • the movable section 14a and the movable region 16a are formed of a laminate in which a wire made of a metal material such as stainless steel is woven in a mesh shape, and a heat-resistant rubber liner is coated on the mesh.
  • the insertion tube 20 is provided on the outer peripheral side of the sheath tube 16 on the rear end side of the movable region 16 a of the sheath tube 16. According to this embodiment, since the insertion tube 20 is provided on the outer peripheral side of the sheath tube 16, the sheath tube 16 can be supported from the outer peripheral side with a large support strength. In addition, by supporting the sheath tube 16 from the outer peripheral side by the insertion tube 20, the sheath tube 16 can be made to bend conversely, which makes it easy to handle the sheath tube 16.
  • a space s2 is formed between the outer peripheral surface of the sheath tube 16 and the inner peripheral surface of the insertion tube 20, and the elastic body 86 is press-fitted into the space s2.
  • the frictional force of the elastic body 86 can suppress the relative movement of the sheath tube 16 and the insertion tube 20 in the axial direction, and the slight movement of the sheath tube 16 and the insertion tube 20 in the axial direction due to the difference in the thermal expansion in the axial direction.
  • a ring-shaped disk 88 that closes the space s2 is formed integrally with the insertion tube main body at the distal end side end portion of the insertion tube 20.
  • an elastic body 86 having a quadrangular cross section is pressed into the space s2 so as to abut on the ring-shaped disk 88. Thereby, the frictional force of the elastic body 86 against the sheath tube 16 and the insertion tube 20 can be increased.
  • a similar configuration including the elastic body 86 may be employed on the rear end side of the insertion tube 20.
  • the insertion tube 20 includes a first insertion tube 20 that supports the sheath tube 16 on the outer periphery on the rear end side of the movable region 16a with at least the movable region 16a protruding from the tip. (20a) and a second insertion tube 20 (20b) connected to the rear end side of the first insertion tube 20 (20a).
  • the insertion tube is composed of one long tube when there are many obstacles around the inspection target portion or the periphery of the inspection target portion is narrow, the handling becomes difficult.
  • the insertion tube 20 can be divided at least into the first insertion tube 20 (20a) and the second insertion tube 20 (20b), the insertion tube 20 is divided into the first insertion tube 20 (20a) and the second insertion tube 20 (20a).
  • the insertion tube 20 can be easily handled by bringing it into the site in a state of being divided into the insertion tube 20 (20b) and connecting them at the site to form one long insertion tube.
  • the insertion tube 20 has three divided first insertion tubes 20 (20a), second insertion tubes 20 (20b), and third insertion tubes 20 (20c). By dividing the insertion tube 20 into three along the axial direction, the insertion tube 20 can be easily handled in a narrow space.
  • the coupling structure of the divided insertion tubes is formed by abutting an end 90 of one insertion tube with a reduced diameter portion 92 formed at the end of the other insertion tube. They are fitted together, and both are coupled by a coupling tool 94 such as a bolt.
  • At least one of the first insertion tube 20 (20a) and the second insertion tube 20 (20b) is divided into two divided tubes 21 (21a, 21b) divided in the circumferential direction. including.
  • the first insertion tube 20 (20a) and the second insertion tube 20 (20b) can be brought into the field in a state of being divided into two parts. It is easy and the connection between the insertion tubes becomes easy.
  • the inspection portion 12 and the first insertion tube 20 (20a) on the distal end side are inserted in combination, and if the length of the insertion tube 20 becomes insufficient, the second The two divided tubes 21 (21a, 21b) constituting the insertion tube 20 (20b) are assembled to form the second insertion tube 20 (20b), and the formed second insertion tube 20 (20b) is used as the first insertion tube 20. Connect to the rear end of (20a).
  • each of the dividing tubes 21 is disposed so as to surround the sheath tube 16.
  • the first insertion tube 20 (20a) may be an integral tube, or may be constituted by a divided tube 21 (21a, 21b) divided into two along the circumferential direction. Good.
  • the first support portion 80 includes an annular portion 96 formed so as to surround the sheath tube 16, at least two legs 98 (98 a, 98 b), The two leg portions 98 (98a, 98b) extend from the annular portion 96 along the radial direction of the sheath tube 16 so as to contact the inner surface of the sheath tube 16.
  • the 1st support part 80 since the 1st support part 80 has the annular part 96 and the leg part 98 (98a, 98b), the borescope 14 can be stably supported by the center part in the sheath pipe
  • the first support portion 80 includes at least two divided pieces 100 (100a, 100b) divided at at least two locations in the circumferential direction of the first support portion 80.
  • the two divided pieces 100 (100a, 100b) can be brought into contact with each other when the annular portion 96 is disposed so as to surround the borescope 14, and can be coupled by the coupler 102 (first coupler).
  • the flange portion 104 is provided.
  • the first support portion 80 can be easily assembled.
  • the 1st support part 80 since the 1st support part 80 has at least 2 division piece 100 (100a, 100b) and can be mutually connected by the flange part 104, attachment or detachment to the borescope 14 becomes easy. .
  • the two legs 98 (98a, 98b) are configured to be connectable to the sheath tube 16 by a coupler 106 (second coupler) such as a bolt.
  • the two legs 98 (98a, 98b) are provided so as to be immovable in the axial direction of the sheath tube 16 by the coupling device 106, so that even if the movable section 14a of the borescope 14 is curved, Axial displacement from the tip of the sheath tube 16 can be prevented. Therefore, the borescope 14 can be stably cooled, and the sheath tube 16 can be prevented from obstructing the visual field of the observation unit 18.
  • a bolt hole 106 a is formed in the sheath tube 16, and the first support portion 80 is assembled by screwing a bolt as a coupling tool 106 into the bolt hole 106 a.
  • the second support portion 84 shown in FIG. 10 can have the same configuration as the first support portion 80.
  • the second support portion 84 takes into account the difference in the axial thermal expansion between the borescope 14 and the sheath tube 16, and in order to allow these thermal expansion differences, the second support portion 84 slightly increases in the axial direction of the sheath tube 16. May be provided so as to be movable. For example, in the configuration shown in FIG. 16, the coupling device 106 is not coupled to the sheath tube 16.
  • an endoscope apparatus capable of specifying a part to be inspected inside an inspected apparatus.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

Selon certains modes de réalisation, un dispositif endoscopique est conçu pour inspecter l'intérieur d'un appareil à inspecter, et comprend: un module d'inspection comprenant un endoscope équipé d'une unité d'observation en son extrémité avant, et un tube manchonné dans lequel est logé l'endoscope; un tube d'insertion dans lequel le module d'inspection est inséré; un module à mécanisme d'avance pouvant insérer le tube d'insertion dans l'appareil à inspecter ou de le retirer de celui-ci; et un module à mécanisme de rotation pouvant faire tourner autour de son axe le tube d'insertion inséré dans l'appareil à inspecter.
PCT/JP2019/006143 2018-02-20 2019-02-19 Dispositif endoscopique WO2019163787A1 (fr)

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JP2020500972A JP6850937B2 (ja) 2018-02-20 2019-02-19 内視鏡装置

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JP2018-027502 2018-02-20
JP2018027502 2018-02-20

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WO2019163787A1 true WO2019163787A1 (fr) 2019-08-29

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846573A (en) * 1987-04-10 1989-07-11 Identechs Corporation Shape memory effect alloy pull wire articulator for borescopes
JP2002023066A (ja) * 2000-07-13 2002-01-23 Mitsubishi Heavy Ind Ltd 管群検査装置
JP2007296047A (ja) * 2006-04-28 2007-11-15 Olympus Corp 内視鏡用冷却装置及び内視鏡装置
JP2008067977A (ja) * 2006-09-15 2008-03-27 Olympus Corp 内視鏡用冷却装置及び内視鏡装置
WO2011145681A1 (fr) * 2010-05-21 2011-11-24 オリンパスメディカルシステムズ株式会社 Endoscope ayant une seconde section de courbure
JP2014113352A (ja) * 2012-12-11 2014-06-26 Olympus Corp 内視鏡装置の挿入支援情報検出システム及び内視鏡装置
WO2015083526A1 (fr) * 2013-12-05 2015-06-11 オリンパス株式会社 Procédé de commande d'endoscope et système d'endoscope
JP2016009168A (ja) * 2014-06-26 2016-01-18 三菱重工業株式会社 漏れ検査装置
JP2019070252A (ja) * 2017-10-06 2019-05-09 株式会社日本ピット 複合ボルト、及び建物の構造体への被支持部材の支持構造

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58172906U (ja) * 1982-05-13 1983-11-18 オリンパス光学工業株式会社 硬性内視鏡の保護シ−ス

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846573A (en) * 1987-04-10 1989-07-11 Identechs Corporation Shape memory effect alloy pull wire articulator for borescopes
JP2002023066A (ja) * 2000-07-13 2002-01-23 Mitsubishi Heavy Ind Ltd 管群検査装置
JP2007296047A (ja) * 2006-04-28 2007-11-15 Olympus Corp 内視鏡用冷却装置及び内視鏡装置
JP2008067977A (ja) * 2006-09-15 2008-03-27 Olympus Corp 内視鏡用冷却装置及び内視鏡装置
WO2011145681A1 (fr) * 2010-05-21 2011-11-24 オリンパスメディカルシステムズ株式会社 Endoscope ayant une seconde section de courbure
JP2014113352A (ja) * 2012-12-11 2014-06-26 Olympus Corp 内視鏡装置の挿入支援情報検出システム及び内視鏡装置
WO2015083526A1 (fr) * 2013-12-05 2015-06-11 オリンパス株式会社 Procédé de commande d'endoscope et système d'endoscope
JP2016009168A (ja) * 2014-06-26 2016-01-18 三菱重工業株式会社 漏れ検査装置
JP2019070252A (ja) * 2017-10-06 2019-05-09 株式会社日本ピット 複合ボルト、及び建物の構造体への被支持部材の支持構造

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