JP2007101814A - Endoscope inserter and endoscope insertion method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an endoscope inserter capable of guiding an endoscope main body even in a valve chamber (pit). <P>SOLUTION: The endoscope inserter includes a main body 21 removably attached to an upper part of a vertical pipe, an insertion bar 47 vertically movably inserted to the main body 21 in a water-tight state, an endoscope holder 61 provided in a lower end part of the insertion bar 47, and an extension bar 137 removably coupled with the insertion bar 47. The insertion bar 47 is pierced in a diametral direction by a circular stop hole 53 and is locked to the main body 21 by inserting a pin 135 to the stop hole 53 through a locking tool 37 of the main body 21 and allows the extension bar 137 to be coupled therewith. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an endoscope inserter and an insertion method used mainly for observing a situation in a water supply water distribution pipe with continuous water.

The present inventor has previously proposed an endoscope inserter described in Patent Document 1 below. This conventional endoscope inserter is composed of an outer cylinder (30), which is composed of an upper cylinder (38) and a lower cylinder (39) and is installed with its lower end attached to the base (13) of the fire hydrant (70). A feed rod (32) inserted into the outer tube (30), a camera guide (31) attached to the tip of the feed rod (32) and guiding the advancing direction of the endoscope (33), and an outer tube (30 ) And a packing (35) for guiding the cable (34) of the endoscope (33) and the feed rod (32) in a watertight state. In the above description, the reference numerals in parentheses are those in Patent Document 1.
JP 2003-42817 A

  However, when the feed bar is composed of a single bar, a feed bar longer than the length of the vertical pipe portion branched upward from the water distribution pipe is required. Moreover, the feed bar is arranged to extend upward from the outer cylinder in the initial state. For this reason, the vertical dimension of the entire endoscope inserter becomes relatively long. For example, an endoscope insertion work from a fire hydrant H installed in a small chamber called a valve chamber or pit P as shown in FIG. Sometimes it was difficult or impossible. In such a case, simply dividing the feed rod into a plurality of pieces and making them detachable from each other, each bar inserted sequentially into the vertical tube 3 is shorter than the length of the vertical tube portion, There is a risk of dropping into the tube. In addition, when the feed bar is divided into a plurality of parts and made detachable, if the connecting part or the member used for connection protrudes from the outer surface of the feed bar, the watertightness with the outside when the protruding part passes through the packing May be damaged.

  Further, when the endoscope main body is fed from the vertical tube 3 to the horizontal tube (water pipe) 1, the movement of the guide plate of the camera guide is important, and the endoscope main body can be guided more simply and reliably. Is desired. Furthermore, when rust humps occur in the vertical pipe, it is necessary to take measures to deteriorate the water quality and hinder the endoscope insertion work.

  The problem to be solved by the present invention is to provide an endoscope insertion device and an endoscope insertion method that are more compact and that can be easily operated in a valve chamber (pit). Another object of the present invention is to provide an endoscope inserter that can easily guide the endoscope main body, and a rust hump removing tool that can remove rust humps in a vertical tube.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is characterized in that a main body installed in a watertight state on an upper portion of a vertical pipe portion branched upward from a water distribution pipe, and the main body, An insertion rod that is maintained so as to be vertically movable with respect to the main body while being maintained in a watertight state, and whose upper end portion is exposed from the main body, and is regulated so that downward movement relative to the main body is releasable, An endoscope holder provided at the lower end portion of the insertion rod and detachably connected to the upper end portion of the insertion rod, and an endoscope holder on which the endoscope main body can be disposed, maintaining a watertight state between the main body and the An endoscope insertion device comprising an extension rod that can be inserted into a main body.

  According to the first aspect of the present invention, an endoscope for observing the situation in the pipe can be inserted in a watertight state through the vertical pipe portion provided in the water pipe. In addition, the bar for pushing the endoscope holder into the water pipe is composed of an insertion bar and one or more extension bars. Accordingly, by connecting the insertion rod and the extension rod while sequentially pushing them into the vertical tube portion, it is possible to easily work in a narrow space such as a valve chamber. Moreover, by restricting the insertion rod from dropping below a predetermined amount with respect to the main body until the extension rod is connected, the operation can be performed while preventing the insertion rod from dropping into the vertical tube.

  According to a second aspect of the present invention, the extension rod is arranged with respect to the main body in a state where the connecting portion to the insertion rod is disposed below the upper end portion of the main body and the upper end portion is exposed from the main body. 2. The endoscope inserter according to claim 1, wherein the downward movement is restricted so as to be releasable, and another extension rod is detachably connected to the upper end portion of the extension rod. .

  According to the second aspect of the present invention, the extension bars can be connected to each other in the same manner as the connection work of the extension bars to the insertion bar. Therefore, the endoscope can be inserted while preventing the extension rod from falling into the vertical tube.

  According to a third aspect of the present invention, the downward movement restriction of the insertion rod or the extension rod with respect to the main body is a stop made of a through hole or a concave hole on the outer peripheral surface of the upper end portion of the insertion rod or the extension rod. The endoscope inserter according to claim 1 or 2, wherein a hole is formed and a member inserted into the stop hole is locked to the main body.

  According to the third aspect of the present invention, since the protrusion is not formed on the outer peripheral surface of the insertion rod or the extension rod, it is easy to ensure water tightness with respect to the main body, and the lower portion of the bar with respect to the main body. Can be temporarily restricted.

  According to a fourth aspect of the present invention, the endoscope holder includes a leg portion that extends vertically downward and is provided integrally or detachably on a lower end portion of the insertion rod. A guide member that holds the base end portion rotatably and guides the lead-out of the endoscope main body into the water pipe, and the guide end portion holds the guide end portion in a state where the base end portion is rotatably held and hangs down. And a guide member that extends downward from the legs and the leg portion and rotates the guide member around the base end portion by pressing the distal end portion against the pipe bottom of the water pipe. The endoscope inserter according to any one of claims 1 to 3.

  According to the fourth aspect of the invention, when the endoscope holder is pushed downward, first, the distal end portion of the guide material is grounded to the tube bottom. And this guidance | induction material can guide | invite to the water distribution pipe of an endoscope main body by rotating a guide material around the base end part.

  The invention according to claim 5 is characterized in that it can be pushed in until the lower end of the leg comes into contact with the bottom of the water distribution pipe, and in this state, the leading end of the guide material contacts the pipe bottom. The endoscope inserter according to claim 4.

  According to the fifth aspect of the present invention, in the state where the guide member is rotated and deployed around the base end portion, the distal end portion of the guide member and the lower end portion of the leg portion are installed. The mirror body can be led to the water pipe. In addition, since the guide member is provided on the guide member side instead of the attachment portion, installation of the lower end portion of the leg portion and the tip portion of the guide member can be easily achieved.

  According to a sixth aspect of the present invention, the endoscope holder includes an attachment portion that is integrally or detachably provided at a lower end portion of the insertion rod, and the lower end portion of the attachment portion has a rust hump attached to the inside of the pipe. The endoscope inserter according to any one of claims 1 to 3, wherein a blade portion for scraping off the blade is provided.

  According to invention of Claim 6, the rust hump removal tool which has an effect of any one of Claim 1 to Claim 3 can be provided.

  According to a seventh aspect of the present invention, the main body includes a cylindrical portion extending up and down that is large enough to accommodate the endoscope holder, and is branched obliquely upward from a peripheral side surface of the cylindrical portion. The endoscope insertion device according to any one of claims 1 to 6, wherein an endoscope cable is inserted in a watertight state so as to be able to advance and retreat from an upper end portion of the branch tube. It is.

  According to the invention described in claim 7, the endoscope holder is accommodated in a state in which water distribution to the upper opening of the vertical pipe portion is stopped by a repair valve, a fire hydrant, or a saddle hydrant of the vertical pipe portion. After installing the cylindrical main body, the water stop can be released to work. This makes it possible to work with unrestricted water more easily and reliably. Also, the endoscope cable is inserted in a watertight state from a branch tube separate from the insertion rod and the extension rod. Therefore, each sealing part can be simplified.

  According to an eighth aspect of the present invention, there is provided a main body installed in a watertight state at an upper portion of a vertical pipe portion branched upward from a water distribution pipe, and a watertight state is maintained between the main body and the main body is moved up and down relative to the main body. An insertion rod that can be provided, an endoscope holder that is provided at a lower end portion of the insertion rod, and in which an endoscope main body can be disposed, and is detachably connected to the upper end portion of the insertion rod, and between the main body And an insertion rod that can be inserted into the main body while maintaining a watertight state, a concave portion or a convex portion is formed at the upper end portion of the insertion rod, and the lower end portion of the extension rod is An insertion part to the concave part or the convex part is formed, and with the concave part or the convex part of the insertion rod fitted into the insertion part, a screw is screwed from the outer surface of the insertion bar or the extension bar. The insertion rod and the extension rod are connected, and in this connected state, the screw Is an endoscope insertion unit, characterized in that does not protrude from the outer surface of the insertion bars or the build-up bars.

  According to the invention described in claim 8, the insertion rod and the extension rod are kept in a state where the screw is not protruded from the outer surface of the insertion rod at the connection portion between the insertion rod and the extension rod, and the watertight state is maintained. It is possible to move up and down.

  The invention according to claim 9 is provided with a plurality of extension rods, each of the extension rods is formed with an insertion portion at the lower end, and the upper end is a recess into which the insertion portion can be fitted. Or the convex part is formed, and the insertion bars of the extension bar arranged on the upper side are connected to the concave part or the convex part of the extension bar arranged on the lower side between the extension bars adjacent to the upper and lower sides. 9. The screw according to claim 8, wherein a screw is screwed in and connected from an outer surface of one extension rod in the fitted state, and the screw does not protrude from an outer surface of the one extension rod in the connected state. It is an endoscope inserter of description.

  According to the ninth aspect of the present invention, the connecting rod can be moved up and down in a state where a watertight state is maintained because the screw does not protrude from the outer surface of the connecting rod at the connecting portion between the extending rods. Is possible.

  The invention according to claim 10 is provided at a lower end portion of an insertion rod inserted in a watertight state from an upper portion of a vertical pipe portion branched upward from a water distribution pipe, and has a mounting portion having a leg portion extending vertically downward. The base end portion is rotatably held by the mounting portion, and the guide material guides the lead-out of the endoscope main body into the water pipe, and the base end portion is rotatably held by the guide material and is suspended. Then, the guide member and the leg portion are extended downward, and the tip portion is pressed against the bottom of the water distribution pipe, thereby rotating the guide member around the base end portion thereof. An endoscope inserter characterized by the following.

  According to the tenth aspect of the present invention, when the insertion rod is pushed downward, the leading end portion of the guide material is first grounded to the tube bottom. And this guidance | induction material can guide | invite to the water distribution pipe of an endoscope main body by rotating a guide material around the base end part.

  According to an eleventh aspect of the present invention, the guide member has a substantially semicircular cross-sectional shape and is elongated in the vertical direction, and the distal end portion is formed in a substantially spherical shape. 5. A rod material that is rotatably held in a middle portion on the outer peripheral surface side of the guide material, and that is bent or curved so that the tip portion faces in a direction opposite to the tip portion of the guide material. It is an endoscope inserter of any one of Claim 5 or Claim 10.

  According to the eleventh aspect of the present invention, the leading end portion of the guide member whose base end portion is held in the middle portion of the guide material faces in the direction opposite to the leading end portion of the guide member. With this configuration, when the guide material is pushed in, the guide material can inevitably be rotated in the reverse direction and deployed. In addition, the substantially cylindrical endoscope main body can be more smoothly held in the guide material having a substantially semicircular cross section and led out from the guide material into the water pipe.

  The invention according to claim 12 includes an attachment portion provided at a lower end portion of the insertion rod inserted in a watertight state from an upper portion of the vertical pipe portion branched upward from the water distribution pipe, and a lower end portion of the attachment portion includes: An endoscope inserter characterized in that a blade portion for scraping off rust humps adhering to the inside of a tube is provided, and the attachment portion is cylindrical, and an endoscope main body can be accommodated therein. .

  According to invention of Claim 12, the rust hump in a vertical pipe can be removed. In addition, since the endoscope main body can be accommodated and is not arranged separately, a compact and simple operation is possible.

  In the invention according to claim 13, the endoscope main body introduced in a watertight state from the upper part of the vertical pipe part branched upward from the water distribution pipe is guided downward along the vertical pipe part by the endoscope holder. The endoscope main body and the endoscope holder in a state in which water distribution to the upper opening of the vertical pipe portion is stopped by a repair valve, a fire hydrant or a saddle hydrant of the vertical pipe portion And installing the lower end of the cylindrical body in a watertight state in the upper opening of the vertical tube part, after releasing the water stop, and extending upward from the upper end of the cylindrical body to the watertight state. A step of pushing the insertion rod provided at the lower end portion downward and locking the upper end portion of the insertion rod and the upper end portion of the cylindrical body, the upper end of the insertion rod Connecting the lower end of the extension rod having the same cross-sectional shape as the insertion rod to the insertion portion, locking the insertion rod After releasing, an endoscope insertion method characterized by comprising the step of pushing the build-up of the rod downwardly.

  According to invention of Claim 13, the endoscope for observing the condition in a pipe | tube can be inserted in a watertight state with a constant water through the vertical pipe part provided in the water pipe. In addition, the bar for pushing the endoscope holder into the water pipe is composed of an insertion bar and one or more extension bars. Therefore, by sequentially connecting the insertion rod and the extension rod while pushing them into the vertical tube portion, it is possible to easily work in a narrow space such as a valve chamber. Moreover, by restricting the insertion rod from dropping below a predetermined amount with respect to the main body until the extension rod is connected, the operation can be performed while preventing the insertion rod from dropping into the vertical tube.

  The invention according to claim 14 is a step of locking the upper end portion of the extension rod and the upper end portion of the cylindrical body, and the lower end portion of another extension rod is connected to the upper end portion of the extension rod. The endoscope insertion method according to claim 13, further comprising a step of pushing the other extension rod downward after releasing the locking of the extension rod.

  According to the fourteenth aspect of the present invention, the extension bars can be connected to each other in the same manner as the connection work of the extension bars to the insertion bar. Therefore, the endoscope can be inserted while preventing the extension rod from falling into the vertical tube.

  Further, in the invention described in claim 15, prior to the insertion of the endoscope holder, a rust hump removing tool is attached to the lower end portion of the insertion rod to open and close the pipe line provided on the outer peripheral portion of the cylindrical body. The endoscope insertion method according to claim 13 or 14, further comprising a step of removing rust humps in the vertical pipe portion while opening the valve and draining to the outside.

  According to the invention described in claim 15, even if there is a rust hump in the vertical tube and the endoscope cannot be inserted as it is, the insertion of the endoscope can be performed by removing the rust hump first. It becomes possible.

By the way, the endoscope inserter can be configured as follows.
First, in the case of the endoscope inserter according to claim 10 and claim 12, the insertion rod and the one or more extension rods may be made of a common single bar.

  In addition, a flange provided on the lower end of the main body is overlapped with a flange such as a repair valve, a fire hydrant, or a saddle water faucet of the vertical pipe portion, and is detachably fixed with bolts. An endoscope inserter in which the insertion hole of the bolt is formed as a long hole in the radial direction in the flange of the main body so as to be compatible with the pipe portion may be used.

  The insertion rod and the extension rod are formed of a round bar having the same diameter, and a plurality of the extension rods having a plurality of types of lengths can be connected to each other. An endoscope inserter may be used.

  In addition, a horizontal bar is detachably provided on the top of the uppermost extension bar or insertion bar, and a turnbuckle is installed between the horizontal bar and the main body, whereby the insertion bar with respect to the main body is provided. The endoscope inserter described above may be positioned.

  Further, the endoscope insertion device may be characterized in that the main body includes a drain pipe on an outer peripheral portion, and an opening / closing valve is provided in a middle portion of the drain pipe. In this case, the peeled rust hump can be discharged to the outside by opening this on-off valve and removing the rust hump while draining to the outside. In addition, the water in the pipe can be collected from the drain pipe to perform a water quality test.

  Further, the endoscope holder (rust hump removing tool) for removing rust humps is a cylindrical mounting portion provided integrally or detachably on the lower end portion of the insertion rod, and a removal provided below the mounting portion. It can also be set as the rust hump removal tool characterized by providing a material.

  Here, the attachment portion of the rust hump removal tool and the attachment portion of the endoscope holder for inserting the endoscope into the water pipe are configured to be detachable from the distal end portion of the insertion rod, and both attachment portions are provided. A common configuration is preferable. Thereby, the main body, the insertion rod, the extension rod, and the like can be made common by replacing only the member attached to the distal end portion of the insertion rod.

Examples of the removing material include the following three types.
The first removal material is composed of leg portions that extend vertically downward from a plurality of locations in the circumferential direction of the cylindrical attachment portion. The lower end surface of each leg portion is an inclined surface that inclines radially outward as it goes downward, and functions as a blade portion for scraping off the rust hump. Furthermore, the leg portion is typically configured as follows. That is, the leg portions of the rust hump removing tool are provided at equal intervals in the circumferential direction on the cylindrical mounting portion, and the inner and outer peripheral surfaces of each leg portion are formed continuously with the inner and outer peripheral surfaces of the mounting portion. Furthermore, each leg is formed in the same size and shape. In the case of this removing material, the rust hump can be removed by moving up and down and rotating in the vertical tube.

  The second removing material is configured such that a circular plate is horizontally held at the lower end portion of the leg portion that extends vertically downward from a plurality of locations in the circumferential direction of the cylindrical mounting portion. The outer peripheral surface of this disc is an inclined surface that inclines radially outward as it goes upward, and functions as a blade for scraping off the rust hump. The leg portions are typically provided on the cylindrical attachment portion at equal intervals in the circumferential direction, and the inner and outer peripheral surfaces thereof are formed continuously with the inner and outer peripheral surfaces of the attachment portion. Further, the disk has a larger diameter than the outer diameter of the mounting portion, and can be provided eccentrically from the mounting portion if desired. In the case of this removing material, rust humps can be removed by moving up and down in the vertical pipe.

  The third removing member is formed by extending the outer peripheral wall of the lower end portion of the cylindrical attachment portion outwardly in a circular arc shape in a strip shape by substantially half a circumference. And especially the front-end | tip part of this strip | belt-shaped extension part functions as a blade part for scraping off a rust hump. In addition, the inner peripheral surface of the lower end part of the attachment part is formed in the inclined surface extended to radial direction outer side as it goes below including the said strip | belt-shaped extension part. Further, the inner peripheral surface on the front end side of the belt-like extension part is formed as an inclined surface that inclines outward as it goes to the front end side. In the case of this removing material, it is sufficient to rotate in the extending direction of the strip-shaped extending portion in a vertical tube with rust. Thereby, the rust hump in a vertical pipe can be removed, and a larger-diameter hole can be ensured than an attachment part.

  In any of the removing materials, the endoscope main body can be accommodated and used in the cylindrical attachment portion of the rust hump removing tool with its head directed downward. The cable from the endoscope main body is led out to the outside in a watertight state and connected to the monitor. Thereby, while confirming with a monitor, a rust hump removal tool can be inserted in a vertical pipe, and a rust hump removal work can be performed. Further, during the rust hump removing operation, the peeled rust hump can be removed to the outside by opening the on-off valve of the drain pipe and draining from the upper part of the vertical pipe. Even during this work, the opening degree of the on-off valve can be adjusted while checking the situation on the monitor.

  In addition, the cylindrical attachment part of the rust hump removing tool can open up and down, and can form a slit or a protruding part radially outward from the lower end part upward. As a result, the peeled rust hump can be easily guided upward.

  According to the endoscope inserter and the endoscope insertion method of the present invention, it is more compact and the work in the valve chamber (pit) is facilitated. In addition, an endoscope inserter that can easily guide the endoscope main body and a rust hump removing tool that can remove rust humps in the vertical tube can be provided.

  Hereinafter, an embodiment of an endoscope inserter of the present invention will be described in more detail with reference to the drawings.

  FIG. 1 is a longitudinal sectional view in front view showing an embodiment of an endoscope inserter of the present invention. FIG. 2 is a front view showing a state in which the endoscope inserter of FIG. 1 is attached to a vertical tube. Further, FIG. 3 is a perspective view showing a state in which the endoscope inserter of FIG. 1 is mounted on a vertical tube.

  The endoscope inserter of a present Example introduce | transduces an endoscope in the water pipe 1 in order to observe the condition in the water supply water pipe 1 with a continuous water. In the middle of the water distribution pipe 1 made of a horizontal pipe, a vertical pipe 3 is provided as appropriate by branching upward. A fire hydrant H (see FIG. 14) is connected to the vertical pipe 3 through, for example, a repair valve 5 or the like. The endoscope inserter of the present embodiment is used by being attached to the vertical tube 3 through the repair valve 5 and the fire hydrant H.

  By the way, as shown in FIG. 2 and FIG. 14, the vertical pipe part (the vertical pipe 3 provided with the repair valve 5 etc.) may be accommodated in a narrow valve chamber (pit) P provided in the basement. . The valve chamber P has a height of about 2 m, and the height from the upper end of the vertical tube 3 to the ceiling is only about 50 cm, for example. The endoscope inserter of the present embodiment is configured to be usable even in a narrow place such as the valve chamber P.

  As shown in FIG. 2, the endoscope inserter of this embodiment is attached to the vertical tube 3 via the repair valve 5. The repair valve 5 may be a slide type gate valve or the like, but is a ball type repair valve 5 in the illustrated example.

  As shown in FIGS. 6 and 7, the ball type repair valve 5 is provided with a pipe line 9 penetrating through the valve box 7 in the vertical direction, and a ball 11 is rotatably disposed in the middle of the pipe line 9. It becomes. A through hole 13 is formed in the ball 11 in the diameter direction. The diameter of the through hole 13 corresponds to the diameter of the conduit 9. With such a configuration, the direction of the through hole 13 of the ball 11 is arranged vertically along the conduit 9 of the valve box 7 by the lever 15 for opening and closing the ball 11 (FIG. 7), or the tube The repair valve 5 can be opened and closed depending on whether it is arranged in a lateral direction perpendicular to the passage 9 (FIG. 6).

  The valve box 7 of the ball type repair valve 5 is formed with flanges 19 and 17 at both upper and lower ends thereof. The lower flange 17 is connected to the flange 4 at the upper end of the vertical tube 3. On the other hand, the upper flange 19 is normally connected to a fire hydrant H as shown in FIG. 14 before installation of the endoscope inserter of the present embodiment. The endoscope inserter of the present embodiment is attached to the upper flange 19 of the ball type repair valve 5 from which the fire hydrant H has been removed instead of the fire hydrant H.

  As shown in FIG. 1, the endoscope inserter of the present embodiment includes a main body 21 that is detachably attached to an upper portion of a vertical tube portion, and an insertion rod 47 that is inserted into the main body 21 so as to be vertically movable in a watertight state. The main part includes an endoscope holder 61 provided at a lower end portion of the insertion rod 47 and extension rods 137, 137,... Detachably connected to the insertion rod 47.

  The main body 21 has a cylindrical shape that opens downward. In the present embodiment, the main body 21 has a cylindrical shape. A flange 23 is provided at the lower end of the cylindrical main body 21. Four through holes 25 are formed in the flange 23 at equal intervals in the circumferential direction and on concentric circles. In the present embodiment, each through hole 25 is a long hole along the radial direction of the flange 23 (see FIG. 3).

  The upper end portion of the cylindrical main body 21 is closed by the upper wall 27. A cylindrical support portion 29 is formed at the center of the upper wall 27 so as to protrude upward in a boss shape. As shown in FIG. 3, the support portion 29 is formed with a locking groove 31 that opens upward and is cut out along the radial direction. Both end portions of the locking groove 31 are open on the outer peripheral surface of the support portion 29.

  A circular through hole 33 is formed in the center of the upper wall 27 of the cylindrical main body 21 so as to penetrate the support portion 29 along the vertical direction. As shown in FIG. 1, an annular groove 34 is formed on the peripheral surface of the through hole 33, and an O-ring 35 is disposed in the annular groove 34. In this embodiment, two O-rings 35 and 35 are horizontally provided so as to be spaced apart from each other in the vertical direction.

  Further, as shown in FIG. 3, two inverted U-shaped locking members 37 are provided on the upper wall 27 of the cylindrical main body 21 adjacent to the support portion 29. Specifically, the locking members 37 and 37 are respectively provided at both ends in the radial direction of the support portion 29 so that both end portions of the locking groove 31 of the support portion 29 and the annular inside of the locking device 37 are continuous. ing.

  Further, a branch cylinder 39 is provided at the upper end of the cylindrical main body 21 so as to branch obliquely upward from the peripheral side surface. The opening angle between the branch cylinder 39 and the main body 21, that is, the intersection angle between the axis of the branch cylinder 39 and the axis of the main body 21 can be arbitrarily set, but is 45 degrees in this embodiment. A flange 41 is provided at the tip (upper end) of the branch cylinder 39.

  The main body 21 is provided with a drain pipe 43 that extends horizontally at a position facing the branch cylinder 39 in the radial direction. In the middle of the drain pipe 43, a lever type on-off valve 45 for opening and closing the pipe line is provided. The on-off valve 45 of the present embodiment is configured such that the opening degree can be adjusted.

  As shown in FIG. 1, the insertion rod 47 is inserted from the through hole 33 of the upper wall 27 of the main body 21. In the present embodiment, the insertion rod 47 is formed in an elongated round bar shape, and the O-ring 35 allows the insertion rod 47 to move up and down while maintaining a watertight state with respect to the main body 21. That is, the insertion rod 47 is provided so as to be able to advance and retreat up and down with respect to the main body 21 in a state in which water leakage to the outside from the gap with the main body 21 is prevented.

  In the center of the upper end surface of the insertion bar 47, a round hole-shaped recess 49 that opens upward is formed. Further, one mounting hole 51 is formed along the radial direction from the outer peripheral surface of the insertion rod 47 so as to open into the recess 49. Further, a circular stop hole 53 that penetrates in the radial direction is formed in the insertion rod 47 at a position slightly below the bottom surface of the recess 49. The retaining hole 53 is formed at a position 90 degrees apart from the mounting hole 51 in the circumferential direction.

  A holding portion 55 to which the endoscope holder 61 is connected is provided at the lower end portion of the insertion rod 47. The holding portion 55 has a cylindrical shape that opens downward. The holding portion 55 is arranged so that its axis is along the axis of the insertion rod 47, that is, the axis is along the vertical direction, and is fixed to the lower end of the insertion rod 47. Yes. In some cases, the insertion rod 47 and the holding portion 55 may be fixed eccentrically. For example, the lower end portion of the insertion rod 47 is fixed to the upper end portion of the peripheral side wall of the cylindrical holding portion 55 that is opened up and down. You may make it.

  A pin hole 57 is formed in the peripheral side wall of the holding portion 55 so as to penetrate along the front-rear direction (radial direction). In the present embodiment, four pin holes 57 are formed on the peripheral side wall of the holding portion 55, and the two pin holes 57, 57 are arranged coaxially. In addition, the pair of pin holes 57A arranged on one coaxial axis and the pair of pin holes 57B arranged on the other coaxial axis are shifted in the horizontal direction and are also shifted in the vertical direction. .

  Further, an upper and lower cutout 59 is formed at the upper end of the peripheral side wall of the holding portion 55 so as to communicate between the inside and the outside. The cable C of the endoscope is introduced into the holding part 55 through the notch 59. In the present embodiment, the endoscope holder 61 is detachably attached to the holding portion 55 of the insertion rod 47.

FIG. 4 is a perspective view showing the endoscope holder 61 of the present embodiment.
The endoscope holder 61 of this embodiment includes an attachment portion 63 that is detachably connected to the lower end portion of the insertion rod 47, a guide material 71 that is rotatably held by the attachment portion 63, and the guide material 71. A guide member 95 that is rotatably held is provided in the main part.

  The attachment portion 63 has a cylindrical shape that opens in the vertical direction, and has an inner diameter into which the holding portion 55 is fitted. In addition, the outer surfaces of the lower end portions of the front and rear of the attachment portion 63 are formed by cutting out into rectangular flat vertical surfaces 65, respectively.

  Furthermore, the center hole of the attachment portion 63 is a stepped hole having a large diameter on the upper side. Accordingly, when the holding portion 55 is inserted into the attachment portion 63, the lower end portion of the holding portion 55 comes into contact with a step portion (not shown) inside the attachment portion 63, whereby the attachment portion 63 is positioned in the vertical direction. . In this positioned state, the pin 101 may be inserted into the attachment portion 63 and the holding portion 55 as will be described later.

  Further, the cylindrical attachment portion 63 is integrally provided with a leg portion 67 extending downward. In this embodiment, two rod-like leg portions 67 are provided on the right side of the attachment portion 63 so as to be separated from each other in the front-rear direction. The inner and outer surfaces of the leg portion 67 are continuous with the inner and outer surfaces of the attachment portion 63.

  Further, four pin holes 69 are formed in the attachment portion 63 so as to penetrate along the front-rear direction (radial direction). Each pin hole 69 is formed at a position corresponding to each pin hole 57 of the holding portion 55 when the holding portion 55 of the insertion rod 47 is fitted into the mounting portion 63.

  The guide member 71 has a substantially semicircular cross section and is elongated, in other words, is formed in a groove shape having a semicircular cross section. And the front-end | tip part 73 of the guide material 71 is formed in the spherical shape of about 1/4, and is formed so that a width | variety may become thin as it goes to a front end side. Specifically, the tip portion 73 of the guide material 71 is formed in the tip shape of a spoon.

  Moreover, the longitudinal center part of the both ends of the opening of the guide material 71 is formed in a gentle arc shape. The recess 75 is formed so that the guide material 71 does not come into contact with the bent portion of the vertical tube 3 and the horizontal tube 1 when the guide material 71 enters the horizontal tube (water pipe) 1 from the vertical tube portion. . This is particularly effective for the water distribution pipe 1 having a small pipe diameter.

  Further, an elongated through hole 77 is formed in the longitudinal center of the guide member 71 along the longitudinal direction at the center in the width direction. As will be described later, the through-hole 77 is formed so that the cylindrical portion 97 of the guide member 95 is rotatably arranged and a part of the guide member 95 does not hit the guide member 71. Further, the water in the water distribution pipe 1 is formed to reduce the water pressure applied to the guide material 71 by passing through the through hole 77.

  The base end portion of the guide material 71 is formed in a trifurcated shape. Among the three crotch portions, the central piece 79 is formed longer to the proximal end side than the side pieces 83, 83 sandwiching the central piece 79, and a cylindrical portion 81 whose axis is along the front-rear direction is formed at the end portion. Has been. In addition, the width dimension (front-rear dimension) of the central piece 79 is slightly smaller than the dimension between the leg portions 67 and 67 of the mounting portion 63.

  And the edge parts 83a and 83a of each side piece 83 and 83 are inclined and formed so that it may go upwards as it goes to the right side from the left side. Further, the outer surfaces of the side pieces 83, 83 are formed into flat vertical surfaces by cutting the curved surfaces. A band-shaped reinforcing material (not shown) that is curved along the width direction is fixed to the outer peripheral surface of the base portion of the trifurcated portion by welding.

  The guide member 71 is rotatably attached to the attachment portion 63 so that the groove-shaped opening surface is directed to the left side in a state where the longitudinal direction thereof is arranged substantially along the vertical direction. In the present embodiment, a pin 85 is provided along the front-rear direction so as to bridge between the leg portions 67, 67 at the upper ends of the leg portions 67, 67 of the attachment portion 63. Then, the pin 85 is passed through the cylindrical portion 81 of the guide material 71, so that the guide material 71 is rotatably held around the base end portion, that is, around the pin 85 by the attachment portion 63. Here, the state in which the guide material 71 is held by the attachment portion 63 and is suspended in the air is in a suspended state, the longitudinal direction thereof is substantially along the vertical direction, and the groove-shaped opening surface is directed to the left side. ing. In addition, the outer peripheral surface of the guide member 71 is in contact with the leg portion 67 in a suspended state. Thereby, the guide material 71 cannot be rotated to the right side from the suspended state.

  A long and thin plate-shaped connecting member 87 is provided so as to connect the side pieces 83 and 83 at the base end portion of the guide member 71 and the mounting portion 63. One end portion of the connecting member 87 is rotatably attached to the vertical surface 65 of the attachment portion 63 with a screw 89. In addition, a long hole 91 extending in the longitudinal direction is formed through the other end of the connecting member 87.

  The other end of the connecting member 87 is overlapped with the outer surface of each side piece 83, 83 of the guide member 71, and the side piece 83, 83 of the guide member 71 is passed through the elongated hole 91. A screw 93 is screwed into. A screw 93 screwed into the side piece 83 is movable along the long hole 91. As described above, the connecting members 87 are disposed at both ends in the radial direction of the mounting portion 63 and are provided so as to sandwich the guide member 71 therebetween. When the guide material 71 hangs down, the screw 93 is disposed at the lower end portion of the elongated hole 91, and when the guide material 71 is rotated around the proximal end portion (FIG. 4), the screw 93 is elongated at the elongated hole 91. It is arranged at the upper end part.

  The guide member 95 of the present embodiment has a round bar curved in a bow shape. A cylindrical portion 97 that opens in the front-rear direction is integrally provided at the base end portion of the guide member 95. The longitudinal dimension (thickness) of the cylindrical portion 97 is slightly smaller than the width of the through hole 77 of the guide material 71. Then, in a state where the round bar 99 is passed through the cylindrical part 97 and the cylindrical part 97 is disposed in the through hole 77 of the guide material 71, the round bar 99 is formed on the outer peripheral surface side of the guide material 71. Is fixed by welding so as to cross in the width direction (front-rear direction). Thereby, the guide member 95 is held by the guide member 71 so as to be rotatable around the base end portion with respect to the guide member 71. At this time, the guide member 95 is attached to the guide member 71 so that the tip end portion 95a faces the right side in a suspended state, and the tip end portion 95a of the guide member 95 is directed in the opposite direction to the tip end portion 73 of the guide member 71. ing. Further, the cylindrical portion 97 is disposed in the through hole 77 of the guide material 71, so that the cylindrical portion 97 is restricted from moving back and forth with respect to the round bar 99, and as a result, the guiding material 95 is restricted from moving back and forth.

  When the guide member 95 is in the suspended state, the tip end portion 95a extends downward from the leg portion 67 and the tip end of the guide member 71 in the suspended state. Further, when the guide member 95 rotates around the base end portion, the tip end portion 95 a is configured to pass between the leg portions 67 and 67 of the attachment portion 63.

  The endoscope holder 61 of the present embodiment is fixed to the insertion rod 47 by the pin 101 with the holding portion 55 of the insertion rod 47 fitted into the attachment portion 63. Specifically, the holding portion 55 is fitted into the mounting portion 63, and the pin hole 69 of the mounting portion 63 and the pin hole 57 of the holding portion 55 are positioned in the circumferential direction so as to coincide with the front-rear direction. The pin 101 is inserted into each of the pin holes 69 and 57 along the front-rear direction.

  At both ends of the pin 101, annular grooves 103 are formed along the circumferential direction. In a state where the pin 101 is fitted into the mounting portion 63 and the holding portion 55, both end portions of the pin 101 are located outside the mounting portion 63 so that the annular groove 103 is disposed slightly outside the outer peripheral surface of the mounting portion 63. It is extended. Then, the locking member 105 is fitted in the annular grooves 103 at both ends of the pin 101 along the outer peripheral surface of the mounting portion 63, so that the axial movement of the pin 101 is restricted, and as a result, the mounting portion 63 holds the holding portion 55. Is fixed. In this embodiment, an E-ring is used as the locking member 105. Further, in a state in which the holding portion 55 is fixed to the attachment portion 63, a part of the notch 59 of the holding portion 55 extends upward from the attachment portion 63, and will be described below through this notch 59. An endoscope cable C is introduced.

  As described above, the endoscope holder 61 provided on the insertion rod 47 is accommodated in the main body 21 and pulled up to the upper end of the main body 21 as shown in FIG. It does not extend downward from the main body 21.

  By the way, an endoscope main body S on which a camera is mounted is arranged in advance on the guide member 71 of the endoscope holder 61 attached to the insertion rod 47 with its head facing downward. In the present embodiment, the endoscope main body S is disposed at the center in the longitudinal direction of the guide material 71 and is disposed at a position where the through hole 77 is hidden. The cable C of the endoscope is introduced into the main body 21 via a mounting plate 107 provided at the distal end portion of the branch tube 39.

  Four bolts 109 are erected on the flange 41 of the branch cylinder 39 perpendicularly to the upper surface of the flange 41 at equal intervals in the circumferential direction. A disc-shaped mounting plate 107 is overlaid on the flange 41 of the branch cylinder 39 provided with the bolt 109, and a nut 110 is screwed into the bolt 109 to fix the mounting plate 107 to the branch cylinder 39. A sealing material 111 is disposed between the flange 41 of the branch cylinder 39 and the mounting plate 107.

FIG. 5 is a longitudinal sectional view showing the central portion of the mounting plate 107.
A stepped hole is formed in the center of the mounting plate 107 so as to penetrate in the thickness direction. The lower small-diameter hole 113 is slightly larger in diameter than the outer diameter of the endoscope cable C inserted into the main body 21. A packing 116 is accommodated in the upper large-diameter hole 115, and the cable C of the endoscope is passed through the packing 116 and introduced into the main body 21.

  The packing 116 according to the present embodiment includes a plurality of sealing materials 117. Each sealing material 117 has the same shape and is made of synthetic resin. Further, each sealing material 117 is formed in an annular shape with a V-shaped cross section, and the cable C of the endoscope is passed through the hole in the center. Each sealing material 117 is cut by being obliquely cut into a part in the circumferential direction, and each sealing material 117 can be attached and detached from the outer peripheral surface of the cable C by using this cutting.

Each sealing material 117 is overlapped with its V-shaped opening facing downward. In addition, the direction of the said diagonal cut is made into the reverse direction in each sealing material 117 adjacent up and down.
Specifically, in FIG. 5, the three sealing materials 117A at the upper and lower end portions and the central portion are provided with cuts 117a toward the lower right, but the two sealing materials 117B between them are directed to the upper right. A cut is made in the direction. In the illustrated example, the notches 117a of the three sealing materials 117A at the upper and lower end portions and the central portion and the notches of the two sealing materials 117B between them are arranged to face each other in the diametrical direction. The notch is not shown in FIG.

  Then, adapters 119 and 121 are overlapped on the upper and lower end portions of the seal material 117 thus overlapped. The lower adapter 119 is an annular shape having substantially the same diameter as the sealing material 117, and has a circular shape with a cross-sectional shape in which a lower end surface is formed in a horizontal plane and an upper end portion protrudes upward in a mountain shape. The V-shaped groove of the lowermost seal material 117 is disposed in the upward projecting portion. On the other hand, the upper adapter 121 is an annular shape having substantially the same diameter as the sealing material 117, and has an annular shape with a cross-sectional shape in which an upper end surface is formed in a horizontal plane and a lower end portion is recessed in a mountain shape. The V-shaped convex part of the uppermost sealing material 117 is disposed in this upward concave part.

  In this way, the superposed sealing materials 117, 117,... In which the adapters 119, 121 are arranged above and below are formed into a cylindrical shape as a whole and are held in the large-diameter hole 115 of the mounting plate 107. Then, the cable C is inserted into the central hole of the sealing material 117, and the sealing material 117 is positioned and held by the stepped cylindrical packing presser 123 disposed on the mounting plate 107. In this state, the space between the inner peripheral surface of the mounting plate 107 and the outer peripheral surface of the cable C is maintained in a watertight state, and the cable C can move up and down with respect to the mounting plate 107. The packing presser 123 is fixed to the mounting plate 107 with screws 124.

  The cable C introduced into the main body 21 is passed from the notch 59 of the holding portion 55 to each central hole of the holding portion 55 and the attachment portion 63. At this time, the cable C is positioned by passing the cable C between the pin 101 and the inner peripheral surface of the holding portion 55. As will be described later, when the endoscope main body is advanced into the water pipe 1, the cable C is also sent into the water pipe 1. At this time, in order to insert the cable C from the vertical pipe 3 to the horizontal pipe (distribution pipe) 1, it is necessary to bend the cable C. Is preferred. In the present embodiment, for example, when the endoscope main body S is fed to the left side, the cable C is positioned so as to pass through the right side of the holding portion 55 as much as possible.

  Note that the endoscope cable C is wound around the drum 125 outside the main body 21, and a liquid crystal screen 127 for displaying an image from the endoscope main body S is provided at an end thereof (FIG. 2). .

  Next, a procedure for sending the endoscope into the water distribution pipe 1 with constant water using the endoscope inserter of the present embodiment will be described. FIG. 6 is a front sectional view showing a state in which the endoscope inserter of the present embodiment is attached to the longitudinal tube 3.

  First, in the state of FIG. 14, the repair valve 5 is closed, the vertical pipe 3 is stopped, and the fire hydrant H is removed. Then, as shown in FIG. 6, the endoscope inserter of this embodiment is attached to the repair valve 5.

  Specifically, the endoscope inserter in which the endoscope is set on the main body 21 has the flange 23 of the main body 21 superimposed on the flange 19 on the upper side of the repair valve 5, and the repair valve by the bolt 129 and the nut 131. The main body 21 is fixed to 5. At this time, a sealing material 133 is disposed between the flange 19 of the repair valve 5 and the flange 23 of the main body 21 and is fixed in a watertight manner. Further, the on-off valve 45 of the drain pipe 43 of the main body 21 is closed.

  By the way, the diameter of the flange 19 on the upper side of the repair valve 5 may be different due to the difference in the outer diameter of the vertical pipe 3. For example, the vertical pipe 3 includes types such as a diameter of φ75 mm and φ100 mm. However, in the present embodiment, the elongated hole-like through hole 25 is formed in the flange 23 of the main body 21 so that the diameter of the flange 19 on the upper side of the repair valve 5 is in a certain range such as φ75 to φ100, for example. Can respond.

  After fixing the main body 21 to the repair valve 5, the repair valve 5 is opened. Thereby, water enters the main body 21 from the water distribution pipe 1 through the repair valve 5, and the main body 21 is filled with water. Note that an O-ring 35 is provided between the upper wall 27 of the main body 21 and the insertion rod 47, and a packing 116 is provided between the branch cylinder 39 and the cable C. Watertightness is maintained and water does not leak outside.

  Then, with the repair valve 5 opened, the insertion rod 47 is pushed downward into the main body 21. For example, when the endoscope is to be sent to the upstream side (left side in FIG. 6) of the water distribution pipe 1, the insertion rod 47 is pushed straight into the main body 21 with the distal end portion 73 of the guide material 71 facing the left side. Just go. At this time, by placing a mark on the insertion rod 47 or the like so that the orientation of the guide material 71 can be grasped, even if the insertion rod 47 rotates in the circumferential direction during the pushing operation of the insertion rod 47, the circumferential positioning is performed. It can be done easily. By pushing the insertion rod 47, the endoscope holder 61 and the endoscope main body S provided at the lower end of the insertion rod 47 are also fed to the water pipe 1 side. Further, when the insertion rod 47 is pushed in, the endoscope cable C is also fed into the main body 21.

  When the insertion rod 47 is pushed in and the upper end portion of the insertion rod 47 reaches the upper end portion of the main body 21, as shown in FIG. 3, a pin 135 is inserted from the locking tool 37 of the main body 21, and the retaining hole of the insertion rod 47 is inserted. 53. When the pin 135 is inserted into the retaining hole 53 of the insertion rod 47, the insertion rod 47 is restricted from moving up and down relative to the main body 21, and is prevented from falling into the main body 21. Thus, in a state where the insertion rod 47 is locked to the main body 21, the concave portion 49 and the mounting hole 51 of the insertion rod 47 are disposed above the support portion 29 of the main body 21. Then, in such a state that the insertion bar 47 is locked to the main body 21, the extension bar 137 is connected to the upper end portion of the insertion bar 47.

  The extension rod 137 has a round bar shape having the same diameter as that of the insertion rod 47, and a small-diameter insertion portion 139 is formed at the lower end thereof. The insertion portion 139 has an outer diameter that can be fitted into the recess 49 of the insertion rod 47 and has an axial dimension that is the same as or slightly shorter than the depth of the recess 49. Further, a screw hole 141 is formed in the insertion portion 139 so as to penetrate in the radial direction. Further, in the same manner as the upper end portion of the insertion rod 47, a recess portion, a mounting hole that opens to the recess portion, and a stop hole through which the pin 135 is passed are formed at the upper end portion of the extension rod 137.

When the extension rod 137 is connected to the insertion rod 47, the insertion portion 139 of the extension rod 137 is fitted into the recess 49 of the insertion rod 47. Then, the screw 143 is screwed into the screw hole 141 of the insertion portion 139 from the mounting hole 51 of the insertion rod 47. In this embodiment, a hexagon socket set screw 143 having no head is used, and when the screw 143 is screwed in, the base end portion of the screw 143 does not protrude from the outer peripheral surface of the insertion rod 47 and from the recess 49. It protrudes radially outward and is disposed in the mounting hole 51.
Thereby, when the extension rod 137 is connected to the insertion rod 47, the head of the screw 143 does not protrude from the outer peripheral surface of the insertion rod 47. Accordingly, when the insertion rod 47 and the extension rod 137 are pushed in, the connecting portion of the insertion rod 47 and the extension rod 137 is smoothly moved up and down without being caught by the O-ring 35 of the upper wall 27 of the main body 21. be able to.

  After the insertion rod 47 and the extension rod 137 are connected, the pin 135 is pulled out and the locking of the main body 21 and the insertion rod 47 is released. Then, the insertion rod 47 is further pushed downward through the extension rod 137. If the upper end portion of the extension rod 137 connected to the insertion rod 47 reaches the upper end portion of the main body 21, the pin 135 is inserted into the extension rod 137 via the locking member 37 of the main body 21 as described above. The extension rod 137 is locked to the main body 21 by inserting into the stop hole. Then, another extension rod 137 is connected to the extension rod 137.

  In this manner, the insertion rod 47 is pushed downward while sequentially connecting the insertion rod 47 to the insertion rod 47. Since the length of the vertical pipe portion varies depending on the location, and the height of the valve chamber P also varies depending on the location, it is preferable to prepare the extension rod 137 having a different length. In this embodiment, two types of extension rods 137 having different lengths are used, and a plurality of extension rods 137 are used, so that it is possible to cope with different lengths of the vertical pipe portion.

  FIG. 7 is a diagram illustrating a state in which the guide material 95 is in contact with the bottom of the water distribution pipe 1.

  When the rod 137 is pushed downward while being connected to the insertion rod 47, the distal end portion 95 a of the guide member 95 of the endoscope holder 61 eventually comes into contact with the tube bottom of the water distribution pipe 1. At this time, since the guide member 95 is curved, when the distal end portion 95a comes into contact with the tube bottom of the water distribution pipe 1 and is further pushed down (to the tube bottom side), the distal end portion 95a is brought to the tube bottom. And the guide member 95 rotates around the base end.

  The guide member 71 is pushed out in the axial direction of the water distribution pipe 1 by the guide member 95 rotating around the base end portion. That is, the guide material 71 also rotates around the base end portion, and the distal end portion 73 of the guide material 71 moves to the left side. As described above, the distal end portion 73 of the guide material 71 and the distal end portion 95a of the guide material 95 are moved away from each other, and the guide material 71 and the guide material 95 are developed in a “human” shape.

  FIG. 8 is a diagram illustrating a state in which the leg portion 67 of the endoscope holder 61 has reached the tube bottom and the endoscope main body S is being fed into the water distribution tube 1.

  When the insertion rod 47 is pushed further downward from the state of FIG. 7, the lower end portion of the leg portion 67 of the attachment portion 63 comes into contact with the tube bottom. When the leg portion 67 of the attachment portion 63 is in contact with the tube bottom, the insertion rod 47 cannot be pushed further. In this state, the outer surface of the distal end portion 73 of the guide material 71 is also in contact with the tube bottom, and the distal end of the guide material 71 is disposed in a horizontal state substantially parallel to the tube bottom. In addition, each side piece 83, 83 at the base end portion of the guide material 71 has an inclined end portion 83 a that is in contact with the lower end surface of the attachment portion 63. Further, the leading end portion 95 a of the guide member 95 extends to the right side through the leg portions 67 and 67 of the mounting portion 63. In this way, the vertical movement of the insertion rod 47 (the extension rod 137) is restricted in a state where the leg portion 67 of the attachment portion 63 has reached the tube bottom.

FIG. 9 is a perspective view showing a state in which the vertical movement of the insertion rod (additional rod) is restricted.
In this embodiment, a bar-shaped handle 145 having a semicircular cross section is horizontally fixed to the upper end of the uppermost extension bar 137 connected to the insertion bar 47. An annular retaining ring 147 is fixed to both ends of the handle 145 at the lower part thereof. The retaining ring 147 is fixed to the handle 145 so that its axial direction is orthogonal to the longitudinal direction of the handle 145.

  Similarly to the lower end portion of the add-on rod 137, an insertion portion 146 that protrudes downward and can be fitted into the recess of the add-on rod 137 and the recess of the add-on rod 137 is formed at the center in the longitudinal direction of the handle 145. Has been. The insertion portion 146 has a screw hole along the radial direction. Accordingly, the handle 145 is screwed onto the uppermost extension rod 137 in the same manner as the connection between the insertion rod 47 and the extension rod 137 and the connection between the extension rods 137 and 137 (equivalent to the screw 143 in FIG. 3). ).

  The handle 145 is locked to the main body 21 by a turnbuckle 149. The turnbuckle 149 is provided with hooks 151 and 153 at both ends, and one hook 151 is a locking tool for the main body 21 used when the insertion bar 47 or the extension bar 137 is locked to the main body 21. 37. The other hook 153 is hooked on the retaining ring 147 of the handle 145, and the turnbuckle 149 main body is rotated in a direction in which the hooks 151 and 153 at both ends approach each other. Thereby, the insertion bar 47 and the extension bar 137 are locked to the main body 21, and the vertical movement of the insertion bar 47 is restricted with respect to the main body 21. In this restricted state, the endoscope holder 61 is held in the state shown in FIG. 8, that is, in a state where the leg portion 67 is in contact with the tube bottom.

  In this manner, in a state where the main body 21 and the insertion rod 47 (additional rod 137) are locked, the cable C is operated and further fed into the main body 21 while viewing the image of the endoscope main body S, and the pipe of the water distribution pipe 1 What is necessary is just to advance the endoscope main body S along a road. The video from the endoscope main body S is displayed on the liquid crystal screen 127, and the situation in the water pipe 1 can be confirmed. In addition, by connecting the recording device 155, it is possible to save the video. The endoscope main body S has a camera head mounted at the center thereof, and a plurality of LEDs for illumination are provided so as to surround the camera head.

  When the observation on the upstream side of the water pipe 1 is completed, the turnbuckle 149 is removed to release the locking of the main body 21 and the insertion rod 47 (addition bar 137), and the endoscope holder 61 is pulled up into the main body 21. The repair valve 5 may be closed. Further, after the observation on the upstream side of the water pipe 1 is completed, the insertion rod 47 may be rotated 180 degrees, and the downstream side observation may be continuously performed. When the endoscope holder 61 is lifted, it is only necessary to disassemble the connecting rod 137 and the insertion rod 47 while pulling upward while being locked to the main body 21, contrary to assembly (insertion).

  In the present embodiment, a bar inserted into the main body 21, that is, an insertion bar 47 and an extension bar 137 are composed of a plurality of bars. Thereby, the portion extending upward from the main body 21 can be reduced, and it is possible to check the situation in the water pipe 1 using the endoscope inserter even in a narrow room such as the valve chamber P. The Therefore, the endoscope inserter of the present embodiment can be used not only in the valve chamber P but also in a water pipe bridge or the like.

  Further, since the insertion rod 47 and the extension rod 137 are long and thin solid bars, they are not easily subjected to water resistance when they are pushed in, and do not require a large force. Further, when the insertion rod 47 and the extension rod 137 are connected, and when the extension rods 137 are connected to each other, the insertion rod 47 or the extension rod 137 is once locked to the main body 21, so Is prevented from falling off, and a reliable connection is possible.

  Note that when the insertion rod 47 and the extension rod 137 are pushed into the main body 21, the handle 145 may be temporarily mounted and pushed into the concave portions 49 of the rods 47 and 137.

  By the way, it is possible to remove the rust humps in the vertical pipe portion by using the endoscope inserter in the present embodiment. In particular, when the situation inside the water distribution pipe 1 is to be observed with an endoscope, the endoscope holder 61 needs to pass through the vertical pipe 3. However, when rust humps adhere to the vertical tube 3 and the opening inside the vertical tube 3 is small, the endoscope holder 61 cannot pass through the vertical tube 3, and consequently the endoscope body S is arranged. It cannot be inserted into the water pipe 1. In such a case, first, it is necessary to remove the rust hump in the vertical pipe 3. Therefore, it is possible to remove the rust humps in the vertical tube 3 by using a rust hump removing endoscope holder (rust hump removing tool) instead of the endoscope holder 61 of the above embodiment. . In addition, the rust hump removing tool of the present embodiment can be widely used for removing rust humps on the vertical pipe portion regardless of whether or not the endoscope holder 61 is inserted.

Hereinafter, a method of removing the rust hump R in the vertical pipe 3 will be described.
The endoscope inserter of the present embodiment has basically the same configuration as the endoscope inserter, except for the configuration of the endoscope holder.

FIG. 10 is a perspective view of the first rust hump removing endoscope holder (rust hump removing tool).
Similar to the endoscope holder 61, the first rust hump removing tool 161 includes a cylindrical attachment portion 163 into which the holding portion 55 of the insertion rod 47 can be fitted. The attachment portion 163 can accommodate the endoscope main body S therein. The inner upper end of the attachment portion 163 has a slightly larger diameter, and the central hole of the attachment portion 163 is a stepped hole. Accordingly, when the holding portion 55 is fitted into the attachment portion 163, the lower end portion of the holding portion 55 comes into contact with a step portion (not shown) inside the attachment portion 163, thereby positioning the attachment portion 163 in the vertical direction. . Note that the mounting portion 163 is formed with four pin holes 165, similarly to the mounting portion 63 of the endoscope holder 61.

  In addition, the mounting portion 163 is provided with four rod-like leg portions 167 extending vertically downward at equal intervals in the circumferential direction. Each leg 167 has the same length, and the inner and outer peripheral surfaces of each leg 167 are formed continuously with the inner and outer peripheral surfaces of the attachment portion 163. The lower end portion of the leg portion 167 is formed on an inclined surface that is inclined outward in the radial direction of the mounting portion 163 as it goes downward, and serves as a blade portion 169 for scraping rust humps. Further, the attachment portion 163 is formed with an elongated notch (slit) 171 penetrating inward and outward from the central portion in the axial direction (vertical direction) toward the lower end portion. In this embodiment, a notch 171 is formed between the adjacent leg portions 167 and 167 at one location. This notch 171 serves as a passage when discharging the rust humps that have been shaved off.

FIG. 11 is a cross-sectional view showing a state in which the rust hump R in the vertical tube 3 is scraped off by the first rust hump removing tool 161.
When the rust hump R in the vertical pipe 3 is removed using the first rust hump removing tool 161, the holding portion 55 of the insertion rod 47 is fitted into the mounting portion 163, and the mounting portion 163 and The holding portion 55 is fixed with the pin 101.

  The endoscope main body S is accommodated in advance in the mounting portion 163 of the first rust hump removing tool 161 with its head facing downward, and the cable C of the endoscope is the main body as in the above embodiment. 21 is introduced into the main body 21 from the branch cylinder 39. When the rust hump R is removed by the endoscope inserter of the present embodiment, the main body 21 on which the first rust hump remover 161 is set is attached to the repair valve 5 from which the fire hydrant has been removed, as in the above embodiment. Moreover, the on-off valve 45 of the drain pipe 43 of the main body 21 is opened. At this time, it is preferable that one end portion of the hose 173 is connected to the drain pipe 43 and the other end portion of the hose 173 is directed to the drainage groove or the like.

  Thus, after mounting the main body 21 on the repair valve 5, the valve of the repair valve 5 is opened. Then, while confirming the state of the inside of the vertical tube 3 with an endoscope, the first rust hump removing tool 161 is moved up and down or rotated, and the blade portion 169 scrapes off the rust hump R in the vertical tube 3. To go. The scraped rust hump R passes through the upper opening of the holding portion 55 via the outside of the attachment portion 163 and the inside of the attachment portion 163 and is discharged to the outside from the drain pipe 43 of the main body 21. In the present embodiment, the operation can be performed while adjusting the opening degree of the on-off valve 45 of the drain pipe 43. Similarly to the above embodiment, the rust hump R at the bottom of the vertical tube 3 can also be removed by connecting the insertion rod 47 to the insertion rod 47.

  After the removal of the rust humps, the first rust hump removal tool 161 may be pulled up into the main body 21 and the repair valve 5 may be closed. If it is desired to further check the condition in the water pipe 1, the endoscope holder 61 is attached to the insertion rod 47 instead of the first rust hump removing tool 161, and the endoscope is placed in the water pipe 1. Just send it in. As described above, in this embodiment, the endoscope holder 61 or the rust hump removing tool 161 can be attached to the lower end portion of the insertion rod 47 so as to be replaceable. The first rust hump removing tool 161 is effective for removing rust humps at the central portion in the vertical pipe 3.

Next, a modified example of the rust hump removing tool will be described.
FIG. 12 is a perspective view showing the second rust hump removing tool.

  Similar to the first rust hump remover 161, the second rust hump remover 175 includes a cylindrical attachment portion 177 into which the holding portion 55 of the insertion rod 47 can be fitted. Similarly to the first rust hump removing tool 161, the attachment portion 177 can accommodate the endoscope main body S, and a step portion is formed on the inner surface of the attachment portion 177. The mounting portion 177 is formed with four pin holes 179 as in the mounting portion 63 of the endoscope holder 61.

  The mounting portion 177 is provided with four leg portions 181 extending vertically downward at equal intervals in the circumferential direction. The lengths of the leg portions 181 are the same, and the inner and outer peripheral surfaces of the leg portions 181 are continuous with the inner and outer peripheral surfaces of the attachment portion 177. A disc 183 is fixed horizontally to the lower end of the leg 181. The outer peripheral surface of the disk 183 is formed as an inclined surface that inclines radially outward as it goes upward, and the outer peripheral portion is a blade portion 185 for removing rust. Further, the outer diameter of the disc 183 is slightly larger than the outer diameter of the mounting portion 177, and is eccentric to the mounting portion 177 and is fixed to the leg portion 181. Furthermore, in the present embodiment, a part of the peripheral side wall protrudes in a semicircular shape outward in the radial direction from the middle in the axial direction toward the lower end portion, and a protruding portion 187 is formed along the axial direction. Yes. The protruding portion 187 is formed between the adjacent leg portions at one location along the axial direction.

  Similar to the first rust hump remover 161, the second rust hump remover 175 is attached to the insertion rod 47, and the insertion rod 47 is pushed into the main body 21 and moved up and down to thereby move the blade of the disk 183. The rust hump R in the vertical pipe 3 is scraped off by the portion 185.

FIG. 13 is a perspective view showing a third rust hump removing tool.
Similar to the first rust hump removing tool 161, the third rust hump removing tool 189 includes a cylindrical mounting portion 191 into which the holding portion 55 of the insertion rod 47 can be fitted. Similarly to the first rust hump removing tool 161, the attachment portion 191 can accommodate the endoscope body S therein, and a step portion is formed on the inner surface of the attachment portion 191. The mounting portion 191 is formed with four pin holes 193 as in the mounting portion 63 of the endoscope holder 61.

  A part of the lower end portion of the attachment portion 191 is formed in a slight spiral shape so as to extend outward from the attachment portion 191 in a band shape. In this embodiment, a substantially half circumference of the mounting portion 191 is formed to extend in a band shape. The tip of the extended portion 195 is formed as an inclined surface that is inclined outward as it goes to the tip, and serves as a blade portion 197 for removing rust humps. Further, the inner peripheral surface of the lower end portion of the mounting portion 191 is formed as an inclined surface that extends outward in the radial direction as it goes downward including the extending portion 195. In addition, a part of the peripheral side wall protrudes in a semicircular shape outward in the radial direction from the middle in the axial direction toward the lower end of the attachment portion 191, and a protruding portion 199 is formed along the axial direction. In the present embodiment, the protruding portion 199 is formed at one location above the extending portion 195 along the vertical direction.

  Similar to the first rust hump removing tool 161, the third rust hump removing tool 189 is also attached to the lower end of the insertion rod 47 and fed into the vertical tube 3. Then, by rotating the insertion rod 47 or the extension rod 137 in the circumferential direction, the blade portion 197 scrapes away the rust hump R in a wider range than the attachment portion 191.

  When using the 2nd rust hump removal tool 175 and the 3rd rust hump removal tool 189, the rust hump scraped off from the drain pipe 43 of the main body 21 is the same as when using the first rust hump removal tool 161. Discharged. The second rust hump remover 175 and the third rust hump remover 189 are preferably used after the first rust hump remover 161 has previously removed the rust hump near the center of the vertical tube 3.

The endoscope inserter of the present invention is not limited to the above embodiment, and can be changed as appropriate.
In the said Example, although the main body 21 was attached to the repair valve 5, you may make it attach to the vertical pipe comprised by the saddle water faucet attached to a water distribution pipe.
In the above embodiment, the flange 21 is provided at the lower end of the main body 21 and attached to the repair valve 5. It is also possible to attach it.

  In the above embodiment, the endoscope holder 61 and the rust hump removing endoscope holders 161, 175, and 189 are detachably attached to the lower end portion of the insertion rod 47. A fixed configuration may be used.

In addition, the guide member 95 has a shape in which a round bar is curved, but may have a shape bent in a “<” shape.
Further, in the above embodiment, the recess 49 is provided at the upper end of the lower member between the adjacent insertion rod 47 and the extension rod 137, or between the adjacent upper and lower extension rods 137, 137, Although the insertion part 139 is provided in the lower end part of the upper member, the reverse may be sufficient. That is, while providing the upper recessed part 49 in the lower end part of an upper member, you may provide the convex insertion part 139 in the upper end part of a lower member.

  By the way, when the endoscope inserter of the present invention is used in a non-narrow place such as a valve chamber, the insertion rod and the one or more extension rods are composed of a single bar connected in advance. May be. In such a case, the insertion bar and the extension bar can be formed from a single bar. That is, when the length of the insertion rod is relatively long, the extension rod is not necessary.

It is a front view longitudinal cross-sectional view which shows one Example of the endoscope inserter of this invention. It is a front view which shows the state with which the endoscope inserter of FIG. 1 was mounted | worn with the vertical pipe. It is a perspective view which shows the state with which the endoscope inserter of FIG. 1 was mounted | worn with the vertical pipe. It is a disassembled perspective view which shows one Example of an endoscope holder. It is a longitudinal cross-sectional view which shows the center part of the mounting plate of an Example. It is a front view longitudinal cross-sectional view which shows the state by which the endoscope inserter of the Example was attached to the vertical pipe. It is a figure which shows the state which pushed the insertion rod from the state of FIG. 6, and the induction | guidance | derivation material contacted the pipe bottom of the water distribution pipe. It is a figure which shows the state which pushes in the insertion rod and the cable from the state of FIG. 7, the leg part of the endoscope holder reaches the tube bottom, and sends the endoscope main body into the water pipe. It is a perspective view which shows the upper part of the endoscope inserter in the state of FIG. 8, and shows the state which controlled the vertical motion of the insertion rod. It is a perspective view of the 1st rust hump removal tool of the present invention. It is sectional drawing which shows the state which has scraped off the rust hump in a vertical pipe with the 1st rust hump removal tool of FIG. It is a perspective view which shows the 2nd rust hump removal tool of this invention. It is a perspective view which shows the 3rd rust hump removal tool of this invention. It is a front view which shows the state in which the vertical pipe part is provided in the valve chamber.

Explanation of symbols

21 Main body 39 Branch tube 43 Drain pipe 45 On-off valve 47 Insertion rod 55 Holding portion 61 Endoscope holder 63 Mounting portion 67 Leg portion 71 Guide material 95 Guide material 137 Extension rod 145 Handle 149 Turnbuckle 161 First rust hump remover 175 Second rust hump remover 189 Third rust hump remover

Claims (15)

A main body installed in a watertight state on the upper part of the vertical pipe portion branched upward from the water pipe;
An insertion that is provided so as to be movable up and down with respect to the main body while maintaining a watertight state with the main body, and is controlled so that the downward movement with respect to the main body can be released with the upper end portion exposed from the main body With a stick,
An endoscope holder provided at the lower end of the insertion rod and capable of placing the endoscope body;
An endoscope insertion device comprising: an extension rod that is detachably connected to an upper end portion of the insertion rod, and that can be inserted into the main body while maintaining a watertight state with the main body. The extension rod is arranged so that the connecting portion to the insertion rod is disposed below the upper end portion of the main body and the downward movement relative to the main body is releasable with the upper end portion exposed from the main body. And
The endoscope insertion device according to claim 1, wherein another extension rod is detachably connected to an upper end portion of the extension rod. The downward movement restriction of the insertion rod or the extension rod with respect to the main body is achieved by forming a stop hole consisting of a through hole or a concave hole on the outer peripheral surface of the upper end portion of the insertion rod or the extension rod. The endoscope inserter according to claim 1 or 2, wherein a member to be inserted is engaged with the main body. The endoscope holder is
A mounting portion that extends vertically downward and has a leg portion, and that is integrally or detachably provided at a lower end portion of the insertion rod;
A guide member that is rotatably supported by the attachment portion and guides the endoscope main body into the water pipe.
In the state where the base end portion is rotatably supported by the guide member and is suspended, the guide member extends downward from the guide member and the leg portion, and the distal end portion is pressed against the tube bottom of the water distribution pipe. The endoscope inserter according to any one of claims 1 to 3, further comprising: a guide member that rotates the guide member around a base end portion thereof. 5. The internal view according to claim 4, wherein the leg portion can be pushed in until the lower end portion of the leg comes into contact with the bottom of the water distribution pipe, and the leading end of the guide member is in contact with the bottom of the pipe in this state. Mirror inserter. The endoscope holder includes an attachment portion that is integrally or detachably provided at a lower end portion of the insertion rod,
The endoscope inserter according to any one of claims 1 to 3, wherein a blade portion for scraping off rust humps adhering to the inside of the pipe is provided at a lower end portion of the attachment portion. . The main body includes a cylindrical portion extending up and down in a size that can accommodate the endoscope holder,
The endoscope cable is inserted in a watertight state and capable of moving forward and backward from an upper end portion of a branch tube that branches obliquely upward from a peripheral side surface of the tubular portion. The endoscope inserter according to any one of the above. A main body installed in a watertight state on the upper part of the vertical pipe portion branched upward from the water pipe;
Maintaining a watertight state with this main body, an insertion rod provided to be movable up and down with respect to the main body,
An endoscope holder provided at the lower end of the insertion rod and capable of placing the endoscope body;
An detachable connection to the upper end of the insertion rod, and a supplementary rod that can be inserted into the main body while maintaining a watertight state with the main body,
A concave portion or a convex portion is formed on the upper end portion of the insertion rod,
At the lower end of the extension rod, an insertion part to the concave or convex part is formed,
In a state where the concave portion or the convex portion of the insertion rod is fitted into the insertion portion, a screw is screwed from the outer surface of the insertion rod or the extension rod, and the insertion rod and the extension rod are connected,
In this connected state, the screw does not protrude from the outer surface of the insertion rod or the extension rod. Provided with a plurality of extension rods, a lower end portion of each extension rod is formed with an insertion portion, and an upper end portion is formed with a concave portion or a convex portion into which the insertion portion can be fitted,
The extension rods adjacent to each other in the vertical direction are connected to one of the extension rods in the state where the insertion portion of the extension rod arranged on the upper side is fitted into the concave portion or the convex portion of the extension rod arranged on the lower side. Screws are screwed in from the outer surface of the adder bar,
The endoscope inserter according to claim 8, wherein, in this connected state, the screw does not protrude from an outer surface of one of the extension rods. An attachment portion provided at a lower end portion of an insertion rod inserted in a watertight state from an upper portion of a vertical pipe portion branched upward from a water distribution pipe, and having a leg portion extending vertically downward;
A guide member that holds the base end portion rotatably in this attachment portion and guides the endoscope main body into the water pipe,
In the state where the base end portion is rotatably supported by the guide member and is suspended, the guide member extends downward from the guide member and the leg portion, and the distal end portion is pressed against the tube bottom of the water distribution pipe. An endoscope inserter comprising: a guide member that rotates a guide member around a base end portion thereof. The guide material has a substantially semicircular cross-sectional shape and is formed to be elongated vertically, and its tip is formed in a substantially spherical shape,
The guide material is a bar material whose base end portion is rotatably held in the middle portion on the outer peripheral surface side of the guide material, and whose distal end portion is bent or curved so as to face in a direction opposite to the distal end portion of the guide material. The endoscope inserter according to any one of claims 4, 5, and 10, wherein: An attachment portion provided at the lower end portion of the insertion rod inserted in a watertight state from the upper portion of the vertical pipe portion branched upward from the water pipe;
At the lower end of this mounting part, there is provided a blade part that scrapes off rust humps adhering to the inside of the pipe,
The endoscope insertion device characterized in that the attachment portion is formed in a cylindrical shape, and an endoscope main body can be accommodated therein. A method of guiding an endoscope main body introduced in a watertight state from an upper portion of a vertical pipe portion branched upward from a water distribution pipe along the vertical pipe portion with an endoscope holder,
A cylinder in which the endoscope main body and the endoscope holder are accommodated in a state where water distribution to the upper opening of the vertical pipe portion is stopped by a repair valve, a fire hydrant, or a saddle hydrant of the vertical pipe portion Installing the lower end of the main body in a watertight state in the upper opening of the vertical pipe,
After releasing the water stop, the upper end of the cylindrical body extends upward in a watertight state, and the endoscope holder pushes the insertion rod provided at the lower end downward, A step of locking the upper end portion and the upper end portion of the cylindrical main body,
Connecting the lower end of the extension rod having the same cross-sectional shape as the insertion rod to the upper end of the insertion rod;
An endoscope insertion method comprising: a step of pushing the extension rod downward after releasing the locking of the insertion rod. Locking the upper end of the extension rod and the upper end of the tubular body;
Connecting the lower end of another extension rod to the upper end of the extension rod;
The endoscope insertion method according to claim 13, further comprising: pushing the other extension rod downward after releasing the locking of the extension rod. Prior to the insertion of the endoscope holder, a rust hump removing tool is attached to the lower end of the insertion rod, and the pipe on the outer periphery of the cylindrical body is opened and drained to the outside, The endoscope insertion method according to claim 13 or 14, further comprising a step of removing rust humps in the vertical tube portion.

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