JP2014077497A - Work tool introduction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work tool introduction device in which motion of a guide part is not influenced by a fluid pipe and the work tool can be positively fed into a fluid pipe.SOLUTION: This invention relates to a work tool introduction device 4 for introducing a work tool 3a performing a prescribed work within a fluid pipe 1 from a branch part 2c branched from the fluid pipe 1 into the fluid pipe 1 under non-interrupted flow state. The work tool introduction device comprises a shaft member 8 that can be advanced or retracted from the branched part 2c into the fluid pipe 1, a guide part 62 movably arranged at the extremity end of the shaft member 8 to guide the work tool 3a toward a prescribed direction and an operating part 63 for moving the guide part 62 within the fluid pipe 1, at least a part of the operating part 63 protrudes toward the extremity end of the shaft member 8 rather than the guide part 62, the shaft member 8 is moved forward or retracted in the fluid pipe 1, the operating part 63 is made to be movable starting from pushing against the inner peripheral surface 1b of the fluid pipe 1 and then the guide part 62 can be faced in a prescribed direction.

Description

  The present invention relates to a working tool introduction device that introduces a working tool that performs a predetermined operation inside a fluid pipe into the fluid pipe from a branching portion that branches from the fluid pipe in an uninterrupted state.

  2. Description of the Related Art Conventionally, in order to introduce a working tool that performs a predetermined work inside a fluid pipe into the fluid pipe in a non-continuous flow state, for example, a working tool introduction apparatus as shown in Patent Document 1 has been developed. This is to insert a moving part in which a working tool such as an endoscope is arranged from the branching part side into the fluid pipe, and contact the curved guide material provided at the lower end of the moving part with the pipe bottom of the fluid pipe, Then, by further pushing the moving part toward the tube bottom side, the leading end of the guide member and the leading end of the guiding unit move in a direction away from each other while sliding on the tube bottom, and the guiding unit moves in the axial direction of the fluid pipe. Come to face. After that, the work tool is fed along the guide portion and introduced into the fluid pipe by feeding the work tool.

JP 2007-101814 (page 17, FIG. 7)

  However, in Patent Document 1, the leading end portion of the guide member and the leading end portion of the guide portion are slid on the tube bottom of the fluid pipe so as to be separated from each other. To face. For this reason, for example, when a rust lump is generated on the inner peripheral surface of the fluid pipe, the guide part and the guide material are caught by such a rust lump, and the guide part cannot move sufficiently. There is a problem that it becomes impossible to introduce work tools.

  The present invention has been made paying attention to such problems, and provides a work tool introduction device that can reliably introduce a work tool into the fluid pipe without the movement of the guide portion being affected by the fluid pipe. The purpose is to do.

In order to solve the above-described problem, the work implement introducing apparatus of the present invention includes:
A working tool introduction device for introducing a working tool for performing a predetermined operation inside a fluid pipe into the fluid pipe from a branching portion side branched from the fluid pipe into the fluid pipe in an uninterrupted state,
A shaft member that can move forward and backward from the branching portion toward the fluid pipe, a guide portion that is movably provided on the distal end side of the shaft member, and guides the working tool in a predetermined direction; and An operation unit that moves inside the fluid pipe,
The operation portion is disposed so that at least a part protrudes toward the tip end side of the shaft member with respect to the guide portion, and the shaft member is moved forward and backward toward the fluid pipe to move the operation section of the fluid pipe. It is possible to move starting from pressing on the inner peripheral surface, and the guide portion can move so as to face the predetermined direction.
According to this feature, the guide portion is pressed against the inner peripheral surface of the fluid pipe by pressing the operation portion, which is disposed at least partially protruding from the guide portion toward the distal end side of the shaft member, to the inner peripheral surface of the fluid pipe. It can move so as to face a predetermined direction before coming into contact. For this reason, even when rust is generated on the inner peripheral surface of the fluid pipe, the work tool is moved inside the fluid pipe without the movement of the guide portion being affected by the shape of the inner peripheral surface of the fluid pipe. Can be introduced.

The work implement introducing device of the present invention is
The guide part is provided on the tip side of the shaft member so as to be rotatable.
According to this feature, since the guide portion is rotated in a predetermined direction starting from the operation portion being pressed against the inner peripheral surface of the fluid pipe, the operation portion is placed on the inner peripheral surface of the fluid pipe. Even if it is gradually pressed, the rotation of the guide portion does not come into contact with the inner peripheral surface of the fluid pipe, and the guide portion can be surely directed in a predetermined direction.

The work implement introducing device of the present invention is
The shaft member is provided with an insertion restricting portion for restricting insertion of the shaft member, and the insertion restricting portion restricts insertion of the shaft member when the guide portion faces the predetermined direction. It is a feature.
According to this feature, since the shaft member is restricted from further insertion of the shaft member by the insertion restricting portion when the guide portion faces a predetermined direction, it is easy for the operator to complete the movement of the guide portion. Can grasp.

The work implement introducing device of the present invention is
It is characterized in that there is provided a returning means for accommodating the guide part within the inner diameter of the branch part by reducing the pressing force applied to the operation part.
According to this feature, the operating member can be accommodated in the inner diameter of the branching portion by the return means only by reversing the shaft member and weakening the pressing of the operating portion against the inner peripheral surface of the fluid pipe. It is not necessary to perform a special work for accommodating the facing guide part in the branch part as before, and the removal work of the apparatus can be simplified.

It is a front view which shows the fluid pipe | tube with which the working tool introduction apparatus was attached. (A) is a sectional side view which shows a front-end | tip member, (b) is a front view similarly. It is a sectional side view which shows the state by which the front-end | tip member was arrange | positioned in the position spaced apart from the internal peripheral surface of the fluid pipe | tube by the fixed distance. It is a sectional side view which shows the state which pressed the operation part of the front-end | tip member to the internal peripheral surface of the fluid pipe | tube. It is a sectional side view which shows the state which introduced the work tool toward the fluid pipe | tube from the state of FIG. It is a sectional side view which shows the modification of a front-end | tip member.

  EMBODIMENT OF THE INVENTION The form for implementing the working tool introduction apparatus which concerns on this invention is demonstrated below based on an Example.

  A working tool introduction apparatus according to an embodiment will be described with reference to FIGS. 1 to 6. As shown in FIG. 1, the fluid pipe 1 of the present embodiment is made of, for example, ductile cast iron for waterworks buried in the ground, and is formed in a substantially circular shape in cross section, and the inner peripheral surface is powder-coated or Covered with a mortar layer. The fluid pipe according to the present invention may be made of other metals such as cast iron and steel, or made of asbestos, concrete, vinyl chloride, polyethylene, or polyolefin. Furthermore, the inner peripheral surface of the fluid pipe is not limited to the mortar layer, and may be coated with, for example, an epoxy resin or the like, or an appropriate material may be coated on the inner peripheral surface of the fluid pipe with powder coating. Further, in this embodiment, the fluid in the fluid pipe is clean water, but the fluid flowing in the fluid pipe is not necessarily limited to clean water, for example, industrial water, agricultural water, sewage, etc., gas, gas and liquid The gas-liquid mixture may be used.

  The fluid pipe 1 surrounds a predetermined portion in a sealed manner by a casing 2 including a first divided member 2a and a second divided member 2b. In addition, the housing | casing 2 of a present Example may be the division | segmentation structure which consists of a some divided | segmented three or more case body, or does not have a division | segmentation structure, but is a casting mold, welding, or machining Etc., it may be formed continuously. Furthermore, although the material of the housing 2 is made of a metal material such as ductile cast iron, various materials can be used as in the case of the fluid pipe described above as long as the material is applied according to the material of the fluid pipe. There may be.

  The first split member 2a is provided with a branch portion 2c extending upward in a direction substantially perpendicular to the fluid pipe 1, and an on-off valve device 30 capable of opening and closing the branch portion 2c is attached to the branch portion 2c. Yes. Further, on the downstream side of the on-off valve device 30 branched from the fluid pipe 1, the camera 3a of the endoscope 3 as a working tool of the present invention for imaging the inside of the fluid pipe 1 as described later (see FIG. 3). Is attached to the inside of the fluid pipe 1 in an uninterrupted state. In the present embodiment, the camera 3a of the endoscope 3 has been described as the working tool of the present invention. However, the present invention is not limited to this, and the working tool contracts inside the fluid pipe 1, for example, and flows through the fluid pipe 1. It may be a valve body that can be switched to a state or an uninterrupted flow state, or a suction device that sucks impurities or the like accumulated in the fluid pipe 1 and moves in the direction of the pipe axis inside the fluid pipe 1 to perform a predetermined operation. Is like doing.

  A perforated part 1a perforated by a perforating apparatus (not shown) is formed at the top of the fluid pipe 1 surrounded by the casing 2, and an introduction to be described later from the branching part 2c side through the perforated part 1a. The tip member 6 of the apparatus 4 and the camera 3a are introduced into the fluid pipe 1. Note that the branching portion of the present invention is not necessarily limited to the one drilled in the punching device. For example, the branching portion has an opening formed in advance at an appropriate position of the fluid pipe, and a branching tube communicating with the opening is provided. And may be configured.

  As shown in FIG. 1, the work implement introducing device 4 (hereinafter referred to as the introducing device 4) includes a shaft member 8 that can move forward and backward from the branch portion 2 c toward the inside of the fluid pipe 1, and the shaft member 8. It is mainly composed of a tip member 6 detachably provided at the tip portion, and a short tube 5 communicating with the inside of the fluid pipe 1 through the perforated portion 1a and accommodating the tip member 6 and the camera 3a. The tip member 6 is not limited to be detachably provided at the tip portion of the shaft member 8 but may be any part or member provided around the tip portion of the shaft member 8.

  The short pipe 5 has flanges 5a and 5b formed at the upper end and the lower end of the pipe part 5c, respectively, and the flange 5a is connected to the on-off valve device 30 in a sealing manner by bolts or the like not shown. A lid member 13 having an insertion port for inserting the shaft member 8 is connected to the flange 5b.

  The shaft member 8 is a cylindrical body that is inserted into the short tube 5 through the insertion port of the lid member 13, and the camera 3 a and the cable 3 b in the endoscope 3 pass through the shaft member 8. It is possible to do. A cable 3b extending from the rear end of the shaft member 8 to the outside is connected to an external monitor 3c so that an image taken by the camera 3a can be confirmed from the outside of the fluid pipe 1.

  Further, the shaft member 8 includes a pair of arms 8 a and 8 a extending opposite from the rear end portion of the shaft member 8, and the arms 8 a and 8 a include a ring 13 a and a ring 13 a erected on the upper surface of the lid member 13. Lever hoists 14 are respectively installed on 13a. Each lever hoist 14 includes a chain 14a, a fixed hook 14b provided at one end of the chain 14a and engaged with the ring 13a, a moving hook 14c provided at the other end of the chain 14a and engaged with the arm 8a, A lever 14d that can be manually operated to wind the chain a, and the movable hook 14c is moved relative to the fixed hook 14b by manual operation of the lever 14d. In this manner, when the lever hoist 14 moves the moving hook 14c relative to the fixed hook 14b, the lever hoist 14 takes up the chain 14a using the ring 13a engaged with the moving hook 14c as a reaction force, and moves the shaft member 8 forward. It is configured to let you. In the present embodiment, the lever hoist 14 has been described as a means for moving the shaft member 8. However, for example, the shaft member 8 may be moved back and forth using a hydraulic driving device, or the rear end of the shaft member 8 may be moved. A handle may be provided in the part, and the shaft member 8 may be moved forward and backward by manually operating the handle.

  As shown in FIG. 2, the tip member 6 includes a cylindrical body 61 detachably provided at the tip of the shaft member 8, a guide portion 62 pivotally supported by the cylindrical body 61, and a guide portion 62. As will be described later, the control unit 63 is configured to rotate inside the fluid pipe 1 and, as will be described later, an auxiliary unit 64 that assists the feeding movement of the endoscope 3 when the endoscope 3 is fed out. .

  The cylindrical body 61 is formed by a pipe having an open front end 61a and a rear end, and the front end 61a of the cylindrical body 61 is provided with an opening A that is opened by partially cutting a side surface. A shaft 50 that traverses in the radial direction of the cylindrical body 61 is provided at a peripheral edge portion of the opening A in the cylindrical body 61, and a guide portion 62 is provided on the shaft 50 so as to be rotatable about an axis. . That is, the guide part 62 is pivotally supported by the cylindrical body 61 so as to face the direction of the opening A. Further, the distal end surface 61c of the cylindrical body 61 constitutes an insertion restricting portion of the present invention as will be described later.

  The guide part 62 has a sliding surface 62a that is located on the opening A side and slides the camera 3a, and an extending part 62b that extends to the opposite side of the sliding surface 62a. The extending portion 62b is connected to the rear end portion 63a of the operation portion 63 via the link member 16, and the connecting portions at both ends of the extending portion 62b, the rear end portion 63a, and the link member 16 are as follows. Each is rotatable. Therefore, when the operation part 63 moves, the movement of the operation part 63 is transmitted to the guide part 62 via the link member 16, and the guide part 62 is rotated to the opening A side in conjunction with it. In addition, it can replace with this link member 16, and can use various members or apparatuses, such as a cam and a wire.

  The operation part 63 has a projecting part 63 b projecting from the operation part 63, and this projecting part 63 b is coaxial with the axial direction of the cylindrical body 61 formed at the distal end part 61 a of the cylindrical body 61. The operation portion 63 is inserted into the guide groove 61b so that it can move along the guide groove 61b, and a large-diameter overhang portion 63c provided in the projecting portion 63b is engaged with the outer peripheral edge of the guide groove 61b. By stopping, the operation part 63 is prevented from being detached from the guide groove 61 b and the operation part 63 is prevented from being inclined from the axial direction of the cylinder part 61. The operation portion 63 is disposed at a position where the distal end surface 63 d of the operation portion 63 protrudes toward the distal end side of the shaft member 8 with respect to the guide portion 62.

  The auxiliary portion 64 is composed of a pin member that is inserted into the upper end portion of the cylindrical body 61 at right angles to the axial direction of the cylindrical body 61. As shown in FIG. It passes between the portion 64 and the inner peripheral surface of the cylindrical body 61. According to this, the auxiliary portion 64 is designed to narrow the range in which the camera 3a and the cable 3b can move in the cylinder 61, and the camera 3a and the cable 3b are in the cylinder 61 due to the bending of the cable 3b. Is restricted from moving irregularly. Further, the auxiliary portion 64 is sandwiched between the inner peripheral surface of the cylindrical body 61 and the rear end portion of the camera 3a connected to the cable 3b so that the camera 3a is not interfered with the inner peripheral surface of the branching portion 2c. While positioning in the body 61, the orientation of the camera 3a is held in a slightly tilted state so that the camera 3a described later can be easily sent out.

  As shown in FIG. 3, the camera 3 a is in contact with a part of the sliding surface 62 a of the guide portion 62 before the camera 3 a is sent out, and the cable 3 b is an auxiliary portion 64 in the cylindrical body 61. Rather than the opening A. Further, a coil spring 20 is provided so as to cover the cable 3b from the end of the camera 3a and cover a predetermined length, and the elastic restoring force of the coil spring 20 counteracts the opening A in the cylindrical body 61 as shown in FIG. It works to the side to prevent the guide part 62 from rotating.

  Next, an introduction process for introducing the camera 3a into the fluid pipe 1 will be described with reference to FIGS. In this introduction process, the endoscope 3 shown in FIG. 1 is operated, and an operator can check the state inside the fluid pipe 1 at any time via the monitor 3c.

  First, as shown in FIG. 3, the opening / closing valve 30a of the opening / closing valve device 30 is opened, and each lever hoist 14 (see FIG. 1) is operated with the shaft member 8 positioned in the circumferential direction. By operating each lever hoist 14 in this way, the shaft member 8 moves forward toward the fluid pipe 1 as described above, and the tip member 6 reaches the perforated portion 1a. At this time, the operator moves the shaft member 8 toward the fluid pipe 1 while confirming the monitor 3c displaying the image taken by the camera 3a. The occurrence of tilt or the like can be grasped.

  Next, as shown in FIG. 4, when the shaft member 8 is further moved forward from the state where the tip member 6 has reached the perforated portion 1 a, the tip surface 63 d of the operation portion 63 is moved to the inner peripheral surface 1 b of the fluid pipe 1. The operation portion 63 is pressed against the inner peripheral surface 1 b of the fluid pipe 1. Therefore, the operation portion 63 moves toward the rear end of the shaft member 8 along the guide groove 61b, and the guide portion 62 rotates around the axis of the shaft 50 in accordance with the movement of the operation portion 63 as described above. Gradually turn toward the opening A side. At this time, the guide portion 62 is rotated without the operation portion 63 abutting against the inner peripheral surface 1 b of the fluid pipe 1 because the operation portion 63 first abuts against the inner peripheral surface 1 b of the fluid tube 1.

  Then, as shown in FIG. 4, when the shaft member 8 is advanced and moved until the distal end surface 61 c of the cylindrical body 61 comes into contact with the inner peripheral surface 1 b of the fluid pipe 1, the guide portion 62 is moved in the predetermined direction of the present invention. It comes to face the pipe axis direction of a certain fluid pipe 1. At this time, the distal end surface 61c of the cylindrical body 61 is in contact with the inner peripheral surface 1b of the fluid pipe 1, so that the shaft member 8 cannot move further. In other words, the guide portion 62 is configured to face the tube axis direction of the fluid pipe 1 when the distal end surface 61 c of the cylindrical body 61 comes into contact with the inner peripheral surface 1 b of the fluid pipe 1.

  Thereafter, as shown in FIG. 5, the operator performs an operation of feeding the cable 3 b from the outside toward the inside of the fluid pipe 1, and moves the camera 3 a to the guide unit 62. As described above, since the camera 3a is in contact with a part of the sliding surface 62a of the guide portion 62 in advance, the camera 3a moves along the sliding surface 62a without interfering with the movement of the camera 3a. Then, it is introduced toward the tube axis direction of the fluid tube 1 through the opening A. Therefore, the camera 3 a can check the inside of the fluid pipe 1 along the pipe axis of the fluid pipe 1.

  When the confirmation of the inside of the fluid pipe 1 by the camera 3a is completed, the operator pulls back the cable 3b toward the outside and moves the camera 3a to the initial position. In this state, the shaft member 8 is moved to the branching portion 2c side. Move backwards toward. When the shaft member 8 is moved backward toward the branch portion 2c, the operation portion 63 is separated from the inner peripheral surface 1b of the fluid pipe 1, and the operation portion 63 is moved in the vertical direction by its own weight (return means). It becomes like this. The guide unit 62 gradually rotates around the axis of the shaft 50 toward the opening A and the opposite side of the cylindrical body 61 as the operation unit 63 moves. At this time, as described above, since the elastic restoring force of the coil spring 20 is acting on the side opposite to the opening A of the cylindrical body 61, the elastic restoring force is rotated toward the side facing the opening A of the guide portion 62. Is prompted.

  Thus, when the rotation of the guide portion 62 to the opposite side of the opening A is completed, the guide portion 62 is accommodated in the inner diameter of the branch portion 2c as shown in FIG. Therefore, the tip member 6 can be removed from the fluid pipe 1 only by moving the shaft member 8 backward.

  As described above, the operation portion 63 is disposed so as to protrude toward the distal end side of the distal end member 6 relative to the guide portion 62, and starting from pressing the operation portion 63 against the inner peripheral surface 1b of the fluid pipe 1, Before the guide portion 62 comes into contact with the inner peripheral surface 1 b of the fluid pipe 1, the guide part 62 rotates in the tube axis direction of the fluid pipe 1. Therefore, even when rust or the like is generated on the inner peripheral surface 1 b of the fluid pipe 1, the movement of the guide portion 62 is not affected by the shape of the inner peripheral surface 1 b of the fluid pipe 1. It can be introduced into the fluid pipe 1.

  Further, even if the operation portion 63 is gradually pressed against the inner peripheral surface 1 b of the fluid pipe 1, the rotation of the guide portion 62 does not come into contact with the inner peripheral surface 1 b of the fluid pipe 1, and the guide portion 62 can be surely connected to the fluid pipe. 1 is directed in the direction of the tube axis.

  Further, when the guide member 62 faces a predetermined direction, the shaft member 8 has its tip surface 61c abutted against the inner peripheral surface 1b of the fluid pipe 1 and further insertion of the shaft member 8 is restricted. Therefore, the operator can easily grasp that the movement of the guide unit 62 is completed.

  Further, by reversing the shaft member 8 and weakening the pressure of the operation portion 63 against the inner peripheral surface 1 b of the fluid pipe 1, the operation portion 63 moves downward by its own weight, and the guide portion is moved by the movement of the operation portion 63. Since the 62 gradually rotates and fits within the inner diameter of the branching portion 2c, no special work is required to place the guide portion 62 facing a predetermined direction into the branching portion 2c as before, and the tip member 6 The removal work can be simplified. That is, the operation unit 63 constitutes a return means of the present invention. The operation unit 63 may be provided with a weight having a predetermined weight for increasing its own weight so as to increase the return force.

  In addition, since the tip member 6 can be attached to and detached from the tip of the shaft member 8, it is possible to replace the tip member 6 with a new tip member 6 when the guide portion 62 or the operation portion 63 deteriorates over time. It is not necessary to replace the member 8, and the cost can be reduced.

  In addition, the modification in the front-end | tip member of a present Example is demonstrated. As shown in FIG. 6, the tip member 6 ′ of the present modification has a protrusion between the rear end portion of the guide groove 61 b and the operation portion 63 so that the operation portion 63 is biased in the traveling direction of the tip member 6 ′. A spring 12 which is a return means in the present invention having elasticity is fixed between the mounting portion 63b.

  When the shaft member 8 is advanced and moved in the same manner as in the above embodiment, the tip surface 63d of the operation portion 63 comes into contact with the inner peripheral surface 1b of the fluid pipe 1 and the operation portion 63 is inside the fluid pipe 1 although not shown here. It comes to be pressed against the peripheral surface 1b. Therefore, the operation portion 63 moves toward the rear end of the shaft member 8 along the guide groove 61b while resisting the urging force acting in the traveling direction of the tip member 6 ′, and the guide portion 62 is moved to the operation portion. Along with the movement of the shaft 63, it gradually turns around the axis of the shaft 50 toward the opening A side.

  Further, when the shaft member 8 is moved backward from the state in which the operation portion 63 is pressed against the inner peripheral surface 1 b of the fluid pipe 1, the distal end surface 63 d of the operation portion 63 is moved to the inner peripheral surface of the fluid pipe 1. While being separated from 1b, the operation part 63 is moved in the advancing direction of the shaft member 8 by the elastic restoring force of the spring 12. And the guide part 62 rotates gradually toward the opening A and the opposite side of the cylinder 61 around the axis of the shaft 50 in accordance with the movement of the operation part 63, and has a diameter smaller than the inner diameter of the branch part 2c.

  As described above, the operation portion 63 is biased in the moving direction of the tip member 6 ′ by the elastic force of the spring 12, so that the guide portion 62 is pressed against the inner peripheral surface 1 b of the fluid pipe 1 of the operation portion 63. It becomes the diameter which fits in the internal diameter of the branch part 2c only by canceling | releasing, and it can enable removal of tip member 6 'from the inside of the fluid pipe | tube 1. FIG. The spring 12 may be replaced with an elastic member such as rubber or synthetic resin.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the shaft member 8 has been described as moving forward and backward in the vertical direction that is substantially orthogonal to the tube axis of the fluid pipe 1, but, for example, the shaft member 8 may move back and forth in the left-right direction. However, it may be one that moves forward and backward in an oblique direction with respect to the tube axis of the fluid pipe 1, and may be one that moves forward and backward in a direction different from the pipe axis of the fluid pipe 1.

  In addition, the guide unit 62 rotates around the axis of the shaft 50 and faces the pipe axis direction of the fluid pipe 1. For example, the guide part 62 slides obliquely from the shaft member and faces the pipe axis direction of the fluid pipe 1. You may make it, and a guide part is not restricted to what is pivotally supported by the shaft member.

  Further, the mode of introducing the tip member 6 into the fluid pipe 1 together with the camera 3a has been described. However, the present invention is not limited to this, and the camera is moved into the shaft member after the guide portion moves so as to face the pipe axis direction of the fluid pipe. And may be introduced into the fluid pipe.

  Further, in the above-described embodiment, the guide portion 62 of the fluid pipe 1 is relatively moved with respect to the movement amount in which the operation portion 63 is pressed toward the inner peripheral surface 1 b of the fluid pipe 1 and moves toward the rear end of the shaft member 8. The mode of rotating so as to face the tube axis direction has been described. For example, in the guide portion, the operation portion 63 is pressed against the inner peripheral surface 1b of the fluid tube 1 and moves toward the rear end of the shaft member 8. Then, it may be made to face the pipe axis direction of the fluid pipe 1 instantaneously.

  Moreover, the auxiliary | assistant part 64 is not restricted to what is comprised by the pin member inserted orthogonally with the axial direction of the cylinder 61, For example, a linear protrusion is provided in an axial member and a cylinder, and the said convex part is a camera. It is also possible to fit the concave portion provided in the fluid pipe and insert the camera into the fluid pipe while guiding the camera along the convex portion.

DESCRIPTION OF SYMBOLS 1 Fluid pipe 1b Inner peripheral surface 2 Housing | casing 2c Branch part 3a Camera (working tool)
4 Work tool introduction device 5 Short pipe 5a, 5b Flange 6, 6 'Tip member 8 Shaft member 12 Spring (return means)
14 Lever hoist 16 Link member 30 On-off valve device 50 Shaft 61 Cylindrical body 61c Front end surface (insertion restricting portion)
62 Guide part 63 Operation part (return means)
63d Tip surface 64 Auxiliary part

Claims (4)

A working tool introduction device for introducing a working tool for performing a predetermined operation inside a fluid pipe into the fluid pipe from a branching portion side branched from the fluid pipe into the fluid pipe in an uninterrupted state,
A shaft member that can move forward and backward from the branching portion toward the fluid pipe, a guide portion that is movably provided on the distal end side of the shaft member, and guides the working tool in a predetermined direction; and An operation unit that moves inside the fluid pipe,
The operation portion is disposed so that at least a part protrudes toward the tip end side of the shaft member with respect to the guide portion, and the shaft member is moved forward and backward toward the fluid pipe to move the operation section of the fluid pipe. A work implement introducing apparatus characterized in that it can be moved starting from pressing on an inner peripheral surface, and the guide portion can be directed in the predetermined direction.   The work tool introduction device according to claim 1, wherein the guide portion is rotatably provided on a distal end side of the shaft member.   The shaft member is provided with an insertion restricting portion for restricting insertion of the shaft member, and the insertion restricting portion restricts insertion of the shaft member when the guide portion faces the predetermined direction. The working tool introduction device according to claim 1 or 2, characterized in that   The work implement introducing device according to any one of claims 1 to 3, further comprising return means for storing the guide portion within an inner diameter of the branch portion by reducing a pressing force applied to the operation portion.

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