JP2005127347A - Pipe connection fitting and connecting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection fitting and a connecting method for minimizing affection of falling earth and sand in a vertical shaft with a vertical pipe arranged therein when the vertical pipe is connected to a horizontal pipe arranged in a horizontal shaft. <P>SOLUTION: The connection fitting (10) includes an attachment portion (26) for attaching the fitting to the vertical pipe (14) and two parallel projections (28) continuing to the attachment portion. The projections extend above a spigot (24) and parallel to an axis of the spigot in a virtual cylindrical plane which has an outer diameter of the horizontal pipe (12) or a diameter nearly equal to it and is coaxial with the spigot, and project from a front end of the spigot. Connection of the pipes is performed by lowering the vertical pipe with the connection fitting attached thereto until both the projections are placed on a top of a socket, by turning the spigot to the socket through operation of the vertical pipe at the ground surface and by then moving the horizontal vessel toward the vertical pipe. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a connection tool and a connection method used for interconnection of horizontal pipes and vertical pipes in the ground, and more specifically, disposed in the horizontal shafts and shafts of the vertical shafts that are formed in the ground and communicate with each other. The present invention relates to a connection tool and a connection method used to connect a vertical pipe made of a bent pipe having an insertion port, which is disposed in the shaft, to a horizontal pipe having a socket.

  In order to lay water and sewage pipes, gas pipes, pipes for communication lines, etc. in the ground, pipes (horizontal pipes) placed in horizontal shafts are placed in shafts communicating with the horizontal shafts. Tubes (vertical tubes) may be connected. The horizontal tube has a receiving port, and the vertical tube is formed of a bent tube, and has an insertion port that is received by the receiving port at a distal end portion thereof.

  By the way, in the case of a small-diameter shaft that is difficult for an operator to enter, the bottom portion of the horizontal tube receiving port can be connected to the horizontal tube by operating the vertical tube on the ground. Further, it has been proposed to provide a plate-shaped receiving portion that receives the insertion port of the vertical pipe that is lowered in the shaft and defines a guide surface of the insertion port with respect to the reception port of the horizontal pipe.

JP 2003-56749 A

  However, during the connecting operation of the vertical pipe, earth and sand that peels off from the wall surface of the shaft may accumulate on the receiving portion. The accumulated earth and sand prevent the insertion port and the receiving port of the horizontal tube from facing each other with the mounting of the insertion port of the vertical tube on the receiving unit, the relative between the receiving port and the insertion port It may impede migration and impair the closeness between the two tubes.

  Accordingly, an object of the present invention is to provide a connection tool and a connection method for minimizing the influence of exfoliated earth and sand in a vertical shaft in which the vertical pipe is arranged when the vertical pipe is connected to the horizontal pipe arranged in the horizontal shaft. There is to do. Another object of the present invention is to provide a connection device and method capable of adjusting the facing state of the longitudinal tube outlet with respect to the horizontal tube receptacle.

  The present invention relates to a main body and a main body, which are disposed in the shaft, in a horizontal pipe which is formed in the ground and communicates with each other and which is disposed in the horizontal shaft of the shaft and protrudes into the shaft. A connecting tool used for connecting a vertical pipe made of a bent pipe having an insertion port connected to the vertical pipe, the connecting tool being attached to the vertical pipe and a connecting part connected to the mounting part and parallel to each other The projection having the outer diameter of the horizontal tube or a diameter substantially equal to the outer diameter of the horizontal tube when the connection tool is attached to the vertical tube. On the imaginary cylindrical surface above the insertion slot, extending parallel to the axis of the insertion slot and protruding from the tip of the insertion slot.

  The connection tool preferably comprises a hole for passing a rope, for example a hole defined by a ring attached to a fixed part of the connection tool. The fixing portion preferably includes a pair of bands arranged so as to surround the main body or the insertion opening of the vertical tube and means for fastening both the bands.

  In addition, another connection tool according to the present invention is provided at a lower portion of the receiving port of the horizontal tube, for receiving the vertical tube, and for passing a rope provided on the vertical tube. With holes.

  The present invention also relates to a method for connecting the vertical pipe to the horizontal pipe, wherein the connection tool is attached to the vertical pipe, the vertical pipe is suspended in the shaft, and both protrusions of the connection tool are provided. The vertical tube is lowered until the portion is placed on the top of the horizontal tube receiving port, and the vertical tube is directed to the horizontal tube receiving port by operating the vertical tube on the ground, and then the Moving the horizontal tube toward the vertical tube.

  In another connection method according to the present invention, a connection tool having the hole is attached to the vertical pipe, a rope is passed through the hole of the connection tool, the vertical pipe is suspended in the shaft, and both the connection tools are connected. The vertical pipe is lowered until the projection is placed on the top of the horizontal pipe receptacle, and the insertion of the vertical pipe is directed to the horizontal pipe receptacle by the operation of the rope on the ground. Moving the horizontal tube toward the vertical tube. The method according to the present invention further includes collecting the rope on the ground.

  Still another method according to the present invention includes: a receiving portion for inserting the vertical tube provided at a lower portion of the receiving port of the horizontal tube; and a hole provided in the vertical tube for passing a rope. A connecting tool having a horizontal pipe and a vertical pipe, a rope being passed through a hole of the connecting tool, the vertical pipe being suspended in the shaft, and an inlet of the vertical pipe being a receiving hole of the horizontal pipe The vertical pipe is lowered until it is placed on the receiving portion of the pipe, and the insertion port of the vertical pipe is directed to the receiving opening of the horizontal pipe by the operation of the rope on the ground, and then the horizontal pipe is directed to the vertical pipe Moving.

  In the connection tool according to the present invention, when the connection tool is attached to the vertical pipe, both protrusions have an outer diameter of the horizontal pipe or a diameter substantially equal to the outer diameter. A virtual cylindrical surface coaxial with the mouth extends above the mouth and parallel to the axis of the mouth and protrudes from the tip of the mouth.

  According to this, when the vertical pipe is lowered in the shaft, the vertical pipe can be placed on the top of the receiving port of the horizontal pipe via the tip portions of both projections of the connection tool. By operating the vertical tube on the ground under this mounting state, the insertion port of the vertical tube can be placed on a common axis with the receiving port, that is, can be placed in an opposing state. It can be used as a guide means when the insertion port is received in the reception port. During pipe connection work, earth and sand that may be peeled off from the wall of the shaft and falling onto the horizontal pipe slide down along the outer peripheral surface of the horizontal pipe and are unlikely to accumulate on the horizontal pipe. Therefore, the protrusion is placed directly on the receiving port, not on the earth and sand on the receiving port, and therefore, the vertical tube is more accurately connected to the horizontal tube without being affected by the earth and sand. And can be done quickly.

  According to the connection tool having a hole through which the rope passes, when the vertical pipe is connected to the horizontal pipe, the vertical operation of the vertical pipe by the rope passed through the hole can be performed. Positioning on the common axis of the insertion port of the vertical tube with respect to the receiving port of the horizontal tube can be performed more quickly and easily than in the case of operating the vertical tube.

  When the fixing portion of the connection tool includes a pair of bands and fastening means for these, the main body or the insertion port of the vertical tube is sandwiched between both bands and tightened to thereby fix the vertical tube to the vertical tube. The connection tool can be firmly fixed.

  According to another invention in which the connection tool includes a receiving portion provided at a lower portion of the receiving port of the horizontal tube and a hole provided in the vertical tube, the insertion port of the vertical tube is placed on the guide unit. In this state, positioning of the insertion port with respect to the receiving port can be easily performed by operating the rope passed through the hole on the ground.

  In the method of connecting the horizontal pipe and the vertical pipe using the connection tool, after the connection tool is attached to the vertical pipe, the vertical pipe is inserted into the vertical hole, and both the connection tools are connected. By lowering the projection until the protrusion is placed on the top of the receiving port of the horizontal tube and operating the vertical tube on the ground, the insertion port of the vertical tube can be quickly and easily opposed to the receiving port of the horizontal tube. Subsequent movement of the horizontal tube toward the vertical tube allows the insertion port to be accurately received by the receiving port, using both projections placed on the receiving port as guide means.

  When using a connection tool having a hole through which the rope passes, in the state where both protrusions of the connection tool are placed in the receiving port, another person can suspend the vertical pipe while By manipulating the rope, the posture of the vertical pipe can be changed. Thereby, the insertion port can be easily positioned with respect to the receiving port when both the protrusions are placed on the receiving port.

  In addition, when using a connecting tool provided with a receiving portion provided at the bottom of the receiving port of the horizontal tube and a hole for passing the rope provided in the vertical tube, the above-described rope is passed through the hole. By the same ground operation as described above, the insertion of the vertical tube placed on the receiving portion can be easily positioned with respect to the receiving port of the horizontal tube.

  After the connection between the horizontal pipe and the vertical pipe, the rope can be removed from the hole by pulling one end thereof and collected on the ground.

  Referring to FIGS. 1 and 2, an example of a connection tool according to the present invention and another example are respectively indicated by the reference numeral 10 as a whole.

  The connection tool 10 is formed of a metal material such as steel, and is vertically connected to a horizontal pipe 12 installed as a part of a water and sewage pipe laid in the ground, a gas pipe, a pipe for passing a communication line, and the like. Used for connection of tube 14.

  The horizontal pipe 12 and the vertical pipe 14 are installed in a horizontal shaft 16 and a shaft 18 that are formed in the ground and communicate with each other. The horizontal pipe 12 is already arranged in the horizontal shaft 16, and a part of the end portion (a receiving port 20 described later) projects into the shaft 18.

  The horizontal tube 12 is a straight tube having a circular cross-sectional shape, and has a receiving port 20 at its end. The vertical tube 14 is a bent tube having a circular cross-sectional shape, and has a tubular body 22 with one end closed that extends straight, and an outlet 24 that is orthogonal to and communicates with the body.

  When the vertical tube 14 is connected to the horizontal tube 12, the connection tool 10 is attached to the vertical tube 14, that is, the vertical tube main body 22 (see FIG. 1) or the insertion port 24 (see FIG. 2).

  In order to connect the vertical pipe 14 to the horizontal pipe 12, the connecting tool 10 is attached to the vertical pipe 14, and then the vertical pipe 14 is suspended in the shaft 18 on the ground and lowered (FIG. 3). Thereafter, the vertical tube outlet 24 is made to face the horizontal tube receiving port 20 (FIG. 4), and then the horizontal tube 12 is moved toward the vertical tube 14 so that the insertion port 24 can be received by the receiving port 20 (FIG. 4). 5). Thereby, the vertical tube 14 is connected to the horizontal tube 12. (See FIGS. 3 to 5). A method of connecting the vertical tube 14 to the horizontal tube 12 will be described in detail later.

  The connection tool 10 includes an attachment portion 26 for attaching the connection tool 10 to the vertical tube 14, and two parallel protrusions 28 extending from the attachment portion 26.

  In the illustrated example, the fixing portion 26 includes a pair of bands 30 that have a semicircular shape as a whole, and fastening means 32 that fasten the bands 30 together.

  Each band 30 has an inner diameter slightly smaller than the outer diameter of the main body 22 or the insertion port 24 of the vertical tube, and has both end portions composed of a pair of plate-like joints 34. Both bands 30 are arranged around the vertical tube 14 (around the main body 22 or around the slot 24) when the connection tool 10 is attached to the vertical tube 14. At this time, both joints 34 of one band 30 are opposed to both joints 34 of the other band 30 with a slight gap therebetween.

  The fastening means 32 consists of two sets of bolts and nut assemblies in the illustrated example. According to each set of bolt and nut assembly, the bolt is passed through a bolt hole (not shown) provided in each joint 34 of both bands 30, and a nut (not shown) is screwed into this. By tightening the nut, both bands 30 are fastened to each other, and both bands 30 fasten the main body 22 or the outlet 24 of the vertical pipe. As a result, the connection tool 10 is attached to the vertical tube 14 so as not to move relative to the main body 22 or the insertion port 24 of the vertical tube.

  As shown in FIGS. 1 and 2, both protrusions 28 of the connection tool are located on a virtual cylindrical surface (not shown) coaxial with the outlet 24 when the connection tool 10 is attached to the vertical tube 14. Extends above the slot 24 in parallel with the axis of the slot 24. The virtual cylindrical surface has an outer diameter of the horizontal tube 12 or a diameter substantially equal to the outer diameter. Therefore, the extending form of both protrusions 28 is either of the following three, that is, an aspect extending in contact with the virtual cylindrical surface, or an aspect extending near or above the virtual cylindrical surface. Although it is most preferable that the protrusions 28 extend in contact with the virtual cylindrical surface, the manufacturing error of the horizontal tube 12, the vertical tube 14 and the connection tool 10, the mounting error of the connection tool 10, and the like are taken into consideration. Then, any one of the above-described three aspects is adopted.

  In addition, both protrusions 28 protrude from the tip of the insertion opening 24. Therefore, when the vertical pipe 14 is lowered in the vertical shaft 18 with its insertion port 24 down to connect the vertical pipe 14 to the horizontal tube 12, the tip of the horizontal pipe 12 protruding into the vertical shaft 18 is used. Both protrusions 28 can be placed on the top of a certain receiving port 20, whereby the vertical tube 14 can be supported on the horizontal tube 12. At this time, if both the protrusions 28 are parallel to the axis of the horizontal tube 12, the insertion port 24 of the vertical tube and the receiving port 20 of the horizontal tube are on a common axis or (in fact, two adjacent axes). ) They are arranged on opposite axes that can be considered to be substantially common.

  The structure as described below is employed so that when the connection tool 10 is attached to the vertical tube 14, both the protrusions 28 extend in the three modes described above.

  That is, in the example shown in FIG. 1, an arc-shaped notch 36 that is in contact with the outer peripheral surface of the insertion opening 24 of the vertical pipe is provided at the lower edge of one band 30 where both the protrusions 28 are continuous. Further, in the example shown in FIG. 2, each protrusion 28 is given an L-shaped shape as a whole so that both protrusions 28 extend from one band 30 from a position spaced upward.

  Each protrusion 28 may be formed of a rod-like body having a circular cross-sectional shape as a whole as in the illustrated example. However, instead of the illustrated example, it may have a polygonal cross-sectional shape such as a rectangle. Alternatively, it can be made of an elongated plate-like body.

  Each protrusion 28 preferably has a tapered surface 38 provided at the tip thereof. The tapered surface 38 is opposed to the virtual cylindrical surface, and the distance between the tapered surface 38 and the virtual cylindrical surface is such that the tip portion of the protruding portion 28 is the base portion (the portion connected to the band 30 or this). It is gradually decreasing toward the contacted part.

  These tapered surfaces 38 are present when there is a slight misalignment between the receptacle 20 and the outlet 24 opposite to each other, i.e. when the outlet 24 is located slightly offset from the common or substantially common axis. When the horizontal tube 12 is moved toward the vertical tube 14 to connect both the tubes 12, 14, the receiving port 20 of the horizontal tube slides on the tapered surfaces 38 of both protrusions and is suspended via the connection tool 10. The holding vertical tube 14 is displaced, and the vertical tube insertion port 24 is aligned to face the horizontal tube receiving port 20.

  The connection tool 10 preferably further has a hole 42 through which the rope 40 passes. In the illustrated example, the hole 42 is defined by a U-shaped ring 44 fixed to the one band 30.

  In the example shown in the figure, the ring 44 is located at the center between the two protrusions 28. In the example shown in FIG. 1, the ring 44 extends in the same direction as the extension direction of the two protrusions 28. In the example shown in FIG. Is growing. Instead of being defined by the ring 44, the hole 42 may be formed, for example, in one band 30 or a plate-like portion (not shown) connected to the band.

  The mutual connection of both the pipes 12 and 14 performed using the connecting device 10 can be performed as follows.

  First, the connection tool 10 is attached to the vertical tube 14, and in the case of the connection tool 10 having the hole 42, the rope 40 is further passed through the hole 42 from one end thereof.

  Next, the vertical pipe 14 to which the connection tool 10 is attached is inserted into the shaft 18 with the insertion port 24 facing downward, and is lowered (FIG. 3). These operations can be performed, for example, while one worker holds the vertical tube 14.

  The vertical tube 14 is lowered until the tip portions 28a (see FIG. 1 or 2) of the two projections 28 of the connection tool attached to the vertical tube 14 are placed on the top of the receiving port 20 of the horizontal tube (see FIG. 1). FIG. 4).

  At this time, when the two ridges 28 are not parallel to the horizontal pipe 12 when viewed from the ground in the shaft 18, that is, the receiving port 20 and the insertion port 24 are common or substantially the same. When not on a common axis, or when both protrusions 28 are not on a horizontal plane or are on a horizontal plane but they intersect the horizontal pipe 12, the one worker moves the vertical pipe 14 Such a state is eliminated. When the rope 40 is present, another worker pulls both ends of the rope 40 in the required direction, and the single worker moves the vertical tube 14 in that direction, so that both protrusions 28 can be quickly and easily moved. Can be in a parallel state.

  Thereafter, the horizontal tube 12 is moved toward the vertical tube 14 (FIG. 5). The horizontal tube 12 can be moved by pushing the horizontal tube 12 from another shaft (not shown) connected to the horizontal shaft 16 using, for example, a tube propulsion device having a hydraulic jack.

  Due to the movement of the horizontal tube 12, the vertical tube insertion port 24 is received in the receiving port 20, and the suspended vertical tube 14 moves together with the horizontal tube 12 and is pressed against the wall surface of the shaft 18. As a result, the outlet 24 is completely received in the receptacle 20 without excess or deficiency.

  Thereafter, in order to return the vertical pipe 14 to the central position of the shaft 18, a tensile force is applied to the horizontal pipe 12 from the other shaft and is pulled back slightly. Next, one end of the rope 40 is pulled on the ground, and the other end is pulled out from the hole 42 (see FIGS. 1 and 2) of the connection tool 10. The connection tool 10 is buried together with the vertical tube 14.

  Referring now to FIG. 6, another example connection tool according to the present invention is indicated generally by the reference numeral 50.

  The connection tool 50 includes a receiving portion 52 provided at a lower portion of the receiving port 20 of the horizontal tube 12 and a hole 42 provided in the vertical tube 14 for allowing the rope 40 to pass therethrough.

  The illustrated receiving portion 52 is formed of a plate-like body formed integrally with the lower portion of the receiving port 20. The plate-like body protruding from the lower portion of the receiving port 20 has the same inner and outer diameters as the receiving port 20. The horizontal pipe 12 having the receiving portion 52 is disposed in the horizontal shaft 16 so that the receiving portion 52 or a part of the receiving port 20 protrudes into the shaft 18.

  The illustrated receiving portion 52 has the same inner diameter as the outer diameter of the insertion port 50 of the vertical pipe. The receiving portion 52 is provided with a longitudinal pipe insertion port 50 that is lowered in the shaft 18 for connection to the horizontal pipe 12 and receives this.

  The hole 42 through which the rope 40 passes, which is a part of the connection tool 50, is attached to the same member (two bands 30 fastened by the fastening means 32) as the constituent member of the fixing portion 26 shown in FIG. Defined by the ring 44. In order to avoid duplication of explanation, the same reference numerals as those in FIG.

  The receiving portion 52 in the connection tool of this example is a plate-like body having a similar shape made of a member separate from the receiving port 20 of the horizontal tube, instead of the illustrated example, and this is an arbitrary fixture (not shown). ) To attach to the receptacle 20. In addition, the receiving portion is a plate formed by bending a flat plate into a V shape, for example, instead of the illustrated example in which this is a part of a cylindrical body, and a plate formed by forming two flat plates into a V shape. It can consist of a shape body etc.

  In connecting the pipes using the connection tool 50 of this example, first, the connection tools 50 are provided on the horizontal pipe 12 and the vertical pipe 14. In the case of the connecting tool 50 in the illustrated example, the pair of bands 30 in which the horizontal pipe 12 having the receiving portion 52 is disposed in the horizontal shaft 16 and the ring 44 is attached to the main body 22 of the vertical pipe are illustrated. Attached in the same manner as in the example shown in FIG.

  Next, after passing the rope 40 through the hole 42 of the ring 44, the vertical pipe 14 is suspended in the shaft 18, and the shaft 18 is placed until the insertion port 24 is placed on the receiving portion 50 of the horizontal pipe. Lower the inside. Then, as described above, the rope 40 is operated on the ground to move the vertical pipe 14 that is suspended so that the vertical slot 24 is correctly opposed to the horizontal pipe receptacle 20, and then The horizontal tube 12 is pushed toward the vertical tube 14. At this time, the receiving portion 50 and the receiving port 20 move in the axial direction along the outer peripheral surface of the insertion port 24. As a result, the vertical pipe 14 is pressed against the wall surface of the shaft 18, and the vertical pipe inlet 24 is received in the horizontal pipe receiving port 20 without excess or deficiency. Thereby, the connection of the vertical tube 14 to the horizontal tube 12 is completed.

  Thereafter, the horizontal pipe 12 is pulled back, the position of the vertical pipe 14 in the shaft 18 is corrected, the rope 40 is pulled up and collected on the ground, and the connection tool 50 is buried and left in the ground. This is the same as in the example shown in FIGS.

It is a perspective view of an example of a connection tool concerning the present invention. It is a perspective view of the other example of the connection tool which concerns on this invention. It is a figure which shows the process in which the vertical pipe | tube with which the connection tool shown in FIG. 1 was attached is lowered | hung within a shaft. It is a figure which shows the process in which the projection part of a connection tool is mounted in the top part of the receptacle of a horizontal pipe. It is a figure which shows the process of moving the horizontal pipe toward a vertical pipe. It is a perspective view of the further another example of the connection tool which concerns on this invention.

Explanation of symbols

10, 50 Connecting tool 12, 14 Horizontal pipe and vertical pipe 16, 18 Horizontal hole and shaft 20, 24

Claims (10)

A main shaft disposed in the shaft and an outlet connected to the main shaft in a horizontal pipe formed in the ground and communicating with each other and a horizontal pipe disposed in the horizontal shaft of the shaft and projecting into the shaft. A connecting tool used to connect a vertical pipe made of a bent pipe having
The connection tool includes an attachment portion for attaching the connection tool to the longitudinal tube, and two protrusions extending in parallel to each other extending from the attachment portion,
Both protrusions have an outer diameter of the horizontal tube or a diameter substantially equal to the outer tube as viewed in a state in which the connection tool is attached to the vertical tube, and are on the virtual cylindrical surface coaxial with the insertion port. A connecting tool that extends in parallel with the axis of the insertion slot and projects from the tip of the insertion slot.   Furthermore, the connection tool of Claim 1 provided with the hole for letting a rope pass.   The connection tool according to claim 2, wherein the hole is defined by a ring attached to the fixing portion.   The connection according to claim 1, wherein the fixing portion includes a pair of bands arranged so as to surround the main body or the insertion opening of the vertical pipe and fastening means for fastening the two bands to each other. Tools. A horizontal shaft formed in the ground and communicating with each other, and a horizontal pipe disposed in the horizontal shaft of the shaft and projecting into the shaft, having a receiving port, is inserted into the receiving port of the horizontal tube disposed in the shaft. A connecting tool used to connect a vertical pipe made of a bent pipe having an insertion opening,
The connection tool is provided at a lower portion of the horizontal tube receiving port, and a receiving portion for the vertical tube insertion port,
A connection tool including a hole for passing a rope provided in the vertical pipe. A method for connecting a vertical pipe made of a bent pipe having a slot to a horizontal pipe formed in the ground and communicating with each other, and a horizontal pipe having a receiving port disposed in the horizontal shaft of the shaft and projecting to the shaft. Because
Attaching the connecting tool according to claim 1 to the vertical pipe, suspending the vertical pipe in the shaft, until both protrusions of the connecting tool are placed on the top of the receptacle of the horizontal pipe Lowering the vertical tube, directing the vertical tube into the horizontal tube receiving port by operating the vertical tube on the ground, and moving the horizontal tube toward the vertical tube. Connection method. A method for connecting a vertical pipe made of a bent pipe having a slot to a horizontal pipe formed in the ground and communicating with each other, and a horizontal pipe having a receiving port disposed in the horizontal shaft of the shaft and projecting to the shaft. Because
The connection tool according to claim 2 or 3 is attached to the vertical pipe, a rope is passed through a hole of the connection tool, the vertical pipe is suspended in the shaft, and both protrusions of the connection tool are provided. Lowering the vertical tube until it is placed on the top of the horizontal tube receiving port, directing the vertical tube insertion port to the horizontal tube receiving port by operating the rope on the ground, and A connection method including moving toward the vertical pipe.   The connection method according to claim 7, further comprising collecting the rope on the ground. A method for connecting a vertical pipe made of a bent pipe having a slot to a horizontal pipe formed in the ground and communicating with each other, and a horizontal pipe having a receiving port disposed in the horizontal shaft of the shaft and projecting to the shaft. Because
The connecting tool according to claim 5 is provided on the horizontal pipe and the vertical pipe, a rope is passed through a hole of the connecting tool, the vertical pipe is suspended in the shaft, and an opening of the vertical pipe is provided. Lowering the vertical tube until it is placed on the horizontal tube receiving portion, directing the vertical tube to the horizontal tube receiving port by operating the rope on the ground, and moving the horizontal tube to the vertical tube A connection method comprising moving towards a tube.   The connection method according to claim 9, further comprising collecting the rope on the ground.

Images