JP6137603B2 - Excavator passage construction form and excavator passage construction method - Google Patents

Description

  The present invention relates to a passing portion construction form for an excavator and a passing portion construction method for an excavator. Specifically, the present invention relates to a formwork for constructing a passing part of an excavator in an intermediate shaft and a construction method for a passing part of an excavator using the formwork.

  There is a small-diameter propulsion method in which a small-diameter pipe is laid in the ground for sewerage and the like, and a propelling device is installed in the starting shaft and propelled while excavating the ground with an excavator toward the reaching shaft.

  In this small-diameter propulsion method, long-distance propulsion is possible due to recent technological evolution, and there are more cases of constructing intermediate shafts to provide intermediate manholes (for example, manholes) between the starting shaft and the reaching shaft. Yes.

  In the case where the intermediate shaft is provided in this way, when the excavator passes through the intermediate shaft, it is necessary to construct a passing portion of the excavator so that ground water and earth and sand do not flow into the intermediate shaft. .

Here, as a passing portion construction method for this type of excavator, for example, there is one described in Patent Document 1. Specifically, as shown in FIG. 10 (A), the short cylinder 105 is connected to the inlet 103 and the outlet 104 provided in the front and rear retaining wall portions 102 of the intermediate shaft 101 in a continuous manner.
Furthermore, after the opening end which the short cylinder 105 opposes is obstruct | occluded with the iron plate 106, the filling material 107 which consists of mortar in the short cylinder 105 is filled.

  Next, as shown in FIG. 10B, when the filling material 107 filled in the short cylinder 105 is solidified, the iron plate 106 is removed, and the intermediate cylinder 108 is welded between these short cylinders 105 by welding or the like. Connect and stick. The intermediate filling body 107 formed in this way is filled with the filling material 107 made of mortar. Thereby, the passage part of the excavator formed with the filling material 107 in the cylinder 109 is constructed.

Japanese Patent No. 3208085

  However, in the excavator passing portion construction method described in Patent Document 1, first, the short cylinder is filled with the filling material, and after the filling material is solidified, the intermediate cylinder is placed between the short cylinders facing each other. In order to construct the passing portion through the step of filling the filling material by interposing it, it takes a lot of labor and time.

  In addition, since the inner diameter of intermediate shafts varies depending on the type of propulsion work or the situation, workers must enter the intermediate shaft and form the excavator passage according to the inner diameter. is the current situation.

  The present invention was devised in view of the above points, and is provided with a passing portion construction form for an excavator and an excavator capable of constructing a passing portion that can be adjusted according to the inner diameter of the intermediate shaft. The object is to provide a passage construction method.

  In order to achieve the above object, the excavator construction frame for excavator according to the present invention has a predetermined opening that communicates with the first hole formed in the earth retaining wall of the intermediate shaft. A first joint portion and a second opening formed in communication with the second hole portion formed at the position of the earth retaining wall portion of the intermediate shaft facing the first hole portion. One end of the joint is slidably engaged with the first joint, and the other end is slidably engaged with the second joint, and the first joint is opened. An excavator passage portion in which a predetermined space portion formed in communication with the opening portion of the first joint portion and the opening portion of the second joint portion and the opening portion of the second joint portion is formed. Is provided.

  Here, one end of the excavator passage is slidably engaged with the first joint, and the other end of the excavator passage is slidably engaged with the second joint. By this, it becomes possible to adjust the length of the overall length of the mold formed by the first joint part, the second joint part, and the excavator passage part.

  In addition, a predetermined opening that communicates with the first hole is formed in the first joint, a predetermined opening that communicates with the second hole is formed in the second joint, and The predetermined hole portion formed in the excavator passage portion is in communication with the opening portion of the first joint portion and the opening portion of the second joint portion, whereby the first hole portion and the predetermined space portion are formed. And the second hole can be arranged in a continuous manner.

  Also, in the excavator passing portion construction form of the present invention, when the first joint portion has a flange portion formed on the opposite side of the end portion engaged with the excavator passage portion, the flange By attaching the part to the inner surface of the intermediate shaft, the first joint part can be easily arranged at a desired position.

  Further, in the excavator passing portion construction form according to the present invention, when the second joint portion has a flange portion formed on the opposite side of the end portion engaged with the excavator passage portion, a flange is provided. By attaching the part to the inner surface of the intermediate shaft, the second joint part can be easily arranged at a desired position.

  Further, in the excavator passing portion construction form of the present invention, when the excavator passage portion is configured to be divisible in the direction from one end portion of the excavator passage portion to the other end portion. After the excavator passing portion is constructed, the excavator passing portion can be removed.

  Also, in the excavator passing portion construction form of the present invention, when the first joint portion and the excavator passing portion are provided with a telescopic device that is telescopically connected, by using the telescopic device, It becomes possible to slide the 1st joint part in the direction of the 1st hole formed in the earth retaining wall part of an intermediate shaft.

  Further, in the excavator passing portion construction form of the present invention, when the second joint portion and the excavator passing portion are provided with an expansion / contraction device that can be expanded and contracted, by using the expansion / contraction device, The second joint portion can be slid in the direction of the second hole formed in the retaining wall portion of the intermediate shaft.

  Moreover, in the excavator construction frame for excavator of the present invention, when the excavator passage has a penetrating portion communicated with the space portion of the excavator passing portion, by using the penetrating portion, In addition, it becomes possible to perform filling of the interstitial material into the excavator passage.

Further, in the excavator passing portion construction form of the present invention, when the excavator passage portion has a hanging ring portion, the excavator passage portion is arranged or recovered in the intermediate shaft with a crane or the like. Is possible.

  Moreover, in order to achieve said objective, the passage part construction method of the excavator which concerns on this invention is using the 1st coupling part engaged with one edge part of the excavator passage part as the earth retaining wall part of an intermediate shaft. Slid in the direction of the first hole formed in the first joint portion, and the step of arranging the opening portion provided in the first joint portion and the first hole portion in communication with each other; The second joint engaged with the other end is slid in the direction of the second hole formed at the position of the retaining wall portion of the intermediate shaft facing the first hole, A step of arranging the opening provided in the second joint portion and the second hole portion in communication, an opening portion of the first joint portion, an opening portion of the second joint portion, and In a predetermined space portion of the excavator passage portion provided in communication with the opening portion of the first joint portion and the opening portion of the second joint portion, And a step of filling the write material.

  Here, the first joint portion engaged with one end portion of the excavator passage portion is slid in the direction of the first hole portion formed in the earth retaining wall portion of the intermediate shaft, so that the first joint portion The excavator passage portion can be attached in a communication manner to the first hole portion formed in the earth retaining wall portion of the intermediate shaft by arranging the opening portion provided in the first hole portion and the first hole portion in a continuous manner. it can.

  Further, the second joint portion engaged with the other end portion of the excavator passage portion is moved in the direction of the second hole portion formed at the position of the earth retaining wall portion of the intermediate shaft facing the first hole portion. The excavator is inserted into the second hole formed in the earth retaining wall portion of the intermediate shaft by sliding and arranging the opening provided in the second joint portion and the second hole portion in communication. The passage portion can be attached in a continuous manner.

  Furthermore, the opening part of the first joint part, the opening part of the second joint part, and the excavator passage part provided in communication with the opening part of the first joint part and the opening part of the second joint part By filling the predetermined space portion with the interstitial material, it is possible to construct a passing portion through which the excavator passes through the intermediate shaft.

  In the excavator passing portion construction method of the present invention, the flange portion formed on the opposite side of the end portion engaged with the excavator passing portion of the first joint portion is attached to the earth retaining wall portion of the intermediate shaft. In this case, the first joint portion can be easily disposed at a desired position.

  Further, in the excavator passing portion construction method of the present invention, the flange portion formed on the opposite side of the end portion engaged with the excavator passing portion of the second joint portion is attached to the earth retaining wall portion of the intermediate shaft. In this case, the second joint portion can be easily disposed at a desired position.

  Moreover, in the passage construction method of the excavator of the present invention, the step of arranging the first cradle on which the first joint portion can be placed on the retaining wall portion of the intermediate shaft, and the first cradle, When the step of placing the flange portion of the first joint portion is provided, the opening of the first joint portion can be easily positioned in the first hole portion formed in the earth retaining wall portion of the intermediate shaft. .

  Moreover, in the passage construction method of the excavator of the present invention, a step of arranging a second cradle on which the second joint portion can be placed on the retaining wall portion of the intermediate shaft, and a second cradle, When the step of placing the flange portion of the second joint portion is provided, the opening of the second joint portion can be easily positioned in the second hole portion formed in the earth retaining wall portion of the intermediate shaft. .

According to the passing part construction form of the excavator of the present invention, adjustment is possible according to the inner diameter of the intermediate shaft.
Moreover, according to the excavator passing portion construction method of the present invention, it is possible to construct the passing portion through which the excavator according to the inner diameter of the intermediate shaft can pass.

It is a mimetic diagram for explaining an example of a passage part construction form of an excavator to which the present invention is applied. It is a mimetic diagram for explaining an example of the 1st joint part and the 2nd joint part in a form for passage part construction of an excavator to which the present invention is applied. It is a schematic diagram for demonstrating the cut end surface of the principal part of the excavator passage part in the form for construction of the passage part of the excavator to which the present invention is applied. It is a schematic diagram for demonstrating an example of the 1st cradle and the 2nd cradle in the passing part construction method of the excavator to which this invention is applied. Schematic (A) and 1st hole for demonstrating the arrangement | positioning state of the 1st cradle and the 2nd cradle in the 1st process of an example of the passage part construction method of an excavator to which this invention is applied It is a schematic diagram (B) for demonstrating the construction state of a 2nd hole part. Schematic diagram (A) for explaining the suspended state of the passing part construction formwork in the second step of an example of the passing part construction method of the excavator to which the present invention is applied, and placement of the passing part construction formwork It is a schematic diagram (B) for demonstrating a state. It is a schematic diagram for demonstrating the 3rd process of an example of the passage part construction method of the excavator to which this invention is applied. The schematic diagram (A) for demonstrating the construction state of the excavator passage part in the 4th process of an example of the passage part construction method of an excavator to which this invention is applied, and for explaining the dismantling state of the excavator passage part It is a schematic diagram (B). It is a schematic diagram for demonstrating the 5th process of an example of the passage part construction method of the excavator to which this invention is applied. It is a schematic diagram for demonstrating an example of the passing part construction method of the conventional excavator.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view for explaining an example of a passing portion construction form of an excavator to which the present invention is applied.
FIG. 2 (A) is a schematic cross-sectional view for explaining an example of the first joint part and the second joint part in the passing part construction form of the excavator to which the present invention is applied, and FIG. 2 (B). These are side surface schematic diagrams for demonstrating an example of the 1st joint part and the 2nd joint part in the form for passage part construction of the excavator to which this invention is applied.

  FIG. 3A is a schematic diagram for explaining a cut end surface in FIG. 1A-A, and FIG. 3B is a schematic diagram for explaining a cut end surface in FIG. 1B-B.

  First, in the intermediate shaft A, a first hole portion 4 and a second hole portion 5 formed in the earth retaining wall portion 3 so as to pass an excavator (not shown) are arranged to face each other. .

  Here, the passing portion construction form 1 includes a first joint portion 2 disposed in the first hole portion 4, a second joint portion 6 disposed in the second hole portion 5, and these. The excavator passage portion 7 is disposed between the first joint portion 2 and the second joint portion 6.

  Further, the first joint portion 2 is slidably engaged with a cylinder 8 in which an opening 10 that can be inserted into the first hole 4 is formed, and an excavator passage portion 7 of the cylinder 8. It is comprised from the square-shaped flange part 9 formed in the opening end on the opposite side of the edge part.

  The second joint portion 6 is slidably engaged with a cylinder 8 in which an opening 10 that can be inserted into the second hole 5 is formed, and an excavator passage portion 7 of the cylinder 8. It is comprised from the square-shaped flange part 9 formed in the opening end on the opposite side of the edge part.

  Further, two telescopic rod receiving portions 11 are attached to the outer peripheral surfaces of the cylindrical body 8 of the first joint portion 2 and the second joint portion 6.

  Here, these telescopic rod receiving portions 11 are arranged at positions facing each other across the central axis of the cylinder 8 of the first joint portion 2 and the second joint portion 6.

  Further, the excavator passage portion 7 is configured such that a space portion 26 through which an excavator (not shown) can pass is formed at one end portion and the other end portion of the excavator passage portion 7. . Further, the length from one end of the excavator passage 7 to the other end is shorter than the inner diameter of the intermediate shaft A, and the inner diameter of the space 26 of the excavator passage 7 is the first joint portion 2. The outer diameter of the cylindrical body 8 of the second joint portion 6 is larger.

  With such a configuration, the tubular body 8 of the first joint portion 2 is slidably inserted into the space 26 at one end of the excavator passage 7 so that the excavator passage 7 The cylindrical body of the second joint portion 6 is slidably inserted into the space portion 26 at the other end portion.

  Here, the outer peripheral surface of the excavator passage part 7 is composed of four divided parts (12, 12A, 12B, 12C) along the direction from one end of the excavator passage 7 to the other end. ing.

  These divided portions (12, 12A, 12B, 12C) are formed with stepped portions 13 at both ends in the longitudinal direction, and penetrated with fastening members 25 such as bolts in a state where the stepped portions 13 are overlapped, It is set as the structure connected by fastening (refer FIG. 3 (A), (B)).

  Further, the excavator passage 7 is provided with a penetrating portion 14 that communicates with the space 26 in the interior of the excavator passing portion 7, and an intermediate material (not shown) such as mortar from the penetrating portion 14 into the excavator passing portion 7. 2) can be injected (see FIG. 3B).

  In addition, an expansion / contraction device 15 is disposed on the outer peripheral surface of the excavator passage portion 7 at a position facing the expansion rod receiving portions 11 of the first joint portion 2 and the second joint portion 6. In the expansion / contraction device 15, a screw rod member 17 is screwed to a cylindrical screw rod screwing portion 16 fixed to the outer peripheral surface of the excavator passage portion 7, and the tip of the screw rod member 17 has an extensible rod receiving portion 11. (See FIG. 1).

  Here, by rotating the screw rod member 17 to move the tip of the screw rod member 17 and bringing it into contact with the telescopic rod receiving portion 11, the first joint portion 2 and the first joint portion 2 are formed from both sides of the excavator passage portion 7. Two joint parts 6 slide, and it is set as the structure which can adjust the full length of the frame 1 for passage part construction.

  Moreover, the suspension ring part 18 is attached to the upper end of both sides of the excavator passage part 7 so that it can be suspended by a crane (not shown) or the like.

Next, FIG. 4 is a schematic diagram for explaining an example of a first cradle and a second cradle in the excavator passing portion construction method to which the present invention is applied.
The first cradle and the second cradle are provided when the first joint portion of the passage portion construction form is attached to the first hole portion and the second joint portion is attached to the second hole portion. It is a stand.

  Here, the 1st receiving stand 20 is attached to the lower part of the 1st hole part (not shown) of the retaining wall part 3, and the 2nd receiving stand 20A is the 2nd hole of the retaining wall part 3. It is attached to the lower part of the part (not shown).

  Furthermore, the first cradle 20 and the second cradle 20A have a lower end length of a flange portion (not shown), and a back end 21 in contact with the inner peripheral surface of the earth retaining wall portion 3 The shape is along the inner peripheral surface of the wall 3.

  Further, guide rails 23 are erected at right angles along both side ends of the first cradle 20 and the second cradle 20A.

  Further, when the flange portion 9 of the first joint portion 2 is placed on the first cradle 20 and the flange portion 9 of the second joint portion 6 is placed on the second cradle 20A, the earth retaining wall portion 3 first hole portion 4 and second hole portion 5 and opening portions 10 of first joint portion 2 and second joint portion 6 are configured to be on the same axis (see FIG. 1). .

  The first cradle 20 and the second cradle 20 </ b> A have the rear end 21 fixed by welding or the like along the inner peripheral surface of the earth retaining wall 3, and the first cradle 20 and the second cradle 20. By arranging a plurality of supporting ribs 24 on the lower side surface of 20 </ b> A between the inner peripheral surface of the retaining wall portion 3, the structure can be attached horizontally.

  In the present embodiment, the first joint portion has a flange portion formed on the opposite side of the end portion engaged with the excavator passage portion, but the necessity for having the flange portion is not necessarily required. Absent.

  However, it is desirable to have a flange portion in that the first joint portion can be easily arranged in the first hole portion opened in the earth retaining wall portion.

  Further, in the present embodiment, the second joint portion has a flange portion formed on the opposite side of the end portion engaged with the excavator passage portion, but the necessity of having the flange portion is not necessarily required. Absent.

  However, it is desirable to have a flange portion in that the second joint portion can be easily arranged in the second hole portion opened in the earth retaining wall portion.

  Further, in the present embodiment, the excavator passage portion is configured to be divisible in the direction from one end portion of the excavator passage portion to the other end portion, but is not necessarily divided. There is no need to.

  However, it is desirable to have a structure that can be divided in that the excavator passage portion can be disassembled and removed after the pipe laying in the intermediate shaft.

  Moreover, in this Embodiment, although it is provided with the expansion-contraction apparatus which connects a 1st coupling part and an excavator passage part so that expansion-contraction is possible, for example, a 1st coupling part is the direction of a 1st hole. It is not always necessary to provide a telescopic device as long as it can be slid.

  However, it is desirable to provide an expansion / contraction device in that the first joint portion can be attached by being slid in the direction of the first hole by the expansion / contraction device so as to be pressed against the earth retaining wall portion.

  Moreover, in this Embodiment, although it is provided with the expansion-contraction apparatus which connects a 2nd joint part and an excavator passage part so that expansion-contraction is possible, for example, a 2nd joint part is the direction of a 2nd hole part. It is not always necessary to provide a telescopic device as long as it can be slid.

  However, it is desirable to provide an expansion / contraction device in that the expansion / contraction device can be attached so that the second joint portion is slid in the direction of the second hole and pressed against the retaining wall portion.

  Moreover, in this Embodiment, in order to inject | pour intruding material, it has a penetration part in an excavator passage part, but it does not necessarily need to have a penetration part.

  For example, it is possible to inject the insert material from between the first joint portion and the second joint portion and the retaining wall portion, but in that the insert material can be reliably filled into the excavator passage portion. It is desirable to have a penetration.

  In the present embodiment, the excavator passage has a hanging ring part, but it is not always necessary to have the hanging ring part.

  However, it is desirable to have a suspension ring in that it can be easily suspended by a hook such as a crane.

  As shown in FIGS. 1 to 3, in the excavator construction form of the excavator according to the present invention having the above-described configuration, the cylinder 8 of the first joint 2 and the cylinder 8 of the second joint 6. Can be connected in a slidable state by being inserted into the space portions 26 on both sides of the excavator passage portion 7.

  Further, the tip of the threaded rod member 17 threaded through the threaded rod threaded portion 16 of the telescopic device 15 attached to the excavator passing portion 7 is connected to the cylindrical body 8 and the second body 2 of the first joint portion 2. It is made to contact | abut to the expansion-contraction rod receiving part 11 of the cylinder 8 of the joint part 6. FIG.

  By rotating the screw rod member 17 from this state, the cylindrical body 8 and the second joint portion 6 of the first joint portion 2 are slid and the passage portion construction form 1 corresponding to the inner diameter of the intermediate shaft A is changed. The length can be adjusted.

  Furthermore, the flange part 9 of the 1st joint part 2 and the 2nd joint part 6 is pressed by pressing the expansion rod receiving part 11 of the 1st joint part 2 and the 2nd joint part 6 with the screw rod member 17 front-end | tip. It becomes possible to press-contact both ends of this to the earth retaining wall part 3 of the intermediate shaft A. Thereby, it becomes possible to easily install the passing portion construction form 1 in the intermediate shaft A.

Next, an example of a passing portion construction method for an excavator using the excavator passing portion construction form to which the present invention is applied will be described in detail below.
FIG. 5A is a schematic diagram for explaining the arrangement state of the first cradle and the second cradle in the first step of an example of the passing portion construction method of the excavator to which the present invention is applied, FIG. (B) is a schematic diagram for demonstrating the construction state of the 1st hole part and 2nd hole part in the 1st process of an example of the passage part construction method of an excavator to which this invention is applied.

[First step]
First, as shown in FIG. 5 (A), the passage center line of the excavator B is measured on the earth retaining wall portion 3 of the intermediate shaft A, and the first end is formed at the lower end of the region G that becomes the first hole portion 4. The cradle 20 is attached. Moreover, the 2nd receiving stand 20A is attached to the lower end of the area | region H used as the 2nd hole part 5, and a mounting base is set to the approximate center position between this 1st receiving stand 20 and the 2nd receiving stand 20A. Place C.

  Next, the first joint portion 2 and the second joint 2 in FIG. 2 are passed from the passing center line of the excavator B to the region G to be the first hole portion and the region H to be the second hole portion of the retaining wall portion 3. Marking is performed so as to be slightly larger than the inner diameter of the opening 10 of the joint 6.

  Further, as shown in FIG. 5B, the first hole 4 and the second hole 5 are opened in the retaining wall 3 by cutting along the marking by fusing.

  FIG. 6A is a schematic diagram for explaining a suspended state of a passing portion construction formwork in the second step of an example of the passing portion construction method of the excavator to which the present invention is applied, and FIG. It is a schematic diagram for demonstrating the mounting state of the passage part construction formwork in the 2nd process of an example of the passing part construction method of the excavator to which this invention is applied.

[Second step]
First, as a preparation before putting the passing part construction form (not shown) into the intermediate shaft A, both inner peripheral surfaces of the excavator passing part 7, the first joint part 2 and the second joint part 6 are provided. A lubricant (not shown) that expands by reacting with water is applied to the outer peripheral surface of the cylinder 8.

  Subsequently, the first joint portion 2 is slid in the direction of the first hole portion 4 so that the clearance between the opening 10 end of the first joint portion 2 and the earth retaining wall portion 3 is about 5 cm. adjust.

  Further, the second joint portion 6 is slid in the direction of the second hole portion 5 so that the clearance between the opening 10 end of the second joint portion 6 and the earth retaining wall portion 3 is about 5 cm. To do.

  Next, as shown in FIG. 6 (A), a hoisting machine (not shown) such as a crane is used to attach the tip of the wire D to the hanging ring portion 18 disposed at the upper end of the excavator passage portion 7. A hook (not shown) is hooked to suspend the passage portion construction form 1 horizontally.

  Subsequently, as shown in FIG. 6B, the lower end of the flange portion 9 of the first joint portion 2 is placed on the first cradle 20 and the lower end of the flange portion 9 of the second joint portion 6 is placed on the second. The excavator passage portion 7 is placed on the mounting table C on the receiving table 20A.

  FIG. 7 is a schematic diagram for explaining a third step of an example of a passing portion construction method for an excavator to which the present invention is applied.

[Third step]
Here, the screw rod member 17 of the expansion / contraction device 15 arranged on both outer peripheral surfaces of the excavator passage portion 7 is rotated to press the expansion rod receiving portions 11 of the first joint portion 2 and the second joint portion 6. .

Thereby, the flange part 9 of the first joint part 2 slides on the first retaining base 20 to the retaining wall part 3 side, and both ends of the flange part 9 are pressed against the retaining wall part 3. Become.
Further, the flange portion 9 of the second joint portion 6 slides on the second receiving base 20 </ b> A toward the retaining wall portion 3, and both side ends of the flange portion 9 are pressed against the retaining wall portion 3. .

At this time, the lower end of the flange portion 9 of the first joint portion 2 is in pressure contact with the first cradle 20 surface, and both ends of the flange portion 9 are in pressure contact with the earth retaining wall portion 3. It is fixed by welding.
Further, the lower end of the flange portion 9 of the second joint portion 6 is in pressure contact with the surface of the second cradle 20A, and both side ends of the flange portion 9 are welded to the earth retaining wall portion 3 while being in pressure contact with the earth retaining wall portion 3. And stick.

  Moreover, the opening part (not shown) of the upper end of the flange part 9 and the earth retaining wall part 3 puts the iron plate processed according to the shape of the opening part on the opening part, and fixes it by welding.

Thereby, the 1st hole part 4 and the 2nd hole part 5 of the earth retaining wall part 3 of the intermediate shaft A will be in the state connected in the communication form in the form part 1 for passage part construction.
Note that some gaps are made watertight with a sealant.

  In this way, after the passing section construction form 1 is mounted in the intermediate shaft A, the excavating ability of the excavator B such as ready-mixed concrete, mortar, or soil cement is obtained from the through portion 14 of the excavator passing section 7. An intruding material E having a strength not exceeding is injected into the excavator passage 7.

  FIG. 8A is a schematic diagram for explaining the construction state of the excavator passage portion in the fourth step of an example of the excavator passage portion construction method to which the present invention is applied, and FIG. 8B shows the present invention. It is a schematic diagram for demonstrating the dismantling state of the excavator passage part in the 4th process of an example of the passing part construction method of the applied excavator.

[Fourth step]
Here, as shown in FIG. 8 (A), when the insertion work of the insertion material E into the passing portion construction form 1 is completed, the penetration portion 14 is covered with a lid (not shown) and sealed with a bolt or the like. Then, curing the inlay material E (5 to 20 hours).

  When the medium insert E is cured in this way and the intermediate insert E is solidified and has an appropriate strength, the excavator B stopped immediately before the intermediate shaft A is restarted and the passing section construction form 1 Pass through the inside and perform normal propulsion up to the reaching shaft (not shown). Along with this, the laying pipe F is laid down to the reach shaft (not shown).

  In this case, if the intermediate material E strength in the passing portion construction form 1 is approximately the same as that of the ground, it can be promoted without any problem.

  In addition, in order to prevent the inflow of groundwater into the intermediate shaft, the construction is more careful by filling the intermediate shaft with river water or the like to the level of the groundwater level and curing the intermediate material.

  Subsequently, as shown in FIG. 8 (B), after the excavator is collected at the reaching shaft (not shown), the screw rod member 17 of the telescopic member 15 in FIG. 1 is loosened to constitute the excavator passage 7. The fastening member 25 that connects the divided parts (12, 12A, 12B, 12C) to be removed is removed and disassembled to be removed from the intermediate shaft A.

  In this case, the first joint portion 2 and the second joint portion 6 are left as wellhead reinforcements for the first hole portion 4 and the second hole portion 5.

  FIG. 9 is a schematic diagram for explaining a fifth step of an example of a passing portion construction method for an excavator to which the present invention is applied.

[Fifth step]
Here, the intermediate material between the first joint part 2 and the second joint part 6 with the intermediate material E in the cylinder 8 of the first joint part 2 and the second joint part 6 left. E is removed, and water leakage from the surface of the first joint portion 2 and the second joint portion 6 side end portion where the interstitial material E and the laying pipe F are in contact is treated with a water stop material or the like.

Finally, a cut opening is made in the laying pipe F in accordance with the manhole, a manhole (not shown) is connected, and the earth and sand are backfilled in the intermediate shaft A to complete the operation.
The removed excavator passage will be reused in a new intermediate shaft after cleaning and maintenance. In addition, the intermediate material of the first joint portion and the second joint portion side end portion has sufficient strength to prevent inflow of groundwater and natural soil and sand since at least 20 days have passed since the introduction. .

  In the present embodiment, the first joint portion having the flange portion formed on the opposite side of the opening portion of the first joint portion is connected to the retaining wall portion of the intermediate shaft. However, it is not always necessary to arrange in such a state.

  However, the flange portion formed in the first joint portion is in contact with the earth retaining wall portion in that it can be arranged in a continuous manner without directly connecting the opening portion of the first joint portion to the first hole portion. It is desirable to arrange in a state.

  Further, in the present embodiment, the second joint portion having the flange portion formed on the opposite side of the opening portion of the second joint portion is connected to the retaining wall portion of the intermediate shaft. However, it is not always necessary to arrange in such a state.

  However, the flange part formed in the second joint part is the retaining wall part of the intermediate shaft in that the second hole part can be arranged in a continuous manner without directly connecting the opening part of the second joint part to the second hole part. It is desirable to arrange it in contact with

  Moreover, in this Embodiment, although the 1st cradle in which the lower end of the flange part of a 1st coupling part can be mounted in the retaining wall part of an intermediate shaft is arrange | positioned, it is not necessarily the 1st cradle. There is no need to place the wall on the retaining wall.

  However, the first cradle is provided in that the opening of the first joint portion can be easily positioned in the first hole portion by placing the flange portion of the first joint portion on the first cradle. It is desirable to place the wall on the retaining wall.

  Moreover, in this Embodiment, although the 2nd receiving stand in which the lower end of the flange part of a 2nd coupling part can be mounted in the earth retaining wall part of an intermediate shaft is arrange | positioned, it is not necessarily the 2nd receiving stand. There is no need to place the wall on the retaining wall.

  However, the first cradle is provided in that the opening of the second joint portion can be easily positioned in the second hole portion by placing the flange portion of the second joint portion on the second cradle. It is desirable to place the wall on the retaining wall.

  In the excavator passing portion construction method of the present invention having the above configuration, as shown in FIGS. 5 to 9, the cylindrical body 8 of the first joint portion 2 and the cylindrical body 8 of the second joint portion 6 are By inserting into the space part 26 of the both sides of the excavator passage part 7, it can reduce from the internal diameter of an intermediate shaft, and it becomes possible to carry in into the intermediate shaft by a crane etc.

  Further, the length of the passing portion construction form 1 according to the inner diameter of the intermediate shaft A by sliding the first joint portion 2 and the second joint portion 6 with the expansion / contraction device 15 attached to the excavator passage portion 7. Adjustment can be performed.

  Thereby, it becomes possible to easily construct the passing portions according to various intermediate shafts A having different inner diameters.

  Furthermore, it becomes possible to press-contact both ends of the flange portion 9 of the first joint portion 2 and the second joint portion 6 to the earth retaining wall portion 3 of the intermediate shaft A. Thereby, it becomes possible to easily install the passing portion construction form 1 in the intermediate shaft A.

  In addition, the first cradle 20 and the second cradle 20A are disposed below the first hole 4 and the second hole 5 below the first hole 4 in the intermediate shaft A. It becomes easy to position the opening and the opening of the second joint.

  Moreover, the excavator passage portion is filled by filling the inside form 1 for the passage portion construction, and removing and removing the excavator passage portion 7 after the excavator B is collected at the reaching shaft (not shown). 7 can be reused.

DESCRIPTION OF SYMBOLS 1 Form for construction of passage part 2 First joint part 3 Earth retaining wall part 4 First hole part 5 Second hole part 6 Second joint part 7 Excavator passage part 8 Tubular body 9 Flange part 10 Opening part 11 Telescopic bar receiving parts 12, 12A, 12B, 12C Dividing part 13 Step part 14 Passing part 15 Telescopic device 16 Screw bar screwing part 17 Screw bar member 18 Suspension ring part 20 First receiving base 20A Second receiving base 21 Back side End 23 Guide rail 24 Supporting rib 25 Fastening member 26 Space

Claims (5)

A first joint portion having a first opening formed at a predetermined position on the outer peripheral surface, the predetermined opening portion being in communication with the first hole portion formed in the earth retaining wall portion of the intermediate shaft,
A predetermined opening that communicates with the second hole formed at the position of the retaining wall portion of the intermediate shaft facing the first hole is formed, and a second expansion and contraction is formed at a predetermined position on the outer peripheral surface. A second joint portion having a rod receiving portion ;
One end portion is slidably engaged with the first joint portion, the other end portion is slidably engaged with the second joint portion, and the first end portion is arranged on the outer peripheral surface on the one end side. A first threaded rod screwing portion provided at a position corresponding to one telescopic rod receiving portion, and an outer peripheral surface on the other end side provided at a position corresponding to the second telescopic rod receiving portion. An excavator passage portion having a second threaded rod screw attachment portion and formed with a predetermined space portion communicating with the opening portion of the first joint portion and the opening portion of the second joint portion; ,
A first screw rod member that is inserted through the first screw rod screw attachment portion and has a tip abutting on the first telescopic rod receiving portion;
A second threaded rod member penetratingly inserted through the second threaded rod threaded portion and having a tip abutting against the second telescopic rod receiving portion ; The form for construction of a passing portion of an excavator according to claim 1, wherein the first joint portion has a flange portion formed on an opposite side of an end portion engaged with the excavator passing portion. The formwork for passing portion construction of an excavator according to claim 1 or 2, wherein the second joint portion has a flange portion formed on an opposite side of an end portion engaged with the excavator passage portion. . The excavator passage according to claim 1, claim 2, or claim 3, wherein the excavator passage portion is configured to be divided in a direction from the one end portion to the other end portion of the excavator passage portion. Forms for construction of passing parts of machines. The excavator passage has a penetrating portion communicating with a space portion of the excavator passage.
The form for construction of the passing part of the excavator according to any one of claims 1 to 4.

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