JP2018165445A - Temporary fixing pin of perforated pipe and method of constructing multi-stage drain pipe using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary fixing pin for perforated pipes which can collectively arrange a plurality of perforated pipes having different pipe diameters without requiring packaging and the like, is free from anxiety about load collapse at the time of transportation, and is easy to be attached and detached.SOLUTION: In the state that all pipes of a plurality of perforated pipes having different pipe diameters are inserted into a pipe having the maximum diameter, a temporary fixing pin 1 of a removable perforated pipe which temporarily fixes the sliding movement of the plurality of perforated pipes by being inserted into holes of all the pipes of the plurality of perforated pipes includes: a grip portion 2 gripped and grasped during insertion and removal; and a leg portion 3 connected to the grip portion 2 and having one end folded back. The leg portion 3 is provided with: a linear guide portion 30 which is provided at a tip not connected to the grip portion 2 and serves as a guide when passing through the holes of the respective pipes of the plurality of perforated pipes; an engaging portion 31 connected to the guide portion 30 and engaged with the hole of the pipe of any of the plurality of perforated pipes; and a linear temporary fixing portion 32 connected to the engaging portion 31 and having a length inserted through all the pipes of the plurality of perforated pipes.SELECTED DRAWING: Figure 5

Description

  In the present invention, all of the plurality of perforated pipes (perforated pipes) having different pipe diameters are inserted into the holes of the plurality of perforated pipes in a state where all the pipes are inserted into the maximum diameter pipe. The present invention relates to a temporary fixing pin for an insertable / removable perforated tube that temporarily fixes the sliding movement of the perforated tubes of the number. More specifically, the present invention relates to a multistage drainage pipe that temporarily fixes a multistage drainage pipe in which a plurality of perforated pipes having different diameters, each having a hole for drainage, are slidably fitted into each other during transportation. The present invention relates to a temporary fixing pin for use, and a construction method of a multistage drainage pipe using the pin.

  Conventionally, multi-stage drainage pipes that have been multi-staged to reduce the resistance when driving in drainage pipes that prevent ground collapse by draining groundwater flowing in the slopes of soil such as cut, banking, and natural slopes. Are known.

  For example, in Patent Document 1, in a drainage pipe 1 having a tubular body that is driven into the slope of the earth and sand portion 5 and has a drain hole formed in the peripheral wall, the inner diameter of the tip portion 12 is reduced from the root portion. A first tubular body 10, a main pipe portion 21 having a diameter smaller than the inner diameter of the distal end portion 12 of the first tubular body 10, and a second tubular body 20 having a root portion 24 having a diameter larger than the inner diameter. The second tubular body 20 is configured such that the main pipe portion 21 can protrude from the first tubular body 10 while the root portion 24 is locked to the distal end portion 22 in the first tubular body 10 to be inserted. A multistage drainage pipe 1 is disclosed (see claim 1 of patent document 1 and paragraphs [0020] to [0029] of FIGS. 1 to 4 of the drawings, etc.).

  Conventionally, such multistage drainage pipes have all the maximum diameters so that multiple perforated pipes do not slide out and protrude when they are transported from the production factory to the construction site. It was necessary to pack the end of the tube with tape, wrapping paper, etc. in a state of being packed together in the tube. For this reason, there is a problem that it takes time for packing and also takes time for removing the packing at the construction site.

  In addition, when unloading the multistage drain pipe from the transport vehicle and moving to the construction site, it may be difficult to move the multistage drain pipe due to tearing of the packing at the pipe end before arriving at the construction site. There was also.

  In Patent Document 2, in a perforated drainage pipe 1 made of a synthetic resin such as a vinyl chloride pipe buried in the ground in order to exclude groundwater, permeated water, etc., it is inserted with a pin 6 through a long hole 5. A perforated drainage pipe is disclosed in which the perforated drainage pipes 1 are not detached even when the ground is fluctuated due to expansion and contraction of the pipe, ring pressure or the like (No. 1 in the specification of Patent Document 2). (Refer to page 8, lines 8 to 19 and FIG. 4).

  However, the pin 6 of the perforated drainage pipe 1 described in Patent Document 2 cannot be applied to temporarily fix it during transportation, and cannot solve the above problem.

JP2015-166519A Japanese Utility Model Publication No. 63-35066

  Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to collect a plurality of perforated pipes having different pipe diameters without the need for packaging or the like, An object of the present invention is to provide a temporary fixing pin for a perforated pipe that is not worried about collapse of goods during transportation and can be easily attached and detached, and a construction method for a multistage drainage pipe using the pin.

  A temporary fixing pin for a perforated pipe according to a first aspect of the present invention is the hole of all the plurality of perforated pipes in a state where all of the plurality of perforated pipes having different pipe diameters are inserted into the maximum diameter pipe. A temporary fixing pin of a removable perforated tube that temporarily fixes the sliding movement of the number of perforated tubes by being inserted into the gripper, and grips and grips at the time of insertion and removal, and A leg portion that is connected to the grip portion and whose one end is folded back, and the leg portion is provided at a tip that is not connected to the grip portion and is inserted into a hole of each of the plurality of perforated tubes. A linear guide portion serving as a guide, a locking portion connected to the guide portion and locked to the hole of any one of the plurality of perforated tubes, and connected to the locking portion And a linear temporary fixing portion having a length inserted through all of the plurality of perforated tubes.

  The temporary fixing pin of the perforated pipe according to the second invention is the first invention, wherein the locking part is inclined with respect to the shaft of the wire of the guide part and the temporary fixing part and contacts the hole during insertion. It has an inclined portion, a second inclined portion that is inclined with respect to the shaft of the wire rod of the guide portion and the temporary fixing portion and abuts on the hole when pulled out.

  A temporary fixing pin for a perforated tube according to a third aspect of the present invention is the side of the first or second aspect, wherein the leg portion is provided with a pair of left and right ends by folding back both ends of the grip portion, and one end is opened as a whole. It is characterized by a U-shape.

  According to a fourth aspect of the present invention, there is provided the temporary fixing pin for a perforated tube according to the third aspect, wherein the locking portion is provided on each of the pair of left and right legs, and the distance from the open end of the legs is set. They are formed at the same position.

  A temporary fixing pin for a perforated pipe according to a fifth invention is the temporary fixing pin according to the third invention, wherein the locking portion is provided on each of the pair of left and right legs, and the distance from one end of the legs that is opened is It is characterized by being formed at different positions.

  A temporary fixing pin for a perforated tube according to a sixth aspect of the present invention is the third to fifth aspects of the present invention, wherein the locking portion is provided on each of the pair of left and right legs, and the wire rod of the locking portion is The direction protruding from the shaft is symmetrical.

  A temporary fixing pin for a perforated pipe according to a seventh aspect of the present invention is the third aspect or the fifth aspect, wherein the locking portion is provided on each of the pair of left and right legs, and the wire rod of the locking portion is The direction protruding from the shaft is asymmetrical in the left-right direction.

  According to an eighth aspect of the present invention, there is provided a method for constructing a multistage drainage pipe, wherein a plurality of perforated pipes having different diameters and having holes for drainage are respectively fitted into the ground so that they can be projected and retracted. In the construction method of the multistage drainage pipe to penetrate, using the temporary fixing pin of the perforated pipe according to any one of claims 1 to 7, the holes in all the pipes of the multistage drainage pipe before transporting The temporary fixing pin is inserted immediately before the multi-stage drainage pipe is inserted into the ground through the legs, the latching section being latched in the hole of any one of the pipes of the multi-stage drainage pipe and transported. It is characterized by pulling out.

  According to the first to seventh inventions, all of the plurality of perforated tubes having different tube diameters are collectively fixed in a state where they are inserted into the maximum diameter tube, and temporarily fixed with a temporary fixing pin. A plurality of perforated pipes having different pipe diameters can be grouped together. Moreover, while the latching | locking part of a temporarily fixed pin is latched by the hole of one of several perforated pipes, the slide movement of tubes is restrained by the temporarily fixed part. Therefore, it is possible to reliably prevent an accident in which a part of the plurality of perforated pipes is inadvertently protruded without worrying about collapse of goods during transportation. Further, since the temporary fixing pin can be slid between the pipes simply by gripping and pulling the gripping portion, it is not necessary to remove the packaging at the construction site.

  In particular, according to the second invention, since the inclined portion is formed both in the insertion direction and in the drawing direction, the temporary fixing pin can be inserted and removed very easily in a short time.

  In particular, according to the third aspect of the invention, the temporary fixing pin as a whole has a U-shaped side view with one end open, so that the temporary fixing pin is locked by two holes. The risk of inadvertent falling off is reduced.

  In particular, according to the fourth aspect of the present invention, since the locking portions of the temporary fixing pins are provided at the same height, the temporary fixing pins can be easily inserted and pulled out.

  In particular, according to the fifth aspect, since the locking portions of the temporarily fixing pins are provided at different heights, the pipes on which the locking portions are locked are different. Therefore, it is possible to reduce the possibility that the temporarily fixing pin rattles due to vibration or the like.

  In particular, according to the sixth invention, since the protruding direction of the locking portion is symmetrical, the labor for processing the left and right locking portions can be done in one time, and the number of processing steps can be reduced to produce the temporary fixing pin. Cost can be reduced.

  According to the eighth invention, the multi-stage drain pipe can be easily and safely transported to the construction site and carried in, and an accident in which a part of the multi-stage drain pipe protrudes can be reliably prevented. .

It is sectional drawing which showed typically the state installed in the ground which inclined the multistage type drain pipe which concerns on this embodiment in the vertical cross section. It is a perspective view which shows the multistage type drainage pipe which concerns on embodiment of this invention. It is a side view which abbreviate | omits the multistage type drainage pipe same as the above and shows. It is a partial cutaway sectional view which shows the joint shape which is a joined part of an outer pipe and a middle pipe of a multistage type drainage pipe same as the above, the middle pipe part is shown in a section, and the middle pipe part is shown in a side view. It is a perspective view which shows the temporary fixing pin of the perforated tube which concerns on 1st Embodiment of this invention. It is a front view which shows the temporary fixing pin of the porous tube same as the above. It is a front view which shows the modification of the holding part of the temporarily fixed pin of this invention, (a) is the temporarily fixed pin which concerns on the modification 1, (b) is the temporarily fixed pin which concerns on the modified example 2, (c) is deformed. The temporary fixing pin concerning Example 3 is shown. It is a front view which shows the modification of the leg part of the temporarily fixing pin of this invention, (a) is the temporarily fixing pin which concerns on the modification 1, (b) is the temporarily fixing pin which concerns on the modification 2, (c) is deformed. The temporary fixing pin concerning Example 3 is shown. It is a front view which shows the modification of the leg part of the temporary fixing pin of this invention, (a) has shown the temporary fixing pin which concerns on the modification 4, (b) has shown the temporary fixing pin which concerns on the modification 5. FIG. It is an enlarged side view of the multistage type drainage pipe which shows the insertion method of the temporary fixing pin which concerns on this embodiment. It is an expanded sectional view of the multistage type drainage pipe which shows the state where the temporary fixing pin was inserted. It is a flowchart which shows each process of the construction method of the multistage type drainage pipe which concerns on this embodiment. It is a side view which shows the state at the time of conveyance of the multistage type drainage pipe in the construction method of a multistage type drainage pipe same as the above, and omits intermediate. It is a photograph which shows the mount installation process of the construction method of a multistage type drain pipe same as the above. It is process explanatory drawing which shows the 1st extrusion process of the construction method of a multistage type pipe same as the above. It is process explanatory drawing which shows the 2nd extrusion process of the construction method of a multistage type pipe same as the above. It is process explanatory drawing which shows the 3rd extrusion process of the construction method of a multistage type pipe same as the above.

  Hereinafter, a temporary fixing pin for a perforated pipe according to an embodiment of the present invention and a construction method for a multistage drainage pipe using the pin will be described in detail with reference to the drawings.

<Multistage drainage pipe>
First, with reference to FIGS. 1 to 4, a multistage drainage pipe will be briefly described as an example of a perforated pipe temporarily fixed with a temporary fixing pin of a perforated pipe according to the present invention.

  FIG. 1 is a cross-sectional view schematically showing a state in which a multistage pipe according to this embodiment is installed on an inclined ground surface in a vertical cross section. As shown in FIG. 1, the multistage drainage pipe 10 that is a perforated pipe according to the present embodiment is not yet covered with cement or the like in earthwork structures such as embankments and cuts such as railways, roads, and residential land. Penetration into the soil slope of the covering And this multistage drain pipe 10 drains groundwater, suppresses the rise of the groundwater level at the time of rain, and dissipates excess pore water pressure at the time of an earthquake, thereby improving the rain resistance and earthquake resistance of the slope. It has a function. Of course, this multistage drainage pipe 10 can be applied not only to artificial slopes such as earthwork structures but also to natural slopes such as hills and steps.

  This multistage drainage pipe 10 is provided with three pipes of large, medium and small diameters, each having a length of about 2 m made of a highly corrosion-resistant plated steel pipe having a thickness of 2.3 mm. As shown in FIGS. 2 and 3, the multistage drain pipe 10 includes an outer tube 11 that is the largest diameter tube, an intermediate tube 12, an inner tube 13 that is the smallest diameter tube, and a tip of the inner tube 13. It is comprised from the front-end | tip cap 14 etc. which are mounted | worn. For this reason, the intermediate tube 12 can be accommodated in the outer tube 11, and the inner tube 13 can be accommodated in the intermediate tube 12.

  In addition, as shown in FIGS. 3 and 4, the outer pipe 11, the intermediate pipe 12, and the inner pipe 13 are provided with a large number of water collecting holes H <b> 1 through which ground water and excess interstitial water are permeable in common. It is possible to drain a lot of water at once. For this reason, it can cope with recent abnormal rainfall.

  FIG. 4 shows a joint shape which is a joint portion between the outer tube 11 and the middle tube 12 of the multistage drain pipe 10 according to the present embodiment, the outer tube 11 is shown in cross section, and the middle tube 12 is shown in a side view. FIG. As shown in FIG. 4, the distal end portion of the outer tube 11 is gradually reduced in diameter through a tapered portion, and the rear end portion of the intermediate tube 12 is gradually expanded in diameter through the tapered portion. Moreover, it is comprised so that the front-end | tip part of the outer tube | pipe 11 and the rear-end part of the middle pipe | tube 12 may mutually fit in a taper part at the time of expansion | extension.

  Similarly, the distal end portion of the intermediate tube 12 is reduced in diameter, and the rear end portion of the inner tube 13 is expanded in diameter, and when extended, the distal end portion of the intermediate tube 12 and the rear end portion of the inner tube 13 are mutually connected. It is the structure which fits and can be inserted and retracted freely. The front end refers to the end of the tube body in the traveling direction (penetration direction) when the multistage drain pipe 10 is pushed out and penetrated into the ground, and the rear end refers to the opposite end. (same as below).

  Since the multi-stage drainage pipe 10 has such a configuration of the joint portion between the pipes, the rear end of the multistage drainage pipe 10 is pushed out by using a penetration jig. The inner tube 13 is sequentially pushed out into the ground so that it can be extended and retracted. In addition, as described above, the joint portions of the pipes each have a reduced diameter at the tip and a diameter at the rear end, so that the multistage drainage pipe 10 has a length until the fitting between the pipes is completed. It is a mechanism that can extend and penetrate. The multistage drainage pipe 10 according to the present embodiment has a total length of about 6 m when extended.

  According to the multistage drainage pipe 10 according to the present embodiment described above, the rear end of the multistage drainage pipe 10 is pushed out by the penetrating jig because the rear end of the multistage drainage pipe 10 is pushed out. The structure is such that the penetration from the large outer pipe 11 into the soil slope is completed. For this reason, the frictional resistance between the pipe and the soil at the time of penetration can be divided, and conventionally, even a long drain pipe that requires pre-boring can be installed without loosening the ground of the slope.

  Moreover, according to the multistage drainage pipe 10, since the frictional resistance at the time of penetration can be divided, a large-sized heavy machine is not required, and it is possible to install a drainage pipe even in a narrow site or where a heavy machine cannot be carried. In addition, since a drain pipe longer than the conventional drain pipe can be installed, a wide range of underground water can be collected and drained.

  In addition, according to the multistage drainage pipe 10, the construction cost of the drainage pipe can be reduced by eliminating the need for preboring. Further, by using a highly corrosion-resistant plated steel pipe, not only the material cost can be reduced, but also the maintenance cost can be reduced and the life cycle cost can be reduced.

<Temporary fixing pin>
[First Embodiment]
Next, the temporary fixing pin 1 of the perforated pipe according to the first embodiment of the present invention will be described with reference to FIGS. Inserted into the water collecting hole H1 of the multi-stage drain pipe 10 described above, the outer pipe 11, the middle pipe 12 and the inner pipe 13 of the multi-stage drain pipe 10 slide and move inadvertently from the outer pipe 11. A case where the tube 12 and the inner tube 13 are prevented from protruding will be described as an example. FIG. 5 is a perspective view showing the temporary fixing pin 1 of the perforated tube according to the first embodiment of the present invention, and FIG. 6 is a front view showing the temporary fixing pin 1 of the perforated tube of FIG.

  The temporary fixing pin 1 according to the first embodiment is a U-shaped stopper having a U-shaped side view in which all parts are bent from a wire rod such as stainless steel and the lower end is opened. The temporary fixing pin 1 includes a grip portion 2 that is gripped and gripped at the time of insertion / extraction, and a pair of left and right leg portions 3 that are connected to the grip portion 2 and folded at both ends of the grip portion 2. .

  The temporary fixing pin 1 has a leg 3 inserted into the water collecting hole H1 of the multistage drainage pipe 10 which is a hole of a perforated pipe, and the outer pipe 11, the middle pipe 12 of the multistage drainage pipe 10, This is used to temporarily fix the sliding movement of each tube of the inner tube 13.

(Gripping part)
As shown in FIGS. 5 and 6, the holding portion 2 of the temporary fixing pin 1 according to the present embodiment is a portion that is held and gripped when the insertion / extraction is provided with the linear holding portion main body 20. This gripping part 2 puts a finger on the linear gripping part main body 20 and pulls out the temporary fixing pin 1 or presses and pushes the gripping part main body 20 to insert and remove the leg part 3 into the water collecting hole H1. Used for.

  Next, modified examples 1 to 3 which are other embodiments of the holding portion of the temporary fixing pin of the present invention will be described with reference to FIG. FIG. 7 is a front view showing a modified example of the holding portion of the temporary fixing pin of the present invention, in which (a) is a temporary fixing pin according to the first modification, (b) is a temporary fixing pin according to the second modification, c) shows a temporary fixing pin according to the third modification.

  As shown in FIG. 7, as a modified example of the above-described gripping part 2, a semicircular arc-shaped gripping part body 21 which is the gripping part according to the modified example 1 shown in FIG. Further, the circular gripping part main body 22 which is a gripping part according to the modification 2 shown in FIG. 5B, and the circular gripping part which is the gripping part according to the modification 3 shown in FIG. A gripping part main body 23 welded to the main body 20 is conceivable. By setting it as such a holding part, regardless of length L3 of the temporary fixing part 32 mentioned later, the finger | toe allowance (space) can be taken and insertion / extraction of a temporary fixing pin becomes still easier. Of course, the gripping portion according to the present invention is not limited to those shown in the drawings, and it is needless to say that the gripping portion may be configured so that it can be gripped and the temporary fixing pin can be inserted and removed from the hole.

(leg)
The leg portions 3 of the temporary fixing pin 1 according to the present embodiment are provided in a pair of left and right symmetrically about a center line that equally divides the grip portion main body 20 on the left and right sides, and are respectively provided in the water collecting holes H1 of the multistage drainage pipe 10. It is the part to be inserted. The interval between the leg 3 and the leg 3 of the temporary fixing pin 1 according to the present embodiment is set to be approximately the same as the interval between the water collecting holes H1 along the axial direction of the multistage drainage pipe 10 (for example, about 25 mm). ing. Needless to say, the distance between the legs according to the present invention may be set according to the distance between the holes of the tube to be temporarily fixed, and may be set as appropriate.

  Each leg part 3 is a guide part 30, a locking part 31, and a temporary fixing part 32 in order from the tip. Note that the tip refers to an open end that is U-shaped when viewed from the side and is not connected to the grip portion 2, and refers to the lower end in the illustrated state (the same applies hereinafter).

(Guide part)
The guide part 30 is a linear part which consists of a wire, and functions as a guide at the time of inserting in a hole. For this reason, the length L1 (length of the straight line portion) of the guide portion 30 is the interval between the holes of the perforated tube to be temporarily fixed, that is, the outer tube of the multistage drainage pipe 10 when being accommodated in an overlapping manner. It is desirable that the outer-outer distance (maximum distance) between the water collecting holes H <b> 1 of the intermediate pipe 11 and the middle pipe 12 is equal to or greater. Further, the length L1 of the guide portion 30 is not less than the distance between the outside and the outside of the water collecting hole H1 of the outer pipe 11 and the water collecting hole H1 of the inner pipe 13 when the multistage drainage pipe 10 is temporarily fixed. Is more preferable.

  If the length L1 of the guide part 30 is equal to or greater than the above-mentioned distance, the linear fixing pin 31 is inserted into the linear pipe before the locking part 31 described later comes into contact with the water collecting hole H1 of the outer pipe 11 when the temporary fixing pin 1 is inserted. The guide portion 30 is inserted into the water collecting hole H of the inner tube 13. For this reason, even if the locking portion 31 contacts the water collecting hole H1 of the outer tube 11, there is no possibility that the temporary fixing pin 1 is displaced from the water collecting hole H1 of the inner tube 13, and the temporary fixing pin 1 is smoothly multi-staged. This is because the water can be inserted into the water collecting hole H1 of the drain pipe 10.

(Locking part)
The locking portion 31 is made of the same wire material as the guide portion 30, is a “character-shaped” portion that is continuous with the guide portion 30 and bent and bent inward between the leg portions 3. As shown in FIG. 6, the locking portion 31 is inclined with respect to the axis of the linear guide portion 30 described above, and a first inclined portion 31 a that comes into contact with the water collecting hole H <b> 1 during insertion, and a temporary fixing portion 32 described later. And a second inclined portion 31b that comes into contact with the water collecting hole H1 when pulled out.

  Moreover, the top part 31c of the latching | locking part 31 which the 1st inclination part 31a and the 2nd inclination part 31b join is the water collection hole H1 in the state by which the guide part 30 or the temporary fixing part 32 is penetrated by the water collection hole H1. It does not exceed the height. That is, the horizontal distance L2 from the outer side of the guide part 30 and the temporary fixing part 32 to the top part 31c is larger than the outer diameter of the water collecting hole H1.

  For this reason, when the temporary fixing pin 1 is inserted into or pulled out from the water collecting hole H1, the locking portion 31 passes through the water collecting hole H1 while being elastically deformed. It has become. Therefore, the temporary fixing pin 1 can be locked to the inner peripheral surface of the water collecting hole H1 of each pipe by the locking portion 31, and can be inserted and removed.

(Temporary fixing part)
The temporary fixing portion 32 is a linear portion that is continuous with the second inclined portion 31 b and is made of the same wire material as the guide portion 30 and the locking portion 31 described above, and includes the outer tube 11, the intermediate tube 12, and the inner tube 13. By being inserted into the water collecting hole H1 of each pipe, it has a function of temporarily restraining the slide movement.

  For this reason, the length L3 of the temporary fixing part 32 is preferably equal to or greater than the outer-outer distance between the water collecting hole H1 of the outer tube 11 and the water collecting hole H1 of the inner tube 13, and the finger is placed at the interval. It is preferable that it is more than the space | interval which added the space (for example, about 12-14 mm) to insert. This is because it is easy to insert and remove the temporary fixing pin 1 by inserting a finger between the outer tube 11 and the grip portion 2.

  Next, modified examples 1 to 5, which are other embodiments of the leg portion of the temporary fixing pin of the present invention, will be described with reference to FIGS. FIG. 8 is a front view showing a modification of the leg portion of the temporary fixing pin of the present invention, in which (a) is a temporary fixing pin according to Modification 1, (b) is a temporary fixing pin according to Modification 2, c) shows a temporary fixing pin according to the third modification. FIG. 9 is a front view showing a modification of the leg portion of the temporary fixing pin of the present invention, where (a) shows the temporary fixing pin according to the modified example 4 and (b) shows the temporary fixing pin according to the modified example 5. ing.

  The difference between the leg 3 according to the first modification shown in FIG. 8A and the leg 3 according to the first embodiment is that the protruding direction of the locking portion is reversed and bent outward and curved. It is only the point which becomes the latching | locking part 33 of "character shape".

  The difference between the leg 3 according to the second modification shown in FIG. 8B and the leg 3 according to the first embodiment is that the leg on the right side of the figure is straight and the leg 34 is straight. It is only a point. Further, in the leg 3 according to the modification 3 shown in FIG. 8C, the left leg in the figure has the same shape as the leg 3 according to the modification 1, and the right leg is a straight leg 34. It has become.

  The leg part 3 according to the modified example 4 shown in FIG. 9A is a locking part 31 in which the left leg part 3 is curved inward, and the locking part 33 in which the right leg part 3 is curved outward. It has become. The length L4 of the left guide portion 30 ′ is longer than the length L1 of the guide portion 30 according to the first embodiment, and the length L5 of the left temporary fixing portion 32 ′ is the first embodiment. It is shorter than the length L3 of the temporarily fixed part 32 which concerns on a form. Further, the length L6 of the right guide portion 30 ″ is shorter than the length L1 of the guide portion 30 according to the first embodiment, and the length L7 of the right temporary fixing portion 32 ″ is the first embodiment. It is longer than the length L3 of the temporarily fixed part 32 which concerns on a form.

  The leg portion 3 according to the modified example 5 shown in FIG. 9B is different from the leg portion 3 according to the modified example 4 only in the bending direction of the locking portion. That is, the leg part 3 according to the modified example 5 is a locking part 33 in which the left leg part 3 is curved outward, and the right leg part 3 is a locking part 31 curved inward. The length L4 of the left guide portion 30 ′ is longer than the length L1 of the guide portion 30 according to the first embodiment, and the length L5 of the left temporary fixing portion 32 ′ is the first embodiment. It is shorter than the length L3 of the temporarily fixed part 32 which concerns on a form. Further, the length L6 of the right guide portion 30 ″ is shorter than the length L1 of the guide portion 30 according to the first embodiment, and the length L7 of the right temporary fixing portion 32 ″ is the first embodiment. It is longer than the length L3 of the temporarily fixed part 32 which concerns on a form.

  The length L5 of the temporary fixing portion 32 'is preferably equal to or greater than the outer-outer distance between the water collecting hole H1 of the outer tube 11 and the water collecting hole H1 of the inner tube 13. Of course, the leg part according to the present invention is not limited to those shown in the drawings, and any locking part may be formed on either the left or right side, and the leg part may be long enough to pass through the holes of the plurality of perforated tubes.

  As described above, the temporary fixing pin 1 according to the first embodiment and the modified example which is another embodiment have been described. However, the first embodiment of the grip 2 and the modified examples 1 to 3 and the first embodiment of the leg 3 are described. Needless to say, the embodiment and the modifications 1 to 5 may be combined to form still another embodiment.

<Temporary fixing pin insertion / extraction method>
Next, the insertion / extraction method (detachment method) of the temporarily fixing pin 1 which concerns on this embodiment is demonstrated using FIG. 10, FIG. FIG. 10 is an enlarged side view of a multistage drainage pipe showing a method of inserting the temporarily fixing pin 1 according to the present embodiment, and FIG. 11 is a multistage drainage pipe showing a state where the temporarily fixing pin 1 is inserted (mounted). FIG. The temporary fixing pin 1 according to the first embodiment is attached to the water collecting hole H1 of the multistage drain pipe 10 described above, and the relative sliding movement of each of the outer tube 11, the intermediate tube 12, and the inner tube 13 is temporarily performed. The case of temporarily fixing to will be described as an example.

  First, all of the outer tube 11, the middle tube 12 and the inner tube 13 of the multistage drainage pipe 10 which are a plurality of perforated tubes having different tube diameters are accommodated in the tube of the outer tube 11 having the maximum diameter, and are gathered together. The positions of the water collecting holes H1 of the outer tube 11, the intermediate tube 12, and the inner tube 13 are aligned using a ruled line, a jig, or the like. Next, as shown in FIGS. 10 and 11, the pair of left and right legs 3, 3 of the temporary fixing pin 1 is inserted into two water collecting holes H 1 adjacent to each other along the axial direction of the outer tube 11. To do.

  When the leg portion 3 is inserted into the water collecting hole H1, the above-described linear guide portion 30 (see FIG. 6 and the like) is straightly inserted into the water collecting hole H1 of each pipe in a vertically aligned state. Then, when the first inclined portion 31a of the locking portion 31 comes into contact with the outer peripheral surface of the outer tube 11 around the water collecting hole H1, the tip of the guide portion 30 is inserted into the water collecting hole H1 of the inner tube 13. Yes. For this reason, when the locking portion 31 is pushed into the water collecting hole H1 to be elastically deformed, the guide portion 30 is locked to the water collecting hole H1 of the inner tube 13, and the legs are laterally (horizontal). It is possible to prevent the portion 3 from shifting. That is, the leg portion 3 can be inserted into the water collecting hole H1 while being guided by the guide portion 30, and the temporary fixing pin 1 can be inserted very easily in a short time.

  Even when the temporary fixing pin 1 is pulled out, when the second inclined portion 31b of the locking portion 31 is brought into contact with the inner peripheral surface of the water collecting hole H1 of the inner tube 13 and pulled out, the temporary fixing portion 32 is removed from the outer tube 11. And the water collecting hole H1 of the middle pipe 12 is inserted. For this reason, the movement of the leg 3 in the lateral direction is restricted, and the temporary fixing pin 1 can be pulled out very easily and in a short time.

[Construction method of multistage drainage pipe]
Next, the construction method of the multistage drainage pipe which concerns on embodiment of this invention is demonstrated using FIGS. A description will be given of a case where the multistage drainage pipe 10 described above is inserted into the ground (soil slope) using a penetration jig. The heavy machine used for penetration of the multistage drainage pipe 10 is preferably a 0.2 m ³ class heavy machine with a breaker B attached to the tip of a hydraulic excavator, which is a hydraulic heavy machine, but is penetrated using a hand-held vibration press-fitting device. May be.

  FIG. 12 is a flowchart showing each step of the construction method of the multistage drainage pipe according to the present embodiment, and FIG. 13 is a diagram of the multistage drainage pipe construction method according to the present embodiment when transporting the multistage drainage pipe. It is a side view which shows a state by middle omission.

(1) Temporary fixing pin mounting process First, in the construction method of the multistage drainage pipe according to the present embodiment, as shown in FIGS. 12 and 13, the temporary fixing pin 1 is installed in a factory or the like where the multistage drainage pipe 10 is manufactured. A temporary fixing pin mounting step is performed in which the temporary fixing pin 1 is mounted on the multistage drainage pipe 10 by being inserted into the water collecting hole H1. Specifically, the temporary fixing pin 1 is inserted into the water collecting hole H1 in accordance with the above-described temporary fixing pin insertion method (see FIGS. 10, 11, and 13).

  As a result, the sliding movement of each of the outer tube 11, the middle tube 12 and the inner tube 13 of the multistage drainage pipe 10 is temporarily temporarily fixed, and the middle tube 12 and the inner tube 13 are not prepared from the outer tube 11 during transportation. Can be prevented, and packing operations and the like that have been conventionally required can be omitted.

(2) Drainage pipe carrying-in process Next, in the construction method of the multistage drainage pipe concerning this embodiment, as shown in FIG. 12, it conveys to the construction site where the multistage drainage pipe 10 put together in the previous process is installed. A drain pipe carrying-in process is performed (not shown).

  Specifically, after being transported by the transport vehicle, the multistage drainage pipe 10 is unloaded from the transport vehicle using a lifting device or the like, and transported to the installation position using hand transport or a carriage. For this reason, the work which removes a packing is also unnecessary.

(3) Positioning process Next, in the construction method of the multistage drainage pipe according to this embodiment, as shown in FIG. 12, a positioning process for positioning the penetration position of the multistage drainage pipe 10 is performed (not shown). Specifically, in this process, the position where the multistage drainage pipe 10 penetrates into the slope, the penetration angle, etc. are specified by ground survey, surveying, etc., and a mark is given by marking or the like.

(4) Base installation step Next, in the construction method of the multistage drainage pipe according to the present embodiment, as shown in FIG. 12, the base is assembled and installed as a preliminary preparation for the work of penetrating the multistage drainage pipe 10. Perform the gantry installation process. FIG. 14 is a photograph showing a gantry installation process of the construction method of the multistage drainage pipe according to the present embodiment. As shown in FIG. 14, specifically, in this step, a single pipe is assembled in a torii-like shape using a clamp or the like, and a single pipe is set against the slope so as not to fall down. Support the pipes so that they do not slip. It is easy to define the penetration direction of the multistage drainage pipe 10 by the torii-shaped horizontal pipe of the gantry.

(5) Temporary fixing pin extraction step At the installation position, the temporary fixing pin 1 is extracted by hooking a finger on the grip portion 2 in accordance with the above-described method of inserting and extracting the temporary fixing pin. Thereby, the multistage pipe 10 becomes slidable, and penetration becomes possible.

(6) 1st extrusion process Next, in the construction method of the multistage type pipe concerning this embodiment, as shown in FIG. 12, the temporary fixing pin 1 was pulled out using the penetration jig | tool with which the breaker B was mounted | worn. A first extrusion process is performed for penetrating the entire multistage drainage pipe 10 into the slope. FIG. 15 is a process explanatory view showing a first extrusion process of the construction method of the multistage pipe according to the present embodiment. In this step, as shown in FIG. 15, while the chisel T is vibrated by the breaker B, the entire multistage drainage pipe 10 is pushed out by the penetration jig attached to the chisel T and penetrated into the slope.

(7) Second Extrusion Step Next, in the multistage pipe construction method according to the present embodiment, as shown in FIG. 12, the intermediate tube 12 and the inner tube 13 are used by using a penetration jig J equipped with an extrusion plate. The 2nd extrusion process which penetrates further into a slope is performed. FIG. 16 is a process explanatory view showing a second extrusion process of the construction method of the multistage pipe according to the present embodiment.

  In this step, as shown in FIG. 16, while the chisel T is vibrated by the breaker B, the rear end portion of the intermediate tube 12 is pressed by the extrusion plate of the penetration jig J attached to the chisel T. At the same time, the rear end portion of the inner tube 13 is pushed out by the extrusion nut of the penetration jig J. Thereby, the middle pipe 12 and the inner pipe 13 are further penetrated deep into the slope.

(8) Third Extrusion Step Next, in the construction method of the multistage pipe according to the present embodiment, as shown in FIG. 12, using the penetration jig J from which the extrusion plate has been removed, A third extrusion process is performed to further penetrate the pipe 13 into the slope. FIG. 17 is a process explanatory view showing a third extrusion process of the construction method of the multistage pipe according to the present embodiment.

  In this step, as shown in FIG. 17, while the chisel T is vibrated by the breaker B, the rear end portion of the inner pipe 13 is pushed out by the extrusion nut of the penetration jig J attached to the chisel T, and the inner pipe 13 is It penetrates into the slope to a predetermined depth.

  When this step is completed, the installation work of the multistage drainage pipe 10 is completed by removing the installed base and cleaning up.

  According to the temporary fixing pin 1 and the multistage pipe construction method using the temporary fixing pin 1 according to the present embodiment described above, the temporary fixing pin 1 is placed in one place when the multistage drainage pipes and the like are grouped together. Just plug it in and there is no need for packing. In addition, the locking portion 31 of the temporary fixing pin 1 is locked in the water collecting hole H1 of the inner tube 13, and the sliding movement between the tubes of the outer tube 11 to the inner tube 13 is restricted by the temporary fixing portion 32. Yes. For this reason, there is no fear of collapse of the multistage drainage pipe 10 during transportation, and it is possible to prevent the middle tube 12 and the inner tube 13 from inadvertently protruding from the outer tube 11 during transportation. In addition, the temporary fixing pin 1 can be slid between the pipes simply by gripping and pulling the grip portion 2, so that it is not necessary to remove the packaging at the construction site.

  As mentioned above, although the construction method of the multistage pipe using the temporary fixing pin 1 and the temporary fixing pin 1 according to the embodiment of the present invention has been described in detail, any of the above-described or illustrated embodiments implements the present invention. It is only what showed one embodiment actualized in that case. Therefore, the technical scope of the present invention should not be limitedly interpreted by the illustrated embodiments.

  In particular, the temporary fixing pin made of a stainless wire has been described as an example, but it may be made of other steel materials, other metals, resins, or the like. In short, the temporary fixing pin according to the present invention may be made of any material as long as it has the strength that can be elastically deformed and can restrain the sliding movement of the perforated tube.

1: Temporary fixing pin 2: Grasping part 20, 21, 22, 23: Grasping part main body 3: Leg part 30, 30 ': Guide part 31, 33: Locking part 31a: First inclined part 31b: Second inclined part 31c: Top part 32, 32 ': Temporary fixing part 34: Linear part 10: Multistage drainage pipe 11: Outer pipe 12: Middle pipe 13: Inner pipe H1: Water collecting hole B: Breaker T: Chisel J: Penetration jig

Claims (8)

In a state where all of the plurality of perforated pipes having different diameters are inserted into the maximum diameter pipe, the plurality of perforated pipes are inserted into the holes of all of the plurality of perforated pipes. A temporary fixing pin of a removable perforated tube that temporarily fixes the sliding movement of
A gripping part that grips and grips at the time of insertion / extraction, and a leg part that is connected to the gripping part and folded at one end thereof,
The leg portion is provided at a distal end that is not connected to the gripping portion, and is connected to the guide portion and a linear guide portion that serves as a guide when being inserted into a hole of each of the plurality of perforated tubes. A locking portion locked to the hole of any one of the plurality of perforated tubes, and a length inserted through all the tubes of the plurality of perforated tubes connected to the locking portion. A perforated tube temporary fixing pin, characterized by having a linear temporary fixing portion. The locking portion is inclined with respect to the shaft of the wire rod of the guide portion and the temporary fixing portion, and is inclined with respect to the axis of the wire rod of the guide portion and the temporary fixing portion, the first inclined portion contacting the hole during insertion. The perforated tube temporary fixing pin according to claim 1, further comprising: a second inclined portion that comes into contact with the hole when pulled out. The leg portion is provided with a pair of right and left by folding both ends of the grip portion,
3. The temporary fixing pin for a perforated tube according to claim 1, wherein the pin is a U-shaped side view with one end opened as a whole. The said latching | locking part is provided in the said left-right paired leg part, respectively, The distance from the open | released one end of the said leg part is formed in the same position, The existence of Claim 3 characterized by the above-mentioned. Temporary fixing pin for hole tube. The said latching | locking part is respectively provided in the said left-right paired leg part, and is formed in the position where the distance from the open | released one end of the said leg part differs. Temporary fixing pin for hole tube. The said latching | locking part is provided in the said left-right paired leg part, respectively, and the direction which protrudes from the axis | shaft of the said wire rod of the said latching | locking part is left-right symmetric. A temporary fixing pin for a perforated tube according to claim 1. The locking portion is provided on each of the pair of left and right legs, and the direction of the locking portion protruding from the shaft of the wire is asymmetrical to the left and right. Temporary fixing pin of the perforated tube as described. In the construction method of a multistage drainage pipe that penetrates into the ground a multistage drainage pipe in which a plurality of perforated pipes with different diameters with holes for drainage are fitted into each other,
Using the temporary fixing pin of the perforated pipe according to any one of claims 1 to 7, the leg section is inserted into the holes of all the pipes of the multistage drainage pipe before transportation, and the locking section Is locked in the hole of any one of the plurality of perforated pipes,
The construction method of a multistage drainage pipe, wherein the temporary fixing pin is pulled out immediately before the multistage drainage pipe penetrates into the ground.