JP4567891B2 - Vertical piping construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  In the case where a pipe line is laid in a vertical sheath with a large head,,tubeThe present invention relates to a vertical pipe laying method in which axes are connected while being matched or matched.
[0002]
[Prior art]
  Conventionally, a vertical pipe (hereinafter referred to as a vertical pipe), which connects pipes installed near the surface of the earth and pipes laid deep underground, connecting pipes with a large drop, for example, large pipes. When laying vertical sewage pipes of caliber, etc., digging the vertical pipe laying site and excavating the vertical pit, placing a sheath pipe larger than the outer diameter of the longitudinal pipe, and inserting this sheath pipe into the pipe receptacle and the pipe Suspend the fixed-length pipes provided at both ends with a rope etc. from the ground and lower the pipe, and insert the pipe outlet or pipe receptacle of the pipe lowered to the pipe receptacle or pipe outlet of the lower pipe The connection method is used.
[0003]
  However, in this method, for example, when the head is large and the extension of the vertical pipe is long, the fixed-length pipe must be lowered down the pipe over a long distance. Axis misalignment between the receiving port or the tube insertion port and the tube insertion port or the tube receiving port of the tube to be lowered next is likely to occur, and advanced tube lowering technology is required to connect the tubes accurately, or the tube An operator is placed in the connection section, and the pipe outlet or pipe receptacle of the pipe that the operator descends is guided to the pipe receptacle or pipe outlet of the lower pipe while communicating with the ground. It was a dangerous task.
[0004]
  Furthermore, when the tubes are stacked, the connection place between the standard-sized tubes becomes higher from the lower pipeline, and the danger further increases, and it becomes practically difficult to place the worker at the connection portion of the tubes, There was a problem that the connection of the standard length pipe might be incomplete. Further, when the pipe diameter of the vertical pipe is large, the fixed-size pipe itself is heavy, and the above-described problems have been made more serious.
[0005]
  As a method of lowering an object in a vertical cavity so as not to deviate from the center axis of the lowering, for example, an elevator or the like, a rail is attached to the side wall of the cavity and the elevator box is attached to this. A method of moving up and down in a cavity by meshing attached wheels is known. In this case, a person may get on the box that is descending, and it is necessary to prevent slight vibration and rattling of the box that is moving. Therefore, for example, a wheel is attached via a cushioning material, Precise alignment is performed so that there is no rattling. However, in order to apply this method to the technical field of the present invention as it is, there is another problem that the cost becomes too high because the accuracy is too high or the box is smoothly moved up and down. is there. That is, in the present invention, it is sufficient that the displacement between the tube axes is within the connection allowable range of the connection port, and some vibration may occur during the vertical movement. It is possible to lower.
[0006]
[Problems to be solved by the invention]
  The vertical pipe laying method of the present invention solves the problems of the above-described conventional laying method, for example, when laying a large-diameter vertical pipe, the operator cannot visually confirm the connection location or the pipe axes do not match. Even if it is difficult to correct, it is made for the purpose of providing a method in which the tube axes between the standard lengths can be matched or connected while being matched, for example, in the vertical sheath with a large drop. Even in the case of laying vertical sewage pipes, etc., it was made for the purpose of providing a vertical pipe connection method that can accurately connect standard pipes without placing an operator at the pipe connection part. is there.
[0007]
[Means for Solving the Problems]
  In order to solve the above problems, the vertical pipe laying method (invention 1) according to claim 1 of the present invention is, DroopA method of laying a pipe line in a sheath pipe arranged in a straight direction, with projections attached to the outer peripheral surface in the vicinity of the upper and lower ends of the pipe that is provided in the sheath pipe and forms a vertical pipe line. 3 or more fixed at equal distance intervals, the above pipes are sequentially lowered inside the sheath, and the previously lowered tube and the descending tube are connected, and after the connection, the gap between the sheath and the tube is filled with the filler. This is a vertical pipe laying method characterized in that a vertical pipe line is formed.
[0008]
  Claims of the invention2The vertical pipe laying method described (invention2) Is an invention characterized in that the protrusion is a wheel.1This is a vertical pipe laying method.
[0009]
  Claims of the invention3The vertical pipe laying method described (invention3) Is a method of laying a pipe line in a sheath pipe arranged in a vertical direction, and a pipe that is provided in the sheath pipe to form a vertical pipe line is attached to one end of a short tubular body in a pipe receptacle. A fixed portion of a receiving jig having a tapered portion whose other end is the same as the inner diameter of the tube receiving port and whose diameter is gradually increased in the opposite direction to the fixed portion is attached to the tube receiving port of the tube. Place the next pipe to be connected to the pipe in the sheath with the pipe inlet facing up, and then descend the sheath pipe with the pipe inlet or the pipe inlet facing down, so that the outer peripheral edge of the pipe inlet end surface Abuts the tapered surface of the receiving jig, slides the tube insertion port along the tapered surface, and guides it to the tube receiving port. The tube receiving port or tube inserting port of the tube and the tube inserting port or tube receiving port of the next tube Is a vertical pipe laying method characterized by connecting the
[0010]
  Claims of the invention4The vertical pipe laying method described (invention4) Is invention 1Or 2In this pipe connection method, the lower end of the pipe is a pipe receptacle or a pipe outlet and the upper end is a pipe outlet or a pipe receptacle.3This is a vertical pipe laying method characterized in that a receiving jig is provided.
[0011]
  The vertical pipe laying construction method (invention 5) according to claim 5 of the present invention is a construction method for laying a pipe line in a sheath pipe arranged in the vertical direction along the pipe axis of the sheath pipe. Then, at least one linear rail is fixed so that the distance from the tube axis side surface of the rail to the sheath tube axis is a constant distance, and a vertical conduit is formed in the sheath tube. A sliding tool that is slidably meshed with the rail is fixed to the outer peripheral surface of the pipe, and the sliding tool and the rail are meshed with each other to lower the inside of the sheath, and then with the previously lowered pipe and the descent. A pipe is connected to the inner pipe to form a vertical pipe, and a lower end of the pipe is a pipe receiving opening or a pipe insertion opening, an upper end is a pipe insertion opening or a pipe receiving opening, and the receiving jig according to claim 3 is provided in the pipe receiving opening. It is a vertical pipe laying method characterized by being provided.
[0012]
  The vertical pipe laying method of the present invention can be applied to any vertical pipe, but is particularly effective when applied to a high-fall vertical sewer pipe to which a large number of fixed pipes must be connected. Since this will be demonstrated, the following detailed description will be made with a vertical sewage pipe having a high head as a representative.
[0013]
  The sheath pipe is not particularly limited as long as it is a commonly used sheath pipe. For example, synthetic resins such as vinyl chloride resin, polyethylene, fiber reinforced synthetic resin, resin concrete, or a composite material thereof; iron, steel Metals such as stainless steel and aluminum; inorganic materials such as (rebar) concrete and ceramics such as ceramics. Further, the sheath tube does not need to be continuous and integrated, for example, it may be considered to be substantially integrated by combining a rectangular or circular culvert, casing, liner plate, or the like. I do not care.
[0014]
  The present invention5In the sheath pipe, at least one rail is fixed to the inner peripheral surface along the axial direction. The rail has a function as a guide path when a sliding tool (described later) attached to the outer periphery of the pipe is slidably engaged with the rail and the pipe is moved up and down. Accordingly, the material is not particularly limited as long as it has appropriate strength and rigidity as a rail, and examples thereof include metal, such as iron, stainless steel, and aluminum. The shape is not particularly limited, such as a plate shape, a rod shape, or a U shape, but an elongated iron plate shape is most preferably used in view of strength, economy, and the like.
[0015]
  The distance from the tube axis side surface of the rail to the sheath tube axis is fixed so that all the rails have the same constant distance. That is, the rail sheath and the protruding height from the inner wall of the pipe are the same for all the rails. Also, the rail mounting direction is parallel to the sheath axis direction.
[0016]
  The method of attaching the rail to the sheath inner peripheral surface is not particularly limited, and generally a method of fixing a heavy object in the tube may be used. For example, as an example, a rail in which a single straight line is drawn in a direction perpendicular to the sheath inner peripheral surface in advance, for example, an iron angle is cut to an appropriate length, and a through hole is provided in each piece thereof For example, a fixing tool may be fixed to the sheath tube with a bolt or the like at an appropriate interval, and a long iron plate rail may be fixed to the fixing tool.
[0017]
  The number of rails attached in this way may be one when the tube diameter is small and the tube weight is light, but usually two or more rails are attached to the inner peripheral surface diagonally from the center of the tube axis of the sheath. That is, when the pipe diameter is large and the weight is heavy, the rail may be bent due to the swing during the descent. Therefore, three to four or more rails may be provided.
[0018]
  The pipe is not particularly limited as long as it is a pipe used for a normal vertical pipe. For example, vinyl chloride resin, polyethylene, polypropylene, polybutene, fiber-reinforced synthetic resin, resin concrete-integrating resin, or a composite material thereof; Metals such as iron and stainless steel aluminum; (rebar) pipes made of inorganic materials such as concrete, ceramics such as pottery.
[0019]
  Both tube end portions of the tube are a tube insertion port and a tube receiving port, respectively. In this case, a generally used connection structure can be applied to the connection structure between the tube insertion port and the tube receiving port. That is, for example, as an example, a so-called rubber ring connection structure in which an O-ring is fitted to the outer peripheral surface of the pipe opening, an O-ring is attached to the inner peripheral face of the pipe receiving opening, and the insertion opening is inserted into the pipe receiving opening. Can be mentioned. Further, when connecting the tubes, the tubes are generally arranged and connected so that the end portion on the tube receiving port side is on the upper side and the tube insertion port is on the lower side.
[0020]
  A sliding tool having a function of moving the pipe up and down by meshing with the rail is fixed to the outer peripheral surface of the pipe. Therefore, the material of the sliding tool is not particularly limited as long as it has strength and rigidity capable of supporting the pipe by meshing with the rail. For example, it is made of a metal such as soft iron, steel, cast iron, stainless steel, and aluminum. Of these, iron materials can be most suitably used from the viewpoint of strength, economy and the like.
[0021]
  The shape is not particularly limited as long as it is slidably meshed with the rail, but as an example, if the rail is of an elongated iron plate shape, it is an iron plate processed product bent into a U-shaped cross section. In addition, a U-shaped groove portion can be slidably engaged with the rail. On the other hand, if the rail is an iron plate processed product that is bent into a U-shaped cross section, it is an elongated iron plate that is slidably engaged with the U-shaped groove of the rail. Etc.
[0022]
  The sliding tool is attached and fixed near the upper and lower ends of the tube. The upper and lower sliding tools are used in pairs so as to slide on the same rail. Therefore, the pipe is moved up and down along the rail at both the upper and lower ends, the pipe axis is substantially parallel to the rail, and the rail is parallel to the pipe axis of the sheath. It moves up and down in line with the tube axis of the sheath.
[0023]
  The projecting height of the sliding tool from the pipe is such that the distance between the bottom surface of the U-shaped groove of the sliding tool meshed with the rail and the end surface of the rail is a slight gap. The width is slightly wider than the width of the rail. That is, the sliding tool is engaged with the rail with a slight gap, and since this gap exists, the sliding tool can slide on the rail. However, this gap must not exceed the allowable range of the connecting portions provided at both ends of the pipe.
[0024]
  The method of fixing the sliding tool to the outer peripheral surface of the pipe is not particularly limited. For example, as an example, a belt-shaped metal plate is wound around the outer peripheral surface of the pipe in a direction perpendicular to the tube axis, and the U-shaped sliding tool is attached thereto. May be fixed by welding, bolts, or the like so that the groove portion faces outward and is engaged with the groove rail so as to be movable up and down.
[0025]
  A normal method is applied to the method of lowering the pipe into the sheath pipe to form a pipe line. That is, the pipe is hung with a rope or the like so that the pipe axis is in the vertical direction, is placed above the sheath pipe, and is gradually lowered to the pipe inlet side corresponding to the pipe receptacle provided below the pipe. The sliding tool fixed at one end is engaged with the rail fixed to the sheath tube, and the steel pipe is further slid down to engage the sliding tool fixed at the other end of the tube with the rail, and further lowered. .
[0026]
  Therefore, the pipe is lowered in the sheath, and the pipe connection ports of the pipe lowered and the pipe lowered are surely aligned with each other, so that when the pipes are stacked and connected, The connection is complete and the installation of the vertical sewer pipe is completed. If necessary, for example, mortar, air mortar, water curing agent, sand and other inorganic fillers; silicon rubber, urethane foam, foam rubber, polystyrene foam, etc. In some cases, synthetic resins and the like are filled according to a conventional method.
[0027]
  In the invention 2, it is preferable that the sheath tube has no protrusions or irregularities on the inner surface, and the cross section is desirably as smooth as possible.
[0028]
  Projections are attached to the outer peripheral surfaces in the vicinity of the end portions above and below the tube. The protrusion plays a role of maintaining a constant distance between the outer peripheral surface of the tube and the inner peripheral surface of the sheath. Therefore, the material is not particularly limited as long as it has strength that can resist the shaking of the pipe that occurs when the pipe is lowered into the sheath. For example, a metal such as iron, stainless steel, copper, aluminum, brass, bronze, etc. And thermoplastic resins such as polyethylene, polypropylene, vinyl chloride resin and acrylic-styrene-butadiene copolymer resin; reinforced thermosetting resins such as fiber reinforced polyester and resin concrete; fiber reinforced thermoplastic resin and the like Reinforced resins; natural products such as processed products of wood, wood pieces and fibers, and inorganic materials such as cement. Furthermore, in order to smoothly descend the sheath through the pipe, the surface of the protrusion may be subjected to a slippery surface treatment with fluororesin or silicon resin, or the protrusion itself may be a wheel or the like.
[0029]
  The protrusions are provided on the outer peripheral surface of the pipe at equal intervals perpendicular to the axial direction, for example, using three or more per one end of the pipe. That is, when the number is two or less, the gap between the sheath and the pipe is constant in the direction along the mounting direction, but the gap changes in the perpendicular direction.
[0030]
  The protruding height of the protrusion from the pipe surface is substantially the same as the distance between the pipe and the sheath, and is slightly reduced. Accordingly, a slight gap is formed between the outermost side of the projection and the sheath tube, but this gap is preferably made smaller than the allowable swing width of the connection port of the tube. That is, in this way, the tube axis of the tube is substantially coincident with the tube axis of the sheath tube. Therefore, when the tube connection port of the descending tube comes into contact with the tube connection port of the already arranged tube, Since the axes are substantially coincident and within the allowable connection range, the connection is reliably performed.
[0031]
  A general method may be adopted as a method for attaching the protrusion to the outer peripheral surface of the pipe, and there is no particular method. That is, for example, as an example, a metal band is wound and fixed in a direction perpendicular to the tube axis at the protrusion mounting location on the outer peripheral surface of the pipe, and an angle or the like is fixed to this to form a protrusion mounting tool. Can be attached. Moreover, you may attach an attachment to a pipe | tube so that a deformation | transformation of a protrusion can be absorbed via a spring, rubber | gum, etc. In this case, even if the distance between the outermost protrusion and the sheath tube is further narrowed, the tube can be lowered into the sheath tube.
[0032]
  When the protrusion is a wheel, the rotation direction of the wheel must be correctly aligned with the tube axis direction. Otherwise, when the wheel touches the sheath tube, the tube may travel obliquely with respect to the tube axis.
[0033]
  These protrusions. When the tube is shaken while descending, it is not touched by the sheath inner wall, for example, the invention5As described above, a rail or the like may be attached to the inner wall of the sheath so as to come into contact therewith. The method of lowering the tube into the sheath and making it into a conduit is the same as the method described above, and will not be described again.
[0034]
  invention3In the above, the pipe receiving port is provided with a receiving jig having a tapered surface provided so as to protrude outside. In this receiving jig, when the pipe is connected, the insertion side pipe is moved in the direction of the receiving side pipe, and the outer peripheral portion of the end face of the pipe insertion opening abuts against the tapered surface of the receiving jig provided outside the pipe reception opening. And the tube axis of the insertion side tube and the tube axis of the reception side tube coincide with each other.
[0035]
  Therefore, the material is not particularly limited as long as it is strong enough not to be deformed when the descending tube hits and the load is applied, and the tube end surface of the tube inlet can slide along the tapered surface. For example, as an example, thermoplastic resins such as vinyl chloride resin, polyethylene, polypropylene, acrylic-styrene-butadiene copolymer resin; composite resins such as resin concrete, fiber reinforced thermoplastic resin, fiber reinforced thermosetting resin; Examples include metals and alloys such as iron, stainless steel, aluminum, and brass; organic or inorganic materials such as wood and cement; and composite materials in which these materials are used in combination.
[0036]
  The receiving jig has a tapered surface in which the other end of the short tubular body, one end of which is connected to the tube receiving port, has an inner diameter substantially matching the inner diameter of the tube receiving port and gradually expands outward. Is. The connecting portion may be connected to the tube receiving port so that the receiving jig does not move. For example, a structure that is fitted and attached to the tube receiving port may be used. In this case, the fitting allowance may be appropriately selected and determined in consideration of the outer diameter of the tube receiving port used and the weight of the tube. Of course, the outermost diameter of the tapered portion must be smaller than the sheath inner diameter.
[0037]
  The method of fixing the receiving jig to the tip of the tube receiving port is not particularly limited as long as the inner peripheral surface of the end of the tube receiving port and the taper surface minimum inner diameter portion of the receiving jig are fixed so as not to open a gap. For example, if, as an example, the connection port of the receiving jig whose inner diameter is slightly larger than the outer diameter of the tube receiving port is attached to the tube receiving port, the minimum inner diameter portion of the tapered surface is brought into contact with the end of the tube receiving port. good.
[0038]
  The receiving jig having the tapered surface described here is a part attached to the outside of the tube receiving port and connected to the tube receiving port, but the diameter of the tube wall at the tip of the receiving port gradually increases. However, it may be a guide receiving port that is extended and protruded.
[0039]
  As the structure of the connecting portion in this case, a commonly used one such as the rubber ring joint described above can be applied.
[0040]
  The pipe is lowered into the sheath and made into a pipe line by attaching a receiving jig to the pipe receiving port and suspending the lowered pipe with a rope or the like so that the pipe axis is in a substantially vertical direction. When the receiving jig provided at the pipe receiving port of the pipe already arranged below or lowered from above comes into contact with the pipe insertion port, the pipe insertion port tapers to the taper of the receiving jig. The surface of the tube slides and is guided to the tube receptacle so that the tube axes coincide. Thereafter, the pipe is further lowered, and the pipe inlet is completely inserted into the pipe receptacle to form a pipe, and the laying of the pipe in the vertical direction is completed. If necessary, the gap between the sheath and the tube may be filled with mortar or the like as described above.
[0041]
  invention4The invention3Invention 1 using a tube having a tube receiving opening provided with a receiving jigOr 2It is related with the construction method which lays a vertical pipe in a sheath pipe by this method.
[0042]
  Invention 1Or 2In this case, the tube axis of the tube and the tube axis of the sheath tube coincide with each other. Therefore, the tube axis of the vertical tube is correctly coaxial, but the tube is placed between the rail and the sliding tool or between the sheath tube and the projection. Since there is a small gap necessary for the descent of the pipe, the gap will become slightly larger depending on the condition of the inner surface of the sheath and the mounting accuracy of the rail, slider, or projection, etc. May approach the tolerance of the connection.
[0043]
  Even in this case, the invention3If the described receiving jig is provided at the tube receiving port of the lower or upper tube, it is the same as the inner diameter of the tube receiving port being increased, so that the tube insertion port of the upper or lower tube is somewhat connected to the tube. Even if the axis is misaligned, the end face of the tube insertion port hits the receiving jig and is guided correctly along the tube into the tube receiving port, so that the tubes can be connected without causing an axis misalignment.
[0044]
(Function)
  The present invention5In the vertical pipe laying method, a rail is provided in the sheath pipe in the vertical direction, and is fixed to the outer peripheral surface of the pipe that is provided in the sheath pipe to form the vertical pipe. Since the sliding tool that can move in the direction is slidably engaged with the rail and the pipe is sequentially lowered from the ground along the rail, each of the pipe that has been lowered and the pipe that has been lowered. When the pipe ports of the connection ports are surely aligned and stacked and connected, the connection can be made completely, and there is no need to place an operator at the connection place.
[0045]
  invention1In the pipe laying method in the vertical direction, protrusions are provided around the pipes, and the gaps between the pipes and sheaths are kept constant by these protrusions. Therefore, the pipe connection ports of the pipe that has been lowered and the pipe that has been lowered are stacked so that their pipe axes coincide with each other, and when they are connected, the connection can be made completely and at the connection place. There is no need to place workers. If the protrusion is a wheel, the tube can be lowered more smoothly.
[0046]
  invention3In, since the tapered receiving jig is provided so as to protrude from the tube receiving port, when the tube insertion port of the insertion side tube is pressed against the tapered surface portion, the insertion port is transferred along the tapered surface, Since the tube axes of the receiving side pipe and the sending side pipe match each other, the pipe connection ports of the pipes are surely matched and the connection can be made completely. There is no need to place them.
[0047]
  invention4In the case of connecting the pipes arranged so that the tube axes of the connection ports coincide with each other by the method of the invention 1 or 2, for example, the sheath is shaken or there is some gap in sliding, Even if the shaft runout becomes somewhat large, the pipe moves along the tapered surface, so that the connection can be made while reliably correcting the axial deviation between the pipe shafts.
[0048]
DETAILED DESCRIPTION OF THE INVENTION
  Next, the vertical pipe laying method of the present invention will be described with reference to the drawings. In the following figures, the case where the lower tube side is the tube insertion port and the upper tube is the tube insertion port and this tube reception port and the tube insertion port are connected is illustrated, but the lower tube side is the tube insertion port. Needless to say, the upper tube may be a tube receiving port.
[0049]
  FIG. 1 is a partial cross-sectional view showing one rail portion of an example of a sewage vertical pipe laid by the pipe laying method of the present invention. A plurality of rails 11 (only one is shown in the figure) are fixed to the inner wall of the steel sheath 1. Each rail 11 is parallel to the tube axis of the sheath tube 1 and is fixed by a method that does not prevent the sliding of the sliding tool 21 so that its height is constant from the inner wall of the sheath tube 1.
[0050]
  FIG. 2 is a partial cross-sectional view of an example of a combination of the rail 11 fixed in the sheath tube 1 and the sliding tool 21 fixed to the tube.
[0051]
  In FIG. 2 (a), the sheath tube 1 is provided with an elongated flat steel rail 11 (only one is shown in the figure) from the center of the tube axis of the sheath tube 1 to the inner peripheral surface at a diagonal position. In parallel with this, it is fixed with a bolt (not shown) through a rail fixture 12 (only one is shown in the figure). The rail fixture 12 is attached to the sheath 11 of the rail 11 so as not to prevent the sliding of the sliding tool 21.
[0052]
  The sliding tool 21 is formed by bending an iron plate into a U-shape and is perpendicular to the tube axis so that the groove portion of the sliding tool 21 faces outward on the outer peripheral surface in the vicinity of both pipe ends of the pipe 2. It is fixed by welding to a band 22 that is tightly wound. The width of the U-shaped groove portion of the sliding tool 21 is slightly wider than the width of the rail 11, and a slight gap is provided between the bottom surface of the groove portion and the end surface of the minimum inner diameter portion of the rail. The clearance between the sliding tool 21 and the rail 11 only needs to be determined as appropriate so that the runout width is within the allowable connection range of the connection port, and is within a range determined by the pipe diameter. .
[0053]
  Therefore, when the sliding tool 21 is engaged with the rail 11, the tube 2 is in a state in which the tube axes are substantially coincided with each other at the center of the sheath tube 1 and can slide along the rail 11. Has been.
[0054]
  FIG. 2B is the opposite, and is an example in which the rail 11 is attached to the pipe 2 and the sliding tool 21 is attached to the sheath pipe 1. Even if the rail 11 is attached to the pipe 2 and the sliding tool 21 is attached to the sheath pipe 1, the effect is the same as described above.
[0055]
  FIG. 2C is a partial cross-sectional view of an example of still another combination of the rail 11 and the sliding tool 21. In this case, the rail 11 is attached to the inner peripheral surface of the sheath tube 1, and the sliding tool 21 is attached to the outer peripheral surface of the tube 2. The attachment method may be according to the method described above.
[0056]
  The sliding tool 21 is provided with through holes in the wall portions on both sides of a bolt stay 215 formed by bending an iron plate into a U-shape, and bolts 216 and 216 ′ are passed through the through holes, respectively, and nuts 217 and 217 ′. The rail 11 is sandwiched in the gap between the tips of the bolts 216 and 216 ′ that are fixed to each other. A long hole is formed in a wall portion on both sides between the bottom surface of the bolt stay 215 and the bolt in a direction perpendicular to the tube axis, and a gap adjusting rod 218 is inserted into the long hole. The bolt stay 215 is welded to the belt-like body 22 wound around the pipe shaft in a direction perpendicular to the pipe axis so that the wall portions on both sides of the bolt stay 215 are on the outer pipe in the vicinity of both pipe ends of the pipe 2. It is fixed. The gap adjusting rod 218 may also be used as a fastening bolt for the band-like body 22.
[0057]
  The distance between the bolts 216 and 216 ′ attached to the bolt stay 215 is slightly wider than the width of the rail 11, and a slight gap is provided between the gap adjusting rod 218 and the end surface of the smallest inner diameter portion of the rail 11. Yes. The gap between the gap adjusting rod 218 and the rail 11 only needs to have a swing width within the allowable connection range of the connection port. The gap adjusting rod 218 is moved along the long hole, and is determined by the pipe diameter. As long as it is within the range, it may be determined as appropriate.
[0058]
  The gap adjusting rod 218 is not particularly necessary, and the manufacturing accuracy of the sheath 1 or 2 is good, and the distance between the top end of the rail 11 and the bolt stay 215 does not change much over the entire length of the sheath. In some cases, it may be omitted. In this case, a slight gap may be provided between the bottom surface of the bolt stay groove and the top end of the rail.
[0059]
  FIG.2 (d) is the reverse, and is an example of what the rail was attached to the pipe | tube and the sliding tool was attached to the sheath pipe | tube.
[0060]
  The tube connection ports 23 at both ends of the tube 2 are respectively a tube insertion port 231 and a tube receiving port 232, and a rope or the like so that the connection port 23 (231 or 32) corresponding to the tube connection port of the tube provided below is directed downward. The sliding tool 21 (211, 212, 213, 214) is disposed in the sheath tube 1 so as to be fitted to the rail 11 (111, 112). Usually, the pipe connection port of the lower pipe is used as the pipe receiving port 232, and the pipe connection port of the upper pipe is used as the pipe insertion port 231, but the reverse is also possible.
[0061]
  The tube connection port may be a tube connector whose cross section is shown in FIG. 1, for example. That is, a straight pipe joint in which a partition ring having an inner diameter equal to the inner diameter of the pipe is provided in the center of a short pipe having an inner diameter slightly larger than the outer diameter of the pipe 2, and the upper and lower pipes are sandwiched between the partition rings. 2, 2 'are connected so as to face each other. A water stop ring made of rubber or the like (not shown) may be attached to the pipe contact surface of the partition ring as necessary.
[0062]
  To connect the pipe 2, when a rope (not shown) that suspends the pipe is loosened and the pipe 2 is lowered, the pipe 2 has its sliding tool 21 along the rail 11. The shaft 1 is lowered while keeping the axis vertical. Therefore, the tube axis of the tube connection port (for example, the tube receiving port) of the lower tube, for example, which has been previously lowered in the same manner, coincides with the tube axis of the tube 2 (for example, the tube insertion port), When the pipe 2 is lowered as it is, the pipe connection ports 23 are securely connected without causing an axis shift.
[0063]
  This process is repeated to form a pipe line by connecting the necessary vertical pipes. A mortar or the like is pressed into the gap between the pipe line and the sheath pipe 1 and hardened to complete the installation of the vertical pipe.
[0064]
  FIG. 3 is a longitudinal sectional view of another example of a sewage vertical pipe laid by the pipe laying method of the present invention. The resin concrete pipe 2 has a plurality of protrusions 3 (only one is shown in the figure) on the outer peripheral surface in the vicinity of both pipe ends of the pipe 2 so that the intervals between the protrusions 3 are the same. Is fixed to a belt-like body 22 that is wound around the tube axis in a direction perpendicular to the tube axis. Three or more protrusions 3 are used for each band.
[0065]
  The protruding height of each protrusion 3 is made slightly smaller than the distance between the outer peripheral end of the protrusion 3 and the inner wall surface of the sheath 1. The gap between the outer peripheral end of the protrusion 3 and the sheath 1 inner wall surface may be within the allowable joining range of the connection port 23 provided at the tube end of the tube 2, and the range determined by the tube diameter. As long as it is selected, it may be determined appropriately.
[0066]
  Further, the width of the protrusion 3 is not particularly limited, but if it is too wide, the outermost peripheral end surface of the protrusion 3 may not follow the bend of the inner peripheral surface of the tube 1. In addition to the accuracy required, when the mortar is filled around the vertical pipe after the vertical pipe is arranged, the flow of the mortar may be hindered and the filling may be insufficient. It may be determined and selected as appropriate according to the tube diameter.
[0067]
  The number of protrusions fixed to one belt-like body 22 is three or more. That is, with two or less, the backlash of the pipe 2 in the sheath 1 is within the range of the gap in the direction in which the protrusion 3 is attached, but in the direction without the protrusion 3. This is because the tube shaft of the tube 2 is displaced from the tube shaft of the sheath 1 because a large vibration occurs.
[0068]
  The shape of the protrusion 3 is not particularly limited. However, since the tube 2 smoothly descends in the sheath tube 1, for example, as shown in FIG. It is advantageous if the surface on the side is a tapered surface and is a plate-like body or spring-like body having a relatively narrow width or a wheel. In addition, the outer peripheral end surface that contacts the sheath 3 of the protrusion 3 may be subjected to a sliding process with, for example, a fluororesin.
[0069]
  4A is a cross-sectional view showing an example of the shape of the protrusion 3 fixed to the outer peripheral surface near the upper and lower ends of the tube 2, and FIG. 4B is a cross-sectional view showing an example of another shape. 4C is a cross-sectional view showing an example of still another shape. In the case of FIG. 4 (a), the protrusion 3 is made of iron having a sheath sliding surface on the sheath sliding side with a fluorine-based resin 31, and is perpendicular to the tube axis on the outer peripheral surface near the upper and lower ends of the tube 2. It is fixed by welding to an iron plate strip 22 wound tightly in the direction. Of course, it may be fixed with bolts and nuts, and the method is not particularly limited.
[0070]
  Further, the protrusion 3 may be fixed to the tube 2 via an elastic body (not shown). In this case, even if the projection 2 is swung while the tube 2 is lowered and the projection 3 collides with the inner surface of the sheath 1, the possibility that the sheath 1 or the projection 3 is damaged is reduced. As an elastic body, rubber, a spring, etc. can be used conveniently.
[0071]
  Or as FIG.4 (b) shows, the protrusion 3 may be made into the shape which is a steel plate and itself has spring elasticity.
[0072]
  As in the case of the invention 4 (c), in the case where the projection 3 is a wheel having a pipe fixed via the rubber plate 32, even if the wheel collides with the inner peripheral surface of the sheath 1, the wheel rotates and the pipe The resistance decreases with respect to the descent of 2, and a smooth descent can be expected. However, sufficient care must be taken so that the direction of rotation of the wheels is correct and parallel to the tube axis of the tube 1 or tube 2. This is because when the wheel is deviated from the axial direction, the tube 2 tends to move in that direction when the wheel rotates, so that the tube axis may deviate.
[0073]
  FIG. 5 is a partial cross-sectional view of an example of a pipe receiving port provided with the receiving jig according to the fourth aspect. In the case of this example, the receiving jig 4 is made of metal, and when the receiving jig 4 is a separately created member, for example, as an example, FIG. An abutting portion 43 having an inner diameter that is the same as the inner diameter of the end portion of the tube receiving port is provided in the inner part of the short tube 41 having an inner diameter that can be fitted into the tube receiving port 232, and the inner diameter of the abutting portion 43 from the other end of the abutting plate 43. A tapered surface 42 that gradually increases in diameter is provided. The receiving jig 4 has an end of the pipe insertion opening 231 that is in contact with the tapered surface 42 of the receiving jig 4 when the pipe insertion opening 231 of another pipe is brought into contact with the pipe receiving opening 232 and moved to the tube receiving opening 232 side. The outer peripheral surface of the portion is slid along the tapered surface 42 and acts so that the tube shaft of the tube receiving port 232 and the tube shaft of the tube insertion port 231 are connected in alignment.
[0074]
  Note that triangular slits 44 may be provided at intervals in the tapered surface portion. In this case, even if the pipe collides with an impact force so large that the receiving jig is deformed, only the metal plate between the slits bends and the deformation of the slit 44 does not reach any other. The sliding has an effect that is hardly affected.
[0075]
  In the case of this example, the connection method between the tube receiving port 232 and the receiving jig 4 is simply by fitting the short tube portion 41 into the ring receiving port.
[0076]
  The receiving jig 4 may be made of any material as long as it is not damaged when the pipe opening is abutted and the end face of the pipe insertion has a strength capable of sliding on the tapered surface 42. For example, iron, Metals and alloys such as stainless steel, copper, aluminum, brass and bronze; Thermoplastic resins such as polyethylene, polypropylene, vinyl chloride resin and acrylic-styrene-butadiene copolymer resin; Reinforced heat such as fiber reinforced polyester and resin concrete Examples thereof include curable resins; reinforced resins such as fiber-reinforced thermoplastic resins; natural products such as processed products such as wood, wood pieces, and wood powder; and inorganic materials such as cement.
[0077]
  The taper slope of the taper surface 42 of the receiving jig 4 may be an angle so long as the taper surface 42 does not become too long and the tube end surface of the tube inlet can smoothly slide on the taper surface 42. The angle is about 30 ° to 60 ° from the tube axis direction. The maximum outer diameter of the taper portion must be smaller than the inner diameter of the sheath tube 1, and it is sufficient that the mortar or the like has a size that can be smoothly filled when the mortar or the like is placed in the gap after placing the tube. The sheath 1 may be selected and determined as appropriate depending on the inner diameter of the tube 1.
[0078]
  The receiving jig 4 having the tapered surface 42 used here is a component attached to the outside of the tube receiving port 232. As shown in FIG. 6, the diameter of the tube wall at the tip of the tube receiving port 232 is gradually increased. It may be a guide receiving jig that is extended and protruded.
[0079]
FIG. 7 is a partial cross-sectional view of an example of a case where a vertical pipe is laid by the connection method of the invention 5 and is connected using a pipe in which the receiving jig of the invention 4 is provided at the pipe receiving port.
[0080]
  The short pipe portion 41 of the receiving jig 4 is fitted into the pipe receiving port 232 of the lower pipe 2 that has already been arranged, and the tapered surface 42 side is opened upward. The edge rim of the end face of the newly inserted pipe 2 that is suspended by a rope or the like and is lowered from above abuts against the tapered surface 42 and further descends. The tube shaft is slid and guided into the tube receiving port 232, and the tube axes are connected to each other.
[0081]
【The invention's effect】
  As described above, the vertical pipe laying method of the present invention is accurate even without laying an operator at the pipe connection portion even when laying a vertical pipe having a large diameter and a long extension. This is a vertical pipe laying method capable of connecting fixed-length pipes to each other, particularly a pipe laying method suitable for laying a large-diameter vertical sewer pipe.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of an example of a sewer vertical pipe laid using a sheath pipe to which a rail is fixed.
FIG. 2A is a cross-sectional view of an example of a combination of a rail and a sliding tool.
  (B) It is sectional drawing of another example of the combination of a rail and a sliding tool.
(C) It is sectional drawing of another example of the combination of a rail and a sliding tool.
  (D) It is sectional drawing of another example of the combination of a rail and a sliding tool.
FIG. 3 is a partial cross-sectional view of another example of a sewage vertical pipe laid using a pipe to which a protrusion is fixed.
FIG. 4A is a cross-sectional view showing an example of a projection having a plate-like body.
(B) It is sectional drawing which shows an example of what a protrusion is a spring-like body.
  (C) It is sectional drawing which shows an example of what a protrusion is a wheel.
FIG. 5 is a partial cross-sectional view showing an example of a tube receiving port provided with a receiving jig.
FIG. 6 is a partial cross-sectional view showing an example of a guide receptacle.
FIG. 7 is a partial cross-sectional view showing an example of connection using a pipe in which a receiving jig is provided at a pipe receiving port.
[Explanation of symbols]
1 sheath tube
  11 rails
12 rail fixture
2, 2 'tube
21, 21 'Slider
215 Bolt stay
  216, 216 'bolt
217, 217 'nut
  218 long hole
  219 Clearance adjustment rod
22, 22 'strip
23 Pipe connection
  231 pipe outlet
  232 pipe receptacle
3 Projections
4 Receiving jig
41 Short pipe section
  42 Tapered surface
  43 End plate
44 slits

Claims (5)

  A method of laying a pipe line in a sheath pipe arranged in the vertical direction, with projections attached to the outer peripheral surface in the vicinity of the upper and lower ends of the pipe that is provided in the sheath pipe and forms a vertical pipe line. 3 or more fixed at equal distance intervals, the above pipes are sequentially lowered inside the sheath, the previously lowered tube and the descending tube are connected, and after connecting, the gap between the sheath and the tube is filled with a filler. Vertical pipe laying construction method characterized by using vertical pipes. Vertical pipe laying method according to claim 1, wherein the protrusions are wheels.   A method of laying a pipe line in a sheath pipe arranged in a vertical direction, and a pipe that is provided in the sheath pipe to form a vertical pipe line, and a fixing portion in which one end of a short tubular body is attached to a pipe receptacle The fixing part of the receiving jig whose other end has the same inner diameter as the inner diameter of the pipe receiving port and has a tapered surface that gradually expands in the opposite direction to the fixing part is attached to the pipe receiving port of the pipe, and the tube receiving port or the tube inserting port Place the next pipe connected to the above-mentioned pipe in the sheath pipe so that the pipe inlet or the pipe receptacle is directed downward, and then descend the inside of the sheath. Abuts the taper surface of the tool, slides the tube inlet along the taper surface, guides it to the tube receptacle, and connects the tube receptacle of the tube to the tube receptacle of the next tube. Vertical pipe laying construction method characterized by using vertical pipes. The pipe connection method according to claim 1 or 2 , wherein a lower end of the pipe is a pipe receiving opening or a pipe insertion opening, an upper end is a pipe insertion opening or a pipe receiving opening, and the receiving jig according to claim 3 is provided in the pipe receiving opening. A vertical pipe laying method characterized by A method of laying a pipeline in a sheath pipe arranged in a vertical direction, wherein at least one linear rail is placed on the sheath inner wall along the tube axis of the sheath pipe with the surface of the rail on the tube axis side. A sliding tool that is fixed so that the distance to the tube axis of the tube is a constant distance, and is slidably engaged with the rail on the outer peripheral surface of the tube that is provided in the sheath and forms a vertical conduit. Fix the sliding tool and the rail together to lower the inside of the sheath sequentially, connect the previously lowered pipe and the descending pipe to make a vertical pipe, and the lower end of the pipe is the pipe receiving port Alternatively, a pipe laying method in a vertical direction, characterized in that a pipe insertion opening is provided, and an upper end is a pipe insertion opening or a pipe receiving opening, and the receiving jig according to claim 3 is provided at the pipe receiving opening.

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