JP2010222877A - Cut-off wall device for pipe conduit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cut-off wall device for pipe conduit capable of supporting a cut-off wall stably and facilitating the work for installing it. <P>SOLUTION: This cut-off wall device 1 is provided with the cut-off wall 6 formed into such size that dams up the water stream flowing in a lower part of the pipe conduit 2 having a circular cross section and having an outer peripheral face capable of being watertightly pressed on an inner peripheral face 2a of the pipe conduit 2, a water passing port 7 passing through the cut-off wall 6 in the directions of surface and rear surface, a fixing means 10 for pressing the cut-off wall 6 on the inner peripheral face 2a of the pipe conduit 2 and fixing it, and a supporting leg 27 for supporting the cut-off wall 6 from either or both of the directions of surface and rear surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a water blocking wall of a pipe used for blocking and bypassing the water flow flowing in the pipe when the inside of the pipe buried in the ground such as a sewer pipe is inspected and repaired. Relates to the device.

  When checking the inside of sewer pipes or repairing pipes, the sewage flowing through the bottom of the pipes interferes with the work. For this reason, water barrier devices are provided on the upstream and downstream sides of the work space in the pipe, and a bypass pipe is passed between both water barrier devices to prevent sewage blocked by the upstream water barrier device. A work space is secured by bypassing to a downstream water blocking wall device through a bypass pipe.

Patent Document 1 listed below discloses a water blocking wall device used for the above-described purposes. This water stop device is formed in a size that can dam the water flow that flows through the lower section of the pipe rod, and has a water stop wall having an outer peripheral surface that can be watertightly crimped to the inner peripheral surface of the pipe rod, A water passage through which the water wall penetrates in the front and back direction (front-rear direction), and a bypass pipe is connected; and a fixing means for fixing the water stop wall by crimping to the inner peripheral surface of the pipe rod.
The fixing means includes a fixing band having a length substantially equal to the difference between the inner peripheral length of the pipe rod and the outer peripheral length of the water blocking wall. And while arranging this fixed band along the inner peripheral surface of the pipe rod, pressing the both ends in the width direction of the water blocking wall downward at both longitudinal ends of the fixed band, the outer peripheral surface of the water blocking wall It is comprised so that it may be crimped | bonded to the inner peripheral surface of a pipe rod.

Japanese Patent Laid-Open No. 2004-137776

  The water blocking wall device is installed in the pipe as follows. First, the water blocking wall device is carried into the pipe trough, and the outer peripheral surface of the water blocking wall is brought into contact with the lower part of the inner peripheral surface of the pipe trough and is manually held. And the both ends of a fixed band are contact | abutted to the width direction both ends of a water stop wall, and the substantially whole fixed band is along the inner peripheral surface of a pipe rod. Thereby, the outer peripheral surface of the water blocking wall is pressure-bonded to the inner peripheral surface of the pipe rod, and the water blocking wall is fixed. However, if there is a flow of sewage in the pipe during the installation work of the water blocking wall device, the water blocking wall may be tilted forward or backward due to water pressure. For this reason, it is necessary to attach the fixing band after holding the water blocking wall firmly by hand, which requires a lot of labor for the installation work.

  Further, in the water blocking wall device of Patent Document 1, the fixed band has a length that is half or more of the inner peripheral surface of the pipe rod, and the length is such that it is used for a pipe rod having a large inner diameter. become longer. However, when the fixed band becomes longer, the weight increases and it becomes difficult to work along the inner peripheral surface of the pipe rod, and the fixed band may be bent downward due to its own weight and easily come off. Therefore, the fixing method using the fixing band as in Patent Document 1 is not suitable for a pipe rod having a large inner diameter (for example, a tube rod having a diameter of 1500 mm or more).

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a water blocking wall device that can facilitate installation work by supporting the water blocking wall in a stable state. And

  The water blocking device of the present invention is formed to have a size capable of blocking the water flow flowing through the lower part of the pipe having a circular cross section, and has an outer peripheral surface capable of being pressure-tightly crimped to the inner peripheral surface of the pipe. A water blocking wall, a water passage opening penetrating the water blocking wall in the front and back direction, a fixing means for pressing the water blocking wall against the inner peripheral surface of the pipe rod and fixing the water blocking wall in the front and back direction Or a support leg supported from both.

  As described above, since the water blocking wall device of the present invention includes the support legs that support the water blocking wall from one or both of the front and back directions, the water blocking wall is prevented from falling down in the front and back directions by the support legs. Can do. Therefore, even if there is a water flow in the pipe during the installation work, the water blocking wall can be stabilized, and the installation work can be easily performed.

  The support legs are preferably provided on both sides in the width direction across the center line in the width direction of the tube rod. Moreover, although the support leg may be provided only on one side of the front and back direction of the water blocking wall, it is more preferable to be provided on both sides of the water blocking wall in the front and back direction. With these configurations, the water blocking wall can be supported more stably.

  It is preferable that the support leg is detachably attached to the water blocking wall. By removing the support legs from the water blocking wall, the number of protrusions from the water blocking wall can be reduced and the weight can be reduced, and transportation of the water blocking wall and handling such as packaging can be facilitated.

The fixing means extends upward from both sides in the width direction of the upper edge portion of the water blocking wall, and a pair of support arms in the width direction in which an upper end portion is disposed in the vicinity of the inner peripheral surface of the pipe rod, and the pair of supports. An elastically deformable fixing band disposed between the upper end portions of the arms along the inner peripheral surface of the tube rod and having both longitudinal ends thereof supported by the upper end portions of the pair of support arms. Preferably it is.
Thus, by providing a pair of support arms in the width direction at the upper edge of the water blocking wall and supporting the both ends of the fixed band with the upper ends of the support arms, the fixed band can be made shorter than before. For this reason, a fixing method using a fixing band can be suitably employed even for a pipe rod having a large inner diameter.

  The pair of support arms are provided such that the posture can be changed between a storage posture along the upper edge of the water blocking wall and a support posture that swings upward from the storage posture to support the fixed band. It is preferable. By setting the support arm to the storage position, handling such as transportation and packing becomes easy, and by setting the support arm to the support position at the time of installation, both ends in the longitudinal direction of the fixed band can be appropriately supported.

  It is preferable that the pair of support arms is provided so that the position of the pair of support arms can be adjusted in the width direction with respect to the upper edge portion of the water blocking wall. When the position of the support arm can be adjusted in this way, the distance between the tip portions between the support arms can be adjusted according to the length of the fixed band or the like.

  It is preferable that the upper edge portion of the water blocking wall is constituted by a bar material extending in the width direction of a thickness that can be grasped by an operator. With such a configuration, the bar can be held in the hand as a handle, and handling such as transportation of the water blocking wall can be easily performed. In addition, it is possible to maintain the posture of the water blocking wall by tying a rope or the like to the bar.

  It is preferable that the water blocking wall has a transparent water blocking plate that blocks the water flow in the pipe wall. By having a transparent water stop plate, the level of water flowing in the pipe can be confirmed from the work space side.

  The water stop wall includes a water stop plate that blocks the water flow in the pipe and an outer frame body that supports an outer peripheral portion of the water stop plate, and the outer frame body has the front and back surfaces of the water stop plate. It is preferable to provide an insertion groove that can be inserted and removed in a direction perpendicular to the direction. Thereby, a water stop board can be easily attached or detached with respect to an outer side frame. In addition, if the water stop plate is removed from the outer frame during installation work, it will be less affected even if there is a water flow in the pipe frame, and the water stop wall will be easily stabilized. Can be held.

  A cylindrical sealing member that can be elastically deformed by being crimped to the inner peripheral surface of the pipe rod may be provided on the outer peripheral surface of the water blocking wall. By making the sealing member into a cylindrical shape in this way, the amount of elastic deformation can be increased, and the sealing member is elastically deformed following the difference in inner diameter of the pipe rod and the unevenness of the inner peripheral surface to The sealing member can be brought into close contact with the peripheral surface to improve the sealing performance.

  Moreover, the sealing member which has a lip | rip part which can be elastically deformed by crimping | bonding to the outer peripheral surface of the said water stop wall by the inner peripheral surface of the said pipe rod may be provided. Since the sealing member has the lip portion as described above, the elastic deformation amount can be increased, and the sealing member (lip portion) can be elastically following the difference in the inner diameter of the pipe rod and the irregularity of the inner peripheral surface. The sealing member can be brought into close contact with the inner peripheral surface of the pipe rod to enhance the sealing performance.

  According to the present invention, the water blocking wall can be stably supported by the support legs, and the installation work can be easily performed.

1 is a perspective view showing a water blocking wall device according to a first embodiment of the present invention. (A) is a plane sectional view showing a temporary waterway device built inside a sewer pipe using a water blocking wall device, and (b) is a side sectional view of the same. It is a front view of a water blocking wall apparatus. It is AA arrow sectional drawing of FIG. It is a front view which expands and shows the grounding part of a support leg. It is sectional drawing which expands and illustrates the attachment site | part of the upper part side of an attachment bar. (A) is explanatory drawing which looked at the adjustment part to the radial direction outer side from the center side of a pipe rod, (b) is BB arrow sectional drawing of (a). It is a front view which shows the modification of a fixing means. It is a perspective view which shows the water stop wall apparatus which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the sealing member of the water stop apparatus which concerns on the 3rd Embodiment of this invention. It is a front view which shows the water blocking wall apparatus which concerns on the 4th Embodiment of this invention. It is a schematic perspective view which shows the water stop wall of the water stop wall apparatus which concerns on the 5th Embodiment of this invention. (A) is a schematic top view of a water stop wall, (b) is side sectional drawing.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a water blocking wall device 1 according to an embodiment of the present invention, and FIG. 2A shows a temporary water channel device 3 built inside a sewer pipe 2 using the water blocking wall device 1. FIG. 2B is a cross-sectional side view illustrating the same. As shown in FIG. 2, the temporary waterway device 3 includes a temporary waterway that bypasses sewage in the cross section of the horizontal pipe 2 connected to the manhole vertical pipe 4, thereby This is to secure a working space for inspecting or repairing the surface. In the following description, the extending direction of the pipe rod 2 is defined as the front-rear direction, and the horizontal direction orthogonal to this direction is defined as the width direction or the left-right direction.

  The temporary waterway device 3 is provided on the water stop wall device 1 disposed on the upstream side and the downstream side of a predetermined construction section inside the pipe trough 2 and the water stop wall 6 of the water stop wall device 1. And a bypass pipe 5 that connects the water inlets 7 to each other. By flowing all the sewage blocked by the upstream water stop wall device 1 to the bypass pipe 5, the outside of the bypass pipe 5 is provided. It is configured to secure a work space.

  The bypass pipe 5 is made of a hose member having such a flexibility that the center axis can be bent, and more specifically, a bellows hose having an outer peripheral wall of the bellows structure 5a is adopted. For this reason, by moving the hose member in the width direction of the pipe rod 2 in the construction section partitioned by the water blocking wall device 1, almost the entire inner peripheral surface of the pipe rod 2 can be exposed. The bypass pipe 5 has an inner diameter of about 200 mm due to the ease of handling and the required amount of drainage.

  3 is a front view of the water blocking wall device 1, and FIG. 4 is a cross-sectional view taken along the line AA in FIG. It is a top view of the water stop wall 6 with which this water stop wall apparatus 1 is provided. The water blocking wall device 1 is formed to have a size capable of blocking the water flow flowing through the lower cross section of the pipe rod 2 having a circular cross section, and has an outer peripheral surface that is crimped to the inner peripheral surface 2a of the pipe rod 2. The water blocking wall 6, the water flow port 7 formed so as to penetrate the water blocking wall 6 in the front and back direction, and the outer peripheral surface of the water blocking wall 6 are pressed against the inner peripheral surface 2 a of the pipe rod 2. A fixing means 10 for fixing the water blocking wall 6 to the pipe rod 2 is provided. On the outer peripheral surface of the water blocking wall 6, a seal member 11 that can be compressed and deformed in the radial direction (thickness direction) is provided.

  The water blocking wall 6 includes a water blocking plate 13 that blocks the water flow, and an outer frame 14 that constitutes an outline of the water blocking wall 6 and to which the outer peripheral edge of the water blocking plate 13 is attached. The water stop plate 13 is formed in a size that can cover the range of the height of 1/3 to 1/2 of the lower side of the inner cross section of the pipe rod 2. The water stop plate 13 is formed in a linear shape with the upper edge being substantially horizontal, and the lower edge is formed in an arc shape along the inner peripheral surface 2a of the pipe rod 2 to block the water flow flowing through the lower section of the pipe rod 2. It is possible to stop. Moreover, the water stop plate 13 is formed of a transparent synthetic resin material such as vinyl chloride resin. By forming the water blocking plate 13 with a synthetic resin material, the weight of the water blocking wall device 1 can be reduced, and by making the water blocking plate 13 a transparent material, it is possible to visually check the level of water blocked. It becomes possible. However, the water stop plate 13 may be formed of a metal plate material. In this case, the rigidity of the water stop wall device 1 can be increased.

  The outer frame body 14 includes an upper frame member 16 and a lower frame member 17. The upper frame member 16 is constituted by two front and rear bars 18 extending in the horizontal direction. The bar 18 has a thickness that allows an operator to hold it with a hand. An upper flange portion 19 that protrudes downward (inward) is provided on the lower surface of one bar 18. The lower frame member 17 is configured by a belt-like plate material that is curved in an arc shape along the inner peripheral surface 2 a of the tube rod 2, and both end portions in the width direction are fixed to both end portions in the width direction of the upper frame member 16. Has been. An outer peripheral flange portion 20 that protrudes upward (inward) is provided on the inner peripheral surface of the lower frame member 17. An outer edge portion of the water stop plate 13 is fixed to the upper flange portion 19 and the outer peripheral flange portion 20 by a fastener 21 made of bolts and nuts.

  A seal member 11 is provided on the outer peripheral surface of the lower frame member 17. The seal member 11 is a member that can be compressed and deformed, and is made of, for example, foam resin or rubber. The seal member 11 is provided on the outer peripheral surface of the lower frame member 17 with a uniform thickness in the circumferential direction (the same cross-sectional shape in the circumferential direction). The seal member 11 is compressed in a watertight manner against the inner peripheral surface 2a of the pipe rod 2 by being compressed and deformed.

  The water stop plate 13 is provided with a hole 24 penetrating in the water flow direction, and a pipe member 25 is attached continuously to the hole 24. The pipe member 25 serves as the water flow port 7, and the pipe member 25 is connected to the pipe member 25 by fitting the end portion of the bypass pipe line (FIG. 2).

  The water blocking wall device 1 includes support legs 27 that support the water blocking wall 6. There are a total of four support legs 27 according to this embodiment. As shown in FIGS. 3 and 4, the support legs 27 are provided on both sides of the water blocking wall 6 at symmetrical positions with respect to the center line L <b> 1 in the width direction of the pipe rod 2. It has been. As shown in FIG. 4, each support leg 27 has a first portion 28 projecting from the plate surface of the water blocking plate 13 in the front and back direction (front-rear direction), and substantially downward from the front and rear end portions of the first portion 28. The leg part 30 formed in the substantially L shape by the 2nd part 29 bent in the direction, and the grounding part 31 provided in the front-end | tip part (lower end part of the 2nd part 29) of this leg part 30 are provided. ing. The grounding portion 31 is grounded to the inner peripheral surface 2 a of the pipe rod 2 at a position away from the water blocking wall 6 in the front and back direction (front-rear direction).

The base end portion (the end portion of the first portion 28) of the leg portion 30 is connected to a mounting bar 32 extending in the vertical direction. The mounting bar 32 has a fastener 33 whose upper and lower portions are bolts and nuts. Is attached to the upper flange portion 19 and the outer peripheral flange portion 20 in a detachable manner.
A reinforcing member 34 is obliquely installed between the mounting bar 32 and the leg 30.

  The attachment bar 32 can be attached in the form as shown in FIG. 6, for example. FIG. 6 is an enlarged cross-sectional view illustrating the attachment portion on the upper side of the attachment bar 32, but the lower portion of the attachment bar 32 can be attached in the same manner. In the form shown in FIG. 6A, the fastener 33 is composed of a bolt 35 and a nut 36, and the threaded portion of the bolt 35 is connected to one mounting bar 32, the water stop plate 13, the upper flange portion 19, and the other mounting bar. Both mounting bars 32 are fastened together by being passed through 32 and fastening a nut 36. The outer periphery of the head of the bolt 35 and the nut 36 is formed of a synthetic resin material or the like and has a non-slip unevenness on the surface, so that it can be fastened by hand without using a tool. ing.

In the form shown in FIG. 6B, the fastener 33 includes a male screw portion 38 formed on the upper flange portion 19 so as to protrude in the front-rear direction, and a nut 39 screwed to the male screw portion 38. Each mounting bar 32 is fixed by passing each male screw part 38 through the mounting bar 32 and fastening the nut 39. The outer peripheral surface of the nut 39 is also configured to be fastened by hand without using a tool in the same manner as described above.
Although not shown, a nut is fixed to the upper flange portion 19, and a bolt with a head passing through the mounting bar 32 is screwed to the nut to fix the mounting bar 32. Also good.

As shown in FIG. 3, the support legs 27 are attached so as to be inclined so that the grounding portion 31 is grounded substantially perpendicularly to the inner peripheral surface 2 a of the pipe rod 2. That is, the second portion 29 and the attachment bar 32 of the support leg 27 are attached along the virtual line L2 passing through the center (the center of curvature of the outer peripheral surface of the water blocking wall 6) O of the pipe rod 2.
FIG. 5 is an enlarged front view showing the grounding portion 31. The grounding portion 31 includes a male screw portion 41 that is formed in a substantially disc shape and protrudes upward. The grounding portion 31 is attached to the leg portion 30 by screwing the male screw portion 41 into the female screw portion 42 formed in the second portion 29 of the leg portion 30. Further, by adjusting the screwing amount of the male screw part 41 with respect to the female screw part 42, the projecting amount of the grounding part 31 with respect to the leg part 30 can be adjusted, and thereby, the inner peripheral surface 2a of the tube rod 2 can be reliably secured. The grounding part 31 can be grounded.

  As shown in FIGS. 1 and 3, the fixing means 10 applies a load to both ends in the width direction of the water blocking wall 6 that is symmetric when viewed from the center line L <b> 1 in the width direction of the inner hollow section of the pipe rod 2. And a pair of support arms 44 in the width direction and a fixed band 45 provided between the upper ends of the pair of support arms 44. The fixing means 10 functions to fix the water blocking wall 6 in the pipe rod 2 in a state where the sealing member 11 is pressed against the inner peripheral surface 2a of the pipe rod 2 by pushing down both ends in the width direction of the water blocking wall 6. have.

The support arm 44 is provided on the upper surface of the upper frame member 16 of the outer frame body 14. A base end portion of the support arm 44 is swingably attached to a shaft support portion 47 fixed to both end portions in the width direction of the upper frame member 16 via a shaft body 48 in the front-rear direction. Each support arm 44 swings inward in the width direction (center line L1 side) to take a storage posture along the upper portion of the upper frame member 16 (indicated by a two-dot line) and swings outward in the width direction. As a result, the tip end (upper end) takes a support posture (stand-up posture) in contact with the inner peripheral surface 2a of the tube rod 2. In addition, first and second band receiving portions 49 and 50 that receive both ends in the longitudinal direction of the fixed band 45 when the support posture is taken are provided at the distal end portion of each support arm 44.
Note that the support arm 44 in the support posture is inclined so that the distal end portion is located on the outer side in the width direction with respect to the base end portion (position of the shaft body 48).

  The fixing band 45 is made of a plate material that is elastically deformable in the thickness direction, for example, a rubber plate material, and has a length substantially equal to the inner peripheral length of the tube rod 2 between the distal ends of the pair of support arms 44 in a support posture. Is formed. The fixing band 45 may be a hard plastic spring plate. A handle portion 52 is provided near the center of the fixing band 45 in the longitudinal direction. The respective ends in the longitudinal direction of the fixed band 45 are received and supported by the tip portions (the first band receiving portion 49 and the second band receiving portion 50) of the pair of support arms 44, respectively. Then, by pressing the fixing band 45 along the inner peripheral surface 2 a of the pipe rod 2, a circumferential compressive force acts on the fixing band 45, and as a result, the fixing band 45 is interposed via the support arm 44. Then, both end portions in the width direction of the water blocking wall 6 are pushed down, and the seal member 11 is pressure-bonded to the inner peripheral surface 2 a of the pipe rod 2.

  The first band receiving portion 49 is formed in a U-shape that is open upward so that one end in the longitudinal direction of the fixed band 45 can be inserted. An adjusting portion 54 is provided at the other end of the fixed band 45, and the second band receiving portion 50 is formed in a flat plate shape so that the adjusting portion 54 can be supported and supported.

  The adjustment unit 54 can change the distance between the end of the fixed band 45 and the second band receiving unit 50 of the support arm 44. Fig.7 (a) is explanatory drawing which looked at the adjustment part 54 to the radial direction outer side from the center side of the pipe rod 2, FIG.7 (b) is BB arrow sectional drawing of (a). The adjustment portion 54 includes a screw shaft 56 having a vertical axis, and an attachment member 57 that is fixed to a longitudinal end portion of the fixing band 45 and moves up and down as the screw shaft 56 rotates. . The mounting member 57 includes a pair of opposing walls 57a and 57b, a bottom wall 57c bent from the lower end of the one opposing wall 57b, and a pair of opposing walls 57a and 57b and a pair of bottom walls 57c that connect both ends of each other. And a side wall 57d. An end portion of the fixing band 45 is inserted between the pair of opposing walls 57a and 57b and the pair of side walls 57d, and is fixed by a fixture 58 including bolts and nuts erected on the pair of opposing walls 57a and 57b. . The end of the fixed band 45 is in contact with the bottom wall 57c. Cutout portions 45 a that avoid interference with the screw shaft 56 are formed on both sides in the width direction of the end portion of the fixed band 45. Two mounting nuts 60 are fixed to the bottom wall 57 c of the mounting member 57, and a screw shaft 56 is screwed to each nut 60.

  A contact portion 62 is provided at the lower end portion of the screw shaft 56. The contact portion 62 is formed in a substantially disk shape, and the lower surface thereof is in contact with the upper surface of the second band receiving portion 50. The contact portion 62 is manually rotatable on the second band receiving portion 50, and the attachment nut 60 screwed to the screw shaft 56 is moved along the screw shaft 56 by rotating the contact portion 62. The distance between the second band receiving part 50 and the end of the fixed band 45 can be adjusted. As a result, the pressing force of the fixing band 45 against the inner peripheral surface 2a of the pipe rod 2 is adjusted.

  The operation | work which installs the water stop wall apparatus 1 of the said embodiment in the pipe tub 2 is demonstrated. First, the water blocking wall device 1 is carried into the pipe rod 2. At the time of carrying in, the support leg 27 is removed from the water blocking wall 6 and the support arm 44 is folded into the storage posture. Thereby, the part which protrudes from the water stop wall 6 decreases, and handling, such as conveyance, becomes easy. Moreover, since the water stop plate 13 of the water stop wall 6 is made of a synthetic resin and is lightened, handling such as transportation becomes easier. Further, the upper frame member 16 of the water blocking wall 6 is constituted by a bar 18, and the bar 18 is formed to a thickness that can be grasped by an operator. By holding the bar 18 by hand, In addition, the water blocking wall 6 can be transported more easily.

  Next, the support leg 27 is attached to the water blocking wall 6, and then the water blocking wall 6 is positioned at a predetermined installation location, and the grounding portion 31 of the support leg 27 is grounded to the inner peripheral surface 2 a of the pipe rod 2. At this time, even if there is a flow of water in the pipe rod 2, the water stop wall 6 can be supported by the support leg 27 being grounded, and the water stop wall 6 is prevented from being tilted or tilted. be able to. In addition, the support legs 27 are provided on both sides of the center L1 in the width direction of the pipe rod 2 and are provided on both sides in the front and back direction, so that the water blocking wall 6 is more stable. Can be supported. The support legs 27 function to stably support the water blocking wall 6 even after the water blocking wall 6 is fixed to the inner peripheral surface 2a of the pipe rod 2.

  Next, the support arm 44 is swung upward to achieve a support posture, and the tip end portion of the support arm 44 is brought into contact with the inner peripheral surface 2 a of the pipe rod 2. Then, the longitudinal ends of the fixed band 45 are placed on the first band receiving portion 49 and the second band receiving portion 50, respectively, and the fixed band in a bent state (indicated by a two-dot chain line in FIG. 3) is raised. Press against the inner peripheral surface 2a of the tube rod 2. As a result, the fixing band 45 is elastically deformed into an arch shape along the inner peripheral surface 2 a of the pipe rod 2, and an elastic restoring force (stretching force) generated by circumferential compression is provided via the support arm 44 to the water blocking wall 6. By acting on both end portions in the width direction, the water blocking wall 6 is pushed downward, the seal member 11 is compressed and deformed, and is crimped to the inner peripheral surface 2a of the pipe rod 2. In addition, the degree of pressure bonding of the seal member 11 can be adjusted by using the adjustment unit 54.

  Since the fixing means 10 of the present embodiment includes the support arm 44 and the fixing band 45, the fixing band 45 can be shortened as compared with the conventional case where only the fixing band 45 is configured. Therefore, handling such as transportation and attachment / detachment work of the fixed band 45 is facilitated, and the problem that the fixed band 45 is bent and detached by its own weight due to the increase in length does not occur. Moreover, since it is not necessary to lengthen the length of the fixing band 45 so much with respect to the pipe rod 2 having a large inner diameter, the water blocking wall 6 using the fixing band 45 can be fixed to the pipe rod 2. . In addition, the water blocking wall apparatus 1 of this embodiment is applicable with respect to the pipe trough 2 whose pipe diameter is (phi) 1500-2000 mm, for example.

Further, since the support arm 44 is inclined slightly outward in the width direction in the support posture, when the circumferential tension force from the fixed band 45 acts, the inner peripheral surface of the tube 2 with the upper end portion facing outward in the width direction. 2a. Therefore, the support arm 44 does not naturally fall inward in the width direction, and the fixed state can be suitably maintained.
Moreover, since the support arm 44 is arrange | positioned at the width direction both ends of the water stop wall 6, and the fixed band 45 becomes an arch type along the inner peripheral surface 2a of the pipe rod 2, an operator straddles the water stop wall 6. Thus, the support arm 44 and the fixing band 45 are hardly disturbed when entering and leaving the construction section.

  On the other hand, in order to remove the water blocking wall device 1 from the pipe rod 2, the handle portion 52 provided in the fixed band 45 is pulled downward to break the arch shape of the fixed band 45, and the tension force by the fixed band 45 is released. . Then, both end portions of the fixing band 45 may be removed from the upper end portion of the support arm 44. As described above, since the handle portion 52 may be pulled downward in order to remove the fixing band 45, the removal work of the water blocking wall 6 is extremely simple. Moreover, the work which carries out the water stop wall 6 from the pipe rod 2 can be easily performed by folding the support arm 44 to the accommodation position and removing the support leg 27 from the water stop wall 6.

  Note that the fixing means 10 for fixing the water blocking wall 6 may have a configuration different from the configuration described above. For example, as shown in FIG. 8, the fixing means 10 fixes the water blocking wall 6 using a fixing band 45 having a length substantially equal to the difference between the inner circumferential length of the pipe rod 2 and the outer circumferential length of the water blocking wall 6. You may do. This fixing band (fixing method) is suitable for fixing the water blocking wall 6 to the pipe rod 2 having a smaller inner diameter as compared with the above-described embodiment. Can be applied. Further, the fixing means 10 has a water blocking wall by interposing a strut rod between both end portions and the center portion of the upper edge portion of the water blocking wall 6 and the upper side of the inner peripheral surface 2a of the pipe rod 2. 6 may be fixed.

  The support legs 27 are provided on both sides in the width direction of the water blocking wall 6 on the front and back sides of the water blocking wall 6, but may be provided in the center in the width direction. Further, the support legs 27 may be provided only on the front and back side of the water blocking wall 6. When the support legs 27 are provided on the front and back sides, it is more preferable to provide the support legs 27 on the downstream side in the water flow direction with respect to the water stop wall 6 in order to prevent the water stop wall 6 from falling due to the water flow.

  In the above embodiment, the support arm 44 is foldable on the upper edge of the water blocking wall 6, but may be fixed (adhered) to the upper edge of the water blocking wall 6. In this case, the support arm 44 may not be inclined outward in the width direction, and may stand vertically and be disposed at a position near the inner peripheral surface of the pipe rod 2. The fixing band 45 may be provided with adjusting portions 54 at both ends in the longitudinal direction.

  The upper frame member 16 of the outer frame body 14 is composed of two bar members 18, but a plate 65 that connects the two bar members 18 to each other in a part in the width direction (for example, the central portion in the width direction). (Illustrated by a two-dotted line in FIG. 3) may be provided. By providing such a plate 65, for example, when the fixing by the fixing band 45 is insufficient, a tension rod can be provided between the plate 65 and the upper end portion of the inner peripheral surface 2a of the pipe rod 2. It becomes possible to fix the water blocking wall 6 more firmly.

  FIG. 9 is a perspective view showing a water blocking wall device according to a second embodiment of the present invention. In the present embodiment, the configuration of the support leg 27 is different from that of the first embodiment, and other configurations are substantially the same as those of the first embodiment. The support leg 27 of the present embodiment is configured by partially projecting the center portion in the width direction of the lower frame member 17 of the outer frame 14 in the front and back direction. That is, the support leg 27 of this embodiment is formed integrally with the water blocking wall 6 (particularly, the lower frame member 17). The support legs 27 are brought into contact with the inner peripheral surface 2a of the pipe rod 2 so that the water blocking wall 6 can be prevented from falling in the front and back direction.

  In addition, you may provide the earthing | grounding part 31 (refer FIG. 5) which can adjust an up-and-down position as demonstrated in 1st Embodiment in the front-end | tip part of the support leg 27. FIG. In the illustrated example, the support legs 27 are provided only on one side in the front and back direction, but may be provided on the other side. Further, the support legs 27 may be formed on both the front and back sides of the lower frame member 17 or on both sides in the width direction. Further, the support leg 27 of the present embodiment may be provided on one side in the front and back direction, and the support leg 27 of the first embodiment may be provided on the other side.

  FIG. 10 is a cross-sectional view showing a sealing member of a water blocking wall device according to a third embodiment of the present invention. A seal member 11 shown in FIG. 10A is formed in a cylindrical shape (hollow shape) by an elastic material such as rubber. When the sealing member 11 is formed in a cylindrical shape in this way, the amount of elastic deformation in the radial direction (vertical direction) can be increased (for example, about 50 mm in the radial direction), and the inner diameter difference of the tube rod 2 and the inner peripheral surface 2a. Thus, the sealing member 11 can be suitably deformed in the radial direction following the unevenness, and the sealing performance can be improved.

  The cross-sectional shape of the cylindrical seal member 11 is not limited to a rectangular cross section as shown in FIG. 10A, but is a circular cross section (including an ellipse, an ellipse, a semicircle, etc.), a triangle or a pentagon or more polygon. The cross section may be a cross section with an irregular shape different from these. Further, the cylindrical seal member 11 is not limited to a shape that is maintained by the rigidity of the material, but may be a shape that is maintained by the air pressure inside the hollow. In this case, when the water blocking wall 6 is installed, the seal member 11 can be expanded by filling the inside of the seal member 11 with air. As a result, the seal member 11 can be deformed following the difference in inner diameter of the pipe rod 2 and the unevenness of the inner peripheral surface 2a, and the sealing performance can be further improved.

  The seal member 11 shown in FIG. 10 (b) is made of an elastic material such as rubber, and a plurality of lip portions 11a extending in the circumferential direction are formed on the outer circumferential portion in the front-rear direction. That is, the seal member 11 can follow the difference in the inner diameter of the pipe rod 2 and the unevenness of the inner peripheral surface 2a by the elastic deformation of the lip portion 11a in contact with the inner circumferential surface 2a of the pipe rod 2. Thus, the sealing property can be enhanced.

  When the seal member 11 as shown in FIG. 10 is used, the amount of deformation in the radial direction of the seal member 11 becomes large. Therefore, the length of the fixing band 45 (see FIG. 3) needs to be adjusted to accommodate this amount of deformation. It becomes. In the above-described embodiment, the fixing band 45 can be adjusted by the adjusting unit 54 shown in FIG. 7, but in this configuration, only the length range (for example, about 15 mm) of the screw shaft 56 can be adjusted. It is difficult to deal with 11 large deformation amounts.

  Therefore, the water blocking wall device of the fourth embodiment described below has a configuration that can be suitably used even with the fixed band 45 having a small adjustment amount. FIG. 11 is a front view showing a water blocking wall device according to a fourth embodiment of the present invention. In this embodiment, the support arm 44 is provided so that its position can be adjusted in the width direction with respect to the upper frame member 16 of the outer frame body 14. Specifically, the shaft support portion 47 is mounted on the upper frame member 16 so as to be movable (slidable) in the width direction, and is configured so that the position in the width direction can be adjusted and positioned in a plurality of steps or steplessly. Has been. The shaft support 47 can be positioned by, for example, detachably attaching a lock pin 66 that can be inserted into and removed from the upper frame member 16 and the shaft support 47. When the position of the shaft support portion 47 is adjusted, the heights of the first and second band receiving portions 49 and 50 at the tip of the support arm 44 change, and the first and second band receiving portions 49 in which the fixed band 45 is disposed. , 50 is adjusted.

  Therefore, when the elastic deformation of the seal member 11 is large and the water blocking wall 6 is lowered further downward, the shaft support shaft portion 47 is disposed on the outer side in the width direction, and the first and second ends of the support arm 44 at the tip end thereof. The band receiving portions 49 and 50 are arranged at a higher position, and the distance between the first and second band receiving portions 49 and 50 is shortened. Thus, even if the adjustment amount of the fixed band 45 is small, it can be used.

  FIG. 12 is a schematic perspective view showing a water blocking wall of a water blocking wall device according to a fifth embodiment of the present invention, and FIG. 13 is a schematic plan view and a side sectional view of the water blocking wall. It is. In these drawings, the seal member 11, the support leg 27, the fixing means 10, and the like are omitted. The water blocking wall 6 of the present embodiment is configured such that the water blocking plate 13 can be easily attached to and detached from the outer frame body 14. A pair of front and rear fitting plates 67 projecting radially inward are provided on the inner peripheral surface of the lower frame member 17 of the outer frame body 14, and the outer periphery of the water stop plate 13 is interposed between the pair of fitting plates 67. An insertion groove 68 for inserting the portion is formed. The water stop plate 13 is attached to the outer frame 14 by inserting the water stop plate 13 into the insertion groove 68 from above.

In this embodiment, when installing the water blocking wall device 1 in the pipe rod 2, the water blocking plate 13 is removed from the outer frame body 14, and the water is stopped in a state that is not easily affected by the water flow in the pipe wall 2. The outer peripheral surface of the wall 6 is brought into contact with the inner peripheral surface 2a of the pipe rod 2. Then, after the water blocking wall 6 is fixed by the fixing means 10, the water blocking plate 13 is inserted into the insertion groove 68, whereby the water blocking wall 6 can be installed easily.
In the example shown in FIGS. 12 and 13, the support leg 27 is omitted, but the support leg 27 shown in the first and second embodiments is detachably attached to or integrated with the outer frame body 14 or the like. do it.

  The present invention is not limited to the above-described embodiments, and the design can be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Water stop wall apparatus 2 Pipe 6 Water stop wall 7 Water inlet 10 Fixing means 13 Water stop plate 18 Bar material 27 Support leg 44 Support arm 45 Fixed band 68 Insertion groove

Claims (12)

A water blocking wall having an outer peripheral surface that is formed in a size capable of blocking the water flow flowing through the lower portion of the pipe having a circular cross section and that can be pressure-tightly crimped to the inner peripheral surface of the pipe;
A water passage through the water blocking wall in the front and back direction;
A fixing means for pressing and fixing the water blocking wall to the inner peripheral surface of the pipe rod;
And a supporting leg for supporting the water blocking wall from one or both of the front and back directions.   The water barrier device for a pipe rod according to claim 1, wherein the support legs are provided on both sides in the width direction across a center line in the width direction of the tube rod.   The water blocking wall device for a pipe rod according to claim 1 or 2, wherein the support legs are provided on both sides of the water blocking wall in the front and back direction.   The water blocking wall device for a pipe rod according to any one of claims 1 to 3, wherein the support leg is detachably provided to the water blocking wall.   The fixing means extends upward from both sides in the width direction of the upper edge of the water blocking wall, and a pair of support arms whose upper ends are arranged in the vicinity of the inner peripheral surface of the pipe rod, and a pair of the support arms An elastically deformable fixing band disposed between the upper end portions along the inner peripheral surface of the tube rod and having both longitudinal ends supported by the upper end portions of the pair of support arms. Item 5. A water barrier device for a pipe rod according to any one of Items 1 to 4.   The pair of support arms are provided so that the posture can be changed between a storage posture along the upper edge of the water blocking wall and a support posture that swings upward from the storage posture to support the fixed band. The water barrier device for a pipe rod according to claim 5.   7. The water blocking wall device for a pipe rod according to claim 6, wherein the pair of support arms are provided so as to be positionally adjustable in a width direction with respect to an upper edge portion of the water blocking wall.   The water blocking wall device for a pipe rod according to any one of claims 1 to 7, wherein an upper edge portion of the water blocking wall is configured by a bar material extending in a width direction with a thickness that can be gripped by an operator.   The water barrier device for a pipe wall according to any one of claims 1 to 8, wherein the water blocking wall includes a transparent water blocking plate that blocks a water flow in the pipe wall. The water stop wall includes a water stop plate that blocks the water flow in the pipe and an outer frame that supports the outer periphery of the water stop plate;
The water stop wall device for a pipe rod according to any one of claims 1 to 9, wherein the outer frame body includes an insertion groove in which the water stop plate can be removably inserted in a direction perpendicular to the front and back direction.   The tubular rod according to any one of claims 1 to 10, wherein a cylindrical sealing member that is elastically deformable by being crimped to an inner circumferential surface of the tubular rod is provided on the outer circumferential surface of the water blocking wall. Water barrier device.   The pipe rod according to any one of claims 1 to 10, wherein a seal member having a lip portion that can be elastically deformed by being crimped to an inner peripheral surface of the pipe rod is provided on an outer peripheral surface of the water blocking wall. Water barrier device.

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