JP2006274795A - Water channel structural member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water channel structural member enabling easy setting of gradient, easy adjustment of the set gradient, and reduction in the amount of a filler. <P>SOLUTION: This water channel structural member 1 comprises a gutter-like invert part 2 upwardly opened and allowing sewage to flow therein, forms a novel water channel in a pipeline P buried in the ground, and comprises, as a support part, a plurality of extensible leg parts 10 having lower parts in contact with the inner surface of the pipeline. The leg part 10 is formed of a center shaft part 12 on the inner periphery and a fixed pipe part 11 on the outer periphery, a hexagon hole 13 is formed at the upper end of the center shaft part, and the vertical position of the water channel structural member can be adjusted by inserting a hexagon socket head spanner S from the upper side therein and rotating the center shaft part. The leg part 10 is so formed that the hexagon hole 13 is exposed upward as an adjustment part for adjusting the vertical position thereof at a position where the leg part can be adjusted after installation, and the center shaft part is rotated from the upper side to adjust the vertical position of the water channel structural member. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a waterway component that constitutes a new waterway in a pipeline such as a newly installed sewer pipe or an old sewage pipe, and in particular, a predetermined gradient can be easily added. The present invention relates to a waterway component that can be easily adjusted.

  Conventionally, for example, the waterway constituent member described in Patent Document 1 used in this type of waterway construction method has a cross section formed in a bowl shape, and extends radially in the opening end face and the axial end face along the axis thereof. The protruding protrusion is formed integrally, the fastening member insertion hole is provided in the protruding edge of the axial end surface, and the anchor member attaching portions are provided on both side surfaces including the protruding edge of the bowl-shaped main body.

  The water channel component of the above structure has no distortion of the molded body and no wavy deformation of the cross section, etc., so when the water channel is provided, there is no need for the anti-lifting control tree conventionally required when placing the mortar. Since the upper space in the pipeline is completely empty at the time of construction, fixing work is very easy, and after mortar placement, all anchor members and spacer members are embedded in the mortar, and removal work is unnecessary. As a result, post-processing is not required and the construction can be simplified.

Japanese Patent No. 2704976 (paragraph [0007], FIGS. 1 and 2)

  The waterway component having the above-described structure has various effects as described above. However, fixing the waterway component to the pipe by the anchor member has to be performed manually by a person entering the pipe. It was. In addition, since the anchor member is fixed with an anchor bolt, a turnbuckle or the like, the fixing work becomes complicated, and it is necessary to fix about four places to one water channel component member, and a large number of water channel component members are connected and fixed. In that case, the work time was extremely long. In addition, the time for injecting the filler between the water channel constituent member and the pipe has also been a cause of extending the working time.

  The present invention has been made in view of such problems, and the object of the present invention is to provide a novel water channel by connecting a short water channel component to an existing pipe line whose gradient is no longer constant, for example. It is intended to provide a waterway component that can easily set the gradient in a short working time and can easily adjust the gradient once set. An object of the present invention is to provide a waterway component that can also form a new waterway in the road. More specifically, an object of the present invention is to provide a water channel constituent member that can reduce the amount of filling material and the filling time injected between the water channel constituent member and the pipe. It is another object of the present invention to provide a waterway component that can secure the flow rate of sewage and prevent sewage from staying even in that case. It is another object of the present invention to provide a waterway construction method capable of easily constructing a new waterway with a desired gradient in existing or new pipes using the waterway constituting member.

  In order to achieve the above-mentioned object, the waterway component according to the present invention is provided with a bowl-shaped invert portion that opens upward and flows sewage and the like, and a waterway structure that forms a new waterway in a pipeline buried in the ground The water channel constituent member includes a joint flange portion for joining with an adjacent water channel constituent member at both ends in the water channel direction, and the joint flange portion at one end or both ends of the water channel constituent member in the water channel direction. And the hook member which can latch the joint flange part of an adjacent waterway component is characterized by the above-mentioned. The hook member is formed, for example, in a U shape whose cross section is open upward. The hook member is fixed in advance in a state where it is hooked on the joint flange portion, and the joint flange portion of the adjacent waterway component member is dropped into the hook member and locked, and a bolt is attached to the connecting hole between both joint flange portions in the same manner as described above. Can be inserted and tightened with nuts. As for the water channel component, it is possible to alternately connect a member provided with a hook member and a member not provided with a hook member at both joint flange portions at both ends, or a water channel configuration provided with a hook member at one end thereof. The members can also be connected sequentially.

  The waterway component according to the present invention is a waterway component that includes a bowl-shaped invert portion that opens upward and flows sewage and the like, and that forms a new waterway in a pipe buried in the ground. The component member includes at least one support portion that is fixed to the back surface of the one side and the other side abuts against the inner surface of the pipe, and the support portion is configured to form a water channel by changing a distance between the one side and the other side. It is possible to adjust the vertical position of the member in the pipe line, adjust the length of the support part, and bring the lower end of the support part into contact with the inner wall of the pipe line so that the water channel component member can be inserted into the pipe line It is characterized by that. The leg portions are preferably fixed at, for example, four locations on the outer periphery of the waterway component, or a plurality of locations on the outer periphery of the invert portion. For example, the leg portions may be located only at the bottom center or one end of the invert portion. In some cases, when connecting a plurality of waterway constituent members, the overall height and gradient can be adjusted by adjusting the respective support portions.

  The waterway constituent member of the present invention configured as described above is configured such that a short waterway constituent member is inserted into a pipe line from a manhole, and the connecting flange portion for connection formed at the longitudinal end of the waterway constituent member is, for example, By connecting the bolts and nuts and adjusting the length of the support portion that contacts the inner wall of the pipe, the gradient applied to the waterway constituent member can be easily adjusted. In this way, since the support portion can be expanded and contracted to change the vertical position relative to the pipeline and the gradient can be adjusted freely and continuously, for example, after the gradient is adjusted once and the waterway component is installed in the pipeline, the entire installation It is also easy to change the gradient according to the situation.

  Further, in the waterway constituent member of the present invention, the opening shape of the fracture surface perpendicular to the waterway direction of the invert part is such that the maximum horizontal length is at least twice the deepest vertical length. Features. Here, the opening shape described above may be any shape that satisfies the relationship between the lengths in the horizontal direction and the vertical direction described above, such as a smooth curved shape, a polygonal shape, and a horizontally long substantially rectangular shape. Here, the “shape consisting of a smooth curve” may be an arc composed of one curvature radius, or may be a shape obtained by continuing arcs composed of a plurality of curvature radii.

  As for the opening shape of the invert part of the conventional waterway component, the thing of substantially semicircular arc shape was common. When a new water channel is constructed in the pipeline, after the water channel component is installed, a filler such as mortar is injected between the water channel component and the pipeline to fix the water channel component in the pipeline. . In this case, the upper surface of the filler is leveled so as to be an inclined surface having a predetermined gradient from the upper end of the invert portion. By making the opening shape of the invert part into the opening shape shallower than the semicircular arc shape, the amount of filling material and filling time can be reduced, and the extension of the new water channel is reduced. The effect is increased. In addition, this water channel structure member can be set as the structure provided with the support part mentioned above.

  Further, the waterway constituent member of the present invention includes an inclined portion that continues outward from the upper end of the invert portion, and a rising portion that extends upward from the outer peripheral end of the inclined portion. Each is provided with at least one or more.

  In this way, by providing the inclined part and the rising part on the outside from the left and right upper ends of the invert part, the amount of the filler injected between the water channel constituent member and the pipe line as in the above is compared with the conventional one. Can be reduced. In addition, when the filler is injected between the waterway constituent member and the pipe by providing the inclined portion, air can escape along the inclined portion slope, so that the air does not enter the filler and the filling is satisfactory. Can do. And since the apparatus (for example, trolley | bogie) which moves a person and an object can drive | work an inclination part and a start-up part after waterway construction, it can be utilized also for pipe maintenance management. In addition, sewage or the like generally flows into the pipe from an attachment pipe attached near the upper part of the existing pipe. For example, in the case of a pipe having a large pipe diameter, the sewage or the like And the pipeline may be partially damaged during inflow. By providing an inclined portion made of a wear-resistant material such as a resin resistant to wear, the above damage can be minimized. The number of the inclined portions and the rising portions may be single or plural on the left and right sides of the invert portion, and can be set to an appropriate number that can reduce the amount of the filler as much as possible.

  The number of the inclined portions and the rising portions is a combination of different numbers such as two inclined portions and one rising portion in addition to the same number (for example, two) provided on each of the left and right sides of the invert portion. May be. In this case, the inclined portion is provided outside the left and right upper ends of the invert portion, the rising portion is provided upward from the outer peripheral end of the inclined portion, and the inclined portion is provided outward from the upper end of the rising portion. As will be described later, a filler such as mortar is injected between the outer peripheral end of the inclined portion located at the uppermost portion and the inner surface of the pipe line. The upper surface of this filler is piped while being leveled at the same angle as the inclined portion. Can be rubbed on the road surface. In the case of such a configuration, for example, by adjusting the member width in the inclination direction of the inclined portion located at the uppermost portion, the surface of the filler is more uniform than when the same number of inclined portions and rising portions are provided. The area can be reduced, and the burden of leveling work can be reduced. In addition, this water channel component can also be set as the structure provided with the support part mentioned above.

  By the way, when the invert part has the cross-sectional shape described above, there is a problem that the cross-sectional area of the invert part decreases, but rainwater and sewage are also present in the cross section sandwiched between the right and left inclined parts and the rising part. It is possible to flow, and therefore the problem that the cross-sectional area of water flow is reduced hardly occurs.

  Moreover, the water channel component of the present invention is provided with a joint flange portion for joining with an adjacent water channel component member at both ends in the water channel direction, and the joint flange portion is a member in the vertical direction near the bottom center of the invert part. The width is the smallest compared with the other part of the joining flange part. Here, “near the bottom center of the invert part” is a range that affects the top surface height of the invert part when the waterway constituent member is installed in the pipe in the joint flange part. If the opening shape is a shape consisting of a smooth curve with a constant radius of curvature, the central angle is a portion in the range of about 90 degrees (although this range may be arbitrary, A range much narrower than 90 degrees may be set).

  For the waterway component, the one in which the length in the waterway direction is molded to an arbitrary length of about 0.5 to 1 m, for example, is used, but the joining flange portions provided in both adjacent waterway components are brought into contact with each other. By aligning the connecting holes drilled in the joint flange portion, inserting bolts and tightening the nuts to connect the water channel components together, the water channel components can be easily extended.

  When connecting the waterway constituent members as described above, the lowest point when a predetermined gradient is set is the width in the vertical direction of the joint flange near the center of the bottom of the inverted part of the waterway constituent member at the lowest point. It is prescribed by. By keeping the lowest point as low as possible, the height of the highest point can be lowered. If the height of the top point can be made as low as possible, the degree of freedom in setting the gradient when the water channel is further extended increases. However, as described above, the joint flange portion needs to have a predetermined strength by providing a connection hole for connecting adjacent water channel constituent members. In the present invention, the connecting flange portion is provided in a portion other than the vicinity of the center portion of the invert portion bottom, and the vertical width thereof is set larger than the vicinity of the center portion of the invert portion bottom, thereby satisfying the above-described requirement. Can do. Therefore, the width in the vertical direction near the center of the bottom of the invert part can be made very small. In addition, this water channel structure member can be set as the structure provided with the support part mentioned above.

  In addition, the water channel constituent member of the present invention includes at least one fixing member that connects the inner surface of the pipe and fixes the water channel constituent member in the pipe. The fixing member is, for example, an elongated plate or a combination of two elongated plates with bolts. Bolt holes are drilled at both ends of the elongate plate, and both ends of the elongate plate are bolted to an angle member fixed to the back surface of the invert portion and an angle member fixed to the inner surface of the duct with an anchor bolt. Thus, the water channel constituent member can be fixed in the pipeline. In this way, by fixing the water channel component member in the pipeline, the right and left positioning of the water channel component member in the pipeline can be performed easily and reliably, and the water channel component member can be lifted when placing mortar or the like. Can be prevented. In addition, this water channel component can also adjust the up-and-down position as a structure provided with the above-mentioned support part.

  Moreover, as a preferable specific aspect of the waterway constituent member according to the present invention, the support part has an adjustment part that adjusts the vertical position at an adjustable position after installation, and the adjustment part is adjusted. The distance of the support part can be changed. When the adjustment unit is exposed at the top, adjustment is possible from above, and when it is exposed at the side, adjustment from the side is possible. According to this configuration, since the length of the support portion can be changed by extending and contracting from the upper part of the water channel constituent member, the support portion can be easily extended and contracted even after the water channel constituent member is inserted into the pipe. The slope can be adjusted. Also, when the inner diameter of the pipeline is small, a device for setting the gradient along the waterway constituent members is inserted into the pipeline, and the vertical position is adjusted using the adjustment unit, so that a person can enter the pipeline. It is possible to set the gradient without entering.

  Furthermore, as another preferable specific aspect of the waterway constituent member according to the present invention, the support portion includes an elastic body that repels the other side with respect to the one side, and is against the elastic body. A fixing means for locking the water channel constituent member at a lowered position is provided. As the elastic body, a leaf spring or a compression coil spring is suitable. According to this configuration, after the water channel constituent member is installed in the pipe line with the elastic body of the support portion extended, when the water channel constituent member is pressed from above, the elastic body is compressed and one side of the support portion and the other The distance between the sides can be changed, and the vertical position of the waterway constituent member can be easily changed because it is locked at the lowered position.

  Further, the support portion is characterized in that a spherical surface is formed at an end portion where the other side comes into contact with the inner surface of the pipe line. It is preferable to connect and fix the sphere to the lower end of the screw that is extendable in the vertical direction. According to this configuration, since the support portion forms a spherical surface at the end portion, the spherical surface and the inner surface of the pipe line are in point contact, and the vertical position can be continuously adjusted, and the water channel component member is inserted into the pipe line. Since the resistance at the time is small, it can be easily inserted, and the water channel constituent member can be brought into contact with the pipe line in a stable state even if the support part is expanded and contracted regardless of the inner diameter of the pipe line.

  Further, the waterway construction method according to the present invention is a waterway construction method in which a new waterway is constructed in a pipe buried in the ground using the waterway constituting member described above, and the other side of the support portion is piped. A step of contacting and installing a waterway constituent member in the pipe in contact with a road wall; and inserting a gradient setting device into the pipe along the connected waterway constituent member; A step of changing the distance to give a desired gradient to the waterway constituent member, a step of fixing the waterway constituent member to the pipe, and a step of injecting a filler between the waterway constituent member and the pipe It is characterized by that.

  According to the waterway construction method constructed in this way, first, after connecting and installing a waterway constituent member in a pipeline, for example, in a state close to the horizontal, the gradient setting device is placed in the pipe using this waterway constituent member as a guide. Insert and adjust the distance of multiple support parts of each waterway component member to set the vertical position, and adjust the vertical position of all waterway component members to add a gradient, so the predetermined gradient can be accurately Moreover, it can attach efficiently and can fix all the water channel components to a pipe line after that. Furthermore, it is possible to easily reset the gradient once set.

  And after fixing the said water channel component to a pipe line, since it has the process of injecting fillers, such as mortar, between a water channel component and a pipe, it is directed to the invert part of a water channel component on the upper surface of a filler. An inclined surface that becomes lower can be formed. For this reason, it is possible to firmly fix the water channel constituent member in the pipeline, to reinforce the pipeline itself, to secure a large flow rate when guiding sewage or the like to the invert portion, and to prevent retention Can do.

  As can be understood from the above description, the waterway constituent member of the present invention can easily form a new waterway in the existing pipe. Further, even if the level of the existing pipe is not measured in advance, an arbitrary gradient can be given after the waterway constituent member is carried in and installed in the pipe, so that the work period can be shortened by improving work efficiency. In addition, once the waterway constituent members are connected and installed in the pipe, the set gradient can be easily changed once. Furthermore, the amount of filler such as mortar and the filling time can be significantly reduced as compared with the conventional case.

  Hereinafter, an embodiment of a waterway constituent member concerning the present invention is described in detail based on a drawing. FIG. 1 is a front view of a waterway component according to the present embodiment, a cross-sectional view of a state in which the height is changed, FIG. 2 is a plan view and a side view of the waterway component of FIG. 1, and FIG. , 2 is a perspective view of the water channel constituent member shown in FIG. 2, and FIG. 4 is a cross-sectional view of a main part of a leg portion (support portion) of the water channel constituent member shown in FIGS.

  1-4, the water channel component 1 has a shape in which an inclined surface is continuously formed at the upper end of a half pipe that basically divides a cylinder along the axial direction. Is provided with a bowl-shaped invert portion 2 constituting a water channel through which the water flows. For example, the invert section 2 is formed in a substantially semicircular arc shape with a radius of about 100 to 150 mm, and has a bowl shape with a length of about 0.5 to 1 m. Joining flange portions 3 and 3 extending at a right angle toward the outside are formed at both ends of the waterway constituent member 1 in the waterway direction, and a plurality of connecting holes 4 are formed at predetermined intervals. In this embodiment, the length of the water channel constituent member 1 in the direction of the water channel through which the sewage and the like flow is formed to be about 50 cm. However, the length is not limited to this length, and any length can be set according to the size of the manhole that can be inserted. Can be set to length. The waterway constituent member 1 extends the invert part 2 by bringing the joint flange part 3 into contact with the joint flange part 3 of another waterway constituent member 1 and inserting a bolt into the connecting hole 4 and tightening with a nut, for example. Can be linked to.

  As shown in FIG. 1 a, the water channel component 1 has a predetermined gradient α from the upper end of the invert part 2, and is provided with inclined parts 5 and 5 that continue upward ascending toward the outside. The ends are extended upward to form rising portions 6 and 6. The gradient α of the inclined portions 5 and 5 is preferably about 20%, and the rising portions 6 and 6 extend in the vertical direction. The rising portion 6 continuing from the inclined portion 5 is suitable for moving a gradient setting device described later along the water channel constituent member 1. In the waterway component 1, the invert portion 2, the joint flange portion 3, the inclined portion 5 and the rising portion 6 are integrally formed of, for example, fiber reinforced plastic (FRP). In addition, it is not restricted to FRP, and may be formed from an unreinforced normal plastic molded product, metal casting, sheet metal processed product, pottery, ceramics, etc., and for reinforcement, for example, an invert portion 2 and an inclined portion You may make it embed an angle material etc. in the corner part with the parts 5 and 5. FIG.

  For example, when the water channel constituent member 1 is installed in an existing pipe-shaped pipe P, it serves as a support portion for supporting the water channel constituent member 1 and is at least one or more telescopically contacting the inner surface of the pipe P with its lower end. It is characterized by providing the leg part 10 .... That is, four attachment plate portions 7 are fixed to the lower surfaces of the inclined portions 5 and 5 in the vicinity of the joint flange portions 3 and 3, and the attachment plate portion 7 is bent in the horizontal direction at the intermediate portion. A leg portion 10 is fixed in a vertical direction to an extending end portion of the plate portion 7 in the horizontal direction. For this reason, each of the four leg portions 10 can extend and contract in the vertical direction in a parallel state, and is configured to support the water channel component 1 at four points. The reason why the mounting plate portion 7 is separated from the joint flange portion 3 is to facilitate the connection with the bolt and nut when the water channel component 1 is connected.

  The leg portion 10 is formed in a double structure from the outer peripheral fixed pipe portion 11 and the inner peripheral central shaft portion 12, and the outer peripheral thread portion of the central shaft portion 12 is screwed into the inner peripheral thread portion of the fixed pipe portion 11. ing. The outer periphery of the fixed pipe portion 11 is a hexagonal column, and is screwed to the mounting plate portion 7 with a screw portion 11a (see FIG. 4) whose upper end is reduced in diameter. The central shaft portion 12 on the inner periphery is formed with a screw on the outer periphery over the entire length of the shaft, a hexagonal hole 13 into which the hexagonal bar spanner S can be fitted is formed on the upper end, a screw hole is formed on the lower end, and the sphere 14 is screwed. Has been. Accordingly, by rotating the hexagon socket wrench S fitted into the hexagon hole 13, the central shaft portion 12 moves up and down with respect to the fixed pipe portion 11, and its vertical length D (see FIGS. 1 and 3), That is, the distance between one side of the fixed side and the other side of the contact side can be continuously changed from D to D1. The leg portion 10 of the present embodiment has a double structure of a fixed pipe portion 11 and a central shaft portion 12 having the same length, and the contracted state can be made relatively small, from the contracted state to the maximum extended state. There is an advantage that a large adjustment range can be taken.

  Further, a spherical body 14 is fixed to the lower end of the leg portion 10, and a spherical surface is formed at the end portion of the leg portion on the side in contact with the inner surface of the pipe line, and the leg part 10 abuts on the inner wall of the pipe line P with this spherical surface. It is configured as follows. Thus, since the spherical surface is in point contact with the inner wall surface of the pipe P, when the central shaft portion 12 of the leg portion 10 is continuously rotated, the water channel constituent member 1 can be moved up and down continuously. It is possible to prevent the water channel constituent member 1 from rapidly rising or lowering during the up and down movement. And since the spherical body 14 of the leg part 10 and the pipe line P wall surface are point contacts, insertion of the water channel component 1 in the pipe line P can be easily performed with low resistance. The lower end of the central shaft portion 12 may be formed in a spherical shape without fixing the sphere to the lower end of the leg portion 10.

  The upper end of the leg portion 10 is exposed from the upper surface of the water channel component 1 as a position that can be adjusted after installation, and the hexagonal hole 13 that is an adjustment unit for adjusting the vertical position of the water channel component member is exposed. Adjustment operation is possible. For this reason, the center axis | shaft part 12 can be rotated by inserting the hexagon stick spanner S from the upper direction in the hexagon hole 13. FIG. When the central shaft portion 12 is rotated to the right and lowered, for example, the hexagonal hole 13 moves deep inside the fixed pipe portion 11, the hexagonal bar spanner S needs a length larger than the length of the fixed pipe portion 11. .

  The above-described leg portion 10 has a double structure of the outer peripheral fixed pipe portion 11 and the central shaft portion 12, but can also have a triple structure as shown in FIG. That is, in FIG. 5, the leg portion 10A has a triple structure including an intermediate pipe portion 11B between the outer peripheral fixed pipe portion 11A and the central shaft portion 12A, and the fixed pipe portion 11A is attached to the mounting plate by the upper end external screw 11a. An inner screw 11b which is fixed to the portion 7 and has a reduced diameter is formed at the lower end. The intermediate pipe portion 11B has a reduced diameter at the lower end, an outer thread 11c that engages with the inner screw 11b of the fixed pipe portion is formed on the outer periphery excluding the upper end, and an inner screw 11d is formed at the reduced diameter portion at the lower end. Yes. The central shaft portion 12A is formed with an outer screw 12a that is screwed with an inner screw 11d at the lower end of the intermediate pipe portion 11B on the outer periphery excluding the upper end, and a sphere 14 is screwed to the lower end. A hexagonal hole 13 into which the hexagonal bar spanner S can be fitted is formed on the upper surface of the central shaft portion 12A. The leg portion 10A has an advantage that the adjustment width of the distance between one side of the fixed side and the other side of the contact side is larger than that of the leg portion 10 shown in FIG. However, the adjustment range can be further increased by employing a quadruple structure.

  The operation of the waterway construction method using the waterway construction member of the present embodiment constructed as described above will be described below with reference to FIGS. 6A and 6B are cross-sectional views in a direction orthogonal to the longitudinal direction of the pipe P showing the construction method of the water channel constituent member, where FIG. 6A is during construction, FIG. 7B is after construction, and FIG. It is sectional drawing of the longitudinal direction of the pipe line P which shows these.

  In this embodiment, the pipe P is a reinforced concrete fume pipe having an inner diameter of about 600 mm, and the pipe P is a junction pipe through which dirty water and rainwater flow. The pipe P has been aged for a long time since it was buried in the ground, and there is a part where a predetermined gradient is not obtained due to unequal subsidence, etc., as shown by a two-dot chain line in FIG. When rainwater flows and the flow rate is high, sewage flows at the same time. However, when only sewage is used, a new water channel is required in a state that it is difficult to flow and stays. The pipe P is not limited to a pipe having an annular cross section, and may be a horseshoe or rectangular pipe.

  When the above-described waterway constituent member 1 is installed in the pipe P to form a new waterway, first, each member 1 having a length of about 0.5 to 1 m is carried into the sewer pipe from the manhole. And the length of the four leg parts 10 which can be expanded-contracted is adjusted, and the spherical body 14 of a lower end is contact | abutted to the inner wall of the pipe line P. FIG. The adjustment of the leg 10 may be performed by setting the gradient of the water channel formed in the pipeline P to be repaired in advance and adjusting the gradient according to the gradient. The gradient may be adjusted.

  In this way, the water channel constituent members 1 whose lengths of the leg portions 10 are appropriately adjusted are sequentially inserted into the pipe P, the joining flange portions 3 and 3 are brought into contact with each other, and are tightened with bolts and nuts 8 to be connected. . By repeating this operation, for example, the water channel constituent member 1 is connected in the pipe P of the sewage pipe to the next manhole, and a new water channel is configured in the existing pipe P in a state close to a horizontal state. Even if the leg portion 10 is adjusted so as to have a predetermined slope according to the slope of the pipe line P measured in advance, if the slope is not preferable and a recess or the like is generated after installation, the center shaft portion 12 of the leg portion 10 The hexagonal bar wrench S is fitted in the hexagonal hole 13 and rotated to adjust the length of the leg 10 so that the gradient can be brought into a preferable state.

  The telescopic leg 10 may be inserted into the pipe P after being set to a predetermined length so as to give a predetermined gradient to the existing pipe P that has been measured in advance. After insertion into P, the length of each leg 10 may be adjusted to give a desired gradient. When the slope is adjusted after being inserted into the pipe P, when the inside diameter of the pipe P is large and a person enters, the slope can be easily adjusted by rotating the central shaft portion 12 of the leg portion 10 with the hexagonal bar spanner S to expand and contract. Can be set. When the inner diameter of the pipe P is small and a person cannot enter, the gradient setting device 30 is inserted along the water channel constituting member, and the length of the leg portion 10 is adjusted.

  Although not shown in detail, the gradient setting device 30 includes a roller 31 that moves along the inclined portions 5 and 5 of the water channel component 1 and is configured to move manually or automatically to adjust the gradient. At the position of the leg portion 10, there is provided an adjusting portion from which a hexagonal bar 32 corresponding to a hexagonal bar spanner rotated by a motor or the like is projected. Since the hexagonal bar 32 moves up and down when the central shaft portion 12 is rotated, the hexagonal rod 32 has a configuration that can move up and down in the axial direction in accordance with the central shaft portion. Moreover, although not shown, the gradient setting device 30 includes a guide piece or a guide roller that engages with the rising portion 6, and can accurately move along a formed water channel. When the gradient setting device 30 is moved manually, for example, the rope can be moved by fixing one end of the rope to the device and pulling the other end from one manhole.

  Then, for example, the position of the leg 10 of the waterway component 1 is confirmed by a television camera, the hexagonal bar 32 is inserted into the hexagonal hole 13, the motor is rotated forward and backward to rotate the hexagonal bar 32, and the length of the leg 10 is increased. By adjusting the length (distance between one side and the other side) D, the water channel component 1 is moved up and down to set the gradient. In addition, when there are four leg portions 10 in one water channel constituent member 1, the gradient setting device 30 is provided with an adjustment portion including four hexagonal bars 32, and the gradient is made by adjusting four locations at a time. Is preferred. The positioning of the leg 10 and the hexagonal bar 32 is achieved by capturing the image of the leg 10 with a television camera or the like and moving the gradient setting device 30 using the image recognition device, so that the gradient setting of the waterway constituent members can be performed in a short time. It can be done efficiently.

  In this way, after the water channel component 1 is connected and installed in the pipeline P to form a new water channel, the water channel component 1 is fixed in the pipeline P. This fixing is basically performed by filling and fixing a filling material such as mortar M between the water channel component 1 and the pipe P. That is, the mortar M is injected into the gap in a state in which the water channel component 1 is pressed downward so as not to rise. The injection of the mortar M is performed, for example, in two steps. The first time, the mortar M1 is injected so that the sphere 14 at the lower end of the leg 10 is at least filled with the water channel component 1 pressed, and the first mortar M1 is injected. Since the water channel constituent member 1 does not move after curing, the second mortar M2 can be injected without pressing. Note that the first injection of the mortar M can be performed without pressing the water channel component 1. After the second mortar injection, the upper surface of the mortar is leveled to the inclined surface Ma (see FIG. 6b) at the same angle as the inclined portion 5 of the water channel component 1.

  In this way, when a large number of waterway constituent members 1 are connected and installed in the existing pipe P to form a new waterway, the invert portion 2 through which sewage or the like of the waterway constituent member 1 flows has a reduced radius and a cross-sectional area. In combination with the fact that the gradient is optimized, the flow rate of sewage and the like can be ensured, so that sewage and the like can be prevented from staying and odor generation can be prevented. In addition, when there is a lot of rainfall and the amount of water flowing in the pipeline is large, the sewage etc. flows using both the invert part 2 and the inclined parts 5 and 5 on the outside thereof. The flow rate can be secured by using the inclined surface Ma.

  In the above-described embodiment, the water channel constituent member 1 includes the four leg portions 10 as support portions, but it is sufficient that at least one support portion is provided. The water channel constituent member 1A shown in FIG. 8a includes two leg portions 10 and 10 on one side of the water channel constituent member as a support portion. The waterway constituent member 1A having this configuration is connected and installed as shown in FIG. 8b when connected by the joining flange parts 3 and 3, and the leg parts 10 and 10 provided in each of the waterway constituent members are adjusted. By doing this, the overall gradient can be set. Moreover, as shown in FIG. 8 c, the water channel component 1 having four legs 10 and the water channel component 1 </ b> B having no legs are alternately connected, and the legs of every other water channel component 1. By adjusting 10, it can be installed so that the overall gradient can be set. In addition, although not shown in figure, it is also possible to connect the edge part which is not equipped with the leg part of 1 A of water channel structure members, and to use it as a water channel structure member of double length which has a leg part at both ends. Further, the water channel component 1A having a leg on one side and the water channel component 1B having no leg may be alternately connected.

  Next, another embodiment of the waterway constituting member according to the present invention will be described in detail with reference to FIGS. FIG. 9 is a perspective view of another embodiment of the waterway component according to the present invention, and FIG. 10 is a cross-sectional view showing the steps of the construction method of the waterway component of FIG. Note that this embodiment is different from the above-described embodiment in that the leg portion 15 constituting the support portion of the water channel component member is formed by all bolts 16 having threads formed over the entire long length. By rotating all the bolts 16 using the double nut 17 at the upper end, the vertical position of the water channel constituent member in the pipeline can be adjusted. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

  9 and 10, the water channel component 1 </ b> C has inclined portions 5, 5 and rising portions 6, 6 extending from the upper end of the semi-cylindrical invert portion 2, and joining flange portions 3, 3 orthogonal to these are formed. Is formed. And the metal plate material 7A which serves also as a reinforcement part is adhering to 1 C of water channel components so that the invert part 2 and the back surface of the inclination parts 5 and 5 may be contact | connected. The metal plate member 7A includes an arc portion and attachment portions extending outward from both end portions of the upper end thereof, and left and right end portions of the attachment portion are exposed to the outside from the inclined portions 5 and 5. A nut is fixed to the mounting portion of the exposed portion, and all the bolts 16 are screwed to the nut as the leg portions 15, and an adjusting portion of the double nut 17 is fixed to the head of the all bolts. By rotating the double nut 17, all the bolts 16 are moved in the vertical direction, and the vertical position of the water channel component 1 </ b> C can be adjusted by changing the lower length (distance) D from the mounting portion. In addition, you may fix the attachment board part similar to the said embodiment by adhesion | attachment etc., without using 7A of metal plate materials. Further, instead of the double nut, one nut may be welded and fixed. This leg portion 15 can also be adjusted from above.

  When adjusting the leg 15 to adjust the vertical position of the water channel component 1C in the pipe P, the spanner is engaged with the double nut 17 at the upper end of all the bolts 16 and rotated. By this operation, all bolts 16 are moved in the axial direction, the position of the sphere 14 at the lower end is changed to the distance D2, and the sphere 14 is in contact with the inner surface of the pipe P, so that the water channel component 1C can be moved up and down ( 10a-b). The four bolts 16 of one water channel constituent member 1C are adjusted to set the gradient and position, and the other water channel constituent members 1A connected to this water channel constituent member 1C are adjusted in order to be connected. A new channel gradient can be set. When the setting of the gradients of all the waterway constituent members 1C is completed, when all the bolts 16 protrude from each waterway constituent member, the protruding portion is cut (FIG. 10c).

  Also in this embodiment, after setting the length of the leg portion 15 of each water channel constituent member 1C and then connecting it by inserting it into the pipe P, after connecting in a state close to the horizontal, the gradient setting device Any of the methods for adjusting the length (distance) of the leg 15 by 30 and determining the gradient may be used. The leg 15 of this embodiment also has a double nut 17 as an adjusting part for adjusting the length exposed from above the water channel constituent member 1C, so that it can be easily adjusted by the gradient setting device 30 even when adjusting by hand. Can be done. Further, each water channel constituent member 1 </ b> C is not limited to the one having the four leg portions 15 as the support portion, and may be provided with the two leg portions 15.

  Thereafter, a filler such as mortar M is injected into the gap between the water channel constituent member 1C and the inner surface of the pipe P (FIG. 10d), and the water channel constituent member 1C is fixed to the pipe P, and an inclined surface is formed on the upper surface of the mortar M. Ma is formed so that sewage or the like easily flows into the invert part 2. When injecting a filler such as mortar M, it is preferable to press the water channel constituent member downward so that the water channel constituent member 1C does not move due to pressure or buoyancy during injection. In addition, the injection of the mortar M is divided into two times, and the first injection (M1) is performed so that the sphere 14 at the lower end of the leg portion 15 is filled with the waterway constituent member 1C being pressed and fixed. In the second injection (M2), it is preferable to inject to the upper part without pressing, but it may be filled at a time in a pressed state.

  Still another embodiment of the present invention will be described in detail with reference to FIGS. FIG. 11 shows still another embodiment of the waterway component according to the present invention, (a) is a front view with a part broken away, (b) is a sectional view of the main part of (a), and (c) is (a) ) Is a cross-sectional view taken along the line A-A in FIG. 11, (d) is a cross-sectional view taken along the line BB in FIG. In addition, the water channel constituent member 1D of this embodiment is characterized in that a support portion for supporting the water channel constituent member is different.

  11 and 12, the water channel component member 1D includes a support member 20 that functions as a support portion. The support member 20 is provided on the back surface of the invert portion 2 of the water channel component member 1D and between the joint flange portions 3 and 3. For example, two are fixed in an inclination direction of 45 degrees, and the vertical position in the pipe P of the water channel constituent member 1D is adjusted and supported. The support member 20 includes a pair of leaf springs 21 and 21, a pair of support members 22 and 22 that support both ends of the pair of leaf springs in parallel with a gap therebetween, and a pair of support members. A central shaft portion 23 penetrating through the plate spring portion in parallel with the leaf spring portion, and supporting members 22, 22 movably locked to the shaft end side with respect to the central shaft portion 23 so that movement toward the central side is impossible. And fixing the center part of one leaf spring part to the back surface of the waterway constituent member 1D with a stopper 25 in a state where the pair of leaf spring parts 21 and 21 are curved outward and inflated. The center part of the other leaf spring part is brought into contact with the inner surface of the pipe P to support the water channel constituent member 1D in the pipe P. The leaf spring portion 21 is formed so as to be bent in an unloaded state.

  A fixing screw 24 having a sharp tip is screwed into the support member 22 as a fixing means for locking the central shaft portion 23 penetrating therethrough. That is, the fixing screws 24 and 24 are screwed into the supporting members 22 and 22 on both sides so that the tips thereof are directed inward, and the supporting member 22 is directed outward (arrow 26) with respect to the central shaft portion 23. Is movable, but the tip of the fixing screw 24 is stuck in the inner direction (arrow 27) and cannot move. When the support member 20 is removed from the waterway constituent member 1D at the time of conveyance and the fixing screw 24 is loosened to make the leaf spring portion 21 flat and the fixing screw 24 is locked, the center shaft portion 23 and a pair of leaf spring portions are engaged. 21 and 21 are parallel and are not bulky.

  When the support member 20 is fixed to the water channel component 1D, the fixing screws 24 and 24 are screwed in such a state that both the leaf spring portions 21 and 21 are curved outward and the tip sharpened portion is slightly attached to the central shaft portion 23. Lock in the state of being stuck in. On the other hand, a stopper 25 for fixing the support member 20 is fixed to the back surface of the invert portion 2 of the water channel component 1D. The stopper 25 is formed in, for example, a three-pronged shape, two pieces on both sides are fixed to the back surface of the invert portion 2 by sticking or the like, and one piece at the center is lifted, and two pieces on both sides and one piece on the center The one leaf spring portion 21 of the support member 20 is sandwiched and fixed.

  In a state where the pair of leaf spring portions 21 and 21 are inflated in this way, one leaf spring portion is engaged with a central piece of the stopper 25 fixed to the back surface of the invert portion 2, and the water channel component member 1D The two support members 20 and 20 are fixed to the invert part 2 on the back surface in the direction of 45 degrees. When the stoppers 25 are pressed so that the pair of leaf springs become flat against the repulsive force of the inflated leaf springs 21, 21, the support members 22, 22 turn the central shaft part 23 outward. It moves and is locked by the fixing screws 24, 24 at the moved position, and the water channel component 1B is configured to be held at the lowered position.

  In addition, the angle which fixes a support member is not restricted to 45 degree | times, and the number to fix is not restricted to two. Further, the leaf spring portion is not limited to metal, and may be formed from, for example, an elastic resin plate. In addition, as a fixing means that the support member can move in the outer direction with respect to the central shaft portion and cannot move in the inner direction, a step in a direction perpendicular to the axial direction is formed in the central shaft portion, and the step is inclined. It is also possible to provide a ratchet mechanism by providing a spring material that is elastically contacted.

  The water channel constituent member 1D in a state where two support members 20 are fixed is inserted into the pipe line with the other side of the support member in contact with the inner surface of the pipe line P as shown in FIG. 12a. In this state, as shown in FIG. 12b, when the water channel component member 1D is pressed from above, the pair of leaf spring portions 21 and 21 of the support member 20 resists the spring force by the invert portion 2 and the inner surface of the pipe P. The support members 22 and 22 are moved to the outside with respect to the central shaft portion 23 and are locked and fixed by the fixing screws 24 and 24 at that position. As a result, the distance (distance) D between the pair of leaf springs 21 and 21 is narrowed to D3, and the vertical position of the water channel component 1D in the pipe P is changed.

  Thus, the gradient of the waterway constituent member 1D can be set only by a simple operation of pressing the waterway constituent member 1D from above. In the case of this support member 20, when the water channel component member 1D is pressed and lowered once, it is fixed at that position. Therefore, when it is desired to raise again, the fixing screws 24, 24 are loosened and the opposing support members 22, When the engagement of 22 is released, the leaf spring portions 21 and 21 swell, the interval between the support members 22 and 22 is reduced, and the water channel component member 1D can be raised.

  Thereafter, as shown in FIG. 12 d, a filler such as mortar M is injected between the water channel constituent member 1 </ b> D and the pipe, and the water channel constituent member 1 </ b> D is fixed in the pipe P. In the same manner as in the above embodiment, the mortar M is filled in two steps like M1 and M2, the support member 20 is fixed with the first mortar M1, and the whole is fixed with the second mortar M2. Although it is preferable, it may be filled at once. The water channel constituent member 1D is fixed in a state where the support member 20 is embedded in the mortars M1 and M2. In the novel water channel configured in this manner, sewage and the like flow smoothly as in the above embodiment, and the generation of odor and the like can be prevented.

  Still another embodiment of the present invention will be described in detail with reference to FIG. FIG. 13 shows still another embodiment of the waterway constituting member according to the present invention. A waterway component 1E shown in FIG. 13a basically includes a connecting bar 40 that connects the leg portions 10 and 10 of the waterway member 1 shown in FIGS. In addition, it is possible to prevent the leg from being bent when a load is applied. In this example, the connecting bar 40 is bent along the inner surface of the pipe line so that the central shaft portion 12 penetrates through the through holes at both ends, and the central shaft portion 12 can be rotated above the sphere 14 of the leg portion 10. A hex nut is positioned with a slight gap, and the sphere 14A is screwed to two intermediate positions.

  In this configuration, even when the diameter of the pipe is small, the leg portion of the water channel constituent member is prevented from being bent inward or broken, and the water channel constituent member can be installed in a stable state. Also, with this shape, it is easy to completely fix the mortar once, it is possible to set a sphere or a sled on a connecting member such as a connecting bar, and the effect of lowering the minimum height is achieved. The number of spheres in the intermediate portion is not limited to two, and may be one or more. Further, the bending angle of the connecting bar is preferably bent according to the diameter of the pipe line.

  The waterway component 1F shown in FIG. 13b is characterized by including a flat connecting bar 41. The connecting bar 41 in this example is also supported on the spheres 14 of the leg portions 10 at both ends in a state that does not prevent the rotation of the leg portions, and the diameter of the conduit P is small and the sphere 14 is connected to the conduit on the outer peripheral side. Even in the case of contact, the leg portions 10 and 10 can be prevented from being bent inward, and the connection bar 41 can be easily manufactured.

  13c and 13d, the water channel component 1G shown in FIG. 13a is configured to remove the spheres 14 at both ends of the water channel component 1E shown in FIG. 13a and to contact the inner surface of the pipe P with the two spheres 14A at the center. . When the height of the leg part 10 is adjusted, the connecting bar 40 of this structure is supported in a state where the central shaft part 12 penetrates through the through holes at both ends and a small gap is left between the two nuts. The rotation of the central shaft portion 12 is not hindered. In this configuration, since the two spheres 14A closer to the center are in contact with the inner surface of the pipe line, even when the diameter of the pipe line P is small, the water channel constituent member 1G can be installed in a stable state with a small number of spheres.

  The water channel component 1H shown in FIG. 13e is characterized in that a semicircular arc-shaped sled 42 (only one is shown) is provided instead of the two spheres 14A near the center of the connecting bar 40. One end of the sled 42 is fixed to the connecting bar 40 by welding or the like, and the other end is a cantilever. According to this configuration, the water channel constituent member whose height has been adjusted can be easily inserted into the pipe. The shape of the warp is not limited to a semicircular arc shape, and may be an appropriate shape such as a shape in which the central portion is flat and both ends are curved upward, or a shape in which the central portion is welded and fixed.

  13f is characterized in that an adjusting bolt 14B is screwed into the connecting bar 40 instead of the sphere 14A in FIG. 13c. The adjustment bolt 14B has a hemispherical lower end, and is configured to be spherical and contact the inner surface of the pipe P. If comprised in this way, while the vertical position of a waterway structure member can be adjusted with the leg parts 10 and 10 of both ends, it can further adjust with the adjustment bolt 14B, and an adjustment width | variety can be enlarged. Further, the lower end of the adjustment bolt 14B is a spherical surface, and the insertion of the water channel component member 1I into the pipe P can be facilitated. Each water channel component 1E-1I shown in FIG. 13 is fixed in the pipe P with fillers, such as mortar, like the above. The mortar is preferably hit twice, and it is preferable that the pipe contact portion at the lower end is fixed first, and the upper surface is filled up to the second time to form an upper surface on an inclined surface.

  Still another embodiment of the present invention will be described with reference to FIG. FIG. 14 is a side view of a main part, in which a part of another embodiment of the present invention is broken. In FIG. 14 a, the water channel component 1 </ b> J includes a support member 50 that functions as a support portion at the end of the mounting plate portion 7. The support member 50 includes a support member 51 fixed to the mounting plate portion 7, an adjustment shaft 52 inserted through a through-hole penetrating the support member in the vertical direction so as to move up and down, and a sphere 53 fixed to the lower end of the adjustment shaft. A compression spring 54 wound around the outer periphery between the support member 51 and a fixing screw 55 screwed upward into the support member and having a sharpened portion locked to the adjustment shaft. When pressed against the compression spring 54, it can move upward in the axial direction, is locked by a fixing screw 55 at the moving position, and holds the water channel component 1J in the lowered position.

  That is, when the water channel component member 1J is pressed downward against the compression spring 54, the support member 51 is lowered with respect to the adjustment shaft 52, and the water channel component member 1J can be set to a predetermined height. Since 52 is locked by the fixing screw 55, it is configured to be held at that position. In this configuration, the water channel component member 1J can be further lowered by pushing it further, but when the lowered support member 50 is raised, it is necessary to loosen the fixing screw 55 and extend the compression spring 54. It becomes. When the height is adjusted again, the sharpened portion at the tip of the fixing screw 55 is locked so as to pierce the adjustment shaft 52. Thereby, the height of the support member 50 can be adjusted again.

  Next, in FIG. 14 b, the water channel component 1 </ b> K includes a support member 60 that functions as a support portion at the end of the mounting plate portion 7. Similarly to the support member 50, the support member 60 can adjust the vertical position when the water channel component member is pressed from above. In the support member 60, a case-like support case 61 is fixed as a support member to the mounting plate portion 7, and an adjustment shaft 62 passes through the vertical through hole. The adjustment shaft 62 is shaped like a truncated cone connected, and ratchet claws 63, 63 facing the inside of the support case 61 are in elastic contact with the inclined surface. A compression spring 65 is wound around the outer periphery between the sphere 64 fixed to the lower end of the adjustment shaft 62 and the support case 61.

  In this configuration, when the water channel constituent member 1K is pressed downward against the compression spring 65, the support case 61 is lowered with respect to the adjustment shaft 62, and the water channel constituent member 1K can be set to a predetermined height. Since the adjustment shaft 62 is locked by the ratchet claws 63, 63, the adjustment shaft 62 is held at that position. The support member 60 can be set to a desired position by pressing the water channel component 1K. However, when the support member 60 is raised when it is lowered too much, the ratchet claws 63 and 63 in the support case 61 are widened. By extending the compression spring 65 and lowering the adjustment shaft 62 with respect to the support case 61, the water channel constituent member 1 </ b> K can be raised. The water channel fixing members 1J and 1K shown in FIG. 14 are also filled with a mortar or the like, and the space with the pipe is filled and fixed. This fixing is also preferably performed twice by mortar. The adjusting shaft is not limited to the shape in which the truncated cones are connected, but may be one in which a sawtooth claw is formed on the side of the shaft.

  Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention described in the claims. Design changes can be made. For example, the extending / contracting direction of the leg portion is not limited to the vertical direction, but may extend so as to spread downward at a predetermined angle. In addition, a long nut-shaped fixed pipe portion is attached to the mounting plate portion as a leg portion, and an example of a central shaft portion screwed to the long nut is shown, but a normal nut is fixed to the mounting plate portion by welding or the like, You may comprise so that a normal volt | bolt may be screwed together to this nut.

  Furthermore, in the above-described embodiment, an example in which the connection flange portion is fixed with bolts and nuts to connect a plurality of waterway constituent members has been shown. However, a groove is formed on one end side, and the other end is inserted and bonded. You may make it press-fit. An example in which four legs are fixed close to the joint flange as the support part of the waterway component is shown, but two legs are fixed in the middle of the flanges at both ends, and are connected and installed in the pipeline In such a state, the lengths of the two leg portions may be changed to adjust the vertical position of the water channel constituent member. In order to adjust the support portion from above, the adjustment portion is exposed. However, a hole may be formed in the inclined portion continuous from the invert portion, and the adjustment may be made from this hole.

About other embodiment of the waterway constituent member of the present invention, an embodiment at the time of changing the shape seen in the fracture surface perpendicular to the waterway direction is described below. First, as shown in the front view of FIG. 15a, the opening shape of the invert part 2 is formed so that H, which is the longest length in the horizontal direction, is twice or more than B, which is the deepest length in the vertical direction. Note that the opening shape of the invert portion 2 shown in FIG. 15a is a circular arc having a single radius of curvature and a central angle θ ₀ smaller than 180 degrees.

  Further, the inclined portion 5 is inclined with a predetermined gradient β from the horizontal direction so as to be continuous with the invert portion 2 and the rising portion 6. The gradient β is preferably about 20%, similar to the gradient α of the inclined portion 5 shown in FIG. 1a, but an appropriate gradient can be selected in consideration of securing the water cross-sectional area.

Furthermore, it is preferable to set the member width h in the vertical direction near the bottom center of the invert portion 2 as small as possible. Here, the vicinity of the center of the invert part bottom is, for example, an angle range indicated by the central angle θ ₁ in FIG. 15A. For example, the central angle θ ₁ can be set to about 90 degrees. Further, the connecting hole 4 for bolting the water channel component 1L and the water channel component 1L is provided in a portion of the joint flange portion 3 other than the vicinity of the center of the bottom of the invert portion.

  When connecting the water channel component 1L, at least the water channel component 1L installed at the lowest point when a predetermined longitudinal gradient is set is used by reducing the member width h as much as possible. It is possible to increase the degree of freedom in setting the gradient when further extending.

  FIG. 15b illustrates the difference in the amount of filler when the conventional waterway component and the waterway component 1L of the present invention are used in a cross-sectional view. In the figure, the inverted portion and the inclined portion 5A of the two-dot chain line show a case where a conventional water channel constituent member is installed, and the solid line portion showing the embodiment of the present invention is the filler of the cross-sectional area of the hatched portion 5B. The amount is different. This is due to the fact that the invert portion 2 has a longest horizontal length that is at least twice the deepest vertical length. Even when two or more inclined portions 5 and 5 and rising portions 6 and 6 are provided on the left and right sides of the invert portion 2, the amount of filler can be reduced as compared with the conventional case.

  FIG. 16 shows another embodiment of the waterway component. FIG. 16 a is a shape in which the opening shape of the fracture surface perpendicular to the water channel direction of the invert part 2 is a smooth curve, and two inclined parts 5, 5 and two rising parts 6, 6 are provided on the left and right sides of the invert part 2. The waterway component 1L of the structure each provided is shown.

  FIG. 16b shows a water channel component 1M in which the opening shape of the invert portion 2 is formed into a horizontally long substantially rectangular shape, and the inclined portion 5 and the rising portion 6 are provided on the left and right, and FIG. An opening shape is a polygonal shape (the figure shows a heptagon), and the water channel component 1N including the inclined portion 5 and the rising portion 6 is shown in the same manner as described above. Here, the substantially rectangular shape means that a rectangle is included in addition to a shape in which the lower end corner portion of the rectangle is chamfered as shown in the figure. In the case where the opening shape is a polygonal shape, the invert portion 2 having a semicircular shape or a shallower bottom is formed by forming the maximum length in the horizontal direction to be twice or more the deepest length in the vertical direction. be able to. Note that the polygonal invert portion 2 is not limited to the illustrated embodiment, and it is of course possible to select an appropriate shape such as a triangle or a pentagon. The setting of the slope β of the inclined portion 5 and the member width h in the water channel constituent members 1M and 1N is the same as that of the water channel constituent member 1L.

  In addition, embodiment shown in FIG. 16 shows the variation of the shape of a waterway component, and it can be set as the structure provided with the leg parts 10 and 15 as mentioned above in the waterway component of this shape. Of course.

  FIG. 17 is a cross-sectional view illustrating the difference in flow rate between the conventional waterway constituent member and the waterway constituent member 1L of the present invention. Similarly to FIG. 15b, in FIG. 17a, the invert part of the two-dot chain line shows a case where a conventional water channel constituent member is installed, and the flow rate of the invert part is represented by W1. FIG. 17b is a diagram in which the flow rate when the water channel component 1L of the present invention is used is further added to FIG. 17a. W1c is a flow rate determined by the central angle θ, and W1b is a flow rate determined by the shapes of the left and right inclined portions and the rising portion on the upper surface of the invert portion. W2a and W2b indicate flow rates newly formed on the left and right of the invert part by the left and right inclined parts and the rising part, respectively. Here, the flow rate W1 of the conventional waterway constituent member is W1a + W1b + W1c. On the other hand, the flow rate W2 of the waterway constituent member of the present invention is W2a + W2b + W1b + W1c. If the opening shape of the invert part 2 is formed so that H, which is the longest length in the horizontal direction, is twice or more than B, which is the deepest part in the vertical direction, the flow rate is reduced by the flow rate W1a on the upper surface of the invert part. As a matter of concern, according to the present invention, the reduced flow rate can be supplemented with W2a + W2b, which is a flow rate newly formed by the left and right inclined portions and the rising portion, so that a predetermined flow rate is ensured. However, the amount of filler can be reduced and the filling time can be shortened. By arbitrarily setting the central angle θ and the shapes of the left and right inclined parts and the rising part, it is possible to satisfy a predetermined design specification related to the flow rate.

  As another embodiment of the waterway constituent member of the present invention, waterway constituent members 1P and 1Q in which hook members 3a and 3b for engaging the joint flange portion 3 of the adjacent waterway constituent member are attached to the joint flange portion 3 are shown in FIG. It shows. The waterway constituent members 1P and 1Q are waterway constituent members including the hook member 3a or the hook member 3b applied to the waterway constituent member 1 to the waterway constituent member 1N described above. The hook member 3a shown in FIG. 18a is formed in a U-shape whose cross section is open upward, and is fixed in advance in a state where the hook member 3a is hooked on the joining flange portion 3, and is adjacent to the water channel component member. The joint flange portion 3 can be dropped into the hook member 3 and locked.

  The hook member 3b shown in FIG. 18b is formed by bending one elongated rod-like member. The shape is such that the side portions 3b1 and 3b1 that are U-shaped upwards are formed on the left and right sides, and the left and right side portions 3b1 and 3b1 are connected by the connecting portion 3b2 that extends horizontally from the ends of the side portions 3b1 and 3b1. It is a connected shape. The rising part of the U-shaped side part 3b1 opened upward is hooked and fixed to one joining flange part 3, and the other joining flange part 3 is connected to the horizontal part of the connecting part 3b2 and the side parts 3b1 and 3b1. Can be dropped and locked.

  The hook members 3a and 3b described above can be manufactured as a plastic molded product or a metal casting. Further, the hook member is not limited to the illustrated embodiment, and may be any shape that can lock the joint flange portion 3 of the adjacent water channel constituent member.

  The hook member 3a (or 3b) is attached only to the joint flange portion 3 at one end of the water channel constituent member 1P (or 1Q), and the hook member 3a (or 1Q) of the water channel constituent member 1P (or 1Q) installed adjacently. The joint flange portion 3 to which 3b) is not attached is locked and bolted, and this operation is sequentially repeated to install the water channel component 1P (or 1Q) in the pipe. Further, hook members 3a (or 3b) are respectively attached to the joint flange portions 3 and 3 at both ends of the water channel component 1P (or 1Q), and the water channel components 1P (or 1Q) and the hook members 3a (or 3b) are attached. It is also possible to alternately connect the waterway constituent members 1P (or 1Q) to which no is attached.

  Further, FIG. 19 shows another embodiment of the present invention. FIG. 19 a shows an embodiment in which two fixing members 9 that extend obliquely downward from the lower surface of the invert part 2 and are fixed to the inner surface of the pipe P are used per one water channel component member. An enlarged view of a portion surrounded by a two-dot chain line in FIG. 19a is shown in FIG. 19b. An angle member 92 is fixed to the back surface of the invert portion 2, and the angle member 92 is also fixed to the inner surface of the pipe P via an anchor bolt 93. As shown in the figure, for example, two elongated plates 91a and 91b are coupled by bolts 95a, and bolts 94a and 94b are inserted into coupling holes drilled at both ends and coupling holes of both angle members 92 and 92, respectively. Tighten the nut.

  Since the two elongated plates 91a and 91b are bolt-coupled, after adjusting the level of the water channel component, the length is adjusted by the bolt coupling portion 95 according to the separation between the bottom surface of the invert portion 2 and the pipe P. It can be performed. The adjustment of the length of the elongated plates 91a and 91b in the bolt coupling portion 95 means that a long hole is formed in at least one of the elongated plates 91a or 91b constituting the bolt coupling portion 95, and the bolt 95a is inserted into the elongated hole. The extension of the two elongated plates 91a and 91b is adjusted by sliding. As another embodiment, both the elongated plates 91a and 91b can be bent at the bolt coupling portion 95 so as to match the distance between the lower surface of the invert portion 2 and the pipe P. One elongated plate may be used as long as two are not bolted together. Further, as shown in the drawing, two fixing members 9 and 9 can be used per one waterway component member, and three or more can be used. The elongated plate can be manufactured as a metal casting or a plastic molded product.

  Further, as another embodiment of the fixing member 9, although not shown, one end of the elongated plate is fixed to the mounting plate portion 7, and the other end is connected to the inner surface of the pipe P and the angle member 92 in the same manner as described above. It can also be fixed with bolts 93.

The front view which shows one Embodiment of the water-course structural member which concerns on this invention. Sectional drawing of the state which changed the height of one Embodiment of the watercourse component based on this invention. The top view of the waterway component shown in FIG. The side view of the waterway component shown in FIG. FIG. 2 is a perspective view of a water channel component member shown in FIG. 1. The principal part sectional drawing which shows the detail of the leg part as a support part of the waterway structure member of FIG. The principal part sectional drawing which shows other embodiment of a leg part. Sectional drawing under construction which shows the construction method of the waterway structural member shown in FIGS. The principal part sectional drawing after construction which shows the construction method of the waterway component shown in Drawings 1-4. Sectional drawing of the longitudinal direction of the pipe line which shows the construction method of the waterway structural member shown in FIGS. The perspective view of a channel constituent member provided with a leg on one side. The principal part side view which shows the connection state of a waterway structural member provided with a leg part in one side. The side view which shows the other connection state of a waterway structural member provided with a leg part on one side. The perspective view of other embodiment of the waterway constituent member concerning the present invention. Sectional drawing which shows the process of the construction method of the waterway structural member shown in FIG. The front view which fractured | ruptured a part of other embodiment of the waterway component based on this invention. FIG. 12 is a cross-sectional view of a main part of FIG. AA line sectional view of Drawing 11 (a). BB line principal part sectional drawing of FIG.11 (c). Sectional drawing which shows the process of the construction method of the waterway structural member shown in FIG. The principal part sectional view showing other embodiments of the channel composition member concerning the present invention. The principal part sectional view showing other embodiments of the channel composition member concerning the present invention. The principal part sectional view showing other embodiments of the channel composition member concerning the present invention. The principal part sectional view showing other embodiments of the channel composition member concerning the present invention. The principal part sectional view showing other embodiments of the channel composition member concerning the present invention. The principal part sectional view showing other embodiments of the channel composition member concerning the present invention. The side view which fractured | ruptured one part which shows other embodiment of the waterway component based on this invention. The side view which fractured | ruptured one part which shows other embodiment of the waterway component based on this invention. The figure explaining the opening shape of an invert part, and the gradient of an inclined part. Explanatory drawing explaining the difference in the quantity of the filler at the time of using this invention and the conventional waterway structural member. The perspective view which shows other embodiment of the waterway structure member which concerns on this invention. The perspective view which shows other embodiment of the waterway structure member which concerns on this invention. The perspective view which shows other embodiment of the waterway structure member which concerns on this invention. Sectional drawing explaining the flow volume at the time of using the conventional waterway structural member. Sectional drawing explaining the difference in the flow volume of the conventional waterway component and the waterway component of this invention. Sectional drawing which shows other embodiment of the waterway structure member which concerns on this invention. Sectional drawing which shows other embodiment of the waterway structure member which concerns on this invention. Sectional drawing which shows other embodiment of the waterway structure member which concerns on this invention. Sectional drawing which expanded the fixing member of the waterway structure member of Fig.19 (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A-1Q ... Waterway component member, 2 ... Invert part, 3 ... Joint flange part, 3a, 3b ... Hook member, 10, 15 ... Leg part (support part), 7 ... Mounting plate part, 9 ... Fixing member, DESCRIPTION OF SYMBOLS 11 ... Fixed pipe part, 12 ... Center shaft part, 13 ... Hexagon socket, 14, 14A, 53, 64 ... Sphere, 16 ... All bolts, 17 ... Double nut (adjustment part), 20, 50, 60 ... Support member, DESCRIPTION OF SYMBOLS 21 ... Plate spring part, 22 ... Support member, 23 ... Center shaft part, 24, 55 ... Fixing screw (fixing means), 25 ... Stopper, 30 ... Gradient setting device, 32 ... Hexagon stick, 54, 65 ... Compression spring 63, ratchet claws (fixing means), D, D1 to D3, distance, P, conduit, S, hexagon stick spanner, M, M1, M2 mortar, H, maximum horizontal length, B, vertical direction Deepest length, α, β ... gradient, θ ₀ , θ ₁ … center angle

Claims (6)

A waterway constituent member comprising a bowl-shaped invert portion that opens upward and through which sewage flows, and that constitutes a new waterway in a conduit buried in the ground,
The water channel component member includes a joint flange portion for joining to an adjacent water channel component member at both ends in the water channel direction, and the water channel component adjacent to the water channel component member at one or both ends in the water channel direction. A waterway constituent member comprising a hook member capable of locking a joining flange portion of the constituent member.   The water channel constituent member includes at least one support portion that is fixed to the back surface side of the water channel and the other side is in contact with the inner surface of the conduit, and the support portion changes a distance between the one side and the other side. The vertical position of the water channel constituent member in the pipe can be adjusted by adjusting the length of the support part, the lower end of the support part abutting against the inner wall of the pipe, and the water channel constituent member in the pipe The waterway constituent member according to claim 1, wherein the waterway constituting member can be inserted into the waterway.   The opening shape of the fracture surface perpendicular to the water channel direction of the invert part is a shape in which the maximum length in the horizontal direction is twice or more the deepest length in the vertical direction. A waterway component.   At least one or more inclined portions that are continuous outward from the upper end of the invert portion, and rising portions that extend upward from the outer peripheral end of the inclined portion are provided on the left and right sides of the invert portion, respectively. The waterway constituent member according to any one of claims 1 to 3. A waterway constituent member comprising a bowl-shaped invert portion that opens upward and through which sewage flows, and that constitutes a new waterway in a conduit buried in the ground,
The water channel constituent member includes a joint flange portion for joining to an adjacent water channel constituent member at both ends in the water channel direction, and the joint flange portion has a vertical member width in the vicinity of the bottom center of the invert portion. A water channel constituent member characterized by being formed to be the smallest compared with other parts of the part. A waterway constituent member comprising a bowl-shaped invert portion that opens upward and through which sewage flows, and that constitutes a new waterway in a conduit buried in the ground,
The water channel component member includes at least one fixing member that connects the inner surface of the channel and fixes the water channel component member in the channel.

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