JP4008705B2 - Connection plate for installation on the inner surface of an existing pipe of an extension pipe fixing device, and installation method of extension pipe using the connection plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting plate for connecting an extension pipe fixing device for installing an extension pipe on the inner surface of an existing pipe line.
[0002]
[Prior art]
Conventionally, as a method of adding another pipeline or cable to the existing pipeline, especially the inner surface of the buried pipeline, (1) Robot construction method (method using cable laying robot), (2) Saddle construction method (man (3) Saddle pipe construction method (Saddle pipe is put into an existing pipe and existing pipes and sheath pipes are installed by a hand fitting called a saddle) There is a method of laying pipes and cables in between), (4) a drawing method (a method of drawing pipes and cables into existing pipes, etc.), etc. Construction cannot be performed unless the robot can smoothly pass through the pipeline. In the construction method (2), there are environmental conditions that allow workers to enter the pipeline and work safely. In the construction method (3), there is an existing pipe. Insert another tube called the sheath tube The inner diameter of the existing pipe is considerably reduced by attaching the small pipe or cable to the gap between the pipe and the existing pipe. In the method (4), the pipe or cable is drawn into the pipe to keep it in place. In this case, there are various problems such as a problem of cleaning and a problem of a decrease in flow ability because dust is caught. For this reason, the present inventor has previously proposed an extension pipe fixing device to the existing pipe inner surface and a method for fixing the extension pipe that can solve these problems (Japanese Patent Application No. 2001-216028).
[0003]
[Problems to be solved by the invention]
The extension pipe fixing device is provided with an extension pipe holding means provided with one or more extension pipe insertion holes as shown in FIG. 6, and the lower part of the holding means is in contact with the inner surface of the existing pipe line. The contact surface is a fixed plate made of a thin plate having the same curved surface as the inner surface of the existing pipe line, and is interposed between the additional pipe holding means and the fixed plate, and a part thereof is embedded in the lower part of the additional pipe holding means. The fixing of the extension pipe to the inner surface of the existing pipe, characterized by comprising fixing means made of a plate or a line having a curved surface longer than the fixing plate and larger in diameter than the circumference of the inner circumference of the extension pipe Device. It has been desired to propose or develop a means or apparatus capable of easily and smoothly installing the additional pipe fixing device on the inner surface of the existing pipe line.
[0004]
[Means for Solving the Problems]
As a result of earnest research to solve the above-mentioned problems, the present inventor attached an extension pipe fixing device to the center of a rectangular plate that can be inserted from a manhole, and connected the plate to the extension pipe fixing device in the existing pipe line. The inventors have found that the above-mentioned problems can be solved by burying the material, and have reached the present invention.
That is, the present invention is (1) a rectangular plate of a size that can be inserted from a manhole. The plate has a flat central portion, both side portions projecting into a square shape, It has a cross-sectional structure whose tip is in contact with the inner bottom of the existing pipe line, and has a connecting means structure portion of an additional pipe fixing device at the center both side end portions of the flat portion at the center of the plate. A coupling hand for connecting to the other plate at one end of the central plane of the plate, an insertion hole for inserting the coupling hand at the other end, a fitting hole for fitting with the coupling hand, and four corners of the plate Connecting plate for installation on the inner surface of the existing pipe of the extension pipe fixing device having a structure in which the tip portions of both side surfaces are circularly shaped. (2) The connecting means structure portion of the extension pipe fixing device is attached and opened. The connection plug according to (1), which has a structure that can be operated with one touch. (3) The coupling hand has a flange portion to be inserted into the insertion hole of another connecting plate at the tip thereof, and has a hole having the same size as the fitting hole of the plate from the center thereof. (1) the connecting plate according to (1), wherein the extension pipe fixing device has an extension pipe insertion hole. The connecting plate according to (1) or (2), comprising a holding means, a fixing plate, and fixing means for fixing the fixing device in the pipe line at the tip of the fixing plate, (5) Introduce one of the listed connection plates to the bottom of the pipeline in the manhole, attach the expansion pipe fixing device to the specified position of the connection plate, and insert and fix the expansion pipe into the expansion pipe insertion hole of the expansion pipe fixing device. Insert the connecting plate into the pipe line from the connecting plate connecting hand side, and then fix it. Insert and fix the rear head of the added extension pipe into the extension pipe insertion hole of the next extension pipe fixing device, fix the extension pipe fixing device to the next connection plate, and fit the joint of the connection plate with the previous connection plate. In addition, the present invention relates to an installation method for an extension pipe, which is characterized by repeatedly performing an operation of feeding the pipe into the pipeline, and fixing and fixing the extension pipe fixing device and the extension pipe in the pipeline.
[0005]
The present invention uses an expansion pipe fixing device that adds one or more (single or plural) other pipes (pipe for installation of cables, etc.) to the inner surface of existing pipes (mainly sewer pipes). Is a connecting plate for fixedly installing in the existing pipeline.
The connecting plate of the present invention will be described in detail below.
FIG. 1 is a schematic plan view of a connecting plate for installing the expansion pipe fixing device of the present invention, FIG. 2 is a schematic cross-sectional view of the end of the connecting plate of the present invention, and FIG. FIG. 4 is a schematic view of the structure of the connecting portion of the extension pipe fixing device, FIG. 4 is a schematic sectional view of the connecting hand of the connection plate, and FIG. 5 is a schematic view of the structure in which the extension pipe fixing device is attached to the connection plate of the present invention. FIG. 6 is a structural schematic diagram of the extension pipe fixing device. FIG. 7 is a schematic view in which the extension pipe fixing device and the extension pipe are mounted on the connection plate of the present invention. In the figure, 1 is a connecting plate, 2 is a plane portion of the connecting plate, 3, 3 'is a connecting means structural part of the extension pipe fixing device, 4 is a connecting plate joint, 5 is a tip joint flange of the joint, and 6 is a joint. Hand fixing means, 7 is a joint hand insertion hole, 8 is a joint hand tip fitting hole, 9, 9 'are pin fixing holes, a, a' are side ridges of the connecting plate, and b, b 'are side edges. And c are mounting positions of the fixing means of the extension pipe fixing device, and d is an opening position of the fixing means. Further, 11 is an extension pipe fixing device, 12 is an extension pipe holding means, 13 is a fixing plate, 14 is a fixing means, 15 is an extension pipe insertion hole, 16 is a fixing means stopper, 17 is a fixing plate coupling portion, and 18 is an extension. It is a tube.
In the present invention, an existing pipe, for example, a sewer pipe provided in the ground, or the like, one or more pipes (single or plural) such as an extension pipe, for example, a pipe for storing a cable (for example, an optical communication cable, an electric wire, etc.) This is a connection plate of an expansion pipe fixing device for easily and surely installing an expansion pipe on the inner surface of an existing pipe line, and an expansion pipe fixing method using the connection plate.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the connection plate of the extension pipe fixing device to the existing pipe inner surface of the present invention is a rectangular plate and has a size that can be inserted from a manhole. The plate has a cross-sectional structure as shown in FIG. 2, the central part has a flat plate-like flat part, its both side surface parts project in a U shape, and the tip part of each side surface is the inner surface of the existing pipe line It has a structure that touches. A connecting means structure portion 3 for attaching both ends of the fixing means of the extension pipe fixing device 11 is provided at the front end portions on both sides of the center of the flat portion 2 of the plate. As shown in FIG. 3, the connecting means structure portion 3 has a structure in which the fixing means of the additional pipe fixing device is attached and fixed at the position c, and the fixing means is opened at the position d.
The connecting plate is provided with a connecting plate joint 4 at one end and a joint insertion hole 7 and a joint tip fitting hole 8 at the other end.
The joint 4 has a cross-sectional structure as shown in FIG. 4, and has a flange 5 at the tip of the joint 4 to be inserted and joined to the joint tip fitting hole 8 of another connecting plate. In the middle portion, there is a coupling hand fixing means 6 for inserting and fitting into the coupling hand insertion hole 7 of the coupling plate, and a split pin is provided as an auxiliary coupling means when the coupling hand 4 and another coupling plate are coupled. Holes 9 and 9 'for insertion are provided. The connecting hand 4 is connected and connected to other connecting plates to form a plurality of connected connecting plates. As shown in FIG. 5, the connecting plate is a jig that installs the additional pipe fixing device 11 at a predetermined position and conveys and sets the extension pipe fixing apparatus 11 to a main point in the pipe.
As described above, as shown in FIG. 5, the connecting plate 1 of the present invention has the extension pipe fixing device 11 attached at a predetermined position thereof, and a number of these are connected to add one or more extension pipes to the existing pipe inner surface. Is. The extension pipe fixing device 11 is attached to the connecting means structure portion 3 of the fixing device provided on the central side surface portion of the connecting plate via the fixing means 14. As shown in FIG. 6, the extension pipe fixing device 11 includes extension pipe holding means 12 provided with one or more extension pipe insertion holes 15, and a fixing plate 13 and a lower portion of the extension pipe holding means 12. Fixing means 14 is provided. The fixing plate 13 protrudes larger than both end portions of the holding means 12, and the protruding portion has the same diameter as the diameter of the existing pipe inner surface, and is about 1/5 to 1 / of the circumference. It consists of a thin metal plate over a length of three. The fixing means 14 is between the extension pipe holding means 12 and the fixing plate 13, and a part of the fixing means 14 is embedded in the extension pipe holding means, and is longer than the fixing plate 13 and close to the extension pipe holding means 12. It consists of a plate-like body or a linear body that is the same as the diameter of the circumference of the road inner surface, but is designed to have a diameter that is larger than the diameter of the circumference of the inner face of the pipe as it goes to the tip on both sides. It is. On the other hand, the connecting plate has a connecting means structure portion 3 composed of a recess d on both sides of the center of the connecting plate and a gap c formed by the recess d and a part of the side surface. The tip of the fixing means 14 of the extension pipe fixing device 11 is fitted into the gap c of the part 3, and the extension pipe fixing device 11 is attached to the connecting plate 1. After the extension pipe 18 is inserted into the extension pipe insertion hole 15 of the extension pipe fixing device 11, the connecting plate to which the extension pipe fixing device is attached is introduced into the pipe, and the extension pipe fixing apparatus 11 is arranged on the inner surface of the pipe. The tip of the fixing means 14 of the extension pipe fixing device is moved from the gap c to the recess d to release and fix the extension pipe fixing device 11 to the inner surface of the pipe. The extension pipe fixing device 11 is fixed and fixed to the inner surface of the pipe line by the repulsive force due to the design of the diameters of both ends of the fixing means, and the fixing means stopper 16 is provided at the distal end portion of the fixing means 14, thereby further strengthening. The extension pipe fixing device can be fixedly fixed to the inner surface of the pipe line. The fixing means 14 is made of a metal or alloy having resilience, for example, by using a metal of a standard number (JIS G3502) standard name (SWRS 62A, B-87A, B) of the JIS spring standard. The extension pipe fixing device 11 is fixed to the inner surface of the pipe line by force.
Further, the extension pipe holding means 12 is not only for inserting and holding the extension pipe, but also provided with a protrusion at the center of the extension pipe insertion hole 15, and the extension pipe is inserted from both sides of the extension pipe insertion hole 15. An insertion tube stopper, which is a protrusion that enables the joint, is provided, so that the expansion tube can be inserted and held, and the expansion tube can be easily connected and fixed.
The connecting plate 1 of the present invention can be made of metal, plastic, or the like, and the size thereof is inserted through the manhole for assembly. Therefore, the connecting plate 1 is preferably smaller than the diameter of the manhole. The connecting plate has a rectangular shape as shown in FIG. 1, but its horizontal length is preferably 750 mm, for example, and the overall vertical length is appropriately selected from the size of the pipe inner surface and the size of the additional pipe fixing device. For example, it is 140 mm. At this time, the vertical length of the central plane portion is about 70 mm, the length from the side ridges a to a ′ is about 95 mm, and the bottom side b of the side surface of the connecting plate is ridge a or b ′ to a ′. The height is configured to be about 22.5 mm. Further, the four corners of the side bases b and b ′ are rounded. Thereby, this connection plate can be smoothly pushed out or pulled to the pipe inner surface. The thickness of the connecting plate is appropriately adopted, but it is about 2 mm for a metal plate. The size of the connecting plate coupling hand 4 is appropriately selected and adopted. In the case of the connecting plate having the above-described size, the overall length of the connecting plate is 141 mm, and the length of the connecting portion with the connecting plate is 30 mm. Further, the vertical length is about 50 mm, and the joint fixing means 6 is provided in the joint 4 and is a hole having the same size as the joint insertion hole 7 of the connecting plate provided in the joint 4. stepwise at one end of which is made of a structure consisting of an upper and a lower. The step is about 4.5 mm, the lower surface of the upper stage is fixedly fixed to the upper surface of the joint, the size of the upper part of the fixing means 6 is about 10 mm on the side, and the lower stage is located below the hole. The size is the same as that of the hole, the width is about 28 mm, and the vertical size is about 38 mm. Further, the other end of the connecting plate is provided with a coupling means insertion hole 7 and a fitting hole 8 for fitting with the flange of the distal end of the coupling hand. The size of the fitting hole 8 that fits about 30 mm and the length is about 40 mm, and fits with the flange at the tip of the joint is about 3.5 mm in the horizontal direction and about 52 mm in the vertical direction. The length of the extension pipe used in this plate is 1500 mm, the vertical length of the plate is 750 mm, and the attachment position c of the fixing means of the extension pipe fixing device is set at the center. In addition, this dimension is a dimension modeled on the existing sewer existing pipe No. 1 manhole diameter 900mm, pipe diameter φ200mm sewer pipe, and if the manhole size and pipe dimensions change, the dimensions will be changed accordingly Needless to say.
[0007]
A method for fixing and installing an additional pipe on the inner surface of an existing pipe line using the connection plate of the present invention will be described.
One of the connecting plates 1 is introduced into the bottom of the pipe in the manhole, and as shown in FIG. 5, the fixing means 14 of the additional pipe fixing device 11 is connected to the gap c of the connecting plate (the mounting position of the fixing means of the additional pipe fixing device). c), fixing and mounting, and the expansion pipe 18 is attached and bonded and fixed from the A side in FIG. 5 to the central hole of the expansion pipe insertion hole 15 of the expansion pipe fixing device. That is, when the connecting plate is inserted into the pipe line from the connecting plate coupling hand side and the rear head of the extension pipe 18 inserted into the extension pipe fixing apparatus 11 comes to the center of the manhole, the next extension pipe fixing apparatus 11 is inserted. 5 is fixed to the B side in FIG. 5, and the fixing means 14 of the additional pipe fixing device 11 is fitted and fixed to the gap c of the next connecting plate. The connecting plate coupling hand 4 is fitted to the previous connecting plate, B side direction Fed to the conduit portion, by repeatedly performing this operation, introducing placing additional tube fixing device 11 equipped with expansion tube 18 together with the coupling plate 1 as shown in FIG. 7 in conduit. After confirming the position of the expansion pipe fixing device 11 in the pipeline, when a series of connecting plates are pulled in the direction of the A side (the side with the insertion hole and the fitting hole connected to the joint), the gap portion of the connecting plate 1 The fixing means 14 of the extension pipe fixing device 11 fixed at the position c moves from the gap c to the recess d, and the side of the fixing means 14 of the extension pipe fixing device 11 is open at the recess d. Released from the connecting plate. As described in [0006], the fixing means 14 is a plate-like body or a linear body that is designed to have a diameter larger than the circumference of the inner surface of the pipe line, so that it can be expanded by its repulsive force. The pipe fixing device 11 is fixed together with the extension pipe 18 in the pipe line. At this time, the additional pipe fixing device 11 is firmly fixed to the inner surface of the pipe line by the fixing means stopper 16 at the tip of the fixing means 14. The fixing means stopper 16 is made of the same material as the fixing means 14. After the extension pipe fixing device 11 is released and detached, the connecting plates 1 are removed and collected one by one in the manhole.
In the connection plate 1 of the present invention, when the connection plate 1 is connected, the connection plate 1 is slightly opened, and the connection plate 1 can be bent even if the connection plate 1 is bent due to the displacement. This makes it possible to construct an expansion pipe using the.
[0008]
【The invention's effect】
The connection plate of the present invention can be introduced from the manhole, and after being introduced from the manhole, an extension pipe fixing device is attached to the connection plate, and a large number of the extension pipes are connected to the inner surface of the existing pipe. The center position of the fixing device can be determined and secured while balancing the extension pipe fixing device and the extension pipe. At this time, the connection plate and the extension pipe fixing device can be mounted and opened with a one-touch structure. The bottom of the connecting plate is sled, and it is slippery, easy to push and pull, and the survey camera can be moved freely to the center plane, so that the extension pipe The excellent effect that the expansion pipe can be fixed and fixed to the inner surface of the existing pipe line very easily, surely and safely due to easy positioning etc. It is intended to.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a connecting plate for installation on the inner surface of an existing pipe line of an additional pipe fixing device of the present invention.
FIG. 2 is a schematic cross-sectional view of an end portion of a connection plate according to the present invention.
FIG. 3 is a structural schematic diagram of a coupling site for mounting an additional pipe fixing device at the center of a connection plate of the present invention.
FIG. 4 is a schematic sectional view of a connecting hand of the connecting plate of the present invention.
FIG. 5 is a schematic diagram of a normal structure in which an extension pipe fixing device is attached to the connection plate of the present invention.
FIG. 6 is a schematic view of the structure of an expansion pipe fixing device.
FIG. 7 is a schematic view in which an extension pipe fixing device and an extension pipe are mounted on the connection plate of the present invention.
[Explanation of symbols]
1. Connecting plate 2. The flat portions 3, 3 '. 3. Connection means structure part of the extension pipe fixing device 4. Connection plate coupling hand 5. Tip joint flange of the joint hand 6. Joint hand fixing means Joint hand insertion hole 8. 8. Joint hand tip fitting hole 9, 9. Pin fixing holes a, a ′. Side ridges b, b '. Side edge c. Mounting position of fixing means of expansion pipe fixing device d. 10. Opening position of the fixing means Expansion pipe fixing device 12. Additional pipe holding means 13. Fixed plate 14. Fixing means 15. Additional pipe insertion hole 16. Fixing means stop 17. Fixed plate coupling part 18. Expansion pipe

Claims (4)

A rectangular plate of a size that can be inserted from a manhole, the plate having a flat central portion, and a pair of side ridges a and a 'parallel to both side surfaces, thereby providing both sides the shape has a cross-section structure as the tip portion of the both side portions are in contact with the existing conduit bottom, a recess d provided in the center sides ends of the central flat portion of the plate, the recess The fixing means 14 of the additional pipe fixing device 11 is inserted and fixed in a gap portion c formed by d and a part of the side surface portion on one side of the concave portion d on both sides of the center, and the fixing means 14 is fixed to the gap portion c. It has a connecting means structure part 3 of the extension pipe fixing device that is moved to the recess d side to release the extension pipe fixing device 11 , and is connected to the other plate at one end of the central plane portion of the plate To join the other connecting plate at the other end An extension pipe having an insertion hole 7 for inserting a joint and a fitting hole 8 for mating with the joint, and having a structure in which tip portions on both side surfaces of the plate are formed in an arc shape. Connecting plate for installation on the inner surface of the existing pipe line of the fixing device. The coupling hand 4 protrudes from the coupling plate 1 and has a flange portion 5 inserted into the fitting hole 8 of the other coupling plate at the tip thereof, and is identical to the coupling hand insertion hole of the plate from the center thereof. 2. The connecting plate according to claim 1, comprising a hole having a size and provided with stepped joint fixing means 6 above and below the hole. Expansion tube holding means 12 extension tube fixing device 11 has a extension tube insertion hole 15, becomes the fixing device In the front end portion of the fixing plate 13 and the fixed plate from the fixed unit 14 for fixing the conduit, the fixed The means 14 is made of a plate-like body or a linear body having a curved surface longer than the fixed plate 13 and having a diameter larger than the diameter of the additional pipe inner surface circumference, and is fixed by the gap c of the connecting means structure portion 3. connecting plate according to claim 1, wherein comprising Te. One of the connecting plates 1 according to claim 1 is introduced into the bottom of the pipe in the manhole, and the connecting means 14 of the extension pipe fixing device 11 is attached to a predetermined position c (gap part c) of the connecting plate, and the extension The extension pipe 18 is inserted and fixed in the extension pipe insertion hole 15 of the pipe fixing apparatus, the connection plate is inserted into the pipe line from the connecting plate coupling hand side, and then the back of the inserted extension pipe is connected to the next extension pipe fixing apparatus. Inserting and fixing to the additional pipe insertion hole, fixing the additional pipe fixing device to the next connecting plate, fitting the connecting hand of the next connecting plate with the previous connecting plate, from the B side (joining hand side) Repeat the operation of feeding into the pipe line, and then confirm introduction of the expansion pipe fixing device and the expansion pipe to the arrangement position in the pipe line, and then connect the series of connection plates to A example (insertion holes and fittings connected to other joints) Example with joint hole) Pull in the direction, connecting plate 1 The coupling means 14 of the extension pipe fixing device 11 fixed at the position of the gap c is moved from the c part to the d part, the fixing means 14 of the extension pipe fixing apparatus 11 is released at the d part, and the released extension The pipe fixing device 11 is fixed to the inner surface of the pipe line together with the extension pipe by the spring of the fixing means 14 of the extension pipe fixing apparatus, and then the released connection plate of the extension pipe fixing apparatus 11 is connected to the pipe. An extension pipe installation method characterized in that the extension pipe fixing device and the extension pipe are fixed and fixed in the pipe line, which are drawn back into the manhole from the road, and removed and collected one by one in the manhole .

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