JPH071585A - Sewer repairing method and machine - Google Patents

Abstract

PURPOSE:To accurately and efficiently repair a drilling position by bonding FRP to the connection part of a sewer and a branch pipe from the inside of the sewer inclusive of the opening end part of the branch part to cover the connection part and inserting a flexible shaft having a drilling blade provided to the leading end thereof in the branch pipe from the surface of the ground to rotate the same to drill the sewer from the inside of the branch pipe. CONSTITUTION:FRP is boded to the connection part of a sewer 1 and branch pipe 2 from the inside of the sewer inclusive of the opening end part of the branch pipe 2 to cover the connection part. The upper end of the branch pipe 2 is connected to the drain measure 7 to which a drain pipe 8 allowing the water discharged from a home to flow is connected. After the FRP coating 5 is cured, a flexible shaft 3 having a drilling blade 4 provided to the leading end thereof is inserted in the branch pipe 2 from the surface of the ground through the drain measure 7 and the rotation of the other end of the flexible shaft 3 due to an electromotor 6 is transmitted to the drilling blade 4 through the flexible shaft 3. The drilling blade 4 comes into contact with the FRP coating 5 to rotate to drill the FRP coating 5 bonded to the sewer 1 from the inside thereof.

Description

Description: BACKGROUND OF THE INVENTION [0001] The present invention relates to a reinforced plastic (hereinafter, referred to as FRP) coated from the inside of a sewer pipe when repairing a connecting portion between a buried sewer pipe and a branch pipe. The opening end of the branch pipe blocked by the) is rotated by the rotation transmission method by the flexible shaft to rotate the piercing blade at the tip, and the sewer pipe repairing method is used to pierce from the inside of the branch pipe and the sewer pipe used for the method. Regarding repair machinery. [0002] [Prior Art] Conventionally, when repairing a connecting portion between a buried sewer pipe and a branch pipe for inflowing domestic wastewater so that groundwater is not flooded or leaked, a human body can enter and exit the sewer pipe. Since it is thick, first, FRP is attached from the inner side of the sewer pipe or FRP molded plate is attached, and the connecting portion including the open end portion of the branch pipe is covered with a thickness of 2 to 3 mm, and a crack night gap is formed. Waterproof coating. Next, after the FRP is hardened, the open end of the branch pipe closed by the FRP coating is perforated from the inside of the sewer pipe by using a manual perforation tool or the like, and the branch pipe and the sewer pipe are circulated to be restored. [0003] [Problems to be solved by the invention] In the conventional drainage pipe repairing method, as described above, all of the FRP coating and perforation after FRP curing are performed manually from the inside of the drainage pipe. Although the thickness of the sewer pipe allows the human body to go in and out, it is not the thickness that can carry in the work machine, so there are restrictions on the carry-in machine and it is often difficult to connect to the power supply, so drilling work Was done by hand tools in a narrow tube. [0004] Therefore, even if the FRP is easily attached,
Accurate confirmation of the open end position of the branch pipe closed by the FRP coating and perforation work at that position are extremely inefficient, and there is a problem that re- repair due to displacement of the perforation position occurs. [Means for Solving the Problems] The sewer pipe repairing method according to the present invention can efficiently and accurately repair the drilling work associated with the repair of the connection between the sewer pipe and the branch pipe from the ground. The sewage pipe repairing machine is a dedicated repairing machine that can accurately perform its construction method. [0006] That is, from the inside of the sewage pipe, including the opening end of the branch pipe, to the connecting portion of the buried sewer pipe and the branch pipe,
After the RP is attached and covered, and after the FRP is hardened, a flexible shaft with a piercing blade attached to the tip is inserted into the inside of the branch pipe from the ground and rotated to close the open end of the branch pipe.
The sewage pipe repairing method is characterized in that the RP coating is perforated from the inside of the branch pipe. [0007] Further, for use in the above-mentioned construction method, the perforating blade mounted on the tip of the flexible shaft rotated by the above-mentioned prime mover has a bottomed cylindrical shape to eliminate the outer corner portion of the circular bottom, and the opening end side. While inclining the outer wall of the
Forming multiple notches at intervals on the side wall, installing cutting blades on the outside of each notch, and installing multiple cutting blades at intervals on the inside of the circular bottom surface. It is a characteristic sewer pipe repair machine. [Operation] The operation of the present invention will be described with reference to FIG. The FRP including the open end of the branch pipe 2 is attached and covered on the buried connecting portion between the sewer pipe 1 and the branch 2. After curing the FRP,
When the flexible shaft 3 provided with a bottomed cylindrical perforating blade 4 at the tip is inserted into the inside of the branch pipe 2 from the ground and brought into contact with the FRP coating 5 to rotate, the opening end of the branch pipe 2 is closed. The FRP coating 5 formed is perforated by the perforating blade 4 from the side of the branch pipe 2. [0009] In the piercing blade 4 having a bottomed cylindrical shape, the circular bottom outer corner portion 4a is deleted, and the outer wall 4b on the opening end side is inclined inward. 4 can be inserted and removed smoothly. Further, since the plurality of cutout portions 9 are formed on the side wall and the cutting blade 10 is mounted on the outer side wall of the inclined opening end portion of the cutout portion 9, the friction during rotation is reduced and the efficiency is improved. Perforate the FRP coating 5. Even if the drilling direction is out of the center of the circle, the cutting blade 11 mounted on the inner surface of the circular bottom surface cuts the cut part of the FRP coating 5 that obliquely abuts during rotation and completely drills it. . FRP cut off
The disc piece of the cover 5 fits into the punching blade 4 and can be easily taken out by utilizing the notch 9. [Embodiment] The sewer repair method and the sewer repair machine according to the present invention will be described with reference to the embodiment shown in FIG. FRP is attached to the connection portion of the sewer pipe 1 and the branch pipe 2 which is buried underground from the inside of the sewer pipe 1 including the open end portion of the branch pipe 2 to cover it. On the other hand, the upper end of the branch pipe 2 is connected to a drainage mass 7 to which a drainage pipe 8 for flowing drainage from a home is connected. [0011] After the FRP coating 5 is hardened, the flexible shaft 3 having the piercing blade 4 attached to the tip thereof is inserted from the ground into the branch pipe 2 through the drainage mass 7. The other end of the flexible shaft 3 is connected to a prime mover 6 on the ground, and the rotation of the prime mover 6 is transmitted to the piercing blade 4 at the tip via the flexible shaft 3. Perforating blade 4 inserted in the branch pipe 2
Is rotated by bringing the open end of the branch pipe 2 into contact with the closed FRP coating 5 and sticking it from the inside of the sewer pipe 1.
Perforate the coating 5. [0012] As shown in FIGS. 2 and 3, the piercing blade 4 has a cylindrical shape with a bottom to eliminate the outer bottom corners 4a of the bottom and to incline the outer wall 4b at the opening end. The piercing blade 4 can be smoothly inserted or removed from the branch pipe 2. In addition, a plurality of cutout portions 9 are formed on the side wall at intervals, and a cutting blade 10 is provided on the outer peripheral side of the inclined portion of each cutout portion 9, and further, on the inner surface of the circular bottom surface during drilling. Since a plurality of cutting blades 11 for cutting off the portion of the FRP coating 5 in the middle of cutting that abuts the bottom surface and interferes with perforation are installed at intervals, the closed FRP coating 5 can be cut for a short time. To drill efficiently. [Effect of the Invention] In the sewer repair method according to the present invention, the rotation transmission by the flexible shaft is used to attach the inside of the sewer pipe for waterproofing and close the open end of the branch pipe. By piercing the coating from the inside of the branch pipe, the piercing position is accurate and the efficiency of repair work is improved. Further, the sewer pipe repair machine according to the present invention for use in the sewer pipe repairing method has a smooth insertion and removal of the piercing blade and the flexible shaft, and the branch pipes are connected in a direction deviating from the center of the sewer pipe. Can also be drilled accurately at the opening position, FR
The cut-out portion of the P coating is fitted to the punching blade and can be extracted together with the punching blade. [0014] Further, the present invention provides a conventional vinyl chloride pipe when the sewer pipe is a concrete humor pipe or a ceramic pipe that has been conventionally used, but the joint portion of the sewer pipe and the branch pipe is covered with FRP for repair. The same applies to, and the perforating blade is also effective as a finishing blade for the perforated portion of the sewer pipe of the various materials described above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing an embodiment of a sewage repairing method and a sewage repairing machine according to the present invention. FIG. 2 is a partially cutaway front view of the piercing blade of the sewage repair machine according to the present invention. FIG. 3 is a plan view of a punching blade of the sewage repairing machine according to the present invention. [Explanation of Codes] 1 Sewage pipe 2 Branch pipe 3 Flexible shaft 4 Drilling blade 4a Round bottom outside corner 4b Outer sidewall 5 FRP coating 6 Motor 7 Drainage mass 8 Drainage pipe 9 Notch portion 10 Cutting blade 11 Cutting blade

Claims (1)

Claims [Claim 1] FRP including the opening end of the branch pipe from the inside of the sewer pipe in the connecting portion of the buried sewer pipe and the branch pipe.
(Reinforced plastic) is attached and covered, and a flexible shaft with a piercing blade attached to the tip is inserted into the branch pipe from the ground and rotated to close the open end of the branch pipe.
A sewer repair method characterized by piercing the RP coating from the inside of the branch pipe. [Claim 2] A piercing blade having a bottomed cylindrical shape is attached to the tip of a flexible shaft that is inserted into a branch pipe that is connected to an embedded sewer pipe and that is rotated by a prime mover on the ground. The blade removes the outer corner of the circular bottom, inclines the outer wall on the open end side inward, forms a plurality of cutout portions at intervals on the side wall, and cuts the outer peripheral side of each cutout portion. And a plurality of cutting blades are installed on the inner side of the circular bottom surface at intervals to provide a sewer repairing machine.