JP6207021B2 - In-pipe damaged part sealing band attaching tool and in-pipe damaged part sealing band attaching method - Google Patents

Description

  In the present invention, in order to fix a damaged part in a pipe in a distribution pipe such as water supply or sewage or an industrial drain pipe, the wedge is fixed in the final process in order to fix the damaged part in the pipe. The present invention relates to an attachment for inserting and fixing and an attachment method using the attachment.

  Conventionally, repair parts and repair methods have been proposed to repair damaged parts in water pipes such as water and sewage or industrial drainage pipes, and various repair methods are used at construction sites. Has been.

  As one proposal for that purpose, the same applicant proposed an in-tube damaged portion sealing band (see, for example, Patent Document 1). If this sealing band is used, the repair work is simple and the labor of repair is not increased, and the workability is improved.

  That is, an in-tube damaged portion sealing band for repairing a damaged portion in the pipe was laid in a portion including the damaged portion on the inner surface of the tube, and wedge-shaped bands were attached to both ends of the band to closely contact the inner surface of the tube. An in-tube damaged portion sealing band for injecting a sealant and repairing the damaged portion is provided, and an in-tube damaged portion sealing method using the band.

Japanese Patent Application No. 2012-202980

  However, in such a method, when attaching wedges to both ends of the band in the circumferential direction and bringing them into intimate contact with the inner surface of the tube, it is necessary for the worker alone to install the wedge-shaped band in the final process. However, it is not easy, and it is necessary for a plurality of people to share work at the same time.

  Also, when attaching the wedge-shaped band, the wedge-shaped band was driven while hitting with a hammer or the like, so it was difficult to accurately fix the wedge-shaped band at the proper attachment position, ensuring work safety and stability. It was difficult.

  Under such circumstances, a repair tool that is easy to repair and does not require labor for repair, and that can be used to attach a wedge-shaped band of the band to the repaired part alone, and to ensure a proper mounting position, and A repair method is required.

  The present invention solves the above-described problems, and enables the attachment of a band to a repaired part by itself, and also ensures the safety of work and enables the attachment of a damaged part in a tube that can be attached to an accurate set position. It is an object of the present invention to provide a stopper band attachment tool and a method for attaching a damaged band sealing band in a tube.

  In order to achieve the above object, according to the first aspect of the present invention, in the in-pipe damaged part sealing band mounting tool for repairing a damaged part in the pipe, the sealing band is formed in a strip shape by a plurality of thin plates. The part formed by division and the both-side coupling part in the circumferential direction are constituted by a wedge-formed part, and the mounting tool is arranged so as to sandwich the cylindrical end of the sealing band and the wedge-shaped part in the middle. A fixed receiving portion facing the cylindrical end is formed on at least one end side, and a movable receiving portion facing the wedge-shaped portion is formed so as to be movable by a handle operation, and the fixed receiving portion of the fixture is Abutting one end of the sealing band in the cylindrical direction and holding the movable receiving portion against the wedge-shaped portion to sandwich the wedge-shaped portion, and operating the handle to bring the both receiving portions closer to each other. Characterized by being configured the wedge-shaped portion to be inserted into between the sealing band.

  According to a second aspect of the present invention, in the in-tube damaged portion sealing band attaching method using the in-tube damaged portion sealing band for repairing the damaged portion in the tube, the sealing band includes a plurality of thin plates. And a wedge-shaped portion formed between both ends of the sealing band in the circumferential direction is formed by a portion formed by dividing the belt into a band shape and a wedge-shaped portion at both sides in the circumferential direction. And a fixed receiving portion formed on the mounting portion is brought into contact with one end of the sealing band in the cylindrical direction, and the movable receiving portion is abutted against the wedge-shaped portion. In-pipe damaged portion sealing configured to sandwich the wedge-shaped portion and to insert the wedge-shaped portion between the sealing bands by moving the movable receiving portion toward the fixed receiving portion by operating the handle. Features a band attachment method .

  According to the first aspect of the present invention, the fixture has a fixed receiving portion formed at least on one end side so as to sandwich the both ends of the sealing band in the cylindrical direction and the wedge-shaped portion in the middle, and the movable receiving by the handle operation. The fixed receiving portion of the fixture is brought into contact with one end side in the cylindrical direction of the sealing band, and the movable receiving portion is brought into contact with the wedge-shaped portion. Since the configuration is such that the shape portion is sandwiched and the movable receiving portion is moved closer to the fixed receiving portion side by the handle operation and the wedge-shaped portion is inserted between the sealing bands, the operator is alone. In addition, the wedge-shaped part can be inserted between the sealing bands, and the installation work can be advanced to an appropriate position, and a damaged band sealing band mounting tool that can be attached to an appropriate setting position can be provided. .

  According to a second aspect of the present invention, the receiving portion formed on the fixture is brought into contact with one end side in the cylindrical direction of the sealing band, and the other is brought into contact with the wedge-shaped portion to thereby form the wedge shape. Since the wedge-shaped portion is inserted between the sealing bands by sandwiching the portion and making the both receiving portions approach by the handle operation, the wedge-shaped portion is sealed by the operator alone. It can be inserted between them, and an in-tube damaged portion sealing band attaching method for easily repairing an in-tube damaged portion can be provided.

It is a perspective view which shows the structure of the damage part sealing band in a pipe | tube to which this invention is applied. It is a perspective view which shows arrangement | positioning in the pipe | tube of the damage part sealing band in pipe | tube with which this invention is applied. It is a perspective view before the construction which installed the wedge attachment tool of the damage part sealing band in a pipe | tube which shows one Embodiment of this invention. It is detailed explanatory drawing of the wedge attachment tool of the damage part sealing band in a tube which shows one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the whole structure of the damaged part sealing band used for this invention is demonstrated. FIG. 1 is a perspective view showing an overall configuration of a damaged-portion sealing band in a tube to which the present invention is applied. The damaged-band sealing band 22, 23, 24 and a driving wedge 25 are included. By inserting between the stop bands 22 and 24, the damaged portion sealing bands 22, 23, and 24 can be brought into close contact with the inner wall surface of the tube to seal the damaged portion 21 a in the tube. Between the damaged portion sealing bands 22, 23, 24 and the driving wedge 25, a coupling portion is formed such that one is a concave portion and the other is a convex portion.

  Specifically, FIG. 1 shows an example in which the damaged portion sealing band 22 has a concave portion 22a, the damaged portion sealing band 24 has a concave portion 24a, and the driving wedge 25 has convex portions 25c and 25c on both sides. The convex portions 25c and 25c are fitted into the concave portion 22a of the damaged portion sealing band 22 and the concave portion 24a of the damaged portion sealing band 24, and the entire damaged portion sealing band is connected to form the damaged portion sealing band in the tube. Configure the whole.

  In the present invention, there is a case where a water leak or a partial defect of the joint portion such as the existing drain pipe 21 shown in FIG. 2 may occur, and this work is easy when the damaged portion 21a needs to be repaired. In order to achieve this, the operator can easily drive the driving wedge 25 into the gap by itself and set it at an appropriate position.

  FIG. 2 shows a preferable state for disposing a damaged portion sealing band when applying the damaged portion sealing band attachment tool of the present invention. That is, the damaged portion sealing bands 22, 23, 24 are connected to the inside of the existing drain pipe 21, etc., and the driving wedge 25 is inserted between the damaged portion sealing bands 22 and 24 from the narrow portion 25a side. Arranged so that.

  When the driving wedge 25 is driven, the driving wedge 25 is inserted into the gap 28 from the narrow width portion 25a as described above from one wide-mouthed portion in the cylindrical direction to the other narrow-mouthed portion, and then, as shown in FIG. The mounting tool G shown in FIG. 5 is installed in the portion, but the inclination angle of the driving wedge 25 is preferably set to 8 to 9 °.

  Here, the attachment G which is the main part of the present invention for installing the driving wedge 25 at an appropriate position will be described in detail with reference to FIG. The fixture G has claw support portions 30 a, 30 b, 30 c, 30 d formed at both ends of the base 30, and fixed claws 31 a, 31 b, 31 c, 31 d that protrude upward are respectively connected to the base 30. It is formed to be fixed integrally.

  In addition, a shaft 32 is pivotally held at the base 30 at substantially the center of the base 30, and a feed screw 32a is formed in a range excluding the holding portion. A hexagonal hole 32b into which a hexagonal wrench or a handle or the like is inserted is formed in the axial direction on both end surfaces of the shaft 32 to turn the shaft 32.

  The feed screw 32a is formed with a movable claw 33a that is fitted with the claw holding portion 33 and protrudes upward. When the shaft 32 is turned, the claw holding portion 33 is fitted to the shaft 32. Therefore, the claw holding portion 33 is moved in the axial direction along the feed screw 32a, and the movable claw 33a protruding upward is thereby moved. It can move back and forth. When the shaft 32 is turned, the claw holding portion 33 is moved in the axial direction by the feed screw 32a. At this time, the leader guide fixed to the base 30 is moved so that the claw holding portion 33 moves without turning. 34a and 34b are provided.

  Here, the shape of each front-end | tip part of fixed nail | claw 31a, 31b, 31c, 31d and the movable nail | claw 33a is comprised by the circular shape along inner diameters, such as the drain pipe 21 grade | etc.,. And the fixed nail | claw 31 and the movable nail | claw 33 comprise the receiving part in a cylindrical-axis direction, when each contact | abuts to the band 22,23,24,25. In addition, a # -shaped cut groove is formed on the inner side of the fixed claws 31a, 31b, 31c, 31d and on both sides of the movable claw 33a so that slippage hardly occurs on the contact surfaces with the bands 22, 23, 24 and the fixed claws 31. 35 or roughening the surface.

  Next, the operation method of the fixture G will be described. After the driving wedge 25 is inserted into the gap 28 from the narrow width portion 25a as shown in FIG. 3, the fixture G is turned upside down from the state of FIG. It is installed in the part. For example, the fixed claws 30 c and 30 d are brought into contact with the back side of the bands 22 and 24, and the movable claw 33 a is driven into contact with the front side 25 b of the wedge 25.

  Subsequently, when a hexagon wrench or a handle or the like is inserted into the hexagonal hole 32b at one end of the shaft 32 in the fixture G and the shaft 32 is pivoted, the feed screw 32a is pivoted, so that the claw holder is fitted thereto. 33 is moved along the feed screw 32a in the axial direction of the repair pipe, that is, in the left rear direction in FIG. As a result, the movable claw 33a projecting downward moves in the front-rear direction and pushes the front side 25b of the driving wedge 25, and the driving wedge 25 is inserted into the gap 28 and installed at the normal set position.

  In this manner, the driving wedge 25 is inserted into the gap 28 between the sealing bands 22 and 24, whereby the sealing bands 22, 23, and 24 are brought into close contact with the inner surface of the drain pipe 21 and the like. A lock lever 29 is provided to prevent the feed screw 32a from being loosened inadvertently after the driving wedge 25 is installed at the proper setting position. The feed screw 32a is forcibly tightened by a screw formed in a direction orthogonal to the feed screw 32a.

  In this way, after the driving wedge 25 is inserted into the gap 28 between the sealing bands 22, 24, as described in Japanese Patent Application No. 2012-202980, which is related to the same applicant, the adhesive is not described in detail. And the damaged portion sealing bands 22, 23 and 24 and the driving wedge 25 are securely fixed to the inner surface of the drain pipe 21 and the like. Thereafter, the handle G of the lock lever 29 is turned in the opposite direction to that in the case of attachment, and the attachment tool G is removed. Therefore, in such a state, a damaged portion generated on the inner surface of the drain pipe 21 or the like can be completely sealed to repair inconvenience such as water leakage.

  In the above description of the embodiment, the mounting method of the fixture G is such that, after the driving wedge 25 is inserted into the gap formed between the bands 22 and 24, for example, the fixing claws 30c and 30d are moved as shown in FIG. The case where the movable claw 33a is brought into contact with the lower side 25b of the driving wedge 25 in FIG. 5A has been described. However, the fixture G is installed in the opposite direction, the fixed claws 30a and 30b are brought into contact with the upper side of the bands 22 and 24 in FIG. 4A, and the movable claw 33a is driven in the driving wedge 25 in FIG. 5A. In the same manner as described above, the movable claw 33a moves in the front-rear direction and pushes the lower side 25b of the driving wedge 25 so that the driving wedge 25 is inserted into the gap 28 and is properly It can also be installed at a set position.

  In addition, with the same arrangement as the description of the installation method of the mounting tool G in the above embodiment, the fixed claws 30a and 30b are brought into contact with the lower side of the bands 22 and 24 in FIG. When contacting the upper side 25a of the driving wedge 25 in FIG. 5 (a), inserting a hexagon wrench or handle into the hexagonal holes 32b at both ends of the shaft 32, and turning the shaft 32 in the opposite direction to that described above, Since the feed screw 32a is turned in the reverse direction, the claw holding portion 33 fitted to the feed screw 32a is moved along the feed screw 32a in the reverse axial direction of the repair pipe. Accordingly, the movable claw 33 a protruding upward moves in the front-rear direction and pushes the upper side 25 a of the driving wedge 25, so that the driving wedge 25 can be pulled out from the set position in the gap 28.

  In addition, this invention is not limited to the said embodiment, Embodiment can be changed suitably and implemented within the range of the technical idea of this invention.

21; Existing drain pipes 22, 23, 24; Damaged part sealing band 25; Driving wedge 28; Gap 30; Base 31; Fixed claw (fixed receiving part)
32; shaft 33; movable claw (movable receiving part)
G: Mounting tool

Claims (2)

In the fitting part of the damaged part sealing band in the pipe for repairing the damaged part in the pipe,
The sealing band is composed of a portion formed by dividing a plurality of thin plates into a strip shape and a circumferentially formed side coupling portion formed as a wedge,
The attachment has at least one end formed on a side of the cylindrical portion of the sealing band so as to sandwich the cylindrical end of the sealing band and the wedge-shaped portion, and the wedge-shaped portion is operated by a handle. The movable receiving part that faces is configured to be movable,
The fixed receiving portion of the mounting tool is brought into contact with one end in the cylindrical direction of the sealing band and the movable receiving portion is brought into contact with the wedge-shaped portion to sandwich the wedge-shaped portion,
An in-tube damaged portion sealing band mounting tool configured to insert the wedge-shaped portion between the sealing bands by bringing the receiving portions close to each other by the handle operation. In the attachment method of the damaged portion sealing band in the tube using the damaged portion sealing band in the tube for repairing the damaged portion in the tube,
The sealing band is composed of a portion formed by dividing a plurality of thin plates into a belt shape and a portion where wedges are formed on both sides in the circumferential direction,
A fitting for coupling a wedge-shaped portion formed between both ends of the sealing band in the circumferential direction between the ends of the sealing band in the circumferential direction;
The fixed receiving portion formed on the mounting tool is brought into contact with one end in the cylindrical direction of the sealing band, and the movable receiving portion is brought into contact with the wedge-shaped portion to sandwich the wedge-shaped portion,
An in-tube damaged part sealing band attaching method, wherein the movable receiving part is moved closer to the fixed receiving part by the handle operation and the wedge-shaped part is inserted between the sealing bands.

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