JP6358598B2 - Water stop method and set - Google Patents

Description

  The present invention relates to a water stopping method and a water stopping device set, and more particularly to a water stopping device in which a water stopping piece can be easily inserted and water can be stopped easily even when a work area near the entrance of a deep hole into which the water stopping piece is inserted is narrow. The present invention relates to a water method and a water stop tool set.

Conventionally, a water stop piece has been used to stop water from a water pipe or the like in a water break work for the water pipe or the like (see Patent Document 1). In using the water stop, the water stop is moved by attaching the water stop to the tips of the middle shaft handle and the outer shaft handle, moving the water stop to the water stop, and then rotating the center handle and outer shaft handle. The water can be easily stopped.
As an example where it is required to stop flooding in this way, for example, there is an aging survey of dam walls. In this investigation, a deep hole (for example, a diameter of 15 mm and a depth of 5 m) is formed from the outside of the wall toward the water storage side, and the deterioration of the wall is examined using a sensor or the like in the hole. Although it is desirable to provide this hole as far as possible, the water may enter from the tip of the hole if it is too close to the water storage side. For this purpose, a stopper is provided at the tip of the hole with a water stop. For this purpose, a water blocking piece is inserted into the tip of the hole using a long middle shaft handle and an outer shaft handle. However, when there is some structure near the entrance of the hole and the working area is narrow, the lengths of the middle shaft handle and the outer shaft handle are obstructive, so the water stop piece cannot be inserted into the hole.

Japanese Patent Laid-Open No. 5-171662

  The present invention has been made to solve the above-mentioned problems of the prior art, and even when the work area near the entrance of the hole for inserting the water stop piece is narrow, the water stop piece can be easily inserted. The water stop method and water stop tool set which can be performed are provided.

  The invention according to claim 1 is a first step of disposing a water stop piece, in which a middle shaft joint is attached to a screw tip and an outer shaft joint is attached to a nut part, in a hole for stopping water; and Adding and connecting the middle shaft joint and the outer shaft joint until reaching a predetermined depth in the hole, connecting the middle shaft handle to the middle shaft joint, a second step of further inserting the water stop piece into the hole, A third step of connecting an outer shaft handle to the outer shaft joint, inflating the elastic body of the water stop piece with the middle shaft handle and the outer shaft handle, and plugging the hole with the water stop piece; It relates to the water stop method.

  The invention according to claim 2 is the water stop tool set used in the water stop method according to claim 1, wherein the water stop piece that plugs the hole, the central shaft handle that turns the screw of the water stop piece, and the stop piece. An outer shaft handle for turning the nut portion of the water piece, a middle shaft joint for coupling the screw and the middle shaft handle, and an outer shaft joint for coupling the nut portion and the outer shaft handle. The present invention relates to a water-stopper set characterized by fitting a middle shaft joint.

  The invention according to claim 3 relates to the water stoppage set according to claim 2, wherein the middle shaft joint and the outer shaft joint are two or more pairs.

  The invention according to claim 4 is characterized in that a male screw or a female screw in the same screw direction as the screw tip portion of the screw tip is threaded at both ends of the central shaft joint. It relates to the water stop gear set.

  The invention according to claim 5 is fitted to both ends of the outer shaft joint to fit the nut portion of the water stop piece, the end portion of another outer shaft joint or the end portion of the outer shaft handle, and prevent mutual rotation. The water stop device set according to claim 2, wherein a joint portion is provided.

  According to the water stop method of the invention according to claim 1, since the intermediate shaft joint and the outer shaft joint are connected, even when the work area near the entrance of the hole for inserting the water stop piece is narrow, the water stop is easily stopped. A water piece can be inserted.

  According to the water stop device set of the invention according to claim 2, since the intermediate shaft joint and the outer shaft joint are provided, the water stop piece can be easily formed even when the work area near the entrance of the hole for inserting the water stop piece is narrow. Can be inserted.

  According to the water stop device set of the invention according to claim 3, since there are two or more pairs of the middle shaft joint and the outer shaft joint, the water stop piece can be surely inserted into the water stop portion even if the hole is deep.

  According to the waterstop set of the invention according to claim 4, the center shaft joint can be easily connected by rotating in the same direction.

  According to the water-stopper set of the invention which concerns on Claim 5, an outer shaft coupling can be connected easily.

It is a schematic side view of the water stop piece used for the water stop method which concerns on this embodiment. It is a schematic sectional drawing of the same water stop. (A) is a schematic side view of the center shaft joint of the water stop piece set used for the water stop method according to the present embodiment, (b) is a schematic side view of the outer shaft joint of the water stop piece set, (c) ) Is a schematic side view of the middle shaft handle of the water stop piece set, and (d) is a schematic side view of an outer shaft handle of the water piece set. It is the schematic sectional drawing of the side surface of the same water stop piece set, and the schematic sectional drawing of the direction perpendicular | vertical to an axis | shaft. (A) thru | or (e) are explanatory drawings of the water stop method which concerns on this embodiment. It is a figure of the use condition of the water stop method which concerns on this embodiment. (A) is a schematic sectional drawing which shows the joining state of the fitting parts of an outer shaft coupling, (b) is a schematic side view which shows the other joining state of the fitting parts of an outer shaft joint. It is a schematic perspective view of the fitting part of an outer shaft coupling. It is a fragmentary sectional view of the junction part of the fitting parts of an outer shaft coupling.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a water stopping method according to the invention will be described with reference to the drawings.
Initially, the water stop piece used for the water stop method of this embodiment is demonstrated with reference to FIG.
The still water piece 1 includes a cylindrical elastic body 11, a screw 12, a receiving plate 13, a washer 14, and a nut portion 15.
A through hole 11a is formed in the elastic body 11 along the central axis, and a screw 12 is inserted through the through hole 11a.
The screw 12 has a bolt shape and has a screw head 12a at one end, a screw main body portion 12b screwed at the center, and a screw direction opposite to the screw main body portion 12b at the other end. And a screw tip portion 12c having a diameter smaller than that of the screw main body portion 12b.
On both end faces of the elastic body 11, a receiving plate 13 and a washer 14 which are loosely fitted to the screw main body 12b are provided. A screw head 12a is adjacent to the outside of the receiving plate 13, a nut portion 15 is adjacent to the outside of the washer 14, and the nut portion 15 is screwed with the screw main body portion 12b.
The elastic body 11 is compressed in the axial direction and expanded in the radial direction by rotating the screw 12 with respect to the nut portion 15 in the direction in which the screw head portion 12a approaches the nut portion 15 side (the arrow X direction in FIG. 2). . The hole can be plugged by inflating the water stop piece 1 inserted into the hole by this rotation.

  Next, the water stop tool set will be described with reference to FIG. The waterstop set includes a waterstop piece 1 that plugs a hole, an intermediate shaft handle 2 that rotates a screw 12 of the waterstop piece 1, an outer shaft handle 3 that turns a nut portion 15 of the waterstop piece 1, and a screw 12 An intermediate shaft joint 4 for connecting the intermediate shaft handle 2 and an outer shaft joint 5 for connecting the nut portion 15 and the outer shaft handle 3 are provided. The outer shaft joint 5 is fitted over the intermediate shaft joint 4.

  The middle shaft joint 4 is threaded with a male screw or a female screw in the same screw direction as the screw tip 12c at the tip of the screw 12 at both ends. For example, as shown in FIG. And has a male thread 42 at the other end. Further, the middle shaft joint 4 has a tightening portion 43 that is tightened by a spanner near both ends.

The outer shaft joint 5 is fitted with a nut portion 15 of the water stop piece 1, an end portion of another outer shaft joint 5 or an end portion of the outer shaft handle 3 at both ends, and a fitting portion that prevents mutual rotation. Is provided.
For example, as shown in FIG. 3B, the outer shaft joint 5 has a hexagonal shape in which the inner peripheral surface of the fitting portion 51 a at one end is fitted with the nut portion 15 of the water blocking piece 1. The fitting portion 51b at the other end has a polygonal shape such as a hexagonal outer peripheral surface. The fitting portions 51a and 51b of the outer shaft joint 5 have the inner diameter of the fitting portion 51a larger than the outer diameter of the fitting portion 51b, and can connect the outer shaft joints 5 to each other. And is shaped to prevent mutual rotation.
Further, the inner diameter of the outer shaft joint 5 is large enough to allow the middle shaft joint 4 to be inserted.
The middle shaft joint 4 and the outer shaft joint 5 are a pair, and the water stop tool set has the number of logarithms necessary to reach the position where the water stop piece 1 stops.

  As shown in FIG. 3C, the middle shaft handle 2 is a screw whose end is screwed with the middle shaft joint 4. Further, as shown in FIG. 3D, the outer shaft handle 3 has a polygonal shape in which the end portion is fitted with the outer shaft joint 5. The inner diameter of the outer shaft handle 3 is large enough to allow the middle shaft handle 2 to be inserted.

FIG. 4 shows a schematic diagram of a water stop device set in which the water stop piece 1 is attached with the middle shaft joint 4, the outer shaft joint 5, the middle shaft handle 2 and the outer shaft handle 3. In FIG. 4, the still water piece 1 is inserted into the pipe K. In FIG. 4, each cross section in the position of AD in the figure is shown.
In this waterstop set, when the outer shaft handle 3 is fixed and the middle shaft handle 2 is rotated in the direction of the arrow X, the screw head 12a and the nut portion 15 approach each other and the elastic body 11 is compressed in the axial direction. Inflates in the direction. As a result, the tube K is stopped.

Next, with reference to FIG. 5, the water stop method of this embodiment which uses the water stop tool set mentioned above and stops water also in the work area near the entrance of the hole which inserts a water stop piece is narrow is demonstrated.
The water stop method of the present embodiment includes a first step of disposing a water stop piece 1 in which the middle shaft joint 4 is attached to the screw tip portion 12c and the outer shaft joint 5 is attached to the nut portion 15 in the water stop hole. A second step of additionally connecting the intermediate shaft joint 4 and the outer shaft joint 5 until the water stop piece 1 reaches a predetermined depth in the hole, and further inserting the water stop piece 1 into the hole; A third step in which the middle shaft handle 2 is connected to the outer shaft joint 5 and the outer shaft handle 3 is connected to the outer shaft joint 5 to expand the elastic body 11 of the water blocking piece 1 by the middle shaft handle 2 and the outer shaft handle 3.

  In the first step, the female screw 41 of the center shaft joint 4 is screwed and attached to the screw tip 12c of the water stop piece 1 (see FIG. 5A), and the outer shaft joint 5 is attached to the nut portion 15 of the water stop piece 1. The fitting part 51 is fitted and attached, and the water stop piece 1 is disposed in the hole (see FIG. 5B).

In the second step, the intermediate shaft joint 4 is further attached to the intermediate shaft joint 4 attached to the water blocking piece 1 (see FIG. 5C). At the time of attachment, the tightening portion 43 of each of the middle shaft joints 4 is tightened with a spanner. At this time, the length of the outer shaft joint 5 that is attached first is adjusted so that the tightening portion 43 of the middle shaft joint 4 that is attached first comes out and can be engaged with a spanner.
When the middle shaft joint 4 is connected, the outer shaft joint 5 is connected (see FIG. 5D).
In this way, the middle shaft joint 4 and the outer shaft joint 5 are connected until the water stop piece 1 reaches the position where the water stops. In addition, when the water stop piece 1 reaches the position where water stops in the first step, the second step may not be performed.

  In the third step, the middle shaft handle 2 is connected to the middle shaft joint 4, the outer shaft handle 3 is connected to the outer shaft joint 5, the outer shaft handle 3 is fixed, and the middle shaft handle 2 is rotated in the direction of the arrow X. The elastic body 11 is expanded to stop water. FIG. 6 shows a situation where water is stopped in a deep hole opened in the dam wall by the water stop method of the present embodiment.

In order to remove the intermediate shaft joint 4 and the like from the water stop piece 1 after the water has stopped, the intermediate shaft handle 2 is rotated in the direction opposite to the arrow X and removed. After the middle shaft joint 4 is detached from the water blocking piece 1, the middle shaft handle 2, the outer shaft handle 3, the middle shaft joint 4, and the outer shaft joint 5 are sequentially disassembled and removed. In order to remove the outer shaft joint 5, the connected outer shaft joint 5 must be pulled out to the entrance of the hole. At this time, the connection of the outer shaft joint 5 is disconnected and the outer shaft joint 5 is placed in the hole. There is a risk of leaving it behind. For this reason, in order to make it difficult to disengage the outer shaft joints 5 from each other, a structure in which the fitting portions 51 are engaged with each other by the pin P (see FIG. 7A) or a screw instead of the pin is used. It may be fixed with.
When the outer shaft joint 5 is a magnetic iron material, a magnet M may be attached around the end of one outer shaft joint 5 and joined to the other outer shaft joint 5 by a magnetic force. (Refer FIG.7 (b)).

Further, in order to prevent the connection of the outer shaft joint 5 from being disconnected, as shown in FIG. 8, the fitting is inserted inside the mating pipe to be connected within the fitting portion 51 of the outer shaft joint 5. You may make it utilize the level | step difference 53 of the polygon part and cylindrical part 52 in the joining part 51b. For example, as shown in FIG. 9A, a screw hole is made in the mating fitting portion 51a connected to the fitting portion 51b and a screw L1 is screwed in, so that the screw L1 engages with the step 53. It may be. If a set screw as shown in FIG. 9A is used for this screw L1, since there is no head, the water stop set can be used for a hole having a small diameter. The set screw preferably has a flat tip shape.
Further, as shown in FIG. 9B, a screw is cut inside the front end of the mating fitting portion 51a and a ring-shaped stopper L2 is screwed so that the stopper L2 engages with the step 53. Good.
Although not using the step 53, as shown in FIG. 9 (c), a screw hole is formed in the mating fitting portion 51a connected to the fitting portion 51b, and a screw L3 is screwed. You may make it stop the flat surface of the polygonal part of the fitting part 51b with the screw | thread L3. If a set screw like FIG.9 (c) is used for this screw L3, since there is no head, a water-stopper set can be used also for a hole with a small diameter. The set screw preferably has a sharp tip.

  In order to make it difficult to disengage the middle shaft joints 4 from each other, a washer may be inserted between the male screw and the female screw.

  According to the water stop method of the present embodiment, the middle shaft joint 4 and the outer shaft joint 5 are sequentially connected to the water stop piece 1 at the entrance to the hole, so that it is easy even when the work area near the entrance is narrow. A water stop can be inserted in

  The present invention is preferably used, for example, for investigating aging of dam walls.

DESCRIPTION OF SYMBOLS 1 Stop water piece 11 Elastic body 12 Screw 12c Screw tip 15 Nut part 2 Middle shaft handle 3 Outer shaft handle 4 Middle shaft joint 5 Outer shaft joint 51 Fitting part

Claims (5)

It is a set of water stop equipment used for water stop,
A water blocking piece that plugs the hole,
The water stop piece is composed of an elastic body, a screw and a nut portion,
A through hole is formed in the elastic body along a central axis, and the screw is inserted through the through hole,
The screw has a bolt shape, has a screw head at one end, has a screw main body threaded at the center, and is screwed at the other end in a screw direction opposite to the screw main body. The screw has a screw tip having a diameter smaller than that of the screw main body, and the nut portion is screwed with the screw main body,
The elastic body is configured to be compressed in the axial direction and expanded in the radial direction by rotating the screw with respect to the nut portion in a direction in which the screw head approaches the nut portion .
A male screw or a female screw in the same screw direction as the screw tip of the screw tip is threaded on both ends of the middle shaft joint,
And the center pole handle turning the threaded rod of the water stop piece,
And the outer shaft handle to turn the nut portion of the waterproofing piece,
The middle shaft coupling connecting the screw and the middle shaft handle;
An outer shaft coupling that connects the nut portion and the outer shaft handle;
The water stop device set, wherein the outer shaft joint is fitted over the middle shaft joint. It is a set of water stop equipment used for water stop,
A water blocking piece that plugs the hole,
The water stop piece is composed of an elastic body, a screw and a nut portion,
A through hole is formed in the elastic body along a central axis, and the screw is inserted through the through hole,
The screw has a bolt shape, has a screw head at one end, has a screw main body threaded at the center, and is screwed at the other end in a screw direction opposite to the screw main body. The screw has a screw tip having a diameter smaller than that of the screw main body, and the nut portion is screwed with the screw main body,
The elastic body is configured to be compressed in the axial direction and expanded in the radial direction by rotating the screw with respect to the nut portion in a direction in which the screw head approaches the nut portion.
At both ends of the outer shaft joint, the nut portion of the water stop piece, the end portion of the other outer shaft joint or the end portion of the outer shaft handle are provided, and a fitting portion that prevents mutual rotation is provided.
And the center pole handle turning the threaded rod of the water stop piece,
And the outer shaft handle to turn the nut portion of the waterproofing piece,
A middle shaft coupling connecting the screw and the middle shaft handle;
The outer shaft coupling connecting the nut portion and the outer shaft handle;
The water stop device set, wherein the outer shaft joint is fitted over the middle shaft joint.   The water stop device set according to claim 1 or 2, wherein the middle shaft joint and the outer shaft joint are two or more pairs. A water stop method using the water stop tool set according to claim 1,
The threaded杆先end the middle axle joint is attached to a first step of placing in the hole of the water stopping the water stopping piece that the outer joint to the nut portion is attached,
A second step of the waterproofing piece connects by adding said outer joint between the middle axle joint until it reaches a predetermined depth of the bore, further inserting the water stopping piece within said bore,
Connecting the center pole handle in the middle axle joint, connects the outer shaft handle to the outer shaft coupling, inflating the elastic body of the water stopping piece and the middle axle handle by said outer shaft handle, with the water stop piece A water stop method comprising a third step of plugging the hole. A water stop method using the water stop tool set according to claim 2,
The threaded杆先end the middle axle joint is attached to a first step of placing in the hole of the water stopping the water stopping piece that the outer joint to the nut portion is attached,
A second step of the waterproofing piece connects by adding said outer joint between the middle axle joint until it reaches a predetermined depth of the bore, further inserting the water stopping piece within said bore,
Connecting the center pole handle in the middle axle joint, connects the outer shaft handle to the outer shaft coupling, inflating the elastic body of the water stopping piece and the middle axle handle by said outer shaft handle, with the water stop piece A water stop method comprising a third step of plugging the hole.

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