JP5904486B2 - Water shut-off device for cable pipe opening - Google Patents

Description

  The present invention relates to a water stop device for a cable pipe opening, in which a cable is laid in the pipe and the pipe opening of the pipe is stopped.

  2. Description of the Related Art Conventionally, a water stop device for a cable pipe opening that uses a cable laid in the pipe and stops the pipe opening of the pipe has been used.

  As a water shutoff device for this type of cable pipe opening, a rubber seal block body that is inserted and supported in an insertion hole in a state where the cables are sealed with water and inserted into the cable conduit is used as this seal block. A cable conduit waterproofing device that is clamped with clamping bolts and nuts via a clamping board placed before and after the body, and the seal block body is divided into at least two at right angles to the insertion direction. There has been one in which the rubber hardness of one seal block body is different from the rubber hardness of the other seal block body (for example, Patent Document 1). This seal block body has an insertion hole from the outside, and an open cut portion and a connection cut portion for connecting the respective through holes. The positions of these open cut portions and the connection cut portions are set to the front and rear. It was made to differ from each position of the open cut part of another seal block body, and a connection cut part.

JP 2006-158057 A

In the conventional cable conduit waterproofing device, the thickness width of the seal block body having a high rubber hardness divided perpendicular to the insertion direction is narrower than the thickness width of the seal block body having a soft rubber hardness adjacent thereto. This is to increase the inner surface of the pipe and the contact surface with the cable, and does not correspond to the thermal expansion and contraction specific to the cable. As a result, when the cable expands and contracts by heat and moves in the longitudinal direction in the insertion hole, the portion of the soft seal block body that contacts the cable conduit collides with the soft seal block body adjacent to the adjacent hard seal block body. As a result, the peripheral surface (circumferential portion) of the soft seal block body is damaged, and water leaks from the periphery of the seal block body (see FIG. 11). Here, FIG. 11 is a figure which shows the deformation | transformation state of the conventional soft right-angle division | segmentation seal block body when a cable expands and contracts thermally.

  The present invention has been made in view of the above problems, and even if the cable is thermally expanded and contracted and moves in the longitudinal direction in the insertion hole, water leakage from the periphery of the seal block body is eliminated, and the pipeline in which the cable is laid An object of the present invention is to provide a water stopping device for a cable pipe opening that can stop the pipe opening.

In order to solve the above-described problems and achieve the above-described object, the first aspect of the present invention is a cable pipe opening for a cable in which a cable is laid in the pipe and the pipe opening of the pipe is stopped. The water stop device is provided with a block body cable insertion hole through which a cable is inserted and a block body bolt insertion hole through which a tightening bolt is inserted. The block body bolt insertion hole is divided into at least three at a predetermined thickness width in a direction perpendicular to the insertion direction. Rubber seal block body placed in the pipeline in the state of being closed, and a tightening board cable insertion hole through which the cable is inserted and a fastening board bolt insertion hole through which the cable is inserted. anda board tightening provided with sealing block body, the insertion direction and the rubber hardness of the direction perpendicular to the divided right angle divided seal block body perpendicular dividing seal block bodies adjacent each Harder than the rubber hardness of a right split seal block of adjacent, soft and are arranged alternately, perpendicularly split seal block rubber hardness than body harder rigid angle split seal block body rubber hardness soft 軟直angle adjacent the thickness width of the adjacent by larger than the thickness width of the split seal block body, hardly collide with the 軟直angle split seal block of further neighboring 軟直angle divided cable on the contact portion of the seal block body next rigid angle split seal block body, The peripheral surface of the soft right-angle split seal block body is not damaged, and water leakage from the periphery of the seal block body can be eliminated.

The rubber hardness of the seal block body hard, soft and tightened respectively with the clamping plate in a state of being arranged alternately, 軟直angle split seal block body expands larger than the radially rigid angle split seal block body. In this state, when the cable is thermally expanded and contracted and moved in the longitudinal direction in the insertion hole, the soft right-angle split seal block body also moves along with the movement of the cable, and comes into contact with the cable of the soft right-angle split seal block body . portion so that the peripheral surface of 軟直angle split seal block body by impinging on 軟直angle split seal block body further neighboring rigid angle split seal block body next (circumference portion) from being damaged. According to the present invention, since the thickness width of the hard right-angled divided seal block body is larger than the thickness width of the adjacent soft seal block, even if the cable is thermally expanded and contracted and moved in the longitudinal direction in the insertion hole, 軟直angle split seal block body cable contact portions of hardly collide more 軟直angle split seal block body next to the rigid angle split seal block of neighboring without peripheral surface of 軟直angle split seal block body is wounded The water leakage from the periphery of the seal block body can be eliminated. Thereby, the water stop effect of a seal block body can be improved.

According to a second aspect of the present invention, there is provided a water shutoff device for a cable conduit opening according to the first aspect, wherein the seal block body and the clamping board are each divided into two or more in the insertion direction. , rigid angle split seal block body and 軟直angle split seal block body is disposed in the dividing position by different line in the insertion direction, the insertion of the division position and the rigid angle split seal block body in the insertion direction of the clamping plate The direction division positions are made substantially the same, and are arranged in the pipeline.

According to the present invention, the dividing position in the insertion direction of the tightening disk and the dividing position in the insertion direction of the hard right angled divided seal block body are made substantially the same, so that the tightening force of the tightening disk is directly applied to the hard right angle divided seal block It can be transmitted to the body , and the tightening force of the clamping board can be efficiently transmitted to the hard right-angle split seal block body . Further, since the different dividing positions of the rigid angle split seal block body dividing position and 軟直angle split seal block body, the tightening force of the rigid angle split seal block body is transmitted to 軟直angle split seal block of adjacent , Can be transmitted to the entire soft right-angle split seal block . Thereby, the stress distribution difference of the tightening force of 軟直angle split seals block body is reduced, thereby improving the waterproofing effect of the seal block body.

  According to a third aspect of the present invention, there is provided a water shut-off device for a cable conduit port according to the second aspect, wherein the clamping disk is divided into two divided clamping disks divided in the insertion direction. Two or more clamping board bolt insertion holes are provided, two or more clamping board bolt insertion holes are provided in the divided clamping board, and block body bolt insertion holes provided corresponding to these clamping board bolt insertion holes The seal block body is press-contacted through the tightening disc by inserting a tightening bolt into the base plate.

According to the present invention, two or more clamping board bolt insertion holes provided in the divided clamping board and the block bolt insertion holes provided corresponding to the clamping board bolt insertion holes are inserted into the clamping bolts. it makes the entire panel with split clamping can tell uniformly the clamping force of the clamping bolt, the stress distribution difference of the tightening force of 軟直angle split seals block body is further reduced, the water stopping effect of the seal block body Can be improved.

According to a fourth aspect of the present invention, there is provided a water shutoff device for a cable pipe port according to any one of the first to third aspects, wherein the hard right-angle split seal block body has a rubber hardness of approximately 70 degrees. at right angles split seal block body, 軟直angle split seal block body is characterized in that the rubber hardness is perpendicular split seal block of approximately 30 degrees.

According to the present invention, next to the hard deformed rubber hardness of 70 degrees substantially less rigid angle split seal block body, since the rubber hardness is arranged 軟直angle split seal block of substantially 30 degrees, 軟直angle division clamping force of the seal block body rigid angle split seal block body fastening panel by being fastened to the spread throughout 軟直angle split seal block body expands expanded in the radial direction in duct, duct circumference It is possible to strongly press the outer peripheral surface of the cable inserted into the surface and the block body cable insertion hole. Thereby, the water stop effect of a seal block body can be improved.

  As described above, according to the water shutoff device for a cable pipe opening of the present invention, even if the cable is thermally expanded and contracted and moves in the longitudinal direction in the insertion hole, water leakage from the periphery of the seal block body can be eliminated. It is possible to stop the water at the pipe opening of the pipe where the cable is laid.

It is the schematic which shows the installation condition of the water stop apparatus of the duct opening for cables in one Embodiment of this invention. It is a disassembled perspective view of the water stop apparatus of the conduit opening for cables in the 1st Embodiment of this invention. (A) It is a side view of the water stop apparatus of the pipe line opening for cables. (B) It is a front view of the water stop apparatus of the pipe line opening for the cables. It is a front view of the seal block body of the water stop apparatus of the pipe line opening for the cables. It is a partial cross section figure which shows the state which attached the water stop apparatus of the pipe line opening for the cables to the pipe line. (A) It is a figure which shows the state where the cable is not thermally expanded and contracted. (B) It is a figure which shows the deformation | transformation state of a soft right-angle division | segmentation seal block body when a cable cools and shrinks. (C) It is a figure which shows the deformation | transformation state of a soft right-angle division | segmentation seal block body when a cable is extended with heat. It is a disassembled perspective view of the water stop apparatus of the pipe-line opening for cables in the 2nd Embodiment of this invention. (A) It is a side view of the water stop apparatus of the pipe line opening for cables. (B) It is a front view of the water stop apparatus of the pipe line opening for the cables. It is a front view of the seal block body of the water stop apparatus of the pipe line opening for the cables. It is a partial cross section figure which shows the state which attached the water stop apparatus of the pipe line opening for the cables to the pipe line. It is a figure which shows the deformation | transformation state of the conventional soft right angle division | segmentation seal block body when a cable expands and contracts thermally.

  Hereinafter, an embodiment of a water stop device for a cable pipe port of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing a state of installation of a water stop device for a cable conduit port in one embodiment of the present invention.

  As shown in FIG. 1, a water stop device 1 for a cable pipe opening is configured such that a cable (electric wire) 3 is laid in a pipe 2 and the pipe opening 4 of the pipe 2 is stopped. Specifically, a manhole 5 (manhole) is provided at an appropriate length portion of the cable 3 laid in the conduit 2 buried in the ground. The opening of the conduit 2 to the manhole 5 is provided. This prevents water from entering the manhole 5 from the pipe opening 4 that is a part. Here, the cable connecting portion 34 is a member for connecting the left and right cables 3 in the manhole 5, and the thermal expansion / contraction absorbing portion 33 is a structure that absorbs thermal expansion / contraction of the cable 3 when the cable 3 is thermally expanded / contracted. It is.

  Next, the structure of the water stop device 1 for the cable conduit opening in the first embodiment of the present invention will be described. Here, FIG. 2 is an exploded perspective view of the water shut-off device for the cable conduit opening in the first embodiment of the present invention, and FIG. 3 (a) is a side view of the water shut-off device for the cable conduit opening. Fig. 3 (b) is a front view of the water stop device for the cable pipe opening, Fig. 4 is a front view of the seal block body of the water stop device for the cable pipe opening, and Fig. 5 is for the cable. It is a partial cross section figure which shows the state which attached the water stop apparatus of the pipe opening to the pipe line. Here, this embodiment demonstrates the water stop apparatus 1 of the cable pipe opening used for the single core power transmission cable (CV cable) which transmits electricity.

  As shown in FIG. 2, the water shutoff device 1 for the cable pipe opening includes a seal block body 6 (6 a, 6 b, 6 c, 6 d, 6 e), a tightening board 7 (7 a, 7 b), and a tightening bolt 8. And.

  The seal block body 6 is made of ethylene propylene rubber and is formed in a cylindrical shape. The block body cable insertion hole 9 through which the cable 3 such as a power transmission cable is inserted and the block body bolt insertion hole 10 through which the tightening bolt 8 is inserted. Each is provided (see FIG. 4). And it arrange | positions in the pipe line 2 in the state divided | segmented into five in the orthogonal direction with the insertion direction (direction along a pipe line direction) to the pipe line 2. FIG. In addition, in this embodiment, although arrange | positioned in the pipe line 2 in the state divided | segmented into five, not only this but a pipe | tube in the state divided | segmented into three or more (for example, three, seven, etc.) It may be arranged in the road 2. Here, the block body bolt insertion holes 10 provided in the seal block body 6 are formed at equal intervals in the circumferential direction of the seal block body 6.

The seal block body 6 has a soft right-angle split seal block body 6a with a rubber hardness of about 30 degrees, a hard right-angle split seal block body 6b with a rubber hardness of about 70 degrees, and a soft right-angle split seal block body 6c with a rubber hardness of about 30. The rubber hardness of the hard right-angled divided seal block body 6d is about 70 degrees, and the rubber hardness of the soft right-angled divided seal block body 6e is about 30 degrees, and the right-angled divided seal block bodies 6a, 6b, 6c, 6d, 6e are adjacent to each other. They are alternately arranged so as to be softer and softer than the rubber hardness (see FIG. 3A). In the present embodiment, 軟直angle split seal block body 6a of adjacent, 6c, a rubber hardness of a hard rigid angle split seal block body 6b from 6e, the rubber hardness of 6d and 70 ° approximately, next to the rigid angle split seal block body 6b, rubber hardness soft 軟直angle split seal block body 6a from 6d, 6c, although the rubber the hardness of 6e was approximately 30 degrees, not limited to this, 軟直angle split seal block body 6a, 6c, 6e rubber hardness If the rubber hardness is relatively soft, other rubber hardness may be used, and the rubber hardness of the hard right- angle split seal block bodies 6b, 6d may be other rubber hardness if the rubber hardness is relatively hard. Further, the rubber hardness of each of the hard right- angle divided seal block bodies 6b and 6d and each of the soft right-angle divided seal block bodies 6a, 6c, and 6e may be set to different rubber hardness.

Each of the soft right-angle split seal block bodies 6a, 6c and 6e and the hard right- angle split seal block bodies 6b and 6d are divided into two parts in the insertion direction, and each soft seal is combined with the divided seal block bodies. Right-angle divided seal block bodies 6a, 6c, 6e and hard right- angle divided seal block bodies 6b, 6d are configured (see FIG. 4). In this embodiment, the seal block body 6 is divided into two in the insertion direction. However, the present invention is not limited to this, and the seal block body 6 is divided into two or more (for example, three) in the insertion direction. If there is, the number of divisions does not matter. Further, in the seal block body 6, the thickness width of the hard right- angle split seal block bodies 6b and 6d is larger than the thickness width of the soft right-angle split seal block bodies 6a, 6c and 6e (see FIG. 3A).

  The clamping board 7 (front clamping board 7a, rear clamping board 7b) is made of MC nylon (registered trademark) obtained by polymerizing and molding nylon monomer under atmospheric pressure, and is formed into a cylindrical shape. Are respectively provided with a fastening board cable insertion hole 11 and four fastening board bolt insertion holes 12 through which the fastening bolts 8 are inserted (see FIG. 2). And the clamping board 7 is divided | segmented into two each in the insertion direction, and the clamping board 7 is comprised combining the divided | segmented clamping machine (refer FIG.3 (b)). Here, the fastening board bolt insertion holes 12 provided in the fastening board 7 are formed at equal intervals in the circumferential direction of the fastening board 7. Further, the pipe insertion preventing member 35 makes the outer periphery of the water stop device 1 for the cable pipe opening larger than the pipe 2 so that the water stop apparatus 1 for the cable pipe opening does not enter the back of the pipe 2. Is to do. In this embodiment, the clamping board 7 is divided into two in the insertion direction. However, the present invention is not limited to this, and the clamping board 7 is divided into two or more (for example, three) in the insertion direction. If there is, the number of divisions does not matter. In the present embodiment, each of the divided tightening machines is provided with four tightening machine bolt insertion holes 12, but this is not limiting, and each of the divided fastening machines has two or more fastening machine bolt insertion holes 12. The number of the fastening board bolt insertion holes 12 is not limited as long as it is provided.

The water shutoff device 1 for the cable conduit opening includes a tightening board cable insertion hole 11 of the rear rear fastening board 7b, a block body cable insertion hole 9 of the seal block body 6, and a fastening board of the front front fastening board 7a. The cables 3 are respectively inserted into the cable insertion holes 11, and then the tightening bolts 8 are respectively inserted into the block body bolt insertion holes 10 of the seal block body 6 and the tightening board bolt insertion holes 12 of the tightening board 7. The seal block body 6 is tightened by the attached board 7 (see FIG. 2). As a result, the soft right-angle split seal block bodies 6a, 6c, 6e are expanded and expanded in the radial direction by the tightening disc 7, and are strongly pressed against the inner peripheral surface of the pipe line 2 (see FIG. 5). In this embodiment, a screw hole is formed on the inner peripheral surface of the tightening board bolt insertion hole 12 of the tightening board 7 and tightened with the tightening bolt 8. However, the present invention is not limited to this. A screw hole may not be engraved on the inner peripheral surface of the hole 12 but may be tightened by a tightening bolt 8 and a nut (not shown).

As shown in FIG. 3 (a), the hard right- angle split seal block bodies 6b and 6d and the soft right-angle split seal block bodies 6a, 6c and 6e, which are each divided into two parts, are divided in the insertion direction. They are arranged in the pipeline 2 at different positions. Specifically, the block body bolt insertion hole 10 of the hard right- angled divided seal block bodies 6b and 6d and the block body bolt insertion hole 10 of the soft right-angled divided seal block bodies 6a, 6c and 6e are shifted one by one, and the pipeline 2 Is placed inside. The dividing position in the insertion direction of the tightening disc 7 and the dividing positions of the hard right- angle divided seal block bodies 6b and 6d are arranged in the pipe 2 so as to be substantially the same. As described above, since the dividing position in the inserting direction of the tightening disk 7 and the dividing position in the inserting direction of the hard right- angle divided seal block bodies 6b and 6d are substantially the same, the tightening force of the tightening disk 7 is directly hard perpendicular. It is transmitted to the divided seal block bodies 6b and 6d, and the tightening force of the clamping board 7 can be efficiently transmitted to the hard right angle divided seal block bodies 6b and 6d. Further, since the dividing position of the hard right- angled divided seal block bodies 6b, 6d and the divided position of the soft right-angled divided seal block bodies 6a, 6c, 6e are different, the tightening force of the hard right- angled divided seal block bodies 6b, 6d is 軟直angle split seal block body 6a of adjacent, 6c, and transmitted to 6e, it is possible to make 軟直angle split seal block body 6a, 6c, partial stress distribution in 6e does not occur. Thereby, the stress distribution difference of the clamping force in the soft right-angle split seal block bodies 6a, 6c, 6e is reduced, and the water stop effect of the seal block body 6 can be improved. Further, the fastening bolts 8 are inserted into the four fastening plate bolt insertion holes 12 and the block body bolt insertion holes 10 corresponding to the fastening plate bolt insertion holes 12 in the two divided fastening plates. By inserting, it is possible to transmit the tightening force of the tightening bolt 8 to the entire divided tightening disk 7 without causing partial stress distribution, and within the soft right angle divided seal block bodies 6a, 6c, 6e. The difference in stress distribution of the tightening force can be further reduced.

Next, referring to FIG. 6, the cable 3 is thermally expanded and contracted and moved in the longitudinal direction in the block body cable insertion hole 9 in a state where the seal block body 6 is tightened in the front-rear direction by the tightening bolts 8. explain. Here, FIG. 6A is a diagram illustrating a state where the cable is not thermally expanded and contracted, and FIG. 6B is a diagram illustrating a deformed state of the soft right-angle split seal block body when the cable is cooled and contracted. FIG. 6C is a diagram showing a deformed state of the soft right-angle split seal block body when the cable is extended by heat.

When the cable 3 is thermally expanded and contracted and moved in the longitudinal direction in the block cable insertion hole 9 in a state where the seal block body 6 is tightened in the front-rear direction by the tightening bolts 8, soft right-angle split seal block bodies 6a, 6c, 6e also moves as the cable 3 moves. In this case, the portions of the circumferential surfaces of the soft right-angle split seal block bodies 6a, 6c, 6e that are in contact with the cable 3 are dragged by the cable 3, and the outer circumference of the cable 3 and the circumference of the hard right-angle split seal block bodies 6b, 6d Get in between the faces. In this embodiment, the cable 3 by thermal expansion and contraction moves the block body cable insertion hole 9 in the longitudinal direction, 軟直angle split seal block body 6a, 6c, the circumferential surface of 6e is the outer peripheral surface of the cable 3 rigid angle split seal block body 6b, also entered between the circumferential surface of 6d, rigid angle split seal block body 6b, 軟直angle split seal block body 6a of adjacent its thickness width of 6d, 6c, and greater than the thickness width of 6e since it has, 軟直angle by neighboring rigid angle split seal block body 6b, further next 軟直angle split seal block body 6a of 6d, 6c, hardly collide with 6e, to each other 軟直angle split seal block body collides The peripheral surfaces of the divided seal block bodies 6a, 6c, 6e are not easily damaged. Thereby, water leakage from the periphery of the seal block body 6 can be prevented.

  Next, 2nd Embodiment of the water stop apparatus of the pipe-line opening for cables of this invention is described. FIG. 7 is an exploded perspective view of a water stop device for a cable pipe opening according to the second embodiment of the present invention, and FIG. 8 (a) is a side view of the water stop device for the cable pipe opening. (B) is a front view of the water stop device for the cable conduit opening, FIG. 9 is a front view of the seal block body of the water stop device for the cable conduit opening, and FIG. It is a partial cross section figure which shows the state which attached the water stop apparatus to the pipe line. Here, in the first embodiment, the water shut-off device 1 for a cable conduit opening used for, for example, a single-core power transmission cable (CV cable) that transmits electricity has been described, but in the second embodiment, electricity is transmitted. A water stop device 21 for a cable pipe opening used for a three-core power transmission cable (CVT cable) will be described. In the second embodiment, only parts different from the first embodiment will be described.

  The cable 23 is a three-core power transmission cable (CVT cable) in which three cables are twisted and integrated. The seal block body 26 is provided with a block body cable insertion hole 29 in which a hole is formed in the inner peripheral surface in accordance with the twist of the three-core cable 23 (see FIGS. 7 and 9), and tightening The board 27 (front fastening board 27a, rear fastening board 27b) is provided with a fastening board cable insertion hole 31 through which the three-core cable 23 is inserted (see FIGS. 7 and 8B). .

Then, the cables 23 are respectively inserted into the fastening board cable insertion holes 31 of the rear rear fastening board 27b, the block body cable insertion holes 29 of the seal block body 26, and the fastening board cable insertion holes 31 of the front front fastening board 27a. Then, the tightening bolt 8 is inserted into the block body bolt insertion hole 30 of the seal block body 26 and the tightening board bolt insertion hole 32 of the tightening board 27, respectively. It is tightened (see FIG. 7). A core material (not shown) is sandwiched in the gap at the center of the three-core cable 23 to prevent water leakage from the gap between the three-core cable 23 (see FIG. 8B). As a result, the soft right-angle split seal block bodies 26a, 26c, and 26e are expanded and expanded in the radial direction by the tightening disk 27, and are strongly pressed against the inner peripheral surface of the pipe line 2 (see FIG. 10). Also in the water stop device 21 of the cable pipe opening configured as described above, the same operational effects as those of the first embodiment are exhibited.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Water stop device of cable pipe opening 2 Pipe 3 Cable 4 Pipe opening 5 Manhole 6 Seal block body 7 Tightening board 8 Tightening bolt 9 Block body cable insertion hole 10 Block body bolt insertion hole 11 Tightening board cable insertion hole 12 Clamping board bolt insertion hole 21 Water shutoff device 23 for cable conduit port Cable 26 Seal block body 27 Clamping board 29 Block body cable insertion hole 30 Block body bolt insertion hole 31 Clamping board cable insertion hole 32 Clamping board bolt Insertion hole 33 Thermal expansion / contraction absorption part 34 Cable connection part 35 Pipe insertion prevention member

Claims (4)

A water shut-off device for a cable pipe opening, in which a cable is laid in the pipe and stops the pipe opening of the pipe,
A block body cable insertion hole for inserting a cable and a block body bolt insertion hole for inserting a fastening bolt are provided, and the block body bolt insertion hole is divided into at least three in a direction perpendicular to the insertion direction with a predetermined thickness width in the pipeline. A rubber seal block body to be disposed;
A clamping board provided before and after the seal block body and provided with a clamping board cable insertion hole for inserting a cable and a clamping board bolt insertion hole for inserting the clamping bolt;
In the seal block body , the rubber hardness of the adjacent right-angle divided seal block bodies of the right-angle divided seal block bodies divided in the direction perpendicular to the insertion direction is harder than the rubber hardness of the adjacent right-angle divided seal block bodies , and soft and alternately Array
By rubber hardness the thickness width of該隣Ri perpendicular division than the rubber hardness is hard seal block body rigidity angle split seal block of neighboring larger softer 軟直angles split seal block having a thickness of width, 軟直angles split seal block body cable to the contact portion of the hardly collide more 軟直angle split seal block body next to the rigid angle split seal block of neighboring not hurt the peripheral surface of 軟直angle split seal block body, the periphery of the seal block body A water shut-off device for a cable pipe opening, characterized in that water leakage from the cable can be eliminated. The seal block body and the clamping board are each divided into two or more in the insertion direction,
The hard right- angle split seal block body and the soft right-angle split seal block body are arranged in the pipe with different split positions in the insertion direction,
2. The cable conduit opening according to claim 1, wherein a division position in the insertion direction of the clamping board and a division position in the insertion direction of the hard right- angled divided seal block body are made substantially the same and arranged in the pipeline. Water stop device. The clamping board is provided with two or more clamping board bolt insertion holes in each divided clamping board divided in the insertion direction,
By inserting the clamping bolts into the clamping bolt bolt insertion holes provided in two or more of the divided clamping boards and the block body bolt insertion holes provided corresponding to the clamping board bolt insertion holes. 3. The water stop device for a cable pipe opening according to claim 2, wherein the seal block body is pressed into contact with the clamping board. The hard right-angle split seal block body is a right- angle split seal block body having a rubber hardness of approximately 70 degrees,
The water stop device for a cable conduit opening according to any one of claims 1 to 3, wherein the soft right-angle split seal block body is a right- angle split seal block body having a rubber hardness of approximately 30 degrees.

Images