JP3329795B2 - Mounting device and mounting device for communication cable pipeline inner wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture for fixing a communication cable, such as an optical cable, to an inner wall of an existing pipeline such as a sewer, and an inner wall of the pipeline of the fixture. The present invention relates to a device for attaching to a vehicle.

[0002]

2. Description of the Related Art Conventionally, when a communication cable such as an optical fiber cable is laid in an existing pipeline such as a sewer, a fitting for fixing the communication cable to an inner wall of the pipeline is provided substantially at an upper half of the inner wall of the pipeline. In addition, a spring-plate-shaped mounting fixture that grips a communication cable and presses and fixes the communication cable to an inner wall surface is used. In this method, a restoring force of a spring plate is used to press and fix the inner wall surface of the pipeline, and as shown in FIG. 12, a communication cable (b) passed through the pipeline (a) is provided at regular intervals. The spring-plate-shaped mounting member (c) is disposed on the mounting surface. Examples of these are disclosed in JP-A-11-315580 and JP-A-2000-104325.

As shown in FIG. 13, these attachments (c) are provided with a substantially semi-annular spring plate slightly longer than the upper half circumference of the pipeline, and the distance between both ends of the spring plate is larger than the inner diameter of the pipeline. A communication cable supporting concave portion (d) for supporting the communication cable across the width of the semi-annular central portion of the outer peripheral surface of the spring plate is provided by bending the spring plate.

[0004]

However, in the case of the attachment (c), since the communication cable supporting recess (d) is provided by bending the semi-annular spring plate itself, the inner wall surface of the conduit (a) is provided. There are four points (points indicated by P) on both ends of the spring plate and on both sides of the communication cable supporting concave part (d), and a gap is easily generated between the inner wall of the conduit and the pressing part.
Also, when viewed from the fulcrum of the spring plate, there are two places on both sides of the communication cable supporting recess (d), and the restoring force of the spring from each of these fulcrums to each end of the spring plate is weak. Therefore, the attachment cannot be firmly fixed, and the position may be shifted by applying high-pressure water during high-pressure washing in the pipeline.

[0005] The present invention has been made in view of the above points, the mounting tool has a strong spring force, a strong fixing force to the inner wall of the pipeline, and can withstand high pressure washing in the pipeline without moving. In addition to the above, the present invention provides an attachment device which makes it extremely easy and reliable to attach the attachment to the inner wall of the conduit.

[0006]

According to a first aspect of the present invention, a vertically movable guide frame is provided on an upper portion of a main body supported by four running rollers, and a guide frame is provided on both sides of the guide frame with a predetermined space therebetween. A roller is provided, and a cable guide composed of a fixed length frame on which a communication cable is placed is provided between the guide rollers. The upper edge of the cable guide is positioned lower than the upper end of the guide roller. The guide frame supporting the guide and the guide roller can be moved up and down by remote control, and a hook whose both ends of a horizontal plate body are bent downward at substantially a right angle to the cable guide is provided on the main body below the cable guide. A spring plate retainer having a spring plate retainer, which can be moved up and down by remote control, is provided with a communication cable conduit formed of a substantially semi-annular spring plate. The communication cable was inserted into a cable support having a substantially U-shaped cross section provided on the lower surface of the upper end of the spring plate of the wall mounting tool, and the communication cable was mounted on the cable guide together with the pipeline inner wall mounting tool. The two ends of both sides of the spring plate of the pipe inner wall fitting are contracted inward against the spring force, and the through-holes provided near both ends of the spring plate are placed at the positions where the spring plate retainer is lowered. The hooks on both sides are locked to provide a mounting device for a communication cable inner wall fitting for mounting the above described cable inner wall fitting.

According to a second aspect of the present invention, a plurality of the above-mentioned mounting devices are connected via a connecting link, and a connecting bracket which is rotatable in a horizontal direction is connected to front and rear ends of each of the mounting devices. 2. The installation device for a communication cable conduit inner wall mounting device according to claim 1, wherein one end of the connection link is connected rotatably by a predetermined angle.

According to a third aspect of the present invention, in the communication cable conduit inner wall mounting tool comprising the substantially semi-annular spring plate, the length of the spring plate is slightly longer than the upper half circumference of the conduit, and both end edges thereof are provided. Forms a slanted edge bent obliquely outward and upward, and fixes a cable support having a substantially U-shaped cross section through which a communication cable striated body is inserted to the lower surface at the center of the spring plate. 2. The mounting device according to claim 1, wherein a hole is provided, and the spring plate has a gap between both ends larger than an inner diameter of the conduit, and a radius of curvature gradually increases from both ends toward the center. It was used as a fixture for the inner wall of the communication cable conduit.

[0009]

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, the fixture A according to the present invention will be described with reference to FIGS. FIG. 1 is a front view showing a state in which a fixture A supporting a cable is fixed to an inner wall of a conduit, FIG. 2 is a plan view before bending a spring plate, and FIG. FIG. 4 is a sectional view perpendicular to the longitudinal direction, and FIG. 4 is a front view of the spring plate in a free state. As shown in FIG. 1, a substantially semi-annular spring plate 2 slightly longer than the upper half circumference of the pipeline 1 is provided, and the spring plate 2 has a gap between both ends 2a larger than the inner diameter of the pipeline 1, and As shown in FIG.
It is configured such that the radius of curvature gradually increases from a to the center 2b. Further, as shown in FIG. 3, both end edges of the semi-annular portion of the spring plate 2
It is bent twice to form the inclined edge 2c. This inclined edge 2c
When this attachment is attached to the inner wall 1a of the pipeline 1, it cuts into the inner wall 1a. Further, a cable support 3 having a substantially U-shaped cross section through which the communication cable 6 is inserted is fixed to the lower surface of the central portion 2b of the spring plate 2 with rivets 4, and as shown in FIG. This is provided with a rectangular through hole 5.

In this embodiment, the reason why the spring plate 2 of the fixture A is fixed to the inner wall 1a of the conduit 1 is that a spring force acts on the fulcrum and the point of action of the spring plate 2. The point of action is both ends 2a and the fulcrum is the center 2b. The length from this fulcrum to both ends 2a of the spring plate 2 is longer than that in which the fulcrum is dispersed as in the above-described conventional example, and the spring plate is one sheet curved in one direction. The plate has a large spring force in combination with its central portion serving as a fulcrum. Further, since the radius of curvature of the spring plate 2 is gradually increased from both end portions 2a toward the center portion 2b, when the spring plate 2 is attached to the inner wall of the pipeline 1, the entire spring plate 2 comes into close contact with the inner wall 1a. No gaps occur. In addition, since the both edges of the semi-annular portion of the spring plate 2 are inclined edges 2c, the edges are set up. Therefore, when the attachment A is attached to the inner wall 1a of the pipeline 1, the spring force of the spring plate 2 As a result, the inclined edge 2c has a function of cutting into the inner wall 1a, and is more firmly attached.

First Embodiment An optical fiber cable is passed through hard vinyl chloride pipes having a diameter of 130 mm and 150 mm, and the fixture A having the above-described structure is used.
Is attached to the inside of the pipe,
Washing with high-pressure water of kgf / cm ² was performed. As a comparative example, high-pressure water washing was performed under the same conditions using the conventional fixture shown in FIG. Fixture A is 300mm long and 40m wide
m, thickness 1.0 mm, and the comparative example is 300 m in length.
m, width 50 mm, thickness 1.0 mm. As a result, in the comparative example, there was a displacement of 310 mm in the case of a 130 mm tube. In the case of a distance between 150 mm, there was a shift of 370 mm. On the other hand, this fixture A has a width of 10 m compared to the comparative example.
Even if it was small, there was no displacement between the two tubes. Therefore, it was found that the device could withstand the pressure of the high-pressure water washing and the position did not move or shift.

Next, the fixture A is connected to the inner wall 1a of the pipeline 1.
The mounting device B to be mounted on the device will be described with reference to FIGS. FIG. 5 is a partial cross-sectional side view of the mounting device B in a pipeline, FIG. 6 is a plan view of the mounting device B, FIG. 7 is an end view taken along line XX in FIG. 5, and FIG. FIG.
3 is an end view taken along the line YY in FIG. FIG. 9 is an end view in a state where the guide frame is lowered in FIG.
In FIGS. 5, 7, 8, and 9, the reason why the mounting device B is floating is to explain that the mounting device B can be used for a small-diameter pipe.

In this mounting device B, a frame main body 10 is supported by four running rollers 11 (only two are shown in the figure, and the other two are not shown). The running roller 11 is run and can be freely inserted into the pipeline 1. Air cylinders 12 are mounted on the front and rear portions of the main body 11, and piston rods 13 which are moved up and down by the air cylinders are provided from the upper surface of each of the air cylinders 12, respectively. The guide rollers 15 are respectively supported on the vertical pieces on both sides of each of the guide frames 14, and the guide rollers 15 are opposed to each other at an interval.

The four front and rear guide rollers 1
5, a cable guide 16 in which two horizontally long plate members are opposed to each other is provided. The cable guide 16 has the horizontal shafts of the front and rear guide rollers 15 on one side supporting both ends of the horizontally long plate, and moving the support rods 17 on the front and rear ends of the horizontally long plate on both sides to connect the cable guide 16. They are supported together. The upper edge of each horizontally long plate of the cable guide 16 is lower than the upper end of each guide roller 15. And to this cable guide 16,
The communication cable is placed in the pipeline 1.

An air cylinder 18 is mounted at the center of the main body 10 and below the cable guide 16. A piston rod 19 extends downward from the lower surface of the air cylinder 18 through the main body 10 and below the main body 10. The piston rod 19 moves up and down by the air of the air cylinder 18. At the lower end of the piston rod 19, a spring plate retainer 20 having hooks 20a whose both ends of a horizontal plate body projecting in a direction substantially perpendicular to the cable guide 16 is bent downward is provided. The air cylinder 18 can be moved up and down via the piston rod 19 by operating the air cylinder 18 by remote control. At this time, two guide pins 21 hang down from the lower surface of the main body 10 on both sides of the biston rod 19 so that the spring plate retainer 20 does not rotate. It is idle.

On the main body 10 on both sides of the air cylinder 18, spring plate guides 22 are erected outward, respectively, and the upper ends of these spring plate guides 22 are perpendicular to the outside. The protruding portion is bent and provided with a fitting groove 22a for fitting a spring plate of a fixture to be mounted on the apparatus. Each of the four running rollers 11 is rotatably supported by a bearing 23, and a rod 24 provided at an upper end of the bearing 23 is connected to the main body 10 and the main body
The spring spring 26 is wound around the outer periphery of the rod 24 between the bearing body 23 and the spring receiver 25 by allowing the spring body 25 to freely pass through the spring support 25 provided on the upper surface of the spring. ing. Therefore, when one of the traveling rollers 11 gets over an obstacle in the pipeline 1, the spring spring 26 contracts and absorbs it, so that the apparatus main body does not swing.

At the front and rear ends of the main body 11, there are provided vertically connecting brackets 27 which are rotatable horizontally. The connection bracket 27 is formed by arranging two vertically-oriented plate members at an interval, and the connection link 2 is provided between the plate members.
The connecting link 28 is rotatably connected by a stopper at a fixed angle only, and can be connected to another apparatus B by the connecting link 28. An air hose 29 is connected to the two air cylinders 12, and an air hose 30 is connected to the one air cylinder 18.

As shown in FIG. 10, an optical fiber cable 43 inserted into a branch pipe (drain pipe) 42 extending from a household drainage basin 40 to a sewer main pipe 41 is used as a fixture A by using the mounting apparatus B. A method of attaching the fixture A to the inner wall 1a of the pipe 1 while supporting the fixture will be described. First, as shown in FIG. 11, the mounting devices B are connected in quintuple via the connecting links 28, and the air hoses 29 and 30 are connected to the air cylinders 12 and 18 of each device B respectively. Then, the mounting device A is mounted on each mounting device B (see FIG. 5).

In mounting the mounting device A on each mounting device B, the optical fiber cable 43 inserted in the branch pipe 42 is passed through the cable support 3 of the mounting device A in advance. The fixture A is movable along the optical fiber cable 43 even when the optical fiber cable 43 is passed through the cable support 3. Further, as shown in FIG. 8, the cable guide 16 of the mounting device B is set in a state of being raised, while the spring plate retainer 20 is set in a state of being lowered. And the above optical fiber cable 43
Is inserted into the cable guide 16 of the mounting device B together with the optical fiber cable 43, and both ends of the spring plate 2 protruding to both sides from the cable guide 16 are contracted inward against the spring force. Then, both sides of the spring plate 2 are fitted into the fitting grooves 22a of the spring plate guide 22, and the respective hooks 20a of the spring plate retainer 20 are engaged with the respective through holes 5 at the lower end of the spring plate 2.

In this way, the fixture A is temporarily attached to each of the attachment devices B, and the connection tool 28 at one end of the five attachment devices B is inserted into the branch pipe 42 from the household drainage basin 40. At this time, the four guide rollers 15 hit the inner wall of the branch pipe 42, and the optical fiber cable 43 supported by the cable guide 16 is located below the upper edge of the guide roller 15, and does not hit the inner wall. Whether or not the mounting device B at the forefront has reached a predetermined position is confirmed by a television camera (not shown) mounted on the mounting device B or the like.
When the state-of-the-art mounting device B reaches a predetermined position, the movement is stopped.

In this state, the optical fiber cable 43 and the central portion 2b of the spring plate 2 of the fixture A are close to the upper inner wall of the branch pipe 42, and the compressed air is sent to the air cylinder 18 by the air hose 30, and the piston The rod 19 is raised. As a result, as shown by the arrow in FIG. 8, the spring plate holder 17 also rises, the hooks 20a on both sides are disengaged from the through holes 5 at both ends of the spring plate 2, and both ends of the spring plate 2 are unlocked. The lever expands outward by its spring force and is pressed and fixed to the inner wall of the branch pipe 42. In this way, the second mounting device B is shifted to a predetermined position, mounting devices A are mounted at predetermined positions, and five mounting devices A are mounted on the inner wall of the branch pipe 42 in order. As shown in FIG. 9, each mounting device B from which the mounting tool A has been removed lowers each guide frame 14, pulls the five mounting devices B with the connecting link 28 at one end, and takes them out of the branch pipe 42. FIG. 10 shows a state in which the optical fiber cable 43 is attached to the branch pipe 42 by a plurality of attachments A.

In the above-described embodiment relating to the fitting A, the fitting A is attached to the inner wall of the conduit. It includes tubes. In addition, in the above-described embodiment relating to the mounting device B, each mounting device is moved to a predetermined position by pushing a single or a plurality of connected mounting devices B into the pipe from one connected end. Instead, each device may be moved in the pipeline by power such as electric power. Further, in the above-described embodiment, the guide frame 14 and the spring plate retainer 20 are moved up and down by using an air cylinder.

[0024]

According to the first aspect of the present invention, while holding the communication cable, the upper part of the spring plate of the pipe inner wall fitting of the communication cable is brought closer to the upper part of the inner wall of the pipe, and the lower end of the spring plate is further engaged therewith. The stopper is opened, and both ends of the spring plate are expanded by the spring force to be pressed and fixed to the inner wall. Therefore, in the pipeline, each part of the device can be operated by remote control, and the pipeline inner wall fitting for the communication cable can be attached very easily and reliably.

According to a second aspect of the present invention, in addition to the effect of the first aspect of the present invention, a plurality of mounting devices are connected via respective connecting links, and the inner wall of the conduit of each communication cable is connected to each mounting device at a time. Since the fittings are attached and the pipe inner wall fittings of the communication cable can be sequentially attached to the pipe inner wall in the pipe, the plurality of communication cables are attached to the pipe inner wall fittings. Work can be done easily and quickly

According to a third aspect of the present invention, there is provided a communication cable inner wall mounting fixture in which one spring plate is bent in one direction, and the spring is pressed against and fixed to the inner wall of the conduit using the spring force of the spring plate. Therefore, it can be fixed very firmly. In addition, both end edges of the semi-annular portion of the spring plate are inclined edges, and when attached to a conduit, these inclined edges bite into the inner wall and are firmly fixed.
Therefore, even when the pipe is washed at a high pressure with a specified pressure, the fitting does not shift due to the force of the high-pressure water. Further, the spring plate adheres more closely to the inner wall of the conduit over the entire circumference, and is more firmly fixed.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a fitting supporting a cable according to an embodiment of the present invention is mounted in a pipeline.

FIG. 2 is a plan view before bending of a spring plate of the attachment according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view perpendicular to the longitudinal direction of a spring plate of the attachment according to the embodiment of the present invention.

FIG. 4 is a front view in a free state of a spring plate of the attachment according to the embodiment of the present invention.

FIG. 5 is a partial cross-sectional side view of a mounting device according to an embodiment of the present invention in a pipe.

FIG. 6 is a plan view of the mounting device according to the embodiment of the present invention.

FIG. 7 is a sectional view taken along line XX of FIG. 5 according to the embodiment of the present invention;
It is a line end view.

FIG. 8 is a sectional view taken along the line YY of FIG. 5 according to the embodiment of the present invention;
It is a line end view.

FIG. 9 is an end view of FIG. 7 according to the embodiment of the present invention in a state where the guide frame is lowered.

FIG. 10 is a side view showing a state in which a plurality of mounting devices according to the embodiment of the present invention are connected in a pipeline.

FIG. 11 is a side view showing a state in which the attachment according to the embodiment of the present invention is attached to a branch pipe.

FIG. 12 is a perspective view showing a state in which a communication cable is fixed to an inner wall of a pipeline using a conventional fixture.

FIG. 13 is a front view of a conventional attachment.

[Explanation of symbols]

Reference Signs List A Attaching tool 1 Pipeline 2 Spring plate 3 Support bracket 4 Rivet 5 Through hole 6 Communication cable B Mounting device 10 Main body 11 Running roller 12 Air cylinder 13 Piston rod 14 Guide frame 15 Guide row 16 Cable guide 17 Support rod 18 Air cylinder 19 Piston rod 20 Spring plate retainer 21 Guide pin 22 Spring plate guide 23 Bearing 24 Rod 25 Spring receiver 26 Spring spring 27 Connection bracket 28 Connection link 29 Air hose 30 Air hose 40 Household drainage basin 41 Sewer main pipe 42 Branch pipe 43 Optical fiber cable

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification code FI H02G 9/06 G02B 6/00 351 (73) Patent holder 500343371 Japan Sewerage Optical Fiber Technology Association 2-chome Otemachi, Chiyoda-ku, Tokyo Building No. 6-2 Nihon Building (72) Inventor Yasuo Taira 4-83, 33 Shibaura, Minato-ku, Tokyo Inside the Kandenko Works (72) Inventor Tetsuro Kumagai 4-83, 33 Shibaura, Minato-ku, Tokyo Inside the Kandenko Works (72) Inventor Hiroshi Kimoto 4-8-33 Shibaura, Minato-ku, Tokyo Japan Inside the Kandenko Works (72) Masaaki Nishiwaki 5-33-11 Shimbashi, Minato-ku, Tokyo Nihon Hi (72) Inventor Akira Kanasugi 2-34-16 Nishisugamo, Toshima-ku, Tokyo Adachi Construction Industry Co., Ltd. (72) Inventor Hideki Kashiwamura 2-163-3 Todaijima, Urayasu-shi, Chiba formula (72) Inventor Tomoya Nishikawa 2-163-3 Todaijima, Urayasu-shi, Chiba Co., Ltd. (72) Inventor Masayasu Imai 3- 14-2 Ueno, Taito-ku, Tokyo Yasuda Co., Ltd. Inside the factory (72) Inventor Hideo Akai 3-14-2 Ueno, Taito-ku, Tokyo Examiner, Kenichi Kiyota inside the Yasuda Manufacturing Co., Ltd. (56) References JP-A-61-288709 (JP, A) JP-A-3-3 164015 (JP, A) JP-A-11-315580 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 9/00 F16L 1/00 F16L 3/12 G02B 6/46 H02G 1/06 H02G 9/06

Claims (3)

(57) [Claims] 1. A vertically movable guide frame is provided at an upper portion of a main body supported by four traveling rollers, and guide rollers are provided at predetermined intervals on both sides of the guide frame. A cable guide consisting of a frame of a fixed length on which a communication cable is placed, wherein the upper end of the cable guide is positioned lower than the upper end of the guide roller, and the cable guide and the guide frame supporting the guide roller are remote. A spring plate holder having hooks whose both ends of a horizontal plate body are bent downward is provided substantially vertically to the cable guide on the main body below the cable guide so as to be vertically movable by operation. Can be moved up and down by remote operation, and the lower end of the upper end of the spring plate of the communication cable conduit inner wall fixture consisting of a substantially semi-annular spring plate A communication cable is inserted through a cable support having a substantially U-shaped cross section, the communication cable is mounted on the cable guide together with the pipe inner wall fitting, and both end portions of the spring plate of the mounted pipe inner wall mounting tool. Is pressed inward against the spring force, and hooks on both sides at positions where the spring plate retainer is lowered downward are engaged with the respective through holes provided near both ends of the spring plate, thereby forming the pipe line. A mounting device for a communication cable inner wall mounting device, wherein the inner wall mounting device is mounted. 2. A plurality of said mounting devices are connected via a connecting link, and a connecting bracket which is rotatable in a horizontal direction is connected to front and rear ends of each of the mounting devices, and the connecting bracket is rotatable only at a certain vertical angle. 2. The installation device for a communication cable inner wall mounting device according to claim 1, wherein one end of a connection link is connected to the connection link. 3. The communication cable conduit inner wall mounting device comprising a substantially semi-annular spring plate, wherein the length of the spring plate is slightly longer than the upper half circumference of the conduit, and both end edges thereof are inclined obliquely upward. Forming a slanted edge, fixing a cable support having a substantially U-shaped cross section through which a communication cable striated body is inserted on the lower surface of the center portion of the spring plate, and providing through holes at both ends of the spring plate,
The spring plate, the interval between both ends is larger than the inner diameter of the pipeline,
2. The pipe inner wall fitting for a communication cable according to claim 1, wherein the radius of curvature is gradually increased from both ends toward the center.