JP4335626B2 - Attachment device for slack prevention material for long objects - Google Patents

Description

The present invention relates to a mounting device for mounting a slack Mi prevention material long object such as a communication cable to be laid in conduit in conduit.

  In recent years, for the purpose of constructing a high-speed / ultra-high-speed network, communication cables such as optical fiber cables are being laid in underground pipes such as existing sewer pipes and gas pipes. In this way, the method of laying communication cables in underground pipes does not impair the aesthetics compared to the conventional installation method, and is also resistant to disasters such as fires and earthquakes. It has the advantages of

  As one method of laying such a communication cable, a tension member that supports the communication cable so as to be relatively movable in the length direction, or a protective pipe containing the communication cable and the tension member inside is pulled into the sewer pipe, There is a method in which a communication cable is arranged in the state of being close to the upper part in the pipe line (for example, the uppermost wall surface) so as not to disturb the flow of sewage as much as possible by pulling up both ends of the member. Here, when the laid communication cable is long, the communication cable may be slackened only by the tension applied to the tension member. Therefore, a member for preventing the slack may be attached in the pipe line.

  As this slack prevention material, for example, there is one having the following structure (for example, see Patent Document 1). This slack preventing material is made of steel having spring elasticity and is rolled into a semicircular or more circular arc shape, and a communication cable or the like provided in one circumferential direction of the band member in the longitudinal direction of the pipe. And a concave holding portion that is slidably held. When attaching the slack preventing material in the pipe, after the belt-like member is reduced in diameter, the slack preventing material is carried to the predetermined mounting position in the pipe by the loading device, and then the diameter of the belt-like member is reduced. Release the state. Then, the belt-like member is expanded in diameter by the elastic restoring force of the belt-like member and is in close contact with the inner surface of the pipe line, and the communication cable or the like is held by the concave holding portion. Here, in order to further improve the adhesion of the slack preventing material to the inner surface of the pipe line, metal spikes may be provided on the outer portions of both ends of the belt-like member.

Japanese Patent Laying-Open No. 2002-171627 (FIG. 4)

  By the way, in the case where the above-mentioned slack preventing material is mounted in a pipe having a relatively large diameter (for example, an inner diameter of 300 mm or more), in order to ensure that the slack preventing material is in close contact with the inner surface of the pipe, A large elastic restoring force is required. In order to obtain such a large elastic restoring force, for example, it is conceivable to increase the width of the belt-shaped member. However, if the width of the belt-like member is increased, the number of loosening prevention materials that can be carried into the pipe line at a time by the carrying-in device is limited, so that the number of carrying-in increases and the construction efficiency is lowered.

  In order to improve the adhesion of the strip-shaped member to the inner surface of the pipe line, it is conceivable to provide large spikes at both ends of the strip-shaped member. In particular, when the underground pipe is a sewer pipe, dirt, etc. is likely to be caught in the gap, and the wastewater flows in the pipeline due to the dust. There is a risk of being disturbed. Further, when the elastic member has a large elastic restoring force when the strip member is released from the reduced diameter state in the pipeline, the end of the strip member collides with the pipeline during the diameter expansion, resulting in a large impact force. Acts on the inside of the pipe, and there is a possibility that the inner face of the pipe may be damaged.

An object of the present invention is to provide an anti-slack material that can be attached without obstructing the flow of internal fluid in the pipeline and securely contacting the inner surface of the pipeline even when attached to a pipeline having a relatively large diameter . It is to provide an attachment device.

Means for Solving the Problems and Effects of the Invention

The attachment device for the slack preventing material for a long object according to the first invention is for arranging a long object composed of a communication cable laid in a pipe or a protective pipe through which the communication cable is inserted above the pipe. A belt-shaped member rounded into a ring shape, and a guide member fixed to a radially inner side of one end portion of the belt-shaped member and slidably holding the other end portion of the belt-shaped member in the circumferential direction A fixing member that is attached to the guide member and can fix the other end portion of the belt-like member to the guide member so as not to be slidable, and is provided in at least one circumferential direction of the belt-like member and recessed radially inward An attachment device for attaching a slack preventing material for a long object, which is concave and has a holding part for holding the long object so as to be slidable, into a pipe line, and the slack preventing material is disposed on an outer periphery of the mounting apparatus. Body casing and front A vertical drive means for driving the main body casing in the vertical direction,
Provided at a predetermined position before Symbol main body casing, an engagement engagement member in the fixing member, the other end side portion of the belt-shaped member by the fixing member with the engagement member guide A switching means for switching between a fixed state in which the member is slidably fixed and a fixed release state in which the fixed state is released, and an end portion on the opposite side to the guide member of the band-shaped member of the slack preventing material. A receiving member for receiving and holding, and driving the receiving member along the outer periphery of the main body casing while the engaging member of the switching means engages and holds the fixing member mounted on the guide member; And a diameter expanding means for expanding the diameter of the belt-shaped member .

This slack prevention material for long objects is, for example, a length of a protective tube through which the communication cable or communication cable is inserted when a communication cable is laid in underground pipes such as sewer pipes and gas pipes. It is installed in the pipeline to prevent the slack of the scale. When the slack preventing material is attached to the inside of the pipe line by the long material slack preventing material attaching device , first, the outer peripheral portion of the main body casing has a plurality of diameters reduced in diameter than the inner diameter of the pipe line. After the slack preventing materials are arranged side by side, the attachment device is carried into the pipe line.

  Next, after the attachment device is stopped at a predetermined attachment position in the pipe, the main body casing is driven upward by the vertical drive means, and then the slack preventing material attached to the predetermined attachment position by the diameter expanding means. In the state where the end of the belt-like member opposite to the guide member is received and held by the receiving member, the receiving member is driven along the outer periphery of the main casing to expand the diameter of the belt-like member, thereby preventing the slack. Is in close contact with the inner surface of the pipe. At this time, the communication cable or the protective tube is held in close contact with the inner surface of the pipe line by the concave holding portion provided in the belt-like member. Here, it is preferable that the communication cable or the protective tube is held at an upper position in the pipeline that does not obstruct the flow of the internal fluid in the pipeline. Finally, the fixing member is operated by the switching means provided in the main body casing, and the both end portions of the belt-like member are switched from the slidable fixed release state to the fixed state fixed non-slidable, and the slack preventing material is The attachment is completed while maintaining the state of being in close contact with the inner surface of the pipeline.

According to this attachment device, by driving the receiving member that holds the end portion of the belt-shaped member along the outer periphery of the main body casing, it is possible to expand the diameter of the slack preventing material and to make sure that the slack preventing material is in close contact with the inner surface of the pipe. Furthermore, by operating the fixing member with the switching means and switching to a fixed state in which both end portions of the belt-like member are fixed in a non-slidable state, the slack prevention material is in close contact with the inner surface of the conduit and the communication cable or the protective tube is held. The state can be maintained.
Moreover, in this slack preventing material, the belt-shaped member is expanded and brought into close contact with the inner surface of the pipeline, and then both ends thereof are fixed so as not to slide, so that the tight contact with the inner surface of the pipeline can be reliably maintained. Therefore, even when installed in a relatively large-diameter pipe, there is no need for a large elastic restoring force to ensure good adhesion to the inner surface of the pipe, as required by conventional arc-shaped slack prevention materials. Thus, the width of the belt-like member can be reduced, and a larger number of slack preventing materials can be carried into the pipeline at a time. For the same reason, the thickness of the belt-shaped member can be made thinner as long as the strength necessary for holding the communication cable or the protective tube can be secured. Furthermore, since it is not necessary to provide a large spike on the belt-like member for ensuring adhesion to the inner surface of the pipe, it is difficult to inhibit the flow of internal fluid such as sewage in the pipe.

According to a second aspect of the present invention, there is provided the attachment device for an anti-sagging material for a long object in the first aspect , wherein the vertical drive means is connected to a plurality of wheels capable of traveling in a pipeline and is a tube of the main casing. A pair of arm members pivotally connected to both ends in the longitudinal direction of the road, and the pair of arm members are swung around a pivot connection portion with the main body casing to connect the plurality of wheels to the pipe. The travel position when traveling in the road and the longitudinal distance between the plurality of wheels positioned on both ends of the main body casing in the longitudinal direction of the pipe are shorter than the travel position, and the slack A position switching mechanism for switching over the work position when the prevention member is installed in the pipeline, and the main body casing is moved by the position switching mechanism in a state where the plurality of wheels are in contact with the inner surface of the pipeline. Switch from the running position to the working position By Rukoto elevated in conduit, wherein the position switching mechanism, a pair of screw holes comprising a longitudinally extending and said longitudinally extending opposite screws with each other at the both end portion thereof in line are respectively formed A screw shaft, a rotation driving means for rotating the screw shaft, and a pair of screw holes of the screw shaft that are screwed in an inner fitting manner and are pivotally connected to the pair of arm members, respectively. It has a pair of screw members.

The vertical drive means is configured to swing a pair of arm members pivotally connected to both ends in the longitudinal direction of the pipe line of the main casing by a position switching mechanism, with the pivot connection part being the center. The main body casing can be driven up and down by switching the position of the wheel between the traveling position and the working position. Here, the position switching mechanism rotates the screw shaft by the rotation driving means, thereby causing the pair of screw members fitted in the pair of screw holes of the screw shaft to be horizontally aligned in the longitudinal direction of the pipe line. And a pair of arm members pivotally connected to the pair of screw members, respectively.
In this way, the vertical drive means is configured to be directly driven up and down by a cylinder or the like because the arm member can be swung to switch the position of the wheel by moving the screw member horizontally. Compared to the case, the height of the vertical drive means can be kept low, and the mounting device can be downsized and the mounting device can be easily carried into the pipeline.

According to a third aspect of the present invention, there is provided the attachment device for a slack preventing material for a long object, in the first or second aspect , wherein the switching means is provided at one end in a longitudinal direction of a pipe line of the main body casing. Provided with a feed mechanism for feeding a plurality of slack preventing materials arranged adjacent to each other in the longitudinal direction to the switching means side, and the feed mechanism is arranged in the longitudinal direction on the outer circumferential side portion of the main casing. A plurality of claw portions which are urged so as to partially protrude outward from the main body casing and are provided with a slack preventing material on the outside thereof, and a plurality of these claw portions which can be embedded in the main body casing, comprising said longitudinally relatively movable provided the claw portion holding member relative to the body casing holds the claw portion, and a claw part driving means for driving the pawl portion holding member in the longitudinal direction, said plurality of The plurality of slack preventing materials are respectively disposed on the plurality of claw portions on the switching means side of the portion, and the claw portion on the switching means side among the remaining claw portions protrudes to the outside of the main body casing, and the switching The claw portion holding member drives the claw portion holding member to the switching means side in a state where the claw portion driving means is engaged with the side portion of the sag prevention material farthest from the means .

When a plurality of slack preventing materials are arranged on the outer peripheral portion of the main body casing , the feed mechanism is mounted after one slack preventing material arranged on one end side in the longitudinal direction of the main casing pipe is attached in the pipe. Sends the remaining plurality of slack prevention materials to the switching means side along the longitudinal direction of the pipe line, thereby moving the next slack prevention material to a predetermined position for attachment on the outer peripheral portion of the main body casing. Let Here, only when the claw portion does not face the slack preventing material, the claw portion partially protrudes outward from the main body casing. The remaining farthest slack preventing member from the switching means of the plurality of slack preventing member is engaged with the claw portion. And when the nail | claw part holding member holding a some nail | claw part is driven to the switching means side by the nail | claw part drive means, the remaining slack prevention material will be sent to the switching means side with a nail | claw part. Therefore, even when a plurality of slack preventing materials are arranged on the outer periphery of the main casing and are carried into the pipe at once, the slack preventing materials attached to the respective mounting positions in the pipe are sequentially transferred to the main body by the feeding mechanism. Since it can send to the predetermined position for attachment in a casing, attachment work can be performed continuously and the efficiency of attachment work of a slack prevention material improves.

Embodiments of the present invention will be described with reference to the drawings. This embodiment is an example in which the present invention is applied to a slack preventing material for communication cables such as optical fiber cables laid in a sewer pipe.
First, as shown in FIG. 1, manholes 2 and 3 are connected to a main pipe 1 of a sewer pipe, and branch pipes 4 and 5 branch from branch pipe ports 6 and 7 from an upper end portion of the main pipe 1. The branch pipes 4 and 5 are connected to branch pipe rods 8 and 9 installed for each household (not shown).

  In general, the main pipe 1 is laid at a depth of several meters along the road, and branch pipe ports 6 and 7 are formed on the oblique upper side of the main pipe 1. After rising at a steep angle from 7, the angle is changed near the ground surface and connected to the branch pipes 8 and 9 at a loose angle.

  A communication cable such as an optical fiber cable is laid in the sewer pipe. The communication cable includes, for example, a trunk communication cable 20 laid in the main pipe 1 and branch communication cables 21 and 22 laid in the branch pipes 4 and 5. As shown in FIGS. 2 (a) and 2 (b), the trunk communication cable 20 and the trunk tension member 25 laid in the main pipe 1 are mutually inserted in a protective pipe 45 that protects them. It is arranged to be slidable. The branch communication cables 21 and 22 are inserted into the branch pipe protection tube 46, and the branch pipe protection tube 46 also has a function as a tension member.

  The tension member 25 is a rope, string, belt, or the like made of high-strength low-stretch fibers such as polyparaphenylene benzobisoxazole (PBO) fiber, aramid fiber, carbon fiber, metal fiber, or glass fiber. A scale, a stainless steel wire, etc. can be used. The branch pipe protective pipe 46 is preferably a stainless steel flexible pipe that can be bent only with a radius larger than the minimum bending radius of the branch communication cables 21 and 22.

Then, for example, by applying a tension to the tension member 25 by the tension applying mechanism 34 constituted by a manual winch and a hook, the protective tube 45 and the branch tube protective tube 46 are lifted, thereby connecting the communication cables 20 to 22 to the main tube. 1 and in the branch pipes 5 and 6.
However, when the length of the communication cable 20 laid in the main pipe 1 is long, it is difficult to prevent the protective tube 45 from loosening only with the tension applied to the tension member 25 by the tension applying mechanism 34. . Therefore, a plurality of slack preventing members 50 that hold the protective tube 45 at the upper position in the conduit 1a of the main pipe 1 and prevent the protective tube 45 from loosening are attached in the conduit 1a.

  Hereinafter, the slack preventing material 50 will be described. As shown in FIGS. 3 and 4, the slack preventing member 50 is fixed to a band-shaped member 51 rounded in a ring shape and one end side portion of the band-shaped member 51, and the other end side portion of the band-shaped member 51 is inserted therethrough. The guide member 52 that is slidably held in the circumferential direction in a state in which the guide member 52 is mounted, and a screw that is attached to the guide member 52 and that fixes the other end portion of the belt-like member 51 held by the guide member 52 to the guide member 52 so as not to slide. The member 53 (fixing member) is a concave member that is provided at one circumferential position of the belt-like member 51 and is recessed radially inward, and holds the protective tube 45 so as not to be loosened in the pipe line 1a. And a holding portion 54 for carrying out the operation. Here, the slack preventing material 50 in the present embodiment is particularly suitable when the inner diameter of the pipe 1a of the main pipe 1 is, for example, a medium-diameter pipe of about 500 mm. The present invention is not limited to a pipe line, and can be applied to a pipe having a smaller diameter or a pipe having a larger diameter.

  When attaching the slack preventing material 50 in the main pipe line 1a, the band-like member 51 is forcibly expanded in diameter by an attachment device 60 which will be described later and is brought into close contact with the inner surface of the pipe line 1a. By fixing the side portion in a non-slidable manner with the screw member 53, the loosening prevention member 50 can be kept in close contact with the inner surface of the pipe line 1a, so that the loosening prevention member 50 does not require an elastic restoring force. Therefore, it is not necessary to make the width of the band-shaped member 51 so wide. When the main pipe 1 is the above-described medium-diameter pipe, it is sufficient that the width of the band-shaped member 51 is about 5 cm, for example. Similarly, the thickness of the belt-like member 51 can be reduced within a range in which the strength necessary for holding the protective tube 45 can be secured. Furthermore, if the belt-like member 51 is made of spring steel, the hardness increases and it becomes difficult to buckle, so the thickness of the belt-like member 51 can be made thinner.

  As shown in FIGS. 3, 4 (a), and 4 (b), a U-shaped guide member 52 is fixed to the radially inner side of one end side portion of the band-shaped member 51. And between the guide member 52 and the said one end side part of the strip | belt-shaped member 51, the part on the opposite side to the guide member 52 of the strip | belt-shaped member 51 is penetrated. Further, a screw member 53 that fixes the belt-like member 51 held by the guide member 52 to the guide member 52 so as not to be slidable is attached to a radially inner portion of the guide member 52. When the screw member 53 is tightened, the portion of the belt-like member 51 that is held by the guide member 52 is fixed so as not to come off the guide member 52.

  At a position slightly apart from the guide member 52 in the circumferential direction in the belt-like member 51, a holding portion 54 having a U-shaped cross section and a plate thickness larger than that of the belt-like member 51 is fixed to the belt-like member 51 by welding, for example. Yes. When the belt-like member 51 expands in diameter and comes into close contact with the inner surface of the pipe line 1a in a state where the protective pipe 45 is held above the pipe line 1a by the holding portion 54, the protective pipe 45 is prevented from loosening. Therefore, the protection tube 45 can be prevented from slackening in the conduit 1a.

  Next, the attachment device 60 for attaching the above-described slack preventing material 50 in the pipe 1a of the main pipe 1 will be described with reference to FIGS. In the description of the attachment device 60, the left and right direction in FIG. 5 which is the longitudinal direction of the pipe line 1a will be described as the left and right direction and the direction perpendicular to the paper surface in FIG.

  As shown in FIGS. 5 to 8, the attachment device 60 includes a main body casing 61 in which the above-described slack preventing material 50 is disposed on the outer periphery thereof, and a vertical drive that drives the main body casing 61 in the vertical direction in the pipe line 1 a. A mechanism 62 (vertical drive means) and a receiving member 90 that receives and holds the end of the belt-shaped member 51 of the slack preventing member 50 on the side opposite to the guide member 52 are provided. The end portion of the band-shaped member 51 or its vicinity is fixed to the guide member 52 so as not to be slidable by a diameter-enlarging mechanism 63 (diameter expanding means) that expands the band-shaped member 51 by driving along the outer periphery. The switching mechanism 64 (switching means) that switches between the fixed state that has been released and the fixed release state that has been released, and the loosening prevention member 50 disposed on the outer peripheral portion of the main body casing 61 are left. And a feed mechanism 65 to be sent to (the longitudinal one side in the direction of the pipe 1a). The main body casing 61 is provided with a vertical drive mechanism 62, a diameter expansion mechanism 63, a switching mechanism 64, and a feed mechanism 65, respectively, to form an attachment device 60. The attachment device 60 is composed of a plurality of wheels 73. It is possible to travel in the pipeline 1a in the direction.

  First, the main body casing 61 will be described. As shown in FIGS. 5 to 8, the main body casing 61 is made of metal (for example, made of stainless steel), and the main body casing 61 includes a horizontal cylindrical body member 70, and the body member 70. Plate-like end wall members 71 and 72 fixed to the left and right ends by a plurality of bolts, respectively. A belt-like member 51 of a slack preventing material 50 that is rounded into a ring shape is disposed on the outer peripheral portion of the body member 70. Note that a plurality of (for example, a maximum of seven) slack preventing members 50 can be mounted side by side in the left-right direction on the outer peripheral portion of the body member 70.

  Next, the vertical drive mechanism 62 will be described. As shown in FIGS. 5 to 8, the vertical drive mechanism 62 includes a pair of arm members in which a plurality of wheels 73 capable of traveling in the pipe line 1 a are connected and pivotally connected to the left and right ends of the main body casing 61, respectively. 74 and the pair of arm members 74 are swung around a pivot connecting portion 74a with the main body casing 61, and a plurality of wheels 73 travel in the pipeline 1a indicated by the solid line in FIG. A position switching mechanism 75 that switches between the travel position at the time and the work position when the slack preventing material 50 indicated by a chain line in FIG. 5 is attached in the pipe line 1a.

  The pair of arm members 74 have a substantially inverted L-shape when viewed from the front, and the pair of arm members 74 are connected to the left and right end wall members 71, 71 of the main casing 61 via arm support members 76, 77. 72 are pivotally connected to each other. As shown in FIG. 8, the front and rear ends of each arm member 74 are connected to a long and flat plate-like wheel holding member 78, and four wheels 73 are connected to the front and rear ends of the wheel holding member 78. ing.

  As shown in FIG. 5, the position switching mechanism 75 includes a screw shaft 80 that extends in the left-right direction and has a pair of screw holes 80 a that are oppositely threaded at both left and right end portions, and the screw shaft 80. A drive motor 81 (rotation drive means) that rotates, and a pair of screws that are screwed into a pair of screw holes 80a of the screw shaft 80 in an internally fitted manner and are pivotally connected to a pair of arm members 74, respectively. Member 82.

  The screw shaft 80 is horizontally disposed at the lower end portion of the main body casing 61. Further, the screw shaft 80 is rotatably supported on the left and right end wall members 71 and 72 via bearings. The screw shaft 80 is connected to a drive motor 81 disposed in the main body casing 61 via gear members 83 and 84. Screw holes 80a extending in the left-right direction are formed in the left and right ends of the screw shaft 80, and the base end portions of the pair of screw members 82 are screwed into the pair of screw holes 80a so as to fit inside. ing. Here, since the pair of screw holes 80a are formed so as to be reverse to each other, when the screw shaft 80 is rotationally driven in one direction by the driving force of the drive motor 81, the pair of screw holes 80a is formed in the pair of screw holes 80a. The pair of screw members 82 that are respectively screwed together move in a direction that advances from the screw hole 80a or a direction that retreats into the screw hole 80a.

  And the base end part (end part on the opposite side to the wheel 73) of the above-mentioned pair of arm members 74 is pivotally connected to the tip part of the pair of screw members 82, respectively. Therefore, when both of the pair of screw members 82 move in the direction of retreating into the screw hole 80a, the pair of arm members 74 are driven to swing downward about the pivot connection portion 74a with the main body casing 61. The wheels 73 connected to the pair of arm members 74 are switched from the travel position shown by the solid line in FIG. 5 to the work position shown by the chain line in FIG. 5, and the main casing 61 moves to the upper position in the pipeline 1a. (See FIGS. 11 to 13).

  On the other hand, when both of the pair of screw members 82 move in the direction of advancement from the screw holes 80a, the pair of arm members 74 are driven to swing upward, and the wheels 73 connected to the pair of arm members 74 are The working position indicated by the chain line in FIG. 5 is switched to the traveling position indicated by the solid line in FIG. 5, and the main casing 61 moves to a lower position in the pipeline 1a (see FIG. 6).

Next, the diameter expansion mechanism 63 will be described. As shown in FIGS. 5 and 9 to 13, the diameter expansion mechanism 63 includes a receiving member 90 and a receiving member driving mechanism 91 that drives the receiving member 90 along the outer periphery of the main body casing 61.
As shown in FIGS. 9 and 10, the receiving member 90 is formed by integrally forming a substantially triangular flat plate-like main body portion 92 in plan view and a receiving portion 93 extending rightward from the right end portion of the main body portion 92. It is. The left end portion of the main body 92 is connected to the tip ends of the two shaft members 94 by bolts 95, respectively. The receiving portion 93 is formed with a notch portion 93a that opens to the front and right. The notch portion 93a has an end portion on the opposite side to the guide member 52 of the band-like member 51 of the slack preventing member 50. Is inserted from the right and received.

  As shown in FIGS. 9 to 13, the receiving member drive mechanism 91 includes two shaft members 94 connected to the receiving member 90, and these shaft members 94 are slidably held and rotatable to the main body casing 61. A holding member 96, a drive motor 97 that rotates the holding member 96 in the circumferential direction of the pipe line 1 a, a guide groove 98 for moving the receiving member 90 along the main body casing 61, and a receiving member 90, and an engaging portion 99 that engages with the guide groove 98.

  As shown in FIG. 10, the two shaft members 94 are connected to the left end portion of the main body 92 of the receiving member 90, respectively. Further, these two shaft members 94 are respectively inserted into two insertion holes formed in the holding member 96, and are slidably held by the holding member 96. The holding member 96 is formed in a rectangular shape when viewed from the side, and the rotation shaft 100 is inserted through a substantially central portion of the holding member 96, and a key member or the like interposed between the rotation shaft 100 and the holding member 96 is used. The holding member 96 is configured to rotate integrally with the rotation shaft 100. The rotating shaft 100 is rotatably supported by the main body casing 61 via a bearing 102 in the bearing member 101 on the left end side and a bearing 103 on the right end side. Further, a side surface is provided on the right end portion of the rotating shaft 100. A gear member 104 having a semicircular view is integrally formed. The gear member 104 is connected to a drive motor 97 disposed in the main body casing 61 via a gear member 105. Therefore, the driving force of the drive motor 97 is transmitted to the rotating shaft 100 via the gear members 105 and 104, and the holding member 96 is configured to rotate integrally with the rotating shaft 100.

  As shown in FIGS. 6 and 11 to 13, the guide groove 98 is formed along the outer peripheral shape of the end wall member 71 on the rear side (left side in FIG. 11) of the left surface portion of the end wall member 71. Yes. The engaging portion 99 is attached to the lower portion of the main body portion 92 of the receiving member 90, and the engaging portion 99 is engaged with the guide groove 98.

  In this diameter expansion mechanism 63, when the rotation shaft 100 is rotationally driven by the drive motor 97 and the holding member 96 rotates together with the rotation shaft 100, the engaging portion 99 attached to the receiving member 90 is guided by the guide groove 98. Move along. At this time, as shown in FIGS. 11 to 13, while the shaft member 94 slides in the axial direction with respect to the holding member 96, the receiving member 90 connected to the shaft member 94 holds the end portion of the slack preventing material 50. While being received and held, it is guided by the guide groove 98 and moves along the outer periphery of the main body casing 61, so that the loosening prevention material 50 is expanded in diameter, and as shown in FIG. It will adhere to the inner surface of the path 1a.

  Next, the switching mechanism 64 will be described. The switching mechanism 64 slides the end of the belt-shaped member 51 opposite to the guide member 52 to the guide member 52 by tightening the screw member 53 of the slack preventing member 50 or releasing the tightened state. Switching is made between a fixed state where the fixed state is impossible and a fixed state where the fixed state is released. As shown in FIGS. 8, 9, and 14, the switching mechanism 64 includes a driver unit 110 that can be engaged with the head of the screw member 53, a drive motor 111 that rotationally drives the driver unit 110, and the driver unit 110. And an air cylinder 112 for driving the drive motor 111 up and down.

  The driver part 110 is disposed so as to be able to protrude and retract from an opening 70 a formed at the upper end part of the left side portion of the body member 70 of the main body casing 61. The driver unit 110 is coaxially connected to the output unit 111 a of the drive motor 111 so that the driving force of the drive motor 111 is directly transmitted to the driver unit 110. The base plate 113 fixed to the drive motor 111 is connected to a rod (not shown) of the air cylinder 112. When air is supplied to the air cylinder 112 and the rod is driven up and down, The driver unit 110 is also integrally driven up and down. Here, when the driver part 110 is driven upward, the tip of the driver part 110 protrudes outward from the opening 71 a, and the tip of the driver part 110 engages with the head of the screw member 53. The screw member 53 is tightened or the tightened state is released by rotating the driver unit 110 by the drive motor 111.

  Next, the feed mechanism 65 will be described. This feed mechanism 65 is configured to remove the remaining slack preventing material 50 disposed on the outer peripheral portion of the main body casing 61 after the slack preventing material 50 is mounted in the pipe line 1a by the aforementioned diameter expanding mechanism 63 and switching mechanism 64. It is for moving to the left and moving the slack preventing material 50 to be attached next to a position directly above the driver unit 110.

  As shown in FIGS. 5, 7, and 15 to 18, the feeding mechanism 65 is provided on the outer peripheral side portion of the main body casing 61, and partially protrudes to the outer side of the main body casing 61. Plural (for example, seven) claw portions 120 that can be engaged with the arranged slack preventing material 50, and claws that hold these claw portions 120 and that can move relative to the main body casing 61 in the left-right direction. A part holding member 121 and a drive motor 122 (claw part driving means) for driving the claw part holding member 121 in the left-right direction are provided.

  As shown in FIG. 7, three rectangular grooves 123 extending in the left-right direction and having a rectangular cross section are formed at approximately three equal positions in the circumferential direction on the outer peripheral portion of the main body casing 61. As shown in FIGS. 15 to 18, in these three square grooves 123, claw holding members 121 having a prismatic shape and extending in the left and right directions are arranged so as to be movable relative to the main body casing 61 in the left and right directions. It is installed. The claw holding member 121 is formed with a holding groove 124 that has a rectangular cross section and extends to the left and right. Further, the upper end of the holding groove 124 extends in the left-right direction in the same manner as the holding groove 124, and is longer than the holding groove 124. A narrow opening 125 is formed in a row.

A plurality of claw portions 120 are stored in the holding grooves 124 described above. A right end side portion of the claw portion 120 is pivotally supported by a pin member 126 fixed to the claw portion holding member 121. On the other hand, a coil spring 127 is interposed between the left end side portion of the claw portion 120 and the bottom surface portion of the holding groove 124, and the claw portion 120 rotates around the pin member 126 in the clockwise direction of FIG. It is urged in the direction of. By the way, as shown in FIGS. 17 and 18, the left end portion of the claw portion 120 has a stepped engagement so that the front and rear widths of the upper end portion of the claw portion 120 are smaller than the lower portion. A portion 128 is formed. And since the nail | claw part 120 is urged | biased in the clockwise direction of FIG. 16, the left end side part of the nail | claw part 120 is comprised so that it can protrude partially from the opening part 125 outside, Since the portion 128 engages with the stepped portion 129 between the holding groove 124 and the opening 125, the left end side portion of the claw portion 120 is locked so as not to protrude further.
Here, the claw portions 120 (for example, the six claw portions 120 excluding the rightmost claw portion 120 in FIG. 15) where the slack preventing material 50 having a reduced diameter is disposed on the surface thereof are arranged on the coil spring 127. It is pushed into the holding groove 124 against the urging force. On the other hand, the claw portion 120 where the slack preventing material 50 is not disposed partially protrudes outward from the main body casing 61 by the biasing force of the coil spring 127.

  By the way, as shown in FIGS. 7 and 8, the three claw holding members 121 are coupled to the coupling plate 130 located on the right side of the main body casing 61 by bolts 131. As shown in FIG. 5, a cylindrical member 132 having a screw hole is fixed to the connecting plate 130, and the cylindrical member 132 is a screw portion 133 that rotates integrally with the output portion of the drive motor 122. Are screwed together. Accordingly, when the screw portion 133 is rotated by the driving force of the drive motor 122, the cylindrical member 132 is driven in the left-right direction, so that the connecting plate 130 and the three claw portion holding members 121 are simultaneously moved in the left-right direction.

  Therefore, according to this feed mechanism 65, after the slack preventing material 50 positioned immediately above the driver portion 110 of the switching mechanism 64 is mounted in the pipe line 1a, the slack preventing that is next mounted is as follows. It becomes possible to move the material 50 directly above the driver unit 110. That is, as shown in FIGS. 15 and 16, the claw portion 120 on the right side of the rightmost loosening prevention member 50 does not face the loosening prevention member 50, so that it is moved outward by the biasing force of the coil spring 127. It is in a state where it protrudes partially and engages with the right end of the slack preventing material 50 located on the rightmost side. In this state, the connecting motor 130 and the three claw holding members 121 are moved to the left by the length of one claw 120 by rotating the drive motor 122 in one direction by a predetermined angle. Then, the slack preventing material 50 located on the rightmost side is pushed leftward by the engaging claw portion 120, and the remaining slack preventing materials 50 arranged on the outer peripheral portion of the main body casing 61 are integrated to the left. Moving. Then, the slack preventing material 50 located on the leftmost side is disposed directly above the driver unit 110.

  After the slack preventing material 50 is sent to the left in this way, the connecting plate 130 and the three claw holding members 121 are driven backward to the right by rotating the drive motor 122 by a predetermined angle in the reverse direction. . At this time, the claw portion 120 facing the lower side of the slack preventing material 50 is pushed into the holding groove 124 against the urging force of the coil spring 127 by the slack preventing material 50. The part holding member 121 moves smoothly to the right without interfering with the slack preventing material 50. Then, when the right-hand nail portion 120 of the anti-loosening material 50 located on the rightmost side does not face the anti-loosening material 50 when moved to the right by the length of one nail portion 120. Since it partially protrudes by the urging force of the coil spring 127 and engages with the right end portion of the slack preventing material 50 located on the rightmost side, the slack preventing material 50 can be sent to the left again.

Next, a series of operations of the attachment device 60 when attaching the slack preventing material 50 in the pipe line 1a will be described.
First, a screw member mounted on the guide member 52 in a state where the diameter of the band-shaped member 51 of the slack preventing material 50 is reduced to a diameter smaller than the inner diameter of the pipe 1a in advance outside the pipe 1a of the main pipe 1. Tighten 53. A plurality of slack preventing members 50 are arranged on the outer peripheral portion of the main body casing 61 in the left-right direction. Here, the end of the belt-like member 51 of the slack preventing member 50 located on the leftmost side opposite to the guide member 52 is inserted into the opening 93a (see FIG. 10) of the receiving member 90.

  In this state, the attachment device 60 is carried into the pipe line 1a and travels to a predetermined attachment position where the slack preventing material 50 is attached. Then, as shown in FIG. 5, in the vertical drive mechanism 62, the pair of left and right arm members 74 are swung to switch the position of the wheel 73 from the travel position to the work position, thereby driving the main body casing 61 upward. To do.

  Next, as shown in FIGS. 9 and 14, in the switching mechanism 64, by supplying air to the air cylinder 112, the drive motor 111 and the driver unit 110 are driven upward, and the tip of the driver unit 110 is moved to the main body casing. The screw member 53 is protruded outward from the opening 70a of the 61 and engaged with the head of the screw member 53, and the driver unit 110 is driven to rotate by the drive motor 111. The state is released and switched to the fixed release state so that the end of the belt-like member 51 can slide in the circumferential direction with respect to the guide member 52. At this time, since the belt-like member 51 is made of spring steel, the belt-like member 51 is slightly expanded in diameter by its elastic restoring force, but the end of the belt-like member 51 opposite to the guide member 52 is received by the receiving member 90. Furthermore, since the end of the belt-like member 51 on the guide member 52 side is pressed against the inner surface of the pipe line 1a by the driver part 110 engaged with the screw member 53, the belt-like member 51 is in the circumferential direction of the pipe line 1a. It is designed not to slip.

  From this state, as shown in FIGS. 11 to 13, the diameter of the slack preventing material 50 is increased by the diameter expanding mechanism 63. That is, the holding member 96 is rotationally driven in the circumferential direction of the pipe line 1 a by the driving force of the drive motor 97, and the two shaft members 94 are slid with respect to the holding member 96 and attached to the receiving member 90. By moving the joint portion 99 along the guide groove 98 of the main body casing 61, the receiving member 90 receiving the end portion of the band-shaped member 51 is driven along the outer periphery of the main body casing 61. At this time, as described above, the end of the belt-like member 51 on the guide member 52 side is regulated so as not to move in the circumferential direction by the driver portion 110 engaged with the head of the screw member 53. 51 expands in diameter and is in close contact with the inner surface of the pipe line 1a in a state in which the protective tube 45 is held by the holding portion.

  Then, the screw motor 53 is driven to rotate again by the drive motor 111 and the screw member 53 is tightened to switch to a fixed state, and both end portions of the belt-like member 51 are fixed so as not to be slidable in the circumferential direction. The attachment is completed while maintaining the state of being in close contact with the inner surface of the pipe line 1a. Thereafter, in the switching mechanism 64, the drive motor 111 and the driver unit 110 are driven downward by the air cylinder 112 to retract the driver unit 110 to the inner side of the upper end of the opening 70a. The main body casing 61 is driven downward by rotating the receiving member 90 to the lower position by rotating in the direction opposite to that at the time of the diameter expansion, and further switching the wheel 73 from the working position to the traveling position by the vertical drive mechanism 62. . That is, the attachment device 60 is returned to the state when it is carried into the pipe line 1a and stopped.

  Here, when the other slack preventing material 50 remains on the outer peripheral portion of the main body casing 61, the remaining slack preventing material 50 is sent to the left by the feed mechanism 65, and the next slack preventing material 50 is attached. It is moved to a position directly above the driver unit 110. That is, as shown in FIGS. 5, 7, and 15 to 17, in the feed mechanism 65, three claw holding members 121 and claw holding members are obtained by rotating the drive motor 122 in one direction by a predetermined angle. The plurality of claws 120 held by 121 are driven to the left. At this time, the right-side claw portion 120 partially protrudes and engages with the right-side slack preventing material 50, so that the remaining slack preventing material 50 is moved to the left by the claw portion 120. The slack preventing member 50 located on the leftmost side is moved to a position directly above the driver portion 110, and the end portion of the belt-like member 51 is inserted into the notch portion 93a of the receiving member 90. In addition, after sending the slack preventing material 50 to the left in this way, the claw portion holding member 121 and the plurality of claw portions 120 are driven rightward by rotating the drive motor 122 in the reverse direction to return to the original positions. Bring it back.

According to the slack preventing material 50 and the attachment device 60 described above, the following effects can be obtained.
In the slack preventing material 50, the inner surface of the pipe line 1a of the band-shaped member 51 is fixed by expanding the diameter of the band-shaped member 51 and closely contacting the inner surface of the pipe line 1a, and then fixing both ends thereof in a circumferential direction. It is possible to reliably maintain the close contact state. Therefore, unlike the conventional arc-shaped slack preventing material 50, it is not necessary to increase the width and secure a large elastic restoring force in order to ensure the tight contact state with the inner surface of the pipe 1a. Thus, a larger number of slack preventing materials 50 can be carried into the pipe line 1a by the attachment device 60 at a time. Moreover, since the thickness of the strip | belt-shaped member 51 can be made thinner and it is not necessary to provide the strip | belt-shaped member 51 with the spike for ensuring adhesiveness, it is hard to inhibit the flow of the sewage in the pipe line 1a.

  When the belt-like member 51 is made of steel having spring elasticity, the thickness of the belt-like member 51 can be further reduced while maintaining the strength that does not buckle, and the flow of sewage in the pipe line 1a is further inhibited. No longer.

  Further, according to the mounting device 60 described above, by driving the receiving member 90 that holds the end portion of the belt-like member 51 along the outer periphery of the main body casing 61, the diameter of the slack preventing material 50 is increased and the inner surface of the pipe line 1a. Can be securely adhered to each other. Further, the screw member 53 is operated by the switching mechanism 64 to switch to the fixed state in which both end portions of the belt-like member 51 are fixed so as not to be slidable, so that the slack preventing material 50 is in close contact with the inner surface of the pipe line 1a. Can be maintained.

  Since the vertical drive mechanism 62 can drive the pair of screw members 82 horizontally to swing the arm member 74 up and down to switch the position of the wheel 73, it is directly driven up and down by a cylinder or the like. The height of the vertical drive mechanism 62 (i.e., the height of the mounting device 60) can be kept low compared to the case configured as described above, and the mounting device 60 can be reduced in size to bring the mounting device 60 into the pipe line 1a. It becomes easy to carry in.

  Further, even when a plurality of slack preventing materials 50 are arranged in the main body casing 61 and carried into the pipe line 1 a at a time, after the one slack preventing material 50 is attached, the next slack preventing material 50 is attached by the feeding mechanism 65. Since it can send to the position right above the driver part 110, the efficiency of the attachment operation | work of the slack prevention material 50 improves. In addition, the claw portion 120 of the feeding mechanism 65 partially protrudes outward from the main body casing 61 only when it does not face the slack preventing material 50, so that the claw portion is fed after the slack preventing material 50 is fed leftward. When returning 120 to the right, the claw portion 120 can smoothly move the claw portion 120 to the right without interfering with the slack preventing material 50 facing the claw portion 120.

Next, modified embodiments in which various modifications are made to the embodiment will be described. However, components having the same configuration as in the above embodiment are given the same reference numerals and description thereof is omitted as appropriate.
1] In the slack preventing material 50, the holding portion 54 does not necessarily have to be a separate member from the belt-like member 51, and the holding portion 54 may be integrally formed with the belt-like member 51. In this case, it is not necessary to weld the holding portion 54 to the belt-like member 51, which is advantageous in terms of manufacturing cost. Further, the number of holding portions 54 in one slack preventing material 50 is not limited to one, and a plurality of holding portions 54 may be arranged in the circumferential direction. In this case, a plurality of communication cables or protective tubes can be held by one slack preventing material in the pipe line 1a.

  2] The guide member 52 of the slack preventing member 50 is not limited to a structure that holds the end of the belt-like member 51 in a state where the end is inserted. For example, when the belt-like member 51 is made of spring steel as in the above embodiment, the end of the belt-like member 51 opposite to the guide member 52 has a diameter due to the elastic restoring force of the belt-like member 51 itself. Since it is pressed outward in the direction, it is possible to hold the end portion of the band-shaped member 51 even with a structure in which the both ends of the band-shaped member 51 are only guided in the width direction.

3] The number of the slack preventing members 50 that can be carried in at once by the mounting device 60 is not limited to seven in the above embodiment, but the inner diameter of the pipe line 1a, the width of the slack preventing member 50, the size of the main casing 61, and the like. These can be changed as appropriate according to various conditions.
4] The number of claw part holding members 121 that hold the claw parts 120 and the arrangement positions thereof are not limited to the above-described embodiment. For example, when attaching the slack preventing material 50 in the pipe line 1a having a diameter larger than that of the main pipe 1 of the embodiment, the holding groove 124 of the main body casing 61 is not formed in the claw holding member 121. By providing at the position, the claw holding member 121 can be mounted in a state of projecting radially outward from the main body casing 61, and the larger diameter slack preventing material 50 can be disposed on the outer peripheral portion of the main body casing 61. You may comprise as follows.

  5] The present invention can also be applied to the case where the tension member 25 is omitted and only the communication cable such as an optical fiber cable is accommodated in the protective tube 45 and is laid in the conduit 1a. Furthermore, the protective tube 45 may be omitted, and the communication cable laid in the main tube 1a or the branch tubes 4 and 5 may be directly held by the slack preventing material 50.

1 is an overall schematic diagram illustrating a laying structure of a communication cable according to an embodiment of the present invention. It is a perspective view which shows the communication cable and tension member which were penetrated by the protective tube. It is a principal part enlarged view of Fig.2 (a). It is a perspective view of a slack prevention material. It is a figure which shows a slack prevention material, (b) is a side view of a slack prevention material, (c) is sectional drawing of a guide member. It is a longitudinal cross-sectional view of an attachment apparatus. It is a left view of an attachment apparatus. It is a right view of an attachment apparatus. It is a top view of an attachment apparatus. It is a block diagram of a main body casing, a diameter expansion mechanism, and a switching mechanism. It is a top view of a receiving member and a holding member. It is a figure which shows the slack prevention material just before diameter expansion. It is a figure which shows the slack prevention material during diameter expansion. It is a figure which shows the slack prevention material after completion of diameter expansion. It is the elements on larger scale regarding the switching mechanism of FIG. It is the sectional view on the AA line of FIG. It is a principal part enlarged view of FIG. FIG. 17 is a plan view of FIG. 16. It is BB sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a Pipe line 20 Communication cable 45 Protection tube 50 Slack prevention material 51 Strip member 52 Guide member 53 Screw member 54 Holding | maintenance part 60 Mounting apparatus 61 Main body casing 62 Vertical drive mechanism 63 Diameter expansion mechanism 64 Switching mechanism 65 Feed mechanism 73 Wheel 74 Arm member 75 Position switching mechanism 80a Screw hole 80 Screw shaft 81 Drive motor 82 Screw member 83, 84 Gear member 90 Receiving member 97 Drive motor 110 Driver part 111 Drive motor 120 Claw part 121 Claw part holding member 122 Drive motor

Claims (3)

A belt-shaped member that is a member for disposing a long object composed of a communication cable laid in a pipe line or a protective pipe through which this communication cable is inserted, and is rounded in a ring shape, A guide member fixed to the inner side in the radial direction of one end side portion of the belt-like member and holding the other end side portion of the belt-like member so as to be slidable in the circumferential direction, and the other end side portion of the belt-like member attached to the guide member A fixing member that can be slidably fixed to the guide member, and a holding portion that is provided in at least one place in the circumferential direction of the belt-like member and is recessed inwardly in the radial direction, and holds the long object in a slidable manner. An attachment device for attaching a slack preventing material for a long object provided in a pipeline,
A main body casing in which the slack preventing material is disposed on the outer periphery;
Vertical driving means for driving the main body casing in the vertical direction ;
Provided at a predetermined position before Symbol main body casing, an engagement engagement member in the fixing member, the other end side portion of the belt-shaped member by the fixing member with the engagement member guide Switching means for switching between a fixed state in which the member is slidably fixed and a fixed release state in which the fixed state is released;
A receiving member that receives and holds an end portion of the belt-like member of the slack preventing material opposite to the guide member; and the fixing member on which the engaging member of the switching means is mounted on the guide member. A diameter expanding means for expanding the diameter of the belt-shaped member by driving the receiving member along the outer periphery of the main body casing while keeping the engagement.
A device for attaching a material for preventing slack in a long object. The vertical drive means is
A pair of arm members connected to a plurality of wheels capable of traveling in a pipe line and pivotally connected to both ends in the longitudinal direction of the pipe line of the main body casing;
The pair of arm members are swung around a pivotal connection portion with the main body casing so that the plurality of wheels travel in the pipeline and the longitudinal direction of the pipeline of the main casing. A position in which the distance in the longitudinal direction of the plurality of wheels positioned on both ends of the vehicle is shorter than the travel position, and the position is switched over to the work position when the slack preventing material is attached in the pipeline. A switching mechanism,
The main body casing is raised in the pipeline by being switched from the traveling position to the working position by the position switching mechanism in a state where the plurality of wheels are in contact with the inner surface of the pipeline.
The position switching mechanism is
A screw shaft extending in the longitudinal direction of the duct and extending in the longitudinal direction at both end portions thereof, and formed with a pair of screw holes each serving as a reverse screw;
A rotation driving means for rotating the screw shaft;
Claim 1, characterized in that it comprises a screw member of a pair of the respectively pivotally connected to the arm member meshing with and the one pair of shape fitted into each to a pair of screw holes of the screw shaft Equipment for preventing slack of long objects. The switching means is provided at one end in the longitudinal direction of the conduit of the main body casing;
A feed mechanism for sending a plurality of slack preventing materials disposed adjacent to each other in the longitudinal direction on the outer peripheral portion of the main body casing, to the switching means side ,
This feed mechanism
Provided on the outer peripheral side of the main casing in line with the longitudinal direction, urged so as to partially protrude outward from the main casing, and an anti-sagging material is disposed on the outer side of the main casing to embed it in the main casing. A plurality of nail portions that can be inserted ,
A claw holding member provided to hold the plurality of claw parts and to be relatively movable in the longitudinal direction with respect to the main body casing;
Claw part driving means for driving the claw part holding member in the longitudinal direction,
Among the plurality of claw portions, the plurality of slack preventing materials are respectively disposed on the plurality of claw portions on the switching means side, and among the remaining claw portions, the claw portion on the switching means side protrudes outside the main body casing. Te, while engaging the sides of the farthest of the slack preventing member from said switching means, according to claim 1 or, characterized in that the said pawl part driving means for driving the pawl portion holding member to said switching means side The attachment device of the slack prevention material of the long article of 2 .

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