JP2008035575A - Cable laying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical fiber laying machine which can lay a long distance cable continuously by simple work. <P>SOLUTION: The cable laying machine 1 for laying a cable (optical fiber 2) such as an optical fiber or a wire on a laying object (measurement object structure 4) through adhesive 3 has a tubular body section 10 which is provided with a passage 5 for inserting the cable being fed to the laying object. A path 6 opening to the feeding side end of the cable inserting passage 5 and supplying the adhesive 3 at least to the laying object side of the cable being fed to the laying object is formed in the body section 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cable laying machine that lays a cable such as an optical fiber, a power line, or a communication line on an object to be laid with an adhesive.

  In recent years, strain measurement using optical fibers has been in the spotlight in the field of long-term maintenance of structures. In this optical fiber strain measurement, the strain of the measurement target structure is measured by laying the optical fiber on the measurement target structure such as a tunnel or a bridge and measuring the strain amount of the optical fiber.

  In order to lay the optical fiber in the measurement target structure, there are cases where the optical fiber is embedded in the measurement target structure, and where the optical fiber is attached to or along the measurement target structure. None of these laying operations have been established, and a variety of methods have been used. This was the same when laying cables other than optical fibers such as power lines and communication lines.

  For example, when an optical fiber is laid in a new measurement target structure, the optical fiber is often embedded in the measurement target structure. In this case, when the installation distance is longer than 100 m, it is impossible to move the optical fiber to be installed over the entire line by hand. May be subdivided and laid. For example, while holding the adhesive in the hand, the divided optical fiber is inserted into the groove formed in the measurement target structure, and the adhesive is poured into the groove to be embedded. On the other hand, apart from this method, the optical fiber may be embedded in the concrete when the concrete is placed. The ends of the divided optical fibers are fused using a dedicated device (Prior Art 1).

  On the other hand, when an optical fiber is laid on an existing measurement target structure, the optical fiber cannot be embedded inside the measurement target structure. It will be fixed alongside. Also in this case, when the installation distance is a long distance exceeding 100 m, it is impossible to move the optical fiber to be installed over the entire line by hand, so the optical fiber is divided into a plurality of lengths. It is designed to be subdivided and laid. When sticking with an adhesive, first hold the optical fiber divided by the quick-acting adhesive on the structure to be measured while holding the adhesive in the hand, and finally use a liquid epoxy resin adhesive. The method of fixing is taken. The ends of the divided optical fibers are fused using a dedicated device (Prior Art 2).

As another laying method, there was a method as disclosed in JP-A-2002-328010. In this method, an optical fiber is inserted into a measurement target structure and a saddle-like cover filled with an adhesive is fixed. The hook-shaped cover is formed with hook-shaped protrusions, and is fixed to a hook-and-loop fastener attached to the structure to be measured (prior art 3).
JP 2002-328010 A

  In the prior art 1 and the prior art 2, since it is necessary to lay an optical fiber over a long distance while holding the adhesive in the hand, there is a problem that the work is complicated and takes a lot of time and effort. there were. In addition, the fusion of the optical fiber is performed using a dedicated device, but the laying place may be narrow or high, and the fusion work environment is not necessarily good. For this reason, there is a case where the fusion between the optical fibers is not sufficient, and there is a problem that the measurement accuracy may be lowered and the measurement may be hindered. Furthermore, when the optical fiber is embedded in the concrete, if the fusion is insufficient, there is a possibility that water may enter from the fusion part at the time of placing the concrete and measurement may be impossible.

  In the prior art 3, since the hook-and-loop cover is attached to the structure to be measured and the saddle-like cover is provided separately, the structure for fixing the optical fiber becomes complicated, and the manufacturing process increases and the construction process also increases. . Furthermore, even in this case, when the installation distance is longer than 100 m, the optical fiber is divided into a plurality of pieces and divided into predetermined lengths. As with the prior art 1 and the prior art 2, depending on the fusing work environment, the fusing may not be sufficient, and light leaks, resulting in insufficient brightness, and the measurement accuracy is reduced and measurement is performed. May cause trouble.

  Accordingly, the present invention has been devised to solve the above-described problem, and an object thereof is to provide an optical fiber laying machine capable of continuously laying a long-distance cable with a simple construction. .

  The invention according to claim 1 for solving the problem is a cable laying machine for laying a cable such as an optical fiber, a power line or a communication line on an object to be laid with an adhesive, to the laying object. The cable is provided with a cylindrical body portion having a cable insertion passage through which the cable to be sent out is inserted, and is opened at the sending side end of the cable insertion passage in the body portion and sent out to the laying object. The cable laying machine is characterized in that an adhesive supply path for supplying an adhesive to at least the laying object side portion is formed.

  According to the above configuration, since the adhesive can be supplied to the cable from the adhesive supply path while supplying the cable from the cable insertion path, the optical cable can be simply moved by moving the tip of the trunk along the object to be laid. It can be laid continuously and can be laid very easily. Moreover, since the cable and the adhesive can be laid together, the burden on the operator is reduced, and the laying work can be performed while holding a long-distance cable. Therefore, it is possible to reduce the fusion work in the case where the cable is an optical fiber, it is possible to reduce construction labor and time, and to prevent a reduction in measurement accuracy.

  The invention according to claim 2 is that the cable is an optical fiber for measuring strain of a structure, and the laying object includes a tunnel, a bridge, a dam, or the like in which strain measurement is performed by the optical fiber. The cable laying machine according to claim 1, wherein the cable laying machine is a general measurement target structure.

  According to the said structure, while laying | laying work of an optical fiber can be performed easily, the measurement precision of a construction structure in the strain measurement using an optical fiber can be improved.

  According to a third aspect of the present invention, the body portion includes an outer cylinder that constitutes an outer shell thereof, and an inner cylinder that is provided inside the outer cylinder with a predetermined gap, and the inner cylinder 3. The cable insertion path is configured in a space inside, and the adhesive supply path is configured in a gap between the inner cylinder and the outer cylinder. The cable laying machine described.

  According to the said structure, the trunk | drum provided with the cable insertion path and the adhesive agent supply path can be comprised with a simple structure, and a cable laying machine can be manufactured easily.

  According to a fourth aspect of the present invention, the outer cylinder is formed in a taper shape whose tip end is reduced in diameter toward the tip end side, and the outer circumference of the inner cylinder is an inclination of the taper of the outer cylinder. The diameter is reduced at an inclination angle smaller than the angle, the maximum diameter portion is formed in a taper shape larger than the opening diameter of the tip of the outer cylinder, and is fixed to the outer cylinder so as to be movable in the axial direction. The cable laying machine according to claim 3, wherein the cable laying machine is a cable laying machine.

  According to the above configuration, since the adhesive supply path can be freely opened and closed simply by moving the inner cylinder in the axial direction, leakage of the adhesive can be prevented, and the cable laying machine can be easily transported. be able to.

  In the invention according to claim 5, a moving member is fixed to the proximal end portion of the inner cylinder, which is screwed into the inner peripheral surface of the outer cylinder and moves in the axial direction by rotating around the axis. The cable laying machine according to claim 3 or 4, wherein the cable laying machine is provided.

  According to the said structure, since it moves to an axial direction with respect to an outer cylinder only by rotating a moving member around an axis | shaft, the movement to the axial direction of an inner cylinder can be performed easily.

  In the invention according to claim 6, an adhesive supply pipe for supplying the adhesive is connected to the adhesive supply path, and a stopper device that stops the supply of the adhesive to the adhesive supply pipe The cable laying machine according to any one of claims 1 to 5, wherein a cable laying machine is provided.

  According to the said structure, since supply of an adhesive agent can be stopped reliably with a stopper apparatus, the leak of an adhesive agent can be prevented and a cable laying machine can be conveyed easily.

  According to a seventh aspect of the present invention, the adhesive supply pipe is made of an elastic material, and the stopper device presses a side surface of the adhesive supply pipe so that a flow path in the adhesive supply pipe is formed. The cable laying machine according to claim 6, wherein the cable laying machine is configured to close and stop the supply of the adhesive.

  According to the above configuration, since the supply of the adhesive is stopped by closing the flow path in the adhesive supply pipe by pressing the side surface of the adhesive supply pipe, the adhesive supply pipe is specially provided. Therefore, the cable laying machine can be easily manufactured.

  The invention according to claim 8 is characterized in that the adhesive supply pipe is provided with an adhesive supply amount adjusting device that adjusts the supply amount of the adhesive in accordance with the feeding speed of the cable. The cable laying machine according to claim 6 or claim 7.

  According to the above configuration, uneven coating of the adhesive can be eliminated, the adhesive strength of the cable to the object to be laid can be increased, and the measurement accuracy in strain measurement using the optical fiber can be increased.

  According to a ninth aspect of the present invention, the adhesive supply pipe is made of an elastic material, and the adhesive supply amount adjusting device includes a pushing member urged by the adhesive supply pipe and the cable. A first roller member that contacts the second roller member that is in contact with the pushing member and that is rotated by the rotational force of the first roller member and pushes the pushing member against the biasing force by a frictional force with the pushing member; The cable laying machine according to claim 8, further comprising:

  According to the above configuration, the adhesive supply pipe is not specially processed, and the adhesive supply amount adjusting device does not need to be provided with complicated equipment such as a control device, and has a mechanical and simple structure. Therefore, the cable laying machine can be manufactured easily and inexpensively.

  The invention according to claim 10 further includes a roll member around which the cable is wound, and an adhesive supply device that stores and pressure-feeds the adhesive. It is a cable laying machine according to the above.

  According to the said structure, a longer cable can be laid integrally with an adhesive agent by winding a cable around a roll member. Therefore, it is possible to eliminate the fusion work when the cable is an optical fiber, to reduce the labor and time for construction, and to prevent the measurement accuracy from being lowered.

  According to the present invention, an excellent effect that a long-distance cable can be continuously laid by simple construction is exhibited.

  Next, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the present embodiment, an optical fiber (cable) for measuring an optical fiber strain is applied to a structure to be measured (in this embodiment, a general construction structure including a tunnel, a bridge, a dam, etc.). A cable laying machine for laying will be described as an example. In general, construction structures include various structures such as reinforced concrete structures, steel structures, and steel reinforced concrete structures. Note that optical fiber strain measurement is applied to a wide variety of applications, such as tunnels, bridges, dams, buildings, plants, road slopes, river dikes, etc., as well as airplanes and ships.

  FIG. 1 is a cross-sectional view showing a state of laying the best mode for carrying out the cable laying machine according to the present invention, and FIG. 2 is an interruption of use of the best mode for carrying out the cable laying machine according to the present invention. FIG. 3 is a rear view and sectional view showing a moving member of the cable laying machine according to the present invention, and FIG. 4 shows an adhesive supply amount adjusting device for the cable laying machine according to the present invention. FIG. 5 is a perspective view showing a laying operation using the cable laying machine according to the present invention, FIG. 6 is a sectional view showing a roll member of the cable laying machine according to the present invention, and FIG. It is sectional drawing which showed the adhesive agent supply apparatus of the cable laying machine which concerns.

  As shown in FIGS. 1 and 2, the cable laying machine 1 is for laying a cable on an object to be laid (see FIG. 5) with an adhesive 3, and is a cable sent to the laying object. A cylindrical body portion 10 having a cable insertion path 5 through which the cable is inserted, and at least an installation target of a cable that opens to the transmission side end of the cable insertion path 5 and is sent out to an installation object. An adhesive supply path 6 for supplying the adhesive 3 to the object side portion is formed. By the way, in this embodiment, the adhesive 3 is a two-component mixed type.

  As shown in FIG. 5, in this embodiment, the cable is an optical fiber 2 used for optical fiber strain measurement, and the laying target is the measurement target structure 4 (in this embodiment, the inner peripheral surface of the tunnel). ).

  As shown in FIGS. 1 and 2, the trunk portion 10 of the cable laying machine 1 includes an outer cylinder 20 constituting an outer shell thereof, and an inner cylinder 30 provided with a predetermined gap inside the outer cylinder 20. And have.

  The inner cylinder 30 has a cylindrical shape. The inner peripheral surface of the inner cylinder 30 has an inner diameter through which the optical fiber 2 can be inserted, and the cable insertion path 5 is configured by the space inside the inner cylinder 30. The outer peripheral surface of the distal end portion (the side from which the optical fiber 2 is sent out) of the inner cylinder is formed in a tapered shape that decreases in diameter toward the distal end side. The inner peripheral surface of the inner cylinder 30 has the same inner diameter over the entire length. A cable outlet 32 through which the optical fiber 2 is sent out is formed at the tip of the tapered portion 31 of the inner cylinder 30.

  The outer cylinder 20 has a cylindrical shape having an inner peripheral surface that opens a predetermined gap from the outer peripheral surface of the inner cylinder 30. The distal end portion of the outer cylinder 20 is formed in a tapered shape that decreases in diameter toward the distal end side. The tapered portion 21 of the outer cylinder 20 is configured such that both the outer peripheral surface and the inner peripheral surface are reduced in diameter, and a delivery port 22 through which the optical fiber 2 and the adhesive 3 are simultaneously fed is formed at the tip of the tapered portion 21. Has been. The inclination angle (taper angle) of the tapered portion 21 of the outer cylinder 20 is configured to be larger than the inclination angle (taper angle) of the tapered portion 31 of the inner cylinder 30. An opening diameter of the delivery port 22 (a tip opening diameter of the outer cylinder 20) is configured to be smaller than the maximum diameter portion 31a of the outer peripheral surface of the inner cylinder 30.

  Inside the outer cylinder 20, a plurality of (three in this embodiment) support members 23a, 23b, and 23c that support the inner cylinder 30 so as to be movable in the axial direction are provided. The support members 23 a, 23 b, and 23 c are formed in a ring shape, and are disposed at a predetermined interval in the axial direction of the body portion 10. Of the support members 23a, 23b, and 23c, the support member 23a located on the distal end side is disposed at a predetermined interval from the distal end portion of the outer cylinder 20, and is located on the distal end side of the support member 23a. The adhesive supply path 6 is configured by the gap between the outer cylinder 20 and the inner cylinder 30. The gap between the outer cylinder 20 and the inner cylinder 30 between the support member 23a on the distal end side and the support member 23b located in the middle is an adhesive supply pipe for supplying the adhesive 3 to the adhesive supply path 6 The piping space 8 of 7a, 7b is comprised. Two adhesive supply pipes 7a and 7b are provided in order to separately supply the A liquid 3a and the B liquid 3b of the adhesive 3 of the two liquid mixture type. Each of the adhesive supply pipes 7 a and 7 b extends through the through holes 25 and 25 formed in the outer cylinder 20 and into the pipe space 8. Two communication ports (not shown) for connecting the adhesive supply path 6 and the piping space 8 are formed in the support member 23a on the distal end side. Two adhesive supply pipes 7a and 7b are connected to each communication port, respectively. Thereby, the A liquid 3a and the B liquid 3b supplied from the adhesive supply pipes 7a and 7b are mixed in the adhesive supply path 6 to constitute the adhesive 3. That is, the adhesive supply path 6 also serves as a mixing chamber for mixing the A liquid 3a and the B liquid 3b. A spiral groove is formed on the surface of the tip of the taper portion 21 of the outer cylinder 20 and the taper portion 31 of the inner cylinder 30 constituting the adhesive supply path 6 to efficiently mix the A liquid 3a and the B liquid 3b. You may comprise so that it can do. Furthermore, since the adhesive supply path 6 is configured such that the diameter of the tip side is reduced toward the delivery port 22, the A liquid 3a and the B liquid 3b are efficiently mixed while being pushed in. The support member 23 c on the base end side opposite to the tip end side is disposed at a predetermined interval from the base end portion of the outer cylinder 20, and the collar portion provided at the base end portion of the inner cylinder 30. 33 is configured so as not to interfere with 33. A spring member 34 is interposed between the inner cylinder 30 and the flange portion 33. The spring member 34 is provided along the axial direction of the inner cylinder 30 and is configured to bias the inner cylinder 30 toward the distal end side when the adhesive supply path 6 is closed.

  The adhesive 3 is, for example, a curing agent in which the A liquid 3a is composed of a main agent composed of an epoxy resin (viscosity: 180 Pa · s = 1800P), and the B liquid 3b is composed of polyamidoamine (viscosity: 30 Pa · s = 300 P). It consists of At this time, the mixing ratio of the liquid A 3a and the liquid B 3b is 50:50. According to the adhesive 3 having such a component, it can be applied to adhesion of metal, glass, ceramics, concrete, wood, tile, and the like, and is cured in approximately 12 hours in an environment of 20 to 25 ° C.

  As shown in FIGS. 1 and 2, a moving member 35 for moving the inner cylinder 30 in the axial direction is provided at the proximal end portion of the inner cylinder 30. The moving member 35 is a cylindrical member fixed to the base end side of the flange portion 33, and as shown in FIG. 3, a cable insertion path 5 connected to the inner cylinder 20 is formed inside, and a male passage is formed on the outer peripheral surface. A screw 35a is formed. A grip portion 35 b is formed on the base end side surface of the moving member 35 at a position eccentric from the center. The gripping part 35b is composed of a protrusion protruding toward the base end side, and by rotating the moving member 35 with the head of the gripping part 35b configured to rotate freely, the pressing of the moving member 35 Push-back is performed smoothly. On the other hand, a female screw 24 corresponding to the male screw 35 a of the moving member 35 is formed on the inner peripheral surface of the base end portion of the outer cylinder 20.

  As shown in FIGS. 1 and 2, the adhesive supply pipes 7a and 7b extending from the outer cylinder 20 to the outside are provided with a stopper device 40 for stopping the supply of the adhesive 3 (A liquid 3a and B liquid 3b). ing. The adhesive supply pipes 7a and 7b are made of an elastic material, and are extendable in the radial direction. The stopper device 40 includes a pressing member 41 that presses the side surfaces of the adhesive supply pipes 7a and 7b. The pressing member 41 is configured to be movable in the radial direction of the adhesive supply pipes 7a and 7b. . Specifically, the pressing member 41 is fixed to one end (the distal end side of the body portion 10) of the spring member 43, and is tilted with respect to the outer cylinder 20 at the other end (the proximal end side) of the spring member 43. A freely provided trigger 44 is fixed. The spring member 43 extends in the radial direction of the adhesive supply pipes 7a and 7b. The trigger 44 is configured to be orthogonal to the axial direction of the outer cylinder 20 in a state in which no force is applied, and is configured to tilt to the proximal end side of the trunk portion 10. Adhesive supply pipes 7 a and 7 b are arranged on the distal end side of the body portion 10 of the pressing member 41.

  In a state where no force is applied to the trigger 44, the pressing member 41 is urged toward the distal end side of the body portion 10 by the spring member 43, and the adhesive supply pipes 7a and 7b are pressed and elastically deformed. Is configured to block. When the trigger 44 is pulled and tilted toward the base end side of the body portion 10, the pressing member 41 is pulled toward the base end side via the spring member 43 and moves in a direction away from the adhesive supply pipes 7a and 7b. The pressing state of the adhesive supply pipes 7a and 7b is released, and the adhesive supply pipes 7a and 7b return to the original shape by the pressing from the compressor 72, so that the internal flow paths are opened. A grip 45 is provided on the base end side of the body 10 of the trigger 44. The grip portion 45 is fixed to the outer peripheral surface of the outer cylinder 20 of the trunk portion 10, and is configured such that the operator pulls the trigger 44 while gripping the grip portion 45.

  As shown in FIGS. 1, 2, and 4, an adhesive supply amount adjustment that adjusts the supply amount of the adhesive 3 in accordance with the feeding speed of the optical fiber 2 (cable) is applied to the adhesive supply pipes 7 a and 7 b. A device 50 is provided. The adhesive supply amount adjusting device 50 is disposed inside the outer cylinder 20 and is provided in contact with the optical fiber 2. The adhesive supply amount adjusting device 50 is provided in both adhesive supply tubes 7a and 7b in order to adjust the supply amounts of the two adhesive supply tubes 7a and 7b, respectively.

  As shown in FIG. 4, the adhesive supply amount adjusting device 50 includes a pressing member 51 that is urged by the adhesive supply pipe 7 a (7 b), a first roller member 52 that contacts the optical fiber 2, and a pressing member 51. The 2nd roller member 53 which contacts is provided. The pushing member 51 has a prismatic shape, and is disposed so as to be movable along a direction perpendicular to the axial direction of the optical fiber 2 (the radial direction of the optical fiber 2). A spring member 54 is provided at the end of the pushing member 51 opposite to the adhesive supply pipe 7a (7b). The pushing member 51 is urged by the spring member 54 to the adhesive supply pipe 7a (7b), and the adhesive supply pipe 7a (7b) is pressed and elastically deformed, so that the cross-sectional area of the internal flow path is increased. It is comprised so that it may reduce. The first roller member 52 is rotatably provided on the side of the optical fiber 2 (outside in the radial direction of the cable) and is configured by a rubber roller. When the optical fiber 2 moves in the inner cylinder 30, the first roller member 52 rotates due to frictional force with the rubber outer peripheral surface. The first roller member 52 and the second roller member 53 are connected to each other by power transmission means 55 such as a belt so that the rotational force of the first roller member 52 is transmitted to the second roller member 53. It is configured. The power transmission means 55 is configured to cross between the first roller member 52 and the second roller member 53, and the first roller member 52 and the second roller member 53 rotate in opposite directions. The second roller member 53 is rotatably provided on the side portion of the pushing member 51 (the axially proximal end side of the optical fiber 2), and is constituted by a rubber roller. The second roller member 53 is in contact with the pushing member 51, and rotates in a direction to move the pushing member 51 away from the adhesive supply pipe 7a (7b) when the optical fiber 2 is sent out. . At that time, the surface of the second roller member 53 and the pushing member 51 is processed to increase the friction effect so that the rotation speed is well transmitted. As the processing format, for example, a cloth or sheet having a large roughness may be fixed to the surface, or minute protrusions may be formed on the surface.

  When the optical fiber 2 moves in the axial direction within the cable insertion path 5 of the inner cylinder 30, the first roller member 52 rotates due to frictional force with the surface of the optical fiber 2. The rotational force is transmitted to the second roller member 53 by the power transmission means 55, and the second roller member 53 rotates. At this time, a predetermined frictional force is generated on the outer peripheral surface of the second roller member 53 and the side surface of the pushing member 51 according to the rotational speed of the second roller member 53.

  As shown in FIG. 4A, when the delivery speed of the optical fiber 2 is slow, the rotational speeds of the first roller member 52 and the second roller member 53 are slow, and the outer peripheral surface of the second roller member 53 and the pushing member The frictional force generated on the side surface of 51 is smaller than the biasing force by the spring member 54. Therefore, the pushing member 51 is in a state where the adhesive supply pipe 7a (7b) is pushed. Thereby, the cross-sectional area of the adhesive supply pipe 7a (7b) is small, and the supply amount of the adhesive 3 (A liquid 3a and B liquid 3b) is reduced.

  On the other hand, as shown in FIG. 4B, when the delivery speed of the optical fiber 2 is fast, the rotational speeds of the first roller member 52 and the second roller member 53 are also fast, the outer peripheral surface of the second roller member 53, The frictional force generated on the side surface of the pushing member 51 is larger than the urging force by the spring member 54. As a result, the pushing member 51 is moved in a direction away from the adhesive supply pipe 7 a (7 b) against the urging force of the spring member 54. And the adhesive supply pipe | tube 7a (7b) returns to an original shape, a cross-sectional area becomes large, and the supply amount of the adhesive agent 3 (A liquid 3a and B liquid 3b) increases.

  The configuration of the adhesive supply amount adjusting device 50 is not limited to the above configuration, and may be another configuration.

  As shown in FIG. 5, the cable laying machine 1 further includes a roll member 60 around which the optical fiber 2 (cable) is wound, and an adhesive supply device 70 that stores and pressure-feeds the adhesive 3. The roll member 60 and the adhesive supply device 70 are joined together so that an operator can carry the work on his / her back.

  As shown in FIG. 6, the roll member 60 includes a casing 62 in which a delivery opening 61 is formed, and a winding shaft 63 provided therein. The surface of the winding shaft 63 is made of a material that hardly generates frictional force with the optical fiber 2, and is configured to be sequentially pulled out from the delivery opening 61 when the optical fiber 2 is pulled. Has been.

  As shown in FIG. 7, the adhesive supply device 70 includes a tank 71 that stores the adhesive 3 and a compressor 72 (not shown in FIG. 5) that pumps the adhesive 3. The tank 71 includes a partition plate 73 therein and is divided into two storage tanks 71a and 71b. Supply ports 75 and 75 having opening / closing valves 74 and 74 are formed at the bottoms of the storage tanks 71a and 71b of the tank 71, respectively. At the upper ends of the storage tanks 71a and 71b, pressure-feed air ports 76 and 76 for injecting the pressure-feed air from the compressor 72 are formed, respectively. Filters 77 and 77 are provided below the pressure air ports 76 and 76, respectively, so that the liquid A 3a and the liquid B 3b constituting the adhesive 3 are not scattered into the pressure air ports 76 and 76, respectively. Yes. The filters 77 and 77 are made of a material that does not transmit the A liquid 3a and the B liquid 3b but transmits the compressed air. Adhesive inlets 78 and 78 for replenishing the A liquid 3a and the B liquid 3b are formed on the wall surfaces of the storage tanks 71a and 71b below the filters 77 and 77, respectively. The adhesive injection ports 78 and 78 are provided with lids (not shown) that can be freely opened and closed.

  The compressor 72 includes a compression chamber 80 that compresses air with a piston 79, and air delivery ports 81 and 81 that are connected to the compression chamber 80 and that send pressurized air to the tank 71. The air delivery ports 81 and 81 are formed to be openable and closable, and are configured to switch on / off the delivery of the pressurized air. The air supply outlets 81 and 81 of the compressor 72 and the pressure supply air ports 76 and 76 of the tank 71 are connected by pressure supply air pipes 82 and 82.

  Next, the operation will be described while explaining the laying process performed using the cable laying machine 1 having the above-described configuration.

  When using such a cable laying machine 1, first, the optical fiber 2 is pulled out from the roll member 60 and inserted from the proximal end portion of the inner cylinder 30 to the distal end portion side. At the same time, the compressor 72 of the adhesive supply device 70 is operated, and the on-off valves 74 and 74 of the tank 71 are opened. At this time, the compressor 72 is set to pump air at a constant pressure, and the opening amounts of the on-off valves 74 and 74 are adjusted to adjust the outflow amounts of the liquid A 3a and the liquid B 3b.

  And the trigger 44 provided in the trunk | drum 10 is pulled, and the stopper apparatus 40 is made into a supply start state. As a result, the adhesive supply pipes 7 a and 7 b are opened, and the A liquid 3 a and the B liquid 3 b of the adhesive 3 are supplied into the body portion 10. Here, in the adhesive supply amount adjusting device 50, the adhesive supply pipes 7a and 7b are pushed in by the pushing member 51. However, the A liquid 3a and the B liquid 3b of the adhesive 3 are little by little. 6 flows into. Then, in the adhesive supply path 6, the A liquid 3 a and the B liquid 3 b are mixed to form the adhesive 3. After pulling the trigger 44 for a predetermined time, the trigger 44 is returned to its original state and the supply of the adhesive 3 is stopped (state shown in FIG. 2). At this time, the moving member 35 provided at the proximal end portion of the inner cylinder 30 is in a state of moving toward the distal end side, and the inner cylinder 30 is urged toward the distal end side by the spring member 34. As a result, the distal end portion of the inner cylinder 30 is pressed so as to block the delivery port 22 at the distal end of the outer cylinder 20, so that the adhesive 3 does not leak from the adhesive supply path 6.

  Thereafter, the gripping portion 35b is gripped and the moving member 35 is rotated around the axis, thereby moving the moving member 35 to the proximal end side. In accordance with this, the inner cylinder 30 moves to the proximal end side, and the distal end of the inner cylinder 30 moves to the inside of the delivery port 22 of the outer cylinder 20. As a result, the adhesive supply path 6 is opened, and the adhesive 3 can be supplied from the delivery port 22 (state shown in FIG. 1). At this time, at the delivery port 22, when the optical fiber 2 is sent out at the axial center portion, the adhesive 3 is pushed out around the optical fiber 2.

  While pulling the trigger 44, the tip of the optical fiber 2 is arranged at a predetermined position of the measurement target structure 4a, and the tip of the body part 10 is moved along the measurement target structure 4a. 3 supply is started. In this way, since the tip of the optical fiber 2 is fixed to the measurement target structure 4a, the optical fiber 2 is pulled from the roll member 60, and is automatically pulled out and sequentially inserted into the inner cylinder 30. And supplied to the measurement target structure 4a. At this time, in the adhesive supply amount adjusting device 50, the supply amounts of the liquid A 3a and the liquid B 3b are adjusted according to the supply speed of the optical fiber 2, and an appropriate amount of the adhesive 3 is supplied. It becomes. That is, when the supply speed of the optical fiber 2 is high, the supply amount of the adhesive 3 is increased, and when the supply speed of the optical fiber 2 is low, the supply amount of the adhesive 3 is decreased. A constant amount of adhesive 3 is always supplied per unit length. As a result, an adhesive layer having a constant thickness is formed around the optical fiber 2, and the optical fiber 2 is bonded to the measurement target structure 4a with a uniform adhesive force.

  As described above, according to the present embodiment, the adhesive 3 can be supplied to the optical fiber 2 from the adhesive supply path 6 while supplying the optical fiber 2 (cable) from the cable insertion path 5. Since the optical fiber 2 can be laid continuously only by moving the tip portion of 10 along the measurement target structure 4a (laying target object 4), the laying operation can be performed very easily. Further, since the optical fiber 2 and the adhesive 3 can be laid together, the operator does not need to hold the adhesive in his hand, the work load is reduced, and the laying work can be performed while holding the long-distance optical fiber 2. . Furthermore, since the roll member 60 around which the optical fiber 2 is wound is provided, the very long distance optical fiber 2 can be laid without being divided. Therefore, the fusion work of the optical fiber 2 can be significantly reduced or eliminated, the construction labor and time can be reduced, and a reduction in measurement accuracy can be prevented.

  Moreover, the trunk | drum 10 of the cable laying machine 1 has the outer cylinder 20 which comprises the outer shell, and the inner cylinder 30 provided with the predetermined clearance gap inside this outer cylinder, 30, the cable insertion path 5 is configured in the internal space, and the adhesive supply path 6 is configured in the gap between the inner cylinder 30 and the outer cylinder 20, so that the body portion 10 is configured with a simple structure. It is possible to reduce the labor for manufacturing the cable laying machine 1, and it can be easily manufactured, and the manufacturing cost can be reduced.

  Further, the outer cylinder 20 is formed in a tapered shape whose diameter decreases toward the distal end side, and the inner cylinder 30 has an inclination angle whose outer peripheral surface of the distal end is smaller than the inclination angle of the taper of the outer cylinder 20. Since the diameter of the inner cylinder 30 is reduced and the maximum diameter portion is formed in a tapered shape larger than the opening diameter of the distal end of the outer cylinder 20 and is fixed to the outer cylinder 20 so as to be movable in the axial direction. Since the adhesive supply path 6 can be freely opened and closed simply by moving it to the position, leakage of the adhesive 3 to the outside can be prevented, and the cable laying machine 1 can be easily carried and stored. .

  In addition, since a proximal end portion of the inner cylinder 30 is fixed to a moving member 35 that is screwed into the female screw 24 on the inner peripheral surface of the outer cylinder 20 and moves in the axial direction by rotating around its axis. Since the moving member 35 moves in the axial direction with respect to the outer cylinder 20 simply by rotating around the axis, the inner cylinder 30 can be easily moved in the axial direction. Furthermore, since the spring member 34 is provided at the proximal end portion of the inner cylinder 30, the adhesive supply path 6 can be reliably closed.

  Moreover, since the stopper device 40 is provided in the adhesive supply pipes 7a and 7b, the supply of the adhesive 3 can be surely stopped, the leakage of the adhesive 3 can be prevented, and the cable laying machine 1 It can be easily transported and stored. The adhesive supply pipes 7a and 7b are made of an elastic material, and the stopper device 40 blocks the flow paths in the adhesive supply pipes 7a and 7b by pressing the side surfaces of the adhesive supply pipes 7a and 7b. Since the supply of the liquid A 3a and the liquid B 3b (adhesive 3) is stopped, it is not necessary to perform special processing on the adhesive supply pipes 7a and 7b, and the stopper device 40 is also simple. Since it becomes a structure, the cable laying machine 1 can be manufactured easily.

  Further, the adhesive supply pipes 7a and 7b are provided with an adhesive supply amount adjusting device 50 for adjusting the supply amounts of the liquid A 3a and the liquid B 3b (adhesive 3) according to the delivery speed of the optical fiber 2. Therefore, a constant amount of the adhesive 3 can always be supplied with respect to the length of the optical fiber 2 without depending on the skill of the worker. Therefore, uneven coating of the adhesive 3 can be eliminated, the adhesive strength of the optical fiber 2 to the measurement target structure 4a can be increased, and when the appearance of the measurement target structure 4a occurs, Since strain is reliably transmitted to the fiber 2, the measurement accuracy in strain measurement using an optical fiber can be increased.

  The adhesive supply amount adjusting device 50 includes a pressing member 51 urged by the adhesive supply pipes 7a and 7b, a first roller member 52 that contacts the optical fiber 2, and a second roller that contacts the pressing member 51. Since the power transmission means 55 that connects the member 53 and the first roller member 52 and the second roller member 53 is configured, the adhesive supply pipes 7a and 7b are not specially processed. Further, since the adhesive supply amount adjusting device does not need to be provided with complicated equipment such as a control device, it has a mechanical and simple structure, so that the cable laying machine 1 can be manufactured easily and inexpensively.

  As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning of this invention, a design change is possible suitably. For example, in the present embodiment, the trunk portion 10 of the cable laying machine 1 has a double tube structure of the outer cylinder 20 and the inner cylinder 30, but is not limited to this, and the cable is inserted into the shaft center portion. The structure which has a channel | path and has a hole-shaped adhesive supply path around it may be sufficient.

  Moreover, in the said embodiment, although the adhesive agent 3 is supplied so that the circumference | surroundings of the optical fiber 2 may be covered, it is provided in the measurement object structure 4a side (laying object 4 side) of the optical fiber 2 at least. Thus, it is sufficient that the optical fiber 2 can be bonded to the measurement target structure 4a.

  In the above-described embodiment, the case where the optical fiber 2 is laid on the measurement target structure 4a has been described as an example. However, the cable is not limited to the optical fiber 2, and other cables such as a power line and a communication line are used. Of course, the present invention can also be applied to a linear member.

  Furthermore, in the said embodiment, although the adhesive agent 3 is a two-component mixed type, this invention is applicable even if it is a one-component type or a mixed type of three or more components.

It is sectional drawing which showed the state at the time of the laying of the best form for implementing the cable laying machine which concerns on this invention. It is sectional drawing which showed the state at the time of use interruption of the best form for implementing the cable laying machine which concerns on this invention. (A) which showed the moving member of the cable laying machine which concerns on this invention is a rear view, (b) is sectional drawing. It is the side view which showed the adhesive supply amount adjustment apparatus of the cable laying machine which concerns on this invention, Comprising: (a) is the figure which showed the state where the sending speed of an optical fiber is slow, (b) is the sending speed of an optical fiber. It is the figure which showed the quick state. It is the perspective view which showed the laying operation | work using the cable laying machine which concerns on this invention. It is sectional drawing which showed the roll member of the cable laying machine which concerns on this invention. It is sectional drawing which showed the adhesive agent supply apparatus of the cable laying machine which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cable laying machine 2 Optical fiber 3 Adhesive 4 Structure to be measured 5 Cable insertion path 6 Adhesive supply path 7a Adhesive supply pipe 7b Adhesive supply pipe 10 Body part 20 Outer cylinder 30 Inner cylinder 31a Maximum diameter part 35 Moving member 40 Stopper Device 50 Adhesive Supply Amount Adjusting Device 51 Pushing Member 52 First Roller Member 53 Second Roller Member 60 Roll Member 70 Adhesive Supply Device

Claims (10)

A cable laying machine for laying cables such as optical fibers, power lines and communication lines on an object to be laid with an adhesive,
Comprising a cylindrical trunk provided with a cable insertion path through which the cable fed to the laying object is inserted;
An adhesive supply path for supplying an adhesive to at least the laying object side portion of the cable that opens at the sending side end of the cable insertion path and is sent out to the laying object is formed in the trunk portion. A cable laying machine characterized by that. The cable is an optical fiber for measuring strain of a structure,
2. The cable laying machine according to claim 1, wherein the laying target object is a general measurement target structure including a tunnel, a bridge, a dam, or the like in which strain measurement is performed by the optical fiber. The barrel portion includes an outer cylinder that forms an outer shell thereof, and an inner cylinder that is provided with a predetermined gap inside the outer cylinder,
In the space inside the inner cylinder, the cable insertion path is configured,
The cable laying machine according to claim 1 or 2, wherein the adhesive supply path is configured by a gap between the inner cylinder and the outer cylinder. The outer cylinder is formed in a tapered shape whose diameter decreases toward the distal end side,
The inner cylinder is formed in a tapered shape in which the outer peripheral surface of the tip portion is reduced in diameter at an inclination angle smaller than the taper inclination angle of the outer cylinder and the maximum diameter portion is larger than the tip opening diameter of the outer cylinder, The cable laying machine according to claim 3, wherein the cable laying machine is fixed to the outer cylinder so as to be movable in the axial direction. The moving member which moves to an axial direction is fixed to the base end part of the said inner cylinder by screwing on the inner peripheral surface of the said outer cylinder, and rotating to the surroundings of the axis | shaft. Or the cable laying machine of Claim 4. An adhesive supply pipe for supplying the adhesive is connected to the adhesive supply path,
The cable laying machine according to any one of claims 1 to 5, wherein the adhesive supply pipe is provided with a stopper device for stopping the supply of the adhesive. The adhesive supply pipe is made of an elastic material,
The stopper device is configured to block supply of the adhesive by closing a flow path in the adhesive supply tube by pressing a side surface of the adhesive supply tube. The cable laying machine described in 1. The adhesive supply amount adjusting device that adjusts the supply amount of the adhesive according to the feeding speed of the cable is provided in the adhesive supply pipe. Cable laying machine. The adhesive supply pipe is made of an elastic material,
The adhesive supply amount adjusting device includes a pressing member urged by the adhesive supply pipe, a first roller member that contacts the cable, and a rotational force of the first roller member that contacts the pressing member. The cable laying machine according to claim 8, further comprising: a second roller member that is transmitted and pushes back the pushing member against a biasing force by a frictional force with the pushing member. The cable laying machine according to any one of claims 1 to 9, further comprising a roll member around which the cable is wound and an adhesive supply device that stores and pressure-feeds the adhesive.

Images