JP3946828B2 - Telephone pole - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a utility pole in which a closure for protecting a connection portion of a communication cable such as an optical cable, in particular, a closure for an optical cable is provided.
[0002]
[Prior art]
In general, in the field of telecommunications, a cable is terminated using an aerial closure, etc., in a connection part that draws in an incoming optical cable or power line and performs connection branch wiring, and one cable is another one or more cables. And a drop wire to each individual telephone subscriber is connected.
Some aerial closures can only provide protection against excessive sun rays, rain or insects and animals, but some can allow air to pass and can drain water when water accumulates inside.
However, in any case, except for the case of buried cables, the cables should be installed in high places with utility poles so that they cannot be easily touched by outside wires. In addition to ground pulling work, it is necessary to pull in the cable, and maintenance, repair, or removal work is also done on the ground, and the aerial closure is exposed to the sun, wind and rain, etc. A structure having a structure for hermetically protecting the cable connection portion under the conditions of −30 ° C. to + 40 ° C. is often used.
[0003]
[Problems to be solved by the invention]
In conventional overhead enclosures that protect cable connections, they are used as a mounting member for utility poles or for overhead cables wired to utility poles. In addition, it is necessary to pull in the cable by working on the ground, and each work such as maintenance, repair, or removal also becomes work on the ground, and it is not easy to install equipment and connect the wiring. In addition to the safety issues, the aerial closures are exposed to the sun, wind and rain, etc. It tends to be complicated. Also, in order to prevent the deformation of the closure, it is necessary to maintain rigidity and prevent intrusion of hot air and moisture, so that the components of the closure are tightly coupled with each other and the cable is sufficiently secured. If a special material is provided, the production becomes complicated and expensive, and there are various problems in terms of durability, airtightness management, tightening force management and assembly workability.
The present invention is intended to eliminate these conventional drawbacks, and uses a cable connection closure or the like as a utility pole that is safely incorporated inside a hollow utility pole. It is possible to realize a safe work on the ground and a reduction in the work fatigue while significantly improving the external environment by protecting the electric pole and harmonizing with the urban landscape. Connection wiring work and operation of the line machine can be easily performed to improve work efficiency, connection maintenance of each device is safe, and the closure device is protected even under harsh environmental conditions to provide a highly safe utility pole The object is to provide a simple and inexpensive configuration.
[0004]
[Means for Solving the Problems]
The present invention is a utility pole in which a closure provided with a cable connecting portion and a cable retaining metal fitting is incorporated in a power pole of a hollow power pole, and an opening communicating with the power pole hollow portion of the power pole is formed in the power pole. A door with a vent in the opening is provided so as to be openable and closable, and an exhaust port communicating with the hollow portion of the electric pole is formed at the tip of the electric pole, and a cable connecting portion having a cable retaining metal fitting is provided at the opening . The closure is installed via a support column and bracket for sliding in the vertical and longitudinal directions, improving management and assembly and cable connection work, and utilizing air convection in the utility pole It is a utility pole that is environmentally friendly and protects closures such as AO closures and π-ONU closures, and is in harmony with the urban landscape.
[0005]
In the present invention, the electric pole is composed of a steel pipe connecting column upper pipe and a steel pipe connecting column lower pipe, a reinforcing covering material is provided around the opening, and a cable introducing wrapper pipe is provided at the exhaust port at the tip of the electric pole. A cable lead-in pipe is suspended from the power pole hollow portion, and the slide column is a C-shaped cross section, and the slide piece is inserted into the rail. The bracket is slidable in the front-rear direction via the handle on the slide piece, and the closure is moved in the up-down direction and the front-rear direction with respect to the slider support column and exposed to the opening. The purpose is to simplify safe ground work and improve work efficiency for wiring work and maintenance work.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the embodiment of the present invention, the cable is connected and fixed to a cable connecting device having a cable retaining bracket incorporated in the lower part of the utility pole by drawing the outdoor line from the exhaust port at the tip of the utility pole from the direction of 360 degrees. Since an opening communicating with the hollow portion of the utility pole is provided, the cable connection device is exposed to the opening, and a door having a vent hole is provided in the opening so as to be openable and closable. This creates convection in the utility pole, naturally dissipates heat from the exhaust port through the periphery of the cable connection device, protects the closure even under harsh environmental conditions, and enhances safety. Furthermore, the door is opened, and the cable connecting device that is slidably arranged via the support column and bracket for sliding is moved in the vertical direction and the front-rear direction facing the opening, and the AO closure of the cable connecting portion, By moving the closure such as π-ONU closure to a position where the opening near the ground is easy to work, it is possible to efficiently perform hand connection on the ground without obstacles and other wiring work and installation work of equipment, Core wire confirmation work can also be facilitated. In addition, if the cable connection device is restored and locked after wiring is complete, and the door is closed and locked, the cable connection section is built in and protected safely without being touched by a third party, and all cables are wired in the power pole. In addition, non-skilled construction with minimal tools can be performed, and reliable and safe wiring work can be performed without adversely affecting the transmission characteristics.
Note that the closure device can be easily deployed around the hinge to open the sleeve and simplify the internal connection work.
[0007]
【Example】
A The present invention is 1 to 5 in the indicated cable connecting part provided with a closure device A, a utility pole 1 incorporating B within a utility pole of a hollow utility pole, communicating with the utility pole hollow portion 1 ₁ of the utility pole 1 the opening 2 is formed in the electric pole 1, provided with freely open and close the door 4 in the opening 2 a vent hole 3, forming the outlet portion 5 communicating with the utility pole hollow portion 1 ₁ a telephone pole tip to, obtained by mounting holding the cable connected to the cable connecting portions to said cable cocked fitting 6 drawn into the hollow portion 1 ₁ of the utility pole 1 from the outlet portion 5 of the electric pole tip, environmental leverages air convection The utility pole 1 is designed to protect the closure devices such as AO closure A and π-ONU closure B, and to harmonize with the cityscape.
[0008]
In this case, a sliding column of a C-shaped cross-section rail provided in the electric pole 1 so that the closures A and B are disposed in the opening 2 of the electric pole 1 so as to be slidable in the vertical direction and the front-rear direction. A bracket 8 is slidably mounted in the front-rear direction via a connecting rod 18 on a slide piece 17 that is slidably inserted into the bracket 7. The bracket 8 is provided with a handle 19 and closures A and B. The closure B is slidably mounted in the front-rear direction by a flange pin 15 fitted in the long hole 16 formed in 8 so as to be exposed at the opening 2. Further, the utility pole 1 is composed of a steel pipe joint upper pipe and a steel pipe joint lower pipe, and a reinforcing covering material 10 is provided around the opening 2 so that a cable is introduced into the exhaust port 5 at the front end of the power pole for bird damage. comprising a wrapper tube 11 preventing structure, the cable entry pipe 12 into the trumpet 11 and Tsushide deployment utility pole hollow portion 1 _1, draw outdoor line to secure the curvature (about 30 degrees or more) from the 360-degree direction At the same time, it passes through the vicinity of the opening 2 and is attached and held to the cable retaining bracket 6 so that the closures A and B can be slid in the front-rear direction and the vertical direction by the handle 19 of the bracket 8.
The bracket 8 can be safely slid by a one-touch stopper mechanism (not shown), for example, a locking structure of a freely projecting protrusion and a hole fitted therein, and connection maintenance of each device can be facilitated. It is like that. In this case, it may be provided relatively to the sliding facing surface, and may be provided on the sliding column 7 and the sliding piece 17 or on the sliding surface between the bracket 8 and the power pole fixing portion. Therefore, it is possible to realize secure fixing at the time of permanent installation (upper position) and when the work is lowered (lower position).
[0009]
The closures A and B include an AO closure A and a π-ONU closure B. The π-ONU closure B is attached to the bracket 8 and moved in the vertical direction and the front-rear direction with respect to the slider column 7. By being exposed at the opening 2, it is possible to efficiently perform hand connection on the ground free of obstacles, other wiring work, and installation work of devices, and the core wire checking work can be facilitated. It has become.
[0010]
The door 4 with the vent hole 3 is formed of a curved plate along the outer periphery of the utility pole 1 and is connected to the opening 2 by a hinge portion so as to be opened and closed. The convection in the utility pole is generated from the vent hole 3 of the door 4. It is possible to naturally dissipate heat from the exhaust port 5 around the cable connection device, protect the closure device in the utility pole even under harsh environmental conditions, and improve safety, and close the door 4 and lock it on the door if locking by turning the hooked handle 4 ₁ knob, the cable connection is furnished are safely protected without third party touch, cables also all wired into the telephone pole, the Nonsukiru construction by minimizing tool In addition, reliable and safe wiring work can be performed without adversely affecting the transmission characteristics.
The door 4 may be a sliding door type so as to slide along the outer periphery of the utility pole 1, or may be an openable / closable door having a structure that pulls out and rotates. In this case, it is considered that a sufficient working space can be secured at the time of work, and that it is possible to work in a comfortable posture, and the door 4 is preferably structured so as not to protrude from the column surface.
[0011]
When the temperature inside the utility pole 4 is higher than the outside air, the flow rate of the air current in the utility pole is accelerated by the chimney effect, and the amount of heat carried away by the air current is determined by the flow area of the tip of the utility pole, so the total area of the vent holes 3 is It is better to make it smaller than the channel area above the utility pole.
In this case, it is preferable that the trumpet pipe 11 at the exhaust port 5 at the tip of the utility pole floats upward and can be exhausted from the surrounding gap. In addition, the heat radiation from the closures A and B in the utility pole 4 is released to the outside of the utility pole by natural convection, but hot air tends to rise naturally and cold air tends to fall. Usually, wind of about 5 m / s (average 1 m / s) is blowing, and the temperature of the air current in the utility pole 4 is much lower than the outside air (2 ° C to 3 ° C). Can be effectively exhibited. For example, the π-ONU closure B itself is designed so as not to cause a thermal problem even in the environment where the installation pole temperature of the utility pole 4 is -30 ° C to 50 ° C.
In consideration of the amount of solar radiation and reflection, the ambient temperature of the π-ONU closure B is a condition where the humidity is 95% PH or less in consideration of the heat transfer rate of the outer wall of the utility pole and the amount of heat transfer to the ground. Thus, when illuminated by a light source equivalent to solar radiation with an amount of solar radiation of 3.3 (MJ / m ² h), an increase in the temperature near the π-ONU closure B housed in the utility pole could be suppressed.
[0012]
Still core case of the AO closure A and [pi-ONU closure B, slidably mounted on the result in the longitudinal direction plunge pin 15 fitted into the elongated hole 16 of the bracket 8 as shown in FIGS. 2 and 3 a connector holder for a plurality of connections are set within the open of the lid B _1, the connector holding unit pulls the cable core extra length derived from the accommodating a connector to turning, i.e. wound in a loop Using a substantially rectangular body that is divided and provided with a core wire extra-length storage section that is rotated and held, the cable presser pieces arranged at a predetermined interval are smoothly curved so that transmission characteristics are not adversely affected. Consideration is given so that it can be wound and held in a loop.
[0013]
Further, the trumpet tube 11 is provided in the exhaust port portion 5 of the utility pole 1 with a gap with a mounting rib 21 to prevent rain intrusion and bird damage, and the outdoor line has a predetermined curvature of 360 degrees. Considered to be retractable from.
Provided retraction tube 20 of R configuration can be ensured curvature of place in the fiber of the utility pole 1 may also allow retraction of the cable electric pole 1 from the middle to the hollow portion 1 _1. Furthermore, the outer periphery of the utility pole 1 is provided with a scaffold attachment portion 22 or the like as necessary to facilitate handling.
[0014]
【The invention's effect】
The present invention provides a power pole in which a closure having a cable connecting portion and a cable retaining bracket is incorporated in a power pole of a hollow power pole, and an opening communicating with the power pole hollow portion of the power pole is formed in the power pole. A door with a vent is provided so as to be openable and closable, and an exhaust port communicating with the hollow portion of the utility pole is formed at the end of the utility pole, and the cable connected to the cable connection portion is hollowed out from the exhaust port at the tip of the utility pole. The electric pole 1 is pulled into the shape portion and attached to and held by the cable holding fitting, and is positioned at the opening 2 of the electric pole 1 so that the closures A and B are slidably arranged in the vertical direction and the front-rear direction. A bracket 8 is slidable in the front-rear direction via a connecting rod 18 on a slide piece 17 slidably fitted into a slide column 7 of a C-shaped cross-section rail provided in the bracket. A handle 19 and closures A and B are mounted on the bracket 8, and the closure B is slidably mounted in the front-rear direction by a flange pin 15 fitted in a long hole 16 formed in the bracket 8. by, can safely and high density storage of core wire connecting portion, the core wire connection work, expose the core wire was fixed in the multi-fiber cable sheath to hold back metal was drawn opened the door opening hole portion Since the core wires connected to this are connected to each other by a connector, while keeping the connection length of the core wires in the core wire case along the core wire length storage portion , the connector is stored and locked in the closure. You can easily connect the core wires and check the connection status near the ground, and use a cable connection closure, etc., as a power pole that is safely built into the hollow power pole. It aims to protect the closure enhance boundary property and cityscape significantly improve the appearance environment streamlining utility pole in harmony with, the work fatigue alleviation of safety work on the ground can be achieved, via a bracket The closure can be moved into the utility pole by operating the handle, and the bracket is moved forward by the handle after being moved to the opening of the utility pole. Then, the closure is advanced over the bracket and the closure is moved in two stages by the moving bracket from the narrow utility pole. The cable can be pulled out and exposed to the outside of the utility pole , and the cable can be pulled in near the ground and connected at hand. Wiring machines can be easily operated to improve work efficiency, and the connection and maintenance of each device is safe. In addition, it protects the closure even under harsh environmental conditions, making it a highly safe utility pole. Non-skill work is possible with no need for tools, wiring can be arranged without affecting transmission characteristics in connection work, and organized storage can be secured with high reliability, and the cable connection closure can be moved inside the hollow power pole to prevent obstruction. It is possible to remarkably quickly cover the cable connection part by wiring work in a place where there is no place, and it is easy to handle and improves work efficiency. can do.
[Brief description of the drawings]
FIG. 1 shows an embodiment of the present invention, in which (a) is a perspective view of a use state thereof, (b) is a partially enlarged perspective view, and (c) is a perspective view showing an operation state thereof.
2A and 2B are attachment mechanisms of the closure device showing the example of FIG. 1, in which FIG. 2A is a perspective view before assembly, and FIG. 2B is a perspective view after assembly.
3 shows an enlarged state of the example of FIG. 2, in which (a) is a partially cut plan view, and (b) is a longitudinal sectional view taken along line AA. FIG.
4A and 4B show a usage state of an example of the present invention, where FIG. 4A is a front view, and FIG. 4B is an enlarged cut plan view along line BB.
5 is an enlarged view of a part of the utility pole in the example of FIG. 4, (a) is a partially cut front view of the tip, (b) is a partially cut front view of the utility pole opening, and (c). Is a front view thereof.
[Explanation of symbols]
A, B Closure 1 Telephone pole 1 ₁ Hollow part 2 Opening 3 Vent hole 4 Door 5 Exhaust port 6 Cable clamp 7 Slide column 8 Bracket 10 Reinforcement covering material 11 Trumpet pipe 12 Pull-in pipe 15 Flange pin 16 Long hole 17 Slide piece 18 Connecting rod 19 Handle

Claims (2)

Closure and a cable connecting portion and the cable holding back bracket 6 A, the utility pole 1 incorporating the B within a utility pole of a hollow utility pole, an opening 2 for communication with the utility pole hollow portion 1 ₁ of the utility pole 1 of the utility pole 1 below formed in, provided with a door 4 in the opening 2 a vent hole 3 openably formed an exhaust port unit 5 which communicates with the utility pole hollow portion 1 ₁ a telephone pole tip, is connected to the cable connecting portion that cable be one obtained by attaching held in the cable cocked fitting 6 drawn into the hollow portion 1 ₁ of the utility pole 1 from the outlet portion 5 of the electric pole tip closures a positioned in the opening 2 of the utility pole 1, B Through a connecting rod 18 to a slide piece 17 that is slidably fitted into a slide column 7 of a C-shaped cross-section rail provided in the electric pole 1 so that is slidably arranged in the vertical direction and the front-rear direction. Bracket 8 The bracket B is provided with a handle 19 and closures A and B and is slidable in the rear direction, and the closure B is moved in the front-rear direction by a flange pin 15 fitted in a long hole 16 formed in the bracket 8. A utility pole that is slidably mounted and is exposed at the opening 2 . The electric pole 1 is composed of a steel pipe connecting pipe upper pipe and a steel pipe connecting pipe lower pipe, a reinforcing coating material 10 is provided around the opening 2 , and a trumpet pipe 11 for introducing a cable into the exhaust port 5 at the tip of the electric pole. the equipped, utility pole according to claim 1, characterized in that the cable entry pipe 12 into the trumpet 11 and Tsushide deployment utility pole hollow portion 1 _1.

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