JP2010004452A - Antenna tower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna tower mechanism which reduces operation halt time in a maintenance work of the antenna apparatus and allows to save expenses. <P>SOLUTION: A radome 2 is equipped on top part of the antenna tower 1. Through a circular opening section created on attaching part on the radome 2 to the top part of the antenna tower 1, an antenna apparatus 3 placed on an antenna setting floor surface (top panel) 5 with almost same diameter as the opening section is stored into the radome 2 and operated. On a center section of the antenna tower 1, an elevating device 4 for lifting or lowering the top panel 5 on which the antenna device 3 is placed between the top of the antenna tower 1 and the ground is equipped. When operation of the antenna device 3 needs to be stopped for maintenance work of the equipments, the elevating device 4 is used to let down the antenna device 3 along with the top panel 5 to the ground in order to perform the maintenance work for the antenna device 3 on the ground. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a configuration of an antenna tower in which an antenna device is installed, and more particularly to an antenna tower suitable for installation of a radome-equipped antenna used in a radar or the like.

  Radar antenna devices used in fixed stations are often housed in a radome due to environmental resistance, secrecy, etc., and are installed and operated on the roof of a high-rise building such as a steel tower. At that time, it is important to reduce the operation stop time of the antenna device that occurs in maintenance work such as inspection and replacement of parts used in the antenna device, and to reduce the cost required for the work. It is.

  3 to 4 show a conventional method in the case of performing maintenance work such as inspection of equipment used for the antenna device and replacement of parts.

  In the method of FIG. 3, the radome 2 is disassembled, and the equipment of the antenna device 3 is carried in and out by the large crane 6 from outside to perform maintenance work. In the case of this method, the work of disassembling the radome has a problem that the operation scale of the antenna device is increased due to the increase in construction scale and the influence of the weather, and the cost required for the work is increased, and a large crane 6 is prepared. There is also a problem that must be done.

  In the method shown in FIG. 4, the radome 2 is not dismantled, and the equipment 8 of the antenna device is carried in and taken out from the entrance / exit provided on the floor surface where the antenna device is installed using a special hoist crane 7. Is done. Therefore, the work can be performed without disassembling the radome.

  However, in the case of this method, it is necessary to provide an entrance for carrying in and carrying out the equipment 8 of the antenna device on the floor where the antenna device at the top of the antenna tower 1 is installed, and the antenna device carried in and out. Since the size of the equipment 8 is limited to the size of the entrance / exit, it is necessary to disassemble the radome when carrying in / out the large antenna equipment.

  On the other hand, in Patent Document 1, there is no need to dismantle the radome when carrying equipment into and out of the radome, and lifting the parts to the top of the antenna device, and maintaining and maintaining the antenna without installing a crane inside the radome. To enable work, an antenna, a counterweight that balances the antenna, a counterweight support structure that connects the antenna and the counterweight, and a base that supports the antenna, counterweight, and counterweight support structure And a winch that is provided at the base and winds up a heavy object via a wire guided by wire guide means disposed at any position of the counterweight, the counterweight support structure, or the base 4. The configuration is described.

  Patent Document 2 includes an array antenna attached to the wall surface of the building, a radome attached to the wall surface of the building so as to cover the array antenna, and the building wall surface inside or outside the radome, A hoist installed at a position off the front of the array antenna, a maintenance gondola that is suspended from the hoist by a suspension rope and moves up and down the array antenna, and removed from the front of the array antenna The building is equipped with a gondola guide that guides the maintenance gondola so that the array antenna surface is not damaged when the maintenance gondola is raised and lowered, and has an entrance that allows access to the radome during maintenance. By removing the radome, you can remove the radome during maintenance of the wall-mounted array antenna. Configuration allowing maintenance without is described.

JP 2001-144516 A JP 2003-163518 A

  According to the maintenance work method shown in FIG. 4 or the methods described in Patent Documents 1 and 2, the antenna maintenance work can be performed without removing the radome. However, since the size of equipment carried in and out for maintenance work is limited by the size of the entrance and exit to the antenna mounting part, it is difficult to carry in and out large antenna equipment. When a large and large antenna equipment must be carried into and out of the antenna mounting portion, the radome must be disassembled.

  Furthermore, the conventional antenna maintenance work is a work with a high degree of danger because it involves work at a high place, and there is also a problem in safety management of workers.

  The objective of this invention is providing the structure of the tower for antenna installation which can solve the subject mentioned above.

  The present invention provides an antenna tower in which an antenna device is installed, an antenna installation floor (top plate) on which the antenna device is installed on the antenna tower, and the antenna installation floor on the top and the ground surface of the antenna tower. It is characterized by having an elevating device that can be moved up and down.

  In the antenna tower of the present invention, since the entire antenna device can be moved up and down between the top of the antenna tower and the ground, operations such as assembly, maintenance, and dismantling of antenna equipment can be performed on the ground. It is possible to avoid the dangers caused by work.

  Even if the antenna device is housed in the radome during operation, the entire antenna device can be moved out of the radome and lowered to the ground during maintenance work of the antenna device. When there is a need to carry in and out large equipment accompanying work, it can be handled without using a large crane or dismantling the radome.

  In addition, since it is not necessary to disassemble the radome during maintenance work of the antenna device, it is possible to shorten the time required for the maintenance work and to reduce the cost required for the maintenance work.

  FIG. 1 is a schematic perspective view of an antenna tower showing an embodiment of the present invention. FIG. 1 (a) shows a state where the antenna device is operated, and FIG. 1 (b) shows how the antenna device is operated. In order to stop and perform maintenance work of the antenna device, the antenna installation floor surface is lowered from the top of the antenna tower to the ground.

  A radome 2 is mounted on the top of the antenna tower 1 of the present embodiment, and the antenna installation floor surface is substantially the same diameter as the circular opening formed in the attachment portion of the radome 2 to the top of the antenna tower 1. A (top plate) 5 is provided. When the antenna device 3 is mounted on the top plate 5 and accommodated in the radome 2, the circular opening is closed by the top plate 5 (FIG. 1A).

  In the central part of the antenna tower 1, an elevating device 4 that elevates and lowers the top plate 5 on which the antenna device 3 is mounted between the top of the antenna tower 1 and the ground surface is equipped. When the maintenance of the equipment is performed with the operation of the antenna device 3 being stopped, the lifting and lowering device 4 lowers the antenna device 3 to the ground together with the top plate 5 to maintain the antenna device 3 on the ground. (Fig. 1 (b)).

  FIG. 2: has shown the schematic which looked at from the side about two different examples of the raising / lowering apparatus 4 which raises / lowers the antenna installation floor surface (top plate) 5 in this embodiment, respectively, and FIG. FIG. 2 (b) shows an elevating device using a method for raising and lowering the top plate 5 using a crank mechanism, an extendable arm, and a driving device. Show.

  In the lifting device that moves the top plate 5 up and down by the wire and winch shown in FIG. 2A, the wire 4-3 that moves up and down the top plate 5 on which the antenna 3 is mounted is arranged on the top of the antenna tower 1 and on the ground side. It is installed on the pulley 4-4, and is equipped with a guide rail 4-1 to prevent the top plate 5 from shaking when it moves up and down and a balance weight 4-5 to keep the weight balanced. Has been. By driving the winch 4-2 and rotating the wire 4-3 in one direction or the other direction, the top plate 5 is moved up and down between the top of the antenna tower 1 and the ground.

  In the lifting device that moves the top plate 5 up and down using the crank mechanism, the telescopic arm, and the driving device shown in FIG. 2B, the crank device 4-8 that moves up and down the top plate 5 on which the antenna device 3 is mounted is provided. It is provided between the lower surface of the plate 5 and the ground, and this crank device 4-8 expands and contracts by using the drive device 4-6 and the extendable arm 4-7 to provide a mechanism for raising and lowering the top plate 5. Yes. Also in this case, a guide rail 4-1 is provided for preventing the top plate 5 from shaking when it is moved up and down.

  Next, assembly of the lifting device, antenna installation, and maintenance operation in the antenna tower of this embodiment will be described with reference to FIGS.

  After the assembly of the external skeleton of the antenna tower 1 is completed, each member constituting the lifting device 4 shown in FIG. A radome 2 is attached to the top of the antenna tower 1. Next, after installing the antenna device 3 on the top plate 5 with the top plate 5 lowered to the ground surface by the lifting device 4, the antenna device 3 is assembled and installed on the top plate 5 lowered to the ground. After that, the top plate 5 is raised to the top of the antenna tower 1 by the lifting device 4 to accommodate the antenna device 3 in the radome 2. In this state, the top plate 5 is fixed to the top of the antenna tower 1 by an appropriate fixing means (FIG. 1A). The antenna device 3 is operated in this state.

  Thereafter, when it becomes necessary to perform maintenance work on the antenna device 3, the operation of the antenna device 3 is stopped, the top plate 5 on which the antenna device 3 is installed is released, and the lifting device 4 The top plate 5 is lowered to the ground (FIG. 1 (b)), and maintenance work of the antenna device 3 is performed on the ground. At that time, antenna equipment for maintenance work of the antenna device 3 can be carried in and out using a large doorway provided on the ground side of the antenna tower 1.

  When the antenna device 3 is maintained and serviced again, the top plate 5 on which the antenna device 3 is installed is raised to the top of the antenna tower 1 by the lifting device 4, and the top plate 5 is moved to the antenna tower 1. If fixed to the top, the antenna device 3 is housed in the radome 2 and can be operated.

  When the antenna device 3 is located at the top of the antenna tower 1 and is in an operable state, a means for fixing the top plate 5 on which the antenna device 3 is mounted to the top of the antenna tower 1 is provided. The stability of the antenna device 3 can be improved. As the fixing means, for example, it is possible to realize by any means that detects that the top plate 5 is raised and positioned at the top of the antenna tower 1 and automatically fixes it, and automatically releases the fixing according to the releasing instruction. .

  In the present embodiment, by raising and lowering the entire antenna device 3, it is possible to accommodate and operate the radome provided at the top of the antenna tower 1, or to perform maintenance work on the antenna device 3 on the ground. Large equipment can be carried in and out without the need to dismantle the radome. Furthermore, it is possible to carry out operations such as assembling and dismantling equipment on the ground, avoiding the danger of working at heights.

  Further, according to the present embodiment, it is not necessary to disassemble the radome during the maintenance work of the antenna device 3, so that the time required for the maintenance work can be shortened and the cost required for the maintenance work can be reduced. .

  In addition, although the said embodiment demonstrated the case where the radome was equipped in the top part of the antenna tower 1, this invention is applicable also to the antenna tower which is not equipped with the radome.

  Even in that case, since the antenna equipment can be carried in and out on the ground, there is no need to use a large crane or the like for lifting the antenna equipment to the top of the antenna tower 1, and maintenance work should also be carried out on the ground. Therefore, the effect of avoiding the danger in high-altitude work can be obtained.

  Further, in an antenna tower not equipped with a radome, the antenna device is moved to the ground when not in operation and stored inside the antenna tower, and the antenna installation floor (top plate) 5 is moved to the top of the antenna tower during operation. Thus, it is possible to obtain effects such as environmental resistance and confidentiality.

It is a schematic perspective view of the antenna tower which shows embodiment of this invention. It is the schematic which looked at the antenna raising / lowering apparatus in this embodiment from the side. It is a figure explaining the prior art at the time of performing maintenance work of an antenna. It is a figure explaining the other prior art at the time of performing maintenance work of an antenna.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Antenna tower 2 Radome 3 Antenna apparatus 4 Lifting apparatus 4-1 Guide rail 4-2 Winch 4-3 Wire 4-4 Pulley 4-5 Balance weight 4-6 Drive apparatus 4-7 Telescopic arm 4-8 Crank apparatus 5 Antenna Installation floor (top plate)
6 Crane 7 Hoist crane 8 Antenna equipment

Claims (8)

In the antenna tower where the antenna device is installed,
The antenna tower includes an antenna installation floor surface (top plate) for installing the antenna device, and an elevator device that allows the antenna installation floor surface to move up and down between the top of the antenna tower and the ground surface. Characteristic antenna tower.   The antenna tower according to claim 1, wherein a radome that covers the antenna when the antenna device is installed on the top of the antenna tower is installed at the top of the antenna tower.   The antenna tower according to claim 1, wherein maintenance work of the antenna device is enabled in a state where the antenna installation floor surface is lowered to the ground by the lifting device.   Means for moving the antenna installation floor to the top of the antenna tower by the lifting device during operation of the antenna device, and moving the antenna installation floor to the ground by the lifting device when the antenna device is not in operation. The antenna tower according to any one of claims 1 to 3, wherein the antenna tower is provided.   5. The apparatus according to claim 1, further comprising means for fixing the antenna installation floor to the top of the antenna tower when the antenna installation floor is located at the top of the antenna tower. The antenna tower of any one of Claims.   The elevating device is connected to the antenna installation floor and is set according to the antenna tower ascending / descending instructions and a wire stretched over a pulley placed on the top of the antenna tower and on the ground. The antenna tower according to any one of claims 1 to 5, wherein the antenna tower is configured by a winch that rotationally drives the wire in a rotating direction.   The lifting device includes a crank device that is provided between the antenna installation floor surface and the ground to elevate and lower the antenna installation floor surface, and an extension arm and a drive device that drive expansion and contraction of the crank device. The antenna tower according to any one of claims 1 to 5, wherein the antenna tower is provided. The antenna tower according to any one of claims 1 to 7, wherein a guide rail is provided to prevent shaking when the antenna installation floor is lifted and lowered by the lifting device.

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