JP6163403B2 - Antenna moving apparatus and antenna moving method - Google Patents

Description

  The present invention relates to an antenna moving apparatus and an antenna moving method for horizontally moving a parabolic antenna unit installed in a ring fixed around a steel tower to a desired position along the ring.

  In general, a plurality of antennas having different heights and directions are installed in a stand-alone tower for mounting a parabolic antenna, depending on the purpose of use and frequency band. Conventionally, when installing a new antenna, removing an old antenna, or replacing one of the antennas with a new antenna, the target antenna is lifted from the ground using a crane or the like, or suspended to the ground. I was doing work such as unloading.

Japanese Patent Application No. 2012-077685

In recent years, the structure of antennas has become more precise, and the antenna to be removed or attached during the removal or attachment work of the antenna is not subject to damage caused by contact with the installed antenna or tower. There is a need to remove or attach the antenna. In addition to touching, it is also necessary to remove the radio wave emission direction (front side) of the installed operational antenna so that the target antenna to be attached is not shielded. There is a restriction on the route to be lifted from the vehicle so as to avoid installed antennas and the like.
Furthermore, the position where the antenna is lowered to the ground is often limited by the topography where the steel tower is located and the surrounding conditions (for example, the presence of buildings, trees, and other obstacles on the ground).
On the other hand, in the antenna removal work described in Patent Document 1, a wire rope is hung on a plurality of pulleys, and the hanging position and route of the target antenna are changed by adjusting the pulling condition of the wire rope. Yes. However, since this removal work adjusts the wire rope with a heavy antenna suspended, it is often subject to the experience and skill of the operator, and may be difficult in terms of work efficiency and accuracy, For this reason, there was a possibility that the target antenna may contact an antenna other than the target or a steel tower during the work.

  Accordingly, an object of the present invention is to provide an antenna moving device and an antenna moving method for horizontally moving a parabolic antenna unit installed in a ring fixed around a steel tower to a desired position along the ring.

  In order to solve the above-described problems, an antenna moving device according to the present invention is configured such that a parabolic antenna unit installed at a first position of a ring fixed around a steel tower is moved from the first position along the ring to the ring. An antenna moving device for moving to a second position, which is fixed along the ring from at least the first position to the second position, and the parabolic antenna unit is moved from the first position to the second position. And a movement assisting member fixed to the parabolic antenna unit and capable of engaging the parabolic antenna unit with the rail member.

  In the antenna moving device of the present invention, the rail member includes an installation plane extending in a horizontal direction, and the installation plane is arranged on a plane formed by one or more spacers arranged on the ring. Features.

  Further, in the antenna moving device of the present invention, the spacer is provided at at least two positions avoiding the protruding portion on the upper part of the ring, and the plane formed by the spacer is higher than the height of the protruding portion. It is characterized by.

  In the antenna moving device of the present invention, the rail member includes an antenna support portion that extends upward in the vertical direction, and the parabolic antenna unit is engaged with the antenna support portion by the movement assisting member. It is possible to move along.

  In the antenna moving device of the present invention, the movement assisting member includes a sliding plate having one side surface fixed to the upper part on the back side of the parabolic antenna unit and the other side surface having a pressing plate, In the space formed by the unit and the pressing plate, the lower surface of the sliding plate comes into contact with the upper surface of the antenna support portion, so that the parabolic antenna unit is engaged with the antenna support portion while the rail member is engaged. It is possible to move along.

  In the antenna moving device of the present invention, the rail member includes a plurality of divided rails, and the plurality of divided rails are a series of arcs along the ring from the first position to the second position. It is characterized by forming a shape.

  In the antenna moving device of the present invention, the movement assisting member is fixed to the parabolic antenna unit using a bolt hole provided for installing the parabolic antenna unit on the ring.

  In the antenna moving device of the present invention, the lower surface of the sliding plate is provided with a curved surface shape that reduces a contact area with the antenna support portion.

  In the antenna moving method of the present invention, the parabolic antenna unit installed at the first position of the ring fixed around the steel tower is moved from the first position to the second position of the ring along the ring. A rail member installation step of installing an arc-shaped rail member along the ring in a state where the parabola antenna unit is removed from the ring and lifted, and the parabola antenna in a state of being lifted from the ring A movement auxiliary member attaching step for attaching a movement auxiliary member to the unit, and sliding the parabolic antenna unit to which the movement auxiliary member is attached while engaging the rail member. An antenna moving step of moving from the first position to the second position; Characterized in that it comprises.

  According to the present invention, by providing the rail member that guides the movement of the parabolic antenna unit and the movement assisting member that enables the parabolic antenna unit to be engaged with the rail member, the parabolic antenna unit is accurately obtained with a simple configuration. It can be moved to the ground and taken down to the ground.

(A) is a side view showing a schematic configuration of a steel tower on which a parabolic antenna unit is installed, and (b) to (e) are first to fourth rings fixed to the steel tower and a parabolic antenna unit installed on each ring. It is a top view which shows each schematic structure. (A) is a top view which shows the structure of the parabolic antenna unit installed in the 2nd ring and 2nd ring of FIG. 1, (b) shows the coupling | bonding relationship of a parabolic antenna unit and a fixture, (a) It is sectional drawing in line IIB-IIB '. FIG. 2A is a plan view showing a state in which spacers are arranged with respect to the second ring of FIG. 2A, and FIG. 2B is a line IIIB of FIG. It is sectional drawing in -IIIB '. It is a figure which shows the structure of a spacer, (a) is a top view, (b) is a bottom view, (c) is the side view seen from the IVC direction of (a). (A) is a top view showing a state in which the rail member is arranged with respect to the second ring of FIG. 3 (a), and (b) shows a coupling relationship between the second ring, the spacer, and the rail member, Is a cross-sectional view taken along line VB-VB ′ of FIG. (A) is a top view which shows the state which installed the parabolic antenna unit with respect to the rail member of Fig.5 (a), (b) shows the coupling | bonding relationship of a 2nd ring, a spacer, a rail member, and a parabolic antenna unit. It is sectional drawing in line VIB-VIB 'of (a) shown. (A) is a front view which shows the structure of a sliding plate, (b) is a front view which shows the structure of a pressing plate. (A) is a partial cross section figure which shows the state which fixed the parabolic antenna unit to the 2nd ring, (b) is a partial cross section figure which shows the state which fixed the movement auxiliary member to the parabolic antenna unit. It is an external view which shows the state which suspends a parabolic antenna unit on the ground.

Hereinafter, an antenna moving device and an antenna moving method according to embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the vertical direction is the vertical direction, and the description of the configuration is performed based on the posture attached to the steel tower 10 unless otherwise specified. In the following description, the case where the antenna is removed will be described as an example. However, the present invention is also applicable to a case where a new antenna or an antenna after replacement is installed on a steel tower.
FIG. 1 (a) is a side view showing a schematic configuration of a steel tower on which a parabolic antenna unit is installed, and FIGS. 1 (b) to (e) are first to fourth rings fixed to the steel tower and parabolas installed on each ring. It is a top view which shows schematic structure of an antenna unit, respectively.
The antenna moving device 100 (see FIG. 6B) includes the parabolic antenna units 31 to 37 installed with respect to the rings 21 to 24 fixed around the tower 10 from the first position P1 along the ring. It is provided to move to the second position P2 (see FIG. 6A). In the example shown in FIG. 1, a plurality of rings (first ring 21, second ring 22, third ring 23, and fourth ring 24) are fixed at predetermined heights around the steel tower 10 installed on the ground E. Furthermore, a plurality of parabolic antenna units 31, 32, 33, 34, 35, 36, and 37 are installed on the outer periphery of the rings. The installation height of the ring, the number of installations, and the installation position (azimuth) of the parabolic antenna unit with respect to the ring are inevitably determined because it is the direction (azimuth) of the opposing radio base station with which the parabolic antenna communicates. .

  As shown in FIG. 6B, the antenna moving device 100 includes a rail member 70 a and a movement assisting member 80. As shown in FIG. 5B, the rail member 70 a includes a rail base portion 71 and an antenna support portion 72. The movement assisting member 80 includes a sliding plate 81 and a pressing plate 82 as shown in FIG.

Hereinafter, taking the parabolic antenna units 32 and 33 (see FIG. 1C) installed in the second ring 22 as an example, the configuration of the ring, the parabolic antenna unit and the antenna moving device, and the parabolic antenna unit are removed from the installation. The steps up to here will be described. These configurations and processes are the same for the parabolic antenna unit installed in the first ring 21, the third ring 23, or the fourth ring 24.
2A is a plan view showing the configuration of the parabolic antenna unit installed in the second ring and the second ring in FIG. 1, and FIG. 2B shows the coupling relationship between the parabolic antenna unit and the fixture. It is sectional drawing in line IIB-IIB 'of (a). 3A is a plan view showing a state in which spacers are arranged with respect to the second ring in FIG. 2A, and FIG. 3B shows a coupling relationship between the second rings and the spacers. It is sectional drawing in line IIIB-IIIB 'of a). 4A and 4B are diagrams showing the configuration of the spacer, where FIG. 4A is a plan view, FIG. 4B is a bottom view, and FIG. 4C is a side view seen from the IVC direction of FIG. FIG. 5A is a plan view showing a state in which the rail member is arranged with respect to the second ring of FIG. 3A, and FIG. 5B shows a coupling relationship between the second ring, the spacer, and the rail member. FIG. 6 is a cross-sectional view taken along line VB-VB ′ in FIG. 6A is a plan view showing a state in which the parabolic antenna unit is installed on the rail member of FIG. 5A, and FIG. 6B is a diagram of the second ring, the spacer, the rail member, and the parabolic antenna unit. It is sectional drawing in line VIB-VIB 'of Fig.6 (a) which shows coupling | bonding relationship. FIG. 7A is a front view showing the configuration of the sliding plate, and FIG. 7B is a front view showing the configuration of the holding plate. 8A is a partial cross-sectional view showing a state where the parabolic antenna unit is fixed to the second ring, and FIG. 8B is a partial cross-sectional view showing a state where the movement assisting member is fixed to the parabolic antenna unit.

(1) Installation of the parabolic antenna unit on the ring As shown in FIG. 2A, the second ring 22 is fixed to the steel tower 10 by a plurality of arm portions 12 respectively extending from the plurality of tower legs 11 of the steel tower 10. Yes. Here, as shown in FIG. 2 (b), the second ring 22 is composed of two ring members 22a and 22b arranged to face each other in the vertical direction (the vertical direction in FIG. 2 (b)). The ring member 22a includes a surface extending in the horizontal direction and a surface extending downward in the vertical direction, and a cross section perpendicular to the horizontal direction has an inverted L shape, while the same cross section of the ring member 22b has an L shape. There is no.
On the outer periphery of the second ring 22, parabolic antenna units 32 and 33 are installed at predetermined installation positions (first positions) P1 and P1 ′, respectively.

Hereinafter, the installation structure of the parabolic antenna unit 32 with respect to the second ring 22 will be described with reference to FIG. The installation structure of the parabolic antenna unit 33 with respect to the second ring 22 is the same.
The parabolic antenna unit 32 includes a reflector 32a that reflects radio waves, and a mount 32b that supports the reflector 32a in a state in which the orientation of the reflector 32a can be changed. The parabolic antenna unit 32 is fixed to the second ring 22 by V-shaped bolts 41 and 42. Specifically, the upper part of the parabolic antenna unit 32 has a V-shaped bolt 41 arranged so as to sandwich the ring member 22a from the side, and the bolt portions 41a and 41b at the tip of the V-shaped bolt 41 are placed on the back side 32c of the gantry 32b. The bolt holes 32d and 32e are respectively inserted and fixed with nuts. In addition, a V-shaped bolt 42 is arranged at the lower part of the parabolic antenna unit 32 so as to sandwich the ring member 22b, and bolt portions 42a and 42b at the tip of the V-shaped bolt 42 are bolt holes 32f provided on the back side 32c of the gantry 32b. , 32g, and fixed with nuts. Here, two V-shaped bolts 41 are provided in the circumferential direction of the ring member 22a (perpendicular to the paper surface of FIG. 2 (b)), and the upper parts (bolt holes 32d, 32d, 32e, 32e). Similarly, two V-shaped bolts 42 are provided in the circumferential direction of the ring member 22b (perpendicular to the paper surface of FIG. 2B), and are respectively provided below the back side 32c (bolt holes 32f, 32f) of the mount 32b. 32g, 32g).

(2) Rail member installation process In this process, the base bar 101a (see FIG. 9) is installed at an arbitrary part of the steel tower 10, and the wire 38 (see FIG. 8B) supported by the base bar 101a is used as the wire. The V-shaped bolts 41 and 42 are removed while supporting the parabolic antenna unit 32 by being engaged with the engaging portion 32h, the parabolic antenna unit 32 is removed from the second ring 22, and the parabolic antenna unit 32 is lifted and the second ring A plurality of spacers 50a, 50b, 50c, 50d, 50e, 50f, 50g, 50h, 50i divided in the circumferential direction are arranged on 22 ring members 22a, and a plurality of rail members 70a, 70b are further provided thereon. , 70c, and 70d are installed in this order. Hereinafter, the spacer 50a and the rail member 70a will be described as an example, but the spacers 50b, 50c, 50d, 50e, 50f, 50g, 50h, 50i and the rail members 70b, 70c, 70d have the same configuration and are similarly installed. To do.

As shown in FIGS. 3 and 4, the spacer 50 a includes a bottom plate portion 51 placed on the ring member 22 a and a support portion 52 extending upward from the bottom plate portion 51. The bottom plate portion 51 and the support portion 52 are preferably formed integrally. As shown in FIG. 3 (b), the spacer 50a includes bolt portions 61 and 62 at the tips of the V-shaped bolts 60 arranged so as to sandwich the ring member 22a from below, bolt holes 51a provided in the bottom plate portion 51, 51b is respectively inserted, fixed with a nut, and fixed to the ring member 22a.
As shown in FIG. 3 (a), the spacer 50a is arranged on a plane on the upper surface of the ring member 22a that avoids projections (projections) such as connecting members between the arm portion 12 and the ring member 22a and bolts. To do. In this installed state, the spacer 50a has a size such that the upper surface 52a of the support portion 52 is higher than the height of the projections present on the upper surface of the ring member 22a. Further, the support portion 52 is formed to be higher than the bolt portions 61 and 62 protruding from the bottom plate portion 51.
The spacers 50a, 50b, 50c, 50d, 50e, 50f, 50g, 50h, and 50i form a plane on which the rail member is placed by the respective upper surfaces 52a.

As shown to Fig.5 (a), the rail member 70a is comprised by the circular arc shape matched with the circular arc of the ring member 22a. The rail member 70a extends in the horizontal direction to form an installation plane disposed on the upper surface 52a of the spacer 50a, and extends vertically upward from the rail base 71, and the movement assisting member 80 (FIG. 6B). And an antenna support portion 72 with which the parabolic antenna unit 32 is engaged. In the rail member 70a, with the rail base portion 71 disposed on the upper surface 52a of the spacer 50a, the bolt holes 71a and 71b provided in the rail base portion 71 and the bolt holes 53a and 53b of the spacer 50a are respectively aligned and bolts 74 and 74 are inserted, fixed by a nut, and fixed to the spacer 50a. The rail member 70a is also fixed to the spacer 50b and the spacer 50c in the same manner as the spacer 50a.
The rail member 70a extends in the circumferential direction of the ring member 22a from the installation position (first position) P1 where the parabolic antenna unit 32 is attached to the ring member 22a to the removal position (second position) P2 where the parabolic antenna unit 32 is removed. Secure on the arc part along. Here, the installation position (first position) P1 and the removal position (second position) P2 are positions of predetermined orientations on the ring member 22a and corresponding positions on the rail member 70a. .
As shown in FIG. 6A, the rail members 70a, 70b, 70c, and 70d (divided rails) are sequentially arranged along the circumferential direction of the ring member 22a, from the first position to the second position. A series of arc shapes along the circumferential direction of the ring member 22a are formed. Thereby, each antenna support part 72 of the rail members 70a, 70b, 70c, and 70d becomes a series of arc-shaped rails, and it is possible to guide the parabolic antenna unit 32 from the first position to the second position as described later. Become. The rail member only needs to carry a split rail for the required length from the installation position (first position) P1 to the removal position (second position) P2, and is configured as a plurality of split rails. By doing so, it is possible to facilitate the transportation and fixing work to a high place called a steel tower.
As shown in FIGS. 5A and 6A, the rail members 70a, 70b, 70c, and 70d (divided rails) may be configured with different lengths, or all have the same length. You may comprise. One rail member may be arranged on one spacer other than being arranged so as to span a plurality of spacers.

(3) Movement auxiliary member attaching step In this step, following the rail member installation step, the movement auxiliary member 80 is attached to the parabolic antenna unit 32 in a state of being lifted from the ring member 22a by the wire 38. The movement assisting member 80 is fixed to the parabolic antenna unit 32 so that the parabolic antenna unit 32 can be engaged with the rail members (70a to 70d).
As shown in FIG. 7A, the sliding plate 81 is a plate-like member and has a lower end surface 81 a that contacts the upper end surface of the antenna support portion 72. The lower end surface 81 a has a curved surface shape that reduces the contact area with the antenna support portion 72. As this curved surface shape, for example, a hemispherical shape that makes contact with the antenna support portion 72 with a point or a small surface, or an arc shape that makes contact with the antenna support portion 72 with a line can be adopted.
As shown in FIG. 7B, the pressing plate 82 is a substantially rectangular planar plate-like member, and the vertical length thereof is longer than that of the sliding plate 81.

  As shown in FIG. 8B, the sliding plate 81 and the pressing plate 82 are arranged in the order of the sliding plate 81 and the pressing plate 82 with respect to the upper part of the back side 32c of the gantry 32b (the back side of the parabolic antenna unit 32). In this state, the bolt holes 32d and 32d provided on the back side 32c of the gantry 32b, the bolt holes 81b and 81c of the sliding plate 81, and the bolt holes 82b and 82c of the holding plate 82 are respectively aligned to the bolts. 92 and 92 are inserted, it is fixed with a nut, and it fixes with respect to the mount frame 32b. As described above, the bolt hole 32d is a bolt hole for inserting the V-shaped bolt 41 for installing the parabolic antenna unit 32 on the ring member 22a (see FIG. 2B). As described above, by using the bolt holes 32d and 32d, it is not necessary to provide a new bolt hole, and the attachment work of the movement assisting member 80 can be facilitated. Here, two sets of the sliding plate 81 and the pressing plate 82 are provided in a direction perpendicular to the paper surface of FIGS. 6B and 8B (a first movement auxiliary member and a second movement auxiliary member), Each is fixed to the upper part (bolt holes 32d, 32d) of the back side 32c of the gantry 32b.

Below the lower end surface 81a of the sliding plate 81, a space 93 sandwiched between the gantry 32b and the lower portion 82a of the pressing plate 82 is formed due to the difference in the area of the side surfaces of the sliding plate 81 and the pressing plate 82. (See FIG. 8 (b)). When the antenna support portion 72 of the rail member 70a is inserted into the space 93, the parabolic antenna unit 32 is brought into contact with the upper end surface of the antenna support portion 72 of the rail member 70a and the lower end surface 81a of the sliding plate 81. The rail member 70a is engaged. When the parabolic antenna unit 32 is manually pushed by an operator, the lower end surface 81a of the sliding plate 81 slides on the upper end surface of the antenna support portion 72, and is removed from the installation position (first position) P1 (first position). 2 position) Guided by rail members 70a, 70b, 70c and 70d (divided rails) up to P2, it becomes possible to move along the ring member 22a.
Here, the shapes such as the thickness and height of the sliding plate 81 and the holding plate 82 can be arbitrarily designed as long as the parabolic antenna unit 32 can be moved reliably and smoothly.

(4) Antenna moving step As described above, the parabolic antenna unit 32 is moved by the worker in the direction of the arrow in FIG. 6A while the movement auxiliary member 80 attached in the movement auxiliary member attaching step is locked to the rail member 70a. When pushed manually, the parabolic antenna unit 32 is sequentially guided by the rail members 70a, 70b, 70c, and 70d, and moves from the installation position P1 to the removal position P2. Here, since the shape of the lower end surface 81a of the sliding plate 81 is formed so as to reduce the contact area with the antenna support portion 72, the frictional resistance during sliding is reduced, whereby the parabolic antenna unit 32 is reduced. It is possible and easy to move by human power. Further, when the antenna unit 32 is moved between the upper end surface of the antenna support portion 72 and the lower end surface 81a of the sliding plate 81 while applying a substance that reduces frictional resistance such as lubricating oil, the moving operation is further performed. Becomes easier. When moving, the parabolic antenna unit 32 (especially the gantry 32c) and the second ring 22 are provided with a wire or the like for preventing the fall, and the wire or the like is replaced to change the relationship between the movement assisting member 80 and the rail member 70a. It is preferable to assist.

(5) Antenna Hanging Step FIG. 9 is a perspective view showing a state in which the parabolic antenna unit 32 is suspended on the ground. In the antenna hanging process, the parabolic antenna unit 32 that has moved to the removal position (second position) P2 in the antenna moving process is lifted by the pedestal 101b provided in the steel tower 10, and the engagement between the movement assisting member 80 and the rail member 70a is performed. Is released, the parabolic antenna unit 32 is moved to the main wire (winch wire) 102 passed through the gold wheel 105 attached to the ring member 22b or the like of the second ring 22 and the parabolic antenna unit 32 is driven while the main wire 102 is driven. Hanging down to the ground via The main wire 102 supports the approximate center of the parabolic antenna unit 32. In addition to the main wire 102, the left and right ends of the parabolic antenna unit 32 are supported by guide wires 103 and 104. By using the guide wires 103 and 104, it is possible to prevent the parabolic antenna unit 32 from rotating and vibrating while being suspended by the main wire 102 and coming into contact with the tower 10 or other parabolic antenna units.

A modification will be described below.
In the above-described embodiment, the spacer 50a is arranged on a plane without protrusions such as bolts on the upper surface of the ring member 22a. However, the present invention is not particularly limited to this. The bottom surface shape of the spacer 50a may be formed so as to correspond to the shape of the protrusion, and may be provided so as to be fixed to a portion where the protrusion on the upper surface of the ring member 22a is present. Also in this case, a plane on which the rail member is placed is formed by the upper surface of the spacer.

  In the above description, the installation position of the parabolic antenna unit is the first position and the removal position is the second position. However, the first position and the second position may be set to other settings. The present invention is also useful, for example, when it is desired to change the installation direction of the parabolic antenna unit on the same ring, and since the parabolic antenna unit can be easily moved along the ring, the installation direction can be easily and accurately changed. be able to.

  In the above-described embodiment, the movement auxiliary member is attached after the spacer and the rail member are installed. However, the movement auxiliary member may be attached first or in parallel.

The sliding plate 81 and the holding plate 82 may be integrally formed. Also, the relationship between the sliding plate 81 and the antenna support portion 72 is the above example as long as the resistance during movement of the parabolic antenna unit can be reduced. It is not limited. For example, if a large number of metal balls are arranged between the upper end surface of the antenna support portion 72 and the lower end surface 81a of the sliding plate 81, the parabolic antenna unit can be moved smoothly by the rotation of the balls.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the scope of the purpose of the improvement or the idea of the present invention.

  As described above, the antenna moving device and the antenna moving method according to the present invention are useful for attaching and detaching a parabolic antenna unit having a limited moving path.

10 Steel tower 21 1st ring 22 2nd ring 22a, 22b Ring member 23 3rd ring 24 4th ring 31, 32, 33, 34, 35, 36, 37 Parabolic antenna unit 32c Back side 32d, 32e, 32f, 32g Bolt hole 41, 42, 60 V-shaped bolts 50a, 50b, 50c, 50d, 50e, 50f, 50g, 50h, 50i Spacer 52a Upper surface 70a, 70b, 70c, 70d Rail member 71 Rail base 72 Antenna support portion 80 Movement assisting member 81 Slide Moving plate 82 Holding plate 93 Space 100 Antenna moving device

Claims (9)

An antenna moving device for moving a parabolic antenna unit installed at a first position of a ring fixed around a steel tower from the first position to the second position of the ring along the ring,
A rail member fixed along the ring from at least the first position to the second position and guiding the parabolic antenna unit from the first position to the second position;
An antenna moving apparatus comprising: a movement assisting member fixed to the parabolic antenna unit and capable of engaging the parabolic antenna unit with the rail member.   The antenna according to claim 1, wherein the rail member includes an installation plane extending in a horizontal direction, and the installation plane is arranged on a plane formed by one or more spacers arranged on the ring. Mobile equipment.   The said spacer is provided in at least two positions avoiding the protrusion part of the upper part of the said ring, The said plane which the said spacer forms is higher than the height of the said protrusion part. Antenna moving device.   The rail member includes an antenna support portion that extends upward in the vertical direction, and the parabolic antenna unit is movable along the rail member while being engaged with the antenna support portion by the movement assisting member. The antenna moving device according to any one of claims 1 to 3.   The movement assisting member includes a sliding plate having one side surface fixed to the upper part on the back side of the parabolic antenna unit and the other side surface provided with a pressing plate. The parabola antenna unit is movable along the rail member while being engaged with the antenna support portion by contacting the lower surface of the sliding plate with the upper surface of the antenna support portion. The antenna moving device according to claim 4.   The rail member includes a plurality of divided rails, and the plurality of divided rails form a series of arc shapes along the ring from the first position to the second position. The antenna moving device according to any one of claims 1 to 5.   The said movement assistance member is fixed to the said parabolic antenna unit using the bolt hole provided in order to install the said parabolic antenna unit in the said ring, The any one of the Claims 1 thru | or 6 characterized by the above-mentioned. The antenna moving device according to claim 1.   The lower surface of the sliding plate is provided with a curved surface shape so as to reduce a contact area with the antenna support portion, claim 6 dependent on claim 5, claim 6 dependent on claim 5, and dependent on claim 5. The antenna moving device according to claim 1. A method of moving a parabolic antenna unit installed at a first position of a ring fixed around a steel tower from the first position to the second position of the ring along the ring,
In a state where the parabolic antenna unit is removed from the ring and lifted, a rail member installation step of installing an arc-shaped rail member along the ring; and
A movement auxiliary member attaching step for attaching a movement auxiliary member to the parabolic antenna unit in a state of being lifted from the ring,
An antenna moving step of moving the parabolic antenna unit from the first position to the second position by sliding the parabolic antenna unit to which the movement assisting member is attached while being engaged with the rail member;
An antenna moving method comprising:

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