JP6692125B2 - Rotating device - Google Patents

Description

The present invention relates to a rotating device.

A rotating device that rotates a unidirectional device such as a Yagi antenna for the short wave band is known.

When installing one Yagi antenna on the top of the tower so that it can rotate horizontally and another Yagi antenna that can also rotate horizontally at different heights on the same tower, the antennas installed close to each other should be They may interfere with each other and the original performance may not be exhibited.

The above interference may be mitigated if a long mast is projected upward from the top of the tower and the antennas can be installed sufficiently apart from each other, but a long and strong mast is required, and if the support structure and rotation mechanism become large. There are challenges. You can rotate the tower itself, but the equipment will be a huge undertaking.

A rotating device installed at an intermediate height position of a tower is known. For example, in Patent Document 1, as shown in FIG. 22, an annular plate that encloses the tower is rotated around the tower.

Japanese Patent Publication No. 58-500923

However, in the above-mentioned conventional apparatus, since the annular plate always surrounds the tower and occupies the outer side of the tower, the passage of construction workers is obstructed, the ladder cannot be continuously installed, and the convenience of raising and lowering is not good. Grease and the like that adhere to the plate may stain work clothes. In addition, the rotation may not be smooth due to vertical mounting during assembly or deformation distortion after installation.

It is an object of the present invention to provide a rotating device that can be installed at an intermediate position in the longitudinal direction of a support, can smoothly rotate in a wide angle range, and can improve the convenience of people passing.

That is, the rotating device according to the invention of the present application ,
Installed at one side of the pillar-like support, on one side of the one side, in a direction crossing the longitudinal direction of the support, and one position, position and another position different of the one And a rotation center that is movably provided between
One end is connected to the center of rotation, the other end is an arm connected to a device having directivity,
Equipped with
Rotation and movement of the center of rotation from the one position to the other position causes the directional device to face the other side of the support opposite the one side. The other end of the arm extending from one side of the one side of the support reaches the other side of the support .
It is characterized by

According to the present invention, a device having directivity can be smoothly rotated in a wide angle range. Further, since it is possible to eliminate a member that constantly crosses the side portion of the support body, it is possible to install a continuous ladder, and the convenience of raising and lowering people can be improved.

The movement locus of the rotation center may be a straight line, a curved line including a circular arc, or a combination thereof. The support here can be selected from, but not limited to, usually vertical steel self-supporting or branch towers, crank-up towers, steel pipe columns (iron pipes, panzamast, etc.), concrete columns, wooden columns, chimneys, etc. .. Further, it may be horizontal as in the example of the horizontal stack boom of the stack Yagi antenna.

The directional device of the present invention is exemplified by various unidirectional antennas such as Yagi type, as well as devices used for one direction such as a video camera, a sound collecting microphone, a searchlight, and a wind turbine generator. However, the device is not limited to these, and any device that can be preferably used in a certain direction may be used, such as a signboard for advertising that displays different messages on the front and back, or one that has directional characteristics in both the front and back directions. Good.

It is a side view which shows an example of the tower which installed the rotating device of Example 1 of this invention. FIG. 2 is an operation explanatory view of the rotating device of FIG. 1, FIG. 2a shows a state in which the Yagi antenna is oriented in one direction, and FIG. 2b shows a state in which the Yagi antenna is oriented in the opposite direction. It is a top view showing Example 2 of this invention. It is the perspective view which showed Example 3 of this invention. It is the figure which showed the rotating device of Example 4 of this invention, FIG. 5a is a top view, FIG. 5b is a side view. It is operation | movement explanatory drawing of the rotating device of the 1st reference technology of this invention. It is operation | movement explanatory drawing of the rotating device of the 2nd reference technology of this invention. It is operation | movement explanatory drawing of the rotating device of the 3rd reference technology of this invention.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The tower 1 shown in FIG. 1 is an example of a support, and a position at an intermediate height position is shown and its upper and lower parts are omitted. Since a so-called triangular tower adopting a square lattice structure or the like is well known, it is shown by a one-dot chain line and detailed description thereof is omitted.

In the tower 1, two guides 10 and 11 are attached to one side surface of the tower 1 so as to be parallel to each other at predetermined intervals in the horizontal direction which is a direction intersecting the height direction. ing. A shaft having a spiral portion (not shown) is incorporated in each of the guides 10, 11 and is rotated by a motor (not shown) incorporated in each of the power boxes 10a, 11a to form a so-called linear guide. The two blocks 12a and 12b move horizontally at the same speed in the same direction, that is, in the direction of arrow L or R. A bearing 13 is attached to the upper block 12a, and a motor 14 as a rotation center is attached to the lower block 12b, and supports the mast 15 so as to be rotatable by one round (360 degrees). An arm 16 as an arm portion extends in one horizontal direction at an intermediate height position of the mast 15, and an antenna 17 (four-element Yagi) as a directional device is attached to the tip end portion thereof.

The motor 14 is also called a rotator, and when the output shaft is not energized, the brake does not rotate, and when the built-in prime mover is energized, a large shaft torque is generated by the reduction gear to rotate at a low speed, which is 360 degrees. You can stop at any angle in the range. The time required for one rotation is about 90 seconds, a variable resistor that moves in conjunction with the rotation is provided inside, and the angular position is read at a remote place by a meter (not shown). One rotation of the output shaft of the motor 14 and movement of the guides 10 and 11 of the block 12 from one end of the movable range to the other end, that is, one-way operation, coincide with each other.

The operation of the rotating device of this embodiment will be described with reference to FIG. For the sake of explanation, the guide 10 and the bearing 13 are omitted. FIG. 2a is when the motor 14 is at the position (one position) corresponding to FIG. 1, and the antenna 17 faces the 3 o'clock direction in the figure. The block 12b is located substantially at the center of the movable range of the guide 11.

When the block 12b is at the right end of the figure (an example of one position relative to another position) as in FIG. 2b, the output shaft of the motor 14 is rotated 180 degrees from the position in FIG. 2a. The tip of the arm 16 is on the side opposite to the tower 1, and the antenna 17 faces the direction of 9 o'clock in the figure. In this way, the antenna 17 rotates counterclockwise by a half turn.

The case where the antenna 17 is located at an intermediate position in the antenna direction of the solid line in FIGS. 2a and 2b is shown by a broken line in FIG. 2b. The antenna rotates from the right to the top of the figure and from the top to the left without hitting the tower 1. By moving from the state of FIG. 2a in the opposite direction to the movement of FIG. 2b, it is rotated 180 degrees in the opposite direction. As described above, the antenna 17 can be oriented in any direction in all directions.

According to the present embodiment, the device is configured as a whole as a whole, and since the rotating device does not have a portion which is always occupied or traversed over the entire circumference of the side portion of the tower 1, a person does not always occupy the side surface which is not always occupied by the rotating device. It is easy to pass and ladders can be installed continuously on the side. Further, since there is no drive mechanism portion on one side surface of the tower 1, it is not contaminated with grease or the like.

Next, a second embodiment will be described. The tower 1 is a pan-zamast having a substantially circular cross section. In the following description of the embodiments, substantially the same parts as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

In the rotating device shown in FIG. 3, the pinion gear 27 is attached to the output shaft of the motor 14, and is mounted on the block 22 which is smooth and freely movable. Further, the rack gear 28 and the pinion gear 27 mesh with each other, and the output shaft of the motor 14 rotates to rotate the antenna 17, and at the same time, the motor 14 self-propels on the guide 21 together with the block 22. Move in the direction. This eliminates the need for another power source for horizontal movement and simplifies the configuration.

FIG. 4 shows Example 3. A fixed base 33 is installed on the side of the tower 1, and on this fixed base 33, a pair of rectangular tube-shaped rails 34 arranged in parallel at predetermined intervals are provided. A pair of upper and lower L-shaped four sets of guides 36 that slidably hold the rail 34 sandwiches the rail 34 in a U-shape from above and below, and the movable base 35 to which the motor 14 is attached has a length of the rail 34. It is mounted so that it can move smoothly in any direction.

A drum 37 and an arm 16 are attached to the output shaft 14a of the motor 14. Both ends of a wire rope 39, which is wound around the drum 37 in a spiral shape several times, are fixed to posts 38, 38 on the respective end sides of the rail 34. A position adjusting mechanism (not shown) moves the posts 38, 38 in directions away from each other to apply tension to the wire rope 39, and the movable base 35 stops on the rail 34 together with the motor 14 in a stopped state.

When the output shaft 14a is rotated in one direction, the drum 37 winds one side of the wire rope 39 and unwinds the other side, and the motor 14 moves by itself to move to one side. The output shaft 14a, which is the center of rotation, is rotated by one motor 14 and moved along the rail 34.

FIG. 5 shows Embodiment 4 of the present invention. Pulleys 41 and 42 are fixed to the output shaft of the motor 14 so as to be stacked.

The rotation of the pulley 41 is transmitted to the pulley 43 by the belt 51, and the rotation of the pulley 42 is transmitted to the pulley 44 by the belt 52. The pulleys 43 and 44 rotate separately about the common axis X. Only pulley 44 has twice the diameter of the other pulleys. The two pulleys 43 and 45 rotate integrally.

A rod 54 that rotates according to the rotation of the pulley 44 about the axis X is attached to a base 49 that supports the axis X, and a pulley 46 attached to the tip of the rod 54 rotates about an axis Y that is the center of rotation, and a pulley The rotation of 45 is transmitted to the pulley 46 by the belt 53.

One end of the arm 16 is attached to the pulley 46, the antenna 17 is attached to the other end, and the arm 16 is rotated by the rotation of the motor 14. At this time, the rod 54 turns at an angle half the rotation angle of the pulley 42. That is, when the motor 14 rotates 180 degrees in one direction, the pulley 44 and the rod 54 rotate 90 degrees, all other than 180 degrees, and the antenna 17 also rotates 180 degrees.

When the motor 14 rotates 180 degrees in the opposite direction, the pulley 44 and the rod 54 rotate 90 degrees, all other than 180 degrees, and the antenna 17 also rotates 180 degrees in the opposite direction. That is, the antenna 17 can be oriented in any direction in all directions while avoiding to go around the tower 1. The combination of the sprocket and the chain may be replaced with the combination of the pulley and the belt.

In the fourth embodiment, since all the movable parts have the axial rotation structure, there is no guide as in the other embodiments, the derailment does not occur structurally, and catching is less likely to occur. By using suitable bearings, a sturdy, lightly rotatable structure can be constructed relatively easily.

In each of the above embodiments, an example of rotating 360 degrees has been described, but the horizontal movement distance is changed as necessary to select less than 360 degrees or more than 360 degrees, for example, 405 degrees (one rotation and 45 degrees). it can.

Next, a first reference technique of the present invention will be described with reference to FIG. The boom of the antenna 17 indicated by an arrow for the purpose of description through the following example is directly attached to the output shaft 14a of the motor 14 which is the center of rotation, and therefore there is no member such as the arm 16 described above. The motor 14 is linearly moved between the position A1 indicated by the alternate long and short dash line and the other position A2 on the guide rail GR indicated by the alternate long and short dash line. At positions A1 and A2, the antenna 17 points in the 9 o'clock and 3 o'clock directions of the clock, respectively.

When the rotation center does not move from the position A0, which is shown by a broken line for comparison, it can rotate in the direction of 2 o'clock from 10 o'clock to 12 o'clock, that is, only at the rotation angle θ0. Therefore, the position range of A1 to A2 When moving between the two, the angle at which the Yagi antenna 17 is directed increases by 2 o'clock. Further, by moving in the range of A3 to A4, the antenna 17 can be rotated at a wider angle because the position of A3 is 8 o'clock and the position of A4 is 4 o'clock.

FIG. 7 is a plan view explaining the operation of the second reference technology of the present invention. Similar to the first reference technique, the boom of the antenna 17 is directly attached to the output shaft 14a, and the base (not shown) changes the moving direction at the intersection B0 of the guide rails GR1 and GR2, and the plane shown by the alternate long and short dash line The guide rail GR having a substantially V-shape is parallel to one surface TL of the three surfaces (TL, TM, TN) of the side surface of the tower 1 and the rotation center is moved from position B0 to positions B1, B3, B5, and the other surface TM. The rotation center moves horizontally from position B0 to positions B2, B4, and B6 in parallel with.

In this way, the center of rotation moves while maintaining the proximity of the tower 1, so that the antenna 17 can be rotated at a wide angle. That is, the antenna 17 becomes 6 o'clock, 9 o'clock, 11 o'clock, 12 o'clock, 2 o'clock, and 4 o'clock at positions B5, B3, B1, B0, B2, and B4, respectively, and indicates 6 o'clock again at position B6 ( 1 revolution).

FIG. 8 is a plan view for explaining the operation of the third reference technology of the present invention. A major feature of the comparison with the second reference technology is that the monorail guide rail GR indicated by the alternate long and short dash line has a substantially semi-circular shape in plan view drawn with a constant radius R0 from the center C0 which is the virtual center. The point at which the motor 14 is installed on a base (not shown) assembled so as to straddle it, and the output shaft 14a, which is the center of rotation, moves smoothly around the tower 1 in a circular arc along the guide rail GR. It is in.

The antenna 17 indicates the clocks 6 o'clock, 8 o'clock, 10 o'clock, 12 o'clock, 2 o'clock, and 4 o'clock at the positions C1, C2, C3, C4, C5, and C6, respectively, and indicates the 6 o'clock again at the position C7 ( It makes one rotation). The direction of the antenna 17 can be read at a remote place by the sum of the angle of rotation of the base and the angle of rotation of the output shaft 14a.

When the power source of the rotation center is prepared for each of the movement and the rotation, a plurality of power sources may be interlocked as in the first embodiment, or rotation of a predetermined angle and a predetermined amount of power may be performed. The movement may be individual. Alternatively, a control circuit including a timer and a relay may be incorporated to automatically switch between rotation, movement, rotation again, or the like, or individual operations may be sequentially performed manually (manual operation). The power source is not limited to electric power, and a chain block, a manual winding winch, or the like can be used.

Further, if the antenna 17 rotated by the motor 14 and another antenna such as the top of the tower 1 are a set of a plurality of beam antennas having the same specifications and arranged at a predetermined interval, they are always in the same direction. By rotating at the same speed and operating in parallel at all times, high front gain and sharp horizontal and vertical directional characteristics can be obtained without interruption in all directions.

It can be used as a unidirectional antenna device installed on the side surface of a support or as a rotating device that changes the direction of a surveillance camera or the like.

1 Supports 14, 14a, Y Rotation Center 16 Arms 17 Directional Device

Claims (1)

It is installed on one side of the columnar support, and on one side of the one side, one position in a direction intersecting the longitudinal direction of the support and another position different from the one position. , A rotation center provided so as to be movable between
One end is connected to the center of rotation, the other end is an arm connected to a device having directivity,
Equipped with
Rotation and movement of the center of rotation from the one position to the other position causes the directional device to face the other side of the support opposite the one side. The rotating device , wherein the other end of the arm portion that moves from one side of the one side portion of the support body to the other side portion of the support body moves.

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