JPS62257Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a novel drive device for a plurality of parabolic antennas.

[Prior Art] Parabolic antennas are generally used to observe radio waves radiated by the sun. This parabolic antenna tilts toward the pole or declination by rotating its polar axis and declination axis, and usually multiple parabolic antennas are arranged and driven in synchronization to track and observe the sun. . FIG. 1 shows an example of a conventional general rotation system for both shafts of this type. As shown in the diagram, each parabolic antenna a
The worm e has a polar axis b for tilting it in the polar direction, a worm wheel c fixed to the worm wheel c, and a worm e of a single polar axis drive shaft d provided at right angles to the polar axis b. is engaged with.
Therefore, as the polar axis drive shaft d rotates, the plurality of polar axes b engaged therewith simultaneously rotate, and each parabolic antenna a synchronizes and tilts and moves in the pole direction. On the other hand, the declination axis f is attached to each parabolic antenna a, and has a mechanism for rotating it independently by manual or motor drive. Therefore, each parabolic antenna is tilted and moved in the declination direction by an independent drive mechanism.

In FIG. 1, g is a parabolic antenna support arm, h is a yoke, and i is a bearing.

[Problems that the invention aims to solve] However, with such individual driving of the declination axis, it is difficult to synchronize the rotation of multiple parabolic antennas, and this makes it impossible to accurately measure solar radio waves. There was a problem.

In order to improve this problem, a method has been developed to electrically synchronize the electric motors for driving the declination axis, but the complexity of the control makes the device expensive.

Further, a parabolic antenna driving device in which the polar axis driving type and the declination axis driving type are reversed has similar drawbacks.

The present invention was devised to solve the drawbacks of the conventional devices as described above.

The purpose of the present invention is to enable a plurality of declination axes for moving a parabolic antenna along the declination direction to be engaged with one drive shaft, and by rotating this drive shaft, The present invention provides a parabolic antenna driving device that synchronizes a plurality of parabolic antennas to tilt and move them in the declination direction.

[Means and effects for solving the problems] In order to achieve the above object, the parabolic antenna driving device according to the present invention is provided with a polar axis and a declination axis provided at right angles to the polar axis. In a device that synchronizes and drives multiple parabolic antennas that are rotated by rotating these polar and declination axes, each parabolic antenna engages with the declination axis and coaxially moves along the polar axis. A rotatable rotational force transmission shaft is provided, and a polar axis drive shaft and a declination axis are engaged with the polar axis and rotational force transmission axis of each parabolic antenna to rotate these polar axes and rotational force transmission axes. The polar axis rotation drive means and the declination axis rotation drive means are provided to rotate the polar axis drive shaft and the declination axis drive shaft, respectively.

In other words, the polar axes of each parabolic antenna rotate simultaneously by rotating the polar axis drive shaft, while the declination axes rotate at the same time by rotating the declination axis drive shaft. Rotate simultaneously through.

Therefore, the rotation of a plurality of parabolic antennas can be synchronized simply by rotating the two drive shafts, one for the polar axis and one for the declination axis.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 6, a declination axis drive shaft 2 and a polar axis drive shaft 4 are arranged in parallel, and a plurality of parabolic antennas 5 are mounted on these drive shafts 2 and 4 at appropriate intervals. 6.

Furthermore, rotation drive devices 25 and 26 are connected to the declination axis drive shaft 2 and the polar axis drive shaft 4, respectively.

As shown in FIGS. 2 to 5, the polar axis 3 is engaged with the polar axis drive shaft 4 via a worm wheel 7 at the installation position of each parabolic antenna 5. A worm gear 8 is carved into the polar drive shaft 4, and the worm wheel 7 is rotatably engaged with the worm gear 8. A polar shaft 3 is integrally connected to the worm wheel 7, and the tip end 3a of the polar shaft 3 is provided with a yoke 9 extending upwardly as shown in FIG. Further, the polar shaft 3 is rotatably supported by a bearing portion 10 of the gear box 6. Further, a hole 11 is provided in the axial center portion 3b of the polar shaft 3, and the hole 11 passes through the worm wheel 7 and the yoke 9.

The yoke 9 is provided with a declination axis 1 perpendicular to the polar axis 3. Both ends 1a of this declination shaft 1 are rotatably attached to a yoke 9 via bearings 12. Further, the declination axis 1 is provided with a tilting box 13 that tilts in parallel to the polar axis 3 by rotation of this axis. A parabolic antenna 5 is mounted on the tilting box 13 via a support arm 14. Further, a counterweight 15 is attached to the tilting box 13 on the side opposite to the parabolic antenna 5.

Furthermore, as shown in FIGS. 2 and 4, a transmission shaft 16 for transmitting rotation to the declination shaft 1 is rotatably inserted into the through hole 11 of the polar shaft 3. Therefore, this transmission shaft 16 is supported coaxially with respect to the polar axis 3. One end 1 of this transmission shaft 16
A worm wheel 17 is attached to 6a,
As shown in FIG. 3, it is engaged with the declination axis drive shaft 2. This declination axis drive shaft 2 has a worm gear 18.
is engraved, and the worm wheel 17 is engaged with this. Further, the transmission shaft 16 is rotatably supported by the gear box 6 via a bearing 19.

The other end 16b of the transmission shaft 16 is connected to the tilting box 13.
The main drive bevel gear 20 is attached to the main drive bevel gear 20 . This driving bevel gear 20 is meshed with a driven bevel gear 21 attached to the declination axis 1. Therefore, when the transmission shaft 16 is rotationally driven, the declination axis 1 is rotated from the main drive bevel gear 20 via the driven bevel gear 21, and the tilting box 13 is moved along the declination axis 1. . A hole 22 is formed in the tilting box 13, through which the transmission shaft 16 is inserted. is allowed.

The gear box 6 is supported on a mounting base 23, and the declination axis drive shaft 2 and the polar axis drive shaft 4 which pass through the gear box 6 are each rotatably supported via bearings 24 as shown in FIG.

Furthermore, as shown in FIG. 5, rotational drive devices 25,
26 are provided. Specifically, a sprocket 27 is attached to the declination axis drive shaft 2, and a drive motor _M1 is connected to this sprocket 27 via a drive chain 28. Similarly, a sprocket 29 is attached to the polar drive shaft 4, and a drive motor _M2 is connected to this sprocket 29 via a drive chain 30. Although not shown, it is of course possible to connect an electric motor or a hydraulic motor for direct drive to each of the drive shafts 2 and 4.

Next, the operation of the present invention will be described.

For example, when observing radio waves from the sun, the parabolic antenna 5 is oriented at an appropriate angle toward the sun, which is the object to be observed. By the way, the direction of the parabolic antenna changes as the earth rotates. Therefore, during observation, a deviation signal indicating the deviation in the direction of the parabolic antenna 5 with respect to the sun is continuously transmitted from a device (not shown) to the driving devices 25 and 26, and the driving devices 25 and 26 that receive this signal are used for the declination axis. The drive shaft 2 and the polar axis drive shaft 4 are driven to rotate.

The rotation of the drive shaft 4 is transmitted to the polar shaft 3 via a worm gear 8 and a worm wheel 7. By rotating this polar axis 3, the yoke 9 is also rotated,
The parabolic antenna 5 including the declination axis 1 is tilted toward the pole and faces the sun in an appropriate direction. In this way, when the declination axis 1 is not rotated, the parabolic antenna 5 is moved to an appropriate angle along the polar direction by rotating only the polar axis 3 while maintaining its declination. .

On the other hand, regardless of whether or not the polar drive shaft 4 rotates,
When the declination axis drive shaft 2 is rotationally driven, the rotation is transmitted to the transmission shaft 16 via the worm gear 18 and the worm wheel 17. The transmission shaft 16 to which the rotational force is transmitted in this manner rotates the declination axis 1 via the driving bevel gear 20 and the driven bevel gear 21. By rotating the declination axis 1, the tilting box 13 is tilted up and down in the vertical direction, and the direction of the parabolic antenna 5 can be changed along the declination direction.

Thus, the parabolic antenna 5 is connected to the drive device 2.
It turns within a certain solid angle determined by the deviation signal given to 5 and 26. If the drive devices 25 and 26 are driven simultaneously, the polar axis 3 and the declination axis 1 can be rotated, respectively, and the parabolic antenna 5 can be made to face the pole and declination directions at appropriate angles.

As described above, when the drive shaft 2 is driven to rotate the worm wheel 17 and the transmission shaft 16 is rotated, the declination axis 1 is rotated via the master and slave bevel gears 20 and 21, and the parabolic antenna provided in the tilting box 13 is rotated. 5 will be turned around.

However, if the other drive shaft 4 is rotationally driven without driving the drive shaft 2, the polar shaft 3 will rotate via the worm wheel 7, and the yoke 9 will rotate. In this way, when the yoke 9 rotates, the declination axis 1 rotates about the axis of the transmission shaft 16.

Therefore, the tilting box 1 provided on the declination axis 1
3 rotates, turning the parabolic antenna 5 around the axis of the transmission shaft 16. However, at the same time, the driven bevel gear 21 meshes with the driving bevel gear 20 and rotates, the declination axis 1 rotates around its axis, the tilting box 13 rotates, and the parabolic antenna 5 moves to the polar axis. At the same time, it rotates around the axis of declination axis 1.

Therefore, when rotating the polar axis 3 in consideration of each rotation mentioned above, the same direction as the rotation direction of the driven bevel gear 21 caused by rotating the yoke 9,
Alternatively, the transmission shaft 16 is moved by the drive shaft 2 so as to appropriately rotate the main drive bevel gear 20 in the opposite direction, thereby correcting the turning angle and turning speed of the parabolic antenna 5 as a whole. The turning angle and turning speed can be appropriately determined.

Furthermore, as shown in FIG. 6, since a large number of parabolic antennas 5 are provided at appropriate intervals along the parallel drive shafts 2 and 4, these single drive shafts 2 and 4 Therefore, each parabolic antenna 5 can be adapted to its pole and declination so as to face the object to be measured while being turned. According to the drive device of the present invention, each parabolic antenna is simultaneously rotated by the same proportion relative to the object to be observed, so that each parabolic antenna can accurately track the sun as the object to be observed. Therefore, measurement accuracy is improved.

In the above embodiment, the case was explained in which the coaxial structure consisting of the polar axis rotatably fitted to the transmission shaft rotates the yoke and also rotates the declination axis rotatably supported by the yoke. A rotation transmission mechanism similar to this may be constructed with a coaxial structure consisting of a transmission shaft rotatably fitted to a polar axis.

[Effects of the Invention] In summary, the present invention provides the following excellent effects.

(1) The declination axis can be rotated by a single drive axis, and the declination direction can be adjusted by synchronizing multiple parabolic antennas. Therefore, it is possible to improve the measurement accuracy regarding the object to be observed using such a plurality of parabolic antennas.

(2) Since it has a single drive shaft configuration, its control circuit can also be simplified. Furthermore, if the rotary yoke is provided with a drive device for rotating the declination axis, the driving force provided by the polar axis is no longer necessary.

[Brief explanation of the drawing]

Fig. 1 is a schematic view of the main parts of a conventional device, Fig. 2 is a sectional side view showing a preferred embodiment of the present invention, Fig. 3 is a sectional view taken along the - line in Fig. FIG. 5 is a partially omitted perspective view of the embodiment, and FIG. 6 is a perspective view of the embodiment in which a plurality of parabolic antennas are arranged. In the figure, 1 is a declination axis, 2 is a declination axis drive shaft, 3 is a polar axis, 4 is a polar axis drive shaft, 5 is a parabolic antenna, 16 is a transmission shaft, and 25 and 26 are drive devices.

Claims (1)

[Scope of utility model registration request] In a device for synchronizing and driving a plurality of parabolic antennas each having a polar axis and a declination axis provided at right angles to the polar axis and rotated by rotating these polar axes and declination axes, Each parabolic antenna is provided with a rotational force transmission shaft that engages with the declination axis and is coaxially rotatable along the polar axis, and engages with the polar axis and rotational force transmission axis of each parabolic antenna, respectively. A polar axis in which a polar axis drive shaft and a declination axis drive shaft are provided in parallel to rotate the polar axis and the rotational force transmission axis, and the polar axis drive shaft and the declination axis drive shaft are rotated, respectively. What is claimed is: 1. A parabolic antenna driving device, comprising: a rotary drive means for a parabolic antenna and a rotary drive means for a declination axis.