JP3311028B2 - Surface shape adjustment system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface shape adjusting system suitable for maintaining a surface shape such as an antenna surface for transmitting and receiving radio waves of a parabolic antenna and an optical reflecting mirror surface in a predetermined shape.

[0002]

2. Description of the Related Art As is well known, in the field of communications, the capacity of communication lines increases as the amount of information exchanged increases, the frequency of radio waves used in wireless communication increases, and the frequency increases to several GHz or more. Is also very short. Also, the surface accuracy of the antenna surface of the parabolic antenna used for transmitting and receiving radio waves needs to be several mm or less.

[0003] For this reason, in the case of a large-sized solid surface antenna, a configuration is adopted in which a person enters the back side of the antenna surface and appropriately adjusts adjustment screws and the like of adjustment mechanisms provided at each of a large number of adjustment points. Have been. However, for example, when the surface accuracy of the antenna surface is set to 1 mm or less even with an antenna having an outer diameter of about 5 m, the total number of adjustment points is 1000.
In addition to the above, the size becomes large, the number of adjustment mechanisms increases, the weight increases, and the time and labor required for the adjustment become enormous.

[0004] Further, in an antenna in which the antenna surface is meshed in order to reduce the weight, the length of a wire rope supporting the mesh surface is adjusted, or the support point of the mesh surface is moved left and right. Maintenance of surface accuracy is performed.
However, the number of adjustment points to be maintained is as many as those on the solid surface, and the time and labor required for the adjustment are enormous.

On the other hand, an antenna installed in a space station or the like must be easily deployable in outer space, must be small in size and simple in structure due to the limitation of launch weight, and must be used under severe temperature conditions. Since it is exposed, it is necessary to make frequent adjustments in order to maintain the surface accuracy, and it is desired that the adjustments can be performed efficiently. It is also desired that deployment tests on the ground before launch, adjustment of surface accuracy, etc. can be easily performed.

[0006]

In maintaining the surface accuracy so as to have a predetermined surface shape as described above, conventionally, since there are many adjustment locations, many adjustment mechanisms are required and a wide adjustment space is required. The adjustment required a lot of time and effort. SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a purpose thereof is to make it possible to efficiently adjust a surface shape with a simple configuration and to increase a surface shape without increasing the weight required for adjustment. It is to provide an adjustment system.

[0007]

SUMMARY OF THE INVENTION A surface shape adjusting system according to the present invention has a surface forming member for forming a predetermined surface shape, and the surface forming member is attached to the surface forming member to support the surface forming member on a support structure. A plurality of struts, and a movement adjusting body that moves while gripping these struts and adjusts the surface shape of the surface forming body by moving a mounting portion of the surface forming body of the strut forward and backward. It is characterized by the following.

[0008] Further, the movement adjusting body can hold the support body.
The constructed gripper part is attached to both ends of the arm part via the rotation drive part.
And the tip of the support body is moved back and forth to the gripper part.
Characterized in that an adjusting drive unit for attaching is mounted.
In addition, when a plurality of movement adjustment bodies are provided,
Both note that they are capable of performing collaborative work.
In addition, the movement adjusting body has a plurality of rotations.
With the freedom of movement
It is characterized in that a different movement is possible .

[0009]

The surface shape adjusting system configured as described above moves while sequentially grasping between the plurality of columns supporting the surface forming body, and moves to move the attached portion of the surface forming body of the column body back and forth. An adjustment body is provided, and the movement adjusting body moves while sequentially gripping adjacent struts to a portion of the strut where the surface formation does not have a predetermined surface shape, and the surface formation body of the strut is moved there. The surface forming body is made to have a predetermined surface shape by moving back and forth the attachment portion. In this manner, the adjustment of the surface shape can be efficiently performed by the simple and lightweight structure.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

First, a first embodiment will be described with reference to FIGS. 1 is a configuration diagram of a system, FIG. 2 is a plan view of an antenna, FIG. 3 is a perspective view of a movement adjustment body, and FIG. 4 is a diagram illustrating a gripping state of a support body by a gripper portion of the movement adjustment body. FIG. 5 to FIG. 11 are views for explaining the state of movement of the movement adjusting body.

In FIG. 1 to FIG. 4, reference numeral 1 denotes a surface shape adjusting system for the antenna surface 3 of the parabolic antenna 2. In addition, the parabolic antenna 2 is formed such that an antenna surface 3 is formed by connecting six triangular surface forming members 4 as a surface forming body, and the opening shape is hexagonal. It is supported by being fixed to the side 6 of the support structure 5.

The support structure 5 has a number of columns 8 on the bottom 7.
These pillars 8 are arranged such that adjacent ones are provided at equal distances from each other. An error adjusting portion 9 is provided at a position at the same height from the bottom portion 7 at a tip portion of the support body 8, and the tip portion of the error adjusting portion 9 is attached to the parabolic antenna 2. When the error adjusting unit 9 is driven, the tip end is supported by the support body 8.
, The antenna surface 3 of the parabolic antenna 2 moves up and down.

The support structure 5 may be a foldable unfolded structure.

Numeral 10 designates a plurality of movement adjusters provided for the parabolic antenna 2, which are provided with grippers 12 a and 12 b for gripping the support 8 at both ends of the arm 11. The arm 11 and the grippers 12a, 12b
Are connected via rotation drive units 13a and 13b, and are rotatable in the same horizontal plane by driving the rotation drive units 13a and 13b.

The gripper portions 12a and 12b include a first gripper 14a and 14b and a second gripper 15a and
The first and second grippers 14a and 14b and the second grippers 15a and 15b can be opened and closed by being driven by a drive source (not shown). The holding operation of the column 8 can be performed. Adjustment motors 17a, 17b are attached to the first grippers 14a, 14b so that the rotation axis is parallel to the axial direction of the column body 8, and the driving gears 18a, 1 are attached to the rotation axes.
8b is attached.

The inner surfaces of the first grippers 14a and 14b and the second grippers 15a and 15b are provided with gripper portions 1a and 1b.
Grooves 19 are cut in a direction parallel to the direction of rotation of 2a, 12b, and adjustment motors 17a, 17
b, and current collecting electrodes 20 and 21 electrically connected to the rotation driving units 13a and 13b and the like. Further, on the inner surface, signal electrodes 22 and 23 for transmitting and receiving a control signal for controlling the operation of the movement adjusting body 10 are provided.

It should be noted that the movement adjusting body 10 is
By gripping the support body 8 with the a and 12b, the driving power of the rotation drive units 13a and 13b and the like from the current collecting electrodes 20 and 21 is received, and a control signal is transmitted and received between the signal electrodes 22 and 23. Then, it can be moved so as to sequentially walk the adjacent support members 8.

On the other hand, the column body 8 has an error adjusting section 9 formed at the distal end of a cylindrical column 24 having a bottom end fixed to the bottom section 7, and the error adjusting section 9 is provided at the distal end of the column 24. A screw 25 is formed, and an adjusting nut 26 of a cap nut having a tapered tip is screwed to the screw 25. A gear 27 is formed on the outer peripheral surface of the adjustment nut 26. The gear 27 is driven to rotate, so that the adjustment nut 26 rotates. The antenna surface 3 of the attached parabolic antenna 2 moves back and forth.

A flange-like protrusion 28 is formed on the upper outer surface of the column 24 so that the tip portion becomes gradually thinner. The driving electrodes 29, 3 are sandwiched by the flange-like protrusion 28.
0, and further on the outer surface, the signal electrodes 31,
32 are provided. Driving power is supplied from a driving power supply (not shown) to the driving electrodes 29 and 30, and the signal electrodes 31 and 32 are connected to a driving control unit 33.

Reference numeral 34 denotes a central processing unit, for example, an antenna surface disposed on the back surface of the parabolic antenna 2 adjacent to the support 8 and provided with a displacement sensor (not shown) for detecting a displacement of the surface shape of the antenna surface 3. A signal from the accuracy measuring device 35 is input, and a difference between the input signal and a preset surface shape of the antenna surface 3 is calculated. Then, the adjustment amount of each part of the antenna surface 3 is determined, and at the same time, the movement path of the movement adjustment body 10 is determined, and a signal corresponding to the drive control unit 33 is output.

In the drive control unit 33, a signal from the central processing unit 34 is obtained and a control signal is transmitted to the signal electrodes 31 and 32 of each column 8 and the drive electrodes 29 and 30 are controlled by the drive control unit 33. Driving power is supplied from a controlled driving power supply. The movement state of the movement adjustment body 10 is conversely fed back to the central processing unit 34 via the signal electrodes 31 and 32 and the drive control unit 33 to be managed.

With such a configuration, the gripper portion 12a of the movement adjusting body 10 grips the column 8 so that the groove 19 engages with the flange-shaped protrusion 28, and thereby the signal of the gripper portion 12a is obtained. The electrodes 22 and 23 are connected to the signal electrodes 31 and 32 of the support 8, and the current collecting electrodes 20 and 21 are connected to the driving electrodes 29 and 30. Further, the drive gear 18a of the adjustment motor 17a and the gear 27 of the adjustment nut 26 of the error adjuster 9 engage.

Then, the movement adjusting body 10 and the central processing unit 3
4, the drive control unit 33 and the signal electrodes 22, 23,
While signals are transmitted and received via the signal electrodes 31 and 32, driving power is transmitted from the driving electrodes 29 and 30 to the adjustment motor 17a and the rotation driving unit 13a via the collecting electrodes 20 and 21. Supplied. As a result, the adjustment motor 17
a rotates forward and backward by a predetermined amount, and the drive gear 18a rotates to rotate the gear 27 of the error adjuster 9.

By this rotation, the adjustment nut 26 screwed into the screw 25 at the tip of the support column 24 advances and retreats by a predetermined amount, and the parabolic antenna 2 attached to the tip of the adjustment nut 26 is rotated.
The antenna surface 3 moves up and down, and the error adjustment of the antenna surface 3 at the portion of the support body 8 gripped so as to have a preset surface shape is performed.

When the predetermined error adjustment is completed, the gripper unit 1
The first gripper 14a and the second gripper 15a are opened by driving 2a, and the gripping state is released. Then arm 1
The drive units 13a and 13b at both ends of the first unit 1 are driven in cooperation with each other to disengage the gripper unit 12a from the column 8 and move to the next adjacent column 8 to move the adjacent column 8 with the gripper unit 12a. Hold.

In order to continue the movement, the gripper 12b is released from the gripping state, and the rotation driving units 13a, 13b
Are driven in cooperation with each other to grip another support body 8 with the gripper portion 12b. By repeating this operation, the movement adjustment body 10 moves between the plurality of columns 8 and performs a predetermined error adjustment operation with each column 8. In addition, the plurality of movement adjusting bodies 10 are driven in parallel based on a command from the central processing unit 34 to perform cooperative operations with each other.

Next, details of the movement of the movement adjusting body 10 will be described with reference to FIGS. The following description describes a process in which the movement adjusting body 10 moves from a state in which the column 8a and the column 8b are gripped to a state in which the column 8c and the column 8b are gripped.

First, FIG. 5 is a diagram showing an initial grip state.
The movement adjustment body 10 grips the support 8a with the gripper 12a, and grips the support 8b with the gripper 12b.

In the first step shown in FIG.
b, the arm 8 is held stationary while the support 8b is held,
The first gripper 14a and the second gripper 15a are opened by driving the gripper unit 12a, and the state in which the support body 8a is gripped is released.

In the second step shown in FIG.
b while the support body 8b is gripped by the rotary drive unit 13b
To rotate the arm 11 in the direction of arrow A. Then, the support body 8a is positioned outside the turning radius of the gripper section 12a by the turning drive section 13a.

In the third step shown in FIG.
With the first gripper 14a and the second gripper 15a closed, the support body 8b is gripped by the gripper portion 12b, and the arm portion 11 is stopped, the rotation drive portion 13a is driven to move the gripper portion 12a to an arrow. Rotate in the B direction. The gripper unit 1 is set within the turning radius of the arm unit 11 by the turning drive unit 13b.
It is folded so that 2a is located.

In a fourth step shown in FIG.
b while the support body 8b is gripped by the rotary drive unit 13b
To rotate the arm 11 in the direction of arrow C. Then, the gripper portion 12a is attached to the support body 8c, and the rotation drive portion 13a
To bring the gripper portion 12a closer to a range where the gripper portion 12a does not contact the support body 8c.

In a fifth step shown in FIG.
The first gripper 14a and the second gripper 15a of the gripper portion 12a are opened while the arm 8 is held still by holding the support body 8b with 2b.

In the sixth step shown in FIG.
The rotation drive unit 13 holds the support 8b while holding the support 8b with 2b.
b to rotate the arm 11 in the direction of arrow D, and simultaneously drive the rotation drive unit 13a to rotate the gripper unit 12a in the direction of arrow E, thereby opening the first gripper 14a and the second gripper 14a. The support 8c is positioned at a predetermined position in the middle of the gripper 15a.

Then, the first gripper 14a and the second gripper 15a of the gripper section 12a are closed, and the gripper section 12a is closed.
The support body 8c is gripped by a. In this manner, the movement of the movement adjusting body 10 from the state in which the column 8a and the column 8b are gripped to the state in which the column 8c and the column 8b are gripped is completed.

According to the present embodiment configured as described above, the movement adjusting body 10 moves between the plurality of columns 8 and performs the error adjusting work by the error adjusting unit 9 having a simple configuration. The adjustment of the surface shape of 3 can be easily and efficiently performed without requiring much time and labor, and the surface accuracy can be easily maintained.

Further, the movement adjusting body 10 can easily move even when the space between the parabolic antenna 2 and the supporting structure 5 is narrow, and the whole structure can be reduced in size. Since it is not necessary to have an adjustment mechanism having a drive source described above, the surface shape adjustment system 1 can be reduced in weight.

Further, since a plurality of movement adjusting bodies 10 are provided, the error adjusting work can be executed efficiently by distributing them or arranging them in a concentrated manner to perform a cooperative operation. In addition, there is no fear that the work cannot be performed even if one of the movement adjusting bodies 10 fails.

Next, a second embodiment will be described with reference to FIG. FIG. 12 is a plan view of the movement adjustment body.

In FIG. 12, the arm 3 of the movement adjusting body 36
7 is a first arm 38, a second arm 39, and a first arm 3
Joint 4 having a rotation drive unit connecting the second arm 39 to the second arm 39
The joint 40 has the same rotation surface as the rotation drive units 13a and 13b provided at both ends of the arm 37.

In the case of using the movement adjusting body 36 configured as described above, the arm 37 is provided by providing the joint 40.
, The same effect as that of the first embodiment can be obtained, and the time required for the movement adjusting body 36 to move between the columns 8 can be shortened.

Next, a third embodiment will be described with reference to FIG. FIG. 13 is a side view showing a cross section of a part of the movement adjustment body.

In FIG. 13, the arm 4 of the movement adjusting body 41
2 comprises a first arm 43 and a cylindrical second arm 44. And the first arm 43 has its second arm 44
A female spiral hole 45 is formed in the axial direction on the side, and a male spiral rod 46 extending in the axial direction is provided in the second arm 44.
The male spiral rod 46 has a root fixed to the rotating shaft of the electric motor 47 and a distal end screwed into the female spiral hole 45 of the first arm 43.

In the apparatus using the movement adjusting body 41 configured as described above, the male screw 47 moves in and out of the female screw hole 45 by rotating the motor 47 in the normal and reverse directions, and the length of the arm 42 expands and contracts. . Therefore, the same effect as that of the first embodiment can be obtained, and the time required for the movement adjusting body 41 to move between the columns 8 can be shortened.

It should be noted that the present invention is not limited to those described in the above embodiments, and may be used not only for adjusting the surface shape of the antenna surface 3 of the parabolic antenna 2 but also for changing the directional direction. The surface shape may be a curved surface or a flat surface, and it may be used for a condensing / reflecting surface for optical light, a special screen for displaying irregularities on the surface, an amusement mirror for changing the appearance, and the like. Further, even when a continuous large surface forming body is supported by a plurality of pillars 8 to have a predetermined surface shape, a plurality of divided surface forming bodies are supported by the pillars 8 respectively, and a predetermined surface shape is obtained as a whole. It can also be applied to

Further, for example, the movement adjusting bodies 10, 36, 4
1, the number of degrees of freedom of rotation may be increased, and the position where the error adjusting unit 9 is provided may be changed so as to have not only a movement within a plane but also a movement trajectory having a height difference, and the gripper units 12a, 1
The gripping operation of the first grippers 14a and 14b and the second grippers 15a and 15b of the 2b may be performed using an electric motor as a driving source or an attractive force of an electromagnet. It can be carried out by appropriately changing it.

[0048]

As is apparent from the above description, according to the present invention, a plurality of pillars supporting a surface forming body are moved while being sequentially gripped to advance and retreat a mounting portion of the surface forming body of the pillar. With the configuration including the movement adjusting member to be moved, effects such as that the surface shape can be adjusted efficiently with a simple and lightweight configuration can be obtained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a plan view of the parabolic antenna in the above.

FIG. 3 is a perspective view of the movement adjustment body in the same.

FIG. 4 is a cross-sectional view of a main part showing a gripping state of a support body by a gripper portion of the movement adjusting body in the same.

FIG. 5 is a diagram showing a gripping state of the movement adjustment body at the beginning of the movement in the same.

FIG. 6 is a diagram showing a gripping state in a first process of the movement of the movement adjusting body in the above.

FIG. 7 is a diagram showing a gripping state in a second process of the movement of the movement adjusting body in the above.

FIG. 8 is a diagram showing a gripping state in a third process of moving the movement adjusting body in the above.

FIG. 9 is a diagram showing a gripping state in a fourth process of the movement of the movement adjustment body in the above.

FIG. 10 is a diagram showing a grip state in a fifth process of the movement of the movement adjustment body in the above.

FIG. 11 is a diagram showing a grip state in a sixth process of the movement of the movement adjustment body in the above.

FIG. 12 is a plan view of a movement adjusting body according to a second embodiment.

FIG. 13 is a side view showing a cross section of a part of the movement adjusting body of the third embodiment.

[Explanation of symbols]

 2: Parabolic antenna 3: Antenna surface 5: Support structure 8: Support body 9: Error adjustment unit 10: Movement adjustment body

Continuation of the front page (56) References JP-A-60-32411 (JP, A) JP-A-4-119702 (JP, A) JP-A-59-149402 (JP, A) JP-A-2-312304 (JP) JP-A-63-105503 (JP, A) JP-A-4-119002 (JP, A) JP-A-59-63507 (JP, U) JP-A-62-44511 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H01Q 15/14-15/16 G02B 5/10

Claims (4)

(57) [Claims] 1. A surface forming body for forming a predetermined surface shape,
A plurality of pillars for attaching the surface forming body and supporting the surface forming body on the support structure, and moving while gripping these pillars, and attaching the surface forming body to the mounting portion of the pillar. A surface adjusting member for adjusting a surface shape of the surface forming member by moving the surface forming member forward and backward. 2. A structure in which a movement adjusting body can grip a support body.
Gripper parts are provided at both ends of the arm part via a rotation drive part
And the tip of the support body is moved back and forth to the gripper part.
2. An adjustment drive unit is mounted.
The surface shape adjustment system described. 3. When a plurality of movement adjusting bodies are provided,
Are characterized by their ability to perform collaborative work
The surface shape adjustment system according to claim 1. 4. The movement adjusting body has a plurality of rotational degrees of freedom.
Movement with a height difference along with in-plane movement
3. The surface shape according to claim 1, wherein
Adjustment system.