CN111183745B - Radar antenna pitching pushing structure for eliminating invalid component force of lead screw - Google Patents
Radar antenna pitching pushing structure for eliminating invalid component force of lead screw Download PDFInfo
- Publication number
- CN111183745B CN111183745B CN201218005646.0A CN201218005646A CN111183745B CN 111183745 B CN111183745 B CN 111183745B CN 201218005646 A CN201218005646 A CN 201218005646A CN 111183745 B CN111183745 B CN 111183745B
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- China
- Prior art keywords
- antenna
- lead screw
- tension rod
- rigid support
- component force
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The invention relates to a radar antenna pitching pushing structure for eliminating ineffective component force of a lead screw, which comprises a first hinge, a second hinge, a rigid support, a lead screw push rod, a base and a rigid support, wherein the first hinge is connected with the second hinge; it is characterized by also comprising a tension rod; the tension rod is of a double-rod structure, one end of the tension rod is rigidly connected with the antenna rigid support, and the other end of the tension rod is rigidly connected with the rigid support. The invention provides a radar antenna pitching pushing structure for eliminating ineffective component force of a lead screw, and provides a tension rod structure.
Description
Technical Field
The invention belongs to a mechanical structure, mainly relates to a cooperative working structure of a radar antenna pitching pushing mechanism, and particularly relates to a radar antenna pitching pushing structure for eliminating ineffective component force of a lead screw.
Background
The existing phased array radar adopts a large antenna array, the large antenna array is arranged in an antenna frame, the antenna frame is a welded or riveted frame or an integral casting, the appearance of the assembled antenna is similar to a cuboid, and the cross section of the assembled antenna is similar to a parallelogram. The parallelogram is an unstable structure and is easily deformed by an external force parallel to the side. The pitching rotation motion of the radar antenna is mostly completed by adopting a pushing mechanism which takes a lead screw as a main driving part, and the lead screw changes the rotation motion of a control motor into linear motion to push the antenna to pitch and rotate. The lead screw is connected with the antenna by a rotary hinge, the lead screw only provides axial force to act on the antenna through the hinge, the axial force is divided into two parts of Fa and Fr shown in figure 2, Fr overcomes torque generated by gravity G to drive the antenna to rotate, Fa is an ineffective component force and acts on an antenna frame with a cross section similar to a parallelogram to cause deformation of the antenna frame, and then the antenna array is deformed to influence the performance of the antenna. The traditional approach to this problem is to strengthen the rigidity of the antenna frame to resist deformation, which increases the weight and volume of the antenna and increases the difficulty and cost of the manufacturing process. In order to meet the requirements of modern war, the power of radar is getting larger and larger, so the size of the required radar antenna is also increased, and for the antenna frame with the increasing size, the difficulty and the cost for improving the rigidity of the antenna frame are getting larger and larger, which has become a great problem in the design of the antenna structure.
Disclosure of Invention
In order to avoid the defects of the prior art, the invention provides a radar antenna pitching pushing structure for eliminating the invalid component force of a lead screw, and the invalid component force of the lead screw acting on a radar antenna is completely eliminated by a simple tension rod structure.
A radar antenna pitching pushing structure for eliminating invalid component force of a lead screw comprises a first hinge 1, a second hinge 2, a rigid support 4, a lead screw push rod 5, a base 6 and a rigid support 8; it is characterized by also comprising a tension rod 7; the tension rod 7 is of a double-rod structure, one end of the tension rod is rigidly connected with the antenna rigid support 4, and the other end of the tension rod is rigidly connected with the rigid support 8.
The tension rod 7 is provided with an L-shaped structure with an angle larger than 90 degrees at the position connected with the rigid support 8.
The invention provides a radar antenna pitching pushing structure for eliminating ineffective component force of a lead screw, and provides a tension rod structure, which is connected with an antenna rigid support through a hinged pin and is connected with a hinge rigid seat between an antenna and the lead screw through threads, as shown in figure 3(a), the ineffective component force generated when the lead screw pushes the antenna to rotate is transmitted to a base through a hinge, a hinge seat, a screw, the tension rod, a pin, an antenna rigid support frame and a hinge, and an antenna frame only bears the rotation moment to do rotation movement and does not bear other external force.
The invention can eliminate the invalid component force of the lead screw acting on the radar antenna, improve the stress condition of the antenna, eliminate the deformation of the antenna and improve the performance of the radar antenna.
The invention eliminates the ineffectiveness of the lead screw on the radar antenna frame through the tension rod structure, thoroughly changes the laggard design and process for continuously strengthening the rigidity of the antenna frame, improves the performance of the antenna system and effectively reduces the processing cost of the radar system.
Drawings
FIG. 1: schematic diagram of radar antenna pitching pushing structure for eliminating ineffective component force of lead screw
1-a first hinge, 2-a second hinge, 3-an antenna, 4-a rigid support, 5-a lead screw push rod, 6-a base, 7-a tension rod and 8-a rigid support;
FIG. 2: the ineffective component force schematic diagram of the lead screw in the existing structure when working;
a: schematic diagram of an antenna pushing mechanism; b: an antenna diagram;
FIG. 3: the structure of the invention is a schematic diagram of the ineffective component force of the lead screw during working;
a: a schematic diagram of an antenna pushing mechanism behind a tension rod; b: and a tension rod rear antenna force diagram is added.
Detailed Description
The invention will now be further described with reference to the following examples and drawings:
taking a certain antenna as an example, the antenna comprises a first hinge 1, a second hinge 2, a rigid support 4, a screw rod and push rod 5, a base 6, a tension rod 7 and a rigid support 8; the tension rod 7 is provided with an L-shaped structure with the angle larger than 90 degrees at the position connected with the rigid support 8, the tension rod 7 is of a double-rod structure, one end of the tension rod is rigidly connected with the antenna rigid support 4, and the other end of the tension rod is rigidly connected with the rigid support 8.
The working principle is shown in figure 3: the antenna rigid support 4, the tension rod 7 and the lead screw pusher 5 form a "stand" which can rotate around the hinge 1, and the components mounted thereon only bear the weight force and the supporting force thereof. This is because the resultant force in the horizontal direction of the pushing force F by the lead screw pusher 5 and the pulling force Fla by the pulling rod is 0, and is equal to the difference between the weight G of the antenna and the supporting force F2 of the antenna holder in the vertical direction, which acts to push the antenna to rotate.
The invention eliminates the ineffectiveness of the lead screw on the radar antenna frame through the tension rod structure, thoroughly changes the laggard design and process for continuously strengthening the rigidity of the antenna frame, improves the performance of the antenna system and effectively reduces the processing cost of the radar system.
Claims (2)
1. A radar antenna pitching pushing structure for eliminating invalid component force of a lead screw comprises a first hinge (1), a second hinge (2), a rigid support (4), a lead screw push rod (5), a base (6) and a rigid support (8); it is characterized by also comprising a tension rod (7); the tension rod (7) is of a double-rod structure, one end of the tension rod is rigidly connected with the antenna rigid support (4), and the other end of the tension rod is rigidly connected with the rigid support (8).
2. The radar antenna pitching pushing structure for eliminating the ineffective component force of the lead screw according to claim 1, wherein: the tension rod (7) is provided with an L-shaped structure with an angle larger than 90 degrees at the position connected with the rigid support (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201218005646.0A CN111183745B (en) | 2012-11-08 | 2012-11-08 | Radar antenna pitching pushing structure for eliminating invalid component force of lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201218005646.0A CN111183745B (en) | 2012-11-08 | 2012-11-08 | Radar antenna pitching pushing structure for eliminating invalid component force of lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111183745B true CN111183745B (en) | 2015-10-28 |
Family
ID=70614718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201218005646.0A Expired - Fee Related CN111183745B (en) | 2012-11-08 | 2012-11-08 | Radar antenna pitching pushing structure for eliminating invalid component force of lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111183745B (en) |
-
2012
- 2012-11-08 CN CN201218005646.0A patent/CN111183745B/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR03 | Grant of secret patent right | ||
| GRSP | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DC01 | Secret patent status has been lifted | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20211108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |