Telescopic antenna conversion support
By designing a telescopic antenna conversion bracket with adjustable height legs, the problem of non-adjustable bracket height in the prior art is solved, the height adaptability of the bracket is achieved, the operation process is simplified, and the convenience is improved.
Patent Information
- Application Number
- CN202422806840.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-18
AI Technical Summary
In the prior art, the height of the telescopic antenna bracket is not adjustable, which results in the need to customize two sets of brackets when conducting electric field radiation emission tests under different standards, increasing the workload and making adjustment inconvenient.
A telescopic antenna conversion bracket is designed, which includes a mobile base, a ground grid support platform and adjustable legs. The height of the ground grid support platform can be adjusted by the adjustable legs to adapt to the requirements of telescopic antennas and test desktops of different heights.
The height of the telescopic antenna bracket is adjustable, which simplifies the operation process, reduces the workload, and improves the convenience and adaptability of adjustment.
Smart Images
Figure CN223347985U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electric field radiation emission test, in particular to a pull rod antenna conversion bracket. Background Art
[0002] When conducting electric field radiated emission tests on military electronic products, a 104cm rod antenna with an impedance matching network is required for the test frequency range of 10kHz-30MHz. The GJB 151A standard requires that the ground grid of the whip antenna be directly connected to the ground plane via bonding strips, with the grid and ground plane at the same height. In contrast, the GJB 151B standard requires grounding through the coaxial cable shield, with a ferrite bead added at the coaxial cable's midpoint. Furthermore, the center of the antenna rod is maintained at a height of 120cm above the ground plane. The primary differences in the whip antenna layout between the two standards lie in the grounding method and the height of the grid. GJB 151A specifies that the grid should be at the same height as the test table, while GJB 151B specifies that the center of the whip antenna be 120cm above the ground plane. Both GJB 151A and 151B require a test bench height of 80cm-90cm. The center heights of the two standard pull-down rod antennas differ by at least 12cm. Therefore, when conducting electric field radiated emission tests, the rod antenna height must be adjusted based on the difference between the product implementation standard and the test bench height. The test bench height has been fixed during the laboratory capacity building process. While customizing two sets of brackets can meet these requirements, antenna replacement increases the workload for test personnel, leading to issues such as lengthy processing time, difficulty in controlling height adjustment, and inconvenience for single-person operation. Utility Model Content
[0003] The utility model aims to solve the problem in the prior art that the height of a telescopic antenna bracket cannot be adjusted, and to provide a novel telescopic antenna conversion bracket.
[0004] In order to achieve this purpose, the technical solution of the present invention is as follows: A telescopic antenna conversion bracket, comprising: a mobile base, a ground grid support platform and an adjustable height leg between the mobile base and the ground grid support platform. The adjustable height leg has a leg fixed cylinder and a leg movable rod. The leg fixed cylinder surrounds the outer periphery of the leg movable rod and the two are matched with each other in the axial hole. The leg movable rod can move along the leg fixed cylinder. The leg fixed cylinder has a cylinder pin hole, and the leg movable rod has more than two rod pin holes of different heights. When the pin of the cylinder pin hole is selectively connected to one of the rod pin holes, the leg movable rod is locked.
[0005] As a preferred solution of the telescopic antenna conversion bracket, the mobile base has a base disc and universal wheels on the bottom surface of the base disc, the universal wheels are against the ground, and the universal wheels are used to support the base disc.
[0006] As a preferred solution for the telescopic antenna conversion bracket, the universal wheel is provided with a brake.
[0007] As a preferred solution for the telescopic antenna conversion bracket, the ground grid support platform extends in length along the left and right directions, and the left part of the ground grid support platform has the platform circular through hole; the middle part of the ground grid support platform is fixedly connected to the movable rod part of the support leg; the right part of the ground grid support platform is formed with the platform elongated through hole, and the platform elongated through hole extends along the left and right directions.
[0008] As a preferred solution for the telescopic antenna conversion bracket, the movable rod portion of the support leg has four rod pin holes at different heights.
[0009] Compared with the prior art, the present invention has at least one beneficial effect: the adjustable height legs can adjust the working height of the ground grid support platform to meet the different height requirements of telescopic antennas and test desks. The telescopic antenna conversion bracket has the characteristics of simple structure, reliable use, and small space occupation. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a structural front view of an embodiment of the present utility model.
[0011] Figure 2 It is a top view of the structure of an embodiment of the present utility model. DETAILED DESCRIPTION
[0012] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
[0013] See Figure 1 and Figure 2 , shown in the figure is a telescopic antenna conversion bracket.
[0014] The telescopic antenna conversion bracket includes: a mobile base 1, a ground grid support platform 2 and adjustable height legs 3. The adjustable height legs 3 are located between the mobile base 1 and the ground grid support platform 2.
[0015] The mobile base 1 can move freely along the ground. The mobile base 1 has a base disc 11 and a universal wheel 12 on the bottom surface of the base disc 11. The universal wheel 12 is against the ground. The universal wheel 12 is used to support the base disc 11. Preferably, the universal wheel 12 is equipped with a brake. In a specific implementation, the ground grid support platform 2 is a rectangular structure, the diameter of the base disc 11 is smaller than the length of the ground grid support platform 2, and the diameter of the base disc 11 is equal to or substantially equal to the width of the ground grid support platform 2.
[0016] The ground grid support platform 2 is above the mobile base 1. The ground grid support platform 2 is used to support the antenna ground grid (not shown in the figure). During specific implementation, the top surface of the ground grid support platform 2 is fixed to the antenna ground grid. The ground grid support platform 2 extends in length along the left-right direction. The ground grid support platform 2 has a left platform portion 21, a middle platform portion 22, and a right platform portion 23. The left platform portion 21 is formed with a circular through hole 210. The circular through hole 210 is used to place a rod antenna amplifier. The middle platform portion 22 is fixedly connected to the adjustable height support leg 3. The right platform portion 23 is formed with an elongated through hole 230. The elongated through hole 230 extends along the left-right direction. The elongated through hole 230 is used for the installation and overlap of the antenna ground grid.
[0017] The adjustable height support leg 3 is used to support the ground grid support platform 2 and adjust the working height of the ground grid support platform 2. The adjustable height support leg 3 has a support leg fixed cylinder 31 and a support leg movable rod 32. The support leg fixed cylinder 31 is erected on the base disc 11 of the mobile base 1. The support leg fixed cylinder 31 surrounds the outer periphery of the support leg movable rod 32 and the two are matched with each other in the axial hole. The support leg movable rod 32 can move along the support leg fixed cylinder 31. The support leg fixed cylinder 31 has a cylinder pin hole. The support leg movable rod 32 has a rod pin hole corresponding to the cylinder pin hole. The support leg fixed cylinder 31 and the support leg movable rod 32 are locked by a pin 33. In specific implementation, the support leg fixed cylinder 31 has a cylinder pin hole, and the support leg movable rod 32 has four rod pin holes at different heights, that is, the ground grid support platform 2 has four different height gears, which can meet the different requirements of telescopic antennas and test desktops of different heights, such as GJB151A and GJB151B.
[0018] While the above merely describes the embodiments of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.
Claims
1. A telescopic antenna conversion bracket, characterized in that: include: A movable base, a ground grid support platform and an adjustable height support leg between the movable base and the ground grid support platform; wherein the adjustable height support leg has a support leg fixed cylinder and a support leg movable rod, the support leg fixed cylinder surrounds the periphery of the support leg movable rod and the two are matched with each other in the axial hole, and the support leg movable rod can move along the support leg fixed cylinder; the support leg fixed cylinder has a cylinder pin hole, and the support leg movable rod has more than two rod pin holes of different heights, and when the pin of the cylinder pin hole is selectively connected to one of the rod pin holes, the support leg movable rod is locked.
2. The telescopic antenna conversion bracket according to claim 1, characterized in that: The mobile base comprises a base disc and a universal wheel on the bottom surface of the base disc, wherein the universal wheel abuts against the ground and is used to support the base disc.
3. The telescopic antenna conversion bracket according to claim 2, characterized in that: The universal wheel is provided with a brake.
4. The telescopic antenna conversion bracket according to claim 1, characterized in that: The ground grid support platform extends in length along the left and right directions, and a circular through hole is provided on the left portion of the ground grid support platform, and the circular through hole is used to place the pole antenna amplifier; the middle portion of the ground grid support platform is fixedly connected to the movable rod portion of the support leg; a long through hole is formed on the right portion of the ground grid support platform, and the long through hole extends in the left and right directions, and the long through hole is used for the installation and overlap of the antenna ground grid.
5. The telescopic antenna conversion bracket according to claim 1, characterized in that: The supporting leg movable rod is provided with four rod pin holes at different heights.