Fixing tool for darkroom test of radio direction finder
By designing a fixed tool for radio direction finder, the problem of fixed height and limited data of the turntable is solved, automatic calibration and height adjustment are realized, the range of test data is expanded, and the accuracy and stability of the direction finder is ensured.
Patent Information
- Application Number
- CN202422955589.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing radio direction finders have problems with fixed turntable height and limited direction finding data in darkroom testing, and each installation of different equipment requires recalibration.
A fixed tool is designed, including a first mounting plate, a second mounting plate and an adjustable height mounting assembly, which is connected to the rotary table through the first mounting plate to ensure that the center projection of the radio direction finder falls on the axis of symmetry and realizes automatic calibration. , and improve stability and height adjustment through fixed bracket and slide slide structure.
It realizes automatic installation and height adjustment without manual calibration, expands the collection range of direction finding data, and ensures the direction finding accuracy and test stability of the direction finding instrument.
Smart Images
Figure CN222299775U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of direction finder testing, in particular to a fixing tool for darkroom testing of a radio direction finder. Background Art
[0002] A radio direction finder is a radio receiving instrument that can determine the direction of a radio transmitter. It consists of an antenna, a goniometer, a receiver, a direction indicator and a speaker. It is widely used in radio communications, navigation, radar and address exploration. Its working principle is to help determine the position and direction of the signal source by receiving and analyzing radio waves. It can be divided into handheld direction finders, fixed direction finders and mobile direction finders. The mobile direction finder is installed on a vehicle, ship or aircraft and is used to locate the signal source during movement.
[0003] When a radio direction finder is used on a vehicle, ship or aircraft, it needs to undergo a number of tests, including darkroom testing to ensure the direction finding accuracy of the radio direction finder. A darkroom generally refers to a special room composed of absorbing materials and metal shielding. This room can effectively prevent multiple reflections of electromagnetic waves, isolate interference from external electromagnetic waves, and provide a stable electromagnetic environment. The experiment of using a radio direction finder to find the direction in a darkroom is called a darkroom test.
[0004] At present, when conducting darkroom tests on radio direction finders, the radio direction finder is usually installed directly on a turntable, and the corresponding direction finding data is obtained by rotating the turntable. However, this method has the following problems: 1) The turntable is fixed in height and can only rotate horizontally, so the direction finding data that can be obtained is limited; 2) Each time a different radio direction finder device is installed, it needs to be recalibrated. Utility Model Content
[0005] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a fixing tool for darkroom testing of a radio direction finder, the tool comprising a first mounting plate, a second mounting plate and two fixing brackets, the first mounting plate being used to connect to a turntable in a test system, and the center of the first mounting plate coincides with the center of the turntable, one side of the first mounting plate is vertically connected to one side of the second mounting plate, and the projection of a line between the center of the first mounting plate and the center of the second mounting plate coincides with the axis of symmetry of the first mounting plate, two ends of one fixing bracket are respectively connected to one side of the first mounting plate and one side of the second mounting plate, two ends of another fixing bracket are respectively connected to the other side of the first mounting plate and the other side of the second mounting plate, the second mounting plate is symmetrically provided with height-adjustable mounting components, and the mounting components are used to fix the radio direction finder.
[0006] The utility model is realized by the following technical scheme: the scheme is connected to the turntable in the test system through the first mounting plate, and the center of the first mounting plate coincides with the center of the turntable, one side of the first mounting plate is vertically connected to the side of the second mounting plate, and the projection of the line connecting the center of the first mounting plate and the center of the second mounting plate coincides with the symmetry axis of the second mounting plate, and the second mounting plate is symmetrically provided with a mounting assembly with adjustable height. Based on the above arrangement, when the radio direction finder is installed through the mounting assembly, it can be ensured that the center projection of the radio direction finder falls on the symmetry axis of the first mounting plate (the symmetry axis passes through the center of the turntable), and the calibration is completed while the radio direction finder is installed, and no additional calibration is required. At this time, the mounting assembly can also adjust the height, and more test data can be collected when performing darkroom testing. A fixed bracket is also provided on each side of the fixed fixture, and the fixed bracket is used to support the first mounting plate and the second mounting plate to ensure the overall stability of the fixed fixture.
[0007] As an optional technical solution, the mounting assembly includes a group of slides and two groups of sliders, the group of slides being symmetrically arranged on both sides of the second mounting plate, a group of sliders being arranged on each slide, each group of sliders being connected by a telescopic rod, and a locking component being arranged between each slider and each slide.
[0008] As an optional technical solution, the locking component includes a screw and a nut, and each side of each slide is provided with a slide groove matching the screw. One end of the screw passes through the slide groove on one side of the slide, the slider and the slide groove on the other side of the slide in sequence, and is locked by the nut.
[0009] As an optional technical solution, a mounting card is provided on the top of each slider, and the radio direction finder is bolted to all the sliders via the mounting card.
[0010] As an optional technical solution, the first mounting plate and the turntable are connected by bolts.
[0011] As an optional technical solution, the first mounting plate and the second mounting plate are connected by welding.
[0012] As an optional technical solution, a circular hole is provided at the center of the first mounting plate, the center of the circular hole coincides with the center of the turntable, and the first mounting plate is connected to the turntable through the circular hole.
[0013] As an optional technical solution, a plurality of heat dissipation holes are provided on the second mounting plate.
[0014] As an optional technical solution, all the fixing brackets are triangular fixing brackets.
[0015] One or more technical solutions provided by the utility model have at least the following technical effects or advantages:
[0016] The utility model discloses a fixing tool for darkroom testing of a radio direction finder. The fixing tool is connected with a turntable through a first mounting plate, and the center of the first mounting plate coincides with the center of the turntable. The first mounting plate is vertically connected with a second mounting plate, and the projection of a line connecting the center of the first mounting plate and the center of the second mounting plate coincides with the symmetry axis of the second mounting plate. A mounting assembly for fixing the radio direction finder is symmetrically arranged on the second mounting plate, and the height of the mounting assembly is adjustable. In this way, calibration can be completed while the radio direction finder is installed through the mounting assembly, and manual recalibration is not required. The mounting assembly can also adjust the installation height of the radio direction finder, and more test data can be obtained when the same radio direction finder is tested, so as to ensure the accuracy of subsequent direction finding of the radio direction finder. The stability of the tool as a whole is also ensured by arranging a fixing bracket. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of the present utility model, and do not constitute a limitation on the embodiments of the present utility model;
[0018] Figure 1 It is a side view of a fixed tooling used for darkroom testing of a radio direction finder in the utility model;
[0019] Figure 2 It is a front view of a fixed tooling used for darkroom testing of a radio direction finder in the utility model;
[0020] Figure 3 It is a top view of a fixed tooling used for darkroom testing of a radio direction finder in the utility model;
[0021] Among them, 1-first mounting plate, 2-second mounting plate, 3-fixed bracket, 4-slideway, 5-slider, 6-telescopic rod, 7-mounting card, 8-screw, 9-nut, 10-slide groove, 11-round hole, 12-heat dissipation hole. DETAILED DESCRIPTION
[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those within the scope of this description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.
[0024] Example
[0025] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 It is a side view of a fixed tooling used for darkroom testing of a radio direction finder in the utility model; Figure 2 It is a front view of a fixed tooling used for darkroom testing of a radio direction finder in the utility model; Figure 3 It is a top view of a fixing fixture for darkroom testing of a radio direction finder in the utility model. The fixing fixture comprises a first mounting plate 1, a second mounting plate 2 and two fixing brackets 3, the first mounting plate 1 is used to connect with a turntable in a test system, and the center of the first mounting plate 1 coincides with the center of the turntable, one side of the first mounting plate 1 is vertically connected with one side of the second mounting plate 2, and the projection of the line between the center of the first mounting plate 1 and the center of the second mounting plate 2 coincides with the symmetry axis of the first mounting plate 1, the two ends of one fixing bracket 3 are respectively connected with one side of the first mounting plate 1 and one side of the second mounting plate 2, the two ends of another fixing bracket 3 are respectively connected with the other side of the first mounting plate 1 and the other side of the second mounting plate 2, and the second mounting plate 2 is symmetrically provided with height-adjustable mounting components, which are used to fix the radio direction finder.
[0026] The specific embodiments of the present utility model are as follows:
[0027] The first mounting plate 1 is connected to the turntable in the test system, and the center of the first mounting plate 1 coincides with the center of the turntable. One side of the first mounting plate 1 is vertically connected to one side of the second mounting plate 2, and the projection of the line between the center of the first mounting plate 1 and the center of the second mounting plate 2 coincides with the symmetry axis of the first mounting plate 1. The second mounting plate 2 is also symmetrically provided with a mounting assembly for fixing the radio direction finder with an adjustable height. Based on the above embodiment, when the radio direction finder is installed by the mounting assembly, it can be ensured that the center projection of the radio direction finder falls on the symmetry axis of the first mounting plate 1 (the symmetry axis passes through the center of the turntable), that is, the calibration is completed while the radio direction finder is installed, and no additional calibration is required. At this time, the mounting assembly can also adjust the height, and more test data can be collected when the radio direction finder is tested in a darkroom. This embodiment also increases the overall stability of the fixture by arranging fixed brackets 3 on both sides of the fixture.
[0028] This embodiment provides an implementable method for installing the assembly, specifically a group of slides 4 and two groups of sliders 5, wherein the group of slides 4 is symmetrically arranged on both sides of the second mounting plate 2, and a group of sliders 5 is arranged on each slide 4, and each group of sliders 5 is connected by a telescopic rod 6, and a locking component is provided between each slider 5 and each slide 4.
[0029] Among them, for radio direction finders of different sizes, the distance between each group of sliders 5 can be adjusted by a telescopic rod, so as to better fix the radio direction finder; by sliding the sliders 5 on the slide 4 and maintaining the corresponding height through the locking structure, the height of the entire installation assembly is adjusted, that is, the height of the radio direction finder is adjusted.
[0030] This embodiment provides an implementable method of a locking component, specifically including a screw rod 8 and a nut 9, each side of each slide 4 is provided with a slide groove 10 matching the screw rod 8, one end of the screw rod 8 passes through the slide groove 10 on one side of the slide 4, the slider 5 and the slide groove 10 on the other side of the slide 4 in sequence, and is locked by the nut 9.
[0031] When the height of the installation component needs to be adjusted, the nut 9 is loosened, and the slider 5 slides on the slide 4, driving the screw 8, i.e., the nut 9, to slide in the slide grooves 10 on both sides. After sliding to the preset height, the nut 9 is tightened to fix the installation component.
[0032] Furthermore, a mounting card 7 is provided on the top of each slider 5 , and the radio direction finder is bolted to all the sliders 5 via the mounting card 7 .
[0033] The mounting card 7 can facilitate the fixing of the radio direction finder.
[0034] Furthermore, the first mounting plate 1 is connected to the turntable via bolts.
[0035] Furthermore, the first mounting plate 1 and the second mounting plate 2 are connected by welding.
[0036] Furthermore, a circular hole 11 is provided at the center of the first mounting plate 1 , the center of the circular hole 11 coincides with the center of the turntable, and the first mounting plate 1 is connected to the turntable through the circular hole 11 .
[0037] Furthermore, a plurality of heat dissipation holes 12 are provided on the second mounting plate 2 .
[0038] The plurality of heat dissipation holes 12 are used to dissipate heat for the radio direction finder.
[0039] Furthermore, all the fixing brackets 3 are triangular fixing brackets.
[0040] The working principle of the darkroom test by the fixed tooling in this embodiment is as follows: the first mounting plate 1 is connected to the turntable through the circular hole 11, and the center of the circular hole 11 coincides with the center of the turntable; based on the size of the radio direction finder, the distance between each group of sliders 5 is adjusted by adjusting the telescopic rod 6, so as to better fix the radio direction finder. After the adjustment is completed, the mounting card 7 at the top of each slider 5 is connected to the radio direction finder bolt, which plays the effect of fixing the radio direction finder. Since the center of the radio direction finder falls on the symmetry axis of the first mounting plate 1 (the symmetry axis passes through the center of the turntable), no additional calibration is required. At this time, by rotating the turntable, the darkroom test of the radio direction finder can be carried out and the corresponding test data can be collected. After a single test is completed, by loosening the nut 9, the slider 5 slides on the slide 4, driving the screw 8 to slide on the slide 10. When it slides to a preset height, the nut 9 is tightened to adjust the height of the radio direction finder. At this time, by rotating the turntable again, the corresponding test data of the radio direction finder can be collected again. By continuously adjusting the installation height of the radio direction finder, test data about the radio direction finder can be collected multiple times, further ensuring the direction finding accuracy of the subsequent radio direction finder during use.
[0041] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.
[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A fixed fixture for darkroom testing of a radio direction finder, characterized in that: The tooling includes a first mounting plate, a second mounting plate and two fixed brackets, the first mounting plate is used to connect to a turntable in a test system, and the center of the first mounting plate coincides with the center of the turntable, one side of the first mounting plate is vertically connected to one side of the second mounting plate, and the projection of a line between the center of the first mounting plate and the center of the second mounting plate coincides with the axis of symmetry of the first mounting plate, two ends of a fixed bracket are respectively connected to one side of the first mounting plate and one side of the second mounting plate, and two ends of another fixed bracket are respectively connected to the other side of the first mounting plate and the other side of the second mounting plate, and the second mounting plate is symmetrically provided with height-adjustable mounting components, and the mounting components are used to fix a radio direction finder.
2. The fixing device for darkroom testing of a radio direction finder according to claim 1, characterized in that: The mounting assembly includes a group of slides and two groups of sliders. The group of slides is symmetrically arranged on both sides of the second mounting plate. A group of sliders is arranged on each slide. Each group of sliders is connected by a telescopic rod. A locking component is provided between each slider and each slide.
3. The fixing device for darkroom testing of a radio direction finder according to claim 2, characterized in that: The locking component includes a screw and a nut. Both sides of each slideway are provided with slide grooves matching the screw. One end of the screw passes through the slide groove on one side of the slideway, the slider and the slide groove on the other side of the slideway in sequence, and is locked by the nut.
4. The fixing device for darkroom testing of a radio direction finder according to claim 2, characterized in that: A mounting card is provided on the top of each slider, and the radio direction finder is bolted to all the sliders via the mounting card.
5. The fixing device for darkroom testing of a radio direction finder according to claim 1, characterized in that: The first mounting plate is connected to the turntable via bolts.
6. The fixing device for darkroom testing of a radio direction finder according to claim 1, characterized in that: The first mounting plate and the second mounting plate are connected by welding.
7. The fixing device for darkroom testing of a radio direction finder according to claim 1, characterized in that: A circular hole is provided at the center of the first mounting plate, the center of the circular hole coincides with the center of the turntable, and the first mounting plate is connected to the turntable through the circular hole.
8. The fixing device for darkroom testing of a radio direction finder according to claim 1, characterized in that: The second mounting plate is provided with a plurality of heat dissipation holes.
9. The fixing device for darkroom testing of a radio direction finder according to claim 1, characterized in that: All fixing brackets are triangular fixing brackets.