Airborne electromagnetic shielding curtain service life test device
By designing the onboard electromagnetic shielded curtain life test device, and using stepper motors and pulley sets to achieve automated tests, the problems of long test time and inaccurate angles in the prior art are solved, and efficient and reliable test results are achieved.
Patent Information
- Application Number
- CN202421580039.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-05
AI Technical Summary
In the prior art, the life test of the electromagnetic shielded curtain of aircraft requires manual operation, the test time is long, and the angle cannot be accurately fixed, resulting in low test efficiency and inaccurate results.
An onboard electromagnetic shielded curtain life test device is designed, using upper curtain test device and lower curtain test device, and automated test using stepper motor and pulley set, which can be automatically adjusted and tested in various installation states.
The time of the electromagnetic shielded curtain life test is greatly shortened, and the test time is saved by more than 60%, which improves the reliability and accuracy of the test, while reducing the cost and maintenance difficulty of the device.
Smart Images
Figure CN222748260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of airborne electromagnetic shielding curtain testing, in particular to an airborne electromagnetic shielding curtain life testing device. Background Art
[0002] In the limited space of the aircraft system, the density of electronic equipment has increased dramatically, the transmission power of the equipment has become larger and larger, and the receiver sensitivity has become higher and higher. In order to prevent many electronic devices in the same electromagnetic environment from interfering with each other and to operate normally, the electronic equipment needs to have good electromagnetic compatibility. Shielding is one of the important measures to improve the electromagnetic compatibility of electronic equipment, which can effectively suppress various electromagnetic interferences propagating through space. The chassis is the last line of defense against radiated electromagnetic interference, and its shielding design often determines whether the equipment meets the electromagnetic compatibility requirements.
[0003] In the past, the ground life test of the electromagnetic shielding curtain of the aircraft was conducted manually. The curtain has an automatic rolling back shaft. During the ground test, the curtain is pulled out and then pulled out again after it is retracted. The electromagnetic shielding curtain needs to be tested in 6 installation states: up and down installation, left and right tilted 15°, and in total. Not only does the test time take a long time, but the angle cannot be accurately fixed during the tilt test, and the work intensity of the test personnel is high. Utility Model Content
[0004] The purpose of the utility model is to provide an airborne electromagnetic shielding curtain life test device to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: an airborne electromagnetic shielding curtain life test device, including an upper curtain test device and a lower curtain test device;
[0005] The upper curtain test device comprises a first clamp body, a first plug plate is horizontally attached to the bottom of the front end of the first clamp body, a first pulley block is plugged into the front end of the first plug plate, a first stepper motor attached to the first clamp body is disposed at one end of the first plug plate, and an upper curtain clamping structure is horizontally disposed at the top of the front end of the first clamp body;
[0006] The lower curtain test device includes a second clamping body, a lower curtain clamping structure is provided at the bottom of the front end of the second clamping body, a second stepping motor connected to the second clamping body is provided on one side of the lower curtain clamping structure, a second plugging plate is attached to the top of the front end of the second clamping body, and a second pulley block is plugged into the front end of the second plugging plate.
[0007] Further preferably, the first clamp body and the second clamp body have the same composition structure;
[0008] The first clamp body is composed of a bottom plate, a panel and two side plates. Side plates are arranged above both sides of the bottom plate. A panel connected to the front ends of the side plates is arranged above the front end edge of the bottom plate.
[0009] Further preferably, a plurality of plug holes are formed on the surfaces of the first plug board and the second plug board at equal intervals.
[0010] Further preferably, the first pulley block consists of an insert plate and two fixed pulleys, the insert plate is a bent structure, and the fixed pulleys are respectively located at both sides of the front end of the insert plate.
[0011] Further preferably, the second pulley block consists of two plug plates and three fixed pulleys, the plug plates are in a bent structure, two of the fixed pulleys are located on both sides of the front end of the plug plate on one side, and the other fixed pulley is located at the front end of the plug plate on the other side.
[0012] Further preferably, the upper curtain clamping structure and the lower curtain clamping structure have the same composition structure.
[0013] Further preferably, the upper curtain clamping structure is composed of a slide rail, a positioning block, and a movable block, wherein one end of the slide rail away from the first stepper motor is fixedly connected to the positioning block, and the other end of the slide rail is slidably connected to the movable block.
[0014] Further preferably, the internal dimension structure of the slide rail is consistent with the rear end dimension structure of the movable block.
[0015] Further preferably, the first stepper motor and the second stepper motor both adopt a 57 stepper motor system.
[0016] Further preferably, the 57 stepper motor system includes a stepper motor, a driver, a power supply, a controller, a power supply box, a motor mounting seat, and a roller.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] In this utility model, the time required for the electromagnetic shielding curtain life test can be greatly shortened. Compared with the manually operated test, it can save more than 60% of the test time, and no personnel are required to operate the whole process, which ensures that the test process is more reliable and the test results are more in line with the test requirements. Except for the mounting plate, standard shelf products are selected, which have high reliability, and at the same time reduce the cost of the whole set of equipment, which is convenient for later maintenance. Through the stepper motor controller, the number of tests and the test stroke can be easily adjusted to facilitate the test requirements of various models of products. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a front view structural diagram of the first embodiment of the utility model;
[0020] Figure 2 This is a schematic diagram of the structure after front-view adjustment in Embodiment 1 of the present utility model;
[0021] Figure 3 It is a side view structural schematic diagram of the first embodiment of the utility model;
[0022] Figure 4 This is a schematic diagram of the middle position test in the first embodiment of the present utility model;
[0023] Figure 5 This is a schematic diagram of a test at 15° on the left and right sides in Embodiment 1 of the present utility model;
[0024] Figure 6 This is a front view structural diagram of the second embodiment of the present utility model;
[0025] Figure 7 This is a schematic diagram of the structure after formal adjustment in Embodiment 2 of the present utility model;
[0026] Figure 8 It is a side view structural diagram of the second embodiment of the utility model;
[0027] Fig. 9 This is a schematic diagram of a middle position test in Embodiment 2 of the present utility model;
[0028] Fig.10 This is a schematic diagram of a test at 15° on the left and right sides in the second embodiment of the present invention.
[0029] In the figure: 1. upper curtain test device; 101. first clamping body; 102. first plug board; 103. first pulley block; 104. first stepper motor; 105. upper curtain clamping structure; 2. lower curtain test device; 201. second clamping body; 202. lower curtain clamping structure; 203. second stepper motor; 204. second plug board; 205. second pulley block. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.
[0031] Example 1: Please refer to Figures 1 to 5 , the present invention provides a technical solution: an airborne electromagnetic shielding curtain life test device, comprising an upper curtain test device 1;
[0032] The upper curtain test device 1 includes a first clamp body 101, a first plug plate 102 is horizontally attached to the bottom of the front end of the first clamp body 101, a first pulley set 103 is plugged into the front end of the first plug plate 102, a first stepper motor 104 attached to the first clamp body 101 is provided at one end of the first plug plate 102, and an upper curtain clamping structure 105 is horizontally provided at the top of the front end of the first clamp body 101.
[0033] In this embodiment, Figure 1 and Figure 3 As shown, the first clamp body 101 is composed of a bottom plate, a panel and two side plates. Side plates are provided above both sides of the bottom plate, and a panel connected to the front ends of the side plates is provided above the front end edge of the bottom plate.
[0034] In this embodiment, Figure 1 As shown, a plurality of plug holes are equidistantly formed on the surface of the first plug board 102 .
[0035] In this embodiment, Figure 1 , Figure 4 and Figure 5 As shown, the first pulley group 103 is composed of a plug plate and two fixed pulleys. The plug plate is a bent structure, and the fixed pulleys are respectively located at both sides of the front end of the plug plate.
[0036] In this embodiment, Figure 1 and Figure 2 As shown, the upper curtain clamping structure 105 is composed of a slide rail, a positioning block, and a movable block. The end of the slide rail away from the first stepper motor 104 is fixedly connected to the positioning block, and the other end of the slide rail is slidably connected to the movable block.
[0037] In this embodiment, the first stepper motor 104 adopts a 57 stepper motor system;
[0038] 57 The stepper motor system includes a stepper motor, a driver, a power supply, a controller, a power supply box, a motor mounting base, and a roller.
[0039] The upper curtain is installed on the top of the back of the clamp body, the mounting plate is installed on the lower part of the back of the clamp body through screws, and the two pulley groups are installed on the mounting plate through L-shaped brackets. One end of the nylon line is fastened to the hook on the curtain cloth and the other end is fastened to the weight and passes through the fixed pulley in the middle. One end of the other rope is fastened to the weight, and the other end is connected to the reel on the stepper motor shaft and passes through the fixed pulley in the middle. The stepper motor is connected to the motor mounting seat, and the mounting seat is installed and fixed to the side of the clamp body.
[0040] like Figure 4 and Figure 5 As shown, the usage principle is as follows:
[0041] The 57 stepper motor is controlled by the controller to realize automatic uniform reciprocating motion. The controller can record the number of reciprocating times and adjust the one-way motion distance to 480mm. When the motor reverses, the weight drives the curtain cloth to move down to the specified distance, and the weight touches the ground, and the curtain cloth stops moving. When the motor rotates forward, the motor pulls the weight upward, and the curtain cloth automatically rewinds into place when the weight gravity is lost. Pulling out and retracting the curtain cloth are performed in three positions, as shown in the figure below: the center position, and the 15° position on the left and right
[0042] Example 2: Please refer to Figures 6 to 10 ,The present invention provides a technical solution: an airborne electromagnetic shielding curtain life test device, comprising a lower curtain test device 2;
[0043] The lower curtain test device 2 includes a second clamping body 201, a lower curtain clamping structure 202 is provided at the bottom of the front end of the second clamping body 201, a second stepping motor 203 connected to the second clamping body 201 is provided on one side of the lower curtain clamping structure 202, a second plug plate 204 is attached to the top of the front end of the second clamping body 201, and a second pulley set 205 is plugged into the front end of the second plug plate 204.
[0044] In this embodiment, Figure 6 and Figure 8 As shown, the second clamp body 201 is composed of a bottom plate, a panel and two side plates. Side plates are provided above both sides of the bottom plate, and a panel connected to the front ends of the side plates is provided above the front edge of the bottom plate.
[0045] In this embodiment, Figure 6 and Figure 7 As shown, a plurality of plug holes are equidistantly formed on the surface of the second plug board 204 .
[0046] In this embodiment, Figure 6 , Fig. 9 and Fig.10 As shown, the second pulley block 205 is composed of two plug-in plates and three fixed pulleys. The plug-in plates are bent in structure, wherein two fixed pulleys are located at both sides of the front end of the plug-in plate on one side, and another fixed pulley is located at the front end of the plug-in plate on the other side.
[0047] In this embodiment, Figure 7 As shown, the lower curtain clamping structure 202 is composed of a slide rail, a positioning block, and a movable block. One end of the slide rail away from the second stepper motor 203 is fixedly connected to the positioning block, and the other end of the slide rail is slidably connected to the movable block.
[0048] In this embodiment, the second stepper motor 203 adopts a 57 stepper motor system;
[0049] 57 The stepper motor system includes a stepper motor, a driver, a power supply, a controller, a power supply box, a motor mounting base, and a roller.
[0050] The curtain is installed at the lower end of the back using a triangular clamp, a mounting plate is installed at the upper end, three pulley assemblies are installed on the mounting plate, a stepper motor is assembled on a motor mounting seat, the motor mounting seat is mounted on the side of the clamp, and a power supply, a controller, and a driver are assembled in a power supply box.
[0051] like Fig. 9 and Fig.10 As shown, the usage principle is as follows:
[0052] A nylon wire is tied to the hook on the curtain cloth and the other end is tied to the weight in the middle through two fixed pulleys. Another nylon wire is tied to the weight at one end and the motor shaft drum at the other end; the controller controls the stepper motor to perform automatic reciprocating motion at a fixed distance and records the number of reciprocating times. The single-stroke stroke is 560mm. When the motor pulls the weight upward, the curtain cloth loses the weight and automatically retracts. When the motor reverses, the curtain cloth drops to the designated position under the weight of the weight and stops moving downward until the weight touches the ground; there are three positions for pulling the curtain cloth to be pulled out and retracted, as shown in the center of the figure below and 15° on each side.
[0053] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. An airborne electromagnetic shielding curtain life test device, comprising an upper curtain test device (1) and a lower curtain test device (2), characterized in that: The upper curtain test device (1) comprises a first clamp body (101), a first plug plate (102) is horizontally attached to the bottom of the front end of the first clamp body (101), a first pulley block (103) is plugged into the front end of the first plug plate (102), a first stepper motor (104) attached to the first clamp body (101) is provided at one end of the first plug plate (102), and an upper curtain clamping structure (105) is horizontally provided at the top of the front end of the first clamp body (101); The lower curtain test device (2) comprises a second clamping body (201), a lower curtain clamping structure (202) is provided at the bottom of the front end of the second clamping body (201), a second stepping motor (203) connected to the second clamping body (201) is provided on one side of the lower curtain clamping structure (202), a second plugging plate (204) is attached to the top of the front end of the second clamping body (201), and a second pulley block (205) is plugged into the front end of the second plugging plate (204).
2. The airborne electromagnetic shielding curtain life test device according to claim 1, characterized in that: The first clamp body (101) and the second clamp body (201) have the same composition structure; The first clamp body (101) is composed of a bottom plate, a panel and two side plates. Side plates are provided above both sides of the bottom plate. A panel connected to the front ends of the side plates is provided above the front edge of the bottom plate.
3. The airborne electromagnetic shielding curtain life test device according to claim 1, characterized in that: The surfaces of the first plug board (102) and the second plug board (204) are both provided with a plurality of plug holes at equal intervals.
4. The airborne electromagnetic shielding curtain life test device according to claim 1, characterized in that: The first pulley group (103) consists of a plug plate and two fixed pulleys, the plug plate is in a bent structure, and the fixed pulleys are respectively located at two sides of the front end of the plug plate.
5. The airborne electromagnetic shielding curtain life test device according to claim 1, characterized in that: The second pulley group (205) consists of two plug-in plates and three fixed pulleys, wherein the plug-in plates are in a bent structure, wherein two of the fixed pulleys are located at both sides of the front end of the plug-in plate on one side, and the other fixed pulley is located at the front end of the plug-in plate on the other side.
6. The airborne electromagnetic shielding curtain life test device according to claim 1, characterized in that: The upper curtain clamping structure (105) and the lower curtain clamping structure (202) have the same composition structure.
7. The airborne electromagnetic shielding curtain life test device according to claim 6, characterized in that: The upper curtain clamping structure (105) is composed of a slide rail, a positioning block, and a movable block. One end of the slide rail away from the first stepper motor (104) is fixedly connected to the positioning block, and the other end of the slide rail is slidably connected to the movable block.
8. The airborne electromagnetic shielding curtain life test device according to claim 7, characterized in that: The inner dimension structure of the slide rail is consistent with the rear end dimension structure of the movable block.
9. The airborne electromagnetic shielding curtain life test device according to claim 1, characterized in that: The first stepper motor (104) and the second stepper motor (203) both adopt a 57 stepper motor system.
10. The airborne electromagnetic shielding curtain life test device according to claim 9, characterized in that: The stepper motor system 57 comprises a stepper motor, a driver, a power supply, a controller, a power supply box, a motor mounting seat and a roller.