A performance testing device for radio frequency cable assemblies

Abstract

The utility model discloses a kind of performance detection devices for radio frequency cable assembly, including fixed base, the upper side of the fixed base one end is fixedly connected with lower shielding box, the upper side of the lower shielding box is provided with upper shielding box, the inside both ends of the lower shielding box and upper shielding box are correspondingly provided with shielding baffle, the inside both ends of the lower shielding box and upper shielding box are correspondingly fixedly embedded with metal feed slot in middle part of one end. The utility model is provided with two shielding baffle in upper and lower shielding box, can form three chambers after folding, cooperate with the radiation response probe and speed sensor of corresponding arrangement, can form detection space and a partition shielding space, in the case where cable continues to advance, console detects the time point data of radiation leakage by the speed of cable and two detection spaces, judges the accurate position of leakage point.

Description

Technical Field

[0001] This utility model relates to the field of cable testing technology, and in particular to a performance testing device for radio frequency cable assemblies. Background Technology

[0002] Radio frequency (RF) cables generally consist of a cable core, an insulation layer, and a shielding layer. The shielding layer is made of silver-plated copper tape wrapped around and braided with silver-plated copper wire. During installation and use, the cable shielding layer may be damaged due to operations such as cable chains, dragging, bundling, and bending. Once the cable shielding layer is damaged, electromagnetic leakage will occur, causing electromagnetic interference to other RF components in the same system. Therefore, it is necessary to detect electromagnetic leakage. Currently, there are two commonly used methods for testing electromagnetic leakage: the triaxial method and the mixed-phase chamber method. However, these two methods can only test the electromagnetic leakage of the entire RF cable assembly and cannot accurately locate the specific location of electromagnetic leakage within the entire RF cable assembly.

[0003] The prior art utility model patent with application number CN202222338396.3 discloses an electromagnetic leakage location device for radio frequency cable assemblies, specifically including an isolation box, a handle, and a gaussmeter. It can perform segmented detection by holding the isolation box. Although it can determine the leakage location of the cable, this technology requires the cable to be fixed in the middle of the isolation box during detection. During segmented detection, each segment requires the isolation box to be opened and closed and fixed. The detection process is cumbersome, and the minimum positioning accuracy corresponds to the length of the isolation box. It is not suitable for detection work in production and has room for further improvement. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a performance testing device for radio frequency cable assemblies, thereby solving the above-mentioned problem.

[0005] To achieve the above objectives, a performance testing device for radio frequency cable assemblies is provided, comprising a fixed base, a lower shielding box fixedly connected to one upper end of the fixed base, an upper shielding box disposed directly above the lower shielding box, shielding partitions disposed at corresponding positions at both ends of the lower and upper shielding boxes, metal feed grooves fixedly embedded at corresponding positions at one end of the lower and upper shielding boxes, metal discharge grooves fixedly connected and embedded at the middle of the ends of the lower and upper shielding boxes away from the metal feed grooves, shielding covers fixedly connected at the middle positions at both ends of the upper shielding box corresponding to the metal feed grooves and metal discharge grooves, guide frames fixedly connected at both ends of the lower shielding box inside the shielding covers, two guide wheels rotatably connected to each of the two guide frames, and side baffles fixedly connected at both ends of the lower shielding box on both sides outside the shielding covers.

[0006] A control console is fixedly connected to the upper end of the fixed base near the metal feed chute. Radiation induction probes are installed inside both ends of the lower and upper shielding boxes. A speed sensor is installed in the lower middle of the inner side of the lower shielding box. A laser marking machine is installed in the middle of the upper end of the fixed base near the metal discharge chute.

[0007] According to the performance testing device for radio frequency cable assemblies, the two metal feed troughs and the two metal discharge troughs are each provided with a semi-circular opening in the middle of their opposite sides.

[0008] According to the performance testing device for radio frequency cable assemblies, a flange is provided at the upper inner edge of the lower shielding box, and a mating groove corresponding to the flange is provided at the lower inner edge of the upper shielding box.

[0009] According to the performance testing device for radio frequency cable assemblies, both ends of the upper middle part of the upper shielding box are fixedly connected to limit sliding rods. The ends of the two limit sliding rods away from the upper shielding box are slidably connected to a support frame. The two limit sliding rods are both limited and sleeved with return springs at the upper position of the support frame. The upper middle part of the support frame is fixedly connected to a lifting hydraulic cylinder, and the hydraulic rod of the lifting hydraulic cylinder passes through the support frame and is fixedly connected to the center of the upper shielding box.

[0010] According to the performance testing device for an RF cable assembly, the bottom of the support frame is fixedly connected to the upper side of the fixed base away from the control console.

[0011] According to the performance testing device for radio frequency cable assemblies, the two guide wheels of the guide frame are respectively located below the end away from the lower shielding box and above the end close to the lower shielding box.

[0012] According to the performance testing device for radio frequency cable assemblies, the lifting hydraulic cylinder, speed sensor, radiation sensing probe, and laser marking machine are all electrically connected to the control console.

[0013] The above solution has at least one of the following beneficial effects:

[0014] 1. The upper and lower shielding boxes of this utility model are each equipped with two shielding partitions, which can form three chambers when closed. With the corresponding radiation induction probes and speed sensors, a detection space and a partitioned shielding space can be formed. When the cable continues to move forward, the control console determines the precise location of the leak by measuring the speed of the cable and the time point data of the radiation leakage detected in the two detection spaces. Then, the location of the leak is marked by a laser marking machine, which facilitates subsequent processing and enhances the practicality of the device.

[0015] 2. By setting a guide frame at the inlet and outlet of the lower shielding box, and in conjunction with the shielding cover of the upper shielding box, this utility model can reduce electromagnetic radiation interference at the inlet and outlet positions while ensuring continuous material feeding and discharging of the cable by changing the cable path, thereby enhancing the practicality of the device.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a left-side perspective view of a performance testing device for radio frequency cable assemblies according to the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the right side of a performance testing device for radio frequency cable assemblies according to the present invention;

[0020] Figure 3 This is a front structural diagram of a performance testing device for radio frequency cable assemblies according to the present invention;

[0021] Figure 4 This is a schematic diagram of the discharge of a performance testing device for radio frequency cable assemblies according to the present invention.

[0022] Legend:

[0023] 1. Fixed base; 2. Lower shielding box; 3. Upper shielding box; 4. Support frame; 5. Lifting hydraulic cylinder; 6. Limiting slide bar; 7. Return spring; 8. Shielding partition; 9. Metal feed chute; 10. Metal discharge chute; 11. Shielding cover; 12. Side baffle; 13. Guide frame; 14. Guide wheel; 15. Speed ​​sensor; 16. Radiation induction probe; 17. Control console; 18. Laser marking machine. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. Preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model. The drawings are all in a very simplified form and use non-precise proportions. They are only used to help to explain the embodiments of the present utility model in a convenient and clear way, and should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4This utility model provides a performance testing device for radio frequency cable assemblies, including a fixed base 1, a lower shielding box 2 fixedly connected to one upper end of the fixed base 1, an upper shielding box 3 disposed directly above the lower shielding box 2, and limit sliding rods 6 fixedly connected to both ends of the upper middle part of the upper shielding box 3. A support frame 4 is slidably connected to the ends of the two limit sliding rods 6 away from the upper shielding box 3. The bottom of the support frame 4 is fixedly connected to the upper part of the fixed base 1 away from the control console 17. A return spring 7 is fitted to the two limit sliding rods 6 at the upper position of the support frame 4. A lifting hydraulic cylinder 5 is fixedly connected to the upper middle part of the support frame 4, and the hydraulic rod of the lifting hydraulic cylinder 5 passes through the support frame 4 and is fixedly connected to the center of the upper shielding box 3. The upper shielding box 3 can be lifted and opened / closed by the lifting hydraulic cylinder 5.

[0026] A flange is provided on the upper inner edge of the lower shielding box 2, and a corresponding fitting groove is provided on the lower inner edge of the upper shielding box 3. After the lower shielding box 2 and the upper shielding box 3 are closed together, electromagnetic shielding can be better achieved through fitting. Shielding partitions 8 are provided at corresponding positions at both ends of the lower shielding box 2 and the upper shielding box 3. After closing, the entire box can form two detection spaces and one isolation shielding space. Metal feed grooves 9 are fixedly embedded at corresponding positions at one end of the lower shielding box 2 and the upper shielding box 3. Metal discharge grooves 10 are fixedly connected to the middle of the end of the lower shielding box 2 and the upper shielding box 3 away from the metal feed grooves 9. Semi-circular slots are opened in the middle of the two metal feed grooves 9 and the two metal discharge grooves 10 on opposite sides. After they cooperate with each other, they are used to form metal feed inlets and discharge outlets to reflect and absorb external electromagnetic radiation.

[0027] The upper shielding box 3 has shielding covers 11 fixedly connected to the middle of both ends of the upper shielding box 3 at positions corresponding to the metal feed trough 9 and the metal discharge trough 10. The lower shielding box 2 has guide frames 13 fixedly connected to the inner side of the shielding covers 11 at both ends of the lower shielding box 2. Two guide wheels 14 are rotatably connected to each of the two guide frames 13. The two guide wheels 14 of the guide frame 13 are respectively located below the end away from the lower shielding box 2 and above the end close to the lower shielding box 2. Side baffles 12 are fixedly connected to both ends of the lower shielding box 2 on the outer sides of the shielding covers 11. By setting guide frames 13 at the inlet and outlet of the lower shielding box 2, and cooperating with the shielding covers 11 set at the corresponding positions of the upper shielding box 3, the electromagnetic radiation from the outside can be prevented from directly entering the detection space along the inlet and outlet by changing the cable path. This reduces the electromagnetic radiation interference at the inlet and outlet positions while ensuring the continuous feeding and discharging of the cable.

[0028] A control console 17 is fixedly connected to the upper end of the fixed base 1 near the metal feed chute 9. Radiation sensing probes 16 are installed inside both ends of the lower shielding box 2 and the upper shielding box 3. A speed sensor 15 is installed in the lower middle of the inner side of the lower shielding box 2. A laser marking machine 18 is installed in the middle of the upper end of the fixed base 1 near the metal discharge chute 10. The lifting hydraulic cylinder 5, speed sensor 15, radiation sensing probe 16 and laser marking machine 18 are all electrically connected to the control console 17. The upper and lower shielding boxes are each equipped with two shielding partitions 8, which can form three chambers when closed. With the corresponding radiation sensing probes 16 and speed sensors 15, a detection space and a partition shielding space can be formed. When the cable continues to advance, the control console 17 determines the precise location of the leak by measuring the speed of the cable and the time point data of the radiation leakage detected in the two detection spaces. Then, the laser marking machine 18 marks the location of the leak for subsequent processing.

[0029] Working principle: This utility model is mainly used to further locate cables that have been detected to have leaks but whose leak points are uncertain. In use, loads are connected to both ends of the cable to generate radio frequency signals inside the cable. The cable then continuously passes through two detection spaces and one partition shielding space inside the shielded box. As the cable continues to move forward, the control console 17 can use corresponding sensors to detect the cable speed and the time point data of radiation leakage detected in the two detection spaces. Based on the length of the partition shielding space, the precise location of the leak point is determined. Then, the leak point location is marked by a laser marking machine 18. The error can not exceed ten centimeters, reducing cable loss.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A performance testing device for radio frequency cable assemblies, comprising a fixed base (1), characterized in that: A lower shielding box (2) is fixedly connected to one end of the fixed base (1). An upper shielding box (3) is provided directly above the lower shielding box (2). Shielding partitions (8) are provided at corresponding positions at both ends of the lower shielding box (2) and the upper shielding box (3). Metal feed grooves (9) are fixedly embedded at corresponding positions at the middle of one end of the lower shielding box (2) and the upper shielding box (3). Fixed inserts are fixedly connected to the middle of the end of the lower shielding box (2) and the upper shielding box (3) away from the metal feed grooves (9). The upper shielding box (3) is equipped with a metal discharge trough (10). At the middle of both ends of the upper shielding box (3) and at the corresponding positions of the metal feed trough (9) and the metal discharge trough (10), shielding covers (11) are fixedly connected. At both ends of the lower shielding box (2) at the positions inside the shielding covers (11), guide frames (13) are fixedly connected. Two guide wheels (14) are rotatably connected to each of the two guide frames (13). At both ends of the lower shielding box (2) at the positions on the outer sides of the shielding covers (11), side baffles (12) are fixedly connected. A control console (17) is fixedly connected to one end of the fixed base (1) near the metal feed trough (9). Radiation induction probes (16) are installed inside both ends of the lower shielding box (2) and the upper shielding box (3). A speed sensor (15) is installed in the lower middle part of the inner side of the lower shielding box (2). A laser marking machine (18) is installed in the middle part of one end of the fixed base (1) near the metal discharge trough (10).

2. The performance testing device for radio frequency cable assemblies according to claim 1, characterized in that, The two metal feed troughs (9) and the two metal discharge troughs (10) each have a semi-circular opening in the middle of their opposite sides.

3. The performance testing device for radio frequency cable assemblies according to claim 1, characterized in that, The lower shielding box (2) has a flange at its upper inner edge, and the upper shielding box (3) has a fitting groove at its lower inner edge corresponding to the flange.

4. The performance testing device for radio frequency cable assemblies according to claim 1, characterized in that, The upper shielding box (3) has two fixedly connected limit slide rods (6) at both ends of its upper middle part. The two limit slide rods (6) are slidably connected to a support frame (4) at the ends away from the upper shielding box (3). The two limit slide rods (6) are both fitted with return springs (7) at the upper position of the support frame (4). The upper middle part of the support frame (4) is fixedly connected to a lifting hydraulic cylinder (5), and the hydraulic rod of the lifting hydraulic cylinder (5) passes through the support frame (4) and is fixedly connected to the center of the upper shielding box (3).

5. The performance testing device for radio frequency cable assemblies according to claim 4, characterized in that, The bottom of the support frame (4) is fixedly connected to the fixed base (1) on the side away from the control console (17).

6. The performance testing device for radio frequency cable assemblies according to claim 1, characterized in that, The two guide wheels (14) of the guide frame (13) are respectively located below the end away from the lower shield box (2) and above the end close to the lower shield box (2).

7. The performance testing device for radio frequency cable assemblies according to claim 4, characterized in that, The lifting hydraulic cylinder (5), speed sensor (15), radiation sensor (16) and laser marking machine (18) are all electrically connected to the control console (17).

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