Adjusting device for EMC (Electro Magnetic Compatibility) test

Abstract

The invention belongs to the technical field of EMC testing, and particularly relates to an adjusting device for EMC testing, which comprises an EMC testing table, the top of the EMC testing table is provided with a circular groove, the center of the circular groove is rotatably provided with an angle adjusting shaft, and the top end of the angle adjusting shaft extends out of the circular groove and is provided with a rectangular slot. A limiting inserting frame is slidably connected into the rectangular inserting groove, the top end of the limiting inserting frame extends upwards and is fixedly connected with an equipment positioning plate, and the equipment positioning plate is used for fixing equipment to be tested. In the invention, the direction can be adjusted before testing, a servo motor I is started and drives a driving gear to rotate, and under the meshing transmission of the driving gear and an adjusting gear ring, an angle adjusting shaft drives a limiting insertion frame to rotate, so that the orientation of an equipment positioning plate is moved to change the direction of to-be-tested equipment; and due to the variability of the mounting position of the to-be-tested equipment by the test equipment positioning mechanism, the position of the to-be-tested equipment can be adjusted more comprehensively, and the range is wider.

Description

Technical Field

[0001] The invention relates to an EMC testing device, in particular to an adjusting device for EMC testing. Background Art

[0002] EMC testing, also known as electromagnetic compatibility, refers to the comprehensive assessment of the interference size and anti-interference ability of electronic products in electromagnetic fields. It is one of the most important indicators of product quality. The measurement of electromagnetic compatibility consists of a test site and test instruments. The purpose of EMC testing is to detect the impact of electromagnetic radiation generated by electrical products on the human body, public power grids, and other normally working electrical products. However, in the prior art, the test piece needs to be fixed by a fixture during the test. Although some common fixtures can better limit and fix the test piece, the operating table of the fixture is generally fixed directly to the test device by bolts, and thus this type of operating table is not convenient to adjust at the use angle according to the user's needs or the needs of the device under test, which makes it inconvenient to use flexibly during testing. Summary of the invention

[0003] The main purpose of the present disclosure is to provide an adjustment device for EMC testing to effectively solve the problems raised by the inventor in the above background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] An adjustment device for EMC testing, comprising an EMC test bench, wherein a circular groove is provided on the top of the EMC test bench, and an angle adjustment shaft is rotatably installed at the center of the circular groove, the top end of the angle adjustment shaft extends out of the circular groove and is provided with a rectangular slot, and a limited position bracket is slidably connected in the rectangular slot, the top end of the limited position bracket extends upward and is fixedly connected with a device positioning plate, and the device positioning plate is used to fix a device to be tested;

[0006] An annular inner guide rail, the annular inner guide rail is fixedly installed in the circular groove, and a first annular telescopic groove is opened on the top of the annular inner guide rail, a lifting rail 1 is slidably installed in the first annular telescopic groove, and the top of the lifting rail 1 extends out of the first annular telescopic groove;

[0007] An annular outer guide rail, the annular outer guide rail is fixedly installed in the circular groove, and a second annular telescopic groove is provided on the top of the annular outer guide rail, a lifting rail 2 is slidably installed in the second annular telescopic groove, the top of the lifting rail 2 extends out of the second annular telescopic groove, and the tops of the lifting rail 2 and the lifting rail 1 are both provided with a limiting ring opening, and the bottom of the equipment positioning plate is movably connected in the limiting ring opening;

[0008] A rotating mechanism, the rotating mechanism is used to drive the angle adjustment shaft to rotate;

[0009] A lifting mechanism, the lifting mechanism is used to drive the lifting rail 1 and the lifting rail 2 to move up and down;

[0010] A test equipment positioning mechanism, which is installed on the equipment positioning plate and is used to fix the equipment to be tested;

[0011] The table support legs are fixedly mounted on the bottom of the EMC test table.

[0012] Preferably, two supporting sliding mechanisms are installed at the bottom of the equipment positioning plate, and the supporting sliding mechanisms include a mounting frame and a load-bearing pulley. The mounting frame is fixedly installed at the bottom of the equipment positioning plate, and the load-bearing pulley is rotatably installed at the lower end of the mounting frame, and the two load-bearing pulleys are respectively slidably connected to the limiting ring openings on the lifting rail one and the lifting rail two.

[0013] Preferably, the rotating mechanism includes an adjusting ring gear, a servo motor 1 and a driving gear, the adjusting ring gear is fixedly mounted on the surface of the angle adjustment shaft, the servo motor 1 is fixedly mounted on the bottom of the circular groove, and the output end of the servo motor 1 is fixedly connected to the driving gear, and the driving gear is meshed with the adjusting ring gear.

[0014] Preferably, the lifting mechanism includes a side fixing seat, a Z-axis screw and a threaded engagement seat, both sides of the EMC test bench are fixedly installed with upper and lower side fixing seats, and a Z-axis screw is rotatably installed between the two side fixing seats on the same side, the two Z-axis screws are threadedly installed with threaded engagement seats, and the sides of the threaded engagement seats are fixedly connected with a driving rod, a movable opening is opened on the side of the EMC test bench, and the sides of the annular inner guide rail and the annular outer guide rail are opened with sliding openings, the driving rod is slidably connected in the movable opening and the sliding opening, and the driving rod is fixedly penetrated through the second lifting rail and fixedly connected to the first lifting rail, a servo motor two is fixedly installed on the table support leg, and the output end of the servo motor two is fixedly connected to one of the Z-axis screws, sprockets are fixedly installed on the two Z-axis screws, and the two sprockets are connected by a transmission chain.

[0015] Preferably, the test equipment positioning mechanism includes a slide groove, a limiting slide column, a thrust block and a clamping positioning plate, the top of the equipment positioning plate is provided with four slide grooves distributed in a cross shape, a limiting slide column is fixedly installed in each of the slide grooves, the thrust block is slidably installed on the limiting slide column and is slidably connected in the slide groove, the clamping positioning plate is fixedly installed on the top of the thrust block, and the clamping positioning plate is located outside the slide groove, a mounting block is fixedly installed on the clamping positioning plate, and a rotating shaft is rotatably installed on the mounting block, the bottom end of the rotating shaft extends into the slide groove and is fixedly installed with a traveling gear, a parallel rack parallel to the limiting slide column is fixedly installed in the slide groove, and the parallel rack passes through the through hole inside the thrust block, the traveling gear is meshed with the parallel rack, and a quick-shift handle is fixedly installed on the top of the rotating shaft.

[0016] Preferably, the limiting bracket is adapted to the rectangular slot.

[0017] Preferably, the load-bearing pulley rolls on the inner bottom wall of the limiting ring.

[0018] In view of this, compared with the prior art, the beneficial effects of the present invention are:

[0019] (i) In the present application, the device to be tested is placed on the device positioning plate, and the quick-shift handles are rotated to make the travel gear rotate and move along the parallel racks, thereby driving the propulsion blocks to gather and move, that is, the clamping positioning plates gather and move to fix the device to be tested, so as to avoid looseness during the test and affect the test, and the devices to be tested of different sizes can be fixed.

[0020] (ii) In the present application, the position can also be adjusted before the test. Once the servo motor is turned on, it drives the driving gear to rotate. Under the meshing transmission between the servo motor and the adjusting gear ring, the angle adjustment shaft drives the limit bracket to rotate, thereby moving the orientation of the equipment positioning plate to change the position of the equipment to be tested. In addition, due to the variability of the installation position of the equipment to be tested by the positioning mechanism of the test equipment, the adjustment of the position of the equipment to be tested is more comprehensive and has a wider range.

[0021] (III) In the present application, servo motor 2 is turned on to drive a Z-axis screw rod to rotate. Under the transmission of the sprocket and the transmission chain, the two Z-axis screw rods rotate, and then the threaded engagement seat drives the drive rod to move, so that the lifting rail 1 and the lifting rail 2 can move up and down, thereby driving the limit bracket and the rectangular slot to move up and down, and will not affect the rotation of the limit bracket driven by the angle adjustment shaft, and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a cross-sectional view of the structure of the regulating device for EMC testing provided by the present invention;

[0023] Figure 2 Shown Figure 1 The enlarged schematic diagram of point A in the middle;

[0024] Figure 3 The figure is a top view of the structure of the EMC test adjustment device provided by the present invention;

[0025] Figure 4 Shown Figure 1 Schematic diagram of the equipment positioning plate after it rises;

[0026] Figure 5 Shown Figure 4 Schematic diagram of the local structure in;

[0027] Figure 6 Shown is a top view of the connection between two sprockets and a transmission chain;

[0028] Figure 7 Shown Figure 3 Schematic diagram of the device positioning plate after rotation;

[0029] Figure 8 Shown Figure 7 Schematic diagram after removing the device positioning plate;

[0030] Fig. 9 Shown Figure 1 Schematic diagram of the local structure in;

[0031] Fig.10 Shown Figure 3 Schematic diagram of the local structure in.

[0032] icon:

[0033] 1-EMC test bench; 101-annular inner guide rail; 102-annular outer guide rail; 103-lifting rail 1; 104-lifting rail 2; 105-driving rod; 106-movable opening;

[0034] 2-angle adjustment shaft; 201-adjusting gear ring; 202-servo motor 1; 203-driving gear;

[0035] 3-Limiting rack;

[0036] 4-equipment positioning plate; 401-mounting frame; 402-load pulley;

[0037] 5-side fixing seat; 501-Z-axis screw rod; 502-thread engagement seat; 503-servo motor 2; 504-sprocket; 505-transmission chain;

[0038] 6-test equipment positioning mechanism; 601-slideway; 602-limiting slide column; 603-advance block; 604-clamping positioning plate; 605-mounting block; 606-travel gear; 607-parallel rack; 608-quick-shift handle;

[0039] 7-Stand support legs. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-10 , the present invention provides the following embodiments:

[0042] An adjustment device for EMC testing comprises an EMC test bench 1, a circular groove is provided on the top of the EMC test bench 1, and an angle adjustment shaft 2 is rotatably installed at the center of the circular groove, the top end of the angle adjustment shaft 2 extends out of the circular groove and is provided with a rectangular slot, and a limited position bracket 3 is slidably connected in the rectangular slot, the limited position bracket 3 is adapted to the rectangular slot, the top end of the limited position bracket 3 extends upward and is fixedly connected with a device positioning plate 4, and the device positioning plate 4 is used to fix the device to be tested;

[0043] An annular inner guide rail 101 is fixedly installed in the circular groove, and a first annular telescopic groove is provided at the top of the annular inner guide rail 101, a lifting rail 103 is slidably installed in the first annular telescopic groove, and the top of the lifting rail 103 extends out of the first annular telescopic groove;

[0044] The annular outer guide rail 102 is fixedly installed in the circular groove, and a second annular telescopic groove is provided at the top of the annular outer guide rail 102, and a second lifting rail 104 is slidably installed in the second annular telescopic groove, and the top of the second lifting rail 104 extends out of the second annular telescopic groove, and the tops of the second lifting rail 104 and the first lifting rail 103 are both provided with limited ring openings, and the bottom of the equipment positioning plate 4 is movably connected in the limited ring opening;

[0045] A rotating mechanism, which is used to drive the angle adjustment shaft 2 to rotate;

[0046] A lifting mechanism, the lifting mechanism is used to drive the lifting rail 103 and the lifting rail 2 104 to move up and down;

[0047] A test equipment positioning mechanism 6, which is mounted on the equipment positioning plate 4 and is used to fix the equipment to be tested;

[0048] The table support legs 7 are fixedly mounted on the bottom of the EMC test table 1 .

[0049] Specifically, two supporting sliding mechanisms are installed at the bottom of the equipment positioning plate 4, and the supporting sliding mechanisms include a mounting frame 401 and a load-bearing pulley 402. The mounting frame 401 is fixedly installed at the bottom of the equipment positioning plate 4, and the load-bearing pulley 402 is rotatably installed at the lower end of the mounting frame 401. The two load-bearing pulleys 402 are respectively slidably connected to the limiting rings on the lifting rail 1 103 and the lifting rail 2 104, and the load-bearing pulley 402 rolls on the inner bottom wall of the limiting ring.

[0050] Specifically, the rotating mechanism includes an adjusting ring gear 201, a servo motor 202 and a driving gear 203. The adjusting ring gear 201 is fixedly mounted on the surface of the angle adjustment shaft 2, the servo motor 202 is fixedly mounted at the bottom of the circular groove, and the output end of the servo motor 202 is fixedly connected to the driving gear 203, which meshes with the adjusting ring gear 201.

[0051] Specifically, the lifting mechanism includes a side fixing seat 5, a Z-axis screw rod 501 and a threaded engagement seat 502. The side fixing seats 5 distributed in the upper and lower positions are fixedly installed on both sides of the EMC test bench 1, and the Z-axis screw rod 501 is rotatably installed between the two side fixing seats 5 on the same side. The threaded engagement seats 502 are threadedly installed on the two Z-axis screw rods 501, and the side of the threaded engagement seat 502 is fixedly connected to the driving rod 105. The side of the EMC test bench 1 is provided with a movable opening 106, and the annular inner guide rail 101 and the annular inner guide rail 106 are provided. The sides of the outer guide rail 102 are provided with sliding openings, and the driving rod 105 is slidably connected in the movable opening 106 and the sliding opening, and the driving rod 105 is fixedly passed through the lifting rail 104 and is fixedly connected to the lifting rail 1 103. A servo motor 503 is fixedly installed on the table support leg 7, and the output end of the servo motor 503 is fixedly connected to one of the Z-axis screw rods 501. Sprockets 504 are fixedly installed on the two Z-axis screw rods 501, and the two sprockets 504 are connected through a transmission chain 505.

[0052] Specifically, the test equipment positioning mechanism 6 includes a slide groove 601, a limit slide column 602, a push block 603 and a clamping positioning plate 604. Four slide grooves 601 distributed in a cross shape are opened on the top of the equipment positioning plate 4. A limit slide column 602 is fixedly installed in each slide groove 601. The push block 603 is slidably installed on the limit slide column 602 and slidably connected in the slide groove 601. The clamping positioning plate 604 is fixedly installed on the top of the push block 603, and the clamping positioning plate 604 is positioned Outside the slide groove 601, a mounting block 605 is fixedly installed on the clamping positioning plate 604, and a rotating shaft is rotatably installed on the mounting block 605. The bottom end of the rotating shaft extends into the slide groove 601 and is fixedly installed with a traveling gear 606. A parallel rack 607 parallel to the limiting slide column 602 is fixedly installed in the slide groove 601, and the parallel rack 607 passes through the through hole inside the propulsion block 603. The traveling gear 606 is meshed with the parallel rack 607, and a quick-shift handle 608 is fixedly installed on the top of the rotating shaft.

[0053] The specific implementation of this embodiment is as follows: the device to be tested is placed on the device positioning plate 4, and each quick-moving handle 608 is rotated to make the travel gear 606 rotate and move along the parallel rack 607, thereby driving each propulsion block 603 to gather and move, that is, each clamping positioning plate 604 gathers and moves to fix the device to be tested, so as to avoid looseness during the test and affect the test, and the devices to be tested of different sizes can be fixed;

[0054] The orientation can also be adjusted before testing. The servo motor 202 is turned on and drives the driving gear 203 to rotate. Under the meshing transmission between the servo motor 202 and the adjusting gear ring 201, the angle adjustment shaft 2 drives the limiting bracket 3 to rotate, thereby moving the orientation of the device positioning plate 4 to change the orientation of the device to be tested. Due to the variability of the installation position of the device to be tested by the test device positioning mechanism 6, the adjustment of the position of the device to be tested is more comprehensive and has a wider range.

[0055] In addition, when the equipment positioning plate 4 rotates, the load-bearing pulley 402 slides in the limiting ring, which ensures the stability of the equipment positioning plate 4 on the one hand and enables it to rotate smoothly on the other hand;

[0056] Servo motor 2 503 is turned on, which drives a Z-axis screw rod 501 to rotate. Under the transmission of sprocket 504 and transmission chain 505, the two Z-axis screw rods 501 rotate, and then the threaded engagement seat 502 drives the driving rod 105 to move, so that the lifting rail 103 and the lifting rail 2 104 can move up and down, thereby driving the limit bracket 3 to move up and down in the rectangular slot, and will not affect the rotation of the limit bracket 3 driven by the angle adjustment shaft 2, and the use effect is better.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustment device for EMC testing, characterized in that: The EMC test bench (1) comprises an EMC test bench (1), wherein a circular groove is formed on the top of the EMC test bench (1), and an angle adjustment shaft (2) is rotatably mounted at the center of the circular groove, the top end of the angle adjustment shaft (2) extends out of the circular groove and is formed with a rectangular slot, and a limit plug-in frame (3) is slidably connected in the rectangular slot, the top end of the limit plug-in frame (3) extends upward and is fixedly connected to a device positioning plate (4), and the device positioning plate (4) is used to fix the device to be tested; An annular inner guide rail (101), the annular inner guide rail (101) is fixedly installed in the circular groove, and a first annular telescopic groove is opened at the top of the annular inner guide rail (101), a lifting rail (103) is slidably installed in the first annular telescopic groove, and the top of the lifting rail (103) extends out of the first annular telescopic groove; An annular outer guide rail (102), the annular outer guide rail (102) is fixedly installed in the circular groove, and a second annular telescopic groove is provided at the top of the annular outer guide rail (102), a second lifting rail (104) is slidably installed in the second annular telescopic groove, the top of the second lifting rail (104) extends out of the second annular telescopic groove, and the tops of the second lifting rail (104) and the first lifting rail (103) are both provided with limiting ring openings, and the bottom of the equipment positioning plate (4) is movably connected in the limiting ring opening; A rotating mechanism, the rotating mechanism being used to drive the angle adjustment shaft (2) to rotate; A lifting mechanism, the lifting mechanism is used to drive the lifting rail 1 (103) and the lifting rail 2 (104) to move up and down; A test equipment positioning mechanism (6), wherein the test equipment positioning mechanism (6) is installed on the equipment positioning plate (4) and is used to fix the equipment to be tested; Table support legs (7), the table support legs (7) are fixedly mounted on the bottom of the EMC test table (1).

2. The EMC test adjustment device according to claim 1, characterized in that: Two supporting sliding mechanisms are installed at the bottom of the equipment positioning plate (4), and the supporting sliding mechanisms include a mounting frame (401) and a bearing pulley (402). The mounting frame (401) is fixedly installed at the bottom of the equipment positioning plate (4), and the bearing pulley (402) is rotatably installed at the lower end of the mounting frame (401), and the two bearing pulleys (402) are respectively slidably connected to the limiting ring openings on the lifting rail 1 (103) and the lifting rail 2 (104).

3. The EMC test adjustment device according to claim 2, characterized in that: The rotating mechanism comprises an adjusting gear ring (201), a servo motor 1 (202) and a driving gear (203); the adjusting gear ring (201) is fixedly mounted on the surface of the angle adjustment shaft (2); the servo motor 1 (202) is fixedly mounted on the bottom of the circular groove; and the output end of the servo motor 1 (202) is fixedly connected to the driving gear (203); the driving gear (203) is meshed with the adjusting gear ring (201).

4. The EMC test adjustment device according to claim 3, characterized in that: The lifting mechanism comprises a side fixing seat (5), a Z-axis screw rod (501) and a threaded engagement seat (502); the side fixing seats (5) distributed in upper and lower positions are fixedly installed on both sides of the EMC test bench (1); and a Z-axis screw rod (501) is rotatably installed between the two side fixing seats (5) on the same side; the threaded engagement seats (502) are threadedly installed on the two Z-axis screw rods (501); and the side surfaces of the threaded engagement seats (502) are fixedly connected with a driving rod (105); a movable opening (106) is provided on the side surface of the EMC test bench (1); and sliding openings are provided on the sides of the annular inner guide rail (101) and the annular outer guide rail (102); the driving rod (105) is slidably connected in the movable opening (106) and the sliding opening; and the driving rod (105) is fixedly passed through the lifting rail 2 (104) and fixedly connected to the lifting rail 1 (103).

5. The EMC test adjustment device according to claim 4, characterized in that: A servo motor 2 (503) is fixedly mounted on the platform support leg (7), and the output end of the servo motor 2 (503) is fixedly connected to one of the Z-axis screw rods (501), and sprockets (504) are fixedly mounted on both of the Z-axis screw rods (501), and the two sprockets (504) are connected in transmission via a transmission chain (505).

6. The EMC test adjustment device according to claim 5, characterized in that: The testing equipment positioning mechanism (6) comprises a slide groove (601), a limiting slide column (602), a pushing block (603) and a clamping positioning plate (604). The top of the equipment positioning plate (4) is provided with four slide grooves (601) distributed in a cross shape. A limiting slide column (602) is fixedly installed in each of the slide grooves (601). The pushing block (603) is slidably installed on the limiting slide column (602) and slidably connected in the slide groove (601). The clamping positioning plate (604) is fixedly installed on the top of the pushing block (603), and the clamping positioning plate (604) is located outside the slide groove (601).

7. The EMC test adjustment device according to claim 6, characterized in that: A mounting block (605) is fixedly mounted on the clamping positioning plate (604), and a rotating shaft is rotatably mounted on the mounting block (605). The bottom end of the rotating shaft extends into the slide groove (601) and is fixedly mounted with a traveling gear (606). A parallel rack (607) parallel to the limiting slide column (602) is fixedly mounted in the slide groove (601), and the parallel rack (607) passes through the through hole inside the propulsion block (603). The traveling gear (606) is meshed with the parallel rack (607), and a quick-shift handle (608) is fixedly mounted on the top end of the rotating shaft.

8. The EMC test adjustment device according to claim 1, characterized in that: The limiting insert frame (3) is matched with the rectangular slot.

9. The EMC test adjustment device according to claim 2, characterized in that: The load-bearing pulley (402) rolls on the inner bottom wall of the limiting ring.

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