Tool clamp for testing multi-turn performance of magnetic core

Abstract

The utility model relates to the technical field of magnetic core multi-turn performance test work fixtures, in particular to a work fixture for testing magnetic core multi-turn performance, which comprises a base, a magnetic core multi-turn test fixture component and an insulating rubber placing table. An insulating rubber placing table is arranged at the upper end of the base; and a magnetic core multi-turn test fixture assembly is arranged on one side of the insulating rubber placing table. After the tightness adjusting screw rod is loosened, the lifting adjusting frame vertically slides along the outer wall of the vertical rod for adjustment, then the tightness adjusting screw rod is tightened to fix the lifting adjusting frame on the vertical rod, and the elevation adjusting block rotates around the rotating shaft on the inner wall of the lifting adjusting frame in a damping manner, so that the elevation adjusting function of the elevation adjusting block is realized; and the locking bolt is adjusted in the movable grooves in the elevation angle adjusting block and the connecting plate, so that the connecting plate can move along the upper end surface of the elevation angle adjusting block.

Description

Technical Field

[0001] This utility model relates to the field of tooling fixtures for testing the performance of multi-turn magnetic cores, and particularly to tooling fixtures for testing the performance of multi-turn magnetic cores. Background Technology

[0002] Currently, existing multi-turn magnetic core performance testing devices have many shortcomings. Among them, the attitude adjustment of multi-turn cables is extremely inconvenient. In actual testing, in order to adapt to different specifications of magnetic cores and meet diverse testing needs, the attitude of multi-turn cables needs to be adjusted frequently. However, existing testing devices often lack convenient and efficient cable attitude adjustment structures. Operators can only adjust the position and angle of the cable manually with great difficulty. This not only consumes a lot of time, but also makes it difficult to guarantee the accuracy of each adjustment.

[0003] Furthermore, the clamping of multi-turn cables is unstable and difficult to adjust. Multi-turn cables must be firmly clamped during testing to ensure the accuracy and stability of the test results. However, existing clamping devices have design flaws and cannot reliably fix multi-turn cables. Cables are prone to loosening and displacement. Once the cable clamping is unstable, it will cause problems such as unstable signal transmission and electromagnetic interference during testing, which will seriously affect the reliability of the test data. Moreover, when it is necessary to adjust the clamping position and force of the cable, the operation process is complicated and it is difficult to achieve fast and accurate adjustment. Utility Model Content

[0004] In order to overcome the problems of existing magnetic core multi-turn performance testing devices, which are inconvenient to adjust the posture of multi-turn cables, unstable clamping of multi-turn cables and difficult adjustment, resulting in time-consuming, labor-intensive and unstable testing of magnetic core multi-turn performance, this utility model provides a tooling fixture for testing the multi-turn performance of magnetic cores.

[0005] The technical solution is as follows: A tooling fixture for testing the multi-turn performance of a magnetic core includes a base, a multi-turn magnetic core testing fixture assembly, and an insulating rubber placement platform; the upper end of the base is provided with an insulating rubber placement platform; the multi-turn magnetic core testing fixture assembly is provided on one side of the insulating rubber placement platform; the multi-turn magnetic core testing fixture assembly includes a lifting adjustment frame, a vertical rod, a tension adjustment screw, an elevation adjustment block, a connecting plate, a locking bolt, a magnetic core detector, a cable clamping plate, and a locking nut.

[0006] Furthermore, a lifting adjustment frame is provided above the base; a vertical rod is provided inside the lifting adjustment frame, and the vertical rod is threadedly connected to the base; a tension adjustment screw is provided on one side of the lifting adjustment frame, and the tension adjustment screw is threadedly locked to the lifting adjustment frame, and the screw of the tension adjustment screw passes through the lifting adjustment frame and is pressed and braked against the outer wall of the vertical rod.

[0007] Furthermore, the lifting adjustment frame is equipped with an elevation adjustment block inside, and the elevation adjustment block is damped and rotatably connected to the inner wall of the lifting adjustment frame.

[0008] Furthermore, a connecting plate is provided at the upper end of the elevation adjustment block; a locking bolt is provided inside the connecting plate, and the locking bolt passes through the connecting plate and the elevation adjustment block, fixing the elevation adjustment block and the connecting plate as a whole.

[0009] Furthermore, a magnetic core detector is provided at the upper end of the connecting plate, and the magnetic core detector is fixedly connected to the connecting plate.

[0010] Furthermore, the front end of the magnetic core detector is provided with a cable clamping plate, which is composed of two electrical clamping plates and is electrically connected to the magnetic core monitoring unit of the magnetic core detector.

[0011] Furthermore, a locking nut is provided on the outside of the cable clamping plate, and the locking nut is threadedly connected to the cable clamping plate.

[0012] The beneficial effects are as follows: After loosening the tension adjustment screw, the lifting adjustment frame slides vertically along the outer wall of the vertical rod. Then, by tightening the tension adjustment screw, the lifting adjustment frame is fixed on the vertical rod. With the damped rotation of the elevation adjustment block around the pivot of the inner wall of the lifting adjustment frame, the elevation adjustment block can be adjusted. The adjustment of the locking bolt in the movable groove inside the elevation adjustment block and the connecting plate can be adjusted to move the connecting plate along the upper surface of the elevation adjustment block.

[0013] By adjusting the cable clamping tab at one end of the magnetic core detector, the inductance performance of a multi-turn wire test is N² related to the inductance performance of a single-turn wire test. If we consider the cable as having undergone special processing, effectively combining the original multi-turn wires into a structure similar to a single-turn cable, then this relationship can be used to simplify the analysis of inductance performance when testing the magnetic core. For example, if the number of turns in a multi-turn test is N, its inductance performance has a specific multiple relationship with the equivalent single-turn performance. During testing, the magnetic core is passed through the multi-turn cable, and then the two ends of the cable are aligned and connected to form a closed loop. One end of the cable is clamped by the cable clamping tab and locked with a locking nut. The magnetic performance testing instrument clamps the exposed multi-turn wires at the other end through the cable clamping tab, applying current or magnetic field signals to the wires passing through the magnetic core to measure the magnetic performance parameters of the magnetic core, thus completing the multi-turn winding (equivalent to a single-turn cable) test. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the overall frontal three-dimensional structure of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the magnetic core multi-turn test fixture assembly of this utility model;

[0018] Figure 5 This is a cross-sectional three-dimensional structural diagram of the magnetic core multi-turn test fixture assembly of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1. Base; 2. Multi-turn magnetic core test fixture assembly; 3. Insulating rubber placement platform; 201. Lifting adjustment frame; 202. Vertical rod; 203. Tightness adjustment screw; 204. Elevation adjustment block; 205. Connecting plate; 206. Locking bolt; 207. Magnetic core detector; 208. Cable clamping plate; 209. Locking nut. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figures 1-5 As shown, the tooling fixture for testing the multi-turn performance of a magnetic core includes a base 1, a multi-turn magnetic core testing fixture assembly 2, and an insulating rubber placement platform 3. The insulating rubber placement platform 3 is provided at the upper end of the base 1. The multi-turn magnetic core testing fixture assembly 2 is provided on one side of the insulating rubber placement platform 3. The multi-turn magnetic core testing fixture assembly 2 includes a lifting adjustment frame 201, a vertical rod 202, a tension adjustment screw 203, an elevation adjustment block 204, a connecting plate 205, a locking bolt 206, a magnetic core detector 207, a cable clamping piece 208, and a locking nut 209.

[0023] A lifting adjustment frame 201 is provided above the base 1; a vertical rod 202 is provided inside the lifting adjustment frame 201, and the vertical rod 202 is threadedly connected to the base 1; a tension adjustment screw 203 is provided on one side of the lifting adjustment frame 201, and the tension adjustment screw 203 is threadedly locked to the lifting adjustment frame 201, and the screw of the tension adjustment screw 203 passes through the lifting adjustment frame 201 and is pressed and braked against the outer wall of the vertical rod 202.

[0024] The lifting adjustment frame 201 is equipped with an elevation adjustment block 204 inside, and the elevation adjustment block 204 is damped and rotatably connected to the inner wall of the lifting adjustment frame 201.

[0025] A connecting plate 205 is provided at the upper end of the elevation adjustment block 204; a locking bolt 206 is provided inside the connecting plate 205, and the locking bolt 206 passes through the connecting plate 205 and the elevation adjustment block 204, and fixes the elevation adjustment block 204 and the connecting plate 205 as a whole.

[0026] A magnetic core detector 207 is provided at the upper end of the connecting plate 205, and the magnetic core detector 207 is fixedly connected to the connecting plate 205.

[0027] After loosening the tension adjustment screw 203, the lifting adjustment frame 201 slides vertically along the outer wall of the vertical rod 202. Then, by tightening the tension adjustment screw 203, the lifting adjustment frame 201 is fixed on the vertical rod 202. With the damped rotation of the elevation adjustment block 204 around the pivot of the inner wall of the lifting adjustment frame 201, the elevation adjustment function of the elevation adjustment block 204 is realized. The adjustment of the locking bolt 206 in the movable groove inside the elevation adjustment block 204 and the connecting plate 205 realizes the movement adjustment function of the connecting plate 205 along the upper end surface of the elevation adjustment block 204.

[0028] Example 2

[0029] Based on Example 1, such as Figures 1-5 As shown, the front end of the magnetic core detector 207 is provided with a cable clamping piece 208, which is composed of two electrical clamping pieces and is electrically connected to the magnetic core monitoring unit of the magnetic core detector 207.

[0030] The cable clamping plate 208 is provided with a locking nut 209 on its outside, and the locking nut 209 is threadedly connected to the cable clamping plate 208.

[0031] By setting the cable clamping piece 208 at one end of the magnetic core detector 207, the inductance performance of the multi-turn wire test and the inductance performance of the single-turn wire test are related by N². If this cable is considered to have been specially treated to equivalently combine the original multi-turn wire into a structure similar to a single-turn cable, then this relationship can be used to simplify the analysis of inductance performance when testing the magnetic core performance. For example, if the number of turns in the multi-turn test is N, its inductance performance has such a specific multiple relationship with the equivalent single-turn test. During the test, the magnetic core is passed through the multi-turn cable, and then the two ends of the cable are aligned and connected to form a closed loop. One end of the cable is clamped by the cable clamping piece 208 and locked with the locking nut 209. The magnetic performance testing instrument clamps these exposed multi-turn cables through the cable clamping piece 208, and then applies current or magnetic field signals to the cable passing through the magnetic core to measure the magnetic performance parameters of the magnetic core, thus completing the test of the multi-turn winding (equivalent to a single-turn cable state).

Claims

1. A tooling fixture for testing the multi-turn performance of a magnetic core, comprising a base (1), a magnetic core multi-turn test fixture assembly (2), characterized in that: It also includes an insulating rubber placement platform (3); the upper end of the base (1) is provided with an insulating rubber placement platform (3); a magnetic core multi-turn test fixture assembly (2) is provided on one side of the insulating rubber placement platform (3); the magnetic core multi-turn test fixture assembly (2) includes a lifting adjustment frame (201), a vertical rod (202), a tension adjustment screw (203), an elevation adjustment block (204), a connecting plate (205), a locking bolt (206), a magnetic core detector (207), a cable clamping plate (208), and a locking nut (209).

2. The test fixture for testing the multi-turn performance of a magnetic core of claim 1, wherein: A lifting adjustment frame (201) is provided above the base (1); a vertical rod (202) is provided inside the lifting adjustment frame (201), and the vertical rod (202) is threadedly connected to the base (1); a tension adjustment screw (203) is provided on one side of the lifting adjustment frame (201), and the tension adjustment screw (203) is threadedly locked to the lifting adjustment frame (201), and the screw of the tension adjustment screw (203) passes through the lifting adjustment frame (201) and is pressed and braked against the outer wall of the vertical rod (202).

3. The tooling fixture for testing the multi-turn performance of a magnetic core according to claim 2, characterized in that: The lifting adjustment frame (201) is equipped with an elevation adjustment block (204) inside, and the elevation adjustment block (204) is connected to the inner wall of the lifting adjustment frame (201) with damping rotation.

4. The test fixture for testing the multi-turn performance of a magnetic core of claim 3, wherein: A connecting plate (205) is provided at the upper end of the elevation adjustment block (204); a locking bolt (206) is provided inside the connecting plate (205), and the locking bolt (206) passes through the connecting plate (205) and the elevation adjustment block (204) and fixes the elevation adjustment block (204) and the connecting plate (205) as a whole.

5. The test fixture for testing the multi-turn performance of a magnetic core of claim 4, wherein: A magnetic core detector (207) is provided at the upper end of the connecting plate (205), and the magnetic core detector (207) is fixedly connected to the connecting plate (205).

6. The test fixture for testing the multi-turn performance of a magnetic core of claim 5, wherein: The front end of the magnetic core detector (207) is provided with a cable clamping piece (208), and the cable clamping piece (208) is composed of two electrical clamping pieces, and the cable clamping piece (208) is electrically connected to the magnetic core monitoring unit of the magnetic core detector (207).

7. The test fixture for testing the multi-turn performance of a magnetic core of claim 6, wherein: The cable clamping plate (208) is provided with a locking nut (209) on the outside, and the locking nut (209) is threadedly connected to the cable clamping plate (208).

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