Power frequency magnetic field immunity test fixture

Abstract

The utility model provides a power frequency magnetic field immunity test fixture, which belongs to the technical field of power frequency magnetic field immunity test and comprises a base frame provided with a lifting column; the lifting seat is provided with a lifting hole and a rotating hole, and the lifting column penetrates through the lifting hole; the first fastener is arranged on the lifting seat and can be used for relatively fixing the lifting column and the lifting seat; the clamping assembly is provided with a rotating column, the rotating column penetrates through the rotating hole, and the clamping assembly is used for clamping a coil; and the second fastener is arranged on the lifting seat and can be used for relatively fixing the rotating column and the lifting seat. The beneficial effects of the utility model are that the clamping assembly used for clamping the coil can change the position and rotate the angle, thereby realizing the simulation of various different power frequency magnetic fields.

Description

Technical Field

[0001] The utility model belongs to the technical field of power frequency magnetic field immunity testing, and relates to a jig for power frequency magnetic field immunity test. Background Technique

[0002] Power frequency magnetic fields can have varying degrees of impact on various electrical and electronic devices. Power frequency magnetic field immunity is used to evaluate the magnetic field immunity performance of household, commercial, and industrial electrical and electronic devices in power frequency (continuous and short-term) magnetic fields. The power frequency magnetic field immunity test instrument includes an induction coil for generating a magnetic field and a power frequency excitation power supply for supplying current to the induction coil.

[0003] In the prior art, the coil is fixed and cannot be moved, and it is impossible to simulate various different power frequency magnetic field environments, leaving much room for improvement. Summary of the Invention

[0004] The purpose of the present utility model is to address the above problems existing in the prior art and propose a jig for power frequency magnetic field immunity test.

[0005] The purpose of the present utility model can be achieved by the following technical solutions: A jig for power frequency magnetic field immunity test, comprising:

[0006] A base frame provided with a lifting column;

[0007] A lifting seat provided with a lifting hole and a rotating hole, and the lifting column passes through the lifting hole;

[0008] A first fastener provided on the lifting seat and capable of relatively fixing the lifting column and the lifting seat;

[0009] A clamping assembly provided with a rotating column, the rotating column passes through the rotating hole, and the clamping assembly is used for clamping the coil;

[0010] A second fastener provided on the lifting seat and capable of relatively fixing the rotating column and the lifting seat.

[0011] In the above-mentioned jig for power frequency magnetic field immunity test, the first fastener is set as a first fastening screw, the lifting seat is further provided with a first fastening hole, the first fastening hole is communicated with the lifting hole, and the first fastening screw is threadedly connected with the first fastening hole and can contact the lifting column.

[0012] In the above-mentioned jig for power frequency magnetic field immunity test, the second fastener is set as a second fastening screw, the lifting seat is further provided with a second fastening hole, the second fastening hole is communicated with the rotating hole, and the second fastening screw is threadedly connected with the second fastening hole and can contact the rotating column.

[0013] In the above-mentioned power frequency magnetic field immunity test fixture, the clamping assembly includes two clamping blocks and a third fastener. The two clamping blocks can approach or move away from each other, and the third fastener can relatively fix the two clamping blocks. The rotating column is arranged on one of the clamping blocks.

[0014] In the above-mentioned power frequency magnetic field immunity test fixture, the third fastener includes a third fastening screw and a first fastening nut. The clamping block is provided with a clamping hole. The third fastening screw sequentially passes through the clamping holes of the two clamping blocks and is threadedly connected to the first fastening nut.

[0015] In the above-mentioned power frequency magnetic field immunity test fixture, it further includes a fourth fastener. The base frame is further provided with a connecting seat. The lifting column is connected to the base frame through the connecting seat, and the connecting seat is detachably connected to the base frame through the fourth fastener.

[0016] In the above-mentioned power frequency magnetic field immunity test fixture, the fourth fastener includes a fourth fastening screw and a second fastening nut. The base frame is further provided with a connecting groove, and the connecting seat is provided with a connecting hole. The head of the fourth fastening screw is located in the connecting groove, and the tail of the fourth fastening screw passes through the connecting hole and is threadedly connected to the second fastening nut.

[0017] In the above-mentioned power frequency magnetic field immunity test fixture, the connecting groove is a strip-shaped groove, and the head of the second fastening nut can move along the length direction of the connecting groove.

[0018] In the above-mentioned power frequency magnetic field immunity test fixture, the base frame is further provided with traveling wheels for traveling on the ground.

[0019] In the above-mentioned power frequency magnetic field immunity test fixture, the base frame includes a middle part and two side parts. One ends of the two side parts are respectively connected to both ends of the middle part, thereby forming a U-shaped structure.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. The lifting column is relatively fixed to the lifting seat with respect to the base frame by passing the lifting column through the lifting hole and the first fastener, and the rotating column is relatively fixed to the lifting seat with respect to the lifting seat by passing the rotating column through the rotating hole and the second fastener, so that the clamping assembly for clamping the coil can change its position and rotate its angle, realizing the simulation of various different power frequency magnetic fields.

[0022] 2. The first fastening screw is threadedly connected to the first fastening hole and can contact the lifting column, so as to limit the lifting of the lifting seat relative to the lifting column through the contact friction between the tail of the first fastening screw and the lifting column.

[0023] 3. The second fastening screw is threadedly connected to the second fastening hole and can contact the rotating column, so as to limit the rotation of the rotating column relative to the lifting seat through the contact friction between the tail of the second fastening screw and the rotating column.

[0024] 4. The loading and unloading of the coil or the replacement of different clamped coils are realized by adjusting the two clamping blocks to approach or separate from each other.

[0025] 5. The third fastening screw sequentially passes through the clamping holes of the two clamping blocks and is threadedly connected to the first fastening nut, so as to realize stepless adjustment of the distance between the two clamping blocks.

[0026] 6. The head of the second fastening nut can move along the length direction of the connecting groove, so the position of the connecting seat relative to the base frame can be adjusted.

[0027] 7. One ends of the two sides are respectively connected to the two ends of the middle part, so as to form a U-shaped structure. This semi-enclosed U-shaped structure allows the base frame to move to the test bench located inside the base frame for testing. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the power frequency magnetic field immunity test fixture of the present utility model.

[0029] Figure 2 is an exploded view of the power frequency magnetic field immunity test fixture of the present utility model.

[0030] Figure 3 is a top view of the power frequency magnetic field immunity test fixture of the present utility model.

[0031] Figure 4 is Figure 3 a sectional view taken along the A-A view of

[0032] Figure 5 is Figure 3 a sectional view taken along the B-B view of

[0033] Figure 6 is a right view of the power frequency magnetic field immunity test fixture of the present utility model.

[0034] Figure 7 is Figure 6 a sectional view taken along the C-C view of

[0035] Figure 8 is an exploded view of the clamping assembly of the present utility model.

[0036] In the figure, 100 is the base frame; 110 is the connecting seat; 111 is the lifting column; 112 is the connecting hole; 120 is the traveling wheel; 130 is the middle part; 140 is the side part; 141 is the connecting groove; 200 is the lifting seat; 210 is the lifting hole; 220 is the rotating hole; 230 is the first fastening hole; 240 is the second fastening hole; 300 is the first fastening screw; 410 is the clamping block; 411 is the rotating column; 412 is the clamping hole; 420 is the third fastening screw; 430 is the first fastening nut; 500 is the second fastening screw; 610 is the fourth fastening screw; 620 is the second fastening nut; 700 is the coil. Detailed implementation mode

[0037] The following are specific embodiments of the present invention and in combination with the attached drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0038] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0039] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, for example, two, three, etc., unless otherwise specifically and clearly defined.

[0040] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways of substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0043] As Figures 1 - 8 shown, a power frequency magnetic field immunity test fixture includes: a base frame 100, a lifting seat 200, a clamping assembly, and a second fastener.

[0044] Among them, the base frame 100 is provided with a lifting column 111.

[0045] Among them, the lifting seat 200 is provided with a lifting hole 210 and a rotating hole 220, and the lifting column 111 passes through the lifting hole 210.

[0046] Among them, the first fastener is arranged on the lifting seat 200 and can relatively fix the lifting column 111 and the lifting seat 200.

[0047] Among them, the clamping assembly is provided with a rotating column 411, the rotating column 411 passes through the rotating hole 220, and the clamping assembly is used for clamping the coil 700.

[0048] Among them, the second fastener is arranged on the lifting seat 200 and can relatively fix the rotating column 411 and the lifting seat 200.

[0049] In this embodiment, the lifting seat 200 is lifted and fixed relative to the base frame 100 by the lifting column 111 passing through the lifting hole 210 and the first fastener to relatively fix the lifting column 111 and the lifting seat 200. The clamping assembly for clamping the coil 700 can change its position and rotation angle by the rotating column 411 passing through the rotating hole 220 and the second fastener to relatively fix the rotating column 411 and the lifting seat 200, so as to realize a variety of different power frequency magnetic field simulations.

[0050] As Figures 1 - 8 shown, on the basis of the above embodiment, the first fastener is set as a first fastening screw 300, the lifting seat 200 is further provided with a first fastening hole 230, the first fastening hole 230 is communicated with the lifting hole 210, and the first fastening screw 300 is threadedly connected with the first fastening hole 230 and can contact the lifting column 111.

[0051] In this embodiment, the first fastening screw 300 is threadedly connected to the first fastening hole 230 and can contact the lifting column 111, so as to limit the lifting of the lifting seat 200 relative to the lifting column 111 through the contact and friction between the tail of the first fastening screw 300 and the lifting column 111.

[0052] As another embodiment, the first fastener can also be set as a locking pin, and the lifting seat 200 is further provided with a plurality of first locking holes, and the locking pin can be inserted into any one of the first locking holes.

[0053] As Figures 1 - 8 shown, on the basis of the above embodiment, the second fastener is set as the second fastening screw 500, the lifting seat 200 is further provided with a second fastening hole 240, the second fastening hole 240 communicates with the rotation hole 220, and the second fastening screw 500 is threadedly connected to the second fastening hole 240 and can contact the rotating column 411.

[0054] In this embodiment, the second fastening screw 500 is threadedly connected to the second fastening hole 240 and can contact the rotating column 411, so as to limit the rotation of the rotating column 411 relative to the lifting seat 200 through the contact and friction between the tail of the second fastening screw 500 and the rotating column 411.

[0055] As another embodiment, the second fastener can also be set as a locking pin, and the lifting seat 200 is further provided with a plurality of second locking holes, and the locking pin can be inserted into any one of the second locking holes.

[0056] As Figures 1 - 8 shown, on the basis of the above embodiment, the clamping assembly includes two clamping blocks 410 and a third fastener. The two clamping blocks 410 can approach or separate from each other, the third fastener can relatively fix the two clamping blocks 410, and the rotating column 411 is arranged on one of the clamping blocks 410.

[0057] In this embodiment, the loading and unloading of the coil 700 or the replacement of different clamped coils 700 are realized by adjusting the approach or separation of the two clamping blocks 410.

[0058] As Figures 1 - 8 shown, on the basis of the above embodiment, the third fastener includes a third fastening screw 420 and a first fastening nut 430. The clamping block 410 is provided with a clamping hole 412. The third fastening screw 420 sequentially passes through the clamping holes 412 of the two clamping blocks 410 and is threadedly connected to the first fastening nut 430.

[0059] In this embodiment, the third fastening screw 420 sequentially passes through the clamping holes 412 of the two clamping blocks 410 and is threadedly connected to the first fastening nut 430, thereby realizing stepless adjustment of the distance between the two clamping blocks 410.

[0060] As Figures 1 - 8 shown, on the basis of the above embodiment, it further includes a fourth fastener. The base frame 100 is further provided with a connecting seat 110. The lifting column 111 is connected to the base frame 100 through the connecting seat 110, and the connecting seat 110 is detachably connected to the base frame 100 through the fourth fastener.

[0061] In this embodiment, the connecting seat 110 is detachably connected to the base frame 100 through the fourth fastener, so that the connecting seat 110 can be easily disassembled and assembled with the base frame 100.

[0062] As Figures 1 - 8 shown, on the basis of the above embodiment, the fourth fastener includes a fourth fastening screw 610 and a second fastening nut 620. The base frame 100 is further provided with a connecting groove 141, and the connecting seat 110 is provided with a connecting hole 112. The head of the fourth fastening screw 610 is located in the connecting groove 141, and the tail of the fourth fastening screw 610 passes through the connecting hole 112 and is threadedly connected to the second fastening nut 620.

[0063] Specifically, the connecting groove 141 is a strip-shaped groove, and the head of the second fastening nut 620 can move along the length direction of the connecting groove 141.

[0064] In this embodiment, the head of the second fastening nut 620 can move along the length direction of the connecting groove 141, so the position of the connecting seat 110 relative to the base frame 100 can be adjusted.

[0065] As Figures 1 - 8 shown, on the basis of the above embodiment, the base frame 100 is further provided with traveling wheels 120 for traveling on the ground.

[0066] In this embodiment, the base frame 100 can travel on the ground through the traveling wheels 120, so that the base frame 100 can be easily moved.

[0067] As Figures 1 - 8 shown, on the basis of the above embodiment, the base frame 100 includes a middle part 130 and two side parts 140. One ends of the two side parts 140 are respectively connected to both ends of the middle part 130, thereby forming a U-shaped structure.

[0068] In this embodiment, one end of each of the two side portions 140 is connected to both ends of the middle portion 130, thereby forming a U-shaped structure. This semi-enclosed U-shaped structure allows the base frame 100 to move to the test bench located inside the base frame 100 for testing.

Claims

1. A power frequency magnetic field immunity test fixture, characterized in that, Comprising: A base frame provided with lifting columns; A lifting seat provided with a lifting hole and a rotating hole, and the lifting column passes through the lifting hole; A first fastener provided on the lifting seat and capable of relatively fixing the lifting column and the lifting seat; A clamping assembly provided with a rotating column, the rotating column passes through the rotating hole, and the clamping assembly is used for clamping a coil; A second fastener provided on the lifting seat and capable of relatively fixing the rotating column and the lifting seat.

2. The fixture for power frequency magnetic field immunity test according to claim 1, characterized in that: The first fastener is set as a first fastening screw, and the lifting seat is further provided with a first fastening hole which is communicated with the lifting hole, and the first fastening screw is threadedly connected with the first fastening hole and can contact the lifting column.

3. The fixture for power frequency magnetic field immunity test according to claim 1, characterized in that: The second fastener is set as a second fastening screw, and the lifting seat is further provided with a second fastening hole which is communicated with the rotating hole, and the second fastening screw is threadedly connected with the second fastening hole and can contact the rotating column.

4. The fixture for power frequency magnetic field immunity test according to claim 1, wherein: The clamping assembly includes two clamping blocks and a third fastener. The two clamping blocks can approach or separate from each other, and the third fastener can relatively fix the two clamping blocks. The rotating column is arranged on one of the clamping blocks.

5. The fixture for power frequency magnetic field immunity test according to claim 4, characterized in that: The third fastener includes a third fastening screw and a first fastening nut. The clamping block is provided with a clamping hole, and the third fastening screw sequentially passes through the clamping holes of the two clamping blocks and is threadedly connected with the first fastening nut.

6. The fixture for power frequency magnetic field immunity test according to claim 1, characterized in that: It further includes a fourth fastener. The base frame is further provided with a connecting seat, the lifting column is connected to the base frame through the connecting seat, and the connecting seat is detachably connected to the base frame through the fourth fastener.

7. The fixture for power frequency magnetic field immunity test according to claim 6, characterized in that: The fourth fastener includes a fourth fastening screw and a second fastening nut. The base frame is further provided with a connecting groove, the connecting seat is provided with a connecting hole, the head of the fourth fastening screw is located in the connecting groove, and the tail of the fourth fastening screw passes through the connecting hole and is threadedly connected with the second fastening nut.

8. A power frequency magnetic field immunity test fixture according to claim 7, characterized in that: The connecting groove is a strip-shaped groove, and the head of the second fastening nut can move along the length direction of the connecting groove.

9. A power frequency magnetic field immunity test fixture according to claim 1, characterized in that: The base frame is further provided with traveling wheels for traveling on the ground.

10. A power frequency magnetic field immunity test fixture according to claim 1 or 9, characterized in that: The base frame includes a middle part and two side parts. One ends of the two side parts are respectively connected to two ends of the middle part, thereby forming a U-shaped structure.

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