Dual range resolver with rotatable coil support structure

Abstract

The utility model discloses a double roth coil range switching device of rotatable coil support structure, especially relates to mechanical engineering technical field, the outside symmetry of double roth coil is provided with two arc plates, and the left and right sides of an arc plate are provided with threaded rods respectively, and the right side of an arc plate is provided with first connecting plate, and the left side of second connecting plate is provided with first arc support plate, and the left side of connecting column is provided with second arc support plate. The utility model discloses a double roth coil range switching device of rotatable coil support structure improves the double roth coil range switching device of traditional rotatable coil support structure, and the reliability of traditional rotatable coil support structure's double roth coil range switching device measurement data is improved with additional structure, and the double roth coil is supported, and the effect that prevents the condition that the measurement result deviation is relatively large after range switching is played, and the reliability of measurement is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a dual Rogowski coil range switching device with a rotatable coil support structure. Background Technology

[0002] The dual Rogowski coil is a current measuring element developed from the traditional single Rogowski coil. Its core function is to achieve high-precision measurement of a wide range of alternating currents by working together with two Rogowski coils that have matched parameters but complementary ranges.

[0003] The dual Rogowski coil range switching device is mainly used to change the measurement range of the dual Rogowski coil to adapt to the measurement requirements of different current sizes, ensuring the accuracy and reliability of the measurement.

[0004] However, existing dual Rogowski coil range switching devices have the following shortcomings: Traditional dual Rogowski coil range switching devices require the coil to be in the optimal measurement state during range switching. However, these devices lack a rotatable coil support structure to support the dual Rogowski coils, resulting in significant deviations in measurement results after range switching and affecting measurement reliability. Utility Model Content

[0005] The main purpose of this invention is to provide a dual Rogowski coil range switching device with a rotatable coil support structure, which can effectively solve the problem of large deviations in measurement results after range switching, thus affecting the reliability of measurement.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A dual Rogowski coil range switching device with a rotatable coil support structure includes dual Rogowski coils, a microcontroller development board, a magnetically coupled relay, and an oscilloscope. A rotating support mechanism and a positioning mechanism are mounted on the outer side of the dual Rogowski coils. The rotating support mechanism includes a second connecting plate and a support plate. Two arc-shaped plates are symmetrically arranged on the outer side of the double Rogowski coil. Threaded rods are arranged on the left and right sides of one arc-shaped plate. A first connecting plate is arranged on the right side of one arc-shaped plate. A first arc-shaped support plate is arranged on the left side of the second connecting plate. A connecting column is arranged through the first arc-shaped support plate on the left side of the second connecting plate. A second arc-shaped support plate is arranged on the left side of the connecting column. A plate is arranged on the right side of the second connecting plate. A block is arranged on the right side of the plate. A hinge block is arranged on the left side above the support plate. A column rod is arranged inside the left side of the hinge block.

[0007] Preferably, the two arc-shaped plates are fixedly connected by two threaded rods.

[0008] Preferably, the left side below the plate is located on the right side of the rear of the first connecting plate.

[0009] Preferably, the right side of the block is located on the outer side of the middle part of the column.

[0010] Preferably, the positioning mechanism includes a column plate, a limiting post is provided inside the right side of the column plate, a circular plate is provided outside the limiting post, a spring is provided outside the limiting post, and multiple limiting grooves are provided in a ring on the front side of the hinge block.

[0011] Preferably, one side of the spring is fixedly connected to the side end of the circular plate, the other side of the spring is fixedly connected to the inside of the column plate, and the rear part of the limiting column is engaged with the inside of the limiting groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a rotating support mechanism, the threaded rod fixes two arc-shaped plates to the outside of the double Rogowski coil. The block rotates inside the hinge block, and the connecting column slides and engages inside the second connecting plate. The measured lead is located at the center of the inner side of the second arc-shaped support plate. The mechanism adopts the mechanical transmission principle, which improves the double Rogowski coil range switching device of the traditional rotatable coil support structure. The additional structure improves the reliability of the measurement data of the double Rogowski coil range switching device of the traditional rotatable coil support structure, supports the double Rogowski coil, and prevents the measurement result from deviating greatly after the range switching, thereby improving the reliability of the measurement.

[0013] 2. By setting a positioning mechanism, the limiting post and the circular plate slide inside the post plate, the spring deforms, the block rotates around the center of the post, and the limiting post is driven by the spring to be inserted into the limiting groove, which makes it easy to fix the block stably inside the hinge block, and at the same time makes it easy to install the support plate in a suitable position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional view of the rotating support mechanism of this utility model; Figure 3 This is a bottom-view perspective view of the rotating support mechanism of this utility model; Figure 4 This is a three-dimensional cross-sectional view of the hinge block and column plate of this utility model. Figure 5 This is a perspective view of the separated structure of the column plate, column rod, and hinge block of this utility model.

[0015] In the diagram: 1. Dual Rogowski coils; 2. Microcontroller development board; 3. Rotating support mechanism; 31. Arc-shaped plate; 32. Threaded rod; 33. First connecting plate; 34. Second connecting plate; 35. First arc-shaped support plate; 36. Connecting column; 37. Second arc-shaped support plate; 38. Plate; 39. Block; 310. Hinge block; 311. Support plate; 312. Column; 4. Positioning mechanism; 41. Column plate; 42. Limiting column; 43. Circular plate; 44. Spring; 45. Limiting groove; 5. Magnetic coupling relay; 6. Oscilloscope. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figure 1 -Appendix Figure 5 As shown, the dual Rogowski coil range switching device with a rotatable coil support structure includes a dual Rogowski coil 1, a microcontroller development board 2, a magnetically coupled relay 5, and an oscilloscope 6. A rotating support mechanism 3 is mounted on the outer side of the dual Rogowski coil 1, and a positioning mechanism 4 is also mounted on the outer side of the dual Rogowski coil 1. The rotating support mechanism 3 includes a second connecting plate 34 and a support plate 311. Two arc-shaped plates 31 are symmetrically arranged on the outer side of the dual Rogowski coil 1. Threaded rods 32 are respectively arranged on the left and right sides of one arc-shaped plate 31. A first connecting plate 33 is arranged on the right side of one arc-shaped plate 31, and a first arc-shaped support plate 311 is arranged on the left side of the second connecting plate 34. A connecting column 36 is provided inside the left side of the support plate 35 and the second connecting plate 34, penetrating the first arc-shaped support plate 35. A second arc-shaped support plate 37 is provided to the left of the connecting column 36. A plate 38 is provided to the right of the second connecting plate 34. A block 39 is provided to the right of the plate 38. A hinge block 310 is provided on the left side above the support plate 311. A column rod 312 is provided inside the left side of the hinge block 310. The two arc-shaped plates 31 are fixedly connected by two threaded rods 32. The left side below the plate 38 is located on the right side of the rear part of the first connecting plate 33. The right side of the block 39 is located on the outer side of the middle part of the column rod 312.

[0018] The overall effect of Embodiment 1 is as follows: the relevant components can improve the reliability of measurement data of the dual Rogowski coil range switching device with a traditional rotatable coil support structure through mechanical transmission. The function of setting the first arc-shaped support plate 35 is to facilitate the measurement of the test wire with a larger specification. The output end of the dual Rogowski coil 1 is connected to the analog input pin of the microcontroller development board 2 through a cable. The control end of the magnetic coupling relay 5 is connected to the pin of the microcontroller development board 2 through a cable. One end of the magnetic coupling relay 5 is connected to the power supply through a cable. The other end of the magnetic coupling relay 5 is connected to the output end of the microcontroller development board 2 through a cable. The common output end of the magnetic coupling relay 5 is connected to the signal input channel of the oscilloscope 6 through a cable. The oscilloscope 6 is connected to the power supply through an external cable. The microcontroller development board 2 is a Mini-SPIN0230 development board, which can also serve as a signal preprocessing circuit and a signal detection and comparison circuit to realize the range switching function of the dual Rogowski coil 1. This mechanical transmission method supports the dual Rogowski coil and prevents the measurement result from deviating greatly after the range switching, thereby improving the reliability of the measurement.

[0019] Example 2, as Figures 1-5 As shown, the positioning mechanism 4 includes a column plate 41. A limiting post 42 is provided inside the right side of the column plate 41. A circular plate 43 is provided outside the limiting post 42. A spring 44 is provided outside the limiting post 42. A plurality of limiting grooves 45 are provided in a ring on the front side of the hinge block 310. One side of the spring 44 is fixedly connected to the side end of the circular plate 43, and the other side of the spring 44 is fixedly connected to the inside of the column plate 41. The rear part of the limiting post 42 is engaged inside the limiting groove 45.

[0020] The effect achieved by the entire embodiment 2 is as follows: by setting the positioning mechanism 4, the limiting post 42 and the circular plate 43 slide inside the column plate 41, the spring 44 deforms, the block 39 rotates around the center of the column rod 312, and the limiting post 42 is driven by the spring 44 to be inserted into the limiting groove 45, which makes it easy to fix the block 39 stably inside the hinge block 310, and at the same time makes it easy to install the support plate 311 in a suitable position.

[0021] When the conductor under test is placed at an angle using a clamping tool, the operator places the oscilloscope 6, magnetic coupling relay 5, microcontroller development board 2, and dual Rogowski coil 1 in a position that allows for the placement of the aforementioned devices. Then, the threaded rod 32 is used to position the support plate 311 at a distance shorter than the conductor under test. At this point, the center of the induction ring of the dual Rogowski coil 1 can be inserted through the outside of the conductor under test (the second arc-shaped support plate 37 and the first arc-shaped support plate 35 are semi-circular). The limiting post 42 is pulled outwards, causing it to slide inside the post plate 41. As the limiting post 42 slides, the circular plate 43 follows, causing the spring 44 to deform. The rod 312 rotates inside the hinge block 310. Simultaneously with pulling the limiting post 42 outwards, the connecting... Column 36 slides inside the second connecting plate 34. When the center of the second arc-shaped support plate 37 coincides with the conductor being measured, the limiting column 42 is slowly released. Under the action of the spring 44, the limiting column 42 engages with the limiting groove 45. The power is turned on, and the dual Rogowski coil 1 senses the voltage signal generated by the measured current. The signal is transmitted to the microcontroller development board 2 via cable for amplification and other processing. The microcontroller development board 2 transmits the processed signal to the magnetically coupled relay 5 via cable. When the microcontroller development board 2 determines that the measured signal exceeds or is less than the current range threshold, it sends a control signal to the magnetically coupled relay 5, causing the magnetically coupled relay 5 to operate. The magnetically coupled relay 5 switches the dual Rogowski coil signal of different ranges according to the control command and transmits the corresponding range signal to the oscilloscope 6.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dual Rogowski coil range switching device with a rotatable coil support structure, characterized in that: Includes a dual Rogowski coil (1), a microcontroller development board (2), a magnetically coupled relay (5), and an oscilloscope (6). The dual Rogowski coil (1) is equipped with a rotating support mechanism (3) on its outer side and a positioning mechanism (4) on its outer side. The rotating support mechanism (3) includes a second connecting plate (34) and a support plate (311). Two arc-shaped plates (31) are symmetrically arranged on the outer side of the double Rogowski coil (1). Threaded rods (32) are respectively arranged on the left and right sides of one arc-shaped plate (31). A first connecting plate (33) is arranged on the right side of one arc-shaped plate (31). A first arc-shaped support plate (35) is arranged on the left side of the second connecting plate (34). A connecting column (36) is arranged through the first arc-shaped support plate (35) on the left side of the second connecting plate (34). A second arc-shaped support plate (37) is arranged on the left side of the connecting column (36). A plate (38) is arranged on the right side of the second connecting plate (34). A block (39) is arranged on the right side of the plate (38). A hinge block (310) is arranged on the left side above the support plate (311). A column rod (312) is arranged inside the left side of the hinge block (310).

2. The dual Rogowski coil range switching device with a rotatable coil support structure according to claim 1, characterized in that: The two arc-shaped plates (31) are fixedly connected by two threaded rods (32).

3. The dual Rogowski coil range switching device with a rotatable coil support structure according to claim 1, characterized in that: The left side below the plate (38) is located on the right side of the rear of the first connecting plate (33).

4. The dual Rogowski coil range switching device with a rotatable coil support structure according to claim 1, characterized in that: The right side of the block (39) is located on the outer side of the middle part of the column (312).

5. The dual Rogowski coil range switching device with a rotatable coil support structure according to claim 1, characterized in that: The positioning mechanism (4) includes a column plate (41), a limiting post (42) is provided inside the right side of the column plate (41), a circular plate (43) is provided outside the limiting post (42), a spring (44) is provided outside the limiting post (42), and multiple limiting grooves (45) are provided on the front side of the hinge block (310).

6. The dual Rogowski coil range switching device with a rotatable coil support structure according to claim 5, characterized in that: One side of the spring (44) is fixedly connected to the side end of the circular plate (43), and the other side of the spring (44) is fixedly connected to the inside of the column plate (41). The rear part of the limiting column (42) is engaged in the inside of the limiting groove (45).

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