A calibration device for a current probe

Abstract

This utility model belongs to the field of calibration equipment technology, specifically a calibration device for a current probe. It includes a base, a support plate fixedly connected to the top of the base by bolts, a calibration center conductor fixedly installed on the inner side of the support plate, and a placement plate fixedly connected to the top of the base by bolts. A protective mechanism is provided on the inner side of the support plate. Through the protective mechanism, the meshing of gears and toothed plates allows two toothed plates to move in opposite directions. The sliding connection between the support rod and the sliding groove removes the obstruction of the calibration center conductor by the protective box, ensuring its normal operation. When finished, rotating the rotating rod in the opposite direction closes the two protective boxes, placing the calibration center conductor within a closed space, thus protecting it, preventing damage, and increasing its service life.

Description

Technical Field

[0001] This utility model relates to the field of calibration equipment technology, specifically a calibration device for a current probe. Background Technology

[0002] The calibration device for a current probe is an integrated device that combines installation structure, calibration function, and protection design. It fixes the components through a stable installation structure, uses a current signal with a known accurate value connected to the calibration center conductor as a reference, provides a standard measurement environment for the current probe, and compares the probe's measurement signal with it to determine its accuracy, thus realizing the calibration and measurement of the current probe.

[0003] The calibration device for current probes typically places the calibration center conductor at the center of the support assembly without any protective equipment. During installation, the probe inevitably comes into contact with the calibration center conductor, which can damage the conductor and reduce its lifespan. Utility Model Content

[0004] To address the shortcomings of existing technologies, where the probe inevitably comes into contact with the calibration center conductor during installation, potentially damaging the conductor and reducing its lifespan, this invention proposes a calibration device for a current probe.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a calibration device for a current probe, including a base, a support plate fixedly connected to the top of the base by bolts, a calibration center conductor fixedly installed on the inner side of the support plate, a placement plate fixedly connected to the top of the base by bolts, and a protective mechanism provided on the inner side of the support plate.

[0006] The protective mechanism includes a rotating rod, which is rotatably connected to the inner wall of the support plate via a damping shaft. A gear is fixedly mounted on the surface of the rotating rod. A sliding groove is formed on the surface of the support plate, and a support rod is slidably connected to the inner cavity of the sliding groove. A toothed plate is fixedly mounted on one end of the support rod, and a protective box is fixedly mounted on the other end of the support rod. The inner cavity of the protective box is used in conjunction with the surface of the calibration center conductor, and the teeth of the toothed plate and the gear mesh with each other.

[0007] Preferably, the inner wall of the sliding groove is provided with a guide groove, and a guide block is fixedly installed on the surface of the support rod, and the inner cavity of the guide groove is slidably connected to the surface of the guide block.

[0008] Preferably, a spring is fixedly installed on the inner wall of the placement plate, and an arc-shaped plate is fixedly installed on one end of the spring.

[0009] Preferably, a damping telescopic rod is fixedly installed on the inner wall of the placement plate, the telescopic end of the damping telescopic rod is fixedly connected to the surface of the arc-shaped plate, and the inner cavity of the spring is sleeved on the surface of the damping telescopic rod.

[0010] Preferably, a connecting plate is fixedly installed on the top of the base, and a docking plate is fixedly installed on the top of the connecting plate.

[0011] Preferably, the top of the support plate is provided with a docking groove, and the bottom of the placement plate is fixedly installed with a docking block, and the inner cavity of the docking groove is slidably connected to the surface of the docking block.

[0012] Preferably, a friction pad made of rubber is fixedly installed on the bottom of the base.

[0013] The advantages of this utility model are:

[0014] This invention features a protective mechanism. Through the meshing of gears and toothed plates, two toothed plates can be moved in opposite directions. The sliding connection between the support rod and the sliding groove allows the protective box to remove its obstruction of the calibration center conductor, thus ensuring the normal operation of the calibration center conductor. When the use is finished, rotating the rotating rod in the opposite direction closes the two protective boxes, placing the calibration center conductor in a closed space, thus protecting the calibration center conductor, preventing damage, and increasing its service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rotating rod, gear, and toothed plate of this utility model;

[0018] Figure 3 This is a cross-sectional view of the support plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the arc-shaped plate, spring, and damping telescopic rod of this utility model.

[0020] In the diagram: 1. Base; 2. Support plate; 3. Calibration center conductor; 4. Placement plate; 5. Protective mechanism; 501. Rotating rod; 502. Gear; 503. Sliding groove; 504. Support rod; 505. Toothed plate; 506. Protective box; 6. Guide groove; 7. Guide block; 8. Spring; 9. Arc plate; 10. Damping telescopic rod; 11. Connecting plate; 12. Butt plate; 13. Butt groove; 14. Butt block; 15. Friction pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a calibration device for a current probe. (Refer to...) Figures 1 to 4 A calibration device for a current probe includes a base 1, a support plate 2 fixedly connected to the top of the base 1 by bolts, a calibration center conductor 3 fixedly installed on the inner side of the support plate 2, a placement plate 4 fixedly connected to the top of the base 1 by bolts, and a protective mechanism 5 provided on the inner side of the support plate 2.

[0024] The protective mechanism 5 includes a rotating rod 501, which is rotatably connected to the inner wall of the support plate 2 via a damping shaft. A gear 502 is fixedly mounted on the surface of the rotating rod 501. A sliding groove 503 is formed on the surface of the support plate 2, and a support rod 504 is slidably connected to the inner cavity of the sliding groove 503. A toothed plate 505 is fixedly mounted on one end of the support rod 504, and a protective box 506 is fixedly mounted on the other end of the support rod 504. The inner cavity of the protective box 506 is used in conjunction with the surface of the calibration center conductor 3. The teeth of the toothed plate 505 and the gear 502 mesh with each other. By setting up the protective mechanism 5, the transmission... The meshing of gear 502 and toothed plate 505 drives the two toothed plates 505 to move in opposite directions. Through the sliding connection between support rod 504 and sliding groove 503, the protective box 506 removes the obstruction of the calibration center conductor 3, thereby ensuring the normal operation of the calibration center conductor 3. When the use is finished, rotating rod 501 in the opposite direction closes the two protective boxes 506, thereby placing the calibration center conductor 3 in a closed space, realizing the protection of the calibration center conductor 3, avoiding damage to the calibration center conductor 3, and increasing the service life of the calibration center conductor 3.

[0025] Reference Figure 3The inner wall of the sliding groove 503 is provided with a guide groove 6, and a guide block 7 is fixedly installed on the surface of the support rod 504. The inner cavity of the guide groove 6 is slidably connected to the surface of the guide block 7. Through the slidable connection between the guide groove 6 and the guide block 7, the movement of the support rod 504 can be guided, so that the support rod 504 can move up and down while remaining vertical.

[0026] Reference Figure 1 and Figure 4 A spring 8 is fixedly installed on the inner wall of the placement plate 4, and an arc plate 9 is fixedly installed on one end of the spring 8. By setting the spring 8 and the arc plate 9, the spring 8 has a large elastic coefficient. After the probe is inserted into the hole reserved in the placement plate 4, the arc plate 9 clamps the current probe, so that the current probe is in the center of the hole, thereby ensuring the stability of the measurement.

[0027] Reference Figure 4 A damping telescopic rod 10 is fixedly installed on the inner wall of the placement plate 4. The telescopic end of the damping telescopic rod 10 is fixedly connected to the surface of the arc plate 9. The inner cavity of the spring 8 is sleeved on the surface of the damping telescopic rod 10. By setting the damping telescopic rod 10, the damping force of the damping telescopic rod 10 can be used to prevent the spring 8 from shaking and increase the support capacity of the spring 8.

[0028] Reference Figure 1 and Figure 2 A connecting plate 11 is fixedly installed on the top of the base 1, and a docking plate 12 is fixedly installed on the top of the connecting plate 11. The connecting plate 11 can support the position of the docking plate 12, and the docking plate 12 can support the input and output interfaces of the calibration center conductor 3 to ensure the stability after docking.

[0029] Reference Figure 2 and Figure 4 The top of the support plate 2 is provided with a docking groove 13, and the bottom of the placement plate 4 is fixedly installed with a docking block 14. The inner cavity of the docking groove 13 is slidably connected to the surface of the docking block 14. Through the slidable connection between the docking block 14 and the docking groove 13, the installation of the placement plate 4 can be guided, ensuring the accurate installation of the placement plate 4.

[0030] Reference Figure 1 A friction pad 15 is fixedly installed on the bottom of the base 1. The friction pad 15 is made of rubber. By setting the friction pad 15, the friction between the base 1 and the contact surface can be increased, ensuring the stability of the equipment during operation.

[0031] Working Principle: The support plate 2 is fixed to the top of the base 1 with bolts, and the placement plate 4 is fixed to the top of the support plate 2 with bolts to complete the installation. The input interface of the calibration center conductor 3 receives a known accurate current signal as the calibration signal. The output interface of the calibration center conductor 3 is connected to a coaxial load device to output the signal processed by the calibration device, analyzing and verifying the calibration results. The input calibration signal generates a corresponding electromagnetic field in this conductor, providing a standard measurement environment for the current probe. The current probe is placed in the pre-drilled hole in the placement plate 4 and passes through the hole. The signal measured by the current probe is compared with the known input calibration signal. If the deviation is within the allowable error range, the current probe measurement is accurate. If the deviation exceeds the range, the current probe needs to be adjusted or repaired. The measurement results are correct until they meet the requirements. This is existing technology and will not be elaborated further. During use, rotating the rotating rod 501 drives the gear 502 to rotate. Through the meshing of the gear 502 and the toothed plate 505, the two toothed plates 505 can be moved in opposite directions. Through the sliding connection between the support rod 504 and the sliding groove 503, the protective box 506 can be removed from obstructing the calibration center conductor 3, thereby ensuring the normal operation of the calibration center conductor 3. Through the damping force of the damping shaft, the position of the protective box 506 is fixed to ensure the normal operation of the calibration center conductor 3. When the use is finished, rotating the rotating rod 501 in the opposite direction closes the two protective boxes 506, thereby placing the calibration center conductor 3 in a closed space, realizing the protection of the calibration center conductor 3 and avoiding damage to the calibration center conductor 3.

[0032] 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 claimed utility model.

Claims

1. A calibration device for a current probe, characterized in that: Includes a base (1), the top of the base (1) is fixedly connected to a support plate (2) by bolts, a calibration center conductor (3) is fixedly installed on the inner side of the support plate (2), a placement plate (4) is fixedly connected to the top of the base (1) by bolts, and a protective mechanism (5) is provided on the inner side of the support plate (2). The protective mechanism (5) includes a rotating rod (501), which is rotatably connected to the inner wall of the support plate (2) via a damping shaft. A gear (502) is fixedly installed on the surface of the rotating rod (501). A sliding groove (503) is provided on the surface of the support plate (2). A support rod (504) is slidably connected to the inner cavity of the sliding groove (503). A toothed plate (505) is fixedly installed at one end of the support rod (504). A protective box (506) is fixedly installed at the other end of the support rod (504). The inner cavity of the protective box (506) is used in conjunction with the surface of the calibration center conductor (3). The teeth of the toothed plate (505) and the gear (502) mesh with each other.

2. The calibration device for a current probe according to claim 1, characterized in that: The inner wall of the sliding groove (503) is provided with a guide groove (6), and a guide block (7) is fixedly installed on the surface of the support rod (504). The inner cavity of the guide groove (6) is slidably connected to the surface of the guide block (7).

3. The calibration device for a current probe according to claim 1, characterized in that: A spring (8) is fixedly installed on the inner wall of the placement plate (4), and an arc plate (9) is fixedly installed on one end of the spring (8).

4. The calibration device for a current probe according to claim 3, characterized in that: The inner wall of the placement plate (4) is fixedly installed with a damping telescopic rod (10), the telescopic end of the damping telescopic rod (10) is fixedly connected to the surface of the arc plate (9), and the inner cavity of the spring (8) is sleeved on the surface of the damping telescopic rod (10).

5. The calibration device for a current probe according to claim 1, characterized in that: A connecting plate (11) is fixedly installed on the top of the base (1), and a docking plate (12) is fixedly installed on the top of the connecting plate (11).

6. The calibration device for a current probe according to claim 1, characterized in that: The top of the support plate (2) is provided with a docking groove (13), and the bottom of the placement plate (4) is fixedly installed with a docking block (14). The inner cavity of the docking groove (13) is slidably connected to the surface of the docking block (14).

7. The calibration device for a current probe according to claim 1, characterized in that: A friction pad (15) is fixedly installed on the bottom of the base (1), and the friction pad (15) is made of rubber.

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