Current transformer detection operation table

By designing a current transformer testing platform with a sliding rod core and metal sleeve structure, the problems of conductive core rod wear and electrostatic contact were solved, achieving efficient and accurate current transformer testing, improving testing efficiency and accuracy, and ensuring the heat dissipation effect of the current transformer.

CN121805932APending Publication Date: 2026-04-07YIXING ZHONGRUI ELECTRONICS TECHNICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-15
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing current transformer testing equipment is prone to wear and electrostatic contact when the conductive core rod passes through the current transformer shaft, which affects the accuracy of the test and results in low testing efficiency.

Method used

A current transformer testing platform was designed, which adopts a sliding rod core and metal sleeve structure. By controlling the air pump, the sliding rod core is made to synchronously pass through the current transformer shaft to avoid contact wear. The cooling is achieved by air jet cutting groove. Combined with the adjustment base and clamping unit, fast and accurate testing is realized.

Benefits of technology

This technology enables efficient and accurate detection of current transformers, avoids contact wear and electrostatic contact between the conductive core rod and the current transformer shaft, improves detection efficiency and accuracy, and ensures the heat dissipation effect of the current transformer.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of current transformer detection, and particularly relates to a current transformer detection operation table which comprises an operation bottom table, and control buttons are evenly arranged on the front face of the operation bottom table. The transfer platform is arranged at the top of the operation bottom table; and the clamping units are uniformly arranged in the switching platform, and current transformers are arranged in the clamping units. The device can measure most current transformers at a time, so that the detection efficiency of the current transformers is improved, a metal rod penetrating through the axes of all the current transformers is quickly assembled, an electrified loop passes through the current transformers, and the sliding rod core is directly inserted into the axis positions of the current transformers and cannot be in contact with the current transformers, so that the detection accuracy is improved. Therefore, the problem of contact abrasion between the conductive core rod and the axis part of the current transformer when the conductive core rod passes through the current transformer every time is solved, and the problem of inaccurate test caused by static electricity generated by contact slippage of the conductive core rod of the current transformer is also solved.
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Description

Technical Field

[0001] This invention belongs to the field of current transformer testing technology, specifically a current transformer testing operating platform. Background Technology

[0002] A current transformer consists of a closed iron core and windings. Its function is to transform the high voltage and large current of the primary circuit into the standard low voltage and small current of the secondary circuit. During the manufacturing process, current transformers undergo testing.

[0003] An existing current transformer testing platform (publication number CN214669549U) can measure multiple current transformers simultaneously, thereby improving the detection efficiency of current transformers. However, this device uses a single, independent conductive core rod. After setting up the current transformer, the conductive core rod needs to be manually inserted through the shaft of the current transformer sequentially. Manual operation prevents the conductive core rod from passing through the current transformer in one go, resulting in contact wear between the conductive core rod and the shaft of the current transformer each time it passes through. The current transformer may also generate static electricity due to contact slippage of the conductive core rod, leading to inaccurate testing. Therefore, improvements are needed. Summary of the Invention

[0004] To address the inconvenience of using existing conductive core rods, the technical solution adopted in this invention is: a current transformer testing operating platform, comprising: An operating platform, on the front of which control buttons are evenly arranged; The transfer platform is located on top of the operating platform; The clamping units are evenly arranged inside the transfer platform, and a current transformer is installed inside the clamping unit. The connecting units are evenly distributed on the top of the transfer platform; The connection unit includes: A metal sleeve, wherein through-holes are symmetrically provided at the axial centers of both ends of the metal sleeve; The sliding rod cores are symmetrically arranged on both sides of the inner wall of the metal sleeve, and the top of the sliding rod cores extends to the outside of the metal sleeve through the through-hole. The inner cavity of the sliding rod cores is provided with an air inlet. The sliding rod cores on the left and right sides of the metal sleeve are arranged in pairs. The end of the right sliding rod core is a concave structure, and the end of the left sliding rod core is a convex structure. When adjacent connecting units are connected, their concave structure and convex structure are connected to form a stable rod body. A connecting spring is provided, the outer surface of which is slidably connected to the inner wall of the metal sleeve, and both ends of the connecting spring are respectively inserted into the outer surfaces of the left and right sliding rod cores.

[0005] Furthermore, the connection unit also includes: A spring sleeve, wherein the inner wall of the spring sleeve is sleeved with the outer surface of the sliding rod core near the side connected to the spring; A control air pump, the bottom of which is inserted into the upper surface of the transfer platform; The adjustable pitch pipe has its bottom outer surface slidably connected to the inner wall of the control air pump, and its top end inserted into the bottom of the inner cavity of the metal sleeve. The control air pump is connected to the inner cavity of the metal sleeve through the adjustable pitch pipe. The control air pump can pressurize the inside of the metal sleeve through the hollow adjustable pitch pipe, thereby pushing the sliding rod cores on both sides to slide outward. When all the control air pumps work synchronously to fully push out the sliding rod cores, the rod body composed of the sliding rod cores and the metal sleeve is connected to form a long metal rod that passes through the axis of the current transformer.

[0006] Furthermore, the connection unit also includes: A sliding sleeve has air-jet cutting grooves evenly distributed on its outer surface. A receiving groove is provided on the side of the inner cavity of the sliding rod core away from the connecting spring. The outer surface of the sliding sleeve is slidably connected to the inner cavity of the sliding rod core through the receiving groove. After the sliding sleeve slides to the outside of the sliding rod core, its air-jet cutting grooves will be exposed to the outside of the sliding rod core, thereby achieving a pressure reduction effect inside the metal sleeve. The shrinkage pad is fitted onto the bottom of the outer surface of the sliding sleeve, and the outer surface of the shrinkage pad is inserted into the inner cavity of the sliding rod core through the receiving groove. After the sliding sleeve slides outward to the sliding rod core, the shrinkage pad fitted onto it will be compressed. Thus, after the pressure is reduced inside the metal sleeve, the sliding sleeve is pulled back into the receiving groove by its own elastic force.

[0007] Furthermore, the switching platform includes: A support platform, the lower surface of which is inserted into the upper surface of the operating platform; The long display screen is set on the front of the support platform, and transmission guide rods are evenly inserted on the back of the long display screen. The power supply components are symmetrically arranged on the left and right sides of the inner wall of the support platform, and the top of the power supply components is slidably connected with a positioning guide rod.

[0008] Furthermore, the clamping unit includes: An adjustment base, the top of which extends through a slot to the outside of the support platform; A limiting component is disposed on the top of the adjusting base; Modified clamping plates are symmetrically arranged on both sides of the upper part of the limiting component to directly clamp the current transformer.

[0009] Furthermore, the adjusting base includes: The lower surface of the electrical signal box is fixedly connected to the bottom of the inner wall of the support platform, and a docking port is provided at the front of the inner cavity of the electrical signal box. The front end of the electrical signal box is connected to the end of the transmission guide rod away from the long display screen through the docking port.

[0010] Furthermore, the adjusting base also includes: Side-pressurized boxes are symmetrically arranged on the left and right sides of the outer surface of the electrical signal box; A hollow pad, the lower surface of which is snapped into the upper surface of the electrical signal box; The air cushion connecting tube has its bottom end inserted into the inner cavity of the hollow pad through a through-hole, and the top of the side pressure box is inserted into the side of the hollow pad through a connecting plate. After the side pressure box inflates the inside of the hollow pad, the air cushion connecting tubes around it will expand and elongate, thereby pushing the limiting component upward.

[0011] Furthermore, the limiting component includes: The container battery board has its lower surface inserted into the top of the air cushion connecting cylinder, and control elements are evenly arranged on its upper surface. The snap-fit ​​pillow plates are symmetrically arranged on the left and right sides of the upper surface of the container battery plate; A rotating shaft is rotatably connected to the top of the inner cavity of the snap-fit ​​pillow plate, and control motors are inserted at both ends of the rotating shaft. The outer surface of the control motor is connected to the inner cavity of the control element through wires. The control element can drive the rotating shaft to deflect by controlling the motor.

[0012] Furthermore, the limiting component also includes: An independent guide plate, the lower surface of which is snapped into the middle of the upper surface of the containerized electric plate; A sliding wire, the bottom end of which is slidably connected to the inner cavity of an independent guide plate, and the lower surface of the independent guide plate is inserted into the inner cavity of the electrical signal box through a through rod.

[0013] Furthermore, the modified clamp includes: A deflection clamp, the bottom of which is inserted into the outer surface of the rotating shaft, and the inner cavity of the deflection clamp is uniformly provided with guide grooves; An arc-shaped baffle, the outer surface of which is inserted into the inner cavity of a deflection clamp via a guide groove; Connecting gaskets are evenly distributed in the inner cavity of the arc-shaped baffle. The top of the connecting gasket is inserted into the inner cavity of the current transformer, and the bottom of the connecting gasket is inserted into the top of the sliding wire. A buffer spring band is installed inside the guide groove, and the bottom end of the buffer spring band is inserted into the outer surface of the arc-shaped baffle.

[0014] The beneficial effects of this invention are as follows: 1. This device can measure multiple current transformers at once, thereby improving the detection efficiency of current transformers. After the current transformers are set up, the control air pump is started synchronously to eject all the sliding rod cores from inside the metal sleeve, thus quickly assembling a metal rod that runs through the shaft of all current transformers. This allows the energized circuit to pass through the current transformers, achieving the testing effect. Since the sliding rod core is directly inserted into the shaft of the current transformer and does not contact the current transformer, there is no problem of contact wear between the conductive core and the shaft of the current transformer every time it passes through. The current transformer will also not generate static electricity due to contact slippage of the conductive core, which would lead to inaccurate testing.

[0015] 2. The conductive core of this device is quickly assembled using positioning guide rods on both sides, as well as all the metal sleeves and sliding rod cores. Therefore, the insertion speed is faster and the accuracy is higher. After the current transformer has been tested, the restriction on the current transformer can be released by quickly retracting the sliding rod core, thus making it easy to remove the current transformer. This not only makes it more convenient to use, but also ensures that the rod is always placed on the transfer platform and will not move around at will. This effectively avoids the problem that the rod may be easily deformed due to bumps and knocks during frequent handling, thus preventing it from passing straight through the current transformer.

[0016] 3. During normal use, the current transformer does not operate with a large area covered by the clamping unit. Therefore, the actual heat dissipation of the current transformer is poor when using this device for measurement. To meet actual needs, the groove of the sliding sleeve releases pressure and exhausts gas outward during testing. On the one hand, this keeps the sliding rod core firmly connected while preventing the metal sleeve from cracking due to internal high pressure. On the other hand, the outflowing gas directly acts on the inner wall of the current transformer to cool it down, thereby solving the problem of poor heat dissipation of the current transformer.

[0017] 4. The adjustable base can be adjusted according to the actual size of the current transformer being tested, so that the axis of the clamped current transformer is aligned with the axis of the metal sleeve. This enhances the versatility of the device and meets actual usage requirements. When the sliding sleeve blows air onto the current transformer, buffer springs are installed on both sides to dampen the vibration of the current transformer and prevent it from vibrating. Attached Figure Description

[0018] Figure 1 This is the front view of the present invention; Figure 2 This is a cross-sectional view of the support platform of the present invention; Figure 3 This is a cross-sectional view of the metal sleeve of the present invention; Figure 4 This is the present invention. Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the clamping unit of the present invention; Figure 6 This is a schematic diagram of the structure of the adjustment base of the present invention; Figure 7 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 8 This is a schematic diagram of the modified clamping plate of the present invention.

[0019] In the diagram: 1. Operating platform; 2. Transfer platform; 3. Clamping unit; 4. Connecting unit; 5. Current transformer; 41. Control air pump; 42. Adjustable gap pipe; 43. Metal sleeve; 44. Connecting spring; 45. Sliding rod core; 46. Air inlet; 47. Spring sleeve; 48. Receiving groove; 49. Sliding sleeve; 410. Shrinkage pad; 21. Support plate; 22. Transmission guide rod; 23. Long display screen; 24. Power supply component; 25. Positioning guide rod; 31. Adjustment... 32. Base; 33. Limiting component; 34. Modified clamping plate; 35. Electrical signal box; 36. Connecting socket; 37. Side pressure box; 38. Hollow pad; 39. Air cushion connecting tube; 30. Containerized electrical board; 31. Control element; 32. Snap-fit ​​pillow plate; 32. Rotating shaft; 33. Control motor; 34. Independent guide plate; 35. Sliding wire; 36. Deflection clamping plate; 37. Buffer spring belt; 38. Arc-shaped baffle; 39. Connecting gasket. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0021] Example 1, please refer to Figures 1-4 The present invention provides a technical solution: a current transformer testing operating platform, comprising: Operating base 1, with control buttons evenly arranged on the front of the operating base 1; The transfer platform 2 is located on top of the operating platform 1; Clamping units 3 are evenly arranged inside the transfer platform 2, and current transformers 5 are installed inside clamping units 3; The connecting units 4 are evenly distributed on the top of the transfer platform 2; Connection unit 4 includes: Metal sleeve 43, with through-holes symmetrically opened at the axis at both ends of the metal sleeve 43; The sliding rod core 45 is symmetrically arranged on both sides of the inner wall of the metal sleeve 43, and the top of the sliding rod core 45 extends to the outside of the metal sleeve 43 through the through-hole. The inner cavity of the sliding rod core 45 is provided with an air inlet 46. The sliding rod cores 45 on the left and right sides of the metal sleeve 43 are arranged in pairs. The end of the right sliding rod core 45 is a concave structure, and the end of the left sliding rod core 45 is a convex structure. When adjacent connecting units 4 are connected, their concave structure and convex structure are connected to form a stable rod body. A connecting spring 44 is provided, the outer surface of which is slidably connected to the inner wall of the metal sleeve 43, and the two ends of the connecting spring 44 are respectively inserted into the outer surfaces of the left and right sliding rod cores 45.

[0022] Connection unit 4 also includes: Spring sleeve 47, the inner wall of spring sleeve 47 is sleeved with the outer surface of sliding rod core 45 near the side of connecting spring 44; Control air pump 41, the bottom of control air pump 41 is inserted into the upper surface of transfer platform 2; The adjustable pitch pipe 42 has its bottom outer surface slidably connected to the inner wall of the control air pump 41, and its top end is inserted into the bottom of the inner cavity of the metal sleeve 43. The control air pump 41 is connected to the inner cavity of the metal sleeve 43 through the adjustable pitch pipe 42. The control air pump 41 can pressurize the inside of the metal sleeve 43 through the hollow adjustable pitch pipe 42, thereby pushing the sliding rod cores 45 on both sides to slide outward. When all the control air pumps 41 work synchronously to fully push out the sliding rod cores 45, the sliding rod cores 45 and the metal sleeve 43 together form a long metal rod that passes through the axis of the current transformer 5.

[0023] Connection unit 4 also includes: The sliding sleeve 49 has air-jet cutting grooves evenly distributed on its outer surface. The inner cavity of the sliding rod core 45 has a receiving groove 48 on the side away from the connecting spring 44. The outer surface of the sliding sleeve 49 is slidably connected to the inner cavity of the sliding rod core 45 through the receiving groove 48. After the sliding sleeve 49 slides to the outside of the sliding rod core 45, its air-jet cutting grooves will be exposed to the outside of the sliding rod core 45, thereby achieving a pressure reduction effect inside the metal sleeve 43. The shrinkage pad 410 is sleeved on the bottom of the outer surface of the sliding sleeve 49, and the outer surface of the shrinkage pad 410 is inserted into the inner cavity of the sliding rod core 45 through the receiving groove 48. After the sliding sleeve 49 slides to the outside of the sliding rod core 45, the shrinkage pad 410 sleeved on it will be compressed. After the pressure is reduced inside the metal sleeve 43, the sliding sleeve 49 will be pulled back into the receiving groove 48 by its own elastic force.

[0024] Before using this device to test the current transformer 5, the array of current transformers 5 needs to be fixed in each clamping unit 3. Then, all the control air pumps 41 are started synchronously through the operating platform 1. At this time, the control air pumps 41 pressurize the inside of the metal sleeve 43 through the pitch pipe 42. The sliding rod cores 45 on both sides slide out from the inside of the metal sleeve 43 first. Then, the adjacent sliding rod cores 45 are connected at the axis of the current transformer 5. The sliding rod cores 45 at the left and right ends are connected to the positioning guide rods 25 on the left and right sides respectively. At this time, the power supply component 24, the positioning guide rods 25, the metal sleeve 43 and the sliding rod cores 45 form a series circuit. After the rod is energized, its working performance is tested by observing the reading meter on the top of the current transformer 5.

[0025] During testing, the sliding rod core 45 remains fixed against the wall, but the control air pump 41 continues to pressurize. At this time, the air pressure enters the cavity 48 through the air inlet 46, pushing all the sliding sleeves 49 outward. Then, the air is released and vented through the grooves of the sliding sleeves 49. Since the sliding sleeves 49 are located at the axis of the current transformer 5, the gas directly acts on the inner wall of the current transformer 5 to cool it down. This ensures that the current transformer 5 does not experience heat dissipation problems when it is clamped by the clamping unit 3 for long-term testing.

[0026] Example 2, please refer to Figures 1-8 The present invention provides a technical solution: based on embodiment 1, the transfer platform 2 includes: Support plate 21, the lower surface of support plate 21 is inserted into the upper surface of operating base 1; The long display screen 23 is set on the front of the support platform 21, and transmission guide rods 22 are evenly inserted on the back of the long display screen 23. The power supply components 24 are symmetrically arranged on the left and right sides of the inner wall of the support platform 21, and the top of the power supply components 24 is slidably connected to the positioning guide rod 25.

[0027] Clamping unit 3 includes: The top of the adjustment base 31 extends to the outside of the support plate 21 through a slot. Limiting component 32 is disposed on the top of the adjusting base 31; Modified clamping plates 33 are symmetrically arranged on both sides of the upper part of the limiting component 32 for directly clamping the current transformer 5.

[0028] The adjustment base 31 includes: The lower surface of the electrical signal box 311 is fixedly connected to the bottom of the inner wall of the support platform 21, and the front of the inner cavity of the electrical signal box 311 is provided with a docking port 312. The front end of the electrical signal box 311 is connected to the end of the transmission guide rod 22 away from the long display screen 23 through the docking port 312.

[0029] The adjustment base 31 also includes: The side pressure box 313 is symmetrically arranged on the left and right sides of the outer surface of the electrical signal box 311; Hollow pad 314, the lower surface of hollow pad 314 is snapped into the upper surface of electrical signal box 311; The bottom end of the air cushion connecting cylinder 315 is inserted into the inner cavity of the hollow pad plate 314 through a through-hole. The top of the side pressure box 313 is inserted into the side of the hollow pad plate 314 through a connecting plate. After the side pressure box 313 inflates the inside of the hollow pad plate 314, the air cushion connecting cylinder 315 around it will expand and elongate, thereby pushing the limiting component 32 upward.

[0030] The limiting component 32 includes: The lower surface of the container electric plate 321 is inserted into the top of the air cushion connecting cylinder 315, and the upper surface of the container electric plate 321 is uniformly provided with control elements 322. The snap-fit ​​pillow plate 323 is symmetrically arranged on the left and right sides of the upper surface of the container electric plate 321; Rotary shaft 324 is rotatably connected to the top of the inner cavity of the snap-fit ​​pillow plate 323. Both ends of the rotating shaft 324 are connected to control motors 325. The outer surface of the control motors 325 is connected to the inner cavity of the control element 322 through wires. The control element 322 can drive the rotating shaft 324 to deflect by controlling the motors 325.

[0031] The limiting component 32 also includes: Independent guide plate 326, the lower surface of independent guide plate 326 is snapped into the middle of the upper surface of the packaged electrical plate 321; The sliding wire 327 has its bottom end slidably connected to the inner cavity of the independent guide plate 326, and the lower surface of the independent guide plate 326 is inserted into the inner cavity of the electrical signal box 311 through a through rod.

[0032] Modified clamp 33 includes: The deflection clamp 331 is inserted into the outer surface of the rotating shaft 324 at its bottom, and the inner cavity of the deflection clamp 331 is uniformly provided with guide grooves. The outer surface of the arc-shaped baffle 333 is inserted into the inner cavity of the deflection clamp 331 through a guide groove. Connecting pads 334 are evenly distributed in the inner cavity of the arc-shaped baffle 333. The top of the connecting pads 334 is inserted into the inner cavity of the current transformer 5, and the bottom of the connecting pads 334 is inserted into the top of the sliding wire 327. The buffer spring band 332 is disposed inside the guide groove, and the bottom end of the buffer spring band 332 is inserted into the outer surface of the arc-shaped baffle 333.

[0033] The adjustment base 31 can adjust the actual height of the top limiting component 32 according to the actual size of the current transformer 5 being tested, so that the axis of the clamped current transformer 5 is aligned with the axis of the metal sleeve 43. After the side pressure boxes 313 pressurize the hollow pad 314, the air cushion connecting cylinder 315 will expand and elongate due to the internal pressure, thereby pushing the limiting component 32 upward and raising the final fixed position of the current transformer 5. Alternatively, the final fixed position of the current transformer 5 can be lowered by the side pressure boxes 313 pressing the hollow pad 314.

[0034] When the current transformer 5 is vertically placed inside the limiting component 32, the control motors 325 on both sides drive the deflection clamp 331 to clamp the bottom of the current transformer 5 through the rotating shaft 324, thereby fixing the current transformer 5. The deflection clamp 331 will support the bottom of the current transformer 5 through the arc-shaped baffle 333 on its side to achieve the effect of bearing the weight. The connecting gasket 334 embedded in the arc-shaped baffle 333 is connected to the current transformer 5 and can be fed back to the long display screen 23 in front through the independent guide plate 326, so that the operator can observe and compare the parameters of each current transformer 5. When the sliding sleeve 49 blows air into the current transformer 5, in order to avoid the current transformer 5 from vibrating, buffer spring bands 332 are set on both sides to dampen the vibration of the current transformer 5. Since the elastic coefficient of the buffer spring band 332 is small, after the current transformer 5 presses down on the arc-shaped baffle 333, the buffer spring band 332 can be stretched to its longest state, such as Figure 8 As shown, the elastic force of the buffer spring belt 332 will not affect the actual height of the current transformer 5.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A current transformer testing operating platform, comprising: Operating base (1), with control buttons evenly arranged on the front side of the operating base (1); The transfer platform (2) is set on top of the operating platform (1); The clamping unit (3) is evenly arranged inside the transfer platform (2), and a current transformer (5) is provided inside the clamping unit (3). The connecting units (4) are evenly arranged on the top of the transfer platform (2); The characteristic is that the connecting unit (4) includes: Metal sleeve (43), with through-holes symmetrically opened at the axial center of both ends of the metal sleeve (43); The sliding rod core (45) is symmetrically arranged on both sides of the inner wall of the metal sleeve (43), and the top of the sliding rod core (45) extends to the outside of the metal sleeve (43) through the through-hole. The inner cavity of the sliding rod core (45) is provided with an air inlet (46). A connecting spring (44) is provided, the outer surface of which is slidably connected to the inner wall of the metal sleeve (43), and the two ends of the connecting spring (44) are respectively inserted into the outer surfaces of the left and right sliding rod cores (45).

2. The current transformer testing operating platform according to claim 1, characterized in that: The connection unit (4) further includes: Spring sleeve (47), the inner wall of which is sleeved with the outer surface of the sliding rod core (45) near the side of the connecting spring (44); Control air pump (41), the bottom of which is inserted into the upper surface of the transfer platform (2); The bottom of the outer surface of the adjustable pipe (42) is slidably connected to the inner wall of the control air pump (41), the top end of the adjustable pipe (42) is inserted into the bottom of the inner cavity of the metal sleeve (43), and the control air pump (41) is connected to the inner cavity of the metal sleeve (43) through the adjustable pipe (42).

3. The current transformer testing operating platform according to claim 2, characterized in that: The connection unit (4) further includes: The sliding sleeve (49) has uniformly opened air-jet cutting grooves on its outer surface, and the inner cavity of the sliding rod core (45) has a receiving groove (48) on the side away from the connecting spring (44), and the outer surface of the sliding sleeve (49) is slidably connected to the inner cavity of the sliding rod core (45) through the receiving groove (48). The shrinkage pad (410) is fitted onto the bottom of the outer surface of the sliding sleeve (49), and the outer surface of the shrinkage pad (410) is inserted into the inner cavity of the sliding rod core (45) through the receiving groove (48).

4. The current transformer testing operating platform according to claim 1, characterized in that: The switching platform (2) includes: Support plate (21), the lower surface of which is inserted into the upper surface of the operating base (1); A long display screen (23) is set on the front of the support platform (21), and transmission guide rods (22) are evenly inserted on the back of the long display screen (23). The power supply component (24) is symmetrically arranged on the left and right sides of the inner wall of the support plate (21), and the top of the power supply component (24) is slidably connected to the positioning guide rod (25).

5. The current transformer testing operating platform according to claim 4, characterized in that: The clamping unit (3) includes: Adjustment base (31), the top of which extends through a slot to the outside of the support plate (21); A limiting component (32) is disposed on the top of the adjusting base (31); Modified clamps (33) are symmetrically arranged on both sides of the upper part of the limiting component (32) for directly clamping the current transformer (5).

6. The current transformer testing operating platform according to claim 5, characterized in that: The adjustment base (31) includes: The lower surface of the electrical signal box (311) is fixedly connected to the bottom of the inner wall of the support plate (21), and the front of the inner cavity of the electrical signal box (311) is provided with a docking port (312). The front end of the electrical signal box (311) is connected to the end of the transmission guide rod (22) away from the long display screen (23) through the docking port (312).

7. The current transformer testing operating platform according to claim 6, characterized in that: The adjustment base (31) also includes: The side pressure box (313) is symmetrically arranged on the left and right sides of the outer surface of the electrical signal box (311); Hollow pad (314), the lower surface of which is snapped into the upper surface of the electrical signal box (311); The bottom end of the air cushion connecting tube (315) is inserted into the inner cavity of the hollow pad plate (314) through a through hole, and the top of the side pressure box (313) is inserted into the side of the hollow pad plate (314) through a connecting plate.

8. The current transformer testing operating platform according to claim 7, characterized in that: The limiting component (32) includes: The lower surface of the container electric plate (321) is inserted into the top of the air cushion connecting cylinder (315), and the upper surface of the container electric plate (321) is uniformly provided with control elements (322). The snap-fit ​​pillow plate (323) is symmetrically arranged on the left and right sides of the upper surface of the container electric plate (321); Rotary shaft (324) is rotatably connected to the top of the inner cavity of the snap-fit ​​pillow plate (323), and control motors (325) are inserted at both ends of the rotating shaft (324). The outer surface of the control motor (325) is connected to the inner cavity of the control element (322) through wires.

9. The current transformer testing operating platform according to claim 8, characterized in that: The limiting component (32) also includes: Independent guide plate (326), the lower surface of which is snapped into the middle of the upper surface of the packaged electrical plate (321); A sliding wire (327) is slidably connected to the inner cavity of an independent guide plate (326) at its bottom end, and the lower surface of the independent guide plate (326) is inserted into the inner cavity of an electrical signal box (311) through a through rod.

10. The current transformer testing operating platform according to claim 9, characterized in that: The modified clamp (33) includes: The deflection clamp (331) is inserted into the outer surface of the rotating shaft (324) at its bottom, and the inner cavity of the deflection clamp (331) is uniformly provided with guide grooves. An arc-shaped baffle (333) has its outer surface inserted into the inner cavity of a deflection clamp (331) via a guide groove. Connecting pads (334) are evenly arranged in the inner cavity of the arc-shaped baffle (333). The top of the connecting pads (334) is inserted into the inner cavity of the current transformer (5), and the bottom of the connecting pads (334) is inserted into the top of the sliding wire (327). A buffer spring band (332) is disposed inside the guide groove, and the bottom end of the buffer spring band (332) is inserted into the outer surface of the arc-shaped baffle (333).