Open-close type traveling wave distance measurement current transformer

Abstract

The invention relates to the technical field of transformers, in particular to an open-close type traveling wave distance measurement current transformer which comprises a fixed lower portion and an open-close upper portion and further comprises a hinged sliding way and an elastic pressing rotating shaft. The hinge slide way comprises a hinge base, a sliding rail and a guide conical groove. The front portion and the rear portion of the inner wall of the sliding rail are each provided with a hinge blind hole. The elastic pressing rotating shaft comprises an elastic pressing foundation arranged on the right side of the opening and closing upper portion, a rotating shaft assembly capable of automatically popping up is arranged in the elastic pressing foundation, the front portion and the rear portion of the rotating shaft assembly are in rotating fit with the corresponding hinge blind holes respectively, and the rotating shaft assembly comprises a rotating shaft main cavity, a telescopic assembly and a reset compression spring. According to the open-close type traveling wave distance measurement current transformer, the fixed lower portion and the open-close upper portion can be completely arranged in a split mode, and when any one of the fixed lower portion and the open-close upper portion is damaged, rapid replacement can be conducted; the open-close type traveling wave distance measurement current transformer is convenient to disassemble and assemble.

Description

Technical Field

[0001] This application relates to the technical field of current transformers, and particularly to an opening and closing type traveling wave ranging current transformer. Background Art

[0002] When a power transmission line fails, high-frequency transient current traveling waves will be generated. The core task of a current transformer is to accurately detect these high-frequency signals and provide original data for subsequent fault location. There are already integrated traveling wave ranging devices in the prior art, which at least include an opening and closing type outer shell for sleeving on a power transmission line and a current transformer arranged inside the outer shell. Usually, the current transformer is also of a hinged structure. In actual use, the following problems exist in the two mutually hinged parts of the hinged current transformer: when one part is damaged and fails, the other part can only be discarded. Even if the hinged mechanism is disassembled and replaced, it is very difficult to ensure the concentricity of the two parts, reducing the measurement accuracy. Summary of the Invention

[0003] An opening and closing type traveling wave ranging current transformer includes a fixed lower part and an opening and closing upper part, and further includes: A hinged slideway, including a hinged base arranged on the right side of the fixed lower part, a sliding track arranged above the right side of the hinged base, a guiding conical groove that gradually widens from top to bottom arranged below the sliding track, and a hinged blind hole respectively arranged on the front and rear inner walls of the sliding track; A spring-loaded rotating shaft, including a spring-loaded base arranged on the right side of the opening and closing upper part, and a rotating shaft assembly that automatically pops out arranged inside the spring-loaded base, and the front and rear of the rotating shaft assembly are respectively rotationally matched with the corresponding hinged blind holes.

[0004] As a further implementation: The rotating shaft assembly includes a rotating shaft main cavity, a telescopic assembly, and a reset compression spring; The rotating shaft main cavity includes a through channel arranged below the spring-loaded base along the front and rear directions, a wide-diameter circular cavity arranged in the middle of the through channel, a rotation-stopping insertion rod arranged above the wide-diameter circular cavity, a limiting plug respectively arranged on the front and rear inner walls of the through channel, a swing arm circular cavity arranged in the second half of the through channel, a connecting middle cavity arranged behind the swing arm circular cavity, a worm gear circular cavity arranged behind the connecting middle cavity, and a lead screw channel communicated and arranged above the worm gear circular cavity; There are a pair of telescopic assemblies, and a telescopic assembly is respectively arranged at the front and rear of the through channel. The telescopic assembly includes a sliding shaft body slidably arranged in the through channel, a limiting shaft groove arranged on the outer wall of the sliding shaft body and inserted and matched with the limiting plug, and a spring guide rod arranged inside the sliding shaft body; The reset compression spring is arranged in the through channel and drives the pair of telescopic assemblies to move away from each other. There are a pair of reset compression springs, and a reset compression spring is respectively arranged on the spring guide rod of each telescopic assembly; The rotating shaft assembly also includes a resistance adjusting device, which includes a rotating component, a spring baffle, an adjusting main cavity, and an adjusting rod body; The rotating assembly comprises an internally threaded tube rotatably arranged in the wide-diameter circular cavity and a driven gear arranged on the outer wall of the internally threaded tube; The spring baffle comprises an external threaded ring threadedly connected to the internal threaded tube and sleeved on the spring guide rod, and a rotation-stopping through hole provided on the external threaded ring and plugged with the rotation-stopping plug rod. The spring baffle is provided with a pair of springs respectively located on the inner sides of the corresponding return compression springs. The adjusting main cavity comprises an adjusting upper cavity arranged above the spring-pressing base and connected to the wide-diameter circular cavity, an adjusting through hole arranged in front of the adjusting upper cavity, a locking circular cavity arranged in the middle of the adjusting through hole, and a fixed locking tooth arranged in front of the inner wall of the locking circular cavity; The adjusting rod body includes a driving gear rotatably arranged in the adjusting upper cavity and cooperating with the driven gear, a gear through hole arranged in the driving gear, and a transmission plug rod arranged on the inner wall of the gear through hole. The adjusting rod body also includes an adjusting mandrel arranged in the adjusting through hole. The adjusting mandrel is inserted into the gear through hole and is provided with a sliding through hole for accommodating the transmission plug rod. A sliding lock disk is also provided at the outer wall of the adjusting mandrel corresponding to the locking circular cavity. A resistance adjustment pressure spring is also provided on the outer wall of the adjusting mandrel. The resistance adjustment pressure spring is arranged in the locking circular cavity behind the sliding lock disk.

[0005] Further: A semicircular convex block is provided on the inner side of each telescopic assembly, and a transmission key slot is provided on the upper front end of the telescopic assembly located at the rear; The rotating shaft assembly also includes an anti-retraction device, which includes a self-resetting disc, a swing arm chamber, and a trigger swing arm; The self-resetting disc body includes a driving screw rotatably arranged in the screw channel, an annular worm wheel rotatably arranged in the worm wheel circular cavity and connected to the driving screw, a rotating ring rotatably arranged in the swing arm circular cavity, and a transmission key arranged on the inner wall of the rotating ring and plugged into the transmission key groove. A torsion spring is also arranged in the connecting middle cavity, one end of the torsion spring is connected to the annular worm wheel and the other end is connected to the rotating ring; The swing arm chamber comprises a swing arm main chamber arranged on the left side of the spring-pressing base and connected to the swing arm circular chamber, and a swing arm opening arranged below the swing arm main chamber; The trigger swing arm comprises a swing arm body arranged on the left side of the rotating ring, and a swing arm contact arranged at the lower end of the swing arm body and passing through the swing arm opening.

[0006] Beneficial effects: An opening and closing type traveling wave ranging current transformer described in this case, the fixed lower part and the opening and closing upper part can be completely separated, which means that when any of the above two parts is damaged, it can be quickly replaced.

[0007] The opening and closing type traveling wave ranging current transformer described in this case is convenient for disassembly and assembly: push the opening and closing upper part, press and hold the rotating shaft so that it moves upward along the guiding tapered groove and the sliding track; the guiding tapered groove gradually narrows in the front-rear direction and then squeezes a pair of telescopic components to contract until the telescopic components are aligned with the hinged blind hole and then pop out and reset.

[0008] For an opening and closing type traveling wave ranging current transformer described in this case, the resistance adjusting device can synchronously adjust the compression amount and damping of a pair of reset compression springs under normal conditions, and adjust the damping of a pair of rotating shaft assemblies when they retract under pressure and the rate of popping out when the pressure is lost.

[0009] For an opening and closing type traveling wave ranging current transformer described in this case, the anti-retraction device is used to prevent a pair of telescopic components from loosening and locking back when the reset compression spring fails, resulting in the failure of the hinged connection relationship between the spring-loaded rotating shaft and the hinged blind hole, so that the fixed upper part and the opening and closing lower part cannot be tightly closed, affecting the measurement result. Description of the Drawings

[0010] Figure 1 It is a schematic diagram of a state of the opening and closing type traveling wave ranging current transformer.

[0011] Figure 2 It is a schematic diagram of another state of the opening and closing type traveling wave ranging current transformer.

[0012] Figure 3 It is a schematic diagram of an embodiment of the fixed lower part.

[0013] Figure 4 It is a schematic diagram of an embodiment of the opening and closing upper part.

[0014] Figure 5 It is a front view of an embodiment of the opening and closing upper part.

[0015] Figure 6 It is Figure 5 A sectional view taken along the A-A section in

[0016] Figure 7 It is Figure 5 A partial sectional view of the first state of the A-A section in

[0017] Figure 8 It is Figure 5 A partial sectional view of the second state of the A-A section in

[0018] Figure 9 It is Figure 5Partial sectional view of the third state of the A-A section in [the figure].

[0019] Figure 10 is Figure 6 Partial sectional view of an embodiment of the B-B section in [the figure].

[0020] Figure 11 Is a sectional view of an embodiment of the spring-loaded base and the main shaft cavity.

[0021] Figure 12 Is a schematic diagram of an embodiment of the telescopic assembly.

[0022] In the figure: 9. Fixed lower part; 8. Openable upper part; 7. Hinge slideway, 71. Hinge base, 72. Sliding track, 73. Guiding conical groove, 74. Hinge blind hole, 75. Disassembly fine hole, 76. Guiding sinking groove; 6. Spring-loaded rotating shaft, 61. Spring-loaded base, 62. Rotating shaft assembly; 1. Main shaft cavity, 11. Through channel, 12. Wide-diameter circular cavity, 13. Anti-rotation inserting rod, 14. Limit plug, 15. Swing arm circular cavity, 16. Connecting middle cavity, 17. Worm gear circular cavity, 18. Lead screw channel; 2. Telescopic assembly, 21. Sliding shaft body, 22. Limit shaft groove, 23. Spring guide rod, 24. Semi-circular convex block, 25. Transmission key groove; 3. Reset compression spring; 4. Resistance adjustment device; 41. Rotating assembly, 411. Internal thread tube, 412. Driven gear; 42. Spring baffle, 421. External thread ring, 422. Anti-rotation through hole; 43. Adjustment total cavity, 431. Adjustment upper cavity, 432. Adjustment through hole, 433. Locking circular cavity, 434. Fixed locking teeth; 44. Adjustment rod body, 441. Driving gear, 442. Gear through hole, 443. Transmission inserting rod, 444. Adjustment core shaft, 445. Sliding through hole, 446. Sliding locking disc, 447. Resistance adjustment compression spring; 5. Anti-retraction device; 51. Self-resetting disc body, 511. Driving lead screw, 512. Annular worm gear, 513. Rotating ring, 514. Transmission inserting key, 515. Torsion spring; 52. Swing arm chamber, 521. Swing arm main chamber, 522. Swing arm opening; 53. Trigger swing arm, 531. Swing arm body, 532. Swing arm contact. Detailed implementation method

[0023] An opening and closing type traveling wave ranging current transformer, including a fixed lower part 9 and an opening and closing upper part 8, further including: A hinged slideway 7, including a hinged base 71 provided on the right side of the fixed lower part 9, a sliding track 72 provided above and on the right side of the hinged base 71, and a guiding conical groove 73 that gradually widens from top to bottom provided below the sliding track 72. A hinged blind hole 74 is provided on the front and rear inner walls of the sliding track 72 respectively; A spring-loaded rotating shaft 6, including a spring-loaded base 61 provided on the right side of the opening and closing upper part 8. An automatically ejected rotating shaft assembly 62 is provided inside the spring-loaded base 61. The front and rear of the rotating shaft assembly 62 are respectively rotatably matched with the corresponding hinged blind holes 74.

[0024] As a further implementation: The rotating shaft assembly 62 includes a rotating shaft main cavity 1, a telescopic component 2, and a reset compression spring 3; The rotating shaft main cavity 1 includes a through channel 11 provided below the spring-loaded base 61 along the front and rear directions, a wide-diameter circular cavity 12 provided in the middle of the through channel 11, a rotation-stopping insertion rod 13 provided above the wide-diameter circular cavity 12. A limiting plug 14 is provided on the front and rear inner walls of the through channel 11 respectively. A swing arm circular cavity 15 is provided in the latter half of the through channel 11. A connecting middle cavity 16 is provided behind the swing arm circular cavity 15. A worm gear circular cavity 17 is provided behind the connecting middle cavity 16. A lead screw channel 18 is communicated and provided above the worm gear circular cavity 17; There are a pair of telescopic components 2. A telescopic component 2 is provided at the front and rear of the through channel 11 respectively. The telescopic component 2 includes a sliding shaft body 21 slidably provided in the through channel 11, a limiting shaft groove 22 provided on the outer wall of the sliding shaft body 21 and inserted and matched with the limiting plug 14, and a spring guide rod 23 provided inside the sliding shaft body 21; The reset compression spring 3 is provided in the through channel 11 and drives the pair of telescopic components 2 to move away from each other. There are a pair of reset compression springs 3, and a reset compression spring 3 is respectively provided on the spring guide rod 23 of each telescopic component 2; The rotating shaft assembly 62 further includes a resistance adjusting device 4. The resistance adjusting device 4 includes a rotating component 41, a spring baffle 42, an adjusting total cavity 43, and an adjusting rod body 44; The rotating component 41 includes an internally threaded tube 411 rotatably provided in the wide-diameter circular cavity 12 and a driven gear 412 provided on the outer wall of the internally threaded tube 411; The spring baffle 42 includes an externally threaded ring 421 screwed with the internally threaded tube 411 and sleeved on the spring guide rod 23, and a rotation-stopping through hole 422 provided on the externally threaded ring 421 and inserted and matched with the rotation-stopping insertion rod 13. There are a pair of spring baffles 42 and they are respectively located inside the corresponding reset compression springs 3; The adjustment total cavity 43 includes an adjustment upper cavity 431 provided above the spring pressing base 61 and communicating with the wide-diameter circular cavity 12, an adjustment through hole 432 provided in front of the adjustment upper cavity 431, a locking circular cavity 433 provided in the middle of the adjustment through hole 432, and fixed locking teeth 434 provided on the front inner wall of the locking circular cavity 433; The adjustment rod body 44 includes a driving gear 441 rotatably provided in the adjustment upper cavity 431 and cooperating with the driven gear 412, a gear through hole 442 provided in the driving gear 441, and a transmission insertion rod 443 provided on the inner wall of the gear through hole 442. The adjustment rod body 44 further includes an adjustment core shaft 444 provided in the adjustment through hole 432. The adjustment core shaft 444 is inserted into the gear through hole 442 and is provided with a sliding through hole 445 for accommodating the transmission insertion rod 443. A sliding locking disc 446 is further provided on the outer wall of the adjustment core shaft 444 corresponding to the locking circular cavity 433. A resistance adjustment spring 447 is further provided on the outer wall of the adjustment core shaft 444. The resistance adjustment spring 447 is provided at the position behind the sliding locking disc 446 in the locking circular cavity 433.

[0025] Furthermore: A semi-circular convex block 24 is respectively provided on the inner side of each telescopic assembly 2. A transmission key groove 25 is further provided above the front end of the telescopic assembly 2 located at the rear; The rotating shaft assembly 62 further includes an anti-retraction device 5. The anti-retraction device 5 includes a self-resetting disc body 51, a swing arm chamber 52, and a trigger swing arm 53; The self-resetting disc body 51 includes a driving lead screw 511 rotatably provided in the lead screw channel 18, an annular worm gear 512 rotatably provided in the worm gear circular cavity 17 and drivingly connected to the driving lead screw 511, a rotating ring 513 rotatably provided in the swing arm circular cavity 15, and a transmission insertion key 514 provided on the inner wall of the rotating ring 513 and inserted into the transmission key groove 25. A torsion spring 515 is further provided in the connection middle cavity 16. One end of the torsion spring 515 is connected to the annular worm gear 512 and the other end is connected to the rotating ring 513; The swing arm chamber 52 includes a swing arm main chamber 521 provided on the left side of the spring pressing base 61 and communicating with the swing arm circular cavity 15, and a swing arm opening 522 provided below the swing arm main chamber 521; The trigger swing arm 53 includes a swing arm body 531 provided on the left side of the rotating ring 513, and a swing arm contact 532 provided at the lower end of the swing arm body 531 and passing through the swing arm opening 522;

[0026] Furthermore: The annular worm gear 512 is sleeved on the telescopic assembly 2 located at the rear.

[0027] Furthermore: The limiting shaft groove 22 of the telescopic component 2 located at the rear is an arc-shaped groove arranged along the outer periphery of the sliding shaft body 21.

[0028] Furthermore: Internal threads with opposite helix directions are respectively provided on the front and rear inner walls of the internal thread tube 411.

[0029] The current transformer described in this case can be completely disassembled and assembled separately, and is convenient for disassembly and assembly: As shown in the attached Figure 2 description: S1, initially connect and fix the lower part 9 and the opening and closing upper part 8: Set the notch of the opening and closing upper part 8 upward and make it located on the right side of the spring-loaded rotating shaft 6; Push the opening and closing upper part 8 and the spring-loaded rotating shaft 6 to move upward along the guiding tapered groove 73 and the sliding track 72; As shown in the attached Figure 6 , 7 description: The guiding tapered groove 73 gradually narrows in the front-rear direction, thereby squeezing a pair of telescopic components 2 to contract, that is, the sliding shaft body 21, the spring guide rod 23, and the semi-circular convex block 24 slide inward against the damping of the return compression spring 3; it should be noted that under normal conditions, the semi-circular convex blocks 24 of a pair of telescopic components 2 are arranged in a staggered manner, so they will not interfere with the contraction of a pair of telescopic components 2.

[0030] Continue to push the opening and closing upper part 8 and the spring-loaded rotating shaft 6 upward until the telescopic component 2 is aligned with the articulated blind hole 74 and then pops out and resets, and the opening and closing upper part 8 and the fixed lower part 9 are completed for articulation.

[0031] S2, lock the axial telescopic freedom degree of the telescopic component 2: As shown in the attached Figure 1 description: Rotate the opening and closing upper part 8 around the telescopic component 2 until the opening and closing upper part 8 is closed with the fixed lower part 9; As shown in the attached Figure 10 description: The fixed lower part 9 squeezes the trigger swing arm 53, and the trigger swing arm 53 drives the rotating ring 513 and the transmission key 514 to rotate; As shown in the attached Figure 9 description: The transmission key 514 acts on the transmission key groove 25 of the telescopic component 2 located at the rear, thereby driving the sliding shaft body 21, the spring guide rod 23, and the semi-circular convex block 24 to rotate against the torsion of the torsion spring 515, so that the semi-circular convex blocks 24 of a pair of telescopic components 2 are aligned, and at this time, a pair of telescopic shafts 2 cannot continue to axially contract.

[0032] It should be noted that the damping of the reset compression spring 3 in this case can be adjusted: Squeeze the adjusting mandrel 444 and the sliding lock disc 446 backward to make them move backward against the damping of the resistance adjusting compression spring 447, and the sliding lock disc 446 is disengaged from the fixed locking teeth 434; Twist the adjusting mandrel 444 and the sliding through hole 445 to drive the transmission plug rod 443 and the driving gear 441 to rotate; The driving gear 441 drives the driven gear 412 and the internal thread tube 411 to rotate, and the internal thread tube 411 drives the external thread ring 421 to make a pair of external thread rings 421 move away from or close to each other, so as to adjust the compression amount and damping of a pair of reset compression springs 3 under normal conditions.

[0033] It should be noted that the thread directions of the front and rear halves of the internal thread tube 411 are opposite.

[0034] It should be noted that the damping of the rotating ring 513 and the trigger swing arm 53 in this case can be adjusted: Rotate the driving lead screw 511 to drive the annular worm wheel 512 to rotate, adjust the torsion amount and torsion force of the torsion spring 515 under normal conditions, and adjust the damping of the rotation of the trigger swing arm 53, the rotating ring 513, and the transmission key 514.

[0035] It should be noted that a guiding sunk groove 76 extending to the guiding conical groove 73 is also provided at the inner wall of the hinged base 71 directly below the hinged blind hole 74, and the width of the guiding sunk groove 76 in the left - right direction is equal to the diameter of the hinged blind hole 74.

[0036] It should be noted that a disassembly fine hole 75 is also provided on the outer side of the hinged blind hole 74. Through this disassembly fine hole 75, a thin - shaft device such as a screwdriver can be inserted to squeeze the pair of telescopic components 2 inward until they are completely retracted, and then the spring - pressed rotating shaft 6 can be slid out of the hinged blind hole 74 and slide downward through the guiding sunk groove 76 and the guiding conical groove 73.

Claims

1. A split-type traveling wave ranging current transformer, comprising a fixed lower part (9) and a split upper part (8), characterized in that: Also includes: The hinged slideway (7) comprises a hinged base (71) arranged on the right side of the fixed lower part (9), a sliding track (72) arranged above the right side of the hinged base (71), and a guide cone groove (73) arranged below the sliding track (72) and gradually widening from top to bottom, wherein a hinged blind hole (74) is respectively arranged at the front and rear of the inner wall of the sliding track (72); The spring-loaded rotating shaft (6) comprises a spring-loaded base (61) arranged on the right side of the opening and closing upper part (8), wherein an automatically ejected rotating shaft assembly (62) is arranged in the spring-loaded base (61), and the rotating shaft assembly (62) is rotatably matched with corresponding hinged blind holes (74) at the front and rear respectively.

2. The split-type traveling wave ranging current transformer according to claim 1, characterized in that: The rotating shaft assembly (62) comprises a rotating shaft main cavity (1), a telescopic component (2), and a return compression spring (3); The main cavity (1) of the rotating shaft comprises a through passage (11) arranged below the spring-pressing base (61) along the front-back direction, a wide-diameter circular cavity (12) arranged in the middle of the through passage (11), and a rotation-stopping plug (13) arranged above the wide-diameter circular cavity (12); a limit plug (14) is respectively arranged at the front and rear of the inner wall of the through passage (11); a swing arm circular cavity (15) is arranged at the rear half of the through passage (11); a connecting middle cavity (16) is arranged at the rear of the swing arm circular cavity (15); a worm wheel circular cavity (17) is arranged at the rear of the connecting middle cavity (16); and a screw rod passage (18) is arranged above the worm wheel circular cavity (17); The telescopic components (2) are provided in pair, one telescopic component (2) being provided in front of and one telescopic component (2) being provided at the rear of the through passage (11), the telescopic components (2) comprising a sliding shaft body (21) slidably arranged in the through passage (11), a limiting shaft groove (22) provided on the outer wall of the sliding shaft body (21) and pluggably engaged with the limiting plug (14), and a spring guide rod (23) provided on the inner side of the sliding shaft body (21); A return compression spring (3) is disposed in the through passage (11) and drives the pair of telescopic components (2) to move away from each other.

3. The split-type traveling wave ranging current transformer according to claim 2, characterized in that: The return compression spring (3) is provided in pair, and a return compression spring (3) is provided on the spring guide rod (23) of each telescopic assembly (2); The rotating shaft assembly (62) further comprises a resistance adjusting device (4), wherein the resistance adjusting device (4) comprises: A rotating assembly (41) comprising an internally threaded tube (411) rotatably disposed in the wide-diameter circular cavity (12) and a driven gear (412) disposed on the outer wall of the internally threaded tube (411); The spring baffle (42) comprises an external threaded ring (421) threadedly connected to the internal threaded tube (411) and sleeved on the spring guide rod (23), and an anti-rotation through hole (422) provided on the external threaded ring (421) and plugged with the anti-rotation plug rod (13), the spring baffle (42) being provided with a pair of return springs (3) respectively located on the inner sides of the corresponding return springs (3); The regulating main cavity (43) comprises an upper regulating cavity (431) disposed above the spring-pressing base (61) and communicating with the wide-diameter circular cavity (12), an regulating through hole (432) disposed in front of the upper regulating cavity (431), a locking circular cavity (433) disposed in the middle of the regulating through hole (432), and a fixed locking tooth (434) disposed in front of the inner wall of the locking circular cavity (433); The adjusting rod body (44) comprises a driving gear (441) rotatably disposed in the adjusting upper cavity (431) and cooperating with the driven gear (412), a gear through hole (442) disposed in the driving gear (441), and a transmission plug rod (443) disposed on the inner wall of the gear through hole (442). The adjusting rod body (44) further comprises an adjusting mandrel (444) disposed in the adjusting through hole (432), and the adjusting mandrel (444) is inserted into the gear through hole (432). 442) is provided with a sliding through hole (445) for accommodating a transmission plug rod (443); a sliding lock disk (446) is provided at a position corresponding to the outer wall of the adjusting mandrel (444) and the locking circular cavity (433); the sliding lock disk (446) is locked with the fixed lock tooth (434); a resistance adjustment spring (447) is wound around the outer wall of the adjusting mandrel (444); the resistance adjustment spring (447) is arranged in the locking circular cavity (433) behind the sliding lock disk (446).

4. The split-type traveling wave ranging current transformer according to claim 3, characterized in that: A semicircular protrusion (24) is provided at the stop end of the spring guide rod (23) of each telescopic assembly (2), and a transmission keyway (25) is also provided above the sliding shaft (21) of the telescopic assembly (2) located at the rear; The rotating shaft assembly (62) further comprises an anti-retraction device (5), wherein the anti-retraction device (5) comprises: The self-resetting disk body (51) comprises a driving screw (511) rotatably arranged in the screw channel (18), an annular worm wheel (512) rotatably arranged in the worm wheel circular cavity (17) and drivingly connected to the driving screw (511), a rotating circular ring (513) rotatably arranged in the swing arm circular cavity (15), and a driving key (514) arranged on the inner wall of the rotating circular ring (513) and plugged into the driving key groove (25), and a torsion spring (515) is further arranged in the connecting middle cavity (16), one end of the torsion spring (515) is connected to the annular worm wheel (512) and the other end is connected to the rotating circular ring (513); The swing arm chamber (52) comprises a swing arm main chamber (521) provided on the left side of the spring-pressing base (61) and connected to the swing arm circular chamber (15), and a swing arm opening (522) provided below the swing arm main chamber (521); The trigger swing arm (53) comprises a swing arm body (531) arranged on the left side of the rotating ring (513), and a swing arm contact (532) arranged at the lower end of the swing arm body (531) and passing through the swing arm opening (522).

5. The split-type traveling wave ranging current transformer according to claim 4, characterized in that: The annular worm gear (512) is sleeved on the telescopic assembly (2) located at the rear.

6. The split-type traveling wave ranging current transformer according to claim 5, characterized in that: The limiting shaft groove (22) of the telescopic assembly (2) located at the rear is an arc-shaped groove body arranged along the outer periphery of the sliding shaft body (21).

7. The split-type traveling wave ranging current transformer according to claim 6, characterized in that: The inner wall of the internal threaded tube (411) is provided with internal threads with opposite rotation directions at the front and rear.

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