A switching type traveling wave ranging current transformer

Abstract

The present application relates to the technical field of transformers, and specifically to an open-and-close traveling wave ranging current transformer, comprising a fixed lower portion, an open-and-close upper portion, an articulated slideway, and a spring-loaded rotating shaft; the articulated slideway comprises an articulated base, a sliding track, and a guide cone groove, and the inner wall of the sliding track is provided with a hinged blind hole at the front and rear, respectively; the spring-loaded rotating shaft comprises a spring-loaded base provided on the right side of the open-and-close upper portion, and an automatically pop-up rotating shaft assembly is provided in the spring-loaded base, and the front and rear of the rotating shaft assembly are respectively rotatably matched with the corresponding articulated blind holes, and the rotating shaft assembly comprises a rotating shaft main cavity, a telescopic component, and a reset compression spring. In the open-and-close traveling wave ranging current transformer described in this case, the fixed lower portion and the open-and-close upper portion can be completely separated, and the above two parts can be quickly replaced when either is damaged; the open-and-close traveling wave ranging current transformer described in this case is easy to disassemble and assemble.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a split-type traveling wave ranging current transformer. Background Art

[0002] When a fault occurs in a transmission line, high-frequency transient current traveling waves are generated. The core task of the current transformer is to accurately detect these high-frequency signals and provide raw data for subsequent fault location. The existing technology already has integrated traveling wave ranging equipment, which includes at least an open and closeable housing for being mounted on the transmission line, and a current transformer arranged in the housing. Usually, the current transformer is also an articulated structure. In actual use, the two parts of the articulated current transformer are hinged to each other, resulting in the following problems: when one part is damaged and fails, the other part can only be discarded. Even if the articulated mechanism is dismantled and replaced, it is difficult to ensure the concentricity of the two parts, which reduces the measurement accuracy. Summary of the Invention

[0003] A split-type traveling wave ranging current transformer, comprising a fixed lower part, a split upper part, and further comprising:

[0004] The hinged slide includes a hinged base provided on the right side of the fixed lower part, a sliding track provided above the right side of the hinged base, and a guide cone groove provided below the sliding track and gradually widening from top to bottom. A hinged blind hole is provided at the front and rear of the inner wall of the sliding track respectively.

[0005] The spring-pressed rotating shaft comprises a spring-pressed base arranged on the right side of the upper opening and closing part, wherein the spring-pressed base is provided with an automatically pop-up rotating shaft assembly, and the front and rear of the rotating shaft assembly are respectively rotatably matched with corresponding hinged blind holes.

[0006] As a further implementation:

[0007] The rotating shaft assembly includes a rotating shaft main cavity, a telescopic component, and a return compression spring;

[0008] The main cavity of the rotating shaft includes a through channel arranged below the spring-pressing base in the front-to-back direction, a wide-diameter circular cavity arranged in the middle of the through channel, and a rotation-stopping plug arranged above the wide-diameter circular cavity. A limit plug is respectively provided at the front and rear of the inner wall of the through channel. A swing arm circular cavity is provided in the rear half of the through channel, a connecting middle cavity is provided behind the swing arm circular cavity, a worm gear circular cavity is provided behind the connecting middle cavity, and a screw rod channel is provided above the worm gear circular cavity;

[0009] The telescopic assembly is provided in pair, one at the front and one at the rear of the through channel respectively, and the telescopic assembly comprises a sliding shaft body slidably provided in the through channel, a limiting shaft groove provided on the outer wall of the sliding shaft body and plugged into the limiting plug, and a spring guide rod provided inside the sliding shaft body;

[0010] A return compression spring is provided in the through channel to drive the pair of telescopic assemblies away from each other. The return compression spring is provided in pair, and a return compression spring is provided on the spring guide rod of each telescopic assembly;

[0011] The rotating shaft assembly further includes a resistance adjusting device, which includes a rotating component, a spring baffle, an adjusting main cavity, and an adjusting rod body;

[0012] The rotating assembly includes 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;

[0013] The spring baffle includes 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 into the rotation-stopping plug rod. The spring baffle is provided with a pair of holes, each located on the inner side of the corresponding return compression spring.

[0014] The main adjustment cavity includes an upper adjustment cavity provided above the spring-pressing base and connected to the wide-diameter circular cavity, an adjustment through hole provided in front of the upper adjustment cavity, a locking circular cavity provided in the middle of the adjustment through hole, and a fixed lock tooth provided in front of the inner wall of the locking circular cavity;

[0015] 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 core shaft arranged in the adjusting through hole, the adjusting core shaft 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 further provided at the outer wall of the adjusting core shaft corresponding to the locking circular cavity, and an adjusting resistance pressure spring is further provided on the outer wall of the adjusting core shaft, and the adjusting resistance pressure spring is arranged in the locking circular cavity behind the sliding lock disk.

[0016] Further:

[0017] Each telescopic component has a semicircular protrusion on the inner side, and the telescopic component at the rear has a transmission keyway on the upper front end;

[0018] The rotating shaft assembly further includes an anti-retraction device, which includes a self-resetting disc, a swing arm chamber, and a trigger swing arm;

[0019] 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 provided on the inner wall of the rotating ring and plugged into the transmission key groove. A torsion spring is also provided in the connecting cavity, one end of the torsion spring is connected to the annular worm wheel and the other end is connected to the rotating ring;

[0020] The swing arm chamber includes a swing arm main chamber located on the left side of the spring-pressing base and communicating with the swing arm circular chamber, and a swing arm opening located below the swing arm main chamber;

[0021] The trigger swing arm includes 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.

[0022] Beneficial effects:

[0023] In the case of the open-and-close traveling wave ranging current transformer described in this case, the fixed lower part and the open-and-close upper part can be completely separated, which means that if either of the two parts is damaged, they can be quickly replaced.

[0024] The open-and-close traveling wave ranging current transformer described in this case is easy to assemble and disassemble: push the upper opening and closing part and press the rotating shaft to move it upward along the guide cone groove and the sliding track; the guide cone groove gradually narrows in the front-to-back direction and 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.

[0025] The case describes an open-and-close traveling wave ranging current transformer, in which the resistance adjustment device can synchronously adjust the compression amount and damping of a pair of reset springs under normal conditions, and adjust the damping of a pair of rotating shaft assemblies that are retracted under pressure and the rate of ejection when pressure is lost.

[0026] The open-and-close traveling wave ranging current transformer described in this case uses an anti-retraction device to prevent a pair of telescopic components from loosening and locking back when the reset compression spring fails, causing the hinged connection between the spring-loaded rotating shaft and the hinged blind hole to fail, making it impossible to close tightly between the fixed upper part and the open-and-close lower part, affecting the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of one state of the open-close traveling wave ranging current transformer.

[0028] Figure 2 Schematic diagram of another state of the open-close traveling wave ranging current transformer.

[0029] Figure 3 It is a schematic diagram of an embodiment of the fixed lower part.

[0030] Figure 4 It is a schematic diagram of an embodiment of the opening and closing upper part.

[0031] Figure 5 It is a front view of an embodiment of the opening and closing upper part.

[0032] Figure 6 yes Figure 5 Cross-sectional view of section AA.

[0033] Figure 7 yes Figure 5 Partial cross-sectional view of the first state of the AA section.

[0034] Figure 8 yes Figure 5 Partial cross-sectional view of the second state of section AA.

[0035] Figure 9 yes Figure 5 Partial cross-sectional view of the third state of section AA.

[0036] Figure 10 yes Figure 6 A partial cross-sectional view of an embodiment of the BB section.

[0037] Figure 11 It is a cross-sectional view of an embodiment of the spring-pressing base and the main cavity of the rotating shaft.

[0038] Figure 12 Schematic diagram of an embodiment of the telescopic assembly.

[0039] In the picture:

[0040] 9.Fix the lower part;

[0041] 8. Open and close the upper part;

[0042] 7. Articulated slideway, 71. Articulated foundation, 72. Sliding track, 73. Guide cone groove, 74. Articulated blind hole, 75. Disassembly hole, 76. Guide sink;

[0043] 6. Spring-loaded rotating shaft, 61. Spring-loaded base, 62. Rotating shaft assembly;

[0044] 1. Rotating shaft main cavity, 11. Through channel, 12. Wide diameter circular cavity, 13. Anti-rotation plug, 14. Limit plug, 15. Swing arm circular cavity, 16. Connecting middle cavity, 17. Worm gear circular cavity, 18. Screw channel;

[0045] 2. Telescopic assembly, 21. Sliding shaft, 22. Limiting shaft groove, 23. Spring guide rod, 24. Semicircular protrusion, 25. Transmission keyway;

[0046] 3. Reset compression spring;

[0047] 4. Resistance adjustment device;

[0048] 41. Rotating assembly, 411. Internally threaded tube, 412. Driven gear;

[0049] 42. Spring baffle, 421. External thread ring, 422. Anti-rotation through hole;

[0050] 43. Adjust the main cavity, 431. Adjust the upper cavity, 432. Adjust the through hole, 433. Lock the circular cavity, 434. Fix the lock teeth;

[0051] 44. Adjusting rod, 441. Driving gear, 442. Gear through hole, 443. Transmission rod, 444. Adjusting mandrel, 445. Sliding through hole, 446. Sliding lock plate, 447. Adjusting resistance pressure spring;

[0052] 5. Anti-retraction device;

[0053] 51. Self-resetting disc, 511. Active screw, 512. Ring worm gear, 513. Rotating ring, 514. Transmission key, 515. Torsion spring;

[0054] 52. Swing arm chamber, 521. Swing arm main chamber, 522. Swing arm opening;

[0055] 53. Trigger swing arm, 531. Swing arm body, 532. Swing arm contact. DETAILED DESCRIPTION

[0056] A split-type traveling wave ranging current transformer, comprising a fixed lower portion 9, a split upper portion 8, and further comprising:

[0057] The hinged slide 7 includes a hinged base 71 provided on the right side of the fixed lower portion 9, a sliding track 72 provided above the right side of the hinged base 71, and a guide cone groove 73 provided below the sliding track 72 and gradually widening from top to bottom. A hinged blind hole 74 is provided on the front and rear inner walls of the sliding track 72 respectively.

[0058] The spring-loaded rotating shaft 6 includes a spring-loaded base 61 arranged on the right side of the opening and closing upper part 8. The spring-loaded base 61 is provided with an automatically pop-up rotating shaft assembly 62. The front and rear of the rotating shaft assembly 62 are respectively rotatably matched with the corresponding hinge blind holes 74.

[0059] As a further implementation:

[0060] The rotating shaft assembly 62 includes a rotating shaft main cavity 1, a telescopic component 2, and a return compression spring 3;

[0061] The main cavity 1 of the rotating shaft includes a through channel 11 provided below the spring-pressing base 61 in the front-to-back direction, a wide-diameter circular cavity 12 provided in the middle of the through channel 11, and a rotation-stopping plug 13 provided above the wide-diameter circular cavity 12. A limit plug 14 is provided at the front and rear of the inner wall of the through channel 11, respectively. A swing arm circular cavity 15 is provided at the rear 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, and a screw rod channel 18 is provided above the worm gear circular cavity 17;

[0062] The telescopic assembly 2 is provided in pair, with one telescopic assembly 2 provided in front of and one in the rear of the through channel 11. The telescopic assembly 2 includes a sliding shaft 21 slidably provided in the through channel 11, a limiting shaft groove 22 provided on the outer wall of the sliding shaft 21 and plugged into the limiting plug 14, and a spring guide rod 23 provided on the inner side of the sliding shaft 21.

[0063] A return compression spring 3 is provided in the through channel 11 to drive the pair of telescopic components 2 to move away from each other. A pair of return compression springs 3 is provided, and a return compression spring 3 is provided on the spring guide rod 23 of each telescopic component 2;

[0064] The rotating shaft assembly 62 further includes a resistance adjusting device 4, which includes a rotating component 41, a spring baffle 42, an adjusting main cavity 43, and an adjusting rod 44;

[0065] The rotating assembly 41 includes 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 ;

[0066] The spring baffle 42 includes an external threaded ring 421 that is threadedly connected to the internal threaded tube 411 and sleeved on the spring guide rod 23, and a rotation-stopping through hole 422 provided on the external threaded ring 421 and plugged into the rotation-stopping plug rod 13. The spring baffle 42 is provided with a pair of springs, each located on the inner side of the corresponding return compression spring 3.

[0067] The main adjustment cavity 43 includes an upper adjustment cavity 431 disposed above the spring-pressing base 61 and communicating with the wide-diameter circular cavity 12, an adjustment through hole 432 disposed in front of the upper adjustment cavity 431, a locking circular cavity 433 disposed in the middle of the adjustment through hole 432, and a fixed locking tooth 434 disposed in front of the inner wall of the locking circular cavity 433.

[0068] The adjusting rod body 44 includes a driving gear 441 rotatably arranged in the adjusting upper cavity 431 and cooperating with the driven gear 412, a gear through hole 442 arranged in the driving gear 441, and a transmission plug rod 443 arranged on the inner wall of the gear through hole 442. The adjusting rod body 44 also includes an adjusting core shaft 444 arranged in the adjusting through hole 432. The adjusting core shaft 444 is inserted into the gear through hole 442 and is provided with a sliding through hole 445 for accommodating the transmission plug rod 443. A sliding lock disk 446 is also provided at the outer wall of the adjusting core shaft 444 corresponding to the locking circular cavity 433. The outer wall of the adjusting core shaft 444 is also provided with an adjustment resistance pressure spring 447. The adjustment resistance pressure spring 447 is arranged in the locking circular cavity 433 behind the sliding lock disk 446.

[0069] Further:

[0070] A semicircular protrusion 24 is provided on the inner side of each telescopic assembly 2, and a transmission key slot 25 is provided on the upper front end of the rear telescopic assembly 2;

[0071] The rotating shaft assembly 62 further includes an anti-retraction device 5, which includes a self-resetting disc 51, a swing arm chamber 52, and a trigger swing arm 53;

[0072] The self-resetting disc 51 includes a driving screw 511 rotatably disposed in the screw channel 18, an annular worm wheel 512 rotatably disposed in the worm wheel circular cavity 17 and transmission-connected to the driving screw 511, a rotating ring 513 rotatably disposed in the swing arm circular cavity 15, and a transmission key 514 disposed on the inner wall of the rotating ring 513 and plugged into the transmission key groove 25. A torsion spring 515 is further disposed in the connecting cavity 16, one end of the torsion spring 515 being connected to the annular worm wheel 512 and the other end being connected to the rotating ring 513.

[0073] The swing arm chamber 52 includes a swing arm main chamber 521 located on the left side of the spring-pressing base 61 and communicating with the swing arm circular chamber 15, and a swing arm opening 522 located below the swing arm main chamber 521;

[0074] The trigger swing arm 53 includes a swing arm body 531 disposed on the left side of the rotating ring 513 and a swing arm contact 532 disposed at the lower end of the swing arm body 531 and passing through the swing arm opening 522 .

[0075] Further:

[0076] The annular worm gear 512 is sleeved on the telescopic assembly 2 located at the rear.

[0077] Further:

[0078] The limiting shaft groove 22 of the telescopic assembly 2 located at the rear is an arc-shaped groove arranged along the outer periphery of the sliding shaft body 21.

[0079] Further:

[0080] The inner wall of the internal threaded tube 411 is provided with internal threads with opposite rotation directions at the front and rear.

[0081] The current transformer described in this case can be completely separated and easily disassembled and assembled:

[0082] As the instruction manual Figure 2 As shown:

[0083] S1, preliminary connection of the fixed lower part 9 and the opening and closing upper part 8:

[0084] The notch of the upper opening and closing portion 8 is facing upwards and located on the right side of the spring-pressing shaft 6;

[0085] Push the opening and closing upper part 8 and press the rotating shaft 6 to move it upward along the guide cone groove 73 and the sliding track 72;

[0086] As the instruction manual Figure 6 、 7 As shown:

[0087] The guide cone groove 73 gradually narrows in the front-to-back direction, thereby squeezing the pair of telescopic components 2 to contract, that is, the sliding shaft 21, the spring guide rod 23, and the semicircular protrusion 24 overcome the damping of the return compression spring 3 and slide inward; it should be noted that under normal circumstances, the semicircular protrusions 24 of the pair of telescopic components 2 are staggered with each other, so they will not interfere with the contraction of the pair of telescopic components 2.

[0088] Continue to push up the opening and closing upper part 8 and the spring-pressing shaft 6 until the telescopic component 2 is aligned with the hinge blind hole 74 and then pops out and resets, and the opening and closing upper part 8 and the fixed lower part 9 are hinged.

[0089] S2, locking the axial telescopic freedom of the telescopic assembly 2:

[0090] As the instruction manual Figure 1 As shown:

[0091] Rotate the opening and closing upper portion 8 around the telescopic assembly 2 until the opening and closing upper portion 8 and the fixed lower portion 9 are closed;

[0092] As the instruction manual Figure 10 As shown:

[0093] The fixed lower portion 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;

[0094] As the instruction manual Figure 9 As shown:

[0095] The transmission key 514 acts on the transmission key slot 25 of the telescopic component 2 located at the rear, thereby driving the sliding shaft 21, the spring guide rod 23, and the semicircular protrusion 24 to overcome the torsion of the torsion spring 515 and rotate, so that the semicircular protrusions 24 of a pair of telescopic components 2 are aligned and arranged. At this time, the pair of telescopic shafts 2 can no longer continue to retract axially.

[0096] It should be noted that the damping of the return compression spring 3 can be adjusted in this case:

[0097] The adjusting core shaft 444 and the sliding lock plate 446 are squeezed backward to overcome the damping of the resistance adjustment spring 447 and move backward, and the sliding lock plate 446 is disengaged from the fixed lock tooth 434;

[0098] The twisting adjustment core shaft 444 and the sliding through hole 445 drive the transmission rod 443 and the driving gear 441 to rotate;

[0099] The driving gear 441 drives the driven gear 412 and the internal threaded tube 411 to rotate, and the internal threaded tube 411 drives the external threaded ring 421 so that the pair of external threaded rings 421 move away from or approach each other, thereby adjusting the compression and damping of the pair of return compression springs 3 under normal conditions.

[0100] It should be noted that the threads of the front and rear halves of the internally threaded tube 411 have opposite rotation directions.

[0101] It should be noted that the damping of the rotating ring 513 and the triggering swing arm 53 can be adjusted in this embodiment:

[0102] The active screw 511 is rotated to drive the annular worm gear 512 to rotate, and the torsion amount and torque of the torsion spring 515 under normal conditions are adjusted to adjust the damping of the rotation of the trigger swing arm 53, the rotating ring 513, and the transmission key 514.

[0103] It should be noted that the inner wall of the hinge base 71 is provided with a guide groove 76 extending to the guide cone groove 73 just below the hinge blind hole 74 , and the width of the guide groove 76 in the left and right directions is equal to the diameter of the hinge blind hole 74 .

[0104] It should be noted that a disassembly hole 75 is also provided on the outside of the hinged blind hole 74, through which a thin shaft device such as a screwdriver can be inserted to squeeze the pair of telescopic components 2 inward until they are fully retracted, and then the spring-loaded rotating shaft 6 is slid out of the hinged blind hole 74 and slides downward through the guide groove 76 and the guide cone 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) provided on the right side of the fixed lower portion (9), a sliding track (72) provided above the right side of the hinged base (71), and a guide cone groove (73) provided below the sliding track (72) and gradually widening from top to bottom. A hinged blind hole (74) is provided 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) provided on the right side of the opening and closing upper portion (8), wherein an automatically ejected rotating shaft assembly (62) is provided in the spring-loaded base (61), and the front and rear ends of the rotating shaft assembly (62) are respectively rotatably engaged with corresponding hinged blind holes (74); 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) provided below the spring-pressing base (61) in the front-back direction, a wide-diameter circular cavity (12) provided in the middle of the through passage (11), and a rotation-stopping plug (13) provided above the wide-diameter circular cavity (12); a limit plug (14) is provided at the front and rear of the inner wall of the through passage (11); a swing arm circular cavity (15) is provided at the rear half of the through passage (11); a connecting middle cavity (16) is provided at the rear of the swing arm circular cavity (15); a worm wheel circular cavity (17) is provided at the rear of the connecting middle cavity (16); and a screw rod passage (18) is provided above the worm wheel circular cavity (17); The telescopic components (2) are provided in pair, with one telescopic component (2) provided in front of and one in the rear of the through channel (11), respectively. The telescopic components (2) include a sliding shaft (21) slidably provided in the through channel (11), a limiting shaft groove (22) provided on the outer wall of the sliding shaft (21) and plugged into the limiting plug (14), and a spring guide rod (23) provided on the inner side of the sliding shaft (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; 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 includes a resistance adjusting device (4), and the resistance adjusting device (4) includes: A rotating assembly (41) comprises an internally threaded tube (411) rotatably disposed within 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 a rotation-stopping through hole (422) provided on the external threaded ring (421) and plugged into the rotation-stopping plug rod (13). The spring baffle (42) is 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 regulating upper cavity (431) provided above the spring-pressing base (61) and communicating with the wide-diameter circular cavity (12), an regulating through hole (432) provided in front of the regulating upper cavity (431), a locking circular cavity (433) provided in the middle of the regulating through hole (432), and a fixed locking tooth (434) provided in front of the inner wall of the locking circular cavity (433); The adjusting rod body (44) includes a driving gear (441) rotatably arranged in the adjusting upper cavity (431) and cooperating with the driven gear (412), a gear through hole (442) arranged in the driving gear (441), and a transmission plug rod (443) arranged on the inner wall of the gear through hole (442). The adjusting rod body (44) also includes an adjusting core shaft (444) arranged in the adjusting through hole (432). The adjusting core shaft (444) is inserted into the gear through hole ( 442) is provided with a sliding through hole (445) for accommodating a transmission plug rod (443); a sliding lock disk (446) is provided at the outer wall of the adjusting core shaft (444) corresponding to the locking circular cavity (433); the sliding lock disk (446) is locked with the fixed lock tooth (434); an adjusting resistance pressure spring (447) is also wound around the outer wall of the adjusting core shaft (444); the adjusting resistance pressure spring (447) is arranged in the locking circular cavity (433) behind the sliding lock disk (446).

2. The split-type traveling wave ranging current transformer according to claim 1, characterized in that: The stop end of the spring guide rod (23) of each telescopic assembly (2) is provided with a semicircular protrusion (24), and the telescopic assembly (2) located at the rear is also provided with a transmission keyway (25) above its sliding shaft (21); The rotating shaft assembly (62) further includes an anti-retraction device (5), and the anti-retraction device (5) includes: The self-resetting disc (51) comprises a driving screw (511) rotatably arranged in the screw channel (18), an annular worm wheel (512) rotatably arranged in the worm wheel cavity (17) and connected to the driving screw (511), a rotating ring (513) rotatably arranged in the swing arm cavity (15), and a transmission key (514) provided on the inner wall of the rotating ring (513) and plugged into the transmission key groove (25). A torsion spring (515) is further provided in the connecting middle cavity (16), one end of the torsion spring (515) being connected to the annular worm wheel (512) and the other end being connected to the rotating 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 communicating with 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).

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

4. The split-type traveling wave ranging current transformer according to claim 3, 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).

5. The split-type traveling wave ranging current transformer according to claim 4, characterized in that: The inner wall of the internally threaded tube (411) is provided with internal threads with opposite rotation directions at the front and rear, respectively.

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