A kind of aviation plug linkage mechanism for circuit breaker

Abstract

The present invention discloses an aviation plug linkage mechanism for a circuit breaker. The mechanism includes a fixed plate, a mounting plate, a rotating assembly, a rotating limit assembly and an aviation plug socket limit assembly; the rotating assembly includes a rotating cam and a switch connecting rod, the switch connecting rod is arranged on the rotating cam axis, the rotating cam is rotatably arranged on the mounting plate, and a limit portion is arranged on the side wall of the rotating cam; the rotating limit assembly includes a sleeve, a latch, a spring, a first steel wire flexible shaft, a limit block and a flexible sleeve; the aviation plug socket limit assembly includes a second steel wire flexible shaft, a tension spring, a torsion spring, a pressure block and a rotating rod. The advantage of the present invention is that when the operator performs multiple plug-in and pull-out misoperations on the plug in the state where the circuit breaker is closed, the aviation plug will not collide with the pressure block, and will not cause excessive bending deformation to the pressure block; in addition, when the circuit breaker is used, according to the power-off tripping protection performance of the circuit breaker, it can be ensured that the circuit breaker can continue to rotate 30° after rotating 90° counterclockwise.

Description

Technical Field

[0001] The present invention relates to the technical field of shipboard power grid equipment, and in particular to an aerial plug linkage mechanism for a circuit breaker. Background Art

[0002] The accident power grid equipment is mainly used when the daily power distribution system of the ship is damaged. The corresponding plug-in boxes are connected through temporary soft cables and spanned across the damaged compartments to provide temporary power to important loads such as ensuring the navigation and safety of the ship, thereby improving the vitality of the ship. When using the accident power grid equipment, first connect the soft cable with cable connectors at both ends to the plug-in box before powering on. To ensure the safety of power grid equipment during use, a mechanical interlocking mechanism between the circuit breaker and the aviation plug socket is required to be set in the patch panel: when the aviation plug and the aviation plug socket are not reliably connected, the power switch cannot be closed; when the switch is closed, the aviation plug and the aviation plug socket cannot be plugged in or unplugged. During long-term use, the operator may make mistakes and plug and unplug the aviation plug multiple times when the switch is closed. Mechanical failure will occur in the long run, affecting the normal use of the patch panel. Moreover, most of the mechanical interlocking mechanisms in the prior art have a limited scope of application. For some models of domestic circuit breakers, the circuit breaker will trip for protection in the event of a sudden power outage. If the switch is reset to the open state, the switch needs to be rotated in the opposite direction for about 30°, and the mechanical interlocking mechanisms in the prior art usually cannot meet this condition. Summary of the invention

[0003] The object of the present invention is to provide a widely applicable and durable aviation plug linkage mechanism for circuit breakers in view of the above-mentioned deficiencies in the prior art.

[0004] The invention discloses an aviation plug linkage mechanism for a circuit breaker, comprising a fixing plate, a mounting plate, a rotating assembly, a rotating limiting assembly and an aviation plug socket limiting assembly.

[0005] The fixing plate is provided with a mounting hole passing through the fixing plate, the aviation plug socket is mounted on the mounting hole, and the aviation plug is inserted into the aviation plug socket through the mounting hole.

[0006] The rotating assembly includes a rotating cam, a rotating plate and a stopper, which are stacked on the mounting plate in sequence. The rotating plate is provided with a first through hole, the axis of the rotating cam is provided with a first limiting hole, and the mounting plate is provided with a second through hole. The switch connecting rod of the circuit breaker passes through the first through hole, the first limiting hole and the second through hole in sequence. The rotating cam can rotate relative to the mounting plate, and the rotating plate can rotate relative to the rotating cam. The stopper is fixed on the rotating cam and abuts against or separates from the rotating plate to limit the rotation of the rotating plate. A limiting portion is provided on the side wall of the rotating cam.

[0007] The rotation limit assembly comprises a sleeve, a latch, a spring, a first steel wire flexible shaft, a limit block and a flexible sleeve, the sleeve being fixedly arranged on the mounting plate, one end of the sleeve being provided with a movable hole penetrating therethrough, the latch being slidably arranged in the movable hole, the other end of the sleeve being open, the limit block being detachably arranged at the open portion thereof, the spring being arranged between the latch and the limit block, the limit block being provided with a channel penetrating therethrough, one end of the first steel wire flexible shaft being extended into the sleeve through the channel and being connected and fixed to the latch, a slideway being provided on the aviation plug socket, a slider being slidably arranged in the slideway, the slider being away from the aviation plug socket A slot is provided at one end, a through hole is provided in the slot, the other end of the first steel wire flexible shaft passes through the through hole and is connected and fixed to the aviation plug socket, a top block is provided on the aviation plug, the flexible sleeve is sleeved outside the first steel wire flexible shaft, one end of the flexible sleeve is inserted in the slot, and its end is against the slider, and the other end is inserted in the sleeve, the aviation plug is inserted into the aviation plug socket, the top block pushes the slider to slide outward, the flexible sleeve is bent, the first steel wire flexible shaft pulls the pin to slide into the sleeve, and the pin can move to abut or separate from the limiting portion to limit or allow the rotating cam to rotate clockwise;

[0008] The aviation plug socket limit assembly includes a second steel wire flexible shaft, a tension spring, a torsion spring, a pressure block, and a rotating rod. The rotating rod is vertically fixed to the fixed plate, the pressure block is rotatably arranged on the rotating rod, the torsion spring is sleeved on the rotating rod, one end of the torsion spring is fixed to the fixed plate, and the other end is against the pressure block. The pressure block rotates counterclockwise to compress the torsion spring, one end of the tension spring is connected to the pressure block, and the other end is connected to one end of the second steel wire flexible shaft, and the other end of the second steel wire flexible shaft is connected and fixed to the rotating plate. The rotating cam rotates clockwise, and the torsion spring drives the pressure block to rotate clockwise and press on the aviation plug socket, and the second steel wire flexible shaft drives the rotating plate to rotate clockwise.

[0009] Furthermore, the aviation plug socket limit assembly also includes two fixing seats and a hose, the hose is sleeved outside the second steel wire flexible shaft, and the two ends of the hose are respectively fixed on the fixing plate and the mounting plate through the two fixing seats.

[0010] Furthermore, the lower plate surface of the rotating cam is provided with a first protrusion protruding downward, and the upper plate surface of the rotating cam is provided with a second protrusion protruding upward, the first protrusion and the second protrusion are cylindrical, and the central axes of the first protrusion and the second protrusion coincide with the central axis of the rotating cam, the first limiting hole passes through the first protrusion and the second protrusion, the first protrusion can be rotatably inserted in the second through hole, and the second protrusion can be rotatably inserted in the first through hole.

[0011] Furthermore, the rotating plate includes a plate body and two extension plates extending outward from the plate body, the two extension plates are on the same straight line, the retaining member includes two retaining blocks, the two retaining blocks are fixedly provided on the upper plate surface of the rotating cam and are on the same straight line, the straight line passes through the center point of the first through hole, and the retaining blocks are provided on the trajectory of the clockwise rotation of the rotating plate.

[0012] Furthermore, the rotating assembly also includes a first pressure plate, a second pressure plate and a positioning sleeve, the first pressure plate is arranged above the rotating plate and is connected and fixed to the upper plate surface of the rotating cam, the first pressure plate does not contact the rotating plate, the second pressure plate is stacked on the first pressure plate, the second pressure plate is connected and fixed to the mounting plate, the first pressure plate is provided with a third through hole, the second pressure plate is provided with a fourth through hole, the positioning sleeve is inserted in the third through hole and the fourth through hole, and can rotate relative to the third through hole and the fourth through hole, the positioning sleeve is provided with a second limiting hole, and the switch connecting rod is inserted in the first limiting hole through the second limiting hole.

[0013] Furthermore, the thickness of the stop block is greater than the thickness of the rotating plate, the first pressure plate is placed on the stop block, and the upper plate surface of the rotating cam is provided with two threaded holes, the two threaded holes are located below the two stop blocks, and the bolts pass through the first pressure plate and the stop block in turn and are screwed in the threaded holes.

[0014] Furthermore, two ends of the second pressing plate are provided with first folding plates extending downward, a lower end of the first folding plate is provided with a second folding plate extending horizontally, and the second folding plate is fixed to the mounting plate by bolts.

[0015] Furthermore, one end of the torsion spring is fixed to the fixing plate through a fixing rod.

[0016] Furthermore, an internal thread is provided inside the other end of the sleeve, and an external thread matching the internal thread is provided at one end of the limit block, and the limit block is screwed on the other end of the sleeve.

[0017] Furthermore, a connecting threaded rod is fixedly provided at one end of the first steel wire flexible shaft, a threaded connection hole is provided at one end of the pin located in the sleeve, and the connecting threaded rod is screwed in the threaded connection hole.

[0018] Furthermore, the compression force of the torsion spring is smaller than the tension force of the tension spring.

[0019] The operation process of the aerial plug linkage mechanism for a circuit breaker of the present invention is as follows:

[0020] When the breaker is in the open state, the aviation plug is not inserted into the aviation plug socket, the pin is against the limit part, and the pin blocks the rotating cam from rotating clockwise. At this time, the circuit breaker cannot be closed. Under the pulling force of the second steel wire flexible shaft, the torsion spring is compressed, and the end face of the pressure block is away from the notch position of the aviation plug socket, so that the aviation plug can be smoothly inserted into the aviation plug socket. When the aviation plug is inserted into the aviation plug socket, the top block on the aviation plug pushes the slider to move outward, and the slider gives one end of the flexible sleeve an outward force, and the flexible sleeve slides relative to the first steel wire flexible shaft. Since the other end of the flexible sleeve is inserted in the channel, the flexible sleeve will bend, and the first steel wire flexible shaft follows the bending of the flexible sleeve. Since the other end of the first steel wire flexible shaft is fixed on the aviation plug and the position is fixed, the first steel wire flexible shaft and the plug The fixed end of the pin will move in the direction away from the sleeve, driving the latch to move into the sleeve, compressing the spring, separating the latch from the limit part, releasing the limit of the rotating cam, allowing the rotating cam to rotate clockwise, rotating the switch connecting rod, driving the rotating cam to rotate 90° clockwise. At this time, the circuit breaker is in a closed state, the rotating cam rotates clockwise, the limit of the rotating plate by the stopper is released, and the pressing block rotates clockwise under the restoring force of the torsion spring, driving the second steel wire flexible shaft to drive the rotating plate to rotate clockwise, and the pressing block rotates clockwise under the restoring force of the torsion spring, and the end face of the pressing block falls on the aviation plug, limiting the aviation plug from being pulled out. Even in the case of misoperation, forcibly pulling the aviation plug out will not cause deformation of the pressing block, and will not affect the normal operation of the aviation plug linkage mechanism.

[0021] When the power is suddenly cut off, the circuit breaker will trip for protection. At this time, if the aviation plug needs to be unplugged, the circuit breaker must be reset to the open state. In actual use, in order to reset the circuit breaker to the open state after the sudden power failure and tripping, the circuit breaker must be rotated 90° counterclockwise and then continued to rotate 30° to reset. The switch connecting rod drives the rotating cam to rotate counterclockwise, and the stopper drives the rotating plate to rotate together. The rotating plate drives the second steel wire soft shaft to continue to pull the tension spring to move, thereby driving the pressing block to rotate. During the rotation of the pressing block, since the other end of the torsion spring is fixed on the mounting plate, the pressing block cannot continue to rotate after rotating a certain angle. At this time, the tension spring can be in a stretched state under the pulling of the second steel wire soft shaft, so that the rotating plate can still rotate, that is, the rotating cam can still rotate, thereby ensuring that the circuit breaker on the switch connecting rod can continue to rotate 30° after rotating 90° counterclockwise. The tension spring is used in the present invention. During normal use, the tension spring does not work and is only subjected to force when the circuit breaker is tripped for protection.

[0022] Compared with the prior art, the advantage of the present invention is that when the operator mistakenly performs multiple plugging and unplugging operations on the plug when the circuit breaker is closed, the aviation plug will not collide with the pressure block and will not cause excessive bending deformation to the pressure block; in addition, when using the circuit breaker, according to the power-off tripping protection performance of the circuit breaker, it can be ensured that the circuit breaker can continue to rotate 30° after rotating 90° counterclockwise. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an aerial plug linkage mechanism for a circuit breaker in an open state according to the present invention;

[0024] Figure 2 It is a structural schematic diagram of an aviation plug linkage mechanism for a circuit breaker in a closed state according to the present invention;

[0025] Figure 3 It is a structural schematic diagram of the rotation limit assembly in the open state;

[0026] Figure 4 for Figure 3 A cross-sectional view of

[0027] Figure 5 It is a structural schematic diagram of the rotation limit assembly in the closed state;

[0028] Figure 6 for Figure 5 A cross-sectional view of

[0029] Figure 7 It is a structural schematic diagram of an aviation plug linkage mechanism for a circuit breaker in a circuit breaker tripping protection state according to the present invention;

[0030] Figure 8is a schematic diagram of the structure of the rotating assembly;

[0031] Fig. 9 It is a partial structural diagram of the aviation plug limit assembly;

[0032] Fig.10 It is a partial structural schematic diagram of the rotation limit assembly;

[0033] Fig.11 for Fig.10 sectional view of .

[0034] 1. Fixing plate; 11. Mounting hole; 2. Mounting plate; 21. Second through hole; 3. Rotating assembly; 31. Rotating cam; 311. Limiting part; 312. First limiting hole; 313. First protrusion; 314. Second protrusion; 315. Threaded hole; 32. Switch connecting rod; 33. Rotating plate; 331. First through hole; 332. Plate body; 333. Extension plate; 34. First pressing plate; 341. Third through hole; 35. Second pressing plate; 351. First folding plate; 352. Second folding plate; 353. Fourth through hole; 36. Positioning sleeve; 361. Second limiting hole; 37. Stop member; 371, stop block; 4, rotation limit assembly; 41, sleeve; 411, movable hole; 42, latch; 43, spring; 44, first steel wire flexible shaft; 45, limit block; 451, channel; 46, flexible sleeve; 47, connecting threaded rod; 5, aviation plug and socket limit assembly; 51, second steel wire flexible shaft; 52, tension spring; 53, torsion spring; 54, pressure block; 55, rotating rod; 56, fixing seat; 57, hose; 58, fixing rod; 6, aviation plug and socket; 61, slider; 611, slot; 6111, perforation; 62, slideway; 7, aviation plug; 71, top block. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0036] like Figure 1 and 2 As shown, an aviation plug linkage mechanism for a circuit breaker of the present invention comprises a fixing plate 1, a mounting plate 2, a rotating assembly 3, a rotating limiting assembly 4 and an aviation plug socket limiting assembly 5.

[0037] The fixing plate 1 is provided with a mounting hole 11 penetrating therethrough, the aviation plug socket 6 is mounted on the mounting hole 11 , and the aviation plug 7 is inserted into the aviation plug socket 6 through the mounting hole 11 .

[0038] The rotating assembly 3 may include a rotating cam 31, a rotating plate 33 and a stopper 37. The rotating cam 31 and the rotating plate 33 are stacked on the mounting plate 2 in sequence. The rotating plate 33 is provided with a first through hole 331. The axis of the rotating cam 31 is provided with a first limiting hole 312. The mounting plate 2 is provided with a second through hole 21. The switch connecting rod 32 of the circuit breaker passes through the first through hole 331, the first limiting hole 312 and the second through hole 21 in sequence. The rotating cam 31 can rotate relative to the mounting plate, and the rotating plate can rotate relative to the rotating cam 31. The stopper 37 is fixed on the rotating cam 31, and is against or separated from the rotating plate 33 to limit the rotation of the rotating plate 33. A limiting portion 311 is provided on the side wall of the rotating cam 31.

[0039] The rotation limit assembly 4 includes a sleeve 41, a latch 42, a spring 43, a first steel wire flexible shaft 44, a limit block 45 and a flexible sleeve 46. The sleeve 41 is fixedly arranged on the mounting plate 2. One end of the sleeve 41 is provided with a movable hole 411 running through it. The latch 42 is slidably arranged in the movable hole 411. The other end of the sleeve 41 is open. The limit block 45 is detachably arranged at its open position. The spring 43 is arranged between the latch 42 and the limit block 45. The limit block 45 is provided with a channel 451 running through it. One end of the first steel wire flexible shaft 44 extends into the sleeve 41 through the channel 451 and is connected and fixed to the latch 42. A slideway 62 is provided on the aviation plug socket 6. A slider 61 is slidably arranged in the slideway 62. The slider 61 is away from the aviation plug socket A slot 611 is provided at one end of the seat 6, and a through hole 6111 is provided in the slot 611 passing through the slot 611. The other end of the first steel wire flexible shaft 44 passes through the through hole 6111 and is connected and fixed to the aviation plug socket 6. A top block 71 is provided on the aviation plug plug 7. The flexible sleeve 46 is sleeved on the outside of the first steel wire flexible shaft 44. One end of the flexible sleeve 46 is inserted in the slot 611, and its end is against the slider 61, and the other end is inserted in the sleeve 41. The aviation plug 7 is inserted into the aviation plug socket 6, and the top block 71 pushes the slider 61 to slide outward, the flexible sleeve 46 bends, and the first steel wire flexible shaft 44 pulls the pin 42 to slide into the sleeve 41. The pin 42 can move to abut or separate from the limiting portion 311 to limit or allow the rotating cam 31 to rotate clockwise.

[0040] The aviation plug socket limit assembly 5 includes a second steel wire flexible shaft 51, a tension spring 52, a torsion spring 53, a pressure block 54, and a rotating rod 55. The rotating rod 55 is vertically fixed on the fixed plate 1, the pressure block 54 is rotatably set on the rotating rod 55, and the torsion spring 53 is sleeved on the rotating rod 55. One end of the torsion spring 53 is fixed on the fixed plate 1, and the other end is against the pressure block 54. The pressure block 54 rotates counterclockwise to compress the torsion spring 53. One end of the tension spring 52 is connected to the pressure block 54, and the other end is connected to one end of the second steel wire flexible shaft 51. The other end of the second steel wire flexible shaft 51 is connected and fixed to the rotating plate 33. The rotating cam 31 rotates clockwise, and the torsion spring 53 drives the pressure block 54 to rotate clockwise and press on the aviation plug socket 6. The second steel wire flexible shaft 51 drives the rotating plate 33 to rotate clockwise.

[0041] The operation process of the aerial plug linkage mechanism for a circuit breaker of the present invention is as follows:

[0042] like Figure 3 and 4 As shown, the circuit breaker is in the open state, the aviation plug 7 is not inserted into the aviation plug socket 6, the pin 42 is against the limit portion 311, and the pin 42 blocks the rotating cam 31 from rotating clockwise. At this time, the circuit breaker cannot be closed. Under the pulling force of the second steel wire flexible shaft 51, the torsion spring 53 is compressed, and the end face of the pressure block 54 is away from the notch position of the aviation plug socket 6, so that the aviation plug 7 can be smoothly inserted into the aviation plug socket 6.

[0043] like Figure 5 and 6 As shown, when the aviation plug 7 is inserted into the aviation plug socket 6, the top block 71 on the aviation plug 7 pushes the slider 61 to move outward, and the slider 61 applies an outward force to one end of the flexible sleeve 46, and the flexible sleeve 46 slides relative to the first steel wire flexible shaft 44. Since the other end of the flexible sleeve 46 is inserted into the channel 451, the flexible sleeve 46 will bend, and the first steel wire flexible shaft 44 will bend with the flexible sleeve 46. Since the other end of the first steel wire flexible shaft 44 is fixed on the aviation plug 7 and the position is fixed, the end of the first steel wire flexible shaft 44 connected and fixed to the pin 42 will move in the direction away from the sleeve 41, driving the pin 42 to move into the sleeve 41, compressing the spring 43, and the pin 42 is separated from the limiting portion 311. The limit of the rotating cam 31 is released, allowing the rotating cam 31 to rotate clockwise, rotating the switch connecting rod 32, driving the rotating cam 31 to rotate 90° clockwise, at this time the circuit breaker is in the closed state, the rotating cam 31 rotates clockwise, the limit of the stopper 37 on the rotating plate 33 is released, the pressing block 54 rotates clockwise under the restoring force of the torsion spring 53, driving the second steel wire flexible shaft 51 to drive the rotating plate 33 to rotate clockwise, the pressing block 54 rotates clockwise under the restoring force of the torsion spring 53, the end face of the pressing block 54 falls on the aviation plug 7, limiting the aviation plug 7 from being pulled out, even in the case of misoperation, forcibly pulling the aviation plug 7 out will not cause deformation of the pressing block 54, and will not affect the normal operation of the aviation plug linkage mechanism.

[0044] like Figure 7As shown, when the power is suddenly cut off, the circuit breaker will trip for protection. At this time, if the aviation plug 7 needs to be unplugged, the circuit breaker must be reset to the open state. In actual use, in order to reset the circuit breaker to the open state after the sudden power outage, the circuit breaker must be rotated 90° counterclockwise and then continued to rotate 30° to reset. The switch connecting rod 32 drives the rotating cam 31 to rotate counterclockwise, and the blocking member 37 drives the rotating plate 33 to rotate together. The rotating plate 33 drives the second steel wire soft shaft 51 to continue to pull the tension spring 52 to move, thereby driving the pressing block 54 to rotate. During the rotation of the block 54, since the other end of the torsion spring 53 is fixed on the mounting plate 2, the pressing block 54 cannot continue to rotate after rotating a certain angle. At this time, the tension spring 52 can be in a stretched state under the pulling of the second steel wire flexible shaft 51, so that the rotating plate 33 can still rotate, that is, the rotating cam 31 can still rotate, thereby ensuring that the circuit breaker can continue to rotate 30° after rotating 90° counterclockwise. The tension spring 52 is used in the present invention. During normal use, the tension spring 52 does not work and is only subjected to force when the circuit breaker is tripped.

[0045] Compared with the prior art, the advantage of the present invention is that when the operator mistakenly performs multiple plugging and unplugging operations on the plug when the circuit breaker is closed, the aviation plug 7 will not collide with the pressure block 54, and will not cause excessive bending deformation to the pressure block 54; in addition, when using the circuit breaker, according to the power-off tripping protection performance of the circuit breaker, it can be ensured that the circuit breaker can continue to rotate 30° after rotating 90° counterclockwise.

[0046] The aviation plug socket limit assembly 5 may further include two fixing seats 56 and a hose 57 . The hose 57 is sleeved outside the second steel wire flexible shaft 51 . Both ends of the hose 57 are fixedly arranged on the fixing plate 1 and the mounting plate 2 through the two fixing seats 56 .

[0047] like Figure 8 As shown, the rotating cam 31 is stacked on the mounting plate 2 and can rotate relative to the mounting plate driven by the switch link 32. The rotating plate 33 is stacked on the rotating cam 31 and can rotate relative to the rotating cam 31. To facilitate its rotation, the lower plate surface of the rotating cam 31 can be provided with a first protrusion 313 protruding downward, and the upper plate surface of the rotating cam 31 is provided with a second protrusion 314 protruding upward. The first protrusion 313 and the second protrusion 314 are cylindrical, and the central axes of the first protrusion 313 and the second protrusion 314 coincide with the central axis of the rotating cam 31. The first limiting hole 312 passes through the first protrusion 313 and the second protrusion 314. The first protrusion 313 can be rotatably inserted in the second through hole 21, and the second protrusion 314 can be rotatably inserted in the first through hole 331.

[0048] There are many shapes of the rotating plate 33, which are not limited here. In the present embodiment, the rotating plate 33 may include a plate body 332 and two extension plates 333 extending outwardly from the plate body 332. The two extension plates 333 are on the same straight line. The stopper 37 may include two stop blocks 371. The two stop blocks 371 are both fixedly disposed on the upper plate surface of the rotating cam 31 and are on the same straight line. The straight line passes through the center point of the first through hole 331. The stop block 371 is disposed on the trajectory of the clockwise rotation of the rotating plate 33. When the circuit breaker is opened, the rotating cam 31 does not rotate, and the stop block 371 also abuts against the extension plate 333. The rotating plate 33 cannot rotate clockwise. The pressing block is moved away from the notch of the aviation socket under the action of the second steel wire flexible shaft.

[0049] Further, the rotating assembly 3 may also include a first pressing plate 34, a second pressing plate 35 and a positioning sleeve 36, wherein the first pressing plate 34 is arranged above the rotating plate 33 and is connected and fixed to the upper plate surface of the rotating cam 31, the first pressing plate 34 does not contact the rotating plate 33, the second pressing plate 35 is stacked on the first pressing plate 34, the second pressing plate 35 is connected and fixed to the mounting plate, the first pressing plate 34 is provided with a third through hole 341, the second pressing plate 35 is provided with a fourth through hole 353, the positioning sleeve 36 is inserted in the third through hole 341 and the fourth through hole 353, and can rotate relative to the third through hole 341 and the fourth through hole 353, the positioning sleeve 36 is provided with a second limiting hole 361, and the switch connecting rod 32 is inserted in the first limiting hole 312 by the second limiting hole 361. The axial movement of other components of the rotating assembly 3 is limited by the second pressing plate 35, and the outer shapes of the switch connecting rods of different circuit breaker models are different, and here only the positioning sleeve 36 and the rotating cam 31 need to be replaced.

[0050] There are many ways to fix the first pressure plate 34 on the rotating cam 31. In this embodiment, the thickness of the stop block 371 is greater than the thickness of the rotating plate 33. The first pressure plate 34 is placed on the stop block 371. The upper plate surface of the rotating cam 31 is provided with two threaded holes 315. The two threaded holes 315 are located below the two stop blocks 371. The bolts pass through the first pressure plate 34 and the stop block 371 in turn and are screwed into the threaded holes 315.

[0051] There are many structures of the second pressure plate 35, which are not limited here. In this embodiment, the two ends of the second pressure plate 35 are provided with first folding plates 351 extending downward, and the lower end of the first folding plate 351 is provided with a second folding plate 352 extending horizontally. The second folding plate 352 is fixed to the mounting plate 2 by bolts.

[0052] like Fig. 9 As shown, one end of the torsion spring 53 can be fixed on the fixing plate 1 through a fixing rod 58 . The fixing rod 58 is vertically arranged on the fixing plate 1 , and one end of the torsion spring 53 is fixed on the fixing rod 58 .

[0053] like Fig.10 and 11 As shown, there are many ways to detachably install the stopper 45 in the sleeve 41, which are not limited here. In one practicable manner, the other end of the sleeve 41 may be provided with an internal thread, one end of the stopper 45 may be provided with an external thread matching the internal thread, and the stopper 45 is screwed on the other end of the sleeve 41. The sleeve 41 may be fixed to the mounting plate 2 through a mounting seat, the sleeve 41 is fixedly arranged on the mounting seat, and the mounting seat is fixedly arranged on the mounting plate 2 by bolts.

[0054] There are many ways to connect and fix the first steel wire flexible shaft 44 to the pin 42. In this embodiment, one end of the first steel wire flexible shaft 44 can be fixed with a connecting threaded rod 47, and one end of the pin 42 located in the sleeve 41 is provided with a threaded connection hole, and the connecting threaded rod 47 is screwed in the threaded connection hole.

[0055] When the circuit breaker is in the open state, the torsion spring 53 is in a compressed state under the tension of the second steel wire flexible shaft 51. The compression force of the torsion spring 53 is less than the tension of the tension spring 52. Therefore, when the circuit breaker is in the open state, the tension spring 52 is in a free state and is not stretched. The tension spring 52 is used in the present invention. During normal use, the tension spring 52 may not work and will only be subjected to force when the circuit breaker is tripped for protection.

[0056] For matters not mentioned above, the prior art applies.

[0057] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art to which the present invention belongs may make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the present invention or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modifications, equivalent substitutions, improvements, etc. made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the present invention.

Claims

1. An aerial plug linkage mechanism for a circuit breaker, characterized in that: It comprises a fixing plate (1), a mounting plate (2), a rotating assembly (3), a rotating limiting assembly (4) and an aviation socket limiting assembly (5); The fixing plate (1) is provided with a mounting hole (11) penetrating therethrough, the aviation plug socket (6) is mounted on the mounting hole (11), and the aviation plug (7) is inserted into the aviation plug socket (6) through the mounting hole (11); The rotating assembly (3) comprises a rotating cam (31), a rotating plate (33) and a stopper (37). The rotating cam (31) and the rotating plate (33) are sequentially stacked on the mounting plate (2). The rotating plate (33) is provided with a first through hole (331). The axis of the rotating cam (31) is provided with a first limiting hole (312). The mounting plate (2) is provided with a second through hole (21). The switch connecting rod (32) of the circuit breaker passes through the first through hole (331), the first limiting hole (312) and the second through hole (21) in sequence. The rotating cam (31) can rotate relative to the mounting plate (2). The rotating plate (33) can rotate relative to the rotating cam (31). The stopper (37) is fixed on the rotating cam (31) and abuts against or separates from the rotating plate (33) to limit the rotation of the rotating plate (33). A limiting portion (311) is provided on the side wall of the rotating cam (31). The rotation limiting assembly (4) comprises a sleeve (41), a latch (42), a spring (43), a first steel wire flexible shaft (44), a limiting block (45) and a flexible sleeve (46); the sleeve (41) is fixedly arranged on the mounting plate (2); one end of the sleeve (41) is provided with a movable hole (411) penetrating the sleeve; the latch (42) is slidably arranged in the movable hole (411); the other end of the sleeve (41) is open; the limiting block (45) is detachable. The spring (43) is arranged at its open end, the spring (43) is arranged between the latch (42) and the limit block (45), the limit block (45) is provided with a channel (451) running through it, one end of the first steel wire flexible shaft (44) extends into the sleeve (41) through the channel (451) and is connected and fixed with the latch (42), the aviation plug socket (6) is provided with a slideway (62), a slider (61) is slidably provided in the slideway (62), and the slider (61) is away from One end of the aviation plug socket (6) is provided with a slot (611), and a through hole (6111) is provided in the slot (611) passing through it. The other end of the first steel wire flexible shaft (44) passes through the through hole (6111) and is connected and fixed to the aviation plug socket (6). The aviation plug (7) is provided with a top block (71). The flexible sleeve (46) is sleeved outside the first steel wire flexible shaft (44), and one end of the flexible sleeve (46) is inserted into the slot (611), and its end is connected to the aviation plug (7). The slider (61) is abutted against each other, and the other end is inserted into the sleeve (41). The aviation plug (7) is inserted into the aviation plug socket (6). The top block (71) pushes the slider (61) to slide outward, the flexible sleeve (46) is bent, and the first steel wire soft shaft (44) pulls the pin (42) to slide into the sleeve (41). The pin (42) can move to abut against or separate from the limiting portion (311) to limit or allow the rotating cam (31) to rotate clockwise; The aviation plug socket limit assembly (5) comprises a second steel wire flexible shaft (51), a tension spring (52), a torsion spring (53), a pressure block (54), and a rotating rod (55). The rotating rod (55) is vertically fixed on the fixed plate (1). The pressure block (54) is rotatably arranged on the rotating rod (55). The torsion spring (53) is sleeved on the rotating rod (55). One end of the torsion spring (53) is fixed on the fixed plate (1), and the other end is against the pressure block (54). The pressure block (54) ) rotates counterclockwise to compress the torsion spring (53), one end of the tension spring (52) is connected to the pressure block (54), and the other end is connected to one end of the second steel wire flexible shaft (51), the other end of the second steel wire flexible shaft (51) is fixedly connected to the rotating plate (33), the rotating cam (31) rotates clockwise, the torsion spring (53) drives the pressure block (54) to rotate clockwise and press on the aviation plug socket (6), and the second steel wire flexible shaft (51) drives the rotating plate (33) to rotate clockwise; The aviation socket limit assembly (5) further comprises two fixing seats (56) and a hose (57), wherein the hose (57) is sleeved outside the second steel wire flexible shaft (51), and the two ends of the hose (57) are respectively fixedly arranged on the fixing plate (1) and the mounting plate (2) through the two fixing seats (56); One end of the torsion spring (53) is fixed to the fixing plate (1) via a fixing rod (58).

2. The aerial plug linkage mechanism for a circuit breaker according to claim 1, characterized in that: The lower plate surface of the rotating cam (31) is provided with a first protruding portion (313) protruding downward, and the upper plate surface of the rotating cam (31) is provided with a second protruding portion (314) protruding upward, the first protruding portion (313) and the second protruding portion (314) are cylindrical, the central axes of the first protruding portion (313) and the second protruding portion (314) coincide with the central axis of the rotating cam (31), the first limiting hole (312) passes through the first protruding portion (313) and the second protruding portion (314), the first protruding portion (313) can be rotatably inserted in the second through hole (21), and the second protruding portion (314) can be rotatably inserted in the first through hole (331).

3. The aerial plug linkage mechanism for a circuit breaker according to claim 2, characterized in that: The rotating plate (33) comprises a plate body (332) and two extension plates (333) arranged on the plate body (332) and extending outward, wherein the two extension plates (333) are on the same straight line, and the stopper (37) comprises two stop blocks (371), wherein the two stop blocks (371) are both fixedly arranged on the upper plate surface of the rotating cam (31) and are on the same straight line, and the straight line passes through the center point of the first through hole (331), and the stop blocks (371) are arranged on the trajectory of the rotating plate (33) rotating clockwise.

4. The aerial plug linkage mechanism for a circuit breaker according to claim 3, characterized in that: The rotating assembly (3) further comprises a first pressing plate (34), a second pressing plate (35) and a positioning sleeve (36), wherein the first pressing plate (34) is arranged above the rotating plate (33) and is connected and fixed to the upper plate surface of the rotating cam (31), the first pressing plate (34) does not contact the rotating plate (33), the second pressing plate (35) is stacked on the first pressing plate (34), the second pressing plate (35) is connected and fixed to the mounting plate (2), and the first pressing plate (34) is fixed to the mounting plate (2). 4) is provided with a third through hole (341), the second pressure plate (35) is provided with a fourth through hole (353), the positioning sleeve (36) is inserted into the third through hole (341) and the fourth through hole (353), and can rotate relative to the third through hole (341) and the fourth through hole (353), the positioning sleeve (36) is provided with a second limiting hole (361), and the switch connecting rod (32) is inserted into the first limiting hole (312) through the second limiting hole (361).

5. The aerial plug linkage mechanism for a circuit breaker according to claim 4, characterized in that: The thickness of the stop block (371) is greater than the thickness of the rotating plate (33); the first pressure plate (34) is placed on the stop block (371); the upper plate surface of the rotating cam (31) is provided with two threaded holes (315); the two threaded holes (315) are located below the two stop blocks (371); bolts pass through the first pressure plate (34) and the stop block (371) in sequence and are screwed into the threaded holes (315).

6. The aerial plug linkage mechanism for a circuit breaker according to claim 5, characterized in that: The two ends of the second pressing plate (35) are provided with first folding plates (351) extending downwards, the lower end of the first folding plate (351) is provided with a second folding plate (352) extending horizontally, and the second folding plate (352) is fixed to the mounting plate (2) by bolts.

7. The aerial plug linkage mechanism for a circuit breaker according to claim 1, characterized in that: A connecting threaded rod (47) is fixedly provided at one end of the first steel wire flexible shaft (44), and a threaded connection hole is provided at one end of the latch pin (42) located in the sleeve (41), and the connecting threaded rod (47) is screwed in the threaded connection hole.

8. An aerial plug linkage mechanism for a circuit breaker according to any one of claims 1 to 7, characterized in that: The compression force of the torsion spring (53) is smaller than the tension force of the tension spring (52).

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