Aviation plug linkage mechanism for circuit breakerTechnical Field
The invention relates to the technical field of ship power grid equipment, in particular to an aviation plug linkage mechanism for a circuit breaker.
Background
The accident power grid equipment is mainly used when a daily power distribution system of the ship is damaged, and corresponding plug-in boxes are connected through a soft cable which is temporarily pulled and laid to be bridged on a damaged cabin section, so that temporary power is provided for important loads such as sailing and safety of the ship, and the vitality of the ship is improved. When the accident power grid equipment is used, the flexible cables with the electric connectors at the two ends are connected with the plug box and then electrified. In order to ensure the safety of the accident power grid equipment in use, a mechanical interlocking mechanism between the circuit breaker and the aviation plug socket is arranged in the plug-in box, when the aviation plug and the aviation plug socket are not reliably connected, a power switch cannot be closed, when the switch is closed, the aviation plug and the aviation plug socket cannot be subjected to plug-in operation, an operator can have misoperation in the long-time use process, the aviation plug is subjected to multiple plug-in operation in the switch-in state, mechanical faults can occur for a long time, the normal use of the plug-in box is influenced, most of the mechanical interlocking mechanism in the prior art has an insufficient application range, the circuit breaker can be tripped for protection under the condition of sudden power failure, if the switch is reset to the switch-off state again, the switch is required to be continuously rotated for about 30 degrees in the opposite direction, and the mechanical interlocking mechanism in the prior art cannot generally meet the condition.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an aviation plug linkage mechanism for a circuit breaker, which is wide in application type and durable.
The invention relates to an aviation plug linkage mechanism for a circuit breaker, which comprises a fixed plate, a mounting plate, a rotating assembly, a rotating limiting assembly and an aviation plug socket limiting assembly.
The fixing plate is provided with a mounting hole penetrating 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.
The rotary assembly comprises a rotary cam, a rotary plate and a resisting part, wherein the rotary cam and the rotary plate are sequentially stacked on the mounting plate, a first through hole is formed in the rotary plate, a first limiting hole is formed in the axis of the rotary cam, a second through hole is formed in the mounting plate, a switch connecting rod of the circuit breaker sequentially penetrates through the first through hole, the first limiting hole and the second through hole, the rotary cam can rotate relative to the mounting plate, the rotary plate can rotate relative to the rotary cam, the resisting part is fixedly arranged on the rotary cam and is abutted or separated from the rotary plate to limit the rotary plate to rotate, and a limiting part is arranged on the side wall of the rotary cam.
The rotary limiting assembly comprises a sleeve, a bolt, a spring, a first steel wire flexible shaft, a limiting block and a flexible sleeve, wherein the sleeve is fixedly arranged on the mounting plate, one end of the sleeve is provided with a movable hole penetrating through the sleeve, the bolt is slidably arranged in the movable hole, the other end of the sleeve is open, the limiting block is detachably arranged at the open position of the limiting block, the spring is arranged between the bolt and the limiting block, the limiting block is provided with a channel penetrating through the limiting block, one end of the first steel wire flexible shaft extends into the sleeve from the channel to be fixedly connected with the bolt, a slide way is arranged on the aerial socket, a sliding block is slidably arranged in the slide way, one end of the sliding block, far away from the aerial socket, is provided with a through hole penetrating through the slide way, the other end of the first steel wire flexible shaft penetrates through the through hole to be fixedly connected with the aerial socket, the aerial socket is provided with a top block, the flexible sleeve is sleeved outside the first steel wire flexible shaft, one end of the flexible sleeve is inserted into the slot, the other end of the flexible sleeve abuts against the sliding block, the sliding block is arranged in the sleeve, the sliding block is rotatably pushed by the aerial socket, and the sliding sleeve is rotatably pushed by the sliding block to be separated from the aerial socket, or is allowed to move inwards by the sliding sleeve, and the sliding block is allowed to rotate downwards to be bent outwards;
the utility model provides a socket spacing subassembly is inserted to space includes second steel wire flexible axle, extension spring, torsional spring, briquetting, bull stick, the bull stick vertical fixation is in on the fixed plate, the rotatable setting of briquetting is in on the bull stick, the torsional spring cover is established on the bull stick, the one end of torsional spring is fixed on the fixed plate, the other end with the briquetting offsets, the anticlockwise rotatory compression of briquetting the torsional spring, the one end of extension spring with the briquetting is connected, the other end with the one end of second steel wire flexible axle is connected, the other end of second steel wire flexible axle with the swivel plate is connected fixedly, rotatory cam clockwise rotation, the torsional spring drive the briquetting clockwise rotation presses on the socket, and the second steel wire flexible axle drives the swivel plate clockwise rotation.
Further, the space-saving assembly of the aviation plug socket further comprises two fixing seats and a hose, the hose is sleeved outside the second steel wire flexible shaft, and two ends of the hose are fixedly arranged on the fixing plate and the mounting plate through the two fixing seats respectively.
Further, the lower face of the rotary cam is provided with a first protruding portion protruding downwards, the upper face of the rotary cam is provided with a second protruding portion protruding upwards, the first protruding portion and the second protruding portion are cylindrical, the central axes of the first protruding portion and the second protruding portion coincide with the central axis of the rotary cam, the first limiting hole penetrates through the first protruding portion and the second protruding portion, the first protruding portion is rotatably inserted into the second through hole, and the second protruding portion is rotatably inserted into the first through hole.
Further, the rotating plate comprises a plate body and two extending plates which are arranged on the plate body and extend outwards, the two extending plates are arranged on the same straight line, the resisting piece comprises two resisting blocks, the two resisting blocks are fixedly arranged on the upper plate surface of the rotating cam and on the same straight line, the straight line passes through the center point of the first through hole, and the resisting blocks are arranged on the track of clockwise rotation of the rotating plate.
Further, the rotating assembly further comprises a first pressing plate, a second pressing plate and a positioning sleeve, the first pressing plate is arranged above the rotating plate and is fixedly connected with the upper plate surface of the rotating cam, the first pressing plate is not in contact with the rotating plate, the second pressing plate is stacked on the first pressing plate and is fixedly connected with the mounting plate, a third through hole is formed in the first pressing plate, a fourth through hole is formed in the second pressing plate, the positioning sleeve is inserted into the third through hole and the fourth through hole and can rotate relative to the third through hole and the fourth through hole, a second limiting hole is formed in the positioning sleeve, and the switch connecting rod is inserted into the first limiting hole through the second limiting hole.
Further, the thickness of the blocking block is larger than that of the rotating plate, the first pressing plate is placed on the blocking block, two threaded holes are formed in the upper plate surface of the rotating cam, the two threaded holes are located below the two blocking blocks, and bolts sequentially penetrate through the first pressing plate and the blocking blocks to be screwed into the threaded holes.
Further, the both ends of second clamp plate are equipped with downwardly extending's first folded sheet, first folded sheet lower extreme is equipped with the second folded sheet of horizontal extension, the second folded sheet passes through the bolt fastening on the mounting panel.
Further, one end of the torsion spring is fixed on the fixing plate through a fixing rod.
Further, an internal thread is arranged in the other end of the sleeve, an external thread matched with the internal thread is arranged at one end of the limiting block, and the limiting block is screwed at the other end of the sleeve.
Further, one end of the first steel wire flexible shaft is fixedly provided with a connecting threaded rod, one end of the bolt, which is positioned in the sleeve, is provided with a threaded connecting hole, and the connecting threaded rod is screwed in the threaded connecting hole.
Further, the compression force of the torsion spring is smaller than the tension force of the tension spring.
The operation process of the aviation plug linkage mechanism for the circuit breaker is as follows:
The circuit breaker is in a breaking state, the aviation plug is not inserted into the aviation socket, the bolt is propped against the limiting part, the bolt blocks the rotating cam to rotate clockwise, at the moment, the circuit breaker cannot be closed, under the tension of the second steel wire flexible shaft, the torsion spring is compressed, the end face of the pressing block is far away from the opening position of the aviation socket, the aviation plug can be smoothly inserted into the aviation socket, when the aviation plug is inserted into the aviation socket, the pushing block on the aviation plug pushes the sliding block to move outwards, the sliding block gives one end of the flexible sleeve an outward acting force, the flexible sleeve slides relative to the first steel wire flexible shaft, and because the other end of the flexible sleeve is inserted in the channel, the flexible sleeve can be bent, the first steel wire flexible shaft follows the flexible sleeve to be bent, and because the other end of the first steel wire flexible shaft is fixed on the aviation plug, the position is fixed, therefore, one end of the first steel wire flexible shaft, which is fixedly connected with the bolt, can move towards the direction away from the sleeve, the bolt is driven to move inwards the sleeve, the spring is compressed, the bolt is separated from the limiting part, the limit of the rotary cam is relieved, the rotary cam is allowed to rotate clockwise, the switch connecting rod is rotated, the rotary cam is driven to rotate clockwise by 90 degrees, the circuit breaker is in a closing state, the rotary cam rotates clockwise, the blocking piece is used for limiting the rotating plate, the pressing block rotates clockwise under the restoring force of the torsion spring, the second steel wire flexible shaft is driven to drive the rotating plate to rotate clockwise, the pressing block rotates clockwise under the restoring force of the torsion spring, the end face of the pressing block falls on the aerial plug, the aerial plug is limited to be pulled outwards, the aerial plug is not deformed, and the normal work of the aerial plug linkage mechanism is not influenced even under the misoperation condition that the aerial plug is forced to be pulled outwards.
And when the circuit breaker is suddenly powered off, the circuit breaker can be tripped for protection, at the moment, if the aviation plug needs to be pulled out, the circuit breaker must be reset to a brake-separating state, in the process of resetting the circuit breaker after the sudden power off and tripping to the brake-separating state in actual use, the circuit breaker must be rotated anticlockwise by 90 degrees and then continuously rotated for 30 degrees, the switch connecting rod drives the rotating cam to rotate anticlockwise, the resisting piece drives the rotating plate to rotate together, the rotating plate drives the second steel wire flexible shaft to continuously pull the tension spring to move, thereby driving the pressing block to rotate, in the rotating process of the pressing block, because the other end of the torsion spring is fixed on the mounting plate, the pressing block cannot continuously rotate after rotating by a certain angle, at this time, the tension spring can be in a stretching state under the pulling of the second steel wire flexible shaft, so that the rotating plate can still rotate, namely the rotating cam can still rotate, thereby ensuring that the circuit breaker on the switch connecting rod can rotate anticlockwise by 90 degrees and then continuously rotate for 30 degrees.
Compared with the prior art, the invention has the advantages that when an operator performs repeated plugging and unplugging misoperation on the plug under the state of closing the circuit breaker, the aviation plug cannot collide with the pressing block and cannot generate excessive bending deformation on the pressing block, and in addition, when the circuit breaker is used, according to the power-off tripping protection performance of the circuit breaker, the circuit breaker can be ensured to rotate anticlockwise by 90 degrees and then can continue to rotate by 30 degrees.
Drawings
Fig. 1 is a schematic structural view of an air-plug linkage mechanism for a circuit breaker in a breaking state according to the present invention;
Fig. 2 is a schematic structural view of an aerial plug linkage mechanism for a circuit breaker in a closed state according to the present invention;
FIG. 3 is a schematic view of the rotation limiting assembly in a brake-off state;
FIG. 4 is a cross-sectional view of FIG. 3;
fig. 5 is a schematic structural view of the rotation limiting assembly in a closed state;
FIG. 6 is a cross-sectional view of FIG. 5;
fig. 7 is a schematic structural view of an air-plug linkage mechanism for a circuit breaker in a circuit breaker trip protection state according to the present invention;
FIG. 8 is a schematic structural view of a rotating assembly;
FIG. 9 is a schematic view of a portion of an aerial plug spacing assembly;
FIG. 10 is a schematic view of a portion of a rotational stop assembly;
fig. 11 is a cross-sectional view of fig. 10.
1. The fixing plate, 11, the mounting hole, 2, the mounting plate, 21, the second through hole, 3, the rotating component, 31, the rotating cam, 311, the limiting part, 312, the first limiting hole, 313, the first protruding part, 314, the second protruding part, 315, the threaded hole, 32, the switch connecting rod, 33, the rotating plate, 331, the first through hole, 332, the plate body, 333, the extension plate, 34, the first pressing plate, 341, the third through hole, 35, the second pressing plate, 351, the first folded plate, 352, the second folded plate, 353, the fourth through hole, 36, the locating sleeve, 361, the second limiting hole, 37, the retaining part, 371, the abutting block, 4, the rotating limiting component, 41, the sleeve, 411, the movable hole, 42, the bolt, 43, the spring, 44, the first steel wire flexible shaft, 45, the limiting block, 451, the channel, 46, the flexible sleeve, 47, the connecting threaded rod, 5, the aviation plug limiting component, 51, the second steel wire flexible shaft, 52, the tension spring, 53, the torsion spring, 54, the pressing block, 55, 56, 57, the fixing seat, 58, the flexible shaft, 61, the fixing seat, 61, the sliding block, 11, the sliding block.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, an aerial plug linkage mechanism for a circuit breaker of the present invention includes a fixed plate 1, a mounting plate 2, a rotating assembly 3, a rotating limiting assembly 4 and an aerial plug socket limiting assembly 5.
The fixing plate 1 is provided with a mounting hole 11 penetrating the fixing plate, 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 may include a rotating cam 31, a rotating plate 33 and a resisting member 37, where 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 sequentially passes through the first through hole 331, the first limiting hole 312 and the second through hole 21, the rotating cam 31 can rotate relative to the mounting plate, the rotating plate can rotate relative to the rotating cam 31, the resisting member 37 is fixedly arranged on the rotating cam 31 and resists or separates from the rotating plate 33 to limit the rotation of the rotating plate 33, and the side wall of the rotating cam 31 is provided with a limiting part 311.
The rotation limiting assembly 4 comprises a sleeve 41, a bolt 42, a spring 43, a first steel wire flexible shaft 44, a limiting block 45 and a flexible sleeve 46, wherein the sleeve 41 is fixedly arranged on a mounting plate 2, one end of the sleeve 41 is provided with a movable hole 411 penetrating through the sleeve 41, the bolt 42 is slidably arranged in the movable hole 411, the other end of the sleeve 41 is open, the limiting block 45 is detachably arranged at the open position of the limiting block, the spring 43 is arranged between the bolt 42 and the limiting block 45, the limiting block 45 is provided with a channel 451 penetrating through the limiting block 45, one end of the first steel wire flexible shaft 44 extends into the sleeve 41 from the channel 451 to be fixedly connected with the bolt 42, a slide way 62 is arranged on the aviation socket 6, a sliding block 61 is slidably arranged in the slide way 62, one end of the sliding block 61 away from the aviation socket 6 is provided with a slot 611, the other end of the first steel wire flexible shaft 44 penetrates through the through hole 6111 to be fixedly connected with the aviation socket 6, a top block 71 is arranged on the aviation socket 7, the flexible sleeve 46 is sleeved outside the first steel wire flexible shaft 44, one end of the flexible sleeve 46 is inserted into the slot 611, the end of the flexible sleeve is abutted against the sliding block 61, the other end of the sliding block 41 is abutted against the sliding block 31 in the sleeve 31, the sliding block 31 is rotatably limited to rotate clockwise, and the sliding block 31 is abutted against the flexible shaft 31 or is separated from the sliding block 42, and the sliding block is allowed to rotate clockwise to rotate towards the flexible sleeve 42.
The avionics socket limiting assembly 5 comprises a second steel wire flexible shaft 51, a tension spring 52, a torsion spring 53, a pressing block 54 and a rotating rod 55, wherein the rotating rod 55 is vertically fixed on the fixed plate 1, the pressing 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, the other end of the torsion spring abuts against the pressing block 54, the pressing block 54 rotates anticlockwise to compress the torsion spring 53, one end of the tension spring 52 is connected with the pressing block 54, the other end of the tension spring 52 is connected with one end of the second steel wire flexible shaft 51, the other end of the second steel wire flexible shaft 51 is fixedly connected with the rotating plate 33, the rotating cam 31 rotates clockwise, the pressing block 54 is driven by the torsion spring 53 to rotate clockwise and is pressed on the avionically socket 6, and the rotating plate 33 is driven by the second steel wire flexible shaft 51 to rotate clockwise.
The operation process of the aviation plug linkage mechanism for the circuit breaker is as follows:
as shown in fig. 3 and 4, the circuit breaker is in a breaking state, the plug 7 is not inserted into the socket 6, the pin 42 abuts against the limiting part 311, the pin 42 blocks the rotating cam 31 from rotating clockwise, at this time, the circuit breaker cannot be closed, the torsion spring 53 compresses under the tension of the second steel wire flexible shaft 51, the end face of the pressing block 54 is far away from the opening position of the socket 6, and the plug 7 can be smoothly inserted into the socket 6.
As shown in fig. 5 and 6, when the aviation plug 7 is inserted into the aviation plug socket 6, the ejector block 71 on the aviation plug 7 pushes the sliding block 61 to move outwards, the sliding block 61 gives an outwards acting force to one end of the flexible sleeve 46, the flexible sleeve 46 slides relative to the first steel wire flexible shaft 44, and because the other end of the flexible sleeve 46 is inserted into the channel 451, the flexible sleeve 46 can be bent, the first steel wire flexible shaft 44 bends along with the flexible sleeve 46, because the other end of the first steel wire flexible shaft 44 is fixed on the aviation plug 7, the position is fixed, one end of the first steel wire flexible shaft 44, which is fixedly connected with the plug pin 42, moves in a direction away from the sleeve 41, the plug pin 42 is driven to move inwards the sleeve 41, the compression spring 43, the plug pin 42 is separated from the limiting part 311, the limit of the rotary cam 31 is released, the rotary cam 31 is allowed to rotate clockwise, the rotary switch connecting rod 32 is driven to rotate clockwise by 90 degrees, at the moment, the circuit breaker is in a closing state, the resisting piece 37 rotates clockwise to limit the rotary plate 33, the pressing block 54 rotates clockwise under the acting force of the torsion spring 53, the restoring force of the second steel wire flexible shaft 44 is fixed on the aviation plug 7, the direction is fixed, the direction of the push block 54 is not pulled out of the rotary block 54 is also influenced by the clockwise, the force of the clockwise rotating plug 7, and the plug is not normally pulled out of the plug pin is deformed, and the plug 54 is pulled out, even if the plug 7 is pushed out of the clockwise, and the plug is pulled out by the force of the rotary block 54 is pushed out.
As shown in fig. 7, when the circuit breaker is suddenly powered off, the circuit breaker will trip to protect, if the aviation plug 7 needs to be pulled out, the circuit breaker must be reset to the opening state, in the process of resetting the circuit breaker after sudden power off to the opening state in actual use, the circuit breaker must be rotated 90 ° counterclockwise and then rotated 30 ° continuously, the switch connecting rod 32 drives the rotating cam 31 to rotate counterclockwise, the resisting piece 37 drives the rotating plate 33 to rotate together, the rotating plate 33 drives the second steel wire flexible shaft 51 to continuously pull the tension spring 52 to move, thereby driving the pressing block 54 to rotate, in the rotating process of the pressing block 54, since the other end of the torsion spring 53 is fixed on the mounting plate 2, the pressing block 54 cannot continuously rotate after rotating by a certain angle, at this time, the tension spring 52 can be in a stretched state under the pulling of the second steel wire 51, so that the rotating plate 33 can still rotate, that the rotating cam 31 can still rotate counterclockwise by 30 ° continuously, thereby ensuring that the circuit breaker can still rotate counterclockwise by 90 °, in the invention, the tension spring 52 is adopted, and when the circuit breaker is normally not stressed, the circuit breaker is not tripped.
Compared with the prior art, the invention has the advantages that when an operator performs repeated plugging and unplugging misoperation on the plug in a state that the breaker is closed, the aerial plug 7 cannot collide with the pressing block 54 and cannot generate excessive bending deformation on the pressing block 54, and in addition, when the breaker is used, according to the power-off tripping protection performance of the breaker, the breaker can be ensured to rotate anticlockwise by 90 degrees and then can continue to rotate by 30 degrees.
The space-limiting assembly 5 of the aviation socket can further comprise two fixing seats 56 and a hose 57, the hose 57 is sleeved outside the second steel wire flexible shaft 51, and two ends of the hose 57 are fixedly arranged on the fixing plate 1 and the mounting plate 2 through the two fixing seats 56 respectively.
As shown in fig. 8, the rotating cam 31 is stacked on the mounting plate 2, and driven by the switch link 32 to rotate relative to the mounting plate, the rotating plate 33 is stacked on the rotating cam 31 and can rotate relative to the rotating cam 31, for convenience of rotation, a lower plate surface of the rotating cam 31 may be provided with a first protruding portion 313 protruding downwards, an upper plate surface of the rotating cam 31 is provided with a second protruding portion 314 protruding upwards, the first protruding portion 313 and the second protruding portion 314 are cylindrical, central axes of the first protruding portion 313 and the second protruding portion 314 coincide with a central axis of the rotating cam 31, the first limiting hole 312 penetrates through the first protruding portion 313 and the second protruding portion 314, the first protruding portion 313 is rotatably inserted in the second through hole 21, and the second protruding portion 314 is rotatably inserted in the first through hole 331.
The shape of the rotating plate 33 is various, but not limited to, in this embodiment, the rotating plate 33 may include a plate body 332 and two extending plates 333 disposed on the plate body 332 and extending outwards, the two extending plates 333 are on the same line, the retaining member 37 may include two retaining blocks 371, the two retaining blocks 371 are fixedly disposed on the upper plate surface of the rotating cam 31 and on the same line, the line passes through the center point of the first through hole 331, the retaining blocks 371 are disposed on the clockwise rotating track of the rotating plate 33, when the circuit breaker is opened, the rotating cam 31 does not rotate, the retaining blocks 371 also abut against the extending plates 333, the rotating plate 33 cannot rotate clockwise, and the pressing block is far away from the notch of the socket under the action of the second wire flexible shaft.
Further, the rotating assembly 3 may further include a first pressing plate 34, a second pressing plate 35 and a positioning sleeve 36, where the first pressing plate 34 is disposed above the rotating plate 33 and is connected and fixed with the upper plate surface of the rotating cam 31, the first pressing plate 34 is not in contact with 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 with 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 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, a second limiting hole 361 is disposed in the positioning sleeve 36, and the switch connecting rod 32 is inserted into the first limiting hole 312 through the second limiting hole 361. The second pressure plate 35 limits the axial movement of other parts of the rotary assembly 3, and the external shape of the switch link of different breaker types is different, only the positioning sleeve 36 and the rotary cam 31 need to be replaced.
The first pressing plate 34 is fixedly arranged on the rotating cam 31 in various manners, in this embodiment, the thickness of the blocking block 371 is larger than that of the rotating plate 33, the first pressing plate 34 is placed on the blocking block 371, two threaded holes 315 are formed in the upper plate surface of the rotating cam 31, the two threaded holes 315 are located below the two blocking blocks 371, and bolts sequentially penetrate through the first pressing plate 34 and the blocking blocks 371 to be screwed into the threaded holes 315.
The second pressing plate 35 has various structures, but is not limited thereto, in this embodiment, two ends of the second pressing plate 35 are provided with a first folding plate 351 extending downward, a second folding plate 352 extending horizontally is provided at a lower end of the first folding plate 351, and the second folding plate 352 is fixed on the mounting plate 2 by bolts.
As shown in fig. 9, one end of the torsion spring 53 may be fixed to the fixing plate 1 by a fixing lever 58, the fixing lever 58 being vertically provided on the fixing plate 1, and one end of the torsion spring 53 being fixed to the fixing lever 58.
As shown in fig. 10 and 11, there are various ways in which the stopper 45 may be detachably mounted in the sleeve 41, and in one embodiment, the other end of the sleeve 41 may be internally provided with an internal thread, one end of the stopper 45 is 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 can be fixed on 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 through bolts.
There are various manners in which the first wire flexible shaft 44 is fixedly connected to the plug pin 42, in this embodiment, one end of the first wire flexible shaft 44 may be fixedly provided with a connection threaded rod 47, one end of the plug pin 42 located in the sleeve 41 is provided with a threaded connection hole, and the connection threaded rod 47 is screwed in the threaded connection hole.
When the breaker is in the opening state, the torsion spring 53 is in a compressed state under the tension of the second steel wire flexible shaft 51, and the compression force of the torsion spring 53 is smaller than the tension force of the tension spring 52, so that when the breaker is in the opening state, the tension spring 52 is in a free state and is not stretched, and the tension spring 52 is adopted in the invention, and can not work during normal use, and only can the tension spring 52 bear force when the breaker is in tripping protection.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the foregoing examples are provided for the purpose of illustration only and are not intended to limit the scope of the invention, and that various modifications or additions and substitutions to the described specific embodiments may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the invention as defined in the accompanying claims. It should be understood by those skilled in the art that any modification, equivalent substitution, improvement, etc. made to the above embodiments according to the technical substance of the present invention should be included in the scope of protection of the present invention.