Modularized operating mechanism of solid insulation cabinet
Technical Field
The invention relates to the technical field of power transmission and distribution switch cabinets, in particular to a modularized operating mechanism of a solid insulation cabinet.
Background
The solid insulation switch cabinet is a medium voltage switch cabinet which is formed by coating a primary loop through solid insulation materials, and is a great innovation in the switch field. Technological progress of epoxy resin material and product technology and popularization of vacuum switch lay a technological foundation for development of solid insulation switch cabinet.
Currently, solid insulated switchgear is used as a substitute for SF 6 The main power transmission and distribution products of (sulfur hexafluoride) switchgear have a large share in the existing market. The operating mechanism of the solid insulation cabinet mainly comprises a breaker operating mechanism, an isolation operating mechanism and a grounding operating mechanism. The operating mechanism of the existing solid insulation cabinet integrates the three parts into an integral mechanism, and no obvious functional area is distinguished between the mechanisms. On one hand, the operating mechanism of the existing solid insulation cabinet is not easy to cause misoperation of operators due to the fact that the functional area is not obvious; on the other hand, the operating mechanism has compact structure and difficult assembly; in addition, the operation mechanism is complicated in field maintenance after being damaged, and a professional maintenance tool is needed.
Therefore, how to provide an operating mechanism of a solid insulation cabinet with simple structure, convenient assembly and maintenance, obvious partition and complete functions becomes a problem to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a modularized operating mechanism of a solid insulation cabinet, which improves the interchangeability of the mechanism and makes the assembly and the maintenance more convenient by partitioning the operating mechanism.
In order to achieve the above object, the present invention provides the following solutions:
the invention discloses a modularized operating mechanism of a solid insulation cabinet, which comprises a shell, and a circuit breaker module and an isolated grounding module which are arranged in the shell, wherein the circuit breaker module comprises an operating energy storage mechanism positioned at the front side and a transmission mechanism positioned at the rear side, the isolated grounding module comprises an operating mechanism positioned at the front side and an isolated grounding linkage mechanism positioned at the rear side, and the front side of the shell is provided with a preformed hole.
Preferably, the operation energy storage mechanism comprises a module front plate and a module rear plate, the module front plate and the module rear plate are fixedly connected through a module fixing rod, an energy storage motor is fixed on the module rear plate, a manual energy storage shaft, a motor energy storage shaft, an energy storage driven shaft, a crank shaft, a brake opening and closing shaft, which are respectively connected with the module front plate and the module rear plate in a rotating way, are arranged between the module front plate and the module rear plate, the energy storage motor is in transmission connection with the motor energy storage shaft, a motor connecting gear is arranged on the motor energy storage shaft, the motor connecting gear is respectively meshed with a driving gear and a driven gear, the driving gear and a ratchet wheel are coaxially arranged on the manual energy storage shaft, the ratchet wheel is adjacently provided with a ratchet wheel pawl for limiting the rotation direction of the ratchet wheel, the energy storage driven shaft is sequentially provided with a cam, a driven gear, an energy storage cam and an energy storage spring crank arm from front to back, the energy storage spring crank arm is arranged at the rear side of the module rear plate, a roller crank arm is arranged on the crank arm shaft, the upper part of the roller crank arm is connected with a small roller, the lower part of the roller crank arm is connected with a large roller, the middle right side of the roller crank arm is provided with a pull rod, the small roller interacts with a pawl on the brake separating pawl shaft, the large roller interacts with the cam, the energy storage cam interacts with a baffle on the brake closing energy storage shaft, the horizontal left sides of the brake separating rotating shaft and the brake closing rotating shaft are respectively provided with a brake separating button guide post and a brake closing button guide post, the brake separating button guide post and the brake closing button guide post are respectively provided with a brake separating button and a brake closing button in a sliding manner, the opening button and the closing button are respectively used for limiting the rotation of the opening rotating shaft and the closing rotating shaft.
Preferably, the transmission mechanism comprises a transmission fixed front plate and a transmission fixed rear plate, the transmission fixed front plate and the transmission fixed rear plate are fixedly connected through an intermediate fixed shaft, a connecting rod crank shaft and a separating brake crank arm which are respectively connected with the transmission fixed front plate and the transmission fixed rear plate in a rotating mode are arranged between the transmission fixed front plate and the transmission fixed rear plate, the crank-shaped top end of the connecting rod crank shaft is connected with a three-phase connecting plate in a rotating mode through a hole pin, the three-phase connecting plate is horizontally arranged, the three-phase connecting plate is connected with a pin connecting plate in a rotating mode, the pin connecting plate is connected with an insulating pull rod pin through a sliding groove pin, the lower portion of the insulating pull rod pin is connected with an insulating pull rod in a threaded mode, the upper portion of the separating brake crank arm is connected with a separating brake spring pull rod pin, two ends of the separating brake spring are respectively connected with the separating brake spring pull rod and the separating brake spring stop shaft in a fixed mode, the middle portion of the separating brake crank arm is provided with a buffer used for contacting with the upper portion of the buffer, and the buffer crank shaft is connected with the lower portion of the transmission fixed front plate through the connecting plate and the middle plate.
Preferably, the operating mechanism comprises a first fixed plate, a second fixed plate, a third fixed plate and a fourth fixed plate, the first fixed plate, the second fixed plate, the third fixed plate and the fourth fixed plate are fixedly connected through a fixed plate connecting rod, the grounding indication block is coaxially arranged at the front end of the grounding operation shaft and positioned at the front side of the first fixed plate, the isolation indication block is coaxially arranged at the front end of the isolation operation shaft and positioned at the front side of the first fixed plate, the rear end of the grounding operation shaft and the rear end of the isolation operation shaft are fixedly connected with one end of a first inter-shaft connecting piece respectively, the other end of the first inter-shaft connecting piece is fixedly connected with one end of a second inter-shaft connecting piece, a grounding auxiliary spring, a spring sleeve abutted with one end of the grounding auxiliary spring and a spring fixing shaft abutted with the other end of the grounding auxiliary spring are arranged between the first fixed plate and the third fixed plate, and an isolation auxiliary spring, an isolation auxiliary spring and an auxiliary spring abutted with one end of the fixing shaft are arranged between the second fixed plate and the third fixed plate.
Preferably, the isolation grounding linkage comprises a connecting plate and two baffles fixed on the front side and the rear side of the connecting plate, a grounding transmission rod and an isolation transmission rod are rotationally connected on the connecting plate, the grounding transmission rod and a first connecting plate, a first transmission connecting arm and a first connecting block on the front side of the connecting plate form the grounding linkage, the isolation transmission rod and a second connecting plate, a second transmission connecting arm and a second connecting block on the rear side of the connecting plate form the isolation linkage, a turning arm on the grounding transmission rod and the first connecting plate are rotationally connected, the first connecting plate and the first transmission connecting arm are rotationally connected, the turning arm on the isolation transmission rod and the second connecting plate are rotationally connected, the second connecting plate and the second transmission connecting arm are rotationally connected, the second transmission connecting arm and the second connecting block are rotationally connected, the first connecting block and the second connecting block are provided with a solid connecting rod, the first connecting block is fixedly connected with the end of the first connecting block, the second connecting block is fixedly connected with the solid connecting rod, and the solid connecting rod is connected with the end of the solid connecting column of the isolation transmission linkage.
Preferably, the shell comprises a front shell, a connecting shell, a shell connecting plate and a rear shell, wherein the front shell, the connecting shell and the rear shell are sequentially connected, the shell connecting plate is arranged in the shell, and the preformed hole is formed in the front shell.
Compared with the prior art, the invention has the following technical effects:
the modules of the invention perform respective action operations through the reserved holes of the front shell, and the current state of each mechanism is displayed through the reserved holes, so that the operation process is safer and more convenient;
the modularized operating mechanism of the solid insulation cabinet is simple in structure, obvious in partition, good in interchangeability and convenient to assemble and maintain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an isometric view of a modular operating mechanism for a solid insulation cabinet;
FIG. 2 is a top view of a modular operating mechanism of the solid insulation cabinet;
FIG. 3 is an isometric view of an operating energy storage mechanism;
FIG. 4 is a right side view of the operating energy storage mechanism;
FIG. 5 is a schematic illustration of the front plate of the operating energy storage mechanism with the module removed;
FIG. 6 is a rear view of the operating energy storage mechanism with portions of non-primary components removed;
FIG. 7 is a right side view of the transmission;
FIG. 8 is a cross-sectional view of the transmission;
FIG. 9 is an isometric view of an operating mechanism;
FIG. 10 is a schematic diagram of an isolated ground linkage;
FIG. 11 is a schematic view of the front portion of the isolated ground linkage;
FIG. 12 is a schematic view of the rear portion of the isolated ground linkage;
reference numerals illustrate: the power source is characterized by comprising a front shell 1, a connecting shell 2, a connecting plate 3, a rear shell 4, an operating energy storage mechanism 51, a module front plate 510, a module rear plate 511, an energy storage spring 512, an energy storage spring crank arm 513, an energy storage motor 514, a module fixing rod 515, a manual energy storage shaft 516, a motor energy storage shaft 517, an energy storage driven shaft 518, a ratchet 519, a ratchet pawl 520, a driving gear 521, a motor connecting gear 522, a driven gear 523, a cam 524, a roller crank arm 525, a crank shaft 526, an energy storage cam 527, a brake separating pawl shaft 528, a brake separating rotary shaft 529, a brake closing rotary shaft 530, an interlocking small crank arm 531, a brake closing energy storage shaft 532, a transmission mechanism 61, a transmission fixing front plate 610, a transmission fixing rear plate 611, a connecting rod crank arm 612, a connecting rod crank shaft 613, a brake separating spring 614, a brake separating spring 615, a brake separating spring blocking shaft 616 is a brake release spring lever, 617 is a brake release crank arm, 618 is a three-phase link, 619 is a pin link, 620 is a buffer, 621 is a middle fixed shaft, 622 is an insulating pull rod pin, 623 is a slide slot pin, 624 is a middle connecting shaft, 71 is an operating mechanism, 710 is a first fixed plate, 711 is a second fixed plate, 712 is a third fixed plate, 713 is a fourth fixed plate, 714 is a fixed plate connecting rod, 715 is a grounding shaft, 716 is a grounding indicating block, 717 is a grounding auxiliary spring, 718 is an insulating auxiliary spring, 719 is an insulating operating shaft, 720 is an insulating indicating block, 721 is an interlocking piece, 722 is a first inter-shaft connecting piece, 723 is a second inter-shaft connecting piece, 724 is a spring fixed shaft, 725 is a spring sleeve, 81 is an insulating grounding linkage, 810 is a grounding transmission rod, 811 is an insulating transmission rod, 812 is a connecting plate, 813 is a connecting block, 814 is a connecting plate, 815 is a transmission connecting arm, 816 are baffles.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a modularized operating mechanism of a solid insulation cabinet, which has the advantages of simple structure, convenient assembly and maintenance, obvious partition and complete functions.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1-12, the present embodiment provides a modular operating mechanism for a solid insulation cabinet, which includes a housing, and a circuit breaker module and an isolated grounding module disposed in the housing. As shown in fig. 1-2, the circuit breaker module includes an operating energy storage mechanism 51 on the front side and a transmission mechanism 61 on the rear side, and the isolated ground module includes an operating mechanism 71 on the front side and an isolated ground linkage 81 on the rear side. The front side of the shell is provided with a preformed hole through which the action operation of each module can be carried out, and the current state of each module is displayed through the preformed hole.
Further, the casing includes preceding shell 1, connection casing 2, casing connecting plate 3 and back casing 4, and preceding shell 1, connection casing 2 and back casing 4 link to each other in proper order, and casing connecting plate 3 sets up in the casing, and the preformed hole sets up on preceding shell 1.
As shown in fig. 3-6, the operating energy storage mechanism 51 includes a front module plate 510 and a rear module plate 511 that are vertically arranged in parallel, and the front module plate 510 and the rear module plate 511 are fixedly connected by a module fixing rod 515. An energy storage motor 514 is fixed on the module rear plate 511, and a manual energy storage shaft 516, a motor energy storage shaft 517, an energy storage driven shaft 518, a crank shaft 526, a brake separating sub-shaft 528, a brake separating rotating shaft 529 and a brake closing rotating shaft 530 which are respectively connected with the module front plate 510 and the module rear plate 511 in a rotating mode are horizontally arranged between the module front plate 510 and the module rear plate 511. The front ends of the manual energy storage shaft 516, the energy storage driven shaft 518, the opening rotating shaft 529 and the closing rotating shaft 530 penetrate through the module front plate 510, the front ends of the crank shafts 526 penetrate through the module front plate 510 and are provided with interlocking small crank arms 531, and opening and closing button guide posts are welded on the module front plate 510 on the horizontal left sides of the opening rotating shaft 529 and the closing rotating shaft 530. The rear end of the module fixing rod 515 passes through the module rear plate 511 and is fixed on the shell connecting plate 3 between the operating energy storage mechanism 51 and the transmission mechanism 61; the energy storage spring crank arm 513 is disposed at the rear end of the energy storage driven shaft 518, the lower end of the energy storage spring 512 is connected to the end of the energy storage spring crank arm 513 through a spring pull pin, and the upper end of the energy storage spring 512 is connected to the end of a rotating shaft passing through the module front plate 510 and the module rear plate 511 through a pull rod.
The energy storage motor 514 is in transmission connection with a motor energy storage shaft 517, a motor connecting gear 522 is arranged on the motor energy storage shaft 517, and the motor connecting gear 522 is respectively meshed with a driving gear 521 and a driven gear 523. The driving gear 521 is coaxially disposed on the manual energy storage shaft 516 with the ratchet 519, and a ratchet pawl 520 for limiting the rotation direction of the ratchet 519 is disposed adjacent to the ratchet 519. The ratchet wheel pawl 520 is mounted on a welding post on the rear side of the module front plate 510 and is capable of cooperating with the ratchet wheel 519 to effect unidirectional clockwise rotation of the manual energy storage shaft 516. The energy storage driven shaft 518 is sequentially provided with a cam 524, a driven gear 523, an energy storage cam 527 and an energy storage spring crank arm 513 from front to back, the energy storage spring 512 is arranged at the tail end of the energy storage spring crank arm 513 at the rear side of the module rear plate 511, a roller crank arm 525 is arranged on the crank shaft 526, the upper part of the roller crank arm 525 is connected with a small roller, the lower part of the roller crank arm 525 is connected with a large roller, and the middle part of the roller crank arm is connected with a pull rod in a rotating way close to the right side. The small roller interacts with the detent on the opening detent shaft 528, the large roller interacts with the cam 524, and the energy storage cam 527 interacts with the stop on the closing energy storage shaft 532. The opening latch shaft 528 is provided with a protruding block structure for mounting the latch. A shutter is integrally provided on the closing energy storage shaft 532, and is a double-ended shutter having an upper protruding end and a lower protruding end.
In order to facilitate the resetting of the structures, in this embodiment, reset torsion springs are disposed on the opening latch shaft 528, the opening rotary shaft 529, and the closing rotary shaft 530, and a reset torsion spring is also disposed between the latch on the opening latch shaft 528 and the shaft thereof, a reset expansion spring is disposed on the closing energy storage shaft 532, and compression springs for resetting the opening button and the closing button are mounted at the rear parts thereof. The opening button and the closing button are common structures in the field, and are not described herein.
As shown in fig. 7 to 8, the transmission mechanism 61 includes a transmission fixing front plate 610 and a transmission fixing rear plate 611 which are vertically arranged in parallel, and the transmission fixing front plate 610 and the transmission fixing rear plate 611 are fixedly connected by a middle fixing shaft 621. The lower edges of the transmission fixing front plate 610 and the transmission fixing rear plate 611 are provided with bending parts for abutting against the inner bottom surface of the housing and being fixed to the inner bottom surface of the housing. A connecting rod crank shaft 613 and a brake separating crank arm 617 which are respectively and rotatably connected with the transmission fixing front plate 610 and the transmission fixing rear plate 611 are horizontally arranged between the transmission fixing front plate 610 and the transmission fixing rear plate 611. The front end of the opening crank arm 617 passes through the transmission fixing front plate 610 and is connected with the crank arm shaft 526 through the intermediate connecting shaft 624, and the front end of the connecting rod crank arm shaft 613 passes through the transmission fixing front plate 610 and is provided with the connecting rod crank arm 612. The portion of the connecting rod lever shaft 613 between the transmission fixing front plate 610 and the transmission fixing rear plate 611 is provided with an integral lever which is rotatably connected with the three-phase connecting plate 618 through a hole pin. The three connecting plates 618 are horizontally arranged, three pin connecting plates 619 are rotatably connected to the three connecting plates 618, the pin connecting plates 619 are rotatably connected with the insulating pull rod pin 622 through a sliding groove pin 623 arranged in the front-back direction, the insulating pull rod is connected to the lower portion of the insulating pull rod pin 622 in a threaded mode, and the sliding groove pin 623 is arranged in kidney-shaped holes in the vertical direction on the transmission fixing front plate 610 and the transmission fixing rear plate 611 through coaxially-mounted rollers. The upper part of the opening crank arm 617 is connected with an opening spring pull rod 616 through which the opening spring pull rod 616 passes, and the opening spring pull rod 615 is horizontally arranged on an inner hole on the transmission fixed rear plate 611 along the front-back direction, and two ends of the opening spring 614 are respectively fixedly connected with the opening spring pull rod 616 and the opening spring pull rod 615. The middle part of the opening crank arm 617 is provided with a roller for contacting with the upper part of the buffer 620, the buffer 620 is fixed between the transmission fixing front plate 610 and the transmission fixing rear plate 611, and the buffer 620 can buffer the middle roller of the opening crank arm 617 when the opening crank arm 617 rotates. The lower part of the opening crank arm 617 is connected with a three-phase connecting plate 618 through a pin, and the three-phase connecting plate 618 swings transversely in the left-right direction through the equidirectional rotation of the opening crank arm 617 and the connecting rod crank arm shaft 613. The transmission fixed rear plate 611 is provided with a horizontal waist hole, and the three-phase connecting plate 618 transversely slides in the horizontal waist hole through a pin shaft so as to limit the angle and the travel of the three-phase connecting plate 618.
As shown in fig. 9, the operating mechanism 71 includes a first fixing plate 710, a second fixing plate 711, a third fixing plate 712, and a fourth fixing plate 713 arranged vertically in parallel, and the first fixing plate 710, the second fixing plate 711, the third fixing plate 712, and the fourth fixing plate 713 are fixedly connected by a fixing plate connecting rod 714. The rear end of the fixed plate connecting rod 714 is provided with a threaded hole, the front end of the fixed plate connecting rod 714 is provided with a screw rod, and two adjacent fixed plate connecting rods 714 are in threaded connection. The front end of the foremost fixed plate connecting rod 714 is fixedly connected with the first fixed plate 710, and the rear end of the rearmost fixed plate connecting rod 714 is fixedly connected with the housing connecting plate 3 between the operating mechanism 71 and the isolating and grounding linkage 81. The ground indicating block 716 is coaxially installed at the front end of the ground operating shaft 715 and located at the front side of the first fixing plate 710, and the isolating indicating block 720 is coaxially installed at the front end of the isolating operating shaft 719 and located at the front side of the first fixing plate 710. The rear end of the ground operating shaft 715 and the rear end of the isolation operating shaft 719 are each fixedly connected to one end of a first inter-shaft connecting member 722, and the other end of the first inter-shaft connecting member 722 is fixedly connected to one end of a second inter-shaft connecting member 723. The grounding auxiliary spring 717 is sleeved on the spring sleeve 725 between the first fixing plate 710 and the second fixing plate 711, wherein one end of the spring sleeve 725 is connected with the extending crank arm on the grounding operation shaft 715 through a pin, and the other end is blocked at the spring fixing shaft 724; the isolation auxiliary spring 718 is sleeved on the spring sleeve 725 between the second fixing plate 711 and the third fixing plate 712, wherein one end of the spring sleeve 725 is connected with the extending crank arm on the isolation operation shaft 719 through a pin, and the other end of the spring sleeve 725 is blocked at the spring fixing shaft 724; the grounding auxiliary spring 717 and the isolation auxiliary spring 718 are integrally disposed in a diagonal-type structure. A welding post is provided on the front side of the first fixing plate 710 between the ground operating shaft 715 and the isolation operating shaft 719, and an interlock 721 is provided at the welding post.
In order to realize the mutual transmission of torsion between the isolated grounding operation mechanism 81 and the rear end linkage mechanism, one end of a first inter-shaft connecting piece 722 is nested and connected with the tail end of the grounding operation shaft 715 or the isolated operation shaft 719, and the other end is nested and connected with the front end of a second inter-shaft connecting piece 723; wherein the second inter-axle connection 723 is connected at its distal end to the fourth fixing plate 713 by a drive rod nested with the rear isolating and grounding linkage 81.
As shown in fig. 10-12, the isolated ground linkage 81 includes a vertically disposed connection plate 812 and two baffles 816 secured to the front and rear sides of the connection plate 812, respectively. The connecting plate 812 is horizontally and rotatably connected with the grounding transmission rod 810, the crank arm on the grounding transmission rod 810 is rotatably connected with a connecting plate 814, the connecting plate 814 is rotatably connected with a transmission connection arm 815, the end part of the transmission connection arm 815 is slidably connected with a connection block 813, and the connection block 813 is provided with a chute for sliding the end part of the transmission connection arm 815. The connecting plate 812 is also rotatably connected with an isolation transmission rod 811, a crank arm on the isolation transmission rod 811 is rotatably connected with another connecting plate 814, the connecting plate 814 is rotatably connected with another transmission connecting arm 815, the end part of the transmission connecting arm 815 is slidably connected with another connecting block 813, and the connecting block 813 is provided with a chute for sliding the end part of the transmission connecting arm 815. The front ends of the isolation transmission rod 811 and the ground transmission rod 810 are fixedly connected to the rear end of a second inter-shaft connecting member 723, respectively. The connecting plate 814, the transmission connecting arm 815 and the connecting block 813 respectively form a grounding linkage mechanism and an isolation linkage mechanism with the grounding transmission rod 810 and the isolation transmission rod 811 through a four-bar mechanism mode; the lower part of the connecting block 813 of the grounding linkage mechanism part is connected with a solid insulation cabinet grounding post through bolts, and the lower part of the connecting block 813 of the isolation linkage mechanism part is connected with a solid insulation cabinet isolation post through bolts.
The working process of the modularized operating mechanism of the solid insulation cabinet provided by the embodiment is as follows: the manual energy storage shaft 516 is rotated clockwise or the motor energy storage shaft 517 is rotated anticlockwise by the operation handle corresponding to the operation Kong Renli from the front shell 1, so that the energy storage driven shaft 518 is rotated clockwise to stretch the energy storage spring 512, the upper end of the baffle plate of the closing energy storage shaft 532 is clamped by the closing rotating shaft 530 in the process, the lower end of the baffle plate presses the energy storage cam 527, and the circuit breaker mechanism is in an energy storage state. Then, the closing rotating shaft 530 is rotated to enable the closing energy storage shaft 532 to be tripped by pressing the closing button to move inwards, so that the tensile energy storage spring 512 is released to enable the cam 524 on the energy storage driven shaft 518 to act on the roller crank arm 525, the crank arm shaft 526 is rotated anticlockwise to drive the opening crank arm 617 on the rear transmission mechanism 61 to rotate, and the insulating pull rod pin 622 is moved downwards to conduct breaker closing through the three connecting plates 618 and the pin connecting plates 619, so that the breaker is in a closing state. The counterclockwise rotation of the crank shaft 526 during closing causes the small roller at the upper part of the roller crank arm 525 to act on the opening pawl shaft 528 to cause the opening pawl shaft 528 to be buckled at the opening rotary shaft 529, and the small roller at the upper part of the roller crank arm 525 is propped against the lower end of the opening pawl shaft 528. When the circuit breaker is in a closing state, the opening spring 614 is compressed, the opening rotating shaft 529 is rotated by pressing the opening button to enable the opening rotating shaft 528 to be separated, the crank shaft 526 is also separated to enable the opening crank arm 617 to be rotated clockwise, and then the insulating pull rod pin 622 is enabled to move upwards to open the circuit breaker through the three connecting plates 618 and the pin connecting plate 619, so that the circuit breaker is in the opening state.
The isolated grounding module rotates the grounding operation shaft 715 and the isolated operation shaft 719 clockwise by the corresponding operation Kong Renli of the front case 1, respectively, so that the isolated grounding linkage 81 partially connecting block 813 moves downward to perform the closing operation of the grounding portion and the isolated portion. Rotating the ground operating shaft 715 and the isolating operating shaft 719 counterclockwise, respectively, causes the isolating ground linkage 81 portion connecting block 813 to move upward to perform the opening operation of the ground portion and the isolating portion.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.