CN214280502U - Switch cabinet - Google Patents

Abstract

The utility model discloses a switch cabinet, which comprises a cabinet body, a bus chamber and a cable chamber arranged in the cabinet body, a load switch arranged in the bus chamber, a fuse arranged in the cable chamber, an instrument box and an operation box arranged on the cabinet body, an operation mechanism arranged in the operation box and connected with the load switch for controlling the isolation operation and the grounding operation of the load switch, and a tripping component connected with the fuse for controlling the synchronous tripping of the fuse to provide power, wherein the middle frame of the utility model adopts a column splint structure form, the rigidity of the whole structure is good, the assembly is convenient, the size precision is easy to be ensured, all key transmission devices are covered in the middle frame for supporting and positioning at two ends, when a fault signal is transmitted to an electric tripping coil by a secondary control loop, the electric tripping coil pushes a tripping push plate by a tripping slide plate, thereby realizing the opening operation.

Description

Switch cabinet

Technical Field

The utility model belongs to the electrical equipment field relates to a cubical switchboard.

Background

The switch cabinet is the power equipment that generates electricity, transmits electricity, distribution and electric energy conversion in-process at electric power system, open and shut, control and protection, the inner structure is various and complicated, therefore need the bulky of switch cabinet, and the switch cabinet is of a great variety, if can divide into movable switch cabinet and fixed switch cabinet according to the circuit breaker mounting means, according to the difference of cabinet body structure, can divide into open-type switch cabinet, metal-enclosed switch cabinet and metal-enclosed armor formula switch cabinet etc. and then along with the wider of switch cabinet application scope, the whole manufacturing cost is higher, operating stability is low simultaneously, this kind of problem has been solved effectively to this equipment.

Disclosure of Invention

The utility model discloses an overcome prior art not enough, provide a cubical switchboard.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of switch cabinet, its characterized in that: including the cabinet body, the internal generating line room, the cable chamber that are equipped with of cabinet, load switch are located the generating line room, and the fuse is located the cable chamber, is equipped with instrument box and control box on the cabinet body, is equipped with operating device in the control box, and operating device is connected with load switch, control load switch's isolation operation and ground connection operation, operating device includes the frame, the frame includes upper cover plate, lower apron and frame mounting panel to through location support post fixed connection, operating device is connected with the fuse through tripping assembly, provides power for tripping assembly control fuse is tripped in step.

Further, the method comprises the following steps of; the cabinet body top surface and side have set firmly first installed part and second installed part respectively, and first installed part and second installed part set up to the two sets of symmetry, and first installed part carries out vertical installation to the cabinet body, and the second installed part carries out horizontal installation to the cabinet body, and load switch's lower outlet base is connected with the fuse, and the cable chamber side is provided with the cable cabinet door with cabinet body coupling, sets firmly the cabinet door handle that is used for the push-and-pull on the cable cabinet door, is used for the observation of observation mouthful and is used for the data plate of sign.

Further, the method comprises the following steps of; the instrument box is located above the operation box.

Further, the method comprises the following steps of; the operating mechanism comprises a rack, a closing and opening grounding three-station cam transmission device, a spring energy storage device, a closing and opening button transmission device, a tripping power device and a grounding energy storage device, wherein the grounding energy storage device, the spring energy storage device and the tripping power device store energy, the closing and opening button transmission device performs closing and opening operation, and the tripping transmission device controls emergency opening.

Further, the method comprises the following steps of; the upper cover plate, the lower cover plate and the rack mounting plate are arranged in parallel, the rack is provided with an earthing switch operating device and a main switch operating device, the spring energy storage device is positioned between the earthing switch operating device and the main switch operating device and is respectively connected with the earthing switch operating device and the main switch operating device, the earthing switch operating device comprises an earthing shaft, the main switch operating device comprises a main switch shaft, an earthing hole and a main switch hole are fixedly arranged on the upper cover plate, one end of the earthing shaft penetrates through the earthing hole and extends to the outer side of the upper cover plate, the earthing shaft is manually or mechanically rotated to drive the spring energy storage device to store energy, and when the spring energy storage device rotates to the maximum energy storage position, the energy storage is released to enable the earthing switch operating device to continue to rotate; the main switch shaft is manually or mechanically rotated to drive the spring energy storage device to store energy, and when the spring energy storage device rotates to the maximum energy storage position, the stored energy is released to enable the main switch operating device to continue rotating.

Further, the method comprises the following steps of; the spring energy storage device is positioned between an upper cover plate and a lower cover plate of the frame, the spring energy storage device comprises a pressure spring, a first pressure spring head and a second pressure spring head, the first pressure spring head and the second pressure spring head are connected through a telescopic rod, the pressure spring is sleeved on a second connecting rod, a first spring crank arm is fixedly arranged on the outer surface of a grounding shaft of the grounding switch operating device, the first pressure spring head is rotatably connected with the first spring crank arm, a second spring crank arm is fixedly arranged on the outer surface of a main switch shaft of the main switch operating device, the second pressure spring head is rotatably connected with the second spring crank arm, the first pressure spring head is driven to compress the pressure spring when the grounding switch operating device rotates, so that the pressure spring stores energy, the spring energy storage device also comprises a spring energy storage maintaining device, the spring energy storage maintaining device comprises an energy storage maintaining shaft which is rotatably connected with the upper cover plate and the lower cover plate and an energy storage pawl which is fixedly arranged on the outer surface of the energy storage maintaining shaft, the energy storage pawl comprises a first energy storage buckle plate and a second energy storage buckle plate, a closing roller connecting lever is fixedly arranged on the main switch shaft, a first roller is rotatably arranged on the closing roller connecting lever, when the main switch operating device rotates, the second pressure spring head compresses the pressure spring in the opposite direction to store energy, and the closing roller connecting lever rotates to enable the first roller to abut against the first energy storage buckle plate to keep the energy storage state of the pressure spring.

Further, the method comprises the following steps of; the tripping power device comprises a tripping fulcrum shaft latch, the tripping fulcrum shaft latch is positioned between an upper cover plate and a lower cover plate of the rack and is rotatably connected with the upper cover plate and the lower cover plate, a latch is arranged on the tripping fulcrum shaft latch, a latch torsion spring is sleeved outside the tripping fulcrum shaft latch and is used for resetting the latch, a second roller is rotatably arranged on the latch, a tripping upper crank is rotatably arranged between the upper cover plate and the lower cover plate, the upper end surface of the tripping upper crank is abutted against the side surface of the second roller, so that the tripping upper crank is driven to rotate when rotating, a tripping energy storage spring is arranged between one end of the tripping upper crank and the lower cover plate, the other end of the tripping upper crank is rotatably connected with a first connecting rod, a crank is fixedly arranged on the main switch shaft and is rotatably connected with the first connecting rod, the first connecting rod is driven to move in a set range when the main switch shaft is operated to switch on and rotate, the first connecting rod drives the tripping upper crank to rotate and simultaneously stretch the tripping energy storage spring, the connecting lever is fixedly provided with an arc-shaped groove, the arc-shaped groove corresponds to the pin shaft on the second spring connecting lever, and the radian and the arc length of the arc-shaped groove are matched with the pin shaft along with the rotating range of the second spring connecting lever.

Further, the method comprises the following steps of; the tripping power device also comprises a tripping energy storage retaining device, the tripping energy storage retaining device comprises a tripping shaft, the tripping shaft is positioned between the upper cover plate and the lower cover plate of the frame and is rotationally connected with the upper cover plate and the lower cover plate, the tripping shaft is positioned at one side of the latch, a semicircular notch is fixedly arranged at the position of the tripping shaft corresponding to the latch, the semicircular notch of the tripping shaft is matched with the tail end of the latch, a reset torsion spring is sleeved on the tripping shaft, one end of the reset torsion spring is hung on the tripping shaft, the other end of the reset torsion spring is connected with the lower cover plate, the upper tripping crank and the latch are driven by the first connecting rod to rotate, the tail end of the latch is positioned at the semicircular notch of the tripping shaft, the tail end of the latch is kept in contact with the tangent plane of the semicircular notch, the latch is interfered with the upper crank through the matching of the semicircular notch and the tail end, the tripping shaft rotates to separate the tail end of the latch from the semicircular notch to interfere, the tripping shaft resets under the action of the reset torsion spring, the circular arc at the back of the semicircular notch of the tripping shaft limits the pawl in the stretching state of the tripping energy storage spring.

Further, the method comprises the following steps of; the switching-on/off button transmission device comprises a rotating shaft, a manual switching-off device and a manual switching-on device, wherein the rotating shaft is fixedly connected with a support fixedly arranged on an upper cover plate through a vertical position, the manual switching-off device comprises an upper rotating pressing plate and a switching-off pushing plate, the upper rotating pressing plate is rotatably connected with the rotating shaft, a limiting frame is fixedly arranged on the upper cover plate at a position corresponding to the switching-off pushing plate, the switching-off pushing plate is slidably connected with the limiting frame, a first interlocking tension spring is connected between the switching-off pushing plate and the rotating shaft to facilitate the resetting of the switching-off pushing plate, a half-shaft crank arm is fixedly arranged on the outer surface of a tripping shaft positioned on the outer side of the upper cover plate and abuts against the switching-off pushing plate, a switching-off button hole is fixedly arranged at a position corresponding to an operating cabinet door of an operating cabinet and the upper rotating pressing plate, a switching-off button cover is arranged in the switching-off button hole, a spring is connected between the switching-off button cover and the upper rotating pressing plate to facilitate the resetting of the switching-off button cover, the upper rotating pressing plate is pressed to drive the opening push plate to slide, the opening push plate pushes the half shaft crank arm to drive the tripping shaft to rotate, the pawl is rotated under the restoring force action of the pawl torsion spring, the pawl and the tripping upper crank arm are separated from interference, the tripping power device is enabled to relieve the energy storage state to carry out opening operation, the manual closing device comprises a lower rotating pressing plate and a closing push plate, the lower rotating pressing plate is rotatably connected with the rotating shaft, the closing push plate is slidably connected with the limiting frame, a connecting plate is fixedly arranged on the lower end face of the closing push plate, a second linkage tension spring is connected between the connecting plate and the rotating shaft to facilitate the resetting of the closing push plate, the closing push plate is abutted against the second energy storage buckle plate, a closing button hole is fixedly arranged at the corresponding position of an operating cabinet door of the operating cabinet and the lower rotating pressing plate, a closing button cover is arranged in the closing hole, and a spring is connected between the closing button cover and the lower rotating pressing plate to facilitate the resetting of the closing button cover, the lower rotating pressing plate drives a closing push plate to slide, the closing push plate pushes a second energy storage buckle plate, a closing roller connecting lever and a first energy storage buckle plate are released from a balance state, closing operation is carried out, an electric brake separating device comprises an electric tripping coil and a tripping sliding plate, the tripping sliding plate is connected with a limiting frame in a sliding mode, the tripping sliding plate is linked with the brake separating push plate in a linkage mode, the tripping sliding plate slides to drive the brake separating push plate to slide, a half shaft connecting lever is pushed to rotate, the brake separating push plate slides to drive the tripping sliding plate to slide, the tripping sliding plate is located below the half shaft connecting lever, when a fault signal is transmitted to the electric tripping coil by a secondary control loop, the electric tripping coil pushes the brake separating push plate through the tripping sliding plate, and brake separating operation is carried out.

Further, the method comprises the following steps of; the fuse state indicating device comprises an indicating tripping plate fixedly arranged on a tripping shaft, the indicating tripping plate is rotatably connected with an indicating connecting rod, a signal shaft is rotatably connected with an upper cover plate and a lower cover plate, the signal shaft extends towards the outer side of the upper cover plate, a fuse state indicating plate is rotatably arranged on the outer surface of the signal shaft positioned on the outer side of the upper cover plate, and the fuse state indicating plate is connected with the indicating connecting rod through a connecting plate to indicate the state of the fuse; the tripping transmission device comprises a first tripping plate, a second connecting rod, an upper adjusting plate and a lower adjusting plate, wherein the first tripping plate and the second tripping plate are respectively fixedly arranged on the outer surface of the tripping shaft, the first tripping plate is rotatably connected with the second connecting rod, the second tripping plate is fixedly provided with a first arc groove, the first tripping plate and the second connecting rod move in the first arc groove, the first arc groove limits the moving range of the second connecting rod, the other end of the second connecting rod is rotatably connected with the upper adjusting plate, the upper adjusting plate is hung on a lower cover plate, the lower adjusting plate is hung on the upper adjusting plate, the lower end of the lower adjusting plate is fixedly provided with a tripping pin, the tripping pin is in sliding connection in a sliding groove on the lower cover plate, the tripping assembly comprises a main shaft, a tripping driving plate is arranged on the main shaft, the rotating directions of the tripping driving plate and the main shaft are opposite, an extension plate of the tripping driving plate is positioned below the tripping pin, when a primary circuit is fused, firing pin, driving the main shaft to rotate through the four connecting rods, enabling the tripping driving plate to rotate reversely, enabling the extension plate of the tripping driving plate to jack the tripping pin, moving the second connecting rod, the upper adjusting plate and the lower adjusting plate upwards, enabling the first tripping plate and the second tripping plate to rotate anticlockwise, and tripping the pawl to perform brake opening; the cam transmission device comprises a grounding crank arm part, a cam disc, a closing crank arm part, a first transmission crank arm, a second transmission crank arm and a connecting rod welding piece, wherein the grounding crank arm part and the first transmission crank arm are fixedly arranged on the outer surface of a grounding shaft; the cam disc is connected with the load switch through a switch main shaft; a first pin is fixedly arranged on the first transmission crank arm, a second pin is fixedly arranged on the second transmission crank arm, a first sliding groove and a second sliding groove are respectively fixedly arranged on the lower cover plate, the first sliding groove and the second sliding groove are respectively connected with the first pin and the second pin in a sliding manner, a moving groove and a hook groove are fixedly arranged on the cam disc, the first pin penetrates through the first sliding groove and moves in the moving groove, the second pin penetrates through the second sliding groove and enters or is separated from the hook groove, the closing crank arm part rotates left and right to drive the cam disc to rotate left and right, and the state from the grounding position to the isolation position is switched to the closing position; the cam disc transmits a switch state signal to the signal shaft through the connecting rod weldment and the auxiliary switch crank arm so as to drive the auxiliary switch signal and mechanical signal switching and the measurement of characteristic parameters; the cable cabinet door interlocking device comprises a first interlocking device and a second interlocking device, wherein the first interlocking device enables the load switch to be inoperable after being switched on, and the second interlocking device enables the cable cabinet door to be opened only when the grounding switch is switched on; including the earthing switch device, the earthing switch device is connected with ground connection energy memory, ground connection energy memory includes first ground connection energy storage turning arm, second ground connection energy storage turning arm, lower ground connection connecting rod, the energy storage axle, first energy storage turning arm and second energy storage turning arm, first ground connection energy storage turning arm and second ground connection energy storage turning arm set firmly respectively with the ground connection axle and are connected, the energy storage axle rotates with the frame to be connected, first energy storage turning arm and second energy storage turning arm set firmly respectively with the energy storage axle and are connected, the earthing switch device includes earthing switch link assembly and earthing switch operating element, earthing switch link assembly rotates with second energy storage turning arm to be connected.

To sum up, the utility model discloses an useful part lies in:

1. the middle frame of the utility model adopts a column clamping plate structure, the whole structure has good rigidity, convenient assembly and easy guarantee of size precision, and all key transmission devices are wrapped inside the middle frame to carry out supporting and positioning at both ends;

2. the utility model discloses in adopt dropout energy storage holding device to make dropout power device can keep the energy storage state, the upper crank arm of dropout keeps on dropout keeps sincere son, keeps for the first time, sincere son atress rotation keeps on the trip shaft, carries out the laborsaving lock joint of second time and keeps, can guarantee the sensitive dropout of fuse through this laborsaving retaining structure of second grade;

3. the utility model designs the electric brake-separating device, when the fault signal is transmitted to the electric trip coil by the secondary control loop, the electric trip coil pushes the brake-separating push plate through the trip slide plate, thereby realizing the brake-separating operation;

4. the utility model transmits the signal of the fuse action firing pin to the tripping power device by the tripping transmission device to carry out emergency brake-off; meanwhile, an upper adjusting plate and a lower adjusting plate are designed to be movably adjusted so as to offset the deviation between components, and the problem of position deviation caused by non-uniform assembly reference of a mechanism and a fusing system is avoided;

5. the middle switching-on/switching-off grounding three-station cam transmission device of the utility model concentrates the motion of the switching-on connecting lever part and the grounding connecting lever part on the cam disc, so that the actions at different positions are transmitted to the switch main shaft; the transmission torque curve of the spring release winding main shaft is changed through fitting of the moving groove and the hook groove curve of the cam disc, so that the transmission torque curve meets the output characteristic required by the switch main shaft, and the main shaft is driven to carry out the opening and closing operations of the load switch and the grounding switch;

6. the utility model discloses in design first interlock and second interlock, can make load switch switching-on back inoperable earthing switch through first interlock, just allow to open the cable cabinet door when only earthing switch switches on through the second interlock, improve the security.

Drawings

Fig. 1 is a front view of the device of the present invention.

Fig. 2 is a right side view of the device of the present invention.

Fig. 3 is a schematic structural diagram of the middle operating mechanism, the load switch and the fuse of the present invention.

Fig. 4 is a schematic view of the operating mechanism of the present invention without a frame.

Fig. 5 is a schematic view of the middle frame of the present invention.

Fig. 6 is a schematic view of the connection between the middle spring energy storage device and the tripping power device of the present invention

Fig. 7 is a schematic structural view of the switching button transmission device of the present invention.

Fig. 8 is a schematic structural view of the middle release transmission device of the present invention.

Fig. 9 is an enlarged schematic view of a in fig. 3.

Fig. 10 is a schematic structural view of the three-position cam transmission device for switching on and off grounding of the present invention.

Fig. 11 is a schematic structural diagram of the middle grounding energy storage device of the present invention.

Detailed Description

In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.

All directional indicators (such as upper, lower, left, right, front, rear, horizontal, vertical … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, if the specific posture changes, the directional indicator changes accordingly.

As shown in fig. 1-11, a switch cabinet includes a cabinet body 1, a bus chamber 12 and a cable chamber 13 are provided in the cabinet body 1, a load switch 2 is located in the bus chamber 12, a fuse 6 is located in the cable chamber 13, an instrument box 14 and an operation box 15 are provided on the cabinet body 1, the instrument box 14 is located above the operation box 15, an operation mechanism is provided in the operation box 15, the operation mechanism is connected with the load switch 2 to control the isolation operation and the grounding operation of the load switch 2, and the operation mechanism is connected with the fuse 6 through a tripping assembly 3 to provide power for the tripping assembly 3 to control the fuse 6 to be tripped synchronously.

The top surface and the side surface of the cabinet body 1 are respectively and fixedly provided with a first mounting part 111 and a second mounting part 112, the first mounting part 111 and the second mounting part 112 are arranged into two symmetrical groups, the first mounting part 111 is used for longitudinally mounting the cabinet body 1, the second mounting part 112 is used for transversely mounting the cabinet body 1, so that the stability of the cabinet body 1 after mounting is ensured, in the embodiment, the load switch 2 is a three-station three-phase load switch, three groups of fuses 6 are vertically arranged, the distribution direction of the fuses 6 is consistent with the length direction of the cabinet body 1, the lower wire outlet seat of the load switch 2 is connected with the fuses 6, the side surface of the cable chamber 13 is provided with a cable cabinet door 16 connected with the cabinet body 1, a cabinet door handle 161 for pushing and pulling, an observation port 162 for observation and a nameplate 163 for identification are fixedly arranged on the cable cabinet door 16, and an observation plate made of transparent material is arranged in the observation port 162, for example, glass, acrylic plate, etc., according to the visual angle of fig. 2, the left side of the cabinet body 1 is provided with a pressure relief box, the pressure relief box is provided with pressure relief holes, the pressure relief holes are respectively communicated with the bus bar room 12 and the cable room 13, the communicated channels are mutually independent, and under the normal operation state of the equipment, the communicated parts of the pressure relief holes, the bus bar room 12 and the cable room 13 are provided with pressure relief metal plates (not shown) for sealing.

Instrument box 14 and operation box 15 are located cable chamber 13 top and set firmly in generating line room 12 side, instrument box 14 is located operation box 15 top, instrument box 14 side has set firmly the vent of longitudinal symmetry (not shown in the figure), in this embodiment, the vent sets up to the loop configuration, and the ventilation cooling of being convenient for guarantees that temperature keeps at stable state in instrument box 14, avoids accelerating ageing under high temperature of components and parts, has improved the life of components and parts.

The operating mechanism comprises a frame 49, a closing and opening grounding three-position cam transmission device 40, a spring energy storage device 41, a closing and opening button transmission device 42, a tripping transmission device 43, a tripping power device 44 and a grounding energy storage device 46, wherein the grounding energy storage device 46, the spring energy storage device 41 and the tripping power device 44 store energy, the closing and opening button transmission device 42 performs closing and opening operation, and the tripping transmission device 43 controls emergency opening.

The frame 49 includes upper cover plate 491, lower cover plate 492 and frame mounting panel 493, and upper cover plate 491, lower cover plate 492 and frame mounting panel 493 parallel arrangement, and through location support stand 494 fixed connection, frame 49 adopts stand splint structural style, improves the rigidity of complete machine structure, and convenient assembling, and size precision easily guarantees, inside with all key transmission cladding simultaneously, avoids appearing collision scheduling problem.

The frame 49 is provided with an earthing switch operating device and a main switch operating device, the spring energy storage device 41 is positioned between the earthing switch operating device and the main switch operating device and is respectively connected with the earthing switch operating device and the main switch operating device, the earthing switch operating device comprises an earthing shaft 496, the main switch operating device comprises a main switch shaft 497, an earthing hole 4911 and a main switch hole 4912 are fixedly arranged on an upper cover plate 491, one end of the earthing shaft 496 penetrates through the earthing hole 4911 and extends to the outer side of the upper cover plate 491, the earthing shaft 496 is manually or mechanically rotated, so that the spring energy storage device 41 is driven to store energy, and when the spring energy storage device 41 rotates to the maximum energy storage position, the stored energy is released to enable the earthing switch operating; the main switch shaft 497 is rotated manually or by a motor to drive the spring energy storage device 41 to store energy, and when the spring energy storage device 41 rotates past the maximum energy storage position, the stored energy is released to continue rotating the main switch operating device.

Spring energy storage device 41 is located between upper cover plate 491 and the lower cover plate 492 of frame 49, spring energy storage device 41 includes pressure spring 411, first pressure spring head 4111 and second pressure spring head 4112, connect through telescopic link 4113 between first pressure spring head 4111 and the second pressure spring head 18, pressure spring 411 cover is established on telescopic link 4113, earthing switch operating device's earthing shaft 496 surface sets firmly first spring turning arm 410, first pressure spring head 4111 rotates with first spring turning arm 410 and is connected, main switch operating device's main switch axle 497 surface sets firmly second spring turning arm 412, second pressure spring head 4112 rotates with second spring turning arm 412 and is connected, when earthing switch operating device rotates, thereby drive first pressure spring head 4111 compression pressure spring 411 and carry out the energy storage, for keeping the energy storage state of pressure spring 411, the utility model discloses still include spring energy storage holding device, spring energy storage holding device includes the energy storage that rotates with upper cover plate 491 and lower cover plate 492 and is connected and keeps axle 415 and sets firmly in the energy storage that keeps the axle 415 and set firmly in the axle 415 The sincere son of energy storage 416 of surface, the sincere son of energy storage 416 includes first energy storage buckle 4161 and second energy storage buckle 4162, set firmly closing roller connecting lever 414 on the master switch axle 497, it is provided with first roller 4141 to rotate on the closing roller connecting lever 414, when master switch operating means rotated, thereby second pressure spring head 4112 can the opposite direction compression pressure spring 411 carry out the energy storage, drive closing roller connecting lever 414 simultaneously and rotate, make first roller 4141 and first energy storage buckle 4161 offset, thereby keep the energy storage state of pressure spring 411.

The tripping power device 44 comprises a tripping fulcrum latch 448, the tripping fulcrum latch 448 is positioned between an upper cover plate 491 and a lower cover plate 492 of the rack 49, the tripping fulcrum latch 448 is rotatably connected with the upper cover plate 491 and the lower cover plate 492, a latch 444 is arranged on the tripping fulcrum latch 448, a latch torsion spring 445 is sleeved outside the tripping fulcrum latch 448 and used for resetting the latch 444, a second roller 4441 is rotatably arranged on the latch 444, a tripping upper crank arm 446 is rotatably arranged between the upper cover plate 491 and the lower cover plate 492, the upper end surface of the tripping upper crank arm 446 is abutted against the side surface of the second roller 4441, so that the latch 444 is driven to rotate when the tripping upper crank arm 446 rotates, a tripping energy storage spring 447 is arranged between one end of the tripping upper crank arm 446 and the lower cover plate 492, the other end of the tripping upper crank arm 446 is rotatably connected with a first connecting rod 442, a crank arm 441 is fixedly arranged on a main switch shaft 497, the crank arm 441 is rotatably connected with the first connecting rod 442, when the main switch shaft 497 is manually operated to rotate, the main switch shaft 497 drives the connecting lever 441 to rotate, and then drives the first connecting lever 442 to move within a certain range, the first connecting lever 442 drives the tripping upper connecting lever 446 to rotate and simultaneously stretch the tripping energy storage spring 447 for storing energy, an arc-shaped groove is fixedly arranged on the connecting lever 441 and corresponds to a pin shaft on the second spring connecting lever 412, the radian and the arc length of the arc-shaped groove are matched with the pin shaft along with the rotating range of the second spring connecting lever 412, and when the tripping power device and the second spring connecting lever 412 move, the tripping power device and the second spring connecting lever 412 are independent of each other and cannot interfere with each other.

In order to enable the tripping power device to maintain the energy storage state, the utility model also comprises a tripping energy storage keeping device, the tripping energy storage keeping device comprises a tripping shaft 443, the tripping shaft 443 is positioned between the upper cover plate 491 and the lower cover plate 492 of the frame 49, the tripping shaft 443 is rotatably connected with the upper cover plate 491 and the lower cover plate 492, the tripping shaft 443 is positioned at one side of the latch 444, a semicircular notch (not shown) is fixedly arranged at the position of the tripping shaft 443 corresponding to the latch 444, the semicircular notch of the tripping shaft 443 is matched with the tail end of the latch 444, a reset torsion spring 4431 is sleeved on the tripping shaft 443, one end of the reset torsion spring 4431 is hung on the tripping shaft 443, the other end of the reset torsion spring is connected with the lower cover plate 492, when the tripping upper crank arm 446 and the latch 444 are driven by the first connecting rod 442 to rotate, the tail end of the latch 444 is positioned at the semicircular notch of the tripping shaft, and the tail end of the latch 444 is always kept in contact with the tangent plane of the semicircular notch, therefore, the pawl 444 is prevented from interfering with the upper turning arm 446 in tripping through the matching of the semicircular notch and the tail end, the energy storage of the tripping power device is influenced, after the tripping shaft 33 rotates to enable the tail end of the pawl 444 to be separated from the semicircular notch to interfere, the tripping shaft 33 resets under the action of the reset torsion spring 4431, the circular arc at the back of the semicircular notch of the tripping shaft 33 limits the pawl 444 to be in the stretching state of the tripping energy storage spring 447, and the energy storage keeping is realized.

In this embodiment, the main switch shaft 497 rotates to drive the trip power device to store energy, when the energy storage state of the trip power device is released, the trip energy storage spring 447 releases the stored energy to drive the upper trip crank arm 446 to rotate, and at this time, the main switch shaft 497 is driven to rotate reversely through the first connecting rod 442 and the crank arm 441, so as to realize the brake opening operation.

The switching-on/off button transmission device 42 comprises a rotating shaft 424, a manual switching-off device and a manual switching-on device, wherein the rotating shaft 424 is fixedly connected with a bracket 428 which is positioned at the upper and lower positions and is fixedly connected with an upper cover plate 491, the manual switching-off device comprises an upper rotating pressing plate 421 and a switching-off pushing plate 420, the upper rotating pressing plate 421 is rotatably connected with the rotating shaft 424, a limiting frame 4201 is fixedly arranged at the position of the upper cover plate 491 corresponding to the switching-off pushing plate 420, the switching-off pushing plate 420 is slidably connected with the limiting frame 4201, a first interlocking tension spring (not shown) is connected between the switching-off pushing plate 420 and the rotating shaft 424 for facilitating the resetting of the switching-off pushing plate 420, a half-shaft crank arm 426 is fixedly arranged on the outer surface of a tripping shaft 443 positioned at the outer side of the upper cover plate 491, the half-shaft crank arm 426 abuts against the switching-off pushing plate 420, a switching-off button hole (not shown) is fixedly arranged at the position of an operation 151 of the operation box corresponding to the upper rotating pressing plate 421, and a switching-off button cover 4210 is arranged in the switching-off button hole, when the brake-off operation is required, the brake-off button cover 4210 is pressed to enable the upper rotating pressing plate 421 to rotate around the rotating shaft 424, the upper rotating pressing plate 421 drives the brake-off pushing plate 420 to slide, the brake-off pushing plate 420 pushes the half-shaft crank arm 426 to enable the half-shaft crank arm 426 to rotate anticlockwise so as to drive the tripping shaft 443 to rotate, the latch 444 rotates under the restoring force of the latch torsion spring 445, and the latch 444 and the tripping upper crank 446 are disengaged from interference, so that the tripping power device releases the energy storage state, and the brake-off operation is realized.

The manual closing device comprises a lower rotating pressing plate 423 and a closing push plate 425, the lower rotating pressing plate 423 is rotatably connected with a rotating shaft 424, the closing push plate 425 is slidably connected with a limiting frame 4201, a linkage piece 4282 is fixedly arranged on the lower end face of the closing push plate 425, a second linkage tension spring is connected between the linkage piece 4282 and the rotating shaft 424 to facilitate resetting of the closing push plate 425, the closing push plate 425 abuts against a second energy storage buckle plate 4162, a closing button hole (not shown) is fixedly arranged at a position, corresponding to the operating cabinet door 151 and the lower rotating pressing plate 423, of an operating cabinet 15, a closing button cover 4220 is arranged in the closing button hole, a spring is connected between the closing button cover 4220 and the lower rotating pressing plate 423 to facilitate resetting of the closing button cover 4220, when closing operation is required, the closing button cover 4220 is pressed to enable the lower rotating pressing plate 423 to rotate around the rotating shaft 423, the lower rotating pressing plate 423 drives the closing push plate 425 to slide the closing push plate 425 to push a closing push a second energy storage buckle plate 4162 to enable a closing push plate 41414 to enable a closing roller 4161 to be released from a first energy storage buckle plate 4161 And the spring energy storage device 41 is in a state of abutting, so that the energy storage state is released, and the closing operation is realized.

The electric brake separating device comprises an electric trip coil 427 and a trip sliding plate 422, the trip sliding plate 422 is slidably connected with a limiting frame 4201, the trip sliding plate 422 is linked with a brake separating pushing plate 420, specifically, the trip sliding plate 422 can be driven to slide when sliding, so as to push a half shaft crank 426 to rotate, the trip sliding plate 422 can be driven to slide when sliding, and the trip sliding plate 422 is positioned below the half shaft crank 426, so as to avoid interference during manual and electric brake separating, and ensure the independence of the two brake separating.

In this embodiment, a fuse state indicating device is further provided, the fuse state indicating device includes an indicating tripping plate 455 fixedly disposed on the tripping shaft 443, the indicating tripping plate 455 is rotatably connected with an indicating link 454, the signal shaft 400 is rotatably connected with an upper cover plate 491 and a lower cover plate 492, the signal shaft 400 extends towards the outer side of the upper cover plate 491, a fuse state indicating plate 452 is rotatably disposed on the outer surface of the signal shaft 400 located at the outer side of the upper cover plate 491, and the fuse state indicating plate 452 and the indicating link 454 are connected through the connecting plate 453, so that the state of the fuse is indicated.

In this embodiment, the switching-on/off button transmission device 42 integrates a switching-on/off button transmission system and a trip coil on the outer side of the upper cover plate, and transmits the button action on the operation cabinet door 151 to the half-shaft crank arm 426 and the second energy storage buckle plate 4162 through the transmission structure conversion of the manual switching-off device, the manual switching-on device and the electric switching-off device, thereby performing switching-on/off operation.

The tripping transmission device 43 comprises a first tripping plate 431, a second tripping plate 432, a second connecting rod 433, an upper adjusting plate 434 and a lower adjusting plate 435, wherein the first tripping plate 431 and the second tripping plate 432 are respectively and fixedly arranged on the outer surface of the tripping shaft 443, the first tripping plate 431 is rotatably connected with the second connecting rod 433, the second tripping plate 432 is fixedly provided with a first arc groove 4321, the first tripping plate 431 and the second connecting rod 433 move in the first arc groove 4321, the first arc groove 4321 limits the moving range of the second connecting rod 433, the other end of the second connecting rod 433 is rotatably connected with the upper adjusting plate 434, the upper adjusting plate 434 is hung on the lower cover plate 492, the lower adjusting plate 435 is hung on the upper adjusting plate 435, the lower end of the lower adjusting plate is fixedly provided with a tripping pin 436, the tripping pin 436 is slidably connected in a sliding groove 4921 on the lower cover plate 492, the connection of the tripping transmission device and the tripping assembly 3 is specifically formed in a way that the tripping assembly 3 comprises a main shaft 31, the main shaft 31 is provided with the trip driving plate 32, the rotation direction of the trip driving plate 32 is opposite to that of the main shaft 31, the extension plate of the trip driving plate 32 is positioned below the trip pin 436, when the primary loop fuse is fused, the firing pin is struck out and is transmitted to the main shaft 31 to rotate through the four-bar linkage, so that the trip driving plate 32 rotates reversely, the extension plate of the trip driving plate 32 jacks the trip pin 436, the second connecting rod 433, the upper adjusting plate 434 and the lower adjusting plate 435 move upwards, the first trip plate 431 and the second trip plate 432 rotate anticlockwise, the pawl 444 is tripped, and the purpose of rapid brake opening is achieved.

The tripping transmission device transmits a fuse action firing pin signal to the tripping power device to carry out emergency brake opening; meanwhile, an upper adjusting plate 434 and a lower adjusting plate 435 are designed to be movably adjusted so as to offset the deviation between the components, and the problem of position deviation caused by non-uniform assembly reference of the mechanism and the fusing system is avoided.

The three-station cam transmission device 40 for grounding and opening the closing and opening brake comprises a grounding connecting lever part 406, a cam disc 403, a closing connecting lever part 404, a first transmission connecting lever 407, a second transmission connecting lever 405 and a connecting rod welding piece 402, wherein the grounding connecting lever part 406 and the first transmission connecting lever 407 are fixedly arranged on the outer surface of a grounding shaft 496, the closing connecting lever part 404 and the second transmission connecting lever 405 are arranged on the outer surface of a main switch shaft 497, the cam disc 403 and the connecting rod welding piece 402 are positioned between a lower cover plate 492 and a rack mounting plate 493, a second arc groove is fixedly arranged on the closing connecting lever part 404 and corresponds to a pin shaft on the second spring connecting lever 412, and the radian and the arc length of the second arc groove are matched with the rotation range of the pin shaft along with the second spring connecting lever 412, namely, when the three-station cam transmission device 40 for grounding and opening the closing and opening brake moves, the two spring connecting lever arms are mutually independent and cannot interfere; the cam disk 403 is connected to the load switch 2 via a switch spindle.

A first pin 4071 is fixedly arranged on the first transmission crank arm 407, a second pin 4051 is fixedly arranged on the second transmission crank arm 405, a first sliding chute and a second sliding chute are respectively fixedly arranged on the lower cover plate 492, the first sliding chute and the second sliding chute are respectively connected with the first pin 4071 and the second pin 4051 in a sliding manner, a moving groove 4073 and a hook groove 4072 are fixedly arranged on the cam disc 403, the first pin 4071 penetrates through the first sliding chute and moves in the moving groove 4073, the second pin 4051 penetrates through the second sliding chute and enters or separates from the hook groove 4072, the cam disc 403 is driven to rotate left and right by the left and right rotation of the switching-on crank arm part 404, and the switching-on state from the grounding position to the isolation position to the switching-on position is switched; the cam plate 403 transmits switch status signals to the signal shaft 400 via the link weldment 402 and the auxiliary switch crank arm 409 to drive the auxiliary switch signal and mechanical signal switching and measurement of characteristic parameters.

In this embodiment, the three-position cam transmission device 40 for closing and opening the brake concentrates the motion of the closing crank arm part 404 and the grounding crank arm part 406 on the cam disc 403, so that the motions at different positions are transmitted to the switch main shaft; the curve of the transmission torque of the spring release around the main shaft is changed by fitting the curves of the moving groove 4073 and the hook groove 4072 of the cam disc 403, so that the curve meets the required output characteristic of the switch main shaft, and the main shaft is driven to perform the opening and closing operations of the load switch and the grounding switch.

The utility model discloses still include first interlock 47 and second interlock 48, first interlock 47 and second interlock 48 can adopt conventional technical scheme, can make load switch closing back inoperable earthing switch through first interlock 47, just allow to open cable cabinet door 16 when only earthing switch closes a floodgate through second interlock 48, improve the security.

The utility model discloses still include ground switch device 5, ground switch device 5 is connected with ground connection energy memory 46, ground connection energy memory 46 includes first ground connection energy storage connecting lever 461, second ground connection energy storage connecting lever 462, connecting rod 463 of earthing down, energy storage axle 466, first energy storage connecting lever 464 and second energy storage connecting lever 465, first ground connection energy storage connecting lever 461 and second ground connection energy storage connecting lever 462 set firmly with earthing shaft 496 respectively and are connected, energy storage axle 466 rotates with frame 49 to be connected, first energy storage connecting lever 464 and second energy storage connecting lever 465 set firmly with energy storage axle 466 respectively and are connected, ground switch device 5 includes ground sword link assembly 51 and ground sword operating assembly 52, ground sword link assembly 51 rotates with second energy storage connecting lever 465 to be connected, prevent the maloperation.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Claims (10)

1. A kind of switch cabinet, its characterized in that: including the cabinet body, the internal generating line room, the cable chamber that are equipped with of cabinet, load switch are located the generating line room, and the fuse is located the cable chamber, is equipped with instrument box and control box on the cabinet body, is equipped with operating device in the control box, and operating device is connected with load switch, control load switch's isolation operation and ground connection operation, operating device includes the frame, the frame includes upper cover plate, lower apron and frame mounting panel to through location support post fixed connection, operating device is connected with the fuse through tripping assembly, provides power for tripping assembly control fuse is tripped in step.

2. A switchgear cabinet according to claim 1, characterized in that: the cabinet body top surface and side have set firmly first installed part and second installed part respectively, and first installed part and second installed part set up to the two sets of symmetry, and first installed part carries out vertical installation to the cabinet body, and the second installed part carries out horizontal installation to the cabinet body, and load switch's lower outlet base is connected with the fuse, and the cable chamber side is provided with the cable cabinet door with cabinet body coupling, sets firmly the cabinet door handle that is used for the push-and-pull on the cable cabinet door, is used for the observation of observation mouthful and is used for the data plate of sign.

3. A switchgear cabinet according to claim 1, characterized in that: the instrument box is located above the operation box.

4. A switchgear cabinet according to claim 1, characterized in that: the operating mechanism comprises a rack, a closing and opening grounding three-station cam transmission device, a spring energy storage device, a closing and opening button transmission device, a tripping power device and a grounding energy storage device, wherein the grounding energy storage device, the spring energy storage device and the tripping power device store energy, the closing and opening button transmission device performs closing and opening operation, and the tripping transmission device controls emergency opening.

5. A switchgear cabinet according to claim 4, characterized in that: the upper cover plate, the lower cover plate and the rack mounting plate are arranged in parallel, the rack is provided with an earthing switch operating device and a main switch operating device, the spring energy storage device is positioned between the earthing switch operating device and the main switch operating device and is respectively connected with the earthing switch operating device and the main switch operating device, the earthing switch operating device comprises an earthing shaft, the main switch operating device comprises a main switch shaft, an earthing hole and a main switch hole are fixedly arranged on the upper cover plate, one end of the earthing shaft penetrates through the earthing hole and extends to the outer side of the upper cover plate, the earthing shaft is manually or mechanically rotated to drive the spring energy storage device to store energy, and when the spring energy storage device rotates to the maximum energy storage position, the energy storage is released to enable the earthing switch operating device to continue to rotate; the main switch shaft is manually or mechanically rotated to drive the spring energy storage device to store energy, and when the spring energy storage device rotates to the maximum energy storage position, the stored energy is released to enable the main switch operating device to continue rotating.

6. A switchgear cabinet according to claim 4, characterized in that: the spring energy storage device is positioned between an upper cover plate and a lower cover plate of the frame, the spring energy storage device comprises a pressure spring, a first pressure spring head and a second pressure spring head, the first pressure spring head and the second pressure spring head are connected through a telescopic rod, the pressure spring is sleeved on a second connecting rod, a first spring crank arm is fixedly arranged on the outer surface of a grounding shaft of the grounding switch operating device, the first pressure spring head is rotatably connected with the first spring crank arm, a second spring crank arm is fixedly arranged on the outer surface of a main switch shaft of the main switch operating device, the second pressure spring head is rotatably connected with the second spring crank arm, the first pressure spring head is driven to compress the pressure spring when the grounding switch operating device rotates, so that the pressure spring stores energy, the spring energy storage device also comprises a spring energy storage maintaining device, the spring energy storage maintaining device comprises an energy storage maintaining shaft which is rotatably connected with the upper cover plate and the lower cover plate and an energy storage pawl which is fixedly arranged on the outer surface of the energy storage maintaining shaft, the energy storage pawl comprises a first energy storage buckle plate and a second energy storage buckle plate, a closing roller connecting lever is fixedly arranged on the main switch shaft, a first roller is rotatably arranged on the closing roller connecting lever, when the main switch operating device rotates, the second pressure spring head compresses the pressure spring in the opposite direction to store energy, and the closing roller connecting lever rotates to enable the first roller to abut against the first energy storage buckle plate to keep the energy storage state of the pressure spring.

7. A switchgear cabinet according to claim 4, characterized in that: the tripping power device comprises a tripping fulcrum shaft latch, the tripping fulcrum shaft latch is positioned between an upper cover plate and a lower cover plate of the rack and is rotatably connected with the upper cover plate and the lower cover plate, a latch is arranged on the tripping fulcrum shaft latch, a latch torsion spring is sleeved outside the tripping fulcrum shaft latch and is used for resetting the latch, a second roller is rotatably arranged on the latch, a tripping upper crank is rotatably arranged between the upper cover plate and the lower cover plate, the upper end surface of the tripping upper crank is abutted against the side surface of the second roller, so that the tripping upper crank is driven to rotate when rotating, a tripping energy storage spring is arranged between one end of the tripping upper crank and the lower cover plate, the other end of the tripping upper crank is rotatably connected with a first connecting rod, a crank is fixedly arranged on the main switch shaft and is rotatably connected with the first connecting rod, the first connecting rod is driven to move in a set range when the main switch shaft is operated to switch on and rotate, the first connecting rod drives the tripping upper crank to rotate and simultaneously stretch the tripping energy storage spring, the connecting lever is fixedly provided with an arc-shaped groove, the arc-shaped groove corresponds to the pin shaft on the second spring connecting lever, and the radian and the arc length of the arc-shaped groove are matched with the pin shaft along with the rotating range of the second spring connecting lever.

8. A switchgear cabinet according to claim 4, characterized in that: the tripping power device also comprises a tripping energy storage retaining device, the tripping energy storage retaining device comprises a tripping shaft, the tripping shaft is positioned between the upper cover plate and the lower cover plate of the frame and is rotationally connected with the upper cover plate and the lower cover plate, the tripping shaft is positioned at one side of the latch, a semicircular notch is fixedly arranged at the position of the tripping shaft corresponding to the latch, the semicircular notch of the tripping shaft is matched with the tail end of the latch, a reset torsion spring is sleeved on the tripping shaft, one end of the reset torsion spring is hung on the tripping shaft, the other end of the reset torsion spring is connected with the lower cover plate, the upper tripping crank and the latch are driven by the first connecting rod to rotate, the tail end of the latch is positioned at the semicircular notch of the tripping shaft, the tail end of the latch is kept in contact with the tangent plane of the semicircular notch, the latch is interfered with the upper crank through the matching of the semicircular notch and the tail end, the tripping shaft rotates to separate the tail end of the latch from the semicircular notch to interfere, the tripping shaft resets under the action of the reset torsion spring, the circular arc at the back of the semicircular notch of the tripping shaft limits the pawl in the stretching state of the tripping energy storage spring.

9. A switchgear cabinet according to claim 4, characterized in that: the switching-on/off button transmission device comprises a rotating shaft, a manual switching-off device and a manual switching-on device, wherein the rotating shaft is fixedly connected with a support fixedly arranged on an upper cover plate through a vertical position, the manual switching-off device comprises an upper rotating pressing plate and a switching-off pushing plate, the upper rotating pressing plate is rotatably connected with the rotating shaft, a limiting frame is fixedly arranged on the upper cover plate at a position corresponding to the switching-off pushing plate, the switching-off pushing plate is slidably connected with the limiting frame, a first interlocking tension spring is connected between the switching-off pushing plate and the rotating shaft to facilitate the resetting of the switching-off pushing plate, a half-shaft crank arm is fixedly arranged on the outer surface of a tripping shaft positioned on the outer side of the upper cover plate and abuts against the switching-off pushing plate, a switching-off button hole is fixedly arranged at a position corresponding to an operating cabinet door of an operating cabinet and the upper rotating pressing plate, a switching-off button cover is arranged in the switching-off button hole, a spring is connected between the switching-off button cover and the upper rotating pressing plate to facilitate the resetting of the switching-off button cover, the upper rotating pressing plate is pressed to drive the opening push plate to slide, the opening push plate pushes the half shaft crank arm to drive the tripping shaft to rotate, the pawl is rotated under the restoring force action of the pawl torsion spring, the pawl and the tripping upper crank arm are separated from interference, the tripping power device is enabled to relieve the energy storage state to carry out opening operation, the manual closing device comprises a lower rotating pressing plate and a closing push plate, the lower rotating pressing plate is rotatably connected with the rotating shaft, the closing push plate is slidably connected with the limiting frame, a connecting plate is fixedly arranged on the lower end face of the closing push plate, a second linkage tension spring is connected between the connecting plate and the rotating shaft to facilitate the resetting of the closing push plate, the closing push plate is abutted against the second energy storage buckle plate, a closing button hole is fixedly arranged at the corresponding position of an operating cabinet door of the operating cabinet and the lower rotating pressing plate, a closing button cover is arranged in the closing hole, and a spring is connected between the closing button cover and the lower rotating pressing plate to facilitate the resetting of the closing button cover, the lower rotating pressing plate drives the closing push plate to slide, the closing push plate pushes the second energy storage buckle plate, the closing roller connecting lever and the first energy storage buckle plate are in a state of releasing the balance, closing operation is carried out, the closing and opening button transmission device further comprises an electric opening device, the electric opening device comprises an electric tripping coil and a tripping sliding plate, the tripping sliding plate is in sliding connection with the limiting frame, the tripping sliding plate is linked with the opening push plate, the tripping sliding plate slides to drive the opening push plate to slide, the semi-axis connecting lever is pushed to rotate, the opening push plate slides to drive the tripping sliding plate to slide, the tripping sliding plate is located below the semi-axis connecting lever, when a fault signal is transmitted to the electric tripping coil by a secondary control loop, the electric tripping coil pushes the opening push plate through the tripping sliding plate, and opening operation is carried out.

10. A switchgear cabinet according to claim 4, characterized in that: the fuse state indicating device comprises an indicating tripping plate fixedly arranged on a tripping shaft, the indicating tripping plate is rotatably connected with an indicating connecting rod, a signal shaft is rotatably connected with an upper cover plate and a lower cover plate, the signal shaft extends towards the outer side of the upper cover plate, a fuse state indicating plate is rotatably arranged on the outer surface of the signal shaft positioned on the outer side of the upper cover plate, and the fuse state indicating plate is connected with the indicating connecting rod through a connecting plate to indicate the state of the fuse; the tripping transmission device comprises a first tripping plate, a second connecting rod, an upper adjusting plate and a lower adjusting plate, wherein the first tripping plate and the second tripping plate are respectively fixedly arranged on the outer surface of the tripping shaft, the first tripping plate is rotatably connected with the second connecting rod, the second tripping plate is fixedly provided with a first arc groove, the first tripping plate and the second connecting rod move in the first arc groove, the first arc groove limits the moving range of the second connecting rod, the other end of the second connecting rod is rotatably connected with the upper adjusting plate, the upper adjusting plate is hung on a lower cover plate, the lower adjusting plate is hung on the upper adjusting plate, the lower end of the lower adjusting plate is fixedly provided with a tripping pin, the tripping pin is in sliding connection in a sliding groove on the lower cover plate, the tripping assembly comprises a main shaft, a tripping driving plate is arranged on the main shaft, the rotating directions of the tripping driving plate and the main shaft are opposite, an extension plate of the tripping driving plate is positioned below the tripping pin, firing pin, driving the main shaft to rotate through the four connecting rods, enabling the tripping driving plate to rotate reversely, enabling the extension plate of the tripping driving plate to jack the tripping pin, moving the second connecting rod, the upper adjusting plate and the lower adjusting plate upwards, enabling the first tripping plate and the second tripping plate to rotate anticlockwise, and tripping the pawl to perform brake opening; the cam transmission device comprises a grounding crank arm part, a cam disc, a closing crank arm part, a first transmission crank arm, a second transmission crank arm and a connecting rod welding piece, wherein the grounding crank arm part and the first transmission crank arm are fixedly arranged on the outer surface of a grounding shaft; the cam disc is connected with the load switch through a switch main shaft; a first pin is fixedly arranged on the first transmission crank arm, a second pin is fixedly arranged on the second transmission crank arm, a first sliding groove and a second sliding groove are respectively fixedly arranged on the lower cover plate, the first sliding groove and the second sliding groove are respectively connected with the first pin and the second pin in a sliding manner, a moving groove and a hook groove are fixedly arranged on the cam disc, the first pin penetrates through the first sliding groove and moves in the moving groove, the second pin penetrates through the second sliding groove and enters or is separated from the hook groove, the closing crank arm part rotates left and right to drive the cam disc to rotate left and right, and the state from the grounding position to the isolation position is switched to the closing position; the cam disc transmits a switch state signal to the signal shaft through the connecting rod weldment and the auxiliary switch crank arm so as to drive the auxiliary switch signal and mechanical signal switching and the measurement of characteristic parameters; the cable cabinet door interlocking device comprises a first interlocking device and a second interlocking device, wherein the first interlocking device enables the load switch to be inoperable after being switched on, and the second interlocking device enables the cable cabinet door to be opened only when the grounding switch is switched on; including the earthing switch device, the earthing switch device is connected with ground connection energy memory, ground connection energy memory includes first ground connection energy storage turning arm, second ground connection energy storage turning arm, lower ground connection connecting rod, the energy storage axle, first energy storage turning arm and second energy storage turning arm, first ground connection energy storage turning arm and second ground connection energy storage turning arm set firmly respectively with the ground connection axle and are connected, the energy storage axle rotates with the frame to be connected, first energy storage turning arm and second energy storage turning arm set firmly respectively with the energy storage axle and are connected, the earthing switch device includes earthing switch link assembly and earthing switch operating element, earthing switch link assembly rotates with second energy storage turning arm to be connected.

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