Bus grounding switch operating mechanism of gas insulation type switch cabinet

Abstract

The utility model discloses a bus grounding switch operating mechanism of a gas insulation type switch cabinet. The bus grounding switch operating mechanism comprises a mechanism box, and a valve assembly, a locking assembly, a transmission assembly, two microswitch assemblies and an elastic trigger assembly which are arranged in the mechanism box. The transmission assembly is connected with a bus grounding switch and is provided with a handle operation hole, the mechanism box is provided with a through hole corresponding to the handle operation hole, the valve assembly is arranged on the mechanism box in a sliding mode, the through hole can be opened or closed through sliding, and the two microswitch assemblies correspond to grounding opening and grounding closing of the grounding switch respectively. The elastic trigger assembly is arranged on the transmission assembly, the transmission assembly can drive the bus grounding switch to conduct grounding closing / opening by rotating the handle operation hole, meanwhile, the elastic trigger assembly triggers the microswitch assembly, and the locking assembly can conduct unlocking and locking on the valve assembly. The bus grounding switch can be operated through the operating mechanism to enable the bus side of the switch cabinet to be grounded, and reliability and safety of equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a busbar grounding switch operating mechanism of a gas-insulated switch cabinet. Background Art

[0002] In the field of medium-voltage power transmission and distribution equipment, conventional air-insulated switchgear requires the busbar side to be grounded during inspection and maintenance to ensure the safety of maintenance personnel and equipment and avoid accidents.

[0003] However, for gas-insulated switchgear, since its main circuit uses gas insulation, the main circuit conductor can only be arranged inside a closed gas box. This results in the main circuit busbar side being unable to be grounded during equipment inspection and maintenance under normal circumstances, which will inevitably lead to safety hazards during inspection and maintenance and accidents are prone to occur.

[0004] The existing new busbar grounding switch can be used during the overhaul and maintenance of the gas-insulated switchgear, which can ground the busbar side of the entire switchgear, increase the reliability and safety of the equipment, thereby avoiding accidents caused by the live busbar side of the main circuit during overhaul and maintenance, and protecting the life safety of the operator. However, the old operating mechanism is not suitable for the new busbar grounding switch.

[0005] It can be seen that providing a busbar grounding switch operating mechanism suitable for a gas-insulated switchgear is an issue that urgently needs to be solved in the art. Utility Model Content

[0006] In view of the technical problem that the existing operating mechanism is not compatible with the busbar earthing switch, the purpose of the utility model is to provide a busbar earthing switch operating mechanism for a gas-insulated switchgear. The busbar earthing switch can be operated by the operating mechanism to ground the busbar side of the entire switchgear, thereby increasing the reliability and safety of the equipment, thereby avoiding accidents caused by the main circuit busbar side being energized during inspection and maintenance, and protecting the life safety of operators.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a busbar earthing switch operating mechanism of a gas-insulated switch cabinet, comprising a mechanism box and a valve assembly arranged in the mechanism box, a locking assembly, a transmission assembly, two micro-switch assemblies, and an elastic trigger assembly. The transmission assembly is connected to the busbar earthing switch and is provided with a handle operating hole. The mechanism box is provided with a through hole corresponding to the handle operating hole. The valve assembly can be slidably arranged on the mechanism box and located at the through hole, and the through hole can be opened or closed by sliding. The two micro-switch assemblies are connected to the switch cabinet and correspond to the grounding opening state and the grounding closing state of the busbar earthing switch respectively. The elastic trigger assembly is arranged on the transmission assembly. By rotating the handle operating hole, the transmission assembly can drive the busbar earthing switch to perform grounding closing / opening action, and at the same time drive the elastic trigger assembly to trigger the micro-switch assembly. When the micro-switch assembly is triggered, the micro-switch assembly can send a forward state signal of the busbar earthing switch to the switch cabinet, and the locking assembly unlocks and locks the valve assembly based on the corresponding signal of the current state of the switch cabinet.

[0008] Further, the transmission assembly includes a driving part and a transmission part, the driving part includes a first mounting plate, a rotating shaft, a first bearing, a first bearing seat, a first conical wheel, a transmission shaft and a sleeve, the lower part of the rotating shaft is provided with a first bearing, the first bearing is installed in the first bearing seat, the first bearing seat is fixedly installed on the bottom plate of the mechanism box, the first conical wheel and the transmission shaft are sequentially sleeved on the rotating shaft and connected by a key, the upper part of the transmission shaft is sleeved with a sleeve, the sleeve is fixedly installed on the first mounting plate, the first mounting plate is connected to the mechanism box through a plurality of support members, one end of the support member is connected to the first mounting plate, and the other end is connected to the bottom of the mechanism box,

[0009] The transmission part includes a second mounting plate, a second conical wheel, a screw and second bearings arranged at both ends of the screw, the second conical wheel is drivingly connected to the first conical wheel of the driving part, the screw is connected to the second conical wheel through a key, the second bearing is installed in the second bearing seat, the inner ring of the second bearing rotates with the screw, and the outer ring is fixed to the second bearing seat, the second bearing seat is installed on the second mounting plate, and the second mounting plate is fixed in the mechanism box.

[0010] Furthermore, a handle operating hole is provided at one end of the transmission shaft facing the mechanism box, and a through hole corresponding to the handle operating hole is provided on the mechanism box. The rotation of the driving part can be achieved by passing the operating handle through the through hole and inserting it into the handle operating hole for rotation.

[0011] Furthermore, the elastic trigger assembly includes a slider, a guide rod, two limit blocks, a spring plate, and a top block. The slider is threadedly connected to the screw rod. The guide rod is arranged through the slider and has two ends respectively connected to two second bearing seats. The two limit blocks are arranged on both sides of the screw rod to limit the slider. The spring plate is fixed on the top of the slider. The top block is arranged on the top of the spring plate to trigger the micro switch.

[0012] Furthermore, the two micro switch assemblies are fixedly arranged on the second mounting plate and are located on both sides of the screw rod. The micro switch assembly is composed of a plurality of micro switch units. The plurality of micro switch units are connected with the switch cabinet and correspond to the grounding opening state or the grounding closing state of the busbar grounding switch respectively. An insulating plate is arranged between the plurality of micro switch units, and a partition is arranged on the outer sides of the first and last two micro switch units among the plurality of micro switch units.

[0013] Furthermore, the valve assembly includes a valve plate, a handle shaft and a sliding member. A long hole is provided on the first mounting plate of the driving part. The sliding member is movably arranged in the long hole. The valve plate is connected to the sliding member. A sliding groove corresponding to the long hole is provided on the mechanism box. The handle shaft is slidably arranged in the sliding groove and connected to the valve plate. By pulling the handle shaft, the valve plate and the sliding member can be driven to move therewith, so that the valve plate can open or close the through hole during movement.

[0014] Furthermore, the locking assembly is arranged on the first mounting plate, and the locking assembly includes a locking coil and a coil core. The coil core can be slidably arranged in the locking coil, and a fixing hole corresponding to the coil core is provided on the valve plate. The coil core can switch back and forth between extending out of the locking coil and passing through the fixing hole and being arranged in the locking coil based on an external signal, thereby realizing the unlocking and locking of the valve plate.

[0015] Furthermore, a protective plate corresponding to the locking assembly is provided on the outer side of the mechanism box, and the protective plate is detachably connected to the mechanism box. The locking assembly can be manually operated by removing the protective plate to unlock or lock the valve assembly.

[0016] Furthermore, a rotatable sleeve on the handle shaft is provided with a handle sleeve, through holes are correspondingly provided on the handle sleeve and the handle shaft, circular holes are provided at both ends of the sliding groove, and notches are provided on both sides of one end of the handle sleeve facing the circular hole, the two notches are symmetrically distributed on both sides of the through hole, the longitudinal sections of the two notches are parallel to each other, and the distance between the two sections is smaller than the width of the sliding groove, the outer diameter of the handle sleeve is smaller than the diameter of the circular hole and larger than the width of the sliding groove, and the valve assembly can be unlocked and locked by rotating the handle sleeve.

[0017] When the through holes of the handle sleeve and the handle shaft are concentric, the handle sleeve cannot move in the sliding groove. By adding padlocks to the two through holes, the handle sleeve cannot rotate, thereby locking the valve assembly.

[0018] By rotating the handle sleeve so that its through hole is perpendicular to the through hole of the handle shaft, the longitudinal sections of the notches on both sides of the handle sleeve are parallel to the sliding groove between the two circular holes, and the handle sleeve can move in the sliding groove to unlock the valve assembly.

[0019] Furthermore, the operating mechanism also includes a position display component, which includes a guide block, a second sleeve, an indicator sign, a fixed shaft, a guide member, and a fixed plate. The second sleeve is fixedly connected to the guide block, and a protrusion and a slot are respectively provided on the upper and lower sides of the guide block. The indicator sign is provided with a slot corresponding to the protrusion. The indicator sign is connected to the second sleeve through a fastener and is installed on the protrusion of the guide block through the slot. The second sleeve is sleeved on the fixed shaft, and a limiting slot is provided on the second sleeve. By passing the limiting screw through the limiting slot and connecting it to the fixed shaft, the second sleeve can only rotate relative to the fixed shaft and cannot move, and the rotation angle of the second sleeve is limited. The fixed shaft is fixedly connected to the fixed plate, and the fixed plate is fixedly connected to the second mounting plate. One end of the guide member is fixedly connected to the slider of the elastic trigger assembly, and the other end can be slidably placed in the slot at the bottom of the guide block. An indication hole corresponding to the indicator sign is provided on the mechanism box, and the indicator sign can display the position switch indication in the indication hole.

[0020] The utility model provides a busbar grounding switch operating mechanism for a gas-insulated switch cabinet. The busbar grounding switch can be operated by the operating mechanism to ground the busbar side of the entire switch cabinet, thereby increasing the reliability and safety of the equipment. During operation, the operating mechanism only needs to rotate the handle to operate the transmission component to drive the transmission component to make the busbar grounding switch perform a grounding opening / closing action, thereby driving the elastic trigger component to trigger the microswitch to send a grounding opening / closing signal. The utility model has a simple structure and is easy to operate. The valve plate in the mechanism can close and open the handle operating hole by moving, and a double safety device is also provided, thereby greatly improving the safety of the operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementations.

[0022] Figure 1 A schematic diagram of the structure of the busbar grounding switch operating mechanism of the gas-insulated switchgear provided by the utility model;

[0023] Figure 2A schematic cross-sectional structure diagram of a busbar grounding switch operating mechanism of a gas-insulated switchgear provided by the utility model from a first viewing angle;

[0024] Figure 3 A schematic cross-sectional structure diagram of a busbar grounding switch operating mechanism of a gas-insulated switchgear provided by the utility model from a second viewing angle;

[0025] Figure 4 A schematic cross-sectional structure diagram of a busbar grounding switch operating mechanism of a gas-insulated switchgear provided by the utility model from a third viewing angle;

[0026] Figure 5 A schematic diagram of the structure of the handle sleeve in the busbar earthing switch operating mechanism of the gas-insulated switchgear provided by the utility model when locked;

[0027] Figure 6 A schematic diagram of the structure of the busbar earthing switch operating mechanism of the gas-insulated switchgear provided by the utility model when the handle sleeve is unlocked;

[0028] Figure 7 A schematic diagram of the structure of a guide block of a display assembly in the center of a busbar earthing switch operating mechanism of a gas-insulated switchgear provided by the utility model;

[0029] Figure 8 The utility model provides a schematic structural diagram of a position display component in a busbar earthing switch operating mechanism of a gas-insulated switch cabinet.

[0030] Illustration Description:

[0031] Mechanism box 100, valve assembly 200, locking assembly 300, transmission assembly 400, micro switch assembly 500, elastic trigger assembly 600, handle operation hole 700, through hole 800, position display assembly 900;

[0032] Panel 110, valve plate 210, handle shaft 220, sliding member 230, long hole 240, sliding groove 250, fixing hole 260, round hole 270, notch 280, locking coil 310, coil core 320, protective plate 330, handle sleeve 340, through hole 350, driving part 410, transmission part 420, first mounting plate 411, rotating shaft 412, first bearing 413, first bearing seat 414, first conical wheel 415, transmission shaft 416, sleeve 417, support member 418, first Second mounting plate 421, second conical wheel 422, screw 423, second bearing 424, second bearing seat 425, micro switch unit 510, insulating plate 520, partition 530, slider 610, guide rod 620, limit block 630, spring plate 640, top block 650, guide block 910, protrusion 911, slot 912, second sleeve 920, limit slot 921, indicator plate 930, fixed shaft 940, guide member 950, fixed plate 960, limit screw 970, indicator hole 980. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0034] See also Figure 1 , Figure 2 , which is a structural schematic diagram of the busbar grounding switch operating mechanism of the gas-insulated switchgear provided by the utility model.

[0035] According to the drawings, the busbar grounding switch operating mechanism of the gas-insulated switchgear provided by the utility model includes a mechanism box 100 and a valve assembly 200, a locking assembly 300, a transmission assembly 400, two micro switch assemblies 500, and an elastic trigger assembly 600 arranged in the mechanism box 100.

[0036] Among them, the transmission assembly 400 is connected to the busbar grounding switch and is provided with a handle operating hole 700. The mechanism box 100 is provided with a through hole 800 corresponding to the handle operating hole 700. The valve assembly 200 can be slidably arranged at the through hole 800 of the mechanism box 100, and the through hole 800 can be opened or closed by sliding. The two micro switch assemblies 500 correspond to the grounding opening state and the grounding closing state of the busbar grounding switch respectively. The elastic trigger assembly 600 is arranged on the transmission assembly 400. By rotating the handle operating hole 700, the transmission assembly 400 can drive the busbar grounding switch to perform grounding opening / closing action, and at the same time drive the elastic trigger assembly 600 to trigger the micro switch assembly 500. When the micro switch assembly 500 is triggered, the micro switch assembly 500 can send the current state signal of the busbar grounding switch to the opening cabinet, and the locking assembly 300 unlocks and locks the valve assembly 200 based on the corresponding signal of the current state of the switch cabinet.

[0037] Furthermore, the mechanism box 100 is a structural body used to carry other components.

[0038] The mechanism box 100 is installed as a structural body on the supporting component of the gas box of the gas-insulated switchgear. The operation surface of the mechanism box 100 is equipped with a panel 110. After the panel 110 is installed on the mechanism box 100, it is fixed by fasteners.

[0039] The transmission assembly 400 is located in the mechanism box 100 and is connected to the transmission component of the busbar earthing switch. The two rotate synchronously. By driving the transmission assembly 400, the busbar earthing switch can be driven to close / open, thereby realizing the opening / closing operation of the switch cabinet.

[0040] The transmission assembly 400 includes a driving portion 410 and a transmission portion 420 , which are in transmission connection.

[0041] The driving unit 410 includes a first mounting plate 411 , a rotating shaft 412 , a first bearing 413 , a first bearing seat 414 , a first conical wheel 415 , a transmission shaft 416 and a sleeve 417 .

[0042] A first bearing 413 is provided at the lower portion of the rotating shaft 412, and the first bearing 413 is installed in a first bearing seat 414. The first bearing seat 414 is fixedly installed on the bottom plate of the mechanism box 100. In this scheme, the first bearing seat 414 is preferably connected to the mechanism box 100 by fasteners. The first conical wheel 415 and the transmission shaft 416 are sequentially sleeved on the rotating shaft 412 and connected by a key so that the three move synchronously. A shaft sleeve 417 is sleeved on the upper portion of the transmission shaft 412, and the shaft sleeve 417 is fixedly installed on the first mounting plate 411. The first mounting plate 411 is connected to the mechanism box 100 through a plurality of support members 418, and one end of the support member 418 is connected to the first mounting plate 411, and the other end is connected to the bottom of the mechanism box 100.

[0043] The utility model preferably has a mounting hole on the first mounting plate 411, and the shaft sleeve 417 is fixed to the first mounting plate 411 by fixing the shaft sleeve 417 in the mounting hole, so that the rotating shaft 412, the first conical wheel 415 and the transmission shaft 416 can only rotate synchronously and cannot move.

[0044] The number of support members 418 is not limited in this solution and can be determined according to actual needs.

[0045] In this solution, the rotating shaft 412 of the driving unit 410 is connected to the busbar grounding switch, and the lower end of the rotating shaft 412 is directly connected to the inside of the busbar grounding switch (synchronous rotation and transmission), that is, when the rotating shaft 412 rotates, the busbar grounding switch is closed / opened.

[0046] The driving part 410 of such structure rotates the transmission shaft 416, and due to the motion transmission property, drives the rotating shaft 412 and the first conical wheel 415 connected with the key to rotate, and the rotating shaft 412 further drives the busbar grounding switch to perform closing / opening operations.

[0047] The first conical wheel 415 is in transmission connection with the transmission part 420 , so that the transmission part 420 can be driven to move by rotating the transmission shaft 416 .

[0048] The transmission part 420 includes a second mounting plate 421 , a second conical wheel 422 , a screw rod 423 and second bearings 424 disposed at both ends of the screw rod 423 .

[0049] The second conical wheel 422 is transmission-connected to the first conical wheel 415 of the driving unit 410, the screw rod 423 is connected to the second conical wheel 422 through a key, and the second bearing 424 is installed in the second bearing seat 425, so that the inner ring of the second bearing 424 rotates with the screw rod 423, and the outer ring is fixed to the second bearing seat 425, and the second bearing seat 425 is installed on the second mounting plate 421, and the second mounting plate 421 is fixed in the mechanism box 100.

[0050] Since the second conical wheel 422 of the transmission part 420 is transmission-connected to the first conical wheel 415 of the driving part 410, when the transmission shaft 416 is rotated, the transmission shaft 416 drives the first conical wheel 415 to rotate, and then drives the second conical wheel 422 transmission-connected to the first conical wheel 415 to rotate, thereby driving the screw 423 connected to the second conical wheel 422 to rotate.

[0051] In order to improve the convenience of operation, a handle operation hole 700 is provided at one end of the transmission shaft 416 facing the panel 110, and a through hole 800 corresponding to the handle operation hole 700 is provided on the panel 110, so that the operation handle is passed through the through hole 800, inserted into the handle operation hole 700, and rotated to realize the movement of the driving part 410, and the driving part 410 drives the transmission part 420 to move, which greatly improves the convenience of operation.

[0052] The elastic trigger assembly 600 is connected to the transmission part 420 , and the rotation of the transmission part 420 drives the elastic trigger assembly 600 to trigger the micro switch assembly 500 .

[0053] The elastic trigger assembly 600 includes a slider 610 , a guide rod 620 , two limit blocks 630 , a spring plate 640 , and a top block 650 .

[0054] The slider 610 is threadedly connected to the screw rod 423. When the screw rod 423 rotates, the slider 610 can be moved. This is a well-known technology in the art and will not be described in detail here.

[0055] The guide rod 620 is integrally disposed in the slider 610 , and both ends are respectively connected to the two second bearing seats 425 . The guide rod 620 linearly guides the movement of the slider 610 .

[0056] Two limit blocks 630 are arranged on both sides of the screw rod 423 to limit the slider 610 and restrict the moving range of the slider 610 .

[0057] The spring plate 640 is fixed on the top of the slider 610. The spring plate 640 has elastic deformation force. When the spring plate 640 encounters an obstacle and is squeezed, it can be elastically deformed. When there is no obstacle, it can be restored to its original state due to the elastic restoring force.

[0058] The top block 650 is disposed on the top of the spring plate 640 and is used to trigger the micro switch 500 .

[0059] The elastic trigger assembly 600 of such a structure cooperates with the transmission assembly 400 , and the transmission assembly 400 drives the elastic trigger assembly 600 to move, thereby being able to trigger the two micro switch assemblies 500 .

[0060] Two micro switch assemblies 500 are fixedly arranged on the second mounting plate 421 and are located on both sides of the screw rod 423. The two micro switch assemblies 500 are connected to the switch cabinet and correspond to the grounding open state and the grounding closed state of the busbar grounding switch respectively. In this way, by rotating the handle operating hole 700, the elastic trigger assembly 600 moves on the screw rod 423, and the micro switch assembly 500 can be triggered by the movement. The micro switch assembly 500 sends the current state signal of the busbar grounding switch to the switch cabinet.

[0061] The micro switch assembly 500 is composed of a plurality of micro switch units 510, and the plurality of micro switch units 510 are connected to the switch cabinet. For example, the micro switch unit 510 is connected to the instrument box of the switch cabinet with a plurality of wires, and the current status signal of the busbar grounding switch is transmitted or displayed on the panel of the instrument box of the switch cabinet, or is connected to the loop of other components as a condition and basis for operation.

[0062] An insulating plate 520 is provided between the plurality of micro switch units 510 , and the plurality of micro switch units 510 are isolated by the insulating plate 520 . A partition plate 530 is provided on the outer sides of the first and last two micro switch units 510 among the plurality of micro switch units 510 .

[0063] The micro switch assembly 500 cooperates with the elastic trigger assembly 600, and the elastic trigger assembly 600 is located on the screw rod 423 and between the two micro switch assemblies 500. By rotating the handle operation hole 700 of the driving part 410 clockwise or counterclockwise, the elastic trigger assembly 600 can move left or right along the screw rod 423. By moving, the top block 650 on the elastic trigger assembly 600 contacts the micro switch assembly 500 and triggers it.

[0064] The valve assembly 200 is slidably disposed on the panel 110 of the mechanism cabinet 100 and is located around the through hole 800 on the panel 110. When sliding, the through hole 800 can be closed or opened to improve the safety of the operating mechanism.

[0065] The valve assembly 200 includes a valve plate 210, a handle shaft 220 and a sliding member 230. A long hole 240 is provided on the first mounting plate 411 of the driving part 410. The sliding member 230 is movably arranged in the long hole 240. The valve plate 210 is connected to the sliding member 230. A sliding groove 250 corresponding to the long hole 240 is provided on the panel 110 of the mechanism box 100. The handle shaft 220 is slidably arranged in the sliding groove 250 and connected to the valve plate 210. In this way, the valve plate 210 and the sliding member 230 can be driven to move with it by pulling the handle shaft 220.

[0066] like Figure 1 In this example, the handle shaft 220 is at the leftmost end of the sliding groove 250, and the valve plate 210 follows the handle shaft 220 and is located on the left side. The through hole 800 is in an open state. By pulling the handle shaft 220 to the right to move it in the sliding groove 250, when it moves to the rightmost end of the sliding groove 250, the valve plate 210 can block the through hole 800 and close it.

[0067] In order to further improve the safety of the operating mechanism, the present solution is provided with a locking assembly 300, which is cooperatively connected with the valve assembly 200 and can unlock and lock the valve assembly 200 based on external signals to avoid staff from making misoperations and causing safety risks.

[0068] The locking assembly 300 is arranged on the first mounting plate 411. The locking assembly 300 of this scheme is composed of a locking coil 310 and a coil core 320. The coil core 320 can be slidably arranged in the locking coil 310. A fixing hole 260 corresponding to the coil core 320 is provided on the valve plate 210. The coil core 320 can switch back and forth between extending out of the locking coil 310 and penetrating into the fixing hole 260 and being arranged in the locking coil 310 based on external signals.

[0069] The power supply circuit of the locking coil 310 is connected in series with an external signal contact. When the external conditions meet the unlocking / locking conditions, the on / off state of the signal contact is reflected, and the state causes the locking coil 310 to be energized or de-energized, and the coil core 320 will then retract / extend.

[0070] When the external conditions meet the locking requirements, the signal contact is in the off state, so that the locking coil 310 loses power, and the coil core 320 is reset and extended to enter the fixing hole 260 on the valve plate 210, that is, the locking is completed, and the valve plate 210 cannot slide due to the influence of the coil core 320;

[0071] When the external conditions meet the unlocking requirements, the signal contact is in the on state, so that the locking coil 310 is energized, and the coil core 320 is retracted to unlock, and the sliding of the valve plate 210 is no longer affected by the coil core 320;

[0072] When the external input signal cannot operate the grounding mechanism, the locking coil 310 is not attracted, the coil core 320 extends out and passes into the fixed hole 260, the valve plate 210 cannot move, and the through hole 800 is closed. When the external input signal can operate the grounding mechanism, the locking coil 310 is attracted, and the coil core 320 retracts into the locking coil 310. At this time, the valve plate 210 can move. The valve plate 210 is moved to the through hole 800 to open, and the operating handle is used to pass through the through hole 800 and rotate the handle operating hole 700 to realize grounding of the operating mechanism.

[0073] In order to improve the reliability of the operating mechanism, the present invention provides a protective plate 330 corresponding to the locking assembly 300 on the outside of the mechanism box 100. The protective plate 330 is connected to the mechanism box 100 in a detachable manner. In this way, in an emergency, the protective plate 330 can be removed and the locking assembly 300 can be manually operated to unlock or lock the valve assembly 200.

[0074] In order to further improve the safety of the operating mechanism, the present solution is also provided with a structure for locking the valve plate 210, which cooperates with the above-mentioned locking assembly 300 to form a double safety guarantee, thereby greatly improving the safety of the operating mechanism.

[0075] The above-mentioned locking structure is a handle cover 340, which is cylindrical and rotatably mounted on the handle shaft 220. The handle cover 340 and the handle shaft 220 are correspondingly provided with through holes 350, and circular holes 270 are provided at both ends of the sliding groove 250. Notches 280 are symmetrically opened on both sides of the end of the handle cover 340 facing the circular hole 270. The longitudinal sections of the two notches 280 are parallel to each other, and the distance between the two sections is smaller than the width of the sliding groove 250. The outer diameter of the handle cover 340 is smaller than the diameter of the circular hole 270, and larger than the width of the sliding groove 250.

[0076] like Figure 5 , because the handle shaft 220 cannot rotate, when the handle sleeve 340 is rotated so that the handle sleeve 340 and the through hole 350 of the handle shaft 220 are concentric, the valve assembly 200 cannot move in the sliding groove 250 due to the outer diameter of the handle sleeve 340. At this time, a padlock can be added to lock the valve assembly 200;

[0077] like Figure 6 When the handle cover 340 is rotated so that its through hole 350 is perpendicular to the through hole 350 of the handle shaft 220, the longitudinal sections of the notches 280 on both sides of the handle cover 340 are parallel to the sliding groove 250 between the two circular holes 270. Since the distance between the sections of the handle cover 340 is smaller than the width of the sliding groove 250, the valve assembly 200 can move freely in the sliding groove 250 to open / close the handle operation hole 700.

[0078] The handle sleeve 340 cooperates with the circular hole 270 and the sliding groove 250. When the handle sleeve 340 and the through hole 350 of the handle shaft 220 are concentric, the handle sleeve 340 and the sliding groove 250 are locked, so that the handle shaft 220 cannot slide in the sliding groove 250, thereby locking the valve plate 210. The two through holes 350 can be locked by adding a padlock. Due to the padlock, the handle sleeve 340 cannot rotate. By releasing the padlock and rotating the handle sleeve 340 ninety degrees to make the two through holes 350 perpendicular to each other, the handle sleeve 340 releases the lock on the sliding groove 250, and the handle sleeve 340 can slide in the sliding groove 250. At this time, the lock on the valve plate 220 is released and the valve plate 220 can be driven to move by pulling the handle shaft 220, thereby greatly improving the safety of the operating mechanism.

[0079] The present solution is also provided with a position display component 900, through which the current state of the switch cabinet can be displayed on the mechanism box 100, so that one only needs to observe the mechanism box 100 to know whether the switch is currently closed or open, which greatly improves the convenience of the operating mechanism.

[0080] The position display assembly 900 includes a guide block 910 , a second shaft sleeve 920 , an indicator plate 930 , a fixed shaft 940 , a guide member 950 , and a fixed plate 960 .

[0081] The second sleeve 920 is fixedly connected to the guide block 910 . In this solution, the second sleeve 920 is preferably connected to the guide block 910 by welding. The guide block 910 is provided with a protrusion 911 on the top and a groove 912 on the bottom.

[0082] The indicator plate 930 is provided with a notch corresponding to the protrusion 911 , and the indicator plate 930 is connected to the second sleeve 920 via a fastener, and is installed on the protrusion 911 of the guide block 910 via the notch. The indicator plate 930 rotates synchronously with the second sleeve 920 and the guide block 910 .

[0083] The second sleeve 920 is sleeved on the fixed shaft 940, and a limiting groove 921 is provided on the second sleeve 920. The limiting screw 970 is connected to the fixed shaft 940 by passing through the limiting groove 912. The limiting screw 970 makes the second sleeve 920 only rotate relative to the fixed shaft 940 and cannot move, and limits the rotation angle of the limiting screw 970. The fixed shaft 940 is connected to the fixing plate 960, and the fixing plate 960 is fixedly connected to the second mounting plate 421.

[0084] One end of the guide member 950 is connected to the slider 610 of the elastic trigger assembly 600, and the other end can be slidably placed in the groove 912 at the bottom of the guide block 910. The slider 610 moves, driving one end of the guide member 950 to slide in the groove 912, thereby causing the guide block 910 to be subjected to force, driving the indicator plate 930 to rotate around the fixed axis 940. An indicator hole 980 corresponding to the indicator plate 930 is provided on the panel 110 of the mechanism box 100, and the indicator plate 930 displays the position switch indication in the indicator hole 980.

[0085] In actual application, when the elastic trigger component 600 triggers the micro switch component 500 during movement, the micro switch component 500 sends the current bus switch status information to the switch cabinet, and the slider 610 of the elastic trigger component 600 simultaneously drives the indicator sign 930 to rotate, and the indicator sign 930 displays the current position in the indicator hole 980.

[0086] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A busbar grounding switch operating mechanism for a gas-insulated switchgear, characterized in that: It includes a mechanism box and a valve assembly arranged in the mechanism box, a locking assembly, a transmission assembly, two micro switch assemblies, and an elastic trigger assembly. The transmission assembly is connected to the busbar earthing switch and is provided with a handle operating hole. The mechanism box is provided with a through hole corresponding to the handle operating hole. The valve assembly can be slidably arranged on the mechanism box and located at the through hole, and the through hole can be opened or closed by sliding. The two micro switch assemblies are connected with the switch cabinet and correspond to the grounding opening state and the grounding closing state of the busbar earthing switch respectively. The elastic trigger assembly is arranged on the transmission assembly. By rotating the handle operating hole, the transmission assembly can drive the busbar earthing switch to perform grounding closing / opening action, and at the same time drive the elastic trigger assembly to trigger the micro switch assembly. When the micro switch assembly is triggered, the micro switch assembly can send a forward state signal of the busbar earthing switch to the switch cabinet, and the locking assembly unlocks and locks the valve assembly based on the corresponding signal of the current state of the switch cabinet.

2. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 1, characterized in that: The transmission assembly includes a driving part and a transmission part, the driving part includes a first mounting plate, a rotating shaft, a first bearing, a first bearing seat, a first conical wheel, a transmission shaft and a sleeve, the lower part of the rotating shaft is provided with a first bearing, the first bearing is installed in the first bearing seat, the first bearing seat is fixedly installed on the bottom plate of the mechanism box, the first conical wheel and the transmission shaft are sequentially sleeved on the rotating shaft and connected by a key, the upper part of the transmission shaft is sleeved with a sleeve, the sleeve is fixedly installed on the first mounting plate, the first mounting plate is connected to the mechanism box through a plurality of support members, one end of the support member is connected to the first mounting plate, and the other end is connected to the bottom of the mechanism box, The transmission part includes a second mounting plate, a second conical wheel, a screw and second bearings arranged at both ends of the screw, the second conical wheel is drivingly connected to the first conical wheel of the driving part, the screw is connected to the second conical wheel through a key, the second bearing is installed in the second bearing seat, the inner ring of the second bearing rotates with the screw, and the outer ring is fixed to the second bearing seat, the second bearing seat is installed on the second mounting plate, and the second mounting plate is fixed in the mechanism box.

3. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 2, characterized in that: A handle operating hole is provided at one end of the transmission shaft facing the mechanism box, and a through hole corresponding to the handle operating hole is provided on the mechanism box. The rotation of the driving part can be achieved by passing the operating handle through the through hole and inserting it into the handle operating hole for rotation.

4. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 1, characterized in that: The elastic trigger assembly includes a slider, a guide rod, two limit blocks, a spring plate, and a top block. The slider is threadedly connected to the screw rod. The guide rod is arranged through the slider and has two ends respectively connected to two second bearing seats. The two limit blocks are arranged on both sides of the screw rod to limit the slider. The spring plate is fixed on the top of the slider. The top block is arranged on the top of the spring plate to trigger the micro switch.

5. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 1, characterized in that: The two micro switch assemblies are fixedly arranged on the second mounting plate and are located on both sides of the screw rod. The micro switch assembly is composed of a plurality of micro switch units. The plurality of micro switch units are connected with the switch cabinet and correspond to the grounding opening state or the grounding closing state of the busbar grounding switch respectively. An insulating plate is arranged between the plurality of micro switch units, and a partition is arranged on the outer sides of the first and last two micro switch units among the plurality of micro switch units.

6. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 2, characterized in that: The valve assembly includes a valve plate, a handle shaft and a sliding member. A long hole is provided on the first mounting plate of the driving part. The sliding member is movably arranged in the long hole. The valve plate is connected to the sliding member. A sliding groove corresponding to the long hole is provided on the mechanism box. The handle shaft is slidably arranged in the sliding groove and connected to the valve plate. By pulling the handle shaft, the valve plate and the sliding member can be driven to move with it, so that the valve plate can open or close the through hole during movement.

7. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 6, characterized in that: The locking assembly is arranged on the first mounting plate, and the locking assembly includes a locking coil and a coil core. The coil core can be slidably arranged in the locking coil, and a fixing hole corresponding to the coil core is provided on the valve plate. The coil core can switch back and forth between extending out of the locking coil and passing through the fixing hole and being arranged in the locking coil based on an external signal, so as to realize the unlocking and locking of the valve plate.

8. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 1, characterized in that: A protective plate corresponding to the locking assembly is provided on the outer side of the mechanism box. The protective plate is detachably connected to the mechanism box. The locking assembly can be manually operated by removing the protective plate to unlock or lock the valve assembly.

9. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 6, characterized in that: The rotatable sleeve on the handle shaft is provided with a handle sleeve, and through holes are correspondingly provided on the handle sleeve and the handle shaft, and circular holes are provided at both ends of the sliding groove. Notches are provided on both sides of one end of the handle sleeve facing the circular hole, and the two notches are symmetrically distributed on both sides of the through hole. The longitudinal sections of the two notches are parallel to each other, and the distance between the two sections is smaller than the width of the sliding groove. The outer diameter of the handle sleeve is smaller than the diameter of the circular hole and larger than the width of the sliding groove. The valve assembly can be unlocked and locked by rotating the handle sleeve. When the through holes of the handle sleeve and the handle shaft are concentric, the handle sleeve cannot move in the sliding groove. By adding padlocks to the two through holes, the handle sleeve cannot rotate, thereby locking the valve assembly. By rotating the handle sleeve so that its through hole is perpendicular to the through hole of the handle shaft, the longitudinal sections of the notches on both sides of the handle sleeve are parallel to the sliding groove between the two circular holes, and the handle sleeve can move in the sliding groove to unlock the valve assembly.

10. The busbar grounding switch operating mechanism of the gas-insulated switchgear according to claim 1, characterized in that: The operating mechanism also includes a position display component, which includes a guide block, a second sleeve, an indicator plate, a fixed shaft, a guide member, and a fixed plate. The second sleeve is fixedly connected to the guide block, and a protrusion and a slot are respectively provided on the upper and lower sides of the guide block. The indicator plate is provided with a slot corresponding to the protrusion. The indicator plate is connected to the second sleeve through a fastener and is installed on the protrusion of the guide block through the slot. The second sleeve is sleeved on the fixed shaft, and a limiting slot is provided on the second sleeve. By passing the limiting screw through the limiting slot and connecting it to the fixed shaft, the second sleeve can only rotate relative to the fixed shaft and cannot move, and the rotation angle of the second sleeve is limited. The fixed shaft is fixedly connected to the fixed plate, and the fixed plate is fixedly connected to the second mounting plate. One end of the guide member is fixedly connected to the slider of the elastic trigger assembly, and the other end can be slidably placed in the slot at the bottom of the guide block. An indicator hole corresponding to the indicator plate is provided on the mechanism box, and the indicator plate displays the position switch indication in the indicator hole.

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