Isolation switch

Abstract

An isolating switch comprises an operating device and a plurality of switch units, the operating device comprises a device shell, an operating mechanism and at least two trippers, the operating mechanism and the trippers are arranged in the device shell, and the trippers comprise a first tripper and a second tripper. The first release is at least used for driving the operating mechanism to release when a current and / or voltage fault occurs in a circuit network electrically connected with the input end of a switching device to which the operating device belongs; the second release is at least used for driving the operating mechanism to release when a current and / or voltage fault occurs in a circuit network electrically connected with the output end of the switching device to which the operating device belongs; the plurality of switch units comprise at least one first switch unit and a plurality of second switch units, and the sectional areas of a first static contact, a second static contact and a moving contact of the first switch unit are larger than those of a first static contact, a second static contact and a moving contact of the second switch unit. According to the invention, the troubleshooting efficiency can be improved and the troubleshooting difficulty can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of low voltage apparatus, concretely relates to an isolating switch. BACKGROUND

[0002] 1. In the existing photovoltaic power generation system, a power distribution cabinet system is usually arranged between the photovoltaic panel circuit network and the load / mains power grid, and an isolating switch is arranged in the power distribution cabinet system to connect and disconnect the photovoltaic panel circuit network and the load / mains power grid. The isolating switch is generally provided with a trip device to drive the isolating switch to trip and open when current and / or voltage faults occur. Generally, current and / or voltage faults occur in the photovoltaic panel circuit network, which will cause the isolating switch to trip and open. However, when current and / or voltage faults also occur in the power distribution cabinet system or the load / mains power grid, the product will also trip upon receiving the fault signal. Therefore, once the isolating switch trips and opens, the photovoltaic panel circuit network, the power distribution cabinet system and the load / mains power grid system need to be fully investigated, which is low in investigation efficiency and difficult.

[0003] 2. In the prior art, the current-carrying capacity of the switch unit of the isolating switch is poor, and high temperature heating is easily generated when high current circuits are connected, thereby causing safety hazards and affecting the service life of the isolating switch.

[0004] 3. In the prior art, when multiple switch units are stacked and simultaneously operated, the consistency of the opening and closing of the multiple switch units is poor. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of the prior art and providing an isolating switch that improves investigation efficiency, increases current-carrying capacity and improves the opening and closing consistency of multiple switch units.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides an isolating switch, which comprises an operating device and multiple switch units stacked, the operating device comprises a device shell, an operating mechanism and at least two trip devices arranged in the device shell, the at least two trip devices comprise a first trip device and a second trip device,

[0008] The first trip device is used to drive the operating mechanism to trip at least when current and / or voltage faults occur in the circuit network electrically connected to the input end of the switch electric appliance to which the operating device belongs;

[0009] The second trip device is used to drive the operating mechanism to trip at least when current and / or voltage faults occur in the circuit network electrically connected to the output end of the switch electric appliance to which the operating device belongs;

[0010] The plurality of switch units includes at least one first switch unit and a plurality of second switch units, and the current carrying capacity of the first switch unit is greater than the current carrying capacity of the second switch unit.

[0011] In a possible implementation, the second tripper is a conditional tripper, and the reset operation of the conditional tripper and the reclosing operation of the operating mechanism are independent of each other; after the operating mechanism is tripped by the conditional tripper, the conditional tripper is reset from the tripper action state to the tripper reset state by external force, and then the operating mechanism is allowed to reclose.

[0012] In a possible implementation, the conditional tripper includes a tripping rod for driving the operating mechanism to trip, and the tripping rod includes a reset button; in the tripper action state, one end of the reset button protrudes outside the device shell, and the tripping rod is in limited cooperation with the reclosing part to keep the reclosing part in the reclosing part tripped position.

[0013] In a possible implementation, of the at least two trippers, one tripper is a conditional tripper, and the rest of the trippers are general trippers; the reset operation of the conditional tripper and the reclosing operation of the operating mechanism are independent of each other; after the operating mechanism is tripped by the conditional tripper, the conditional tripper is reset from the tripper action state to the tripper reset state by external force, and then the operating mechanism is allowed to reclose; when the operating mechanism is reclosed from the operating mechanism tripped state, the general tripper is reset from the tripper action state to the tripper reset state.

[0014] In a possible implementation, the operating mechanism includes a tripping part, a locking part and a reclosing part arranged in rotation respectively, and the reclosing part is in first limited cooperation with the locking part to keep the locking part in latching cooperation with the tripping part.

[0015] The conditional tripper drives the reclosing part to rotate to cancel the first limited cooperation with the locking part, and then the locking part and the tripping part cancel the latching cooperation, so that the operating mechanism is switched from the operating mechanism closed state to the operating mechanism tripped state; in the tripper action state, the conditional tripper keeps the reclosing part in the reclosing part tripped position, so that the operating mechanism cannot be reclosed.

[0016] In a possible implementation, the length direction, the width direction and the height direction of the operating mechanism are direction d1, direction d2 and direction d3 respectively; the operating mechanism includes a support, the tripping part, the locking part and the reclosing part are arranged in rotation on the support respectively, and the rotation axes of the tripping part, the locking part and the reclosing part are all parallel to the direction d3, and the tripping part, the locking part and the reclosing part are arranged in sequence along the direction d2.

[0017] The first tripping device is arranged side by side with the operating mechanism along the direction d3, the first tripping device and the reclosing device are arranged in sequence along the direction d3, the second tripping device is arranged side by side with the operating mechanism along the direction d1, the second tripping device and the reclosing device are arranged in sequence along the direction d1, and the first tripping device is located on the same side of the reclosing device and the second tripping device along the direction d3; in the projection of the operating device perpendicular to the direction d3, the second tripping device is located on the same side of the operating mechanism and the first tripping device.

[0018] In a possible implementation, the operating mechanism further comprises an operating shaft and a rocker arranged rotatably on the support and having rotation axes parallel to the direction d3 respectively, a linkage structure, a front connecting rod, a rear connecting rod, a main spring, and a driving member having a rotation axis parallel to the direction d3 and being used for driving connection with the rotating contact assembly of the switch electric appliance; the operating shaft is drivingly connected with the rocker through the linkage structure, the jump pin is arranged rotatably on the support through a jump pin shaft at one end and is snap-fitted with the lock pin at the other end, the two ends of the front connecting rod are rotatably connected with the middle part of the jump pin and the one end of the rear connecting rod through a front connecting shaft and a rear connecting shaft respectively, the other end of the rear connecting rod is rotatably connected with the driving member, and the two ends of the main spring are connected to the rear connecting shaft and the rocker respectively; the rocker and the driving member are respectively located at the two ends of the operating mechanism along the direction d1, and the jump pin shaft and the reclosing device are respectively located at the two ends of the operating mechanism along the direction d2.

[0019] In a possible implementation, the switch unit comprises a housing and two first static contacts and a second static contact and a rotating contact assembly installed in the housing, two arc-extinguishing grid groups are arranged on the two sides of the rotating contact assembly, the two first static contacts and the second static contact are arranged on the two sides of the rotating contact assembly in a spaced manner, and the first static contact and the second static contact are arranged in a cross manner with the arc-extinguishing grid groups, the first static contact and / or the second static contact of the first switch unit comprises a first contact part, a first connecting part and at least two first wiring parts which are integrally formed and connected in sequence, the first contact part is matched with the moving contact of the rotating contact assembly, and the at least two first wiring parts extend outward of the housing and are used for external electrical connection.

[0020] In a possible implementation, the first static contact and the second static contact comprise two parallel first wiring parts, the two first wiring parts are perpendicular to the first connecting part, one end of the first connecting part is connected to the first contact part, the first contact part comprises a first overlapping part and a first extension part, the first extension part is rectangular, the length of the first extension part is greater than or equal to the distance between the two first wiring parts, an included angle is formed between the first extension part and the first connecting part, the included angle is recessed in the direction of the first connecting part to form a limiting recess, and the limiting recess is used for limiting cooperation with the arc-extinguishing grid group.

[0021] In a possible implementation, the switch unit comprises a shell, two first static contacts and a second static contact arranged in the shell, and a rotating contact assembly, the rotating contact assembly comprises a support cover, a movable contact, and a support base arranged in layers, the support base and the support cover of a plurality of the second switch units are provided with a second through hole, at least one drive shaft passes through the second through hole and is connected with the rotating contact assemblies of the plurality of second switch units, and the drive shaft is directly or indirectly connected with the operating mechanism.

[0022] In a possible implementation, the middle part of the second switch unit is provided with one of the drive shafts, the first contact and the second contact are provided with a second through hole, one of the drive shafts passes through the middle part of the movable contact, and all the second switch units are penetrated by the drive shaft.

[0023] In a possible implementation, the support base and the support cover are provided with two second through holes, the middle parts of the plurality of second switch units are provided with two parallel drive shafts, and the two drive shafts pass through the two second through holes, so that the movable contact is arranged between the two drive shafts.

[0024] In a possible implementation, the switch unit comprises a shell, two first static contacts and a second static contact arranged in the shell, and a rotating contact assembly, the rotating contact assembly comprises a support cover, a movable contact, and a support base arranged in layers, the support base and the support cover of a plurality of the second switch units are provided with a second through hole, at least one drive shaft passes through the second through hole and is connected with the rotating contact assemblies of the plurality of second switch units, and the drive shaft is directly or indirectly connected with the operating mechanism.

[0025] In a possible implementation, the movable contact further comprises a contact support and at least one fixing shaft, the contact support is provided with two grooves on opposite surfaces, the two grooves are through structures along the length direction of the movable contact, the middle parts of the first contact and the second contact of the movable contact are arranged in the two grooves respectively, and the at least one fixing shaft penetrates the first contact, the second contact, the contact support, and the at least one elastic member, so that the first contact, the second contact, the contact support, and the at least one elastic member are fixed as a whole, the movable contact accommodating groove is provided with limiting structures matched with the contact support, and the contact support is arranged in the movable contact accommodating groove.

[0026] In a possible implementation manner, the switch unit comprises a shell and two first static contacts and a second static contact and a rotating contact assembly arranged in the shell, the rotating contact assembly comprises a support cover, a movable contact and a support base arranged in layers, a hot melt column and a hot melt hole are arranged between the support base and the support cover, or a hot melt column and a hot melt groove are arranged between the support base and the support cover, and the support base and the support cover are fixedly installed through the hot melt column and the hot melt hole or the hot melt column and the hot melt groove.

[0027] In a possible implementation manner, the switch unit comprises a shell and two first static contacts and a second static contact and a rotating contact assembly arranged in the shell, the rotating contact assembly comprises a support cover, a movable contact and a support base arranged in layers, and the support base and the support cover are made of an insulating gas generating material.

[0028] In a possible implementation manner, the cross-sectional area of the first static contact and the second static contact of the first switch unit is greater than the cross-sectional area of the first static contact and the second static contact of the second switch unit, and the cross-sectional area of the movable contact of the first switch unit is greater than the cross-sectional area of the movable contact of the second switch unit.

[0029] The disconnector in the switch provided by the utility model has at least two disconnector, and each disconnector corresponds to different circuit networks, so that when a disconnector drives the operating mechanism to be tripped, the circuit network that is faulty can be locked according to the corresponding relationship between the disconnector and the circuit network, thereby reducing the search range of the fault, improving the fault checking efficiency and reducing the difficulty of fault checking.

[0030] Further, the second through hole is arranged on the support base and the support cover of the plurality of second switch units, and at least one driving shaft passes through the second through hole, so that the consistency of the opening and closing of the plurality of second switch units can be improved.

[0031] Further, the tripping state of the disconnector of the conditional disconnector plays a warning and limiting role, so that the switch electrical apparatus is prevented from being closed before the fault is eliminated, and the safety of personnel is ensured.

[0032] Further, the switch unit comprises a rotating contact assembly, which comprises a support cover, a movable contact and a support seat arranged in layers, a movable contact accommodating groove is arranged between the support cover and the support seat, the movable contact further comprises a contact support, the movable contact is installed on the contact support, the contact support is installed in the movable contact accommodating groove, the support cover and the support seat are fixed by hot riveting, the creepage distance is improved, and the insulation protection performance of the movable contact can be further improved, so that the risk of breakdown of other switch units when the first switch unit is turned on to a high current can be coped with.

[0033] Further, the first fixed contact and / or the second fixed contact of the first switch unit are provided with at least two first wiring parts and are electrically connected with the outside, the contact area of the first fixed contact and / or the second fixed contact with the external conductor can be increased, the current carrying capacity of the first fixed contact and / or the second fixed contact can be increased, and the safety hazard caused by overheating of the first fixed contact and / or the second fixed contact can be avoided.

[0034] Further, the first upper partition plate and the first lower partition plate are arranged in the switch unit, the rotating contact assembly and the two arc extinguishing grid groups are arranged between the first upper partition plate and the first lower partition plate, the first upper partition plate and the first lower partition plate can clamp and fix the rotating contact assembly and the two arc extinguishing grid groups in the thickness direction of the switch unit, an integral arc extinguishing space is formed, the arc extinguishing performance is improved, and arc extinguishing of a higher current can be performed.

[0035] Further, the first upper partition plate and the first lower partition plate are arranged in the switch unit, the rotating contact assembly and the two arc extinguishing grid groups are arranged between the first upper partition plate and the first lower partition plate, the first upper partition plate and the first lower partition plate can clamp and fix the rotating contact assembly and the two arc extinguishing grid groups in the thickness direction of the switch unit, an integral arc extinguishing space is formed, the arc extinguishing performance is improved, and arc extinguishing of a higher current can be performed. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 And Figure 2 is a structural schematic diagram of an isolating switch embodiment of the utility model;

[0037] Figure 3 And Figure 4 is a structural schematic diagram of an operating device of the utility model;

[0038] Figure 5 And Figure 6 is a plane schematic diagram of an operating device of the utility model;

[0039] Figures 7-10 is a structural schematic diagram of an operating mechanism of the utility model;

[0040] Figure 11 is a structural schematic diagram of an embodiment of a re-closing device provided by the utility model;

[0041] Figure 12 And Figure 13 is a structural schematic diagram of a second release provided by the utility model;

[0042] Figure 14 is a structural schematic view of the first switch unit embodiment of the utility model;

[0043] Figure 15 and Figure 16 is a structural schematic view of the rotating contact assembly of the first switch unit of the utility model;

[0044] Figure 17 is Figure 16 the explosion map of the movable contact of the embodiment;

[0045] Figure 18 is a structural schematic view of the rotating contact assembly of the second switch unit of the utility model including two drive shafts embodiment;

[0046] Figure 19 is a structural schematic view of the rotating contact assembly of the second switch unit of the utility model including one drive shaft embodiment;

[0047] Figure 20 is a structural schematic view of the second switch unit of the utility model including one drive shaft embodiment;

[0048] Figure 21 is a structural schematic view of the second switch unit of the utility model including two drive shafts embodiment;

[0049] Figure 22 is a structural schematic view of the second fixed contact of the first switch unit of the utility model;

[0050] The reference signs in the drawings include: a switch unit 100; an operating mechanism 104; an operating device 105; a rotating contact assembly 1; a second stationary contact 2; an arc extinguishing grid piece group 3; a movable contact 11; a first tripper 910; a second tripper 920; a first switch unit 101; a second switch unit 102; a re-closing part 670; a locking part 660; a tripping part 610; a wiring mechanism 930; a first tripping rod 924; a first matching part 672; a coil assembly 921; a top rod 922; a tripper spring 923; a tripping rod 924; a tripping rod driving part 925; a reset button 926; a second matching part 673; a device shell 106; a support 200; a rocker arm 500; a front connecting rod 620; a rear connecting rod 630; a main spring 700; a front connecting shaft 692; a rear connecting shaft 693; a tripping shaft 691; a locking shaft 696; a re-closing shaft 697; a rocker arm shaft 695; an operating shaft 300; a linkage structure 400; a driving part 640; a connecting shaft 694; a linkage crank 410; a linkage rod 420; a transmission shaft 650; a tripping spring 800; a tripping part 610; a shell seat main body 114; a shell seat side cover 115; a re-closing main body 671; a second matching part 673; a re-closing part 674; a first contact part 21; a first connecting part 22; a first wiring part 23; a first lapping part 212; a first extending part 213; a limiting groove 24; a support cover 12; a support seat 13; a first contact 111; a second contact 112; a movable contact accommodating groove 14; a second through hole 71; a driving shaft 7; an arc-shaped part 113; a fixed shaft 142; a driving boss 125; a hot melt column 131; a hot melt hole 132; a main plug 121; a contact support 141; an elastic part 144; a rotating disc 103; a groove 1211; an arc-shaped support column 15; an arc-shaped hole 161; a support boss 171; an arc-shaped protruding part 16; a first upper partition 51; a first lower partition 52; a first leaning table 53; a second leaning table 54; an arc-shaped boss 531; a contact assembly accommodating groove 55; a first through hole 56; an insulating side plate 31; an arc extinguishing grid piece 32; a mounting hole 61; a mounting support 62. DETAILED DESCRIPTION

[0051] The embodiments given below in conjunction with the drawings further illustrate the specific implementation of the present application. The protection scope of the present application is not limited to the description of the following embodiments.

[0052] As Figures 1-21As shown, the isolating switch comprises the operating device 105 and the switch unit 100 arranged in a stack, the operating device 105 comprises an operating mechanism 104 connected with the switch unit 100 for driving the switch unit 100 to open or close, the switch unit 100 comprises a housing and a rotating contact assembly 1, a first static contact, a second static contact 2 and an arc extinguishing grid group 3 arranged inside the housing, the rotating contact assembly 1 comprises a moving contact 11, the operating mechanism 104 is connected with the rotating contact assembly 1 and can drive the rotating contact assembly 1 to rotate inside the switch unit 100, so as to drive the moving contact 11 to contact or separate from the first static contact and the second static contact 2, thereby completing the circuit conduction or disconnection, and the device is exquisite and easy to operate.

[0053] The operating device 105 further comprises a tripping device connected with the operating mechanism 104 and the control system respectively, the control system is connected with the circuit network corresponding to the tripping device, when the circuit network fails, the control system drives the tripping device to trip the operating mechanism 104, and the operating mechanism 104 drives the moving contact 11 of the switch unit 100 to separate from the first static contact and the second static contact 2, thereby improving the safety protection performance of the isolating switch.

[0054] As shown in the drawings, Figures 1-14 The utility model provides a kind of isolating switch, including operating device 105 and switch unit 100, the operating device 105 includes at least two tripping devices, at least two tripping devices correspond to different circuit networks, in the at least two tripping devices, one tripping device is first tripping device 910, another tripping device is second tripping device 920.The first tripping device 910 at least is used to drive operating mechanism 104 tripping when the current and / or voltage fault occurs in the circuit network electrically connected with the input end of switch unit 100;That is, the first tripping device 910 corresponds to the circuit network (input circuit network) electrically connected with the input end of switch unit 100, and first tripping device 910 drives operating mechanism 104 tripping at least when voltage and / or current fault occurs in input circuit network.The second tripping device 920 at least is used to drive operating mechanism 104 tripping when the current and / or voltage fault occurs in the circuit network electrically connected with the output end of switch electric appliance;That is, the second tripping device 920 corresponds to the circuit network (output circuit network) electrically connected with the output end of switch electric appliance, and second tripping device 920 drives operating mechanism 104 tripping at least when voltage and / or current fault occurs in output circuit network.

[0055] The switch unit 100 comprises at least one first switch unit 101 and a plurality of second switch units 102 arranged in layers, preferably, the thickness of the first switch unit 101 is greater than that of the second switch unit 102, that is, the cross-sectional area of the first moving contact 11, the first fixed contact and the second fixed contact 2 of the first switch unit 101 is greater than that of the second switch unit 102, the first switch unit 101 has higher current carrying capacity and can be used in high current circuits, the current carrying capacity of the second switch unit 102 is relatively poor compared with the first switch unit 101 and can be used in low current circuits, wherein the high current and the low current are relative and do not limit the determined current range.

[0056] In the prior art, a large power grid system is often composed of a plurality of circuit networks, and each circuit network is connected together through one or several switch units 100, when any one of the circuit networks connected with the switch unit 100 has voltage and / or current failure, the switch unit 100 will be tripped and opened, and when troubleshooting, all the circuit networks connected with the switch unit 100 need to be checked, the checking range is large, which greatly increases the difficulty and workload of troubleshooting. Therefore, the operating device 105 of the disconnector provided by the utility model has at least two tripping devices, and the at least two tripping devices can correspond to different circuit networks respectively, so that after a certain tripping device drives the operating mechanism 104 to trip, the circuit network with failure can be locked according to the corresponding relationship between the tripping device and the circuit network, thereby reducing the search range of the failure and being beneficial to improving the troubleshooting efficiency and reducing the troubleshooting difficulty. The switch unit 100 comprises at least one first switch unit 101 and a plurality of second switch units 102 arranged in layers, the thickness of the first switch unit 101 is greater than that of the second switch unit 102, that is, the cross-sectional area of the first moving contact 11, the first fixed contact and the second fixed contact 2 of the first switch unit 101 is greater than that of the second switch unit 102, the first switch unit 101 has greater current carrying capacity compared with the second switch unit 102, can be used in high current circuits, and prevents high current from causing the moving contact and the fixed contact to overheat and fail.

[0057] Further, in the operating device 105, each tripping device is connected with an upper control system (such as an upper computer or an intelligent controller / intelligent control chip integrated in the switch unit 100), the control system is connected with the circuit network corresponding to each tripping device and is used for monitoring the running state of each circuit network, when a certain circuit network has current and / or voltage failure, the control system outputs a tripping signal to the corresponding tripping device to drive the operating mechanism 104 to trip.

[0058] Specifically, "current fault" can be overload current fault, short circuit current fault, etc., while "voltage fault" can be overvoltage fault, undervoltage fault, etc.

[0059] Furthermore, the second trip unit 920 is a conditional trip unit. The reset operation of the conditional trip unit is independent of the re-tightening operation of the operating mechanism 104. The conditional trip unit is driven to reset by an external force (for example, the external force is the force from the operator or the mechanical force other than the switch of this utility model, or the external force comes from the mechanical force installed in the switch of this utility model). Only after the conditional trip unit is reset from the trip unit action state to the trip unit reset state is the operating mechanism 104 allowed to re-tighten. That is, after the conditional trip unit drives the operating mechanism 104 to trip, the operating mechanism 104 can only re-tighten after the conditional trip unit is reset from the trip unit action state to the trip unit reset state under the drive of an external force (i.e., after the reset operation of the conditional trip unit is completed). Thus, the operating mechanism 104 can perform normal closing and opening operations. The trip unit action state of the conditional trip unit plays a warning and restriction role, avoiding closing the switch of this utility model before the fault is cleared, which could cause safety hazards.

[0060] Furthermore, among the at least two trip units, all trip units other than the conditional trip unit are general trip units. When the operating mechanism 104 trips again from the tripped state, the reset structure of the switching unit 100 (e.g., the rocker arm of the operating mechanism 104) drives the general trip unit to reset from the trip unit operating state to the trip unit reset state. That is, after any of the general trip units trips the operating mechanism 104, when the operating mechanism 104 trips again (i.e., during the re-tripping operation of the operating mechanism 104), the reset structure of the switching unit 100 drives the general trip unit to reset from the operating state to the trip unit reset state, without the need for separate reset of the general trip units. Of course, as another degraded embodiment, all trip units can also be general trip units.

[0061] Specifically, such as Figures 3-13 As shown, the operating mechanism 104 also includes a rotatably mounted re-fastening member 670, which has a first limiting engagement with the locking member 660. In normal operation (operating mechanism 104 in open state, operating mechanism 104 in closed state, operating mechanism 104 performing manual closing operation, and operating mechanism 104 performing manual opening operation), the re-fastening member 670 and the locking member 660 maintain the first limiting engagement, ensuring that the locking member 660 and the tripping member 610 are engaged. In the closed state, after each trip unit receives a corresponding tripping signal, it drives the re-fastening member 670 to rotate and release the first limiting engagement from the locking member 660, thereby releasing the tripping member 610 from the locking member 660.

[0062] Further, the condition tripping device receives the corresponding tripping signal, drives the relocking member 670 to rotate to release the first limiting cooperation with the locking member 660 and keep the relocking member 670 in the tripped position of the relocking member 670, and then releases the snap cooperation between the jump member 610 and the locking member 660, so that the operating mechanism 104 is switched from the closed state of the operating mechanism 104 to the tripped state of the operating mechanism 104; in the tripped state of the condition tripping device, the relocking member 670 is kept in the tripped position of the relocking member 670 by the condition tripping device, so that the jump member 610 and the locking member 660 cannot restore and keep the snap cooperation, and the operating mechanism 104 cannot be relocked; after the condition tripping device is reset, the condition tripping device releases the limiting of the relocking member 670, so that the relocking member 670 is reset to establish the first limiting cooperation with the locking member 660, and then the jump member 610 and the locking member 660 can restore and keep the snap cooperation.

[0063] Further, as shown in Figures 3-11 each of the tripping devices is a direct-acting tripping device and includes an electromagnetic coil; the operating device 105 of the embodiment further includes a wiring mechanism 930 for connecting the electromagnetic coils of the tripping devices and an external circuit (for example, a control system); the wiring mechanism 930 improves the wiring convenience of the tripping devices. Further, the wiring mechanism 930 is a plug-in type wiring component.

[0064] Specifically, the first tripping device 910 can be realized by the prior art, for example: the first tripping device 910 includes a first coil assembly (including an electromagnetic coil), a first top rod, a first tripping device spring, and a first tripping rod 924, the first tripping rod 924 is in transmission cooperation with the first cooperation part 672 of the relocking member 670; after the first tripping device 910 receives the corresponding tripping signal, the first tripping rod 924 drives the relocking member 670 to rotate to release the first limiting cooperation with the locking member 660, so as to release the snap cooperation between the jump member 610 and the locking member 660.

[0065] Specifically, as shown in Figures 12-13The diagram illustrates one embodiment of the second trip unit 920: The second trip unit 920 of this embodiment includes a coil assembly 921 (which includes an electromagnetic coil), a push rod 922, a trip unit spring 923, and a trip lever 924; one end of the push rod 922 is movably inserted into the coil assembly 921, and the other end is fixedly connected to the trip lever 924; the trip unit spring 923 acts on both the coil assembly 921 and the push rod 922; the trip lever 924 includes a trip lever drive portion 925 that engages with the re-clamping member 670, and a reset button 926 disposed on the trip lever drive portion 925. After receiving the corresponding trip signal, the second trip unit 920 drives the push rod 922 to push out. The trip rod 924 moves synchronously with the push rod 922, causing the trip rod driving part 925 to press against the re-fastening member 670 (specifically the second mating part 673 of the re-fastening member 670) and drive it to rotate so that the re-fastening member 670 and the locking member 660 are released from the first limiting engagement, thereby releasing the latching engagement of the jump fastener 610 and the locking member 660. At the same time, one end of the reset button 926 protrudes outside the device housing 106. When the reset button 926 is pressed by external force, it drives the second trip unit 920 to reset.

[0066] like Figures 3-11 As shown, the length direction, width direction and height direction of the operating mechanism 104 are direction d1, direction d2 and direction d3 respectively, and direction d1, direction d2 and direction d3 are perpendicular to each other.

[0067] like Figures 4-11As shown, the operating mechanism 104 further comprises a bracket 200, a rocker arm 500, a front connecting rod 620, a rear connecting rod 630 and a main spring 700, the rocker arm 500, the jump-off piece 610, the lock piece 660 and the re-engaging piece 670 are rotationally arranged on the bracket 200 and the rotation axes thereof are parallel to the direction d3, the jump-off piece 610, the lock piece 660 and the re-engaging piece 670 are sequentially arranged along the direction d2, the first tripping device 910 is arranged side by side with the operating mechanism 104 along the direction d3, the first tripping device 910 and the re-engaging piece 670 are sequentially arranged along the direction d3, the second tripping device 920 is arranged side by side with the operating mechanism 104 along the direction d1, the second tripping device 920 and the re-engaging piece 670 are sequentially arranged along the direction d1, the first tripping device 910 is located on the same side of the re-engaging piece 670 and the second tripping device 920 along the direction d3; in the projection of the operating device 105 perpendicular to the direction d3, the second tripping device 920 is located on the same side of the operating mechanism 104 and the first tripping device 910; one end (jump-off piece pivot end) of the jump-off piece 610 is rotationally arranged on the bracket 200 and the other end (jump-off piece buckle end) is buckled with the lock piece 660, one end of the front connecting rod 620 is rotationally connected with the middle part of the jump-off piece 610 (part of the jump-off piece 610 located between the jump-off piece pivot end and the jump-off piece buckle end) through a front connecting shaft 692 and the other end is rotationally connected with one end of the rear connecting rod 630 through a rear connecting shaft 693, the rear connecting rod 630 is used for being rotationally connected with the rotating contact assembly 1 of the switch electric appliance, and the two ends of the main spring 700 are respectively connected to the rear connecting shaft 693 and the rocker arm 500. The operating mechanism 104 is a four-linkage-five-linkage conversion operating mechanism, and the action process and working principle thereof are the same as those of the prior art, which will not be expanded here.

[0068] Specifically, the jump-off piece 610 is rotationally arranged on the bracket 200 through a jump-off shaft 691, the lock piece 660 is rotationally arranged on the bracket 200 through a lock shaft 696, the re-engaging piece 670 is rotationally arranged on the bracket 200 through a re-engaging shaft 697, and the rocker arm 500 is rotationally arranged on the bracket 200 through a rocker arm shaft 695.

[0069] Further, as shown in the figure, Figures 4-11 The operating mechanism 104 further comprises an operating shaft 300 for external force operation, a linkage structure 400 and a driving piece 640, the operating shaft 300 and the driving piece 640 are rotationally arranged and the rotation axes thereof are parallel to the direction d3,

[0070] The operation shaft 300 is connected to the rocker arm 500 through the linkage structure 400 to drive the rocker arm 500 to rotate, so that the operation mechanism 104 performs the closing operation, the opening operation and the reclosing operation. The rear connecting rod 630 is rotatably connected to the front connecting rod 620 at one end through the rear connecting shaft 693 and rotatably connected to the driving member 640 at the other end through the connecting shaft 694. The driving member 640 is coaxially arranged with the rotating contact assembly 1 of the switch electric appliance and connected to the rotating contact assembly 1 in transmission.

[0071] Specifically, the operation shaft 300 and the driving member 640 are coaxially arranged. The operation shaft 300 is rotatably arranged on the support 200, and the driving member 640 is sleeved on the operation shaft 300 (specifically, the driving member 640 is provided with a driving member shaft hole through which the operation shaft 300 passes). The linkage structure 400 includes a linkage crank 410 and a linkage rod 420 which are rotatably arranged on the operation shaft 300 and synchronously rotate with the operation shaft 300. One end of the linkage rod 420 is rotatably connected to the linkage crank 410, and the other end is rotatably connected to the rocker arm 500. The operation shaft 300 is preferably connected to the two rocker arm legs of the rocker arm 500 in transmission through two groups of linkage structures 400.

[0072] Further, the operation shaft 300, the rocker arm 500, the linkage structure 400, the front connecting rod 620, the rear connecting rod 630, the main spring 700 and the driving member 640 of the operation mechanism 104 are rotatably arranged on the support 200 and have rotation axes which are parallel to the direction d3. The operation shaft 300 is connected to the rocker arm 500 in transmission through the linkage structure 400. One end of the jump buckle member 610 is rotatably arranged on the support 200 through the jump buckle shaft 691, and the other end is snap-fitted with the lock buckle member 660. The two ends of the front connecting rod 620 are rotatably connected to the middle part of the jump buckle member 610 and one end of the rear connecting rod 630 through the front connecting shaft 692 and the rear connecting shaft 693, respectively. The other end of the rear connecting rod 630 is rotatably connected to the driving member 640. The two ends of the main spring 700 are connected to the rear connecting shaft 693 and the rocker arm 500, respectively. The rocker arm 500 and the driving member 640 are located at the two ends of the operation mechanism 104 in the direction d1, respectively. The jump buckle shaft 691 and the reclosing member 670 are located at the two ends of the operation mechanism 104 in the direction d2, respectively.

[0073] Further, as shown in Figures 4-11 The operation mechanism 104 further includes a transmission shaft 650 which is connected to the driving member 640 and synchronously rotates with the driving member 640. The transmission shaft 650 is circumferentially arranged around the rotation axis of the driving member 640. One end of the driving member 640 is rotatably connected to the rear connecting rod 630 through the connecting shaft 694, and the other end is fixedly connected to the transmission shaft 650. One end of the transmission shaft 650 is connected to the rotating contact assembly 1 of the switch electric appliance in transmission.

[0074] As other embodiments of the transmission connection between the driving member 640 and the rotating contact assembly 1, one axial end of the driving member 640 is in transmission connection with the rotating contact assembly 1.

[0075] Further, as shown in Figures 5-10 The operating mechanism 104 further comprises a tripping spring 800 acting on the tripping member 610 to accelerate the rotation of the tripping member 610 when the operating mechanism 104 is tripped, thereby improving the tripping efficiency of the operating mechanism 104.

[0076] Further, the first tripping device 910 and the second tripping device 920 are located in the space surrounded by the housing body 114 and the housing side cover 115, facilitating the replacement, maintenance and disassembly of the tripping devices, and realizing the modular assembly of the tripping devices and the operating mechanism.

[0077] As shown in Figures 4-10 , Figure 11 The middle part of the reclosing member 670 is rotatably arranged (specifically, the middle part of the reclosing member 670 is rotatably arranged on the bracket 200 of the operating mechanism 104), and the two ends are respectively in transmission cooperation with the first tripping device 910 and the second tripping device 920. Further, the reclosing member 670 comprises a reclosing body 671, a first cooperation part 672 in transmission cooperation with the first tripping device 910, a second cooperation part 673 in transmission cooperation with the second tripping device 920, and a reclosing part 674 in limiting cooperation with the locking member 660; one end of the reclosing body 671 is rotatably arranged on the bracket 200 of the operating mechanism 104 through a reclosing shaft 697, and the end of the reclosing body 671 is respectively connected with the second cooperation part 673 and the reclosing part 674, and the other end of the reclosing body 671 is provided with the first cooperation part 672, and the first cooperation part 672 and the second cooperation part 673 are located at the two ends of the reclosing member 670 in the overall structure of the reclosing member 670. Further, the second cooperation part 673, the reclosing part 674 and the reclosing body 671 are sequentially arranged along the rotation direction of the reclosing member 670 (i.e. the circumferential direction of the reclosing shaft 697); the second cooperation part 673, the reclosing part 674 and the reclosing body 671 are sequentially arranged along the direction d1; the first cooperation part 672 is arranged on one side of the reclosing body 671 in the rotation axial direction of the reclosing member 670 (i.e. the axial direction of the reclosing shaft 697); the first cooperation part 672 is located on the same side of the second cooperation part 673, the reclosing part 674 and the reclosing body 671 in the direction d1. Among them, Figure 11 is an embodiment of the reclosing member 670 provided by the present application.

[0078] It should be pointed out that the reclosing member 670 is not limited to the above implementation manner, and those skilled in the art can adjust the specific structure of the reclosing member 670 according to the positional relationship and transmission structure among the reclosing member 670, the first tripping device 910 and the second tripping device 920 using conventional technical means in the art.

[0079] Further, as shown in Figure 3 , Figure 4 , the operating device 105 of the embodiment further comprises a device shell 106, and the operating mechanism 104 and each tripping device are arranged in the device shell 106.

[0080] As shown in Figures 3-9 , the operating device 105 of the embodiment is provided with two tripping devices, one of which is a first tripping device 910, and the other is a second tripping device 920.

[0081] Specifically, the switch device of the utility model preferably applies to a photovoltaic power generation system, the input end thereof is electrically connected with the circuit network of a photovoltaic power generation panel, and the output end thereof is connected with the circuit network of a power distribution cabinet; the first tripping device 910 corresponds to the circuit network of the photovoltaic power generation panel, and the second tripping device 920 corresponds to the circuit network of the power distribution cabinet; when the circuit network of the photovoltaic power generation panel has a current and / or voltage fault, the first tripping device 910 drives the operating mechanism 104 to trip; when the circuit network of the power distribution cabinet has a current and / or voltage fault, the second tripping device 920 drives the operating mechanism 104 to trip. Further, the power distribution cabinet is provided with at least one electrical equipment, for example, an inverter.

[0082] As other embodiments, the switch device of the utility model can also be applied between a power supply circuit network and a load circuit network, the power supply circuit network is electrically connected with the input end of the switch device, and the load circuit network is electrically connected with the output end of the switch device; the first tripping device 910 corresponds to the power supply circuit network, and when the power supply circuit network has a current and / or voltage fault, the first tripping device 910 drives the operating mechanism 104 to trip; the second tripping device 920 corresponds to the load circuit network, and when the load circuit network has a current and / or voltage fault, the second tripping device 920 drives the operating mechanism 104 to trip.

[0083] Further, as shown in Figures 3-9 , the first tripping device 910 is a general tripping device, and the second tripping device 920 is a conditional tripping device.

[0084] Specifically, after the first tripping device 910 drives the operating mechanism 104 to trip, the rocker arm 500 of the operating mechanism 104 drives the first tripping device 910 to reset from the tripping device action state to the tripping device reset state during the reclosing process of the operating mechanism 104. After the second tripping device 920 (the conditional tripping device) drives the operating mechanism 104 to trip, the second tripping device 920 is limited to cooperate with the reclosing part 670 to keep it at the reclosing position of the reclosing part 670, so that the reclosing part 670 cannot be reset and establishes the first limiting cooperation with the locking part 660, the catch part 610 and the locking part 660 cannot be restored and kept in the latching cooperation, and the operating mechanism 104 cannot be reclosed successfully, that is, the switch device cannot be closed.

[0085] Further, as shown in Figures 3-7 the second tripping device 920 (conditional tripping device) includes a tripping lever 924 for driving the operating mechanism 104 to trip, the tripping lever 924 includes a reset button 926; in the tripping device action state, one end of the reset button 926 protrudes outside the device shell 106, and the tripping lever 924 is limited to cooperate with the re-coupling member 670 to keep it in the tripping position of the re-coupling member 670.

[0086] Specifically, as shown in Figures 14-21 the switch unit 100 includes a first static contact and a second static contact 2, the first static contact and the second static contact 2 and the two sets of arc extinguishing grid pieces 3 are cross arranged, the first static contact and / or the second static contact 2 of the first switch unit 101 includes an integrally formed first contact part 21, a first connecting part 22 and at least two first wiring parts 23 connected in sequence, the first contact part 21 extends to the inside of the shell and cooperates with the moving contact 11 of the rotating contact assembly 1, at least two first wiring parts 23 extend to the outside of the shell and are used for external electrical connection, which can be connected with external wires or welded with PCB boards, the first wiring part 23 and the external wire can be fixedly connected through welding, riveting or other methods, or the first wiring part 23 is provided with a screw and a nut, and the first wiring part 23 can be fixedly connected with the external wire through the screw and the nut. The connection of at least two first wiring parts 23 with the external wire can increase the contact area of the first static contact and / or the second static contact 2 with the external wire, enhance the current-carrying capacity of the first static contact and / or the second static contact 2, and avoid the safety hazard caused by overheating of the first static contact and / or the second static contact 2.

[0087] Further, as shown in Figure 22 in the embodiment, the second static contact 2 includes two parallel first wiring parts 23, the two first wiring parts 23 are perpendicular to the first connecting part 22, one end of the first wiring part 23 is connected with the first contact part 21, the first contact part 21 includes a first lap joint part 212 and a first extension part 213, the first lap joint part 212 is connected with the moving contact 11, and the first extension part 213 increases the cross-sectional area of the second static contact 2, can increase the current-carrying capacity of the second static contact 2, and improve the current-carrying capacity of the switch unit 100, the first extension part 213 is rectangular, the length of the first extension part 213 is greater than or equal to the distance between the two first wiring parts 23, and an included angle is formed between the first extension part 213 and the first connecting part 22, the included angle is recessed to the direction of the first connecting part 22 to form a limiting recess 24, and the limiting recess 24 is used for limiting one end of the set of arc extinguishing grid pieces 3. In the embodiment, the first static contact includes one first wiring part 23.

[0088] Preferably, the thickness of the first fixed contact and the second fixed contact 2 of the first switch unit 101 is greater than the thickness of the first fixed contact and the second fixed contact 2 of the second switch unit 102, and the second fixed contact 2 of the second switch unit 102 comprises one first wiring part 23 and is not provided with a first extension part 213, and the first fixed contact and the second fixed contact 2 of the first switch unit 101 have greater current-carrying capacity.

[0089] Preferably, the rotating contact assembly 1 of the switch unit 100 comprises a support cover 12, a movable contact 11 and a support base 13 which are sequentially stacked, and the support base 13 and the support cover 12 clamp the movable contact 11; the movable contact 11 comprises a first contact 111 and a second contact 112 which are oppositely arranged, and the two ends of the first contact 111 and the second contact 112 have clamping gaps for accommodating the first fixed contact and the second fixed contact 2, and the movable contact 11 is connected with or disconnected from the first fixed contact and the second fixed contact 2 through the clamping gaps; a movable contact accommodating groove 14 is arranged between the support base 13 and the support cover 12, and a limiting structure is arranged in the movable contact accommodating groove 14, and the movable contact 11 is limited in the movable contact accommodating groove 14.

[0090] Preferably, the disconnecting switch comprises a plurality of second switch units 102, and the support base 13 and the support cover 12 of the second switch unit 102 are provided with a second through hole 71, and at least one driving shaft 7 passes through the second through hole 71 and simultaneously links with the rotating contact assemblies 1 of the plurality of second switch units 102, and the driving shaft 7 is directly or indirectly connected with the operating mechanism 104. By arranging the second through hole 71 on the support base 13 and the support cover 12 of the plurality of second switch units 102 and passing at least one driving shaft 7 through the second through hole 71, the consistency of the opening and closing of the plurality of second switch units 102 can be improved.

[0091] Each of the second switch units 102 comprises a shell, the support base 13 and the support cover 12 of the second switch unit 102 are provided with a second through hole 71, and at least one driving shaft 7 passes through the second through hole 71 on the support base 13 and the support cover 12 of the plurality of second switch units 102 and simultaneously links with the rotating contact assemblies 1 of the plurality of second switch units 102. By arranging the second through hole 71 on the support base 13 and the support cover 12 and passing at least one driving shaft 7 through the second through hole 71 on the support base 13 and the support cover 12 of the plurality of second switch units 102, the consistency of the opening and closing of the plurality of second switch units 102 can be improved.

[0092] Specifically, as shown in FIG. 1, the disconnecting switch comprises a first switch unit 101 and a second switch unit 102 which are arranged in parallel, and the first switch unit 101 and the second switch unit 102 are connected with each other through a first fixed contact and a second fixed contact 2. Figure 19 and Figure 20As shown, in one embodiment, a drive shaft 7 penetrates the plurality of second switch units 102 and is in driving connection with the plurality of second switch units 102, and a second through hole 71 with the same cross-sectional shape as the drive shaft 7 is formed on the movable contact 11, the support seat 13 and the support cover 12 of the rotating contact assembly 1. The drive shaft 7 penetrates the rotating contact assembly 1 and also penetrates the movable contact 11, which greatly increases the consistency of the plurality of second switch units 102 in opening and closing.

[0093] Further, the drive shaft 7 is in concave-convex cooperation with the second through hole 71 and is limited in the rotation direction of the drive shaft 7. For example, as shown in Figure 19 As shown, the second through hole 71 is in the shape of a plum blossom, and the cross section of the drive shaft 7 is also in the same shape as the second through hole 71. The drive shaft 7 is in concave-convex cooperation with the second through hole 71, and the driving effect is better.

[0094] Further, as shown in Figure 19 As shown, the middle part of the movable contact 11 extends to both sides in the width direction to form two arc-shaped parts 113, which can increase the area of the middle part of the movable contact 11. Since the middle part of the movable contact 11 is penetrated by the drive shaft 7 to form the second through hole 71, the arc-shaped parts 113 arranged on both sides of the movable contact 11 can increase the structural strength of the movable contact 11 and enhance the service life.

[0095] Further, in one embodiment provided by the present application, two fixed shafts 142 are arranged on the movable contact 11 and are arranged on both sides of the second through hole 71.

[0096] Further, the drive shaft 7 has at least two recessed areas, and two driving bosses 125 are arranged on the upper part of the support cover 12 of the rotating contact assembly 1. The two driving bosses 125 on the support cover 12 are arranged in the two recessed areas and abut against the drive shaft 7. The two driving bosses 125 on the upper part of the support cover 12 cooperate with the drive shaft 7, which can increase the stability of the rotating contact assembly 1 during the driving rotation of the drive shaft 7.

[0097] Preferably, as shown in Figure 18 and Figure 21 As shown in another embodiment, two parallel drive shafts 7 are arranged at intervals in the middle part of the plurality of second switch units 102, two second through holes 71 are arranged on the support seat 13 and the support cover 12 correspondingly, the two drive shafts 7 pass through the two second through holes 71 respectively, and the movable contact 11 is arranged between the two drive shafts 7. The arrangement of the two drive shafts 7 can make the rotating contact assembly 1 rotate more stably.

[0098] Further, in an embodiment provided by the application, the middle part of the movable contact 11 is recessed towards the center region of the movable contact 11 in the width direction, forming an avoiding region for avoiding the two driving shafts 7, the two driving shafts 7 passing through the support base 13 and the support cover 12 extend into the avoiding region of the movable contact 11 and abut against the middle part of the movable contact 11, thereby driving the movable contact 11 to rotate.

[0099] Further, the movable contact 11 provided by the embodiment comprises two fixed shafts 142 distributed along the length direction of the movable contact 11.

[0100] Preferably, the driving shaft 7 of the second switch unit 102 adjacent to the first switch unit 101 or the operating mechanism 104 can partially extend out of the shell, serving as a part of the linkage mechanism and being directly or indirectly connected with the operating mechanism 104. Specifically, the operating mechanism 104 is connected with the driving shaft 7 through a rotating disc 103, the operating mechanism 104 drives the rotating disc 103 to further drive the driving shaft 7 to rotate, and the driving shaft 7 drives the plurality of rotating contact assemblies 1 to rotate, thereby completing the opening and closing of the plurality of second switch units 102 and improving the consistency of the opening and closing of the plurality of second switch units 102.

[0101] Further, the driving shaft 7 of the second switch unit 102 farthest from the operating mechanism 104 can only pass through the rotating contact assembly 1 of the second switch unit 102 without penetrating the bottom of the shell.

[0102] Specifically, in the embodiment provided by the application, the movable contact 11 partially extends out of the support base 13 and the support cover 12 to overlap with the first stationary contact and the second stationary contact 2.

[0103] Preferably, as shown in Figure 16 the support base 13 and the support cover 12 are installed and fixed through the hot melt columns 131 and the hot melt holes 132 or the hot melt columns 131 and the hot melt grooves.

[0104] Further, the support base 13 is provided with two hot melt columns 131 arranged at intervals, the support cover 12 is provided with two hot melt holes 132 arranged at positions corresponding to the hot melt columns 131 of the support base 13, and the support base 13 and the support cover 12 are fixed and installed in a laminated manner along the thickness direction of the movable contact 11, the two hot melt columns 131 are located on both sides of the movable contact 11 after the movable contact 11 is installed between the support base 13 and the support cover 12, and are symmetric to the rotation axis of the movable contact 11.

[0105] The hot-melt column 131 and the hot-melt hole 132 are integrated by a hot-melt process, which can reduce air leakage and increase creepage distance. When the support base 13 and the support cover 12 are installed and fixed, the cooperation of the hot-melt column 131 and the hot-melt hole 132 enhances the space sealing performance of the middle part of the support base 13 and the support cover 12, so that the gas generated by the arc burning the support base 13 and the support cover 12 moves to both ends of the moving contact 11, thereby pushing the arc to move to the arc-extinguishing chamber and accelerating arc extinction. Of course, as other embodiments, the support base 13 and the support cover 12 can also be fixed by screws or other ways, but the sealing performance is poorer than that of the hot-melt column 131 and the hot-melt hole 132.

[0106] The hot-melt process has the advantages of simple structure, no need for additional fastening components, good sealing performance after fixation, no vibration, no pollution, no noise, environmental protection, energy saving, rapidness, and high efficiency in the processing process.

[0107] Further, as shown in Figure 16 The linkage mechanism for driving the rotating contact assembly 1 to rotate includes a main plug 121 arranged on the upper part of the support cover 12; or, in other embodiments, the upper part of the support cover 12 is not provided with the main plug 121, the moving contact 11 includes at least one fixed shaft 142, the at least one fixed shaft 142 is fixed in the middle part of the first contact 111 and the second contact 112, so that the first contact 111 and the second contact 112 are fixed as a whole, and the clamping gap is formed at both ends of the moving contact 11; or, in other embodiments, the upper part of the support cover 12 includes the main plug 121, and the moving contact 11 is further provided with at least one fixed shaft 142.

[0108] Preferably, the moving contact 11 further includes a contact support 141 and at least one fixed shaft 142, two recesses are arranged on the opposite surfaces of the contact support 141, the two recesses are through structures along the length direction of the moving contact 11, the middle parts of the first contact 111 and the second contact 112 are respectively arranged in the two recesses, and the at least one fixed shaft 142 penetrates the middle parts of the first contact 111, the second contact 112, and the contact support 141, so that the first contact 111, the second contact 112, and the contact support 141 are fixed as a whole. The moving contact accommodating groove 14 is provided with a limiting structure matched with the contact support 141, and the contact support 141 is arranged in the moving contact accommodating groove 14.

[0109] In the embodiment of the present application, the contact support 141 is arranged in the middle of the moving contact 11, the two opposite surfaces of the contact support 141 are provided with grooves, the grooves are through structures along the length direction of the moving contact 11, the middle parts of the first contact 111 and the second contact 112 of the moving contact 11 are arranged in the two grooves respectively, the clamping gaps at the two ends of the moving contact 11 are arranged outside the grooves and are inserted and matched with the first stationary contact and the second stationary contact 2, the contact support 141 plays a good wrapping effect on the moving contact 11, and the structural strength of the moving contact 11 is enhanced, the support seat 13 and the support cover 12 are limited matched with the contact support 141, and the three are all insulating materials to form an integral whole, compared with the prior art, the moving contact 11 of the present application has better stability and higher structural strength.

[0110] Further, as shown in Figure 17 The moving contact 11 further comprises at least one elastic member 144, the at least one elastic member 144 is arranged on the opposite surfaces of the first contact 111 and / or the second contact 112, the elastic member 144 arranged on the moving contact 11 can provide clamping force for the clamping gaps at the two ends of the moving contact 11, improve the clamping effect between the moving contact 11 and the first stationary contact and the second stationary contact 2, and effectively improve the current carrying capacity and temperature rise performance of the disconnecting switch. In the preferred embodiment of the present application, the at least one fixing shaft 142 penetrates through the first contact 111, the second contact 112, the contact support 141 and the at least one elastic member 144, so that the first contact 111, the second contact 112, the contact support 141 and the at least one elastic member 144 are fixed as an integral whole; or the at least one fixing shaft 142 is fixed in the middle part of the first contact 111, the second contact 112 and the at least one elastic member 144, so that the first contact 111, the second contact 112 and the at least one elastic member 144 are fixed as an integral whole.

[0111] Further, in the preferred embodiment provided in the present application, the moving contact 11 is provided with one elastic member 144 on each of the two opposite surfaces, the middle part of the moving contact 11 is provided with one fixing shaft 142, the fixing shaft 142 penetrates through the first contact 111, the second contact 112, the two elastic members 144 and the middle part of the contact support 141, so that the first contact 111, the second contact 112, the two elastic members 144 and the contact support 141 are fixed as an integral whole, and are arranged in the moving contact containing groove 14 between the support seat 13 and the support cover 12 and are clamped and fixed by the support seat 13 and the support cover 12.

[0112] Specifically, in the embodiment, the movable contact 11 of the first switch unit 101 comprises the contact support 141. When the thickness of the first switch unit 101 is increased, the space between the support cover 12 and the support base 13 is also increased, which may cause the movable contact 11 to be unstable. In this case, the contact support 141 can improve the stability of the movable contact 11 in the first switch unit 101 to a certain extent.

[0113] Further, when the current-carrying capacity of the first switch unit 101 is improved, the arc generated by the opening and closing of the first switch unit 101 is also enhanced. In order to extinguish the stronger arc, the thickness of the arc extinguishing grid group 3 of the first switch unit 101 is greater than that of the arc extinguishing grid group 3 of the second switch unit 102.

[0114] Preferably, the disconnecting switch comprises a plurality of first switch units 101 arranged in layers, and the linkage mechanism of the first switch unit 101 arranged on the operation surface protrudes from the shell. The operation mechanism 104 comprises a rotating disc 103 connected with the linkage mechanism. The operation mechanism 104 drives the linkage mechanism to rotate the plurality of rotating contact assemblies 1 by driving the rotating disc 103.

[0115] Preferably, the drive shaft 7 of the second switch unit 102 arranged on the operation surface protrudes from the shell. The operation mechanism 104 comprises a rotating disc 103 connected with the protruding end of the drive shaft 7. The operation mechanism 104 drives the drive shaft 7 to rotate by driving the rotating disc 103, and the drive shaft 7 drives the plurality of rotating contact assemblies 1 to rotate.

[0116] In one embodiment, the disconnecting switch comprises a plurality of first switch units 101 and a plurality of second switch units 102 arranged in layers, and the adjacent first switch unit 101 and second switch unit 102 are drivingly connected. The operation device 105 is arranged on the operation surface of the first switch unit 101. The rotating disc 103 is connected between the operation mechanism 104 and the first switch unit 101. The operation mechanism 104 drives the rotating contact assembly 1 of the first switch unit 101 to rotate, thereby driving the rotating contact assembly 1 of the second switch unit 102 to rotate.

[0117] Preferably, as shown in Figure 15 and Figure 16 The outer surface of the support cover 12 is provided with a main plug 121 in the middle. The main plug 121 is located above the movable contact receiving groove 14 and corresponds to the position of the movable contact receiving groove 14. The main plug 121 partially protrudes from the upper surface of the support cover 12. The bottom of the support base 13 is provided with a first plug hole, and the protruding part of the main plug 121 can be embedded in the first plug hole, which is used to connect with the support base 13 of the rotating contact assembly 1 of the adjacent disconnecting switch unit 100.

[0118] Further, the main plug 121 is provided with a plurality of grooves 1211 extending along the thickness direction of the moving contact 11, the cross section of the plurality of grooves 1211 forms a fishbone-like structure, the first plug hole is provided with a protruding structure drivingly matched with the grooves 1211 of the main plug 121, the plurality of grooves 1211 provided on the main plug 121 can increase the friction between the main plug 121 and the first plug hole, so that the plurality of rotary contact assemblies 1 stacked along the thickness direction of the moving contact 11 are more firmly installed.

[0119] In a possible implementation manner, the support cover 12 is further provided with a second plug hole at the position of the main plug 121, and the main plug 121 can be inserted into the second plug hole along the thickness direction of the moving contact 11.

[0120] In another possible implementation manner, the support cover 12 is not provided with a second plug hole, and the main plug 121 is integrally formed with the support cover 12.

[0121] When the operating mechanism 104 of the disconnecting switch and the plurality of switch units 100 are stacked, the rotary contact assemblies 1 of adjacent switch units 100 are stacked and inserted along the thickness direction of the moving contact 11 to form an integral whole, the linkage mechanism of the operating mechanism 104 is connected with the rotary contact assemblies 1, linkage operation of the plurality of rotary contact assemblies 1 is realized, the plurality of switch units 100 are stacked and spliced, installation is convenient, and when an individual switch unit 100 is damaged, the switch unit 100 is convenient to replace.

[0122] When a plurality of rotary contact assemblies 1 are applied, the plurality of rotary contact assemblies 1 can be matched through the protruding part of the main plug 121 on the support cover 12 of one rotary contact assembly 1 and the first plug hole at the bottom of the support base 13 of another rotary contact assembly 1.

[0123] The limiting structure includes the side wall of the moving contact accommodating groove 14, and the contact support 141 is arranged in the moving contact accommodating groove 14 and is limitedly matched with the side wall of the moving contact accommodating groove 14. Two arc-shaped support columns 15 are oppositely arranged along the width direction of the moving contact 11, and the support base 13, the support cover 12 and the contact support 141 are installed, and the two arc-shaped support columns 15 are located at the two sides of the contact support 141. The two arc-shaped support columns 15 extend along the thickness direction of the moving contact 11, the arc-shaped support column 15 constitutes part of the side wall of the moving contact accommodating groove 14, the support cover 12 includes an arc-shaped hole 161 or an arc-shaped groove matched with the arc-shaped support column 15, and the arc-shaped support column 15 penetrates into the arc-shaped hole 161 or the arc-shaped groove, so that the support base 13 and the support cover 12 are installed and fixed.

[0124] Specifically, as shown in FIG. 1, the rotary contact assembly 1 includes a support base 13, a support cover 12 and a contact support 141. Figure 2As shown, at least one first switch unit 101 and a plurality of second switch units 102 in the application are arranged in a stack and can be linked to work together through a linkage mechanism, each layer and the first and second static contacts 2 of each layer are arranged in a left-right staggered manner in the thickness direction of the switch unit 100, wherein the linkage mechanism comprises a main plug 121 and / or an arc-shaped support column 15 and a drive shaft 7.

[0125] Preferably, as shown in the drawings, Figure 15 and Figure 16 Preferably, the support base 13 and the support cover 12 are disc-shaped structures with the same diameter, and a plurality of weight-reducing holes are arranged on the support base 13 and the support cover 12 to reduce the weight of the support base 13 and the support cover 12. Preferably, the weight-reducing holes are arranged away from the center of the support base 13 and the support cover 12.

[0126] The support base 13 and the support cover 12 are made of insulating gas-producing materials, and the moving contact 11 and the first and second static contacts 2 generate an arc at the moment of contact or separation. The support base 13 and the support cover 12 generate gas under the high-temperature erosion of the arc, which cools the arc and also propels the arc to move towards the arc-extinguishing chamber, thereby accelerating arc extinction.

[0127] Further, the maximum length of the moving contact 11 in the length direction is less than or equal to the diameter of the support base 13 and the support cover 12, and the edges of the support base 13 and the support cover 12 have two sliding grooves arranged on both sides of the width direction of the moving contact receiving groove 14, respectively. The sliding grooves and the moving contact receiving groove 14 are separated by a separation boss to improve the insulation performance and prevent the arc from eroding the moving contact 11. Only one end of each of the two sliding grooves is connected to the two ends of the moving contact receiving groove 14, so that the first and second static contacts 2 inserted into the sliding grooves can cooperate with the clamping gap at both ends of the moving contact 11. The first and second static contacts 2 are inserted into the two sliding grooves, respectively, and the rotation track of the support base 13 and the support cover 12 is inserted or disconnected with the clamping gap at both ends of the moving contact 11. After the moving contact 11 is installed between the support base 13 and the support cover 12, the two ends of the moving contact 11 will not protrude from the support base 13 and the support cover 12, which can further improve the insulation performance, and the sliding grooves can guide the arc into the arc-extinguishing chamber.

[0128] Of course, in other embodiments, the length of the moving contact 11 can also be longer than the diameter of the support base 13 and the support cover 12, i.e. the two ends of the moving contact 11 can protrude from the support base 13 and the support cover 12 after the moving contact 11 is installed between the support base 13 and the support cover 12. The first and second static contacts 2 are inserted and cooperated with the moving contact 11 outside the support base 13 and the support cover 12, which all belong to the protection scope of the application.

[0129] Preferably, as shown in Figure 16 Preferably, as shown in

[0130] Further, the two support protrusions 171 can be arranged on the support base 13 or on the support cover 12; or the support protrusions 171 are arranged on both the support base 13 and the support cover 12, and the support protrusions 171 on the support base 13 and the support cover 12 are arranged in correspondence in the thickness direction of the moving contact 11. At this time, the support base 13 includes two support protrusions 171, and the support cover 12 includes two support protrusions 171.

[0131] Preferably, as shown in Figure 16 Preferably, as shown in

[0132] Preferably, in a possible embodiment, in order to form the clamping gap at both ends of the moving contact 11, the first contact 111 and the second contact 112 are bent structures, the middle part of one side of the first contact 111 is bent towards the second contact 112, forming a first pressing part in the middle part of the first contact 111, and two first gap parts at both ends, and / or the middle part of one side of the second contact 112 is bent towards the first contact 111, forming a second pressing part, and two second gap parts at both ends of the second contact 112, so that the first pressing part and the second pressing part of the first contact 111 and the second contact 112 abut, and the clamping gap is formed at both ends of the first contact 111 and the second contact 112. Preferably, the first pressing part and the first gap part at both ends are parallel, and the second pressing part and the second gap part at both ends are parallel.

[0133] Alternatively, in another possible embodiment, the first contact 111 and the second contact 112 are both flat plate structures, and at least one boss is arranged between the first contact 111 and the second contact 112, the at least one boss allowing the first contact 111 and the second contact 112 to be arranged in parallel, and forming the clamping gap at both ends of the movable contact 11.

[0134] Preferably, as shown in the drawings, the side edges of the first contact 111 and the second contact 112 at both ends are provided with arc-shaped protrusions 16, the arc-shaped protrusions 16 of the first contact 111 and the arc-shaped protrusions 16 of the second contact 112 are arranged oppositely and the distance between them is greater than the distance of the clamping gap between the first contact 111 and the second contact 112. Figures 17-19

[0135] By arranging the arc-shaped protrusions 16 at the ends of the first contact 111 and the second contact 112, the opening angle thereof can be greater than the distance of the clamping gap between the first contact 111 and the second contact 112, so that the movable contact 11 is more convenient to be plugged with the first fixed contact and the second fixed contact 2.

[0136] Further, the side edges of the first contact 111 and the second contact 112 are both provided with arc-shaped protrusions 16, or, as shown in the embodiment of the present application, one side edge of the first contact 111 and the second contact 112 is provided with arc-shaped protrusions 16. The arc-shaped protrusions 16 comply with the rotating direction of the movable contact 11 and are plugged with the first fixed contact and the second fixed contact 2, and when the movable contact 11 is rotated clockwise or counterclockwise and plugged with the first fixed contact and the second fixed contact 2, the arc-shaped protrusions 16 are arranged on one side of the first contact 111 and the second contact 112. The movable contact 11 can be connected with the first fixed contact and the second fixed contact 2 through clockwise rotation or counterclockwise rotation, and at this time, the arc-shaped protrusions 16 are arranged on both sides of the first contact 111 and the second contact 112, satisfying the condition that the movable contact 11 can be connected with the first fixed contact and the second fixed contact 2 through clockwise rotation or counterclockwise rotation.

[0137] Of course, in some relatively poor embodiments, the arc-shaped protrusions 16 can not be arranged oppositely. They can be arranged only on one side, for example, only on the first contact 111 or the second contact 112, so as to save production cost. As can be seen, the connection relationship between the arc-shaped protrusions 16 and the movable contact 11 can have various embodiments, and all the embodiments that can be thought of by those skilled in the art in combination with the prior art are within the protection scope of the present application. In addition, the arc-shaped protrusions 16 can also be non-arc-shaped structures, as long as they are convenient for plugging with the first fixed contact and the second fixed contact 2 to achieve the same technical effect, and they are within the protection scope of the present application and will not be described here.

[0138] ​Preferably, the support base 13 and the support cover 12 are made of insulating gas generating material. The moving contact 11 generates an arc at the moment of contact or separation with the first and second static contacts 2, and the support base 13 and the support cover 12 generate gas under the high temperature erosion of the arc to cool the arc, and the generated gas also pushes the arc to move towards the arc extinguishing chamber, thereby accelerating the arc extinguishing.

[0139] Preferably, as shown in the drawings, the isolator further comprises a first upper partition plate 51 and a first lower partition plate 52 arranged opposite along the thickness direction of the switch unit 100, and the rotating contact assembly 1 and the two arc extinguishing grid groups 3 are arranged between the first upper partition plate 51 and the first lower partition plate 52. In the preferred embodiment, the first upper partition plate 51 and the first lower partition plate 52 of the first switch unit 101 each comprise a first abutment 53 and a second abutment 54 arranged opposite, and the first abutment 53 and the second abutment 54 respectively abut against the two arc extinguishing grid groups 3 to fix the two arc extinguishing grid groups 3 in the housing. Figure 14

[0140] The first upper partition plate 51 and the first lower partition plate 52 are arranged in the switch unit 100, and the rotating contact assembly 1 and the two arc extinguishing grid groups 3 are arranged between the first upper partition plate 51 and the first lower partition plate 52. The first upper partition plate 51 and the first lower partition plate 52 can clamp and fix the rotating contact assembly 1 and the two arc extinguishing grid groups 3 along the thickness direction of the first switch unit 101 to form an integrated arc extinguishing space, improve the arc extinguishing performance, and enable higher current arc extinguishing.

[0141] Further, the first abutment 53 and the second abutment 54 extend in the direction of the support cover 12 on the side close to the rotation axis, and two arc-shaped bosses 531 are arranged on the first abutment 53 and the second abutment 54, which can be placed with magnetic materials to achieve magnetic blowout arc extinguishing and enhance the arc extinguishing effect. A contact assembly accommodating groove 55 is arranged between the middle part of the first upper partition plate 51 and the first lower partition plate 52 and the two arc-shaped bosses 531, and the rotating contact assembly 1 is arranged in the contact assembly accommodating groove 55. A first through hole 56 is arranged in the middle part of the contact assembly accommodating groove 55, and a linkage mechanism is protrudingly arranged on the upper part of the support cover 12, and the linkage mechanism passes through the first through hole 56.

[0142] The first abutment 53, the second abutment 54, the contact assembly accommodating groove 55, the arc-shaped boss 531 and the magnet arranged on the first upper partition plate 51 and the first lower partition plate 52 greatly improve the arc extinguishing performance.

[0143] ​Further, the first upper partition plate 51 and the first lower partition plate 52 are made of insulating gas generating material. The moving contact 11 and the first and second static contacts 2 generate arc at the moment of contact or separation, and the first upper partition plate 51 and the first lower partition plate 52 generate gas under the high-temperature erosion of the arc, which can cool the arc and push the arc to move towards the arc extinguishing chamber, thereby accelerating the arc extinguishing.

[0144] Preferably, the two arc extinguishing grid groups 3 are arc-shaped, and can form a closed circle after being connected with the first and second static contacts 2. The rotating contact assembly 1 is arranged at the center of the circle. Because the rotating contact assembly 1 is arranged to rotate, the moving contact 11 moves along an arc-shaped track during the contact and separation process between the moving contact 11 and the first and second static contacts 2, and the arc also moves along an arc-shaped track. The arc-shaped two arc extinguishing grid groups 3 can reduce the resistance of the arc movement, and are more conducive to the arc entering the two arc extinguishing grid groups 3 smoothly, thereby achieving better arc extinguishing effect.

[0145] Preferably, the support base 13 and the support cover 12 are circular and have the same diameter, and the first upper partition plate 51 and the first lower partition plate 52 are also circular and have the same diameter. When the disconnecting switch includes a plurality of switch units 100 arranged in layers, the first upper partition plate 51 and the first lower partition plate 52 are respectively arranged on the housings of two adjacent switch units 100.

[0146] Preferably, the arc extinguishing grid group 3 includes two insulating side plates 31 and a plurality of arc extinguishing grids 32 arranged in layers. The middle part of the arc extinguishing grid 32 is provided with an opening structure, and the arc extinguishing grid 32 forms two grid legs on both sides of the opening structure. Adjacent arc extinguishing grids 32 are arranged in positive and negative staggered manner. That is, one arc extinguishing grid 32 is arranged in positive direction, and the other arc extinguishing grid 32 is arranged in negative direction after being rotated by 180 degrees, so that the inclination directions of the inner side edges of the adjacent arc extinguishing grids 32 are opposite. The bevels of the adjacent arc extinguishing grids 32 are arranged in staggered manner, and a concave chamfer is formed in the middle part of the two arc extinguishing grid groups 3. The formed chamfer is more conducive to elongating the arc to achieve better arc extinguishing effect. The plurality of arc extinguishing grids 32 are arranged in radial manner on the two insulating side plates 31, and the adjacent arc extinguishing grids 32 and the arc extinguishing grids 32 have a fixed included angle. The included angle is an acute angle. The plurality of arc extinguishing grids 32 are arranged in radial manner in layers, which can correspond to the moving track of the moving contact 11. Because the moving contact 11 moves along an arc-shaped track during the contact and separation process between the moving contact 11 and the first and second static contacts 2, and the arc also moves along an arc-shaped track, the radial arrangement of the plurality of arc extinguishing grids 32 in layers can reduce the resistance of the arc movement, and is more conducive to the arc entering the two arc extinguishing grid groups 3 smoothly, thereby achieving better arc extinguishing effect.

[0147] Further, as shown in FIG. 6, the arc extinguishing grid group 3 includes two insulating side plates 31 and a plurality of arc extinguishing grids 32 arranged in layers. Figure 2As shown, the housing of the switch unit 100 is provided with a mounting hole 61, the mounting holes 61 of the plurality of switch units 100 arranged in a stack correspond one by one, the plurality of switch units 100 further include a mounting shaft passing through the mounting hole 61, and the plurality of switch units 100 are fixedly installed through the mounting hole 61 and the mounting shaft; The disconnecting switch is provided with a mounting bracket 62 on both sides, and the disconnecting switch is assembled through the mounting bracket 62 on both sides.

[0148] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used in use, and are only for convenience of description, and do not indicate that the device or element referred to must have a specific orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0149] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be regarded as falling within the protection scope of the present application.

Claims

1. An isolating switch comprising an operating device (105) and a plurality of switching units (100) arranged in a stack, characterized in that: The operating device (105) comprises a device shell (106), an operating mechanism (104) and at least two tripping devices arranged in the device shell (106), wherein the at least two tripping devices comprise a first tripping device (910) and a second tripping device (920), The first tripping device (910) is used to drive the operating mechanism (104) to trip at least when a current and / or voltage fault occurs in a circuit network electrically connected to an input end of a switch electric appliance to which the operating device (105) belongs. The second tripping device (920) is used to drive the operating mechanism (104) to trip at least when a current and / or voltage fault occurs in a circuit network electrically connected to an output end of the switch electric appliance to which the operating device (105) belongs. The plurality of switch units (100) comprises at least one first switch unit (101) and a plurality of second switch units (102), wherein a current-carrying capacity of the first switch unit (101) is greater than that of the second switch unit (102).

2. The disconnector according to claim 1, characterized in that: The second tripping device (920) is a conditional tripping device, and a reset operation of the conditional tripping device is independent of a recocking operation of the operating mechanism (104); after the operating mechanism (104) is tripped by the conditional tripping device and the conditional tripping device is reset from a tripping device action state to a tripping device reset state by an external force, the operating mechanism (104) is allowed to be recocked.

3. The disconnector according to claim 2, characterized in that: The conditional tripping device comprises a tripping rod (924) used to drive the operating mechanism (104) to trip, wherein the tripping rod (924) comprises a reset button; in the tripping device action state, one end of the reset button protrudes outside the device shell (106), and the tripping rod (924) is in limiting cooperation with a recocking part (670) to keep the recocking part (670) in a recocking position of the recocking part (670).

4. The disconnector according to claim 1, characterized in that: Among the at least two tripping devices, one tripping device is a conditional tripping device, and the rest of the tripping devices are general tripping devices; a reset operation of the conditional tripping device is independent of a recocking operation of the operating mechanism (104); after the operating mechanism (104) is tripped by the conditional tripping device and the conditional tripping device is reset from a tripping device action state to a tripping device reset state by an external force, the operating mechanism (104) is allowed to be recocked; when the operating mechanism (104) is recocked from a tripped state, the general tripping devices are reset from a tripping device action state to a tripping device reset state.

5. The disconnector according to claim 2, characterized in that: The operating mechanism (104) comprises a jump part (610), a lock part (660) and a recocking part (670) arranged in rotation, respectively, wherein the recocking part (670) is in first limiting cooperation with the lock part (660) to keep the lock part (660) in snap cooperation with the jump part (610). The condition tripping device drives the re-engaging member (670) to rotate and disengage the first limiting cooperation with the locking member (660), and then the locking member (660) and the jump member (610) disengage the snap cooperation, so that the operating mechanism (104) is switched from the closing state of the operating mechanism (104) to the tripping state of the operating mechanism (104); the condition tripping device keeps the re-engaging member (670) in the tripping position of the re-engaging member (670) in the tripping action state, so that the operating mechanism (104) cannot be re-engaged.

6. The disconnector according to claim 5, characterized in that: The length direction, width direction and height direction of the operating mechanism (104) are direction d1, direction d2 and direction d3 respectively; the operating mechanism (104) comprises a bracket (200), the jump member (610), the locking member (660) and the re-engaging member (670) are rotationally arranged on the bracket (200) and the rotation axes thereof are all parallel to the direction d3, and the jump member (610), the locking member (660) and the re-engaging member (670) are sequentially arranged along the direction d2. The first tripping device (910) is arranged side by side with the operating mechanism (104) along the direction d3, and the first tripping device (910) is sequentially arranged with the re-engaging member (670) along the direction d3; the second tripping device (920) is arranged side by side with the operating mechanism (104) along the direction d1, and the second tripping device (920) is sequentially arranged with the re-engaging member (670) along the direction d1; the first tripping device (910) is located on the same side of the re-engaging member (670) and the second tripping device (920) along the direction d3; in the projection of the operating device (105) perpendicular to the direction d3, the second tripping device (920) is located on the same side of the operating mechanism (104) and the first tripping device (910).

7. The disconnector according to claim 6, characterized in that: The operating mechanism (104) further comprises an operating shaft (300) and a rocker arm (500) rotationally arranged on the bracket (200) and the rotation axes thereof are all parallel to the direction d3, a linkage structure (400), a front connecting rod (620), a rear connecting rod (630), a main spring (700) and a driving member (640) rotationally arranged parallel to the direction d3 and used for being connected with a rotating contact assembly (1) of a switch electric appliance; the operating shaft (300) is connected with the rocker arm (500) through the linkage structure (400), one end of the jump member (610) is rotationally arranged on the bracket (200) through a jump shaft (691) and the other end is snap-fitted with the locking member (660), two ends of the front connecting rod (620) are rotationally connected with the middle part of the jump member (610) and one end of the rear connecting rod (630) through a front connecting shaft (692) and a rear connecting shaft (693) respectively, the other end of the rear connecting rod (630) is rotationally connected with the driving member (640), and two ends of the main spring (700) are connected to the rear connecting shaft (693) and the rocker arm (500) respectively; the rocker arm (500) and the driving member (640) are respectively located at two ends of the operating mechanism (104) along the direction d1, and the re-engaging member (670) and the jump shaft (691) are respectively located at two ends of the operating mechanism (104) along the direction d2.

8. The disconnector according to claim 1, characterized in that: The switch unit (100) comprises a shell and two first static contacts and second static contacts (2) and a rotating contact assembly (1) installed in the shell, two arc extinguishing grid groups (3) are arranged on both sides of the rotating contact assembly (1), the two first static contacts and second static contacts (2) are arranged on both sides of the rotating contact assembly (1) in a spaced manner, the first static contacts and second static contacts (2) and the arc extinguishing grid groups (3) are arranged in a cross manner, the first static contact and / or the second static contact (2) of the first switch unit (101) comprises an integrally formed first contact portion (21), a first connecting portion (22) and at least two first wiring portions (23) connected in sequence, the first contact portion (21) is matched with a moving contact (11) of the rotating contact assembly (1), and the at least two first wiring portions (23) extend outwardly of the shell and are used for external electrical connection.

9. The disconnector according to claim 8, characterized in that: The first static contact and second static contact (2) comprises two parallel first wiring portions (23), the two first wiring portions (23) are perpendicular to the first connecting portion (22), one end of the first connecting portion (22) is connected to the first contact portion (21), the first contact portion (21) comprises a first overlapping portion (212) and a first extension portion (213), the first extension portion (213) is rectangular, the length of the first extension portion (213) is greater than or equal to the distance between the two first wiring portions (23), an included angle is formed between the first extension portion (213) and the first connecting portion (22), the included angle is recessed in the direction of the first connecting portion (22) to form a limiting recess (24) for limiting cooperation with the arc extinguishing grid group (3).

10. The disconnector according to claim 1, characterized in that: The switch unit (100) comprises a shell and two first static contacts and second static contacts (2) and a rotating contact assembly (1) arranged in the shell, the rotating contact assembly (1) comprises a support cover (12), a moving contact (11) and a support seat (13) arranged in a stack, a second through hole (71) is arranged on the support seat (13) and the support cover (12) of a plurality of second switch units (102), at least one drive shaft (7) passes through the second through hole (71) and is connected with the rotating contact assembly (1) of the plurality of second switch units (102) in linkage, and the drive shaft (7) is directly or indirectly connected with an operating mechanism (104).

11. The disconnector according to claim 10, characterized in that: The middle part of the second switch unit (102) is provided with one drive shaft (7), the moving contact (11) comprises oppositely arranged first and second contacts (111) and (112), the first and second contacts (111) and (112) are provided with second through holes (71), one drive shaft (7) penetrates the middle part of the moving contact (11) and penetrates all the second switch units (102).

12. The disconnector according to claim 10, characterized in that: The support seat (13) and the support cover (12) are provided with two second through holes (71), and the middle parts of the plurality of second switch units (102) are provided with two parallel drive shafts (7) in a spaced manner, the two drive shafts (7) pass through the two second through holes (71) respectively, so that the moving contact (11) is arranged between the two drive shafts (7).

13. The disconnector according to claim 1, characterized in that: The switch unit (100) comprises a shell and two first and second static contacts (2) and a rotating contact assembly (1) arranged in the shell, the rotating contact assembly (1) comprising a support cover (12), a moving contact (11) and a support base (13) arranged in layers, the support base (13) and the support cover (12) clamping the moving contact (11); the moving contact (11) comprises oppositely arranged first and second contacts (111, 112), the first and second contacts (111, 112) having clamping gaps accommodating the first and second static contacts (2) at two ends, the moving contact (11) being connected or disconnected with the first and second static contacts (2) through the clamping gaps; a moving contact accommodating groove (14) is arranged between the support base (13) and the support cover (12), and the moving contact (11) is arranged in the moving contact accommodating groove (14), the moving contact (11) further comprising at least one elastic member (144) arranged on opposite surfaces of the first and / or second contacts (111, 112).

14. The disconnector according to claim 13, characterized in that: The moving contact (11) further comprises a contact support (141) and at least one fixing shaft (142), two recesses (143) being arranged on opposite surfaces of the contact support (141), the two recesses (143) being through structures along the length direction of the moving contact (11), the middle portions of the first and second contacts (111, 112) of the moving contact (11) being arranged in the two recesses (143) respectively, and the at least one fixing shaft (142) penetrating through the first and second contacts (111, 112), the contact support (141) and the at least one elastic member (144) to fix the first and second contacts (111, 112), the contact support (141) and the at least one elastic member (144) as a whole, the moving contact accommodating groove (14) being provided with limiting structures matched with the contact support (141), and the contact support (141) being arranged in the moving contact accommodating groove (14).

15. The disconnector according to claim 1, characterized in that: The switch unit (100) comprises a shell and two first and second static contacts (2) and a rotating contact assembly (1) arranged in the shell, the rotating contact assembly (1) comprising a support cover (12), a moving contact (11) and a support base (13) arranged in layers, a hot melting column (131) and a hot melting hole (132) being arranged between the support base (13) and the support cover (12), or a hot melting column (131) and a hot melting groove being arranged between the support base (13) and the support cover (12), and the support base (13) and the support cover (12) being installed and fixed through the hot melting column (131) and the hot melting hole (132) / or the hot melting column (131) and the hot melting groove.

16. The disconnector according to claim 1, characterized in that: The switch unit (100) comprises a shell and two first and second static contacts (2) and a rotating contact assembly (1) arranged in the shell, the rotating contact assembly (1) comprising a support cover (12), a moving contact (11) and a support seat (13) arranged in layers, and the support seat (13) and the support cover (12) are made of insulating gas generating material.

17. The disconnector according to claim 1, characterized in that: The cross-sectional area of the first and second static contacts (2) of the first switch unit (101) is greater than that of the first and second static contacts (2) of the second switch unit (102), and the cross-sectional area of the moving contact (11) of the first switch unit (101) is greater than that of the moving contact (11) of the second switch unit (102).

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