Breaking and isolating interlocking device of upper isolating circuit breaker environment-friendly cabinet and environment-friendly cabinet

Abstract

The utility model discloses a breaking and isolating interlocking device of an upper isolating circuit breaker environment-friendly cabinet and the environment-friendly cabinet, which comprise a bracket arranged in the environment-friendly cabinet, a movable linkage piece arranged on the bracket, and a trigger piece connected to a reclosing trigger shaft and capable of triggering the linkage piece to move, the microswitch is used for electrically controlling and locking the rotation of the two operation shafts; the linkage piece comprises a first linkage plate and a second linkage plate which are detachably connected, and the second linkage plate is provided with shielding pieces for shielding operation ends of two operation shafts in the isolation grounding switch mechanism respectively when the circuit breaker mechanism is switched on, and a disconnecting mechanism for disconnecting the microswitch; according to the utility model, misoperation electric shock accidents can be avoided, the safety is improved, and the overall structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection cabinets, in particular to a disconnection interlocking device of an upper isolating circuit breaker environmental protection cabinet and the environmental protection cabinet. Background Art

[0002] The environmental protection cabinet is mainly used for closing and breaking short-circuit current. The switch adopts vacuum arc extinguishing chamber to extinguish arc, and the overall performance is stable, safe and reliable. The environmental protection cabinet adopts an integrated structure of isolation grounding switch mechanism and circuit breaker mechanism, which is simple and convenient to install and can meet the electricity needs of different customers at the same time.

[0003] In order to ensure the safety of operation, a certain operation sequence must be followed when operating the environmental protection cabinet, namely: when closing the switch, first close the isolating and grounding switch mechanism, then close the circuit breaker mechanism; when opening the switch, first open the circuit breaker mechanism, then open the isolating and grounding switch mechanism; otherwise, misoperation will occur, causing a phase-to-phase short circuit accident; for this purpose, an interlocking device needs to be set between the isolating and grounding switch mechanism and the circuit breaker mechanism to prevent misoperation; however, the existing interlocking device has a complex structure and poor linkage. Utility Model Content

[0004] The utility model aims to provide an isolating interlocking device of an environmental protection cabinet of an upper isolating circuit breaker and an environmental protection cabinet, which can avoid electric shock accidents caused by misoperation, improve safety, and have a simple overall structure.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A disconnection interlocking device of an environmental protection cabinet of an upper isolation circuit breaker and the environmental protection cabinet, comprising a bracket arranged in the environmental protection cabinet, a movable linkage member arranged on the bracket, a trigger member connected to a reclosing trigger shaft and capable of triggering the linkage member to move, and a micro switch for electrically locking the rotation of two operating shafts; the linkage member comprises a first linkage plate and a second linkage plate which are detachably connected, the second linkage plate is provided with shielding members for respectively shielding the operating ends of the two operating shafts in the isolation grounding switch mechanism when the circuit breaker mechanism is closed, and a disconnection mechanism for disconnecting the micro switch.

[0007] By providing a first linkage plate and a second linkage plate and utilizing a shielding member provided on the second linkage plate, the operating ends of the two operating shafts in the isolating and grounding switch mechanism can be shielded when the circuit breaker mechanism is closed. The overall structure is simple and safety is effectively improved.

[0008] On the basis of the above technical solution, the present invention can be improved as follows:

[0009] Furthermore, the disconnect mechanism includes a pressure plate movably arranged on the bracket, one end of the pressure plate can cooperate with the extension formed at the bottom end of the second linkage plate when the circuit breaker mechanism is closed, and the other end of the pressure plate triggers the micro switch to disconnect.

[0010] Furthermore, a support frame is provided on the bracket, and the micro switch is fixedly installed on the support frame. The support frame is formed with an insertion portion on a side away from the bracket, and an insertion hole is provided in the insertion portion. A vertically movable limit rod is inserted on the insertion portion, and the pressure plate is fixedly provided on the limit rod. The pressure plate is extended and bent on a side away from the micro switch to form a stop portion that can cooperate with the bottom end extension portion of the second linkage plate.

[0011] Furthermore, a stroke adjustment plate is provided at the bottom end of the limit rod, and the stroke adjustment plate includes a connecting section connected to the bottom of the limit rod, and an adjustment section connected to the end of the connecting section and vertically facing the bottom of the bracket. An adjusting rod is provided at the end of the adjustment section on the limit rod, and the end of the adjusting rod is a screw rod, on which two limit nuts are provided for fixing the screw rod to the bottom of the bracket.

[0012] By adjusting the positions of the two limit nuts on the screw rod, the vertical movement distance of the stroke adjustment plate is limited. Accordingly, the movement stroke of the limit rod is adjusted to change the pressure plate stroke on the limit rod to meet the sensitivity adjustment needs of the micro switch. The entire adjustment process does not require disassembly of parts and is easy to operate.

[0013] Furthermore, the bracket is provided with two positioning pins arranged along the height direction of the bracket, and the first linkage plate is provided with two elongated holes corresponding to the two positioning pins, and the elongated holes are parallel to the height direction of the bracket; the first linkage plate is correspondingly connected to the two positioning pins through the two elongated holes, and can slide longitudinally on the bracket along the elongated holes.

[0014] Furthermore, the first linkage plate is provided with a fixing column near the top end of one of the elongated holes, a compressed return spring is provided between the fixing column and the positioning pin, one end of the return spring is connected to the fixing column, and the other end of the return spring is connected to the positioning pin.

[0015] Furthermore, the bracket is provided with two guide pins arranged along the height direction of the bracket, and the second linkage plate is provided with a guide groove, which is parallel to the height direction of the bracket. The two guide pins slide in cooperation with the guide groove so that the second linkage plate can slide longitudinally on the bracket along the guide groove.

[0016] An upper isolating circuit breaker environmental protection cabinet comprises a cabinet, an isolating grounding switch mechanism and a circuit breaker mechanism arranged inside the cabinet, and an isolating interlocking device of the upper isolating circuit breaker environmental protection cabinet for interlocking the isolating grounding switch mechanism and the circuit breaker mechanism.

[0017] Furthermore, a cabinet opening and a panel at the cabinet opening are provided on one side of the cabinet body, and an operating hole for operating the first operating shaft and the second operating end in the isolating and grounding switch mechanism is provided on the panel of the cabinet body.

[0018] Compared with the prior art, the utility model technology has the following advantages:

[0019] The utility model provides a detachably connected first linkage plate and a second linkage plate, and provides two shielding members on the second linkage plate, so that the operating ends of the two operating shafts in the isolating and earthing switch mechanism can be shielded when the circuit breaker mechanism is closed, thereby effectively preventing manual operation of the circuit breaker mechanism and the isolating and earthing switch mechanism, avoiding accidents of electric shock due to misoperation, improving safety, and having a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a structural schematic diagram of the upper isolation circuit breaker environmental protection cabinet after removing part of the cabinet side panels in this embodiment;

[0022] Figure 2 This is a schematic diagram of the structure of the isolating interlocking device in this embodiment;

[0023] Figure 3 Schematic diagram of the structure of the first linkage plate in this embodiment;

[0024] Figure 4 Schematic diagram of the structure of the second linkage plate in this embodiment;

[0025] Figure 5 Schematic diagram of the structure of the support frame in this embodiment;

[0026] Figure 6 Schematic diagram of the structure of the pressing plate in this embodiment;

[0027] Figure 7 It is a schematic diagram of the structure in which the limit rod is inserted into the support frame in this embodiment.

[0028] Markings on the accompanying drawings: 1-isolating grounding switch, 2-first operating axis, 3-second operating axis, 4-status indicator disk, 5-grounding indicator board, 6-opening indicator board, 7-circuit breaker, 8-opening operation button, 9-closing operation button, 10-reclosing trigger axis, 11-status indicator board, 12-bracket, 13-first linkage plate, 14-second linkage plate, 15-locating pin, 16-long hole, 17-fixing column, 18-reset spring, 19-swing arm, 20-first baffle, 21-second baffle, 22-guide pin, 23-guide groove, 24-support frame, 25-limit rod, 26-micro switch, 27-travel adjustment plate, 28-adjusting rod, 29-limiting nut, 30-pressure plate, 31-cabinet. DETAILED DESCRIPTION

[0029] The following is a further description of the specific embodiments of the present invention in conjunction with the accompanying drawings. The description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] See also Figures 1 to 7 This embodiment relates to an isolating interlocking device of an upper isolating circuit breaker environmental protection cabinet. An isolating grounding switch mechanism and a circuit breaker mechanism are arranged in the upper isolating circuit breaker environmental protection cabinet, and the isolating grounding switch mechanism is located at the top of the circuit breaker mechanism.

[0031] The isolating grounding switch mechanism includes an isolating grounding switch 1, and a first operating shaft 2 and a second operating shaft 3 for triggering the switching state of the isolating grounding switch 1. By driving the two operating shafts respectively, the isolating grounding moving contact in the isolating grounding switch 1 can be driven to switch between the static contact of the isolating grounding switch 1, the suspended isolation position and the static contact of the grounding switch; the end of the first operating shaft 2 and the second operating shaft 3 facing the environmental protection cabinet operation panel is the operating end.

[0032] The isolating earthing switch 1 has a rotatable status indicator disk 4, on which a grounding position and an opening position are arranged. The status indicator disk 4 is provided with a grounding indicator board 5 at the grounding position, and the status indicator disk 4 is provided with an opening indicator board 6 at the opening position; when the isolating earthing switch 1 is grounded and closed, the grounding indicator board 5 blocks the operating end of the second operating shaft 3, and the operating end of the first operating shaft 2 is exposed; when the isolating earthing switch 1 is grounded and opened, the opening indicator board 6 blocks the operating end of the first operating shaft 2, and the operating end of the second operating shaft 3 is exposed.

[0033] The circuit breaker mechanism includes a circuit breaker 7 provided with a reclosing trigger shaft 10, an opening operation button 8 for electrically controlling the opening of the circuit breaker 7, and a closing operation button 9 for electrically controlling the closing of the circuit breaker 7; one end of the reclosing trigger shaft 10 is an indication end and is provided with a status indication plate 11.

[0034] In order to interlock the isolating and grounding switch mechanism and the circuit breaker mechanism, an isolating interlocking device is provided in the present embodiment, and the isolating interlocking device includes a bracket 12 arranged in the environmental protection cabinet, a movable linkage member arranged on the bracket 12, and a trigger member connected to the reclosing trigger shaft 10 that can trigger the linkage member to move; two shielding members are provided on the linkage member; by operating the closing operation button 9, the circuit breaker mechanism is closed, and the reclosing trigger shaft 10 rotates accordingly, driving the trigger member to trigger the linkage member to move, so that the two shielding members on the linkage member respectively cover the operating ends of the first operating shaft 2 and the second operating shaft 3 to complete the interlocking.

[0035] Specifically, the bracket 12 is formed by splicing multiple sheet metal plates together; the linkage part includes a first linkage plate 13 and a second linkage plate 14 that are connected to each other, and both linkage plates are long plates vertically arranged on the bracket 12; the first linkage plate 13 is located at the circuit breaker mechanism, and the second linkage plate 14 is located at the isolation and grounding switch mechanism; when the circuit breaker mechanism is closed, the two linkage plates can be moved from the first position to the second position on the bracket 12 at the same time according to a preset trajectory, so that the two shielding members respectively shield the operating ends of the first operating shaft 2 and the second operating shaft 3, thereby preventing the operator from operating the two operating shafts of the isolation and grounding switch mechanism.

[0036] The bracket 12 is provided with two locating pins 15 arranged along the height direction of the bracket 12 at the circuit breaker mechanism, and two elongated holes 16 corresponding to the two locating pins 15 are opened on the first linkage plate 13, and the elongated holes 16 are parallel to the height direction of the bracket 12; the first linkage plate 13 is correspondingly connected to the two locating pins 15 through the two elongated holes 16, and can slide longitudinally on the bracket 12 along the elongated holes 16; for the convenience of description, the two elongated holes 16 are named as the first elongated hole 16 and the second elongated hole 16 respectively, the first elongated hole 16 is close to the bottom end of the first linkage plate 13, and the second elongated hole 16 is close to the top end of the first linkage plate 13; the two locating pins 15 are named as the first locating pin 15 and the second locating pin 15 respectively, the first locating pin 15 is inserted through the first elongated hole 16, and the second locating pin is inserted through the second elongated hole 16.

[0037] The first linkage plate 13 is provided with a fixing column 17 at the top end near the first elongated hole 16 , and the fixing column 17 is perpendicular to the outer plate surface of the first linkage plate 13 ; a compressed return spring 18 is provided between the fixing column 17 and the first positioning pin 15 , one end of the return spring 18 is connected to the fixing column 17 , and the other end of the return spring 18 is connected to the first positioning pin 15 .

[0038] When the circuit breaker mechanism is closed, the trigger member provides a force to trigger the first linkage plate 13 to move from the first position to the second position along the moving trajectory, the two positioning pins 15 respectively abut against the bottom walls of the two elongated holes 16, the fixing column 17 is close to the first positioning pin 15, and the reset spring 18 is compressed and contracted to form an elastic force. At this time, the two shielding members respectively block the operating ends of the first operating shaft 2 and the second operating shaft 3.

[0039] When the circuit breaker mechanism is opened, the trigger is reset. Under the elastic force of the reset spring 18, the fixed column 17 moves away from the first positioning pin 15, and the first linkage plate 13 moves from the second position to the first position along the moving trajectory. The two positioning pins 15 respectively abut against the top walls of the two elongated holes 16 to complete the reset. At this time, the operating ends of the first operating shaft 2 and the second operating shaft 3 are exposed.

[0040] It should be noted that the first position is the top wall of the elongated hole 16 , and the second position is the bottom wall of the elongated hole 16 . The first position is closer to the fixing column 17 than the second position. The two elongated holes 16 form a vertical movement track to guide the first linkage plate 13 .

[0041] The bottom end of the first linkage plate 13 is bent inward to form a trigger portion, which is perpendicular to the inner plate surface of the first linkage plate 13; the trigger member is a swing arm 19, which includes an annular portion and a triangular swing portion radially extending from the outer circumferential surface of the annular portion, and the tip of the swing portion forms a rounded corner; the annular portion of the swing arm 19 is sleeved on the reclosing trigger shaft 10 and fixed by a pin, and pin holes for inserting the pin are provided on the annular portion of the swing arm 19 and the reclosing trigger shaft 10, and the swing portion of the swing arm 19 abuts against the bottom trigger portion of the first linkage plate 13.

[0042] When the circuit breaker mechanism is closed, the reclosing trigger shaft 10 rotates, driving the swinging part of the swing arm 19 to swing around the axis of the reclosing trigger shaft 10, and by contacting the triggering part of the first linkage plate 13, driving the first linkage plate 13 to move from the first position to the second position along the moving trajectory to complete the interlocking. At this time, the virtual line between the tip of the swinging part of the swing arm 19 and the center of the annular part is parallel to the moving trajectory of the first linkage plate 13, and an indication mark corresponding to the virtual line is provided on the outer panel surface of the indicator plate arranged on the reclosing trigger shaft 10, so that the operator can intuitively know the closing status of the circuit breaker mechanism.

[0043] A long plate-shaped connecting portion perpendicular to the outer plate surface of the first linkage plate 13 is provided on one side of the top end of the first linkage plate 13. The top connecting portion of the first linkage plate 13 extends out of the top end of the first linkage plate 13 and is detachably connected to the bottom end of the second linkage plate 14. Through this connection method, the first linkage plate 13 and the second linkage plate 14 can be detachably assembled with each other. During maintenance, the two linkage plates can be replaced separately without the need for overall disassembly, which effectively improves maintenance efficiency.

[0044] A long plate-shaped connecting portion perpendicular to the outer plate surface of the second linkage plate 14 is provided on one side of the bottom end of the second linkage plate 14, and the bottom end connecting portion of the second linkage plate 14 and the top end connecting portion of the first linkage plate 13 are fixedly connected to each other by bolts; after the other side of the bottom end of the second linkage plate 14 extends in a direction away from the connecting portion of the second linkage plate 14 to form an extension portion, it continues to vertically extend toward the top end of the second linkage plate 14 to form a first baffle 20, and one side of the top end of the second linkage plate 14 extends to form a second baffle 21; the two baffles serve as shielding members, wherein the first baffle 20 is used to shield the operating end of the first operating shaft 2, and the second baffle 21 is used to shield the operating end of the second operating shaft 3; the bracket 12 is provided with two guide pins 22 arranged along the height direction of the bracket 12 at the isolating and grounding switch mechanism, and a guide groove 23 is opened on the second linkage plate 14, and the guide groove 23 is parallel to the height direction of the bracket 12; the two guide pins 22 are slidably matched with the guide groove 23, so that the second linkage plate 14 can slide longitudinally on the bracket 12 along the guide groove 23.

[0045] When the circuit breaker mechanism is closed, the first linkage plate 13 moves from the first position to the second position along the moving trajectory, driving the second linkage plate 14 to move, and making the first baffle 20 on the second linkage plate 14 block the operating end of the first operating shaft 2, and the second baffle 21 blocks the operating end of the second operating shaft 3. At this time, the operator cannot operate the isolating and grounding switch mechanism, thereby completing the interlocking of the circuit breaker mechanism and the isolating and grounding switch mechanism, effectively preventing manual operation of the circuit breaker mechanism and the isolating and grounding switch mechanism, reducing the occurrence of electric shock accidents, and improving safety.

[0046] A support frame 24 is provided at the connection between the first linkage plate 13 and the second linkage plate 14 of the bracket 12. The support frame 24 is an L-shaped frame body, which is fixed to the bracket 12 by bolts; the support frame 24 is composed of a straight plate section and a vertical plate section perpendicular to each other, and a micro switch 26 for electrically locking the rotation of the two operating shafts is provided on the vertical plate section, and the micro switch 26 has a contact and a pressure piece; the vertical plate section and the straight plate section are both formed with an insertion portion on the side away from the bracket 12, and the insertion portion is provided with an insertion hole, and a limit rod 25 can be vertically movably inserted between the insertion portions on the vertical plate section and the straight plate section of the support frame 24, and a pressure plate 30 that can abut the contact pressure piece on the micro switch 26 is provided at the top end of the limit rod 25, and the pressure plate 30 extends and bends on the side away from the micro switch 26 to form a stop portion, and the stop portion can be stopped and matched with the bottom end extension portion of the second linkage plate 14.

[0047] When the circuit breaker mechanism is closed, the bottom extension of the second linkage plate 14 cooperates with the stopper on the pressure plate 30 to drive the pressure plate 30 to separate from the pressure piece on the microswitch 26, so that the pressure piece of the microswitch 26 is separated from the contact. At this time, the two operating shafts in the isolating and grounding switch mechanism are unlocked, and the circuit breaker mechanism state switching can be completed manually or electrically; when the circuit breaker mechanism is opened, the pressure plate 30 presses against the pressure piece of the microswitch 26 to make the pressure piece contact and conduct with the contact of the microswitch 26. At this time, the two operating shafts in the isolating and grounding switch mechanism are locked.

[0048] A stroke adjustment plate 27 is provided at the bottom end of the limit rod 25. The stroke adjustment plate 27 includes a connecting section connected to the bottom of the limit rod 25, and an adjustment section connected to the end of the connecting section and vertically facing the bottom of the bracket 12. The connecting section and the adjustment section are in an inverted L-shaped structure; an adjustment rod 28 is provided at the end of the adjustment section on the limit rod 25. The end of the adjustment rod 28 is a screw rod, and two limit nuts 29 are provided on the screw rod. The screw rod is fixed by clamping the bottom plate of the bracket 12 with the two limit nuts 29; the positions of the two limit nuts 29 on the screw rod are adjusted to limit the moving distance of the stroke adjustment plate 27 in the vertical direction. Accordingly, the moving stroke of the limit rod 25 is adjusted, thereby changing the stroke of the pressure plate 30 on the limit rod 25 to meet the sensitivity adjustment needs of the micro switch 26; when the stroke of the pressure plate 30 is reduced, the contact time between the pressure plate and the contact of the micro switch 26 is reduced accordingly; when the stroke of the pressure plate 30 is increased, the contact time between the pressure plate and the contact of the micro switch 26 is increased accordingly; the entire adjustment process does not require disassembly and assembly of parts, and the operation is convenient.

[0049] See also Figure 1 The present embodiment also relates to an isolating circuit breaker environmental protection cabinet, comprising a cabinet body 31, an isolating grounding switch mechanism and a circuit breaker mechanism arranged inside the cabinet body 31, and the above-mentioned isolating interlocking device for interlocking the isolating grounding switch mechanism and the circuit breaker mechanism; the isolating grounding switch mechanism is located at the top of the circuit breaker mechanism.

[0050] The cabinet 31 is a rectangular box structure, with a cabinet opening and a panel at the cabinet opening that can be opened and closed provided on one side of the cabinet 31 , and a accommodating chamber that can accommodate an isolating and grounding switch mechanism, a circuit breaker mechanism and an isolating interlocking device is formed inside the cabinet 31 .

[0051] The isolating and grounding switch mechanism includes an isolating and grounding switch 1, and a first operating shaft 2 and a second operating shaft 3 for triggering the switching state of the isolating and grounding switch 1. By driving the two operating shafts respectively, the isolating and grounding moving contact in the isolating and grounding switch 1 can be driven to switch between the static contact of the isolating and grounding switch 1, the suspended isolation position and the static contact of the grounding switch; the end of the first operating shaft 2 and the second operating shaft 3 facing the operating panel of the environmental protection cabinet is the operating end; and an operating hole for operating the first operating shaft 2 and the second operating end is opened on the panel of the cabinet body 31.

[0052] The above-mentioned embodiments of the utility model are not intended to limit the protection scope of the utility model, and the implementation methods of the utility model are not limited to these. All other various forms of modifications, replacements or changes made to the above-mentioned structure of the utility model based on the above-mentioned contents of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the utility model, should fall within the protection scope of the utility model.

Claims

1. A disconnection interlocking device for an environmental protection cabinet of an upper isolation circuit breaker, comprising a bracket arranged in the environmental protection cabinet, a movable linkage member arranged on the bracket, a trigger member connected to the reclosing trigger shaft and capable of triggering the linkage member to move, and a micro switch for electrically controlling the rotation of two operating shafts; characterized in that: The linkage member includes a first linkage plate and a second linkage plate which are detachably connected. The second linkage plate is provided with shielding members for respectively shielding the operating ends of two operating shafts in the grounding switch mechanism when the circuit breaker mechanism is closed, and a disconnection mechanism for disconnecting the micro switch.

2. The disconnection interlocking device of the upper isolating circuit breaker environmental protection cabinet according to claim 1 is characterized in that: The disconnect mechanism includes a pressure plate movably arranged on the bracket, one end of which can cooperate with an extension formed at the bottom end of the second linkage plate when the circuit breaker mechanism is closed, and the other end of the pressure plate triggers the micro switch to disconnect.

3. The disconnection interlocking device of the upper isolating circuit breaker environmental protection cabinet according to claim 2 is characterized in that: A support frame is arranged on the bracket, and the micro switch is fixedly installed on the support frame. The support frame is formed with an insertion portion on a side away from the bracket, and an insertion hole is provided in the insertion portion. A vertically movable limit rod is inserted on the insertion portion. The pressure plate is fixedly arranged on the limit rod, and the pressure plate is extended and bent on a side away from the micro switch to form a stop portion that can cooperate with the bottom end extension portion of the second linkage plate.

4. The disconnection interlocking device of the upper isolating circuit breaker environmental protection cabinet according to claim 3 is characterized in that: A stroke adjustment plate is provided at the bottom end of the limit rod, and the stroke adjustment plate includes a connecting section connected to the bottom of the limit rod, and an adjustment section connected to the end of the connecting section and vertically facing the bottom of the bracket. An adjusting rod is provided at the end of the adjustment section on the limit rod, and the end of the adjusting rod is a screw rod, which is provided with two limit nuts that can fix the screw rod to the bottom of the bracket.

5. The disconnection interlocking device of the upper isolating circuit breaker environmental protection cabinet according to claim 1, characterized in that: The bracket is provided with two positioning pins arranged along the height direction of the bracket, and the first linkage plate is provided with two elongated holes corresponding to the two positioning pins, and the elongated holes are parallel to the height direction of the bracket; the first linkage plate is correspondingly connected to the two positioning pins through the two elongated holes, and can slide longitudinally on the bracket along the elongated holes.

6. The disconnection interlocking device of the upper isolating circuit breaker environmental protection cabinet according to claim 5, characterized in that: The first linkage plate is provided with a fixing column near the top end of one of the elongated holes, a compressed return spring is provided between the fixing column and the positioning pin, one end of the return spring is connected to the fixing column, and the other end of the return spring is connected to the positioning pin.

7. The disconnection interlocking device of the upper isolating circuit breaker environmental protection cabinet according to claim 3, characterized in that: The bracket is provided with two guide pins arranged along the height direction of the bracket, and the second linkage plate is provided with a guide groove, which is parallel to the height direction of the bracket. The two guide pins slide in cooperation with the guide groove so that the second linkage plate can slide longitudinally on the bracket along the guide groove.

8. An upper isolation circuit breaker environmental protection cabinet, characterized in that: It comprises a cabinet, an isolating and grounding switch mechanism and a circuit breaker mechanism arranged inside the cabinet, and an isolating and interlocking device of the upper isolating circuit breaker environmental protection cabinet as described in any one of claims 1 to 7 for interlocking the isolating and grounding switch mechanism and the circuit breaker mechanism.

9. The upper isolation circuit breaker environmental protection cabinet according to claim 8, characterized in that: A cabinet opening and a panel at the cabinet opening which can be opened and closed are arranged on one side of the cabinet body, and an operating hole for operating a first operating shaft and a second operating end in the isolating and grounding switch mechanism is arranged on the panel of the cabinet body.

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