Circuit breaker interlocking device for solid insulation switchgear

Abstract

The invention discloses a circuit breaker interlocking device for a solid insulation switch cabinet, comprising a cabinet, a switch-off half-shaft, a switch-off half-shaft and an isolating operation shaft are rotatably arranged in the cabinet, a panel is arranged on the cabinet, a switch-off window, a switch-off window and an operation window are arranged on the panel, a shielding plate is slidably arranged on the panel, an operation hole is arranged on the shielding plate, a power connection linkage part and an isolating linkage part are arranged in the cabinet, a shielding plate extends toward the switch-off window to form a baffle, a lock pin is penetrated at the lower edge of the cabinet, a locking plate is connected to the lock pin, a reset spring is sleeved on the lock pin, the reset spring abuts between the cabinet and the locking plate, a lock pin limiter is also arranged in the cabinet, a locking protrusion is extended toward the shielding plate, a locking rib is formed at the edge of the shielding plate, and the locking protrusion abuts against the locking rib to form a limit on the sliding of the shielding plate. The structure is simple and reasonable, and the isolating operation shaft, the switch-off half-shaft, the switch-off half-shaft and the lower door are effectively interlocked, so as to ensure the overall safe use.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum circuit breakers, in particular to a circuit breaker interlocking device used for a solid insulation switch cabinet. Background Art

[0002] Solid insulated switchgear is a combination of equipment that uses solid insulating materials to completely and continuously encapsulate the primary circuit. This combination of equipment is gradually replacing gas insulated switchgear that uses SF6 gas as the insulating medium due to its small size, high mechanical strength, and strong environmental adaptability. It is a mainstream direction for the development of medium-voltage switchgear in the future.

[0003] The existing solid insulated switchgear is used with the kinetic energy provided by the closing spring. The closing button is operated to make the closing half shaft rotate and release the button. The spring potential energy is released to drive the main shaft of the mechanism to rotate forward, and the moving and static contacts of the switch are engaged to close the switch and transmit power. When power outage is required, the opening button is operated, the opening half shaft rotates and releases the button. The opening spring drives the main shaft of the mechanism to reverse, and the moving and static contacts of the switch are quickly separated to cut off the power. Of course, after the opening half shaft rotates, it will also automatically reset, which is convenient for the next power-on and closing operation of the circuit breaker.

[0004] The isolating switch of the existing solid insulation switch cabinet is in the form of a direct-acting isolating switch. By operating the isolating switch, the isolation and grounding can be opened or closed. The direct-acting isolating switch is mainly driven by operating the isolation main shaft. The isolation main shaft adopts a screw structure, and the screw is also threaded with a connecting plate. The connecting plate is slidably arranged in the switch cabinet body to limit the rotation of the connecting plate. When the isolation main shaft is operated and rotated, the connecting plate can be pushed back and forth in the cabinet body, driving the structure connected to the connecting plate, thereby realizing the opening and closing operation. When operating the solid insulated switchgear, in order to ensure operational safety, after the power is connected and the switch is closed, the closing half-shaft rotates. At this time, the isolating switch needs to be in the closed state and the opening operation cannot be performed. The opening operation of the isolating switch can only be performed after the opening half-shaft is operated to open the switch. At the same time, when the isolating switch is in the closed state, the lower door of the overall switchgear cannot be opened for maintenance. Similarly, when the lower door is opened, the isolating switch needs to be in the open state and the closing operation cannot be performed. Of course, the closing half-shaft cannot be operated at this time. The isolating switch can only be closed after the lower door is closed. At present, solid insulated switchgear usually adopts an interlocking structure to meet the above-mentioned operating requirements to avoid misoperation and cause safety accidents. However, the existing interlocking mechanism structure is relatively complex, with many parts and components, and is difficult to install and maintain, difficult to replace, and not conducive to user operation. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a circuit breaker interlocking device for a solid insulation switch cabinet, which has a simple and reasonable structure and can effectively realize the interlocking between the isolation operating shaft, the closing half shaft, the opening half shaft and the lower door to ensure the overall safe use.

[0006] The present invention provides a circuit breaker interlocking device for a solid insulation switch cabinet, comprising a cabinet body, wherein a switch-off half-shaft, a switch-on half-shaft and an isolating operating shaft are rotatably arranged in the cabinet body, a panel is arranged on the cabinet body, a switch-off window for operating the switch-off half-shaft for closing operation, a switch-off window for operating the switch-off half-shaft for opening operation and an operating window for operating the isolating operating shaft for opening or closing are arranged on the panel, a shielding plate is slidably arranged on the panel, an operating hole is arranged on the shielding plate corresponding to the position of the operating window, an electric connection linkage part is arranged in the cabinet body for limiting the sliding of the shielding plate after the switch-off half-shaft is closed so that the operating hole and the operating window overlap, the shielding plate extends toward the closing window to form a blocking piece, and the cabinet The cabinet is also provided with an isolation linkage member for limiting the blocking piece from exposing the closing window after the isolation operating shaft is opened; a lock pin for locking the lower door is penetrated by the lower edge of the cabinet; a locking plate is connected to the lock pin; a reset spring is sleeved on the lock pin; the reset spring abuts between the cabinet and the locking plate; a lock pin limiter is also provided in the cabinet for limiting the lock pin from retracting into the cabinet to open the lower door when the isolation operating shaft is closed; a locking protrusion is extended toward the baffle plate for limiting the sliding of the baffle plate so that the operating window coincides with the operating hole or exposes the closing window when the lock pin is retracted into the cabinet; a locking rib is formed on the edge of the baffle plate, and the locking protrusion abuts against the locking rib to limit the sliding of the baffle plate.

[0007] The beneficial effect of such arrangement is as follows: by adopting the above scheme, the closing half-shaft is operated to rotate through the closing window, and there are many operating methods here, such as inserting a wrench to drive the closing half-shaft to rotate, or pressing a button to drive a push rod to move, and a push plate is arranged on the closing half-shaft, and the push rod abuts against the push plate, thereby driving the closing half-shaft to rotate. After the closing half-shaft rotates to close the circuit, the shielding plate is limited by the power-connected linkage to prevent the shielding plate from sliding, so that the operating window and the operating hole overlap, thereby avoiding grounding and isolation in the energized state of the closing circuit, and avoiding unnecessary dangers. In this state, due to the closing of the isolation operating shaft, the lock pin limiter limits the lock pin from retracting into the cabinet, so that the lower door cannot be opened, avoiding the accidental operation of opening the lower door in the energized state. After the opening half-shaft is opened, the operation mode of the opening half-shaft is similar to that of the closing half-shaft, and both can be adopted in various forms, which will not be elaborated here. After the opening half-shaft is opened, the power-on linkage is reset to release the limit on the baffle plate, so that the baffle plate can slide, so that the isolation operating shaft can be operated to open and close. After the isolation operating shaft is opened, on the one hand, the lock pin limiter releases the sliding of the locking plate. The locking mechanism is such that the locking plate can be bounced up under the action of the reset spring, so that the lock pin can be retracted into the cabinet body, and the lower door can be opened. Here, the lower door of the solid insulated switch cabinet slides up and down. When the lock pin can be retracted into the cabinet body, the lower door can be pushed up without being interfered by the lock pin. On the other hand, after the isolation operating shaft is opened, the baffle plate is locked by the isolation linkage to limit the sliding of the closing window, so that the power-on closing cannot be performed. At the same time, since the lock pin is connected to the lower door, after the lower door is opened, the locking plate is driven to move up, and the locking protrusion on the locking plate will be blocked by the locking baffle. On one side, when the operating shield plate slides, the locking protrusion conflicts with the locking retaining edge, so that the shield plate cannot slide, avoiding the overlap of the operating hole and the operating window to operate the isolation operating shaft. After the lower door is closed, the locking plate is driven to move downward, so that the locking protrusion is away from the locking retaining edge, thereby releasing the lock on the shield plate, and the closing operation of the isolation operating shaft can be performed. After the isolation operating shaft is closed, the isolation linkage releases the limit on the shield plate, so that the closing window can be exposed for power-on closing. This arrangement has a simple structure, is easy to operate, and improves the overall use effect and efficiency. It can also effectively realize the interlocking between the isolation operating shaft, the closing half shaft, the opening half shaft and the lower door to ensure overall safe use.

[0008] The present invention is further configured such that an operating main shaft is rotatably arranged in the cabinet, the operating main shaft is drivingly connected to the closing half shaft and the opening half shaft, the operating main shaft is connected to a rocker arm, the rocker arm is provided with a connecting protrusion, the power-connecting linkage part is slidingly arranged in the cabinet along the height direction, the power-connecting linkage part is provided with a connecting hole corresponding to the position of the connecting protrusion, the connecting hole and the connecting protrusion are clearance-matched to form a driving force for the operating main shaft to slide with the power-connecting linkage part, the power-connecting linkage part is also provided with a power-connecting limit block, the side wall of the baffle plate is provided with a power-connecting edge, the power-connecting limit block abuts against the power-connecting edge to form a limit on the sliding of the baffle plate.

[0009] The beneficial effect of such arrangement is that, by adopting the above scheme, the operating main shaft in the cabinet is linked with the closing half shaft and the opening half shaft. After the closing half shaft or the opening half shaft rotates, the operating main shaft will be driven to rotate forward or reverse, thereby connecting or disconnecting the power. When closing the switch, the swing rod arranged on the operating main shaft will cooperate with the clearance between the connecting hole and the connecting protrusion, and the power connection linkage will be moved in the height direction, so that the power connection limit block on the power connection linkage will be moved to the power connection retaining edge position, thereby being stuck on the side of the power connection retaining edge to limit the shielding. The movement of the plate, after the gate is opened, the operating main shaft is reversed, driving the rocker arm to move in the opposite direction, thereby driving the power-connecting linkage to move and reset, so that the power-connecting limit block on the power-connecting linkage is away from the power-connecting retaining edge, thereby releasing the lock on the sliding of the baffle plate, allowing the baffle plate to slide to make the operating hole and the operating window coincide with each other, thereby isolating the operation shaft. This structure is simple, easy to operate, and simple to debug. After installation, the position of the limit block can be changed and welded according to the displacement to ensure the interference limit effect and improve the use effect of the overall structure.

[0010] The present invention is further configured such that a counter is also provided in the cabinet, the swing arm of the counter is rotatably connected to the power connection linkage, and a counting window is provided on the panel at a position corresponding to the counter.

[0011] The beneficial effect of such a setting is: adopting the above-mentioned scheme, a counter is set, and its counting swing arm is connected to the power-connecting linkage part. As the limit part slides, the counter swing arm is driven to swing, thereby completing the counting operation. The number of opening and closing times of the entire equipment can be recorded conveniently and efficiently, providing data support for subsequent maintenance and inspection. At the same time, the structure is simple, which is conducive to operation and observation, and improves the use effect of the overall solution structure.

[0012] The present invention is further configured to have a connecting frame arranged in the cabinet, a connecting plate slidably arranged on the connecting frame, an isolation main shaft threadedly fitted on the connecting plate, the isolation main shaft rotatably arranged in the cabinet and transmission-coordinated with the isolation operating shaft, the isolation linkage member slidably arranged on the connecting frame along the height direction, a crank arm swingably connected to the connecting frame, one end of the crank arm is connected to a push rod, and the other end is connected to the isolation linkage member, the connecting plate abuts against the push rod to form a drive for the isolation linkage member to slide on the connecting frame, a limiting hook is provided on the isolation linkage member corresponding to the position of the baffle plate, an isolation protrusion is provided on the baffle plate, the limiting hook abuts against the isolation protrusion to form a limit on the sliding of the baffle plate to expose the closing window, and a reset component for resetting the isolation linkage member is also connected to the push rod.

[0013] The beneficial effect of such a configuration is: adopting the above-mentioned scheme, the isolation linkage is configured in this way, when operating the isolation operating shaft to open and close the switch, it will drive the isolation main shaft to rotate. The transmission between the isolation main shaft and the isolation operating shaft can adopt gear transmission, which belongs to the existing technology and will not be elaborated here. The rotation of the main shaft drives the connecting plate that cooperates with it with the thread to slide, thereby completing the opening or closing action. During the sliding process of the connecting plate, it will resist the push rod, and the push rod slides and pushes the top crank arm, thereby realizing the reversal of force and driving the isolation linkage to slide in the height direction. After the isolation operating shaft completes the opening, the limit hook on the isolation linkage will resist the isolation protrusion on the side wall of the baffle plate, thereby limiting the baffle plate from sliding further to expose the closing window. When the isolation operating shaft is closed, the reset assembly will reset the isolation linkage, thereby contacting the limit of the sliding of the baffle plate, so that the baffle plate can slide to expose the closing window for closing operation. This structure is simple, conducive to operation, and effectively improves the use effect of the overall equipment.

[0014] The present invention is further configured such that the reset assembly includes a linkage plate and a reset spring, the linkage plate is slidably arranged on the connecting frame, a hook is arranged at one end of the linkage plate and is hooked on the push rod, and a guide groove is arranged at the other end, a guide block is arranged on the connecting frame, the guide block and the guide groove slide and cooperate to form the sliding of the linkage plate on the connecting frame, a reset hook is also arranged on the linkage plate, and the reset spring hook is arranged between the guide block and the reset hook.

[0015] The beneficial effect of such a configuration is: by adopting the above-mentioned scheme, through such a reset structure, during the closing process of the connecting plate sliding assembly, the connecting plate loses its resistance to the push rod, so that the linkage plate can be reset under the action of the reset spring, thereby pulling the push rod, driving the crank arm to rotate and reset, thereby driving the isolation linkage member to slide, so that the limit hook no longer resists the second limit plate, so that the baffle plate can slide to expose the closing window for the closing operation. This structure is simple, easy to implement, and quick to reset.

[0016] The present invention is further configured such that an indicator arm is fixedly connected to the crank arm, an indicator sign is connected to the indicator arm, a display window is provided on the panel corresponding to the position of the indicator sign, and the indicator sign is larger than the display window.

[0017] The beneficial effect of such a setting is: by adopting the above scheme, the indicator arm is arranged to rotate synchronously with the crank arm, so that the status of the overall switch cabinet can be timely indicated after the isolation operating shaft is operated, which can be seen more intuitively, thereby improving the overall use effect. Furthermore, the display window is smaller than the indicator sign, so that the indicator sign can shield the display window well to prevent dirt from entering from the display window, thereby improving the protection level of the overall equipment and reaching the protection level of IP4X.

[0018] The present invention is further configured to have a positioning groove on the locking plate, a swing seat on the panel corresponding to the positioning groove, the locking pin limiting member is a swing plate, the swing plate is swingably arranged on the swing seat, the upper end of the swing plate is a resistance end, and the lower end is a limiting end, the limiting end of the swing plate resists against the lower edge of the positioning groove to form a limit for the sliding of the locking plate, a resistance arm extends toward the resistance end on the connecting plate, the resistance arm resists against the resistance end of the swing plate to form a limit end away from the lower edge of the positioning groove, and a reset torsion spring is provided on the swing seat for resetting the swing plate so that the limiting end resists against the lower edge of the positioning groove to limit the sliding of the locking plate.

[0019] The beneficial effect of such a configuration is that, with the above scheme, when the isolating operating shaft is in the closed position, the resistance arm on the connecting plate will not resist the resistance end at this time, so that the swing plate makes the limit end resist the lower edge of the positioning groove under the action of the reset torsion spring, so that the locking plate cannot bounce up under the action of the reset spring, so that the locking pin is exposed outside the cabinet body, and the lower door cannot be opened, thereby avoiding the danger of opening the lower door when the isolating switch and the earthing switch are in the closed state. After the opening of the isolating operating shaft is completed, the connecting plate will move forward so that the resistance arm resists the resistance end, so that the swing plate will swing, so that the limit end will be tilted and away from the lower edge of the positioning groove, so that the locking plate can slide under the action of the reset spring, so that the locking pin can be immersed in the cabinet body, and the lock of the lower door is released. This structure is simple, easy to implement, and has a good upper and lower door interlocking effect.

[0020] The present invention is further configured such that an operating handle is extended outwardly from the baffle plate to the panel, a sliding groove is provided on the panel along the width direction corresponding to the position of the operating handle, and identification protrusions are provided at intervals on the inner wall of the sliding groove.

[0021] The beneficial effect of such a setting is that: by adopting the above scheme, an operating handle is provided to facilitate operation by the operator, and an identification protrusion is provided at the same time, so that when the handle slides, it can be stuck in the identification protrusion to achieve positioning of the handle, which is also convenient for the operator to observe. This structure is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a panel in a perspective view according to an embodiment of the present invention;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of the position of the power connection linkage plate in an embodiment of the present invention;

[0026] Figure 5 is a rear view of a panel in an embodiment of the present invention;

[0027] Figure 6 It is a schematic cross-sectional structure diagram of the position of the isolation linkage plate in an embodiment of the present invention;

[0028] Figure 7 It is a schematic cross-sectional structure diagram of the position of the swing plate in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] Depend on Figures 1 to 7Disclosed is a circuit breaker interlocking device for a solid insulated switch cabinet, comprising a cabinet 1, wherein a switch-off half-shaft, a switch-off half-shaft and an isolating operating shaft 13 are rotatably arranged in the cabinet 1, wherein a panel 2 is arranged on the cabinet 1, wherein a switch-off window 21 for operating the switch-off half-shaft for closing operation, a switch-off window 22 for operating the switch-off half-shaft for opening operation and an operating window 23 for operating the isolating operating shaft 13 for opening or closing are arranged on the panel 2, wherein a shielding plate 3 is slidably arranged on the panel 2, wherein an operating hole 32 is arranged on the shielding plate 3 corresponding to the position of the operating window 23, wherein an electric connection linkage member 6 is arranged in the cabinet 1 for limiting the sliding of the shielding plate 3 after the switch-off half-shaft is closed so that the operating hole 32 overlaps with the operating window 23, wherein the shielding plate 3 extends toward the switch-off window 21 to form a baffle 31, and wherein the cabinet 1 is also provided with a baffle plate 32 for closing the switch-off half-shaft. The isolating linkage part 7 is used to limit the blocking piece 31 from exposing the closing window 21 after the isolating operating shaft 13 is opened. A lock pin 4 for locking the lower door is penetrated by the lower edge of the cabinet 1. A locking plate 41 is connected to the lock pin 4. A reset spring 43 is sleeved on the lock pin 4. The reset spring 43 abuts between the cabinet 1 and the locking plate 41. The cabinet 1 is also provided with a lock pin limiter for limiting the lock pin 4 from retracting into the cabinet 1 to open the lower door when the isolating operating shaft 13 is closed. The locking plate 41 extends toward the baffle plate 3 to limit the sliding of the baffle plate 3 so that the operating window 23 overlaps with the operating hole 32 or exposes the closing window 21 when the lock pin 4 is retracted into the cabinet 1. A locking protrusion 43 is formed on the edge of the baffle plate 3. The locking protrusion 43 abuts against the locking protrusion 34 to limit the sliding of the baffle plate 3.The beneficial effect of such arrangement is as follows: by adopting the above scheme, the closing half-shaft is operated to rotate through the closing window 21. The operation mode here can be that a button is pressed to drive a push rod to move, a push plate is arranged on the closing half-shaft, and the push rod abuts against the push plate, thereby driving the closing half-shaft to rotate. After the closing half-shaft rotates to close the switch, the shielding plate 3 is limited by the power connection linkage member 6 to prevent the shielding plate 3 from sliding, so that the operating window 23 overlaps with the operating hole 32, thereby avoiding grounding and isolation in the closed and energized state, and avoiding unnecessary dangers. At the same time, in this state, since the isolation operating shaft 13 is closed, the lock pin limiter limits the lock pin 4 to retract into the cabinet 1, so that the lower door cannot be opened, avoiding the erroneous operation of opening the lower door in the energized state. After the opening half shaft is opened, the operation mode of the opening half shaft here is similar to that of the closing half shaft, and both can be adopted in various forms, which will not be described in detail here. After the opening half shaft is opened, the power-on linkage 6 is reset to release the limit of the baffle plate 3, so that the baffle plate 3 can slide, so that the isolation operating shaft 13 can be operated to open and close. After the gate is opened from the operating shaft 13, the lock pin limiter releases the lock on the sliding of the lock plate 41, so that the lock plate 41 can bounce up under the action of the reset spring 43, so that the lock pin 4 can be retracted into the cabinet 1, so that the lower door can be opened. Here, the lower door of the solid insulation switch cabinet adopts an up and down sliding mode. When the lock pin 4 can be retracted into the cabinet 1, the lower door can be pushed upward without being resisted by the lock pin 4. At the same time, the lock pin 4 is connected to the lower door. After the lower door is opened, the lock plate 41 is driven to move upward, and the lock on the lock plate 41 is The fixed protrusion 43 will block one side of the locking rib 34. When the shielding plate 3 is operated to slide, the locking protrusion 43 will conflict with the locking rib 34, so that the shielding plate 3 cannot slide, and the operating hole 32 and the operating window 23 are prevented from overlapping and operating the isolation operating shaft 13. After the lower door is closed, the locking plate 41 is driven to move downward, so that the locking protrusion 43 is away from the locking rib 34, thereby releasing the lock of the shielding plate 3, and other operations can be performed. This structure is simple, easy to operate, and improves the overall use effect and efficiency. It can also effectively realize the interlocking between the isolation operating shaft 13, the closing half shaft, the opening half shaft and the lower door to ensure the overall safe use.

[0030] An operating spindle 12 is rotatably arranged in the above-mentioned cabinet 1, and the operating spindle 12 is drivingly connected to the closing half-shaft and the opening half-shaft. A rocker arm 121 is connected to the operating spindle 12, and a connecting protrusion 122 is arranged on the rocker arm 121. The power-connecting linkage member 6 is slidingly arranged in the cabinet 1 along the height direction, and a connecting hole 61 is arranged at a position corresponding to the connecting protrusion 122 of the power-connecting linkage member 6. The connecting hole 61 and the connecting protrusion 122 are clearance-matched to form a driving force for the operating spindle 12 to slide on the power-connecting linkage member 6. A power-connecting limit block 62 is also arranged on the power-connecting linkage member 6, and a power-connecting rib 33 is arranged on the side wall of the baffle plate 3. The power-connecting limit block 62 abuts against the power-connecting rib 33 to form a limit on the sliding of the baffle plate 3. The beneficial effect of such arrangement is that, by adopting the above scheme, the operating main shaft 12 in the cabinet 1 is linked with the closing half shaft and the opening half shaft. After the closing half shaft or the opening half shaft rotates, the operating main shaft 12 will be driven to rotate forward or reverse, thereby connecting or disconnecting the power. When closing the switch, the swing rod 121 arranged on the operating main shaft 12 will cooperate with the clearance between the connecting hole 61 and the connecting protrusion 122, and the power connection linkage 6 will be moved in the height direction, so that the power connection limit block 62 on the power connection linkage 6 is moved to the position of the power connection retaining edge 33, thereby being stuck on the side of the power connection retaining edge 33 to limit the shielding. The movement of the baffle plate 3 after the gate is opened, due to the reversal of the operating main shaft 12, drives the rocker rod 121 to move in the opposite direction, thereby driving the power-connecting linkage 6 to move and reset, so that the power-connecting limit block 62 on the power-connecting linkage 6 is away from the power-connecting retaining edge 33, thereby releasing the lock on the sliding of the baffle plate 3, so that the baffle plate 3 can slide to make the operating hole 32 and the operating window 23 coincide with each other, thereby isolating the operation shaft 13. This structure is simple, easy to operate, and simple to debug. After installation, the position of the limit block can be changed and welded according to the displacement to ensure the interference limit effect and improve the use effect of the overall structure.

[0031] The cabinet 1 is also provided with a counter 63, the swing arm of the counter 63 is rotatably connected to the power connection linkage 6, and a counting window 25 is provided on the panel 2 at a position corresponding to the counter 63. The beneficial effect of such a setting is that: by adopting the above scheme, a counter 63 is provided, and its counting swing arm is connected to the power connection linkage 6, and as the limiter slides, the swing arm of the counter 63 is driven to swing, thereby completing the counting operation, and the number of opening and closing of the overall equipment can be recorded conveniently and efficiently, providing data support for subsequent maintenance and repair, and at the same time, the structure is simple, which is conducive to operation observation, and improves the use effect of the overall solution structure.

[0032] A connecting frame 11 is provided in the above-mentioned cabinet 1, and a connecting plate 15 is slidably provided on the connecting frame 11. An isolation main shaft 14 is threadedly fitted on the connecting plate 15. The isolation main shaft 14 is rotatably provided in the cabinet 1 and is transmission-coordinated with the isolation operating shaft 13. The isolation linkage member 7 is slidably provided on the connecting frame 11 along the height direction. A crank arm 74 is swingably connected to the connecting frame 11. One end of the crank arm 74 is connected to a push rod 73, and the other end is connected to the isolation linkage member 7. The connecting plate 15 abuts against the push rod 73 to form a drive for the isolation linkage member 7 to slide on the connecting frame 11. A limiting hook 71 is provided on the isolation linkage member 7 corresponding to the position of the baffle plate 3. An isolation protrusion 35 is provided on the baffle plate 3. The limiting hook 71 abuts against the isolation protrusion 35 to form a limit on the sliding of the baffle plate 3 to expose the closing window 21. A reset component for resetting the isolation linkage member 7 is also connected to the push rod 73. The beneficial effect of such arrangement is as follows: adopting the above scheme, the isolation linkage member 7 is arranged in this way, when operating the isolation operating shaft 13 to open and close the switch, it will drive the isolation main shaft 14 to rotate, and the transmission of the isolation main shaft 14 and the isolation operating shaft 13 can adopt gear transmission, which belongs to the existing technology and will not be described in detail here. The rotation of the main shaft drives the connecting plate 15 threadedly matched with it to slide, thereby completing the opening or closing action. During the sliding process of the connecting plate 15, it will resist the push rod 73, and the push rod 73 slides to push the top crank arm 74, thereby realizing the reversing drive of the force. The isolation linkage 7 slides in the height direction. After the isolation operating shaft 13 completes the opening, the limit hook 71 on the isolation linkage 7 will contact the isolation protrusion 35 on the side wall of the baffle plate 3, thereby limiting the further sliding of the baffle plate 3 to expose the closing window 21. When the isolation operating shaft 13 is closed, the reset assembly will reset the isolation linkage 7, thereby contacting the limit on the sliding of the baffle plate 3, so that the baffle plate 3 can slide to expose the closing window 21 for the closing operation. This structure is simple, easy to operate, and effectively improves the use effect of the overall equipment.

[0033] The above-mentioned reset assembly includes a linkage plate 75 and a reset tension spring 752. The linkage plate 75 is slidably arranged on the connecting frame 11. A hook is arranged at one end of the linkage plate 75 and is hooked on the push rod 73, and a guide groove is arranged at the other end. A guide block 16 is arranged on the connecting frame 11. The guide block 16 and the guide groove slide together to form the sliding of the linkage plate 75 on the connecting frame 11. A reset hook 751 is also arranged on the linkage plate 75, and the reset tension spring 752 is hooked between the guide block 16 and the reset hook 751. The beneficial effect of such a configuration is: by adopting the above-mentioned scheme, through such a reset structure, during the closing process of the sliding assembly of the connecting plate 15, the connecting plate 15 loses its resistance to the push rod 73, so that the linkage plate 75 can be reset under the action of the reset tension spring 752, thereby pulling the push rod 73, driving the crank arm 74 to rotate and reset, thereby driving the isolation linkage member 7 to slide, so that the limit hook 71 no longer conflicts with the second limit plate, so that the shielding plate 3 can slide to expose the closing window 21, and perform the closing operation. This structure is simple, easy to implement, and quick to reset.

[0034] The above-mentioned crank arm 74 is also fixedly connected with an indicator arm 76, and the indicator arm 76 is connected with an indicator sign 761. The panel 2 is provided with a display window 24 at a position corresponding to the indicator sign 761, and the indicator sign 761 is larger than the display window 24. The beneficial effect of such a setting is that: by adopting the above-mentioned scheme, the indicator arm 76 is arranged to rotate synchronously with the crank arm 74, so that the state of the overall switch cabinet after the isolation operation shaft 13 is operated can be timely indicated, and it can be seen more intuitively, thereby improving the overall use effect. Furthermore, the display window 24 is smaller than the indicator sign 761, so that the indicator sign 761 can well shield the display window 24, thereby preventing dirt from entering from the display window 24, thereby improving the protection level of the overall equipment and reaching the protection level of IP4X.

[0035] The locking plate 41 is provided with a positioning groove 42, and a swing seat 51 is provided on the panel 2 at a position corresponding to the positioning groove 42. The locking pin limiting member is a swing plate 5, and the swing plate 5 is swingably provided on the swing seat 51. The upper end of the swing plate 5 is a contact end, and the lower end is a limit end. The limit end of the swing plate 5 contacts the lower edge of the positioning groove 42 to limit the sliding of the locking plate 41. A contact arm 151 extends toward the contact end on the connecting plate 15, and the contact arm 151 contacts the contact end of the swing plate 5 to form a limit end away from the lower edge of the positioning groove 42. A reset torsion spring 52 is provided on the swing seat 51 for resetting the swing plate 5 so that the limit end contacts the lower edge of the positioning groove 42 to limit the sliding of the locking plate 41. The beneficial effect of such arrangement is as follows: by adopting the above scheme, when the isolating operating shaft 13 is in the closed position, the abutment arm 151 on the connecting plate 15 will not abut against the abutment end at this time, so that the swing plate 5 makes the limit end abut against the lower edge of the positioning groove 42 under the action of the reset torsion spring 52, so that the locking plate 41 cannot bounce up under the action of the reset spring 43, so that the locking pin 4 is exposed outside the cabinet 1, so that the lower door cannot be opened, and the danger of opening the lower door when the isolating switch and the grounding switch are in the closed state is avoided. After the opening of the isolating operating shaft 13 is completed, the connecting plate 15 will move forward so that the abutment arm 151 abuts against the abutment end, so that the swing plate 5 will swing, so that the limit end is tilted and away from the lower edge of the positioning groove 42, so that the locking plate 41 can slide under the action of the reset spring 43, so that the locking pin 4 can be immersed in the cabinet 1, and the lock of the lower door is released. This structure is simple, easy to implement, and has a good upper and lower door interlocking effect.

[0036] The shielding plate 3 is provided with an operating handle 36 extending outward from the panel 2, and a sliding groove 26 is provided on the panel 2 along the width direction corresponding to the position of the operating handle 36, and identification protrusions are provided at intervals on the inner wall of the sliding groove 26. The beneficial effect of such a setting is that the operating handle 36 is provided to facilitate the operator to operate, and the identification protrusion is provided at the same time, so that when the handle slides, it can be stuck in the identification protrusion to achieve the positioning of the handle, and it is also convenient for the operator to observe, and this structure is simple and easy to implement.

[0037] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention, such as equivalent products using similar processes and similar structures, are still within the scope covered by the present invention.

Claims

1. A circuit breaker interlocking device for a solid insulated switch cabinet, comprising a cabinet, wherein an opening half-shaft, a closing half-shaft and an isolating operating shaft are rotatably arranged in the cabinet, wherein a panel is arranged on the cabinet, wherein a closing window for operating the closing half-shaft for closing operation, an opening window for operating the opening half-shaft for opening operation and an operating window for operating the isolating operating shaft for opening or closing are arranged on the panel, characterized in that: A baffle is slidably provided on the panel, an operating hole is provided on the baffle corresponding to the position of the operating window, a power connection linkage is provided in the cabinet for limiting the sliding of the baffle so that the operating hole coincides with the operating window after the closing half-axis is closed, the baffle extends toward the closing window to form a baffle, and an isolation linkage is also provided in the cabinet for limiting the baffle from exposing the closing window after the isolation operating shaft is opened, a lock pin for locking the lower door is penetrated by the lower edge of the cabinet, a locking plate is connected to the lock pin, a reset spring is sleeved on the lock pin, the reset spring abuts between the cabinet and the locking plate, and the cabinet is also provided with a lock pin for isolating the operating shaft during operation. The lock pin limiter limits the retraction of the lock pin into the cabinet to open the lower door when the shaft is closed. The locking plate extends toward the baffle plate and is used to limit the sliding of the baffle plate when the lock pin is retracted into the cabinet so that the operating window and the operating hole coincide or expose the closing window. The edge of the baffle plate is formed with a locking rib, and the locking rib abuts against the locking rib to limit the sliding of the baffle plate. An operating spindle is rotatably arranged in the cabinet, and the operating spindle is drivingly connected to the closing half shaft and the opening half shaft. A swing rod is connected to the operating spindle, and a connecting protrusion is arranged on the swing rod. The power-connecting linkage member is slidably arranged in the cabinet along the height direction, and the power-connecting linkage member corresponds to A connecting hole is provided at the connecting protrusion position, and the connecting hole and the connecting protrusion gap cooperate to form a driving force for the operating spindle to connect with the electric linkage member to slide. The electric linkage member is also provided with an electric limit block, and the side wall of the baffle plate is provided with an electric limit edge, and the electric limit block abuts against the electric limit edge to limit the sliding of the baffle plate. A connecting frame is provided in the cabinet, and a connecting plate is slidably provided on the connecting frame. An isolation spindle is threadedly cooperated with the connecting plate, and the isolation spindle is rotatably arranged in the cabinet and cooperated with the isolation operating shaft transmission. The isolation linkage member is slidably arranged on the connecting frame along the height direction, and the swing connection on the connecting frame There is a crank arm, one end of which is connected to a push rod, and the other end is connected to an isolation linkage part. The connecting plate abuts against the push rod to drive the isolation linkage part to slide on the connecting frame. A limit hook is provided on the isolation linkage part corresponding to the position of the baffle plate. An isolation protrusion is provided on the baffle plate. The limit hook abuts against the isolation protrusion to limit the sliding of the baffle plate to expose the closing window. A reset component for resetting the isolation linkage part is also connected to the push rod. An operating handle extends outside the panel of the baffle plate. A sliding groove is provided on the panel along the width direction corresponding to the position of the operating handle, and identification protrusions are provided at intervals on the inner wall of the sliding groove.

2. The circuit breaker interlocking device for solid insulation switch cabinet according to claim 1, characterized in that: A counter is also provided in the cabinet, a swing arm of the counter is rotatably connected to the power connection linkage, and a counting window is provided on the panel at a position corresponding to the counter.

3. The circuit breaker interlocking device for solid insulation switch cabinet according to claim 1, characterized in that: The reset assembly includes a linkage plate and a reset spring. The linkage plate is slidably arranged on the connecting frame. A hook is arranged at one end of the linkage plate and is hooked on the push rod, and a guide groove is arranged at the other end. A guide block is arranged on the connecting frame. The guide block and the guide groove slide together to form the sliding of the linkage plate on the connecting frame. A reset hook is also arranged on the linkage plate, and the reset spring hook is arranged between the guide block and the reset hook.

4. The circuit breaker interlocking device for solid insulation switch cabinet according to claim 3, characterized in that: The crank arm is also fixedly connected with an indicator arm, the indicator arm is connected with an indicator sign, a display window is arranged on the panel at a position corresponding to the indicator sign, and the indicator sign is larger than the display window.

5. The circuit breaker interlocking device for solid insulation switch cabinet according to claim 1, characterized in that: The locking plate is provided with a positioning groove, and a swing seat is arranged on the panel at the position corresponding to the positioning groove. The locking pin limiting member is a swing plate, and the swing plate is swingably arranged on the swing seat. The upper end of the swing plate is a resistance end, and the lower end is a limiting end. The limiting end of the swing plate resists against the lower edge of the positioning groove to form a limit for the sliding of the locking plate. A resistance arm extends toward the resistance end on the connecting plate, and the resistance arm resists against the resistance end of the swing plate to form a limit end away from the lower edge of the positioning groove. A reset torsion spring is arranged on the swing seat for resetting the swing plate so that the limiting end resists against the lower edge of the positioning groove to limit the sliding of the locking plate.

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