Two-position isolation mechanism for 10kV normal pressure sealed air insulation cabinet

Abstract

The application relates to a two-position isolation mechanism for a 10kV normal-pressure sealed air insulation cabinet, and relates to the technical field of air insulation cabinets. The two-position isolation mechanism comprises an isolation operation shaft rotatably arranged on a shell, a lower door interlocking assembly used for linkage with a cabinet door, a limiting piece rotatably arranged on the shell and used for locking or unlocking the cabinet door, and a transmission dial rotatably arranged on the shell and rotationally achieving opening or closing, wherein the transmission dial is connected with the isolation operation shaft and the limiting piece through a connecting assembly I and a connecting assembly II respectively. The size of a shielding piece in the lower door interlocking assembly is redesigned, so that the shielding piece can shield the isolation operation shaft, the risk of continuous operation of the isolation operation shaft after the cabinet door is opened is reduced, the cabinet door cannot be opened after closing, and the cabinet door can be opened after opening, so that the safety and stability of the isolation switch are improved.

Description

Technical Field

[0001] This application relates to the technical field of air-insulated cabinets, and in particular to a two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet. Background Technology

[0002] In high-voltage power transmission and distribution systems, atmospheric pressure sealed air-insulated switchgear is widely used due to its compact structure and high safety. Currently, the mainstream adopts a three-position isolation mechanism (closing, opening, and grounding), but some application scenarios (such as sectional isolation cabinets) only require two-position functions (closing and opening).

[0003] In three-position isolation mechanisms, a lower door interlock device is installed to ensure operational safety. When the grounding switch is engaged and the cabinet door is opened, the lower door interlock device blocks the operating shaft, thus preventing the isolation mechanism from operating. However, in two-position switches, the grounding function is eliminated. Even if the lower door interlock device cannot block the operating shaft, the cabinet door is prone to opening after the isolation switch is closed. Therefore, improving the safety and stability of the isolation switch is an urgent problem to be solved. Summary of the Invention

[0004] To improve the safety and stability of disconnecting switches, this application provides a two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated switchgear.

[0005] This application provides a two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet, which adopts the following technical solution:

[0006] A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated switchgear includes:

[0007] The isolation operating shaft is rotatably mounted on the housing.

[0008] Lower door interlock component, used for linkage with cabinet door;

[0009] The limiting component is rotatably mounted on the housing and is used to lock or unlock the cabinet door;

[0010] A transmission dial is rotatably mounted on the housing and its rotation enables the opening or closing of the circuit. The transmission dial is connected to the isolation operating shaft and the limiting component respectively through connecting component one and connecting component two.

[0011] When the isolation operating shaft rotates to close the circuit, the limiting member rotates to lock the cabinet door. Alternatively, when the isolation operating shaft rotates to open the circuit, the limiting member rotates to unlock the cabinet door. After the cabinet door is opened, the lower door interlock assembly is activated to block and lock the isolation operating shaft. After the cabinet door is closed, the lower door interlock assembly is activated to unlock the isolation operating shaft.

[0012] By adopting the above technical solution, the lower door interlock component is linked with the cabinet door. When the cabinet door is opened, the lower door interlock component is activated to block and lock the isolation operating shaft, so that the isolation operating shaft cannot be operated. When the cabinet door is closed, the cabinet door and the lower door interlock component unlock the isolation operating shaft.

[0013] The rotation of the isolation operation shaft drives the transmission dial to rotate via connecting component one. The rotation of the transmission dial achieves opening or closing of the circuit breaker. At the same time, the rotation of the transmission dial drives the limit component to rotate via connecting component two. When the circuit breaker is closed, the limit component rotates out to lock the cabinet door, preventing the cabinet door from being opened. Alternatively, after the circuit breaker is opened, the limit component rotates to disengage from the cabinet door and unlock, allowing the cabinet door to be opened.

[0014] By redesigning the dimensions of the blocking component in the existing lower door interlock assembly, the blocking component can effectively block the isolating operating shaft, reducing the risk of the isolating operating shaft continuing to operate after the cabinet door is opened. At the same time, the limit component is linked with the isolating operating shaft, ensuring that the cabinet door cannot be opened after closing and can only be opened after opening. This improves the safety and stability of the isolating switch. Furthermore, the two-position isolation structure is located inside the housing and does not change the external dimensions of the housing, making the structure more versatile, simple, practical, and reliable.

[0015] Optionally, the connection component one includes:

[0016] A rotating plate is set on the isolation operating shaft. The transmission dial is provided with a connecting hole, a moving hole, a positioning hole and a limiting groove. The connecting hole, the moving hole and the positioning hole are all arc-shaped and connected to each other at the beginning and end. None of the three are concentric. The housing is provided with a spring mechanism connected to the rotating plate.

[0017] Positioning component one is eccentrically positioned on the rotating plate;

[0018] Positioning component two is disposed on the housing and located on both sides of the transmission dial axis, respectively, along with positioning component one. Positioning component one abuts against the connecting hole under the elastic force of the elastic mechanism, while positioning component two abuts against the limiting groove for positioning. Alternatively, the rotating plate drives positioning component one to rotate and disengages it from the connecting hole, causing positioning component two to disengage from the limiting groove. Positioning component one, driven by the rotating plate, passes through the moving hole until it abuts against the positioning hole under the elastic force of the elastic mechanism for positioning. When positioning component one moves on the moving hole, it drives the transmission dial to rotate and is used to achieve closing or opening of the circuit breaker.

[0019] By adopting the above technical solution, the rotation of the isolating operating shaft drives the rotating plate to rotate. The rotation of the rotating plate drives the positioning component one to disengage from the connecting hole and move into the moving hole. At the same time, the positioning component two disengages from the limiting groove. The positioning component one moves sequentially on the moving hole and the positioning hole until it presses against the positioning hole for positioning, so that the isolating operating shaft can no longer rotate. During the movement of the positioning component one on the moving hole and the positioning hole, it drives the transmission dial to rotate. The rotation of the transmission dial realizes the opening or closing of the circuit breaker. When the isolating operating shaft cannot rotate, it indicates that the closing or opening of the circuit breaker has been completed. This can better achieve positioning during closing or opening. At the same time, the elastic mechanism can position the positioning component one against the connecting hole or the positioning hole under the action of elasticity, thereby further improving the convenience and stability of closing or opening the circuit breaker.

[0020] When a change of state is required, the isolating operating shaft rotates, causing the first positioning component to pass through the positioning hole and then sequentially through the moving hole and connecting hole until the first positioning component abuts against the connecting hole and the second positioning component abuts against the limit groove for positioning. This prevents the isolating operating shaft from rotating further, indicating that the isolating switch has moved into position. It can automatically achieve positioning for the two states without the need for a positioning mechanism, thus improving the safety and stability of the isolating switch and further making the structure simple, practical, and reliable.

[0021] Optionally, the elastic mechanism includes:

[0022] The mounting plate is rotatably mounted on the isolation operating shaft;

[0023] Mounting shaft one and mounting shaft two are mounted on the mounting plate and located on both sides of the isolation operation shaft, respectively. Mounting shaft one is inserted into the mounting plate.

[0024] The elastic component is rotatably mounted on the housing via a rotating column and rotatably connected to the second mounting shaft. The axes of the rotating column, the isolating operating shaft, and the second mounting shaft are parallel. The projection of the line connecting the axes of the rotating column and the isolating operating shaft along the axis of the isolating operating shaft is a reference line. When the first positioning component is pressed against the positioning hole and the moving hole by the elastic force of the elastic component, the second mounting shaft is located on both sides of the reference line.

[0025] By adopting the above technical solution, the rotating plate drives the mounting plate to rotate. The rotating plate rotates under the elastic force of the elastic component, thereby realizing the rotation of mounting shaft one and mounting shaft two. After mounting shaft two rotates, it rotates with the elastic component, so that positioning part one presses against the connection hole or positioning hole under the elastic force of the elastic component for positioning. This can further improve the stability after closing or opening the circuit breaker, and improve the safety and stability of the disconnecting switch.

[0026] Simultaneously, when the positioning component 1 presses against the positioning hole or the moving hole, the mounting shaft 2 is located on one side of the reference line. When the mounting shaft 2 rotates to the point where its axis is on the reference line, the compressive force of the elastic component is at its maximum. This ensures that the force change of the rotating plate is the same during the movement of the positioning component 1 from the positioning hole to the connecting hole. When the rotating plate drives the mounting shaft 2 to rotate, the mounting shaft 2 first compresses the elastic component. When the mounting shaft 2 rotates to the point where its axis is on the reference line, the elastic component experiences the maximum force. As the rotating plate continues to drive the mounting shaft 2 to rotate, the elastic component extends and pushes the mounting shaft 2, the rotating plate, and the positioning component 1 to accelerate their rotation until the positioning component 1 presses against the positioning hole or the moving hole. Therefore, the elastic component can also provide assistance during closing or opening, making it easier to achieve closing or opening, and further improving the safety and stability of the disconnecting switch.

[0027] Optionally, the elastic component includes:

[0028] Connecting column one is installed on the rotating column;

[0029] The second connecting column has a connecting groove that fits into the second mounting shaft.

[0030] Guide tube one and guide tube two are respectively installed on connecting post one and connecting post two and are slidably connected;

[0031] The elastic element is fitted onto guide tube one and guide tube two, with both ends pressing against connecting post one and connecting post two, and under the action of elastic force, positioning element one presses against the positioning hole or moving hole.

[0032] By adopting the above technical solution, the elastic component pushes the connecting groove on the connecting post two to fit tightly against the mounting shaft two, thereby driving the mounting shaft two and the mounting plate to rotate; at the same time, it can also push the connecting post two and the connecting groove to disengage from the mounting shaft two, and then replace the elastic component, further improving the stability of the disconnecting switch.

[0033] Optionally, the elastic mechanism further includes a positioning post disposed on the housing. The mounting plate and the rotating plate are respectively provided with positioning groove one and positioning groove two located on both sides of the positioning post. When the positioning member one abuts against the connecting hole, the positioning groove one abuts against the positioning post for positioning; or, when the positioning member one abuts against the positioning hole, the positioning groove two abuts against the positioning post for positioning.

[0034] By adopting the above technical solution, the rotating plate moves the positioning groove one close to and abuts against the positioning post for positioning, and the rotating plate rotates back to move the positioning groove two close to and abuts against the positioning post for positioning. This allows for the positioning of the rotating plate and the mounting plate, thereby greatly reducing the squeezing force on the connecting holes or positioning holes of the positioning rod pair, reducing the risk of damage to the positioning rod one, improving the stability of the positioning rod one during positioning, and improving the stability of the disconnecting switch.

[0035] Optionally, the positioning element one includes:

[0036] The positioning shaft is set on the rotating plate;

[0037] The stepped roller is rotatably mounted on the positioning shaft and abuts against one of the connecting hole, the moving hole, or the positioning hole.

[0038] By adopting the above technical solution, the stepped roller is rotatably connected to the positioning shaft, which reduces wear and resistance, making the operation more stable and improving the stability of the disconnecting switch.

[0039] Optionally, the second connection component includes:

[0040] The lever is rotatably mounted on the housing, with both ends extending to the side near the transmission dial and the limiting component, respectively.

[0041] The connecting rod, with both ends rotatably mounted on the swing arm and the limiting component;

[0042] The pusher is mounted on the transmission dial;

[0043] An elastic element is disposed on the housing and connected to the swing arm, and tends to move closer to the pusher under the action of elastic force; the pusher rotates closer and pushes the swing arm to rotate, so that the limiting element locks or unlocks the cabinet door.

[0044] By adopting the above technical solution, the elastic element is used to maintain the position of the swing arm, the rotation of the transmission dial drives the pusher to rotate, the pusher rotates and moves closer to push the swing arm to rotate, the rotation of the swing arm pushes the limiter to rotate through the connecting bar, so that when the circuit is closed, the limiter rotates out of the housing and is used to position the cabinet door so that the cabinet door cannot be opened; or, the limiter will rotate into the housing to unlock the cabinet door, and the cabinet door can be opened.

[0045] Optionally, the pusher includes:

[0046] The sleeve is mounted on the transmission dial.

[0047] Two sleeves are respectively installed at both ends of the sleeve;

[0048] The push rod is located on the end of the two sleeves away from the sleeve; the rotation of the transmission dial drives the push rod to approach and rotate the push swing arm.

[0049] By adopting the above technical solution, the transmission dial rotates to drive the sleeve, two sleeves and push rod to rotate. The push rod approaches and pushes the swing arm to rotate, which makes the push component easy to manufacture. Moreover, the push rod has an arc surface, which improves the convenience of pushing the swing arm to rotate and improves the safety and stability of the disconnecting switch.

[0050] Optionally, the housing is provided with a blocking mechanism, the blocking mechanism comprising:

[0051] The dial is mounted on the transmission dial;

[0052] The baffle is rotatably mounted on the housing via a rotating shaft;

[0053] The retaining element is installed on the baffle.

[0054] The push plate is mounted on the retaining element and located between the baffle and the dial plate, and presses against the dial plate under the action of elastic force;

[0055] The stop is mounted on the housing;

[0056] Push the component, set it on the baffle and connect it to the cabinet door;

[0057] When the transmission dial rotates to open the circuit breaker, it drives the dial to rotate and pushes the push plate closer to the isolation operating shaft, increasing the tendency of the baffle to move closer to the isolation operating shaft. When the cabinet door is closed, the baffle is pushed away from the isolation operating shaft by the pushing component to unlock it. After the circuit breaker is opened and the cabinet door is opened, the baffle rotates under the elastic force of the retaining member until it abuts against the stop block for positioning and blocks the isolation operating shaft for locking. When the cabinet door is closed, the baffle is pushed to rotate by the pushing component to unlock the isolation operating shaft.

[0058] By adopting the above technical solution, the lower locking connection component is generally located at the bottom of the housing, which makes the distance between the shielding component in the lower locking connection component and the isolation operating shaft relatively large. This can easily cause the shielding effect on the isolation operating shaft to be at risk, reducing the safety and stability of the disconnecting switch.

[0059] The baffle is located between the isolation operating shaft and the transmission dial, making the baffle closer to the isolation operating shaft. When the cabinet door needs to be opened, the transmission dial rotates to open the brake first. The rotation of the transmission dial drives the actuating plate to push the push plate closer to the isolation operating shaft, increasing the thrust of the retaining component on the baffle. When the cabinet door is opened, the pushing component disengages from the baffle, and the baffle rotates under the elastic force of the retaining component to block the isolation operating shaft, thereby further reducing the risk that the isolation operating shaft can still be operated after the cabinet door is opened.

[0060] After the cabinet door is closed by rotating, the push component pushes the baffle to rotate, causing the baffle to unlock the isolation shaft. After the transmission dial rotates to close the circuit, the dial moves away from the isolation operating shaft, and the push plate continues to press against the dial. This reduces the pushing force of the holding component on the baffle, which in turn reduces the pushing force of the push component on the cabinet door. This makes the structure simpler, more practical, and more reliable, and improves the safety and stability of the disconnect switch.

[0061] Optionally, the pushing component includes:

[0062] Push block one and push block two are respectively set on the baffle and the cabinet door, and each has an inclined and mutually fitting push surface. The two push surfaces are arc-shaped and their axes are located on the axis of the rotating shaft. When the cabinet door is closed, push block two approaches push block one, causing the two push surfaces to fit together and push the baffle to rotate.

[0063] By adopting the above technical solution, when the cabinet door is rotated open, the second drive block moves away from and disengages from the first drive block, thereby causing the baffle to block the isolation operating shaft; when the cabinet door is rotated closed, the second drive block moves closer to the first drive block, so that the two drive surfaces come into contact and push the first drive block back, and the back movement of the first drive block pushes the baffle to rotate, thereby unlocking the isolation operating shaft; at the same time, the drive surfaces are arc-shaped and the axis is located on the axis of rotation, so that the two drive surfaces can still be closely attached to each other for positioning after the baffle rotates, thereby further improving the safety and stability of the isolation switch.

[0064] In summary, this application includes at least one of the following beneficial technical effects:

[0065] 1. By redesigning the dimensions of the blocking component in the lower door interlock assembly, the blocking component can block the isolating operating shaft, reducing the risk of the isolating operating shaft continuing to operate after the cabinet door is opened; at the same time, the limit component is linked with the isolating operating shaft, so that the cabinet door cannot be opened after closing and can only be opened after opening, thereby improving the safety and stability of the isolating switch. Furthermore, the two-position isolation structure is located inside the housing and does not change the outer dimensions of the housing, making the structure more versatile, simple, practical, and reliable.

[0066] 2. Positioning is achieved by pressing the positioning component against the positioning hole, preventing the isolating operating shaft from rotating further. As the positioning component moves between the moving hole and the positioning hole, it drives the transmission dial to rotate. The rotation of the transmission dial realizes the opening or closing of the circuit breaker. It can automatically achieve positioning for both states without the need for a positioning mechanism, which improves the safety and stability of the isolating switch and further makes the structure simple, practical and reliable.

[0067] 3. The elastic component extends and pushes the mounting shaft 2, rotating plate and positioning component 1 to rotate faster until positioning component 1 presses against the positioning hole or moving hole. Therefore, the elastic component can provide assistance when closing or opening the circuit, making it easier to close or open the circuit, and further improving the safety and stability of the disconnecting switch. Attached Figure Description

[0068] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of the two-station isolation mechanism;

[0069] Figure 2 This is a structural schematic diagram of Embodiment 1 of the two-station isolation mechanism, in which the lower door interlock assembly blocks the isolation operation shaft;

[0070] Figure 3 This is a partial structural schematic diagram of Embodiment 1 of the two-station isolation mechanism;

[0071] Figure 4 This is a schematic diagram of the structure of Embodiment 1 of the two-station isolation mechanism, which is in the open state at this time;

[0072] Figure 5 This is a schematic diagram of the structure of Embodiment 1 of the two-station isolation mechanism, which is in the closed state at this time;

[0073] Figure 6 This is a schematic diagram of the pusher component in Embodiment 1 of the two-station isolation mechanism;

[0074] Figure 7 This is a schematic diagram of the blocking mechanism in Embodiment 2 of the two-station isolation mechanism, where the cabinet door is closed at this time;

[0075] Figure 8 This is a schematic diagram of the blocking mechanism in Embodiment 2 of the two-station isolation mechanism. At this time, the cabinet door is open, and a partial cross-section of the baffle is shown.

[0076] Reference numerals: 1. Housing; 11. Isolation operating shaft; 12. Lower door interlock assembly; 13. Limiting component; 15. Blocking component; 16. Rotating shaft; 17. Reference line; 18. Rotating column; 2. Transmission dial; 21. Connecting hole; 22. Moving hole; 23. Positioning hole; 24. Limiting groove; 3. Connecting assembly one; 31. Rotating plate; 32. Positioning component one; 33. Positioning component two; 34. Positioning shaft; 35. Stepped roller; 4. Spring mechanism; 41. Mounting plate; 42. Mounting shaft one; 43. Mounting shaft two; 44. Positioning column; 45. Positioning groove one; 46. 5. Positioning groove 2; 5. Elastic component; 51. Connecting post 1; 52. Connecting post 2; 53. Guide tube 1; 54. Guide tube 2; 55. Elastic component; 56. Connecting groove; 6. Connecting component 2; 61. Swing rod; 62. Connecting bar; 63. Pushing component; 64. Elastic component; 65. Sleeve; 66. Sleeve plate; 67. Push rod; 7. Blocking mechanism; 71. Actuating disc; 72. Baffle; 73. Holding component; 74. Push plate; 75. Stop block; 76. Block; 77. Rotating shaft; 8. Pushing component; 81. Pushing block 1; 82. Pushing block 2; 83. Pushing surface. Detailed Implementation

[0077] The following provides a further detailed description of this application.

[0078] This application discloses a two-station isolation mechanism for a 10kV atmospheric pressure sealed air insulation cabinet.

[0079] Example 1, referring to Figures 1-2A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet includes an isolation operating shaft 11, a lower door interlock assembly 12, a limiting member 13, and a transmission dial 2. The two ends of the isolation operating shaft 11 are rotatably mounted on the housing 1. The lower door interlock assembly 12 is used to link with the cabinet door. The limiting member 13 is rotatably mounted inside the housing 1 and located on one side of the bottom of the housing 1. The transmission dial 2 is rotatably mounted on the housing 1 and its rotation realizes the opening or closing of the switch. The transmission dial 2 is connected to the isolation operating shaft 11 and the limiting member 13 through connecting assembly 3 and connecting assembly 6, respectively. When the isolating operating shaft 11 rotates to close the circuit, the limiting member 13 rotates to the outside of the housing 1 and is inserted into the cabinet door for locking, preventing the cabinet door from opening; or, when the isolating operating shaft 11 rotates to open the circuit, the limiting member 13 rotates to the inside of the housing 1 and is used to unlock the cabinet door; after the cabinet door is opened, the lower door interlock assembly 12 is activated to block and lock the isolating operating shaft 11, preventing the isolating operating shaft 11 from rotating; after the cabinet door is closed, the lower door interlock assembly 12 is activated to unlock the isolating operating shaft 11.

[0080] An operating hole is provided on the cabinet door, which is rotatably mounted on the cabinet body. The lower door interlock assembly 12 is mounted on the cabinet body and is linked with the cabinet door. The lower door interlock assembly 12 is provided with a blocking member 15. When the cabinet door is opened, the blocking member 15 moves upward under the action of elasticity and blocks the isolation operating shaft 11, thus preventing the isolation operating shaft 11 from rotating. When the cabinet door is closed, the blocking member 15 is driven downward to unlock the isolation operating shaft 11, allowing the isolation operating shaft 11 to rotate through the operating hole. The lower door interlock assembly 12 is a structure in the prior art. The lower door interlock assembly 12 is the same as the structure in the three-position unit, except that the size of the blocking member 15 is set according to needs, so that the isolation operating shaft 11 can be locked or unlocked after the cabinet door is opened and closed.

[0081] The bottom of the housing 1 has a clearance hole. The limiting member 13 is rotated through the clearance hole to the outside of the housing 1 and then inserted into the cabinet door to lock the cabinet door and prevent it from being opened. Alternatively, the limiting member 13 can be rotated into the housing 1 and disengaged from the cabinet door to unlock the cabinet door and allow it to be opened.

[0082] Reference Figure 1 , Figure 3The connecting component 3 includes a rotating plate 31, a positioning element 32, and a positioning element 33. The rotating plate 31 is mounted on the isolation operating shaft 11. The transmission dial 2 is rotatably mounted on the housing 1 via a rotating shaft 16. The rotating shaft 16 is coaxial with the transmission dial 2 and its axis is parallel to the axis of the isolation operating shaft 11. The transmission dial 2 has a connecting hole 21, a moving hole 22, a positioning hole 23, and a limiting groove 24. The connecting hole 21, the moving hole 22, and the positioning hole 23 are all arc-shaped and interconnected, and none of them are concentric. The connecting hole 21, the moving hole 22, and the positioning hole 23 are arranged radially at intervals along the transmission dial 2. The positioning element 32 is eccentrically fixed on the side wall of the rotating plate 31, and the positioning element 33 is fixedly mounted on the housing 1 and is located on both sides of the axis of the transmission dial 2, respectively.

[0083] The clockwise rotation of the isolation operating shaft 11 drives the rotating plate 31 to rotate clockwise. The rotation of the rotating plate 31 drives the positioning element 32 to rotate around the axis of the isolation operating shaft 11, so that the positioning element 32 abuts against the connecting hole 21 and is located at the connection between the connecting hole 21 and the moving hole 22. At the same time, the positioning element 33 abuts against the limiting groove 24 for positioning. At this time, the rotating plate 31 cannot continue to rotate and is in the open state. Alternatively, when it is necessary to close the circuit, the rotating plate 31 drives the positioning element 32 to disengage from the connecting hole 21 and causes the positioning element 33 to disengage from the limiting groove 24. Then, the positioning element 32 moves to the moving hole 22 until it moves to the positioning hole 23 and abuts against the positioning hole 23 for positioning. At this time, the rotating plate 31 cannot continue to rotate. The outer diameter of the positioning element 32 is the same as the width of the moving hole 22. When the positioning element 32 moves on the moving hole 22, it drives the transmission dial 2 to rotate, so that it changes from the open state to the closed state.

[0084] When it is necessary to open the circuit breaker, the rotating plate 31 rotates, causing the positioning element 32 to rotate and abut against the connecting hole 21 for positioning, and causing the limiting groove 24 to approach and abut against the positioning element 33 for positioning. At this time, the rotating plate 31 cannot continue to rotate and is in the open state. Opening or closing the circuit breaker can be achieved by rotating the rotating plate 31.

[0085] Positioning component 1 32 and positioning component 2 33 have the same structure. The following explanation will take positioning component 1 32 as an example. Positioning component 1 32 includes a positioning shaft 34 and a stepped roller 35. The positioning shaft 34 is fixedly installed on the rotating plate 31 and is in a horizontal state. The stepped roller 35 is rotatably installed on the positioning shaft 34. The stepped roller 35 abuts against the connecting hole 21 or the positioning hole 23 for positioning. The other stepped roller 35 abuts against the limiting groove 24 for positioning. When the stepped roller 35 moves on the moving hole 22, the stepped roller 35 is rotatably installed on the positioning shaft 34, which reduces the resistance during the rotation of the rotating plate 31 and the transmission dial 2.

[0086] Reference Figure 1 , Figures 3-5The housing 1 is provided with a spring mechanism 4 connected to the rotating plate 31. Positioning component 32 abuts against the connecting hole 21 under the elastic force of the spring mechanism 4 and positioning component 33 abuts against the limiting groove 24 for positioning; or, positioning component 32 abuts against the positioning hole 23 under the elastic force of the spring mechanism 4 for positioning, thereby realizing positioning when closing or opening the circuit and improving stability when closing or opening the circuit.

[0087] The elastic mechanism 4 includes a mounting plate 41, a first mounting shaft 42 and a second mounting shaft 43, and an elastic component 5. The mounting plate 41 is rotatably mounted on the isolation rotating shaft 16, and two mounting plates 41 are spaced apart along the axis of the isolation operating shaft 11. The first mounting shaft 42 and the second mounting shaft 43 are fixedly mounted on the opposite side wall of the two mounting plates 41 and located on both sides of the axis of the isolation operating shaft 11, that is, the first mounting shaft 42 and the second mounting shaft 43 are respectively located on both sides of the axis of the isolation operating shaft 11, close to or far away from the transmission dial 2. The rotating plate 31 has a mounting groove, and the second mounting shaft 43 is inserted into the mounting groove so that the mounting plate 41 and the rotating plate 31 rotate simultaneously.

[0088] The elastic component 5 is rotatably mounted on the housing 1 via the rotating column 18 and rotatably connected to the mounting shaft 43. The axes of the rotating column 18, the isolation operation shaft 11, and the mounting shaft 43 are parallel. The projection of the line connecting the axes of the rotating column 18 and the isolation operation shaft 11 along the axis of the isolation operation shaft 11 is the reference line 17. Here, the same plane is a vertical plane. When the positioning component 32 presses against the positioning hole 23 and the moving hole 22, the mounting shaft 43 is located on both sides of the reference line 17, so that the axis of the mounting shaft 43 is misaligned with the reference line 17.

[0089] When the axis of the second mounting shaft 43 is located on the reference line 17, the length of the elastic component 5 is at its minimum. During the process of the rotating plate 31 rotating to realize the switching between the two states of opening and closing, the axis of the second mounting shaft 43 moves from one side of the reference line 17 to the other side. This allows the elastic component 5 to generate a thrust that pushes the positioning part 32 closer to either the connecting hole 21 or the positioning hole 23, regardless of whether the positioning part 32 is close to either of them. This provides assistance when closing or opening the circuit, making it easier and faster to achieve closing or opening, and also improving the stability after closing or opening the circuit. In other words, it improves the convenience and stability of closing or opening the circuit.

[0090] The elastic component 5 includes a first connecting post 51, a second connecting post 52, a first guide tube 53 and a second guide tube 54, and an elastic element 55. The first connecting post 51 is fixedly installed on the rotating post 18. The second connecting post 52 is located on the side near the second mounting shaft 43 and has a connecting groove 56 that fits with the second mounting shaft 43 at the end near the second mounting shaft 43. The first guide tube 53 and the second guide tube 54 are fixedly installed on the opposite ends of the first connecting post 51 and the second connecting post 52, and the axes of the first guide tube 53 and the second guide tube 54 coincide and slide to each other. The elastic element 55 is a spring, which is sleeved on the first guide tube 53 and the second guide tube 54 and presses against the opposite ends of the first connecting post 51 and the second connecting post 52 at both ends.

[0091] The elastic mechanism 4 also includes a positioning post 44, which is fixedly installed on the housing 1. Positioning groove 45 and positioning groove 46 are respectively opened on the opposite side walls of the mounting plate 41 and the rotating plate 31. Positioning groove 45 and positioning groove 46 are located on both sides of the positioning post 44. When the positioning member 32 abuts against the connecting hole 21, positioning groove 45 abuts against the positioning post 44 for positioning; or, when the positioning member 32 abuts against the positioning hole 23, positioning groove 46 abuts against the positioning post 44 for positioning, thereby reducing the squeezing force on the connecting hole 21 or the positioning hole 23 under the elastic force of the elastic component 5.

[0092] Reference Figures 4-6 The connecting component 6 includes a rocker arm 61, a connecting bar 62, a pusher 63, and an elastic element 64. The rocker arm 61 is rotatably mounted on the housing 1, with both ends extending to the side near the transmission dial 2 and the limiting member 13, respectively. The two ends of the connecting bar 62 are rotatably connected to the end of the rocker arm 61 near the limiting member 13 and the limiting member 13, respectively. The rotation of the rocker arm 61 drives the limiting member 13 to rotate through the connecting bar 62. The pusher 63 is disposed on the rotating shaft 16 and includes a sleeve 65, two sleeve pieces 66, and a pusher rod 67. The sleeve 65 is sleeved on the rotating shaft 16 and rotates simultaneously. The two sleeve pieces 66 are fixedly mounted at intervals along the axis of the transmission dial 2 on both ends of the sleeve 65. The pusher rod 67 is fixedly mounted on the side wall of the two sleeve pieces 66 away from the sleeve 65 and located on the opposite side. The elastic element 64 is a spring, with both ends fixedly mounted on the housing 1 and the side wall of the rocker arm 61 near the rotating shaft 16.

[0093] When the circuit is closed, the transmission dial 2 rotates, driving the rotating shaft 16 to rotate. The rotating shaft 16 drives the push rod 67 to approach and push the swing rod 61 to rotate. The rotation of the swing rod 61 drives the limiting member 13 to rotate through the connecting bar 62, so that the limiting member 13 rotates to the outside of the housing 1 and engages with the cabinet door, thereby locking the cabinet door and preventing it from being opened. When the circuit is opened, the transmission dial 2 rotates, driving the push rod 67 away from the swing rod 61. The swing rod 61 rotates under the elastic force of the elastic member 64, so that the limiting member 13 rotates into the housing 1, thereby unlocking the cabinet door.

[0094] The working principle of this application embodiment is as follows:

[0095] When closing the circuit breaker is required, the isolating operating shaft 11 rotates to drive the positioning component 32 to disengage from the connecting hole 21, and the positioning component 33 to disengage from the limiting groove 24. The positioning component then abuts against the positioning hole 23 after passing through the moving hole 22 for positioning, thereby driving the transmission dial 2 to rotate to achieve closing the circuit breaker. At the same time, the rotation of the transmission dial 2 drives the limiting component 13 to rotate to the outside of the housing 1 and insert into the cabinet door, so that the cabinet door cannot be opened after closing the circuit breaker. When opening the circuit breaker is required, the isolating operating shaft 11 rotates to drive the positioning component 32 to abut against the connecting hole 21 after passing through the moving hole 22 for positioning, and the positioning component 33 abuts against the limiting groove 24 for positioning, thereby driving the transmission dial 2 to rotate to achieve opening the circuit breaker. At the same time, the rotation of the transmission dial 2 drives the limiting component 13 to rotate to the inside of the housing 1 and disengage from the cabinet door, thereby unlocking the cabinet door.

[0096] After the cabinet door can be opened, the lower door interlock component 12 moves close to the isolating operating shaft 11 and blocks the isolating operating shaft 11, so the isolating operating shaft 11 cannot be driven; after the cabinet door is closed, the lower door interlock component 12 moves away from the isolating operating shaft 11 and unlocks, and then the isolating operating shaft 11 can be rotated through the operating hole, thereby improving the safety and stability of the isolating switch.

[0097] Example 2, refer to Figure 2 , Figures 7-8 The difference between this embodiment and embodiment 1 is that a blocking mechanism 7 is provided on the housing 1. The blocking mechanism 7 is connected to the cabinet door. When the cabinet door is opened, the blocking mechanism 7 rotates under the action of elasticity and is used to block and lock the isolation operation shaft 11. When the cabinet door is closed, the blocking mechanism 7 rotates to unlock the isolation operation shaft 11.

[0098] The blocking mechanism 7 includes a dial 71, a baffle 72, a retainer 73, a pusher 74, a stop 75, and a push assembly 8. The rotating shaft 16 extends to the outside of the housing 1. The dial 71 is fixedly mounted on the rotating shaft 16 and is located outside the housing 1 in an elliptical shape. The distances between the two ends of the dial 71 and the axis of the transmission dial 2 are different. The baffle 72 is rotatably mounted on the housing 1 via a rotating shaft 77 and is located between the dial 71 and the isolation operation shaft 11. The axes of the rotating shaft 77 and the isolation operation shaft 11 coincide. At the same time, the baffle 72 is located outside the blocking member 15. The rotation of the baffle 72 and the movement of the blocking member 15 do not interfere with each other. The retainer 73 is a spring or a spring sheet. The retainer 73 is fixedly mounted on the side wall of the baffle 72, and the other end of the retainer 73 extends to the side close to the dial 71.

[0099] The push plate 74 is fixedly mounted on the end of the retaining member 73 away from the baffle 72, and the push plate 74 is slidably disposed on the housing 1 in the direction of approaching or moving away from the dial 71. The push plate 74 is pressed against the dial 71 by the elastic force of the retaining member 73. The stop block 75 is fixedly mounted on the housing 1, and a block 76 is provided on the baffle 72. The stop block 75 is located between the block 76 and the isolation operating shaft 11. The retaining member 73 drives the block 76 to maintain a tendency to approach the stop block 75.

[0100] The push assembly 8 is mounted on the baffle 72 and connected to the cabinet door. When the cabinet door is closed, the push assembly 8 pushes the baffle 72 to rotate, thereby unlocking the isolation operating shaft 11. When the cabinet door needs to be opened, the transmission dial 2 rotates first to open the gate. The transmission dial 2 drives the dial plate 71 to rotate via the rotating shaft 16. The rotating dial plate 71 pushes the push plate 74 closer to the isolation operating shaft 11. The push plate 74 increases the pushing force on the baffle 72 through the retaining member 73. When the cabinet door is opened, the baffle 72 approaches the isolation operating shaft 11 under the action of the retaining member 73, so that the baffle 72 blocks the isolation operating shaft 11. At the same time, the baffle 72 rotates and drives the block 76 to abut against the stop block 75 for positioning, so that even if the blocking member 15 fails to block the isolation operating shaft 11, it can still block and lock the isolation operating shaft 11. When the cabinet door is closed, the push assembly 8 pushes the baffle 72 to rotate, thereby unlocking the isolation operating shaft 11 and enabling operation of the isolation operating shaft 11.

[0101] The pushing assembly 8 includes a first pushing block 81 and a second pushing block 82. The first pushing block 81 and the second pushing block 82 are respectively fixedly installed on the baffle 72 and the opposite side walls of the cabinet door. The first pushing block 81 and the second pushing block 82 each have an inclined and closely attached pushing surface 83 at their opposite ends. The pushing surface 83 is also arc-shaped and its center is located on the axis of the rotating shaft 77, so that the two pushing surfaces 83 can still be closely attached after the first pushing block 81 rotates with the baffle 72. After the cabinet door is opened, the second pushing block 82 moves away from the first pushing block 81. The baffle 72 rotates under the elastic force of the retaining member 73 and blocks the isolation operating shaft 11. After the cabinet door is rotated and closed, the second pushing block 82 moves closer to the first pushing block 81, so that the two pushing surfaces 83 are closely attached to each other and push the baffle 72 to rotate, exposing the isolation operating shaft 11, thereby unlocking the isolation operating shaft 11.

[0102] The working principle of this application embodiment is as follows:

[0103] When the cabinet door is closed, it pushes the baffle 72 to unlock the isolating operating shaft 11. When the cabinet door needs to be opened, the transmission dial 2 rotates first to open the circuit breaker. The transmission dial 2 drives the actuation disk 71 to rotate, and the rotation of the actuation disk 71 increases the pushing force on the baffle 72. When the cabinet door is opened, the baffle 72 rotates under the action of the holding member 73 and blocks the isolating operating shaft 11. At the same time, the block 76 abuts against the stop block 75 for positioning, so that even if the blocking member 15 fails to block the isolating operating shaft 11, it can still block and lock the isolating operating shaft 11. When the cabinet door is closed, the baffle 72 rotates back, thereby unlocking the isolating operating shaft 11 and enabling operation of the isolating operating shaft 11, thereby further improving the safety and stability of the isolating switch.

[0104] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated switchgear, characterized in that: include: The isolation operating shaft (11) is rotatably mounted on the housing (1); Lower door interlock assembly (12) is used to link with the cabinet door; The limiting component (13) is rotatably mounted on the housing (1) and is used to lock or unlock the cabinet door; The transmission dial (2) is rotatably mounted on the housing (1) and rotates to open or close the circuit. The transmission dial (2) is connected to the isolation operating shaft (11) and the limiting member (13) respectively through the connecting component one (3) and the connecting component two (6). When the isolation operating shaft (11) rotates to achieve closing, the limiting member (13) rotates to lock the cabinet door; or, when the isolation operating shaft (11) rotates to achieve opening, the limiting member (13) rotates to unlock the cabinet door. After the cabinet door is opened, the lower door interlock assembly (12) is activated to block and lock the isolation operating shaft (11). After the cabinet door is closed, the lower door interlock assembly (12) is activated to unlock the isolation operating shaft (11). The housing (1) is provided with a blocking mechanism (7), the blocking mechanism (7) comprising: A dial (71) is mounted on a transmission dial (2); A baffle (72) is rotatably mounted on the housing (1) via a rotating shaft (77); A retainer (73) is provided on the baffle (72); The push plate (74) is disposed on the retainer (73) and located between the baffle (72) and the dial plate (71), and presses against the dial plate (71) under the action of elastic force; A stop (75) is provided on the housing (1); Push the component (8), set it on the baffle (72) and connect it to the cabinet door; When the transmission dial (2) rotates to open the circuit breaker, it drives the dial (71) to rotate and pushes the push plate (74) closer to the isolation operating shaft (11), increasing the tendency of the baffle (72) to approach the isolation operating shaft (11). When the cabinet door is closed, the baffle (72) is pushed away from the isolation operating shaft (11) by the push assembly (8) to unlock it. After the circuit breaker is opened and the cabinet door is opened, the baffle (72) rotates under the elastic force of the retaining member (73) until it abuts against the stop block (75) for positioning and blocks the isolation operating shaft (11) for locking. When the cabinet door is closed, the baffle (72) is pushed back by the push assembly (8) to unlock the isolation operating shaft (11).

2. The two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet according to claim 1, characterized in that: The first connection component (3) includes: A rotating plate (31) is set on the isolation operating shaft (11). The transmission dial (2) is provided with a connecting hole (21), a moving hole (22), a positioning hole (23) and a limiting groove (24). The connecting hole (21), the moving hole (22) and the positioning hole (23) are all arc-shaped and connected to each other. The three are not concentric. The housing (1) is provided with a spring mechanism (4) connected to the rotating plate (31). Positioning component 1 (32) is eccentrically set on the rotating plate (31); Positioning component 2 (33) is set on the housing (1) and is located on both sides of the axis of the transmission dial (2) along with positioning component 1 (32); positioning component 1 (32) abuts against the connecting hole (21) under the elastic force of the elastic mechanism (4) and positioning component 2 (33) abuts against the limiting groove (24) for positioning; or, the rotating plate (31) drives positioning component 1 (32) to rotate and then disengages from the connecting hole (21) and causes positioning component 2 (33) to disengage from the limiting groove (24); positioning component 1 (32) passes through the moving hole (22) under the driving action of the rotating plate (31) and until it abuts against the positioning hole (23) under the elastic force of the elastic mechanism (4) for positioning; when positioning component 1 (32) moves on the moving hole (22), it drives the transmission dial (2) to rotate and is used to realize the closing or opening of the circuit.

3. A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet according to claim 2, characterized in that: The elastic mechanism (4) includes: Mounting plate (41) is rotatably mounted on isolation operating shaft (11); Mounting shaft one (42) and mounting shaft two (43) are mounted on mounting plate (41) and located on both sides of the isolation operation shaft (11), respectively. Mounting shaft one (42) is inserted into mounting plate (41); The elastic component (5) is rotatably mounted on the housing (1) via the rotating column (18) and rotatably connected to the mounting shaft (43); the axes of the rotating column (18), the isolation operation shaft (11) and the mounting shaft (43) are parallel, and the projection of the line connecting the axes of the rotating column (18) and the isolation operation shaft (11) along the axis of the isolation operation shaft (11) is the reference line (17). When the positioning component (32) is pressed against the positioning hole (23) and the moving hole (22) by the elastic force of the elastic component (5), the mounting shaft (43) is located on both sides of the reference line (17).

4. A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet according to claim 3, characterized in that: The elastic component (5) includes: Connecting column 1 (51) is set on rotating column (18); The second connecting column (52) has a connecting groove (56) that fits into the second mounting shaft (43); Guide tube one (53) and guide tube two (54) are respectively set on connecting post one (51) and connecting post two (52) and are slidably connected; The elastic element (64) is fitted onto the guide tube 1 (53) and the guide tube 2 (54) and its two ends press against the connecting post 1 (51) and the connecting post 2 (52) and under the action of elastic force, the positioning element 1 (32) presses against the positioning hole (23) or the moving hole (22).

5. A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet according to claim 3, characterized in that: The elastic mechanism (4) also includes a positioning post (44) disposed on the housing (1). The mounting plate (41) and the rotating plate (31) are respectively provided with positioning groove one (45) and positioning groove two (46) located on both sides of the positioning post (44). When the positioning member one (32) abuts against the connecting hole (21), the positioning groove one (45) abuts against the positioning post (44) for positioning; or, when the positioning member one (32) abuts against the positioning hole (23), the positioning groove two (46) abuts against the positioning post (44) for positioning.

6. A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet according to claim 2, characterized in that: The positioning element one (32) includes: The positioning shaft (34) is set on the rotating plate (31); The stepped roller (35) is rotatably mounted on the positioning shaft (34) and abuts against one of the connecting hole (21), the moving hole (22), or the positioning hole (23).

7. A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet according to claim 1, characterized in that: The second connection component (6) includes: The lever (61) is rotatably mounted on the housing (1) and its two ends extend to the side close to the transmission dial (2) and the limiting member (13), respectively; The connecting bar (62) is rotatably mounted on the swing arm (61) and the limiting member (13) at both ends; A pusher (63) is mounted on the transmission dial (2); An elastic element (64) is disposed on the housing (1) and connected to the swing arm (61) and tends to move closer to the pusher (63) under the action of elastic force; the pusher (63) rotates closer and pushes the swing arm (61) to rotate, so that the limiting element (13) locks or unlocks the cabinet door.

8. A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet according to claim 7, characterized in that: The pusher (63) includes: A sleeve (65) is mounted on the transmission dial (2); Two sleeves (66) are respectively set on both ends of the sleeve (65); The push rod (67) is located on the end of the two sleeves (66) away from the sleeve (65); the transmission dial (2) rotates to drive the push rod (67) to rotate close to the push lever (61).

9. A two-position isolation mechanism for a 10kV atmospheric pressure sealed air-insulated cabinet according to claim 1, characterized in that: The actuating component (8) includes: Push block one (81) and push block two (82) are respectively set on the baffle (72) and the cabinet door, and each has an inclined and mutually close push surface (83). The two push surfaces (83) are arc-shaped and their axes are located on the axis of the rotating shaft (77). When the cabinet door is closed, push block two (82) approaches push block one (81) and causes the two push surfaces (83) to come into contact and push the baffle (72) to rotate.

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