Isolation-circuit-breaking interlock mechanism for longitudinal-rotation circuit breaker operating mechanism

Abstract

The present invention relates to an isolating-circuit-breaking interlocking mechanism for a longitudinally rotating circuit breaker operating mechanism, comprising a housing in which a circuit breaker mechanism and an isolating mechanism are mounted. The main shaft of the circuit breaker mechanism is arranged in a left-right direction, and the isolating operating shaft of the isolating mechanism is arranged in a front-back direction, with the front end of the isolating operating shaft forming a handle connecting section. A first interlocking mechanism has a trigger end located in front of the isolating operating shaft, and a locking end adapted to cooperate with a closing bend of the circuit breaker mechanism. When the operating handle is connected to the handle connecting section, the operating handle pushes the trigger end, thereby causing the locking end to lock the closing bend, thereby restricting the circuit breaker mechanism from closing. The first interlocking mechanism ensures that the circuit breaker cannot be closed when the isolating mechanism is manually operated, thereby ensuring that the operating mechanism can safely operate the longitudinally rotating, functionally composite vacuum isolating circuit breaker.

Description

Technical Field

[0001] The present invention relates to the field of high-voltage switchgear operating mechanisms, and in particular to an isolation-disconnection interlocking mechanism for a longitudinal rotation type circuit breaker operating mechanism. Background Art

[0002] The longitudinal rotation vacuum isolation circuit breaker is a circuit breaker with a completely new structure. Referring to the prior patent, patent number: 200610104877.0, patent name: longitudinal rotation functional composite vacuum isolation circuit breaker, its working principle is mainly to install three-phase poles on the longitudinal beam, and then rotate the longitudinal beam 90 degrees forward and reverse, driving the poles to rotate horizontally and vertically, so that the upper and lower isolating moving contacts and static contacts are isolated or connected to the main circuit (when the poles rotate to the horizontal direction, the circuit breaker is in isolation and opening, and when the poles rotate to the vertical direction, the circuit breaker is connected and closed); a connecting rod is installed in the longitudinal beam, and the connecting rod moves forward and backward in the longitudinal beam to close and open the circuit breaker.

[0003] For this new longitudinal rotation vacuum isolating circuit breaker, an operating mechanism adapted thereto is required to control the rotation of the longitudinal beam and the translation of the connecting rod. The operating mechanism is described in the prior patent, patent number: 201220270353.X, patent name: Four-position integrated operating mechanism for high-voltage vacuum isolating circuit breaker. The operating mechanism includes a circuit breaker mechanism and an isolation mechanism. The circuit breaker mechanism is connected to the connecting rod and is used to control the translation of the connecting rod, that is, to control the closing and opening of the longitudinal rotation vacuum isolating circuit breaker. The isolation mechanism is connected to the longitudinal beam and is used to control the horizontal and vertical rotation of the longitudinal beam, that is, to control the isolation or connection of the main circuit of the longitudinal rotation vacuum isolating circuit breaker.

[0004] For the safe operation of the vertical rotary vacuum isolating circuit breaker, the following conditions must be met during operation:

[0005] 1. When the control link of the circuit breaker mechanism in the operating mechanism moves horizontally to put the vacuum isolation circuit breaker in the on state, the isolation mechanism in the operating mechanism can no longer switch the longitudinal beam from closing to opening, that is, the longitudinal beam changes from vertical to horizontal;

[0006] 2. When the isolation mechanism in the operating mechanism rotates the longitudinal beam from horizontal to vertical (assuming it is only rotated to 45 degrees), the circuit breaker mechanism in the operating mechanism cannot control the movement of the connecting rod to connect the circuit.

[0007] The integration of two mechanisms in the operating mechanism can realize both circuit breaker function and isolation function. To ensure the safety of the vertical rotary vacuum isolating circuit breaker and to ensure that the operating mechanism can safely operate the vertical rotary vacuum isolating circuit breaker, it is necessary to add an interlock design to the operating mechanism that cooperates with it. The interlock design needs to match the above two requirements of the vertical rotary vacuum isolating circuit breaker. Therefore, the interlock design in the operating mechanism needs to meet the following two safety requirements:

[0008] 1. When the isolation mechanism needs to be manually operated, it is necessary to ensure that the circuit breaker cannot be closed. Secondly, after the circuit breaker completes the closing operation, the isolation mechanism can no longer be manually operated.

[0009] 2. When the isolation mechanism is in the open or closed position, the circuit breaker can be closed. However, when the isolation mechanism switches from open to closed, the circuit breaker mechanism needs to be locked. The circuit breaker mechanism cannot be closed before the isolation mechanism. The circuit breaker mechanism can only be closed after the isolation mechanism is fully closed. Otherwise, an accident will occur.

[0010] In the current longitudinal rotation circuit breaker operating mechanism, the circuit breaker is not interlocked when the isolation mechanism is manually operated, and the isolation mechanism is not interlocked when the circuit breaker is closed, resulting in a low safety factor of the entire operating mechanism. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an isolation-disconnection interlocking mechanism for a longitudinally rotating circuit breaker operating mechanism, so as to solve the problem that in the current longitudinally rotating circuit breaker operating mechanism, the circuit breaker is not interlocked when the isolation mechanism is manually operated and the isolation mechanism is not interlocked when the circuit breaker is closed, resulting in a low safety factor of the entire operating mechanism.

[0012] The technical solution adopted by the present invention to solve its technical problem is:

[0013] Provided is an isolation-disconnection interlocking mechanism for a longitudinal rotation type circuit breaker operating mechanism, comprising

[0014] a housing, wherein a circuit breaker mechanism and an isolation mechanism are mounted in the housing, wherein a main axis of the circuit breaker mechanism is arranged in a left-right direction, and an isolation operating axis of the isolation mechanism is arranged in a front-back direction, and a front end of the isolation operating axis forms a handle connecting section;

[0015] A first interlocking mechanism, whose triggering end is located on the front side of the isolation operating shaft and whose locking end is suitable for cooperating with the closing bent plate of the circuit breaker mechanism;

[0016] When the operating handle is connected to the handle connecting section, the operating handle pushes the trigger end to operate, thereby causing the locking end to lock the closing bent plate to restrict the circuit breaker mechanism from closing.

[0017] Furthermore, the first interlocking mechanism includes

[0018] A half-shaft, on which a trigger plate and a shift lever are provided, wherein the trigger plate is located in front of the isolation operating shaft, and the half-shaft is elastically rotatable within the housing to drive the trigger plate and the shift lever to swing in a front-to-back direction;

[0019] A push plate is elastically slidable forward and backward within the housing, with its front end abutting against the lever and its rear end forming a horizontal inclined push surface;

[0020] The lock plate is arranged in a left-right direction, with its center being rotatably connected to the housing so as to allow it to elastically rotate up and down within the housing. A roller that cooperates with the horizontal inclined push surface is mounted on its right end, and its left end forms a locking end.

[0021] When the operating handle is connected to the isolation operating shaft, the operating handle pushes the trigger plate, half shaft and the shift rod to rotate, and the shift rod pushes the push plate to translate backward, thereby driving the lock plate to rotate counterclockwise, so that the locking end blocks the closing bent plate.

[0022] Furthermore, a baffle is provided in the housing, the baffle is vertically elastically provided in the housing, the baffle is located in front of the trigger plate, and a handle through-hole is provided on the baffle;

[0023] When the baffle moves to the lower working position, the handle perforation corresponds to the front and rear of the trigger plate, so that the operating handle passing through can push the trigger plate.

[0024] Furthermore, a second interlocking mechanism is provided between the main shaft and the isolation mechanism, and the second interlocking mechanism includes

[0025] A cam is fixedly arranged on the main shaft;

[0026] The slide plate is elastically arranged vertically in the housing, with its lower section abutting against the cam and its upper end being adapted to engage with the push plate, and a locking protrusion is provided on the slide plate;

[0027] A micro switch, wherein the micro switch is suitable for controlling the power on and off of the isolation motor;

[0028] When the circuit breaker mechanism drives the main shaft to rotate to the closing position, the slide is driven to lift upward, and the upper end of the slide engages the push plate to limit the push plate from moving forward. The locking protrusion triggers the micro switch to cut off the power to the isolation motor.

[0029] The beneficial effects of the present invention are:

[0030] The longitudinal rotation type circuit breaker operating mechanism of the present invention uses an isolation-circuit breaking interlocking mechanism, which ensures that the circuit breaker cannot be closed when the isolation mechanism is manually operated through the first interlocking mechanism, thereby ensuring that the operating mechanism can safely operate the longitudinal rotation type functional composite vacuum isolation circuit breaker.

[0031] The second interlock ensures that the isolation mechanism cannot perform opening and closing operations when the circuit breaker mechanism is in the closed state, ensuring that the operating mechanism can safely operate the longitudinal rotation type functional composite vacuum isolation circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] Figures 1 to 3 It is a schematic diagram of the isolation-circuit breaking interlock mechanism for the operating mechanism of the longitudinal rotation type circuit breaker of the present invention;

[0034] Figure 4 and Figure 5 is a schematic diagram of the first interlocking mechanism and the second interlocking mechanism;

[0035] Figure 6 It is the coordination diagram between the push plate and the lock plate;

[0036] Figure 7 This is a structural diagram between the main shaft and the connecting cylinder in the circuit breaker mechanism;

[0037] Among them, 1. circuit breaker mechanism, 11. closing bend plate, 12. main shaft, 13. first connecting rod, 14. second connecting rod, 15. connecting cylinder;

[0038] 2. Isolation mechanism, 21. Isolation operating shaft, 22. Screw, 23. Nut, 24. Swing seat, 25. Isolation motor;

[0039] 3. First interlocking mechanism, 31. Axle shaft, 32. Trigger plate, 33. Lever, 34. Push plate, 35. Lock plate, 351. Roller, 36. Operating handle, 37. Baffle;

[0040] 4. Second interlocking mechanism, 41. Cam, 42. Slide plate, 421. Snap-on cam, 422. Micro switch. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] like Figures 1 to 3 A longitudinally rotating circuit breaker operating mechanism includes a housing in which a circuit breaker mechanism 1 and an isolating mechanism 2 are mounted. The circuit breaker mechanism 1 is used to control the translational movement of a connecting rod in a longitudinally rotating, functionally complex vacuum isolating circuit breaker (see prior patent). The opening and closing of the circuit breaker mechanism 1 drives the connecting rod to perform opening and closing operations in the vacuum isolating circuit breaker. The isolating mechanism 2 is used to connect to the longitudinal beam in the longitudinally rotating, functionally complex vacuum isolating circuit breaker and control the horizontal and vertical rotation of the longitudinal beam, enabling the longitudinal beam to perform opening and closing operations in the vacuum isolating circuit breaker.

[0043] like Figure 7As shown, the principle of the circuit breaker mechanism 1 driving the connecting rod to move in translation is as follows: it includes a swing arm, a first connecting rod 13 and a second connecting rod 14. The second connecting rod 14 is an angular structure, and its bending part is a fulcrum for rotation connection. Its rear end is connected to the connecting cylinder 15, and its front end is connected to the first connecting rod 13. The first connecting rod 13 is connected to the swing arm. When the circuit breaker mechanism 1 is opened and closed, it drives the main shaft 12 to rotate in opening and closing. When the circuit breaker rotates in closing, the main shaft 12 drives the connecting cylinder 15 to move backward through the swing arm and the two connecting rods. When the circuit breaker rotates in opening, the main shaft 12 drives the connecting cylinder 15 to move forward through the swing arm and the two connecting rods. The connecting cylinder 15 is connected to the connecting rod in the longitudinal rotation type functional composite vacuum isolation circuit breaker. The movement of the connecting cylinder 15 drives the movement of the connecting rod.

[0044] The circuit breaker mechanism 1 is a mature product that can be purchased directly on the market. Those skilled in the art can select a suitable circuit breaker mechanism 1 according to actual conditions. The closing bend 11 is a component of the circuit breaker mechanism 1. Preventing the closing bend 11 from rotating can prevent the circuit breaker mechanism 1 from closing.

[0045] The principle of the isolation mechanism 2 driving the longitudinal beam to rotate is as follows: it includes an isolation operating shaft 21, a screw rod 22, a nut 23 and a swing seat 24, the isolation operating shaft 21 is arranged in the front-to-back direction, the screw rod 22 is arranged in the left-to-right direction, and the power is transmitted between the isolation operating shaft 21 and the screw rod 22 through a pair of bevel gears, the nut 23 is arranged on the screw rod 22, the swing seat 24 is arranged to rotate on the casing, a baffle is arranged on the nut 23, and the swing seat 24 is connected to the longitudinal beam through a flange; during operation, the isolation operating shaft 21 drives the screw rod 22 to rotate, the screw rod 22 drives the nut 23 to move left and right, and the nut 23 pushes the swing seat 24 to make a 90° reciprocating rotation in the left and right directions through the baffle, so that the swing seat 24 drives the longitudinal beam to rotate horizontally and vertically.

[0046] The drive modes of the isolation operating shaft 21 include manual and electric, that is, the isolation operating shaft 21 is rotated manually through the operating handle 36, or the isolation operating shaft 21 is driven to rotate by the isolation motor 25+gear.

[0047] The longitudinally rotating circuit breaker operating mechanism of this embodiment uses an isolating-disconnecting interlocking mechanism, the main purpose of which is to improve the safety of the entire operating mechanism. Therefore, if the circuit breaker mechanism 1 is not locked when the isolating operating shaft 21 is manually operated, or if the isolating mechanism 2 is not locked after the circuit breaker is closed, a danger may occur.

[0048] The present patent application discloses an isolation-circuit-breaking interlocking mechanism for a longitudinally rotating circuit breaker operating mechanism, the purpose of which is to prevent the occurrence of such danger and improve the safety of the entire operating mechanism.

[0049] like Figures 1 to 6 As shown, a longitudinal rotation type circuit breaker operating mechanism isolating-circuit breaking interlocking mechanism includes

[0050] A housing, in which a circuit breaker mechanism 1 and an isolation mechanism 2 are mounted, wherein the main shaft 12 of the circuit breaker mechanism 1 is arranged in a left-right direction, and the isolation operating shaft 21 of the isolation mechanism 2 is arranged in a front-back direction, and the front end of the isolation operating shaft 21 forms a handle connecting section;

[0051] The first interlocking mechanism 3 has a trigger end located in front of the isolation operating shaft 21 and a locking end adapted to cooperate with the closing bend 11 of the circuit breaker mechanism 1;

[0052] When the operating handle 36 is connected to the handle connecting section, the operating handle 36 pushes the trigger end to operate, so that the locking end locks the closing bent plate 11 to restrict the circuit breaker mechanism 1 from closing.

[0053] Specifically, as an optional implementation in this embodiment, Figure 4 Figure 5 As shown, the first interlocking mechanism 3 includes

[0054] A half shaft 31 , on which a trigger plate 32 and a lever 33 are mounted. The trigger plate 32 is located in front of the isolation operating shaft 21 . The half shaft 31 is elastically rotatable within the housing to drive the trigger plate 32 and the lever 33 to swing in a front-to-back direction.

[0055] A push plate 34 is elastically slidable in the housing in a forward and backward direction, with its front end abutting against the lever 33 and its rear end forming a horizontal inclined push surface;

[0056] The locking plate 35 is arranged in a left-right direction, with its center being rotatably connected to the housing so as to allow it to elastically rotate up and down within the housing. A roller 351 is mounted on its right end for cooperating with the horizontal inclined push surface, and its left end forms a locking end.

[0057] When the operating handle 36 is connected to the isolation operating shaft 21, the operating handle 36 pushes the trigger plate 32, the half shaft 31 and the driving rod 33 to rotate, and the driving rod 33 pushes the push plate 34 to translate backward, thereby driving the locking plate 35 to rotate counterclockwise, so that the locking end blocks the closing bent plate 11.

[0058] In this embodiment, a return torsion spring is installed between the half shaft 31 and the housing, and a return spring is installed between the push plate 34 and the lock plate 35 and the housing respectively.

[0059] In this embodiment, a guide groove is defined at the front end of the push plate 34 , and the lever 33 is located in the guide groove, so that the lever 33 can stably drive the push plate 34 to move backward when it rotates, thereby preventing the lever 33 from detaching from the push plate 34 .

[0060] like Figure 6As shown, an inner six holes are provided in the operating handle 36, and the cross-section of the handle connecting section is a hexagon. When the operating handle 36 is inserted into the isolation operating shaft 21, the operating handle 36 must first push the trigger plate 32, thereby rotating the half-shaft 31 and the dial rod 33, and the dial rod 33 drives the push plate 34 to move backward. When the push plate 34 moves horizontally in the front and rear directions, point contact is formed between the horizontal inclined push surface and the roller 351. As the push plate 34 moves backward, the horizontal inclined push surface slowly slides downward from the roller 351, and the left end of the lock plate 35 and the roller 351 slowly move upward, so that the right end of the lock plate 35 (i.e., the locking end) blocks the action of the closing bent plate 11 in the circuit breaker mechanism 1, making the circuit breaker mechanism 1 unable to close. At this time, it is safe for the operator to control the isolation mechanism 2 to perform opening and closing operations (i.e., drive the longitudinal beam to rotate horizontally and vertically) through the operating handle 36.

[0061] Specifically, as an optional implementation in this embodiment, Figure 1 As shown, a baffle 37 is provided in the housing. The baffle 37 is vertically elastically provided in the housing. The baffle 37 is located in front of the trigger plate 32 and has a handle through-hole.

[0062] When the baffle 37 moves to the lower position, the handle perforation corresponds to the trigger plate 32 front and back, so that the operating handle 36 passing through can push the trigger plate 32.

[0063] The baffle 37 in this embodiment is mainly used to provide an additional safety guarantee for the insertion of the operating handle 36. The upper end of the baffle 37 extends from the top of the casing. When the operator needs to insert the handle, he must first press down the baffle 37 so that the perforation on the baffle 37 corresponds to the trigger plate 32, so that the operating handle 36 can push the trigger plate 32, thereby improving the safety of the operating mechanism.

[0064] Specifically, as an optional implementation in this embodiment, Figure 1 Figure 4 Figure 5 As shown, a second interlocking mechanism 4 is provided between the main shaft 12 and the isolation mechanism 2. The second interlocking mechanism 4 includes

[0065] The cam 41 is fixed on the main shaft 12.

[0066] The slide plate 42 is elastically arranged vertically in the housing, with its lower section abutting against the cam 41 and its upper end being adapted to engage with the push plate 34. The slide plate 42 is provided with a locking protrusion 421.

[0067] A micro switch 422, wherein the micro switch 422 is adapted to control the power on and off of the isolation motor 25;

[0068] When the circuit breaker mechanism 1 drives the main shaft 12 to rotate to the closing position, the slide plate 42 is lifted upward, and the upper end of the slide plate 42 engages the push plate 34 to limit the push plate 34 from moving forward. The locking protrusion 421 triggers the micro switch 422 to cut off the power to the isolation motor 25.

[0069] A return spring is provided between the slide plate 42 and the casing. When the slide plate 42 moves upward, the return spring stretches. After the circuit breaker is opened, the return spring pulls the slide plate 42 downward to unlock the push plate 34.

[0070] The second interlocking mechanism 4 ensures that when the circuit breaker mechanism 1 is in the closed state (the corresponding connecting rod moves backward and the vacuum circuit breaker is in the on state), the isolation mechanism 2 cannot be manually opened or closed (the corresponding longitudinal beam cannot be rotated to a horizontal state). While improving the safety of the operating mechanism, the safety of the longitudinal rotation function composite vacuum isolation circuit breaker is correspondingly improved.

[0071] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0072] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0073] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0074] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. There may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some communication interface, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0075] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0076] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0077] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. An isolation-circuit breaking interlock mechanism for a longitudinally rotating circuit breaker operating mechanism, characterized in that: include A casing, wherein a circuit breaker mechanism (1) and an isolation mechanism (2) are mounted in the casing, wherein a main shaft (12) of the circuit breaker mechanism (1) is arranged in a left-right direction, and an isolation operating shaft (21) of the isolation mechanism (2) is arranged in a front-back direction, and a front end of the isolation operating shaft (21) forms a handle connection section; A first interlocking mechanism (3), the triggering end of which is located on the front side of the isolation operating shaft (21), and the locking end of which is suitable for cooperating with the closing bent plate (11) of the circuit breaker mechanism (1); When the operating handle (36) is connected to the handle connecting section, the operating handle (36) pushes the trigger end to operate, thereby causing the locking end to lock the closing bent plate (11) to restrict the circuit breaker mechanism (1) from closing; The first interlocking mechanism (3) comprises A half shaft (31), a trigger plate (32) and a shift lever (33) are provided on the half shaft (31), the trigger plate (32) is located in front of the isolation operating shaft (21), and the half shaft (31) is elastically rotatable in the housing to drive the trigger plate (32) and the shift lever (33) to swing in the front-back direction; A push plate (34) is elastically slidably arranged in the housing in a forward and backward direction, with its front end abutting against the shifting rod (33) and its rear end forming a horizontal inclined push surface; The locking plate (35) is arranged in a left-right direction, and its middle part is rotatably connected to the housing so that it can be elastically rotated up and down in the housing. The right end of the locking plate (35) is installed with a roller (351) that cooperates with the horizontal inclined push surface, and the left end forms a locking end; A return torsion spring is installed between the half shaft and the housing, and a return spring is installed between the push plate and the lock plate and the housing respectively; When the operating handle (36) is connected to the isolation operating shaft (21), the operating handle (36) pushes the trigger plate (32), the half shaft (31) and the shifting rod (33) to rotate, and the shifting rod (33) pushes the push plate (34) to translate backward, thereby driving the locking plate (35) to rotate counterclockwise, so that the locking end blocks the closing bent plate (11).

2. The isolation-disconnection interlocking mechanism for a longitudinally rotating circuit breaker operating mechanism according to claim 1, wherein: A baffle (37) is provided in the housing, the baffle (37) is vertically elastically provided in the housing, the baffle (37) is located in front of the trigger plate (32), and a handle through-hole is provided on the baffle (37); When the baffle (37) moves to the lower working position, the handle perforation corresponds to the trigger plate (32) front and back, so that the operating handle (36) passing through can push the trigger plate (32).

3. The isolation-disconnection interlocking mechanism for a longitudinally rotating circuit breaker operating mechanism according to claim 1, wherein: A second interlocking mechanism (4) is provided between the main shaft (12) and the isolation mechanism (2), and the second interlocking mechanism (4) includes A cam (41) is fixedly mounted on the main shaft (12); A slide plate (42) is elastically arranged vertically in the housing, with its lower section abutting against the cam (41) and its upper end being adapted to be engaged with the push plate (34). A locking protrusion (421) is provided on the slide plate (42); A micro switch (422), wherein the micro switch (422) is suitable for controlling the power on and off of the isolation motor (25); When the circuit breaker mechanism (1) drives the main shaft to rotate to the closing position, the slide plate (42) is driven to lift upward, and the upper end of the slide plate (42) engages the push plate (34) to limit the push plate (34) from moving forward. The locking protrusion (421) triggers the micro switch (422) to cut off the power to the isolation motor (25).

Images