A flexible interlocking device between a circuit breaker and a disconnector and a switchgear

Abstract

The application relates to a flexible interlocking device between a circuit breaker and a disconnector and a switch cabinet, the switch cabinet comprising a disconnector operating mechanism and a circuit breaker operating mechanism in a cabinet body, and further comprising a flexible interlocking device between the disconnector operating mechanism and the circuit breaker operating mechanism, the interlocking device comprising an interlocking disc, a locking member movably assembled on the cabinet body, a plurality of locking grooves on the outer circumferential surface of the interlocking disc, the circuit breaker operating mechanism driving the locking member to reciprocate through a connecting rod mechanism, the locking member having a locking position inserted into the locking groove and an unlocking position separated from the locking groove, the locking member comprising a main body part and an insertion part, the insertion part and the main body part being slidably assembled together, a spring arranged between the insertion part and the main body part, the spring being used for applying an elastic force to the insertion part towards the locking groove, and the flexible interlocking device effectively solving the problems of higher machining and assembling precision and more complicated adjustment of the interlocking mechanism in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of interlocking between two switches, in particular to the interlocking structure between a circuit breaker and a disconnector. BACKGROUND

[0002] In high-voltage switchgear, the circuit breaker operating mechanism and the disconnector operating mechanism need to be interlocked so that the disconnector cannot be operated when the circuit breaker is in the closed state. At present, the interlocking between the circuit breaker operating mechanism and the disconnector operating mechanism is roughly divided into two forms: one is to block the operation hole, and the other is to use a rigid interlocking mechanism. The interlocking mechanism disclosed in the Chinese utility model patent with the publication number CN211957527U is a kind of operation interlocking mechanism for three-position vacuum circuit breaker, which has the advantages of simple structure and reliable manual operation. However, the interlocking mechanism is independent of the electrical interlocking, and when the electrical interlocking fails, the interlocking mechanism will also lose its interlocking ability. The other is to use a rigid interlocking mechanism, which directly locks the input shaft or output shaft of the disconnector, for example, the Chinese utility model patent with the publication number CN206421965U discloses a circuit breaker and disconnector operation interlocking mechanism, which includes a disconnector operating shaft that can drive the disconnector to open and close, a clamping groove is arranged on the outer surface of the disconnector operating shaft, and a linkage arm is arranged above the disconnector operating shaft, the linkage arm is connected with the opening and closing part of the circuit breaker, and a hook is arranged on the linkage arm, when the opening and closing part of the circuit breaker is in the closed position, the hook on the linkage arm will be clamped into the clamping groove of the disconnector operating shaft, and the disconnector operating shaft will be locked.

[0003] The above-mentioned circuit breaker and disconnector operation interlocking mechanism requires high assembly precision to ensure that the hook on the linkage arm is clamped into the clamping groove of the disconnector operating shaft when the opening and closing part of the circuit breaker is in the closed position, and the initial position of the disconnector operating shaft needs to be adjusted repeatedly after assembly. If the initial position is not adjusted or the assembly precision is low, the hook and the outer edge of the clamping groove will collide rigidly, which will cause the hook to deform and the interlocking mechanism to fail, and the hook will not be clamped into the clamping groove, resulting in interlocking failure. SUMMARY

[0004] The purpose of the present application is to provide a flexible interlocking device between a circuit breaker and a disconnector to solve the problem of high machining and assembly precision and tedious adjustment of the interlocking mechanism in the prior art. The present application also provides a switchgear to solve the above-mentioned problems.

[0005] The flexible interlocking device between the circuit breaker and the disconnector in the application adopts the following technical scheme:

[0006] The flexible interlocking device between the circuit breaker and the disconnector comprises an interlocking disc for being fixed on a rotating shaft of a disconnector operating mechanism and a locking member for being movably assembled on a cabinet body, a plurality of locking grooves are uniformly distributed on the outer circumferential surface of the interlocking disc in the circumferential direction, the locking member is used for being adaptively inserted into the locking grooves, the interlocking device further comprises a connecting rod mechanism for connecting the locking member and a circuit breaker operating mechanism, the circuit breaker operating mechanism drives the locking member to reciprocate through the connecting rod mechanism, the locking member has a locking position for being inserted into the locking grooves to prevent the disconnector operating mechanism from being actuated and an unlocking position separated from the locking grooves, the locking member comprises a main body part and an insertion part, the main body part is connected with the connecting rod mechanism, the insertion part is slidably assembled with the main body part, and an elastic member is arranged between the insertion part and the main body part, the elastic member is used for applying an elastic force to the insertion part towards the locking grooves.

[0007] Beneficial effects: the flexible interlocking device between the circuit breaker and the disconnector provided by the application is installed on the cabinet body of a switch cabinet when in use, when the circuit breaker operating mechanism is actuated to the closed position, the locking member is inserted into the locking grooves through the connecting rod mechanism to complete the locking of the disconnector operating mechanism, when the circuit breaker operating mechanism is actuated to the open position, the locking member is separated from the locking grooves through the connecting rod mechanism, since the plurality of locking grooves are uniformly distributed on the outer circumferential surface of the interlocking disc, the locking of the disconnector operating mechanism can be completed when the locking member is inserted into any one of the locking grooves, compared with the way that the hook in the interlocking mechanism of the prior art can only cooperate with the clamping groove at a specific position on the disconnector operating shaft, the interlocking disc provided by the application does not need to adjust the initial position of the interlocking disc when the interlocking disc is fixed on the disconnector operating mechanism; in addition, the main body part and the insertion part of the locking member are slidably assembled, when the locking member collides with the groove along the locking groove, the insertion part and the main body part can slide towards each other to shrink the overall size to avoid deformation caused by rigid collision, when the interlocking disc rotates synchronously when the disconnector operating mechanism is actuated, the main body part can quickly insert into the locking groove to be locked under the elastic force of the elastic member when the locking groove on the interlocking disc is aligned with the main body part, so that normal interlocking can be realized even if the locking member collides with the groove along the locking groove, and the precision requirement during the processing and assembly of the interlocking device is reduced.

[0008] Further, the main body part is provided with a mounting hole, the insertion part is slidably mounted in the mounting hole, the insertion part is provided with a protruding ring, and the mounting hole is provided with a stop member at the hole opening position to cooperate with the protruding ring to prevent the insertion part from separating from the mounting hole.

[0009] Beneficial effect: the anti-disassembly of the main part and the insertion part of the locking piece can enhance the stability of the locking piece structure, avoid the disassembly of the insertion part from the main part when the locking piece collides, and thus cause the interlocking failure.

[0010] Further, the interlocking device comprises a fixed slide for mounting on the cabinet body, the fixed slide extends along the radial direction of the interlocking disc, and the locking piece is slidingly assembled in the fixed slide.

[0011] Beneficial effect: the guiding of the locking piece by the fixed slide can make the movement trajectory of the locking piece more accurate, which is beneficial to improve the stability of the interlocking device; in addition, compared with the oblique insertion mode, the locking piece is inserted into the locking slot along the radial direction of the interlocking disc, and thus the resistance is smaller and the insertion depth is deeper, and the locking effect is better.

[0012] Further, the main part is provided with a connecting arm which is perpendicular to the axis of the main part, and the connecting arm is provided with a long hole in which the connecting arm is sleeved, and the connecting arm and the connecting arm are hinged together through the long hole.

[0013] Beneficial effect: such arrangement is to facilitate the connection between the locking piece and the connecting rod mechanism, and improve the assembly efficiency.

[0014] Further, the interlocking disc is provided with a beam between any two adjacent locking slots, and the circumferential width of the beam is less than or equal to the circumferential width of the locking slot.

[0015] Beneficial effect: such arrangement is to make the spacing between the adjacent locking slots smaller, so as to increase the number of locking slots, reduce the probability of collision between the locking piece and the slot edge of the locking slot, and in addition, even if the locking piece and the slot edge of the locking slot collide, since the circumferential width of the beam between the adjacent locking slots is small, the interlocking disc can be quickly aligned with the locking piece on the interlocking disc by rotating a small angle, and the locking of the disconnecting switch operating mechanism is completed.

[0016] In the switch cabinet, the following technical scheme is adopted:

[0017] The switch cabinet comprises a cabinet body, an isolating switch operating mechanism and a circuit breaker operating mechanism are installed in the cabinet body, and the switch cabinet further comprises an interlocking device between the isolating switch operating mechanism and the circuit breaker operating mechanism, the interlocking device comprises an interlocking disc fixed on a rotating shaft in the isolating switch operating mechanism, a locking piece is movably arranged on the cabinet body, a plurality of locking grooves are uniformly distributed on the outer circumferential surface of the interlocking disc in the circumferential direction, the locking piece is used for being adapted to be inserted into the locking grooves, the locking piece is connected with the circuit breaker operating mechanism through a connecting rod mechanism, the circuit breaker operating mechanism drives the locking piece to reciprocate through the connecting rod mechanism, the locking piece has a locking position of being inserted into the locking grooves to prevent the isolating switch operating mechanism from being actuated and an unlocking position of being separated from the locking grooves, the locking piece comprises a main body part and an insertion part, the main body part is connected with the connecting rod mechanism, the insertion part is slidably assembled with the main body part, and an elastic piece is arranged between the insertion part and the main body part, and the elastic piece is used for applying an elastic force to the insertion part towards the locking grooves.

[0018] Beneficial effects: the switch cabinet provided by the application comprises an isolating switch operating mechanism and a circuit breaker operating mechanism installed in a cabinet body, the isolating switch operating mechanism and the circuit breaker operating mechanism are interlocked through a flexible interlocking device between the circuit breaker and the isolating switch, when the circuit breaker operating mechanism is actuated to the closed position, the locking piece is inserted into the locking grooves through the connecting rod mechanism to complete the locking of the isolating switch operating mechanism, when the circuit breaker operating mechanism is actuated to the open position, the locking piece is separated from the locking grooves through the connecting rod mechanism, since the plurality of locking grooves are uniformly distributed on the outer circumferential surface of the interlocking disc, the locking of the isolating switch operating mechanism can be completed when the locking piece is inserted into any one of the locking grooves, compared with the way that the hook in the interlocking mechanism of the prior art can only cooperate with the clamping groove at a specific position on the isolating switch operating shaft, the interlocking disc provided by the application does not need to adjust the initial position of the interlocking disc when the interlocking disc is fixed on the isolating switch operating mechanism; in addition, the main body part and the insertion part of the locking piece are in sliding assembly, when the locking piece collides with the groove along the locking groove, the insertion part and the main body part can slide towards each other to shrink the overall size to avoid deformation caused by rigid collision, when the locking groove on the interlocking disc is aligned with the main body part during the actuation of the isolating switch operating mechanism, the main body part can be quickly inserted into the locking groove to be locked under the elastic force of the elastic piece, so that normal interlocking can be realized even if the locking piece collides with the groove along the locking groove, and the precision requirement during the machining and assembly of the interlocking device is reduced.

[0019] Further, the main body part is provided with a mounting hole, the insertion part is slidably mounted in the mounting hole, the insertion part is provided with a convex ring, and a stop piece that cooperates with the convex ring to prevent the insertion part from separating from the mounting hole is arranged at the hole opening position of the mounting hole.

[0020] Beneficial effects: the anti-disassembly of the main part and the insertion part of the locking piece can enhance the stability of the locking piece structure, avoid the disassembly of the insertion part from the main part when the locking piece collides, and thus cause the interlocking failure.

[0021] Further, the interlocking device comprises a fixed slide for mounting on the cabinet body, the fixed slide extends along the radial direction of the interlocking disc, and the locking piece is slidingly assembled in the fixed slide.

[0022] Beneficial effects: the guiding of the locking piece by the fixed slide can make the movement trajectory of the locking piece more accurate, which is conducive to improving the stability of the interlocking device; in addition, compared with the oblique insertion mode, the locking piece is inserted into the locking groove along the radial direction of the interlocking disc, and thus the resistance is smaller and the insertion depth is deeper, and the locking effect is better.

[0023] Further, the rotating shaft is an input shaft of the isolating switch, and the interlocking disc is fixedly installed on the input shaft of the isolating switch.

[0024] Beneficial effects: the transmission between the input shaft and the output shaft of the operating mechanism of the isolating switch is realized through the force amplifier, so that a larger limiting torque is required for locking the output shaft, and thus compared with the mode of locking the output shaft, locking the input shaft by fixing the interlocking disc on the input shaft requires lower strength and size of the limiting part, and can reduce the production difficulty and cost.

[0025] Further, the interlocking disc forms a cross beam between any two adjacent locking grooves, and the circumferential width of the cross beam is less than or equal to the circumferential width of the locking groove.

[0026] Beneficial effects: such a setting is to make the spacing between adjacent locking grooves smaller, thereby increasing the number of locking grooves and reducing the probability of collision between the locking piece and the groove edge of the locking groove; in addition, even if the locking piece collides with the groove edge of the locking groove, since the circumferential width of the cross beam between adjacent locking grooves is small, the interlocking disc can be quickly aligned with the locking piece on the interlocking disc by rotating a small angle, and the locking of the operating mechanism of the isolating switch is completed. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of the flexible interlocking device between the circuit breaker and the isolating switch provided by the present application installed in a switch cabinet structure;

[0028] Figure 2 is a schematic view of the flexible interlocking device between the circuit breaker and the isolating switch provided by the present application in a locked position;

[0029] Figure 3 is Figure 1 rear view of

[0030] Figure 4 is Figure 1 schematic view of the flexible interlocking device between the circuit breaker and the disconnector in

[0031] Figure 5 is Figure 1 schematic view of the structure of the locking member in

[0032] The names of the components corresponding to the respective reference numerals in the drawings are as follows:

[0033] 1, circuit breaker output shaft; 11, circuit breaker swing arm; 12, first hinge shaft; 2, transmission connecting rod; 21, rotating pin; 22, first hinge hole; 23, second hinge hole; 3, fixed slide; 4, locking member; 41, main body portion; 42, mounting hole; 43, connecting arm; 44, stopper; 45, insertion portion; 46, protruding ring; 47, elastic member; 5, interlocking disc; 51, locking groove; 52, lintel; 6, disconnector input shaft; 7, cabinet body; 71, disconnector operating mechanism; 72, circuit breaker operating mechanism. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, i.e., the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0035] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0036] It should be noted that in the specific embodiments of the present application, the relationship terms such as "first" and "second" and the like that can occur are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any actual relationship or order between the entities or operations. Moreover, the terms such as "include", "contain" or any other variants that can occur are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. The definite elements that can occur in the statement "include a" and the like do not exclude the presence of other same elements in the process, method, article or device including the elements, without more limitations.

[0037] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" that can occur should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the description of the present application, unless otherwise explicitly specified and limited, the term "provided with" that can occur should be understood broadly, for example, the object "provided with" can be part of the body, or can be arranged separately from the body and connected to the body, and the connection can be detachable connection, or can be non-detachable connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] The present application is further described below in conjunction with the embodiments.

[0040] Embodiment 1 of the switch cabinet in the present application:

[0041] As Figure 1 and Figure 2As shown, the cabinet body 7 of the switch cabinet provided in the embodiment is provided with a disconnecting switch operating mechanism 71 and a circuit breaker operating mechanism 72, and an interlocking device is arranged between the disconnecting switch operating mechanism 71 and the circuit breaker operating mechanism 72. The interlocking device comprises an interlocking disc 5, a locking piece 4 and a connecting rod mechanism. The interlocking disc 5 is fixed on a rotating shaft of the disconnecting switch operating mechanism 71. The locking piece 4 is movably assembled on the switch cabinet and is connected to the circuit breaker operating mechanism 72 through the connecting rod mechanism. When the circuit breaker is operated to the closed position, the locking piece 4 is inserted into a locking groove 51 on the interlocking disc 5, thereby completing the locking of the disconnecting switch. When the circuit breaker is operated to the open position, the locking piece 4 is separated from the locking groove 51 on the interlocking disc 5, thereby completing the unlocking of the disconnecting switch operating mechanism 71.

[0042] Specifically, as shown in Figure 2 and Figure 3 , the interlocking disc 5 is coaxially installed on the disconnecting switch input shaft 6 (i.e. the input shaft of the disconnecting switch operating mechanism 71). A plurality of locking grooves 51 are arranged on the outer circumferential surface of the interlocking disc 5 in the circumferential direction. The locking grooves 51 are U-shaped grooves, and a beam 52 is formed between adjacent locking grooves 51. The circumferential width of each locking groove 51 is uniform and uniformly spaced. A fixed slide 3 is installed near the interlocking disc 5. The fixed slide 3 is located directly above the interlocking disc 5 and extends in the radial direction of the interlocking disc 5. The extension direction of the fixed slide 3 is the up-down direction. The locking piece 4 is slidably assembled in the fixed slide 3, wherein the fixed slide 3 is a sleeve body. The locking piece 4 is connected to the circuit breaker output shaft 1 through the connecting rod mechanism. The circuit breaker operating mechanism 72 drives the locking piece 4 to reciprocate in the up-down direction through the connecting rod mechanism. The locking piece 4 has a locking position and an unlocking position on the sliding stroke. When the circuit breaker operating mechanism 72 is operated to the closed position, the locking piece 4 is inserted into the locking groove 51 (i.e. the locking piece is located at the locking position, as shown in Figure 2 and Figure 3 ), at which time the disconnecting switch cannot be operated. When the circuit breaker operating mechanism 72 is operated to the open position, the locking piece 4 is separated from the corresponding locking groove 51 (i.e. the locking piece is located at the unlocking position, as shown in Figure 4 ), at which time the disconnecting switch can be normally operated.

[0043] In the embodiment, the locking piece 4 comprises a main body portion 41 and an insertion portion 45. The main body portion 41 is connected to the circuit breaker operating mechanism 72 through the connecting rod mechanism. The insertion portion 45 is adapted to be inserted into the locking groove 51 when the locking piece 4 is located at the locking position. As shown in Figure 5As shown, the main body part 41 is a cylindrical structure, the insertion part 45 is a columnar structure, the main body part 41 and the insertion part 45 are slidingly assembled, the main body part 41 is provided with a mounting hole 42 extending along the axial direction of the main body part 41, the insertion part 45 is slidingly mounted in the mounting hole 42, the insertion part 45 is coaxially arranged with the main body part 41, and an elastic member 47 is arranged between the insertion part 45 and the main body part 41. In addition, the outer circumferential surface of the insertion part 45 is provided with a protruding ring 46, the mounting hole 42 is provided with a stop member 44 at the hole opening position, the stop member 44 and the protruding ring 46 form a stop cooperation in the extension direction of the mounting hole 42 to prevent the insertion part 45 from being pulled out of the mounting hole 42. In this embodiment, the stop member 44 is a threaded sleeve, the elastic member 47 is a spring, and the mounting hole 42 is provided with threads at the hole wall near the hole opening. When assembling the locking member 4, the spring and the insertion part 45 are sequentially placed into the mounting hole 42, and then the threaded sleeve is sleeved on the insertion part 45 and screwed to the hole opening position of the mounting hole 42.

[0044] In this embodiment, as shown in Figure 2 and Figure 3 , the connecting rod mechanism includes a transmission connecting rod 2, which is a plate-shaped structure. The transmission connecting rod 2 is rotatably mounted on the cabinet body 7 through a rotating pin shaft 21. One end of the transmission connecting rod 2 near the circuit breaker operating mechanism 72 is provided with a first hinged hole 22. The circuit breaker output shaft 1 is provided with a circuit breaker swing arm 11. The circuit breaker swing arm 11 is provided with a first hinge shaft 12. The first hinge shaft 12 passes through the first hinged hole 22 to complete the hinging of the transmission connecting rod 2 and the circuit breaker swing arm 11. Figure 4 As shown in , the main body part 41 is provided with a connecting arm 43, the extension direction of the connecting arm 43 is perpendicular to the axial direction of the main body part 41, the second hinged hole 23 is sleeved on the connecting arm 43, and the main body part 41 and the transmission connecting rod 2 are hingedly connected through the connecting arm 43 and the second hinged hole 23. To prevent the connecting arm 43 and the transmission connecting rod 2 from being disconnected, a snap spring ring groove is formed at the end of the connecting arm 43. After the transmission connecting rod 2 is sleeved on the connecting arm 43, the snap spring is assembled in the snap spring ring groove. In this embodiment, the transmission connecting rod 2 is actually a lever structure.

[0045] Figure 2 In this embodiment, the clockwise swinging direction of the circuit breaker swing arm 11 is defined as the closing direction of the circuit breaker operating mechanism 72, and the counterclockwise swinging direction of the circuit breaker swing arm 11 is defined as the opening direction of the circuit breaker operating mechanism 72. Figure 3As shown, when the circuit breaker is closed, the circuit breaker swing arm 11 swings clockwise, driving the transmission connecting rod 2 to swing counterclockwise around the rotating pin shaft 21, and the end of the transmission connecting rod 2 provided with the second hinge hole 23 swings downward. If the part of the interlocking disc 5 aligned with the locking member 4 at this time is the locking groove 51, the locking member 4 will smoothly slide downward and insert into the corresponding locking groove 51 to complete the locking of the input shaft of the disconnecting switch. If the part of the interlocking disc 5 aligned with the locking member 4 at this time is the beam 52 between adjacent locking members 4, a collision will occur between the locking member 4 and the corresponding beam 52 during the downward sliding process. It needs to be emphasized that the collision between the locking member 4 and the corresponding beam 52 is a flexible collision. After the collision, the insertion portion 45 and the main body portion 41 can slide towards each other, i.e. the insertion portion 45 retracts into the mounting hole 42, the spring is in a compressed state, and the axial size of the locking member 4 is shortened. At this time, the interlocking disc 5 has not been locked, and the disconnecting switch operating mechanism 71 can still operate normally. When the disconnecting switch is operated, the interlocking disc 5 rotates in the corresponding direction synchronously, the locking member 4 gradually aligns with the locking groove 51 on the corresponding side of the beam 52, and the locking member 4 quickly inserts into the corresponding locking groove 51 under the elastic force of the elastic member 47. At this time, the locking member 4 is located on the locking position, and the disconnecting switch operating mechanism 71 cannot operate normally.

[0046] It needs to be explained that, in order to reduce the probability of collision between the locking member 4 and the beam 52, the circumferential width of the beam 52 is smaller than the circumferential width of the locking groove 51 in this embodiment, so that more number of locking grooves 51 can be arranged on the outer periphery of the interlocking disc 5. In addition, even if the locking member 4 collides with the beam 52, since the circumferential width of the beam 52 is small, the locking member 4 can align with the corresponding locking groove 51 after the interlocking disc 5 rotates by a small angle, and quickly complete the locking of the disconnecting switch operating mechanism 71.

[0047] In this embodiment, as shown in the figure, Figure 4 As shown, when the circuit breaker is opened, the circuit breaker swing arm 11 swings counterclockwise, driving the transmission connecting rod 2 to swing clockwise around the rotating pin shaft, and the end of the transmission connecting rod 2 provided with the second hinge hole 23 swings upward, driving the locking member 4 to exit from the corresponding locking groove 51. At this time, the locking member 4 is located on the unlocking position, completing the unlocking of the disconnecting switch operating mechanism 71, and the disconnecting switch operating mechanism 71 can operate normally at this time.

[0048] It needs to be explained that, in order to make the transmission connecting rod 2 have sufficient degree of freedom when swinging, the first hinge hole 22 and the second hinge hole 23 are both long holes, and the extension direction of the long hole is consistent with the extension direction of the transmission connecting rod 2.

[0049] It should be noted that in the embodiment, the circuit breaker operating mechanism 72 drives the locking member 4 to act, and the circuit breaker swing arm 11 plays a transmission role, and the circuit breaker swing arm 11 is functionally part of a connecting rod mechanism, and in other embodiments, the circuit breaker swing arm 11 is part of the circuit breaker operating mechanism 72.

[0050] In actual use, the more the number of locking grooves 51, the higher the limiting precision, and the limiting precision depends on the number of locking grooves 51 and the transmission ratio of the transmission system of the isolation mechanism, assuming that the locking grooves 51 have 8, the system transmission ratio is 14.5, and the mechanism output circle number is 3.45, then the relative positioning accuracy ratio is 0.25%; assuming that the output end is one groove off, the input error is 1 / 8*360°=45°; the input error corresponds to the total output limiting error: 1 / 8 / 14.5 / 3.45*360°=0.8995°, then the relative positioning accuracy: 0.8995 / 45=1.9%, that is, the more the number of locking grooves 51, the higher the precision.

[0051] Among them, the disconnecting switch input shaft 6 is the rotating shaft of the disconnecting switch operating mechanism 71.

[0052] Embodiment 2 of the switch cabinet in the application:

[0053] The difference between the embodiment and the embodiment 1 is that in the embodiment 1, the hole position of the mounting hole is provided with a stop piece, and the main body part and the insertion part are formed into an anti-disassembly assembly. In the embodiment, the hole position of the mounting hole is not provided with a stop piece, and the two ends of the elastic piece are welded and fixed with the main body part and the insertion part, and the elastic piece is relied on to prevent the separation of the insertion part and the main body part.

[0054] Embodiment 3 of the switch cabinet in the application:

[0055] The difference between the embodiment and the embodiment 1 is that in the embodiment 1, the main body part is provided with a mounting hole, and the insertion part is slidingly assembled in the mounting hole. In the embodiment, the insertion part is provided with a mounting hole, and the main body part is slidingly assembled in the insertion part. In order to prevent the main body part from interfering with the transmission connecting rod when sliding, the connecting arm is arranged on the end of the main body part away from the insertion part, and the corresponding end of the main body part is hinged with the transmission connecting rod.

[0056] Embodiment 4 of the switch cabinet in the application:

[0057] The difference between the embodiment and the embodiment 1 is that, in the embodiment 1, the fixed slide way is arranged on the cabinet body of the switch cabinet, and the locking member is slidably assembled on the cabinet body through the fixed slide way. In the embodiment, the fixed slide way is not arranged on the upper part of the cabinet body of the switch cabinet, one end of the locking member is rotatably installed on the cabinet body, the locking member is fixed on the end of the transmission connecting rod close to the interlocking disc, the transmission connecting rod drives the locking member to reciprocate, and the locking member has a locking position inserted into the locking slot to prevent the action of the isolation mechanism and an unlocking position separated from the locking slot in the swing stroke of the locking member.

[0058] The embodiment 5 of the switch cabinet in the application:

[0059] The difference between the embodiment and the embodiment 1 is that, in the embodiment 1, the fixed slide way is arranged on the cabinet body of the switch cabinet, and the locking member is slidably assembled on the cabinet body through the fixed slide way. In the embodiment, the fixed slide way is not arranged on the upper part of the cabinet body of the switch cabinet, one end of the locking member is rotatably installed on the cabinet body, the locking member is fixed on the end of the transmission connecting rod close to the interlocking disc, the transmission connecting rod drives the locking member to reciprocate, and the locking member has a locking position inserted into the locking slot to prevent the action of the isolation mechanism and an unlocking position separated from the locking slot in the swing stroke of the locking member.

[0060] The embodiment 6 of the switch cabinet in the application:

[0061] The difference between the embodiment and the embodiment 1 is that, in the embodiment 1, the interlocking disc is fixed on the input shaft of the disconnecting switch, and in the embodiment, the interlocking disc is fixed on the output shaft of the disconnecting switch (namely the output shaft of the disconnecting switch operating mechanism). Since the input shaft and the output shaft of the disconnecting switch operating mechanism are transmitted through the force increasing mechanism, a larger limiting torque is required for locking the output shaft, and at this time, the size and strength of the locking member need to be appropriately strengthened. In other embodiments, the interlocking disc is fixed on the transmission shaft between the input shaft and the output shaft of the disconnecting switch.

[0062] The embodiment 7 of the switch cabinet in the application:

[0063] The difference between the embodiment and the embodiment 1 is that, in the embodiment 1, the circumferential width of the lintel is smaller than the circumferential width of the locking slot. In the embodiment, the circumferential width of the lintel is equal to the circumferential width of the locking slot. In other embodiments, the circumferential width of the lintel can be greater than the circumferential width of the locking slot, but under the premise of meeting the strength requirement, the more the number of the locking slots is, the better.

[0064] The embodiment of the flexible interlocking device between the circuit breaker and the disconnecting switch in the application:

[0065] The flexible interlocking device between the circuit breaker and the disconnecting switch in the embodiment is the same as the interlocking device in the embodiment 1 of the switch cabinet, and details are not repeated here.

[0066] In other embodiments, the structure of the flexible interlocking device between the circuit breaker and the disconnecting switch can also adopt the structure in any one of the above switch cabinet embodiments 2 to 7, and details are not repeated here.

[0067] The above merely illustrates the preferred embodiments of the present application, and is not used to limit the present application. The patent protection scope of the present application is defined by the claims, and any equivalent structural changes made according to the content of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A flexible interlock between a circuit breaker and a disconnector, characterized in that The interlocking device comprises an interlocking disc (5) for fixing on a rotating shaft of an isolating switch operating mechanism (71) and a locking member (4) for movably assembling on a cabinet (7), a plurality of locking grooves (51) are uniformly distributed on the outer circumferential surface of the interlocking disc (5) in the circumferential direction, the locking member (4) is used for fitting into the locking grooves (51), and a lintel is formed between any adjacent locking grooves, the circumferential width of the lintel is less than the circumferential width of the locking groove, the interlocking device further comprises a connecting rod mechanism for connecting the locking member (4) and a circuit breaker operating mechanism (72), the circuit breaker operating mechanism (72) drives the locking member (4) to reciprocate through the connecting rod mechanism, the locking member (4) has a locking position for fitting into the locking groove (51) to prevent the isolating switch operating mechanism (71) from operating and an unlocking position separated from the locking groove (51), the locking member (4) comprises a main body portion (41) and an insertion portion (45), the main body portion (41) is connected with the connecting rod mechanism, the insertion portion (45) is slidably assembled with the main body portion (41), and an elastic member (47) is arranged between the insertion portion (45) and the main body portion (41), the elastic member (47) is used for applying an elastic force to the insertion portion (45) towards the locking groove (51) and making the insertion portion and the main body portion slide towards each other to contract the overall size for buffering when the locking member and the locking groove collide.

2. The flexible interlocking device between a circuit breaker and disconnector according to claim 1, characterized in that, The main body portion (41) is provided with a mounting hole (42), the insertion portion (45) is slidably mounted in the mounting hole (42), the insertion portion (45) is provided with a convex ring (46), and the mounting hole (42) is provided with a stop piece (44) at the hole opening position for stopping cooperation with the convex ring (46) to prevent the insertion portion (45) from separating from the mounting hole (42).

3. The flexible interlock between a circuit breaker and a disconnector according to claim 1, characterized in that, The interlocking device comprises a fixed slide (3) for mounting on the cabinet (7), the fixed slide (3) extends in the radial direction of the interlocking disc (5), and the locking member (4) is slidably assembled in the fixed slide (3).

4. The flexible interlock between a circuit breaker and a disconnector according to claim 3, characterized in that, The main body portion (41) is provided with a connecting arm (43) perpendicular to the axis of the main body portion (41), the connecting rod mechanism is provided with a long hole sleeved on the connecting arm (43), and the connecting rod mechanism is hinged with the connecting arm (43) through the long hole.

5. A switchgear comprising a cabinet (7) in which a disconnector operating mechanism (71) and a circuit breaker operating mechanism (72) are installed, the switchgear further comprising an interlocking device between the disconnector operating mechanism (71) and the circuit breaker operating mechanism (72), characterized in that, The interlocking device comprises an interlocking disc (5) fixed on a rotating shaft in an operating mechanism (71) of an isolating switch, a locking member (4) movably assembled on a cabinet (7), a plurality of locking grooves (51) evenly distributed on the outer circumferential surface of the interlocking disc (5) in the circumferential direction, the locking member (4) being adapted to be inserted into the locking grooves (51), and a beam formed between any adjacent locking grooves, the circumferential width of the beam being smaller than that of the locking grooves, the locking member (4) being connected to the operating mechanism (72) of the circuit breaker through a connecting rod mechanism, the operating mechanism (72) of the circuit breaker driving the locking member (4) to reciprocate through the connecting rod mechanism, the locking member (4) having a locking position for being inserted into the locking grooves (51) to prevent the operating mechanism (71) of the isolating switch from operating and an unlocking position for being separated from the locking grooves (51), the locking member (4) comprising a main body portion (41) and an insertion portion (45), the main body portion (41) being connected to the connecting rod mechanism, the insertion portion (45) being slidably assembled with the main body portion (41), and an elastic member (47) being arranged between the insertion portion (45) and the main body portion (41) for applying an elastic force to the insertion portion (45) towards the locking grooves (51) and allowing the insertion portion and the main body portion to slide towards each other to contract the overall size for buffering when the locking member and the locking grooves collide.

6. Switchgear according to claim 5, characterized in that The main body portion (41) is provided with a mounting hole (42), the insertion portion (45) being slidably mounted in the mounting hole (42), the insertion portion (45) being provided with a protruding ring (46), and the mounting hole (42) being provided with a stop member (44) at the hole opening position for stopping the protruding ring (46) to prevent the insertion portion (45) from being separated from the mounting hole (42).

7. Switchgear according to claim 5, characterized in that The interlocking device comprises a fixed slide (3) for being mounted on the cabinet (7), the fixed slide (3) extending in the radial direction of the interlocking disc (5), and the locking member (4) being slidably assembled in the fixed slide (3).

8. Switchboard according to claim 5, characterized in that The rotating shaft is an input shaft (6) of the isolating switch, and the interlocking disc (5) is fixedly mounted on the input shaft (6) of the isolating switch.

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