Interlocking device

Abstract

The utility model relates to an interlocking device which is applied between a circuit breaker operating shaft of a quick circuit breaker mechanism and an isolating switch operating shaft of an isolating switch mechanism which are matched with each other, and the circuit breaker operating shaft and the isolating switch operating shaft are rotatably arranged on the outer side wall of the same side of a shell. The interlocking device comprises an interlocking piece and a transmission assembly which are arranged on the outer side wall, located on one side of the circuit breaker operating shaft, of the shell, the interlocking piece is located between the circuit breaker operating shaft and the disconnecting switch operating shaft, and the transmission assembly is matched with the circuit breaker operating shaft and driven by the circuit breaker operating shaft to rotate around the circuit breaker operating shaft. The transmission assembly drives the interlocking member to move between the circuit breaker operation shaft and the isolation switch operation shaft. When the circuit breaker is closed or opened, through cooperation of the transmission assembly, the interlocking member and the pre-existing circuit breaker operation shaft, the isolation switch operation shaft can be rapidly not shielded or shielded, so that safe operation of an electric power system is ensured, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of load switches, and in particular to an interlocking device. Background Art

[0002] As users have increasingly stringent requirements for power supply reliability, fast circuit breakers have gradually become the mainstream circuit breakers because they can quickly cut off faulty circuits and reduce the scope of faults in a timely manner. The lower disconnector, which can be referred to as the disconnector, is located downstream of the fast circuit breaker and is used to quickly isolate the circuit that has been cut off by the fast circuit breaker to shorten the power outage time of power equipment and reduce the impact on users.

[0003] In the related art, a traditional circuit breaker mechanism, a disconnector mechanism and an interlocking device are provided on the outer wall on one side of the shell of the pneumatic ring main unit, and the linkage between the traditional circuit breaker mechanism and the disconnector mechanism is realized through the interlocking device, that is, the linkage between the traditional circuit breaker and the disconnector. The interlocking device can be used to ensure the correct operating sequence and interlocking mechanism between the circuit breaker and the disconnector to prevent misoperation and human error. When the traditional circuit breaker in the pneumatic ring main unit is replaced with a fast circuit breaker, the original interlocking device needs to be redesigned to ensure the normal operation of the power system. However, the existing interlocking devices used between fast circuit breakers and disconnectors are of few types and complex in structure. Utility Model Content

[0004] Based on this, it is necessary to provide an interlocking device to address the problem that the existing interlocking devices used between the fast circuit breaker and the lower disconnector are of few types and complex structures.

[0005] An interlocking device is applied between a circuit breaker operating shaft of a matching fast circuit breaker mechanism and an isolating switch operating shaft of an isolating switch mechanism. The circuit breaker operating shaft and the isolating switch operating shaft are both rotatably arranged on the outer side wall of the same side of a housing. The interlocking device includes:

[0006] An interlocking member, the interlocking member being located between the operating shaft of the circuit breaker and the operating shaft of the disconnector;

[0007] The transmission assembly cooperates with the circuit breaker operating shaft, and under the drive of the circuit breaker operating shaft, the transmission assembly drives the interlocking part to move between the circuit breaker operating shaft and the disconnector operating shaft. When the fast circuit breaker is closed, the circuit breaker operating shaft drives the interlocking part to move toward the side close to the circuit breaker operating shaft through the transmission assembly until the disconnector operating shaft is exposed; when the fast circuit breaker is opened, the circuit breaker operating shaft drives the interlocking part to move toward the side close to the disconnector operating shaft through the transmission assembly until the interlocking part blocks the disconnector operating shaft.

[0008] In one embodiment, the transmission assembly includes a transmission member and a guide member, one end of the transmission member is connected to the circuit breaker operating shaft, the other end of the transmission member is movably connected to the interlocking member, and the guide member is slidably connected to one end of the interlocking member away from the transmission member.

[0009] In one embodiment, the transmission member includes a transmission arm, one end of the transmission arm is connected to the circuit breaker operating shaft, and the other end of the transmission arm is hinged to the interlocking member.

[0010] In one embodiment, the interlocking member includes an interlocking plate, and one end of the transmission arm away from the circuit breaker operating shaft is hinged to one end of the interlocking plate close to the circuit breaker operating shaft through an interlocking pin.

[0011] In one embodiment, the interlocking plate includes an interlocking plate body and a connecting rod, the connecting rod is arranged at one end of the interlocking plate body close to the circuit breaker operating axis, and the side wall of the connecting rod close to the circuit breaker operating axis and the end wall of the interlocking plate body close to the circuit breaker operating axis form a first corner.

[0012] In one of the embodiments, the interlocking plate further comprises a connecting end plate, which is arranged at one end of the interlocking plate body close to the circuit breaker operating shaft, and the connecting rod is arranged on the end wall of the connecting end plate close to the circuit breaker operating shaft, and the connecting end plate and the interlocking plate body enclose a receiving area opposite to the shell.

[0013] In one embodiment, the interlocking plate further comprises a baffle, which is arranged at one end of the interlocking plate body close to the operating shaft of the isolating switch, and the baffle and the end wall of the interlocking plate body close to the operating shaft of the isolating switch form a second corner.

[0014] In one embodiment, a limiting sliding hole is formed through one end of the interlocking plate body close to the baffle, and the guide member includes an interlocking shaft, one end of which is arranged on the outer wall of the shell, and the other end of the interlocking shaft passes through the limiting sliding hole and is slidably connected with the hole wall of the limiting sliding hole.

[0015] In one of the embodiments, one end of the interlocking shaft close to the housing is detachably connected to the housing.

[0016] In one of the embodiments, one end of the interlocking shaft extending out of the limiting sliding hole is provided with a thread groove for matching with a nut.

[0017] The above-mentioned interlocking device is applied between the circuit breaker operating shaft of the matching fast circuit breaker mechanism and the isolating switch operating shaft of the isolating switch mechanism. The circuit breaker operating shaft and the isolating switch operating shaft are both rotatably arranged on the outer wall of the same side of the shell. The interlocking device includes an interlocking member and a transmission assembly arranged on the outer wall of the shell on the side of the circuit breaker operating shaft. The interlocking member is located between the circuit breaker operating shaft and the isolating switch operating shaft. The transmission assembly cooperates with the circuit breaker operating shaft, and under the drive of the circuit breaker operating shaft, the transmission assembly drives the interlocking member to move between the circuit breaker operating shaft and the isolating switch operating shaft. In the present application, through the cooperation of the transmission assembly and the circuit breaker operating shaft, when the fast circuit breaker is closed, the power equipment is energized, and at the same time, the circuit breaker operating shaft drives the interlocking part to move toward the side close to the circuit breaker operating shaft through the transmission assembly until the disconnector operating shaft is exposed to the outside, so that the operator can perform the next operation on the circuit breaker; when the fast circuit breaker is opened, the power equipment is de-energized, and at the same time, the circuit breaker operating shaft drives the interlocking part to move toward the side close to the disconnector operating shaft through the transmission assembly until the interlocking part blocks the disconnector operating shaft to prevent the operator from misoperating or restoring power to the equipment under unsafe conditions, thereby ensuring the safe operation of the power system. When the circuit breaker is closed or opened, the present application helps to quickly unblock or block the disconnector operating shaft through the cooperation of the transmission assembly, the interlocking part and the pre-existing circuit breaker operating shaft to ensure the safe operation of the power system, and has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] FIG. 1 is a schematic diagram of the structure of an interlocking device in some embodiments of the present application.

[0020] FIG. 2 is an enlarged schematic diagram showing the structure of A in FIG. 1 .

[0021] FIG. 3 is a schematic diagram of the structure of an interlocking plate in some embodiments of the present application.

[0022] FIG. 4 is a schematic diagram of the structure of an interlocking shaft in some embodiments of the present application.

[0023] Description of Figure Numbers:

[0024] 100, circuit breaker operating shaft; 200, disconnector operating shaft; 300, housing; 400, interlocking member; 410, interlocking plate; 412, interlocking plate body; 4120, limiting sliding hole; 414, connecting rod; 4140, oblong hole; 416, connecting end plate; 418, baffle; 420, interlocking pin; 430, accommodating area; 500, transmission assembly; 510, transmission arm; 520, interlocking shaft; 522, threaded groove; 600, first corner; 700, second corner; 800, nut. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] In order to solve the problem that the existing interlocking devices applied between the fast circuit breaker and the lower disconnector are of few types and complex structures, the present application provides an interlocking device. As shown in Figures 1 and 2, the interlocking device provided in one embodiment of the present application is applied between the circuit breaker operating shaft 100 of the matching fast circuit breaker mechanism and the disconnector operating shaft 200 of the disconnector mechanism. The circuit breaker operating shaft 100 and the disconnector operating shaft 200 are both rotatably arranged on the outer side wall of the same side of the housing 300. The interlocking device includes an interlocking member 400 and a transmission assembly 500 arranged on the outer side wall of the housing 300 located on the side of the circuit breaker operating shaft 100. The interlocking member 400 is located on the circuit breaker operating shaft 100. The transmission assembly 500 cooperates with the circuit breaker operating shaft 100 and driven by the circuit breaker operating shaft 100. The transmission assembly 500 drives the interlocking member 400 to move between the circuit breaker operating shaft 100 and the disconnector operating shaft 200. When the fast circuit breaker is closed, the circuit breaker operating shaft 100 drives the interlocking member 400 to move toward the side close to the circuit breaker operating shaft 100 through the transmission assembly 500 until the disconnector operating shaft 200 is exposed to the outside; when the fast circuit breaker is opened, the circuit breaker operating shaft 100 drives the interlocking member 400 to move toward the side close to the disconnector operating shaft 200 through the transmission assembly 500 until the interlocking member 400 blocks the disconnector operating shaft 200.

[0032] Specifically, the circuit breaker operating shaft 100 and the disconnector operating shaft 200 are both rotatably arranged on the outer wall of the housing 300, the circuit breaker operating shaft 100 is located above the disconnector operating shaft 200, the circuit breaker mechanism is also located above the disconnector mechanism, and the circuit breaker mechanism is located above one side of the housing 300 and is arranged close to the circuit breaker operating shaft 100, and the disconnector mechanism is located below the same side of the housing 300 where the circuit breaker mechanism is arranged and is arranged close to the disconnector operating shaft 200. The transmission assembly 500 is connected to the circuit breaker operating shaft 100 and cooperates with the circuit breaker operating shaft 100. When the fast circuit breaker is closed, the circuit breaker operating shaft 100 rotates counterclockwise and drives the interlocking member 400 to move toward the side close to the circuit breaker operating shaft 100 through the transmission assembly 500, so that the interlocking member 400 is staggered with the disconnector operating shaft 200, that is, the disconnector operating shaft 200 is exposed to the outside; when the fast circuit breaker is disconnected, the circuit breaker operating shaft 100 rotates clockwise and drives the interlocking member 400 to move toward the side close to the disconnector operating shaft 200 through the transmission assembly 500, so that the interlocking member 400 blocks the disconnector operating shaft 200 to prevent the operator from misoperating or restoring power to the equipment under unsafe conditions, thereby ensuring the safe operation of the power system.

[0033] In this embodiment, when the circuit breaker is closed or opened, the cooperation of the interlocking member 400, the transmission assembly 500 and the pre-existing circuit breaker operating shaft 100 helps to quickly unblock or block the disconnector operating shaft 200, so as to improve the overall reliability and safety of the power system. The structure is simple and easy to operate.

[0034] 1 and 2 , in some embodiments, the transmission assembly 500 includes a transmission member and a guide member, one end of the transmission member is connected to the circuit breaker operating shaft 100 , the other end of the transmission member is movably connected to the interlocking member 400 , and the guide member is slidably connected to one end of the interlocking member 400 away from the transmission member.

[0035] The transmission member includes a transmission arm 510, one end of which is fixedly connected to the circuit breaker operating shaft 100, and the other end of which is hinged to the interlocking member 400. The guide member is used to guide the lifting and lowering movement of the interlocking member 400 between the circuit breaker operating shaft 100 and the disconnector operating shaft 200.

[0036] Specifically, when the circuit breaker is closed, the circuit breaker operating shaft 100 rotates counterclockwise, and the circuit breaker operating shaft 100 drives the transmission arm 510 to rotate counterclockwise synchronously, and under the guidance and limiting action of the guide member, the transmission arm 510 drives the interlocking member 400 to move upward, that is, to the side away from the disconnector operating shaft 200. At this time, the disconnector operating shaft 200 is gradually exposed, and the power equipment is in a power-on state; when the circuit is disconnected, that is, the circuit breaker is in an open state, the circuit breaker operating shaft 100 rotates clockwise, and the circuit breaker operating shaft 100 drives the transmission arm 510 to rotate clockwise synchronously, and under the action of the guide member, the transmission arm 510 drives the interlocking member 400 to move downward, that is, to the side close to the disconnector operating shaft 200. At this time, the disconnector operating shaft 200 is gradually blocked by the interlocking member 400, and the power equipment is in a power-off state.

[0037] In this embodiment, the lifting and lowering of the interlocking member 400 is realized by the cooperation of the transmission arm 510, the circuit breaker operating shaft 100 and the guide member, that is, the interlocking member 400 is moved back and forth between the circuit breaker operating shaft 100 and the disconnector operating shaft 200, which has a simple structure and is easy to operate.

[0038] 1 and 2 , in some embodiments, the interlocking member 400 includes an interlocking plate 410 , and one end of the transmission arm 510 away from the circuit breaker operating shaft 100 is hinged to one end of the interlocking plate 410 close to the circuit breaker operating shaft 100 through an interlocking pin 420 .

[0039] In this embodiment, since the interlocking pin 420 is usually made of high-strength material, has good durability and stability, and can withstand the force and vibration during operation to avoid accidental loosening or falling off, the transmission arm 510 is hinged to the interlocking plate 410 through the interlocking pin 420, which helps to ensure the stability and reliability of the transmission arm 510 and the interlocking plate 410 when they are hinged, and facilitates adaptive adjustment of the angle between the interlocking plate 410 and the transmission arm 510 to adapt to different circuit breakers and disconnector mechanisms; and it is convenient for subsequent operators to inspect and replace the interlocking component 400 after long-term use.

[0040] Further, referring to Figures 2 and 3, the interlocking plate 410 includes an interlocking plate body 412 and a connecting rod 414, the connecting rod 414 is arranged at one end of the interlocking plate body 412 close to the circuit breaker operating axis 100, and the side wall of the connecting rod 414 close to the circuit breaker operating axis 100 and the end wall of the interlocking plate body 412 close to the circuit breaker operating axis 100 form a first corner 600.

[0041] Among them, the connecting rod 414 is fixedly connected to the right side of the top of the interlocking plate body 412 in the vertical direction, and an oblong hole 4140 is penetrated at one end of the connecting rod 414 close to the circuit breaker operating shaft 100. The interlocking pin 420 passes through the oblong hole 4140 and is hinged with the transmission arm 510 and the connecting rod 414.

[0042] Specifically, since the connecting rod 414 is fixedly arranged on the right side of the top of the interlocking plate body 412, when the circuit breaker operating shaft 100 rotates counterclockwise, under the guiding action of the guide member, the interlocking plate body 412 moves upward, that is, moves close to the side of the circuit breaker operating shaft 100, so that the disconnector operating shaft 200 is exposed; similarly, when the circuit breaker operating shaft 100 rotates clockwise, under the guiding action of the guide member, the interlocking plate body 412 moves downward, that is, moves close to the side of the disconnector operating shaft 200, so that the disconnector operating shaft 200 is blocked by the interlocking plate 410. In addition, in order to ensure the linkage effect, when the side surface area of ​​the interlocking plate body 412 facing or away from the side of the shell 300 is larger, or the length of the interlocking plate body 412 is longer, in order to avoid interference between the interlocking plate body 412 and the circuit breaker operating shaft 100 or the transmission arm 510 during the rotation of the transmission arm 510, the connecting rod 414 is fixedly set on the right side of the top of the interlocking plate body 412 to form a first corner 600.

[0043] In this embodiment, through the cooperation of the connecting rod 414 and the interlocking pin 420, while ensuring the stability and reliability of the hinge between the transmission arm 510 and the interlocking plate body 412, it helps to avoid interference between the interlocking plate body 412 and the transmission arm 510 or the circuit breaker operating shaft 100, thereby ensuring the smoothness of the rotation of the transmission arm 510, that is, it helps to ensure the smoothness of the lifting and lowering of the interlocking plate body 412.

[0044] Further, referring to Figures 1 and 2, the interlocking plate 410 also includes a connecting end plate 416, which is arranged at one end of the interlocking plate body 412 close to the circuit breaker operating shaft 100, and the connecting rod 414 is arranged on the end wall of the connecting end plate 416 close to the circuit breaker operating shaft 100, and the connecting end plate 416 and the interlocking plate body 412 enclose a receiving area 430 opposite to the shell 300.

[0045] The interlocking plate body 412 is parallel to the side wall of the housing 300 located on the side of the circuit breaker switch axis, the connecting end plate 416 is perpendicular to the side wall of the housing 300 located on the side of the circuit breaker switch axis, the connecting end plate 416 is arranged on the side wall of the interlocking plate body 412 close to the circuit breaker operating axis 100, and the connecting end plate 416 can be integrally formed with the interlocking plate body 412, and the longitudinal section of the whole after the connecting end plate 416 and the interlocking plate body 412 are integrally formed is L-shaped. The accommodating area 430 is arranged close to the isolating switch mechanism.

[0046] Specifically, since the isolating switch mechanism is relatively complex, the thickness of the portion of the isolating switch mechanism protruding from the outer wall of the shell 300 may be greater than the thickness of the portion of the fast circuit breaker mechanism protruding from the outer wall of the shell 300. Therefore, a connecting end plate 416 is provided to form a structure that can accommodate the portion of the isolating switch mechanism protruding from the outer wall of the shell 300 without affecting the synchronous lifting and lowering of the interlocking plate body 412 driven by the transmission arm 510.

[0047] In this embodiment, the connecting end plate 416 is connected to facilitate the fixing of the connecting rod 414, and the cooperation between the connecting end plate 416 and the interlocking plate body 412 is used to form an accommodating area 430, which helps to form a portion of the outer wall of the housing 300 that can accommodate the isolating switch mechanism without affecting the synchronous lifting and lowering of the interlocking plate body 412 driven by the transmission arm 510.

[0048] 2 , the interlock plate 410 further includes a baffle 418 , which is disposed at one end of the interlock plate body 412 close to the isolating switch operating shaft 200 , and the baffle 418 and the end wall of the interlock plate body 412 close to the isolating switch operating shaft 200 form a second corner 700 .

[0049] Specifically, the length of the baffle 418 is smaller than the length of the interlock plate body 412. When the baffle 418 moves downward synchronously with the interlock plate body 412, the baffle 418 will gradually cover the isolating switch operating shaft 200. When the baffle 418 moves upward synchronously with the interlock plate body 412, the isolating switch operating shaft 200 will gradually be exposed to facilitate operation by the operator.

[0050] In this embodiment, by setting the baffle 418, while ensuring that the interlocking plate body 412 can move synchronously with the transmission arm 510 driven by the connecting rod 414, it helps to reduce the material of the interlocking member 400 required to block the isolating switch operating shaft 200, thereby helping to save costs.

[0051] 2 and 3 , a limiting slide hole 4120 is provided through one end of the interlocking plate body 412 close to the baffle 418, and the guide member includes an interlocking shaft 520, one end of which is arranged on the outer wall of the shell 300, and the other end of the interlocking shaft 520 passes through the limiting slide hole 4120 and is slidably connected with the hole wall of the limiting slide hole 4120.

[0052] Specifically, the aperture of the limiting sliding hole 4120 is larger than the cross-sectional diameter of the interlocking shaft 520 , and the limiting sliding hole 4120 is an oblong sliding hole.

[0053] In this embodiment, when the circuit breaker operating shaft 100 drives the transmission arm 510 to rotate, with the cooperation of the interlocking shaft 520 and the limiting sliding hole 4120, the interlocking component 400 follows the connecting rod 414 to rise and fall synchronously, so that when the circuit breaker is closed or opened, the isolating switch operating shaft 200 can be quickly unblocked or blocked, thereby improving the overall reliability and safety of the power system.

[0054] 2 and 4 , one end of the interlocking shaft 520 close to the housing 300 is detachably connected to the housing 300 .

[0055] Among them, one end of the interlocking shaft 520 close to the shell 300 is detachably connected to the outer wall of the shell 300 on the side of the isolating switch operating shaft 200, and the detachable connection method includes but is not limited to threaded connection, screw connection, snap-on movable connection, clamp connection, flange connection, pin interactive movable connection, etc. In this embodiment, taking threaded connection as an example, the end of the interlocking shaft 520 close to the shell 300 is replaced with a thread, so that the interlocking shaft 250 can be threadedly connected to the outer wall of the shell 300 on the side of the isolating switch operating shaft 200.

[0056] Specifically, although the interlocking component 400 can be raised and lowered through the cooperation of the transmission arm 510, the connecting rod 414 and the interlocking shaft 520, the loss caused by the sliding friction between the interlocking shaft 520 and the baffle 418 will gradually increase with long-term use, resulting in a reduction in the reliability of the mechanical interlocking function of the interlocking device. Therefore, the connection between the interlocking shaft 520 and the housing 300 is set to a detachable connection so that the operator can replace the interlocking shaft 520 that is severely worn in time.

[0057] In this embodiment, by setting the connection method between the interlock shaft 520 and the shell 300 to be a detachable connection, it is convenient for the operator to replace the interlock shaft 520 that is severely worn in time, thereby ensuring that when the circuit breaker is closed or opened, the disconnector operating shaft 200 is quickly unblocked or blocked, thereby ensuring the reliability of the mechanical interlocking function of the interlocking device.

[0058] 2 and 4 , one end of the interlocking shaft 520 extending out of the limiting sliding hole 4120 is provided with a thread groove 522 for matching with the nut 800 .

[0059] Specifically, a thread groove 522 is provided on the end wall of the interlocking shaft 520 extending out of the limiting sliding hole 4120. The thread groove 522 is adapted to the existing nut 800. When the nut 800 is threadedly tightened in the thread groove 522, the side wall of the nut 800 close to the baffle 418 abuts against the baffle 418, so that the contact area between the baffle 418 and the interlocking shaft 520 increases during the movement of the interlocking plate 410, thereby helping to increase the sliding friction between the baffle 418 and the interlocking shaft 520, and further helping to improve the stability of the interlocking shaft 520 in guiding and limiting the interlocking plate 410 when it follows the movement of the circuit breaker operating shaft 100.

[0060] In this embodiment, a threaded groove 522 adapted to the existing nut 800 is provided on the end wall of the interlocking shaft 520 away from the end detachably connected to the shell 300, which helps to increase the contact area between the baffle 418 and the interlocking shaft 520, thereby increasing the sliding friction between the interlocking shaft 520 and the baffle 418, and further improving the stability of the interlocking shaft 520 when guiding and limiting the interlocking plate 410; and helps to ensure that when the circuit breaker is closed or opened, the isolating switch operating shaft 200 is quickly unblocked or blocked, so as to ensure the reliability of the mechanical interlocking function of the interlocking device, thereby ensuring the reliability and safety of the power system as a whole.

[0061] When the fast circuit breaker is closed, the circuit breaker operating shaft 100 rotates counterclockwise, and through the cooperation of the transmission arm 510 and the interlocking shaft 520, the baffle 418 on the interlocking plate 410 is driven to move toward the side close to the circuit breaker operating shaft 100 until the baffle 418 is exposed to the outside, so that the operator can perform the next operation on the circuit breaker; when the fast circuit breaker is opened, the circuit breaker operating shaft 100 rotates clockwise, and through the cooperation of the transmission arm 510 and the interlocking shaft 520, the baffle 418 on the interlocking plate 410 is driven to move toward the side close to the circuit breaker operating shaft 100. The baffle 418 moves away from one side of the disconnect operating shaft 200 to block the disconnect switch operating shaft 200 to prevent the operator from operating it by mistake or restoring power to the equipment under unsafe conditions, thereby ensuring the safe operation of the power system; when the circuit breaker is closed or opened, the cooperation of the interlocking member 400, the transmission assembly 500 and the pre-existing circuit breaker operating shaft 100 helps to quickly unblock or block the disconnect switch operating shaft 200 to improve the overall reliability and safety of the power system, with a simple structure and easy operation.

[0062] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0063] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An interlocking device, which is applied between a circuit breaker operating shaft of a matching fast circuit breaker mechanism and an isolating switch operating shaft of an isolating switch mechanism, wherein the circuit breaker operating shaft and the isolating switch operating shaft are both rotatably arranged on the outer side wall of the same side of a housing, characterized in that: The interlocking device includes: a portion provided on the outer side wall of the housing on one side of the circuit breaker operating shaft; An interlocking member, the interlocking member being located between the circuit breaker operating shaft and the disconnector operating shaft; A transmission assembly cooperates with the circuit breaker operating shaft, and driven by the circuit breaker operating shaft, the transmission assembly drives the interlocking piece to move between the circuit breaker operating shaft and the disconnector operating shaft. When the fast circuit breaker is closed, the circuit breaker operating shaft drives the interlocking piece to move toward a side close to the circuit breaker operating shaft through the transmission assembly until the disconnector operating shaft is exposed; when the fast circuit breaker is opened, the circuit breaker operating shaft drives the interlocking piece to move toward a side close to the disconnector operating shaft through the transmission assembly until the interlocking piece blocks the disconnector operating shaft.

2. The interlocking device according to claim 1, characterized in that: The transmission assembly includes a transmission member and a guide member, one end of the transmission member is connected to the circuit breaker operating shaft, the other end of the transmission member is movably connected to the interlocking member, and the guide member is slidably connected to one end of the interlocking member away from the transmission member.

3. The interlocking device according to claim 2, characterized in that: The transmission member comprises a transmission arm, one end of which is connected to the circuit breaker operating shaft, and the other end of which is hinged to the interlocking member.

4. The interlocking device according to claim 3, characterized in that: The interlocking member comprises an interlocking plate, and one end of the transmission arm away from the circuit breaker operating shaft is hinged to one end of the interlocking plate close to the circuit breaker operating shaft through an interlocking pin.

5. The interlocking device according to claim 4, characterized in that: The interlocking plate includes an interlocking plate body and a connecting rod, wherein the connecting rod is arranged at one end of the interlocking plate body close to the circuit breaker operating shaft, and the side wall of the connecting rod close to the circuit breaker operating shaft and the end wall of the interlocking plate body close to the circuit breaker operating shaft form a first corner.

6. The interlocking device according to claim 5, characterized in that: The interlocking plate also includes a connecting end plate, which is arranged at one end of the interlocking plate body close to the circuit breaker operating shaft, and the connecting rod is arranged on the end wall of the connecting end plate close to the circuit breaker operating shaft. The connecting end plate and the interlocking plate body enclose a accommodating area opposite to the shell.

7. The interlocking device according to claim 4, characterized in that: The interlocking plate further comprises a baffle, which is arranged at one end of the interlocking plate body close to the isolating switch operating shaft, and the baffle and the end wall of the interlocking plate body close to the isolating switch operating shaft form a second corner.

8. The interlocking device according to claim 7, characterized in that: A limiting sliding hole is penetrated through one end of the interlocking plate body close to the baffle, and the guide member includes an interlocking shaft, one end of which is arranged on the outer wall of the shell, and the other end of the interlocking shaft passes through the limiting sliding hole and is slidably connected with the hole wall of the limiting sliding hole.

9. The interlocking device according to claim 8, characterized in that: One end of the interlocking shaft close to the housing is detachably connected to the housing.

10. The interlocking device according to claim 8, characterized in that: One end of the interlocking shaft extending out of the limiting sliding hole is provided with a thread groove for matching with a nut.

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