A phase selection switch operating mechanism

Abstract

The application discloses a phase selector switch operating mechanism, which comprises an operating panel, an isolation operating shaft, a grounding operating shaft, interlocking part one and interlocking part two, the isolation operating shaft and the grounding operating shaft are arranged on the operating panel, the interlocking part one is installed on the isolation operating shaft, the interlocking part two is installed on the grounding operating shaft, and the interlocking part one and the interlocking part two are matched through a limiting structure. The application has the beneficial effects that: through the interlocking part one, the interlocking part two and the limiting structure, when the isolation switch is closed, the interlocking part one matched with the limiting structure can block and lock the grounding operating shaft; when the grounding switch is closed, the interlocking part two matched with the limiting structure can block and lock the isolation operating shaft; and thus, the double locking function is realized, and the safety of the switch equipment is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical switching device, in particular to a phase selector switch operating mechanism. BACKGROUND

[0002] The phase selector switch (also known as intelligent synchronous switch) is a device for realizing intelligent switching control of circuit, mainly used for switching capacitor or synchronous operation. The intelligent phase selector switch controls the electromagnet through the microprocessor to switch the capacitor at zero crossing of the main circuit, thereby reducing the inrush current and voltage fluctuation, and improving the operation efficiency and stability of the device.

[0003] In order to realize the diversification of the function of the switching device, the existing part of the phase selector (circuit breaker) switch also integrates the functions of the grounding switch and the disconnector; in order to improve the safety of the switching device, interlocking is required between each switch, for example: when the circuit breaker is closed, it is necessary to prevent the misoperation of the grounding switch and the disconnector when electrified, otherwise it will cause safety accidents. The existing method mainly adopts electrical interlocking and mechanical interlocking, the electrical interlocking is easy to cause circuit failure, which has high safety hidden danger; and the existing mechanical interlocking method is relatively simple, that is, only the corresponding switch operating port can be locked and the operating handle cannot be inserted, and the safety performance is not high enough. Therefore, how to improve the existing mechanical interlocking to make the safety of the switching device better is a problem to be solved by the person skilled in the art. SUMMARY

[0004] One of the purposes of the present application is to provide a phase selector switch operating mechanism with good interlocking effect.

[0005] In order to achieve the above purposes, the technical scheme adopted by the present application is: a phase selector switch operating mechanism, comprising an operating panel, an isolation operating shaft, a grounding operating shaft, an interlocking piece one and an interlocking piece two, the isolation operating shaft and the isolation operating shaft are arranged on the operating panel, the interlocking piece one is installed on the isolation operating shaft, and the interlocking piece two is installed on the grounding operating shaft; the interlocking piece one and the interlocking piece two are matched through a limiting structure; when the disconnector is closed, the interlocking piece one is suitable for plugging the grounding operating shaft, and the interlocking piece two is suitable for being locked under the action of the limiting structure, so that the grounding operating shaft is in a locked and inoperable state; when the grounding switch is closed, the interlocking piece two is suitable for plugging the isolation operating shaft, and the interlocking piece one is suitable for being locked under the action of the limiting structure, so that the isolation operating shaft is in a locked and inoperable state.

[0006] Preferably, the interlocking part one comprises an interlocking disc one and a baffle one, the interlocking disc one is sleeved and installed on the isolating operating shaft, and the baffle one is installed on the interlocking disc one; the interlocking part two comprises an interlocking disc two and a baffle two, the interlocking disc two is sleeved and installed on the grounding operating shaft, and the baffle two is installed on the interlocking disc two; the interlocking disc one and the interlocking disc two are matched through the limiting structure; when the isolating switch is closed, the isolating operating shaft is adapted to drive the baffle one to rotate through the interlocking disc one until the grounding operating shaft is blocked, at this time, the interlocking disc one is adapted to make the interlocking disc two be locked through the limiting structure; when the grounding switch is closed, the grounding operating shaft is adapted to drive the baffle two to rotate through the interlocking disc two until the isolating operating shaft is blocked, at this time, the interlocking disc two is adapted to make the interlocking disc one be locked through the limiting structure.

[0007] Preferably, the limiting structure comprises a notch one arranged on the outer part of the interlocking disc one and a notch two arranged on the outer part of the interlocking disc two; when the isolating switch is in the closed state, the interlocking disc one is matched with the notch two, thereby locking the grounding operating shaft in the circumferential direction; when the grounding switch is in the closed state, the interlocking disc two is matched with the notch one, thereby locking the isolating operating shaft in the circumferential direction.

[0008] Preferably, the operating panel is provided with a circuit breaker opening and closing indication and an interlocking plate one, the interlocking plate one is slidingly arranged on the operating panel; when the circuit breaker switch is closed, the circuit breaker opening and closing indication is adapted to abut against one end of the interlocking plate one and lock the interlocking plate one, so that the other end of the interlocking plate one blocks the isolating operating shaft.

[0009] Preferably, the operating panel is slidingly provided with an interlocking plate two, the end part of the interlocking plate two is provided with a lock pin of a switch chamber door plate, and the interlocking plate two is matched with the interlocking disc two; when the grounding switch is opened, the interlocking disc two is adapted to lock the interlocking plate two, at this time, the switch chamber door plate is in the locked state under the action of the lock pin; when the grounding switch is closed, the interlocking disc two is adapted to release the locking of the interlocking plate two, at this time, the interlocking plate two is adapted to drive the lock pin to move and release the locking of the switch chamber door plate.

[0010] Preferably, the bottom end of the interlocking plate two is inwardly bent to form a blocking strip, and the outer periphery of the interlocking disc two is provided with a protruding part; when the blocking strip is matched with the protruding part, the interlocking plate two is in the locked state; when the blocking strip is out of position with the protruding part, the interlocking plate two is in the unlocked state; when the blocking strip is matched with the notch two, the grounding operating shaft is locked in the circumferential direction, and at this time, the interlocking plate two is adapted to block the grounding operating shaft.

[0011] Preferably, a circuit breaker transmission shaft is arranged on the operation panel, a circuit breaker on-off indication is installed on the circuit breaker transmission shaft, the circuit breaker transmission shaft cooperates with a circuit breaker main shaft of a circuit breaker switch through a connecting rod assembly, the connecting rod assembly is connected with a frame of the circuit breaker switch through elastic members; when the circuit breaker switch is normally opened and closed, the circuit breaker main shaft is adapted to be in abutting state with an insulating pull rod of the circuit breaker switch under the action of the elastic members, and then the circuit breaker on-off indication is used to display the opening and closing state of the circuit breaker switch; when the circuit breaker is urgently opened, the circuit breaker transmission shaft is operated and the circuit breaker main shaft is driven to rotate under the action of the connecting rod assembly, and then the insulating pull rod is forced to move to realize the emergency opening of the circuit breaker switch.

[0012] Preferably, the connecting rod assembly comprises an upper crank arm, a connecting rod and a lower crank arm, the upper crank arm is installed at the end of the circuit breaker main shaft, the lower crank arm is installed at the end of the circuit breaker transmission shaft, the two ends of the connecting rod are respectively hinged with the upper crank arm and the lower crank arm, and the lengths of the lower crank arm, the upper crank arm and the connecting rod are sequentially increased; when the emergency opening is performed, the lower crank arm is adapted to rotate under the action of the circuit breaker transmission shaft, and then the connecting rod is pulled to drive the upper crank arm and the circuit breaker main shaft to synchronously rotate.

[0013] Preferably, an elbow block is fixedly connected to the outside of the circuit breaker main shaft, and a pin is arranged on the outside of the insulating pull rod; when the circuit breaker switch is normally opened and closed, the elbow block is adapted to be in abutting state with the pin under the action of the elastic force of the elastic members; when the emergency opening is performed, the elbow block is adapted to rotate under the driving of the circuit breaker main shaft and then pull the pin to drive the insulating pull rod to move.

[0014] Preferably, a counter and an electromagnetic lock are further installed on the operation panel, the counter cooperates with the circuit breaker on-off indication to record the opening and closing times of the circuit breaker switch, and the electromagnetic lock is interlocked with the grounding operation shaft.

[0015] Compared with the prior art, the application has the beneficial effects that:

[0016] The application has the beneficial effects that: BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the application.

[0018] Figure 2 The schematic diagram of the amplification structure of A in the application.

[0019] Figure 3 The schematic diagram of the partial structure in the application. Figure 1

[0020] Figure 4 The schematic diagram of the isolating switch closing, vacuum arc chamber closing and grounding switch opening state in the application.

[0021] Figure 5 The schematic diagram of the isolating switch opening, vacuum arc chamber opening and grounding switch closing state in the application.

[0022] Figure 6 The schematic diagram of the three-dimensional structure of the operating mechanism in the application.

[0023] Figure 7 The schematic diagram of the front view structure of the operating mechanism in the application.

[0024] Figure 8 The schematic diagram of the internal structure of the operating mechanism in the application.

[0025] Figure 9 The schematic diagram of the two interlocking pieces when the circuit breaker closing, the isolating switch closing and the grounding switch opening in the application.

[0026] Figure 10 The schematic diagram of the two interlocking plates in the application.

[0027] Figure 11 The schematic diagram of the structure when the blocking strip and the convex part cooperate in the application.

[0028] Figure 12 The schematic diagram of the structure of the two interlocking pieces when the circuit breaker opening, the isolating switch opening and the grounding switch opening in the application.

[0029] Figure 13 The schematic diagram of the top view structure of the operating mechanism in the application.

[0030] Figure 14 The schematic diagram of the cooperation state of the two interlocking plates when the isolating switch closing and the grounding switch opening in the application.

[0031] Figure 15 The schematic diagram of the cooperation state of the two interlocking plates when the isolating switch opening and the grounding switch closing in the application.

[0032] ​In the figure: 1, frame; 2, circuit breaker switch; 201, insulating pull rod; 202, vacuum arc extinguishing chamber; 203, transmission crank arm; 204, permanent magnet mechanism; 3, disconnecting switch; 301, isolation knife switch; 302, isolation static contact; 4, grounding switch; 401, grounding knife switch; 5, operation panel; 6, circuit breaking main shaft; 7, crank block; 8, pin; 9, circuit breaking transmission shaft; 10, reset tension spring; 11, connecting rod assembly; 1101, upper crank arm; 1102, connecting rod; 1103, lower crank arm; 12, insulator; 13, connecting copper bar; 14, cover body; 15, isolation operation port; 16, grounding operation port; 17, electromagnetic lock; 18, lock pin; 19, lock catch; 20, circuit breaker opening and closing indication; 21, interlocking plate one; 22, interlocking plate two; 2201, blocking strip; 23, interlocking piece one; 2301, interlocking disc one; 2302, baffle one; 24, interlocking piece two; 2401, interlocking disc two; 2402, baffle two; 25, counter; 26, isolation operation shaft; 27, grounding operation shaft; 28, protruding part; 29, switch chamber door plate; 30, limiting structure; 3001, notch one; 3002, notch two; 31, emergency opening port. DETAILED DESCRIPTION

[0033] Hereinafter, the present application will be further described in conjunction with specific embodiments. It should be noted that, under the premise of no conflict, the embodiments described below or the technical features between the embodiments can be combined in any manner to form new embodiments.

[0034] In the description of the present application, it should be noted that, for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0036] The switch device of the present application is described in detail as follows: Figure 1As shown, the circuit breaker switch 2, the disconnector switch 3 and the grounding switch 4 are installed on the frame 1, and of course, the three groups of switches are installed in multiple groups and arranged side by side; the circuit breaker switch 2 is installed at the upper position, including a vacuum arc-extinguishing chamber 202 (which has a moving contact and a static contact), a permanent magnet mechanism 204 (or a magnetic control mechanism), an insulating pull rod 201 and a transmission crank arm 203, as shown in Figure 4 As shown, the permanent magnet mechanism 204 is installed at the top end position of the frame 1, the vacuum arc-extinguishing chamber 202 is installed above the frame 1 and below the permanent magnet mechanism 204, the left end of the insulating pull rod 201 is rotatably connected with the driving end of the permanent magnet mechanism 204 through a pin 8, the right end of the insulating pull rod 201 is connected with the moving contact through the transmission crank arm 203, the transmission crank arm 203 is rotatably installed at the right end position of the vacuum arc-extinguishing chamber 202 through the middle part, the bottom end of the transmission crank arm 203 is movably connected with the moving contact (for example, the cooperation mode of the pin and the slot), and the top end of the transmission crank arm 203 is hingedly connected with the second end of the insulating pull rod 201; it can be understood that when closing, the permanent magnet mechanism 204 drags the insulating pull rod 201 to move through the internal moving core rod, the insulating pull rod 201 acts on the transmission crank arm 203 to rotate, and the rotation of the transmission crank arm 203 drives the moving contact and the static contact to open and close.

[0037] As shown, Figure 4 The disconnector switch 3 is installed on the left side of the frame 1, mainly including an isolation knife switch 301 and an isolation static contact 302, wherein the top end of the isolation knife switch 301 is rotatably installed at the static contact position of the vacuum arc-extinguishing chamber 202, and the isolation static contact 302 can be installed at the lower left position of the frame 1 through an insulator 12. The grounding switch 4 mainly includes a grounding knife switch 401, which is rotatably installed at the lower right position of the frame 1, and a connecting copper bar 13 is installed at the middle right side of the frame 1 through an insulator 12, which can be connected with the moving contact through a soft connection, as shown in Figure 4 As shown, the disconnector switch 3 is closed, the vacuum arc-extinguishing chamber 202 is closed, and the grounding switch 4 is open; as shown in Figure 5 As shown, the disconnector switch 3 is open, the vacuum arc-extinguishing chamber 202 is open, and the grounding switch 4 is closed.

[0038] It should be noted that how the operating mechanism installed beside the frame 1 opens and closes the disconnector switch 3 and the grounding switch 4 is also the public common knowledge of those skilled in the art, so the specific structure and principle of the operating mechanism will not be described in detail. The switch set combines the (selective) circuit breaker switch 2, the disconnector switch 3 and the grounding switch 4 three functions, among which the circuit breaker switch 2 is electrically controlled, and the disconnector switch 3 and the grounding switch 4 are mechanically opened and closed by the operating mechanism, so the limit interlocking between the disconnector switch 3 and the grounding switch 4 is crucial.

[0039] The inventor of the present application develops a phase selection switch operating mechanism, one embodiment of which is shown in the accompanying drawings as Figures 1 to 15 As shown in the drawings, the operating mechanism comprises an operating panel 5, an isolation operating shaft 26, a grounding operating shaft 27, an interlock piece one 23 and an interlock piece two 24, wherein the isolation operating shaft 26 and the grounding operating shaft 27 are both arranged on the operating panel 5, the interlock piece one 23 is installed on the isolation operating shaft 26, the interlock piece two 24 is installed on the grounding operating shaft 27, and the interlock piece one 23 cooperates with the interlock piece two 24 through a limiting structure 30. It should be understood that the isolation operating shaft 26 and the grounding operating shaft 27 can operate the corresponding isolation switch 3 and grounding switch 4 under the action of an operating handle, which is also common sense known to those skilled in the art.

[0040] It can be understood that when the isolation switch 3 is closed, the interlock piece one 23 can block the grounding operating shaft 27 (i.e., block the isolation operating port 15 on the operating panel 5) under the action of the isolation operating shaft 26, and the interlock piece two 24 is locked under the action of the limiting structure 30, so that the grounding operating shaft 27 is in a locked and inoperable state. Conversely, when the isolation switch 3 is opened, the grounding operating shaft 27 is unblocked and locked. Then, the grounding operating shaft 27 is inserted into the operating handle to close the grounding switch 4, the interlock piece two 24 can block the isolation operating shaft 26 (i.e., block the grounding operating port 16 on the operating panel 5) under the action of the grounding operating shaft 27, and the interlock piece one 23 is locked under the action of the limiting structure 30, so that the isolation operating shaft 26 is in a locked and inoperable state.

[0041] As can be seen, through the cooperation of the interlock piece one 23, the interlock piece two 24 and the limiting structure 30, interlocking between the isolation switch 3 and the grounding switch 4 can be achieved. When interlocking, not only can the other operating shaft be blocked so that the operating handle cannot be inserted, but also it can be locked, i.e., a double locking function, further improving the safety of the switch device.

[0042] The present application does not limit the specific structure of the interlock piece one 23 and the interlock piece two 24, and the following provides one specific embodiment for reference:

[0043] As Figure 9 and Figure 12As shown, the interlocking piece one 23 includes an interlocking disc one 2301 and a baffle one 2302, the interlocking disc one 2301 is fixedly sleeved and installed at the end of the isolation operation shaft 26, and the baffle one 2302 is installed outside the interlocking disc one 2301. The interlocking piece two 24 includes an interlocking disc two 2401 and a baffle two 2402, the interlocking disc two 2401 is fixedly sleeved and installed at the end of the grounding operation shaft 27, and the baffle two 2402 is installed outside the interlocking disc two 2401; the interlocking disc one 2301 and the interlocking disc two 2401 are matched through the limiting structure 30.

[0044] It can be understood that when the disconnector 3 is closed, that is, the isolation operation shaft 26 is rotated by operating the handle, and then the interlocking disc one 2301 is rotated and simultaneously drives the baffle one 2302 to rotate synchronously, so that the baffle one 2302 blocks the grounding operation shaft 27, so that the operating handle cannot be inserted into the grounding operation shaft 27; and at this time, the interlocking disc one 2301 can also lock the interlocking disc two 2401 through the limiting structure 30, that is, double locking of the grounding operation shaft 27 is realized. Similarly, when the grounding switch 4 is closed, the rotation of the interlocking disc two 2401 can realize double locking of the isolation operation shaft 26.

[0045] As a further description of the above embodiment, as shown in Figure 14 and Figure 15 As shown, the limiting structure 30 includes a notch one 3001 arranged outside the interlocking disc one 2301 and a notch two 3002 arranged outside the interlocking disc two 2401.

[0046] It can be understood that, as shown in Figure 14 At this time, the disconnector 3 is in the closed state, the notch two 3002 of the interlocking disc two 2401 is in the corresponding matching state with the interlocking disc one 2301, so that the interlocking disc two 2401 cannot rotate due to the blocking and limiting of the interlocking disc one 2301, and the interlocking disc two 2401 is fixedly connected with the grounding operation shaft 27, so that the grounding operation shaft 27 is in the locked state and cannot rotate. Similarly, as shown in Figure 15 When the grounding switch 4 is in the closed state, the interlocking disc two 2401 matches with the notch one 3001, so that the isolation operation shaft 26 is in the locked state and cannot rotate.

[0047] Further, as shown in Figure 9 The operating panel 5 is also provided with a circuit breaker opening and closing indication 20 and an interlocking plate one 21, and the interlocking plate one 21 is slidingly arranged on the operating panel 5; it should be known that the circuit breaker opening and closing indication 20 displays the opening and closing state of the circuit breaker switch 2, that is, the circuit breaker opening and closing indication 20 moves (for example, rotates or translates) with the opening and closing action of the circuit breaker switch 2, which is also a common structure design in switch equipment.

[0048] Specifically, the interlocking plate 21 is vertically slidably mounted on the operation panel 5. The top of the interlocking plate 21 corresponds to the circuit breaker open / close indicator 20, and the bottom of the interlocking plate 21 corresponds to the isolating operating shaft 26. When the circuit breaker switch 2 is in the closed position, the circuit breaker open / close indicator 20 is abutted against the top of the interlocking plate 21, and the interlocking plate 21 is in its lowest position, thus locking the interlocking plate 21. The bottom of the interlocking plate 21 also blocks the isolating operating shaft 26, preventing the interlocking plate 21 from sliding upwards to expose and open the isolating operating shaft 26 (or the isolating operating port 15). When circuit breaker switch 2 is open, the circuit breaker open / close indicator 20 will move away from the interlocking plate 21, which will then move the interlocking plate 21 upwards to expose and open the isolating operating shaft 26. This achieves the interlocking requirement of preventing accidental operation of the grounding switch 4 and isolating switch 3 when circuit breaker switch 2 is closed.

[0049] Furthermore, such as Figure 12 As shown, an interlocking plate 22 can also be horizontally slidably installed on the operation panel 5. A locking pin 18 of the switch room door panel 29 is installed at the end of the interlocking plate 22, and the interlocking plate 22 cooperates with the interlocking disc 2401.

[0050] Understandably, when grounding switch 4 is closed, interlocking disc 2401 can release the lock on interlocking plate 22, meaning that locking pin 18 can move left and right at this time. This allows the switch compartment door 29 to be opened through the cooperation of locking pin 18 and latch 19; simultaneously, baffle 2402 can also lock the isolating operating shaft 26. Conversely, if grounding switch 4 is in the open state, such as... Figure 11 As shown, interlocking disc 2401 will lock interlocking plate 22, specifically as follows: Figure 10 As shown, one side of the bottom end of the second interlocking plate 22 is bent inward to form a stop bar 2201, and a protrusion 28 is provided on the outer periphery of the second interlocking disc 2401; that is, the stop bar 2201 on the second interlocking plate 22 and the protrusion 28 on the second interlocking disc 2401 are in a corresponding mating state (e.g., Figure 14 As shown in the diagram below, this puts the interlocking plate 22 in a locked state, meaning the locking pin 18 cannot move left or right. At this time, the locking pin 18 engages with the latch 19 to lock the switch room door 29, preventing it from opening. This achieves the interlocking requirement that the door can only be opened when the grounding switch 4 is closed, in addition to the five-proof interlocking, further improving safety.

[0051] Specifically, such as Figure 15 The following image and Figure 13As shown, after the grounding switch 4 is closed, the interlocking plate 22 needs to be pushed to the left to separate the locking pin 18 and the latch 19, so that the switch compartment door 29 can be opened. At this time, the interlocking plate 22 is in a blocked state for the grounding operation port 16, thus sealing the grounding switch 4. The locking pin inside the latch 19 will pop out under the action of the spring force and limit the position of the locking pin 18, so that the interlocking plate 22 remains in a blocked state for the grounding operation port 16. Only when the switch compartment door 29 is closed will the switch compartment door 29 push the locking pin inside the latch 19 inward, thereby releasing the limit on the locking pin 18. At this time, the locking pin 18 can be moved to the right by the interlocking plate 22 and enter the corresponding pin hole on the latch 19 and the switch compartment door 29, so that the grounding operation port 16 can be exposed for operation. In summary, the switch compartment door 29 can only be opened when the grounding switch 4 is closed; the grounding switch 4 can only be operated when the switch compartment door 29 is closed.

[0052] For ease of understanding, the specific working principles of interlocking component 1 23, interlocking component 24, and limiting structure 30 are explained below:

[0053] ① Initial state (i.e., energized state): such as Figure 9 As shown, circuit breaker 2 is in the closed state, the top of interlocking plate 21 is blocked by the circuit breaker open / close indicator 20 and cannot move upward, and the bottom of interlocking plate 21 blocks the isolating operation port 15; at this time, isolating switch 3 is in the closed state, and grounding switch 4 is in the open state. Figure 14 As shown in the diagram above, interlocking disc 2301 is located within the notch 3002 of interlocking disc 2401, thereby locking interlocking disc 2401; as Figure 14 As shown in the figure below, the baffle 2302 blocks the grounding operation port 16, and the protrusion 28 corresponds to the baffle 2201. At this time, the interlocking plate 22 is in a limited position, that is, the locking pin 18 cannot move horizontally to open the switch room door 29.

[0054] ② Power-off grounding operation: such as Figure 12 As shown, when circuit breaker switch 2 is open, the circuit breaker open / close indicator 20 rotates counterclockwise upwards, thereby releasing the limit on interlock plate 21. Then, interlock plate 21 can be moved upwards and lifted to expose the isolating operating port 15. The operating handle is then inserted into the isolating operating port 15, and the isolating operating shaft 26 is used to open disconnect switch 3. When disconnect switch 3 is in the open state, as... Figure 15 As shown in the diagram below, the baffle 2302 will rotate counterclockwise, exposing the grounding operating shaft 27. Then, the operating handle is inserted into the grounding operating port 16, thereby closing the grounding switch 4 via the grounding operating shaft 27. Figure 15As shown in the diagram above, interlocking disc 2401 is located in the notch 3001 of interlocking disc 2301, thereby locking interlocking disc 2301; as Figure 15 As shown in the figure below, the baffle 2402 blocks the isolation operation port 15, and at this time the protrusion 28 and the baffle 2201 are misaligned (that is, the baffle 2201 and the notch 2002 are in a corresponding state), which can push the interlock plate 22 to drive the locking pin 18 to move and open the switch room door 29.

[0055] It is worth mentioning that both interlocking disc 1 (2301) and interlocking disc 2 (2401) have simple structures, are easy to process and manufacture, and reduce production costs. Of course, corresponding "open" and "closed" markings can be engraved on their exteriors to indicate the open / closed status of the corresponding switches, meaning the interlocking discs can also function as open / closed indicators. Furthermore, as mentioned above, the protrusion 28 on interlocking disc 2 (2401) cooperates with the stop bar 2201 on the interlocking plate. Therefore, interlocking disc 1 (2301) does not need to have a protrusion 28. However, for ease of processing and installation, the two interlocking discs can be manufactured identically, as the protrusion 28 is relatively small, minimizing material waste. Both can share a single mold for production, and there is no need to distinguish them during installation and subsequent maintenance and replacement, greatly improving convenience. Additionally, baffle 1 (2302) and baffle 2 (2402) preferably adopt the same shape and size.

[0056] In this embodiment, as Figure 8 As shown, the phase selection switch operating mechanism also includes a circuit breaker drive shaft 9 disposed on the operating panel 5. The circuit breaker open / close indicator 20 is mounted on the circuit breaker drive shaft 9. The circuit breaker drive shaft 9 and the circuit breaker main shaft 6 of the circuit breaker switch 2 are connected via a connecting rod assembly 11. The connecting rod assembly 11 and the frame 1 of the circuit breaker switch 2 are connected via an elastic element. Figure 2 As shown, multiple crank arm blocks 7 are provided on the outside of the circuit breaking main shaft 6 to cooperate with the corresponding insulating tie rod 201, and the pins 8 mentioned above cooperate with the crank arm blocks 7.

[0057] Specifically, such as Figure 3 As shown, the linkage assembly 11 includes an upper crank arm 1101, a lower crank arm 1103, and a connecting rod 1102. The upper crank arm 1101 is fixedly installed at the end of the circuit-breaking main shaft 6, and the lower crank arm 1103 is fixedly installed at the inner end of the circuit-breaking transmission shaft 9. The two ends of the connecting rod 1102 are hinged to the upper crank arm 1101 and the lower crank arm 1103, respectively. The connecting rod 1102 is the longest, the upper crank arm 1101 is the second longest, and the lower crank arm 1103 is the shortest.

[0058] It is understandable that in the initial state, such as Figure 3As shown, the lower crank arm 1103 moves horizontally to the right, and the upper crank arm 1101 is located at the lower left of the circuit breaker main shaft 6. When the emergency opening is performed, the cover 14 on the circuit breaker transmission shaft 9 is first opened to expose the emergency opening port 31 on the operation panel 5, and then the operation handle is inserted to rotate the circuit breaker transmission shaft 9 counterclockwise. The lower crank arm 1103 acts on the connecting rod 1102 to move upward, and the connecting rod 1102 can push the upper crank arm 1101 to rotate clockwise, as shown in Figure 2 As shown, the circuit breaker main shaft 6 can be rotated clockwise under the action of the upper crank arm 1101, thereby driving the crank block 7 to press the pin 8, so that the insulation pull rod 201 is forced to move in the direction of opening, that is, it can overcome the suction force of the permanent magnet mechanism 204, so that the moving iron core is forced to separate from the static iron core, and then the moving and static contacts can be opened under the action of the opening spring in the circuit breaker.

[0059] It should be noted that the emergency opening mechanism is similar to a force-saving lever, that is, through the transmission of the connecting rod 1102, the input torque (lower crank arm 1103) can generate a larger effective torque at the output end (upper crank arm 1101), thereby generating a larger rotating torque on the circuit breaker main shaft 6. In fact, the circuit breaker transmission shaft 9 needs to rotate more angles to drive the circuit breaker main shaft 6 to rotate a smaller angle, that is, the speed / displacement is sacrificed to exchange for force amplification. It should be understood that the permanent magnet mechanism 204 needs to overcome the elastic force of the opening spring when closing, and at this time the driving of the circuit breaker main shaft 6 can force the moving iron core of the permanent magnet mechanism 204 to separate, thereby destroying the closing state, and then under the action of the opening spring, the circuit breaker can be quickly and urgently opened.

[0060] Further, as shown in Figure 3 A resilient member (for example, a reset tension spring 10) can be installed between the connecting rod 1102 and the frame 1, and its function is to ensure that the crank block 7 is in abutting cooperation with the pin 8 under the action of the elastic force. In this way, when the circuit breaker switch 2 is normally opened and closed, the circuit breaker opening and closing indicator 20 can be rotated with the circuit breaker transmission shaft 9 through the transmission of the connecting rod assembly 11, thereby accurately displaying the state of the circuit breaker.

[0061] In this embodiment, as shown in Figure 6 and Figure 9 A counter 25 and an electromagnetic lock 17 are also installed on the operation panel 5, respectively. The counter 25 can cooperate with the circuit breaker opening and closing indicator 20 to record the opening and closing times of the circuit breaker switch 2, which is convenient for subsequent maintenance and maintenance. The electromagnetic lock 17 cooperates with the grounding operation shaft 27 (or the grounding operation port 16), and specifically, as shown in Figure 4As shown, an electric sensor is installed in the insulator 12 connected with the connecting copper bar 13, and the electromagnetic lock 17 is electrically connected with the electric sensor; when the electric sensor detects voltage inside, the bolt of the electromagnetic lock 17 will block the grounding operation port 16, at this time even if the unlocking button on the electromagnetic lock 17 is pressed, it will not work. When the electric sensor does not detect voltage, pressing the unlocking button on the electromagnetic lock 17 can make the bolt of the electromagnetic lock 17 retract, and then the operation handle can be inserted into the grounding operation port 16 for operation. Such design further improves the safety, avoids the risk of misoperation of the grounding switch 4 in the live state; in addition, the electromagnetic lock 17 cooperates with the above-mentioned mechanical interlocking device, which can greatly improve the interlocking reliability of the entire switch device.

[0062] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A phase selector switch operating mechanism characterized by comprising: The utility model relates to an isolating switch and grounding switch interlocking device, including: An operation panel; An isolating operation shaft arranged on the operation panel; A grounding operation shaft arranged on the operation panel; An interlocking piece one mounted on the isolating operation shaft; And An interlocking piece two mounted on the grounding operation shaft; the interlocking piece one and the interlocking piece two are matched through a limiting structure; When the isolating switch is closed, the interlocking piece one is suitable for blocking the grounding operation shaft, and the interlocking piece two is suitable for being locked under the action of the limiting structure, so that the grounding operation shaft is in the locked and inoperable state; When the grounding switch is closed, the interlocking piece two is suitable for blocking the isolating operation shaft, and the interlocking piece one is suitable for being locked under the action of the limiting structure, so that the isolating operation shaft is in the locked and inoperable state; The interlocking piece one includes an interlocking disc one and a baffle one, the interlocking disc one is sleeved and mounted on the isolating operation shaft, and the baffle one is mounted on the interlocking disc one; the interlocking piece two includes an interlocking disc two and a baffle two, the interlocking disc two is sleeved and mounted on the grounding operation shaft, and the baffle two is mounted on the interlocking disc two; the interlocking disc one and the interlocking disc two are matched through the limiting structure; when the isolating switch is closed, the isolating operation shaft is suitable for driving the baffle one to rotate through the interlocking disc one and blocking the grounding operation shaft, at this time, the interlocking disc one is suitable for making the interlocking disc two be locked through the limiting structure; when the grounding switch is closed, the grounding operation shaft is suitable for driving the baffle two to rotate through the interlocking disc two and blocking the isolating operation shaft, at this time, the interlocking disc two is suitable for making the interlocking disc one be locked through the limiting structure; The limiting structure includes a notch one arranged on the outside of the interlocking disc one and a notch two arranged on the outside of the interlocking disc two; when the isolating switch is in the closed state, the interlocking disc one is matched with the notch two, and then the grounding operation shaft is locked in the circumferential direction; when the grounding switch is in the closed state, the interlocking disc two is matched with the notch one, and then the isolating operation shaft is locked in the circumferential direction.

2. The phase selector switch operating mechanism according to claim 1, characterized by: A circuit breaker opening and closing indicator and an interlocking plate one are arranged on the operation panel, and the interlocking plate one is slidably arranged on the operation panel; When the circuit breaker switch is closed, the circuit breaker opening and closing indicator is suitable for abutting against one end of the interlocking plate one and locking the interlocking plate one, so that the other end of the interlocking plate one blocks the isolating operation shaft.

3. The phase selector switch operating mechanism of claim 2, wherein: An interlocking plate two is slidably arranged on the operation panel, a lock pin of a switch chamber door plate is mounted on the end of the interlocking plate two, and the interlocking plate two is matched with the interlocking disc two; When the grounding switch is opened, the interlocking disc two is suitable for locking the interlocking plate two, at this time, the switch chamber door plate is in the locked state under the action of the lock pin; when the grounding switch is closed, the interlocking disc two is suitable for unlocking the interlocking plate two, at this time, the interlocking plate two is suitable for driving the lock pin to move and unlocking the switch chamber door plate.

4. The phase selector switch operating mechanism of claim 3, wherein: The bottom end of the interlocking plate II is inwardly bent to form a blocking strip, and the outer periphery of the interlocking disc II is provided with a protruding part; when the blocking strip cooperates with the protruding part, the interlocking plate II is in a locked state; when the blocking strip is out of position with the protruding part, the interlocking plate II is in an unlocked state; when the blocking strip cooperates with the notch II, the grounding operating shaft is further locked in the circumferential direction, and at this time the interlocking plate II is suitable for plugging the grounding operating shaft.

5. The phase selector switch operating mechanism of claim 2 wherein: A circuit breaker transmission shaft is rotatably arranged on the operation panel, and a circuit breaker opening and closing indicator is mounted on the circuit breaker transmission shaft. The circuit breaker transmission shaft cooperates with a circuit breaker switch through a connecting rod assembly. The connecting rod assembly is connected with a frame of the circuit breaker switch through an elastic member. When the circuit breaker switch is normally opened and closed, the circuit breaker main shaft is suitable for being in abutting state with the insulating pull rod of the circuit breaker switch under the action of the elastic member, and the opening and closing state of the circuit breaker switch is displayed through the circuit breaker opening and closing indicator. When the circuit breaker is in emergency opening, the circuit breaker transmission shaft is operated to drive the circuit breaker main shaft to rotate through the action of the connecting rod assembly, and the insulating pull rod is forced to move to realize the emergency opening of the circuit breaker switch.

6. The phase selector switch operating mechanism of claim 5 wherein: The connecting rod assembly includes an upper crank arm, a connecting rod and a lower crank arm. The upper crank arm is mounted on the end of the circuit breaker main shaft, the lower crank arm is mounted on the end of the circuit breaker transmission shaft, and the two ends of the connecting rod are respectively hinged with the upper crank arm and the lower crank arm. The lengths of the lower crank arm, the upper crank arm and the connecting rod increase in turn. When the circuit breaker is in emergency opening, the lower crank arm is suitable for rotating under the action of the circuit breaker transmission shaft, thereby dragging the connecting rod to drive the upper crank arm and the circuit breaker main shaft to rotate synchronously.

7. The phase selector switch operating mechanism of claim 6 wherein: The circuit breaker main shaft is externally fixed with a crank block, and the insulating pull rod is externally provided with a pin. When the circuit breaker switch is normally opened and closed, the crank block is suitable for being in abutting state with the pin under the action of the elastic force of the elastic member. When the circuit breaker is in emergency opening, the crank block is suitable for rotating under the drive of the circuit breaker main shaft, thereby dragging the pin to drive the insulating pull rod to move.

8. The phase selector switch operating mechanism of claim 2 wherein: A counter and an electromagnetic lock are also mounted on the operation panel. The counter cooperates with the circuit breaker opening and closing indicator, thereby recording the opening and closing times of the circuit breaker switch. The electromagnetic lock cooperates with the grounding operating shaft.

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