Interlock operating mechanism for grounding switches and electrically operated method thereof

Abstract

The application discloses an interlocking operation mechanism for a grounding switch, an electric operation method of the interlocking operation mechanism and a switch cabinet. The interlocking operation mechanism comprises at least one mechanical interlocking device and an electric operation device. The at least one mechanical interlocking device comprises an interlocking piece, a locking assembly and a program lock. The locking assembly is used for locking the clamping part of the interlocking piece, so that the operation spindle is locked, and the program lock is used for locking the locking assembly. The electric operation device comprises at least one locking detection switch, a control circuit and a driving device. The locking state of the locking assembly is detected through the at least one locking detection switch. When the locking assembly is in an unlocked state, the control circuit can electrically control the closing operation or the opening operation of the grounding switch according to a user operation instruction.

Description

Technical Field

[0001] This invention relates to the field of switchgear, and particularly to an interlocking operating mechanism for a grounding switch, its electric operating method, and a switchgear. Background Technology

[0002] Currently, with the continuous development of the power market, customers have increasingly higher requirements for the intelligence and safety of switchgear. To meet the need for long-distance grounding functionality, the application of electrically operated grounding switches is becoming increasingly widespread. In switchgear with related technologies, mechanical interlocking devices are typically used for locking during manual operation of the grounding switch to achieve interlocking of the grounding switch's closed or open state. Alternatively, an electric operating mechanism can be used to remotely operate the grounding switch to achieve interlocking control. However, existing solutions cannot achieve electrically operated closing or opening of the grounding switch while having a mechanical interlocking device for manual interlocking. Summary of the Invention

[0003] To address the problem that existing solutions cannot achieve electric closing or opening operations of grounding switches while having mechanical interlocking devices for manual interlocking, this invention provides an interlocking operation mechanism for grounding switches, its electric operation method, and a switch cabinet.

[0004] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0005] On one hand, the present invention provides an interlocking operating mechanism for a grounding switch, which is disposed within the cabinet of a switchgear, and the cabinet also includes an operating spindle for controlling the closing or opening of the grounding switch; the interlocking operating mechanism includes: At least one mechanical interlocking device, comprising: An interlocking component having a locking portion; the interlocking component is sleeved on the operating spindle and can rotate with the operating spindle, so that when the operating spindle is in the closed position or the open position, the locking portion rotates to the locking position; A locking assembly includes an operating component, a transmission component, and a locking component connected in sequence. The operating component is horizontally disposed through the cabinet, with its first end protruding from the cabinet for operation outside the cabinet. The second end of the operating component is connected to the transmission component, which in turn drives the locking component to move up and down. When the locking component moves upward, it engages with the locking part of the interlocking component to lock the operating spindle. A programmable lock is horizontally mounted on the cabinet body, near the first end of the operating component. The bottom end of the operating component has a latch. When the locking element of the locking assembly engages with the interlocking element, the programmable lock rotates under manual operation, causing the protrusion of the programmable lock to engage with the latch of the operating component to lock the locking assembly. The electrically operated device includes: At least one lock detection switch is disposed on one side near the second end of the actuating element to detect the lock state of the locking component; The control circuit is connected to the electrical signal of the locking detection switch; and A drive device is installed inside the cabinet and is connected to the operating spindle via a transmission. The drive device is electrically connected to the control circuit. When the control circuit receives information that the locking component is in an unlocked state, it can send a closing or opening control signal to the drive device according to the user's operation command. The drive device drives the operating spindle to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch.

[0006] In some embodiments, the at least one mechanical interlocking device includes two mechanical interlocking devices, one of which is used for opening interlocking and the other is used for closing interlocking. In this device, the openings of the engaging parts of one mechanical interlocking device and the engaging parts of another mechanical interlocking device are oriented at 180 degrees.

[0007] In some embodiments, the at least one locking detection switch includes a locking closing detection switch and a locking opening detection switch; the mechanical interlocking device for closing interlocking is defined as a first mechanical interlocking device, and the mechanical interlocking device for opening interlocking is defined as a second mechanical interlocking device. The locking and closing detection switch is located on one side near the second end of the operating component of the first mechanical interlocking device to detect the locking state of the locking component of the first mechanical interlocking device. The locking trip detection switch is located on one side of the second end of the operating component of the second mechanical interlocking device to detect the locking state of the locking component of the second mechanical interlocking device; When the control circuit receives information that both the locking components of the first mechanical interlocking device and the second mechanical interlocking device are in an unlocked state, it can send a closing or opening control signal to the drive device according to the user's operation command. The drive device drives the operating spindle to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch.

[0008] In some embodiments, the at least one mechanical interlocking device further includes a reset member, one end of which is mounted on a fixed bracket extending inward from the operating member to the cabinet, and the other end is connected to the operating member; when the operating member is stretched and locked outward from the cabinet, the reset member is in a stretched state; when the program lock unlocks the locking component, the reset member returns to its initial state under the action of elasticity, so that the locking component automatically returns to the unlocked state.

[0009] In some embodiments, the electric operating device further includes a mode switching device, including a manual pressure plate and a pressure plate detection switch; The manual pressure plate has a first end that is rotatably mounted on the cabinet; a second end that is provided with a limiting part to engage with the cabinet and block the manual control hole of the operating spindle; a drive shaft is also provided on one side of the manual pressure plate; and a pressure plate detection switch is provided in the cabinet to output a mode switching signal and is connected to the control circuit electrical signal. When the manual pressure plate is engaged with the cabinet, the second end of the manual pressure plate blocks the manual control hole of the operating spindle, the transmission shaft contacts the pressure plate detection switch, and the output mode switching signal is high level; when the control circuit receives the mode switching signal as high level, it can control the closing or opening operation of the grounding switch. The second end of the manual pressure plate disengages from the cabinet when manually pressed, and rotates along the first end of the manual pressure plate as the axis when manually driven. The second end of the manual pressure plate does not block the manual control hole of the operating spindle, allowing the user to manually control the operating spindle. The transmission shaft disengages from the pressure plate detection switch, and the output mode switching signal is low.

[0010] In some embodiments, the at least one mechanical interlocking device further includes a bracket connected to the cabinet, and the operating member is slidable relative to the bracket; the locking detection switch is disposed on the bracket and is located near the operating member on the side away from the cabinet.

[0011] In some embodiments, the transmission assembly includes a connecting rod, a rotating member, a connecting plate, and a lifting rod disposed on the bracket; the operating member is rotatably connected to one end of the connecting rod, the other end of the connecting rod is fixedly connected to one end of the rotating member, the other end of the rotating member is fixedly connected to one end of the connecting plate, the other end of the connecting plate is rotatably connected to one end of the lifting rod, and the other end of the lifting rod is rotatably connected to the locking member; When the operating component moves relative to the cabinet, it drives the connecting rod to rotate around the rotating component as the axis. The rotation of the rotating component drives the connecting plate to rotate around the rotating component as the axis, causing the lifting rod to move up and down, thereby driving the locking component to move up and down.

[0012] In some embodiments, the electric operating device further includes an electrical interlock detection switch for outputting an electrical interlock signal, and the electrical interlock detection switch is electrically connected to the control circuit. The electrical interlock detection switch is installed inside the cabinet and close to the interlock electromagnet installed inside the cabinet; when the switch cabinet is energized, the interlock electromagnet is energized and attracted, and contacts the electrical interlock detection switch, outputting the electrical interlock signal as a high level; When the control circuit receives a high-level electrical interlocking signal, it can control the closing or opening operation of the grounding switch.

[0013] In some embodiments, the electric operating device further includes a handcart position detection switch for outputting a handcart position signal, and the handcart position detection switch is electrically connected to the control circuit. The handcart position detection switch is installed inside the cabinet; when the handcart is in the test state, the handcart position detection switch is disconnected from the handcart and outputs a low-level handcart position signal; when the handcart is in the working state, the handcart position detection switch is in contact with the handcart and outputs a high-level handcart position signal. When the control circuit receives a low-level signal from the handcart position signal, it can control the closing or opening operation of the grounding switch.

[0014] In some embodiments, the electric operating device further includes a cable compartment door closing detection switch for outputting a cable compartment door closing signal, and the cable compartment door closing detection switch is electrically connected to the control circuit. The cable compartment door closing detection switch is installed on the door frame structure of the cable compartment. When the door structure of the cable compartment is closed to the door frame structure, the door structure of the cable compartment contacts the cable compartment door closing detection switch, and outputs the cable compartment door closing signal as a high level. When the control circuit receives a high-level signal from the cable compartment door closing, it can control the closing or opening operation of the grounding switch.

[0015] In some embodiments, the electric operating device further includes a cab door closing detection switch for outputting a cab door closing signal, and the cab door closing detection switch is electrically connected to the control circuit. The handcar compartment door closing detection switch is installed on the door frame structure of the handcar compartment. When the door structure of the handcar compartment is closed to the door frame structure of the handcar compartment, the door structure of the handcar compartment contacts the handcar compartment door closing detection switch, and the handcar compartment door closing signal is output as a high level. When the control circuit receives a high-level signal from the handcart compartment door closing signal, it can control the closing or opening operation of the grounding switch.

[0016] In some embodiments, the electric operating device further includes a closing position detection switch and an opening position detection switch disposed on the grounding switch, both of which are electrically connected to the control circuit. When the grounding switch is closed, the closing detection switch outputs a high-level closing signal, and the control circuit can control the grounding switch to perform an opening operation. When the grounding switch is in the open position, the open position detection switch outputs an open position signal at a high level, and the control circuit can control the grounding switch to perform a closing operation.

[0017] On the other hand, the present invention provides an electrically operated method for an interlocking operating mechanism of a grounding switch, applied to the interlocking operating mechanism described above, characterized in that the electrically operated method includes: S100: Detect the locking status signal of at least one mechanical interlocking device of the interlocking operation mechanism; wherein, when the locking mechanism of the at least one mechanical interlocking device locks the grounding switch to the closed or open position, the locking status signal is a locking signal; when the locking mechanism of the at least one mechanical interlocking device does not lock the grounding switch to the closed or open position, the locking status signal is an unlocked signal. S200: Determine the information of the lock status signal and determine the status of the lock status signal; if the lock status signal is a locked signal, return to step S100; if the lock status signal is an unlocked signal, proceed to the next step; and S300: Receives user operation instructions and sends a control signal for closing or opening the circuit breaker to the drive device according to the user operation instructions, so as to drive the operating spindle to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch.

[0018] In some embodiments, step S100 further includes: A mode switching signal for a detection mode switching device is provided; wherein the mode switching device includes a manual pressure plate and a pressure plate detection switch; when the manual pressure plate is in contact with the pressure plate detection switch, the mode switching signal is an electric signal; when the manual pressure plate is disengaged from the pressure plate detection switch, the mode switching signal is a manual signal. Step S200 also includes: Determine the information of the mode switching signal; if the mode switching signal is an electric signal, proceed to the next step; if the mode switching signal is a manual signal, return to step S100.

[0019] In another aspect, the present invention provides a switch cabinet, including a cabinet body, a grounding switch, an operating spindle, and an interlocking operating mechanism for the grounding switch as described above, all disposed within the cabinet body. The interlocking operation mechanism includes at least one mechanical interlocking device and an electric operating device; the at least one mechanical interlocking device is connected to the grounding switch through the operating spindle and is used to lock the closed or open position of the grounding switch in manual operation mode; the electric operating device is connected to the grounding switch through the operating spindle and is used to electrically drive the grounding switch to perform a closing or opening operation.

[0020] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects: The interlocking operating mechanism for a grounding switch provided in this invention uses at least one mechanical interlocking device. When a user manually operates the grounding switch interlocking device, the closed or open position of the grounding switch can be interlocked, thereby manually locking the state of the grounding switch. Based on this, an electric operating device is provided to detect the locking state of the at least one mechanical interlocking device. When all at least one mechanical interlocking device is in an unlocked state, the user can remotely operate the grounding switch to close or open, thereby achieving electric control of the grounding switch. Therefore, in the interlocking operating mechanism of this invention, the user can flexibly control the grounding switch using either manual or electric operation according to their needs. This not only meets the user's requirement to operate the grounding switch locally or remotely, but also ensures that the two operating methods do not interfere with each other and operate normally.

[0021] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this disclosure. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0023] Figure 1This is a three-dimensional schematic diagram of an interlocking operation mechanism for a grounding switch according to an embodiment of the present invention.

[0024] Figure 2 This is a side view schematic diagram of an interlocking operation mechanism for a grounding switch according to another embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of at least one interlocking mechanism of an interlocking operation mechanism for a grounding switch according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the interlocking component and locking assembly of an interlocking operation mechanism for a grounding switch according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of a structure in which at least one interlocking mechanism of an interlocking operation mechanism for a grounding switch is in an unlocked state, according to an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the structure of at least one interlocking mechanism of an interlocking operation mechanism for a grounding switch in an embodiment of the present invention, wherein the interlocking mechanism is in a locked state.

[0029] Figure 7 This is a schematic diagram of the structure of at least one interlocking mechanism of an interlocking operation mechanism for a grounding switch in an embodiment of the present invention, in a locked-out state.

[0030] Figure 8 This is a schematic diagram of the transmission component of an interlocking operation mechanism for a grounding switch according to an embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the mode switching device in an embodiment of the present invention.

[0032] Figure 10 This is a front view schematic diagram of an interlocking operation mechanism for a grounding switch in an embodiment of the present invention.

[0033] Figure 11 This is a schematic diagram of the installation of the electrical interlock detection switch in an embodiment of the present invention.

[0034] Figure 12 This is a schematic diagram of the handcart interlocking mechanism and its detection switch in an embodiment of the present invention.

[0035] Figure 13 This is a schematic flowchart of an electric operation method for an interlocking operation mechanism for a grounding switch, according to an embodiment of the present invention.

[0036] Figure 14 This is a schematic diagram of the structure of a switch cabinet according to an embodiment of the present invention. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] Please see Figure 1 This application provides an interlocking operation mechanism 10 for a grounding switch. Specifically, the grounding switch is an electric grounding switch, which can realize the closing or opening operation of the grounding switch 20 by manual or electric operation.

[0040] Combination Figure 2 The interlocking operating mechanism 10 provided in this embodiment is installed inside the switch cabinet, which also houses an operating spindle 120 for controlling the closing or opening of the grounding switch 20. The interlocking operating mechanism 10 includes at least one mechanical interlocking device 11 and an electric operating device 12.

[0041] For details, please refer to Figure 2The grounding switch 20 has a closed state and an open state. In the illustration, the disconnect switch of the grounding switch 20 is in a horizontal, flat position, indicating that the grounding switch 20 is in the open state. When the operating spindle drives the disconnect switch 20 to rotate clockwise along a fixed end (the right end in the illustration), the disconnect switch 20 stands vertically, indicating that the grounding switch 20 is in the closed state. In one embodiment, the operating spindle 120 can be connected to the grounding switch 20 via a transmission gear. However, this solution does not limit the operating spindle 120 to other ways of connecting to the grounding switch 20. The operator controls the operating spindle 120 manually or electrically, allowing the operating spindle 120 to control the state of the grounding switch 20 through rotation, translation, etc. The operating spindle 120 has a closed position corresponding to the closed state of the grounding switch 20 and an open position corresponding to the open state of the grounding switch 20.

[0042] Please see Figure 3 In this embodiment, at least one mechanical interlocking device 11 includes an interlocking element 111, a locking component 112, and a program lock 113.

[0043] Combination Figure 4 The interlocking member 111 has a locking portion 1111. The interlocking member 111 is sleeved on the operating spindle 120 and can rotate with the operating spindle 120, so that when the operating spindle 120 is in the closed or open position, the locking portion 1111 rotates to the locking position. Figure 4 As shown, the locking position of the engaging part 1111 is when it is rotated to a vertically downward position.

[0044] Combination Figure 3 and Figure 4 The locking assembly 112 includes an operating member 1121, a transmission assembly 1122, and a locking member 1123 connected in sequence. The operating member 1121 is laterally disposed on a rear side of the cabinet, with its first end protruding from the cabinet for operation outside the cabinet. The second end of the operating member 1121 is connected to the transmission assembly 1122, and the transmission assembly 1122 drives the locking member 1123 to move up and down. The locking member 1123 is provided with a locking member baffle 11231. When the locking member 1123 moves upward, the locking member baffle 11231 engages with the engaging part 1111 of the interlocking member 111, thereby restricting the rotation of the operating spindle 120 and locking the operating spindle 120.

[0045] See also Figure 3The program lock 113 is horizontally installed on the cabinet and close to the first end of the operating component 1121. The bottom end of the operating component 1121 is provided with a latch. When the locking component 1123 of the locking assembly 112 is engaged with the interlocking component 111, the program lock 113 rotates under manual operation, so that the protrusion 1131 of the program lock 113 cooperates with the latch 11211 of the operating component 1121 to lock the locking assembly 112.

[0046] Please continue reading. Figure 1 The electric operating device 12 in this embodiment includes at least one lock detection switch 121, a control circuit (not shown in the figure), and a drive device 122.

[0047] In this embodiment, as Figure 3 As shown, at least one locking detection switch 121 is disposed on the side of the operating member 1121 within the cabinet to detect the locking state of the locking assembly 112. Specifically, the at least one locking detection switch 121 is a contact-type detection sensor. When the operating member of the locking assembly 112 is manually pulled out to lock the operating spindle and is locked by the program lock, the operating member on the side of the cabinet disengages from the at least one locking detection switch 121, at which time the locking detection switch 121 outputs a low-level locking sensing signal. When the program lock 113 unlocks and the operating member of the locking assembly 112 returns to the unlocked state, the operating member on the side of the cabinet contacts the at least one locking detection switch 121, at which time the locking detection switch 121 outputs a high-level locking sensing signal. Thus, by detecting the level of the locking sensing signal, the locking state of the locking assembly 112 can be detected.

[0048] The control circuit is electrically connected to the locking detection switch 121 and has received the locking sensing signal. The drive device 122 is installed inside the cabinet and is connected to the operating spindle 120. The drive device 122 is electrically connected to the control circuit. When the control circuit receives information that the locking component 112 is in an unlocked state, that is, when the locking sensing signal is high, it can send a closing or opening control signal to the drive device 122 according to the user's operation command. The drive device 122 drives the operating spindle 120 to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch 20.

[0049] Unlike related technologies, the interlocking operation mechanism 10 for a grounding switch provided by this invention, through at least one mechanical interlocking device 11, can interlock the closed or open position of the grounding switch 20 when the user manually operates it, thereby manually locking the state of the grounding switch 20. Based on this, an electric operating device 12 is provided to detect the locking state of at least one mechanical interlocking device 11. When all at least one mechanical interlocking device 11 is in an unlocked state, the user can remotely operate the grounding switch 20 to close or open, thereby achieving electric control of the grounding switch 20. Therefore, in the interlocking operation mechanism 10 of this invention, the user can flexibly control the grounding switch 20 by manual or electric operation according to their own needs, not only satisfying the user's need to operate the grounding switch 20 locally or remotely, but also ensuring that the two operating methods do not interfere with each other and operate normally.

[0050] Please see Figure 5 , Figure 5 This is a schematic diagram of at least one interlocking mechanism of an interlocking operation mechanism for a grounding switch in an unlocked state, according to another embodiment of the present invention. In this embodiment, at least one mechanical interlocking device 11 includes two mechanical interlocking devices, wherein the mechanical interlocking device for closing interlocking is a first mechanical interlocking device 11a, and the mechanical interlocking device for opening interlocking is a second mechanical interlocking device 11b.

[0051] In this embodiment, the interlocking components 111a of the first mechanical interlocking device 11a and 111b of the second mechanical interlocking device 11b are sequentially arranged along the extension direction of the operating spindle 120, and the engaging portion of the interlocking component 111a and the engaging portion of the interlocking component 111b are at 180°. In this embodiment, when the operating spindle 120 rotates to the closed position, the engaging portion of the interlocking component 111a is vertically downward and in a locked state, while the engaging portion of the interlocking component 111b is vertically upward. When the operating spindle 120 rotates to the open position, the engaging portion of the interlocking component 111b is vertically downward and in a locked state, while the engaging portion of the interlocking component 111a is vertically upward.

[0052] Please see Figure 6 , Figure 6 This is a schematic diagram of at least one interlocking mechanism of an interlocking operating mechanism for a grounding switch in a locked state according to another embodiment of the present invention. At this time, the operating spindle 120 is in the closed position, and the engaging part of the interlocking member 111a of the first mechanical interlocking device is in the locked position. By pulling out the operating member 1121a of the locking component 112a of the first mechanical interlocking device 11a relative to the cabinet, the locking member 1123a of the locking component 112a moves upward and engages with the engaging part of the interlocking member 111a, thereby locking the closed position of the operating spindle 120.

[0053] Please see Figure 7 , Figure 7 This is a schematic diagram of at least one interlocking mechanism of an interlocking operating mechanism for a grounding switch in a locked-open state according to another embodiment of the present invention. When the operating spindle 120 is in the open position, the engaging part of the interlocking member 111b of the second mechanical interlocking device is in a locked position. By operating the operating member 1121b of the locking component 112b of the second mechanical interlocking device, the locking member 1123b is moved upward and engages with the engaging part of the interlocking member 111b to lock the open position of the operating spindle 120.

[0054] Please continue reading. Figure 5 Accordingly, in this embodiment, at least one locking detection switch 121 includes a locking closing detection switch 121a and a locking opening detection switch 121b. The locking closing detection switch 121a is disposed on one side of the second end of the operating member 1121a of the first locking component 112a of the first mechanical interlocking device to detect the locking state of the first locking component 112a. The locking opening detection switch 121b is disposed on one side of the second end of the operating member 1121a of the second locking component 112b of the second mechanical interlocking device to detect the locking state of the second locking component 112b. When the control circuit receives information that both the first locking component 112a and the second locking component 112b are in an unlocked state, it can send a closing or opening control signal to the drive device 122 according to the user's operation command. The drive device 122 drives the operating spindle 120 to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch 20.

[0055] Please see Figure 3 Specifically, in this embodiment, at least one interlocking device further includes a bracket 115 connected to the cabinet, and an operating member 1121 is slidable relative to the bracket 115. A locking detection switch 121 is disposed on the bracket 115 and is located near the side of the operating member 1121 away from the cabinet.

[0056] Combination Figure 3 and Figure 8Specifically, the transmission assembly 1122 includes a connecting rod 11221, a rotating component 11222, a connecting plate 11223, and a lifting rod 11224, all mounted on the bracket 115. The operating component 1121 is rotatably connected to one end of the connecting rod 11221, the other end of the connecting rod 11221 is fixedly connected to one end of the rotating component 11222, the other end of the rotating component 11222 is fixedly connected to one end of the connecting plate 11223, the other end of the connecting plate 11223 is rotatably connected to one end of the lifting rod 11224, and the other end of the lifting rod 11224 is rotatably connected to the locking component 11223. When the operating component 1121 moves relative to the cabinet, it causes the connecting rod 11221 to rotate about the rotating component 11222. The rotation of the rotating component 11222 causes the connecting plate 11223 to rotate about the rotating component 11222, causing the lifting rod 11224 to move up and down, thereby causing the locking component 1123 to move up and down.

[0057] Please continue reading. Figure 3 In this embodiment, at least one mechanical interlocking device 11 further includes a reset member 114, one end of which is mounted on a bracket 115 extending inward from the operating member 1121 into the cabinet, and the other end is connected to the operating member 1121. Specifically, the upper side of the operating member 1121 protrudes upward to form a protrusion, and an opening is provided on the protrusion. One end of the spring hooks into the opening to connect the operating member 1121.

[0058] Specifically, when the operating component 1121 is stretched and locked outwards from the cabinet, the reset component is in a stretched state. When the program lock 113 unlocks the locking component 112, the reset component returns to its initial state under the action of elasticity, causing the locking component 112 to automatically return to the unlocked state. By adding the reset component 114, the locking component 112 can automatically spring back to the unlocked initial state after being unlocked, thereby improving the convenience of user operation. Specifically, the reset component 114 can be a spring, which is not limited here.

[0059] Please see Figure 9 The interlocking operation mechanism 10 provided in this embodiment also includes a mode switching device 13, which includes a manual pressure plate 131 and a pressure plate detection switch 132.

[0060] The manual pressure plate 131 has a first end that is rotatably mounted on the cabinet, and a second end that has a limiting part 1311 to engage with the cabinet and block the manual control hole of the operating spindle 120. Figure 1As shown. Specifically, the limiting part 1311 cooperates with the hook structure on the cabinet to fix the manual pressure plate 131. The second end of the manual pressure plate 131 can be constructed as a hook-shaped structure protruding towards the outside of the cabinet, or it can be constructed as a hollow hemispherical structure protruding on the outside of the cabinet; there is no limitation here. When in electric operation mode, the second end of the manual pressure plate 131 completely blocks the manual control hole of the operating spindle 120, preventing the user from inserting tools into the control hole to control the operating spindle, thereby avoiding user misoperation in electric operation mode.

[0061] The manual pressure plate 131 is located on one side of the cabinet and is equipped with a drive shaft 1312. A pressure plate detection switch 132 is located inside the cabinet and is used to output a mode switching signal, which is also connected to the control circuit's electrical signal. When the manual pressure plate 131 is engaged with the cabinet, the drive shaft 1312 contacts the pressure plate detection switch 132, and the output mode switching signal is high. When the control circuit receives the high-level mode switching signal, it can enter the electric operation mode and control the closing or opening operation of the grounding switch.

[0062] When the second end of the manual pressure plate 131 can be disengaged from the cabinet under manual pressing and rotates around the first end of the manual pressure plate 131 as the axis under manual drive, the manual pressure plate does not cover the manual control part of the operating spindle 120. The user can use operating tools to perform closing or opening operations on the operating spindle 120. At this time, the drive shaft 1312 is disengaged from the pressure plate detection switch 132, and the output mode switching signal is low. When the control circuit detects that the mode switching signal is low, it stops the electric operation mode. The grounding switch 20 can only be operated manually, thereby avoiding abnormal electric operation of the grounding switch 20 in manual operation mode, ensuring the personal safety of the operator and the normal operation of the equipment.

[0063] In related technologies, the program lock is located on the right side of the operating component, while the program lock of the handcart is located on the left side of the operating component. Please refer to [link / reference]. Figure 10 In this embodiment, the program lock 113 is located on the left side of the operating member 1121. This serves two purposes: firstly, it provides space for the subsequently installed mode switching device 13; secondly, it resolves the issue of inconsistent operating directions of the program locks on the grounding switch and the handcart. Specifically, since the program locks of both the grounding switch and the handcart are located on the left side of the operating member in their interlocking structure, they are locked by rotating the key counterclockwise, causing the protrusion of the program lock to engage with the latch of the operating member; and unlocked by rotating the key clockwise, causing the protrusion of the program lock to disengage from the latch of the operating member.

[0064] In one embodiment, such as Figure 11As shown, the electric operating device 12 of the present invention also includes an electrical interlock detection switch 123, which is used to output an electrical interlock signal, and the electrical interlock detection switch is connected to the control circuit electrical signal.

[0065] The electrical interlock detection switch 123 is installed inside the cabinet and close to the interlocking electromagnet 140 installed inside the cabinet. When the switch cabinet is energized, the interlocking electromagnet 140 is energized and attracted, and contacts the electrical interlock detection switch 123, outputting an electrical interlock signal at a high level.

[0066] When the control circuit receives a high-level electrical interlock signal, it ensures that the switchgear is in a energized working state and can control the closing or opening operation of the grounding switch 20.

[0067] In one embodiment, such as Figure 12 As shown, the electric operating device also includes a handcart position detection switch 124, which is used to output a handcart position signal, and the handcart position detection switch 124 is connected to the control circuit electrical signal.

[0068] The trolley position detection switch 124 is installed inside the cabinet. When the trolley is in test mode, the trolley position detection switch is disengaged from the trolley, and the output trolley position signal is low. At this time, the trolley position is locked by pulling out the trolley operating component 2121 and then rotating the trolley program lock 213. When the trolley is in working mode, the trolley position detection switch 124 is engaged with the trolley, and the output trolley position signal is high.

[0069] When the control circuit receives a low-level position signal from the handcart, it can control the closing or opening operation of the grounding switch 20.

[0070] In one embodiment, the electric operating device further includes a cable compartment door closing detection switch (not shown) for outputting a cable compartment door closing signal, and the cable compartment door closing detection switch is electrically connected to the control circuit.

[0071] The cable compartment door closure detection switch is installed on the door frame structure of the cable compartment. When the door structure of the cable compartment is closed to the door frame structure, the door structure of the cable compartment contacts the cable compartment door closure detection switch, and the output cable compartment door closure signal is high level.

[0072] When the control circuit receives a high-level signal indicating that the cable compartment is closed, it can control the closing or opening operation of the grounding switch 20.

[0073] In one embodiment, the electric operating device further includes a cab door closing detection switch (not shown in the figure) for outputting a cab door closing signal, and the cab door closing detection switch is connected to the control circuit electrical signal.

[0074] The handcar compartment door closing detection switch is installed on the door frame structure of the handcar compartment. When the door structure of the handcar compartment is closed to the door frame structure, the door structure of the handcar compartment contacts the handcar compartment door closing detection switch, and the output handcar compartment door closing signal is high level.

[0075] When the control circuit receives a high-level signal indicating that the handcar cab door is closed, it can control the closing or opening operation of the grounding switch 20.

[0076] To ensure smooth electric operation of the grounding switch 20, several detection switches, including an electrical interlock detection switch, a trolley position detection switch, a cable compartment door closing detection switch, and a trolley compartment door closing detection switch, are installed to read the status information of each component in the switchgear. By determining the status information of these detection switches, it is ensured that the grounding switch 20 is driven to perform closing or opening operations under the conditions required for electric operation, thus guaranteeing the normal operation of the electric operation. Of course, those skilled in the art can add other detection switches or adjust and modify the above detection switches according to actual needs, which is not limited here.

[0077] Please see Figure 13 This application also provides an electric operating method for an interlocking operating mechanism of a grounding switch, used for electrically controlling the closing or opening operation of the grounding switch, including the following steps.

[0078] S100) Detects the locking status signal of at least one mechanical interlocking device of the interlocking operating mechanism. Specifically, when the locking mechanism of at least one mechanical interlocking device locks the grounding switch to the closed or open position, the locking status signal is a locking signal; when the locking mechanism of at least one mechanical interlocking device does not lock the grounding switch to the closed or open position, the locking status signal is a non-locking signal. Specifically, the locking signal can be a high-level state of the locking status signal, and the non-locking signal can be a low-level state of the locking status signal.

[0079] (S200) Determine the information of the lock status signal and determine the status of the lock status signal; if the lock status signal is a locked signal, return to step S100; if the lock status signal is an unlocked signal, execute the next step.

[0080] S300 receives user operation instructions and sends control signals for closing or opening to the drive device according to the user operation instructions, so as to drive the operating main shaft to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch.

[0081] In some embodiments, step S100 further includes detecting a mode switching signal of the mode switching device. The mode switching device includes a manual pressure plate and a pressure plate detection switch; when the manual pressure plate is in contact with the pressure plate detection switch, the output mode switching signal is an electric signal; when the manual pressure plate is disengaged from the pressure plate detection switch, the mode switching signal is a manual signal. Specifically, the electric signal can be a high-level state of the output mode switching signal, and the manual signal can be a low-level state of the output mode switching signal.

[0082] Step S200 further includes: receiving a mode switching signal; if the mode switching signal is high, proceeding to the next step; if the mode switching signal is low, returning to step S100.

[0083] In some embodiments, step S100 further includes: detecting the cable compartment closing signal, the handcart compartment closing signal, the handcart position signal, and the electrical interlock signal. Step S200 further includes: receiving the cable compartment closing signal, the handcart compartment closing signal, the handcart position signal, and the electrical interlock signal. When the cable compartment closing signal, the handcart compartment closing signal, and the electrical interlock signal are all at a high level, and the handcart position signal is at a low level, proceed to the next step; otherwise, return to step S100. By confirming the status information of the above-mentioned detected signals, it is ensured that all parts of the switchgear are in the electric operation ready state under electric operation conditions, thus ensuring the normal operation of electric operation.

[0084] Unlike related technologies, in the electric operation method of the interlocking operation mechanism for a grounding switch provided by this invention, before the user electrically operates the grounding switch 20 to close or open, the user first confirms the locking status signal of the mechanical interlocking device. Only after ensuring that the mechanical interlocking device is in an unlocked state can the grounding switch 20 be electrically operated to close or open, thereby realizing the electric control of the grounding switch 20 with the mechanical interlocking device and ensuring the normal operation of the equipment.

[0085] Please see Figure 14 This application also provides a switch cabinet 1, including a cabinet 30, a grounding switch 20 disposed within the cabinet 30, an operating spindle 120, and an interlocking operating mechanism 10 for the grounding switch 20 as described in the above embodiment. The interlocking operating mechanism 10 includes at least one mechanical interlocking device 11 and an electric operating device 12. The at least one mechanical interlocking device 11 is connected to the grounding switch 20 via the operating spindle 120 and is used to lock the closed or open position of the grounding switch 20 in manual operation mode; the electric operating device 12 is drively connected to the grounding switch 20 via the operating spindle 120 and is used to electrically drive the grounding switch 20 to perform a closing or opening operation.

[0086] Unlike related technologies, the switchgear 1 provided in this application embodiment is equipped with an interlocking operation mechanism 10. Through at least one mechanical interlocking device 11, when a user manually operates the grounding switch 20, the closed or open position of the grounding switch 20 can be interlocked, thereby manually locking the state of the grounding switch 20. Based on this, an electric operating device 12 is provided to detect the locking state of at least one mechanical interlocking device 11. When all at least one mechanical interlocking device 11 is in an unlocked state, the user can remotely operate the grounding switch 20 to close or open, thereby achieving electric control of the grounding switch 20. Therefore, in the switchgear 1 of this invention, the user can flexibly control the grounding switch 20 using either manual or electric operation according to their needs. This not only meets the user's need to operate the grounding switch 20 locally or remotely, but also ensures that the two operating methods do not interfere with each other and operate normally.

[0087] It should be understood that the technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, there are no contradictory combinations of these technical features, and they should all be considered to be within the scope of this specification.

[0088] The above are merely preferred embodiments of this disclosure and are not intended to limit the scope of protection of this disclosure. All equivalent structural changes made based on the description and drawings of this disclosure are included within the scope of protection of this disclosure.

Claims

1. An interlocking operating mechanism for a grounding switch, disposed within a switch cabinet, wherein the cabinet further comprises an operating spindle for controlling the closing or opening of the grounding switch; The interlocking operation mechanism includes: At least one mechanical interlocking device, comprising: An interlocking component having a locking portion; the interlocking component is sleeved on the operating spindle and can rotate with the operating spindle, so that when the operating spindle is in the closed position or the open position, the locking portion rotates to the locking position; A locking assembly includes an operating component, a transmission component, and a locking component connected in sequence. The operating component is horizontally disposed through the cabinet, with its first end protruding from the cabinet for operation outside the cabinet. The second end of the operating component is connected to the transmission component, which in turn drives the locking component to move up and down. When the locking component moves upward, it engages with the locking part of the interlocking component to lock the operating spindle. A programmable lock is horizontally mounted on the cabinet body, near the first end of the operating component. The bottom end of the operating component has a latch. When the locking element of the locking assembly engages with the interlocking element, the programmable lock rotates under manual operation, causing the protrusion of the programmable lock to engage with the latch of the operating component to lock the locking assembly. The electrically operated device includes: At least one lock detection switch is disposed on one side near the second end of the actuating element to detect the lock state of the locking component; The control circuit is connected to the electrical signal of the locking detection switch; and A drive device is installed inside the cabinet and is connected to the operating spindle via a transmission. The drive device is electrically connected to the control circuit. When the control circuit receives information that the locking component is in an unlocked state, it can send a control signal to the drive device to close or open the circuit according to the user's operation command. The drive device drives the operating spindle to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch. A mode switching device includes a manual pressure plate and a pressure plate detection switch; wherein, the first end of the manual pressure plate is rotatably mounted on the cabinet; the second end of the manual pressure plate is provided with a limiting part to engage with the cabinet and block the manual control hole of the operating spindle; a drive shaft is also provided on one side of the manual pressure plate located on the cabinet; the pressure plate detection switch is located in the cabinet and is used to output a mode switching signal and is connected to the electrical signal of the control circuit; When the manual pressure plate is engaged with the cabinet, the second end of the manual pressure plate blocks the manual control hole of the operating spindle, the transmission shaft contacts the pressure plate detection switch, and the output mode switching signal is high level; when the control circuit receives the mode switching signal as high level, it can control the closing or opening operation of the grounding switch. The second end of the manual pressure plate disengages from the cabinet when manually pressed, and rotates along the first end of the manual pressure plate as the axis when manually driven. The second end of the manual pressure plate does not block the manual control hole of the operating spindle, allowing the user to manually control the operating spindle. The transmission shaft disengages from the pressure plate detection switch, and the output mode switching signal is low.

2. The interlocking operating mechanism for a grounding switch according to claim 1, characterized in that, The at least one mechanical interlocking device includes two mechanical interlocking devices, one of which is used for opening interlocking and the other is used for closing interlocking. In this device, the openings of the engaging parts of one mechanical interlocking device and the engaging parts of another mechanical interlocking device are oriented at 180 degrees.

3. The interlocking operating mechanism for a grounding switch according to claim 2, characterized in that, The at least one locking detection switch includes a locking closing detection switch and a locking opening detection switch; the mechanical interlocking device used for closing interlocking is defined as the first mechanical interlocking device, and the mechanical interlocking device used for opening interlocking is defined as the second mechanical interlocking device. The locking and closing detection switch is located on one side near the second end of the operating component of the first mechanical interlocking device to detect the locking state of the locking component of the first mechanical interlocking device. The locking trip detection switch is located on one side of the second end of the operating component of the second mechanical interlocking device to detect the locking state of the locking component of the second mechanical interlocking device; When the control circuit receives information that both the locking components of the first mechanical interlocking device and the second mechanical interlocking device are in an unlocked state, it can send a closing or opening control signal to the drive device according to the user's operation command. The drive device drives the operating spindle to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch.

4. The interlocking operating mechanism for a grounding switch according to claim 1, characterized in that, The at least one mechanical interlocking device further includes a reset member, one end of which is mounted on a fixed bracket extending inward from the operating member to the cabinet, and the other end is connected to the operating member; when the operating member is stretched and locked outward from the cabinet, the reset member is in a stretched state; when the program lock unlocks the locking component, the reset member returns to its initial state under the action of elasticity, so that the locking component automatically returns to the unlocked state.

5. The interlocking operating mechanism for a grounding switch according to claim 1, characterized in that, The at least one mechanical interlocking device further includes a bracket connected to the cabinet, and the operating element is slidable relative to the bracket; the locking detection switch is disposed on the bracket and is located near the operating element on the side away from the cabinet.

6. The interlocking operating mechanism for a grounding switch according to claim 5, characterized in that, The transmission assembly includes a connecting rod, a rotating component, a connecting plate, and a lifting rod disposed on the bracket; the operating component is rotatably connected to one end of the connecting rod, the other end of the connecting rod is fixedly connected to one end of the rotating component, the other end of the rotating component is fixedly connected to one end of the connecting plate, the other end of the connecting plate is rotatably connected to one end of the lifting rod, and the other end of the lifting rod is rotatably connected to the locking component. When the operating component moves relative to the cabinet, it drives the connecting rod to rotate around the rotating component as the axis. The rotation of the rotating component drives the connecting plate to rotate around the rotating component as the axis, causing the lifting rod to move up and down, thereby driving the locking component to move up and down.

7. The interlocking operating mechanism for a grounding switch according to claim 1, characterized in that, The electric operating device also includes an electrical interlock detection switch for outputting an electrical interlock signal, and the electrical interlock detection switch is electrically connected to the control circuit. The electrical interlock detection switch is installed inside the cabinet and close to the interlock electromagnet installed inside the cabinet; when the switch cabinet is energized, the interlock electromagnet is energized and attracted, and contacts the electrical interlock detection switch, outputting the electrical interlock signal as a high level; When the control circuit receives a high-level electrical interlocking signal, it can control the closing or opening operation of the grounding switch.

8. The interlocking operating mechanism for a grounding switch according to claim 1, characterized in that, The electric operating device also includes a handcart position detection switch for outputting a handcart position signal, and the handcart position detection switch is electrically connected to the control circuit. The handcart position detection switch is installed inside the cabinet; when the handcart is in the test state, the handcart position detection switch is disconnected from the handcart and outputs a low-level handcart position signal; when the handcart is in the working state, the handcart position detection switch is in contact with the handcart and outputs a high-level handcart position signal. When the control circuit receives a low-level signal from the handcart position signal, it can control the closing or opening operation of the grounding switch.

9. The interlocking operating mechanism for a grounding switch according to claim 1, characterized in that, The electric operating device also includes a cable compartment door closing detection switch, which is used to output a cable compartment door closing signal, and the cable compartment door closing detection switch is electrically connected to the control circuit. The cable compartment door closing detection switch is installed on the door frame structure of the cable compartment. When the door structure of the cable compartment is closed to the door frame structure, the door structure of the cable compartment contacts the cable compartment door closing detection switch, and outputs the cable compartment door closing signal as a high level. When the control circuit receives a high-level signal from the cable compartment door closing, it can control the closing or opening operation of the grounding switch.

10. The interlocking operating mechanism for a grounding switch according to claim 1, characterized in that, The electric operating device also includes a cab door closing detection switch for outputting a cab door closing signal, and the cab door closing detection switch is electrically connected to the control circuit. The handcar compartment door closing detection switch is installed on the door frame structure of the handcar compartment. When the door structure of the handcar compartment is closed to the door frame structure of the handcar compartment, the door structure of the handcar compartment contacts the handcar compartment door closing detection switch, and the handcar compartment door closing signal is output as a high level. When the control circuit receives a high-level signal from the handcart compartment door closing signal, it can control the closing or opening operation of the grounding switch.

11. The interlocking operating mechanism for a grounding switch according to claim 1, characterized in that, The electric operating device also includes a closing position detection switch and an opening position detection switch disposed on the grounding switch, and both the closing position detection switch and the opening position detection switch are electrically connected to the control circuit. When the grounding switch is closed, the closing detection switch outputs a high-level closing signal, and the control circuit can control the grounding switch to perform an opening operation. When the grounding switch is in the open position, the open position detection switch outputs an open position signal at a high level, and the control circuit can control the grounding switch to perform a closing operation.

12. An electrically operated method for an interlocking operating mechanism of a grounding switch, applied in the interlocking operating mechanism as described in any one of claims 1-11, characterized in that, The electric operation method includes: S100: Detect the locking status signal of at least one mechanical interlocking device of the interlocking operation mechanism; wherein, when the locking mechanism of the at least one mechanical interlocking device locks the grounding switch to the closed or open position, the locking status signal is a locking signal; when the locking mechanism of the at least one mechanical interlocking device does not lock the grounding switch to the closed or open position, the locking status signal is an unlocked signal. S200: Determine the information of the lock status signal and determine the status of the lock status signal; if the lock status signal is a locked signal, return to step S100; if the lock status signal is an unlocked signal, proceed to the next step; and S300: Receives user operation instructions and sends a control signal for closing or opening the circuit breaker to the drive device according to the user operation instructions, so as to drive the operating spindle to rotate in the closing direction or the opening direction, thereby controlling the closing or opening operation of the grounding switch.

13. The electric operating method of the interlocking operating mechanism for a grounding switch according to claim 12, characterized in that, Step S100 also includes: A mode switching signal for a detection mode switching device is provided; wherein the mode switching device includes a manual pressure plate and a pressure plate detection switch; when the manual pressure plate is in contact with the pressure plate detection switch, the mode switching signal is an electric signal; when the manual pressure plate is disengaged from the pressure plate detection switch, the mode switching signal is a manual signal. Step S200 also includes: Determine the information of the mode switching signal; if the mode switching signal is an electric signal, proceed to the next step; if the mode switching signal is a manual signal, return to step S100.

14. A switch cabinet, comprising a cabinet body, a grounding switch, an operating spindle, and an interlocking operating mechanism for the grounding switch as described in any one of claims 1 to 11, disposed within the cabinet body; The interlocking operation mechanism includes at least one mechanical interlocking device and an electric operating device; the at least one mechanical interlocking device is connected to the grounding switch through the operating spindle and is used to lock the closed or open position of the grounding switch in manual operation mode; the electric operating device is connected to the grounding switch through the operating spindle and is used to electrically drive the grounding switch to perform a closing or opening operation.

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