Interlocking device and switchgear

Abstract

This invention relates to the field of electrical equipment technology, providing an interlocking device and a switchgear. The interlocking device includes a lock, an interlocking assembly, a toggle member, and a base. The interlocking assembly includes a lock plate and a reset member. The lock plate is movably mounted on the base, and the reset member is mounted on the base and acts on the lock plate. The lock plate has a locking part, an abutment part, and a pressure-bearing part, and the lock plate has a locking position and an unlocking position corresponding vertically in the direction of movement. The lock has a locking part, configured to move towards the lock plate and, when reaching the locking position, the locking part locks onto the locking part of the lock plate in the locking position. The toggle member is movably mounted on the base. The switchgear includes a cabinet, a door, a circuit breaker, and the interlocking device. The cabinet has a mounting cavity for installing the circuit breaker, one end of which is configured as an inlet / outlet. The door is movably mounted at the inlet / outlet to control the opening and closing of the inlet / outlet. This invention enables the safe installation and removal of the circuit breaker.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and more specifically, to an interlocking device and a switch cabinet. Background Technology

[0002] Switchgear equipment often involves the transfer of circuit breakers. Typically, the circuit breaker is transported to the opening of the mounting cavity inside the cabinet by a transfer vehicle. After the valve at the opening is opened, the circuit breaker is then sent into the mounting cavity.

[0003] Therefore, existing transfer methods are prone to situations where the circuit breaker is not installed in the installation chamber or is removed from the installation chamber and returned to the transfer vehicle without closing the valve before the transfer vehicle is withdrawn. If the circuit breaker is not installed in the installation chamber and the transfer vehicle is withdrawn, the circuit breaker may fall. If the circuit breaker is removed from the installation chamber and returned to the transfer vehicle without closing the valve before the transfer vehicle is withdrawn, the valve may be left open, which does not meet the isolation requirements of the switchgear. Summary of the Invention

[0004] To address the shortcomings of existing methods, this invention proposes an interlocking device and switch cabinet to solve the technical problems of the risk of circuit breakers falling into the cabinet and the forgetting to close the valve after the circuit breaker is removed from the switch cabinet.

[0005] In a first aspect, embodiments of the present invention provide an interlocking device, including a lock, an interlocking assembly, a toggle member, and a base; The interlocking assembly includes a locking plate and a reset member. The locking plate is movably mounted on the base, and the reset member is mounted on the base and acts on the locking plate. The locking plate is provided with a locking part, an abutting part, and a pressure-bearing part. The locking plate has a locking position and an unlocking position corresponding to each other in the moving direction. The lock is provided with a locking part, and the lock is configured to move toward the lock plate and, when it reaches the locking position, the locking part locks onto the locking part of the lock plate in the locking position. The actuating member is movably disposed on the base. in, External force is applied directly to the abutment part or through the actuating member to drive the locking plate from the locked position to the unlocked position to unlock the locking part and the locking position part. When the external force is removed, the reset member resets the locking plate located in the unlocked position to the locked position.

[0006] Optionally, the locking plate includes a base plate, a locking plate, an abutment plate, and a pressure plate; The positioning plate, the abutment plate, and the pressure plate are all disposed on the top of the base plate. The top of the positioning plate corresponds to the positioning part, the top of the abutment plate corresponds to the abutment part, and the top of the pressure plate corresponds to the pressure-bearing part.

[0007] Optionally, in the direction in which the lock moves toward the lock plate, the front side of the abutment plate is provided with an abutment slope arranged from low to high for external force application.

[0008] Optionally, the reset member is disposed on the base, and the reset member includes a push rod, an abutment ring, and a spring, wherein the push rod is always in close contact with the base plate under the action of the spring.

[0009] Optionally, the actuating element includes a rotating plate and a pushing block; The rotating plate is rotatably mounted on the base and located above the pressure plate of the locking plate. The rotating plate is fixed to the base by a positioning pin and can rotate around the positioning pin. One end of the rotating plate is the working end, and the other end is a counterweight end with a round pin head. The counterweight end of the rotating plate is always in close contact with the pressure-bearing part of the pressure plate under its own weight.

[0010] When the pushing block moves upward under the action of external force, the pushing block pushes the working end of the rotating plate upward and makes it rotate clockwise around the positioning pin. At this time, the counterweight end of the rotating plate acts on the pressure bearing part of the pressure plate. Since the pressure bearing plate is part of the locking plate, and the locking plate is movably mounted on the base, the locking plate is forced to move downward. That is, the clockwise rotation of the rotating plate can make the locking plate move downward, so that the locking plate located in the locking position moves towards the unlocking position.

[0011] Optionally, the mass of the force-bearing end of the rotating plate is less than that of the counterweight end of the rotating plate, and the counterweight end of the rotating plate remains in close contact with the pressure-bearing part of the pressure plate under its own weight, that is, it is in continuous contact with the locking plate.

[0012] Optionally, the pushing block is provided with an inclined surface on the side near the working end of the rotating plate for contacting the working end of the rotating plate, and the inclined surface extends from bottom to top in a direction away from the rotating plate.

[0013] Optionally, the lock is a locking rod, and the locking part is a slot provided in the locking rod, which is installed facing downwards.

[0014] Optionally, it also includes a guide sleeve, which is disposed on the rear side of the locking part in the direction in which the locking member moves toward the locking plate. That is, when the locking member moves toward the locking plate, it first passes through the locking part and then enters the guide sleeve. When the locking element is in the latch position, the locking element completely passes through the guide sleeve.

[0015] Optionally, the guide sleeve is provided with a insertion hole for inserting the lock, and the insertion hole is flared at the end closest to the first lock inserted.

[0016] Secondly, embodiments of the present invention provide a switch cabinet, including a cabinet body, a door, a circuit breaker, and an interlocking device as described above; The cabinet is provided with a mounting cavity for installing the circuit breaker. One end of the mounting cavity is configured as an inlet / outlet for the circuit breaker to enter and exit. The valve is movably disposed at the inlet / outlet to control the opening and closing of the inlet / outlet. The interlocking assembly, the actuating element, and the base are located at the inlet / outlet and on the outside of the valve; The locking element is located at one end of a transfer vehicle used for transporting the circuit breaker. When the circuit breaker is installed into the mounting cavity, it acts on the abutment portion to move the locking plate, which is located in the locking position, to the unlocking position. Alternatively, the valve closes and applies external force to the actuating member, which drives the locking plate from the locked position to the unlocked position to unlock the locking part from the locking part.

[0017] The beneficial technical effects brought about by the technical solutions provided in the embodiments of the present invention include: When the circuit breaker is installed in the mounting cavity, the locking and locking parts are unlocked by pressing down on the abutment part of the circuit breaker. This ensures that the circuit breaker enters the mounting cavity first, before the transfer cart is allowed to detach from the cabinet. Secondly, after the circuit breaker exits the mounting cavity and is transferred to the transfer cart, the valve must be closed first to press down the locking plate via the actuating element. Only after the locking and locking parts are unlocked can the transfer cart and cabinet detach. In summary, the interlocking device limits the unlocking conditions of the transfer cart and cabinet, preventing the circuit breaker from falling if the transfer cart is moved when the circuit breaker enters the mounting cavity, and preventing the valve from being left open if the transfer cart is moved after the circuit breaker exits the mounting cavity.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of an interlocking device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an interlocking device with the lock plate in the unlocking position, provided in an embodiment of the present invention. Figure 3This is a schematic diagram of the structure of an interlocking device provided in an embodiment of the present invention, showing the lock plate in the locking position and the lock element in the latch position; Figure 4 This is a schematic diagram showing the position and state of each component of an interlocking device and a valve when they are in the closed position, provided by an embodiment of the present invention. Figure 5 A schematic diagram showing the positions and states of various components of an interlocking device and a valve in the non-closed and non-open positions, provided for an embodiment of the present invention. Figure 6 for Figure 4 Side view of the central valve in the closed position; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 A schematic diagram of a switch cabinet provided for an embodiment of the present invention; Figure 9 for Figure 8 Enlarged view of point B in the middle; Figure 10 for Figure 8 Enlarged diagram of point C in the middle.

[0020] The meanings of the reference numerals in the attached figures are as follows: 10. Locking component; 101. Locking part; 20. Interlocking assembly; 21. Lock plate; 211. Base plate; 212. Positioning plate; 213. Abutting plate; 2101. Positioning part; 2102. Abutting part; 21301. Abutting slope; 22. Reset component; 221. Spring; 222. Push rod; 223. Abutting ring; 30. Actuating component; 31. Rotating plate; 32. Push block; 3201. Acting slope; 40. Base; 50. Guide sleeve; 53. Pressure plate; 5301. Pressure bearing part; 54. Positioning pin; 60. Cabinet; 601. Mounting cavity; 6011. Inlet / outlet; 70. Door; 80. Circuit breaker; 90. Transfer cart. Detailed Implementation

[0021] The present invention will now be described in detail. Examples of embodiments of the invention are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. Furthermore, detailed descriptions of known technologies that are unnecessary for the features of the illustrated invention are omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention.

[0022] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0023] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0024] The present invention provides an interlocking device and switch cabinet, which aims to solve the above-mentioned technical problems of the prior art.

[0025] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0026] This invention provides an interlocking device product, the structural schematic diagram of which is shown below. Figures 1 to 3 As shown, it includes: The lock 10, interlocking assembly 20, actuating member 30, and base 40 are included. The interlocking assembly 20 includes a lock plate 21 and a reset member 22. The lock plate 21 is movably mounted on the base 40. The reset member 22 is mounted on the base 40 and acts on the lock plate 21. The lock plate 21 is provided with a locking part 2101, an abutting part 2102, and a pressure bearing part 5301. The lock plate 21 has a locking position and an unlocking position corresponding to each other in the moving direction. The lock 10 is provided with a locking part 101. The lock 10 is configured to move toward the lock plate 21 and when it reaches the locking position, the locking part 101 locks onto the locking part 2101 of the lock plate 21 located in the locking position. The actuating member 30 is movably mounted relative to the base 40.

[0027] The external force is applied directly to the abutment part 2102 or through the actuating member 30 to the pressure-bearing part 5301 to drive the locking plate 21 from the locked position to the unlocked position to unlock the locking part 101 and the locking part 2101. When the external force is removed, the reset member 22 resets the locking plate 21 in the unlocked position to the locked position.

[0028] In this embodiment, the locking structure between the locking plate 21 and the locking member 10 is a latching relationship between the locking part 101 and the locking position part 2101, which establishes a connection between the locking member 10 and the interlocking assembly 20. The lowering of the locking plate 21 is triggered in two ways: first, the abutment part 2102 drives the entire locking plate 21 downward under external force; second, the actuating member 30 drives the entire locking plate 21 downward under external force. The raising and lowering of the locking plate 21 involves switching between the locked and unlocked positions. Specifically, the locking plate 21 lowers to the unlocked position to establish the latching relationship between the locking part 101 and the locking position part 2101. Conversely, the restoration of the locking relationship occurs when the external force is removed, and the reset member 22 drives the locking plate 21 to reset.

[0029] Optionally, the locking plate 21 includes a base plate 211, a locking plate 212, an abutment plate 213, and a pressure plate 53; the locking plate 212, the abutment plate 213, and the pressure plate 53 are all located on the top of the base plate 211, the top of the locking plate 212 corresponds to the locking part 2101, the top of the abutment plate 213 corresponds to the abutment part 2102, and the top of the pressure plate 53 corresponds to the pressure-bearing part 5301.

[0030] For example, the locking plate 212, the abutment plate 213, and the pressure plate 53 are arranged on two adjacent sides above the base plate 211. Taking the direction of movement of the locking member 10 toward the locking plate 21 as the reference axis, the axis of the locking member 10 is perpendicular to the length direction of the locking plate 212 and parallel to the length direction of the abutment plate 213, respectively.

[0031] Specifically, the locking part 2101 is the upper edge of the locking plate 212. When the locking part 101 of the locking member 10 moves to the latching position and the locking plate 21 moves to the locked position, the locking part 101 latches onto the upper edge of the locking plate 212. Corresponding to the unlocking of the locking member 10 and the locking plate 21, it can be seen that the latching position of the locking part 101 and the locking plate 212 is at the top of the locking plate 212. Therefore, the downward movement of the locking plate 21 is regarded as its unlocking from the locking part 101. The unlocking depends on one of the two descent triggering methods of the locking plate 21 mentioned above, which will not be repeated here.

[0032] Optionally, in the direction in which the locking member 10 moves toward the locking plate 21, the front side of the abutment plate 213 is provided with an abutment slope 21301 for external force application, which is arranged from low to high.

[0033] In this embodiment, the abutting inclined surface 21301 is used to receive external forces from the horizontal direction. When the external forces from the horizontal direction act on the abutting inclined surface 21301, the abutting inclined surface 21301 will not cause the abutting plate 213 to descend and get stuck.

[0034] Optionally, the reset member 22 is disposed on the base 40 and acts on the bottom of the base plate 211.

[0035] For example, the reset component 22 can be selected as a spring assembly, a cylinder, or other components. In this embodiment, a spring assembly is preferred. When the locking plate 21 is in the locked position, the spring 221 is considered to be in its initial state. When the locking plate 21 descends from the locked position to the unlocked position, it means that the bottom plate 211 presses down on the push rod 222 of the reset component 22, causing the spring 221 to compress and store energy. The upper pressure end of the spring 221 and the abutment ring 223 move synchronously under the pressure of the push rod 222. When the external force is removed, the spring 221 releases energy and resets. At the same time, the abutment ring 223 pushes the push rod 222 upward until the push rod 222 pushes the locking plate 21 to the locked position.

[0036] Optionally, the actuating element 30 includes a rotating plate 31 and a pushing block 32; the rotating plate 31 is rotatably mounted on the base 40 and located above the bottom plate 211, one end of the rotating plate 31 is the working end, and the other end is the counterweight end with a round pin head, and the pushing block 32 is movably mounted on the working end side of the rotating plate 31 relative to the bottom plate 211.

[0037] In this embodiment, the rotational stroke of the rotating plate 31 is converted into the linear stroke of the locking plate 21. In this embodiment, when the pushing block 32 moves upward under the action of external force, the pushing block 32 pushes the working end of the rotating plate 31 upward and makes it rotate clockwise around the positioning pin 54. At this time, the counterweight end of the rotating plate 31 acts on the bearing part 5301 of the pressure plate 53. Since the pressure plate 53 is part of the locking plate 21, and the locking plate 21 is movably mounted on the base 40, the locking plate 21 is subjected to downward force. That is, the clockwise rotation of the rotating plate 31 can make the locking plate 21 move downward, so that the locking plate 21 in the locked position moves to the unlocked position. In this state, the locking part 2101 can be separated from the locking part 101 to release the locking relationship. Conversely, when the pushing block 32 moves downward and finally separates from the working end of the rotating plate 31, the working end of the rotating plate 31 no longer applies a continuous downward force to the locking plate 21. Then, as mentioned above, the reset member 22 lifts the locking plate 21 to reset it to the locked position.

[0038] Optionally, the mass of the working end of the rotating plate 31 is less than that of the counterweight end of the rotating plate 31. Under its own weight, the counterweight end of the rotating plate 31 is always in close contact with the pressure-bearing part 5301 of the pressure plate 53, that is, it is in continuous contact with the locking plate 21.

[0039] As can be seen from the foregoing, the rotating plate 31 is rotatably mounted relative to the base 40. In this embodiment, the rotating plate 31 is mounted with a long and short arm around the axis of the positioning pin 54. The working end of the rotating plate 31 is the short end, and the counterweight end of the rotating plate 31 is the long end. Under the combined action of the long arm and the counterweight, the counterweight end of the rotating plate 31 can continuously contact the locking plate 21 by its own weight. In this way, the rotating plate 31 will not be suspended on the base 40, thus avoiding the random rotation of the rotating plate 31.

[0040] Additionally, it should be noted that the correct understanding of the aforementioned continuous contact with the locking plate 21 under its own weight is that, regardless of whether the locking plate 21 is in the locked or unlocked position, the counterweight end of the rotating plate 31 is always in contact with the top pressure-bearing portion 5301 of the pressure plate 53 of the locking plate 21. Furthermore, the action of the pushing block 32 on the rotating plate 31 only applies an external force to the rotating plate 31 to drive the locking plate downward.

[0041] Optionally, the push block 32 is provided with an inclined surface 3201 for contacting the working end of the rotating plate 31 on the side near the working end of the rotating plate 31. The inclined surface 3201 extends from bottom to top in a direction away from the rotating plate 31.

[0042] In this embodiment, the inclined surface 3201 serves as a sliding contact limiting surface when the pushing block 32 interacts with the working end of the rotating plate 31, ensuring a smooth and reliable contact between the inclined surface 3201 and the working end of the rotating plate 31. Similarly, the working end of the rotating plate 31 is set as an arc, which makes the contact smoother.

[0043] Optionally, the lock 10 is a lock bar, and the locking part 101 is a slot provided on the lock bar, which is installed facing downwards.

[0044] For example, this embodiment uses a round rod as an example for illustration. Taking the direction of movement of the locking member 10 toward the locking plate 21 as a reference, specifically, when the locking position acts as a latch, the locking plate 21 is in the locking position. At this time, the locking part 101 of the locking member 10 is set downward and located in the latching position. At this time, the locking plate 212 is located in the locking part 101 slot, and the locking part 2101 abuts against the locking part 101 slot. In this state, the locking member 10 cannot be moved, preventing the locking member 10 from moving further in its own axial direction. When the locking plate 21 in the locking position is driven to the unlocking position by either of the two aforementioned descent triggering methods, the locking member 10 can be moved away from the base 40 along its axial direction from the latching position. In the above state, without removing the locking member 10 and removing the external force from the rotating plate 31 or the abutment part 2102 on the locking plate 21, the reset member 22 resets the locking plate 21 to the locking position, and the locking plate 212 is located in the slot of the locking part 101. The locking part 2101 abuts against the slot of the locking part 101. In this state, the locking member 10 cannot remove the locking plate 212 and return to the locking position to be inserted into the slot of the locking member 10, thus preventing the locking rod from moving again in its own axial direction.

[0045] Optionally, it also includes a guide sleeve 50, which is disposed on the base 40 to provide guidance when the lock 10 is inserted into the cabinet, and the insertion hole is set as a flared mouth at the end near the first insertion of the lock 10.

[0046] When the locking element 10 is in the latch position, the locking element 10 completely passes through the guide sleeve 50.

[0047] In this embodiment, it is known that the guide sleeve 50 is provided with a plug hole for the lock 10 to be inserted into the cabinet. The guide sleeve 50 is set on the base 40. The overlapping surface of the guide sleeve 50 and the base 40 has a cavity for the card plate 212 to pass through. This cavity also serves as a limiting guide for the card plate 212.

[0048] For example, the insertion hole of the aforementioned guide sleeve 50 near the locking plate 212 is a flared opening, which facilitates the insertion of the locking rod.

[0049] Based on the same inventive concept, see [reference] Figures 4 to 10 This invention provides a switch cabinet, including a cabinet body 60, a door 70, a circuit breaker 80, and an interlocking device as described above.

[0050] The cabinet 60 is provided with a mounting cavity 601 for installing the circuit breaker 80. One end of the mounting cavity 601 is set as an inlet / outlet 6011 for the circuit breaker 80 to enter and exit. A valve 70 is movably installed at the inlet / outlet 6011 to control the opening and closing of the inlet / outlet 6011. The interlocking assembly 20, the actuating element 30 and the base 40 are located below the inlet / outlet 6011 and outside the valve 70.

[0051] The locking element 10 is disposed at one end of the transfer vehicle 90 used as the transfer circuit breaker 80. When the circuit breaker 80 is installed into the mounting cavity 601, it acts on the abutment part 2102 to move the locking plate 21, which is in the locked position, to the unlocked position; or, the valve 70 closes and applies external force to the actuating element 30, which drives the locking plate 21 from the locked position to the unlocked position to unlock the locking part 101 and the locking part 2101.

[0052] This embodiment illustrates the practical application of the aforementioned interlocking device in a switchgear. First, it should be clarified that the valve 70 moves up and down at the inlet / outlet 6011; rising closes the inlet / outlet 6011, and falling opens it. Other methods for driving the valve 70 to move up and down include rack and pinion, lead screw, belt drive, chain drive, etc., which are existing technologies and will not be elaborated upon here.

[0053] Specifically, according to existing technology, the circuit breaker 80 is generally transferred to the inlet / outlet 6011 via a transfer cart 90, and then the circuit breaker 80 is transferred into the mounting cavity 601. The locking element 10 is, for example, a round rod. Therefore, it can be confirmed that the round rod is located at one end of the transfer cart 90. More specifically, one end of the locking element 10 is connected to the transfer cart 90, with the slot facing downwards. When the locking element 10 is active, the highest point of the locking part 101 of the locking element 10 abuts against the upper edge of the locking plate 212, and the locking plate 212 is embedded in the slot of the locking part 101. Furthermore, one or two sets of interlocking devices can be installed. In the two-set interlocking device scheme, two locking elements 10 are located on both sides of one end of the transfer cart 90, and other components are correspondingly located on both sides from the inlet / outlet 6011. Of course, the interlocking devices are aligned in spatial position as the interlocking components are previously mentioned, which will not be elaborated upon here.

[0054] The other components are: push block 32 is located at the lower end of the door 70 on the side facing the base 40, and base 40 is located on the cabinet 60 and on the outer side of the door 70.

[0055] In the initial state, the valve 70 is closed, the inclined surface 3201 of the push block 32 continuously acts on the working end of the rotating plate 31, the locking plate 21 remains in the unlocked position, the spring 221 of the reset member 22 is compressed and stored energy, and the circuit breaker 80 is located on the transfer vehicle 90.

[0056] The process of installing the circuit breaker 80 into the mounting cavity 601 is as follows: the transfer cart 90 moves towards the inlet / outlet 6011 with the end equipped with the locking element 10 as the front end. This process can also be understood as the aforementioned movement of the locking element 10 towards the locking plate 21. When the locking element 10 reaches the inlet / outlet 6011, the locking element 10 is aligned with the guide sleeve 50. At this time, the transfer cart 90 is continuously pushed forward. The front end of the locking element 10 crosses the locking plate 21, which is held in the unlocked position, and then inserts into the guide sleeve 50. At the same time, the locking part 101 of the locking element 10 reaches above the locking plate 212, and the transfer cart 90 contacts the cabinet 60 and stops. Then, the valve 70 is operated to move downward until the inlet / outlet 6011 is fully opened. At this time, the action slope 3201 of the pushing block 32 and the action end of the rotating plate 31 have already separated in the initial stage of the valve 70's descent. Thus, the locking plate 21 is no longer subjected to the continuous downward pressure of the counterweight end of the rotating plate 31. The reset part 22 pushes the locking plate 21 upward to return to the locked position, and the locking is completed. The upper edge of plate 212 is engaged in the locking part 101 slot of lock 10. At this time, the transfer cart 90 and the cabinet 60 are interlocked and cannot be moved. Then, the circuit breaker 80 can be sent into the installation cavity 601. At this time, the circuit breaker 80 acts on the abutting inclined surface 21301 to push the lock plate 21 downward to the unlock position. The final state is: the circuit breaker 80 is fully installed in the installation cavity 601 and pressed on the top of the abutting part 2102. At this time, the lock plate 21 is in the unlock position. Since the lock plate 21 is in the unlock position, the locking plate 212 is disengaged from the locking part 101 slot of lock 10. At this time, the transfer cart 90 can be moved away from the cabinet 60. The valve 70 remains open and the lock plate 21 remains in the unlock position.

[0057] Conversely, the process of removing the circuit breaker 80 from the mounting cavity 601 involves first moving the transfer cart 90 to the open side, ensuring that the locking member 10 of the transfer cart 90 passes back through the guide sleeve 50 and the locking part 101 of the locking member 10 is above the locking plate 212. At this point, the transfer cart 90 is in contact with the cabinet and cannot be pushed forward any further. Then, the circuit breaker 80 is transferred onto the transfer cart 90. At this point, without the continuous downward pressure provided by the circuit breaker 80, the locking plate 21 moves from the unlocked position to the locked position under the action of the reset member 22. The upper edge of the locking plate 212 re-engages with the locking part 101 of the locking member 10. In this state, the locking member 10 cannot be pulled out of the cabinet 60, meaning that the transfer cart 90 with the locking member 10 installed cannot be pulled out and moved from the cabinet 60. At this point, the valve 70 needs to be closed. During the closing process, the inclined surface 3201 of the push block 32 acts again on the action end of the rotating plate 31. The counterweight end of the rotating plate 31 moves downward and pushes the locking plate 21 towards the unlocking position. When the valve 70 is fully closed, the locking plate 21 reaches the unlocking position, and the upper part of the locking plate 212 disengages from the locking part 101 slot of the lock 10. At this time, the lock 10 is no longer locked by the locking plate 21 and can be moved. That is, the transfer cart 90 with the lock 10 installed can be moved away from the front of the cabinet 60. In this way, the transfer cart 90 and the circuit breaker 80 can be transferred to other locations. As can be seen from the above, when there is no circuit breaker 80 in the cabinet 60, the lock 10 of the transfer cart 90 can only be released from the locked position and moved away from the front of the cabinet 60 after the valve 70 is closed, so that the valve 70 will not be forgotten to be closed.

[0058] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, and processes discussed in this invention can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this invention can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the prior art that are similar to those disclosed in this invention can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0059] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0061] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0062] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0063] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0064] The above description is only a partial embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An interlocking device, characterized in that, It includes a locking element (10), an interlocking assembly (20), a toggle element (30), and a base (40); The interlocking assembly (20) includes a locking plate (21) and a reset member (22). The locking plate (21) is movably mounted on the base (40). The reset member (22) is mounted on the base (40) and acts on the locking plate (21). The locking plate (21) is provided with a locking part (2101), an abutment part (2102), and a pressure bearing part (5301). The locking plate (21) has a locking position and an unlocking position corresponding to each other in the moving direction. The lock (10) is provided with a locking part (101), the lock (10) is configured to move toward the lock plate (21) and when it reaches the locking position, the locking part (101) locks onto the locking part (2101) of the lock plate (21) in the locking position, and the actuating member (30) is movably disposed relative to the base (40); in, External force is applied directly to the abutment part (2102) or through the actuating member (30) to the pressure bearing part (5301) to drive the locking plate (21) to move from the locked position to the unlocked position to unlock the locking part (101) and the locking part (2101). When the external force is removed, the reset member (22) will act on the locking plate (21) in the unlocked position and reset it to the locked position.

2. The interlocking device according to claim 1, characterized in that, The locking plate (21) includes a base plate (211), a locking plate (212), an abutment plate (213), and a pressure plate (53). The positioning plate (212), the abutment plate (213), and the pressure plate (53) are all disposed on the top of the base plate (211). The top of the positioning plate (212) corresponds to the positioning part (2101), the top of the abutment plate (213) corresponds to the abutment part (2102), and the top of the pressure plate (53) corresponds to the pressure part (5301).

3. The interlocking device according to claim 2, characterized in that, In the direction in which the lock (10) moves toward the lock plate (21), the front side of the abutment plate (213) is provided with an abutment slope (21301) for external force action, which is arranged from low to high.

4. The interlocking device according to claim 2, characterized in that, The reset component (22) is disposed on the base (40). The reset component (22) includes a spring (221), a push rod (222), and an abutment ring (223). The push rod (222) is always in close contact with the base plate (211) under the action of the spring (221).

5. The interlocking device according to claim 2, characterized in that, The actuating element (30) includes a rotating plate (31) and a pushing block (32); The rotating plate (31) is rotatably mounted on the base (40) and located above the pressure plate (53) of the locking plate (21). The rotating plate (31) is fixed to the base (40) by a positioning pin (54) and the rotating plate (31) can rotate around the positioning pin (54). One end of the rotating plate (31) is the working end, and the other end is the counterweight end with a round pin head. The counterweight end of the rotating plate (31) is always in close contact with the pressure-bearing part (5301) of the pressure plate (53) under its own weight. When the push block (32) moves from bottom to top under the action of external force, the push block (32) pushes the action end of the rotating plate (31) upward and makes it rotate clockwise around the positioning pin (54). At this time, the counterweight end of the rotating plate (31) acts on the pressure bearing part (5301) of the pressure plate (53). Since the pressure plate (53) is part of the locking plate (21), the locking plate (21) is movably mounted on the base (40). Therefore, the locking plate (21) is subjected to force and moves downward. That is, the clockwise rotation of the rotating plate (31) can make the locking plate (21) move downward, so that the locking plate (21) located in the locking position moves towards the unlocking position.

6. The interlocking device according to claim 5, characterized in that, The mass of the working end of the rotating plate (31) is less than that of the counterweight end of the rotating plate (31). Under its own weight, the counterweight end of the rotating plate (31) is always in close contact with the pressure-bearing part (5301) of the pressure plate (53), that is, it is in continuous contact with the locking plate (21).

7. The interlocking device according to claim 5, characterized in that, The push block (32) has an inclined surface (3201) on the side of the action end near the rotating plate (31) for contacting the action end of the rotating plate (31). The inclined surface (3201) extends from bottom to top in a direction away from the rotating plate (31).

8. The interlocking device according to claim 1, characterized in that, The lock (10) is a lock rod, and the locking part (101) is a slot provided on the lock rod, which is installed facing downwards.

9. The interlocking device according to any one of claims 1-8, characterized in that, It also includes a guide sleeve (50). In the direction in which the lock (10) moves toward the lock plate (21), the guide sleeve (50) is located behind the locking part (2101). That is, when the lock (10) moves toward the lock plate (21), it first passes through the locking part (2101) and then enters the guide sleeve (50). When the locking member (10) is located in the latch position, the locking member (10) completely passes through the guide sleeve (50).

10. A switch cabinet, characterized in that, Includes a cabinet (60), a door (70), a circuit breaker (80), and an interlocking device as described in any one of claims 1-9 above; The cabinet (60) is provided with a mounting cavity (601) for installing the circuit breaker (80). One end of the mounting cavity (601) is provided as an inlet (6011) for the circuit breaker (80) to enter and exit. The valve (70) is movably provided at the inlet (6011) to control the opening and closing of the inlet (6011). The interlocking assembly (20), the actuating element (30), and the base (40) are located at the inlet / outlet (6011) and outside the valve (70); The locking element (10) is disposed at one end of the transfer vehicle (90) used for transferring the circuit breaker (80). When the circuit breaker (80) is installed into the mounting cavity (601), it acts on the abutment part (2102) to move the locking plate (21) located in the locking position to the unlocking position. Alternatively, the valve (70) closes and applies external force to the actuating member (30), which drives the locking plate (21) from the locked position to the unlocked position to unlock the locking part (101) and the locking part (2101).

Images