Upper and lower interlocking system for new energy power generation

Abstract

The invention discloses a superior and subordinate interlocking system for new energy power generation, which comprises a superior load switch, a subordinate grounding switch, an upper interlocking device and a lower interlocking device, and is characterized in that the upper interlocking device is mounted on the superior load switch, and the lower interlocking device is mounted on the subordinate grounding switch; and the upper interlocking device is matched with the lower interlocking device. The beneficial effects of the invention are that under the action of the interlocking mechanism, when the upper-level load switch is in a closed state, the lower-level grounding switch cannot be closed; when the lower-stage grounding switch is at the closing position, the upper-stage load switch cannot be closed; in this way, the two switches are switched on or switched off according to a set sequence, so that short circuit faults or fire disasters caused by manual misoperation are effectively avoided, and the safety is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of power equipment, and in particular to an upper and lower level interlocking system for new energy power generation. Background Art

[0002] In new energy power generation projects, each transformer or fan is connected hand in hand through load switch cabinets to form a collector line, and there must be an interlock between the upper and lower level load switches. The interlock principle is as follows: when the upper level load switch is in the closed state, the grounding switch in the lower level load switch cannot be closed; when the grounding switch in the lower level load switch is in the closed position, the upper level load switch cannot be manually or electrically closed. The existing methods mostly involve hanging locks on the switch cabinet doors. This method is overly affected by human subjective factors, that is, there are situations of human operation errors. For example, when the upper level load switch is closed, the lower level grounding switch is accidentally closed, which may lead to a short circuit fault and even possibly cause a fire. Therefore, an upper and lower level interlocking system for new energy power generation is proposed to solve the above technical problems. Summary of the Invention

[0003] One of the purposes of this application is to provide an upper and lower level interlocking system for new energy power generation.

[0004] To achieve the above purpose, the technical solution adopted in this application is: an upper and lower level interlocking system for new energy power generation, including an upper level load switch, a lower level grounding switch, an upper interlocking device, and a lower interlocking device. The upper interlocking device is installed on the upper level load switch, the lower interlocking device is installed on the lower level grounding switch, and the upper interlocking device and the lower interlocking device cooperate with each other; when the upper level load switch is in the closed state, at this time the lower interlocking device is adapted to lock the lower level grounding switch, and the lower level grounding switch is in the open state; when the lower level grounding switch is in the closed state, at this time the upper interlocking device is adapted to lock the upper level load switch, and the upper level load switch is in the open state.

[0005] Preferably, the upper interlocking device includes an upper lock body and an upper limit module, and the lower interlocking device includes a lower lock body and a lower limit module; the upper lock body and the upper limit module are both installed on the upper-level load switch and cooperate with each other, and the lower lock body and the lower limit module are both installed on the lower-level earthing switch and cooperate with each other; the upper lock body and the lower lock body are one-of-two lock bodies and share one key; when the upper lock body or the lower lock body is in the closed state, the key cannot be pulled out; when the upper lock body or the lower lock body is in the open state, the key is suitable for free insertion and extraction; when the upper lock body is in the open state, the upper limit module is suitable for locking the upper-level load switch, and at this time the upper-level load switch is in the open state; when the lower lock body is in the open state, the lower limit module is suitable for locking the lower-level earthing switch, and at this time the lower-level earthing switch is in the open state.

[0006] Preferably, a closing and opening indicating board is installed on the main shaft of the lower-level earthing switch, and a lower operation opening is arranged on the side of the lower-level earthing switch; the lower limit module includes a lower interlocking board and a guiding structure, the lower interlocking board is installed on the locking tongue of the lower lock body, and the lower interlocking board and the closing and opening indicating board are cooperatively connected through the guiding structure; when the lower lock body is in the open state, the lower interlocking board is suitable for blocking the lower operation opening, and the lower interlocking board is suitable for locking the closing and opening indicating board through the guiding structure, and at this time the lower-level earthing switch is in the open state and cannot be operated.

[0007] Preferably, the guiding structure includes a guiding rod and a guiding groove that cooperate with each other, the guiding rod is installed on the closing and opening indicating board, and the guiding groove is arranged on the lower interlocking board; the guiding groove includes an arc groove and a straight groove in a horizontal state that are communicated with each other; when the lower lock body is in the closed state, the guiding rod cooperates with the arc groove, and at this time the lower-level earthing switch is suitable for closing or opening; when the lower lock body is in the open state, the guiding rod cooperates with the straight groove and is displaced from the arc groove to lock the closing and opening indicating board.

[0008] Preferably, an upper operation opening is provided on the side of the upper load switch. The upper limit module includes an upper interlocking plate, a first baffle, and a second baffle. The upper interlocking plate is elastically and vertically slidably installed on the side of the upper load switch. The first baffle is installed on the locking tongue of the upper lock body and cooperates with the upper interlocking plate through a limit component. The second baffle is installed on the toggle arm in the upper load switch. When the upper lock body is in the open state, the upper interlocking plate is adapted to block the upper operation opening, and the first baffle is adapted to lock the upper interlocking plate through the limit component. At this time, the upper load switch is in the open state and cannot be operated. When the upper lock body is in the closed state, the first baffle is adapted to release the lock on the upper interlocking plate through the limit component. Subsequently, the upper interlocking plate is adapted to move downward to expose the upper operation opening for closing operation. At this time, the upper interlocking plate is adapted to lock the first baffle through the limit component to keep the upper lock body in the closed state. When the upper load switch is in the closed state, the second baffle is adapted to limit the locking tongue of the upper lock body under the action of the toggle arm to keep the upper lock body in the closed state.

[0009] Preferably, the limit component includes a limit groove and a limit block. The limit groove is horizontally arranged on the first baffle, and the limit block is horizontally arranged on the upper interlocking plate. When the upper lock body is in the open state, the limit groove cooperates with the limit block to realize the vertical locking of the upper interlocking plate. When the upper lock body is in the closed state, the limit groove is adapted to separate from the limit block under the drive of the first baffle to release the lock on the upper interlocking plate. When the upper interlocking plate moves downward, the limit block cooperates with the side of the first baffle to realize the locking of the first baffle.

[0010] Preferably, a travel switch is provided on the side of the upper load switch. When the upper lock body is in the open state, the first baffle cooperates with the travel switch to make the electric closing circuit connected to the travel switch in an open state.

[0011] Preferably, a trip knob is provided on the side of the upper load switch. The trip knob and the upper interlocking plate are cooperated through a limit structure. When the upper load switch is in the open state, the upper interlocking plate is adapted to lock the trip knob through the limit structure.

[0012] Preferably, both sides of the trip knob are flat openings. The limit structure includes a card slot arranged on the side of the upper interlocking plate. The flat openings of the trip knob are snap-fitted with the card slot to realize the locking of the trip knob.

[0013] Preferably, a screw hole is provided on the side of the opening and closing indicator board, and a bolt is installed in the screw hole to form the guide rod.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows: By providing an interlocking mechanism, under the action of the interlocking mechanism, when the upper load switch is in the closed state, the lower earthing switch cannot be closed; when the lower earthing switch is in the closed position, the upper load switch cannot be closed; in this way, the two switches are closed or opened in a set order, thus effectively avoiding the occurrence of short-circuit faults or fires caused by human operation errors, and greatly improving the safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the lower earthing switch of the present invention.

[0016] Figure 2 It is a schematic diagram of the closed state of the lower earthing switch of the present invention.

[0017] Figure 3 It is a schematic diagram of the open state of the lower earthing switch of the present invention.

[0018] Figure 4 It is a schematic diagram of the open state of the lower lock body of the present invention.

[0019] Figure 5 It is a schematic diagram of the guiding structure of the present invention.

[0020] Figure 6 It is a schematic diagram of the specific structure of the guiding groove of the present invention.

[0021] Figure 7 It is a schematic diagram of the specific structure of the opening and closing indicator board of the present invention.

[0022] Figure 8 It is a schematic diagram of the principle when the one-out-of-two mechanical lock of the present invention is opened and closed.

[0023] Figure 9 It is a schematic diagram of the overall structure of the upper load switch of the present invention.

[0024] Figure 10 It is a schematic diagram of the side view structure of the upper load switch of the present invention.

[0025] Figure 11 It is a schematic diagram of the open state of the upper load switch of the present invention.

[0026] Figure 12 It is a schematic diagram of the closed state of the lower lock body of the present invention.

[0027] Figure 13 It is a schematic diagram of the cooperation between the upper interlocking plate and the first baffle of the present invention.

[0028] Figure 14 It is a schematic diagram of the cooperation between the upper interlocking plate and the opening knob of the present invention.

[0029] Figure 15 It is a schematic diagram of the closing state of the upper load switch of the present invention.

[0030] Figure 16 It is a schematic diagram of the state after the upper interlocking plate of the present invention is reset.

[0031] Figure 17 It is a schematic diagram of the cooperation between the toggle arm, baffle two, upper lock body, baffle one and the travel switch of the present invention.

[0032] In the figure: 1, lower grounding switch; 101, main shaft body; 2, upper load switch; 201, toggle arm; 3, lower lock body; 4, upper lock body; 5, lower limit module; 501, lower interlocking plate; 502, guiding structure; 5021, guiding groove; 50211, arc groove; 50212, straight groove; 5022, guiding rod; 6, upper limit module; 601, upper interlocking plate; 602, baffle one; 603, baffle two; 7, opening and closing indicating plate; 701, arc plate; 702, indicating member; 8, lower operation port; 9, bolt; 10, lock tongue; 11, key; 12, return spring; 13, upper operation port; 14, opening knob; 15, limiting component; 1501, limiting groove; 1502, limiting block; 16, limiting structure; 1601, clamping groove; 17, round groove; 18, flat opening; 19, travel switch. Detailed implementation manners

[0033] Next, in combination with the detailed implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, any combination can be formed among the following-described embodiments or technical features to form a new embodiment.

[0034] In the description of the present application, it should be noted that for orientation terms, if there are terms such as "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation and position relationship is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

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

[0036] One preferred embodiment of the present application is as follows Figures 1 to 17 As shown, a superior-inferior interlocking system for new energy power generation includes a superior load switch 2, an inferior grounding switch 1, and an interlocking mechanism. The superior load switch 2 is adapted to be cooperatively connected to the inferior grounding switch 1 through the interlocking mechanism. When performing switch operations, the superior load switch 2 and the inferior grounding switch 1 are opened / closed in a set order under the action of the interlocking mechanism.

[0037] It can be understood that an interlock is achieved between the superior load switch 2 and the inferior grounding switch 1 through the interlocking mechanism. Exemplarily: when the superior load switch 2 is in the closed state, the grounding switch in the inferior load switch (referred to as the inferior grounding switch 1) cannot be closed. When the inferior grounding switch 1 is in the closed position, the superior load switch cannot be closed. In this way, the two switches are opened or closed in a set order, thus effectively avoiding short-circuit faults or fires caused by human operation errors and greatly improving safety.

[0038] Specifically, the interlocking mechanism includes an upper interlocking device and a lower interlocking device. The upper interlocking device is installed on the superior load switch 2, and the lower interlocking device is installed on the inferior grounding switch 1. The upper interlocking device and the lower interlocking device cooperate with each other. It can be understood that when the superior load switch 2 is in the closed state, at this time the lower interlocking device is adapted to lock the inferior grounding switch 1, and the inferior grounding switch 1 is in the open state. When the inferior grounding switch 1 is in the closed state, at this time the upper interlocking device is adapted to lock the superior load switch 2, and the superior load switch 2 is in the open state.

[0039] As a further description of the above embodiment: as Figure 2 , Figure 8 and Figure 11 shown, the upper interlocking device includes an upper lock body 4 and an upper limit module 6, and the lower interlocking device includes a lower lock body 3 and a lower limit module 5. The upper lock body 4 and the upper limit module 6 are both installed on the superior load switch 2 and cooperate with each other, and the lower lock body 3 and the lower limit module 5 are both installed on the inferior grounding switch 1 and cooperate with each other. The upper lock body 4 and the lower lock body 3 are one-out-of-two lock bodies, and they share a common key 11 (of course, this is also well-known to those skilled in the art). Specifically, as shown in (a) of Figure 7 , when the upper lock body 4 or the lower lock body 3 is in the closed state, the key 11 cannot be pulled out; as shown in (b) of Figure 7 , when the upper lock body 4 or the lower lock body 3 is in the open state, the key 11 can be freely inserted and pulled out.

[0040] It can be understood that when the upper lock body 4 is in the open state, the upper limit module 6 can lock the upper load switch 2, and at this time the upper load switch 2 is in the open state; when the lower lock body 3 is in the open state, the lower limit module 5 can lock the lower earthing switch 1, and at this time the lower earthing switch 1 is in the open state. That is to say, as long as the key 11 can be freely inserted and removed from the lock body of a certain switch, that switch will be in the open state. Since the two lock bodies share one key 11, in any case, it can be ensured that at least one of them is in the open state, that is, the situation where the switches of the upper and lower levels are interlocked and closed at the same time will not occur, further ensuring the safety of the staff and the line.

[0041] In one embodiment of the present application, as Figures 2 to 4 shown, an opening / closing indicating board 7 is installed on the main shaft body 101 of the lower earthing switch 1. Specifically: the opening / closing indicating board 7 is connected to the main shaft of the load switch mechanism, and the main shaft of the mechanism is connected to the main shaft of the earthing switch. A lower operation port 8 is provided on the side of the lower earthing switch 1; specifically: the lower operation port 8 is a manual operation port. Insert the operation handle into the lower operation port 8, and the opening and closing operations of the lower earthing switch 1 can be realized by rotating the operation handle. The lower limit module 5 includes a lower interlocking plate 501 and a guiding structure 502. The lower interlocking plate 501 is installed on the lock tongue 10 of the lower lock body 3, and the lower interlocking plate 501 is connected to the opening / closing indicating board 7 through the guiding structure 502.

[0042] Specifically, assume that the lower earthing switch 1 is in the open state at this time, as Figure 3 shown, and the lower lock body 3 is in the closed state and the key 11 is located on the lower lock body 3. At this time, to remove the key 11, the key 11 needs to be turned to make the lower lock body 3 in the open state. During the turning process of the key 11, the lock tongue 10 will drive the lower interlocking plate 501 to move, as Figure 4 shown, the lower interlocking plate 501 will block the lower operation port 8, that is, the operation handle cannot be inserted into the lower operation port 8. And the lower interlocking plate 501 can also lock the opening / closing indicating board 7 through the guiding structure 502. Since the opening / closing indicating board 7 is connected to the main shaft body 101 of the lower earthing switch 1, it can also be understood as locking the main shaft body 101. After removing the key 11, at this time the lower earthing switch 1 will maintain this open state and cannot be operated, and then the key 11 can be inserted into the upper load switch 2 for operation.

[0043] The present application does not specifically limit the structure of the guiding structure 502. The following provides a specific embodiment for reference: As Figure 5 and Figure 6As shown, the guiding structure 502 includes a mutually cooperating guiding rod 5022 and a guiding groove 5021. The guiding rod 5022 is installed on the opening / closing indicating board 7, and the guiding groove 5021 is arranged on the lower interlocking board 501. The guiding groove 5021 includes an arc-shaped groove 50211 and a horizontal linear groove 50212 that are connected and communicate with each other.

[0044] It can be understood that, as Figure 2 and Figure 3 shown, when the lower lock body 3 is in the closed state (i.e., the key 11 cannot be pulled out), the guiding rod 5022 cooperates with the arc-shaped groove 50211, that is, at this time, the lower grounding switch 1 can be switched on or off; during the switching-on and -off process, the guiding rod 5022 rotates along the arc-shaped groove 50211. When the lower lock body 3 is opened to pull out the key 11, the lower grounding switch 1 must be in the switched-off state; the reason is: as Figure 2 shown, at this time, the lower grounding switch 1 is in the switched-on state, and the guiding rod 5022 on the opening / closing indicating board 7 is located at the rightmost end of the arc-shaped groove 50211, that is, the guiding rod 5022 blocks and interferes with the leftward movement of the lower interlocking board 501. As Figure 3 shown, when the lower grounding switch 1 is switched off, at this time, the opening / closing indicating board 7 rotates, thereby driving the guiding rod 5022 to move to the leftmost end of the arc-shaped groove 50211, and at this time, the guiding rod 5022 corresponds to the linear groove 50212, and the linear groove 50212 provides a clearance space for the guiding rod 5022, that is, at this time, the lower interlocking board 501 can move leftward under the action of the lock tongue 10, so that the key 11 in the lower grounding switch 1 is in the switched-off state after being pulled out.

[0045] It should be noted that after the lower lock body 3 is opened, the lower interlocking board 501 can not only block the lower operation port 8 so that the lower grounding switch 1 cannot be operated, but also lock the opening / closing indicating board 7. As Figure 4 shown, after the lower interlocking board 501 moves leftward, at this time, the guiding rod 5022 cooperates with the linear groove 50212, and the guiding rod 5022 is in a misaligned state with the arc-shaped groove 50211, which will interfere with the rotation of the opening / closing indicating board 7, thereby realizing the locking of the opening / closing indicating board 7; through the dual limiting effect, it can stably ensure that the lower grounding switch 1 is in the switched-off state after the key 11 is pulled out.

[0046] As Figure 7As shown in the figure, screw holes are provided on the side of the closing and opening indicator board 7, and bolts 9 are installed in the screw holes to form a guide rod 5022. That is, the connection method of the bolt 9 and the screw hole is simple and reliable, which is convenient for later installation and maintenance. The closing and opening indicator board 7 includes an arc-shaped plate 701 and an indicator 702. The indicator 702 is arranged on the side of the arc-shaped plate 701, and the indicator 702 is connected to the main spindle 101 of the lower grounding switch 1. When the main spindle 101 rotates, the indicator 702 moves accordingly, so that the closing and opening states of the lower grounding switch 1 can be visually displayed. Such a design not only improves the operation convenience, but also enables the staff to quickly and accurately judge the switch state, further enhancing the safety and reliability of the system.

[0047] In one embodiment of the present application, as Figures 9 to 17 shown, an upper operation port 13 is provided on the side of the upper load switch 2. The upper limit module 6 includes an upper interlocking plate 601, a first baffle 602, and a second baffle 603. The upper interlocking plate 601 is elastically and vertically slidably installed on the side of the upper load switch 2 (through a return spring 12). The first baffle 602 is installed at one end of the locking tongue 10 of the upper lock body 4 and cooperates with the upper interlocking plate 601 through a limit component 15. The second baffle 603 is installed on the toggle arm 201 of the upper load switch 2.

[0048] It can be understood that, as Figure 11 shown, when the upper lock body 4 is in the open state (that is, the key 11 can be freely inserted and removed), the upper interlocking plate 601 can block the upper operation port 13 (the dotted part in the figure is the upper operation port 13), and the first baffle 602 can lock the upper interlocking plate 601 through the limit component 15. At this time, the upper load switch 2 is in the open state and cannot be operated. That is to say, after the key 11 in the upper lock body 4 is pulled out, the upper load switch 2 is in the open state, and the open state is locked through the limit component 15, so that the upper load switch 2 cannot be operated at this time, which can prevent the misoperation of the staff.

[0049] As Figure 12 shown, when the upper lock body 4 is in the closed state (that is, the key 11 cannot be pulled out), the first baffle 602 releases the lock on the upper interlocking plate 601 through the limit component 15. Subsequently, the staff can move the upper interlocking plate 601 downward to expose the upper operation port 13 and perform a closing operation. At this time, the upper interlocking plate 601 can lock the first baffle 602 through the limit component 15 to keep the upper lock body 4 in the closed state, that is, the key 11 cannot be turned to make the upper lock body 4 change from the closed state to the open state.

[0050] It should be noted that, as Figure 13As shown in the figure, a circular groove 17 corresponding to the upper operation port 13 is provided on the side of the upper interlocking plate 601. Under the action of elastic force, the circular groove 17 and the upper operation port 13 are in a misaligned state, that is, the upper interlocking plate 601 blocks the upper operation port 13. When operation is required (of course, at this time the upper interlocking plate 601 has been unlocked), the staff only needs to slide the upper interlocking plate 601 downward to the extreme position, and then the circular groove 17 and the upper operation port 13 are just in a corresponding state (as Figure 15 shown), and finally insert the operation handle into the upper operation port 13 to perform the opening and closing operation.

[0051] As Figure 17 shown, when the upper load switch 2 is in the closed state, the second baffle 603 can limit the locking tongue 10 (the other end) of the upper lock body 4 under the action of the crank arm 201, so that the upper lock body 4 remains in the closed state, that is, the key 11 cannot be turned to make the upper lock body 4 change from closed to open. That is to say, only when the upper load switch 2 is tripped, at this time the second baffle 603 will separate from the other end of the locking tongue 10 driven by the crank arm 201, and then the key 11 can be pulled out from the upper lock body 4 after being opened; in this way, the function that the lower grounding switch 1 cannot be closed unless the upper load switch 2 is tripped can be ensured.

[0052] The structure of the limiting component 15 of this application is not specifically limited. The following provides a specific embodiment for reference: As Figure 13 shown, the limiting component 15 includes a limiting groove 1501 and a limiting block 1502. The limiting groove 1501 is horizontally arranged on the first baffle 602; the limiting block 1502 is horizontally arranged on the upper interlocking plate 601. Specifically, the limiting block 1502 is formed by bending the flange at the top of the upper interlocking plate 601.

[0053] It can be understood that, as Figure 11 and Figure 13 shown, when the upper lock body 4 is in the open state, the limiting groove 1501 cooperates with the limiting block 1502 to realize the locking of the upper interlocking plate 601 in the vertical direction, that is, the upper interlocking plate 601 cannot slide downward. When the upper lock body 4 is in the closed state, at this time the limiting groove 1501 on the first baffle 602 will move horizontally under the drive of the locking tongue 10 and be misaligned and separated from the limiting block 1502, so as to release the locking of the upper interlocking plate 601, that is, the upper interlocking plate 601 can slide downward under the drive of an external force.

[0054] It should be noted that when the upper interlocking plate 601 has not been reset during downward movement, the upper lock body 4 cannot be switched from the closed state to the open state at this time. This is also because: at this time, the limiting block 1502 and the side portion of the first baffle 602 are in abutting cooperation, that is, the limiting block 1502 interferes with the leftward movement of the upper interlocking plate 601. Therefore, only after the upper interlocking plate 601 moves upward under the action of the return spring 12 and the limiting block 1502 and the limiting groove 1501 are correspondingly matched, can the first baffle 602 move leftward.

[0055] It should be known that when the upper load switch 2 is switched off, it can not only be switched off manually, but also be switched off automatically. Of course, this is also common knowledge known to those skilled in the art. The above mechanical lock structures are all used for limiting and locking the manual switching off. Therefore, locking the automatic switching off of the upper load switch 2 is also an urgent problem to be solved.

[0056] Therefore, in order to solve the above technical problems, in this embodiment, as Figure 11 , Figure 12 , Figure 15 and Figure 16 shown, a travel switch 19 is provided on the side of the upper load switch 2. It can be understood that, as Figure 11 shown, when the upper lock body 4 is in the open state, the first baffle 602 abuts against the travel switch 19, so that the electric closing circuit electrically connected to the travel switch 19 is in an open circuit state. In this way, the locking of the electric closing can be achieved, so that this mechanical lock can achieve double locking of the manual and electric closing of the upper load switch 2, greatly improving the safety. Similarly, vice versa, as Figure 15 and Figure 16 shown, when the upper lock body 4 is in the closed state, at this time the first baffle 602 will be in a separated state from the travel switch 19, that is, at this time the first baffle 602 loses the cooperation with the travel switch 19, so that the electric closing circuit in the upper load switch 2 can be normally energized and work, that is, the upper load switch 2 can perform an electric closing operation.

[0057] Furthermore, the switching-off operation of the upper load switch 2 is performed through the switching-off knob 14 on its side; and the switching-off knob 14 can be cooperated with the upper interlocking plate 601 through the limiting structure 16. It can be understood that when the upper load switch 2 is in the switched-off state, at this time the upper interlocking plate 601 can lock the switching-off knob 14 through the limiting structure 16.

[0058] Specifically, as Figure 14As shown, the original opening knob 14 was of a cylindrical structure. Now it is designed that both sides of the opening knob 14 are provided with flat openings 18; and the limiting structure 16 includes a card slot 1601, and the card slot 1601 is arranged at the side position of the upper interlocking plate 601. Specifically, the card slot 1601 includes a circular slot at the upper part and a rectangular slot at the lower part. It can be understood that as Figure 11 shown, when the upper interlocking plate 601 is locked, at this time, the flat opening 18 of the opening knob 14 is engaged with the rectangular slot, so as to realize the limiting and locking of the opening knob 14, and at this time, the upper operation port 13 will also be blocked by the upper interlocking plate 601. And when the upper interlocking plate 601 is unlocked and moved down to the limit position, as Figure 15 shown, at this time, the opening knob 14 is correspondingly engaged with the circular slot, that is, the opening knob 14 can rotate freely at this time, so as to realize electric opening; of course, at this time, the upper operation port 13 also corresponds to the circular slot 17, so that manual opening operation can also be carried out.

[0059] The main function of the present invention: to realize the interlock between the upper and lower switches, and the interlock principle is as follows: when the upper load switch 2 is in the closed state, the lower earthing switch 1 cannot be closed. When the lower earthing switch 1 is in the closed position (state), the upper load switch 2 cannot be manually or electrically closed.

[0060] In the lower earthing switch 1: ① As Figure 2 shown, the lower earthing switch 1 is in the closed state. At this time, the lower interlocking plate 501 is blocked by the guide rod 5022 (i.e., the bolt 9) on the opening and closing indicating plate 7, the mechanical lock cannot be opened, the lower interlocking plate 501 cannot move leftward, and the key 11 on the "two-in-one mechanical lock" cannot be pulled out. ② As Figure 3 shown, insert the operating handle into the lower operation port 8, and rotate the operating handle counterclockwise to open the lower earthing switch 1. At the same time, the bolt 9 in the opening and closing indicating plate 7 also moves to the left end position of the linear slot 50212. ③ As Figure 4 shown, rotate the key 11 on the lower lock body 3 to make the lower lock body 3 in the open state. At this time, the key 11 on the "two-in-one mechanical lock" can be pulled out. At the same time, the lower interlocking plate 501 blocks the lower operation port 8, and at this time, the earthing operating mechanism cannot be operated.

[0061] In the upper load switch 2: ① As Figure 11 shown, it is the mechanism state when the upper load switch 2 is in the open state. At this time, the baffle plate 602 and the upper interlocking plate 601 are in the buckled state, that is, the upper operation port 13 is blocked by the upper interlocking plate 601 and cannot be manually operated. At the same time, the baffle plate 602 triggers the travel switch 19 to disconnect the electric closing circuit, and the electric operation is also impossible. ② As Figure 12As shown, insert the key 11 pulled out from the "two-out-of-one mechanical lock" (i.e., the lower lock body 3) on the lower grounding switch 1 into the "two-out-of-one mechanical lock" (i.e., the upper lock body 4) of the upper load switch 2, and turn the mechanical lock to the closed state. The first baffle 602 moves to the right along with the mechanical lock. At this time, the first baffle 602 is disengaged from the upper interlocking plate 601, and the travel switch 19 is in the untriggered state and can be electrically operated. Pull down the upper interlocking plate 601 to expose the manual upper operation port 13. After inserting the operation handle, manual operation can be performed. ③ As Figure 15 shown, operate the upper load switch 2 to the closed position; then pull out the operation handle. At this time, the upper interlocking plate 601 moves upward under the action of the return spring 12 (as Figure 16 shown). After the upper load switch 2 is closed, the crank arm 201 rotates to the position as shown in Figure 17 , thus blocking the lock tongue 10 (also known as the lock rod) of the upper lock body 4, making it impossible to turn the mechanical lock to the open position, and realizing the function that the upper load switch 2 cannot be opened and the lower grounding switch 1 cannot be closed.

[0062] The above describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements will occur to the present application, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A superior-inferior interlocking system for new energy power generation, characterized in that, Comprising: An upper load switch, a lower earthing switch, an upper interlocking device and a lower interlocking device. The upper interlocking device is installed on the upper load switch, the lower interlocking device is installed on the lower earthing switch, and the upper interlocking device and the lower interlocking device cooperate with each other; When the upper load switch is in the closed state, at this time the lower interlocking device is adapted to lock the lower earthing switch, and the lower earthing switch is in the open state; When the lower earthing switch is in the closed state, at this time the upper interlocking device is adapted to lock the upper load switch, and the upper load switch is in the open state.

2. The upper and lower level interlocking system for new energy power generation according to claim 1, wherein: The upper interlocking device includes an upper lock body and an upper limit module, and the lower interlocking device includes a lower lock body and a lower limit module; both the upper lock body and the upper limit module are installed on the upper load switch and cooperate with each other, and both the lower lock body and the lower limit module are installed on the lower earthing switch and cooperate with each other; the upper lock body and the lower lock body are alternative lock bodies and share a common key; when the upper lock body or the lower lock body is in the closed state, the key cannot be pulled out; when the upper lock body or the lower lock body is in the open state, the key is adapted to be freely inserted and pulled out; When the upper lock body is in the open state, the upper limit module is adapted to lock the upper load switch, and at this time the upper load switch is in the open state; when the lower lock body is in the open state, the lower limit module is adapted to lock the lower earthing switch, and at this time the lower earthing switch is in the open state.

3. The superior-subordinate interlocking system for new energy power generation according to claim 2, characterized in that: An opening and closing indicating board is installed on the main shaft of the lower earthing switch, and a lower operation opening is arranged on the side of the lower earthing switch; the lower limit module includes a lower interlocking board and a guiding structure, the lower interlocking board is installed on the locking tongue of the lower lock body, and the lower interlocking board and the opening and closing indicating board are cooperatively connected through the guiding structure; When the lower lock body is in the open state, the lower interlocking board is adapted to block the lower operation opening, and the lower interlocking board is adapted to lock the opening and closing indicating board through the guiding structure. At this time, the lower earthing switch is in the open state and cannot be operated.

4. The up-and-down level interlocking system for new energy power generation according to claim 3, characterized in that: The guiding structure includes a guiding rod and a guiding groove that cooperate with each other. The guiding rod is installed on the opening and closing indicating board, and the guiding groove is arranged on the lower interlocking board; the guiding groove includes an arc groove and a straight groove in a horizontal state that are communicated with each other; When the lower lock body is in the closed state, the guiding rod cooperates with the arc groove. At this time, the lower earthing switch is adapted to be opened or closed; when the lower lock body is in the open state, the guiding rod cooperates with the straight groove and is misaligned with the arc groove to lock the opening and closing indicating board.

5. The upper and lower level interlocking system for new energy power generation according to claim 2, wherein: An upper operation opening is arranged on the side of the upper load switch. The upper limit module includes an upper interlocking board, a first baffle and a second baffle. The upper interlocking board is elastically and vertically slidably installed on the side of the upper load switch. The first baffle is installed on the locking tongue of the upper lock body and cooperates with the upper interlocking board through a limiting component. The second baffle is installed on the toggle arm in the upper load switch; When the upper lock body is in the open state, the upper interlocking plate is adapted to block the upper operation port, and the first baffle is adapted to lock the upper interlocking plate through the limiting component. At this time, the upper load switch is in the open state and cannot be operated; When the upper lock body is in the closed state, the first baffle is adapted to release the lock on the upper interlocking plate through the limiting component. Subsequently, the upper interlocking plate is adapted to move downward to expose the upper operation port for closing operation; At this time, the upper interlocking plate is adapted to lock the first baffle through the limiting component to keep the upper lock body in the closed state; When the upper load switch is in the closed state, the second baffle is adapted to limit the locking tongue of the upper lock body under the action of the crank arm to keep the upper lock body in the closed state.

6. The upper and lower level interlocking system for new energy power generation according to claim 5, characterized in that: The limiting component includes a limiting groove and a limiting block. The limiting groove is horizontally arranged on the first baffle, and the limiting block is horizontally arranged on the upper interlocking plate; When the upper lock body is in the open state, the limiting groove cooperates with the limiting block to realize the locking of the upper interlocking plate in the vertical direction; when the upper lock body is in the closed state, the limiting groove is adapted to separate from the limiting block under the drive of the first baffle to release the lock on the upper interlocking plate; when the upper interlocking plate moves downward, the limiting block cooperates with the side of the first baffle to realize the locking of the first baffle.

7. The upper and lower level interlocking system for new energy power generation according to claim 6, characterized in that: A travel switch is arranged on the side of the upper load switch; when the upper lock body is in the open state, the first baffle cooperates with the travel switch to make the electric closing circuit connected to the travel switch in an open state.

8. The upper and lower level interlocking system for new energy power generation according to claim 7, wherein: A tripping knob is arranged on the side of the upper load switch, and the tripping knob is cooperated with the upper interlocking plate through a limiting structure; when the upper load switch is in the open state, the upper interlocking plate is adapted to lock the tripping knob through the limiting structure.

9. The upper and lower level interlocking system for new energy power generation according to claim 8, characterized in that: Both sides of the tripping knob are flat openings, and the limiting structure includes a clamping groove arranged on the side of the upper interlocking plate; the flat openings of the tripping knob are clamped and matched with the clamping groove to realize the locking of the tripping knob.

10. The upper and lower level interlocking system for new energy power generation according to claim 4, characterized in that: A screw hole is arranged on the side of the switching indicator board, and a bolt is installed in the screw hole to form the guide rod.

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