Interlocking device of switch cabinet and switch cabinet

Abstract

The utility model belongs to the technical field of electrical equipment, and discloses an interlocking device of a switch cabinet and the switch cabinet. The interlocking device comprises a first interlocking piece, a first elastic piece and a second interlocking piece, and the first interlocking piece is located between the circuit breaker operating piece and the second interlocking piece; two ends of the first elastic piece are respectively connected to the cabinet door and the first interlocking piece; when the circuit breaker operating member is in the closing position, the first elastic member has a first length, and the second interlocking member covers the isolating switch operating hole and cannot move due to the backstop of the first interlocking member. When the circuit breaker operating member is in the opening position, the first elastic member has a second length smaller than the first length, and the second interlocking member is in the position where the isolating switch operating hole is covered or not covered, so that the isolating switch can be opened and closed, and the second interlocking member can cover the isolating switch operating hole when not in operation. Whether the circuit breaker is switched on or switched off, the isolating switch operation hole can be covered by the second interlocking plate, and the safety and cleanliness in the cabinet are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment technical field especially relates to a switch cabinet's interlock device and switch cabinet. BACKGROUND

[0002] The electrical components are provided with operating mechanisms, and the corresponding electrical components can be switched on and off through the respective operating mechanisms. When the electrical components of the switch cabinet are operated, the requirement of "electrical five prevention" (preventing misoperation of the circuit breaker, preventing the isolation switch from being switched on and off with load, preventing the live line from being connected to the ground, preventing the circuit breaker from being switched on with the ground, and preventing misoperation of the live interval) needs to be met to ensure safe and reliable operation of the switch cabinet.

[0003] To meet the requirement of "preventing the isolation switch from being switched on and off with load" in the five prevention, an interlock device is usually arranged between the circuit breaker and the isolation switch to ensure that the isolation switch cannot be operated when the circuit breaker is switched on. The existing interlock device usually includes an interlock assembly. When the circuit breaker operating shaft is rotated from the off position to the on position, the circuit breaker operating shaft pushes the interlock assembly to block the isolation switch operating hole between the isolation switch operating shaft and the door, thereby preventing the isolation switch operating shaft from being operated when the circuit breaker is switched on. When the circuit breaker operating shaft is switched to the off position, the interlock assembly is manually lifted to remove the blockage of the isolation switch operating shaft.

[0004] The existing interlock device has the following defects: on the one hand, when the circuit breaker operating shaft is in the off position, the circuit breaker operating shaft is easily misoperated to switch the circuit breaker unexpectedly, which is difficult to ensure the safety of the on position; on the other hand, the existing interlock assembly cannot ensure the safety and cleanliness of the electrical components in the door.

[0005] Therefore, there is an urgent need for a switch cabinet interlock device and switch cabinet to solve the above problems in the prior art. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a switch cabinet interlock device and switch cabinet, which can prevent the circuit breaker operating shaft from being misoperated to switch the position when the circuit breaker operating shaft is in the off position, and the interlock device can block the isolation switch operating hole to prevent foreign matter from entering and improve the safety and cleanliness of the switch cabinet.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] In a first aspect, an interlock device for a switch cabinet is provided, the switch cabinet including a door and a circuit breaker, the door being provided with an isolation switch operating hole, and the circuit breaker including a circuit breaker operating member.

[0009] The interlocking device comprises a first interlocking piece, a first elastic piece and a second interlocking piece;

[0010] The first interlocking piece is located between the circuit breaker operating piece and the second interlocking piece; a first end of the first elastic piece is connected to the cabinet door, and a second end of the first elastic piece is connected to the first interlocking piece; the first interlocking piece is in abutment with the circuit breaker operating piece under the elastic force of the first elastic piece;

[0011] When the circuit breaker operating piece is in a closed position, the first elastic piece has a first length, and the second interlocking piece covers the disconnecting switch operating hole; the first interlocking piece is stopped by the second interlocking piece;

[0012] When the circuit breaker operating piece is in an open position, the first elastic piece has a second length, and the second interlocking piece covers the disconnecting switch operating hole or is in a avoiding position, the avoiding position is a position where the second interlocking piece does not cover the disconnecting switch operating hole;

[0013] The first length is greater than the second length.

[0014] As an optional scheme of the interlocking device of the switch cabinet provided by the utility model, the interlocking device further comprises a fixing plate, the fixing plate is located on a side of the second interlocking piece away from the disconnecting switch operating hole, and the fixing plate is connected with the cabinet door;

[0015] One of the fixing plate and the second interlocking piece is provided with a limiting structure, and the other is provided with a positioning hole, and the limiting structure and the positioning hole are separably clamped.

[0016] As an optional scheme of the interlocking device of the switch cabinet provided by the utility model, the interlocking device further comprises a second elastic piece, a first end of the second elastic piece is connected to the second interlocking piece, and a second end of the second elastic piece is connected to the fixing plate;

[0017] When the second interlocking piece is in the avoiding position, the second elastic piece tightens the second interlocking piece and the fixing plate, and has a third length;

[0018] When the second interlocking piece covers the disconnecting switch operating hole, the second elastic piece has a fourth length;

[0019] The third length is greater than the fourth length.

[0020] As an optional scheme of the interlocking device of the switch cabinet provided by the utility model,

[0021] The first hooking hole is arranged on one side of the first hooking plate.

[0022] The second hooking hole is arranged on one side of the second hooking plate.

[0023] The first end of the second elastic member is hooked on the first hooking hole, and the second end of the second elastic member is hooked on the second hooking hole.

[0024] As an optional scheme of the interlocking device of the switch cabinet, the second interlocking member is provided with a guide member on both sides, the guide member is located between the fixed plate and the cabinet door, and is connected with the fixed plate and the cabinet door, the guide member is provided with a track groove, and the second interlocking member is slidably clamped in the track groove.

[0025] As an optional scheme of the interlocking device of the switch cabinet, the limiting structure comprises a mounting member, a third elastic member and a ball.

[0026] The mounting member is connected to the fixed plate, the mounting member is provided with a mounting groove, the ball is located in the mounting groove, and the third elastic member is telescopically abutted between the bottom wall of the mounting groove and the ball; the ball is separably clamped with the positioning hole.

[0027] As an optional scheme of the interlocking device of the switch cabinet, the first interlocking member comprises a first pressing plate and a guide plate connected at an included angle.

[0028] The first pressing plate is abutted to the circuit breaker operating member.

[0029] The circuit breaker further comprises a circuit breaker frame connected with the cabinet door, a strip-shaped guide hole and a fixed column are arranged on the guide plate, a guide column is arranged on the circuit breaker frame, the guide column is slidably matched with the strip-shaped guide hole, the first end of the first elastic member is hooked on the guide column, and the second end of the first elastic member is hooked on the fixed column.

[0030] As an optional scheme of the interlocking device of the switch cabinet, the first interlocking member further comprises a second pressing plate, and the second pressing plate is connected to one end of the guide plate away from the first pressing plate.

[0031] The second interlocking member comprises a baffle and a third pressing plate connected at an included angle.

[0032] The baffle is used for covering the isolating switch operating hole.

[0033] The third pressing plate is arranged at an angle with the second pressing plate and is detachably abutted with the second pressing plate.

[0034] As an optional scheme of the interlocking device of the switch cabinet, the interlocking device further comprises an operation handle and a limiting sleeve; the cabinet door is provided with a strip-shaped sliding hole and two limiting holes respectively communicated with two ends of the strip-shaped sliding hole;

[0035] The operation handle is slidably arranged in the strip-shaped sliding hole, a first end of the operation handle is provided with an anti-rotation part, and a second end of the operation handle is provided with a first lock hole; the second interlocking part is provided with an anti-rotation hole, the anti-rotation part is clamped with the anti-rotation hole, and the cross section of the anti-rotation part and the cross section of the anti-rotation hole are both non-circular;

[0036] The limiting sleeve is rotatably arranged on the operation handle, a first end of the limiting sleeve is provided with a strip-shaped limiting part, and a side wall of a second end of the limiting sleeve is provided with a second lock hole;

[0037] When the second interlocking part covers the disconnector operation hole or is in the avoiding position, the strip-shaped limiting part is rotatably arranged in the two limiting holes respectively; the strip-shaped limiting part has a first position and a second position relative to the operation handle;

[0038] When the strip-shaped limiting part is in the first position, the size of the strip-shaped limiting part along the width direction of the strip-shaped sliding hole is greater than the width size of the strip-shaped sliding hole, and the second lock hole is communicated with the first lock hole;

[0039] When the strip-shaped limiting part is in the second position, the size of the strip-shaped limiting part along the width direction of the strip-shaped sliding hole is smaller than the width size of the strip-shaped sliding hole, and the second lock hole is not communicated with the first lock hole.

[0040] In a second aspect, a switch cabinet is provided, comprising a cabinet door, a circuit breaker and the interlocking device of the switch cabinet as described above, the circuit breaker comprises a circuit breaker operation part, and the cabinet door is provided with a disconnector operation hole.

[0041] The utility model discloses the beneficial effects of:

[0042] The utility model provides a kind of interlocking device of switch cabinet and the switch cabinet using the interlocking device, because circuit breaker operating element is in the closing position, second interlocking piece covers isolating switch operating hole, and first interlocking piece stops at second interlocking piece, therefore second interlocking piece cannot move, further cannot be operated by isolating switch in the switch cabinet through isolating switch operating hole Closing and opening, that is, when circuit breaker switches to closing state, because isolating switch operating hole is covered and cannot be operated by isolating switch, can realize the requirement of " prevent carrying load to separate, combine isolating switch" in five defenses.

[0043] In addition, because circuit breaker operating element is in the closing position, first elastic member has first length, circuit breaker operating element is in the opening position, first elastic member has second length, first length is greater than second length, so when circuit breaker operating element moves to closing position, second elastic member is stretched from second length to first length, and the driving force when circuit breaker operating element moves to closing position can be increased by overcoming the tension of first elastic member in the process, to prevent circuit breaker from being misoperated and switched to closing position when being in opening position, improve closing safety. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiments of the utility model will be briefly introduced below, and obviously, the drawings described below are only some embodiments of the utility model, and other drawings can be obtained according to the drawings without creative labor for those skilled in the art.

[0045] Figure 1 It is the first view of the switch cabinet provided by the specific embodiment of the utility model;

[0046] Figure 2 It is the second view of the switch cabinet provided by the specific embodiment of the utility model;

[0047] Figure 3 It is the first structure schematic view of the interlocking device of the switch cabinet provided by the specific embodiment of the utility model;

[0048] Figure 4 It is the schematic view when circuit breaker operating element of the interlocking device is in opening state provided by the specific embodiment of the utility model;

[0049] Figure 5 is a schematic view of the interlocking device when the second interlocking piece is in the avoiding position according to the embodiment of the present application;

[0050] Figure 6 is a process diagram of the interlocking device when the circuit breaker operating piece rotates to the closing position according to the embodiment of the present application;

[0051] Figure 7 is a schematic view of the interlocking device when the second interlocking piece is in the shielding position according to the embodiment of the present application;

[0052] Figure 8 is a plan view of the interlocking device according to the embodiment of the present application;

[0053] Figure 9 is an exploded schematic view of the second interlocking piece and the fixed plate of the interlocking device according to the embodiment of the present application;

[0054] Figure 10 is a sectional view of the interlocking device according to the embodiment of the present application;

[0055] Figure 11 is a partial enlarged view of A in Figure 10

[0056] Figure 12 is a second structure schematic view of the interlocking device of the switch cabinet according to the embodiment of the present application;

[0057] Figure 13 is a partial enlarged view of B in Figure 12

[0058] Figure 14 is a sectional view of the handle assembly according to the embodiment of the present application;

[0059] Figure 15 is an isometric view of the handle assembly according to the embodiment of the present application;

[0060] Figure 16 is an exploded schematic view of the handle assembly according to the embodiment of the present application;

[0061] Figure 17 is a side view of the handle assembly according to the embodiment of the present application;

[0062] Figure 18 is a structure schematic view of the isolating switch operating panel on the cabinet door according to the embodiment of the present application.

[0063] In the figure:

[0064] ​​100, cabinet door; 200, circuit breaker; 300, disconnector; 310, disconnector operating shaft; 400, shield lock;

[0065] 110, disconnector operating panel; 120, disconnector operating hole; 130, first indication hole; 140, grounding switch operating panel; 150, grounding switch operating hole; 160, second indication hole;

[0066] 1310, limiting hole; 1320, strip-shaped sliding hole;

[0067] 1, circuit breaker operating piece; 2, first interlocking piece; 3, first elastic piece; 4, second interlocking piece; 5, fixed plate; 6, limiting structure; 7, second elastic piece; 8, guide piece; 9, handle assembly; 10, fastener; 20, second locking nut; 30, circuit breaker frame; 40, guide column;

[0068] 11, operating main shaft; 12, crank arm;

[0069] 121, pushing camber surface;

[0070] 21, first pressing plate; 22, guide plate; 23, second pressing plate; 24, reinforcing plate;

[0071] 221, strip-shaped guide hole; 222, fixed column;

[0072] 41, baffle; 42, third pressing plate; 43, first hooking plate;

[0073] 411, positioning hole; 412, first avoiding hole; 413, anti-rotation hole; 431, first hooking hole;

[0074] 51, second hooking plate; 52, mounting hole; 53, notch; 54, second avoiding hole;

[0075] 511, second hooking hole;

[0076] 61, mounting piece; 62, third elastic piece; 63, ball; 64, first locking nut;

[0077] 611, mounting groove; 612, stop flange;

[0078] 80, track groove; 81, first track plate; 82, second track plate;

[0079] 91, operating handle; 92, limiting sleeve; 93, locking piece;

[0080] 911, anti-rotation part; 912, stepped sleeve setting part; 913, stop part; 914, first recess; 915, first lock hole;

[0081] 921, stepped hole; 922, strip-shaped limiting part; 923, second groove; 924, second lock hole. DETAILED DESCRIPTION

[0082] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the utility model and not limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0083] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0084] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0085] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0086] In the embodiment, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in the utility model generally represents that the front and rear associated objects have an "or" relationship.

[0087] In the embodiments of the utility model, same reference signs represent same components, and for the sake of brevity, detailed description of same components is omitted in different embodiments.

[0088] As shown in Figure 1 and Figure 2 , it is the structure schematic view of switch cabinet provided by the embodiment. The switch cabinet includes cabinet body with opening and cabinet door 100 covering the opening of cabinet body, and the cabinet body and cabinet door 100 surround the installation space, and the circuit breaker 200, disconnecting switch 300 and interlocking device are installed in the installation space.

[0089] Referring to Figure 2 , disconnecting switch operation panel 110 is arranged on the cabinet door 100, disconnecting switch operation hole 120 is arranged on the disconnecting switch operation panel 110, and the tool for driving the disconnecting switch 300 to switch on-off state is inserted into the disconnecting switch operation hole 120. Specifically, referring to Figure 1 and Figure 4 , the disconnecting switch 300 in the switch cabinet has disconnecting switch operation shaft 310, and the disconnecting switch 300 can be driven to switch on-off state by rotating the disconnecting switch operation shaft 310. When operating, the tool for driving the disconnecting switch 300 to switch on-off state is inserted into the disconnecting switch operation hole 120 and connected with the disconnecting switch operation shaft 310, and then the rotating operation can be carried out, and the on-off state of the disconnecting switch 300 is switched.

[0090] The circuit breaker 200 is connected with the interlocking device, and the interlocking device can cover the disconnecting switch operation hole 120. The interlocking device provided by the embodiment can realize the requirement of "preventing disconnecting switch from being switched on-off with load" in five prevention, that is, when the circuit breaker 200 is in the on state, the on-off operation of the disconnecting switch 300 is not allowed.

[0091] Referring to Figure 1 , Figure 2 and Figure 3 , the circuit breaker 200 includes circuit breaker operating member 1 and circuit breaker frame 30, the circuit breaker frame 30 is fixedly connected with the cabinet body and / or cabinet door 100, the circuit breaker operating member 1 is rotationally connected with the circuit breaker frame 30 and has on position and off position, and when the circuit breaker operating member 1 is rotated from the off position to the on position, the circuit breaker is switched from the off state to the on state. More specifically, the operating handle of the circuit breaker operating mechanism is arranged outside the cabinet door 100 of the switch cabinet, the operating handle is in transmission connection with the circuit breaker operating member 1, the circuit breaker operating member 1 can be rotated by the operating handle, and the on-off state switching of the circuit breaker 200 is realized.

[0092] Specifically, Figure 1 the schematic view of the interlocking device provided by the embodiment in the switch cabinet is shown, as Figure 3As shown, a structural schematic diagram of the interlocking device provided by the embodiment is shown. The interlocking device provided by the embodiment includes a first interlocking piece 2, a first elastic piece 3, and a second interlocking piece 4.

[0093] The first interlocking piece 2 is located between the circuit breaker operating piece 1 and the second interlocking piece 4; the first end of the first elastic piece 3 is connected to the cabinet door 100, and the second end of the first elastic piece 3 is connected to the first interlocking piece 2; the first interlocking piece 2 is abutted to the circuit breaker operating piece 1 under the elastic force of the first elastic piece 3. When the circuit breaker operating piece 1 is in the closing position, the first elastic piece 3 is in the stretched state and has a first length, and the second interlocking piece 4 covers the disconnecting switch operating hole 120; the first interlocking piece 2 is stopped by the second interlocking piece 4. When the circuit breaker operating piece 1 is in the opening position, the first elastic piece 3 is in the stretched state and has a second length, and the second interlocking piece 4 covers the disconnecting switch operating hole 120 or is in a avoiding position, wherein the avoiding position is a position where the second interlocking piece 4 does not cover the disconnecting switch operating hole 120; the first length is greater than the second length.

[0094] It can be understood that when the second interlocking piece 4 covers the disconnecting switch operating hole 120, the tool cannot pass through the disconnecting switch operating hole 120 to operate the disconnecting switch operating shaft 310 to achieve the opening and closing of the disconnecting switch 300. When the second interlocking piece 4 does not cover the disconnecting switch operating hole 120, the tool can pass through the disconnecting switch operating hole 120 to operate the disconnecting switch 300.

[0095] The interlocking device of the switch cabinet provided by the embodiment can achieve the requirement of "preventing the disconnecting switch from being opened and closed with load" in the five-prevention when the circuit breaker operating piece 1 is rotated from the opening position to the closing position and the circuit breaker 200 is switched from the opening state to the closing state. Because the second interlocking piece 4 covers the disconnecting switch operating hole 120 when the circuit breaker operating piece 1 is in the closing position, and the first interlocking piece 2 is stopped by the second interlocking piece 4, the second interlocking piece 4 cannot be moved, and thus cannot operate the disconnecting switch 300 in the switch cabinet through the disconnecting switch operating hole 120. That is, when the circuit breaker 200 is switched to the closing state, the disconnecting switch operating hole 120 is blocked and cannot be operated, thus achieving the requirement of "preventing the disconnecting switch from being opened and closed with load" in the five-prevention. When the circuit breaker operating piece 1 is in the opening position, the second interlocking piece 4 can cover the disconnecting switch operating hole 120 or be in the avoiding position where the disconnecting switch operating hole 120 is not covered, so that the disconnecting switch 300 can be operated when the circuit breaker 200 is opened, and the second interlocking piece 4 can be in the state of covering the disconnecting switch operating hole 120 when not operated, that is, no matter whether the circuit breaker 200 is closed or opened, the disconnecting switch operating hole 120 can be covered, thus improving the safety and cleanliness inside the cabinet.

[0096] In addition, since the first elastic member 3 has a first length when the circuit breaker operating member 1 is in the closed position and has a second length when the circuit breaker operating member 1 is in the open position, the first elastic member 3 is stretched from the second length to the first length when the circuit breaker operating member 1 moves to the closed position, and the driving force for moving the circuit breaker operating member 1 to the closed position is increased, the circuit breaker 200 is prevented from being switched to the closed position by mistake when the circuit breaker 200 is in the open position, and the safety of closing is improved.

[0097] With reference to the accompanying drawings Figure 3 , the first interlocking member 2 is moved by the pushing of the circuit breaker operating member 1 and has a locked position and an unlocked position, and the second interlocking member 4 is movable relative to the cabinet door 100 to be in a position covering or not covering the isolating switch operating hole 120. When the circuit breaker operating member 1 is in the open position, the first interlocking member 2 is in the unlocked position and abuts against the circuit breaker operating member 1 under the elastic force of the first elastic member 3, and when the circuit breaker operating member 1 is rotated to the closed position, the first interlocking member 2 is in the locked position and abuts against the circuit breaker operating member 1 under the elastic force of the first elastic member 3, and the second interlocking member 4 is in the position covering the isolating switch operating hole 120. When the first interlocking member 2 is in the locked position, the second interlocking member 4 is prevented from moving to the position avoiding the isolating switch operating hole 120.

[0098] More specifically, when the circuit breaker operating member 1 is rotated from the open position to the closed position, the first interlocking member 2 is pushed from the unlocked position to the locked position, and the first elastic member 3 is stretched to store elastic potential energy. When the first interlocking member 2 is in the locked position, the second interlocking member 4 is prevented from moving to the position avoiding the isolating switch operating hole 120, and when the first interlocking member 2 is in the unlocked position, the second interlocking member 4 is allowed to move reciprocally between the position covering the isolating switch operating hole 120 and the position avoiding the isolating switch operating hole 120.

[0099] When the circuit breaker operating member 1 is rotated from the closed position to the open position to switch the circuit breaker 200 to the open state, the first interlocking member 2 is moved from the locked position to the unlocked position under the elastic force of the first elastic member 3, and at this time, the second interlocking member 4 can move between the position covering the isolating switch operating hole 120 and the position avoiding the isolating switch operating hole 120, and the isolating switch 300 can be operated to open and close. Through the force of the first elastic member 3, the first interlocking member 2 always abuts against the circuit breaker operating member 1, and when the circuit breaker operating member 1 is in the open position, the first interlocking member 2 can remain in the unlocked position without the action of external force, so that the second interlocking member 4 can be switched between the position covering the isolating switch operating hole 120 and the position avoiding the isolating switch operating hole 120, and the operation of opening and closing the isolating switch 300 is not affected.

[0100] In some optional embodiments, the first interlocking piece 2 is arranged below the circuit breaker operating piece 1, and the second interlocking piece 4 is arranged below the first interlocking piece 2. Both the first interlocking piece 2 and the second interlocking piece 4 can move up and down. The first interlocking piece 2 can be pushed down to the locking position by the circuit breaker operating piece 1, and can push the second interlocking piece 4 during the process of moving down. When the first interlocking piece 2 moves down to the locking position, the second interlocking piece 4 is blocked from moving up to the avoiding position.

[0101] Optionally, the second interlocking piece 4 is provided with a first avoiding hole 412. When the second interlocking piece 4 moves to the avoiding position, the first avoiding hole 412 is opposite to the isolating switch operating hole 120 on the cabinet door 100, as shown in Figure 4 and Figure 5 At this time, the isolating switch operating shaft 310 in the cabinet can be observed through the isolating switch operating hole 120, and the isolating switch operating shaft 310 can be operated by using a tool to pass through the isolating switch operating hole 120, so as to realize the switching of the isolating switch 300. When the second interlocking piece 4 moves to the shielding position, the first avoiding hole 412 is staggered with the isolating switch operating hole 120 on the cabinet door 100, as shown in Figure 6 At this time, the second interlocking piece 4 is between the shielding position and the avoiding position, and has not completely shielded the isolating switch operating hole 120, as shown in Figure 7 When the second interlocking piece 4 moves to the shielding position, the second interlocking piece 4 completely covers the isolating switch operating hole 120, and the isolating switch 300 cannot be operated, and dust and sundries cannot enter the switch cabinet, so as to ensure the cleanliness of the cabinet and the operation safety of the components in the cabinet.

[0102] In the embodiments of the present application, the first interlocking piece 2 can be kept in abutment with the circuit breaker operating piece 1 under the elastic force of the first elastic piece 3. The abutment can prevent the circuit breaker operating piece 1 from being misoperated to rotate and switch positions to a certain extent.

[0103] For example, the first elastic piece 3 is a spring.

[0104] In the embodiments of the present application, as shown in Figure 3 and Figure 8 The circuit breaker operating piece 1 includes an operating main shaft 11 and a crank arm 12. The operating main shaft 11 is rotatably connected to the circuit breaker frame 30, and the crank arm 12 is fixedly connected to the operating main shaft 11, for example, the crank arm 12 is welded on the operating main shaft 11. By driving the operating main shaft 11 to rotate, the crank arm 12 can be synchronously rotated. The crank arm 12 is provided with a pushing arc surface 121, the pushing arc surface 121 is in abutment with the first interlocking piece 2, and the center of the pushing arc surface 121 (O2) is on the center axis (O1) of the operating main shaft 11. Figure 8 Figure 8 ​The O1) are arranged at intervals, and do not coincide, so that during rotation of the operating spindle 11 about its own axis O1, the abutting cam surface 121 can achieve abutting movement of the first interlocking piece 2.

[0105] Moreover, since the toggle arm 12 is always in abutment with the first interlocking piece 2 through the abutting cam surface 121, when the first interlocking piece 2 moves to the locked position, the first interlocking piece 2 and the toggle arm 12 can jointly block movement of the second interlocking piece 4 to the avoiding position, improving the reliability of the disconnector 300 opening and closing limiting.

[0106] As shown in FIG. 1, Figure 4 At this time, the operating spindle 11 and the toggle arm 12 are in the opening position, the first interlocking piece 2 is in the unlocked position, and the second interlocking piece 4 can be switched between the shielding position and the avoiding position at will. Figure 6 As shown in FIG. 2, At this time, the operating spindle 11 and the toggle arm 12 are rotated to the closing position, the first interlocking piece 2 moves to the locked position under the abutting action of the toggle arm 12, preventing the second interlocking piece 4 from moving to the avoiding position, so that the second interlocking piece 4 can be kept in the shielding position.

[0107] As shown in FIG. 1, Figure 3 and Figure 9 The interlocking device further comprises a fixed plate 5, which is located on the side of the second interlocking piece 4 away from the disconnector operating hole 120, and the fixed plate 5 is connected with the cabinet door 100. The second interlocking piece 4 moves between the inner wall of the cabinet door 100 and the fixed plate 5, which can improve the moving precision and stability. One of the fixed plate 5 and the second interlocking piece 4 is provided with a limiting structure 6, and the other is provided with a positioning hole 411. When the second interlocking piece 4 is in the shielding position or the avoiding position, the limiting structure 6 and the positioning hole 411 are separably engaged, so that the second interlocking piece 4 can be stably stopped in the shielding position and the avoiding position, and will not move at will.

[0108] Exemplarily, the fixed plate 5 is provided with the above-mentioned limiting structure 6, and the second interlocking piece 4 is provided with at least two upper and lower positioning holes 411. When the second interlocking piece 4 moves upward to the avoiding position, the limiting structure 6 on the fixed plate 5 is clamped in the lower positioning hole 411, so that the second interlocking piece 4 is stably kept in the avoiding position. When the second interlocking piece 4 moves downward from the avoiding position to the shielding position, the limiting structure 6 is separated from the lower positioning hole 411, and is clamped with the upper positioning hole 411 when the second interlocking piece 4 reaches the shielding position, so that the second interlocking piece 4 is stably kept in the shielding position.

[0109] Further, referring to Figure 3The interlocking device further comprises a second elastic member 7, a first end of the second elastic member 7 is connected to the second interlocking member 4, and the other end of the second elastic member 7 is connected to the fixed plate 5. When the second interlocking member 4 is in the avoiding position, the second elastic member 7 is in a stretched state, it pulls the second interlocking member 4 and the fixed plate 5 tightly, and has a third length; when the second interlocking member 4 covers the operating hole 120 of the isolating switch, the second elastic member 7 has a fourth length; wherein the third length is greater than the fourth length. When the second interlocking member 4 moves from the shielding position to the avoiding position, the second elastic member 7 is stretched, until the limiting structure 6 on the fixed plate 5 is clamped in the corresponding positioning hole 411 of the second interlocking member 4, and the second interlocking member 4 is in the avoiding position, the second elastic member 7 is in a stretched and energy-stored state. When the second interlocking member 4 is in the avoiding position, if the circuit breaker operating member 1 rotates from the opening position to the closing position, it pushes the second interlocking member 4 through the first interlocking member 2, so that the limiting structure 6 is separated from the positioning hole 411, at this time, the limiting structure 6 and the positioning hole 411 are clamped to release the restriction, the second elastic member 7 releases the elastic potential energy, so that the second interlocking member 4 moves to the shielding position under the elastic force of the second elastic member 7, until the limiting structure 6 on the fixed plate 5 is clamped with the positioning hole 411 above the second interlocking member 4, at this time, the second interlocking member 4 is stopped in the shielding position due to the clamping restriction of the limiting structure 6 and the positioning hole 411, and cannot move randomly.

[0110] By setting the second elastic member 7, the second interlocking member 4 can automatically reset to the shielding position covering the operating hole 120 of the isolating switch without being affected by any external force, so it can effectively prevent dust and sundries from entering the switch cabinet, effectively ensuring the safety and cleanliness of the cabinet.

[0111] Exemplarily, the second elastic member 7 is a spring.

[0112] As shown in Figure 10 and Figure 11 , in some embodiments, the limiting structure 6 comprises a mounting member 61, a third elastic member 62 and a ball 63. The mounting member 61 is connected to the fixed plate 5, and the mounting member 61 is provided with a mounting groove 611, the groove of the mounting groove 611 faces the second interlocking member 4. The ball 63 is located in the mounting groove 611, and the ball 63 cooperates with the groove wall of the mounting groove 611 and will not fall out of the mounting groove 611; the third elastic member 62 is telescopically abutted between the bottom wall of the mounting groove 611 and the ball 63. The ball 63 is used to be clamped into the positioning hole 411 under the elastic force of the third elastic member 62, realizing the clamping of the limiting structure 6 and the positioning hole 411, so as to position the second interlocking member 4 in the shielding position or the avoiding position. When the second interlocking member 4 moves up and down under the action of external force, the ball 63 can be separated from the positioning hole 411, at this time, the ball 63 compresses the third elastic member 62, and the second interlocking member 4 moves in rolling cooperation with the ball 63, which can reduce the friction between the ball 63 and the second interlocking member 4.

[0113] Specifically, the mounting member 61 is fixed on the fixed plate 5. As shown in Figure 11 , the outer wall of the mounting member 61 is provided with an external thread structure, and the first end of the mounting member 61 is provided with a stop flange 612. In combination Figure 9 , the fixed plate 5 is provided with a mounting hole 52, the mounting member 61 passes through the mounting hole 52 and abuts against the fixed plate 5 through the stop flange 612, and the second end of the mounting member 61 passing through the mounting hole 52 is threadedly connected with the first locking nut 64, so that the mounting member 61 is fixed on the fixed plate 5.

[0114] Exemplarily, the third elastic member 62 is a spring.

[0115] As shown in Figure 12 and Figure 13 , the interlocking device further comprises a guide member 8. The guide member 8 is arranged on both sides of the second interlocking member 4, and is located between the fixed plate 5 and the cabinet door 100 and connected with the fixed plate 5 and the cabinet door 100. The guide member 8 is provided with a track groove 80, and the second interlocking member 4 is slidably clamped in the track groove 80. When the second interlocking member 4 moves between the shielding position and the avoiding position, the two side edges thereof are in sliding fit with the corresponding track grooves 80, effectively improving the moving accuracy and stability of the second interlocking member 4, preventing the second interlocking member 4 from being deviated during movement, and avoiding large shaking of the second interlocking member 4.

[0116] Specifically, referring to Figure 9 and Figure 13 , the guide member 8 comprises a first track plate 81 and a second track plate 82 arranged in layers, the first track plate 81 abuts against the inner wall of the cabinet door 100, and the second track plate 82 abuts against the fixed plate 5, and one end of the second track plate 82 is cantilevered relative to one end of the first track plate 81 to form the above-mentioned track groove 80 therebetween, which is simple in structure and easy to implement.

[0117] Further, the fixation of the guide member 8 is realized by the fastener 10 and the second locking nut 20. Exemplarily, the fastener 10 is a bolt, the shank thereof passes through the side wall of the cabinet door 100, the first track plate 81, the second track plate 82 and the fixed plate 5 in sequence, and is threadedly connected with the second locking nut 20, and the first track plate 81, the second track plate 82 and the fixed plate 5 are synchronously fixed on the inner wall of the cabinet door 100 by tightening the second locking nut 20. Alternatively, the first track plate 81, the second track plate 82, the fixed plate 5 and the inner wall of the cabinet door 100 can also be welded.

[0118] As shown in Figure 3 and Figure 4As shown, the first interlocking piece 2 comprises a first pressing plate 21 and a guide plate 22 connected at an angle. The guide plate 22 extends along the moving direction of the first interlocking piece 2, and the first pressing plate 21 is in abutment with the crank arm 12 of the circuit breaker operating piece 1 under the elastic force of the first elastic piece 3.

[0119] The guide plate 22 is provided with a strip-shaped guide hole 221 and a fixing column 222, and the circuit breaker frame 30 is provided with a guide column 40 which is arranged in the strip-shaped guide hole 221 and is in slidable cooperation with the strip-shaped guide hole 221 along the moving direction of the first interlocking piece 2 (as shown in Figure 6 and Figure 8 In the embodiment, since the first interlocking piece 2 moves vertically, the strip-shaped guide hole 221 extends vertically, and when the first interlocking piece 2 moves, the guide column 40 is in slidable cooperation with the strip-shaped guide hole 221, which guides the movement of the first interlocking piece 2 and prevents the first interlocking piece 2 from moving out of position. That is, the circuit breaker frame 30 with the guide column 40 can serve as a moving track of the first interlocking piece 2. The first end of the first elastic piece 3 is hooked on the guide column 40, and the second end of the first elastic piece 3 is hooked on the fixing column 222 on the guide plate 22, thereby achieving stable installation of the first elastic piece 3.

[0120] For example, the guide column 40 is a screw which is screwed on the circuit breaker frame 30, which not only can achieve slidable cooperation with the strip-shaped guide hole 221, but also can prevent the guide column 40 from being separated from the strip-shaped guide hole 221. Further, the strip-shaped guide hole 221 can be provided with one, two or more than two, and each strip-shaped guide hole 221 is provided with a guide column 40.

[0121] Specifically, the first pressing plate 21 is bent and connected to the upper end of the guide plate 22. Optionally, the first pressing plate 21 is a horizontal plate which is perpendicular to the vertical direction, so that it has a large enough contact surface to contact the crank arm 12 of the circuit breaker operating piece 1, which can reduce the assembly fault rate and ensure that the crank arm 12 and the first pressing plate 21 are in stable contact.

[0122] As shown in Figure 3 and Figure 4 The first interlocking piece 2 further comprises a second pressing plate 23 which is connected to the end of the guide plate 22 away from the first pressing plate 21 (i.e. the lower end of the guide plate 22). The second interlocking piece 4 comprises a baffle 41 and a third pressing plate 42 which are connected at an angle. The baffle 41 is used to cover the isolating switch operating hole 120 and is provided with the first avoiding hole 412 and the positioning hole 411 described above. The third pressing plate 42 is arranged at an angle with the second pressing plate 23 and is in separable abutment with the second pressing plate 23. When the second pressing plate 23 moves to the locking position under the pushing of the circuit breaker operating piece 1, the third pressing plate 42 can drive the baffle 41 to move to the shielding position under the pushing of the second pressing plate 23, so as to cover the isolating switch operating hole 120.

[0123] Since the second pressing plate 23 and the third pressing plate 42 are arranged at an angle, when the second pressing plate 23 pushes the third pressing plate 42, the two cross each other, which can improve the assembly fault tolerance of the interlocking device and improve the reliability during use. Even if the second pressing plate 23 and the third pressing plate 42 are relatively displaced, the second pressing plate 23 can contact the third pressing plate 42 when it moves down, without affecting the pushing effect of the second pressing plate 23 on the third pressing plate 42.

[0124] As shown in Figure 3 , the first interlocking piece 2 further comprises a reinforcing plate 24 connected between the guide plate 22 and the second pressing plate 23, which can improve the overall strength of the first interlocking piece 2 and reduce deformation. The reinforcing plate 24 exemplarily comprises three plate segments connected in sequence by bending, which are connected in a Z shape. One plate segment at the end is connected with the guide plate 22, and the second pressing plate 23 is bent and connected to the middle plate segment, effectively improving the anti-deformation capability of the entire first interlocking piece 2.

[0125] Alternatively, the first interlocking piece 2 is integrally bent and formed, that is, a whole plate is formed by cutting, bending, stamping and other processes, to ensure high strength.

[0126] As shown in Figure 3 and Figure 9 , the second interlocking piece 4 facing one side of the fixed plate 5 is provided with a first hooking plate 43, specifically, the first hooking plate 43 is bent and connected to the baffle 41, and the first hooking plate 43 is provided with a first hooking hole 431. The side of the fixed plate 5 away from the second interlocking piece 4 is provided with a second hooking plate 51, and the second hooking plate 51 is provided with a second hooking hole 511. The first end of the second elastic piece 7 is hooked and connected to the first hooking hole 431 of the first hooking plate 43, and the second end is hooked and connected to the second hooking hole 511 of the second hooking plate 51, to realize the stable connection of the second elastic piece 7 between the fixed plate 5 and the second interlocking piece 4. Specifically, the second hooking plate 51 is formed by bending on the fixed plate 5.

[0127] Alternatively, the second interlocking piece 4 is integrally bent and formed, that is, a whole plate is formed by cutting, bending, stamping and other processes, to ensure high strength.

[0128] As shown in Figure 5 and Figure 7 , the fixed plate 5 is provided with a notch 53, and a second avoiding hole 54 is recessed at the bottom wall of the notch 53, which is arranged opposite to the isolation switch operating hole 120. When the second interlocking piece 4 moves to the avoiding position, referring to Figure 5The disconnector operation hole 120, the first avoiding hole 412 and the second avoiding hole 54 are aligned to enable the tool to operate the disconnector operation shaft 310. When the second interlocking piece 4 moves to the shielding position, it shields between the disconnector operation hole 120 and the second avoiding hole 54, and the operation of the disconnector operation shaft 310 is not allowed. By opening the notch 53 and the second avoiding hole 54 on the fixed plate 5, the material usage can be reduced and the material cost can be lowered without shielding the disconnector operation hole 120.

[0129] As shown in Figure 4 and Figure 6 , the first indicating hole 130 is arranged on the disconnector operation panel 110, and the interlocking device further comprises a handle assembly 9 which passes through the first indicating hole 130 and is fixedly connected with the second interlocking piece 4. The handle assembly 9 can drive the second interlocking piece 4 to move between the shielding position and the avoiding position, and the handle assembly 9 slides along the first indicating hole 130 during the movement. When the handle assembly 9 slides to the uppermost end of the first indicating hole 130, it drives the second interlocking piece 4 to reach the avoiding position, and when the handle assembly 9 slides to the lowermost end of the first indicating hole 130, it drives the second interlocking piece 4 to reach the shielding position.

[0130] Specifically, referring to Figure 6 and Figure 18 , the first indicating hole 130 comprises a strip-shaped sliding hole 1320 and two limiting holes 1310 which are separately arranged at both ends of the strip-shaped sliding hole 1320 and are in communication with the strip-shaped sliding hole 1320. As shown in Figure 14 , Figure 15 and Figure 16 , the handle assembly 9 comprises an operating handle 91 and a limiting sleeve 92 which is sleeved on the operating handle 91. The operating handle 91 is slidably arranged in the strip-shaped sliding hole 1320 and is fixedly connected with the second interlocking piece 4, and it can reciprocally slide along the strip-shaped sliding hole 1320 between the two limiting holes 1310. The operating handle 91 drives the second interlocking piece 4 to move between the shielding position and the avoiding position when it slides between the two limiting holes 1310. Specifically, the strip-shaped sliding hole 1320 vertically extends, and the two limiting holes 1310 are vertically spaced. When the operating handle 91 and the limiting sleeve 92 are in the lower limiting hole 1310, the second interlocking piece 4 is in the shielding position, and when the operating handle 91 and the limiting sleeve 92 slide along the strip-shaped sliding hole 1320 to the upper limiting hole 1310, the second interlocking piece 4 is in the avoiding position.

[0131] The limiting sleeve 92 can limit the handle assembly 9 in the two limiting holes 1310, so that the second interlocking piece 4 is stably kept in the shielding position or the avoiding position. Specifically, the limiting sleeve 92 is rotatably sleeved on the operating handle 91, referring to Figure 15 and Figure 16The first end of the limiting sleeve 92 is provided with a strip-shaped limiting part 922, the limiting sleeve 92 can be limited in the two limiting holes 1310 through the strip-shaped limiting part 922, and can be separated from the limiting hole 1310 after rotating relative to the operation handle 91. When the second interlocking part 4 is in the shielding position or the avoiding position, the strip-shaped limiting part 922 is rotatably arranged in the two limiting holes 1310 respectively; the strip-shaped limiting part 922 has a first position and a second position relative to the operation handle 91.

[0132] When the strip-shaped limiting part 922 is in the first position, the size of the strip-shaped limiting part 922 along the width direction of the strip-shaped sliding hole 1320 is greater than the width size of the strip-shaped sliding hole 1320. At this time, the strip-shaped limiting part 922 is blocked by the inner wall of the limiting hole 1310 and cannot enter the strip-shaped sliding hole 1320, so that the second interlocking part 4 can be stably limited in the shielding position or the avoiding position.

[0133] When the strip-shaped limiting part 922 is in the second position, the size of the strip-shaped limiting part 922 along the width direction of the strip-shaped sliding hole 1320 is less than the width size of the strip-shaped sliding hole 1320. At this time, the strip-shaped limiting part 922 can enter the strip-shaped sliding hole 1320 from the limiting hole 1310, so that the strip-shaped limiting part 922 slides along the strip-shaped sliding hole 1320 until it reaches the other limiting hole 1310.

[0134] As shown in Figure 17 and Figure 18 , the length size L1 of the strip-shaped limiting part 922 is greater than the width size L3 of the strip-shaped sliding hole 1320, and the width size L2 of the strip-shaped limiting part 922 is less than the width size L3 of the strip-shaped sliding hole 1320. Therefore, when the strip-shaped limiting part 922 is rotated to the first position in the limiting hole 1310, the length direction thereof is parallel to the width direction of the strip-shaped sliding hole 1320, and since the length size of the strip-shaped limiting part 922 is large, it cannot enter the strip-shaped sliding hole 1320 with small width size, so that it can be clamped and limited in the corresponding limiting hole 1310 and cannot move into the strip-shaped sliding hole 1320, thereby stably keeping the second interlocking part 4 in the shielding position or the avoiding position. When the strip-shaped limiting part 922 is rotated by 90 degrees in the limiting hole 1310 to reach the second position, the width direction thereof is parallel to the width direction of the strip-shaped sliding hole 1320, and since the width size L2 of the strip-shaped limiting part 922 is less than the width size L3 of the strip-shaped sliding hole 1320, it can enter the strip-shaped sliding hole 1320 and slide along the strip-shaped sliding hole 1320 to the other limiting hole 1310.

[0135] In the embodiment, referring to Figure 18 , the two limiting holes 1310 are circular holes, and the diameter size L4 is greater than the maximum size L1 of the strip-shaped limiting part 922, so that the strip-shaped limiting part 922 can enter the limiting hole 1310 and rotate in the limiting hole 1310 to switch positions.

[0136] As shown in Figure 14 and Figure 16 , the first end of the operation handle 91 is provided with an anti-rotation part 911, and the second end of the operation handle 91 is provided with a first lock hole 915. The baffle 41 of the second interlocking piece 4 is provided with an anti-rotation hole 413, the anti-rotation part 911 is clamped with the anti-rotation hole 413, and the cross section of the anti-rotation part 911 and the cross section of the anti-rotation hole 413 are both non-circular, so that the operation handle 91 cannot rotate relative to the second interlocking piece 4, and the operation handle 91 is prevented from rotating when the limiting sleeve 92 rotates. The sidewall of the second end of the limiting sleeve 92 is provided with a second lock hole 924. The second lock hole 924 is in communication with the first lock hole 915 when the strip-shaped limiting part 922 is in the first position, as shown in Figure 14 and Figure 15 , when the first lock hole 915 and the second lock hole 924 are in communication, the protective lock 400 can be hung in the first lock hole 915 and the second lock hole 924 to lock the limiting sleeve 92, at this time the limiting sleeve 92 cannot rotate relative to the operation handle 91, the strip-shaped limiting part 922 cannot be switched when it is in the first position, and the entire handle assembly 9 cannot enter the strip-shaped sliding inner part from the limiting hole 1310, but can only be limited in the limiting hole 1310, and the handle assembly 9 cannot be operated at will, thereby improving the use safety of the switch cabinet. When the handle assembly 9 needs to be operated, the protective lock 400 needs to be removed first, and then the limiting sleeve 92 is rotated to switch the strip-shaped limiting part 922 to the second position, so that the handle assembly 9 can be lifted and moved upward. The second lock hole 924 is not in communication with the first lock hole 915 when the strip-shaped limiting part 922 is in the second position, and the protective lock 400 does not need to be hung. When the handle assembly 9 moves into the limiting hole 1310, the handle assembly 9 can be limited in the limiting hole 1310 and cannot move by rotating the limiting sleeve 92, thereby simplifying the operation difficulty while ensuring safety.

[0137] In this embodiment, the clamping of the anti-rotation part 911 and the anti-rotation hole 413 with non-circular cross sections can avoid the rotation of the operation handle 91 under external force, that is, the operation handle 91 will not rotate when the limiting sleeve 92 rotates, and the second lock hole 924 can be aligned with the first lock hole 915 to realize the hanging of the protective lock 400 when the limiting sleeve 92 rotates to the first position.

[0138] Referring to Figure 14 , the anti-rotation part 911 is clamped in the anti-rotation hole 413 and fixedly connected with the second interlocking piece 4 through the locking piece 93. The locking piece 93 is exemplarily a screw, the screw rod part of which is screwed on the operation handle 91, and the stop head part thereof stops on the side of the second interlocking piece 4 away from the isolation switch operation hole 120.

[0139] As shown in Figure 14 and Figure 16As shown, the operation handle 91 comprises a connected stop portion 913 and a stepped sleeving portion 912, the anti-rotation portion 911 is connected to one end of the stepped sleeving portion 912 away from the stop portion 913, the diameter of the stop portion 913 is greater than the maximum diameter of the stepped sleeving portion 912, and the two sides of the anti-rotation portion 911 are provided with first grooves 914. In the embodiment, the first grooves 914 are formed on the two sides of the end of the operation handle 91 to form the strip-shaped anti-rotation portion 911 between the two first grooves 914.

[0140] The inner hole of the limiting sleeve 92 is a stepped hole 921, the limiting sleeve 92 is located between the stop portion 913 and the second interlocking piece 4 after being installed in place, and the limiting sleeve 92 is embedded with the stepped sleeving portion 912 of the operation handle 91 through the stepped hole 921 to block the movement of the limiting sleeve 92 relative to the operation handle 91 in the axial direction. Exemplarily, a second groove 923 is formed on the two sides of the outer wall of the limiting sleeve 92 to form the strip-shaped limiting portion 922 between the two second grooves 923.

[0141] In the embodiment, a grounding switch is further arranged in the switch cabinet, and a grounding switch operation panel 140 is further arranged on the cabinet door 100, and the grounding switch operation panel 140 is provided with a grounding switch operation hole 150 and a second indication hole 160. The tool for driving the grounding switch to open and close can pass through the grounding switch operation hole 150 to enter the switch cabinet to perform the opening and closing operation on the grounding switch. The second indication hole 160 has the same structure as the first indication hole 130, and is used for penetrating the lifting mechanism which can drive the moving plate in the switch cabinet to move so that the moving plate is in the position of covering or not covering the grounding switch operation hole 150. The specific structure of the lifting mechanism is consistent with the structure of the above-mentioned handle assembly 9, and the structure of the moving plate is similar to the structure of the above-mentioned second interlocking piece 4, which will not be described here.

[0142] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An interlocking device of a switchgear, characterized by, The switch cabinet comprises a cabinet door (100) provided with an isolating switch operating hole (120) and a circuit breaker (200) comprising a circuit breaker operating piece (1); The interlocking device comprises a first interlocking piece (2), a first elastic piece (3) and a second interlocking piece (4); The first interlocking piece (2) is located between the circuit breaker operating piece (1) and the second interlocking piece (4); a first end of the first elastic piece (3) is connected to the cabinet door (100), and a second end of the first elastic piece (3) is connected to the first interlocking piece (2); the first interlocking piece (2) abuts against the circuit breaker operating piece (1) under the elastic force of the first elastic piece (3); When the circuit breaker operating piece (1) is in a closing position, the first elastic piece (3) has a first length, and the second interlocking piece (4) covers the isolating switch operating hole (120); the first interlocking piece (2) is stopped by the second interlocking piece (4); When the circuit breaker operating piece (1) is in an opening position, the first elastic piece (3) has a second length, and the second interlocking piece (4) covers the isolating switch operating hole (120) or is in a avoiding position, i.e., a position where the second interlocking piece (4) does not cover the isolating switch operating hole (120); wherein the first length is greater than the second length.

2. The interlocking device of the switchgear according to claim 1, characterized in that, The interlocking device further comprises a fixed plate (5) located on a side of the second interlocking piece (4) away from the isolating switch operating hole (120), and the fixed plate (5) is connected to the cabinet door (100); One of the fixed plate (5) and the second interlocking piece (4) is provided with a limiting structure (6), and the other is provided with a positioning hole (411); the limiting structure (6) and the positioning hole (411) are detachably clamped.

3. The interlocking device of the switchgear according to claim 2, characterized in that, The interlocking device further comprises a second elastic piece (7), a first end of the second elastic piece (7) is connected to the second interlocking piece (4), and a second end of the second elastic piece (7) is connected to the fixed plate (5); When the second interlocking piece (4) is in the avoiding position, the second elastic piece (7) is taut between the second interlocking piece (4) and the fixed plate (5) and has a third length; When the second interlocking piece (4) covers the isolating switch operating hole (120), the second elastic piece (7) has a fourth length; Wherein, the third length is greater than the fourth length.

4. The interlocking device of the switch cabinet according to claim 3, wherein A first hooking plate (43) is arranged on a side of the second interlocking piece (4) facing the fixed plate (5), and the first hooking plate (43) is provided with a first hooking hole (431); A second hooking plate (51) is arranged on a side of the fixed plate (5) away from the second interlocking piece (4), and the second hooking plate (51) is provided with a second hooking hole (511); The first end of the second elastic member (7) is hooked to the first hooking hole (431), and the second end of the second elastic member (7) is hooked to the second hooking hole (511).

5. The interlocking device of the switchgear according to claim 2, characterized in that, The second interlocking member (4) is provided with a guide member (8) on both sides, which is located between the fixed plate (5) and the cabinet door (100) and connected with the fixed plate (5) and the cabinet door (100), and the guide member (8) is provided with a track groove (80), and the second interlocking member (4) is slidably clamped in the track groove (80).

6. The interlocking device of the switchgear cabinet according to claim 2, characterized in that, The limiting structure (6) comprises a mounting member (61), a third elastic member (62) and a ball (63); The mounting member (61) is connected to the fixed plate (5), and the mounting member (61) is provided with a mounting groove (611), and the ball (63) is located in the mounting groove (611), and the third elastic member (62) is telescopically abutted between the bottom wall of the mounting groove (611) and the ball (63); the ball (63) is detachably clamped with the positioning hole (411).

7. The interlocking device of the switchgear according to claim 1, characterized in that, The first interlocking member (2) comprises a first pressing plate (21) and a guide plate (22) connected at an angle; The first pressing plate (21) abuts against the circuit breaker operating member (1); The circuit breaker (200) further comprises a circuit breaker frame (30) connected with the cabinet door (100), the guide plate (22) is provided with a strip-shaped guide hole (221) and a fixed column (222), the circuit breaker frame (30) is provided with a guide column (40), the guide column (40) is slidably matched with the strip-shaped guide hole (221), the first end of the first elastic member (3) is hooked to the guide column (40), and the second end of the first elastic member (3) is hooked to the fixed column (222).

8. The interlocking device of the switchgear according to claim 7, characterized in that, The first interlocking member (2) further comprises a second pressing plate (23), which is connected to one end of the guide plate (22) away from the first pressing plate (21); The second interlocking member (4) comprises a baffle (41) and a third pressing plate (42) connected at an angle; The baffle (41) is used for covering the isolating switch operating hole (120); The third pressing plate (42) is arranged at an angle with the second pressing plate (23) and detachably abuts against the second pressing plate (23).

9. An interlocking device for switchgear according to any of claims 1-8, characterized in that, The interlocking device further comprises an operating handle (91) and a limiting sleeve (92); the cabinet door (100) is provided with a strip-shaped sliding hole (1320) and two limiting holes (1310) respectively communicating with both ends of the strip-shaped sliding hole (1320). The operation handle (91) is slidably arranged in the strip-shaped sliding hole (1320), a first end of the operation handle (91) is provided with an anti-rotation part (911), and a second end of the operation handle (91) is provided with a first locking hole (915); the second interlocking part (4) is provided with an anti-rotation hole (413), the anti-rotation part (911) is clamped with the anti-rotation hole (413), and the anti-rotation part (911) and the anti-rotation hole (413) are both non-circular in cross section; The limiting sleeve (92) is rotatably sleeved on the operation handle (91), a first end of the limiting sleeve (92) is provided with a strip-shaped limiting part (922), and a side wall of a second end of the limiting sleeve (92) is provided with a second locking hole (924); When the second interlocking part (4) covers the isolating switch operation hole (120) or is in the avoiding position, the strip-shaped limiting part (922) is rotatably arranged in two limiting holes (1310) respectively; the strip-shaped limiting part (922) has a first position and a second position relative to the operation handle (91); When the strip-shaped limiting part (922) is in the first position, a size of the strip-shaped limiting part (922) along a width direction of the strip-shaped sliding hole (1320) is greater than a width size of the strip-shaped sliding hole (1320), and the second locking hole (924) is in communication with the first locking hole (915); When the strip-shaped limiting part (922) is in the second position, the size of the strip-shaped limiting part (922) along the width direction of the strip-shaped sliding hole (1320) is less than the width size of the strip-shaped sliding hole (1320), and the second locking hole (924) is not in communication with the first locking hole (915).

10. Switchgear cabinet, characterized in that The interlocking device of the switch cabinet comprises a cabinet door (100), a circuit breaker (200) and the interlocking device of the switch cabinet according to any one of claims 1-9, the circuit breaker (200) comprises a circuit breaker operating part (1), and the cabinet door (100) is provided with an isolating switch operation hole (120).

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