Disconnector and cabinet door interlocking device

Abstract

The invention discloses an interlocking device for isolating switch and cabinet door, comprising a switch cabinet, an isolating switch, an operating rod, a bidirectional flexible shaft, and a first and a second locking member, wherein the operating rod is rotatably installed on the inner wall of the cabinet body in a manner that one end is inserted into the cabinet body and the other end is extended outside the cabinet body, and one end of the operating rod is transmission-connected with the operating handle of the isolating switch through the bidirectional flexible shaft; the first locking member is arranged on the inner side of the cabinet door, and the second locking member is rotatably arranged on the inner wall of the cabinet body, and the second locking member can rotate under the driving of the operating rod; when the other end of the operating rod moves upward, the operating rod drives the isolating switch to be in a closed state, and drives the second locking member to resist and lock the first locking member; when the other end of the operating rod moves downward, the operating rod drives the isolating switch to be in an open state, and drives the second locking member to unlock the first locking member. The interlocking device has the characteristics of simple structure, saving installation space, safe and reliable use, meeting NFPA20 specifications, etc., and is easy to implement.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical switch protection devices, and particularly to an isolating switch and cabinet door interlocking device. Background Art

[0002] As is well known, in a main circuit system composed of an isolating switch, a vacuum contactor, a high-voltage capacitor, etc., it is necessary to interlock the switch cabinet, the isolating switch, etc. to achieve five-prevention. Five-prevention usually refers to the abbreviation of five anti-misoperation functions that high-voltage electrical equipment should have to ensure personal safety. Specifically: First, preventing misoperation of opening and closing the circuit breaker; Second, preventing opening and closing the isolating switch with load; Third, preventing misoperation of closing the grounding switch when energized; Fourth, preventing power transmission with the grounding switch; Fifth, preventing entering the energized interval by mistake.

[0003] Currently, regarding the five-prevention measures, the following implementation methods are usually adopted:

[0004] The first method: Install a display and an electromagnetic lock on the switch cabinet. When the switch equipment is energized, the indicator light of the display is on, and at the same time, the electromagnetic lock is locked, making the switch cabinet unable to be opened; when the switch equipment is de-energized, the indicator light of the display is off, and at the same time, the electromagnetic lock is unlocked, enabling the switch cabinet to be opened.

[0005] However, the production cost of the above five-prevention measures is relatively high. Moreover, since the electromagnetic lock no longer functions when the switch cabinet is opened, it is also necessary to configure a mechanism that can control the isolating switch to remain in the open position, thus further increasing the operation difficulty and production cost.

[0006] The second method: Use a mechanical linkage mechanism to interlock the switch cabinet and the isolating switch. However, the existing mechanical linkage mechanisms are mostly composed of a combination of completely rigid transmission shafts and connecting rods, etc. They not only have a complex structure, are not easy to install and arrange, but also the action reliability needs to be improved.

[0007] In view of this, the present invention is specifically proposed. Summary of the Invention

[0008] In order to overcome the above defects, the present invention provides an isolating switch and cabinet door interlocking device, which not only has the characteristics of high use safety, high reliability, meeting the NFPA20 standard, etc., but also has a novel, reasonable and concise structure, low production cost, saves installation space and does not affect the installation layout of other electrical components, and is conducive to application and implementation.

[0009] The technical solution adopted by the present invention to solve its technical problems is: an interlocking device for isolating switch and cabinet door, comprising a switch cabinet and an isolating switch installed in the cabinet body of the switch cabinet, and also provided with an operating rod, a bidirectional flexible shaft capable of transmitting axial motion force in two different directions, a first locking member and a second locking member, wherein the operating rod is rotatably installed on the inner wall of the cabinet body in a manner that one end is inserted into the cabinet body and the other end extends out of the cabinet body, and one end of the operating rod is transmission-connected to the operating handle of the isolating switch through the bidirectional flexible shaft, and the other end of the operating rod is used as an operating end; the first locking member is arranged on the inner side of the cabinet door of the switch cabinet, and the second locking member is rotatably arranged on the inner wall of the cabinet body in a lever manner, and the second locking member can be rotated under the driving of the operating rod;

[0010] When the other end of the operating rod moves upward under the action of external force, the operating rod can drive the isolating switch to a closed state, and drive the second locking member to rotate forward to achieve resistance locking of the first locking member; and when the other end of the operating rod moves downward under the action of external force, the operating rod can drive the isolating switch to an open state, and drive the second locking member to rotate reversely to unlock the first locking member.

[0011] As a further improvement of the present invention, the cabinet body is provided with a rear side wall, a left side wall and a right side wall, one of the left side wall and the right side wall is hinged to the cabinet door, and the other is fixedly connected to a front mounting wall, and the front mounting wall is provided with a strip hole A extending vertically;

[0012] The operating rod is rotatably mounted on the inner wall of the left side wall or the right side wall connected to the front mounting wall, and the other end of the operating rod movably passes through the strip hole A.

[0013] As a further improvement of the present invention, the isolating switch is fixedly arranged on the inner wall of the rear side wall, a mounting frame is fixedly arranged on the inner wall of the left side wall, and the operating rod is in the shape of a straight strip and is rotatably mounted on the mounting frame through a rotating shaft A;

[0014] Correspondingly, a strip hole B extending vertically and allowing the operating rod to movably pass therethrough is provided on one side of the installation frame facing the front installation wall.

[0015] As a further improvement of the present invention, a limiting member capable of limiting and positioning the up and down movement of the other end of the operating rod is fixedly provided on the outer wall of the front mounting wall.

[0016] As a further improvement of the present invention, a handle for the operator to hold is fixedly provided on the other end of the operating rod;

[0017] The limiting member is provided with a substrate fixedly arranged on the outer wall of the front mounting wall and two limiting portions fixedly arranged on the substrate at upper and lower intervals. The substrate and the two limiting portions are respectively provided with movable holes through which the other end of the operating rod passes and communicates with each other, and each of the limiting portions can stop and limit the handle that moves above or beside it.

[0018] As a further improvement of the present invention, the movable hole provided on the substrate is a strip-shaped hole extending vertically, and the movable holes provided on the two limiting portions are respectively curved holes matching the movement track of the other end of the operating rod; in addition, inclined surfaces for guiding the movement of the handle are respectively provided on the two limiting portions.

[0019] As a further improvement of the present invention, the first locking member is provided with a first main body portion fixedly arranged on the inner side of the cabinet door and a hook portion integrally arranged on the side of the first main body portion facing away from the cabinet door;

[0020] The second locking member is provided with a second main body portion and a tension spring. The second main body portion is rotatably mounted on the inner side wall of the mounting frame in such a way that one end is inserted into the mounting frame and the other end extends out of the mounting frame, and a driven groove for locally pressing the operating rod is recessed on one end of the second main body portion, and the other end of the second main body portion is formed into a block structure capable of resisting and cooperating with the hook portion; the tension spring is connected between the second main body portion and the mounting frame to provide an elastic reset force for the second main body portion.

[0021] As a further improvement of the present invention, a receiving plate is mounted on the inner side wall of the mounting frame facing the front mounting wall. The receiving plate is provided with a strip-shaped hole C extending vertically and also allowing the operating rod to pass through movably, and the second main body portion is rotatably arranged on the receiving plate through a rotating shaft B.

[0022] As a further improvement of the present invention, a protective cover communicating with the movable hole is further arranged in the mounting frame, and the protective cover simultaneously covers a part of the operating rod.

[0023] The beneficial effects of the present invention are as follows: ① A mechanical interlock protection mechanism is formed between the disconnect switch and the cabinet door of the present invention, and the above interlock protection mechanism can be manipulated outside the cabinet door, so that the interlock device provided by the present invention has the characteristics of high use safety and high reliability, and at the same time well meets the requirement in the NFPA20 standard that "the disconnect switch must be operable outside the control cabinet". ② The present invention uses a "combination of operating rod and bidirectional flexible shaft" to control the closing or opening of the disconnect switch. It not only has high operating stability and good reliability, but also has a simple structure. In particular, the use of the bidirectional flexible shaft not only saves the installation space but also does not affect the installation layout of other electrical components, thus further improving the use safety of the interlock device. ③ The present invention realizes the blocking and locking or unlocking of the first locking member by driving the second locking member to rotate through the operating rod, which is not only convenient to operate but also has a stable and reliable locking. ④ The overall structure of the interlock device of the present invention is novel, reasonable, simple, and has a low production cost, which is conducive to application and implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural view of the disconnect switch and cabinet door interlock device of the present invention from the first perspective;

[0025] Figure 2 is a schematic structural view of the disconnect switch and cabinet door interlock device of the present invention from the second perspective;

[0026] Figure 3 is a schematic partial structural view of the disconnect switch and cabinet door interlock device of the present invention (mainly removing the cabinet body);

[0027] Figure 4 is an assembled structural view of the operating rod, mounting frame, first and second locking members, etc. of the present invention when assembled together;

[0028] Figure 5 is Figure 4 a schematic structural view of the assembled structure shown from another perspective;

[0029] Figure 6 is an assembled structural view of the operating rod and the second locking member of the present invention assembled on the mounting frame;

[0030] Figure 7 is Figure 6 a schematic structural view of the assembled structure shown from another perspective;

[0031] Figure 8 is a schematic structural view of the limit member of the present invention;

[0032] Figure 9 is a schematic view of the state when the second locking member of the present invention blocks and locks the first locking member.

[0033] Combined with the attached drawings, the following description is given:

[0034] 1. Cabinet; 10. Rear side wall; 11. Left side wall; 12. Right side wall; 13. Front installation wall; 2. Isolating switch; 20. Operating handle; 21. Support A; 3. Operating lever; 30. Rotating shaft A; 4. Bidirectional flexible shaft; 51. First locking member; 510. First main body; 511. Hook; 52. Second locking member; 520. Second main body; 5200. Driven groove; 5201. Block structure; 521. Tension spring; 522. Rotating shaft B; 6. Installation frame; 60. Strip hole B; 61. Support B; 71. Limiting member; 710. Base plate; 711. Limiting part; 712. Movable hole; 713. Inclined surface; 72. Handle; 8. Attachment plate; 80. Strip hole C; 9. Protective cover. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] Example:

[0037] Please see attached Figure 1 To Attachment Figure 9As shown, this embodiment provides an interlocking device for an isolating switch and a cabinet door, comprising a switch cabinet, an isolating switch 2, an operating rod 3, a bidirectional flexible shaft 4 (also called a push-pull flexible shaft) capable of transmitting axial movement force in two different directions, a first locking member 51 and a second locking member 52, wherein the switch cabinet is provided with a cabinet body 1 and a cabinet door hinged on the cabinet body 1 (not shown in the figure, but does not affect the understanding), and the isolating switch 2 is fixedly installed in the cabinet body 1; the operating rod 3 is rotatably installed on the inner wall of the cabinet body 1 in a manner that one end is inserted into the cabinet body 1 and the other end extends out of the cabinet body 1, and one end of the operating rod 3 is also transmission-connected to the operating handle 20 of the isolating switch 2 through the bidirectional flexible shaft 4, and the other end of the operating rod 3 is used as an operating end; the first locking member 51 is arranged on the inner side of the cabinet door, and the second locking member 52 is rotatably arranged on the inner wall of the cabinet body 1 in a lever manner, and the second locking member 52 can be rotated under the drive of the operating rod 3. Based on the above-mentioned structural configuration of the isolating switch and the cabinet door interlocking device, ① when the other end of the operating rod 3 moves upward under the action of external force, one end of the operating rod 3 swings downward and pushes one end of the two-way flexible shaft 4 to move downward, and accordingly, the other end of the two-way flexible shaft 4 moves upward and pushes the operating handle 20 of the isolating switch 2 to move upward, thereby making the isolating switch 2 in a closed state; at the same time, in the process of the other end of the operating rod 3 moving upward, it will also act to make the second locking member 52 rotate forward to achieve the resistance locking of the first locking member 51, that is, the cabinet door is in a locked state. ② When the other end of the operating rod 3 moves downward under the action of external force, one end of the operating rod 3 swings upward and drives one end of the two-way flexible shaft 4 to move upward. Correspondingly, the other end of the two-way flexible shaft 4 moves downward and pulls the operating handle 20 of the isolating switch 2 downward, thereby putting the isolating switch 2 in the open state; at the same time, in the process of the other end of the operating rod 3 moving downward, it will also cause the second locking member 52 to rotate in the opposite direction to unlock the first locking member 51, that is, the cabinet door is in the unlocked state. In short, the isolating switch and cabinet door interlocking device provided in this embodiment has the following functions: when the force is applied to cause the other end of the operating rod 3 to move upward, the isolating switch 2 can be driven to be in a closed state, and the cabinet door can be driven to be in a locked state, ensuring that the cabinet door cannot be opened when the isolating switch is in a powered-on state, thereby realizing interlocking; and when the force is applied to cause the other end of the operating rod 3 to move downward, the isolating switch 2 can be driven to be in an open state, and the cabinet door can be driven to be in an unlocked state, thereby realizing that the cabinet door can be opened when the isolating switch is in a powered-off state, thereby improving safety in use.

[0038] As can be seen from the above, the disconnect switch and cabinet door interlocking device provided by the present application has the following advantages: ① The present application forms a mechanical interlocking protection mechanism (i.e., configures the interlocking device) between the disconnect switch and the cabinet door, and the above interlocking protection mechanism can be manipulated outside the cabinet door, so that the device provided by the present application has the characteristics of high use safety and reliability, and well meets the requirement in the NFPA20 standard that "the disconnect switch must be able to be operated outside the control cabinet". ② The present application uses a "combination of operating rod and bidirectional flexible shaft" to control the closing or opening of the disconnect switch, which not only has high operating stability and good reliability, but also has a simple structure. In particular, the use of the bidirectional flexible shaft not only saves installation space, but also does not affect the installation layout of other electrical components, thereby further improving the use safety of the interlocking device. ③ The present application drives the second locking member to rotate through the operating rod to achieve the blocking and locking or unlocking of the first locking member, which is not only convenient to operate, but also has stable and reliable locking. ④ The overall structure of the interlocking device of the present application is novel, reasonable, simple, and has low production cost, which is conducive to application and implementation.

[0039] The following will describe in detail the specific structure of the disconnect switch and cabinet door interlocking device according to this embodiment.

[0040] Please continue to refer to the attached Figure 1 and the attached Figure 2 As shown, in this embodiment, the cabinet body 1 is provided with a left side wall 11 and a right side wall 12 arranged side by side in the left-right direction, and a rear side wall 10 fixedly connected between the rear sides of the left side wall 11 and the right side wall 12. One of the left side wall 11 and the right side wall 12 is for hinging with the cabinet door, and a front mounting wall 13 is fixedly connected to the other, and a strip-shaped hole A (not shown in the figure, and the specific shape can be referred to the strip-shaped hole B60 described below) extending vertically is provided on the front mounting wall 13. It can be understood that when the cabinet door is in the locked state, the left side edge of the cabinet door is attached and connected to the right side edge of the front mounting wall 13. In addition, the attached Figure 1 shows the situation where the front side of the right side wall 12 is hinged to the cabinet door and the front mounting wall 13 is fixedly connected to the front side of the left side wall 11, but the present application is not limited to the above implementation manner.

[0041] Based on the above implementation structure of the cabinet body 1, the disconnect switch 2 is fixedly arranged on the inner wall of the rear side wall 10, and the operating rod 3 is rotatably installed on the inner wall of the left side wall 11 or the right side wall 12 connected to the front mounting wall 13 (the attached Figure 1 shows that the operating rod 3 is rotatably installed on the left side wall 11), and the other end of the operating rod 3 movably passes through the strip-shaped hole A and extends out of the cabinet body 1. At the same time, the strip-shaped hole A also limits the movement range of the other end of the operating rod 3.

[0042] Further, the implementation structure for realizing the rotational installation of the operating rod 3 on the left side wall 11 in this embodiment is as follows: Please continue to refer to the appended Figure 1 to the appended Figure 7 As shown, an installation frame 6 made of insulating plastic is fixedly arranged on the inner wall of the left side wall 11. A strip-shaped hole B60 extending vertically is provided on one side of the installation frame 6 facing the front installation wall 13. The operating rod 3 is in the shape of a straight strip and is rotationally installed in the installation frame 6 through a rotating shaft A30 (that is, the operating rod 3 is rotationally installed in the installation frame 6 in a lever manner), and at the same time, the other end of the operating rod 3 also movably passes through the strip-shaped hole B60. It can be understood that the installation frame 6 has functions such as bearing, and the strip-shaped hole B60 also provides and limits the movement range of the operating rod 3. And to adapt to the movement track of the operating rod 3, the strip-shaped hole B60 can be designed to have the same size as the strip-shaped hole A and be aligned and communicated (the strip-shaped hole B60 is located behind the strip-shaped hole A). In addition, since the bidirectional flexible shaft 4 is connected between one end of the operating rod 3 and the operating handle 20 of the disconnector 2, a support B61 for receiving and restricting the bidirectional flexible shaft 4 is also arranged on the installation frame 6 in this embodiment (see the appended Figure 4 as shown), and a support A21 for receiving and restricting the bidirectional flexible shaft 4 is arranged on the outer shell of the disconnector 2 (see the appended Figure 3 as shown). It can be understood that through holes for the bidirectional flexible shaft 4 to movably pass through are provided on both the support A21 and the support B61.

[0043] Further, a handle 72 is fixedly arranged on the other end of the operating rod 3 in this embodiment to facilitate the operator to hold and control the operating rod 3. Please refer to the appended Figure 3 to the appended Figure 5 as shown.

[0044] Further, a limiting member 71 is fixedly arranged on the outer wall of the front installation wall 13 in this embodiment to limit and position the up-and-down movement of the other end of the operating rod 3 (specifically, the handle 72).

[0045] The preferred implementation structure of the limiting member 71 is as follows: Please continue to refer to the appended Figure 3 to the appended Figure 5 and the appended Figure 8As shown, the limiting member 71 is provided with a base plate 710 fixedly arranged on the outer wall of the front mounting wall 13 and two limiting portions 711 fixedly arranged on the base plate 710 at an upper and lower interval, and the base plate 710 and the two limiting portions 711 are respectively provided with movable holes 712 for the other end of the operating rod 3 to pass through and are interconnected, and each of the limiting portions 711 can stop and limit the handle 72 moving to the top or side thereof, specifically: the limiting portion 711 located at the top can abut / stop the handle 72 moving to the top thereof, and the limiting portion 711 located at the bottom can abut / stop the handle 72 moving to the side thereof.

[0046] Furthermore, in order to adapt to the motion trajectory of the other end of the operating rod 3, the movable hole 712 provided on the base plate 710 is a strip hole extending in the vertical direction, and the movable holes 712 provided on the two limiting parts 711 are respectively curved holes. In addition, the two limiting parts 711 are respectively provided with inclined surfaces 713 for guiding the movement of the handle 72, that is, the inclined surfaces 713 can facilitate the handle 72 to move to the upper side of the limiting part 711 located above, or to move to the side of the limiting part 711 located below.

[0047] Please continue to refer to the attached Figure 3 To Attachment Figure 7 , and attached Figure 9 As shown, in this embodiment, the first locking member 51 and the second locking member 52 preferably adopt the following implementation structure and installation method: the first locking member 51 is provided with a first main body 510 fixedly arranged on the inner side of the cabinet door and a hook portion 511 integrally arranged on the side of the first main body 510 facing away from the cabinet door; the second locking member 52 is provided with a second main body 520 and a tension spring 521, the second main body 520 is rotatably installed on the inner wall of the installation frame 6 in a manner that one end is inserted into the installation frame 6 and the other end extends out of the installation frame 6, and a driven groove 5200 for local pressing of the operating rod 3 is recessed on one end of the second main body 520, and the other end of the second main body 520 is formed into a block structure 5201 that can resist and cooperate with the hook portion 511; the tension spring 521 is connected between the second main body 520 and the installation frame 6 to provide an elastic reset force to the second main body 520. It can be understood that, ① when the other end of the operating rod 3 moves downward under the action of an external force, the operating rod 3 is partially inserted into the driven groove 5200 and presses the driven groove 5200 downward to drive the second main body 520 to rotate in the opposite direction (to Figure 3Based on the shown orientation, the reverse rotation is the clockwise rotation), thereby separating the block structure 5201 from the hook portion 511, unlocking the first locking member 51, and making the cabinet door in the unlocked state. ② When the other end of the operating rod 3 moves upward under an external force, a part of the operating rod 3 will disengage from the driven groove 5200, enabling the second main body portion 520 to rotate forward (i.e., counterclockwise rotation) under the action of the elastic restoring force, thereby making the block structure 5201 resist and lock the hook portion 511, and making the cabinet door in the locked state.

[0048] Further, the implementation structure for realizing the rotational installation of the second main body portion 520 on the inner side wall of the installation frame 6 in this embodiment is as follows: Please continue to refer to the attached Figure 6 As shown, in this embodiment, a receiving plate 8 is installed on the inner wall of the installation frame 6 on the side facing the front installation wall 13, and the second main body portion 520 is rotatably arranged on the receiving plate 8 through a rotating shaft B522. In addition, to adapt to the operating rod 3 and its movement track, a strip-shaped hole C80 extending vertically and also allowing the operating rod 3 to pass through movably is provided on the receiving plate 8 in this embodiment. Specifically, the strip-shaped hole C80 is located behind the strip-shaped hole B60, and the strip-shaped hole C80 can be designed to have the same size as the strip-shaped hole B60 and be aligned with it, and the driven groove 5200 is also aligned with and communicated with the strip-shaped hole C80.

[0049] In addition, please continue to refer to the attached Figure 3 to the attached Figure 5 As shown, a protective cover 9 communicating with the movable hole 712 is also provided in the installation frame 6 in this embodiment, and the protective cover 9 simultaneously covers a part of the operating rod 3. The protective cover 9 plays roles such as waterproofing and dustproofing.

[0050] Note: The prefixes "first", "second", etc. (such as the first locking member, the second locking member, etc.) of the component names and the suffixes "A", "B", "C", etc. (such as the strip-shaped hole A, the strip-shaped hole B, the strip-shaped hole C, etc.) in this specification are only for the convenience of clear description and are not used to limit the scope of implementation of this invention patent.

[0051] In summary, the disconnector and cabinet door interlocking device of the present invention not only has the characteristics of high use safety, high reliability, and meeting the NFPA20 standard, but also has a novel, reasonable, and concise structure, low production cost, saves installation space, and does not affect the installation layout of other electrical components, which is conducive to application and implementation.

[0052] Numerous specific details have been set forth in the above description to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention, and the present invention can be implemented in many other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed above. At the same time, any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into equivalent embodiments with equivalent changes. All simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An isolating switch and cabinet door interlocking device, comprising a switch cabinet and an isolating switch (2) installed in a cabinet body (1) of the switch cabinet, characterized in that: The cabinet body (1) is provided with a rear side wall (10), a left side wall (11) and a right side wall (12); one of the left side wall (11) and the right side wall (12) is hinged to the cabinet door, and the other is fixedly connected to a front mounting wall (13); the front mounting wall (13) is provided with a strip hole A extending in a vertical direction; An operating rod (3), a bidirectional flexible shaft (4) capable of transmitting axial movement force in two different directions, a first locking member (51) and a second locking member (52) are also provided. The operating rod (3) is rotatably mounted on the inner wall of the left side wall (11) or the right side wall (12) connected to the front mounting wall (13) in a manner such that one end of the operating rod (3) is inserted into the cabinet (1) and the other end is extended out of the cabinet (1). One end of the operating rod (3) is transmission-connected to the operating handle (20) of the disconnector (2) through the bidirectional flexible shaft (4). The other end of the operating rod (3) movably passes through the strip hole A and is fixedly provided with a handle (72) for the operator to hold. The first locking member (51) is arranged on the inner side of the cabinet door of the switch cabinet. The second locking member (52) is rotatably arranged on the inner wall of the cabinet (1) in the manner of a lever, and the second locking member (52) can be rotated under the drive of the operating rod (3); when the other end of the operating rod (3) moves upward under the action of an external force, the operating rod (3) can drive the disconnector (2) to be in a closed state, and drive the second locking member (52) to rotate in a forward direction to achieve blocking and locking of the first locking member (51); and when the other end of the operating rod (3) moves downward under the action of an external force, the operating rod (3) can drive the disconnector (2) to be in an open state, and drive the second locking member (52) to rotate in a reverse direction to unlock the first locking member (51); In addition, a limiting member (71) capable of limiting and positioning the up and down movement of the other end of the operating rod (3) is fixedly arranged on the outer wall of the front mounting wall (13), and the limiting member (71) is provided with a base plate (710) fixedly arranged on the outer wall of the front mounting wall (13) and two limiting portions (711) fixedly arranged on the base plate (710) at an interval up and down, and movable holes (712) for the other end of the operating rod (3) to pass through and are connected to each other are respectively provided on the base plate (710) and the two limiting portions (711), and each of the limiting portions (711) is capable of stopping and limiting the handle (72) moving to the top or side thereof.

2. The disconnector and cabinet door interlocking device according to claim 1, characterized in that: The isolating switch (2) is fixedly mounted on the inner wall of the rear side wall (10), and a mounting frame (6) is fixedly mounted on the inner wall of the left side wall (11); the operating rod (3) is in the shape of a straight strip and is rotatably mounted in the mounting frame (6) via a rotating shaft A (30); Correspondingly, a strip hole B (60) extending vertically and also allowing the operating rod (3) to movably pass through is provided on a side of the installation frame (6) facing the front installation wall (13).

3. The disconnector and cabinet door interlocking device according to claim 2, characterized in that: The movable holes (712) provided on the substrate (710) are strip-shaped holes extending vertically, and the movable holes (712) provided on the two limiting portions (711) are respectively curved holes matching the movement trajectories of the other ends of the operating rods (3); in addition, inclined surfaces (713) for guiding the movement of the handle (72) are respectively provided on the two limiting portions (711).

4. The disconnector and cabinet door interlocking device according to claim 2, wherein: The first locking member (51) is provided with a first main body portion (510) fixedly arranged on the inner side of the cabinet door and a hook portion (511) integrally arranged on the side of the first main body portion (510) facing away from the cabinet door; The second locking member (52) is provided with a second main body portion (520) and a tension spring (521). The second main body portion (520) is rotatably installed on the inner side wall of the installation frame (6) in such a way that one end is inserted into the installation frame (6) and the other end extends out of the installation frame (6). A driven groove (5200) for locally pressing the operating rod (3) is concavely provided at one end of the second main body portion (520), and a block structure (5201) capable of resisting and cooperating with the hook portion (511) is formed at the other end of the second main body portion (520); the tension spring (521) is connected between the second main body portion (520) and the installation frame (6) to provide an elastic reset force to the second main body portion (520).

5. The disconnector and cabinet door interlocking device according to claim 4, characterized in that: A receiving plate (8) is installed on the inner wall of the installation frame (6) facing the front installation wall (13). A strip-shaped hole C (80) extending vertically and also allowing the operating rod (3) to pass through movably is provided on the receiving plate (8). The second main body portion (520) is rotatably arranged on the receiving plate (8) through a rotating shaft B (522).

6. The disconnector and cabinet door interlocking device according to claim 2, wherein: A protective cover (9) communicating with the movable hole (712) is further arranged in the installation frame (6), and the protective cover (9) simultaneously covers a part of the operating rod (3).

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