Isolation switch and cabinet door interlocking device

Abstract

The invention discloses a disconnecting switch and cabinet door interlocking device, which comprises a switch cabinet, a disconnecting switch, an operating rod, a bidirectional flexible shaft, a first locking piece and a second locking piece, and is characterized in that one end of the operating rod is inserted into a cabinet body, and the other end of the operating rod extends out of the cabinet body and is rotatably mounted on the inner side wall of the cabinet body; one end of the operating rod is in transmission connection with an operating handle of the isolating switch through a bidirectional flexible shaft; the first locking piece is arranged on the inner side of the cabinet door, the second locking piece is rotationally arranged on the inner side wall of the cabinet body, and the second locking piece can be driven by the operating rod to rotate; when the other end of the operating rod moves upwards, the operating rod drives the isolating switch to be in a closed state and drives the second locking piece to stop and lock the first locking piece; and when the other end of the operating rod moves downwards, the operating rod drives the isolating switch to be in an opening state and drives the second locking piece to unlock the first locking piece. The interlocking device has the advantages of being simple in structure, saving installation space, being safe and reliable to use, meeting the NFPA20 standard and the like, and is beneficial to implementation.

Description

Technical Field

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

[0002] As we all know, in the main circuit system composed of disconnectors, vacuum contactors and high-voltage capacitors, the switch cabinets, disconnectors, etc. need to be interlocked to achieve the five protections. The five protections usually refer to the five anti-error functions that high-voltage electrical equipment should have to ensure personal safety, specifically: 1. Preventing the accidental opening and closing of circuit breakers; 2. Preventing the opening and closing of disconnectors under load; 3. Preventing the accidental closing of grounding switches when energized; 4. Preventing power supply with grounding switches; 5. Preventing accidental entry into energized intervals.

[0003] At present, the five prevention measures are usually implemented as follows: The first method: Install a display and an electromagnetic lock on the switch cabinet. When the switch device is energized, the indicator light of the display is on and the electromagnetic lock is locked, so that the switch cabinet cannot be opened; when the switch device is not energized, the indicator light of the display is off and the electromagnetic lock is unlocked, so that the switch cabinet can be opened.

[0004] However, the production cost of the above five-prevention measures is relatively high. Moreover, since the electromagnetic lock no longer works when the switch cabinet is opened, a mechanism that can control the disconnector to maintain the open state must be configured, which further increases the difficulty of operation and production cost.

[0005] The second method is to use a mechanical linkage mechanism to interlock the switch cabinet and the disconnector. However, the existing mechanical linkage mechanism is mostly composed of a combination of a completely rigid transmission shaft and a connecting rod, which is not only complex in structure and difficult to install and arrange, but also has a need to improve its action reliability.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] In order to overcome the above-mentioned defects, the present invention provides an isolating switch and cabinet door interlocking device, which not only has the characteristics of high safety and reliability, and meets the NFPA20 standards, but also has a novel, reasonable and simple structure, low production cost, saves installation space, and will not affect the installation layout of other electrical components, which is conducive to application implementation.

[0008] 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; 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.

[0009] 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; 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.

[0010] 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; 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.

[0011] 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.

[0012] 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; The limiting component is provided with a base plate fixedly arranged on the outer wall of the front mounting wall and two limiting parts fixedly arranged on the base plate at an upper and lower interval. The base plate and the two limiting parts are respectively provided with movable holes for the other end of the operating rod to pass through and are connected to each other, and each of the limiting parts can stop and limit the handle moving to the top or side of it.

[0013] As a further improvement of the present invention, the movable hole provided on the base plate is a strip hole extending vertically, and the movable holes provided on the two limiting parts are respectively curved holes matching the movement trajectory of the other end of the operating rod; in addition, the two limiting parts are respectively provided with inclined surfaces for guiding the movement of the handle.

[0014] As a further improvement of the present invention, the first locking member comprises a first main body portion fixedly arranged on the inner side of the cabinet door and a hook portion integrally arranged on a side of the first main body portion facing away from the cabinet door; The second locking member is provided with a second main body and a tension spring. The second main body is rotatably mounted on the inner wall of the mounting frame in a manner that one end of the second main body is inserted into the mounting frame and the other end extends out of the mounting frame. A driven groove for local pressing of the operating rod is recessed on one end of the second main body, and the other end of the second main body is formed into a block structure capable of resisting and cooperating with the hook. The tension spring is connected between the second main body and the mounting frame to provide an elastic reset force to the second main body.

[0015] As a further improvement of the present invention, a receiving plate is installed on the inner wall of the installation frame on one side facing the front installation wall, and the receiving plate is provided with a strip hole C extending vertically and also for the operating rod to movably pass through, and the second main body is rotatably arranged on the receiving plate through a rotating shaft B.

[0016] As a further improvement of the present invention, a protective cover connected to the movable hole is further arranged in the installation frame, and the protective cover is also arranged to cover the outside of the operating rod.

[0017] The beneficial effects of the present invention are as follows: ① The present invention forms a mechanical interlocking protection mechanism between the isolating switch and the cabinet door, and the interlocking protection mechanism can be controlled and implemented outside the cabinet door, so that the interlocking device provided by the present invention has the characteristics of high safety and high reliability, and well meets the provisions of the NFPA20 specification that "the isolating switch must be able to be operated outside the control cabinet". ② The present invention adopts "a combination of an operating rod and a two-way flexible shaft" to control the isolating switch to close or open the switch, which not only has high operational stability and good reliability, but also has a simple structure. In particular, the use of a two-way flexible shaft saves installation space and does not affect the installation layout of other electrical components, thereby further improving the safety of the interlocking device. ③ The present invention drives the second locking member to rotate through the operating rod to achieve the blocking locking or unlocking of the first locking member, which is not only convenient to operate, but also stable and reliable. ④ The overall structure of the interlocking device described in the present invention is novel, reasonable, simple, and has a low production cost, which is conducive to application implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the isolating switch and the cabinet door interlocking device of the present invention at a first viewing angle; Figure 2 It is a structural schematic diagram of the isolating switch and the cabinet door interlocking device of the present invention at a second viewing angle; Figure 3 It is a partial structural schematic diagram of the isolating switch and cabinet door interlocking device of the present invention (mainly removing the cabinet body); Figure 4 It is a schematic diagram of the assembly structure when the operating rod, the mounting frame, and the first and second locking members of the present invention are assembled together; Figure 5 for Figure 4 A schematic diagram of the structure of the assembly structure shown in another viewing angle; Figure 6 It is a schematic diagram of the assembly structure of the operating rod and the second locking member of the present invention assembled on the installation frame; Figure 7 for Figure 6 A schematic diagram of the structure of the assembly structure shown in another viewing angle; Figure 8 It is a structural schematic diagram of the position-limiting member of the present invention; Fig. 9 This is a schematic diagram of the state when the second locking member of the present invention blocks and locks the first locking member.

[0019] Combined with the attached drawings, the following description is given: 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

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] Example: Please see attached Figure 1 To Attachment Fig. 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.

[0022] As can be seen from the above, the interlocking device between the isolating switch and the cabinet door provided by the present application has the following advantages: ① The present application forms a mechanical interlocking protection mechanism between the isolating switch and the cabinet door (i.e., the interlocking device is configured), and the interlocking protection mechanism can be controlled and implemented outside the cabinet door, so that the device provided by the present application has the characteristics of high safety and high reliability, and well meets the provisions of the NFPA20 specification that "the isolating switch must be able to be operated outside the control cabinet". ② The present application adopts "operating rod and bidirectional flexible shaft combination" to control the isolating switch to close or open the switch, which not only has high operational stability and good reliability, but also has a simple structure. In particular, the use of the bidirectional flexible shaft saves installation space and does not affect the installation layout of other electrical components, thereby further improving the safety of the interlocking device. ③ The present application drives the second locking member to rotate through the operating rod to realize the blocking locking or unlocking of the first locking member, which is not only convenient to operate, but also stable and reliable. ④ The overall structure of the interlocking device described in the present application is novel, reasonable, simple, and has low production cost, which is conducive to application implementation.

[0023] The specific structure of the isolating switch and cabinet door interlocking device described in this embodiment is described in detail below.

[0024] Please continue to refer to the attached Figure 1 and 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 hinged to the cabinet door, and the other is fixedly connected with a front mounting wall 13, and the front mounting wall 13 is provided with a strip hole A extending vertically (not shown in the figure, the specific shape can refer to the strip hole B60 described below). It can be understood that when the cabinet door is in a locked state, the left side edge of the cabinet door is closely connected to the right side edge of the front mounting wall 13. In addition, the attached Figure 1 The figure shows a situation in which 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 embodiment.

[0025] Based on the above implementation structure of the cabinet 1, the isolating switch 2 is fixedly arranged on the inner wall of the rear side wall 10, and 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 (see FIG. 1 ). Figure 1 , the operating rod 3 is rotatably mounted on the left side wall 11, and the other end of the operating rod 3 moves through the strip hole A to extend out of the cabinet 1. At the same time, the strip hole A also limits the range of movement of the other end of the operating rod 3.

[0026] Further, the implementation structure of the present embodiment to realize the rotational installation of the operating rod 3 on the left side wall 11 is as follows: Figure 1 To Attachment Figure 7 As shown, a mounting frame 6 made of insulating plastic is fixedly installed on the inner wall of the left side wall 11, and a strip hole B60 extending vertically is provided on the side of the mounting frame 6 facing the front mounting wall 13; the operating rod 3 is in the shape of a straight strip and is rotatably installed in the mounting frame 6 through a rotating shaft A30 (that is, the operating rod 3 is rotatably installed in the mounting frame 6 in a lever manner), and at the same time, the other end of the operating rod 3 also moves through the strip hole B60. It can be understood that the mounting frame 6 has functions such as bearing, and the strip hole B60 also provides and limits the range of movement of the operating rod 3, and in order to adapt to the movement trajectory of the operating rod 3, the strip hole B60 can be designed to be consistent with the size of the strip hole A, and to be aligned and connected (the strip hole B60 is located behind the strip 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 isolating switch 2, the present embodiment further provides a support B61 (see attached figure) on the mounting frame 6 for receiving and limiting the bidirectional flexible shaft 4. Figure 4 As shown), and a support A21 (see attached) for receiving and limiting the bidirectional flexible shaft 4 is provided on the housing of the isolating switch 2. Figure 3 As shown), it can be understood that both the support A21 and the support B61 are provided with through holes for the bidirectional flexible shaft 4 to movably pass through.

[0027] Furthermore, in this embodiment, a handle 72 is fixedly provided on the other end of the operating rod 3 to facilitate the operator to hold and operate the operating rod 3. Figure 3 To Attachment Figure 5 shown.

[0028] Furthermore, in this embodiment, a limiting member 71 is fixedly provided on the outer wall of the front mounting wall 13 to limit and position the up and down movement of the other end of the operating rod 3 (specifically, the handle 72 ).

[0029] The preferred implementation structure of the limiting member 71 is: Figure 3 To Attachment Figure 5 , and attached 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.

[0030] 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.

[0031] Please continue to refer to the attached Figure 3 To Attachment Figure 7 , and attached Fig. 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 3② When the other end of the operating rod 3 moves upward under the action of an external force, the operating rod 3 will partially disengage from the driven groove 5200, so that the second main body 520 rotates forward (i.e., rotates counterclockwise) under the action of an elastic reset force, so that the block structure 5201 resists and locks the hook 511, so that the cabinet door is in a locked state.

[0032] Further, the implementation structure of the second main body 520 being rotatably mounted on the inner wall of the mounting frame 6 in this embodiment is as follows: Figure 6 As shown, in this embodiment, a receiving plate 8 is installed on the inner wall of the installation frame 6 facing the front installation wall 13, and the second main body 520 is rotatably arranged on the receiving plate 8 via a rotating shaft B522. In addition, in order to adapt to the operating rod 3 and its movement trajectory, in this embodiment, a strip hole C80 extending vertically and also for the operating rod 3 to movably pass through is also provided on the receiving plate 8. Specifically, the strip hole C80 is located behind the strip hole B60. The strip hole C80 can be designed to be consistent in size with the strip hole B60 and aligned with it, and the driven groove 5200 is also aligned with and connected to the strip hole C80.

[0033] In addition, please refer to the attached Figure 3 To Attachment Figure 5 As shown, in this embodiment, a protective cover 9 connected to the movable hole 712 is further provided in the installation frame 6, and the protective cover 9 is also provided outside a part of the operating rod 3. The protective cover 9 plays the role of waterproofing and dustproofing.

[0034] Note: The prefixes "first", "second", etc. of the component names in this specification (such as the first locking member, the second locking member, etc.), and the suffixes "A", "B", "C", etc. of the component names (such as bar hole A, bar hole B, bar hole C, etc.) are only for the convenience of description and are not used to limit the scope of implementation of the patent of this invention.

[0035] In summary, the isolating switch and cabinet door interlocking device described in the present invention not only has the characteristics of high safety, high reliability, and meets the NFPA20 standard, but also has a novel, reasonable, and simple structure, low production cost, saves installation space, and will not affect the installation layout of other electrical components, which is conducive to application implementation.

[0036] Many specific details are described 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. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person familiar with the art can make many possible changes and modifications to the technical solution of the present invention 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 an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls 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: An operating rod (3), a bidirectional flexible shaft (4) capable of transmitting axial motion 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 cabinet (1) in a manner that one end of the operating rod (3) is inserted into the cabinet (1) and the other end of the operating rod (3) 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) is used as an operating end. 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 a lever manner. 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).

2. The isolating switch and cabinet door interlocking device according to claim 1, 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; 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), and the other end of the operating rod (3) movably passes through the strip hole A.

3. The isolating switch and cabinet door interlocking device according to claim 2 is 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).

4. The isolating switch and cabinet door interlocking device according to claim 3 is characterized in that: 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).

5. The isolating switch and cabinet door interlocking device according to claim 4 is characterized in that: A handle (72) for an operator to hold is fixedly provided on the other end of the operating rod (3); 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. 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. Each of the limiting portions (711) is capable of stopping and limiting the handle (72) that moves to the top or side thereof.

6. The isolating switch and cabinet door interlocking device according to claim 5, characterized in that: The movable hole (712) provided on the base plate (710) is a strip-shaped hole extending in the vertical direction, and the movable holes (712) provided on the two limiting portions (711) are respectively curved holes matching the movement trajectory of the other end of the operating rod (3); in addition, the two limiting portions (711) are respectively provided with inclined surfaces (713) for guiding the movement of the handle (72).

7. The isolating switch and cabinet door interlocking device according to claim 3 is characterized in that: The first locking member (51) comprises a first main body (510) fixedly arranged on the inner side of the cabinet door and a hook (511) integrally arranged on a 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 mounted on the inner wall of the mounting frame (6) in a manner that one end is inserted into the mounting frame (6) and the other end extends out of the mounting frame (6); a driven groove (5200) is recessed on one end of the second main body (520) for local pressing of the operating rod (3); the other end of the second main body (520) is formed into a block structure (5201) capable of resisting and cooperating with the hook (511); the tension spring (521) is connected between the second main body (520) and the mounting frame (6) to provide an elastic restoring force to the second main body (520).

8. The isolating switch and cabinet door interlocking device according to claim 7, characterized in that: A receiving plate (8) is mounted on an inner wall of the mounting frame (6) facing the front mounting wall (13). The receiving plate (8) is provided with a strip hole C (80) extending vertically and also for the operating rod (3) to movably pass through. The second main body (520) is rotatably mounted on the receiving plate (8) via a rotating shaft B (522).

9. The isolating switch and cabinet door interlocking device according to claim 5, characterized in that: A protective cover (9) in communication with the movable hole (712) is also provided in the installation frame (6), and the protective cover (9) is also provided to cover a part of the operating rod (3).

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