Interlock for environment-friendly gas circuit breaker cabinet

Abstract

The utility model discloses an interlock for an environment-friendly gas circuit breaker cabinet, which relates to the technical field of circuit breaker cabinets and comprises a circuit breaker clamping plate, a door plate and an isolation mechanism support, the circuit breaker clamping plate is mounted on the door plate, and the isolation mechanism support is arranged at the top of the circuit breaker clamping plate. The device further comprises a three-station isolation mechanism interlock, a circuit breaker interlock and a door interlock. The three-station isolation mechanism interlock comprises a main loop interlock baffle, a transverse isolation mechanism transmission shaft is rotatably connected to an isolation mechanism support, and the isolation mechanism transmission shaft is fixedly connected with a switch position indication cam; according to the interlocking mechanism for the environment-friendly gas circuit breaker cabinet, an interlocking mechanism matched with an upper isolation and lower circuit breaker structure is provided, the structure is compact, the requirements for electrical five-prevention are strictly met, mistaken entering into an electrified interval is prevented, the misoperation risk is eliminated from the hardware level, and meanwhile the requirements for light weight and high reliability of the environment-friendly gas circuit breaker cabinet are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker cabinet technical field, concretely is a kind of interlock for environmental protection gas circuit breaker cabinet. BACKGROUND

[0002] At present, with the promotion of environmental protection policy, traditional SF6 gas insulation switchgear is gradually replaced by nitrogen, dry air and other environmental protection medium. Such equipment needs to meet higher requirements in terms of sealing, anti-misoperation, etc., especially in the "upper isolation lower circuit breaker" layout, mechanical interlocking is required to forcibly realize electrical five-prevention (such as preventing misentry into live compartment, operating disconnecting switch with load, etc.).

[0003] For the structure of upper isolation lower circuit breaker, interlocking needs to control the state of disconnecting switch, circuit breaker and cabinet door at the same time. There are two existing solutions: one is to control the door lock through a single state (such as closing only the grounding switch), which has the risk of operation sequence omission, which may lead to live door opening or misoperation of disconnecting switch, and cannot meet the safety requirements of "double closing condition"; the second is to use a live display with forced locking and electromagnetic lock to solve the safety hazard, but it needs to operate the power supply twice to realize locking, and the electromagnetic lock is easy to be damaged due to long-term live. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide an interlock for environmental protection gas circuit breaker cabinet, provide an interlocking mechanism adapted to the structure of upper isolation lower circuit breaker, which is compact in structure, strictly meets the electrical five-prevention, prevents misentry into live compartment, eliminates the risk of misoperation from the hardware level, meets the requirements of lightweight and high reliability of environmental protection gas cabinet, and can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an interlock for environmental protection gas circuit breaker cabinet, comprising a circuit breaker clamp plate, a door plate and an isolation mechanism support, the door plate is provided with a circuit breaker clamp plate, the top of the circuit breaker clamp plate is provided with an isolation mechanism support, further comprising a three-position isolation mechanism interlock, a circuit breaker interlock and a door interlock;

[0006] The three-position isolation mechanism interlock comprises a main circuit interlock baffle, a grounding baffle, a baffle combined adjusting plate, an interlock brake wire, an isolation mechanism department interlock control plate, a door interlock connection coupling plate, an isolation mechanism transmission shaft, a switch position indicating cam and a switch position indicating positioning rod, the isolation mechanism transmission shaft is transversely connected to the isolation mechanism support, the isolation mechanism transmission shaft is fixedly connected to the switch position indicating cam, the switch position indicating cam is movably connected to the switch position indicating positioning rod, the baffle combined adjusting plate is vertically and slidably installed on the front side of the isolation mechanism support, the baffle combined adjusting plate is connected to the main circuit interlock baffle and the grounding baffle respectively, and the baffle combined adjusting plate is connected to the interlock brake wire, the isolation mechanism department interlock control plate is vertically and slidably installed on the right side of the isolation mechanism support, and the isolation mechanism department interlock control plate is connected to the top of the door interlock connection coupling plate.

[0007] The circuit breaker clamp plate is provided with a circuit breaker interlock, and the door plate is provided with a door interlock.

[0008] Further, the three-position isolation mechanism interlock further comprises an interlock transmission state plate, and the right side of the isolation mechanism support is further provided with the interlock transmission state plate.

[0009] Further, the circuit breaker interlock comprises an interlock transmission rod, a microswitch driving plate, an interlock transmission rod, an interlock fixed plate, a transmission connecting rod, a button lock plate, a circuit breaker closing and opening button device, a door interlock connecting plate, a circuit breaker interlock shaft, a transmission connecting plate, an interlock driving cam and an interlock centering device, the circuit breaker interlock shaft is longitudinally connected to the top right side of the circuit breaker clamp plate, the front end of the circuit breaker interlock shaft is movably connected to the middle part of the microswitch driving plate, the top of the microswitch driving plate is movably connected to the bottom end of the interlock transmission rod, the top end of the interlock transmission rod is connected to the bottom end of the switch position indicating positioning rod, the bottom end of the microswitch driving plate is movably connected to the top end of the interlock transmission rod, the circuit breaker clamp plate is provided with the interlock fixed plate, the interlock transmission rod passes through the limiting groove on the interlock fixed plate, the middle part of the circuit breaker interlock shaft is fixedly connected to the middle part of the interlock driving cam, one end of the interlock driving cam is movably connected to the bottom end of the transmission connecting plate, the top of the transmission connecting plate is connected to the interlock transmission state plate, the other end of the interlock driving cam is movably connected to the top end of the transmission connecting rod, the vertical sliding groove on the transmission connecting rod and the vertical sliding groove on the interlock transmission rod are connected through the interlock centering device, the bottom end of the door interlock connection coupling plate is connected to the top of the door interlock connecting plate, the door interlock connecting plate is connected to the circuit breaker closing and opening button device, and the circuit breaker closing and opening button device is connected to the button lock plate.

[0010] Further, the circuit breaker interlock further comprises a brake wire support plate, the brake wire support plate is installed in the circuit breaker clamp plate, and the interlock brake wire passes through the limiting through hole on the brake wire support plate.

[0011] Further, the door interlock comprises a lower door lock connecting plate, a lower interlock plate and a door interlock hanging device, the right side of the door plate is provided with the lower interlock plate, the bottom end of the door interlock connecting plate is connected with the lower interlock plate, the front end right side of the door plate is provided with the door interlock hanging device, and the middle part of the right side of the door plate is provided with the lower door lock connecting plate.

[0012] Further, the door interlock further comprises a brake wire fixing device and an interlock sliding plate, the rear end right side of the door plate is provided with the brake wire fixing device, the interlock brake wire passes through the brake wire fixing device and is connected with the rear end of the interlock sliding plate, and the interlock sliding plate is longitudinally slidably arranged on the right side of the door plate.

[0013] Further, the door interlock further comprises a brake wire fixing plate, the brake wire fixing plate is arranged on the circuit breaker clamp plate, and the interlock brake wire passes through the limiting round hole of the brake wire fixing plate.

[0014] Compared with the prior art, the interlock for the environmentally friendly gas circuit breaker cabinet has the following beneficial effects:

[0015] 1. Overall interlocking linkage, only when the circuit breaker is closed and the grounding switch is closed, the interlock sliding plate retreats, the lower door lock connecting plate moves up, the lower interlock plate is released from the upward movement restriction, and the three satisfy the conditions, so that the door can be opened and closed.

[0016] 2. The five-prevention interlocking structure is achieved by using pure mechanical components, the entire five-prevention interlocking is achieved by mechanical structure, has high stability and strong durability, realizes double condition forced interlocking, and through mechanical linkage, it is forced to require that the grounding switch and the circuit breaker are in the closed state to unlock the cabinet door, completely eliminates the safety loophole of single condition interlocking, and adopts the compact layout of the vertical linkage rod and the horizontal shielding plate, which is suitable for the narrow space of the upper isolation and lower circuit breaker cabinet.

[0017] 3. The integrated grounding switch, circuit breaker and cabinet door state interlocking can prevent risks such as mistakenly entering a live interval, operating an isolation switch with load and the like, meet the core safety specifications of electrical five-prevention, the interlocking structure is simple, realizes linkage of the isolation mechanism and the circuit breaker mechanism, and forcibly realizes the following operation sequence:

[0018] Power-off operation: separate circuit breaker-separate isolation switch-close grounding switch-close circuit breaker-unlock and open the cabinet door;

[0019] Power-on operation: close cable room door-separate circuit breaker-separate grounding switch-close isolation switch-close circuit breaker;

[0020] The above operation sequence needs to be strictly executed, and if the operation sequence is incorrect, the next process cannot be entered, human safety hazards are eliminated, and the power-on and power-off of the upper isolation and lower circuit breaker ring network cabinet are safe and reliable.

[0021] 4. While ensuring operation safety, the existing interlocking device structure redundancy, frequent maintenance and insufficient adaptability and other problems are solved, and a high-reliability mechanical interlocking solution for the environmental gas circuit breaker cabinet is provided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the utility model;

[0023] Figure 2 It is a partial structure schematic view of three-position isolation mechanism interlocking in the utility model;

[0024] Figure 3 It is a structure schematic view of circuit breaker interlocking in the utility model;

[0025] Figure 4 It is a structure schematic view of rear side of circuit breaker interlocking in the utility model;

[0026] Figure 5 It is a partial structure schematic view of door interlocking in the utility model;

[0027] Figure 6 It is an installation position structure schematic view of brake cable fixing plate, brake cable fixing device and interlocking sliding plate in the door interlocking of the utility model;

[0028] In the drawing: 1 three-position isolation mechanism interlocking, 101 main circuit interlocking baffle, 102 grounding baffle, 103 baffle joint adjusting plate, 104 interlocking brake cable, 105 isolation mechanism department interlocking control plate, 106 interlocking transmission state plate, 107 door interlocking connection coupling plate, 108 isolation mechanism transmission shaft, 109 switch position indication cam, 110 switch position indication positioning rod, 2 circuit breaker interlocking, 201 brake cable support plate, 202 interlocking transmission rod, 203 micro switch driving plate, 204 interlocking transmission rod, 205 interlocking fixed plate, 206 transmission connecting rod, 207 button lock plate, 208 circuit breaker closing and opening button device, 209 door interlocking connecting plate, 210 circuit breaker interlocking shaft, 211 transmission connecting plate, 212 interlocking driving cam, 213 interlocking core, 3 door interlocking, 301 lower door lock connecting plate, 302 lower interlocking plate, 303 door interlocking device, 304 brake cable fixing plate, 305 brake cable fixing device, 306 interlocking sliding plate, 4 circuit breaker clamp plate, 5 door plate, 6 isolation mechanism support. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] Please refer to Figures 1 to 6 The utility model provides a technical scheme: an interlock for an environmental protection gas circuit breaker cabinet, including circuit breaker clamp plate 4, door plate 5 and isolation mechanism support 6, be installed with circuit breaker clamp plate 4 on door plate 5, the top of circuit breaker clamp plate 4 is provided with isolation mechanism support 6, still including three position isolation mechanism interlock 1, circuit breaker interlock 2 and door interlock 3;

[0031] Three position isolation mechanism interlock 1 includes main circuit interlock baffle 101, ground baffle 102, baffle joint adjusting plate 103, interlock brake line 104, isolation mechanism department interlock control board 105, door interlock connection coupling board 107, isolation mechanism transmission shaft 108, switch position indication cam 109 and switch position indication positioning rod 110, the transverse isolation mechanism transmission shaft 108 is rotatably connected on the isolation mechanism support 6, and the isolation mechanism transmission shaft 108 is fixedly connected switch position indication cam 109, and switch position indication cam 109 is movably connected switch position indication positioning rod 110, and the front side of isolation mechanism support 6 is vertically slidably installed baffle joint adjusting plate 103, and baffle joint adjusting plate 103 is connected main circuit interlock baffle 101 and ground baffle 102 respectively, and baffle joint adjusting plate 103 is connected interlock brake line 104, and the right side of isolation mechanism support 6 is vertically slidably installed isolation mechanism department interlock control board 105, and isolation mechanism department interlock control board 105 is connected the top of door interlock connection coupling board 107;

[0032] Circuit breaker interlock 2 is installed on circuit breaker clamp plate 4, and door interlock 3 is installed on door plate 5.

[0033] Three position isolation mechanism interlock 1 further includes interlock transmission state board 106, and the right side of isolation mechanism support 6 is further provided with interlock transmission state board 106.

[0034] The circuit breaker interlock 2 comprises an interlock upper transmission rod 202, a micro switch driving plate 203, an interlock lower transmission rod 204, an interlock fixing plate 205, a transmission connecting rod 206, a button lock plate 207, a circuit breaker closing and opening button device 208, a door interlock connecting plate 209, an interlock shaft 210, a transmission connecting plate 211, an interlock driving cam 212 and an interlock centering device 213. The interlock shaft 210 is longitudinally connected to the top right side of the circuit breaker clamp plate 4. The front end of the interlock shaft 210 is movably connected to the middle part of the micro switch driving plate 203. The top part of the micro switch driving plate 203 is movably connected to the bottom end of the interlock upper transmission rod 202. The top end of the interlock upper transmission rod 202 is connected to the bottom end of the switch position indicating positioning rod 110. The bottom end of the micro switch driving plate 203 is movably connected to the top end of the interlock lower transmission rod 204. The interlock fixing plate 205 is installed on the circuit breaker clamp plate 4. The interlock lower transmission rod 204 passes through the limiting slot on the interlock fixing plate 205. The middle part of the interlock shaft 210 is fixedly connected to the middle part of the interlock driving cam 212. One end of the interlock driving cam 212 is movably connected to the bottom end of the transmission connecting plate 211. The top part of the transmission connecting plate 211 is connected to the interlock transmission state plate 106. The other end of the interlock driving cam 212 is movably connected to the top end of the transmission connecting rod 206. The vertical sliding slot on the transmission connecting rod 206 and the vertical sliding slot on the interlock lower transmission rod 204 are connected through the interlock centering device 213. The bottom end of the door interlock connecting plate 209 is connected to the top part of the door interlock connecting plate 209. The door interlock connecting plate 209 is connected to the circuit breaker closing and opening button device 208, and the circuit breaker closing and opening button device 208 is connected to the button lock plate 207.

[0035] The circuit breaker interlock 2 further comprises a brake wire support plate 201. The brake wire support plate 201 is installed in the circuit breaker clamp plate 4. The interlock brake wire 104 passes through the limiting through hole on the brake wire support plate 201. The brake wire support plate 201 limits the wire arrangement of the interlock brake wire 104.

[0036] The door interlock 3 comprises a lower door lock connecting plate 301, a lower interlock plate 302 and a door interlock device 303. The door plate 5 is provided with the lower interlock plate 302 on the right side. The lower interlock plate 302 is connected to the bottom end of the door interlock connecting plate 209. The door plate 5 is provided with the door interlock device 303 on the right side of the front end. The door plate 5 is provided with the lower door lock connecting plate 301 on the right side of the middle part. The lower door lock connecting plate 301 is connected to the middle part of the lower interlock plate 302.

[0037] The door interlock 3 further comprises a brake wire fixing device 305 and an interlock sliding plate 306. The brake wire fixing device 305 is installed on the right side of the rear end of the door plate 5. The interlock brake wire 104 passes through the brake wire fixing device 305 and is connected to the rear end of the interlock sliding plate 306. The interlock sliding plate 306 is longitudinally and slidably installed in the right side of the door plate 5.

[0038] The door interlock 3 further comprises a brake wire fixing plate 304, the brake wire fixing plate 304 is installed on the breaker clamp plate 4, the interlock brake wire 104 passes through the limiting round hole on the brake wire fixing plate 304, and the brake wire fixing plate 304 limits the wire arrangement of the interlock brake wire 104.

[0039] In use:

[0040] The whole interlock linkage, only when the breaker is closed and the grounding switch is closed, the interlock sliding plate 306 retreats, the lower door lock connecting plate 301 moves up, the lower interlock plate 302 removes the up-moving restriction, and when the three conditions are met, the door can be opened and closed.

[0041] Only the breaker is closed, the interlock sliding plate 306 is pulled by the interlock brake wire 104 fixed on the brake wire fixing device 305, the interlock sliding plate 306 retreats, and no longer blocks the door plate insertion hole, thereby meeting one of the conditions for opening and closing the door. However, the interlock brake wire 104 originally pulls the baffle joint adjusting plate 103 to lose the down-moving ability under the action of the closed breaker, the baffle joint adjusting plate 103 moves up, becomes the initial force-free state, drives the main circuit interlock baffle 101 and the grounding baffle 102 to move up, blocks the isolation switch and the grounding switch operation hole, cannot be operated, thereby not meeting the grounding closing condition, and the door cannot be opened and closed.

[0042] Only when the breaker and the isolation mechanism are tripped, the interlock brake wire 104 is pulled, the baffle joint adjusting plate 103 moves down, drives the main circuit interlock baffle 101 and the grounding baffle 102 to move down, no longer blocks the isolation mechanism operation, and the interlock sliding plate 306 advances at the same time, at this time, none of the conditions for opening and closing the door is met, but the breaker and the isolation mechanism can be operated.

[0043] Only when the grounding switch is closed first, the isolation mechanism transmission shaft 108 rotates, drives the switch position indicating cam 109 to rotate, the switch position indicating positioning rod 110 moves up, sequentially drives the interlock upper transmission rod 202, the micro switch driving plate 203 and the interlock lower transmission rod 204, at this time, the lower door lock connecting plate 301 moves up after receiving the transmission instruction, no longer blocks the door opening and closing, and the door opening and closing condition is met. At the same time, after the grounding switch is closed, the interlock transmission state plate 106 moves down, pulls the transmission connecting plate 211 to move down, drives the transmission connecting rod 206 to move up under the action of the interlock driving cam 212, removes the up-moving restriction of the door interlock connecting plate 209 through the slide rail structure on the interlock centering device 213 and the interlock lower transmission rod 204, and the lower interlock plate 302 linked with the door interlock connecting plate 209 also removes the up-moving restriction, thereby meeting the second door opening and closing condition. At this time, the grounding switch is closed, the isolation mechanism transmission shaft 108 rotates, the interlock leaf at the isolation switch operation hole rotates to a specific position under the action of the cam structure inside the isolation mechanism, and the interlock transmission state plate 106 moves down due to the action of the internal mechanism after being closed by the grounding switch, is clamped, and the operation rod cannot be inserted to operate the isolation switch.

[0044] Secondly, the circuit breaker, the interlocking brake cable 104 fixed on the interlocking brake cable 104 fixed on the brake cable fixing device 305 is pulled, the interlocking sliding plate 306 retreats, and no longer blocks the door plate insertion hole, at this time, the interlocking sliding plate 306 retreats, the lower door lock connecting plate 301 moves up, the lower interlocking plate 302 removes the upward movement restriction, and the condition is met, and the door can be opened and closed.

[0045] Finally, when the door is opened, the door plate pulls up the lower interlocking plate 302 to move up, the door interlocking connecting coupling plate 107 fixed by the lower interlocking plate 302 drives the isolation mechanism department interlocking control plate 105 to move up, the baffle joint adjustment plate 103 fixed thereto moves up, triggers the main circuit interlocking baffle 101 and the grounding baffle 102 to move up, blocks the operating hole of the isolation switch and the grounding switch, and cannot operate the isolation switch and the grounding switch. At the same time, the circuit breaker closing and opening button device 208 inside the sheet metal connected with the door interlocking connecting plate 209 is displaced, and the closing and opening button function of the circuit breaker is blocked.

[0046] When the door is opened, the lower interlocking plate 302 is blocked by the door interlocking device 303 and cannot naturally move down, and can only move down after hanging the door. At this time, the circuit breaker, the isolation switch and the grounding switch cannot be operated, preventing live operation and eliminating safety hazards. When the door is closed, the door interlocking device 303 is inserted into the door plate lock tongue, the lower interlocking plate 302 naturally falls, drives the related transmission member to displace, and the circuit breaker can be operated to open.

[0047] It should be noted that in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0048] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An interlock for an environmentally friendly gas circuit breaker cabinet, comprising a circuit breaker clamp plate (4), a door plate (5) and an isolation mechanism support (6), the circuit breaker clamp plate (4) is installed on the door plate (5), and the top of the circuit breaker clamp plate (4) is provided with the isolation mechanism support (6), characterized in that, Also includes three-position isolation mechanism interlock (1), circuit breaker interlock (2) and door interlock (3); Three-position isolation mechanism interlock (1) contains main circuit interlock baffle (101), ground baffle (102), baffle joint adjusting plate (103), interlock brake line (104), isolation mechanism department interlock control plate (105), door interlock connection coupling plate (107), isolation mechanism transmission shaft (108), switch position indication cam (109) and switch position indication positioning rod (110), the isolation mechanism support (6) is rotatably connected with the transverse isolation mechanism transmission shaft (108), the isolation mechanism transmission shaft (108) is fixedly connected with the switch position indication cam (109), the switch position indication cam (109) is movably connected with the switch position indication positioning rod (110), the front side of the isolation mechanism support (6) is vertically slidably installed with the baffle joint adjusting plate (103), the baffle joint adjusting plate (103) is connected with the main circuit interlock baffle (101) and the ground baffle (102) respectively, and the baffle joint adjusting plate (103) is connected with the interlock brake line (104), the right side of the isolation mechanism support (6) is vertically slidably installed with the isolation mechanism department interlock control plate (105), the isolation mechanism department interlock control plate (105) is connected with the top of the door interlock connection coupling plate (107); The circuit breaker clamp plate (4) is installed with the circuit breaker interlock (2), and the door plate (5) is installed with the door interlock (3).

2. An interlock for an environmentally friendly gas circuit breaker cabinet according to claim 1, characterized in that: The three-position isolation mechanism interlock (1) further comprises an interlock transmission state plate (106), and the right side of the isolation mechanism support (6) is further provided with the interlock transmission state plate (106).

3. An interlock for an environmentally friendly gas circuit breaker cabinet according to claim 2, characterized in that: The circuit breaker interlock (2) comprises an interlock upper transmission rod (202), a micro switch driving plate (203), an interlock lower transmission rod (204), an interlock fixing plate (205), a transmission connecting rod (206), a button lock plate (207), a circuit breaker closing and opening button device (208), a door interlock connecting plate (209), a circuit breaker interlock shaft (210), a transmission connecting plate (211), an interlock driving cam (212) and an interlock centering device (213), the top right side of the circuit breaker clamp plate (4) is rotationally connected with a longitudinal circuit breaker interlock shaft (210), the front end of the circuit breaker interlock shaft (210) is movably connected with the middle part of the micro switch driving plate (203), the top of the micro switch driving plate (203) is movably connected with the bottom end of the interlock upper transmission rod (202), the top end of the interlock upper transmission rod (202) is connected with the bottom end of the switch position indicating positioning rod (110), the bottom end of the micro switch driving plate (203) is movably connected with the top end of the interlock lower transmission rod (204), the circuit breaker clamp plate (4) is provided with the interlock fixing plate (205), the interlock lower transmission rod (204) passes through the limiting groove on the interlock fixing plate (205), the middle part of the circuit breaker interlock shaft (210) is fixedly connected with the middle part of the interlock driving cam (212), one end of the interlock driving cam (212) is movably connected with the bottom end of the transmission connecting plate (211), the top of the transmission connecting plate (211) is connected with the interlock transmission state plate (106), the other end of the interlock driving cam (212) is movably connected with the top end of the transmission connecting rod (206), the vertical sliding groove on the transmission connecting rod (206) and the vertical sliding groove on the interlock lower transmission rod (204) are connected through the interlock centering device (213), the bottom end of the door interlock connecting plate (209) is connected with the top of the door interlock connecting plate (209), the door interlock connecting plate (209) is connected with the circuit breaker closing and opening button device (208), and the circuit breaker closing and opening button device (208) is connected with the button lock plate (207).

4. An interlock for an environmentally friendly gas circuit breaker cabinet according to claim 3, characterized in that: The circuit breaker interlock (2) further comprises a brake wire support plate (201), the brake wire support plate (201) is installed in the circuit breaker clamp plate (4), and the interlock brake wire (104) passes through the limiting through hole on the brake wire support plate (201).

5. An interlock for an environmentally friendly gas circuit breaker cabinet according to claim 4, characterized in that: The door interlock (3) comprises a lower door lock connecting plate (301), a lower interlock plate (302) and a door interlock device (303), the door plate (5) is provided with the lower interlock plate (302) on the right side, the lower interlock plate (302) is connected with the bottom end of the door interlock connecting plate (209), the door plate (5) is provided with the door interlock device (303) on the front right side, the door plate (5) is provided with the lower door lock connecting plate (301) on the right middle part, and the lower door lock connecting plate (301) is connected with the middle part of the lower interlock plate (302).

6. An interlock for an environmentally friendly gas circuit breaker cabinet according to claim 5, characterized in that: The door interlock (3) further comprises a brake wire fixing device (305) and an interlocking slide plate (306), the brake wire fixing device (305) is installed on the right side of the rear end of the door panel (5), the interlocking brake wire (104) passes through the brake wire fixing device (305) and is connected to the rear end of the interlocking slide plate (306), and the interlocking slide plate (306) is longitudinally slidably installed on the right side of the door panel (5).

7. An interlock for an environmentally friendly gas circuit breaker cabinet according to claim 5, wherein: The door interlock (3) further comprises a brake wire fixing plate (304), the brake wire fixing plate (304) is installed on the circuit breaker clamping plate (4), and the interlocking brake wire (104) passes through the limiting round hole on the brake wire fixing plate (304).

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