User-friendly low-voltage switch cabinet with safety protection interlocking device

Abstract

The invention discloses a user-friendly low-voltage switch cabinet with a safety protection interlocking device. Comprising a static connection assembly module, a hinge interlocking protection mechanism, an anti-misoperation interlocking bottom plate, a modular circuit breaker, a movable connection assembly module, a closing interlocking mechanism and an electromagnetic protection interlocking mechanism which are arranged on an installation bottom plate of a cabinet body, the static connection assembly module is fixedly arranged on the installation bottom plate, and the hinge interlocking protection mechanism is installed on the assembly end face of the installation bottom plate. The modularized circuit breaker is installed on the anti-misoperation interlocking bottom plate, the anti-misoperation interlocking bottom plate is combined with the anti-misoperation positioning screws on the installation bottom plate, and the anti-misoperation interlocking bottom plate is combined with the hinge interlocking protection mechanism in an interlocking mode. The low-voltage switch cabinet has the advantages that the protection mechanism composed of the universal low-voltage complete circuit breaker switch module equipment and the safety interlocking protection structure of the adjustable module equipment is adopted in the low-voltage switch cabinet, the safety of operators is guaranteed, and the friendly operation experience of operation and maintenance personnel is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution equipment safety control structure, and more specifically, especially relates to a user-friendly low-voltage switch cabinet with a safety protection interlocking device. Background Art

[0002] In modern power supply systems, low-voltage switchgear, as a key device for power distribution and control, is widely used in various industrial, commercial and civil places. As one of the core components of low-voltage switchgear, pluggable circuit breakers play a vital role in circuit on-off control, overload protection and short-circuit protection. However, in the operation and maintenance process of repairing or replacing pluggable circuit breakers of fixed low-voltage cabinets, there are many operational risks, which seriously threaten the personal safety of operation and maintenance personnel and the stable operation of the power system.

[0003] (I) Problems with live plugging and unplugging in the closed state At present, many plug-in circuit breakers of fixed low-voltage cabinets are not equipped with effective interlocking devices. This makes it possible for maintenance personnel to remove the switch body from the switch base without knowing it when the switch is in the closed state. In some places where there is a lack of standardized operating procedures and effective equipment protection, plug-in and pull-out operations are often performed without realizing that the switch is in the closed state. This live plug-in and pull-out operation is very likely to cause arcing. The high temperature and strong light generated by the arc will not only instantly burn the maintenance personnel, but may also cause serious accidents such as electrical fires and explosions, resulting in huge losses.

[0004] (II) Problem of exposed live conductors on the base When the switch body is pulled out from the base, the live conductors on the base will be partially exposed. In the narrow space inside the low-voltage cabinet, when the operation and maintenance personnel are replacing the switch, it is easy to accidentally touch these exposed live conductors due to obstructed vision, limited operating space, and distracted attention, causing electric shock accidents and casualties.

[0005] (III) Issues with the rupture and removal of the insulation material of the switch body During the installation and removal of plug-in circuit breakers, if the operator performs improper construction, such as using excessive torque to tighten the screws connecting the switch body and the base, or using excessive force or incorrect direction during the plug-in and pull-out process, the insulating material on the switch body may burst. The bursting of the insulating material will not only reduce the insulation performance of the switch, but may also cause the internal live parts to be exposed, increasing the risk of electric shock. Damaging the switch also makes subsequent maintenance work more complicated and dangerous.

[0006] When the insulating connection of the switch body is broken, the screws of the switch moving assembly are still connected to the base because there is no emergency unlocking device. At this time, if the switch body is to be removed, it is often necessary to violently remove the entire switch base. This removal method is not only difficult to construct, but also takes a lot of time and manpower. In addition, during the removal process, since the switch base is electrified, the operation and maintenance personnel are very likely to be electrocuted, which brings serious obstacles to the maintenance work.

[0007] (IV) Preventing misoperation during installation When installing the circuit breaker body and moving components, existing plug-in circuit breakers often lack obvious anti-misoperation designs. This makes the operation and maintenance personnel rely solely on experience or memory during the installation process, which is prone to installation errors. For example, installing the circuit breaker body in the opposite direction, connecting the moving components incorrectly, etc. These incorrect installations may cause the circuit breaker to not work properly, or even cause failures during power transmission, affecting normal power transmission. Installation errors will not only affect the normal operation of a single circuit breaker, but may also threaten the stability and reliability of the entire power system.

[0008] (V) Poor contact of conductor lap surfaces As a multi-switch adjustable adapter, the contact quality of the conductor joint surface of the plug-in circuit breaker directly affects the quality of power transmission. If the conductor joint surface is not in good contact, the circuit resistance will be too high. According to Joule's law, the increase in resistance will cause the conductor to generate more heat when current passes through it, resulting in excessive temperature rise. When the temperature rise does not meet the national standards, it will not only accelerate the aging and damage of the conductor, but may also cause safety accidents such as fire, causing huge economic losses to the company.

[0009] In summary, these operational risks in the repair or replacement process of plug-in circuit breakers in existing fixed low-voltage cabinets seriously affect the safe and stable operation of the power system and the personal safety of operation and maintenance personnel. Therefore, it is urgent to develop a switch cabinet circuit breaker with a safe plug-in mechanism with a locking mechanism. Summary of the invention

[0010] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art in practical applications and to provide a user-friendly low-voltage switch cabinet with a safety protection interlocking device which is easy to install, firmly assembled and safe to use.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions: A user-friendly low-voltage switch cabinet with a safety protection interlocking device is provided on the installation base plate of the cabinet body with a static connection component module, a hinge interlocking protection mechanism, an anti-misoperation interlocking base plate, a modular circuit breaker, a dynamic connection component module, a closing interlocking mechanism, and an electromagnetic protection interlocking mechanism. The hinge interlocking protection mechanism is used to block the exposed copper busbar of the static connection component module through an interlocking action when the dynamic connection component module is not installed or removed, so as to avoid accidents caused by accidental touch during operation. The anti-misoperation interlocking base plate is used to install the modular circuit breaker and to perform interlocking actions in combination with the hinge interlocking protection mechanism. The dynamic connection component module is used to connect the modular circuit breaker with the static connection component module after the modular circuit breaker is installed. The closing interlocking mechanism is used to realize manual closing lock interlocking in combination with the modular circuit breaker. The electromagnetic protection interlocking mechanism is used to realize electric control closing lock interlocking protection in combination with the modular circuit breaker.

[0012] Among them, the static connection component module is fixedly arranged on the mounting base plate, the hinge interlocking protection mechanism is installed on the assembly end surface of the mounting base plate, the modular circuit breaker is installed on the anti-misoperation interlocking base plate, the anti-misoperation interlocking base plate is combined with the anti-misoperation positioning screws on the mounting base plate, the anti-misoperation interlocking base plate and the hinge interlocking protection mechanism are interlocked with each other, the dynamic connection component module is connected and combined with the static connection component module and the modular circuit breaker, the closing interlocking mechanism is interlocked with the modular circuit breaker and installed on the anti-misoperation interlocking base plate, the electromagnetic protection interlocking mechanism is connected to the modular circuit breaker, and the electromagnetic protection interlocking mechanism is installed on the fixed plate of the mounting base plate.

[0013] Preferably, the hinge interlocking protection mechanism includes a cover plate, which is mounted on a mounting base plate, a rotating connecting rod on the rotating stud of the cover plate, and the interlocking stud of the rotating connecting rod can be slidably arranged in the interlocking guide hole of the cover plate, and the interlocking guide hole is inclined. Both ends of the rotating connecting rod are rotatably connected with a transmission connecting rod, and one end of the transmission connecting rod is rotatably connected with a protective connecting rod, and an insulating guard plate is installed on the protruding end of the protective connecting rod. The rotating connecting rod rotates around the rotating stud as the center under the sliding cooperation between the interlocking stud and the interlocking guide hole, and drives the insulating guard plate to complete the contraction and extension interlocking action through the transmission connecting rod and the protective connecting rod. An interlocking guide plate is installed on the interlocking side of the anti-misoperation interlocking base plate, a guard plate interlocking hole is provided on the interlocking guide plate, the guard plate interlocking hole and the interlocking stud are in sliding guide cooperation, mounting plates are provided on both sides of the anti-misoperation interlocking base plate, a one-way anti-misoperation hole and an interlocking sliding hole are provided on the mounting plate, the one-way anti-misoperation hole and the anti-misoperation positioning screw are in an insertion position combination, a sliding guide hole is provided at the side of the anti-misoperation interlocking base plate at a position corresponding to the interlocking sliding hole, the anti-misoperation interlocking base plate forms an action interlock with the hinge interlocking protection mechanism through the interlocking guide plate, and the guard plate interlocking hole of the interlocking guide plate drives the interlocking stud to realize the control of the interlocking protection action of the hinge interlocking protection mechanism. The sliding guide hole is combined with the closing interlocking mechanism.

[0014] Preferably, when the insulating guard plate is retracted, it is arranged on the inner side of the dynamic component connection hole of the static connection component module, so that the dynamic combination bolt of the dynamic connection component module can be inserted and connected to the static connection component module. After the insulating guard plate is extended, it covers the front end of the dynamic component connection hole of the static connection component module. The insulating guard plate completely covers the front end of the dynamic component connection hole of the static connection component module, which can effectively prevent the operator from accidentally touching the exposed copper busbar of the static connection component module, thereby improving the protection safety of the operation.

[0015] The weight of the insulating guard plate located below is greater than the weight of the insulating guard plate located above. By utilizing the effect of gravity, the insulating guard plate with greater weight below is pulled down so that the hinge interlocking protection mechanism can realize that the insulating guard plate automatically extends to both ends to cover the dynamic component connection holes of the static connection component module without interlocking control, thereby playing a protective role and further improving the safety of the operation.

[0016] Preferably, a connecting tenon is provided at the combined end of the interlocking guide plate, and the interlocking guide plate is fixedly combined on the interlocking combination side of the anti-misoperation interlocking base plate through the connecting tenon and the mortise and tenon holes of the anti-misoperation interlocking base plate.

[0017] Preferably, the closing interlock mechanism includes an interlock flap disposed outside the modular circuit breaker. An interlock jack is formed in the middle of the interlock flap. The closing and opening flap of the modular circuit breaker is sleeved into the interlock jack. When the closing and opening flap performs the closing and opening actions, it can drive the interlock flap to realize the closing and opening protection interlock. Sliding guide studs are installed on both sides of the interlock flap. The sliding guide studs and the sliding guide holes form a sliding guide combination. The sliding guide holes guide and limit the sliding stroke of the interlock flap. A double-headed screw is installed at the interlock end of the interlock flap. The double-headed screw passes through the interlock guide hole and is slidably installed in the limit calabash hole on the mounting base plate. The limit calabash hole has a structure with a wider insertion part at the lower end and a narrower sliding part at the upper end. The sliding part of the limit calabash hole is in sliding fit with the screw rod of the double-headed screw. When in the opening state, the double-headed screw of the interlock flap is inserted into the rear end of the mounting base plate from the insertion part at the lower end of the limit calabash hole. Then, when performing the closing action, the closing and opening flap drives the interlock flap to move upward along the interlock guide hole. The screw rod of the double-headed screw is inserted into the sliding part of the limit calabash hole and slides upward synchronously. The bolt head at the rear end of the double-headed screw is stuck outside the sliding part, so that the interlock flap defines the installation position of the modular circuit breaker and prevents the modular circuit breaker from being removed in the closing state.

[0018] Preferably, the aperture of the insertion part at the lower end of the limit calabash hole is larger than the diameter of the screw head of the double-headed screw, and the width of the sliding part at the upper end of the limit calabash hole is smaller than the diameter of the screw head of the double-headed screw. The interlock flap has a "U" - shaped structure and can be fitted and covered outside the modular circuit breaker to save space.

[0019] Preferably, the electromagnetic protection interlock mechanism includes a baffle, an electromagnetic lock and an electric control mechanism. The baffle is used to shield the operating part of the moving connection component module to achieve the protection effect of preventing the modular circuit breaker body from being disassembled in the closing state. The electric control mechanism is used to realize the electric control of the switch to perform the closing and opening actions of the modular circuit breaker. The electromagnetic lock and the baffle and the electric control mechanism realize the electric control interlock protection. A hanging plate hole is formed at the front end of the fixing plate. A buckle is provided on the inner side of the baffle of the electromagnetic protection interlock mechanism. The buckle is挂靠 installed in the hanging plate hole. An interlock pressing plate is provided at the lower end of the inner side of the baffle. The electromagnetic lock of the electromagnetic protection interlock mechanism is installed at the upper end of the lower fixing plate. The electromagnetic lock is connected to the modular circuit breaker. The locking tongue of the electromagnetic lock is fitted and pressed against the upper end of the interlock pressing plate. The electric control mechanism is installed on the operating end face of the modular circuit breaker. The baffle is hung on the fixing plate. The locking tongue of the electromagnetic lock is placed on the interlock pressing plate. When the electric control mechanism controls the modular circuit breaker to close and at the same time makes the connected electromagnetic lock energized, the locking tongue is pressed on the interlock pressing plate, so that the baffle is firmly installed on the fixing plate and cannot be removed in the closing state.

[0020] Preferably, the bolt head of the dynamic combination bolt of the dynamic connection component module is a four-corner bolt head, the outer surface of the four-corner bolt head is coated with insulating paint, and the connecting end of the insulating connector combined with the dynamic combination bolt is provided with a four-corner combination groove, the insulating connector is combined with the four-corner bolt head and installed on the dynamic combination bolt through the four-corner combination groove and drives the dynamic combination bolt to rotate, the operating end of the insulating connector is provided with an outer four-corner operating end, and the outer four-corner operating end extends out of the operating end of the dynamic connection component module, the four-corner bolt head of the dynamic combination bolt and the insulating connector are provided with a hexagonal unlocking hole, and the combined end of the four-corner bolt head and the insulating connector is provided with a transversely penetrating combination positioning hole, the combination positioning hole can help the installer accurately install the insulating connector on the dynamic combination bolt, so that the four-corner bolt head is aligned with the hexagonal unlocking hole of the insulating connector, and further, a combination pin can be installed in the combination positioning hole, so that the insulating connector and the dynamic combination bolt are firmly combined together, thereby improving the transmission stability of the rotation operation.

[0021] Preferably, the static connection component module, the hinge interlocking protection mechanism, the anti-misoperation interlocking base plate, the modular circuit breaker, the dynamic connection component module and the closing interlocking mechanism constitute a manual interlocking protection structure, and the static connection component module, the hinge interlocking protection mechanism, the anti-misoperation interlocking base plate, the modular circuit breaker, the dynamic connection component module and the electromagnetic protection interlocking mechanism constitute an electric control interlocking protection structure.

[0022] Preferably, the coupler quick-connect panel disposed on the mounting base plate is an inclined angle access structure, and the insertion end of the coupler quick-connect panel is tilted downward, which can effectively reduce the installation stress caused when the cable and the insertion end are connected and combined, and improve the connection safety and the protection effect of the insertion end. A flip-up protective cover is provided above the extended cable ear disposed on the mounting base plate, which can effectively protect the cable ear. When connection is required, it only needs to be flipped up. After the flip-up protective cover is flipped up, the cable ear can be bolted to the copper busbar overlap hole. When no connection is required, the flip-up protective cover can be covered to avoid accidents caused by accidental touch, and it can have both convenient operation and protective safety.

[0023] Compared with the prior art, the present invention has the following advantages: The low-voltage switch cabinet provided by the present invention adopts a protection mechanism composed of a universal low-voltage complete circuit breaker switch module device and a safety interlock protection structure of an adjustable adapter module device. On the basis of the universal low-voltage complete circuit breaker switch module, a matching safety protection interlock device is arranged to ensure the safety of operators and realize a user-friendly operating experience for operation and maintenance personnel.

[0024] The safety interlock protection structure provided by the present invention includes two interlock structures, a manual interlock protection structure and an electric control interlock protection structure. It can adapt to different installation and control requirements. The combined application of multiple interlock structures effectively prevents live plugging and unplugging operations in the closed state, greatly reduces the risks of arcing and electric shock, and protects the lives of operation and maintenance personnel.

[0025] The present invention installs a hinge interlocking protection mechanism on the installation base plate. The hinge protection interlocking structure composed of the hinge interlocking protection mechanism and the anti-misoperation interlocking base plate can prevent operators from accidentally touching the exposed copper busbar during operation, thereby realizing insulation interlocking protection during installation and maintenance, and providing effective safety protection for operators.

[0026] The present invention provides an anti-misoperation structure on the anti-misoperation interlocking base plate, and the design ensures the correct installation of the modular circuit breaker body and the dynamic connection component module, avoids the failure of the interlocking mechanism caused by installation errors, and ensures the normal operation of the power system.

[0027] The present invention improves the protruding end of the insulating connector of the dynamic connection component module into an outer four-corner operating end structure, which can withstand a higher operating torque, avoid damage or bursting of the insulating connector due to excessive torque during operation, ensure smooth maintenance and the safety of operators, reduce equipment damage caused by operating errors, extend the service life of the equipment, and reduce the overall cost. At the same time, the structural design of the hexagonal unlocking hole is provided inside the four-corner bolt head of the dynamic combination bolt of the dynamic connection component module and the insulating connector, so that when dealing with faults such as bursting of the insulating material of the switch body, there is no need to violently dismantle the entire switch base, saving maintenance time and labor costs.

[0028] The present invention has an inclined angle access structure for the coupler quick-connect panel on the mounting base plate, which can effectively reduce the installation stress caused by the cable connection and the insertion end when they are connected and combined, thereby improving the connection safety and the protection effect on the insertion end. The present invention also has a flip-up protective cover above the protruding cable ear arranged on the mounting base plate, which can effectively protect the cable ear. When connection is needed, it only needs to be flipped up. After the flip-up protective cover is flipped up, the cable ear can be locked on the copper busbar overlapping hole with bolts. When no connection is needed, covering the flip-up protective cover can prevent people from accidentally touching the live conductor in the cabinet, and can have both convenient operation and protective safety.

[0029] The present invention provides comprehensive safety protection for operation and maintenance personnel during installation and maintenance through the comprehensive effect of safety design measures of multi-layer interlocking structure, significantly reducing the safety risks in operation and maintenance operations. The interlocking protection design of the friendly low-voltage switch cabinet provided by the present invention is reasonable, compact, and easy to install. It can be applied to various fixed low-voltage cabinets, whether it is a new project or the renovation of an old low-voltage cabinet, it can be easily installed and used, and the various safety designs and functional optimizations of the present invention do not affect the normal performance and operation of the internal devices of the switch cabinet, and it has good compatibility with the existing power system and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 It is a schematic diagram of the exploded structure of the manual interlocking protection structure of the present invention.

[0032] Figure 3 It is a structural schematic diagram of the electromagnetic protection interlocking mechanism of the present invention.

[0033] Figure 4 It is a structural schematic diagram of the baffle of the present invention.

[0034] Figure 5 It is a structural schematic diagram of the electromagnetic lock of the present invention.

[0035] Figure 6 It is a schematic diagram of the combined interlocking of the electromagnetic protection interlocking mechanism of the present invention.

[0036] Figure 7 It is a structural schematic diagram of the hinge interlocking protection mechanism of the present invention.

[0037] Figure 8 It is a structural schematic diagram of the interlocking transmission side of the hinge interlocking protection mechanism of the present invention.

[0038] Fig. 9 It is a structural schematic diagram of the anti-misoperation interlocking base plate of the present invention.

[0039] Fig.10 It is a structural schematic diagram of the interlocking side of the anti-misoperation interlocking base plate of the present invention.

[0040] Fig.11 It is a schematic diagram of the combined interlocking of the anti-misoperation interlocking base plate and the hinge interlocking protection mechanism of the present invention.

[0041] Fig.12 It is a schematic diagram of the internal structure of the dynamic connection component module of the present invention.

[0042] Fig.13 It is a schematic diagram of the insulating connector structure of the present invention.

[0043] Fig.14 It is a schematic diagram of a modular circuit breaker pre-installed in a cabinet of the present invention.

[0044] Description of Figure Numbers: Static connection component module-1, hinge interlock protection mechanism-2, anti-misoperation interlock base plate-3, modular circuit breaker-4, dynamic connection component module-5, closing interlock mechanism-6, electromagnetic protection interlock mechanism-7, installation base plate-8, cover plate-21, rotating stud-22, rotating connecting rod-23, interlocking stud-24, interlocking guide hole-25, transmission connecting rod-26, protective connecting rod-27, insulating guard plate-28, anti-misoperation one-way card hole-31, interlocking sliding hole-32, sliding guide hole-33, interlocking guide plate-34, guard plate interlocking card hole-35, connecting tenon-36, mortise and tenon Hole-37, opening and closing paddle-41, electric control mechanism-42, dynamic combination bolt-51, four-corner bolt head-52, insulating connector-53, four-corner combination groove-54, outer four-corner operating end-55, inner hexagon unlocking hole-56, combination positioning hole-57, interlocking paddle-61, interlocking socket-62, sliding guide stud-63, stud screw-64, baffle-71, buckle-72, interlocking pressure plate-73, electromagnetic lock-74, lock tongue-75, anti-misoperation positioning screw-81, limit hoist hole-82, fixing plate-83, hanging plate hole-84, flip-up protective cover-85. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0046] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0047] The present invention is further described below with reference to specific embodiments and accompanying drawings: like Figures 1 to 14The structure diagram provided by the present invention is shown. Specifically, the present invention is a user-friendly low-voltage switch cabinet with a safety protection interlocking device, on which a static connection component module 1, a hinge interlocking protection mechanism 2, an anti-misoperation interlocking base plate 3, a modular circuit breaker 4, a dynamic connection component module 5, a closing interlocking mechanism 6, and an electromagnetic protection interlocking mechanism 7 are arranged on the installation base plate 8 of the cabinet body. The hinge interlocking protection mechanism 2 is used to block the exposed copper busbar of the static connection component module 1 through an interlocking action when the dynamic connection component module 5 is not installed or removed, so as to avoid accidents caused by accidental touch during operation.

[0048] Among them, the anti-misoperation interlock base plate 3 is used to install the modular circuit breaker 4 and combine the interlocking action with the hinge interlocking protection mechanism 2, the dynamic connection component module 5 is used to connect the modular circuit breaker 4 with the static connection component module 1 after the modular circuit breaker 4 is installed, the closing interlocking mechanism 6 is used to combine with the modular circuit breaker 4 to realize manual closing locking interlocking, and the electromagnetic protection interlocking mechanism 7 is used to combine with the modular circuit breaker 4 to realize the electric control closing locking interlocking protection.

[0049] Among them, the static connection component module 1 is fixedly set on the mounting base plate 8, the hinge interlocking protection mechanism 2 is installed on the assembly end surface of the mounting base plate 8, the modular circuit breaker 4 is installed on the anti-misoperation interlocking base plate 3, the anti-misoperation interlocking base plate 3 is combined with the anti-misoperation positioning screws 81 on the mounting base plate 8, the anti-misoperation interlocking base plate 3 and the hinge interlocking protection mechanism 2 are interlocked and combined with each other, the dynamic connection component module 5 is connected and combined with the static connection component module 1 and the modular circuit breaker 4, the closing interlocking mechanism 6 is combined and interlocked with the modular circuit breaker 4 and installed on the anti-misoperation interlocking base plate 3, the electromagnetic protection interlocking mechanism 7 is connected to the modular circuit breaker 4, and the electromagnetic protection interlocking mechanism 7 is installed on the fixed plate 83 of the mounting base plate 8.

[0050] Preferably, the hinge interlocking protection mechanism 2 includes a cover plate 21, which is installed on the mounting base plate 8, a rotating connecting rod 23 on the rotating stud 22 of the cover plate 21, and an interlocking stud 24 of the rotating connecting rod 23 can be slidably arranged in an interlocking guide hole 25 of the cover plate 21, and the interlocking guide hole 25 is inclined. Both ends of the rotating connecting rod 23 are rotatably connected to a transmission connecting rod 26, and one end of the transmission connecting rod 26 is rotatably connected to a protective connecting connecting rod 27, and an insulating protective plate 28 is installed on the protruding end of the protective connecting connecting rod 27. The rotating connecting rod 23 rotates around the rotating stud 22 as the center under the sliding cooperation between the interlocking stud 24 and the interlocking guide hole 25, and drives the insulating protective plate 28 through the transmission connecting rod 26 and the protective connecting connecting rod 27 to complete the contraction and extension interlocking action. An interlocking guide plate 34 is installed on the interlocking side of the anti-misoperation interlocking base plate 3, and a guard plate interlocking card hole 35 is opened on the interlocking guide plate 34. The guard plate interlocking card hole 35 and the interlocking stud 24 are in sliding guide cooperation. The anti-misoperation interlocking base plate 3 is provided with mounting plates on both sides. The anti-misoperation one-way card hole 31 and the interlocking sliding hole 32 are opened on the mounting plate. The anti-misoperation one-way card hole 31 and the anti-misoperation positioning screw 81 are in an insertion card position combination. The side of the anti-misoperation interlocking base plate 3 corresponding to the interlocking sliding hole 32 is provided with a sliding guide hole 33. The anti-misoperation interlocking base plate 3 forms an action interlock with the hinge interlocking protection mechanism 2 through the interlocking guide plate 34. The guard plate interlocking card hole 35 of the interlocking guide plate 34 drives the interlocking stud 24 to move to realize the control of the interlocking protection action of the hinge interlocking protection mechanism 2. The sliding guide hole 33 is combined with the closing interlocking mechanism 6.

[0051] Preferably, when the insulating guard plate 28 is retracted, it is arranged on the inner side of the dynamic component connection hole of the static connection component module 1, so that the dynamic combination bolt 51 of the dynamic connection component module 5 can be inserted and connected to the static connection component module 1. After the insulating guard plate 28 is extended, it covers the front end of the dynamic component connection hole of the static connection component module 1. The insulating guard plate 28 completely covers the front end of the dynamic component connection hole of the static connection component module 1, which can effectively prevent the operator from accidentally touching the exposed copper busbar of the static connection component module 1, thereby improving the protection safety of the operation.

[0052] The weight of the insulating guard plate 28 located below is greater than the weight of the insulating guard plate 28 located above. By utilizing the effect of gravity, the insulating guard plate 28 with greater weight below is pulled down so that the hinge interlocking protection mechanism 2 can realize that the insulating guard plate 28 automatically extends to both ends to cover the dynamic component connection holes of the static connection component module 1 without interlocking control, thereby playing a protective role and further improving the safety of the operation.

[0053] Preferably, a connecting tenon 36 is provided at the combined end of the interlocking guide plate 34. The interlocking guide plate 34 is fixedly combined with the mortise and tenon hole 37 of the anti-misoperation interlocking bottom plate 3 through the connecting tenon 36 on the interlocking combined side of the anti-misoperation interlocking bottom plate 3.

[0054] Preferably, the closing interlocking mechanism 6 includes an interlocking dial 61 arranged outside the modular circuit breaker 4. An interlocking jack 62 is opened in the middle of the interlocking dial 61. The closing and opening dial 41 of the modular circuit breaker 4 is sleeved into the interlocking jack 62. When the closing and opening dial 41 performs the closing and opening actions, it can drive the interlocking dial 61 to realize the closing and opening protection interlock.

[0055] Sliding guide studs 63 are installed on both sides of the interlocking dial 61. The sliding guide studs 63 and the sliding guide holes 33 are in a sliding guide combination. The sliding guide holes 33 guide and limit the sliding stroke of the interlocking dial 61. A double-headed screw 64 is installed at the interlocking end of the interlocking dial 61. The double-headed screw 64 passes through the interlocking guide hole 25 and is slidably installed in the limit calabash hole 82 on the mounting bottom plate 8. The limit calabash hole 82 has a structure with a wider insertion part at the lower end and a narrower sliding part at the upper end. The sliding part of the limit calabash hole 82 and the screw rod of the double-headed screw 64 are in sliding fit. When in the open state, the double-headed screw 64 of the interlocking dial 61 is inserted into the rear end of the mounting bottom plate 8 from the insertion part at the lower end of the limit calabash hole 82. Then, when performing the closing action, the closing and opening dial 41 drives the interlocking dial 61 to move upward along the interlocking guide hole 25. The screw rod of the double-headed screw 64 is stuck in the sliding part of the limit calabash hole 82 and slides upward synchronously. The bolt head at the rear end of the double-headed screw 64 is stuck outside the sliding part, so that the interlocking dial 61 limits the installation position of the modular circuit breaker 4 and prevents the modular circuit breaker 4 from being removed in the closed state.

[0056] Preferably, the aperture of the insertion part at the lower end of the limit calabash hole 82 is larger than the diameter of the screw head of the double-headed screw 64, and the width of the sliding part at the upper end of the limit calabash hole 82 is smaller than the diameter of the screw head of the double-headed screw 64. The interlocking dial 61 is of a "U" shape structure and can be attached and wrapped outside the modular circuit breaker 4 to save space.

[0057] Preferably, the electromagnetic protection interlocking mechanism 7 includes a baffle 71, an electromagnetic lock 74 and an electric control mechanism 42. The baffle 71 is used to shield the operating part of the movable connection component module 5, so as to achieve the protection effect that the modular circuit breaker 4 body cannot be disassembled in the closed state. The electric control mechanism 42 is used to realize the opening and closing actions of the electric control switch modular circuit breaker 4. The electromagnetic lock 74, the baffle 71 and the electric control mechanism 42 realize the electric control interlocking protection. A hanging plate hole 84 is opened at the front end of the fixed plate 83, and a buckle 72 is provided on the inner side of the baffle 71 of the electromagnetic protection interlocking mechanism 7. The buckle 72 is hung and installed in the hanging plate hole 84. An interlocking pressure plate 73 is provided at the inner lower end of the baffle 71. The electromagnetic lock 74 of the electromagnetic protection interlocking mechanism 7 is installed at the upper end of the fixed plate 83 below. The electromagnetic lock 74 is connected to the modular circuit breaker 4, and the lock tongue 75 of the electromagnetic lock 74 is pressed against the upper end of the interlocking pressure plate 73. The electric control mechanism 42 is installed on the operating end face of the modular circuit breaker 4. The baffle 71 is mounted on the fixed plate 83, and the lock tongue 75 of the electromagnetic lock 74 is placed on the interlocking pressure plate 73. The electric control mechanism 42 controls the modular circuit breaker 4 to close and simultaneously energizes the connected electromagnetic lock 74. The lock tongue 75 is pressed against the interlocking pressure plate 73, so that the baffle 71 is firmly mounted on the fixed plate 83, and the baffle 71 cannot be removed in the closed state.

[0058] Preferably, the bolt head of the dynamic combination bolt 51 of the dynamic connection component module 5 is a four-corner bolt head 52, the outer surface of the four-corner bolt head 52 is coated with insulating paint, and the connecting end of the insulating connection head 53 combined with the dynamic combination bolt 51 is provided with a four-corner combination groove 54, the insulating connection head 53 is combined with the four-corner bolt head 52 and installed on the dynamic combination bolt 51 through the four-corner combination groove 54 and drives the dynamic combination bolt 51 to rotate, and the operating end of the insulating connection head 53 is provided with an outer four-corner operating end 55, and the outer four-corner operating end 55 extends outward from the operating end of the dynamic connection component module 5. On the outside, the four-corner bolt head 52 of the dynamic combination bolt 51 and the insulating connector 53 are provided with a hexagonal unlocking hole 56, and the combined ends of the four-corner bolt head 52 and the insulating connector 53 are provided with a transversely penetrating combination positioning hole 57. The combination positioning hole 57 can help the installer to accurately install the insulating connector 53 on the dynamic combination bolt 51, so that the four-corner bolt head 52 is aligned with the hexagonal unlocking hole 56 of the insulating connector 53. Furthermore, a combination pin can be installed in the combination positioning hole 57 to firmly combine the insulating connector 53 with the dynamic combination bolt 51, thereby improving the transmission stability of the rotation operation.

[0059] Preferably, the static connection component module 1, the hinge interlocking protection mechanism 2, the anti-misoperation interlocking base plate 3, the modular circuit breaker 4, the dynamic connection component module 5 and the closing interlocking mechanism 6 constitute a manual interlocking protection structure, and the static connection component module 1, the hinge interlocking protection mechanism 2, the anti-misoperation interlocking base plate 3, the modular circuit breaker 4, the dynamic connection component module 5 and the electromagnetic protection interlocking mechanism 7 constitute an electric control interlocking protection structure.

[0060] Preferably, the coupler quick-connect panel disposed on the mounting base plate 8 is an inclined angle access structure, and the insertion end of the coupler quick-connect panel is tilted downward, which can effectively reduce the installation stress caused when the cable and the insertion end are connected and combined, and improve the connection safety and the protection effect of the insertion end. A flip-up protective cover 85 is provided above the extended cable ear disposed on the mounting base plate 8, which can effectively protect the cable ear. When connection is required, it only needs to be flipped up. After the flip-up protective cover 85 is flipped up, the cable ear can be bolted to the copper busbar overlap hole. When no connection is required, the flip-up protective cover 85 is covered to avoid accidents caused by accidental touch, and can have both convenient operation and protective safety.

[0061] First embodiment: During installation, the static connection component module 1 is installed on the connection installation position of the mounting base plate 8 of the cabinet, and the hinge interlocking protection mechanism 2 is installed on the mounting base plate 8 and arranged between the static connection component modules 1. The hinge interlocking protection mechanism 2 is in an extended state, and the insulating guard plates 28 at both ends cover the front end of the dynamic component connection hole of the static connection component module 1 to cover the connecting copper busbar.

[0062] The modular circuit breaker 4 is installed on the anti-misoperation interlocking base plate 3 according to the combination direction, and the anti-misoperation positioning screw 81 on the installation base plate 8 is inserted into the card position combination through the anti-misoperation one-way card hole 31, and the anti-misoperation interlocking base plate 3 is installed on the installation base plate 8. The installation interlock is realized by combining the interlocking guide plate 34 of the anti-misoperation interlocking base plate 3 with the interlocking stud 24 of the hinge interlocking protection mechanism 2, so that the insulating protective plates 28 at both ends are retracted to the inner side of the dynamic component connection hole of the static connection component module 1, and the dynamic component connection hole of the static connection component module 1 is exposed to a connectable combination state, and the dynamic connection component module 5 is installed on the modular circuit breaker 4 and combined with the static connection component module 1. The interlocking paddle 61 of the closing interlocking mechanism 6 is combined with the opening and closing paddle 41 of the modular circuit breaker 4 and then installed through the interlocking sliding hole 32 of the anti-misoperation interlocking base plate 3 and installed in the limiting gourd hole 82 of the installation base plate 8, and the installation of the closing interlocking mechanism 6 is completed. Next, the electromagnetic lock 74 is installed on the fixed plate 83, and the lock tongue 75 of the electromagnetic lock 74 is in an active state. Then, the buckle 72 is hung and installed in the hanging plate hole 84, the baffle 71 is installed on the fixed plate 83, and the lock tongue 75 is placed on the interlocking pressure plate 73. Then, the electric control mechanism 42 is installed on the operating end face of the modular circuit breaker 4 to complete the installation of the electromagnetic protection interlocking mechanism 7.

[0063] The modular circuit breaker 4 is closed, and the opening and closing paddle 41 drives the interlocking paddle 61 to move through the interlocking socket 62. The sliding guide stud 63 of the interlocking paddle 61 moves upward along the sliding guide hole 33. The stud screw 64 is inserted into the sliding part of the limit gourd hole 82, and the interlocking paddle 61 is stuck on the mounting base plate 8 to realize the manual closing protection interlock, so that the modular circuit breaker 4 cannot be disassembled in the closed state.

[0064] The electric control mechanism 42 controls the modular circuit breaker 4 to close the circuit, the electromagnetic lock 74 is energized, and the lock tongue 75 of the electromagnetic lock 74 is pressed on the interlocking pressure plate 73, so that the baffle 71 is firmly installed on the fixed plate 83, realizing the electric control closing protection interlock, and the baffle 71 cannot be removed in the closed state.

[0065] When it is necessary to check and maintain related operations, manually turn the opening and closing paddle 41 to convert the modular circuit breaker 4 to the opening state, drive the interlocking paddle 61 to move to the interlocking release position, and move the stud screw 64 from the sliding part at the upper end of the limiting hoist hole 82 to the insertion part at the lower end, pull the stud screw 64 out of the insertion part, and remove the interlocking paddle 61.

[0066] The electric control mechanism 42 controls the modular circuit breaker 4 to the open state, the electromagnetic lock 74 is powered off, the lock tongue 75 of the electromagnetic lock 74 releases the pressing interlock on the interlock pressure plate 73, and the operator takes the baffle 71 out of the fixing plate 83 in the reverse direction.

[0067] Continue to dismantle the dynamic connection component module 5, and pull the anti-misoperation interlocking base plate 3 with the modular circuit breaker 4 upward to pull the anti-misoperation one-way card hole 31 out of the anti-misoperation positioning screw 81, and at the same time, the guard plate interlocking card hole 35 of the interlocking guide plate 34 drives the interlocking stud 24 upward along the interlocking guide hole 25, and the rotating connecting rod 23 rotates, and the transmission connecting rod 26 links the protective connecting connecting rod 27 to extend to both ends, and the protective connecting connecting rod 27 makes the insulating guard plate 28 synchronously extend to the front end of the dynamic component connection hole of the static connection component module 1, and the dynamic component connection hole of the static connection component module 1 is covered to prevent the copper bar of the static connection component module 1 from being exposed, forming the protective interlock of the insulating guard plate 28. The operator can safely perform inspection and maintenance.

[0068] Second embodiment: This embodiment is similar to the first embodiment, except that the bolt head of the dynamic combination bolt 51 of the dynamic connection component module 5 in this embodiment is designed as a four-corner bolt head 52, the outer surface of the four-corner bolt head 52 is coated with insulating paint, and the connecting end of the insulating connection head 53 combined with the dynamic combination bolt 51 is provided with a four-corner combination groove 54. The insulating connection head 53 is combined with the four-corner bolt head 52 and installed on the dynamic combination bolt 51 through the four-corner combination groove 54 and drives the dynamic combination bolt 51 to rotate. The operating end of the insulating connection head 53 is provided with an outer four-corner operating end 55, and the outer four-corner operating end 55 extends outwardly outside the operating end of the dynamic connection component module 5, and the four-corner bolt head 52 of the dynamic combination bolt 51 and the insulating connection head 53 are provided with an inner hexagonal unlocking hole 56.

[0069] The outer four-corner operating end 55 allows the operator to withstand a higher operating torque when installing the dynamic connection component module 5, avoiding damage to the dynamic connection component module 5 during operation and ensuring the integrity of the operation. The combined ends of the four-corner bolt head 52 and the insulating connector 53 are both provided with a combined positioning hole 57. In an emergency, the operator can use an insulating hexagonal tool to insert the combined positioning hole 57 and combine it with the four-corner bolt head 52, and directly operate the four-corner bolt head 52 to rotate, so as to realize live emergency removal operations and ensure construction safety.

[0070] The combination positioning hole 57 can help the installer to accurately install the insulating connector 53 on the dynamic combination bolt 51, so that the four-corner bolt head 52 is aligned with the hexagonal unlocking hole 56 of the insulating connector 53. Furthermore, a combination pin can be installed in the combination positioning hole 57 to firmly combine the insulating connector 53 and the dynamic combination bolt 51 together, thereby improving the transmission stability of the rotation operation.

[0071] Third embodiment: This embodiment is similar to the aforementioned embodiment, except that in this embodiment, the coupler quick-connect panel disposed on the mounting base plate 8 is an inclined angle access structure, and the insertion end of the coupler quick-connect panel is tilted downward, so that when the operator connects the cable to the insertion end, the installation and insertion is more convenient, and the installation stress caused by the access combination can be effectively reduced.

[0072] In the present embodiment, a flip-up protective cover 85 is provided above the protruding cable lug arranged on the mounting base plate 8. When the operator is connecting the cable lug, he only needs to flip up the flip-up protective cover 85, and then he can bolt the cable lug to the copper busbar overlapping hole to complete the connection combination. After disconnecting, the flip-up protective cover 85 can protect the cable lug and avoid accidents caused by accidental touch.

[0073] Furthermore, the user-friendly low-voltage switchgear with a safety protection interlocking device of the present application can also connect the above-mentioned safety protection multi-interlocking device to the power supply on the power generation side through the busbar interface of the busbar clamp above the installation base plate 8.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A user-friendly low-voltage switchgear with a safety protection interlocking device, characterized in that: The invention comprises a cabinet body having a static connection component module (1), a hinge interlocking protection mechanism (2), an anti-misoperation interlocking base plate (3), a modular circuit breaker (4), a dynamic connection component module (5), a closing interlocking mechanism (6), and an electromagnetic protection interlocking mechanism (7) arranged on a cabinet body installation base plate (8), wherein the static connection component module (1) is fixedly arranged on the installation base plate (8), the hinge interlocking protection mechanism (2) is installed on the assembly end surface of the installation base plate (8), the modular circuit breaker (4) is installed on the anti-misoperation interlocking base plate (3), and the anti-misoperation interlocking base plate (3) is connected to the installation base plate ( The anti-misoperation interlocking base plate (3) and the hinge interlocking protection mechanism (2) are interlocked with each other, the dynamic connection component module (5) is connected and combined with the static connection component module (1) and the modular circuit breaker (4), the closing interlocking mechanism (6) is interlocked with the modular circuit breaker (4) and installed on the anti-misoperation interlocking base plate (3), the electromagnetic protection interlocking mechanism (7) is connected with the modular circuit breaker (4), and the electromagnetic protection interlocking mechanism (7) is installed on the fixing plate (83) of the mounting base plate (8).

2. A user-friendly low-voltage switchgear with a safety protection interlocking device according to claim 1, characterized in that: The hinge interlocking protection mechanism (2) comprises a cover plate (21), a rotating connecting rod (23) is mounted on a rotating stud (22) of the cover plate (21), an interlocking stud (24) of the rotating connecting rod (23) is slidably arranged in an interlocking guide hole (25) of the cover plate (21), the interlocking guide hole (25) is arranged obliquely, both ends of the rotating connecting rod (23) are rotatably connected to a transmission connecting rod (26), one end of the transmission connecting rod (26) is rotatably connected to a protection connecting connecting rod (27), an insulating protective plate (28) is mounted on the protruding end of the protection connecting connecting rod (27), and an interlocking stud (24) is mounted on the interlocking side of the anti-misoperation interlocking base plate (3). A guide plate (34), a guard plate interlocking hole (35) is formed on the interlocking guide plate (34), the guard plate interlocking hole (35) and the interlocking stud (24) are in sliding guide cooperation, mounting plates are provided on both sides of the anti-misoperation interlocking base plate (3), the mounting plates are provided with an anti-misoperation one-way hole (31) and an interlocking sliding hole (32), the anti-misoperation one-way hole (31) and the anti-misoperation positioning screw (81) are in an insertion position combination, and a sliding guide hole (33) is provided on the side of the anti-misoperation interlocking base plate (3) at a position corresponding to the interlocking sliding hole (32), and the sliding guide hole (33) is combined with the closing interlocking mechanism (6).

3. A user-friendly low-voltage switchgear with a safety protection interlocking device according to claim 2, characterized in that: The insulating protective plate (28) is arranged on the inner side of the moving component connection hole of the static connection component module (1) when it is retracted, and covers the front end of the moving component connection hole of the static connection component module (1) when it is extended, and the weight of the insulating protective plate (28) located at the bottom is greater than the weight of the insulating protective plate (28) located at the top.

4. A user-friendly low-voltage switchgear with a safety protection interlocking device according to claim 2, characterized in that: The combined end of the interlocking guide plate (34) is provided with a connecting tenon (36). The interlocking guide plate (34) is fixedly combined with the mortise and tenon hole (37) of the anti-misoperation interlocking bottom plate (3) through the connecting tenon (36) on the interlocking combination side of the anti-misoperation interlocking bottom plate (3).

5. A user-friendly low-voltage switchgear with a safety protection interlocking device according to claim 2, characterized in that: The closing interlocking mechanism (6) includes an interlocking flap (61) arranged outside the modular circuit breaker (4). An interlocking jack (62) is opened in the middle of the interlocking flap (61). The closing and opening flap (41) of the modular circuit breaker (4) is sleeved into the interlocking jack (62). Sliding guide studs (63) are installed on both sides of the interlocking flap (61). The sliding guide studs (63) and the sliding guide holes (33) are in a sliding guide combination. The sliding guide holes (33) guide and limit the sliding stroke of the interlocking flap (61). A double-headed screw (64) is installed at the interlocking end of the interlocking flap (61). The double-headed screw (64) passes through the interlocking guide hole (25) and is slidably installed in the limit calabash hole (82) on the mounting bottom plate (8). The limit calabash hole (82) has a structure with a wider insertion part at the lower end and a narrower sliding part at the upper end. The sliding part of the limit calabash hole (82) and the screw rod of the double-headed screw (64) are in sliding fit.

6. A user-friendly low-voltage switch cabinet with a safety protection interlocking device according to claim 5, characterized in that: The aperture of the lower insertion part of the limit calabash hole (82) is larger than the diameter of the screw head of the double-headed screw (64). The width of the upper sliding part of the limit calabash hole (82) is smaller than the diameter of the screw head of the double-headed screw (64). The interlocking flap (61) is of a "U" type structure.

7. A user-friendly low-voltage switchgear with a safety protection interlocking device according to any one of claims 1, 2 or 5, characterized in that: The electromagnetic protection interlocking mechanism (7) includes a baffle (71), an electromagnetic lock (74) and an electric control mechanism (42). A hanging plate hole (84) is opened at the front end of the fixing plate (83). A buckle (72) is arranged inside the baffle (71) of the electromagnetic protection interlocking mechanism (7). The buckle (72) is挂靠 installed in the hanging plate hole (84). An interlocking pressure plate (73) is arranged at the lower end inside the baffle (71). The electromagnetic lock (74) of the electromagnetic protection interlocking mechanism (7) is installed at the upper end of the lower fixing plate (83). The electromagnetic lock (74) is connected to the modular circuit breaker (4). The lock tongue (75) of the electromagnetic lock (74) is arranged in a fitting and pressing manner on the upper end of the interlocking pressure plate (73). The electric control mechanism (42) is installed on the operation end face of the modular circuit breaker (4).

8. A user-friendly low-voltage switchgear with a safety protection interlocking device according to claim 7, characterized in that: The bolt head of the dynamic assembly bolt (51) of the dynamic connection component module (5) is a four-corner bolt head (52), the outer surface of the four-corner bolt head (52) is coated with insulating paint, and the connecting end of the insulating connection head (53) combined with the dynamic assembly bolt (51) is provided with a four-corner combination groove (54). The insulating connection head (53) is installed on the dynamic assembly bolt (51) through the four-corner combination groove (54) and the four-corner bolt head (52) and drives the dynamic assembly bolt (51) to rotate. The operating end of the insulating connection head (53) is provided with an outer four-corner operating end (55), and the outer four-corner operating end (55) extends outwardly and is arranged outside the operating end of the dynamic connection component module (5). The combined ends of the four-corner bolt head (52) and the insulating connection head (53) are both provided with a transversely penetrating combined positioning hole (57), and the four-corner bolt head (52) of the dynamic assembly bolt (51) and the insulating connection head (53) are provided with an inner hexagonal unlocking hole (56).

9. A user-friendly low-voltage switch cabinet with a safety protection interlocking device according to claim 8, characterized in that: The static connection component module (1), the hinge interlocking protection mechanism (2), the anti-misoperation interlocking base plate (3), the modular circuit breaker (4), the dynamic connection component module (5) and the closing interlocking mechanism (6) constitute a manual interlocking protection structure, and the static connection component module (1), the hinge interlocking protection mechanism (2), the anti-misoperation interlocking base plate (3), the modular circuit breaker (4), the dynamic connection component module (5) and the electromagnetic protection interlocking mechanism (7) constitute an electric control interlocking protection structure.

10. A user-friendly low-voltage switch cabinet with a safety protection interlocking device according to claim 8, characterized in that: The coupler quick-connect panel disposed on the mounting base plate (8) is an inclined angle access structure, the insertion end of the coupler quick-connect panel is disposed in a downwardly inclined manner, and a flip-over protective cover (85) is disposed above the protruding cable ear disposed on the mounting base plate (8).

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