CN108306178B - Hot-plug low-voltage switchgear assembly - Google Patents

Hot-plug low-voltage switchgear assembly Download PDF

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Publication number
CN108306178B
CN108306178B CN201810243000.2A CN201810243000A CN108306178B CN 108306178 B CN108306178 B CN 108306178B CN 201810243000 A CN201810243000 A CN 201810243000A CN 108306178 B CN108306178 B CN 108306178B
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China
Prior art keywords
plug
plate
hot
hot plug
adapter
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CN201810243000.2A
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Chinese (zh)
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CN108306178A (en
Inventor
叶建川
叶春志
杨孝洪
林聪�
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Sichuan Haboat Electrical Co ltd
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Sichuan Haboat Electrical Co ltd
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Priority to CN201810243000.2A priority Critical patent/CN108306178B/en
Publication of CN108306178A publication Critical patent/CN108306178A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards

Abstract

The invention discloses a hot plug low-voltage complete switch device, and belongs to the technical field of low-voltage power distribution systems. The invention relates to hot plug low-voltage switchgear, which comprises a bottom plate, a bus system and a plurality of hot plug systems, wherein the bottom plate is connected with the bus system; the bus system comprises an insulating bracket and a plurality of bus bars arranged in the insulating bracket at intervals; the hot plug system comprises a base, a sliding plate, a switch element and an adapter, wherein the wire outlet end of the adapter is connected with the wire inlet end of the switch element, the adapter and the switch element are fixedly arranged on the sliding plate, and the sliding plate can be assembled on the base in a reciprocating manner; the hot plug system and the bus system are fixedly arranged on the bottom plate, and the plug end of the adapter is plugged into/pulled out of the bus bar through the reciprocating motion of the sliding plate on the base, so that the hot plug system is plugged into/pulled out of the bus system. The hot plug low-voltage switchgear can expand/modify the functional units under the condition of not cutting off the power supply entering the busbar so as to ensure the power supply continuity.

Description

Hot-plug low-voltage switchgear assembly
Technical Field
The invention relates to low-voltage complete switch equipment, in particular to hot plug low-voltage complete switch equipment, and belongs to the technical field of low-voltage power distribution systems.
Background
In the prior art, a busbar of a low-voltage switchgear assembly is connected with each functional unit through a feeding bus (the feeding bus is usually connected with the busbar in a bolt connection mode), and the low-voltage switchgear assembly is applied to a power distribution system to transmit power to the functional units. When the expansion/modification of the functional unit is required, the power supply to the busbar must be cut off, and the expansion/modification of the functional unit is possible. This results in other functional units that would otherwise be connected to the low voltage switchgear assembly being powered down, severely affecting the power continuity of the power distribution system.
It is therefore desirable to design a low-voltage switchgear assembly (i.e., a hot-plug low-voltage switchgear assembly) that can be extended/modified with respect to the functional units without cutting off the power to the busbar, so as to ensure power supply continuity.
Disclosure of Invention
The invention aims at: in order to solve the problems, the invention provides a hot plug low-voltage switchgear, which can realize the insertion/removal of a hot plug system into/from a bus system under the condition of not cutting off the power supply entering the bus, and can realize the expansion/modification of a functional unit under the condition of not cutting off the power supply entering the bus so as to ensure the power supply continuity.
The technical scheme adopted by the invention is as follows:
a hot plug low-voltage switchgear comprises a bottom plate, a bus system and a plurality of hot plug systems; the bus system comprises an insulating bracket and a plurality of bus bars arranged in the insulating bracket at intervals, wherein the bus bars are distributed in the length direction of the insulating bracket; the hot plug system comprises a base, a sliding plate, a switch element and an adapter for connecting the switch element with a busbar, wherein the wire outlet end of the adapter is connected with the wire inlet end of the switch element, the adapter and the switch element are fixedly arranged on the sliding plate, and the sliding plate can be assembled on the base in a reciprocating manner through a first guide mechanism; the hot plug system and the bus system are fixedly arranged on the bottom plate, the hot plug system is positioned at the lateral direction of the bus system, the plug end of the adapter faces the bus bar, and the plug end of the adapter is plugged into/pulled out of the bus bar through the reciprocating motion of the sliding plate on the base, so that the hot plug system is plugged into/pulled out of the bus system.
When the hot-plug low-voltage switchgear is adopted, the plugging end of the adapter can be plugged into/pulled out of the busbar through pushing/pulling the sliding plate (the sliding plate can also be directly pushed/pulled out of the element or the adapter) under the condition that the power supply entering the busbar is not cut off, namely, the hot-plug system can be plugged into/pulled out of the busbar. When the hot-plug low-voltage switchgear is applied to power transmission of a power distribution system to a functional unit, the outlet end of the switching element of the hot-plug system is connected with the functional unit through the feed bus, and the expansion/modification of the functional unit can be carried out under the condition that a power supply entering the bus is not cut off.
The invention relates to a hot plug low-voltage switchgear, which comprises a plug seat and a plurality of plugs assembled in the plug seat, wherein the plug ends of the plugs extend out of one side of the plug seat for being inserted into/pulled out of a busbar, and the outlet ends of the plugs extend out of the other side of the plug seat and are connected with inlet ends of a switch element. Alternatively, the plug base is fixedly connected with the sliding plate or/and the switch element. The plug end of the plug is the plug end of the adapter, and the outlet end of the plug is the outlet end of the adapter.
The invention relates to a hot plug low-voltage switchgear, which also comprises a push-pull rod, wherein the push-pull rod is connected to the side part of a sliding plate through a connecting piece, the push-pull rod can swing on the connecting piece, a clamping interface is arranged at the tail end of the push-pull rod, a clamping shaft corresponding to the clamping interface is fixedly arranged on the side part of a base, the clamping interface is clamped on the clamping shaft, and the sliding plate can do reciprocating motion on the base through swinging the push-pull rod. The sliding plate is driven by pushing/pulling the push-pull rod, and the plug-in end of the linkage adapter is inserted into/pulled out of the busbar. The design of the push-pull rod is convenient for realizing the reciprocating motion of the sliding plate on the base, so that the invention is more convenient to use and safer and more reliable.
Further, a limiting rod is arranged on the push-pull rod, the limiting rod is located between the opening and closing handle and the wire inlet end of the switching element, and when the opening and closing handle is close to the limiting rod, the top of the opening and closing handle is higher than the opening and closing handle of the switching element at the bottom of the limiting rod, and the opening and closing handle is used for enabling the switching element to open or close. The design aims to avoid the situation that a hot plug system is plugged into or pulled out of a bus system when a switching element is in a switching-on state; when the design is adopted, the plugging end of the adapter is plugged into or pulled out of the busbar, and the situation that the switching element is in a closing state cannot occur, so that the invention is safer and more reliable. The principle is as follows: when the hot plug system is in a state of being separated from the bus system, the limiting rod limits (interferes) the movement of the switching-on and switching-off handle, so that the switching element cannot be switched on, and the switching element is in a switching-off state when the hot plug system is inserted into the bus system (pushing the push-pull rod to enable the plug-in end of the adapter to be inserted into the bus bar). When the hot plug system is in a state of being connected with the bus system and the switch element is in a switching-off state, the hot plug system is allowed to be pulled out of the bus system; when the switching element is in a closing state, if the hot plug system is required to be pulled out of the bus system (the push-pull rod is pulled, so that the plug-in end of the adapter is pulled out of the bus bar), at this time, under the action of the limiting rod, the condition that the limiting rod pulls (interferes) the switching-on/off handle occurs, so that the switching element becomes in a switching-off state, and the switching element is ensured to be in a switching-off state when the hot plug system is pulled out of the bus system. That is, the design makes the switching element always in the off state when the hot plug system is plugged into or pulled out from the bus system, and the switching element is not in the on state.
Further, a first lock hole is formed in the push-pull rod, a locking plate is arranged on the side portion of the sliding plate, a second lock hole corresponding to the first lock hole is formed in the locking plate, and when the hot plug system is pulled out of the bus system, a locking piece is inserted into the first lock hole and the second lock hole to lock the push-pull rod. The design aims to avoid the occurrence of false power transmission, so that the invention is safer and more reliable. For example, when the hot plug low voltage switchgear of the present invention is applied to a power distribution system to supply power to a functional unit, if the functional unit connected to the hot plug system is to be overhauled, for safety reasons, the hot plug system is usually required to be pulled away from the bus system, and in order to avoid accidents caused by that another person mistakenly inserts the hot plug system into the bus system, due to the design, the push-pull rod is locked by the locking piece, so that another person realizes that the hot plug system cannot be inserted into the bus system to electrify. In order to further improve the safety and avoid accidents, the locking piece is preferably a lock (such as a padlock and a chain lock), so that the safety is convenient to use and good, and at the moment, only the holder side of the key of the lock can take off the lock; of course, the locking element may also be a pin or bolt or the like.
The invention relates to a hot-plug low-voltage switchgear, which also comprises a wiring device, wherein the wiring device comprises a wiring box and a conductive strip assembled in the wiring box, a flexible conductive strip is formed by connecting a wire inlet end and a wire outlet end of the conductive strip through a plurality of layers of conductive sheets, the wire inlet end of the conductive strip is connected with the wire outlet end of a switch element, a connecting section between the wire outlet end of the conductive strip and the conductive sheet is fixedly arranged in the wiring box, and the wiring box is fixedly arranged on a base or/and a bottom plate. When the hot plug low-voltage switchgear is applied to a power distribution system to transmit power to a functional unit, the design enables the hot plug low-voltage switchgear to be more convenient to use. The design of the wiring device is not required, and at this time, the outlet end of the switching element of the hot plug system is connected with the functional unit through the feeding bus (generally rigid conductive branch line), and if the hot plug system connected with the functional unit needs to be pulled out of the bus system, the feeding bus needs to be pulled out of the outlet end of the switching element, so that the hot plug system can be pulled out of the bus system smoothly. When the wiring device is adopted, the design of the flexible conductive bars is benefited, the conductive sheets can be bent and straightened, a movement space is reserved for the sliding plate, and the feeding bus does not need to be withdrawn from the outlet end of the switch element; the invention is more convenient to use. Obviously, the wiring device is matched with the switch element; at this time, the outlet end of the wiring device is connected to the functional unit through the feeding bus. Preferably, the junction box is fixedly arranged on the base.
The invention relates to a hot-plug low-voltage complete switch device, which also comprises an interlocking plate, wherein a through hole and a first window are formed in the interlocking plate, the interlocking plate is arranged on a switch element, the through hole corresponds to an outgoing line end of the switch element, a split handle of the switch element passes through the first window, and the interlocking plate can reciprocate on the switch element by pulling the split handle so as to realize opposite/staggered arrangement of the through hole and the outgoing line end of the switch element. When the switching-on and switching-off handle is pulled to enable the switching element to be in a switching-off state, the interlocking plate is linked to enable the through hole to be opposite to the outlet end of the switching element; when the switching-on and switching-off handle is pulled to enable the switching element to be in a switching-on state, the linkage interlocking plate enables the through hole and the outlet end of the switching element to be staggered. The design aims at that when the switching element is in a closing state, the wire outlet end of the switching element cannot be operated, so that the invention is safer and more reliable. When the hot-plug low-voltage complete switch equipment is applied to a power distribution system to transmit power to a functional unit, the outlet end of a switch element of the hot-plug system is connected with the functional unit through a feed bus, and when the switch element is in a closing state, the through hole is staggered with the outlet end of the switch element, so that the outlet end of the switch element is difficult to operate, namely the feed bus is difficult to detach from the outlet end of the switch element; and only when the switching element is in the opening state, the through hole is opposite to the outlet end of the switching element, so that the outlet end of the switching element can be operated smoothly, namely, the feeding bus can be detached from the outlet end of the switching element. Similarly, when the feeder bus is to be connected to the outlet of the switching element, the outlet of the switching element needs to be operated when the switching element is in the off state, so as to achieve the connection relationship.
Further, the hot plug system further comprises a limiting plate, a second window corresponding to the first window is formed in the limiting plate, the limiting plate is fixedly arranged on the switch element, and the split handle of the switch element, which is movably arranged between the limiting plate and the switch element, passes through the second window. The interlocking plate can be prevented from falling off the switch element, so that the interlocking plate is more reliable.
The invention relates to a hot-plug low-voltage switchgear assembly, which is characterized in that the bus system also comprises a valve device matched with an adapter, wherein the valve device comprises an inner grating plate with a plurality of inner sockets and an outer grating plate with a plurality of outer sockets, and the inner grating plate can be embedded into the outer grating plate in a reciprocating manner through a second guide mechanism; the inner inserting hole and the outer inserting hole are mutually corresponding, the inner inserting hole and the outer inserting hole are opposite to each other or are shielded by the inner grating plate in a reciprocating mode in the outer grating plate, the inserting hole is opened when the inner inserting hole is opposite to the outer inserting hole, the inserting hole is closed when the inner inserting hole is shielded by the outer inserting hole, the end portion of the inner grating plate faces to the outer grating plate, the inclined portion of the inner grating plate is provided with an inclined portion, the inclined portion faces to the outer grating plate, and an elastic element for enabling the inserting hole to be closed is connected between the end portion of the inner grating plate and the outer grating plate; the valve devices are assembled on two side surfaces of the insulating support, the adapter is provided with cutting corresponding to the inclined part, the cutting is inserted to the inclined part from the cutting hole, so that the inserting port is opened, the inserting end of the adapter is inserted into the busbar, and after the cutting is pulled out from the cutting hole, the inserting port is closed under the action of the elastic element. When the design is adopted, the plug-in port of the adapter is opened under the action of the cutting when the plug-in end of the adapter is plugged into the busbar, so that the hot plug-in system is plugged into the busbar system. After the hot plug system is pulled out of the bus system, the plug-in port is closed under the action of the elastic element because the plug-in strip is not used. So that the busbar without the hot plug system is shielded by the valve device, and the two side parts of the busbar are not exposed to the two side surfaces of the insulating bracket, and the protection level of the IP40 can be achieved (preventing the invasion of objects with the diameter of more than 1.0mm and preventing the invasion of mosquitoes, flies, insects or objects with the diameter of more than 1.0 mm). The invention is safer and more reliable.
According to the hot-plug low-voltage switchgear, the insulating support is internally provided with the plurality of partition boards which are arranged at intervals, the partition boards are distributed in the height direction of the insulating support, the busbar penetrates through each partition board, and the partition boards are flame-retardant partition boards. When a bus system generates a fault arc, the fault arc can be effectively prevented from spreading, so that the invention is safer and more reliable.
According to the hot plug low-voltage switchgear, a plurality of hot plug systems are simultaneously distributed on the same side of a bus system or respectively distributed on two sides of the bus system. I.e. the bus bar system can be a single-sided or double-sided expansion hot plug system.
The invention relates to hot plug low-voltage switchgear, which also comprises a cabinet body, wherein a bottom plate is fixedly arranged in the cabinet body.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. the hot plug low-voltage switchgear is convenient to use, safe and reliable, can realize the insertion/extraction of the hot plug system into/from the bus system under the condition of not cutting off the power supply entering the bus, and can realize the expansion/modification of the functional unit under the condition of not cutting off the power supply entering the bus so as to ensure the power supply continuity.
2. The design of the push-pull rod is convenient for realizing the reciprocating motion of the sliding plate on the base, so that the invention is more convenient to use and safer and more reliable.
3. The limit rod of the push-pull rod is designed, so that the situation that the hot plug system is inserted into or pulled out of the bus system when the switch element is in a closing state can be avoided, and the invention is safer and more reliable.
4. The locking parts of the push-pull rod lock the push-pull rod, so that the situation of false power transmission can be avoided, and the invention is safer and more reliable.
5. The design of the wiring device can realize that the hot plug system is pulled out of the bus system without removing a feed bus connected with the hot plug system, so that the invention is more convenient to use.
6. The design of the valve device ensures that the busbar is not exposed to the two side surfaces of the busbar system under the condition that the hot plug system is not inserted in the lateral direction of the busbar system, and can reach the protection level of the IP40, so that the invention is safer and more reliable.
7. The flame-retardant partition board is designed, so that when a bus system generates a fault arc, the fault arc can be effectively prevented from spreading, and the invention is safer and more reliable.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
FIG. 1 is a front view of a hot plug low voltage switchgear assembly;
FIG. 2 is a schematic diagram of a hot-swappable low-voltage switchgear assembly (cabinet omitted);
FIG. 3 is a schematic diagram of the hot plug system after it has been inserted into the bus bar system (the switching element is in the closed state);
FIG. 4 is a schematic diagram of the hot plug system after the hot plug system is disconnected from the bus bar system (the switching element is in the off state);
FIG. 5 is a schematic structural view of a bus bar system;
FIG. 6 is a side schematic view of a bus bar system;
FIG. 7 is a left side view of FIG. 6;
FIG. 8 is a front view of the shutter device;
FIG. 9 is a rear view of FIG. 8;
FIG. 10 is a schematic structural view of a first view of the shutter device;
FIG. 11 is a schematic structural view of a second view of the shutter device;
FIG. 12 is a schematic view of the structure of the inner grid plate;
FIG. 13 is a schematic view of the structure of the outer grid plate;
FIG. 14 is a schematic view of a hot plug system including a wiring device but not including interlocking plates, locking members;
FIG. 15 is a schematic view of a hot plug system that does not include a wiring device, but includes an interlock plate, a locking member;
FIG. 16 is a schematic diagram of a hot plug system including both wiring devices and interlock plates, locks;
FIG. 17 is a front view of FIG. 16;
FIG. 18 is a top view of FIG. 16;
FIG. 19 is a schematic view of the base, slide plate, push-pull rod and locking member of FIG. 16 in combination;
FIG. 20 is a schematic view of the base, slide plate, push-pull rod and locking member of FIG. 16 shown in a disassembled configuration;
FIG. 21 is a schematic view of the interlock plate and stop plate of FIG. 16;
FIG. 22 is a schematic view of the structure of the adapter from a first perspective;
FIG. 23 is a schematic view of a second view of an adapter;
fig. 24 is a schematic view of the structure in which the conductor bars are fitted into the junction box.
The marks in the figure: 1-backplane, 2-bus bar system, 21-insulating rack, 22-bus bar, 23-shutter device, 231-inner grid, 2311-inner socket, 2312-angled section, 2313-second rail, 232-outer grid, 2321-outer socket, 2322-blade hole, 2323-second rail, 233-resilient member, 24-spacer, 3-hot-plug system, 31-base, 311-snap-in shaft, 312-first rail, 32-slide plate, 321-first rail, 322-lock tab, 323-second lock aperture, 33-switch element, 331-split handle, 34-adapter, 341-plug receptacle, 3411-blade, 342-plug, 35-push-pull rod, 351-snap-in interface, 352-stop rod, 353-connector, 354-first lock aperture, 355-lock, 36-wire device, 361-junction box, 362-conductor bar, 3621-conductor tab, 37-interlock plate, 371-through aperture, 372-first window, 38-second window, 381-body, 4-stop window.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
As shown in fig. 1 to 24, a hot plug low voltage switchgear of the present embodiment includes a base plate 1, a bus bar system 2, and a plurality of hot plug systems 3; the bus system 2 comprises an insulating bracket 21 and a plurality of bus bars 22 arranged in the insulating bracket 21 at intervals, wherein the bus bars 22 are distributed in the length direction of the insulating bracket 21; the hot plug system 3 comprises a base 31, a sliding plate 32, a switch element 33 and an adapter 34 for connecting the switch element 33 with the busbar 22, wherein the outlet end of the adapter 34 is connected with the inlet end of the switch element 33, the adapter 34 and the switch element 33 are fixedly arranged on the sliding plate 32, and the sliding plate 32 can be assembled on the base 31 in a reciprocating manner through a first guide mechanism; the hot plug system 3 and the bus bar system 2 are fixedly arranged on the bottom plate 1, the hot plug system 3 is positioned at the lateral direction of the bus bar system 2, the plug-in end of the adapter 34 faces the bus bar 22, and the plug-in end of the adapter 34 is plugged into/pulled out of the bus bar 22 through the reciprocating motion of the sliding plate 32 on the base 31, so that the hot plug system 3 is plugged into/pulled out of the bus bar system 2.
When the hot-plug low-voltage switchgear is adopted, the plugging end of the adapter 34 can be plugged into/pulled out of the busbar 22 by pushing/pulling the sliding plate 32 (the switching element 33 or the adapter 34 can be directly pushed/pulled out) under the condition that the power supply of the busbar 22 entering the busbar system 2 is not cut off, namely, the hot-plug system 3 can be plugged into/pulled out of the busbar system 2. When the hot-plug low-voltage switchgear is applied to power transmission of a power distribution system to a functional unit, the outlet end of the switching element 33 of the hot-plug system is connected with the functional unit through the feed bus, so that the expansion/modification of the functional unit can be realized under the condition that a power supply entering a busbar is not cut off. Obviously, the bus bar system 2 is a side-plug type bus bar system; the adapter 34 is provided with a wire inlet end and a wire outlet end, and the wire inlet end of the adapter 34 is a plug-in end; the switching element 33 has an inlet terminal and an outlet terminal. Alternatively, the busbar 22 has 4 (three-phase four-wire system) busbars, namely an a-phase busbar, a B-phase busbar, a C-phase busbar and an N-phase busbar; of course, the busbar 22 may also have 1, 2, 3 or more pieces. Alternatively, the busbar 22 is made of conductive material such as copper, aluminum or copper-aluminum composite. Alternatively, the switching element 33 is a multipole switch such as a single pole or a double pole, a triple pole, a quadrupole, or the like (obviously, the adapter 34 is correspondingly matched with the switching element 33, i.e., the adapter 34 is a multipole adapter such as a single pole or a double pole, a triple pole, a quadrupole, or the like). Alternatively, the switching element 33 is a circuit breaker, but may be any other switching element capable of opening/closing a circuit. The single pole switch means that the wiring terminal and the wire outlet terminal of the switching element have only 1 wiring pile respectively, and the diode switch means that the wiring terminal and the wire outlet terminal of the switching element have 2 wiring piles … … respectively.
Further, as shown in fig. 19 and 20, the first guiding mechanism includes a first guiding groove 312 disposed on the inner side of the base 31, and first guiding rails 321 disposed on two sides of the sliding plate 32, where the first guiding rails 321 are slidably assembled in the first guiding groove 312, so as to realize the reciprocating assembly of the sliding plate 32 on the base 31. In one embodiment, the first guide rail 321 has a cylindrical shape, and two sides of the sliding plate 32 are respectively provided with 2 cylindrical first guide rails 321.
Based on a further optimization of this embodiment, as shown in fig. 14 to 18, 22 and 23, in another embodiment, the adapter 34 includes a plug 341 and a plurality of plugs 342 assembled in the plug 341, where a plug end of the plug 342 extends out of one side of the plug 341 for inserting/extracting the busbar 22, and a wire outlet end of the plug 342 extends out of the other side of the plug 341 and is connected to a wire inlet end of the switching element 33. Alternatively, the plug 341 is fixedly connected to the sliding plate 32 and/or the switching element 33. Preferably, the plug seat 341 is fixedly arranged on the sliding plate 32; of course, the plug 341 may be fixed on the switch element 33, or the plug 341 may be fixed on both the sliding plate 32 and the switch element 33. Obviously, the number of the plugs 342 is not greater than the number of the busbar 22 (for example, when the number of the busbar 22 is 4, the number of the plugs 342 is 2, 3 or 4), and when the plugging ends of the connectors 34 are plugged into the busbar 22, it is obvious that different plugs 342 are contacted with different busbars 22. The plug end (incoming end) of the plug 342 is the plug end (incoming end) of the adapter 34, and the outgoing end of the plug 342 is the outgoing end of the adapter 34. Alternatively, the plug ends of the plugs 342 are resilient clips in pairs to facilitate insertion of the plug ends of the plugs 342 into the clamping busbar 22. Of course, it is also possible to: the adapter 34 is directly a plug 342 without including a plug receptacle 341. Alternatively, there are a plurality of plugs 342, and the plug 342 has a plug end with a different row extending from one side of the plug socket 341 for inserting/extracting the busbar 22.
Based on the further optimization of this embodiment, as shown in fig. 3, 4, and 14 to 20, in another embodiment, the hot plug system 3 further includes a push-pull rod 35, the push-pull rod 35 is connected to a side portion of the sliding plate 32 through a connecting piece 353, the push-pull rod 35 can swing on the connecting piece 353, a clamping interface 351 is provided at an end of the push-pull rod 35, a clamping shaft 311 corresponding to the clamping interface 351 is fixedly provided at a side portion of the base 31, the clamping interface 351 is clamped on the clamping shaft 311, and the sliding plate 32 performs a reciprocating motion on the base 31 by swinging the push-pull rod 35. The sliding plate 32 and the plugging end of the linkage adapter 34 are driven to be plugged into/pulled out of the busbar 22 by pushing/pulling the push-pull rod 35. The design of the push-pull rod 35 is convenient for realizing the reciprocating motion of the sliding plate 32 on the base 31, so that the invention is more convenient to use and safer and more reliable. Alternatively, the connection member 353 is a screw, and the contact between the screw and the push-pull rod 35 is a polished rod (i.e. no thread); the connection 353 may also be a pin or the like. Alternatively, the push-pull rod 35 is in a U shape, two opposite sides of the U-shaped push-pull rod 35 are connected to the side parts of the sliding plate 32 through the connecting piece 353, and the clamping interface 351 is arranged at the tail ends of the two opposite sides; of course, the push-pull rod 35 may also be L-shaped or elongated. Alternatively, the card interface 351 is U-shaped; of course, the card interface 351 may also be a waist-shaped hole.
Further, as shown in fig. 3, 4, and 14 to 20, in another embodiment, a limit lever 352 is disposed on the push-pull rod 35, the limit lever 352 is located between the opening and closing handle 331 of the switch element 33 and the wire inlet end, and when the opening and closing handle 331 is close to the limit lever 352, the top of the opening and closing handle 331 is higher than the bottom of the limit lever 352. Obviously, the switching element 33 has a switching handle 331, and the switching handle 331 of the switching element 33 is used for switching the switching element 33 on/off. The purpose of the design is to avoid the situation that the hot plug system 3 is plugged into or pulled out from the bus system 2 when the switch element 33 is in a closing state; that is, when the design is adopted, the plugging end of the adapter 34 is plugged into or pulled out from the busbar 22, and the situation that the switching element 33 is in a closing state cannot occur, so that the invention is safer and more reliable. The principle is as follows: in the state in which the hot plug system 3 is separated from the bus bar system 2, the movement of the opening/closing handle 331 is restricted (interfered) by the limit lever 352, so that the switching element 33 cannot be closed, which ensures that the switching element 33 is in the opening state when the hot plug system 3 is inserted into the bus bar system 2 (pushing the push-pull lever 35 to insert the insertion end of the adapter 34 into the bus bar 22). In a state in which the hot plug system 3 is connected to the bus bar system 2, when the switching element 33 is in the off state, the plug system 3 is allowed to be pulled out of the bus bar system 2; when the switching element 33 is in the on state, if the hot plug system 3 is to be pulled out of the bus bar system 2 (the push-pull rod 35 is pulled to pull the plug end of the adapter 34 out of the bus bar 22), the limit lever 352 is pulled (interfered) to open the handle 331 under the action of the limit lever 352, so that the switching element 33 is in the off state, which ensures that the switching element 33 is in the off state when the hot plug system 3 is pulled out of the bus bar system 2. That is, the present design makes the switching element 33 always in the off state when the hot plug system 3 is plugged into or pulled out from the bus bar system 2, without the switching element 33 being in the on state.
Further, as shown in fig. 15 to 20, in another embodiment, a first lock hole 354 is formed on the push-pull rod 35, a lock piece 322 is disposed on a side portion of the sliding plate 32, a second lock hole 323 corresponding to the first lock hole 354 is formed on the lock piece 322, and when the hot plug system 3 is pulled out from the bus bar system 2, a locking piece 355 is inserted into the first lock hole 354 and the second lock hole 323 to lock the push-pull rod 35. The design aims to avoid the occurrence of false power transmission, so that the invention is safer and more reliable. When the hot plug low voltage switchgear of the present invention is applied to a power distribution system for supplying power to a functional unit, if the functional unit connected to the hot plug system is to be overhauled, for safety reasons, it is generally required to pull the hot plug system 3 away from the bus bar system 2, and in order to avoid accidents caused by the fact that another person mistakenly inserts the hot plug system 3 into the bus bar system 2, thanks to the present design, the push-pull rod 35 is locked by the locking member 355, so that another person realizes that the hot plug system 3 cannot be inserted into the bus bar system 2 for supplying power. In order to further improve the safety and avoid accidents, the locking piece 355 is preferably a lock (such as padlock and chain lock), which is convenient to use and has good safety, and only the holder of the key of the lock can take off the lock; of course, the locking member 355 may also be a pin or bolt, or the like. Of course, the push-pull rod 35 may also be locked by the locking member 355 after the hot plug system 3 is inserted into the bus bar system 2. Alternatively, the locking piece 322 is mounted to the side of the sliding plate 32 by bolts or rivets; or locking tab 322 is integrally formed with slide plate 32.
According to a further optimization of this embodiment, as shown in fig. 3, 4, 14, 16 to 18 and 24, in another embodiment, the hot plug system 3 further includes a wiring device 36, where the wiring device 36 includes a junction box 361 and a conductive strip 362 assembled in the junction box 361, a flexible conductive strip 362 is formed by connecting a wire inlet end and a wire outlet end of the conductive strip 362 through multiple layers of conductive strips 3621, the wire inlet end of the conductive strip 362 is connected with the wire outlet end of the switching element 33, a connection section between the wire outlet end of the conductive strip 362 and the conductive strips 3621 is fixed in the junction box 361, and the junction box 361 is fixed on the base 31 or/and the bottom plate 1. When the hot plug low-voltage switchgear is applied to a power distribution system to transmit power to a functional unit, the design enables the hot plug low-voltage switchgear to be more convenient to use. It is of course also possible to dispense with the design of the wiring device 36, in which case the outlet of the switching element 33 of the hot plug system 3 is connected to the functional unit via a supply bus (typically a rigid conductive branch), and if the hot plug system 3 connected to the functional unit is to be pulled out of the bus system 2, the supply bus is to be pulled out of the outlet of the switching element 33, so that the hot plug system 3 can be pulled out of the bus system 2 smoothly. When the wiring device 36 of the present design is adopted, the conductive sheet 3621 can be bent and straightened due to the design of the flexible conductive bar 362, so that a movement space is reserved for the sliding plate 32, and the feeding bus does not need to be withdrawn from the outlet end of the switch element 33; the invention is more convenient to use. Obviously, the connection device 36 is adapted to the switching element 33; at this time, the outlet end of the wiring device 36 is connected to the functional unit via the feeder bus. Preferably, the junction box 361 is fixed on the base 31. Of course, if the feeder bus bar is flexible, the design of the wiring device 36 may or may not be employed.
Based on the further optimization of this embodiment, as shown in fig. 15 to 18 and 21, in another embodiment, the hot plug system 3 further includes an interlocking plate 37, the interlocking plate 37 is provided with a through hole 371 and a first window 372, the interlocking plate 37 is placed on the switch element 33, the through hole 371 corresponds to the outlet end of the switch element 33, the opening/closing handle 331 of the switch element 33 passes through the first window 372, and by pulling the opening/closing handle 331, the interlocking plate 37 can reciprocate on the switch element 33, so that the through hole 371 is opposite to/staggered with the outlet end of the switch element 33. When the opening and closing handle 331 is pulled to enable the switch element 33 to be in an opening and closing state, the linkage interlocking plate 37 enables the through hole 371 to be opposite to the wire outlet end of the switch element 33; when the opening/closing handle 331 is pulled to close the switching element 33, the interlocking plate 37 is interlocked to shift the through hole 371 from the outlet end of the switching element 33. Obviously, the first window 372 is adapted to the split handle 331 of the switching element 33. The purpose of this design is that the outlet end of the switching element 33 will not be operated when the switching element 33 is in the closed state, making the invention safer and more reliable. When the hot-plug low-voltage switchgear of the present invention is applied to a power distribution system for supplying power to a functional unit, the outlet terminal of the switching element 33 of the hot-plug system 3 is connected to the functional unit through a feeding bus, and when the switching element 33 is in a closed state, the through hole 371 is staggered with the outlet terminal of the switching element 33, so that it is difficult to operate the outlet terminal of the switching element 33, that is, it is difficult to detach the feeding bus from the outlet terminal of the switching element 33; only when the switching element 33 is in the off state, the through hole 371 is opposite to the outlet end of the switching element 33, so that the outlet end of the switching element 33 can be operated smoothly, i.e. the feeding bus bar can be removed from the outlet end of the switching element 33. Similarly, when the feeder bus is connected to the outlet of the switching element 33, the outlet of the switching element 33 needs to be operated when the switching element 33 is in the off state, so that the connection relationship is achieved. When combined with the design of the wiring device 36 (in this case, the wire inlet end of the conductive bar 362 is used to connect with the wire outlet end of the switching element 33, and the wire outlet end of the conductive bar 362 is used to connect with the feeder bus), it is also necessary to connect the wire inlet end of the conductive bar 362 to the wire outlet end of the switching element 33 or remove the wire inlet end of the conductive bar 362 from the wire outlet end of the switching element 33 when the switching element 33 is in the off state.
Further, as shown in fig. 15 to 18 and 21, in another embodiment, the hot plug system 3 further includes a limiting plate 38, a second window 381 corresponding to the first window 372 is formed on the limiting plate 38, the limiting plate 38 is fixedly disposed on the switch element 33, and the separating and combining handle 331 of the switch element 33, which is movably disposed between the limiting plate 38 and the switch element 33 and is located between the limiting plate 38 and the switch element 33, passes through the second window 381. The interlock plate 37 can be prevented from falling off the switching element 33, making the interlock plate 37 more reliable. Obviously, the length of the second window 381 in the pulling direction of the opening/closing handle 331 is longer than the length of the first window 372, i.e., the second window 381 does not interfere with the movement of the opening/closing handle 331.
Based on a further optimization of this embodiment, as shown in fig. 3 to 13, in another embodiment, the bus bar system 2 further comprises a shutter device 23 adapted to the adapter 34, the shutter device 23 comprising an inner grating plate 231 having a plurality of inner sockets 2311 and an outer grating plate 232 having a plurality of outer sockets 2321, the inner grating plate 231 being reciprocally movable embedded in the outer grating plate 232 by a second guiding mechanism; the inner insert 2311 corresponds to the outer insert 2321, the inner insert 2311 and the outer insert 2321 are opposite to each other and blocked by the inner grid 231 moving back and forth in the outer grid 232, the inner insert 2311 is opened when opposite to the outer insert 2321, the inner insert 2311 is closed when blocked (staggered) from the outer insert 2321, the end of the inner grid 231 is provided with an inclined portion 2312, the inclined surface of the inclined portion 2312 faces the outer grid 232, the outer grid 232 is provided with an insert hole 2322 corresponding to the inclined portion 2312, and an elastic element 233 for closing the insert is connected between the end of the inner grid 231 and the outer grid 232; the shutter devices 23 are assembled on both sides of the insulating support 21, the adaptor 34 is provided with a cutting 3411 corresponding to the inclined portion 2312, the cutting 3411 is inserted from the cutting hole 2322 to the inclined portion 2312 to open the cutting opening, so that the insertion end of the adaptor 34 is inserted into the busbar 22, and after the cutting 3411 is pulled out from the cutting hole 2322, the cutting opening is closed under the action of the elastic element 233. When the design is adopted, the plug-in port of the adapter 34 is opened (at this time, the elastic element 233 deforms) under the action of the plug strip 3411 when the plug-in end of the adapter is plugged into the busbar 22, so that the hot plug system 3 is plugged into the busbar system 2. After the hot plug system 3 is pulled out from the bus bar system 2, the plug interface is closed under the action of the elastic element 233 due to the absence of the plug strip 3411. So that the busbar 22, into which the hot plug system 3 is not inserted, is shielded by the shutter device 23 (i.e., the plug ports are closed in a free state), so that both side portions of the busbar 22 are not exposed to both side surfaces of the insulating holder 21, and the protection level of the IP40 can be achieved (prevention of invasion of objects greater than 1.0mm, prevention of invasion of mosquitoes, flies, insects, or objects having a diameter greater than 1.0 mm). The invention is safer and more reliable. If the shutter device 23 is not designed, both side portions of the busbar 22 are exposed to both side surfaces of the insulating holder 21. When the plug-in port is opened, as shown in fig. 10; when the plug-in port is closed, as shown in fig. 11. Obviously, the length of the cutting 3411 is greater than the length of the mating end of the adapter 34. Alternatively, the inclined portions 2312 and the elastic members 233 are respectively located at both ends of the inner grid plate 231. Alternatively, the inclined surface of the inclined portion 2312 may be an arc surface or an inclined plane. Alternatively, the ends of the cutting 3411 may be curved or beveled. Alternatively, the elastic element 233 is a spring. Alternatively, the shutter device 23 is mounted to both sides of the insulating support 21 by bolts. Obviously, the number of inner slots 2311 and outer slots 2321 of each shutter device 23 is the same. In combination with the alternative design of the adapter 34, (i.e. comprising a plug receptacle 341 and a number of plugs 342 fitted into the plug receptacle 341), the plug strip 3411 is arranged on the plug receptacle 341; the length of the blade 3411 is greater than the length of the plug end of the plug 342 extending beyond the plug receptacle 341.
Further, as shown in fig. 8 to 12, the second guiding mechanism includes opposite second guiding grooves 2323 disposed on the inner side of the outer grid plate 232, and second guiding rails 2313 disposed on both sides of the inner grid plate 231, and the second guiding rails 2313 are slidably fitted in the second guiding grooves 2323, so that the inner grid plate 231 is reciprocally movably embedded in the outer grid plate 232. Alternatively, the second guiding groove 2323 is in a dovetail shape, and the second guiding rail 2313 is in a dovetail shape matched with the second guiding groove 2323.
According to a further optimization of the present embodiment, as shown in fig. 3 to 7, in another embodiment, the insulating support 21 has a plurality of spacers 24 disposed therein at intervals, the spacers 24 are distributed in the height direction of the insulating support 21, and the busbar 2 penetrates each spacer 24. Preferably, the separator 24 is a flame retardant separator. When the bus system 2 generates a fault arc, the fault arc can be effectively prevented from spreading, so that the invention is safer and more reliable. Alternatively, the flame-retardant separator is made of flame-retardant materials such as SMC (SMC), namely unsaturated polyester glass fiber sheet molding compound, DMC (dough molding compound), and the like. Of course, designs other than flame retardant baffles may be used, but such designs do not prevent the spread of a fault arc.
Based on a further optimization of this embodiment, as shown in fig. 1 and 2, in another embodiment, a plurality of the hot plug systems 3 are distributed on the same side of the bus bar system 2 at the same time, or are distributed on two sides of the bus bar system 2 respectively. I.e. the bus bar system 2 is capable of single-sided or double-sided expansion of the hot plug system 3.
According to a further optimization of this embodiment, as shown in fig. 1, in another embodiment, the cabinet body 4 is further included, and the bottom plate 1 is fixedly arranged in the cabinet body 4. Of course, the design of the cabinet body 4 is not required, for example, the bottom plate 1 is directly fixed on the wall body. Naturally, the bottom plate 1 may be a wall directly.
As shown in fig. 1 to 24, in one embodiment, a state in which 1 hot plug system 3 is inserted into bus bar system 2 is taken as an example. The busbar 22 of the busbar system 2 has 4 pieces (named as an a-phase busbar, a B-phase busbar, a C-phase busbar and an N-phase busbar from top to bottom in sequence), the plug 342 of the adapter 34 of the hot plug system 3 has 3 pieces (in this embodiment, the switch element 33 connected to the adapter 34 is a three-pole switch), the plug end of the plug 342 has a resilient clip shape (i.e., the plug end of each plug 342 has 2 resilient pieces), the shutter device 23 corresponding to the hot plug system 3 has 3 pieces, and the plug interface of each shutter device 23 has 8 pieces (i.e., the inner plug 2311 and the outer plug 2321 have 8 pieces respectively). After the hot plug system 3 is inserted into the bus bar system 2, the structural state of the invention is as follows: after the 2 elastic pieces at the plugging end of the first plug 342 pass through the 2 plugging ports (first and second plugging ports from top to bottom) of the first shutter device 23, the a-phase busbar is clamped; after the 2 elastic pieces at the plugging end of the second plug 342 pass through the 2 plugging ports (third and fourth plugging ports from top to bottom) of the second shutter device 23, the B-phase busbar is clamped; after the 2 elastic pieces at the plugging end of the third plug 342 pass through the 2 plugging ports (fifth and sixth plugging ports from top to bottom) of the third shutter device 23, the C-phase busbar is clamped. Obviously, if there are 4 plugs 342 of the adapter 34, there are 4 shutter devices 23 corresponding to the hot plugging system 3, and at this time, after 2 elastic pieces of the plugging end of the fourth plug 342 pass through 2 plugging ports (seventh and eighth plugging ports from top to bottom) of the fourth shutter device 23, the N-phase busbar is clamped. Preferably, the fixing connection manner of the present embodiment is preferably a bolt connection manner.
In summary, the hot-plug low-voltage switchgear assembly is convenient to use, safe and reliable, can realize the insertion/removal of the hot-plug system into/from the bus system without cutting off the power supply entering the bus, and can realize the expansion/modification of the functional units without cutting off the power supply entering the bus, so as to ensure the power supply continuity. The limit rod of the push-pull rod is designed, so that the situation that the hot plug system is inserted into or pulled out of the bus system when the switch element is in a closing state can be avoided, and the invention is safer and more reliable. The design of the push-pull rod is convenient for realizing the reciprocating motion of the sliding plate on the base, so that the invention is more convenient to use and safer and more reliable. The locking parts of the push-pull rod lock the push-pull rod, so that the situation of false power transmission can be avoided, and the invention is safer and more reliable. The design of the wiring device can realize that the hot plug system is pulled out of the bus system without removing a feed bus connected with the hot plug system, so that the invention is more convenient to use. The design of the valve device ensures that the busbar is not exposed to the two side surfaces of the busbar system under the condition that the hot plug system is not inserted in the lateral direction of the busbar system, and can reach the protection level of the IP40, so that the invention is safer and more reliable. The flame-retardant partition board is designed, so that when a bus system generates a fault arc, the fault arc can be effectively prevented from spreading, and the invention is safer and more reliable. The hot plug low-voltage switchgear assembly can be applied to the technical fields of primary power distribution, secondary power distribution, tertiary power distribution and the like of a low-voltage power distribution system.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.

Claims (7)

1. A hot plug low-voltage switchgear is characterized in that: comprises a bottom plate (1), a bus system (2) and a plurality of hot plug systems (3);
the bus system (2) comprises an insulating bracket (21) and a plurality of bus bars (22) arranged in the insulating bracket (21) at intervals, wherein the bus bars (22) are distributed in the length direction of the insulating bracket (21);
the hot plug system (3) comprises a base (31), a sliding plate (32), a switch element (33) and an adapter (34) for connecting the switch element (33) with the busbar (22), wherein an outlet end of the adapter (34) is connected with an inlet end of the switch element (33), the adapter (34) and the switch element (33) are fixedly arranged on the sliding plate (32), and the sliding plate (32) can be assembled on the base (31) in a reciprocating manner through a first guide mechanism;
the hot plug system (3) and the bus system (2) are fixedly arranged on the bottom plate (1), the hot plug system (3) is positioned at the lateral direction of the bus system (2), the plug-in end of the adapter (34) faces the bus bar (22), and the plug-in end of the adapter (34) is plugged into/pulled out of the bus bar (22) through the reciprocating motion of the sliding plate (32) on the base (31), so that the hot plug system (3) is plugged into/pulled out of the bus system (2);
The hot plug system (3) further comprises a push-pull rod (35), the push-pull rod (35) is connected to the side part of the sliding plate (32) through a connecting piece (353), the push-pull rod (35) can swing on the connecting piece (353), a clamping interface (351) is arranged at the tail end of the push-pull rod (35), a clamping shaft (311) corresponding to the clamping interface (351) is fixedly arranged on the side part of the base (31), the clamping interface (351) is clamped on the clamping shaft (311), and the sliding plate (32) can do reciprocating motion on the base (31) by enabling the push-pull rod (35) to swing;
a limiting rod (352) is arranged on the push-pull rod (35), the limiting rod (352) is positioned between the opening and closing handle (331) of the switch element (33) and the wire inlet end, and when the opening and closing handle (331) is close to the limiting rod (352), the top of the opening and closing handle (331) is higher than the bottom of the limiting rod (352);
the push-pull rod (35) is provided with a first lock hole (354), the side part of the sliding plate (32) is provided with a lock plate (322), the lock plate (322) is provided with a second lock hole (323) corresponding to the first lock hole (354), and when the hot plug system (3) is pulled out of the bus system (2), a locking piece (355) is inserted into the first lock hole (354) and the second lock hole (323) to lock the push-pull rod (35).
2. A hot-swappable low-voltage switchgear assembly as claimed in claim 1, wherein: the adapter (34) comprises a plug seat (341) and a plurality of plugs (342) assembled in the plug seat (341), wherein the plug end of each plug (342) extends out of one side of the plug seat (341) and is used for being inserted into/pulled out of the busbar (22), and the wire outlet end of each plug (342) extends out of the other side of the plug seat (341) and is connected with the wire inlet end of the switch element (33).
3. A hot-swappable low-voltage switchgear assembly as claimed in claim 1, wherein: the hot plug system (3) further comprises a wiring device (36), the wiring device (36) comprises a wiring box (361) and a conductive strip (362) assembled in the wiring box (361), a flexible conductive strip (362) is formed by connecting a wire inlet end and a wire outlet end of the conductive strip (362) through a plurality of layers of conductive sheets (3621), the wire inlet end of the conductive strip (362) is connected with the wire outlet end of the switch element (33), a connecting section between the wire outlet end of the conductive strip (362) and the conductive sheets (3621) is fixedly arranged in the wiring box (361), and the wiring box (361) is fixedly arranged on the base (31) or/and the base plate (1).
4. A hot-swappable low-voltage switchgear assembly as claimed in claim 1, wherein: the hot plug system (3) further comprises an interlocking plate (37), a through hole (371) and a first window (372) are formed in the interlocking plate (37), the interlocking plate (37) is placed on the switch element (33), the through hole (371) corresponds to the wire outlet end of the switch element (33), the opening and closing handle (331) of the switch element (33) penetrates through the first window (372), and the interlocking plate (37) can do reciprocating motion on the switch element (33) through pulling the opening and closing handle (331) so as to enable the through hole (371) to be opposite to/staggered with the wire outlet end of the switch element (33).
5. A hot-swappable low-voltage switchgear assembly as claimed in claim 1, wherein: the busbar system (2) further comprises a shutter device (23) which is matched with the adapter (34), wherein the shutter device (23) comprises an inner grating plate (231) with a plurality of inner sockets (2311) and an outer grating plate (232) with a plurality of outer sockets (2321), and the inner grating plate (231) is embedded in the outer grating plate (232) in a reciprocating manner through a second guide mechanism;
the inner insertion hole (2311) corresponds to the outer insertion hole (2321), the inner insertion hole (2311) is opposite to/shielded from the outer insertion hole (2321) through the inner grating plate (231) in the outer grating plate (232) in a reciprocating mode, the inner insertion hole (2311) is opened when opposite to the outer insertion hole (2321), the inner insertion hole (2311) is closed when the inner insertion hole (2311) is shielded from the outer insertion hole (2321), an inclined portion (2312) is arranged at the end portion of the inner grating plate (231), the inclined face of the inclined portion (2312) faces the outer grating plate (232), a cutting hole (2322) corresponding to the inclined portion (2312) is formed in the outer grating plate (232), and an elastic element (233) is connected between the end portion of the inner grating plate (231) and the outer grating plate (232);
A plurality of valve devices (23) are assembled on two side surfaces of the insulating bracket (21), the adapter (34) is provided with a cutting (3411) corresponding to the inclined part (2312), and the cutting (3411) is inserted from the cutting hole (2322) to the inclined part (2312) to open the inserting port, so that the inserting end of the adapter (34) is inserted into the busbar (22).
6. A hot-swappable low-voltage switchgear assembly as claimed in claim 1, wherein: the insulating support (21) is internally provided with a plurality of partition boards (24) which are arranged at intervals, the partition boards (24) are distributed in the height direction of the insulating support (21), the busbar (22) penetrates through each partition board (24), and the partition boards (24) are flame-retardant partition boards.
7. A hot-swappable low-voltage switchgear assembly as claimed in claim 1, wherein: the plurality of hot plug systems (3) are simultaneously distributed on the same side of the bus system (2) or respectively distributed on two sides of the bus system (2).
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