CN209747920U - A switch cabinet and its anti-arc lighting device - Google Patents

Abstract

The utility model relates to a cubical switchboard and prevent burning arc lighting device thereof. The switch cabinet comprises a cabinet body and an anti-arcing lighting device arranged on the cabinet body, wherein a protection plate component of the anti-arcing lighting device is hinged to a lighting lamp mounting hole on the switch cabinet body and comprises an inner side protection plate and an outer side protection plate, a lighting lamp is arranged on the inner side protection plate and/or the outer side protection plate, a fixing nut for fixing the outer side protection plate is arranged on the side wall of the cabinet body, and a sealing plate for sealing a threaded hole of the fixing nut when the inner side protection plate rotates to a sealing state is arranged on the inner side protection plate. The inboard guard plate and the outside guard plate can the shutoff light mounting hole, and when the guard plate subassembly was rotatory around articulated axis, inboard guard plate or outside guard plate can carry out the shutoff with fixation nut's screw hole with the shutoff with the light mounting hole shutoff, that the shrouding can be natural when being in the shutoff state on the inboard guard plate, improve the barrier propterty of work efficiency and cubical switchboard.

Description

A switch cabinet and its anti-arc lighting device

technical field

The utility model relates to the field of components of a switch cabinet, in particular to a switch cabinet and an anti-arc lighting device thereof.

Background technique

Switchgear is widely used in power generation, transmission, distribution and other links of the power system. During normal operation, the switchgear needs to be inspected frequently to observe its operation and the situation inside the cable room. In order to clearly observe In the case of going to the inside of the cable room, it is necessary to install a lighting lamp in the cable room of the switch cabinet, so it is necessary to open a lighting installation hole on the cabinet body of the switch cabinet. When the lighting lamp fails, the lighting lamp needs to be disassembled from the mounting hole. At this time, the lighting lamp mounting hole will be in an open state. Once an arcing fault occurs inside the cabinet, the arcing energy will leak from the mounting hole. , It poses a threat to the safety of the maintenance personnel, so the switchgear can only be isolated from the power failure to safely replace the lighting lamp, which increases the maintenance cost.

In the Chinese utility model patent with the authorized announcement number CN208139221U, a protection device for arcing fault inside the lighting lamp is provided. Mounting holes, the protective device includes a protective plate assembly hinged at the installation hole of the lighting lamp, the protective plate assembly includes a vertically arranged inner protective plate and an outer protective plate, the inner protective plate is located inside the cabinet, and the outer protective plate is located outside the cabinet , the inner protective plate and the outer protective plate are both made of metal, and the inner protective plate and the outer protective plate are fixedly connected by a bent connecting plate, and the outer protective plate is provided with a hinge structure for hinged protective plate assembly on the outside of the cabinet The side of the inner protective plate close to the installation hole of the lighting lamp is equipped with a lighting lamp, the side of the outer protective plate away from the installation hole of the lighting lamp is installed with a control switch for controlling the opening and closing of the lighting lamp, and the outer protective plate is also provided with a cabinet The outer seal connection structure is detachably connected, and the outer seal connection structure is specifically a through hole on the outer protective plate for bolts to pass through. The cabinet body is provided with screws corresponding to the through holes and threaded with nuts. When the above-mentioned internal arcing fault protection device of the lighting lamp is in normal operation of the switch cabinet, the outer protective plate can seal the lighting lamp installation hole; At this time, the lighting lamp is on the outside of the cabinet body, and the lighting lamp can be repaired when the switch cabinet is running, which effectively reduces the maintenance cost.

However, the outer protective plate in the above-mentioned device is fixed on the switch cabinet body by screws and nuts. In general, in order to facilitate installation, the nuts are usually welded and fixed on the inner side of the cabinet body, so that after the screws are removed, the inside of the cabinet body will pass through the nuts. The threaded holes on the cabinet and the through holes on the cabinet are connected to the outside of the cabinet. Once an arcing fault occurs, the arcing energy will leak from the threaded holes, and the protection effect is not good. In addition, if, as in the comparison document, after the outer protective plate is opened, the screw and the nut are connected to seal the threaded hole, which is equivalent to using screws to block the threaded hole, but it increases the extra workload and makes the operation Extremely inconvenient.

Utility model content

The purpose of the utility model is to provide an anti-arc lighting device which can well seal the threaded hole without redundant operation; the purpose of the utility model is also to provide a switchgear with good protection effect.

In order to achieve the above purpose, the technical solution of the anti-arc lighting device of the present invention is: an anti-arc lighting device, including a protective plate assembly hinged at the installation hole of the lighting lamp on the switch cabinet body, and the protective plate assembly Consists of an inner guard for the inside of the cabinet and an outer guard for the outside of the cabinet, the inner guard and/or the outer guard are fitted with lights for illuminating the interior of the cabinet, the inner guard and the outer The protective plate is set at a fixed angle and alternately blocks the lighting installation holes during the rotation stroke of the protective plate assembly. The outer protective plate is provided with bolts for connecting with the side wall of the cabinet when it is rotated to the blocked state. The bolts that are threaded to the fixed nut on the top are perforated, and the inner protective plate is provided with a sealing plate that is used to block the threaded hole of the fixed nut when it is rotated to the blocking state.

The beneficial effect of the anti-arc lighting device of the utility model is: the protective plate assembly is hinged at the lighting lamp installation hole of the cabinet, when the protective plate assembly rotates around the hinge axis, the inner protective plate or the outer protective plate can respectively turn the lighting lamp The installation hole is blocked, no matter when the anti-arc lighting device is working or when the lamp is turned out for inspection, the protective plate assembly can seal the installation hole of the lamp, and a fixing nut is fixed on the side wall of the cabinet to secure the outer protective plate Fixed on the cabinet, the inner protective plate and the outer protective plate form a certain angle so that there is a certain operating space between the two, which is convenient for maintenance and operation; in order to further improve the protective effect of the anti-arc lighting device, the inner protective A sealing plate is set on the board. When the inner protective plate is in the blocking position, the sealing plate can naturally seal the threaded hole of the fixing nut without additional operation steps, which helps to improve work efficiency.

Further, the fixing nut is located on the inner wall of the cabinet, and the end of the inner protective plate away from the rotation axis of the protective plate assembly is integrally bent to form an L-shaped bent plate. The L-shaped bent plate includes a The vertical plate connected to the inner protective plate and the parallel plate connected with the vertical plate and parallel to the inner protective plate, the sealing plate is composed of the parallel plate; the fixing nut is fixed on the inner wall of the cabinet body, and the fixing nut is equivalent to The protrusion is set on the inner wall of the cabinet body, so the L-shaped bent plate can be used to make use of the transition of the vertical plate to facilitate the parallel plate to block the threaded hole.

Further, the end of the inner protective plate away from the rotation axis of the protective plate assembly is also integrally bent and formed with a tongue for inserting into the socket on the cabinet with the rotation of the inner protective plate, and the tongue is provided with a stopper for penetration Prevent the perforation of the inner protective plate from turning, the bending part of the tongue and the bending part of the bending plate are on the same straight line, and the extension direction of the tongue is opposite to the extension direction of the vertical plate; setting the tongue will The inner protective plate is fixed on the cabinet body to prevent the protective plate assembly from rotating, which is convenient for maintenance work, and at the same time the protective effect is relatively good; the bending part of the tongue and the bending part of the bending plate are on the same straight line, and the structure It is relatively compact, which can facilitate the bending operation, thereby facilitating the processing and manufacturing of the inner protective plate; the extension direction of the tongue is opposite to that of the vertical plate, which ensures that both the tongue and the bending plate can perform their respective duties, and the Bending in two directions can also enhance the deformation strengthening effect of the inner fender.

Further, the fender assembly also includes an adapter plate connecting the inner fender and the outer fender, the adapter plate includes a first connecting plate fixedly connected to the outer fender, a second connecting plate fixedly connected to the inner fender, and the outer fender The protective plate is provided with a hinge structure for hinged connection with the cabinet body. The first connecting plate passes through the lighting installation hole when the outer protective plate is in a blocked state, and the second connecting plate is connected with the first connecting plate and is on the outside When the protective plate is in the blocked state, it extends toward the direction away from the center of the lighting lamp installation hole. When the outer protective plate is in the blocked state, there is a first gap between the second connecting plate and the inner wall of the cabinet, and the second connecting plate is protected on the inner side. There is a second interval between the plate and the wall of the lighting lamp installation hole when the plate is in the blocked state, and the end of the inner protective plate close to the hinge structure has a protruding part beyond the second connecting plate to block the second interval; Since the first connecting plate passes through the lighting installation hole when the outer protective plate is in the blocked state, the second connecting plate has a first distance from the inner wall of the cabinet when the outer protective plate is in the blocked state, ensuring that the inner side The protective plate and the adapter plate can be rotated out smoothly, and the protruding part of the second connecting plate blocks the second interval, which improves the protection performance of the anti-arc lighting device when the lighting lamp is overhauled.

Further, the second connecting plate is L-shaped, and the adapter plate is Z-shaped as a whole; the folded edge of the Z-shaped adapter plate is convenient for connecting the inner protective plate and the outer protective plate.

The technical solution of the switch cabinet of the present utility model is: the switch cabinet includes a cabinet body and an anti-arc lighting device arranged on the cabinet body, the cabinet body is provided with a lighting installation hole, and the anti-arc lighting device includes The protective panel assembly at the installation hole of the lighting lamp, the protective panel assembly includes an inner protective panel located on the inside of the cabinet and an outer protective panel located on the outer side of the cabinet, and the inner protective panel and/or the outer protective panel are installed to illuminate the interior of the cabinet For the lighting lamp, the inner protective plate and the outer protective plate are set at a fixed angle and alternately block the lighting lamp installation holes during the rotation stroke of the protective plate assembly. The threaded bolt is perforated with the bolt threadedly connected with the fixed nut on the inner side wall of the cabinet, and the inner protective plate is provided with a sealing plate for blocking the threaded hole of the fixed nut when it is rotated to the blocking state.

The beneficial effect of the switch cabinet of the utility model is: the protective plate assembly is hinged at the lighting lamp installation hole of the cabinet body, when the protective plate assembly rotates around the hinge axis, the inner protective plate or the outer protective plate can respectively seal the lighting lamp installation hole No matter when the anti-arc lighting device is working or when the lighting lamp is turned out for maintenance, the protective plate assembly can seal the lighting lamp installation hole, and the fixing nut is fixed on the side wall of the cabinet to fix the outer protective plate in the cabinet On the body, a certain angle is formed between the inner protective plate and the outer protective plate so that there is a certain operating space between the two, which is convenient for maintenance and operation; in order to further improve the protective effect of the anti-arc lighting device, a Sealing plate, when the inner protective plate is in the blocking position, the sealing plate can naturally seal the threaded hole of the fixing nut without additional operation steps, which helps to improve work efficiency and also improves the overall quality of the switchgear. protection performance.

Further, the fixing nut is located on the inner wall of the cabinet, and the end of the inner protective plate away from the rotation axis of the protective plate assembly is integrally bent to form an L-shaped bent plate. The L-shaped bent plate includes a The vertical plate connected to the inner protective plate and the parallel plate connected with the vertical plate and parallel to the inner protective plate, the sealing plate is composed of the parallel plate; the fixing nut is fixed on the inner wall of the cabinet body, and the fixing nut is equivalent to The protrusion is set on the inner wall of the cabinet body, so the L-shaped bent plate can be used to make use of the transition of the vertical plate to facilitate the parallel plate to block the threaded hole.

Further, the end of the inner protective plate away from the rotation axis of the protective plate assembly is also integrally bent and formed with a tongue for inserting into the socket on the cabinet with the rotation of the inner protective plate, and the tongue is provided with a stopper for penetration Prevent the perforation of the inner protective plate from turning, the bending part of the tongue and the bending part of the bending plate are on the same straight line, and the extension direction of the tongue is opposite to the extension direction of the vertical plate; setting the tongue will The inner protective plate is fixed on the cabinet body to prevent the protective plate assembly from rotating, which is convenient for maintenance work, and at the same time the protective effect is relatively good; the bending part of the tongue and the bending part of the bending plate are on the same straight line, and the structure It is relatively compact, which can facilitate the bending operation, thereby facilitating the processing and manufacturing of the inner protective plate; the extension direction of the tongue is opposite to that of the vertical plate, which ensures that both the tongue and the bending plate can perform their respective duties, and the Bending in two directions can also enhance the deformation strengthening effect of the inner fender.

Further, the fender assembly also includes an adapter plate connecting the inner fender and the outer fender, the adapter plate includes a first connecting plate fixedly connected to the outer fender, a second connecting plate fixedly connected to the inner fender, and the outer fender The protective plate is provided with a hinged structure connected to the cabinet body. The first connecting plate passes through the lighting installation hole when the outer protective plate is in a blocked state, and the second connecting plate is connected with the first connecting plate and protects the When the plate is in the blocked state, it extends away from the center of the lighting lamp installation hole. When the outer protective plate is in the blocked state, there is a first gap between the second connecting plate and the inner wall of the cabinet. When in the blocked state, there is a second interval between the hole wall of the lighting lamp installation hole, and the end of the inner protective plate close to the hinge structure has a protruding part beyond the second connecting plate to block the second interval; because The first connecting plate passes through the lighting installation hole when the outer protective plate is in the blocked state, and the second connecting plate has a first interval between the inner wall of the cabinet when the outer protective plate is in the blocked state, ensuring the inner protection The plate and the adapter plate can be rotated out smoothly, and the protruding part of the second connecting plate blocks the second interval, which improves the protection performance of the anti-arc lighting device when the lighting lamp is overhauled.

Further, the second connecting plate is L-shaped, and the adapter plate is Z-shaped as a whole; the folded edge of the Z-shaped adapter plate is convenient for connecting the inner protective plate and the outer protective plate.

Description of drawings

Fig. 1 is the schematic diagram of the embodiment of switchgear of the present utility model;

Fig. 2 is the enlarged view of place A in Fig. 1;

Fig. 3 is a schematic diagram of the anti-arc lighting device in Fig. 1;

Fig. 4 is the top view of Fig. 3;

Fig. 5 is the schematic diagram of the outer protective plate in the embodiment of the switchgear of the present utility model;

6 is a schematic diagram of an adapter plate in an embodiment of the switch cabinet of the present invention;

Fig. 7 is a schematic diagram of the inner protective plate in the embodiment of the switchgear of the present invention;

Fig. 8 is a schematic diagram of an embodiment of the switchgear of the present invention when the outer protective plate is in a blocked state;

Fig. 9 is an enlarged view of place B in Fig. 8 (the hinge structure is not shown);

Fig. 10 is a schematic diagram of an embodiment of the switchgear of the present invention when the inner protective plate is in a blocked state;

Figure 11 is an enlarged view at C in Figure 10;

Among them: 1-cabinet body, 2-anti-arc lighting device, 3-outer protective plate, 4-inner protective plate, 5-bulb, 6-control switch, 7-fixing nut, 8-transfer plate, 9-turnover Side, 10-bolt piercing, 11-connection hole, 12-insert tongue, 13-first connection plate, 14-second connection plate, 15-first interval, 16-second interval, 17-extrusion part, 18- Bending plate, 19-hinge block, 20-hinge seat, 21-hinge shaft, 22-lamp holder, 23-opening.

Detailed ways

The switch cabinet of the present utility model will be further described below in conjunction with the accompanying drawings.

The embodiment of the switch cabinet of the present utility model, as shown in Fig. 1 and Fig. 2, comprises a cabinet body 1 and a lighting lamp installation hole arranged on the cabinet body 1, and an anti-arc lighting device 2 is installed at the lighting lamp installation hole, The anti-arc lighting device 2 is fixed on the cabinet body 1 in a hinged manner.

The structure of the anti-arc lighting device 2 is shown in Figure 3 and Figure 4, including the protective plate assembly and the lighting lamp installed on the protective plate assembly, the protective plate assembly is provided with a 1, the specific hinge structure is the hinge block 19 fixed on the outer protective plate 3, the cabinet body 1 is also provided with a hinge seat 20 corresponding to the hinge block 19, and the hinge seat 20 and the hinge block 19 pass through the hinge shaft 21 are hinged, thereby fixing the protective panel assembly on the cabinet body 1. The protective panel assembly includes an outer protective panel 3 outside the cabinet body 1 and an inner protective panel 4 inside the cabinet body 1. The outer protective panel 3 and the inner protective panel 4 are fixedly connected by an adapter plate 8 and form a 90° clip. The corners, the outer protective plate 3 and the inner protective plate 4 are made of metal and have good protective performance. The outer protective plate 3 and the inner protective plate 4 can rotate around the hinge shaft 21 with the anti-arc lighting device 2, and the outer protective plate 3 and the inner protective plate 4 can respectively rotate to the corresponding blocking state covering the installation hole of the lighting lamp to meet the requirements of the switch. The requirements for normal operation and maintenance of the cabinet. The outer fender 3 and the inner fender 4 are perpendicular to each other, so that there is a larger operating space between the outer fender 3 and the inner fender 4. In other embodiments, an obtuse angle can also be formed between the outer fender and the inner fender. or acute angles.

The lighting lamp includes a lamp holder 22 installed inside the outer protective plate 3 and a bulb 5 installed on the lamp holder 22. An opening 23 is also provided on the outer protective plate 3, and the lamp holder 22 has a control switch 6 passing through the opening 23. , the control switch 6 can control the bulb 5 to open or close. When the outer protective plate 3 is in the closed state, the bulb 5 is inside the cabinet 1, and the control switch 6 is outside the cabinet 1, which is convenient for observing the inside of the cabinet 1 and The light bulb 5 is controlled outside the cabinet 1 . When the lighting lamp needs to be overhauled, the fender assembly rotates around the hinge shaft 21 so that the lighting lamp on the outer fender 3 is rotated out, so that the inner fender 4 is in a blocked state. At this time, the fender follows the outer fender 3 in The outside of the cabinet body 1 is convenient for overhauling the lighting lamp. The light bulb 5 and the control switch 6 are fixed on the outer protective plate 3 through the lamp socket 22, which can shorten the connection line between the light bulb 5 and the control switch 6; in other embodiments, the lighting lamp can also be arranged on the inner protective plate close to the lighting lamp side of the mounting hole. Alternatively, illuminating lights can also be arranged on both the inner protective plate and the outer protective plate, so as to reduce the number of inspections and prolong the inspection period.

As shown in Figure 5, the outer protective plate 3 has a bent edge bent toward the cabinet body 1, forming an open box-shaped structure that can be buckled outside the cabinet body 1, and the outer protective plate 3 is set as an open box-shaped structure to form a The accommodating space for the lamp holder 22 reduces the occupied space of the lighting lamp inside the switch cabinet.

One of the bending edges of the outer protective plate 3 is provided with a connection hole 11 for connecting with the adapter plate 8, and a connecting hole 11 for connecting to the adapter plate 8 is provided on the bending edge opposite to the outer protective plate 3. The extended flange 9 is provided with bolt holes 10 for passing bolts. The bolt holes 10 form an external sealing connection structure in which the outer protective plate 3 is fixedly connected with the cabinet body 1 . Correspondingly, the cabinet body 1 is provided with a cabinet body through hole corresponding to the bolt through hole 10, and a fixing nut 7 is also provided on the inner side wall of the cabinet body 1 corresponding to the cabinet body through hole. When the outer protective plate 3 is in the blocked state, the bolts are used to pass through the bolt holes 10 and threaded with the fixing nut 7, so that the outer protective plate 3 is fixed on the cabinet body 1. Specifically, the fixing nut 7 is fixed on the cabinet body 1 by welding. on the inner wall of the body.

The hinged block 19 is fixed on the outer wall of the bent edge connected with the adapter plate 8 of the outer protective plate 3 , and the anti-arc lighting device 2 is hinged outside the cabinet body 1 through the hinge shaft 21 . The hinged structure is arranged on the outer protective plate 3 and installed on the outside of the cabinet, so that the space inside the switch cabinet is not occupied; in other embodiments, the hinged structure can also be used in a switch cabinet with a larger internal space. Set on the inner fender.

As shown in Figure 7, one end of the inner protective plate 4 is provided with a connection hole 11 connected to the adapter plate 8, and the middle part of the other end of the inner protective plate 4 is provided with a The tongue 12 that is bent and formed can be inserted into the corresponding jack on the cabinet body 1 when the inner protective plate 4 is in a blocked state, and the tongue 12 forms an internal sealing connection structure that is fixedly connected with the cabinet body 1; There are perforations on the tongue 12. When the inner protective plate 4 is in the blocked state, the perforation of the tongue 12 is outside the cabinet body 1. At this time, inserting a stopper in the perforation can be used to prevent the inner protective plate 4 from rotating to the inside of the cabinet body. . Of course, in other embodiments, the tongue may not be provided.

The outer protective plate 3 in this embodiment is fixed to the cabinet body 1 through two bolt holes 10, so two fixing nuts 7 need to be arranged on the inner side wall of the cabinet body 1, and two fixing nuts 7 need to be arranged on the inner protective plate 4 correspondingly. An L-shaped bent plate 18 blocks the threaded hole of the fixing nut 7 , and the two bent plates 18 are respectively located on both sides of the tongue 12 and integrally bent and formed on the inner protective plate 4 . The bent plate 18 includes a vertical plate connected to the inner protective plate 4 and perpendicular to the inner protective plate 4, and a parallel plate connected with the vertical plate and parallel to the inner protective plate 4. When the inner protective plate 4 was in the blocking state, the parallel plate The plates correspond to the threaded holes of the fixing nut 7 one by one, and the parallel plates form a sealing plate to block the threaded holes, preventing arcing energy from leaking from the threaded holes and improving the protection performance of the switchgear. In other embodiments, when the number of fixing nuts used to fix the outer protective plate is one, only one bent plate can be provided, and at this time, the bent plate and the tongue are staggered up and down.

Both the tongue 12 and the bending plate 18 are integrally bent and formed on the inner protective plate 4, and the bending part of the tongue 12 and the bending part of the bending plate 18 are on the same straight line, so the structure is relatively compact and can be easily bent operation, and then facilitate the processing and manufacturing of the inner protective plate 4; the extension direction of the tongue 12 is opposite to the extension direction of the vertical plate of the bent plate 18, which ensures that the tongue 12 and the bent plate 18 can perform their respective duties. And bending in two directions can also enhance the deformation strengthening effect of the inner side protection plate 4 . In other embodiments, the sealing plate and the inner protective plate, and the tongue and the inner protective plate can also be arranged in a separate form, and connected to the inner protective plate by welding. In other embodiments, the bending position of the tongue and the bending plate can also be staggered, and the bending position of the tongue can be flexibly adjusted according to the position of the socket, so that the applicability of the anti-arc lighting device is stronger.

In addition, in other embodiments, the threaded holes may not be blocked by the parallel plate on the bent plate. For example, the inner protective plate is also an open box-shaped structure, with a folded edge bent toward the cabinet body, and the outer protective plate is connected with the outer protective plate. The difference of the box-like structure is that one side wall in the box-like structure of the inner protective plate is not bent, that is, the box-like structure has only three sides folded, and the side wall without bending just forms a sealing plate for blocking the threaded hole. Or in other embodiments, the inner protective plate may be a solid plate, and the sealing plate is a plate welded separately to the inner protective plate.

The tongue 12 in the present embodiment is arranged on an end of the hinged structure of the inner protective plate 4 away from the protective plate assembly, so that when the inner protective plate 4 is in the blocking state, both ends of the inner protective plate 4 are fixed to the cabinet, The protective plate assembly can be firmly fixed on the cabinet to improve the protection level.

The structure of the adapter plate 8 is shown in Figure 6. The adapter plate 8 is integrally bent and formed in a Z-shape as a whole. The L-shaped second connecting plate 14 is fixedly connected.

The first connecting plate 13 is provided with a connecting hole corresponding to the connecting hole 11 on the bending edge of the outer protective plate 3, and bolts are used to pass through the corresponding connecting holes on the outer protective plate 3 and the first connecting plate 13 to realize the fixed connection of the two. . The second connecting plate 14 includes a fixed flange that contacts and is fixed with the inner protective plate 4, and a connecting flange that connects the fixed flange and the first connecting plate 13. The fixed flange is provided with a fixing hole, and the inner protective plate 4 is provided with a fixed flange. There are fixing holes corresponding to the fixing holes on the fixing flange, and bolts are used to pass through the corresponding fixing holes on the fixing flange and the inner protective plate 4 to realize the fixed connection of the two.

The adapter plate 8 in this embodiment is integrally bent and formed, which is convenient for processing. In other embodiments, the first connecting plate and the second connecting plate may also be made into separate forms, and then fixed by welding, or The first connecting plate is set in an L shape; the outer protective plate and the first connecting plate, and the inner protective plate and the second connecting plate can also be connected by welding. Of course, both the first connecting plate and the second connecting plate can be set as straight plates, and an L-shaped adapter plate is formed by welding. At this time, the first connecting plate is directly welded to the outer protective plate, and the second connecting plate is directly connected to the inner protective plate. The plate is welded and fixed.

In this embodiment, the inner protective plate, the outer protective plate and the adapter plate are separated, and are spliced by bolts. In order to further reduce the assembly steps, the adapter plate can be directly connected to the inner protective plate or the outer protective plate during production. It is made by integral bending and forming, which can reduce assembly steps, but correspondingly increases processing difficulty.

Since the adapter plate 8 is Z-shaped, in order to ensure that the anti-arc lighting device 2 can rotate around the hinge shaft 21 smoothly, the adapter plate 8 cannot fit the hole wall of the lighting lamp installation hole. When in the blocked state, as shown in Figure 8 and Figure 9, the first connecting plate 13 passes through the lighting lamp installation hole, and there is a first interval 15 between the connecting flange of the second connecting plate 14 and the inner wall of the cabinet, which ensures The inner protective plate 4 and the adapter plate 8 can be turned out smoothly. When arcing occurs inside the switchgear, the arcing energy is blocked by the second connecting plate 14 and cannot diffuse to the outside of the switchgear. When the inner protective plate 4 is in the blocked state (to overhaul the lighting lamp), there is a second gap 16 between the connecting flange of the second connecting plate 14 and the cabinet body 1, and one end of the inner protective plate 4 close to the hinged structure There is a protruding part 17, which is used to close the second interval 16, as shown in Figure 10 and Figure 11, the protruding part 17 can be closely attached to the inner wall of the cabinet body 1 when the inner protective plate 4 is in the closed state, so as to avoid In order to avoid the outward diffusion of the arc in the switchgear during maintenance. Whether the inner protective plate 4 is in the blocked state or the outer protective plate 3 is in the blocked state, the protective plate assembly can completely block the lighting lamp installation hole, which improves the protection level of the switch cabinet.

The fixing nuts in this embodiment are welded on the inner side wall of the cabinet body, that is to say, the fixing nuts are protrudingly arranged on the inner side wall of the cabinet body, so the L-shaped bending plate is set, and the transition of the vertical plate can be used to facilitate parallel The plate plugs the threaded holes. In other embodiments, the fixing nuts can be welded on the outer wall of the cabinet. At this time, there is no protruding part on the inner wall of the cabinet. The inner protective plate can be set as a straight plate, and the straight plate can directly connect the cabinet body on the cabinet body. The through holes are covered to cover the threaded holes, but when the fixing nuts are arranged on the outer wall of the cabinet, it is necessary to make adaptive adjustments to the outer protective plates, such as setting the L-shaped front facing fixing nuts on the outer protective plates Bend the plate so that the outer fenders can be secured to the retaining nuts.

When the switchgear of the utility model is in normal operation, the outer protective plate is in a blocked state. Due to the existence of the outer sealing connection structure, the outer protective plate is fixed on the cabinet body and the lighting installation hole is completely closed. With the existence of some parts, the gap between the adapter plate and the cabinet body becomes very small, which improves the protection level of the switch cabinet; the light bulb can be turned on through the control switch outside the cabinet body to check the inside of the switch cabinet. When it is necessary to overhaul the lighting, remove the bolts on the outer protective plate, turn the protective plate assembly so that the inner protective plate is in a closed state, and use the inner sealing connection structure on the inner protective plate to fix the inner protective plate on the cabinet , to prevent the rotation of the protective plate assembly. At this time, the outer protective plate and the lighting lamp are outside the switch cabinet, and the bulb can be inspected and repaired. The sealing plate on the inner protective plate can seal the threaded hole of the fixing nut, which improves the safety of the switch cabinet during maintenance. protection level.

The embodiment of the anti-arc lighting device of the utility model has the same structure as the anti-arc lighting device in the embodiment of the switchgear above, so it will not be repeated here.

Claims (10)

1. The utility model provides a prevent burning arc lighting device, is including being used for articulating the guard plate subassembly of light mounting hole department on the switch cabinet body, and the guard plate subassembly is including being used for being located the inboard guard plate of the internal side of cabinet and being used for being located the outside guard plate in the external side of cabinet, installs the light that is used for illuminating the internal portion of cabinet on inboard guard plate and/or the outside guard plate, and inboard guard plate and outside guard plate become fixed contained angle setting and shutoff in turn in the rotation stroke of guard plate subassembly the light mounting hole is provided with on the outside guard plate to be used for wearing to adorn the bolt with the bolt perforation with the fixation nut threaded connection on the cabinet side wall when self rotates the shutoff state, its: and the inner side protection plate is provided with a sealing plate for sealing the threaded hole of the fixing nut when the inner side protection plate rotates to a sealing state.

2. The arcing resistant lighting device of claim 1, wherein: the fixation nut is located the internal lateral wall of cabinet, keeps away from the integrative board of bending that takes shape to have the L shape of bending of guard plate subassembly axis of rotation on the inboard guard plate, and the board of bending of L shape includes the vertical plate that links to each other and the inboard guard plate of perpendicular to with the inboard guard plate and links to each other and be on a parallel with the parallel plate of inboard guard plate with the vertical plate, the shrouding by the parallel plate constitutes.

3. The arcing resistant lighting device of claim 2, wherein: the one end of keeping away from guard plate subassembly axis of rotation on the inboard guard plate is still integrative to bend and is formed with and be used for inserting the tongue of inserting in the jack on the cabinet body along with the rotation of inboard guard plate, is provided with on the tongue of inserting to be used for penetrating to block the piece in order to prevent the perforation of inboard guard plate toward gyration, the position of bending of tongue of inserting with the position of bending of the board of bending is on same straight line, and the extension direction of tongue of inserting with the extending direction of vertical plate is opposite.

4. The arcing prevention lighting device according to any one of claims 1 to 3, wherein: the protection plate assembly also comprises an adapter plate for connecting the inner side protection plate and the outer side protection plate, the adapter plate comprises a first connecting plate fixedly connected with the outer side protection plate, the second connecting plate is fixedly connected with the inner side protection plate, the outer side protection plate is provided with a hinge structure which is used for being hinged and connected with the cabinet body, the first connecting plate penetrates through the lighting lamp mounting hole when the outer side protection plate is in a blocking state, the second connecting plate is connected with the first connecting plate and extends towards the direction far away from the center of the lighting lamp mounting hole when the outer side protection plate is in the blocking state, a first interval is formed between the second connecting plate and the inner wall of the cabinet body when the outer side protection plate is in the blocking state, a second interval is formed between the second connecting plate and the hole wall of the lighting lamp mounting hole when the inner side protection plate is in the blocking state, and one end, close to the hinge structure, of the inner side protection plate is provided with.

5. the arcing resistant lighting device of claim 4, wherein: the second connecting plate is L-shaped, and the adapter plate is overall Z-shaped.

6. Switch cabinet, including the cabinet body and set up the anti-arcing lighting device on the cabinet body, be provided with the light mounting hole on the cabinet body, anti-arcing lighting device is including articulating the guard plate subassembly in light mounting hole department, and the guard plate subassembly is including the inboard guard plate that is located the internal side of cabinet and the outside guard plate that is located the external side of cabinet, installs the light that is used for illuminating the internal portion of cabinet on inboard guard plate and/or the outside guard plate, and inboard guard plate and outside guard plate become fixed contained angle setting and in the shutoff in turn in the rotation stroke of guard plate subassembly the light mounting hole is provided with on the outside guard plate and is used for wearing when self rotates the shutoff state to adorn the bolt with the bolt perforation with the fixation nut threaded connection on the internal side wall of: and the inner side protection plate is provided with a sealing plate for sealing the threaded hole of the fixing nut when the inner side protection plate rotates to a sealing state.

7. The switchgear cabinet according to claim 6, characterized in that: the fixation nut is located the internal lateral wall of cabinet, keeps away from the integrative board of bending that takes shape to have the L shape of bending of guard plate subassembly axis of rotation on the inboard guard plate, and the board of bending of L shape includes the vertical plate that links to each other and the inboard guard plate of perpendicular to with the inboard guard plate and links to each other and be on a parallel with the parallel plate of inboard guard plate with the vertical plate, the shrouding by the parallel plate constitutes.

8. The switchgear cabinet according to claim 7, wherein: the one end of keeping away from guard plate subassembly axis of rotation on the inboard guard plate is still integrative to bend and is formed with and be used for inserting the tongue of inserting in the jack on the cabinet body along with the rotation of inboard guard plate, is provided with on the tongue of inserting to be used for penetrating to block the piece in order to prevent the perforation of inboard guard plate toward gyration, the position of bending of tongue of inserting with the position of bending of the board of bending is on same straight line, and the extension direction of tongue of inserting with the extending direction of vertical plate is opposite.

9. The switchgear as claimed in any of claims 6 to 8, wherein: the protection plate assembly also comprises an adapter plate for connecting the inner side protection plate and the outer side protection plate, the adapter plate comprises a first connecting plate fixedly connected with the outer side protection plate, the second connecting plate is fixedly connected with the inner side protection plate, the outer side protection plate is provided with a hinge structure which is hinged and connected with the cabinet body, the first connecting plate penetrates through the lighting lamp mounting hole when the outer side protection plate is in a blocking state, the second connecting plate is connected with the first connecting plate and extends towards the direction far away from the center of the lighting lamp mounting hole when the outer side protection plate is in the blocking state, a first interval is formed between the second connecting plate and the inner wall of the cabinet body when the outer side protection plate is in the blocking state, a second interval is formed between the second connecting plate and the hole wall of the lighting lamp mounting hole when the inner side protection plate is in the blocking state, and one end, close to the hinge structure, of the inner side protection plate is provided with an exceeding.

10. The switchgear cabinet according to claim 9, characterized in that: the second connecting plate is L-shaped, and the adapter plate is overall Z-shaped.