CN114640035B - Mining explosion-proof and intrinsically safe electric cabinet - Google Patents
Mining explosion-proof and intrinsically safe electric cabinet Download PDFInfo
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- CN114640035B CN114640035B CN202210280526.4A CN202210280526A CN114640035B CN 114640035 B CN114640035 B CN 114640035B CN 202210280526 A CN202210280526 A CN 202210280526A CN 114640035 B CN114640035 B CN 114640035B
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- box body
- box cover
- box
- fixed
- rotating shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention relates to a power distribution cabinet for power supply, in particular to a mining explosion-proof and intrinsically safe electric cabinet which comprises a box body and a box cover detachably arranged on one side of the box body, wherein a locking mechanism and a power on-off assembly are arranged between one side of the box cover facing the interior of the box body and the interior of the box body, a through hole is formed in the center of the box cover, and a rotating shaft penetrating through the inner side and the outer side of the box cover is rotatably arranged on the through hole. Because locking mechanism and connect the outage subassembly are connected simultaneously to the pivot, consequently when rotating the dismouting knob and drive the pivot and rotate, can not only realize quick assembly disassembly's function, can also reach the effect of automatic circular telegram outage, prevent that flammable and explosive gases such as the in-process gas of demolising the case lid from entering into the box and producing the incident with the electrical equipment contact of circular telegram.
Description
Technical Field
The invention relates to a power distribution cabinet for power supply, in particular to a mining explosion-proof and intrinsically safe electric cabinet.
Background
The mining flameproof and intrinsically safe electric cabinet is a general intrinsically safe uninterrupted electric cabinet which is allowed to be used in gas and coal dust explosion dangerous environments, and is suitable for an electric cabinet for supplying power to mining intrinsically safe equipment.
The mining explosion-proof and intrinsically safe electric cabinet is characterized in that an explosion-proof box is additionally arranged outside electrical equipment, and the explosion-proof box cannot be damaged and cannot ignite gas outside the explosion-proof box after flammable gas explodes in the explosion-proof box; the Chinese patent discloses an explosion-proof and intrinsically safe electric cabinet (No. CN 201533113U) for a heading machine, and provides a non-bolt-fastened quick-opening type electric cabinet.
Although the existing bolt connection electric cabinet is complicated to disassemble, assemble and open, the stability is good, and the loosening of the cabinet door can be effectively prevented by utilizing the self-locking characteristic of threaded connection, so that combustible and explosive gas enters the cabinet body; therefore, the application discloses a mining explosion-proof and intrinsically safe electric cabinet capable of achieving rapid disassembly and assembly opening and closing on the premise of ensuring sealing stability.
Disclosure of Invention
The invention aims to provide a mining explosion-proof and intrinsically safe electric cabinet, which aims to solve the problem of stable and rapid installation in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a mining explosion-proof and intrinsically safe electric cabinet comprises a box body and a box cover which is detachably arranged on one side of the box body, wherein a locking mechanism and a power on-off assembly are arranged between one side of the box cover facing the interior of the box body and the interior of the box body, a through hole is formed in the center of the box cover, and a rotating shaft penetrating through the inner side and the outer side of the box cover is rotatably arranged on the through hole;
a sealing sleeve which is in sealing fit with the outer wall of the rotating shaft is fixed on the inner wall of the through hole, a dismounting knob is fixed at one end of the rotating shaft, which penetrates out of the outer side of the box cover, one end of the rotating shaft, which penetrates out of the inner side of the box cover, is connected with the locking mechanism, and the locking mechanism is connected with the power on-off component;
the rotating shaft can drive the locking mechanism to fix the box cover on one side of the box body, and the rotating shaft connects the power-off assembly to connect the electrical equipment inside the box body to a power supply in the process of fixing the box cover on one side of the box body.
As a further scheme of the invention: the locking mechanism comprises four locking screw rods which are rotatably arranged at four corners of one side of the box cover facing the interior of the box body and fixed threaded sleeves which are fixed at the four corners of the interior of the box body and correspond to the four locking screw rods;
and the four locking screw rods are respectively connected with one end of the rotating shaft penetrating out of the inner side of the box cover through four groups of transmission structures.
As a still further scheme of the invention: the transmission structure comprises a driving gear fixed at one end of the rotating shaft penetrating through the inner side of the box cover and four driven gears rotatably mounted on one side of the box cover facing the interior of the box body through gear shafts;
each gear shaft corresponds to one locking screw, and the gear shafts corresponding to each other are connected with the locking screws through transmission parts.
As a still further scheme of the invention: the two sides of the interior of the box body are respectively provided with a partition plate, the partitions at the two sides divide the interior of the box body into a central area and two side areas, the central area is used for mounting electrical equipment, and the locking screw and the fixing screw are located at the side areas when matched.
As a still further scheme of the invention: the power on-off assembly comprises a fixed contact fixedly arranged in the box body and electrically connected with electrical equipment and a movable contact movably arranged in the box body and matched with the fixed contact, and the movable contact is electrically connected with a power supply;
the movable contact is connected with a driving gear in the locking mechanism through a linear driving structure.
As a still further scheme of the invention: the case lid is fixed with the rubber strip towards the inside side edge of box the box orientation one side edge of case lid is seted up be used for with rubber strip complex seal groove.
As a still further scheme of the invention: the linear driving structure comprises a power connection gear coaxially fixed on one side, facing the inside of the box, of the driving gear, a toothed plate movably arranged on one side, facing the inside of the box, of the box cover through a guide structure, and a clamping structure connected with the toothed plate and the movable contact, and the power connection gear is meshed with the toothed plate.
As a still further scheme of the invention: the clamping structure comprises an embedded plate clamping piece fixed at the lower part of the toothed plate, a push button matched with a clamping groove formed at the lower part of the embedded plate clamping piece and a track fixed on the inner wall of the box body;
the push button is arranged in the track in a sliding mode, and the movable contact is installed on the push button; the upper part of the push button is provided with an extension part protruding towards the box cover.
As a still further scheme of the invention: the guide structure is including fixing the case lid orientation guide way on one side of box inner wall and fixing the pinion rack is towards the deflector of case lid one side, the deflector is pressed close to the one end of case lid and is slided and set up in the guide way, the guide way with the track is parallel.
Compared with the prior art, the invention has the beneficial effects that: because locking mechanism and connect the outage subassembly are connected simultaneously to the pivot, consequently when rotating the dismouting knob and drive the pivot and rotate, can not only realize quick assembly disassembly's function, can also reach the effect of automatic circular telegram outage, prevent that flammable and explosive gases such as the in-process gas of demolising the case lid from entering into the box and producing the incident with the electrical equipment contact of circular telegram.
Drawings
FIG. 1 is a schematic structural diagram of a mining explosion-proof and intrinsically safe electric cabinet.
FIG. 2 is a schematic structural diagram of a mining flameproof and intrinsically safe electrical cabinet with a separated box cover and box body.
Fig. 3 is a schematic structural view of fig. 2 from another view angle.
Fig. 4 is a schematic view of the internal structure of the box body with the box cover removed.
Fig. 5 is a schematic structural diagram of a side of the box cover facing the box body.
Fig. 6 is a schematic structural view of the rotating shaft and the sealing sleeve after being detached from the through hole.
In the figure: 1-a box body; 2-box cover; 3, disassembling and assembling a knob; 4-locking the screw rod; 5-fixing the threaded sleeve; 6-a rotating shaft; 7-sealing sleeve; 8-a drive gear; 9-a driven gear; 10-a gear shaft; 11-a transmission member; 12-a powered gear; 13-toothed plate; 14-a guide plate; 15-a guide groove; 16-a panel engaging member; 17-a push button; 18-a track; 19-a movable contact; 20-a fixed contact; 21-a separator; 22-a seal groove; 23-rubber strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 6, as an embodiment of the invention, the mining flameproof and intrinsically safe electric cabinet includes a box body 1 and a box cover 2 detachably disposed on one side of the box body 1, a locking mechanism and a power on/off assembly are disposed between one side of the box cover 2 facing the inside of the box body 1 and the inside of the box body 1, a through hole is disposed in the center of the box cover 2, and a rotating shaft 6 penetrating through the inside and the outside of the box cover 2 is rotatably disposed on the through hole;
a sealing sleeve 7 which is in sealing fit with the outer wall of the rotating shaft 6 is fixed on the inner wall of the through hole, a dismounting knob 3 is fixed at one end of the rotating shaft 6 which penetrates out of the outer side of the box cover 2, one end of the rotating shaft 6 which penetrates out of the inner side of the box cover 2 is connected with the locking mechanism, and the locking mechanism is connected with a power-on and power-off component;
the rotating shaft 6 can drive the locking mechanism to fix the box cover 2 on one side of the box body 1, and the rotating shaft 6 connects a power-off component to connect electrical equipment (not shown in the figure) inside the box body 1 in the process of fixing the box cover 2 on one side of the box body 1.
In the embodiment, as the rotating shaft 6 is simultaneously connected with the locking mechanism and the power on/off component, when the dismounting knob 3 is rotated to drive the rotating shaft 6 to rotate, not only can the function of quick dismounting be realized, but also the effect of automatic power on/off can be achieved, and the safety accident caused by the contact of flammable and combustible gas such as gas and the like entering the box body 1 and the electrified electrical equipment in the process of dismounting the box cover 2 can be prevented;
it should be noted that, when the box cover 2 is removed from one side of the box body 1, the rotating shaft 6 firstly cuts off the power of the electrical equipment inside the box body 1 by means of the power on/off component, and then the box cover 2 is removed from one side of the box body 1;
similarly, when the case cover 2 is installed on one side of the case body 1, firstly, the case cover 2 is used for connecting the power-off component to switch on the electrical equipment in the case body 1 after isolating the inside of the case body 1 from the outside, thereby achieving the purpose of safe installation.
Electrical devices include, but are not limited to, low voltage switching devices and control, measurement, signaling, protection, regulation, etc. devices associated therewith.
The sealing sleeve 7 is arranged to prevent external air from entering the box body 1 when the box cover 2 is arranged on one side of the box body 1, and to increase the rotational damping between the rotating shaft 6 and the through hole by using the sealing sleeve 7 to prevent the rotating shaft 6 from loosening.
As another embodiment of the present invention, the locking mechanism includes four locking screws 4 rotatably disposed at four corners of one side of the box cover 2 facing the inside of the box body 1, and fixing thread sleeves 5 fixed at four corners of the inside of the box body 1 and corresponding to the four locking screws 4;
the four locking screws 4 are respectively connected with one end of the rotating shaft 6 penetrating out of the inner side of the box cover 2 through four groups of transmission structures;
note that the four locking screws 4 have the same thread turning direction, and the inner wall of the fixed thread insert 5 is provided with an internal thread adapted to the locking screws 4.
In the embodiment, when the rotating shaft 6 rotates, four groups of transmission structures are utilized to simultaneously drive four locking screw rods 4 at four corners to rotate in the same direction, and the four locking screw rods are matched with four fixed screw sleeves 5 arranged in the box body 1 to fix the box cover 2 on one side of the box body 1;
in addition, compared with the traditional threaded connection and fixation, the four locking screws 4 at four corners can be simultaneously connected with the four fixed threaded sleeves 5 in the box body 1 only by rotating the dismounting knob 3, so that the novel screw-type connector has the characteristics of time saving and labor saving;
and the threaded connection is utilized to have the characteristic of self locking, and the reliability is higher when the box cover 2 is fixed on one side of the box body 1 by adopting the threaded connection.
As another embodiment of the present invention, the transmission structure includes a driving gear 8 fixed at one end of the rotating shaft 6 penetrating through the inside of the box cover 2 and four driven gears 9 rotatably mounted on one side of the box cover 2 facing the inside of the box body 1 through a gear shaft 10;
each gear shaft 10 corresponds to one locking screw 4, and the mutually corresponding gear shafts 10 and the locking screws 4 are connected through transmission parts 11.
In this embodiment, when the dismounting knob 3 drives the rotating shaft 6 to rotate, the driving gear 8 fixed to the rotating shaft 6 drives the four driven gears 9 and the gear shafts 10 to rotate, the four gear shafts 10 rotate in the same direction, and then the driving gear drives the four locking screws 4 to rotate in the same direction under the action of the transmission member 11, so as to cooperate with the four fixed thread sleeves 5 inside the box body 1 to fix the box cover 2 on one side of the box body 1.
As another embodiment of the present invention, a partition 21 is disposed on each of two sides inside the box body 1, the partitions 21 on the two sides divide the inside of the box body 1 into a central area and two side areas, the central area is used for mounting electrical equipment, and the locking screw 4 and the fixing screw 5 are located on the side areas when they are engaged.
In this embodiment, since the partition 21 is provided and the electrical equipment is installed in the center, the wire of the electrical equipment does not interfere with the fitting of the locking screw 4 to the fixing screw 5 (i.e., the case cover 2 is removed), and the wire of the electrical equipment is prevented from being twisted when the locking screw 4 is screwed into or out of the fixing screw 5.
As another embodiment of the present invention, the power on/off assembly includes a fixed contact 20 fixedly installed in the box body 1 and electrically connected with the electrical equipment, and a movable contact 19 movably arranged in the box body 1 and adapted to the fixed contact 20, wherein the movable contact 19 is electrically connected with a power supply;
the movable contact 19 is connected with the driving gear 8 in the locking mechanism through a linear driving structure.
In this embodiment, when the driving gear 8 drives the locking screws 4 at four corners to rotate by means of the driven gear 9, the gear shaft 10 and the transmission member 11, the driving gear 8 drives the movable contact 19 to approach or separate from the fixed contact 20 by using the linear driving structure, so as to control the electrical equipment in the box 1 to be powered on or powered off;
specifically, when the locking screw 4 is screwed into the fixed threaded sleeve 5, the driving gear 8 drives the movable contact 19 to continuously approach the fixed contact 20 through the linear driving structure, and when the locking screw 4 is completely screwed into the fixed threaded sleeve 5, the movable contact 19 is communicated with the fixed contact 20;
when the locking screw rod 4 is screwed out of the fixed threaded sleeve 5, the driving gear 8 drives the movable contact 19 to be separated from the fixed contact 20 through the linear driving structure.
As another embodiment of the present invention, a rubber strip 23 is fixed to an edge of one side of the case cover 2 facing the inside of the case 1, and a sealing groove 22 for being engaged with the rubber strip 23 is formed in an edge of one side of the case 1 facing the case cover 2.
In the embodiment, the rubber strip 23 and the sealing groove 22 are arranged to be matched, so that the sealing performance of the inside of the box body 1 and the external environment can be improved when the box cover 2 is arranged on one side of the box body 1;
the rubber strip 23 is made of soft materials and has certain elasticity, and in the process that the locking screw rod 4 is screwed into the fixed threaded sleeve 5, the rubber strip 23 is matched with the sealing groove 22; after the rubber strip 23 and the sealing groove 22 completely isolate the interior of the box body 1 from the external environment, when the locking screw rod 4 is continuously screwed into the fixed threaded sleeve 5, the rubber strip 23 is extruded and deformed, and the movable contact 19 is communicated with the fixed contact 20 after the interior of the box body 1 is isolated from the external environment;
in the process that the locking screw rod 4 is screwed out of the fixed threaded sleeve 5, the movable contact 19 is firstly separated from the fixed contact 20, the electrical equipment in the box body 1 is powered off, the rubber strip 23 is restored to the original shape, and then the external air can enter the box body 1 only by continuously screwing out the locking screw rod 4;
the purpose of this arrangement is to ensure that the movable contact 19 is connected to the fixed contact 20 only after the interior of the housing 1 is isolated from the outside; accordingly, only when the movable contact 19 is separated from the fixed contact 20 and the electrical equipment in the box 1 is powered off, the inside of the box 1 is in contact with the outside air, and safety is guaranteed.
As another embodiment of the present invention, the linear driving structure includes a power receiving gear 12 coaxially fixed on one side of the driving gear 8 facing the inside of the box body 1, a toothed plate 13 movably disposed on one side of the box cover 2 facing the inside of the box body 1 through a guide structure, and a snap-fit structure connecting the toothed plate 13 and the movable contact 19, wherein the power receiving gear 12 is engaged with the toothed plate 13.
In this embodiment, when the driving gear 8 rotates, the power connection gear 12 is driven to rotate synchronously, the power connection gear 12 drives the toothed plate 13 to perform linear motion under the action of the guide structure, and the toothed plate 13 performing linear motion drives the movable contact 19 to move away from or close to the fixed contact 20 by virtue of the clamping structure, so as to perform the functions of electrifying and electrifying.
As another embodiment of the present invention, the engaging structure includes an engaging plate fastener 16 fixed at the lower portion of the toothed plate 13, a push button 17 engaged with a slot formed at the lower portion of the engaging plate fastener 16, and a rail 18 fixed at the inner wall of the box 1;
the push button 17 is arranged in the track 18 in a sliding manner, and the movable contact 19 is installed on the push button 17;
in detail, the push button 17 has an extension portion protruding toward the case cover 2 at an upper portion thereof.
In this embodiment, in the process of assembling and disassembling the case cover 2, although the push button 17 is gradually far away from or close to the engaging plate fastener 16, the extending part at the upper part of the push button 17 is always clamped and embedded in the clamping groove at the lower part of the engaging plate fastener 16, so as to ensure that the engaging plate fastener 16 can always drive the push button 17 to move linearly in the process of assembling and disassembling the case cover 2, and after the locking screw 4 is completely separated from the fixed threaded sleeve 5, the case cover 2 can be taken out along the axis of the rotating shaft 6, so that the extending part is completely separated from the clamping groove at the lower part of the engaging plate fastener 16;
of course, at the beginning of installing the case cover 2, the extending part on the upper part of the push button 17 is aligned with the clamping groove on the lower part of the embedded plate clamping piece 16, then the four locking screws 4 are inserted into the fixed threaded sleeves 5, and finally the dismounting knob 3 is rotated.
As another embodiment of the present invention, the guiding structure includes a guiding slot 15 fixed on a side of the cover 2 facing the inner wall of the box body 1 and a guiding plate 14 fixed on a side of the toothed plate 13 facing the cover 2, one end of the guiding plate 14 adjacent to the cover 2 is slidably disposed in the guiding slot 15, and the guiding slot 15 is parallel to the track 18.
In this embodiment, because the guide slot 15 and the guide plate 14 are provided, it is ensured that the toothed plate 13 is movably disposed on the side of the case cover 2 facing the inside of the case body 1, and is not separated from the case cover 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (2)
1. A mining explosion-proof and intrinsically safe electric cabinet comprises a box body (1) and a box cover (2) detachably arranged on one side of the box body (1), and is characterized in that a locking mechanism and a power on-off assembly are arranged between one side, facing the interior of the box body (1), of the box cover (2) and the interior of the box body (1), a through hole is formed in the center of the box cover (2), and a rotating shaft (6) penetrating through the inner side and the outer side of the box cover (2) is rotatably arranged on the through hole;
a sealing sleeve (7) which is in sealing fit with the outer wall of the rotating shaft (6) is fixed on the inner wall of the through hole, a dismounting knob (3) is fixed at one end of the rotating shaft (6) which penetrates out of the outer side of the box cover (2), one end of the rotating shaft (6) which penetrates out of the inner side of the box cover (2) is connected with the locking mechanism, and the locking mechanism is connected with a power-on and power-off component;
the rotating shaft (6) can drive the locking mechanism to fix the box cover (2) on one side of the box body (1), and the rotating shaft (6) is connected with a power-off component to connect electrical equipment inside the box body (1) to a power supply in the process of fixing the box cover (2) on one side of the box body (1);
the locking mechanism comprises four locking screw rods (4) which are rotatably arranged at four corners of one side of the box cover (2) facing the interior of the box body (1) and fixed thread sleeves (5) which are fixed at the four corners of the interior of the box body (1) and correspond to the four locking screw rods (4);
the four locking screws (4) are respectively connected with one end of the rotating shaft (6) penetrating out of the inner side of the box cover (2) through four groups of transmission structures;
the transmission structure comprises a driving gear (8) fixed at one end of the rotating shaft (6) penetrating through the inner side of the box cover (2) and four driven gears (9) rotatably mounted on one side of the box cover (2) facing the interior of the box body (1) through a gear shaft (10);
each gear shaft (10) corresponds to one locking screw (4), and the gear shafts (10) and the locking screws (4) which correspond to each other are connected through a transmission piece (11);
the two sides of the interior of the box body (1) are respectively provided with a partition plate (21), the partitions (21) on the two sides divide the interior of the box body (1) into a central area and two side areas, the central area is used for mounting electrical equipment, and the locking screw (4) is located on the side areas when being matched with the fixing screw sleeve (5);
the power on/off assembly comprises a fixed contact (20) fixedly installed in the box body (1) and electrically connected with electrical equipment, and a movable contact (19) movably arranged in the box body (1) and matched with the fixed contact (20), wherein the movable contact (19) is electrically connected with a power supply;
the movable contact (19) is connected with a driving gear (8) in the locking mechanism through a linear driving structure;
the linear driving structure comprises an electric connection gear (12) coaxially fixed on one side, facing the inside of the box body (1), of the driving gear (8), a toothed plate (13) movably arranged on one side, facing the inside of the box body (1), of the box cover (2) through a guide structure, and a clamping structure for connecting the toothed plate (13) and the movable contact (19), and the electric connection gear (12) is meshed with the toothed plate (13);
the clamping structure comprises a mosaic plate clamping piece (16) fixed at the lower part of the toothed plate (13), a push button (17) matched with a clamping groove formed at the lower part of the mosaic plate clamping piece (16), and a track (18) fixed on the inner wall of the box body (1);
the push button (17) is arranged in the track (18) in a sliding manner, and the movable contact (19) is arranged on the push button (17); the upper part of the push button (17) is provided with an extension part protruding towards the box cover (2);
the guide structure comprises a guide groove (15) and a guide plate (14), wherein the guide groove (15) is fixed on one side, facing the inner wall of the box body (1), of the box cover (2), the guide plate (14) is slidably arranged in the guide groove (15) close to one end of the box cover (2), and the guide groove (15) is parallel to the rail (18).
2. The mining flameproof and intrinsically safe electric cabinet according to claim 1, characterized in that a rubber strip (23) is fixed to the edge of one side of the box cover (2) facing the inside of the box body (1), and a sealing groove (22) used for being matched with the rubber strip (23) is formed in the edge of one side of the box body (1) facing the box cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210280526.4A CN114640035B (en) | 2022-03-22 | 2022-03-22 | Mining explosion-proof and intrinsically safe electric cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210280526.4A CN114640035B (en) | 2022-03-22 | 2022-03-22 | Mining explosion-proof and intrinsically safe electric cabinet |
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| Publication Number | Publication Date |
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| CN114640035A CN114640035A (en) | 2022-06-17 |
| CN114640035B true CN114640035B (en) | 2022-10-28 |
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| CN202210280526.4A Active CN114640035B (en) | 2022-03-22 | 2022-03-22 | Mining explosion-proof and intrinsically safe electric cabinet |
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| CN211904977U (en) * | 2020-04-22 | 2020-11-10 | 广州三帕认证技术服务有限公司 | Battery thermal shock testing machine of quick clamping |
| CN212085552U (en) * | 2020-05-22 | 2020-12-04 | 南京铭旭机电有限公司 | Electrolysis device control panel with high safety protection level |
| CN112490080A (en) * | 2020-11-09 | 2021-03-12 | 电科北方智能电气有限公司 | Small-sized circuit breaker |
| CN215070935U (en) * | 2021-05-31 | 2021-12-07 | 南京世乾电气设备有限公司 | A explosion-proof mechanism that can completely cut off dust for block terminal |
| CN215732812U (en) * | 2021-08-17 | 2022-02-01 | 合肥华义电气科技有限公司 | High-voltage cabinet door locking device |
| CN113782355A (en) * | 2021-10-28 | 2021-12-10 | 南通金茂防爆电气有限公司 | Electromechanical locking device of explosion-proof electrical equipment combination |
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| CN114640035A (en) | 2022-06-17 |
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