Explosion-proof box

Abstract

The invention discloses an explosion-proof box, and belongs to the technical field of mining. The explosion-proof box comprises a box body and a box cover. The box body comprises a main body and a first framework, and the first framework is embedded in the main body. The box cover comprises a cover body and a second framework, the second framework is embedded in the cover body, the cover body is connected with the main body, and the cover body and the main body define an installation cavity used for installing elements. Through the arrangement of the first framework, the structural strength of the box body is enhanced, and through the arrangement of the second framework, the structural strength of the box cover is enhanced, so that the overall structural strength of the explosion-proof box is improved, and the durability and safety of the explosion-proof box are ensured. When the underground environment is severe, the air humidity is high, corrosive gas exists in the air and the like, the first framework and the second framework are embedded in the main body and the cover body respectively, so that the first framework and the second framework are not exposed outside, and the situations of oxidation, corrosion and the like caused by exposure of the first framework and the second framework outside can be avoided to a certain extent; and the service lives of the first framework and the second framework are ensured.

Description

Technical Field

[0001] This application belongs to the technical field of mining, and particularly relates to an explosion-proof box. Background Art

[0002] Since mechanized mining is adopted underground in coal mines, a large number of electrical control components need to be used in supporting. When these electrical components are operating, electric sparks may be generated. Once electric sparks are generated, it is easy to ignite combustible gases such as gas in coal mines, leading to major accidents such as explosions.

[0003] In order to prevent the electric sparks generated during the operation of these electrical components from igniting combustible gases such as gas in coal mines and causing accidents such as explosions. These electrical components are usually installed in an explosion-proof box, and the explosion-proof box isolates the electrical components from the outside gas to ensure the safety of coal mine production.

[0004] In related technologies, the strength of the explosion-proof box is low, it is easy to be damaged, and there are potential safety hazards. Summary of the Invention

[0005] This application aims to at least solve to some extent the technical problem of the low strength of the explosion-proof box in related technologies. For this reason, this application provides an explosion-proof box.

[0006] An explosion-proof box provided by an embodiment of this application includes:

[0007] A box body, including a main body and a first skeleton, and the first skeleton is embedded in the main body;

[0008] A box cover, including a cover body and a second skeleton, and the second skeleton is embedded in the cover body. The cover body is connected to the main body and together with the main body encloses an installation cavity for installing components.

[0009] In some embodiments, the main body has a first accommodation cavity, and the first skeleton is disposed in the first accommodation cavity; and / or, the cover body has a second accommodation cavity, and the second skeleton is disposed in the second accommodation cavity.

[0010] In some embodiments, the first skeleton includes a first strengthening portion and a first connecting portion. The first strengthening portion is embedded in the main body and is hermetically connected to the main body. The first connecting portion is wound around the outside of the first strengthening portion, hermetically connected to the first strengthening portion and located outside the main body;

[0011] The second skeleton includes a second strengthening portion and a second connecting portion. The second strengthening portion is embedded in the cover body and is hermetically connected to the cover body. The second connecting portion is wound around the outside of the second strengthening portion, hermetically connected to the second strengthening portion and located outside the cover body; the first connecting portion and the second connecting portion are opposite to each other;

[0012] The explosion-proof box further includes a sealing ring, which is located between the first connecting portion and the second connecting portion and is in sealed contact with both the first connecting portion and the second connecting portion.

[0013] In some embodiments, the end face of the cover body facing the main body has a limiting protrusion, the end face of the main body facing the cover body has a limiting groove, the second connecting portion is arranged on the end face of the limiting protrusion facing the bottom wall of the limiting groove, the first connecting portion is arranged on the bottom wall of the limiting groove, and both the second connecting portion and the limiting protrusion are located in the limiting groove.

[0014] In some embodiments,

[0015] The sealing ring is a conductive sealing ring, both the first skeleton and the second skeleton are conductive skeletons, the explosion-proof box further includes a grounding post, one end of the grounding post is connected to the first skeleton and / or the second skeleton, and the other end is located outside the main body.

[0016] In some embodiments, the explosion-proof box further includes a connecting post, the connecting post is a conductive connecting post, one end of the connecting post is connected to the first skeleton and / or the second skeleton, and the other end is located in the installation cavity for connecting the component.

[0017] In some embodiments, both the first skeleton and the second skeleton are shielding skeletons, the first skeleton and the second skeleton enclose a shielding cavity, and the installation cavity is located in the shielding cavity.

[0018] In some embodiments, the explosion-proof box further includes a sealing ring, which is located between the main body and the cover body and is in sealed contact with both the main body and the cover body.

[0019] In some embodiments, one of the end face of the main body facing the cover body and the end face of the cover body facing the main body has a limiting groove, the other has a limiting protrusion, the limiting protrusion is located in the limiting groove, and the sealing ring is located on the bottom wall of the limiting groove and is in sealed contact with both the limiting protrusion and the bottom wall of the limiting groove.

[0020] In some embodiments, both the first skeleton and the second skeleton are conductive skeletons and are electrically connected, the explosion-proof box further includes a grounding post, one end of the grounding post is connected to the first skeleton, and the other end is located outside the main body.

[0021] The present invention has at least the following beneficial effects: Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 Shows the front view of the flameproof box in one or more embodiments of the present application.

[0024] Figure 2 Shows the top view of the flameproof box in one or more embodiments of the present application.

[0025] Figure 3 Shows Figure 2 The cross-sectional view in the A-A direction of

[0026] Figure 4 Shows Figure 3 The enlarged view at B in

[0027] Figure 5 Shows Figure 2 The schematic diagram after hiding the box cover.

[0028] Figure 6 Shows Figure 5 The cross-sectional view in the C-C direction of

[0029] Figure 7 Shows Figure 6 The enlarged view at D in

[0030] Figure 8 Shows the top view when the first skeleton and the connecting column of the flameproof box are connected in one or more embodiments of the present application.

[0031] Figure 9 Shows the front view when the first skeleton and the grounding column of the flameproof box are connected in one or more embodiments of the present application.

[0032] Figure 10 Shows the top view of the box cover of the flameproof box in one or more embodiments of the present application.

[0033] Figure 11 Shows Figure 10 The cross-sectional view in the E-E direction of

[0034] Figure 12 Shows Figure 11 The enlarged view at F in

[0035] Figure 13 Shows the bottom view of the box cover of the flameproof box in one or more embodiments of the present application.

[0036] Figure 14 The top view of the second skeleton of the flameproof box in one or more embodiments of the present application is shown.

[0037] Figure 15 Shown is Figure 14 The cross-sectional view in the direction of G-G in

[0038] Figure 16 The schematic structural view of the sealing ring of the flameproof box in one or more embodiments of the present application arranged between the main body and the cover is shown.

[0039] Figure 17 Shown is Figure 16 The enlarged view at H in

[0040] Reference numerals:

[0041] 100 - Flameproof box, 100a - Installation cavity, 100b - Shielding cavity, 100c - Avoidance hole, 115 - Box body, 110 - Main body, 110a - Limit groove, 120 - First skeleton, 120a - First connection hole, 121 - First strengthening part, 122 - First connection part, 135 - Box cover, 130 - Cover body, 131 - Limit convex, 140 - Second skeleton, 140a - Second connection hole, 141 - Second strengthening part, 142 - Second connection part, 150 - Sealing ring, 160 - Grounding post, 170 - Connection post, 180 - Connecting joint. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0043] It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement conditions, etc. between components in a certain specific posture. If this specific posture changes, then the directional indication also changes accordingly.

[0044] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] In recent years, with the continuous progress of materials science and technology, significant achievements have been made in the research of non-metallic materials such as epoxy resin and glass fiber composites in the field of mine explosion-proof boxes. The explosion-proof boxes made of these materials have the characteristics of light weight and small weight, but usually have the technical problem of low strength and are easily damaged due to bumps and other reasons.

[0047] An embodiment of the present application provides an explosion-proof box 100, which can at least to some extent solve the technical problem of low strength of the explosion-proof box 100 in the related art.

[0048] The present application will be described below with reference to the accompanying drawings and specific embodiments:

[0049] As Figure 1 、 Figure 2 and Figure 3 shown, the explosion-proof box 100 includes a box body 115 and a box cover 135. The box body 115 includes a main body 110 and a first skeleton 120, and the first skeleton 120 is embedded in the main body 110. The box cover 135 includes a cover body 130 and a second skeleton 140, and the second skeleton 140 is embedded in the cover body 130. The cover body 130 is connected to the main body 110 and together with the main body 110 encloses an installation cavity 100a for installing components.

[0050] The first skeleton 120 is embedded in the main body 110, that is to say, the first skeleton 120 is buried in the main body 110, and the main body 110 is wrapped outside the first skeleton 120; similarly, the second skeleton 140 is embedded in the cover body 130, that is to say, the second skeleton 140 is buried in the cover body 130, and the cover body 130 is wrapped outside the second skeleton 140.

[0051] The cover body 130 and the main body 110 can be connected by means such as bolt connection, snap connection, bonding, etc., which are not limited in the present application. In some embodiments, the cover body 130 and the main body 110 are connected together by multiple sets of bolts and nuts.

[0052] Through the provision of the first skeleton 120, the structural strength of the box body 115 is enhanced. Through the provision of the second skeleton 140, the structural strength of the box cover 135 is enhanced, thereby improving the overall structural strength of the explosion-proof box 100 and ensuring the durability and safety of the explosion-proof box 100. The underground environment is relatively harsh, with a relatively high air humidity and corrosive gases in the air, etc. In this application, the first skeleton 120 and the second skeleton 140 are respectively embedded in the main body 110 and the cover body 130, so that the first skeleton 120 and the second skeleton 140 are not exposed outside, which can, to a certain extent, prevent the first skeleton 120 and the second skeleton 140 from being oxidized, corroded, etc. due to being exposed outside, ensuring the service life of the first skeleton 120 and the second skeleton 140, helping to reduce the maintenance requirements of the explosion-proof box 100, and extending the service life of the explosion-proof box 100.

[0053] The materials of the main body 110 and the cover body 130 are diverse. They can be metal materials, such as Q235-A steel, cast iron, etc. Of course, they can also be non-metal materials, such as fiberglass composite materials, epoxy resins, etc., which are not limited in this application.

[0054] In some embodiments, both the main body 110 and the cover body 130 are made of fiberglass composite materials. The fiberglass composite materials include the following raw materials: epoxy resin, carbon fiber, fiberglass, and carbon nanotube conductive tubes. The main body 110 and the cover body 130 made of fiberglass composite materials can meet the requirements of surface anti-static, flame retardancy, heat resistance and cold resistance tests, impact tests and drop tests, surface resistance measurement, combustion resistance tests, and flame burning tests. And compared with the main body 110 and the cover body 130 made of metal materials such as cast iron or cast steel, the main body 110 and the cover body 130 made of fiberglass composite materials have a greatly reduced weight, which helps to reduce the overall weight of the explosion-proof box 100.

[0055] In some embodiments, the fiberglass composite material is composed of the following raw materials: 10-15 parts of epoxy resin, 30-35 parts of carbon fiber, 50-60 parts of fiberglass, and 0.001-0.0015 parts of carbon nanotube conductive tubes.

[0056] In some embodiments, the main body 110 has a first accommodation cavity, and the first skeleton 120 is disposed in the first accommodation cavity; and / or, the cover body 130 has a second accommodation cavity, and the second skeleton 140 is disposed in the second accommodation cavity.

[0057] The first skeleton 120 is installed in the first accommodation cavity so that the first skeleton 120 is embedded in the main body 110, and the second skeleton 140 is installed in the second accommodation cavity so that the second skeleton 140 is embedded in the cover body 130.

[0058] The main body 110 can be formed by connecting multiple components. After the multiple components are connected, they enclose a first accommodating cavity. Similarly, the cover 130 can also be formed by connecting multiple components. After the multiple components are connected, they enclose a second accommodating cavity.

[0059] In some embodiments, the main body 110 is formed on the outside of the first skeleton 120 by using an SMC (sheet molding compound) molding process, and the cover 130 is formed on the outside of the second skeleton 140 by using an SMC molding process.

[0060] In some embodiments, the main body 110 is formed on the outside of the first skeleton 120 by using an injection molding process, and the cover 130 is also formed on the outside of the second skeleton 140 by using an injection molding process.

[0061] Such as Figure 8 and Figure 9 As shown in

[0062] such as Figure 14 and Figure 15 shown, in some embodiments, the first skeleton 120 is provided with a plurality of first connection holes 120a, so that when the main body 110 is formed by using a molding process such as SMC molding or injection molding, the raw material for forming the main body 110 can penetrate into the first connection holes 120a, which helps to improve the connection strength between the first skeleton 120 and the main body 110.

[0063] The materials of the first skeleton 120 and the second skeleton 140 are diverse. They can be metal materials or non-metal materials.

[0064] Such as Figure 3 shown, in some embodiments, both the first skeleton 120 and the second skeleton 140 are shielding skeletons. The first skeleton 120 and the second skeleton 140 enclose a shielding cavity 100b, and the installation cavity 100a is located inside the shielding cavity 100b.

[0065] That is to say, both the first skeleton 120 and the second skeleton 140 are made of materials capable of shielding electromagnetic interference. The types of their materials are diverse and are not limited in this application. They can be metal materials, such as copper, aluminum, silver, etc.; they can also be magnetic materials, such as ferrite, soft magnetic materials, etc.; they can also be composite materials, such as nano-composite materials (such as copper-plated carbon fiber composite materials), metal-coated composite materials (such as nano-ferrite-filled polymers), etc.

[0066] The first skeleton 120 and the second skeleton 140 enclose a shielding cavity 100b, and the installation cavity 100a is located within the shielding cavity 100b, so that the electrical components installed in the installation cavity 100a can be protected from external electromagnetic interference, improving the electromagnetic interference resistance of the flameproof box 100 and helping to ensure the continuous and stable operation of the electrical components.

[0067] It can be understood that the installation cavity 100a should be a closed chamber, and external combustible gases such as gas cannot enter the installation cavity 100a to prevent the electric sparks generated by the electrical components in the installation cavity 100a from igniting combustible gases such as gas and causing an explosion.

[0068] In some embodiments, after the box body 115 and the cover body 130 are connected, the box body 115 and the cover body 130 are in sealing contact, so that the installation cavity 100a is a closed chamber. The sealing contact between the box body 115 and the cover body 130 has relatively high requirements for the machining accuracy and material of the surfaces of the box body 115 and the cover body 130.

[0069] Such as Figure 16 and Figure 17 As shown, in some embodiments, the flameproof box 100 further includes a sealing ring 150. The sealing ring 150 is located between the main body 110 and the cover body 130 and is in sealing contact with both the main body 110 and the cover body 130.

[0070] After the main body 110 and the cover body 130 are connected, the main body 110 and the cover body 130 compress the sealing ring 150. The sealing ring 150 is in sealing contact with both the main body 110 and the cover body 130, making the installation cavity 100a a closed chamber. External combustible gases such as gas cannot enter the installation cavity 100a through the gap between the main body 110 and the cover body 130, preventing the electric sparks generated during the operation of the electrical components from igniting gases such as gas and improving the safety performance of the flameproof box 100. By providing the sealing ring 150 to seal the gap between the main body 110 and the cover body 130, the requirements for the machining accuracy of the surfaces of the box body 115 and the cover body 130 can be reduced, facilitating the machining of the flameproof box 100.

[0071] Such as Figure 16 As shown, in some embodiments, one of the end face of the main body 110 facing the cover body 130 and the end face of the cover body 130 facing the main body 110 has a limiting groove 110a, and the other has a limiting protrusion 131. The limiting protrusion 131 is located within the limiting groove 110a, and the sealing ring 150 is located at the bottom wall of the limiting groove 110a and is in sealing contact with both the limiting protrusion 131 and the bottom wall of the limiting groove 110a.

[0072] It can be that the end face of the main body 110 facing the cover body 130 (i.e., Figure 17 the lower end face inFigure 17 The upper end surface (in [description]) has a limiting groove 110a; alternatively, the end surface of the main body 110 facing the cover body 130 has a limiting groove 110a, and the end surface of the cover body 130 facing the main body 110 has a limiting protrusion 131.

[0073] After the main body 110 and the cover body 130 are connected, the limiting protrusion 131 presses the sealing ring 150 below, so that the sealing ring 150 is in sealing contact with the lower end surface of the limiting protrusion 131 and the bottom wall of the limiting groove 110a.

[0074] The limiting groove 110a can limit the sealing ring 150, so that the sealing ring 150 is in an accurate position, preventing situations such as the displacement of the sealing ring 150 and the failure of the limiting protrusion 131 to press the sealing ring 150, which may lead to sealing failure. The limiting protrusion 131 is located in the limiting groove 110a, and the limiting groove 110a limits the limiting protrusion 131, which can facilitate the alignment of the cover body 130 and the main body 110, thus facilitating the connection of the cover body 130 and the main body 110.

[0075] In some embodiments, the lower end surface of the cover body 130 is provided with a limiting protrusion 131, and the upper end surface of the main body 110 is provided with a limiting groove 110a.

[0076] In some embodiments, both the first skeleton 120 and the second skeleton 140 are conductive skeletons, and the first skeleton 120 and the second skeleton 140 are electrically connected. The flameproof box 100 further includes a grounding post 160, one end of the grounding post 160 is connected to the first skeleton 120, and the other end is located outside the main body 110.

[0077] The first skeleton 120, the second skeleton 140, and the grounding post 160 can all conduct electricity and can be made of metal materials such as copper, aluminum, and iron. The first skeleton 120 and the second skeleton 140 are in contact with each other or connected together through conductive components so that the first skeleton 120 and the second skeleton 140 are electrically connected. One end of the grounding post 160 is connected to the first skeleton 120, and the other end of the grounding post 160 extends out of the main body 110 and is located outside the main body 110 and is used for grounding.

[0078] The electrical components in the installation cavity 100a may leak current and generate static electricity accumulation. Through the above design, the leaked current and generated static electricity are transmitted to the first skeleton 120 and the second skeleton 140, and finally quickly introduced into the ground through the grounding post 160, preventing the generation of dangerous voltages and triggering safety accidents, and improving the safety performance of the flameproof box 100.

[0079] In some embodiments, the flameproof box 100 further includes a connecting post 170. The connecting post 170 is a conductive connecting post 170. One end of the connecting post 170 is connected to the first skeleton 120, and the other end is located in the installation cavity 100a and is used for connecting components.

[0080] The connecting column 170 can conduct electricity and can be made of metal materials such as copper, aluminum, and iron. After such a design, when the main body 110 and the cover 130 are made of non-conductive materials such as epoxy resin, current, static electricity, etc. can be conducted to the first skeleton 120 and the second skeleton 140 through the connecting column 170, and finally quickly introduced into the ground through the grounding column 160.

[0081] Threaded holes or the like can be provided on the connecting column 170, and components in the installation cavity 100a can be connected and installed through the threaded holes or the like.

[0082] Such as Figures 4 to 15 As shown, in some embodiments, the first skeleton 120 includes a first reinforcing portion 121 and a first connecting portion 122. The first reinforcing portion 121 is embedded in the main body 110 and is hermetically connected to the main body 110. The first connecting portion 122 is wound around the outside of the first reinforcing portion 121, is hermetically connected to the first reinforcing portion 121 and is located outside the main body 110. The second skeleton 140 includes a second reinforcing portion 141 and a second connecting portion 142. The second reinforcing portion 141 is embedded in the cover 130 and is hermetically connected to the cover 130. The second connecting portion 142 is wound around the outside of the second reinforcing portion 141, is hermetically connected to the second reinforcing portion 141 and is located outside the cover 130. The first connecting portion 122 and the second connecting portion 142 are opposite to each other. The explosion-proof box 100 further includes a sealing ring 150. The sealing ring 150 is located between the first connecting portion 122 and the second connecting portion 142 and is in sealing contact with both the first connecting portion 122 and the second connecting portion 142.

[0083] It should be noted that the first reinforcing portion 121 is embedded in the main body 110 and is in sealing contact with the main body 110 to prevent external combustible gas from entering the installation cavity 100a through the gap between the first reinforcing portion 121 and the main body 110. The second reinforcing portion 141 is embedded in the cover 130 and is in sealing contact with the cover 130 to prevent external combustible gas from entering the installation cavity 100a through the gap between the second reinforcing portion 141 and the cover 130.

[0084] The first connecting portion 122 and the second connecting portion 142 are opposite to each other. The sealing ring 150 is in sealing contact with both the first connecting portion 122 and the second connecting portion 142. The sealing ring 150 seals the gap between the first connecting portion 122 and the second connecting portion 142. After such a design, under the combined action of the main body 110, the cover 130, the first skeleton 120, the second skeleton 140, and the sealing ring 150, the closed installation cavity 100a is enclosed.

[0085] In some embodiments, first connecting holes 120a are provided on both the first reinforcing portion 121 and the first connecting portion 122.

[0086] In some embodiments, second connecting holes 140a are provided on both the second reinforcing portion 141 and the second connecting portion 142. Such asFigure 4 As shown, in some embodiments, the end face of the cover body 130 facing the main body 110 has a limiting convex 131, the end face of the main body 110 facing the cover body 130 has a limiting groove 110a, the second connecting portion 142 is arranged on the end face of the limiting convex 131 facing the bottom wall of the limiting groove 110a, the first connecting portion 122 is arranged on the bottom wall of the limiting groove 110a, and both the second connecting portion 142 and the limiting convex 131 are located in the limiting groove 110a.

[0087] As Figure 4 As shown, the second connecting portion 142 is arranged on the lower end face of the limiting convex 131, the first connecting portion 122 is arranged on the bottom wall of the limiting groove 110a, and the sealing ring 150 is located between the first connecting portion 122 and the second connecting portion 142. After the main body 110 and the cover body 130 are connected, the first connecting portion 122 and the second connecting portion 142 clamp the sealing ring 150, and the sealing ring 150 is in sealing contact with both the first connecting portion 122 and the second connecting portion 142.

[0088] After the limiting groove 110a is provided, the limiting groove 110a can limit the sealing ring 150, so that the sealing ring 150 is in an accurate position, preventing situations such as the displacement of the sealing ring 150 and the second connecting portion 142 being unable to tightly press the sealing ring 150, which may lead to sealing failure. The limiting convex 131 is located in the limiting groove 110a, and the limiting groove 110a limits the limiting convex 131, which can facilitate the alignment of the cover body 130 and the main body 110 and the connection between the cover body 130 and the main body 110.

[0089] In some embodiments, the sealing ring 150 is a conductive sealing ring 150, both the first skeleton 120 and the second skeleton 140 are conductive skeletons, and the explosion-proof box 100 further includes a grounding post 160. One end of the grounding post 160 is connected to the first skeleton 120 and / or the second skeleton 140, and the other end is located outside the main body 110.

[0090] The sealing ring 150, the first skeleton 120, the second skeleton 140, and the grounding post 160 can all conduct electricity. The first skeleton 120, the second skeleton 140, and the grounding post 160 can be made of metal materials such as copper, aluminum, and iron. The sealing ring 150 can use materials such as silicone rubber, fluororubber, and polyurethane as the base materials for exerting the sealing function, and silver nanowires, silver-plated glass microspheres, graphene, etc. are filled in the base materials as the conductive fillers for exerting conductivity, so that the sealing ring 150 can not only play a role in deformation sealing but also play a role in conducting electricity, which is not limited in this application.

[0091] The grounding post 160 can be connected to the first skeleton 120, or to the second skeleton 140, or simultaneously connected to both the first skeleton 120 and the second skeleton 140. The other end of the grounding post 160 is located outside the main body 110 and is used for grounding. The number of grounding posts 160 can be one or multiple, and is not limited in this application.

[0092] The electrical components in the installation cavity 100a may leak current and generate static electricity accumulation. Through the above design, the leaked current and generated static electricity are transmitted to the first skeleton 120, the second skeleton 140, and the sealing ring 150, and finally quickly introduced into the ground through the grounding post 160, preventing the generation of dangerous voltages and triggering safety accidents, and improving the safety performance of the explosion-proof box 100.

[0093] In some embodiments, one grounding post 160 is provided, as Figure 9 shown.

[0094] In some embodiments, the explosion-proof box 100 further includes a connecting post 170. The connecting post 170 is a conductive connecting post 170. One end of the connecting post 170 is connected to the first skeleton 120 and / or the second skeleton 140, and the other end is located in the installation cavity 100a and is used for connecting components.

[0095] The connecting post 170 can conduct electricity and can be made of metal materials such as copper, aluminum, and iron. After such design, the leaked current and generated static electricity accumulation are transmitted to the first skeleton 120 or the second skeleton 140 through the connecting post 170, and finally introduced into the ground through the grounding post 160. After such design, when the main body 110 and the cover 130 are made of non-conductive materials such as epoxy resin, the current and static electricity can also be smoothly introduced into the ground, facilitating the use of the explosion-proof box 100.

[0096] Threaded holes or the like can be opened on the connecting post 170 to connect the components in the installation cavity 100a through the threaded holes or the like.

[0097] As Figure 8 shown, in some embodiments, multiple connecting posts 170 are provided, and one end of each connecting post 170 is connected to the first skeleton 120.

[0098] As Figure 9 shown, in some embodiments, the box body 115 is provided with an avoidance hole 100c for avoiding the connection joint 180. The connection joint 180 is used to electrically connect the electrical components inside the explosion-proof box 100 to the electrical components outside the explosion-proof box 100. Its structure is diverse and is well-known to those skilled in the art, and will not be elaborated here.

[0099] As Figure 1 and Figure 2As shown, in some embodiments, the flameproof box 100 further includes a connecting joint 180, and the connecting joint 180 is installed in the avoidance hole 100c.

[0100] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0101] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0102] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An explosion-proof box, characterized in that, Including: A box body (115), comprising a main body (110) and a first skeleton (120), wherein the first skeleton (120) is embedded in the main body (110); A box cover (135), comprising a cover body (130) and a second skeleton (140), wherein the second skeleton (140) is embedded in the cover body (130), the cover body (130) is connected to the main body (110), and together with the main body (110) encloses an installation cavity (100a) for installing components.

2. The flameproof box according to claim 1, wherein The main body (110) has a first accommodation cavity, and the first skeleton (120) is disposed in the first accommodation cavity; and / or, the cover body (130) has a second accommodation cavity, and the second skeleton (140) is disposed in the second accommodation cavity.

3. The flameproof box according to claim 1, characterized in that, The first skeleton (120) includes a first strengthening portion (121) and a first connecting portion (122), the first strengthening portion (121) is embedded in the main body (110) and is hermetically connected to the main body (110), and the first connecting portion (122) is wound around the outside of the first strengthening portion (121), hermetically connected to the first strengthening portion (121) and located outside the main body (110); The second skeleton (140) includes a second strengthening portion (141) and a second connecting portion (142), the second strengthening portion (141) is embedded in the cover body (130) and is hermetically connected to the cover body (130), and the second connecting portion (142) is wound around the outside of the second strengthening portion (141), hermetically connected to the second strengthening portion (141) and located outside the cover body (130); the first connecting portion (122) and the second connecting portion (142) are opposite to each other; The explosion-proof box (100) further includes a sealing ring (150), the sealing ring (150) is located between the first connecting portion (122) and the second connecting portion (142), and is in sealing contact with both the first connecting portion (122) and the second connecting portion (142).

4. The flameproof box according to claim 3, wherein, The end face of the cover body (130) facing the main body (110) has a limit protrusion (131), the end face of the main body (110) facing the cover body (130) has a limit groove (110a), the second connecting portion (142) is disposed on the end face of the limit protrusion (131) facing the bottom wall of the limit groove (110a), the first connecting portion (122) is disposed on the bottom wall of the limit groove (110a), and both the second connecting portion (142) and the limit protrusion (131) are located in the limit groove (110a).

5. The explosion-proof box according to claim 3, wherein The sealing ring (150) is a conductive sealing ring (150), both the first skeleton (120) and the second skeleton (140) are conductive skeletons, and the explosion-proof box (100) further includes a grounding post (160), one end of the grounding post (160) is connected to the first skeleton (120) and / or the second skeleton (140), and the other end is located outside the main body (110).

6. The flameproof box according to claim 5, characterized in that, The explosion-proof box (100) further includes a connecting post (170), the connecting post (170) being an electrically conductive connecting post (170). One end of the connecting post (170) is connected to the first skeleton (120) and / or the second skeleton (140), and the other end is located in the installation cavity (100a) for connecting the component.

7. The flameproof enclosure according to claim 1 or 2, characterized in that Both the first skeleton (120) and the second skeleton (140) are shielding skeletons. The first skeleton (120) and the second skeleton (140) enclose a shielding cavity (100b), and the installation cavity (100a) is located within the shielding cavity (100b).

8. The flameproof box according to claim 1 or 2, characterized in that, The explosion-proof box (100) further includes a sealing ring (150), the sealing ring (150) being located between the main body (110) and the cover body (130) and being in sealed contact with both the main body (110) and the cover body (130).

9. The flameproof box according to claim 8, characterized in that, One of the end face of the main body (110) facing the cover body (130) and the end face of the cover body (130) facing the main body (110) has a limiting groove (110a), and the other has a limiting protrusion (131); the limiting protrusion (131) is located within the limiting groove (110a), and the sealing ring (150) is located at the bottom wall of the limiting groove (110a) and is in sealed contact with both the limiting protrusion (131) and the bottom wall of the limiting groove (110a).

10. The flameproof enclosure according to claim 1 or 2, characterized in that, Both the first skeleton (120) and the second skeleton (140) are electrically conductive skeletons, and the first skeleton (120) and the second skeleton (140) are electrically connected. The explosion-proof box (100) further includes a grounding post (160), one end of the grounding post (160) being connected to the first skeleton (120) and the other end being located outside the main body (110).

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