CN219536471U - Explosion-proof machine case and electrical equipment - Google Patents
Explosion-proof machine case and electrical equipment Download PDFInfo
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- CN219536471U CN219536471U CN202223317874.9U CN202223317874U CN219536471U CN 219536471 U CN219536471 U CN 219536471U CN 202223317874 U CN202223317874 U CN 202223317874U CN 219536471 U CN219536471 U CN 219536471U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses an explosion-proof case, which comprises a case body, a case cover and a connecting piece; the box body is provided with an opening; the box cover is fixed at the opening of the box body through a fixing piece; the box body and the box cover are respectively provided with a first mounting hole and a second mounting hole for mounting the fixing piece; the connecting piece is clamped in the first or second mounting hole and is provided with an inserting hole which is inserted and assembled with the fixing piece; the explosion-proof case has two use states, and in the first use state, the connecting piece is arranged in the middle of one mounting hole; if explosion occurs, the connecting piece overcomes the resistance provided by the connecting piece and slides to one end of the mounting hole close to the other mounting hole, so that the explosion-proof case is switched to a second use state, and a pressure relief gap is formed between the case cover and the case body, thereby realizing pressure relief and explosion prevention, avoiding articles around due to the fact that the case cover flies out, and improving the use safety of the explosion-proof case. The utility model also provides electrical equipment using the explosion-proof machine case.
Description
Technical Field
The utility model relates to the technical field of explosion prevention of electrical equipment, in particular to an explosion-proof case, and relates to electrical equipment.
Background
When the internal power semiconductor devices of the electric equipment such as the photovoltaic inverter, the wind power converter, the energy storage equipment and the like fail, the energy storage components are damaged or abnormal combustible gas is generated due to various faults, severe physical or chemical explosion can occur, and particularly when the capacitor devices in the converter release electrolyte and the combustible gas such as carbon monoxide or hydrogen in burst overvoltage, overtemperature or short circuit, the explosion power is huge, even serious casualties are caused, and an explosion-proof means is needed.
At present, the explosion protection of electrical equipment generally adopts a pressure relief mode: the case of the electrical equipment is provided with a pressure relief opening, and a pressure relief piece with lower strength than the case is arranged at the pressure relief opening to be covered. When the internal pressure of the case increases suddenly, the pressure release piece is damaged to enable the inside and the outside of the case to be communicated, so that a high-pressure gas release channel is formed, and the explosion-proof purpose is achieved.
However, the broken fragments of the pressure release member fly out to damage surrounding articles, so that the safety in use is low.
Therefore, how to avoid explosion inside the case, the pressure release member flies out due to the broken pressure release channel, so as to prevent surrounding objects from being damaged, and improve the use safety, which is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the utility model provides an explosion-proof chassis, wherein a fixing piece passes through an insertion hole of a connecting piece to connect a connecting box body and a box cover, the connecting piece is positioned in the middle of a mounting hole of the box body or the box shell, and when explosion occurs, the box cover flies outwards, so that the fixing piece overcomes the friction force with the inner wall of the mounting hole and moves to another mounting hole, thereby ensuring that the box cover and the box body are separated to form a gap to realize pressure relief and explosion prevention, avoiding the box cover from flying out to harm surrounding objects, and improving the use safety of the explosion-proof chassis. The utility model also provides electrical equipment applying the explosion-proof case, which not only has an explosion-proof function, but also prevents the case cover from flying out during explosion, protects surrounding objects from damage, and has high use safety.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an explosion-proof enclosure, comprising:
the box body is provided with an opening;
the box cover is assembled at the opening of the box body through a fixing piece; the box body is provided with a first mounting hole for mounting the fixing piece, and the box cover is provided with a second mounting hole for mounting the fixing piece;
the connecting piece is clamped in the first mounting hole or the second mounting hole, and is provided with an inserting hole which is in inserting fit with the fixing piece;
the explosion-proof machine case is provided with a first use state and a second use state;
in a first use state, the connecting piece is positioned in the middle of the first mounting hole, the fixing piece is connected with the connecting piece and the box cover, and the box cover is attached to the box body; in a second use state, the connecting piece is positioned at one end, close to the second mounting hole, of the first mounting hole, the fixing piece is connected with the connecting piece and the box cover, and a pressure relief gap is formed between the box cover and the box body; or alternatively
In the first use state, the connecting piece is positioned in the middle of the second mounting hole, the fixing piece is connected with the connecting piece and the box body, and the box cover is attached to the box body; in a second use state, the connecting piece is positioned at one end, close to the first mounting hole, of the second mounting hole, the fixing piece is connected with the connecting piece and the box body, and a pressure relief gap is formed between the box cover and the box body;
the connecting piece can provide resistance when the explosion-proof machine case is switched from a first use state to a second use state.
Preferably, in the explosion-proof case, at least a hole diameter of a preset section in the mounting hole for mounting the connecting piece is gradually reduced, and a smaller diameter end of the preset section is close to another mounting hole; the connecting piece is located in the preset section.
Preferably, in the above explosion-proof chassis, the mounting hole for mounting the connecting piece is a two-stage stepped hole, and the first-stage stepped hole is located between the second-stage stepped hole and another mounting hole; the second-stage stepped hole is the preset section, or a part section of the second-stage stepped hole, which is communicated with the first-stage stepped hole, is the preset section; the aperture of the first-stage stepped hole is smaller than the minimum aperture of the preset section.
Preferably, in the explosion-proof chassis, the fixing member is a bolt, and the aperture of the first step hole is smaller than the outer diameter of the head of the bolt or smaller than the outer dimension of a nut installed on the middle rod of the bolt.
Preferably, in the explosion-proof chassis, the connecting piece is barrel-shaped and comprises an annular side wall, and a bottom plate and a second end opening are fixed at a first end of the annular side wall; the inserting hole is formed in the bottom plate; the first end of the annular sidewall is adjacent to the smaller diameter end of the predetermined section.
Preferably, in the above explosion-proof chassis, the annular side wall is a complete annular side wall, or the annular side wall is provided with a hollow structure.
Preferably, in the explosion-proof chassis, the annular side wall is tapered, and its outer diameter gradually decreases from the second end to the first end.
Preferably, in the explosion-proof chassis, one of the first mounting hole and the second mounting hole matched with the same fixing piece is used for mounting the connecting piece, and the other mounting hole is a threaded hole matched with the fixing piece.
Preferably, in the explosion-proof chassis, the case cover is fixed at the opening of the case body through a plurality of fixing pieces, wherein part or all of the fixing pieces are respectively inserted with the connecting pieces.
An electrical device comprising a chassis, the chassis being an explosion-proof chassis according to any one of the above technical solutions.
The utility model provides an explosion-proof case, which comprises a case body, a case cover and a connecting piece; the box body is provided with an opening; the box cover is assembled at the opening of the box body through the fixing piece; the box body is provided with a first mounting hole for mounting the fixing piece, and the box cover is provided with a second mounting hole for mounting the fixing piece; the connecting piece is clamped in the first mounting hole or the second mounting hole, and the connecting piece is provided with an inserting hole which is inserted and assembled with the fixing piece; the explosion-proof machine case is provided with a first use state and a second use state; in the first use state, the connecting piece is positioned in the middle of the first mounting hole, the fixing piece is connected with the connecting piece and the box cover, and the box cover is attached to the box body; in the second use state, the connecting piece is positioned at one end, close to the second mounting hole, of the first mounting hole, the fixing piece is connected with the connecting piece and the box cover, and a pressure relief gap is formed between the box cover and the box body; or in the first use state, the connecting piece is positioned in the middle of the second mounting hole, the fixing piece is connected with the connecting piece and the box body, and the box cover is attached to the box body; in a second use state, the connecting piece is positioned at one end, close to the first mounting hole, of the second mounting hole, the fixing piece is connected with the connecting piece and the box body, and a pressure relief gap is formed between the box cover and the box body; the connecting piece can provide resistance when the explosion-proof machine case is switched from the first use state to the second use state. .
When the explosion-proof case is applied, if the connecting piece is arranged in the first mounting hole, the fixing piece passes through the inserting hole and the second mounting hole of the connecting piece, so that the case cover is assembled on the case body, and the explosion-proof case is in a first use state; when explosion occurs in the explosion-proof case, the case cover carries the fixing piece to fly outwards together, the fixing piece drives the connecting piece to overcome the resistance provided by the connecting piece to move towards one end, close to the second mounting hole, of the first mounting hole, so that the case cover and the case body are separated to form a pressure relief gap, the explosion-proof case reaches a second use state, and pressure relief and explosion prevention are realized; meanwhile, the connecting piece is clamped in the first mounting hole and cannot be separated from the box body, so that the box cover is always connected with the box body through the fixing piece and the connecting piece, the box cover is prevented from flying out, surrounding objects are prevented from being damaged, and the use safety is high.
If the connecting piece is arranged in the second mounting hole, the fixing piece penetrates through the inserting hole and the first mounting hole of the connecting piece, so that the case cover is assembled on the case body, and the explosion-proof case is in a first use state; when explosion occurs in the explosion-proof case, the case cover flies outwards, the case body enables the connecting piece to keep motionless under the action of the fixing piece, namely the connecting piece overcomes the resistance provided by the connecting piece to move towards the end part, close to the first mounting hole, in the second mounting hole relative to the case cover under the action of the fixing piece, so that the case cover and the case body are separated to form a pressure relief gap, the explosion-proof case reaches a second use state, and pressure relief and explosion prevention are realized; meanwhile, the connecting piece is clamped in the second mounting hole and cannot be separated from the box cover, so that the box cover is always connected with the box body through the fixing piece and the connecting piece, the box cover is prevented from flying out, surrounding objects are prevented from being damaged, and the use safety is high.
When the explosion-proof machine case is in the first use state, the fixing piece penetrates through the insertion hole of the connecting piece to enable the case body to be connected with the case cover, and the connecting piece is positioned in the middle of the mounting hole of the case body or the case cover; when explosion happens, the case cover flies outwards, so that the connecting piece is in the mounting hole to overcome the resistance provided by the connecting piece and move to the other mounting hole, the case cover and the case body are separated to form a pressure relief gap, the second use state is achieved, the explosion prevention is realized, the case cover is ensured to be always connected with the case body through the fixing piece and the connecting piece, surrounding objects are prevented from being damaged due to the fact that the case cover flies out, and the use safety of the explosion prevention case is improved.
In addition, when the explosion happens in the explosion-proof case, the first use state is switched to the second use state, the connecting piece overcomes the resistance provided by the connecting piece and slides in the mounting hole, the buffering effect is achieved, the kinetic energy of the outward flying of the case cover can be reduced, and the case cover is prevented from flying out advantageously.
The utility model also provides electrical equipment applying the explosion-proof case, which not only has an explosion-proof function, but also prevents the case cover from flying out during explosion, protects surrounding objects from being damaged, and has high use safety.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an explosion-proof chassis provided in an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of an explosion-proof case after explosion in the explosion-proof case according to an embodiment of the present utility model;
wherein, in fig. 1-2:
a case cover 101; a second mounting hole 111; a bolt 102; a connecting member 103; a case 104; the first mounting hole 141.
Detailed Description
The embodiment of the utility model discloses an explosion-proof case, which is characterized in that a fixing piece passes through an insertion hole of a connecting piece to enable a connecting case body to be connected with a case cover, the connecting piece is positioned in the middle of a mounting hole of the case body or the case shell, and when explosion happens, the case cover flies outwards, so that the fixing piece overcomes the friction force with the inner wall of the mounting hole and moves to the other mounting hole, the case cover and the case body are separated to form a gap to realize pressure relief and explosion prevention, surrounding objects are prevented from being damaged due to the fact that the case cover flies outwards, and the use safety of the explosion-proof case is improved. The embodiment of the utility model also discloses electrical equipment applying the explosion-proof case, which not only has an explosion-proof function, but also prevents the case cover from flying out during explosion, protects surrounding objects from damage, and has high use safety.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, an embodiment of the present utility model provides an explosion-proof chassis, which includes a chassis 104, a case cover 101, and a connecting member 103; the box 104 is provided with an opening; the case cover 101 is fixed at the opening of the case body 104 by a fixing member; the case 104 is provided with a first mounting hole 141 for mounting the fixing member, and the case cover 101 is provided with a second mounting hole 111 for mounting the fixing member; the connecting piece 103 is clamped in the first mounting hole 141 or the second mounting hole 111, and the connecting piece 103 is provided with an inserting hole which is inserted and matched with the fixing piece; the explosion-proof machine case is provided with a first use state and a second use state; in the first use state, the connecting piece 103 is positioned in the middle of the first mounting hole 141, the fixing piece connects the connecting piece 103 and the case cover 101, and the case cover 101 is attached to the case body 104; in the second use state, the connecting piece 103 is positioned at one end, close to the second mounting hole 111, of the first mounting hole 141, the fixing piece connects the connecting piece 103 and the case cover 101, and a pressure release gap is formed between the case cover 101 and the case body 104; or in the first use state, the connecting piece 103 is positioned in the middle of the second mounting hole 111, the fixing piece connects the connecting piece 103 and the box 104, and the box cover 101 is attached to the box 104; in the second use state, the connecting piece 103 is positioned at one end, close to the first mounting hole 141, of the second mounting hole 111, the fixing piece connects the connecting piece 103 and the box 104, and a pressure release gap is formed between the box cover 101 and the box 104; the connector 103 can provide resistance when the explosion proof enclosure is switched from a first use state to a second use state.
When the explosion-proof case is applied, if the connecting piece 103 is arranged in the first mounting hole 141, the fixing piece passes through the insertion hole and the second mounting hole 111 of the connecting piece 103, so that the case cover 101 is assembled on the case body 104, and the explosion-proof case is in a first use state; when explosion occurs in the explosion-proof case, the case cover 101 carries the fixing piece to fly outwards together, the fixing piece drives the connecting piece 103 to overcome the resistance provided by the connecting piece 103 to move towards one end, close to the second mounting hole 111, in the first mounting hole 141, so that the case cover 101 and the case body 104 are separated to form a pressure relief gap, the explosion-proof case reaches a second use state, and pressure relief and explosion prevention are realized; meanwhile, the connecting piece 103 is clamped in the first mounting hole 141 and cannot be separated from the box 104, so that the box cover 101 is always connected with the box 104 through the fixing piece and the connecting piece 103, the box cover 101 is prevented from flying out, surrounding objects are prevented from being damaged, and the use safety is high.
If the connecting piece 103 is arranged in the second mounting hole 111, the fixing piece passes through the insertion hole of the connecting piece 103 and the first mounting hole 141, so that the case cover 101 is assembled to the case 104, and the explosion-proof case is in a first use state; when explosion occurs in the explosion-proof case, the case cover 101 flies outwards, the case body 104 keeps the connecting piece 103 motionless under the action of the fixing piece, namely, the connecting piece 103 moves towards the end part, close to the first mounting hole 141, in the second mounting hole 111 relative to the case cover 101, against the resistance provided by the connecting piece 103 under the action of the fixing piece, so that the case cover 101 and the case body 104 are separated to form a pressure relief gap, the explosion-proof case reaches a second use state, and pressure relief and explosion prevention are realized; meanwhile, the connecting piece 103 is clamped in the second mounting hole 111 so as not to be separated from the box cover 101, so that the box cover 101 is always connected with the box body 104 through the fixing piece and the connecting piece 103, the box cover 101 is prevented from flying out, surrounding objects are prevented from being damaged, and the use safety is high.
As can be seen, when the explosion-proof chassis provided by the utility model is in the first use state, the fixing piece passes through the insertion hole of the connecting piece 103 to connect the chassis 104 and the chassis cover 101, and the connecting piece 103 is positioned in the middle of the mounting hole of the chassis 104 or the chassis cover 101; when explosion happens, the case cover 101 flies outwards, so that the connecting piece 103 moves to the other mounting hole in the mounting hole against the resistance provided by the connecting piece, the case cover 101 and the case body 104 are separated to form a pressure relief gap, a second use state is achieved, explosion prevention is achieved, the case cover 101 is always connected with the case body 104 through the fixing piece and the connecting piece 103, surrounding objects caused by the fact that the case cover 101 flies out are avoided, and the use safety of the explosion-proof case is improved.
In addition, when the explosion occurs in the explosion-proof case, the first use state is switched to the second use state, and the connecting piece 103 overcomes the resistance provided by the connecting piece to slide in the mounting hole, so that the buffering effect is achieved, the kinetic energy of the case cover 101 flying outwards can be reduced, and the case cover 101 is prevented from flying out advantageously.
Specifically, the resistance provided by the connector 103 includes the friction of the connector 103 with the inner wall of the mounting hole.
In the explosion-proof case, the aperture of at least a preset section in the mounting hole for mounting the connecting piece 103 is gradually reduced, and the smaller diameter end of the preset section is close to the other mounting hole; the connecting piece 103 is positioned at the preset section; the above-described "mounting hole for mounting the connecting member 103" and "another mounting hole" are the first mounting hole 141 and the second mounting hole 111 for mounting the same fixing member, respectively. In this embodiment, the maximum external dimension of the connecting piece 103 is larger than the minimum aperture of the preset section, and the minimum external dimension is smaller than the maximum aperture of the preset section, so as to ensure that the connecting piece 103 can be clamped in the middle of the preset section. The inner wall of the predetermined section may be provided with roughness to provide sufficient friction to the connection 103.
The aperture of the preset section gradually reduces along the direction close to the other mounting hole, gradually increasing extrusion force can be provided for the connecting piece 103 during explosion, so that the resistance required to be overcome by sliding of the connecting piece 103 is gradually increased, the case cover 101 is ensured to be rapidly separated from the case body 104 to form gap pressure relief after overcoming smaller resistance at the beginning of explosion, then the case cover 101 is separated from the case body 104 after overcoming larger resistance, the speed is gradually slowed down, and the effect of avoiding the case cover 101 from flying out is further enhanced.
Specifically, in the above explosion-proof chassis, the mounting hole for mounting the connecting piece 103 is a two-stage stepped hole, and the first-stage stepped hole is located between the second-stage stepped hole and the other mounting hole; the second step hole is a preset section; or, a part section of the second-stage stepped hole, which is communicated with the first-stage stepped hole, is a preset section, as shown in fig. 2; the aperture of the first stage stepped hole is smaller than the minimum aperture of the preset section.
The aperture of the first stepped hole is smaller than the minimum aperture of the preset section, so that the connecting piece 103 is kept in the second stepped hole, clamping in the mounting hole is realized, the mounting hole cannot be separated when explosion happens, the box cover 101 and the box body 104 are ensured to be always connected with the connecting piece 103 through the fixing piece, and the box cover 101 is prevented from flying out.
In the explosion-proof case, the fixing member is a bolt 102, the first mounting hole 141 and the second mounting hole 111 matched with the same bolt 102 can be respectively provided with through holes, and correspondingly, the bolt 102 needs to be assembled with a nut; one of the first and second mounting holes 141 and 111, which are engaged with the same bolt 102, may be provided as a through hole, and the other is provided with a screw hole engaged with the bolt 102, and accordingly, the bolt 102 does not need to be assembled with a nut.
If the head of the bolt 102 is close to the connecting piece 103, the aperture of the first step hole is smaller than the outer diameter of the head of the bolt 102; if the nut to which the bolt 102 is fitted is attached to the connecting member 103, the aperture of the first step hole is set smaller than the outer dimension of the nut to which the shank portion of the bolt 102 is attached.
In the explosion-proof case, the connecting piece 103 is barrel-shaped and comprises an annular side wall, wherein a bottom plate and a second end opening are fixed at a first end of the annular side wall; the inserting hole is formed in the bottom plate; the first end of the annular side wall is close to the smaller diameter end of the preset section, and the second end is close to the larger diameter end of the preset section. The length dimension of the preset section in the axial direction is larger than the dimension of the connecting piece 103 in the axial direction of the mounting hole.
The annular side wall can be set to be a complete annular side wall, or the annular side wall is provided with a hollow structure, and the specific form of the hollow structure is not limited. The annular side wall is conical, and the outer diameter of the annular side wall gradually decreases from the second end to the first end; of course, the annular side wall may also be provided in a cylindrical shape or the like, and the present embodiment is not limited thereto.
Specifically, in the explosion-proof chassis, one of the first mounting hole 141 and the second mounting hole 111 that are matched with the same fixing piece is used for mounting the connecting piece 103, and the other mounting hole is a threaded hole that is matched with the fixing piece, as shown in fig. 1.
In the explosion-proof case, the case cover 101 is fixed at the opening of the case body 104 by a plurality of fixing members, wherein part or all of the fixing members are respectively inserted with the connecting members 103.
The explosion-proof chassis provided by the embodiment can achieve several times of energy absorption effect by modifying the size and thickness of the connecting piece 103, and realizes matching of different explosion energies.
The embodiment of the utility model also provides an electrical device, which comprises a case, wherein the case is the explosion-proof case provided by the embodiment.
The electrical device may be configured as a photovoltaic inverter, a wind power converter, an energy storage device, or the like, and the type of the electrical device is not limited in this embodiment.
The electrical equipment provided by the embodiment is applied to the explosion-proof case provided by the embodiment, not only has an explosion-proof function, but also prevents the case cover 101 from flying out during explosion, protects surrounding objects from being damaged, and has high use safety. Of course, the electrical device provided in this embodiment also has other effects related to the explosion-proof chassis provided in the foregoing embodiment, which are not described herein.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An explosion-proof enclosure, comprising:
the box body is provided with an opening;
the box cover is assembled at the opening of the box body through a fixing piece; the box body is provided with a first mounting hole for mounting the fixing piece, and the box cover is provided with a second mounting hole for mounting the fixing piece;
the connecting piece is clamped in the first mounting hole or the second mounting hole, and is provided with an inserting hole which is in inserting fit with the fixing piece;
the explosion-proof machine case is provided with a first use state and a second use state;
in a first use state, the connecting piece is positioned in the middle of the first mounting hole, the fixing piece is connected with the connecting piece and the box cover, and the box cover is attached to the box body; in a second use state, the connecting piece is positioned at one end, close to the second mounting hole, of the first mounting hole, the fixing piece is connected with the connecting piece and the box cover, and a pressure relief gap is formed between the box cover and the box body; or alternatively
In the first use state, the connecting piece is positioned in the middle of the second mounting hole, the fixing piece is connected with the connecting piece and the box body, and the box cover is attached to the box body; in a second use state, the connecting piece is positioned at one end, close to the first mounting hole, of the second mounting hole, the fixing piece is connected with the connecting piece and the box body, and a pressure relief gap is formed between the box cover and the box body;
the connecting piece can provide resistance when the explosion-proof machine case is switched from a first use state to a second use state.
2. The explosion-proof enclosure according to claim 1, wherein at least a predetermined section of the mounting holes for mounting the connection members has a gradually decreasing aperture, and an end of the predetermined section having a smaller diameter is adjacent to the other mounting hole; the connecting piece is located in the preset section.
3. The explosion-proof enclosure of claim 2, wherein the mounting hole for mounting the connector is a two-stage stepped hole, the first-stage stepped hole being located between the second-stage stepped hole and another mounting hole; the second-stage stepped hole is the preset section, or a part section of the second-stage stepped hole, which is communicated with the first-stage stepped hole, is the preset section; the aperture of the first-stage stepped hole is smaller than the minimum aperture of the preset section.
4. The explosion-proof enclosure of claim 3, wherein the fixing member is a bolt, and the aperture of the first step hole is smaller than the outer diameter of the head of the bolt or smaller than the outer dimension of a nut mounted on the middle shaft of the bolt.
5. The explosion-proof chassis according to claim 2, wherein the connecting piece is barrel-shaped and comprises an annular side wall, and a bottom plate and a second end opening are fixed at a first end of the annular side wall; the inserting hole is formed in the bottom plate; the first end of the annular sidewall is adjacent to the smaller diameter end of the predetermined section.
6. The explosion-proof enclosure of claim 5, wherein the annular side wall is a complete annular side wall or the annular side wall is provided with a hollowed-out structure.
7. The explosion proof enclosure of claim 5, wherein the annular sidewall is tapered and tapers in outer diameter from the second end to the first end.
8. The explosion proof enclosure of claim 2, wherein one of the first and second mounting holes is configured to mount the connector and the other mounting hole is a threaded hole configured to mate with the fastener.
9. The explosion-proof chassis according to claim 1, wherein the case cover is fixed to the opening of the case body by a plurality of fixing members, wherein part or all of the fixing members are respectively inserted with the connecting members.
10. An electrical device comprising a housing, wherein the housing is an explosion proof housing as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223317874.9U CN219536471U (en) | 2022-12-07 | 2022-12-07 | Explosion-proof machine case and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223317874.9U CN219536471U (en) | 2022-12-07 | 2022-12-07 | Explosion-proof machine case and electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219536471U true CN219536471U (en) | 2023-08-15 |
Family
ID=87583180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223317874.9U Active CN219536471U (en) | 2022-12-07 | 2022-12-07 | Explosion-proof machine case and electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219536471U (en) |
-
2022
- 2022-12-07 CN CN202223317874.9U patent/CN219536471U/en active Active
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