Explosion-proof mobile audio-video recording device

Abstract

The present application relates to the technical fields of mobile audio and video recording, and discloses an explosion-proof mobile audio and video recording device, which comprises a supporting bottom plate, a supporting shell is arranged at the bottom of the supporting bottom plate, an installation bottom plate is arranged at the bottom of the supporting shell, a first protective cover is arranged at the bottom of the installation bottom plate, and a video and audio collection unit is arranged at the middle of the bottom of the supporting bottom plate and extends to the inside of the first protective cover; the explosion-proof mobile audio and video recording device realizes double dynamic protection; when the first protective cover is damaged, high-pressure nitrogen gas actively offsets the impact; the second protective cover quickly moves downward to complete sealing and covering; self-cleaning and anti-secondary damage are realized; impact fragments are automatically separated from the first protective cover, so that the risk caused by retention is avoided; a pure mechanical transmission structure without motor is adopted; the device is suitable for extreme environments and has low maintenance cost; the present application fills the gap of the prior art in high dynamic explosion-proof response and function preservation, and is suitable for real-time monitoring and accident tracing in high-risk environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mobile audio and video recording, more particularly, to an explosion-proof mobile audio and video recording device. BACKGROUND

[0002] In flammable and explosive environments (such as chemical plants, mines, oil and gas exploration sites), mobile audio and video recording devices need to have high protection and real-time data acquisition capabilities. However, after the shell of the existing explosion-proof recording device is broken, the internal core components (such as the camera and microphone) are directly exposed to the dangerous environment, resulting in device failure and data loss. In addition, the existing protective cover lacks a dynamic response mechanism and cannot trigger secondary protection after the first impact.

[0003] At the same time, the existing linkage protection mechanism relies on a motor or hydraulic drive, which has a complex structure and a high failure rate. In high-temperature, high-humidity or corrosive environments, mechanical parts are prone to jamming or rusting, resulting in failure of the protection function. In addition, traditional devices require special tools for disassembly and maintenance, making it difficult to quickly repair and affecting task continuity. SUMMARY

[0004] In order to overcome the above technical problems, the present application provides an explosion-proof mobile audio and video recording device.

[0005] The present application achieves the above-mentioned purposes through the following technical solutions:

[0006] An explosion-proof mobile audio and video recording device includes a support bottom plate, a support shell is arranged at the bottom of the support bottom plate, an installation bottom plate is arranged at the bottom of the support shell, a first protective cover is arranged at the bottom of the installation bottom plate, an audio and video collection unit is arranged in the middle of the bottom of the support bottom plate and extends into the first protective cover, and high-pressure nitrogen is filled in the first protective cover.

[0007] An explosion-proof cover mechanism for protecting the audio and video collection unit is arranged in the support shell, the explosion-proof cover mechanism includes a second protective cover, a limiting transmission mechanism is arranged at the top of the installation bottom plate, and the limiting transmission mechanism is used for positioning or driving the second protective cover to displace downward to protect the audio and video collection unit.

[0008] As a further optimization scheme of the present application, the top and bottom of the support shell are tightly and sealingly connected with the support bottom plate and the installation bottom plate respectively, a central control installation column is arranged in the middle of the bottom of the support bottom plate, the bottom of the central control installation column penetrates the second protective cover, the installation bottom plate and extends into the first protective cover to arrange the audio and video collection unit, a third cavity is formed in the first protective cover, a first cavity is formed between the support shell and the second protective cover, and a second cavity is formed on the inner side of the second protective cover.

[0009] As a further optimization scheme of the present invention, the explosion-proof cover mechanism also includes a supporting top ring plate arranged at the top edge of the first protective cover, a sealing ring is arranged at the top of the supporting top ring plate near the inner side, a snap is evenly arranged on the top of the sealing ring, and a first spring is evenly arranged at the top of the supporting top ring plate near the outer side.

[0010] As a further optimization scheme of the present invention, an annular sealing groove is evenly provided on the outer side of the bottom of the mounting base plate. When the top of the supporting top ring plate is tightly fitted with the bottom of the mounting base plate, the sealing ring is embedded in the inside of the annular sealing groove. The top of the annular sealing groove is evenly provided with a card hole that is interconnected with the top of the mounting base plate. The clip passes through the card hole and is engaged with the top of the mounting base plate. The edge position of the bottom of the mounting base plate is also evenly provided with an installation cavity. The first spring is embedded in the inside of the installation cavity and is tightly connected. When the supporting top ring plate is tightly fitted with the mounting base plate, the first spring is in a compressed state.

[0011] As a further optimization scheme of the present invention, the bottom of the outer side of the second protective cover is sealed and fitted with the inner side of the mounting base, the inner side of the mounting base is evenly provided with a first limiting groove, and the outer side of the second protective cover is evenly provided with a straight line protrusion adapted to the first limiting groove, and the top width of the straight line protrusion is greater than the width of the first limiting groove.

[0012] As a further optimization scheme of the present invention, the limiting transmission mechanism also includes an arc-shaped guide groove arranged at the top of the inner side of the second protective cover, and a second spring is evenly arranged on the top of the arc-shaped guide groove, and the top of the second spring is fastened to the bottom of the supporting base plate. A second limiting groove is evenly arranged on the top of the inner side of the second protective cover, and the top of the second limiting groove passes through the top of the second protective cover. The outer side of the arc-shaped guide groove is evenly provided with a limiting protrusion adapted to the second limiting groove, and the outer side of the arc-shaped guide groove is sealed and fitted with the inner side of the second protective cover. When the second protective cover is located at the initial position at the top of the inner side of the mounting base, the limiting protrusion is located at the bottom end of the second limiting groove.

[0013] As a further optimization scheme of the present invention, sliding grooves are evenly arranged at the top of the mounting base near the inner side, and a clamping block mechanism is arranged inside the sliding groove. The clamping block mechanism includes a clamping plate, an adjustment pin, and a displacement slider. The displacement slider slides and displaces inside the sliding groove. A clamping plate is arranged on the top of the displacement slider, and an adjustment pin is arranged on the top of the clamping plate. One end of the displacement slider is provided with a third spring connected to the inner wall of the sliding groove.

[0014] As a further optimization scheme of the present invention, the bottom of the inner wall of the support shell is provided with a support ring plate which is sleeved on the outside of the second protective cover, and the two sides of the bottom of the support ring plate are rotatably connected with a support outer ring and a support inner ring respectively, and the support inner ring is close to the position of the outside of the second protective cover, and the bottom of the support outer ring and the support inner ring are jointly provided with a support bottom ring.

[0015] As a further optimization scheme of the present invention, when the second protective cover is in the initial state, the third spring has the elastic force to push the displacement slider to drive the clamping plate to clamp the outer side of the second protective cover, and the bottom of the support ring plate is respectively provided with a first rotation groove and a second rotation groove adapted to the support outer ring and the support inner ring.

[0016] As a further optimization scheme of the present invention, the outer side of the second protective cover is evenly provided with rotation guide grooves, and the rotation guide grooves include arc guide grooves and oblique guide grooves. The top of the arc guide groove passes through the top of the second protective cover, and the bottom end of the arc guide groove is connected to the top of the oblique guide groove. A number of groups of linkage pins are evenly provided on the inner side of the supporting inner ring. When the second protective cover is in the initial state, the linkage pins are located at the bottom end of the oblique guide groove. The line connecting the top and the bottom end of the oblique guide groove is an oblique line, and the angle with the longitudinal vertical line is 2°~5°.

[0017] The beneficial effects of the present invention are: the present invention realizes dual dynamic protection through high-pressure nitrogen buffering, rapid switching of double protective covers, automatic ejection of fragments and intelligent limit transmission design. When the first protective cover is damaged, the high-pressure nitrogen actively offsets the impact, and the second protective cover quickly moves down to complete the sealing coverage, self-cleaning and resistance to secondary damage. The impact fragments automatically detach with the first protective cover to avoid the risk of retention. The pure mechanical transmission structure without motor is adaptable to extreme environments and has reduced maintenance costs. This solution fills the gap in the existing technology in high-dynamic explosion-proof response and functional preservation, and is suitable for real-time monitoring and accident tracing in high-risk environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a three-dimensional structural cross-sectional view of the present invention;

[0020] Figure 3 It is a front cross-sectional view of the present invention;

[0021] Figure 4 It is a schematic diagram of a three-dimensional structure of the present invention;

[0022] Figure 5 It is an enlarged schematic diagram of the structure of the clamping block mechanism in the present invention;

[0023] Figure 6 It is an enlarged schematic diagram of the connection structure at the first protective cover in the present invention;

[0024] Figure 7 This is an enlarged cross-sectional view of the structure of the installation base plate in the present invention;

[0025] Figure 8 This is an enlarged cross-sectional view of the structure of the support bottom ring in the present invention;

[0026] Figure 9 It is an enlarged cross-sectional view of the internal connection structure of the supporting shell in the present invention;

[0027] Figure 10 yes Figure 9 A magnified schematic diagram of the structure at A;

[0028] Figure 11 It is an enlarged cross-sectional view of the internal structure of the second protective cover in the present invention;

[0029] Figure 12 It is an enlarged schematic diagram of the structure of the rotating guide groove in the present invention.

[0030] In the figure: 10, support base plate; 11, support shell; 12, mounting base plate; 13, first protective cover; 14, support ring plate; 15, support outer ring; 16, audio and video acquisition unit; 17, second protective cover; 18, central control mounting column; 19, first chamber;

[0031] 20. Second chamber; 21. Third chamber; 22. Support inner ring; 23. Annular sealing groove; 24. First spring; 25. Sealing ring; 26. Buckle; 27. Clamping block mechanism; 28. Support bottom ring; 29. ​​Linkage bayonet pin;

[0032] 30. Supporting top ring plate; 31. Slide groove; 32. First limiting groove; 33. Mounting cavity; 34. Arc guide groove; 35. Second limiting groove; 36. Second spring; 37. Limiting protrusion; 38. Rotation guide groove; 39. Linear protrusion;

[0033] 40. First rotation slot; 41. Second rotation slot; 42. Third spring; 43. Clamping hole;

[0034] 271. Clamp; 272. Adjustment pin; 273. Displacement slider;

[0035] 381. Arc guide groove; 382. Oblique guide groove. DETAILED DESCRIPTION

[0036] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples. Example 1

[0037] like Figure 1 、 Figure 2 As shown, an explosion-proof mobile audio and video recording device includes a support base plate 10, a support housing 11 is provided at the bottom of the support base plate 10, a mounting base plate 12 is provided at the bottom of the support housing 11, a first protective cover 13 is provided at the bottom of the mounting base plate 12, and an audio and video acquisition unit 16 is provided in the middle of the bottom of the support base plate 10 and extends into the interior of the first protective cover 13. The interior of the first protective cover 13 is filled with high-pressure nitrogen;

[0038] like Figures 1 to 12 As shown, the interior of the supporting shell 11 is provided with an explosion-proof cover mechanism for protecting the audio and video acquisition unit 16, the explosion-proof cover mechanism includes a second protective cover 17, and the explosion-proof cover mechanism also includes a supporting top ring plate 30 arranged at the top edge of the first protective cover 13, a sealing ring 25 is provided at the top of the supporting top ring plate 30 near the inner side, a buckle 26 is evenly provided on the top of the sealing ring 25, a first spring 24 is evenly provided at the top of the supporting top ring plate 30 near the outer side, and an annular sealing groove 23 is evenly provided on the outer side of the bottom of the mounting base 12. When the top of the support ring plate 30 is tightly fitted with the bottom of the mounting base plate 12, the sealing ring 25 is embedded in the inside of the annular sealing groove 23. The top of the annular sealing groove 23 is evenly provided with a clamping hole 43 that is interconnected with the top of the mounting base plate 12. The buckle 26 passes through the clamping hole 43 and is engaged with the top of the mounting base plate 12. The edge position of the bottom of the mounting base plate 12 is also evenly provided with a mounting cavity 33. The first spring 24 is embedded in the interior of the mounting cavity 33 and is tightly connected. When the support top ring plate 30 is tightly fitted with the mounting base plate 12, the first spring 24 is in a compressed state.

[0039] The top and bottom of the supporting shell 11 are tightly and sealedly connected to the supporting base plate 10 and the mounting base plate 12 respectively. A central control mounting column 18 is provided in the middle of the bottom of the supporting base plate 10. The bottom of the central control mounting column 18 passes through the second protective cover 17 and the mounting base plate 12 and extends to the interior of the first protective cover 13 where an audio and video acquisition unit 16 is provided. A third chamber 21 is formed inside the first protective cover 13. A first chamber 19 is formed between the supporting shell 11 and the second protective cover 17. A second chamber 20 is formed inside the second protective cover 17. The bottom of the outer side of the second protective cover 17 is sealed with the inner side of the mounting base plate 12. First limiting grooves 32 are evenly provided on the inner side of the mounting base plate 12. Straight protrusions 39 that match the first limiting grooves 32 are evenly provided on the outer side of the second protective cover 17. The top width of the straight protrusions 39 is greater than the width of the first limiting grooves 32.

[0040] A limiting transmission mechanism is provided at the top of the mounting base 12, which is used to position the second protective cover 17 or drive it to move downward to protect the audio and video acquisition unit 16. The limiting transmission mechanism also includes an arc-shaped guide groove 34 provided on the top of the inner side of the second protective cover 17. A second spring 36 is evenly provided on the top of the arc-shaped guide groove 34. The top of the second spring 36 is fastened to the bottom of the supporting base plate 10. A second limiting groove 35 is evenly provided on the top of the inner side of the second protective cover 17. The top of the second limiting groove 35 passes through the top of the second protective cover 17. A limiting protrusion 37 adapted to the second limiting groove 35 is evenly provided on the outer side of the arc-shaped guide groove 34. The outer side of the arc-shaped guide groove 34 is sealed and fitted with the inner side of the second protective cover 17. When the second protective cover 17 is located at the initial position at the top inside the mounting base 12, the limiting protrusion 37 is located at the bottom end of the second limiting groove 35.

[0041] The top of the displacement slider 273 is provided with a clamping plate 271, and the top of the clamping plate 271 is provided with an adjusting pin 272. One end of the displacement slider 273 is provided with a third spring 42 connected to the inner wall of the slide groove 31. Inside, when the second protective cover 17 is in the initial state, the third spring 42 has the elastic force to push the displacement slider 273 to drive the clamping plate 271 to clamp the outer side of the second protective cover 17. The bottom of the support ring plate 14 is respectively provided with a first rotation groove 40 and a second rotation groove 41 that are compatible with the support outer ring 15 and the support inner ring 22. The outer side of the second protective cover 17 is evenly provided with a rotation guide groove 38. The rotation guide groove 38 includes an arc guide groove 381 and an oblique guide groove 382. The top of the arc guide groove 381 passes through the top of the second protective cover 17, and the bottom end of the arc guide groove 381 is connected to the top of the oblique guide groove 382. A plurality of groups of linkage pins 29 are evenly provided on the inner side of the support inner ring 22. When the second protective cover 17 is in the initial state, the linkage pin 29 is located at the bottom end position of the oblique guide groove 382. The line between the top and bottom ends of the oblique guide groove 382 is an oblique line, and the angle with the longitudinal vertical line is 2° to 5°.

[0042] The use process of the explosion-proof mobile audio and video recording device proposed in this embodiment is as follows: when the audio and video recording device is in use, it is installed at a predetermined position by supporting the base plate 10;

[0043] At this time, the central control mounting column 18 can control the upward and downward displacement and rotation of the video and audio collection unit 16, thereby maintaining the video and audio collection unit 16 to achieve the function of 360° mobile video and audio collection. At this time, the first protective cover 13 is made of a transparent material, thereby ensuring normal video and audio collection of the video and audio collection unit 16;

[0044] During normal operation of the device, the second protective cover 17 is clamped by the clamping plate 271. High-pressure nitrogen is injected into the interior of the first protective cover 13, thereby placing the interiors of the second chamber 20 and the third chamber 21 under high pressure. The high-pressure gas exerts an upward squeezing force on the bottom of the arc-shaped guide groove 34, thereby compressing the second spring 36 and causing it to contract. At this time, the second protective cover 17 is in its initial position. The second limiting groove 35 limits the limiting protrusion 37, and the pressure of the high-pressure gas flow stabilizes the position structure of the arc-shaped guide groove 34.

[0045] When the device is subjected to a strong impact, causing the first protective cover 13 to be damaged, the impacting object may penetrate the interior of the first protective cover 13. However, at the moment the first protective cover 13 is damaged, high-pressure airflow will be ejected outward through the damaged portion of the first protective cover 13, thereby generating a reverse propulsion force on the impacting object that has penetrated the interior of the first protective cover 13, weakening or preventing the impacting object from further penetrating the interior of the first protective cover 13, thereby reducing or preventing the impact of the impacting object on the audio and video acquisition unit 16, and providing a first layer of explosion-proof function;

[0046] As the high-pressure airflow from the second chamber 20 and the third chamber 21 is ejected, the upward pushing force of the high-pressure airflow on the arc-shaped guide groove 34 no longer exists. Then, under the action of the rebound force of the second spring 36, the arc-shaped guide groove 34 is pushed downward. Through the engagement of the limiting protrusion 37 on the outer side of the arc-shaped guide groove 34 and the second limiting groove 35, the second protective cover 17 is quickly moved downward.

[0047] As the second protective cover 17 moves downward, the linear protrusion 39 slides and moves inside the first limiting groove 32, keeping the second protective cover 17 moving vertically downward. Furthermore, during the displacement of the second protective cover 17, the rotating guide groove 38 is driven to follow the downward displacement, thereby causing the linkage latch 29 to move and deflect along the oblique guide groove 382. Through the initial deflection of the linkage latch 29, the support inner ring 22 drives the support bottom ring 28 to deflect as a whole, so that the arc-shaped guide groove pushes the adjustment latch 272, releasing the squeezing effect of the clamping plate 271 on the outer side of the second protective cover 17, thereby promoting the rapid downward displacement of the second protective cover 17.

[0048] As the second protective cover 17 continues to move and the linkage latch 29 moves to the top of the oblique guide groove 382, ​​the second protective cover 17 moves down to a state where the video and audio acquisition unit 16 is enclosed therein, thereby providing secondary protection for the outside of the video and audio acquisition unit 16 through the second protective cover 17.

[0049] Furthermore, at this time, the bottom of the second protective cover 17 is in a suspended state inside the third chamber 21, and the second protective cover 17 still has the power to move downward, so that the second protective cover 17 continues to move downward, and the linkage latch 29 continues to move along the arc guide groove 381, thereby driving the support inner ring 22 to deflect rapidly. The rapid deflection of the support inner ring 22 drives the arc guide groove to quickly squeeze the adjustment latch 272 to move, thereby driving the clamping plate 271 to move rapidly, and the displacement of the clamping plate 271 pushes the buckle 26 to release the state of being engaged with the top of the mounting base 12, and then, under the action of the rebound force of the first spring 24, pushes the support top ring plate 30 to drive the first protective cover 13, the sealing ring 25, and the buckle 26 to move downward, so that the debris generated by the first protective cover 13 and the impact object that invades the interior of the first protective cover 13 move downward together with the first protective cover 13;

[0050] At the same time, when the second protective cover 17 continues to move downward, when the linkage pin 29 disengages from the top of the arc guide groove 381, the first protective cover 13 has completely disengaged from the bottom of the mounting base 12, and the second protective cover 17 continues to move downward. At this time, the straight protrusion 39 at the top of the outer side of the second protective cover 17 is blocked by the first limiting groove 32 on the inner side of the mounting base 12, thereby preventing the second protective cover 17 from continuing to descend, so that the second protective cover 17 completely wraps the audio and video acquisition unit 16, and then after the first protective cover 13 is thrown away, the second protective cover 17 forms a protective effect on the audio and video acquisition unit 16; thereby realizing the double-layer explosion-proof function and responding quickly, while ensuring the normal operation of audio and video acquisition, so that the situation at the explosion site can be recorded and disseminated in a timely manner.

[0051] The above describes the specific implementation of this embodiment, but this embodiment is not limited to the above specific implementation. The above specific implementation is merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. An explosion-proof mobile audio and video recording device, characterized in that: The device comprises a supporting base plate (10), a supporting shell (11) is provided at the bottom of the supporting base plate (10), a mounting base plate (12) is provided at the bottom of the supporting shell (11), a first protective cover (13) is provided at the bottom of the mounting base plate (12), an audio and video acquisition unit (16) is provided at the middle of the bottom of the supporting base plate (10) and extends to the interior of the first protective cover (13), and the interior of the first protective cover (13) is filled with high-pressure nitrogen; An explosion-proof cover mechanism for protecting the audio and video collection unit (16) is provided inside the supporting shell (11), the explosion-proof cover mechanism including a second protective cover (17), and a limited transmission mechanism is provided on the top of the mounting base plate (12), the limited transmission mechanism being used to position the second protective cover (17) and drive it to move downward to protect the audio and video collection unit (16); The interior of the first protective cover (13) forms a third chamber (21), and the inner side of the second protective cover (17) forms a second chamber (20); The bottom of the outer side of the second protective cover (17) is sealed and fitted with the inner side of the mounting base plate (12); the inner side of the mounting base plate (12) is evenly provided with a first limiting groove (32); the outer side of the second protective cover (17) is evenly provided with a linear protrusion (39) adapted to the first limiting groove (32); the top width of the linear protrusion (39) is greater than the width of the first limiting groove (32); The limiting transmission mechanism includes an arc-shaped guide groove (34) provided on the top of the inner side of the second protective cover (17), a second spring (36) is evenly provided on the top of the arc-shaped guide groove (34), the top of the second spring (36) is fastened to the bottom of the supporting base plate (10), a second limiting groove (35) is evenly provided on the top of the inner side of the second protective cover (17), the top of the second limiting groove (35) passes through the top of the second protective cover (17), and a limiting protrusion (37) adapted to the second limiting groove (35) is evenly provided on the outer side of the arc-shaped guide groove (34), and the outer side of the arc-shaped guide groove (34) is sealed and fitted with the inner side of the second protective cover (17); Slide grooves (31) are evenly arranged at positions near the inner side of the top of the mounting base plate (12), and a clamping block mechanism (27) is arranged inside the slide groove (31). The clamping block mechanism (27) includes a clamping plate (271), an adjustment latch (272), and a displacement slider (273). A support ring plate (14) sleeved on the outside of the second protective cover (17) is arranged at the bottom of the inner wall of the support shell (11). The two sides of the bottom of the support ring plate (14) are rotatably connected to a support outer ring (15) and a support inner ring (22), respectively. The support inner ring (22) is located near the outside of the second protective cover (17); When the second protective cover (17) is in the initial state, the third spring (42) has elastic force to push the displacement slider (273) to drive the clamping plate (271) to clamp the outer side of the second protective cover (17), and the bottom of the support ring plate (14) is respectively provided with a first rotation groove (40) and a second rotation groove (41) adapted to the support outer ring (15) and the support inner ring (22); The outer side of the second protective cover (17) is evenly provided with a rotation guide groove (38), and the rotation guide groove (38) includes an arc guide groove (381) and an oblique guide groove (382). The top end of the arc guide groove (381) passes through the top of the second protective cover (17), and the bottom end of the arc guide groove (381) is connected to the top end of the oblique guide groove (382). A plurality of groups of linkage pins (29) are evenly provided on the inner side of the support inner ring (22). When the second protective cover (17) is in the initial state, the linkage pins (29) are located at the bottom end of the oblique guide groove (382). The line connecting the top and bottom ends of the oblique guide groove (382) is an oblique line, and the angle between the line and the longitudinal vertical line is 2° to 5°. When the recording device is in normal operation, the second protective cover (17) is clamped by the clamping plate (271), and high-pressure nitrogen is injected into the interior of the first protective cover (13), thereby placing the interiors of the second chamber (20) and the third chamber (21) in a high-pressure state; At this time, the second protective cover (17) is located in the area between the top and bottom ends of the second limiting groove (35), and the second limiting groove (35) limits the limiting protrusion (37), and cooperates with the pressure of the high-pressure airflow to stabilize the position structure of the arc-shaped guide groove (34).

2. The explosion-proof mobile audio and video recording device according to claim 1, characterized in that: The top and bottom of the supporting shell (11) are respectively tightly and sealedly connected to the supporting base plate (10) and the mounting base plate (12); a central control mounting column (18) is provided in the middle of the bottom of the supporting base plate (10); the bottom of the central control mounting column (18) passes through the second protective cover (17), the mounting base plate (12) and extends to the interior of the first protective cover (13) where an audio and video acquisition unit (16) is provided; and a first chamber (19) is formed between the supporting shell (11) and the second protective cover (17).

3. The explosion-proof mobile audio and video recording device according to claim 1, characterized in that: The explosion-proof cover mechanism further comprises a supporting top ring plate (30) arranged at a top edge position of the first protective cover (13), a sealing ring (25) is arranged at a position close to the inner side of the top of the supporting top ring plate (30), a snap fastener (26) is evenly arranged at the top of the sealing ring (25), and a first spring (24) is evenly arranged at a position close to the outer side of the top of the supporting top ring plate (30).

4. The explosion-proof mobile audio and video recording device according to claim 3, characterized in that: An annular sealing groove (23) is evenly provided on the outer side of the bottom of the mounting base plate (12); when the top of the supporting top ring plate (30) is tightly fitted with the bottom of the mounting base plate (12), the sealing ring (25) is embedded in the inside of the annular sealing groove (23); the top of the annular sealing groove (23) is evenly provided with a clamping hole (43) that is interconnected with the top of the mounting base plate (12); the buckle (26) passes through the clamping hole (43) and is clamped to the top of the mounting base plate (12); an installation cavity (33) is also evenly provided at the edge position of the bottom of the mounting base plate (12); the first spring (24) is embedded in the inside of the installation cavity (33) and is tightly connected; when the supporting top ring plate (30) is tightly fitted with the mounting base plate (12), the first spring (24) is in a compressed state.

5. The explosion-proof mobile audio and video recording device according to claim 1, characterized in that: The displacement slider (273) slides and displaces inside the slide groove (31), a clamping plate (271) is provided on the top of the displacement slider (273), an adjustment latch (272) is provided on the top of the clamping plate (271), and a third spring (42) connected to the inner wall of the slide groove (31) is provided at one end of the displacement slider (273).

6. The explosion-proof mobile audio and video recording device according to claim 5, characterized in that: The bottoms of the supporting outer ring (15) and the supporting inner ring (22) are jointly provided with a supporting bottom ring (28).

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