A lidar mine explosion-proof device with self-cleaning function

Abstract

The present invention provides a lidar mine explosion-proof device with a self-cleaning function, belonging to the technical field of laser explosion protection. It includes an explosion-proof cover, a connecting bracket, explosion-proof glass, an electric control box, and a self-cleaning component. A lidar mounting hole is provided on the lid of the electric control box. The connecting bracket includes a horizontal frame parallel to the lid and a vertical frame connecting the horizontal frame and the lid. An explosion-proof cover mounting hole is provided on the horizontal frame. The explosion-proof glass is an annular transparent tempered glass with a diameter gradually decreasing from top to bottom. It is arranged between the horizontal frame and the lid, with the top end located in the explosion-proof cover mounting hole and the bottom end surrounding the outside of the lidar mounting hole. The bottom end of the explosion-proof cover is fixed in the explosion-proof cover mounting hole and presses the top end of the explosion-proof glass. The self-cleaning component includes a cleaning brush and a driving mechanism. This device can enable the lidar to be safely applied in an explosive gas environment, and the self-cleaning component can clean the dust on the surface of the explosion-proof glass to ensure the effective operation of the lidar.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser explosion protection, and specifically discloses a laser radar mine explosion protection device with a self-cleaning function. Background Art

[0002] LiDAR itself has many advantages, such as extremely high range resolution and angular resolution, high speed resolution, wide speed measurement range, ability to obtain various images of targets, strong anti-interference ability, etc. This makes LiDAR have good applications in various fields. The laser scanning method is the main way to obtain three-dimensional geographical information, and the data results obtained through this way are also widely used in aspects such as resource exploration, urban planning, agricultural development, water conservancy projects, land use, environmental monitoring, transportation and communication, earthquake prevention and disaster reduction, and national key construction projects, providing extremely important original data for the national economy, social development, and scientific research, and achieving remarkable economic benefits, showing good application prospects. In addition to the above application fields, there is still more application space for LiDAR to be explored in the future. For different scenarios, the requirements for LiDAR are also different.

[0003] At present, electrical equipment such as LiDAR has been more and more widely used in explosive hazardous areas, and its safe and reliable operation has a direct and significant impact on production safety. AQ300-2007 "Safety Code for Electrical Explosion Protection in Hazardous Areas" stipulates the safety requirements and inspection procedures for the selection, installation, use, and maintenance of electrical equipment in explosive gas or combustible dust environments. The code requires that all newly built, rebuilt, and expanded production and storage devices and facilities in explosive hazardous areas must use electrical explosion protection safety facilities. For the existing technology LiDAR, it cannot be safely applied in explosive gas environments. Therefore, how to make LiDAR safely applied in explosive gas environments is one of the technical problems that need to be solved by those skilled in the art at present.

[0004] When LiDAR is used in coal mines, due to the harsh environment, dim light, and more dust in coal mines, it has a greater impact on the effective operation of LiDAR. Therefore, how to remove the dust on the surface of the explosion-proof glass to make LiDAR work more effectively is another technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a laser radar explosion-proof device for mining with self-cleaning function, which can realize the safe application of the laser radar in an explosive gas environment, and can ensure that when the explosive gas mixture entering the device is detonated by the sparks and electric arcs inside the device, the device shell will not be damaged, nor will the explosives detonate the explosive gas mixture in the surrounding environment through the connecting gaps. At the same time, the device is also equipped with a self-cleaning component, which can clean the dust on the surface of the explosion-proof glass to ensure the effective operation of the laser radar.

[0006] To achieve the above object, the present invention provides a laser radar explosion-proof device for mining with self-cleaning function, which includes an explosion-proof cover, a connecting bracket, an explosion-proof glass, an electric control box and a self-cleaning component; a lid of the electric control box is provided with a lidar mounting hole; the connecting bracket includes a horizontal frame parallel to the lid and a vertical frame connecting the horizontal frame and the lid. The horizontal frame is provided with an explosion-proof cover mounting hole. The diameter of the explosion-proof cover mounting hole is larger than the diameter of the lidar mounting hole, and the connecting line of the centers of the two is perpendicular to the lid. The area between the horizontal frame and the lid is the lidar scanning plane, and the vertical frame is located in the non-working area of the lidar scanning plane; the explosion-proof glass is an annular transparent tempered glass with a diameter gradually decreasing from top to bottom, and is arranged between the horizontal frame and the lid. The top end is located in the explosion-proof cover mounting hole, and the bottom end surrounds the outside of the lidar mounting hole; the top end of the explosion-proof cover is closed and the bottom end is open. The bottom end is fixed in the explosion-proof cover mounting hole and presses the top end of the explosion-proof glass; the self-cleaning component includes a cleaning brush attached to the outer wall of the explosion-proof glass and a driving mechanism for driving the cleaning brush to rotate along the explosion-proof glass.

[0007] Further, a first copper gasket is provided between the bottom end of the explosion-proof cover and the top end of the explosion-proof glass.

[0008] Further, an annular groove is provided on the bottom end of the explosion-proof cover from outside to inside, the first copper gasket is arranged in the annular groove, and the explosion-proof glass, the first copper gasket and the step inside the annular groove are installed in a transition fit.

[0009] Further, a second copper gasket is provided between the bottom end of the explosion-proof glass and the lid.

[0010] Further, the bottom end of the explosion-proof cover is threadedly connected to the explosion-proof cover mounting hole.

[0011] Further, an annular mounting groove is provided on the bottom surface of the horizontal frame, and the annular mounting groove is located outside the explosion-proof cover mounting hole; the driving mechanism includes a first bearing, a bushing and a driven gear arranged in the annular mounting groove, a driving gear meshing with the driven gear, a rotating shaft and a motor; the inner ring of the first bearing is fixed on the side wall of the annular mounting groove, and the outer ring is fixedly connected to the inner ring of the bushing; the outer ring of the bushing is fixedly connected to the inner ring of the driven gear; the center of the driving gear is connected to the output shaft of the motor through the rotating shaft; the cleaning brush is installed on the bushing.

[0012] Furthermore, a hinge seat is provided on the bottom surface of the ferrule, a brush arm is hinged to the hinge seat, and the cleaning brush is hinged to the brush arm.

[0013] Furthermore, a spring is provided between the hinge seat and the brush arm.

[0014] Furthermore, the cleaning brush includes a brush base and rubber brush pieces provided on the brush base.

[0015] Furthermore, the motor is fixed to the inner side of the box cover, the output shaft passes through the box cover, and the output shaft is rotatably fitted with the box cover through a second bearing; the rotating shaft passes through the driving gear, the bottom end is connected to the output shaft through a coupling, and the top end is rotatably fitted with the transverse frame through a third bearing.

[0016] The present invention has the following beneficial effects:

[0017] The above-mentioned laser radar mine explosion-proof device with self-cleaning function can realize the safe application of the laser radar in an explosive gas environment, and can ensure that when the explosive gas mixture entering the device is detonated by the sparks and electric arcs in the device, the device shell will not be damaged, nor will the explosive pass through the connection gap to detonate the explosive gas mixture in the surrounding environment. The working area of the scanning plane of the laser radar is mostly 270 degrees. The present device uses a whole piece of annular transparent tempered glass as the explosion-proof glass, and the vertical frame is arranged in the non-working area of the laser radar scanning plane, which can ensure a larger laser scanning range and effective light transmission area; the environment in coal mines is harsh and there is a lot of dust. The diameter of the explosion-proof glass in the present device gradually decreases from top to bottom, so that dust is not easily accumulated on the explosion-proof glass. Moreover, the present device is also equipped with a self-cleaning component, which can always clean the dust on the outer side of the explosion-proof glass, ensuring the transparency of the explosion-proof glass and reducing the influence of external environmental factors on the laser radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view of the laser radar mine explosion-proof device with self-cleaning function according to the present invention;

[0019] Figure 2 is Figure 1 the left view of the shown laser radar mine explosion-proof device;

[0020] Figure 3 is Figure 2 the cross-sectional view taken along the A-A direction in

[0021] Figure 4 is the schematic diagram of the self-cleaning component in the laser radar mine explosion-proof device;

[0022] Figure 5 is Figure 3 the enlarged view of part A in

[0023] Figure 6 is Figure 3 An enlarged view of part B in

[0024] Among them, the names corresponding to the reference numerals are as follows:

[0025] 1 - flameproof enclosure; 2 - connecting bracket; 3 - flameproof glass; 4.1 - box cover; 4.2 - box body; 5 - cleaning brush; 5.1 - brush base; 5.2 - rubber brush blade; 6 - first copper washer; 7 - second copper washer; 8 - first bearing; 9 - ferrule; 10 - driven gear; 11 - driving gear; 12 - rotating shaft; 13 - motor; 14 - brush arm; 15 - spring; 16 - second bearing; 17 - coupling; 18 - third bearing; 19 - lidar. Specific embodiments

[0026] Next, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] This embodiment provides a mine explosion-proof device for lidar with a self-cleaning function, including a flameproof enclosure 1, a connecting bracket 2, a flameproof glass 3, an electric control box and a self-cleaning component; a lidar mounting hole is provided on the box cover 4.1 of the electric control box; the connecting bracket 2 includes a horizontal frame parallel to the box cover 4.1 and a vertical frame connecting the horizontal frame and the box cover 4.1. A flameproof enclosure mounting hole is provided on the horizontal frame. The diameter of the flameproof enclosure mounting hole is larger than the diameter of the lidar mounting hole, and the line connecting the centers of the two is perpendicular to the box cover 4.1. The area between the horizontal frame and the box cover 4.1 is the lidar scanning plane, and the vertical frame is located in the non-working area of the lidar scanning plane; the flameproof glass 3 is an annular transparent tempered glass with a diameter gradually decreasing from top to bottom. It is arranged between the horizontal frame and the box cover 4.1, with the top end located in the flameproof enclosure mounting hole and the bottom end surrounding the outside of the lidar mounting hole; the top end of the flameproof enclosure 1 is closed and the bottom end is open. The bottom end is fixed in the flameproof enclosure mounting hole and presses the top end of the flameproof glass 3; the self-cleaning component includes a cleaning brush 5 that fits against the outer wall of the flameproof glass 3 and a driving mechanism for driving the cleaning brush 5 to rotate along the flameproof glass 3.

[0028] Furthermore, a first copper washer 6 is provided between the bottom end of the flameproof enclosure 1 and the top end of the flameproof glass 3.

[0029] Furthermore, an annular groove is provided on the bottom end of the flameproof enclosure 1 from outside to inside. The first copper washer 6 is arranged in the annular groove, and the flameproof glass 3, the first copper washer 6 and the step on the inner side of the annular groove are installed in a transitional fit. Flange holes are provided on the annular groove, and the first copper washer 6 is fixed in the annular groove by bolts.

[0030] Furthermore, a second copper washer 7 is provided between the bottom end of the explosion-proof glass 3 and the box cover 4.1. The first and second copper washers are respectively installed at the upper and lower ends of the explosion-proof glass 3, making the connection between the explosion-proof glass 3 and the connection bracket 2 and the box cover 4.1 closer. Its physical properties are resistant to high temperature and high pressure, and it can effectively prevent explosion.

[0031] Furthermore, the connection bracket 2 and the box cover 4.1 are welded together, making the explosion-proof device have a better airtight effect and playing a better role in preventing explosion.

[0032] Furthermore, the bottom end of the explosion-proof cover 1 is threadedly connected to the explosion-proof cover mounting hole, which is convenient for installation and disassembly.

[0033] Furthermore, an annular mounting groove is provided on the bottom surface of the transverse frame. The annular mounting groove is located outside the explosion-proof cover mounting hole; the driving mechanism includes a first bearing 8, a bushing 9 and a driven gear 10 arranged in the annular mounting groove, a driving gear 11 meshing with the driven gear 10, a rotating shaft 12 and a motor 13; the inner ring of the first bearing 8 is fixed to the side wall of the annular mounting groove, and the outer ring is fixedly connected to the inner ring of the bushing 9; the outer ring of the bushing 9 is fixedly connected to the inner ring of the driven gear 10; the center of the driving gear 11 is connected to the output shaft of the motor 13 through the rotating shaft 12; the cleaning brush 5 is installed on the bushing 9. The motor 13 provides power, and the driven gear 10 rotates through the meshing of the driven gear 10 and the driving gear 11. The bushing 9 fixed on the driven gear 10 drives the cleaning brush 5 to rotate along the explosion-proof glass 3.

[0034] Furthermore, a hinge seat is provided on the bottom surface of the bushing 9. A brush arm 14 is hinged to the hinge seat, and the cleaning brush 5 is hinged to the brush arm 14 so as to flexibly adjust the angle of the brush arm 14 and keep the brush arm 14 in close contact with the explosion-proof glass 3 at all times.

[0035] Furthermore, a spring 15 is provided between the hinge seat and the brush arm 14, and the spring force of the spring 15 further ensures that the brush arm 14 is in close contact with the explosion-proof glass 3 at all times.

[0036] Furthermore, the cleaning brush 5 includes a brush seat 5.1 and rubber brush pieces 5.2 arranged on the brush seat 5.1. The rubber brush pieces 5.2 are used to remove impurities on the surface of the explosion-proof glass 3, and the total length is equal to the inclined surface length of the explosion-proof glass 3.

[0037] Furthermore, the motor 13 is fixed to the inner side of the box cover 4.1 by threaded fit. The output shaft passes through the box cover 4.1, and the output shaft and the box cover 4.1 are rotationally matched through a second bearing 16; the rotating shaft 12 passes through the driving gear 11 and is connected to the driving gear 11 through a spline. The bottom end is connected to the output shaft through a coupling 17, and the top end is rotationally matched with the transverse frame through a third bearing 18.

[0038] Further, the motor 13 is a DC motor, and the driving gear 11, the rotating shaft 12, and the motor 13 are all installed between the explosion-proof glass 3 and the vertical frame.

[0039] Further, the box cover 4.1 and the box body 4.2 are connected by bolts.

[0040] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser radar mine explosion-proof device with a self-cleaning function, characterized in that, It includes an explosion-proof cover, a connecting bracket, explosion-proof glass, an electric control box and a self-cleaning component; A lidar mounting hole is provided on the lid of the electric control box; The connecting bracket includes a transverse frame parallel to the lid and a vertical frame connecting the transverse frame and the lid. An explosion-proof cover mounting hole is provided on the transverse frame. The diameter of the explosion-proof cover mounting hole is larger than the diameter of the lidar mounting hole, and the connecting line of the centers of the two is perpendicular to the lid. The area between the transverse frame and the lid is the lidar scanning plane, and the vertical frame is located in the non-working area of the lidar scanning plane; The explosion-proof glass is an annular transparent tempered glass with a diameter gradually decreasing from top to bottom. It is arranged between the transverse frame and the lid, with the top end located in the explosion-proof cover mounting hole and the bottom end surrounding the outside of the lidar mounting hole; The top end of the explosion-proof cover is closed and the bottom end is open. The bottom end is fixed in the explosion-proof cover mounting hole and presses the top end of the explosion-proof glass; The self-cleaning component includes a cleaning brush that fits against the outer wall of the explosion-proof glass and a driving mechanism for driving the cleaning brush to rotate along the explosion-proof glass; An annular mounting groove is provided on the bottom surface of the transverse frame, and the annular mounting groove is located outside the explosion-proof cover mounting hole; The driving mechanism includes a first bearing, a bushing and a driven gear arranged in the annular mounting groove, a driving gear meshing with the driven gear, a rotating shaft and a motor; The inner ring of the first bearing is fixed to the side wall of the annular mounting groove, and the outer ring is fixedly connected to the inner ring of the bushing; The outer ring of the bushing is fixedly connected to the inner ring of the driven gear; The center of the driving gear is connected to the output shaft of the motor through a rotating shaft; The cleaning brush is mounted on the bushing.

2. The explosion-proof device for lidar used in mines with self-cleaning function according to claim 1, wherein, A first copper gasket is provided between the bottom end of the explosion-proof cover and the top end of the explosion-proof glass.

3. The lidar mine explosion-proof device with self-cleaning function according to claim 2, wherein, An annular groove is provided on the bottom end of the explosion-proof cover from outside to inside. The first copper gasket is arranged in the annular groove, and the explosion-proof glass, the first copper gasket and the step on the inner side of the annular groove are installed in a transition fit.

4. The explosion-proof device for lidar used in mines with self-cleaning function according to claim 3, characterized in that, A second copper gasket is provided between the bottom end of the explosion-proof glass and the lid.

5. The lidar mine explosion-proof device with self-cleaning function according to claim 4, characterized in that, The bottom end of the explosion-proof cover is threadedly connected to the explosion-proof cover mounting hole.

6. The explosion-proof device for lidar used in mines with self-cleaning function according to claim 1, characterized in that, A hinge seat is provided on the bottom surface of the bushing. A brush arm is hinged to the hinge seat, and the cleaning brush is hinged to the brush arm.

7. The explosion-proof device for lidar used in mines with self-cleaning function according to claim 6, characterized in that, A spring is provided between the hinge seat and the brush arm.

8. The lidar mine explosion-proof device with self-cleaning function according to claim 7, characterized in that, The cleaning brush includes a brush seat and rubber brush pieces arranged on the brush seat.

9. The explosion-proof device for lidar used in mines with self-cleaning function according to claim 8, wherein, The motor is fixed inside the lid, and the output shaft passes through the lid. The output shaft is rotatably matched with the lid through a second bearing; The rotating shaft passes through the driving gear, and the bottom end is connected to the output shaft through a coupling, and the top end is rotatably matched with the transverse frame through a third bearing.

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