Explosion-proof multi-line laser radar

Abstract

The utility model discloses a kind of anti-explosion multi-line system laser radars, belong to laser radar technical field.This kind of anti-explosion multi-line system laser radar, including explosion-proof shell, the top of explosion-proof shell is equipped with glass window cover, the top of glass window cover is equipped with protective cover, the inside of explosion-proof shell is equipped with sealed chamber, the top of explosion-proof shell is equipped with opening, the inside of opening is equipped with carousel, the top of carousel is equipped with multi-line laser transmitter and laser receiver, the bottom of carousel middle part is equipped with rotating shaft, the bottom of rotating shaft and the inside bottom of sealed chamber are rotatably connected, the outside of explosion-proof shell is equipped with several radiating fins, the bottom of carousel is equipped with heat-conducting sheet, one end of heat-conducting sheet and the inner wall of sealed chamber contact, the utility model can effectively form explosion protection, prevent internal element spark to cause external dangerous environment explosion, with higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of lidar technology, specifically to an explosion-proof multi-line lidar. Background Technology

[0002] LiDAR, as an important environmental sensing device, is widely used in fields such as autonomous driving, industrial inspection, and intelligent security. In some special environments, such as petrochemical plants and underground coal mines where flammable and explosive gases or dust are present, extremely high requirements are placed on the explosion-proof performance of lidar.

[0003] Based on the above, the inventors have discovered the following problem: Current lidar can work normally in ordinary environments, but in explosion-proof environments, the electrical sparks or high temperatures generated by its electrical components may cause an explosion, posing a great safety hazard.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an explosion-proof multi-line lidar in order to achieve a more practical value. Utility Model Content

[0005] The purpose of this invention is to provide an explosion-proof multi-line lidar to solve the problem mentioned in the background art that current lidars can work normally in ordinary environments, but in explosion-proof environments, the electrical sparks or high temperatures generated by their electrical components may cause an explosion, posing a great safety hazard.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] An explosion-proof multi-line lidar includes an explosion-proof housing, a glass window cover mounted on the top of the housing, a protective cover mounted on the top of the glass window cover, a sealed chamber inside the housing, an opening at the top of the housing, a turntable inside the opening, a multi-line laser emitter and a laser receiver mounted on the top of the turntable, a rotating shaft mounted at the center of the bottom of the turntable, the bottom of the rotating shaft being rotatably connected to the bottom of the sealed chamber, several heat dissipation fins mounted on the outer side of the housing, a heat-conducting plate mounted on the bottom of the turntable, one end of the heat-conducting plate contacting the inner wall of the sealed chamber, a gland terminal block mounted on one side of the housing, and a drive mechanism for rotating the rotating shaft mounted at the bottom of the sealed chamber.

[0008] Furthermore, the drive mechanism includes a cage, the bottom end of which is fixedly connected to the bottom end of the sealed chamber. A motor is mounted on one side of the cage, and bevel gears are fitted onto the output end of the motor and the outer bottom end of the rotating shaft. The motor and the rotating shaft are connected by bevel gear transmission.

[0009] The beneficial effect of adopting the above-mentioned further solution is that the motor is fixed by the cage in the drive mechanism, and the motor drives the rotating shaft to rotate through the bevel gear transmission, which provides stable power for the turntable and laser components, realizes the rotational scanning of multi-line laser, and ensures the comprehensiveness of the detection range.

[0010] Furthermore, a conductive slip ring is fitted on the outer side of the rotating shaft, and a fixing rod is installed on both sides of the fixed end of the conductive slip ring. One end of the fixing rod is fixedly connected to the inner side of the sealed chamber, and the rotating end of the conductive slip ring is fixedly connected to the outer side of the rotating shaft.

[0011] The beneficial effect of adopting the above-mentioned further solution is that, through the conductive slip ring on the outside of the rotating shaft, the circuit between the fixed end and the rotating end is connected when the shaft rotates. The fixed rod fixes the conductive slip ring, ensuring that the multi-line laser transmitter and laser receiver are continuously powered and transmit signals during rotation, thus ensuring the normal operation of the radar.

[0012] Furthermore, the fixed end of the conductive slip ring is electrically connected to the gland terminal block via a wire, and the rotating end of the conductive slip ring is electrically connected to the multi-line laser emitter and the laser receiver via wires respectively.

[0013] The beneficial effect of adopting the above-mentioned further solution is that by electrically connecting the fixed end of the conductive slip ring with the terminal block of the gland and the rotating end with the laser component, a complete circuit path is formed, realizing a stable connection between the external power supply and signal and the rotating component, and ensuring real-time transmission of detection data.

[0014] Furthermore, both sides of the explosion-proof housing are equipped with mounting bases, and the top of each mounting base has a mounting hole.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the fixing seats and fixing holes on both sides of the explosion-proof shell make it easy to firmly install the radar in the designated position, prevent it from loosening during operation, and ensure detection accuracy and equipment safety.

[0016] Furthermore, a groove is provided on the outer side of the turntable, and a limit ring is slidably connected to the inner side of the groove. The outer side of the limit ring and the inner side of the opening are fixedly connected.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the sliding connection between the outer groove of the turntable and the limiting ring guides and limits the rotation of the turntable, prevents the turntable from deviating, and ensures the accuracy of the detection angle of the multi-line laser emitter and laser receiver.

[0018] Furthermore, the glass window cover is made of explosion-proof glass.

[0019] The beneficial effect of adopting the above-mentioned further solution is that, by using a glass window cover made of explosion-proof glass material, laser signals can be successfully transmitted, while also having explosion-proof performance to prevent glass breakage and potential danger, thus meeting the needs of use in flammable and explosive environments.

[0020] Compared with existing technologies, the beneficial effects of this utility model are as follows: This explosion-proof multi-line laser radar forms an explosion-proof protection through an explosion-proof shell, preventing internal component sparks from causing an explosion in a hazardous external environment. A glass window ensures laser signal penetration, and a protective cover protects the glass window from damage. An internal seal is achieved through a sealed chamber. The turntable drives the multi-line laser transmitter and receiver to rotate, enabling multi-angle detection. Heat is dissipated through heat sinks and heat-conducting plates to prevent internal overheating. Safe wiring is achieved through gland terminals. The drive mechanism drives the rotating shaft to rotate, ensuring normal operation of the radar. A retainer in the drive mechanism fixes the motor, which drives the rotating shaft through bevel gear transmission, providing stable power to the turntable and laser components, achieving multi-line laser rotation scanning, and ensuring comprehensive detection range. A conductive slip ring on the outside of the rotating shaft ensures circuit connection between the fixed end and the rotating end during shaft rotation. A fixing rod fixes the conductive slip ring, ensuring the multi-line laser transmitter and receiver... Continuous power supply and signal transmission during rotation ensure normal radar operation. A complete circuit path is formed through the electrical connection between the conductive slip ring fixed end and the gland terminal, and between the rotating end and the laser component, achieving a stable connection between the external power supply and signal and the rotating component, ensuring real-time transmission of detection data. The fixing seats and holes on both sides of the explosion-proof housing facilitate secure installation of the radar in designated positions, preventing loosening during operation and ensuring detection accuracy and equipment safety. The sliding connection between the outer groove of the turntable and the limiting ring guides and limits the turntable's rotation, preventing offset and ensuring accurate detection angles for the multi-line laser emitter and receiver. The explosion-proof glass window cover ensures smooth laser signal penetration while providing explosion protection, preventing glass breakage and potential hazards. Adapting to flammable and explosive environments, this invention effectively provides explosion protection, preventing internal component sparks from igniting external hazardous environments, and possesses high practical value. Attached Figure Description

[0021] Figure 1 This is one of the three-dimensional structural schematic diagrams disclosed in the embodiments of this utility model;

[0022] Figure 2 This is the second three-dimensional structural schematic diagram disclosed in the embodiment of this utility model;

[0023] Figure 3 This is the third perspective structural diagram of the present utility model embodiment;

[0024] Figure 4 This is a cross-sectional view of the explosion-proof enclosure disclosed in an embodiment of this utility model;

[0025] Figure 5 The embodiments disclosed herein Figure 4 A magnified schematic diagram of structure A in the middle.

[0026] In the diagram: 1. Explosion-proof housing; 101. Sealed chamber; 102. Opening; 103. Limiting ring; 2. Glass window cover; 3. Protective cover; 4. Heat dissipation fins; 5. Fixing base; 501. Fixing hole; 6. Gland connector terminal block; 7. Turntable; 8. Multi-line laser emitter; 9. Laser receiver; 10. Heat-conducting plate; 11. Rotating shaft; 12. Conductive slip ring; 13. Fixing rod; 14. Drive mechanism; 1401. Cage; 1402. Motor; 1403. Bevel gear. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 This utility model provides a technical solution: an explosion-proof multi-line laser radar, including an explosion-proof housing 1, a glass window cover 2 installed at the top of the explosion-proof housing 1, a protective cover 3 installed at the top of the glass window cover 2, a sealed chamber 101 inside the explosion-proof housing 1, an opening 102 at the top of the explosion-proof housing 1, a turntable 7 inside the opening 102, a multi-line laser emitter 8 and a laser receiver 9 installed at the top of the turntable 7, a rotating shaft 11 installed at the middle of the bottom of the turntable 7, the bottom of the rotating shaft 11 being rotatably connected to the bottom of the sealed chamber 101, a plurality of heat dissipation fins 4 installed on the outside of the explosion-proof housing 1, a heat-conducting plate 10 installed at the bottom of the turntable 7, one end of the heat-conducting plate 10 being connected to the sealed chamber 101. The inner walls are in contact. A gland terminal 6 is installed on one side of the explosion-proof housing 1. A drive mechanism 14 for rotating the shaft 11 is installed at the bottom of the sealed chamber 101. The explosion-proof housing 1 forms an explosion-proof protection to prevent sparks from internal components from causing an explosion in the external hazardous environment. The glass window cover 2 ensures the penetration of the laser signal. The protective cover 3 protects the glass window cover 2 from damage. The sealed chamber 101 achieves internal sealing. The turntable 7 drives the multi-line laser emitter 8 and laser receiver 9 to rotate, realizing multi-angle detection. Heat is dissipated through the heat sink fins 4 and heat conduction plates 10 to avoid internal overheating. The gland terminal 6 enables safe wiring. The drive mechanism 14 drives the shaft 11 to rotate, ensuring the normal operation of the radar.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-5 The drive mechanism 14 includes a retainer 1401, the bottom end of which is fixedly connected to the bottom end of the sealed chamber 101. A motor 1402 is mounted on one side of the retainer 1401. A bevel gear 1403 is fitted onto both the output end of the motor 1402 and the bottom outer side of the rotating shaft 11. The motor 1402 and the rotating shaft 11 are connected by transmission through the bevel gear 1403. A conductive slip ring 12 is fitted onto the outer side of the rotating shaft 11. Fixing rods 13 are mounted on both sides of the fixed end of the conductive slip ring 12. One end of the fixing rod 13 is fixedly connected to the inner side of the sealed chamber 101. The rotating end of the conductive slip ring 12 is fixedly connected to the outer side of the rotating shaft 11. The fixed end of the conductive slip ring 12 is electrically connected to the gland terminal 6 via a wire. The rotating end of the conductive slip ring 12 is connected to the multi-line laser emitter 8 and the laser receiver via wires. The device 9 is electrically connected, and the motor 1402 is fixed by the retainer 1401 in the drive mechanism 14. The motor 1402 drives the rotating shaft 11 to rotate through the bevel gear 1403, providing stable power to the turntable 7 and the laser component, realizing the rotational scanning of multi-line laser and ensuring the comprehensiveness of the detection range. The conductive slip ring 12 on the outside of the rotating shaft 11 realizes the circuit connection between the fixed end and the rotating end when the rotating shaft 11 rotates. The fixing rod 13 fixes the conductive slip ring 12 to ensure that the multi-line laser transmitter 8 and the laser receiver 9 are continuously powered and transmit signals during the rotation, ensuring the normal operation of the radar. The fixed end of the conductive slip ring 12 is electrically connected to the gland terminal 6, and the rotating end is connected to the laser component to form a complete circuit path, realizing the stable connection between the external power supply and signal and the rotating component, and ensuring the real-time transmission of detection data.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5The explosion-proof housing 1 has mounting bases 5 on both sides, with mounting holes 501 at the top of the mounting bases 5. The outer side of the turntable 7 has a groove, and a limit ring 103 is slidably connected to the inner side of the groove. The outer side of the limit ring 103 is fixedly connected to the inner side of the opening 102. The glass cover 2 is made of explosion-proof glass. The mounting bases 5 and mounting holes 501 on both sides of the explosion-proof housing 1 facilitate the secure installation of the radar in the designated position, preventing loosening during operation and ensuring detection accuracy and equipment safety. The sliding connection between the outer groove of the turntable 7 and the limit ring 103 guides and limits the rotation of the turntable 7, preventing the turntable 7 from shifting and ensuring the accurate detection angle of the multi-line laser transmitter 8 and the laser receiver 9. The glass cover 2 made of explosion-proof glass ensures that the laser signal can penetrate smoothly and has explosion-proof performance, preventing the glass from breaking and causing danger, and meeting the needs of use in flammable and explosive environments.

[0033] Specifically, the working principle of this explosion-proof multi-line lidar is as follows: During use, the explosion-proof housing 1 provides explosion protection, preventing internal sparks from causing an explosion in the external hazardous environment. The glass window 2 ensures laser signal penetration, and the protective cover 3 protects the glass window 2 from damage. The sealed chamber 101 achieves internal sealing. The turntable 7 drives the multi-line laser emitter 8 and laser receiver 9 to rotate, enabling multi-angle detection. Heat is dissipated through the heat sink fins 4 and heat-conducting plates 10 to prevent internal overheating. Safe wiring is achieved through the gland terminal block 6. The drive mechanism 14 drives the rotating shaft 11 to rotate, ensuring normal operation of the lidar. The retainer 1401 in the drive mechanism 14 fixes the motor 1402, which drives the rotating shaft 11 to rotate via a bevel gear 1403, providing stable power to the turntable 7 and laser components, achieving multi-line laser rotation scanning and ensuring comprehensive detection range. The conductive slip ring 12 on the outside of the rotating shaft 11 connects the fixed end and the rotating end during rotation. The fixing rod 13 fixes the conductive slip ring 12, ensuring multi-line laser rotation. The line laser emitter 8 and laser receiver 9 continuously supply power and transmit signals during rotation, ensuring the normal operation of the radar. A complete circuit path is formed through the electrical connection between the fixed end of the conductive slip ring 12 and the gland terminal 6, and between the rotating end and the laser component, achieving a stable connection between the external power supply and signal and the rotating component, ensuring real-time transmission of detection data. The fixing seats 5 and fixing holes 501 on both sides of the explosion-proof housing 1 facilitate the secure installation of the radar in the designated position, preventing loosening during operation and ensuring detection accuracy and equipment safety. The sliding connection between the outer groove of the turntable 7 and the limiting ring 103 guides and limits the rotation of the turntable 7, preventing it from shifting and ensuring accurate detection angles for the multi-line laser emitter 8 and laser receiver 9. The explosion-proof glass window cover 2 ensures smooth laser signal penetration while providing explosion-proof performance, preventing glass breakage and potential hazards. It meets the requirements for use in flammable and explosive environments. This invention effectively provides explosion-proof protection, preventing internal component sparks from causing explosions in external hazardous environments, and has high practical value.

Claims

1. An explosion-proof multi-line lidar, characterized in that, The device includes an explosion-proof housing (1), a glass window cover (2) installed at the top of the explosion-proof housing (1), a protective cover (3) installed at the top of the glass window cover (2), a sealed chamber (101) inside the explosion-proof housing (1), an opening (102) at the top of the explosion-proof housing (1), a turntable (7) inside the opening (102), a multi-line laser emitter (8) and a laser receiver (9) installed at the top of the turntable (7), and a rotating shaft installed at the bottom center of the turntable (7). 11), the bottom end of the rotating shaft (11) is rotatably connected to the bottom end of the sealed chamber (101), a number of heat dissipation fins (4) are installed on the outside of the explosion-proof shell (1), a heat-conducting plate (10) is installed on the bottom end of the turntable (7), one end of the heat-conducting plate (10) is in contact with the inner wall of the sealed chamber (101), a gland terminal (6) is installed on one side of the explosion-proof shell (1), and a drive mechanism (14) for rotating the rotating shaft (11) is installed on the bottom end of the sealed chamber (101).

2. The explosion-proof multi-line lidar according to claim 1, characterized in that, The drive mechanism (14) includes a retainer (1401), the bottom end of which is fixedly connected to the bottom end of the sealed chamber (101). A motor (1402) is installed on one side of the retainer (1401). A bevel gear (1403) is fitted on the output end of the motor (1402) and the bottom end of the outer side of the shaft (11). The motor (1402) and the shaft (11) are connected by the bevel gear (1403).

3. The explosion-proof multi-line lidar according to claim 1, characterized in that, A conductive slip ring (12) is sleeved on the outer side of the rotating shaft (11). A fixing rod (13) is installed on both sides of the fixed end of the conductive slip ring (12). One end of the fixing rod (13) is fixedly connected to the inner side of the sealed chamber (101). The rotating end of the conductive slip ring (12) is fixedly connected to the outer side of the rotating shaft (11).

4. The explosion-proof multi-line lidar according to claim 3, characterized in that, The fixed end of the conductive slip ring (12) is electrically connected to the gland terminal (6) via a wire, and the rotating end of the conductive slip ring (12) is electrically connected to the multi-line laser emitter (8) and the laser receiver (9) via wires respectively.

5. The explosion-proof multi-line lidar according to claim 1, characterized in that, The explosion-proof housing (1) is equipped with a fixing seat (5) on both sides, and a fixing hole (501) is provided at the top of the fixing seat (5).

6. The explosion-proof multi-line lidar according to claim 1, characterized in that, The turntable (7) has a groove on its outer side, and a limiting ring (103) is slidably connected to the inner side of the groove. The outer side of the limiting ring (103) is fixedly connected to the inner side of the opening (102).

7. The explosion-proof multi-line lidar according to claim 1, characterized in that, The glass window cover (2) is made of explosion-proof glass.

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