Mining intrinsic safety type pan-tilt camera

Abstract

The invention discloses a mining intrinsic safety type pan-tilt camera, which relates to the field of biogas treatment, and comprises an explosion-proof shell, a spherical lens is arranged below the explosion-proof shell, the spherical lens is hemispherical, a camera is arranged in the spherical lens, a gear is sleeved on the outer side of the explosion-proof shell, the gear is driven by a driving mechanism mounted on the explosion-proof shell, and the driving mechanism drives the explosion-proof shell to rotate. A dust removal mechanism is arranged on the gear; in the process that the driving mechanism drives the gear to rotate, the gear drives the dust removal mechanism with the circular outer side of the spherical lens to rotate around the spherical lens, dust on the surface of the spherical lens is wiped, the dust removal mechanism is internally provided with a semicircular conveying belt capable of achieving rotary motion, and the surface of the conveying belt is provided with a cleaning part. Therefore, different cleaning parts can be rotated to the inner arc surface, making contact with the spherical lens, of the conveying belt by controlling the conveying belt to rotate, switching of the different cleaning parts is achieved, and the cleaning parts at the same position are prevented from making contact with the spherical lens for a long time.

Description

Technical Field

[0001] The invention relates to the field of mining safety monitoring, in particular to an intrinsically safe pan / tilt camera for mining. Background Art

[0002] Traditionally, mine monitoring mostly relies on fixed cameras. Since the mine environment is full of flammable and explosive gases, all electrical equipment must meet intrinsic safety requirements to prevent dangers caused by electric sparks or overheating. Therefore, the current monitoring equipment needs to be specially designed as intrinsically safe to eliminate potential safety risks. However, the camera is installed once, fixed in position, and has limited coverage, making it impossible to conduct all-round observation. When the mine layout changes or there are new monitoring needs, it is extremely inconvenient to reinstall or adjust these cameras. In addition, fixed cameras have limited ability to respond to environmental changes and are difficult to adapt to the common dust, vibration and poor lighting conditions in mines.

[0003] The patent application with publication number CN115174778B discloses an intrinsically safe visual pan-tilt, which relates to the field of pan-tilts. An intrinsically safe visual pan-tilt comprises a pan-tilt body, wherein the pan-tilt body comprises a horizontal sealed shell and a pitch sealed shell, wherein the pitch sealed shell is rotatably connected to the horizontal sealed shell; when the horizontal sealed shell rotates, the driving ring first extracts nitrogen in the pan-tilt body into the arc groove of the driving ring, and then the first arc rack engages with the second arc rack to squeeze the gas in the arc piston cylinder and blow it onto the lens for dust removal. Under the rotation of the horizontal sealed shell, the nitrogen in the arc groove will be squeezed into the radiator for cooling, thereby dissipating heat and cooling the pan-tilt body, improving the performance of the pan-tilt body, and improving the explosion-proof effect of the pan-tilt body through nitrogen. The device automatically blows dust on the surface of the lens when the horizontal sealed shell rotates for monitoring, without the need for manual automatic cleaning, which is convenient and simple.

[0004] When the camera in the above patent is facing the dusty environment in the mine, when cleaning the mirror of the camera, the nitrogen in the pan-tilt body is first extracted into the arc groove of the driving ring through the driving ring, and then the first arc rack is engaged to drive the second arc rack to squeeze the gas in the arc piston cylinder and blow it onto the lens to remove dust.

[0005] However, it is difficult to cope with the complex situations in mines with only a single camera. For example, a spherical camera can provide a 360-degree panoramic view, which is very suitable for the main shafts and intersections of large mines and other places that require all-round monitoring. However, the camera in the above patent is not a spherical camera. The mirror of the spherical camera is spherical. The dust removal method of blowing gas to the lens is difficult to take care of the entire lens, resulting in serious dust accumulation in some areas of the mirror, affecting the use of the camera. Summary of the invention

[0006] The purpose of the present invention is to provide a mining intrinsically safe pan / tilt camera to solve the problem that a single camera is difficult to cope with complex situations in mines. For example, a spherical camera can provide a 360-degree panoramic view, which is very suitable for places such as main shafts and intersections of large mines that require all-round monitoring. However, the camera in the prior art is not a spherical camera. The mirror of the spherical camera is spherical. The dust removal method of blowing gas to the lens is difficult to take into account the entire lens, resulting in serious dust accumulation in some areas of the mirror, affecting the use of the camera.

[0007] The technical solution adopted by the present invention is as follows: a mining intrinsically safe pan-tilt camera, comprising an explosion-proof shell, a spherical lens is arranged below the explosion-proof shell, the spherical lens is hemispherical, a camera is arranged inside the spherical lens, a gear is sleeved on the outer side of the explosion-proof shell, the gear is driven by a driving mechanism installed on the explosion-proof shell, and a dust removal mechanism is arranged on the gear;

[0008] The dust removal mechanism includes an arc-shaped plate, which is semicircular and arranged in parallel. The outer sides of the arc-shaped plates are connected by semicircular rings, and a semicircular cavity is formed between the arc-shaped plates and the semicircular rings. Conveying rollers are arranged at both ends of the arc-shaped plate, and a conveyor belt is arranged between the conveyor rollers. Limiting grooves corresponding to the shape of the conveyor belt are opened on the arc-shaped plate, and both sides of the conveyor belt extend into the limiting grooves. A cleaning component is arranged on the surface of the conveyor belt, and a section of the cleaning component away from the conveyor belt extends to the surface of the spherical lens. A conveying motor for driving the conveying roller to rotate is installed on the outer side of the arc-shaped plate.

[0009] Furthermore, a swing mechanism is provided between the dust removal mechanism and the gear, the swing mechanism comprises a rotating seat fixed on the gear, a rotating ear is mounted on the rotating seat, and a rotating shaft of the rotating ear is connected to the dust removal mechanism via a swing motor.

[0010] Furthermore, the cleaning component includes a brush and a scraper, the brush and the scraper are alternately arranged, and the length of the brush and the scraper is one quarter of the length of the cleaning component.

[0011] Furthermore, a cleaning brush is provided on the inner arc surface of the semicircular ring.

[0012] Furthermore, the driving mechanism includes a rotating motor and a driving gear, the driving gear is mounted on the explosion-proof housing through a rotating shaft and meshes with the gear, the rotating motor is fixed to the side of the explosion-proof housing, and the rotating motor drives the driving gear to rotate through a belt drive.

[0013] Furthermore, the limiting grooves are two semicircular grooves, both of which are concentric with the conveyor belt, and the ends of the two grooves are connected through another semicircular groove, and the other semicircular groove is concentric with the conveying roller.

[0014] Furthermore, the explosion-proof housing and the spherical lens are connected via a seal.

[0015] Furthermore, the explosion-proof housing is made of impact-resistant materials such as metal or special plastic.

[0016] Furthermore, the spherical lens is made of high-strength glass.

[0017] Furthermore, a drainage hole is provided at the bottom of the semicircular ring.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] 1. In the process of the driving mechanism of the present invention driving the gear to rotate, the gear drives the dust removal mechanism on the outer side of the spherical lens to rotate around the spherical lens to wipe the dust on the surface of the spherical lens, wherein a conveyor belt which is also semicircular and capable of rotating is arranged inside the dust removal mechanism, and a cleaning component is arranged on the surface of the conveyor belt, so that different cleaning components can be rotated to the inner arc surface where the conveyor belt contacts the spherical lens by controlling the rotation of the conveyor belt, so as to realize the switching of different cleaning components and avoid the cleaning components at the same position from contacting the spherical lens for a long time;

[0020] 2. In the present invention, after the spherical lens is cleaned, the rotating shaft of the rotating ear drives the dust removal mechanism to rotate to the outside of the gear through the swing motor, so as not to affect the field of view of the camera. When cleaning is required, the rotating ear is controlled to work, and the rotating shaft of the rotating ear drives the dust removal mechanism to rotate to the outside of the spherical lens through the swing motor, so as to drive the dust removal mechanism to complete the cleaning of the spherical lens;

[0021] 3. In the present invention, the brush and the scraper are arranged alternately, and each of the brush and the scraper occupies one quarter of the length of the cleaning component, so that it can be ensured that during the rotation of the conveyor belt, the cleaning component on the inner arc surface for cleaning the spherical lens includes half of the brush and half of the scraper. When the support frame rotates, the cleaning component on the inner arc surface of the conveyor belt is driven to reciprocate around the spherical lens. During the rotation, half of the cleaning component on the inner arc surface is the brush and the other half is the scraper. The brush removes dust and loose dirt on the surface of the spherical lens, and the scraper removes stubborn stains and streaks.

[0022] 4. After the brush and scraper in the present invention have been used for a period of time, their surfaces will be stained with some stains, which will affect the cleaning effect during subsequent use. Therefore, a cleaning brush is provided on the inner arc surface of the semicircular ring. During the rotation of the conveyor belt, the brush and scraper are driven to pass between the cleaning brushes to brush away the stains on the surfaces of the brush and scraper.

[0023] 5. In the present invention, a drainage hole is provided at the bottom of the semicircular ring, and the brush and the scraper pass between the cleaning brushes. The dirt on the surface of the brush and the scraper is brushed off and gathered at the bottom of the semicircular ring and discharged through the drainage hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a front view of the present invention;

[0026] Figure 3 is a cross-sectional view of the dust removal mechanism of the present invention;

[0027] Figure 4 is a top view of the dust removal mechanism of the present invention;

[0028] Figure 5 yes Figure 3 Cross-sectional view of CC;

[0029] Figure 6 yes Figure 1 A partial enlarged view of point A in the middle;

[0030] Figure 7 yes Figure 5 A magnified partial view of point B in the middle.

[0031] Description of reference numerals:

[0032] 1. Explosion-proof shell; 2. Gear; 3. Swing mechanism; 31. Rotating seat; 32. Swing motor; 33. Rotating ear; 4. Dust removal mechanism; 41. Support frame; 41a. Arc plate; 41b. Semicircular ring; 42. Conveyor belt; 43. Conveyor roller; 44. Brush; 45. Scraper; 46. Cleaning brush; 47. Conveyor motor; 48. Limiting groove; 5. Driving mechanism; 51. Rotating motor; 52. Driving gear; 6. Camera; 7. Spherical lens. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] Figure 1-Figure 7 As shown: a mining intrinsically safe pan / tilt camera, comprising an explosion-proof housing 1, a spherical lens 7 is arranged below the explosion-proof housing 1, the spherical lens 7 is hemispherical, and a camera 6 is arranged inside the spherical lens 7;

[0040] The explosion-proof shell 1 is made of impact-resistant materials such as metal or special plastic, and can withstand external pressure and potential impact. The explosion-proof shell 1 and the spherical lens 7 are sealed to prevent internal electrical components from contacting external flammable gases or dust. The spherical lens 7 is made of high-strength glass, which ensures its high impact resistance while ensuring good light transmittance.

[0041] A gear 2 is sleeved on the outside of the explosion-proof housing 1. The gear 2 is driven by a driving mechanism 5 installed on the explosion-proof housing 1. A dust removal mechanism 4 is provided on the gear 2.

[0042] The gear 2 is installed at the bottom of the explosion-proof shell 1. The connection between the explosion-proof shell 1 and the spherical lens 7 is cylindrical. A bearing is sleeved on the outside of the cylindrical shell, and the gear 2 is sleeved on the outside of the bearing. The dust removal mechanism 4 is semicircular, and both ends of the dust removal mechanism 4 are fixed on the lower end surface of the gear 2. The driving mechanism 5 drives the gear 2 to rotate. When the gear 2 rotates, the dust removal mechanism 4 arranged on the outside of the spherical lens 7 is driven to rotate. The dust removal mechanism 4 wipes off the dust on the surface of the spherical lens 7 during the rotation process.

[0043] The dust removal mechanism 4 includes an arc plate 41a, which is semicircular and arranged in parallel. The outer sides of the arc plate 41a are connected by a semicircular ring 41b. A semicircular cavity is formed between the arc plate 41a and the semicircular ring 41b. Conveying rollers 43 are arranged at both ends of the arc plate 41a. A conveyor belt 42 is arranged between the conveyor rollers 43. A semicircular limiting groove 48 is opened on the arc plate 41a. Both sides of the conveyor belt 42 extend into the limiting groove 48 to limit the shape of the conveyor belt 42 when it rotates. A cleaning component is arranged on the surface of the conveyor belt 42. A section of the cleaning component away from the conveyor belt 42 extends to the surface of the spherical lens 7. A conveying motor 47 for driving the conveyor roller 43 to rotate is installed on the outer side of the arc plate 41a.

[0044] In order to completely clean the hemispherical spherical lens 7, a semicircular support frame 41 is arranged on the outer side of the spherical lens 7, a semicircular cavity is formed in the support frame 41, a conveyor belt 42 is arranged in the cavity, and a cleaning component is arranged on the surface of the conveyor belt 42. The gear 2 drives the support frame 41 to rotate under the drive of the driving mechanism 5. At this time, the cleaning component on the inner arc surface of the conveyor belt 42 wipes the surface of the spherical lens 7. After being used for a period of time, the cleaning component on the inner arc surface of the conveyor belt 42 is worn. The conveying rollers 43 at both ends of the conveyor belt 42 drive the conveyor belt 42 to rotate under the drive of the conveying motor 47, so that the cleaning component on the outer arc surface of the conveyor belt 42 rotates to the inner arc surface, replacing the original cleaning component on the inner arc surface.

[0045] In order to limit the trajectory of the conveyor belt 42 during its movement, a limiting groove 48 is opened on the arc plate 41a. The limiting groove 48 is two semicircular grooves, both of which are concentric with the semicircular conveyor belt 42. The ends of the two grooves are connected by another semicircular groove, and the other semicircular groove is concentric with the conveying roller 43. Both sides of the conveyor belt 42 extend into the limiting groove 48 to ensure that it can only move along the preset shape of the limiting groove 48 during movement.

[0046] Example 2

[0047] In the first embodiment, the dust removal mechanism 4 is semicircular in shape as a whole, spanning the outside of the spherical lens 7, affecting the field of view of the camera 6. Therefore, the difference between the present embodiment and the first embodiment is that a swing mechanism 3 is provided between the dust removal mechanism 4 and the gear 2, and the swing mechanism 3 includes a rotating seat 31 fixed on the gear 2, and a rotating ear 33 is installed on the rotating seat 31, and the rotating shaft of the rotating ear 33 is connected to the dust removal mechanism 4 through a swing motor 32. After the cleaning of the spherical lens 7 is completed, the rotating shaft of the rotating ear 33 drives the dust removal mechanism 4 to rotate to the outside of the gear 2 through the swing motor 32, so as not to affect the field of view of the camera 6. When cleaning is required, the rotating ear 33 is controlled to work, and the rotating shaft of the rotating ear 33 drives the dust removal mechanism 4 to rotate to the outside of the spherical lens 7 through the swing motor 32, so as to drive the dust removal mechanism 4 to complete the cleaning of the spherical lens 7.

[0048] Example 3

[0049] The difference between this embodiment and embodiment 1 is that when the cleaning component on the inner curved surface of the conveyor belt 42 is used to wipe the surface of the spherical lens 7, it is difficult to achieve a good cleaning effect by relying on only a single cleaning component, so the cleaning component includes a brush 44 and a scraper 45, and the brush 44 and the scraper 45 are alternately arranged, and the length of the brush 44 and the scraper 45 is one quarter of the length of the cleaning component.

[0050] The brushes 44 and the scrapers 45 are arranged alternately, and the brushes 44 and the scrapers 45 each occupy a quarter of the length of the cleaning component, so that it can be ensured that during the rotation of the conveyor belt 42, the cleaning component on its inner curved surface for cleaning the spherical lens 7 includes half of the brushes 44 and half of the scrapers 45. When the support frame 41 rotates, the cleaning component on the inner curved surface of the conveyor belt 42 is driven to reciprocate around the spherical lens 7. During rotation, half of the cleaning component on the inner curved surface is the brush 44, and the other half is the scraper 45. The brush 44 removes dust and loose dirt on the surface of the spherical lens 7, and the scraper 45 removes stubborn stains and streaks.

[0051] Example 4

[0052] The difference between this embodiment and embodiment 1 is that after being used for a period of time, the surfaces of the brush 44 and the scraper 45 will be stained with some stains, which will affect the cleaning effect during subsequent use. Therefore, a cleaning brush 46 is provided on the inner arc surface of the semicircular ring 41b. During the rotation of the conveyor belt 42, the brush 44 and the scraper 45 are driven to pass between the cleaning brushes 46 to brush off the stains on the surfaces of the brush 44 and the scraper 45.

[0053] Example 5

[0054] The difference between this embodiment and embodiment 1 is that a drainage hole is opened at the bottom of the semicircular ring 41b, and the brush 44 and the scraper 45 pass between the cleaning brush 46. The stains on the surface of the brush 44 and the scraper 45 are brushed off and gathered at the bottom of the semicircular ring 41b and discharged through the drainage hole.

[0055] Example 6

[0056] The difference between this embodiment and embodiment 1 is that the driving mechanism 5 includes a rotating motor 51 and a driving gear 52, the driving gear 52 is installed on the explosion-proof housing 1 through a rotating shaft and meshes with the gear 2, the rotating motor 51 is fixed to the side of the explosion-proof housing 1, and the rotating motor 51 drives the driving gear 52 to rotate through a belt drive, thereby driving the gear 2 to rotate.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A mining intrinsically safe pan / tilt camera, comprising an explosion-proof housing (1), a spherical lens (7) is arranged below the explosion-proof housing (1), the spherical lens (7) is hemispherical, a camera (6) is arranged inside the spherical lens (7), a gear (2) is sleeved on the outer side of the explosion-proof housing (1), the gear (2) is driven by a driving mechanism (5) installed on the explosion-proof housing (1), and a dust removal mechanism (4) is arranged on the gear (2); The dust removal mechanism (4) comprises an arc plate (41a), the arc plate (41a) is semicircular, the arc plates (41a) are arranged in parallel, the outer sides of the arc plates (41a) are connected by a semicircular ring (41b), a semicircular cavity is formed between the arc plate (41a) and the semicircular ring (41b), both ends of the arc plate (41a) are provided with conveying rollers (43), a conveying belt (42) is arranged between the conveying rollers (43), the arc plate (41a) is provided with a limiting groove (48) corresponding to the shape of the conveying belt (42), both sides of the conveying belt (42) extend into the limiting groove (48), a cleaning component is arranged on the surface of the conveying belt (42), a section of the cleaning component away from the conveying belt (42) extends to the surface of the spherical lens (7), and a conveying motor (47) for driving the conveying roller (43) to rotate is installed on the outer side of the arc plate (41a).

2. The mining intrinsically safe pan / tilt camera according to claim 1, characterized in that: A swing mechanism (3) is provided between the dust removal mechanism (4) and the gear (2), the swing mechanism (3) comprising a rotating seat (31) fixed on the gear (2), a rotating ear (33) being mounted on the rotating seat (31), and a rotating shaft of the rotating ear (33) being connected to the dust removal mechanism (4) via a swing motor (32).

3. The mining intrinsically safe pan / tilt camera according to claim 1, characterized in that: The cleaning component comprises a brush (44) and a scraper (45), the brush (44) and the scraper (45) are arranged alternately, and the length of the brush (44) and the scraper (45) is one quarter of the length of the cleaning component.

4. The mining intrinsically safe pan / tilt camera according to claim 2, characterized in that: The inner arc surface of the semicircular ring (41b) is provided with a cleaning brush (46).

5. The mining intrinsically safe pan / tilt camera according to claim 1, characterized in that: The driving mechanism (5) comprises a rotating motor (51) and a driving gear (52); the driving gear (52) is mounted on the explosion-proof housing (1) via a rotating shaft and meshes with the gear (2); the rotating motor (51) is fixed to the side of the explosion-proof housing (1); and the rotating motor (51) drives the driving gear (52) to rotate via a belt transmission.

6. The mining intrinsically safe pan / tilt camera according to claim 1, characterized in that: The limiting grooves (48) are two semicircular grooves, both of which are concentric with the conveyor belt (42), and the ends of the two grooves are connected through another semicircular groove, and the other semicircular groove is concentric with the conveying roller (43).

7. The mining intrinsically safe pan / tilt camera according to claim 1, characterized in that: The explosion-proof housing (1) and the spherical lens (7) are connected via a seal.

8. The mining intrinsically safe pan / tilt camera according to claim 1, characterized in that: The explosion-proof housing (1) is made of impact-resistant materials such as metal or special plastic.

9. The mining intrinsically safe pan / tilt camera according to claim 1, characterized in that: The spherical lens (7) is made of high-strength glass.

10. The mining intrinsically safe pan / tilt camera according to claim 4, characterized in that: The bottom of the semicircular ring (41b) is provided with a drainage hole.

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