Servo turntable for video monitoring station

Abstract

The invention relates to a servo rotary table for a video monitoring station, and relates to the field of cameras, the servo rotary table comprises a pitching bag, an orientation seat, a sealing ring and a graphite ring, the orientation seat is rotatably connected with a U-shaped frame, the pitching bag is rotatably connected with the U-shaped frame, and the rotation axis of the pitching bag is perpendicular to the rotation axis of the U-shaped frame; a stepped labyrinth groove is formed in the end, connected with the pitching bag, of the U-shaped frame, and the sealing ring is embedded into the labyrinth groove and is subjected to oil sealing; a special-shaped groove is formed in the connecting position of the azimuth base and the U-shaped frame, a spring is embedded in the special-shaped groove, and a graphite ring is embedded in the special-shaped groove and abuts against the spring so that the interior of the azimuth base can be sealed.

Description

Technical Field

[0001] The present invention relates to the technical field of cameras, and in particular to a servo turntable for a video monitoring station. Background Art

[0002] Video surveillance stations are often installed in unmanned areas along the border or coast, and are generally equipped with radar systems and servo turntable systems. The servo turntable is a fixed installation, usually a two-dimensional turntable with an azimuth-pitch type. The servo turntable generally needs to be installed with optical detectors such as infrared thermal imagers and visible light cameras to observe the target. Usually, the working mode of the monitoring station is that the radar performs a scanning search and sends the searched target coordinate information to the servo turntable. After receiving the coordinate information, the servo turntable automatically moves to the target position and tracks the target with an infrared thermal imager or a visible light camera.

[0003] Due to the special use of the servo turntable, the transmission methods in the two dimensions of azimuth and pitch need to be designed differently. In addition, the servo turntable works in harsh outdoor environments for a long time, such as high temperature, high humidity, high salt fog or low temperature, severe cold, rain, snow, dust and long-term unattended operation. If the sealing is poor, the service life of the servo turntable will be greatly affected.

[0004] Therefore, in view of the above shortcomings, it is necessary to provide a servo turntable for a video monitoring station. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The technical problem to be solved by the present invention is to solve the problem that the sealing performance of the current servo turntable is not suitable for harsh environments.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a servo turntable for a video monitoring station, comprising a pitch package, an azimuth seat, a sealing ring and a graphite ring, the azimuth seat is rotatably connected to a U-shaped frame, the pitch package is rotatably connected to the U-shaped frame, and the rotation axis of the pitch package and the rotation axis of the U-shaped frame are perpendicular to each other; a stepped labyrinth groove is provided at the connecting end of the U-shaped frame and the pitch package, the sealing ring is embedded in the labyrinth groove and oil-sealed; a special-shaped groove is provided at the connecting end of the azimuth seat and the U-shaped frame, a spring is embedded in the special-shaped groove, the graphite ring is embedded in the special-shaped groove and abuts against the spring to seal the azimuth seat.

[0009] As a further illustration of the present invention, preferably, a turntable is rotatably connected to the top of the orientation seat, the bottom of the turntable abuts against the graphite ring, and the top surface of the turntable is fixedly connected to the U-shaped frame.

[0010] As a further illustration of the present invention, preferably, a pitch motor is fixedly connected to one side of the top of the U-shaped frame, and rotating shafts are fixedly connected to both sides of the pitch package. The rotating shafts extend into the U-shaped frame and are connected to the pitch motor to drive the pitch package to rotate.

[0011] As a further illustration of the present invention, preferably, the output end of the pitch motor is connected to a reducer, the output end of the reducer is rotatably connected to a small gear, a large gear is fixedly connected to the outside of one end of the rotating shaft close to the small gear, and the small gear is meshed with the large gear.

[0012] As a further illustration of the present invention, preferably, an electromagnet is installed at one end of the rotating shaft away from the large gear.

[0013] As a further illustration of the present invention, preferably, a Hall switch is installed at one end of the rotating shaft away from the large gear.

[0014] As a further illustration of the present invention, preferably, a pitch code disc is installed on the side of the U-shaped frame close to the electromagnet, and the pitch code disc is connected to the rotating shaft.

[0015] As a further illustration of the present invention, preferably, a seat cover is fixedly connected in the azimuth seat, an azimuth motor is fixedly connected in the azimuth seat below the seat cover, an azimuth shaft is rotatably connected in the seat cover, and the azimuth shaft is rotatably connected to the azimuth motor and fixedly connected to the turntable.

[0016] As a further illustration of the present invention, preferably, a slip ring is fixedly connected inside the azimuth shaft.

[0017] As a further illustration of the present invention, preferably, the bottom of the azimuth shaft extends out of the azimuth motor and is connected to an azimuth code disk.

[0018] (III) Beneficial effects

[0019] The above technical solution of the present invention has the following advantages:

[0020] According to the working environment of the turntable, the present invention designs a new transmission structure with different azimuth and pitch of the turntable, and improves the sealing structure at the same time, so as to effectively prolong the service life of the servo turntable in harsh environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a cross-sectional view of the pitch bag installation structure of the present invention;

[0022] Figure 2 yes Figure 1 A magnified view of middle;

[0023] Figure 3 It is a cross-sectional view of the azimuth seat installation structure of the present invention;

[0024] Figure 4 It is a cross-sectional view of the final assembly effect;

[0025] Figure 5 yes Figure 4 Enlarged view of B.

[0026] In the figure: 1. Pitch package; 10. U-shaped frame; 11. Pitch motor; 12. Reducer; 13. Pinion; 14. Gear; 15. Rotating shaft; 16. Pitch bearing; 17. Electromagnet; 18. Pitch encoder; 19. Hall switch; 2. Azimuth seat; 21. Azimuth motor; 22. Azimuth shaft; 23. Azimuth encoder; 24. Fork bracket; 25. Seat cover; 26. Azimuth bearing; 27. Sink ring; 28. Turntable; 29. ​​Encoder bracket; 3. Sealing ring; 31. Labyrinth groove; 4. Graphite ring; 41. Spring; 42. Special-shaped groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not 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.

[0028] A servo turntable for a video surveillance station, combined with Figure 2 , Figure 5 , including a pitch package 1, an azimuth seat 2, a sealing ring 3 and a graphite ring 4. The azimuth seat 2 is rotatably connected to a U-shaped frame 10, and the pitch package 1 is rotatably connected to the U-shaped frame 10. The rotation axis of the pitch package 1 and the rotation axis of the U-shaped frame 10 are perpendicular to each other. The sealing ring 3 is installed at the connection between the pitch package 1 and the U-shaped frame 10, and the graphite ring 4 is installed at the connection between the U-shaped frame 10 and the azimuth seat 2.

[0029] Combination Figure 1 , Figure 2 A pitch motor 11 is fixedly connected to one side of the top of the U-shaped frame 10, and a reducer 12 is connected to the output end of the pitch motor 11, and a pinion 13 is rotatably connected to the output end of the reducer 12. A rotating shaft 15 is fixedly connected to both sides of the pitch package 1, and the rotating shaft 15 extends into the U-shaped frame 10 and is connected to the pitch motor 11 to drive the pitch package 1 to rotate. A large gear 14 is fixedly connected to the outside of the rotating shaft 15 near the small gear 13, and the small gear 13 meshes with the large gear 14 so that the pitch motor 11 can drive the pitch package 1 to perform a pitch action. An electromagnet 17 is installed at the end of the rotating shaft 15 away from the large gear 14. A pitch encoder 18 is installed on the side of the U-shaped frame 10 near the electromagnet 17, and the pitch encoder 18 is connected to the rotating shaft 15. A Hall switch 19 is installed at the end of the rotating shaft 15 away from the large gear 14.

[0030] Combination Figure 3 , Figure 4A seat sleeve 25 is installed in the azimuth seat 2, an azimuth bearing 26 is installed on the seat sleeve 25, an azimuth shaft 22 is installed on the azimuth bearing 26, and a confluence ring 27 is installed in the middle of the azimuth shaft 22. An azimuth motor 21 is provided at the bottom of the azimuth seat 2, and the bottom of the azimuth shaft 22 is rotatably connected to the azimuth motor 21. A code disk bracket 29 is installed inside the azimuth seat 2, and an azimuth code disk 23 is fixed on the code disk bracket 29. The azimuth shaft 22 is rotatably connected to the azimuth code disk 23. A fork bracket 21 is connected to the azimuth seat 2 to limit the position with the fork at the tail of the confluence ring 27. An azimuth turntable 28 is fixed to the top of the azimuth shaft 22, and it can be connected to the pitch U-shaped frame 10 as a whole through the azimuth turntable 28.

[0031] Combination Figure 2 , Figure 5 The U-shaped frame 10 and the pitch bag 1 are connected with a stepped labyrinth groove 31, and the sealing ring 3 is embedded in the labyrinth groove 31 and oil-sealed. The azimuth seat 2 and the U-shaped frame 10 are connected with a stepped special-shaped groove 42, and the special-shaped groove 42 is embedded with a spring 41. The graphite ring 4 is embedded in the special-shaped groove 42 and abuts against the spring 41 to push the graphite ring 4 to the turntable 28, so that the upper surface of the graphite ring 4 can always keep a close fit with the azimuth turntable 28, ensuring that the friction is small and the sealing is good when the azimuth axis system rotates. The above-mentioned transmission system and sealing system can not only prevent rainwater and dust from entering, but also prevent salt spray from entering the shaft system to corrode important components such as parts, circuit boards, and connectors.

[0032] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A servo turntable for a video monitoring station, characterized in that: The invention comprises a pitch bag (1), an azimuth seat (2), a sealing ring (3) and a graphite ring (4); the azimuth seat (2) is rotatably connected to a U-shaped frame (10); the pitch bag (1) is rotatably connected to the U-shaped frame (10); the rotation axis of the pitch bag (1) and the rotation axis of the U-shaped frame (10) are perpendicular to each other; a stepped labyrinth groove (31) is provided at the connecting end of the U-shaped frame (10) and the pitch bag (1); the sealing ring (3) is embedded in the labyrinth groove (31) and is oil-sealed; a special-shaped groove (42) is provided at the connecting part of the azimuth seat (2) and the U-shaped frame (10); a spring (41) is embedded in the special-shaped groove (42); the graphite ring (4) is embedded in the special-shaped groove (42) and abuts against the spring (41) to seal the inside of the azimuth seat (2).

2. The servo turntable for a video monitoring station according to claim 1, characterized in that: A turntable (28) is rotatably connected to the top of the orientation seat (2), the bottom of the turntable (28) is in contact with the graphite ring (4), and the top surface of the turntable (28) is fixedly connected to the U-shaped frame (10).

3. A servo turntable for a video monitoring station according to claim 2, characterized in that: A pitch motor (11) is fixedly connected to one side of the top of the U-shaped frame (10), and rotating shafts (15) are fixedly connected to both sides of the pitch bag (1). The rotating shafts (15) extend into the U-shaped frame (10) and are connected to the pitch motor (11) to drive the pitch bag (1) to rotate.

4. The servo turntable for a video monitoring station according to claim 3, characterized in that: The output end of the pitch motor (11) is connected to a reducer (12), the output end of the reducer (12) is rotatably connected to a small gear (13), and a large gear (14) is fixedly connected to the outside of the rotating shaft (15) near one end of the small gear (13), and the small gear (13) is meshed with the large gear (14).

5. The servo turntable for a video monitoring station according to claim 4, characterized in that: An electromagnet (17) is installed at one end of the rotating shaft (15) away from the large gear (14).

6. A servo turntable for a video monitoring station according to claim 5, characterized in that: A Hall switch (19) is installed at one end of the rotating shaft (15) away from the large gear (14).

7. The servo turntable for a video monitoring station according to claim 6, characterized in that: A pitch code disc (18) is installed on one side of the U-shaped frame (10) close to the electromagnet (17), and the pitch code disc (18) is connected to the rotating shaft (15).

8. The servo turntable for a video monitoring station according to claim 7, characterized in that: A seat cover (25) is fixedly connected in the azimuth seat (2), an azimuth motor (21) is fixedly connected in the azimuth seat (2) below the seat cover (25), an azimuth shaft (22) is rotatably connected in the seat cover (25), and the azimuth shaft (22) is rotatably connected to the azimuth motor (21) and fixedly connected to a turntable (28).

9. The servo turntable for a video monitoring station according to claim 8, characterized in that: A collector ring (27) is fixedly connected inside the azimuth shaft (22).

10. A servo turntable for a video monitoring station according to claim 9, characterized in that: The bottom of the azimuth shaft (22) extends out of the azimuth motor (21) and is connected to an azimuth code disc (23).

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