Column type double-holder monitoring device

Abstract

The invention discloses a column type double-holder monitoring device, which relates to the technical field of monitoring and comprises a fixed tube, two holder monitoring units are arranged on the fixed tube, and the holder monitoring units can perform sine patrol; the pan-tilt monitoring unit comprises a pan-tilt frame, the pan-tilt frame is arranged on the fixed pipe in a sleeving mode and can rotate on the fixed pipe, a pitch angle adjusting module is arranged on one side in the pan-tilt frame, a camera module is arranged in the pan-tilt frame, the pitch angle adjusting module is connected with the camera module, and the pitch angle adjusting module can adjust the pitch angle of the camera module; a yaw angle adjusting module is arranged between the holder frame and the fixed pipe, and the yaw angle adjusting module can adjust the yaw angle of the holder frame; pan-tilt columns are stacked, and two pan-tilt monitoring units are arranged for sine patrol, so that the problems that a traditional monitoring structure is large in occupied space, and all-directional environment visual information acquisition cannot be realized are solved.

Description

Technical Field

[0001] The invention relates to the field of monitoring technology, in particular to a column-type double-pan-tilt monitoring device. Background Art

[0002] PTZ monitoring equipment plays an important role in the industrial field. The operation, maintenance, monitoring and decommissioning of industrial facilities will involve a large amount of environmental visual recognition and monitoring. Industrial robots and automation equipment also rely on visual systems as visual feedback to achieve environmental perception and three-dimensional reconstruction.

[0003] However, due to its simple structure, the traditional fixed surveillance camera can only monitor a fixed angle range and cannot meet the needs of obtaining all-round environmental visual information. In addition, the traditional monitoring structure also faces the problems of complex installation and large space occupation. Therefore, the present invention proposes a column-type dual-pan-tilt monitoring device, which aims to provide a solution with simple structure, all-round monitoring and easy installation. Summary of the invention

[0004] In order to solve the problems in the background technology, the present invention provides a column-type dual pan-tilt monitoring device, which stacks the pan-tilt columns and sets two pan-tilt monitoring units to perform sinusoidal patrols, so as to solve the problem that the traditional monitoring structure occupies a large space and cannot realize the acquisition of all-round environmental visual information.

[0005] The above-mentioned optimized structure of the present invention is realized by the following technical solutions: a column-type dual-pan-tilt monitoring device, comprising a fixed tube, on which two pan-tilt monitoring units are arranged, and the pan-tilt monitoring units can perform sinusoidal patrol; The pan-tilt monitoring unit comprises a pan-tilt frame, the pan-tilt frame is sleeved on the fixed tube and can rotate on the fixed tube, a pitch angle adjustment module is provided on one side of the pan-tilt frame, a camera module is provided in the pan-tilt frame, the pitch angle adjustment module is connected to the camera module, and the pitch angle adjustment module can adjust the pitch angle of the camera module; A yaw angle adjustment module is provided between the gimbal frame and the fixed tube, and the yaw angle adjustment module can adjust the yaw angle of the gimbal frame.

[0006] In some embodiments, the yaw angle adjustment module includes a motor mounting seat, the motor mounting seat is arranged on the bottom plate of the gimbal frame, a yaw angle motor is provided on the motor mounting seat, a yaw angle motor is connected to the yaw angle motor output shaft, the yaw angle motor output shaft passes through the gimbal frame, and the yaw angle motor output shaft is transmission-connected to the fixed tube.

[0007] In some embodiments, a driving pulley is sleeved on the output shaft of the yaw angle motor, a driven pulley is coaxially sleeved on the fixed tube, and the driving pulley and the driven pulley are connected via a synchronous belt transmission.

[0008] In some embodiments, the motor mount is made of fiberglass.

[0009] In some embodiments, the pitch angle adjustment module includes a pitch angle motor, which is arranged on one side of the gimbal frame. The pitch angle motor is connected to a pitch angle motor output shaft, and the pitch angle motor output shaft passes through the side wall of the gimbal frame and is connected to a pitch angle driving crank. One end of the pitch angle driving crank is hinged with a pitch angle connecting rod, and the pitch angle connecting rod is hinged to the camera module.

[0010] In some embodiments, the pitch angle motor is a DC brushless hollow shaft motor, a pitch angle connecting rod shaft connecting plate is connected between the rotor of the pitch angle motor and the output shaft of the pitch angle motor, and the stator of the pitch angle motor is arranged on the side of the gimbal frame close to the pitch angle drive crank.

[0011] In some embodiments, the camera module includes two camera mounting plates, which are arranged in parallel on the top of the gimbal frame and above the yaw angle adjustment module and the pitch angle adjustment module. The two camera mounting plates are connected by multiple connecting rods, and pitch angle load cranks are symmetrically provided on both sides of the two camera mounting plates. The two pitch angle load cranks are respectively hinged to the two side walls of the gimbal frame, and the pitch angle load crank close to the pitch angle adjustment module is hinged to the pitch angle adjustment module, and the camera is arranged between the two camera mounting plates.

[0012] In some embodiments, a frame mounting module is provided between the pan / tilt frame and the fixed tube, and the frame mounting module includes a bearing mounting seat, a bearing fixing seat, a bearing inner ring fixing plate, and a ball bearing; The bearing fixing seat is sleeved on the fixing tube, a ball bearing is sleeved on the bearing fixing seat, a bearing mounting seat is sleeved on the ball bearing outer sleeve, and the bearing inner ring fixing plate is arranged inside the bearing mounting seat.

[0013] In some embodiments, the yaw angle motor is a brushless DC reduction motor.

[0014] In some embodiments, the gimbal frame is made of carbon fiber sheet material.

[0015] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects or advantages: The present invention realizes a simple and quick installation process through its compact structural design and modular components. At the same time, the two-degree-of-freedom rotation of the pan-tilt monitoring unit is realized through the yaw angle adjustment module and the pitch angle adjustment module, ensuring the rapid response and all-round monitoring capability of the pan-tilt monitoring unit.

[0016] The present invention uses a two-degree-of-freedom pan-tilt monitoring unit, which can not only improve the real-time and accuracy of monitoring, but also can build a three-dimensional vision system by using two pan-tilt monitoring units in combination, and enhance monitoring efficiency by relying on intelligent image processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a column-type dual-pan-tilt monitoring device according to the present invention; Figure 2 A front view of a column-type dual-pan-tilt monitoring device according to the present invention; Figure 3 It is a left view of a column type dual PTZ monitoring device according to the present invention; Figure 4 is a cross-sectional view of a yaw angle adjustment module according to the present invention; Figure 5 is a structural schematic diagram of a pitch angle adjustment module according to the present invention; Figure 6 is a cross-sectional view of a pitch angle adjustment module according to the present invention; Figure 7 A cross-sectional view of a frame mounting module according to the present invention; Figure 8 is a schematic structural diagram of a camera module according to the present invention; Markings in the figure: 1. gimbal frame; 2. camera module; 3. yaw angle adjustment module; 4. frame mounting module; 5. pitch angle adjustment module; 6. fixed tube; 7. yaw angle motor; 8. motor mounting seat; 9. driving pulley; 10. bearing; 11. yaw angle motor output shaft; 12. driven pulley; 13. synchronous belt; 14. pitch angle load crank; 15. pitch angle connecting rod; 16. pitch angle driving crank; 17. pitch angle motor output shaft; 18. pitch angle motor; 19. pitch angle connecting rod shaft connecting plate; 20. bearing mounting seat; 21. ball bearing; 22. bearing fixing seat; 23. bearing inner ring fixing plate; 24. connecting rod; 25. camera; 26. camera mounting plate. DETAILED DESCRIPTION

[0019] 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 intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1-8 As shown, a column-type dual-pan-tilt monitoring device includes a fixed tube 6, on which two pan-tilt monitoring units are arranged. The pan-tilt monitoring units can perform sinusoidal patrols to achieve comprehensive monitoring of a wide range of scenes.

[0024] The inspection directions of the two PTZ monitoring units can be inconsistent, so that the entire monitoring device can obtain two different yaw angle fields of view at the same time. When the camera of a PTZ monitoring unit finds a target, it will send the target point coordinates to the other PTZ monitoring unit. Since the two PTZ monitoring units are coaxially distributed, the same target point only needs to add an offset in the Z-axis direction to obtain the position of the target point relative to the other PTZ monitoring unit, thereby realizing the monitoring device's comprehensive monitoring of a wide range of scenes and the rapid detection of targets.

[0025] The pan-tilt monitoring unit includes a pan-tilt frame 1, a camera module 2, a yaw angle adjustment module 3, a frame installation module 4 and a pitch angle adjustment module 5. The pan-tilt frame 1 is sleeved on a fixed tube 6 and can rotate relative to the fixed tube 6. A pitch angle adjustment module 5 is provided on one side of the pan-tilt frame 1. A camera module 2 is provided in the pan-tilt frame 1. The pitch angle adjustment module 5 is connected to the camera module 2. The pitch angle adjustment module 5 can adjust the pitch angle of the camera module 2. A yaw angle adjustment module 3 is provided between the pan-tilt frame 1 and the fixed tube 6. The yaw angle adjustment module 3 can adjust the yaw angle of the pan-tilt frame 1. Through the cooperation of the yaw angle adjustment module 3 and the pitch angle adjustment module 5, the two-degree-of-freedom movement of the pan-tilt monitoring unit can be realized, so that the pan-tilt monitoring unit can perform sinusoidal patrol, thereby realizing comprehensive monitoring of a large range of scenes.

[0026] In order to reduce the rotational inertia of the pan-tilt monitoring unit, the pan-tilt frame 1 is arranged along the rotation center axis of the yaw axis. The pan-tilt frame 1 is assembled with a mortise and tenon structure made of carbon fiber material, and connected with right-angle connectors such as aluminum bars at the bottom, while the fixed tube 6 is made of a carbon fiber tube. Carbon fiber can reduce the weight of the pan-tilt frame 1 due to its light weight, high temperature resistance, friction resistance, heat conduction and corrosion resistance, thereby reducing the resistance of the pan-tilt monitoring unit during rotation. At the same time, the anti-friction performance of carbon fiber also extends the service life of the pan-tilt frame 1 and the fixed tube 6.

[0027] like Figure 4As shown, in order to adjust the yaw angle of the pan-tilt monitoring unit, the yaw angle adjustment module 3 in some embodiments includes a motor mounting seat 8, a yaw angle motor 7, a driving pulley 9, a yaw angle motor output shaft 11, a driven pulley 12 and a synchronous belt 13. The yaw angle adjustment module 3 can be composed of aluminum alloy processed parts and carbon fiber plates. The motor mounting seat 8 can be made of glass fiber material, which has the characteristics of light weight, high strength, and corrosion resistance. It is firmly set on the bottom plate of the pan-tilt frame 1 for installing the yaw angle motor 7. The yaw angle motor 7 can be DM-J4310 produced by Shenzhen Damiao Technology Co., Ltd. The yaw angle motor 7 is connected to the yaw angle motor output shaft 11, which runs through the pan-tilt frame 1 and is transmission-connected to the fixed tube 6. Considering the need to provide reserved space for the central fixed tube 6, a driving pulley 9 is sleeved on the yaw motor output shaft 11, and a driven pulley 12 is coaxially sleeved on the fixed tube 6. The driving pulley 9 and the driven pulley 12 are connected by a synchronous belt 13. When the yaw motor 7 is started, the yaw motor 7 drives the yaw motor output shaft 11 to drive the driving pulley 9 to rotate, and then through the transmission of the synchronous belt 13, the driving pulley 9 moves circumferentially around the driven pulley 12, thereby driving the pan-tilt frame 1 to rotate, and then the yaw angle of the pan-tilt monitoring unit is adjusted. During the rotation of the pan-tilt frame 1, the driving pulley 9 is subjected to the compression force of the synchronous belt 13, which is a large radial load. In order to prevent the compression force from acting directly on the yaw motor output shaft 11, causing the yaw motor output shaft 11 to bend and causing the motor to rotate inconsistently, the bearing 10 selects a thin-walled bearing 6707 to ensure that the strength and rigidity of the shaft are sufficient to withstand the transmitted torque and bending moment.

[0028] Considering that there may be a risk of carbon powder entering the motor when the carbon fiber gimbal frame 1 is in direct contact with the yaw motor 7, a glass fiber motor mount 8 is used for isolation in these embodiments. At the same time, cavities are milled on the gimbal frame 1 and the motor mount 8. These cavities not only play a role in the installation and centering of the motor mount 8 and the yaw motor 7, but also ensure the accuracy of the installation position of the yaw motor 7. The yaw motor output shaft 11 is made of a step surface milled from a 25mm thick fiberglass board, and is positioned with the bearing 10 (preferably a thin-walled bearing 6707) by an interference fit. The active pulley 9 is also positioned with the yaw motor output shaft 11 by an interference fit. The bearing 10 is installed on the gimbal frame 1, and its outer ring is pressed by the motor mount 8, while the step surface of the yaw motor output shaft 11 and the bearing inner ring gasket press its inner ring. This design ensures a high degree of coaxiality between the motor, the yaw angle motor output shaft 11 and the driving pulley 9, thereby improving the stability and reliability of the entire yaw angle adjustment module.

[0029] like Figure 5 , Figure 6 As shown, in some embodiments, the pitch angle adjustment module 5 includes a pitch angle motor 18, a pitch angle motor output shaft 17, a pitch angle driving crank 16, a pitch angle connecting rod 15 and a pitch angle load crank 14. The pitch angle motor 18 is arranged on one side of the gimbal frame 1. The pitch angle motor 18 is connected to the pitch angle motor output shaft 17, the pitch angle motor output shaft 17 passes through the side wall of the gimbal frame 1, and is connected to the pitch angle driving crank 16, one end of the pitch angle driving crank 16 is hinged with the pitch angle connecting rod 15 to form a connecting rod transmission mechanism, the pitch angle connecting rod 15 is hinged to the camera module 2, and the pitch angle motor output shaft 17 is rotated by the drive of the pitch angle motor 18, so that the pitch angle driving crank 16 drives the pitch angle connecting rod 15 to move, thereby realizing the pitch angle adjustment of the camera module 2.

[0030] In some embodiments, the pitch angle motor 18 can use a DC brushless hollow shaft motor, which has the characteristics of compact structure, light weight, and large output torque. The model can be GM6020 motor. The stator of the pitch angle motor 18 is installed on the side wall of the gimbal frame 1 close to the pitch angle drive crank 16. The rotor of the pitch angle motor 18 is connected to a pitch angle connecting rod shaft connecting plate 19, and the pitch angle connecting rod shaft connecting plate 19 is connected to the pitch angle motor output shaft 17. The pitch angle motor output shaft 17 passes through the rotor of the pitch angle motor 18. In order to ensure the accuracy and stability of the pitch angle adjustment, bolt holes and grooves are provided on the side wall of the gimbal frame 1 close to the pitch angle adjustment module 5 to limit the adjustment range of the pitch angle. The adjustment range can be between +32° and -22°.

[0031] like Figure 7 As shown, in some embodiments, in order to ensure a stable connection and smooth rotation between the pan / tilt frame 1 and the fixed tube 6, a frame mounting module 4 is provided between the pan / tilt frame 1 and the fixed tube 6, and the frame mounting module 4 includes a bearing mounting seat 20, a bearing fixing seat 22, a bearing inner ring fixing plate 23, and a ball bearing 21; the bearing fixing seat 22 is sleeved on the fixed tube 6, and a perforated array can be provided on the bearing fixing seat 22 to connect with a rivet nut, and a rivet nut can be reserved on the fixed tube 6, and the rivet nut and the bearing fixing seat 22 cooperate to achieve the two The mechanical cooperation of the two fixes the pan-tilt monitoring unit firmly on the fixing tube 6. The bearing fixing seat 22 is sleeved with a ball bearing 21. The ball bearing 21 can adopt a thin-walled deep groove ball bearing 61812. The outer sleeve of the ball bearing 21 is provided with a bearing mounting seat 20. The inner ring of the bearing mounting seat 20 is provided with a bearing inner ring fixing plate 23. The ball bearing 21 plays a supporting and rotating role. The outer ring of the ball bearing 21 is pressed by the bearing mounting seat 20, and the inner ring is pressed by the bearing inner ring fixing plate 23 and the bearing fixing seat 22, thereby ensuring the stability and reliability of the ball bearing 21.

[0032] like Figure 8As shown, in some embodiments, the camera module 2 includes two camera mounting plates 26, multiple connecting rods 24 and a camera 25. The two camera mounting plates 26 are arranged in parallel on the top of the gimbal frame 1 and are arranged above the yaw angle adjustment module 3 and the pitch angle adjustment module 5. The two camera mounting plates 26 are connected by multiple connecting rods 24 to form a stable support structure, and pitch angle load cranks 14 are symmetrically arranged on both sides of the two camera mounting plates 26. The two pitch angle load cranks 14 are respectively hinged to the two side walls of the gimbal frame 1, and the pitch angle load crank 14 close to the pitch angle adjustment module 5 is hinged to the pitch angle adjustment module 5 to ensure the stability and load transfer capacity of the camera module 2 during the pitch angle adjustment process. A camera 25 is arranged between the two camera mounting plates 26, and the camera 25 can be a Hikvision industrial camera. The two pitch angle load cranks 14 play the role of supporting and transmitting the pitch angle load, ensuring the stability of the camera module 2 during the pitch angle adjustment process. Through the adjustment of the pitch angle adjustment module 5, monitoring at different angles can be achieved.

[0033] In some embodiments, the yaw angle motor 7 can be a brushless DC reduction motor, which has the advantages of small size, light weight, high power, and high efficiency, and provides power support for the yaw angle adjustment of the pan-tilt monitoring unit.

[0034] The specific working principle is as follows: The yaw angle motor 7 drives the active pulley 9 to move around the driven pulley 12 in a circumferential direction, thereby driving the entire gimbal frame 1 to rotate in the yaw angle direction. The pitch angle motor 18 drives the pitch angle drive crank 16 to drive the pitch angle connecting rod 15 to move, thereby realizing the pitch angle adjustment of the camera module 2. The gimbal monitoring unit patrols in a sinusoidal manner through the coordinated work of the yaw angle adjustment module 3 and the pitch angle adjustment module 5, thereby realizing the comprehensive monitoring of a large range of scenes by the camera 25.

[0035] The inspection directions of the two PTZ monitoring units are inconsistent, so two different yaw angles of view can be obtained at the same time, which can detect the target faster. When the camera of a PTZ monitoring unit detects the target, it will send the target point coordinates to the other PTZ monitoring unit. Since the two PTZ monitoring units are coaxially distributed, the same target point only needs to add an offset in the Z-axis direction to obtain the position of the target point relative to the other PTZ monitoring unit.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. 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 column-type dual-pan-tilt monitoring device, characterized in that: It comprises a fixed tube (6), on which two pan-tilt monitoring units are arranged, and the pan-tilt monitoring units can perform sinusoidal patrols; The pan-tilt monitoring unit comprises a pan-tilt frame (1), the pan-tilt frame (1) being sleeved on the fixing tube (6) and being rotatable on the fixing tube (6), a pitch angle adjustment module (5) being provided on one side of the pan-tilt frame (1), a camera module (2) being provided in the pan-tilt frame (1), the pitch angle adjustment module (5) being connected to the camera module (2), and the pitch angle adjustment module (5) being capable of adjusting the pitch angle of the camera module (2); A yaw angle adjustment module (3) is provided between the pan / tilt frame (1) and the fixed tube (6), and the yaw angle adjustment module (3) can adjust the yaw angle of the pan / tilt frame (1).

2. A column-type dual-pan-tilt monitoring device according to claim 1, characterized in that: The yaw angle adjustment module (3) comprises a motor mounting seat (8), the motor mounting seat (8) being arranged on the bottom plate of the gimbal frame (1), the motor mounting seat (8) being provided with a yaw angle motor (7), the yaw angle motor (7) being connected to a yaw angle motor output shaft (11), the yaw angle motor output shaft (11) passing through the gimbal frame (1), and the yaw angle motor output shaft (11) being drivingly connected to the fixing tube (6).

3. A column-type dual-pan-tilt monitoring device according to claim 2, characterized in that: A driving pulley (9) is sleeved on the yaw angle motor output shaft (11), a driven pulley (12) is coaxially sleeved on the fixed tube (6), and the driving pulley (9) and the driven pulley (12) are connected in transmission via a synchronous belt (13).

4. A column-type dual-pan-tilt monitoring device according to claim 2, characterized in that: The motor mounting seat (8) is made of glass fiber.

5. The column-type dual-pan-tilt monitoring device according to claim 1, characterized in that: The pitch angle adjustment module (5) comprises a pitch angle motor (18), the pitch angle motor (18) being arranged on one side of the gimbal frame (1), the pitch angle motor (18) being connected to a pitch angle motor output shaft (17), the pitch angle motor output shaft (17) penetrating a side wall of the gimbal frame (1) and being connected to a pitch angle driving crank (16), one end of the pitch angle driving crank (16) being hinged to a pitch angle connecting rod (15), and the pitch angle connecting rod (15) being hinged to the camera module (2).

6. A column-type dual-pan-tilt monitoring device according to claim 5, characterized in that: The pitch angle motor (18) is a brushless DC hollow shaft motor, a pitch angle connecting rod shaft connecting plate (19) is connected between the rotor of the pitch angle motor (18) and the pitch angle motor output shaft (17), and the stator of the pitch angle motor (18) is arranged on a side of the pan / tilt frame (1) close to the pitch angle driving crank (16).

7. The column-type dual-pan-tilt monitoring device according to claim 1, characterized in that: The camera module (2) comprises two camera mounting plates (26), the two camera mounting plates (26) being arranged in parallel on the top of the gimbal frame (1) and being arranged above the yaw angle adjustment module (3) and the pitch angle adjustment module (5), the two camera mounting plates (26) being connected via a plurality of connecting rods (24), and pitch angle load cranks (14) being symmetrically arranged on both sides of the two camera mounting plates (26), the two pitch angle load cranks (14) being respectively hinged to the two side walls of the gimbal frame (1), and the pitch angle load crank (14) on the side close to the pitch angle adjustment module (5) being hinged to the pitch angle adjustment module (5), and the camera (25) being arranged between the two camera mounting plates (26).

8. The column-type dual-pan-tilt monitoring device according to claim 1, characterized in that: A frame mounting module (4) is provided between the pan / tilt frame (1) and the fixed tube (6), and the frame mounting module (4) comprises a bearing mounting seat (20), a bearing fixing seat (22), a bearing inner ring fixing plate (23), and a ball bearing (21); The bearing fixing seat (22) is sleeved on the fixing tube (6), a ball bearing (21) is sleeved on the bearing fixing seat (22), a bearing mounting seat (20) is disposed outside the ball bearing (21), and the bearing inner ring fixing plate (23) is disposed inside the bearing mounting seat (20).

9. The column-type dual-pan-tilt monitoring device according to claim 2, characterized in that: The yaw angle motor (7) is a brushless DC reduction motor.

10. The column-type dual-pan-tilt monitoring device according to claim 1, characterized in that: The pan / tilt frame (1) is made of carbon fiber sheet material.

Images