Central shaft two-dimensional holder device and photographic swing arm equipment

Abstract

The utility model discloses a kind of central axis two-dimensional holder device and photographic rocker arm equipment, belong to the technical field of film and television shooting equipment. To solve the problem that traditional telescopic gun holder is difficult to coordinate with multiple shafts due to lack of angle feedback, the device monitors the rotation amount of the heading axis and the pitch axis angle in real time through the first angle sensor and the second angle sensor. The control component can calculate based on the rotation amount of the heading axis and the pitch axis angle. The control component can output instructions to control the telescopic rod group based on the rotation amount of the heading axis and the pitch axis angle, so that the central axis two-dimensional holder and the telescopic rod group are linked. It can complete the constant radius motion around the shooting target or maintain the shooting angle to realize linear trajectory motion and other modes of lens operation, reducing the difficulty of lens shooting.

Description

Technical Field

[0001] This utility model relates to the field of film and television shooting equipment technology, specifically a central axis two-dimensional gimbal device with integrated motion control algorithm and a camera crane device including the device. Background Technology

[0002] In the field of professional film and television shooting, the "telescopic tele ...

[0003] Traditional telescopic telescopic guns typically only support manual, feedback-free rotation of the yaw and pitch axes, lacking yaw and pitch axis angle monitoring capabilities. Consequently, when the motorized telescopic boom is swaying on the telescopic telescopic boom, the operator must simultaneously manually control the extension length of the motorized telescopic boom, making it difficult to achieve multi-axis coordinated movement. This is especially true for radial panning centered on the target, where the extension length of the motorized telescopic boom must be determined based on the rotation of the yaw and pitch axes. Manual operation can easily lead to image shake or target deviation. Utility Model Content

[0004] This invention provides a central axis two-dimensional gimbal device and a camera jib arm. The device monitors the rotation of the yaw and pitch axes in real time using a first angle sensor and a second angle sensor. The control component can calculate based on the rotation of the yaw and pitch axes and output control commands to the telescopic rod assembly to control the telescopic amount. This allows the central axis two-dimensional gimbal and the telescopic rod assembly to work together to perform camera movements in various modes, such as constant radius movement around the target or linear trajectory movement while maintaining the shooting angle, thus reducing the difficulty of camera movement.

[0005] To achieve the above objectives, this utility model provides a central axis two-dimensional gimbal device, comprising:

[0006] A base, the bottom of which is used for support;

[0007] A support component, the bottom of which is rotatably connected to the top of the base via a yaw axis mechanism;

[0008] A support platform, the middle of which is rotatably connected to the support component via a pitch axis mechanism; the support platform is used to install an electric telescopic pole assembly.

[0009] A first angle sensor is disposed on the base or support component and is used to detect the angle of rotation of the support component relative to the base in the yaw axis direction;

[0010] A second angle sensor is disposed on the support component or the bearing platform and is used to detect the angle of rotation of the bearing platform relative to the support component in the pitch axis direction.

[0011] The control component is electrically connected to the first angle sensor and the second angle sensor, and is also electrically connected to the electric telescopic pole assembly; the control component can control the extension and retraction length of the electric telescopic pole assembly based on the angle data from the first angle sensor and the second angle sensor.

[0012] The power supply component is electrically connected to the first angle sensor, the second angle sensor, and the control component, and is also used to provide power to the electric telescopic pole assembly.

[0013] Furthermore, as a more preferred embodiment of the present invention, the supporting component includes a supporting platform, the top of the supporting platform is provided with the first angle sensor, and the middle of the supporting platform is provided with a connecting groove for connecting the heading axis mechanism.

[0014] The heading axis mechanism includes:

[0015] A first bearing housing is disposed within the connecting groove, and the outer ring of the first bearing housing is connected to the inner ring of the connecting groove.

[0016] A turntable, the turntable being connected to the inner ring of the first bearing housing;

[0017] A rotating shaft is located at the top of the support platform, with one end extending into the first bearing seat and connected to the end of the turntable. The other end of the rotating shaft is provided with a first transmission part, which is connected to the first angle sensor.

[0018] Furthermore, as a more preferred embodiment of this utility model, the top of the supporting component is provided with a receiving window; the bearing platform is disposed within the receiving window; the inner walls on both sides of the receiving window are respectively provided with mounting grooves; the mounting grooves are provided with the pitch axis mechanism.

[0019] The pitch axis mechanism includes:

[0020] The second bearing housing is disposed in the mounting groove, and the outer ring of the second bearing housing is connected to the mounting groove;

[0021] A connecting shaft is disposed on the inner ring of the second bearing housing, and one end of the connecting shaft is fixedly connected to the bearing platform; the other end of the connecting shaft is provided with a second transmission part, which is connected to the second angle sensor in a transmission manner.

[0022] Furthermore, as a more preferred embodiment of this utility model, the supporting platform includes:

[0023] The platform body has a sliding platform located at the top center.

[0024] The first swing arm has one end connected to one side of the platform body, and the other end connected to a connecting shaft.

[0025] The second swing arm has one end connected to the other side of the platform body at its middle, and the other end connected to another connecting shaft.

[0026] Furthermore, as a more preferred embodiment of this utility model, the bearing platform further includes a limiting plate and fasteners. The limiting plate is connected to one side of the first swing arm. The limiting plate is provided with an arc-shaped limiting groove, which is coaxial with the connecting shaft. The fasteners are disposed in the arc-shaped limiting groove and are movably connected to one side of the support component. When locked, the fasteners can press the two sides of the arc-shaped limiting groove against one side of the support component.

[0027] Furthermore, as a more preferred embodiment of this utility model, the support platform includes:

[0028] A supporting body, wherein the connecting groove is disposed in the middle of the supporting body;

[0029] A damping adjustment plate is disposed on the top of the support body, and the damping adjustment plate is provided with a first abutting ring, which is used to movably abut against the inner ring of the first bearing seat.

[0030] The damping adjustment plate is connected to the support body via at least two pretensioners; in the locked state, the pretensioners can press the first abutment ring against the inner ring of the first bearing seat.

[0031] Furthermore, as a more preferred embodiment of the present invention, the power supply component includes a transfer connector and at least one battery detachably disposed on the transfer connector; one side of the transfer connector is detachably connected to one side of the support component; the other side of the transfer connector is connected to the battery.

[0032] Furthermore, as a more preferred embodiment of this utility model, the middle part of the outer wall of the first swing arm is rotatably connected to one end of the connecting shaft. A pressure plate is installed between the outer wall of the first swing arm and the connecting shaft. A second abutting ring is provided on the side of the pressure plate facing the connecting shaft. A damping adjustment screw is provided at the other end of the connecting shaft. The damping adjustment screw extends out of the support component and is equipped with an adjusting nut. When the adjusting nut is tightened, the second abutting ring can be pressed against the side of the first swing arm through the connecting shaft and the pressure plate.

[0033] Furthermore, in a more preferred embodiment of this utility model, the outer wall of the second swing arm is connected to the control component;

[0034] The control component includes:

[0035] A housing, the housing being hollow inside;

[0036] The main control chip is disposed inside the housing;

[0037] The control button is embedded in the outer wall of the housing and is electrically connected to the main control chip.

[0038] Based on the same inventive concept, a camera crane device includes:

[0039] Such as the aforementioned two-dimensional gimbal device with a central axis;

[0040] An electric telescopic pole assembly is provided, with its bottom center connected to the top of the central axis two-dimensional gimbal device; and the electric telescopic pole assembly is electrically connected to the central axis two-dimensional gimbal device; the telescopic end of the electric telescopic pole assembly is used to connect to a three-axis stabilized gimbal with a camera.

[0041] The control component of the central axis two-dimensional gimbal device can output control signals to the electric telescopic rod assembly based on the angle signals from the first angle sensor and the second angle sensor, thereby adjusting the telescopic length of the electric telescopic rod assembly in real time. This allows the telescopic end of the electric telescopic rod assembly to perform a linear movement trajectory relative to a fixed spatial reference point, or to perform a panning motion trajectory centered on the target point with a variable radial distance. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0043] Figure 1 This is an exploded view of the overall structure of the central axis two-dimensional gimbal device in this embodiment.

[0044] Figure 2 This is a half-section diagram of the central axis two-dimensional gimbal device in this embodiment.

[0045] Figure 3 This is a three-dimensional structural diagram of the central axis two-dimensional gimbal device in this embodiment.

[0046] Figure 4 This is another schematic diagram of the three-dimensional structure of the axial two-dimensional gimbal device in this embodiment.

[0047] Figure 5 This is a three-dimensional structural diagram of the camera crane device in this embodiment.

[0048] Figure 6 This is a three-dimensional structural diagram of the control panel in this embodiment.

[0049] Figure label:

[0050] 100-Central axis two-dimensional gimbal device, 200-Base, 300-Support component, 310-Support platform, 320-Support arm, 301-Accommodation window, 302-Mounting slot, 400-Bearing platform, 410-Platform body, 411-Slide table, 420-First swing arm, 430-Second swing arm, 450-Limiting plate, 451-Arc limiting groove, 452-Angle scale, 500-First angle sensor, 600-Second angle sensor, 700-Control component, 710-Housing, 720-Main control chip, 721-Circuit board, 730-Control button, 800-Power supply component, 810-Transfer connector, 820-Battery, 110-Yaw axis mechanism, 111- First bearing housing, 111a-bearing ring cover, 111b-bearing sealing ring, 120-turntable, 121-frustum protrusion, 130-rotating shaft, 131-first transmission part, 340-sealing cover, 140-pitch axis mechanism, 141-second bearing housing, 150-connecting shaft, 151-second transmission part, 440-pressure plate, 441-second abutment ring, 152-damping adjustment screw, 153-adjusting nut, 330-damping adjustment plate, 331-first abutment ring, 332-pre-tightening component, 460-fastener, 900-electric telescopic rod assembly, 910-fixed end, 920-telescopic end, 930-three-axis stabilized gimbal, 940-control panel, 941-touch screen. Detailed Implementation

[0051] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0053] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0055] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0056] Example

[0057] This embodiment aims to address the common problem that traditional telescopic gimbal devices (such as the central axis 2D gimbal 100) typically only support passive rotation of the yaw and pitch axes, lacking yaw and pitch axis angle monitoring capabilities. This results in the operator needing to manually control the extension length of the electric telescopic boom 900 while it is swaying on the central axis 2D gimbal 100, making multi-axis coordinated movement difficult. Especially when panning radially around the target, the operator must determine the extension length of the electric telescopic boom 900 based on the yaw and pitch axis angle rotations, and manual operation easily leads to image shake or target deviation. Therefore, referring to… Figure 1-6 As shown, a central axis two-dimensional gimbal device 100 and a camera jib arm device are provided. The rotation of the yaw axis and pitch axis angles is monitored in real time by a first angle sensor 500 and a second angle sensor 600. The control component 700 can calculate based on the rotation of the yaw axis and pitch axis angles and output a control command to the electric telescopic rod assembly 900 to control the telescopic amount. This enables the central axis two-dimensional gimbal and the electric telescopic rod assembly 900 to work together to complete camera movements such as constant radius movement around the shooting target or linear trajectory movement while maintaining the shooting angle, thus reducing the difficulty of camera movement and shooting.

[0058] Reference Figure 1-4 As shown, a central axis two-dimensional gimbal device 100 includes: a base 200, a support component 300, a bearing platform 400, a first angle sensor 500, a second angle sensor 600, a control component 700, and a power supply component 800.

[0059] Reference Figure 1 As shown, the bottom of the base 200 is used for support; the bottom of the support member 300 is rotatably connected to the top of the base 200 via a yaw axis mechanism 110; the middle of the bearing platform 400 is rotatably connected to the support member 300 via a pitch axis mechanism 140; the bearing platform 400 is used to mount the electric telescopic rod assembly 900; a first angle sensor 500 is disposed on the base 200 or the support member 300 to detect the angle of rotation of the support member 300 relative to the base 200 in the yaw axis direction; a second angle sensor 600 is disposed on the support member 300 or the bearing platform 400 to detect the bearing angle. The platform 400 rotates relative to the support component 300 at the angle of the pitch axis; the control component 700 is electrically connected to the first angle sensor 500 and the second angle sensor 600, and the control component 700 is also used to electrically connect the electric telescopic pole assembly 900; the control component 700 can control the telescopic length of the electric telescopic pole assembly 900 according to the angle data of the first angle sensor 500 and the second angle sensor 600; the power supply component 800 is electrically connected to the first angle sensor 500, the second angle sensor 600 and the control component 700, and the power supply component 800 is also used to provide power to the electric telescopic pole assembly 900.

[0060] Reference Figure 1 and 2 As shown, in some embodiments, the support component 300 includes a support platform 310, with a first angle sensor 500 disposed on the top of the support platform 310 and a connecting groove for connecting the yaw axis mechanism 110 disposed in the middle of the support platform 310. Exemplarily, the support component 300 also includes support arms 320 disposed on both sides of the support platform 310, wherein the bottom of the support arms 320 is connected to the side of the support platform 310; the support platform 310 and the support arms 320 on both sides can form a U-shaped rigid support structure.

[0061] Reference Figure 1 and 2 As shown, the heading axis mechanism 110 includes a first bearing housing 111, a turntable 120, and a rotating shaft 130.

[0062] The first bearing housing 111 is disposed in the connecting groove, and the outer ring of the first bearing housing 111 is connected to the inner ring of the connecting groove; the turntable 120 is connected to the inner ring of the first bearing housing 111; the rotating shaft 130 is disposed on the top of the support platform 310, one end of which extends into the first bearing housing 111 and is connected to the end of the turntable 120, and the other end of the rotating shaft 130 is provided with a first transmission part 131, which is connected to the first angle sensor 500.

[0063] It should be added that the first bearing housing 111 includes at least one bearing, a bearing ring cover 111a, and a bearing sealing ring 111b. The connecting groove is a through-hole, and the top port of the connecting groove is a stepped port. The bearing ring cover 111a is disposed within the connecting groove, and the edge of the bearing ring cover 111a abuts against the stepped port. The stepped port limits the bearing ring cover 111a from extending out from the top of the connecting groove. At least one bearing is stacked, and the inner ring of the bearing at the top is connected to the bearing ring cover 111a. The bearing sealing ring 111b is connected to the outer ring of the bearing at the bottom and the edge of the connecting groove port.

[0064] It should be added that the top of the turntable 120 is provided with a frustum protrusion 121, which is inserted into the bottom port of the connecting groove. The turntable 120 is connected to the bearing ring cover 111a by multiple screws. During the screw pre-tightening process, the turntable 120 is fixed on the first bearing seat 111, and the multiple screws pass through the inner ring of the bearing.

[0065] For example, one end of the rotating shaft 130 is fixed to the frustum protrusion 121 on the top of the turntable 120 by multiple screws, and the first transmission part 131 at the other end can be a synchronous gear, while the first angle sensor 500 can be an encoder, which is connected to the support body by a bracket. The damping adjustment plate 330 is provided with a movable hole for the bracket to pass through, so as to avoid the adjustment of the damping adjustment plate 330. The output shaft of the encoder is also equipped with a synchronous pulley, and the two synchronous pulleys are connected by a synchronous belt drive. In some embodiments, the top of the support platform 310 is provided with a cover 340, which covers the first angle sensor 500 and the first transmission part 131.

[0066] Reference Figure 1 and 2 As shown, in some embodiments, the top of the support member 300 is provided with a receiving window 301; the bearing platform 400 is disposed in the receiving window 301; the inner walls on both sides of the receiving window 301 are respectively provided with mounting grooves 302; the mounting grooves 302 are provided with pitch axis mechanisms 140.

[0067] The pitch axis mechanism 140 includes a second bearing housing 141 and a connecting shaft 150.

[0068] The second bearing housing 141 is disposed in the mounting groove 302, and the outer ring of the second bearing housing 141 is connected to the mounting groove 302.

[0069] A connecting shaft 150 is disposed on the inner ring of the second bearing housing 141, and one end of the connecting shaft 150 is fixedly connected to the bearing platform 400; the other end of the connecting shaft 150 is provided with a second transmission part 151, which is connected to the second angle sensor 600 in a transmission manner. For example, the second transmission part 151 can be a gear, and the second angle sensor 600 can be an existing encoder, which is connected to the support arm 320 of the support member 300 through a bracket. The detection end of the second angle sensor 600 is also provided with a gear, which is connected to the second transmission part 151 through a synchronous belt drive.

[0070] Reference Figure 1 and 2 As shown, in some embodiments, the support platform 400 includes a platform body 410, a first swing arm 420, and a second swing arm 430.

[0071] The platform body 410 has a slide 411 at the top center. For example, the slide 411 can adopt an existing slide 411 mechanism for connection with the bottom slide rail of the electric telescopic rod assembly 900.

[0072] The first swing arm 420 has one end connected to one side of the platform body 410, and the other end connected to a connecting shaft 150. The second swing arm 430 has one end connected to the other side of the platform body 410, and the other end connected to another connecting shaft 150.

[0073] Reference Figure 1 and 2 As shown, in some embodiments, the support platform 400 further includes a limiting plate 450 and a fastener 460. The limiting plate 450 is connected to one side of the first swing arm 420. The limiting plate 450 is provided with an arc-shaped limiting groove 451, which is coaxial with the connecting shaft 150. The middle part of the fastener 460 is disposed in the arc-shaped limiting groove 451 and is movably connected to one side of the support member 300. When locked, the fastener 460 can press the two sides of the arc-shaped limiting groove 451 against one side of the support member 300. The fastener 460 can be an existing hand-operated screw, which is threadedly connected to a threaded hole on one side of the support member 300. In some embodiments, an angle scale 452 is provided along the outer periphery of the arc-shaped limiting groove 451.

[0074] Reference Figure 1 and 2 As shown, in some embodiments, the support platform 310 includes a support body, a damping adjustment plate 330, and preload members 332. A connecting groove is located in the middle of the support body; the damping adjustment plate 330 is located at the top of the support body and has a first abutting ring 331 for movably abutting against the inner ring of the first bearing seat 111; the damping adjustment plate 330 is connected to the support body via at least two preload members 332; in the locked state, the preload members 332 can press the first abutting ring 331 against the inner ring of the first bearing seat 111. For example, the preload member 332 is a hand-operated screw; an operating window is provided on the side wall of the support arm 320 to facilitate turning the preload member 332 to adjust the damping.

[0075] Reference Figure 1 and 2 As shown, in some embodiments, the power supply component 800 includes a transfer connector 810 and at least one battery 820 detachably disposed on the transfer connector 810; one side of the transfer connector 810 is detachably connected to one side of the support component 300; the other side of the transfer connector 810 is connected to the battery 820.

[0076] Reference Figure 1 and 2As shown, in some embodiments, the middle of the outer wall of the first swing arm 420 is rotatably connected to one end of the connecting shaft 150. A pressure plate 440 is installed between the outer wall of the first swing arm 420 and the connecting shaft 150. A second abutting ring 441 is provided on the side of the pressure plate 440 facing the connecting shaft 150. A damping adjustment screw 152 is provided at the other end of the connecting shaft 150. The damping adjustment screw 152 extends out of the support member 300 and is equipped with an adjusting nut 153. When the adjusting nut 153 is tightened, it can press the second abutting ring 441 against the side of the first swing arm 420 through the connecting shaft 150 and the pressure plate 440.

[0077] Reference Figure 1 and 2 As shown, in some embodiments, the outer wall of the second swing arm 430 is connected to the control component 700.

[0078] The control unit 700 includes a housing 710, a main control chip 720, and control buttons 730.

[0079] The housing 710 is hollow inside. The main control chip 720 is located inside the housing 710. Specifically, the main control chip 720 is integrated on a circuit board 721, which is fixed to the inside of the housing 710 by bolts. The control button 730 is embedded in the outer wall of the housing 710 and is electrically connected to the main control chip 720. For example, the control button 730 can be a power button.

[0080] Reference Figure 5 As shown, this embodiment also provides a camera jib arm device, including the aforementioned central axis two-dimensional gimbal device 100 and electric telescopic rod assembly 900.

[0081] The bottom center of the electric telescopic pole assembly 900 is connected to the top of the central axis two-dimensional gimbal device 100; and the electric telescopic pole assembly 900 is electrically connected to the central axis two-dimensional gimbal device 100; the telescopic end 920 of the electric telescopic pole assembly 900 is used to connect to the three-axis stabilized gimbal 930 with a camera; the control component 700 of the central axis two-dimensional gimbal device 100 can output control signals to the electric telescopic pole assembly 900 according to the angle signals of the first angle sensor 500 and the second angle sensor 600, and adjust the telescopic length of the electric telescopic pole assembly 900 in real time, so that the telescopic end 920 of the electric telescopic pole assembly 900 can perform a linear movement trajectory relative to a fixed spatial reference point, or perform a panning movement trajectory with a variable radial distance centered on the shooting target point.

[0082] For example, the electric telescopic rod assembly 900 can be an existing electric push rod, a mechanical device that converts the rotational motion of the motor into linear telescopic motion. The length adjustment is achieved through a multi-level nested structure and transmission system, such as by nesting multiple threaded screws (lower rod, middle rod, upper rod). The motor drives the bottom screw to rotate, and the upper rod is pushed out step by step through the threaded transmission. The motor is a servo motor and is electrically connected to the main control chip 720.

[0083] Reference Figure 6 As shown, it should be added that the control component 700 also includes a control panel 940, which is connected to the main control chip 720. The control panel 940 is equipped with a touch screen 941, which is used for users to input control commands. The control panel 940 is located at the fixed end 910 of the electric telescopic rod.

[0084] The electronic devices provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A central axis two-dimensional gimbal device, characterized in that, include: A base, the bottom of which is used for support; A support component, the bottom of which is rotatably connected to the top of the base via a yaw axis mechanism; A support platform, the middle of which is rotatably connected to the support component via a pitch axis mechanism; the support platform is used to install an electric telescopic pole assembly. A first angle sensor is disposed on the base or support component and is used to detect the angle of rotation of the support component relative to the base in the yaw axis direction; A second angle sensor is disposed on the support component or the bearing platform and is used to detect the angle of rotation of the bearing platform relative to the support component in the pitch axis direction. The control component is electrically connected to the first angle sensor and the second angle sensor, and is also electrically connected to the electric telescopic pole assembly; the control component can control the extension and retraction length of the electric telescopic pole assembly based on the angle data from the first angle sensor and the second angle sensor. The power supply component is electrically connected to the first angle sensor, the second angle sensor, and the control component, and is also used to provide power to the electric telescopic pole assembly.

2. The central axis two-dimensional gimbal device according to claim 1, characterized in that, The support component includes a support platform, the top of which is provided with the first angle sensor, and the middle of which is provided with a connecting groove for connecting the heading axis mechanism. The heading axis mechanism includes: A first bearing housing is disposed within the connecting groove, and the outer ring of the first bearing housing is connected to the inner ring of the connecting groove. A turntable, the turntable being connected to the inner ring of the first bearing housing; A rotating shaft is located at the top of the support platform, with one end extending into the first bearing seat and connected to the end of the turntable. The other end of the rotating shaft is provided with a first transmission part, which is connected to the first angle sensor.

3. The central axis two-dimensional gimbal device according to claim 1, characterized in that, The top of the support component is provided with a receiving window; the bearing platform is disposed within the receiving window; the inner walls on both sides of the receiving window are respectively provided with mounting grooves; the mounting grooves are provided with the pitch axis mechanism. The pitch axis mechanism includes: The second bearing housing is disposed in the mounting groove, and the outer ring of the second bearing housing is connected to the mounting groove; A connecting shaft is disposed on the inner ring of the second bearing housing, and one end of the connecting shaft is fixedly connected to the bearing platform; the other end of the connecting shaft is provided with a second transmission part, which is connected to the second angle sensor in a transmission manner.

4. The central axis two-dimensional gimbal device according to claim 3, characterized in that, The carrier platform includes: The platform body has a sliding platform located at the top center. The first swing arm has one end connected to one side of the platform body, and the other end connected to a connecting shaft. The second swing arm has one end connected to the other side of the platform body at its middle, and the other end connected to another connecting shaft.

5. The central axis two-dimensional gimbal device according to claim 4, characterized in that, The bearing platform further includes a limiting plate and fasteners. The limiting plate is connected to one side of the first swing arm. The limiting plate is provided with an arc-shaped limiting groove, which is coaxial with the connecting shaft. The fasteners are disposed in the arc-shaped limiting groove and are movably connected to one side of the support component. When locked, the fasteners can press the two sides of the arc-shaped limiting groove against one side of the support component.

6. The central axis two-dimensional gimbal device according to claim 2, characterized in that, The support platform includes: A supporting body, wherein the connecting groove is disposed in the middle of the supporting body; A damping adjustment plate is disposed on the top of the support body, and the damping adjustment plate is provided with a first abutting ring, which is used to movably abut against the inner ring of the first bearing seat. The damping adjustment plate is connected to the support body via at least two pretensioners; in the locked state, the pretensioners can press the first abutment ring against the inner ring of the first bearing seat.

7. The central axis two-dimensional gimbal device according to claim 2, characterized in that, The power supply component includes a transfer connector and at least one battery detachably mounted on the transfer connector; one side of the transfer connector is detachably connected to one side of the support component; the other side of the transfer connector is connected to the battery.

8. The central axis two-dimensional gimbal device according to claim 4, characterized in that, The middle part of the outer wall of the first swing arm is rotatably connected to one end of the connecting shaft. A pressure plate is installed between the outer wall of the first swing arm and the connecting shaft. A second abutting ring is provided on the side of the pressure plate facing the connecting shaft. A damping adjustment screw is provided at the other end of the connecting shaft. The damping adjustment screw extends out of the support component and is equipped with an adjusting nut. When the adjusting nut is tightened, it can press the second abutting ring against the side of the first swing arm through the connecting shaft and the pressure plate.

9. The central axis two-dimensional gimbal device according to claim 8, characterized in that, The control component is connected to the outer wall of the second swing arm; The control component includes: A housing, wherein the interior of the housing is hollow; The main control chip is disposed inside the housing; The control button is embedded in the outer wall of the housing and is electrically connected to the main control chip.

10. A camera crane device, characterized in that, include: The central axis two-dimensional gimbal device as described in any one of claims 1-9; An electric telescopic pole assembly is provided, with its bottom center connected to the top of the central axis two-dimensional gimbal device; and the electric telescopic pole assembly is electrically connected to the central axis two-dimensional gimbal device; the telescopic end of the electric telescopic pole assembly is used to connect to a three-axis stabilized gimbal with a camera. The control component of the central axis two-dimensional gimbal device can output control signals to the electric telescopic rod assembly based on the angle signals from the first angle sensor and the second angle sensor, thereby adjusting the telescopic length of the electric telescopic rod assembly in real time. This allows the telescopic end of the electric telescopic rod assembly to perform a linear movement trajectory relative to a fixed spatial reference point, or to perform a panning motion trajectory centered on the target point with a variable radial distance.

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