A mobile radiation-proof pan-tilt camera with strong sealing

Abstract

The utility model relates to a mobile radiation-resistant holder camera with strong sealing, which can effectively deal with harsh environments such as nuclear power plants and chemical plants. The camera comprises a base, a main body shell and an internal rotating mechanism. The main body shell is composed of an upper shell and a bottom cover, forming a closed installation cavity. The base connecting shaft extends into the cavity to support the main body rotating mechanism. This mechanism uses a circumferential bearing, an axial bearing and a first and second main body gear combination that intermesh, driven by a main body rotating motor, to achieve smooth rotation of the holder. The camera is arranged on the upper shell and can rotate independently. The base is provided with an annular protrusion that is embedded in the annular groove of the bottom cover, and is provided with an oil seal. Combined with the tight cover design of the shell, multiple dynamic seals are formed to effectively isolate radiation dust, corrosive gases and moisture. The overall structure uses radiation-resistant materials to ensure long-term operation reliability. The invention has excellent sealing, radiation resistance and flexible movement performance, ensuring the continuous provision of stable high-definition monitoring images in extreme environments.

Description

Technical Field

[0001] This utility model relates to the field of gimbal camera technology, and more specifically, to a mobile radiation-resistant gimbal camera with strong sealing performance. Background Technology

[0002] With the development of modern industry and technology, extremely stringent requirements are placed on visual monitoring and image acquisition equipment in many specialized fields, such as nuclear power plant inspections, radioactive medical environment monitoring, nuclear waste disposal facility operations, and certain chemical production sites. These environments typically present problems such as high-intensity ionizing radiation, potentially corrosive gases, dust, and high humidity. Irradiation conditions, in particular, can cause permanent damage to electronic components, leading to signal distortion or equipment malfunction. They can also cause ordinary optical lenses and sealing materials to age, become brittle, or even discolor, severely impacting image quality and equipment lifespan. Therefore, monitoring equipment capable of operating stably and reliably under such harsh conditions has become an urgent need to ensure operational safety and achieve remote, precise control.

[0003] As a core component of a surveillance system, the performance of a pan-tilt camera directly determines its ability to acquire visual information. Traditional pan-tilt cameras are often designed with a focus on movement flexibility and image clarity, and their sealing performance is usually insufficient to cope with the extreme environments mentioned above. For example, in scenarios that require regular cleaning or may come into contact with corrosive media, dust, moisture, or chemicals can easily penetrate the equipment through gaps in the pan-tilt rotating parts. This can not only cause corrosion and jamming of internal precision mechanisms (such as motors, bearings, and gears), but may also cause short circuits in the internal circuitry due to the conductivity of the medium under strong radiation, resulting in permanent damage to the equipment. In addition, mobile equipment, due to its non-fixed working position, may face more complex and variable environmental challenges, which places higher demands on the structural integrity and environmental tolerance of the equipment.

[0004] In existing technologies, some solutions attempt to use simple O-rings or gaskets for static sealing to improve the environmental adaptability of gimbal cameras. However, for components requiring relative rotational movement, such as the rotation of the gimbal body relative to the base or the pitch movement of the camera lens, the reliability of dynamic sealing remains a technical challenge. Common contact seals are prone to wear under long-term, repeated rotational friction, leading to seal failure; while non-contact seals often fail to completely block tiny dust or aerosol particles. In particular, during the rotation of the gimbal camera, the gap between its rotating shaft and the housing is a weak point in the protection.

[0005] On the other hand, the design of the motion mechanism of the gimbal camera directly affects its reliability and lifespan. In radiation-resistant applications, not only are the materials themselves required to have radiation resistance (such as specific stainless steel, ceramics, or special plastics), but the rationality of its mechanical structure is also crucial. Some existing gimbals use direct drive or simple worm gear mechanisms, which may have large backlash, insufficient positioning accuracy, or the risk of jamming after slight deformation of the material due to radiation. At the same time, in order to ensure that the camera can cover a wider monitoring range, the gimbal usually needs to achieve large-angle or even continuous horizontal rotation and vertical pitch movement. How to integrate reliable limiting mechanisms into these moving parts to prevent internal cables from breaking due to excessive rotation is also a practical engineering problem that needs to be solved. Especially for mobile equipment, its structure needs to be more compact and its weight needs to be strictly controlled, which increases the difficulty of arranging complex transmission and sealing systems in a limited space.

[0006] Furthermore, in poorly lit nuclear industrial environments or during nighttime operations, simple camera capture is insufficient to obtain clear images, making integrated supplementary lighting necessary. However, improper installation of the supplementary lights can cause problems such as image glare, lens reflections, or blind spots, affecting monitoring effectiveness. How to integrate the supplementary lights and cameras into a single, unified design that effectively supplements light without interfering with imaging, while simultaneously meeting radiation resistance and sealing requirements, is an area that needs optimization in existing technologies.

[0007] In summary, existing mobile gimbal cameras still have significant shortcomings in dealing with high-intensity radiation, stringent sealing requirements, and the reliability of complex mechanical movements. There is an urgent need for a new type of mobile radiation-resistant gimbal camera that not only possesses excellent radiation resistance but also excels in dynamic sealing of moving parts, precision and reliability of the transmission mechanism, and overall structural compactness and durability, in order to meet the stringent requirements of long-term stable and maintenance-free operation in special industrial environments. Utility Model Content

[0008] The main objective of this invention is to propose a mobile, radiation-resistant gimbal camera with strong sealing properties.

[0009] To address the aforementioned technical problems, this utility model proposes a highly sealed mobile radiation-resistant gimbal camera, comprising: a base with a housing mounting position and a connecting shaft on the housing mounting position; a main housing rotatably mounted on the housing mounting position, the main housing being divided into an upper housing and a bottom cover, the bottom of the upper housing having an opening, the bottom cover covering the bottom opening of the upper housing to form a mounting cavity, the connecting shaft passing through the bottom cover and extending into the mounting cavity; a camera mounted on the upper housing; and a main rotating mechanism disposed within the mounting cavity and connected to the base via the connecting shaft; wherein the main rotating mechanism comprises: a circumferential bearing fitted onto the connecting shaft and connected to the bottom cover; an axial bearing fitted onto the connecting shaft, its lower end abutting against the upper surface of the bottom cover; a first main gear fitted onto the connecting shaft, its bottom surface abutting against the upper end of the axial bearing; a second main gear meshing with the first main gear; and a main rotating motor disposed within the mounting cavity, the second main gear fitted onto its output shaft.

[0010] In the above technical solution, the main body rotation mechanism further includes: a main body limiting rod, sleeved on the connecting shaft and extending radially; and a motor base, fixed on the bottom cover, on which the main body rotation motor is mounted; wherein the motor base and the main body limiting rod interfere with each other, limiting the rotation angle of the main body shell relative to the base.

[0011] In any of the above technical solutions, the base is further provided with an annular protrusion, the bottom cover is provided with an annular groove, the annular groove fits onto the annular protrusion, and an oil seal is provided between the annular groove and the annular protrusion.

[0012] In any of the above technical solutions, the mobile radiation-resistant gimbal camera with strong sealing also includes: a camera rotation mechanism, which is set in the mounting cavity, connects the camera and drives the camera to rotate axially around the connection point with the upper housing; a connecting pipe is provided on the upper housing perpendicular to the length direction, one end of the connecting pipe extends into the mounting cavity, and the other end extends radially away from the upper housing, the camera is rotatably set at the end of the connecting pipe away from the upper housing, a limiting groove is provided in the connecting pipe, and a first camera bearing, a second camera bearing and a camera oil seal are sequentially arranged in the limiting groove along the mounting cavity towards the end of the connecting pipe away from the upper housing.

[0013] In any of the above technical solutions, the camera rotation mechanism further includes: a motor connecting shaft, rotatably disposed within a connecting tube, passing through a first camera bearing, a second camera bearing, and a camera oil seal, one end of which is connected to the camera, and the other end extending into the mounting cavity; a first bevel gear, fitted onto the end of the motor connecting shaft extending into the mounting cavity; a second bevel gear, coaxially disposed with respect to the length direction of the mounting cavity, and meshing with the first bevel gear; a camera motor bracket, disposed within the mounting cavity and connected to the inner surface of the upper housing; and a camera motor, disposed on the camera motor bracket, its output shaft connected to the second bevel gear.

[0014] In any of the above technical solutions, a stop is further provided on the camera motor bracket, which interferes with the camera limiting rod fitted on the output shaft of the camera motor, thereby limiting the rotation angle of the motor relative to the main body shell.

[0015] In any of the above technical solutions, a fill light is further provided on the camera, with its axis horizontal to the camera's axis.

[0016] Beneficial effects: Compared with existing technologies, the gimbal camera achieves long-term stable operation in harsh environments such as strong radiation and high pollution through multiple dynamic sealing and compact transmission structure design; the rotating mechanism and integrated supplementary lighting ensure high-quality image acquisition and monitoring effects. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the main rotating mechanism of this utility model; Figure 3 This is a cross-sectional structural diagram of the main rotating mechanism of this utility model; Figure 4 This is a cross-sectional structural diagram of the camera rotation mechanism of this utility model.

[0019] The annotations in the attached figures are explained as follows: 1. Base; 11. Connecting shaft; 12. Annular protrusion; 13. Oil seal; 2. Main body shell; 21. Upper shell; 211. Connecting pipe; 22. Bottom cover; 221. Annular groove; 3. Camera; 31. Fill light; 4. Main body rotation mechanism; 41. Circumferential bearing; 42. Axial bearing; 43. First main body gear; 44. Second main body gear; 45. Main body rotation motor; 46. Main body limiting rod; 47. Motor base; 5. Camera rotation mechanism; 51. Motor connecting shaft; 52. First bevel gear; 53. Second bevel gear; 54. Camera motor bracket; 541. Stop block; 55. Camera motor; 551. Camera limiting rod; 56. First camera bearing; 57. Second camera bearing; 58. Camera oil seal. Detailed Implementation

[0020] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0022] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] This invention proposes a mobile radiation-resistant gimbal camera with strong sealing properties, which can operate stably for a long time in harsh environments such as strong radiation and high pollution.

[0026] The following embodiments will be used to provide a detailed description of the airtight, mobile radiation-resistant gimbal camera of this application.

[0027] Example 1: like Figure 1 , 2 As shown in Figure 3, this embodiment proposes a mobile radiation-resistant gimbal camera with strong sealing performance, including: a base 1, on which a housing mounting position is provided, and a connecting shaft 11 is provided on the housing mounting position; a main housing 2, rotatably mounted on the housing mounting position, the main housing 2 is divided into an upper housing 21 and a bottom cover 22, the bottom of the upper housing 21 is provided with an opening, the bottom cover 22 covers the bottom opening of the upper housing 21 to form a mounting cavity, and the connecting shaft 11 passes through the bottom cover 22 and extends into the mounting cavity; a camera 3, mounted on the upper housing 21; and a main body rotation mechanism 4, which is provided with... It is placed in the mounting cavity and connected to the base 1 via the connecting shaft 11; wherein, the main body rotation mechanism 4 includes: a circumferential bearing 41, which is sleeved on the connecting shaft 11 and connected to the bottom cover; an axial bearing 42, which is sleeved on the connecting shaft 11 and whose lower end abuts against the upper surface of the bottom cover; a first main body gear 43, which is sleeved on the connecting shaft 11 and whose bottom surface abuts against the upper end of the axial bearing 42; a second main body gear 44, which meshes with the first main body gear 43; and a main body rotation motor 45, which is disposed in the mounting cavity and whose output shaft is sleeved on the second main body gear 44.

[0028] The device uses base 1 as the mounting base. A connecting shaft 11 is installed on the outer casing mounting position of base 1. The main outer casing 2 consists of an upper casing 21 and a bottom cover 22. The bottom cover 22 closes onto the bottom opening of the upper casing 21 to form a mounting cavity. The main outer casing 2 is rotatably mounted on the outer casing mounting position of base 1. The connecting shaft 11 passes through the bottom cover 22 and extends into the mounting cavity. The camera 3 is mounted on the upper casing 21. The main rotating mechanism 4 is installed in the mounting cavity and connected to base 1 via the connecting shaft 11. A circumferential bearing 41 in the main rotating mechanism 4 is fitted onto the connecting shaft 11 and connected to the bottom cover 22. An axial bearing 4... 2 is also fitted onto the connecting shaft 11, with its lower end abutting against the upper surface of the bottom cover 22. The first main gear 43 is fitted onto the connecting shaft 11, with its bottom surface abutting against the upper end of the axial bearing 42. The second main gear 44 meshes with the first main gear 43 and is fitted onto the output shaft of the main rotating motor 45. The main rotating motor 45 is fixed in the mounting cavity. When the main rotating motor 45 runs, it drives the second main gear 44 to rotate, and drives the first main gear 43 to rotate through the gear meshing action, thereby driving the main shell 2 to rotate relative to the base 1. The camera 3 moves synchronously with the main shell 2 and can rotate independently.

[0029] When existing gimbal cameras are used in harsh environments such as nuclear power plants and chemical plants where there is high intensity ionizing radiation, corrosive gases, dust, and high humidity, their sealing performance is insufficient, making it difficult to isolate radiation dust, corrosive gases, and moisture. These substances can easily penetrate into the equipment and cause damage to internal precision mechanisms. At the same time, the motion mechanism in the existing technology does not have enough stability and reliability under strong radiation conditions, and is prone to jamming or poor positioning accuracy, which cannot meet the requirements for long-term stable operation in extreme environments.

[0030] The device features an annular protrusion 12 on the base 1 and an annular groove 221 on the bottom cover 22. The annular groove 221 fits onto the annular protrusion 12, and an oil seal 13 is installed between them. Combined with the tightly sealed design of the housing, a multi-layer sealing structure is formed, which can effectively isolate radiation dust, corrosive gases, and moisture, preventing them from entering the equipment. The main rotating mechanism 4 adopts a structure in which a circumferential bearing 41 and an axial bearing 42 are matched. Power is transmitted by the meshing first main gear 43 and second main gear 44. Driven by the main rotating motor 45, the main housing 2 can rotate smoothly, ensuring the smoothness of the movement process and the accuracy of positioning. At the same time, the overall structure is made of radiation-resistant materials, which can adapt to strong radiation environments, ensure the reliability of long-term operation of the equipment, and meet the needs of use in extreme environments.

[0031] Example 2: This embodiment is a further improvement based on Embodiment 1.

[0032] like Figure 1 , 4 As shown, in this embodiment, A connecting pipe 211 is provided on the upper housing 21 perpendicular to its length direction. One end of the connecting pipe 211 extends into the mounting cavity, and the other end extends radially away from the upper housing 21. The camera 3 is rotatably mounted on the end of the connecting pipe 211 away from the upper housing 21. A limiting groove is provided inside the connecting pipe 211. A first camera bearing 56, a second camera bearing 57, and a camera oil seal 58 are sequentially installed in the limiting groove along the mounting cavity towards the end of the connecting pipe 211 away from the upper housing 21. The camera rotating mechanism 5 is located in the mounting cavity. The motor connecting shaft 51 is rotatably mounted in the connecting pipe 211, passing through the first camera bearing 56, the second camera bearing 57, and the camera oil seal 58 in sequence. One end of the motor connecting shaft 51 is connected to the camera 3, and the other end extends into the mounting cavity. A first bevel gear 52 is fitted onto the end of the motor connecting shaft 51 that extends into the mounting cavity. A second bevel gear 53 is coaxially arranged with the length direction of the mounting cavity and meshes with the first bevel gear 52. The camera motor mount 54 is fixed in the mounting cavity and connected to the inner surface of the upper housing 21. The camera motor 55 is mounted on the camera motor mount 54, and its output shaft is connected to the second bevel gear 53. When the camera motor 55 runs, it drives the second bevel gear 53 to rotate, which in turn drives the first bevel gear 52 to rotate through the meshing action of the bevel gears, thereby driving the motor connecting shaft 51 to rotate, ultimately realizing the axial rotation of the camera 3 around the connection point with the upper housing 21.

[0033] In existing technologies, the pitch motion components of cameras lack reliable dynamic sealing structures, and the gap between the rotating shaft and the housing can easily become a weak point in protection, allowing dust, moisture, and corrosive gases to easily penetrate the interior. Furthermore, some transmission mechanisms are poorly designed and may experience jamming under strong radiation environments, affecting the smoothness of camera rotation and positioning accuracy, thus failing to meet the needs of use in extreme environments.

[0034] The camera rotation mechanism 5, by setting a limiting groove in the connecting pipe 211, sequentially installs the first camera bearing 56, the second camera bearing 57, and the camera oil seal 58, forming a multi-layer sealing structure that effectively prevents dust, moisture, and corrosive gases from entering the interior. The transmission method employing the meshing of the first bevel gear 52 and the second bevel gear 53, combined with the support of the bearings, ensures the smoothness and positioning accuracy of the camera 3's rotation. The compact design of the sealing and transmission structures adapts to the needs of extreme environments, reducing the impact of the external environment on the mechanism's operation.

[0035] Example 3: This embodiment is a further improvement based on any of the above embodiments.

[0036] like Figure 2 , 4 As shown, in this embodiment, In the limiting design of the main body rotation mechanism 4, the main body limiting rod 46 is sleeved on the connecting shaft 11 and extends radially. The motor base 47 is fixed on the bottom cover 22, and the main body rotation motor 45 is mounted on the motor base 47. The motor base 47 and the main body limiting rod 46 interfere with each other, thereby limiting the rotation angle of the main body shell 2 relative to the base 1. In the limiting design of the camera rotation mechanism 5, the stop block 541 is set on the camera motor frame 54, and the camera limiting rod 551 is sleeved on the output shaft of the camera motor 55. The stop block 541 and the camera limiting rod 551 interfere with each other, thereby limiting the rotation angle of the motor relative to the main body shell 2.

[0037] Existing gimbal camera motion mechanisms lack reliable limiting structures, making them prone to over-rotation during horizontal rotation and vertical pitch movements, which may cause internal cables to break. Furthermore, excessive rotation affects the positioning accuracy of the mechanism, reduces the reliability of equipment operation, and fails to meet the requirements for long-term stable operation.

[0038] The main body rotation mechanism 4 limits the rotation angle of the main body shell 2 through the mutual interference of the main body limiting rod 46 and the motor base 47, preventing excessive horizontal rotation. The camera rotation mechanism 5 limits the rotation angle of the camera 3 through the mutual interference of the stop 541 and the camera limiting rod 551, preventing excessive vertical pitch. Both limiting designs effectively prevent internal cables from breaking due to excessive rotation, ensuring the positioning accuracy of the mechanism, improving the reliability of equipment operation, and meeting the requirements for long-term stable operation.

[0039] Example 4: This embodiment is a further improvement based on any of the above embodiments.

[0040] like Figure 1 As shown, in this embodiment, The base 1 of camera 3 is connected to the mobile trolley, ensuring the base 1 is securely mounted on it. As the trolley moves along the slide rail, it moves the base 1 synchronously, causing the main body shell 2 connected to the base 1 and the camera 3 mounted on the upper shell 21 to change position along with the trolley. During the movement of the trolley along the slide rail, the main body rotation mechanism 4 drives the main body shell 2 to rotate relative to the base 1, and the camera rotation mechanism 5 drives the camera 3 to rotate axially around the connection point with the upper shell 21. The fill light 31 on the camera 3 also moves synchronously with the camera 3, thus enabling the camera 3 to monitor and image areas at different positions and angles during its movement.

[0041] Current pan-tilt cameras, relying solely on their own rotation mechanism, can only adjust their angle at a fixed position, limiting their monitoring range to a fixed area. This makes them unable to provide full coverage of harsh environments in large spaces such as nuclear power plants and chemical plants. On the other hand, if the camera is moved by a mobile device, it lacks flexible angle adjustment capabilities, easily creating blind spots during movement and making it difficult to accurately track and photograph specific targets, thus failing to meet the monitoring needs in complex environments.

[0042] By mounting the camera 3 base 1 onto a mobile trolley that moves along a slide rail, the movement of the trolley drives the camera 3 to change its spatial position, breaking the limitation that the camera 3 can only monitor from a fixed position and expanding the monitoring range. At the same time, the camera 3's own main body rotation mechanism 4 enables the horizontal rotation of the main body shell 2, and the camera rotation mechanism 5 enables the axial rotation of the camera 3. This allows the camera 3 to flexibly adjust the monitoring angle during its movement along the slide rail, covering a larger spatial area and accurately tracking and photographing specific targets, eliminating blind spots and meeting the monitoring needs of large, harsh environments such as nuclear power plants and chemical plants.

[0043] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A mobile, radiation-resistant gimbal camera with strong sealing properties, characterized in that, include: A base (1) is provided with a housing mounting position, and a connecting shaft (11) is provided on the housing mounting position; The main body shell (2) is rotatably mounted on the shell mounting position. The main body shell (2) is divided into an upper shell (21) and a bottom cover (22). The bottom of the upper shell (21) is provided with an opening. The bottom cover (22) covers the bottom opening of the upper shell (21) to form a mounting cavity. The connecting shaft (11) passes through the bottom cover (22) and extends into the mounting cavity. A camera (3) is mounted on the upper housing (21); The main rotating mechanism (4) is located in the mounting cavity and is connected to the base (1) via the connecting shaft (11). The main rotating mechanism (4) includes a circumferential bearing (41), which is fitted onto the connecting shaft (11) and connected to the bottom cover (22). An axial bearing (42) is fitted onto the connecting shaft (11), and its lower end abuts against the upper surface of the bottom cover; The first main gear (43) is fitted onto the connecting shaft (11), and its bottom surface abuts against the upper end of the axial bearing (42); The second main gear (44) meshes with the first main gear (43); The main rotating motor (45) is located in the mounting cavity, and the second main gear (44) is fitted onto its output shaft.

2. The mobile radiation-resistant gimbal camera with strong sealing performance according to claim 1, characterized in that, The main rotating mechanism (4) also includes: The main limiting rod (46) is fitted onto the connecting shaft (11) and extends radially; and a motor base (47), fixed on the bottom cover (22), on which the main body rotating motor (45) is mounted; The motor mount (47) interferes with the main body limiting rod (46) to limit the rotation angle of the main body shell (2) relative to the base (1).

3. The mobile radiation-resistant gimbal camera with strong sealing performance according to claim 1, characterized in that, The base (1) is also provided with an annular protrusion (12), and the bottom cover (22) is provided with an annular groove (221). The annular groove (221) fits onto the annular protrusion (12), and an oil seal (13) is provided between the annular groove (221) and the annular protrusion (12).

4. The mobile radiation-resistant gimbal camera with strong sealing performance according to claim 1, characterized in that, The highly sealed mobile radiation-resistant gimbal camera further includes: a camera rotation mechanism (5), which is disposed in the mounting cavity, connects to the camera (3) and drives the camera (3) to rotate axially around the connection point with the upper housing (21); a connecting pipe (211) is disposed on the upper housing (21) perpendicular to the length direction, one end of the connecting pipe (211) extends into the mounting cavity, and the other end extends radially away from the upper housing (21), the camera (3) is rotatably disposed at the end of the connecting pipe (211) away from the upper housing (21), a limiting groove is disposed in the connecting pipe (211), and a first camera bearing (56), a second camera bearing (57) and a camera oil seal (58) are sequentially disposed in the limiting groove along the mounting cavity towards the end of the connecting pipe (211) away from the upper housing (21).

5. The mobile radiation-resistant gimbal camera with strong sealing performance according to claim 4, characterized in that, The camera rotation mechanism (5) includes: The motor connecting shaft (51) is rotatably disposed in the connecting tube (211), passes through the first camera bearing (56), the second camera bearing (57) and the camera oil seal (58), one end of which is connected to the camera (3), and the other end extends into the mounting cavity; The first bevel gear (52) is fitted onto one end of the motor connecting shaft (51) that extends into the mounting cavity; The second bevel gear (53) is coaxially arranged with the length direction of the mounting cavity and meshes with the first bevel gear (52); A camera motor mount (54) is disposed in the mounting cavity and connected to the inner surface of the upper housing (21); And a camera motor (55), which is mounted on the camera motor mount (54), and whose output shaft is connected to the second bevel gear (53).

6. The mobile radiation-resistant gimbal camera with strong sealing performance according to claim 5, characterized in that, The camera motor mount (54) is also provided with a stop (541), which interferes with the camera limiting rod (551) fitted on the output shaft of the camera motor (55) to limit the rotation angle of the motor relative to the main body shell (2).

7. The mobile radiation-resistant gimbal camera with strong sealing performance according to claim 1, characterized in that, The camera (3) is also equipped with a fill light (31), the axis of which is horizontal with the axis of the camera (3).

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