An adaptive radiation-resistant movement device

Abstract

The present application discloses an adaptive radiation-resistant movement device, including an outer bracket shell, a lens module, a shielding shell, an imaging board and an optical shielding assembly, wherein the shielding shell and the lens module are respectively installed at both ends of the outer bracket shell, a control board is installed in the shielding shell, and the imaging board is installed on the inner side wall of the outer bracket shell, and the optical shielding assembly includes a shielding bracket, a first optical shielding body and a second optical shielding body, the shielding bracket is installed on the inner side wall of the outer bracket shell, the first optical shielding body and the second optical shielding body are slidably connected to the shielding bracket, and a driving member for driving the first optical shielding body and the second optical shielding body to move is installed on the shielding bracket. During the camera installation process and the recovery process, the first optical shielding body and the second optical shielding body on the shielding bracket can block the light path in front of the imaging board, thereby effectively reducing the damage of the gamma rays emitted by the observed object to the imaging board.

Description

Technical Field

[0001] The present application relates to the field of radiation-resistant cameras, and more particularly to an adaptive radiation-resistant movement device. Background Art

[0002] With the continuous development of the nuclear industry and the trend of carbon neutrality, nuclear power has entered a golden era of development. With the development of nuclear power, related safety detection also needs to be improved. Since the impact of nuclear radiation will have a great impact on the human body, the camera as the main observation equipment also needs to improve its radiation resistance performance. Ordinary security cameras cannot be used normally under the influence of gamma rays and may be damaged when turned on. How to improve the radiation resistance of the camera is the biggest difficulty.

[0003] Radiation-resistant cameras are very expensive and are very easy to be damaged in irradiated environments. The main structures of cameras are generally the outer shell, the internal circuit board and the movement. The internal circuit board and the movement are the core components of the camera's internal function control, which can be easily damaged by gamma rays, causing the camera to be unable to be used normally. Radiation-resistant cameras generally shield the camera circuit board and the circuit board inside the movement, but the imaging board (sensor board) cannot be shielded because it needs to receive light to make the camera image. Nuclear power observation objects such as fuel rods have extremely high gamma ray radiation. The installation and recovery process of the camera can only be carried out remotely with the help of mechanical devices, which takes a long time. As a result, the camera is not actually used during this period but is always under radiation. In particular, the electronic circuit boards and components have no protection, which will greatly reduce the service life, so it needs to be improved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present application provides an adaptive radiation-resistant movement device, aiming to solve the above problems.

[0005] An adaptive radiation-resistant movement device comprises an outer bracket shell, a lens module, a shielding shell, an imaging board and an optical shielding assembly, wherein the shielding shell and the lens module are respectively mounted at two ends of the outer bracket shell, a control board is mounted in the shielding shell, the imaging board is mounted on the inner side wall of the outer bracket shell, the optical shielding assembly comprises a shielding bracket, a first optical shielding body and a second optical shielding body, the shielding bracket is mounted on the inner side wall of the outer bracket shell, the first optical shielding body and the second optical shielding body are slidably connected to the shielding bracket, and a driving member for driving the first optical shielding body and the second optical shielding body to move is mounted on the shielding bracket.

[0006] By adopting the above technical solution, during the installation and recovery process of the camera, the first optical shielding body and the second optical shielding body on the shielding bracket can block the light path in front of the imaging plate, thereby effectively reducing the damage to the imaging plate by the gamma rays emitted by the observed object; when observation is required, it is only necessary to move the first optical shielding body and the second optical shielding body through the driving member to allow light to enter and perform normal camera functions.

[0007] Optionally, the driving member includes a first driving motor, a second driving motor, a first driving rack, a second driving rack, a first driving gear and a second driving gear. The first driving motor and the second driving motor are installed on the shielding bracket. The first driving gear is fixedly sleeved on the output shaft of the first driving motor, and the second driving gear is fixedly sleeved on the output shaft of the second driving motor. The first driving rack is fixedly connected to the outer wall of the first optical shielding body, and the second driving rack is fixedly connected to the outer wall of the second optical shielding body. The shielding bracket is provided with sliding holes along the sliding direction of the first optical shielding body and the second optical shielding body for the first driving rack and the second driving rack to be inserted and slide. The first driving gear is meshed with the first driving rack, and the second driving gear is meshed with the second driving rack.

[0008] By adopting the above technical solution, the first drive motor drives the first drive gear to rotate, and the first drive gear drives the first optical shielding body to move through the first drive rack; similarly, the second drive motor drives the second drive gear to rotate, and the second drive gear drives the second optical shielding body to move through the second drive rack.

[0009] Optionally, both the first drive motor and the second drive motor are servo motors capable of forward and reverse rotation.

[0010] Optionally, a first limit block is connected to the side wall of the first driving rack, a second limit block is connected to the side wall of the second driving rack, and the outer side wall of the shielding bracket is connected to positioning blocks at both ends of the sliding hole.

[0011] By adopting the above technical solution, when the first optical shielding body moves in a direction away from the imaging plate, the first limit block and the positioning block on the shielding bracket interfere with each other, thereby limiting the first optical shielding body from continuing to move, so as to prevent the first optical shielding body from falling off the shielding bracket; similarly, when the second limit block interferes with the positioning block, the second optical shielding body is limited from continuing to move, so as to prevent the second optical shielding body from falling off the screen wall bracket.

[0012] Optionally, a limiting column is connected between two opposing inner side walls of the sliding hole.

[0013] By adopting the above technical solution, when the first optical shielding body and the second optical shielding body are closed, the first driving rack and the second driving rack collide with the limiting column, thereby avoiding the first optical shielding body and the second optical shielding body from colliding with each other as much as possible.

[0014] Optionally, an extension portion is connected to one end of the first optical shielding body close to the second optical shielding body, and a connecting groove for inserting the extension portion is correspondingly opened on the second optical shielding body, the outer wall of the extension portion and the inner wall of the connecting groove are in contact with each other, and the outer wall of the extension portion and the inner wall of the connecting groove are both connected to mirror optical components.

[0015] Optionally, the extension portion is triangular or trapezoidal.

[0016] Optionally, the first optical shielding body and the second optical shielding body are both connected to a plurality of guide posts, and the shielding bracket is correspondingly provided with a plurality of guide grooves that are slidably matched with the guide posts.

[0017] Optionally, the mirror optical component is optical glass capable of reflecting images or stainless steel with a mirror surface of 8K or above.

[0018] Optionally, the first optical shielding body and the second optical shielding body are both made of tungsten-nickel alloy material.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. During the installation and recovery of the camera, the first optical shielding body and the second optical shielding body on the shielding bracket can block the light path in front of the imaging plate, thereby effectively reducing the damage of the gamma rays emitted by the observed object to the imaging plate; when observation is required, it is only necessary to move the first optical shielding body and the second optical shielding body through the driving member to allow light to enter and perform normal camera functions.

[0021] 2. The first drive motor drives the first drive gear to rotate, and the first drive gear drives the first optical shielding body to move through the first drive rack; similarly, the second drive motor drives the second drive gear to rotate, and the second drive gear drives the second optical shielding body to move through the second drive rack.

[0022] 3. When the first optical shielding body moves in a direction away from the imaging plate, the first limit block and the positioning block on the shielding bracket conflict with each other, thereby limiting the first optical shielding body from continuing to move, so as to prevent the first optical shielding body from escaping from the shielding bracket; similarly, when the second limit block conflicts with the positioning block, the second optical shielding body is limited from continuing to move, so as to prevent the second optical shielding body from escaping from the screen wall bracket.

[0023] 4. When the first optical shielding body and the second optical shielding body are closed, the first driving rack and the second driving rack collide with the limiting column, thereby avoiding the first optical shielding body and the second optical shielding body from colliding with each other as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0025] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the present application.

[0026] Figure 3 It is a schematic diagram of the structure of the shielding bracket in the embodiment of the present application.

[0027] Figure 4 It is a schematic structural diagram of the first optical shielding body in the embodiment of the present application.

[0028] Figure 5 It is a schematic structural diagram of the second optical shielding body in the embodiment of the present application.

[0029] Figure 6 It is a schematic diagram of the state during close-range observation in an embodiment of the present application.

[0030] Figure 7 It is a schematic diagram of the state during long-distance observation in an embodiment of the present application.

[0031] Description of reference numerals:

[0032] 1. Outer bracket shell; 2. Lens module; 3. Shielding shell; 31. Control board; 4. Imaging board; 5. Shielding bracket; 51. First drive motor; 511. First drive gear; 52. Second drive motor; 521. Second drive gear; 53. Sliding hole; 531. Limiting column; 54. Positioning block; 6. First optical shielding body; 61. First drive rack; 611. First limiting block; 7. Second optical shielding body; 71. Second drive rack; 711. Second limiting block; 72. Connecting groove; 8. Extension part; 9. Mirror optical part; 10. Guide column. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0035] The present application embodiment discloses an adaptive radiation-resistant movement device. Figure 1 and Figure 2 , including an outer bracket housing 1, a lens module 2, a shielding housing 3, an imaging board 4 and an optical shielding assembly. The shielding housing 3 and the lens module 2 are detachably connected to both ends of the outer bracket housing 1 by screws.

[0036] Reference Figure 2 and Figure 3 The shielding shell 3 has a chamber inside, and a control board 31 is fixedly installed in the chamber of the shielding shell 3. The control board 31 is a PCB board. A through slot is provided on one side of the outer bracket shell 1 close to the shielding shell 3, and the through slot extends to the inner side wall of the outer bracket shell 1. The imaging board 4 is embedded in the through slot of the outer bracket shell 1.

[0037] Reference Figure 2 and Figure 3 The optical shielding assembly includes a shielding bracket 5, a first optical shielding body 6 and a second optical shielding body 7. The first optical shielding body 6 and the second optical shielding body 7 are made of 95% tungsten-nickel alloy material, which can better shield gamma rays and have the effect of reducing radiation dose. The shielding bracket 5 is fixed to the inner wall of the outer bracket shell 1 by screws, and the first optical shielding body 6 and the second optical shielding body 7 are slidably connected to the shielding bracket 5. A driving member for driving the first optical shielding body 6 and the second optical shielding body 7 to move is installed on the shielding bracket 5. During the installation and recovery of the camera, the first optical shielding body 6 and the second optical shielding body 7 on the shielding bracket 5 can block the light path in front of the imaging plate 4, thereby effectively reducing the damage of the gamma rays emitted by the radiation observation object to the imaging plate 4; when observation is required, it is only necessary to move the first optical shielding body 6 and the second optical shielding body 7 through the driving member to allow light to enter and perform normal camera functions.

[0038] Reference Figure 2 and Figure 3The driving member includes a first driving motor 51, a second driving motor 52, a first driving rack 61, a second driving rack 71, a first driving gear 511 and a second driving gear 521. The first driving motor 51 and the second driving motor 52 are fixedly mounted on the shielding bracket 5 by screws, and the first driving motor 51 and the second driving motor 52 are both servo motors capable of forward and reverse rotation. The first driving gear 511 is fixedly sleeved on the output shaft of the first driving motor 51, and the second driving gear 521 is fixedly sleeved on the output shaft of the second driving motor 52. The first driving rack 61 is fixedly connected to the outer wall of the first optical shielding body 6, and the second driving rack 71 is fixedly connected to the outer wall of the second optical shielding body 7. The shielding bracket 5 is provided with a sliding hole 53 for the first driving rack 61 and the second driving rack 71 to be inserted and slided along the sliding direction of the first optical shielding body 6 and the second optical shielding body 7. The first driving gear 511 is meshed with the first driving rack 61, and the second driving gear 521 is meshed with the second driving rack 71. The first driving motor 51 drives the first driving gear 511 to rotate, and the first driving gear 511 drives the first optical shielding body 6 to move through the first driving rack 61; similarly, the second driving motor 52 drives the second driving gear 521 to rotate, and the second driving gear 521 drives the second optical shielding body 7 to move through the second driving rack 71.

[0039] Reference Figure 3 , Figure 4 and Figure 5 The first optical shielding body 6 and the second optical shielding body 7 are both fixedly connected with four guide posts 10 , and the shielding bracket 5 is correspondingly provided with four guide grooves slidably matched with the guide posts 10 , so that the first optical shielding body 6 and the second optical shielding body 7 can slide on the shielding bracket 5 .

[0040] Reference Figure 3 , Figure 4 and Figure 5 , a first limiting block 611 is fixedly connected to the side wall of the first driving rack 61, a second limiting block 711 is fixedly connected to the side wall of the second driving rack 71, and positioning blocks 54 are fixedly connected to the outer wall of the shielding bracket 5 at both ends of the sliding hole 53. When the first optical shielding body 6 moves in a direction away from the imaging plate 4, the first limiting block 611 and the positioning block 54 on the shielding bracket 5 conflict with each other, thereby limiting the first optical shielding body 6 from continuing to move, so as to prevent the first optical shielding body 6 from falling off from the shielding bracket 5; similarly, when the second limiting block 711 conflicts with the positioning block 54, the second optical shielding body 7 is limited from continuing to move, so as to prevent the second optical shielding body 7 from falling off from the screen wall bracket.

[0041] Reference Figure 3 , Figure 4 and Figure 5A limiting column 531 is fixedly connected between the two inner side walls facing each other in the middle of the sliding hole 53. When the first optical shielding body 6 and the second optical shielding body 7 are closed, the first driving rack 61 and the second driving rack 71 collide with the limiting column 531, thereby avoiding the first optical shielding body 6 and the second optical shielding body 7 from colliding with each other as much as possible.

[0042] Reference Figure 4 and Figure 5 The first optical shielding body 6 is fixedly connected to one end of the second optical shielding body 7, and a connecting groove 72 for the extension part 8 to be inserted is correspondingly provided on the second optical shielding body 7, and the outer wall of the extension part 8 and the inner wall of the connecting groove 72 are mutually attached. The extension part 8 is triangular or trapezoidal, and the oblique outer wall of the extension part 8 and the inner wall of the connecting groove 72 are fixedly connected to a mirror optical component 9, which is an optical glass capable of reflecting imaging or a stainless steel material with a mirror surface of 8K or above.

[0043] Reference Figure 3 , Figure 6 and Figure 7 During the use of the camera, there are mainly three states, namely, the camera installation process, the use process, and the camera recovery process. Since the nuclear power observation object has strong radioactivity and will have a great impact on the human body, the camera installation process and the recovery process are both remote operations and take a long time. During the camera shooting process, the imaging board 4 will directly receive the radiation of the observation object, but the long installation process and recovery process will still be directly exposed to greater radiation. Before observing the object, that is, during the installation process and the recovery process, the control board 31 controls the first drive motor 51 and the second drive motor 52 to block the light path in front of the imaging board 4, and the first optical shielding body 6 and the second optical shielding body 7 can effectively reduce the gamma ray damage emitted by the observation object.

[0044] Reference Figure 3 , Figure 6 and Figure 7 When observation is required, the first optical shielding body 6 and the second optical shielding body 7 are moved by controlling the first driving motor 51 and the second driving motor 52 to allow light to enter so that normal video recording function can be performed. Therefore, during the process of installing and recovering the camera, the optical shielding component can protect the imaging board 4 and greatly improve the service life of the camera.

[0045] Reference Figure 3 , Figure 6 and Figure 7In addition to the radiation protection during the installation and recovery process, the present application also realizes the adaptive switching function between observing the radiation object at a long distance and observing the radiation object at a close distance. When observing the radiation object at a close distance, the radiation dose received by the camera is very high, which can easily cause damage to the imaging plate 4. Therefore, in order to protect the imaging plate 4 when observing the radiation object at a close distance, it is only necessary to control the second drive motor 52 to move the second optical shielding body 7 upward, and the light is imaged by the principle of reflection of the mirror optical body. At this time, since the first optical shielding body 6 has not moved, it can still provide a large range of shielding protection for the imaging plate 4, thereby increasing the service life of the movement and the camera.

[0046] Reference Figure 3 , Figure 6 and Figure 7 When observing radiation objects at a long distance, the radiation dose has been greatly reduced due to the long distance, but the camera clarity needs to be increased at this time. The first optical shielding body 6 is controlled to move downward by the first driving motor 51, and the second optical shielding body 7 is controlled to move upward by the second driving motor 52, so that the entire light path is directly projected onto the imaging plate 4, thereby improving the clarity of the shooting.

[0047] The implementation principle of an adaptive radiation-resistant movement device in the embodiment of the present application is as follows: during the installation and recovery of the camera, the first optical shielding body 6 and the second optical shielding body 7 on the shielding bracket 5 can block the light path in front of the imaging plate 4, thereby effectively reducing the damage of the gamma rays emitted by the observed object to the imaging plate 4; when observation is required, it is only necessary to move the first optical shielding body 6 and the second optical shielding body 7 through the driving member to allow light to enter and perform normal camera functions; in addition to the radiation protection of the camera during the installation and recovery process, the present application also realizes the adaptive switching function of observing radiation objects at a long distance and observing radiation objects at a close distance. When observing radiation objects at a close distance, the radiation dose received by the camera at this time is very high, which can easily cause damage to the imaging plate 4. Therefore, in order to protect the imaging plate 4 when observing radiation objects at a close distance, it is only necessary to control the second driving motor 52 to move the second optical shielding body 7 upwards, and the light is imaged by the principle of reflection of the mirror optical body. At this time, since the first optical shielding body 6 does not move, it can still provide a wide range of shielding protection for the imaging plate 4, thereby increasing the service life of the movement and the camera. When observing radiation objects at a long distance, the radiation dose has been greatly reduced due to the long distance, and the camera clarity needs to be increased. The first optical shielding body 6 is controlled to move downward by the first driving motor 51, and the second optical shielding body 7 is controlled to move upward by the second driving motor 52, so that the entire light path is directly projected onto the imaging plate 4, thereby improving the clarity of the shooting.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adaptive radiation-resistant core device, characterized in that: The invention comprises an outer bracket shell (1), a lens module (2), a shielding shell (3), an imaging board (4) and an optical shielding assembly, wherein the shielding shell (3) and the lens module (2) are respectively mounted on two ends of the outer bracket shell (1), a control board (31) is mounted in the shielding shell (3), the imaging board (4) is mounted on the inner side wall of the outer bracket shell (1), and the optical shielding assembly comprises a shielding bracket (5), a first optical shielding body (6) and a second optical shielding body (7), the shielding bracket (5) is mounted on the inner side wall of the outer bracket shell (1), the first optical shielding body (6) and the second optical shielding body (7) are slidably connected to the shielding bracket (5), and the shielding bracket (5) is mounted on the inner side wall of the outer bracket shell (1). A driving member for driving the first optical shielding body (6) and the second optical shielding body (7) to move is provided, wherein the driving member comprises a first driving motor (51), a second driving motor (52), a first driving rack (61), a second driving rack (71), a first driving gear (511) and a second driving gear (521); the first driving motor (51) and the second driving motor (52) are installed on the shielding bracket (5); the first driving gear (511) is fixedly sleeved on the output shaft of the first driving motor (51); the second driving gear (521) is fixedly sleeved on the output shaft of the second driving motor (52); the first driving rack (61) is fixedly connected to the first optical shielding body (6), the second drive rack (71) is fixedly connected to the outer wall of the second optical shielding body (7), and a sliding hole (53) is provided on the shielding bracket (5) along the sliding direction of the first optical shielding body (6) and the second optical shielding body (7) for the first drive rack (61) and the second drive rack (71) to be clamped and slided, the first drive gear (511) is engaged with the first drive rack (61), and the second drive gear (521) is engaged with the second drive rack (71), the first drive motor (51) and the second drive motor (52) are both servo motors capable of forward and reverse rotation, and a first limit block (611) is connected to the side wall of the first drive rack (61) The second driving rack (71) is connected to a second limiting block (711) on its side wall, the outer wall of the shielding bracket (5) is connected to positioning blocks (54) at both ends of the sliding hole (53), and a limiting column (531) is connected between the two opposing inner walls of the sliding hole (53). The first optical shielding body (6) is connected to an extension portion (8) at one end close to the second optical shielding body (7), and the second optical shielding body (7) is provided with a corresponding connecting groove (72) for the extension portion (8) to be inserted, the outer wall of the extension portion (8) and the inner wall of the connecting groove (72) are in contact with each other, and the outer wall of the extension portion (8) and the inner wall of the connecting groove (72) are both connected to a mirror optical component (9).

2. The adaptive radiation-resistant movement device according to claim 1, characterized in that: The extension portion (8) is triangular or trapezoidal.

3. The adaptive radiation-resistant movement device according to claim 1, characterized in that: The first optical shielding body (6) and the second optical shielding body (7) are both connected to a plurality of guide posts (10), and the shielding bracket (5) is correspondingly provided with a plurality of guide grooves that are slidably matched with the guide posts (10).

4. The adaptive radiation-resistant movement device according to claim 1, characterized in that: The mirror optical component (9) is optical glass capable of reflecting images or stainless steel with a mirror surface of 8K or above.

5. The adaptive radiation-resistant movement device according to claim 1, characterized in that: The first optical shielding body (6) and the second optical shielding body (7) are both made of tungsten-nickel alloy material.

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