High-temperature industrial television camera probe micro-motion calibration device

Abstract

The utility model discloses a high-temperature industrial television camera probe micro-motion calibration device, and particularly relates to the technical field of industrial television camera probe calibration, which comprises a transparent protective sleeve and a camera probe body mounted in the transparent protective sleeve, and an inner rod positioned on one side of the camera probe body is arranged in the transparent protective sleeve. A positioning disc is arranged outside the inner rod, an end cover is arranged on one side of the positioning disc, a spring is arranged outside the inner rod and located between the positioning disc and the end cover in a sleeving mode, an adjusting nut is arranged on the side, located on the end cover, outside the inner rod, and a locking nut is arranged on one side of the adjusting nut. According to the utility model, front-back movement and left-right rotation fine adjustment operation can be carried out on the camera probe, and in the fine adjustment calibration process, an operator can conveniently and visually check the front-back movement distance and the left-right rotation adjustment angle of the camera probe, so that the calibration accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of camera probe calibration, and more specifically to a micro-motion calibration device for a high-temperature industrial television camera probe. Background Art

[0002] With the continuous development of industrial automation technology, industrial television camera systems are widely used to monitor and control production processes, especially in high-temperature environments, such as steel manufacturing, glass processing, ceramic firing and other industries, to capture images in high-temperature environments.

[0003] At present, the in-furnace video probe is usually composed of a camera, a lens, a bracket (core) and a protective cover. The camera and the lens are installed on the bracket to form a core, and the core is inserted into the protective cover. The front end of the lens is aligned with the observation hole on the front cover of the protective cover. The rear cover is connected to the core as a whole and fixed on the rear flange of the protective cover to form a camera probe. The camera probe is then sent into the high-temperature furnace, and the collected video signal is transmitted to the monitor, so that the operator can control the furnace condition of the high-temperature furnace in the control room.

[0004] In order to ensure that the camera can accurately transmit the image to the monitor, it is necessary to calibrate the relative position between the camera lens and the protective cover to ensure that the camera lens is in the same straight line with the center point of the object, and the distance between the front edge of the imaging hole at the front end of the lens and the observation hole in the protective cover shall not exceed the specified range. At the same time, the camera remains centered in the cylindrical inner wall and cannot be deflected, so the core of the sleeve must be slightly adjusted in the protective cover to perform left-hand rotation, right-hand rotation in the circumferential direction, and forward and backward movement in the axial direction.

[0005] After searching, a Chinese patent with publication number CN201886261U discloses a micro-motion calibration device for a high-temperature industrial television camera probe. This structure enables the relative position of the camera and the protective cover to be adjusted and aligned arbitrarily, and the internal adjustment and alignment of the camera probe is only completed at the rear end of the outside of the protective cover without disassembly. It uses pure mechanical principles and methods without the need for other energy, and can be achieved by simply turning a wrench clockwise or counterclockwise.

[0006] However, this structure has the following disadvantages in actual use:

[0007] 1. This structure allows the camera lens to move forward and backward only by rotating the outer nut forward and backward and based on the elastic potential energy of the compression spring, but it is difficult for the operator to control the distance the camera lens moves forward and backward inside the protective cover;

[0008] 2. Similarly, this structure drives the lens to rotate left and right inside the protective cover by rotating the inner rod, and it is difficult for the operator to grasp the rotation angle of the lens inside the protective cover.

[0009] In summary, the above adjustment makes it difficult for the operator to grasp the distance of the lens fine-tuning in the protective cover, as well as the angle of left and right rotation, resulting in low calibration accuracy or the need for multiple fine-tuning operations to obtain satisfactory image acquisition of the camera lens. In view of this, the utility model proposes a high-temperature industrial television camera probe micro-calibration device Utility Model Content

[0010] In order to overcome the above-mentioned defects of the prior art, the utility model provides a high-temperature industrial television camera probe micro-motion calibration device to solve the problems raised in the above-mentioned background technology.

[0011] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature industrial television camera probe micro-motion calibration device, comprising a transparent protective cover and a camera probe body installed in the transparent protective cover, one end of the transparent protective cover is provided with a through hole for the camera probe body to take pictures, the camera probe body is detachably installed at one end of an inner rod, and the camera end of the camera probe body is located at the through hole opened by the transparent protective cover, the interior of the transparent protective cover is located at an inner rod on one side of the camera probe body, the outside of the inner rod is provided with a positioning plate, one side of the positioning plate is provided with an end cover, one end of the transparent protective cover and located at the positioning plate is provided with a connecting plate, the positioning plate and the connecting plate are detachably connected by bolts, the outside of the inner rod is provided with a spring between the positioning plate and the end cover, the outside of the inner rod is provided with an adjusting nut on one side of the end cover, and one side of the adjusting nut is provided with a locking nut.

[0012] It can be seen that by adjusting the nut to rotate outside the inner rod, the camera probe body can be moved back and forth inside the transparent protective cover, so that the distance between the front edge of the imaging hole at the front end of the camera probe body and the observation hole of the transparent protective cover can be calibrated, and the rotation of the inner rod can adjust the left and right rotation positions of the camera probe body inside the transparent protective cover, thereby achieving micro-motion calibration of the camera probe body.

[0013] In order to facilitate the operator to intuitively check the distance moved by the camera probe body inside the transparent protective cover and improve the accuracy, preferably, a mobile ranging structure is provided on the outside of the camera probe body, and the mobile ranging structure includes a moving disk, and the moving disk is fixedly mounted on the outside of one end of the camera probe body, and a ranging mark is engraved on the outer surface of the transparent protective cover, and the moving disk is slidably connected to the inside of the transparent protective cover, and the outer wall of the moving disk is in contact with the inner wall of the transparent protective cover.

[0014] In order to facilitate the operator to check the left-hand and right-hand angles of the camera probe body inside the transparent protective cover and improve the adjustment accuracy, preferably, the rotating angle measuring structure includes an adjusting disk, which is fixedly mounted on one end of the inner rod, and an angle measuring disk is rotatably arranged on the outside of the inner rod on one side of the adjusting disk, and the outer wall of the angle measuring disk is provided with angle marks distributed in a ring shape, and an indicator mark is installed on the adjusting disk by means of screws, and a T-shaped circular groove is provided on one side of the angle measuring disk that is in contact with the adjusting disk, and two T-shaped sliders are slidingly arranged inside the T-shaped circular groove, and the two T-shaped sliders are fixedly mounted on the inner wall of the adjusting disk.

[0015] Technical effects and advantages of the utility model:

[0016] 1. By setting a mobile distance measuring structure, the adjusting nut rotates outside the inner rod, and in the process of moving the camera probe body back and forth inside the transparent protective cover, the mobile disk outside the camera probe body can be moved in contact with the inner wall of the transparent protective cover. Since the transparent protective cover is transparent and the outer wall of the transparent protective cover is engraved with a distance measuring mark, when the mobile disk moves inside the transparent protective cover, according to the distance measuring mark outside the transparent protective cover, the distance moved by the camera probe body inside the transparent protective cover can be more clearly seen, which is convenient for the operator to control the distance;

[0017] 2. By setting up a rotating angle measuring structure, the rotation of the adjusting disk enables the inner rod to drive the camera probe body to rotate left and right inside the transparent protective cover, which can drive the indicator mark to rotate on the angle mark of the angle measuring disk, so that the left and right angles of the camera elastic body inside the transparent protective cover can be intuitively checked, further improving the accuracy of fine-tuning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 The utility model is a schematic diagram of the connection structure between the camera probe body and the transparent protective cover.

[0020] Figure 3 It is a schematic diagram of the connection structure between the end cover and the inner rod of the utility model.

[0021] Figure 4 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0022] Figure 5 It is a schematic diagram of the connection structure between the adjustment disk and the angle measuring disk of the utility model.

[0023] The accompanying drawings are marked as follows: 1. transparent protective cover; 2. camera probe body; 3. inner rod; 4. positioning plate; 5. end cover; 6. spring; 7. adjusting nut; 8. locking nut; 9. moving plate; 10. distance measuring mark; 11. adjusting plate; 12. angle measuring plate; 13. angle mark; 14. indicator mark; 15. T-shaped circular groove; 16. T-shaped slider; 17. connecting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] As attached Figure 1-5 A high-temperature industrial television camera probe micro-motion calibration device shown in the figure comprises a transparent protective cover 1 and a camera probe body 2 installed in the transparent protective cover 1, a through hole for the camera probe body 2 to take pictures is opened at one end of the transparent protective cover 1, the camera probe body 2 is detachably installed at one end of an inner rod 3, and the shooting end of the camera probe body 2 is located at the through hole opened by the transparent protective cover 1, the interior of the transparent protective cover 1 is located at the inner rod 3 on one side of the camera probe body 2, a positioning plate 4 is arranged on the outside of the inner rod 3, an end cover 5 is arranged on one side of the positioning plate 4, a connecting plate 17 is arranged at one end of the transparent protective cover 1 and located at the positioning plate 4, the positioning plate 4 and the connecting plate 17 are detachably connected by bolts, a spring 6 is sleeved on the outside of the inner rod 3 between the positioning plate 4 and the end cover 5, an adjusting nut 7 is arranged on the outside of the inner rod 3 on one side of the end cover 5, and a locking nut 8 is arranged on one side of the adjusting nut 7.

[0026] Specifically, in this structure, the positioning disk 4 can be threadedly installed on the external thread of the inner rod 3 through the threaded through hole in the center thereof, the spring 6 is sleeved on the outside of the inner rod 3, and one end of the spring 6 is located at the positioning disk 4, and the end cover 5 is installed on the outside of the inner rod 3. At this time, the spring 6 is outside the inner rod 3 and between the positioning disk 4 and the end cover 5, and is connected to the connecting disk 17 by bolts, and the adjusting nut 7 and the locking nut 8 are threadedly installed on the outside of the inner rod 3 in sequence, and one end of the camera probe body 2 is sleeved at one end of the inner rod 3 through a sleeve core, and is connected by screws, and the camera position of the camera probe body 2 is located at the through hole opened by the transparent protective cover 1;

[0027] Furthermore, when the structure is used, the operator can loosen the locking nut 8 and rotate the adjusting nut 7 on the outside of the inner rod 3. According to the spring 6 located outside the inner rod 3 and between the positioning plate 4 and the end cover 5, the camera probe body 2 can be moved back and forth inside the transparent protective cover 1, so that the distance between the front edge of the imaging hole at the front end of the camera probe body 2 and the observation hole of the transparent protective cover 1 can be calibrated so that the distance is within the specified range.

[0028] At the same time, the operator adjusts the position of the camera probe body 2 in the transparent protective cover 1 by rotating the inner rod 3 to the left and right. After the adjustment of the camera probe body 2 is completed, the locking nut 8 can be locked.

[0029] The camera probe body 2 collects monitoring images through the through hole of the transparent protective cover 1.

[0030] In a specific embodiment, as shown in the attached Figure 1 , 2 As shown, a mobile ranging structure is provided on the outside of the camera probe body 2, and the mobile ranging structure includes a moving disk 9, which is fixedly sleeved on the outside of one end of the camera probe body 2, and a ranging mark 10 is engraved on the outer surface of the transparent protective cover 1. The moving disk 9 is slidably connected to the inside of the transparent protective cover 1, and the outer wall of the moving disk 9 is in contact with the inner wall of the transparent protective cover 1.

[0031] Specifically, in this structure, in order to facilitate the operator to intuitively check the distance that the camera probe body 2 moves inside the transparent protective cover 1, by adjusting the nut 7 to rotate outside the inner rod 3, and according to the spring 6 outside the inner rod 3 and located between the positioning plate 4 and the end cover 5, when the camera probe body 2 moves back and forth inside the transparent protective cover 1, the moving plate 9 outside the camera probe body 2 can be moved in contact with the inner wall of the transparent protective cover 1;

[0032] Since the transparent protective cover 1 is transparent and the outer wall of the transparent protective cover 1 is engraved with a distance measuring mark 10, when the movable disk 9 moves inside the transparent protective cover 1, according to the distance measuring mark 10 outside the transparent protective cover 1, the distance moved by the camera probe body 2 inside the transparent protective cover 1 can be seen more clearly, thereby avoiding the poor calibration accuracy caused by the camera probe body 2 moving too much inside the transparent protective cover 1 due to the elastic effect of the spring 6 when the adjusting nut 7 is turned.

[0033] In a specific embodiment, as shown in the attached Figure 3 , 4As shown in Figures 5 and 6, the rotary angle measuring structure includes an adjusting disk 11, which is fixedly mounted on one end of the inner rod 3. An angle measuring disk 12 is rotatably arranged on the outside of the inner rod 3 and located on one side of the adjusting disk 11. An angle mark 13 is distributed in a ring shape on the outer wall of the angle measuring disk 12. An indicator mark 14 is installed on the adjusting disk 11 by screws. A T-shaped circular groove 15 is provided on one side where the angle measuring disk 12 and the adjusting disk 11 are in contact with each other. Two T-shaped sliders 16 are slidably arranged inside the T-shaped circular groove 15. The two T-shaped sliders 16 are fixedly mounted on the inner wall of the adjusting disk 11.

[0034] Specifically, in this structure, in order to facilitate the operator to check the left-hand and right-hand angles of the camera probe body 2 inside the transparent protective cover 1 and improve the adjustment accuracy, the operator rotates the adjustment disk 11 and pinches the angle measuring disk 12. The rotation of the adjustment disk 11 can drive the inner rod 3 to rotate inside the transparent protective cover 1, thereby realizing the left-hand and right-hand angles of the camera probe body 2. During the rotation of the adjustment disk 11, the indicator mark 14 can be driven to rotate on the angle mark 13 belonging to the angle measuring disk 12, so that the left-hand and right-hand angles of the camera elastic body inside the transparent protective cover 1 can be intuitively checked.

[0035] Specifically, the angle measuring disk 12 is a circular structure with an overall angle of 360 degrees, and a plurality of angle marks 13 are distributed on the angle measuring disk 12, and the angle between each two adjacent angle marks 13 is 5 degrees, so that each time the adjustment disk 11 is rotated and the indicator mark 14 is driven to rotate on the angle mark 13 of the angle measuring disk 12, the rotation angle of the camera probe body 2 inside the transparent protective cover 1 can be controlled;

[0036] When the adjusting disk 11 is rotated, the T-shaped slider 16 can be rotated inside the T-shaped circular groove 15 , which not only realizes the connection between the adjusting disk 11 and the angle measuring disk 12 , but also ensures the stability of the rotation of the adjusting disk 11 .

[0037] Working principle of this utility model:

[0038] When the above structure is used, the operator first loosens the locking nut 8 and rotates the adjusting nut 7 on the outside of the inner rod 3. According to the spring 6 located outside the inner rod 3 and between the positioning plate 4 and the end cover 5, the camera probe body 2 can be moved back and forth inside the transparent protective cover 1, so that the distance between the front edge of the imaging hole at the front end of the camera probe body 2 and the observation hole of the transparent protective cover 1 can be calibrated so that the distance is within the specified range.

[0039] Since the transparent protective cover 1 is transparent and the outer wall of the transparent protective cover 1 is engraved with a distance measuring mark 10, when the movable plate 9 moves inside the transparent protective cover 1, according to the distance measuring mark 10 outside the transparent protective cover 1, the distance moved by the camera probe body 2 inside the transparent protective cover 1 can be more clearly seen, thereby avoiding the camera probe body 2 moving too much inside the transparent protective cover 1 due to the elastic effect of the spring 6 when the adjusting nut 7 is turned, resulting in poor calibration accuracy;

[0040] At the same time, the operator rotates the adjustment disk 11 and pinches the angle measuring disk 12. The rotation of the adjustment disk 11 can drive the inner rod 3 to rotate inside the transparent protective cover 1, thereby realizing the left-hand and right-hand angles of the camera probe body 2. During the rotation of the adjustment disk 11, the indicator mark 14 can be driven to rotate on the angle mark 13 of the angle measuring disk 12, so that the left-hand and right-hand angles of the camera elastic body inside the transparent protective cover 1 can be intuitively checked.

[0041] Finally, after the adjustment of the camera probe body 2 is completed, the locking nut 8 can be locked, and the camera probe body 2 collects the monitoring image through the through hole of the transparent protective cover 1.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-temperature industrial television camera probe micro-motion calibration device, comprising a transparent protective cover (1) and a camera probe body (2) installed in the transparent protective cover (1), characterized in that: The interior of the transparent protective cover (1) is located at an inner rod (3) on one side of the camera probe body (2); a positioning plate (4) is provided on the exterior of the inner rod (3); an end cover (5) is provided on one side of the positioning plate (4); a spring (6) is sleeved between the positioning plate (4) and the end cover (5) on the exterior of the inner rod (3); an adjusting nut (7) is provided on the exterior of the inner rod (3) on one side of the end cover (5); and a locking nut (8) is provided on one side of the adjusting nut (7); A mobile distance measuring structure is arranged outside the camera probe body (2); One end of the inner rod (3) is provided with a rotating angle measuring structure.

2. The high temperature industrial television camera probe micro-calibration device according to claim 1 is characterized in that: The mobile distance measuring structure comprises a mobile disk (9), wherein the mobile disk (9) is fixedly sleeved on the outside of one end of the camera probe body (2), and a distance measuring mark (10) is engraved on the outer surface of the transparent protective sleeve (1).

3. The high temperature industrial television camera probe micro-calibration device according to claim 2 is characterized in that: The movable plate (9) is slidably connected inside the transparent protective cover (1), and the outer wall of the movable plate (9) is in contact with the inner wall of the transparent protective cover (1).

4. The high temperature industrial television camera probe micro-calibration device according to claim 1 is characterized in that: The rotary angle measuring structure comprises an adjusting disk (11), wherein the adjusting disk (11) is fixedly mounted on one end of an inner rod (3), an angle measuring disk (12) is rotatably arranged outside the inner rod (3) and located on one side of the adjusting disk (11), angle marks (13) are distributed in a ring shape on the outer wall of the angle measuring disk (12), and an indicator mark (14) is mounted on the adjusting disk (11) by means of screws.

5. The high temperature industrial television camera probe micro-calibration device according to claim 4 is characterized in that: A T-shaped circular groove (15) is provided on the side where the angle measuring disk (12) and the adjusting disk (11) are in contact with each other. Two T-shaped sliding blocks (16) are slidably provided inside the T-shaped circular groove (15). The two T-shaped sliding blocks (16) are fixedly mounted on the inner wall of the adjusting disk (11).

6. The high temperature industrial television camera probe micro-calibration device according to claim 1 is characterized in that: One end of the transparent protective cover (1) is provided with a through hole for the camera probe body (2) to perform video recording. The camera probe body (2) is detachably mounted on one end of the inner rod (3), and the video recording end of the camera probe body (2) is located at the through hole provided in the transparent protective cover (1).

7. The high temperature industrial television camera probe micro-motion calibration device according to claim 1 is characterized in that: A connecting plate (17) is provided at one end of the transparent protective cover (1) and located at the positioning plate (4); the positioning plate (4) and the connecting plate (17) are detachably connected via bolts.

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