View-field-adjustable overlook device

Abstract

The utility model relates to the technical field of observation facilities, and specifically relates to an overlook device with an adjustable visual field range. The device comprises a mounting base, the mounting base is provided with a mounting hole penetrating in the front-back direction, the mounting hole is internally provided with an overlook assembly and a driving mechanism, and the overlook assembly comprises an overlook frame and two guard plate assemblies symmetrically arranged on the left and right sides of the overlook frame. The overlook frame is provided with an overlook hole extending in the front-back direction, and the driving mechanism drives the overlook assembly to move in the mounting hole in the left-right direction. The overlook assembly is driven by the driving mechanism to move in the left-right direction in the mounting hole, the position of the overlook hole relative to the observation area can be changed, and the problems that the visual field range of a traditional fixed overlook device is limited and a blind area exists are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of observation facilities technology, specifically to a viewing device with an adjustable field of view. Background Technology

[0002] High-altitude and cold regions, due to their unique geographical and climatic conditions, have an urgent need for the establishment of specialized observation facilities in many fields, including scientific research, border control, and natural resource monitoring. These regions have extreme environments, with consistently low temperatures, thin air and low oxygen levels, and frequent severe weather events such as strong winds and blizzards, posing stringent challenges to the reliability and functionality of observation facilities and their auxiliary equipment.

[0003] Traditional observation devices installed in such facilities typically employ a fixed opening design and are mounted on top of building shelters. Their structural design is simple and straightforward, with the size and location of the opening primarily determined by initial estimates of the specific observation area and target during construction.

[0004] From a functional perspective, because the size and position of the opening are fixed, and to maintain concealment, the viewing hole cannot be too large, the viewing range available to the user through the device is severely limited, inevitably creating blind spots. This significantly reduces the flexibility of the entire observation facility and consequently lowers its efficiency.

[0005] From a construction and maintenance perspective, traditional fixed observation holes are mostly pre-drilled during the civil engineering construction phase. This design means that if structural modifications to the observation device are needed later due to changes in actual usage requirements—for example, increasing the opening size to expand the observation range or adding new observation holes to eliminate blind spots—the original civil engineering structure must be modified, increasing the facility's labor costs and construction time. Furthermore, construction in high-altitude and cold regions presents numerous challenges. Low temperatures prolong concrete setting time and slow strength development, while high altitudes reduce the power of construction machinery and cause discomfort among construction workers, leading to decreased work efficiency. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a viewing device with an adjustable field of view. The viewing component is moved in the left and right direction in the mounting hole by a drive mechanism, which can change the position of the viewing hole relative to the observation area and effectively overcome the problem of limited field of view and blind spots in traditional fixed viewing devices.

[0007] To address the aforementioned technical problems, the present invention provides a viewing device with an adjustable field of view, comprising a mounting base with a through mounting hole extending in the front-to-back direction. A viewing component and a driving mechanism are disposed within the mounting hole. The viewing component includes a viewing frame and two protective plate assemblies symmetrically arranged on the left and right sides of the viewing frame. The viewing frame has a viewing hole extending in the front-to-back direction. The driving mechanism drives the viewing component to move in the left-to-right direction within the mounting hole.

[0008] Furthermore, the drive mechanism includes a sprocket set and a drive chain. A sprocket set is provided at each of the left and right ends of the mounting hole. The drive chain is wound and meshed on the two sprocket sets. The front end of the viewing component is fixedly connected to the drive chain.

[0009] Furthermore, the sprocket set includes two sprockets arranged vertically at intervals, the two sprockets are connected by a vertical sprocket shaft, the sprockets are rotatably installed in the mounting hole and their rotation axis extends vertically, and a drive chain is wound and meshed on the two sprockets at the upper end and the two sprockets at the lower end of the two sets of sprocket sets respectively.

[0010] Furthermore, the sprocket anti-rotation is mounted on the corresponding vertical sprocket shaft, the vertical sprocket shaft is rotatably mounted in the mounting hole, a first bevel gear is anti-rotation mounted in the middle of the vertical sprocket shaft, a second bevel gear is meshed behind the first bevel gear, and the second bevel gear is driven to rotate by a driving component.

[0011] Furthermore, the driving component includes a driving shaft, the front end of which engages with the second bevel gear to prevent rotation, and the rear end of which is exposed through the mounting hole and provided with a rotating handle.

[0012] Furthermore, two rear inner extension sections are symmetrically arranged on the left and right sides of the rear end of the mounting hole, and the drive shaft is rotatably installed in the rear inner extension sections.

[0013] Furthermore, two bearing seats are symmetrically arranged on the upper and lower sides of the vertical sprocket shaft. The vertical sprocket shaft is rotatably engaged with the bearing seats through a rotating bearing. The end of the bearing seat facing away from the vertical sprocket shaft is fixedly connected to the mounting hole.

[0014] Furthermore, two front inner extensions are symmetrically arranged on the left and right sides of the front end of the mounting hole. The size of the viewing component is adapted to the spacing between the two front inner extensions. The sprocket set is integrally arranged inside the front inner extensions. The opposite sides of the two front inner extensions are provided with external chamfers.

[0015] Furthermore, a first sliding track extending in the left-right direction is provided inside the mounting hole, and the viewing component is slidably mounted on the corresponding first sliding track.

[0016] Furthermore, the protective plate assembly slides in conjunction with the first sliding rail, and the upper and lower sides of the mounting hole are symmetrically provided with second sliding rails extending in opposite directions to the left and right. The upper and lower end faces of the viewing frame slide in conjunction with the second sliding rails on the corresponding sides.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The following are the beneficial effects of each claim:

[0019] (1) The drive mechanism moves the viewing component in the installation hole in the left and right direction, which can change the position of the viewing hole relative to the observation area. This effectively overcomes the problem of limited field of view and blind spots in traditional fixed viewing devices, greatly improving the flexibility and efficiency of the observation facility. Users can adjust the viewing range at any time according to actual needs and obtain more comprehensive observation information.

[0020] (2) The drive mechanism adopts a sprocket set and a drive chain. The sprocket set is set at both ends of the mounting hole, and the drive chain is wound around and meshed on it and connected to the front end of the viewing component. This design can stably transmit power, so that the viewing component remains stable during left and right movement, ensuring that the operation of adjusting the field of view is accurate and reliable, reducing the shaking or jamming of the viewing component caused by unstable drive, and improving the overall performance of the device.

[0021] (3) Two vertically spaced sprockets are connected by a vertical sprocket shaft, and the upper and lower sprockets are respectively wound and meshed with the drive chain. This structural design makes the power transmission more uniform and can effectively avoid problems such as chain slack or detachment caused by uneven force at a single point. It further enhances the stability and reliability of the drive mechanism and ensures that the viewing component can get a stable driving force when it moves in different positions.

[0022] (4) The first bevel gear and the second bevel gear can be used to realize the reversing transmission, which facilitates the installation of the driving components and makes it easy to realize the rotation of the vertical sprocket shaft.

[0023] (5) The rear end of the drive shaft is exposed to the mounting hole, which makes it easy to place the rotating handle behind the mounting hole, making it convenient for the staff behind to operate.

[0024] (6) The rear inner extension section can protect the drive mechanism and the viewing components on the one hand, and facilitate the installation of the drive shaft on the other hand, so that the drive shaft has a stable support point during rotation, reducing the shaking and offset of the shaft, and ensuring the accuracy and stability of power transmission.

[0025] (7) By using two bearing seats, on the one hand, it is convenient to rotate the vertical sprocket shaft into the mounting hole, and on the other hand, the two symmetrical bearing seats can provide stable support for the vertical sprocket shaft, ensuring that the sprocket set can maintain good working condition when rotating at high speed or bearing a large load, thereby improving the operating efficiency and reliability of the drive mechanism.

[0026] (8) The two front inner extensions can be used to protect the drive mechanism, and the outer chamfer can be used to expand the observable range.

[0027] (9) The first sliding track provides additional support points and sliding guides for the viewing component, further enhancing the stability of the viewing component during movement, reducing tilting or swaying caused by gravity or external forces, and ensuring the accuracy and reliability of field of view adjustment.

[0028] (10) By using the rolling wheel in conjunction with the second sliding track, the rolling friction can be used to facilitate the movement of the viewing component, and the load-bearing capacity can be improved. At the same time, the upper and lower rolling wheels can be used to prevent the viewing component from detaching. Attached Figure Description

[0029] Figure 1 This is a front view of the viewing device in Embodiment 1 of this utility model.

[0030] Figure 2 This is a first-direction isometric view of the internal structure of the viewing device in Embodiment 1 of this utility model.

[0031] Figure 3 This is a second-direction isometric view of the internal structure of the viewing device in Embodiment 1 of this utility model.

[0032] Figure 4 This is a schematic diagram of the viewing component and the driving mechanism in Embodiment 1 of this utility model.

[0033] Figure 5 This is a partial structural schematic diagram of the drive mechanism in Embodiment 1 of this utility model.

[0034] In the diagram: 1. Observation frame; 101. Observation hole; 2. Frame plate; 3. Roller; 4. First sliding track; 5. Slide rail groove; 6. Guard plate assembly; 61. First guard plate; 62. Second guard plate; 7. Connector; 8. Drive chain; 9. Sprocket; 10. Vertical sprocket shaft; 11. Bearing seat; 12. Special embedded part; 13. Expansion bolt; 141. First bevel gear; 142. Second bevel gear; 15. Drive shaft; 16. Rotating handle; 17. Support frame; 19. Fixing bolt; 20. Mounting hole; 21. Mounting seat; 22. Front inner extension; 23. Drive mechanism; 24. Sprocket set; 25. Mounting block; 26. Observation assembly; 27. Rear inner extension. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings: Specific Implementation Example 1:

[0037] In this embodiment, as Figure 2 As shown, the length direction of the mounting base 21 is the left-right direction, the width direction of the mounting base 21 is the front-back direction, and the front inner extension 22 is located in front of the rear inner extension 27.

[0038] refer to Figures 1 to 5 The present invention discloses an adjustable field of view viewing device (hereinafter referred to as viewing device), comprising a mounting base 21, wherein the mounting base 21 has a mounting hole 20 extending in the front-to-back direction, and a viewing component 26 and a drive mechanism 23 are installed in the mounting hole 20. The viewing component 26 includes a viewing frame 1 and two protective plate components 6 symmetrically arranged on the left and right sides of the viewing frame 1. The viewing frame 1 is provided with a viewing hole 101 extending in the front-to-back direction. The drive mechanism 23 drives the viewing component 26 to move in the left-to-right direction within the mounting hole 20.

[0039] The drive mechanism 23 drives the viewing component 26 to move in the left and right direction within the mounting hole 20, which can adjust the left and right position of the viewing hole 101 and change the position of the viewing hole 101 relative to the observation area. This effectively overcomes the problem of limited field of view and blind spots in traditional fixed viewing devices, greatly improving the flexibility and efficiency of the observation facility. Users can adjust the viewing range at any time according to actual needs and obtain more comprehensive observation information.

[0040] Specifically, such as Figure 2 , 3 As shown, in this embodiment, the vertical height of the viewing component 26 is adapted to the vertical height of the mounting hole 20. The viewing frame 1 is an integrated square structure composed of four frame plates 2 spliced ​​and fixed in the vertical and horizontal directions. The inner cavity of the viewing frame 1 forms the viewing hole 101. The protective plate component 6 includes a first protective plate 61 and a second protective plate 62 symmetrically arranged in the front-back direction. The spacing between the first protective plate 61 and the second protective plate 62 in the front-back direction is adapted to the front-back dimensions of the viewing frame 1. The ends of the first protective plate 61 and the second protective plate 62 facing away from the viewing frame 1 in the left-right direction are connected and fixed by a support frame 17, and the ends facing the viewing frame 1 are fixed to the frame plate 2 of the viewing frame 1 by fixing bolts 19, forming an integrated rigid viewing component 26.

[0041] The protective plate assembly 6 can be used to cover the mounting hole 20, ensuring that only the observation hole 101 serves as the viewing opening, thus avoiding excessive exposure. Furthermore, in this embodiment, the first protective plate 61, the second protective plate 62, the mounting base 21, and the civil engineering structure are all the same color, improving concealment.

[0042] In this embodiment, preferably, such as Figure 2 , 4 As shown, the drive mechanism 23 includes a sprocket set 24 and a drive chain 8. One sprocket set 24 is provided at each of the left and right ends of the mounting hole 20. The drive chain 8 is wound around and meshed with the two sprocket sets 24. The front end of the viewing component 26 is fixedly connected to the drive chain 8. The drive mechanism 23, employing the sprocket set 24 and drive chain 8, with the sprocket set 24 located at both ends of the mounting hole 20 and the drive chain 8 wound around and meshed with it and connected to the front end of the viewing component 26, provides stable power transmission, ensuring the viewing component 26 remains stable during left and right movements. This ensures accurate and reliable adjustment of the field of view, reduces shaking or jamming of the viewing component 26 due to drive instability, and improves the overall performance of the device.

[0043] In this embodiment, each sprocket set 24 includes two sprockets 9 arranged vertically at intervals. The two sprockets 9 are connected by a vertical sprocket shaft 10. The sprockets 9 are rotatably installed in the mounting hole 20 and their rotation axis extends vertically. A drive chain 8 is wound and meshed on the two sprockets 9 at the upper end and the two sprockets 9 at the lower end of the two sprocket sets 24, respectively.

[0044] Specifically, in this embodiment, the first guard plate 61 and the second guard plate 62 are both arranged on the outside of the drive chain 8. At the same time, the upper ends of the first guard plate 61 and the second guard plate 62 are flush with the upper end of the upper drive chain 8, and the lower ends of the first guard plate 61 and the second guard plate 62 are flush with the lower end of the lower drive chain 8. The viewing frame 1 is located between the two drive chains 8, and the upper and lower ends of the viewing frame 1 are flush with the lower end of the upper drive chain 8 and the upper end of the lower drive chain 8, respectively.

[0045] The upper and lower ends of the first guard plate 61 of the two guard plate assemblies 6 are fixedly mounted on the corresponding drive chains 8 via connectors 7. Similarly, the upper and lower sides of the front end of the viewing frame 1 are fixed to the corresponding drive chains 8 via connectors 7. The second guard plate 62 and the rear side of the viewing frame 1 are not fixed to the drive chains 8. Thus, by rotating the sprocket 9 to drive the drive chain 8, the viewing assembly 26 can move in the left and right direction. Specifically, in this embodiment, the connector 7 is a connecting buckle, which passes through the chain gap of the drive chain 8 and is fixed to the corresponding positions of the first guard plate 61 and the viewing frame 1.

[0046] Two chain gears 9 arranged at a vertical interval are connected by a vertical sprocket shaft 10, and the chain gears 9 at the upper and lower ends respectively wind and mesh with a driving chain 8. This structural design makes the power transmission more uniform, effectively avoiding problems such as chain slack or detachment caused by uneven single-point force, further enhancing the stability and reliability of the driving mechanism 23, and ensuring that the viewing component 26 can obtain a stable driving force when moving to different positions.

[0047] In this embodiment, preferably, the chain gear 9 is installed on the corresponding vertical sprocket shaft 10 in a non-rotating manner, the vertical sprocket shaft 10 is rotatably installed in the installation hole 20, a first bevel gear 141 is installed in the middle of the vertical sprocket shaft 10 in a non-rotating manner, and a second bevel gear 142 is meshed and driven behind the first bevel gear 141, and the second bevel gear 142 is driven to rotate by a driving member.

[0048] The use of the first bevel gear 141 and the second bevel gear 142 can achieve reverse transmission, which is convenient for the installation of the driving member and facilitates the rotation of the vertical sprocket shaft 10.

[0049] Specifically, in this embodiment, the driving member includes a driving rotating shaft 15. The front end of the driving rotating shaft 15 is in non-rotating fit with the second bevel gear 142, and the rear end exposes the rear end of the installation hole 20 and is provided with a rotating handle 16. The rear end of the driving rotating shaft 15 exposes the installation hole 20, which is convenient for arranging the rotating handle 16 behind the installation hole 20 and is convenient for the operation of the staff at the rear. At the same time, a set of driving members are respectively arranged on the left and right chain gear groups 24. The staff can move the observation position of the viewing hole 101 by rotating the rotating handle 16 at a relatively short distance, which is convenient for operation and improves the practicability. In other embodiments, the driving member can be a driving motor.

[0050] In this embodiment, preferably, two rear inner extension segments 27 are symmetrically arranged on the left and right sides at the rear end of the installation hole 20 to form a rear-side closing structure, and the driving rotating shaft 15 is rotatably installed in the rear inner extension segment 27. Two front inner extension segments 22 are symmetrically arranged on the left and right sides at the front end of the installation hole 20 to form a front-side closing structure, so that the structure of the entire installation hole 20 is in the shape of "zhong". At the same time, the size of the viewing component 26 is adapted to the interval between the two front inner extension segments 22, and the chain gear group 24 is integrally arranged inside the front inner extension segment 22.

[0051] Specifically, the driving mechanism 23 and the viewing component 26 are located between the front-side closing structure and the rear-side closing structure in the front and rear directions, and the chain gear group 24 is arranged between the corresponding front inner extension segment 22 and the rear inner extension segment 27, and the front-side closing structure and the rear-side closing structure are used to protect the chain gear group 24.

[0052] In this embodiment, to prevent the mounting hole 20 from being exposed when the viewing hole 101 moves, the sum of the left and right dimensions of a single first protective plate 61 and the viewing frame 1 is adapted to the left and right spacing of the two front inner extension sections 22. With this arrangement, when the viewing frame 1 moves to its limit position in the left and right direction, the first protective plate 61 will always cover the mounting hole 20. At the same time, the left and right length of the front inner extension section 22 is not less than the left and right length of the first protective plate 61, ensuring that the first protective plate 61 can be fully inserted into the front inner extension section 22.

[0053] Of course, in other embodiments, the interval between the two front inner extensions 22 can also be greater than the sum of the left and right lengths of a single first guard plate 61 and the viewing frame 1. In this case, a sliding plate of appropriate length is slidably provided on the inner side of the front inner extension 22 and between the first guard plate 61. A blocking structure is set between the first guard plate 61 and the sliding plate for linkage. For example, a sliding groove extending in the left and right direction is provided on the first guard plate 61, and the left and right ends of the sliding groove are closed. A slider that slides along the sliding groove is set at the corresponding position of the sliding plate. When the first guard plate 61 slides beyond the corresponding side of the front inner extension 22 in the left and right direction, the end of the sliding groove abuts against the slider, and the first guard plate 61 drives the corresponding sliding plate to slide along with it, continuing to block the mounting hole 20. When the first guard plate 61 moves toward the front inner extension 22 and penetrates into the front inner extension 22, the other end of the sliding groove abuts against the slider, and the first guard plate 61 overlaps with the sliding plate, driving the corresponding sliding plate to be housed inside the front inner extension 22.

[0054] Preferably, in this embodiment, the opposite sides of the two front inner extensions 22 are provided with outward chamfers, making the front closing structure an outwardly extending flared structure, which can further expand the observable range and improve practicality.

[0055] In this embodiment, preferably, two bearing seats 11 are symmetrically arranged on the upper and lower sides of the vertical sprocket shaft 10. The vertical sprocket shaft 10 is rotatably engaged with the bearing seats 11 via rotating bearings. A special embedded part 12 is fixedly installed on the side of the bearing seat 11 facing the front inner extension section 22, and the special embedded part 12 is fixedly installed on the front inner extension section 22 by expansion bolts 13. This allows the vertical sprocket shaft 10 to be rotatably installed in the mounting hole 20. Of course, in other embodiments, the upper and lower ends of the vertical sprocket shaft 10 can also be rotatably installed on the upper and lower sides of the mounting hole 20, respectively.

[0056] Preferably, in this embodiment, the upper and lower sides of the mounting hole 20 are provided with a first sliding rail 4 extending in the left-right direction, and the lower end of the viewing component 26 is slidably mounted on the first sliding rail 4. The first sliding rail 4 provides additional support points and sliding guidance for the viewing component 26, further enhancing the stability of the viewing component 26 during movement, reducing tilting or swaying caused by gravity or external forces, and ensuring the accuracy and reliability of the field of view adjustment.

[0057] Specifically, in this embodiment, a first sliding track 4 is provided on the upper and lower sides of the mounting hole 20, corresponding to the positions of the first guard plate 61 and the second guard plate 62. The length of the first sliding track 4 is adapted to the sliding distance of the first guard plate 61 and the second guard plate 62. Specifically, in this embodiment, a slide rail groove 5 extending in the left-right direction is provided on the first sliding track 4. Multiple rolling wheels 3 are rotatably installed on the upper and lower sides of the first guard plate 61 and the second guard plate 62, corresponding to the positions of their respective slide rail grooves 5. The rolling wheels 3 penetrate into the corresponding slide rail grooves 5 and roll along the length direction of the slide rail grooves 5, so that the first guard plate 61 and the second guard plate 62 can slide along the corresponding first sliding track 4.

[0058] Of course, in other embodiments, the first sliding track 4 can also be an I-beam track, and the upper and lower ends of the first guard plate 61 and the second guard plate 62 are respectively provided with slots adapted to the I-beam track to achieve sliding fit.

[0059] Preferably, in this embodiment, second sliding tracks (not shown in the figure) extending in opposite directions along the left and right sides are symmetrically provided on the upper and lower sides of the mounting hole 20, and the upper and lower end faces of the viewing frame 1 are respectively slidably engaged with the second sliding tracks on the corresponding sides.

[0060] Specifically, the second sliding track is positioned at the midpoint of the mounting hole 20 in the front-rear direction. Simultaneously, a sliding groove 5 extending in the left-right direction is also provided on the second sliding track. Mounting blocks 25 extending in the left-right direction are positioned at the midpoint of the upper and lower ends of the viewing frame 1. The opposing sides of the two mounting blocks 25 are flush with the opposing sides of the two drive chains 8. Multiple rolling wheels 3 are arranged at intervals in the left-right direction on the side of the mounting blocks 25 facing away from the viewing hole 101. The rolling wheels 3 are rotatably mounted on the mounting blocks 25. The rolling wheels 3 are inserted into and roll within the sliding groove of the second sliding track to achieve a sliding engagement between the viewing frame 1 and the mounting hole 20 in the left-right direction. Of course, in other embodiments, the second sliding track can also be an I-beam track, with corresponding notches on the mounting plate adapted to the I-beam track to achieve a sliding engagement between the viewing frame 1 and the mounting hole 20.

[0061] By using the roller 3 in conjunction with the second sliding track, the movement of the viewing component 26 can be facilitated by rolling friction, and the load-bearing capacity can be improved. At the same time, the upper and lower rollers 3 can be used to prevent the viewing component 26 from detaching.

[0062] Preferably, in this embodiment, limiters (not shown in the figure) are provided at the ends of both the first sliding track 4 and the second sliding track. Specifically, the limiters are limit buckles that are fixed on the first sliding track 4 and the second sliding track. The limit buckles cooperate with the corresponding positions of the viewing component 26 to achieve the limit.

[0063] In other embodiments, the drive mechanism 23 may also be drive cylinders disposed on the left and right sides of the viewing assembly 26. The side of the drive cylinder facing away from the viewing assembly 26 extends in the left and right direction and is fixed to the side wall of the mounting hole 20 on the corresponding side. The left and right movement of the viewing assembly 26 is achieved by using two drive cylinders. Specifically, the drive cylinders may be drive cylinders or drive hydraulic cylinders. In other embodiments, the drive mechanism 23 may also be a screw and nut mechanism. Specifically, a threaded hole is provided on the mounting block 25 at the lower end of the viewing frame 1, which extends in the left and right direction. A drive screw extending in the left and right direction is threaded into the threaded hole. Both ends of the drive screw are rotatably engaged with the mounting hole 20. A drive motor is installed at one end of the drive screw. The drive motor drives the drive screw to rotate, thereby moving the mounting block 25 in the left and right direction, thus realizing the left and right movement of the viewing assembly 26.

[0064] In this embodiment, the viewing hole 101 is 300x450mm in size, and the distance between the two vertical sprocket shafts 10 is 1200-1500mm. The mounting base 21 is formed by concrete casting. In actual construction, the size of the mounting base 21 is first designed according to the observation range, and then mounting holes adapted to the mounting base 21 are reserved in the civil structure. The viewing component 26 and the drive component are pre-installed on the mounting base 21 as an integrated assembly. The viewing device is modularly produced and can be directly placed on the mounting holes of the civil structure during installation. It has high on-site installation efficiency, low construction cost, and durability.

[0065] In summary, the observation device of this utility model can change the position of the observation hole 101. The device solves the problem that the fixed observation hole 101 cannot be moved or its orientation changed. It can adapt to complex environments, meet the requirements of multiple observation angles, and improve the applicability and efficiency of the observation facility. At the same time, the observation device is a prefabricated assembly component, which has high on-site installation efficiency, low construction cost, and durability. The device has an integrated design, is beautiful and elegant, has a long service life, flexible component replacement, and can reduce later maintenance costs.

[0066] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0067] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0068] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

Claims

1. A viewing device with an adjustable field of view, characterized in that, The device includes a mounting base with a through mounting hole running in the front-to-back direction. A viewing component and a drive mechanism are disposed within the mounting hole. The viewing component includes a viewing frame and two protective plate assemblies symmetrically arranged on the left and right sides of the viewing frame. The viewing frame has a viewing hole extending in the front-to-back direction. The drive mechanism drives the viewing component to move in the left-to-right direction within the mounting hole.

2. The viewing device with adjustable field of view according to claim 1, characterized in that, The drive mechanism includes a sprocket set and a drive chain. A sprocket set is provided at each of the left and right ends of the mounting hole. The drive chain is wound and meshed on the two sprocket sets. The front end of the viewing component is fixedly connected to the drive chain.

3. The viewing device with adjustable field of view according to claim 2, characterized in that, The sprocket set includes two sprockets arranged vertically at intervals. The two sprockets are connected by a vertical sprocket shaft. The sprockets are rotatably installed in the mounting hole and their rotation axis extends vertically. A drive chain is wound and meshed on the two sprockets at the upper end and the two sprockets at the lower end of the two sets of sprocket sets, respectively.

4. The viewing device with adjustable field of view according to claim 3, characterized in that, The sprocket anti-rotation is mounted on the corresponding vertical sprocket shaft, the vertical sprocket shaft is rotatably mounted in the mounting hole, the middle of the vertical sprocket shaft is anti-rotation mounted with a first bevel gear, the rear of the first bevel gear is meshed with a second bevel gear, the second bevel gear is driven to rotate by a driving component.

5. The viewing device with adjustable field of view according to claim 4, characterized in that, The driving component includes a driving shaft, the front end of which engages with the second bevel gear to prevent rotation, and the rear end of which is exposed through the mounting hole and provided with a rotating handle.

6. The viewing device with adjustable field of view according to claim 5, characterized in that, Two rear inner extension sections are symmetrically arranged on the left and right sides of the rear end of the mounting hole, and the drive shaft is rotatably installed in the rear inner extension sections.

7. The viewing device with adjustable field of view according to claim 4, characterized in that, Two bearing seats are symmetrically arranged on the upper and lower sides of the vertical sprocket shaft. The vertical sprocket shaft is rotatably engaged with the bearing seats through a rotating bearing. The end of the bearing seat facing away from the vertical sprocket shaft is fixedly connected to the mounting hole.

8. The viewing device with adjustable field of view according to claim 2, characterized in that, Two front inner extensions are symmetrically arranged on the left and right sides of the front end of the mounting hole. The size of the viewing component is adapted to the spacing of the two front inner extensions. The sprocket set is integrally arranged inside the front inner extensions. The opposite sides of the two front inner extensions are provided with external chamfers.

9. The viewing device with adjustable field of view according to claim 1, characterized in that, The mounting hole is provided with a first sliding track extending in the left-right direction, and the viewing component is slidably mounted on the corresponding first sliding track.

10. The viewing device with adjustable field of view according to claim 9, characterized in that, The protective plate assembly slides in conjunction with the first sliding rail, and the upper and lower sides of the mounting hole are symmetrically provided with second sliding rails extending in opposite directions to the left and right. The upper and lower end faces of the viewing frame slide in conjunction with the second sliding rails on the corresponding sides.

Images