Prism dustproof mounting tool

Abstract

The application relates to a prism dustproof mounting tool. The prism dustproof mounting tool comprises a centering base, a movable dust cover, a fixed dust cover and a driving mechanism, the top of the centering base is provided with a centering hole for mounting the prism; the movable dust cover is rotationally connected to the centering base and covers the outside of the prism, and the side wall of the movable dust cover is provided with a detection window; the fixed dust cover is fixedly arranged on the centering base; the driving mechanism is drivingly connected to the movable dust cover and drives the movable dust cover to rotate to cover the detection window with the fixed dust cover. The prism is mounted on the centering base through the prism mounting hole. During measurement, the detection window is separated from the fixed dust cover and aligned with the prism, and the light signal emitted by a total station or a measuring robot can enter the movable dust cover through the detection window and irradiate on the prism, the prism reflects the light back to complete detection. After detection, the fixed dust cover seals the detection window to prevent dust outside from adhering to the prism.

Description

Technical Field

[0001] This application relates to the field of railway monitoring equipment technology, and in particular to dustproof installation fixtures for prisms. Background Technology

[0002] In railway construction and maintenance, prisms, as key components for high-precision measurement, need to be used in conjunction with total stations, surveying robots, and other equipment to monitor the spatial position of control points, tracks, bridges, and other structures. Currently, prisms at railway control points are generally installed using a forced alignment device. This involves using a centering base on a precast concrete base or steel support, and screwing the prism directly into the base with matching screws to reduce installation repeatability errors.

[0003] However, since control points are mostly located in suburban and rural environments, prisms are exposed to the natural environment for extended periods, making them highly susceptible to dust accumulation due to wind, dust storms, and other factors. This dust directly affects the accuracy of the measurement signal reflection, leading to deviations in the monitoring data. Furthermore, current technologies primarily rely on periodic maintenance and dust removal, which is not only costly to maintain but also results in dust accumulation during cleaning intervals continuing to impact measurement accuracy. Utility Model Content

[0004] Based on this, a dustproof installation fixture for prisms is provided to solve the problem of dust accumulation on prisms.

[0005] An embodiment of this application provides a dustproof mounting fixture for a prism, comprising:

[0006] A centering base, wherein a centering hole is provided on the top of the centering base for mounting a prism;

[0007] A movable dust cover is rotatably connected to the centering base and covers the outside of the prism. The side wall of the movable dust cover is provided with a detection window.

[0008] A fixed dust cover is fixedly installed on the centering base;

[0009] A driving mechanism is connected to the movable dust cover and drives the movable dust cover to rotate until the fixed dust cover covers the detection window.

[0010] In one embodiment, the centering base includes:

[0011] Embedded seat

[0012] The positioning plate is fixedly installed on the top of the pre-embedded base, and the centering hole is located at the center of the positioning plate; the lower end of the fixed dust cover is fixedly connected to the positioning plate, and the lower end of the movable dust cover is rotatably connected to the positioning plate.

[0013] In one embodiment, the upper surface of the positioning disk is provided with a detachable connecting plate;

[0014] The lower end of the fixed dust cover is fixedly connected to the connecting plate;

[0015] The lower end of the movable dust cover is rotatably connected to the connecting plate;

[0016] The drive mechanism is mounted on the connecting plate.

[0017] In one embodiment, the connecting plate is provided with an annular positioning boss, and the inner sidewall of the positioning boss is provided with an annular sliding groove; the lower end of the fixed dust cover is fixedly connected to the positioning boss.

[0018] The lower outer wall of the movable dust cover is provided with multiple sliders, which are located in the slide groove and slide in cooperation with the slide groove.

[0019] In one embodiment, the drive mechanism includes:

[0020] Drive motor;

[0021] The drive gear is provided on the main shaft of the drive motor;

[0022] The driven gear ring is provided on the inner wall of the movable dust cover, and the driving gear meshes with the driven gear ring.

[0023] In one embodiment, the prism dustproof mounting fixture further includes an air blowing mechanism, the air blowing mechanism comprising:

[0024] air pump;

[0025] An air supply pipe connects the air outlet of the air pump to the inner cavity of the movable dust cover.

[0026] In one embodiment, the air inlet of the air pump is connected to a filter screen.

[0027] In one embodiment, the movable dust cover is rotatably connected to the centering base along the axis of the centering hole.

[0028] In one embodiment, the movable dust cover is configured as a cylindrical cover structure;

[0029] The fixed dust cover is configured as an arc-shaped sheet structure, and the inner wall of the fixed dust cover is used to fit against the outer wall of the movable dust cover.

[0030] In one embodiment, the top of the movable dust cover is detachably connected to a sealing cap.

[0031] According to the prism dustproof installation fixture of this application embodiment, the prism is installed on the centering base through the prism mounting hole. During measurement, the drive mechanism drives the movable dustproof cover to rotate a certain angle, causing the detection window to detach from the fixed dustproof cover and align with the prism. The light signal emitted by the total station or measuring robot can enter the movable dustproof cover through the detection window and illuminate the prism. The prism reflects the light back, completing the detection. After the detection is completed, the drive mechanism drives the movable dustproof cover to rotate a certain angle again, causing the detection window to return to the fixed dustproof cover. The fixed dustproof cover closes the detection window, preventing external dust, debris, etc. from reaching the prism and adhering to it under the action of wind. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a prism dustproof installation fixture according to an embodiment of this application.

[0033] Figure 2 This is a cross-sectional view of the fixed dust cover and the movable dust cover in a prism dustproof installation fixture according to an embodiment of this application.

[0034] Figure label:

[0035] 100. Centering base; 110. Positioning plate; 111. Centering hole; 112. Connecting plate; 1121. Positioning boss; 1122. Slide groove; 120. Embedded seat;

[0036] 200. Movable dust cover; 210. Inspection window; 220. Sliding block; 230. Sealing cover;

[0037] 300. Fixed dust cover;

[0038] 400. Drive mechanism; 410. Drive motor; 420. Drive gear; 430. Driven gear ring;

[0039] 500. Air blowing mechanism; 510. Air pump; 520. Air delivery pipe. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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 of this application.

[0042] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0046] See Figure 1 and Figure 2 At least one embodiment of this application provides a prism dustproof installation fixture, which includes a centering base 100, a movable dustproof cover 200, a fixed dustproof cover 300, and a driving mechanism 400. The centering base 100 has a centering hole 111 on its top for mounting the prism. The movable dustproof cover 200 is rotatably connected to the centering base 100 and covers the outside of the prism. The side wall of the movable dustproof cover 200 has a detection window 210. The fixed dustproof cover 300 is fixedly installed on the centering base 100. The driving mechanism 400 is drivenly connected to the movable dustproof cover 200 and drives the movable dustproof cover 200 to rotate until the fixed dustproof cover 300 covers the detection window 210.

[0047] Specifically, the centering hole 111 is used to mount the prism, and the centering base 100 can eliminate the centering error during prism installation, ensuring that the repeatability and accuracy of each measurement meet the requirements. The centering hole 111 can be a slot, preferably a threaded hole, allowing the prism to be directly threaded onto the centering base 100, making operation more convenient. The fixed dust cover 300 and the movable dust cover 200 have the functions of wind and dust protection, and can be made of metal or plastic. The fixed dust cover 300 is fixedly mounted on the centering base 100, and its position remains unchanged. The movable dust cover 200 can rotate, and when the movable dust cover 200 rotates, it can drive the detection window 210 to rotate, thereby moving the detection window 210 to multiple positions. The fixed dust cover 300 and the movable dust cover 200 can be fitted with a clearance. When the detection window 210 moves to the inner side of the fixed dust cover 300, the fixed dust cover 300 can close the detection window 210. The fixed dust cover 300 and the movable dust cover 200 form a closed mounting cavity, in which the prism is located, preventing external dust and debris from entering the mounting cavity and keeping the prism surface clean. When the detection window 210 leaves the fixed dust cover 300, external light can enter the mounting cavity through the detection window 210 and illuminate the prism, completing the detection. The drive mechanism 400 can drive the movable dust cover 200 to rotate and accurately control the rotation angle of the movable dust cover 200, thereby driving the detection window 210 to move accurately to the required position.

[0048] According to the prism dustproof installation fixture of this application embodiment, the prism is installed on the centering base 100 through the prism mounting hole. During measurement, the drive mechanism 400 drives the movable dustproof cover 200 to rotate a certain angle, so that the detection window 210 is disengaged from the fixed dustproof cover 300 and aligned with the prism. The light signal emitted by the total station or measuring robot can enter the movable dustproof cover 200 through the detection window 210 and illuminate the prism. The prism reflects the light back, completing the detection. After the detection is completed, the drive mechanism 400 drives the movable dustproof cover 200 to rotate a certain angle again, so that the detection window 210 returns to the fixed dustproof cover 300. The fixed dustproof cover 300 closes the detection window 210 to prevent external dust, debris, etc. from reaching the prism and adhering to it under the action of wind.

[0049] In some embodiments, the centering base 100 includes a pre-embedded base 120 and a positioning disk 110. The positioning disk 110 is fixedly disposed on the top of the pre-embedded base 120, and the centering hole 111 is disposed at the center of the positioning disk 110. The lower end of the fixed dust cover 300 is fixedly connected to the positioning disk 110, and the lower end of the movable dust cover 200 is rotatably connected to the positioning disk 110.

[0050] The embedded base 120, serving as the bottom structure of the centering base 100, is a precast concrete base or steel support. Its core function is to provide a stable installation foundation for the entire tooling. This rigid fixing method avoids the widening of gaps caused by tooling swaying, reducing the possibility of dust intrusion from the bottom gaps. At the same time, the concrete or steel material itself has good weather resistance and sealing properties, preventing ground dust from directly contacting the upper positioning plate 110 and prism assembly.

[0051] The positioning plate 110 can be connected to the embedded base 120 via a telescopic connecting column. The height of the positioning plate 110 can be adjusted, thereby adjusting the height of the prism to ensure that the prism is always within the optimal protection range of the dust cover. This avoids gaps between the dust cover and the prism due to height mismatch, ensuring the stability of the dustproof effect. The positioning plate 110 can be a disc to seal the lower end of the movable dust cover 200, improving the sealing and thus enhancing the dustproof effect.

[0052] In some embodiments, the upper surface of the positioning disk 110 is provided with a detachable connecting plate 112; the lower end of the fixed dust cover 300 is fixedly connected to the connecting plate 112; the lower end of the movable dust cover 200 is rotatably connected to the connecting plate 112; and the drive mechanism 400 is mounted on the connecting plate 112.

[0053] Specifically, to facilitate the installation of the movable dust cover 200, the fixed dust cover 300, and the drive mechanism 400, a detachable connecting plate 112 is provided on the upper surface of the positioning plate 110. The lower end of the fixed dust cover 300 is fixedly connected to the connecting plate 112, the lower end of the movable dust cover 200 is rotatably engaged with the connecting plate 112, and the drive mechanism 400 is mounted on the connecting plate 112. During assembly, the movable dust cover 200, the drive mechanism 400, and the fixed dust cover 300 are first installed on the connecting plate 112, and then the connecting plate 112 is installed on the positioning plate 110.

[0054] The connecting plate 112, as an independent assembly unit, can pre-integrate the movable dust cover 200, the fixed dust cover 300, and the drive mechanism 400. The lower end of the fixed dust cover 300 is fixedly connected to the connecting plate 112, ensuring precise positioning and avoiding potential deviations caused by direct installation on the positioning plate 110, thus guaranteeing a tight seal on the detection window 210. The lower end of the movable dust cover 200 rotatably engages with the connecting plate 112. Through the pre-designed slide groove 1122 and slider 220 structure, the smoothness and sealing of the rotation can be adjusted during the assembly stage, reducing gaps caused by later installation errors. The drive mechanism 400, mounted on the connecting plate 112, can pre-calibrate its transmission engagement with the movable dust cover 200, ensuring precise rotation angle of the movable dust cover 200, thereby guaranteeing the alignment and sealing of the detection window 210 and the fixed dust cover 300.

[0055] The integrated connecting plate 112 is connected to the positioning plate 110 by multiple screws. All dustproof components can be installed with just one positioning, avoiding damage to the surface of the positioning plate 110 caused by multiple operations, and indirectly ensuring the sealed fit between the movable dust cover 200 and the positioning plate 110.

[0056] Through the above-described configuration, the connecting plate 112 creates a transitional connection between the movable dust cover 200, the fixed dust cover 300, and the positioning plate 110, reducing the number of gaps in direct contact between the components and the positioning plate 110. For example, the rotational fit clearance between the lower end of the movable dust cover 200 and the connecting plate 112 can be controlled by the precise design of the slide groove 1122 and the slider 220. The fixed connection between the fixed dust cover 300 and the connecting plate 112 can be sealed with sealant to further prevent dust from entering through the connection gaps. The removability of the connecting plate 112 facilitates cleaning and maintenance of dust-proof components (such as the inner wall of the dust cover and the drive mechanism 400) during later maintenance, preventing dust accumulation from affecting rotational flexibility or sealing effect, and indirectly maintaining long-term dustproof performance.

[0057] In some embodiments, the connecting plate 112 is provided with an annular positioning boss 1121, and the inner sidewall of the positioning boss 1121 is provided with an annular sliding groove 1122; the lower end of the fixed dust cover 300 is fixedly connected to the positioning boss 1121; the lower outer sidewall of the movable dust cover 200 is provided with a plurality of sliders 220, and the sliders 220 are located in the sliding groove 1122 and slide in cooperation with the sliding groove 1122.

[0058] Specifically, the positioning boss 1121 can be composed of multiple arc-shaped bosses joined together, and the positioning boss 1121 can be connected to the connecting plate 112 by screws. There can be three or four sliders 220, which are located within and slidably engage with the slide groove 1122. The sliders 220 provide support and positioning, ensuring the stable rotation of the movable dust cover 200. A gap exists between the lower end of the movable dust cover 200 and the connecting plate 112, and the lower end of the fixed dust cover 300 is fixedly connected to the positioning boss 1121, with the fixed dust cover 300 located outside the movable dust cover 200.

[0059] The annular groove 1122 on the inner wall of the positioning boss 1121 forms a sliding fit with the slider 220 at the lower end of the movable dust cover 200. The slider 220 is evenly distributed on the outer wall of the movable dust cover 200, ensuring that the movable dust cover 200 rotates stably along the annular trajectory and avoiding excessive gaps caused by shaking. This tight fit reduces the possibility of dust entering through the gap between the movable dust cover 200 and the connecting plate 112. At the same time, the annular closed structure of the groove 1122 can block some of the horizontally falling dust. The positioning boss 1121 itself is a circular structure. After the lower end of the fixed dust cover 300 is fixedly connected to it, the positioning boss 1121 can serve as the mounting base for the fixed dust cover 300, forming a radial double-layer protection between the fixed dust cover 300 and the movable dust cover 200, further preventing external dust from contacting the detection window 210 area of ​​the movable dust cover 200.

[0060] The positioning boss 1121 can be formed by splicing multiple arc-shaped bosses and fixed to the connecting plate 112 with screws. This facilitates processing and installation, and the roundness of the slide groove 1122 can be ensured by adjusting the splicing accuracy, avoiding sliding jamming caused by overall molding errors. The splicing joints can be sealed to reduce gaps and enhance dustproof effect. The slider 220 is not only a sliding component, but also provides vertical support for the movable dust cover 200, preventing the movable dust cover 200 from sinking under its own weight and coming into contact with the connecting plate 112 and wearing down. It maintains a reasonable gap between the lower end of the movable dust cover 200 and the connecting plate 112, indirectly ensuring the airtightness of the overall structure.

[0061] With the above settings, after the fixed dust cover 300 is fixed to the positioning boss 1121, its inner wall can fit against the outer wall of the movable dust cover 200. When the movable dust cover 200 rotates to the point where the detection window 210 is covered by the fixed dust cover 300, the positioning boss 1121, the fixed dust cover 300 and the movable dust cover 200 form a composite structure of an outer fixed barrier and an inner rotation protection, which blocks dust from entering the closed space where the prism is located from both radial and axial directions, ensuring the continuity of the dustproof effect.

[0062] In some embodiments, the drive mechanism 400 includes a drive motor 410, a drive gear 420, and a driven gear. The drive gear 420 is provided on the main shaft of the drive motor 410; a driven gear ring 430 is provided on the inner wall of the movable dust cover 200, and the drive gear 420 meshes with the driven gear ring 430. The drive gear 420 on the main shaft of the drive motor 410 meshes with the driven gear ring 430 on the inner wall of the movable dust cover 200. This gear transmission method can achieve high-precision angle control. After the measurement is completed, the drive mechanism 400 can drive the movable dust cover 200 to rotate precisely through gear transmission, ensuring that the detection window 210 is completely aligned with the fixed dust cover 300, so that the fixed dust cover 300 tightly covers the detection window 210, avoiding gaps caused by rotation angle deviation, thereby blocking the path of dust entering through the detection window 210.

[0063] Specifically, the drive motor 410 can be a stepper motor, mounted on the connecting plate 112 and located inside the movable dust cover 200, preventing external dust from entering the drive motor 410. A battery can be installed on the connecting plate 112 to power the drive motor 410. Using a stepper motor as the drive motor 410 allows for precise angular displacement through control pulse signals, further ensuring the accuracy of the rotation position of the movable dust cover 200. This ensures that the detection window 210 is tightly sealed by the fixed dust cover 300 in non-measuring states, enhancing the dustproof effect. The drive motor 410 is mounted on the connecting plate 112 and located inside the movable dust cover 200. The movable dust cover 200 itself provides physical protection for the drive motor 410, reducing direct contact between external dust and the motor, preventing dust accumulation that could cause motor malfunctions, ensuring the long-term stable operation of the drive mechanism 400, and indirectly maintaining the normal opening and closing function of the dust cover. A battery is installed on the connecting plate 112 to power the drive motor 410, eliminating the need for external wiring. This reduces the possibility of dust being introduced through wiring holes and avoids power outages caused by environmental factors. It also ensures that the drive mechanism 400 can drive the dust cover to complete the sealing action at any time.

[0064] In some embodiments, in order to prevent dust and other debris from entering the movable dust cover 200 through the detection window 210 during the measurement process, the mirror dust cover installation fixture also includes an air blowing mechanism 500, which includes an air pump 510 and an air supply pipe 520; the air supply pipe 520 connects the air outlet of the air pump 510 to the inner cavity of the movable dust cover 200.

[0065] With the above setup, the detection window 210 needs to be open to allow light signal transmission. At this time, the movable dust cover 200 forms a communication channel with the outside world through the window, and dust may enter with the airflow. The air pump 510 of the blowing mechanism 500 supplies air to the inner cavity of the movable dust cover 200 through the air supply pipe 520, making the air pressure in the inner cavity higher than the ambient air pressure, forming a positive pressure environment. According to the gas flow characteristics, the high-pressure gas will be discharged from the inside of the movable dust cover 200 to the outside through the detection window 210, forming an outward airflow barrier, directly blocking the backflow of dusty air from the outside through the window, cutting off the path for dust to enter from the source. The air supply pipe 520, as an air passage, directly connects the air pump 510 and the inner cavity of the movable dust cover 200. Its sealed connection design can prevent insufficient air pressure caused by gas leakage, ensuring a stable and effective positive pressure environment.

[0066] In some embodiments, the air inlet of the air pump 510 is connected to a filter screen, which can filter dust and impurities in the intake air, ensuring that the gas delivered into the inner cavity of the movable dust cover 200 is clean and avoiding the introduction of new pollutants during the air supply process.

[0067] In some embodiments, the movable dust cover 200 is rotatably connected to the centering base 100 along the axis of the centering hole 111. During rotation, the detection window 210 on the side wall of the movable dust cover always makes a circular motion around the centering hole 111, i.e., the prism, to ensure that the window can be accurately aligned with the prism during measurement and to avoid signal transmission deviation caused by offset. When the detection window 210 needs to be covered by the fixed dust cover 300, the coaxial rotation can make the window fit more tightly with the fixed dust cover 300, reduce the gaps caused by eccentric rotation, and thus enhance the sealing and dustproof effect in non-measurement states.

[0068] Meanwhile, the above settings reduce abnormal wear between the lower slider 220 of the movable dust cover 200 and the slide groove 1122, extend the service life of the precision fit structure, and ensure the stability of the dustproof sealing performance during long-term use.

[0069] In some embodiments, the movable dust cover 200 is configured as a cylindrical cover structure; the fixed dust cover 300 is configured as an arc-shaped sheet structure, with the inner wall of the fixed dust cover 300 fitting against the outer wall of the movable dust cover 200. The cylindrical circumferentially enclosed structure surrounds the prism 360 degrees, forming a complete three-dimensional protective space, blocking dust from directly intruding from the sides and top, and reducing the contact area between the prism and the external environment. The cylindrical structure matches the design of rotating along the axis of the centering hole 111, and its regular outer wall ensures uniform fitting clearance with the fixed dust cover 300 during rotation, avoiding sealing leaks caused by irregular shape. At the same time, the cylindrical sidewall provides a flat and stable carrier for the setting of the detection window 210, facilitating precise alignment of the window with the fixed dust cover 300.

[0070] The arc-shaped structure matches the curvature of the outer wall of the cylindrical movable dust cover 200. When the movable dust cover 200 rotates to align with the detection window 210 and the fixed dust cover 300, the two fit tightly together, forming a line contact seal that effectively prevents dust from entering through window gaps. Compared to other shapes, the arc-shaped sheet can maximize the coverage of the detection window 210 area without affecting the rotation of the movable dust cover 200, thus improving sealing reliability. The fixed dust cover 300 with its sheet structure does not need to surround the entire movable dust cover 200; it only needs to cover the area that the detection window 210 may rotate to. This reduces material costs and avoids interference with the rotation of the movable dust cover 200. At the same time, the fitting design of its arc-shaped inner wall with the outer wall of the movable dust cover 200 allows for a dynamic sealing transition as the movable dust cover 200 rotates, ensuring continuous dust protection when not in a detection state.

[0071] In some embodiments, a sealing cover 230 is detachably connected to the top of the movable dust cover 200. It is understood that the sealing cover 230 can be integrally formed with the movable dust cover 200, or it can be connected to the movable dust cover 200 by bolts, welding, or other connection methods. The prism mounting hole is located inside the movable dust cover 200. As a closed structure at the top of the movable dust cover 200, the sealing cover 230 directly covers the area above the space where the prism is located, effectively preventing dust, rainwater, or debris falling from the top from entering the interior of the movable dust cover 200.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A dustproof installation fixture for a prism, characterized in that, include: A centering base, wherein a centering hole is provided on the top of the centering base for mounting a prism; A movable dust cover is rotatably connected to the centering base and covers the outside of the prism. The side wall of the movable dust cover is provided with a detection window. A fixed dust cover is fixedly installed on the centering base; A driving mechanism is connected to the movable dust cover and drives the movable dust cover to rotate until the fixed dust cover covers the detection window.

2. The prism dustproof installation fixture according to claim 1, characterized in that, The centering base includes: Embedded seat The positioning plate is fixedly installed on the top of the pre-embedded base, and the centering hole is located at the center of the positioning plate; the lower end of the fixed dust cover is fixedly connected to the positioning plate, and the lower end of the movable dust cover is rotatably connected to the positioning plate.

3. The prism dustproof installation fixture according to claim 2, characterized in that, The upper surface of the positioning disk is provided with a detachable connecting plate; The lower end of the fixed dust cover is fixedly connected to the connecting plate; The lower end of the movable dust cover is rotatably connected to the connecting plate; The drive mechanism is mounted on the connecting plate.

4. The prism dustproof installation fixture according to claim 3, characterized in that, The connecting plate is provided with an annular positioning boss, and the inner side wall of the positioning boss is provided with an annular sliding groove; the lower end of the fixed dust cover is fixedly connected to the positioning boss. The lower outer wall of the movable dust cover is provided with multiple sliders, which are located in the slide groove and slide in cooperation with the slide groove.

5. The prism dustproof installation fixture according to claim 1, characterized in that, The drive mechanism includes: Drive motor; The drive gear is provided on the main shaft of the drive motor; The driven gear ring is provided on the inner wall of the movable dust cover, and the driving gear meshes with the driven gear ring.

6. The prism dustproof installation fixture according to claim 1, characterized in that, The prism dustproof installation fixture also includes an air blowing mechanism, which includes: air pump; An air supply pipe connects the air outlet of the air pump to the inner cavity of the movable dust cover.

7. The prism dustproof installation fixture according to claim 6, characterized in that, The air pump has a filter screen connected to its air inlet.

8. The prism dustproof installation fixture according to claim 1, characterized in that, The movable dust cover is rotatably connected to the centering base along the axis of the centering hole.

9. The prism dustproof installation fixture according to claim 8, characterized in that, The movable dust cover is configured as a cylindrical cover structure; The fixed dust cover is configured as an arc-shaped sheet structure, and the inner wall of the fixed dust cover is used to fit against the outer wall of the movable dust cover.

10. The prism dustproof installation fixture according to claim 1, characterized in that, The top of the movable dust cover is detachably connected to a sealing cap.

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