A fixture for tunnel visibility detection
Patent Information
- Application Number
- CN202522722776.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-23
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-23
AI Technical Summary
现有装置往往采用固定角度安装，或调节机制简陋，无法实现多角度微调，导致监测仪难以适配不同隧道结构或监测需求，从而影响能见度数据的采集效率
装置的角度调节功能通过立板上的弧形槽与压紧轴的配合实现。弧形槽所对应的圆心角为90度，允许旋转座相对于立板进行一定范围内的转动调节。压紧轴穿设于弧形槽内，并通过连接轴与立板连接，使得用户能够轻松调整旋转座的角度，从而改变能见度检测仪的安装方向，确保监测仪能够对准隧道内的特定区域，如交通流线或烟雾积聚点，以优化能见度检测效果，角度固定后，压紧轴提供锁定力，防止因外部振动或环境影响导致的角度偏移，保证监测的连续性。
Smart Images
Figure CN224920105U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fixed installation technology for tunnel visibility detection, and in particular to a fixed device for tunnel visibility detection. Background Technology
[0002] The tunnel environment is complex, and visibility detectors need to be precisely aligned with the monitoring area to ensure data reliability. However, traditional installation methods have shortcomings in angle adjustment and fixing mechanisms. Firstly, flexible adjustment of the installation angle is a key issue. Existing devices often use fixed-angle installations or rudimentary adjustment mechanisms, failing to achieve multi-angle fine-tuning. This makes it difficult for the detector to adapt to different tunnel structures or monitoring needs, thus affecting the efficiency of visibility data acquisition. For example, when the tunnel is curved or its height changes, the detector needs to be installed at an angle to cover the best field of view. However, current technology lacks simple angle adjustment methods, making the installation process reliant on manual trial and error, increasing time and costs.
[0003] Secondly, insufficient vertical stability of the monitoring instrument is another prominent issue. Vehicle traffic, vibrations, or environmental factors within the tunnel can easily cause the instrument to shift, and vertical loosening, in particular, directly affects monitoring accuracy. Existing fixing methods may employ simple clamps or bolt tightening, which can easily lead to the instrument sliding or tilting, requiring frequent recalibration and reducing equipment reliability. Furthermore, the ease of adjustment of the installation device also faces challenges. In existing technologies, the adjustment process may involve multiple independent components, making operation cumbersome and lacking an integrated fine-tuning mechanism. This makes it difficult for installers to quickly achieve precise fixation, increasing installation difficulty and the risk of human error. Utility Model Content
[0004] In view of this, the technical problem to be solved by this utility model is: how to provide a fixing device for tunnel visibility detection to improve the fixing stability of its visibility detector.
[0005] To achieve the above objectives, this utility model proposes a fixing device for tunnel visibility detection, which includes a base plate, a vertical plate, a rotating seat, a connecting shaft, a pressing shaft, a support plate, an adjusting plate, and an adjusting shaft. The upright plate is fixedly mounted on the base plate, and an arc-shaped groove is provided on the upright plate. The lower part of the rotating seat is connected to the upright plate through the connecting shaft. The pressing shaft is connected to the rotating seat, and part of the pressing shaft passes through the arc-shaped groove. The rotation angle between the upright plate and the rotating seat is adjusted by the cooperation of the pressing shaft and the arc-shaped groove. The support plate is fixedly mounted on the top of the rotating base. The support plate has a mounting hole, through which the visibility detector is fixedly connected. A first clamping part is provided on one side of the support plate, and a mounting groove is provided on the side of the support plate. A protrusion is provided on the side of the adjusting plate and is fitted into the mounting groove. A second clamping part is provided on the adjusting plate. An adjusting shaft passes through the adjusting plate and the support plate and is threadedly connected to the adjusting plate and the support plate. The rotation of the adjusting shaft drives the adjusting plate to move along the axis of the adjusting shaft. The first clamping part and the second clamping part form a clamping groove to restrict the vertical movement of the visibility detector.
[0006] Furthermore, the width of the clamping groove gradually decreases in the upward direction along the top of the support plate.
[0007] Furthermore, the mounting groove is recessed along the width direction of the support plate, and the rotation of the adjusting plate is restricted by the cooperation of the mounting groove and the protrusion.
[0008] Furthermore, the axial direction of the clamping shaft is parallel to the axial direction of the connecting shaft.
[0009] Furthermore, the central angle corresponding to the arc-shaped groove is 90°.
[0010] Compared with related technologies, the fixed device for tunnel visibility detection proposed in this utility model has the following advantages: The device's angle adjustment function is achieved through the interaction between the arc-shaped groove on the upright plate and the clamping shaft. The central angle corresponding to the arc-shaped groove is 90 degrees, allowing the rotating seat to rotate within a certain range relative to the upright plate. The clamping shaft passes through the arc-shaped groove and is connected to the upright plate via a connecting shaft, allowing the user to easily adjust the angle of the rotating seat, thereby changing the installation direction of the visibility detector. This ensures that the detector can be aimed at specific areas within the tunnel, such as traffic flow lines or smoke accumulation points, to optimize visibility detection results. Once the angle is fixed, the clamping shaft provides locking force to prevent angle deviation caused by external vibrations or environmental influences, ensuring continuous monitoring.
[0011] The first clamping part on the support plate and the second clamping part on the adjustment plate together form a clamping groove. The width of the clamping groove gradually decreases from the top of the support plate upwards, forming a dovetail structure. The dovetail groove clamps the outer edge of the monitor, generating a self-locking effect. The higher the force is applied, the tighter the clamping becomes, effectively limiting the displacement of the monitor. The design of the clamping groove is adaptable to monitor housings of different sizes, enhancing versatility.
[0012] The movement of the adjusting plate is controlled by an adjusting shaft, which passes through both the adjusting plate and the support plate and is threadedly connected to both. Rotating the adjusting shaft moves the adjusting plate along its axis, thereby adjusting the position of the second clamping part, changing the clamping force of the clamping slot, or adapting to the installation dimensions of the monitoring instrument. The cooperation between the mounting slot and the protrusion restricts the rotation of the adjusting plate, ensuring that the adjusting plate only moves linearly, improving adjustment accuracy and ease of operation. The device provides multi-degree-of-freedom adjustment capabilities, including angle and clamping position adjustments, enhancing adaptability in narrow or uneven tunnel environments. Through stable fixing and flexible adjustment, this device helps reduce errors caused by unstable installation of the monitoring instrument, improving the reliability and efficiency of tunnel safety monitoring. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of a fixed device for tunnel visibility detection in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a fixed device for tunnel visibility detection from another angle in an embodiment of this utility model; Figure 3 This is a structural schematic diagram of a fixed device for tunnel visibility detection from another angle, according to an embodiment of the present invention. Detailed Implementation
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0015] Please see Figure 1 - Figure 3 As shown, this utility model proposes a fixed device for tunnel visibility detection, which includes a base plate 11, a vertical plate 12, a rotating seat 13, a connecting shaft 14, a pressing shaft 15, a support plate 21, an adjusting plate 31, and an adjusting shaft 16. The upright plate 12 is fixedly mounted on the base plate 11, which can be fixed or installed inside the tunnel to support or fix the visibility detector to be installed. The upright plate 12 is provided with an arc-shaped groove 121. The lower part of the rotating seat 13 is connected to the upright plate 12 through a connecting shaft 14. The rotating seat 13 is connected to a pressing shaft 15, the axis of which is parallel to the axis of the connecting shaft 14. Part of the pressing shaft 15 passes through the arc-shaped groove 121, and the central angle corresponding to the arc-shaped groove 121 is 90°. With the cooperation of the pressing shaft 15 and the arc-shaped groove 121, the rotation angle between the upright plate 12 and the rotating seat 13 can be adjusted, thereby adjusting the installation angle of the visibility detector. The upright plate 12 is fixedly mounted on the base plate 11, providing a stable support foundation for the entire fixed installation device. The arc-shaped groove 121 provided on the upright plate 12 is connected to the rotating seat 13 through the connecting shaft 14, so that the rotating seat 13 can rotate relative to the upright plate 12. The axis of the clamping shaft 15 connected to the rotating seat 13 is parallel to the axis of the connecting shaft 14, and part of the clamping shaft 15 passes through the arc groove 121. The rotation angle of the rotating seat 13 can be adjusted by moving and locking the clamping shaft 15 in the arc groove 121. The central angle corresponding to the arc groove 121 is 90°, which allows the installation angle of the visibility detector to be precisely adjusted within the preset sector area, thereby adapting to different tunnel environment monitoring needs. When the clamping shaft 15 is loosened, the rotating seat 13 can rotate freely around the connecting shaft 14, thereby changing the orientation of the visibility detector; when the clamping shaft 15 is tightened, the contact surface between the clamping shaft 15 and the arc groove 121 generates friction, fixing the rotating seat 13 at the required angle position, ensuring the stability after angle adjustment, avoiding deviation caused by vibration or external force, and improving the reliability and accuracy of the visibility detector installation. A support plate 21 is fixedly installed on the top of the rotating base 13. The support plate 21 is provided with a mounting hole. The visibility detector is fixedly connected to the support plate 21 through the mounting hole. A first clamping part 22 is provided on one side of the support plate 21. A mounting groove 32 is provided on the side of the support plate 21. A protrusion 33 is provided on the side of the adjusting plate 31. The protrusion 33 is fitted into the mounting groove 32. The mounting groove 32 is recessed along the width direction of the support plate 21. The rotation of the adjusting plate 31 is restricted by the cooperation of the mounting groove 32 and the protrusion 33. A support plate 21 is fixedly mounted on the top of the rotating base 13. The support plate 21 serves as the mounting base for the visibility detector and is connected to the visibility detector through mounting holes to achieve initial fixation of the detector. A first clamping part 22 is provided on one side of the support plate 21. This clamping part works in conjunction with the second clamping part 34 on the adjusting plate 31 to form a clamping structure to constrain the position of the visibility detector. The side of the support plate 21 is provided with a mounting groove 32. The mounting groove 32 is recessed along the width direction of the support plate 21 to form a guide structure. The side of the adjusting plate 31 is provided with a corresponding protrusion 33. The protrusion 33 is fitted into the mounting groove 32. Through the cooperation of the mounting groove 32 and the protrusion 33, the adjusting plate 31 is restricted from rotating and can only move linearly along the width direction of the support plate 21. The recessed design of the mounting groove 32 allows the protrusion 33 to slide within the groove, thereby guiding the adjusting plate 31 to move along a predetermined path and preventing the adjusting plate 31 from shifting or rotating during movement. The guiding mechanism ensures that the relative position between the adjusting plate 31 and the support plate 21 remains stable, improving the accuracy of the clamping action. When the adjusting shaft 16 drives the adjusting plate 31 to move, the adjusting plate 31 can only move in a straight line, so that the first clamping part 22 and the second clamping part 34 can apply clamping force evenly, effectively preventing the visibility detector from becoming loose due to vibration or external force after installation. The adjusting plate 31 is provided with a second clamping part 34, and the adjusting shaft 16 passes through the adjusting plate 31 and the support plate 21 and is threadedly connected to the adjusting plate 31 and the support plate 21. The rotation of the adjusting shaft 16 drives the adjusting plate 31 to move along the axial direction of the adjusting shaft 16. A second clamping part 34 is provided on the adjusting plate 31. The second clamping part 34 cooperates with the first clamping part 22 provided on the support plate 21 to jointly form a clamping groove 17 for clamping the visibility detector. The adjusting shaft 16 passes through the adjusting plate 31 and the support plate 21 and is connected to the adjusting plate 31 and the support plate 21 by a threaded connection. By rotating the adjusting shaft 16, the adjusting shaft 16 drives the adjusting plate 31 to move linearly along the axial direction of the adjusting shaft 16 via thread transmission, thereby adjusting the position of the second clamping part 34 relative to the first clamping part 22. The threaded connection mechanism of the adjusting shaft 16 converts rotational motion into linear motion, enabling the adjusting plate 31 to be precisely displaced, thereby changing the width of the clamping groove 17. This allows operators to fine-tune the clamping force by simply rotating the adjusting shaft 16, accommodating visibility detectors of different sizes. The threaded connection also has a self-locking feature, ensuring that the adjusting plate 31 remains stable after movement, preventing the clamping state from loosening due to external vibration or external force, and improving the reliability and durability of clamping. The dovetail design of the clamping slot 17 further enhances the clamping effect, restricting the vertical movement of the monitor and ensuring its long-term stable operation in tunnel environments. This improves installation efficiency, reduces maintenance complexity, and enhances the overall adaptability and safety of the device. The first clamping part 22 and the second clamping part 34 surround to form a clamping groove 17 to restrict the visibility detector from moving in the vertical direction. The width of the clamping groove 17 gradually decreases in the upward direction along the top of the support plate 21, thereby forming a dovetail groove and clamping it on the outer edge of the visibility detector to restrict its movement. The first clamping part 22 and the second clamping part 34 surround and form a clamping groove 17 to restrict the visibility detector from moving vertically. The width of the clamping groove 17 gradually decreases in the upward direction along the top of the support plate 21, thereby forming a dovetail groove structure. The dovetail groove effectively restrains the displacement of the visibility detector by clamping it to the outer edge, preventing it from loosening or falling out due to vibration or external forces after installation. This ensures that the visibility detector remains in a fixed position in the tunnel environment, thereby guaranteeing the accuracy and continuity of the monitoring data. The dovetail groove design makes the width of the clamping groove 17 gradually increase from top to bottom. When the visibility detector is placed in the clamping groove 17, its outer edge contacts the clamping part. Due to the inclination angle of the groove wall, the clamping force gradually increases as the detector is inserted, forming a self-locking effect. It not only improves the stability of clamping, but also allows for the adaptation to monitoring instruments of different sizes. A firm fixation can be achieved through simple adjustments. The dovetail groove reduces stress concentration during the clamping process, extends the service life of the device, and reduces the complexity of installation and maintenance. Through the cooperation between the clamping part and the clamping groove 17, the vertical movement of the visibility detector is effectively restricted, solving the problems of insufficient clamping force or inaccurate adjustment in traditional installation devices. This design improves installation efficiency, ensures the long-term stable operation of the monitoring instrument in harsh tunnel environments, and enhances the adaptability and safety of the overall device. The dovetail groove design optimizes clamping performance, reduces monitoring errors caused by loosening, and meets the requirements for high-precision visibility detection.
[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A fixed device for detecting visibility in tunnels, characterized in that, It includes a base plate, a vertical plate, a rotating seat, a connecting shaft, a pressing shaft, a support plate, an adjusting plate, and an adjusting shaft; The upright plate is fixedly mounted on the base plate, and an arc-shaped groove is provided on the upright plate. The lower part of the rotating seat is connected to the upright plate through the connecting shaft. The pressing shaft is connected to the rotating seat, and part of the pressing shaft passes through the arc-shaped groove. The rotation angle between the upright plate and the rotating seat is adjusted by the cooperation of the pressing shaft and the arc-shaped groove. The support plate is fixedly mounted on the top of the rotating base. The support plate has a mounting hole, through which the visibility detector is fixedly connected. A first clamping part is provided on one side of the support plate, and a mounting groove is provided on the side of the support plate. A protrusion is provided on the side of the adjusting plate and is fitted into the mounting groove. A second clamping part is provided on the adjusting plate. An adjusting shaft passes through the adjusting plate and the support plate and is threadedly connected to the adjusting plate and the support plate. The rotation of the adjusting shaft drives the adjusting plate to move along the axis of the adjusting shaft. The first clamping part and the second clamping part form a clamping groove to restrict the vertical movement of the visibility detector.
2. The fixed device for tunnel visibility detection according to claim 1, characterized in that, The width of the clamping groove gradually decreases in the upward direction along the top of the support plate.
3. The fixed device for tunnel visibility detection according to claim 1, characterized in that, The mounting groove is recessed along the width direction of the support plate, and the rotation of the adjusting plate is restricted by the cooperation of the mounting groove and the protrusion.
4. The fixed device for tunnel visibility detection according to claim 1, characterized in that, The axial direction of the clamping shaft is parallel to the axial direction of the connecting shaft.
5. The fixed device for tunnel visibility detection according to claim 1, characterized in that, The central angle corresponding to the arc-shaped groove is 90°.