Deflection measuring device

Abstract

The utility model relates to the technical field of measuring instruments, and discloses a deflection measuring device which comprises a tripod and a supporting table, a plurality of U-shaped sliding frames are arranged on the surface of the supporting table, shielding cloth is arranged between the U-shaped sliding frames, the U-shaped sliding frames are connected with U-shaped rotating frames, and shielding cloth is arranged between the U-shaped rotating frames and the U-shaped sliding frames. According to the bridge deflection detector, the rainproof and sunscreen slidable cloth piece is arranged on the outer side of the bridge deflection detector, the adjustable cloth piece is arranged at the position of the lens, the cloth pieces can effectively prevent rainwater from permeating into the detector, the situation that the measurement precision is reduced due to the fact that the humidity is too large is avoided, the cloth pieces can shield sunlight, and the detection precision is improved. The problem that the interior of the detector is overheated due to high temperature is solved, and the detector can stably work under severe weather conditions. The adjustable cloth piece at the position of the lens can shield rainwater, the lens is prevented from being polluted or damaged, it can be ensured that the lens can clearly capture deflection changes, the lens is protected, and the measurement accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to a deflection measuring device. Background Art

[0002] The bridge deflection detector is an instrument used to measure the deflection of bridges. It is mainly used for the measurement of static and dynamic deflection of bridges, the completion acceptance and appraisal of bridges, and the detection of special bridges such as military floating bridges and suspension bridges. In addition, it can also be used for deformation and vibration displacement monitoring of dams and docks, or deformation and vibration displacement measurement of beams, columns, high-rise buildings, lifting machinery, drilling platforms, etc. of large-span structures. When using the bridge deflection detector for measurement, it is usually necessary to install it on a bracket and place it on the measured point of the bridge. The detector measures the deflection deformation of the bridge after loading through the built-in displacement deformation sensor and transmits the data to the terminal controller. The terminal controller will further process the data to display the maximum deflection, minimum deflection and other information of the bridge vibration. When using the bridge deflection detector, special attention should be paid to the influence of environmental factors on the measurement accuracy. For example, factors such as wind and sun exposure may interfere with the measurement results. Therefore, during the measurement process, the detector should be kept as stable as possible, and the appropriate measurement time and environment should be selected to reduce errors.

[0003] At present, the patent with announcement number CN217303874U discloses a bridge deflection detector, including a detector body, a deflection detector installed on the left side of the detector body, an ultrasonic receiver installed on the right side of the detector body, a detection display and a controller installed on the back of the detector body, a rotating disk installed on the bottom of the detector body, a support ring clamped on the outer surface of the rotating disk, a connecting block installed on the bottom of the supporting ring, a supporting plate placed under the connecting block, two supporting card plates installed on the upper surface of the supporting plate, and a rotating column installed on the side of the two supporting card plates close to each other; although the above device solves the problem of bridge deflection detection without being on the bridge, there are still problems: when the bridge deflection detector is used outdoors, it needs to remain motionless and capture signals for a long time, and is exposed to rain and sunlight at the same time. Long-term exposure to rain may cause the instrument to be damp, affecting the normal operation of its internal electronic components and sensors. Moisture may cause circuit short circuit or corrosion, thereby affecting the measurement accuracy and stability of the instrument. In addition, water infiltration into the instrument may also damage its internal structure and shorten the service life of the instrument. Long-term sunlight will increase the internal temperature of the instrument, which will affect the measurement accuracy. High temperature may change the performance of electronic components, resulting in deviations in the measured values. In addition, high temperature may accelerate the aging and damage of the internal materials of the instrument, reducing the durability of the instrument. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a deflection measuring device to at least solve one of the problems raised by the background technology, such as: improving the protection performance, ease of operation and service life of the detector, and providing a strong guarantee for bridge deflection measurement work.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a deflection measuring device, comprising a tripod and a support platform with a deflection detector installed on the top of the tripod, a plurality of U-shaped sliding frames are slidably connected to the surface of the support platform, shielding cloths are arranged between the U-shaped sliding frames, fixed columns are arranged on both sides of the bottom of the first U-shaped sliding frame near one end of the deflection detector lens, a U-shaped rotating frame is rotatably connected inside the fixed column, and a shielding cloth is arranged between the U-shaped rotating frame and the U-shaped sliding frame.

[0006] Furthermore, pulleys are arranged on the outer sides of the bottoms of both ends of the U-shaped sliding frame, and a sliding groove which is slidably connected to the outer sides of the pulleys is opened on the surface of the support platform.

[0007] Furthermore, a rotation groove is provided on the outer side of the fixed column, and the bottom of the U-shaped rotation frame is rotatably connected to the inner wall of the rotation groove.

[0008] Furthermore, a limiting plate is installed on the inner wall of the rotating groove, and the outer side of the limiting plate is fitted and connected with the outer side of the side wall of the U-shaped rotating frame.

[0009] Furthermore, the number of the limiting pieces is greater than 1, and they are arranged at equal intervals.

[0010] Furthermore, a plurality of drainage openings are provided on both sides of the support platform, and the drainage openings are connected to the chute.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model equips the outer side of the bridge deflection detector with a slidable cloth piece that is rainproof and sun-proof, and provides an adjustable cloth piece at the lens. The cloth piece can effectively prevent rain from penetrating into the detector to avoid the decrease in measurement accuracy due to excessive humidity. The cloth piece can block the sunlight to reduce the problem of overheating inside the instrument caused by high temperature, and ensure that the detector can work stably under adverse weather conditions. The adjustable cloth piece at the lens can block rain, prevent the lens from being contaminated or damaged, and ensure that the lens can clearly capture the deflection changes, which not only protects the lens but also ensures the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the support platform, U-shaped sliding frame and U-shaped rotating frame of the utility model;

[0015] Figure 3 This is a side cross-sectional schematic diagram of the support platform of the utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the U-shaped rotating frame of the utility model;

[0017] Figure 5 for Figure 4 An enlarged schematic diagram of point A.

[0018] In the figure: 1, support platform; 101, slide groove; 102, drain outlet; 2, U-shaped sliding frame; 3, U-shaped rotating frame; 4, shielding cloth; 5, fixed column; 501, rotating groove; 6, pulley; 7, limit plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] like Figures 1 to 5 As shown, a deflection measuring device comprises a tripod and a support platform 1 with a deflection detector installed on the top of the tripod, a plurality of U-shaped sliding frames 2 are slidably connected to the surface of the support platform 1, shielding cloths 4 are arranged between the U-shaped sliding frames 2, fixed columns 5 are arranged on both sides of the bottom of the first U-shaped sliding frame 2 near one end of the deflection detector lens, a U-shaped rotating frame 3 is rotatably connected inside the fixed column 5, and a shielding cloth 4 is arranged between the U-shaped rotating frame 3 and the U-shaped sliding frame 2.

[0021] like Figure 1 As shown, a deflection measuring device in the utility model is similar in structure to an existing bridge deflection detector, such as the bridge deflection detector disclosed in patent publication number CN217303874U. The main improvement of the utility model is to ensure that the detector can achieve the best working state in different environments, such as Figures 1 to 5As shown, when a deflection measuring device in the utility model is used, the tripod is used as a supporting structure to ensure the stability and firmness of the entire device. The support platform 1 is installed on the top of the tripod to provide a stable working platform for the deflection detector, which helps to ensure the accuracy of the measurement results. The design of multiple U-shaped sliding frames 2 allows the shielding cloth 4 to slide and adjust conveniently. The main function of the shielding cloth 4 is to prevent rain and sun, which can effectively protect the deflection detector from the influence of adverse weather conditions. At the same time, the adjustability of the shielding cloth 4 also ensures that the lens can clearly capture the deflection change of the bridge when needed. The fixed column 5 and the U-shaped rotating frame 3 set at the bottom of the U-shaped sliding frame 2 near one end of the lens provide additional support and adjustment functions for the shielding cloth 4. This design allows the shielding cloth 4 to fit more closely at the lens and is not easy to shake, further ensuring the accuracy of the measurement. The user can easily adjust the opening and closing degree and position of the shielding cloth 4 according to the weather conditions and measurement requirements. This convenience not only improves work efficiency, but also reduces the difficulty of operation. Whether it is rainy or sunny, it can effectively protect the deflection detector and ensure its normal operation.

[0022] like Figure 3 As shown, pulleys 6 are arranged on the outer sides of the bottoms of both ends of the U-shaped sliding frame 2, and a sliding groove 101 slidably connected to the outer sides of the pulleys 6 is opened on the surface of the support platform 1.

[0023] Specifically, through the coordination of the pulley 6 and the slide groove 101, the U-shaped sliding frame 2 can slide smoothly on the support platform 1, and the user can adjust the position and opening degree of the shielding cloth 4, which improves the convenience of operation. The existence of the slide groove 101 provides a clear moving path for the pulley 6, so that the U-shaped sliding frame 2 can maintain linear motion during movement and is not easy to deviate from the predetermined position, which helps to ensure the stability and accuracy of the shielding cloth 4 during the adjustment process, thereby ensuring the accuracy of the measurement work.

[0024] like Figures 4 to 5 As shown, a rotation groove 501 is opened on the outer side of the fixed column 5, and the bottom of the U-shaped rotating frame 3 is rotatably connected to the inner wall of the rotation groove 501.

[0025] Specifically, the rotatable connection between the bottom of the U-shaped rotating frame 3 and the inner wall of the rotating groove 501 allows the U-shaped rotating frame 3 to rotate freely on the fixed column 5, which enables the user to adjust the angle and position of the shielding cloth 4 to adapt to different weather conditions or measurement requirements. This adjustment flexibility makes the device more adaptable.

[0026] like Figure 5 As shown, a limiting plate 7 is installed on the inner wall of the rotating groove 501 , and the outer side of the limiting plate 7 is closely connected to the outer side of the side wall of the U-shaped rotating frame 3 .

[0027] Specifically, the fitting connection between the limit plate 7 and the side wall of the U-shaped rotating frame 3 effectively limits the rotation range of the U-shaped rotating frame 3 to prevent it from excessive rotation or shaking. This stability ensures the position stability of the shielding cloth 4 during the adjustment process and avoids the displacement or deformation of the shielding cloth 4 due to improper rotation, thereby ensuring the accuracy of the measurement results.

[0028] like Figure 5 As shown, the number of the limiting pieces 7 is greater than 1, and they are arranged at equal intervals.

[0029] Specifically, by setting up multiple limit plates 7, the rotation angle of the U-shaped rotating frame 3 can be divided and limited more finely. The user can rotate the U-shaped rotating frame 3 to different limit plate 7 positions as needed, thereby achieving more accurate adjustment of the shielding cloth 4. This fine adjustment capability helps to improve the accuracy and reliability of the measurement results.

[0030] like Figure 2 As shown, a plurality of drainage ports 102 are provided on both sides of the support platform 1 , and the drainage ports 102 are connected to the slide groove 101 .

[0031] Specifically, through this arrangement, when the device is used in an outdoor environment, especially on rainy days, rainwater may accumulate on the surface of the support platform 1 and enter the chute 101. The design of the drain port 102 allows the rainwater to be quickly discharged through the drain port 102, avoiding water accumulation.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deflection measuring device, comprising a tripod and a support platform (1) on the top of the tripod with a deflection detector installed, characterized in that: The support platform (1) is slidably connected to a plurality of U-shaped sliding frames (2), shielding cloths (4) are arranged between the U-shaped sliding frames (2), and fixed columns (5) are arranged on both sides of the bottom of the first U-shaped sliding frame (2) close to one end of the deflection detector lens, a U-shaped rotating frame (3) is rotatably connected inside the fixed column (5), and a shielding cloth (4) is arranged between the U-shaped rotating frame (3) and the U-shaped sliding frame (2).

2. A deflection measuring device according to claim 1, characterized in that: Pulleys (6) are arranged on the outer sides of the bottoms of both ends of the U-shaped sliding frame (2), and a sliding groove (101) which is slidably connected to the outer sides of the pulleys (6) is provided on the surface of the support platform (1).

3. A deflection measuring device according to claim 1 or 2, characterized in that: A rotation groove (501) is provided on the outer side of the fixed column (5), and the bottom of the U-shaped rotation frame (3) is rotatably connected to the inner wall of the rotation groove (501).

4. A deflection measuring device according to claim 3, characterized in that: A limiting plate (7) is installed on the inner wall of the rotating groove (501), and the outer side of the limiting plate (7) is fitted and connected to the outer side of the side wall of the U-shaped rotating frame (3).

5. A deflection measuring device according to claim 4, characterized in that: The number of the limiting pieces (7) is greater than 1, and they are arranged at equal intervals.

6. A deflection measuring device according to claim 2, 4 or 5, characterized in that: A plurality of drainage openings (102) are provided on both sides of the support platform (1), and the drainage openings (102) are connected to the slide groove (101).

7. A deflection measuring device according to claim 3, characterized in that: A plurality of drainage openings (102) are provided on both sides of the support platform (1), and the drainage openings (102) are connected to the slide groove (101).

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