Bridge deflection measuring device

Abstract

The utility model provides a bridge deflection measuring device, which comprises a mounting seat and a deflection meter, a fixed cylinder is fixedly arranged at the center of the bottom of the mounting seat, and the deflection meter is movably arranged at the bottom of the fixed cylinder through a rotating mechanism. The detection target can be mounted at the bottom of a bridge through the mounting bases and the fixing holes, the splicing rods with the corresponding number are spliced between the fixing rods and the cross rods according to needs, the arranged supporting rods can increase supporting of the splicing rods or the cross rods, and therefore the stability of the detection target is conveniently improved, and meanwhile the rotating cylinder, the fixing rods and the splicing structures are rotated, so that the detection target is more stable. The position of the detection target can be adjusted, and the detection target can be placed at different positions; through rotation adjustment of the double-layer rotating disc, the U-shaped frame and other rotating mechanisms by the servo motor, rotation adjustment of the deflection meter is facilitated, detection of a plurality of detection targets is facilitated, the influence of the bridge environment and height is avoided, the deflection of the bridge is conveniently measured, and the practicability of the device is conveniently improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge deflection measurement technology, specifically a bridge deflection measurement device. Background Technology

[0002] To verify the working performance of the bridge structure and whether the construction meets the design requirements, and to ensure the reliability of the bridge, it is necessary to conduct deflection testing on the bridge.

[0003] There are two main methods for deflection detection using existing technologies. One method is to set up a measuring device between the beam and the ground at a location where deflection is likely to occur. However, this is not convenient when there is water at the bottom of the bridge. The other method is to set up a plumb bob on the bottom wall of the bridge and install a deflectometer below the plumb bob. However, when the bridge is high, the length of the plumb bob will have an adverse effect on the test results, reducing the practicality of the bridge deflection measuring device.

[0004] Therefore, this utility model provides a bridge deflection measuring device. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a bridge deflection measuring device to solve the problems mentioned in the background. This invention can be installed at the bottom of a bridge through a mounting base and fixing holes. A corresponding number of splicing rods can be connected between the fixing rod and the crossbar as needed. Simultaneously, the rotation of the rotating cylinder, fixing rod, and splicing structure can adjust the position of the detection target, placing it in different positions. By adjusting the rotation of the rotating mechanism and the deflectometer, the position of the detection target can be easily measured, unaffected by the bridge environment and height, thus facilitating the measurement of bridge deflection and improving the practicality of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A bridge deflection measuring device includes a mounting base and a deflectometer. A fixed cylinder is fixedly installed at the bottom center of the mounting base. The deflectometer is movably mounted on the bottom of the fixed cylinder via a rotating mechanism. The rotating mechanism includes a double-layer turntable, a servo motor, a U-shaped frame, and an adjustment mechanism. The double-layer turntable is rotatably mounted on the bottom end of the fixed cylinder. The U-shaped frame is fixedly mounted on the bottom of the double-layer turntable. The deflectometer is movably mounted between the two ends of the U-shaped frame via rotating shafts on both sides. A rotating cylinder is rotatably mounted on the outer side of the fixed cylinder. A fixed rod is fixedly installed on the outer wall of the rotating cylinder. A detection target is mounted on one end of the fixed rod via a splicing mechanism. The splicing mechanism includes a fixed sleeve, a splicing rod, and a crossbar. The fixed sleeve is fixedly mounted on one end of the splicing rod and the crossbar. A sliding rod is fixedly installed on the top of the detection target. The detection target is located on one side of the deflectometer.

[0007] Furthermore, the mounting base has four fixing holes on its inner outer side, and a through hole communicating with the fixing cylinder is provided at the center of the mounting base. The servo motor is fixedly installed inside the fixing cylinder.

[0008] Furthermore, the output shaft of the servo motor is fixedly connected to the center of the top of the double-layer turntable, a bubble level is fixedly installed on the top of one end of the deflectometer, and the adjustment mechanism is symmetrically arranged on both sides of the bottom of the double-layer turntable corresponding to the U-shaped frame.

[0009] Furthermore, the adjustment mechanism includes a fixed tube and an adjustment screw. The fixed tube is symmetrically fixed on both sides of the bottom of the double-layer turntable, and the top end of the adjustment screw is screwed into the inside of the fixed tube.

[0010] Furthermore, a disc is fixedly installed at the bottom end of the adjusting screw, and a rubber pad is fixedly installed at the bottom of the disc, with the rubber pad in close contact with the top two sides of the deflectometer.

[0011] Furthermore, one end of the fixing rod is inserted into the inside of the fixing sleeve, and the other end of the splicing rod is inserted into the inside of the fixing sleeve. Bolts are screwed between the fixing rod and the fixing sleeve, and between the splicing rod and the fixing sleeve.

[0012] Furthermore, the slide bar has a "T" shape in side view, and the slide bar is slidably installed inside the other end of the crossbar by limiting the detection target. A spherical protrusion is fixedly provided at the top of the slide bar.

[0013] Furthermore, a spring is fixedly installed between the outer side of the upper end of the slide rod and the crossbar, and support rods are symmetrically fixed on both sides of the bottom end of the rotating cylinder. The top of the support rod is supported at the bottom of the crossbar and the splicing rod. A fastening bolt is screwed to the bottom end of the rotating cylinder, and the inner end of the fastening bolt is in close contact with the outer wall of the fixed cylinder.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a bridge deflection measuring device that can be installed at the bottom of a bridge via a mounting base and fixing holes. A corresponding number of splicing rods can be spliced ​​between the fixed rod and the crossbar as needed. The fixed rod and crossbar are fixedly connected to the splicing rods via fixing sleeves and bolts. The provided support rods increase support for the splicing rods or crossbars, thereby improving the stability of the detection target. Simultaneously, by rotating the rotating cylinder, fixed rod, and splicing structure, the position of the detection target can be adjusted, allowing the target to be placed in different positions for deflection measurement. The rotation adjustment of the double-layer turntable, U-shaped frame, and other rotating mechanisms via a servo motor facilitates the rotation adjustment of the deflection meter, enabling the detection of multiple targets without being affected by the bridge environment or height, thus improving the practicality of the device. The included bubble level, fixing tube, and adjusting screw allow for adjustment of the deflection meter's levelness, improving its stability and facilitating the measurement of bridge deflection. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a bridge deflection measuring device according to the present invention;

[0016] Figure 2 This is a front cross-sectional view of a bridge deflection measuring device according to the present invention;

[0017] Figure 3 This utility model relates to a bridge deflection measuring device. Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a cross-sectional view of a portion of the structure of a bridge deflection measuring device according to this utility model;

[0019] Figure 5 This is a structural diagram of the deflection meter installation of a bridge deflection measuring device according to the present invention;

[0020] Figure 6 This is a diagram showing the splicing structure of a bridge deflection measuring device according to this utility model;

[0021] In the diagram: 1. Mounting base; 2. Fixing hole; 3. Fixing cylinder; 4. Rotating cylinder; 5. Double-layer turntable; 6. U-shaped frame; 7. Deflectometer; 8. Adjustment mechanism; 9. Fixing rod; 10. Splicing rod; 11. Fixing sleeve; 12. Crossbar; 13. Bolt; 14. Sliding rod; 15. Detection target; 16. Spring; 17. Support rod; 18. Servo motor; 19. Fixing tube; 20. Adjusting screw. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 6 This utility model provides a technical solution: a bridge deflection measuring device, including a mounting base 1 and a deflectometer 7. A fixed cylinder 3 is fixedly installed at the bottom center of the mounting base 1. The deflectometer 7 is movably installed at the bottom of the fixed cylinder 3 via a rotating mechanism. The rotating mechanism includes a double-layer turntable 5, a servo motor 18, a U-shaped frame 6, and an adjusting mechanism 8. The double-layer turntable 5 is rotatably mounted at the bottom end of the fixed cylinder 3. The U-shaped frame 6 is fixedly installed at the bottom of the double-layer turntable 5. The deflectometer 7 is movably mounted between the two ends of the U-shaped frame 6 via rotating shafts on both sides. A rotating cylinder 4 is rotatably mounted on the outer side of the fixed cylinder 3. A fixing rod 9 is fixedly installed on the outer wall of the rotating cylinder 4. A detection target 15 is installed at one end via a splicing mechanism. The splicing mechanism includes a fixed sleeve 11, a splicing rod 10, and a crossbar 12. The fixed sleeve 11 is fixedly installed at one end of the splicing rod 10 and the crossbar 12. A sliding rod 14 is fixedly installed at the top of the detection target 15. The detection target 15 is set on one side of the deflectometer 7. By splicing the splicing rod 10, the rotating cylinder 4 drives the detection target 15 through the fixed rod 9, the splicing rod 10, and the crossbar 12, which makes it convenient to set the detection target 15 at different detection positions. With the cooperation of the deflectometer 7 and the detection target 15, it is convenient to measure the deflection of the bridge, regardless of the bridge environment and height, thus improving the practicality of the device.

[0024] In this embodiment, four fixing holes 2 are provided on the inner and outer sides of the mounting base 1, and a through hole communicating with the fixing cylinder 3 is provided at the center of the inner side of the mounting base 1. The servo motor 18 is fixedly installed inside the fixing cylinder 3. The mounting base 1 is conveniently fixed to the bottom of the bridge through the fixing holes 2, and the through hole facilitates the installation of cables and their electrical connection with the servo motor 18.

[0025] In this embodiment, the output shaft of the servo motor 18 is fixedly connected to the center of the top of the double-layer turntable 5. A bubble level is fixedly installed on the top of one end of the deflectometer 7. The adjustment mechanism 8 is symmetrically arranged on both sides of the bottom of the double-layer turntable 5 corresponding to the U-shaped frame 6. The adjustment mechanism 8 includes a fixed tube 19 and an adjusting screw 20. The fixed tube 19 is symmetrically fixed on both sides of the bottom of the double-layer turntable 5. The top end of the adjusting screw 20 is screwed into the inside of the fixed tube 19. A disc is fixedly installed at the bottom end of the adjusting screw 20. A rubber pad is fixedly installed at the bottom of the disc, and the rubber pad is in close contact with the top two sides of the deflector 7. By rotating the adjusting screw 20, the deflector 7 can be squeezed and adjusted. In conjunction with the bubble level, the deflector 7 can be easily adjusted to be level. The adjustment screw 20 and the rubber pad squeeze and position the two ends of the deflector 7, which can improve the stability of the deflector 7. The servo motor 18 and the double-layer turntable 5 facilitate the rotation adjustment of the U-shaped frame 6 and the deflector 7, and facilitate the detection of different detection targets 15.

[0026] In this embodiment, one end of the fixing rod 9 is inserted into the inside of the fixing sleeve 11, and the other end of the splicing rod 10 is inserted into the inside of the fixing sleeve 11. Bolts 13 are screwed between the fixing rod 9 and the fixing sleeve 11, and between the splicing rod 10 and the fixing sleeve 11. The slide rod 14 has a "T" shape in side view. The slide rod 14 is slidably installed inside the other end of the crossbar 12 by means of the detection target 15. A spherical protrusion is fixedly provided at the top of the slide rod 14. A spring 16 is fixedly provided between the outer side of the upper end of the slide rod 14 and the crossbar 12. Support rods 17 are symmetrically fixed on both sides of the bottom end of the rotating cylinder 4. The top of the support rod 17 is supported at the bottom of the crossbar 12 and the splicing rod 10. The bottom of the rotating cylinder 4 is screwed with a fastening bolt. The inner end of the fastening bolt is in close contact with the outer wall of the fixed cylinder 3. The fixed rod 9 and the fixed sleeve 11 are connected by insertion, and the splicing rod 10 and the fixed sleeve 11 are connected by insertion, and the fixed cylinder 10 is fixed by bolt 13. This facilitates the selection and adjustment of the position of the sliding rod 14 and the detection target 15. The spherical protrusion facilitates the contact of the sliding rod 14 with the bottom of the bridge. The sliding rod 14 and the spherical protrusion can slide downward when the bottom of the bridge deforms, thereby changing the height of the detection target 15, which facilitates subsequent deflection measurement.

[0027] When using this bridge deflection measuring device, a reference point is set at the bottom of the bridge to be tested. A strong adhesive is applied to the reference point and the mounting base 1 is then bonded and fixed. A fixing bolt is screwed into the fixing hole 2, with one end of the bolt inserted into the strong adhesive. After the adhesive solidifies, it facilitates the fixing of the mounting base 1 and ensures its stability. The servo motor 18 is electrically connected to an external power supply via a cable and controlled by a matching circuit. The adjusting screws 20 on both sides are loosened to adjust the... The rod 20 is screwed upward inside the fixed tube 19. The deflector 7 is adjusted to level using the bubble level, and the adjusting screws 20 on both sides are rotated in the opposite direction so that the bottom ends of the adjusting screws 20 contact and press against the top of the deflector 7, thus improving the stability of the deflector 7. As needed, multiple splicing rods 10 are spliced ​​on one side of the fixed rod 9. The splicing rods 10 are interlocked by fixing sleeves 11 and fixed with bolts 13. The fixed rod 9 is inserted into the fixing sleeve 11 on one of the splicing rods 10 and fixed with bolts 13. To fix it, one end of the crossbar 12 is fixed to the splicing rod 10 by inserting it into the fixing sleeve 11. After installation, the spherical protrusion at the top of the slide rod 14 is in contact with the bottom wall of the bridge. Loosen the fastening bolts and rotate the rotating cylinder 4. The rotating cylinder 4 drives the fixing rod 9, the splicing mechanism, the support rod 17, the slide rod 14, and the detection target 15 to rotate around the fixing cylinder 3. Adjust the position of the detection target 15 and start the servo motor 18 through the matching circuit. The servo motor 18 drives the U-shaped frame 6 to rotate through the double-layer turntable 5. The U-shaped frame 6 drives the deflection meter 7 to rotate. The deflectometer 7 is aligned with the target 15 and its position is measured. Under bridge load, the bridge deforms and bends downwards, pressing the slide bar 14 through the spherical protrusion. The slide bar 14 slides inside the crossbar 12 and moves the target 15 downwards. The position of the target 15 is measured by the deflectometer 7, and the displacement change of the target 15 is obtained. The model of the deflectometer 7 is FS-GDND50. The maximum and minimum deflections of the bridge vibration are calculated and displayed by the software of the deflectometer 7.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bridge deflection measuring device, comprising a mounting base (1) and a deflectometer (7), characterized in that, A fixed cylinder (3) is fixedly installed at the bottom center of the mounting base (1). The deflectometer (7) is movably installed at the bottom of the fixed cylinder (3) via a rotating mechanism. The rotating mechanism includes a double-layer turntable (5), a servo motor (18), a U-shaped frame (6), and an adjustment mechanism (8). The double-layer turntable (5) is rotatably mounted at the bottom end of the fixed cylinder (3). The U-shaped frame (6) is fixedly installed at the bottom of the double-layer turntable (5). The deflectometer (7) is movably installed between the two ends of the U-shaped frame (6) via rotating shafts on both sides. A rotating cylinder (4) is installed on the outer side of the cylinder (3) for limiting rotation. A fixed rod (9) is fixedly installed on the outer wall of the rotating cylinder (4). A detection target (15) is installed at one end of the fixed rod (9) through a splicing mechanism. The splicing mechanism includes a fixed sleeve (11), a splicing rod (10), and a crossbar (12). The fixed sleeve (11) is fixedly installed at one end of the splicing rod (10) and the crossbar (12). A sliding rod (14) is fixedly installed at the top of the detection target (15). The detection target (15) is installed on one side of the deflectometer (7).

2. The bridge deflection measuring device according to claim 1, characterized in that: The mounting base (1) has four fixing holes (2) on its inner outer side. The mounting base (1) has a through hole at its inner center that communicates with the fixing cylinder (3). The servo motor (18) is fixedly installed inside the fixing cylinder (3).

3. The bridge deflection measuring device according to claim 1, characterized in that: The output shaft of the servo motor (18) is fixedly connected to the top center of the double-layer turntable (5). A bubble level is fixedly installed on the top of one end of the deflectometer (7). The adjustment mechanism (8) is symmetrically arranged on both sides of the bottom of the double-layer turntable (5) corresponding to the U-shaped frame (6).

4. A bridge deflection measuring device according to claim 3, characterized in that: The adjustment mechanism (8) includes a fixed tube (19) and an adjustment screw (20). The fixed tube (19) is symmetrically fixed on both sides of the bottom of the double-layer turntable (5), and the top end of the adjustment screw (20) is screwed into the inside of the fixed tube (19).

5. A bridge deflection measuring device according to claim 4, characterized in that: A disc is fixedly installed at the bottom of the adjusting screw (20), and a rubber pad is fixedly installed at the bottom of the disc. The rubber pad is in contact with the top two sides of the deflectometer (7).

6. A bridge deflection measuring device according to claim 1, characterized in that: One end of the fixing rod (9) is inserted into the inside of the fixing sleeve (11), and the other end of the splicing rod (10) is inserted into the inside of the fixing sleeve (11). Bolts (13) are screwed between the fixing rod (9) and the fixing sleeve (11) and between the splicing rod (10) and the fixing sleeve (11).

7. A bridge deflection measuring device according to claim 6, characterized in that: The slide bar (14) has a "T" shape in side view. The slide bar (14) is slidably installed inside the other end of the crossbar (12) by means of the detection target (15). A spherical protrusion is fixedly provided at the top of the slide bar (14).

8. A bridge deflection measuring device according to claim 7, characterized in that: A spring (16) is fixedly installed between the outer side of the upper end of the slide bar (14) and the crossbar (12). Support rods (17) are symmetrically fixed on both sides of the bottom end of the rotating cylinder (4). The top of the support rod (17) is supported at the bottom of the crossbar (12) and the splicing rod (10). A fastening bolt is screwed to the bottom end of the rotating cylinder (4). The inner end of the fastening bolt is in contact with the outer wall of the fixed cylinder (3).

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