Auxiliary deceleration strip for bridge body safety vibration detection

Abstract

The invention relates to the field of bridge deck detection in bridge engineering, and discloses an auxiliary speed bump for bridge body safety vibration detection, which comprises a main rod and an auxiliary rod, and a plurality of third placers, second placers and first placers with two through holes inside are arranged between the outer parts of the main rod and the auxiliary rod. Adjusting mechanisms are installed at the left ends and the right ends of the main rod and the auxiliary rod correspondingly, and pressing mechanisms are installed at the right ends of the main rod and the auxiliary rod correspondingly. The main rod comprises a main limiting stopper, a first main supporting rod is fixedly connected to the outer portion of the main limiting stopper, and a second main supporting rod is arranged in the first main supporting rod. By means of the sleeving structure of the multi-stage supporting rods, the second main supporting rod and the third main supporting rod can stretch out and draw back into the upper-stage supporting rod. According to the design, on one hand, the device can be contracted during transportation, and the storage space is effectively reduced; and on the other hand, the telescopic length can be adjusted according to axle distances of different heavy trucks during working, and the position of the load applied to the surface of the placer can be adjusted conveniently.

Description

Technical Field

[0001] This invention relates to the field of bridge deck inspection in bridge engineering, specifically an auxiliary speed bump for detecting bridge safety vibrations. Background Technology

[0002] To accurately detect the vibration state of bridges, heavy trucks are typically used to rapidly drive over speed bumps on the bridge deck to induce vibrations, thereby obtaining vibration data to analyze and determine the bridge's safety for service. In current testing operations, workers often use non-professional tools such as bricks and wooden blocks as temporary speed bumps. Because these temporary substitutes lack a fixed structure and have poor stability, the enormous impact of a heavy truck driving over them can easily cause these tools to eject from the sides of the tires, leading to accidental injuries. While using existing conventional speed bumps improves stability, these are often one-piece or fixedly assembled structures, requiring significant storage space during transport and making them inconvenient to carry. Furthermore, their fixed length prevents flexible adjustment based on the wheel axle spacing of different heavy-duty truck models, making it difficult to meet the requirements for precisely applying excitation loads. In addition, existing speed bumps typically require bolts to be fixed to the road surface, a method that causes irreversible damage to the bridge structure and road surface, hindering bridge maintenance. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an auxiliary speed bump for bridge vibration testing, which solves the problems of poor safety, inconvenient transportation and storage, inability to adjust the length to suit different vehicle models, and road surface damage during installation of existing speed bumps for bridge vibration testing.

[0004] To achieve the above objectives, the present invention provides the following technical solution: An auxiliary speed bump for bridge safety vibration detection includes a main rod and a secondary rod. Multiple No. 3, No. 2, and No. 1 placers with two through holes inside are installed between the main rod and the secondary rod. Adjustment mechanisms are installed at both the left and right ends of the main rod and the secondary rod, and a clamping mechanism is installed at the right end of both the main rod and the secondary rod. The main rod includes a main limiter, a first main support rod is fixedly connected to the outside of the main limiter, a second main support rod is provided inside the first main support rod, and a third main support rod is provided inside the second main support rod. The auxiliary rod includes an auxiliary limiter, with a first auxiliary support rod fixedly connected to the outside of the auxiliary limiter. A second auxiliary support rod is installed inside the first auxiliary support rod, and a third auxiliary support rod is installed inside the second auxiliary support rod. Bolt holes are provided inside the main limiter, the third main support rod, the secondary limiter, and the third secondary support rod.

[0005] Preferably, the through hole size of the third placement device corresponds to the outer dimensions of the third main support rod and the third auxiliary support rod, the through hole size of the second placement device corresponds to the outer dimensions of the second main support rod and the second auxiliary support rod, and the through hole size of the first placement device corresponds to the outer dimensions of the first main support rod and the first auxiliary support rod.

[0006] Preferably, the second main support rod extends and retracts inside the first main support rod, the third main support rod extends and retracts inside the second main support rod, the second auxiliary support rod extends and retracts inside the first auxiliary support rod, and the third auxiliary support rod extends and retracts inside the second auxiliary support rod.

[0007] Preferably, the third placer, the second placer, and the first placer are distributed in a straight line at equal intervals.

[0008] Preferably, the adjusting mechanism includes a first bolt, which is threaded into the bolt hole. A washer is provided on the outside of the first bolt. A support plate is threaded to the lower side of the first bolt. A spring is provided at the bottom end of the first bolt. A base is fixedly connected to the bottom end of the spring. Two buffer cylinder cores are fixedly connected to the bottom of the support plate. A buffer cylinder outer cylinder body is slidably connected to the outside of the buffer cylinder core. An annular sealing ring and a high-density rubber pad are provided on the inner wall of the buffer cylinder outer cylinder body. The bottom end of the buffer cylinder outer cylinder body is fixedly connected to the top of the base.

[0009] Preferably, a fixed outer ring is fixedly connected to the top of the base, and the fixed outer ring is disposed on the lower side of the spring.

[0010] Preferably, the washer is installed on the top of the bolt hole, the buffer cylinder core is slidably connected to the inside of the annular sealing ring, and the bottom end of the buffer cylinder core and the top of the high-density rubber pad abut against each other.

[0011] Preferably, the spring is installed between the outer cylinders of the two buffer cylinders.

[0012] Preferably, the clamping mechanism includes two limiting rings and multiple fixing rods. The fixing rods are respectively fixedly connected to the outside of the main limiter and the auxiliary limiter. A reaction force platform is fixedly connected between the right ends of the multiple fixing rods on the same side. A second bolt is rotatably connected inside the reaction force platform. A sliding plate is threadedly connected to the middle of the second bolt. Multiple pressing rods are fixedly connected to the left side of the sliding plate. The pressing rods abut against the right side of the rightmost first placement device. The limiting rings are respectively fixedly connected to the right sides of the main limiter and the auxiliary limiter. The left side of the second bolt is rotatably connected to the inside of the limiting ring.

[0013] Preferably, the left end of the second bolt is rotatably connected to the right side of the main limiter or the secondary limiter, and the inside of the slide plate is slidably connected to the outside of the fixed rod.

[0014] This invention provides an auxiliary speed bump for bridge safety vibration detection. It has the following advantages: 1. This invention utilizes a multi-stage strut sleeve structure, allowing the second and third main and auxiliary struts to extend and retract into the upper-level struts respectively. This design enables the device to retract during transportation, effectively reducing storage space; simultaneously, during operation, the extension length can be adjusted according to the wheel axle spacing of different heavy-duty trucks, facilitating the adjustment of the load applied to the surface of the device.

[0015] 2. This invention, through the setting of main and auxiliary limiters, satisfies the limiting requirements of various placement devices with the same external dimensions but different internal hole dimensions. With the help of the spring and nut in the adjustment mechanism, the overall height of the device off the ground can be adjusted. At the same time, the connection design between the limiter and the buffer cylinder not only uses the outer cylinder of the buffer cylinder to restrict the direction of movement and prevent misalignment under force, but also transmits and buffers the load on the placement device, playing a shock absorption and protection role for the limiter and preventing it from breaking due to excessive force.

[0016] 3. This invention, through the setting of a clamping mechanism, utilizes a reaction force platform to support bolts, driving a sliding plate to move a pressure rod to axially compress the series-connected placement units No. 1, No. 2, and No. 3. This structure effectively eliminates installation gaps between the placement units, making them fit tightly into a whole, avoiding vibration, wear, or abnormal noise caused by a single loose placement unit when a vehicle passes by. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the main body of the present invention; Figure 2 This is a side view of the main body of the present invention; Figure 3 This is a schematic diagram of the main rod and auxiliary rod of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the placement device of the present invention; Figure 6 This is a schematic diagram of the adjustment mechanism of the present invention; Figure 7 This is a partial cross-sectional view of the adjustment mechanism of the present invention.

[0018] The components include: 1. Main rod; 2. Secondary rod; 3. Adjustment mechanism; 4. Clamping mechanism; 5. Bolt hole; 6. Placer No. 3; 7. Placer No. 2; 8. Placer No. 1; 101. Main limiter; 102. Main support rod No. 1; 103. Main support rod No. 2; 104. Main support rod No. 3; 201. Secondary limiter; 202. Secondary support rod No. 1; 203. Secondary support rod No. 2; 204. Secondary support rod No. 3; 30 1. First bolt; 302. Washer; 303. Support plate; 304. Spring; 305. Fixing outer ring; 306. Base; 307. Buffer cylinder core; 308. Buffer cylinder outer cylinder; 309. Annular sealing ring; 310. High-density rubber pad; 401. Fixing rod; 402. Reaction force platform; 403. Second bolt; 404. Limiting ring; 405. Slide plate; 406. Pressure bar. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see the appendix Figure 1 - Appendix Figure 5 This invention provides an auxiliary speed bump for bridge safety vibration detection, comprising a main rod 1 and a secondary rod 2. Multiple placement devices 6 (number 3), 7 (number 2), and 8 (number 1), each with two through holes, are installed between the main rod 1 and the secondary rod 2. Adjustment mechanisms 3 are installed at both ends of the main rod 1 and the secondary rod 2, and clamping mechanisms 4 are installed at the right end of both the main rod 1 and the secondary rod 2. The main rod 1 and the secondary rod 2 are used to thread the multiple placement devices 6 (number 3), 7 (number 2), and 8 (number 1) together to form a single unit. The adjustment mechanisms 3 are used to adjust the height of this unit off the ground, and the clamping mechanisms 4 are used to tightly fit the multiple placement devices 6 (number 3), 7 (number 2), and 8 (number 1) together to prevent wear or abnormal noise caused by gaps in the individual placement devices. The main rod 1 includes a main limiter 101. A first main support rod 102 is fixedly connected to the outside of the main limiter 101. A second main support rod 103 is installed inside the first main support rod 102. A third main support rod 104 is installed inside the second main support rod 103. The secondary rod 2 includes a secondary limiter 201. A first secondary support rod 202 is fixedly connected to the outside of the secondary limiter 201. A second secondary support rod 203 is set inside the first secondary support rod 202. A third secondary support rod 204 is set inside the second secondary support rod 203. The setting of the main limiter 101 and the secondary limiter 201 is adapted to meet the limiting requirements of three types of placers with the same external dimensions but different internal hole dimensions. The main limiter 101, the third main support rod 104, the secondary limiter 201 and the third secondary support rod 204 are all provided with bolt holes 5, which are used to facilitate the installation of the adjustment mechanism 3.

[0021] The second main support rod 103 extends and retracts inside the first main support rod 102, the third main support rod 104 extends and retracts inside the second main support rod 103, the second auxiliary support rod 203 extends and retracts inside the first auxiliary support rod 202, and the third auxiliary support rod 204 extends and retracts inside the second auxiliary support rod 203. This allows for extension and retraction during use, reducing storage space during transportation. It also facilitates adjustment of the load applied to the outer surface of the placement device according to the wheel axle spacing of different types of heavy trucks.

[0022] Placer No. 3 (6), Placer No. 2 (7), and Placer No. 1 (8) are arranged in a straight line at equal intervals, making the surface of the placers uniform and without gaps.

[0023] Please see the appendix Figure 6 and attached Figure 7 The adjusting mechanism 3 includes a first bolt 301, which is threaded into the bolt hole 5. A washer 302 is provided on the outside of the first bolt 301. A support plate 303 is threaded to the lower side of the first bolt 301. A spring 304 is provided at the bottom of the first bolt 301. A base 306 is fixedly connected to the bottom of the spring 304. Two buffer cylinder cores 307 are fixedly connected to the bottom of the support plate 303. A buffer cylinder outer cylinder 308 is slidably connected to the outside of the buffer cylinder core 307. An annular sealing ring 309 and a high-density rubber pad 310 are provided on the inner wall of the buffer cylinder outer cylinder 308. The bottom of the buffer cylinder outer cylinder 308 is fixedly connected to the top of the base 306. The first bolt 301 is used to adjust the height of the placement device from the ground and can also compress the spring 304 and the pad. Ring 302 is used to prevent the first bolt 301 from directly causing wear on the surface of the part. Support plate 303 is used to support the pressure transmitted by the first bolt 301. Spring 304 is used to push support plate 303 to reset, thereby offsetting the pressure and preventing spring 304 from falling off. Base 306 is used to directly contact the ground to keep the whole device stable. Buffer cylinder core 307 is used to cooperate with buffer cylinder outer cylinder 308 to restrict the movement direction of support plate 303, so that support plate 303 can only move up and down in a straight line. Annular sealing ring 309 is used to seal between buffer cylinder core 307 and buffer cylinder outer cylinder 308 to prevent rainwater or dust from entering buffer cylinder outer cylinder 308. High-density rubber pad 310 and spring work together to buffer heavy truck tires when passing through this device.

[0024] A fixing outer ring 305 is fixedly connected to the top of the base 306. The fixing outer ring 305 is located on the lower side of the spring 304 and is used to limit the installation position of the spring 304.

[0025] Spring 304 is installed between the outer cylinders 308 of the two buffer cylinders to keep the device stable.

[0026] Please see the appendix Figure 4 The clamping mechanism 4 includes two limiting rings 404 and multiple fixing rods 401. The fixing rods 401 are fixedly connected to the outside of the main limiter 101 and the auxiliary limiter 201, respectively. A reaction force platform 402 is fixedly connected between the right ends of the multiple fixing rods 401 on the same side. A second bolt 403 is rotatably connected inside the reaction force platform 402. A sliding plate 405 is threadedly connected to the middle of the second bolt 403. Multiple pressing rods 406 are fixedly connected to the left side of the sliding plate 405. The pressing rods 406 abut against the right side of the rightmost placement device 8. The limiting rings 404 are fixedly connected to... On the right side of the main limiter 101 and the secondary limiter 201, the second bolt 403 is rotatably connected to the inner side of the limit ring 404. The fixing rod 401 is used to support the reaction force platform 402, the reaction force platform 402 is used to support the second bolt 403, the second bolt 403 is used to adjust the left and right movement of the slide plate 405, the slide plate 405 is used to drive the pressure rod 406 to move synchronously, the pressure rod 406 is used to push the rightmost first placer 8, so that the placers move and squeeze to the left, so that the placers fit tightly together, and the limit ring 404 is used to keep the second bolt 403 stable.

[0027] The left end of the second bolt 403 is rotatably connected to the right side of the main limiter 101 or the secondary limiter 201, so that the second bolt 403 remains stable. The slide plate 405 is slidably connected to the outside of the fixed rod 401, which restricts the movement direction of the slide plate 405.

[0028] Working principle: When using this device, first pull out the second main support rod 103 and the second auxiliary support rod 203 from inside the first main support rod 102 and the first auxiliary support rod 202. Similarly, pull out the third main support rod 104 and the third auxiliary support rod 204. Then, insert the placer into the end of the third main support rod 104 and the third auxiliary support rod 204 in the order of the first placer 8, the second placer 7, and the third placer 6. At the same time, the length of the main rod 1 and the auxiliary rod 2 can be adjusted according to the width of the vehicle, which can reduce the storage space during transportation.

[0029] After all parts are inserted, start tightening the second bolt 403. With the support of the limit ring 404, the slide plate 405 moves closer to the secondary limiter 201 along the fixed rod 401. At the same time, the pressure rod 406 begins to squeeze the first placeholder 8, causing the first placeholder 8 to move towards the third main support rod 104, squeezing the second placeholder 7 and the third placeholder 6, so that all placeholders are tightly pressed together to avoid gaps, thereby avoiding vibration and wear during use. Finally, screw the first bolt 301 into the bolt hole 5 and into the support plate 303. Then, place the device flat on the ground and continue to tighten the first bolt 301 to compress the spring 304, adjusting the distance between the placeholder and the ground until the placeholder contacts the ground. At this point, it can be used. When a vehicle passes over the placeholder, the support plate 303 will actively compress the spring 304 under the limit of the buffer cylinder core 307, and work with the high-density rubber pad 310 to provide cushioning.

Claims

1. An auxiliary speed bump for bridge safety vibration detection, characterized in that, Includes a main rod (1) and a secondary rod (2). Multiple No. 3 placers (6), No. 2 placers (7), and No. 1 placers (8) with two through holes inside are installed between the main rod (1) and the secondary rod (2). Adjustment mechanisms (3) are installed at both the left and right ends of the main rod (1) and the secondary rod (2). A clamping mechanism (4) is installed at the right end of both the main rod (1) and the secondary rod (2). The main rod (1) includes a main limiter (101), and a first main support rod (102) is fixedly connected to the outside of the main limiter (101). A second main support rod (103) is provided inside the first main support rod (102), and a third main support rod (104) is provided inside the second main support rod (103). The secondary rod (2) includes a secondary limiter (201), and a first secondary support rod (202) is fixedly connected to the outside of the secondary limiter (201). A second secondary support rod (203) is provided inside the first secondary support rod (202), and a third secondary support rod (204) is provided inside the second secondary support rod (203). Bolt holes (5) are provided inside the main limiter (101), the third main support rod (104), the secondary limiter (201), and the third secondary support rod (204).

2. The auxiliary speed bump for bridge safety vibration detection according to claim 1, characterized in that, The through hole size of the third placer (6) corresponds to the outer dimensions of the third main support rod (104) and the third auxiliary support rod (204), the through hole size of the second placer (7) corresponds to the outer dimensions of the second main support rod (103) and the second auxiliary support rod (203), and the through hole size of the first placer (8) corresponds to the outer dimensions of the first main support rod (102) and the first auxiliary support rod (202).

3. The auxiliary speed bump for bridge safety vibration detection according to claim 1, characterized in that, The second main support rod (103) extends and retracts inside the first main support rod (102), the third main support rod (104) extends and retracts inside the second main support rod (103), the second auxiliary support rod (203) extends and retracts inside the first auxiliary support rod (202), and the third auxiliary support rod (204) extends and retracts inside the second auxiliary support rod (203).

4. The auxiliary speed bump for bridge safety vibration detection according to claim 1, characterized in that, The No. 3 placer (6), No. 2 placer (7), and No. 1 placer (8) are distributed in a straight line at equal intervals.

5. An auxiliary speed bump for bridge safety vibration detection according to claim 1, characterized in that, The adjusting mechanism (3) includes a first bolt (301), which is threaded into the bolt hole (5). A washer (302) is provided on the outside of the first bolt (301). A support plate (303) is threaded on the lower side of the first bolt (301). A spring (304) is provided at the bottom of the first bolt (301). A base (306) is fixedly connected to the bottom of the spring (304). Two buffer cylinder cores (307) are fixedly connected to the bottom of the support plate (303). A buffer cylinder outer cylinder (308) is slidably connected to the outside of the buffer cylinder core (307). An annular sealing ring (309) and a high-density rubber pad (310) are provided on the inner wall of the buffer cylinder outer cylinder (308). The bottom of the buffer cylinder outer cylinder (308) is fixedly connected to the top of the base (306).

6. An auxiliary speed bump for bridge safety vibration detection according to claim 5, characterized in that, The base (306) is fixedly connected to a fixed outer ring (305) on its top, and the fixed outer ring (305) is located on the lower side of the spring (304).

7. An auxiliary speed bump for bridge safety vibration detection according to claim 5, characterized in that, The washer (302) is installed on the top of the bolt hole (5), the buffer cylinder core (307) is externally slidably connected to the inside of the annular sealing ring (309), and the bottom end of the buffer cylinder core (307) and the top of the high-density rubber pad (310) abut against each other.

8. An auxiliary speed bump for bridge safety vibration detection according to claim 5, characterized in that, The spring (304) is installed between the outer cylinders (308) of the two buffer cylinders.

9. An auxiliary speed bump for bridge safety vibration detection according to claim 1, characterized in that, The clamping mechanism (4) includes two limiting rings (404) and multiple fixing rods (401). The fixing rods (401) are fixedly connected to the outside of the main limiter (101) and the auxiliary limiter (201) respectively. A reaction force platform (402) is fixedly connected between the right ends of the multiple fixing rods (401) on the same side. A second bolt (403) is rotatably connected inside the reaction force platform (402). A sliding plate (405) is threadedly connected to the middle of the second bolt (403). Multiple pressing rods (406) are fixedly connected to the left side of the sliding plate (405). The pressing rods (406) abut against the right side of the rightmost first placer (8). The limiting rings (404) are fixedly connected to the right side of the main limiter (101) and the auxiliary limiter (201) respectively. The left side of the second bolt (403) is rotatably connected to the inside of the limiting rings (404).

10. An auxiliary speed bump for bridge safety vibration detection according to claim 9, characterized in that, The left end of the second bolt (403) is rotatably connected to the right side of the main limiter (101) or the secondary limiter (201), and the inside of the slide plate (405) is slidably connected to the outside of the fixing rod (401).

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