Auxiliary device for bridge load test detection

Abstract

The utility model provides an auxiliary device for bridge load test detection. The auxiliary device comprises a movable base, the sensor bearing mechanism is arranged at the upper end of the movable base and comprises a mounting plate, a box body fixed to one side of the upper end of the mounting plate, electric push rods fixed to the four corners of the bottom in the box body respectively and L-shaped blocking pieces arranged on the outer walls of the top ends of the telescopic ends of the electric push rods, contact blocks are arranged at the top ends of the telescopic ends of the electric push rods, and pressure sensors are arranged on the contact blocks; a controller is arranged on the box body and electrically connected with the pressure sensor and the electric push rod. The cleaning mechanism is used for scraping or sweeping the lower end face of the bridge; and the lifting mechanism is used for lifting the mounting plate. The pressure state between the four corners of the sensor and the bridge can be monitored and detected, the problems that the sensor is damaged and not attached due to the fact that the pressure borne by the sensor is too large or too small are solved, the bridge floor can be cleaned, the sensor makes full contact with the bridge, the fixing effect is improved, and the accuracy of the detection result is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge testing equipment, specifically to an auxiliary device for bridge load testing. Background Technology

[0002] With the rapid development of my country's economy, highway projects have also increased significantly. Bridges, as a crucial link in transportation, play a vital role in economic development. In recent years, various types of bridges have been built in China. These bridges require real-time monitoring during construction and use to ensure smooth progress and safe operation. During bridge inspection, sensors need to be fixed to the bottom of the bridge. Currently, there are lifting devices available to assist in sensor installation, facilitating sensor fixation at the bridge base without the need for scaffolding or manual installation using platforms provided by bridge inspection vehicles. This reduces the workload and intensity of the work.

[0003] However, existing auxiliary devices for bridge load testing still have the following drawbacks: First, since the distance from the ground to the lower end of the bridge varies, simply placing the mounting plate against the lower end of the sensor cannot guarantee its fixation. If the pressure exerted by the mounting plate on the sensor is too great, it can easily damage the sensor. If the pressure exerted on the sensor is too small, the sensor cannot make sufficient contact with the bridge, resulting in inaccurate test results. Second, since dust or debris often adheres to the lower end of the bridge, it may also cause the sensor to not fit properly against the lower end of the bridge, thus affecting the test results.

[0004] In summary, an auxiliary device for bridge load testing needs to be designed to overcome the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary device for bridge load testing and detection that overcomes the above-mentioned problems.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an auxiliary device for bridge load testing, comprising:

[0007] A movable base, comprising a base and self-locking casters located at the four corners of the bottom of the base;

[0008] The sensor carrying mechanism is located at the upper end of the movable base. It includes a mounting plate, a box fixed to one side of the upper end of the mounting plate, electric push rods fixed to the four corners of the inner bottom of the box, and L-shaped baffles respectively provided on the outer wall of the top end of the telescopic end of each electric push rod. The L-shaped baffles form a receiving space for accommodating the detection sensor. The top end of the telescopic end of each electric push rod is provided with a contact block, and a pressure sensor is provided on the contact block. The box is provided with a controller, which is electrically connected to the pressure sensor and the electric push rod respectively.

[0009] A cleaning mechanism, which is mounted on the mounting plate on one side of the box, is used to scrape or sweep the lower end surface of the bridge.

[0010] A lifting mechanism is provided between the base and the mounting plate and is used to raise the mounting plate.

[0011] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0012] Furthermore, the cleaning mechanism includes a mounting block fixed on the mounting plate, a strip support arm rotatably connected to the upper end of the mounting block, a baffle plate slidably disposed on the upper end of the strip support arm, and a scraper fixed on the upper end of the baffle plate near the mounting block.

[0013] The strip support arm is provided with a sliding control mechanism for controlling the baffle to slide back and forth along the length of the strip support arm;

[0014] The mounting block is equipped with a rotation control mechanism for driving the strip support arm to rotate. After the strip support arm rotates at a certain angle, it is completely located on the upper left side of the box body.

[0015] Furthermore, the sliding control mechanism includes a groove formed on the upper surface of the strip support arm along its length direction, a slider slidably disposed in the groove, a lead screw rotatably connected to the groove via a first bearing, and a first motor disposed on the outer wall of one end of the strip support arm. The output shaft of the first motor is fixedly connected to one end of the lead screw, and the slider is threadedly connected to the lead screw.

[0016] The lower end of the shielding plate near the mounting block is fixedly connected to the upper end of the slider.

[0017] Furthermore, the mounting block has a cavity in the middle, and a first rotating shaft is rotatably mounted in the middle of the cavity via a second bearing. The top end of the first rotating shaft is fixedly connected to the lower end of the strip support arm near the mounting block.

[0018] The rotation control mechanism includes a first bevel gear fixedly sleeved on the outer wall of the first rotating shaft, a second rotating shaft rotatably connected to one side wall of the cavity, and a second bevel gear fixedly sleeved on the outer wall of the second rotating shaft. One end of the second rotating shaft extends out of the outer wall of the mounting block and is fixedly connected to the output shaft of the second motor fixed on the outer wall of the mounting block. The second bevel gear and the first bevel gear are meshed together.

[0019] Furthermore, the upper surface of the baffle plate is an inclined surface, and the inclined surface gradually decreases from the side closer to the scraper to the side farther away from the scraper;

[0020] When the slider slides to the side close to the mounting block, the shield completely covers the box body;

[0021] Furthermore, the scraper is detachably connected to the baffle plate.

[0022] Furthermore, a groove is provided on one side of the upper surface of the baffle plate, and a first threaded hole communicating with the groove is provided on one side wall of the baffle plate. A fixing bolt is threaded into the first threaded hole, and an insert matching the groove is fixedly provided at the lower end of the scraper. A second threaded hole matching the fixing bolt is provided on one side of the insert.

[0023] Furthermore, each of the electric push rods has two L-shaped baffles, which are respectively located on adjacent outer side walls at the top of the telescopic end of the electric push rod, and the accommodating space formed inside each L-shaped baffle is rectangular.

[0024] Furthermore, the lifting mechanism includes a first lifting mechanism and a second lifting mechanism, which are fixedly connected by a connecting plate. The lower end of the first lifting mechanism is connected to the base, and the upper end of the second lifting mechanism is fixedly connected to the mounting plate.

[0025] Furthermore, the first lifting mechanism is a scissor lift support;

[0026] The second lifting mechanism is a hydraulic or pneumatic telescopic column.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. This utility model discloses an auxiliary device for bridge load testing. It comprises a mounting plate on the upper end of a lifting mechanism, a housing on the mounting plate, and electric push rods at the four bottom corners of the housing. L-shaped baffles are mounted on the electric push rods, allowing the detection sensor to be placed within the space formed by multiple L-shaped baffles. A contact block is mounted at the top of the telescopic end of the electric push rod, and a pressure sensor is mounted on the contact block. The pressure sensor and the electric push rod are electrically connected to a controller. The lifting mechanism raises the housing containing the detection sensor to a position close to the lower surface of the bridge. Then, the main control switch on the movable base activates the electric push rods, causing them to continue raising the detection sensor until it contacts the lower surface of the bridge. At this point, the pressure sensors at the top of the four electric push rods detect the pressure exerted by the bridge on the detection sensor. If the pressure reaches a pre-set range by the controller, the controller stops the electric push rod containing that pressure sensor. The process continues until all four electric push rods stop, completing the fixation of the detection sensor and allowing for bridge load testing. By using four electric push rods and four pressure sensors, the pressure between the four corners of the sensor and the bridge can be monitored. This not only avoids the problem of excessive pressure on the sensor causing damage, but also ensures that the sensor makes full contact with the bridge, improving the fixing effect and ensuring the accuracy of the test results.

[0029] 2. This utility model provides an auxiliary device for bridge load testing. It comprises a mounting block, a strip support arm rotatably connected to the upper end of the mounting block, a baffle plate slidably mounted on the upper end of the strip support arm, a scraper fixed to one side of the baffle plate, and a cleaning mechanism consisting of a sliding control mechanism and a rotation control mechanism. Before the detection sensor slides out of the box, the cleaning mechanism can scrape the lower surface of the bridge, thus preventing dust and debris adhering to the underside of the bridge from affecting the fixed installation of the detection sensor. This further improves the fixing effect of the detection sensor and contributes to the accuracy of the test results.

[0030] 3. The auxiliary device for bridge load testing of this utility model can effectively prevent dust and debris scraped from the underside of the bridge from falling onto the box body by setting a shield, thereby avoiding contamination of the detection sensor; the scraper can be detachably connected to the shield, which makes it easy to replace the scraper after it wears out, thus improving the practicality of this device. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the auxiliary device for bridge load testing provided by this utility model. Figure 1 (Cleaning status);

[0032] Figure 2This is a schematic diagram of the overall structure of the auxiliary device for bridge load testing provided by this utility model. Figure 2 (Detecting working status);

[0033] Figure 3 This is a cross-sectional structural diagram of the sensor carrying mechanism and the cleaning mechanism in this embodiment of the utility model;

[0034] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Movable base; 11. Base; 12. Self-locking casters;

[0037] 2. Sensor support mechanism; 21. Mounting plate; 22. Housing; 23. Electric push rod; 231. Contact block; 24. L-shaped baffle; 25. Pressure sensor;

[0038] 3. Detection sensor;

[0039] 4. Cleaning mechanism; 41. Mounting block; 411. Cavity; 412. Second bearing; 413. First rotating shaft; 42. Strip support arm; 43. Baffle plate; 431. Groove; 432. First threaded hole; 433. Fixing bolt; 44. Scraper; 441. Insert block; 442. Second threaded hole; 45. Sliding control mechanism; 451. Slide groove; 452. Slider; 453. First bearing; 454. Lead screw; 455. First motor; 46. Rotation control mechanism; 461. First bevel gear; 462. Second rotating shaft; 463. Second bevel gear; 464. Second motor;

[0040] 5. Lifting mechanism; 51. First lifting mechanism; 52. Second lifting mechanism; 53. Connecting plate;

[0041] 6. Controller. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0043] Please see Figures 1 to 4 An auxiliary device for bridge load testing, comprising:

[0044] The movable base 1 includes a base 11 and self-locking casters 12 located at the four corners of the bottom of the base 11; it facilitates moving the device to the desired position and locks the casters 12 through the self-locking mechanism to prevent them from sliding at will; a push rod is also provided on one side of the base 11, which makes it easy for workers to push or pull the device by hand.

[0045] The sensor carrying mechanism 2 is located on the upper end of the movable base 11. It includes a mounting plate 21, a housing 22 fixed to one side of the upper end of the mounting plate 21, electric push rods 23 fixed to the four corners of the inner bottom of the housing 22, and L-shaped baffles 24 respectively located on the outer top of the telescopic ends of each electric push rod 23. Each L-shaped baffle 24 forms a receiving space for accommodating the detection sensor 3. A contact block 231 is provided at the top of the telescopic end of each electric push rod 23, and a pressure sensor 25 is mounted on the contact block 231. A controller 6 is provided on the housing 22, and the controller 6 is connected to the pressure sensor 25 and the electric push rod. 23 Electrical connection; The lifting mechanism 5 is used to lift the housing 22 containing the detection sensor 3 to a position close to the lower surface of the bridge. Then, the electric push rod 23 is activated by the control switch to continue raising the detection sensor 3 until it contacts the lower surface of the bridge. At this time, the pressure sensors 25 at the top of the four electric push rods 23 can detect the pressure of the bridge on the detection sensor 3. If the pressure reaches the range preset by the controller 6, the controller 6 controls the electric push rod 23 where the pressure sensor 25 is located to stop working. The fixing of the detection sensor 3 is completed when all four electric push rods 23 stop working, and the bridge load test can be carried out.

[0046] The cleaning mechanism 4 is mounted on the mounting plate 21 on one side of the box 22 and is used to scrape or sweep the lower end surface of the bridge.

[0047] The lifting mechanism 5 is disposed between the base 11 and the mounting plate 21 and is used to lift the mounting plate 21.

[0048] Preferably, the cleaning mechanism 4 includes a mounting block 41 fixed on the mounting plate 21, a strip support arm 42 rotatably connected to the upper end of the mounting block 41, a baffle plate 43 slidably disposed on the upper end of the strip support arm 42, and a scraper 44 fixed on the upper end of the baffle plate 43 near the mounting block 41.

[0049] The strip support arm 42 is provided with a sliding control mechanism 45 for controlling the baffle plate 43 to slide back and forth along the length direction of the strip support arm 42;

[0050] The mounting block 41 is provided with a rotation control mechanism 46 for driving the strip support arm 42 to rotate. After the strip support arm 42 rotates at a certain angle, it is completely located on the upper left side of the box body 22.

[0051] Preferably, the sliding control mechanism 45 includes a groove 451 formed on the upper surface of the strip support arm 42 along its length direction, a slider 452 slidably disposed in the groove 451, a lead screw 454 rotatably connected in the groove 451 via a first bearing 453, and a first motor 455 disposed on the outer wall of one end of the strip support arm 42. The output shaft of the first motor 455 is fixedly connected to one end of the lead screw 454, and the slider 452 is threadedly connected to the lead screw 454. The first motor 455 is a reversible motor, which can drive the lead screw 454 to rotate forward and backward, so that the slider 452 can slide back and forth in the groove 451, thereby achieving the purpose of driving the baffle plate 43 and the scraper 44 to move back and forth, and then the scraper 44 can scrape the lower surface of the bridge to achieve the purpose of cleaning.

[0052] The lower end of the shield 43 near the mounting block 41 is fixedly connected to the upper end of the slider 452.

[0053] In this embodiment, before the detection sensor 3 slides out of the housing 22, the lower end surface of the bridge can be scraped by the cleaning mechanism 4. Specifically, by activating the first motor 455, the lead screw 454 can rotate forward and backward, causing the slider 452 to slide back and forth within the groove 451. This achieves the purpose of moving the baffle plate 43 and the scraper 44 back and forth, thereby scraping the underside of the bridge with the scraper 44 to achieve the purpose of cleaning. It should be noted that the scraper 44 initially scrapes towards the side with the baffle plate 43, so that dust or debris falls onto the baffle plate 43 and falls off, preventing dust and debris scraped from the underside of the bridge from falling onto the housing 22 and causing contamination to the detection sensor 3. Under normal circumstances, the scraper 44 only needs to scrape once to clean the underside of the bridge. If a second scraping is required, the second lifting mechanism 52 described below needs to be lowered slightly to disengage the scraper 44 from the bridge surface. Then, the first motor 455 is activated to return the baffle plate 43 and the scraper 44 to their initial positions, and then the first motor 455 is activated again to scrape once more.

[0054] Preferably, the mounting block 41 has a cavity 411 in the middle, and a first rotating shaft 413 is rotatably connected in the middle of the cavity 411 via a second bearing 412. The top end of the first rotating shaft 413 is fixedly connected to the lower end of the strip support arm 42 on the side near the mounting block 41.

[0055] The rotation control mechanism 46 includes a first bevel gear 461 fixedly sleeved on the outer wall of the first rotating shaft 413, a second rotating shaft 462 rotatably connected to one side wall of the cavity 411, and a second bevel gear 463 fixedly sleeved on the outer wall of the second rotating shaft 462. One end of the second rotating shaft 462 extends out of the outer wall of the mounting block 41 and is fixedly connected to the output shaft of a second motor 464 fixed on the outer wall of the mounting block 41. The second bevel gear 463 and the first bevel gear 461 are meshed together. The second motor 464 is also a forward and reverse reversible motor.

[0056] In this embodiment, by starting the second motor 464, the gear transmission can be driven, thereby causing the first rotating shaft 413 to rotate 180 degrees. Then, the strip support arm 42, the baffle plate 43, and the scraper 44 are all located on the left side of the upper end of the box 22, so as not to affect the lifting of the detection sensor 3 by the electric push rod 23.

[0057] Preferably, the upper surface of the baffle plate 43 is an inclined surface, and the inclined surface gradually decreases from the side closer to the scraper 44 to the side farther away from the scraper 44; this facilitates the scraper 44 to scrape the dust and debris on the bridge surface off and onto the baffle plate 43, and further onto the ground through the inclined surface.

[0058] When the slider 452 slides to the side close to the mounting block 41, the shield 43 completely covers the box 22; to prevent dust and debris scraped off the underside of the bridge from falling onto the box 22 and to prevent contamination of the detection sensor 3.

[0059] Preferably, the scraper 44 is detachably connected to the baffle plate 43, which facilitates the replacement of the scraper 44 after it wears out, thus improving the practicality of the device.

[0060] Preferably, a groove 431 is provided on one side of the upper surface of the baffle plate 43, and a first threaded hole 432 communicating with the groove 431 is provided on one side wall of the baffle plate 43. A fixing bolt 433 is threadedly connected to the first threaded hole 432. An insert 441 matching the groove 431 is fixedly provided at the lower end of the scraper 44. A second threaded hole 442 matching the fixing bolt 433 is provided on one side of the insert 441.

[0061] Preferably, each of the electric push rods 23 has two L-shaped baffles 24, which are respectively provided on the adjacent outer side wall at the top end of the telescopic end of the electric push rod 23, and the accommodating space formed inside each L-shaped baffle 24 is rectangular.

[0062] Preferably, the lifting mechanism 5 includes a first lifting mechanism 51 and a second lifting mechanism 52, which are fixedly connected by a connecting plate 53. The lower end of the first lifting mechanism 51 is connected to the base 11, and the upper end of the second lifting mechanism 52 is fixedly connected to the mounting plate 21. Both the first lifting mechanism 51 and the second lifting mechanism 52 in this invention can adopt existing technologies.

[0063] Preferably, the first lifting mechanism 51 is a scissor-type lifting support, which is existing technology and will not be described in detail here;

[0064] The second lifting mechanism 52 is a hydraulic or pneumatic telescopic column.

[0065] The present invention has been further described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An auxiliary device for bridge load testing, characterized in that, It includes: The movable base (1) includes a base (11) and self-locking casters (12) located at the four corners of the bottom of the base (11). The sensor carrying mechanism (2) is located at the upper end of the movable base (1). It includes a mounting plate (21), a box (22) fixed to one side of the upper end of the mounting plate (21), electric push rods (23) fixed to the four corners of the inner bottom of the box (22), and L-shaped baffles (24) respectively provided on the outer wall of the top end of the telescopic end of each electric push rod (23). Each L-shaped baffle (24) surrounds and forms a receiving space for accommodating the detection sensor (3). The top end of the telescopic end of the electric push rod (23) is provided with a contact block (231). A pressure sensor (25) is provided on the contact block (231). A controller (6) is provided on the box (22). The controller (6) is electrically connected to the pressure sensor (25) and the electric push rod (23) respectively. The cleaning mechanism (4) is located on the mounting plate (21) on one side of the box (22) and is used to scrape or sweep the lower end face of the bridge. A lifting mechanism (5) is provided between the base (11) and the mounting plate (21) and is used to lift the mounting plate (21).

2. The auxiliary device for bridge load testing according to claim 1, characterized in that: The cleaning mechanism (4) includes a mounting block (41) fixed on the mounting plate (21), a strip support arm (42) rotatably connected to the upper end of the mounting block (41), a baffle plate (43) slidably disposed on the upper end of the strip support arm (42), and a scraper (44) fixed on the upper end of the baffle plate (43) near the mounting block (41). The strip support arm (42) is provided with a sliding control mechanism (45) for controlling the baffle plate (43) to slide back and forth along the length direction of the strip support arm (42). The mounting block (41) is provided with a rotation control mechanism (46) for driving the strip support arm (42) to rotate. After the strip support arm (42) rotates at a certain angle, it is completely located on the upper left side of the box body (22).

3. The auxiliary device for bridge load testing according to claim 2, characterized in that: The sliding control mechanism (45) includes a groove (451) formed on the upper surface of the strip support arm (42) along its length direction, a slider (452) slidably disposed in the groove (451), a lead screw (454) rotatably connected in the groove (451) via a first bearing (453), and a first motor (455) disposed on the outer wall of one end of the strip support arm (42). The output shaft of the first motor (455) is fixedly connected to one end of the lead screw (454), and the slider (452) is threadedly connected to the lead screw (454). The lower end of the shield (43) near the mounting block (41) is fixedly connected to the upper end of the slider (452).

4. The auxiliary device for bridge load testing according to claim 2, characterized in that: The The mounting block (41) has a cavity (411) in the middle. A first rotating shaft (413) is rotatably connected in the middle of the cavity (411) via a second bearing (412). The top end of the first rotating shaft (413) is fixedly connected to the lower end of the strip support arm (42) near the mounting block (41). The rotation control mechanism (46) includes a first bevel gear (461) fixedly sleeved on the outer wall of the first rotating shaft (413), a second rotating shaft (462) rotatably connected to one side wall of the cavity (411), and a second bevel gear (463) fixedly sleeved on the outer wall of the second rotating shaft (462). One end of the second rotating shaft (462) extends out of the outer wall of the mounting block (41) and is fixedly connected to the output shaft of the second motor (464) fixed on the outer wall of the mounting block (41). The second bevel gear (463) and the first bevel gear (461) are meshed together.

5. The auxiliary device for bridge load testing according to claim 3, characterized in that: The upper surface of the baffle plate (43) is an inclined surface, and the inclined surface gradually decreases from the side closer to the scraper (44) to the side farther away from the scraper (44); When the slider (452) slides to the side close to the mounting block (41), the shield (43) completely covers the box (22).

6. An auxiliary device for bridge load testing according to any one of claims 2-5, characterized in that, The scraper (44) is detachably connected to the baffle plate (43).

7. The auxiliary device for bridge load testing according to claim 6, characterized in that, The upper surface of the baffle plate (43) has a groove (431) on one side, and a first threaded hole (432) communicating with the groove (431) is opened on one side wall of the baffle plate (43). A fixing bolt (433) is threadedly connected to the first threaded hole (432). The lower end of the scraper (44) is fixedly provided with an insert (441) matching the groove (431). A second threaded hole (442) matching the fixing bolt (433) is opened on one side of the insert (441).

8. The auxiliary device for bridge load testing according to claim 1, characterized in that, Each of the electric push rods (23) has two L-shaped baffles (24), which are respectively located on the adjacent outer side wall at the top of the telescopic end of the electric push rod (23), and the accommodating space formed inside each L-shaped baffle (24) is rectangular.

9. The auxiliary device for bridge load testing according to claim 1, characterized in that, The lifting mechanism (5) includes a first lifting mechanism (51) and a second lifting mechanism (52), which are fixedly connected by a connecting plate (53). The lower end of the first lifting mechanism (51) is connected to the base (11), and the upper end of the second lifting mechanism (52) is fixedly connected to the mounting plate (21).

10. An auxiliary device for bridge load testing according to claim 9, characterized in that: The first lifting mechanism (51) is a scissor lift support; The second lifting mechanism (52) is a hydraulic or pneumatic telescopic column.

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