Highway bridge roadbed pavement rebound deflection detection device

Abstract

The utility model relates to the technical field of springback deflection, and discloses a highway bridge subgrade pavement springback deflection detection device which comprises a shell and a fixing plate, the outer wall of the fixing plate is fixedly connected with a first motor, the output end of the first motor is fixedly provided with a transmission shaft, the outer wall of the transmission shaft is rotatably connected to the outer wall of the fixing plate, and the outer wall of the transmission shaft is fixedly connected with the shell. A first bevel gear and a second bevel gear are fixedly connected to the outer wall of the transmission shaft, third bevel gears are connected to the tooth ends of the first bevel gear and the second bevel gear in a meshed mode, the outer walls of the third bevel gears are rotationally connected to the outer wall of the fixing plate, and lead screws are fixedly connected to the outer walls of the third bevel gears. According to the utility model, the motor I is started to drive the transmission shaft at the output end to rotate, the transmission shaft simultaneously drives the bevel gear I and the bevel gear II to rotate, the screw rod drives the sliding frame to slide, and the sliding block drives the measuring beam to rotate through the slotting plate, so that the measuring beam can incline leftwards or rightwards and is kept horizontal on an inclined road surface; and the accuracy of the detection effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of rebound deflection technology, and in particular to a rebound deflection detection device for highway bridge subgrade and pavement. Background Technology

[0002] Highway bridge subgrade and pavement deflection is a key indicator for evaluating the load-bearing capacity and performance of road structures. When a vehicle travels to a certain point on the road surface, the vertical load applied by the wheels will be diffused and transmitted through the various structural layers of the pavement. Due to the elasticity and plasticity of each layer of material, vertical displacement will occur. The closer to the pavement surface, the more obvious this displacement will be. Highway bridge subgrade and pavement rebound deflection testing is a key link in ensuring road quality and safety. When the highway bridge subgrade and pavement are subjected to external forces, they will produce a certain vertical deformation. After the external forces are removed, the pavement will rebound and recover some of the deformation.

[0003] Common testing devices include automatic deflectometers. The testing vehicle travels at a certain speed, with the two rear wheels moving from the starting point towards the testing point. When the two rear wheels pass through the testing point, the vertical displacement of the testing point is recorded by a displacement sensor. At this point, the measuring beam is dragged by the measuring frame to the next testing point at twice the vehicle speed, and the process is repeated continuously. During testing, road surfaces with different inclination angles may be encountered, which may cause the measuring instrument to be in a horizontal position, resulting in inaccurate test results. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a highway bridge subgrade and pavement rebound deflection testing device, which aims to improve the problem that the measuring instrument may be in a horizontal position, resulting in inaccurate test results.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A roadbed and pavement rebound deflection testing device for highway bridges includes a housing and a fixing plate. A motor is fixedly connected to the outer wall of the fixing plate. A drive shaft is fixedly mounted on the output end of the motor. The outer wall of the drive shaft is rotatably connected to the outer wall of the fixing plate. A first bevel gear and a second bevel gear are fixedly connected to the outer wall of the drive shaft. The teeth of both the first and second bevel gears are meshed with a third bevel gear. The outer wall of the third bevel gear is rotatably connected to the outer wall of the fixing plate. A lead screw is fixedly connected to the outer wall of the lead screw. A sliding frame is threadedly connected to the outer wall of the lead screw. The outer wall of the sliding frame is slidably connected to the interior of the fixing plate. A slider is fixedly connected to the outer wall of the sliding frame. A slotted plate is slidably connected to the outer wall of the slider. A measuring beam is fixedly connected to the lower surface of the slotted plate. The outer wall of the measuring beam is rotatably connected to the outer wall of the fixing plate. A clamping assembly is provided on the lower surface of the measuring beam for fixing the testing instrument.

[0007] Preferably, the clamping assembly includes a clamp frame, the upper surface of which is fixedly connected to the lower surface of the measuring beam, and the clamp frame is provided with grippers inside.

[0008] Preferably, a slide rail is fixedly connected inside the outer casing, and a closing door is provided on the outer wall of the outer casing.

[0009] Preferably, a hydraulic cylinder is fixedly connected inside the outer casing, and a sleeve is fixedly connected to the output end of the hydraulic cylinder.

[0010] Preferably, the sleeve is rotatably connected to a rotating shaft, and both ends of the rotating shaft are slidably connected to the inside of the slide rail.

[0011] Preferably, a connecting block is fixedly connected to the outer wall of the rotating shaft, and the outer wall of the connecting block is fixedly connected to the outer wall of the fixing plate.

[0012] Preferably, a spur gear is fixedly connected to the outer wall of the rotating shaft, and a rack is meshed with the tooth end of the spur gear.

[0013] Preferably, the outer wall of the rack is fixedly connected to the inside of the housing.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the starting motor drives the transmission shaft at the output end to rotate, and the transmission shaft simultaneously drives the first bevel gear and the second bevel gear to rotate. The lead screw drives the sliding frame to slide, and the slider drives the measuring beam to rotate through the slotted plate. This allows the measuring beam to tilt to the left or right, keeping the measuring beam horizontal on the inclined road surface and improving the accuracy of the detection effect.

[0016] 2. In this utility model, the hydraulic cylinder is activated to drive the sleeve to slide, the sleeve pulls the rotating shaft to slide, and the rotating shaft drives the fixed plate to slide into the outer shell through the connecting block. At the same time, the spur gear and the rack mesh and connect. The rotating shaft rotates while sliding, which can fold the fixed plate upward, thereby facilitating the movement of the device. After storage, it can also protect the parts and improve the service life of the device. Attached Figure Description

[0017] Figure 1 This is a perspective view of a highway bridge subgrade and pavement rebound deflection detection device proposed in this utility model.

[0018] Figure 2 This is a partial structural diagram of the lead screw of a roadbed and pavement rebound deflection detection device for highway bridges proposed in this utility model.

[0019] Figure 3 This is a partial structural diagram of the rack of a highway bridge subgrade and pavement rebound deflection detection device proposed in this utility model.

[0020] Legend:

[0021] 1. Outer shell; 2. Fixing plate; 3. Motor 1; 4. Drive shaft; 5. Bevel gear 1; 6. Bevel gear 2; 7. Bevel gear 3; 8. Lead screw; 9. Sliding frame; 10. Slider; 11. Slotted plate; 12. Measuring beam; 13. Fixture frame; 14. Gripper; 15. Slide rail; 16. Hydraulic cylinder; 17. Sleeve; 18. Rotating shaft; 19. Connecting block; 20. Circular gear; 21. Rack; 22. Closing door. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a highway bridge subgrade pavement rebound deflection testing device, comprising a housing 1 and a fixing plate 2. A motor 3 is fixedly connected to the outer wall of the fixing plate 2. A transmission shaft 4 is fixedly installed at the output end of the motor 3. The outer wall of the transmission shaft 4 is rotatably connected to the outer wall of the fixing plate 2. A bevel gear 5 and a bevel gear 6 are fixedly connected to the outer wall of the transmission shaft 4. The tooth ends of both bevel gear 5 and bevel gear 6 are meshed with a bevel gear 7. The outer wall of bevel gear 7 is rotatably connected to the outer wall of the fixing plate 2. A lead screw 8 is fixedly connected to the outer wall of the lead screw 8. A sliding frame 9 is threadedly connected to the outer wall of the lead screw 8. The outer wall of the sliding frame 9 is slidably connected to the inside of the fixing plate 2. A slider 10 is fixedly connected to the outer wall of the sliding frame 9. A slotted plate 11 is slidably connected to the outer wall of the slider 10. A measuring beam 12 is fixedly connected to the lower surface of the slotted plate 11. The outer wall of the measuring beam 12 is rotatably connected to the outer wall of the fixing plate 2. A clamping assembly is provided on the lower surface of the measuring beam 12 for fixing the testing instrument.

[0024] Specifically, motor 3 drives transmission shaft 4 to rotate. Bevel gear 5 and bevel gear 6 are set in opposite directions on the outer wall of transmission shaft 4. Bevel gear 5 and bevel gear 6 rotate in opposite directions on the outer wall of transmission shaft 4. Bevel gear 5 and bevel gear 6 simultaneously drive bevel gear 7 to rotate. Fixed plate 2 supports the rotation of bevel gear 7. Bevel gear 7 on both sides drives lead screw 8 to rotate in opposite directions. Lead screw 8 on both sides pushes sliding frame 9 to rise and fall. The internal groove of fixed plate 2 supports and restricts the sliding of sliding frame 9. Sliding frame 9 pushes slotted plate 11 to tilt through slider 10. Slider 10 slides inside slotted plate 11. Slotted plate 11 pushes measuring beam 12 to rotate.

[0025] Reference Figure 2 The clamping assembly includes a clamp frame 13, the upper surface of which is fixedly connected to the lower surface of the measuring beam 12, and the clamp frame 13 is provided with grippers 14 inside.

[0026] Specifically, the testing instrument is placed on the underside of the fixture frame 13, and the gripper 14 is used to fix the testing instrument using existing technology.

[0027] Reference Figure 1 and Figure 3 The outer casing 1 is fixedly connected to a slide rail 15, and the outer wall of the outer casing 1 is provided with a closing door 22; the outer casing 1 is fixedly connected to a hydraulic cylinder 16, and the output end of the hydraulic cylinder 16 is fixedly connected to a sleeve 17; the sleeve 17 is rotatably connected to a rotating shaft 18, and both ends of the rotating shaft 18 are slidably connected to the inside of the slide rail 15; the outer wall of the rotating shaft 18 is fixedly connected to a connecting block 19, and the outer wall of the connecting block 19 is fixedly connected to the outer wall of the fixing plate 2.

[0028] Specifically, the closed door 22 is connected to the outer shell 1 via a hinge. The outer shell 1 fixes the hydraulic cylinder 16. The hydraulic cylinder 16 drives the sleeve 17 to slide. The sleeve 17 drives the rotating shaft 18 to slide. The rotating shaft 18 can rotate inside the sleeve 17. The slide rail 15 can support the sliding of the rotating shaft 18. The rotating shaft 18 pulls the fixing plate 2 to slide through the connecting block 19, and stores the fixing plate 2 inside the outer shell 1.

[0029] Reference Figure 3 A spur gear 20 is fixedly connected to the outer wall of the rotating shaft 18, and a rack 21 is meshed with the tooth end of the spur gear 20; the outer wall of the rack 21 is fixedly connected to the inside of the outer shell 1.

[0030] Specifically, when the rotating shaft 18 slides, the connecting block 19 moves accordingly. Since the connecting block 19 meshes with the spur gear 20, the connecting block 19 will rotate when the rotating shaft 18 slides, so that the rotating shaft 18 can rotate while sliding, which can fold the fixing plate 2 to the upper side of the outer shell 1. The lower side of the outer shell 1 is empty and can be used to place other items.

[0031] Working principle: When using this device, the testing instrument is first fixed by the clamp frame 13 and the gripper 14. Then, the motor 3 drives the transmission shaft 4 at the output end to rotate. The transmission shaft 4 simultaneously drives the bevel gear 5 and bevel gear 6 to rotate. The bevel gear 5 and bevel gear 6 rotate in opposite directions. The bevel gear 5 and bevel gear 6 simultaneously drive the bevel gear 7 to rotate. The bevel gear 7 drives the sliding frame 9 to rise and fall through the lead screw 8. The sliding frame 9 pulls the slotted plate 11 to slide through the slider 10. The sliding of the slotted plates 11 on both sides causes the measuring beam 12 to rotate, and the measuring beam 12 tilts at a certain angle. After the test is completed, the hydraulic system is activated. The cylinder 16 drives the sleeve 17 at the output end to slide, and the sleeve 17 pulls the rotating shaft 18 to slide. The rotating shaft 18 slides inside the slide rail 15. The rotating shaft 18 pulls the fixed plate 2 into the interior of the outer shell 1 through the connecting block 19. At the same time, the rotating shaft 18 drives the spur gear 20 to slide. The spur gear 20 meshes with the rack 21. The rack 21 causes the rotating shaft 18 to rotate. The rotating shaft 18 drives the fixed plate 2 to rotate through the connecting block 19. This allows the fixed plate 2 to be folded up inside the upper side of the outer shell 1. The lower side of the outer shell 1 can be used to place other items. This device can not only adjust the angle of the measuring beam 12, but also automatically fold up the fixed plate 2, which is convenient for movement and protection.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A highway bridge subgrade pavement rebound deflection detection device, comprising a shell (1) and a fixed plate (2), characterized in that: The outer wall of the fixed plate (2) is fixedly connected with a motor one (3), the output end of the motor one (3) is fixedly provided with a transmission shaft (4), the outer wall of the transmission shaft (4) is rotatably connected with the outer wall of the fixed plate (2), the outer wall of the transmission shaft (4) is fixedly connected with a bevel gear one (5) and a bevel gear two (6), the tooth end of the bevel gear one (5) and the bevel gear two (6) is engagedly connected with a bevel gear three (7), the outer wall of the bevel gear three (7) is rotatably connected with the outer wall of the fixed plate (2), the outer wall of the bevel gear three (7) is fixedly connected with a lead screw (8), the outer wall of the lead screw (8) is threadedly connected with a sliding frame (9), the outer wall of the sliding frame (9) is slidably connected with the inside of the fixed plate (2), the outer wall of the sliding frame (9) is fixedly connected with a sliding block (10), the outer wall of the sliding block (10) is slidably connected with a slotted plate (11), the lower surface of the slotted plate (11) is fixedly connected with a determination beam (12), the outer wall of the determination beam (12) is rotatably connected with the outer wall of the fixed plate (2), the lower surface of the determination beam (12) is provided with a clamping assembly, and the clamping assembly is used for fixing a detection instrument.

2. The highway bridge subgrade pavement rebound deflection detection device according to claim 1, characterized in that: The clamping assembly comprises a clamp frame (13), and the upper surface of the clamp frame (13) is fixedly connected with the lower surface of the determination beam (12).

3. The highway bridge subgrade pavement rebound deflection detection device according to claim 1, characterized in that: The inside of the shell (1) is fixedly connected with a sliding rail (15), and the outer wall of the shell (1) is provided with a closing door (22).

4. The highway bridge subgrade pavement rebound deflection detection device according to claim 1, characterized in that: The inside of the shell (1) is fixedly connected with a hydraulic cylinder (16), and the output end of the hydraulic cylinder (16) is fixedly connected with a sleeve (17).

5. The highway bridge subgrade pavement resilience deflection detection device according to claim 4, characterized in that: The inside of the sleeve (17) is rotatably connected with a rotating shaft (18), and both ends of the rotating shaft (18) are slidably connected with the inside of the sliding rail (15).

6. The highway bridge subgrade pavement rebound deflection detection device according to claim 5, characterized in that: The outer wall of the rotating shaft (18) is fixedly connected with a connecting block (19), and the outer wall of the connecting block (19) is fixedly connected with the outer wall of the fixed plate (2).

7. The highway bridge subgrade pavement resilience deflection detection device according to claim 5, characterized in that: The outer wall of the rotating shaft (18) is fixedly connected with a circular gear (20), and the tooth end of the circular gear (20) is engagedly connected with a rack (21).

8. The highway bridge subgrade pavement resilience deflection detection device according to claim 7, characterized in that: The outer wall of the rack (21) is fixedly connected with the inside of the shell (1).

Images