Road and bridge engineering flatness detector

Abstract

The utility model relates to the technical field of detection equipment, in particular to a road and bridge engineering flatness detector, which comprises a moving assembly used for device movement, a detection assembly arranged in the middle of the moving assembly and comprising a plurality of detection wheels, each detection wheel is connected with a group of measuring assemblies, a cleaning assembly is arranged on the top surface of each detection wheel, and the measuring assemblies are connected with the moving assembly. The cleaning assembly is used for cleaning the detection wheel surface. According to the utility model, the plurality of detection wheels and the corresponding measurement assemblies are arranged, so that the road surface fluctuation conditions at a plurality of positions can be detected at the same time, the influence of sundries such as pebbles on measurement data can be reduced, the measurement accuracy is improved, and the measurement times are reduced; by arranging the horizontal adjusting assembly, the positions of the measuring assembly and the detection wheel can be adjusted, so that the distance between sampling positions is changed; the blade of the scraper knife is attached to the wheel surface of the detection wheel, so that impurities attached to the surface can be removed by the scraper knife when the detection wheel rolls, the wheel surface is ensured to be clean and flat, and measurement errors are reduced.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a road and bridge engineering flatness testing instrument. Background Technology

[0002] Road surface smoothness refers to the deviation of a road or bridge surface from an ideal plane, generally referring to the deviation of the longitudinal unevenness of the road surface. Road surface smoothness is an important indicator for evaluating road and bridge pavements and for the acceptance of pavement construction.

[0003] For the smoothness testing of continuous road surfaces, an eight-wheel continuous smoothness testing instrument is generally used. It typically includes an eight-wheel moving device with a testing wheel in the middle. The testing wheel contacts the ground under the pressure of a spring. As the device moves along the road surface, the height of the testing wheel changes due to the undulations of the ground. By using a displacement sensor to measure the change in the height of the testing wheel in the vertical direction, the smoothness of the road surface can be detected.

[0004] However, during the movement of the testing wheel, dust, mud and other substances will adhere to the wheel surface, causing the wheel surface to be uneven, which will cause periodic fluctuations in the testing data and affect the testing results. In addition, the single testing wheel design is easily affected by small stones or mud clods on the road, resulting in greater unpredictability in the testing results and requiring repeated testing. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a road and bridge engineering flatness testing instrument.

[0006] The technical solution of this utility model is:

[0007] A road and bridge engineering flatness testing instrument, comprising:

[0008] A movable component is provided for moving the device. A detection component is provided in the middle of the movable component. The detection component includes multiple detection wheels. Each detection wheel is connected to a set of measuring components. The measuring components are used to measure the height change of the detection wheels. The measuring components are installed in the middle of the ground of the movable component through a leveling adjustment component. A cleaning component is provided on the top surface of the detection wheels. The cleaning component is used to clean the surface of the detection wheels.

[0009] Preferably, the mobile component includes a frame, a wheel frame is rotatably mounted on the side of the frame, movable wheels are rotatably mounted on both sides of the end of the wheel frame, and a shock absorber is provided between the wheel frame and the frame.

[0010] Preferably, the leveling component includes a guide rail, which is vertically installed in the middle of the vehicle frame ground. Several sliders are slidably installed on the guide rail, and a fixing bolt is threaded to one side of each slider, with the end face of the fixing bolt abutting against the guide rail.

[0011] Preferably, the measuring component includes a mounting bracket, which is vertically mounted on the bottom surface of the slider. A rotating rod is rotatably mounted at the tail end of the mounting bracket, and the detection wheel is rotatably mounted at the tail end of the rotating rod.

[0012] Preferably, a displacement sensor is vertically mounted on the top of the front side of the mounting bracket, with the bottom end of the displacement sensor abutting against the top end of the rotating rod. The displacement sensor is used to detect changes in the height of the top end of the rotating rod.

[0013] Preferably, the cleaning assembly includes a blade holder, which is fixedly mounted on the tail of the top surface of the rotating rod across the detection wheel. The top surface of the blade holder is provided with a slot, in which a scraper is slidably mounted.

[0014] Preferably, the blade is provided with an adjustment groove in the middle, a limiting screw is provided in the groove, the limiting screw passes through the adjustment groove and is connected to a locking nut, and the blade edge of the blade is in contact with the surface of the detection wheel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention, by setting multiple detection wheels and corresponding measuring components, can simultaneously detect road surface undulations at multiple locations, reducing the impact of small stones and other debris on measurement data, improving measurement accuracy, and reducing the number of measurements. By setting a horizontal adjustment component, the positions of the measuring components and detection wheels can be adjusted, thereby changing the spacing of the sampling positions. By placing the blade of the scraper against the surface of the detection wheel, the scraper can remove impurities adhering to the surface when the detection wheel rolls, ensuring that the wheel surface is clean and flat, and reducing measurement errors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the mobile component structure in this utility model;

[0019] Figure 3 This is a schematic diagram of the detection component structure in this utility model;

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Moving components; 11. Frame; 12. Wheel frame; 13. Transfer wheels; 14. Shock absorbers;

[0023] 2. Detection assembly; 21. Detection box; 22. Guide rail; 23. Slider; 24. Fixing bolt; 25. Mounting bracket; 26. Rotating rod; 27. Detection wheel; 28. First elastic element; 29. ​​Displacement sensor.

[0024] 3. Cleaning components; 31. Tool holder; 32. Slot; 33. Limit screw; 34. Scraper; 35. Adjustment slot; 36. Locking nut. Detailed Implementation

[0025] 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.

[0026] Example 1:

[0027] Please see Figure 1-4 The present invention will describe the above technical solution in detail through the following embodiments:

[0028] A road and bridge engineering flatness testing instrument, comprising:

[0029] The moving component 1 is used for moving the device. The moving component 1 has a detection component 2 in the middle. The detection component 2 includes multiple detection wheels 27. Each detection wheel 27 is connected to a set of measuring components. The measuring components are used to measure the height change of the detection wheel 27. The measuring components are installed in the middle of the ground of the moving component 1 through a horizontal adjustment component. The top surface of the detection wheel 27 is provided with a cleaning component 3. The cleaning component 3 is used to clean the wheel surface of the detection wheel 27.

[0030] The mobile assembly 1 includes a frame 11, a wheel frame 12 rotatably mounted on the side of the frame 11, movable wheels 13 rotatably mounted on both sides of the end of the wheel frame 12, and a shock absorber 14 rotatably mounted between the wheel frame 12 and the frame 11.

[0031] The frame 11 can be moved by human power or by known traction equipment. The shock absorber 14 is used to keep the frame 11 stable and reduce the impact of vibration on the measurement results.

[0032] The horizontal adjustment assembly includes a guide rail 22, which is vertically mounted on the center of the ground of the frame 11 by bolts. Several sliders 23 are slidably mounted on the guide rail 22. A fixing bolt 24 is threadedly connected to one side of the slider 23, and the end face of the fixing bolt 24 abuts against the guide rail 22.

[0033] There are three sliders 23 in total, and the guide rail 22 is used to limit the movement direction of the sliders 23. When the fixing bolts 24 are tightened, the movement of the sliders 23 can be restricted.

[0034] The measuring assembly includes a mounting bracket 25, which is vertically mounted on the bottom surface of the slider 23 by bolts. A rotating rod 26 is rotatably mounted on the tail end of the mounting bracket 25 via a rotating shaft. A detection wheel 27 is rotatably mounted on the tail end of the rotating rod 26 via a rotating shaft.

[0035] The number of mounting brackets 25 is the same as the number of sliders 23.

[0036] A first elastic element 28 is hinged between the top end of the rotating rod 26 and the top of the back of the mounting bracket 25. The elastic force of the first elastic element 28 can drive the tail end of the rotating rod 26 to rotate downwards, thereby causing the wheel surface of the detection wheel 27 to contact the ground. When the device moves, the detection wheel 27 rolls along the ground, and the height of the axis of the detection wheel 27 will change due to the undulation of the road surface. At this time, the rotating rod 26 will rotate, and the height of the top end of the rotating rod 26 will change. The direction of change is opposite to the vertical movement direction of the detection wheel 27, and the movement distance is directly proportional to the vertical movement distance of the detection wheel 27. The ratio is the ratio of the straight-line distance from the axis of the detection wheel 27 to the rotation point of the rotating rod 26 to the straight-line distance from the top end of the rotating rod 26 to the rotation point of the rotating rod 26.

[0037] A displacement sensor 29 is vertically mounted on the top front side of the mounting bracket 25. The bottom end of the displacement sensor 29 abuts against the top end of the rotating rod 26. The displacement sensor 29 is used to detect the height change of the top end of the rotating rod 26.

[0038] The displacement sensor 29 is connected to the detection box 21 via a wire, and the detection box 21 is placed on the top surface of the frame 11. Alternatively, a frame can be welded to the top surface of the frame 11 to hold the detection box 21.

[0039] The detection box 21 can record the data from the displacement sensor 29 and perform calculations to obtain the road surface smoothness.

[0040] The cleaning component 3 includes a blade holder 31, which is fixedly mounted on the top end of the rotating rod 26 by screws across the detection wheel 27. The top surface of the blade holder 31 is provided with a slot 32, in which a scraper 34 is slidably installed.

[0041] The tool holder 31 will not affect the rotation of the detection wheel 27, and can rotate with the rotating rod 26.

[0042] The blade 34 has an adjustment groove 35 in the middle and a limit screw 33 in the slot 32. The limit screw 33 passes through the adjustment groove 35 and is connected to a locking nut 36. The blade edge of the blade 34 is in contact with the wheel surface of the detection wheel 27.

[0043] When the locking nut 36 is loosened, the scraper 34 can slide along the groove 32. The adjusting groove 35 can limit the sliding distance and direction of the scraper 34, and the groove 32 can limit the rotation of the scraper 34, thereby adjusting the distance between the cutting edge of the scraper 34 and the surface of the detection wheel 27. After tightening the locking nut 36, the scraper 34 cannot move.

[0044] When the device moves, the detection wheel 27 rotates counterclockwise, and the wheel surface slides relative to the scraper 34. At this time, the dust, dirt and other impurities attached to the wheel surface of the detection wheel 27 will be scraped off by the scraper 34, keeping the wheel surface of the detection wheel 27 clean and flat.

[0045] In this embodiment, when using this device, the operator checks whether the surfaces of the moving wheel 13 and the detection wheel 27 are clean and flat. The detection box 21 is placed on the top surface of the frame 11, and the displacement sensor 29 is connected using wires.

[0046] Loosen the fixing bolt 24 and adjust the position and spacing of the three sliders 23 to adjust the position and spacing of the detection wheel 27. After adjustment, tighten the fixing bolt 24.

[0047] Using traction equipment, such as a vehicle, the moving component 1 is moved while being towed, with a towing speed not exceeding 12 kilometers per hour.

[0048] When the device moves, the detection wheel 27 rolls along the ground. The height of the axis of the detection wheel 27 will change due to the undulation of the road surface. At this time, the rotating rod 26 will rotate, and the height of the top of the rotating rod 26 will change. The direction of change is opposite to the vertical movement direction of the detection wheel 27, and the movement distance is directly proportional to the vertical movement distance of the detection wheel 27. The ratio is the ratio of the straight distance from the axis of the detection wheel 27 to the rotation point of the rotating rod 26 to the straight distance from the top of the rotating rod 26 to the rotation point of the rotating rod 26.

[0049] Because three detection wheels 27 are installed at the same time, the road surface undulation status at three different positions on the same straight line can be detected simultaneously. When a single detection wheel 27 encounters a small stone, the other detection wheels 27 will not change, thus eliminating abnormal data.

[0050] Meanwhile, when the device moves, the detection wheel 27 rotates counterclockwise, and the wheel surface slides relative to the scraper 34. At this time, the dust, dirt and other impurities attached to the wheel surface of the detection wheel 27 will be scraped off by the scraper 34, keeping the wheel surface of the detection wheel 27 clean and flat.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A road and bridge engineering flatness testing instrument, characterized in that, include: A moving component (1) is used for moving the device. A detection component (2) is provided in the middle of the moving component (1). The detection component (2) includes multiple detection wheels (27). Each detection wheel (27) is connected to a set of measuring components. The measuring components are used to measure the height change of the detection wheel (27). The measuring components are installed in the middle of the ground of the moving component (1) through a horizontal adjustment component. A cleaning component (3) is provided on the top surface of the detection wheel (27). The cleaning component (3) is used to clean the wheel surface of the detection wheel (27).

2. The road and bridge engineering flatness testing instrument as described in claim 1, characterized in that: The mobile component (1) includes a frame (11), a wheel frame (12) is rotatably mounted on the side of the frame (11), and movable wheels (13) are rotatably mounted on both sides of the end of the wheel frame (12). A shock absorber (14) is provided between the wheel frame (12) and the frame (11).

3. The road and bridge engineering flatness testing instrument as described in claim 2, characterized in that: The horizontal adjustment assembly includes a guide rail (22), which is vertically installed in the middle of the ground of the frame (11). Several sliders (23) are slidably installed on the guide rail (22). A fixing bolt (24) is threadedly connected to one side of the slider (23), and the end face of the fixing bolt (24) abuts against the guide rail (22).

4. The road and bridge engineering flatness testing instrument as described in claim 3, characterized in that: The measuring component includes a mounting bracket (25), which is vertically mounted on the bottom surface of the slider (23). A rotating rod (26) is rotatably mounted on the tail end of the mounting bracket (25), and a detection wheel (27) is rotatably mounted on the tail end of the rotating rod (26).

5. The road and bridge engineering flatness testing instrument as described in claim 4, characterized in that: A displacement sensor (29) is vertically mounted on the top of the front side of the mounting bracket (25). The bottom end of the displacement sensor (29) abuts against the top end of the rotating rod (26). The displacement sensor (29) is used to detect the height change of the top end of the rotating rod (26).

6. The road and bridge engineering flatness testing instrument as described in claim 4, characterized in that: The cleaning assembly (3) includes a blade holder (31), which is fixedly installed at the tail of the top surface of the rotating rod (26) across the detection wheel (27). The top surface of the blade holder (31) is provided with a slot (32), and a scraper (34) is slidably installed in the slot (32).

7. The road and bridge engineering flatness testing instrument as described in claim 6, characterized in that: The blade (34) is provided with an adjustment groove (35) in the middle, and a limiting screw (33) is provided in the slot (32). The limiting screw (33) passes through the adjustment groove (35) and is connected to a locking nut (36). The blade edge of the blade (34) is in contact with the wheel surface of the detection wheel (27).

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