Pavement flatness measuring device

Abstract

The utility model discloses a road surface flatness measuring device, which comprises a movable base, a detection assembly is arranged at the top of the movable base, the detection assembly comprises a mounting groove, a lifting screw rod is rotatably connected between the top of the movable base and the inner wall of the mounting groove, a spring is fixedly connected to the inner wall of an assembly block, and the spring is fixedly connected to the top of the movable base. One end of the spring is fixedly connected with a movable column, and the movable column is in sliding connection with the inner wall of the assembly block. A servo motor is started to drive a lifting lead screw to rotate, then the height of an assembling block is controlled, a movable column moves downwards to abut against the ground, when the device moves, if the deviation value of the large fluctuation concave-convex amount of a certain position of a road exceeds a safety range, the movable column is jacked and lifted, and then a marker post is lifted or descends when meeting a concave position; at the moment, an observer can visually judge where the road surface protrudes too high and needs to be leveled according to the fluctuation of the marker post.

Description

Technical Field

[0001] The utility model relates to the technical field of highway test detection, in particular to a road surface flatness measuring device. Background Art

[0002] Pavement flatness refers to the deviation value of the longitudinal bumps on the road surface. Pavement flatness is an important indicator in pavement evaluation and pavement construction acceptance. It mainly reflects the flatness of the longitudinal section curve of the pavement. Uneven pavement needs to be re-constructed and leveled. Even an inconspicuous bump on the road is a huge safety hazard for high-speed vehicles and may cause traffic accidents. Therefore, the pavement flatness needs to be tested before it is put into use to ensure that the deviation value of the bumps on the pavement flatness is within a safe range.

[0003] The flatness of existing roads is mostly assessed by using a level meter or manual visual inspection. However, a level meter can only assess whether a certain point on the road is flat, and visual inspection cannot accurately observe subtle bumps on the road surface due to the viewing angle of the human eye.

[0004] Therefore, the utility model provides a road surface flatness measuring device to solve the above-mentioned problem. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a road surface flatness measuring device, which solves the above problems. The device is placed on the road surface to be evaluated, and then the device is slowly pulled forward by a traction vehicle, and the servo motor is started to drive the lifting screw to rotate, thereby controlling the height of the assembly block to move the movable column down close to the ground. When the device moves, if the road has large undulations and the deviation value of the concave and convex amount exceeds the safe range, the movable column will be lifted up and the benchmark will also be lifted or it will be lowered when encountering a concave part. At this time, the observer can intuitively judge where the bulge of the road surface is too high and needs to be leveled by the height of the benchmark; the device is placed on a standard plane on the road, and the translation screw is driven to rotate by rotating the swivel, so that the nut block moves horizontally with the laser rangefinder. If the pulsed laser beam emitted by the laser rangefinder encounters a higher bulge, the distance at that place will be calculated, and the length of this distance is the position that needs to be marked for leveling.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a road surface flatness measuring device, comprising a mobile base, a detection component is arranged on the top of the mobile base, and an auxiliary component is also arranged on the top of the mobile base; the detection component comprises a mounting groove, the mounting groove is fixedly connected to the top of the mobile base, a lifting screw is rotatably connected between the top of the mobile base and the inner wall of the mounting groove, the outer walls of the two lifting screws are threadedly connected with an assembly block, the inner wall of the assembly block is fixedly connected with a spring, one end of the spring is fixedly connected with a movable column, one end of the movable column is fixedly installed with a wheel, the movable column is slidably connected to the inner wall of the assembly block, one end of the movable column is fixedly connected with a benchmark, and the benchmark is also slidably connected to the inner wall of the assembly block.

[0007] Furthermore, a servo motor is fixedly mounted on the top of the mounting groove, and an output shaft of the servo motor is fixedly connected to one end of the lifting screw rod.

[0008] By adopting the above technical solution, power is provided to drive the lifting screw to rotate.

[0009] Furthermore, a limiting groove is provided on the outer wall of the movable column, an auxiliary block is fixedly connected to the inner wall of the assembly block, and the auxiliary block is slidably connected to the inner wall of the limiting groove.

[0010] By adopting the above technical solution, it is mainly used to limit the movable column and prevent the movable column from shaking when the device moves.

[0011] Furthermore, the auxiliary component includes a protruding block, a translation screw is rotatably connected between the two protruding blocks, a nut block is threadedly connected to the outer wall of the translation screw, and a swivel is fixedly connected to one end of the translation screw.

[0012] The above technical solution is used to install other important components.

[0013] Furthermore, a limit rod is fixedly connected between the two protruding blocks, and the limit rod passes through the nut block and is movably connected.

[0014] The above technical solution is used to limit the nut block and prevent it from rotating.

[0015] Furthermore, a laser rangefinder is fixedly mounted on one side of the nut block.

[0016] The above technical solution is used to measure the location of road bulges. Beneficial Effects

[0017] The utility model provides a road surface flatness measuring device. Compared with the prior art, it has the following beneficial effects:

[0018] 1. The road surface flatness measuring device is placed on the road surface to be evaluated, and then the device is slowly pulled forward by a traction vehicle, and the servo motor is started to drive the lifting screw to rotate, thereby controlling the height of the assembly block to move the movable column down close to the ground. When the device moves, if the road has large undulations and the deviation value of the unevenness exceeds the safe range, the movable column will be lifted up and the benchmark will also be lifted or lowered when encountering a depression. At this time, the observer can intuitively judge where the road surface is too high and needs to be leveled by the ups and downs of the benchmark.

[0019] 2. The road surface flatness measuring device is placed on a standard plane on the road. The swivel is used to drive the translation screw to rotate, so that the nut block moves horizontally with the laser rangefinder. If the pulsed laser beam emitted by the laser rangefinder encounters a higher protrusion, the distance to that place will be calculated. The length of this distance is the position that needs to be marked for leveling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation scheme of the utility model or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a three-dimensional diagram of the external structure of the utility model;

[0022] Figure 2 This is a structural diagram of the utility model after removing the assembly blocks;

[0023] Figure 3 This utility model Figure 2 A magnified view of the structure at center A;

[0024] Figure 4 It is a structural sectional view of the utility model;

[0025] Figure 5 This utility model Figure 4 A magnified view of the structure at point B.

[0026] In the figure: 1. Mobile base; 2. Detection component; 21. Mounting slot; 22. Servo motor; 23. Lifting screw; 24. Assembly block; 25. Marking rod; 26. Movable column; 27. Spring; 28. Limiting slot; 29. ​​Auxiliary block; 210. Wheel; 3. Auxiliary component; 31. Protruding block; 32. Translation screw; 33. Nut block; 34. Laser rangefinder; 35. Limiting rod; 36. Swivel. DETAILED DESCRIPTION

[0027] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] The present application is further described in detail below through drawings and examples.

[0029] Reference Figures 1 to 5 The embodiment of the present application provides a road surface flatness measuring device, including a mobile base 1, a detection assembly 2 is arranged on the top of the mobile base 1, and an auxiliary assembly 3 is also arranged on the top of the mobile base 1; the detection assembly 2 includes a mounting groove 21, the mounting groove 21 is fixedly connected to the top of the mobile base 1, a lifting screw 23 is rotatably connected between the top of the mobile base 1 and the inner wall of the mounting groove 21, the outer walls of the two lifting screws 23 are threadedly connected to the assembly block 24, the inner wall of the assembly block 24 is fixedly connected to a spring 27, one end of the spring 27 is fixedly connected to a movable column 26, one end of the movable column 26 is fixedly installed with a wheel 210, the movable column 26 is slidably connected to the inner wall of the assembly block 24, one end of the movable column 26 is fixedly connected to a benchmark 25, and the benchmark 25 is also slidably connected to the inner wall of the assembly block 24. A servo motor 22 is fixedly installed on the top of the mounting groove 21, and the output shaft of the servo motor 22 is fixedly connected to one end of the lifting screw 23. The outer wall of the movable column 26 is provided with a limiting groove 28 , and the inner wall of the assembly block 24 is fixedly connected with an auxiliary block 29 , which is slidably connected to the inner wall of the limiting groove 28 .

[0030] During specific implementation: the device is placed on the road surface that needs to be evaluated, and then the device is slowly pulled forward by a towing vehicle, and the servo motor 22 is started to drive the lifting screw 23 to rotate, thereby controlling the height of the assembly block 24 to move the movable column 26 down close to the ground. When the device moves, if the road has a large undulation at a certain place and the deviation value of the unevenness exceeds the safe range, the movable column 26 will be lifted up and the benchmark 25 will also be lifted or lowered when encountering a depression. At this time, the observer can intuitively judge where the road surface is too high and needs to be leveled by the ups and downs of the benchmark 25.

[0031] Reference Figures 1 to 5In one aspect of this embodiment, the auxiliary component 3 includes a protruding block 31, a translation screw 32 is rotatably connected between the two protruding blocks 31, a nut block 33 is threadedly connected to the outer wall of the translation screw 32, and a swivel 36 is fixedly connected to one end of the translation screw 32. A limit rod 35 is fixedly connected between the two protruding blocks 31, and the limit rod 35 passes through; the nut block 33 is movably connected. A laser rangefinder 34 is fixedly installed on one side of the nut block 33.

[0032] During specific implementation: the device is placed on a standard plane on the road, and the translation screw 32 is driven to rotate by rotating the swivel 36, so that the nut block 33 and the laser rangefinder 34 move horizontally. If the pulsed laser beam emitted by the laser rangefinder 34 encounters a higher protrusion, the distance to the place will be calculated. The length of this distance is the position that needs to be marked for leveling.

[0033] All electrical equipment in this solution are powered by an external power supply.

[0034] Working principle: Place the device on the road surface that needs to be evaluated, then slowly pull the device forward through a towing vehicle, and start the servo motor 22 to drive the lifting screw 23 to rotate, thereby controlling the height of the assembly block 24 to move the movable column 26 down close to the ground. When the device moves, if the road has a large undulation and the deviation value of the bump amount exceeds the safe range, the movable column 26 will be lifted up and the benchmark 25 will also be lifted or lowered when encountering a depression. At this time, the observer can intuitively judge where the road surface is too high and needs to be leveled by the ups and downs of the benchmark 25. Place the device on a standard plane on the road, and drive the translation screw 32 to rotate by rotating the swivel 36, so that the nut block 33 moves horizontally with the laser rangefinder 34. If the pulsed laser beam emitted by the laser rangefinder 34 encounters a higher bulge, the distance to that place will be calculated. The length of this distance is the position that needs to be marked for leveling.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A road surface flatness measuring device, comprising a mobile base (1), characterized in that: A detection component (2) is arranged on the top of the mobile base (1), and an auxiliary component (3) is also arranged on the top of the mobile base (1); the detection component (2) comprises a mounting groove (21), the mounting groove (21) is fixedly connected to the top of the mobile base (1), a lifting screw rod (23) is rotatably connected between the top of the mobile base (1) and the inner wall of the mounting groove (21), the outer walls of the two lifting screw rods (23) are threadedly connected to an assembly block (24), the inner wall of the assembly block (24) is fixedly connected to a spring (27), one end of the spring (27) is fixedly connected to a movable column (26), one end of the movable column (26) is fixedly mounted with a wheel (210), the movable column (26) is slidably connected to the inner wall of the assembly block (24), one end of the movable column (26) is fixedly connected to a benchmark rod (25), and the benchmark rod (25) is also slidably connected to the inner wall of the assembly block (24).

2. A road surface flatness measuring device according to claim 1, characterized in that: A servo motor (22) is fixedly mounted on the top of the mounting groove (21), and an output shaft of the servo motor (22) is fixedly connected to one end of a lifting screw rod (23).

3. A road surface flatness measuring device according to claim 1, characterized in that: The outer wall of the movable column (26) is provided with a limiting groove (28), the inner wall of the assembly block (24) is fixedly connected with an auxiliary block (29), and the auxiliary block (29) is slidably connected to the inner wall of the limiting groove (28).

4. A road surface flatness measuring device according to any one of claims 1 to 3, characterized in that: The auxiliary component (3) comprises a protruding block (31), a translation screw (32) is rotatably connected between the two protruding blocks (31), a nut block (33) is threadedly connected to the outer wall of the translation screw (32), and one end of the translation screw (32) is fixedly connected to a swivel (36).

5. A road surface flatness measuring device according to claim 4, characterized in that: A limiting rod (35) is fixedly connected between the two protruding blocks (31), and the limiting rod (35) passes through the nut block (33) and is movably connected.

6. A road surface flatness measuring device according to claim 4, characterized in that: A laser rangefinder (34) is fixedly mounted on one side of the nut block (33).

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