A road surface smoothness detection device based on laser measurement

Abstract

The utility model provides a road surface flatness detection device based on laser measurement, which includes a bottom plate, mounting arms are arranged at the four corners of the bottom plate, a movable shaft is movably inserted in each mounting arm, a roller is rotatably arranged at the lower end of each movable shaft, wherein each movable shaft is sleeved with a compression spring, and each compression spring is located in the corresponding mounting arm; a detection mechanism includes a collection system and four groups of detection parts, each detection part includes a laser sensor arranged on the corresponding mounting arm and a laser reflection plate arranged on the corresponding movable shaft, and the laser sensor is used to detect the bumping frequency of the corresponding movable shaft; wherein each laser sensor is electrically connected to the collection system; by arranging the laser reflection plate on the movable shaft where the four rollers are installed, and then the laser sensor on the corresponding mounting arm, through the bumping during the rolling of the roller, makes the signal sent by the laser sensor to the laser reflection plate change, so as to detect the road surface flatness.

Description

Technical Field

[0001] The utility model relates to the technical field of road surface detection, in particular to a road surface flatness detection device based on laser measurement. Background Art

[0002] Road surface smoothness is one of the important indicators of road surface quality. At the same time, road surface smoothness quality directly reflects aspects such as driving safety during the operation and use of the highway. Highway road surface smoothness detection refers to the use of specified standard gauges to intermittently or continuously measure the unevenness of the road surface, and reflect the unevenness of the road surface through the detection data.

[0003] For example, a Chinese utility model with announcement number CN221029469U discloses "a highway roadbed and pavement flatness detection device", which includes a device plate, a first set of rods and a second set of rods rotatably connected to the top of the device plate, one end of the first set of rods passes through the device plate and extends to the bottom of the device plate, one end of the first set of rods extending to the bottom of the device plate is fixedly connected to a driven bevel gear, the bottom of the device plate is fixedly connected to two fixed plates, both fixed plates are rotatably connected to connecting rods, both ends of the connecting rods are provided with walking wheels, and an active bevel gear is fixedly sleeved on the outer surface of one of the connecting rods.

[0004] However, when the above device detects the road surface, since the contact surface between the detection wheel and the road surface is relatively long during movement, it is difficult to sensitively detect small roughness of the road surface, resulting in inaccurate detection data. Utility Model Content

[0005] In view of the deficiencies existing in the prior art, the utility model provides a road surface smoothness detection device based on laser measurement, which solves the problem of inaccurate data when detecting a slightly rough road surface in the prior art.

[0006] According to an embodiment of the utility model, a road pavement flatness detection device based on laser measurement includes a base plate, mounting arms are arranged at the four corners of the base plate, a movable shaft is movably inserted in each mounting arm, a roller is rotatably arranged at the lower end of each movable shaft, wherein each movable shaft is sleeved with a compression spring, and each compression spring is located in the corresponding mounting arm; a detection mechanism includes a collection system and four groups of detection parts, each detection part includes a laser sensor arranged on the corresponding mounting arm and a laser reflection plate arranged on the corresponding movable shaft, the laser sensor is used to detect the bump frequency of the corresponding movable shaft; wherein each laser sensor is electrically connected to the collection system; an adjustment mechanism is arranged on the base plate, and is used to adjust the bump amplitude of each movable shaft.

[0007] Compared with the prior art, the utility model has the following beneficial effects: a laser reflector is arranged on the movable shaft on which four rollers are installed, and then a laser sensor is mounted on the corresponding mounting arm, and the bumps during the rolling of the rollers cause the signal sent by the laser sensor to the laser reflector to change, so as to detect the road surface flatness, and the laser sensor sends the change signal to the acquisition system for processing, and then sends the data to the client to complete the road surface flatness detection, and by simulating a test driving of a car on the road, the bump amplitude of the wheel roller when measuring the road surface is detected by the laser sensor, so that the road surface flatness can be accurately and sensitively detected, so that the detected data is more accurate and reasonable, and during the detection process, when the roller passes through an uneven road section, the movable shaft will move up and down under the elastic force of the compression spring, and in this process, the laser reflector follows its up and down movement, and the laser sensor detects the changes in the laser reflector and transmits the signal to the acquisition system to complete the detection.

[0008] Preferably, each movable shaft is sleeved with a first limiting ring, and the corresponding compression spring abuts against the first limiting ring. The first limiting ring and the compression spring are both located in the corresponding mounting arm, and the compression spring is located on the upper side of the first limiting ring.

[0009] Preferably, a limiting block is provided on each first limiting ring, and a limiting groove is provided on the inner wall of the corresponding mounting arm, and the limiting block is located in the limiting groove.

[0010] Preferably, each mounting arm is provided with a second support arm, each laser sensor is arranged on the corresponding second support arm, each movable shaft upper end is provided with a first support arm, and each laser reflection plate is arranged on the side of the corresponding first support arm close to the laser sensor.

[0011] Preferably, the joint mechanism includes a threaded column rotatably set on the base plate, and an I-shaped frame threadedly connected to the threaded column. The four corners of the I-shaped frame are all mounted on the corresponding movable shaft and are all located on the upper side of the corresponding compression spring and abut against it. The four corners of the I-shaped frame can move up and down in the corresponding mounting arm.

[0012] Preferably, a detachable protective cover is provided on the bottom plate.

[0013] Preferably, a through slot is formed on the protective cover, and scale lines are arranged on the protective cover, the scale lines are located on one side of the through slot, and a pointer is arranged on one side of the I-shaped frame, and the pointer is located in the through slot.

[0014] Preferably, a transmission wheel is provided on the upper end of the threaded column and the protective cover, and the two transmission wheels are transmission-connected.

[0015] Preferably, a push rod is arranged on one side of the bottom plate, and a rubber sleeve is sleeved on the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model.

[0017] Figure 2 The figure is a schematic diagram of the explosion structure of an embodiment of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the detection mechanism in the embodiment of the utility model.

[0019] Figure 4 for Figure 2 Magnified view of area A.

[0020] In the above drawings: 1. base plate; 102. acquisition system; 103. mounting arm; 104. limit groove; 2. push rod; 201. rubber sleeve; 4. protective cover; 401. through groove; 402. scale line; 5. threaded column; 501. transmission wheel; 503. I-beam; 504. pointer; 6. movable shaft; 601. compression spring; 602. first limit ring; 603. limit block; 604. roller; 7. support arm one; 701. laser reflector; 702. laser sensor; 703. support arm two. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figures 1 to 4 As shown, the embodiment of the utility model proposes a road surface flatness detection device based on laser measurement, which includes a base plate 1, and mounting arms 103 are arranged at the four corners of the base plate 1, and a movable shaft 6 is movably inserted in each mounting arm 103, and a roller 604 is rotatably arranged at the lower end of each movable shaft 6, wherein each movable shaft 6 is sleeved with a compression spring 601, and each compression spring 601 is located in the corresponding mounting arm 103; a detection mechanism includes a collection system 102 and four groups of detection parts, each detection part includes a laser sensor 702 arranged on the corresponding mounting arm 103 and a laser reflection plate 701 arranged on the corresponding movable shaft 6, and the laser sensor 702 is used to detect the bump frequency of the corresponding movable shaft 6; wherein each laser sensor 702 is electrically connected to the collection system 102; an adjustment mechanism is arranged on the base plate 1, and is used to adjust the bump amplitude of each movable shaft 6.

[0023] The detailed working process of this embodiment is as follows: the mounting arm 103 is used to mount the movable shaft 6, the movable shaft 6 can move up and down in the mounting arm 103, the roller 604 is arranged on the movable shaft 6, and the two front rollers 604 can rotate around the axis of the movable shaft 6 to facilitate direction control.

[0024] A laser reflector 701 is arranged on the movable shaft 6 on which four rollers 604 are installed, and then a laser sensor 702 is mounted on the corresponding mounting arm 103. The bumps during the rolling of the roller 604 cause the signal sent by the laser sensor 702 to the laser reflector 701 to change, so as to detect the road surface flatness. The laser sensor 702 sends the change signal to the acquisition system 102 for processing, and then sends the data to the client to complete the road surface flatness detection. By simulating a car test driving on the road, the laser sensor 702 detects the bump amplitude of the roller 604 when measuring the road surface driving, and can accurately and sensitively detect the road surface flatness, so that the detected data is more accurate and reasonable. The detection principle is that when the roller 604 passes through an uneven road section, the movable shaft 6 will move up and down under the elastic force of the compression spring 601. In this process, the laser reflector 701 follows its up and down movement, and the laser sensor 702 detects the change of the laser reflector 701 and transmits the signal to the acquisition system 102 to complete the detection.

[0025] The adjustment mechanism is used to adjust the elastic force of the compression spring 601, and change the bumping amplitude of the roller 604 when driving on the measuring road surface, so that the roller 604 can be driven on various road surfaces.

[0026] The acquisition system 102 is an existing data processing device and will not be described in detail here.

[0027] like Figure 3 As shown, each movable shaft 6 is sleeved with a first limiting ring 602 , and the corresponding compression spring 601 abuts against the first limiting ring 602 . The first limiting ring 602 and the compression spring 601 are both located in the corresponding mounting arm 103 , and the compression spring 601 is located on the upper side of the first limiting ring 602 .

[0028] The detailed working process of this embodiment is as follows: the compression spring 601 abuts against the upper side of the first limiting ring 602, so that the movable shaft 6 can be reset after bumping. During the detection process, the compression spring 601 is required for support so that the movable shaft 6 can move up and down.

[0029] like Figure 3 As shown, each first limiting ring 602 is provided with a limiting block 603 , and the inner wall of the corresponding mounting arm 103 is provided with a limiting groove 104 , and the limiting block 603 is located in the limiting groove 104 .

[0030] The detailed working process of this embodiment is as follows: the rotation of the movable shaft 6 will cause the laser sensor 702 and the laser reflection plate 701 to be misaligned, resulting in the failure of the laser sensor 702 to detect. By setting the limit block 603 and the limit groove 104, the movable shaft 6 can move up and down while preventing the movable shaft 6 from rotating.

[0031] like Figure 4As shown, each mounting arm 103 is provided with a support arm 2 703 , each laser sensor 702 is provided on the corresponding support arm 2 703 , each upper end of the movable shaft 6 is provided with a support arm 1 7 , and each laser reflection plate 701 is provided on the side of the corresponding support arm 1 7 close to the laser sensor 702 .

[0032] The detailed working process of this embodiment is as follows: arm 1 7 is installed on the movable shaft 6, and a laser reflector plate 701 is installed on the side of arm 1 7 close to the laser sensor 702. The laser reflector plate 701 moves synchronously with the movable shaft 6, and the laser sensor 702 is fixed on the mounting arm 103 through arm 2 703. During the bumpy process, the relative distance between the laser sensor 702 and the laser reflector plate 701 will change, and the laser sensor 702 can sense its change and send its change signal to the acquisition system 102. The acquisition system 102 analyzes the road surface flatness based on its change signal.

[0033] like Figure 3 As shown, the adjustment mechanism includes a threaded column 5 rotatably set on the base plate 1, and an I-shaped frame 503 threadedly connected to the threaded column 5. The four corners of the I-shaped frame 503 are all mounted on the corresponding movable shaft 6, and are all located on the upper side of the corresponding compression spring 601 and abut against it. The four corners of the I-shaped frame 503 can move up and down in the corresponding mounting arm 103.

[0034] The detailed working process of this embodiment is: the smoothness of the road surface is reflected by the movement amplitude of the movable shaft 6, and the movement amplitude of the movable shaft 6 is controlled by the compression spring 601. In short, the elastic force of the compression spring 601 determines the movement amplitude of the movable shaft 6, and the I-shaped frame 503 can adjust the elastic force of the compression spring 601 and also change the movement amplitude of the movable shaft 6, so as to detect different road conditions to improve the scope of use and change the elastic force of the compression spring 601. The compression spring 601 is compressed by the I-shaped frame 503. The tighter the compression, the greater the elastic force and the smaller the movement amplitude of the movable shaft 6. When compression is needed, the threaded column 5 is rotated and the I-shaped frame 503 moves downward to compress the compression spring 601. If it needs to be relaxed, the threaded column 5 is rotated in the opposite direction.

[0035] like Figure 2 As shown, a detachable protective cover 4 is provided on the base plate 1 .

[0036] The detailed working process of this embodiment is as follows: the function of the protective cover 4 is to isolate rain and dust.

[0037] like Figure 2 As shown, a through slot 401 is formed on the protective cover 4 , and a scale line 402 is provided on the protective cover 4 , and the scale line 402 is located at one side of the through slot 401 , and a pointer 504 is provided on one side of the I-shaped frame 503 , and the pointer 504 is located in the through slot 401 .

[0038] The detailed working process of this embodiment is as follows: the function of the through slot 401 and the pointer 504 is to adjust the compression spring 601 visually. Since the protective cover 4 blocks the line of sight, the adjustment of the I-beam frame 503 cannot be observed. The pointer 504 is used for visualization. When adjusting the I-beam frame 503, the pointer 504 will move in the through slot 401, and the adjustment of the I-beam frame 503 can be observed through the scale line 402.

[0039] like Figure 2 As shown, a transmission wheel 501 is provided on the upper end of the threaded column 5 and the protective cover 4, and the two transmission wheels 501 are transmission-connected.

[0040] The detailed working process of this embodiment is as follows: the function of the transmission wheel 501 is to facilitate the rotation of the threaded column 5 .

[0041] like Figure 2 As shown, a push rod 2 is arranged on one side of the bottom plate 1, and a rubber sleeve 201 is sleeved on the push rod 2.

[0042] The detailed working process of this embodiment is as follows: the push rod 2 provides convenience for pushing the cart, and the rubber sleeve 201 improves comfort.

[0043] The implementation principle of the embodiment of the present application is: when the roller 604 passes through an uneven road section, bumps occur. During the bumps, the movable shaft 6 will move up and down under the elastic force of the compression spring 601, and the laser reflection plate 701 will follow its up and down movement. At this time, the relative distance between the laser sensor 702 and the laser reflection plate 701 will change, and the laser sensor 702 can sense its change and send its change signal to the acquisition system 102 to complete the detection.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A road surface roughness detection device based on laser measurement, characterized in that: include: A bottom plate (1) is provided with mounting arms (103) at four corners thereof, a movable shaft (6) is movably inserted in each of the mounting arms (103), a roller (604) is rotatably provided at the lower end of each of the movable shafts (6), a compression spring (601) is sleeved on each of the movable shafts (6), and each of the compression springs (601) is located in the corresponding mounting arm (103); A detection mechanism comprises a collection system (102) and four groups of detection components, each of the detection components comprises a laser sensor (702) arranged on the corresponding mounting arm (103) and a laser reflection plate (701) arranged on the corresponding movable shaft (6), the laser sensor (702) being used to detect the jolting frequency of the corresponding movable shaft (6); wherein each of the laser sensors (702) is electrically connected to the collection system (102); An adjustment mechanism is arranged on the base plate (1) and is used to adjust the vibration amplitude of each movable shaft (6).

2. The road surface roughness detection device based on laser measurement according to claim 1 is characterized in that: A first limiting ring (602) is sleeved on each of the movable shafts (6), and the corresponding compression spring (601) abuts against the first limiting ring (602). The first limiting ring (602) and the compression spring (601) are both located in the corresponding mounting arm (103), and the compression spring (601) is located on the upper side of the first limiting ring (602).

3. The road surface roughness detection device based on laser measurement according to claim 2 is characterized in that: A limiting block (603) is provided on each of the first limiting rings (602), and a limiting groove (104) is provided on the inner wall of the corresponding mounting arm (103), and the limiting block (603) is located in the limiting groove (104).

4. The road surface roughness detection device based on laser measurement according to claim 3 is characterized in that: Each of the mounting arms (103) is provided with a second support arm (703), each of the laser sensors (702) is provided on the corresponding second support arm (703), each of the upper ends of the movable shafts (6) is provided with a first support arm (7), and each of the laser reflection plates (701) is provided on a side of the corresponding first support arm (7) close to the laser sensor (702).

5. The road surface roughness detection device based on laser measurement according to claim 4 is characterized in that: The adjustment mechanism comprises a threaded column (5) rotatably arranged on the base plate (1), and an I-shaped frame (503) threadedly connected to the threaded column (5); the four corners of the I-shaped frame (503) are sleeved on the corresponding movable shaft (6) and are located on the upper side of and abut against the corresponding compression spring (601); the four corners of the I-shaped frame (503) can move up and down in the corresponding mounting arm (103).

6. The road surface roughness detection device based on laser measurement according to claim 5 is characterized in that: A detachable protective cover (4) is provided on the bottom plate (1).

7. The road surface roughness detection device based on laser measurement according to claim 6 is characterized in that: The protective cover (4) is provided with a through slot (401), the protective cover (4) is provided with a scale line (402), the scale line (402) is located on one side of the through slot (401), and a pointer (504) is provided on one side of the I-shaped frame (503), the pointer (504) is located in the through slot (401).

8. The road surface roughness detection device based on laser measurement according to claim 7 is characterized in that: A transmission wheel (501) is provided on the upper end of the threaded column (5) and the protective cover (4), and the two transmission wheels (501) are transmission-connected.

9. The road surface roughness detection device based on laser measurement according to claim 1, characterized in that: A push rod (2) is provided on one side of the bottom plate (1), and a rubber sleeve (201) is sleeved on the push rod (2).

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