A road smoothness detection device and detection method

Abstract

The present invention relates to the technical field of flatness detection devices, and in particular to a road flatness detection device and detection method. Its technical solution includes: a frame and an extension frame slidably mounted on the frame, the frame and the extension frame constitute a vehicle frame, and also includes: a roadblock shielding component mounted on the vehicle frame, when the wheel assembly component contacts the concave and convex surface and drives the vehicle frame to tilt, the roadblock shielding component drives the detection component to move in the opposite direction of the tilting direction, and controls the ground clearance of the detection component to always remain equal. The present invention uses the roadblock shielding component to move the measuring wheel located in the middle of the frame downward when one end of the frame rotates, and the downward movement distance is half of the rising height of the rising end of the frame, which can avoid the influence of the rising or falling end of the frame on the measuring wheel, and thus can effectively improve the accuracy of the measuring wheel when measuring irregular roads, and can effectively improve the accuracy of calculating the road surface flatness data.

Description

Technical Field

[0001] The present invention relates to the technical field of flatness detection devices, and in particular to a road flatness detection device and a detection method. Background Art

[0002] The profile detection of the road surface usually refers to the measurement and analysis of the uneven details of the road surface to evaluate the flatness and quality of the road surface. This detection is crucial to ensure the safety and comfort of the road. Generally, the road surface is measured and calculated by an eight-wheel flatness tester, which is towed by other vehicles during the test and travels at a certain speed (usually 5km / h, not more than 12km / h). The eight-wheel flatness tester is in direct contact with the ground through the measuring wheels, and can sense the unevenness of the road surface through the measuring wheels.

[0003] The eight-wheel flatness tester is generally set to a retractable form. This is because the longer the body of the eight-wheel flatness tester, the smaller the impact of the support wheels on both sides of the body on the detection components in the middle of the body when bumps occur. This is because when the support wheels bump, they will drive the frame to move up and down, and the up and down moving frame will drive the detection components to move, which will in turn affect the height of the detection wheels, which is not conducive to improving the accuracy of detecting irregular road surfaces. Summary of the invention

[0004] The purpose of the present invention is to provide a road smoothness detection device and detection method in view of the problems existing in the background technology.

[0005] The technical solution of the present invention is: a road flatness detection device, comprising a frame and an extension frame slidably mounted on the frame, the frame and the extension frame constitute a frame, both ends of the frame are equipped with wheel group components for supporting the frame, the middle part of the frame is equipped with a detection component for calculating the ground surface profile, and also includes:

[0006] A roadblock shielding component mounted on the frame, wherein when the wheel assembly contacts the concave-convex surface and drives the frame to tilt, the roadblock shielding component drives the detection component to move in the opposite direction of the tilting direction, and controls the ground clearance of the detection component to always maintain an equal state;

[0007] The rotating adjustment component is installed on the frame. When the frame rotates a certain angle, the rotating adjustment component controls the detection component to rotate in the opposite direction and at the same angle, and controls the detection component to always be parallel to the plumb line.

[0008] Optionally, one end of the frame and the extension frame are both rotatably mounted with a support seat, both ends of one of the support seats are rotatably mounted with a first roller frame, both ends of the first roller frame are rotatably mounted with two first support wheels, both ends of the other support seat are rotatably mounted with a second roller frame, one end of the second roller frame is rotatably mounted with a second support wheel, the other end of the second roller frame is rotatably mounted with a steering wheel seat, the steering wheel seat is rotatably mounted with a third support wheel, and the steering wheel seat is mounted with a traction connecting piece.

[0009] Optionally, the traction connection includes a first connecting rod rotatably mounted on the two steering wheel seats, a second connecting rod rotatably mounted on the first connecting rod, a third connecting rod rotatably mounted on the two second connecting rods, and a traction rod rotatably mounted on the third connecting rod and the first connecting rod.

[0010] Optionally, the frame is installed with a fastening assembly for fixing the extension frame, and the fastening assembly includes a screw rod threadedly connected to both ends of the frame, one end of the screw rod is fixedly installed with a handle and the other end is rotatably installed with a fastening pad.

[0011] Optionally, the detection component includes a support plate rotatably mounted on the frame, wherein two ends of the support plate are provided with sliding grooves, and a lifting plate is slidably mounted in the two sliding grooves, a connecting seat is fixedly mounted on the lifting plate, a displacement sensor is slidably mounted on the connecting seat, an adjusting plate is fixedly mounted on the displacement sensor, one end of the adjusting plate is slidably mounted on a guide rod, the guide rod is slidably connected to the connecting seat, the other end of the adjusting plate is rotatably mounted on an adjusting rod, and the adjusting rod is threadedly connected to the connecting seat, a first magnetic sheet is fixedly mounted on the detection shaft of the displacement sensor, a sliding rod is slidably mounted on the connecting seat, a measuring wheel seat is fixedly mounted on the sliding rod, a measuring wheel is rotatably mounted on the measuring wheel seat, a plurality of springs are fixedly mounted between the connecting seat and the measuring wheel seat, and a second magnetic sheet is fixedly mounted on one end of the sliding rod close to the first magnetic sheet.

[0012] Optionally, the roadblock shielding component includes a rotating block rotatably mounted at both ends of a support seat, a first telescopic rod is fixedly mounted between two rotating blocks located on the same side, a driving rod is fixedly mounted on two of the rotating blocks located on the same side, a sliding bar is rotatably mounted on the driving rod, a guide block is rotatably mounted on one end of the support seat, a rocker arm is fixedly mounted on the guide block, a sliding sleeve is fixedly mounted on the rocker arm, the sliding sleeve is slidably connected to the sliding bar, a pressure rod is fixedly mounted on the sliding bar, a second telescopic rod is fixedly mounted on one end of the support seat, the second telescopic rod is fixedly mounted on the first oil cylinder, a blocking block is slidably mounted in the first oil cylinder, the blocking block divides the first oil cylinder into an upper oil chamber and a lower oil chamber, the upper oil chamber is connected to an upper connecting nozzle, and the lower oil chamber is connected to a lower connecting nozzle.

[0013] Optionally, the roadblock shielding component also includes a push block fixedly mounted on the lifting plate, a transmission rod fixedly mounted on the push block, a second oil cylinder fixedly mounted on the frame, a spacer block slidably mounted in the second oil cylinder, the spacer block divides the second oil cylinder into a first oil chamber located on the upper side and a second oil chamber located on the lower side, the spacer block is fixedly connected to the transmission rod, the first oil chamber is connected to two first connecting heads, the second oil chamber is connected to two second connecting heads, the upper connecting nozzle corresponds one-to-one with the first connecting head and is connected through a first oil pipe, the lower connecting nozzle corresponds one-to-one with the second connecting head and is connected through a second oil pipe, and the first oil cylinder, the second oil cylinder, the first oil pipe and the second oil pipe are all filled with hydraulic oil.

[0014] Optionally, the rotation adjustment component includes a base plate fixedly mounted on one end of the support seat, an oil ring is fixedly mounted on the base plate and the frame, the oil ring on the displacement frame is in a coaxial position with the rotation connection between the support plate and the frame, an oil groove is provided in the oil ring, a spacer block is fixedly mounted in the oil groove, a sealing groove is provided in the oil ring, a sealing ring is rotatably mounted in the sealing groove, a stopper is fixedly mounted on the sealing ring, the stopper and the spacer block separate the oil groove into a left oil chamber and a right oil chamber, the left oil chamber is connected to a first pipe joint, the right oil chamber is connected to a second pipe joint, and the first pipe joint and the second pipe joint located on the frame are both connected to a three-way joint.

[0015] Optionally, a connecting column is coaxially fixedly installed on the sealing ring, two of the connecting columns are fixedly connected to two of the rotating blocks, and the other connecting column is fixedly connected to the support plate.

[0016] Optionally, the first pipe joint on the oil ring connected to the rotating block is communicated with the first pipe joint located on the frame through a third oil pipe, and the second pipe joint on the oil ring connected to the rotating block is communicated with the second pipe joint located on the frame through a fourth oil pipe.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] The present invention uses a roadblock shielding component, and when one end of the frame is rotated, the measuring wheel located in the middle of the frame can be moved downward, and the downward movement distance is half of the rising height of the rising end of the frame, which can avoid the influence of the rising or falling end of the frame on the measuring wheel, further effectively reduce the length of the vehicle body and ensure the accuracy of measurement, and can make the gap between the measuring wheel and the measuring ground reference plane always remain equal, thereby effectively improving the accuracy of the measuring wheel when measuring irregular road surfaces, and improving the accuracy of calculating road surface flatness data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1The structural diagram of the road smoothness detection device is given. Figure 1 ;

[0020] Figure 2 The structural diagram of the road smoothness detection device is given. Figure 2 ;

[0021] Figure 3 The structural diagram of the road smoothness detection device is given. Figure 3 ;

[0022] Figure 4 The structural diagram of the road smoothness detection device is given. Figure 4 ;

[0023] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0024] Figure 6 Schematic diagram of the structure of the detection component Figure 1 ;

[0025] Figure 7 Schematic diagram of the structure of the detection component Figure 2 ;

[0026] Figure 8 Schematic diagram of the structure of the detection component Figure 3 ;

[0027] Fig. 9 Schematic diagram of the structure of the detection component Figure 4 ;

[0028] Fig.10 Provide a schematic diagram of the structure of the roadblock shielding components Figure 1 ;

[0029] Fig.11 Provide a schematic diagram of the structure of the roadblock shielding components Figure 2 ;

[0030] Fig.12 Provide a schematic diagram of the structure of the roadblock shielding components Figure 3 ;

[0031] Fig.13 Provide a schematic diagram of the structure of the roadblock shielding components Figure 4 ;

[0032] Fig.14 Provide a schematic diagram of the structure of the roadblock shielding components Figure 5 ;

[0033] Fig.15 Provide a schematic diagram of the structure of the roadblock shielding components Figure 6 ;

[0034] Fig.16The structure diagram of the rotary adjustment component of the present invention is shown in FIG. Figure 1 ;

[0035] Fig.17 The structure diagram of the rotary adjustment component of the present invention is shown in FIG. Figure 2 ;

[0036] Fig.18 The structure diagram of the rotary adjustment component of the present invention is shown in FIG. Figure 3 ;

[0037] Fig.19 The structure diagram of the rotary adjustment component of the present invention is shown in FIG. Figure 4 ;

[0038] Fig. 20 The structure diagram of the rotary adjustment component of the present invention is shown in FIG. Figure 5 ;

[0039] Fig.21 The structure diagram of the rotary adjustment component of the present invention is shown in FIG. Figure 6 ;

[0040] Fig. 22 A schematic diagram of the rising height of the end portion of the first telescopic rod when the first telescopic rod rotates at equal angles is given;

[0041] Fig.23 A relationship diagram between the rising distance of the end of the first telescopic rod and the rising distance of each position is given.

[0042] Reference numerals: 1, frame; 101, extension frame; 102, support seat; 103, first roller frame; 104, first support wheel; 105, second roller frame; 106, second support wheel; 107, steering wheel seat; 108, third support wheel; 109, first connecting rod; 110, second connecting rod; 111, third connecting rod; 112, traction rod; 2, screw rod; 201, handle; 202, fastening pad; 3, support plate; 301, slideway; 302, lifting plate; 303, connecting seat; 304, displacement sensor; 305, adjustment plate; 306, guide rod; 307, adjustment rod; 308, first magnetic sheet; 309, slide bar; 310, measuring wheel seat; 311, measuring wheel; 312, spring; 313, second magnetic sheet; 4, rotating block; 401, first telescopic rod; 402, driving rod; 403, slide bar; 404, guide block; 4 05, rocker arm; 406, sleeve; 407, pressure rod; 408, second telescopic rod; 409, first oil cylinder; 410, blocking block; 4091, upper oil chamber; 4092, lower oil chamber; 411, upper connecting nozzle; 412, lower connecting nozzle; 413, push block; 414, transmission rod; 415, second oil cylinder; 4151, first oil chamber; 4152, second oil chamber; 416, spacer; 417, first connector; 418, The second connector; 419, the first oil pipe; 420, the second oil pipe; 5, the base plate; 501, the oil ring; 502, the oil groove; 5021, the left oil chamber; 5022, the right oil chamber; 503, the spacer block; 504, the sealing groove; 505, the sealing ring; 506, the stopper; 507, the connecting column; 508, the first pipe joint; 509, the second pipe joint; 510, the three-way joint; 511, the third oil pipe; 512, the fourth oil pipe. DETAILED DESCRIPTION

[0043] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] Embodiment 1, as Figures 1 to 15 as well as Figure 22 to Figure 23As shown, a road flatness detection device proposed by the present invention includes a frame 1 and an extension frame 101 slidably mounted on the frame 1. The frame 1 and the extension frame 101 constitute a vehicle frame. The arrangement of the extension frame 101 can effectively increase the length of the vehicle frame and facilitate the retraction and extension of the vehicle frame. Wheel set components for supporting the vehicle frame are installed at both ends of the vehicle frame. The vehicle frame is supported by the wheel set components and can be moved smoothly on the road surface. A support seat 102 is rotatably mounted on one end of the frame 1 and the extension frame 101. A first roller frame 103 is rotatably mounted on both ends of one of the support seats 102. Two first support wheels 104 are rotatably mounted on both ends of the first roller frame 103. One end of the vehicle frame can be supported by multiple first support wheels 104. The other supporting seat 102 has second roller frames 105 rotatably mounted at both ends, a second supporting wheel 106 rotatably mounted at one end of the second roller frame 105, a steering wheel seat 107 rotatably mounted at the other end of the second roller frame 105, a third supporting wheel 108 rotatably mounted on the steering wheel seat 107, and a traction connection member mounted on the steering wheel seat 107. The other end of the frame can be supported by the second supporting wheel 106 and the third supporting wheel 108, and the frame can be connected to the tractor by the traction connection member.

[0045] Further, the traction connection member includes a first link 109 rotatably mounted on two steering wheel seats 107, a second link 110 rotatably mounted on the first link 109, a third link 111 rotatably mounted on the two second links 110, and a traction rod 112 rotatably mounted on the third link 111 and the first link 109. The frame can be driven to move by connecting the traction rod 112 to the tractor, and when the traction rod 112 rotates, the first link 109 can be driven to rotate, and the rotating first link 109 can drive the third support wheel 108 to rotate, thereby facilitating the steering of the frame.

[0046] The frame 1 is equipped with a fastening assembly for fixing the extension frame 101, and the fastening assembly includes a screw rod 2 threadedly connected to both ends of the frame 1, and a handle 201 is fixedly installed on one end of the screw rod 2, and a fastening pad 202 is rotatably installed on the other end. The screw rod 2 is driven to rotate by rotating the handle 201, and the rotating screw rod 2 will drive the fastening pad 202 to move toward or away from the extension frame 101, that is, the extension frame 101 can be fixed by the fastening pad 202, and the position of the extension frame 101 can be positioned to prevent the relative movement between the extension frame 101 and the frame.

[0047] In this embodiment, a detection component for calculating the ground surface profile is installed in the middle of the frame, and the detection component includes a support plate 3 rotatably installed on the frame 1, and two ends of the support plate 3 are provided with slide grooves 301, and lifting plates 302 are slidably installed in the two slide grooves 301, and a connecting seat 303 is fixedly installed on the lifting plate 302, and a displacement sensor 304 is slidably installed on the connecting seat 303, and an adjustment plate 305 is fixedly installed on the displacement sensor 304. A guide rod 306 is slidably installed on one end of the adjustment plate 305, and the guide rod 306 is slidably connected to the connecting seat 303. An adjusting rod 307 is rotatably installed on the other end of the adjusting plate 305, and the adjusting rod 307 is threadedly connected to the connecting seat 303. A first magnetic sheet 308 is fixedly installed on the detection shaft of the displacement sensor 304. A sliding rod 309 is slidably installed on the connecting seat 303, and a measuring wheel seat 310 is fixedly installed on the sliding rod 309. A measuring wheel 311 is rotatably installed on the measuring wheel seat 310. A plurality of springs 312 are fixedly installed between the connecting seat 303 and the measuring wheel seat 310, and a second magnetic sheet 313 is fixedly installed on one end of the sliding rod 309 close to the first magnetic sheet 308. Through the mutual attraction between the first magnetic sheet 308 and the second magnetic sheet 313, the slide bar 309 can be connected to the detection axis of the displacement sensor 304. Under the action of the spring 312, the measuring wheel 311 can always be in contact with the ground. By making the measuring wheel 311 contact with the irregular ground, the slide bar 309 can be driven to rise by the measuring wheel 311. The rising slide bar 309 will drive the displacement sensor 304 to move. The flatness of the road surface can be measured by the displacement sensor 304, and the flatness of the road surface can be calculated based on the measured data.

[0048] Before inspection, the displacement sensor 304 needs to be zeroed. By rotating the adjustment rod 307, the adjustment plate 305 can be driven to move up and down. The lifting adjustment plate 305 can drive the height of the displacement sensor 304 to be adjusted, and then the displacement sensor 304 can be zeroed.

[0049] The detection device of this embodiment also includes a roadblock shielding component installed on the frame. When the wheel assembly component contacts the concave and convex surface and drives the frame to tilt, the roadblock shielding component drives the detection component to move in the opposite direction of the tilting direction, and controls the ground clearance of the detection component to always remain equal. It should be noted that when one end of the frame rotates, the frame will rotate around the rotation connection between the other end support seat 102 and the first roller frame 103 or the second roller frame 105 as the axis. And the height of the rise of the middle part of the frame is half of the height of the rise of the rising end of the frame, refer to Fig.23It can be concluded that when the frame rises, the rising distance between its end and the center is in linear proportion, that is, L1=2L2=3L3. It can be concluded that when one end of the frame rises, the middle part must drop half of the rising distance of the end to avoid the influence of the rising or falling end of the frame on the measuring wheel 311.

[0050] Furthermore, the roadblock shielding component includes a rotating block 4 rotatably mounted on both ends of the support seat 102, a first telescopic rod 401 is fixedly mounted between the two rotating blocks 4 on the same side, a driving rod 402 is fixedly mounted on two of the rotating blocks 4 on the same side, a sliding bar 403 is rotatably mounted on the driving rod 402, a guide block 404 is rotatably mounted on one end of the support seat 102, a swing rod 405 is fixedly mounted on the guide block 404, a sliding sleeve 406 is fixedly mounted on the swing rod 405, and the sliding sleeve 40 6 is slidably connected with the slide bar 403, a pressure rod 407 is fixedly installed on the slide bar 403, a second telescopic rod 408 is fixedly installed on one end of the support seat 102, a first oil cylinder 409 is fixedly installed on the second telescopic rod 408, a block 410 is slidably installed in the first oil cylinder 409, and the block 410 divides the first oil cylinder 409 into an upper oil chamber 4091 and a lower oil chamber 4092, an upper connecting nozzle 411 is connected to the upper oil chamber 4091, and a lower connecting nozzle 412 is connected to the lower oil chamber 4092. It should be noted that the driving rod 402, the slide bar 403, the swing rod 405, and the connecting line of the end of the swing rod 405 and the driving rod 402 form a parallelogram, and the connecting line of the frame and the first telescopic rod 401 and the connecting line of the frame and the end of the first telescopic rod 401 also form a parallelogram.

[0051] When one end of the frame encounters a bumpy road surface and causes the other end of the frame to rise, the rising end here is one end of the third supporting wheel 108, and at this time the rising end will drive the first telescopic rod 401 to rotate, and the axis of rotation of the first telescopic rod 401 is the rotation connection between the first telescopic rod 401 and the first roller frame 103, the rotating first telescopic rod 401 will drive the rotating block 4 to rotate, the rotating rotating block 4 will drive the driving rod 402 to rise, the rising driving rod 402 will drive the pressure rod 407 to rise, and the rising pressure rod 407 can drive the blocking block 410 to rise and fall, thereby changing the volume inside the upper oil chamber 4091 and the lower oil chamber 4092.

[0052] It should be noted that the height to which the pressure rod 407 rises depends on the ratio of the first telescopic rod 401 to the driving rod 402. At this time, the ratio of the first telescopic rod 401 to the driving rod 402 is 20. If one end of the first telescopic rod 401 rises by 10 cm, the driving rod 402 rises by 0.5 cm, and the height to which the measuring wheel 311 needs to descend is 5 cm.

[0053] Among them, the roadblock shielding component also includes a push block 413 fixedly installed on the lifting plate 302, a transmission rod 414 is fixedly installed on the push block 413, a second oil cylinder 415 is fixedly installed on the frame 1, a spacer 416 is slidably installed in the second oil cylinder 415, the spacer 416 divides the second oil cylinder 415 into a first oil chamber 4151 located on the upper side and a second oil chamber 4152 located on the lower side, the spacer 416 is fixedly connected to the transmission rod 414, the first oil chamber 4151 is connected to two first connectors 417, the second oil chamber 4152 is connected to two second connectors 418, the upper connecting nozzle 411 corresponds to the first connector 417 one-to-one and is connected through the first oil pipe 419, the lower connecting nozzle 412 corresponds to the second connector 418 one-to-one and is connected through the second oil pipe 420, and the first oil cylinder 409, the second oil cylinder 415, the first oil pipe 419 and the second oil pipe 420 are all filled with hydraulic oil. When one end of the frame rises, the blocking block 410 will be driven to rise, and the hydraulic oil inside the upper oil chamber 4091 will be squeezed into the first oil chamber 4151, so that the spacer block 416 can drive the transmission rod 414 to descend, and the transmission of the transmission rod 414 can drive the push block 413 and the connecting seat 303 to descend, and then the measuring wheel 311 can be driven to move downward.

[0054] Furthermore, in order to meet the requirement that when one end of the first telescopic rod 401 rises 10 cm, the measuring wheel 311 needs to descend by 5 cm, the ratio of the internal cross-sectional area of ​​the first oil cylinder 409 to that of the second oil cylinder 415 is 20. At this time, the length of the hydraulic oil that enters the second oil cylinder 415 through the first oil cylinder 409 will increase 20 times, thereby meeting the requirement that when one end of the first telescopic rod 401 rises 10 cm, the measuring wheel 311 needs to descend by 5 cm.

[0055] Furthermore, the function of the driving rod 402 needs to be explained here, referring to Fig. 22 When the first telescopic rod 401 rotates, every time the first telescopic rod 401 rotates a certain angle θ, the rising height of the first telescopic rod 401 is not in a linear proportional relationship. Here, H1>H2>H3>H4>H5. Therefore, it is necessary to use the driving rod 402 to proportionally scale the rising height of the end of the first telescopic rod 401 to achieve precise transmission.

[0056] The working principle of this embodiment is as follows: through the mutual attraction between the first magnetic sheet 308 and the second magnetic sheet 313, the slide bar 309 can be connected to the detection axis of the displacement sensor 304, and the measuring wheel 311 can always be in contact with the ground under the action of the spring 312. By making the measuring wheel 311 contact with the irregular ground, the slide bar 309 can be driven to rise by the measuring wheel 311, and the rising slide bar 309 will drive the displacement sensor 304 to move. The flatness of the road surface can be measured by the displacement sensor 304, and the flatness of the road surface can be calculated based on the measured data.

[0057] When one end of the frame encounters a bumpy road surface and causes one end of the frame to rise, the rising end here is one end of the third supporting wheel 108, and at this time the rising end will drive the first telescopic rod 401 to rotate, and the rotation axis of the first telescopic rod 401 is the rotation connection between the first telescopic rod 401 and the first roller frame 103, the rotating first telescopic rod 401 will drive the rotating block 4 to rotate, the rotating rotating block 4 will drive the driving rod 402 to rise, the rising driving rod 402 will drive the pressure rod 407 to rise, and the rising pressure rod 407 can drive the blocking block 410 to rise and fall, and will drive the blocking block 410 to rise, and the hydraulic oil in the upper oil chamber 4091 can be squeezed into the first oil chamber 4151, so that the spacer block 416 can drive the transmission rod 414 to descend, and the transmission of the transmission rod 414 can drive the push block 413 and the connecting seat 303 to descend, and then the measuring wheel 311 can be driven to move downward.

[0058] Embodiment 2, as Figures 1 to 4 as well as Figures 16 to 21 As shown, based on the first embodiment, the road flatness detection device of this embodiment further includes a rotation adjustment component, which is mounted on the frame. When the frame rotates a certain angle, the rotation adjustment component controls the detection component to rotate in the opposite direction and at the same angle, and controls the detection component to always be parallel to the plumb line. When the frame rotates on an irregular road surface, it will drive the measuring wheel 311 to rotate, and in order to ensure the accuracy of the measurement, the measuring wheel 311 should always be in a vertical state in this solution.

[0059] In this embodiment, the rotation adjustment component includes a base plate 5 fixedly mounted on one end of the support seat 102, and an oil ring 501 is fixedly mounted on the base plate 5 and the frame 1. The oil ring 501 on the displacement frame 1 is in a coaxial position with the rotation connection between the support plate 3 and the frame 1. An oil groove 502 is provided in the oil ring 501, and a spacer block 503 is fixedly mounted in the oil groove 502. A sealing groove 504 is provided in the oil ring 501, and a sealing ring 505 is rotatably mounted in the sealing groove 504. A stopper 506 is fixedly mounted on the sealing ring 505. The stopper 506 and the spacer block 503 divide the oil groove 502 into a left oil chamber 5021 and a right oil chamber 5022. The left oil chamber 5021 is connected to a first pipe joint 508, and the right oil chamber 5022 is connected to a second pipe joint 509. The first pipe joint 508 and the second pipe joint 509 located on the frame 1 are both connected to a three-way joint 510. The oil ring 501 can be sealed by the sealing ring 505 to prevent the hydraulic oil from leaking. When the sealing ring 505 rotates, it will drive the block 506 to rotate. The rotating block 506 will squeeze the left oil chamber 5021 and the right oil chamber 5022, thereby adjusting the internal volume of the left oil chamber 5021 and the right oil chamber 5022.

[0060] Furthermore, a connecting column 507 is coaxially fixedly installed on the sealing ring 505, wherein two connecting columns 507 are fixedly connected to two of the rotating blocks 4, and the other connecting column 507 is fixedly connected to the support plate 3. The first pipe joint 508 on the oil ring 501 connected to the rotating block 4 is communicated with the first pipe joint 508 located on the frame 1 through the third oil pipe 511, and the second pipe joint 509 on the oil ring 501 connected to the rotating block 4 is communicated with the second pipe joint 509 located on the frame 1 through the fourth oil pipe 512. When the frame rotates on an irregular road surface, it will drive the first telescopic rod 401 and the rotating block 4 to rotate, and the rotating rotating block 4 will drive the connecting column 507 to rotate. When one of the rotating blocks 4 rotates to the right, it will squeeze the right oil chamber 5022, and the hydraulic oil inside the right oil chamber 5022 will be pressed into the right oil chamber 5022 connected to the support plate 3 through the fourth oil pipe 512. At this time, it will drive the connecting column 507 connected to the support plate 3 to move to the left, so that the measuring wheel 311 can be rotated in the opposite direction of the frame when the frame rotates, and the specifications of multiple oil rings 501 are the same, so that the rotation angle of the frame and the rotation angle of the measuring wheel can be kept equal and in opposite directions, so that the measuring wheel 311 can always be in a vertical state, thereby effectively improving the accuracy of the measuring wheel 311 in measuring the road surface, and can effectively improve the detection accuracy of irregular roads.

[0061] The working principle in this embodiment is as follows: the oil ring 501 can be sealed by the sealing ring 505 to prevent the leakage of hydraulic oil. When the sealing ring 505 rotates, the stopper 506 will be driven to rotate, and the rotating stopper 506 will squeeze the left oil chamber 5021 and the right oil chamber 5022, thereby adjusting the volume inside the left oil chamber 5021 and the right oil chamber 5022. When the frame rotates on an irregular road surface, the first telescopic rod 401 and the rotating block 4 will be driven to rotate, and the rotating rotating block 4 will drive the connecting column 507 to rotate. When one of the rotating blocks 4 rotates to the right, it will squeeze the right oil chamber 5022, and the hydraulic oil inside the right oil chamber 5022 will be pressed into the right oil chamber 5022 connected to the support plate 3 through the fourth oil pipe 512. At this time, the connecting column 507 connected to the support plate 3 will be driven to move to the left, thereby enabling the measuring wheel 311 to rotate in the opposite direction of the frame when the frame rotates.

[0062] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A road roughness detection device, comprising a frame (1) and an extension frame (101) slidably mounted on the frame (1), wherein the frame (1) and the extension frame (101) constitute a vehicle frame, both ends of the vehicle frame are mounted with wheel assembly components for supporting the vehicle frame, and a detection component for calculating the ground surface profile is mounted in the middle of the vehicle frame, characterized in that: Also includes: A roadblock shielding component mounted on the frame, wherein when the wheel assembly contacts the concave-convex surface and drives the frame to tilt, the roadblock shielding component drives the detection component to move in the opposite direction of the tilting direction, and controls the ground clearance of the detection component to always maintain an equal state; A rotation adjustment component, wherein the rotation adjustment component is mounted on the vehicle frame, and when the vehicle frame rotates a certain angle, the rotation adjustment component controls the detection component to rotate in the opposite direction and at the same angle, and controls the detection component to always be parallel to the plumb line; The roadblock shielding component comprises a rotating block (4) rotatably mounted on both ends of a support seat (102); a first telescopic rod (401) is fixedly mounted between two rotating blocks (4) located on the same side; a driving rod (402) is fixedly mounted on two of the rotating blocks (4) located on the same side; a sliding bar (403) is rotatably mounted on the driving rod (402); a guide block (404) is rotatably mounted on one end of the support seat (102); a swing rod (405) is fixedly mounted on the guide block (404); a sliding sleeve (406) is fixedly mounted on the swing rod (405); the sliding sleeve (406) and the sliding sleeve (406) are connected to the sliding sleeve (406). The support seat (102) is slidably connected with a strip (403), a pressure rod (407) is fixedly installed on the slide bar (403), a second telescopic rod (408) is fixedly installed on one end of the support seat (102), a first oil cylinder (409) is fixedly installed on the second telescopic rod (408), a blocking block (410) is slidably installed in the first oil cylinder (409), the blocking block (410) divides the first oil cylinder (409) into an upper oil chamber (4091) and a lower oil chamber (4092), the upper oil chamber (4091) is connected to an upper connecting nozzle (411), and the lower oil chamber (4092) is connected to a lower connecting nozzle (412).

2. A road flatness detection device according to claim 1, characterized in that: A support seat (102) is rotatably mounted on one end of the frame (1) and the extension frame (101), a first roller frame (103) is rotatably mounted on both ends of one of the support seats (102), two first support wheels (104) are rotatably mounted on both ends of the first roller frame (103), a second roller frame (105) is rotatably mounted on both ends of the other support seat (102), a second support wheel (106) is rotatably mounted on one end of the second roller frame (105), a steering wheel seat (107) is rotatably mounted on the other end of the second roller frame (105), a third support wheel (108) is rotatably mounted on the steering wheel seat (107), and a traction connection member is mounted on the steering wheel seat (107).

3. A road flatness detection device according to claim 2, characterized in that: The traction connection comprises a first connecting rod (109) rotatably mounted on the two steering wheel seats (107); a second connecting rod (110) rotatably mounted on the first connecting rod (109); a third connecting rod (111) rotatably mounted on the two second connecting rods (110); and a traction rod (112) rotatably mounted on the third connecting rod (111) and the first connecting rod (109).

4. A road flatness detection device according to claim 3, characterized in that: The frame (1) is equipped with a fastening assembly for fixing the extension frame (101), the fastening assembly comprising a screw rod (2) threadedly connected to both ends of the frame (1), a handle (201) being fixedly mounted on one end of the screw rod (2) and a fastening pad (202) being rotatably mounted on the other end.

5. A road flatness detection device according to claim 4, characterized in that: The detection component comprises a support plate (3) rotatably mounted on the frame (1), two ends of the support plate (3) are provided with slide grooves (301), a lifting plate (302) is slidably mounted in the two slide grooves (301), a connecting seat (303) is fixedly mounted on the lifting plate (302), a displacement sensor (304) is slidably mounted on the connecting seat (303), an adjustment plate (305) is fixedly mounted on the displacement sensor (304), one end of the adjustment plate (305) is slidably mounted with a guide rod (306), the guide rod (306) is slidably connected to the connecting seat (303), and the other end of the adjustment plate (305) is rotatably mounted. An adjusting rod (307) is provided, the adjusting rod (307) being threadedly connected to the connecting seat (303), a first magnetic sheet (308) being fixedly mounted on the detection shaft of the displacement sensor (304), a sliding rod (309) being slidably mounted on the connecting seat (303), a measuring wheel seat (310) being fixedly mounted on the sliding rod (309), a measuring wheel seat (311) being rotatably mounted on the measuring wheel seat (310), a plurality of springs (312) being fixedly mounted between the connecting seat (303) and the measuring wheel seat (310), and a second magnetic sheet (313) being fixedly mounted on one end of the sliding rod (309) close to the first magnetic sheet (308).

6. A road flatness detection device according to claim 5, characterized in that: The roadblock shielding component also includes a push block (413) fixedly mounted on the lifting plate (302), a transmission rod (414) fixedly mounted on the push block (413), a second oil cylinder (415) fixedly mounted on the frame (1), a spacer (416) slidably mounted in the second oil cylinder (415), the spacer (416) dividing the second oil cylinder (415) into a first oil chamber (4151) located on the upper side and a second oil chamber (4152) located on the lower side, the spacer (416) being fixedly connected to the transmission rod (414), the first oil cylinder (415) being fixedly mounted on the frame (1), and the second oil cylinder (415) being slidably mounted in the second oil cylinder (415). The cavity (4151) is connected to two first connectors (417), and the second oil cavity (4152) is connected to two second connectors (418). The upper connecting nozzle (411) corresponds to the first connecting nozzle (417) one by one and is connected via a first oil pipe (419), and the lower connecting nozzle (412) corresponds to the second connecting nozzle (418) one by one and is connected via a second oil pipe (420). The first oil cylinder (409), the second oil cylinder (415), the first oil pipe (419) and the second oil pipe (420) are all filled with hydraulic oil.

7. A road flatness detection device according to claim 6, characterized in that: The rotation adjustment component comprises a base plate (5) fixedly mounted on one end of the support seat (102); an oil ring (501) is fixedly mounted on the base plate (5) and the frame (1); the oil ring (501) on the displacement frame (1) is coaxial with the rotation connection between the support plate (3) and the frame (1); an oil groove (502) is provided in the oil ring (501); a spacer block (503) is fixedly mounted in the oil groove (502); a sealing groove (504) is provided in the oil ring (501); a spacer block (503) is rotatably mounted in the sealing groove (504); A sealing ring (505) is provided, a stopper (506) is fixedly mounted on the sealing ring (505), the stopper (506) and the spacer block (503) separate the oil groove (502) into a left oil chamber (5021) and a right oil chamber (5022), the left oil chamber (5021) is connected to a first pipe joint (508), the right oil chamber (5022) is connected to a second pipe joint (509), and the first pipe joint (508) and the second pipe joint (509) located on the frame (1) are both connected to a three-way joint (510).

8. A road flatness detection device according to claim 7, characterized in that: A connecting column (507) is coaxially fixedly mounted on the sealing ring (505), wherein two of the connecting columns (507) are fixedly connected to two of the rotating blocks (4), and the other connecting column (507) is fixedly connected to the support plate (3).

9. A road flatness detection device according to claim 8, characterized in that: The first pipe joint (508) on the oil ring (501) connected to the rotating block (4) is communicated with the first pipe joint (508) located on the frame (1) via a third oil pipe (511), and the second pipe joint (509) on the oil ring (501) connected to the rotating block (4) is communicated with the second pipe joint (509) located on the frame (1) via a fourth oil pipe (512).

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