A road surface flatness measuring instrument and a measuring method

Abstract

The application discloses a road surface flatness measuring instrument and a measuring method, which comprises a main frame, a moving assembly, a cleaning assembly, a measuring assembly and a marking assembly which are installed on the main frame; the main frame comprises a connecting frame, a main frame base and a main frame top; the moving assembly comprises a first moving mechanism and a second moving mechanism; the first moving mechanism comprises a first moving shaft which is rotatably connected to the main frame base; the cleaning assembly comprises a cleaning driving shaft, a first cleaning mechanism and a second cleaning mechanism; the cleaning driving shaft is rotatably connected to the main frame base; the first cleaning mechanism and the second cleaning mechanism are respectively in transmission connection with the cleaning driving shaft; the cleaning driving shaft is in transmission connection with the first moving shaft; the measuring assembly is used for acquiring elevation change data of a road surface in a transverse direction and a longitudinal direction; and the marking assembly is used for marking the road surface. The application solves the problem that stones and particles on a road can cause detection data deviation when the flatness of the road is measured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road detection, and in particular to a road surface flatness measuring instrument and a measuring method. BACKGROUND

[0002] With the rapid development of economy, the overall road construction is constantly advancing, and the roads in cities, industrial parks and even rural areas are more complete. After the road is paved, the flatness, compressive strength and durability of the road are particularly important, especially the flatness of the road, which is very important for the comfort and safety of vehicle driving. Therefore, the flatness of the road needs to be accurately measured to improve the quality of road paving.

[0003] In the patent No. CN221877653U, a detection device for measuring short-distance road surface flatness is disclosed, which relates to the technical field of measuring devices. The utility model discloses two rectangular support plates, two rectangular support plates are provided with translation mechanism and clamping mechanism; two rectangular support plates are provided with trapezoidal sliding grooves on the side close to each other, and the inner wall of the two trapezoidal sliding grooves is slidably connected with a rectangular support frame, and the top of the rectangular support frame is provided with a laser flatness detector, the translation mechanism comprises a translation assembly and a limiting assembly, the translation assembly comprises a rack fixedly connected to the bottom of the rectangular support frame. The utility model discloses a translation mechanism, which solves the problem that the laser flatness detector is not convenient to move, and needs to spend more time to carry and adjust the equipment when detecting the short-distance road at different positions, thereby prolonging the measurement time of a single detection point and reducing the overall detection efficiency.

[0004] However, the above-mentioned detection device for measuring short-distance road surface flatness has the following defects when in use: after the road is paved, the flatness of the road needs to be measured, but there are some stones, particles and other impurities on the road, which will cause false detection data when the laser flatness detector passes through the area. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the present application provides a road surface flatness measuring instrument and a measuring method, which solves the problem of deviation of detection data caused by stones and particles on the road during flatness measurement of the road.

[0006] The first aspect of the present application provides a road surface flatness measuring instrument, which comprises:

[0007] The main frame, the moving assembly, the cleaning assembly, the measuring assembly and the marking assembly installed on the main frame are included.

[0008] The main frame includes a connecting frame, a main frame base and a main frame top seat, wherein the main frame base and the main frame top seat are respectively arranged at the bottom and the top of the connecting frame; the main frame has a frame head and a frame tail;

[0009] The moving assembly includes a first moving mechanism and a second moving mechanism, wherein the first moving mechanism is disposed at the head of the frame, and the second moving mechanism is disposed at the tail of the frame; the first moving mechanism includes a first moving shaft, a first moving wheel, and a second moving wheel, wherein the first moving shaft is rotatably connected to the main frame base; the first moving wheel and the second moving wheel are respectively disposed at opposite ends of the first moving shaft;

[0010] The cleaning assembly is arranged near the head of the frame, and the cleaning assembly includes a cleaning drive shaft, a first cleaning mechanism and a second cleaning mechanism; the cleaning drive shaft is rotatably connected to the main body base; the first cleaning mechanism and the second cleaning mechanism are respectively connected to the cleaning drive shaft in a transmission manner, and the first cleaning mechanism and the second cleaning mechanism are used to clean the road surface; the cleaning drive shaft is connected to the first movable shaft in a transmission manner; the cleaning drive shaft is driven to rotate by the first movable shaft, thereby providing power to enable the first cleaning mechanism and the second cleaning mechanism to clean the road surface;

[0011] The measuring component is used to obtain the elevation change data of the road surface in the horizontal and vertical directions;

[0012] The marking assembly is used for marking a road surface.

[0013] In the first aspect of the present invention, as a preferred embodiment, a dust cover is provided on the main body base, a first accommodating cavity is formed between the dust cover and the main body base, and the cleaning drive shaft is arranged in the first accommodating cavity; a linkage groove and a cleaning through hole are provided at the bottom of the first accommodating cavity;

[0014] A first synchronous wheel, a second synchronous wheel and a first synchronous belt are provided between the first movable shaft and the cleaning drive shaft; the first synchronous wheel is connected to the first movable shaft, the second synchronous wheel is connected to the cleaning drive shaft, and the synchronous belt passes through the linkage slot and is connected to the first synchronous wheel and the second synchronous wheel respectively;

[0015] The first cleaning mechanism includes a cleaning brush head, a cleaning brush seat and a cleaning brush shaft; the cleaning brush seat is fixed to the main machine base, a cleaning brush bearing is fixed in the cleaning brush seat, and the cleaning brush bearing is coaxially arranged with the cleaning brush through hole; a first bevel gear is provided at one end of the cleaning brush shaft, and the other end passes through the cleaning brush through hole in sequence and is connected to the cleaning brush bearing and the cleaning brush head; bristles are provided at the bottom of the cleaning brush head;

[0016] The cleaning driving shaft is provided with a second bevel gear, which is engaged with the first bevel gear.

[0017] In the first aspect of the application, as a preferred embodiment, the first moving shaft is provided with a first damping seat at the connection with the main machine base, the first damping seat has a connecting end and a supporting end, and the connecting end and the supporting end are connected through damping; the connecting end of the first damping seat is connected with the end of the first moving shaft through a bearing seat, and the supporting end of the first damping seat is fixedly connected with the main machine base.

[0018] The cleaning driving shaft is provided with a second damping seat at the connection with the main machine base, the second damping seat has a connecting end and a supporting end, and the connecting end and the supporting end are connected through damping; the connecting end of the second damping seat is connected with the end of the cleaning driving shaft through a bearing seat, and the supporting end of the second damping seat is fixedly connected with the main machine base.

[0019] The cleaning driving shaft is provided with a second damping seat at the connection with the main machine base, the second damping seat has a connecting end and a supporting end, and the connecting end and the supporting end are connected through damping; the connecting end of the second damping seat is connected with the end of the cleaning driving shaft through a bearing seat, and the supporting end of the second damping seat is fixedly connected with the main machine base.

[0020] In the first aspect of the application, as a preferred embodiment, the cleaning driving shaft is sequentially provided with a first sub-shaft, a linkage sub-shaft and a second sub-shaft along the axial direction; the first sub-shaft is in transmission connection with the first cleaning mechanism, the linkage sub-shaft is linked with the first moving shaft, and the second sub-shaft is connected with the second cleaning mechanism.

[0021] One end of the first sub-shaft is connected with the main machine base through a second damping seat, and the other end is connected with the linkage sub-shaft through a first electromagnetic coupling, and the first electromagnetic coupling controls the on-off of the torque transmission between the first sub-shaft and the linkage sub-shaft; one end of the second sub-shaft is connected with the main machine base through a second damping seat, and the other end is connected with the linkage sub-shaft through a second electromagnetic coupling, and the second electromagnetic coupling controls the on-off of the torque transmission between the second sub-shaft and the linkage sub-shaft.

[0022] In the first aspect of the application, as a preferred embodiment, the second moving mechanism includes a second moving shaft, a third moving wheel and a fourth moving wheel, the second moving shaft is rotatably connected to the main machine base, a third damping seat is arranged between the second moving shaft and the main machine base, and the third moving wheel and the fourth moving wheel are arranged at opposite ends of the second moving shaft, respectively.

[0023] The second moving mechanism also includes a moving drive member, a moving active wheel, a moving driven wheel and a moving synchronous belt; the moving active wheel is arranged on the second moving shaft, the moving driven wheel is fixed to the first moving shaft, and the moving active wheel and the moving driven wheel are connected by the moving synchronous belt; the moving drive member is fixed to the third shock-absorbing damping seat through a mounting seat, and the moving drive member has an output end, and the output end is connected to the moving active wheel; the moving drive member provides power to drive the moving active wheel and the moving driven wheel to rotate, so that the main frame moves on the road surface.

[0024] In the first aspect of the present invention, as a preferred embodiment, the main engine top seat is provided with an upper measuring opening, and the upper measuring opening is arranged along the width direction of the main engine top seat; a suspension is provided above the upper measuring opening; the main engine base is provided with a lower measuring opening, and the lower measuring opening is arranged below the gravity direction of the upper measuring opening, so that a measuring channel is formed between the upper measuring opening and the lower measuring opening; the connecting frame includes a first support plate and a second support plate, and the first support plate and the second support plate are respectively arranged at both ends of the measuring channel; an upper limit plate and a lower limit plate are provided between the first support plate and the second support plate, and a plurality of first positioning holes are linearly arrayed on the upper limit plate, and a plurality of second positioning holes are correspondingly provided on the lower limit plate;

[0025] The measuring assembly includes a plurality of measuring units, which are used for horizontal and vertical elevation change data of the road surface. The plurality of measuring units are linearly arranged in the measuring channel.

[0026] In the first aspect of the present invention, as a preferred embodiment, the measuring unit includes a laser sensor and a lifting mechanism, the laser sensor is fixed to the bottom wall of the suspension; the lifting mechanism includes a sliding rod, the sliding rod is inserted into the first positioning hole and the second positioning hole, the top end of the sliding rod extends to the upper measuring opening, and the bottom end of the sliding rod extends to the lower measuring opening; the top end of the sliding rod is fixedly connected to a sensing seat, and the sensing seat is arranged opposite to the laser sensor; the bottom end of the sliding rod is fixedly connected to a measuring wheel seat, and a measuring roller is rotatably connected to the measuring wheel seat;

[0027] A counterweight sleeve is fixedly connected to the lower side of the slide rod, and the bottom of the counterweight sleeve is connected to the lower measuring port via a ball slider; the top of the counterweight sleeve is inserted into the second positioning hole; a support spring is sleeved on the upper side of the slide rod, one end of the support spring abuts against the upper limit plate, and the other end abuts against the top surface of the counterweight sleeve; the support spring provides an elastic force that drives the lifting mechanism to slide downward;

[0028] The main frame further comprises a main frame top cover, which covers the top of the main frame base; a second accommodating cavity is formed between the main frame top cover and the main frame base; the suspension frame is arranged in the second accommodating cavity; and a counterweight is fixed in the second accommodating cavity.

[0029] In the first aspect of the present application, as a preferred embodiment, a mark through hole is formed in the main frame base, which is arranged on one side of the lower measuring through hole, and a fixing frame is arranged above the mark through hole;

[0030] The marking assembly comprises a material box, a feeding pipe, a pump body and a feeding pipe; the pump body is fixed to the main frame base, and the feeding pipe is fixed to the fixing frame; the pump body has an input port and an output port, the pump body input port is communicated with the material box through the feeding pipe, and the pump body output port is communicated with the feeding pipe through the feeding pipe; a plurality of discharge mechanisms are linearly arranged on the feeding pipe; the number and position of the discharge mechanisms are respectively arranged corresponding to the plurality of measuring units.

[0031] In the first aspect of the present application, as a preferred embodiment, the discharge mechanism comprises a discharge pipe, one end of the discharge pipe is connected with the feeding pipe, the other end of the discharge pipe extends to the bottom of the main frame base through the mark through hole, a mark head is connected to the end of the discharge end, and an electromagnetic control valve is connected to the discharge pipe.

[0032] The second aspect of the present application provides a road surface flatness measurement method, comprising the following steps:

[0033] Providing a road surface flatness measuring instrument according to any one of the first aspect of the present application;

[0034] Obtaining a detection task, the detection task comprising to-be-detected road section information and flatness index information, constructing a to-be-detected road section basic model based on the to-be-detected road section information, the to-be-detected road section basic model having detection starting point information, detection end point information and detection planning route information; setting a mark threshold based on the flatness index information;

[0035] The road surface flatness measuring instrument is towed to the detection base point by a towing device; the road surface flatness measuring instrument is driven to move at a constant speed along the detection planned route to the detection end point; during this process, the first moving wheel and the second moving wheel are in rolling contact with the road surface, driving the first moving shaft to rotate, and the rotation of the first moving shaft drives the cleaning drive shaft to rotate, and the cleaning drive shaft provides power to enable the first cleaning mechanism and the second cleaning mechanism to clean the road surface; the measuring component is used to obtain the transverse and longitudinal elevation change data of the road surface, and synchronize the transverse and longitudinal elevation change data of the road surface to the basic model of the road section to be inspected; the transverse elevation change data of the road surface is matched with a preset marking threshold, and the longitudinal elevation change data of the road surface is matched with a preset marking threshold. When the transverse elevation change data of the road surface or the longitudinal elevation change data of the road surface exceeds the marking threshold, the marking component is used to mark the road surface, and the marking coordinates are synchronized to the basic model of the road section to be inspected; and a flatness report is generated.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The road surface flatness measuring instrument of the present invention is supported and connected by a main frame, and a mobile component is provided at the bottom of the main frame to provide a mobile function; a cleaning component is provided near the head of the frame to clean the road section to be measured, and debris such as gravel, soil, leaves, garbage, etc. on the road surface are cleared away to prevent the debris from covering up the actual road surface unevenness or the debris itself from causing false unevenness signals; the horizontal and vertical elevation change data of the road surface are obtained through the measuring component, and after cleaning, the actual condition of the road surface can be more realistically reflected, thereby ensuring the validity of the data; the uneven position of the road is marked by the marking component, so that subsequent staff can conveniently handle the uneven position of the road. By connecting the first moving shaft of the moving component with the cleaning drive shaft of the cleaning component, during the movement, the first moving wheel and the second moving wheel on the first moving shaft roll in contact with the road surface to drive the first moving shaft to rotate, and the rotation of the first moving shaft drives the cleaning drive shaft to rotate, and the cleaning drive shaft provides power to enable the first cleaning mechanism and the second cleaning mechanism to clean the road surface; the cleaning component can perform the cleaning task without the need for an additional power source, avoiding the introduction of high-frequency noise due to vibration caused by engine vibration, which causes irregular fluctuations in the measurement data and affects the accuracy of road surface data. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the structure of the road surface flatness measuring instrument of the present invention;

[0039] Figure 2 A schematic structural diagram of the road surface flatness measuring instrument of the present invention from another angle;

[0040] Figure 3 An internal structure diagram of the road surface flatness measuring instrument of the present application;

[0041] Figure 4 An internal structure diagram of the road surface flatness measuring instrument of the present application;

[0042] Figure 5 An internal structure diagram of the road surface flatness measuring instrument of the present application;

[0043] Figure 6 An internal structure diagram of the road surface flatness measuring instrument of the present application;

[0044] Figure 7 An internal structure diagram of the road surface flatness measuring instrument of the present application;

[0045] Figure 8 An internal structure diagram of the road surface flatness measuring instrument of the present application;

[0046] Figure 9 An internal structure diagram of the road surface flatness measuring instrument of the present application;

[0047] In the figure: 10, main frame; 11, connecting frame; 111, first support plate; 112, second support plate; 113, upper limit plate; 114, lower limit plate; 12, main frame base; 121, dust cover; 122, linkage slot; 123, cleaning hole; 124, lower measuring port; 125, marking port; 126, fixing frame; 13, main frame top; 131, upper measuring port; 132, suspension; 14, machine Frame head; 15, frame tail; 16, mainframe top cover; 17, counterweight; 20, moving assembly; 21, first moving mechanism; 211, first moving shaft; 212, first moving wheel; 213, second moving wheel; 214, first shock-absorbing and damping seat; 22, second moving mechanism; 221, second moving shaft; 222, third shock-absorbing and damping seat; 223, moving drive member; 224, moving driving wheel; 225, moving driven wheel; 226, moving synchronous belt; 30, cleaning assembly; 31, cleaning drive shaft; 311, first synchronous wheel; 312, second synchronous wheel; 313, first synchronous belt; 314, second bevel gear; 315, second shock-absorbing and damping seat; 32, first cleaning mechanism; 321, cleaning brush head; 322, cleaning brush seat; 323, cleaning brush shaft; 324, first bevel gear; 33, second cleaning mechanism; 40, measuring group Parts; 41. Measuring unit; 42. Laser sensor; 43. Lifting mechanism; 431. Slide rod; 432. Sensing seat; 433. Measuring roller; 434. Counterweight sleeve; 435. Ball slider; 436. Support spring; 50. Marking assembly; 51. Material box; 52. Feed pipe; 53. Pump body; 54. Feed pipe; 55. Discharging mechanism; 551. Discharging pipe; 552. Marking head; 553. Solenoid control valve. DETAILED DESCRIPTION

[0048] Below, the invention is further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Unless otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0049] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically specified and limited.

[0050] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, it can be connected through an intermediate medium, it can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] The terms "first", "second", and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0052] Embodiment 1:

[0053] Please refer to Figures 1-9 The present embodiment provides a road surface flatness measuring instrument, comprising a main frame 10, and a moving assembly 20, a cleaning assembly 30, a measuring assembly 40 and a marking assembly 50 installed on the main frame 10.

[0054] The main frame 10 of the present embodiment provides installation and support basis for each assembly, and the main frame 10 comprises a connecting frame 11, a main machine base 12 and a main machine top 13, wherein the main machine base 12 and the main machine top 13 are arranged at the bottom and the top of the connecting frame 11 respectively; the main frame 10 has a frame head 14 and a frame tail 15, wherein the frame head 14 is one end in front during the travel of the road surface flatness measuring instrument, and correspondingly, the frame tail 15 is one end in the rear during the travel of the road surface flatness measuring instrument. The moving assembly 20 is arranged at the bottom of the main machine base 12, and the cleaning assembly 30, the measuring assembly 40 and the marking assembly 50 are arranged in sequence along the direction from the frame head 14 to the frame tail 15, which meets the process requirements of cleaning, measuring and marking.

[0055] The moving assembly 20 can enable the main frame 10 to move on the road section to be tested, while driving the cleaning assembly 30 to clean the road section to be tested. The moving assembly 20 comprises a first moving mechanism 21 and a second moving mechanism 22. The first moving mechanism 21 is arranged at the frame head 14, and the second moving mechanism 22 is arranged at the frame tail 15. The first moving mechanism 21 comprises a first moving shaft 211, a first moving wheel 212 and a second moving wheel 213. The first moving shaft 211 is rotatably connected to the main frame base 12 at both ends. The first moving wheel 212 and the second moving wheel 213 are arranged at opposite ends of the first moving shaft 211, respectively. The second moving mechanism 22 comprises a second moving shaft 221, a third moving wheel and a fourth moving wheel. The second moving shaft 221 is rotatably connected to the main frame base 12. A third damping seat 222 is arranged between the second moving shaft 221 and the main frame base 12. The third moving wheel and the fourth moving wheel are arranged at opposite ends of the second moving shaft 221, respectively.

[0056] The cleaning assembly 30 is arranged close to the frame head 14 and is used for cleaning the road section to be tested. The cleaning assembly 30 comprises a cleaning driving shaft 31, a first cleaning mechanism 32 and a second cleaning mechanism 33. The cleaning driving shaft 31 is rotatably connected to the main frame base 12. The first cleaning mechanism 32 and the second cleaning mechanism 33 are drivingly connected to the cleaning driving shaft 31, respectively. The first cleaning mechanism 32 and the second cleaning mechanism 33 are used for cleaning the road surface. The cleaning driving shaft 31 is drivingly connected to the first moving shaft 211. The cleaning driving shaft 31 is driven to rotate by the first moving shaft 211, so as to provide power for the first cleaning mechanism 32 and the second cleaning mechanism 33 to clean the road surface.

[0057] The measuring assembly 40 is used for acquiring the elevation change data of the road surface in the transverse and longitudinal directions.

[0058] The marking assembly 50 is used for marking the road surface.

[0059] Based on the above structure, the road surface flatness measuring instrument of this embodiment is supported and connected by the main frame 10, and a moving component 20 is provided at the bottom of the main frame 10 to provide a mobile function; by providing a cleaning component 30 near the frame head 14, the road section to be measured is cleaned, and debris such as gravel, soil, leaves, garbage, etc. on the road surface are cleaned out to prevent the debris from covering up the actual road surface unevenness or the debris itself from causing false unevenness signals. The horizontal and vertical elevation change data of the road surface are obtained through the measuring component 40. After cleaning, the actual condition of the road surface can be more realistically reflected, thereby ensuring the validity of the data; the uneven position of the road is marked by the marking component 50, which facilitates subsequent staff to handle the uneven position of the road. In this embodiment, the first movable shaft 211 of the movable component 20 is connected by transmission to the cleaning drive shaft 31 of the cleaning component 30. During the movement, the first movable wheel 212 and the second movable wheel 213 on the first movable shaft 211 are in rolling contact with the road surface, driving the first movable shaft 211 to rotate, and the rotation of the first movable shaft 211 drives the cleaning drive shaft 31 to rotate, and the cleaning drive shaft 31 provides power to enable the first cleaning mechanism 32 and the second cleaning mechanism 33 to clean the road surface; no additional power source is required to enable the cleaning component 30 to perform the cleaning task, avoiding the introduction of high-frequency noise due to vibration caused by engine vibration, which causes irregular fluctuations in the measurement data and affects the accuracy of the road surface elevation data.

[0060] Specifically, a dust cover 121 is provided on the main body base 12 of this embodiment, and a first accommodating cavity is formed between the dust cover 121 and the main body base 12, and the cleaning drive shaft 31 is arranged in the first accommodating cavity; a linkage groove 122 and a cleaning through hole 123 are provided at the bottom of the first accommodating cavity; by providing the dust cover 121, the cleaning component 30 is isolated from the measuring component 40, thereby preventing dust from being raised during the road surface cleaning process from affecting the measurement results, and at the same time preventing dust from contaminating the internal structure of the road surface flatness measuring instrument.

[0061] A first synchronous wheel 311, a second synchronous wheel 312 and a first synchronous belt 313 are arranged between the first movable shaft 211 and the cleaning drive shaft 31; the first synchronous wheel 311 is connected to the first movable shaft 211, the second synchronous wheel 312 is connected to the cleaning drive shaft 31, and the first synchronous belt 313 passes through the linkage groove 122 and is respectively connected to the first synchronous wheel 311 and the second synchronous wheel 312; an elastic tensioning wheel can also be set on the first synchronous belt 313.

[0062] The first cleaning mechanism 32 includes a cleaning brush head 321, a cleaning brush seat 322, and a cleaning brush shaft 323. The cleaning brush seat 322 is fixed to the main unit base 12, and a cleaning brush bearing is fixed in the cleaning brush seat 322. The cleaning brush bearing is coaxially arranged with the cleaning brush through hole 123. One end of the cleaning brush shaft 323 is provided with a first bevel gear 324, and the other end passes through the cleaning brush through hole 123 in sequence and is connected to the cleaning brush bearing and the cleaning brush head 321. Bristles are provided at the bottom of the cleaning brush head 321. A second bevel gear 314 is provided on the cleaning drive shaft 31, and the second bevel gear 314 meshes with the first bevel gear 324. The specific structure of the second cleaning mechanism 33 and the connection structure with the cleaning drive shaft 31 are consistent with those of the first cleaning mechanism 32, which can be understood by those skilled in the art and will not be repeated here.

[0063] During use, torque is transmitted between the first movable shaft 211 and the cleaning drive shaft 31 through a synchronous pulley device, driving the cleaning drive shaft 31 to rotate, and the second bevel gear 314 engages with the first bevel gear 324 to drive the cleaning shaft 323 to rotate, so that the cleaning seat 322 drives the cleaning head 321 to rotate, and the first cleaning mechanism 32 and the cleaning head 321 of the second cleaning mechanism 33 rotate at the same time to clean out gravel, soil, leaves, garbage and other debris on the road surface to be detected, so as to prevent debris from covering up the actual road surface unevenness and improve the accuracy of data acquisition; by adjusting the transmission ratio between the first movable shaft 211 and the cleaning drive shaft 31, as well as the transmission ratio between the cleaning drive shaft 31 and the first cleaning mechanism 32 and the second cleaning mechanism 33, the rotation speed of the cleaning head 321 can be controlled, the structure is simple, and power loss is reduced.

[0064] Furthermore, a first shock-absorbing and damping seat 214 is provided at the connection between the first movable shaft 211 and the main unit base 12. The first shock-absorbing and damping seat 214 has a connecting end and a supporting end. The connecting end and the supporting end of the first shock-absorbing and damping seat 214 are connected via a damping connection. The connecting end of the first shock-absorbing and damping seat 214 is connected to the end of the first movable shaft 211 via a bearing seat, and the supporting end of the first shock-absorbing and damping seat 214 is fixedly connected to the main unit base 12.

[0065] A second shock-absorbing and damping seat 315 is provided at the connection between the cleaning drive shaft 31 and the main engine base 12. The second shock-absorbing and damping seat 315 has a connecting end and a supporting end. The connecting end and the supporting end of the second shock-absorbing and damping seat 315 are connected by a damping connection; the connecting end of the second shock-absorbing and damping seat 315 is connected to the end of the cleaning drive shaft 31 through a bearing seat, and the supporting end of the second shock-absorbing and damping seat 315 is fixedly connected to the main engine base 12.

[0066] A first shock-absorbing damping seat 214 is provided at the connection between the first moving shaft 211 and the main base 12, and a second shock-absorbing damping seat 315 is provided at the connection between the cleaning drive shaft 31 and the main base 12. The damping inside the first shock-absorbing damping seat 214 and the second shock-absorbing damping seat 315 can be a composite elastic material and a support spring. The first shock-absorbing damping seat 214 absorbs and isolates the vibration energy of the moving component 20 during its movement, and the second shock-absorbing damping seat 315 absorbs and isolates the vibration energy of the cleaning component 30 during the road cleaning process, thereby ensuring the stability of the main frame 10 and improving the reliability and accuracy of the measurement results.

[0067] An elastic member is provided at the connection between the end of the cleaning brush shaft 323 and the cleaning brush head 321. This elastic member provides elastic force to drive the cleaning brush head 321 close to the ground, allowing the bristles on the cleaning brush head 321 to adhere closely to the ground and thoroughly clean the road surface being tested. A telescopic member can also be provided at the connection between the end of the cleaning brush shaft 323 and the cleaning brush head 321 to raise and lower the cleaning brush head 321. The cleaning brush head 321 can be raised when the instrument is in standby mode or when passing through a special section of road.

[0068] As an optional embodiment, the cleaning drive shaft 31 is sequentially formed with a first sub-shaft, a linkage sub-shaft, and a second sub-shaft (not shown) along the axial direction; the first sub-shaft is used for transmission connection with the first cleaning mechanism 32, the linkage sub-shaft is used for linkage with the first movable shaft 211, and the second sub-shaft is used for connection with the second cleaning mechanism 33;

[0069] One end of the first sub-shaft is connected to the main engine base 12 through a second shock-absorbing and damping seat 315, and the other end is connected to the linkage sub-shaft through a first electromagnetic coupling, and the first electromagnetic coupling is used to control the on and off of the torque transmission between the first sub-shaft and the linkage sub-shaft; one end of the second sub-shaft is connected to the main engine base 12 through a second shock-absorbing and damping seat 315, and the other end is connected to the linkage sub-shaft through a second electromagnetic coupling, and the second electromagnetic coupling is used to control the on and off of the torque transmission between the second sub-shaft and the linkage sub-shaft; the first sub-shaft, the linkage sub-shaft and the second sub-shaft can be respectively provided with shock-absorbing support seats to support each sub-shaft. By respectively arranging a first electromagnetic coupling and a second electromagnetic coupling between the linkage sub-shaft and the first sub-shaft and the second sub-shaft, the on-off connection between the linkage sub-shaft and the first sub-shaft and the second sub-shaft is controlled by an electromagnetic signal. Only when in operation are the first sub-shaft and the second sub-shaft connected to the linkage sub-shaft for transmission, so as to drive the first cleaning mechanism 32 and the second cleaning mechanism 33 to work. During the transportation of the instrument, the power transmission between the linkage sub-shaft and the first sub-shaft and the second sub-shaft can be cut off, so that the linkage sub-shaft is idle and the operation of the first cleaning mechanism 32 and the second cleaning mechanism 33 is stopped, thereby avoiding waste of kinetic energy and saving energy and protecting the environment.

[0070] The second moving mechanism 22 of this embodiment also includes a moving driving member 223, a moving active wheel 224, a moving driven wheel 225 and a moving synchronous belt 226; the moving active wheel 224 is arranged on the second moving shaft 221, and the moving driven wheel 225 is fixed to the first moving shaft 211, and the moving active wheel 224 and the moving driven wheel 225 are connected by the moving synchronous belt 226; the moving driving member 223 is fixed to the third shock-absorbing damping seat 222 through a mounting seat, and the moving driving member 223 has an output end, and the output end is connected to the moving active wheel 224; the moving driving member 223 provides power to drive the moving active wheel 224 and the moving driven wheel 225 to rotate, so that the main frame 10 moves on the road.

[0071] The main engine top seat 13 of this embodiment is provided with an upper measuring opening 131, and the upper measuring opening 131 is arranged along the width direction of the main engine top seat 13; a suspension 132 is provided above the upper measuring opening 131, and the suspension 132 is an inverted U-shaped frame; the main engine base 12 is provided with a lower measuring opening 124, and the lower measuring opening 124 is arranged below the gravity direction of the upper measuring opening 131, so that a measuring channel is formed between the upper measuring opening 131 and the lower measuring opening 124; the connecting frame 11 includes a first support plate 111 and a second support plate 112, and the first support plate 111 and the second support plate 112 are respectively arranged at both ends of the measuring channel; an upper limit plate 113 and a lower limit plate 114 are provided between the first support plate 111 and the second support plate 112, and a plurality of first positioning holes are linearly arrayed on the upper limit plate 113, and a plurality of second positioning holes are correspondingly provided on the lower limit plate 114;

[0072] The measurement assembly 40 includes several measurement units 41, which are used to measure elevation changes in the transverse and longitudinal directions of the road surface. These measurement units 41 are linearly arranged along the measurement path. In the case of a single straight-line measurement, the elevation change data measured simultaneously by multiple measurement units 41 in parallel can reflect the transverse smoothness of the road surface. The elevation change data measured over time by a single measurement unit 41 can reflect the longitudinal smoothness of the road surface.

[0073] Specifically, the measuring unit 41 includes a laser sensor 42 and a lifting mechanism 43. The laser sensor 42 is fixed to the bottom wall of the suspension 132. The lifting mechanism 43 includes a slide bar 431. The slide bar 431 is inserted into the first positioning hole and the second positioning hole. The top end of the slide bar 431 extends to the upper measuring opening 131, and the bottom end of the slide bar 431 extends to the lower measuring opening 124. The top end of the slide bar 431 is fixedly connected to a sensing seat 432, and the sensing seat 432 is arranged opposite to the laser sensor 42. The bottom end of the slide bar 431 is fixedly connected to a measuring wheel seat, and a measuring roller 433 is connected in a rolling manner in the measuring wheel seat. During the measurement process, the measuring roller 433 is rotated. 33 is in contact with the road surface, driving the sensing base 432 at the upper end of the sliding rod 431 to move up and down as the road surface elevation changes. The laser sensor 42 records the position changes of the sensing base 432, that is, the elevation changes of the road surface, in real time. Combining the advantages of mechanical structure and laser ranging technology, the measuring roller 433 is in direct contact with the road surface, which can accurately reflect the slight elevation changes of the road surface. The lifting mechanism 43 can effectively isolate the influence of the vibration of the main frame 10 on the measurement, thereby improving the measurement accuracy. The laser sensor 42 is not affected by ambient light and is suitable for measurement under various lighting conditions. It is suitable for various types of road surfaces, including asphalt roads, cement roads and gravel roads, and has a wide range of applications.

[0074] Furthermore, a counterweight sleeve 434 is fixedly connected to the bottom of the slide bar 431. The bottom of the counterweight sleeve 434 is connected to the lower measuring port 124 via a ball slider 435. The top of the counterweight sleeve 434 is inserted into the second positioning hole. A support spring 436 is sleeved above the slide bar 431. One end of the support spring 436 abuts against the upper limit plate 113, and the other end abuts against the top surface of the counterweight sleeve 434. The support spring 436 provides an elastic force that drives the lifting mechanism 43 to slide downward. The provision of the counterweight sleeve 434 and the support spring 436 ensures that the roller always maintains close contact with the road surface, reducing the phenomenon of the roller jumping or detaching from the road surface due to slight undulations in the road surface or vehicle vibration. The counterweight sleeve 434 increases the mass of the lifting mechanism 43 and its inertia, thereby reducing the interference of the vibration of the main frame 10, reducing noise and errors in measurement, and improving the accuracy of elevation measurement.

[0075] The main frame 10 also includes a main frame top cover 16, which covers the top of the main frame top base 13; a second accommodating cavity is formed between the main frame top cover 16 and the main frame top base 13; the suspension 132 is arranged in the second accommodating cavity, so that the laser sensor 42 is not interfered by ambient light, thereby improving measurement accuracy.

[0076] A counterweight block 17 is fixed in the second accommodating cavity. By adding counterweights to the lifting mechanism 43 and the main frame 10 at the same time, the inertia of the entire measuring system is improved, and the influence of vehicle vibration and external interference on the measurement results is reduced. The pressure distribution of the main frame 10 on the road surface is made more uniform, and the phenomenon of roller jumping or detachment from the road surface due to vehicle tilt or vibration is reduced, thereby further improving the overall performance and stability of the road surface flatness measuring instrument.

[0077] In this embodiment, a marking opening 125 is provided on the main body base 12. The marking opening 125 is provided on one side of the lower measuring opening 124. A fixing frame 126 is provided above the marking opening 125.

[0078] The marking assembly 50 includes a material box 51, a feeding pipe 52, a pump body 53 and a feeding pipe 54; the pump body 53 is fixed to the main body base 12, and the feeding pipe 54 is fixed to the fixing frame 126; the pump body 53 has an input port and an output port, the input port of the pump body 53 is connected to the material box 51 through the feeding pipe 52, and the output port of the pump body 53 is connected to the feeding pipe 54 through the feeding pipe 54; there are a plurality of discharge mechanisms 55 in a linear array on the feeding pipe 54; the number and position of the discharge mechanisms 55 are respectively arranged corresponding to the plurality of measuring units 41; and the sections passed by each measuring unit 41 are marked respectively by each discharge mechanism 55.

[0079] Specifically, the discharge mechanism 55 includes a discharge pipe 551, one end of which is connected to the feed pipe 54 and the other end of which extends through the marking port 125 to the bottom of the mainframe base 12. A marking head 552 is connected to the discharge end, and the discharge pipe 551 is connected to an electromagnetic control valve 553. The pump body 53 provides power to pump the marking pigment into each discharge mechanism 55. The electromagnetic control valve 553 controls the on / off state of the discharge pipe 551. When the measured transverse or longitudinal elevation change data of the road surface exceeds the marking threshold, the electromagnetic control valve 553 of the discharge mechanism 55 corresponding to the corresponding measurement unit 41 opens, spraying the marking pigment through the marking head 552, marking the road surface. This provides intuitive guidance for subsequent road maintenance and repair. Operators can directly process the markings on the road surface without the need for further inspection or positioning, saving considerable time and labor costs.

[0080] Example 2:

[0081] This embodiment provides a method for measuring road surface flatness based on embodiment 1, comprising the following steps:

[0082] Providing a road surface smoothness measuring instrument as described in any one of Embodiment 1;

[0083] Obtaining a detection task, the detection task including information of a road section to be inspected and flatness index information; constructing a basic model of the road section to be inspected based on the information of the road section to be inspected, the basic model of the road section to be inspected including detection base point information, detection endpoint information, and detection planned route information; and setting a marking threshold based on the flatness index information;

[0084] The road surface flatness measuring instrument is towed to the detection base point by a towing device; the road surface flatness measuring instrument is driven to move at a constant speed along the detection planned route to the detection end point; during this process, the first moving wheel 212 and the second moving wheel 213 are in rolling contact with the road surface, driving the first moving shaft 211 to rotate, and the rotation of the first moving shaft 211 drives the cleaning drive shaft 31 to rotate, and the cleaning drive shaft 31 provides power to enable the first cleaning mechanism 32 and the second cleaning mechanism 33 to clean the road surface; the measuring component 40 is used to obtain the transverse and longitudinal elevation change data of the road surface, and synchronize the transverse and longitudinal elevation change data of the road surface to the basic model of the road section to be inspected; the transverse elevation change data of the road surface is matched with a preset marking threshold, and the longitudinal elevation change data of the road surface is matched with a preset marking threshold. When the transverse elevation change data or the longitudinal elevation change data of the road surface exceeds the marking threshold, the marking component 50 is used to mark the road surface, and the marking coordinates are synchronized to the basic model of the road section to be inspected; and a flatness report is generated.

[0085] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A road surface smoothness measuring instrument, characterized in that: It includes a main frame, and a moving component, a cleaning component, a measuring component and a marking component installed on the main frame; The main frame includes a connecting frame, a main frame base and a main frame top seat, wherein the main frame base and the main frame top seat are respectively arranged at the bottom and the top of the connecting frame; The main frame has a frame head and a frame tail; a dust cover is provided on the main frame base, and a first accommodating cavity is formed between the dust cover and the main frame base; a linkage groove and a cleaning through hole are provided at the bottom of the first accommodating cavity; a measuring channel is formed in the width direction of the main frame; The moving assembly includes a first moving mechanism and a second moving mechanism, wherein the first moving mechanism is disposed at the head of the frame, and the second moving mechanism is disposed at the tail of the frame; the first moving mechanism includes a first moving shaft, a first moving wheel, and a second moving wheel, wherein the first moving shaft is rotatably connected to the main frame base; the first moving wheel and the second moving wheel are respectively disposed at opposite ends of the first moving shaft; The cleaning assembly is arranged near the head of the frame, and the cleaning assembly includes a cleaning drive shaft, a first cleaning mechanism and a second cleaning mechanism; the cleaning drive shaft is rotatably connected to the main body base, and the cleaning drive shaft is arranged in the first accommodating cavity; the first cleaning mechanism and the second cleaning mechanism are respectively connected to the cleaning drive shaft, and the first cleaning mechanism and the second cleaning mechanism are used to clean the road surface; the cleaning drive shaft is driven by the first movable shaft to drive the cleaning drive shaft to rotate, thereby providing power to enable the first cleaning mechanism and the second cleaning mechanism to clean the road surface; a first synchronous wheel, a second synchronous wheel and a first synchronous belt are arranged between the first movable shaft and the cleaning drive shaft; the first synchronous wheel is connected to the first movable shaft, and the second synchronous wheel is connected to the cleaning drive shaft, and the synchronous belt passes through the linkage slot and is connected to the first synchronous wheel and the second synchronous wheel respectively; the first cleaning mechanism includes a cleaning head, a cleaning seat and a cleaning shaft; the cleaning seat is fixed to the main body base, and the cleaning A brush bearing is fixed in the seat, and the brush bearing is coaxially arranged with the brush through hole; one end of the brush shaft is provided with a first bevel gear, and the other end sequentially passes through the brush through hole and is connected to the brush bearing and the brush head; bristles are provided at the bottom of the brush head; a second bevel gear is provided on the cleaning drive shaft, and the second bevel gear is meshed with the first bevel gear; the cleaning drive shaft is axially formed with a first split shaft, a linkage split shaft and a second split shaft; the first split shaft is transmission-connected to the first cleaning mechanism, the linkage split shaft is linked to the first moving shaft, and the second split shaft is connected to the second cleaning mechanism; one end of the first split shaft is connected to the main machine base, and the other end is connected to the linkage split shaft through a first electromagnetic coupling, and the torque transmission between the first split shaft and the linkage split shaft is controlled by the first electromagnetic coupling; one end of the second split shaft is connected to the main machine base, and the other end is connected to the linkage split shaft through a second electromagnetic coupling, and the torque transmission between the second split shaft and the linkage split shaft is controlled by the second electromagnetic coupling; The measuring assembly is used to obtain transverse and longitudinal elevation change data of the road surface; the measuring assembly includes a plurality of measuring units, each of which is used to obtain transverse and longitudinal elevation change data of the road surface, and the plurality of measuring units are linearly arranged in the measuring channel; the elevation change data measured at the same time point by the plurality of measuring units arranged side by side reflects the transverse smoothness of the road surface, and the elevation change data measured on the time axis by a single measuring unit reflects the longitudinal smoothness of the road surface; The marking assembly is used to mark the road surface; A first shock-absorbing and damping seat is provided at the connection between the first movable shaft and the main unit base. The first shock-absorbing and damping seat has a connecting end and a supporting end. The connecting end and the supporting end of the first shock-absorbing and damping seat are connected via a damping connection. The connecting end of the first shock-absorbing and damping seat is connected to the end of the first movable shaft via a bearing seat, and the supporting end of the first shock-absorbing and damping seat is fixedly connected to the main unit base. A second shock-absorbing and damping seat is provided at the connection between the cleaning drive shaft and the main engine base, and the second shock-absorbing and damping seat has a connecting end and a supporting end, and the connecting end and the supporting end of the second shock-absorbing and damping seat are connected by a damping connection; the connecting end of the second shock-absorbing and damping seat is connected to the end of the cleaning drive shaft through a bearing seat, and the supporting end of the second shock-absorbing and damping seat is fixedly connected to the main engine base; An elastic member is provided at the connection between the end of the cleaning shaft and the cleaning head, and the elastic member provides an elastic force to drive the cleaning head close to the ground.

2. A road surface flatness measuring instrument according to claim 1, characterized in that: The second moving mechanism includes a second moving shaft, a third moving wheel, and a fourth moving wheel. The second moving shaft is rotatably connected to the main unit base. A third shock-absorbing damping seat is provided between the second moving shaft and the main unit base. The third moving wheel and the fourth moving wheel are respectively provided at opposite ends of the second moving shaft. The second moving mechanism also includes a moving drive member, a moving active wheel, a moving driven wheel and a moving synchronous belt; the moving active wheel is arranged on the second moving shaft, the moving driven wheel is fixed to the first moving shaft, and the moving active wheel and the moving driven wheel are connected by the moving synchronous belt; the moving drive member is fixed to the third shock-absorbing damping seat through a mounting seat, and the moving drive member has an output end, and the output end is connected to the moving active wheel; the moving drive member provides power to drive the moving active wheel and the moving driven wheel to rotate, so that the main frame moves on the road surface.

3. The road surface flatness measuring instrument according to claim 1, characterized in that: The main engine top seat is provided with an upper measuring opening, and the upper measuring opening is arranged along the width direction of the main engine top seat; a suspension is arranged above the upper measuring opening; the main engine base is provided with a lower measuring opening, and the lower measuring opening is arranged below the gravity direction of the upper measuring opening, so that a measuring channel is formed between the upper measuring opening and the lower measuring opening; the connecting frame includes a first support plate and a second support plate, and the first support plate and the second support plate are respectively arranged at both ends of the measuring channel; an upper limit plate and a lower limit plate are arranged between the first support plate and the second support plate, and a plurality of first positioning holes are linearly arrayed on the upper limit plate, and a plurality of second positioning holes are correspondingly arranged on the lower limit plate.

4. A road surface flatness measuring instrument according to claim 3, characterized in that: The measuring unit includes a laser sensor and a lifting mechanism, wherein the laser sensor is fixed to the bottom wall of the suspension; the lifting mechanism includes a sliding rod, which is inserted into the first positioning hole and the second positioning hole, with the top end of the sliding rod extending to the upper measuring opening and the bottom end of the sliding rod extending to the lower measuring opening; the top end of the sliding rod is fixedly connected to a sensing seat, which is arranged opposite to the laser sensor; the bottom end of the sliding rod is fixedly connected to a measuring wheel seat, and a measuring roller is rotatably connected to the measuring wheel seat; A counterweight sleeve is fixedly connected to the lower side of the slide rod, and the bottom of the counterweight sleeve is connected to the lower measuring port via a ball slider; the top of the counterweight sleeve is inserted into the second positioning hole; a support spring is sleeved on the upper side of the slide rod, one end of the support spring abuts against the upper limit plate, and the other end abuts against the top surface of the counterweight sleeve; the support spring provides an elastic force that drives the lifting mechanism to slide downward; The main frame further includes a main frame top cover, which covers the top of the main frame top seat; a second accommodating cavity is formed between the main frame top cover and the main frame top seat; the suspension is arranged in the second accommodating cavity; a counterweight is fixed in the second accommodating cavity.

5. The road surface flatness measuring instrument according to claim 3, characterized in that: A marking opening is provided on the main body base, the marking opening is provided on one side of the lower measuring opening, and a fixing frame is provided above the marking opening; The marking assembly includes a material box, a feeding pipe, a pump body and a feeding pipe; the pump body is fixed to the main body base, and the feeding pipe is fixed to the fixed frame; the pump body has an input port and an output port, the pump body input port is connected to the material box through the feeding pipe, and the pump body output port is connected to the feeding pipe through the feeding pipe; there are several discharge mechanisms in a linear array on the feeding pipe; the number and position of the discharge mechanisms are respectively set corresponding to the several measuring units.

6. The road surface flatness measuring instrument according to claim 5, characterized in that: The discharging mechanism includes a discharging pipe, one end of which is connected to the feeding pipe, and the other end extends to the bottom of the main machine base through the marking port. The end of the discharging end is connected to a marking head, and the discharging pipe is connected to an electromagnetic control valve.

7. A method for measuring road surface smoothness, characterized in that: The following steps are included: Providing a road surface smoothness measuring instrument as described in any one of claims 1 to 6; Acquire a detection task, the detection task including information of a road section to be inspected and information on a flatness index, and construct a basic model of the road section to be inspected based on the information of the road section to be inspected, the basic model of the road section to be inspected including information on a detection base point, information on a detection endpoint, and information on a detection planning route; Setting a marking threshold based on the flatness index information; The road surface flatness measuring instrument is towed to the detection base point by a towing device; the road surface flatness measuring instrument is driven to move at a constant speed along the detection planned route to the detection end point; during this process, the first moving wheel and the second moving wheel are in rolling contact with the road surface, driving the first moving shaft to rotate, and the rotation of the first moving shaft drives the cleaning drive shaft to rotate, and the cleaning drive shaft provides power to enable the first cleaning mechanism and the second cleaning mechanism to clean the road surface; the measuring component is used to obtain the transverse and longitudinal elevation change data of the road surface, and synchronize the transverse and longitudinal elevation change data of the road surface to the basic model of the road section to be inspected; the transverse elevation change data of the road surface is matched with a preset marking threshold, and the longitudinal elevation change data of the road surface is matched with a preset marking threshold. When the transverse elevation change data of the road surface or the longitudinal elevation change data of the road surface exceeds the marking threshold, the marking component is used to mark the road surface, and the marking coordinates are synchronized to the basic model of the road section to be inspected; and a flatness report is generated.

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