CN112554013A - Road surface flatness measuring device and measuring method thereof - Google Patents
Road surface flatness measuring device and measuring method thereof Download PDFInfo
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- CN112554013A CN112554013A CN201910918674.2A CN201910918674A CN112554013A CN 112554013 A CN112554013 A CN 112554013A CN 201910918674 A CN201910918674 A CN 201910918674A CN 112554013 A CN112554013 A CN 112554013A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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Abstract
The invention discloses a pavement evenness measuring device which comprises a base assembly, a rotating rule assembly and a measuring column assembly, wherein the base assembly comprises a disc, a door-shaped support, a baffle ring, a positioning column, a middle shaft and limiting rings, the middle shaft is fixedly connected to the center position of the upper end of the disc, the two limiting rings are fixedly connected to the middle shaft, the door-shaped support is fixedly connected to the upper end of the disc, the positioning column is vertically and slidably connected to the door-shaped support, the baffle ring is fixedly connected to the upper end of the positioning column, and a compression spring I is sleeved on the positioning column between the baffle ring and the door-shaped support.
Description
Technical Field
The invention relates to a membrane material external material, in particular to a road surface flatness measuring device and a measuring method thereof.
Background
The road surface flatness is one of the main technical indexes for evaluating the road surface quality, and is related to the safety and comfort of driving, the impact force on the road surface and the service life, the uneven road surface can increase the driving resistance and can cause the vehicle to generate additional vibration action, the vibration action can cause the bumping of driving, the speed and safety of driving and the stability of driving and the comfort of passengers, meanwhile, the vibration action can also apply impact force on the road surface, thereby intensifying the damage of the road surface and automobile parts and the abrasion of tires and increasing the oil consumption. In order to reduce the vibration impact force, improve the driving speed and improve the driving comfort and safety, the road surface needs to keep certain flatness, and the flatness directly reflects the driving comfort of the vehicle and the safety and the service life of the road surface. The detection of the pavement evenness can provide important information for decision makers, so that the decision makers can make optimization decisions for pavement maintenance, overhaul and the like. On the other hand, the detection of the pavement evenness can accurately provide information of the pavement construction quality, and an objective index for quality evaluation is provided for pavement construction. In the prior art, an instrument for measuring the pavement evenness is huge and is inconvenient to use. Therefore, it is necessary to design a road flatness measuring device with a simple structure.
Disclosure of Invention
The present invention is directed to a road flatness measuring device to solve the above problems in the background art.
In order to realize the purpose, the invention provides the following technical scheme: a road surface flatness measuring device comprises a base assembly, a rotary ruler assembly and a measuring column assembly, wherein the base assembly comprises a disc, a door-shaped support, a baffle ring, a positioning column, a middle shaft and two limiting rings, the middle shaft is fixedly connected to the central position of the upper end of the disc, the two limiting rings are fixedly connected to the middle shaft, the door-shaped support is fixedly connected to the upper end of the disc, the positioning column is vertically and slidably connected to the door-shaped support, the baffle ring is fixedly connected to the upper end of the positioning column, and a compression spring I is sleeved on the positioning column between the baffle ring and the door-shaped support; when the road surface roughness is measured, place the disc subaerial, compression spring I on the reference column gives the ascending power of reference column all the time for the reference column has the trend of rebound all the time, and centraxonial effect is for supplying rotary drum and rotary ruler to rotate.
The rotary ruler component comprises a rotary drum, rotary rulers, scale marks, connecting pieces, a fixed sleeve, a circular ring and a rear piece, wherein the rotary rulers are fixedly connected to the left side and the right side of the rotary drum, a plurality of scale marks are uniformly distributed on the two rotary rulers from top to bottom, the rotary drum is rotatably connected to the middle shaft, the two limiting rings are respectively attached to the upper side and the lower side of the rotary drum, the lower end of the rotary drum is fixedly connected with the circular ring, the circular ring and the rotary drum are coaxially arranged, the upper end of the positioning column is propped against the bottom surface of the circular ring, the lower ends of the two rotary rulers are respectively and fixedly connected with a plurality of connecting pieces, the lower ends of the connecting pieces are respectively and fixedly connected with the fixed sleeve, the rear sides of the two rotary rulers are respectively and fixedly connected with a plurality of rear pieces, and the plurality of rear pieces; the rotary drum can rotate by taking the axis of the central shaft as a shaft, and then the two rotary rulers can also rotate along with the rotary drum by taking the axis of the central shaft as the shaft, so that the two rotary rulers can be rotated to different positions, and the flatness of the road surface at different positions can be measured within a certain range. Because the upper end top of reference column is on the bottom surface of ring, so the reference column can be fixed the ring, and then measures to fix two rotary rulers, prevents that the rotary ruler from rotating by oneself.
The measuring column assembly comprises a lifting column, a spring loop bar and a convex column, the convex column is fixedly connected to the lifting column, and the spring loop bar is fixedly connected to the upper end of the convex column; the measuring column subassembly is provided with a plurality ofly, and is a plurality of lifting column sliding connection respectively is a plurality of fixed sheathe in, it is a plurality of lifting column all is located two the front side of commentaries on classics chi, it is a plurality of sliding connection is respectively in the upper end of spring loop pole is a plurality of on the back plate, it is a plurality of all cup jointed compression spring II on the spring loop pole, a plurality of compression spring II are located a plurality of respectively the downside of back plate. After the position adjustment of two commentaries on classics chi, a plurality of lift posts receive the downward power that a plurality of compression spring II gave respectively for the lower extreme of a plurality of lift posts all pushes up on the road surface, because the height of the different positions on ground is slightly different, thereby the upper end of a plurality of lift posts is in different positions, can confirm the position of the upper end of a plurality of lift posts according to the scale mark on the commentaries on classics chi, confirm the roughness on road surface according to the difference of the upper end height of a plurality of lift posts.
In a further embodiment, the base component further comprises a plurality of leveling screws, a plurality of leveling screws are annularly and uniformly distributed at the edge of the disc, and the plurality of leveling screws are connected with the disc through threads. The leveling screws can be rotated to rise and fall, and the leveling degree of the disc is adjusted.
In a further embodiment, the base assembly further comprises a bubble level gauge, two bubble level gauges are fixedly connected to the upper side of the disc, and the two bubble level gauges are perpendicular to each other. When can make and need adjust the disc to the horizontality on the horizontally road surface, can adjust the disc to the horizontality on the horizontally road surface through two bubble spirit levels, carry out the road surface roughness measurement on the horizontally road surface.
In a further embodiment, the measuring column assembly further comprises a limiting pin, the upper ends of the plurality of lifting columns are fixedly connected with the limiting pin, and the plurality of limiting pins are respectively located at the upper ends of the plurality of fixing sleeves. The function of the limiting pins is to prevent the lifting columns from being separated from the fixing sleeves.
In a further embodiment, the lower ends of the leveling screws are fixedly connected with anti-skid gaskets. The anti-skidding gasket can play an anti-skidding role, and the disc is prevented from sliding during measurement, so that the measurement result is not accurate.
A measuring method of a road surface flatness measuring device specifically comprises the following steps:
the method comprises the following steps: when the pavement evenness is measured, the disc is placed on the ground, the compression spring I on the positioning column always gives an upward force to the positioning column, so that the positioning column always has an upward moving trend, and the middle shaft is used for rotating the rotary drum and the rotary ruler;
step two: the rotating cylinder can rotate by taking the axis of the central shaft as the axis, and the two rotating rulers can also rotate along with the rotating cylinder by taking the axis of the central shaft as the axis;
step three: the two rotary rulers are rotated to different positions, and then the road surface at different positions is measured in a certain range.
Compared with the prior art, the invention has the beneficial effects that:
1. this road flatness measuring device, put fixedly connected with axis through the upper end central point of disc, two spacing rings of epaxial fixedly connected with, the upper end fixedly connected with door shape support of disc, vertical sliding connection has the reference column on the door shape support, the upper end fixedly connected with of reference column keeps off the ring, keep off and cup jointed compression spring I on the reference column between ring and the door shape support, make when road flatness is measured, place the disc subaerial, the ascending power of reference column is given all the time to compression spring I on the reference column, make the reference column have rebound's trend all the time, centraxonial effect supplies rotary drum and commentaries on classics chi to rotate.
2. The pavement evenness measuring device is characterized in that rotating rulers are fixedly connected with the left side and the right side of a rotating drum, a plurality of scale marks are uniformly distributed on the two rotating rulers from top to bottom, the rotating drum is rotatably connected on a central shaft, two limiting rings are respectively attached to the upper side and the lower side of the rotating drum, the lower end of the rotating drum is fixedly connected with a circular ring, the circular ring and the rotating drum are coaxially arranged, the upper end of a positioning column is propped against the bottom surface of the circular ring, the lower ends of the two rotating rulers are respectively fixedly connected with a plurality of connecting pieces, the lower ends of the connecting pieces are respectively fixedly connected with a fixing sleeve, the rear sides of the two rotating rulers are respectively fixedly connected with a plurality of rear pieces, and the rear pieces are respectively positioned above the fixing, and then two rotary rulers can also rotate along with the rotary drum by taking the axis of the central shaft as a shaft, the two rotary rulers are rotated to different positions, and the flatness of the road surface at different positions is measured within a certain range. Because the upper end top of reference column is on the bottom surface of ring, so the reference column can be fixed the ring, and then measures to fix two rotary rulers, prevents that the rotary ruler from rotating by oneself.
3. The road surface flatness measuring device is fixedly connected with a spring sleeve rod through the upper end of a convex column; the measuring column subassembly is provided with a plurality ofly, a plurality of lift post difference sliding connection are sheathe in at a plurality of fixed, a plurality of lift posts all are located two front sides that change the chi, sliding connection is on a plurality of back plates respectively in the upper end of a plurality of spring loop poles, compression spring II has all been cup jointed on a plurality of spring loop poles, a plurality of compression spring II are located the downside of a plurality of back plates respectively, make the position adjustment back that changes two chi, a plurality of lift posts receive the decurrent power that a plurality of compression spring II gave respectively, make the lower extreme of a plurality of lift posts all push up on the road surface, because the height of the different positions in ground is slightly different, thereby the upper end of a plurality of lift posts is in different positions, can confirm the position of the upper end of a plurality of lift posts according to the scale mark on changeing the chi, confirm the roughness on road surface according to the difference of the upper end height of a plurality of lift posts.
4. This road surface roughness measuring device is the annular equipartition through the edge position of disc and has a plurality of leveling screws, and a plurality of leveling screws all are connected with the disc through the screw for a plurality of leveling screws can the rotating rise and reduce, and then the level degree of adjustment disc.
5. This road flatness measuring device, two bubble spirit levels of upside fixedly connected with through the disc, two bubble spirit level mutually perpendicular set up for when needing to adjust the disc to the horizontality on the horizontally road surface, can adjust the disc to the horizontality on the horizontally road surface through two bubble spirit levels, carry out the road flatness measurement on the horizontally road surface.
6. This road flatness measuring device, through the equal fixedly connected with spacer pin in the upper end of a plurality of lift posts, a plurality of spacer pins are located the upper end of a plurality of fixed covers respectively for the effect of a plurality of spacer pins prevents that a plurality of lift posts from breaking away from a plurality of fixed covers.
Drawings
Fig. 1 is a schematic structural diagram of a road flatness measuring apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a road flatness measuring apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a base assembly;
FIG. 4 is a first schematic structural view of a rotary ruler assembly;
FIG. 5 is a second schematic structural view of the tape measure assembly;
fig. 6 is a schematic structural diagram of a measuring column assembly.
In the figure: a base assembly 1; 1-1 of a disc; leveling screws 1-2; 1-3 of a door-shaped bracket; 1-4 parts of a baffle ring; 1-5 of a positioning column; 1-6 of a middle shaft; 1-7 parts of a limiting ring; 1-8 of a bubble level meter; a tape rotating assembly 2; a rotary drum 2-1; rotating a ruler by 2-2; 2-3 of scale mark; connecting pieces 2-4; 2-5 of a fixed sleeve; 2-6 of a circular ring; 2-7 of a back sheet; a measuring column assembly 3; a lifting column 3-1; 3-2 of a limiting pin; 3-3 parts of a spring sleeve rod; 3-4 of convex columns.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a road surface flatness measuring device, which comprises a base assembly 1, a rotating ruler assembly 2 and a measuring column assembly 3, the base component 1 comprises a disc 1-1, a door-shaped bracket 1-3, a baffle ring 1-4, a positioning column 1-5, a middle shaft 1-6 and a limit ring 1-7, the central position of the upper end of the disc 1-1 is fixedly connected with the middle shaft 1-6, the middle shaft 1-6 is fixedly connected with two limit rings 1-7, the upper end of the disc 1-1 is fixedly connected with the door-shaped bracket 1-3, the door-shaped support 1-3 is vertically connected with the positioning column 1-5 in a sliding manner, the upper end of the positioning column 1-5 is fixedly connected with the baffle ring 1-4, a compression spring I is sleeved on the positioning column 1-5 between the baffle ring 1-4 and the door-shaped support 1-3; when the pavement evenness is measured, the disc 1-1 is placed on the ground, the compression spring I on the positioning column 1-5 always gives an upward force to the positioning column 1-5, so that the positioning column 1-5 always has a tendency of moving upwards, and the middle shaft 1-6 is used for rotating the rotary drum 2-1 and the rotary ruler 2-2.
The rotating rule component 2 comprises a rotating drum 2-1, rotating rules 2-2, scale marks 2-3, connecting pieces 2-4, a fixing sleeve 2-5, a ring 2-6 and a rear piece 2-7, the left side and the right side of the rotating drum 2-1 are fixedly connected with the rotating rules 2-2, a plurality of scale marks 2-3 are uniformly distributed on the two rotating rules 2-2 from top to bottom, the rotating drum 2-1 is rotatably connected on the central shaft 1-6, the two limit rings 1-7 are respectively attached to the upper side and the lower side of the rotating drum 2-1, the lower end of the rotating drum 2-1 is fixedly connected with the ring 2-6, the ring 2-6 and the rotating drum 2-1 are coaxially arranged, the upper ends of the positioning columns 1-5 are pressed against the bottom surfaces of the ring 2-6, the lower ends of the two rotating rulers 2-2 are fixedly connected with a plurality of connecting pieces 2-4, the lower ends of the connecting pieces 2-4 are fixedly connected with the fixing sleeves 2-5, the rear sides of the two rotating rulers 2-2 are fixedly connected with a plurality of rear pieces 2-7, and the rear pieces 2-7 are respectively positioned above the fixing sleeves 2-5; the rotary drum 2-1 can rotate by taking the axis of the central shaft 1-6 as an axis, and then the two rotary rulers 2-2 can also rotate along with the rotary drum 2-1 by taking the axis of the central shaft 1-6 as an axis, so that the two rotary rulers 2-2 can be rotated to different positions, and then the flatness of the road surfaces at different positions can be measured in a certain range. The upper ends of the positioning columns 1-5 are propped against the bottom surfaces of the circular rings 2-6, so that the circular rings 2-6 can be fixed by the positioning columns 1-5, and the two rotary rulers 2-2 are further fixed during measurement, so that the rotary rulers 2-2 are prevented from rotating automatically.
The measuring column assembly 3 comprises a lifting column 3-1, a spring loop bar 3-3 and a convex column 3-4, the convex column 3-1 is fixedly connected with the convex column 3-4, and the upper end of the convex column 3-4 is fixedly connected with the spring loop bar 3-3; the measuring column assembly 3 is provided with a plurality of lifting columns 3-1 which are respectively connected to the plurality of fixing sleeves 2-5 in a sliding manner, the plurality of lifting columns 3-1 are positioned at the front sides of the two rotating rulers 2-2, the upper ends of the plurality of spring loop rods 3-3 are respectively connected to the plurality of back pieces 2-7 in a sliding manner, the plurality of spring loop rods 3-3 are respectively sleeved with compression springs II, and the plurality of compression springs II are respectively positioned at the lower sides of the plurality of back pieces 2-7. After the positions of the two rotary rulers 2-2 are adjusted, the plurality of lifting columns 3-1 are respectively subjected to downward force given by the plurality of compression springs II, so that the lower ends of the plurality of lifting columns 3-1 are all propped against the road surface, the upper ends of the plurality of lifting columns 3-1 are positioned at different positions due to slightly different heights of different positions on the ground, the positions of the upper ends of the plurality of lifting columns 3-1 can be determined according to the scale marks 2-3 on the rotary rulers 2-2, and the flatness of the road surface is determined according to the difference of the heights of the upper ends of the plurality of lifting columns 3-1.
In a further embodiment, the base assembly 1 further comprises leveling screws 1-2, a plurality of leveling screws 1-2 are annularly and uniformly distributed at the edge of the disc 1-1, and the plurality of leveling screws 1-2 are connected with the disc 1-1 through threads. The leveling screws 1-2 can be rotated to be lifted and lowered, and the level degree of the disc 1-1 can be adjusted.
In a further embodiment, the base assembly 1 further comprises bubble levels 1-8, two bubble levels 1-8 are fixedly connected to the upper side of the disc 1-1, and the two bubble levels 1-8 are arranged perpendicular to each other. When the disc 1-1 needs to be adjusted to be in a horizontal state on a horizontal road surface, the disc 1-1 can be adjusted to be in the horizontal state on the horizontal road surface through the two bubble levels 1-8, and road surface flatness measurement is carried out on the horizontal road surface.
In a further embodiment, the measuring column assembly 3 further includes a limiting pin 3-2, the upper ends of the plurality of lifting columns 3-1 are fixedly connected with the limiting pin 3-2, and the plurality of limiting pins 3-2 are respectively located at the upper ends of the plurality of fixing sleeves 2-5. The plurality of stopper pins 3-2 can be made to function to prevent the plurality of lifting columns 3-1 from being separated from the plurality of fixing sleeves 2-5.
In a further embodiment, the lower ends of the leveling screws 1-2 are fixedly connected with anti-skid gaskets. The anti-slip gasket can play an anti-slip role, and the disc 1-1 is prevented from sliding during measurement, so that the measurement result is not accurate.
The working principle is as follows: when the pavement evenness is measured, the disc 1-1 is placed on the ground, the compression spring I on the positioning column 1-5 always gives an upward force to the positioning column 1-5, so that the positioning column 1-5 always has a tendency of moving upwards, and the middle shaft 1-6 is used for rotating the rotary drum 2-1 and the rotary ruler 2-2. The rotary drum 2-1 can rotate by taking the axis of the central shaft 1-6 as an axis, and then the two rotary rulers 2-2 can also rotate along with the rotary drum 2-1 by taking the axis of the central shaft 1-6 as an axis, so that the two rotary rulers 2-2 can be rotated to different positions, and then the flatness of the road surfaces at different positions can be measured in a certain range. The upper ends of the positioning columns 1-5 are propped against the bottom surfaces of the circular rings 2-6, so that the circular rings 2-6 can be fixed by the positioning columns 1-5, and the two rotary rulers 2-2 are further fixed during measurement, so that the rotary rulers 2-2 are prevented from rotating automatically. After the positions of the two rotary rulers 2-2 are adjusted, the plurality of lifting columns 3-1 are respectively subjected to downward force given by the plurality of compression springs II, so that the lower ends of the plurality of lifting columns 3-1 are all propped against the road surface, the upper ends of the plurality of lifting columns 3-1 are positioned at different positions due to slightly different heights of different positions on the ground, the positions of the upper ends of the plurality of lifting columns 3-1 can be determined according to the scale marks 2-3 on the rotary rulers 2-2, and the flatness of the road surface is determined according to the difference of the heights of the upper ends of the plurality of lifting columns 3-1. The leveling screws 1-2 can be rotated to be lifted and lowered, so that the level degree of the disc 1-1 can be adjusted. When the disc 1-1 needs to be adjusted to be in a horizontal state on a horizontal road surface, the disc 1-1 can be adjusted to be in the horizontal state on the horizontal road surface through the two bubble levels 1-8, and road surface flatness measurement is carried out on the horizontal road surface. The plurality of stopper pins 3-2 serve to prevent the plurality of lifting columns 3-1 from being separated from the plurality of fixing sleeves 2-5. The anti-slip gasket plays an anti-slip role, and prevents the disc 1-1 from sliding during measurement, so that the measurement result is not accurate.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The utility model provides a road flatness measuring device, includes base subassembly (1), commentaries on classics chi subassembly (2) and measuring column subassembly (3), its characterized in that: the base assembly (1) comprises a disc (1-1), a door-shaped support (1-3), a baffle ring (1-4), a positioning column (1-5), a center shaft (1-6) and a limiting ring (1-7), the center position of the upper end of the disc (1-1) is fixedly connected with the center shaft (1-6), the center shaft (1-6) is fixedly connected with two limiting rings (1-7), the upper end of the disc (1-1) is fixedly connected with the door-shaped support (1-3), the positioning column (1-5) is vertically connected onto the door-shaped support (1-3) in a sliding manner, the upper end of the positioning column (1-5) is fixedly connected with the baffle ring (1-4), and a compression spring is sleeved on the positioning column (1-5) between the baffle ring (1-4) and the door-shaped support (1-3) I;
the rotating rule component (2) comprises a rotating drum (2-1), rotating rules (2-2), scale marks (2-3), connecting sheets (2-4), a fixed sleeve (2-5), circular rings (2-6) and a rear sheet (2-7), the rotating rules (2-2) are fixedly connected to the left side and the right side of the rotating drum (2-1), a plurality of scale marks (2-3) are uniformly distributed on the two rotating rules (2-2) from top to bottom, the rotating drum (2-1) is rotatably connected to the central shaft (1-6), the two limiting rings (1-7) are respectively attached to the upper side and the lower side of the rotating drum (2-1), the circular rings (2-6) are fixedly connected to the lower end of the rotating drum (2-1), and the circular rings (2-6) and the rotating drum (2-1) are coaxially arranged, the upper ends of the positioning columns (1-5) are abutted against the bottom surfaces of the circular rings (2-6), the lower ends of the two rotary rulers (2-2) are fixedly connected with a plurality of connecting pieces (2-4), the lower ends of the connecting pieces (2-4) are fixedly connected with the fixing sleeves (2-5), the rear sides of the two rotary rulers (2-2) are fixedly connected with a plurality of rear pieces (2-7), and the rear pieces (2-7) are respectively positioned above the fixing sleeves (2-5);
the measuring column assembly (3) comprises a lifting column (3-1), a spring loop bar (3-3) and a convex column (3-4), the convex column (3-4) is fixedly connected to the lifting column (3-1), and the spring loop bar (3-3) is fixedly connected to the upper end of the convex column (3-4); the measuring column assembly (3) is provided with a plurality of lifting columns (3-1) which are respectively connected onto the fixed sleeves (2-5) in a sliding mode, the lifting columns (3-1) are located on the front sides of the two rotating rulers (2-2), the spring loop rods (3-3) are connected onto the rear pieces (2-7) in a sliding mode, compression springs II are sleeved on the spring loop rods (3-3), and the compression springs II are located on the lower sides of the rear pieces (2-7) respectively.
2. A road flatness measuring device as defined in claim 1, wherein: the base component (1) further comprises leveling screws (1-2), the edge position of the disc (1-1) is annularly and uniformly distributed with a plurality of leveling screws (1-2), and the leveling screws (1-2) are connected with the disc (1-1) through threads.
3. A road flatness measuring device as defined in claim 2, wherein: the base component (1) further comprises bubble levels (1-8), the upper side of the disc (1-1) is fixedly connected with two bubble levels (1-8), and the two bubble levels (1-8) are perpendicular to each other.
4. A road flatness measuring device as defined in claim 3, wherein: the measuring column assembly (3) further comprises a limiting pin (3-2), the upper ends of the lifting columns (3-1) are fixedly connected with the limiting pin (3-2), and the limiting pins (3-2) are respectively located at the upper ends of the fixing sleeves (2-5).
5. A road flatness measuring device according to claim 4, in which: the lower ends of the leveling screws (1-2) are fixedly connected with anti-skid gaskets.
6. A measuring method of a road surface flatness measuring device is characterized in that: the method specifically comprises the following steps:
the method comprises the following steps: when the pavement evenness is measured, the disc (1-1) is placed on the ground, the compression spring I on the positioning column (1-5) always gives upward force to the positioning column (1-5), so that the positioning column (1-5) always has an upward moving trend, and the middle shaft (1-6) is used for rotating the rotary drum (2-1) and the rotary ruler (2-2);
step two: the rotary drum (2-1) can rotate by taking the axis of the middle shaft (1-6) as an axis, and then the two rotary rulers (2-2) can also rotate along with the rotary drum (2-1) by taking the axis of the middle shaft (1-6) as an axis;
step three: the two rotary rulers (2-2) are rotated to different positions, and then the planeness of the road surfaces at different positions is measured within a certain range.
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| CN201910918674.2A CN112554013A (en) | 2019-09-26 | 2019-09-26 | Road surface flatness measuring device and measuring method thereof |
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| CN201910918674.2A CN112554013A (en) | 2019-09-26 | 2019-09-26 | Road surface flatness measuring device and measuring method thereof |
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| CN207540530U (en) * | 2017-12-11 | 2018-06-26 | 江苏大洲工程项目管理有限公司 | Theodolite base |
| CN209412670U (en) * | 2019-01-17 | 2019-09-20 | 北京路桥瑞通科技发展有限公司 | A kind of road and bridge flatness detecting device |
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Application publication date: 20210326 |