CN109341630A - A kind of efficient spring heights cambered surface detection device - Google Patents
A kind of efficient spring heights cambered surface detection device Download PDFInfo
- Publication number
- CN109341630A CN109341630A CN201811331098.3A CN201811331098A CN109341630A CN 109341630 A CN109341630 A CN 109341630A CN 201811331098 A CN201811331098 A CN 201811331098A CN 109341630 A CN109341630 A CN 109341630A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- welded
- cambered surface
- detection device
- support base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
Abstract
The invention discloses a kind of efficient spring heights cambered surface detection devices, including pedestal and the detection slot that base top is arranged in, the bottom of the pedestal is fixedly connected with column, the bottom end of column is welded with support base, the two sides of the bottom of support base open up fluted, rotation hole is offered in the top inner wall of groove, screw rod is rotatably equipped in rotation hole, the bottom end of screw rod extends in corresponding groove, and the outside screw of screw rod is set with support rod, support rod is slidably mounted in corresponding groove, and two support rod sides close to each other are rotatably equipped with balancing pole, the two sides of the bottom of balancing pole, which contact, ball, the bottom side of ball is welded with supporting leg.The present invention has rational design, it is simple and practical, the difference in height between two balancing poles can be adjusted, and four supporting legs can be adjusted and extend to length below support base, and then it is convenient for the levelness of adjustment base and detection slot, be conducive to the accuracy for improving the detection of spring radian.
Description
Technical field
The present invention relates to spring detection device technical field more particularly to a kind of efficient spring heights cambered surface detection devices.
Background technique
Arc arc spring working environment is severe, and stress is unstable, compared to more easy fracture for straight spring.The radian and plane of spring
Degree, which must assure that, to be bonded suitably when movement with the spring radian in double mass flywheel, can guarantee flywheel in operation process friction in this way
It minimizes, so that torque stablizes output, guarantees the service life, the effect of double mass flywheel is played.Current arc spring inspection
Survey means are by the radian of projective tests arc spring, which has higher inaccuracy, and inefficiency.Through
Retrieval, application No. is 201721735261.3 patent documents to disclose a kind of arc spring detection plate, including pedestal and detection
Slot；Wherein, detection slot is horizontally set on the upper surface of pedestal, can detect the radian and flatness of arc spring to be detected simultaneously.
Detection slot outer arc is consistent with arc tolerance on the arc of arc spring to be detected, the arc of detection slot inner arc and arc spring to be detected
Lower tolerance is consistent；The depth of detection slot is that the diameter of arc spring to be measured adds parallelism tolerance value.By detecting arc to be measured
Whether spring can freely slide into detection slot, and not contact the inner arc and outer arc of detection slot, judge whether the arc of spring to be measured closes
Lattice；By the way that spring to be measured to be put into detection slot, detecting spring to be measured whether there is the region for being higher than detection groove depth, to judge
Whether spring plane degree to be measured is qualified.The device can simultaneously the radian and flatness of arc spring are detected, have compared with
High accuracy in detection and operability.
But there is also shortcoming, the levelness of above-mentioned design inconvenience adjustment base, the placed sides of pedestal for above-mentioned design
Will affect the levelness of detection slot when out-of-flatness, detection slot will reduce the accuracy of spring radian detection when being in heeling condition,
It is unfavorable for using therefore we have proposed a kind of efficient spring heights cambered surface detection devices for solving the above problems.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of efficient spring heights cambered surface detection devices.
A kind of efficient spring heights cambered surface detection device proposed by the present invention, including pedestal and the inspection that base top is arranged in
Slot is surveyed, the bottom of the pedestal is fixedly connected with column, and the bottom end of the column is welded with support base, the bottom of the support base
Two sides open up fluted, and rotation hole is offered in the top inner wall of the groove, is rotatably equipped with screw rod in the rotation hole,
The bottom end of the screw rod extends in corresponding groove, and the outside screw of screw rod is set with support rod, the support rod sliding
It is mounted in corresponding groove, and two support rod sides close to each other are rotatably equipped with balancing pole, the balancing pole
Two sides of the bottom, which contact, ball, and the bottom side of the ball is welded with supporting leg, and the bottom end of the supporting leg extends to support base
Lower section and be fixedly installed with non-slip mat；
Limit plate is movably installed on the outside of the supporting leg, the limit plate is welded on the inner wall of corresponding groove, described
Two lateral roofs of supporting leg are welded with latch plate, and the bottom of the latch plate is welded with spring, the bottom end of the spring with it is right
The top for the limit plate answered mutually is welded, and threaded hole, the threaded hole internal screw thread installation are offered in the top inner wall of the groove
There is screw rod, the outside fixing sleeve of the screw rod is equipped with first bearing, and the top side of the balancing pole offers mounting hole, described
The same draw bar being obliquely installed is rotatably equipped on the two sides inner wall of mounting hole, the top of the draw bar extends to balance
The top of bar is simultaneously hinged with the outer ring of corresponding first bearing.
Preferably, the top of the support rod offers thread groove, and the screw rod is threadedly coupled with corresponding thread groove.
Preferably, be rotatably equipped with the same shaft on the two sides inner wall of the mounting hole, the bottom end of the draw bar with
It mutually welds the top side of corresponding shaft.
Preferably, the outside fixing sleeve of the screw rod is equipped with second bearing, the outer ring of second bearing and corresponding rotation hole
Side wall mutually weld.
Preferably, the side that two balancing poles are located remotely from each other is welded with circular shaft, and the support rod rotation is set in correspondence
Circular shaft outside.
Preferably, the top of the screw rod and the top of screw rod extend to the top of support base and are respectively welded the first rotation
Button and the second knob.
Preferably, the non-slip mat is set as hemispherical dome structure, and the cross section of the supporting leg is rectangular configuration.
Preferably, rectangular opening is offered at the top of the limit plate, the supporting leg is flexibly connected with corresponding rectangular opening.
Compared with prior art, the beneficial effects of the present invention are:
(1) pass through pedestal, detection slot, column, support base, groove, rotation hole, screw rod, support rod, balancing pole, thread groove, second
Bearing and circular shaft match, and support base is placed on monitor station, place a levelling rod at the top of support base, observe level
Bubble in ruler, when bubble is in bosom, the top of support base and the upper surface of pedestal are in horizontality, and bubble is in
When heart position deviates, show that the upper surface of pedestal is in heeling condition, the one of screw rod of turn, screw rod passes through the second axis
It holds and is rotated in rotation hole, drive support rod to move up and down by thread groove when screw rod rotates, support rod is driven flat by circular shaft
Weighing apparatus bar moves up and down, and can adjust the difference in height between two balancing poles；
(2) pass through ball, supporting leg, limit plate, latch plate, spring, non-slip mat, mounting hole, shaft, threaded hole, screw rod, first
Bearing and draw bar match, the one of screw rod of turn, and screw rod drives when rotating and itself moves up and down, and screw rod drives first axle
It holds and moves up and down, first bearing pushes balancing pole to rotate around circular shaft by draw bar and shaft, and balancing pole pushes branch by ball
Support leg adjusts supporting leg and is located at the extension elongation below support base, by adjusting four supporting legs in the medial movement of limit plate
Extension elongation below support base is able to maintain at the top of support base horizontal when being placed on support base on monitor station
State guarantees that the upper surface of pedestal is in horizontality, avoids pedestal from tilting and influences the radian of spring and the standard of flatness detection
Exactness.
The present invention has rational design, simple and practical, can adjust the difference in height between two balancing poles, and can adjust four
Supporting leg extends to the length below support base, and then is convenient for the levelness of adjustment base and detection slot, is conducive to improve spring
The accuracy of radian detection.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of efficient spring heights cambered surface detection device proposed by the present invention；
Fig. 2 is a kind of structural schematic diagram of the part A of efficient spring heights cambered surface detection device proposed by the present invention；
Fig. 3 is a kind of structural schematic diagram of the part B of efficient spring heights cambered surface detection device proposed by the present invention；
Fig. 4 is a kind of structural schematic diagram of the C portion of efficient spring heights cambered surface detection device proposed by the present invention；
Fig. 5 is the side structure schematic view of part A in Fig. 1.
In figure: 1 pedestal, 2 detection slots, 3 columns, 4 support bases, 5 grooves, 6 rotation holes, 7 screw rods, 8 support rods, 9 balancing poles,
10 balls, 11 supporting legs, 12 limit plates, 13 latch plates, 14 springs, 15 non-slip mats, 16 mounting holes, 17 shafts, 18 threaded holes, 19
Screw rod, 20 first bearings, 21 draw bars, 22 thread grooves, 23 second bearings, 24 circular shafts.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
Embodiment
With reference to Fig. 1-5, a kind of efficient spring heights cambered surface detection device is proposed in the present embodiment, including pedestal 1 and set
The detection slot 2 at 1 top of pedestal is set, the bottom of pedestal 1 is fixedly connected with column 3, and the bottom end of column 3 is welded with support base 4, branch
The two sides of the bottom of support seat 4 open up fluted 5, and rotation hole 6, rotational installation in rotation hole 6 are offered in the top inner wall of groove 5
There is screw rod 7, the bottom end of screw rod 7 extends in corresponding groove 5, and the outside screw of screw rod 7 is set with support rod 8, support rod 8
It is slidably mounted in corresponding groove 5, and two support rods 8 side close to each other is rotatably equipped with balancing pole 9, balancing pole
9 two sides of the bottom, which contact, ball 10, and the bottom side of ball 10 is welded with supporting leg 11, and the bottom end of supporting leg 11 extends to support
The lower section of seat 4 is simultaneously fixedly installed with non-slip mat 15；The outside of supporting leg 11 is movably installed with limit plate 12, and limit plate 12 is welded on
On the inner wall of corresponding groove 5, two lateral roofs of supporting leg 11 are welded with latch plate 13, and the bottom of latch plate 13 is welded with bullet
Spring 14, the bottom end of spring 14 are mutually welded with the top of corresponding limit plate 12, offer threaded hole in the top inner wall of groove 5
18,18 internal screw thread of threaded hole is equipped with screw rod 19, and the outside fixing sleeve of screw rod 19 is equipped with first bearing 20, the top of balancing pole 9
Side offers mounting hole 16, and the same draw bar 21 being obliquely installed is rotatably equipped on the two sides inner wall of mounting hole 16, is led
The top for drawing bar 21 extends to the top of balancing pole 9 and is hinged with the outer ring of corresponding first bearing 20, in pedestal 1, detection
Slot 2, column 3, support base 4, groove 5, rotation hole 6, screw rod 7, support rod 8, balancing pole 9, thread groove 22, second bearing 23 and circle
Under the cooperation of axis 24, support base 4 is placed on monitor station, a levelling rod is placed at the top of support base 4, observes level
Bubble in ruler, when bubble is in bosom, the top of support base 4 and the upper surface of pedestal 1 are in horizontality, bubble with
When center deviates, show that the upper surface of pedestal 1 is in heeling condition, the one of screw rod 7 of turn, screw rod 7 passes through
Second bearing 23 rotates in rotation hole 6, drives support rod 8 to move up and down by thread groove 22 when screw rod 7 rotates, support rod 8
It drives balancing pole 9 to move up and down by circular shaft 24, the difference in height between two balancing poles 9 can be adjusted；In ball 10, supporting leg
11, limit plate 12, latch plate 13, spring 14, non-slip mat 15, mounting hole 16, shaft 17, threaded hole 18, screw rod 19, first bearing
20 and draw bar 21 cooperation under, the one of screw rod 19 of turn, screw rod 19 drives and itself moves up and down when rotating, screw rod 19
First bearing 20 is driven to move up and down, first bearing 20 pushes balancing pole 9 to rotate around circular shaft 24 by draw bar 21 and shaft 17,
Balancing pole 9 pushes supporting leg 11 in the medial movement of limit plate 12 by ball 10, adjusts supporting leg 11 and is located at 4 lower section of support base
Extension elongation, the extension elongation being located at below support base 4 by adjusting four supporting legs 11 makes support base 4 be placed on detection
The top of support base 4 is able to maintain horizontality when on platform, guarantees that the upper surface of pedestal 1 is in horizontality, pedestal 1 is avoided to incline
The radian of spring and the accuracy of flatness detection are tiltedly influenced, the present invention has rational design, and it is simple and practical, two can be adjusted and put down
Difference in height between weighing apparatus bar 9, and the length that four supporting legs 11 extend to 4 lower section of support base can be adjusted, and then convenient for adjusting
The levelness of pedestal 1 and detection slot 2 is conducive to the accuracy for improving the detection of spring radian.
In the present embodiment, the top of support rod 8 offers thread groove 22, and screw rod 7 is threadedly coupled with corresponding thread groove 22,
The same shaft 17, the top side of the bottom end of draw bar 21 and corresponding shaft 17 are rotatably equipped on the two sides inner wall of mounting hole 16
It mutually welds, the outside fixing sleeve of screw rod 7 is equipped with second bearing 23, the side wall of the outer ring of second bearing 23 and corresponding rotation hole 6
It mutually welds, the side that two balancing poles 9 are located remotely from each other is welded with circular shaft 24, and the rotation of support rod 8 is set in corresponding circular shaft 24
Outside, the top of screw rod 7 and the top of screw rod 19 extend to the top of support base 4 and are respectively welded the first knob and second
Knob, non-slip mat 15 are set as hemispherical dome structure, and the cross section of supporting leg 11 is rectangular configuration, and the top of limit plate 12 offers
Rectangular opening, supporting leg 11 are flexibly connected with corresponding rectangular opening, in pedestal 1, detection slot 2, column 3, support base 4, groove 5, are turned
Under the cooperation for moving hole 6, screw rod 7, support rod 8, balancing pole 9, thread groove 22, second bearing 23 and circular shaft 24, support base 4 is put
It sets on monitor station, places a levelling rod at the top of support base 4, observe the bubble in levelling rod, bubble is in bosom
When, the top of support base 4 and the upper surface of pedestal 1 are in horizontality and show bottom when bubble and center deviate
The upper surface of seat 1 is in heeling condition, the one of screw rod 7 of turn, and screw rod 7 is rotated in rotation hole 6 by second bearing 23,
Support rod 8 is driven to move up and down by thread groove 22 when screw rod 7 rotates, support rod 8 is driven by circular shaft 24 and moved down on balancing pole 9
It is dynamic, the difference in height between two balancing poles 9 can be adjusted；In ball 10, supporting leg 11, limit plate 12, latch plate 13, spring
14, under the cooperation of non-slip mat 15, mounting hole 16, shaft 17, threaded hole 18, screw rod 19, first bearing 20 and draw bar 21, rotation
One of screw rod 19 is moved, screw rod 19 drives when rotating and itself moves up and down, and screw rod 19 drives first bearing 20 to move up and down, the
One bearing 20 pushes balancing pole 9 to rotate around circular shaft 24 by draw bar 21 and shaft 17, and balancing pole 9 pushes support by ball 10
Leg 11 adjusts the extension elongation that supporting leg 11 is located at 4 lower section of support base, by adjusting four branch in the medial movement of limit plate 12
Support leg 11 is located at the extension elongation of 4 lower section of support base, and the top of support base 4 is protected when support base 4 being enable to be placed on monitor station
Water holding level state guarantees that the upper surface of pedestal 1 be in horizontality, avoids the inclination of pedestal 1 and influences the radian and plane of spring
The accuracy of detection is spent, the present invention has rational design, and it is simple and practical, the difference in height between two balancing poles 9 can be adjusted, and can
It adjusts four supporting legs 11 and extends to the length of 4 lower section of support base, and then be convenient for the levelness of adjustment base 1 and detection slot 2, have
Conducive to the accuracy for improving the detection of spring radian.
In the present embodiment, when in use, support base 4 is placed on monitor station, places a water at the top of support base 4
Object staff observes the bubble in levelling rod, and when bubble is in bosom, the top of support base 4 and the upper surface of pedestal 1 are in water
Level state shows that the upper surface of pedestal 1 is in heeling condition when bubble and when Centre position deviation, turn at this time one of them
Screw rod 7, screw rod 7 are rotated in rotation hole 6 by second bearing 23, due to being threadedly coupled between support rod 8 and screw rod 7, silk
Support rod 8 is driven to move up and down by thread groove 22 when bar 7 rotates, support rod 8 is driven by circular shaft 24 and moved down on balancing pole 9
It is dynamic, can adjust the difference in height between two balancing poles 9, the one of screw rod 19 of turn, due to screw rod 19 and threaded hole 18 it
Between to be threadedly coupled, screw rod 19 drives and itself moves up and down when rotating, and screw rod 19 drives first bearing 20 to move up and down at this time, the
One bearing 20 pushes balancing pole 9 to start to rotate around circular shaft 24 by draw bar 21 and shaft 17, and balancing pole 9 is pushed by ball 10
Supporting leg 11 can adjust the extension elongation that supporting leg 11 is located at 4 lower section of support base, pass through tune in the medial movement of limit plate 12
The extension elongation that four supporting legs 11 are located at 4 lower section of support base is saved, so that support base 4 when support base 4 is placed on monitor station
Top is able to maintain horizontality, and then guarantees that the upper surface of pedestal 1 is in horizontality, and pedestal 1 is avoided to tilt and influence bullet
The accuracy of radian and the flatness detection of spring.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of efficient spring heights cambered surface detection device, the detection slot (2) including pedestal (1) and setting at the top of pedestal (1),
It is characterized in that, the bottom of the pedestal (1) is fixedly connected with column (3), the bottom end of the column (3) is welded with support base
(4), the two sides of the bottom of the support base (4) open up fluted (5), offer rotation in the top inner wall of the groove (5)
Hole (6), the rotation hole (6) is interior to be rotatably equipped with screw rod (7), and the bottom end of the screw rod (7) extends to corresponding groove (5)
It is interior, and the outside screw of screw rod (7) is set with support rod (8), the support rod (8) is slidably mounted in corresponding groove (5),
And two support rod (8) sides close to each other are rotatably equipped with balancing pole (9), the two sides of the bottom of the balancing pole (9) are equal
Contact has ball (10), and the bottom side of the ball (10) is welded with supporting leg (11), and the bottom end of the supporting leg (11) extends to
The lower section of support base (4) is simultaneously fixedly installed with non-slip mat (15)；
It is movably installed with limit plate (12) on the outside of the supporting leg (11), the limit plate (12) is welded on corresponding groove
(5) on inner wall, two lateral roofs of the supporting leg (11) are welded with latch plate (13), the bottom weldering of the latch plate (13)
It is connected to spring (14), the bottom end of the spring (14) is mutually welded with the top of corresponding limit plate (12), the top of the groove (5)
It is offered on portion's inner wall threaded hole (18), threaded hole (18) internal screw thread is equipped with screw rod (19), outside the screw rod (19)
Side fixing sleeve is equipped with first bearing (20), and the top side of the balancing pole (9) offers mounting hole (16), the mounting hole
(16) the same draw bar (21) being obliquely installed is rotatably equipped on two sides inner wall, the top of the draw bar (21) extends
To balancing pole (9) top and be hinged with the outer ring of corresponding first bearing (20).
2. a kind of efficient spring heights cambered surface detection device according to claim 1, which is characterized in that the support rod
(8) top offers thread groove (22), and the screw rod (7) is threadedly coupled with corresponding thread groove (22).
3. a kind of efficient spring heights cambered surface detection device according to claim 1, which is characterized in that the mounting hole
(16) it is rotatably equipped on two sides inner wall the same shaft (17), the bottom end of the draw bar (21) and corresponding shaft (17)
Top side mutually weld.
4. a kind of efficient spring heights cambered surface detection device according to claim 1, which is characterized in that the screw rod (7)
Outside fixing sleeve be equipped with second bearing (23), the outer ring of second bearing (23) is mutually welded with the side wall of corresponding rotation hole (6).
5. a kind of efficient spring heights cambered surface detection device according to claim 1, which is characterized in that two balancing poles
(9) side being located remotely from each other is welded with circular shaft (24), and support rod (8) rotation is set in the outer of corresponding circular shaft (24)
Side.
6. a kind of efficient spring heights cambered surface detection device according to claim 1, which is characterized in that the screw rod (7)
Top and the top of screw rod (19) extend to the top of support base (4) and be respectively welded the first knob and the second knob.
7. a kind of efficient spring heights cambered surface detection device according to claim 1, which is characterized in that the non-slip mat
(15) it is set as hemispherical dome structure, the cross section of the supporting leg (11) is rectangular configuration.
8. a kind of efficient spring heights cambered surface detection device according to claim 1, which is characterized in that the limit plate
(12) rectangular opening is offered at the top of, the supporting leg (11) is flexibly connected with corresponding rectangular opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811331098.3A CN109341630A (en) | 2018-11-09 | 2018-11-09 | A kind of efficient spring heights cambered surface detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811331098.3A CN109341630A (en) | 2018-11-09 | 2018-11-09 | A kind of efficient spring heights cambered surface detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109341630A true CN109341630A (en) | 2019-02-15 |
Family
ID=65312701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811331098.3A Pending CN109341630A (en) | 2018-11-09 | 2018-11-09 | A kind of efficient spring heights cambered surface detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109341630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945022A (en) * | 2019-03-26 | 2019-06-28 | 平庆义 | A kind of mechanical equipment levelling device |
| CN112629476A (en) * | 2020-09-08 | 2021-04-09 | 阜阳市科信交通工程试验检测有限公司 | Road deceleration strip's roughness detection device |
-
2018
- 2018-11-09 CN CN201811331098.3A patent/CN109341630A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945022A (en) * | 2019-03-26 | 2019-06-28 | 平庆义 | A kind of mechanical equipment levelling device |
| CN112629476A (en) * | 2020-09-08 | 2021-04-09 | 阜阳市科信交通工程试验检测有限公司 | Road deceleration strip's roughness detection device |
| CN112629476B (en) * | 2020-09-08 | 2023-11-03 | 阜阳市科信交通工程试验检测有限公司 | Flatness detection device for road deceleration strip |
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