CN1053954A - Measurer for soft road surface unevenness - Google Patents
Measurer for soft road surface unevenness Download PDFInfo
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- CN1053954A CN1053954A CN 90100604 CN90100604A CN1053954A CN 1053954 A CN1053954 A CN 1053954A CN 90100604 CN90100604 CN 90100604 CN 90100604 A CN90100604 A CN 90100604A CN 1053954 A CN1053954 A CN 1053954A
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- testing
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- soft road
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Abstract
Soft road roughness testing tool of the present invention belongs to a kind of soft road surface testing tool, its principal character is: three acceleration transducers that are contained on three testing wheel wheel shafts of tester, acceleration signal when the measurement tester is towed on the wheel shaft, send into the magnetic tape station record or send into computing machine through charge amplifier, in conjunction with the dynamic transmission characteristic of test macro, just can obtain original ground unevenness, effective roughness and the rut unevenness on soft road surface by analysis.It is the vibration of the vehicle that travels on the soft road surface of research, intensity and fatigue problem, and wheel, in the face of the infrastructure device of soft road surface effective roughness influence.Have great importance for the effective excitation in the ground of choose reasonable surface car.
Description
The present invention relates to a kind of measurer for soft road surface unevenness, is to measure simultaneously by three testing wheels, and the principle realization that the road wheel vibration does not exert an influence to test signal on the testing wheel is measured.
The existing surface irregularity measurement mechanism relevant with this programme, it is the sectional track shape measuring device of the Japanese wooden Bao Chang more of Zhi Pu Electric Co., Ltd invention, it adopts measuring wheel to measure ground and vehicle frame relative displacement, and as basis displacement above-mentioned relative displacement correction being obtained road pavement form by the displacement that is converted to the acceleration that records on the bearing wheel of front and back, it can not be used for soft road surface effective roughness and measure.
The objective of the invention is to provide a kind of original ground surface, soft road surface unevenness that can be used for measuring simultaneously, effective roughness and car are removed the proving installation of unevenness, to study without the relation between the three under ground, the wheel condition, for rationally choosing of ground excitation in the vibration research of the vehicle that travels on the soft road surface provides foundation, and then in the ground unevenness power spectrum expression formula of the unsteadiness of wheels that research is travelled on the soft road surface, introduce ground parameter (as consolidation etc.), be the vibration of vehicle, fatigue and driving comfort research provide basic certificate.
In order to realize above-mentioned purpose of the present invention, can be by the following technical solutions:
The invention provides a kind of soft road roughness proving installation of forming by the mechanism for testing that testing tool is housed, its special character is that mechanism for testing mainly is by put on the shelf (3), side arm (4), testing jig (5), road wheel (10), testing wheel (6), (7), (8) and on acceleration transducer (9) form, test carriage (1) connects by towbar (2) with side arm (4) on the mechanism for testing, put on the shelf and adopt between (3) front end and the side arm (4) in relative rotation that axle one cover connects, side arm (4) is equipped with road wheel (10) by leaf spring (11) down, put on the shelf the rear end of (3) connects with following testing jig (5) by leaf spring (11), three testing wheels of vertically arranging (6) are housed under the testing jig (5), (7), (8), testing wheel (7) and (6), (8) adopt d-axis (12) and parallelogram lever (16) to connect respectively with testing jig (5), acceleration transducer (9) is contained on three test wheel shafts, between test wheel shaft and the test wheel hub bearing is housed.
More than said testing jig (5) can form by the groove welded steel plate, pilot sleeve (13) is housed on it, the d-axis (12) on the testing wheel (7) is contained in the pilot sleeve (13), and can be free to slide along it.
More than said d-axis (12) can be milled with a plane of orientation in its one, and with pilot sleeve (13) in locating piece (17) match, locating piece (17) in this cooperation place upward and on the inwall of pilot sleeve (13) is slotted, and rolling steel balls (18) is housed in it.
More than said d-axis (12) can be provided with screw thread in its underpart, ring flange is housed on the screw thread, on the d-axis (12) between testing jig (5) and the ring flange, spring is housed, d-axis (12) lower end is testing wheel crotch (15).
More than said putting on the shelf (3) go up to place heavily should satisfy ρ
2 y=ab(ρ, expression tester put on the shelf (3) and side arm (4) with respect to the radius of gyration of crossing barycenter y axle, a, b are respectively the distance of the forward and backward leaf spring dotted line of barycenter distance).
Below in conjunction with accompanying drawing the present invention is described in further detail.
Provided structural representation of the present invention among Fig. 1, the technical scheme of this invention mainly is made up of the haulage gear that testing tool is housed and mechanism for testing two parts, the frame of the tractor (1) in the requirement mechanism for testing is sailed the chamber should have enough space placement testing tools, the present invention recommends to adopt tractor, and towbar (2) adopts common tractor-drawn bar; The framework that (3) and side arm (4) can adopt shaped steel to be welded into of putting on the shelf, put on the shelf and can place counterweight on (3) to change the load on the testing wheel (7), put on the shelf between (3) and the side arm (4) and to adopt relatively turnable axle one nested structure to connect, side arm (4) and road wheel (10) partly can rotate relative to the back other parts when guaranteeing that tester turns to.Testing jig (5) can be welded by channel-section steel and steel plate, and the pilot sleeve of testing wheel is mounted thereto, and parallelogram frame one end of testing wheel (6), (8) is fixed on the testing jig (5), and three testing wheels are arranged along working direction one line.Because testing wheel (6) very light in weight, and owing to adopt the parallelogram frame to connect with testing jig (5), so testing jig (5) freely moves up and down relatively, thereby can be similar to and think that it does not change face of land shape, the result of measurement is an original ground surface one-tenth unevenness.Testing wheel (7) bears the load that put on the shelf (3) pass over, interaction in order to tire and ground under the simulation actual condition, the load that (3) biography of putting on the shelf is come is added on the testing wheel (7) testing jig (5) vertical movement relatively of the d-axis (12) of testing wheel (7) by spring (14).Testing wheel (7) is in order to measure the effective roughness that is reflected in wheel and the ground interaction process.Testing wheel (8) is very light, can freely move up and down with respect to testing jig (5) equally with testing wheel (6), can think that it does not change face of land shape, in order to measure rut (being that testing wheel (7) is pressed rut later) unevenness.Because three testing wheels (6), (7), (8) one lines are vertically arranged, so when measurement, three testing wheels are being walked with route is up.Because the waveform medium and low frequency of soft Uneven road partly occupies the majority, so acceleration transducer can adopt low-frequency acceleration sensor.Two road wheels (10) split two surveys of tester front end, the lateral stability of tester during with the assurance test.
Fig. 2, Fig. 3, Fig. 4 are the part of detecting structural representation, d-axis (12) top on the testing wheel (7) is milled with a plane of orientation, it cooperates with locating piece (17) in the pilot sleeve, testing wheel (7) straight line moving during with the assurance test, screw thread is arranged at d-axis (12) bottom, be set with spring (14) on it, adjust testing jig and tester (3) rear end height of putting on the shelf by the ring flange on the d-axis (12) and spring (14).Testing wheel crotch (15) (can adopt steel plate to be welded) is equipped with in d-axis (12) lower end, can adopt U-bolts to be fixedly connected between it and the testing wheel (7).Be provided with bearing in test wheel shaft and test between the wheel hub, testing wheel (7) rolls and tests wheel shaft and do not change when guaranteeing test.Testing wheel (6), (8) with testing jig (5) between about connect with parallelogram lever (16) respectively, one of parallelogram lever (16) two vertical member and testing jig (5) fixing (can weld thereon), another root can be contained in by the screw of centre on the test wheel shaft, one of parallelogram lever (16) two vertical member and testing jig (5) fixing (can weld thereon), another root can be contained in by the screw of centre on the test wheel shaft, hinge joint allows testing wheel (6) between each rod member of parallelogram lever (16), (8) freely move up and down, but swing when not allowing to travel.Three acceleration transducers (9) are positioned on three test wheel shafts, guarantee vertical the installation during installation.
For the d-axis (12) that guarantees test axle (7) better reduces friction along vertical slip of its inwall in pilot sleeve (13), can on the inwall of pilot sleeve (13) and with the locating piece (17) of d-axis (12) cooperation place, plane, go up fluting, rolling steel balls is housed in it.
Fig. 5 is the test macro synoptic diagram, and the signal that three accelerometers record is recorded in the magnetic tape station (20) through charge amplifier (19), and (22) be data processor, and (21) be power supply, and data can be used as " online " processing, also can do " off-line " processing.
Fig. 6 is a tester mechanical model synoptic diagram.With ρ
yThe expression tester put on the shelf and side arm part with respect to the radius of gyration of crossing barycenter y axle, a, b are respectively the distance of barycenter apart from forward and backward leaf spring dotted line, when ρ is satisfied in the configuration of tester weight
2 yDuring=ab, the vibration of the wheel that travels can not influence the test signal on the back end test wheel.
The present invention has the following advantages:
Compared with prior art, the present invention can measure the original ground surface unevenness simultaneously, effective roughness and rut unevenness, testing wheel (6) load only is the testing wheel deadweight, compare very little with testing wheel (7), can be similar to and think that testing wheel (6) does not change face of land shape, what promptly record is the original ground surface unevenness; Testing wheel (7) is used to simulate actual wheel, and its load can be changed the effective roughness that reflects for wheel-ground interaction that testing wheel (7) records by the counterweight on put on the shelf (3); Testing wheel (8) load only for deadweight, is compared very for a short time with testing wheel (7), can be similar to and think that it does not change ground shape since its walking in the rut that the test wheel load is crossed, can think that it records be the rut unevenness.
The present invention guarantees to satisfy ρ in the testing wheel structural design from design
2 yThe vibration of=ab road wheel can not influence test result.This improves the tester lateral stability and does not influence measurement result with regard to making testing wheel that two road wheels can be installed under these conditions.
Connect the vertical direction relative motion with parallelogram between testing wheel among the present invention (6) and testing wheel (8) and the testing jig (5), make between three testing wheels separate, be independent of each other, and make and to measure the original ground surface unevenness simultaneously, effective roughness and rut unevenness become possibility.
Description of drawings:
Fig. 1 is soft road roughness proving installation structural representation;
Fig. 2 is the part of detecting structural representation;
Fig. 3 is a pilot sleeve modular construction synoptic diagram;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the test macro synoptic diagram;
Fig. 6 is a proving installation mechanical model synoptic diagram;
(1) tractor among the figure, (2) towbar, put on the shelf (3), (4) side arm, (5) testing jig, (6), (7), (8) testing wheel, (9) acceleration transducer, (10) road wheel, (11) leaf spring, (12) d-axis, (13) pilot sleeve, (14) spring, (15) testing wheel crotch, (16) parallelogram lever, (17) locating piece, (18) rolling steel balls, (19) charge amplifier, (20) magnetic tape recorder, (21) power supply, (22) data processor.
Eight, embodiment
As enforcement special case of the present invention, the present invention adopts Changchun-40 tractor as test carriage, towbar (2) is welded into No. 4 channel-section steels with reference to common tractor-drawn bar, put on the shelf (3) and side arm (4) adopts No. 8 channel-section steels and 4 bugle steel to be welded into, testing jig (5) is welded into No. 10 channel-section steels and sheet steel, testing wheel (6), (8) be suitable for permanent 28 cun bicycle tyres, to alleviate testing wheel weight, testing wheel (7) is suitable for BJ-212 jeep off-the-highway tire 6.50-16, acceleration transducer selects for use north to carry the YD-82 piezoelectric type low-frequency acceleration sensor that river radio factory produces, road wheel (10) is suitable for BJ-212 jeep off-the-highway tire 6.50-16, leaf spring (11) is selected BJ-212 jeep leaf spring for use, volute spring is the common cylinder spring, and its parameter is steel wire diameter d=14mm, middle footpath D
2=92mm, number of active coils n=12, free height H
0=400mm.Rolling steel balls (18) is selected φ 6mm bicycle use steel ball for use, and charge amplifier (19) selects for use north to carry the DHF-10 charge amplifier that river radio factory produces, and magnetic tape station (20) is selected the little wild TEAC of Co., Ltd. magnetic tape station of Japan for use.
Claims (5)
1, a kind of soft road roughness proving installation of forming by test carriage that testing tool is housed and mechanism for testing, it is characterized in that mechanism for testing mainly is by put on the shelf (3), side arm (4), testing jig (5), road wheel (10), testing wheel (6), (7), (8) and on acceleration transducer (9) form, test carriage (1) connects by towbar (2) with side arm (4) on the mechanism for testing, put on the shelf and adopt between (3) front end and the side arm (4) in relative rotation that axle-cover connects, side arm (4) is equipped with road wheel (10) by leaf spring (11) down, put on the shelf the rear end of (3) connects with following testing jig (5) by leaf spring (11), put on the shelf to be placed with on (3) and can change the counterweight that testing wheel (7) is gone up load, three testing wheels of vertically arranging (6) are housed under the testing jig (5), (7), (8), testing wheel (7) and (6), (8) adopt d-axis (12) and parallelogram lever (16) to connect respectively with testing jig (5), acceleration transducer (9) is contained on three test wheel shafts, between test wheel shaft and the test wheel hub bearing is housed.
2, a kind of soft road roughness proving installation of forming by test carriage that testing tool is housed and mechanism for testing according to claim 1, it is characterized in that said testing jig (5) is to be formed by channel-section steel and welded steel plate, pilot sleeve (13) is housed on it, d-axis (12) on the testing wheel (7) is contained in the pilot sleeve (13), and can be free to slide along it.
3, a kind of soft road roughness proving installation of forming by test carriage that testing tool is housed and mechanism for testing according to claim 1 and 2, the top that it is characterized in that said d-axis (12) is milled with a plane of orientation, and with pilot sleeve (13) in locating piece (17) match, locating piece (17) in the cooperation place upward and on the inwall of pilot sleeve (13) is slotted, and rolling steel balls (13) is housed in it.
4, according to claim 1 or 3 described a kind of soft road roughness proving installations of forming by test carriage that testing tool is housed and mechanism for testing, it is characterized in that screw thread is arranged at said d-axis (12) bottom, ring flange is housed on the screw thread, on the d-axis (12) between testing jig (5) and the ring flange spring is housed, d-axis (12) lower end is testing wheel crotch (15).
5, a kind of soft road roughness proving installation of being made up of test carriage that testing tool is housed and mechanism for testing according to claim 1, put on the shelf (3) that it is characterized in that are gone up the counterweight of placing and should be satisfied ρ
2 y=ab(ρ
yPut on the shelf (3) relative radius of gyration of crossing barycenter y axle with side arm (4) is tested in expression, and a, b are respectively the distance of barycenter apart from forward and backward leaf spring dotted line).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90100604A CN1019854B (en) | 1990-02-06 | 1990-02-06 | Measurer for soft road surface unevenness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90100604A CN1019854B (en) | 1990-02-06 | 1990-02-06 | Measurer for soft road surface unevenness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1053954A true CN1053954A (en) | 1991-08-21 |
| CN1019854B CN1019854B (en) | 1992-12-30 |
Family
ID=4876724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90100604A Expired CN1019854B (en) | 1990-02-06 | 1990-02-06 | Measurer for soft road surface unevenness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019854B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853805A (en) * | 2012-03-21 | 2013-01-02 | 包头联方高新技术有限责任公司 | Flatness detection device for secondary induction plate of linear motor of tube rail transportation system |
| CN104266849A (en) * | 2014-10-23 | 2015-01-07 | 山东理工大学 | Test device and analysis method for damping of vehicle tire |
| CN104949649A (en) * | 2015-05-26 | 2015-09-30 | 山东交通学院 | Road surface irregularity measuring device |
| CN105473983A (en) * | 2014-06-09 | 2016-04-06 | 尼拉动力公司 | Detection of short term irregularities in a road surface |
| CN106352818A (en) * | 2016-09-22 | 2017-01-25 | 内蒙古农业大学 | Soft farmland ground unevenness testing device |
| CN109373876A (en) * | 2018-10-25 | 2019-02-22 | 浙江润达检测科技有限公司 | A kind of evenness of road surface detection device |
| CN109837825A (en) * | 2019-03-31 | 2019-06-04 | 王信青 | A kind of laying road surface reparation method and device |
| WO2023193970A1 (en) | 2022-04-08 | 2023-10-12 | Weber-Hydraulik Gmbh | Cylinder/piston assembly with eccentric piston rod |
-
1990
- 1990-02-06 CN CN90100604A patent/CN1019854B/en not_active Expired
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853805A (en) * | 2012-03-21 | 2013-01-02 | 包头联方高新技术有限责任公司 | Flatness detection device for secondary induction plate of linear motor of tube rail transportation system |
| CN105473983B (en) * | 2014-06-09 | 2020-05-12 | 尼拉动力公司 | Detection of short-term irregularities on a road surface |
| CN105473983A (en) * | 2014-06-09 | 2016-04-06 | 尼拉动力公司 | Detection of short term irregularities in a road surface |
| CN104266849B (en) * | 2014-10-23 | 2017-10-17 | 山东理工大学 | A kind of vehicle tyre damping test device and analysis method |
| CN104266849A (en) * | 2014-10-23 | 2015-01-07 | 山东理工大学 | Test device and analysis method for damping of vehicle tire |
| CN104949649B (en) * | 2015-05-26 | 2018-08-17 | 山东交通学院 | Road surface non-planeness measurement device |
| CN104949649A (en) * | 2015-05-26 | 2015-09-30 | 山东交通学院 | Road surface irregularity measuring device |
| CN106352818A (en) * | 2016-09-22 | 2017-01-25 | 内蒙古农业大学 | Soft farmland ground unevenness testing device |
| CN106352818B (en) * | 2016-09-22 | 2019-02-19 | 内蒙古农业大学 | The soft random road roughness test device in farmland |
| CN109373876A (en) * | 2018-10-25 | 2019-02-22 | 浙江润达检测科技有限公司 | A kind of evenness of road surface detection device |
| CN109373876B (en) * | 2018-10-25 | 2021-07-09 | 浙江润达检测科技有限公司 | Road surface flatness detection device |
| CN109837825A (en) * | 2019-03-31 | 2019-06-04 | 王信青 | A kind of laying road surface reparation method and device |
| CN109837825B (en) * | 2019-03-31 | 2021-05-18 | 广东省佛山公路集团有限公司 | Method and device for detecting quality of paved road surface |
| WO2023193970A1 (en) | 2022-04-08 | 2023-10-12 | Weber-Hydraulik Gmbh | Cylinder/piston assembly with eccentric piston rod |
| DE102022108652A1 (en) | 2022-04-08 | 2023-10-12 | Weber-Hydraulik Gmbh | Cylinder/piston unit with eccentric piston rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1019854B (en) | 1992-12-30 |
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