CN102759493A - Frequency modulation type surface vibratory compaction test instrument - Google Patents
Frequency modulation type surface vibratory compaction test instrument Download PDFInfo
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- CN102759493A CN102759493A CN2012101167169A CN201210116716A CN102759493A CN 102759493 A CN102759493 A CN 102759493A CN 2012101167169 A CN2012101167169 A CN 2012101167169A CN 201210116716 A CN201210116716 A CN 201210116716A CN 102759493 A CN102759493 A CN 102759493A
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- grained soil
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Abstract
The invention provides a frequency modulation type surface vibratory compaction test instrument used for determining the maximum dry density of coarse grained soil. The frequency modulation type surface vibratory compaction test instrument comprises a main body bench, a vibrating system of the main body bench, a loading system, a lifting system, an electrical apparatus control system, a sample loading container, and the like, wherein the main body bench comprises a bottom plate and a counter-force framework; the vibrating system uses two vertical connecting pillars of the counter-force framework as guide pillars moving up and down; the loading system is arranged below the vibrating system and connected with the vibrating system; the lifting system is arranged on a cross beam at the upper part of the counter-force framework and capable of lifting or lowering the loading system by adopting an electric hoist; the electrical apparatus control system is used for regulating electromechanical and frequency modulation control of the whole instrument through a button, a limit switch and a vibration frequency setter; and the height of the sample loading container, which is basically the same as the diameter size of the sample loading container, has multiple choices according to the difference of particle sizes of the largest particles in samples, and the diameter size of the sample loading container can mainly be 150mm, 300mm and 500mm. The frequency modulation type surface vibratory compaction test instrument is simple to operate and can rapidly and effectively determine dry density indexes of the samples when coarse grained soil with different grading features applies different exciting forces under the best vibration frequency.
Description
Technical field:
The present invention relates to a kind ofly in soil test, measure the dry density index device of coarse-grained soil.Relate in particular to maximum dry density index testing device with different gradation characteristic coarse-grained soil coarse-grained soil under different vibrating compacting frequencies and different exciting forces.
Background technology:
Along with improving constantly to the cognitive level of civil engineering work filling material; The fineness of compact technique is increasingly high; The reliability that civil engineering material is detected and method of testing and instrument and equipment are had higher requirement fast and accurately; This promoted the traditional experiment technology development and progress, especially boosting developing rapidly of soil test technique level and instrument and equipment.The method of traditional test coarse-grained soil maximum dry density adopts hammering method, shaking table method, on-site rolling test method(s) etc. more; Its common feature is that compacting function deficiency or test accuracy are lower; And adopt frequency modulation type surface vibration compactor exactly greatly to improve the deficiency of above-mentioned test method in the past; The perfect function of instrument has improved test efficiency.This test method is to be accompanied by the development of electrical equipment control technology and to produce.
Summary of the invention
The present invention is directed to the deficiency that in traditional soil test coarse-grained soil maximum dry density test apparatus is existed, and a kind of testing tool to coarse-grained soil maximum dry density value of invention.It can measure the rate of specific gravity of coarse-grained soil simply, accurately.
The frequency modulation type surface vibration compactor of first technical scheme according to the present invention is made up of main body stand and vibrational system thereof, loading system, loading jacking system, electrical apparatus control system, dress appearance container etc.Said main body stand is to be made up of base plate and reaction frame.As the guidepost that moves up and down, loading system is connected below vibrational system and with it vibrational system with two vertical pillars of reaction frame, loads jacking system and places the reaction frame upper beam and adopt electric block that loading system is promoted or fall.Electrical apparatus control system is adjusted electromechanics and the frequency modulation control and the compacting vibration duration of whole instrument through button and limit switch and vibration frequency setting apparatus.The height and the diameter dimension of dress appearance container are basic identical, according to the difference of the largest particles particle diameter in the sample multiple choices are arranged, and its main diameter dimension is respectively 150mm, 300mm and 500mm.This instrumentation is simple, can measure the dry density index with different gradation characteristic coarse-grained soil sample when under optimum vibration frequency, applying different exciting force quickly and efficiently.
Adopt good effect of the present invention to be: it is different and can't adjust in test the problem of setting to the optimum vibration frequency that coarse-grained soil had with different gradation characteristic that it has successfully solved traditional vibrating compacting appearance, and the present invention can be provided with any frequency values at any time.Therefore, it can obtain dry density test result more accurately.This device integration is good, and simple to operation, quick, reliable.
Description of drawings
Fig. 1 is the vibrational system and the loading system structural representation of instrument of the present invention
Fig. 2 is the main body horse structure synoptic diagram of instrument of the present invention
The practical implementation method
Sample is loaded the people slowly try tube 13, floating specimen surface.To try tube and be fixed on the base plate 14, load onto sleeve 12, and closely fixing with examination tube 13.Load 6 on request, open electric block 8 and put down Vib. 1,2,3,4,5,6,7,11, adjust exciting force and vibration frequency, get the clean aliquot part of sufficient amount, in the examination tube 13 of packing into, floating surface.Energising 2 opens vibrating motor 10 vibration 6min.1 Vib. 1,2,3,4,5,6,7,11 of slinging.Carry out the second layer, the 3rd layer of sample vibrating compacting as stated above.Shed sleeve 12.Straight steel bar is put on the examination tube diametrical position, measures the complete specimen height of shaking.Reading should be distributed in specimen surface from four and record and be accurate to 0.5mm apart from the position of barrel 15mm at least, and record also calculates specimen height.Unload examination tube 13, measure and record examination tube 13 and sample mass.Deduction examination tube quality is sample mass.Calculate the maximum dry density value.Repeat abovementioned steps, until obtaining consistent maximum dry density.But must prepare enough representative test portions, must not repetitive vibrations compacting individual sample.
When utilizing frequency modulation type surface vibration compactor of the present invention that the maximum dry density of coarse-grained soil is tested, at first should this instrument steadily be seated on the firm basal plane.The junctor electric control system, and check errorless back energized 2,8.Confirm and configuration carrying capacity 6 fixing and locking 5.Set vibration frequency and time of vibration.The electric block of opening on the crossbeam 98 promotes loading system 6, gets the clean aliquot part of sufficient amount then, the examination tube 13 of packing into, and floating surface also places tamping plate 7 belows.Fall the vibration 3 and 6 systems of loading, energising 2 opens vibrational system 3 and carries out vibrating compacting.Behind the time of vibration that reaches setting, stop vibration automatically.Volume of sample behind the measuring vibrations.Unload examination tube 13, measure and record examination tube 13 and sample mass.Deduction examination tube quality is sample mass.Calculate the maximum dry density value.
Claims (10)
1. the maximum dry density test determination instrument of a coarse-grained soil is made up of main body stand and vibrational system thereof, loading system, jacking system, electrical apparatus control system, dress appearance container etc.Said main body stand is to be made up of base plate and reaction frame.Vibrational system be two vertical pillars with reaction frame as the guidepost that moves up and down, loading system is connected below vibrational system and with it, jacking system places the reaction frame upper beam and adopts electric block that loading system is promoted or fall.Electrical apparatus control system is adjusted the electromechanics and the frequency modulation control of whole instrument through button and limit switch and vibration frequency setting apparatus.The height and the diameter dimension of dress appearance container are basic identical, according to the difference of the largest particles particle diameter in the sample multiple choices can be arranged, and its main diameter dimension is respectively 150mm, 300mm and 500mm.
2. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 1 is characterized in that, this instrument can be provided with optimum vibration frequency and vibrating compacting duration according to the grating characteristic adjustment of earth material.
3. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 1; It is characterized in that; The vibrational system of aforementioned body portion is to connect steel column through punching to connect as one on loading system, and with two vertical pillars of reaction frame as the guidepost that moves up and down.
4. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 1; It is characterized in that the vibrational system in the aforementioned body portion, loading system, jacking system and the spacing control that moves up and down are accomplished by manually-operated electrical apparatus control system.
5. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 4 is characterized in that, the jacking system of aforementioned body portion places the reaction frame upper beam and adopts electric block to vibrate and promotes with loading system or fall.
6. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 4 is characterized in that, the load application in the above-mentioned loading system is to adopt the counterweight that applies different size to realize.
7. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 4 is characterized in that, the exciting force in the above-mentioned vibrational system is to realize earth material is applied different compacting exciting forces through vibrating motor and loading system.
8. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 4 is characterized in that, above-mentioned electric control system can make vibration and loading system at lifting and decline auto stop when reaching capacity the position.
9. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 1 is characterized in that, the size of above-mentioned dress appearance container can change according to testing requirements, and compaction hammer all can be changed with dress appearance container flexibly.
10. the maximum dry density test determination instrument of a kind of coarse-grained soil according to claim 1 is characterized in that, the base plate of the main body stand in the aforementioned body portion is provided with register pin to the dress appearance container of different size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101167169A CN102759493A (en) | 2012-04-20 | 2012-04-20 | Frequency modulation type surface vibratory compaction test instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101167169A CN102759493A (en) | 2012-04-20 | 2012-04-20 | Frequency modulation type surface vibratory compaction test instrument |
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| CN102759493A true CN102759493A (en) | 2012-10-31 |
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| CN2012101167169A Pending CN102759493A (en) | 2012-04-20 | 2012-04-20 | Frequency modulation type surface vibratory compaction test instrument |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197689A (en) * | 2013-03-20 | 2013-07-10 | 中国水利水电第五工程局有限公司 | Electrical control system used for full-automatic pneumatic compaction device and control method thereof |
| CN105973733A (en) * | 2016-07-08 | 2016-09-28 | 商洛市交通运输局 | Detection device, detection method and evaluation method of compaction quality of gravel base |
| CN108103900A (en) * | 2015-11-04 | 2018-06-01 | 姬志刚 | A kind of pavement compaction machinery |
| CN112067500A (en) * | 2020-09-09 | 2020-12-11 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Railway coarse-grained soil filler vibration compaction experimental device and experimental method |
| CN113686727A (en) * | 2021-07-16 | 2021-11-23 | 中北大学 | Variable-pressure internal vibration compaction packing density measurement method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107457A (en) * | 1987-12-10 | 1988-07-27 | 陕西省水利机械厂 | Vibratory compactor |
| CN2526824Y (en) * | 2002-01-10 | 2002-12-18 | 沙爱民 | Vibration shaping compactor for road material |
| CN201302534Y (en) * | 2008-11-19 | 2009-09-02 | 无锡建仪仪器机械有限公司 | Modified vibration compaction apparatus |
-
2012
- 2012-04-20 CN CN2012101167169A patent/CN102759493A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87107457A (en) * | 1987-12-10 | 1988-07-27 | 陕西省水利机械厂 | Vibratory compactor |
| CN2526824Y (en) * | 2002-01-10 | 2002-12-18 | 沙爱民 | Vibration shaping compactor for road material |
| CN201302534Y (en) * | 2008-11-19 | 2009-09-02 | 无锡建仪仪器机械有限公司 | Modified vibration compaction apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国交通部: "公路土工试验规程", 《中华人民共和国行业标准》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197689A (en) * | 2013-03-20 | 2013-07-10 | 中国水利水电第五工程局有限公司 | Electrical control system used for full-automatic pneumatic compaction device and control method thereof |
| CN103197689B (en) * | 2013-03-20 | 2015-05-13 | 中国水利水电第五工程局有限公司 | Electrical control system used for full-automatic pneumatic compaction device and control method thereof |
| CN108103900A (en) * | 2015-11-04 | 2018-06-01 | 姬志刚 | A kind of pavement compaction machinery |
| CN105973733A (en) * | 2016-07-08 | 2016-09-28 | 商洛市交通运输局 | Detection device, detection method and evaluation method of compaction quality of gravel base |
| CN105973733B (en) * | 2016-07-08 | 2019-03-22 | 商洛市交通运输局 | A kind of detection device, detection method and the evaluation method of granular base course compaction quality |
| CN112067500A (en) * | 2020-09-09 | 2020-12-11 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Railway coarse-grained soil filler vibration compaction experimental device and experimental method |
| CN112067500B (en) * | 2020-09-09 | 2022-08-30 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Railway coarse-grained soil filler vibration compaction experimental device and experimental method |
| CN113686727A (en) * | 2021-07-16 | 2021-11-23 | 中北大学 | Variable-pressure internal vibration compaction packing density measurement method |
| CN113686727B (en) * | 2021-07-16 | 2023-10-03 | 中北大学 | Variable pressure internal vibration close packing density measuring method |
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Application publication date: 20121031 |