CN104390892A - Tester and method for testing soft particles in coarse aggregate - Google Patents
Tester and method for testing soft particles in coarse aggregate Download PDFInfo
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- CN104390892A CN104390892A CN201410665532.7A CN201410665532A CN104390892A CN 104390892 A CN104390892 A CN 104390892A CN 201410665532 A CN201410665532 A CN 201410665532A CN 104390892 A CN104390892 A CN 104390892A
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Abstract
The invention discloses a tester for testing soft particles in coarse aggregate. The tester comprises a tester body; the tester body comprises a base, and support stand columns which are vertically and symmetrically arranged on the base; a fixed cross rod is horizontally arranged on the tops of the support stand columns; a sliding cross rod is horizontally arranged on the support stand columns under the fixed cross rod; an upper press plate is fixed on the sliding cross rod by a bracket; an internal thread guide block is arranged at the central position of the sliding cross rod; a screw rod matched with the internal thread guide block is driven by a power source arranged on the fixed cross rod, and the sliding cross rod is driven to move up and down along the support stand columns; a bearing platform provided with a pressure sensor is arranged on the base under the upper press plate. The tester has the advantages that the tester is simple in structure, convenient in measurement and accurate in results, and can be used as a standard device for detecting the item.
Description
Technical field
The present invention relates to soft particle test instrument, especially relate to a kind of coarse aggregate soft particle test instrument, the invention still further relates to the method using this test instrument to measure soft particle.
Background technology
For ensureing the quality requirements of hydraulic engineering, in its project construction process, the experiment of coarse aggregate soft particle is one of test item that must do.Be exactly soft particle test instrument for measuring the equipment of soft grain in aggregate in rubble, gravel and crushing gravel.The domestic detection to Coarse Aggregate soft particle does not at present have unified equipment, be broadly divided into hand experimental facilities and electrodynamic type experimental facilities, hand testing equipment not only inconvenient operation and efficiency is very low, and electric loading system formula testing equipment volume is comparatively large, and price again costly.When reality detects, no matter manually or the pressuring method of electrokinetic tests instrument all comparatively extensive, at the uniform velocity can not pressurize by stepping, the precision of testing result is short of to some extent.
Summary of the invention
The object of the present invention is to provide that a kind of structure simply, is at the uniform velocity pressurizeed, result coarse aggregate soft particle test instrument accurately, the present invention also provides and uses this test instrument to measure the method for soft particle.
For achieving the above object, the present invention can take following technical proposals:
Coarse aggregate soft particle test instrument of the present invention, comprise test instrument body, described test instrument body comprises base and vertical symmetry and is arranged on support post on described base, the top level of described support post is provided with fixed transverse rod, support post below described fixed transverse rod is horizontally disposed with slip cross bar, top board is fixed on described slip cross bar by support, and described slip cross bar center position is provided with internal thread orienting lug; The screw matched with described internal thread orienting lug is driven by the power source be arranged on described fixed transverse rod, drives described slip cross bar to move up and down along described support post; Be positioned at the bearing platform base below top board is provided with pressure transducer.
Described power source is the turning handle being arranged on described screw upper end.
Described power source is the slowspeed machine be arranged on fixed transverse rod, and described slowspeed machine is meshed with described screw by driving gear set.
Work efficiency is measured for improving it, described test instrument body is provided with the automatic feeder of sample: it comprises the sample shaft collar of ring set on the support post of side, the bottom surface of described sample shaft collar and described bearing platform upper surface clearance fit, the stepper motor be arranged on described base drives described sample shaft collar to rotate by driving gear set; Described sample shaft collar is cirque structure, and in its annular disk surfaces, equilibrium offers sample fixed via.
Described bearing platform is placed with sample bench.
The method using test instrument of the present invention to measure coarse aggregate soft particle is: be first placed on bearing platform by particulate material sample to be determined, power source rotates screw and at the uniform velocity rotates in internal thread orienting lug, slip cross bar is driven to move down along described support post, top board evenly declines and presses particulate material sample, when reaching the force value of pressure transducer setting, stops exerting pressure, counter-rotation screw, top board is lifted, takes out particulate material sample, observe sample and whether break; After this batch of particulate material Specimen Determination is complete, collect uncracked particulate material sample experiment with computing data.
The invention has the advantages that structure is simple, it is convenient to measure, and result is accurate, can be used as the standard device detecting this project and uses.Adopt screw to drive top board to be at the uniform velocity forced into authorised pressure value during mensuration, avoid the phenomenon adopting pressure lever type pressurization to occur impulsive force; Must drive when exerting pressure with top board simultaneously and compare with the mensuration mode of friction sample, relative motion when avoiding Specimen Determination, makes measurement result more accurate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, coarse aggregate soft particle test instrument of the present invention, comprise test instrument body, this test instrument body comprises base 1 and vertical symmetry and is arranged on support post 2 on base 1, the top level of support post 2 is provided with fixed transverse rod 3, support post below fixed transverse rod 3 has been horizontally disposed with slip cross bar 4, top board 5 is fixed on slip cross bar 4 by support 6, and slip cross bar 4 center position is provided with internal thread orienting lug 7; The screw 8 matched with internal thread orienting lug 7 is driven by the power source be arranged on fixed transverse rod 3, drives slip cross bar 4 to move up and down along support post 2; Be positioned at the bearing platform 9 base 1 below top board 5 is provided with pressure transducer, bearing platform 9 is placed with sample bench 15, and the signal output part of pressure transducer is electrically connected with the signal input part of test instrument controller 17.
During manual operation, the power source driving screw 8 to rotate is the turning handle 10 being arranged on screw upper end; During electric operating, power source is the slowspeed machine 11 be arranged on fixed transverse rod 3, and slowspeed machine 11 is meshed with screw 8 by driving gear set.
For improving detection efficiency, test instrument body is provided with the automatic feeder of sample: this device comprises the sample shaft collar 12 of ring set on side support post 2, the bottom surface of sample shaft collar 12 and bearing platform 9 upper surface clearance fit are (if bearing platform 9 places sample bench 15, the then bottom surface of sample shaft collar 12 and then sample bench 15 upper surface clearance fit), the stepper motor 13 be arranged on base 1 drives sample shaft collar 12 to rotate by driving gear set.Sample shaft collar 12 is cirque structure, and in its annular disk surfaces, equilibrium offers sample fixed via 14.
Improve embodiment below and introduce the method using this test instrument to measure soft particle in detail.
Under full water condition, to the coarse aggregate particle of particle diameter 5 ~ 10mm, 10 ~ 20mm, 20 ~ 40mm, apply the pressure of 0.15KN, 0.25KN, 0.34KN respectively, differentiate whether it is the particle be broken.
First particulate material sample 16 to be determined is placed on sample bench 15, selects manually behaviour/electric operating mode.
During manual operation, press the reset key of controller 17, the display zero of controller 17, then testing crew holds turning handle 10, uniform rotation screw 8, top board 5 is evenly declined and presses particulate material sample 16, pressure transducer pressurized on bearing platform 9, force value is sent to controller 17, when display display force value reaches setting value, stopping is exerted pressure, rotary motion handle 10 in the other direction, top board 5 is lifted, take out sample 16, observe sample whether to break, if damage, abandons it, as intact, collect, proceed the mensuration of next sample.
During electric operating, can according to the particle diameter Selective Pressure force value gear (particle diameter can be divided into 5 ~ 10mm, 10 ~ 20mm, 20 ~ 40mm tri-kinds as samples, and 5 ~ 10mm particle diameter selects 1 grade, and 10 ~ 20mm particle diameter selects 2 grades, and 20 ~ 40mm particle diameter selects 3 grades) of institute's test specimens.Equally, first press the reset key of controller 17, the display zero of controller 17, then press start key, slowspeed machine 11 starts, and top board 5 presses sample 16 downwards, and stop after reaching set pressure, original position is returned in reverse rotation, continues next Specimen Determination.
When sample has all measured, weigh uncracked sample, experiment with computing data.
For increasing work efficiency, test instrument body of the present invention can also be arranged the automatic feeder of sample, by this automatic feeder (stepper motor 13 drives sample shaft collar 12 to rotate by driving gear set), sample 16 is sent on sample bench 15 successively, only sample need be taken off after pressing.
Advantage of the present invention may be embodied in following some:
1, at the uniform velocity pressurize, without impulsive force;
Screw 8 is adopted to drive increased pressure board 5 lifting moving, can uniform load to authorised pressure value, avoiding market upper part adopts pressure lever type pressurization to occur the phenomenon of impulsive force, driving and comparing with friction sample, avoiding friction force and the relative motion of specimen surface with market top board when exerting pressure.
2, sensing is accurate, numerical monitor, and reading is directly perceived;
High-precision weighing sensor selected by pressure transducer, and dynamometry is accurate, is quick on the draw, and display uses multidigit nixie tube display, and clear data easily reads.
3, automatically exert pressure, stepping operates;
During automatic on-load pressure, have multiple (general setting three can meet the demands) gear to select, according to sample particle size, after selecting gear, test instrument is automatically loaded on relevant pressure and tests, convenient and swift.
4, diverse in function, small volume and less weight;
Can manual pressure, Self-pressurizing agri, one-piece construction is small and exquisite, lighter in weight, conveniently moving, and using function is various.
5, intelligence degree is high, saves human resources
To pressurize with market relying on manual lead screw or compared with depression bar pressurizes, intelligence degree improves, and without labor intensive resource, work efficiency is improved.
Claims (7)
1. a coarse aggregate soft particle test instrument, comprise test instrument body, it is characterized in that: described test instrument body comprises base and vertical symmetry and is arranged on support post on described base, the top level of described support post is provided with fixed transverse rod, support post below described fixed transverse rod is horizontally disposed with slip cross bar, top board is fixed on described slip cross bar by support, and described slip cross bar center position is provided with internal thread orienting lug; The screw matched with described internal thread orienting lug is driven by the power source be arranged on described fixed transverse rod, drives described slip cross bar to move up and down along described support post; Be positioned at the bearing platform base below top board is provided with pressure transducer.
2. coarse aggregate soft particle test instrument according to claim 1, is characterized in that: described power source is the turning handle being arranged on described screw upper end.
3. coarse aggregate soft particle test instrument according to claim 1, is characterized in that: described power source is the slowspeed machine be arranged on fixed transverse rod, and described slowspeed machine is meshed with described screw by driving gear set.
4. coarse aggregate soft particle test instrument according to claim 1, it is characterized in that: described test instrument body is provided with the automatic feeder of sample: comprise the sample shaft collar of ring set on the support post of side, the bottom surface of described sample shaft collar and described bearing platform upper surface clearance fit, the stepper motor be arranged on described base drives described sample shaft collar to rotate by driving gear set.
5. coarse aggregate soft particle test instrument according to claim 4, it is characterized in that: described sample shaft collar is cirque structure, in its annular disk surfaces, equilibrium offers sample fixed via.
6. the coarse aggregate soft particle test instrument according to any one of claim 1-4, is characterized in that: described bearing platform is placed with sample bench.
7. use the test instrument described in claim 1 to measure the method for coarse aggregate soft particle, it is characterized in that: first particulate material sample to be determined is placed on bearing platform, power source rotates screw and at the uniform velocity rotates in internal thread orienting lug, slip cross bar is driven to move down along described support post, top board evenly declines and presses particulate material sample, when reaching the force value of pressure transducer setting, stopping is exerted pressure, counter-rotation screw, top board is lifted, take out particulate material sample, observe sample and whether break; After this batch of particulate material Specimen Determination is complete, collect uncracked particulate material sample experiment with computing data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665532.7A CN104390892A (en) | 2014-11-19 | 2014-11-19 | Tester and method for testing soft particles in coarse aggregate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665532.7A CN104390892A (en) | 2014-11-19 | 2014-11-19 | Tester and method for testing soft particles in coarse aggregate |
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| CN104390892A true CN104390892A (en) | 2015-03-04 |
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| CN201410665532.7A Pending CN104390892A (en) | 2014-11-19 | 2014-11-19 | Tester and method for testing soft particles in coarse aggregate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444853A (en) * | 2018-06-21 | 2018-08-24 | 磐石油压工业(安徽)有限公司 | A kind of performance detection apparatus of vehicle air spring-rubber body |
| CN109870374A (en) * | 2019-01-23 | 2019-06-11 | 北京理工大学 | Explosion wave loading device |
| CN110455621A (en) * | 2019-08-06 | 2019-11-15 | 深圳市市政工程总公司 | The compressive strength test method of the building castoff mixture of stabilized with inorganic binder |
| CN111111827A (en) * | 2019-12-30 | 2020-05-08 | 彩虹显示器件股份有限公司 | Preparation device and method of uniform sample |
| CN113865972A (en) * | 2021-10-13 | 2021-12-31 | 西安石油大学 | Outdoor combined rock mechanical property analysis device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444853A (en) * | 2018-06-21 | 2018-08-24 | 磐石油压工业(安徽)有限公司 | A kind of performance detection apparatus of vehicle air spring-rubber body |
| CN109870374A (en) * | 2019-01-23 | 2019-06-11 | 北京理工大学 | Explosion wave loading device |
| CN110455621A (en) * | 2019-08-06 | 2019-11-15 | 深圳市市政工程总公司 | The compressive strength test method of the building castoff mixture of stabilized with inorganic binder |
| CN111111827A (en) * | 2019-12-30 | 2020-05-08 | 彩虹显示器件股份有限公司 | Preparation device and method of uniform sample |
| CN111111827B (en) * | 2019-12-30 | 2023-08-11 | 彩虹显示器件股份有限公司 | Device and method for preparing uniform sample |
| CN113865972A (en) * | 2021-10-13 | 2021-12-31 | 西安石油大学 | Outdoor combined rock mechanical property analysis device |
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Application publication date: 20150304 |