CN104155212B - A kind of automatic testing apparatus for cement setting time - Google Patents
A kind of automatic testing apparatus for cement setting time Download PDFInfo
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- CN104155212B CN104155212B CN201410425686.9A CN201410425686A CN104155212B CN 104155212 B CN104155212 B CN 104155212B CN 201410425686 A CN201410425686 A CN 201410425686A CN 104155212 B CN104155212 B CN 104155212B
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- test point
- setting time
- sliding bar
- testing apparatus
- automatic testing
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- 238000012360 testing method Methods 0.000 title claims abstract description 91
- 239000004568 cement Substances 0.000 title claims abstract description 43
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000013008 moisture curing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Abstract
The invention discloses a kind of automatic testing apparatus for cement setting time, described analyzer includes support, turntable, crane, sliding bar and sucked type electromagnet；Described turntable and crane are separately mounted on described support；Rotating disk and rotating stepper motor it is provided with on described turntable；Described crane is provided with test point resetting-mechanism, and in test point resetting-mechanism, is provided with test point and displacement transducer；Described sliding bar is arranged on the upper end of described test point, and sliding bar is turned over turnback by described test point resetting-mechanism and realizes test point reset；Described sucked type magnet is arranged on the top of described test point resetting-mechanism, and is fixed by a magnet fixed mount.The equipment that the present invention provides, according to country's testing standard, can imitate manually-operated overall process, easy to operate, measuring accuracy is high.
Description
Technical field
The present invention relates to earthwork test Instrument technical field, particularly relate to a kind of cement setting time and automatically survey
Determine instrument.
Background technology
Setting time is one of leading indicator of cement quality, standard GB175 2007 " common Portland
Cement " in define portland cement presetting period and final setting time.Meanwhile, GB GB/T
The assay method of 1346 2011 cement setting times.Cement setting be use in certain time, test point is
No can sink to what the certain depth of sample in die trial determined.
The mensuration in presetting period: test specimen is carried out for the first time during 30min after maintenance adds water in moisture curing box
Measure.During mensuration, taking out die trial and be put under test point, after test point contacts with cement paste surface, test point hangs down
Directly freely sink to cement paste.If test point stops sinking or discharging test point 30s, test point was sink to the end of away from
During plate 4mm ± 1mm, reach initial set state for cement, repeat said determination, reach initial set to cement
State.It is at the beginning of cement that test specimen maintenance in moisture curing box add water to cement to reach time of initial set state
The solidifying time.
The mensuration of final setting time: after completing presetting period mensuration, test specimen is put in moisture curing box and is supported
Protect, measure once every 15min when closing on the final setting time of regulation, when test point sinks to try body 0.5mm
Time, reach final set state for cement.Test specimen maintenance in moisture curing box adds water to cement and reaches final set shape
The time of state is the final setting time of cement.
Owing to when actual measurement, this value of the 0.5mm of final set state is difficult to accurately observation, therefore in standard
Special provision in GB/T 1,346 2011, in order to accurately observe the situation that sinks to of narrow regions test point, eventually
Measuring of solidifying time uses the special test point equipped with annular attachment, when special test point sinks to try body 0.5mm
Time, at this moment annular attachment can not be left a trace on examination body, that is to say annular attachment do not occur for the last time
Vestige is final set.Specify in a standard simultaneously, after presetting period arrival, overturn die trial immediately, it is therefore an objective to for
Only surface is starched the most smooth, it is possible to accurately attached in observation final set pin (the most special test point) during mensuration final set
Whether part leaves a trace.
Current domestic industry is that (accompanying drawing is shown in by this instrument outward appearance and primary structure to employing hand Vicat apparatus mostly
1, wherein 1 is support, and 2 is sliding bar, and 3 is slack adjuster, and 4 is pointer, and 5 is scale) measure
The setting time of cement.This is a kind of conventional method having more than 100 year history, uses manual operations, often
Every five minutes or 15 minutes operation once, observe test point from cement paste surface freely falling body sink to deep
Degree judges just, final setting time.
From the method for testing of manual Vicat apparatus it can be seen that this method is time-consuming, laborious, each sample is wanted
Mensuration one by one, operating personnel need several hours even tens hours ground to wait, observe final setting time
Arrive.It is additionally, since that the qualification of operating personnel is different from ability also affects the accurate of measurement result
Property.Hence it is imperative that automatic analyzer automatically, precisely measures the setting time of cement.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide one and can imitate the full mistake of manual operation
Journey, and automatic testing apparatus for cement setting time easy to operate, that measuring accuracy is high.
The purpose of the present invention is realized by following technical scheme:
A kind of automatic testing apparatus for cement setting time, this analyzer includes:
Support, turntable, crane, sliding bar and sucked type electromagnet；Described turntable and crane
It is separately mounted on described support；
Rotating disk and rotating stepper motor it is provided with on described turntable；
Described crane is provided with test point resetting-mechanism, and be provided with in test point resetting-mechanism test point and
Displacement transducer；
Described sliding bar is arranged on the upper end of described test point, and sliding bar is overturn by described test point resetting-mechanism
180 degree realize test point and reset；
Described sucked type magnet is arranged on the top of described test point resetting-mechanism, and by a magnet fixed mount
Fixing.
Compared with prior art, one or more embodiments of the invention can have the advantage that
According to country's testing standard, can imitate manually-operated overall process, easy to operate, measuring accuracy is relatively
High.
Accompanying drawing explanation
Fig. 1 is hand Vicat apparatus structural representation of the prior art；
Fig. 2 is automatic testing apparatus for cement setting time structural representation；
Fig. 3 is structural representation during test point reset；
Fig. 4 is the structural representation of test point resetting-mechanism；
Fig. 5 is the structural representation of turntable；
Fig. 6 is the schematic diagram that the present invention uses Automatic Levelling commercial measurement；
Fig. 7 is the test flow chart using the present invention to measure cement setting time.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing
The present invention is described in further detail.
Fig. 2 is automatic testing apparatus for cement setting time structure, and this structure includes: support 1, turntable 7,
Crane 8, sliding bar 2 and sucked type electromagnet 9；Described turntable and crane are separately mounted to described
On support；Rotating disk 22 and rotating stepper motor 21 (as shown in Figure 5) it is provided with on described turntable；
Described crane is provided with test point resetting-mechanism 10, and in test point resetting-mechanism, is provided with test point 11
With displacement transducer 14；Described sliding bar is arranged on the upper end of described test point, and sliding bar is by described test point
Resetting-mechanism turns over turnback and realizes test point reset；Described sucked type magnet is arranged on described test point reset machine
The top of structure, and by a magnet fixed mount 16 fixing (as shown in Figure 3 and Figure 4).
On described sliding bar and the side of this sliding bar is provided with a pair displacement transducer；
Described sucked type magnet, tightly inhales sliding bar upper end when test point resets.
Being provided with electrical connection sampling end in above-mentioned rotating disk, this sampling end is electric with the signal of control system respectively
Pressure input and given voltage input end connect.
Above-mentioned sampling end obtains sampled signal when metal test mould 12, cement paste and test point conduct.
Above-mentioned metal test mould is arranged on the rotating pan, and is additionally provided with glass plate 13 in this rotating disk.
Being provided with casing 6 on above-mentioned support, described rotating disk is exposed and is positioned at the top of described casing.
Said determination instrument also includes that stepper motor 18, motor fixing plate 20, lifter plate 19 and test point are fixed
Frame 15；
Above-mentioned stepper motor 18 is connected with described test point resetting-mechanism by connecting plate for electric motor 17.
As shown in Figure 6, for the operation principle of the Automatic Levelling commercial measurement of institute of the present invention foundation, examination is i.e. worked as
When pin falls and encounters cement quiet slurry 23 surface, at this moment chip d will receive a signal of telecommunication, and automatically
Recording the numerical value of this position, this value is initial value, when test point sinks to the quiet slurry of cement and no longer sinks, and note
Numerical value this moment under record, is final value.Be worth at the beginning of deducting by final value is exactly that test point sinks to really deeply
Degree.
As long as it practice, meet cement under final set state, the signal of telecommunication, survey each time before can be produced
Examination can produce the signal of telecommunication.Therefore, series resistance and compare voltage V2Big I according to cement final set time
Resistance determine.But, owing to cement is under final set state, resistance is very big, is difficult to Accurate Determining,
And the cement of different model is also not quite similar at the resistance of final set state, therefore can only be come really by experiment
Determine series resistance and compare voltage V2Size.In order to ensure the stability that signal produces, total principle is
Series resistance is set to larger, compares voltage V2A little bit smaller (if setting relatively big, then can be because of power supply
The fluctuation of voltage causes erroneous judgement).Finally, determined by series resistance R be 0.5～1.5M Ω, relatively more electric
Pressure V2It is 0.5～1.5v.
Being illustrated in figure 7 the test flow chart measuring cement setting time, this flow process includes:
First will be equipped with the die trial that normal consistency starches only and put on the rotating pan, test starts, and starts timing,
Now test number (TN) N=1, crane Driving Stepping Motor M1 forward slowly rotarily drives test point and declines,
Until obtaining contact to judge that signal, M1 stop the rotation, record the reading (water of now displacement transducer
Cement paste face value), after 10 seconds, electromagnet power-off (makes test point start release from cement surface), and 30
After Miao, second time records the reading of displacement transducer, and the difference of twice reading value is test point and inserts cement
Depth value, after 5 seconds, M1 reversely rotates, and makes lifting platform to extreme higher position, and upset stepper motor M2 is just
To rotation turnback, electromagnet is energized, makes test point reset, and after 5 seconds, M2 reversely rotates 180 degree, with
Time rotating stepper motor rotate 8 degree, repeat test, until test point insertion depth first be 38 ± 1mm time,
It is judged as arriving initial set state, records presetting period T1, when test point insertion depth first is less than or equal to
During 0.5mm, it is judged that for arriving final set state, record final setting time T2, off-test.
Above-mentioned M1 is the Driving Stepping Motor of crane, and M2 is upset stepper motor, and M3 is for rotating step
Enter motor.
Although the embodiment that disclosed herein is as above, but described content is only to facilitate understand this
The embodiment invented and use, is not limited to the present invention.In any the technical field of the invention
Technical staff, on the premise of without departing from the spirit and scope that disclosed herein, can implement
And make any amendment and change in details in form, but the scope of patent protection of the present invention, still must be with institute
Attached claims are defined in the range of standard.
Claims (7)
1. an automatic testing apparatus for cement setting time, it is characterised in that described analyzer include support,
Turntable, crane, sliding bar and sucked type electromagnet；Described turntable and crane are separately mounted to
On described support；
Rotating disk and rotating stepper motor it is provided with on described turntable；
Described crane is provided with test point resetting-mechanism, and be provided with in test point resetting-mechanism test point and
Displacement transducer；
Described sliding bar is arranged on the upper end of described test point, and sliding bar is overturn by described test point resetting-mechanism
180 degree realize test point and reset；
Described sucked type electromagnet is arranged on the top of described test point resetting-mechanism, and is fixed by a magnet
Frame is fixed.
Automatic testing apparatus for cement setting time the most according to claim 1, it is characterised in that in institute
State on sliding bar and the side of this sliding bar is respectively provided with a displacement transducer；
Described sucked type electromagnet, tightly inhales sliding bar upper end when test point resets.
Automatic testing apparatus for cement setting time the most according to claim 1, it is characterised in that described
Be provided with electrical connection sampling end in rotating disk, this sampling end respectively with the signal voltage input of control system
Connect with given voltage input end.
Automatic testing apparatus for cement setting time the most according to claim 3, it is characterised in that described
Sampling end obtains sampled signal when metal test mould, cement paste and test point conduct.
Automatic testing apparatus for cement setting time the most according to claim 4, it is characterised in that described
Metal test mould is arranged on the rotating pan, and is additionally provided with glass plate in this rotating disk.
Automatic testing apparatus for cement setting time the most according to claim 1, it is characterised in that described
Being provided with casing on support, described rotating disk is exposed and is positioned at the top of described casing.
Automatic testing apparatus for cement setting time the most according to claim 1, it is characterised in that described
Analyzer also includes stepper motor I, motor fixing plate, lifter plate and test point fixed mount；
Described stepper motor I is connected with described test point resetting-mechanism by connecting plate for electric motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425686.9A CN104155212B (en) | 2014-08-26 | 2014-08-26 | A kind of automatic testing apparatus for cement setting time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425686.9A CN104155212B (en) | 2014-08-26 | 2014-08-26 | A kind of automatic testing apparatus for cement setting time |
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| Publication Number | Publication Date |
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| CN104155212A CN104155212A (en) | 2014-11-19 |
| CN104155212B true CN104155212B (en) | 2016-09-07 |
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| CN201410425686.9A Active CN104155212B (en) | 2014-08-26 | 2014-08-26 | A kind of automatic testing apparatus for cement setting time |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865373A (en) * | 2015-05-13 | 2015-08-26 | 张芳 | Method for measuring cement setting time in cement experiment |
| CN105445151A (en) * | 2015-12-02 | 2016-03-30 | 黄河勘测规划设计有限公司 | Automatic device for measuring setting time of concrete mixture |
| CN105784521B (en) * | 2016-04-29 | 2018-10-12 | 长江水利委员会长江科学院 | A kind of full-automatic injection resistance meter of concrete and setting time measurement method |
| CN106018759A (en) * | 2016-07-10 | 2016-10-12 | 北京慧物科联科技有限公司 | Full-automatic slurry initial setting and final setting time measuring device and method |
| CN106404606B (en) * | 2016-09-18 | 2019-02-19 | 宁波亿德仪器科技有限公司 | Concrete coagulating time measurement device |
| CN107991158B (en) * | 2018-01-29 | 2021-11-12 | 山东交通学院 | Bituminous mixture Marshall compaction instrument capable of controlling compaction temperature and test method |
| CN109342272B (en) * | 2018-11-14 | 2021-03-02 | 舟山道隆科技有限公司 | Automatic Vicat instrument |
| CN109470844A (en) * | 2018-12-19 | 2019-03-15 | 长安大学 | A kind of the standard dimension card device and its operating method of automatic survey setting time |
| CN110031363A (en) * | 2019-04-22 | 2019-07-19 | 长安大学 | A kind of ground polymers starches material initial set, final setting time test device and test method |
| CN110927012B (en) * | 2019-12-28 | 2022-09-16 | 宁波市交通建设工程试验检测中心有限公司 | Cement setting time detection method, computer storage medium and device |
| CN111141779A (en) * | 2020-01-07 | 2020-05-12 | 合肥工业大学 | Infiltration liquid curing time survey device |
| CN111912746B (en) * | 2020-06-09 | 2022-08-02 | 广西大学 | Quantitative evaluation method for analyzing concrete workability based on bottom resistance |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT389588B (en) * | 1987-04-29 | 1989-12-27 | Mayreder Keil List Bau | METHOD FOR CHECKING THE SOLIDIFICATION BEHAVIOR OR THE SETTING SPEED OF CEMENT-BONDED MATERIALS AND DEVICE FOR CARRYING OUT THE METHOD |
| CN201293756Y (en) * | 2008-11-10 | 2009-08-19 | 张传温 | Device for measuring cement consistency and setting time |
| CN201965072U (en) * | 2011-02-23 | 2011-09-07 | 葛洲坝集团试验检测有限公司 | Testing device for determining cement coagulation |
| CN203422301U (en) * | 2013-06-25 | 2014-02-05 | 重庆市中检建筑工程质量检测有限公司 | Tester for testing consistency and condensation of cement paste |
| CN203643296U (en) * | 2013-12-22 | 2014-06-11 | 湖南军成科技有限公司 | Vicat apparatus with function of quickly replacing needles |
| CN204028074U (en) * | 2014-08-26 | 2014-12-17 | 深圳市太科检测有限公司 | A kind of equipment measuring cement setting time |
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Denomination of invention: Automatic determining instrument of cement setting time Effective date of registration: 20200512 Granted publication date: 20160907 Pledgee: Bank of Communications Limited Shenzhen Branch Pledgor: SHENZHEN TAIKE TEST Co.,Ltd. Registration number: Y2020980002129 |
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Address after: 518053 1st floor, No.13, Shenyun Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Taike Technology Co.,Ltd. Address before: 518053 1st floor, No.13, Shenyun Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN TAIKE TEST CO.,LTD. |
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Denomination of invention: An automatic measuring instrument for cement setting time Effective date of registration: 20230524 Granted publication date: 20160907 Pledgee: Shenzhen small and medium sized small loan Co.,Ltd. Pledgor: Taike Technology Co.,Ltd. Registration number: Y2023980041722 |
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