CN104155212A - Automatic determining instrument of cement setting time - Google Patents
Automatic determining instrument of cement setting time Download PDFInfo
- Publication number
- CN104155212A CN104155212A CN201410425686.9A CN201410425686A CN104155212A CN 104155212 A CN104155212 A CN 104155212A CN 201410425686 A CN201410425686 A CN 201410425686A CN 104155212 A CN104155212 A CN 104155212A
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- Prior art keywords
- test point
- setting time
- cement
- cement setting
- test
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- 239000004568 cement Substances 0.000 title claims abstract description 43
- 238000012360 testing method Methods 0.000 claims abstract description 92
- 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 7
- 230000000052 comparative effect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000013008 moisture curing Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an automatic determining instrument of cement setting time. The automatic determining instrument includes a machine base, a rotating bench, a lifting bracket, a sliding rod and a suction-cup-typed electromagnet. The rotating bench and the lifting bracket are installed on the machine base. The rotating bench is provided with a rotating disk and a rotary stepping motor. The lifting bracket is provided with a test needle resetting mechanism in which a test needle and a displacement sensor are arranged. The sliding rod is disposed on an upper end of the test needle and is turned by 180 degrees through the test needle resetting mechanism for achieving reset of the test needle. The suction-cup-typed electromagnet is disposed above the test needle resetting mechanism and is fixed through an electromagnet fixing bracket. The automatic determining instrument, according to a national test standard, can simulate the whole process of an artificial operation, is convenient to operate and is high in test precision.
Description
Technical field
The present invention relates to earthwork test Instrument technical field, relate in particular to a kind of automatic testing apparatus for cement setting time.
Background technology
Be one of leading indicator of cement quality setting time, in the < < general purpose portland cement > > of standard GB175-2007, stipulated portland cement presetting period and final setting time.Meanwhile, the assay method of GB GB/T1346-2011 cement setting time.Cement setting be adopt in certain hour, whether test point can sink to the certain depth of sample in die trial determines.
The mensuration in presetting period: measure for the first time when test specimen maintenance in moisture curing box adds after water 30min.During mensuration, take out die trial and be put under test point, after test point and cement paste Surface Contact, sink to cement paste test point Vertical Free.When if test point stops sinking or discharges test point 30s, when test point is sink to apart from base plate 4mm ± 1mm, for cement reaches initial set state, repeat said determination, reach initial set state to cement.Test specimen maintenance in moisture curing box adds water to the presetting period that time that cement reaches initial set state is cement.
The mensuration of final setting time: after completing presetting period mensuration, test specimen is put into moisture curing box maintenance, measures once every 15min while closing on the final setting time of regulation, when test point sinks to examination body 0.5mm, for cement reaches final set state.Test specimen maintenance in moisture curing box adds water to the final setting time that time that cement reaches final set state is cement.
Due to when surveying, this value of the 0.5mm of final set state is difficult to accurately observation, therefore special provision in standard GB/T 1346-2011, in order accurately to observe the situation that sinks to of narrow and small region test point, the mensuration of final setting time adopts the special-purpose test point that annular annex is housed, when special-purpose test point sinks to examination body 0.5mm, at this moment annular annex can not be left a trace on examination body, that is to say and does not occur that for the last time annular annex vestige is final set.In standard, stipulate simultaneously, the die trial of overturning immediately after the presetting period arrives, whether object is that clean slurry surface is very smooth when measuring final set, can accurately observe the annex on final set pin (being special-purpose test point) leave a trace.
Current domestic industry is to adopt hand Vicat apparatus (accompanying drawing 1 is shown in by this instrument outward appearance and primary structure, and wherein 1 is support, and 2 is sliding bar, and 3 is slack adjuster, and 4 is pointer, and 5 is scale) to measure the setting time of cement mostly.This is a kind of more than 100 year historical classic method that have, and adopts manual operations, every five minutes or 15 minutes, operates once, and the degree of depth that observation test point sinks to from cement paste surface freely falling body is judged just, final setting time.
From the method for testing of manual Vicat apparatus, can find out, this method is time-consuming, effort, the mensuration that each sample will be one by one, operating personnel need several hours even tens hours ground wait for, observe the arrival of final setting time.And, due to operating personnel's the skill level accuracys that also affect measurement result different from ability.Thereby the setting time of carrying out automatically, accurately to measure cement in the urgent need to automatic analyzer.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide and a kind ofly can imitate manual operation overall process, and the automatic testing apparatus for cement setting time easy to operate, measuring accuracy is high.
Object of the present invention realizes by following technical scheme:
An automatic testing apparatus for cement setting time, this equipment comprises:
Support, universal stage, crane, sliding bar and sucked type electromagnet; Described universal stage and crane are arranged on respectively on described support;
On described universal stage, be provided with rotating disc and rotating stepper motor;
Test point resetting-mechanism is installed in described crane, and is provided with test point and displacement transducer in test point resetting-mechanism;
Described sliding bar is arranged on the upper end of described test point, and sliding bar turns over turnback by described test point resetting-mechanism and realizes test point and reset;
Described sucked type magnet is arranged on the top of described test point resetting-mechanism, and fixes by a magnet fixed mount.
Compared with prior art, one or more embodiment of the present invention can have the following advantages by tool:
According to national testing standard, can imitate manually-operated overall process, easy to operate, measuring accuracy is higher.
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;
Structural representation when Fig. 3 is test point reset;
Fig. 4 is the structural representation of test point resetting-mechanism;
Fig. 5 is the structural representation of universal stage;
Fig. 6 is the schematic diagram that the present invention adopts Automatic Levelling commercial measurement;
Fig. 7 adopts the present invention to measure the test flow chart of cement setting time.
Embodiment
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 comprises: support 1, universal stage 7, crane 8, sliding bar 2 and sucked type electromagnet 9; Described universal stage and crane are arranged on respectively on described support; On described universal stage, be provided with rotating disc 22 and rotating stepper motor 21 (as shown in Figure 5); Test point resetting-mechanism 10 is installed in described crane, and in test point resetting-mechanism, is provided with test point 11 and displacement transducer 14; Described sliding bar is arranged on the upper end of described test point, and sliding bar turns over turnback by described test point resetting-mechanism and realizes 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 16 fixing (as shown in Figure 3 and Figure 4).
On described sliding bar and a side of this sliding bar a pair of displacement transducer is installed;
Described sucked type magnet, the tight sliding bar upper end of inhaling while resetting for test point.
On above-mentioned rotating disc, be provided with electrical connection sampling end, this sampling end is connected with given voltage input end with the signal voltage input end of control system respectively.
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 rotating disc, and is also provided with glass plate 13 on this rotating disc.
On above-mentioned support, be provided with casing 6, described rotating disc exposes and is positioned at the top of described casing.
The said equipment also comprises stepper motor 18, motor fixing plate 20, lifter plate 19 and test point fixed mount 15;
Above-mentioned stepper motor is connected with described test point resetting-mechanism by connecting plate for electric motor 17.
As shown in Figure 6, principle of work for the Automatic Levelling commercial measurement of institute of the present invention foundation, when test point falls and encounter the quiet slurry of cement 23 surface, at this moment chip d will receive an electric signal, 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, record numerical value this moment, be final value.What by final value, deduct that initial value obtains is exactly the real sinkage of test point.
In fact, as long as meet cement under final set state, can produce electric signal, test each time before can produce electric signal.Therefore, resistance in series and comparative voltage V
2the resistance of large I during according to cement final set determine.But because cement is under final set state, resistance is very large, be 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 come by experiment to determine resistance in series and comparative voltage V
2size.For the stability that guarantees that signal produces, total principle is that resistance in series is set largerly, comparative voltage V
2a little bit smaller (if setting is larger, can cause because of the fluctuation of supply voltage erroneous judgement).Finally, determined resistance in series R is 0.5～1.5M Ω, comparative voltage V
2be 0.5～1.5v.
Be illustrated in figure 7 the test flow chart of measuring cement setting time, this flow process comprises:
First the die trial that the clean slurry of normal consistency is housed is placed on rotating disc, test starts, start timing, test number (TN) N=1 now, crane Driving Stepping Motor M1 forward slow circumvolve drives test point to decline, until obtain contact judgement signal, M1 stops the rotation, record the now reading of displacement transducer (cement paste face value), after 10 seconds, electromagnet power-off (making test point start to discharge from cement surface), after 30 seconds, the reading of recorded bit displacement sensor for the second time, the difference of twice reading value is the depth value that test point inserts cement, after 5 seconds, M1 reverse rotation, make lifting table to extreme higher position, upset stepping motor M 2 is rotated in the forward 180 degree, electromagnet energising, test point is resetted, after 5 seconds, M2 reverse rotation 180 degree, 8 degree of rotating stepper motor rotation simultaneously, revision test, until test point is when insertion depth is 38 ± 1mm first, be judged as the initial set state that arrives, record presetting period T1, when test point is when insertion depth is less than or equal to 0.5mm first, be judged as the final set state that arrives, 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 rotating stepper motor.
Although the disclosed embodiment of the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention, not in order to limit the present invention.Technician in any the technical field of the invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and in details; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (7)
1. an automatic testing apparatus for cement setting time, is characterized in that, described equipment comprises support, universal stage, crane, sliding bar and sucked type electromagnet; Described universal stage and crane are arranged on respectively on described support;
On described universal stage, be provided with rotating disc and rotating stepper motor;
Test point resetting-mechanism is installed in described crane, and is provided with test point and displacement transducer in test point resetting-mechanism;
Described sliding bar is arranged on the upper end of described test point, and sliding bar turns over turnback by described test point resetting-mechanism and realizes test point and reset;
Described sucked type magnet is arranged on the top of described test point resetting-mechanism, and fixes by a magnet fixed mount.
2. automatic testing apparatus for cement setting time according to claim 1, is characterized in that, in institute
State on sliding bar and a side of this sliding bar is provided with a pair of displacement transducer;
Described sucked type magnet, the tight sliding bar upper end of inhaling while resetting for test point.
3. automatic testing apparatus for cement setting time according to claim 1, is characterized in that, is provided with electrical connection sampling end on described rotating disc, and this sampling end is connected with given voltage input end with the signal voltage input end of control system respectively.
4. automatic testing apparatus for cement setting time according to claim 3, is characterized in that, described sampling end obtains sampled signal when metal test mould, cement paste and test point conduct.
5. automatic testing apparatus for cement setting time according to claim 4, is characterized in that, described metal test mould is arranged on rotating disc, and is also provided with glass plate on this rotating disc.
6. automatic testing apparatus for cement setting time according to claim 1, is characterized in that, on described support, is provided with casing, and described rotating disc exposes and be positioned at the top of described casing.
7. automatic testing apparatus for cement setting time according to claim 1, is characterized in that, described equipment also comprises stepper motor, motor fixing plate, lifter plate and test point fixed mount;
Described stepper motor is connected with described test point resetting-mechanism by connecting plate for electric motor.
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| CN201410425686.9A CN104155212B (en) | 2014-08-26 | 2014-08-26 | A kind of automatic testing apparatus for cement setting time |
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|---|---|---|---|
| CN201410425686.9A CN104155212B (en) | 2014-08-26 | 2014-08-26 | A kind of automatic testing apparatus for cement setting time |
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| CN104155212A true CN104155212A (en) | 2014-11-19 |
| CN104155212B CN104155212B (en) | 2016-09-07 |
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Cited By (14)
| 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 |
| CN105784521A (en) * | 2016-04-29 | 2016-07-20 | 长江水利委员会长江科学院 | Full-automatic concrete penetration resistance meter and concrete setting time measuring 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 |
| CN106404606A (en) * | 2016-09-18 | 2017-02-15 | 宁波亿德仪器科技有限公司 | Testing device of concrete setting time |
| CN107991158A (en) * | 2018-01-29 | 2018-05-04 | 山东交通学院 | The asphalt marshall compaction instrument and test method of controllable compaction temperature |
| CN109342272A (en) * | 2018-11-14 | 2019-02-15 | 舟山道隆科技有限公司 | Automatic Vicat apparatus |
| 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 |
| CN110927012A (en) * | 2019-12-28 | 2020-03-27 | 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 |
| CN111912746A (en) * | 2020-06-09 | 2020-11-10 | 广西大学 | Quantitative evaluation method for analyzing concrete workability based on bottom resistance |
| CN118150400A (en) * | 2024-05-11 | 2024-06-07 | 三亚华盛水泥粉磨有限公司 | Quality detection system for cement production |
| CN118150400B (en) * | 2024-05-11 | 2024-07-16 | 三亚华盛水泥粉磨有限公司 | Quality detection system for cement production |
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Cited By (20)
| 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 |
| CN105784521A (en) * | 2016-04-29 | 2016-07-20 | 长江水利委员会长江科学院 | Full-automatic concrete penetration resistance meter and concrete setting time measuring method |
| 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 |
| CN106404606A (en) * | 2016-09-18 | 2017-02-15 | 宁波亿德仪器科技有限公司 | Testing device of concrete setting time |
| 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 |
| CN107991158A (en) * | 2018-01-29 | 2018-05-04 | 山东交通学院 | The asphalt marshall compaction instrument and test method of controllable compaction temperature |
| CN109342272A (en) * | 2018-11-14 | 2019-02-15 | 舟山道隆科技有限公司 | Automatic Vicat apparatus |
| 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 |
| CN110927012A (en) * | 2019-12-28 | 2020-03-27 | 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 |
| 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 |
| CN111912746A (en) * | 2020-06-09 | 2020-11-10 | 广西大学 | Quantitative evaluation method for analyzing concrete workability based on bottom resistance |
| CN111912746B (en) * | 2020-06-09 | 2022-08-02 | 广西大学 | Quantitative evaluation method for analyzing concrete workability based on bottom resistance |
| CN118150400A (en) * | 2024-05-11 | 2024-06-07 | 三亚华盛水泥粉磨有限公司 | Quality detection system for cement production |
| CN118150400B (en) * | 2024-05-11 | 2024-07-16 | 三亚华盛水泥粉磨有限公司 | Quality detection system for cement production |
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| CN104155212B (en) | 2016-09-07 |
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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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