CN202533400U - Automatic detector of concrete early-age cracks - Google Patents
Automatic detector of concrete early-age cracks Download PDFInfo
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- CN202533400U CN202533400U CN2012201752011U CN201220175201U CN202533400U CN 202533400 U CN202533400 U CN 202533400U CN 2012201752011 U CN2012201752011 U CN 2012201752011U CN 201220175201 U CN201220175201 U CN 201220175201U CN 202533400 U CN202533400 U CN 202533400U
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- right half
- dies
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- concrete
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Abstract
The utility model relates to an automatic detector of concrete early-age cracks. The automatic detector comprises a protective shell, a detection host, dies, an electrode, an electrode supporting seat and a positioning bolt, wherein the detection host, the dies, the electrode, the electrode supporting seat and the positioning bolt are all arranged in the protective shell; a plurality of dies are arranged, and each die comprises a bottom plate, a left half die and a right half die; the left half dies and the right half dies are provided with symmetrical oval grooves, and after the left half dies and the right half dies are spliced, oval die cavities are formed; corners of the left half dies and the right half dies are fixed on the bottom plate through vertical bolts, and both ends of the left half dies and the right half dies are fixed together through transverse bolts; the electrode is provided with a lead and a plug which are matched and connected, and the plug is used for connecting the detection host; and the electrode supporting seat is of an L shape and consists of a vertical plate and a transverse plate, a through hole used for penetrating the positioning bolt is formed in the transverse plate, and a through hole used for penetrating the electrode is formed in the vertical plate. According to the automatic detector, the crack conditions of a plurality of concrete test pieces are automatically recorded and monitored through the electrode so as to represent the capacities of resisting shrinkage cracks of concrete of different proportions.
Description
Technical field
The utility model relates to automatic tester, particularly a kind of instrument of measuring the concrete early crack.
Background technology
At present, industry is adopted plain concrete and reinforced concrete structure in a large number with covil construction, infrastructure, and Crack Control is an important indicator in the design of these engineering structures.The crack of xoncrete structure can influence security, permanance and the functions of use requirement of building, in order to control and reduce the generation in crack, usually need understand the early stage cracking sensitivity of the deformation performance, particularly base material of the cement matrix of various different proportionings.This just needs to measure the cracking time of different substrate materials.In the prior art, observe, because observation time is long through manual method; Specimen is many, and often careless the time, sample has ftractureed; Therefore; Be difficult to the difference between the cracking sensitivity of different materials is screened, particularly early stage fine crack also is difficult to find with magnifier.
The utility model content
For solving the problem of above-mentioned distress in concrete observation difficulty; The purpose of the utility model provides a kind of concrete early crack automatic tester; It writes down and monitors the cracking situation of a plurality of concrete samples automatically through electrode, resist the height of shrinkage cracking ability relatively thereby characterize different proportioning concrete.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of concrete early crack automatic tester comprises guard shield, detects main frame, mould, electrode, electrode support, bolt, and detection main frame, mould, electrode, electrode support, bolt all are placed in the guard shield; It is characterized in that: said mould has a plurality of, and each mould is made up of base plate and left and right half module, and left and right half module is provided with the half elliptic groove of symmetry; After the left and right half module splicing; Form oval die cavity, the bight of left and right half module is through vertically being bolted on the base plate, and the two ends of left and right half module are fixed together through cross bolts; Said electrode has the lead and the plug of supporting connection; Plug is used for being connected with the detection main frame, and said electrode support is L shaped, is made up of riser and transverse slat; Be provided for placing the through hole of bolt on the transverse slat, riser is provided with the through hole that is used to place electrode.
Said guard shield is made up of suitcase, and this suitcase internal placement has cushion blocking, and cushion blocking is provided with a plurality of caulking grooves, and said detection main frame, mould, electrode are placed on respectively in these caulking grooves, and said electrode support, bolt are placed in the die cavity of mould.
The utlity model has following positive beneficial effect:
This instrument is a kind of distress in concrete multichannel monitor, can test six samples simultaneously, so that compare and add up, testing efficiency is high, and accuracy rate is high.This instrument applies a voltage signal through the electrode pair conductive strips; Thereby detect the variation of conductive strips resistance value in real time; And the variation of conductive strips resistance value fed back to computing machine in real time, computing machine is abscissa axis with time, is axis of ordinates with the resistance value of conductive strips; Automatically draw out the curve that a conductive strips resistance value changed by the time; And show intuitively by display screen, can judge accurately from the variation of curve when cracking has taken place sample, just can find the position of crackle simultaneously along the track of conductive strips.
Description of drawings
Fig. 1 is the contour structures synoptic diagram of the utility model one embodiment.
Fig. 2 is the inner structure synoptic diagram of Fig. 1.
Fig. 3 is the exploded view of Fig. 2.
Fig. 4 is that electrode support, bolt are placed on the structural representation in the mould cavity.
Fig. 5 is the structural representation of mould.
Fig. 6 is the exploded view of Fig. 5.
Fig. 7 is the decomposition texture synoptic diagram of left and right half module.
Fig. 8 is the package assembly synoptic diagram of electrode support and die bottom plate.
Fig. 9 is the syndeton synoptic diagram of electrode and concrete sample.
Figure 10 is that electrode passes through plug and the syndeton synoptic diagram that detects main frame.
Figure 11 is the front elevation of Figure 10.
Embodiment
Label among the figure
1 shell 2 detects main frame 3 moulds
4 electrodes, 5 electrode supports, 6 base plates
7 left half module 8 right half module 9 grooves
10 grooves, 11 die cavitys, 12 vertical bolts
13 through holes, 14 screws, 15 cross bolts
16 nuts, 17 through holes, 18 leads
19 plugs, 20 risers, 21 transverse slats
22 caulking grooves, 23 caulking grooves, 24 caulking grooves
25 cushion blockings, 26 concrete samples, 27 panels
28 power switches, 29 pilot lamp, 30 case lids
31 casings, 32 bolts, 33 through holes
34 through holes
Please with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, the utility model is a kind of concrete early crack automatic tester, comprises guard shield 1, detects main frame 2, mould 3, electrode 4, electrode support 5; Mould 3 has six; Each mould 3 is made up of base plate 6 and left and right half module 7,8, and left and right half module 7,8 is provided with the half elliptic groove 9,10 of symmetry, after left and right half module 7,8 splicings; Form oval die cavity 11; Concrete moulding in die cavity 11, the bight of left and right half module 7,8 is fixed on the base plate 6 through vertical bolt 12, and the bight of left and right half module 7,8 is provided with the through hole 13 that is used to place vertical bolt 12; Have screw 14 on the base plate 6, vertical bolt 12 is screwed onto on the screw 14.
The two ends of left and right half module 7,8 are fixed together through cross bolts 15, and cross bolts 15 is by nut 16 lockings, and to improve the rigidity of mould 3, the two ends of left and right half module 7,8 have the through hole 17 that is used to place cross bolts 15.
Please with reference to Fig. 8, Fig. 9; Electrode 4 has the lead 18 and plug 19 of supporting connection; Plug 19 is used for being connected with detection main frame 2, and electrode support 5 is L shaped, is made up of riser 20 and transverse slat 21; Be provided for placing the through hole 33 of bolt 32 on the transverse slat 21, riser 20 is provided with the through hole 34 that is used to place electrode 4.
Guard shield 1 is made up of suitcase, detects main frame 2, mould 3, electrode 4, electrode support 5 and all is placed in the suitcase.Suitcase is made up of case lid 30 and casing 31.
Be furnished with cushion blocking 25 in the casing of suitcase, cushion blocking 25 can be made up of sponge.Cushion blocking 25 is provided with eight caulking grooves.
Wherein caulking groove 22 is used for placing detection main frame 2; Caulking groove 24 is used to place electrode 4 and supporting lead 18 and plug 19 thereof, and caulking groove 23 is used to place mould 3, in the present embodiment; Mould 3 has six; So caulking groove 23 also has six, in order to save the space, electrode support 5 and bolt 23 are placed in the die cavity 11 of mould 3 as shown in Figure 4.
The method of application of the utility model is following:
The first step please with reference to Fig. 1, Fig. 2, Fig. 3, is opened the case lid 30 of suitcase, and from casing 31, take out six moulds 3 and detect main frame 2,
Second step, please with reference to Fig. 4, electrode support in six moulds, 3 die cavitys 11 5 and bolt 32 are taken out, six moulds 3 just become state shown in Figure 5,
The 3rd step, please with reference to Fig. 5, the concrete of the different proportionings of cast in the die cavity 11 of six moulds 3, and jolt ramming, floating,
The 4th step; Hide maintenance with plastic sheeting immediately after pouring, remove mould 3 after 48 hours like Fig. 6, shown in Figure 7, the method for dismounting is earlier nut 16 to be backed out from cross bolts 15; Again cross bolts 15 is transferred to from through hole 17; Vertical bolt 12 is backed out from screw 14, left and right half module 7,8 just disassembles, and exposes the concrete sample 26 of moulding again.
The 5th step was coated with one deck conductive strips at the side surface of concrete sample 26, and the conductive strips continued circling that makes progress from the bottom of concrete sample 26 side surfaces arrives the top of concrete sample 26 side surfaces,
In the 6th step,, two electrode supports 5 are installed on the base plate 6 of each mould please with reference to Fig. 8, Fig. 9; The structure of these two electrode supports 5 is identical, all is made up of riser 20 and transverse slat 21, all has the through hole 33 that places bolt 32; But its through hole 34 high and low positions that are used to place electrode 4 are slightly different, one high and one low, during installation; Bolt 32 is set in the through hole 33, and is screwed onto in the screw 14 on the base plate 6, electrode support 5 just with base plate 6 firm combining.
Then two electrodes 4 are inserted on these two electrode supports 5; One of them electrode 4 bonds together through the lower extreme point (starting point) of conducting resinl and conductive strips, guarantees that contact is good, and another electrode 4 bonds together through the upper extreme point (terminal point) of conducting resinl and conductive strips; Guarantee that contact is good
The 7th step was inserted in the plug 19 of all electrodes 4 and detects on the socket corresponding on main frame 2 back sides, and is shown in figure 10,
The 8th step, will detect main frame 2 with data line and be connected with computing machine,
In the 9th step, please with reference to Figure 11, it is 50% that all test specimens are placed on humidity; Temperature is to carry out maintenance under 20 ℃ the drying condition, initially begins from maintenance, tests through detecting 2 pairs of concrete samples 26 of main frame; Conductive strips have no elasticity; When cracking took place, a saltus step will take place in the resistance of these conductive strips, promptly becomes very big suddenly.According to changes in resistance, just can confirm the cracking time of concrete sample 26, just can find the position of crackle simultaneously along the track of conductive strips.
This instrument is a kind of multichannel Crack Monitoring appearance, can test six concrete samples 26 (being designated hereinafter simply as sample) simultaneously, so that compare and add up; Improve testing efficiency simultaneously, this instrument adopts coordinate axis at the same time, writes down the cracking time of six samples through changes in resistance; Six samples are monitored simultaneously, and the panel 27 that detects main frame 2 is provided with power switch 28 and a plurality of LED lights 29, when cracking takes place some samples; LED light 29 flickers corresponding with it; This instrument applies a voltage signal through 4 pairs of conductive strips of electrode, thereby detects the variation of conductive strips resistance value in real time, and the resistance value of conductive strips is fed back to computing machine in real time; Computing machine is abscissa axis with time; Resistance value with conductive strips is an axis of ordinates, draws out the curve that a conductive strips resistance value changed by the time automatically, and is shown intuitively by computer screen; From the variation of curve accurately judgement sample when cracking has taken place, just can find the position of crackle simultaneously along the track of conductive strips.This instrument can be used for characterizing different proportioning concrete and resist the height of shrinkage cracking ability relatively.
Claims (2)
1. a concrete early crack automatic tester comprises guard shield, detects main frame, mould, electrode, electrode support, bolt, and detection main frame, mould, electrode, electrode support, bolt all are placed in the guard shield; It is characterized in that: said mould has a plurality of, and each mould is made up of base plate and left and right half module, and left and right half module is provided with the half elliptic groove of symmetry; After the left and right half module splicing; Form oval die cavity, the bight of left and right half module is through vertically being bolted on the base plate, and the two ends of left and right half module are fixed together through cross bolts; Said electrode has the lead and the plug of supporting connection; Plug is used for being connected with the detection main frame, and said electrode support is L shaped, is made up of riser and transverse slat; Be provided for placing the through hole of bolt on the transverse slat, riser is provided with the through hole that is used to place electrode.
2. a kind of concrete early crack automatic tester as claimed in claim 1; It is characterized in that: said guard shield is made up of suitcase; This suitcase internal placement has cushion blocking; Cushion blocking is provided with a plurality of caulking grooves, and said detection main frame, mould, electrode are placed on respectively in these caulking grooves, and said electrode support, bolt are placed in the die cavity of mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201752011U CN202533400U (en) | 2012-04-23 | 2012-04-23 | Automatic detector of concrete early-age cracks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201752011U CN202533400U (en) | 2012-04-23 | 2012-04-23 | Automatic detector of concrete early-age cracks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202533400U true CN202533400U (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201752011U Expired - Fee Related CN202533400U (en) | 2012-04-23 | 2012-04-23 | Automatic detector of concrete early-age cracks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202533400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316583A (en) * | 2017-07-31 | 2017-11-03 | 国网山东省电力公司郓城县供电公司 | One kind power supply construction Show board |
-
2012
- 2012-04-23 CN CN2012201752011U patent/CN202533400U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316583A (en) * | 2017-07-31 | 2017-11-03 | 国网山东省电力公司郓城县供电公司 | One kind power supply construction Show board |
| CN107316583B (en) * | 2017-07-31 | 2023-08-22 | 国网山东省电力公司郓城县供电公司 | Display fence for power supply construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20200423 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |