CN203894111U - Electrical measuring device of elastic modulus of static pressure - Google Patents

Electrical measuring device of elastic modulus of static pressure Download PDF

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Publication number
CN203894111U
CN203894111U CN201420233725.0U CN201420233725U CN203894111U CN 203894111 U CN203894111 U CN 203894111U CN 201420233725 U CN201420233725 U CN 201420233725U CN 203894111 U CN203894111 U CN 203894111U
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CN
China
Prior art keywords
strain
pressure
elastic modulus
static
electric probe
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420233725.0U
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Chinese (zh)
Inventor
杨圣春
孙建波
吕嘉
孙晓平
付萍
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Inner Mongolia University of Science and Technology
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Inner Mongolia University of Science and Technology
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Publication date
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Priority to CN201420233725.0U priority Critical patent/CN203894111U/en
Application granted granted Critical
Publication of CN203894111U publication Critical patent/CN203894111U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model belongs to the technical field of detection of building materials, and particularly relates to an electrical measuring device of elastic modulus of concrete static pressure. The device comprises a pressure strain data collector, a connecting lead, an auxiliary strain gage adhesion apparatus and a pressure sensor, wherein the auxiliary strain gage adhesion apparatus comprises a cover plate, and a strain gage adhesion hole is formed in the center of the cover plate; one end of the connecting lead is connected with a strain gage adhered on a test piece, and the other end of the connecting lead is eclectically connected with the pressure strain data collector; and the pressure strain data collector is eclectically connected with the pressure sensor. The device can be used for conveniently, accurately and quickly measuring the elastic modulus of the concrete static pressure by means of the principle of an electrical measuring method.

Description

A kind of static(al) pressurized elastic modulus electric probe device
Technical field
The utility model belongs to building materials detection technique field, is specifically related to a kind of concrete static(al) pressurized elastic modulus electric probe device.
Background technology
At present, known concrete static(al) pressurized elasticity modulus measuring method is micro-deformeter method, equipment is mainly comprised of clock gauge and fixed support, there is Installation and Debugging complexity, data discrete, problem that invalidate the test ratio is high in it, in view of the limited amount that keeps sample of test specimen in current Practical Project, often cause and cannot for engineering structure, accurately provide the problem of static(al) pressurized elastic modulus data, to engineering construction, bring unnecessary difficulty.
Summary of the invention
In order to overcome, the debugging of existing assay method is loaded down with trivial details, data discrete, defect that invalidate the test ratio is high, the utility model provides a kind of concrete static(al) pressurized elastic modulus electric probe device, and this device can be fast, stable and realize exactly the mensuration of concrete static(al) pressurized elastic modulus.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A concrete static(al) pressurized elastic modulus electric probe device, comprises pressure-strain data collecting instrument, connects wire, foil gauge auxiliary sticking equipment and pressure transducer; Foil gauge auxiliary sticking equipment comprises cover plate, and cover plate central authorities have strain gauge adhesion hole; Connect wire one end and be connected with the foil gauge of pasting on test block, the other end is electrically connected to pressure-strain data collecting instrument; Pressure-strain data collecting instrument is electrically connected to pressure transducer.
Further, described strain gauge adhesion hole is dumbbell shape, and two ends have bonding agent and process hole.
Further, lower end, middle part, described strain gauge adhesion hole is with rule.
Further, described side edge thereof is provided with cover plate baffle plate.
Further, described foil gauge auxiliary sticking equipment also comprises base, and bottom margin place is provided with base baffle.
Further, described connection wire is divided into compensating plate connection wire and is connected wire with test pieces, and one end temperature compensation foil gauge that compensating plate connects wire is connected, and the other end is electrically connected to strain data Acquisition Instrument; One end that test pieces connects wire is connected with examination foil gauge, and the other end is electrically connected to pressure-strain data collecting instrument.
Further, described pressure transducer bottom is fixed with billet.
Further, described billet is of a size of 150mm * 150mm * 20mm.
Further, described strain data Acquisition Instrument comprises control knob, pressure display screen and strain display screen, and pressure display screen and strain display screen are respectively used to show pressure, strain data; Control knob is preserved for switching on and shutting down, stress zero clearing, strain zero clearing, stress preservation, strain.
The beneficial effects of the utility model: this apparatus structure is simple, easy to operate, can be fast, stable, measure concrete static(al) pressurized elastic modulus exactly, for engineering project provides reliable parameter support.
Accompanying drawing explanation
Fig. 1 is foil gauge auxiliary sticking equipment cover plate schematic diagram;
Fig. 2 is foil gauge auxiliary sticking plant bottom case schematic diagram;
Fig. 3 is binary channels full-bridge pressure and strain data Acquisition Instrument, connect wire, pressure transducer connection diagram;
Wherein: 1. strain gauge adhesion hole, 2. adhesive treatment hole, 3. rule, 4. cover plate baffle plate, 5. base baffle, 6. base, 7. pressure transducer, 8. billet, 9. batt joint wire clamp, 10. compensating plate connects wire, 11. test pieces connect wire, 12. control knobs, 13. pressure display screens, 14. strain display screens, 15. pressure-strain data collecting instruments.
Embodiment
As shown in Figure 1 to Figure 3, a kind of concrete static(al) pressurized elastic modulus electric probe device, comprises pressure-strain data collecting instrument 15, connects the fixedly pressure transducer 7 of 150mm * 150mm * 20mm billet 8 of wire, foil gauge auxiliary sticking equipment and bottom.
Foil gauge auxiliary sticking equipment comprises cover plate and base 6, and cover plate and base 6 are used in conjunction with, and all of thin corrosion resistant plate, makes.Cover plate central authorities have a dumbbell shape strain gauge adhesion hole 1, and cover plate surrounding has cover plate baffle plate 4, and the two ends in dumbbell shape strain gauge adhesion hole 1, for getting rid of the bubble producing when bonding agent is used, are called bonding agent and process hole 2.Strain gauge adhesion is at the middle part in strain gauge adhesion hole 1, and rule 3 is posted in the lower end at 1 middle part, strain gauge adhesion hole, for measuring the distance that will paste between foil gauge.The edge of the base 6 of foil gauge auxiliary sticking equipment is provided with base baffle 5, for placing test block.
Connection wire is divided into compensating plate connection wire 10 and is connected wire 11 with test pieces, and one end that compensating plate connects wire 10 is connected with temperature compensation foil gauge by batt joint wire clamp 9, and the other end is electrically connected to pressure-strain data collecting instrument 15.One end that test pieces connects wire 11 is connected with test foil gauge by batt joint wire clamp 9, and the other end is electrically connected to pressure-strain data collecting instrument 15.
Pressure-strain data collecting instrument 15 comprises control knob 12, pressure display screen 13 and strain display screen 14, and control knob is preserved for switching on and shutting down, stress zero clearing, strain zero clearing, stress preservation, strain.Binary channels full-bridge pressure-strain data collecting instrument 13 and the bottom fixedly pressure transducer 7 of billet 8 are electrically connected to, and then realize the synchronous acquisition of pressure and strain data, and by pressure display screen 11 and strain display screen 12, show data respectively.
The test process of this device is as follows:
The maintenance of concrete static(al) pressurized elastic modulus standard specimen is after the length of time, test block is positioned between the base baffle 5 on the strain gauge adhesion utility appliance base 6 shown in Fig. 2, the side that test block need to be pasted foil gauge upward, foil gauge auxiliary sticking equipment cover plate shown in Fig. 1 is positioned over to test block end face, cover plate baffle plate 4 is close to test block edge, after the concrete surface polishing at 1 position, strain gauge adhesion hole is clean with sand paper, smear gently skim cementing agent, then utilize rule 3 to paste foil gauge in 1 middle part in strain gauge adhesion hole, and by the mode of repeatedly pushing, unnecessary cementing agent and air are drained into 2 places, adhesive treatment hole, after inspection stickup is closely knit, realized the stickup of this position foil gauge.Overturn on foil gauge auxiliary sticking plant bottom case 180 ° of test specimens, repeat the stickup that said procedure is realized the 2nd foil gauge on this test specimen.Consider the temperature compensation in test and realize full-bridge mode electrical measurement, the foil gauge of stickup is divided into test foil gauge and temperature compensation foil gauge, and test foil gauge is identical with temperature compensation foil gauge specification.
After bonding agent solidifies, two compensating plates in Fig. 2 shown device being connected to wire 10 is connected with two temperature compensation foil gauges in test block by batt joint wire clamp 9, two test pieces are connected to wire 11 to be connected by two built-in testing foil gauges in batt joint wire clamp 9 test test specimens, after check circuit is errorless, test block is positioned on pressure testing machine pressing plate, by bottom fixedly the pressure transducer 7 of billet 8 be positioned over test specimen top, billet 8 and test specimen justified margin, pressure and mode in accordance with regulations load, by pressure-strain data collecting instrument 13 synchronous acquisition pressure and strain datas, and by pressure display screen 11 and strain display screen 12, show data respectively, after loaded record data, realized the mensuration of concrete static(al) pressurized elastic modulus.The disclosed proving installation of the utility model, not only can Simultaneous Determination pressure and strain, can also distinguish separately and measure, not only can be for the mensuration of concrete in static power pressurized elastic modulus, and also can be for other occasion.

Claims (9)

1. a static(al) pressurized elastic modulus electric probe device, is characterized in that: comprise pressure-strain data collecting instrument (15), connect wire, foil gauge auxiliary sticking equipment and pressure transducer (7); Foil gauge auxiliary sticking equipment comprises cover plate, and cover plate central authorities have strain gauge adhesion hole (1); Connect wire one end and be connected with the foil gauge of pasting on test block, the other end is electrically connected to pressure-strain data collecting instrument (15); Pressure-strain data collecting instrument (15) is electrically connected to pressure transducer (7).
2. static(al) pressurized elastic modulus electric probe device as claimed in claim 1, described strain gauge adhesion hole (1) is dumbbell shape, two ends are that bonding agent is processed hole (2).
3. static(al) pressurized elastic modulus electric probe device as claimed in claim 2, lower end, middle part, described strain gauge adhesion hole (1) is with rule (3).
4. static(al) pressurized elastic modulus electric probe device as claimed in claim 1, described side edge thereof is provided with cover plate baffle plate (4).
5. the static(al) pressurized elastic modulus electric probe device as described in one of as any in claim 1 to 4, described foil gauge auxiliary sticking equipment also comprises base (6), bottom (6) edge is provided with base baffle (5).
6. static(al) pressurized elastic modulus electric probe device as claimed in claim 5, described connection wire is divided into compensating plate connection wire (10) and is connected wire (11) with test pieces, one end temperature compensation foil gauge that compensating plate connects wire (10) is connected, and the other end is electrically connected to strain data Acquisition Instrument (15); One end that test pieces connects wire (11) is connected with examination foil gauge, and the other end is electrically connected to pressure-strain data collecting instrument (15).
7. static(al) pressurized elastic modulus electric probe device as claimed in claim 5, described pressure transducer (7) bottom is fixed with billet (8).
8. static(al) pressurized elastic modulus electric probe device as claimed in claim 7, described billet (8) is of a size of 150mm * 150mm * 20mm.
9. static(al) pressurized elastic modulus electric probe device as claimed in claim 8, described strain data Acquisition Instrument (15) comprises control knob (12), pressure display screen (13) and strain display screen (14), pressure display screen (11) and strain display screen (12) are respectively used to show pressure, strain data; Control knob (12) is preserved for switching on and shutting down, stress zero clearing, strain zero clearing, stress preservation, strain.
CN201420233725.0U 2014-05-08 2014-05-08 Electrical measuring device of elastic modulus of static pressure Expired - Fee Related CN203894111U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420233725.0U CN203894111U (en) 2014-05-08 2014-05-08 Electrical measuring device of elastic modulus of static pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420233725.0U CN203894111U (en) 2014-05-08 2014-05-08 Electrical measuring device of elastic modulus of static pressure

Publications (1)

Publication Number Publication Date
CN203894111U true CN203894111U (en) 2014-10-22

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Application Number Title Priority Date Filing Date
CN201420233725.0U Expired - Fee Related CN203894111U (en) 2014-05-08 2014-05-08 Electrical measuring device of elastic modulus of static pressure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108088731A (en) * 2017-11-29 2018-05-29 中国航空工业集团公司沈阳飞机设计研究所 A kind of aircraft nose landing gear outer barrel strut connector launch slow test method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108088731A (en) * 2017-11-29 2018-05-29 中国航空工业集团公司沈阳飞机设计研究所 A kind of aircraft nose landing gear outer barrel strut connector launch slow test method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141022

Termination date: 20200508

CF01 Termination of patent right due to non-payment of annual fee