CN202562431U

CN202562431U - Micrometric displacement measurement device

Info

Publication number: CN202562431U
Application number: CN2012202364723U
Authority: CN
Inventors: 曹玉; 李屹罡; 黄志辉
Original assignee: 曹玉; 李屹罡
Priority date: 2012-05-24
Filing date: 2012-05-24
Publication date: 2012-11-28

Abstract

A micrometric displacement measurement device comprises a measurement detection module, a height adjustment module, a circuit amplification module and an anti-jamming shell body, wherein the anti-jamming shell body is composed of a base plate, a front plate, an upper cover plate, a dustproof film, a rear plate and a side plate, the measurement detection module is composed of a measurement probe, a measurement probe base, elastic bodies, a measurement column base, temperature compensation columns, a foil gauge patch board and foil gauges, the foil gauges are four in number, elastic bodies and the temperature compensation columns are respectively two in number, the height adjustment module is composed of an upper wedge block, a lower wedge block, a set screw and an adjusting screw rod, the circuit amplification module is composed of wire connectors and an amplification circuit board, the amplification circuit board is installed in the measurement column base, and the wire connectors are installed on the rear plate and are connected with the amplification circuit board though circuits. The micrometric displacement measurement device is compact in structure, small in size, light in weight, high in cost performance, detachable, convenient to install and carry, simple to operate, strong in anti-jamming capability, reliable in working, high in measurement accuracy, and wide in application scope.

Description

A kind of micro-displacement measuring device

Technical field

The utility model relates to a kind of micro-displacement measuring device.

Background technology

Need microdisplacement measurement more widely in modern delivery engineering and the commercial production; They possibly be static or dynamic the measurements, also possibly be online or offline inspection, accuracy of detection with 1 micron to 10 microns and tens of microns require in the majority; And require measurement mechanism to be easy to carry, simple to operate; And increasingly high requirement has been proposed stability and the environmental suitability that uses.

At present, existing micro-displacement measuring device function and usage is single, on-dismountable, and volume is big, costs an arm and a leg, can not be in operate as normal under the strong electromagnetic interference environment.

The utility model content

The utility model technical matters to be solved is, provides a kind of applied widely, and detachable, volume is little, low cost of manufacture, the micro-displacement measuring device of ability operate as normal under strong electromagnetic interference environment.

The utility model solves the technical scheme that its technical matters adopted: a kind of micro-displacement measuring device; Comprise and measure detection module, height control module, circuit amplification module and anti-interference housing; Said anti-interference housing is made up of base plate, header board, upper cover plate, dustproof film, back plate and side plate; Said dustproof film is positioned on the upper cover plate, and said dustproof film is provided with circular hole; Said measurement detection module is made up of measuring sonde, gage probe block, elastic body, measurement column base, temperature compensation post, foil gauge patching panel and foil gauge; Said measuring sonde is installed on the gage probe block; Said gage probe block is fixed on the elastic body, and said elastic body and temperature compensation post are installed on the measurement column base, and said foil gauge is four; On elastic body and the temperature compensation post each two, and link to each other with the circuit amplification module through corresponding foil gauge patching panel; Said height control module is made up of last voussoir, lower wedge block, holding screw and adjusting screw(rod), and the said voussoir of going up is positioned on the lower wedge block, and said adjusting screw(rod) links to each other with lower wedge block, and said holding screw is positioned on the header board; Said circuit amplification module is made up of connecting wire joint and magnification circuit plate, and said magnification circuit plate is installed on the measurement column base, and said connecting wire joint is installed on the plate of back, links to each other with magnification circuit plate through circuit.

The utility model is through measuring the measuring sonde of detection module; Displacement is converted into elastomeric compressive strain; The electric bridge that constitutes through the foil gauge on the elastic body converts compressive strain into voltage signal, and the bigger voltage signal of output is accomplished detection behind the oversampling circuit amplification module.

Compared with prior art, the utlity model has following characteristics: (1) is provided with the temperature compensation post, can eliminate the influence of temperature to foil gauge; (2) be provided with anti-interference housing, can shield outside electromagnetic interference (EMI); (3) owing to foil gauge in the measurement detection module can be sensed small strain, thereby can measure very micro displacement variation, accuracy of detection can reach 1 micron.

In sum, the utility model compact conformation, volume is little, and is in light weight, and cost performance is high, and is detachable, easy for installation, is easy to carry, and simple to operate, antijamming capability is strong, reliable operation, measuring accuracy is high, and is applied widely.

The utility model can be used for measuring, detecting and write down the static state and the dynamic process of engineering, as in wheel rail system, detecting ultra unbalance loading, in the road management system, realizes especially being used for the microdisplacement measurement under strong electromagnetic interference environment by the car body dynamic weighing.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a vertical view embodiment illustrated in fig. 1.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

With reference to accompanying drawing; Present embodiment comprises measures detection module, height control module, circuit amplification module and anti-interference housing; Said anti-interference housing is made up of base plate 1, header board 2, upper cover plate 5, dustproof film 6, back plate 11 and side plate 17; Said dustproof film 6 is positioned on the upper cover plate 5, and said dustproof film 6 is provided with circular hole; Said measurement detection module is made up of measuring sonde 8, gage probe block 7, elastic body 4, measurement column base 14, temperature compensation post 15, foil gauge patching panel 16, foil gauge 18; Said measuring sonde 8 is installed on the gage probe block 7; Said gage probe block 7 is fixed on the elastic body 4; Said elastic body 4 is installed on the measurement column base 14 with temperature compensation post 15; Said foil gauge is four, on elastic body 4 and the temperature compensation post 15 each two, and link to each other with the circuit amplification module through corresponding foil gauge patching panel; Said height control module is made up of last voussoir 13, lower wedge block 12, holding screw 3 and adjusting screw(rod) 10, and the said voussoir 13 of going up is positioned on the lower wedge block 12, and said adjusting screw(rod) 10 links to each other with lower wedge block 12, and said holding screw 3 is positioned on the header board 2; Said circuit amplification module is made up of connecting wire joint 9 and magnification circuit plate 19, and said magnification circuit plate 19 is installed on the measurement column base 14, and said connecting wire joint 9 is installed on the plate 11 of back, links to each other with magnification circuit plate 19 through circuit.

The horizontal level of said adjusting screw(rod) 10 scalable lower wedge blocks 12, the inclined-plane through between last voussoir 13 and the lower wedge block 12 plays the effect of voussoir 13 in the lifting.Said holding screw 3 plays voussoir 13 positions in the tightening.

During measurement, at first present embodiment is fixed on the pedestal of measured workpiece, adjusts adjusting screw(rod) 10 then; Promote lower wedge block 12, voussoir 13 in lower wedge block 12 liftings, and then lifting measurement column base 14; Measuring sonde on the measurement column base 14 8 is ejected along the circular hole on the dustproof film 6; After touching measured workpiece, tighten holding screw 3, the fixing voussoir 13 of going up; When the oriented bottom offset of measured workpiece; Measuring sonde 8 presses down and causes elastic body 4 compressions and produce compressive strain; This can cause the resistance of foil gauge 18 to change, and the electric bridge through elastic body 4 and the foil gauge on the temperature compensation post 15 are formed converts changes in resistance into the variation of output voltage; Pass through magnification circuit plate 19 at last with voltage amplification, the voltage signal of output gets into follow-up equipment through coupling head 9 and carries out the collection and the processing of data.

Claims

1. micro-displacement measuring device; It is characterized in that: comprise and measure detection module, height control module, circuit amplification module and anti-interference housing; Said anti-interference housing is made up of base plate, header board, upper cover plate, dustproof film, back plate and side plate; Said dustproof film is positioned on the upper cover plate, and said dustproof film is provided with circular hole; Said measurement detection module is made up of measuring sonde, gage probe block, elastic body, measurement column base, temperature compensation post, foil gauge patching panel and foil gauge; Said measuring sonde is installed on the gage probe block; Said gage probe block is fixed on the elastic body, and said elastic body and temperature compensation post are installed on the measurement column base, and said foil gauge is four; On elastic body and the temperature compensation post each two, and link to each other with the circuit amplification module through corresponding foil gauge patching panel; Said height control module is made up of last voussoir, lower wedge block, holding screw and adjusting screw(rod), and the said voussoir of going up is positioned on the lower wedge block, and said adjusting screw(rod) links to each other with lower wedge block, and said holding screw is positioned on the header board; Said circuit amplification module is made up of connecting wire joint and magnification circuit plate, and said magnification circuit plate is installed on the measurement column base, and said connecting wire joint is installed on the plate of back, links to each other with magnification circuit plate through circuit.