CN203024723U - Automatic displacement meter - Google Patents
Automatic displacement meter Download PDFInfo
- Publication number
- CN203024723U CN203024723U CN 201220709405 CN201220709405U CN203024723U CN 203024723 U CN203024723 U CN 203024723U CN 201220709405 CN201220709405 CN 201220709405 CN 201220709405 U CN201220709405 U CN 201220709405U CN 203024723 U CN203024723 U CN 203024723U
- Authority
- CN
- China
- Prior art keywords
- displacement meter
- automatic displacement
- rotation axis
- housing
- magnet
- Prior art date
- 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
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model relates to an automatic displacement meter, which comprises a shell and a fixture which is arranged outside the shell, wherein a cylindrical rotating shaft which can rotate in the axial direction is arranged in the shell, a steel wire rope is wound on the rotating shaft, one end of the steel wire rope extends outside the shell and is fixedly connected with the fixture, the outer surface of the bottom surface of the rotating shaft is circumferentially and uniformly provided with a plurality of magnets, a sensing chip which can generate a pulse signal after contacting or approaching the magnets is arranged in the shell, and the sensing chip is connected with a control circuit for recording the times of the pulse signal. The automatic displacement meter is simple in structure and convenient to use; a measurement result is free from being influenced by external conditions such as the environment and the temperature; and the automatic displacement meter can be widely applied to the field of monitoring of earth surface cracks and is particularly applicable to the severe condition.
Description
Technical field
The utility model relates to a kind of automatic detection device, is specifically related to a kind of Automatic displacement meter of the width for measuring surface cracks.
Background technology
Existing displacement meter mainly contains the resistance-type displacement meter, capacitive displacement is taken into account the fiber optics displacement meter.Wherein, the resistance-type displacement meter sticks on elastic sensing element by a strain ga(u)ge, variable quantity is transformed into distortion and the strain of flexible member, then is output as the electric weight of displacement by circuit, its shortcoming is at high temperature to reach under the nonlinear impact of flexible member to cause data inaccurate; The capacitive displacement meter is to change by a mobilizable pole plate and fixed polar plate occurrence positions, thereby make capacitance variations cause the variation of electric weight, realize monitoring variation of distance between them by circuit, its shortcoming is corresponding measurement result and circuit, the complex structure of affecting in the edge that produces; The fiber optics displacement meter is to be converted into by measuring catoptrical intensity the variation that electric signal comes judgment object, and its shortcoming is that the impact that is vulnerable to surround lighting causes measurement result inaccurate.
The utility model content
For overcoming the above-mentioned deficiency of prior art, the purpose of this utility model is to provide a kind of Automatic displacement meter, can automatically measure surface cracks, and measurement result is accurate.
the technical solution adopted in the utility model is: a kind of Automatic displacement meter, comprise housing and be positioned at the outer fixture of described housing, but be provided with the cylindricality rotation axis of axial rotation in described housing, be wound with wire rope on described rotation axis, one end of described wire rope extends to outside described housing and is fixedly connected with described fixture, a plurality of magnet have been circularly and evenly distributed on the outside surface of described rotation axis bottom surface, be provided with one in described housing and contact or approach the rear induction chip that produces pulse signal with described magnet, described induction chip is connected with the control circuit for the recording pulse signal number of times.
The girth that is used for the circumference that the outer rim girth of the part of lay winding wire ropes preferably surrounds into a plurality of described magnet on described rotation axis equates.
Described wire rope preferred single layer is wrapped on described rotation axis.
Can be provided with the screw thread for described wirerope-winding on described rotation axis, close-packed arrays between adjacent described screw thread.
Distance on circumference between adjacent described magnet is preferably 1mm.
The setting position of described induction chip can be corresponding with the position of any point on circumference that a plurality of described magnet surround into.
On described induction chip and circumference with its corresponding point between distance preferably be not more than the distance of reaction of described induction chip.
Described rotation axis can be horizontally placed in described housing.
Can be provided with power input terminal on described housing.
Described housing can be Cylinder Shell.
The beneficial effects of the utility model are: the utility model in use, housing and fixture are fixedly installed on the two ends in tested zone, and keep wire rope stretching, when the crack appears in the earth's surface in tested zone, housing and fixture do mutually away from relative motion, wire rope pulls rotation axis to rotate, induction chip in succession contact with magnet or is approaching, produce pulse signal, can calculate the width of surface cracks by the record of control circuit pulse signals.The utility model is simple in structure, measurement is convenient, and measurement result is not subjected to the impact of environment, temperature and technological means in terms of existing technologies.
The girth of the circumference that surrounds into due to the outer rim girth of the part that is used for lay winding wire ropes on rotation axis and a plurality of magnet is identical, make the width of surface cracks, displacement that wire rope pulls and magnet around the rotation displacement of circumference identical, measure the width of surface cracks by the rotation displacement of measuring circumference, effectively improve measuring accuracy, reduced error.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Embodiment
as shown in Figure 1, the utility model provides a kind of Automatic displacement meter, comprise housing 2 and be positioned at the outer fixture 7 of described housing, but be provided with the cylindricality rotation axis 3 of axial rotation in described housing, be wound with wire rope 1 on described rotation axis, one end of described wire rope extends to outside described housing and is fixedly connected with described fixture, during use, keep the wire rope between described housing and described fixture stretching, a plurality of magnet 6 have been circularly and evenly distributed on the outside surface of the bottom surface of described rotation axis, this circumference can be the arbitrary circumference centered by the axis of described rotation axis, be provided with an induction chip 5 that can produce pulse signal after contacting with described magnet or approaching in described housing, described induction chip is connected with the control circuit 4 for the recording pulse signal number of times.
Preferably, the girth that is used for the circumference that outer rim girth and a plurality of described magnet of the part of lay winding wire ropes surround on described rotation axis equates, so that in the situation that the wire rope between fixture and described housing is stretching, the displacement that wire rope pulls is identical with the rotation displacement of the circumference that described magnet surrounds into.Be the error between the rotation displacement that reduces displacement that wire rope pulls and circumference, described wire rope preferred single layer is wrapped on described rotation axis, can be provided with the screw thread for described wirerope-winding on described rotation axis, close-packed arrays between adjacent described screw thread, loose or horizontally slip to prevent from being wrapped in wire rope on described rotation axis, and then increase measuring error.
Preferably, distance on circumference between adjacent described magnet is 1mm, make magnet around the every rotation of circumference 1mm, described induction chip produces a pulse signal, be that described wire rope often pulls 1mm, described induction chip produces a pulse signal, makes measuring error be no more than 1mm, thereby improves measuring accuracy.
The setting position of described induction chip can be corresponding with the position of any point on circumference that a plurality of described magnet surround into, to guarantee in the scope that error allows, when described rotation axis rotates, can in succession contact with a plurality of described magnet or approach and produce pulse signal, for making described induction chip can sense smoothly described magnet, on described induction chip and circumference with its corresponding point between distance be not more than the distance of reaction of described induction chip.
Described rotation axis can be horizontally set in described housing, described housing can be Cylinder Shell, described housing is provided with power input terminal 8, the described control circuit of described power input sub-connection, be used to the power supply of described control circuit and induction chip, described power input terminal can adopt aviation socket, and loosening the quitting work that connects due to power supply when preventing from measuring affects measurement result.
Described rotation axis preferably adopts nonmagnetic substance, at the described induction chip described magnet of induction and in producing simultaneously the course of work of pulse signal, described induction chip is impacted preventing.
when the utility model uses, described housing and fixture are separately fixed at the two ends in tested zone, and the wire rope between keeping both is stretching, when surface cracks appears in tested zone, described housing and fixture do mutually away from relative motion, described wire rope pulls described rotation axis to rotate, described induction chip is responded to a plurality of magnet that are arranged on described rotation axis bottom surface in succession, produce pulse signal, record by described control circuit pulse signals and calculate the width that can draw tested regional surface cracks, because the distance between adjacent magnets on circumference is 1mm, therefore, described wire rope often pulls 1mm, described induction chip just can be sensed a magnet, produce a pulse signal, effectively guaranteed measuring accuracy.
The utility model is easy to use, and measuring accuracy is high, and measurement result is not subjected to the impact of environment and temperature, can be widely used in the surveying work of surface cracks width, is particularly useful for using under rugged surroundings.
Claims (10)
1. Automatic displacement meter, it is characterized in that comprising housing and be positioned at the outer fixture of described housing, but be provided with the cylindricality rotation axis of axial rotation in described housing, be wound with wire rope on described rotation axis, one end of described wire rope extends to outside described housing and is fixedly connected with described fixture, a plurality of magnet have been circularly and evenly distributed on the outside surface of described rotation axis bottom surface, be provided with one in described housing and contact or approach the rear induction chip that produces pulse signal with described magnet, described induction chip is connected with the control circuit for the recording pulse signal number of times.
2. Automatic displacement meter as claimed in claim 1, the girth that it is characterized in that being used on described rotation axis the circumference that outer rim girth and a plurality of described magnet of the part of lay winding wire ropes surround into equates.
3. Automatic displacement meter as claimed in claim 2, is characterized in that described wire rope winding of single layer is on described rotation axis.
4. Automatic displacement meter as claimed in claim 3, is characterized in that described rotation axis is provided with the screw thread for described wirerope-winding, close-packed arrays between adjacent described screw thread.
5. as claim 1,2,3 or 4 described Automatic displacement meters, it is characterized in that on circumference, the distance between adjacent described magnet is 1mm.
6. the position of any point on Automatic displacement meter as claimed in claim 5, the setting position that it is characterized in that described induction chip and the circumference that a plurality of described magnet surround into is corresponding.
7. Automatic displacement meter as claimed in claim 6, it is characterized in that on described induction chip and circumference with its corresponding point between distance be not more than the distance of reaction of described induction chip.
8. Automatic displacement meter as claimed in claim 7, is characterized in that described rotation axis is horizontally placed in described housing.
9. Automatic displacement meter as claimed in claim 8, is characterized in that described housing is provided with power input terminal.
10. Automatic displacement meter as claimed in claim 9, is characterized in that described housing is Cylinder Shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709405 CN203024723U (en) | 2012-12-20 | 2012-12-20 | Automatic displacement meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709405 CN203024723U (en) | 2012-12-20 | 2012-12-20 | Automatic displacement meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203024723U true CN203024723U (en) | 2013-06-26 |
Family
ID=48648702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220709405 Expired - Fee Related CN203024723U (en) | 2012-12-20 | 2012-12-20 | Automatic displacement meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203024723U (en) |
-
2012
- 2012-12-20 CN CN 201220709405 patent/CN203024723U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202372135U (en) | Magnet displacement sensor | |
| CN204007495U (en) | A kind of draw wire displacement sensor | |
| CN202119392U (en) | Photoelectric micrometer device | |
| CN102519349A (en) | Magnet displacement sensor | |
| CN202031580U (en) | Active magnetic field calibrator with MWD (measurement while drilling) directional probe | |
| CN104749395A (en) | Wind speed measuring probe, wind speed measuring system and wind speed measuring method | |
| CN104913764A (en) | Intelligent remote centralized control system for settlement meters and settlement measurement method of settlement meters | |
| CN204514269U (en) | A kind of simulation test bench for rocket projectile angle measurement unit | |
| CN108362399B (en) | Temperature measurement cable | |
| CN203024723U (en) | Automatic displacement meter | |
| CN201672904U (en) | Magnetostriction linear displacement sensor | |
| CN101592532A (en) | Cable for measuring temperature | |
| CN202208572U (en) | Device with double meter measuring programs | |
| CN104458084A (en) | Torque measuring device for leading wire of strong-line-force small-load stabilized platform | |
| CN203024724U (en) | Displacement detector | |
| CN209101990U (en) | It is a kind of for monitoring the device of shaft coupling concentricity | |
| CN101586989B (en) | Fiber grating temperature sensor for electrolytic bath shell | |
| CN203730531U (en) | Transmission shaft provided with device capable of performing on-line monitoring on torque in real time | |
| CN203590507U (en) | Electric heating rod | |
| CN203053614U (en) | Pressure detection apparatus | |
| CN102042896A (en) | Axial rotary type dynamic torque measurement calibrator | |
| CN203881409U (en) | Magnetostriction level gauge | |
| CN208984230U (en) | A kind of wind-powered electricity generation harness temperature sensor | |
| CN203259537U (en) | Shaft rotating speed measurement sensor | |
| CN202329689U (en) | Storage temperature and humidity measuring and sensing cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20131220 |