CN203310367U - Variable-resistance type measuring probe - Google Patents
Variable-resistance type measuring probe Download PDFInfo
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- CN203310367U CN203310367U CN2013203469746U CN201320346974U CN203310367U CN 203310367 U CN203310367 U CN 203310367U CN 2013203469746 U CN2013203469746 U CN 2013203469746U CN 201320346974 U CN201320346974 U CN 201320346974U CN 203310367 U CN203310367 U CN 203310367U
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- probe
- steel ball
- probe shaft
- insulating
- insulating bushing
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Abstract
The utility model relates to a variable-resistance type measuring probe used for rock mass structural surface three-dimensional shape measurement. The variable-resistance type measuring probe is provided with an insulating shell which is composed of an insulating bushing and a built-in insulating bushing; a conductive steel ball ring is transversely arranged in the insulating bushing, and the lower end of the insulating bushing is provided with a partition plate; the upper end of the built-in insulating bushing is clamped into the lower end of the insulating bushing; the insulating shell is provided with a probe shaft slide way along an axial direction; a probe shaft is arranged in the probe shaft slide way; and the tip of the probe shaft protrudes out from the built-in insulating bushing; an insulating bar which is arranged at an upper portion of the probe shaft and share the same coaxial line with the probe shaft is arranged inside the insulating bushing; a resistance wire coil is wound on the insulating bar and penetrates an inner hole of the conductive steel ball ring to contact with conductive steel balls; an upper portion of the conductive steel ball ring is provided with an output wire; a top portion of the resistance wire coil is provided with an input wire; and a lower portion of the insulating bushing is provided with a clamping tooth matched with a probe clamping seat on a probe base. The variable-resistance type measuring probe of the utility model has the advantages of simple structure, convenient operation, high work efficiency, high precision and long service life, and can be matched with other measuring equipment so as to jointly perform diverse measurement operation.
Description
Technical field:
The utility model relates to a kind of rock mass discontinuity 3 d surface topography and measures the rheostat measuring probe.
Background technology:
The impact of structural plane is to make the rock mass mechanics different in kind in the basic reason of rockmass.It is research rock mass deformation and strength characteristic that the real topography of structural plane is carried out accurately measuring, the prerequisite of evaluation structure face rock stability.The structural plane degree of roughness is one of key mechanics parameter of solid structure face, yet the structural plane surface is that coarse fluctuating is rough, and its coarse fluctuating quantity is ever-changing, and it is a difficult problem that its real topography is carried out to accurate measurement always.Measurement mostly is its roughness section curve of measurement to structural plane in reality, its three-dimensional appearance is considered not enough, yet itself complexity of rock mass discontinuity is difficult to simply mean with several groups of profile lines, must take into full account its three-dimensional appearance, and its three-dimensional appearance is accurately measured.The key of obtaining the three-dimensional appearance of structural plane is the three-dimensional coordinate parameter of Obtaining Accurate structural plane, the conventional machinery contact method is measured the structural plane three-dimensional parameter at present, be mainly to adopt dial gauge to carry out point-to-point measurement at rock surface, obtain the fluctuating elevation coordinate of structural plane; The major defect that adopts dial gauge to measure shows: (1) can only carry out spot measurement, and measuring speed is slow, and inefficiency, labour intensity are high.(2) mechanical dial gauge reading inconvenience, need to obtain data by reading pointer indication numeral in dial plate, it is a kind of non-digitalization survey instrument, can not demonstrate intuitively the size of survey data value, electronic centigrade scale can realize the digitizing reading but general range is less and can not use external power source.(3) dial gauge work is comparatively independent, generally can not form system and carry out simultaneously multimetering or be connected with other electronic equipment coordinating common implementing to measure.Therefore how to improve contact method structural plane parameter measurement equipment, improve measurement efficiency and the measurement progress of structural plane pattern, digitizing, the electronization that realizes simultaneously data acquisition is the place that is worth research and innovation.
The utility model content:
The purpose of this utility model is the deficiency existed in order to overcome at present existing rock mass discontinuity surface figure measuring device, provide a kind of simple in structure, easy to operate, high efficiency, accuracy of detection is high, long service life, can also coordinate other measuring equipment to carry out diversified surveying work simultaneously, meets the rheostat measuring probe of the needs of engineering construction and scientific research.
The purpose of this utility model is achieved like this:
But in the utility model rheostat measuring probe by the insulation shell by built-in insulation sleeve pipe that conduction steel ball ring and lower end insulating sleeve and the upper end by dividing plate snap in the insulating sleeve lower end laterally is housed forms, insulation shell has the probe shaft slideway vertically, probe shaft is arranged in the probe shaft slideway and needle point stretches out outside the built-in insulation sleeve pipe, in the built-in insulation sleeve pipe, spring cavity is arranged, be positioned at the first spring housing of spring cavity on probe shaft, in insulating sleeve, have be contained in probe shaft top and with the insulation rod of probe shaft coaxial cable, on insulation rod, be wound with resistance wire coil and pass conduction steel ball ring endoporus and contact with the conduction steel ball, on conduction steel ball ring top, output lead is arranged, input lead is arranged at the resistance wire coil top, thereby electric current forms closed-loop path from the input of resistance wire coil top from the output of conduction steel ball ring.
Between above-mentioned insulation rod upper end and insulating sleeve top, the second spring is housed, facilitates return.
Measure the structural plane (0-60 °) of low-angle dip in the wild, on the low-dip structure face, lay the measurement fixed mount, rotational angle is the structural plane inclination angle, and the utility model is contained in and measures on fixed mount, makes the utility model probe all the time perpendicular to structural plane.On the structural plane surface, select an appropriate point as initial point, start to measure from this point.Drive the whole Compress Spring downwards of probe, and be fixed on a highly constant position, now, probe tip touches rock surface, and is pressed into inserting tube inside, change the length of probe interior resistance wire, cause curent change, electric current, through the numerical value conversion, finally symbolizes the indentation length of probe shaft, because the height of probe is fixed, the length of probe shaft indentation has just meaned the relative relief of this point of rock surface.For reducing workload, improving and measure efficiency, three identical probes are placed in to the measurement fixed mount side by side, so just can three points of one-shot measurement.Because there are interval such as 25mm in the tip of three probes, so measurement data will be recorded on record sheet according to certain rules.
After a measuring point completes, probe is moved on to another place, displacement is determined by required, and displacement is less, and measured result is also just more accurate, and displacement is larger, and degree of accuracy but descends.This instrument Minimum sliding distance is 1mm, according to experience that practice obtains, recommends displacement 5,10,15,20mm,
The utility model is simple in structure easy to operate, cost economic, practical, high efficiency, can improve and adopt point efficiency, high efficiency, long service life, can also coordinate other measuring equipment to carry out diversified surveying work simultaneously, can realize digitizing and the electronization of equipment, be suitable for field and use and also to be suitable for Indoor measurement research, meet engineering and build and change and the needs of scientific research.
The accompanying drawing explanation:
Fig. 1 is the utility model structural representation.
Fig. 2 is conduction steel ball ring and the resistance coil location drawing.
Fig. 3 is conduction steel ball ring structure schematic diagram.
Fig. 4 is rheostat measuring probe fundamental diagram.
Embodiment:
Referring to Fig. 1～Fig. 4, the present embodiment is originally executed in routine rheostat measuring probe by the insulation shell 5 by built-in insulation sleeve pipe 4 that conduction steel ball ring 1 and lower end insulating sleeve 3 and the upper end by dividing plate 2 snap in the insulating sleeve lower end laterally is housed forms.Insulation shell has probe shaft slideway 6 vertically.Probe shaft 7 is arranged in the probe shaft slideway and needle point stretches out outside the built-in insulation sleeve pipe.Spring cavity 8 is arranged in the built-in insulation sleeve pipe.The first spring 9 that is positioned at spring cavity is enclosed within on probe shaft.In insulating sleeve, have be contained in probe shaft top and with the insulation rod 10 of probe shaft coaxial cable.On insulation rod, be wound with resistance wire coil 11 and be through on conduction steel ball ring endoporus and contact with conduction steel ball 12.On conduction steel ball ring top, output lead 13 is arranged, input lead 14 is arranged at the resistance wire coil top, thereby electric current forms closed-loop path from the input of resistance wire coil top from the output of conduction steel ball ring.The second spring 15 is housed between insulation rod upper end and insulating sleeve top.
Referring to Fig. 1～Fig. 3, in the conduction steel ball ring, steel ball is embedded in conducting ring and contacts with the conductive resistance silk is accurate, electrical current forms closed-loop path with the conduction steel ball after resistance wire, the steel ball that now conducts electricity is similar to electrified wire, therefore it is isolated that the steel ball ring of conducting electricity is conducted electricity resistance wire and the bottom resistance wire of not switching on by top, and electric current is by conduction steel ball and external wire outflow.The conduction steel ball ring is whole by card 16 in a ring-type, is fixed in the inboard of probe case.Thereby the steel ball ring that makes to conduct electricity is rolled and is contacted with the resistance wire generation with probe case is whole.In Fig. 2, Fig. 3, sequence number 17 is conductive metal sheet.
Referring to Fig. 4, rheostat measuring probe principle of work is by probe and rock mass discontinuity 18 Surface Contacts, the structural plane fluctuating drives probe shaft and moves up and down, make to be wound around on the axle insulation rod length generation conversion of resistance wire, thereby resistance value is changed, resistance value R changes according to formula under rated voltage: I=U/R drives current value I thereupon and changes, and the variation of electric current is exported by screen.In measurement, the rheostat probe produces from the structure millet cake contact of different wavinesses the poor Δ H that rises and falls, the Δ L thereby the length of drive resistance wire changes, thus by sensitive galvanometer, obtain corresponding curent change value Δ Ι.In Fig. 4, sequence number 11-1,11-2 is respectively last conducting parts sub-resistance silk and conducting parts sub-resistance silk.Sequence number 19 is reference field.
The effective operating resistance wire coil length of this rheostat measuring probe design is 50mm, and operating voltage can be regulated by voltage regulator.The maximum effective resistance value 214.798 of probe; Minimum effective resistance 75.319 Ω; Measure structure structure face waviness scope (0-50mm), device adopts DC current, can by existing friendship the direct current changeover plug carry out current conversion; Operating voltage range (precision of instrument is for 1.5V-30v), electric current maximum changing value (55.864-159.324) mA ± (1%+2), and horizontal unit traverse measurement interval 1mm.
[displacement Hi computation process is reference point for selecting initial point, if the surveying instrument initial reading is I1, after Moving Unit distance (Io=1mm), instrument readings is I2, and the electric current difference of twice reading is Δ I=I2-I1, and displacement becomes Δ Hi=Δ I*K (K is design factor) .]
The following advantage of the utility model conduction steel ball ring tool:
(1) can contact comparatively closely with resistor, plastic yield and excessive fatigue deformation can not occur.
When (2) the electronic resistance wire rod of probe shaft moved up and down, steel ball can rotate with the motion of axle, can farthest reduce like this friction of itself and resistance wire, thereby the consumption that reduces resistance wire extends its serviceable life, can also reduce the systematic error caused because of the resistance wire loss simultaneously.
(3) simple in structure, material is easy to get, and has reduced difficulty of processing.
The utility model probe is by wire and data collector (PD194 model digital display current measurement table and digital three-dimensional Become the picture software (MATLAB/SURFER) and computing machine while cooperating, parameter acquiring and the three-dimensional visualization on implementation structure face surface.
Above-described embodiment is that foregoing of the present utility model is further described, but this should be interpreted as to the scope of the above-mentioned theme of the utility model only limits to above-described embodiment.All technology realized based on foregoing all belong to scope of the present utility model.
Claims (2)
1. rheostat measuring probe, it is characterized in that by the insulation shell by built-in insulation sleeve pipe that conduction steel ball ring and lower end insulating sleeve and the upper end by dividing plate snap in the insulating sleeve lower end laterally is housed forms, insulation shell has the probe shaft slideway vertically, probe shaft is arranged in the probe shaft slideway and needle point stretches out outside the built-in insulation sleeve pipe, in the built-in insulation sleeve pipe, spring cavity is arranged, be positioned at the first spring housing of spring cavity on probe shaft, in insulating sleeve, have be contained in probe shaft top and with the insulation rod of probe shaft coaxial cable, on insulation rod, be wound with resistance wire coil and pass conduction steel ball ring endoporus and contact with the conduction steel ball, on conduction steel ball ring top, output lead is arranged, input lead is arranged at the resistance wire coil top, thereby electric current forms closed-loop path from the input of resistance wire coil top from the output of conduction steel ball ring.
2. rheostat measuring probe as claimed in claim 1, is characterized in that, between insulation rod upper end and insulating sleeve top, the second spring is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203469746U CN203310367U (en) | 2013-06-18 | 2013-06-18 | Variable-resistance type measuring probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203469746U CN203310367U (en) | 2013-06-18 | 2013-06-18 | Variable-resistance type measuring probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203310367U true CN203310367U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203469746U Expired - Fee Related CN203310367U (en) | 2013-06-18 | 2013-06-18 | Variable-resistance type measuring probe |
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| CN (1) | CN203310367U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931006A (en) * | 2015-05-05 | 2015-09-23 | 中国矿业大学 | Device of dynamically monitoring surrounding rock deformation of filled tunnel |
| CN105333813A (en) * | 2015-11-09 | 2016-02-17 | 适新科技（苏州）有限公司 | Separator planar contour detection device |
| TWI582378B (en) * | 2016-05-18 | 2017-05-11 | 南臺科技大學 | Sensing touch probe of probe tip |
| CN107301911A (en) * | 2017-06-13 | 2017-10-27 | 青岛量子健康科学有限公司 | A kind of effort-saving regulating current device of electro-therapeutic apparatus |
| CN109916286A (en) * | 2018-08-21 | 2019-06-21 | 张宝霞 | A kind of galling measuring method and realization device |
| CN110749271A (en) * | 2019-10-11 | 2020-02-04 | 成都飞机工业（集团）有限责任公司 | Wireless shape and position measuring device |
-
2013
- 2013-06-18 CN CN2013203469746U patent/CN203310367U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931006A (en) * | 2015-05-05 | 2015-09-23 | 中国矿业大学 | Device of dynamically monitoring surrounding rock deformation of filled tunnel |
| CN105333813A (en) * | 2015-11-09 | 2016-02-17 | 适新科技（苏州）有限公司 | Separator planar contour detection device |
| CN105333813B (en) * | 2015-11-09 | 2017-12-29 | 适新科技（苏州）有限公司 | Separate sheet face profile detection means |
| TWI582378B (en) * | 2016-05-18 | 2017-05-11 | 南臺科技大學 | Sensing touch probe of probe tip |
| CN107301911A (en) * | 2017-06-13 | 2017-10-27 | 青岛量子健康科学有限公司 | A kind of effort-saving regulating current device of electro-therapeutic apparatus |
| CN107301911B (en) * | 2017-06-13 | 2023-02-10 | 青岛量子健康科学有限公司 | Labor-saving current adjusting device of electro-therapeutic apparatus |
| CN109916286A (en) * | 2018-08-21 | 2019-06-21 | 张宝霞 | A kind of galling measuring method and realization device |
| CN110749271A (en) * | 2019-10-11 | 2020-02-04 | 成都飞机工业（集团）有限责任公司 | Wireless shape and position measuring device |
| CN110749271B (en) * | 2019-10-11 | 2021-12-10 | 成都飞机工业（集团）有限责任公司 | Wireless shape and position measuring device |
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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: 20131127 Termination date: 20160618 |
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| CF01 | Termination of patent right due to non-payment of annual fee |