CN208936950U - A kind of calibrating device for vibrating string type strain transducer clamping device - Google Patents
A kind of calibrating device for vibrating string type strain transducer clamping device Download PDFInfo
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- CN208936950U CN208936950U CN201821998811.5U CN201821998811U CN208936950U CN 208936950 U CN208936950 U CN 208936950U CN 201821998811 U CN201821998811 U CN 201821998811U CN 208936950 U CN208936950 U CN 208936950U
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- fixed
- string type
- type strain
- strain transducer
- displacement sensor
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Abstract
The utility model discloses a kind of calibrating device for vibrating string type strain transducer clamping devices, including left fixture and right fixture, the left fixture includes left slider, it is equipped on left slider for perforating across the smooth perforation in a left side for guiding slide bar, equipped with the left-hand thread for being threadedly coupled power lead screw, left clamping head is fixed at the top of left slider；The right fixture includes right sliding block, be equipped on right sliding block for across the smooth perforation in the right side of guiding slide bar, equipped with for the smooth perforation in the right side across power lead screw, be fixed with right clamping head in right slider top；Vibrating string type strain transducer left and right ends slippage is detected simultaneously by left position displacement sensor and right displacement sensor, improves accuracy of measurement, while also can stress variation situation suffered by real-time detection.
Description
Technical field
The utility model belongs to measurement and calibration equipment technical field more particularly to a kind of vibrating string type strain transducer calibration cartridge
It sets and uses clamping device.
Background technique
Vibrating string type strain transducer is sensor relatively advanced in current stress-strain measurement, this sensor output
Frequency rather than voltage, will not because of conductor resistance variation, temperature fluctuation and cause the obvious decaying of signal, there is structure
Simply, precision height, strong antijamming capability, long distance of signal transmission, good long term stability, can be applied to low temperature, high temperature,
In the adverse circumstances such as height radiation, it is widely used in dam, bridge, heavy construction, subway, shipbuilding, mine, coal mine, foundation pit, water conservancy
In the safe early warning and safety detection in the fields such as water power, petrochemical industry, nuclear power station.
For vibrating string type strain transducer, country has formulated " GB/T 13606-2007 earthwork test Instrument geotechnical engineering
Instrument vibrating string type sensor general technical specifications " and " JJF 1305-2011 linear movement pick-up calibrating standard " propose vibration
The elementary error of string strain transducer and the technical requirements of the linearity and calibration method, but be not specified by using which kind of standard utensil
Guarantee that magnitude is accurate and reliable, is also not specified by unified calibration method and device.Some Domestic mechanism was also according to rule in recent years
Model has devised calibrating installation, such as Chinese patent CN101738157A, discloses a kind of vibrating string type strain transducer calibration cartridge
It sets, is mainly purely mechanical structure, is measured using dial gauge, be primarily present calibration large labor intensity, calibration efficiency
It is low and be difficult obtain repeatability error the problem of.Chinese patent CN107621222A discloses a kind of vibrating string type strain meter calibrating
Device is in a calibration process to measure to tiny length variable quantity, but ask since sensor retained part has sliding
Topic influences calibration result very big；When calibrating to wide range vibrating string type sensor, device can be deformed, and device is rigid
Degree can not meet alignment requirements.
It is relatively high to the clamping stability requirement of vibrating string type strain transducer during calibration, however do not have also at present
There is the special vibrating string type strain transducer clamping device used for calibrating device for vibrating string type strain transducer.
Utility model content
The utility model aim is to provide a kind of calibrating device for vibrating string type strain transducer clamping device；On reaching
Purpose is stated to be adopted the technical scheme that:
A kind of calibrating device for vibrating string type strain transducer clamping device, including left fixture and right fixture, the left fixture
Including left slider, be equipped on left slider for across the smooth perforation in a left side for guiding slide bar, equipped with for being threadedly coupled power silk
The left-hand thread of thick stick is perforated, and left clamping head is fixed at the top of left slider；The right fixture includes right sliding block, is equipped on right sliding block
The smooth perforation in the right side for passing through guiding slide bar, equipped with for the smooth perforation in the right side across power lead screw, it is solid in right slider top
Surely there is right clamping head.
Preferably, it is equipped with left positioning groove in left clamping head bottom, left installation is equipped with by left positioning groove and is perforated, on a left side
Sliding block is equipped with left positioning protrusion corresponding with left positioning groove, is equipped with by left positioning protrusion corresponding with left installation perforation
Left fixing screwed hole；It is equipped with right positioning groove in right clamping head bottom, right installation is equipped with by right positioning groove and is perforated, on the right side
Sliding block is equipped with right positioning protrusion corresponding with right positioning groove, is equipped with by right positioning protrusion corresponding with right installation perforation
Right fixing screwed hole.
Preferably, left position displacement sensor is fixed on left slider, the left position displacement sensor is located at a left side for left clamping head
Side；Right displacement sensor is fixed on right sliding block, the right displacement sensor is located at the right side of right clamping head；The left dislocation
Sensor and right displacement sensor are matched and are detected with the amount of horizontally slipping to vibrating string type strain transducer.
Preferably, it is fixed with fixed station on left slider, slidably connects slide unit in left-right direction on fixed station, in cunning
Platform is equipped with the fastening bolt for fixing slide unit, and the left clamping for fixing left position displacement sensor is fixed at the top of slide unit
Seat；The right grip slipper for fixing right displacement sensor is fixed on right sliding block.
Preferably, on fixed station be equipped with main scale graduation mark, on slide unit be equipped with vernier scale graduation mark, the fixed station with
Slide unit constitutes vernier caliper structure.
Preferably, the mounting hole in matrix distribution is equipped at the top of slide unit, left grip slipper is fixed by different mounting holes
At the top of the slide unit at different positions.
Have the beneficial effect that (1) is right simultaneously by left position displacement sensor and right displacement sensor possessed by the utility model
Vibrating string type strain transducer left and right ends slippage is detected, and accuracy of measurement is improved, while also can be suffered by real-time detection
Force value situation of change；(2) left position displacement sensor realizes the function of coarse regulation and micro-adjustment by the mating reaction of fixed station, slide unit
Energy；(3) left position displacement sensor, right displacement sensor, grating rule displacement sensor measurement displacement in the same direction to
Abbe error caused by reducing because of deformation；(4) the utility model is realized to vibrating string type strain transducer, type vibration wire position
The Full-automatic calibration for moving meter and vibrating string joint meter, meets national standard " GB/T 18459-2001 sensor dominant static performance
The calculation method of index ", " the general skill of GB/T 13606-2007 earthwork test Instrument geotechnical engineering instruments vibrating string type sensor
Art condition " and " JJF 1305-2011 linear movement pick-up calibrating standard ".
Detailed description of the invention
Fig. 1 is the assembly schematic perspective view of the utility model；
Fig. 2 is the stereo amplification figure of left fixture in Fig. 1；
Fig. 3 is the stereo amplification figure of right fixture in Fig. 1.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
As shown in Figure 1 to Figure 3, the utility model is assemblied on special calibrating device for vibrating string type strain transducer first
It uses, wherein calibrating device for vibrating string type strain transducer includes pedestal 8, in the left end of pedestal 8 is fixed with left fixing seat 9,
The right end of pedestal 8 is fixed with right fixing seat 6, and guiding slide bar 4, rotation connection are fixed between left fixing seat 9 and right fixing seat 6
Dynamic lead screw 3, the clamping device of the utility model are assemblied between left fixing seat 9 and right fixing seat 6, and specifically, this is practical
Novel clamping device includes left fixture 1 and right fixture 5, and the left fixture 1 includes left slider 104, and the left slider 104 is arranged
In the left side of guiding slide bar 4 and power lead screw 3, and left slider 104 is slidably connected with guiding slide bar 4 and 3 screw thread of power lead screw
Transmission connection, is fixed with left clamping head 103 on left slider 104；The right fixture 5 includes right sliding block 505, the right sliding block
505 are set in the right side of guiding slide bar 4 and power lead screw 3, and right sliding block 505 is slided with guiding slide bar 4, power lead screw 3
Connection, the both ends of S type pull pressure sensor 504 are separately fixed in right sliding block 505 and right fixing seat 6, solid on right sliding block 502
Surely there is right clamping head 501, the left clamping head 103 and right clamping head 501 are matched to consolidate to vibrating string type strain transducer
It is fixed.
According to the vibrating string type strain transducer of different size model, clamping head, every set clamping head can be covered with respective production more
Include left clamping head 103 and right clamping head 501, is equipped in the holding holes of left clamping head 103 and right clamping head 501 anti-skidding
Line for the ease of quick-replaceable, is accurately positioned, and is equipped with left positioning groove in left 103 bottom of clamping head, sets by left positioning groove
There is left installation to perforate, left positioning protrusion corresponding with left positioning groove is equipped on left slider 104, is set by left positioning protrusion
There is left fixing screwed hole corresponding with left installation perforation；It is equipped with right positioning groove in right 501 bottom of clamping head, it is recessed in right positioning
It is equipped with right installation by slot to perforate, right positioning protrusion corresponding with right positioning groove is equipped on right sliding block 505, in right convex
It rises other equipped with right fixing screwed hole corresponding with right installation perforation.
As shown in Figures 2 and 3, it is fixed with fixed station 108 on left slider 104, is slided in left-right direction on fixed station 108
It is dynamic to be connected with slide unit 109, the fastening bolt (being overleaf not shown in the figure) for fixing slide unit 109 is equipped on slide unit 109,
The left grip slipper 102 for fixing left position displacement sensor 101 is fixed at the top of slide unit 109, left position displacement sensor 101 is located at left folder
Hold first 103 left side；The right grip slipper 502 for fixing right displacement sensor 503, right displacement are fixed on right sliding block 505
Sensor 503 is located at the right side of right clamping head 501, and the left position displacement sensor 101 and right displacement sensor 503 are matched with right
The amount of horizontally slipping of vibrating string type strain transducer is detected.
Meanwhile main scale graduation mark 106 is equipped on fixed station 108, vernier scale graduation mark 105, institute are equipped on slide unit 109
It states fixed station 108 and slide unit 109 constitutes vernier caliper structure.The mounting hole 1010 in matrix distribution is equipped at the top of slide unit 109,
Left grip slipper 102 is fixed at the different position in 109 top of slide unit by different mounting holes 1010, to be directed to different size
The vibrating string type strain transducer of model, left position displacement sensor 101 can carry out the coarse regulation and high-precision micro-adjustment of big distance.
On the other hand, the left grip slipper 102 is equipped with multiple for fixing the left holding holes of left position displacement sensor 101,
The right grip slipper 502 is equipped with multiple for fixing the right holding holes of right displacement sensor 503.
In order to guarantee the stationarity in motion process, vacantly setting is slided in guiding for the left slider 104 and right left slider 505
On bar 4 and power lead screw 3, the guiding slide bar 4 is three, and two of them are located at the two sides of power lead screw 3, and third is led
It is located at the lower section of guiding slide bar 4 to slide bar 4.
When the utility model is used, first according to the specifications and models of vibrating string type strain transducer to be calibrated, selection is suitable
Left clamping head 103 and right clamping head 501, and be separately fixed on left slider 104 and right sliding block 505, then by vibratory string
The both ends of formula strain transducer are separately fixed on left clamping head 103 and right clamping head 501；Adjust right displacement sensor 503 with
The right side displacement of vibrating string type strain transducer is detected, reading is zeroed；By adjusting left grip slipper 102 in slide unit
The micro-shifting of installation site and slide unit 109 on 109 is moved to adjust left position displacement sensor 101 with the left side to vibrating string type strain transducer
End face displacement is detected, and reading is zeroed；Then starting servo motor 12 is dynamic with 3 slow-speed of power lead screw, to drive
Left slider 104 moves right, and in the process of moving, grating rule displacement sensor contraposition shifting amount is detected, and S type pressure passes
Sensor 504 is detected to by strength, according to above-mentioned displacement data, in conjunction with the correlative measurement of vibrating string type strain transducer itself
Amount data can evaluate required calibration parameter.
Outrange in order to avoid left slider 104 moves right in measurement process and instrument is caused to damage, on pedestal 8
Equipped with limit switch 2, the limit switch 2 in one of limit switch 2 such as left side can also be fixed on pedestal 8, it will be another
One limit switch 2 is detachable to be fixed on pedestal 8, thus can be according to the range of vibrating string type strain transducer to be calibrated
Adaptively adjust the position of another limit switch 2.Further, another limit switch 2 can be by way of magnet base
It is fixed on pedestal 8 by magnetic attracting force.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, but these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (6)
1. a kind of calibrating device for vibrating string type strain transducer clamping device, which is characterized in that including left fixture and right fixture, institute
Stating left fixture includes left slider, on left slider be equipped with for across guiding slide bar a left side it is smooth perforation, be equipped with for screw thread connect
The left-hand thread perforation for connecing power lead screw, is fixed with left clamping head at the top of left slider；The right fixture includes right sliding block, in right cunning
Block be equipped with for across the smooth perforation in the right side of guiding slide bar, equipped with for the smooth perforation in the right side across power lead screw, in right cunning
Right clamping head is fixed at the top of block.
2. calibrating device for vibrating string type strain transducer clamping device according to claim 1, which is characterized in that in left folder
A bottom is held equipped with left positioning groove, left installation is equipped with by left positioning groove and perforates, is equipped on left slider recessed with left positioning
The corresponding left positioning protrusion of slot is equipped with left fixing screwed hole corresponding with left installation perforation by left positioning protrusion；On the right side
Clamping head bottom is equipped with right positioning groove, and right installation is equipped with by right positioning groove and is perforated, is equipped with and right positioning on right sliding block
The corresponding right positioning protrusion of groove is equipped with right fixing screwed hole corresponding with right installation perforation by right positioning protrusion.
3. calibrating device for vibrating string type strain transducer clamping device according to claim 2, which is characterized in that in left cunning
Left position displacement sensor is fixed on block, the left position displacement sensor is located at the left side of left clamping head；The right side is fixed on right sliding block
Displacement sensor, the right displacement sensor are located at the right side of right clamping head；The left position displacement sensor and right displacement sensor
It matches and is detected with the amount of horizontally slipping to vibrating string type strain transducer.
4. calibrating device for vibrating string type strain transducer clamping device according to claim 3, which is characterized in that in left cunning
It is fixed with fixed station on block, slidably connects slide unit in left-right direction on fixed station, is equipped on slide unit for fixing slide unit
Fastening bolt, the left grip slipper for fixing left position displacement sensor is fixed at the top of slide unit；It is fixed on right sliding block useful
In the right grip slipper of the right displacement sensor of fixation.
5. calibrating device for vibrating string type strain transducer clamping device according to claim 4, which is characterized in that in fixation
Platform is equipped with main scale graduation mark, and vernier scale graduation mark is equipped on slide unit, and the fixed station and slide unit constitute vernier caliper structure.
6. calibrating device for vibrating string type strain transducer clamping device according to claim 4 or 5, which is characterized in that
The mounting hole in matrix distribution is equipped at the top of slide unit, left grip slipper is fixed on position different at the top of slide unit by different mounting holes
Set place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821998811.5U CN208936950U (en) | 2018-11-30 | 2018-11-30 | A kind of calibrating device for vibrating string type strain transducer clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821998811.5U CN208936950U (en) | 2018-11-30 | 2018-11-30 | A kind of calibrating device for vibrating string type strain transducer clamping device |
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| Publication Number | Publication Date |
|---|---|
| CN208936950U true CN208936950U (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821998811.5U Expired - Fee Related CN208936950U (en) | 2018-11-30 | 2018-11-30 | A kind of calibrating device for vibrating string type strain transducer clamping device |
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| Country | Link |
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| CN (1) | CN208936950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357606A (en) * | 2018-11-30 | 2019-02-19 | 河南省计量科学研究院 | A kind of calibrating device for vibrating string type strain transducer clamping device |
-
2018
- 2018-11-30 CN CN201821998811.5U patent/CN208936950U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357606A (en) * | 2018-11-30 | 2019-02-19 | 河南省计量科学研究院 | A kind of calibrating device for vibrating string type strain transducer clamping device |
| CN109357606B (en) * | 2018-11-30 | 2024-07-12 | 河南省计量测试科学研究院 | Clamping mechanism for vibrating wire type strain sensor calibration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190604 Termination date: 20201130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |